Coal-crushing device

Abstract

The utility model discloses a kind of coal crushing devices, including the box body being arranged on support frame, the stirring mechanism being arranged on the upper portion of the inside of box body and the grinding mechanism being arranged on the lower portion of the inside of box body, the grinding mechanism includes the rolling pressure assembly being arranged in the box body and the flow guide assembly being connected with rolling pressure assembly;When using, pour into coal carbon in box body, coal carbon is handled into small lump coal by stirring mechanism, coal block falls to flow guide assembly, and coal block is introduced into grinding mechanism by flow guide assembly, coal block is handled into coal cinder after grinding mechanism, and falls out collection.This utility model sets up the coal carbon of stirring mechanism, then the coal block after crushing is introduced into grinding mechanism by flow guide structure and is evenly and orderly ground, and the coal cinder formed after grinding falls out collection, to facilitate sampling use, improve the detection efficiency of coal quality.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, and in particular to a coal crushing device. Background Technology

[0002] To test coal quality, workers take samples. These samples are usually not tested directly; they need to be crushed and screened before being sent to testing equipment. However, some existing equipment, during the crushing process, may not crush some coal pieces to the required size for sampling. Furthermore, in some equipment, the crushing and screening components separate, requiring the coal that fails screening to be returned to the crushing unit for secondary crushing. This undoubtedly increases the time and cost of sampling and testing. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a coal crushing device that can fully crush coal blocks and realize the one-stop completion of crushing and sampling.

[0004] To solve the above-mentioned technical problems, the present invention provides a coal crushing device, including a box mounted on a support frame, a crushing mechanism located on the upper part of the inner side of the box, and a grinding mechanism located on the lower part of the inner side of the box. The grinding mechanism includes a rolling component rotatably mounted inside the box and a flow guiding component connected to the rolling component. In use, coal is poured into the box, and the coal is processed into small coal blocks by the crushing mechanism. The coal blocks fall into the flow guiding component and are guided into the grinding mechanism. After being processed into coal slag by the grinding mechanism, the coal blocks fall out and are collected.

[0005] Using the above structure, a crushing mechanism is set up to perform preliminary crushing of coal. The crushed coal falls into the grinding mechanism at the bottom of the box and is ground into smaller coal slag particles for easy sampling and testing. In this process, in order to avoid the local accumulation of crushed coal lumps, the crushed coal is diverted by a flow guide component before moving to the grinding position to ensure uniform grinding and improve grinding efficiency.

[0006] To simplify the structure and facilitate installation, the crushing mechanism preferably includes a drive shaft passing through the housing and a toothed roller assembly sleeved on the drive shaft and located inside the housing. The protruding end on one side of the drive shaft is connected to a first power motor by a pulley, and the first power motor is fixedly mounted on a support frame.

[0007] To ensure transmission efficiency and improve coal crushing efficiency, preferably, there are two transmission shafts, each with a toothed roller assembly. The toothed roller assembly includes multiple toothed rollers evenly arranged along the axial direction of the transmission shaft, and two toothed rollers at corresponding positions on the two transmission shafts are meshed with each other. Transmission teeth are fitted on both transmission shafts at positions corresponding to the pulleys and the housing, and the two transmission teeth are meshed with each other.

[0008] To facilitate thorough grinding of the pulverized coal, the compaction assembly preferably includes a second power motor mounted on a support frame, a reduction gear connected to the output end of the second power motor, a connecting rod connected to the reduction gear and extending into the housing, and a roller assembly wound around the transmission rod. The roller assembly includes a first roller groove, a second roller groove, and a third roller groove arranged sequentially from top to bottom. The inner sidewall of the housing is provided with a tapered section that is wider at the top and narrower at the bottom corresponding to the three compaction grooves. On the tapered section, a first grinding groove, a second grinding groove, and a third grinding groove are respectively provided at the positions of the three roller grooves from top to bottom. The groove depth of the three grinding grooves gradually decreases from top to bottom. Each roller in each roller groove protrudes from the corresponding roller groove, and the protruding end of each roller extends into the corresponding grinding groove. The wheel surface of the roller extending into the groove is in close contact with the bottom of the corresponding grinding groove.

