Solid-liquid separation device for rare earth neodymium iron boron waste recovery

Abstract

The invention relates to the technical field of rare earth neodymium iron boron waste recovery, in particular to a solid-liquid separation device for rare earth neodymium iron boron waste recovery, which comprises two supports, a separation cylinder, a filter screen and the like, the separation cylinder is rotatably connected between the two supports, and the bottom of the separation cylinder is connected with the filter screen. Rare earth neodymium iron boron waste materials in the separation barrel can be extruded through the pressing plate, liquid in the rare earth neodymium iron boron waste materials is extruded out, solid-liquid separation is more thorough, air can be sprayed into the separation barrel through the spray head, the rare earth neodymium iron boron waste materials remaining on the inner wall of the separation barrel are blown out, and the separation efficiency is improved. And fine rare earth neodymium iron boron waste embedded in the filter screen can be blown out, the filter screen is prevented from being blocked, the separation barrel and the filter screen are automatically cleaned, shutdown is not needed, and therefore the working efficiency of the whole production line can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of rare earth NdFeB waste recycling, in particular to a solid-liquid separation device for rare earth NdFeB waste recycling. Background Art

[0002] Rare earth NdFeB magnetic materials have excellent magnetic properties and are widely used in electronics, automobiles, medical and other fields. However, with the scrapping or replacement of these products, a large amount of rare earth NdFeB waste will be generated. In order to achieve the goals of resource recycling and environmental protection, it is particularly important to effectively recycle and treat rare earth NdFeB waste.

[0003] In the waste recycling process, solid-liquid separation is a key step, which directly affects the efficiency of subsequent processes and the quality of the final product. Traditional solid-liquid separation methods mainly include filtration, centrifugation, sedimentation and other methods. In the treatment of rare earth NdFeB waste, the most commonly used method is to press the rare earth NdFeB waste through a filter to perform extrusion separation. This process is to place the NdFeB waste with a high water content in a special filter container, and force the liquid part to pass through the filter under a certain pressure to be discharged, thereby achieving the purpose of solid-liquid separation. With the extension of time and the increase in frequency of use, the fine particles in the rare earth NdFeB waste will gradually embed into the pores of the filter, causing the filter pores to become clogged, thereby reducing the efficiency of liquid penetration. After the filter pores become clogged, the machine needs to be shut down for maintenance, which greatly reduces the work efficiency of the entire production line. Summary of the invention

[0004] In view of this, the present invention provides a solid-liquid separation device for recycling rare earth NdFeB waste, which can overcome the problem that fine particles in the rare earth NdFeB waste will gradually embed into the pores of the filter, causing the filter holes to be blocked, thereby reducing the efficiency of liquid penetration. After the filter holes are blocked, the machine needs to be shut down for maintenance, which greatly reduces the working efficiency of the entire production line.

[0005] Technical solution: A solid-liquid separation device for recycling rare earth NdFeB waste, including a bracket, a separation cylinder, a filter, an installation box, a stepper motor, a connection block, a vertical shaft, a rotating plate, a rotating box, a nozzle, an air pipe, a rotating mechanism and an extrusion mechanism. There are two brackets, and a separation cylinder is connected between the two brackets for common rotation. The bottom of the separation cylinder is connected with a filter. Pour the rare earth NdFeB waste into the separation cylinder, and the liquid in the rare earth NdFeB waste is discharged through the filter. The rare earth NdFeB waste remains in the separation cylinder for solid-liquid separation. One of the brackets is connected with An installation box is installed on the installation box. The output shaft of the stepper motor is connected to the separation cylinder to drive the separation cylinder to rotate and pour out the rare earth NdFeB waste in the separation cylinder. The upper and lower sides of the installation box are connected with connecting blocks. The two connecting blocks are connected with a vertical shaft that rotates together. The vertical shaft is connected with a rotating plate. The rotating plate is connected with a rotating box. The bottom of the rotating box is connected with a nozzle. The rotating box is connected with an air pipe. The rotating mechanism is used to rotate the rotating box to the top of the separation cylinder. The extrusion mechanism is used to extrude the rare earth NdFeB waste in the separation cylinder.

[0006] In a preferred embodiment of the present invention, the rotating mechanism includes a screw motor, a slider, a spur rack, a horizontal rotating shaft and a spur gear. The screw motor is installed in the installation box, and the slider is slidably connected in the installation box. The screw of the screw motor and the slider are connected by threads, and the slider is connected to the spur rack. The top of the installation box is rotatably connected to the horizontal rotating shaft, the horizontal rotating shaft and the vertical rotating shaft are driven by bevel gears, and the horizontal rotating shaft is connected to the spur gear by a key. The spur rack will mesh with the spur gear during the upward movement.

