NMP waste liquid filtering and separating device

Abstract

The utility model belongs to the technical field of NMP waste liquid treatment, and particularly relates to an NMP waste liquid filtering and separating device which comprises a fixed circular ring and a supporting column, the supporting column is fixedly installed on the bottom face of the fixed circular ring, a supporting base is fixedly installed on the bottom face of the supporting column, a fixed tank is fixedly installed on the inner wall of the fixed circular ring, and a baffle is fixedly installed on the upper portion of the inner wall of the fixed tank. A centrifugal mechanism is arranged in the fixed tank, a stirring mechanism is arranged on the upper surface of the fixed tank, and the stirring mechanism comprises a clamping plate, a feeding column casing, a second driving motor, a transmission shaft and a stirring rod. According to the NMP waste liquid filtering and separating device, the stirring mechanism is arranged, a transmission shaft rotates to drive a stirring rod to rotate, NMP waste liquid which is subjected to centrifugal separation is subjected to auxiliary stirring, the separating efficiency is improved, and the centrifugal efficiency is improved; by arranging the discharging unit, when the liquid is discharged after centrifugal separation is conducted on the NMP waste liquid, a valve rod rotates to drive a valve plate to rotate to adjust the size of a channel in the valve body, the discharging amount is controlled, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of NMP waste liquid treatment, in particular to an NMP waste liquid filtering and separation 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 filtering and separating NMP waste liquid, the pumping flow rate of NMP waste liquid through the pump is relatively high. The solid impurities contained in the NMP waste liquid will follow the liquid flow into the recovery device, which will affect the subsequent NMP recovery and cause the separation effect to be not good enough.

[0004] For example, a filtering device for NMP recovery disclosed in Chinese patent CN216726174U comprises a tank body and a partition plate arranged in the tank body, wherein the partition plate divides the interior of the tank body into a liquid inlet chamber and a liquid outlet chamber, a filter screen is arranged at the upper end of the partition plate, the liquid inlet chamber and the liquid outlet chamber are connected through the mesh of the filter screen, a liquid inlet port connected to the liquid inlet chamber is arranged on one side of the liquid inlet chamber, a liquid outlet port connected to the liquid outlet chamber is arranged on one side of the liquid outlet chamber, and the liquid outlet port is located above the liquid inlet port; the filtering device can filter solid impurities contained in NMP waste liquid and improve the quality of NMP recovered liquid.

[0005] However, the filtering device for NMP recovery lacks a corresponding stirring mechanism to stir the waste liquid evenly when filtering and separating the NMP waste liquid to avoid the problem of clogging of the filter holes during filtration caused by accumulation of solids, which affects the separation effect.

[0006] Therefore, we propose a NMP waste liquid filtering and separation device to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a NMP waste liquid filtering and separation device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an NMP waste liquid filtering and separation device, comprising a fixed ring and a support column, the support column is fixedly installed on the bottom surface of the fixed ring, the bottom surface of the support column is fixedly installed with a support base, the inner wall of the fixed ring is fixedly installed with a fixed tank, the upper part of the inner wall of the fixed tank is fixedly installed with a baffle, a centrifugal mechanism is arranged inside the fixed tank, and a stirring mechanism is arranged on the upper surface of the fixed tank;

[0009] The stirring mechanism includes a clamping plate, a feed column, a second drive motor, a transmission shaft and a stirring rod. The clamping plate is clamped to the upper surface of the baffle plate, the feed column is fixedly installed on the upper surface of the clamping plate, the second drive motor is fixedly installed on the upper surface of the clamping plate, the transmission shaft is fixedly installed on the output end of the second drive motor, and the stirring rod is fixedly installed on the outer surface of the transmission shaft.

[0010] Preferably, the centrifugal mechanism includes a connecting unit and a rotating unit, the connecting unit includes a connecting column, a centrifugal bucket, a separation hole and a through hole, the through hole passes through the middle position of the bottom surface of the fixed tank, the connecting column is installed on the inner wall of the through hole, the centrifugal bucket is fixedly installed on the upper surface of the connecting column, and the separation hole passes through the outer surface of the centrifugal bucket.

