Purification device for fuel cell catalyst

Abstract

The invention relates to the technical field of fuel cell recovery, and discloses a purification device for a fuel cell catalyst, the device comprises a bottom plate and an outer box body fixedly mounted at the top of the bottom plate, a lower cylinder is fixedly mounted at the lower part in the outer box body, a purification and recovery assembly is arranged in the lower cylinder, a gathering assembly is arranged below a top cover, and the gathering assembly is arranged below the top cover. Spraying pipes are fixedly installed on the inner wall of the lower barrel body in parallel, by arranging the purifying and recycling assembly, cleaning liquid can be conveniently sprayed to a catalyst at intervals, the cylindrical groove can be supplemented with the cleaning liquid in time, interval contact cleaning of the cleaning liquid and the catalyst is achieved, and continuous large-amount contact of the cleaning liquid and the catalyst is avoided; the catalyst is gathered through the gathering assembly and the bent plate, the catalyst can make full contact with sprayed cleaning liquid conveniently, when the push plate and the bent plate are reset subsequently, the catalyst can be thrown away all around under the rotating centrifugal force, waste cleaning liquid in the catalyst can be discharged conveniently, and the contact time of the cleaning liquid and the catalyst is shortened.

Description

Technical Field

[0001] This invention relates to the field of fuel cell recycling technology, specifically to a purification device for fuel cell catalysts. Background Technology

[0002] In polymer solid electrolyte fuel cells (PEFC) and direct methanol fuel cells (DMFC), platinum (Pt) is used as a catalyst material. Platinum is a rare metal and a limited resource. Therefore, after the fuel cell is destroyed, the fuel cell catalyst needs to be recycled. During the recycling process, it needs to be cleaned. The purpose of catalyst cleaning is mainly to remove contaminants such as oil, carbon deposits, and metal ions from the catalyst surface and restore the catalyst's activity.

[0003] For example, a purification device for a fuel cell catalyst, as disclosed in announcement number CN209822783U, includes a housing with a door on one side, a feed inlet at the top, and several casters at the bottom. Inside the housing is a cleaning tank with a water outlet at one side of its bottom. At the top of the cleaning tank is a material placement box with several through holes. The material placement box is connected to the top of the housing via a lifting mechanism, and the cleaning tank is connected to the bottom of the housing via a second lifting mechanism. This device purifies the fuel cell catalyst, facilitating its recycling and reuse, and effectively conserving resources.

[0004] However, when chemically cleaning catalysts, a cleaning solution mixed with water is usually used. The existing cleaning method directly contacts the catalyst with the cleaning solution. When the concentration of the cleaning solution is too high, prolonged contact may lead to excessive corrosion of the catalyst surface, especially increasing the risk of corrosion to the metal substrate. On the other hand, when the concentration of the cleaning solution is insufficient, the impurities contained in the catalyst may not be completely removed, affecting the exposure of the active sites of the catalyst and the performance of subsequent catalytic treatment. Summary of the Invention

[0005] The purpose of this invention is to provide a purification device for fuel cell catalysts, in order to solve the problems that when the concentration of the cleaning solution is too high, prolonged contact may lead to excessive corrosion of the catalyst surface, while insufficient concentration may lead to incomplete removal of impurities contained in the catalyst, affecting the exposure of active sites of the catalyst and the performance of subsequent catalytic treatment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a purification device for fuel cell catalysts, comprising a base plate and an outer casing fixedly installed on the top of the base plate, wherein a top plate is fixedly installed on the top of the outer casing; Also includes: A lower cylinder is fixedly installed inside the lower part of the outer casing, and a purification and recycling component is installed inside the lower cylinder; The purification and recycling component includes a top cover, a gathering component is provided below the top cover, a symmetrically connected groove is provided on the lower inner side of the lower cylinder, and a spray pipe is fixedly installed parallel to the inner wall of the lower cylinder.

[0007] Preferably, a door is hinged to one side of the front of the outer casing; an electric push rod is fixedly installed inside the top plate; the output end of the electric push rod is fixedly connected to an upper plate; a drive motor is fixedly installed on the top of the upper plate; a central shaft is fixedly connected to the output end of the drive motor; the top cover is fixedly installed to the bottom end of the central shaft; an arc-shaped rack is fixedly connected to one side of the top of the top cover; a rotating shaft is symmetrically rotatably connected to the top of the lower cylinder; a lead screw is fixedly connected to the top of the rotating shaft; a torsion spring is sleeved on the outside of the rotating shaft; the top end of the torsion spring is fixedly connected to the lead screw; a cylindrical groove and a connecting pipe are opened in the inner wall of the lower cylinder; a piston is slidably installed inside the cylindrical groove; and an upper one-way valve is fixedly installed inside the connecting pipe.