[0009] To facilitate slowing down the falling speed of coal blocks on the inner sidewall of the box and to facilitate the discharge of ground coal slag, the conical section preferably includes a first transition inclined section connecting the lower part of the opening of the first grinding groove and the upper part of the opening of the second grinding groove, a second transition inclined section connecting the lower part of the opening of the second grinding groove and the upper part of the opening of the third grinding groove, and a third transition inclined section connecting the lower part of the opening of the third grinding groove and the lower end opening of the box. The extension lines of the planes containing the three transition inclined sections are parallel to each other, and the gap between two adjacent extension lines gradually narrows from top to bottom.

[0010] To ensure grinding efficiency, preferably, six first grinding wheels are evenly arranged in the first grinding wheel groove along the circumferential direction, six second grinding wheels are evenly arranged in the second grinding wheel groove along the circumferential direction, and the six first grinding wheels and second grinding wheels are staggered with each other; three third grinding wheels are evenly arranged in the third grinding wheel groove along the circumferential direction.

[0011] To simplify the structure and facilitate installation, preferably, the flow guiding assembly includes a connecting frame sleeved on the extension end of the connecting rod by a bearing, a positioning plate inserted and fixed to the extension end of the connecting rod, and a flow guiding plate screwed and stacked on the upper end of the positioning plate. The connecting frame is located above the first roller groove, and a fixing block extending outward is provided at the edge of the connecting frame. The fixing block is screwed and fixed to the corresponding position of the outer wall of the conical section.

[0012] To facilitate disassembly and assembly and to allow coal blocks to be moved to the grinding position, preferably, the positioning plate is a concave conical structure located above the connecting frame. The concave part of the positioning plate is provided with a guide post, and a guide hole is provided on the end face of the extension end of the connecting rod. The guide post is inserted into the guide hole and fixed by a locking bolt. The diameter of the lower end of the guide plate is smaller than the ring diameter of the corresponding position of the conical section.

[0013] To ensure the uniformity of coal block distribution and avoid local blockage, preferably, at least two baffles are uniformly provided along the circumferential direction on the upper end surface of the guide plate, and each baffle extends along the inclined surface of the conical structure of the positioning plate.

[0014] To facilitate material discharge and simplify the installation structure, preferably, the output end of the second power motor is connected to an active tooth that meshes with the reduction gear. A through hole is provided in the middle of the reduction gear, and a connecting sleeve that fits into the connecting rod is provided in the through hole. At least two support rods that connect to the hole wall of the through hole are provided on the outer side wall of the connecting sleeve. The gap between two adjacent support rods is connected to the lower end outlet of the box.

[0015] Beneficial effects: This utility model sets up a crushing mechanism to crush coal, and then guides the crushed coal blocks into the grinding mechanism in a uniform and orderly manner through a guide structure for grinding. The coal slag formed after grinding falls out and is collected to facilitate sampling and use, thereby improving the efficiency of coal quality testing. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the installation structure of this utility model.

[0018] Figure 3 for Figure 2 The left view.

[0019] Figure 4 This is a diagram showing the usage state of this utility model.

[0020] Figure 5 for Figure 4 Enlarged view of point A in the image.

[0021] Figure 6 This is a schematic diagram of the installation structure of the guide plate and the roller.

[0022] Figure 7 for Figure 6 View B in the diagram. The meanings of the labels in the attached diagram are as follows: Box body-1; Support frame-10; Drive shaft-2; Pulley-20; First power motor-21; Toothed roller-22; Transmission tooth-23; Second power motor - 30; Reduction gear - 31; Drive gear - 310; Connecting sleeve - 311; Support rod (312); Connecting rod - 32; Bearing - 322; Guide hole - 323; First grinding groove - 33; First transition inclined section - 331; Second transition inclined section - 332; Third transition inclined section - 333; Second grinding groove - 34; Third grinding groove - 35; First roller groove -41; First roller -411; Second roller groove -42; Second roller -421; Third roller groove -43; Third roller -431; Connecting frame-5; Positioning plate-50; Guide column-501; Locking bolt-502; Flow deflector-51; Fixing block-52; Partition plate-53. Detailed Implementation

[0023] Depend on Figures 1 to 7 As shown, this utility model includes a box 1 mounted on a support frame 10, a crushing mechanism located on the upper inner side of the box 1, and a grinding mechanism located on the lower inner side of the box 1. The grinding mechanism includes a crushing component rotatably mounted inside the box 1 and a flow guiding component connected to the crushing component. In use, coal is poured into the box 1, and the coal is processed into small coal blocks by the crushing mechanism. The coal blocks fall into the flow guiding component and are guided into the grinding mechanism. After being processed into coal slag by the grinding mechanism, the coal blocks fall out and are collected.

