Mining crushing device of multi-hammer mechanism and using method of mining crushing device

Abstract

The invention relates to the technical field of mining crushing devices, and discloses a mining crushing device with a multi-hammerhead mechanism and a using method thereof.The mining crushing device comprises a crushing box, a feeding opening and crushing hammers, a discharging guide cylinder is fixed to the bottom of the crushing box in a penetrating mode, and a driving motor is installed on the side edge of the crushing box; and the output end of the driving motor and the end, extending to the outer side of the crushing box, of the crushing hammer are both fixedly provided with a belt pulley I. Through cooperation of a discharging guide roller and a material guide plate at the discharging position, after crushing, qualified products are reasonably crushed, can fall off from gaps of the discharging guide roller and are discharged from a qualified product discharging opening under guiding of the material guide plate; and unqualified products are discharged from the recovery discharging opening, so that the unqualified products can be fed into the crushing box again to be continuously crushed, the problem that when an existing mining crushing device is used for crushing, unqualified particles are inconvenient to separate and then are fed into the crushing box again to be continuously crushed is solved, and secondary crushing of the unqualified products is facilitated while smooth discharging is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of mining crushing devices, and specifically to a mining crushing device with a multi-hammer mechanism and a method of using the same. Background Art

[0002] ‌Mining crusher‌ is a crushing equipment specially designed for mining, smelting, building materials, roads, railways, water conservancy and chemical industries. Its main function is to crush large pieces of ore or other materials into smaller particles to meet the needs of subsequent processing or use. It generally includes jaw crusher, hammer crusher, roller crusher, impact crusher, reverse impact crusher, etc. When the hammer crusher is operating, the rotor rotates at high speed driven by the motor. When the material enters the plate hammer action area, it collides with the plate hammer on the rotor and is crushed. Then it is thrown to the impact device and crushed again, and then bounces back from the impact liner to the plate hammer action area to be crushed again. This process is repeated, and the material enters the first, second, third, and counterattack chambers from large to small for repeated crushing until the material is crushed to the required particle size and discharged from the discharge port. Adjusting the gap between the impact frame and the rotor can achieve the purpose of changing the material discharge particle size and shape.

[0003] At present, the hammer crusher with multiple hammer mechanism is equipped with a screen plate at the bottom of the rotor. The particles smaller than the size of the screen hole in the crushed material are discharged through the screen plate, and the coarse particles larger than the size of the screen hole are retained on the screen plate to continue to be hit and ground by the hammer. However, when the particles larger than the size of the screen hole are retained on the screen plate, if the hammer cannot hit the screen plate, the particles on the screen plate cannot be further crushed. If the hammer hits the screen plate, it is easy to cause damage to the screen plate, resulting in a limited service life of the crushing device. In addition, the particles remaining on the screen plate need to be cleaned regularly to avoid blockage and affect the subsequent particle screening. At the same time, a large amount of smoke and dust will be generated during crushing. When discharging, the discharged dust will cause great pollution to the surrounding environment. Summary of the invention

[0004] In order to solve the problems that unqualified particles in existing mining crushing devices are inconvenient to separate and then put back into continued crushing during crushing, and that there is a lot of dust during crushing, the present invention provides a mining crushing device with a multi-hammer mechanism and a method of using the same to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions: A mining crushing device with a multi-hammer mechanism and a use method thereof, comprises a crushing box, a feed port and a crushing hammer, a material discharge guide cylinder is fixed through the bottom of the crushing box, a driving motor is installed on the side of the crushing box, a pulley is fixed on the output end of the driving motor and one end of the crushing hammer extending to the outside of the crushing box, two of the pulleys are connected by a high-temperature resistant belt transmission, a screening box is fixed through the bottom of the material discharge guide cylinder, a plurality of screening guide rollers are rotatably connected to the inside of the screening box through bearings, a material discharge box is fixed through the bottom of the screening box below the screening guide roller, a recovery discharge port is fixed through the bottom of the screening box on the side of the material discharge box, a qualified product discharge port is fixed through the end of the material discharge box away from the recovery discharge port, a bellows is installed on one side of the material discharge guide cylinder, and a collecting mechanism is arranged on the outside of the material discharge guide cylinder opposite to the bellows.

