Wet-process diaphragm casting piece cooling device

Abstract

The utility model provides a wet-process diaphragm casting piece cooling device, which relates to the technical field of wet-process diaphragm production devices and comprises a melt pipeline and a clothes hanger type die head through which fluid sequentially passes along the production direction, a casting piece roller is arranged below the clothes hanger type die head, a back cold air cover component is arranged on one side of the casting piece roller, and the back cold air cover component is arranged on the other side of the casting piece roller. An air inlet assembly and an air exhaust fan are arranged on one side, deviating from the casting piece roller, of the back cold air cover assembly; a plurality of static pressure box assemblies are arranged at the open end of the back cold air cover assembly, and a gap is reserved between every two adjacent static pressure box assemblies and used for exhausting air. The air inlet assembly communicates with the back cold air cover assembly through a hose and is used for distributing inlet air to the static pressure box assembly, the static pressure box assembly faces a casting piece roller and is used for blowing cold air to a casting piece on the surface of the casting piece roller, and the technical problems that in the prior art, back cooling is lacked, and the temperatures of the two faces of the machined casting piece are not uniform, and the flatness is not consistent are solved. And the technical effects of improving the production efficiency and improving the thickness and quality of the casting piece are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of wet diaphragm production equipment, and in particular to a wet diaphragm casting cooling device. Background Technology

[0002] In the field of wet-process lithium-ion battery separator production, existing wet-process lithium-ion battery separator production lines use ultra-high molecular weight polyethylene powder and white oil to plasticize in a twin-screw extruder, forming a high-temperature melt of approximately 250°C. The melt flows sequentially through a melt pipeline into a distribution block and a coat hanger-type die, where it becomes a flattened fluid. It then flows to the surface of a casting roller at approximately 15°C, where it is rapidly cooled to form a thick sheet before entering the subsequent biaxial stretching process.

[0003] In existing casting production equipment, the casting rollers rotate at a relatively slow speed, approximately 7 m / min. Under these conditions, no back-cooling structure is configured, and cooling relies solely on one side of the casting rollers. However, with the improvement of production efficiency and the increase in production line speed, the cooling time of the casting sheets is naturally shortened accordingly. At the same time, the increased requirements for the tensile strength of the diaphragm lead to an increase in the total draw ratio, and the thickness of the sheet must also be increased accordingly.

[0004] Therefore, the lack of a back-cooling structure in the production of existing cast sheets slows down processing efficiency and results in uneven surface temperatures and inconsistent flatness on both sides of the finished cast sheet. For example, when the required cast sheet thickness is 1.82 mm and the speed of the casting roller is 10 m / min, without back cooling, at the moment of peeling off the casting roller, the surface temperature of the thick sheet on the roller side is 56°C, while the surface temperature of the thick sheet on the back roller side is 178°C. This large temperature difference between the two sides leads to inconsistent crystallinity and internal stress on both sides, affecting the flatness and internal quality of the subsequent biaxially oriented film. Utility Model Content

[0005] The purpose of this invention is to provide a wet-process diaphragm casting cooling device to alleviate the technical problems existing in the prior art, such as lack of back cooling, uneven temperature on both sides of the processed casting, and inconsistent flatness, crystallinity, and internal stress.

[0006] The present invention provides a wet process diaphragm casting sheet cooling device, which includes a melt pipeline through which fluid passes sequentially along the production direction and a coat hanger type die head, with a casting sheet roller arranged below the coat hanger type die head.

[0007] A back-cooling hood assembly is arranged on one side of the casting roll. An air inlet assembly and an exhaust fan are arranged on the side of the back-cooling hood assembly away from the casting roll. Multiple static pressure box assemblies are arranged at the open end of the back-cooling hood assembly. A gap is left between two adjacent static pressure box assemblies for exhaust. The air inlet assembly is connected to the back-cooling hood assembly through a hose and is used to distribute the air inlet to the static pressure box assembly. The static pressure box assembly faces the casting roll and is used to cool the casting sheets on the surface of the casting roll.

