Rolled copper foil degreasing equipment and copper powder cleaning device thereof

Abstract

The utility model provides rolled copper foil degreasing equipment and a copper powder cleaning device thereof. The rolled copper foil degreasing equipment comprises a filtering assembly and a scraper assembly. The filter assembly comprises a filter box, a first pipeline and a second pipeline, a filter screen is arranged in the filter box, and the filter screen divides the interior of the filter box into a first cavity and a second cavity. The first pipeline is configured to convey the degreasing fluid in the degreasing tank into the first cavity, and the second pipeline is configured to convey the degreasing fluid in the second cavity into the degreasing tank. The scraper assembly comprises a scraper and a driving mechanism. The cleaning efficiency of copper powder in the degreasing tank is improved, and the service life of degreasing fluid is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of surface treatment equipment for rolled copper foil, and in particular to a degreasing equipment for rolled copper foil and a copper powder cleaning device thereof. Background Technology

[0002] In the production of rolled copper foil, degreasing and cleaning are crucial steps to ensure the cleanliness of the copper foil surface. After rolling, copper powder continuously sheds from the copper foil surface, and this powder enters the degreasing tank with the degreasing solution. As the degreasing solution in the tank is used for an extended period, copper powder accumulates in large quantities. On the one hand, this contaminates the degreasing solution, reducing the degreasing effect and consequently affecting the cleanliness of the copper foil surface and the quality of subsequent processing. On the other hand, the accumulated copper powder can also cause pipe blockages, equipment wear, and other problems, increasing equipment maintenance costs and downtime. Currently, it is necessary to periodically empty the degreasing tank and manually clean the copper powder inside. However, manual cleaning is not only tedious and time-consuming, leading to production interruptions and economic losses, but also yields unsatisfactory cleaning results. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide a degreasing equipment for rolled copper foil and a copper powder cleaning device for overcoming or at least partially solving the above problems, so as to improve the cleaning efficiency of copper powder in the degreasing tank and extend the service life of the degreasing solution.

[0004] Specifically, this utility model provides a copper powder cleaning device for a degreasing equipment for rolled copper foil, comprising:

[0005] A filtration assembly includes a filter box, a first pipe, and a second pipe. The filter box is equipped with a filter screen, which divides the interior of the filter box into a first cavity and a second cavity. The first pipe is configured to transport degreasing liquid from a degreasing tank to the first cavity, and the second pipe is configured to transport degreasing liquid from the second cavity to the degreasing tank.

[0006] A scraper assembly, comprising a scraper and a drive mechanism, the drive mechanism being configured to drive the scraper to move when there is no degreasing liquid in the degreasing tank, so as to scrape off copper powder deposited at the bottom of the degreasing tank.

[0007] Optionally, the drive mechanism includes:

[0008] A slide rail is provided at the bottom of the degreasing tank and extends along a first direction;

[0009] A slider is slidably mounted on the slide rail, and a scraper is fixed on the slider. The scraper extends along a second direction, which is perpendicular to the first direction.

[0010] A linear drive mechanism is connected to the slider and configured to drive the slider to reciprocate along the slide rail.

[0011] Optionally, the filter screen has a multi-layer structure, with a first side near the first cavity and a second side near the second cavity, and the filter pore size of the filter screen gradually decreases from the first side to the second side.

[0012] Optionally, the first cavity is located above the second cavity;

[0013] The bottom of the filter box has a collection hopper that communicates with the second cavity;

[0014] The inlet of the first pipeline is higher than the outlet of the second pipeline.

[0015] Optionally, a delivery pump is provided on the first pipe and / or the second pipe; and / or

[0016] A baffle is provided at the inlet of the first pipe, and multiple liquid inlet holes are provided on the baffle. The liquid inlet holes connect the first pipe and the degreasing tank.

[0017] Optionally, the second pipeline is provided with a flow control valve, which is configured to control the opening and closing of the second pipeline and the flow rate according to the liquid level in the degreasing tank.

[0018] Optionally, the scraper assembly further includes a rubber scraper strip disposed at the bottom of the scraper.

[0019] On the other hand, this utility model also provides a degreasing device for rolled copper foil, including a degreasing tank and a copper powder cleaning device as described in any of the above.

[0020] Optionally, the bottom of the degreasing tank is provided with an upward-facing powder collection tank, which is configured to collect the copper powder scraped off by the scraper.

[0021] The bottom of the powder collection tank is provided with a powder discharge port, and a valve is provided at the powder discharge port. The valve is configured to control the opening and closing of the powder discharge port.