[0006] Furthermore, a separation sleeve is fitted on the bottom of the screening guide roller farthest from the discharge guide cylinder end, and the front and rear sides of the separation sleeve are fixed on the inner wall of the discharge box. The bottom surfaces on both sides of the separation sleeve are flush with the inner walls of the discharge box and the recovery discharge port respectively, and a guide plate is fixed on the bottom of the discharge box, and the guide plate is inclined downward toward the qualified product discharge port side.

[0007] Furthermore, a plurality of reinforcing plates are fixed on the outer surface of the material discharge guide cylinder, and the upper and lower ends of the reinforcing plates are respectively fixed on the bottom surface of the crushing box and the top surface of the screening box, and the top surface of the screening box is fixedly covered with an observation window.

[0008] Furthermore, one end of each of the screening guide rollers close to the driving motor extends to the outside of the screening box, and a gear is fixed to the end of the screening guide roller extending to the outside of the screening box. All the gears are connected by chain transmission, and a chain guard is sleeved on the outside of the gear. The chain guard is fixed to the side wall of the screening box, and a pulley 2 is fixed to the end of the gear close to the pulley 1 extending to the outside of the chain guard. Pulley 2 is connected to pulley 1 on the driving motor through a high-temperature resistant belt transmission.

[0009] Furthermore, a fan with an air outlet facing the unloading guide cylinder is installed inside the bellows, and a pulley three is fixed to one end of the fan shaft extending to the outside of the bellows. Pulley three is connected to pulley two through another high-temperature resistant belt transmission. An air intake window is opened on the side of the bellows away from the unloading guide cylinder, and a dust filter is fixed inside the air intake window.

[0010] Furthermore, the collecting mechanism includes a supporting box, a collecting box and a handle; a supporting box is fixed through the outer side of the material discharge guide cylinder opposite to the bellows; a collecting box is slidably inserted inside the supporting box; a dust filter is fixed to the end of the collecting box away from the material discharge guide cylinder; air windows cooperating with the bellows and the supporting box are respectively provided on both sides of the material discharge guide cylinder; crushed material filters are fixed inside the two air windows; a baffle is fixed to the lower part of the collecting box close to the material discharge guide cylinder.

[0011] Furthermore, fixed side plates are symmetrically fixed on both sides of the collection box, a fixed sleeve is fixed on the support box between the two fixed side plates, a limiting plug plate is symmetrically slidably sleeved between each group of two fixed sleeves, a spring is fixed between each group of two limiting plug plates, and slots that cooperate with the limiting plug plates are opened on the opposite sides of the two fixed side plates on each side.

[0012] Furthermore, a handle is fixed on the side wall of the collection box between the two fixed side panels on each side, each of the fixed side panels is configured to be L-shaped to cooperate with the support box, each of the limit plug plates is configured to be L-shaped, and a sliding rod is slidably sleeved on the transverse section and spring of the limit plug plate away from the support box side, and the upper and lower ends of the sliding rod are fixed on the inner wall of the fixed sleeve.

[0013] Furthermore, a support plate is fixed on the air vent on the inner side of the support box, a rotating rod is rotatably connected to the side of the support plate close to the dust filter, a cleaning brush is symmetrically fixed to the side of the rotating rod close to the dust filter, and the cleaning brush is inserted 5-8mm into the dust filter on the side away from the crushing filter. Another pulley is fixed on the other end of the rotating rod extending to the outside of the crushing box, and the two pulleys are connected by another high-temperature resistant belt transmission.

