NMP waste liquid pool filtering device

Abstract

The utility model belongs to the technical field of NMP waste liquid treatment, and particularly relates to an NMP waste liquid pool filtering device which comprises a filtering box and a fixing circular ring, the fixing circular ring is arranged above the filtering box, a stand column is fixedly installed on the bottom face of the fixing circular ring, a fixing circular plate is fixedly installed on the bottom face of the stand column, and a cover plate is fixedly installed on the upper surface of the filtering box. The upper surface of the cover plate is fixedly connected with the bottom surface of a fixed circular plate, a mixing mechanism is arranged in the fixed circular plate, and a filtering mechanism is arranged in the filtering box. According to the NMP waste liquid pool filtering device, by arranging the mixing mechanism, before NMP waste liquid is filtered, a transmission shaft drives a stirring rod to rotate to fully stir and mix the waste liquid, so that the situation that impurities in the waste liquid are accumulated and directly filtered to cause blockage, and the filtering effect is influenced is avoided; the connecting pipe is fixedly mounted at the lower part of the outer surface of the connecting pipe, and the two control valves are arranged on the two sides of the connecting pipe to control the waste liquid to flow, so that the other side continues to filter the waste liquid when the filter plate on one side is cleaned, and the working efficiency is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of NMP waste liquid treatment, in particular to an NMP waste liquid pool filtering device. Background Art

[0002] NMP is widely used in the refining of high-grade lubricating oils, the synthesis of polymers, insulating materials, pesticides, pigments, cleaning agents, etc. It is used as an absorbent for acetylene and high-grade alkynes in the natural gas to acetylene industry. NMP waste liquid needs to be filtered to remove impurities.

[0003] At present, when the filter plate of the existing waste liquid recovery device is replaced, the filtering work will stop, which affects the working efficiency and thus affects the filtering effect.

[0004] As disclosed in Chinese patent CN215137698U, a device for removing solid impurities in NMP waste liquid comprises a flange and a liquid inlet pipe, a flange is arranged on the side of the liquid outlet pipe away from the tower body, the liquid outlet pipe is connected to a filter pipe through the flange, a filter screen is arranged on the inner wall of the filter pipe, a water guide member for reducing water flow through the filter screen is arranged on the side of the filter screen close to the flange in the filter pipe, the water guide member comprises a rotating shaft rotatably connected to the inner wall of the filter pipe, and a water guide sheet fixed on the rotating shaft, the filter screen can be slidably arranged in the filter pipe along the axial direction of the filter pipe, a buffer component for applying elastic force to the filter screen is arranged on the side of the inner wall of the filter pipe away from the flange, and an activated carbon filter layer is also arranged on the side of the inner wall of the filter pipe away from the flange. The utility model can effectively filter solid impurities in the NMP waste liquid by arranging the water guide sheet and the filter screen, and prevent the solid impurities from flowing into the next process equipment with the NMP waste liquid.

[0005] However, the device for removing solid impurities from NMP waste liquid does not mix and stir the waste liquid before treating the NMP waste liquid so that the liquid and impurities are evenly mixed. After the impurity removal operation is performed, the impurities may aggregate and cause blockage, which may affect the filtering effect.

[0006] For this reason, we propose a NMP waste liquid pool filtering device to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a NMP waste liquid pool filtering device to solve the problems raised in the above background technology.

[0008] To achieve the above object, the utility model provides the following technical solutions: a NMP waste liquid pool filtering device, comprising a filter box and a fixed ring, the fixed ring is arranged above the filter box, a column is fixedly installed on the bottom surface of the fixed ring, a fixed circular plate is fixedly installed on the bottom surface of the column, a cover plate is fixedly installed on the upper surface of the filter box, the upper surface of the cover plate is fixedly connected to the bottom surface of the fixed circular plate, a mixing mechanism is arranged inside the fixed ring, and a filtering mechanism is arranged inside the filter box;

[0009] The mixing mechanism includes a stirring tank, a connecting plate, a feeding cylinder, a driving motor, a transmission shaft, a stirring rod, a circular hole and a connecting pipe. The stirring tank is fixedly installed on the inner wall of the fixed circular ring, the connecting plate is fixedly installed on the upper surface of the stirring tank, the feeding cylinder is fixedly installed on the upper surface of the connecting plate, the driving motor is fixedly installed on the upper surface of the connecting plate, the transmission shaft is fixedly installed on the output end of the driving motor, the stirring rod is fixedly installed on the outer surface of the transmission shaft, the circular hole passes through the inner bottom surface of the stirring tank, and the connecting pipe is fixedly installed on the inner wall of the circular hole.

