An online aluminum removal equipment based on rare earth extraction and separation system

Abstract

The present invention belongs to the technical field of high-purity rare earth metal and product manufacturing, and is particularly an online aluminum removal device based on a rare earth extraction and separation system. The device comprises a bracket, the bracket is fixedly connected to an extraction kettle, the extraction kettle is fixedly connected to an outer shell, the extraction kettle and the outer shell are jointly provided with a centrifugal extraction module for separating a heavy phase and a light phase, the centrifugal extraction module is provided with a centrifugal chamber, the extraction kettle is fixedly connected to a connecting pipe, the extraction kettle is provided with a mixing chamber, the extraction kettle is rotatably connected to a rotating shell in the mixing chamber, and a sealing piston is slidably and rotatably connected to the rotating shell. The present invention performs stratification treatment by injecting the mixed liquid in the mixing chamber into the centrifugal extraction module in batches, and at the same time, the sealing piston seals the connecting pipe, isolating the mixing chamber from the centrifugal extraction module, thereby improving the stratification rate of the mixed liquid in the centrifugal extraction module.

Description

Technical Field

[0001] The present invention complies with the technical field of high-purity rare earth metal and product manufacturing, and in particular relates to an online aluminum removal device based on a rare earth extraction and separation system. Background Art

[0002] Rare earth elements are a collective term for 17 chemical elements, including the lanthanides, scandium, and yttrium. Due to their unique electronic structures, rare earth elements exhibit exceptional physical and chemical properties, holding an irreplaceable position in modern high-tech. They are widely used in electronic devices, optical materials, magnetic materials, and other fields, playing a particularly key role in high-performance permanent magnets, fluorescent materials, and catalytic reactions. However, the extraction process of rare earth ores often contains impurities such as aluminum, which can significantly affect the purity and performance of rare earth products. Aluminum, in particular, if not effectively removed, can adversely affect the subsequent preparation of high-purity rare earth materials. Therefore, efficient removal of aluminum impurities has become a key technical step in the rare earth purification process.

[0003] Currently, solvent extraction, as a mainstream chemical separation technology, is widely used in the separation of rare earth elements from impurity elements. Centrifugal extractors, as highly efficient liquid-liquid separation equipment, play a crucial role in rare earth extraction. Their operating principle is as follows: the rare earth solution and extractant are first thoroughly mixed in a mixing chamber before entering the centrifugal chamber. Under the centrifugal force generated by high-speed rotation, the mixed liquid separates into a heavy phase and a light phase, which are then discharged separately, effectively separating impurities such as aluminum. However, during operation, existing centrifugal extractors maintain a constant connection between the mixing chamber and the centrifugal chamber. This causes the mixed liquid in the centrifugal chamber to be disturbed by the continuous flow of liquid in the mixing chamber during the separation process, making it difficult to quickly form a stable and clear interface between the heavy and light phases. This, in turn, affects the separation efficiency of the aluminum element and reduces the purity of the final rare earth solution. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an online aluminum removal device based on a rare earth extraction and separation system.

[0005] The technical implementation scheme of the present invention is: an online aluminum removal equipment based on a rare earth extraction and separation system, comprising a bracket, the bracket is fixedly connected to an extraction kettle, the extraction kettle is fixedly connected to an outer shell, the extraction kettle and the outer shell are jointly provided with a centrifugal extraction module for separating a heavy phase and a light phase, the centrifugal extraction module is provided with a centrifugal chamber, the extraction kettle is fixedly connected to a connecting pipe, the extraction kettle is provided with a mixing chamber, the mixing chamber is connected to the centrifugal chamber in the centrifugal extraction module through the connecting pipe, the extraction kettle is rotatably connected to a rotating shell in the mixing chamber, a blocking piston is slidably and rotatably connected in the rotating shell, the blocking piston is used to control the communication state between the centrifugal chamber in the centrifugal extraction module and the mixing chamber, the bracket is fixedly connected to a driving member, the telescopic end of the driving member is fixedly connected to the blocking piston, the outer shell is fixedly connected to a discharge pipe 1 and a discharge pipe 2 both connected to the centrifugal extraction module, the extraction kettle is fixedly connected to a liquid inlet pipe 1 and a liquid inlet pipe 2 both connected to the mixing chamber.