[0014] Furthermore, a method for using a mining crushing device with a multi-hammer mechanism is provided, the method comprising the following steps: Step (A), adding materials, crushing and screening; Step (A1), adding the material to be crushed into the crushing box through the feed inlet, turning on the drive motor, so that the drive motor runs through the pulley 1 and the high temperature resistant belt to drive the crushing hammer to rotate, the crushing hammer rotates to crush the material entering the crushing box, and the crushed material is discharged from the bottom of the crushing box through the discharge guide cylinder into the screening box; Step (A2), when the breaker hammer rotates, the gear on the screening guide roller at the end is driven to rotate through the pulley 1, the pulley 2 and the high temperature resistant belt. When the gear rotates, the chain drives all the screening guide rollers to rotate away from the crushing box. When rotating, the crushed material box falling inside the screening box is recovered and transported to the discharge port side; In step (A3), during the conveying process, qualified crushed materials fall onto the guide plate through the gap between two adjacent screening guide rollers, and slide out through the qualified product discharge port under the guidance of the guide plate, while unqualified crushed materials are discharged through the recovery discharge port under the drive of the screening guide roller, and then re-added to the crushing box for crushing after being discharged; Step (B), collecting dust during crushing; Step (B1), when the pulley 2 rotates, the pulley 3 is driven to rotate through another high temperature resistant belt, and the pulley 3 drives the fan inside the bellows to rotate. When the fan rotates, an airflow is generated to flow toward the support box side, and the airflow blows the dust in the crushed material toward the support box, so that the dust passes through the crushed material filter screen and enters the collection box, and the crushed material is blocked by the crushed material filter screen in the discharge guide cylinder; Step (B2), the dust entering the collection box is filtered by the dust filter and collected in the collection box. When the dust collected in the collection box is large, the two limit plugs on each side are pressed relative to each other, so that the limit plugs move relative to each other and compress the spring. After the limit plugs move out of the slots, the limit of the fixed side plates is released, and the collection box can be taken out by holding the handle and pulling the collection box outward. Step (B3), after taking out, pour out the dust inside the collection box, after pouring out, still press the limit plug plate relatively, insert the collection box into the support box, loosen the limit plug plate, so that the limit plug plate is inserted into the slot, and fix the collection box and the support box; Step (B4), when the breaker hammer is running and rotating, the rotating rod is driven to rotate through another pulley 1 and the high temperature resistant belt, and when the rotating rod rotates, the cleaning brush is driven to rotate, and when the cleaning brush rotates, the dust filter is cleaned; Step (C), after the crushing is completed, the driving motor is turned off to stop the crushing hammer from rotating. After the crushing hammer rotates, the screening guide roller fan and the rotating rod are synchronously suspended under the driving action of the second pulley, the high temperature resistant belt and the third pulley.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, through the cooperation of the feeding guide roller and the guide plate at the feeding place, after crushing, qualified broken products can fall from the gap between the feeding guide rollers and be discharged from the qualified product feeding port under the guidance of the guide plate, and unqualified products are discharged from the recovery feeding port, so that they can be put back into the crushing box for further crushing, which solves the problem that the unqualified particles of the existing mining crushing device are inconvenient to be separated during crushing and then put back into the crushing box for further crushing, and ensures smooth feeding while facilitating the secondary crushing of unqualified products.

[0016] 2. In the present invention, the dust generated by crushing can be collected by the side bellows and the collecting box during crushing and unloading, thereby avoiding large dust when unloading at the unloading port, solving the problem of large dust during crushing of the existing mining crushing device and improving the safety of the crushing device during use.

[0017] 3. In the present invention, the driving motor drives the breaker hammer, the material discharge guide roller and the fan to run simultaneously, so that the crushing device is more convenient to control when in use, and ensures the uniformity of starting of each mechanism when the crushing device is in operation, thereby improving the convenience of controlling the crushing device when in use.

