CN115921554A - Foil rolling oil removing device and rolling oil removing method - Google Patents
Foil rolling oil removing device and rolling oil removing method Download PDFInfo
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- CN115921554A CN115921554A CN202211555590.5A CN202211555590A CN115921554A CN 115921554 A CN115921554 A CN 115921554A CN 202211555590 A CN202211555590 A CN 202211555590A CN 115921554 A CN115921554 A CN 115921554A
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Abstract
The application relates to a foil rolling oil removal device and a rolling oil removal method, wherein the foil rolling oil removal device comprises a foil rolling device, an extraction tank and a dryer which are sequentially arranged along the movement direction of a foil, the extraction tank is used for injecting an extraction agent, a liquid seal structure is arranged at an opening of the extraction tank, the foil rolling device is used for rolling the foil, and the dryer is used for drying the foil; the foil rolling oil removing device also comprises a foil conveyer, and the foil conveyer is used for conveying the foil from the foil rolling device, the extraction tank to the dryer. This application adopts the mode of extraction to degrease the foil to seal the extraction tank through the liquid seal structure, reduce that the extractant volatilizes and reduce the comdenstion water and condense influence foil surface properties.
Description
Technical Field
The application relates to the technical field of foil preparation, in particular to a foil rolling oil removal device and a foil rolling oil removal method.
Background
In the manufacture process of traditional aluminium foil material, there are the rolling attenuate step of multichannel, and rolling oil is added to the essential needs in rolling process, and rolling oil's main effect is lubricated, cooling, washing and prevents the oxidation, but after rolling oil's the use, the foil material has following problem: 1. rolling oil is remained on the surface of the produced foil, so that the surface polarity is reduced and the dyne value is not uniform; 2. poor missing coating and poor peeling caused by foil coating, the problems of missing coating, weakened peeling force and the like caused by the residue of rolling oil on the surface are solved by mainly coating conductive materials such as active materials on a battery foil by a coating technology at present; 3. the surface wetting tension of the foil is directly related to the surface oil quantity of the foil, the surface tension of the completely deoiled aluminum foil is above 72 dynes, the surface tension of the roughly rolled aluminum foil is about 31 dynes, the surface tension of the finely rolled aluminum foil is about 32 dynes, and if the oil is not completely removed, the foil product has the defects of oil adhesion, bubbling, line rising, oil spots and the like; the above problems seriously affect the subsequent coating use of the battery foil.
The main oil removing method in the traditional technology is high-temperature steam blowing, after the high-temperature steam blowing, the surface residual oil rate is 4%, the rolling oil content is high, the subsequent use is still influenced, and the problems of incomplete oil removing, low efficiency and the like exist. Therefore, how to provide an efficient foil rolling oil removal device becomes a technical problem which needs to be solved urgently at present.
Disclosure of Invention
Based on this, it is necessary to provide a foil rolling deoiling device, adopt the mode of extraction to degrease the foil to seal the extraction tank through liquid seal structure, reduce extractant and volatilize and reduce the comdenstion water and condense influence foil surface properties.
The specific scheme for solving the technical problems is as follows:
in a first aspect, the application provides a foil rolling oil removal device, which comprises a foil rolling device, an extraction tank and a dryer, wherein the foil rolling device, the extraction tank and the dryer are sequentially arranged along the movement direction of a foil; the foil rolling oil removal device further comprises a foil conveyor, and the foil conveyor is used for conveying foil from the foil rolling device, the extraction tank to the dryer.
As a preferred technical scheme of this application, be provided with a plurality of overflow plates in the extraction tank, the height of overflow plate risees in proper order along the direction of motion of foil, the overflow plate separation extraction tank forms a plurality of extraction chambeies.
Optionally, be located the foil input one side of extraction tank, the extraction tank is provided with the extractant export, is located the foil output one side of extraction tank, the extraction tank is provided with the extractant import, the extractant gets into each extraction chamber that flows through in proper order by the extractant import to discharge by the extractant export.