[0006] Furthermore, the rotating shell is fixedly connected to a stirring frame, and the bracket is provided with a driving module for driving the rotating shell to rotate.

[0007] Furthermore, the connecting pipe is fixedly connected to a fixing ring, the fixing ring is provided with a sliding plate, the sliding plate is slidingly connected to the blocking piston, and a filter cloth is fixedly connected between the fixing ring and the sliding plate.

[0008] Furthermore, the fixing ring, the sliding plate and the filter cloth cooperate to form a cavity, and the fitting surfaces of the blocking piston and the connecting pipe are both located in the cavity.

[0009] Furthermore, it also includes a fixed shell, which is fixedly connected to the sliding plate, a first elastic member is provided between the fixed shell and the rotating shell, the fixed ring is slidably connected to the sliding plate, and the rotating shell is provided with a pushing component for pushing the sliding plate to reciprocate.

[0010] Furthermore, the first elastic member is always in a compressed state, so as to keep the filter cloth in a stretched state.

[0011] Furthermore, the pushing assembly includes a rotating sleeve, which is rotatably connected to the blocking piston. The rotating sleeve is located in the rotating shell, and the two are slidably connected. The rotating sleeve is fixedly connected to a clamping block, and the clamping block is slidably connected to the rotating shell. The fixed shell is fixedly connected to several circumferentially distributed extrusion blocks, and the clamping block is used to extrude the extrusion block. The sliding plate is provided with a recoil assembly for recoiling the filter cloth.

[0012] Furthermore, the recoil assembly includes several recoil cylinders, several of the recoil cylinders are fixedly connected to the sliding plate, several of the recoil cylinders are communicated with the cavity formed by the fixing ring, the sliding plate and the filter cloth, a recoil piston is sealingly and slidingly connected in the recoil cylinder, the stirring frame is limitedly and rotatably connected to the support frame, several of the recoil pistons are slidably connected to the support frame, a second elastic member is provided between several of the recoil pistons and the support frame, and a positioning assembly for limiting the recoil piston is provided on the recoil cylinder.

[0013] Furthermore, the locking assembly includes a locking shaft, which is slidably connected to the recoil cylinder. A third elastic member is provided between the locking shaft and the recoil cylinder. The recoil piston is provided with a limiting hole, and the locking shaft limits the recoil piston through the limiting hole.

[0014] Furthermore, the clamping shaft is fixedly connected with a reset block, and the support frame is fixedly connected with push blocks having the same number as the reset blocks, and the push blocks are used to squeeze adjacent reset blocks.

[0015] The present invention has the following advantages: 1. The present invention injects the mixed liquid in the mixing chamber into the centrifugal extraction module in batches for stratification treatment, and at the same time uses the sealing piston to seal the connecting pipe, isolating the communication between the mixing chamber and the centrifugal extraction module, thereby improving the stratification rate of the mixed liquid in the centrifugal extraction module.

[0016] 2. The solid impurities in the mixed liquid are blocked by the filter cloth. At the same time, the fixing ring, sliding plate and filter cloth wrap the sealing surface of the sealing piston and the connecting pipe to the inside, so that the impurities in the mixed liquid will not adhere to the fitting position of the sealing piston and the connecting pipe, thereby ensuring the sealing effect of the sealing piston on the connecting pipe.

[0017] 3. When plugging the connecting pipe, the filter cloth is circulated from a stretched state to a relaxed state, thereby changing the external tension of the filter cloth, separating the impurities attached to the outside of the filter cloth from the filter cloth, and maintaining the flow area of ​​the filter cloth.

