CN201883102U - Four-tin bell-less charging device - Google Patents
Four-tin bell-less charging device Download PDFInfo
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- CN201883102U CN201883102U CN2010202723731U CN201020272373U CN201883102U CN 201883102 U CN201883102 U CN 201883102U CN 2010202723731 U CN2010202723731 U CN 2010202723731U CN 201020272373 U CN201020272373 U CN 201020272373U CN 201883102 U CN201883102 U CN 201883102U
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- 208000026438 poor feeding Diseases 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The utility model provides a four-tin bell-less charging device, comprising a weighting bucket, a material flow adjustment valve box, a low sealing valve box, a middle funnel, wherein the number of the material flow adjustment valve box corresponds with the number of the weighting bucket, one material flow adjustment valve box is respectively mounted below each weighting bucket, the upper end of the material flow adjustment valve box is hermetically fixed and mounted on the lower end of the weighting bucket; the low sealing valve box is a whole body or a split body, four valve ports on the valve body at the upper end are correspondingly hermetically connected with the outlet of each material flow adjustment valve box and its lower end is hermetically connected with the inlet at the upper end of the middle funnel and a valve cover is arranged on each valve port, each valve cover is fixed and mounted on one rotation axle, the rotation axle is connected with a drive device, thus the valve cover rotates together with the axle to switch the valve port, when the valve cover seals the valve seat, each weighting bucket is respectively isolated with the inner gas in a blast furnace. The device has features of convenient maintenance, stable and reliable device, reduced laying-off segregation of the blast furnace and being suitable for charging and distributing the materials of various kinds.
Description
Technical Field
The utility model belongs to blast furnace ironmaking field, concretely relates to four jars of no bell charging installations for blast furnace.
Background
Bell-less charging equipment has been widely used in iron and steel works in china and all over the world.
Bell-less top equipment is usually composed of a distributing device, an intermediate hopper, a valve box, a weighing bucket, an upper sealing valve, a reversing feeder and a pressure-equalizing diffuser. The valve box generally comprises a lower sealing valve and a material flow regulating valve. The distributing device is provided with a distributing chute which can rotate around the center line of the blast furnace and can tilt so as to distribute the raw materials put down from the charging bucket in the throat of the blast furnace according to the requirement of an operator. A plurality of charging buckets are arranged in parallel above the distributing device. The lower port of the charging bucket is connected with a valve box, and an octagonal chute is arranged in the valve box and is matched with a valve plate of the material flow regulating valve to form a charging door. The material flow regulating valve is arranged inside the valve box and is arranged at the bottom of the octagonal chute. A material flow regulating valve and a lower sealing valve are respectively arranged corresponding to the lower opening of each charging bucket. Each material flow regulating valve is arranged on the lower opening of the charging bucket, and the opening size of the lower opening of the charging bucket is realized by regulating the rotation angle of a valve plate in the charging bucket through a driving mechanism. The lower sealing valve is arranged at the bottom of the lower part of each independent space and comprises a valve seat and a valve cover rotating along with a shaft on the valve seat, the valve cover can rotate in a certain angle to open or close the lower sealing valve, and when the valve cover of one lower sealing valve is tightly attached to the valve seat, namely the lower sealing valve is closed, the corresponding charging bucket and the blast furnace are separated. The bottom of the valve box is provided with a funnel, and the lower part of the funnel is connected with a distributing device. An upper sealing valve is arranged at the upper port of each charging bucket, and can realize the communication and the partition between the outside and the charging bucket. The reversing chute is arranged above the upper sealing valve and realizes reversing material guiding through a rotary or flap-type chute.
The bell-less charging device in the prior art has the following defects:
1. according to the existing valve box, the material flow regulating valve and the lower sealing valve corresponding to a plurality of charging buckets are arranged in the same box body, so that an octagonal chute arranged in the valve box is not easy to detach and replace, and a valve plate of the material flow regulating valve is opened towards the direction close to the center line of a blast furnace, so that the material flow of furnace materials is far away from the center line of the blast furnace, and the material flow has large segregation after falling into a distributing device.
2. Although the octagonal chute inside the material flow adjusting valve box is of an approximate funnel structure, the inner side wall of the octagonal chute close to the center line of the blast furnace is not in the vertical direction, but is inclined outwards greatly along the included angle of the vertical direction, and the octagonal chute is close to the center line of the blast furnace when being opened by an adjusting valve plate matched with the octagonal chute.
3. The existing charging bucket is not reasonable in shape, so that the lower port of the charging bucket is far away from the center line of the blast furnace, and the segregation is formed after the material flow enters the blast furnace.
4. Current material flow governing valve adopts the cantilever beam structure with lower seal valve, and at the valve plate pivoted in-process, valve plate poor stability leads to the wearing and tearing of sealing washer and bearing serious. In addition, the sealing of the regulating valve and the structure of the bearing supporting part are complex, so that the equipment is difficult to overhaul and replace.
5. At present, the blast furnace is developed to be large-scale, and the process of blast furnace smelting is continuously improved and developed. A new smelting process appears at present: the sintering ore is fed into the furnace in a grading way and the coke is fed into the furnace in a grading way. The classified charging has the advantages of fully utilizing raw material resources, improving the operation index of the blast furnace, reducing consumption and reducing cost. And each grade of granularity is more uniform after classification, and the segregation of the material distribution is reduced to a certain extent. The large-scale blast furnace adopts a grading charging process, adopts two-tank and three-tank bell-free charging equipment, has poor feeding capability and cannot meet the requirement.
The four-tank bell-less charging device is generally characterized in that four charging tanks are parallelly arranged on a distributing device and are used as storage bins for ore or coke, and the charging tanks are alternately charged and discharged, so that the blast furnace can be continuously charged.
The four-tank bell-less charging equipment solves the problems of poor feeding capability and high operation rate of two-tank bell-less equipment and three-tank bell-less equipment. Because the four charging buckets are uniformly arranged, the material distribution segregation of the charging materials after entering the furnace is reduced, and a certain charging material segregation compensation means is provided. Compared with two-tank or three-tank bell-less charging equipment, the four-tank bell-less charging equipment has two or one more weighing charging tanks, and the original large ore batch can be respectively arranged in two or three tanks, so that the problem of large and high material tanks is solved, the breakage of furnace burden during the discharging process is greatly reduced, the air permeability of a material layer in a blast furnace is improved, and the production of the blast furnace is facilitated. Moreover, the four charging buckets can be spare parts for each other, once a fault occurs in a single charging bucket, the charging buckets can be repaired on line under the general condition, and the probability of unplanned damping down and wind reduction can be greatly reduced.
The four-tank bell-less top charging equipment can also realize charging and distributing of various materials.
