Device for removing oxalate from sodium aluminate solution

Abstract

The utility model discloses a device for removing oxalate from sodium aluminate solution, which comprises a box body, supporting legs arranged at the four corners of the bottom of the box body, a feed pipe and a liquid outlet pipe respectively inserted and fixed at the top and the bottom of the right side of the box body, and a cam driven by a driving motor to rotate, when the cam collides with the lifting plate, the filter cylinder can be shaken up and down, so that solid-liquid separation is realized under the action of the filter plate, and the liquid stains adhered to the surface of the filter residue on the filter plate can be shaken off through the shaking of the filter cylinder, thereby improving the solid-liquid separation effect. After the chuck is moved to the left by the starting hydraulic push rod, the square hole round pipe can be sleeved on the transmission square rod, and then the filter cylinder can be rotated by 180 degrees by starting the servo motor, the filter residue in the filter cylinder can be poured out and fall onto the conveyor belt, the filter residue can be conveyed through the circulating rotation of the conveyor belt, thereby improving the convenience of filter residue discharge.

Description

Technical Field

[0001] This utility model relates to the field of oxalate removal technology, and in particular to a device for removing oxalate from sodium aluminate solution. Background Technology

[0002] Because bauxite contains organic matter, during the alumina production process, due to the high-temperature heating section, this organic matter is converted into oxalate in the Bayer process and accumulates throughout the alumina production flow. When the concentration of oxalate reaches a certain level, it harms alumina production, making it difficult for red mud to settle and causing problems such as reduced quality of seed decomposition products. Therefore, a device for removing oxalate from sodium aluminate solution is needed to solve these problems.

[0003] However, existing devices for removing oxalate from sodium aluminate solutions are wasteful because they do not collect enough liquid residue adhering to the filter residue surface during solid-liquid separation of oxalate. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a device for removing oxalate from sodium aluminate solution.

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] A device for removing oxalate from sodium aluminate solution includes a housing and support legs located at the four corners of the bottom of the housing. An inlet pipe and an outlet pipe are respectively fixed to the top and bottom right sides of the housing. A filter cylinder is installed inside the housing, and a filter plate is installed near the lower layer of the filter cylinder's inner cavity. A discharge slot is opened at the top of the filter cylinder, and a larger discharge slot is opened at the bottom of the housing. A sealing mechanism is provided at the top of the discharge slot. A shaking mechanism is provided on the right side of the filter cylinder, and a traction mechanism is provided on the left side. A first circular hole is opened at the top right side of the filter cylinder, and a first connecting pipe slides through the inner cavity of the first circular hole. The other end of the first connecting pipe is inserted into the inner cavity of the inlet pipe. A second circular hole is opened at the bottom right side of the filter cylinder, and a second connecting pipe slides through the inner cavity of the second circular hole. The other end of the second connecting pipe is inserted into the inner cavity of the outlet pipe.

[0007] Furthermore, two load-bearing frames are welded to both the left and right sides of the box, and the same roller is rotatably connected between two adjacent load-bearing frames, and the same conveyor belt is drivingly connected between the two rollers.

[0008] Furthermore, the sealing mechanism includes an arc-shaped cover plate, which is fitted onto the top of the filter cylinder. Two symmetrical vertical rods are fixedly connected to the top of the arc-shaped cover plate. Two symmetrical first through holes are opened on the top of the housing. The top ends of the two vertical rods pass through the inner cavities of adjacent first through holes and are fixedly connected to connecting blocks. The outer walls of the two vertical rods are fitted with first springs, and the two ends of the first springs are fixedly connected to the connecting blocks and the housing, respectively.