[0018] 4. The mixed liquid is accumulated in the recoil cylinder, and when the filter cloth is in a straightened state, the recoil piston pushes the mixed liquid to backflush the filter cloth, further reducing the adhesion area of ​​impurities on the filter cloth and increasing the flow area of ​​the mixed liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 Schematic diagram of the three-dimensional cross-sectional structure of the extraction kettle and the shell of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the blocking piston and the driving member of the present invention;

[0022] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the filter cloth and the fixed shell of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the recoil cylinder and the recoil piston of the present invention;

[0024] Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the recoil cylinder of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the clamping shaft and the third elastic member of the present invention.

[0026] Reference numerals in the figure are: 1-bracket, 2-extraction kettle, 3-housing, 4-centrifugal extraction module, 5-connecting pipe, 6-mixing chamber, 7-rotating shell, 8-sealing piston, 9-driving member, 10-stirring frame, 11-driving module, 201-fixed ring, 202-sliding plate, 203-filter cloth, 301-fixed shell, 302-first elastic member, 303-rotating sleeve, 304-block, 305-extrusion block, 401-recoil cylinder, 402-recoil piston, 403-support frame, 404-second elastic member, 503-limiting hole, 501-card shaft, 502-third elastic member, 504-reset block, 505-push block. DETAILED DESCRIPTION

[0027] The above scheme is further described below with reference to specific examples. It should be understood that these examples are intended to illustrate the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those used in routine experiments.

[0028] When the existing centrifugal extractor is in operation, the mixing chamber and the centrifugal chamber are continuously connected, causing the mixed liquid in the centrifugal chamber to be disturbed by the flowing liquid from the mixing chamber during the separation process, making it difficult to quickly form a stable and clear interface between the heavy phase and the light phase, thereby affecting the separation effect of aluminum impurities and reducing the final purity of the rare earth solution.

[0029] Example 1: This example discloses an online aluminum removal device based on a rare earth extraction and separation system, which is used to remove aluminum from a rare earth solution.

[0030] like Figures 1-4As shown, it includes a bracket 1, the bracket 1 is fixedly connected to the extraction kettle 2, the top of the extraction kettle 2 is fixedly connected to the shell 3, the extraction kettle 2 and the shell 3 are jointly provided with a centrifugal extraction module 4 for separating the heavy phase and the light phase, the centrifugal extraction module 4 is provided with a centrifugal cavity, the centrifugal extraction module 4 is a prior art and will not be described in detail here, a connecting pipe 5 is fixedly connected to the extraction kettle 2, and a mixing chamber 6 is provided at the bottom of the extraction kettle 2. The mixing chamber 6 is connected to the centrifugal cavity in the centrifugal extraction module 4 through the connecting pipe 5, and is used to allow the mixed liquid of the rare earth solution and the extractant in the mixing chamber 6 (hereinafter referred to as redundant) to enter the centrifugal cavity of the centrifugal extraction module 4, so that the mixed liquid is centrifugally layered in the centrifugal cavity of the centrifugal extraction module 4, and the bottom of the extraction kettle 2 is rotatably connected to a rotating shell 7 in the mixing chamber 6, and a blocking piston 8 is slidably and rotatably connected in the rotating shell 7. The blocking piston 8 is used to Control the communication state between the centrifugal chamber and the mixing chamber 6 in the centrifugal extraction module 4, isolate the communication between the mixing chamber 6 and the centrifugal chamber in the centrifugal extraction module 4, and improve the stratification rate and degree of the mixed liquid in the centrifugal extraction module 4. The upper plane of the bracket 1 is fixedly connected to the driving member 9 through the frame. The driving member 9 is an electric push rod in this application. The telescopic end of the driving member 9 is fixedly connected to the blocking piston 8. The outer shell 3 is fixedly connected with a discharge pipe 1 and a discharge pipe 2, both of which are connected to the centrifugal chamber in the centrifugal extraction module 4. The discharge pipe 1 is used to discharge the heavy phase with aluminum elements, and the discharge pipe 2 is used to discharge the rare earth solution from which the aluminum element is removed. The bottom of the extraction kettle 2 is fixedly connected with a liquid inlet pipe 1 and a liquid inlet pipe 2, both of which are connected to the mixing chamber 6. The liquid inlet pipe 1 is used to inject the rare earth solution, and the liquid inlet pipe 2 is used to inject the extractant. The bottom of the extraction kettle 2 is fixedly connected with a waste liquid pipe, which is connected to the mixing chamber 6 for discharging residual solution.

