Waste grinding and screening device and process for rare earth production

Abstract

The invention relates to the technical field of rare earth production, in particular to a waste grinding and screening device and process for rare earth production. The waste grinding and screening device comprises a main body, a feeding hopper is installed on the main body, a grinding mechanism and a screening mechanism are further installed in the main body, and a collecting mechanism is installed between the grinding mechanism and the screening mechanism; the collecting mechanism comprises a collecting hopper, the collecting hopper is fixedly connected into the main body, a fan is further installed on the main body, the air outlet end of the fan is fixedly connected with an air outlet pipe, the end, away from the fan, of the air outlet pipe is located in the collecting hopper, and an electric heating resistance wire is fixedly connected to the air outlet pipe. The sodium phosphate drying device has the effects that ground sodium phosphate is dried, and then the probability that wet sodium phosphate particles block a screening net is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rare earth production, and in particular to a waste grinding and screening device and process for rare earth production. Background Art

[0002] In the extraction process of rare earth chloride, the alkali fusion method is generally used to extract from monazite. A large amount of waste will be generated during the extraction by the alkali fusion method. The main component of the waste is sodium phosphate. In order to reduce production costs, sodium phosphate is often reused. When reusing sodium phosphate, a centrifuge is often used to remove the moisture in sodium phosphate. After the moisture is removed, the sodium phosphate forms lumps of different shapes and sizes. Before use, the lumpy sodium phosphate needs to be crushed to improve its reaction efficiency. After grinding and crushing, the ground sodium phosphate needs to be screened to further ensure the particle size of sodium phosphate. However, due to the strong hygroscopicity of sodium phosphate, the sodium phosphate particles will block the mesh holes of the screening net due to moisture. Summary of the Invention

[0003] In order to facilitate the crushing of lumpy sodium phosphate and reduce the probability of wet sodium phosphate particles blocking the screening net, the present application provides a waste grinding and screening device and process for rare earth production.

[0004] In a first aspect, a waste grinding and screening device for rare earth production provided by the present application adopts the following technical solutions: A waste grinding and screening device for rare earth production includes a main body. A feed hopper is installed on the main body. A grinding mechanism and a screening mechanism are also installed inside the main body. A collection mechanism is installed between the grinding mechanism and the screening mechanism. The collection mechanism includes a collection hopper. The collection hopper is fixedly connected inside the main body. A blower is also installed on the main body. The air outlet end of the blower is fixedly connected to an air outlet pipe. The end of the air outlet pipe far from the blower is located in the collection hopper. An electric heating resistance wire is fixedly connected to the air outlet pipe.

[0005] By adopting the above technical solutions, the ground sodium phosphate first falls into the collection hopper, and then enters the screening mechanism through the collection hopper for screening. When it enters the collection hopper, the blower is started. The blower blows air into the collection hopper through the air outlet pipe. At the same time, the electric heating resistance wire heats the air in the air outlet pipe. The heated air dries the ground sodium phosphate, thereby reducing the probability of wet sodium phosphate particles blocking the screening net.

[0006] Optionally, the grinding mechanism includes an upper grinding plate which is slidably connected to the inside of the main body through a sliding component. A lower grinding plate is also mounted on the main body through an adjusting component, and a power component is further mounted on the main body. The power component is connected to the upper grinding plate.

[0007] By adopting the above technical solution, when grinding the agglomerated sodium phosphate, manually feed the agglomerated sodium phosphate into the feed hopper, and then it enters between the upper grinding plate and the lower grinding plate through the feed hopper. Then the power component drives the upper grinding plate to reciprocate, grinding the agglomerated sodium phosphate.

[0008] Optionally, a first sliding groove is formed in the top wall of the main body, and a second sliding groove is formed in the side wall of the first sliding groove. The sliding component includes an auxiliary block which is slidably connected in the first sliding groove. Auxiliary wheels are rotatably connected to both ends of the auxiliary block, and the auxiliary wheels are rotatably connected in the second sliding groove. One end of the upper grinding plate away from the lower grinding plate is fixedly connected with a connecting rod. The connecting rod passes through one end of the auxiliary block and is fixedly connected with a second connecting ring. One end of the second connecting ring close to the main body is fixedly connected with a second spring, and the second spring is fixedly connected with the main body.

[0009] By adopting the above technical solution, when grinding the agglomerated sodium phosphate, the power component drives the upper grinding plate to reciprocate. Since the upper grinding plate is inclined, when reciprocating, the upper grinding plate will move back and forth in the directions away from and close to the lower grinding plate. When the upper grinding plate moves away from the lower grinding plate, the upper grinding plate drives the connecting plate to slide in the opposite direction away from the lower grinding plate, and at the same time drives the auxiliary block to slide. At this time, the setting of the auxiliary wheels makes the sliding of the upper grinding plate smoother. At the same time, the connecting plate drives the second spring to stretch through the second connecting ring, further making the sliding of the upper grinding plate smoother and more stable, improving the grinding effect.

[0010] Optionally, the power component includes a motor which is mounted on the main body. A first rotating shaft is fixedly connected to the output shaft of the motor, and a first cam is fixed on the first rotating shaft. A first sliding rod is slidably connected to the side wall of the main body. One end of the first sliding rod located inside the main body is fixedly connected with the upper grinding plate. The end of the first sliding rod away from the upper grinding plate abuts against the first cam. A first connecting ring is fixedly connected to the side wall of the first sliding rod. One end of the first connecting ring close to the side wall of the main body is fixedly connected with a first spring, and the first spring is fixedly connected with the main body.

