CN113798002B

CN113798002B - Grinding and cleaning workstation for coal samples

Info

Publication number: CN113798002B
Application number: CN202110977386.1A
Authority: CN
Inventors: 薛峰; 代佩; 黄海峰; 王宇; 欧战备; 张伟
Original assignee: Huaibei Mining Co ltd Coal Transportation And Marketing Branch; Wobei Coal Preparation Plant Of Huaibei Mining Co ltd
Current assignee: Huaibei Mining Co ltd Coal Transportation And Marketing Branch; Wobei Coal Preparation Plant Of Huaibei Mining Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-06-07
Anticipated expiration: 2041-08-24
Also published as: CN113798002A

Abstract

The invention discloses a grinding and cleaning workstation for a coal sample, which relates to the technical field of coal sample grinding and comprises a box body and a rack, wherein a first motor is fixed on the inner wall of the bottom of the box body through a bolt, a first bevel gear is fixed at the output end of the first motor through spot welding, the inner wall of the bottom of the box body is movably connected with a movable column through a bearing, a second bevel gear is sleeved on the movable column, the first bevel gear is meshed with the second bevel gear, and the inner wall of the bottom of the box body is symmetrically and movably connected with a first threaded rod through the bearing; according to the coal grinding device, the coal placed in the material placing box is lifted to the material placing opening through the placing plate, potential energy is given to the coal, the coal falls by means of self gravity, meanwhile, the coal is ground in the falling process, manual material placing is not needed in the whole device, the automation degree is high, and the problem that the whole working efficiency of the coal grinding device is reduced due to manual operation is avoided.

Description

Grinding and cleaning workstation for coal samples

Technical Field

The invention relates to the technical field of coal, in particular to a grinding and cleaning workstation for a coal sample.

Background

China is the largest coal producing country and consuming country in the world, coal plays an important role in national economic development as energy, coal quality control for guaranteeing fairness and avoiding human factor interference is always a problem which is focused and urgently needed to solve in industries such as coal and downstream metallurgy, electric power, building materials, chemical industry and the like.

At present, the quality detection of coal is one of important links of operation management and control of coal enterprises, and the problems of low automation degree, large influence of human interference factors, inaccurate quality inspection and the like exist for a long time, and in the process of detecting the quality of coal, large blocks of coal need to be ground into smaller particles for detecting the quality of the coal in different areas;

for example, in the coal grinding device mentioned in the patent 201910938071, the pressing cylinder drives the grinding block to grind coal, and the rotating motor drives the grinding block to rotate to grind coal finely, when the device is used for grinding coal, the grinding efficiency of the coal is high, the receiving speed is high, but when the coal is extruded and collided by the grinding block, the coal is easy to splash due to the irregularity of the coal shape, and the cleaning device is not installed in the grinding device, so that the splashed coal block is easy to block parts in the grinding device, and the parts are damaged due to abrasion.

To this end, we propose an abrasive cleaning station for coal samples.

Disclosure of Invention

The invention aims to provide a grinding and cleaning workstation for a coal sample, which aims to solve the problems that the grinding efficiency of a coal grinding device is low, the automation degree of the coal grinding device is low, and coal is not cleaned in a splashing way when the coal grinding device grinds the coal.

In order to achieve the purpose, the invention provides the following technical scheme:

a grinding and cleaning workstation for a coal sample comprises a box body and a rack, wherein a first motor is fixed on the inner wall of the bottom of the box body through a bolt, a first bevel gear is fixed at the output end of the first motor through spot welding, the inner wall of the bottom of the box body is movably connected with a movable column through a bearing, a second bevel gear is sleeved on the movable column, the first bevel gear is meshed with the second bevel gear, the inner wall of the bottom of the box body is symmetrically and movably connected with a first threaded rod through the bearing, a second cylindrical gear is sleeved on the first threaded rod, a first cylindrical gear is sleeved on the movable column, and the first cylindrical gear is connected with the second cylindrical gear through the rack;

a first transverse plate is installed in the box body, a second transverse plate is installed at the top of the first transverse plate, one end of the movable column penetrates through the bottom of the first transverse plate and is movably connected with the bottom of the second transverse plate through a bearing, a third cylindrical gear is sleeved on the movable column and on the opposite surface of the first transverse plate and the second transverse plate, a second threaded rod is symmetrically and movably connected with the top of the first transverse plate through the bearing, a fourth cylindrical gear is sleeved on the second threaded rod, the third cylindrical gear is meshed with the fourth cylindrical gear, and one end of the second threaded rod penetrates through the bottom of the second transverse plate and is movably connected with the second transverse plate through the bearing;

