Liquid rolling roller assembly and carbon paper dewatering equipment

Abstract

The utility model belongs to the technical field of hydrogen fuel cell processing, and discloses a liquid rolling roller assembly and carbon paper dewatering equipment. The liquid pricking roller assembly comprises a mounting frame, a scraper and two liquid pricking rollers. The two liquid squeezing rollers are rotatably arranged on the mounting frame, the two liquid squeezing rollers are oppositely arranged in the radial direction so that carbon paper can penetrate through the two liquid squeezing rollers, and extrusion force is applied to the carbon paper; and the scrapers are arranged on the mounting frame, each liquid rolling roller is correspondingly provided with one scraper, and the scrapers can be in contact with the peripheral surfaces of the corresponding liquid rolling rollers so as to scrape pollutants on the peripheral surfaces of the liquid rolling rollers. When falling carbon chips on the carbon paper are adhered to the liquid pricking roller, the scraper arranged corresponding to the liquid pricking roller can scrape the carbon chips adhered to the liquid pricking roller, so that the carbon chips and other pollutants are prevented from being adhered to the liquid pricking roller for a long time to influence the quality of the carbon paper, and the quality of the hydrogen fuel cell is finally ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen fuel cell processing technical field especially relates to a liquid roller subassembly and carbon paper hydrophobic equipment. BACKGROUND

[0002] Hydrogen fuel cell is the chemical energy direct conversion into electric energy's power generation device, hydrogen fuel cell has the advantages of no pollution, no noise and high efficiency, is widely used in aerospace, automobile and aircraft etc. Field. In hydrogen fuel cell, carbon paper is generally needed to make anode catalytic layer.

[0003] In the process of making carbon paper, the carbon paper needs to be hydrophobic. In the hydrophobic process, the carbon paper is first transported to the hydrophobic liquid, and then the carbon paper is removed from the hydrophobic liquid after passing through the liquid roller group, and then transported to the drying box for drying.

[0004] In the related art, the liquid roller of the liquid roller group always adheres to the carbon dust. If the carbon dust adheres to the liquid roller, a part of the pollutants formed by the carbon dust will be attached to the carbon paper after hydrophobic with the rotation of the liquid roller, which will affect the carbon paper and ultimately affect the performance of the hydrogen fuel cell.

[0005] Therefore, a liquid roller assembly and carbon paper hydrophobic equipment are needed to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a liquid roller assembly and carbon paper hydrophobic equipment, which can avoid the pollutants falling from the carbon paper from adhering to the liquid roller for a long time, affecting the liquid effect of the liquid roller on the carbon paper.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The liquid roller assembly comprises:

[0009] A mounting frame;

[0010] Two liquid rollers, each rotatably arranged on the mounting frame, the two liquid rollers are arranged opposite in the radial direction, so that the carbon paper passes through the two liquid rollers, and the carbon paper has extrusion force;

[0011] A scraper is arranged on the mounting frame, and each liquid roller is provided with a scraper, and the scraper can contact the outer periphery of the corresponding liquid roller to remove the pollutants on the outer periphery of the liquid roller.

[0012] Optionally, the scraper is rotatably arranged on the mounting frame.

[0013] Optionally, the liquid-rolling roller assembly further comprises a scraper driving member, which is arranged on the mounting frame and in transmission connection with the scraper to drive the scraper to rotate.

[0014] Optionally, the scraper comprises:

[0015] a rod body arranged on the mounting frame;

[0016] a fixing member fixedly arranged on the rod body;

[0017] a blade;

[0018] a scraper pressing member, which presses the blade against the fixing member, and the blade is capable of contacting the outer circumferential surface of the corresponding liquid-rolling roller.

[0019] Optionally, at least one of the fixing member and the scraper pressing member is provided with a blade mounting and positioning groove.

[0020] Optionally, the liquid-rolling roller assembly further comprises a material receiving disc, which is arranged on the mounting frame and below the scraper.

[0021] Optionally, the material receiving disc comprises a disc body, which is provided with a carbon paper through hole, and a first retaining ring is arranged around the carbon paper through hole.

[0022] Optionally, the material receiving disc further comprises a second retaining ring, which is arranged around the disc body.

[0023] Optionally, the disc body is arranged to be inclined relative to a horizontal plane.

[0024] A carbon paper hydrophobic device comprises:

[0025] a hydrophobic tank assembly;

[0026] the liquid-rolling roller assembly described above, and the mounting frame of the liquid-rolling roller assembly is arranged at the outlet of the hydrophobic tank assembly.

