CN112713279B

CN112713279B - Fuel cell catalyst slurry batch recovery equipment

Info

Publication number: CN112713279B
Application number: CN202011413096.6A
Authority: CN
Inventors: 张洪杰; 郝金凯; 邵志刚
Original assignee: Dalian Institute of Chemical Physics of CAS
Current assignee: Dalian Institute of Chemical Physics of CAS
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-11-05
Anticipated expiration: 2040-12-02
Also published as: CN112713279A

Abstract

The invention discloses a batch recovery device for fuel cell catalyst slurry, which comprises a dipping box capable of realizing batch soaking of carriers, wherein in the soaking process, a mixed solution is enabled to enter the dipping box and be recycled through a pipeline connecting system and a solution storage box, the cleaning work of a containing cavity can be realized through the arrangement of a water tank and a spray head, and meanwhile, cleaning water liquid can also be filtered and recycled through the pipeline connecting system; then, placing the soaked carriers on a platform in batches, and realizing batch scraping of catalyst slurry on the carriers through batch pressing of a pressing plate and batch displacement control of an aluminum alloy blade, and finally realizing storage of the catalyst slurry in a collecting barrel through an auxiliary collecting mechanism; the equipment can realize a series of processes of soaking, scraping and recovering, can realize batch impregnation and intelligent scraping, and has higher efficiency.

Description

Fuel cell catalyst slurry batch recovery equipment

Technical Field

The invention relates to the field of fuel cells, in particular to a batch recovery device for catalyst slurry of a fuel cell.

Background

Proton Exchange Membrane Fuel Cells (PEMFCs) are a new type of clean energy, and are widely regarded globally for their low pollution and even non-pollution properties. The core component of PEMFC, namely Membrane Electrode Assembly (MEA), is the main location where oxidation and reduction of fuel cells occur, and is the focus of research by researchers. The GDL method is to coat a catalyst on a proton exchange membrane to form ccm (catalyst coated membrane, which is a catalyst/proton exchange membrane module prepared by coating the catalyst on both sides of the proton exchange membrane in a fuel cell), and then combine the three together by a hot pressing technique to form a membrane electrode. Most of the GDL methods are prepared by adopting a pneumatic spraying method and an ultrasonic spraying method, and the catalyst solution is uniformly sprayed on the proton membrane under a certain environmental condition, so that the spraying repeatability, the stability and the product uniformity of the spraying technology are good. The morphology analysis of the membrane electrode shows that the membrane electrode surface is uniform and the particle dispersibility is good, and the microporous layer (MPL) and the Catalyst Layer (CL) are in a three-dimensional pore structure, which is beneficial to reducing the transmission resistance and forming an effective three-phase reaction zone.

But in the spraying process, hardware facilities such as clamps and the like need to be sprayed in an auxiliary mode according to the requirements of products. Therefore, the catalyst slurry is wasted, especially in the long-time spraying process, a large amount of catalyst is deposited around the auxiliary fixture, if the catalyst is directly scrubbed, the cost is higher, and the environment is polluted to a certain extent.

At present, equipment capable of completing catalyst slurry recovery processes in batches in the market is blank, researchers can only collect catalyst slurry in a mode of sequentially processing artificial single carriers at present, so that the efficiency of the recovery mode is seriously damaged, the recovery process of the catalyst slurry cannot be popularized and used in the field of fuel cells, and the advancing step of the field of fuel cells in China is influenced.

Disclosure of Invention

The invention aims to provide batch recovery equipment for fuel cell catalyst slurry, which has the advantages that the batch soaking and scraping treatment process for carriers can be realized, the working efficiency is improved, and the working pressure is reduced.

The technical purpose of the invention is realized by the following technical scheme:

firstly, the invention provides batch recovery equipment for fuel cell catalyst slurry, which comprises a frame body, wherein a dipping box is arranged on the frame body,

a cover body matched with the dipping box is arranged above the dipping box, a plurality of spray heads for spraying liquid into the dipping box are arranged on the cover body in an array manner, a solution storage box communicated with the dipping box and a water box communicated with each spray head are arranged at the bottom of the dipping box, and a pipeline connecting system for realizing the recycling of water liquid in the water box and a solvent in the solution storage box is arranged in the rack body;

