Rare earth grinding device

Abstract

The invention relates to the field of rare earth production devices, in particular to a rare earth grinding device which comprises a bottom plate, supporting plates are symmetrically fixed to the two sides of the upper portion of the bottom plate, a shell is arranged above the bottom plate, supporting shafts are symmetrically fixed to the two sides of the shell, and the supporting shafts penetrate through the supporting plates at the corresponding positions and are rotationally connected with the supporting plates. Wherein a supporting gear is fixed to the tail end of one supporting shaft, a hydraulic cylinder is further fixed to the supporting plate, a rack is fixed to the tail end of a piston rod of the hydraulic cylinder, the rack is meshed with the supporting gear, conical crushing cavities are formed in the two sides in the shell, and conical grinding balls are arranged in the crushing cavities. A rotating shaft is further arranged on the shell, penetrates through the grinding ball and is connected with the grinding ball in a sliding mode. According to the device, the distance between the two grinding balls is adjusted, so that the gaps between the grinding balls and the crushing cavity are gradually adjusted, and large rare earth raw materials can be directly ground to the specified size.

Description

Technical Field

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

[0002] During the rare earth production process, in order to improve the dissolution efficiency of rare earth ores, the rare earth ores are generally ground into powders and then added to a dissolution device for dissolution.

[0003] Patent Application No.: CN201921334290.8 discloses a grinding device for rare earth materials, including two rotating rods rotatably connected to the right side wall of the grinding box cavity and both passing through the baffle. Transmission gears that mesh with each other are fixedly installed on the outer surfaces of the two rotating rods. Two grinding columns that are respectively fixedly connected to the two rotating rods are movably connected between the two baffles. A motor is fixedly installed on the left side of the grinding box, and a rotating shaft that passes through the grinding box and the single plate and is fixedly connected to the front grinding column is fixedly connected to the output shaft of the motor. The grinding of rare earth materials is achieved by the opposite rotation of the two grinding columns. However, such a grinding device cannot adjust the grinding gap. Different particle size requirements are needed for rare earths to meet the performance requirements of the materials. However, during the existing rare earth grinding, the grinding particle size of rare earths cannot be adjusted, resulting in a problem of reduced practicality of the grinding device.

[0004] The present invention is specifically studied and proposed in view of the deficiencies of the prior art. Summary of the Invention

[0005] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a rare earth grinding device.

[0006] The present invention can be realized by the following technical solutions:

[0007] The present invention discloses a rare earth grinding device, which includes a bottom plate. On both sides above the bottom plate, support plates are symmetrically and fixedly arranged. Above the bottom plate, there is a housing. On both sides of the housing, support shafts are symmetrically and fixedly arranged. The support shafts pass through the support plates at corresponding positions and are rotatably connected to the support plates. At the end of one of the support shafts, a support gear is fixedly arranged. On the support plates, a hydraulic cylinder is also fixedly arranged. At the end of the piston rod of the hydraulic cylinder, a rack is fixedly arranged. The rack meshes with the support gear. On both sides inside the housing, there are conical crushing chambers. In the crushing chambers, conical grinding balls are arranged. On the housing, there is also a rotating shaft. The rotating shaft passes through the grinding balls and is slidably connected to the grinding balls. The rotating shaft is driven to rotate by a rotating motor. At the ends of the grinding balls, positioning rings rotatably connected to the grinding balls are arranged. On the positioning rings, positioning plates are fixedly arranged. On the positioning plates, threaded tubes are fixedly arranged. On the housing, a positioning block is fixedly arranged. On the positioning block, a screw rod rotatably connected to the positioning block is arranged. The two ends of the screw rod pass through the threaded tubes at corresponding positions and are threadedly connected to the threaded tubes. The screw rod is driven to rotate by a positioning motor. On the housing, a feed pipe and a discharge pipe with valves are fixedly arranged. The rare earth raw material particles to be ground are discharged into the housing through the feed pipe. The valve on the feed pipe is closed. The hydraulic cylinder is started, and the piston rod on the hydraulic cylinder extends. The raw material slides from one crushing chamber to another. When the raw material passes between the grinding balls and the crushing chamber, the two grinding balls are driven to rotate by the rotating motor. When the grinding balls rotate, the housing at the position of the grinding balls and the grinding balls cooperate to grind the raw material. After the raw material slides from one crushing chamber to another, the raw material is ground twice. After grinding, the positioning motor is driven to rotate the screw rod. Since the thread directions on both sides of the screw rod are opposite, when the screw rod rotates, the two threaded tubes move in the direction of the screw rod, and the two grinding balls approach each other, reducing the gap between the grinding balls and the crushing chamber. The hydraulic cylinder is started again, and the support shaft rotates. The housing rotates with the support shaft. After the housing rotates, the ground rare earth raw material slides from one crushing chamber to another, and the raw material is ground again by the two grinding balls. The cycle operation is carried out, the gap between the grinding balls and the crushing chamber is adjusted again, and the raw material is ground again. When the ground raw material reaches a certain size, the valve on the discharge pipe is opened, and the rare earth powder is discharged through the discharge pipe. This device can gradually adjust the gap between the grinding balls and the crushing chamber by adjusting the distance between the two grinding balls, and can directly grind large rare earth raw materials to the specified size.