[0008] Furthermore, the back-cooling shroud assembly includes a housing, a partition, a first chamber, and a second chamber;

[0009] The shell has an arc-shaped opening, and a partition is welded to the middle of the shell, which divides the shell into a first chamber and a second chamber;

[0010] Multiple static pressure chamber assemblies are arranged along the openings of the first and second chambers; the air inlet assembly is connected to the back of the housing via a hose, and the air inlet enters the static pressure chamber assembly through the positive pressure chambers on both sides inside the housing.

[0011] Furthermore, it also includes an air knife holder, which includes legs, guide rails, and a connecting frame;

[0012] Two support legs are arranged on both sides of the casting roll, and a guide rail is arranged horizontally between the two support legs. The guide rail is slidably connected to a connecting frame; the housing is suspended and installed on one side of the casting roll through the connecting frame.

[0013] Furthermore, arc-shaped retaining rings are arranged on both sides of the opening end of the shell; the arc-shaped retaining rings are made of polytetrafluoroethylene.

[0014] Furthermore, multiple pressure gauges are installed on the back of the casing to monitor the wind pressure values ​​at different locations.

[0015] Furthermore, the air intake assembly includes a purification air conditioning unit and an air intake fan. The air intake fan is placed inside the purification air conditioning unit, and the air outlet of the air intake fan is connected to the housing via a flexible hose.

[0016] Furthermore, the static pressure box assembly includes a static pressure box body, an air inlet, an air outlet, and a baffle plate;

[0017] The static pressure box has air inlets on both sides. The static pressure box is connected to the positive pressure chamber inside the shell by a flange. The air inlets are connected to the positive pressure chamber inside the shell. The air outlet is located at the top of the static pressure box and is slit-shaped. A baffle is arranged inside the static pressure box to guide the direction of airflow.

[0018] Furthermore, the length of the static pressure chamber is 1m to 2m.

[0019] Furthermore, the casing is made of stainless steel, and the outer wall thickness is 1mm to 2mm.

[0020] Beneficial effects:

[0021] This utility model provides a wet-process diaphragm casting sheet cooling device. A back-cooling fan assembly is arranged on one side of the casting roll. An air inlet assembly and an exhaust fan are arranged on the side of the back-cooling fan assembly away from the casting roll. Multiple static pressure box assemblies are arranged at the open end of the back-cooling fan assembly. A gap is left between two adjacent static pressure box assemblies for exhaust. The air inlet assembly is connected to the back-cooling fan assembly through a hose to distribute the air inlet to the static pressure box assemblies. The static pressure box assemblies face the casting roll and are used to cool the casting sheets on the surface of the casting roll.

[0022] By arranging the static pressure box assemblies with their open ends facing the casting rollers, cool air can be delivered to the casting sheets on the roller surface, achieving efficient cooling, dehumidification, temperature regulation, and air purification, ensuring casting quality and work efficiency. The gaps between adjacent static pressure box assemblies, in conjunction with the exhaust fan, allow the blown air to absorb heat from the casting sheet surface. This heat, along with oil fumes and oligomers, is quickly drawn away by the exhaust fan through the open gaps between the static pressure box assemblies and enters the exhaust gas treatment device, preventing contamination of the casting sheet surface. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of the wet-process diaphragm casting cooling device provided in this embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the back cooling fan shroud assembly in the wet diaphragm casting cooling device provided in this embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the static pressure box assembly in the wet-process diaphragm casting cooling device provided in this embodiment of the utility model;

[0027] Figure 4 A schematic diagram showing the position of the pressure gauge in the wet-process diaphragm casting cooling device provided in this embodiment of the utility model;

[0028] Figure 5 An example diagram showing the instantaneous temperature distribution along the thickness direction of the cast sheet on the peeling roller of the wet diaphragm casting cooling device provided in this embodiment of the utility model.

