Rare earth ore crushing device

Abstract

The utility model relates to the field of rare earth production devices, in particular to a rare earth ore crushing device which comprises a shell, a hopper is fixed to the shell, crushing shafts are arranged on the parts, on the two sides of the lower portion of the hopper, of the shell, crushing rollers are fixed to the parts, in the shell, of the crushing shafts, and the crushing shafts are driven by a crushing motor to rotate. A limiting shaft is arranged below the crushing roller, a limiting roller is fixed to the limiting shaft, fixing plates are fixed to the positions, on the two sides of the limiting shaft, of the shell, limiting motors are fixed to the fixing plates, screw rods are fixed to the output ends of the limiting motors, and limiting plates are arranged above the fixing plates; the two ends of the limiting shaft are arranged on the limiting plates and rotationally connected with the limiting plates, threaded pipes are further fixed to the limiting plates, and the screws are in threaded connection with the threaded pipes at the corresponding positions. The rare earth ore crushing device can directly crush rare earth ore for multiple times, and does not need to crush the rare earth ore again after shutdown for material taking, so that the crushing efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of rare earth production equipment, and more particularly to a rare earth ore crushing device. Background Technology

[0002] Rare earth elements are a collective term for seventeen metallic elements, including the lanthanides and scandium / yttrium, found in the periodic table. There are 250 rare earth minerals in nature. The first to discover rare earth elements was the Finnish chemist Gadolin. In 1794, he isolated the first rare earth "element" from a heavy ore resembling bitumen. Because few rare earth minerals were discovered in the 18th century, only small amounts of water-insoluble oxides could be produced chemically at that time. Historically, these oxides were conventionally called "earth," hence the name rare earth. The mined rare earth ores contain only a few percent, or even less, of rare earth oxides. To meet the production requirements of smelting, beneficiation is performed before smelting to separate rare earth minerals from gangue minerals and other useful minerals, thereby increasing the rare earth oxide content and obtaining rare earth concentrates that meet the requirements of rare earth metallurgy.

[0003] Currently, rare earth ore processing requires crushing the ore and then using a screening device to achieve uniform processing. For example, patent application CN201710337055.5 discloses a screening and crushing device for rare earth carbonates. Rare earth carbonates are added to the crushing chamber via a hopper and crushed by the crushing device. The crushed rare earth carbonates fall onto a screening device, and after screening, the appropriately sized rare earth carbonates fall to the bottom of the cylinder. The operator then opens a valve to discharge them through a discharge pipe. The operator then uses the screening device to turn over any excessively large rare earth carbonate particles accumulated on the screening device to the bottom of the cylinder, and discharges them through the discharge pipe for further crushing. This ensures that the crushed rare earth ore particles meet the requirements. However, this type of crushing and screening device cannot guarantee complete crushing of all raw materials. It requires stopping the machine after screening to remove the unsuitable raw materials for further crushing, resulting in low crushing efficiency.

[0004] This invention was developed to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rare earth ore crushing device.

[0006] This invention can be achieved through the following technical solutions:

[0007] This invention discloses a rare earth ore crushing device, comprising a shell, a hopper fixed on the shell, crushing shafts mounted on both sides of the shell below the hopper, crushing rollers fixed on the crushing shafts inside the shell, the crushing shafts being driven to rotate by a crushing motor, a limit shaft below the crushing rollers, a limit roller fixed on the limit shaft, fixing plates fixed on both sides of the shell on the limit shaft, a limit motor fixed on the fixing plate, a screw fixed at the output end of the limit motor, a limit plate above each fixing plate, the two ends of the limit shaft mounted on the limit plates and rotatably connected to the limit plates, threaded tubes fixed on the limit plates, and the screws and corresponding screws... The device features a threaded connection. A guide trough is fixed to the outer casing below the limiting roller. The guide trough has evenly distributed filter holes. A discharge port is located on one side of the guide trough. A discharge shaft is installed inside the guide trough and is driven to rotate by a discharge motor. A discharge spiral blade is fixed to the discharge shaft. A discharge trough is fixed to the outer casing below the discharge port. A lifting pipe is installed on one side of the outer casing. An inlet is located on the lifting pipe at a position corresponding to the discharge trough. A lifting shaft is installed on the lifting pipe and is driven to rotate by a lifting motor. A lifting spiral blade is fixed to the lifting shaft inside the lifting pipe. A return pipe connected to a hopper is fixed to the top of the lifting pipe. The ore to be crushed is fed into the outer casing through the hopper. A crushing motor drives two crushing rollers to rotate, crushing the ore by squeezing it. The crushed ore then passes through the gap between the crushing rollers and the limiting rollers, where it is crushed again by the interaction of the crushing rollers and the limiting rollers. The crushed ore falls into the guide chute. A feeding motor drives the feeding shaft to rotate back and forth, and the feeding auger blades rotate back and forth. The crushed rare earth ore moves back and forth in the guide chute. Some small pieces of rare earth ore fall through the filter holes in the guide chute and are collected outside the outer casing. Larger pieces remain in the guide chute. Driven by the rotation of the feeding auger blades, the ore reaches the feeding port and slides down the feeding chute to the lifting pipe. A limiting motor then drives the screw to rotate. When the lever rotates, the limit roller rises, reducing the gap between the limit roller and the crushing roller. The lifting motor drives the lifting auger to rotate. As the auger rotates, the ore in the feed chute enters the lifting pipe. The ore moves upward within the lifting pipe, and after reaching the return pipe, it slides into the hopper. The ore is then crushed again by the two crushing rollers and passes through the gap between the crushing roller and the limit roller. This process is repeated. This device screens the crushed ore and gradually reduces the gap between the crushing roller and the limit roller. Through multiple crushing operations, the ore is broken into fine particles suitable for production. This device can directly perform multiple crushing operations without stopping the machine to remove material and then crushing again, greatly improving crushing efficiency.

