CN111203304B

CN111203304B - A mill for preparing calcium carbonate powder

Info

Publication number: CN111203304B
Application number: CN202010173557.0A
Authority: CN
Inventors: 王华珍; 曾志远; 曾向嵩; 林红兵
Original assignee: Guangdong Liweida Mining Industry Co ltd
Current assignee: Jining Economic Development Zone Haoyu Desulfurizer Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-06-18
Anticipated expiration: 2040-03-13
Also published as: CN111203304A

Abstract

The technical field of the ore pulverizing equipment of the present invention, in particular, relates to a pulverizer for preparing calcium carbonate powder, which includes a main body with a crushing cavity inside the main body, and a feeding port and a discharging port are arranged on the main body. A grinding assembly is arranged inside the main body, and the grinding assembly includes a main shaft, a plurality of grinding rollers and a driving member for driving the main shaft to rotate; wherein, the main shaft is vertically arranged and located on the bottom wall of the main body. In the center position, the grinding roller is installed on the main shaft and is spaced apart; the position inside the main body that fits the grinding roller is the grinding surface, and the main shaft is installed with a scraper that fits with the grinding surface . The invention uses a scraper to scrape the grinding surface, so that the ground powder is not easy to stick to the grinding surface of the pulverizer, and has the advantages of not easily affecting the grinding effect and prolonging the grinding time.

Description

Powder mill for preparing calcium carbonate powder

Technical Field

The invention relates to the technical field of ore crushing equipment, in particular to a pulverizer for preparing calcium carbonate powder.

Background

The powdery calcium carbonate with the calcium carbonate powder value has an important effect in the water-based paint industry, the building field and the chemical field, and when the calcium carbonate powder is prepared, a calcium carbonate raw material is crushed and then ground by using a grinding mill.

Chinese patent No. CN204448163U discloses a double-layer air inlet channel suspension roller mill, which comprises a base, a grinding roller arranged on the base, a middle machine body and an air inlet channel arranged between the base and the middle machine body, wherein the air inlet channel is composed of an upper channel and a lower channel, and the middle machine body is fixed on the upper channel through bolts; a shunting cover is arranged between the grinding roller and the middle machine body, an interlayer formed between the middle machine body and the shunting cover forms a shunting channel, and the upper layer channel is communicated with the shunting channel; the lower layer channel is communicated with a main flow channel of the main machine powder grinding cavity; the air inlet channel formed by the upper layer channel and the lower layer channel is provided with an air adjusting door, and the air flow entering the main flow channel and the flow dividing channel can be adjusted by the air adjusting door. When the flour mill is used, materials are ground through the attaching rotation of the suspension roller and the grinding surface on the inner wall of the flour mill, and then powder is blown out through wind blowing.

When the existing flour mill is used, the ground powder can be adhered to the grinding surface of the flour mill, when the powder is adhered to the grinding surface, the grinding surface is uneven, gaps appear when the grinding roller is adhered to the grinding surface, grinding is not carried out, and accordingly the grinding effect is influenced, and the grinding time is prolonged.

Disclosure of Invention

In view of the disadvantages of the prior art, the present invention aims to provide a powder mill for preparing calcium carbonate powder, which aims to solve the above-mentioned problems.

The above object of the present invention is achieved by the following technical solutions:

the grinding machine comprises a main machine body, wherein a crushing cavity is formed in the main machine body, a feed inlet and a discharge outlet are formed in the main machine body, a grinding assembly is arranged in the main machine body, and the grinding assembly comprises a main shaft, a plurality of grinding rollers and a driving piece for driving the main shaft to rotate; the grinding rollers are arranged on the main shaft and distributed at intervals; the main machine body is internally provided with a grinding surface at the position attached to the grinding roller, and the main shaft is provided with a scraper attached to the grinding surface.

Through adopting above-mentioned technical scheme, when using this milling machine, the material passes through the feed inlet and gets into broken chamber, driving piece drive main shaft is rotatory, the main shaft is rotatory to drive the grinding roller and rotates, then rotatory with the abrasive surface through the grinding roller, laminating department through grinding roller and abrasive surface grinds the material, the scraper is rotatory under the drive of main shaft, scrape the dirt through the scraper and handle the abrasive surface, thereby make the powder after the grinding difficult to glue in the abrasive surface of milling machine, and then the effect of difficult influence grinding, the time of extension grinding.

