CN112635906B - Film liquid scraping system - Google Patents
Film liquid scraping system Download PDFInfo
- Publication number
- CN112635906B CN112635906B CN201910891038.5A CN201910891038A CN112635906B CN 112635906 B CN112635906 B CN 112635906B CN 201910891038 A CN201910891038 A CN 201910891038A CN 112635906 B CN112635906 B CN 112635906B
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- CN
- China
- Prior art keywords
- film
- liquid
- annular sheet
- annular
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 62
- 238000007790 scraping Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000010408 film Substances 0.000 abstract description 38
- 239000002245 particle Substances 0.000 abstract description 6
- 239000007787 solid Substances 0.000 abstract description 2
- 239000010409 thin film Substances 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 18
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000001154 acute effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention relates to a film liquid scraping system, in particular to an annular thin film liquid scraping system. The film liquid scraping system comprises an upper driving roller and a lower driving roller for conveying films and also comprises two sheets which are arranged between the upper driving roller and the lower driving roller and are used for scraping liquid on two sides of the films. The film liquid scraping system adopts the annular thin sheet to scrape liquid, avoids the scraped liquid from being brought back to the film surface by the liquid scraping roller, has high liquid scraping efficiency, can remove some solid particles, and improves the appearance and quality of the diaphragm.
Description
Technical Field
The invention relates to a film liquid scraping system, in particular to an annular thin film liquid scraping system.
Background
In the process of producing the wet lithium battery diaphragm, extraction is a very critical and necessary process link, and the white oil in the diaphragm is extracted by using dichloromethane extraction liquid, so that the diaphragm forms micropores which penetrate front and back.
When the diaphragm extraction is completed and the diaphragm comes out of the extraction liquid and enters the subsequent equipment, a large amount of extraction liquid is attached to the surface of the diaphragm, so that the appearance and the quality of the diaphragm of the lithium battery are required to be improved, and the waste of the extraction liquid is reduced. The prior art mainly uses a liquid scraping roller to scrape liquid, and the optimal liquid scraping effect is obtained by adjusting the relative position of the liquid scraping roller and the tension of the film.
However, the liquid scraping roller presses the film surface to reduce the liquid extraction amount of the film surface, and the liquid scraping roller has the defects that the liquid scraping roller can adhere to the liquid extraction, and the scraped liquid extraction can be carried onto the diaphragm again by the rotating liquid scraping roller; on the other hand, the diameter of the scraping roller is larger, when the film surface is rotationally extruded, only part of the extracting agent is extruded, and a large amount of extracting agent is conveyed to the next scraping roller along with the diaphragm along with the rotation of the scraping roller.
In the prior art, the problems are partially improved, whether the position of the scraping roller is adjusted, the tension of the diaphragm is increased, or the extractant adhered in the rotation process of the scraping roller is removed at any time, one of the problems is solved, the problem cannot be fundamentally solved, and the scraping effect is not ideal.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a film liquid scraping system, which adopts an annular sheet to scrape liquid, avoids the scraped liquid from being brought back to a film surface by a liquid scraping roller, has high liquid scraping efficiency, can remove some solid particles, and improves the appearance and quality of a diaphragm.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the film liquid scraping system comprises an upper driving roller and a lower driving roller for conveying films, and further comprises two sheets which are arranged between the upper driving roller and the lower driving roller and are used for scraping liquid on two sides of the films. The upper driving roller is arranged above the liquid level, and the lower driving roller is arranged below the liquid level. The two sheets scrape the liquid from the film from both sides of the film, respectively. For the subsequent process of lithium battery diaphragm extraction, the film is the lithium battery diaphragm, the liquid level refers to the extraction liquid level in the extraction tank, and the liquid is the extraction liquid.
Further, the two sheets are connected together and are integrated annular sheets, and the film passes through the middle of the annular sheets. When the annular sheet is inclined, both width surfaces of the annular sheet are scraped from both surfaces of the film.
Preferably, the endless sheet is an endless steel belt. The endless thin sheets described below may be the endless steel belt.
More preferably, the annular sheet thickness is no more than 0.5mm.
Further preferably, the edge of the annular sheet contacting the film is arcuate. The edge of the annular sheet is very thin, liquid on the flat film surface can be easily scraped completely when the film surface is attached, and the edge is arc-shaped and smoothly transits without an acute angle, so that the film cannot be damaged when the liquid is scraped.
At the same time, liquid scraped off the membrane surface will flow directly from the annular sheet into the liquid bath and will not be brought back onto the annular sheet again.