[0009] Furthermore, an air pump is installed at the top of the inner cavity of the box near the left side, and an air inlet pipe is fixedly connected to the air pump. A positioning hole adapted to the air pipe is opened on the arc-shaped cover plate, and the other end of the air pipe is inserted into the inner cavity of the positioning hole. An electric heating plate is installed on the arc-shaped cover plate. A water tank is fixedly connected to the top left side of the box, and a semiconductor cooling chip is installed on the left side wall of the water tank. A liquid storage tank is fixedly connected to the bottom of the water tank, and several vent holes are opened on the left side near the top of the liquid storage tank. A heat exchange copper pipe is fixedly connected to the air outlet pipe of the air pump, and the other end of the heat exchange copper pipe passes through the left side wall of the box and the inner cavity of the water tank, and extends to the inner cavity of the liquid storage tank. A drain pipe is inserted and fixedly connected to the bottom left side of the liquid storage tank, and a control valve is installed on the drain pipe. A water injection pipe is inserted and fixedly connected to the top of the water tank.

[0010] Furthermore, the shaking mechanism includes a fixed column, one end of which is fixedly connected to the center of the right side of the filter cylinder. A fixing hole is formed at the center of the other end of the fixed column, and a matching traction rod is inserted into the inner cavity of the fixing hole. A lifting plate is fixedly connected to the right end of the traction rod, and a cam is provided at the bottom of the lifting plate. A rotating shaft is fixedly connected to the right side of the cam near the top. A drive motor is located on the right side of the housing near the bottom, and a bearing is provided on the right wall of the housing. The right end of the rotating shaft passes through the inner cavity of the bearing. The lifting plate is fixedly connected to the power output end of the drive motor. A slider is fixedly connected to the right side of the lifting plate, and a groove adapted to the slider is opened on the right wall of the inner cavity of the box. The slider is slidably connected to the inner cavity of the groove. A second through hole is opened on the slider, and a first limiting rod adapted to it slides through the inner cavity of the second through hole. The two ends of the first limiting rod are fixedly connected to the top and bottom of the inner cavity of the groove, respectively. A second spring is sleeved on the outer wall of the first limiting rod, and the two ends of the second spring are fixedly connected to the inner wall of the groove and the slider, respectively.

[0011] Furthermore, the traction mechanism includes a square-hole round tube, one end of which is fixedly connected to the left center of the filter cylinder. An annular plate is fitted and fixed to the outer wall of the square-hole round tube, and an arc-shaped chuck is fitted at the bottom outer side of the annular plate. A hydraulic push rod is provided on the left side of the box near the bottom, and the power end of the hydraulic push rod is fixedly connected to the left side wall of the arc-shaped chuck.

[0012] Furthermore, a blind hole is provided at the top of the annular plate, and a second limiting rod that is adapted to it is inserted into the inner cavity of the blind hole. A third through hole is provided at the top of the box near the left side, and the top end of the second limiting rod passes through the inner cavity of the third through hole and is fixedly connected to a traction plate. An electric rod is provided at the top of the box near the left side, and the power end of the electric rod is fixedly connected to the lower surface of the traction plate.

[0013] Furthermore, a transmission rod adapted to the square hole tube is provided on the left side, and the left end of the transmission rod is fixedly connected to the turntable. A servo motor is provided at the middle position on the left side of the box, and the power output end of the servo motor is fixedly connected to the center of the left side of the turntable.

[0014] Furthermore, the bottom of the inner cavity of the box is fixedly connected to two baffles with the central axis of the material slot as the axis of symmetry.

[0015] Furthermore, an L-shaped rod is fixedly connected to the top of the lifting plate, and the other end of the L-shaped rod is fixedly connected to the first connecting pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The cam is driven by a drive motor to rotate. When the cam collides with the lifting plate, it causes the filter cylinder to shake up and down. When the solution is fed into the upper part of the filter cylinder through the feed pipe, the solid and liquid are separated by the action of the filter plate. The liquid is then discharged through the second connecting pipe and the liquid outlet pipe. The shaking of the filter cylinder can effectively shake off the liquid stains adhering to the surface of the filter cake on the filter plate, thereby improving the solid-liquid separation effect. After the hydraulic push rod is activated to pull the chuck to the left, the square hole round tube can be connected to the transmission square rod. Then, the filter cylinder is rotated 180 degrees by the servo motor, which can pour out the filter cake in the filter cylinder and drop it onto the conveyor belt. The filter cake can be transported by the cyclic rotation of the conveyor belt, thereby improving the convenience of filter cake discharge.