[0008] Preferably, the bottom end of the torsion spring is fixedly connected to the lower cylinder, the top of the lead screw is fixedly connected to a gear, the gear meshes with the arc-shaped rack, a lower one-way valve is fixedly installed inside the connecting groove, and a moving plate is threadedly connected to the outside of the lead screw.

[0009] Preferably, a vertical rod is fixedly connected to the bottom of the movable plate, the vertical rod is slidably connected to the cylindrical groove, a fixing ring is fixedly connected to the middle of the inside of the vertical rod, the vertical rod passes through the fixing ring and is fixedly connected to the piston, and the vertical rod is slidably connected to the fixing ring.

[0010] Preferably, a spring is sleeved on the outer side of the vertical rod, and the two ends of the spring are fixedly connected to the piston and the fixed ring, respectively. The nozzle is connected to the connecting pipe, the connecting groove is connected to the cylindrical groove, and the cylindrical groove is also connected to the connecting pipe.

[0011] Preferably, the gathering component includes a material feeding mesh fixedly installed at the bottom of the top cover, an extrusion plate symmetrically fixedly connected to the upper inner wall of the lower cylinder, a top groove opened on the other side of the top of the top cover, a spring two fixedly connected to one side of the inside of the top groove, and a moving rod slidably connected inside the top groove.

[0012] Preferably, the movable rod is fixedly connected to the second spring, the top of the movable rod is fixedly connected to an inclined block, the inclined block is located above the top cover, the bottom of the movable rod is fixedly connected to a push plate, the push plate is in contact with the inner bottom surface of the feeding screen, and the outer side of the push plate is symmetrically fixedly connected to side blocks.

[0013] Preferably, a side shaft is rotatably connected to the bottom of the side block, a bending plate is fixedly connected to the bottom of the side shaft, a torsion spring II is sleeved on the outer side of the side shaft, the two ends of the torsion spring II are fixedly connected to the side block and the bending plate respectively, and a guide plate is symmetrically fixedly connected to the inner bottom surface of the feeding mesh cover, and the bending plate abuts against the guide plate.