[0029] Icons: 1 - Melt line; 2 - Coat hanger type die head; 3 - Casting roller; 4 - Back-cooling hood assembly; 401 - Housing; 402 - Partition; 403 - First chamber; 404 - Second chamber; 405 - Arc-shaped baffle; 5 - Air inlet assembly; 501 - Cleanroom air conditioning unit; 502 - Air inlet fan; 6 - Exhaust fan; 7 - Static pressure box assembly; 701 - Static pressure box body; 702 - Air inlet; 703 - Air outlet; 704 - Guide plate; 8 - Air knife bracket; 801 - Support leg; 802 - Guide rail; 803 - Connecting frame; 9 - Pressure gauge. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] like Figure 1 , Figure 2 As shown, this embodiment provides a wet-process diaphragm casting sheet cooling device, including: a melt pipeline 1 through which fluid flows sequentially along the production direction and a coat hanger type die head 2. A casting sheet roller 3 is arranged below the coat hanger type die head 2. A back-cooling fan shroud assembly 4 is arranged on one side of the casting sheet roller 3. An air inlet assembly 5 and an exhaust fan 6 are arranged on the side of the back-cooling fan shroud assembly 4 away from the casting sheet roller 3. A plurality of static pressure box assemblies 7 are arranged at the open end of the back-cooling fan shroud assembly 4. A gap is left between two adjacent static pressure box assemblies 7 for exhaust. The air inlet assembly 5 is connected to the back-cooling fan shroud assembly 4 through a hose and is used to distribute the air inlet to the static pressure box assembly 7. The static pressure box assembly 7 faces the casting sheet roller 3 and is used to blow cold air onto the casting sheet on the surface of the casting sheet roller 3.

[0038] Specifically, in the wet-process diaphragm casting production, ultra-high molecular weight polyethylene powder and white oil are plasticized by a twin-screw extruder to form a high-temperature melt. The melt flows along melt pipeline 1 under pressure, providing a transport channel for the melt, which flows to the coat hanger die 2. The coat hanger die 2 evenly distributes the melt from melt pipeline 1, forming a flat fluid within it. The casting roller 3 is positioned below the coat hanger die 2. When the flat fluid flows out of the coat hanger die 2, it flows directly onto the surface of the casting roller 3, where the high-temperature melt rapidly cools upon contact with the surface of the casting roller 3.

[0039] A circular back-cooling hood assembly 4 is arranged on one side of the casting roller 3 to cover a portion of the casting. The back-cooling hood assembly 4 accelerates the cooling of the back side of the casting on the surface of the casting roller 3 and ensures uniform cooling of the casting in the lateral direction. An air inlet assembly 5 and an exhaust fan 6 are arranged on the side of the back-cooling hood assembly 4 away from the casting roller 3. The air inlet assembly 5 dehumidifies, regulates the temperature, and purifies the incoming air, providing dry and clean air to the back-cooling hood assembly 4, allowing the cool air to smoothly enter the static pressure box assembly 7 inside the back-cooling hood assembly 4 through the hose. The exhaust fan 6 is responsible for extracting hot air, fumes, and oligomers from inside the back-cooling hood assembly 4, maintaining a good cooling environment inside the back-cooling hood assembly 4.

[0040] The opening of the back-cooling hood assembly 4 is arc-shaped, with multiple static pressure box assemblies 7 evenly arranged. A gap is left between adjacent static pressure box assemblies 7. The air inlet assembly 5 is connected to the positive pressure chamber inside the housing 401 of the back-cooling hood assembly 4 via a flexible hose. The static pressure box assemblies 7 are also connected to the housing 401 on both sides via flanges to distribute the incoming air into the static pressure box assemblies 7. After entering the static pressure box assemblies 7, the cold air is evenly blown onto the casting sheets on the surface of the casting roller 3 through the slits facing the casting roller 3. The air blown out by the static pressure box assemblies 7 absorbs heat from the surface of the casting sheets and, along with oil fumes and oligomers, is quickly drawn away by the exhaust fan 6 through the open gaps between the annularly arranged static pressure box assemblies 7, entering the exhaust gas treatment device.