As a preferred technical scheme of the application, at least one circulation cooler is arranged in the extraction tank.
Optionally, a circulation cooler is disposed in each extraction cavity, and the circulation cooler is used for adjusting the temperature of the extractant in the extraction cavity.
Optionally, each extraction cavity is independently provided with a liquid discharge port, and the liquid discharge ports are all arranged at the bottom of the extraction tank.
As a preferred technical scheme of this application, the liquid seal structure is located including the lid the closing plate of extraction tank opening part, the closing plate is provided with at least one gas vent, gas vent department all is provided with the encircleing the reservoir and the sealing cap of gas vent, the edge of sealing cap immerses below the liquid level of reservoir.
As a preferred technical scheme of the application, a positive pressure gas source is connected above the liquid level in the extraction tank and used for maintaining the gas pressure in the extraction tank to be greater than the ambient gas pressure.
As a preferred technical scheme of this application, the drying apparatus includes the casing and set up in a plurality of tuyeres in the casing, the tuyeres set gradually along the direction of motion of foil.
As a preferred technical scheme of this application, foil material conveyer includes unwinding mechanism, winding mechanism, tension mechanism and a plurality of transmission roller.
The unwinding mechanism is arranged on the feeding side of the foil rolling device, and the winding mechanism is arranged on the discharging side of the dryer.
As a preferred solution of the present application, the tension mechanism comprises at least one tension roller for providing tension to the foil.
The tension roller comprises a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the unreeling mechanism and the foil roller, the second tension roller is arranged between the foil roller and the extraction tank, and the third tension roller is arranged between the extraction tank and the dryer.
In a second aspect, the present application provides a rolling degreasing method for foil, where the rolling degreasing method employs a foil rolling degreasing device according to the first aspect, and the rolling degreasing method includes the following steps:
after the foil is rolled, the foil is sequentially extracted and dried, and rolling oil on the surface of the foil is removed.
As a preferred technical scheme of the application, countercurrent contact extraction is adopted in the extraction process, and the movement direction of the foil is opposite to the flowing direction of the extracting agent.
Optionally, the extractant is cooled during the extraction process.
Optionally, the temperature of the drying treatment is 60 to 100 ℃, for example, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃ or 100 ℃.
Optionally, a protective atmosphere is used in the extraction process.
Optionally, the pressure of the protective atmosphere is greater than the ambient gas pressure.
Optionally, the gas of the protective atmosphere comprises nitrogen.
Optionally, the extractant in the extraction process comprises dichloromethane.
The application has the following beneficial effects:
this application extracts and drying process to the foil after rolling, realize getting rid of foil surface rolling oil in succession, high-efficiently, the foil rises through rolling back temperature, get into behind the extraction tank with the extractant contact, effectively get rid of surface rolling oil, adopt the liquid seal structure to reduce volatilizing of extractant moreover, and reduce the production of comdenstion water, avoid the comdenstion water drippage to foil surface, influence foil surface property, the oiliness rate can drop to below 0.1%.
Drawings
Fig. 1 is a schematic structural diagram of a foil rolling degreasing device according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an extraction tank provided in an embodiment of the present application.
Fig. 3 is a schematic view of a liquid seal structure provided in an embodiment of the present application.
Wherein, 1-foil rolling device; 2-an extraction tank; 3-a dryer; 4-liquid seal structure; 5-an overflow plate; 6-blast nozzle; 7, an unwinding mechanism; 8, a winding mechanism; 9-a transfer roller; 10-a first tension roll; 11-a second tension roller; 12-a third tension roller; 13-a circulation cooler; 14-an extractant outlet; 15-an exhaust port; 16-a liquid storage tank; 17-sealing cap.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
In a specific embodiment, the embodiment of the present application provides a foil rolling oil removal device, as shown in fig. 1, including a foil rolling device 1, an extraction tank 2, and a drying device 3, which are sequentially arranged along a foil movement direction, where the extraction tank 2 is used to inject an extraction agent, an opening of the extraction tank 2 is provided with a liquid seal structure 4, the foil rolling device 1 is used to roll a foil, and the drying device 3 is used to dry the foil; the foil rolling oil removing device further comprises a foil conveyer, and the foil conveyer is used for conveying foil from the foil rolling device, the extraction tank to the dryer.