the second transverse plate is provided with a fine grinding assembly, the fine grinding assembly comprises a first shell, a movable plate, a fixed plate, a cylindrical rotating block, a column connecting block, a migration block, a rotating column, a connecting sliding column, a metal column, a grinding vessel, a first telescopic film, an ash outlet, a connecting rod, a grinding ball, a material sucking hole, a second telescopic film, a first cylindrical hole, a second cylindrical hole and a third cylindrical hole, the second threaded rod is provided with the movable plate and the fixed plate, the movable plate is rotatably connected with the second threaded rod, the fixed plate is movably connected with the second threaded rod, the fixed plate and the movable plate are correspondingly provided with the first cylindrical hole, the second cylindrical hole and the third cylindrical hole, the cylindrical rotating block is positioned in the third cylindrical hole and is connected with the cylindrical rotating block in a sliding manner, the rotating columns are uniformly arranged on the cylindrical rotating block, the movable plate is correspondingly connected with the column connecting block, and the bottom of the fixed plate is provided with the migration block correspondingly to the column connecting block, the utility model discloses a portable electronic device, including fixed plate, cylinder commentaries on classics piece, first casing, first flexible membrane, fixed plate, fly leaf, connecting rod, fixed plate, second diaphragm, fixed plate and fly leaf, the fixed plate just is located the downthehole connection traveller of installing of second cylinder on with the fly leaf, the top of cylinder commentaries on classics piece is fixed with the metal column through spot welding, the one end of metal column and the bottom of running through first casing are installed and are ground the ware, the bottom of grinding the ware is fixed with first flexible membrane through the adhesion symmetry, and the other end of first flexible membrane is fixed with the bottom inner wall of first casing through the adhesion mutually, the ash hole has been seted up to the both ends symmetry of first casing, the connecting rod is installed to the top inner wall of first casing, and the bottom that is located the connecting rod is fixed with the grinding ball through spot welding, the material hole has been seted up to the bottom of grinding ball, the flexible membrane of second is installed to the bottom bilateral symmetry of first casing, and the other end and the second diaphragm top of second are fixed mutually.

Further, the top symmetry of first diaphragm is installed and is raised the subassembly, it includes riser, first bumping post, leads to groove, slider, second bumping post, spliced pole, cylinder cover, supports piece, standing groove, spring, dog and spout to raise the subassembly, logical groove has been seted up on the riser, and is located logical inslot sliding connection and has the slider, first bumping post is installed to a side symmetry of riser, the spliced pole is installed to one side of slider, and has the cylinder cover through bearing swing joint on the spliced pole, just be located the bottom of spliced pole on the slider and install and support the piece, and be located and to open the standing groove in the piece, install the dog in the standing groove, and support the spout sliding connection who offers on piece and the dog, install the spring in the standing groove, and the one end of spring passes through spot welding and dog bottom fixed connection.

Further, two install the blowing subassembly on the cylinder cover, the blowing subassembly is including placing board, draw-in groove, first electric putter, splint, bevel connection and blowing box, place the board on the symmetry install first electric putter, and the one end that is located first electric putter is fixed with splint through spot welding, the bilateral symmetry of placing the board has seted up the draw-in groove, the top of placing the board just corresponds with the both sides of splint and has seted up the bevel connection, two the blowing box is installed to the opposite side of splint.

Further, a rough grinding assembly is installed at the top of the first shell and comprises a second shell, a discharging channel, a protective cover, a rotating shaft, a third conical gear, a second motor, a fourth conical gear, a grinding column, a conical sliding plate and a discharging hole, the discharging channel is formed in the second shell, the protective cover is installed on the inner wall of the bottom of the second shell and located in the discharging channel, the second motor is installed on the inner wall of one side of the second shell, the rotating shaft is movably connected with the inner wall of the bottom of the second shell and located in the protective cover through a bearing, the third conical gear is sleeved on the rotating shaft, the fourth conical gear is fixed to one side, penetrating through the protective cover, of the output end of the second motor, the third conical gear is connected with the fourth conical gear in a meshed mode, one end of the rotating shaft penetrates through the top of the protective cover and is fixed with the conical sliding plate through spot welding, and the grinding column is arranged on the rotating shaft and positioned on the opposite surface of the conical sliding plate and the protective cover, and the top of the second shell is provided with a discharge hole corresponding to the discharge channel.

Furthermore, the discharging channel is communicated with the top of the first shell, the diameter of the discharging channel is smaller than the diameter of the opening of the grinding dish, one side of the first shell is communicated with a discharging pipe, and one end of the discharging pipe is connected with a material sucking port in the grinding ball.