[0007] In a preferred embodiment of the present invention, the extrusion mechanism includes a connecting plate and a pressing plate, the sliding block is connected to the connecting plate, and the bottom of the connecting plate is connected to a pressing plate for extruding the rare earth NdFeB waste in the separation cylinder.

[0008] In a preferred embodiment of the present invention, it also includes a mounting frame, a sliding frame, a sliding block and a feeding pipe. The mounting frame is connected to the mounting box, the sliding frame is slidably connected to the mounting frame, the sliding frame is connected to the sliding block, and the sliding block is connected to the feeding pipe.

[0009] In a preferred embodiment of the present invention, it also includes a connecting frame, a sliding shaft and a moving plate, the connecting frame is connected to the top of the connecting plate, the sliding shaft is rotatably connected to the connecting frame, the moving plate is connected to the top of the sliding block, a V-shaped groove is opened on the moving plate, and the sliding shaft is located in the V-shaped groove.

[0010] In a preferred embodiment of the present invention, a torsion spring is further included. The vertical rotating shaft is sleeved with the torsion spring, one end of the torsion spring is connected to the connecting block below, and the other end of the torsion spring is connected to the rotating plate.

[0011] In a preferred embodiment of the present invention, the pressing plate is circular, and the contour of the pressing plate matches the contour of the interior of the separation cylinder.

[0012] In a preferred embodiment of the present invention, the feeding pipe is arranged inclined.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The present invention can squeeze the rare earth NdFeB waste in the separation cylinder through the pressing plate, squeeze out the liquid in the rare earth NdFeB waste, so that the solid-liquid separation is more thorough, and the air can be sprayed into the separation cylinder through the nozzle to blow out the rare earth NdFeB waste remaining on the inner wall of the separation cylinder, and the fine rare earth NdFeB waste embedded in the filter can be blown out to avoid clogging of the filter, and the separation cylinder and the filter can be automatically cleaned without stopping, thereby improving the working efficiency of the entire production line.

[0015] 2. Rare earth NdFeB waste can be introduced into the separation cylinder through the feeding pipe, which is convenient for feeding. The feeding pipe can be driven to move through the sliding shaft, and the feeding pipe can be moved away from the top of the separation cylinder to avoid collision between the pressing plate, the rotating box and the feeding pipe. The feeding pipe can be automatically moved away when the pressing plate and the rotating box move, which can improve the continuity of operation and avoid excessive manual operation affecting work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0017] Figure 2 The three-dimensional structural schematic diagram of the separation cylinder, filter screen, installation box and stepper motor of the present invention is shown.

[0018] Figure 3 The three-dimensional structural schematic diagram of the rotary box, the nozzle and the air pipe of the present invention is shown.

[0019] Figure 4 A three-dimensional structural schematic diagram of the rotating mechanism of the present invention is shown.

[0020] Figure 5 A three-dimensional structural schematic diagram of the extrusion mechanism of the present invention is shown.

[0021] Figure 6 The three-dimensional structural schematic diagram of the mounting frame, the sliding frame, the sliding block and the feeding tube of the present invention is shown.

[0022] Figure 7 A three-dimensional structural schematic diagram of the connecting frame and the movable plate of the present invention is shown.

[0023] Figure 8 The three-dimensional structural schematic diagram of the sliding shaft, the moving plate and the V-shaped groove of the present invention is shown.

