Fuel cell catalyst slurry mixing device

Abstract

The utility model discloses a fuel cell catalyst slurry mixing device and relates to the technical field of battery processing. The device comprises a mixing cylinder, a cylinder cover and a motor, wherein a heat preservation cavity is formed in the mixing cylinder; a barrel cover is screwed to the top end of the mixing barrel through threads, a motor is fixed to the upper end of the barrel cover, a rotating shaft is fixed to an output shaft of the motor, a fixed stirring piece arranged in an arc shape is fixed to the periphery of the rotating shaft, and three movable stirring pieces are rotationally connected to the peripheral face, located on the inner side of the fixed stirring piece, of the rotating shaft; an air pipe is fixed on the cylinder cover on one side of the motor in a penetrating manner. Through the arrangement of the mixing barrel, the motor, the rotating shaft, the fixed stirring piece, the movable stirring piece and the air pipe, the problems that the centrifugal stirring effect is not ideal, shearing type stirring and mixing are lacked, and a conventional stirring structure cannot be matched with the whole container, so that mixing is insufficient are solved; and the problem that the mixing device lacks the function of isolating the influence of external environmental factors when mixing the catalyst slurry is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery processing, in particular to a fuel cell catalyst slurry mixing device. Background Art

[0002] A fuel cell is a power generation device that converts the chemical energy of a fuel directly into electrical energy. The principle of a fuel cell is an electrochemical device, and its composition is the same as that of a general battery. Its single cell consists of two positive and negative electrodes (the negative electrode is the fuel electrode and the positive electrode is the oxidant electrode) and an electrolyte. The difference is that the active substances of a general battery are stored inside the battery, thus limiting the battery capacity. The positive and negative electrodes of a fuel cell do not contain active substances themselves, but are only catalytic conversion elements. Therefore, a fuel cell is a veritable energy conversion machine that converts chemical energy into electrical energy. When the battery is working, the fuel and oxidant are supplied from the outside to react. In principle, as long as the reactants are continuously input and the reaction products are continuously removed, the fuel cell can generate electricity continuously. A fuel cell also requires a corresponding catalyst, and the corresponding catalyst slurry also needs to be produced in the corresponding process. In the production process of the catalyst slurry, the mixing process of the slurry is an indispensable part, but as far as the relevant mixing device is concerned, there are still the following disadvantages in use:

[0003] Conventional material mixing methods are nothing more than stirring and mixing, using a stirring component that is inserted into a relevant storage container (such as a mixing tank, reactor, etc.) for stirring and mixing. However, this type of operation will cause agglomeration of slurries containing powder materials, and the propeller-type stirring components that are often used on the market will form a vortex-like centrifugal effect, which will cause the powder materials to agglomerate and be difficult to decompose, causing them to rotate in one area all the time, lacking the effect of crushing, shearing and mixing, and the conventional stirring part is small in structure and cannot fit the entire container, resulting in inability to fully stir and mix;

[0004] Secondly, during the mixing process of the fuel cell catalyst slurry, external influences should be reduced as much as possible, and a certain temperature or cooling may be required, which is not available in conventional mixing devices. Utility Model Content

[0005] The purpose of the utility model is to provide a fuel cell catalyst slurry mixing device, which solves the problems of unsatisfactory centrifugal stirring effect, lack of shear stirring and mixing, and insufficient mixing caused by the inability of conventional stirring structure to adapt to the entire container by arranging a mixing barrel, a motor, a rotating shaft, a fixed stirring member, a movable stirring member, and an air pipe; and solves the problem that the mixing device lacks the function of isolating the influence of external environmental factors when mixing catalyst slurry.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a fuel cell catalyst slurry mixing device, comprising a mixing cylinder, a cylinder cover and a motor. The mixing cylinder is a hollow spherical structure, and a heat preservation chamber is arranged in the mixing cylinder;

[0008] The top of the mixing cylinder is screwed with a cylinder cover, the upper end of the cylinder cover is fixed with a motor, and the output shaft of the motor passes through the cylinder cover downward and extends into the mixing cylinder to fix a rotating shaft, the outer periphery of the rotating shaft is fixed with an arc-shaped fixed stirring piece, and the outer peripheral surface of the rotating shaft located inside the fixed stirring piece is also rotatably connected with three movable stirring pieces with gradually decreasing inner diameters;

[0009] An air pipe is also fixedly penetrated on the cylinder cover at one side of the motor.

[0010] Furthermore, two connecting pipes are fixedly penetrated on the outer spherical surface of the mixing cylinder, and the adjacent ends of the two connecting pipes extend into the heat preservation cavity and communicate with the heat preservation cavity.

[0011] Furthermore, a material pipe with a sealing cover is fixed through the upper end of the barrel cover at a position opposite to the air pipe, and a one-way air valve is fixed on the barrel cover on the front side of the motor, and the one-way air valve is connected to the inner cavity of the mixing barrel.

[0012] Furthermore, the movable stirring member also has an arc-shaped structure, and saw teeth are provided on the outer arc surfaces of the fixed stirring member and the arc-shaped stirring member.