Four charging pots are placed on the top of the furnace, the arrangement of the four charging pots and the material flow regulating valve box are greatly different from those of two or three charging pots, how to reasonably arrange the four charging pots can be achieved, and the technical problem to be solved in the field is solved by overcoming the defects of the existing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve the not enough of prior art, provide one kind and be applicable to large-scale blast furnace, can reduce blast furnace unloading segregation, satisfy the four jars of many kinds of feeding and cloth and do not have bell charging apparatus.
The utility model further aims at providing a four-tank bell-less charging device which is convenient to maintain, stable and reliable in device and strong in device interchangeability;
the purpose of the utility model is realized like this:
a four-tank bell-less charging device comprises a weighing charging tank, a material flow regulating valve box, a lower sealing valve box and an intermediate funnel;
the four weighing material tanks are uniformly distributed in the circumferential direction relative to the center line of the blast furnace, and the center lines of the weighing material tanks are arranged in a way of deviating from the center line of the blast furnace;
the material flow regulating valve box is arranged below the weighing material tank, the upper port of the material flow regulating valve box is correspondingly connected with the outlet of the weighing material tank, the lower port of the material flow regulating valve box is correspondingly connected with the valve port at the upper end of the lower sealing valve box, and the lower port of the lower sealing valve box is hermetically connected with the upper port of the middle funnel;
the material flow regulating valve boxes correspond to the weighing material tanks in quantity, each material flow regulating valve box comprises an octagonal chute and a material flow regulating valve, a valve plate of each material flow regulating valve is arranged at the lower port of the octagonal chute and connected with a driving mechanism, and the valve plate enlarges the lower port of the octagonal chute when moving in the direction far away from the center line of the blast furnace; the octagonal chute is of a funnel shape, wherein the inner side chute wall close to one side of the center line of the blast furnace is a vertical side wall, and the outer side chute wall is matched with the opening and closing track of the valve plate, so that the opening and closing of the valve plate are not influenced, and the lower port is closed by matching with the valve plate;
the upper end of the lower sealing valve box is provided with four valve ports which are in sealing connection with the lower port of each material flow regulating valve box above; the lower sealing valve box is also provided with a lower port;
the upper port of the middle funnel is hermetically connected with the lower port of the lower sealing valve box; the lower port of the middle funnel is connected with a distributing device.
The lower port of the middle funnel is provided with a corrugated pipe compensator which is connected with a distributing device.
The upper port of the octagonal chute is connected with the corresponding outlet of the weighing material tank in a sealing way, and the lower port of the octagonal chute corresponds to the corresponding valve port of the lower sealing valve box.
The valve plate is connected with the driving mechanism so that the valve plate moves to adjust the opening degree of the lower port of the octagonal chute.
The lower sealing valve box can be integrated or split.
The split type lower sealing valve box comprises a plurality of lower sealing valve boxes, the number of the lower sealing valve boxes is matched with that of the material flow adjusting valve boxes above the lower sealing valve boxes, the lower sealing valve boxes correspond to the material flow adjusting valve boxes one by one, and one valve port is arranged above each lower sealing valve box.
Each valve port in the lower sealing valve box is provided with a lower sealing valve which comprises a valve cover, a rotating shaft and a driving device, wherein each valve cover is fixedly arranged on the rotating shaft, the rotating shaft is connected with the driving device, so that the valve cover can realize the opening and closing actions of the valve port through rotating along with the rotating shaft, and when the valve cover seals the valve port, the corresponding weighing material tank is isolated from the gas in the blast furnace.
The split lower sealing valve box comprises four sub lower sealing valve boxes, the number of the sub lower sealing valve boxes corresponds to that of the material flow adjusting valve boxes on the upper sealing valve boxes, the sub lower sealing valve boxes are in one-to-one correspondence, a valve port is arranged on each sub lower sealing valve box, and the valve cover is arranged at the valve port in each sub lower sealing valve box.
And each lower sealing valve box is provided with the rotating shaft connected with the valve cover, and the rotating shaft extending out of the lower sealing valve box body is connected with the driving device. The split type sealing valve box is not only favorable for on-site disassembly and assembly and maintenance, but also more importantly, the size of the connecting surface of the split type sealing valve box and the middle funnel is reduced by the structure, so that the furnace top charging equipment has better sealing performance and safety.
The utility model provides a no bell charging apparatus changes the inboard cell wall that is close to blast furnace center line of eight corner chute into vertical cell wall and this valve plate move inwards and open down the port and change into the port down of the outward movement, just can be so that the material flow that puts down from weighing the material jar is close to the blast furnace center line more, can reduce the unloading segregation effectively like this. In addition, with present integrative material stream regulating valve case and lower sealing valve case separate, and with the material stream regulating valve case of fit change into with weigh the split type structure of material jar one-to-one for every material stream regulating valve case can both shift out alone, from this, can conveniently flow the maintenance and the change of regulating valve case to this material.
A bellows expansion compensator is arranged between the material flow adjusting valve box and the lower sealing valve box to realize flexible connection between the material flow adjusting valve box and the lower sealing valve box.
On the basis of the scheme that the lower sealing valve box is of a split structure, another structure can be produced, and the scheme comprises the following steps: an independent valve box is correspondingly arranged below each weighing material tank; the valve box is provided with an upper valve cavity and a lower valve cavity which respectively form the material flow regulating valve box and a lower sealing valve box, the octagonal chute and the material flow regulating valve are installed in the upper valve cavity, the valve port is arranged between the upper valve cavity and the lower valve cavity, and a lower sealing valve is correspondingly installed in the lower valve cavity and comprises the valve cover, a rotating shaft connected with the valve cover and a driving device connected with the rotating shaft; the upper port of the valve box is hermetically connected with the lower port of the weighing material tank, and the lower port of the valve box is hermetically connected with the middle funnel through a bottom corrugated pipe compensator. Under this kind of structure, for avoiding pressure-equalizing in-process charging bucket to receive the blast furnace internal pressure to float, influence the electronic scale and weigh and install closing device on weighing the charging bucket, for example the spring, the one end and the blast furnace frame of this spring are connected, one end with weigh the charging bucket and connect, connect the charging bucket on the furnace roof frame through closing device. The valve box structure reduces the connecting points and leakage points of the furnace top charging equipment on one hand, and reduces the height of the blast furnace charging equipment on the other hand, thereby reducing the investment of the furnace top equipment.
And in the case of an integral or split lower sealing valve box directly or indirectly fixed on the furnace roof frame, a corrugated pipe compensator is arranged between the material flow adjusting valve box and the lower sealing valve box.
