High-precision adding and mixing device for fuel cell slurry

Abstract

The utility model provides a high-precision adding and mixing device for fuel cell slurry. The high-precision adding and mixing device comprises a receiving tank body, a weighing mechanism, a bracket, a stirring motor, a stirring paddle, a coupler and a tank body lifting mechanism, when stirring and mixing work is carried out, the receiving tank body is moved to a stirring position through the tank body lifting assembly, the movable end of the stirring motor and the rotating shaft end of the stirring paddle are connected through the coupler, torque is transmitted, and stirring and mixing are carried out. When liquid adding work is carried out, the receiving tank body is moved to the weighing position through the tank body lifting assembly, feeding is carried out on the receiving tank body, and the weighing mechanism measures the feeding weight. According to the arrangement, the receiving tank body is moved through the tank body lifting assembly, so that the charging work and the stirring and mixing work of the receiving tank body are complementarily influenced in a spaced manner, the stirring action is prevented from influencing the weighing precision, and the content precision and the mixing uniformity of various raw materials of the fuel cell slurry can be ensured at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel cells, and particularly relates to a high-precision adding and mixing device for fuel cell slurry. Background Art

[0002] A hydrogen fuel cell is a power generation device that converts the chemical energy in the fuel directly into electrical energy through an electrochemical reaction. Since pure hydrogen is used as fuel, the only product of the electrochemical reaction is water, which has little pollution to the environment. In addition, there is no relative mechanical movement when the fuel cell is working, so the noise is low. In addition, the fuel cell has high theoretical efficiency and a wide range of applications, and has great development prospects.

[0003] The basic working principle of hydrogen fuel cells is: hydrogen and oxygen are introduced into the fuel cell, and redox reactions occur under the catalytic action of the catalyst layer. As the reaction progresses, electrons continue to flow, thereby generating electricity. Therefore, the composition and structure of the catalyst layer have a significant impact on the performance of the fuel cell. The slurry that forms the catalytic layer is generally composed of catalysts, resins, alcohols, water and other materials. The proportion and distribution of each material in the slurry directly affects the microstructure composition and uniformity of the subsequent catalytic layer during molding, and further affects the catalytic and mass transfer effects of the catalytic layer. Therefore, the accuracy of the addition amount of various materials in the catalyst layer slurry and the mixing uniformity are very high, and it is very difficult to balance accuracy and mixing uniformity.

[0004] In various industries, common methods of adding weighing include weight-loss weighing and weight-gain weighing. When materials need to be added and stirred at the same time, weight-loss weighing is generally used. Weight-loss weighing is to place the raw material tank on the weighing system. The amount of raw material added is displayed by the decrease in the raw material weighing value. At the same time, the various raw materials added are stirred in the receiving tank below. However, due to the presence of heavy raw material tanks, the range of the balance is generally large, resulting in low measurement accuracy. In order to avoid the influence of raw material tanks on measurement accuracy, weight-gain weighing is usually used. Weight-gain weighing is to place a receiving tank on the weighing system. The amount of raw material added is displayed by the increase in the weighing value. However, when multiple raw materials need to be mixed, it is necessary to add mixing mechanisms such as stirring and shaking to the adding tank. However, these mechanisms will inevitably cause fluctuations in the weighing value during operation, affecting the weighing accuracy.

[0005] Therefore, how to simultaneously ensure the content accuracy and mixing uniformity of multiple raw materials of fuel cell slurry is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] The utility model aims to provide a high-precision adding and mixing device for fuel cell slurry, which can simultaneously ensure the content accuracy and mixing uniformity of various raw materials of the fuel cell slurry.