platforms for placing carriers are fixedly arranged on the two sides of the impregnation box on the rack body, a lifting pressing plate acting on the carriers is arranged above the platforms, and the lifting of the pressing plate can be controlled by a transmission mechanism; a plurality of open grooves for exposing the carrier are formed in the pressing plate in an array manner;

an XY-axis linear sliding table with a driving motor is arranged above the frame body, a connecting plate is arranged above the XY-axis linear sliding table, a plurality of blades perpendicular to the platform are arranged between the connecting plate and the XY-axis linear sliding table, the blades are connected to the connecting plate in a sliding manner, and a micro cylinder for controlling the blades to move up and down is arranged on the connecting plate;

a material collecting barrel is arranged on the frame body and close to the platform, and an auxiliary material collecting mechanism for helping the catalyst slurry fall into the material collecting barrel is arranged on the material collecting barrel.

The invention is further configured to: two XY axle straight line slip tables are located the outside of two platforms on the frame body respectively.

The invention is further configured to: a plurality of detachable partition plates are arranged in the impregnation box, and cavities with openings for storing carriers are arranged in the partition plates; the containing cavities are respectively communicated with the solution storage box; the spray heads are used for respectively spraying liquid into the accommodating cavities.

The invention is further configured to: the quantity and the open slot quantity phase-match of blade, all be connected through connecting rod and miniature cylinder between the blade and realize the linkage, the cutting edge face of blade all is equipped with the passivation chamfer.

The invention is further configured to: the utility model discloses a quick-witted support, including frame body, supporting spring, backup pad, collecting bucket, supplementary mechanism of gathering materials, it is equipped with the rotor plate to be close to two platform departments on the frame body and rotate separately, the fixed supporting spring that is equipped with on the rotor plate, the last fixed backup pad that is equipped with of supporting spring, be equipped with in the rotor plate with the adsorbed electro-magnet of backup pad, the collecting bucket passes through spacing cross draw-in groove subassembly and installs in the backup pad, supplementary mechanism of gathering materials is including the fixed extension doctor-bar that sets up at the collecting bucket inner wall, extend the doctor-bar and can contradict with the lateral wall of blade passivation chamfer.

The invention is further configured to: the pipeline connecting system comprises a first water pump and a second water pump; one end of a first water pump is communicated with the solution storage box, the other end of the first water pump is respectively connected with the water inlets of the cavities through a connecting pipeline and a connecting branch pipe, the water outlet of each cavity is sequentially connected with the detachable filter element group and the electromagnetic directional valve through the connecting branch pipe and a loop connecting main pipe, and the electromagnetic directional valve is further connected with the water tank and the solution storage box through two loop branch pipes to form a loop; one end of the water pump II is communicated with the water tank, and the other end of the water pump II is respectively connected with each spray head through a connecting pipeline and a connecting branch pipe; and an electric control switch valve is arranged on the connecting branch pipe of each spray head and the connecting branch pipe of the inlet and the outlet of each accommodating cavity.

The invention is further configured to: the bottom of the pressing plate is provided with a plurality of bulges which realize point contact with the carrier.

The invention is further configured to: the platform is provided with wire frame marks corresponding to the shape and position of the opening groove on the pressure plate, the platform is positioned in the two wire frame marks for indicating the width, and a plurality of filter holes are arranged at positions far away from the bulge at the bottom of the pressure plate, namely the filter holes are staggered with the bulge at the bottom of the pressure plate; the filter holes are communicated with the filter element group through a connecting water pipe at the bottom of the platform.

The invention is further configured to: the cover body is connected to the frame body in a sliding mode, and the frame body is provided with a working cylinder for controlling the cover body to lift.

The invention is further configured to: all be equipped with detachable branch strip in the plastics baffle, be equipped with the storing groove that supplies the branch strip to deposit in the flooding case.

The invention is further configured to: the cover body is internally provided with a plurality of sealing plugs which are respectively embedded into the containing cavities in an array mode.

The invention is further configured to: the blade is an aluminum alloy blade; the partition board is a plastic partition board.

The invention is further configured to: and the frame body is provided with a PLC system control panel in signal connection with the pipeline connecting system, the electromagnet, the XY-axis linear sliding table, the micro cylinder and the working cylinder circuit.