The integral lower sealing valve box is directly fixed on the frame, the split lower sealing valve box is characterized in that the middle funnel is fixed on the frame, and the lower sealing valve box and the middle funnel are fixedly connected through bolts, namely, the lower sealing valve is indirectly fixed on the frame.
The lower end of the lower sealing valve box is connected with the middle funnel in a structure that: the integral lower sealing valve box is directly connected with the upper flange surface of the middle funnel through the large flange at the bottom of the lower sealing valve box, and the split lower sealing valve box is provided with four independent outlets which are correspondingly connected with four inlets of the middle funnel one by one. The upper end of the middle funnel of the split lower sealing valve box is provided with four inlets which are respectively connected with four independent lower sealing valves.
When the valve box structure is adopted, a corrugated pipe compensator is arranged between the bottom of the valve box and the middle funnel.
A corrugated pipe compensator is arranged between the lower part of the middle funnel and the distributing device.
The valve plate of the material flow adjusting valve and the driving mechanism are connected in a structure that: the valve plate is arranged on the rocker arm, two ends of the rocker arm are connected with the transmission shaft, the transmission shafts on two sides respectively extend out and are supported on the wall of the material flow adjusting valve, a bearing device and a shaft sealing element are arranged between the transmission shafts and the wall of the material flow adjusting valve, so that the transmission shafts and the wall of the material flow adjusting valve are sealed, the extending parts of the transmission shafts are respectively connected with a driving mechanism, two sets of driving mechanisms synchronously drive the valve plate to rotate, and the valve plate rotates within a set angle range along with the rotating shaft.
Each valve opening in the lower sealing valve box is provided with a lower sealing valve which comprises a valve cover, a rotating shaft connected with the valve cover and a driving device connected with the rotating shaft, each valve cover on the lower sealing valve box is connected with the lower sealing valve box by adopting a through shaft type structure, both ends of the rotating shaft are provided with a shaft sealing ring and a bearing seat, namely, the valve cover on the lower sealing valve box is fixedly arranged on the rotating shaft, both ends of the rotating shaft penetrate out of the lower sealing valve box, the shaft sealing ring and the bearing seat are arranged between the wall of the valve box and the rotating shaft, the end part of the rotating shaft is connected with a driving mechanism, and the driving mechanism drives the rotating shaft to enable the valve cover to rotate to close and open.
The distances from each valve port of a lower sealing valve box of the four-tank bell-less charging equipment to the center line of the blast furnace are equal, and the center point of each valve port forms a regular quadrangle.
The four-tank bell-less charging equipment lower sealing valve box internally comprises four independent lower sealing valves, namely four independent lower sealing valve covers are arranged corresponding to the four valve ports, and the installation structure of each valve cover is as follows: the rotating shaft connected with the valve cover on the lower sealing valve box body is arranged on one side far away from the center line of the blast furnace, so that when each valve cover is opened, the valve cover rotates towards the direction far away from the center line of the blast furnace, and when the valve cover is fully opened, the valve cover stays at the outer side of the valve port, correspondingly far away from the center line of the blast furnace, of the lower sealing valve box.
The height of the sealing valve box of the four-tank bell-less charging equipment is larger than the diameter of the valve plate.
In the four-tank bell-less charging equipment, the rotating angle of the valve cover is more than 100 degrees; preferably between 100 ° and 110 °.
The intermediate funnel is directly or indirectly fixed on the furnace top frame.
And each material flow regulating valve box is provided with a roller for replacing the material flow regulating valve box, correspondingly, a guide rail for replacing the material flow regulating valve box is arranged at the corresponding position on the furnace top frame, and the roller is arranged on the guide rail.
Each weighing bucket is fixed on the furnace top frame through three electronic weighing devices on the outer side of the weighing bucket.
The lower section of the weighing charging bucket is a conical cylinder body with the outer side inclined and the inner side basically vertical, and the middle section is a straight section. The straight section of the weighing material tank can be circular. In order to increase the volume of the charging bucket and reduce the total height of the equipment, the assembly space among four weighing charging buckets is fully utilized, the straight section of each weighing charging bucket can also be in an egg shape, and the egg-shaped section is the section as follows: the profile of the furnace is arc-shaped, one end of the furnace is a big end in the long axis direction, the other end is a small end, and the small end faces the center line of the blast furnace.
The egg-shaped weighing material tank can fully utilize the effective space and increase the volume of the material tank, thereby effectively reducing the height of the weighing material tank.
The lower part of the middle funnel is provided with a centering device which is a conical cylinder, the axis of the cylinder is positioned on the central line of the blast furnace and positioned in the corrugated pipe compensator connected with the lower part of the middle funnel, the upper end of the cylinder is higher than the outlet of the middle funnel, and the lower end of the cylinder is connected with a central throat pipe of a distributing device.
This centering device has formed an annular gap in the exit of middle funnel because the upper port exceeds middle funnel export, at the unloading in-process, after filling up the material in the annular gap, can form a heap platform here, should pile the platform and make the material stream of back deviate from original orbit, flow near the blast furnace center line more, reduce the segregation.
The utility model provides a no bell charging apparatus, its key improvement point lie in changing the inboard cell wall of octagonal chute into vertically by the slope, but, this kind of change has drawn the current structure of valve plate promptly, does not have the space to provide the valve plate and inwards opens, then, the utility model discloses change the valve plate into the outward movement and open, its and the vertical structure cooperation of octagonal chute inner wall for material flow is close to the blast furnace center line, can reduce the production of segregation effectively. In addition, the valve box including the material flow regulating valve and the lower sealing valve is divided into two parts, namely the material flow regulating valve box and the lower sealing valve box, the material flow regulating valve box is separated corresponding to the weighing charging bucket, and the valve plate of the material flow regulating valve is far away from the center line direction of the blast furnace when opened.
Furthermore, the lower sealing valve boxes are made into split bodies, and the material flow adjusting valve boxes on the upper split bodies are in one-to-one up-and-down correspondence, so that the installation, the disassembly and the maintenance are more convenient; and the lower sealing valve box and the corresponding material flow adjusting valve box are made into an integral valve box, so that the sealing performance and the integrity on the material flow path are higher.
Furthermore, the valve plate of the material flow adjusting valve is driven through two sides, so that the valve plate is more stable in rotation, and abrasion of the oil seal and the bearing is reduced. And the sealing and supporting structure of the regulating valve box shaft is simple, the sealing performance and the replaceability are good, and the field maintenance operation is facilitated.
In addition, the lower sealing valve adopts a through shaft type design, and the two ends of the shaft are provided with the bearing seats, so that the shaft drives the valve plate to rotate more stably, the bearing is stressed uniformly, and the service life of the bearing and the oil seal is greatly prolonged. When the lower sealing valve is opened, the valve plate rotates towards the position far away from the center line of the blast furnace and stays outside the lower sealing valve box, so that the charging equipment can open two lower sealing valves at the same time, and the valve covers cannot interfere with each other.