[0022] Optionally, the degreasing tank is equipped with a liquid level sensor, which is configured to detect the liquid level in the degreasing tank;

[0023] The degreasing equipment for rolled copper foil is configured to control the working state of the filter assembly and / or the scraper assembly according to the liquid level in the degreasing tank.

[0024] In this utility model, the degreasing equipment for rolled copper foil and its copper powder cleaning device incorporates a filter assembly. This assembly filters the degreasing solution during the degreasing process, reducing the copper powder content and ensuring the cleanliness of the solution, thereby extending the service life of the solution in the degreasing tank. Furthermore, the addition of a scraper assembly automatically scrapes away the solution in the degreasing tank when the equipment stops, significantly improving the copper powder cleaning efficiency. Therefore, this utility model's copper powder cleaning device, through a dual-mode approach of "dynamic filtration + shutdown scraping," maintains continuous degreasing production while achieving efficient copper powder removal. It solves the problem of low efficiency in manual copper powder cleaning in existing technologies, significantly reduces the overall production cost of degreasing, and improves the degreasing effect.

[0025] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0026] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 This is a schematic structural diagram of a degreasing device for rolled copper foil according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic structural diagram of the first filter layer of a filter screen according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic structural diagram of the second filter layer of a filter screen according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic structural diagram of the third filter layer of a filter screen according to an embodiment of the present invention. Detailed Implementation

[0031] The following reference Figures 1 to 4This invention describes a test apparatus for a liquid preparation system for surface treatment of rolled copper foil according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0032] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Figure 1This is a schematic structural diagram of a degreasing device for rolled copper foil according to an embodiment of the present invention, as shown below. Figure 1 As shown in the figure, this utility model embodiment provides a copper powder cleaning device for a rolled copper foil degreasing equipment, which includes a filter assembly 10 and a scraper assembly 20.

[0036] The filter assembly 10 includes a filter box 11, a first pipe 13, and a second pipe 14. A filter screen 12 is installed inside the filter box 11, dividing the interior of the filter box 11 into a first chamber 111 and a second chamber 112. The first pipe 13 is configured to transport the degreasing liquid in the degreasing tank 30 to the first chamber 111, and the second pipe 14 is configured to transport the degreasing liquid in the second chamber 112 to the degreasing tank 30. Specifically, the inlet of the first pipe 13 is connected to the degreasing tank 30, and the outlet of the first pipe 13 is connected to the first chamber 111; the inlet of the second pipe 14 is connected to the second chamber 112, and the outlet of the second pipe 14 is connected to the degreasing tank 30. The filter assembly 10 is used to filter the degreasing liquid in the degreasing tank 30 during normal operation of the degreasing equipment to reduce the copper powder content in the degreasing liquid. The scraper assembly 20 includes a scraper 23 and a drive mechanism. The drive mechanism is configured to drive the scraper 23 to move when there is no degreasing liquid in the degreasing tank 30, so as to scrape off the copper powder deposited at the bottom of the degreasing tank 30. Specifically, the filter box 11 is installed outside the degreasing tank 30, and the scraper 23 is located at the bottom inside the degreasing tank 30.

[0037] During normal degreasing processing in the copper foil degreasing equipment, the filter assembly 10 can operate continuously to dynamically filter the degreasing liquid in the degreasing tank 30. Alternatively, the filter assembly 10 can be activated at preset intervals to periodically filter the degreasing liquid and reduce the copper powder content in the degreasing liquid in the degreasing tank 30. In other words, after a preset time has elapsed in the degreasing tank 30, a portion of the degreasing liquid is transported to the first cavity 111 through the first pipe 13, while simultaneously replenishing the degreasing tank 30 with additional degreasing liquid to maintain the liquid level in the degreasing tank 30. The degreasing liquid entering the first chamber 111 is filtered by the filter screen 12, and the copper powder is filtered into the first chamber 111. The filtered degreasing liquid then enters the second chamber 112 through the filter screen 12. After a preset time, the degreasing liquid in the second chamber 112 is sent back to the degreasing tank, and at the same time, a portion of the degreasing liquid in the degreasing tank 30 is transported back to the first chamber 111 through the first pipe 13.

[0038] When the copper foil degreasing equipment is shut down and there is no degreasing liquid in the degreasing tank 30, the scraper assembly 20 starts to work. Under the action of the drive mechanism, the scraper 23 can automatically scrape off the copper powder. After scraping is completed, the copper powder can be cleaned by a dust suction device; or the copper powder can be discharged through the powder discharge port 28 on the degreasing tank 30.

