Crushing device for coal mining

Abstract

The utility model discloses a crushing device for coal mining, which relates to the field of coal mining, and comprises a crusher main body, a coal inlet is arranged above the crusher main body, an absorption shell is sleeved outside the coal inlet, one side of the absorption shell is communicated with a transition shell, and the transition shell is communicated with the crusher main body. The end, away from the absorption shell, of the transition shell is provided with a collection shell in a communicating mode, and a liquid dropping assembly is rotationally installed in the collection shell. By arranging fan blades, when a collection groove hole sucks air, the position of a coal inlet is in a micro-negative-pressure state, coal powder can be well captured, and the coal powder can be effectively collected; the coal dust collecting device has the advantages that the coal dust is prevented from flying to cause pneumoconiosis of workers, the safety of a processing environment is guaranteed, fan blades finally enable airflow to penetrate through a breathable screen plate to be blown out of the device, the coal dust can be collected in a collecting shell, the coal dust is captured and collected, on one hand, the coal dust can be prevented from flying to pollute the working environment, and on the other hand, the coal dust can be collected for follow-up reutilization. And coal mine waste during crushing is reduced.

Description

Technical Field

[0001] The utility model relates to the field of coal mining, in particular to a crushing device for coal mining. Background Art

[0002] Coal directly mined from coal mines is often of different sizes. Large pieces of coal will take up more space during transportation, reducing the loading capacity of transportation vehicles. By crushing coal into appropriate particle sizes through a crusher, the loading capacity of transportation vehicles can be significantly increased, the number of transportations can be reduced, and transportation costs can be reduced.

[0003] A large amount of dust may also be generated during the crushing process, posing a threat to the environment and the respiratory health of workers. Long-term inhalation of dust may lead to respiratory diseases such as pneumoconiosis. Pneumoconiosis is a systemic disease caused by long-term inhalation of industrial dust and its retention in the lungs, characterized by diffuse fibrosis of lung tissue. It can cause symptoms such as coughing, sputum, wheezing, and shortness of breath, seriously affecting the quality of life.

[0004] Coal powder produced by coal mine crushing can be used as fuel; Coal powder is produced in the process of coal mine crushing, and its particle size is small, usually less than 0.5 mm; Due to its high calorific value and combustion stability, coal powder is widely used as fuel, especially in the power, metallurgy, chemical and other industries;

[0005] Traditional crushers cannot prevent dust from flying and cannot collect coal powder. On the one hand, this increases the incidence of illness among workers, and on the other hand, it causes a waste of resources.

[0006] Therefore, it is necessary to propose a crushing device for coal mining to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a crushing device for coal mining, so as to solve the above-mentioned problem that coal powder is easily caused to fly and cannot be collected.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crushing device for coal mining, comprising a crusher main body, a coal inlet on the top of the crusher main body, an absorption shell on the outside of the coal inlet, a transition shell connected to one side of the absorption shell, a collecting shell connected to one end of the transition shell away from the absorption shell, a dripping assembly rotatably installed inside the collecting shell, the dripping assembly is used to spray water to agglomerate coal powder, a fan shell is connected to one side of the collecting shell away from the crusher main body, a first motor is provided on the side of the fan shell away from the first motor, a first connecting shaft is fixedly installed on the driving end of the first motor, the first connecting shaft extends to the inside of the fan shell and is fixedly installed with fan blades, and a gear group for deceleration is installed on the side of the fan blades close to the collecting shell.

[0009] Preferably, the drip assembly includes a first support plate, a second connecting shaft is fixedly installed in the middle of one side of the first support plate, a filter plate is fixedly installed on a side of the collecting shell close to the fan shell, the first support plate is close to the surface of the filter plate, the second connecting shaft is rotatably installed in the middle of the filter plate, the second connecting shaft passes through the filter plate and is fixedly installed with the gear set, a second support plate is provided in the middle of one side of the first support plate away from the second connecting shaft, a plurality of evenly distributed third support plates are fixedly installed at the outer circle of the second support plate, a round rod is fixedly installed between the third support plate and the first support plate, a water inlet is provided in the middle of one side of the second support plate away from the first support plate, a first connecting channel connected to the water inlet is provided in the middle of the third support plate, a second connecting channel connected to the first connecting channel is provided inside the round rod, and a plurality of spray heads connected to the second connecting channel are fixedly installed at the lower end of the outer surface of the round rod.

