A rare earth ore crushing device

Abstract

The invention discloses a rare earth ore crushing device, which relates to the technical field of rare earth ore crushing, and comprises a crushing device body, wherein the crushing device body comprises a device mounting bracket, and a rolling screening device is arranged at the upper end of the device mounting bracket. The invention installs the rolling screening device, and the screened rare earth ore falls onto the conveyor belt, and the motor 2 drives the active rotating roller and the conveyor belt to rotate to transport the rare earth ore to the crushing device, and the side baffle and the transverse baffle are used to block the rare earth ore to prevent it from rolling down, and the bottom limit block is used to limit the side baffle so that its rotation angle is limited, and the dust reduction plate plays the role of installing a pump, and the pump water is provided to the spray pipe, and the spray pipe sprays the rare earth ore on the conveyor belt to wet and reduce dust, and the fan plays the role of blowing away the water mist to make the dust reduction range wider and keep the motor 3 dry, so as to solve the problem that a large amount of dust will be generated when the rare earth ore crushing device crushes the rare earth ore.

Description

Technical Field

[0001] The invention relates to the technical field of rare earth ore crushing, and in particular to a rare earth ore crushing device. Background Art

[0002] After mining, rare earth ores need to be crushed to break large pieces of rare earth ore into very fine particles, and then undergo corresponding treatment before wet or pyrometallurgical extraction of rare earth ores. At present, the crushing of rare earth ores is divided into coarse crushing and fine crushing (also called pre-crushing and crushing) and other steps, which require the use of a crushing device. The crushing device refers to a crushing machine in which the content of particles larger than three millimeters in the discharge accounts for more than 50% of the total discharge volume. The crushing operation is often divided into coarse crushing, medium crushing and fine crushing according to the size of the feed and discharge particles. Commonly used crushing machines include jaw crushers, impact crushers, hammer crushers, compound crushers, gyratory crushers, cone crushers, roller crushers, and the like. The following problems exist in the prior art:

[0003] 1. In the prior art, the existing rare earth ore crushing device will generate a large amount of dust when crushing the rare earth ore, and a large amount of dust will be blown outward;

[0004] 2. In the prior art, during crushing, some large particles of rare earth ore will cause severe wear inside the rare earth ore crushing device, affecting its service life, with poor practicality. After crushing, filtering and screening are required, and the crushing efficiency is low. Summary of the invention

[0005] The present invention provides a rare earth ore crushing device, one of the purposes of which is to perform pre-grinding and dust reduction treatment on rare earth ore, so as to solve the problem that a large amount of dust is generated when the existing rare earth ore crushing device is crushing rare earth ore; another purpose is to solve the problem that during crushing, some large particles of rare earth ore will cause severe wear inside the rare earth ore crushing device, affecting its service life, poor practicality, and filtering and screening are required after crushing, resulting in low crushing efficiency, so as to achieve the effect of filtering while crushing.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A rare earth ore crushing device comprises a crushing device body, the crushing device body comprises a device mounting bracket, a rolling and screening device is arranged at the upper end of the device mounting bracket, a crushing device is arranged below the rolling and screening device, the rolling and screening device comprises a crushing frame, a motor, a rolling block, a screen, a second motor and a pump, the lower surface of the crushing frame is fixedly connected to the upper surface of the device mounting bracket, the crushing device comprises a crushing barrel, a third motor and an arc-shaped screen, and a feed port is provided on the upper surface of the crushing barrel.

[0008] A further improvement of the technical solution of the present invention is that: the outer surface of the motor is fixedly connected to the outer surface of the crushing frame, the output shaft of the motor is fixedly installed with a rotating shaft, one end of the rotating shaft is movably connected to the inner surface of the crushing frame, the outer surface of the rotating shaft is fixedly installed with a fixed mounting sleeve, the outer surface of the fixed mounting sleeve is fixedly installed with a telescopic sleeve, and the inner wall of the telescopic sleeve is fixedly installed with an elastic gasket.

