CN211885580U - Extract impurity cleaning device - Google Patents
Extract impurity cleaning device Download PDFInfo
- Publication number
- CN211885580U CN211885580U CN201922411089.1U CN201922411089U CN211885580U CN 211885580 U CN211885580 U CN 211885580U CN 201922411089 U CN201922411089 U CN 201922411089U CN 211885580 U CN211885580 U CN 211885580U
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- Prior art keywords
- filter
- tank
- pump
- connecting pipeline
- cleaning device
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- 239000012535 impurity Substances 0.000 title claims abstract description 34
- 238000004140 cleaning Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 7
- 238000000605 extraction Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract description 23
- 238000001914 filtration Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 10
- 230000037452 priming Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000004489 tear production Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The patent of the utility model relates to an extract impurity cleaning device, including overflow launder, self priming pump, manometer, filter-tank, temperature sensor, heater, baffle, filter sieve, sealed lid, centrifugal fan, gas recovery jar, water tank, high pressure water pump, shower nozzle, mixed fluid reservoir, canned pump, blowoff valve, connecting line constitutes. The extract passes through during self priming pump gets into the filter tank, and the filter sieve filters the extract, and the extract after the filtration passes through the canned motor pump and gets into in the mixed liquid jar. The filter screen is blocked and the filtering efficiency is reduced, and the self-priming pump and the shield pump are stopped. The heater is started to heat, the volatilized dichloromethane gas is pumped to the gas recovery tank through the centrifugal fan, the high-pressure water pump is started to clean the filter screen through the spray head, and the blow-down valve is opened to discharge impurities out of the filter tank. The utility model discloses can realize that impurity clearance is efficient, the filter sieve can be used for a long time and need not frequent change, realizes the pollution-free emission among the impurity clearance process, practices thrift the cost.
Description
Technical Field
The utility model belongs to the technical field of wet process lithium cell diaphragm production, specifically speaking: relates to an extraction liquid impurity cleaning device in an extraction liquid recovery system in wet lithium battery diaphragm production.
Background
The lithium ion battery has more advantages in energy density, cycle life, safety and environmental protection than the traditional lead-acid and nickel-cadmium batteries. Therefore, the method is widely applied to the fields of new energy automobiles, energy storage, digital electronic products and the like. The lithium ion battery material structure mainly comprises a positive electrode material, a negative electrode material, electrolyte and a diaphragm. The lithium battery diaphragm is one of key materials and mainly used for separating the anode and the cathode of the lithium battery, preventing the anode and the cathode from contacting and short-circuiting and allowing ions in electrolyte to pass through. The performance of the separator determines the interfacial structure, internal resistance, etc. of the battery. Directly affects the capacity, cycle number and safety performance of the battery. The diaphragm with excellent performance plays an important role in improving the comprehensive performance of the battery.
The wet-process lithium battery diaphragm production process mainly comprises the steps of feeding, extruding, sheet casting, double-drawing, extracting, transverse-drawing, rolling and inspecting. After the cast sheet is subjected to synchronous biaxial stretching, the molecular chain is stretched in the longitudinal direction and the transverse direction to different degrees, and white oil serving as a pore-forming agent is uniformly distributed in the molecular chain. The dichloromethane is used as an extracting agent to extract the white oil, so that the white oil in the diaphragm is separated, and the diaphragm forms a compact and uniform microporous structure. In the extraction process, the equipment in the extraction tank mainly comprises a traction roller and a bearing. In the extraction transmission process, because dichloromethane corrosivity is great, ceramic bearing is selected for use to general traction roller bearing material, and ceramic bearing can prevent the corruption of extraction liquid, but long-term use can wear and tear production piece. In the gas-liquid recovery system of the extraction liquid, a circulation pipeline and related equipment can be corroded and rusted, and metal impurities can be generated in the extraction liquid. The existence of impurities in the extraction liquid can reduce the performance of the product, because the extraction liquid contains ceramic impurities and metal impurities, the impurities are cleaned mainly by adding a filter in a recovery system at present, and the filtering mode mainly adopts a bag filter to carry out multi-stage filtration. At present, the traditional filtering mode has low filtering efficiency and short filter element service cycle, and the filter element replacement cycle is 2 to 3 days. In the impurity cleaning process, methylene dichloride liquid exists in the impurities, and the impurities are discharged into the atmosphere to pollute the air.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an extract impurity cleaning device in wet process lithium cell diaphragm production process. Can realize that cleaning efficiency is high, filter core life cycle is long, and dichloromethane pollution-free discharges in the impurity clearance process, practices thrift the cost.