[0018] 4. In the present invention, a cleaning brush is arranged inside the support box. When collecting dust, the cleaning brush is driven by a pulley outside the breaker to rotate to clean the dust filter, thereby preventing dust from accumulating on the dust filter and causing blockage, thereby ensuring the stability of dust during collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of a crushing device according to an embodiment of the present application; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the crushing device in another perspective in the embodiment shown; Figure 3 yes Figure 1 A schematic diagram of the partial structure of the crushing device in the embodiment shown; Figure 4 yes Figure 1 A schematic cross-sectional view of a local structure of a crushing device in the illustrated embodiment; Figure 5 yes Figure 1 A schematic diagram of the connection structure of the collecting box in the illustrated embodiment; Figure 6 yes Figure 1 A schematic diagram of the local structure of the crushing device in the embodiment shown in FIG.

[0021] The meanings of the reference numerals in the figure are as follows: 1. Crushing box; 2. Feeding port; 3. Crushing hammer; 4. Driving motor; 5. Pulley one; 6. Feeding guide cylinder; 7. Screening box; 8. Screening guide roller; 9. Chain guard; 10. Pulley two; 11. High temperature resistant belt; 12. Recycling feeding port; 13. Partition sleeve; 14. Feeding box; 15. Guide plate; 16. Qualified product feeding port; 17. Observation window; 18. Reinforcement plate; 19. Bellows; 20. Pulley three; 21. Breathable window; 22. Support box; 23. Collecting box; 24. Handle; 25. Fixed side panel; 26. Fixed sleeve; 27. Limiting plug plate; 28. Spring; 29. ​​Sliding rod; 30. Slot; 31. Support plate; 32. Rotating rod; 33. Cleaning brush; 34. Dust filter; 35. Crushed material filter. DETAILED DESCRIPTION

[0022] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Reference Figure 1 , Figure 2 and Figure 4A mining crushing device with a multi-hammer mechanism and a method of using the same include a crushing box 1, a feed port 2 and a crushing hammer 3. A material discharge guide cylinder 6 is fixedly connected to the bottom of the crushing box 1. A driving motor 4 is installed on the side of the crushing box 1. A pulley 5 is fixedly connected to the output end of the driving motor 4 and the end of the crushing hammer 3 extending to the outside of the crushing box 1. The two pulleys 5 are connected by a high-temperature resistant belt 11. A screening box 7 is fixedly connected to the bottom of the material discharge guide cylinder 6. A plurality of screening guide rollers 8 are rotatably connected to the inside of the screening box 7 through bearings. A material discharge box 14 is fixedly connected to the bottom of the screening box 7 below the screening guide rollers 8. A recovery discharge port 12 is fixedly connected to the bottom of the screening box 7 on the side of the discharge box 14. A qualified material discharge port 12 is fixedly connected to the end of the discharge box 14 away from the recovery discharge port 12. A material discharge port 16 is provided, and a bellows 19 is installed on one side of the discharge guide cylinder 6. A fan with an air outlet facing the discharge guide cylinder 6 is installed inside the bellows 19. A pulley three 20 is fixed to one end of the fan shaft extending to the outside of the bellows 19. The pulley three 20 is connected to the pulley two 10 through another high-temperature resistant belt 11 for transmission. An air intake window is provided on the side of the bellows 19 away from the discharge guide cylinder 6, and a dust filter 34 is fixed inside the air intake window. When the airflow enters the inside of the bellows 19 through the air intake window, the high-temperature belt 11 and the driving motor 4 on the outside of the bellows 19 are also dissipated and cooled. At the same time, when the airflow is discharged, it can take away the heat inside the crushing box 1, so as to dissipate the heat inside the crushing box 1. A collecting mechanism is provided on the outside of the discharge guide cylinder 6 opposite to the bellows 19.

[0024] Specifically, a partition sleeve 13 is fitted on the bottom of the screening guide roller 8 farthest from the end of the discharge guide cylinder 6, and the front and rear sides of the partition sleeve 13 are fixed on the inner wall of the discharge box 14. The bottom surfaces of both sides of the partition sleeve 13 are flush with the inner walls of the discharge box 14 and the recovery discharge port 12 respectively. A guide plate 15 is fixed to the bottom of the discharge box 14, and the guide plate 15 is inclined downward toward the qualified product discharge port 16. A plurality of reinforcing plates 18 are fixed to the outer surface of the discharge guide cylinder 6, and the upper and lower ends of the reinforcing plates 18 are respectively fixed to the bottom surface of the crushing box 1 and the top surface of the screening box 7, and the top surface of the screening box 7 is fixedly covered with an observation window 17.

