Membrane electrode surface impurity removing device

Abstract

The invention discloses a membrane electrode surface impurity removing device which comprises a bottom plate, a cleaning tank and a plurality of vertical rods, the plurality of vertical rods are uniformly arranged on the bottom plate, and the cleaning tank is arranged at the tops of the plurality of vertical rods; an electric heating pipe is arranged at the bottom of the cleaning tank, and an ultrasonic generator is arranged on the side face, close to the bottom plate, of the bottom of the cleaning tank; a temperature sensor is arranged on the inner side of the cleaning tank; a PLC (Programmable Logic Controller) is arranged on one side of the cleaning tank; the bottom of the cleaning tank is communicated with a drainage pipe; a fixing plate is arranged at the end, close to the vertical rod, of the outer side of the cleaning tank, and an electric telescopic rod is arranged on the fixing plate. A connecting plate is arranged at the end, away from the fixing plate, of the electric telescopic rod and connected with a containing frame. According to the structure, accurate temperature control can be achieved, damage to the membrane electrode due to improper temperature is avoided, meanwhile, the cavitation effect of ultrasonic waves is enhanced, the cleaning efficiency is high, and device displacement during cleaning operation can be prevented.

Description

Technical Field

[0001] This invention belongs to the field of battery technology, and in particular relates to a device for removing impurities from the surface of a membrane electrode. Background Technology

[0002] With the rapid development of fuel cell and water electrolysis hydrogen production technologies, membrane electrode assemblies (MEAs), as core components, directly affect the performance and service life of fuel cell stacks and electrolyzers through the effective removal of surface impurities.

[0003] In traditional membrane electrode surface impurity removal operations, ultrasonic cleaning, with its cavitation effect generating impact force and microjets, can indeed effectively remove particulate impurities and also has a certain ability to remove grease and water-soluble salt contaminants. However, in practical applications, ultrasonic cleaning has significant shortcomings: during the cleaning process, temperature control usually relies on the operator's experience, requiring manual adjustment of the heating device. The lack of a precise real-time monitoring and feedback mechanism leads to large temperature fluctuations in the cleaning solution, which may not only affect the effectiveness of the ultrasonic cavitation effect but also easily damage the membrane electrode material due to excessive temperature. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a membrane electrode surface impurity removal device, which aims to solve the problems of traditional membrane electrode surface impurity cleaning relying on manual experience to control temperature, lacking a precise real-time monitoring and feedback mechanism that affects the performance of ultrasonic cavitation effect, and being prone to damage to membrane electrode materials due to excessive temperature.

[0005] To achieve the above objectives, the present invention proposes the following technical solution: a membrane electrode surface impurity removal device, comprising a base plate, a cleaning tank, and several uprights, wherein the uprights are evenly arranged on the base plate, and the cleaning tank is disposed on top of the uprights; an electric heating tube is disposed at the bottom of the cleaning tank, and an ultrasonic generator is disposed on the side of the bottom of the cleaning tank near the base plate; a temperature sensor is disposed on the inner side of the cleaning tank; and a PLC controller is disposed on one side of the cleaning tank.

[0006] The bottom of the cleaning tank is connected to a drain pipe; a fixing plate is provided on the outer side of the cleaning tank near the upright, and an electric telescopic rod is provided on the fixing plate; a connecting plate is provided on the end of the electric telescopic rod away from the fixing plate, and the connecting plate is connected to the placement frame.

[0007] In a preferred embodiment, the ultrasonic generator, the electric heating tube, the temperature sensor, and the electric telescopic rod are each electrically connected to the PLC controller.

[0008] In a preferred embodiment, multiple ultrasonic generators are provided; the multiple ultrasonic generators are evenly arranged on the side of the bottom of the cleaning tank near the base plate.

[0009] In a preferred embodiment, the uprights are disposed at the end corners of the base plate, with each upright corresponding to one of the end corners.

[0010] In a preferred embodiment, the bottom of the cleaning tank is provided with a connecting hole, and the drain pipe is connected to the cleaning tank through the connecting hole; a valve is provided at the end of the drain pipe away from the cleaning tank.

[0011] In a preferred embodiment, the end of the connecting plate away from the electric telescopic rod is connected to the placement frame; the placement frame is a hollow placement frame.

[0012] In a preferred embodiment, each end corner of the side of the base plate away from the upright is provided with a roller, and the rollers are provided one-to-one with each end corner.

[0013] In a preferred embodiment, mounting plates are symmetrically arranged at both ends of the side of the base plate away from the upright; limit posts are symmetrically arranged on the inner sides of the two mounting plates; one end of each limit post is connected to one of the mounting plates, and the other end is connected to the other mounting plate.