Further, the inner walls of the two sides of the box body and the side walls of the first telescopic column are symmetrically provided with cleaning components on the second transverse plate, each cleaning component comprises a second electric push rod, a first telescopic column, a second telescopic column, a third telescopic column, a limiting block, a first connecting plate, a second connecting plate, a third connecting plate, a folding rod and a brush, the second telescopic column is arranged in the third telescopic column and is in sliding connection with the third telescopic column, the limiting blocks are symmetrically arranged at one end of the second telescopic column and in the third telescopic column, the limiting blocks are symmetrically arranged at the side walls of the second telescopic column and outside the third telescopic column, the first telescopic column is arranged in the second telescopic column and is in sliding connection with the second telescopic column, the limiting blocks are symmetrically arranged at the side walls of the first telescopic column in the second telescopic column, the limiting blocks are symmetrically arranged at the side walls of the first telescopic column outside the second telescopic column, the one end that the flexible post of third and the flexible post of second is run through respectively to second electric putter's one end is fixed mutually with first flexible post through spot welding, first connecting plate, second connecting plate and third connecting plate are installed to the top correspondence of first flexible post, the flexible post of second and the flexible post of third, the folding rod is installed with one side of second connecting plate to first connecting plate, and the folding rod is installed with one side of third connecting plate to the second connecting plate, evenly install the brush on first connecting plate, second connecting plate and the third connecting plate.

Further, install the baffle on the second diaphragm, and the highly distance that is greater than drain hole to second diaphragm of baffle, chute is seted up to the bottom symmetry that just is located second electric putter on the second diaphragm, external bin outlet has just been seted up with the one end correspondence of chute to the both sides of box, waste material box is installed to the both sides of box and the bottom that is located external bin outlet.

Further, threaded sleeves are symmetrically installed on the first threaded rod, one side of each threaded sleeve is fixed with the corresponding sliding block through spot welding, ash leakage holes are symmetrically formed in one side, located on the second transverse plate, of the second telescopic film, and ash placing boxes are symmetrically installed at the bottom, located on the first transverse plate, of the ash leakage holes.

Compared with the prior art, the invention has the beneficial effects that:

1. the blowing mouth department will be raised to the coal of placing in the blowing box through placing the board earlier, gives the coal potential energy for coal relies on self gravity whereabouts, and coal grinds at the in-process of whereabouts simultaneously, and the integrated device does not need artifical manual blowing, and degree of automation is high, has avoided manual operation to reduce coal grinder's whole work efficiency.

2. The coal falling from the discharge port is ground through the rough grinding component and the fine grinding component, and the large-particle coal blocks are ground into small-particle coal through the primary grinding of the grinding column, so that the large-particle coal is prevented from directly falling into the grinding vessel, and the large-particle coal is easy to jump and fly through the collision and grinding between the grinding vessel and the grinding ball, so that the work of cleaning the components in the coal grinding device in the later stage is aggravated, meanwhile, the quality of a coal sample needing to be detected is reduced, and the detection of the subsequent coal is influenced; through the careful grinding of grinding ball and grinding vessel, the grinding effect of small granule coal sample is better, and the coal granule that is less than 0.2mm directly draws the coal granule through the row who sets up on the external pump washing device from the grinding ball in the row material pipe suction for grinder's whole work efficiency is faster.

3. At last, through the cleaning assembly installed on the box body, the coal fragments with smaller particles flying out of the grinding dish are cleaned, the ash placing box and the waste material box installed on the box body are used for collecting the coal particles, the coal grinding device is prevented from being used for a long time, a large amount of coal fragments are left in the box body, the work of some mechanical elements is influenced, and the parts are abraded and damaged.

Drawings

FIG. 1 is a schematic structural view of a coal grinding apparatus box of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the coal grinding apparatus of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A of the present invention;

FIG. 4 is a schematic diagram of the overall structure of the rough grinding assembly of the present invention;

FIG. 5 is an exploded view of the finishing assembly of the present invention;

FIG. 6 is a schematic top view of the cleaning assembly of the present invention;

FIG. 7 is a schematic front sectional view of a cleaning assembly of the present invention;

FIG. 8 is a schematic view of the overall configuration of the lift assembly of the present invention;

FIG. 9 is a cross-sectional view of the connecting strut of the present invention;

FIG. 10 is a schematic view of a cylindrical sleeve structure according to the present invention;

FIG. 11 is a schematic view of the structure of the components on the mounting board according to the present invention;

fig. 12 is a schematic structural view of the discharging box of the present invention.