In another aspect, the present invention provides a method for recovering a catalyst using the above apparatus, comprising the steps of:

(1) covering a carrier on the surface of a catalyst-loading auxiliary device by which the membrane electrode catalyst is loaded;

(2) preparing a mixed solution and storing the mixed solution in a solution storage box;

(3) after the catalyst loading work is finished, placing the carrier adhered with the catalyst slurry into a dipping box, controlling the cover body to descend to realize the sealing of the dipping box, and introducing the mixed solution in the step into the dipping box through a solution circulating pipeline so as to completely soak the carrier in the mixed solution;

(4) placing the soaked carriers on a platform in batches, and then enabling a pressing plate to descend and realize pressing of each carrier;

(5) through the control of a control panel of a plc system, a plurality of blades move to positions right above the initial edge of the carrier, catalyst slurry on the surface of the carrier is scraped, the catalyst slurry is scraped and adhered to the blade edge surfaces of the blades, and the catalyst slurry adhered to the blades falls into a material collecting barrel through blade coating to be collected;

(6) repeating the step (5) until the catalyst slurry on the surface of the carrier is scraped completely, and storing the mixed solution dripped on the carrier into a solution storage box after filtering in the blade coating process;

(7) after the catalyst slurry is recycled, the impregnating tank is sprayed and cleaned through the pipeline connecting system and the spray head in the water tank, and waste liquid flows into the water tank again after being filtered to be stored, so that the recycling of water liquid is realized.

In conclusion, the invention has the following beneficial effects:

1. the device comprises a dipping box capable of realizing batch dipping of carriers, wherein in the dipping process, mixed solution enters the dipping box through a pipeline connecting system and a solution storage box and can be recycled, a containing cavity can be cleaned through a water tank and a spray head, and cleaning water liquid can be filtered and recycled through the pipeline connecting system; then, placing the soaked carriers on a platform in batches, and realizing batch scraping of catalyst slurry on the carriers through batch pressing of a pressing plate and batch displacement control of an aluminum alloy blade, and finally realizing storage of the catalyst slurry in a collecting barrel through an auxiliary collecting mechanism; the equipment can realize a series of processes of soaking, scraping and recovering, can realize batch impregnation and intelligent scraping, and has higher efficiency;

2. the edge surface of the aluminum alloy blade is provided with a passivation chamfer, the aluminum alloy blade has enough scraping hardness to the carrier, and the passivation chamfer avoids the situation that the carrier is scratched and broken to cause carrier fragments to be mixed in the catalyst slurry;

3. the collecting barrel can be quickly mounted and dismounted on the supporting plate through the cross clamping groove assembly, the use is convenient, meanwhile, the collecting barrel can realize the rotation direction through the rotating plate, the direction can be conveniently changed according to the requirement when the collecting barrel is used by a worker, and the functionality is improved;

4. the device realizes independent feeding and independent cleaning of the mixed solution into the plurality of cavities through the pipeline connecting system, has higher controllability, and simultaneously reduces unnecessary waste of the mixed solution or water liquid;

5. the detachable filter element group is arranged in the loop connection main pipe of the pipeline connection system, so that the mixed solution and the water liquid are filtered in the backflow process, the reliable purity is ensured, and the service life of the mixed solution and the water liquid is prolonged;

6. the bottom of the pressing plate is provided with the protrusions, so that the pressing plate is in point contact with the carrier, the contact area is reduced on the premise that the pressing limit of the carrier is not influenced, meanwhile, due to the arrangement of the filter holes on the platform, the mixed liquid on the carrier can smoothly delay the dripping of the filter holes in the scraping process, and flows into the mixed solution storage box again after being filtered by the filter element group, and the waste of the solution is further reduced;

7. the cover body can be lifted through the working cylinder, the operation is convenient, the labor pressure of workers is reduced, and meanwhile, the sealing plug is arranged in the cover body, so that the sealing performance of the containing cavity is further improved when the carrier is soaked;

8. the structure of the detachable plastic partition plate is adopted in the dipping tank, so that the plastic partition plate can be conveniently detached from the dipping tank, the plastic partition plate can be conveniently and comprehensively cleaned, and meanwhile, the detachable partition strip is arranged in the plastic partition plate, so that the area of the plastic partition plate can be conveniently partitioned, and the soaking process of carriers with different types and sizes can be conveniently carried out;

9. the plc system is arranged on the equipment, the motion and the running track of each system and mechanism are intelligently controlled, and the equipment has high controllability and intelligence.