[0027] The carbon paper hydrophobic device has the following beneficial effects:

[0028] When the liquid-rolling roller assembly works, the carbon paper passes between two liquid-rolling rollers, and the two liquid-rolling rollers can extrude the carbon paper to remove the excess hydrophobic liquid on the carbon paper. Each liquid-rolling roller is provided with a corresponding scraper, which can contact the outer circumferential surface of the corresponding liquid-rolling roller to scrape off the pollutants on the outer circumferential surface of the liquid-rolling roller. Thus, when the carbon powder adhering to the liquid-rolling roller falls off from the carbon paper, the scraper arranged corresponding to the liquid-rolling roller can scrape off the carbon powder adhering to the liquid-rolling roller, so as to avoid the carbon powder and other pollutants from adhering to the liquid-rolling roller for a long time and affecting the quality of the carbon paper, and finally ensure the quality of the hydrogen fuel cell.

[0029] The carbon paper hydrophobic device proposed in this utility model includes the above-mentioned liquid-binding roller assembly, which can prevent contaminants such as carbon dust from adhering to the liquid-binding roller for a long time and affecting the quality of the carbon paper, thus ensuring the quality of the hydrogen fuel cell. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0031] Figure 1 This is a partial structural schematic diagram of the carbon paper hydrophobic device provided in this embodiment of the utility model;

[0032] Figure 2 This is a cross-sectional structural schematic diagram of the liquid-receiving roller assembly provided in this embodiment of the utility model;

[0033] Figure 3 yes Figure 2 A schematic diagram of the receiving tray from another perspective;

[0034] Figure 4 yes Figure 2 Enlarged view of point A in the middle;

[0035] Figure 5 This is a schematic diagram of the scraper being installed on the scraper drive component according to an embodiment of the present invention;

[0036] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0037] Figure 7 yes Figure 5 A schematic diagram of the decomposed structure;

[0038] Figure 8 yes Figure 7 Enlarged view of point C in the middle.

[0039] In the picture:

[0040] 100. Carbon paper;

[0041] 10. Drainage tank assembly; 101. Drainage tank; 1011. Drainage tank inlet; 1012. Drainage tank outlet; 102. Guide roller; 103. Pressure roller;

[0042] 1. Mounting bracket;

[0043] 2. Liquid-retaining roller;

[0044] 3. Scraper; 31. Rod; 32. Fixing component; 321. Blade mounting and positioning groove; 33. Blade; 34. Scraper clamping component;

[0045] 4. Scraper drive unit; 41. Connecting sleeve;

[0046] 5. Receiving tray; 51. Tray body; 511. Carbon paper through hole; 512. First retaining ring; 513. Discharge hole; 52. Second retaining ring. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature 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," and "under" the second feature includes the first feature 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.

[0050] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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" and "second" are only used for distinction in description and have no special meaning.

[0051] See Figure 1This embodiment provides a carbon paper hydrophobic device that can perform hydrophobic treatment on carbon paper.

[0052] Specifically, the carbon paper hydrophobic device includes a hydrophobic box assembly 10 and a liquid-binding roller assembly.

[0053] The condensate tank 101 of the condensate tank assembly 10 can hold condensate, and the upper cover of the condensate tank 101 is provided with a condensate tank inlet 1011 and a condensate tank outlet 1012. On the upper surface of the upper cover of the condensate tank 101, a guide roller 102 is provided at the condensate tank inlet 1011. Two pressure rollers 103 are provided inside the condensate tank 101. The liquid-binding roller assembly is located on the upper side of the upper cover of the condensate tank 101 and above the condensate tank outlet 1012.

[0054] The carbon paper hydrophobic device also includes a drying chamber assembly (not shown in the figure).

[0055] Carbon paper 100 enters the hydrophobic liquid in hydrophobic tank 101 via guide roller 102 and hydrophobic tank inlet 1011, and passes through the hydrophobic liquid along the underside of two pressure rollers 103 to ensure that the carbon paper can be fully wetted and absorb the hydrophobic liquid. Carbon paper 100 saturated with hydrophobic liquid exits hydrophobic tank 101 from hydrophobic tank outlet 1012. After excess hydrophobic liquid is removed from carbon paper 100 by the liquid-removing roller assembly, carbon paper 100 is then conveyed to drying chamber assembly.

