Dust removal device and production system
By combining electrostatic removal and adsorption devices, the problem of dust adsorption in membrane electrode production was solved, achieving efficient dust removal and improving product quality.
Patent Information
- Application Number
- CN202423140824.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-19
AI Technical Summary
During the production of membrane electrodes, the membrane material may become defective due to the electrostatic adsorption of dust from the air, and existing technologies are unable to effectively remove the dust.
The system employs a combination of an electrostatic removal device and an electrostatic generator. The electrostatic removal device removes static electricity from the membrane material, while the electrostatic generator adsorbs dust. Combined with the design of the adhesive layer and filter screen, the dust adsorption effect is improved.
It effectively reduces dust on the membrane surface, improves product quality, avoids electrostatic re-adsorption, and is suitable for working conditions with extremely high cleanliness requirements.
Smart Images
Figure CN223717885U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of membrane electrode production, in particular to a dust removal device and a production system. BACKGROUND
[0002] The core component of a hydrogen fuel cell or a proton exchange membrane water electrolyzer is a membrane electrode, which includes a proton membrane and a catalyst layer and a gas diffusion layer on both sides of the proton membrane. In order to prepare the membrane electrode, the catalyst layer needs to be coated on the proton membrane to form a catalyst coated membrane (CCM). In the prior art, CCM can be prepared by transfer printing or direct coating. During the operation of the coating, transfer printing, roll stock slitting and die cutting production lines, static electricity is generated due to the friction between the film materials, which easily adsorbs dust in the air, resulting in product defects. CONTENT OF THE UTILITY MODEL
[0003] The purpose of the present application is to provide a dust removal device and a production system for reducing the dust adsorbed on the surface of the film material.
[0004] The embodiments of the present application are implemented as follows:
[0005] In a first aspect, the embodiments of the present application provide a dust removal device, which includes an electrostatic removal device and an electrostatic generation device.
[0006] The electrostatic generation device has opposite first and second ends, and an adsorption surface between the first and second ends; the electrostatic generation device is configured such that the adsorption surface can have static electricity to adsorb dust on the film material during the movement of the film material from the first end to the second end; and the electrostatic removal device is used to remove the static electricity of the film material before it reaches the second end.
[0007] When the dust removal device provided by the above technical solution is applied to production, the static electricity on the film material can be removed by the electrostatic removal device, thereby reducing the electrostatic adsorption of dust on the film material, making it easier for the dust on the film material to be adsorbed on the adsorption surface of the electrostatic generation device during the process of passing through the electrostatic generation device, and reducing the impact of the quality of the production product due to the dust on the film material.
[0008] In some optional embodiments, the electrostatic removal device is arranged between the first end and the second end.
[0009] In the technical scheme, the electrostatic removal device is arranged between the first end and the second end, that is, in the direction from the first end to the second end, the electrostatic removal device and the electrostatic generation device are arranged at the same position, the electrostatic removal device and the electrostatic generation device process the film material at the same time, and the electrostatic removal device can effectively avoid that after the film material is processed by the electrostatic removal device, the dust is re-adsorbed on the film material by electrostatic adsorption due to the re-generated static electricity of the film material in the movement process, and the adsorption effect of the electrostatic generation device on the dust on the film material is reduced.
[0010] In some optional embodiments, the electrostatic removal device is an ion wind knife or an ion fan.
[0011] The electrostatic removal device is arranged between the first end and the second end, and / or is arranged on the side away from the second end of the first end.
[0012] In some optional embodiments, the electrostatic removal device has an air inlet and an air outlet for air toward the film material, and the air inlet is provided with a filter screen.
[0013] In the technical scheme, by arranging the filter screen on the air inlet, the air sucked into the electrostatic removal device can be filtered, and the dust in the sucked air can be filtered.
[0014] In some optional embodiments, the adsorption surface is provided with an adhesive layer, and the side away from the adsorption surface of the adhesive layer is an adhesive surface with adhesion.
[0015] In the technical scheme, the adhesive layer is arranged on the adsorption surface, and the side away from the adsorption surface of the adhesive layer has adhesion, so that after the dust moves to the adsorption surface under the action of the electrostatic generation device, the dust is adsorbed on the adhesive surface, and even if the electrostatic generation device is turned off, the dust adsorbed on the adhesive surface is not easy to fall off.