Drawings

FIG. 1 is a schematic view of the overall structure of the apparatus;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the device, and is also a schematic view of a sealing plug and a bump;

FIG. 4 is a schematic diagram of the connection of the pipe connection system in the present apparatus;

FIG. 5 is a schematic illustration of a wire frame mark on the platform and the filter holes therein in the apparatus;

FIG. 6 is an enlarged view of a portion of B in FIG. 3, also a schematic view of a blunted chamfer of an aluminum alloy blade;

FIG. 7 is a schematic view of the collector barrel and associated parts of the apparatus;

FIG. 8 is a schematic diagram of a method for coating a carrier on an auxiliary device.

In the figure: 1. a frame body; 1-1, rotating the plate; 1-2, supporting a spring; 1-3, a support plate; 1-4, a limiting cross block; 1-6, wireframe marking; 1-7, filtering holes; 1-8, a working cylinder; 2. a dipping tank; 2-1, a storage tank; 3. a plastic partition plate; 3-1, a cavity; 3-2, separating strips; 4. a cover body; 4-1, a spray head; 4-2, sealing plug; 5. a solution storage tank; 6. a water tank; 7. a pipeline connection system; 7-1, a first water pump; 7-2, a water pump II; 8. a platform; 8-1, a transmission motor; 8-2, pressing a plate; 8-2-1, open slot; 8-2-2, and bulges; 9. an aluminum alloy blade; 9-1, passivating and chamfering; 10. a connecting plate; 11. XY-axis linear sliding tables; 12. a micro cylinder; 13. a collecting barrel; 14. extending the wiper blade; 15. a PLC system control panel; 16. a carrier; 17. high temperature resistant adhesive tape; 18. and (5) auxiliary equipment.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

A fuel cell catalyst slurry batch recovery device is shown in figure 1 or 3, and comprises a frame body 1, wherein a dipping box 2 is arranged on the frame body 1, a cover body 4 for sealing the dipping box 2 and working cylinders 1-8 for controlling the lifting of the cover body 4 are arranged on the frame body 1 in a sliding manner; as shown in fig. 1 and 2, a plurality of detachable plastic partition plates 3 are arranged in the dipping tank 2 along the length direction thereof in an array manner, the plastic partition plates 3 can be arranged in the dipping tank 2 through structures such as a hoop or a limiting groove, and a containing cavity 3-1 for storing a carrier 16 is arranged in each plastic partition plate 3; in order to enhance the sealing performance of the carrier 16 when immersed in the cavity 3-1, a plurality of sealing plugs 4-2 are arranged in the bottom array in the cover 4, as shown in fig. 3; when the cover body 4 descends under the action of the working cylinder 1-8 to realize the integral sealing of the dipping box 2, each sealing plug 4-2 is embedded into the corresponding containing cavity 3-1 to realize the sealing of the containing cavity 3-1.

Meanwhile, as shown in fig. 3, a plurality of nozzles 4-1 for spraying liquid into the cavity 3-1 are further arranged on the cover 4 in an array manner, and the nozzles 4-1 respectively penetrate through the sealing plugs 4-2 and can extend into the cavities 3-1; as shown in fig. 1 and 2, a solution storage tank 5 communicated with each cavity 3-1 and a water tank 6 communicated with each spray head 4-1 are arranged at the bottom of the impregnation tank 2 on the frame body 1, and a pipeline connection system 7 for realizing recycling of water and liquid in the water tank 6 and a solvent in the solution storage tank 5 is arranged in the frame body 1.

As shown in fig. 3 and 4, the pipeline connecting system 7 includes a first water pump 7-1 and a second water pump 7-2, one end of the first water pump 7-1 is communicated with the solution storage tank 5, the other end is respectively connected with the water inlets of the respective cavities 3-1 through a connecting pipeline and a connecting branch pipe, one end of the second water pump 7-2 is communicated with the water tank 6, the other end is connected with the respective nozzles 4-1 through a connecting pipeline and a connecting branch pipe, the water pump I7-1 and the water pump II 7-2 realize the material feeding work into the cavity 3-1 and the spray head 4-1, the water outlet of each cavity 3-1 is connected with the loop connecting header pipe through the connecting branch pipe and then sequentially connected with the detachable filter element group and the electromagnetic directional valve, and the electromagnetic directional valve is connected with the water tank 6 and the solution storage tank 5 through the two loop branch pipes to form a loop; meanwhile, an electric control switch valve is arranged on the connecting branch pipe of each spray head 4-1 and the connecting branch pipes of the inlet and the outlet of each cavity 3-1.