[0009] A further improvement of the technical solution of the present invention is that: shock-absorbing connecting rods are hinged at both ends of the rolling block, one end of the shock-absorbing connecting rod is hinged to the outer surface of the fixed mounting sleeve, a telescopic rod is fixedly installed on one side surface of the rolling block, the outer surface of the telescopic rod is slidably connected to the inner surface of the telescopic sleeve, the upper end of the telescopic rod is in contact with one end of the elastic gasket, and pressure-applying crushing teeth are evenly distributed on the other side surface of the rolling block.

[0010] A further improvement of the technical solution of the present invention is that: the side surface of the screen is slidably connected to the inner surface of the crushing frame, the upper surface of the screen is in contact with the lower surface of the pressure-applying crushing teeth, support inner rods are fixedly installed on both sides of the lower surface of the screen, a support outer rod is arranged on the outer side of the support inner rod, the lower end of the support outer rod is fixedly connected to the inner wall of the crushing frame, the outer surface of the support inner rod is movably connected to the inner surface of the support outer rod, the lower end of the support inner rod is hinged with a spring hinged rod, and the lower end of the spring hinged rod is hinged to the inner wall of the support outer rod.

[0011] A further improvement of the technical solution of the present invention lies in that: the outer surface of the second motor is fixedly connected to the outer surface of the device mounting bracket, the output shaft of the second motor is fixedly installed with an active rotating roller, one end of the active rotating roller is movably connected to the inner side wall of the device mounting bracket, a driven rotating roller is provided on one side of the active rotating roller, a conveyor belt is movably installed on the outer surface of the active rotating roller, side baffles are fixedly installed on both sides of the outer surface of the conveyor belt, a bottom limit block is fixedly installed on the lower surface of the side baffles, a transverse baffle is hinged between the side baffles, and the lower surface of the transverse baffle is in contact with the upper surface of the bottom limit block.

[0012] A further improvement of the technical solution of the present invention is that a dust suppression plate is fixedly installed on the lower surface of the pump, and the two sides of the dust suppression plate are respectively fixedly connected to the outer surfaces of the crushing frame and the crushing cylinder, an air inlet net is fixedly installed on the upper surface of the dust suppression plate, a spray pipe is fixedly installed on the top of the inner surface of the dust suppression plate, the inner wall of the spray pipe is fixedly connected to the water outlet pipe of the pump, a spray head is fixedly installed on the lower surface of the spray pipe, and a fan is fixedly installed on the side wall of the dust suppression plate.

[0013] A further improvement of the technical solution of the present invention lies in that: the lower surface of the motor three is fixedly connected to the upper surface of the crushing barrel, the output shaft of the motor three is fixedly installed with a crushing rotating rod, the outer surface of the crushing rotating rod is fixedly installed with a crushing knife, a small grinding head and a rotating support rod, the lower surface of the small grinding head is in contact with the upper surface of the arc screen, one end of the rotating support rod is slidably connected to the upper surface of the arc screen, and the upper surface of the arc screen is provided with a slide groove adapted to the rotating support rod.

[0014] A further improvement of the technical solution of the present invention is that a rotating sleeve is fixedly installed on the lower surface of the arc-shaped screen, an extrusion support rod is sleeved on the lower end of the rotating sleeve, a fixed seat is provided at the lower end of the extrusion support rod, a support plate is fixedly installed on the lower surface of the fixed seat, the side surface of the support plate is fixedly connected to the bottom inner wall of the crushing barrel, and discharge ports are provided on both sides of the support plate.

[0015] A further improvement of the technical solution of the present invention is that a rotating support ball is arranged in the middle of the fixed seat, the upper surface of the rotating support ball is sleeved with the lower surface of the extrusion support rod, magnet balls are hinged on the bottom of both sides of the rotating support ball, and connecting spring rods are fixedly installed between the magnet balls.

