A rare earth oxide extraction device for recycling rare earth waste

Abstract

The present invention discloses a rare earth oxide extraction device for recycling rare earth waste, comprising a storage cylinder, a plurality of pressure limiting valves are connected and installed at the middle position of the outer peripheral wall of the storage cylinder, a connecting pipe is connected and installed at the feed end of the pressure limiting valve, and the inner bottom wall of the storage cylinder is arranged in a hemispherical shape. When the improved rare earth oxide extraction device is used, multiple chemical agents can be sequentially added into the liquid in the storage cylinder through multiple one-way valves, so that the rare earth oxides are sequentially extracted from the rare earth mother liquor, and the rare earth oxides are separated from the liquid and stored separately through the stirring mechanism and the separation mechanism. At the same time, the extracted rare earth oxides are centrifugally dried through the cooperation of the stirring mechanism, the separation mechanism and the centrifugal mechanism. The device is simple to operate, and multiple rare earth oxides can be extracted from the rare earth mother liquor at one time, thereby improving the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rare earth oxide extraction equipment, and in particular to a rare earth oxide extraction equipment for recycling rare earth waste. Background Art

[0002] Rare earth waste recycling oxide extraction is a method of extracting and recovering rare earth oxides from rare earth waste. Rare earth waste usually comes from the waste generated during the mining and smelting of rare earth mines and the production of rare earth products. These wastes contain a certain amount of rare earth elements, but due to their low concentration, direct use is more difficult. Therefore, it is necessary to extract the rare earth elements through certain technical means to achieve resource recycling.

[0003] Rare earth oxides are extracted from some rare earth waste by precipitation, and rare earth elements are reacted with certain chemical reagents to generate insoluble precipitates, and rare earth oxides are obtained by filtering, washing, drying and other steps. Generally, various chemical solutions are added to the rare earth mother liquor, and then the rare earth oxides in the rare earth mother liquor are precipitated by precipitation and standing, and then the rare earth mother liquor and oxide particles are separated by filtering through filter plates. Often only one oxide can be extracted at a time, and after the rare earth oxide is separated, it is necessary to dry the rare earth oxide by centrifugation or placement, which is complicated to operate and reduces work efficiency. Summary of the invention

[0004] The object of the present invention is to provide a rare earth oxide extraction device for recycling rare earth waste, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rare earth oxide extraction device for recycling rare earth waste, comprising a storage cylinder, a plurality of pressure-limiting valves are connected and installed at the middle position of the outer peripheral wall of the storage cylinder, a connecting pipe is connected and installed at the feed end of the pressure-limiting valve, the inner bottom wall of the storage cylinder is hemispherical, an electrically controlled three-way valve is provided on the outer peripheral side of the bottom of the storage cylinder, and the liquid inlet end of the electrically controlled three-way valve extends to the lowest point of the inner bottom wall of the storage cylinder and is fixedly connected to the storage cylinder, a stirring mechanism is provided in the storage cylinder, a separation mechanism is provided at the top end of the stirring mechanism, and a centrifugal mechanism is provided in the top opening of the storage cylinder.

[0006] Preferably, the stirring mechanism includes a fixed tube, which is arranged in the storage cylinder, and a rotating shaft is installed through the fixed tube. A plurality of impellers are fixedly sleeved on the outer peripheral side of the rotating shaft from top to bottom, and the outer peripheral wall of the impeller is gap-matched with the inner wall of the fixed tube. A driver is fixedly installed on the bottom side of the storage cylinder, and the bottom of the rotating shaft rotates through the cylinder wall of the storage cylinder and is fixedly connected to the driving end of the driver.

[0007] Preferably, two connecting rods are oppositely disposed at the bottom end of the fixed tube, and both ends of each connecting rod are fixedly connected to the inner bottom wall of the storage cylinder and the bottom end of the fixed tube respectively.

[0008] Preferably, the separation mechanism includes a filter plate in a ring shape, the upper and lower sides of the filter plate are both inclined from the middle to the outside, the filter plate is rotatably sleeved on the top of the fixed tube through a bearing, and a plurality of shift plates are fixedly sleeved on the top of the rotating shaft through a sleeve, and the bottom side of each shift plate is in contact with the top of the fixed tube.