As shown in fig. 4, the pipe connection system 7 is implemented as: opening an electric control switch valve on a water inlet of a cavity 3-1 to be used, closing the electric control switch valve on a water outlet, pumping a mixed solution in a solution storage tank 5 into the corresponding cavity 3-1 by a first water pump 7-1, then closing the electric control switch valve to realize that a carrier 16 is soaked in the cavity 3-1, then opening the electric control switch valve on the water outlet of the cavity 3-1, filtering the mixed solution in the cavity 3-1 by a detachable filter element group, and then communicating the mixed solution with the solvent storage tank through an electromagnetic reversing valve to realize the recycling of the mixed solution; and then the electric control switch valve on the corresponding spray head 4-1 is opened, water liquid in the water tank 6 is pumped into the spray head 4-1 through the water pump II 7-2, so that the water spraying cleaning of the cavity 3-1 is realized, and the water liquid in the cavity 3-1 is communicated with the water tank 6 after being filtered by the detachable filter element group and reversed by the electromagnetic reversing valve after being opened through the electric control switch valve on the water outlet of the cavity 3-1, so that the storage and the recycling of the water liquid are realized.

As shown in fig. 1 and 3, platforms 8 for placing carriers 16 are fixedly arranged on the two sides of the impregnation tank 2 on the frame body 1, square pressing plates 8-2 which are controlled to lift by a transmission mechanism and act on the carriers 16 are arranged on the platforms 8, a plurality of open slots 8-2-1 for exposing the carriers 16 are uniformly arranged on the pressing plates 8-2 in an array manner along the length and width directions, the pressing plates 8-2 are customized pressing plates 8-2, suitable open slots 8-2-1 can be designed in advance according to the sizes of products, and when products with different sizes are used, the products can be detached from the equipment; the transmission mechanism can adopt a transmission system of a transmission motor 8-1 and a gear set, and has higher transmission stability; meanwhile, as shown in fig. 1 and 3, the bottom array of the pressing plate 8-2 is provided with a plurality of protrusions 8-2-2 for achieving point contact with the carrier 16 to reduce the contact area with the carrier 16; moreover, as shown in fig. 5, a erasable marker pen can be used to draw a wire frame mark 1-6 corresponding to the shape and position of an open slot 8-2-1 on a pressing plate 8-2 in advance on a platform 8, and a plurality of filtering holes 1-7 are arranged in two wire frame marks 1-6 showing the width and at positions far away from a bulge 8-2-2 at the bottom of the pressing plate 8-2; as shown in fig. 4, the bottom of the platform 8 is also connected to the filter element group through a connecting water pipe.

The arrangement is that the carrier 16 after the impregnation is finished can be accurately placed at the corresponding position on the platform 8 according to the positions of the wire frame marks 1-6, then the pressing plate 8-2 descends under the control of the transmission mechanism, the bulge 8-2-2 of the pressing plate is contacted with the carrier 16 to press the carrier 16, and meanwhile, the non-bulge 8-2-2 position of the platform 8 is provided with a plurality of filter holes 1-7, so that the mixed solution on the carrier 16 can enter the connecting water pipe through the filter holes 1-7 and then enter the mixed solution storage box 5 after being filtered by the detachable filter element group.

As shown in fig. 1 or 3, XY-axis linear sliding tables 11 with driving motors are arranged on the outer sides of the two platforms 8 on the frame body 1, connecting plates 10 are arranged on the XY-axis linear sliding tables 11, aluminum alloy blades 9 which are equal in number to the open grooves 8-2-1 on the pressing plate 8-2 and are perpendicular to the platforms 8 are arranged on the connecting plates 10, the aluminum alloy blades 9 are connected to the connecting plates 10 in a sliding manner, micro cylinders 12 for controlling the lifting movement of the aluminum alloy blades 9 are fixedly arranged on the connecting plates 10, and the aluminum alloy blades 9 are connected with the micro cylinders 12 through connecting rods to realize linkage, namely, the plurality of aluminum alloy blades 9 realize the lifting movement of linkage through the micro cylinders 12 and realize the sliding movement in the X/Y direction through the XY-axis linear sliding tables 11; in this embodiment, the edge faces of the aluminum alloy blades 9 are each provided with a blunt chamfer 9-1, as shown in fig. 6.