[0016] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0017] 1. The present invention provides a rare earth ore crushing device. The rare earth ore is put into a crushing frame by installing a rolling and screening device. The motor drives the rotating shaft and the fixed installation sleeve to rotate. The shock-absorbing connecting rod connects the rolling block and the fixed installation sleeve and performs a buffering and shock-absorbing function. The rolling block rotates with the fixed installation sleeve, and the pressure-applied crushing teeth reduce the contact area between the rolling block and the rare earth ore, increase the pressure, and perform a preliminary grinding and crushing function on the rare earth ore. The telescopic rod is telescopic in the telescopic sleeve. The elastic gasket plays a role of pressing the rolling block downward and performing a buffering function. The screen screens the crushed rare earth ore so that larger particles of ore continue to be ground and crushed into small particles, thereby avoiding wear on the crushing device. The supporting inner rod and the supporting outer rod cooperate with each other. When vibrated, the spring hinged rod contracts and rotates so that the supporting inner rod moves inside the supporting outer rod, causing the screen to shake, so that the rare earth ore can be better screened, thereby solving the problem that some large particles of rare earth ore will cause severe wear inside the rare earth ore crushing device during crushing, thereby affecting its service life and having poor practicality.

[0018] 2. The present invention provides a rare earth ore crushing device. By installing a rolling and screening device, the screened rare earth ore falls onto a conveyor belt. Motor 2 drives the active rotating roller and the conveyor belt to rotate and transport the rare earth ore to the crushing device. The side baffles and the transverse baffles block the rare earth ore to prevent it from rolling down. The bottom limit block limits the side baffles to limit its rotation angle. The dust suppression plate serves to install a pump, and the pump water is provided to the spray pipe. The spray pipe sprays the rare earth ore on the conveyor belt to moisten and reduce dust. The fan plays the role of blowing away the water mist to make the dust reduction range wider and keep motor 3 dry, thereby solving the problem that the existing rare earth ore crushing device generates a large amount of dust when crushing the rare earth ore.

[0019] 3. The present invention provides a rare earth ore crushing device. By installing the crushing device, the motor drives the crushing rotating rod and the crushing knife to rotate, and the rare earth ore entering the crushing cylinder from the feed port is crushed. The arc screen plays a filtering role to filter the rare earth ore that is not completely crushed. The rotating sleeve, the extrusion support rod and the fixed seat cooperate with each other to play a buffering and shock absorbing role. The magnetic balls are arranged in the positive pole-positive pole-negative pole-negative pole sequence inside the fixed seat. The principle of like poles repel each other and opposite poles attract each other is used to make the rotating support balls support the arc screen upward and play a buffering and shock absorbing role. The connecting spring rod plays a role of connecting the magnetic balls. The rotating support rod rotates with the crushing rotating rod to push the arc screen to rotate to better filter the rare earth ore. The small grinding head rotates with the crushing rotating rod to further crush the intercepted rare earth ore, so as to solve the problem that filtering and screening are required after crushing and the crushing efficiency is low, so as to achieve the effect of filtering while crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the structural cross section of the present invention;

[0022] Figure 3 It is a cross-sectional schematic diagram of the structural rolling block of the present invention;

[0023] Figure 4 It is an enlarged schematic diagram of structure A of the present invention;

[0024] Figure 5 It is an enlarged schematic diagram of structure B of the present invention;

[0025] Figure 6 It is a cross-sectional schematic diagram of the structural conveyor belt of the present invention.

[0026] In the figure: 1. Crushing device body; 11. Device mounting bracket; 2. Rolling and screening device; 21. Crushing frame; 22. Motor; 221. Rotating shaft; 222. Fixed mounting sleeve; 2221. Telescopic sleeve; 2222. Elastic gasket; 23. Rolling block; 231. Pressure crushing teeth; 232. Shock-absorbing connecting rod; 233. Telescopic rod; 24. Screen; 241. Support inner rod; 242. Support outer rod; 243. Spring hinge rod; 25. Motor 2; 251. Active rotating roller; 252. Conveyor belt; 253. Side baffle; 2531. Bottom limit block; 254, horizontal baffle; 26, pump; 261, spray pipe; 262, fan; 263, dust suppression plate; 2631, air inlet net; 3, crushing device; 31, crushing cylinder; 311, feed port; 32, motor three; 321, crushing rotating rod; 322, crushing knife; 323, small grinding head; 324, rotating support rod; 33, arc screen; 331, rotating sleeve; 332, extrusion support rod; 333, fixed seat; 3331, rotating support ball; 3332, magnet ball; 3333, connecting spring rod; 334, support plate; 335, discharge port. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with embodiments:

[0028] Example 1

[0029] like Figure 1-6As shown, the present invention provides a rare earth ore crushing device, including a crushing device body 1, the crushing device body 1 includes a device mounting bracket 11, a rolling screening device 2 is arranged at the upper end of the device mounting bracket 11, a crushing device 3 is arranged below the rolling screening device 2, the rolling screening device 2 includes a crushing frame 21, a motor 22, a rolling block 23, a screen 24, a motor 25 and a pump 26, the lower surface of the crushing frame 21 is fixedly connected to the upper surface of the device mounting bracket 11, the crushing device 3 includes a crushing barrel 31, a motor 32 and an arc screen 33, the upper surface of the crushing barrel 31 is provided with a feed port 311, the outer surface of the motor 22 is fixedly connected to the outer surface of the crushing frame 21, and the output shaft of the motor 22 is fixedly installed with a rotating shaft 22 1. One end of the rotating shaft 221 is movably connected to the inner surface of the crushing frame 21, a fixed mounting sleeve 222 is fixedly installed on the outer surface of the rotating shaft 221, a telescopic sleeve 2221 is fixedly installed on the outer surface of the fixed mounting sleeve 222, an elastic gasket 2222 is fixedly installed on the inner wall of the telescopic sleeve 2221, shock-absorbing connecting rods 232 are hinged at both ends of the rolling block 23, one end of the shock-absorbing connecting rod 232 is hinged to the outer surface of the fixed mounting sleeve 222, a telescopic rod 233 is fixedly installed on one side surface of the rolling block 23, the outer surface of the telescopic rod 233 is slidably connected to the inner surface of the telescopic sleeve 2221, the upper end of the telescopic rod 233 is in contact with one end of the elastic gasket 2222, and the other side surface of the rolling block 23 is evenly distributed with pressure crushing teeth 231.

[0030] In this embodiment, rare earth ore is put into the crushing frame 21, and the motor 22 drives the rotating shaft 221 and the fixed mounting sleeve 222 to rotate. The shock-absorbing connecting rod 232 connects the crushing block 23 and the fixed mounting sleeve 222 and performs buffering and shock-absorbing. The crushing tooth 231 applies pressure to reduce the contact area between the crushing block 23 and the rare earth ore, increase the pressure, and perform preliminary grinding and crushing of the rare earth ore. The telescopic rod 233 retracts the elastic gasket 2222 inside the telescopic sleeve 2221 to squeeze the crushing block 23 downward and perform buffering.

[0031] Example 2

[0032] like Figure 1-6As shown, on the basis of Example 1, the present invention provides a technical solution: the side surface of the screen 24 is slidably connected to the inner surface of the crushing frame 21, the upper surface of the screen 24 is in contact with the lower surface of the pressure crushing tooth 231, and the two sides of the lower surface of the screen 24 are fixedly installed with supporting inner rods 241, and the outer side of the supporting inner rod 241 is provided with a supporting outer rod 242, and the lower end of the supporting outer rod 242 is fixedly connected to the inner wall of the crushing frame 21, and the outer surface of the supporting inner rod 241 is movably connected to the inner surface of the supporting outer rod 242, and the lower end of the supporting inner rod 241 is hinged with a spring hinged rod 243, and the lower end of the spring hinged rod 243 is hinged to the inner wall of the supporting outer rod 242, and the motor 2 The outer surface of motor 25 is fixedly connected to the outer surface of the device mounting bracket 11, the output shaft of motor 25 is fixedly installed with an active rotating roller 251, one end of the active rotating roller 251 is movably connected to the inner side wall of the device mounting bracket 11, a driven rotating roller is provided on one side of the active rotating roller 251, a conveyor belt 252 is movably installed on the outer surface of the active rotating roller 251, side baffles 253 are fixedly installed on both sides of the outer surface of the conveyor belt 252, a bottom limit block 2531 is fixedly installed on the lower surface of the side baffle 253, a transverse baffle 254 is hinged between the side baffles 253, and the lower surface of the transverse baffle 254 is in contact with the upper surface of the bottom limit block 2531.