[0016] In some optional embodiments, the electrostatic generation device includes oppositely arranged first and second plate bodies, the first plate body includes a first surface facing the second plate body, and the second plate body includes a second surface facing the first plate body; and the adsorption surface includes the first surface and the second surface.
[0017] In the technical scheme, the first surface of the first plate body and the second surface of the second plate body are oppositely arranged, and the first surface and the second surface can both have static electricity, so that the dust on the film material can be adsorbed from both opposite sides of the film material in the process of the film material moving from the first end to the second end between the first surface and the second surface, and the dust removal effect is better.
[0018] In some optional embodiments, in the direction along the first plate body and the second plate body, the electrostatic removal device is located between the first plate body and the second plate body.
[0019] In some optional embodiments, the electrostatic generating device comprises a ring structure, an inner side of the ring structure being configured to allow the film material to pass through; the adsorbing surface is an inner side surface of the ring structure; and the electrostatic removing device is an ion wind knife arranged outside the ring structure.
[0020] In the above technical solution, the adsorbing surface is an inner side surface of the ring structure, and the inner side of the ring structure is configured to allow the film material to pass through. Therefore, when the dust removing device is used, the film material can pass through the inner side of the ring structure, which can separate the dust outside the ring structure from the film material, and better adsorb the dust on the film material.
[0021] In a second aspect, the embodiments of the present application provide a production system, which comprises a first roller group and a second roller group, and the dust removing device provided in the first aspect; the adsorbing surface is located between the first roller group and the second roller group, the second end is arranged towards the second roller group, and the distance between the second end of the electrostatic generating device and the second roller group in the direction from the first end to the second end is not more than 200 mm. The production system is configured to send the film material from the first roller group to the second roller group, and the film material passes between the first surface and the second surface.
[0022] In the above embodiments, the film material passes between the first surface and the second surface, so that the first surface and the second surface can adsorb the dust on the film material from two opposite sides of the film material. Since the distance between the second end of the electrostatic generating device and the second roller group is not more than 200 mm, the film material can be timely processed by the second roller group after being adsorbed by the electrostatic generating device, so as to reduce the situation that the film material is re-stuck with dust after being processed by the electrostatic processing device.
[0023] In a third aspect, the embodiments of the present application provide a production system, which comprises a first roller group and a second roller group, and the dust removing device provided in the first aspect; the adsorbing surface is located between the first roller group and the second roller group, the second end is arranged towards the second roller group, and the distance between the second end of the electrostatic generating device and the second roller group in the direction from the first end to the second end is not more than 200 mm. The production system is configured to send the film material from the first roller group to the second roller group, and the film material passes through the inner side of the ring structure.
[0024] In the above technical solution, the film material passes from the inner side of the ring structure, and the adsorption surface is located on the inner side of the ring structure, so that the adsorption surface can better adsorb dust on the film material, and dust in the external environment can be separated from the film material in the ring structure to adapt to working conditions requiring extremely high cleanliness. Since the distance between the second end of the electrostatic generating device and the second roller group is not more than 200 mm, the film material can be timely treated by the second roller group after being adsorbed by the electrostatic generating device to reduce the case that the film material is re-stuck with dust after being treated by the electrostatic treatment device. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0026] Figure 1 The schematic diagram of the production system provided by the embodiments of the present application.
[0027] Legend: 110 - first roller group; 120 - second roller group; 121 - first hot press roller; 122 - second hot press roller; 200 - dust removal device; 210 - electrostatic generating device; 211 - first plate body; 212 - second plate body; 220 - electrostatic removal device; 300 - film material. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.
[0030] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0032] In addition, the terms "horizontal", "vertical", "overhanging", and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0034] The embodiments of the present application provide a production system for a production process that requires a film material to participate. Wherein, the film material in the present application refers to a film-shaped material that can be wound on a reel and conveyed through a roller in the production process.
[0035] The production system provided by the embodiments of the present application, as shown in Figure 1 The dust removal device 200 includes a frame and an electrostatic generating device 210 installed in the frame. The electrostatic generating device 210 has opposite first and second ends, and an adsorption surface between the first and second ends, and the adsorption surface can generate static electricity to produce adsorption effect on dust, that is, the electrostatic generating device 210 is configured such that the adsorption surface can have static electricity to adsorb dust of the film material 300 during movement of the film material 300 from the first end to the second end. The adsorption surface is located between the first roller group 110 and the second roller group 120.