The invention is further configured to: fixedly connected with mounting bracket on the main shaft, the mounting bracket is the level setting, the scraper install in on the mounting bracket, the mounting bracket is kept away from the one end of main shaft is provided with the sliding ball, it has the sliding tray to open on the host computer internal side wall, the sliding ball inlay card in the sliding tray.

Through adopting above-mentioned technical scheme, when using this milling machine, a certain amount of rocking can appear at rotatory in-process to the main shaft to influence the effect of grinding, the mounting bracket slides through sliding ball and sliding tray and is connected, plays the supporting role to the main shaft through the mounting bracket, thereby reduces the volume of rocking of main shaft.

The invention is further configured to: the mounting bracket comprises an outer tube and an inner tube, the outer tube is connected with the inner tube in a sliding mode, the outer tube is fixedly connected with the main shaft, the inner tube is fixedly connected with the sliding ball, a limiting plate is arranged on the outer tube, and a damping spring is arranged between the limiting plate and the sliding ball.

Through adopting above-mentioned technical scheme, when the main shaft appears rocking, slide each other between outer tube and the inner tube to make damping spring take place deformation, produce elasticity when damping spring deformation, this elasticity and the opposite direction of deformation and trend spring resume initial condition, thereby play the absorbing effect of buffering.

The invention is further configured to: the mounting bracket is provided with a mounting plate, the scraper is arranged at one end, far away from the mounting bracket, of the mounting plate, and a torsion spring is arranged between the scraper and the mounting plate.

Through adopting above-mentioned technical scheme, through setting up the torsional spring, the scraper supports tightly through the elasticity and the abrasive surface of torsional spring, guarantees to keep laminating between scraper and the abrasive surface, when avoiding the main shaft to rock simultaneously, and the effort is too big between scraper and the abrasive surface to lead to the scraper fracture.

The invention is further configured to: the lower end of the main machine body is communicated with an air blowing channel, the air blowing channel is communicated with an air outlet piece, and the discharge hole is located right above the air blowing channel.

Through adopting above-mentioned technical scheme, after the material ground, blow through will grind the back and form calcium carbonate powder and blow the discharge gate to realize ejection of compact function.

The invention is further configured to: the lower end of the main shaft extends towards the circumferential direction to form an installation surface, a scraper knife is installed on the installation surface, the scraper knife is arranged in an inclined mode, the upper end face of the scraper knife faces the rotation direction of the main shaft, and the lowest position of the scraper knife is attached to the inner bottom wall of the crushing cavity.

Through adopting above-mentioned technical scheme, when the main shaft is rotatory, the spiller rotates along with the main shaft, and the spiller is rotatory in the time with the material raise, makes the material move towards the grinding roller and grinding, is favorable to the material to accomplish to grind, avoids the material to pile up and leads to the comminuted insufficient in broken chamber bottom.

The invention is further configured to: the grinding roller device is characterized in that a plum blossom rack is fixedly connected to the upper end of the main shaft and is a four-fork plum blossom rack, grinding roller frames are arranged on branches of the plum blossom rack, the grinding rollers are four groups and are respectively arranged on the grinding roller frames, limiting rings are arranged at one ends, far away from the main shaft, of the branches of the plum blossom rack, and buffer springs are arranged between the limiting rings and the grinding roller frames.

Through adopting above-mentioned technical scheme, when the main shaft was rotatory, the grinding roller was driven to the plum blossom frame and was rotated, and the grinding roller probably vibrates when rotating, and when the grinding roller took place to rock, buffer spring took place to deform, produced elasticity when buffer spring deformed, and this elasticity and the opposite direction of deformation and trend buffer spring resume initial condition to play buffering absorbing effect.

The invention is further configured to: the outside of the main machine body is provided with a level gauge.

Through adopting above-mentioned technical scheme, when installation milling machine, through observing the spirit level, guarantee that the milling machine keeps the horizontality when the installation, reduce the milling machine and produce centrifugal force when leading to the main shaft rotatory because of the slope, and then lead to the host computer body to take place to rock and lead to grinding the effect not good or even lead to the incident.

The invention is further configured to: shock absorbing parts are arranged on two sides of the main machine body.

Through adopting above-mentioned technical scheme, through setting up the damping piece, when the host computer body takes place to rock, the damping piece takes place deformation, produces elasticity when the damping piece deformation, and this elasticity is opposite with the direction of deformation and trend damping piece resumes initial condition to play the absorbing effect of buffering.

The invention is further configured to: and a magnetic impurity removing piece for removing metal substances in the material is arranged at the feed inlet.