[0033] In this embodiment, the screen 24 screens the crushed rare earth ore so that larger particles of ore continue to be ground and crushed into small particles, avoiding wear on the crushing device. The support inner rod 241 and the support outer rod 242 cooperate with each other. When vibrated, the spring hinged rod 243 contracts and rotates, causing the support inner rod 241 to move inside the support outer rod 242, causing the screen 24 to shake to better screen the rare earth ore.

[0034] Example 3

[0035] like Figure 1-6As shown, on the basis of Example 1, the present invention provides a technical solution: a dust suppression plate 263 is fixedly installed on the lower surface of the pump 26, and the two sides of the dust suppression plate 263 are respectively fixedly connected to the outer surfaces of the crushing frame 21 and the crushing cylinder 31, and an air inlet net 2631 is fixedly installed on the upper surface of the dust suppression plate 263, and a spray pipe 261 is fixedly installed on the top of the inner surface of the dust suppression plate 263, and the inner wall of the spray pipe 261 is fixedly connected to the water outlet pipe of the pump 26, and a spray head is fixedly installed on the lower surface of the spray pipe 261, and the side wall of the dust suppression plate 263 is fixedly installed. A fan 262 is installed, the lower surface of the motor three 32 is fixedly connected to the upper surface of the crushing cylinder 31, the output shaft of the motor three 32 is fixedly installed with a crushing rotating rod 321, the outer surface of the crushing rotating rod 321 is fixedly installed with a crushing knife 322, a small grinding head 323 and a rotating support rod 324, the lower surface of the small grinding head 323 is in contact with the upper surface of the arc-shaped screen 33, one end of the rotating support rod 324 is slidably connected to the upper surface of the arc-shaped screen 33, and the upper surface of the arc-shaped screen 33 is provided with a slide groove adapted to the rotating support rod 324.

[0036] In this embodiment, the screened rare earth ore falls onto the conveyor belt 252, and the motor 25 works to drive the active rotating roller 251 and the conveyor belt 252 to rotate and transport the rare earth ore to the crushing device 3. The side baffle 253 and the transverse baffle 254 block the rare earth ore to prevent it from rolling down, and the bottom limit block 2531 limits the side baffle 253 to limit its rotation angle. The dust suppression plate 263 serves to install the pump 26, and the pump 26 pumps water to the spray pipe 261. The spray pipe 261 sprays the rare earth ore on the conveyor belt 252 to moisten and reduce dust. The fan 262 plays the role of blowing away the water mist to expand the range of dust reduction and keep the motor 3 32 dry.

[0037] Example 4

[0038] like Figure 1-6 As shown, on the basis of Example 1, the present invention provides a technical solution: a rotating sleeve 331 is fixedly installed on the lower surface of the arc screen 33, and the lower end of the rotating sleeve 331 is sleeved with an extrusion support rod 332, and a fixed seat 333 is provided at the lower end of the extrusion support rod 332, and a support plate 334 is fixedly installed on the lower surface of the fixed seat 333, and the side surface of the support plate 334 is fixedly connected to the bottom inner wall of the crushing barrel 31, and discharge ports 335 are provided on both sides of the support plate 334, and a rotating support ball 3331 is provided in the middle of the fixed seat 333, and the upper surface of the rotating support ball 3331 is sleeved with the lower surface of the extrusion support rod 332, and magnet balls 3332 are hinged at the bottom of both sides of the rotating support ball 3331, and connecting spring rods 3333 are fixedly installed between the magnet balls 3332.