[0036] In the production process of the production system provided in the embodiments of the present application, the production system can send the film material 300 from the first roller group 110 to the second roller group 120. Since the adsorption surface is located between the first roller group 110 and the second roller group 120, the film material 300 can move from the first end to the second end of the electrostatic generating device 210 and pass through the adsorption surface in the movement process, so as to realize the adsorption of the dust on the film material 300 by the electrostatic adsorption of the electrostatic generated by the adsorption surface. The passing of the film material 300 through the adsorption surface of the electrostatic generating device 210 does not mean that the film material 300 needs to contact the adsorption surface. In the implementation of the present application, the adsorption surface and the film material 300 can have a certain distance, which can be adjusted according to the actual situation, so as to make the adsorption surface have a better adsorption effect on the dust on the film material 300.
[0037] It can be seen that the production system and the dust removal device 200 provided in the present application use the electrostatic adsorption method to adsorb the dust on the surface of the film material 300. Therefore, in the dust removal process, the film material 300 will not be in contact, so as to avoid damaging the fragile surface of the film material 300.
[0038] Further, in some embodiments, the dust removal device 200 further comprises an electrostatic removal device 220 installed in the frame, which is used to remove the electrostatic of the film material 300 before the film material 300 reaches the second end of the electrostatic generating device 210. It is not difficult to understand that the electrostatic removal device 220 can remove the electrostatic effect, and the film material 300 can generate static electricity in the movement process due to friction and other reasons, which can have a certain adsorption effect on the dust. By removing the electrostatic of the film material 300, the adsorption effect of the film material 300 on the dust can be reduced, so that the dust on the film material 300 can be more easily adsorbed to the adsorption surface of the electrostatic generating device 210. The adsorption surface has a better adsorption effect on the dust on the film material 300 before the film material 300 leaves the second end of the electrostatic generating device 210. Therefore, removing the electrostatic of the film material 300 by the electrostatic removal device 220 before the film material 300 reaches the second end of the electrostatic generating device 210 can remove more dust adhered to the film material 300, thereby improving the quality of the product.
[0039] Further, the distance between the second end of the electrostatic generating device 210 and the second roller group 120 is not more than 200 mm; therefore, the film material 300 can be timely processed by the second roller group 120 after the film material 300 passes through the electrostatic generating device 210 to adsorb the dust, so as to reduce the situation that the film material 300 re-sticks dust after being processed by the electrostatic generating device 210.
[0040] In some embodiments, the static electricity removing device 220 is arranged between the first end and the second end of the static electricity generating device 210, so that the static electricity removing device 220 removes the static electricity of the film material 300 before the film material 300 reaches the second end of the static electricity generating device 210.
[0041] In other embodiments, the static electricity removing device 220 can also be arranged before the first end of the static electricity generating device 210, for example, the static electricity removing device 220 is arranged on the side of the first end of the static electricity generating device 210 away from the second end. That is, in production, the film material 300 needs to pass through the static electricity removing device 220 first, and then pass through the first end and the second end of the static electricity generating device 210 in turn; in this embodiment, the film material 300 has been treated by the static electricity removing device 220 when it reaches the static electricity generating device 210, so the film material 300 has less adsorption force on dust, which can make the adsorption surface of the static electricity generating device 210 better adsorb the dust on the surface of the film material 300, thereby improving the quality of the product.
[0042] In some embodiments, the static electricity removing device 220 is an ion fan; in other embodiments, the static electricity removing device 220 is an ion air knife. The number of static electricity removing devices 220 can be one or more, and the static electricity removing devices 220 can be arranged between the first end and the second end or on the side of the first end away from the second end; the static electricity removing devices 220 can also be arranged on both the side of the first end away from the second end and between the first end and the second end.
[0043] In the above embodiments, the ion fan or the ion air knife is used as the static electricity removing device 220, which can be used in different working conditions, for example, the ion fan can be applied to a large range of applications for removing static electricity and blowing away the dust on the film material 300, and the ion air knife can be applied to a small range of applications for removing static electricity and more thoroughly blowing away the dust in the small range.
[0044] The static electricity removing device 220 has a high-voltage power supply, an electrode, and a fan. The principle of the static electricity removing device 220 for removing static electricity is that corona discharge is generated by the high-voltage power supply and the motor, so that a large number of positive and negative ions are formed by ionizing the air; these ions are uniformly dispersed into the air under the action of the fan, and neutralize the static electricity on the surface of the object, thereby removing the static electricity. The ion fan and the ion air knife are both common static electricity removing devices 220.