[0011] Preferably, the rotating unit includes a fixed circular plate, a column, a fixed box, a cover plate, a first drive motor, a worm and a worm wheel, the fixed circular plate is arranged below the fixed tank, the column is fixedly installed on the upper surface of the fixed circular plate, the fixed box is fixedly installed on the upper surface of the column, the cover plate is fixedly installed on the upper surface of the fixed box, the first drive motor is fixedly installed on the side of the fixed box, the worm is fixedly installed on the output end of the first drive motor, the worm wheel is installed on the inner bottom surface of the fixed box, and the upper surface of the worm wheel is fixedly connected to the bottom surface of the connecting column.

[0012] Preferably, a hole is passed through the middle of the upper surface of the cover plate, the connecting column passes through the hole and is fixedly connected to the upper surface of the worm wheel, and the outer surface of the worm is meshed with the outer surface of the worm wheel in the middle.

[0013] Preferably, a discharge unit is provided on the bottom surface of the fixed tank, and the discharge unit includes a drain hole, a connecting pipe, a connecting flange, a valve body, a valve stem and a valve plate. The drain hole passes through the inner bottom surface of the fixed tank, the connecting pipe is fixedly installed on the inner wall of the drain hole, the connecting flange is fixedly installed on the lower part of the outer surface of the connecting pipe, the valve body is fixedly installed on the bottom surface of the connecting flange, the valve stem is installed on the inner wall of the valve body, and the valve plate is fixedly installed on the outer surface of the valve stem.

[0014] Preferably, a hole is passed through the middle position of the upper surface of the clamping plate, the upper end of the transmission shaft passes through the hole and is fixedly connected to the output end of the second drive motor, and the stirring rods are distributed in sequence on the outer surface of the transmission shaft at equal intervals.

[0015] Preferably, the diameter of the centrifugal bucket is smaller than the inner diameter of the fixed tank, and the separation holes are arranged in sequence at equal intervals through the outer surface of the centrifugal bucket.

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

[0017] 1. The NMP waste liquid filtering and separation device is provided with a stirring mechanism to drive the stirring rod to rotate through the rotation of the transmission shaft to assist in stirring the NMP waste liquid being centrifuged, thereby improving the separation efficiency and thus improving the centrifugal efficiency.

[0018] 2. The NMP waste liquid filtering and separation device is provided with a discharge unit so that when discharging the liquid after centrifugal separation of the NMP waste liquid, the rotation of the valve stem drives the valve plate to rotate to adjust the size of the internal channel of the valve body to control the discharge amount for easy operation. 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 centrifugal mechanism structure of the utility model;

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

[0022] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0023] In the figure: 1. fixed ring; 2. support column; 201. support base; 3. fixed tank; 301. baffle; 302. fixed circular plate; 303. column; 304. fixed box; 305. cover plate; 306. first drive motor; 307. worm; 308. worm wheel; 309. connecting column; 310. centrifugal barrel; 311. separation hole; 312. through hole; 313. clamping plate; 314. feed column; 315. second drive motor; 316. transmission shaft; 317. stirring rod; 318. drainage hole; 319. connecting pipe; 320. connecting flange; 321. valve body; 322. valve stem; 323. valve lever. 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 filtering and separation device comprises a fixed ring 1 and a support column 2, wherein the support column 2 is fixedly mounted on the bottom surface of the fixed ring 1, a support base 201 is fixedly mounted on the bottom surface of the support column 2, a fixed tank 3 is fixedly mounted on the inner wall of the fixed ring 1, a baffle 301 is fixedly mounted on the upper part of the inner wall of the fixed tank 3, a centrifugal mechanism is arranged inside the fixed tank 3, and a stirring mechanism is arranged on the upper surface of the fixed tank 3;

[0027] The stirring mechanism includes a clamping plate 313, a feed cylinder 314, a second drive motor 315, a transmission shaft 316 and a stirring rod 317. The clamping plate 313 is clamped on the upper surface of the baffle 301, the feed cylinder 314 is fixedly installed on the upper surface of the clamping plate 313, the second drive motor 315 is fixedly installed on the upper surface of the clamping plate 313, the transmission shaft 316 is fixedly installed on the output end of the second drive motor 315, and the stirring rod 317 is fixedly installed on the outer surface of the transmission shaft 316. A hole is penetrated in the middle position of the upper surface of the clamping plate 313, and the upper end of the transmission shaft 316 passes through the hole and is fixedly connected to the output end of the second drive motor 315. The stirring rods 317 are distributed on the outer surface of the transmission shaft 316 in sequence with equal intervals. By setting the stirring mechanism, the transmission shaft 316 rotates to drive the stirring rods 317 to rotate, and the NMP waste liquid undergoing centrifugal separation is auxiliary stirred to improve the separation efficiency, so that the centrifugal efficiency is improved.