[0010] Preferably, the filtering mechanism includes a control unit and a filtering unit, the control unit includes a connecting pipe, a connecting flange, a control valve, a valve stem, a valve plate, a fixed pipe and a through hole, the through hole runs through both sides of the upper surface of the cover plate, the connecting pipe is fixedly installed on the lower part of the outer surface of the connecting pipe, the connecting flange is fixedly installed on the outer surface of the connecting pipe, the control valve is fixedly installed on the bottom surface of the connecting flange, the valve stem is installed on the inner wall of the control valve, the valve plate is fixedly installed on the outer surface of the valve stem, and the fixed pipe is fixedly installed on the inner wall of the through hole.

[0011] Preferably, the filter unit includes a mounting groove, a filter plate, a filter hole and a pull ring, the mounting groove passes through the front side of the filter box, the filter plate is installed inside the mounting groove, the filter hole passes through the upper surface of the filter plate, and the pull ring is fixedly installed on the front side of the filter plate.

[0012] Preferably, a partition is fixedly installed on the inner wall of the filter box, drainage holes are penetrated in the middle positions on both sides of the inner bottom surface of the filter box, drainage pipes are fixedly installed on the inner walls of the drainage holes, support columns are fixedly installed on the bottom surface of the filter box, and the support columns are symmetrically distributed at the four corners of the bottom surface of the filter box.

[0013] Preferably, a hole is passed through the middle position of the upper surface of the connecting plate, the upper end of the transmission shaft passes through the hole and is fixedly connected to the output end of the driving motor, and the stirring rods are distributed on the outer surface of the transmission shaft in sequence with equal intervals. When the transmission shaft rotates, multiple stirring rods are driven to rotate to fully stir and mix the NMP waste liquid.

[0014] Preferably, the mounting grooves are symmetrically distributed on both sides of the front of the filter box, the mounting grooves are uniformly spaced and sequentially run through the front of the filter box, the filter holes are uniformly spaced and sequentially run through the upper surface of the filter plate, and two layers of filter plates are provided to perform multiple filtrations on the NMP waste liquid to improve the filtration effect.

[0015] Preferably, the connecting flanges are symmetrically distributed on the outer surfaces of both ends of the connecting pipe, a circular groove is opened on the inner wall of the control valve and the outer surface of the valve stem contacts the inner wall of the circular groove, the valve plate is symmetrically distributed on both sides of the outer surface of the valve stem, and the diameter of the valve plate is the same as the inner diameter of the control valve.

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

[0017] 1. The NMP waste liquid pool filtering device is provided with a mixing mechanism. Before filtering the NMP waste liquid, the transmission shaft drives the stirring rod to rotate to fully stir and mix the waste liquid to avoid the accumulation of impurities in the waste liquid and the blockage caused by direct filtering to affect the filtering effect.

[0018] 2. The NMP waste liquid pool filtering device controls the flow of waste liquid by fixing a connecting pipe at the lower part of the outer surface of the connecting pipe and arranging two control valves on both sides of the connecting pipe so that when the filter plate on one side is cleaned, the other side continues to filter the waste liquid without affecting the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a control unit of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the hybrid mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the filter mechanism structure of the utility model.

[0023] In the figure: 1. filter box; 2. cover plate; 3. support column; 4. fixed circular plate; 401. column; 402. fixed circular ring; 403. stirring tank; 404. connecting plate; 405. feed column; 406. drive motor; 407. transmission shaft; 408. stirring rod; 409. circular hole; 410. connecting pipe; 411. connecting pipe; 412. connecting flange; 413. control valve; 414. valve stem; 415. valve lever; 416. fixed pipe; 417. through hole; 418. partition; 419. mounting groove; 420. filter plate; 421. filter hole; 422. pull ring; 423. drainage hole; 424. drainage pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0026] Embodiment 1: A NMP waste liquid pool filtering device comprises a filter box 1 and a fixed ring 402, the fixed ring 402 is arranged above the filter box 1, a column 401 is fixedly installed on the bottom surface of the fixed ring 402, a fixed circular plate 4 is fixedly installed on the bottom surface of the column 401, a cover plate 2 is fixedly installed on the upper surface of the filter box 1, the upper surface of the cover plate 2 is fixedly connected to the bottom surface of the fixed circular plate 4, a mixing mechanism is arranged inside the fixed ring 402, and a filtering mechanism is arranged inside the filter box 1;

[0027] The mixing mechanism includes a stirring tank 403, a connecting plate 404, a feeding cylinder 405, a driving motor 406, a transmission shaft 407, a stirring rod 408, a circular hole 409 and a connecting pipe 410. The stirring tank 403 is fixedly installed on the inner wall of the fixed ring 402, the connecting plate 404 is fixedly installed on the upper surface of the stirring tank 403, the feeding cylinder 405 is fixedly installed on the upper surface of the connecting plate 404, the driving motor 406 is fixedly installed on the upper surface of the connecting plate 404, the transmission shaft 407 is fixedly installed on the output end of the driving motor 406, the stirring rod 408 is fixedly installed on the outer surface of the transmission shaft 407, the circular hole 409 runs through the inner bottom surface of the stirring tank 403, and the connecting pipe 410 is fixedly installed on the inner wall of the circular hole 409.