[0008] Preferably, a limit gear is fixedly arranged at the output end of the positioning motor, and a positioning gear is fixedly arranged at the end of the screw rod. The positioning gear meshes with the limit gear.

[0009] Preferably, two sliding grooves are provided on the outer shell. The positioning plate passes through the sliding grooves at corresponding positions and is slidably connected to the sliding grooves. A sealing plate for cooperating with the sliding grooves is also fixed on the positioning plate. When adjusting the distance between the two grinding balls, the positioning plate slides in the sliding grooves, and the sliding grooves are sealed by the sealing plate to prevent the rare earth raw materials from slipping from the positions of the sliding grooves.

[0010] The present invention has the following advantages compared with the existing technologies:

[0011] By adjusting the distance between the two grinding balls, the gap between the grinding balls and the crushing chamber can be gradually adjusted, and large pieces of rare earth raw materials can be directly ground to the specified size. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following further details the specific embodiments of the present invention with reference to the drawings, wherein:

[0013] Figure 1 is a schematic structural view of the present invention;

[0014] Figure 2 is a top view of the present invention;

[0015] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0016] In the figures: 1, outer shell; 2, crushing chamber; 3, feed pipe; 4, discharge pipe; 5, rotating shaft; 6, rotating motor; 7, grinding ball; 8, positioning ring; 9, positioning plate; 10, positioning block; 11, screw; 12, threaded pipe; 13, sliding groove; 14, sealing plate; 15, positioning motor; 16, positioning gear; 17, limiting gear; 18, bottom plate; 19, support plate; 20, support shaft; 21, support gear; 22, rack; 23, hydraulic cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following details the embodiments of the present invention with reference to the drawings:

[0018] Embodiment 1:

[0019] As Figures 1 to 3As shown in the figure, this embodiment discloses a rare earth grinding device, which includes a bottom plate 18. On both sides above the bottom plate 18, support plates 19 are symmetrically and fixedly arranged. Above the bottom plate 18, a housing 1 is arranged. On both sides of the housing 1, support shafts 20 are symmetrically and fixedly arranged. The support shafts 20 pass through the support plates 19 at corresponding positions and are rotatably connected to the support plates 19. A support gear 21 is fixedly arranged at the end of one of the support shafts 20. A hydraulic cylinder 23 is also fixedly arranged on the support plate 19 at the corresponding position. The end of the piston rod of the hydraulic cylinder 23 is fixedly provided with a rack 22, and the rack 22 meshes with the support gear 21. Conical crushing chambers 2 are arranged on both sides inside the housing 1. Conical grinding balls 7 are arranged in the crushing chambers 2. A rotating shaft 5 is also arranged on the housing 1. The rotating shaft 5 passes through the grinding balls 7 and is slidably connected to the grinding balls 7. The rotating shaft 5 is driven to rotate by a rotating motor 6. Positioning rings 8 rotatably connected to the grinding balls 7 are arranged at the ends of the grinding balls 7. Positioning plates 9 are fixedly arranged on the positioning rings 8. Threaded tubes 12 are fixedly arranged on the positioning plates 9. A positioning block 10 is fixedly arranged on the housing 1. A screw rod 11 rotatably connected to the positioning block 10 is arranged on the positioning block 10. Both ends of the screw rod 11 pass through the threaded tubes 12 at corresponding positions and are threadedly connected to the threaded tubes 12. The screw rod 11 is driven to rotate by a positioning motor 15. A feed pipe 3 with a valve and a discharge pipe 4 are fixedly arranged on the housing 1. The rare earth raw material particles to be ground are discharged into the housing 1 through the feed pipe 3. The valve on the feed pipe 3 is closed. The hydraulic cylinder 23 is started, and the piston rod on the hydraulic cylinder 23 extends. The raw material slides from one crushing chamber 2 to another. When the raw material passes between the grinding balls 7 and the crushing chamber 2, the two grinding balls 7 are driven to rotate by the rotating motor 6. When the grinding balls 7 rotate, the housing 1 at the position of the grinding balls 7 and the crushing chamber 2 cooperate to grind the raw material. After the raw material slides from one crushing chamber 2 to another, the raw material is ground twice. After grinding, the screw rod 11 is driven to rotate by the positioning motor 15. Since the thread directions on both sides of the screw rod 11 are opposite, when the screw rod 11 rotates, the two threaded tubes 12 move in the direction of the screw rod 11, and the two grinding balls 7 approach each other, reducing the gap between the grinding balls 7 and the crushing chamber 2. The hydraulic cylinder 23 is started again, and the support shaft 20 rotates. The housing 1 rotates with the support shaft 20. After the housing 1 rotates, the ground rare earth raw material slides from one crushing chamber 2 to another, and the raw material is ground again by the two grinding balls 7. The operation is cycled. The gap between the grinding balls 7 and the crushing chamber 2 is adjusted again, and the raw material is ground again. When the ground raw material reaches a certain size, the valve on the discharge pipe 4 is opened, and the rare earth powder is discharged through the discharge pipe 4. This device can gradually adjust the gap between the grinding balls 7 and the crushing chamber 2 by adjusting the distance between the two grinding balls 7, and can directly grind large rare earth raw materials to the specified size.

