Residual metal recovery device for nmp waste liquid

Abstract

The utility model relates to NMP waste liquid's residual metal recovery device belongs to NMP waste liquid residual material recovery technology, including the waste liquid tank for storing NMP waste liquid and setting the base at the bottom of waste liquid tank, the top of waste liquid tank is provided with the feeding pipe, is equipped with the discharge port on the lateral wall of waste liquid tank, is provided with the liquid injection support of liftable in waste liquid tank, and the liquid injection support is linked with the feeding pipe, and several guide rods are longitudinally arranged in waste liquid tank, and the filter frame that can move up and down is installed on the guide rod through bearing, the filter frame is provided with the pusher assembly that can push the filtered metal residue to the side of discharge port, the inner wall top of waste liquid tank is fixed with first motor, and the first screw rod is connected on the telescopic end of first motor, and the first screw rod is with filter frame screw connection for controlling the lift of filter frame, the utility model novel structure, the good splash -proof effect is convenient for the metal residue to send out fast, and the practicality is stronger.

Description

Technical Field

[0001] This utility model relates to the field of NMP waste liquid residue recycling technology, and in particular to a device for recycling residual metals from NMP waste liquid. Background Technology

[0002] The recovery of residual metals from NMP wastewater is a crucial step in lithium battery production and the chemical industry. Existing NMP wastewater residual metal recovery devices primarily employ chemical precipitation and solvent extraction methods. These devices are typically tanks or containers, and often require the addition of treatment agents to facilitate metal precipitation. However, during the injection process, the fixed height of the injection port, coupled with the continuous decrease in the liquid level as metal is removed, leads to a significant height difference between the injection port and the liquid level. This results in substantial splashing during injection, causing a large amount of wastewater to adhere to the inner wall of the device, thus affecting metal recovery efficiency. Furthermore, existing recovery devices often require an additional openable cover and tools for unloading, which is inconvenient and slow. To address these issues, we propose a residual metal recovery device for NMP wastewater. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides a residual metal recovery device for NMP waste liquid, which has good anti-splash effect and is easy to unload.

[0004] The technical solution adopted by this utility model is as follows: It includes a waste liquid tank for storing NMP waste liquid and a base located at the bottom of the waste liquid tank. A feeding pipe is provided on the top of the waste liquid tank, and a discharge port is opened on the side wall of the waste liquid tank. A liftable liquid injection support is provided inside the waste liquid tank, and the liquid injection support is connected to the feeding pipe. Several guide rods are longitudinally arranged inside the waste liquid tank, and a filter frame that can move up and down is mounted on the guide rods via bearings. A pusher assembly is provided on the filter frame to push the filtered metal residue towards the discharge port. The system delivers treatment agents, such as pH adjusters or metal precipitants, into the waste liquid tank via a feeding pipe. The treatment agents are then evenly discharged into the waste liquid tank through a liquid injection support. The discharge height of the liquid injection support is adjustable to ensure that the treatment agents are discharged close to the surface of the NMP waste liquid to prevent splashing. Metal residues in the NMP waste liquid and metal particles precipitated during subsequent treatment are filtered by the filter frame. After the metal precipitates on the filter frame, the filter frame is raised to one side of the discharge port, and the metal residue is pushed out by the pusher assembly.

[0005] Preferably, a first motor is fixed to the top of the inner wall of the waste liquid tank, and a first lead screw is connected to the telescopic end of the first motor. The first lead screw is threadedly connected to the filter frame and is used to control the lifting and lowering of the filter frame. The first motor is turned on to control the rotation of the first lead screw, and the rotation of the first lead screw is used to push the filter frame to move. When waiting for the metal residue to settle, the filter frame is at the bottom. When unloading is required, the filter frame is lifted to one side of the unloading port.

[0006] Preferably, the pushing assembly includes a second motor fixed to the top of the filter frame and a second lead screw connected to the output shaft of the second motor. A pushing plate is threaded onto the second lead screw. The front and rear ends and the bottom end of the pushing plate are in contact with the filter frame. The second motor is turned on to control the rotation of the second lead screw, which pushes the pushing plate to move, thereby pushing out the metal residue located in the filter frame.

[0007] Preferably, a reinforcing bracket is also fixedly provided on the top of the filter frame, and one end of the reinforcing bracket is rotatably connected to the second lead screw to provide a reinforcing effect for the second lead screw and ensure that the second lead screw can rotate stably.

[0008] Preferably, the injection support includes a fixed base fixed to the inner wall of the top of the waste liquid tank and a dispersion seat connected to the fixed base via a telescopic tube. One end of the telescopic tube is connected to the feeding tube, so that the treatment agent added by the feeding tube can enter the dispersion seat through the telescopic tube.

