CN110676467B - Air electrode production equipment - Google Patents

Abstract

The present invention provides an air electrode production apparatus, comprising: a first mixing unit; a second mixing unit; the first spraying unit is used for spraying the catalyst layer slurry onto the first material; the second spraying unit is used for spraying the waterproof layer slurry onto a second material; the conveying unit is used for bearing and driving the sprayed first material and the sprayed second material to move; the vacuum filtration unit is used for carrying out vacuum filtration on the sprayed first material and the sprayed second material; the rolling forming unit is used for rolling and forming the first material and the second material subjected to vacuum filtration to form the air electrode slice; the first spraying port and the second spraying port are arranged above the mesh conveying belt and are spaced at a certain distance along the conveying direction of the mesh conveying belt. The air electrode production equipment has simple manufacturing process and high efficiency, can realize mechanized, continuous and large-scale production, and has good consistency of the prepared air electrode.

Description

Air electrode production equipment

technical field

The invention relates to the field of metal fuel cell production, in particular to an air electrode production equipment.

Background technique

Metal fuel cell is a kind of semi-fuel cell, which uses metal aluminum, lithium, magnesium, zinc, etc. as fuel, and generates electricity by redox reaction with oxygen in the air. It is also called metal-air battery. Compared with batteries, it has the advantages of high specific energy, safety and environmental protection, and low price.

In the redox reaction, metal aluminum, lithium, magnesium, zinc, etc. are the negative electrode of the battery, and oxygen in the air is the positive electrode of the battery. The air electrode provides the place for the oxygen reduction reaction, which is an important part of the metal fuel cell, which is mainly composed of a catalytic layer, a current collector layer, and a waterproof layer. The air electrode must be able to allow the oxygen in the air to easily penetrate into the battery to participate in the reaction, and at the same time must be sufficiently hydrophobic to ensure that the electrolyte does not seep out, and must also have good electrical conductivity so that the current can be exported.

Since metal fuel cells have not yet been widely commercialized, as for the production process of air electrodes, many air electrodes are currently mainly laminated by manual rolling or hot pressing of the catalytic layer, the current collector layer, and the waterproof layer. The entire production process requires a lot of manual operations, which makes it difficult to ensure the uniformity and consistency of materials, resulting in poor performance consistency of the final prepared air electrode. At the same time, the production process is complex and low in efficiency, making it difficult to scale production.

Therefore, how to provide an air electrode production equipment to solve the problem that the existing air electrodes cannot guarantee the uniformity and consistency of materials mainly through manual production, resulting in poor performance consistency of the final prepared air electrodes, as well as complex and efficient production processes. Low, it is necessary to carry out large-scale production problems.

SUMMARY OF THE INVENTION

In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an air electrode production equipment, which is used to solve the problem that the air electrode in the prior art cannot guarantee the uniformity and consistency of the material mainly by hand-made, thereby leading to the final preparation. The air electrode has poor performance consistency, complex production process, low efficiency, and difficulty in large-scale production.

In order to achieve the above-mentioned purpose and other related purposes, the present invention provides a kind of air electrode production equipment, and the described production equipment includes:

the first mixing unit, used for preparing the catalyst layer slurry;

The second mixing unit is used to prepare the slurry of the waterproof layer;

The first spraying unit includes a first pulling mechanism and a first spraying port for pulling a first material, wherein the first material includes a first current collecting layer;

The second spraying unit includes a second pulling mechanism and a second spraying port for pulling the second material, wherein the second material includes a second current collecting layer;

a conveying unit, including a mesh conveyor belt for carrying and driving the sprayed first material and the sprayed second material to move;

The vacuum suction filtration unit includes a vacuum suction filtration device, and the vacuum suction filtration device is arranged below the mesh conveyor belt for vacuuming the sprayed first material and the sprayed second material suction filtration;

A roll forming unit, arranged on the right side of the conveying unit, is used for roll forming the first material and the second material after the vacuum filtration to form an air electrode sheet;

The first spraying port and the second spraying port are arranged above the mesh conveyor belt and spaced a certain distance along the conveying direction of the mesh conveyor belt.

Preferably, the first spraying unit is located on the left side of the second spraying unit, and the first spraying port is used for spraying the catalyst layer slurry to the first spraying unit pulled by the first pulling mechanism On the material, the second spraying port is used for spraying the waterproof layer slurry onto the catalytic layer slurry filtered by the vacuum filtration unit.