[0039] In this embodiment, the motor 32 drives the crushing rotating rod 321 and the crushing knife 322 to rotate, and the rare earth ore entering the crushing cylinder 31 from the feed port 311 is crushed. The arc screen 33 plays a filtering role and filters the rare earth ore that is not completely crushed. The rotating sleeve 331, the extrusion support rod 332 and the fixed seat 333 cooperate with each other to play a role of buffering and shock absorption. The magnetic balls 3332 are arranged in the order of positive pole-positive pole-negative pole-negative pole inside the fixed seat 333. The principle of like poles repel each other and opposite poles attract each other is used to make the rotating support balls 3331 support the arc screen 33 upward and play a role of buffering and shock absorption. The connecting spring rod 333 plays a role of connecting the magnetic balls 3332. The rotating support rod 324 rotates with the crushing rotating rod 321 to push the arc screen 33 to rotate better to filter the rare earth ore. The small grinding head 323 rotates with the crushing rotating rod 321 to further crush the intercepted rare earth ore.

[0040] The following is a detailed description of the working principle of the rare earth ore crushing device.

[0041] like Figure 1-6 As shown, first, the rare earth ore is put into the crushing frame 21, and the motor 22 works to drive the rotating shaft 221 and the fixed installation sleeve 222 to rotate. The shock-absorbing connecting rod 232 connects the rolling block 23 and the fixed installation sleeve 222 and performs a buffering and shock-absorbing function. The rolling block 23 rotates with the fixed installation sleeve 222, and the pressure-applying crushing teeth 231 reduce the contact area between the rolling block 23 and the rare earth ore to increase the pressure to perform a preliminary grinding and crushing function on the rare earth ore. Then, the screen 24 screens the ground rare earth ore so that larger particles of ore continue to be ground and crushed into small particles. The screened rare earth ore falls onto the conveyor belt 252, and the motor 25 works to drive the active rotating roller 251 and the conveyor belt 252 The rare earth ore is transported to the crushing device 3 by rotation, the side baffle 253 and the horizontal baffle 254 block the rare earth ore to prevent it from rolling, the bottom limit block 2531 limits the side baffle 253 to limit its rotation angle, the dust suppression plate 263 serves to install the pump 26, the pump 26 pumps water to the spray pipe 261, the spray pipe 261 sprays the rare earth ore on the conveyor belt 252 to moisten it and reduce dust, finally, the motor 32 works to drive the crushing rotating rod 321 and the crushing knife 322 to rotate, and the rare earth ore entering the crushing cylinder 31 from the feed port 311 is crushed, and the arc screen 33 plays a filtering role to filter the rare earth ore that is not completely crushed.