[0010] Preferably, a water inlet pipe is provided on the side of the second support plate away from the first support plate, the water inlet pipe penetrates the collecting shell and extends to the outside of the collecting shell, a circular ring is fixedly installed on one end of the water inlet pipe close to the second support plate, the circular ring is rotatably clamped inside the water inlet, and a water outlet trough is opened at the upper end of the circular ring.

[0011] Preferably, an annular first channel is provided inside the absorption shell, and a plurality of evenly distributed collecting slots are provided on the inner surface of the absorption shell, and the collecting slots are communicated with the coal inlet.

[0012] Preferably, the gear set includes a first gear, which is fixedly mounted in the middle of the fan blade, a second gear is meshed on one side of the first gear, a third gear is fixedly mounted on one side of the second gear, the second gear and the third gear are rotatably mounted inside the fan casing, a fourth gear is meshed on one side of the third gear, and the second connecting shaft passes through the filter plate and is fixedly mounted in the middle of the fourth gear.

[0013] Preferably, a second motor is fixedly mounted on one side of the outer surface of the collection shell, a circular plate is fixedly mounted on the driving end of the second motor, an insertion rod is fixedly mounted on one end of the lower surface of the circular plate, a screen plate is slidably mounted on the lower surface of the collection shell, a movable groove is opened at the end of the screen plate, and the insertion rod is movably mounted inside the movable groove.

[0014] Preferably, a breathable mesh plate is fixedly mounted on a side of the fan housing away from the collecting housing, and the first connecting shaft passes through the breathable mesh plate.

[0015] Preferably, the diameter of the first gear is smaller than the diameter of the second gear, the diameter of the third gear is smaller than the diameter of the second gear, and the diameter of the fourth gear is larger than the diameter of the third gear.

[0016] Technical effects and advantages of the utility model:

[0017] 1. This device is provided with fan blades. When the collecting slots are absorbing air, the coal inlet is in a state of slight negative pressure, which can capture the coal powder well, prevent the flying coal powder from causing pneumoconiosis of workers, and ensure the safety of the processing environment. The fan blades will eventually blow the airflow through the air-permeable mesh plate out of the device, and the coal powder will be collected inside the collecting shell, thus realizing the capture and collection of the coal powder. On the one hand, it can prevent the flying coal powder from polluting the working environment, and on the other hand, it can collect the coal powder for subsequent reuse, reducing the waste of coal mines during crushing;

[0018] 2. By setting the ring, only one sprinkler head at the top will spray water droplets, which will absorb the coal powder at a high place and drop it to the bottom of the collection shell, preventing the excessive flying coal powder from clogging the device or escaping the coal powder, and making it more convenient to collect the coal powder, so that the coal powder is always collected at the bottom of the collection shell;

[0019] 3. By setting up a gear set, the device can scrape and clean the filter plate when sucking coal powder, preventing excessive coal powder from clogging the filter plate and ensuring that the device can operate stably for a long time;

[0020] 4. The coal powder absorbed by the water droplets will fall on the surface of the screen plate. At this time, the second motor will work to drive the circular plate and the plug rod to rotate, and then drive the screen plate to slide repeatedly on the lower surface of the collecting shell, which can move the coal powder agglomerated above back and forth to make the coal powder agglomerated into pieces. Because coal powder can also be used as an important fuel, the device can capture the coal powder and agglomerate it into blocks for easy transportation to a suitable site. Then, the coal powder can be dried and lightly twisted to restore it to coal powder, reducing resource waste and making transportation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a structural schematic diagram of a crushing device for coal mining from one perspective.

[0022] Figure 2 This is a schematic structural diagram of the utility model coal mining crushing device from another perspective.

[0023] Figure 3 It is a structural schematic diagram of the absorption shell in the utility model.

[0024] Figure 4 It is a schematic diagram of the structure inside the collecting shell in the utility model.

[0025] Figure 5 It is a schematic diagram of the structure inside the fan housing of the utility model.

[0026] Figure 6 It is a structural schematic diagram of the dripping component in the utility model.

[0027] Figure 7 For this utility model Figure 6 Enlarged view of point A in the middle.

[0028] Figure 8 For this utility model Figure 6 Enlarged view of point B in the middle.

[0029] Fig. 9 It is a schematic diagram of the structure of the gear set in the utility model.

[0030] Fig.10 It is a schematic diagram of the connection structure between the second motor and the screen plate in the utility model.