Preferably, the second spraying unit is located on the left side of the first spraying unit, and the second spraying port is used for spraying the waterproof layer slurry to the second spraying unit pulled by the second pulling mechanism On the material, the first spraying port is used for spraying the catalytic layer slurry onto the waterproof layer slurry filtered by the vacuum filtration unit.

Preferably, the air electrode production equipment further includes a cutting unit, disposed on the right side of the roll forming unit, for cutting the air electrode sheet.

Further, the cutting unit cuts the air electrode sheet in a pneumatic manner.

Preferably, the first mixing unit includes a first stirring tank, a first impeller disposed in the first stirring tank, and a first discharge port disposed at the bottom of the first stirring tank. The impeller is driven to rotate by a motor to stir the catalyst layer slurry in the first stirring tank, and discharge the catalyst layer slurry through the first discharge port; the second mixing unit includes a second mixing unit. A stirring tank, a second impeller disposed in the second stirring tank, and a second discharge port disposed at the bottom of the second stirring tank, the second impeller is driven to rotate by a motor to stir the second stirring tank The waterproof layer slurry inside, and the waterproof layer slurry is discharged through the second outlet.

Preferably, the waterproof layer slurry includes a powdery waterproof layer material and a dispersant, and the catalyst layer slurry includes a powdery catalyst layer material and a dispersant.

Further, the waterproof layer material includes carbon powder, a binder and a pore-forming agent, the catalyst layer material includes carbon powder, a binder, a pore-forming agent and a catalyst, and the first current collecting layer includes foamed nickel, One of the group consisting of nickel mesh, foamed copper, copper mesh and stainless steel mesh, the second current collecting layer includes one of the group consisting of foamed nickel, nickel mesh, foamed copper, copper mesh and stainless steel mesh .

Preferably, the first pulling mechanism includes a first inner roller and a first outer roller, the first inner roller is used for pulling the current collecting layer, and the first outer roller is used for pulling the filter paper; The second pulling mechanism includes a second inner roller and a second outer roller, the second inner roller is used for pulling the current collecting layer, and the second outer roller is used for pulling the filter paper.

Preferably, the width of the first spray opening is the same as the width of the first material, and the width of the second spray opening is the same as the width of the second material.

Preferably, the vacuum filtering device includes a first vacuum filtering device and a second vacuum filtering device, and the first vacuum filtering device is arranged between the first spraying port and the second spraying port Below the mesh conveyor belt, the second vacuum filtering device is arranged below the mesh conveyor belt where the first material and the second material overlap.

Preferably, the vacuum filtration device further comprises a recovery tank for recovering the filtrate in the slurry of the catalytic layer and the slurry of the waterproof layer.

Preferably, the mesh size of the mesh conveyor belt is between 0.5 mm and 5 mm.

Preferably, the roll forming unit includes a pair of rollers, and the first material and the second material are extruded and formed through a gap between the rollers.

Preferably, the air electrode production equipment further includes a PLC control unit for real-time monitoring and control of the air electrode production equipment.

As mentioned above, the air electrode production equipment of the present invention has the following beneficial effects: from the preparation of the powder required for the air electrode to the formation of the air electrode sheet, the entire process is mechanized and continuous production, the production process is simple and High efficiency, mechanized, large-scale and continuous production can be realized, and manufacturing costs can be reduced; in addition, the automatic control unit further improves the automation level of the production equipment of the present invention; finally, the mechanized and continuous production improves the consistency of the performance of the air electrode sheet .

Description of drawings

FIG. 1 is a schematic perspective view of the air electrode production apparatus of the present invention.

FIG. 2 is a front view showing the air electrode production apparatus of the present invention.

FIG. 3 shows a left side view of the air electrode production apparatus of the present invention.

FIG. 4 shows a top view of the air electrode production apparatus of the present invention.