[0011] By adopting the above technical solution, when grinding the lumpy sodium phosphate, the motor is started, the motor drives the first rotating shaft to rotate, the first rotating shaft drives the first cam to rotate, the first cam cooperates with the first spring to drive the first sliding rod to reciprocate, the first sliding rod drives the upper grinding plate to reciprocate, and the upper grinding plate cooperates with the lower grinding plate to grind the lumpy sodium phosphate.

[0012] Optionally, the adjusting assembly includes a fixed block fixedly connected to the main body. A through third sliding groove is formed in the end face of the fixed block away from the main body. A slider is slidably connected in the third sliding groove. The slider is fixedly connected to the lower grinding plate. One end of the lower grinding plate close to the fixed block is also fixedly connected with a first support rod. The end of the first support rod away from the lower grinding plate is slidably connected in the third sliding groove. An adjusting lead screw is rotatably connected to the fixed block. A first lead screw nut is arranged in the slider, and a second lead screw nut is arranged in the first support rod. Both the first lead screw nut and the second lead screw nut cooperate with the adjusting lead screw.

[0013] By adopting the above technical solution, for different processing requirements, the requirements for the particle size of sodium phosphate are also different. Therefore, the distance between the upper grinding plate and the lower grinding plate needs to be adjustable. When adjusting the distance between the upper grinding plate and the lower grinding plate, the adjusting lead screw is manually rotated. The adjusting lead screw drives the slider and the first support rod to slide. The slider and the first support rod jointly drive the lower grinding plate to slide, thereby realizing the adjustment of the distance between the upper grinding plate and the lower grinding plate, enabling the grinding mechanism to grind sodium phosphate with different particle sizes and improving the applicability of the entire device.

[0014] Optionally, the collecting mechanism further includes a knocking assembly. The knocking assembly includes a third sliding rod slidably connected to the main body. One end of the third sliding rod located inside the main body is fixedly connected with a knocking block. A third connecting ring is fixedly connected to the side wall of the third sliding rod. A third spring is fixedly connected to the side wall of the third connecting ring close to the main body. The third spring is fixedly connected to the main body. A third cam is also fixedly connected to the first rotating shaft. One end of the third sliding rod away from the knocking block abuts against the third cam.

[0015] By adopting the above technical solution, some of the ground sodium phosphate particles will adhere to the inner side wall of the collection hopper, which will cause the collection hopper to become blocked after long-term accumulation. When the motor is started, the motor drives the first rotating shaft to rotate, the first rotating shaft drives the third cam to rotate, the third cam cooperates with the third spring to drive the third sliding rod to reciprocate, the third sliding rod drives the knocking block to reciprocate, and the knocking block knocks on the side wall of the collection hopper, thereby reducing the probability of the collection hopper being blocked by sodium phosphate particles; and by using one motor to achieve both grinding and knocking actions at the same time, combining grinding and knocking together, only need to turn on the switch of the motor during use, thereby simplifying the operation steps and improving the production efficiency.

[0016] Optionally, the screening mechanism includes a second support rod, the second support rod is fixedly connected to the bottom wall inside the main body, one end of the second support rod close to the upper grinding plate is slidably connected with an umbrella-shaped screening net through a vibration assembly, a through fourth chute is opened on the end face of the second support rod close to the umbrella-shaped screening net, the vibration assembly includes a second sliding rod, the second sliding rod is slidably connected in the fourth chute and is fixedly connected with the umbrella-shaped screening net, a fourth connecting ring is fixedly connected to the side wall of the second sliding rod, one end of the fourth connecting ring close to the umbrella-shaped screening net is fixedly connected with a fourth spring, the fourth spring is fixedly connected with the main body, and a transmission mechanism is further installed on the main body, and the transmission mechanism is connected with the second sliding rod.

[0017] By adopting the above technical solution, the setting of the umbrella-shaped screening net realizes the screening of the ground sodium phosphate, and at the same time, the setting of the second sliding rod and the fourth spring realizes the vibration of the umbrella-shaped screening net, thereby reducing the probability of the umbrella-shaped screening net being blocked by sodium phosphate particles with larger sizes.

[0018] Optionally, the transmission mechanism includes a second rotating shaft, the second rotating shaft is rotatably connected to the side wall of the main body close to the motor, a first bevel gear is fixedly connected to the first rotating shaft, a second bevel gear is fixedly connected to the second rotating shaft, the first bevel gear meshes with the second bevel gear, a first sprocket is further fixedly connected to the second rotating shaft, an installation block is fixedly connected to the bottom wall of the main body, a third rotating shaft is rotatably connected to the installation block, a second sprocket is fixedly connected to the third rotating shaft, a chain is rotatably connected to the first sprocket and the second sprocket together, and a second cam is further fixedly connected to the third rotating shaft, and the second cam abuts against one end of the second sliding rod away from the umbrella-shaped screening net.