[0031] In the figure: 1. crusher body; 2. absorption shell; 3. transition shell; 4. collection shell; 5. fan shell; 6. first motor; 7. drip assembly; 8. gear set; 11. coal inlet; 21. first channel; 22. collecting slot; 41. filter plate; 42. second motor; 43. sieve plate; 51. air permeable mesh plate; 61. first connecting shaft; 62. fan blade; 71. first support plate; 72. second connecting shaft; 73. second support plate; 74. third support plate; 75. round rod; 76. water inlet pipe; 81. first gear; 82. second gear; 83. third gear; 84. fourth gear; 421. round plate; 422. plug rod; 431. movable groove; 731. water inlet; 741. first connecting channel; 751. second connecting channel; 752. sprinkler head; 761. ring; 762. water outlet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The utility model provides Figure 1-Figure 10The crushing device for coal mining shown in the figure comprises a crusher body 1, a coal inlet 11 is provided on the top of the crusher body 1, an absorption shell 2 is sleeved on the outside of the coal inlet 11, an annular first channel 21 is provided inside the absorption shell 2, a plurality of evenly distributed collecting slots 22 are provided on the inner surface of the absorption shell 2, the collecting slots 22 are connected to the coal inlet 11, a transition shell 3 is connected and installed on one side of the absorption shell 2, a collecting shell 4 is connected and installed on one end of the transition shell 3 away from the absorption shell 2, a dripping assembly 7 is rotatably installed inside the collecting shell 4, and the dripping assembly 7 is rotatably installed inside the dripping shell 4. The liquid component 7 is used for spraying water to agglomerate the coal powder. The side of the collecting shell 4 away from the crusher body 1 is connected to and installed with a fan shell 5. The side of the fan shell 5 away from the first motor 6 is provided with a first motor 6. The side of the fan shell 5 away from the collecting shell 4 is fixedly installed with an air-permeable mesh plate 51. The first connecting shaft 61 penetrates the air-permeable mesh plate 51. The driving end of the first motor 6 is fixedly installed with the first connecting shaft 61. The first connecting shaft 61 extends to the interior of the fan shell 5 and is fixedly installed with fan blades 62. The fan blades 62 are close to the collecting shell 4 and a gear set 8 for deceleration is installed.

[0034] During actual use, the device is powered on, and the first motor 6 drives the first connecting shaft 61 to rotate, and the first connecting shaft 61 drives the fan blades 62 to rotate. The rotation of the fan blades 62 can absorb the air inside the collecting shell 4, and then the airflow will be sucked into the interior of the first channel 21 from the collecting slot 22, and then enter the interior of the collecting shell 4 along the interior of the transition shell 3, and then pass through the filter plate 41 into the interior of the fan shell 5. The collecting slot 22 can absorb the coal powder attached to the coal passing through, and the coal powder is blocked on the surface of the filter plate 41. When absorbing air, the collecting slot 22 makes the position of the coal inlet 11 in a slightly negative pressure state, which can well capture the coal powder, prevent the coal powder from flying and causing workers' pneumoconiosis, and ensure the safety of the processing environment. The fan blades 62 finally blow the airflow out of the device through the air permeable mesh plate 51, and the coal powder will be collected in the interior of the collecting shell 4, realizing the capture and collection of the coal powder. On the one hand, it can prevent the coal powder from flying and polluting the working environment, and on the other hand, it can collect the coal powder for subsequent reuse, reducing the waste of coal during crushing.

[0035] The drip assembly 7 includes a first support plate 71, a second connecting shaft 72 is fixedly installed in the middle of one side of the first support plate 71, a filter plate 41 is fixedly installed on the side of the collecting housing 4 close to the fan housing 5, the first support plate 71 is close to the surface of the filter plate 41, the second connecting shaft 72 is rotatably installed in the middle of the filter plate 41, the second connecting shaft 72 penetrates the filter plate 41 and is fixedly installed with the gear set 8, a second support plate 73 is provided in the middle of one side of the first support plate 71 away from the second connecting shaft 72, a plurality of evenly distributed third support plates 74 are fixedly installed on the outer ring of the second support plate 73, a round rod 75 is fixedly installed between the third support plate 74 and the first support plate 71, and a side of the second support plate 73 away from the first support plate 71 is provided with a third support plate 74, and a round rod 75 is fixedly installed between the third support plate 74 and the first support plate 71. A water inlet 731 is provided in the middle of the side, a first connecting channel 741 connected to the water inlet 731 is provided in the middle of the third support plate 74, a second connecting channel 751 connected to the first connecting channel 741 is provided inside the round rod 75, and a plurality of spray heads 752 connected to the second connecting channel 751 are fixedly installed at the lower end of the outer surface of the round rod 75. A water inlet pipe 76 is provided on the side of the second support plate 73 away from the first support plate 71. The water inlet pipe 76 penetrates the collecting shell 4 and extends to the outside of the collecting shell 4. A circular ring 761 is fixedly installed at one end of the water inlet pipe 76 close to the second support plate 73. The circular ring 761 is rotatably clamped inside the water inlet 731, and a water outlet trough 762 is provided at the upper end of the circular ring 761.