[0024] Among them, the above-mentioned drawings include the following figure marks: 1. bracket, 2. separation cylinder, 3. filter screen, 4. installation box, 5. stepper motor, 6. connecting block, 7. vertical rotating shaft, 8. rotating plate, 9. rotating box, 10. nozzle, 11. air pipe, 121. screw motor, 122. slider, 123. spur rack, 124. horizontal rotating shaft, 125. spur gear, 131. connecting plate, 132. pressure plate, 141. mounting frame, 142. sliding frame, 143. sliding block, 144. feeding pipe, 151. connecting frame, 152. sliding shaft, 153. moving plate, 154. V-groove, 16. torsion spring. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Reference Figure 1-Figure 5A solid-liquid separation device for recycling rare earth NdFeB waste includes a bracket 1, a separation cylinder 2, a filter screen 3, an installation box 4, a stepper motor 5, a connecting block 6, a vertical shaft 7, a rotating plate 8, a rotating box 9, a nozzle 10, an air pipe 11, a rotating mechanism and an extrusion mechanism. There are two brackets 1, and the two brackets 1 are arranged relative to each other in the front and back. Pads are evenly distributed at the bottom of the bracket 1, which can improve the stability of the bracket 1 and reduce vibration during operation. The two brackets 1 are connected to the separation cylinder 2 for common rotation, and the bottom of the separation cylinder 2 is connected to the filter screen 3. The rear side of the rear bracket 1 is connected to the installation box 4 by bolts, and the lower part of the rear side of the installation box 4 is installed with a stepper motor 5 by bolts. The output shaft of the inlet motor 5 is connected to the rear side of the separation cylinder 2, and the upper and lower sides of the left side of the installation box 4 are connected to connecting blocks 6. The two connecting blocks 6 are connected to a vertical shaft 7 that rotates together. The lower end of the vertical shaft 7 is connected to a rotating plate 8, and the left side of the rotating plate 8 is connected to a rotating box 9. Seven nozzles 10 are connected to the bottom of the rotating box 9. The seven nozzles 10 are used to spray air to the filter 3, so that air can be evenly sprayed onto the filter 3 to ensure that all positions of the filter 3 can be cleaned. Three air pipes 11 are evenly spaced and connected to the rear side of the rotating box 9. The rotating mechanism is used to rotate the rotating box 9 to the top of the separation cylinder 2, and the extrusion mechanism is used to squeeze the rare earth neodymium iron boron waste in the separation cylinder 2.

[0028] Reference Figure 4 The rotating mechanism includes a screw motor 121, a slider 122, a spur rack 123, a horizontal rotating shaft 124 and a spur gear 125. The screw motor 121 is installed in the installation box 4, and the slider 122 is slidably connected in the installation box 4. The screw of the screw motor 121 and the slider 122 are connected by threads. The left side of the slider 122 is connected with a spur rack 123 by bolts. The top of the installation box 4 is rotatably connected with a horizontal rotating shaft 124. The horizontal rotating shaft 124 and the vertical rotating shaft 7 are driven by bevel gears. The horizontal rotating shaft 124 is connected with a spur gear 125 by a key, and the spur rack 123 will mesh with the spur gear 125 during the upward movement.

[0029] Reference Figure 5 The extrusion mechanism includes a connecting plate 131 and a pressure plate 132. The front side of the slider 122 is connected to the connecting plate 131 by bolts. The bottom of the connecting plate 131 is connected to the pressure plate 132. The pressure plate 132 is circular, and the contour of the pressure plate 132 is adapted to the contour inside the separation cylinder 2.

[0030] Reference Figure 4 , and also includes a torsion spring 16. The lower part of the vertical rotating shaft 7 is sleeved with the torsion spring 16. One end of the torsion spring 16 is connected to the connecting block 6 below, and the other end of the torsion spring 16 is connected to the rotating plate 8.

[0031] The staff pours the rare earth NdFeB waste into the separation cylinder 2, and the liquid in the rare earth NdFeB waste is discharged through the filter 3, and the rare earth NdFeB waste remains in the separation cylinder 2 for solid-liquid separation, and then controls the screw motor 121 to drive the slider 122 to move downward, the slider 122 drives the connecting plate 131 to move downward, and the connecting plate 131 drives the pressing plate 132 to move downward, and the pressing plate 132 will enter the separation cylinder 2 and squeeze the rare earth NdFeB waste in the separation cylinder 2 to squeeze out the liquid in the rare earth NdFeB waste, so that the solid-liquid separation is more thorough. After the solid-liquid separation is completed, the screw motor 121 is controlled to drive the slider 122 to move upward. The slider 122 drives the connecting plate 131 and the pressing plate 132 to move upward, and the pressing plate 132 is moved out of the separation cylinder 2. Then the output shaft of the stepper motor 5 is controlled to rotate, and the separation cylinder 2 is driven to rotate. The separation cylinder 2 is rotated 180 degrees, and the rare earth NdFeB waste after solid-liquid separation is poured out. At this time, the slider 122 continues to move upward, and the spur rack 123 moves upward with the slider 122. The spur rack 123 will mesh with the spur gear 125 during the upward movement, and drive the spur gear 125 to rotate. The spur gear 125 drives the horizontal shaft 124 to rotate, and the horizontal shaft 124 drives the vertical shaft 7 to rotate through the bevel gear. , the vertical rotating shaft 7 drives the rotating plate 8 to rotate, the torsion spring 16 is deformed, the rotating plate 8 drives the rotating box 9 to rotate, and the rotating box 9 is rotated to the top of the separation cylinder 2, and then the air pipe 11 is connected to the air pump, and the air enters the rotating box 9 through the air pipe 11, and finally the air is ejected through the nozzle 10, and the air will be sprayed into the separation cylinder 2, and the rare earth NdFeB waste remaining on the inner wall of the separation cylinder 2 will be blown out, and the fine rare earth NdFeB waste embedded in the filter 3 can be blown out to avoid clogging of the filter 3, and the separation cylinder 2 and the filter 3 are automatically cleaned without stopping, thereby improving the working efficiency of the entire production line. After cleaning, the screw motor 1 is controlled 21 drives the slider 122 to move downward, the slider 122 drives the spur rack 123 to move downward, the spur rack 123 drives the spur gear 125 to rotate in the opposite direction, thereby driving the rotating box 9 to rotate in the opposite direction, and turning the rotating box 9 away from the top of the separation cylinder 2. At this time, the torsion spring 16 will gradually return to its original state. After the spur rack 123 and the spur gear 125 are disengaged, the torsion spring 16 completely returns to its original state. The torsion spring 16 can keep the rotating plate 8 and the rotating box 9 stationary, and even if someone accidentally touches the rotating box 9, the rotating box 9 will be reset under the action of the torsion spring 16, ensuring that the rotating box 9 can be accurately rotated to the top of the separation cylinder 2 next time.