In the figure: 1. a box body; 2. a first motor; 3. a first bevel gear; 4. a movable post; 5. a second bevel gear; 6. a first cylindrical gear; 7. a first threaded rod; 8. a second cylindrical gear; 9. a rack; 10. a first transverse plate; 11. a raising assembly; 1101. a vertical plate; 1102. a first bumping post; 1103. a through groove; 1104. a slider; 1105. a second bumping post; 1106. connecting columns; 1107. a cylindrical sleeve; 1108. a resisting block; 1109. a placement groove; 1110. a spring; 1111. a stopper; 1112. a chute; 12. a discharging component; 1201. placing the plate; 1202. a card slot; 1203. a first electric push rod; 1204. a splint; 1205. a bevel opening; 1206. placing a material box; 13. a threaded sleeve; 14. a third cylindrical gear; 15. a second threaded rod; 16. a fourth cylindrical gear; 17. a second transverse plate; 18. ash leakage holes; 19. placing an ash box; 20. a finish grinding assembly; 2001. a first housing; 2002. a movable plate; 2003. a fixing plate; 2004. a cylindrical rotating block; 2005. connecting a column block; 2006. a migration block; 2007. turning the column; 2008. connecting a sliding column; 2009. a metal post; 2010. grinding a dish; 2011. a first stretch film; 2012. an ash outlet; 2013. a connecting rod; 2014. grinding balls; 2015. a suction hole; 2016. a second stretch film; 2017. a first cylindrical bore; 2018. a second cylindrical bore; 2019. a third cylindrical bore; 21. a discharge pipe; 22. a partition plate; 23. a coarse grinding assembly; 2301. a second housing; 2302. a material placing channel; 2303. a protective cover; 2304. a rotating shaft; 2305. a third bevel gear; 2306. a second motor; 2307. a fourth bevel gear; 2308. grinding the column; 2309. a conical sliding plate; 2310. a discharging port; 24. a sweeping assembly; 2401. a second electric push rod; 2402. a first telescopic column; 2403. a second telescopic column; 2404. a third telescopic column; 2405. a limiting block; 2406. a first connecting plate; 2407. a second connecting plate; 2408. a third connecting plate; 2409. a folding bar; 2410. a brush; 25. a chute; 26. a waste bin; 27. an external discharge port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-12, the present invention provides a technical solution:

example 1:

as shown in fig. 2 and fig. 8-12, the grinding and cleaning workstation for coal samples is provided in the present invention, wherein the coal samples are placed in the placing box 1206 in advance, the placing box 1206 is different from a traditional sample placing cup, and is placed by using a special position of the placing plate 1201 with an opening at one side, so that the coal in the placing box 1206 does not overflow, and meanwhile, in the circulating motion of the placing plate 1201, the coal fragments remained in the placing box 1206 are automatically treated without additionally using a cleaning device, which is more convenient;

the placing plate 1201 in the placing component 12 plays a role in lifting a coal sample in the placing box 1206, the grinding effect of the coal sample in the falling process is better by utilizing the gravity of the coal sample, in the concrete implementation, the threaded sleeve 13 connected in the through groove 1103 by the sliding block 1104 moves on the first threaded rod 7, when the threaded sleeve 13 moves to the bottom of the vertical plate 1101, the first blocking column 1102 plays a side blocking effect on the cylindrical sleeve 1107 mounted on the connecting column 1106 and the placing plate 1201 on the cylindrical sleeve 1107, meanwhile, the cylindrical sleeve 1107 adopts a shape structure with one convex side, when the cylindrical sleeve 1107 rotates on the connecting column 1106, the convex side of the cylindrical sleeve 1107 abuts against the stop 1111 in the sliding groove 1112 on the abutting block 1108, the stop 1111 compresses the spring 1110 in the placing groove 1109, the placing plate 1201 on the cylindrical sleeve 1107 plays a shaping role, and when the placing plate 1201 moves upwards with the placing box 1206, the coal samples in the placing box 1206 fall due to instability of the placing plate 1201, when the thread sleeve 13 rises, the placing box 1206 on the placing plate 1201 is in a state of being low in the front and high in the rear, when the placing plate 1201 meets the first retaining column 1102 at the top of the vertical plate 1101, the placing plate 1201 is in a state of being low in the front and high in the rear, one side of the placing plate 1201 which is high in the rear is firstly contacted with the first retaining column 1102, the other side of the placing plate 1201 is contacted with the second retaining column 1105, the placing plate 1201 is changed from a state of being low in the front and high in the rear to a state of being high in the front and low in the rear, the clamping groove 1202 on the placing plate 1201 is correspondingly clamped with the cylindrical sleeve 1107, the first electric push rod 1203 drives the clamping plate 1204 to tightly support the placing box, and when the placing plate 1201 moves to a position flush with the discharging port 2310, the coal samples in the placing plate 1206 are poured into the discharging port 2310 from the inclined port 1205 due to being high in the front and low in the rear of the placing plate 1201;

because this device adopts first motor 2 to give the power of placing board 1201 and rising the decline, and follow-up when raising subassembly 11 and other spare parts work again, place board 1201 and reciprocate on first threaded rod 7, can not exert an influence to other spare parts, first motor 2 drives first conical gear 3, second conical gear 5, rack 9, first cylindrical gear 6 and second cylindrical gear 8 and rotates, realizes the maximize energy conversion through the work of first motor 2.