[0036] Before use, the water inlet pipe 76 is connected to the external water supply equipment, and the water flow will pass through the ring 761 and the water outlet trough 762 to enter the interior of the first connecting channel 741 above. At this time, the water flow passes through the first connecting channel 741 and enters the interior of the second connecting channel 751, and then the spray head 752 will sprinkle water droplets. At this time, the flying coal powder inside the collection shell 4 will be absorbed by the water droplets and fall to the bottom of the collection shell 4. When the drip assembly 7 continues to rotate, the first connecting channel 741 and the water outlet trough 762 are staggered. At this time, the first connecting channel 741 is in a closed state, and then the spray head 752 will not spray water. Only when one of the first connecting channels 741 is located above the water outlet trough 762, it will be closed and then the spray head 752 will sprinkle water droplets to absorb the suspended coal powder to prevent excessive suspended coal powder inside the collection shell 4 from clogging the filter plate 41.

[0037] By setting the circular ring 761, only the upper sprinkler head 752 will spray water droplets, which will absorb the coal powder at a high place and drop it to the bottom of the collecting shell 4, preventing excessive flying coal powder from clogging the device or escaping the coal powder, and making it more convenient to collect the coal powder, so that the coal powder is always collected at the bottom of the collecting shell 4.

[0038] The gear set 8 includes a first gear 81, which is fixedly mounted in the middle of the fan blade 62, a second gear 82 is meshed on one side of the first gear 81, a third gear 83 is fixedly mounted on one side of the second gear 82, the second gear 82 and the third gear 83 are rotatably mounted inside the fan housing 5, a fourth gear 84 is meshed on one side of the third gear 83, the second connecting shaft 72 passes through the filter plate 41 and is fixedly mounted in the middle of the fourth gear 84, the diameter of the first gear 81 is smaller than the diameter of the second gear 82, the diameter of the third gear 83 is smaller than the diameter of the second gear 82, and the diameter of the fourth gear 84 is larger than the diameter of the third gear 83.

[0039] When the first motor 6 drives the first connecting shaft 61 and the fan blade 62 to rotate, the first gear 81 will be driven to rotate synchronously. At this time, the first gear 81 drives the second gear 82 to rotate, and the second gear 82 drives the third gear 83 to rotate coaxially, and the third gear 83 drives the fourth gear 84 to rotate. Because the diameter of the second gear 82 is larger than the diameter of the first gear 81, the rotation speed of the second gear 82 is smaller than the rotation speed of the first gear 81. The second gear 82 and the third gear 83 have the same rotation speed because they are coaxial. The third gear 83 is smaller than the diameter of the fourth gear 84, so the rotation speed of the fourth gear 84 is smaller than the rotation speed of the third gear 83, thereby converting the high-speed rotation of the first motor 6 into low-speed rotation. When the fourth gear 84 rotates, it drives the first support plate 71 to rotate, thereby providing power for the rotation of the drip assembly 7. When the first support plate 71 rotates, the surface of the filter plate 41 can be cleaned.

[0040] By providing the gear set 8, the device can scrape and clean the filter plate 41 when sucking coal powder, preventing the filter plate 41 from being blocked by excessive coal powder, thereby ensuring that the device can operate stably for a long time.

[0041] A second motor 42 is fixedly installed on one side of the outer surface of the collecting shell 4, a circular plate 421 is fixedly installed on the driving end of the second motor 42, an insertion rod 422 is fixedly installed on one end of the lower surface of the circular plate 421, a sieve plate 43 is slidably mounted on the lower surface of the collecting shell 4, a movable groove 431 is opened at the end of the sieve plate 43, and the insertion rod 422 is movably mounted inside the movable groove 431.