[0056] When carbon paper 100 passes through the liquid slugging roller assembly, if carbon dust falling from the carbon paper 100 adheres to the liquid slugging roller assembly for a long time, it will contaminate the carbon paper 100. In addition, the carbon dust is difficult to clean after it dries. Moreover, over time, contaminants such as carbon dust will form protruding patches on the liquid slugging roller of the liquid slugging roller assembly. If the liquid slugging roller continues to be used to slug the carbon paper 100, it will lead to inconsistent hydrophobicity of the carbon paper 100, ultimately affecting the performance of the hydrogen fuel cell.

[0057] It should be noted that, in order to prevent carbon dust falling from the carbon paper 100 from adhering to the liquid-holding roller of the liquid-holding roller assembly, related technologies may apply a Teflon coating with anti-stick properties to the surface of the liquid-holding roller. However, even after applying the Teflon coating, it is not possible to completely prevent carbon dust from adhering to the liquid-holding roller.

[0058] To prevent carbon dust from falling off the carbon paper 100 and causing contamination to the carbon paper 100 by adhering to the liquid-binding roller assembly for an extended period of time, in this embodiment, the liquid-binding roller assembly includes a mounting frame 1, a scraper 3, and two liquid-binding rollers 2.

[0059] Both liquid-binding rollers 2 are rotatably mounted on the mounting frame 1. The two liquid-binding rollers 2 are arranged opposite each other in the radial direction so that the carbon paper 100 passes through the two liquid-binding rollers 2 and exerts a squeezing force on the carbon paper 100.

[0060] Specifically, in order to ensure that the two liquid-binding rollers 2 exert pressure on the carbon paper 100, the two liquid-binding rollers 2 can be set in close contact (in this close contact state, it is preferable that there is no mutual pressure between the two liquid-binding rollers 2, and contact contact is sufficient to ensure that the carbon paper 100 can smoothly enter between the two liquid-binding rollers 2); or there is a gap between the two liquid-binding rollers 2, and the width of the gap is less than the thickness of the carbon paper 100. In this way, it can be ensured that the carbon paper 100 passes through the two liquid-binding rollers 2 quickly and smoothly, and that the two liquid-binding rollers 2 exert pressure on the carbon paper 100.

[0061] Optionally, the liquid-binding roller 2 is a steel roller.

[0062] When the carbon paper 100 passes between the two liquid-binding rollers 2, the two liquid-binding rollers 2 can squeeze the carbon paper 100 to remove excess hydrophobic liquid from the carbon paper 100.

[0063] The scraper 3 is installed on the mounting frame 1. Each liquid-removing roller 2 is provided with a corresponding scraper 3. The scraper 3 can contact the outer peripheral surface of its corresponding liquid-removing roller 2 to scrape off the contaminants on the outer peripheral surface of the liquid-removing roller 2.

[0064] Preferably, to save costs, each liquid roller 2 is provided with a corresponding scraper 3.

[0065] During operation, the carbon paper 100 passes between two liquid-binding rollers 2. The two rollers 2 squeeze the carbon paper 100, removing excess hydrophobic liquid. Each liquid-binding roller 2 is equipped with a corresponding scraper 3, which contacts the outer circumferential surface of its corresponding roller 2 to remove contaminants. Thus, when carbon dust falls from the carbon paper 100 and adheres to the liquid-binding roller 2, the corresponding scraper 3 can remove the dust, preventing it from adhering to the roller 2 for a long time and affecting the quality of the carbon paper 100, ultimately ensuring the quality of the hydrogen fuel cell.

[0066] See Figure 2 and Figure 3 In order to receive contaminants such as carbon scraps scraped off by the scraper 3, the liquid roller assembly also includes a receiving tray 5, which is set on the mounting frame 1 and located below the scraper 3.

[0067] Specifically, see Figure 3 The receiving tray 5 includes a tray body 51, on which a carbon paper through hole 511 is provided. A first retaining ring 512 is provided around the carbon paper through hole 511 on the tray body 51.

[0068] Specifically, the carbon paper via 511 is a narrow, elongated opening that is adapted to the cross-sectional shape of the carbon paper 100.

[0069] The carbon paper output from the condensate tank assembly 10 passes through the carbon paper through-hole 511 and then moves between the two liquid-binding rollers 2. The presence of the first retaining ring 512 can prevent contaminants such as carbon dust falling on the disc 51 from entering the carbon paper through-hole 511 and contaminating the un-liquid-binded carbon paper 100, and can also prevent contaminants such as carbon dust falling on the disc 51 from entering the carbon paper through-hole 511 and falling into the condensate tank assembly 10 from the condensate tank outlet 1012.

