CN215232571U

CN215232571U - Particle removing and detecting combined device in finished product NMP

Info

Publication number: CN215232571U
Application number: CN202120553087.0U
Authority: CN
Inventors: 王其合; 许林俊; 吕远
Original assignee: Jinwei Environmental Protection Technology Changzhou Co ltd
Current assignee: Jinwei Environmental Protection Technology Changzhou Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-12-21
Anticipated expiration: 2031-03-18

Abstract

The utility model belongs to the technical field of the filtration equipment technique and specifically relates to a granule is got rid of and is detected combined use device in finished product NMP, including the finished product jar, the finished product jar has connected gradually primary filter, secondary filter and tertiary filter through the filtration pipeline, and tertiary filter passes through the backward flow circulating line and is connected with the finished product jar, installs first three-way valve on the circulating line, and first three-way valve is connected with the filling pipeline, still is connected with the detector between tertiary filter and the backward flow circulating line, is connected with the second three-way valve between tertiary filter and the detector, and the second three-way valve is located between first three-way valve and the tertiary filter; the utility model discloses well design has three filter, can get rid of the small granule in the finished product NMP step by step, and the structural design of backward flow circulating line can carry out multiple circulation to finished product NMP and filter, through the utility model provides a device filters the back, and the granule quantity that is > 0.5 micron of per milliliter finished product the inside is less than 100.

Description

Particle removing and detecting combined device in finished product NMP

Technical Field

The utility model belongs to the technical field of the filtration equipment technique and specifically relates to a granule is got rid of and is detected allies oneself with and use device in finished product NMP.

Background

N-methylpyrrolidine, namely NMP, is an important chemical raw material, is a polar solvent with strong selectivity and good stability, is a solvent commonly used in the production of lithium batteries, in the production of lithium batteries, NMP is mostly used as a solvent when manufacturing anode and cathode materials of lithium batteries and diaphragms of lithium batteries, in the production, the NMP solvent used in the production is continuously volatilized along with the production of the anode and cathode materials and the diaphragm of the lithium battery, the volatilized NMP is usually pumped away in the production, absorbed, treated and then discharged, so that the NMP raw material is seriously wasted, meanwhile, certain pollution is caused, so that the volatile NMP gas is needed to be recycled, and the pollution is caused by the utilization rate of the NMP, however, the recovered NMP has low purity, and the absorption solution contains many visible large and small particle impurities, as well as molecular impurities such as absorbent, heavy impurities, metal ions, free amine and the like, so that the recovered NMP cannot be directly used as a solvent for recycling.

NMP treated by the existing NMP particle removing equipment cannot meet the requirements of customers.

Disclosure of Invention

The utility model aims at: the defects in the prior art are overcome, and the finished product NMP particle removing and detecting combined device is provided, after treatment by the device, the particle residual quantity in NMP can meet the customer requirements, and the particle size of the residual particles is smaller than 0.1 mu m.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a finished product NMP middle particle removing and detecting combined device comprises a finished product tank, wherein the finished product tank is sequentially connected with a primary filter, a secondary filter and a tertiary filter through a filtering pipeline, the aperture of filtering holes of the primary filter, the secondary filter and the tertiary filter is sequentially reduced, an electric pump is arranged between the finished product tank and the primary filter, the tertiary filter is connected with the finished product tank through a backflow circulating pipeline, a first three-way valve is installed on the circulating pipeline, and the first three-way valve is connected with a filling pipeline;

and a detector is also connected between the third-stage filter and the reflux circulating pipeline, a second three-way valve is connected between the third-stage filter and the detector, and the second three-way valve is positioned between the first three-way pipe and the third-stage filter.

Further, the primary filter, the secondary filter and the tertiary filter respectively comprise a cylinder body and a shell bottom positioned at the bottom of the cylinder body, the cylinder body is connected with the shell bottom through a flange, and a plurality of filter elements are filled in the cylinder body.

Furthermore, the flange comprises an upper flange plate and a lower flange plate, flange holes of the upper flange plate and the lower flange plate are respectively communicated with the edge of the flange, fastening bolts are arranged in the flange holes, the lower ends of the fastening bolts are hinged with the lower surface of the lower flange plate, and the upper ends of the fastening bolts are fastened with the upper flange plate through locking nuts.