[0031] like Figure 2-Figure 4As shown, the rotating shell 7 is fixedly connected to the stirring frame 10, and the rotating shell 7 drives the stirring frame 10 to stir the mixed liquid in the mixing chamber 6. The stirring frame 10 is used to improve the mixing uniformity of the extractant and the rare earth solution. The upper plane of the bracket 1 is provided with a driving module 11 for driving the rotating shell 7 to rotate through the frame body. The driving module 11 is composed of a servo motor and two gears. The two gears are respectively fixedly connected to the rotating shell 7 and the output shaft of the servo motor, and the two gears are engaged to drive the rotating shell 7 to rotate. The outside of the connecting pipe 5 is fixedly connected to a fixing ring 201, and the fixing ring 201 is provided with a sliding plate 202 The sliding plate 202 is slidably connected to the sealing piston 8, and a filter cloth 203 is fixedly connected between the fixed ring 201 and the sliding plate 202. The filter cloth 203 is used to block the solid impurities contained in the rare earth solution, and prevent the solid impurities from entering the centrifugal cavity of the centrifugal extraction module 4, affecting the stratification of the heavy phase and the light phase. The fixed ring 201, the sliding plate 202 and the filter cloth 203 cooperate to form a cavity, and the fitting surfaces of the sealing piston 8 and the connecting pipe 5 are both located in the cavity, which is used to prevent the solid impurities in the mixed liquid from adhering to the fitting surface of the sealing piston 8, thereby reducing the sealing strength of the sealing piston 8 to the connecting pipe 5.

[0032] Working principle: When it is necessary to separate the aluminum element in the rare earth solution, the centrifugal extraction module 4 and the driving module 11 are turned on, and the staff injects the rare earth solution and the extractant into the mixing chamber 6 in the extraction kettle 2 through the liquid inlet pipe 1 and the liquid inlet pipe 2 respectively. The rare earth solution and the extractant are mixed in the mixing chamber 6, and as the two are continuously injected, the mixing chamber 6 is gradually filled. Then, the mixture of the rare earth solution and the extractant enters the centrifugal chamber of the centrifugal extraction module 4 through the connecting pipe 5, and so on until the centrifugal chamber of the centrifugal extraction module 4 is filled with the mixture of the rare earth solution and the extractant. At this time, the driving part 9 is turned on, and the telescopic end of the driving part 9 drives the blocking piston 8 to move upward, so that the blocking piston 8 is attached to the lower side of the connecting pipe 5 to form a blockage. At this time, the mixed liquid in the centrifugal chamber of the centrifugal extraction module 4 begins to be stratified by centrifugal force.