Example 2:

in the coal grinding operation of the present invention, as shown in fig. 2-5, when the coal sample in the discharging box 1206 is poured into the discharging opening 2310, the coal sample starts to enter the operation range of the rough grinding assembly 23, the second motor 2306 starts to operate to transmit power to the grinding column 2308, the second motor 2306 is installed on the side wall inside the second housing 2301, and a dust cover is installed to prevent the coal sample from blocking the rotation position of the second motor 2306 during the falling process, at the same time, the third bevel gear 2305, the fourth bevel gear 2307 and the rotating shaft 2304 are all covered by the protective cover 2303 to prevent the coal from falling, the tapered slip plate 2309 installed on the rotating shaft 2304 throws the coal sample falling from the discharging opening 2310 to both sides of the second housing 2301, the grinding effect by the grinding column 2308 is better, the grinding gap between the grinding column 2308 and the second housing 2301 is designed to be large and small, the grinding of the coal sample with larger particles is facilitated, the ground coal sample falls onto the grinding dish 2010 in the first shell 2001 from the bottom of the material discharge channel 2302, and the coal sample starts to enter the working range of the fine grinding assembly 20;

in the concrete implementation, the rotating column 2007 arranged on the cylindrical rotating block 2004 and the connecting column block 2005 arranged on the movable plate 2002 are arranged at intervals, the transfer block 2006 arranged at the bottom of the fixed plate 2003 abuts against one side of the rotating column 2007 in the process that the connecting column block 2005 drives the rotating column 2007 to ascend, the transfer block 2006 is made of rubber, when the transfer block 2005 collides with the connecting column block, the rubber material is soft, the transfer block 2006 cannot be damaged, the transfer block 2006 moves the rotating column 2007 on the connecting column block 2005 for a certain distance, the metal column 2009 on the cylindrical rotating block 2004 and the grinding vessel 2010 on the metal column 2009 rotate for a section in the rising process, and in the rising process of the grinding vessel 2010, the coal sample in the grinding vessel 2010 collides with the bottom of the grinding ball 2014 and the grinding vessel 2010 and the grinding ball 2014 rotate and grind at the same time, so that the grinding effect is better;

the grinding ball 2014 is fixed on the top of the first shell 2001 through the connecting rod 2013, meanwhile, the grinding ball 2014 is provided with a material sucking hole 2015, when the grinding ball 2014 grinds the grinding dish 2010 and a coal sample reaches 0.2mm particles, the coal sample can directly enter a collecting cup through a material sucking device connected with the outside through a discharge pipe 21, and when the grinding device does not work, dry low-temperature gas can be introduced into the first shell 2001 through the discharge pipe 21, so that the temperature rise in the grinding process of the grinding ball 2014 is small, and the sample preparation efficiency is high;

first flexible membrane 2011 that is located the installation of the bottom of grinding vessel 2010 and first casing 2001 blows the broken coal cinder in first casing 2001 at the ascending in-process that descends of grinding vessel 2010, blow out the broken coal cinder from ash outlet 2012, the rethread clearance subassembly discharges the piece of coal, install flexible membrane 2016 of second on first casing 2001 and the second diaphragm 17, flexible membrane 2016 of second is isolated with the piece of coal that ash outlet 2012 discharged and second threaded rod 15, prevent that the piece of coal from influencing second threaded rod 15 and rotating.

Example 3:

as shown in fig. 6 and 7, the cleaning assembly 24 installed in the coal grinding apparatus uniformly cleans the coal fragments scattered from the casing 1, while the partition plate 22 is installed on the second horizontal plate 17 to prevent the coal fragments from falling onto the first horizontal plate 10, when the coal fragments are generated on the second horizontal plate 17, the second electric push rods 2401 located on the inner walls of the two sides of the casing 1 start to work to push the first telescopic column 2402, the first telescopic column 2402 drives the second telescopic column 2403 and the third telescopic column 2404 to extend, the distance between the first connecting plate 2406, the second connecting plate 2407 and the third connecting plate 2408 installed on the first telescopic column 2402, the second telescopic column 2403 and the third telescopic column 2404 starts to increase under the limitation of the folding rod 2409, and the stopper 2405 plays a role in limiting the first telescopic column 2402 and the second telescopic column 2403 to prevent the first telescopic column 2402 and the second telescopic column 2403 from shelling, the cleaning effect is better, the brushes 2410 on the first connecting plate 2406, the second connecting plate 2407 and the third connecting plate 2408 clean the coal scraps on the second transverse plate 17, the coal scraps fall into the ash leakage holes 18 through the cleaning of the brushes 2410 and then fall into the ash discharge box 19 through the ash leakage holes 18, the coal scraps on the other side fall into the external discharge opening 27 from the chute 25 and then fall into the waste material box 26 through the external discharge opening 27, and finally the coal scraps in the ash discharge box 19 and the waste material box 26 are uniformly treated.