[0039] In this embodiment, by setting up the filter component 10, the degreasing liquid can be filtered during the degreasing process of the rolled copper foil degreasing equipment, thereby reducing the copper powder content in the degreasing liquid, ensuring the cleanliness of the degreasing liquid, and thus extending the service life of the degreasing liquid in the degreasing tank 30. Furthermore, by setting up the scraper component 20, the tank liquid in the degreasing tank 30 can be automatically scraped off when the rolled copper foil degreasing equipment stops, greatly improving the copper powder cleaning efficiency. Therefore, the copper powder cleaning device of this embodiment, through a dual mode of "dynamic filtration + shutdown scraping," achieves efficient removal of copper powder while maintaining production continuity, solving the problem of low efficiency in manual copper powder cleaning in the prior art, and also significantly reducing the overall production cost of degreasing treatment while improving the degreasing effect.

[0040] like Figure 1 As shown, in some optional embodiments of this utility model, the driving mechanism includes a slide rail 21, a slider 22, and a linear drive mechanism. The slide rail 21 is disposed at the bottom of the degreasing tank 30 and extends along a first direction. The slider 22 is slidably mounted on the slide rail 21, and a scraper 23 is fixedly mounted on the slider 22, extending along a second direction perpendicular to the first direction. The linear drive mechanism is connected to the slider 22 and configured to drive the slider 22 to reciprocate along the slide rail 21.

[0041] Specifically, the slide rail 21 can be located at the edge of the degreasing tank 30 or at the center of the degreasing tank 30. Preferably, the slide rail 21 is located at the edge of the degreasing tank 30, which helps to reduce cleaning dead corners. The scraper 23 is perpendicular to the slide rail 21. The drive mechanism can include a single slide rail or a double slide rail. When the drive mechanism includes a double slide rail, the sliders 22 are arranged in a one-to-one correspondence with the slide rails 21, the scraper 23 is installed between the two sliders 22, and at least one slider 22 is connected to a linear drive mechanism.

[0042] In this embodiment, the reciprocating movement of the slider 22 and the scraper 23 driven by the linear drive mechanism can realize automatic and continuous scraping of the bottom of the degreasing tank 30, which improves the cleaning efficiency and effect of copper powder and saves manpower.

[0043] In some optional embodiments of this utility model, the linear drive mechanism is a linear motor 24, the rotor of which is connected to the slider 22. The linear motor 24 drives the slider 22 to slide along the slide rail 21. This embodiment can achieve efficient and precise reciprocating motion control, improving the scraping efficiency and stability of the scraper 23 in the degreasing tank 30.

[0044] In some optional embodiments of this utility model, the linear drive mechanism includes a lead screw assembly and a drive motor. The lead screw assembly includes a ball screw and a nut; the nut is fixedly connected to the slider and is sleeved on the ball screw. The drive motor drives the ball screw to rotate, thereby causing the nut to reciprocate linearly along the ball screw; the nut drives the slider to move, and the lead screw and nut are slidably connected to the linear guide rail. This embodiment, by combining the lead screw assembly with the drive motor, achieves stable and precise linear reciprocating motion of the slider, driving the scraper to scrape efficiently, effectively improving the cleaning efficiency of copper powder.

[0045] In some optional embodiments of this utility model, the scraper is rotatably mounted on the bottom of the degreasing tank, and the drive mechanism is configured to drive the scraper to rotate around a pivot. Specifically, the scraper is mounted at the middle position of the bottom of the degreasing tank, and the number of scrapers can be one or at least two. When the number of scrapers is at least two, the scrapers are spaced apart. However, compared with the above three embodiments, the scraper assembly in this embodiment has a larger cleaning dead angle.

[0046] like Figure 1 As shown, in some optional embodiments of this utility model, the filter screen 12 has a multi-layer structure, that is, the filter screen 12 includes at least two filter layers with different pore sizes. The filter screen 12 has a first side near the first cavity 111 and a second side near the second cavity 112, and the pore size of the filter screen 12 gradually decreases from the first side to the second side.

[0047] In this embodiment, the pore size of the multi-layer filter screen gradually decreases from the first side to the second side, which can achieve gradient interception of copper powder, improve filtration accuracy and efficiency, reduce the risk of filter screen clogging, extend the service life of the filter screen, and ensure that the degreasing liquid after filtration is purer.