Component label description

1 The first mixing unit

2 Second mixing unit

31 The first pulling mechanism

311 First inner roller

312 First outer roller

32 First spray port

33 The first material

331 First collector layer

332 filter paper

41 The second pulling mechanism

411 Second inner roller

412 Second outer roller

42 Second spray port

43 Second material

431 Second collector layer

432 filter paper

5 Conveyor unit

51 mesh conveyor belt

6 Vacuum filtration unit

7 Roll forming unit

8 Cut off unit

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

See Figures 1 through 4. It should be noted that the drawings provided in this embodiment are only to illustrate the basic concept of the present invention in a schematic way, so the drawings only show the components related to the present invention rather than the number, shape and the number of components in actual implementation. For dimension drawing, the type, quantity and proportion of each component can be changed at will in actual implementation, and the component layout may also be more complicated.

As shown in Figure 1 to Figure 4, the present invention provides an air electrode production equipment, including:

The first mixing unit 1 is used to prepare the catalyst layer slurry;

The second mixing unit 2 is used for preparing the waterproof layer slurry;

The first spraying unit includes a first pulling mechanism 31 and a first spraying port 32 for pulling a first material 33, wherein the first material 33 includes a first current collecting layer 331;

The second spraying unit includes a second pulling mechanism 41 and a second spraying port 42 for pulling the second material 43, wherein the second material 43 includes a second current collecting layer 431;

The conveying unit 5 includes a mesh conveyor belt 51 for carrying and driving the sprayed first material 33 and the sprayed second material 43 to move;

The vacuum filtration unit 6 includes a vacuum filtration device, and the vacuum filtration device is arranged below the mesh conveyor belt for the sprayed first material 33 and the sprayed second material 43 Carry out vacuum filtration;

The roll forming unit 7 is arranged on the right side of the conveying unit, and is used to roll the first material 33 and the second material 43 after the vacuum filtration to form an air electrode sheet;

The first spraying port 32 and the second spraying port 42 are disposed above the mesh conveyor belt 51 and spaced a certain distance along the conveying direction of the mesh conveyor belt 51 .

As shown in FIG. 1, the catalyst layer slurry is prepared in the first mixing unit 1, and then the catalyst layer slurry is sent to the first spraying unit, preferably, a pump can be used to pump the catalyst layer slurry The catalyst layer slurry is sprayed to the first spraying port 32 of the first spraying unit, and the catalyst layer slurry is sprayed through the first spraying port 32 to all the places pulled by the first pulling mechanism 31 . On the first material 33, the sprayed first material 33 is then evacuated by a vacuum suction filtration device disposed under the mesh conveyor belt 51, so that the catalytic layer slurry is in the first material 33. There is no free flow on the material 33 to form the catalytic layer of the air electrode. The waterproof layer slurry is prepared in the second mixing unit 2, and then the waterproof layer slurry is transported to the second spraying unit, preferably, a pump can be used to pump the waterproof layer slurry to the The second spraying port 42 of the second spraying unit, along with the rightward transmission of the mesh conveyor belt 51, is transported to the catalytic layer slurry that cannot flow freely through the vacuum filtering device. When reaching the second spraying port 42, the second spraying port 42 sprays the waterproof layer slurry on the catalyst layer slurry that cannot flow freely, and the first material 33 and the The second materials 43 are overlapped and conveyed to the right along with the mesh conveyor belt 51 , and then the sprayed second materials 43 are pumped through the vacuum suction filter device arranged under the mesh conveyor belt 51 . Vacuum, so that the water-proof layer slurry cannot flow freely on the second material 43, so as to form the water-proof layer of the air electrode. Since the first spraying port 32 and the second spraying port 42 are disposed above the mesh conveyor belt 51 and spaced a certain distance along the conveying direction of the mesh conveyor belt 51, when the sprayed When the material 33 is delivered to the second spraying port 42 , the catalyst layer slurry can be filtered by the vacuum filter device so that it cannot flow freely, and when the first material 33 and the second material 43 are coincident After that, the vacuum filtering device mainly vacuum-filters the slurry of the waterproof layer so that it cannot flow freely. The first material 33, the second material 43, the catalyst layer slurry and the waterproof layer slurry after vacuum filtration enter the roll forming unit 7 from the mesh conveyor belt 51, And rolled to form an air electrode sheet.