[0024] Specifically, the pulverizing mechanism includes a drive shaft 2 passing through the housing 1 and a toothed roller assembly sleeved on the drive shaft 2 and located inside the housing 1. The end of the drive shaft 2 extending outward is connected to a first power motor 21 by a pulley 20. The first power motor 21 is fixedly mounted on the support frame 10. There are two drive shafts 2, and each drive shaft 2 has a toothed roller assembly. The toothed roller assembly includes a plurality of toothed rollers 22 evenly arranged along the axial direction of the drive shaft 2. Two toothed rollers 22 at corresponding positions on the two drive shafts 2 are meshed with each other. Transmission teeth 23 are sleeved on both drive shafts 2 at positions corresponding to the pulley 20 and the housing 1, and two transmission teeth 23 are meshed with each other.

[0025] The rolling assembly includes a second power motor 30 mounted on a support frame 10, a reduction gear 31 connected to the output end of the second power motor 30, a connecting rod 32 connected to the reduction gear 31 and extending into the housing 1, and a rolling wheel assembly wound around a transmission rod. The rolling wheel assembly includes a first rolling wheel groove 41, a second rolling wheel groove 42, and a third rolling wheel groove 43 arranged sequentially from top to bottom. The inner sidewall of the housing 1 is provided with a tapered section that is wider at the top and narrower at the bottom corresponding to the three rolling grooves. On the tapered section, a first grinding groove 33, a second grinding groove 34, and a third grinding groove 35 are respectively provided at the positions of the three rolling wheel grooves from top to bottom. The groove depth of the three grinding grooves is gradually shallower from top to bottom. The rolling wheel in each rolling wheel groove protrudes from the corresponding rolling wheel groove, and the protruding end of each rolling wheel extends into the corresponding grinding groove. The wheel surface of the wheel end extending into the groove is in contact with the bottom of the corresponding grinding groove.

[0026] It should be noted that the conical segment includes a first transition inclined segment 331 connected between the lower part of the opening of the first grinding groove 33 and the upper part of the opening of the second grinding groove 34, a second transition inclined segment 332 connected between the lower part of the opening of the second grinding groove 34 and the upper part of the opening of the third grinding groove 35, and a third transition inclined segment 333 connected between the lower part of the opening of the third grinding groove 35 and the lower end opening of the housing 1. The extension lines of the planes where the three transition inclined segments are located are parallel to each other, and the gap between two adjacent extension lines gradually narrows from top to bottom.

[0027] In the first grinding wheel groove 41, six first grinding wheels 411 are evenly arranged in the circumferential direction; in the second grinding wheel groove 42, six second grinding wheels 421 are evenly arranged in the circumferential direction; the six first grinding wheels 411 and the two second grinding wheels 421 are staggered with each other; and in the third grinding wheel groove 43, three third grinding wheels 431 are evenly arranged in the circumferential direction.

[0028] In addition, the flow guiding assembly includes a connecting frame 5 sleeved on the extension end of the connecting rod 32 by a bearing 322, a positioning plate 50 inserted and fixed to the extension end of the connecting rod 32, and a flow guiding plate 51 screwed and stacked on the upper end of the positioning plate 50. The connecting frame 5 is located above the first roller groove 41, and a fixing block 52 extending outward is provided at the edge of the connecting frame 5. The fixing block 52 is screwed and fixed to the corresponding position of the outer wall of the conical section.

[0029] The positioning plate 50 is a concave conical structure located above the connecting frame 5. The concave part of the positioning plate 50 is provided with a guide post 501. The end face of the extension end of the connecting rod 32 is provided with a guide hole 323. The guide post 501 is inserted into the guide hole 323 and is fixed by a locking bolt 502. The lower diameter of the guide plate 51 is smaller than the ring diameter of the corresponding position of the conical section.

[0030] At least two baffles 53 are uniformly provided on the upper end surface of the guide plate 51 along the circumferential direction, and each baffle 53 extends along the inclined surface of the conical structure of the positioning plate 50.

[0031] The output end of the second power motor 30 is connected to an active tooth 310 that meshes with the reduction gear 31. A through hole is provided in the middle of the reduction gear 31. A connecting sleeve 311 that is sleeved with the connecting rod 32 is provided in the through hole. At least two support rods 312 that are connected to the hole wall of the through hole are provided on the outer side wall of the connecting sleeve 311. The gap between two adjacent support rods 312 is connected to the lower end outlet of the housing 1.