[0033] After the centrifugal extraction module 4 separates the mixed liquid into a heavy phase and a light phase, the telescopic end of the driving member 9 is manipulated to drive the blocking piston 8 downward, and rare earth solution and extractant are injected into the mixing chamber 6 through the liquid inlet pipe 1 and the liquid inlet pipe 2, so that the mixed liquid in the mixing chamber 6 continues to enter the centrifugal chamber of the centrifugal extraction module 4, and the heavy phase and light phase that have been separated and separated by the centrifugal extraction module 4 are pushed out along the discharge pipe 1 and the discharge pipe 2 respectively. This process is repeated until the heavy phase and the light phase are safely discharged. The telescopic end of the driving member 9 drives the blocking piston 8 upward to block the connecting pipe 5 again. This cycle is repeated until the aluminum removal operation of the rare earth solution is stopped, and then the centrifugal extraction module 4 and the driving module 11 are closed. When the aluminum removal operation of the rare earth solution is required again, the above steps are repeated. The mixed liquid in the mixing chamber 6 is injected into the centrifugal chamber of the centrifugal extraction module 4 in batches for separation treatment. At the same time, the blocking piston 8 blocks the connecting pipe 5, isolating the communication between the mixing chamber 6 and the centrifugal chamber in the centrifugal extraction module 4, thereby improving the separation rate of the mixed liquid in the centrifugal chamber of the centrifugal extraction module 4.

[0034] During this period, the driving module 11 drives the stirring frame 10 to rotate through the rotating shell 7, so that the stirring frame 10 stirs the mixed liquid in the mixing chamber 6, thereby improving the mixing uniformity of the rare earth solution and the extractant. When the mixed liquid in the mixing chamber 6 enters the centrifugal chamber of the centrifugal extraction module 4 for separation, the mixed liquid will pass through the filter cloth 203. The filter cloth 203 blocks the solid impurities in the mixed liquid, preventing the solid impurities from entering the centrifugal extraction module and affecting the separation effect of rare earth and aluminum elements. At the same time, the cavity composed of the fixed ring 201, the sliding plate 202 and the filter cloth 203 wraps the fitting position of the sealing piston 8 and the connecting pipe 5 inside, so that impurities in the mixed liquid will not adhere to the fitting position of the sealing piston 8 and the connecting pipe 5, thereby ensuring the sealing effect of the sealing piston 8 on the connecting pipe 5 and reducing the probability of leakage.

[0035] Example 2: This example discloses an online aluminum removal device based on a rare earth extraction and separation system, which is further improved on the basis of Example 1.

[0036] like Figure 3 and Figure 4 As shown, it also includes a fixed shell 301, which is fixedly connected to the bottom of the sliding plate 202. A first elastic member 302 is provided between the fixed shell 301 and the rotating shell 7. The first elastic member 302 is a spring. The first elastic member 302 is always in a compressed state, exerting a downward force on the sliding plate 202 to make the filter cloth 203 in a straight state, avoiding the filter cloth 203 from being wrinkled or overlapping, and reducing the smoothness of the mixed liquid passing through the filter cloth 203. The fixed ring 201 and the sliding plate 202 are slidably connected, and the rotating shell 7 is provided with a pushing component for pushing the sliding plate 202 to move back and forth.

[0037] like Figure 3 and Figure 4 When the cam 310 is in the closed position, the cam 310 is in the closed position, and the cam 310 is in the closed position, so that the cam 310 is in the open position, and the cam 310 is in the open position, so that the cam 310 is in the open position, and the cam 310 is in the open position, so that the cam 310 is in the open position, and the cam 310 is in the open position, so that the cam 310 is in the open position, and the cam 310 is in the open position, so that the cam 310 is in the open position,

[0038] Working principle: After the device has been used for a long time, impurities in the mixed liquid will adhere to the outside of the filter cloth 203, reducing the flow area of ​​the filter cloth 203, thereby affecting the rate at which the mixed liquid enters the centrifugal chamber of the centrifugal extraction module 4. When the telescopic end of the driving member 9 drives the blocking piston 8 to fit with the connecting pipe 5, the blocking piston 8 drives the block 304 to slide upward along the rotating shell 7 through the rotating sleeve 303. When the blocking piston 8 fits the connecting pipe 5, the block 304 moves to a contact position with the extrusion block 305. At this time, the rotation of the rotating shell 7 will push the block 304 to rotate and squeeze the extrusion block 305, so that the extrusion block 305 is squeezed and pushes the fixed shell 301 to move upward, and the fixed shell 301 drives the sliding plate 20 2 moves upward, and at the same time, the first elastic member 302 is further compressed, and the sliding plate 202 slides upward along the fixing ring 201, so that the filter cloth 203 changes from a stretched state to a relaxed state. When the clamping block 304 is separated from the extruding block 305, the first elastic member 302 pushes the sliding plate 202 to return to its original position, and the first elastic member 302 is restored and extended, and the filter cloth 203 changes from a relaxed state to a stretched state. When the clamping block 304 contacts the extruding block 305 again, the above steps are repeated. By making the filter cloth 203 change from a stretched state to a relaxed state cyclically when the connecting pipe 5 is blocked, the external tension of the filter cloth 203 is changed, so that impurities attached to its exterior are separated from the filter cloth 203, and the flow area of ​​the filter cloth 203 is maintained.