[0048] Furthermore, in some optional embodiments of this utility model, such as Figures 2 to 4 As shown, the filter 12 includes a first filter layer 121, a second filter layer 122, and a third filter layer 123. The first filter layer 121 has the largest pore size, while the third filter layer 123 has the smallest pore size. In use, large particles are quickly intercepted by the first filter layer 121 to prevent clogging; medium-sized particles are intercepted by the second filter layer 122; and fine particles are ultimately retained by the third filter layer 123.

[0049] like Figure 1 As shown, in some optional embodiments of this utility model, the first cavity 111 is located above the second cavity 112. In some alternative embodiments, the first cavity and the second cavity may also be distributed along the left-right direction.

[0050] In some optional embodiments of this utility model, a collection hopper 113 communicating with the second cavity 112 is formed at the bottom of the filter box 11. Preferably, the collection hopper 113 has a conical structure.

[0051] When the filter assembly 10 is working, the degreasing liquid can be allowed to remain still in the second chamber 112 for a period of time. Utilizing the principle of gravity sedimentation, small copper particles that were not intercepted by the filter screen 12 settle into the collection hopper, thereby reducing the copper powder content in the degreasing liquid within the second chamber 112. Then, the degreasing liquid in the second chamber 112 is returned to the degreasing tank 30. Therefore, this embodiment is beneficial for improving the filtration effect on copper powder in the degreasing liquid.

[0052] Furthermore, the bottom of the collection hopper 113 is provided with a discharge port, and a control valve is provided at the discharge port to facilitate the centralized cleaning of copper powder in the collection hopper and prevent back mixing of micro powder.

[0053] In some optional embodiments of this utility model, a delivery pump 15 is provided on the first pipeline 13.

[0054] In some optional embodiments of this utility model, a delivery pump 15 is provided on the second pipeline 14.

[0055] In some optional embodiments of this utility model, a delivery pump 15 is provided on the first pipe 13 and the second pipe 14.

[0056] In the above embodiments, by providing a delivery pump 15, the filtration efficiency of the filter assembly 10 can be improved.

[0057] like Figure 1 As shown, in some optional embodiments of this invention, the inlet of the first pipe 13 is higher than the outlet of the second pipe 14. This arrangement facilitates the use of gravity to promote the flow of the degreasing liquid, reducing the load on the transfer pump 15.

[0058] like Figure 1 As shown, in some optional embodiments of this utility model, a baffle 17 is provided at the inlet of the first pipe 13, and a plurality of liquid inlet holes are provided on the baffle 17, which connect the first pipe 13 and the degreasing tank 30. This embodiment can prevent large particles of impurities in the degreasing tank 30 from entering the first pipe 13 and causing blockage.

[0059] In some optional embodiments of this utility model, a flow control valve 16 is provided on the second pipe 14. The flow control valve 16 is configured to control the opening and closing of the second pipe 14 and the flow rate according to the liquid level in the degreasing tank 30. By setting the flow control valve 16, it is helpful to maintain the liquid level balance in the degreasing tank 30 and prevent overflow or liquid level drop.

[0060] In some optional embodiments of this utility model, the scraper assembly 20 further includes a rubber scraper strip 25, which is disposed at the bottom of the scraper 23. The rubber scraper strip 25 adapts to the surface of the groove bottom through elastic deformation, which can not only avoid scratches caused by rigid contact between the metal scraper 23 and the groove bottom, but also more effectively scrape off residual copper powder.

[0061] An embodiment of this utility model also provides a degreasing device for rolled copper foil, which includes a degreasing tank 30 and a copper powder cleaning device as described in any of the above embodiments.

[0062] In this embodiment, the copper foil rolling equipment has a dynamic copper powder filtering function, eliminating the need for downtime maintenance, significantly extending the lifespan of the degreasing solution, and significantly reducing overall maintenance costs, ensuring continuous production and high cleanliness. Furthermore, the copper foil rolling equipment has an automatic scraping function upon shutdown, resulting in a high copper powder removal rate.

[0063] In some optional embodiments of this utility model, the bottom of the degreasing tank 30 is provided with an upward-opening powder collection tank 27, which is configured to collect copper powder scraped off by the scraper 23. A powder discharge port 28 is provided at the bottom of the powder collection tank 27, and a valve is provided at the discharge port 28 to control the opening and closing of the discharge port 28. Preferably, the powder collection tank 27 has a V-shaped structure. When the scraper 23 completes the cleaning operation, it collects the copper powder into the powder collection tank 27, and then discharges the copper powder to the outside of the degreasing tank 30 through the discharge port 28. In this embodiment, the V-shaped powder collection tank 27 collects copper powder by gravity flow on its inclined surface. Combined with the large-diameter discharge port 28 and the valve, it achieves rapid discharge of copper powder with zero residue, avoiding dead corners in manual cleaning, and reducing the risk of clogging and the amount of residue.

