JPS6113541Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an automatic hot spray nozzle device for a pig iron mixer vehicle.

Hot spraying of a furnace body with a narrow opening and complicated shape, such as a pig iron mixer car, makes it impossible to visually check during construction, and the movement of the nozzle is complicated in order to be able to spray the entire furnace wall. This method has not been implemented because it is necessary to provide a drive mechanism at the part where the nozzle is inserted into the furnace, and it is difficult to take measures for heat insulation.

For this reason, conventionally, a lining device for a pig iron truck or the like has been proposed in which a collapsible shunting pipe is configured to move on a semi-circular gutter. The furnace body, such as the pig iron mixer car, must be tilted in accordance with the movement of the pig iron mixer, which not only is not easy to operate, but also has drawbacks such as the inability to reliably check the condition of the construction site.

Therefore, this idea makes it possible to carry out hot spraying according to the condition of the surface to be sprayed inside the furnace body of a pig iron mixer truck, etc., which has heat insulation measures and is captured by a television camera that is always directed in almost the same direction as the nozzle tip. The purpose of this invention is to provide an automatic hot spray nozzle device for pig iron mixer cars, etc.

In order to achieve this purpose, the hot automatic spray nozzle device for the pig iron mixer car according to this invention is provided with a rotary table on the underframe through which the pig iron mixer car can pass, and the nozzle body can be raised and lowered on this rotary table. A heat-insulated drive mechanism in which a supporting nozzle support is tiltably mounted, a horizontal nozzle is rotatably and tiltably attached to the tip of the nozzle body via a rotary joint, and this horizontal nozzle rotates and tilts the horizontal nozzle. and a heat-proof and dust-proof television camera mounted so as to always point toward the surface to be sprayed; It is characterized by consisting of a horizontal nozzle drive shaft that rotates and tilts according to the condition of the spray target surface captured by the horizontal nozzle, and a universal joint surrounded by a heat-insulating cover that connects the horizontal nozzle.

This invention will be further explained below with reference to the drawings.

FIG. 1 schematically shows an embodiment of this invention. Reference numeral 3 denotes an underframe configured so that the pig iron mixer 5 on the rail 4 can pass under the underframe. A rotary table 6 is provided which can be rotated by a suitable drive device (not shown). As shown in the figure, a nozzle support 8 is mounted on the rotary table 6 so as to be tiltable in only one direction by means of a fluid cylinder 7. A main nozzle 9 equipped with a dual cooling mechanism is connected to the nozzle support 8 to a lifting mechanism (not shown) provided on the nozzle support 8, and the tip of the main nozzle body 9 rotates. The main nozzle 9 can be raised and lowered through the upper part of the table 6 and the underframe 3 into the opening of the pig iron mixer 5 located below the underframe 3, and the rear end of the main nozzle 9 supplies spraying material through the hose 2. Connected to machine 1.

A horizontal nozzle 13 is rotatably and tiltably connected to the tip of the main nozzle 9 via joints 10 and 11, as will be explained in detail later.
3 is driven by a drive shaft 17 via a gear box 12. The drive shaft 17 is provided with a drive and, like the main nozzle 9, is slidably mounted on the nozzle support 8. That is, the main nozzle 9
can be tilted by operating the fluid cylinder 7 to tilt the nozzle support 8, raised and lowered by the operation of a lifting mechanism provided on the nozzle support 8, and rotated by rotating the rotary table 6.

In the illustrated device, the main nozzle 9 is removed from the opening of the pig iron mixer 5 when it is in the highest position, and the spraying operation is performed when it is in the lowest position. 9
It is fed to the top or rear end and passes through this main nozzle 9 and is mixed with an additive from an additive dosing device, for example water, attached to the horizontal nozzle 13, and the tip of the tip of the horizontal nozzle 13. It is discharged from the nozzle 15.