[0032] Reference Figure 6, also includes a mounting frame 141, a sliding frame 142, a sliding block 143 and a feeding pipe 144. The mounting frame 141 is connected to the middle part of the right side of the mounting box 4 by bolts, the sliding frame 142 is slidably connected to the front side of the mounting frame 141, the sliding frame 142 is connected to the left side of the sliding frame 142, and the sliding block 143 is connected to the feeding pipe 144. The feeding pipe 144 is inclined to ensure that the rare earth NdFeB waste can slide into the separation cylinder 2 more smoothly.

[0033] Reference Figure 7 and Figure 8 , also includes a connecting frame 151, a sliding shaft 152 and a moving plate 153. The top of the connecting plate 131 is connected to the connecting frame 151 by bolts, and the front and rear sides of the lower part of the connecting frame 151 are rotatably connected to the sliding shafts 152. The top of the sliding block 143 is connected to the moving plate 153 by bolts. The front and rear sides of the moving plate 153 are opened with V-shaped grooves 154. The two sliding shafts 152 are respectively located in the two V-shaped grooves 154. The moving plate 153 is driven to move by the two sliding shafts 152, so that the moving plate 153 can be evenly stressed, ensuring that the moving plate 153 can move smoothly.

[0034] The staff can connect the feeding pipe 144 to the rare earth NdFeB waste feeding pipe, so that the rare earth NdFeB waste can fall into the separation cylinder 2 through the feeding pipe 144, which is convenient for feeding. In the initial state, the sliding shaft 152 is located in the middle position of the V-shaped groove 154. Therefore, when the connecting plate 131 moves downward, it will drive the connecting frame 151 and the sliding shaft 152 to move downward. The sliding shaft 152 moves in the V-shaped groove 154 and pushes the moving plate 153 to move to the right. The moving plate 153 drives the sliding block 143 and the feeding pipe 144 to move to the right, and the feeding pipe 144 is moved away from the top of the separation cylinder 2 to avoid collision between the pressing plate 132 and the feeding pipe 144. When the connecting plate 131 moves upward, it will drive the connecting frame 151 and the sliding shaft 1 52 moves upward, the sliding shaft 152 moves in the V-shaped groove 154, and pushes the moving plate 153 to move to the left, and the moving plate 153 drives the sliding block 143 and the feeding tube 144 to move to the left, and moves the feeding tube 144 to the top of the separation cylinder 2. When the sliding shaft 152 moves to the middle position of the V-shaped groove 154, the sliding shaft 152 will push the moving plate 153 to move to the right, and the moving plate 153 drives the sliding block 143 and the feeding tube 144 to move to the right, and move the feeding tube 144 away from the top of the separation cylinder 2 to avoid collision between the rotating box 9 and the feeding tube 144, and automatically move the feeding tube 144 away when the pressing plate 132 and the rotating box 9 move, which can improve the continuity of the operation and avoid excessive manual operation affecting the work efficiency.