[0045] Further, in some embodiments, the static electricity removing device 220 has an air inlet and an air outlet for blowing air towards the film material 300, and the air inlet is provided with a filter screen. By arranging the filter screen on the air inlet, the air sucked into the static electricity removing device 220 can be filtered, thereby filtering the dust in the sucked air.
[0046] In some embodiments, the adsorbing surface of the electrostatic generating device 210 is further provided with an adhesive layer, and the side of the adhesive layer away from the adsorbing surface is an adhesive surface. The adhesive surface of the adhesive layer away from the adsorbing surface can stick dust, so that after the dust moves to the adsorbing surface under the action of the electrostatic generating device 210, the dust is adhered to the adhesive surface, and even if the electrostatic generating device 210 is turned off, the dust adhered to the adhesive surface is not easy to fall off. The adhesive layer can be a glue layer arranged on the adsorbing surface, or a sticky plate arranged on the adsorbing surface.
[0047] The working principle of the electrostatic generating device 210 is mainly based on the process of corona discharge. The core is to generate high voltage through high-voltage discharge, accumulate electric charge on the metal surface, and form corona discharge. The specific process includes the following steps: first, the high-voltage power supply provides sufficient voltage to make the electrostatic emitting rod emit negative ions or positive ions; second, when the electric charge accumulates to a certain extent on the metal surface, the metal surface will form an oxide film to separate the metal from the air; finally, when the high-voltage passes through the metal with the oxide film, the oxide film is negatively charged, and corona discharge is formed.
[0048] In some embodiments of the present application, as shown in Figure 1 The electrostatic generating device 210 includes a first plate body 211 and a second plate body 212 arranged opposite to each other, the first plate body 211 includes a first surface facing the second plate body 212, and the second plate body 212 includes a second surface facing the first plate body 211. The adsorbing surface in the electrostatic generating device 210 includes the first surface and the second surface; that is, during the working process of the electrostatic generating device 210, the first surface and the second surface are both electrostatic, so that the first surface and the second surface can both adsorb dust.
[0049] Further, in some embodiments, during the process that the film material 300 is sent from the first roller group 110 to the second roller group 120, the film material 300 passes between the first surface and the second surface, that is, one side of the film material 300 faces the first surface, and the other side faces the second surface, so that dust blown from the film material 300 can be adsorbed from both opposite sides of the film material 300, and the dust removal effect is better.
[0050] Further, as shown in Figure 1As shown, the electrostatic removal device 220 is located between the first plate body 211 and the second plate body 212 in the direction along the first plate body 211 and the second plate body 212. In this embodiment, the electrostatic removal device 220 processes the film material 300 between the first plate body 211 and the second plate body 212. After the electrostatic removal device 220 removes the static electricity of the film material 300, the dust originally adhered to the film material 300 can be better absorbed by the first plate body 211 and the second plate body 212 in time, and the positions of the first plate body 211 and the second plate body 212 can block external dust. The film material 300 processed by the electrostatic removal device 220 is also difficult to adhere to other dust. The dust removal device 200 provided by this embodiment has a simple structure and can simultaneously remove and collect dust in the case of multiple layers of film material 300.
[0051] In some other embodiments, the electrostatic generation device 210 includes a ring structure, and the inside of the ring structure is used for the film material 300 to pass through. The adsorption surface of the electrostatic generation device 210 is the inner side surface of the ring structure. Further, the inner side surface of the ring structure is a closed ring surface, such as a circular ring, which can better surround the film material 300 passing through the ring structure and separate the external dust from the film material 300 in the ring structure. This embodiment can be used in working conditions that require extremely high cleanliness.
[0052] Further, in order to facilitate the setting of the electrostatic removal device 220, the electrostatic removal device 220 can adopt an ion wind knife, and the ion wind knife is set outside the ring structure.