FIG. 2 shows the nozzle mechanism in detail, and parts corresponding to those in FIG. 1 are designated by the same reference numerals. That is, the second
In the figure, 6 is a rotary table, 7 is a hydraulic cylinder, 8 is a nozzle support, 9 is a main nozzle, and 10
is a rotary joint, 11 is a rotary joint, 12 is a gear box, 1
3 is a horizontal nozzle, 14 is a water adder, 15 is a tip nozzle, 16 is a guide fitting, 17 is a horizontal nozzle drive shaft, 18 is a pin, 19 is a TV camera case, 2
0 is the main nozzle fixing metal fitting, 21 is the coupling, 22 is the screw shaft, 23 is the pin, 2
4 is a hydraulic cylinder, 25 is a coupling, 26 is a screw shaft, 27 is a slider, 28 is a hydraulic motor, 29 is a coupling, 30 is an elbow, 3
1 is a universal joint, 32 is a socket, 33 is a water-cooled flexible hose, 34 is a SUS flexible tube, 35a is a TV camera cord, 36 is SUS
Flexible tube, 37 is SUS flexible tube, 38 is SUS flexible tube, 3
9 is a hydraulic cylinder, and these elements are constructed as shown.

As the screw shaft 22 directly connected to the hydraulic cylinder 39 rotates, the main nozzle fixing fitting 20 slides up and down within the nozzle support 8, and therefore the main nozzle 9 fixed to the nozzle support 8 is rotated. goes up and down.

The rotation of the horizontal nozzle drive shaft 17 directly connected to the hydraulic motor 28 is transmitted to the bevel gear in the gear box 12, thus rotating the horizontal nozzle 13, and the rotation is transmitted to the tip nozzle 15 via the water adder 14. On the other hand, an elbow 30 connecting the horizontal nozzle 13 and the main nozzle 9 is provided with a rotary joint 10 so that the rotation of the horizontal nozzle 13 is not transmitted to the main nozzle 9.

Furthermore, the slider 27 slides within the guide fitting 16 due to the rotation of the screw shaft 26 that is directly connected to the hydraulic cylinder 24 . Therefore, the horizontal nozzle drive shaft 17, which is directly connected to the hydraulic motor 28 fixed to the slider 27, moves up and down, whereby the horizontal nozzle 13 tilts about the rotary joint 10.

Further, the guide fitting 16 is attached to the main nozzle fixing fitting 20 with a pin 23, so that when the horizontal nozzle 13 is tilted, the horizontal nozzle drive shaft 17
Do not apply excessive force to the

The installation of the television camera is shown in detail in FIG. 3, and the television camera 35 is set in the cylindrical camera case 19 with its cylindrical axis and center line aligned. The television camera case 19 is attached to the horizontal nozzle 13, and the attachment angle can be arbitrarily selected by adjusting the attachment bolt 19a.

Note that the tip nozzle 15 is often used with a curved tip. Therefore, the mounting angle of the television camera 35 is determined according to the tip nozzle 15.

Further, since the camera case 19 is attached to the horizontal nozzle 13, it rotates and tilts as one unit with the tip nozzle 15. This allows the television camera 35 to always show the sprayed surface.

As shown in FIG. 3, the TV camera case 19 has a water-cooled structure with double walls on the outer periphery and rear part, and the heat-resistant glass 19b is attached to the glass holding fitting 19c, the glass receiving fitting 19d, and the glass mounting bolt 19e in the front part. It is installed accordingly. Cooling water is flowed to the outer periphery and rear part to prevent conduction of heat from the outside, and air is allowed to flow into the case 19 to prevent a rise in temperature inside the case 19 due to radiated heat from the glass 19b. Insulating material is also wrapped around the outer periphery and rear part to suppress the rise in temperature of the cooling water.

Furthermore, the television camera cord 35a is thermally insulated by using the cooling water and air sent to the camera case 19. That is, the television camera cord 35a is inserted into the water-cooled flexible hose 33 as shown in FIG. The water-cooled flexible hose 33 in FIG. 3 consists of two stainless steel flexible tubes with metal fittings welded to both ends, air is supplied into the inner tube, cooling water is supplied between the inner tube and the outer tube, and Insulating material may be wrapped around the outer periphery of the outer tube and fitting to a suitable thickness. The air that has passed through the inner tube is connected to the TV camera case 1.
After cooling the television camera body 35 inside the
It is discharged to the outside through the groove 19f (FIGS. 4 and 5) of the glass holder 19d.