[0009] Preferably, the bottom of the dispersion seat is provided with a plurality of dispersion tubes in a circular array, and both the bottom of the dispersion tubes and the dispersion seat are provided with discharge holes, so that the treatment agent entering the dispersion tubes can be evenly discharged through each discharge hole.

[0010] Preferably, an electric actuator is provided between the fixed seat and the dispersing seat. The distance between the fixed seat and the dispersing seat is controlled by the electric actuator, thereby controlling the height of the drain hole at the bottom of the dispersing seat. After the waste liquid level drops, the height of the drain hole can drop accordingly, effectively preventing excessive height difference between the drain hole and the waste liquid level from causing splashing.

[0011] Preferably, a recycling box is detachably installed on the outer wall of the waste liquid tank below the discharge port to facilitate the collection of metal residue discharged from the discharge port.

[0012] The beneficial effects of this utility model are as follows: This utility model controls the discharge of the treatment agent through the liquid injection bracket. Since the discharge height of the liquid injection bracket is adjustable, it can ensure that the treatment agent can be close to the liquid surface of the NMP waste liquid during discharge to prevent splashing. The metal residue in the NMP waste liquid and the metal particles precipitated during subsequent treatment can be filtered by the filter frame. After the metal settles on the filter frame, the filter frame is raised to one side of the discharge port, and then the metal residue is pushed out by the pusher component. The structure is novel, the anti-splash effect is good, and it is convenient to quickly send out the metal residue. It is highly practical. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a front sectional view of the present invention;

[0016] Figure 4 This is a schematic diagram of the material pushing component and filter frame in this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the fluid injection stent in this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Waste liquid tank; 2. Base; 3. Feeding pipe; 4. Liquid injection bracket; 401. Fixed seat; 402. Telescopic pipe; 403. Dispersion seat; 404. Dispersion pipe; 405. Discharge hole; 406. Electric actuator; 5. Guide rod; 6. Bearing; 7. Filter frame; 8. Pushing assembly; 801. Second motor; 802. Second lead screw; 803. Reinforcing bracket; 804. Pushing plate; 9. Discharge port; 10. Recycling box; 11. First motor; 12. First lead screw. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1-5As shown, this embodiment provides a residual metal recovery device for NMP waste liquid, including a waste liquid tank 1 for storing NMP waste liquid and a base 2 disposed at the bottom of the waste liquid tank 1. A feeding pipe 3 is provided on the top of the waste liquid tank 1, and a discharge port 9 is provided on the side wall of the waste liquid tank 1. A liftable liquid injection bracket 4 is provided inside the waste liquid tank 1, and the liquid injection bracket 4 is connected to the feeding pipe 3. Several guide rods 5 are arranged longitudinally inside the waste liquid tank 1. A filter frame 7 that can move up and down is installed on the guide rods 5 through bearings 6. A pusher assembly 8 is provided on the filter frame 7 to push the filtered metal residue towards the discharge port 9. A recovery box 10 is detachably installed on the outer wall of the waste liquid tank 1 below the discharge port 9 to facilitate the collection of metal residue discharged from the discharge port 9. In actual use, the treatment agent, such as pH adjuster or metal precipitant, is delivered into the waste liquid tank 1 through the feed pipe 3. The treatment agent is evenly discharged into the waste liquid tank 1 through the injection support 4. At the same time, the discharge height of the injection support 4 is adjustable to ensure that the treatment agent is close to the liquid surface of the NMP waste liquid during discharge to prevent splashing. The metal residue in the NMP waste liquid and the metal particles precipitated during subsequent treatment can be filtered by the filter frame 7. After the metal precipitates on the filter frame 7, the filter frame 7 is raised to one side of the discharge port 9, and the metal residue is pushed out by the pusher assembly 8. Compared with the existing metal recovery device, the present application has a novel structure, good anti-splash effect, and facilitates the rapid discharge of metal residue, making it highly practical.

[0021] like Figure 4 As shown, a first motor 11 is fixed to the top of the inner wall of the waste liquid tank 1. A first lead screw 12 is connected to the telescopic end of the first motor 11. The first lead screw 12 is threadedly connected to the filter frame 7 and is used to control the lifting and lowering of the filter frame 7. The first motor 11 is turned on to control the rotation of the first lead screw 12. The rotation of the first lead screw 12 is used to push the filter frame 7 to move. When waiting for the metal residue to settle, the filter frame 7 is at the bottom. When unloading is required, the filter frame 7 is lifted to one side of the discharge port 9.