Adopt extraction tank 2 and drying apparatus 3 to carry out extraction processing and drying process to the foil after rolling respectively in this application, the extraction in-process foil soaks in the extractant and extracts and get rid of surface rolling oil, the foil gets into drying apparatus 3 after the extraction, volatilizes the remaining extractant in surface and gets rid of to effectively guarantee the cleanliness factor on foil surface, make the surface residual oil rate of foil fall to below 0.1%, realize in succession, high-efficiently get rid of foil surface rolling oil.
Optionally, the foil moves in a snake-shaped reciprocating manner in the extraction tank 2, so that the contact time of the foil and the extracting agent is prolonged, and the rolling oil on the surface of the foil is effectively removed.
Alternatively, the foil rolling mill 1 comprises a working roll, a supporting roll and a plurality of oil spray nozzles, wherein the supporting roll is fixedly arranged, the working roll is movably arranged, the thickness of the rolled foil is controlled through the distance between the supporting roll and the working roll, the oil spray nozzles are used for spraying rolling oil on the foil entering the space between the working roll and the supporting roll, and the foil after spraying the rolling oil enters the rolling area between the working roll and the supporting roll to be rolled. In the application, the foil rolling mill is added with rolling oil during rolling to lubricate and cool the foil, and the thickness of the foil after rolling is 13-15 μm, such as 13.0 μm, 13.2 μm, 13.4 μm, 13.6 μm, 13.8 μm, 14.0 μm, 14.2 μm, 14.4 μm, 14.6 μm, 14.8 μm or 15.0 μm.
In one embodiment of the present application, as shown in fig. 1 and 2, a plurality of overflow plates 5 are disposed in the extraction tank, the height of the overflow plates 5 increases in sequence along the moving direction of the foil, and the overflow plates 5 divide the extraction tank 2 to form a plurality of extraction chambers. Set up a plurality of overflow plates 5 in extraction tank 2 in this application to through the difference of 5 height of overflow plate, make the overflow direction of extractant opposite with the direction of motion of foil, realize the multistage countercurrent extraction of foil, improve the contact effect of foil surface and extractant.
Optionally, be located the foil input one side of extraction tank 2, extraction tank 2 is provided with extractant export 14, is located the foil output one side of extraction tank 2, extraction tank 2 is provided with the extractant import, the extractant gets into each extraction chamber of flowing through in proper order by the extractant import to discharge by extractant export 14. Through adding the extractant in this application, maintain each extraction intracavity extractant concentration to provide overflow mobile power, the rolling oil floats on the surface of extractant liquid level after the extraction, thereby can discharge the liquid layer that the surface contains rolling oil through the mode of overflow, effectively guarantee the extraction effect of extraction tank. Further, still can add concentration detector in extraction tank 2 in this application, detect rolling oil concentration or extractant concentration in the extraction tank to according to concentration detection in the extraction tank, the inlet liquid speed of regulation and control extractant guarantees in real time that the extractant concentration in the extraction tank is stable.
Optionally, the mixture of the rolling oil and the extracting agent discharged from the extracting agent outlet 14 is connected to a separation device, for example, the separation device may be a fractionator, and the rolling oil and the extracting agent are separated by fractionation, so as to realize recycling of the rolling oil and the extracting agent.