[0025] When screening the crushed materials, in order to drive the screening guide roller 8 to rotate, one end of each screening guide roller 8 close to the driving motor 4 extends to the outside of the screening box 7, and a gear is fixed to the end of the screening guide roller 8 extending to the outside of the screening box 7. All the gears are connected by chain transmission. A chain guard 9 is sleeved on the outside of the gear, and the chain guard 9 is fixed on the side wall of the screening box 7. A pulley 2 10 is fixed to the end of the gear close to the pulley 1 5 extending to the outside of the chain guard 9. The pulley 2 10 is connected to the pulley 1 5 on the driving motor 4 through a high-temperature resistant belt 11.

[0026] As a further optimization scheme, the collection mechanism includes a support box 22, a collection box 23 and a handle 24. The support box 22 is fixed to the outer side of the material discharge guide cylinder 6 opposite to the bellows 19. The collection box 23 is slidably inserted inside the support box 22. A dust filter 34 is fixed to the end of the collection box 23 away from the material discharge guide cylinder 6. Air windows 21 cooperating with the bellows 19 and the support box 22 are respectively provided on both sides of the material discharge guide cylinder 6. Crushed material filters 35 are fixed inside the two air windows 21. A baffle is fixed to the lower part of the collection box 23 near the material discharge guide cylinder 6 , to prevent dust from falling out through the opening of the collection box 23 when the collection box 23 is pulled out, and the baffle is located below the rotating rod 32 to avoid affecting the normal rotation of the rotating rod 32, fixed side plates 25 are symmetrically fixed on both sides of the collection box 23, a fixed sleeve 26 is fixed on the support box 22 between the two fixed side plates 25, and a limit plate 27 is symmetrically slidably sleeved between each group of two fixed sleeves 26, and a spring 28 is fixed between each group of two limit plates 27, and slots 30 that cooperate with the limit plates 27 are opened on the opposite sides of the two fixed side plates 25 on each side.

[0027] Specifically, a handle 24 is fixed on the side wall of the collection box 23 between the two fixed side panels 25 on each side, which is convenient for pulling the collection box 23, making the collection box 23 more convenient and labor-saving when cleaning and maintaining. Each fixed side panel 25 is set to an L-shape that cooperates with the support box 22, and each limit plug plate 27 is set to an L-shape. The horizontal section of the limit plug plate 27 away from the side of the support box 22 and the spring 28 are slidably sleeved with a sliding rod 29, and the upper and lower ends of the sliding rod 29 are fixed to the inner wall of the fixed sleeve 26.

[0028] When filtering dust, in order to prevent the filtered dust from sticking to the dust filter 34 under the action of airflow, a support plate 31 is fixed on the air vent 21 on the inner side of the support box 22, and a rotating rod 32 is rotatably connected to the side of the support plate 31 close to the dust filter 34, and a cleaning brush 33 is symmetrically fixed to the side of the rotating rod 32 close to the dust filter 34, and the side of the cleaning brush 33 away from the crushing filter 35 is inserted into the dust filter 34 by 5-8 mm, so that the cleaning brush 33 extends into the dust filter 34, so that the cleaning brush 33 cleans the dust filter 34 when rotating, and another pulley 5 is fixed on the rotating rod 32 at the other end of the breaker 3 extending to the outside of the breaker box 1, and the two pulleys 5 are connected by another high temperature resistant belt 11.