[0019] By adopting the above technical solution, when the motor starts, the motor drives the first rotating shaft to rotate, the first rotating shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the second rotating shaft to rotate, the second rotating shaft drives the first sprocket to rotate, the first sprocket drives the second sprocket to rotate through a chain, the second sprocket drives the third rotating shaft to rotate, the third rotating shaft drives the second cam to rotate, and the second cam cooperates with the fourth spring to drive the second sliding rod to move reciprocally, and the second sliding rod drives the umbrella-shaped screening net to vibrate; the transmission mechanism combines the vibration of the umbrella-shaped screening net with the grinding of the grinding mechanism and the knocking of the knocking component, and realizes the linkage and synchronization of grinding, knocking and screening vibration through one power source, thereby simplifying the operation steps and improving the working efficiency of the whole equipment.

[0020] Optionally, a recycling mechanism is further installed in the main body. The recycling mechanism includes a collecting ring, the collecting ring is installed in the main body and is inclined, the collecting ring is located at one end of the umbrella-shaped screening net away from the collecting hopper, a collecting pipe is further installed on the main body, one end of the collecting pipe located inside the main body is located at one end of the collecting ring away from the umbrella-shaped screening net, a screw conveyor is further installed on the main body, one end of the collecting pipe away from the collecting ring is located in the screw conveyor, and the discharging port end of the screw conveyor is fixedly connected with a feeding pipe, and the discharging end of the feeding pipe is located at one end of the feeding hopper away from the main body.

[0021] By adopting the above technical solution, the larger-grained sodium phosphate after screening slides down from the umbrella-shaped screening net into the collecting ring. Since the collecting ring is inclined, the sliding sodium phosphate gathers towards the end of the collecting ring away from the umbrella-shaped screening net, and then the gathered sodium phosphate enters the screw conveyor through the collecting pipe, and then the screw conveyor re-adds the sodium phosphate with unqualified particle size into the feeding hopper through the feeding pipe, thereby realizing the automatic recycling of the sodium phosphate with unqualified particle size.

[0022] In the second aspect, a waste grinding and screening process for rare earth production provided by the present application adopts the following technical solution: a waste grinding and screening process for rare earth production includes the following steps: Step 1: First, knock the massive sodium phosphate into small pieces, and then add the small pieces of sodium phosphate into the feeding hopper. Step 2: Start the motor. The motor drives the first rotating shaft to rotate, the first rotating shaft drives the first cam to rotate, the first cam cooperates with the first spring to drive the first sliding rod to move reciprocally, and the first sliding rod drives the upper grinding plate to move reciprocally. The upper grinding plate and the lower grinding plate cooperate to grind the massive sodium phosphate. Step 3: Meanwhile, the first rotating shaft drives the third cam to rotate. The third cam and the third spring cooperate with each other to drive the third sliding rod to move reciprocally. The third sliding rod drives the knocking block to move reciprocally, and the knocking block knocks on the side wall of the collecting hopper. Step 4: And the first rotating shaft drives the first bevel gear to rotate. The first bevel gear drives the second bevel gear to rotate. The second bevel gear drives the second rotating shaft to rotate. The second rotating shaft drives the first sprocket to rotate. The first sprocket drives the second sprocket to rotate through a chain. The second sprocket drives the third rotating shaft to rotate. The third rotating shaft drives the second cam to rotate. The second cam and the fourth spring cooperate with each other to drive the second sliding rod to move reciprocally. The second sliding rod drives the umbrella-shaped screening net to vibrate. Step 5: At this time, start the auger elevator. The relatively large-grained sodium phosphate after screening slides down from the umbrella-shaped screening net into the collecting ring, and then the auger elevator re-feeds the relatively large-grained sodium phosphate into the feed hopper for grinding.

[0023] In summary, the present application includes the following beneficial technical effects: 1. The ground sodium phosphate first falls into the collecting hopper, and then enters the screening mechanism through the collecting hopper for screening. When it enters the collecting hopper, the fan starts. The fan blows air into the collecting hopper through the air outlet pipe. At the same time, the electric heating resistance wire heats the air in the air outlet pipe. The heated air dries the ground sodium phosphate, thereby reducing the probability of the wet sodium phosphate particles clogging the screening net. 2. The transmission mechanism combines the vibration of the umbrella-shaped screening net with the grinding of the grinding mechanism and the knocking of the knocking assembly. Through one power source, the linkage and synchronization of grinding, knocking and screening vibration are realized, thereby simplifying the operation steps and improving the working efficiency of the entire equipment. 3. For different processing requirements, the requirements for the particle size of sodium phosphate are also different. Therefore, it is necessary to adjust the distance between the upper grinding plate and the lower grinding plate. When adjusting the distance between the upper grinding plate and the lower grinding plate, manually rotate the adjusting screw rod. The adjusting screw rod drives the slider and the first support rod to slide. The slider and the first support rod jointly drive the lower grinding plate to slide, thereby realizing the adjustment of the distance between the upper grinding plate and the lower grinding plate, enabling the grinding mechanism to grind sodium phosphate with different particle sizes and improving the applicability of the entire equipment. 4. The relatively large-grained sodium phosphate after screening slides down from the umbrella-shaped screening net into the collecting ring. Since the collecting ring is inclined, the sliding sodium phosphate gathers towards the end of the collecting ring away from the umbrella-shaped screening net. Then the gathered sodium phosphate enters the auger elevator through the collecting pipe. Then the auger elevator re-feeds the sodium phosphate with unqualified particle size into the feed hopper through the blanking pipe, thereby realizing the automatic recovery of the sodium phosphate with unqualified particle size. Description of the Drawings

[0024] Figure 1 This is a schematic structural diagram of a waste grinding and screening device for rare earth production in an embodiment of the present application; Figure 2 For the present application Figure 1 An enlarged view of part A; Figure 3 For the present application Figure 1 An enlarged view of part B; Figure 4 This is a schematic structural diagram of a screening mechanism in an embodiment of the present application; Figure 5 This is a schematic structural diagram of a recycling mechanism in an embodiment of the present application.