In this embodiment, as shown in FIG. 1 , the catalytic layer of the air electrode is formed first, that is, the first spraying unit is arranged on the left side of the air electrode production equipment, and then the catalytic layer of the air electrode is formed. The waterproof layer, that is, the second spraying unit is arranged on the right side of the air electrode production equipment. In the present invention, the preparation sequence of the catalytic layer and the waterproof layer is not limited, that is, the first spraying unit can also be arranged on the right side of the air electrode production equipment, and the second spraying unit is arranged on the On the left side of the air electrode production equipment, at this time, the second spraying port 42 is used to spray the waterproof layer slurry on the second material 43 pulled by the second pulling mechanism 41, and the first A spraying port 32 is used for spraying the catalytic layer slurry on the waterproof layer slurry filtered by the vacuum filtration unit. The first spraying port 32 and the second spraying port 42 Between the distances, the vacuum filtration unit 6 suctions and filters the waterproof layer slurry so that it cannot flow freely. When the first material 33 and the second material 43 overlap, the vacuum filtration device The catalyst layer slurry is primarily vacuum filtered so that it cannot flow freely.

As shown in FIG. 2 and FIG. 4 , the air electrode production equipment further includes a cutting unit 8 , which is arranged on the right side of the roll forming unit 7 and is used for cutting the air electrode sheet. The air electrode rolled by the roll forming unit 7 enters the cutting unit 8 to cut the air electrode sheet. Preferably, the cutting unit 8 can adjust the cutting length to meet the requirements of preparing electrodes of different specifications. The cutting unit can adopt various cutting methods such as pneumatic, electric, hydraulic, etc. Preferably, the cutting unit 8 in this embodiment uses a pneumatic method to cut the air electrode sheet.

As an example, the first mixing unit 1 includes a first stirring tank, a first impeller disposed in the first stirring tank, and a first discharge port disposed at the bottom of the first stirring tank. An impeller is driven to rotate by a motor to stir the catalytic layer slurry in the first stirring tank, and discharge the catalytic layer slurry through the first discharge port; the second mixing unit 2 includes A second stirring tank, a second impeller disposed in the second stirring tank, and a second discharge port disposed at the bottom of the second stirring tank, the second impeller is driven to rotate by a motor to stir the second stirring tank The slurry of the waterproof layer in the tank is stirred, and the slurry of the waterproof layer is discharged through the second outlet. Through the rotation and stirring of the first impeller and the second impeller, the catalytic layer slurry and the waterproof layer slurry can be uniformly mixed without sedimentation.

As an example, the catalyst layer slurry is prepared by dispersing powdery catalytic layer material in a dispersant, and the waterproof layer slurry is prepared by dispersing powdery waterproof layer material in a dispersant. Preferably, the dispersant includes isoacetone.

As an example, the waterproof layer material includes carbon powder, a binder and a pore-forming agent, the catalyst layer material includes carbon powder, a binder, a pore-forming agent and a catalyst, and the first current collector layer 331 includes foamed nickel , one of nickel mesh, foamed copper, copper mesh and stainless steel mesh, and the second current collecting layer 431 includes foamed nickel, nickel mesh, foamed copper, copper mesh and stainless steel mesh. A sort of.

Preferably, as shown in FIG. 1 and FIG. 2 , the first pulling mechanism 31 includes a first inner roller 311 and a first outer roller 312, and the first inner roller 311 is used for pulling the first set. The flow layer 331, the first outer roller 312 is used for pulling the filter paper 332; the second pulling mechanism 41 includes a second inner roller 411 and a second outer roller 412, the second inner roller 411 is used for pulling The second current collecting layer 431 and the second outer roller 412 are used to pull the filter paper 432; the catalytic layer slurry is sprayed to the first inner roller 311 through the first spraying port 32 for pulling on the first current collecting layer 331 of The filter papers 332 and 432 need to have a certain strength to prevent leakage during the vacuum filtration process, and also need to have a good function of filtering the dispersant.

As an example, the width of the first spraying port 32 is consistent with the width of the first material 33, and the width of the second spraying port 42 is consistent with the width of the second material 43, which can ensure that the slurry is uniformly sprayed to on the material. Preferably, the first spraying port 32 and the second spraying port 42 are set to have an adjustable gap for adjusting the slurry discharge speed.