[0009] Preferably, a filter cartridge in the shape of an annular arrangement is sleeved on the outer peripheral side of the filter plate, and the inner annular wall of the filter cartridge contacts the outer peripheral wall of the filter plate, the outer peripheral wall of the filter cartridge is gap-matched with the inner wall of the storage cartridge, a plurality of storage grooves in the shape of annular arrangement are opened from top to bottom in the cartridge wall of the filter cartridge, and a feed hole is opened on the inner annular wall of the filter cartridge at a position corresponding to the storage groove.

[0010] Preferably, the centrifugal mechanism comprises a circular plate, a sealing cover is threadedly installed in the top opening of the storage cylinder, the circular plate is rotatably installed through the center of the sealing cover, and a first electric telescopic rod is fixedly installed through the center of the circular plate.

[0011] Preferably, a plurality of second electric telescopic rods are fixedly mounted on the top side of the circular plate in a circular array, and a push rod of each second electric telescopic rod slides through the circular plate and is fixedly connected to the filter cartridge.

[0012] Preferably, a plurality of push plates are provided in a circular array between the fixed tube and the filter plate, and the top end of each push plate is fixedly connected to the outer arc wall of the filter plate, and the bottom ends of the push plates are rotatably connected to the outer peripheral wall of the storage tube through a ring and a bearing, and the filter plate is arranged in an inclined shape.

[0013] The present invention has at least the following beneficial effects: 1. When the improved rare earth oxide extraction equipment is in use, multiple chemical agents can be sequentially added into the liquid in the storage cylinder through a plurality of one-way valves, thereby extracting rare earth oxides from the rare earth mother liquor in turn, and separating the rare earth oxides from the liquid and storing them separately through the stirring mechanism and the separation mechanism. At the same time, the extracted rare earth oxides are centrifugally dried through the cooperation of the stirring mechanism, the separation mechanism and the centrifugal mechanism. The device is easy to operate and can extract multiple rare earth oxides from the rare earth mother liquor at one time, thereby improving the work efficiency. 2. After the chemical agent and rare earth mother liquor are injected into the storage cylinder, the stirring mechanism continuously pushes part of the liquid at the bottom of the storage cylinder upward and discharges it from the top of the storage cylinder. At the same time, the liquid is diverted into many small streams through the separation mechanism and falls into the liquid in the storage cylinder. At the same time, the liquid at the top of the storage cylinder is stirred by the stirring mechanism, the separation mechanism and the centrifugal mechanism, so that the chemical agent and the rare earth mother liquor are quickly mixed, so that the chemical agent and the rare earth mother liquor are quickly and fully contacted, thereby accelerating the extraction rate of rare earth oxides in the rare earth mother liquor.