The utility model provides a technical problem can adopt following technical scheme to realize:
the utility model provides an extract impurity cleaning device, includes overflow launder, self priming pump, manometer, filter-tank, temperature sensor, heater, baffle, filter sieve, sealed lid, centrifugal fan, gaseous recovery jar, high pressure water pump, shower nozzle, water tank, canned motor pump, mixed fluid reservoir, blowoff valve, connecting line constitute.
The overflow groove is sequentially connected with a self-priming pump and a pressure gauge through a connecting pipeline; the pressure gauge is connected with the left side of the filter tank; the top of the filter tank is provided with a sealing cover; the sealing cover is sequentially connected with the spray head, the high-pressure water pump and the water tank through connecting pipelines; the upper part of the filter tank is sequentially provided with a centrifugal fan and a gas recovery tank through a connecting pipeline; a filter sieve is arranged in the middle inside the filter tank; the right side of the filter tank is sequentially connected with the shielding pump and the mixed liquid tank through a connecting pipeline; a drain valve is arranged below the filter tank; the bottom of the filter tank is sequentially provided with a partition plate, a heater and a temperature sensor;
the overflow groove is connected with the filter tank through a connecting pipeline and is positioned 2-6cm below the filter screen;
the mixed liquid tank is connected with the filter tank through a connecting pipeline and is positioned 4-8cm above the filter sieve;
the diameter of the sieve pores of the filter sieve is 5-10 μm, and the material is polytetrafluoroethylene;
the drain valve is connected with the filter tank through a connecting pipeline and is located 2-5 cm above the partition plate;
the heating mode of the heater is steam heating, and the heating temperature is 50-70 ℃;
the utility model has the advantages of high filtration efficiency of the impurities in the extraction liquid and long service life of the screen. Meanwhile, no pollution is discharged in the impurity cleaning process, the recovery of dichloromethane gas is increased, and the cost is reduced.
Drawings
FIG. 1 is the utility model relates to an extract impurity clearance is put and is constituteed the schematic diagram in wet process lithium cell diaphragm production technology.
Reference numbers in the figures: 1-overflow trough 2-centrifugal fan 3-gas recovery tank 4-sealing cover 5-spray head 6-high pressure water pump 7-water tank 8-mixed liquid tank 9-canned pump 10-blow-off valve 11-partition plate 12-heater 13-filter sieve 14-temperature sensor 15-pressure gauge 16-filter trough 17-self-priming pump 18-connecting pipeline
Detailed Description
Referring now to FIG. 1, the present invention will be further described
As shown in fig. 1, be the utility model relates to an extract impurity clearance puts embodiment schematic structure diagram in wet process lithium battery diaphragm production technology, extract impurity clearance puts in this example a wet process lithium battery diaphragm production technology, including overflow launder 1, centrifugal fan 2, gas recovery jar 3, sealed lid 4, shower nozzle 5, high pressure water pump 6, water tank 7, mixed fluid reservoir 8, canned motor pump 9, blowoff valve 10, baffle 11, heater 12, filter sieve 13, temperature sensor 14, manometer 15, filter tank 16, self priming pump 17, connecting line 18.
The overflow tank 1 is connected to the left side of the filter tank 16, and is provided with a self-priming pump 17 and a pressure gauge 15 in the middle. The top of the filter tank 16 is provided with a sealing cover 4, and the sealing cover 4 is sequentially connected with a spray head 5, a high-pressure water pump 6 and a water tank 7 through a connecting pipeline 18. The gas recovery tank 3 is connected to the upper part of the filtering tank 16, and is provided with a centrifugal fan in the middle. The filtering groove 16 is provided with a filtering screen 13 in the middle. The mixed liquid tank 8 is connected to the right side of the filter tank 16, and the shield pump 9 is arranged in the middle. A drain valve 10 is arranged below the filter tank 16, and a partition plate 11, a heater 12 and a temperature sensor 14 are arranged at the bottom.