[0028] A hole is passed through the middle of the upper surface of the connecting plate 404, and the upper end of the transmission shaft 407 passes through the hole and is fixedly connected to the output end of the driving motor 406. The stirring rods 408 are distributed on the outer surface of the transmission shaft 407 in an evenly spaced order. By setting a mixing mechanism, the transmission shaft 407 drives the stirring rods 408 to rotate before filtering the NMP waste liquid to fully stir and mix the waste liquid to avoid the accumulation of impurities in the waste liquid, which directly causes clogging during filtration and affects the filtering effect.

[0029] Connect the feed column 405 to pour the NMP waste liquid into the stirring tank 403, start the power supply of the drive motor 406 so that the drive motor 406 works to drive the transmission shaft 407 to rotate and drive the stirring rod 408 to rotate to stir and mix the NMP waste liquid in the stirring tank 403 and then discharge it through the connecting pipe 410.

[0030] Embodiment 2: Based on embodiment 1, the filtering mechanism includes a control unit and a filtering unit, the control unit includes a connecting pipe 411, a connecting flange 412, a control valve 413, a valve stem 414, a valve plate 415, a fixed pipe 416 and a through hole 417, the through hole 417 runs through both sides of the upper surface of the cover plate 2, the connecting pipe 411 is fixedly installed on the lower part of the outer surface of the connecting pipe 410, the connecting flange 412 is fixedly installed on the outer surface of the connecting pipe 411, the control valve 413 is fixedly installed on the bottom surface of the connecting flange 412, the valve stem 414 is installed on the inner wall of the control valve 413, the valve plate 415 is fixedly installed on the outer surface of the valve stem 414, and the fixed The fixed pipe 416 is fixedly installed on the inner wall of the through hole 417, the connecting flanges 412 are symmetrically distributed on the outer surfaces of both ends of the connecting pipe 411, a circular groove is opened on the inner wall of the control valve 413 and the outer surface of the valve stem 414 is in contact with the inner wall of the circular groove, the valve plate 415 is symmetrically distributed on both sides of the outer surface of the valve stem 414, and the diameter of the valve plate 415 is the same as the inner diameter of the control valve 413. By fixing the connecting pipe 411 on the lower part of the outer surface of the connecting pipe 410 and arranging two control valves 413 on both sides of the connecting pipe 411 to control the flow of waste liquid, it is convenient to continue filtering the waste liquid on the other side when cleaning the filter plate 420 on one side without affecting the work efficiency.

[0031] The filter unit includes a mounting groove 419, a filter plate 420, a filter hole 421 and a pull ring 422. The mounting groove 419 runs through the front of the filter box 1, the filter plate 420 is installed inside the mounting groove 419, the filter hole 421 runs through the upper surface of the filter plate 420, the pull ring 422 is fixedly installed on the front of the filter plate 420, a partition 418 is fixedly installed on the inner wall of the filter box 1, drainage holes 423 are penetrated at the middle positions on both sides of the inner bottom surface of the filter box 1, a drainage pipe 424 is fixedly installed on the inner wall of the drainage hole 423, a support column 3 is fixedly installed on the bottom surface of the filter box 1, the support column 3 is symmetrically distributed at the four corners of the bottom surface of the filter box 1, the mounting grooves 419 are symmetrically distributed on both sides of the front of the filter box 1, the mounting grooves 419 run through the front of the filter box 1 in equal intervals, and the filter holes 421 run through the upper surface of the filter plate 420 in equal intervals.