[0014] Preferably, a drain pipe is symmetrically fixedly installed at the bottom of the lower cylinder, the drain pipe is connected to the interior of the lower cylinder, a baffle plate is symmetrically fixedly installed on the inner bottom surface of the lower cylinder, and a collection groove is symmetrically opened on the inner side of the lower cylinder, and a filter screen is fixedly installed at the bottom of the inside of the collection groove.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: By setting up a purification and recovery component, as the drive motor rotates the discharge screen, when the arc-shaped rack meshes with the gear, the piston presses down. Since the inside of the connecting pipe is filled with cleaning fluid, and with the action of the one-way valve, the piston squeezes the cleaning fluid in the cylindrical groove, causing the cleaning fluid in the connecting pipe to spray onto the catalyst inside the discharge screen. When the arc-shaped rack separates from the gear, the piston returns to its original position, and the cleaning fluid in the lower cylinder enters the cylindrical groove through the connecting groove and the lower one-way valve, facilitating timely replenishment of the cleaning fluid and maintaining the stability of the spray nozzle. This achieves intermittent contact cleaning between the cleaning fluid and the catalyst without causing continuous and excessive contact between the cleaning fluid and the catalyst. Furthermore, by setting up a convergence mechanism… In this assembly, while the arc-shaped rack and gear mesh, the pusher plate also pushes the catalyst towards the nozzle. As the pusher plate moves, the two bent plates move towards the center, facilitating catalyst aggregation and ensuring full contact between the catalyst and the sprayed cleaning fluid, reducing cleaning dead zones. Subsequently, as the arc-shaped rack and gear separate, the pusher plate retracts and resets, and the bent plates rotate. The catalyst, subjected to centrifugal force, is thrown outwards, facilitating the discharge of cleaning waste fluid from the catalyst and reducing the contact time between the cleaning fluid and the catalyst. This achieves catalyst cleaning and purification while minimizing corrosion caused by prolonged contact with the cleaning fluid, facilitating the recycling and reuse of the fuel cell catalyst. Details are as follows: 1. By setting up a purification and recovery component, the operator places the catalyst to be purified into the discharge screen and secures it to the top cover with bolts. Then, the electric push rod is activated, causing the upper plate and discharge screen to descend. Cleaning liquid is filled inside the lower cylinder and the connecting pipe. The cleaning liquid inside the lower cylinder flows into the cylindrical groove through the connecting trough. The discharge screen descends into the cleaning liquid, and the drive motor rotates the central shaft and top cover counterclockwise. The top cover rotates the discharge screen, facilitating the initial cleaning of the catalyst. At this time, large particles of impurities in the catalyst are separated and thrown out. The baffle plate blocks and guides large particles of impurities in the cleaning liquid, causing them to fall into the collection tank and be stored in the filter section, facilitating the separation of large particles and reducing the blockage of the subsequent drain pipe. Then, the electric push rod drives the discharge screen to rise, causing the arc-shaped rack and gear to... At this point, the drive motor rotates again, and the top cover drives the arc-shaped rack to rotate. When the arc-shaped rack meshes with the gear, the gear drives the lead screw and the rotating shaft to rotate. The rotating shaft acts on the torsion spring one, and the rotation of the lead screw causes the moving plate to descend. The moving plate drives the vertical rod and the piston to descend, and the piston stretches the spring one. The piston pushes the cleaning liquid below the connecting pipe through the upper one-way valve to the top of the connecting pipe, so that the original cleaning liquid above the connecting pipe is sprayed from the nozzle onto the catalyst in the discharge screen. When the arc-shaped rack separates from the gear, the torsion spring one assists the rotating shaft to rotate, and the spring one assists the piston to reset. The cleaning liquid in the lower cylinder enters the cylindrical groove through the connecting groove and the lower one-way valve, which facilitates timely replenishment of the cleaning liquid and maintains the stability of the spray from the nozzle. While achieving the cleaning and purification of the catalyst, it also reduces the corrosion caused by prolonged contact of the cleaning liquid, and facilitates the recycling and reuse of the fuel cell catalyst. 2. By setting up a gathering component, while the arc-shaped rack and gear mesh, the inclined surface of the inclined block is squeezed by the extrusion plate, which will drive the moving rod to move. The moving rod compresses the second spring and drives the push plate to move. The push plate squeezes the catalyst towards the nozzle. As the push plate moves, it drives the bending plate to move. The bending plate is guided by the guide plate and will deflect. The bending plate drives the side shaft to rotate. The side shaft acts on the second torsion spring. The two bending plates move towards the center to gather the catalyst, which facilitates full contact between the catalyst and the sprayed cleaning liquid and reduces cleaning dead angles. When the arc-shaped rack and gear separate, the push plate retracts and resets. The bending plate will also rotate. The catalyst will be thrown outward by the centrifugal force of rotation, which facilitates the discharge of cleaning waste liquid in the catalyst from the bottom of the discharge screen and also reduces the contact time between the cleaning liquid and the catalyst. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the lower cylinder structure of the present invention; Figure 3 This is a schematic cross-sectional view of the outer casing of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 6 For the present invention Figure 3 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the top cover structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point D; Figure 9 This is a schematic diagram of the arc-shaped rack structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point E; Figure 11 For the present invention Figure 9 Enlarged structural diagram at point F; Figure 12 This is a schematic cross-sectional view of the lower cylinder structure of the present invention.

[0017] In the diagram: 1. Base plate; 2. Outer casing; 3. Top plate; 4. Door; 5. Lower cylinder; 6. Purification and recovery assembly; 61. Top cover; 62. Arc-shaped rack; 63. Lead screw; 631. Rotating shaft; 64. Torsion spring one; 65. Gear; 66. Connecting groove; 67. Lower one-way valve; 68. Cylindrical groove; 69. Moving plate; 610. Vertical rod; 611. Piston; 612. Fixing ring; 613. Spring one; 614. Connecting pipe; 615. Upper one-way valve 616. Valve; 7. Nozzle; 8. Gathering assembly; 9. Discharge screen; 10. Extrusion plate; 11. Top groove; 12. Spring II; 13. Moving rod; 14. Inclined block; 15. Push plate; 16. Side block; 17. Side shaft; 18. Bending plate; 19. Torsion spring II; 20. Guide plate; 10. Electric push rod; 11. Upper plate; 12. Drive motor; 13. Central shaft; 14. Drain pipe; 15. Collection tank; 16. Filter screen; 17. Baffle plate. Detailed Implementation

[0018] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 - Figure 3The present invention provides a technical solution: a purification device for fuel cell catalyst, comprising a base plate 1 and an outer casing 2 fixedly installed on the top of the base plate 1, wherein a top plate 3 is fixedly installed on the top of the outer casing 2.