In an embodiment of this application, each be provided with at least one circulative cooling ware 1 in the extraction tank 2, optionally, each the extraction intracavity all is provided with circulative cooling ware 13, circulative cooling ware 13 is used for adjusting the extractant temperature in the extraction intracavity, specifically, circulative cooling ware 13 includes the circulating line with extraction chamber cyclic connection, last circulating pump and the cooler of being provided with of circulation management, the extractant circulating flow of circulating pump drive extraction intracavity realizes that the inner loop of extractant flows, guarantees the extractant homogeneity in the extraction intracavity, and furtherly, the extractant contacts the cooling with the cooler at the circulating flow in-process, reduces the extractant temperature, reduces extractant evaporation and vapor evaporation to reduce vapor condensation. Alternatively, the cooler may be a heat pipe heat exchanger.
Optionally, the extraction cavity is provided with a liquid outlet independently, the liquid outlet is arranged at the bottom of the extraction tank, and optionally, each liquid outlet is converged to a liquid outlet main pipe. This application is through setting up the leakage fluid dram in every extraction intracavity to can realize quick flowing back at the cleaning process.
In one embodiment of the present application, as shown in fig. 3, the liquid sealing structure includes a sealing plate covering the opening of the extraction tank, the sealing plate is provided with at least one exhaust port 15, a liquid storage tank 16 surrounding the exhaust port 15 and a sealing cap 17 are disposed at the exhaust port 15, and an edge of the sealing cap 17 is immersed below the liquid level of the liquid storage tank 16. Specifically, sealed cap 17 adopts the mode of support to fix on the wall of closing plate or reservoir 16, and sealed cap 17 forms U type groove structure after stretching into reservoir 16, and then adds liquid in reservoir 16 after, forms the liquid seal, realizes sealed effect, and isolated sealing by the lateral wall of liquid seal and sealed cap promptly.
In one embodiment of the present application, a positive pressure gas source (not shown) is connected above the liquid level in the extraction tank 2, and the positive pressure gas source is used for maintaining the gas pressure in the extraction tank 2 to be higher than the ambient gas pressure, for example, the positive pressure gas source is nitrogen. Through letting in gas in to extraction tank 2 in this application to make the interior pressure-fired state that forms of extraction tank 2, effectively avoid the ambient gas aqueous vapor to get into extraction tank 2, reduce the vapor condensation, through the mode of pressure-fired moreover, reduced volatilizing of extractant.
In an embodiment of the present application, the dryer 3 includes a housing and a plurality of air nozzles 6 disposed in the housing, and the air nozzles 6 are sequentially disposed along a moving direction of the foil.
In one embodiment of the present application, the foil conveyor includes an unwinding mechanism 7, a winding mechanism 8, a tension mechanism, and a plurality of conveying rollers 9; the unwinding mechanism 7 is arranged on the feeding side of the foil rolling device 1, and the winding mechanism 8 is arranged on the discharging side of the dryer 3. Further, the tension mechanism comprises at least one tension roller for providing foil tension; specifically, the tension rollers include a first tension roller 10, a second tension roller 11, and a third tension roller 12, the first tension roller 10 is disposed between the unwinding mechanism 7 and the foil roller 1, the second tension roller 11 is disposed between the foil roller 1 and the extraction tank 2, the third tension roller 12 is disposed between the extraction tank 2 and the dryer 3, optionally, the unwinding mechanism 7 may employ an air expansion shaft, and the unwinding speed is 10 to 150m/min.
Optionally, the rolling deoiling device of foil still includes tension detector and tension modulator, and tension detector detects the tension detection of each tension roller respectively to adjust the position of tension roller through the tension modulator, improve the tension of foil, avoid the problem of foil crumpling to take place, through setting up three tension roller in this application, form four tension control sections, can realize accurate regulation and control when the foil transmits moreover. Illustratively, the tension detection of the tension roller can be performed by detecting the surface pressure of the tension roller, the tension controller can be formed by a PLC controller and a driver, that is, the driver is connected with the tension roller and used for moving the position of the tension roller, and the PLC controller is respectively and independently electrically connected with the driver and the tension detector, so as to adjust the tension of the foil in real time through automatic control.