[0018] 2. The electric heating plate can heat the filter residue in the filter cylinder, so that the liquid stains on the surface of the filter residue are heated to generate water vapor. The operation of the air pump can draw the rising water vapor into the heat exchange pipe. After flowing through the water tank, the water vapor is cooled and liquefied before flowing into the liquid storage tank, thereby further improving the adequacy of water vapor collection.

[0019] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main view structure of this embodiment;

[0021] Figure 2 This is a schematic cross-sectional view of the box structure in this embodiment;

[0022] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0023] In the diagram: 1. Box body; 2. Feed pipe; 3. Discharge pipe; 4. Filter cylinder; 5. First connecting pipe; 6. Second connecting pipe; 7. Discharge slot; 8. Arc-shaped cover plate; 9. Heating plate; 10. Vertical rod; 11. Connecting block; 12. First spring; 13. Filter plate; 14. Fixing column; 15. Fixing hole; 16. Traction rod; 17. Lifting plate; 18. L-shaped rod; 19. Cam; 20. Drive motor; 21. Rotating shaft; 22. Hydraulic push rod; 23. Arc-shaped chuck; 24. Annular plate; 25. Square hole round tube; 26. Blind hole 27. Second limit rod; 28. Traction plate; 29. ​​Electric rod; 30. Servo motor; 31. Turntable; 32. Transmission square rod; 33. Air pump; 34. Air extraction pipe; 35. Positioning hole; 36. Water tank; 37. Heat exchange copper pipe; 38. Liquid storage tank; 39. Drain pipe; 40. Water injection pipe; 41. Semiconductor cooling chip; 42. Material unloading slot; 43. Baffle; 44. Support frame; 45. Roller; 46. Conveyor belt; 47. Support leg; 48. Slider; 49. Slide groove; 50. First limit rod; 51. Second spring. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figures 1 to 3 The present invention provides the following technical solution:

[0028] A device for removing oxalate from sodium aluminate solution includes a housing 1 and support legs 47 located at the four corners of the bottom of the housing 1. An inlet pipe 2 and an outlet pipe 3 are respectively inserted and fixed to the top and bottom right sides of the housing 1. A filter cylinder 4 is installed inside the housing 1, and a filter plate 13 is installed near the lower layer inside the filter cylinder 4. A discharge slot 7 is opened at the top of the filter cylinder 4, and a discharge slot 42 larger than the discharge slot 7 is opened at the bottom of the housing 1. A sealing mechanism is provided at the top of the discharge slot 7. A shaking mechanism is provided on the right side of the filter cylinder 4. A traction mechanism is provided on the left side of the filter cylinder 4. A first circular hole is provided at the top right side of the filter cylinder 4, and a first connecting pipe 5 slides through the inner cavity of the first circular hole. The other end of the first connecting pipe 5 is inserted into the inner cavity of the feed pipe 2. A second circular hole is provided at the bottom right side of the filter cylinder 4, and a second connecting pipe 6 slides through the inner cavity of the second circular hole. The other end of the second connecting pipe 6 is inserted into the inner cavity of the liquid outlet pipe 3. The first connecting pipe 5 and the second connecting pipe 6 can move up and down in the inner cavities of the feed pipe 2 and the liquid outlet pipe 3, so as not to affect the vertical shaking of the filter cylinder 4.

[0029] Two load-bearing frames 44 are welded to the left and right sides of the box body 1, and the same roller 45 is rotatably connected between the two adjacent load-bearing frames 44. The same conveyor belt 46 is connected between the two rollers 45. The filter residue can be fed by the conveyor belt 46, thereby improving the convenience of filter residue discharge.