[0039] When the mixed liquid in the centrifugal chamber of the centrifugal extraction module 4 is layered, the telescopic end of the driving member 9 drives the blocking piston 8 to move downward and separate from the connecting pipe 5. The blocking piston 8 drives the blocking block 304 to move downward synchronously through the rotating sleeve 303, so that the blocking block 304 cannot squeeze the squeezing block 305. That is, when the blocking piston 8 does not block the connecting pipe 5, the filter cloth 203 is always in a straight state, ensuring that the filter cloth 203 filters the impurities in the mixing chamber 6 with the maximum area. When the mixed liquid in the centrifugal chamber of the centrifugal extraction module 4 is replaced, the telescopic end of the driving member 9 drives the blocking piston 8 to move upward to block the connecting pipe 5 again. This cycle continues until the rare earth solution treatment is completed. When the aluminum element in the rare earth needs to be separated again, the above steps are repeated.

[0040] Example 3: This example discloses an online aluminum removal device based on a rare earth extraction and separation system, which is further improved on the basis of Example 2.

[0041] like Figure 5-Figure 7 As shown, the recoil assembly includes a plurality of recoil cylinders 401, which are fixedly connected to the sliding plate 202, and are circumferentially evenly spaced on the sliding plate 202. The recoil cylinders 401 are connected to the cavity formed by the fixed ring 201, the sliding plate 202 and the filter cloth 203. A recoil piston 402 is sealed and slidably connected in the recoil cylinder 401. In the initial state, the recoil piston 402 is located at the top of the recoil cylinder 401, and the stirring frame 10 is limitedly rotatably connected to the support frame 403. The recoil pistons 402 are slidably connected to the support frame 403. The support frame 403 is used to limit the position of several recoil pistons 402. When the sliding plate 202 drives the recoil cylinder 401 to move upward, the recoil piston 402 is in a stationary state. At this time, the mixed liquid is pumped into the recoil cylinder 401. When the sliding plate 202 drives the recoil cylinder 401 to return to its original position, the mixed liquid in the recoil cylinder 401 recoils the filter cloth 203. A second elastic member 404 is provided between the several recoil pistons 402 and the support frame 403. The second elastic member 404 is a tension spring for driving the recoil piston 402 to return to its original position. A locking assembly for limiting the recoil piston 402 is provided on the recoil cylinder 401.

[0042] like Figure 5-Figure 7As shown, the locking assembly includes a locking shaft 501, which is slidably connected to the bottom of the recoil cylinder 401. A third elastic member 502 is provided between the locking shaft 501 and the recoil cylinder 401. The third elastic member 502 is a tension spring, which is initially in a stretched state. The recoil piston 402 is provided with a limiting hole 503. The locking shaft 501 limits the recoil piston 402 through the limiting hole 503. When the recoil cylinder 401 drives the locking shaft 501 to move to the same height as the upper limit hole 503 of the adjacent recoil piston 402, the locking shaft 501 enters the corresponding limiting hole 503, so that the recoil cylinder 401 drives the internal The recoil piston 402 moves downward synchronously, the card shaft 501 is fixedly connected to the reset block 504, the reset block 504 is provided with an inclined surface, and the support frame 403 is fixedly connected to the push blocks 505 with the same number as the reset blocks 504. The push blocks 505 are used to squeeze the adjacent reset blocks 504, and the push blocks 505 have an inclined surface that cooperates with the reset blocks 504. The push blocks 505 can squeeze the reset blocks 504, so that the reset blocks 504 drive the card shaft 501 to separate from the corresponding limit holes 503. At this moment, the filter cloth 203 is in a stretched state, and the recoil piston 402 pushes the mixed liquid to recoil the filter cloth 203.