[0014] In a preferred embodiment, a bidirectional lead screw is provided between the two limiting posts, one end of the bidirectional lead screw is connected to one of the mounting plates, and the other end is connected to the other mounting plate; a throttle is provided at one end of the bidirectional lead screw; the throttle is located near the outer side of the mounting plate.

[0015] In a preferred embodiment, the bidirectional lead screw is provided with a first sliding rod and a second sliding rod, which are symmetrically arranged; brake pads are symmetrically arranged on both the first sliding rod and the second sliding rod.

[0016] In a preferred embodiment, the bidirectional lead screw is threadedly connected to the first sliding rod and the second sliding rod respectively; the first sliding rod is slidably connected to the two limiting posts respectively; and the second sliding rod is slidably connected to the two limiting posts respectively.

[0017] Compared with the prior art, the technical solution of this invention has the following advantages: The structure of this application can monitor the temperature of the cleaning fluid in the cleaning tank in real time through a temperature sensor and feed the data back to the PLC controller. The PLC controller automatically adjusts the power of the electric heating tube according to the preset temperature range, thereby achieving precise temperature control and avoiding damage to the membrane electrode caused by improper temperature. Simultaneously, a suitable temperature improves the fluidity of the cleaning fluid, enhances the cavitation effect of the ultrasound, and improves cleaning efficiency. The PLC controller can preset and precisely control the cleaning time according to the type of membrane electrode and the type of impurities. For different situations such as stubborn particulate impurities and organic matter, different cleaning modes with different frequencies, power, and durations are adopted to ensure the best cleaning effect, overcoming the problems of poor cleaning effect or over-cleaning in traditional technologies.

[0018] Because the double-acting screw and the sliding rod are connected by threads, and the sliding rod and the limiting post are connected by sliding, by rotating the handle at one end of the double-acting screw, the rotation of the handle will drive the double-acting screw to rotate, causing the sliding rods on both sides of the double-acting screw to slide in opposite directions along the limiting post, so that the brake pads on the outside of the sliding rods are in close contact with the rollers, thereby achieving a stable fixation of the device and effectively preventing the device from shifting during cleaning operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a membrane electrode surface impurity removal device according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A top view schematic diagram of a portion of the structure of the membrane electrode surface impurity removal device;

[0022] Figure 3 for Figure 1 A side view of the membrane electrode surface impurity removal device;

[0023] Figure 4 for Figure 1 A bottom view of the structure of the membrane electrode surface impurity removal device. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention. Parameters involving numerical ranges can be implemented as long as they are within the range claimed in this application.

[0026] Specifically, such as Figures 1 to 4 As shown, the present invention proposes the following technical solution: a membrane electrode surface impurity removal device, comprising a base plate 10, a cleaning tank 20, and several uprights 30, wherein the uprights 30 are evenly arranged on the base plate 10, and the cleaning tank 20 is disposed on the top of the uprights 30; an electric heating tube 21 is disposed at the bottom of the cleaning tank 20, and an ultrasonic generator 22 is disposed on the side of the bottom of the cleaning tank 20 near the base plate 10; a temperature sensor 23 is disposed on the inner side of the cleaning tank 20; and a PLC controller 24 is disposed on one side of the cleaning tank 20.

[0027] The bottom of the cleaning tank 20 is connected to a drain pipe 40; a fixing plate 50 is provided on the outer side of the cleaning tank 20 near the upright 30, and an electric telescopic rod 60 is provided on the fixing plate 50; a connecting plate 70 is provided on the end of the electric telescopic rod 60 away from the fixing plate 50, and the connecting plate 70 is connected to the placement frame 80.

[0028] In a preferred embodiment, the ultrasonic generator 22, the electric heating tube 21, the temperature sensor 23, and the electric telescopic rod 60 are respectively electrically connected to the PLC controller 24.

[0029] In this application, the relative positions of the temperature sensor 23 and the PLC controller 24 can be set according to actual needs and are not particularly limited. Specifically, in this embodiment, the temperature sensor and the PLC controller are set on the same side of the cleaning tank, with the temperature sensor on top (i.e., the side away from the upright) and the PLC controller on the bottom (i.e., the side closer to the upright).

[0030] The temperature of the cleaning fluid in the cleaning tank is monitored in real time by a temperature sensor, and the data is fed back to the PLC controller. The PLC controller automatically adjusts the power of the electric heating tube according to the preset temperature range, thereby achieving precise temperature control and avoiding damage to the membrane electrode caused by improper temperature. At the same time, the appropriate temperature improves the fluidity of the cleaning fluid, enhances the cavitation effect of the ultrasound, and improves the cleaning efficiency.