[0070] Furthermore, in order to prevent contaminants such as carbon dust that fall onto the disc 51 from leaving the disc 51 and causing contamination to other parts of the liquid roller assembly, in this embodiment, the receiving disc 5 also includes a second retaining ring 52, which is arranged circumferentially around the disc 51.

[0071] Preferably, the disc 51 is inclined relative to the horizontal plane. With this configuration, the carbon dust or other contaminants scraped off by the scraper 3 can accumulate at the lower end of the disc 51 under its own gravity, making it easier to collect the contaminants.

[0072] More preferably, a discharge hole 513 is provided at the lower end of the disc body 51, through which contaminants accumulated at the lower end of the disc body 51 can be discharged. Optionally, a collection box (not shown in the figure) is provided on the mounting frame 1 below the discharge hole 513, and the staff can periodically empty the contaminants collected in the collection box.

[0073] Optionally, in this embodiment, the receiving tray 5 is a sheet metal part, which is easy to process.

[0074] Optionally, the scraper 3 is rotatably mounted on the mounting bracket 1.

[0075] Specifically, when the liquid-removing roller assembly is in operation, the liquid-removing roller 2 rotates, and the scraper 3 contacts the corresponding liquid-removing roller 2 to ensure that the scraper 3 effectively removes contaminants from the outer surface of the liquid-removing roller 2.

[0076] When the scraper 3 needs to be replaced or repaired, the scraper 3 can be rotated to separate from the liquid-binding roller 2 to avoid the liquid-binding roller 2 interfering with the disassembly of the scraper 3.

[0077] Furthermore, in order to achieve the rotation of the scraper 3, in this embodiment, the liquid-retaining roller assembly also includes a scraper drive 4, which is disposed on the mounting bracket 1 and is connected to the scraper 3 in a transmission manner to drive the scraper 3 to rotate.

[0078] Optionally, in this embodiment, the scraper drive 4 is a rotary cylinder.

[0079] Specifically, see Figures 4-7 In this embodiment, the scraper 3 includes a rod 31, a fixing member 32, a blade 33, and a scraper pressing member 34.

[0080] Among them, the rod 31 is set on the mounting bracket 1.

[0081] The fastener 32 is fixedly mounted on the rod 31. Optionally, the side of the rod 31 is provided with a fastener mounting surface, and the fastener 32 is fixedly mounted on the fastener mounting surface.

[0082] The scraper clamp 34 presses the blade 33 onto the fixing member 32, and the blade 33 can contact the outer peripheral surface of its corresponding liquid-receiving roller 2.

[0083] The scraper 3 with the above structure can ensure that the blade 33 is stably installed on the rod 31, thereby ensuring that the blade 33 can stably scrape off contaminants such as carbon dust adhering to the liquid slugging roller 2, ensuring the liquid slugging effect and the quality of carbon paper 100, and thus ensuring the quality of hydrogen fuel cell.

[0084] Specifically, a scraper drive component 4 is provided at both ends of the rod 31, and both scraper drive components 4 are mounted on the mounting bracket 1. It can be understood that, in this case, the rod 31 is indirectly mounted on the mounting bracket 1 through the two scraper drive components 4. Furthermore, each scraper drive component 4 has a connecting sleeve 41 at its output end, and the free end of the rod 31 is fixedly connected to the connecting sleeve 41.

[0085] The fit between the blade 33 of the scraper 3 and the liquid-removing roller 2 can be adjusted by adjusting the pressure of the rotary cylinder.

[0086] Optionally, the blade 33 can be made of plastic; preferably PET plastic. Blades 33 made of this material will not damage the liquid-holding roller 2, have good wear resistance, and can stably adhere to the liquid-holding roller 2 under the drive of the rotary cylinder to remove contaminants from the surface of the liquid-holding roller 2.

[0087] Further, see Figure 7 and Figure 8 In order to ensure the accuracy of the installation position of the blade 33 on the rod 31, and thus ensure that the blade 33 can stably scrape off the contaminants on the liquid roller 2, in this embodiment, at least one of the fixing member 32 and the scraper pressing member 34 is provided with a blade installation positioning groove 321.

[0088] The blade mounting and positioning groove 321 can limit the installation position of the blade 33.