[0028] A discharge unit is provided on the bottom surface of the fixed tank 3, and the discharge unit includes a drainage hole 318, a connecting pipe 319, a connecting flange 320, a valve body 321, a valve stem 322 and a valve plate 323. The drainage hole 318 runs through the inner bottom surface of the fixed tank 3, the connecting pipe 319 is fixedly installed on the inner wall of the drainage hole 318, the connecting flange 320 is fixedly installed on the lower part of the outer surface of the connecting pipe 319, the valve body 321 is fixedly installed on the bottom surface of the connecting flange 320, the valve stem 322 is installed on the inner wall of the valve body 321, and the valve plate 323 is fixedly installed on the outer surface of the valve stem 322. By providing the discharge unit, when the liquid is discharged after the NMP waste liquid is centrifuged, the rotation of the valve stem 322 drives the valve plate 323 to rotate and adjust the size of the internal channel of the valve body 321 to control the amount of discharge, so as to facilitate operation.

[0029] The NMP waste liquid is poured into the centrifugal barrel 310 arranged inside the fixed tank 3 through the feed column 314, and the power supply of the second drive motor 315 is started so that the second drive motor 315 works to drive the transmission shaft 316 to rotate, thereby driving the stirring rod 317 to rotate to stir the NMP waste liquid to mix it evenly and perform centrifugal separation operation. The NMP waste liquid after filtration and separation is discharged through the drainage hole 318, and the valve stem 322 is rotated to drive the valve plate 323 to rotate to open the internal channel of the valve body 321 for discharge, and the solid matter remains inside the centrifugal barrel 310. The clamping plate 313 is removed to clean the inside of the centrifugal barrel 310.

[0030] Embodiment 2: Based on embodiment 1, the centrifugal mechanism includes a connecting unit and a rotating unit, the connecting unit includes a connecting column 309, a centrifugal bucket 310, a separation hole 311 and a through hole 312, the through hole 312 passes through the middle position of the inner bottom surface of the fixed tank 3, the connecting column 309 is installed on the inner wall of the through hole 312, the centrifugal bucket 310 is fixedly installed on the upper surface of the connecting column 309, the separation hole 311 passes through the outer surface of the centrifugal bucket 310, the diameter of the centrifugal bucket 310 is smaller than the inner diameter of the fixed tank 3, and the separation holes 311 pass through the outer surface of the centrifugal bucket 310 at equal intervals.

[0031] The rotating unit includes a fixed circular plate 302, a column 303, a fixed box 304, a cover plate 305, a first drive motor 306, a worm 307 and a worm wheel 308. The fixed circular plate 302 is arranged below the fixed tank 3, the column 303 is fixedly installed on the upper surface of the fixed circular plate 302, the fixed box 304 is fixedly installed on the upper surface of the column 303, the cover plate 305 is fixedly installed on the upper surface of the fixed box 304, the first drive motor 306 is fixedly installed on the side of the fixed box 304, the worm 307 is fixedly installed on the output end of the first drive motor 306, the worm wheel 308 is installed on the inner bottom surface of the fixed box 304, the upper surface of the worm wheel 308 is fixedly connected to the bottom surface of the connecting column 309, a hole is passed through the middle position of the upper surface of the cover plate 305, the connecting column 309 passes through the hole and is fixedly connected to the upper surface of the worm wheel 308, and the outer surface of the worm 307 is meshed with the outer surface of the worm wheel 308.

[0032] The first drive motor 306 drives the stirring rod 317 to rotate, and drives the worm gear 308 to rotate through meshing, thereby driving the connecting column 309 and the centrifugal bucket 310 to rotate, and the NMP waste liquid inside the centrifugal bucket 310 is separated by high-speed centrifugal filtration. The separated solid matter remains inside the centrifugal bucket 310, and the liquid leaves the centrifugal bucket 310 through the separation hole 311 and is discharged through the drainage hole 318 that penetrates the bottom surface of the fixed tank 3.