In another embodiment, the present application provides a rolling degreasing method for foil, where the rolling degreasing method employs the above-mentioned foil rolling degreasing device, and the rolling degreasing method includes:
after the foil is rolled, the foil is sequentially extracted and dried, and rolling oil on the surface of the foil is removed.
This application is through extracting in proper order and drying after rolling to the foil, gets rid of foil surface rolling oil through the extraction, further utilizes the stoving to get rid of the remaining extractant on foil surface.
In one embodiment of the present application, countercurrent contact extraction is used in the extraction process, and the foil moves in the direction opposite to the flow direction of the extractant. This application is through foil and extractant countercurrent contact to improve the contact effect of foil and extractant, improve rolling oil and get rid of the effect.
In an embodiment of this application, the in-process of extraction carries out cooling treatment to the extractant, and this application reduces because the heat that the foil rolling produced leads to the extraction intensification through handling the extractant cooling, avoids extractant and steam to be heated volatilization, and it is extravagant to reduce the extractant.
In one embodiment of the present application, the temperature of the drying process is 60 to 100 ℃.
In an embodiment of the present application, a protective atmosphere is used in the extraction process, further, the pressure of the protective atmosphere is greater than the pressure of the ambient gas, and the gas of the protective atmosphere includes nitrogen.
In one embodiment of the present application, dichloromethane is included in the extraction process. This application adopts dichloromethane as the extractant, has high solubility to rolling oil, can get rid of the rolling oil in foil surface and the space, and dichloromethane's boiling point is low moreover, easily dries to get rid of to do not influence the surface property of foil, and in addition, dichloromethane and rolling oil can separate through the mode of fractionating, realize the cyclic utilization of rolling oil and dichloromethane.
Illustratively, a rolling degreasing method of the foil is provided, and the rolling degreasing method specifically includes the following steps:
after the foil is rolled, the foil enters an extraction tank and is sequentially subjected to multistage extraction through a plurality of extraction cavities, the flow direction of an extracting agent is opposite to the movement direction of the foil, the extracting agent flows in an overflow mode, the foil enters a dryer after extraction, and the extracting agent remained on the surface of the foil is dried and removed; and (4) recovering the mixed liquid flowing out of the extraction tank.
In the following examples, the rolled thickness of the foil is 13 μm, the rolling oil is CL-1# aluminum foil rolling oil, the length of the foil immersed in the extractant is 20m, the type of the foil is aluminum foil, and the unwinding speed is 50m/min.
Example 1
This embodiment provides a rolling deoiling device of foil, includes that foil that sets gradually along foil direction of motion rolls ware, extraction tank and drying apparatus, the opening part of extraction tank is provided with the liquid seal structure, the extractant of extraction tank is dichloromethane, and the stoving temperature of drying apparatus is 80 ℃.
The liquid seal structure comprises a sealing plate covering the opening of the extraction tank, the sealing plate is provided with two exhaust ports, a liquid storage tank surrounding the exhaust ports and a sealing cap are arranged at the exhaust ports, and the edge of the sealing cap is immersed below the liquid level of the liquid storage tank.
The foil rolling oil removal device further comprises a foil conveyer, the foil conveyer is used for conveying foil, and the foil moves in the extraction tank in a snake-shaped reciprocating mode.
The foil material conveyer comprises an unreeling mechanism, a reeling mechanism, a tension mechanism and a plurality of conveying rollers; the unwinding mechanism is arranged on the feeding side of the foil rolling device, and the winding mechanism is arranged on the discharging side of the dryer. Furthermore, the tension roller comprises a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the unwinding mechanism and the foil roller, the second tension roller is arranged between the foil roller and the extraction tank, and the third tension roller is arranged between the extraction tank and the dryer.