[0020] The lower cylinder 5 is fixedly installed inside the lower part of the outer casing 2, and the purification and recycling component 6 is installed inside the lower cylinder 5.

[0021] like Figure 3 - Figure 8 and Figure 12 As shown, the purification and recovery component 6 includes a top cover 61, and a symmetrically arranged connecting groove 66 on the lower inner side of the lower cylinder 5. A spray pipe 616 is fixedly installed parallel to the inner wall of the lower cylinder 5. The spray pipe 616 is used for subsequent intermittent spraying of cleaning liquid. The spray pipe 616 includes multiple sets arranged symmetrically, and no less than four sets. Each set of spray pipes 616 consists of three vertically arranged pipes.

[0022] A door 4 is hinged to one side of the front of the outer casing 2. An electric push rod 8 is fixedly installed inside the top plate 3. The telescopic end of the electric push rod 8 is fixedly connected to an upper plate 9. The upper plate 9 is located inside the outer casing 2. A drive motor 10 is fixedly installed on the top of the upper plate 9. A central shaft 11 is fixedly connected to the output end of the drive motor 10. The central shaft 11 is rotatably connected to the upper plate 9. The top cover 61 is fixedly installed to the bottom end of the central shaft 11. An arc-shaped rack 62 is fixedly connected to one side of the top of the top cover 61. A rotating shaft 631 is symmetrically rotatably connected to the top of the lower cylinder 5. A lead screw 63 is fixedly connected to the top of the rotating shaft 631. A torsion spring 64 is sleeved on the outside of the rotating shaft 631. The top of the torsion spring 64 is fixedly connected to the lead screw 63. A cylindrical groove 68 and a connecting pipe 614 are opened in the inner wall of the lower cylinder 5. A piston 611 is slidably installed inside the cylindrical groove 68. An upper one-way valve 615 is fixedly installed inside the connecting pipe 614.

[0023] The bottom end of the torsion spring 64 is fixedly connected to the lower cylinder 5. The torsion spring 64 assists the screw 63 in rotating and resetting, thereby facilitating the subsequent resetting of the vertical rod 610. The top of the screw 63 is fixedly connected to a gear 65, which meshes with the arc-shaped rack 62. A lower one-way valve 67 is fixedly installed inside the connecting groove 66. The lower one-way valve 67 facilitates the flow of cleaning fluid from inside the lower cylinder 5 into the connecting groove 66 and prevents the cleaning fluid in the connecting groove 66 from flowing back. A movable plate 69 is threadedly connected to the outside of the screw 63.

[0024] A vertical rod 610 is fixedly connected to the bottom of the movable plate 69. The vertical rod 610 is slidably connected to the cylindrical groove 68. A fixing ring 612 is fixedly connected to the middle of the inside of the vertical rod 610. The vertical rod 610 passes through the fixing ring 612 and is fixedly connected to the piston 611. The vertical rod 610 is slidably connected to the fixing ring 612.

[0025] A spring 613 is sleeved on the outside of the vertical rod 610. The two ends of the spring 613 are fixedly connected to the piston 611 and the fixing ring 612 respectively. The spring 613 is used to assist the piston 611 in resetting and rising. The nozzle 616 is connected to the connecting pipe 614. The connecting groove 66 is connected to the cylindrical groove 68. The cylindrical groove 68 is also connected to the connecting pipe 614.

[0026] A drain pipe 12 is symmetrically fixedly installed at the bottom of the lower cylinder 5. The drain pipe 12 is connected to the inside of the lower cylinder 5. A shut-off valve is installed on the outside of the drain pipe 12. The drain pipe 12 is used to discharge the cleaning waste liquid in the lower cylinder 5 after cleaning and purification. A baffle plate 15 is symmetrically fixedly installed on the inner bottom surface of the lower cylinder 5. A collection tank 13 is also symmetrically opened on the inner side of the lower cylinder 5. A filter screen part 14 is fixedly installed at the bottom inside the collection tank 13. The filter screen part 14 can be removed to facilitate the treatment of particulate impurities collected inside.