[0014] 3. According to the above, after the extraction of the first rare earth oxide is completed, the centrifugal mechanism cooperates with the separator mechanism to lift the extracted first rare earth oxide upwards, and at the same time injects the second chemical agent into the storage cylinder through the pressure limiting valve, so that according to the above, when the second chemical agent is mixed with the rare earth mother liquor, the centrifugal drying treatment of the first rare earth oxide can be carried out simultaneously. Such reciprocating operation can extract multiple rare earth oxides from the rare earth mother liquor at one time, and the centrifugal drying treatment is almost completed after the rare earth oxide is extracted, which simplifies the operation process and further improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0016] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the storage cylinder of the present invention; Figure 3 It is a schematic diagram of the overall structure of a portion of the storage cylinder of the present invention; Figure 4 It is a schematic diagram of the internal structure of the cover and the circular plate of the present invention; Figure 5 It is a schematic diagram of the overall structure of some fixed pipes and filter cartridges of the present invention; Figure 6 It is a schematic diagram of the internal structure of the filter cartridge of the present invention; Figure 7 It is a schematic diagram of the overall structure of the fixed tube and the filter plate of the present invention; Figure 8 It is a schematic diagram of the internal structure of the fixed tube of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure: 1. storage cylinder; 2. electric-controlled three-way valve; 3. stirring mechanism; 31. fixed pipe; 32. rotating shaft; 33. impeller; 34. driver; 35. connecting rod; 4. separation mechanism; 41. filter plate; 43. paddle plate; 44. filter cylinder; 45. storage tank; 46. feed hole; 47. second electric telescopic rod; 5. centrifugal mechanism; 51. sealing cover; 52. round plate; 53. first electric telescopic rod; 54. push plate; 6. pressure-limiting valve; 7. connecting pipe. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] The present invention provides a technical solution: referring to Figure 1-9 The present invention discloses a rare earth oxide extraction device for recycling rare earth waste, comprising a storage cylinder 1, a plurality of pressure limiting valves 6 are connected and installed at the middle position of the outer peripheral wall of the storage cylinder 1, a connecting pipe 7 is connected and installed at the feed end of the pressure limiting valve 6, the inner bottom wall of the storage cylinder 1 is arranged in a hemispherical shape, an electric-controlled three-way valve 2 is arranged on the outer peripheral side of the bottom of the storage cylinder 1, and the liquid inlet end of the electric-controlled three-way valve 2 extends to the lowest point of the inner bottom wall of the storage cylinder 1 and is fixedly connected to the storage cylinder 1, a stirring mechanism 3 is arranged in the storage cylinder 1, a separation mechanism 4 is arranged at the top of the stirring mechanism 3, and a centrifugal mechanism 5 is arranged in the top opening of the storage cylinder 1.

[0020] In this embodiment, when the improved rare earth oxide extraction equipment is in use, first, the rare earth mother liquid supply device injects an appropriate amount of rare earth mother liquid into the storage cylinder 1 through the electric three-way valve 2, and the chemical agent supply device intermittently puts an appropriate amount of chemical agent into the storage cylinder 1 through the pressure limiting valve 6 through the soft pipe. After the first chemical agent is put into the storage cylinder 1, the stirring mechanism 3 continuously pushes part of the liquid at the bottom of the storage cylinder 1 upward, and discharges it from the top of the storage cylinder 1. At the same time, the liquid is diverted into many small streams through the separation mechanism 4 and falls into the liquid in the storage cylinder 1. At the same time, the liquid at the top of the storage cylinder 1 is stirred by the stirring mechanism 3, the separation mechanism 4 and the centrifugal mechanism 5, so that the chemical agent and the rare earth mother liquid are quickly mixed, so that the chemical agent and the rare earth mother liquid are quickly and fully contacted, and then the storage cylinder 1 is carried out. The liquid is allowed to stand still, so that the chemical agent and the rare earth mother liquor fully react, so that the rare earth oxides in the rare earth mother liquor are precipitated from the liquid, and then the rare earth oxides are pushed onto the separation mechanism 4 through the liquid flow, and the rare earth oxides are filtered out of the liquid through the separation mechanism 4 and stored separately. After the first rare earth oxide is extracted, the second chemical agent is put into the storage cylinder 1 according to the above, and the centrifugal mechanism 5 cooperates with the separator mechanism to lift the extracted first rare earth oxide upward, so that the first rare earth oxide is centrifugally dried while the second chemical agent is mixed with the rare earth mother liquor. Such a reciprocating operation can extract multiple rare earth oxides from the rare earth mother liquor at one time, and after the rare earth oxide is extracted, the centrifugal drying of almost all rare earth oxides is completed; It should be noted that the other two interfaces of the above-mentioned electric-controlled three-way valve 2 are respectively connected to the discharge end of the rare earth mother liquid supply equipment and the feed end of the waste liquid storage equipment through the feed pipe, and the feed end of the connecting pipe 7 is connected to the discharge end of the chemical agent supply equipment.