[0042] The coal powder absorbed by the water droplets will fall on the surface of the screen plate 43. At this time, the second motor 42 will work to drive the circular plate 421 and the plug rod 422 to rotate, and then drive the screen plate 43 to slide repeatedly on the lower surface of the collecting shell 4, so that the coal powder agglomerated above can be moved back and forth to make the coal powder agglomerated into pieces, which is convenient for subsequent transportation. Because coal powder can also be used as an important fuel, and traditional crushing devices will cause a large amount of coal powder to escape and be wasted, and it will also cause coal powder loss in subsequent transportation, resulting in a large amount of resource waste. The device can capture the coal powder and agglomerate it into blocks, which is convenient for transportation to a suitable site, and then the coal powder can be dried and lightly twisted to restore it to coal powder, reducing resource waste and making transportation more convenient.

[0043] Working principle: When the device is actually used, the first motor 6 drives the first connecting shaft 61 to rotate, and the first connecting shaft 61 drives the fan blades 62 to rotate. The rotation of the fan blades 62 can absorb the air inside the collecting shell 4, and then the airflow will be sucked into the first channel 21 from the collecting slot 22, and then enter the collecting shell 4 along the interior of the transition shell 3, and then pass through the filter plate 41 to enter the fan shell 5. The collecting slot 22 can absorb the coal powder attached to the coal mine passing through, and the coal powder is blocked on the surface of the filter plate 41. When the collecting slot 22 absorbs air, the position of the coal inlet 11 is in a slightly negative pressure state, which can well capture the coal powder, prevent the coal powder from flying and causing workers' pneumoconiosis, and ensure the safety of the processing environment. The fan blades 62 finally blow the airflow through the air permeable mesh plate 51 out of the device, and the coal powder will be collected inside the collecting shell 4;

[0044] Before use, the water inlet pipe 76 is connected to the external water supply equipment, and the water flow will pass through the ring 761 and the water outlet groove 762 to enter the interior of the first connecting channel 741 above. At this time, the water flow passes through the first connecting channel 741 and enters the interior of the second connecting channel 751, and then the spray head 752 will sprinkle water droplets. At this time, the flying coal powder inside the collection shell 4 will be absorbed by the water droplets and fall to the bottom of the collection shell 4. When the drip assembly 7 continues to rotate, the first connecting channel 741 and the water outlet groove 762 are staggered. At this time, the first connecting channel 741 is in a closed state, and then the spray head 752 will not sprinkle water. Only when one of the first connecting channels 741 is located above the water outlet groove 762, it will be closed and then the spray head 752 will sprinkle water droplets to absorb the suspended coal powder, so as to prevent the filter plate 41 from being blocked by excessive suspended coal powder inside the collection shell 4.

[0045] When the first motor 6 drives the first connecting shaft 61 and the fan blade 62 to rotate, the first gear 81 will be driven to rotate synchronously, and the first gear 81 drives the second gear 82 to rotate, and the second gear 82 drives the third gear 83 to rotate coaxially, and the third gear 83 drives the fourth gear 84 to rotate. Because the diameter of the second gear 82 is larger than the diameter of the first gear 81, the rotation speed of the second gear 82 is lower than the rotation speed of the first gear 81. The second gear 82 and the third gear 83 have the same rotation speed because they are coaxial. The third gear 83 is smaller than the diameter of the fourth gear 84, so the rotation speed of the fourth gear 84 is lower than the rotation speed of the third gear 83, thereby converting the high-speed rotation of the first motor 6 into low-speed rotation. When the fourth gear 84 rotates, it drives the first support plate 71 to rotate, thereby providing power for the rotation of the drip assembly 7. When the first support plate 71 rotates, it can clean the surface of the filter plate 41;