[0042] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A rare earth ore crushing device, comprising a crushing device body (1), wherein the crushing device body (1) comprises a device mounting bracket (11), characterized in that: A rolling screening device (2) is arranged at the upper end of the device mounting bracket (11), and a crushing device (3) is arranged below the rolling screening device (2). The rolling screening device (2) comprises a crushing frame (21), a motor (22), a rolling block (23), a screen (24), a second motor (25) and a pump (26). The lower surface of the crushing frame (21) is fixedly connected to the upper surface of the device mounting bracket (11). The crushing device (3) comprises a crushing barrel (31), a third motor (32) and an arc-shaped screen (33). The upper surface of the crushing barrel (31) is provided with a feed port (311); The outer surface of the motor (22) is fixedly connected to the outer surface of the crushing frame (21); the output shaft of the motor (22) is fixedly mounted with a rotating shaft (221); one end of the rotating shaft (221) is movably connected to the inner surface of the crushing frame (21); the outer surface of the rotating shaft (221) is fixedly mounted with a fixed mounting sleeve (222); the outer surface of the fixed mounting sleeve (222) is fixedly mounted with a telescopic sleeve (2221); and the inner wall of the telescopic sleeve (2221) is fixedly mounted with an elastic gasket (2222); Shock-absorbing connecting rods (232) are hingedly connected at both ends of the rolling block (23), one end of the shock-absorbing connecting rod (232) is hingedly connected to the outer surface of the fixed installation sleeve (222), a telescopic rod (233) is fixedly installed on one side surface of the rolling block (23), the outer surface of the telescopic rod (233) is slidably connected to the inner surface of the telescopic sleeve (2221), the upper end of the telescopic rod (233) is in contact with one end of the elastic gasket (2222), and the other side surface of the rolling block (23) is evenly distributed with pressure-applying crushing teeth (231); The side surface of the screen (24) is slidably connected to the inner surface of the crushing frame (21); the upper surface of the screen (24) is in contact with the lower surface of the pressure crushing teeth (231); inner support rods (241) are fixedly installed on both sides of the lower surface of the screen (24); an outer support rod (242) is arranged on the outer side of the inner support rod (241); the lower end of the outer support rod (242) is fixedly connected to the inner wall of the crushing frame (21); the outer surface of the inner support rod (241) is movably connected to the inner surface of the outer support rod (242); the lower end of the inner support rod (241) is hinged with a spring hinge rod (243); the lower end of the spring hinge rod (243) is hinged to the inner wall of the outer support rod (242); The outer surface of the second motor (25) is fixedly connected to the outer surface of the device mounting bracket (11); the output shaft of the second motor (25) is fixedly mounted with an active rotating roller (251); one end of the active rotating roller (251) is movably connected to the inner side wall of the device mounting bracket (11); a driven rotating roller is arranged on one side of the active rotating roller (251); a conveyor belt (252) is movably mounted on the outer surface of the active rotating roller (251); side baffles (253) are fixedly mounted on both sides of the outer surface of the conveyor belt (252); a bottom limit block (2531) is fixedly mounted on the lower surface of the side baffles (253); a transverse baffle (254) is hinged between the side baffles (253); the lower surface of the transverse baffle (254) is in contact with the upper surface of the bottom limit block (2531); A dust suppression plate (263) is fixedly mounted on the lower surface of the pump (26), and the two sides of the dust suppression plate (263) are respectively fixedly connected to the outer surfaces of the crushing frame (21) and the crushing cylinder (31), and an air inlet net (2631) is fixedly mounted on the upper surface of the dust suppression plate (263). A spray pipe (261) is fixedly mounted on the top of the inner surface of the dust suppression plate (263), and the inner wall of the spray pipe (261) is fixedly connected to the water outlet pipe of the pump (26), and a spray head is fixedly mounted on the lower surface of the spray pipe (261). A fan (262) is fixedly mounted on the side wall of the dust suppression plate (263); The lower surface of the motor three (32) is fixedly connected to the upper surface of the crushing cylinder (31); the output shaft of the motor three (32) is fixedly installed with a crushing rotating rod (321); the outer surface of the crushing rotating rod (321) is fixedly installed with a crushing knife (322), a small grinding head (323) and a rotating support rod (324); the lower surface of the small grinding head (323) is in contact with the upper surface of the arc-shaped screen (33); one end of the rotating support rod (324) is slidably connected to the upper surface of the arc-shaped screen (33); and the upper surface of the arc-shaped screen (33) is provided with a sliding groove adapted to the rotating support rod (324); A rotating sleeve (331) is fixedly mounted on the lower surface of the arc-shaped screen (33), an extrusion support rod (332) is sleeved on the lower end of the rotating sleeve (331), a fixing seat (333) is provided at the lower end of the extrusion support rod (332), a supporting plate (334) is fixedly mounted on the lower surface of the fixing seat (333), a side surface of the supporting plate (334) is fixedly connected to the bottom inner wall of the crushing cylinder (31), and discharge ports (335) are provided on both sides of the supporting plate (334); A rotating support ball (3331) is arranged in the middle of the fixed seat (333), the upper surface of the rotating support ball (3331) is sleeved with the lower surface of the extrusion support rod (332), and magnet balls (3332) are hinged at the bottom of both sides of the rotating support ball (3331), and connecting spring rods (3333) are fixedly installed between the magnet balls (3332).

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