[0021] In a further preferred embodiment of the present invention, Figure 2 , Figure 7 and Figure 8 As shown, the stirring mechanism 3 includes a fixed tube 31, which is arranged in the storage tube 1, and a rotating shaft 32 is installed in the fixed tube 31, and a plurality of impellers 33 are fixedly sleeved on the outer peripheral side of the rotating shaft 32 from top to bottom, and the outer peripheral wall of the impeller 33 is gap-matched with the inner wall of the fixed tube 31, and a driver 34 is fixedly installed on the bottom side of the storage tube 1, and the bottom of the rotating shaft 32 rotates through the wall of the storage tube 1 and is fixedly connected to the driving end of the driver 34; In this embodiment, when the chemical agent and the rare earth mother liquor are mixed, the driver 34 drives the impeller 33 to rotate through the rotating shaft 32, and the rotating impeller 33 continuously pushes the liquid in the fixed tube 31 upward, so that a negative pressure chamber is continuously formed in the bottom opening of the fixed tube 31, and the liquid at the bottom of the storage tube 1 is sucked into the bottom opening of the fixed tube 31 to replenish the liquid lost in the bottom opening of the fixed tube 31, and the liquid in the fixed tube 31 moves upward along the fixed tube 31 and is discharged from the top opening of the fixed tube 31. Through the suction of the fixed tube 31, all the liquid in the storage tube 1 can be sucked into the fixed tube 31 for mixing and stirring.

[0022] In a further preferred embodiment of the present invention, Figure 2 As shown, two connecting rods 35 are oppositely disposed at the bottom end of the fixed tube 31, and both ends of each connecting rod 35 are respectively fixedly connected to the inner bottom wall of the storage cylinder 1 and the bottom end of the fixed tube 31; In this embodiment, the setting of the connecting rod 35 can stabilize the position of the fixed tube 31 in the storage tube 1 and ensure that there is always a certain gap at the bottom end of the fixed tube 31, so that the liquid at the bottom of the storage tube 1 can continuously pass through the gap between the connecting tube 7, the bottom side of the fixed tube 31 and the inner wall of the storage tube 1 and flow into the bottom opening of the fixed tube 31.

[0023] In a further preferred embodiment of the present invention, Figure 5 , Figure 6 , Figure 8 and Fig. 9 As shown, the separation mechanism 4 includes a filter plate 41 in an annular shape, and both upper and lower sides of the filter plate 41 are inclined surfaces that are tilted from the middle to the outside. The filter plate 41 is rotatably sleeved on the top of the fixed tube 31 through a bearing, and a plurality of shifting plates 43 are fixedly sleeved on the top of the rotating shaft 32 through a sleeve, and the bottom side of each shifting plate 43 is in contact with the top of the fixed tube 31. In this embodiment, the rotating shaft 32 drives the paddle plate 43 to rotate synchronously, thereby pushing the liquid emerging from the top opening of the fixed tube 31 toward the outer peripheral side, so that the liquid slides along the inclined surface of the filter plate 41. During the flow of the liquid on the inclined surface of the filter plate 41, due to the interception of the filter plate 41, the rare earth oxides in the liquid can be intercepted on the top side of the filter plate 41. Due to the push of the subsequent flowing liquid on the top side inclined surface of the filter plate 41, the rare earth oxides on the filter plate 41 gradually flow to the outside of the filter plate 41, thereby preventing the rare earth oxides from clogging the filter plate 41 and affecting the subsequent liquid passing through the holes of the filter plate 41.

[0024] In a further preferred embodiment of the present invention, Figure 5 and Figure 6As shown, a filter cartridge 44 in an annular shape is sleeved on the outer peripheral side of the filter plate 41, and the inner ring wall of the filter cartridge 44 contacts the outer peripheral wall of the filter plate 41, and the outer peripheral wall of the filter cartridge 44 is gap-matched with the inner wall of the storage cylinder 1. A plurality of storage grooves 45 in an annular shape are opened from top to bottom in the cylinder wall of the filter cartridge 44, and a feed hole 46 is opened on the inner ring wall of the filter cartridge 44 at a position corresponding to the storage groove 45; In this embodiment, the rare earth oxides moving toward the outer peripheral side of the filter plate 41 pass through the feed hole 46 and fall into the storage tank 45 for storage, thereby preventing the rare earth oxides from falling back into the liquid in the storage cylinder 1 .