The invention is further illustrated by the following figures and examples.
Drawings
FIG. 1 is a schematic diagram of the general structure of a bell-less charging apparatus having four weighing buckets according to the present invention;
FIG. 2 is a schematic diagram of a flow path of material from a weighing bucket to a feed inlet of a blast furnace in the bell-less charging apparatus shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of FIG. 1;
FIG. 4 is a schematic structural diagram of a material flow regulating valve box in the bell-less charging device;
FIG. 5 is a schematic view of the connection structure of the valve plate connection driving device in the flow control valve box of FIG. 4;
FIG. 6 is a schematic top view of the integrated lower seal valve box;
fig. 7 is a schematic view of the installation and connection form of the valve box in the bell-less charging device.
Fig. 8 is a schematic structural view of the valve box body.
FIG. 9a is a schematic layout view of a weighing bucket with a circular straight section;
fig. 9b is a schematic layout view of the weighing bucket with the straight section in egg shape.
Detailed Description
As shown in fig. 1, 2 and 3, a four-tank bell-less charging device comprises a weighing material tank 100, a material flow regulating valve box 200, a lower sealing valve box 300, an intermediate funnel 400 and a distributing device 500;
the distributing device 500 is a rotary distributing device and is provided with a distributing chute, the distributing chute can rotate around the center line of the blast furnace and is arranged in the distributing device in a tilting manner, and the rotary distributing device distributes materials to the blast furnace through the distributing chute;
an outlet at the lower end of the middle funnel 400 is connected with the distributing device 500;
the weighing material tanks 100 comprise four weighing material tanks 101, 102, 103 and 104 which are uniformly distributed and installed in the circumferential direction relative to the blast furnace center line 0, and the center line 01 of the weighing material tanks 100 deviates from the blast furnace center line 0;
the number of the material flow regulating valve boxes 200 is four corresponding to the number of the weighing material tanks, and the four material flow regulating valve boxes are respectively material flow regulating valve boxes 201, 202, 203 and 204, one material flow regulating valve box is correspondingly arranged below each weighing material tank, the material flow regulating valve boxes are fixedly arranged on the lower end ports, namely outlets, of the weighing material tanks, and the upper end ports of the material flow regulating valve boxes are fixedly arranged on the lower end outlets of the weighing material tanks in a sealing manner; as shown in fig. 2, 3 and 4, each material flow regulating valve box is provided with an octagonal chute 210, an upper port of the octagonal chute 210 is connected with the outlet of the corresponding weighing material tank in a sealing manner, a lower port of the octagonal chute corresponds to the corresponding valve port of the lower sealing valve box, the material flow regulating valve further comprises a material flow regulating valve, a valve plate 220 is arranged at the lower port of the octagonal chute 210, the valve plate 220 is connected with a driving mechanism to enable the valve plate to move so as to regulate the opening degree of the lower port of the octagonal chute, and the connection structure of the valve plate and the driving mechanism enables the valve plate to open the lower port of the octagonal chute when the valve plate moves in a direction away from the center line of the blast furnace;
the middle funnel 400 has four inlets at its upper end. The lower sealing valve box 300 is a unitary piece; or a separate piece, namely, the lower sealing valve boxes 301, 302, 303, 304, if the piece is integral, the upper end of the lower sealing valve box is provided with four valve ports 310 which are correspondingly and hermetically connected with the outlets of the upper material flow regulating valve boxes, and the lower end outlet of the lower sealing valve box is connected with the upper port of the middle funnel through a flange. If the device is a split type device, the upper end of each split piece is provided with one valve port 310 which is in corresponding sealing connection with the outlet of each material flow regulating valve box above, and the four outlets at the lower end of each split piece are in one-to-one corresponding sealing connection with the four inlets 410 at the upper end of the middle funnel 400. The integral or split type lower sealing valve box is characterized in that each valve port in the lower sealing valve box is provided with a valve cover 320, each valve cover 320 is arranged on a rotating shaft, the rotating shaft is connected with a driving device, so that the valve covers 320 can realize opening and closing actions on the valve ports 310 through rotation along with the rotating shaft, and when the valve covers 320 seal the valve ports 310, the four weighing material tanks are respectively isolated from gas in the blast furnace.
As shown in FIG. 6, four valve ports 310 of the lower sealing valve box are equidistant from the center line 0 of the blast furnace, and the center points of the four valve ports form a regular quadrangle.
The four lower sealing valve ports 310 corresponding to the four weighing material tanks are provided with four independent lower sealing valve covers 320, and the four valve covers 320 are mounted in a structure that: the rotation shaft is disposed outside the valve port 310 and is connected to the valve cover 320. When each valve cover 320 is opened, the valve cover 320 rotates in a direction away from the center line 0 of the blast furnace, and when the valve cover 320 is fully opened, the valve cover 320 stays outside the valve port 310 of the lower sealing valve box, which is correspondingly away from the center line 0 of the blast furnace.
On the basis of the scheme that the lower sealing valve box is of a split structure, another structure can be produced, and as shown in fig. 7 and 8, an independent valve box 600 is correspondingly arranged below each weighing material tank; the valve box 600 is provided with an upper valve cavity 601 and a lower valve cavity 602 which form the material flow regulating valve box 200 and a lower sealing valve box 300, the octagonal chute 210 and the material flow regulating valve 220 are arranged in the upper valve cavity 601, and the material flow regulating valve comprises the valve plate and a driving device. The valve port 310 is arranged between the upper valve cavity and the lower valve cavity, and a lower sealing valve is correspondingly arranged in the lower valve cavity 602 and used for sealing the valve port 310, and comprises the valve cover 320, and a rotating shaft and a driving device which are connected with the valve cover 320; the upper port of the valve box 600 is hermetically connected with the lower port of the weighing material tank, and the lower port of the valve box is hermetically connected with the middle funnel 400 through a bottom corrugated pipe compensator A3. Under this kind of structure, for avoiding pressure-equalizing in-process charging bucket to receive the blast furnace internal pressure to float, influence the electronic scale and weigh and install closing device on weighing the charging bucket, for example the spring, the one end and the blast furnace frame of this spring are connected, one end with weigh the charging bucket and connect, connect the charging bucket on the furnace roof frame through closing device.
The height of the lower sealing valve box is larger than the diameter of the valve cover, and the rotating angle of the valve cover is larger than 100 degrees. Preferably, the valve cover rotates by an angle of 100-110 degrees.
The weighing material tanks are all fixed on the furnace top frame A1 through a weighing device A2. For example, three weighing devices are arranged on one weighing bucket.