Further, a tensioning wheel for tensioning the annular sheet is arranged at one side end of the annular sheet. The tension of the annular sheet is adjusted to an ideal state by adjusting the tension wheel, so that the straightness of the edge of the annular sheet and the rigidity of the annular sheet in the liquid scraping process are ensured.
The other side end of the annular sheet is provided with a driving belt wheel for circularly conveying the annular sheet.
The two side ends of the annular sheet are provided with rotating mechanisms for adjusting the overturning angle of the annular sheet, and the rotating mechanisms are sleeved on the driving belt wheel and the tensioning wheel. The rotating mechanism adjusts the edge of the annular sheet to contact and separate from the film through overturning, and adjusts the contact pressure with the film.
Further, the rotating mechanism comprises a driving end rotating seat and a driven end rotating seat which are respectively sleeved on the driving belt pulley and the tensioning wheel.
The rotating mechanism at least one side end of the annular sheet is provided with a cleaning sheet for cleaning residual stains on the annular sheet. The annular sheet is scraped from the film, not only the dichloromethane extractant, but also some dust particles adhered to the surface of the film, and residual stains formed by the dichloromethane extractant and the dust particles are accumulated on the edge of the scraper for a long time, so that the surface of the film is scratched. And the driving belt wheel and the tensioning wheel are matched to enable the annular sheet to be circularly conveyed and move relative to the cleaning sheet, so that the residual stains are scraped.
The rotating mechanisms at the two side ends are respectively connected with fixed connecting seats, and the fixed connecting seats at the two side ends are respectively arranged on the two opposite side plates in the liquid tank, namely on the two opposite side plates in the extraction tank.
Compared with the prior art, the invention has the following advantages:
(1) The annular sheet liquid scraping device has the advantages that the phenomenon that the scraped liquid is brought back to the film surface again by the liquid scraping roller in the prior art is avoided, the sheet liquid scraping efficiency is higher, and meanwhile, the film surface cannot be damaged due to the arc design of the edge of the sheet.
(2) The annular sheet can be turned over to achieve the overturning angle and the tensioning, so that the contact pressure between the annular sheet and the film can be adjusted on one hand, and the straightness and the rigidity of the sheet are ensured on the other hand; meanwhile, the cyclic transmission of the annular sheet and the design of the cleaning sheet can effectively remove the residual stain on the sheet.
Drawings
FIG. 1 is a schematic side view of a part of an endless sheet wiping system in example 1 of the invention;
FIG. 2 is a schematic partial perspective view of an annular sheet wiping system according to example 1 of the present invention;
fig. 3 is an overall schematic view of the annular sheet wiping system of example 1 of the present invention.
Reference numerals illustrate: 1-extraction tank, 2-lower driving roller, 3-diaphragm, 4-annular steel belt, 5-upper driving roller, 6-fixed connection seat, 7-passive end rotating seat, 8-tensioning wheel, 9-driving end rotating seat, 10-driving belt wheel and 11-cleaning sheet.
Detailed Description
The technical solutions of the present invention will be described in further detail below by way of examples with reference to the accompanying drawings, but they should not be construed as limiting the scope of the present invention.
Example 1
The film in the embodiment is a lithium battery diaphragm, as shown in fig. 1 and 2, and comprises an upper driving roller 5 and a lower driving roller 2 for conveying the diaphragm 3, and also comprises an annular steel belt 4 which is arranged between the upper driving roller 5 and the lower driving roller 2 and is used for scraping the extraction liquid on two sides of the diaphragm 3. The upper driving roller 5 is arranged above the liquid level, and the lower driving roller 2 is arranged below the liquid level. The diaphragm 3 passes through the middle of the annular steel belt 4. When the annular steel belt 4 is inclined, both width surfaces of the annular steel belt 4 are scraped from both surfaces of the diaphragm 3, respectively.
In a preferred embodiment, the annular steel strip 4 has a thickness of not more than 0.5mm.
In a further preferred embodiment, the edge of the annular steel band 4 in contact with the membrane 3 is curved. The edge of the annular steel belt 4 is very thin, liquid on the flat film surface can be easily scraped completely when the film surface is attached, and the edge is arc-shaped and smoothly transits without an acute angle, so that the diaphragm 3 cannot be damaged when the liquid is scraped.
At the same time, the liquid scraped off the film surface will flow from the annular steel belt 4 directly into the extraction tank and will not be brought back onto the annular steel belt 4 again.
As shown in fig. 3, a tension pulley 8 for tensioning the endless steel belt 4 is provided at one side end of the endless steel belt 4. The tension of the annular steel belt 4 is adjusted to an ideal state by adjusting the tension wheel 8 so as to ensure the straightness of the edge of the annular steel belt 4 and the rigidity of the annular steel belt 4 in the process of scraping liquid.