Furthermore, lock nut includes the nut body and is located the rotatory ring on the nut body, and nut body and rotatory ring structure as an organic whole, the nut body is the round platform form.

Further, the lower surface of the lower flange plate and two sides of the flange hole are provided with fixing supports, and the fixing supports are connected with the fastening bolts through pin shafts.

Furthermore, a plurality of filter element fixing grooves are formed in the shell bottom.

Further, the filter core includes the ring shape skeleton that has a plurality of through-holes, the periphery cover of ring shape skeleton is equipped with the micropore filtration rete.

Furthermore, the filtering holes of the first-stage filter are 0.5 micron, the filtering holes of the second-stage filter are 0.2 micron, and the filtering holes of the third-stage filter are 0.1 micron.

Furthermore, the filtering pipeline is connected with the bottom of the finished product tank, and the backflow circulating pipeline is connected with the top of the finished product tank.

Furthermore, the filtering pipeline is respectively connected with the lower ends of the cylinder bodies of the first-stage filter, the second-stage filter and the third-stage filter.

Adopt the technical scheme of the utility model's beneficial effect is:

1. the utility model provides a granule is got rid of and is detected antithetical couplet and use device in the finished product NMP, the design has three filter, one-level filter's filtration pore is 0.5 micron order, two-level filter's filtration pore is 0.2 mu m, three-level filter's filtration pore is 0.1 micron order, can get rid of the small granule in the finished product NMP step by step, can improve filtration efficiency on the one hand, can reduce filtration cost simultaneously, three-level filter passes through the backward flow circulating line and is connected with the finished product jar, the structural design of backward flow circulating line can carry out multiple circulation filtration to finished product NMP, further improved filtration efficiency, warp the utility model provides a device filters the back, the granule quantity > 0.5 micron of every milliliter finished product the inside, is less than 100.

2. The utility model provides a granule is got rid of and is detected allies oneself with and use device in the finished product NMP, fastening bolt's lower extreme is articulated with the lower surface of lower flange dish, fasten through lock nut between fastening bolt's upper end and the last flange dish, the installation between barrel and the shell bottom is dismantled and need not be with the help of other instruments, the efficiency is dismantled in the installation has been improved, and, fastening bolt's lower extreme is articulated with the lower surface of lower flange dish, the ann changes and dismantles the in-process, need not dismantle fastening bolt get off, the installation dismantles process efficiency higher like this, spare part can not lose yet.

3. The utility model provides a granule is got rid of and is detected allies oneself with device in finished product NMP, through setting up two three-way pipes to can adjust the route and the closure that detect pipeline, backward flow circulating line and filling pipeline according to actual need, improved the efficiency of getting rid of tiny granule.

Drawings

Fig. 1 is the utility model provides a granule is got rid of and is detected the structure schematic diagram of allies oneself with device in finished product NMP.

Fig. 2 is a schematic view of the connection relationship between the upper flange and the lower flange of the present invention.

In the figure: 1 finished product jar, 2 filtration pipeline, 3 primary filter, 4 secondary filter, 5 tertiary filter, 6 second three-way valves, 7 first three-way valves, 8 filling pipeline, 9 detectors, 10 backward flow circulating line, 11 upper flange, 12 lower flange dishes, 13 nut bodies, 14 fastening bolt.

Detailed Description

The following describes the device for removing and detecting particles in the finished NMP according to the present invention with reference to the following embodiments and drawings.

