NMP waste liquid pretreatment device

Abstract

The utility model discloses an NMP waste liquid pretreatment device, which belongs to the technical field of NMP waste liquid treatment and comprises a box body, a mounting groove is formed in one side of the outside of the box body, a guide groove is formed in the middle end of the inner wall in the box body, an insertion groove is formed in the guide groove in the inner wall of one side of the box body, clamping blocks are arranged on the inner walls of the two sides in the insertion groove, and a clamping spring is arranged at one end of each clamping block. A screen frame is arranged in the mounting groove, a guide block is arranged on the periphery of the screen frame, an insertion plate is arranged at one end of the guide block, fixed clamping plates are arranged on the two sides of one end of the insertion plate, a sliding groove is formed in the middle of the insertion plate, a movable clamping plate is arranged in the sliding groove, and a reset spring is arranged on one side of the movable clamping plate. The screen frame is installed and fixed, guiding is conducted through the guiding groove and the guiding block, the stability of inserting connection is ensured, the sliding groove and the movable clamping plate are matched, the functions of pulling the end plate, releasing the clamping state and achieving disassembly after pressing are achieved, and the design greatly improves the convenience of disassembly and assembly of the screen frame.

Description

Technical Field

[0001] This utility model belongs to the field of NMP waste liquid treatment technology, and specifically relates to an NMP waste liquid pretreatment device. Background Technology

[0002] With the rapid development of industries such as chemical and electronics, N-methylpyrrolidone (NMP) has become increasingly widely used as an important organic solvent in these fields. However, the problem of NMP waste liquid treatment has also become prominent. NMP waste liquid contains a large amount of organic matter. If it is discharged directly, it will not only waste resources, but also cause serious pollution to the environment.

[0003] Currently, in existing NMP waste liquid pretreatment devices, the filters are mostly fixed inside the device, which makes them prone to clogging or damage after long-term use, affecting their normal operation. Disassembly and cleaning are also quite troublesome and inconvenient to operate. Therefore, we propose an NMP waste liquid pretreatment device. Utility Model Content

[0004] The purpose of this invention is to provide an NMP waste liquid pretreatment device to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an NMP waste liquid pretreatment device, comprising a housing, a mounting groove, and a screen frame. The housing has a mounting groove at the middle of one outer side. The housing has a guide groove extending to the mounting groove at the middle of its inner wall. A slot is formed within the guide groove on the inner wall of the housing away from the mounting groove. A locking block is provided on both inner walls of the slot. A locking spring is provided at one end of each locking block extending into the inner wall of the slot. A screen frame is provided inside the mounting groove. A guide block is provided on the outer periphery of the screen frame. Insert plates corresponding to the slot are provided on both sides of the guide block near the slot. Fixed locking plates are provided on both sides of one end of each insert plate. A sliding groove is formed in the middle of the insert plate. A movable locking plate extending to both ends of the sliding groove is slidably disposed inside the sliding groove. A return spring is provided on one side of each movable locking plate.

[0006] Preferably, an end plate is fixedly installed on the outer end of the screen frame away from the insert plate. A corrugated rubber sleeve is provided on the outer periphery of the side of the end plate near the screen frame. A sealing plate is provided on the other end of the corrugated rubber sleeve. The two ends of the corrugated rubber sleeve are fixedly connected to the end plate and the sealing plate respectively by gluing. A compression spring is provided inside the corrugated rubber sleeve. A sealing gasket is fixedly installed on the inner side of the mounting groove.

[0007] Preferably, a filter screen is installed in the middle of the inside of the screen frame, and a hopper is provided at the bottom of the screen frame, with the bottom end of the hopper tapering inward.

[0008] Preferably, a temperature sensor is fixedly installed on the inner wall of one side of the bottom of the box, and a heat exchange tube is fixedly installed at the bottom of the box, with both ends of the heat exchange tube extending to the same side of the outside of the box.

[0009] Preferably, a feed inlet is provided at the top center of the box, the feed inlet extends to the center directly above the screen frame, and a drain outlet is provided at the bottom of the box, with a valve body inside the drain outlet.

[0010] Preferably, an observation window is provided on the outer side of the enclosure, and double-layered tempered glass is fixedly embedded inside the observation window.

[0011] Preferably, a control panel is provided at the middle of the side of the enclosure with an observation window, and the control panel is fixedly installed on the outer side of the enclosure by means of embedding.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By using a plug-in and snap-fit ​​method, the fixed plate and the snap-fit ​​block form a snap-fit ​​state to install and fix the screen frame. The guide groove and guide block guide the plate to ensure that it is stably inserted into the slot, thus ensuring the stability of the plug-in. In addition, with the cooperation of the sliding groove and the movable plate, the snap-fit ​​state can be released by pressing and pulling the end plate, so as to realize the disassembly function. This design greatly improves the convenience of screen frame assembly and disassembly.