Through adopting above-mentioned technical scheme, when mixing into the metallics in the material, the host computer is loud and can take place the vibration when carrying out the crushing, leads to the grinding roller to damage even, removes miscellaneous spare through setting up magnetism, detaches the metallics in the material, from the appearance that reduces above-mentioned problem.

In summary, the invention includes at least one of the following beneficial technical effects:

1. when the pulverizer is used, the scraper is used for scraping dust on the grinding surface, so that the ground powder is not easy to adhere to the grinding surface of the pulverizer, the grinding effect is not easy to influence, and the grinding time is prolonged;

2. the shaking amount of the main shaft is reduced by arranging the mounting frame and the damping spring; when the main shaft shakes, the damping spring generates elasticity when deformed, the elasticity is opposite to the deformation direction and tends to restore the initial state of the spring, and therefore the damping effect is achieved;

3. through the feed inlet department be provided with the magnetism that metal in the material was detached except miscellaneous piece, detach the metal in the material, from reducing when smashing the big just can take place the vibration of host computer sound, lead to the appearance of grinding roller damage scheduling problem even.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic view of the internal structure of an embodiment of the present invention.

In the figure, 1, a main body; 11. a feed inlet; 111. a magnetic sundry removal piece; 12. a discharge port; 13. a shock absorbing member; 14. a level gauge; 15. a sliding groove; 16. a classifier; 2. a grinding assembly; 21. a main shaft; 211. a plum blossom frame; 2111. a grinding roller frame; 2112. a buffer spring; 22. grinding the roller; 23. a mounting frame; 231. an outer tube; 2311. a limiting plate; 232. an inner tube; 2321. a sliding ball; 233. a damping spring; 234. mounting a plate; 235. a torsion spring; 236. a scraper; 237. a scraper knife; 3. an air outlet member; 31. a blowing channel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the pulverizer for preparing calcium carbonate powder disclosed by the present invention comprises a main machine body 1, wherein a crushing cavity is arranged inside the main machine body 1, and a feed inlet 11 and a discharge outlet 12 are arranged on the main machine body 1.

Referring to fig. 2 and 3, a grinding assembly 2 is arranged inside the main body 1, and the grinding assembly 2 includes a main shaft 21, a plurality of grinding rollers 22, and a driving member for driving the main shaft 21 to rotate; wherein, the main shaft 21 is vertically arranged and is positioned at the central position of the bottom wall in the main machine body 1, and the grinding rollers 22 are arranged on the main shaft 21 and are distributed at intervals; the position of the main body 1 to be bonded to the grinding roll 22 is a grinding surface, and a scraper 236 bonded to the grinding surface is attached to the main shaft 21. In this embodiment, the grinding surface is a step shape, the grinding roller 22 and the scraper 236 are a step shape adapted to the grinding surface, wherein the driving member may be a Y225S-4 double-transmission motor and a Y315L1-4 speed reducer, or may be other motors meeting the requirements.

Further, fixedly connected with mounting bracket 23 on the main shaft 21, mounting bracket 23 are the level setting, and scraper 236 installs on mounting bracket 23, and the one end that main shaft 21 was kept away from to mounting bracket 23 is provided with sliding ball 2321, and it has sliding tray 15 to open on the main body 1 inside wall, and sliding ball 2321 inlay in sliding tray 15. When using this milling machine, main shaft 21 can appear a certain amount at rotatory in-process and rock to influence the effect of grinding, mounting bracket 23 slides through sliding ball 2321 and sliding tray 15 and is connected, plays the supporting role to main shaft 21 through mounting bracket 23, thereby reduces main shaft 21's the volume of rocking.

Specifically, the mounting bracket 23 includes an outer tube 231 and an inner tube 232, the outer tube 231 is slidably connected to the inner tube 232, the outer tube 231 is fixedly connected to the main shaft 21, the inner tube 232 is fixedly connected to the sliding ball 2321, a limiting plate 2311 is arranged on the outer tube 231, and a damping spring 233 is arranged between the limiting plate 2311 and the sliding ball 2321. When the main shaft 21 shakes, the outer tube 231 and the inner tube 232 slide with each other, so that the damping spring 233 deforms, and the damping spring 233 deforms to generate an elastic force, which is opposite to the deformation direction and tends to return to the initial state, so as to perform the buffering and damping functions.