The other side end of the annular steel belt 4 is provided with a driving belt pulley 10 for circularly conveying the annular steel belt 4.
And rotating mechanisms for adjusting the turnover angle of the annular steel belt 4 are arranged at the two side ends of the annular steel belt 4, and are sleeved on the driving belt pulley 10 and the tensioning wheel 8. The rotating mechanism adjusts the edge of the annular steel belt 4 to contact and separate from the diaphragm 3 through overturning, and adjusts the contact pressure with the diaphragm 3.
The rotating mechanism comprises a driving end rotating seat 9 and a driven end rotating seat 7 which are respectively sleeved on the driving belt pulley 10 and the tensioning wheel 8.
The driving end rotating seat 9 is provided with a cleaning sheet 11 for cleaning the residual stain on the annular steel belt 4. The annular steel belt 4 scrapes not only the methylene dichloride extractant but also some dust particles attached to the surface of the membrane from the membrane 3, and the residual stain formed by the methylene dichloride extractant and the dust particles is accumulated on the edge of the scraper for a long time, so that the surface of the membrane is scratched. The annular steel belt 4 can be circularly conveyed by the cooperation of the driving belt wheel 10 and the tensioning wheel 8, and the annular steel belt and the cleaning sheet 11 move relatively, so that the residual stains are scraped.
The driving end rotating seat 9 and the driven end rotating seat 7 are respectively connected with a fixed connecting seat 6, and the fixed connecting seats 6 at the two side ends are respectively arranged on two opposite side plates in the extraction tank.
While particular embodiments of the present invention have been illustrated and described, it will be appreciated that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (5)
1. The film liquid scraping system comprises an upper driving roller and a lower driving roller for conveying a film, and is characterized by further comprising two sheets which are arranged between the upper driving roller and the lower driving roller and are used for scraping liquid on two sides of the film;
the two sheets are connected together and are integrated annular sheets;
One side end of the annular sheet is provided with a tensioning wheel for tensioning the annular sheet;
A driving belt wheel for circularly conveying the annular sheet is arranged at the other side end of the annular sheet;
The two side ends of the annular sheet are provided with rotating mechanisms for adjusting the overturning angle of the annular sheet, and the rotating mechanisms are sleeved on the driving belt pulley and the tensioning wheel;
the rotating mechanism at least one side end of the annular sheet is provided with a cleaning sheet for cleaning residual stains on the annular sheet.
2. The film wiping system of claim 1, wherein the endless sheet is an endless steel belt.
3. The film wiping system of claim 1, wherein the annular sheet has a thickness of no more than 0.5mm.
4. A film wiping system as defined in any one of claims 1-3, characterized in that the edge of the annular sheet in contact with the film is curved.
5. The film wiping system as defined in claim 1, wherein the rotary mechanisms at the two side ends are respectively connected with fixed connecting seats, and the fixed connecting seats at the two side ends are respectively arranged on two opposite side plates in the liquid tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910891038.5A CN112635906B (en) | 2019-09-20 | 2019-09-20 | Film liquid scraping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910891038.5A CN112635906B (en) | 2019-09-20 | 2019-09-20 | Film liquid scraping system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112635906A CN112635906A (en) | 2021-04-09 |
| CN112635906B true CN112635906B (en) | 2024-04-30 |
Family
ID=75282565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910891038.5A Active CN112635906B (en) | 2019-09-20 | 2019-09-20 | Film liquid scraping system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112635906B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204470167U (en) * | 2014-12-31 | 2015-07-15 | 广州敏瑞汽车零部件有限公司 | A kind of roll extrusion charging oil-scraping device |
| CN208189690U (en) * | 2018-06-01 | 2018-12-04 | 河北金力新能源科技股份有限公司 | A kind of lithium battery diaphragm oil system's coating extracts liquid removing device |
| CN210692650U (en) * | 2019-09-20 | 2020-06-05 | 青岛中科华联新材料股份有限公司 | Film liquid scraping system |
-
2019
- 2019-09-20 CN CN201910891038.5A patent/CN112635906B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204470167U (en) * | 2014-12-31 | 2015-07-15 | 广州敏瑞汽车零部件有限公司 | A kind of roll extrusion charging oil-scraping device |
| CN208189690U (en) * | 2018-06-01 | 2018-12-04 | 河北金力新能源科技股份有限公司 | A kind of lithium battery diaphragm oil system's coating extracts liquid removing device |
| CN210692650U (en) * | 2019-09-20 | 2020-06-05 | 青岛中科华联新材料股份有限公司 | Film liquid scraping system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112635906A (en) | 2021-04-09 |
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