[0027] Example 1: As Figure 3 - Figure 8 and Figure 12 As shown, the operator places the catalyst to be purified into the discharge screen 71 and fixes it to the top cover 61 with bolts. Then, the electric push rod 8 is started, which drives the upper plate 9 and the discharge screen 71 to descend. The lower cylinder 5 is filled with cleaning liquid, and the connecting pipe 614 is also filled with cleaning liquid. The cleaning liquid inside the lower cylinder 5 flows into the cylindrical groove 68 through the connecting groove 66. The discharge screen 71 descends into the cleaning liquid. The drive motor 10 drives the central shaft 11 and the top cover 61 to rotate counterclockwise. The top cover 61 drives the discharge screen 71 to rotate, which facilitates the initial cleaning of the catalyst. This process lasts for ten to twenty minutes. At this time, large particles of impurities in the catalyst are separated and thrown out. The baffle plate 15 blocks and guides the large particles of impurities in the cleaning liquid, causing them to fall into the collection tank 13 and be stored in the filter section 14, which facilitates the separation of large particles of impurities and reduces the blockage of the subsequent drain pipe 12.

[0028] Next, the electric push rod 8 drives the discharge screen 71 to rise, making the arc-shaped rack 62 flush with the gear 65. At this time, the drive motor 10 rotates again, and the top cover 61 drives the arc-shaped rack 62 to rotate. When the arc-shaped rack 62 meshes with the gear 65, the gear 65 drives the lead screw 63 and the rotating shaft 631 to rotate. The rotating shaft 631 acts on the torsion spring 64. The rotation of the lead screw 63 causes the moving plate 69 to descend. The moving plate 69 drives the vertical rod 610 and the piston 611 to descend.

[0029] Piston 611 stretches spring 613, and piston 611 forces the cleaning fluid below the connecting pipe 614 through the upper one-way valve 615 to the top of the connecting pipe 614. This causes the original cleaning fluid above the connecting pipe 614 to be sprayed from the nozzle 616 onto the catalyst inside the discharge screen 71. When the arc-shaped rack 62 separates from the gear 65, torsion spring 64 assists the rotating shaft 631 to rotate, and spring 613 assists piston 611 to reset. The cleaning fluid in the lower cylinder 5 enters the cylindrical groove 68 through the connecting groove 66 and the lower one-way valve 67, which facilitates timely replenishment of the cleaning fluid and maintains the stability of the spray from the nozzle 616. The spray cleaning lasts for twenty to forty minutes. While achieving the cleaning and purification of the catalyst, it also reduces the corrosion caused by prolonged contact of the cleaning fluid, making it easier to recycle and reuse the fuel cell catalyst.

[0030] like Figure 3 and Figure 9 - Figure 11 As shown, a gathering component 7 is provided below the top cover 61. The gathering component 7 includes a material discharge screen 71 fixedly installed at the bottom of the top cover 61. The material discharge screen 71 is cylindrical and is installed to the top cover 61 by bolts. Extrusion plates 72 are symmetrically fixedly connected to the upper part of the inner wall of the lower cylinder 5. There are no fewer than four extrusion plates 72. A top groove 73 is provided on the other side of the top of the top cover 61. A spring 74 is fixedly connected to one side of the inside of the top groove 73. A moving rod 75 is slidably connected inside the top groove 73.

[0031] The moving rod 75 is fixedly connected to the second spring 74. The second spring 74 can assist the sliding of the moving rod 75 and the extrusion plate 72. The top of the moving rod 75 is fixedly connected to the inclined block 76, which is located above the top cover 61. The bottom of the moving rod 75 is fixedly connected to the push plate 77, which is in contact with the inner bottom surface of the discharge screen 71. The side wall and bottom surface of the discharge screen 71 are provided with through holes to facilitate the falling and discharge of cleaning liquid. The outer side of the push plate 77 is symmetrically fixedly connected to the side blocks 78.