The shape of the glass holder 19d is shown in FIGS. 4 and 5, and is provided with a large number of radial grooves 19f.

The cooling water is divided into two channels as shown in Figure 3.
That is, water flowing from the upper end of the water-cooled flexible tube 33 fixed to the main nozzle 9 flows into the camera case 19 through the SUS flexible tube 34 while cooling the television camera cord 35a, thereby cooling the camera case 19. The water is then sent to the water adder 14 through the SUS flexible tube 36 and used as kneading water for refractory materials. On the other hand, water is supplied from the upper end of the pipe welded and attached to the main nozzle 9 and flows into the gear box 12 through the SUS flexible tube 37. After cooling it, it passes through the SUS flexible tube 38 and enters the double pipe structure. It passes through the gap in the main nozzle 9 and is discharged from the upper part of the nozzle while being cooled.

Air supplied from the upper end of the water-cooled flexible tube 33 is discharged into the television camera case 19, and then discharged into the furnace from the surrounding area of the heat-resistant glass 19b.

On the other hand, the air supplied from the upper end of the horizontal nozzle drive shaft 17 descends while cooling it, and as shown in FIG. 6, is discharged into the flexible metal fitting protective cover 31a to cool the flexible metal fitting.

FIG. 6 shows in detail an embodiment of the drive transmission section of the horizontal nozzle 13. is attached to the horizontal nozzle 13 and is locked to the horizontal nozzle 13 by a rotation stopper piece 13a so that both rotate integrally. A bevel gear 12 is provided around the nozzle support tube 12c.
a is fixed, and this bevel gear 12a is connected to the bushing 12.
It meshes with another bevel gear 12b that is supported perpendicularly to the axis of the horizontal nozzle 13 in a gear box 12 mounted around the nozzle support tube 12c via d and 12e. The shaft of this other bevel gear 12b is connected to the drive shaft 17 via a universal joint 31. The universal joint 31 is covered with a flexible heat-insulating cover 31a.

FIG. 7 shows a modified embodiment of the drive transmission section of the horizontal nozzle 13. In this modified embodiment, the drive shaft 17 is a hollow shaft and is provided with a radial opening 17a adjacent to the connection portion with the universal joint 31. Universal joint 3
1 is surrounded by a plurality of cylindrical iron covers 31b, and around these covers 31b, springs 31c are arranged at approximately equal intervals along the longitudinal direction of all the covers 31b, and a flexible It is wrapped in heat-resistant material 31d. An axial opening 31e is provided in the end face of the bevel gear 12a of the thus constructed heat insulating structure on its shaft side. In this variant, therefore, air is supplied through the hollow drive shaft 17 through the opening 17a into the iron cover 31b to cool the universal joint 31, and is discharged through the axial opening 31e.

Figures 8 and 9 show the structure of the water adder 14, and the water flowing in from the water receiving port 14a is transferred to the water box 14b.
Multiple spout holes 1 to 2 mm in diameter pooled in
4d, it is ejected into the pipe 14c where the refractory material is being pneumatically transported.

The operation of the device configured in this way will be explained below.

When using this device, it is preferable to divide the furnace wall surface to be sprayed into a number of sections each narrower than the field of view of the television camera 35, set the nozzle position that can spray the center of each section as a reference point, and set the nozzle position that can spray the center of each section as a reference point. The trajectory that passes through the reference points of all sections and returns is set as the main trajectory. In other words, due to the shape of the furnace body of the pig iron mixer, etc., as the main nozzle 9 descends, the main nozzle 9
In addition, the position and direction of the horizontal nozzle 13 are restricted from time to time to prevent omissions in construction and collision of the nozzle with the furnace wall. Therefore, the movement pattern of the nozzle when the nozzle is inserted into the furnace body can be set in advance.

After positioning the furnace body with respect to this device, turn on the operation switch (not shown) and move the main nozzle 9 and the horizontal nozzle 13 along the preset main trajectory while attaching the main nozzle 9 and the horizontal nozzle 13 to the horizontal nozzle 13. A television camera 35 scans each section of the furnace wall, a monitor device (not shown) determines whether or not a spraying operation is necessary for each section, the condition of the furnace wall is inspected, and the results are used to control the operation. and stored in a device (not shown).