Taking a four-tank bell-less charging device as an example, the material flow regulating valve box is composed of a material flow regulating valve and an octagonal chute. As shown in fig. 4 and 5, the octagonal chute 210 is funnel-shaped, wherein the inner side wall of the octagonal chute is a vertical side wall, and the outer side wall of the octagonal chute is matched with the opening and closing track of the valve plate, so that the opening and closing of the valve plate are not affected and the octagonal chute is matched with the valve plate to close the lower port; the octagonal chute is arranged at the upper part of the material flow regulating valve box and is hermetically connected with the outlet of the weighing material tank above the octagonal chute. The octagonal chute 210 is provided with a valve plate 220 at the bottom, the valve plate 220 is arranged in the middle of the valve box, and the valve plate rotates within a certain angle range. The size of the feed opening of the weighing material tank can be changed by adjusting the opening degree of the valve plate 220. An annular wear liner 230 is also mounted at the outlet of the octagonal chute 210.
Although the octagonal chute inside the regulating valve box adopted at present is similar to a funnel structure, the octagonal chute has a larger included angle with the vertical direction when being not positioned in the vertical direction near one side (inner side) chute wall of the blast furnace center line, and is close to the direction of the blast furnace center line when being opened by a regulating valve plate matched with the octagonal chute.
The utility model provides an octagonal chute of material flow governing valve adopts the funnel type design, and the feed opening is vertical downwards. Its inside wall that is close to blast furnace center line of funnel is in vertical direction, in addition has changed the opening direction of valve plate, guarantees that the material flows the vertical downwards of direction. The outer side groove wall of the octagonal chute is matched with the arc track of the opening and closing of the valve plate.
As shown in fig. 4 and 5, the valve plate 220 in the material flow regulating valve box is fixed on a rocker arm 221, two sides of the rocker arm 221 are respectively connected with two transmission shafts 223, the transmission shafts 223 penetrate through the box body of the material flow regulating valve box, and a bearing seat and a shaft sealing structure 222, which can be a sealing ring, are arranged between the box body and the transmission shafts. The transmission shafts 223 on both sides are connected to two drive mechanisms 224, respectively. The outward outer side wall of the box body of the material flow regulating valve box can be provided with a square observation hole, so that the abrasion condition of the inner annular lining plate 230 can be conveniently observed.
The material flow regulating valve in the existing blast furnace bell-less charging equipment generally adopts a unilateral driving mode, namely a valve clack type regulating valve, a valve plate is driven by a crankshaft, and the whole material flow regulating valve is equivalent to a cantilever beam structure, so that in the process of externally driving the valve plate to rotate, the stability of the valve plate is poor, and the abrasion of a sealing ring and a bearing is serious. In addition, since the structure of the seal and the bearing support portion of the regulating valve is complicated, the maintenance and replacement of the regulating valve housing are difficult.
The utility model provides a material flow governing valve adopts two side drives, and the both sides of valve plate all are connected with the transmission shaft promptly to drive the synchronous rotation of valve plate by the actuating mechanism of both sides, make the rotation in-process stability of valve plate on the lower port of octagonal chute very good like this, it is very little to the wearing and tearing influence of sealing washer and bearing. Meanwhile, the sealing and supporting structure of the regulating valve box is simple, the sealing performance and the replaceability are good, and the field maintenance operation is facilitated.
As shown in fig. 1, each material flow regulating valve box is provided with a roller B1 for replacement, and a corresponding replacement guide rail B2 is arranged on the furnace roof frame, and the roller B1 is placed on the guide rail B2. After the connecting bolts of the upper part and the material flow regulating valve box and the corrugated pipe compensator between the bottom part and the lower sealing box are removed, each regulating valve box can be conveniently moved out through the roller B1 and the track B2, and the field replacement and the maintenance are convenient.
The four-tank bell-less charging device is characterized in that the driving device connected with the rotating shaft on the four-tank bell-less charging device can be an external oil cylinder. When the external oil cylinder is driven, the valve cover can rotate around the shaft within a certain range to complete the opening and closing actions of the lower sealing valve.
The through shaft type design of the lower sealing valve is that the bearing seats are arranged at the two ends of the shaft, so that the shaft drives the valve plate to rotate more stably, the bearing is stressed uniformly, and the service lives of the bearing and the oil seal are greatly prolonged. The bearing seat is directly arranged on the shell, and the sealing and the supporting of the shaft are integrated, so that the structure of the equipment is simple and practical, and the assembly space of the equipment is reduced.
The existing electronic weighing devices are all arranged on the weighing support of the valve box, the gravity center offset distance of the weighing material tank in the charging process is large, and the weighing precision of the electronic scale is greatly influenced. Electronic weighing device after redesign evenly arranges in the junction of weighing the straight section of material jar and awl section down for the unloading in-process is weighed the eccentric distance of material jar focus and is reduced, consequently reduces the electronic scale influence, has guaranteed the accuracy of electronic scale, and then has also improved the life of electronic scale.
A centering device is arranged at the lower part of the middle funnel, and a centering device 550 is arranged at the outlet of the middle funnel 400 and is positioned on the center line 0 of the blast furnace. The centering device 550 is shown in fig. 2 and 4 as a conical cylinder, which is composed of wear-resistant lining plates. The upper end is higher than the outlet of the middle funnel 400, and the lower end is connected with the central throat of the distributing device 500.
Shown in fig. 2 is the flow path when the valve plate 220 on the flow regulating valve housing is opened to an angle. Due to the eccentricity of the lower conical section of the weighing charging bucket, the furnace burden b has a horizontal component speed pointing to the center in the vertical blanking process. Since the upper end of the centering device 550 is higher, a part of the raw material is stored at the bottom of the middle hopper during blanking. Just because this part of raw materials forms the material platform, make the material stream that falls deviate from the orbit after assaulting the material platform, directly fall on the distribution chute. It can be seen that the flow has no impact on the central throat in the distribution device 500.
According to the bell-less charging device, a telescopic bellows compensator A3 is arranged between the material flow regulating valve box and the lower sealing valve box or between the lower sealing valve box and the middle funnel, as shown in figures 1 and 3, so that flexible connection is realized. The bellows compensator has three functions: firstly, demolish material flow adjusting valve case bottom or valve case bottom connection corrugated pipe compensator's bolt, compression corrugated pipe compensator can be convenient for the maintenance of material flow adjusting valve case or valve case and change, secondly at the in-process of weighing the material jar and loading and weighing, can reduce the influence of lower seal valve case or middle funnel to weighing the precision, thirdly, it will flow adjusting valve case and lower seal valve case or with valve case and middle funnel sealing connection to the thermal deformation volume of compensation equipment in the vertical direction under the temperature variation. A bellow compensator a3 is also provided under the intermediate funnel, the main function of which is to compensate for the thermal deformation of the device in the vertical direction under temperature changes.