[0013] Furthermore, the rotation radius of the fixed stirring member is smaller than the radius of the inner cavity of the mixing barrel, and the rotation radius of the movable stirring member with the largest inner diameter is smaller than the rotation radius of the inner arc surface of the fixed stirring member.

[0014] The utility model has the following beneficial effects:

[0015] The utility model solves the problems of unsatisfactory centrifugal stirring effect, lack of shear stirring and mixing, and insufficient mixing caused by conventional stirring structures that cannot adapt to the entire container by arranging a mixing drum, a motor, a rotating shaft, a fixed stirring piece, and a movable stirring piece. The utility model drives the rotating shaft to rotate by the motor, thereby driving the fixed stirring piece to rotate in the mixing drum to stir and mix the slurry. At the same time, the movable stirring piece will rotate around the rotating shaft irregularly, so that no centrifugal effect will be formed, and it will contact with different slurries for uniform mixing and stirring. When the fixed stirring piece and the movable stirring piece are close to each other, or two adjacent movable stirring pieces are staggered and close to each other, a shearing effect will be formed on the slurry in the gap between them, so that the block structure in the slurry is fully broken up and better mixing is achieved.

[0016] The utility model solves the problem that the mixing device lacks the function of isolating the influence of external environmental factors when mixing catalyst slurry by arranging a mixing cylinder and an air pipe, and has certain heat preservation, heat insulation, auxiliary heating and cooling functions; inert gas is input through the air pipe, and the air in the mixing cylinder is discharged from the one-way air valve to ensure a safe environment in the mixing cylinder during mixing, and the heat preservation chamber has certain heat preservation and heat insulation functions, and heating oil or cooling water can be injected for heating or heat preservation according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0018] Figure 1 is a three-dimensional diagram of a fuel cell catalyst slurry mixing device;

[0019] Figure 2 It is a structural diagram of the mixing cylinder after cross-section;

[0020] Figure 3 It is the connection diagram of the motor, the rotating shaft and the cylinder cover;

[0021] Figure 4 A cross-sectional view of the mixing cylinder.

[0022] Reference numerals:

[0023] 1. Mixing barrel; 101. Connecting pipe; 102. Insulating chamber; 2. Barrel cover; 201. Air pipe; 202. One-way air valve; 203. Material pipe; 3. Motor; 301. Rotating shaft; 302. Fixed stirring element; 3021. Sawtooth; 303. Movable stirring element. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1-4 As shown, the utility model is a fuel cell catalyst slurry mixing device, comprising a mixing barrel 1, a barrel cover 2 and a motor 3. The mixing barrel 1 is a hollow spherical structure, and a heat preservation chamber 102 is arranged in the mixing barrel 1. The spherical structure design of the mixing barrel 1 can reduce the volume of the container, so that the inner cavity space is more suitable for the operation of the stirring part, so that the slurry is better mixed, and the additional setting of the heat preservation chamber 102 has certain heat preservation and heat insulation functions, and can be injected with heating oil or cooling water for heating or heat preservation according to actual needs;

[0026] The top of the mixing barrel 1 is screwed with a barrel cover 2, and a motor 3 is fixed on the upper end of the barrel cover 2. The output shaft of the motor 3 passes through the barrel cover 2 downward and extends into the mixing barrel 1 to fix a rotating shaft 301. An arc-shaped fixed stirring piece 302 is fixed on the outer periphery of the rotating shaft 301, and three movable stirring pieces 303 with gradually decreasing inner diameters are rotatably connected to the outer periphery of the rotating shaft 301 located inside the fixed stirring piece 302.

[0027] The drum cover 2 is screwed onto the mixing drum 1, and the motor 3 is used as the power required for stirring during mixing to drive the rotating shaft 301 to rotate. When the rotating shaft 301 rotates, it will drive the fixed stirring member 302 and the movable stirring member 303 arranged on the outer periphery thereof to rotate. Since the fixed stirring member 302 is fixed to the rotating shaft 301, it will rotate synchronously with the rotating shaft 301, while the movable stirring member 303 is movably arranged and will rotate alternately with the fixed stirring member 302 asynchronously. The movable stirring member 303 will realize irregular rotation due to the resistance of the fluid, but it can still touch the slurry to assist in stirring and mixing;

[0028] An air pipe 201 is also fixedly passed through the cylinder cover 2 on one side of the motor 3; the air pipe 201 is connected to external equipment to input inert gas into the mixing cylinder 1 to increase safety, reduce the impact of mitigation factors, and reduce the impact of ambient air.

[0029] Two connecting pipes 101 are fixedly passed through the outer spherical surface of the mixing drum 1, and the ends of the two connecting pipes 101 close to each other extend into the heat preservation chamber 102 and communicate with it; the connecting pipes 101 can be connected to the input and output of heat transfer oil or cooling water, one connecting pipe 101 inputs and the other outputs to achieve circulation, so that the mixing drum 1 can be used for auxiliary heating or cooling, with better functionality.