The working process of the invention is as follows:

when the emptying box 1206 is put into the box body 1, the sliding block 1104 on the vertical plate 1101 moves to the bottom of the vertical plate 1101, one side of the placing plate 1201 on the cylindrical sleeve 1107 contacts the first blocking column 1102 at the moment, the other side of the placing plate 1201 contacts the second blocking column 1105, so that a convex block on the cylindrical sleeve 1107 abuts against the blocking block 1111, and the blocking block 1111 is stressed to compress the spring 1110, so that the placing plate 1201 keeps a state that the front part is low and the back part is high as a whole;

at this time, the opening of the placing box 1206 containing the coal sample is placed on the tilted side of the placing plate 1201 in the box body 1 by an external mechanical arm, at this time, the first electric push rod 1203 works to push the clamping plate 1204 to clamp the placing box 1206, because the placing plate 1201 is in a state of low front and high back, the coal sample in the placing box 1206 does not roll out, at this time, the first motor 2 in the box body 1 works to drive the first bevel gear 3 to rotate, the first bevel gear 3 drives the movable column 4 and the first cylindrical gear 6 to rotate, the first cylindrical gear 6 drives the first threaded rod 7 and the second cylindrical gear 8 to rotate through the rack 9, at this time, the threaded sleeve 13 on the first threaded rod 7 drives the sliding block 1104 to move upwards, the sliding block 1104 drives the placing plate 1201 with low front and high back to move upwards, when the placing plate moves to the first blocking column 1102 on the vertical plate 1101, because the placing plate 1201 is low front and high back, the rear side of the placing plate 1201 is firstly contacted with the first blocking column 1102, so that the placing plate 1201 is changed from a state of being low in front and high in back to a state of being high in front and low in back, at the moment, a coal sample in the discharging box 1206 on the placing plate 1201 rolls out from the outlet of the discharging box 1206 and falls into the discharging port 2310, a second motor 2306 arranged on the inner wall of the second shell 2301 starts to work, through the rotation of the second motor 2306, a fourth conical gear 2307 and a third conical gear 2305 start to rotate, a rotating shaft 2304 rotates to drive a grinding column 2308 and a conical sliding plate 2309 to rotate, the conical sliding plate 2309 throws the coal falling into the discharging channel 2302 into a gap between the grinding column 2308 and the second shell 2301, and the larger coal is crushed and reduced through the rotation grinding of the grinding column 2308 and falls into a grinding vessel 2010 from the discharging channel 2302 to be finely ground;

the movable column 4 at the bottom of the box body 1 rotates to drive the third cylindrical gear 14 to rotate, the third cylindrical gear 14 drives the second threaded rod 15 and the fourth cylindrical gear 16 around to rotate, the movable plate 2002 on the second threaded rod 15 moves upwards, the column connecting block 2005 on the movable plate 2002 lifts the cylindrical rotating block 2004 in the third cylindrical hole 2019, when the rotating column 2007 on the cylindrical rotating block 2004 contacts with the transfer block 2006, the rotating column 2007 on the column connecting block 2005 is abutted by the transfer block 2006, the cylindrical rotating block 2004 rotates, the fixing plate 2003 on the second threaded rod 15 remains still, when the first motor 2 at the bottom rotates reversely, the above parts are operated in a reverse direction to and fro circularly, the grinding dish 2010 on the cylindrical rotating block 2004 also rotates in the rising process, at this time, the fine coal sample in the grinding dish 2010 rises in the grinding dish 2010 and collides with the grinding ball 2014 to rotate, the coal sample in the grinding dish 2010 becomes finer and the particles become smaller, and after grinding for a certain time, an external material sucking device is opened, and the small-particle coal sample is directly dropped from the discharge pipe 21 to a collecting cup through a material sucking hole 2015 on the grinding ball 2014;

when the coal scraps jumping over the second transverse plate 17 need to be cleaned, the second electric push rod 2401 is opened, the second electric push rod 2401 pushes the first telescopic column 2402 to extend, the first telescopic column 2402 drives the second telescopic column 2403, the second telescopic column 2403 drives the third telescopic column 2404 to extend, the first connecting plate 2406, the second connecting plate 2407 and the third connecting plate 2408 on the first telescopic column 2402, the second telescopic column 2403 and the third telescopic column 2404 are shifted, so that the folding rods 2409 between the first connecting plates 2406 and the second connecting plates 2407 are extended, the folding rods 2409 between the second connecting plates 2407 and the third connecting plates 2408 are extended, the brushes 2410 on the first connecting plates 2406, the second connecting plates 2407 and the third connecting plates 2408 clean the coal scraps on the second transverse plate 17 to the ash leakage holes 18 and the chutes 25, and finally the coal scraps fall into the ash discharge box 19 and the waste material box 26 for uniform treatment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A grinding and cleaning workstation for coal samples comprises a box body (1) and a rack (9), and is characterized in that: the automatic transmission device is characterized in that a first motor (2) is fixed on the inner wall of the bottom of the box body (1) through a bolt, a first bevel gear (3) is fixed at the output end of the first motor (2) through spot welding, the inner wall of the bottom of the box body (1) is movably connected with a movable column (4) through a bearing, a second bevel gear (5) is sleeved on the movable column (4), the first bevel gear (3) is meshed with the second bevel gear (5), the inner wall of the bottom of the box body (1) is symmetrically and movably connected with a first threaded rod (7) through a bearing, a second cylindrical gear (8) is sleeved on the first threaded rod (7), a first cylindrical gear (6) is sleeved on the movable column (4), and the first cylindrical gear (6) is connected with the second cylindrical gear (8) through a rack (9);