[0030] The sealing mechanism includes an arc-shaped cover plate 8, which is fitted onto the top of the filter cylinder 4. Two symmetrical vertical rods 10 are fixedly connected to the top of the arc-shaped cover plate 8. Two symmetrical first through holes are opened on the top of the housing 1. The top ends of the two vertical rods 10 pass through the inner cavity of the adjacent first through holes and are fixedly connected to connecting blocks 11. The outer walls of the two vertical rods 10 are fitted with first springs 12, and the two ends of the first springs 12 are fixedly connected to the connecting blocks 11 and the housing 1, respectively. Through the arrangement of the vertical rods 10, connecting blocks 11 and first springs 12, the arc-shaped cover plate 8 can be tightly fitted onto the outer wall of the filter cylinder 4, thereby preventing the filter residue from being shaken out of the discharge slot 7 during the shaking process of the filter cylinder 4.

[0031] An air pump 33 is installed near the left side of the top of the inner cavity of the housing 1, and an air inlet pipe 34 is fixedly connected to the air inlet of the air pump 33. A positioning hole 35 adapted to the air inlet pipe 34 is opened on the arc-shaped cover plate 8, and the other end of the air inlet pipe 34 is inserted into the inner cavity of the positioning hole 35. An electric heating plate 9 is installed on the arc-shaped cover plate 8. A water tank 36 is fixedly connected to the top left side of the housing 1, and a semiconductor cooling chip 41 is installed on the left side wall of the water tank 36. A liquid storage tank 38 is fixedly connected to the bottom of the water tank 36, and several vent holes are opened near the top left side of the liquid storage tank 38 to discharge the gas inside the liquid storage tank 38. The air outlet pipe of the air pump 33 is fixedly connected to the... A heat exchange copper tube 37 is connected, and the other end of the heat exchange copper tube 37 passes through the left side wall of the box 1 and the inner cavity of the water tank 36, and extends to the inner cavity of the liquid storage tank 38. A drain pipe 39 is inserted and fixed at the bottom left side of the liquid storage tank 38, and a control valve is installed on the drain pipe 39. A water injection pipe 40 is inserted and fixed at the top of the water tank 36. The filter residue in the filter cylinder 4 can be heated by the setting of the electric heating plate 9, and the heated gas is transported into the heat exchange copper tube 37. When the hot gas flows through the inner cavity of the water tank 36 in the heat exchange copper tube 37, the hot gas can be cooled and liquefied, and the liquefied liquid is collected into the liquid storage tank 38, further improving the adequacy of liquid collection.

[0032] The vibration mechanism includes a fixed column 14, one end of which is fixedly connected to the center of the right side of the filter cylinder 4. A fixing hole 15 is provided at the center of the other end of the fixed column 14, and a matching traction rod 16 is inserted into the inner cavity of the fixing hole 15. A lifting plate 17 is fixedly connected to the right end of the traction rod 16, and a cam 19 is provided at the bottom of the lifting plate 17. A rotating shaft 21 is fixedly connected to the right side of the cam 19 near the top. A drive motor 20 is provided on the right side of the housing 1 near the bottom, and a bearing is provided on the right wall of the housing 1. The right end of the rotating shaft 21 passes through the inner cavity of the bearing and is fixedly connected to the power output end of the drive motor 20. A slider 4 is fixedly connected to the right side of the lifting plate 17. 8. The inner right wall of the housing 1 is provided with a groove 49 that matches the slider 48. The slider 48 is slidably connected to the inner cavity of the groove 49. The slider 48 is provided with a second through hole, and the inner cavity of the second through hole is slidably connected to a first limiting rod 50 that matches it. The two ends of the first limiting rod 50 are fixedly connected to the top and bottom of the inner cavity of the groove 49, respectively. The outer wall of the first limiting rod 50 is fitted with a second spring 51, and the two ends of the second spring 51 are fixedly connected to the inner wall of the groove 49 and the slider 48, respectively. The cam 19 is rotated by the drive motor 20 and the lifting plate 17 is driven to reciprocate and shake, thereby driving the filter cylinder 4 to shake synchronously, so as to fully shake off the liquid stains on the surface of the filter residue.