[0032] A side shaft 79 is rotatably connected to the bottom of the side block 78. A bending plate 710 is fixedly connected to the bottom of the side shaft 79. A torsion spring 711 is sleeved on the outside of the side shaft 79. The two ends of the torsion spring 711 are fixedly connected to the side block 78 and the bending plate 710 respectively. The torsion spring 711 is used to assist the rotation of the bending plate 710, so that the cleaning waste liquid in the catalyst can be discharged from the bottom of the discharge screen 71, and the contact time between the cleaning liquid and the catalyst is reduced. A guide plate 712 is symmetrically fixedly connected to the inner bottom surface of the discharge screen 71, and the bending plate 710 abuts against the guide plate 712.

[0033] Example 2: Figure 9 - Figure 11As shown, while the arc-shaped rack 62 meshes with the gear 65, the inclined surface of the inclined block 76 is squeezed by the extrusion plate 72, which will drive the moving rod 75 to move. The moving rod 75 compresses the spring 74 and drives the push plate 77 to move. The push plate 77 squeezes the catalyst toward the nozzle 616. As the push plate 77 moves, it drives the bending plate 710 to move. The bending plate 710 will deflect under the guidance of the guide plate 712.

[0034] The bending plate 710 drives the side shaft 79 to rotate. The side shaft 79 acts on the second torsion spring 711. The two bending plates 710 move towards the center to gather the catalyst, which facilitates full contact between the catalyst and the sprayed cleaning liquid and reduces cleaning dead angles. At the same time as the arc-shaped rack 62 separates from the gear 65, the push plate 77 retracts and resets, and the bending plate 710 also rotates. The catalyst is subjected to centrifugal force and will be thrown to all sides, which facilitates the discharge of cleaning waste liquid in the catalyst from the bottom of the discharge screen 71 and also reduces the contact time between the cleaning liquid and the catalyst.

[0035] Working principle: When using this device, firstly, as... Figure 1 - Figure 12 As shown, the operator places the catalyst to be purified into the discharge screen 71, then activates the electric push rod 8, causing the discharge screen 71 to descend into the cleaning liquid. The drive motor 10 drives the central shaft 11 and the top cover 61 to rotate counterclockwise, facilitating initial cleaning of the catalyst. Next, the electric push rod 8 raises the discharge screen 71, making the arc-shaped rack 62 flush with the gear 65. When the arc-shaped rack 62 and gear 65 mesh, the piston 611 forces the cleaning liquid below the connecting pipe 614 through the upper one-way valve 615 to the top of the connecting pipe 614, causing the original cleaning liquid above the connecting pipe 614 to be sprayed from the nozzle 616 onto the catalyst inside the discharge screen 71. When the arc-shaped rack 62 separates from the gear 65, the cleaning liquid in the lower cylinder 5 enters the cylindrical groove 68 through the connecting groove 66 and the lower one-way valve 67, facilitating timely replenishment of the cleaning liquid and maintaining the stability of the spray from the nozzle 616. 5. Simultaneously with engagement, the inclined surface of the inclined block 76 is squeezed by the extrusion plate 72, which drives the moving rod 75 to move. The moving rod 75 compresses the second spring 74 and drives the push plate 77 to move. The push plate 77 squeezes the catalyst towards the nozzle 616. As the push plate 77 moves, it drives the bending plate 710 to move. The bending plate 710 is deflected by the guide plate 712. The bending plate 710 drives the side shaft 79 to rotate. The side shaft 79 acts on the second torsion spring 711. The two bending plates 710 move towards the center to gather the catalyst, which facilitates full contact between the catalyst and the sprayed cleaning liquid and reduces cleaning dead angles. When the arc-shaped rack 62 separates from the gear 65, the push plate 77 retracts and resets. The bending plate 710 also rotates. The catalyst is thrown outward by the centrifugal force of rotation, which facilitates the discharge of cleaning waste liquid from the bottom of the discharge screen 71 and reduces the contact time between the cleaning liquid and the catalyst.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A purification device for a fuel cell catalyst, comprising a base plate (1) and an outer casing (2) fixedly mounted on the top of the base plate (1), wherein a top plate (3) is fixedly mounted on the top of the outer casing (2). Its features are, Also includes: The lower cylinder (5) is fixedly installed inside the lower casing (2), and a purification and recycling component (6) is provided inside the lower cylinder (5). The purification and recycling component (6) includes a top cover (61), a gathering component (7) is provided below the top cover (61), a connecting groove (66) is symmetrically opened on the lower inner side of the lower cylinder (5), and a nozzle (616) is fixedly installed parallel to the inner wall of the lower cylinder (5).