Example 2
This embodiment provides a rolling deoiling device of foil, compares with embodiment 1, and its difference lies in, be provided with three overflow plate in the extraction tank, the direction of motion of foil is followed to the height of overflow plate risees in proper order, the overflow plate is separated the extraction tank forms four extraction chambeies.
And the extraction tank is provided with an extractant inlet, and the extractant enters the extraction cavities through the extractant inlet and flows through the extraction cavities in sequence and is discharged through the extractant outlet.
Example 3
This embodiment provides a rolling deoiling device of foil, compares with embodiment 2, and its difference lies in, the extraction chamber all is provided with circulative cooler, and circulative cooler includes the circulation pipeline with extraction chamber circular connection, last circulating pump and the cooler of being provided with of circulation management, the temperature of cooler is 25 ℃.
Example 4
The embodiment provides a foil rolling deoiling device, compares with embodiment 1, and its difference lies in, the liquid level top in the extraction tank is connected with positive pressure air supply, and positive pressure air supply is nitrogen gas, and the interior gas pressure of extraction tank is greater than ambient gas pressure 200Pa.
Example 5
The embodiment provides a foil rolling deoiling device, includes that the foil that sets gradually along foil direction of motion rolls ware, extraction tank and drying apparatus, the extraction tank pours into there is dichloromethane.
The extraction tank is characterized in that a liquid seal structure is arranged at the opening of the extraction tank, the liquid seal structure comprises a sealing plate which is covered on the opening of the extraction tank, the sealing plate is provided with two exhaust ports, a liquid storage tank and a sealing cap are arranged at the exhaust ports and surround the exhaust ports, and the edge of the sealing cap is immersed below the liquid level of the liquid storage tank.
The extraction tank is provided with three overflow plates, the heights of the overflow plates sequentially rise along the movement direction of foil, the overflow plates are used for separating the extraction tank to form four extraction cavities, the extraction tank is positioned on one side of foil input of the extraction tank and provided with an extractant outlet, the extraction tank is positioned on one side of foil output of the extraction tank and provided with an extractant inlet, an extractant enters each extraction cavity from the extractant inlet and flows through in sequence and is discharged from the extractant outlet, the extraction cavities are provided with circulating coolers, the temperature of each circulating cooler is 25 ℃, the extraction cavities are respectively and independently provided with a liquid discharge port, and the liquid discharge ports are all arranged at the bottom of the extraction tank.
And a positive pressure gas source is connected above the liquid level in the extraction tank and is used for maintaining the gas pressure in the extraction tank to be 200Pa higher than the ambient gas pressure. The drying apparatus comprises a shell and 20 air nozzles arranged in the shell, wherein the air nozzles are sequentially arranged along the movement direction of the foil, and the temperature of the drying apparatus is 80 ℃.
The foil rolling oil removal device further comprises a foil conveyer, and the foil conveyer comprises an unreeling mechanism, a reeling mechanism, a tension mechanism and a plurality of conveying rollers; the unwinding mechanism is arranged on the feeding side of the foil rolling device, and the winding mechanism is arranged on the discharging side of the dryer. Furthermore, the tension roller comprises a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the unwinding mechanism and the foil roller, the second tension roller is arranged between the foil roller and the extraction tank, and the third tension roller is arranged between the extraction tank and the dryer.
Comparative example 1
Compared with the embodiment 1, the comparative example provides a foil rolling oil removal device, and the difference is that an extraction tank and a dryer are replaced by a high-temperature steam purging device, the length of the purging foil is 1m, and the temperature of high-temperature steam is 110 ℃.