[0025] Reference numerals: 1, main body; 11, first chute; 12, second chute; 2, feed hopper; 3, grinding mechanism; 31, upper grinding plate; 32, lower grinding plate; 33, power assembly; 331, mounting plate; 332, motor; 333, first rotating shaft; 334, first cam; 335, first sliding rod; 336, first connecting ring; 337, first spring; 34, sliding assembly; 341, connecting rod; 342, auxiliary block; 343, auxiliary wheel; 344, second connecting ring; 345, second spring; 35, adjusting assembly; 351, fixing block; 352, first support rod; 353, slider; 354, adjusting lead screw; 355, third chute; 4, collection mechanism; 41, collection hopper; 42, fan; 43, air outlet pipe; 44, electric heating resistance wire; 45, knocking assembly; 451, third sliding rod; 452, knocking block; 453, third connecting ring; 454, third spring; 455, third cam; 5, screening mechanism; 51, second support rod; 511, fourth chute; 52, umbrella-shaped screening mesh; 53, vibration assembly; 531, second sliding rod; 532, fourth connecting ring; 533, fourth spring; 6, transmission mechanism; 61, second rotating shaft; 62, first bevel gear; 63, second bevel gear; 64, first sprocket; 65, mounting block; 66, third rotating shaft; 67, second sprocket; 68, chain; 69, second cam; 7, recycling mechanism; 71, collection ring; 72, collection pipe; 73, screw conveyor elevator; 74, blanking pipe; 8, collection box. Detailed implementation manners

[0026] The following further elaborates on the present application in conjunction with the attached Figures 1-5 for a more detailed description of the present application.

[0027] An embodiment of the present application discloses a waste grinding and screening device for rare earth production.

[0028] Refer to Figure 1, A waste grinding and screening device for rare earth production, including a main body 1, the main body 1 is installed on the ground, a feed hopper 2 is fixedly connected to the end face of the main body 1 away from the ground, and a grinding mechanism 3 for grinding lumpy sodium phosphate is also installed in the main body 1. A collecting mechanism 4 for collecting the ground sodium phosphate is installed at one end of the grinding mechanism 3 away from the feed hopper 2. A screening mechanism 5 for screening the ground sodium phosphate is installed at one end of the collecting mechanism 4 away from the grinding mechanism 3. A recycling mechanism 7 for recycling the unqualified sodium phosphate with larger particles after screening and a collecting box 8 for collecting the qualified sodium phosphate after screening are also installed on the main body 1.

[0029] When grinding and screening lumpy sodium phosphate, first manually add the lumpy sodium phosphate into the feed hopper 2, and then the lumpy sodium phosphate enters the grinding mechanism 3 through the feed hopper 2 for grinding. After grinding, it is collected and dried by the collecting mechanism 4 and then enters the screening mechanism 5 for screening. The sodium phosphate meeting the particle size standard falls into the collecting box 8 through the screening mechanism 5 for collection, and the sodium phosphate not meeting the particle size standard is recycled by the recycling mechanism 7 for re-grinding.

[0030] Reference Figure 1 and Figure 2 , The grinding mechanism 3 includes an upper grinding plate 31, the upper grinding plate 31 is slidably connected in the main body 1 through a sliding component 34, and a lower grinding plate 32 is also slidably connected to the main body 1 through an adjusting component 35.

[0031] A first sliding groove 11 is opened on the top wall of the main body 1, and a second sliding groove 12 is opened on the side wall of the first sliding groove 11. The sliding component 34 includes an auxiliary block 342, the auxiliary block 342 is slidably connected in the first sliding groove 11, two auxiliary wheels 343 are rotatably connected to the side walls on both sides of the auxiliary block 342, the auxiliary wheels 343 are all rotatably connected in the second sliding groove 12. One end of the upper grinding plate 31 away from the lower grinding plate 32 is fixedly connected with a connecting rod 341, the end of the connecting rod 341 away from the upper grinding plate 31 passes through the auxiliary block 342 and is fixedly connected with a second connecting ring 344, and a second spring 345 is fixedly connected to the end face of the second connecting ring 344 close to the auxiliary block 342. The end of the second spring 345 away from the second connecting ring 344 is fixedly connected with the auxiliary block 342.

[0032] When grinding the phosphate sodium in chunks, the upper grinding plate 31 needs to reciprocate. Since the upper grinding plate 31 is inclined, when reciprocating, the upper grinding plate 31 will reciprocate in the directions away from and towards the lower grinding plate 32. When the upper grinding plate 31 moves away from the lower grinding plate 32, the upper grinding plate 31 drives the connecting plate to slide in the opposite direction away from the lower grinding plate 32, and at the same time drives the auxiliary block 342 to slide. At this time, the setting of the auxiliary wheel 343 makes the sliding of the upper grinding plate 31 smoother. At the same time, the connecting rod 341 drives the second spring 345 to stretch through the second connecting ring 344, thereby making the sliding of the upper grinding plate 31 smoother and more stable, and improving the grinding effect.