[0033] The traction mechanism includes a square-hole tube 25, one end of which is fixedly connected to the center of the left side of the filter cylinder 4. An annular plate 24 is fixedly fitted onto the outer wall of the square-hole tube 25, and an arc-shaped chuck 23 is fitted onto the bottom of the outer side of the annular plate 24. A hydraulic push rod 22 is provided on the left side of the housing 1 near the bottom, and the power end of the hydraulic push rod 22 is fixedly connected to the left side wall of the arc-shaped chuck 23. The arc-shaped chuck 23 is pulled horizontally by the hydraulic push rod 22, which drives the filter cylinder 4 to move synchronously, thereby aligning the discharge slot 7 with the unloading slot 42.

[0034] The top of the annular plate 24 is provided with a blind hole 26, and a matching second limiting rod 27 is inserted into the inner cavity of the blind hole 26. The top of the box 1 is provided with a third through hole near the left side, and the top of the second limiting rod 27 passes through the inner cavity of the third through hole and is fixedly connected to a traction plate 28. The top of the box 1 is provided with an electric rod 29 near the left side, and the power end of the electric rod 29 is fixedly connected to the lower surface of the traction plate 28. By setting the second limiting rod 27, the balance of the left and right sides of the filter cylinder 4 can be improved when it shakes vertically.

[0035] A transmission rod 32 is provided on the left side of the square hole tube 25, and the left end of the transmission rod 32 is fixedly connected to the turntable 31. A servo motor 30 is provided at the middle position on the left side of the housing 1, and the power output end of the servo motor 30 is fixedly connected to the center of the left side of the turntable 31. The servo motor 30 drives the turntable 31 to rotate and drives the transmission rod 32 to rotate. The rotation of the transmission rod 32 can drive the square hole tube 25 to rotate, thereby driving the filter cylinder 4 to flip, which makes it easier to pour out the filter residue inside the filter cylinder 4.

[0036] Two baffles 43 are fixedly connected to the bottom of the inner cavity of the box body 1, with the central axis of the feeding slot 42 as the axis of symmetry, so that the filter residue can be fully discharged from the feeding slot 42.

[0037] An L-shaped rod 18 is fixedly connected to the top of the lifting plate 17, and the other end of the L-shaped rod 18 is fixedly connected to the first connecting pipe 5, which can support the first connecting pipe 5 when the filter cylinder 4 moves horizontally to the left.

[0038] Working Principle: In use, the liquid material is first injected into the filter cylinder 4 through the feed pipe 2 and the first connecting pipe 5. The filter plate 13 filters the liquid material, achieving solid-liquid separation. The liquid is discharged through the second connecting pipe 6 and the outlet pipe 3. When the liquid flow rate in the outlet pipe 3 slows down, the drive motor 20 is started, driving the cam 19 to rotate. When the cam 19 collides with the lifting plate 17, it pushes the lifting plate 17 upward against the resistance of the second spring 51, thereby driving the filter cylinder 4 upward. After the cam 19 moves away from the lifting plate 17, the filter cylinder 4 falls rapidly under the rebound force of the second spring 51. Thus, when the drive motor 20 continues to work, the filter cylinder 4 vibrates up and down, thereby removing the filter residue in the filter cylinder 4. The liquid stains are shaken off, and the operation of the electric heating plate 9 can heat the filter residue in the filter cylinder 4 to form water vapor. The operation of the air pump 33 can transport the water vapor into the heat exchange copper tube 37. After the water vapor flows through the water tank 36 in the heat exchange copper tube 37, it is cooled and liquefied and flows into the liquid storage tank 38. When it is necessary to discharge the filter residue, the hydraulic push rod 22 is activated to pull the arc-shaped chuck 23 to move horizontally to the left, and drive the square hole round tube 25 to be sleeved on the outer wall of the transmission square rod 32. When the servo motor 30 is activated and drives the turntable 31 to rotate, the filter cylinder 4 can be rotated 180 degrees through the sleeve of the transmission square rod 32 and the square hole round tube 25. The filter residue can be poured out from the discharge slot 7 and fall onto the conveyor belt 46 after passing through the discharge slot 42 and transported to the designated position.