[0014] 2. By setting a sealing plate, corrugated rubber sleeve and compression spring on one side of the end plate, and cooperating with the sealing gasket set inside the mounting groove, the compression spring applies pressure to the sealing plate to make it in close contact with the sealing gasket, thereby achieving a seal at the opening of the mounting groove. The hopper is used to guide the liquid at the filter to be away from the opening of the mounting groove, thereby preventing leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model;

[0017] Figure 3 This is a schematic diagram of the sieve frame structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the sealing plate and corrugated rubber sleeve structure of this utility model;

[0019] Figure 5 This is a schematic cross-sectional view of the insert plate and slot structure of this utility model.

[0020] In the diagram: 1. Housing; 2. Observation window; 3. Control panel; 4. Feed inlet; 5. Mounting groove; 6. Sealing gasket; 7. Guide groove; 8. Slot; 9. Locking block; 10. Locking spring; 11. Screen frame; 12. Filter screen; 13. Discharge hopper; 14. Insert plate; 15. Fixed locking plate; 16. Slide groove; 17. Movable locking plate; 18. Return spring; 19. End plate; 20. Sealing plate; 21. Corrugated rubber sleeve; 22. Compression spring; 23. Heat exchange tube; 24. Temperature sensor; 25. Drain outlet; 26. Guide block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution for an NMP waste liquid pretreatment device: it includes a box body 1, an installation groove 5, and a screen frame 11. The installation groove 5 is provided in the middle of one side of the outer side of the box body 1. The guide groove 7 extending to the installation groove 5 is provided in the middle of the inner wall of the box body 1. The slot 8 is provided in the guide groove 7 on the inner wall of the side of the box body 1 away from the installation groove 5. The inner walls of the slot 8 are provided with locking blocks 9. The end of the locking block 9 extending into the inner wall of the slot 8 is provided with a locking spring 10. The screen frame 11 is provided inside the installation groove 5. The outer periphery of the screen frame 11 is provided with a guide block 26. The two sides of the guide block 26 near the slot 8 are provided with insert plates 14 corresponding to the slot 8. The two sides of the insert plate 14 are provided with fixing plates 15. The middle of the insert plate 14 is provided with a sliding groove 16. The sliding groove 16 is slidably provided with movable plates 17 extending to the outside of both ends of the sliding groove 16. The side of the movable plates 17 is provided with a return spring 18.

[0023] Specifically, an end plate 19 is fixedly installed on the outer side of the screen frame 11 away from the insert plate 14. A corrugated rubber sleeve 21 is provided on the outer periphery of the side of the end plate 19 close to the screen frame 11. A sealing plate 20 is provided on the other end of the corrugated rubber sleeve 21. The two ends of the corrugated rubber sleeve 21 are fixedly connected to the end plate 19 and the sealing plate 20 respectively by gluing. A compression spring 22 is provided inside the corrugated rubber sleeve 21. A sealing gasket 6 is fixedly installed on the inner side of the mounting groove 5.

[0024] Specifically, a filter screen 12 is installed in the middle of the screen frame 11, and a hopper 13 is provided at the bottom of the screen frame 11, with the bottom of the hopper 13 tapering inward.

[0025] Specifically, a temperature sensor 24 is fixedly installed on the inner wall of one side of the bottom of the box 1, and a heat exchange tube 23 is fixedly installed at the bottom of the box 1. Both ends of the heat exchange tube 23 extend to the same side of the outside of the box 1.

[0026] Specifically, a feed inlet 4 is provided at the top center of the box 1, and the feed inlet 4 extends to the center of the screen frame 11 directly above it. A drain outlet 25 is provided at the bottom of the box 1, and a valve body is provided inside the drain outlet 25.

[0027] Specifically, an observation window 2 is provided on the outer side of the enclosure 1, and double-layered tempered glass is fixedly embedded inside the observation window 2.

[0028] Specifically, a control panel 3 is provided at the middle of the side of the enclosure 1 where the observation window 2 is located. The control panel 3 is fixedly installed on the outer side of the enclosure 1 by means of embedding.