a first transverse plate (10) is arranged in the box body (1), a second transverse plate (17) is arranged at the top of the first transverse plate (10), one end of the movable column (4) penetrates through the bottom of the first transverse plate (10) and is movably connected with the bottom of the second transverse plate (17) through a bearing, a third cylindrical gear (14) is sleeved on the opposite surface of the first transverse plate (10) and the second transverse plate (17) and is positioned on the movable column (4), the top of the first transverse plate (10) is symmetrically and movably connected with a second threaded rod (15) through a bearing, a fourth cylindrical gear (16) is sleeved on the second threaded rod (15), the third cylindrical gear (14) is meshed with the fourth cylindrical gear (16), one end of the second threaded rod (15) penetrates through the bottom of the second transverse plate (17) and is movably connected with the second transverse plate (17) through a bearing;

the fine grinding assembly (20) is mounted on the second transverse plate (17), the fine grinding assembly (20) comprises a first shell (2001), a movable plate (2002), a fixed plate (2003), a cylindrical rotating block (2004), a connecting column block (2005), a transfer block (2006), a rotating column (2007), a connecting sliding column (2008), a metal column (2009), a grinding dish (2010), a first telescopic film (2011), an ash outlet (2012), a connecting rod (2013), a grinding ball (2014), a material suction hole (2015), a second telescopic film (2016), a first cylindrical hole (2017), a second cylindrical hole (2018) and a third cylindrical hole (2019), the movable plate (2002) and the fixed plate (2003) are mounted on the second threaded rod (15), the movable plate (2002) is rotatably connected with the second threaded rod (15), the fixed plate (2003) is movably connected with the second threaded rod (15), the first cylindrical hole (2017) and the movable plate (2002) are correspondingly formed in the fixed plate (2003), A second cylindrical hole (2018) and a third cylindrical hole (2019), a cylindrical rotating block (2004) is slidably connected in the third cylindrical hole (2019), rotating columns (2007) are uniformly installed on the cylindrical rotating block (2004), a column connecting block (2005) is connected on the movable plate (2002) and corresponds to the rotating columns (2007), a migration block (2006) is arranged at the bottom of the fixed plate (2003) and corresponds to the column connecting block (2005), a connecting sliding column (2008) is installed on the fixed plate (2003) and the movable plate (2002) and is located in the second cylindrical hole (2018), a metal column (2009) is fixed at the top of the cylindrical rotating block (2004) through spot welding, a grinding dish (2010) is installed at one end of the metal column (2003) and penetrates through the bottom of the first shell (2001), a first telescopic film (2011) is symmetrically fixed at the bottom of the grinding dish (2010) through adhesion, and the other end of the first telescopic film (2011) is fixed in the bottom of the first shell (2001) through adhesion, ash hole (2012) have been seted up to the both ends symmetry of first casing (2001), connecting rod (2013) are installed to the top inner wall of first casing (2001), and are located the bottom of connecting rod (2013) and are fixed with grinding ball (2014) through spot welding, the bottom of grinding ball (2014) has been seted up and has been inhaled material hole (2015), the flexible membrane of second (2016) is installed to the bottom bilateral symmetry of first casing (2001), and the other end and the second diaphragm (17) top of the flexible membrane of second (2016) are fixed mutually.

2. An abrasive cleaning station for coal samples as claimed in claim 1 wherein: the lifting component (11) is symmetrically installed at the top of the first transverse plate (10), the lifting component (11) comprises a vertical plate (1101), a first blocking column (1102), a through groove (1103), a sliding block (1104), a second blocking column (1105), a connecting column (1106), a cylindrical sleeve (1107), a resisting block (1108), a placing groove (1109), a spring (1110), a stop block (1111) and a sliding groove (1112), the vertical plate (1101) is provided with the through groove (1103), the sliding block (1104) is slidably connected with the through groove (1103), the first blocking column (1102) is symmetrically installed at one side of the vertical plate (1101), the connecting column (1106) is installed at one side of the sliding block (1104), the cylindrical sleeve (1107) is movably connected onto the connecting column (1106) through a bearing, the resisting block (1108) is installed at the bottom of the connecting column (1106) on the sliding block (1104), and the placing groove (1109) is opened in the resisting block (1108), install dog (1111) in standing groove (1109), and support spout (1112) sliding connection who sets up on block (1108) and dog (1111), install spring (1110) in standing groove (1109), and the one end of spring (1110) is through spot welding and dog (1111) bottom fixed connection.

3. An abrasive cleaning station for coal samples as claimed in claim 2 in which: two install blowing subassembly (12) on cylinder cover (1107), blowing subassembly (12) are including placing board (1201), first electric putter (1203), splint (1204) and blowing box (1206), place board (1201) and go up the symmetry and install first electric putter (1203), and the one end that is located first electric putter (1203) is fixed with splint (1204) through spot welding, the bilateral symmetry of placing board (1201) has seted up draw-in groove (1202), place the top of board (1201) and correspond with the both sides of splint (1204) and seted up bevel connection (1205), two the blowing box (1206) are installed to the opposite side of splint (1204).