[0032] The NMP waste liquid discharged through the connecting pipe 410 flows into the connecting pipe 411 and is divided to both sides and enters the inside of the filter box 1 through the control valve 413, and then is filtered through the filter plate 420 to remove impurities. The filtered liquid is discharged through the drain pipe 424. When cleaning the filter plate 420 on one side of the inside of the filter box 1, the valve stem 414 on one side is rotated to drive the valve lever 415 to rotate and close the internal channel of the control valve 413, and then the pull ring 422 is pulled to drive the filter plate 420 to be pulled out from the inside of the installation groove 419 for cleaning, and the other side continues to filter the NMP waste liquid.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A NMP waste liquid pool filtering device, comprising a filter box (1) and a fixed ring (402), wherein the fixed ring (402) is arranged above the filter box (1), a column (401) is fixedly installed on the bottom surface of the fixed ring (402), a fixed circular plate (4) is fixedly installed on the bottom surface of the column (401), a cover plate (2) is fixedly installed on the upper surface of the filter box (1), and the upper surface of the cover plate (2) is fixedly connected to the bottom surface of the fixed circular plate (4), characterized in that: A mixing mechanism is provided inside the fixed circular ring (402), and a filtering mechanism is provided inside the filtering box (1); The mixing mechanism comprises a stirring tank (403), a connecting plate (404), a feeding column (405), a driving motor (406), a transmission shaft (407), a stirring rod (408), a circular hole (409) and a connecting pipe (410); the stirring tank (403) is fixedly mounted on the inner wall of the fixed circular ring (402); the connecting plate (404) is fixedly mounted on the upper surface of the stirring tank (403); the feeding column (405) is fixedly mounted on the upper surface of the connecting plate (404); the driving motor (406) is fixedly mounted on the upper surface of the connecting plate (404); the transmission shaft (407) is fixedly mounted on the output end of the driving motor (406); the stirring rod (408) is fixedly mounted on the outer surface of the transmission shaft (407); the circular hole (409) penetrates the inner bottom surface of the stirring tank (403); and the connecting pipe (410) is fixedly mounted on the inner wall of the circular hole (409).

2. A NMP waste liquid pool filter according to claim 1, characterized in that: The filtering mechanism comprises a control unit and a filtering unit. The control unit comprises a connecting pipe (411), a connecting flange (412), a control valve (413), a valve stem (414), a valve lever (415), a fixed pipe (416) and a through hole (417). The through hole (417) passes through both sides of the upper surface of the cover plate (2). The connecting pipe (411) is fixedly installed on the lower part of the outer surface of the connecting pipe (410). The connecting flange (412) is fixedly installed on the outer surface of the connecting pipe (411). The control valve (413) is fixedly installed on the bottom surface of the connecting flange (412). The valve stem (414) is installed on the inner wall of the control valve (413). The valve lever (415) is fixedly installed on the outer surface of the valve stem (414). The fixed pipe (416) is fixedly installed on the inner wall of the through hole (417).

3. A NMP waste liquid pool filter according to claim 2, characterized in that: The filter unit comprises a mounting groove (419), a filter plate (420), a filter hole (421) and a pull ring (422); the mounting groove (419) passes through the front face of the filter box (1); the filter plate (420) is installed inside the mounting groove (419); the filter hole (421) passes through the upper surface of the filter plate (420); and the pull ring (422) is fixedly installed on the front face of the filter plate (420).

4. A NMP waste liquid pool filter according to claim 1, characterized in that: A partition (418) is fixedly mounted on the inner wall of the filter box (1), drainage holes (423) are penetrated at the middle positions on both sides of the inner bottom surface of the filter box (1), drainage pipes (424) are fixedly mounted on the inner walls of the drainage holes (423), and support columns (3) are fixedly mounted on the bottom surface of the filter box (1), and the support columns (3) are symmetrically distributed at the four corners of the bottom surface of the filter box (1).

5. A NMP waste liquid pool filter according to claim 1, characterized in that: A hole is formed in the middle of the upper surface of the connecting plate (404), and the upper end of the transmission shaft (407) passes through the hole and is fixedly connected to the output end of the driving motor (406). The stirring rods (408) are distributed on the outer surface of the transmission shaft (407) in an evenly spaced order.

6. A NMP waste liquid pool filter according to claim 3, characterized in that: The installation grooves (419) are symmetrically distributed on both sides of the front of the filter box (1); the installation grooves (419) are uniformly spaced and sequentially penetrate the front of the filter box (1); and the filter holes (421) are uniformly spaced and sequentially penetrate the upper surface of the filter plate (420).

7. A NMP waste liquid pool filter according to claim 2, characterized in that: The connecting flange (412) is symmetrically distributed on the outer surfaces of both ends of the connecting pipe (411), a circular groove is provided on the inner wall of the control valve (413) and the outer surface of the valve stem (414) contacts the inner wall of the circular groove, the valve plate (415) is symmetrically distributed on both sides of the outer surface of the valve stem (414), and the diameter of the valve plate (415) is the same as the inner diameter of the control valve (413).

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