[0053] Embodiment 1
[0054] The embodiment of the present application provides a production system for battery proton membrane production, which comprises a first roller group 110 and a second roller group 120, and a dust removal device 200 arranged between the first roller group 110 and the second roller group 120. Figure 1 As shown, the electrostatic removal device 220 is located between the first plate body 211 and the second plate body 212 in the direction along the first plate body 211 and the second plate body 212. In this embodiment, the electrostatic removal device 220 processes the film material 300 between the first plate body 211 and the second plate body 212. After the electrostatic removal device 220 removes the static electricity of the film material 300, the dust originally adhered to the film material 300 can be better absorbed by the first plate body 211 and the second plate body 212 in time, and the positions of the first plate body 211 and the second plate body 212 can block external dust. The film material 300 processed by the electrostatic removal device 220 is also difficult to adhere to other dust. The dust removal device 200 provided by this embodiment has a simple structure and can simultaneously remove and collect dust in the case of multiple layers of film material 300.
[0055] The membrane material 300 includes a proton membrane in the middle and a first transfer film and a second transfer film on the upper and lower sides of the proton membrane respectively. The first transfer film and the second transfer film are respectively used to transfer the cathode catalyst layer and the anode catalyst layer on both sides of the proton membrane. The first roller group 110 includes three rollers respectively used to support the first transfer film, the second transfer film and the proton membrane. The second roller group 120 includes a first hot pressing roller 121 and a second hot pressing roller 122 arranged oppositely. The first hot pressing roller 121 and the second hot pressing roller 122 are used to heat and press the first transfer film, the proton membrane and the second transfer film adhered together, so as to form the cathode catalyst layer and the anode catalyst layer on the proton membrane.
[0056] In the working process of the production system in the embodiment, the electrostatic removal device 220 is used to remove the static electricity on the membrane material 300, so as to reduce the electrostatic adsorption of the membrane material 300 to the dust. The electrostatic removal device 220 can also blow the dust on the membrane material 300 away. The static electricity on the first surface and the second surface of the electrostatic generation device 210 can electrostatically adsorb the dust blown away from the membrane material 300, so as to reduce the dust blown away from falling on the membrane material 300 again, and can also adsorb the dust in the external environment, so as to reduce the dust in the environment from falling on the membrane material 300.
[0057] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A dust removal device characterized by comprising: The electrostatic removal device and the electrostatic generating device are arranged between the first end and the second end. The electrostatic generating device is configured to have electrostatic on the adsorption surface to adsorb dust on the film material during the movement of the film material from the first end to the second end. The electrostatic removal device is arranged between the first end and the second end.
2. The dust extraction device of claim 1, wherein The electrostatic removal device is an ion wind knife or an ion wind fan.
3. The dust extraction device of claim 1, wherein The electrostatic removal device is arranged between the first end and the second end, and / or is arranged on the side of the first end away from the second end. The electrostatic removal device has an air inlet provided with a filter screen and an air outlet for directing air towards the film material.
4. The dust extraction device of claim 1, wherein The adsorption surface is provided with an adhesive layer, and the side of the adhesive layer away from the adsorption surface is an adhesive surface.
5. The dust extraction device of any one of claims 1-4, wherein, The electrostatic generating device includes a first plate body and a second plate body arranged opposite to each other, the first plate body includes a first surface facing the second plate body, and the second plate body includes a second surface facing the first plate body; the adsorption surface includes the first surface and the second surface.
6. The dust extraction device of claim 5, wherein, The electrostatic removal device is arranged between the first plate body and the second plate body in the direction of the first plate body and the second plate body.
7. The dust extraction device of claim 6, wherein The electrostatic generating device includes a ring-shaped structure, the inner side of the ring-shaped structure is used for the film material to pass through; the adsorption surface is the inner side surface of the ring-shaped structure; and the electrostatic removal device is an ion wind knife arranged outside the ring-shaped structure.
8. The dust extraction device of claim 5, wherein, The production system includes a first roller group and a second roller group, and the dust removal device of claim 6 or 7; the adsorption surface is located between the first roller group and the second roller group, the second end is arranged towards the second roller group, and the distance between the second end of the electrostatic generating device and the second roller group in the direction from the first end to the second end is not more than 200 mm.
9. A production system, characterized by The production system is configured to send the film material from the first roller group to the second roller group, and the film material passes between the first surface and the second surface. The production system includes a first roller group and a second roller group, and the dust removal device of claim 8; the adsorption surface is located between the first roller group and the second roller group, the second end is arranged towards the second roller group, and the distance between the second end of the electrostatic generating device and the second roller group in the direction from the first end to the second end is not more than 200 mm.
10. A production system characterized by, The production system is configured to send the film material from the first roller group to the second roller group, and the film material passes through the inner side of the ring-shaped structure.