[0031] In a preferred embodiment, multiple ultrasonic generators 22 are provided; the multiple ultrasonic generators 22 are evenly arranged on the side of the bottom of the cleaning tank 20 near the base plate 10. Specifically, in this embodiment, four ultrasonic generators 22 are provided, and the four ultrasonic generators 22 are evenly arranged. Each ultrasonic generator 22 is electrically connected to the PLC controller 24, which can effectively ensure the uniformity of ultrasonic waves.

[0032] In a preferred embodiment, the uprights 30 are disposed on the end corners of the base plate 10, with each upright 30 corresponding to one of the end corners. This arrangement effectively ensures the structural stability and aesthetics. In this application, four uprights are provided. The base plate 10, the cleaning tank 20, the uprights 30, and the fixing plate 50 are integrally formed, which facilitates assembly and disassembly and ensures a stable connection.

[0033] In a preferred embodiment, the bottom of the cleaning tank 20 is provided with a connecting hole 25, and the drain pipe 40 is connected to the cleaning tank 20 through the connecting hole 25; a valve 41 is provided at the end of the drain pipe 40 away from the cleaning tank 20.

[0034] In a preferred embodiment, the end of the connecting plate 70 furthest from the electric telescopic rod 60 is connected to the placement frame 80; the placement frame 80 is a hollow placement frame. In this embodiment, the side and bottom surfaces of the hollow placement frame are provided with multiple hollow holes, which are evenly distributed. The connecting plate 70 and the placement frame 80 are integrally formed, which facilitates assembly and disassembly and ensures a stable connection.

[0035] In a preferred embodiment, each end corner of the side of the base plate 10 away from the upright post 30 is provided with a roller 11, and the roller 11 is provided one-to-one with each end corner. The rollers facilitate the movement of the device.

[0036] In a preferred embodiment, mounting plates 12 are symmetrically arranged at both ends of the side of the base plate 10 away from the upright 30; limiting posts 13 are symmetrically arranged on the inner sides of the two mounting plates 12; one end of each limiting post 13 is connected to one of the mounting plates 12, and the other end is connected to the other mounting plate 12.

[0037] In a preferred embodiment, a bidirectional lead screw 14 is provided between the two limiting posts 13. One end of the bidirectional lead screw 14 is connected to one of the mounting plates 12, and the other end is connected to the other mounting plate 12. A throttle 141 is provided at one end of the bidirectional lead screw 14. The throttle 141 is located near the outer side of the mounting plate 12.

[0038] In a preferred embodiment, the bidirectional lead screw 14 is provided with a first sliding rod 15 and a second sliding rod 16, which are symmetrically arranged; brake pads 17 are symmetrically arranged on both the first sliding rod 15 and the second sliding rod 16.

[0039] In a preferred embodiment, the bidirectional lead screw 14 is threadedly connected to the first sliding rod 15 and the second sliding rod 16 respectively; the first sliding rod 15 is slidably connected to the two limiting posts 13 respectively; and the second sliding rod 16 is slidably connected to the two limiting posts 13 respectively.

[0040] Because the double-acting screw and the sliding rod are connected by threads, and the sliding rod and the limiting post are connected by sliding, by rotating the handle at one end of the double-acting screw, the rotation of the handle will drive the double-acting screw to rotate, causing the sliding rods on both sides of the double-acting screw to slide in opposite directions along the limiting post, so that the brake pads on the outside of the sliding rods are in close contact with the rollers, thereby achieving a stable fixation of the device and effectively preventing the device from shifting during cleaning operations.

[0041] When using the device of this application, firstly, the rollers symmetrically installed at the bottom of the base plate can flexibly move the device to a suitable working position. After reaching the designated position, the operator turns the handle at one end of the double-acting screw. Since the double-acting screw and the sliding rod are connected by threads, and the sliding rod is slidably connected to the limit post, the rotation of the handle will drive the double-acting screw to rotate, thereby driving the sliding rods on both sides to slide in opposite directions along the limit post, so that the brake pads on the outer side of the sliding rods are in close contact with the rollers, thereby achieving stable fixation of the equipment and preventing the equipment from shifting during cleaning operations.

[0042] Before cleaning, the membrane electrode is placed in the hollow placement frame. It is electrically connected to the PLC controller via an electric telescopic rod. The operator presets the operating program of the electric telescopic rod on the PLC controller. The PLC controller issues a command to start the electric telescopic rod. Its output end drives the connecting plate and the hollow placement frame to descend smoothly, accurately sending the membrane electrode into the cleaning solution in the cleaning tank, thus completing the feeding process.