[0041] In an embodiment of this utility model, the back-cooling shroud assembly 4 includes a housing 401, a partition 402, a first chamber 403, and a second chamber 404. The housing 401 has an arc-shaped opening, and a partition 402 is welded to the middle of the housing 401. The partition 402 divides the housing 401 into the first chamber 403 and the second chamber 404. Multiple static pressure box assemblies 7 are arranged along the openings of the first chamber 403 and the second chamber 404. The air inlet assembly 5 is connected to the back of the housing 401 through a hose, and the air enters the static pressure box assembly 7 through the positive pressure chambers on both sides inside the housing 401.

[0042] It also includes an air knife support 8, which includes legs 801, guide rails 802 and connecting frame 803; two legs 801 are arranged on both sides of the casting roll 3, and a guide rail 802 is arranged horizontally between the two legs 801, and the connecting frame 803 is slidably connected to the guide rail 802; the housing 401 is suspended on one side of the casting roll 3 through the connecting frame 803.

[0043] Arc-shaped retaining rings 405 are also arranged on both sides of the opening end of the housing 401; the arc-shaped retaining rings 405 are made of polytetrafluoroethylene.

[0044] like Figure 4 As shown, multiple pressure gauges 9 are also installed on the back of the housing 401. The pressure gauges 9 are used to monitor the wind pressure values ​​at different locations.

[0045] Specifically, the housing 401 has an arc-shaped opening. The arc-shaped opening is concentric with the circular surface of the casting roller 3, allowing it to fit snugly against the casting roller 3 and enabling the cold air blown from the static pressure box assembly 7 to act on the casting sheets on the surface of the casting roller 3. In terms of material, it requires a material with sufficient strength and corrosion resistance, such as stainless steel, to ensure long-term use in humid environments without damage. The dimensions of the housing 401 are adjusted according to the diameter of the casting roller 3 and actual production needs to ensure that it can cover the area of ​​the casting sheets that needs cooling. A partition 402 is welded to the middle of the housing 401, dividing the internal space of the housing 401 into two independent parts: a first chamber 403 and a second chamber 404. The first chamber 403 and the second chamber 404 are used to house multiple static pressure box assemblies 7, with the remaining space serving as an exhaust channel. Multiple static pressure box assemblies 7 are arranged along the openings of the first chamber 403 and the second chamber 404.

[0046] The air inlet assembly 5 is connected to the positive pressure chamber inside the housing 401 via a flexible hose, and the two flanges of the static pressure box assembly 7 are connected to the positive pressure chamber inside the housing 401. Since the first chamber 403 and the second chamber 404 are independent and connected to the static pressure box assembly 7 in different areas, the air intake, exhaust, and temperature of the two chambers can be independently adjusted according to the cooling requirements of different parts of the casting. For example, when the casting passes through the first chamber 403, the temperature is still high and the smoke is heavy, so the exhaust volume should be increased. When the casting passes through the second chamber 404, the blowing volume should be increased to enhance the cooling effect on the back of the casting. By controlling the air intake of the first chamber 403 and the second chamber 404 separately, precise cooling of different areas of the casting can be achieved, improving the uniformity of casting cooling and the smoke extraction effect.

[0047] Two legs 801 of the air knife support 8 are respectively arranged on both sides of the casting roller 3, providing support. A guide rail 802 is arranged laterally between the two legs 801. The guide rail 802 is a linear guide rail with a low coefficient of friction and good wear resistance. The connecting frame 803 can slide smoothly on the guide rail 802, accurately positioning the back-cooling shroud assembly 4. The connecting frame 803 suspends the housing 401 of the back-cooling shroud assembly 4 on one side of the casting roller 3. The connection between the connecting frame 803 and the housing 401 is achieved by welding, bolting, or other reliable fixing methods to ensure the stability of the housing 401 in the suspended state.

[0048] It should be noted that by using the existing air knife support 8 as a support and keeping it concentric with the casting roller 3, efficiency can be improved and quality can be guaranteed, while eliminating the need to build additional support legs 801, thus saving costs.

[0049] The arc-shaped baffle ring 405 is made of polytetrafluoroethylene. It serves two purposes: first, to prevent direct collision between the back-cooling hood assembly 4 and the casting roller 3; and second, to provide a side seal. The annular space between the casting roller 3 and the back-cooling hood assembly 4 is adjusted to a slight negative pressure, so that flue gas will not leak from either side.