In this state, when the spray operation switch (not shown) is turned on, the horizontal nozzle 13 starts moving from the starting point along a preset trajectory, and the area that needs spraying in the above-mentioned inspection operation is moved. It will advance to that point and stop automatically at that position. The operator manually sprays this section, and when the operator presses the spray end button at the same time as the spraying ends, the horizontal nozzle 13 advances to the next section. In this case, if necessary, the spraying operation of the horizontal nozzle 13 may be made to operate automatically instead of being operated manually. By repeating the above-described spraying operation in this way, the entire furnace wall can be sprayed.

As explained above, according to the device of this invention, a television camera is installed in the nozzle so that the condition of the furnace wall inside the furnace body can be observed from outside the furnace body to be sprayed, and the nozzle body and the horizontal nozzle Since it is configured to be able to rise and fall, rotate and tilt freely,
There is no need for workers to work inside the furnace, and hot spraying work is now possible.As a result, the construction period was reduced to 12 days, which is 5 days for cooling, 3 days for cleaning, and 4 days for drying and heating. What used to require 6 hours to spray
The total time was reduced to 18 hours, including 12 hours for drying and heating, resulting in a 19.2% operating rate for mixed iron trucks.
In addition, it is possible to save 82.7% of labor by shortening the spraying and drying heating work time.Furthermore, there is no need to cool down during the spraying work, so lining 1
Energy saving of 29000KcaI/year per kg was achieved.

Naturally, the device according to this invention can also be applied to objects where it is not possible for the worker to directly observe the work surface to be sprayed, and if necessary, the results (information) of the inspection operation using a television camera can be obtained.
It is also possible to electronically control the nozzle drive mechanism based on this to fully automate the device.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional front view schematically showing an embodiment of the device according to this invention, FIGS. 2 and 3 are partial sectional views showing an enlarged structure of the main part of the device according to this invention, and The figures are a front view and a sectional view showing an enlarged view of the structure of the glass holder in Fig. 3, Fig. 6 is a partial sectional view showing an enlarged structure of the horizontal nozzle portion, and Fig. 7 is a main part of the device of this invention. Enlarged partial sectional view showing a modified embodiment of the universal joint forming the parts, Nos. 8 and 9
The figure is an enlarged sectional view showing the structure of the water adder and A-
It is an A sectional view. In the figure, 1: material feeder, 2: material transport hose,
3: Underframe, 4: Rail, 5: Furnace body, 6: Rotary table, 7: Fluid cylinder, 8: Nozzle support,
9: Main nozzle, 10: Rotary joint, 11: Rotary joint, 12: Gear box, 13: Horizontal nozzle, 14:
Water adder, 15: Tip nozzle, 16: Guide fitting, 17: Horizontal nozzle drive shaft, 18: Pin, 1
9: TV camera case.

Claims (1)

[Claims for Utility Model Registration] 1. A rotary table 6 is provided on the underframe 3 through which the pig iron mixer 5 can pass, and a nozzle support 8 supports the nozzle body 9 on the rotary table 6 so as to be movable up and down.
A horizontal nozzle 13 is attached to the tip of the nozzle body 9 so as to be rotatable and tiltable. The horizontal nozzle 13 is equipped with a mold drive mechanism and a heat-proof and dust-proof TV camera 35 mounted so as to always face the spray target surface, and the heat-proof drive mechanism of the horizontal nozzle 13 is slidably mounted on the nozzle support 8 of the nozzle body 9 and A horizontal nozzle drive shaft 17 that rotates and tilts the nozzle 13 according to the state of the spray target surface captured by the heat-proof and dust-proof television camera 35, and a heat-insulating cover 31a that connects the horizontal nozzle drive shaft 17 to the horizontal nozzle 13. 1. An automatic hot spray nozzle device for an iron mixer vehicle, characterized in that it consists of an enclosed universal joint 31. 2. The hot automatic spraying nozzle device for a pig iron mixer vehicle according to claim 1, which is a utility model registered and is configured to use the cooling water after cooling the heat-proof and dust-proof television camera 35 as kneading water for the spraying material. .