2. The purification device for fuel cell catalyst according to claim 1, characterized in that: A door (4) is hinged to one side of the front of the outer casing (2). An electric push rod (8) is fixedly installed inside the top plate (3). An upper plate (9) is fixedly connected to the telescopic end of the electric push rod (8). A drive motor (10) is fixedly installed on the top of the upper plate (9). A central shaft (11) is fixedly connected to the output end of the drive motor (10). The bottom end of the top cover (61) is fixedly installed to the central shaft (11). An arc-shaped rack (62) is fixedly connected to one side of the top of the top cover (61). The lower cylinder... (5) has a symmetrical rotating shaft (631) at the top, and a lead screw (63) is fixedly connected to the top of the shaft (631). A torsion spring (64) is sleeved on the outside of the shaft (631). The top of the torsion spring (64) is fixedly connected to the lead screw (63). A cylindrical groove (68) and a connecting pipe (614) are provided in the inner wall of the lower cylinder (5). A piston (611) is slidably installed inside the cylindrical groove (68). An upper one-way valve (615) is fixedly installed inside the connecting pipe (614).

3. A purification device for fuel cell catalysts according to claim 2, characterized in that: The bottom end of the torsion spring (64) is fixedly connected to the lower cylinder (5), the top of the lead screw (63) is fixedly connected to a gear (65), the gear (65) meshes with the arc rack (62), the lower one-way valve (67) is fixedly installed inside the connecting groove (66), and the outer side of the lead screw (63) is threadedly connected to a moving plate (69).

4. A purification device for fuel cell catalyst according to claim 3, characterized in that: The bottom of the movable plate (69) is fixedly connected to a vertical rod (610), the vertical rod (610) is slidably connected to the cylindrical groove (68), a fixing ring (612) is fixedly connected to the inside of the vertical rod (610), the vertical rod (610) passes through the fixing ring (612) and is fixedly connected to the piston (611), and the vertical rod (610) is slidably connected to the fixing ring (612).

5. A purification device for a fuel cell catalyst according to claim 4, characterized in that: A spring (613) is sleeved on the outside of the vertical rod (610). The two ends of the spring (613) are fixedly connected to the piston (611) and the fixing ring (612) respectively. The nozzle (616) is connected to the connecting pipe (614). The connecting groove (66) is connected to the cylindrical groove (68). The cylindrical groove (68) is also connected to the connecting pipe (614).

6. A purification device for fuel cell catalyst according to claim 1, characterized in that: The gathering component (7) includes a material feeding net cover (71) fixedly installed at the bottom of the top cover (61), and an extrusion plate (72) symmetrically fixedly connected above the inner wall of the lower cylinder (5). A top groove (73) is provided on the other side of the top of the top cover (61). A spring (74) is fixedly connected to one side of the inside of the top groove (73), and a moving rod (75) is slidably connected inside the top groove (73).

7. A purification device for a fuel cell catalyst according to claim 6, characterized in that: The movable rod (75) is fixedly connected to the second spring (74). The top of the movable rod (75) is fixedly connected to an inclined block (76), which is located above the top cover (61). The bottom of the movable rod (75) is fixedly connected to a push plate (77), which is in contact with the inner bottom surface of the feeding screen (71). Side blocks (78) are symmetrically fixedly connected to the outer side of the push plate (77).

8. A purification device for a fuel cell catalyst according to claim 7, characterized in that: The bottom of the side block (78) is rotatably connected to a side shaft (79), and the bottom of the side shaft (79) is fixedly connected to a bending plate (710). A torsion spring (711) is sleeved on the outside of the side shaft (79). The two ends of the torsion spring (711) are fixedly connected to the side block (78) and the bending plate (710) respectively. The inner bottom surface of the feeding net cover (71) is symmetrically fixedly connected to a guide plate (712), and the bending plate (710) abuts against the guide plate (712).

9. A purification device for a fuel cell catalyst according to claim 1, characterized in that: The bottom of the lower cylinder (5) is symmetrically fixedly equipped with a drain pipe (12), which is connected to the interior of the lower cylinder (5). The bottom surface of the lower cylinder (5) is symmetrically fixedly equipped with a baffle plate (15). The inner side of the lower cylinder (5) is also symmetrically provided with a collection groove (13), and a filter screen part (14) is fixedly installed at the bottom of the inside of the collection groove (13).

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