[0050] In an embodiment of this utility model, the air intake component 5 includes a purification air conditioning unit 501 and an air intake fan 502. The air intake fan 502 is placed inside the purification air conditioning unit 501, and the air outlet of the air intake fan 502 is connected to the housing 401 through a flexible hose.

[0051] like Figure 3 As shown, the static pressure box assembly 7 includes a static pressure box body 701, an air inlet 702, an air outlet 703, and a baffle plate 704.

[0052] The static pressure box body 701 has air inlets 702 on both sides. The static pressure box body 701 is connected to the positive pressure chamber flange inside the shell 401. The air inlets 702 connect to the positive pressure chamber inside the shell 401. The air outlet 703 is located at the top of the static pressure box body 701 and is slit-shaped. The guide plate 704 is located inside the static pressure box body 701 and is used to guide the direction of airflow.

[0053] The length of the static pressure chamber is 1m to 2m.

[0054] The housing 401 is made of stainless steel, and the outer wall thickness of the housing 401 is 1mm to 2mm.

[0055] Specifically, the air purification unit 501 dehumidifies the incoming air, removing excess moisture to prevent dampness from affecting the castings, such as causing water stains on the surface and impacting their physical properties. Secondly, the air purification unit 501 regulates the air to a suitable temperature to meet the medium temperature requirements during the casting cooling process. Furthermore, the air purification unit 501 purifies the air, filtering out dust, impurities, and particulate matter to ensure that only dry, clean air at a suitable temperature enters the static pressure chamber assembly 7. An intake fan 502 is placed inside the air purification unit 501 to power the airflow. After the air purification unit 501 processes the air, the intake fan 502 draws the air out of the unit and forces it into the positive pressure chamber inside the housing 401 through the outlet.

[0056] The static pressure chamber 701 in the static pressure chamber assembly 7 provides a relatively enclosed space for airflow and processing. Its length is 1m to 2m, matching the width of the casting rollers, allowing it to cover a large area of ​​the casting sheets and ensuring comprehensive cooling. Air inlets 702 are located on both sides of the static pressure chamber 701, connected by flanges to the positive pressure chamber inside the housing 401. Side air inlets ensure uniform static pressure distribution within the static pressure chamber 701, preventing excessive or insufficient localized airflow at the slit outlet 703, thus improving cooling uniformity. The outlet 703 is located at the top of the static pressure chamber 701 and is slit-shaped. A guide plate 704 is positioned inside the static pressure chamber 701 to guide the airflow direction. When air enters the static pressure box 701 from the air inlet 702, the baffle 704 adjusts and guides the airflow so that the air can flow to the air outlet 703, avoiding turbulence in the airflow inside the static pressure box 701, thereby ensuring that the cold air can be blown towards the casting at a stable and uniform lateral speed.

[0057] The outer wall thickness of the housing 401 is 1mm to 2mm to ensure that the housing 401 has sufficient strength to withstand the internal wind pressure.

[0058] Through the above embodiments, the working process of the wet-process diaphragm casting cooling device provided by this utility model is as follows:

[0059] Ultra-high molecular weight polyethylene powder and white oil are plasticized by a twin-screw extruder to form a high-temperature melt. The melt flows into the coat hanger type die head 2 along the melt pipeline 1, becomes a flat fluid, and then flows to the surface of the casting roller 3, where it is rapidly cooled to form a casting sheet.

[0060] The air purification unit 501 in the air intake assembly 5 processes the air, and the air intake fan 502 sends the air through a hose into the static pressure box assembly 7 inside the housing. The air guide plate 704 inside the static pressure box 701 guides the airflow, and the cold air is blown from the elongated air outlet 703 towards the casting plate.

[0061] The air, which absorbs heat from the casting, carrying oil fumes and oligomers, is drawn away by the exhaust fan 6 through the gap between adjacent static pressure box assemblies 7 and enters the waste gas treatment device. This completes the cooling of the wet-process diaphragm casting.