[0033] The adjusting assembly 35 includes a fixed block 351. The fixed block 351 is fixedly connected to the side wall of the main body 1. A third chute 355 is opened on the end surface of the fixed block 351 away from the main body 1. A slider 353 and a first support rod 352 are slidably connected in the third chute 355. Both the slider 353 and the first support rod 352 are fixedly connected to the lower grinding plate 32. An adjusting lead screw 354 is also rotatably connected to the fixed block 351. A first lead screw nut is arranged in the slider 353, and a second lead screw nut is arranged in the first support rod 352. Both the first lead screw nut and the second lead screw nut cooperate with the adjusting lead screw 354.

[0034] For different processing requirements, the requirements for the particle size of the phosphate sodium are also different. Therefore, the distance between the upper grinding plate 31 and the lower grinding plate 32 needs to be adjustable. When adjusting the distance between the upper grinding plate 31 and the lower grinding plate 32, manually rotate the adjusting lead screw 354. The adjusting lead screw 354 drives the slider 353 and the first support rod 352 to slide. The slider 353 and the first support rod 352 jointly drive the lower grinding plate 32 to slide, thereby realizing the adjustment of the distance between the upper grinding plate 31 and the lower grinding plate 32, enabling the grinding mechanism 3 to grind phosphate sodium with different particle sizes, and improving the applicability of the entire equipment.

[0035] Reference Figure 3 Moreover, a power assembly 33 is also installed on the main body 1. The power assembly 33 includes a mounting plate 331. A motor 332 is fixedly connected to the mounting plate 331. A first cam 334 is fixedly connected to the output shaft of the motor 332. A first sliding rod 335 is slidably connected to the side wall of the main body 1 near the motor 332. One end of the first sliding rod 335 located inside the main body 1 is fixedly connected to the upper grinding plate 31. The end of the first sliding rod 335 away from the upper grinding plate 31 abuts against the first cam 334. A first connecting ring 336 is fixedly connected to the side wall of the first sliding rod 335. A first spring 337 is fixedly connected to the side wall of the main body 1 near the first connecting ring 336. One end of the first spring 337 away from the first connecting ring 336 is fixedly connected to the main body 1.

[0036] When grinding the lumpy sodium phosphate, the motor 332 is started. The motor 332 drives the first rotating shaft 333 to rotate. The first rotating shaft 333 drives the first cam 334 to rotate. The first cam 334 cooperates with the first spring 337 to drive the first sliding rod 335 to reciprocate. The first sliding rod 335 drives the upper grinding plate 31 to reciprocate. The upper grinding plate 31 cooperates with the lower grinding plate 32 to grind the lumpy sodium phosphate.

[0037] Reference Figure 3 and Figure 4 As shown in Figures 5 and 6, the collecting mechanism 4 includes a collecting hopper 41. The collecting hopper 41 is fixedly connected inside the main body 1 and is located at one end of the lower grinding plate 32 away from the upper grinding plate 31. A blower 42 is fixedly connected to the side wall of the main body 1 away from the motor 332. The air outlet end of the blower 42 is fixedly connected to an air outlet pipe 43. One end of the air outlet pipe 43 away from the blower 42 is located in the collecting hopper 41. A heating resistance wire 44 is fixedly connected to the side wall of the air outlet pipe 43. The ground sodium phosphate falls into the collecting hopper 41. When it enters the collecting hopper 41, the blower 42 is started. The blower 42 blows air into the collecting hopper 41 through the air outlet pipe 43. At the same time, the heating resistance wire 44 heats the air in the air outlet pipe 43. The heated air dries the ground sodium phosphate, thereby reducing the probability of the wet sodium phosphate particles clogging the screening mesh.

[0038] The collecting mechanism 4 further includes a knocking component 45. The knocking component 45 includes a third sliding rod 451. The third sliding rod 451 is slidably connected to the side wall of the main body 1 close to the motor 332. One end of the third sliding rod 451 located inside the main body 1 is fixedly connected to a knocking block 452. A third connecting ring 453 is fixedly connected to the side wall of the third sliding rod 451. A third spring 454 is fixedly connected to the side wall of the third connecting ring 453 close to the main body 1. One end of the third spring 454 away from the third connecting ring 453 is fixedly connected to the main body 1. A third cam 455 is also fixedly connected to the first rotating shaft 333. One end of the third sliding rod 451 away from the knocking block 452 abuts against the third cam 455.

[0039] The ground sodium phosphate particles will partially adhere to the inner wall of the collection hopper 41, which will cause the blockage of the collection hopper 41 after long-term accumulation. When the motor 332 is started, the motor 332 drives the first rotating shaft 333 to rotate, the first rotating shaft 333 drives the third cam 455 to rotate, the third cam 455 and the third spring 454 cooperate with each other to drive the third sliding rod 451 to move reciprocally, the third sliding rod 451 drives the knocking block 452 to move reciprocally, and the knocking block 452 knocks on the side wall of the collection hopper 41, thereby reducing the probability of the collection hopper 41 being blocked by sodium phosphate particles; and the grinding and knocking actions are simultaneously realized by one motor 332, combining the grinding and knocking together. When in use, only the switch of the motor 332 needs to be turned on, which simplifies the operation steps and improves the production efficiency.