[0032] The working principle of this utility model is as follows: like Figure 1 As shown, the first power motor 21 and the second power motor 30 are started simultaneously. The transmission shaft 2 drives the toothed roller 22 to rotate. At the same time, the connecting rod 32 also drives the positioning plate 50 to rotate. The coal to be sampled and tested is put into the upper opening of the box 1 and is directly crushed by the meshing of multiple toothed rollers 22 on the two transmission shafts 2. In order to facilitate use and to prevent debris from falling into the box 1, a cover 100 is set on the support frame 10 and wrapped around the outside of the box 1. A feed hole 101 is set on the cover 100 at the position corresponding to the upper opening of the box 1.

[0033] like Figures 2 to 5 As shown, the crushed coal chunks (coarse coal) fall onto the guide plate 51. At this time, the guide plate 51 rotates synchronously with the positioning plate 50. The falling coal chunks bounce on the guide plate 51 and are blocked at the corresponding separation position by the partition plate 53. Under the centrifugal force generated by the rotation of the guide plate 51, they fall out along the inclined surface of the conical structure. Because the diameter of the lower end of the guide plate 51 is smaller than the annular diameter at the corresponding position of the conical section, that is, a gap is left between the wide end of the guide plate 51 and the inner wall of the box 1. During the gap, the coal chunks that fall from the guide plate 51 continue to fall at the gap position and randomly fall into the first grinding trough 33, or randomly fall into the second grinding trough 34 or the third grinding trough 35 along the first transition inclined section 331 and the second transition inclined section 332. They are then crushed into slag (fine coal) by the first grinding wheel 411, the second grinding wheel 421 and the third grinding wheel 431, which rotate synchronously with the connecting rod 32. The crushed coal chunks either fall out of the grinding trough with the rotating grinding wheels or accumulate and overflow in the grinding trough.

[0034] The slag that falls out of the grinding tank finally falls out of the opening at the lower end of the box 1 along the third transition inclined section 333, and falls out and is collected through the gap between two adjacent support rods 312 for sampling.

[0035] Among them, such as Figure 4 and Figure 6As shown, the extension lines of the planes containing the three transition slopes are parallel to each other, and the gap between two adjacent extension lines gradually narrows from top to bottom. This indicates that the two spacings between the three grinding grooves decrease from top to bottom, and the lower end of the groove opening of each grinding groove gradually rises and gradually protrudes from the upper end of the groove opening in the horizontal direction. That is, the lower ends of the groove openings of the three grinding grooves together form a stepped structure, which can effectively prevent the coal blocks falling from the upper end from falling directly out of the box 1 under the action of gravity over the lower grinding groove, so as to achieve the purpose of thorough grinding.

[0036] It should be noted that since there is no material pushing mechanism during the crushing and grinding process, the coal blocks need to be dried during feeding to prevent the crushed coal slag from accumulating and remaining. This makes it easier to crush into slag and prevents repeated crushing from forming stacked residues on the walls of the grinding tank. The dried slag is more easily carried out of the grinding tank with the rotation of the grinding wheel, and can also form a sequential grinding effect from the first grinding tank 33 to the third grinding tank 35.

[0037] In this process, such as Figure 6 and Figure 7 As shown, the six first grinding wheels 411 and the second grinding wheels 421 are staggered with each other, so that the coal blocks that fall from the first grinding trough 33 into the second grinding trough 34 can be immediately ground and processed, reducing the gaps in the coal blocks and thus fully grinding the coal blocks.

Claims

1. A coal crushing device, characterized in that: It includes a box (1) mounted on a support frame (10), a crushing mechanism located on the upper inner side of the box (1), and a grinding mechanism located on the lower inner side of the box (1). The grinding mechanism includes a rolling assembly rotatably mounted inside the box (1) and a flow guiding assembly connected to the rolling assembly. In use, coal is poured into the box (1), and the coal is processed into small coal blocks by the crushing mechanism. The coal blocks fall into the flow guiding assembly and are guided into the grinding mechanism. The coal blocks are processed into coal slag by the grinding mechanism and then fall out for collection.

2. The coal crushing device as described in claim 1, characterized in that: The pulverizing mechanism includes a drive shaft (2) that passes through the housing (1) and a toothed roller assembly that is sleeved on the drive shaft (2) and located inside the housing (1). The end of the drive shaft (2) is connected to a first power motor (21) by a pulley (20). The first power motor (21) is fixedly mounted on the support frame (10).