[0029] In this embodiment, during use, the waste liquid enters the screen frame 11 inside the tank 1 through the inlet 4. The filter screen 12 inside the screen frame 11 filters the liquid, achieving solid-liquid separation. The liquid falls below the filter screen 12 and is guided by the discharge hopper 13 to prevent it from spreading to the installation tank 5. Finally, it falls to the bottom of the tank 1. A cooling device is connected to the heat exchange tube 23, allowing the liquid to flow through the heat exchange tube 23 below the liquid surface inside the tank 1, thus achieving heat exchange. The temperature is monitored in real time by the temperature sensor 24. Finally, the liquid is discharged through the drain port 25. By observing the amount of solid matter inside the sieve frame 11 through the observation window 2, when too much solid matter is produced after solid-liquid separation inside the sieve frame 11, causing the filter screen 12 to become clogged or damaged, the end plate 19 is pushed to move the sieve frame 11, guide block 26, and insert plate 14 deeper into the slot 8. Since the insert plate 14, after the sieve frame 11 is installed, is inserted into the slot 8, and the fixing plate 15 engages with the locking block 9, pressing the end plate 19 will cause the movable locking plate 17 on the insert plate 14 to gradually press against the locking block 9 until it moves to the other side of the locking block 9, thus releasing the solid matter. The fixed plate 15 and the movable plate 17 are on the same side of the locking block 9. Then, the end plate 19 is pulled outward, causing the insertion plate 14 to move outward from the slot 8. Since the movable plate 17 is slidably connected to the insertion plate 14 through the slide groove 16, and the movable plate 17 is blocked by the locking block 9 in this state, the two are in a relatively stationary state. Therefore, when the insertion plate 14 moves outward, it will drive the fixed plate 15 to gradually move closer to the movable plate 17 until the fixed plate 15 and the movable plate 17 merge. Under the continuous pulling force, the movable plate 17 squeezes the locking block 9, causing the locking block 9 to retract into the slot. Inside the inner wall of slot 8, the movable plate 17 and the fixed plate 15 are in contact with the locking state, allowing the movable plate 17 and the fixed plate 15 to pass quickly through the locking block 9 in sequence, finally pulling the screen frame 11 out of the mounting groove 5 to achieve disassembly. After replacing the screen frame 11 or the filter screen 12, it is inserted from the mounting groove 5 until the insert plate 14 is inserted into the inside of the slot 8, and the fixed plate 15 moves to one side of the locking block 9 to form a locking state, thereby achieving the installation and fixation of the screen frame 11. In this state, the sealing plate 20 is squeezed tightly against the sealing gasket 6 under the pressure of the compression spring 22 to form a seal and prevent leakage.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An NMP waste liquid pretreatment device, comprising a box body (1), a mounting groove (5) and a screen frame (11), characterized in that: An installation groove (5) is provided at the middle of one side of the outer side of the box (1). A guide groove (7) extending to the installation groove (5) is provided at the middle of the inner wall of the box (1). A slot (8) is provided in the guide groove (7) on the inner wall of the box (1) away from the installation groove (5). A locking block (9) is provided on both sides of the inner wall of the slot (8). A locking spring (10) is provided at one end of the locking block (9) extending into the inner wall of the slot (8). A screen frame (11) is provided inside the installation groove (5). The outer periphery of the screen frame (11) is provided with a guide block (26). The guide block (26) is provided with a plate (14) corresponding to the slot (8) on both sides of one end of the guide block (26) near the slot (8). The plate (14) is provided with a fixing plate (15) on both sides of one end. The middle of the plate (14) is provided with a sliding groove (16). The sliding groove (16) is slidably provided with a movable plate (17) extending to the outside of both ends of the sliding groove (16). A return spring (18) is provided on one side of the movable plate (17).

2. The NMP waste liquid pretreatment device according to claim 1, characterized in that: An end plate (19) is fixedly installed on the outer side of the screen frame (11) away from the insert plate (14). A corrugated rubber sleeve (21) is provided on the outer periphery of the side of the end plate (19) close to the screen frame (11). A sealing plate (20) is provided on the other end of the corrugated rubber sleeve (21). The two ends of the corrugated rubber sleeve (21) are fixedly connected to the end plate (19) and the sealing plate (20) respectively by gluing. A compression spring (22) is provided inside the corrugated rubber sleeve (21). A sealing gasket (6) is fixedly installed on the inner side of the mounting groove (5).

3. The NMP waste liquid pretreatment device according to claim 1, characterized in that: A filter screen (12) is installed in the middle of the inside of the screen frame (11), and a hopper (13) is provided at the bottom of the screen frame (11), with the bottom end of the hopper (13) contracting inward.

4. The NMP waste liquid pretreatment device according to claim 1, characterized in that: A temperature sensor (24) is fixedly installed on the inner wall of one side of the bottom of the box (1), and a heat exchange tube (23) is fixedly installed at the bottom of the box (1). Both ends of the heat exchange tube (23) extend to the same side of the outside of the box (1).

5. The NMP waste liquid pretreatment device according to claim 1, characterized in that: The top center of the box (1) is provided with a feed inlet (4), which extends to the center of the screen frame (11) directly above. The bottom of the box (1) is provided with a drain outlet (25), and the drain outlet (25) is provided with a valve body inside.

6. The NMP waste liquid pretreatment device according to claim 1, characterized in that: An observation window (2) is provided on the outer side of the box (1), and double-layered tempered glass is fixedly embedded inside the observation window (2).

7. The NMP waste liquid pretreatment device according to claim 1, characterized in that: The outer side of the enclosure (1) is provided with an observation window (2) and a control panel (3) is provided at the middle of one side. The control panel (3) is fixedly installed on the outer side of the enclosure (1) by means of inlay.

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