[0043] Working principle: When the blocking piston 8 blocks the connecting pipe 5, when the sliding plate 202 slides upward along the fixing ring 201, the sliding plate 202 will drive the plurality of recoil cylinders 401 thereon to move synchronously. At this time, since the recoil piston 402 is limited by the corresponding second elastic member 404 through the support frame 403, it cannot move synchronously with the recoil cylinder 401, that is, the recoil cylinder 401 and the recoil piston 402 are misaligned and slide, so that the clean mixed liquid in the filter cloth 203 enters the recoil cylinder 401, and the recoil cylinder 401 drives the clamping shaft thereon. 501 moves synchronously, and at the same time, the reset block 504 loses contact with the corresponding push block 505, the clamping shaft 501 is attached to the outer wall of the adjacent recoil piston 402, and the third elastic member 502 is in a stretched state and cannot be reset. When the sliding plate 202 drives the recoil cylinder 401 to stop rising, the clamping shaft 501 and the limiting hole 503 on the corresponding recoil piston 402 are at the same height. At this time, the accumulated tension of the third elastic member 502 pushes the clamping shaft 501 into the limiting hole 503, so that the recoil cylinder 401 and the recoil piston 402 are connected as one. When the sliding plate 202 drives the recoil cylinder 401 to reset downward, the recoil cylinder 401 drives the adjacent recoil piston 402 to move downward synchronously through the clamping shaft 501, and the recoil piston 402 slides along the support frame 403. At the same time, the second elastic member 404 is stretched, and this continues until the sliding plate 202 drives the recoil cylinder 401 to reset to the initial position, so that the recoil cylinder 401 drives the reset block 504 thereon to contact the corresponding push block 505 through the clamping shaft 501, so that the push block 505 squeezes the corresponding reset block 504, and the reset block 504 is squeezed and drives the corresponding The adjacent clamping shaft 501 is separated from the adjacent limiting hole 503, and the third elastic member 502 is stretched. At this moment, the filter cloth 203 is in a stretched state. At the same time, the second elastic member 404 drives the recoil piston 402 to slide upward along the recoil cylinder 401, so that the recoil piston 402 pushes the mixed liquid in the recoil cylinder 401 to backflush the stretched filter cloth 203, further reducing the adhesion area of ​​impurities on the filter cloth 203 and increasing the flow area of ​​the mixed liquid. This cycle continues until the telescopic end of the driving member 9 drives the stirring frame 10 to separate from the connecting pipe 5.