[0089] Specifically, in this embodiment, the fixing member 32 is provided with a blade mounting positioning groove 321, and the surface of the scraper clamping member 34 facing the blade 33 is flat. The depth of the blade mounting positioning groove 321 is less than the thickness of the blade 33, that is, only a portion of the blade 33 can be placed in the blade mounting positioning groove 321. The blade 33 is placed in the blade mounting positioning groove 321, and then the scraper clamping member 34 is locked to the surface of the fixing member 32 on which the blade 33 is mounted by the connecting member. The scraper clamping member 34 and the fixing member 32 together clamp the blade 33, thereby completing the installation of the blade 33. It can be understood that the depth of the blade mounting positioning groove 321 only needs to be slightly less than the thickness of the blade 33.

[0090] Of course, in other embodiments, a blade mounting and positioning groove 321 may be provided on the surface of the scraper pressing member 34 facing the blade 33, and the depth of the blade mounting and positioning groove 321 may be slightly less than the thickness of the blade 33; the surface of the fixing member 32 facing the blade 33 may be flat; or both the fixing member 32 and the scraper pressing member 34 may be provided with blade mounting and positioning grooves 321, and the sum of the thicknesses of the two blade mounting and positioning grooves 321 may be slightly less than the thickness of the blade 33.

[0091] For example, in this embodiment, the working process of the carbon paper hydrophobic device is as follows:

[0092] Carbon paper 100 enters the hydrophobic tank 101 through guide roller 102 and hydrophobic tank inlet 1011. Under the pressure of pressure roller 103, carbon paper 100 is completely immersed in hydrophobic liquid.

[0093] Subsequently, the carbon paper 100 moves between the two liquid-removing rollers 2 through the hydrophobic box outlet 1012 and the carbon paper through hole 511, where the two liquid-removing rollers 2 remove excess hydrophobic liquid from the carbon paper 100; at the same time, the rod 31 rotates around its own axis to drive the blade 33 to periodically remove contaminants such as carbon dust from the surface of the liquid-removing roller 2.

[0094] The carbon paper 100, after being soaked in the liquid, moves into the drying chamber assembly to complete the drying process.

[0095] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A liquid-receiving roller assembly, characterized in that, include: Mounting bracket (1); Two liquid-binding rollers (2) are rotatably mounted on the mounting frame (1). The two liquid-binding rollers (2) are arranged opposite each other in the radial direction so that the carbon paper (100) passes through the two liquid-binding rollers (2) and exerts a squeezing force on the carbon paper (100). A scraper (3) is provided on the mounting frame (1). Each liquid-removing roller (2) is provided with a corresponding scraper (3). The scraper (3) can contact the outer peripheral surface of its corresponding liquid-removing roller (2) to scrape off contaminants from the outer peripheral surface of the liquid-removing roller (2).

2. The liquid-receiving roller assembly according to claim 1, characterized in that, The scraper (3) is rotatably mounted on the mounting bracket (1).

3. The liquid-receiving roller assembly according to claim 2, characterized in that, The liquid-receiving roller assembly also includes a scraper drive (4), which is disposed on the mounting bracket (1) and is connected to the scraper (3) to drive the scraper (3) to rotate.

4. The liquid-receiving roller assembly according to claim 1, characterized in that, The scraper (3) includes: The rod (31) is mounted on the mounting frame (1); The fastener (32) is fixedly installed on the rod (31); Blade (33); The scraper press (34) presses the blade (33) onto the fixing member (32), and the blade (33) is able to contact the outer peripheral surface of its corresponding liquid roller (2).

5. The liquid-receiving roller assembly according to claim 4, characterized in that, At least one of the fixing member (32) and the scraper pressing member (34) is provided with a blade mounting positioning groove (321).

6. The liquid-receiving roller assembly according to any one of claims 1-5, characterized in that, The liquid-receiving roller assembly also includes a receiving tray (5), which is disposed on the mounting frame (1) and located below the scraper (3).

7. The liquid-receiving roller assembly according to claim 6, characterized in that, The receiving tray (5) includes a tray body (51), on which a carbon paper through hole (511) is provided, and a first retaining ring (512) is provided around the carbon paper through hole (511) on the tray body (51).

8. The liquid-receiving roller assembly according to claim 7, characterized in that, The receiving tray (5) also includes a second retaining ring (52), which is arranged around the circumference of the tray body (51).

9. The liquid-receiving roller assembly according to claim 7, characterized in that, The disc (51) is tilted relative to the horizontal plane.

10. A carbon paper hydrophobic device, characterized in that, include: Hydrophobic tank assembly (10); The liquid-retaining roller assembly as claimed in any one of claims 1-9, wherein the mounting bracket (1) of the liquid-retaining roller assembly is located at the outlet of the hydrophobic tank assembly (10).

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