For the bell-less charging device with four weighing charging buckets, the upper port of the middle funnel 400 is connected with the lower sealing valve box 300, and the lower port is communicated with the distributing device 500. The intermediate hopper 400 has a plurality of inclined ramps, which are uniformly arranged about the center line of the blast furnace and correspond to the plurality of outlets of the lower sealing valves, respectively. The inclined slide way guides the materials coming from the upper part into a central outlet at the bottom, namely a lower port. A layer of wear-resistant lining plate is arranged on the slideway. The bottom of the middle funnel has a flange, which is connected to the distribution device 500 through a bellows compensator a 3.
The inner side box walls of the four material flow regulating valve boxes are preferably close to the center line of the blast furnace as far as possible, and the material flow regulating valve boxes are used as bell-less charging devices of the four weighing charging tanks as long as maintenance installation spaces are reserved among the material flow regulating valve boxes.
For the bell-less charging device with four weighing buckets, the lower sealing valve box comprises a plurality of lower sealing valves inside, the through shafts of the lower sealing valves are far away from the center of the valve box when the lower sealing valves are installed, and when the lower sealing valves are opened, the valve plates rotate towards the positions far away from the center line of the blast furnace and stay outside the lower sealing valve box. Therefore, the height of the sealing valve box must be larger than the diameter of the valve plate, and the valve plate must rotate by an angle larger than 100 degrees, preferably 100 to 110 degrees, so as not to hinder the blanking of the charging materials.
The centers of four valve ports on the upper part of the lower sealing valve box form a regular quadrangle, each valve port is a circular section taking R as a radius, and the distance from the center of each valve port to the center line of the blast furnace is 1-2 times of the distance from the center of each valve port to the R of the circular section.
And the four chutes of the middle funnel correspond to the four inspection manholes of the lower sealing valve box above the middle funnel one by one. The replacement of the wear-resistant lining plate on the chute can be carried out through an access manhole.
The lower section of the weighing charging bucket is a conical cylinder body with the outer side inclined and the inner side basically vertical, and the middle section is a straight section. The straight section of the weighing bucket can be circular in section (as shown in figure 9 a). In order to increase the volume of the charging bucket and reduce the total height of the equipment, the assembly space among four weighing charging buckets is fully utilized, the straight section of each weighing charging bucket can also be in an egg shape (as shown in figure 9 b), and the egg-shaped section can be in the following section: the profile of the furnace is arc-shaped, one end of the furnace is a big end in the long axis direction, the other end is a small end, and the small end faces the center line 0 of the blast furnace.
The bell-less charging device with the four weighing charging pots has the following advantages:
1) four weigh the material jar and can each other be spare parts, and the stand-by ability is strong. Once a single bucket fails, the bucket can be repaired on line under normal conditions, and the probability of unplanned damping down and wind reduction can be greatly reduced.
2) The four weighing material tanks are uniformly arranged, so that the distribution segregation of the furnace burden entering the furnace is reduced, and a certain furnace burden segregation compensation means is provided.
3) The large ore batch can be respectively arranged in two or more tanks, the volume of a single charging bucket is smaller, so that the total height of the charging equipment is also reduced, the breaking of furnace burden in the charging process is reduced, the uniform granularity of the furnace burden is ensured, the pressure equalizing time of the charging buckets is shortened, the effective charging time of weighing the charging buckets is increased, and the charging capacity of the equipment is improved.
4) The four-tank bell-less top charging equipment can realize charging and distributing of various materials.
5) The valve plate on the material flow adjusting valve box is driven at two sides, namely, two sides of the valve plate are connected with the transmission shaft, and the valve plate is driven to rotate synchronously by the driving mechanisms at two sides, so that the stability of the valve plate in the rotating process is very good, and the influence on the abrasion of a sealing ring and a bearing is very small. Meanwhile, the sealing and supporting structure of the regulating valve box is simple, the sealing performance and the replaceability are good, and the field maintenance operation is facilitated.
6) The lower sealing valve in the lower sealing valve box adopts a through shaft type design, and the two ends of the shaft are provided with the bearing seats, so that the shaft drives the valve plate to rotate more stably, the bearing is stressed uniformly, and the service life of the bearing and the oil seal is greatly prolonged.
7) The material flow regulating valve and the lower sealing valve in the existing charging equipment are installed in the same box body, and the lining plate of the octagonal chute is difficult to replace. The material flow regulating valve box and the lower sealing valve box which are adopted at present are separated, and are provided with the replacing guide rails, and the material flow regulating valve box can be singly moved out to replace the octagonal chute.
8) The weighing system of the existing charging equipment is arranged at the weighing support of the valve box, is greatly influenced by the hanger and the corrugated pipe of the valve box, and is inaccurate in weighing. The weighing device of the charging equipment is arranged on the weighing charging bucket, so that the weighing device is hardly influenced and the weighing result is accurate.
9) The valve plate of the material flow adjusting valve is opened towards the direction far away from the center line of the blast furnace, so that the material flow is closer to the center line of the blast furnace when the material weighing tank is used for discharging, the material distribution is more uniform, and the impact abrasion of the material flow to the central throat pipe is reduced.
10) Weigh the eccentric structure of material jar and make the discharge gate be close to blast furnace center line more to eight corners chute become vertical direction, make like this that the material flows perpendicularly and concentrate near blast furnace center line, thereby make the cloth more even. Meanwhile, a good transition is formed between the weighing material tank and the octagonal chute, so that the materials in the weighing material tank can integrally move downwards during blanking, and the material granularity segregation is further reduced.
11) Each maintenance population of the lower sealing valve box corresponds to each inclined slideway of each lower sealing valve and each hopper respectively, so that internal parts can be maintained and replaced conveniently.
12) Wherein two valve ports on the lower sealing valve box can be opened simultaneously, have two and weigh the function that the material jar can the unloading simultaneously.
13) Because a plurality of sets of weighing material tanks are added, the service lives of the weighing material tanks, the material flow regulating valve box and the lower sealing valve are longer than that of two tanks or three tanks.