4. An abrasive cleaning station for coal samples as claimed in claim 1 wherein: the top of the first shell (2001) is provided with a rough grinding assembly (23), the rough grinding assembly (23) comprises a second shell (2301), a protective cover (2303), a rotating shaft (2304), a third bevel gear (2305), a second motor (2306), a fourth bevel gear (2307), grinding columns (2308) and a conical sliding plate (2309), a discharging channel (2302) is formed in the second shell (2301), the inner wall of the bottom of the second shell (2301) is positioned in the discharging channel (2302) and is provided with the protective cover (2303), the inner wall of one side of the second shell (2301) is provided with the second motor (2306), the inner wall of the bottom of the second shell (2301) is movably connected with the rotating shaft (2304) through a bearing, the third bevel gear (2305) is sleeved on the rotating shaft (2304), and the output end of the second motor (2306) penetrates through one side of the protective cover (2303) and is fixedly provided with the fourth bevel gear (2307), third conical gear (2305) and fourth conical gear (2307) meshing connection, the one end of pivot (2304) is run through safety cover (2303) top and is fixed with toper sliding plate (2309) through spot welding, grinding column (2308) are installed to the relative face that just is located toper sliding plate (2309) and safety cover (2303) on pivot (2304), the top of second casing (2301) just corresponds with blowing way (2302) and is provided with drain hole (2310).

5. An abrasive cleaning station for coal samples as claimed in claim 4 in which: the discharging channel (2302) is communicated with the top of the first shell (2001), the diameter of the discharging channel (2302) is smaller than the opening diameter of the grinding dish (2010), one side of the first shell (2001) is communicated with a discharging pipe (21), and one end of the discharging pipe (21) is connected with a suction port in the grinding ball (2014).

6. An abrasive cleaning station for coal samples as claimed in claim 1 wherein: cleaning components (24) are symmetrically mounted on the inner walls of the two sides of the box body (1) and positioned on the second transverse plate (17), each cleaning component (24) comprises a second electric push rod (2401), a first telescopic column (2402), a second telescopic column (2403), a third telescopic column (2404), a limiting block (2405), a first connecting plate (2406), a second connecting plate (2407), a third connecting plate (2408), a folding rod (2409) and a brush (2410), a second telescopic column (2403) is mounted in the third telescopic column (2404), the second telescopic column (2403) and the third telescopic column (2404) are in sliding connection, the limiting blocks (2405) are symmetrically mounted at one end of the second telescopic column (2403) and positioned in the third telescopic column (2404), the limiting blocks (2405) are symmetrically mounted at the outer part of the side wall of the second telescopic column (2403) and positioned in the third telescopic column (2404), and the limiting blocks (2405) are symmetrically mounted in the second telescopic column (2403), and the first telescopic column (2402) and the second telescopic column (2403) are connected in a sliding manner, the side wall of the first telescopic column (2402) in the second telescopic column (2403) is symmetrically provided with limit blocks (2405), the side wall of the first telescopic column (2402) outside the second telescopic column (2403) is symmetrically provided with limit blocks (2405), one end of the second electric push rod (2401) penetrates through the third telescopic column (2404) and the second telescopic column (2403) respectively, one end of the first telescopic column (2402) is fixed with the first telescopic column (2402) through spot welding, the tops of the first telescopic column (2402), the second telescopic column (2403) and the third telescopic column (2404) are correspondingly provided with a first connecting plate (2406), a second connecting plate (2407) and a third connecting plate (2408), the first connecting plate (2406) and one side of the second connecting plate (2407) are provided with a folding rod (2409), and the second connecting plate (2407) and one side of the third connecting plate (2408) are provided with the folding rod (2409), the first connecting plate (2406), the second connecting plate (2407) and the third connecting plate (2408) are uniformly provided with brushes (2410).

7. An abrasive cleaning station for coal samples as claimed in claim 6 in which: install baffle (22) on second diaphragm (17), and the level of baffle (22) is greater than drain hole (2310) to the distance of second diaphragm (17), chute (25) are seted up to the bottom symmetry that just is located second electric putter (2401) on second diaphragm (17), external bin outlet (27) have been seted up just to the both sides of box (1) and correspond with the one end of chute (25), waste material box (26) are installed to the both sides of box (1) and the bottom that is located external bin outlet (27).

8. An abrasive cleaning station for coal samples as claimed in claim 1 wherein: threaded sleeve (13) are installed to the symmetry on first threaded rod (7), and one side of threaded sleeve (13) is fixed mutually through spot welding and slider (1104), ash leakage hole (18) have been seted up to the one side symmetry that just is located flexible membrane (2016) of second on second diaphragm (17), ash discharging box (19) are installed to the bottom symmetry that just is located ash leakage hole (18) on first diaphragm (10).