[0035] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. They only express the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0036] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A solid-liquid separation device for recycling rare earth NdFeB waste, comprising a support (1), a separation cylinder (2) and a filter screen (3), wherein there are two supports (1), the separation cylinder (2) is connected to the two supports (1) for common rotation, the bottom of the separation cylinder (2) is connected to the filter screen (3), the rare earth NdFeB waste is poured into the separation cylinder (2), the liquid in the rare earth NdFeB waste is discharged through the filter screen (3), and the rare earth NdFeB waste remains in the separation cylinder (2) for solid-liquid separation, characterized in that: The invention also comprises an installation box (4), a stepper motor (5), a connecting block (6), a vertical rotating shaft (7), a rotating plate (8), a rotating box (9), a nozzle (10), an air pipe (11), a rotating mechanism and an extruding mechanism, wherein one of the brackets (1) is connected to the installation box (4), the installation box (4) is equipped with a stepper motor (5), the output shaft of the stepper motor (5) is connected to the separation cylinder (2) to drive the separation cylinder (2) to rotate, pour out the rare earth neodymium iron boron waste in the separation cylinder (2), and install the installation box (1) to the separation cylinder (2). The upper and lower sides of the box (4) are connected to connecting blocks (6), the two connecting blocks (6) are connected to a vertical shaft (7) for common rotation, the vertical shaft (7) is connected to a rotating plate (8), the rotating plate (8) is connected to a rotating box (9), the bottom of the rotating box (9) is connected to a nozzle (10), the rotating box (9) is connected to an air pipe (11), the rotating mechanism is used to rotate the rotating box (9) to the top of the separation cylinder (2), and the extrusion mechanism is used to extrude the rare earth neodymium iron boron waste in the separation cylinder (2).

2. A solid-liquid separation device for recycling rare earth NdFeB waste as claimed in claim 1, characterized in that: The rotating mechanism comprises a screw motor (121), a slider (122), a spur rack (123), a horizontal rotating shaft (124) and a spur gear (125); the screw motor (121) is installed in the installation box (4); the slider (122) is slidably connected in the installation box (4); the screw of the screw motor (121) and the slider (122) are connected by threads; the slider (122) is connected with the spur rack (123); the top of the installation box (4) is rotatably connected with the horizontal rotating shaft (124); the horizontal rotating shaft (124) and the vertical rotating shaft (7) are driven by bevel gears; the horizontal rotating shaft (124) is connected with the spur gear (125) by a key; the spur rack (123) meshes with the spur gear (125) in the process of moving upward.

3. A solid-liquid separation device for recycling rare earth NdFeB waste as claimed in claim 2, characterized in that: The extrusion mechanism comprises a connecting plate (131) and a pressing plate (132); the sliding block (122) is connected to the connecting plate (131); and the bottom of the connecting plate (131) is connected to the pressing plate (132) for extruding the rare earth NdFeB waste in the separation cylinder (2).

4. A solid-liquid separation device for recycling rare earth NdFeB waste as claimed in claim 3, characterized in that: The utility model also comprises a mounting frame (141), a sliding frame (142), a sliding block (143) and a feeding pipe (144); the mounting frame (141) is connected to the mounting box (4); the sliding frame (142) is slidably connected to the mounting frame (141); the sliding frame (142) is connected to the sliding block (143); and the feeding pipe (144) is connected to the sliding block (143).

5. A solid-liquid separation device for recycling rare earth NdFeB waste as claimed in claim 4, characterized in that: The invention also comprises a connecting frame (151), a sliding shaft (152) and a moving plate (153); the connecting frame (151) is connected to the top of the connecting plate (131); the sliding shaft (152) is rotatably connected to the connecting frame (151); the moving plate (153) is connected to the top of the sliding block (143); a V-shaped groove (154) is formed on the moving plate (153); and the sliding shaft (152) is located in the V-shaped groove (154).

6. A solid-liquid separation device for recycling rare earth NdFeB waste as claimed in claim 5, characterized in that: It also includes a torsion spring (16), which is sleeved on the vertical rotating shaft (7), one end of the torsion spring (16) is connected to the lower connecting block (6), and the other end of the torsion spring (16) is connected to the rotating plate (8).

7. A solid-liquid separation device for recycling rare earth NdFeB waste as claimed in claim 6, characterized in that: The pressing plate (132) is circular, and the contour of the pressing plate (132) matches the contour inside the separation cylinder (2).

8. A solid-liquid separation device for recycling rare earth NdFeB waste as claimed in claim 7, characterized in that: The feeding pipe (144) is arranged to be inclined.

Images