Claims (13)
1. A four-tank bell-less charging device comprises a weighing charging tank, a material flow regulating valve box, a lower sealing valve box and an intermediate funnel; the method is characterized in that:
the four weighing material tanks are uniformly distributed in the circumferential direction relative to the center line of the blast furnace; the central line of the weighing material tank deviates from the central line of the blast furnace and is arranged;
the material flow regulating valve box is arranged below the weighing material tank, the upper port of the material flow regulating valve box is correspondingly connected with the outlet of the weighing material tank, the lower port of the material flow regulating valve box is correspondingly connected with the valve port at the upper end of the lower sealing valve box, and the lower port of the lower sealing valve box is hermetically connected with the upper port of the middle funnel;
the material flow regulating valve boxes correspond to the weighing material tanks in quantity, each material flow regulating valve box comprises an octagonal chute and a material flow regulating valve, a valve plate of each material flow regulating valve is arranged at the lower port of the octagonal chute and is connected with a driving mechanism, and the valve plate enlarges the lower port of the octagonal chute when moving in the direction far away from the center line of the blast furnace; the octagonal chute is of a funnel shape, wherein the inner side chute wall close to one side of the center line of the blast furnace is a vertical side wall, and the outer side chute wall is matched with the opening and closing track of the valve plate;
the upper end of the lower sealing valve box is provided with four valve ports which are in sealing connection with the lower port of each material flow regulating valve box above; the lower sealing valve box is also provided with a lower port;
the upper port of the middle funnel is connected with the lower port of the lower sealing valve box in a sealing manner, and the lower port of the middle funnel is connected with a distributing device.
2. The bell-less charging installation according to claim 1, wherein: the lower sealing valve box is integral and is provided with valve ports corresponding to the weighing material tanks in number; or,
the lower sealing valve box is split.
3. The bell-less charging installation according to claim 2, wherein: the split type lower sealing valve box comprises a plurality of lower sealing valve boxes, the number of the lower sealing valve boxes is matched with that of the material flow adjusting valve boxes above the lower sealing valve boxes, the lower sealing valve boxes correspond to the material flow adjusting valve boxes one by one, and one valve port is arranged above each lower sealing valve box.
4. Bell-less charging installation according to claim 1 or 2 or 3, characterized in that: each valve port in the lower sealing valve box is provided with a lower sealing valve which comprises a valve cover, a rotating shaft and a driving device, wherein each valve cover is fixedly arranged on the rotating shaft, the rotating shaft is connected with the driving device, so that the valve cover can realize the opening and closing actions of the valve port through rotating along with the rotating shaft, and when the valve cover seals the valve port, the corresponding weighing material tank is isolated from the gas in the blast furnace.
5. The bell-less charging apparatus as set forth in claim 3, wherein: the lower sealing valve box is split, and an independent valve box is correspondingly arranged below each weighing material tank; the valve box is provided with an upper valve cavity and a lower valve cavity which form the material flow regulating valve box and a lower sealing valve box, the octagonal chute and the material flow regulating valve are installed in the upper valve cavity, the valve port is arranged between the upper valve cavity and the lower valve cavity, and a lower sealing valve is correspondingly installed in the lower valve cavity and comprises the valve cover, a rotating shaft connected with the valve cover and a driving device connected with the rotating shaft; the upper port of the valve box is hermetically connected with the lower port of the weighing material tank, and the lower port of the valve box is hermetically connected with the middle funnel through a bottom corrugated pipe compensator.
6. The bell-less charging apparatus as set forth in claim 5, wherein: the weighing charging bucket is provided with a compressing device, one end of the compressing device is connected with the blast furnace frame, the other end of the compressing device is connected with the weighing charging bucket, and the charging bucket is connected to the furnace top frame through the compressing device.
7. The bell-less charging installation according to claim 2 or 3, wherein: and for the integral or split lower sealing valve box directly or indirectly fixed on the furnace roof frame, a corrugated pipe compensator is arranged between the material flow adjusting valve box and the lower sealing valve box.
8. The bell-less charging installation according to claim 1, wherein: the connecting structure of the valve plate of the material flow adjusting valve is as follows: the valve plate is arranged on the rocker arm, transmission shafts are arranged on two sides of the rocker arm, the transmission shafts on two sides extend out of and are supported on the wall of the material flow adjusting valve, a bearing device and a shaft sealing element are arranged between the transmission shafts and the wall of the tank to seal the transmission shafts and the wall of the tank, and the extending parts of the transmission shafts are respectively connected with a driving mechanism, so that the two sets of driving mechanisms synchronously drive the valve plate to rotate, and the valve plate rotates along with the transmission shafts within a set angle range; or,
each valve port in the lower sealing valve box is provided with a lower sealing valve which comprises a valve cover, a rotating shaft connected with the valve cover and a driving device connected with the rotating shaft, each valve cover is connected with the lower sealing valve box in a through shaft type structure, namely, the valve cover on the lower sealing valve box is fixedly arranged on the rotating shaft, two ends of the rotating shaft penetrate through the lower sealing valve box, a shaft sealing ring and a bearing seat are arranged between the wall of the valve box and the rotating shaft, and the end part of the rotating shaft is connected with a driving mechanism; or,
the rotating angle of the valve cover is more than 100 degrees; or,
the rotating angle of the valve cover is between 100 and 110 degrees; or,
the height of the lower sealing valve box is larger than the diameter of the valve cover; or,
the distances from each valve port of the lower sealing valve box of the four-tank bell-less charging equipment to the center line of the blast furnace are equal, and the center point of each valve port forms a regular quadrangle; or,
a centering device is arranged between the middle funnel and the distributing device, the centering device is a conical barrel, the axis of the barrel is positioned on the central line of the blast furnace and is positioned in the corrugated pipe compensator connected with the lower part of the middle funnel, the upper end of the barrel is higher than the outlet of the middle funnel, and the lower end of the barrel is connected with a central throat pipe of the distributing device; or,
the lower section of the weighing charging bucket is a conical cylinder body with the outer side inclined and the inner side basically vertical, and the middle section is a straight section.
9. The bell-less charging apparatus as set forth in claim 4, wherein: the connecting structure of the valve plate of the material flow adjusting valve is as follows: the valve plate is arranged on the rocker arm, transmission shafts are arranged on two sides of the rocker arm, the transmission shafts on two sides extend out of and are supported on the wall of the material flow adjusting valve, a bearing device and a shaft sealing element are arranged between the transmission shafts and the wall of the tank to seal the transmission shafts and the wall of the tank, and the extending parts of the transmission shafts are respectively connected with a driving mechanism, so that the two sets of driving mechanisms synchronously drive the valve plate to rotate, and the valve plate rotates along with the transmission shafts within a set angle range; or,
each valve port in the lower sealing valve box is provided with a lower sealing valve which comprises a valve cover, a rotating shaft connected with the valve cover and a driving device connected with the rotating shaft, each valve cover is connected with the lower sealing valve box in a through shaft type structure, namely, the valve cover on the lower sealing valve box is fixedly arranged on the rotating shaft, two ends of the rotating shaft penetrate through the lower sealing valve box, a shaft sealing ring and a bearing seat are arranged between the wall of the valve box and the rotating shaft, and the end part of the rotating shaft is connected with a driving mechanism; or,
the rotating angle of the valve cover is more than 100 degrees; or,
the rotating angle of the valve cover is between 100 and 110 degrees; or,
the height of the lower sealing valve box is larger than the diameter of the valve cover; or,
the distances from each valve port of the lower sealing valve box of the four-tank bell-less charging equipment to the center line of the blast furnace are equal, and the center point of each valve port forms a regular quadrangle; or,
a centering device is arranged between the middle funnel and the distributing device, the centering device is a conical barrel, the axis of the barrel is positioned on the central line of the blast furnace and is positioned in the corrugated pipe compensator connected with the lower part of the middle funnel, the upper end of the barrel is higher than the outlet of the middle funnel, and the lower end of the barrel is connected with a central throat pipe of the distributing device; or,
the lower section of the weighing charging bucket is a conical cylinder body with the outer side inclined and the inner side basically vertical, and the middle section is a straight section.