Referring to fig. 1 and 2, a finished product NMP particle removing and detecting combined device includes a finished product tank 1, the finished product tank 1 is connected with a primary filter 3, a secondary filter 4 and a tertiary filter 5 in sequence through a filter pipeline 2, the filter hole diameters of the primary filter 3, the secondary filter 4 and the tertiary filter 5 are reduced in sequence, compared with the filter with the minimum filter hole diameter adopted by all the three filters, the filter hole diameters of the three filters are reduced in sequence, micro particles in the finished product NMP can be removed step by step, on one hand, the filter efficiency can be improved, and simultaneously, the filter cost can be reduced, an electric pump is arranged between the finished product tank 1 and the primary filter 3, the tertiary filter 5 is connected with the finished product tank 1 through a backflow circulation pipeline 10, the backflow circulation pipeline 10 has a structural design, the finished product NMP can be subjected to multiple circulation filtration, and the filter efficiency is further improved, install first three-way valve 7 on the circulating line, first three-way valve 7 is connected with filling pipeline 8, still be connected with detector 9 between tertiary filter 5 and the backward flow circulating line 10, be connected with second three-way valve 6 between tertiary filter 5 and the detector 9, second three-way valve 6 is located between first three-way pipe and the tertiary filter 5, set up two three-way valves, can be according to actual filtration condition adjustment detection pipeline, opening and closing of backward flow circulating line 10 and filling pipeline 8, energy consumption and consumptive material cost have still been saved when improving filtration and filling efficiency. Specifically, the filter pipeline 2 is connected with the bottom of the finished product tank 1, the reflux circulation pipeline 10 is connected with the top of the finished product tank 1, and the filter pipeline 2 is connected with the lower ends of the cylinders of the primary filter 3, the secondary filter 4 and the tertiary filter 5 respectively.

The working principle is as follows: after the finished NMP comes out of the finished product tank 1, the finished NMP is pumped into a filter by an electric pump for filtering, the finished NMP sequentially passes through a primary filter 3, a secondary filter 4 and a tertiary filter 5, a second three-way valve 6 is adjusted to close a detection pipeline, a first three-way valve 7 is adjusted to open a backflow circulating pipeline 10 and close a filling pipeline 8, the finished NMP is filtered for multiple times, the second three-way valve 6 is adjusted to open the detection pipeline, the first three-way valve 7 is adjusted to close the backflow circulating pipeline 10, the particle content in the finished NMP is detected by a detector 9, the second three-way valve 6 is continuously adjusted to close the detection pipeline after the particle content is qualified, the first three-way valve 7 is adjusted to close the backflow circulating pipeline 10 and open the filling pipeline 8, and the finished NMP is filled; and when the particle content is still unqualified, continuously adjusting the working states of the two three-way valves, and continuously performing reflux circulating filtration on the NMP until the particle detection is qualified.

First-order filter 3, secondary filter 4 and tertiary filter 5 in this embodiment include the barrel respectively and are located the shell bottom of barrel bottom, and the inside packing of barrel has a plurality of filter cores, through flange joint filter long-time work back between barrel and the shell bottom, need change filter core wherein, adopt this structural design, have improved the installation between barrel and the shell bottom and have dismantled efficiency to the replacement efficiency of filter core has been improved. In order to further improve the installation efficiency of the filter element and the fixing stability of the filter element in the filter, in this embodiment, a plurality of filter element fixing grooves are formed in the shell bottom, the depth of each filter element fixing groove is smaller than the height of the shell bottom, and the shape of the cross section of each filter element fixing groove is matched with that of the cross section of the filter element, and the filter element fixing grooves can be circular, rectangular and the like.

The flange in the embodiment comprises an upper flange plate 11 and a lower flange plate 12, flange holes of the upper flange plate 11 and the lower flange plate 12 are respectively communicated with the edge of the flange, fastening bolts 14 are arranged in the flange holes, the cross section of the flange holes in the embodiment is U-shaped, the side faces, away from the edge of the flange plate, of the flange holes are arc-shaped faces, the size of openings communicated with the edge of the flange holes is matched with the size of the fastening bolts 14, the lower ends of the fastening bolts 14 are hinged with the lower surface of the lower flange plate 12, the upper ends of the fastening bolts 14 are fastened with the upper flange plate 11 through locking nuts, specifically, each locking nut comprises a nut body 13 and a rotating ring positioned on the nut body 13, the nut body 13 and the rotating ring are of an integral structure, the cylindrical nut body 13 is in a circular truncated cone shape, compared with a circular cone-shaped structure, materials are saved, and the installation and the disassembly between the cylinder body and the shell bottom do not need to use other tools, the efficiency of installation dismantlement is improved, and, the lower extreme of fastening bolt 14 is articulated with the lower surface of lower flange 12, and the ann changes the dismantlement in-process, need not dismantle fastening bolt 14, and the installation dismantlement process efficiency is higher like this, and spare part can not lose yet.