As an example, the vacuum filtering device includes a first vacuum filtering device and a second vacuum filtering device, and the first vacuum filtering device is disposed between the first spraying port 32 and the second spraying port 42 Below the mesh conveyor belt 51 in between, the second vacuum filtering device is arranged below the mesh conveyor belt 51 where the first material 33 and the second material 43 overlap. Since the materials to be vacuum filtered above the two conveyor belts 51 are different, different vacuum filtering devices, namely the first vacuum filtering device and the second vacuum filtering device, are respectively installed, so that the vacuum can be easily adjusted according to specific conditions. Suction filtration parameters to ensure the consistency of vacuum filtration effect. Preferably, the vacuum filtration device further comprises a recovery tank for recovering the filtrate in the slurry of the catalytic layer and the slurry of the waterproof layer for recovery and recycling.

As an example, the mesh size of the mesh conveyor belt 51 is between 0.5 mm and 5 mm.

As an example, the roll forming unit 7 includes a pair of rollers, and the first material 33 and the second material 43 are extruded and formed through the gap between the rollers. Preferably, the gap between the rollers is adjustable to ensure that the air electrode sheets formed by rolling meet different thickness requirements.

As an example, the air electrode production equipment further includes a PLC (Programmable Logic Controller, programmable logic controller) control unit for real-time monitoring and control of the air electrode production equipment. The PLC control unit can use a touch screen to monitor the liquid level of the first mixing unit 1 and the second mixing unit 2 online and control the outflow speed of the slurry, the moving speed of the mesh conveyor belt 51, and the vacuum pumping. The vacuum degree of the filter unit 6 and the cutting speed of the cutting unit 8, etc., so that the different units of the air electrode production equipment can run synchronously.

The air electrode sheet prepared by the air electrode production equipment of the present invention sequentially includes a filter paper layer, a current collector layer, a waterproof layer, a catalytic layer, a current collector layer and a filter paper layer. The air electrode is formed by hot pressing or the like. Since the current collecting layer is generally a porous layer, during the hot pressing process, the waterproof layer and the catalytic layer will be pressed out through the holes of the current collecting layer, thereby forming the waterproof layer and the current collecting layer stacked in sequence. and the air electrode of the catalytic layer.

To sum up, the present invention provides an air electrode production equipment, comprising: a first mixing unit for preparing a catalyst layer slurry; a second mixing unit for preparing a waterproof layer slurry; a first spraying unit, It includes a first pulling mechanism for pulling the first material and a first spraying port for spraying the catalytic layer slurry through the first spraying port to the first pulling mechanism pulled by the first pulling mechanism. On the material; the second spraying unit, including a second pulling mechanism for pulling the second material and a second spraying port, for spraying the waterproof layer slurry to the second pulling through the second spraying port on the second material pulled by the mechanism; a conveying unit, including a mesh conveyor belt, used to carry and drive the sprayed first material and the sprayed second material to move; a vacuum suction filter unit, including Vacuum filtration device, the vacuum filtration device is arranged below the mesh conveyor belt, and is used for vacuum filtration of the sprayed first material and the sprayed second material; roll forming The unit is arranged on the right side of the conveying unit, and is used to roll the first material and the second material after the vacuum filtration to form an air electrode sheet; the first spraying port and the The second spraying port is arranged above the mesh conveyor belt and is spaced at a certain distance along the conveying direction of the mesh conveyor belt. From the preparation of the powder required for the air electrode to the formation of the air electrode sheet, the whole process is mechanized and continuous production, the production process is simple and efficient, and the mechanized, large-scale and continuous production can be realized, and the manufacturing cost can be reduced. In addition, the automation control unit further improves the automation level of the production equipment of the present invention; finally, the mechanized and continuous production improves the consistency of the performance of the air electrode sheet. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present invention should still be covered by the claims of the present invention.

Claims (15)