10. The bell-less charging installation according to claim 1, wherein: the middle section of the weighing material tank is a straight section, the section of the weighing material tank is circular or egg-shaped, and the egg-shaped section is the section as follows: the profile of the furnace is arc-shaped, one end of the furnace is a big end in the long axis direction, the other end is a small end, and the small end faces the center line of the blast furnace.
11. The bell-less charging apparatus as set forth in claim 8, wherein: the middle section of the weighing material tank is a straight section, the section of the weighing material tank is circular or egg-shaped, and the egg-shaped section is the section as follows: the profile of the furnace is arc-shaped, one end of the furnace is a big end in the long axis direction, the other end is a small end, and the small end faces the center line of the blast furnace.
12. The bell-less charging apparatus as set forth in claim 4, wherein: the mounting structure of each valve cover is as follows: the rotating shaft connected with the valve cover on the lower sealing valve box is arranged on one side far away from the center line of the blast furnace, so that when each valve cover is opened, the valve cover rotates towards the direction far away from the center line of the blast furnace, and when the valve cover is fully opened, the valve cover stays on the outer side of the valve port, correspondingly far away from the center line of the blast furnace, of the lower sealing valve box.
13. Bell-less charging installation according to claim 5 or 8, wherein: the mounting structure of each valve cover is as follows: the rotating shaft connected with the valve cover on the lower sealing valve box is arranged on one side far away from the center line of the blast furnace, so that when each valve cover is opened, the valve cover rotates towards the direction far away from the center line of the blast furnace, and when the valve cover is fully opened, the valve cover stays at the outer side of the valve port, correspondingly far away from the center line of the blast furnace, of the lower sealing valve box.
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| CN2010202723731U CN201883102U (en) | 2010-07-23 | 2010-07-23 | Four-tin bell-less charging device |
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| CN2010202723731U CN201883102U (en) | 2010-07-23 | 2010-07-23 | Four-tin bell-less charging device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230044A (en) * | 2010-07-23 | 2011-11-02 | 北京首钢机电有限公司 | Four-bucket bell-less charging device |
| CN102296134A (en) * | 2011-09-09 | 2011-12-28 | 中冶南方工程技术有限公司 | Bell-less top three 3-parallel bunker valve box |
| CN102925604A (en) * | 2012-11-12 | 2013-02-13 | 中冶南方工程技术有限公司 | Blast furnace charge-flow adjusting valve device suitable for high-temperature furnace charge |
| CN109022655A (en) * | 2018-09-18 | 2018-12-18 | 中冶东方工程技术有限公司 | Ultra low type bell-less BF tep feeding device |
| CN113106179A (en) * | 2021-05-07 | 2021-07-13 | 中钢集团西安重机有限公司 | Valve cover device for blocking blast furnace gas and opening and closing method |
| CN114774604A (en) * | 2022-05-24 | 2022-07-22 | 宝武集团鄂城钢铁有限公司 | Furnace top equipment connecting transition sealing device and blast furnace top charging equipment |
| CN116287513A (en) * | 2023-01-10 | 2023-06-23 | 北京首钢股份有限公司 | Blast furnace discharging device and discharging method |
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2010
- 2010-07-23 CN CN2010202723731U patent/CN201883102U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230044A (en) * | 2010-07-23 | 2011-11-02 | 北京首钢机电有限公司 | Four-bucket bell-less charging device |
| CN102296134A (en) * | 2011-09-09 | 2011-12-28 | 中冶南方工程技术有限公司 | Bell-less top three 3-parallel bunker valve box |
| CN102925604A (en) * | 2012-11-12 | 2013-02-13 | 中冶南方工程技术有限公司 | Blast furnace charge-flow adjusting valve device suitable for high-temperature furnace charge |
| CN102925604B (en) * | 2012-11-12 | 2014-10-01 | 中冶南方工程技术有限公司 | Blast furnace charge-flow adjusting valve device suitable for high-temperature furnace charge |
| CN109022655A (en) * | 2018-09-18 | 2018-12-18 | 中冶东方工程技术有限公司 | Ultra low type bell-less BF tep feeding device |
| CN113106179A (en) * | 2021-05-07 | 2021-07-13 | 中钢集团西安重机有限公司 | Valve cover device for blocking blast furnace gas and opening and closing method |
| CN114774604A (en) * | 2022-05-24 | 2022-07-22 | 宝武集团鄂城钢铁有限公司 | Furnace top equipment connecting transition sealing device and blast furnace top charging equipment |
| CN114774604B (en) * | 2022-05-24 | 2023-09-22 | 宝武集团鄂城钢铁有限公司 | Furnace top equipment connection transition sealing device and blast furnace top charging equipment |
| CN116287513A (en) * | 2023-01-10 | 2023-06-23 | 北京首钢股份有限公司 | Blast furnace discharging device and discharging method |
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Inventor after: Zhang Weidong Inventor after: Miao Muchi Inventor after: Wang Yi Inventor after: Wang Tao Inventor after: Gao Zhiping Inventor after: Zhang Mancang Inventor after: Li Guohua Inventor after: Wang Xiaolong Inventor after: Li Zhe Inventor before: Zhang Weidong Inventor before: Miao Muchi Inventor before: Wang Yi Inventor before: Wang Tao Inventor before: Zhang Mancang Inventor before: Li Guohua Inventor before: Wang Xiaolong Inventor before: Li Zhe |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG WEIDONG MIAO MUCHI WANG YI WANG TAO ZHANG MANCANG LI GUOHUA WANG XIAOLONG LI ZHE TO: ZHANG WEIDONG MIAO MUCHI WANG YI WANG TAO GAO ZHIPING ZHANG MANCANG LI GUOHUA WANG XIAOLONG LI ZHE |
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Granted publication date: 20110629 |