[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 filtering and separation device, comprising a fixed ring (1) and a support column (2), wherein the support column (2) is fixedly mounted on the bottom surface of the fixed ring (1), and a support base (201) is fixedly mounted on the bottom surface of the support column (2), characterized in that: A fixed tank (3) is fixedly mounted on the inner wall of the fixed circular ring (1), a baffle (301) is fixedly mounted on the upper part of the inner wall of the fixed tank (3), a centrifugal mechanism is arranged inside the fixed tank (3), and a stirring mechanism is arranged on the upper surface of the fixed tank (3); The stirring mechanism comprises a clamping plate (313), a feeding column (314), a second driving motor (315), a transmission shaft (316) and a stirring rod (317); the clamping plate (313) is clamped on the upper surface of the baffle (301); the feeding column (314) is fixedly mounted on the upper surface of the clamping plate (313); the second driving motor (315) is fixedly mounted on the upper surface of the clamping plate (313); the transmission shaft (316) is fixedly mounted on the output end of the second driving motor (315); and the stirring rod (317) is fixedly mounted on the outer surface of the transmission shaft (316).

2. A NMP waste liquid filtering and separation device according to claim 1, characterized in that: The centrifugal mechanism comprises a connecting unit and a rotating unit, wherein the connecting unit comprises a connecting column (309), a centrifugal bucket (310), a separation hole (311) and a through hole (312), wherein the through hole (312) passes through the middle position of the inner bottom surface of the fixed tank (3), the connecting column (309) is installed on the inner wall of the through hole (312), the centrifugal bucket (310) is fixedly installed on the upper surface of the connecting column (309), and the separation hole (311) passes through the outer surface of the centrifugal bucket (310).

3. A NMP waste liquid filtering and separation device according to claim 2, characterized in that: The rotating unit comprises a fixed circular plate (302), a column (303), a fixed box (304), a cover plate (305), a first driving motor (306), a worm (307) and a worm wheel (308); the fixed circular plate (302) is arranged below the fixed tank (3); the column (303) is fixedly mounted on the upper surface of the fixed circular plate (302); the fixed box (304) is fixedly mounted on the upper surface of the column (303); the cover plate (305) is fixedly mounted on the upper surface of the fixed box (304); the first driving motor (306) is fixedly mounted on the side of the fixed box (304); the worm (307) is fixedly mounted on the output end of the first driving motor (306); the worm wheel (308) is mounted on the inner bottom surface of the fixed box (304); and the upper surface of the worm wheel (308) is fixedly connected to the bottom surface of the connecting column (309).

4. A NMP waste liquid filtering and separation device according to claim 3, characterized in that: A hole is formed in the middle of the upper surface of the cover plate (305), and the connecting column (309) passes through the hole to be fixedly connected to the upper surface of the worm wheel (308), and the outer surface of the worm (307) is meshed with the outer surface of the worm wheel (308) in the middle.

5. A NMP waste liquid filtering and separation device according to claim 1, characterized in that: The bottom surface of the fixed tank (3) is provided with a discharge unit, and the discharge unit comprises a drainage hole (318), a connecting pipe (319), a connecting flange (320), a valve body (321), a valve stem (322) and a valve plate (323). The drainage hole (318) passes through the inner bottom surface of the fixed tank (3), the connecting pipe (319) is fixedly installed on the inner wall of the drainage hole (318), the connecting flange (320) is fixedly installed on the lower part of the outer surface of the connecting pipe (319), the valve body (321) is fixedly installed on the bottom surface of the connecting flange (320), the valve stem (322) is installed on the inner wall of the valve body (321), and the valve plate (323) is fixedly installed on the outer surface of the valve stem (322).

6. A NMP waste liquid filtering and separation device according to claim 1, characterized in that: A hole is formed in the middle of the upper surface of the clamping plate (313), and the upper end of the transmission shaft (316) passes through the hole and is fixedly connected to the output end of the second drive motor (315). The stirring rods (317) are distributed on the outer surface of the transmission shaft (316) in an evenly spaced order.

7. A NMP waste liquid filtering and separation device according to claim 2, characterized in that: The diameter of the centrifugal bucket (310) is smaller than the inner diameter of the fixed tank (3), and the separation holes (311) are arranged in sequence at equal intervals and penetrate the outer surface of the centrifugal bucket (310).

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