[0064] Further, in some embodiments of this utility model, the driving mechanism includes a slide rail 21, a slider 22, and a linear driving mechanism. The first direction is the left-right direction, and the second direction is the front-back direction. The slide rail 21 is close to the front sidewall of the degreasing tank 30 and extends in the left-right direction. The scraper 23 extends from the front side to the rear side of the degreasing tank 30. The powder collection tank 27 extends in the front-back direction and is close to the left or right sidewall of the degreasing tank 30. In some alternative embodiments, the first direction is the front-back direction, the second direction is the left-right direction, and the powder collection tank 27 is close to the front or rear sidewall of the degreasing tank 30.

[0065] In some optional embodiments of this utility model, a liquid level sensor 40 is provided in the degreasing tank 30, and the liquid level sensor 40 is configured to detect the liquid level in the degreasing tank 30. The rolled copper foil degreasing equipment is configured to control the working state of the filter assembly 10 and / or the scraper assembly 20 according to the liquid level in the degreasing tank 30.

[0066] By setting up a liquid level sensor 40, the opening of the flow control valve 16 on the second pipe 14 can be controlled according to the real-time liquid level in the degreasing tank 30, so as to maintain the liquid level balance in the degreasing tank 30.

[0067] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A copper powder cleaning device for a degreasing equipment of rolled copper foil, characterized in that, include: A filtration assembly includes a filter box, a first pipe, and a second pipe. The filter box is equipped with a filter screen, which divides the interior of the filter box into a first cavity and a second cavity. The first pipe is configured to transport degreasing liquid from a degreasing tank to the first cavity, and the second pipe is configured to transport degreasing liquid from the second cavity to the degreasing tank. A scraper assembly, comprising a scraper and a drive mechanism, the drive mechanism being configured to drive the scraper to move when there is no degreasing liquid in the degreasing tank, so as to scrape off copper powder deposited at the bottom of the degreasing tank.

2. The copper powder cleaning device according to claim 1, characterized in that, The drive mechanism includes: A slide rail is provided at the bottom of the degreasing tank and extends along a first direction; A slider is slidably mounted on the slide rail, and a scraper is fixed on the slider. The scraper extends along a second direction, which is perpendicular to the first direction. A linear drive mechanism is connected to the slider and configured to drive the slider to reciprocate along the slide rail.

3. The copper powder cleaning device according to claim 1, characterized in that, The filter screen has a multi-layer structure, with a first side near the first cavity and a second side near the second cavity, and the filter pore size of the filter screen gradually decreases from the first side to the second side.

4. The copper powder cleaning device according to claim 1, characterized in that, The first cavity is located above the second cavity; The bottom of the filter box has a collection hopper that communicates with the second cavity; The inlet of the first pipeline is higher than the outlet of the second pipeline.

5. The copper powder cleaning device according to claim 1, characterized in that, A delivery pump is provided on the first pipeline and / or the second pipeline; and / or A baffle is provided at the inlet of the first pipe, and multiple liquid inlet holes are provided on the baffle. The liquid inlet holes connect the first pipe and the degreasing tank.

6. The copper powder cleaning device according to claim 1, characterized in that, The second pipeline is equipped with a flow control valve, which is configured to control the opening and closing of the second pipeline and the flow rate according to the liquid level in the degreasing tank.

7. The copper powder cleaning device according to claim 1, characterized in that, The scraper assembly also includes a rubber scraper strip disposed at the bottom of the scraper.

8. A degreasing device for rolled copper foil, characterized in that, It includes a degreasing tank and a copper powder cleaning device as described in any one of claims 1 to 7.

9. The degreasing equipment for rolled copper foil according to claim 8, characterized in that, The bottom of the degreasing tank is provided with an upward-facing powder collection tank, which is configured to collect the copper powder scraped off by the scraper. The bottom of the powder collection tank is provided with a powder discharge port, and a valve is provided at the powder discharge port. The valve is configured to control the opening and closing of the powder discharge port.

10. The degreasing equipment for rolled copper foil according to claim 8, characterized in that, The degreasing tank is equipped with a liquid level sensor, which is configured to detect the liquid level in the degreasing tank. The degreasing equipment for rolled copper foil is configured to control the working state of the filter assembly and / or the scraper assembly according to the liquid level in the degreasing tank.

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