The scraper 236 is installed in a specific manner, the mounting plate 234 is fixedly connected to the mounting frame 23, the mounting plate 234 can be welded to the mounting frame 23 and can also be fixed to the mounting frame 23 through threads, the scraper 236 is disposed at one end of the mounting plate 234, which is far away from the mounting frame 23, a torsion spring 235 is disposed between the scraper 236 and the mounting plate 234, one end of the torsion spring 235 is fixedly connected to the scraper 236, and the other end of the torsion spring 235 is fixedly connected to the mounting plate 234. Through setting up torsional spring 235, scraper 236 supports tightly through torsional spring 235's elasticity and abrasive surface, guarantees to keep laminating between scraper 236 and the abrasive surface, and when avoiding main shaft 21 to rock, the too big scraper 236 fracture that leads to of effort between scraper 236 and the abrasive surface simultaneously.

The lower end of the main body 1 is communicated with an air blowing channel 31, the air blowing channel 31 is communicated with an air outlet part 3, and the discharge hole 12 is positioned right above the air blowing channel 31. After the material is ground, the ground calcium carbonate powder is blown to the discharge hole 12 through blowing, so that the discharging function is realized. In this embodiment, the air outlet member 3 is specifically an air blower, the motor model of the air blower may be Y335M _1-6, or may be other motors meeting the requirements, the main body 1 is provided with a classifier 16 at the position of the discharge port 12, the ground material is classified and screened, the powder meeting the requirements is blown out from the discharge port 12, and the powder with larger particle size falls into the main body and is ground again.

The lower end of the main shaft 21 extends towards the circumferential direction to form an installation surface, a scraper knife 237 is installed on the installation surface, the scraper knife 237 is obliquely arranged, the upper end surface of the scraper knife 237 faces the rotation direction of the main shaft 21, the lowest position of the scraper knife 237 is attached to the inner bottom wall of the crushing cavity, and specifically, an acute angle formed between a tangent line of a contact point of the scraper knife 237 and the grinding surface and the scraper knife 237 is 30-45 degrees. When the main shaft 21 rotates, the scraper knife 237 rotates along with the main shaft 21, and the scraper knife 237 lifts the material when rotating, so that the material moves towards the grinding roller 22 and the grinding, the grinding of the material is facilitated, and the problem that the material is not sufficiently crushed due to the fact that the material is accumulated at the bottom of the crushing cavity is avoided.

The grinding roller 22 is specifically installed in a manner that a plum blossom frame 211 is fixedly connected to the upper end of the main shaft 21, the plum blossom frame 211 is a four-fork plum blossom frame 211, grinding rollers 22 2111 are arranged on branches of the plum blossom frame 211, the grinding rollers 22 are arranged in four groups and are respectively installed on the grinding rollers 22 2111, a limiting ring is arranged at one end, away from the main shaft 21, of each branch of the plum blossom frame 211, and a buffer spring 2112 is arranged between the limiting ring and the grinding roller 22 2111. When the main shaft 21 rotates, the plum blossom frame 211 drives the grinding roller 22 to rotate, the grinding roller 22 may vibrate when rotating, when the grinding roller 22 shakes, the buffer spring 2112 deforms, the buffer spring 2112 generates elastic force when deforming, the elastic force is opposite to the deformation direction and tends to restore the initial state of the buffer spring 2112, and therefore the effects of buffering and shock absorption are achieved.

In order to ensure that the main shaft 21 is kept in a vertical state when the pulverizer is installed, a level gauge 14 is further provided outside the main body 1. When the milling machine is installed, the horizontal state of the milling machine is kept when the milling machine is installed by observing the level gauge 14, the centrifugal force generated when the main shaft 21 rotates caused by the inclination of the milling machine is reduced, and then the main machine body 1 is caused to shake to cause poor grinding effect or even cause safety accidents.

Further, the two sides of the main body 1 are provided with shock absorbing parts 13, the shock absorbing parts 13 are selected from springs, one end of each spring is fixedly connected with the outer wall of the main body 1, and the other end of each spring is fixedly connected with a plane on which the main body 1 is installed. Through setting up damper 13, when the host computer body 1 takes place to rock, damper 13 takes place to deform, and damper 13 produces elasticity when deforming, and this elasticity is opposite with the direction of deformation and trend damper 13 resumes initial condition to play the absorbing effect of buffering.

In order to reduce the metal mixing in the material grinding process, a magnetic impurity removing piece 111 for removing the metal in the material is further arranged at the feed port 11. The magnetic impurity removing piece 111 can be selected from an electromagnet for removing impurities and can also be selected from a permanent magnet for removing impurities, preferably the electromagnet, the existence of the magnetism of the electromagnet can be controlled by controlling the on-off of current, and the magnetism of the electromagnet can be controlled by controlling the magnitude of the current, so that the control is convenient; when metal objects are mixed in the material, the main machine is loud in sound and can vibrate when the material is crushed, even the grinding roller 22 is damaged, and the metal objects in the material are removed by arranging the magnetic impurity removing piece 111, so that the problem is reduced.