[0025] In a further preferred embodiment of the present invention, Figure 3 and Figure 4 As shown, the centrifugal mechanism 5 includes a circular plate 52, a sealing cover 51 is installed with internal threads at the top opening of the storage cylinder 1, the circular plate 52 is rotatably installed and penetrated at the center position of the sealing cover 51, and a first electric telescopic rod 53 is fixedly penetrated at the center position of the circular plate 52; In this embodiment, according to the above, when the rotating shaft 32 rotates, the stretching and conversion of the first electric telescopic rod 53 conflict with each other, so that the circular plate 52 can be synchronously driven to rotate through the friction between the rotating shaft 32 and the first electric telescopic rod 53, and then the filter cartridge 44 can be synchronously driven to rotate through the second electric telescopic rod 47, and the rare earth oxide in the storage tank 45 can be synchronously driven through the filter cartridge 44. The residual liquid in the rare earth oxide passes through the holes of the filter cartridge 44 and is thrown out of the filter cartridge 44 by centrifugal force, so that the rare earth oxide can be centrifugally dried.

[0026] In a further preferred embodiment of the present invention, Figure 2 , Figure 4 and Figure 5 As shown, a plurality of second electric telescopic rods 47 are fixedly mounted on the top side of the circular plate 52 in a circumferential array, and a push rod of each second electric telescopic rod 47 slides through the circular plate 52 and is fixedly connected to the filter cartridge 44; In this embodiment, when filtering out the rare earth oxides, the height of the filter cartridge 44 is adjusted by the second electric telescopic rod 47, so that the filter plate 41 is aligned with the multiple feed holes 46 in sequence, so that the multiple rare earth oxides are pushed into different storage tanks 45 in sequence for separate storage.

[0027] In a further preferred embodiment of the present invention, Figure 2 and Figure 7 As shown, a plurality of push plates 54 are arranged in a circumferential array between the fixed tube 31 and the filter plate 41, and the top end of each push plate 54 is fixedly connected to the outer arc wall of the filter plate 41, and the bottom ends of the plurality of push plates 54 are rotatably connected to the outer peripheral wall of the storage tube 1 through a collar and a bearing, and the filter plate 41 is arranged in an inclined shape; In this embodiment, when the filter cartridge 44 rotates, the friction between the filter cartridge 44 and the filter plate 41 drives the filter plate 41 to rotate synchronously, thereby driving the push plate 54 to rotate synchronously, stirring the liquid at the top of the storage cylinder 1, and further accelerating the mixing rate of the chemical agent and the rare earth mother liquor.