[0040] The screening mechanism 5 includes two second support rods 51, both of the two second support rods 51 are fixedly connected to the bottom wall inside the main body 1, a fourth chute 511 is opened on the end face of the second support rod 51 close to the lower grinding plate 32, the screening mechanism 5 further includes a vibration assembly 53, the vibration assembly 53 includes two second sliding rods 531, the two second sliding rods 531 are respectively slidably connected in the two fourth chutes 511, a common fixed connection of one ends of the two second sliding rods 531 close to the lower grinding plate 32 is an umbrella-shaped screening mesh 52, a fourth connecting ring 532 is fixedly connected to the side wall of the second sliding rod 531 located outside the main body 1, a fourth spring 533 is fixedly connected to one end of the fourth connecting ring 532 close to the umbrella-shaped screening mesh 52, and the end of the fourth spring 533 away from the fourth connecting ring 532 is fixedly connected to the main body 1. A transmission mechanism 6 is further installed on the main body 1, and the transmission mechanism 6 is connected to the second sliding rod 531.

[0041] The transmission mechanism 6 includes a second rotating shaft 61, the second rotating shaft 61 is rotatably connected to the side wall of the main body 1 close to the motor 332, a first bevel gear 62 is fixedly connected to the first rotating shaft 333, a second bevel gear 63 is fixedly connected to the second rotating shaft 61, the first bevel gear 62 meshes with the second bevel gear 63, a first sprocket 64 is further fixedly connected to the second rotating shaft 61, a mounting block 65 is fixedly connected to the bottom wall of the main body 1, a third rotating shaft 66 is rotatably connected to the mounting block 65, a second sprocket 67 is fixedly connected to the third rotating shaft 66, a chain 68 is rotatably connected to the first sprocket 64 and the second sprocket 67, and two second cams 69 are further fixedly connected to the third rotating shaft 66, and the two second cams 69 respectively abut against one ends of the two second sliding rods 531 away from the umbrella-shaped screening mesh 52.

[0042] When the motor 332 starts, the motor 332 drives the first rotating shaft 333 to rotate. The first rotating shaft 333 drives the first bevel gear 62 to rotate. The first bevel gear 62 drives the second bevel gear 63 to rotate. The second bevel gear 63 drives the second rotating shaft 61 to rotate. The second rotating shaft 61 drives the first sprocket 64 to rotate. The first sprocket 64 drives the second sprocket 67 to rotate through the chain 68. The second sprocket 67 drives the third rotating shaft 66 to rotate. The third rotating shaft 66 drives the second cam 69 to rotate. The second cam 69 cooperates with the fourth spring 533 to drive the second sliding rod 531 to perform reciprocating motion. The second sliding rod 531 drives the umbrella-shaped screening mesh 52 to vibrate. The transmission mechanism 6 combines the vibration of the umbrella-shaped screening mesh 52 with the grinding of the grinding mechanism 3 and the knocking of the knocking component 45, realizes the linkage and synchronization of grinding, knocking and screening vibration through one power source, thereby simplifying the operation steps and improving the working efficiency of the entire device.

[0043] Reference Figure 5 , a recovery mechanism 7 is further installed in the main body 1. The recovery mechanism 7 includes a collection ring 71. The collection ring 71 is fixedly connected in the main body 1 and is inclined. The collection ring 71 is located at one end of the umbrella-shaped screening mesh 52 away from the collection hopper 41. A collection pipe 72 is further installed on the main body 1. One end of the collection pipe 72 located inside the main body 1 is located at the lower end of the inclined collection ring 71. A screw conveyor 73 is further installed on the main body 1. One end of the collection pipe 72 away from the collection ring 71 is located in the screw conveyor 73. The discharge port end of the screw conveyor 73 is fixedly connected with a discharge pipe 74. The discharge end of the discharge pipe 74 is located at the feed end of the feed hopper 2.

[0044] The larger-grained sodium phosphate after screening slides from the umbrella-shaped screening mesh 52 into the collection ring 71. Since the collection ring 71 is inclined, the sliding sodium phosphate gathers towards the end of the collection ring 71 away from the umbrella-shaped screening mesh 52. Then the gathered sodium phosphate enters the screw conveyor 73 through the collection pipe 72. Then the screw conveyor 73 re-adds the sodium phosphate with unqualified particle size to the feed hopper 2 through the discharge pipe 74, thereby realizing the automatic recovery of the unqualified sodium phosphate particles after screening.

[0045] The embodiment of the present application also discloses a waste grinding and screening process for rare earth production.