[0022] The feeding assembly 8 includes a second motor 801 fixed to the top of the filter frame 7 and a second lead screw 802 connected to the output shaft of the second motor 801. A feeding plate 804 is threaded onto the second lead screw 802. The front and rear ends and the bottom end of the feeding plate 804 are in contact with the filter frame 7. The second motor 801 controls the rotation of the second lead screw 802, which pushes the feeding plate 804 to move, thereby pushing out the metal residue located in the filter frame 7. Both the first motor 11 and the second motor 801 need to be waterproof bidirectional motors that can provide forward and reverse rotation drive. A reinforcing bracket 803 is also fixedly installed on the top of the filter frame 7. One end of the reinforcing bracket 803 is rotatably connected to the second lead screw 802 to provide a reinforcing effect for the second lead screw 802 and ensure that the second lead screw 802 can rotate stably.

[0023] Specifically, such as Figure 5 As shown, the injection support 4 includes a fixed base 401 fixed to the inner wall of the top of the waste liquid tank 1 and a dispersion seat 403 connected to the fixed base 401 via a telescopic tube 402. One end of the telescopic tube 402 is connected to the feeding tube 3, so that the treatment agent added by the feeding tube 3 can enter the dispersion seat 403 through the telescopic tube 402. The bottom of the dispersion seat 403 is provided with several dispersion tubes 404 arranged in a ring array. Both the bottom of the dispersion tubes 404 and the dispersion seat 403 are provided with discharge holes 405, so that the treatment agent entering the dispersion tubes 404 can be evenly discharged through each discharge hole 405. An electric actuator 406 is provided between the fixed base 401 and the dispersion seat 403. The distance between the fixed base 401 and the dispersion seat 403 is controlled by the electric actuator 406, thereby controlling the height of the discharge hole at the bottom of the dispersion seat 403. After the waste liquid level drops, the height of the discharge hole can drop accordingly, effectively preventing excessive height difference between the discharge hole and the waste liquid level from causing splashing.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A residual metal recovery device for NMP waste liquid, comprising a waste liquid tank (1) for storing NMP waste liquid and a base (2) disposed at the bottom of the waste liquid tank (1), wherein a feeding pipe (3) is provided on the top of the waste liquid tank (1), and a discharge port (9) is provided on the side wall of the waste liquid tank (1), characterized in that: The waste liquid tank (1) is equipped with a liftable liquid injection bracket (4), which is connected to the feeding pipe (3). Several guide rods (5) are arranged longitudinally inside the waste liquid tank (1). A filter frame (7) that can move up and down is installed on the guide rod (5) through a bearing (6). A pusher assembly (8) that can push the filtered metal residue toward the discharge port (9) is provided on the filter frame (7).

2. The residual metal recovery device for NMP waste liquid according to claim 1, characterized in that: The top of the inner wall of the waste liquid tank (1) is fixed with a first motor (11), and a first lead screw (12) is connected to the telescopic end of the first motor (11). The first lead screw (12) is threadedly connected to the filter frame (7) and is used to control the lifting and lowering of the filter frame (7).

3. The residual metal recovery apparatus for NMP waste solution according to claim 1, characterized by: The feeding assembly (8) includes a second motor (801) fixed on the top of the filter frame (7) and a second lead screw (802) connected to the output shaft of the second motor (801). A feeding plate (804) is threaded onto the second lead screw (802), and the front and rear ends and the bottom end of the feeding plate (804) are in contact with the filter frame (7).

4. The residual metal recovery apparatus for NMP waste solution according to claim 3, characterized by: The top of the filter frame (7) is also fixedly provided with a reinforcing bracket (803), one end of which is rotatably connected to the second lead screw (802).

5. The residual metal recovery apparatus for NMP waste solution according to claim 1, characterized by: The liquid injection support (4) includes a fixed seat (401) fixed to the inner wall of the top of the waste liquid tank (1) and a dispersion seat (403) connected to the fixed seat (401) through a telescopic tube (402). One end of the top of the telescopic tube (402) is connected to the feeding tube (3).

6. The residual metal recovery apparatus for NMP waste solution according to claim 5, characterized by: The bottom of the dispersion seat (403) is provided with a plurality of dispersion tubes (404) arranged in a ring array, and the bottom of both the dispersion tubes (404) and the dispersion seat (403) are provided with discharge holes (405).

7. The residual metal recovery apparatus for NMP waste solution according to claim 5, characterized by: An electric actuator (406) is provided between the fixed base (401) and the distributed base (403).

8. The residual metal recovery apparatus for NMP waste solution according to claim 1, characterized by: The waste liquid tank (1) has a removable recycling box (10) installed on its outer wall below the discharge port (9).

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