[0029] Working principle: add materials for crushing and screening. Add the materials to be crushed into the crushing box 1 through the feed port 2, turn on the drive motor 4, and make the drive motor 4 run through the pulley 1 5 and the high temperature resistant belt 11 to drive the crushing hammer 3 to rotate. The crushing hammer 3 rotates to crush the materials entering the crushing box 1. The crushed materials are discharged from the bottom of the crushing box 1 through the unloading guide cylinder 6 into the screening box 7. When the crushing hammer 3 rotates, it drives the screening guide roller 8 at the end through the pulley 1 5, the pulley 2 10 and the high temperature resistant belt 11. The gear on the upper part rotates. When the gear rotates, all the screening guide rollers 8 are driven by the chain to rotate toward the side away from the crushing box 1. When rotating, the crushed materials falling inside the screening box 7 are transported to the recycling discharge port 12 side. During the transportation process, qualified crushed materials fall onto the guide plate 15 through the gap between two adjacent screening guide rollers 8, and slide out through the qualified product discharge port 16 under the guidance of the guide plate 15. Unqualified crushed materials are driven by the screening guide rollers 8 to be discharged through the recycling discharge port 12, and then added back into the crushing box 1 for crushing. At the same time of crushing, dust in the crushing is collected. When the pulley 2 10 rotates, the pulley 3 20 is driven to rotate through another high-temperature resistant belt 11, and the pulley 3 20 drives the fan inside the bellows 19 to rotate. When the fan rotates, an airflow flowing toward the support box 22 is generated. The airflow blows the dust in the crushed material toward the support box 22, so that the dust passes through the crushed material filter 35 and enters the collection box 23. The crushed material is blocked by the crushed material filter 35 in the unloading guide cylinder 6. The dust entering the collection box 23 is filtered by the dust filter 34 and collected in the collection box 23. When the dust collected in the collection box 23 is large, the two limit plugs 27 on each side are pressed relatively, so that the limit plugs 27 move relatively and compress the spring 28. After the limit plugs 27 are moved out of the slot 30, the limit on the fixed side plate 25 is released, and the grip handle 2 4. Pull the collecting box 23 outward to take out the collecting box 23. After taking it out, pour out the dust inside the collecting box 23. After pouring it out, still press the limit plug plate 27 relatively. After inserting the collecting box 23 into the supporting box 22, loosen the limit plug plate 27 so that the limit plug plate 27 is inserted into the slot 30 to fix the collecting box 23 to the supporting box 22. When the breaker 3 is running and rotating, the rotating rod 32 is driven to rotate by another pulley 1 5 and the high temperature resistant belt 11. When the rotating rod 32 rotates, it drives the cleaning brush 33 to rotate. When the cleaning brush 33 rotates, the dust filter 34 is cleaned. After the crushing is completed, turn off the drive motor 4 to stop the breaker 3. After the breaker 3 rotates, the fan of the screening guide roller 8 and the rotating rod 32 are synchronously suspended under the driving action of the pulley 2 10, the high temperature resistant belt 11 and the pulley 3 20.

[0030] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0031] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A mining crushing device with a multi-hammer mechanism, characterized in that: The invention comprises a crushing box (1), a feed inlet (2) and a crushing hammer (3), wherein a material discharge guide cylinder (6) is fixedly connected to the bottom of the crushing box (1), a driving motor (4) is installed on the side of the crushing box (1), a belt pulley (5) is fixedly connected to the output end of the driving motor (4) and the end of the crushing hammer (3) extending to the outside of the crushing box (1), and the two belt pulleys (5) are connected by a high-temperature resistant belt (11) for transmission, a screening box (7) is fixedly connected to the bottom of the material discharge guide cylinder (6), and the inside of the screening box (7) is connected to the outside of the crushing box (1). A plurality of screening guide rollers (8) are rotatably connected via bearings, a discharge box (14) is fixedly connected through the bottom of the screening box (7) below the screening guide rollers (8), a recovery discharge port (12) is fixedly connected through the bottom of the screening box (7) on the side of the discharge box (14), a qualified product discharge port (16) is fixedly connected through the end of the discharge box (14) away from the recovery discharge port (12), a bellows (19) is installed on one side of the discharge guide cylinder (6), and a collecting mechanism is arranged on the outer side of the discharge guide cylinder (6) opposite to the bellows (19).