The overflow trough 1 is connected with a filter trough 16 through a connecting pipeline 18 and is positioned 2-6cm below the filter sieve 13;
the mixed liquid tank 8 is connected with the filter tank 16 through a connecting pipeline 18 and is positioned 4-8cm above the filter sieve 13;
the diameter of the sieve pores of the filter sieve 13 is 5-10 μm, and the material is polytetrafluoroethylene;
the blowdown valve 10 is connected with the filter tank 16 through a connecting pipeline 18 and is located 2-5 cm above the partition plate 11;
the heating mode of the heater 2 is steam heating, and the heating temperature is 50-70 ℃;
the working principle and the working process of the embodiment are as follows:
(1) starting a self-priming pump 17 to pump the extraction liquid containing impurities in the overflow tank 1 into a filter tank 16;
(2) along with the rise of the liquid level of the extraction liquid in the filter tank 16, when the liquid level exceeds the filter sieve 13, the filter sieve 13 filters impurities of the extraction liquid, the extraction liquid below the filter sieve 13 continuously flows under the action of the self-sucking pump 17, so that sieve pores can be prevented from being blocked, and high-efficiency filtration is realized;
(3) pumping the filtered extraction liquid into a mixed liquid tank 8 through a shield pump 9;
(4) when the pressure gauge 15 indicates too high, it indicates that there are more impurities in the filter tank 16 and the filter sieve 13 is blocked, resulting in lower filtering efficiency. Self-priming pump 17 and canned motor pump 9 are stopped. Starting a heater 12, introducing steam into the heater 12 to heat the bottom of the extraction liquid through a partition plate 11, wherein the heating temperature is 70 ℃;
(5) starting the centrifugal fan 2, and pumping the dichloromethane gas volatilized from the filter tank 16 into the gas recovery tank 3 for gas recovery;
(6) after dichloromethane in the filter tank 16 is completely extracted, the high-pressure pump 6 is started, pure water washes the filter sieve 13 through the spray nozzle 5, impurities in the sieve pores are washed, the blow-down valve 10 is opened while washing is carried out, and the impurities are discharged out of the filter tank 16;
the above embodiments are only specific examples for further details of the technical solution of the present invention, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement and the like made within the scope of the present disclosure are included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an extract impurity cleaning device which characterized in that: the device comprises an overflow groove (1), a centrifugal fan (2), a gas recovery tank (3), a sealing cover (4), a spray head (5), a high-pressure water pump (6), a water tank (7), a mixed liquid tank (8), a shielding pump (9), a blow-down valve (10), a partition plate (11), a heater (12), a filter screen (13), a temperature sensor (14), a pressure gauge (15), a filter tank (16), a self-sucking pump (17) and a connecting pipeline (18); the overflow groove (1) is sequentially connected with a self-priming pump (17) and a pressure gauge (15) through a connecting pipeline (18); the pressure gauge (15) is connected with the left side of the filter tank (16); the top of the filter tank (16) is provided with a sealing cover (4); the sealing cover (4) is sequentially connected with the spray head (5), the high-pressure water pump (6) and the water tank (7) through a connecting pipeline (18); a centrifugal fan (2) and a gas recovery tank (3) are sequentially arranged above the filter tank (16) through a connecting pipeline (18); a filter sieve (13) is arranged in the middle inside the filter tank (16); the right side of the filter tank (16) is sequentially connected with the shield pump (9) and the mixed liquid tank (8) through a connecting pipeline (18); a blowdown valve (10) is arranged below the filter tank (16); the bottom of the filter tank (16) is sequentially provided with a partition plate (11), a heater (12) and a temperature sensor (14).
2. An extraction liquid impurity cleaning device according to claim 1, characterized in that: the overflow trough (1) is connected with the filter trough (16) through a connecting pipeline (18) and is positioned 2-6cm below the filter sieve (13).
3. An extraction liquid impurity cleaning device according to claim 1, characterized in that: the mixed liquid tank (8) is connected with the filter tank (16) through a connecting pipeline (18) and is positioned 4-8cm above the filter screen (13).
4. An extraction liquid impurity cleaning device according to claim 1, characterized in that: the diameter of the sieve pore of the filter sieve (13) is 5-10 μm, and the material is polytetrafluoroethylene.
5. An extraction liquid impurity cleaning device according to claim 1, characterized in that: the drain valve (10) is connected with the filter tank (16) through a connecting pipeline (18) and is located 2-5 cm above the partition plate (11).
6. An extraction liquid impurity cleaning device according to claim 1, characterized in that: the heating mode of the heater (12) is steam heating, and the heating temperature is 50-70 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922411089.1U CN211885580U (en) | 2019-12-28 | 2019-12-28 | Extract impurity cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922411089.1U CN211885580U (en) | 2019-12-28 | 2019-12-28 | Extract impurity cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211885580U true CN211885580U (en) | 2020-11-10 |
Family
ID=73295541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922411089.1U Active CN211885580U (en) | 2019-12-28 | 2019-12-28 | Extract impurity cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211885580U (en) |
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2019
- 2019-12-28 CN CN201922411089.1U patent/CN211885580U/en active Active
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