[0028] Working principle: Before using the improved rare earth oxide extraction equipment, the operator connects the other two interfaces of the electric-controlled three-way valve 2 to the discharge end of the rare earth mother liquid supply equipment and the feed end of the waste liquid storage equipment through the feed pipe, and then connects the feed end of the connecting pipe 7 to the discharge end of the chemical agent supply equipment. The installation of the improved rare earth oxide extraction equipment is completed; When the improved rare earth oxide extraction device is in use, the electric-controlled three-way valve 2 is opened, and the rare earth mother liquid supply device injects a suitable amount of rare earth mother liquid into the storage cylinder 1 through the electric-controlled three-way valve 2, and then the electric-controlled three-way valve 2 is closed, and then the chemical agent supply device injects a suitable amount of chemical agent into the storage cylinder 1 through one of the connecting pipes 7 and the pressure-limiting valve 6, and the loading operation in the storage cylinder 1 is completed; It should be noted that the liquid level of the rare earth mother solution in the storage cylinder 1 is located below the filter cylinder 44; After the loading operation in the storage barrel 1 is completed, the driver 34 starts to drive the impeller 33 to rotate continuously through the rotating shaft 32, and the rotating impeller 33 continuously pushes the liquid in the fixed tube 31 upward, so that a negative pressure chamber is continuously formed in the bottom opening of the fixed tube 31, and the liquid at the bottom of the storage barrel 1 is sucked into the bottom opening of the fixed tube 31 to replenish the liquid lost in the bottom opening of the fixed tube 31, and the liquid in the fixed tube 31 moves upward along the fixed tube 31 and is discharged from the top opening of the fixed tube 31, and at the same time, the rotating shaft 32 drives the paddle 43 to rotate synchronously, thereby pushing the liquid emerging from the top opening of the fixed tube 31 toward the outer peripheral side, so that the liquid slides along the inclined surface of the filter plate 41, and in the process of the liquid flowing on the inclined surface of the filter plate 41, the liquid passes through the holes on the filter plate 41, and is divided into several small streams of liquid and drips into the liquid in the storage barrel 1, so that the liquid in the storage barrel 1 is quickly mixed; It should be noted that, when the liquid mixing operation is performed, the first electric telescopic rod 53 pulls and contacts the rotating shaft 32, so that the rotating shaft 32 is synchronously driven to rotate the circular plate 52, and the filter cartridge 44 is synchronously driven to rotate through the second electric telescopic rod 47. At the same time, the friction between the filter cartridge 44 and the filter plate 41 drives the push plate 54 to rotate synchronously, stirring the liquid at the top of the storage cylinder 1 to accelerate the mixing of the chemical agent and the rare earth mother solution in the storage cylinder 1. Then the driver 34 stops running and the mixed liquid is allowed to stand, so that the oxide in the mother liquid forms solid particles and precipitates from the liquid and aggregates into solids. The solid particles then circulate between the liquid in the fixed tube 31 and the liquid in the storage cylinder 1 according to the above, so that the rare earth oxide is filtered out of the liquid through the filter plate 41, and due to the push of the flowing liquid on the top side slope of the filter plate 41, the rare earth oxide is pushed into the feed hole 46, and then passes through the feed hole 46 and falls into the corresponding storage tank 45 for storage; It should be noted that, when the rare earth oxides and the liquid are separated, since the push plate 54 does not rotate, the liquid on the outer peripheral side of the fixed tube 31 basically flows from top to bottom. At the same time, due to the effect of the gravity of the rare earth oxides themselves, the rare earth oxides in the liquid of the storage cylinder 1 move downward to the bottom opening of the fixed tube 31, so that all the rare earth oxides move to the top side of the filter plate 41 along with the liquid flow. After the separation of the rare earth oxide and the liquid is completed, the second electric telescopic rod 47 contracts and pulls the filter cartridge 44 upward, so that the filter cartridge 44 moves up until the top ring edge of the filter plate 41 is coplanar with the inner bottom side of the second feed hole 46, and then another chemical agent is added to the storage cartridge 1 from another pressure limiting valve 6 according to the chemical agent supply device, and the liquid in the storage cartridge 1 is mixed according to the above, and at the same time, the rotating filter cartridge 44 drives the rare earth oxide in the storage tank 45 to rotate synchronously, so that the liquid in the rare earth oxide passes through the holes of the filter cartridge 44 and is thrown out of the filter cartridge 44, and the rare earth oxide in the filter cartridge 44 is centrifugally dried, and then various rare earth oxides in the rare earth mother liquor are extracted from the rare earth mother liquor in turn according to the above, and are prevented from being stored in different storage tanks 45; After a variety of rare earth oxides are extracted from the rare earth mother liquor, the operator unscrews the cover 51 from the top opening of the storage barrel 1, and then pulls the filter cartridge 44 out of the storage barrel 1 through the second electric telescopic rod 47, so that the filter cartridge 44 can be taken out together with the rare earth oxides for further processing. When necessary, the electric three-way valve 2 can be opened to discharge the liquid in the storage barrel 1 from the electric three-way valve 2.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A rare earth oxide extraction device for recycling rare earth waste, comprising a storage cylinder (1), characterized in that: A plurality of pressure limiting valves (6) are connected and installed at the middle position of the outer peripheral wall of the storage cylinder (1), and a connecting pipe (7) is connected and installed at the feed end of the pressure limiting valve (6). The inner bottom wall of the storage cylinder (1) is arranged in a hemispherical shape. An electric-controlled three-way valve (2) is arranged on the outer peripheral side of the bottom of the storage cylinder (1), and the liquid inlet end of the electric-controlled three-way valve (2) extends to the lowest point of the inner bottom wall of the storage cylinder (1) and is fixedly connected to the storage cylinder (1). A stirring mechanism (3) is arranged in the storage cylinder (1), and a separation mechanism (4) is arranged at the top end of the stirring mechanism (3). A centrifugal mechanism (5) is arranged in the top opening of the storage cylinder (1).