[0046] A waste grinding and screening process for rare earth production includes the following steps: Step 1: First, knock the lumpy sodium phosphate into small pieces, and then add the small pieces of sodium phosphate to the feed hopper 2; Step 2: Start the motor 332. The motor 332 drives the first rotating shaft 333 to rotate. The first rotating shaft 333 drives the first cam 334 to rotate. The first cam 334 cooperates with the first spring 337 to drive the first sliding rod 335 to perform reciprocating motion. The first sliding rod 335 drives the upper grinding plate 31 to perform reciprocating motion. The upper grinding plate 31 cooperates with the lower grinding plate 32 to grind the lumped sodium phosphate. Step 3: At the same time, the first rotating shaft 333 drives the third cam 455 to rotate. The third cam 455 cooperates with the third spring 454 to drive the third sliding rod 451 to perform reciprocating motion. The third sliding rod 451 drives the knocking block 452 to perform reciprocating motion. The knocking block 452 knocks on the side wall of the collecting hopper 41. Step 4: Also, the first rotating shaft 333 drives the first bevel gear 62 to rotate. The first bevel gear 62 drives the second bevel gear 63 to rotate. The second bevel gear 63 drives the second rotating shaft 61 to rotate. The second rotating shaft 61 drives the first sprocket 64 to rotate. The first sprocket 64 drives the second sprocket 67 to rotate through the chain 68. The second sprocket 67 drives the third rotating shaft 66 to rotate. The third rotating shaft 66 drives the second cam 69 to rotate. The second cam 69 cooperates with the fourth spring 533 to drive the second sliding rod 531 to perform reciprocating motion. The second sliding rod 531 drives the umbrella-shaped screening mesh 52 to vibrate. Step 5: At this time, start the screw elevator 73. The larger particles of sodium phosphate after screening slide down from the umbrella-shaped screening mesh 52 into the collecting ring 71, and then the screw elevator 73 re-feeds the larger particles of sodium phosphate into the feed hopper 2 for grinding.

[0047] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A waste grinding and screening device for rare earth production, comprising a main body (1), an inlet hopper (2) is installed on the main body (1), and a grinding mechanism (3) and a screening mechanism (5) are also installed inside the main body (1), characterized in that, A collecting mechanism (4) is installed between the grinding mechanism (3) and the screening mechanism (5). The collecting mechanism (4) includes a collecting hopper (41). The collecting hopper (41) is fixedly connected inside the main body (1). A blower (42) is also installed on the main body (1). The air outlet end of the blower (42) is fixedly connected with an air outlet pipe (43). One end of the air outlet pipe (43) away from the blower (42) is located in the collecting hopper (41). An electric heating resistance wire (44) is fixedly connected to the air outlet pipe (43).

2. The waste grinding and screening device for rare earth production according to claim 1, wherein The grinding mechanism (3) includes an upper grinding plate (31). The upper grinding plate (31) is slidably connected inside the main body (1) through a sliding component (34). A lower grinding plate (32) is also installed on the main body (1) through an adjusting component (35) on a mounting plate (331). A power component (33) is also installed on the main body (1). The power component (33) is connected to the upper grinding plate (31).

3. The waste grinding and screening device for rare earth production according to claim 2, characterized in that, A first sliding groove (11) is formed on the top wall of the main body (1). A second sliding groove (12) is formed on the side wall of the first sliding groove (11). The sliding component (34) includes an auxiliary block (342). The auxiliary block (342) is slidably connected in the first sliding groove (11). Auxiliary wheels (343) are rotatably connected to both ends of the auxiliary block (342). The auxiliary wheels (343) are rotatably connected in the second sliding groove (12). One end of the upper grinding plate (31) away from the lower grinding plate (32) is fixedly connected with a connecting rod (341). The connecting rod (341) passes through one end of the auxiliary block (342) and is fixedly connected with a second connecting ring (344). One end of the second connecting ring (344) close to the main body (1) is fixedly connected with a second spring (345). The second spring (345) is fixedly connected with the main body (1).

4. The waste grinding and screening device for rare earth production according to claim 2, characterized in that, The power component (33) includes a motor (332). The motor (332) is installed on the main body (1). A first rotating shaft (333) is fixedly connected to the output shaft of the motor (332). A first cam (334) is fixed on the first rotating shaft (333). A first sliding rod (335) is slidably connected to the side wall of the main body (1). One end of the first sliding rod (335) located inside the main body (1) is fixedly connected with the upper grinding plate (31). One end of the first sliding rod (335) away from the upper grinding plate (31) abuts against the first cam (334). A first connecting ring (336) is fixedly connected to the side wall of the first sliding rod (335). One end of the first connecting ring (336) close to the side wall of the main body (1) is fixedly connected with a first spring (337). The first spring (337) is fixedly connected with the main body (1).

5. The waste grinding and screening device for rare earth production according to claim 2, characterized in that, The adjusting component (35) includes a fixed block (351) fixedly connected to the main body (1). A through third sliding groove (355) is formed in the end face of the fixed block (351) away from the main body (1). A slider (353) is slidably connected in the third sliding groove (355), and the slider (353) is fixedly connected to the lower grinding plate (32). One end of the lower grinding plate (32) close to the fixed block (351) is also fixedly connected to a first support rod (352). One end of the first support rod (352) away from the lower grinding plate (32) is slidably connected in the third sliding groove (355). An adjusting lead screw (354) is rotatably connected to the fixed block (351). A first lead screw nut is arranged in the slider (353), and a second lead screw nut is arranged in the first support rod (352). Both the first lead screw nut and the second lead screw nut cooperate with the adjusting lead screw (354).