[0020] Wherein, a limit gear 17 is fixedly arranged at the output end of the positioning motor 15, and a positioning gear 16 is fixedly arranged at the end of the screw rod 11. The positioning gear 16 meshes with the limit gear 17.

[0021] Example 2:

[0022] This example discloses a rare earth grinding device. On the basis of the structure and principle of Example 1, two sliding grooves 13 are provided on the outer shell 1 of this example. The positioning plate 9 passes through the sliding grooves 13 at corresponding positions and is slidably connected to the sliding grooves 13. A sealing plate 14 that cooperates with the sliding grooves 13 is also fixed on the positioning plate 9. When adjusting the distance between the two grinding balls 7, the positioning plate 9 slides in the sliding grooves 13, and the sliding grooves 13 are sealed by the sealing plate 14 to prevent the rare earth raw materials from slipping from the positions of the sliding grooves 13.

[0023] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, various changes, modifications, substitutions, and variations can be made to these embodiments, and these changes, modifications, substitutions, and variations should also be regarded as the protection scope of the present invention.

Claims

1. A rare earth grinding device, comprising a bottom plate, characterized in that: Support plates are symmetrically fixed on both sides above the bottom plate, a shell is arranged above the bottom plate, support shafts are symmetrically fixed on both sides of the shell, the support shafts pass through the support plates at corresponding positions and are rotatably connected with the support plates, a support gear is fixed at the end of one of the support shafts, a hydraulic cylinder is also fixed on the support plate, a rack is fixed at the end of the piston rod of the hydraulic cylinder, the rack is meshed with the support gear, conical crushing chambers are arranged on both sides of the shell, conical grinding balls are arranged in the crushing chambers, a rotating shaft is also arranged on the shell, the rotating shaft passes through the grinding balls and is slidably connected with the grinding balls, the rotating shaft is driven to rotate by a rotating motor, positioning rings are arranged at the ends of the grinding balls and are rotatably connected with the grinding balls, positioning plates are fixed on the positioning rings, threaded tubes are fixed on the positioning plates, a positioning block is fixed on the shell, a screw rotatably connected with the positioning block is arranged on the positioning block, both ends of the screw pass through the threaded tubes at corresponding positions and are threadedly connected with the threaded tubes, the screw is driven to rotate by the positioning motor, and a feeding pipe and a discharging pipe with a valve are fixed on the shell.

2. The rare earth grinding device according to claim 1, characterized in that: A limiting gear is fixed at the output end of the positioning motor, a positioning gear is fixed at the end of the screw rod, and the positioning gear is meshed with the limiting gear.

3. The rare earth grinding device according to claim 1, characterized in that: The housing is provided with two slide grooves, the positioning plate passes through the slide grooves at corresponding positions and is slidably connected with the slide grooves, and a sealing plate used in conjunction with the slide grooves is also fixed on the positioning plate.

Images