[0030] A material pipe 203 with a sealing cover is fixed through the upper end of the barrel cover 2 at a position opposite to the air pipe 201, and a one-way air valve 202 is fixed on the barrel cover 2 on the front side of the motor 3, and the one-way air valve 202 is connected to the inner cavity of the mixing barrel 1;

[0031] The material pipe 203 can be used to add some required ingredients, etc., and can be sealed by the cover after adding. The design of the one-way air valve 202 is that when the air pipe 201 inputs inert gas into the mixing barrel 1, the air pressure in the mixing barrel 1 increases. When it exceeds one standard atmospheric pressure, it will be exhausted to the outside through the one-way air valve 202. After a period of time, the air in the mixing barrel 1 is exhausted and only the inert gas is left. At this time, the input is stopped until the internal pressure reaches a standard atmospheric pressure. The one-way air valve 202 will close itself and will no longer exhaust air to the outside to ensure the safety of mixing inside the mixing barrel 1.

[0032] The movable stirring member 303 also has an arc-shaped structure, and the outer arc surfaces of the fixed stirring member 302 and the arc-shaped stirring member are both provided with sawtooth 3021. The special design of the sawtooth 3021 can increase the shearing effect. Because the movable stirring member 303 will rotate irregularly around the rotating shaft 301, no centrifugal effect will be formed, and it will come into contact with different slurries, thereby uniformly mixing and stirring. When the fixed stirring member 302 and the movable stirring member 303 are close to each other, or two adjacent movable stirring members 303 are staggered and close to each other, a shearing effect will be formed on the slurry in the gap between them, thereby fully breaking up the block structure in the slurry and better mixing.

[0033] The rotation radius of the fixed stirring member 302 is smaller than the radius of the inner cavity of the mixing barrel 1, and the rotation radius of the movable stirring member 303 with the largest inner diameter is smaller than the rotation radius of the inner arc surface of the fixed stirring member 302; while satisfying the shear mixing effect, no motion interference will be formed.

[0034] The specific working principle of the utility model is as follows: first, certain ingredients are added into the mixing barrel 1, the barrel cover 2 is closed and tightened, and before stirring and mixing, the air pipe 201 is connected to the external equipment to input inert gas into the mixing barrel 1. At this time, the air pressure in the mixing barrel 1 increases, and when it exceeds a standard atmospheric pressure, the air will be exhausted to the outside through the one-way air valve 202. After a period of time, the air in the mixing barrel 1 is exhausted, and only the inert gas is left. At this time, the input is stopped, and then the motor 3 works to drive the rotating shaft 301 to rotate. When the rotating shaft 301 rotates, it will drive the fixed stirring member 302 and the movable stirring member 302 arranged on its periphery. When the fixed stirring member 302 and the movable stirring member 303 are close to each other, or two adjacent movable stirring members 303 are close to each other, a shearing effect is formed on the slurry in the gap between them, and the agglomerated materials in the slurry are fully broken up. The design of the sawtooth 3021 can increase the shearing effect and achieve sufficient mixing processing.

[0035] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A fuel cell catalyst slurry mixing device, comprising a mixing cylinder (1), a cylinder cover (2) and a motor (3), characterized in that: The mixing cylinder (1) is a hollow spherical structure, and a heat preservation chamber (102) is provided inside the mixing cylinder (1); The top end of the mixing barrel (1) is screwed with a barrel cover (2), a motor (3) is fixed to the upper end of the barrel cover (2), and an output shaft of the motor (3) passes through the barrel cover (2) downward and extends into the mixing barrel (1) to fix a rotating shaft (301), an arc-shaped fixed stirring piece (302) is fixed to the outer periphery of the rotating shaft (301), and three movable stirring pieces (303) with gradually decreasing inner diameters are rotatably connected to the outer periphery of the rotating shaft (301) located inside the fixed stirring piece (302); An air pipe (201) is also fixedly passed through the cylinder cover (2) on one side of the motor (3).

2. A fuel cell catalyst slurry mixing device according to claim 1, characterized in that: Two connecting pipes (101) are also fixedly passed through the outer spherical surface of the mixing cylinder (1), and the adjacent ends of the two connecting pipes (101) extend into the heat preservation chamber (102) and communicate with it.

3. A fuel cell catalyst slurry mixing device according to claim 1, characterized in that: A material pipe (203) with a sealing cover is also fixedly passed through the upper end of the barrel cover (2) at a position opposite to the air pipe (201), and a one-way air valve (202) is also fixedly provided on the barrel cover (2) at the front side of the motor (3), and the one-way air valve (202) is communicated with the inner cavity of the mixing barrel (1).

4. A fuel cell catalyst slurry mixing device according to claim 1, characterized in that: The movable stirring member (303) also has an arc-shaped structure, and saw teeth (3021) are provided on the outer arc surfaces of the fixed stirring member (302) and the arc-shaped stirring member.

5. A fuel cell catalyst slurry mixing device according to claim 1, characterized in that: The rotation radius of the fixed stirring member (302) is smaller than the radius of the inner cavity of the mixing barrel (1), and the rotation radius of the movable stirring member (303) with the largest inner diameter is smaller than the rotation radius of the inner arc surface of the fixed stirring member (302).

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