[0044] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An online aluminum removal device based on a rare earth extraction and separation system, comprising a bracket (1), wherein the bracket (1) is fixedly connected to an extraction kettle (2), wherein the extraction kettle (2) is fixedly connected to a housing (3), wherein a centrifugal extraction module (4) for separating a heavy phase and a light phase is provided in both the extraction kettle (2) and the housing (3), wherein a centrifugal chamber is provided in the centrifugal extraction module (4), wherein the device is characterized in that: The extraction kettle (2) is fixedly connected with a connecting pipe (5), and a mixing chamber (6) is provided in the extraction kettle (2). The mixing chamber (6) is communicated with the centrifugal chamber in the centrifugal extraction module (4) through the connecting pipe (5). The extraction kettle (2) is rotatably connected with a rotating shell (7) in the mixing chamber (6). A blocking piston (8) is slidably and rotatably connected in the rotating shell (7). The blocking piston (8) is used to control the communication state between the centrifugal chamber in the centrifugal extraction module (4) and the mixing chamber (6). The bracket (1) is fixedly connected with a driving member (9), and the telescopic end of the driving member (9) is fixedly connected with the blocking piston (8). The outer shell (3) is fixedly connected with a discharge pipe 1 and a discharge pipe 2 both of which are communicated with the centrifugal extraction module (4). The extraction kettle (2) is fixedly connected with a liquid inlet pipe 1 and a liquid inlet pipe 2 both of which are communicated with the mixing chamber (6). The connecting tube (5) is fixedly connected to a fixing ring (201), the fixing ring (201) is provided with a sliding plate (202), the sliding plate (202) is slidably connected to the blocking piston (8), and a filter cloth (203) is fixedly connected between the fixing ring (201) and the sliding plate (202); the fixing ring (201), the sliding plate (202) and the filter cloth (203) cooperate to form a cavity, and the contact surfaces of the blocking piston (8) and the connecting tube (5) are both located in the cavity; It also includes a fixed shell (301), the fixed shell (301) is fixedly connected to the sliding plate (202), a first elastic member (302) is provided between the fixed shell (301) and the rotating shell (7), the fixed ring (201) and the sliding plate (202) are in sliding connection, the rotating shell (7) is provided with a pushing component for pushing the sliding plate (202) to reciprocate, and the first elastic member (302) is always in a compressed state, and is used to keep the filter cloth (203) in a straight state; The pushing assembly comprises a rotating sleeve (303), the rotating sleeve (303) being rotatably connected to the blocking piston (8), the rotating sleeve (303) being located in the rotating shell (7), and the two being slidably connected, the rotating sleeve (303) being fixedly connected to a clamping block (304), the clamping block (304) being slidably connected to the rotating shell (7), the fixed shell (301) being fixedly connected to a plurality of circumferentially distributed extrusion blocks (305), the clamping blocks (304) being used to extrude the extrusion blocks (305), and the sliding plate (202) being provided with a recoil assembly for recoiling the filter cloth (203).

2. The online aluminum removal equipment based on the rare earth extraction and separation system according to claim 1 is characterized in that: The rotating shell (7) is fixedly connected to a stirring frame (10), and the bracket (1) is provided with a driving module (11) for driving the rotating shell (7) to rotate.

3. The online aluminum removal equipment based on the rare earth extraction and separation system according to claim 2 is characterized in that: The recoil assembly includes a plurality of recoil cylinders (401), and the plurality of recoil cylinders (401) are fixedly connected to the sliding plate (202). The plurality of recoil cylinders (401) are communicated with a cavity formed by the fixing ring (201), the sliding plate (202) and the filter cloth (203). A recoil piston (402) is sealed and slidably connected inside the recoil cylinder (401). The stirring frame (10) is connected to the support frame (403) in a limited rotation manner. The plurality of recoil pistons (402) are slidably connected to the support frame (403). A second elastic member (404) is provided between the plurality of recoil pistons (402) and the support frame (403). A positioning assembly for limiting the recoil piston (402) is provided on the recoil cylinder (401).

4. The online aluminum removal equipment based on the rare earth extraction and separation system according to claim 3 is characterized in that: The locking assembly includes a locking shaft (501), the locking shaft (501) is slidably connected to the recoil cylinder (401), a third elastic member (502) is provided between the locking shaft (501) and the recoil cylinder (401), the recoil piston (402) is provided with a limiting hole (503), and the locking shaft (501) limits the recoil piston (402) through the limiting hole (503).

5. The online aluminum removal equipment based on the rare earth extraction and separation system according to claim 4 is characterized in that: The clamping shaft (501) is fixedly connected to a reset block (504), and the support frame (403) is fixedly connected to push blocks (505) having the same number as the reset blocks (504), and the push blocks (505) are used to squeeze adjacent reset blocks (504).

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