[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A device for removing oxalate from sodium aluminate solution, comprising a housing (1) and support legs (47) disposed at the four corners of the bottom of the housing (1), characterized in that: The top and bottom right sides of the housing (1) are respectively connected and fixed with a feed pipe (2) and a liquid outlet pipe (3). The inner cavity of the housing (1) is provided with a filter cylinder (4), and a filter plate (13) is provided near the lower part of the inner cavity of the filter cylinder (4). A discharge slot (7) is opened at the top of the filter cylinder (4), and a discharge slot (42) larger than the discharge slot (7) is opened at the bottom of the housing (1). A sealing mechanism is provided at the top of the discharge slot (7). The right side of the filter cylinder (4) is provided with a... The filter cylinder (4) has a shaking mechanism and a traction mechanism on the left side. A first circular hole is opened at the top right side of the filter cylinder (4), and a first connecting pipe (5) slides through the inner cavity of the first circular hole. The other end of the first connecting pipe (5) is inserted into the inner cavity of the feed pipe (2). A second circular hole is opened at the bottom right side of the filter cylinder (4), and a second connecting pipe (6) slides through the inner cavity of the second circular hole. The other end of the second connecting pipe (6) is inserted into the inner cavity of the liquid outlet pipe (3).

2. The apparatus for removing oxalate from sodium aluminate solution as described in claim 1, characterized in that: The box (1) has two front-to-back load-bearing frames (44) welded on both the left and right sides, and the two adjacent load-bearing frames (44) are rotatably connected by the same roller (45), and the two rollers (45) are connected by the same conveyor belt (46).

3. The apparatus for removing oxalate from sodium aluminate solution as described in claim 1, characterized in that: The sealing mechanism includes an arc-shaped cover plate (8), which is fitted to the top of the filter cylinder (4). The top of the arc-shaped cover plate (8) is fixedly connected to two left-right symmetrical vertical rods (10). The top of the box body (1) has two left-right symmetrical first through holes. The top ends of the two vertical rods (10) pass through the inner cavity of the adjacent first through holes and are fixedly connected to a connecting block (11). The outer walls of the two vertical rods (10) are fitted with first springs (12), and the two ends of the first springs (12) are fixedly connected to the connecting block (11) and the box body (1) respectively.

4. The apparatus for removing oxalate from sodium aluminate solution as described in claim 3, characterized in that: An air pump (33) is installed near the left side of the top of the inner cavity of the box (1), and an air inlet pipe (34) is fixedly connected to the air inlet of the air pump (33). A positioning hole (35) adapted to the air pipe (34) is opened on the arc-shaped cover plate (8), and the other end of the air pipe (34) is inserted into the inner cavity of the positioning hole (35). An electric heating plate (9) is installed on the arc-shaped cover plate (8). A water tank (36) is fixedly connected to the top left side of the box (1), and a semiconductor cooling chip (41) is installed on the left side wall of the water tank (36). 6) The bottom is fixedly connected to a liquid storage tank (38), and several vent holes are opened on the left side of the liquid storage tank (38) near the top. The exhaust pipe of the air pump (33) is fixedly connected to a heat exchange copper pipe (37), and the other end of the heat exchange copper pipe (37) passes through the left side wall of the box body (1) and the inner cavity of the water tank (36), and extends to the inner cavity of the liquid storage tank (38). A drain pipe (39) is inserted and fixed at the bottom left side of the liquid storage tank (38), and a control valve is provided on the drain pipe (39). A water injection pipe (40) is inserted and fixed at the top of the water tank (36).