[0062] like Figure 5 As shown, at the instant of peeling off the casting roll, the surface temperature of the casting on the roll side is 42℃, and the surface temperature of the casting on the back roll side is 117℃. This is a significant improvement compared to the condition without a cooling device, and meets the actual production requirements.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wet separator sheet casting cooling apparatus comprising: The fluid passes sequentially along the production direction through a melt pipeline (1) and a coat hanger-type die head (2), with a casting roller (3) arranged below the coat hanger-type die head (2). Its characteristic is that... A back-cooling hood assembly (4) is arranged on one side of the casting roll (3). An air inlet assembly (5) and an exhaust fan (6) are arranged on the side of the back-cooling hood assembly (4) away from the casting roll (3). Multiple static pressure box assemblies (7) are arranged at the open end of the back-cooling hood assembly (4). A gap is left between two adjacent static pressure box assemblies (7) for exhaust. The air inlet assembly (5) is connected to the back-cooling hood assembly (4) through a hose for distributing the air inlet to the static pressure box assembly (7). The static pressure box assembly (7) faces the casting roll (3) and blows cold air onto the casting sheets on the surface of the casting roll (3).

2. The wet-process diaphragm casting cooling device according to claim 1, characterized in that, The back-cooling shroud assembly (4) includes a housing (401), a partition (402), a first chamber (403), and a second chamber (404); The housing (401) has an arc-shaped opening, and the partition (402) is welded to the middle of the housing (401). The partition (402) divides the housing (401) into the first chamber (403) and the second chamber (404). Multiple static pressure chamber assemblies (7) are arranged along the openings of the first chamber (403) and the second chamber (404); the air inlet assembly (5) is connected to the back of the housing (401) via a hose, and the air inlet enters the static pressure chamber assembly (7) through the positive pressure chambers on both sides inside the housing (401).

3. The wet-process diaphragm casting cooling device according to claim 2, characterized in that, It also includes an air knife support (8), which includes a support leg (801), a guide rail (802), and a connecting frame (803); Two support legs (801) are arranged on both sides of the casting roll (3), and a guide rail (802) is arranged horizontally between the two support legs (801). The guide rail (802) is slidably connected to the connecting frame (803). The housing (401) is suspended on one side of the casting roller (3) via the connecting frame (803).

4. The wet-process diaphragm casting cooling device according to claim 2, characterized in that, The shell (401) is also provided with arc-shaped retaining rings (405) on both sides of the opening end; the arc-shaped retaining rings (405) are made of polytetrafluoroethylene.

5. The wet-process diaphragm casting cooling device according to claim 2, characterized in that, The back of the housing (401) is also provided with a number of pressure gauges (9), which are used to monitor the wind pressure values ​​at different locations.

6. The wet-process diaphragm casting cooling device according to claim 2, characterized in that, The air intake assembly (5) includes a purification air conditioning unit (501) and an air intake fan (502). The air intake fan (502) is placed inside the purification air conditioning unit (501), and the air outlet of the air intake fan (502) is connected to the housing (401) through a flexible hose.

7. The wet-process diaphragm casting cooling device according to claim 6, characterized in that, The static pressure box assembly (7) includes a static pressure box body (701), an air inlet (702), an air outlet (703), and a baffle plate (704); The static pressure box body (701) has air inlets (702) arranged on both sides. The static pressure box body (701) is connected to the positive pressure chamber flange inside the shell (401). The air inlets (702) are connected to the positive pressure chamber inside the shell (401). The air outlet (703) is arranged at the top of the static pressure box body (701). The air outlet (703) is slit-shaped. The guide plate (704) is arranged inside the static pressure box body (701). The guide plate (704) is used to guide the direction of airflow.

8. The wet-process diaphragm casting cooling device according to claim 7, characterized in that, The length of the static pressure box is 1m to 2m.

9. The wet-process diaphragm casting cooling device according to claim 2, characterized in that, The housing (401) is made of stainless steel, and the outer wall thickness of the housing (401) is 1mm to 2mm.

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