[0008] Preferably, gears are fixed to the ends of both crushing shafts, and the two gears mesh with each other.

[0009] Preferably, the limiting plate is further fixed with multiple limiting rods, which pass through the fixing plate and are slidably connected to the fixing plate.

[0010] Preferably, a receiving plate is also fixed obliquely on the outer shell below the feed chute. After the ore is discharged through the filter holes, it falls onto the receiving plate, and the ore powder slides down and is collected.

[0011] Compared with existing technologies, the present invention has the following advantages:

[0012] This device screens the crushed ore and gradually reduces the gap between the crushing roller and the limiting roller. Through multiple crushing operations, the ore is crushed into fine particles that meet production requirements. This device can directly crush rare earth ore multiple times without stopping the machine to remove material and then crushing it again, which greatly improves the crushing efficiency. Attached Figure Description

[0013] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a right view of the present invention;

[0016] Figure 3 for Figure 2 Sectional view at point AA;

[0017] Figure 4 for Figure 2 Sectional view at point BB;

[0018] In the diagram: 1. Outer shell; 2. Hopper; 3. Crushing shaft; 4. Crushing motor; 5. Crushing roller; 6. Gear; 7. Limiting shaft; 8. Limiting roller; 9. Limiting plate; 10. Threaded pipe; 11. Fixing plate; 12. Limiting rod; 13. Limiting motor; 14. Screw; 15. Guide chute; 16. Filter hole; 17. Discharge port; 18. Discharge shaft; 19. Discharge spiral blade; 20. Discharge motor; 21. Discharge chute; 22. Lifting pipe; 23. Feed inlet; 24. Lifting shaft; 25. Lifting motor; 26. Lifting spiral blade; 27. Return pipe; Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0020] Example 1:

[0021] like Figures 1 to 4As shown, this embodiment discloses a rare earth ore crushing device, comprising a shell 1, a hopper 2 fixed on the shell 1, crushing shafts 3 arranged on both sides of the shell 1 below the hopper 2, crushing rollers 5 fixed on the crushing shafts 3 inside the shell 1, the crushing shafts 3 being driven to rotate by a crushing motor 4, a limiting shaft 7 arranged below the crushing rollers 5, a limiting roller 8 fixed on the limiting shaft 7, fixing plates 11 fixed on both sides of the shell 1, a limiting motor 13 fixed on the fixing plate 11, a screw 14 fixed at the output end of the limiting motor 13, a limiting plate 9 arranged above the fixing plate 11, the two ends of the limiting shaft 7 being arranged on the limiting plate 9 and rotatably connected to the limiting plate 9, a threaded tube 10 also fixed on the limiting plate 9, and the screw 14 being threadedly connected to the threaded tube 10 at the corresponding position. A guide trough 15 is fixed on the outer shell 1 below the limiting roller 8. Filter holes 16 are evenly arranged on the guide trough 15. A discharge port 17 is also provided on one side of the guide trough 15. A discharge shaft 18 is also provided inside the guide trough 15. The discharge shaft 18 is driven to rotate by the discharge motor 20. A discharge spiral blade 19 is also fixed on the discharge shaft 18. A discharge trough 21 is fixed on the outer shell 1 below the discharge port 17. A lifting pipe 22 is also provided on one side of the outer shell 1. A feed inlet 23 is provided on the lifting pipe 22 at a position corresponding to the discharge trough 21. A lifting shaft 24 is provided on the lifting pipe 22. The lifting shaft 24 is driven to rotate by the lifting motor 25. A lifting spiral blade 26 is also fixed on the lifting shaft 24 inside the lifting pipe 22. A return pipe 27 connected to the hopper 2 is also fixed at the top of the lifting pipe 22.The ore to be crushed is fed into the outer shell 1 through the hopper 2. The crushing motor 4 drives the two crushing rollers 5 to rotate, crushing the ore by squeezing it. After crushing, the ore passes through the gap between the crushing rollers 5 and the limiting rollers 8, and is crushed again by the cooperation of the crushing rollers 5 and the limiting rollers 8. The crushed ore falls into the guide chute 15. The feeding motor 20 drives the feeding shaft 18 to rotate back and forth, and the feeding spiral blade 19 rotates back and forth. The crushed rare earth ore moves back and forth in the guide chute 15. Some of the fine rare earth ore falls out of the outer shell 1 and is collected after passing through the filter holes 16 on the guide chute 15. The larger pieces of ore remain in the guide chute 15. After the feeding spiral blade 19 rotates, the ore reaches the feeding port 17 and slides down the feeding chute 21 to the lifting pipe 22. The limiting motor 13 drives the screw 14 to rotate. When the two screws 14 rotate, the limiting roller 8 rises, and the gap between the limiting roller 8 and the crushing roller 5 decreases. The lifting motor 25 drives the lifting spiral blade 26 to rotate. When the lifting spiral blade 26 rotates, the ore at the feeding chute 21 enters the lifting pipe 22. The ore moves upward in the lifting pipe 22. After the ore reaches the return pipe 27, it slides down into the hopper 2. The ore is crushed again by the two crushing rollers 5 and then crushed after passing through the gap between the crushing roller 5 and the limiting roller 8. This process is repeated. This device screens the crushed ore and gradually reduces the gap between the crushing roller 5 and the limiting roller 8. Through multiple crushing operations, the ore is crushed into fine particles that meet production requirements. This device can directly perform multiple crushing operations without stopping the machine to remove material and then crushing again, which greatly improves the crushing efficiency.

[0022] Among them, gears 6 are fixed at the ends of the two crushing shafts 3, and the two gears 6 mesh with each other.

[0023] The limiting plate 9 is also fixed with multiple limiting rods 12, which pass through the fixing plate 11 and are slidably connected to the fixing plate 11.

[0024] Example 2:

[0025] This embodiment discloses a rare earth ore crushing device. Based on the structure and principle of Embodiment 1, this embodiment also has a receiving plate fixed at an incline on the outer shell 1 below the feed chute 15. After the ore is discharged through the filter holes 16, it falls onto the receiving plate, and the ore powder slides down and is collected by the receiving plate.

[0026] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the scope of protection of the present invention.

Claims

1. A rare earth ore crushing device, comprising a shell, characterized in that, A hopper is fixed to the outer shell. Crushing shafts are installed on both sides of the outer shell below the hopper. Crushing rollers are fixed to the crushing shafts inside the outer shell. The crushing shafts are driven to rotate by a crushing motor. A limit shaft is installed below the crushing rollers. A limit roller is fixed to the limit shaft. Fixing plates are fixed to both sides of the outer shell on the limit shaft. A limit motor is fixed to the fixing plate. A screw is fixed to the output end of the limit motor. A limit plate is installed above each fixing plate. Both ends of the limit shaft are mounted on the limit plates and rotatably connected to them. Threaded tubes are also fixed to the limit plates. The screw is threadedly connected to the corresponding threaded tube. A guide trough is fixed on the outer shell below the roller. Filter holes are evenly arranged on the guide trough. A discharge port is also provided on one side of the guide trough. A discharge shaft is also provided inside the guide trough. The discharge shaft is driven to rotate by a discharge motor. A discharge spiral blade is also fixed on the discharge shaft. A discharge trough is fixed on the outer shell below the discharge port. A lifting pipe is also provided on one side of the outer shell. An inlet is provided on the lifting pipe at a position corresponding to the discharge trough. A lifting shaft is provided on the lifting pipe. The lifting shaft is driven to rotate by a lifting motor. A lifting spiral blade is also fixed on the lifting shaft inside the lifting pipe. A return pipe connected to the hopper is also fixed at the top of the lifting pipe.

2. The rare earth ore crushing device according to claim 1, characterized in that: Gears are fixed to the ends of both crushing shafts, and the two gears mesh with each other.

3. The rare earth ore crushing device according to claim 1, characterized in that: The limiting plate is also fixed with multiple limiting rods, which pass through the fixing plate and are slidably connected to it.

4. The rare earth ore crushing device according to claim 1, characterized in that: A receiving plate is also fixed at an angle on the outer shell below the material guide trough.

Images