2. The mining crushing device with multiple hammer mechanisms according to claim 1 is characterized in that: A separation sleeve (13) is fitted on the bottom of the screening guide roller (8) farthest from the end of the material discharge guide cylinder (6), and the front and rear sides of the separation sleeve (13) are fixed to the inner wall of the material discharge box (14). The bottom surfaces of both sides of the separation sleeve (13) are flush with the inner side walls of the material discharge box (14) and the recovery material discharge port (12), respectively. A guide plate (15) is fixed to the bottom of the material discharge box (14), and the guide plate (15) is tilted downward toward the qualified product discharge port (16).

3. The mining crushing device with multiple hammer mechanisms according to claim 1 is characterized in that: A plurality of reinforcing plates (18) are fixed on the outer surface of the material discharge guide cylinder (6), and the upper and lower ends of the reinforcing plates (18) are respectively fixed to the bottom surface of the crushing box (1) and the top surface of the screening box (7), and the top surface of the screening box (7) is fixedly covered with an observation window (17).

4. The mining crushing device with multiple hammer mechanisms according to claim 1 is characterized in that: One end of each screening guide roller (8) close to the drive motor (4) extends to the outside of the screening box (7), and a gear is fixed to the end of the screening guide roller (8) extending to the outside of the screening box (7). All the gears are connected by chain transmission. A chain protection cover (9) is sleeved on the outside of the gear. The chain protection cover (9) is fixed to the side wall of the screening box (7). A pulley 2 (10) is fixed to the end of the gear close to the pulley 1 (5) extending to the outside of the chain protection cover (9). The pulley 2 (10) is connected to the pulley 1 (5) on the drive motor (4) by a high-temperature resistant belt (11).

5. The mining crushing device with multiple hammer mechanisms according to claim 4 is characterized in that: A fan with an air outlet facing the material discharge guide cylinder (6) is installed inside the bellows (19); a third pulley (20) is fixed to one end of the fan shaft extending to the outside of the bellows (19); the third pulley (20) is connected to the second pulley (10) by another high-temperature resistant belt (11); an air intake window is provided on a side of the bellows (19) away from the material discharge guide cylinder (6); a dust filter (34) is fixed inside the air intake window.

6. The mining crushing device with multiple hammer mechanisms according to claim 5, characterized in that: The collecting mechanism comprises a supporting box (22), a collecting box (23) and a handle (24); the supporting box (22) is fixedly passed through the outer side of the material discharge guide cylinder (6) opposite to the bellows (19); the collecting box (23) is slidably inserted inside the supporting box (22); a dust filter (34) is fixedly disposed at one end of the collecting box (23) away from the material discharge guide cylinder (6); ventilation windows (21) cooperating with the bellows (19) and the supporting box (22) are respectively provided on both sides of the material discharge guide cylinder (6); a dust filter (35) is fixedly disposed inside the two ventilation windows (21); and a baffle is fixedly disposed at the lower part of the collecting box (23) close to the material discharge guide cylinder (6).

7. The mining crushing device with multiple hammer mechanisms according to claim 6 is characterized in that: Fixed side plates (25) are symmetrically fixed on both sides of the collection box (23); a fixed sleeve (26) is fixed on the support box (22) between the two fixed side plates (25); a limit plate (27) is symmetrically slidably sleeved between each group of two fixed sleeves (26); a spring (28) is fixed between each group of two limit plates (27); and slots (30) cooperating with the limit plates (27) are provided on opposite sides of the two fixed side plates (25) on each side.

8. The mining crushing device with multiple hammer mechanisms according to claim 7 is characterized in that: A handle (24) is fixed on the side wall of the collection box (23) between the two fixed side plates (25) on each side, each of the fixed side plates (25) is configured to be L-shaped to match the support box (22), each of the limit plug plates (27) is configured to be L-shaped, and a slide rod (29) is slidably sleeved on the transverse section of the limit plug plate (27) away from the support box (22) and the spring (28), and the upper and lower ends of the slide rod (29) are fixed on the inner wall of the fixed sleeve (26).