3. The coal crushing device as described in claim 2, characterized in that: Two drive shafts (2) are provided, and a toothed roller group is provided on each drive shaft (2). The toothed roller group includes multiple toothed rollers (22) evenly arranged along the axial direction of the drive shaft (2). The two toothed rollers (22) at corresponding positions on the two drive shafts (2) are meshed with each other. A drive tooth (23) is sleeved on each of the two drive shafts (2) at the position between the pulley (20) and the housing (1). The two drive teeth (23) are meshed with each other.

4. The coal crushing device as described in claim 1, characterized in that: The compaction assembly includes a second power motor (30) mounted on a support frame (10), a reduction gear (31) connected to the output end of the second power motor (30), a connecting rod (32) connected to the reduction gear (31) and extending into the housing (1), and a roller assembly wound around the transmission rod. The roller assembly includes a first roller groove (41), a second roller groove (42), and a third roller groove (43) arranged sequentially from top to bottom. The inner sidewall of the housing (1) corresponds to the three compaction grooves. The position is set as a conical section that is wider at the top and narrower at the bottom. On the conical section, a first grinding groove (33), a second grinding groove (34) and a third grinding groove (35) are respectively provided at the positions of the three grinding grooves from top to bottom. The depth of the three grinding grooves is gradually set from top to bottom. The grinding wheel in each grinding groove protrudes out of the corresponding grinding groove, and the protruding end of each grinding wheel extends into the corresponding grinding groove. The wheel surface of the wheel end that extends into the groove is in contact with the bottom of the corresponding grinding groove.

5. A coal crushing device as described in claim 4, characterized in that: The conical segment includes a first transition slope (331) connecting the lower part of the opening of the first grinding groove (33) and the upper part of the opening of the second grinding groove (34), a second transition slope (332) connecting the lower part of the opening of the second grinding groove (34) and the upper part of the opening of the third grinding groove (35), and a third transition slope (333) connecting the lower part of the opening of the third grinding groove (35) and the lower opening of the box body (1). The extension lines of the planes where the three transition slopes are located are parallel to each other, and the gap between two adjacent extension lines gradually narrows from top to bottom.

6. A coal crushing device as described in claim 4, characterized in that: Six first grinding wheels (411) are evenly arranged in the first grinding wheel groove (41) along the circumferential direction, and six second grinding wheels (421) are evenly arranged in the second grinding wheel groove (42) along the circumferential direction. The six first grinding wheels (411) and the second grinding wheels (421) are staggered with each other. Three third grinding wheels (431) are evenly arranged in the third grinding wheel groove (43) along the circumferential direction.

7. A coal crushing device as described in claim 4, characterized in that: The flow guiding assembly includes a connecting frame (5) fitted with a bearing (322) at the end of the connecting rod (32), a positioning plate (50) fixed to the end of the connecting rod (32), and a flow guiding plate (51) screwed onto the upper end of the positioning plate (50). The connecting frame (5) is located above the first roller groove (41), and a fixing block (52) extending outward is provided at the edge of the connecting frame (5). The fixing block (52) is screwed to the corresponding position of the outer wall of the conical section.

8. A coal crushing device as described in claim 7, characterized in that: The positioning plate (50) is a concave conical structure located above the connecting frame (5). The concave part of the positioning plate (50) is provided with a guide post (501). The end face of the extension end of the connecting rod (32) is provided with a guide hole (323). The guide post (501) is inserted into the guide hole (323) and fixed by a locking bolt (502). The lower diameter of the guide plate (51) is smaller than the ring diameter of the corresponding position of the conical section.

9. A coal crushing device as described in claim 8, characterized in that: At least two baffles (53) are uniformly provided on the upper end surface of the guide plate (51) along the circumferential direction, and each baffle (53) extends along the inclined surface of the conical structure of the positioning plate (50).

10. A coal crushing device as described in claim 4, characterized in that: The output end of the second power motor (30) is connected to an active tooth (310) that meshes with the reduction gear (31). A through hole is provided in the middle of the reduction gear (31), and a connecting sleeve (311) that is sleeved with the connecting rod (32) is provided in the through hole. At least two support rods (312) that are connected to the hole wall of the through hole are provided on the outer side wall of the connecting sleeve (311). The gap between two adjacent support rods (312) is connected to the lower end outlet of the housing (1).

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