2. The rare earth oxide extraction equipment for recycling rare earth waste according to claim 1, characterized in that: The stirring mechanism (3) comprises a fixed tube (31), the fixed tube (31) being arranged in the storage tube (1), a rotating shaft (32) being installed through the fixed tube (31), a plurality of impellers (33) being fixedly sleeved on the outer peripheral side of the rotating shaft (32) from top to bottom, and the outer peripheral wall of the impeller (33) and the inner wall of the fixed tube (31) being gap-matched, a driver (34) being fixedly installed on the bottom side of the storage tube (1), the bottom of the rotating shaft (32) being rotatably inserted through the wall of the storage tube (1) and being fixedly connected to the driving end of the driver (34).

3. The rare earth oxide extraction equipment for recycling rare earth waste according to claim 2, characterized in that: Two connecting rods (35) are arranged opposite to each other at the bottom end of the fixed tube (31), and both ends of each connecting rod (35) are respectively fixedly connected to the inner bottom wall of the storage cylinder (1) and the bottom end of the fixed tube (31).

4. The rare earth oxide extraction equipment for recycling rare earth waste according to claim 3, characterized in that: The separation mechanism (4) comprises a filter plate (41) arranged in an annular shape, the upper and lower sides of the filter plate (41) are arranged in an inclined shape that rises from the middle to the outside, the filter plate (41) is rotatably sleeved on the top of the fixed tube (31) through a bearing, and a plurality of shifting plates (43) are fixedly sleeved on the top of the rotating shaft (32) through a sleeve, and the bottom side of each shifting plate (43) is in contact with the top of the fixed tube (31).

5. The rare earth oxide extraction equipment for recycling rare earth waste according to claim 4, characterized in that: A filter cartridge (44) in an annular shape is sleeved on the outer peripheral side of the filter plate (41), and the inner annular wall of the filter cartridge (44) contacts the outer peripheral wall of the filter plate (41). The outer peripheral wall of the filter cartridge (44) is gap-matched with the inner wall of the storage cartridge (1). A plurality of storage grooves (45) in an annular shape are provided in the cylinder wall of the filter cartridge (44) from top to bottom, and a feed hole (46) is provided on the inner annular wall of the filter cartridge (44) at a position corresponding to the storage groove (45).

6. The rare earth oxide extraction equipment for recycling rare earth waste according to claim 5, characterized in that: The centrifugal mechanism (5) comprises a circular plate (52), a sealing cover (51) is internally threadedly mounted on the top opening of the storage cylinder (1), the circular plate (52) is rotatably mounted through the center of the sealing cover (51), and a first electric telescopic rod (53) is fixedly mounted through the center of the circular plate (52).

7. The rare earth oxide extraction equipment for recycling rare earth waste according to claim 6, characterized in that: A plurality of second electric telescopic rods (47) are fixedly mounted in a circular array on the top side of the circular plate (52), and a push rod of each second electric telescopic rod (47) slides through the circular plate (52) and is fixedly connected to the filter cartridge (44).

8. The rare earth oxide extraction equipment for recycling rare earth waste according to claim 7, characterized in that: A plurality of push plates (54) are arranged in a circular array between the fixed tube (31) and the filter plate (41), and the top end of each push plate (54) is fixedly connected to the outer arc wall of the filter plate (41), and the bottom ends of the plurality of push plates (54) are rotatably connected to the outer peripheral wall of the storage cylinder (1) via a collar and a bearing, and the filter plate (41) is arranged in an inclined state.

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