5. The apparatus for removing oxalate from sodium aluminate solution as described in claim 1, characterized in that: The shaking mechanism includes a fixed column (14), one end of which is fixedly connected to the center of the right side of the filter cylinder (4). A fixing hole (15) is provided at the center of the other end of the fixed column (14), and a matching traction rod (16) is inserted into the inner cavity of the fixing hole (15). A lifting plate (17) is fixedly connected to the right end of the traction rod (16), and a cam (19) is provided at the bottom of the lifting plate (17). A rotating shaft (21) is fixedly connected to the right side of the cam (19) near the top. A drive motor (20) is provided on the right side of the housing (1) near the bottom, and a bearing is provided on the right wall of the housing (1). The right end of the rotating shaft (21) passes through the inner cavity of the bearing and is connected to the drive motor. The power output end of the motor (20) is fixedly connected. The right side of the lifting plate (17) is fixedly connected to the slider (48). The inner wall of the box (1) is provided with a groove (49) that matches the slider (48). The slider (48) is slidably connected to the inner cavity of the groove (49). The slider (48) is provided with a second through hole. The inner cavity of the second through hole is slidably connected to a first limiting rod (50) that matches it. The two ends of the first limiting rod (50) are fixedly connected to the top and bottom of the inner cavity of the groove (49) respectively. The outer wall of the first limiting rod (50) is fitted with a second spring (51). The two ends of the second spring (51) are fixedly connected to the inner wall of the groove (49) and the slider (48) respectively.

6. The apparatus for removing oxalate from sodium aluminate solution as described in claim 1, characterized in that: The traction mechanism includes a square-hole tube (25), one end of which is fixedly connected to the center of the left side of the filter cylinder (4). An annular plate (24) is fixedly fitted on the outer wall of the square-hole tube (25), and an arc-shaped chuck (23) is fitted on the bottom of the outer side of the annular plate (24). A hydraulic push rod (22) is provided on the left side of the box (1) near the bottom, and the power end of the hydraulic push rod (22) is fixedly connected to the left side wall of the arc-shaped chuck (23).

7. The apparatus for removing oxalate from sodium aluminate solution as described in claim 6, characterized in that: The top of the annular plate (24) is provided with a blind hole (26), and a second limiting rod (27) adapted to it is inserted into the inner cavity of the blind hole (26). The top of the box (1) is provided with a third through hole near the left side, and the top end of the second limiting rod (27) passes through the inner cavity of the third through hole and is fixedly connected to a traction plate (28). The top of the box (1) is provided with an electric rod (29) near the left side, and the power end of the electric rod (29) is fixedly connected to the lower surface of the traction plate (28).

8. The apparatus for removing oxalate from sodium aluminate solution as described in claim 6, characterized in that: A transmission rod (32) is provided on the left side of the square hole tube (25), and the left end of the transmission rod (32) is fixedly connected to the turntable (31). A servo motor (30) is provided at the middle position on the left side of the box (1), and the power output end of the servo motor (30) is fixedly connected to the center of the left side of the turntable (31).

9. The apparatus for removing oxalate from sodium aluminate solution as described in claim 1, characterized in that: The bottom of the inner cavity of the box (1) is fixedly connected to two baffles (43) with the central axis of the material slot (42) as the axis of symmetry.

10. The apparatus for removing oxalate from sodium aluminate solution as described in claim 5, characterized in that: The top of the lifting plate (17) is fixedly connected to an L-shaped rod (18), and the other end of the L-shaped rod (18) is fixedly connected to the first connecting pipe (5).

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