The lower surface of the lower flange plate 12 and the two sides of the flange hole in the embodiment are provided with the fixing supports, the fixing supports are connected with the fastening bolts 14 through the pin shafts, and by adopting the structural design, the mounting and dismounting efficiency between the lower flange plate 12 and the fastening bolts 14 is high.

The filter core in this embodiment is equipped with the micropore filtration rete including the ring shape skeleton that has a plurality of through-holes, the periphery cover of ring shape skeleton, adopts this structural design, and the bulk strength of filter core is high, piles up a plurality of filter cores and packs into the filter after, can ensure the installation compactness between the adjacent filter core to ensure filtration efficiency. In order to further improve the filtering efficiency, the filtering pores of the primary filter 3 in the embodiment are in the micron order of 0.5, the filtering pores of the secondary filter 4 in the embodiment are in the micron order of 0.2, and the filtering pores of the tertiary filter 5 in the embodiment are in the micron order of 0.1.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary experimental examples, but that it can be implemented in other specific forms without departing from the spirit and essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment contains only one independent claim, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a granule is got rid of and is detected antithetical couplet and use device in finished product NMP which characterized in that: the device comprises a finished product tank, wherein the finished product tank is sequentially connected with a primary filter, a secondary filter and a tertiary filter through a filter pipeline, the aperture of filter holes of the primary filter, the secondary filter and the tertiary filter is sequentially reduced, an electric pump is arranged between the finished product tank and the primary filter, the tertiary filter is connected with the finished product tank through a backflow circulating pipeline, a first three-way valve is installed on the circulating pipeline, and the first three-way valve is connected with a filling pipeline;

2. The combination of particle removal and detection apparatus in a finished product NMP as claimed in claim 1, wherein: the primary filter, the secondary filter and the tertiary filter respectively comprise a cylinder body and a shell bottom positioned at the bottom of the cylinder body, the cylinder body is connected with the shell bottom through a flange, and a plurality of filter elements are filled in the cylinder body.

3. The combination of particle removal and detection apparatus in a finished product NMP as claimed in claim 2, wherein: the flange comprises an upper flange plate and a lower flange plate, flange holes of the upper flange plate and the lower flange plate are respectively communicated with the edge of the flange, fastening bolts are arranged in the flange holes, the lower ends of the fastening bolts are hinged with the lower surface of the lower flange plate, and the upper ends of the fastening bolts are fastened with the upper flange plate through locking nuts.

4. The combination of particle removal and detection apparatus in a finished product NMP according to claim 3, wherein: the locking nut comprises a nut body and a rotating ring positioned on the nut body, the nut body and the rotating ring are of an integrated structure, and the nut body is in a round table shape.

5. The combination of particle removal and detection apparatus in a finished product NMP according to claim 3, wherein: and the lower surface of the lower flange plate and two sides of the flange hole are provided with fixing supports, and the fixing supports are connected with the fastening bolts through pin shafts.

6. The combination of particle removal and detection apparatus in a finished product NMP as claimed in claim 2, wherein: and a plurality of filter element fixing grooves are formed in the shell bottom.

7. The combination of particle removal and detection apparatus in a finished product NMP as claimed in claim 2, wherein: the filter core is including the ring shape skeleton that has a plurality of through-holes, the periphery cover of ring shape skeleton is equipped with the micropore filtration rete.

8. The combination of particle removal and detection apparatus in a finished product NMP as claimed in claim 7, wherein: the filtering holes of the first-stage filter are 0.5 micron, the filtering holes of the second-stage filter are 0.2 micron, and the filtering holes of the third-stage filter are 0.1 micron.

9. The combination of particle removal and detection apparatus in a finished product NMP as claimed in claim 1, wherein: the filtering pipeline is connected with the bottom of the finished product tank, and the backflow circulating pipeline is connected with the top of the finished product tank.

10. The combination of particle removal and detection apparatus in a finished product NMP as claimed in claim 1, wherein: and the filtering pipeline is respectively connected with the lower ends of the cylinders of the primary filter, the secondary filter and the tertiary filter.