6. The waste grinding and screening device for rare earth production according to claim 4, wherein, The collecting mechanism (4) further includes a knocking component (45). The knocking component (45) includes a third sliding rod (451) slidably connected to the main body (1). A knocking block (452) is fixedly connected to one end of the third sliding rod (451) located inside the main body (1). A third connecting ring (453) is fixedly connected to the side wall of the third sliding rod (451). A third spring (454) is fixedly connected to the side wall of the third connecting ring (453) close to the main body (1), and the third spring (454) is fixedly connected to the main body (1). A third cam (455) is also fixedly connected to the first rotating shaft (333). One end of the third sliding rod (451) away from the knocking block (452) abuts against the third cam (455).

7. The waste grinding and screening device for rare earth production according to claim 6, wherein, The screening mechanism (5) includes a second support rod (51) fixedly connected to the bottom wall inside the main body (1). One end of the second support rod (51) close to the upper grinding plate (31) is slidably connected to an umbrella-shaped screening mesh (52) through a vibration component (53). A through fourth sliding groove (511) is formed in the end face of the second support rod (51) close to the umbrella-shaped screening mesh (52). The vibration component (53) includes a second sliding rod (531) slidably connected in the fourth sliding groove (511) and fixedly connected to the umbrella-shaped screening mesh (52). A fourth connecting ring (532) is fixedly connected to the side wall of the second sliding rod (531). A fourth spring (533) is fixedly connected to one end of the fourth connecting ring (532) close to the umbrella-shaped screening mesh (52), and the fourth spring (533) is fixedly connected to the main body (1). A transmission mechanism (6) is also installed on the main body (1), and the transmission mechanism (6) is connected to the second sliding rod (531).

8. The waste grinding and screening device for rare earth production according to claim 7, wherein The transmission mechanism (6) includes a second rotating shaft (61) which is rotatably connected to the side wall of the main body (1) close to the motor (332). A first bevel gear (62) is fixedly connected to the first rotating shaft (333), and a second bevel gear (63) is fixedly connected to the second rotating shaft (61). The first bevel gear (62) meshes with the second bevel gear (63). A first sprocket (64) is also fixedly connected to the second rotating shaft (61), and a mounting block (65) is fixedly connected to the bottom wall of the main body (1). A third rotating shaft (66) is rotatably connected to the mounting block (65), and a second sprocket (67) is fixedly connected to the third rotating shaft (66). A chain (68) is rotatably connected to both the first sprocket (64) and the second sprocket (67). A second cam (69) is also fixedly connected to the third rotating shaft (66), and the second cam (69) abuts against one end of the second sliding rod (531) away from the umbrella-shaped screening mesh (52).

9. The waste grinding and screening device for rare earth production according to claim 8, characterized in that, A recycling mechanism (7) is also installed in the main body (1). The recycling mechanism (7) includes a collection ring (71) which is installed in the main body (1) and is inclined. The collection ring (71) is located at one end of the umbrella-shaped screening mesh (52) away from the collection hopper (41). A collection pipe (72) is also installed on the main body (1). One end of the collection pipe (72) located inside the main body (1) is at one end of the collection ring (71) away from the umbrella-shaped screening mesh (52). A screw conveyor elevator (73) is also installed on the main body (1). One end of the collection pipe (72) away from the collection ring (71) is located in the screw conveyor elevator (73). A discharge pipe (74) is fixedly connected to the discharge port end of the screw conveyor elevator (73). The discharge end of the discharge pipe (74) is at one end of the feed hopper (2) away from the main body (1).

10. A waste grinding and screening process for rare earth production, characterized in that, Using the waste grinding and screening device for rare earth production according to claim 9 to grind and screen sodium phosphate, the following steps are included: Step 1: First, knock the lumpy sodium phosphate into small pieces, and then pour the small pieces of sodium phosphate into the feed hopper (2). Step 2: Start the motor (332). The motor (332) drives the first rotating shaft (333) to rotate. The first rotating shaft (333) drives the first cam (334) to rotate. The first cam (334) and the first spring (337) cooperate to drive the first sliding rod (335) to perform reciprocating motion. The first sliding rod (335) drives the upper grinding plate (31) to perform reciprocating motion. The upper grinding plate (31) and the lower grinding plate (32) cooperate to grind the lumpy sodium phosphate. Step 3: At the same time, the first rotating shaft (333) drives the third cam (455) to rotate. The third cam (455) and the third spring (454) cooperate with each other to drive the third sliding rod (451) to perform reciprocating motion. The third sliding rod (451) drives the knocking block (452) to perform reciprocating motion, and the knocking block (452) knocks on the side wall of the collecting hopper (41). Step 4: Moreover, the first rotating shaft (333) drives the first bevel gear (62) to rotate. The first bevel gear (62) drives the second bevel gear (63) to rotate. The second bevel gear (63) drives the second rotating shaft (61) to rotate. The second rotating shaft (61) drives the first sprocket (64) to rotate. The first sprocket (64) drives the second sprocket (67) to rotate through the chain (68). The second sprocket (67) drives the third rotating shaft (66) to rotate. The third rotating shaft (66) drives the second cam (69) to rotate. The second cam (69) and the fourth spring (533) cooperate with each other to drive the second sliding rod (531) to perform reciprocating motion. The second sliding rod (531) drives the umbrella-shaped screening mesh (52) to vibrate. Step 5: At this time, start the auger elevator (73). The relatively large-sized sodium phosphate particles after screening slide down from the umbrella-shaped screening mesh (52) into the collecting ring (71), and then the auger elevator (73) re-feeds the relatively large-sized sodium phosphate particles into the feed hopper (2) for grinding.

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