[0046] The coal powder absorbed by the water droplets will fall on the surface of the screen plate 43. At this time, the second motor 42 will work to drive the circular plate 421 and the insertion rod 422 to rotate, thereby driving the screen plate 43 to slide repeatedly on the lower surface of the collecting shell 4, and can move the coal powder agglomerated above back and forth so that the coal powder agglomerates into pieces.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crushing device for coal mining, comprising a crusher body (1), wherein the upper portion of the crusher body (1) is provided with a coal inlet (11), characterized in that: The coal inlet (11) is provided with an absorption shell (2) on the outside, a transition shell (3) is connected to and installed on one side of the absorption shell (2), a collection shell (4) is connected to and installed on the end of the transition shell (3) away from the absorption shell (2), a drip assembly (7) is rotatably installed inside the collection shell (4), the drip assembly (7) is used for spraying water to agglomerate the coal powder, a fan shell (5) is connected to and installed on the side of the collection shell (4) away from the crusher body (1), a first motor (6) is provided on the side of the fan shell (5) away from the first motor (6), a first connecting shaft (61) is fixedly installed on the driving end of the first motor (6), the first connecting shaft (61) extends to the inside of the fan shell (5) and is fixedly installed with a fan blade (62), and a gear group (8) for speed reduction is installed on the side of the fan blade (62) close to the collection shell (4).

2. A crushing device for coal mining according to claim 1, characterized in that: The drip assembly (7) comprises a first support plate (71), a second connecting shaft (72) is fixedly mounted in the middle of one side of the first support plate (71), a filter plate (41) is fixedly mounted on the side of the collection housing (4) close to the fan housing (5), the first support plate (71) is closely attached to the surface of the filter plate (41), the second connecting shaft (72) is rotatably mounted in the middle of the filter plate (41), the second connecting shaft (72) penetrates the filter plate (41) and is fixedly mounted to the gear set (8), a second support plate (73) is provided in the middle of one side of the first support plate (71) away from the second connecting shaft (72), and the outer ring of the second support plate (73) is fixedly mounted. A plurality of evenly distributed third support plates (74) are fixedly installed, a round rod (75) is fixedly installed between the third support plate (74) and the first support plate (71), a water inlet (731) is provided in the middle of one side of the second support plate (73) away from the first support plate (71), a first connecting channel (741) communicating with the water inlet (731) is provided in the middle of the third support plate (74), a second connecting channel (751) communicating with the first connecting channel (741) is provided inside the round rod (75), and a plurality of spray heads (752) communicating with the second connecting channel (751) are fixedly installed at the lower end of the outer surface of the round rod (75).

3. A crushing device for coal mining according to claim 2, characterized in that: A water inlet pipe (76) is provided on a side of the second support plate (73) away from the first support plate (71); the water inlet pipe (76) penetrates the collecting shell (4) and extends to the outside of the collecting shell (4); a circular ring (761) is fixedly installed on one end of the water inlet pipe (76) close to the second support plate (73); the circular ring (761) is rotatably clamped inside the water inlet (731); and a water outlet groove (762) is provided at the upper end of the circular ring (761).

4. A crushing device for coal mining according to claim 1, characterized in that: An annular first channel (21) is provided inside the absorption shell (2), and a plurality of evenly distributed collecting slots (22) are provided on the inner surface of the absorption shell (2), wherein the collecting slots (22) are connected to the coal inlet (11).

5. A crushing device for coal mining according to claim 2, characterized in that: The gear set (8) comprises a first gear (81), the first gear (81) is fixedly mounted on the middle of the fan blade (62), a second gear (82) is meshed on one side of the first gear (81), a third gear (83) is fixedly mounted on one side of the second gear (82), the second gear (82) and the third gear (83) are rotatably mounted inside the fan housing (5), a fourth gear (84) is meshed on one side of the third gear (83), and the second connecting shaft (72) passes through the filter plate (41) and is fixedly mounted on the middle of the fourth gear (84).

6. A crushing device for coal mining according to claim 1, characterized in that: A second motor (42) is fixedly mounted on one side of the outer surface of the collection shell (4); a circular plate (421) is fixedly mounted on the driving end of the second motor (42); an insertion rod (422) is fixedly mounted on one end of the lower surface of the circular plate (421); a sieve plate (43) is slidably mounted on the lower surface of the collection shell (4); a movable groove (431) is formed at the end of the sieve plate (43); and the insertion rod (422) is movably mounted inside the movable groove (431).

7. A crushing device for coal mining according to claim 1, characterized in that: A breathable mesh plate (51) is fixedly mounted on the side of the fan housing (5) away from the collecting housing (4), and the first connecting shaft (61) passes through the breathable mesh plate (51).

8. A crushing device for coal mining according to claim 5, characterized in that: The diameter of the first gear (81) is smaller than the diameter of the second gear (82), the diameter of the third gear (83) is smaller than the diameter of the second gear (82), and the diameter of the fourth gear (84) is larger than the diameter of the third gear (83).

Images