As shown in fig. 1, 3 and 7, rotating plates 1-1 are rotatably arranged on the frame body 1 near the two platforms 8, supporting springs 1-2 are fixedly arranged on the rotating plates 1-1 at ends far away from the frame body 1, supporting plates 1-3 are fixedly arranged on the supporting springs 1-2, electromagnets (not shown in the figure) adsorbed with the supporting plates 1-3 are arranged in the rotating plates 1-1, a material collecting barrel 13 is arranged on the supporting plates 1-3, a limiting cross groove is arranged at the bottom of the material collecting barrel 13, and meanwhile, limiting cross blocks 1-4 capable of being inserted into the limiting cross groove are arranged on the supporting plates 1-3, namely, the material collecting barrel 13 is arranged on the supporting plates 1-3 through a limiting cross clamping groove component so as to be rapidly assembled and disassembled.

As shown in fig. 7, an auxiliary collecting mechanism for helping the catalyst slurry fall into the collecting barrel 13 is disposed on the collecting barrel 13, the auxiliary collecting mechanism includes an extending scraper 14 fixedly disposed on the inner wall of the collecting barrel 13, and the extending scraper 14 can abut against the sidewall of the passivation chamfer 9-1 of the aluminum alloy blade 9.

In this embodiment, as shown in fig. 1 or 3, in order to facilitate the overall operation control of the apparatus, a PLC system control panel 15 is disposed on the frame body 1 of the apparatus and is in signal connection with the pipeline connection system 7, the electromagnet, the XY axis linear sliding table 11, the micro cylinder 12, and the operating cylinders 1 to 8.

In a specific embodiment, the catalyst slurry batch recovery method adopting the equipment is as follows:

(1) covering a carrier 16 on the surface of auxiliary equipment such as a clamp, and coating the folded surface of the auxiliary equipment along the folded angle of the auxiliary equipment such as the clamp in a manner that a plurality of carriers 16 are connected in pairs, wherein the joints of the carriers 16 are bonded by high-temperature-resistant adhesive tapes 17 with the width of 3mm, as shown in fig. 8; the carrier 16 with a single large area is prevented from being folded and coated directly, so that the folding area of the carrier 16 for coating the auxiliary equipment is reduced, the integral flatness of each carrier 16 is ensured, and the carrier 16 can be shaped according to the shape and the size of the auxiliary equipment.

In the preparation process of the membrane electrode, most of the rest catalyst slurry can be smoothly accumulated on the surface of the carrier 161 except the effective catalyst slurry sprayed on the carrier 16.

(2) Preparing a special mixed solution and storing the mixed solution in a solution storage box 5; the mixed solution is a mixed solution of an alcohol solvent and a high-boiling-point organic solvent, wherein the alcohol solvent comprises one or more of isopropanol, normal propyl alcohol and ethanol, the high-boiling-point organic solvent comprises one or two of N-methyl pyrrolidone and N, N-dimethyl amide, the mixed solution is formed by mixing ethanol and N-methyl pyrrolidone, and the volume ratio of the ethanol to the N-methyl pyrrolidone is 2: 1.

(3) After the spraying operation is finished, the carriers 16 adhered with the catalyst slurry in batches are respectively placed in the containing cavities 3-1 of the plastic partition plates 3, the cover bodies 4 are controlled to descend to seal the containing cavities 3-1, and the mixed solution in the step (2) is introduced into the soaking treatment box through the solution circulating pipeline, so that the carriers 16 are completely soaked in the mixed solution, and the soaking time is about 24 hours.

(4) And (4) placing the carriers 16 soaked in the step (3) on the platform 8 in batch, wherein the carriers 16 can be directly placed in the wire frame marks 1-6 which are designed in advance on the platform 8 because the sizes of the carriers 16 are shaped, and then, lowering the press plate 8-2 to press the carriers 16.

(5) Through the control of a control panel of the plc system, the aluminum alloy blades 9 move in the X/Y direction through the XY-axis linear sliding table 11, and then the vertical movement of the micro cylinder 12 is controlled, so that the aluminum alloy blades 9 finally move to the position right above the starting edge of the carrier 16, and through a route set in the plc system in advance, each aluminum alloy blade 9 can conduct linear scraping work on the catalyst slurry on the surface of the carrier 16, and because the aluminum alloy blades 9 are provided with passivation chamfers 9-1, the damage phenomenon to the carrier 16 can be avoided.