9. The mining crushing device with multiple hammer mechanisms according to claim 6, characterized in that: A support plate (31) is fixed on the air vent (21) on the inner side of the support box (22); a rotating rod (32) is rotatably connected to a side of the support plate (31) close to the dust filter (34); a cleaning brush (33) is symmetrically fixed to a side of the rotating rod (32) close to the dust filter (34); a side of the cleaning brush (33) away from the crushed material filter (35) is inserted into the dust filter (34) by 5-8 mm; another pulley (5) is fixed to the other end of the rotating rod (32) extending to the outside of the crushing box (1); and the two pulleys (5) are connected by another high-temperature resistant belt (11).

10. A method for using a mining crushing device with a multi-hammer mechanism according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: Step (A), adding materials, crushing and screening; Step (A1), adding the material to be crushed into the crushing box (1) through the feed inlet (2), turning on the drive motor (4), so that the drive motor (4) drives the crushing hammer (3) to rotate through the pulley (5) and the high temperature resistant belt (11), and the crushing hammer (3) rotates to crush the material entering the crushing box (1), and the crushed material is discharged from the bottom of the crushing box (1) through the discharge guide cylinder (6) into the screening box (7); In step (A2), when the crushing hammer (3) rotates, the gear on the screening guide roller (8) at the end is driven to rotate through the pulley 1 (5), the pulley 2 (10) and the high temperature resistant belt (11). When the gear rotates, the chain drives all the screening guide rollers (8) to rotate away from the crushing box (1). When rotating, the crushed material box falling inside the screening box (7) is transported to the side of the recovery discharge port (12); In step (A3), during the conveying process, qualified crushed materials fall onto the guide plate (15) through the gap between two adjacent screening guide rollers (8), and slide out through the qualified product discharge port (16) under the guidance of the guide plate (15), and unqualified crushed materials are discharged through the recovery discharge port (12) under the drive of the screening guide rollers (8), and after being discharged, they are re-added to the crushing box (1) for crushing; Step (B), collecting dust during crushing; In step (B1), when the pulley 2 (10) rotates, the pulley 3 (20) is driven to rotate via another high temperature resistant belt (11), and the pulley 3 (20) drives the fan inside the bellows (19) to rotate. When the fan rotates, an airflow is generated that flows toward the support box (22). The airflow blows dust in the crushed material toward the support box (22), so that the dust passes through the crushed material filter (35) and enters the collection box (23), and the crushed material is blocked by the crushed material filter (35) in the discharge guide cylinder (6); Step (B2), dust entering the collection box (23) is filtered by the dust filter (34) and collected in the collection box (23). When a large amount of dust is collected in the collection box (23), the two limit plugs (27) on each side are pressed relative to each other so that the limit plugs (27) move relative to each other and compress the spring (28). After the limit plugs (27) are moved out of the slot (30), the limit of the fixed side plate (25) is released, and the collection box (23) is pulled outward by holding the handle (24) to remove the collection box (23). Step (B3), after taking out, pour out the dust inside the collection box (23), after pouring out, still relatively press the limit plug plate (27), insert the collection box (23) into the support box (22), loosen the limit plug plate (27), so that the limit plug plate (27) is inserted into the slot (30), and the collection box (23) is fixed to the support box (22); Step (B4), when the breaker hammer (3) is running and rotating, the rotating rod (32) is driven to rotate through another pulley (5) and the high temperature resistant belt (11), and when the rotating rod (32) rotates, the cleaning brush (33) is driven to rotate, and when the cleaning brush (33) rotates, the dust filter (34) is cleaned; Step (C), after the crushing is completed, the driving motor (4) is turned off to stop the crushing hammer (3) from rotating. After the crushing hammer (3) rotates, the fan of the screening guide roller (8) and the rotating rod (32) are synchronously suspended under the driving action of the second pulley (10), the high temperature resistant belt (11) and the third pulley (20).

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