The foil materials after deoiling in the above examples and comparative examples were subjected to surface residual oil rate detection, and the test results are shown in table 1, and the detection method includes:
s1, preparing a sample, cutting foil material in unit area by using a cutting knife, weighing and recording the mass as m according to the size of the cut foil material so as to extract the foil material conveniently 0 ；
S2, cleaning and deoiling: spreading the sample cut in the S1, and putting the sample into a beaker filled with dichloromethane;
s3, ultrasonic oscillation: putting the beaker in the step S2 into an ultrasonic cleaning tank, and dissolving the rolling oil into dichloromethane by utilizing ultrasonic vibration;
s4, taking out the sample by using a pair of tweezers, putting the sample into another beaker filled with new dichloromethane, and performing ultrasonic oscillation again to more thoroughly remove the rolling oil;
s5, taking out the sample, placing the sample in a watch glass, and drying the sample in a constant-temperature blower at 60 ℃, wherein the recommended temperature range is 45-100 ℃;
s6, bearing the dried sample, and marking as m 1 ；
S7, a calculation formula of oil content: (m) 0 -m 1 )/m 0 ×100％。
TABLE 1
From the above table, it can be seen that:
(1) Embodiment 1 compares with embodiment 2, can see that, set up a plurality of overflow plates in the extraction tank in this application to through the difference of overflow plate height, make the overflow direction of extractant opposite with the direction of motion of foil, realize the multistage countercurrent extraction of foil, improve the contact effect of foil surface and extractant, and the rolling oil floats on the surface of extractant liquid level after the extraction, thereby can discharge the liquid layer that the surface contains rolling oil through the mode of overflow, effectively guarantee the extraction effect of extraction tank.
(2) Embodiment 2 compares with embodiment 3, can see that, this application realizes the inner loop of extractant and flows through carrying out the circulation flow cooling to the extractant, guarantees the extractant homogeneity in the extraction intracavity, improves the vortex flow of extractant, guarantees the contact disturbance of extractant and foil to improve the extraction effect, and further, the extractant contacts the cooling with the cooler at circulation flow in-process, reduces the extractant temperature, reduces extractant evaporation and vapor evaporation, thereby reduces vapor condensation.
(3) Embodiment 1 compares with embodiment 4, through letting in gas in the extraction tank in this application to make the interior pressure-fired state that forms of extraction tank, effectively avoid ambient gas vapor to get into the extraction tank, reduce the vapor condensation, through the mode of pressure-fired moreover, reduced the volatilization of extractant.
Through above-mentioned embodiment, this application extracts and drying process to the foil after rolling, realizes getting rid of foil surface rolling oil in succession, high-efficiently, and the foil rises through rolling back temperature, contacts with the extractant after getting into the extraction tank, effectively gets rid of surface rolling oil, adopts the liquid seal structure to reduce the volatilization of extractant moreover, and reduces the production of comdenstion water, avoids the comdenstion water to drip to the foil surface, influences foil surface properties, and the oiliness rate can fall to below 0.1%.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the patent is subject to the appended claims, and the description and the drawings can be used for explaining the contents of the claims.
Claims (10)
1. A foil rolling oil removal device is characterized by comprising a foil rolling device, an extraction tank and a dryer which are sequentially arranged along the movement direction of a foil, wherein the extraction tank is used for injecting an extracting agent, a liquid seal structure is arranged at an opening of the extraction tank, the foil rolling device is used for rolling the foil, and the dryer is used for drying the foil;
the foil rolling oil removing device further comprises a foil conveyer, and the foil conveyer is used for conveying foil from the foil rolling device, the extraction tank to the dryer.
2. The foil rolling degreasing device as claimed in claim 1, wherein a plurality of overflow plates are arranged in the extraction tank, the height of the overflow plates is sequentially increased along the movement direction of the foil, and the overflow plates divide the extraction tank to form a plurality of extraction cavities;
optionally, be located the foil input one side of extraction tank, the extraction tank is provided with the extractant export, is located the foil output one side of extraction tank, the extraction tank is provided with the extractant import, the extractant gets into each extraction chamber that flows through in proper order by the extractant import to discharge by the extractant export.