1. an air electrode production equipment, is characterized in that, described production equipment comprises: the first mixing unit, used for preparing the catalyst layer slurry; The second mixing unit is used to prepare the slurry of the waterproof layer; The first spraying unit includes a first pulling mechanism and a first spraying port for pulling a first material, wherein the first material includes a first current collecting layer; The second spraying unit includes a second pulling mechanism and a second spraying port for pulling the second material, wherein the second material includes a second current collecting layer; a conveying unit, including a mesh conveyor belt for carrying and driving the sprayed first material and the sprayed second material to move; The vacuum suction filtration unit includes a vacuum suction filtration device, and the vacuum suction filtration device is arranged below the mesh conveyor belt for vacuuming the sprayed first material and the sprayed second material suction filtration; A roll forming unit, arranged on the right side of the conveying unit, is used for roll forming the first material and the second material after the vacuum filtration to form an air electrode sheet; The first spraying port and the second spraying port are arranged above the mesh conveyor belt and spaced a certain distance along the conveying direction of the mesh conveyor belt. 2 . The air electrode production equipment according to claim 1 , wherein the first spraying unit is located on the left side of the second spraying unit, and the first spraying port is used for spraying the catalytic layer slurry. 3 . onto the first material pulled by the first pulling mechanism, and the second spray port is used to spray the waterproof layer slurry onto the catalytic layer filtered by the vacuum filtration unit on the slurry. 3. The air electrode production equipment according to claim 1, wherein the second spraying unit is located on the left side of the first spraying unit, and the second spraying port is used for spraying the waterproof layer slurry onto the second material pulled by the second pulling mechanism, and the first spraying port is used to spray the catalytic layer slurry onto the waterproof layer filtered by the vacuum filtration unit on the slurry. 4 . The air electrode production equipment according to claim 1 , wherein the air electrode production equipment further comprises a cutting unit, disposed on the right side of the roll forming unit, for cutting the air electrode sheet. 5 . 5 . The air electrode production equipment according to claim 4 , wherein the cutting unit uses a pneumatic method to cut the air electrode sheet. 6 . 6 . The air electrode production equipment according to claim 1 , wherein the first mixing unit comprises a first stirring tank, a first impeller disposed in the first stirring tank, and a first impeller disposed in the first stirring tank. 7 . A first discharge port at the bottom of the stirring tank, the first impeller is driven to rotate by a motor to agitate the catalytic layer slurry in the first stirring tank, and the catalytic layer is stirred through the first discharge port. The layer slurry is discharged; the second mixing unit includes a second stirring tank, a second impeller disposed in the second stirring tank, and a second discharge port disposed at the bottom of the second stirring tank. The second impeller is driven to rotate by a motor to agitate the waterproof layer slurry in the second stirring tank, and discharge the waterproof layer slurry through the second discharge port. 7 . The air electrode production equipment according to claim 1 , wherein the waterproof layer slurry comprises powdery waterproof layer material and a dispersant, and the catalyst layer slurry includes powdery catalyst layer material and a dispersant. 8 . 8 . The air electrode production equipment according to claim 7 , wherein the material of the waterproof layer comprises carbon powder, a binder and a pore-forming agent, and the material of the catalytic layer comprises carbon powder, a binder and a pore-forming agent. 9 . agent and catalyst, the first current collector layer includes one of the group consisting of nickel foam, nickel mesh, copper foam, copper mesh and stainless steel mesh, and the second current collector layer includes nickel foam, nickel mesh, foam One of the group consisting of copper, copper mesh and stainless steel mesh. 9. The air electrode production equipment according to claim 2 or 3, wherein the first pulling mechanism comprises a first inner roller and a first outer roller, and the first inner roller is used for pulling the The current collecting layer, the first outer roller is used for pulling the filter paper; the second pulling mechanism includes a second inner roller and a second outer roller, the second inner roller is used for pulling the current collecting layer, The second outer roller is used for pulling the filter paper. 10 . The air electrode production equipment according to claim 1 , wherein the width of the first spraying port is the same as the width of the first material, and the width of the second spraying port is the same as that of the second material. 11 . of the same width. 11. The air electrode production equipment according to claim 1, wherein the vacuum filtration device comprises a first vacuum filtration device and a second vacuum filtration device, and the first vacuum filtration device is arranged in the Below the mesh conveyor belt between the first spraying port and the second spraying port, the second vacuum suction filtration device is arranged at the position where the first material and the second material overlap. Below the mesh conveyor belt. 12 . The air electrode production equipment according to claim 1 , wherein the vacuum suction filtration device further comprises a recovery tank for recovering the filtrate in the slurry of the catalytic layer and the slurry of the waterproof layer. 13 . 13 . The air electrode production equipment according to claim 1 , wherein the mesh size of the mesh conveyor belt is between 0.5 mm and 5 mm. 14 . 14. The air electrode production equipment according to claim 1, wherein the roll forming unit comprises a pair of rollers, and the first material and the second material pass through the gap between the rollers Extrusion. 15. The air electrode production equipment according to claim 1, characterized in that: the air electrode production equipment further comprises a PLC control unit for real-time monitoring and control of the air electrode production equipment.

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