After the aluminum alloy blade 9 is moved from the starting end to the end along the surface of the carrier 16, the catalyst slurry with a certain viscosity and mixed solution is scraped off and adhered to the blade face of the aluminum alloy blade 9.

In the process, the collecting barrel 13 is rotated to be positioned on one side of the platform 8 in advance, the plc system controls the electromagnet to work, the supporting spring 1-2 on the rotating plate 1-1 is in a completely compressed state, namely, the opening of the collecting barrel 13 is slightly lower than the bottom end of the cutting edge surface of the aluminum alloy blade 9, so that the aluminum alloy blade 9 can smoothly move to the position right above the collecting barrel 13 and be positioned in the storage space of the collecting barrel 13, and in the state, an auxiliary collecting mechanism in the collecting barrel 13 cannot cause interference on the aluminum alloy blade 9; then the collection barrel 13 rises after the electromagnet is powered off, at the moment, the extension scraping blade 14 of the auxiliary collection mechanism is just abutted against the side wall of the passivation chamfer 9-1 of the blade surface of the aluminum alloy blade 9, and in the process that the aluminum alloy blade 9 slides linearly to a position close to the platform 8, the catalyst slurry adhered to the passivation chamfer 9-1 of the aluminum alloy blade 9 can be scraped to fall into the collection barrel 13 under the action of the extension scraping blade 14 to be collected.

Finally, the aluminum alloy blade 9 moves to the position right above the initial edge of the carrier 16 again to scrape the catalyst slurry on the surface of the carrier 16 again, and the whole path is repeated until the catalyst slurry on the surface of the carrier 16 is scraped completely.

In the working process, the mixed solution dripped on the carrier 16 can be stored in the solution storage tank 5 of the solution circulation pipeline after passing through the pipeline and the filter element along the filter holes 1-7 on the platform 8.

After the catalyst slurry is recycled, the pipeline connecting system 7 is controlled again, so that water in the water tank 6 is sprayed and cleaned into the corresponding cavity 3-1 through the spray nozzle 4-1, carrier 16 scraps and catalyst slurry particles in the cavity 3-1 are mainly taken away, waste liquid passes through a water outlet of the cavity 3-1 and is filtered by the detachable filter element group and then flows into the water tank 6 again to be stored, and the water liquid is recycled.

In this embodiment, as shown in fig. 2, each plastic partition plate 3 is provided with a detachable partition strip 3-2, and the detachable partition strips 3-2 are in clearance fit with the plastic partition plates 3 in an insertion manner, so that when the plastic partition plates 3 are assembled and disassembled to replace carriers 16 with smaller sizes, the detachable partition strips 3-2 can be inserted into the plastic partition plates 3, so that two cavities 3-1 of each plastic partition plate 3 are formed, and more carriers 16 can be conveniently immersed in the cavities 3-1 and have a certain limiting effect; meanwhile, a storage groove 2-1 for storing the separation strip 3-2 is arranged in the impregnation box 2.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A fuel cell catalyst slurry batch recovery apparatus, characterized in that: the equipment comprises a frame body (1), wherein a dipping box (2) is arranged on the frame body (1);

a cover body (4) matched with the impregnation box (2) is arranged above the impregnation box (2), and a plurality of spray heads (4-1) for spraying liquid into the impregnation box (2) are arranged on the cover body (4) in an array manner;

a solution storage tank (5) communicated with the impregnation tank (2) and a water tank (6) communicated with each spray head (4-1) are arranged at the bottom of the impregnation tank (2), and a pipeline connecting system (7) for realizing the recycling of liquid in the water tank (6) and liquid in the solution storage tank (5) is arranged in the frame body (1);

platforms (8) are arranged on the two sides of the impregnation box (2) on the frame body (1), liftable press plates (8-2) are arranged above the platforms (8), and a plurality of open grooves (8-2-1) are arranged on the press plates (8-2) in an array manner;

an XY-axis linear sliding table (11) with a driving motor is arranged on the rack body (1), a connecting plate (10) is arranged above the XY-axis linear sliding table (11), a plurality of blades (9) perpendicular to the platform (8) are arranged between the connecting plate (10) and the XY-axis linear sliding table (11), the blades (9) are connected to the connecting plate (10) in a sliding mode, and a micro cylinder (12) for controlling the blades (9) to move up and down is arranged on the connecting plate (10);

a material collecting barrel (13) is arranged on the frame body (1) and close to the platform (8); and an auxiliary material collecting mechanism for assisting the catalyst slurry to fall into the material collecting barrel (13) is arranged on the material collecting barrel (13).