3. The foil rolling degreasing device as recited in claim 2, wherein at least one circulation cooler is disposed in the extraction tank;
optionally, a circulation cooler is disposed in each extraction cavity, and the circulation cooler is used for adjusting the temperature of an extracting agent in the extraction cavity;
optionally, each extraction cavity is independently provided with a liquid discharge port, and the liquid discharge ports are all arranged at the bottom of the extraction tank.
4. The foil rolling degreasing device as claimed in any one of claims 1-3, wherein the liquid sealing structure comprises a sealing plate covering the opening of the extraction tank, the sealing plate is provided with at least one exhaust port, the exhaust port is provided with a liquid storage tank surrounding the exhaust port and a sealing cap, and the edge of the sealing cap is immersed below the liquid level of the liquid storage tank.
5. The foil rolling degreasing device as claimed in any one of claims 1-4, wherein a positive pressure gas source is connected above the liquid level in the extraction tank, and the positive pressure gas source is used for maintaining the gas pressure in the extraction tank to be higher than the ambient gas pressure.
6. The foil rolling degreasing device as defined in any one of claims 1-5, wherein the dryer comprises a housing and a plurality of air nozzles arranged in the housing, and the air nozzles are arranged in sequence along the moving direction of the foil.
7. The foil rolling degreasing device as defined in any one of claims 1-6, wherein the foil conveyor comprises an unwinding mechanism, a winding mechanism, a tension mechanism, and a plurality of conveying rollers;
the unwinding mechanism is arranged on the feeding side of the foil rolling device, and the winding mechanism is arranged on the discharging side of the dryer.
8. The foil rolling degreasing device as defined in claim 7, wherein the tension mechanism comprises at least one tension roller for providing foil tension;
the tension roller comprises a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the unreeling mechanism and the foil roller, the second tension roller is arranged between the foil roller and the extraction tank, and the third tension roller is arranged between the extraction tank and the dryer.
9. A rolling degreasing method for foil is characterized in that the rolling degreasing method adopts the foil rolling degreasing device of any one of claims 1-8, and the rolling degreasing method comprises the following steps:
after the foil is rolled, the foil is sequentially extracted and dried, and rolling oil on the surface of the foil is removed.
10. A method of removing oil as claimed in claim 9, wherein countercurrent contact extraction is used during the extraction, and the foil is moved in a direction opposite to the flow direction of the extractant;
optionally, cooling the extractant in the extraction process;
optionally, the temperature of the drying treatment is 60-100 ℃;
optionally, a protective atmosphere is adopted in the extraction process;
optionally, the pressure of the protective atmosphere is greater than the ambient gas pressure;
optionally, the gas of the protective atmosphere comprises nitrogen;
optionally, the extractant in the extraction process comprises dichloromethane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211555590.5A CN115921554A (en) | 2022-12-06 | 2022-12-06 | Foil rolling oil removing device and rolling oil removing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211555590.5A CN115921554A (en) | 2022-12-06 | 2022-12-06 | Foil rolling oil removing device and rolling oil removing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967285A (en) * | 2023-09-22 | 2023-10-31 | 江苏铭丰电子材料科技有限公司 | Copper foil calendering device |
| CN117548485A (en) * | 2023-11-17 | 2024-02-13 | 益阳市东方电子有限公司 | Aluminum foil rolling device for electrolytic capacitor |
-
2022
- 2022-12-06 CN CN202211555590.5A patent/CN115921554A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967285A (en) * | 2023-09-22 | 2023-10-31 | 江苏铭丰电子材料科技有限公司 | Copper foil calendering device |
| CN116967285B (en) * | 2023-09-22 | 2023-12-15 | 江苏铭丰电子材料科技有限公司 | Copper foil calendering device |
| CN117548485A (en) * | 2023-11-17 | 2024-02-13 | 益阳市东方电子有限公司 | Aluminum foil rolling device for electrolytic capacitor |
| CN117548485B (en) * | 2023-11-17 | 2024-05-03 | 益阳市东方电子有限公司 | Aluminum foil rolling device for electrolytic capacitor |
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