[0043] During cleaning, the ultrasonic generators symmetrically installed at the bottom of the cleaning tank are activated under the control of the PLC controller. The PLC controller selects the appropriate ultrasonic operating frequency and power based on a preset program, combined with the membrane electrode type and impurity type. When the ultrasonic generators operate, the high-frequency mechanical vibrations they produce trigger a cavitation effect in the cleaning fluid. Countless tiny cavitation bubbles are generated and burst near the membrane electrode surface, generating powerful impact forces and micro-jet streams, effectively removing particulate impurities, grease, and water-soluble salts from the membrane electrode surface. Simultaneously, the electric heating elements inside the cleaning tank begin operation. Temperature sensors monitor the cleaning fluid temperature in real time and feed the data back to the PLC controller. The PLC controller compares the real-time temperature with the preset optimal operating temperature range and automatically adjusts the heating power of the electric heating elements based on the difference. If the temperature is below the set range, the PLC controller increases the power of the electric heating elements; if the temperature is above the set range, it decreases the power. This achieves precise control of the cleaning fluid temperature. A suitable temperature improves the fluidity of the cleaning fluid, further enhancing the ultrasonic cavitation effect and increasing cleaning efficiency, while simultaneously preventing damage to the membrane electrode due to improper temperature.

[0044] Once the preset cleaning time is reached, the PLC controller issues a command to stop the operation of the ultrasonic generator and electric heating tube. Subsequently, it controls the electric telescopic rod to start, driving the hollow placement frame to rise and smoothly remove the cleaned membrane electrode, completing the unloading process. After completion, the drain valve is opened, and the wastewater in the cleaning tank is discharged through the drain pipe under the action of gravity. After the drainage is completed, the valve is closed, and preparations can be made for the next cleaning operation, such as adding new cleaning solution.

[0045] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A device for removing impurities from the surface of a membrane electrode, characterized in that, The device includes a base plate, a cleaning tank, and several uprights. The uprights are evenly arranged on the base plate, and the cleaning tank is located on top of the uprights. An electric heating element is installed at the bottom of the cleaning tank, and an ultrasonic generator is installed on the side of the bottom of the cleaning tank near the base plate. A temperature sensor is installed on the inside of the cleaning tank, and a PLC controller is installed on one side of the cleaning tank. The bottom of the cleaning tank is connected to a drain pipe; a fixing plate is provided on the outer side of the cleaning tank near the upright, and an electric telescopic rod is provided on the fixing plate; a connecting plate is provided on the end of the electric telescopic rod away from the fixing plate, and the connecting plate is connected to the placement frame.

2. The membrane electrode surface impurity removal device according to claim 1, characterized in that, The ultrasonic generator, the electric heating tube, the temperature sensor, and the electric telescopic rod are all electrically connected to the PLC controller.

3. The membrane electrode surface impurity removal device according to claim 1, characterized in that, Multiple ultrasonic generators are provided; the multiple ultrasonic generators are evenly arranged on the side of the bottom of the cleaning tank near the bottom plate; The uprights are installed at the end corners of the base plate, and each upright corresponds to one end corner.

4. The membrane electrode surface impurity removal device according to claim 1, characterized in that, The bottom of the cleaning tank is provided with a connecting hole, and the drain pipe is connected to the cleaning tank through the connecting hole; a valve is provided at the end of the drain pipe away from the cleaning tank.

5. The membrane electrode surface impurity removal device according to claim 1, characterized in that, The end of the connecting plate away from the electric telescopic rod is connected to the placement frame; the placement frame is a hollow placement frame.

6. The membrane electrode surface impurity removal device according to claim 1, characterized in that, Rollers are provided at each end corner of the side of the base plate away from the upright, and the rollers are provided one-to-one with each end corner.

7. The membrane electrode surface impurity removal device according to claim 1, characterized in that, Mounting plates are symmetrically arranged at both ends of the base plate away from the upright; limit posts are symmetrically arranged on the inner sides of the two mounting plates; one end of each limit post is connected to one of the mounting plates, and the other end is connected to the other mounting plate.

8. The membrane electrode surface impurity removal device according to claim 7, characterized in that, A bidirectional lead screw is provided between the two limiting posts. One end of the bidirectional lead screw is connected to one of the mounting plates, and the other end is connected to the other mounting plate. A throttle is provided at one end of the bidirectional lead screw. The throttle is located near the outer side of the mounting plate.

9. The membrane electrode surface impurity removal device according to claim 8, characterized in that, The bidirectional lead screw is provided with a first sliding rod and a second sliding rod, which are symmetrically arranged; brake pads are symmetrically arranged on both the first sliding rod and the second sliding rod.

10. The membrane electrode surface impurity removal device according to claim 9, characterized in that, The bidirectional lead screw is threadedly connected to the first sliding rod and the second sliding rod respectively; the first sliding rod is slidably connected to the two limiting posts respectively; the second sliding rod is slidably connected to the two limiting posts respectively.

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