2. The fuel cell catalyst slurry batch recovery apparatus according to claim 1, characterized in that: a plurality of detachable partition plates (3) are arranged in the impregnation box (2), and cavities (3-1) with openings are arranged in the partition plates (3); the containing cavities (3-1) are respectively communicated with a solution storage box (5); the spray heads (4-1) are used for respectively spraying liquid into the accommodating cavities (3-1);

the cover body (4) is connected to the frame body (1) in a sliding manner, and the frame body (1) is provided with a working cylinder (1-8) for controlling the cover body (4) to lift; a plurality of sealing plugs (4-2) which are respectively embedded into the openings of the containing cavities (3-1) are arranged in the cover body (4) in an array mode.

3. The fuel cell catalyst slurry batch recovery apparatus according to claim 2, characterized in that: all be equipped with detachable branch strip (3-2) in baffle (3), be equipped with in flooding case (2) and supply the storage tank (2-1) that branch strip (3-2) deposited.

4. The fuel cell catalyst slurry batch recovery apparatus according to claim 1, characterized in that: the quantity and the open slot (8-2-1) quantity phase-match of blade (9), blade (9) all are connected through the connecting rod and are realized the linkage with miniature cylinder (12), the cutting edge face of blade (9) all is equipped with passivation chamfer (9-1).

5. The fuel cell catalyst slurry batch recovery apparatus according to claim 2, characterized in that: the improved multifunctional scraper is characterized in that a rotating plate (1-1) is arranged on the rack body (1) and is respectively rotated near two platforms (8), a supporting spring (1-2) is fixedly arranged on the rotating plate (1-1), a supporting plate (1-3) is fixedly arranged on the supporting spring (1-2), an electromagnet adsorbed with the supporting plate (1-3) is arranged in the rotating plate (1-1), a collecting barrel (13) is installed on the supporting plate (1-3) through a limiting cross clamping groove assembly, the auxiliary collecting mechanism comprises an extending scraper (14) arranged on the inner wall of the collecting barrel (13), and the extending scraper (14) can be abutted against the side wall of a passivation chamfer (9-1) of the blade (9).

6. The fuel cell catalyst slurry batch recovery apparatus according to claim 2, characterized in that: the pipeline connecting system (7) comprises a first water pump (7-1) and a second water pump (7-2); one end of a first water pump (7-1) is communicated with the solution storage box (5), the other end of the first water pump is respectively connected with the water inlets of the cavities (3-1) through a connecting pipeline and a connecting branch pipe, the water outlet of each cavity (3-1) is sequentially connected with the detachable filter element group and the electromagnetic reversing valve through the connecting branch pipe and a loop connecting header pipe, and then the electromagnetic reversing valve is respectively connected with the water tank (6) and the solution storage box (5) through two loop branch pipes to form a loop; one end of the second water pump (7-2) is communicated with the water tank (6), and the other end of the second water pump is respectively connected with each spray head (4-1) through a connecting pipeline and a connecting branch pipe; an electric control switch valve is arranged on the connecting branch pipe of each spray head (4-1) and the connecting branch pipes of the inlet and the outlet of each cavity (3-1).

7. The fuel cell catalyst slurry batch recovery apparatus according to claim 1, characterized in that: the bottom of the pressing plate (8-2) is provided with a plurality of bulges (8-2-2) in an array manner.

8. The fuel cell catalyst slurry batch recovery apparatus according to claim 1, characterized in that: a wire frame mark (1-6) corresponding to the shape and position of the open slot (8-2-1) is arranged on the platform (8), a plurality of filtering holes (1-7) are arranged at the wire frame mark (1-6), and the filtering holes (1-7) are mutually staggered with the bulges (8-2-2) at the bottom of the pressure plate (8-2); the filter holes (1-7) are communicated with the detachable filter element group through a connecting water pipe at the bottom of the platform (8).

9. The fuel cell catalyst slurry batch recovery apparatus according to claim 5, characterized in that: and the rack body (1) is provided with a PLC system control panel (15) which is in circuit signal connection with the pipeline connecting system (7), the electromagnet, the XY axis linear sliding table (11), the micro cylinder (12) and the working cylinder (1-8).