The implementation principle of the embodiment is as follows:

when using this milling machine, the material passes through feed inlet 11 and gets into broken chamber, driving piece drive main shaft 21 is rotatory, main shaft 21 is rotatory to drive grinding roller 22 and rotates, then rotatory with the abrasive surface laminating through grinding roller 22, laminating department through grinding roller 22 and abrasive surface grinds the material, scraper 236 is rotatory under main shaft 21's drive, scrape the dirt through scraper 236 to the abrasive surface and handle, thereby make the powder after the grinding easily not glue in the abrasive surface of milling machine, and then the effect that is difficult for influencing the grinding, the time of extension grinding.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A milling machine for preparing calcium carbonate powder is characterized in that: the grinding machine comprises a main machine body (1), wherein a crushing cavity is arranged in the main machine body (1), a feeding hole (11) and a discharging hole (12) are formed in the main machine body (1), a grinding assembly (2) is arranged in the main machine body (1), and the grinding assembly (2) comprises a main shaft (21), a plurality of grinding rollers (22) and a driving piece for driving the main shaft (21) to rotate; the grinding rollers (22) are arranged on the main shaft (21) and distributed at intervals; the position, attached to the grinding roller (22), in the main machine body (1) is a grinding surface, and a scraper (236) attached to the grinding surface is mounted on the main shaft (21);

an installation frame (23) is fixedly connected to the main shaft (21), the installation frame (23) is horizontally arranged, the scraper (236) is installed on the installation frame (23), a sliding ball (2321) is arranged at one end, far away from the main shaft (21), of the installation frame (23), a sliding groove (15) is formed in the inner side wall of the main machine body (1), and the sliding ball (2321) is clamped and embedded in the sliding groove (15);

the mounting rack (23) comprises an outer pipe (231) and an inner pipe (232), the outer pipe (231) is in sliding connection with the inner pipe (232), the outer pipe (231) is fixedly connected with the main shaft (21), the inner pipe (232) is fixedly connected with the sliding ball (2321), a limiting plate (2311) is arranged on the outer pipe (231), and a damping spring (233) is arranged between the limiting plate (2311) and the sliding ball (2321).

2. A mill for producing calcium carbonate powder according to claim 1, characterized in that: be provided with mounting panel (234) on mounting bracket (23), scraper (236) set up in mounting panel (234) is kept away from the one end of mounting bracket (23), scraper (236) with be provided with torsional spring (235) between mounting panel (234).

3. A mill for producing calcium carbonate powder according to claim 1, characterized in that: the lower end of the main machine body (1) is communicated with an air blowing channel (31), the air blowing channel (31) is communicated with an air outlet piece (3), and the discharge hole (12) is located right above the air blowing channel (31).

4. A mill for producing calcium carbonate powder according to claim 1, characterized in that: the utility model discloses a crushing chamber, including main shaft (21), scraper knife (237) slope setting, scraper knife (237) up end, the laminating of bottom wall in scraper knife (237) lowest position and the crushing chamber, main shaft (21) lower extreme forms the installation face towards circumference extension, install scraper knife (237) on the installation face, scraper knife (237) slope setting, scraper knife (237) up end towards main shaft (21) direction of rotation, scraper knife (237) lowest position and.

5. A mill for producing calcium carbonate powder according to claim 1, characterized in that: spindle (21) upper end fixedly connected with plum blossom frame (211), plum blossom frame (211) is four fork plum blossom frame (211), be provided with grinding roller frame (2111) on the branching of plum blossom frame (211), grinding roller (22) set up to four groups and install respectively in on grinding roller frame (2111), the branching of plum blossom frame (211) is kept away from the one end of spindle (21) is provided with the spacing ring, the spacing ring with be provided with buffer spring (2112) between grinding roller frame (2111).

6. A mill for producing calcium carbonate powder according to claim 1, characterized in that: a level meter (14) is arranged outside the main machine body (1).

7. A mill for producing calcium carbonate powder according to claim 6, characterized in that: shock absorbing parts (13) are arranged on two sides of the main machine body (1).

8. A mill for producing calcium carbonate powder according to claim 1, characterized in that: and a magnetic impurity removing piece (111) for removing metal substances in the material is arranged at the feed port (11).