[0007] In order to solve the above technical problems, the utility model provides a high-precision adding and mixing device for fuel cell slurry, comprising:

[0008] A receiving tank, the interior of which is used to contain fuel cell slurry;

[0009] A weighing mechanism, used for weighing the receiving tank;

[0010] A bracket, a stirring motor and a stirring paddle, wherein the fixed end of the stirring motor is connected to the bracket, the stirring paddle is rotatably connected to the receiving tank body, the blade end of the stirring paddle is located inside the receiving tank body, and the shaft end is located outside the receiving tank body;

[0011] A coupling, wherein two parts of the coupling are respectively arranged at the movable end of the stirring motor and the rotating shaft end of the stirring paddle;

[0012] A tank lifting mechanism, the tank lifting mechanism is used to move the receiving tank between a stirring position and a weighing position;

[0013] Among them, when the receiving tank body is located in the stirring position, the two parts of the coupling on the movable end of the stirring motor and the rotating shaft end of the stirring paddle are connected to each other, and stirring can be performed inside the receiving tank body; when the receiving tank body is located in the weighing position, the two parts of the coupling on the movable end of the stirring motor and the rotating shaft end of the stirring paddle are separated from each other, and material can be added into the receiving tank body and the receiving tank body can be weighed.

[0014] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the coupling is a magnetic coupling.

[0015] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the magnetic coupling includes an inner magnetic rotor and an outer magnetic rotor, one of the inner magnetic rotor and the outer magnetic rotor is arranged at the movable end of the stirring motor, and the other is arranged at the rotating shaft end of the stirring paddle.

[0016] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the support is a gantry.

[0017] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the weighing mechanism is a high-precision electronic balance.

[0018] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, a supporting structure for supporting the receiving tank is provided on the weighing mechanism.

[0019] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the support structure includes a plurality of support rods, one end of each of the support rods is connected to the weighing mechanism, and the other end is provided with a slot, and the slots at the other ends of all the support rods form a weighing position for supporting the bottom of the receiving tank.

[0020] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the receiving tank body is provided with a feed inlet and a discharge port, and the receiving tank body is respectively provided with a feed inlet for adding fuel cell slurry and a discharge port for discharging fuel cell slurry.

[0021] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the tank lifting mechanism includes a lifting mechanism and a clamping mechanism, the movable end of the lifting mechanism is connected to the fixed end of the clamping mechanism, and the movable end of the clamping mechanism is used to clamp the receiving tank.

[0022] Optionally, in the above-mentioned high-precision adding and mixing device for fuel cell slurry, the lifting mechanism and the clamping mechanism correspond one to one, and there are multiple groups of the clamping mechanisms, and the multiple groups of the clamping mechanisms are evenly arranged along the circumference of the receiving tank.

[0023] The utility model provides a high-precision adding and mixing device for fuel cell slurry, and its beneficial effects are:

[0024] When stirring and mixing is performed, the receiving tank is moved to the stirring position (the receiving tank is separated from the weighing mechanism) by the tank lifting assembly, and the movable end of the stirring motor and the rotating shaft end of the stirring paddle are connected by a coupling to transmit torque for stirring and mixing. When adding liquid, the receiving tank is moved to the weighing position (the receiving tank is separated from the stirring motor) by the tank lifting assembly, and the weighing mechanism measures the added weight by adding materials to the receiving tank. The above arrangement moves the receiving tank by the tank lifting assembly, so that the adding work of the receiving tank and the stirring and mixing work are complementary in an intermittent manner, thereby avoiding the stirring action affecting the weighing accuracy, and can simultaneously ensure the content accuracy and mixing uniformity of various raw materials of the fuel cell slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a high-precision adding and mixing device for fuel cell slurry provided in an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the structure of the tank lifting mechanism provided by an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of a receiving tank provided in an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of the structure of a weighing mechanism provided in an embodiment of the utility model.

[0030] In the above picture:

[0031] 1-weighing mechanism; 2-receiving tank; 3-stirring motor; 4-stirring paddle; 5-tank lifting mechanism; 6-feeding port; 7-discharging port. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] The core of the utility model is to provide a high-precision adding and mixing device for fuel cell slurry, which can simultaneously ensure the content accuracy and mixing uniformity of various raw materials of the fuel cell slurry.

[0034] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Specifically, please refer to Figure 1-Figure 4 In order to improve the degree of automation in the production process of fuel cell catalyst layer slurry preparation and to be able to simultaneously perform high-precision addition and stirring and mixing of multiple raw materials, the utility model provides a high-precision addition and mixing device for fuel cell slurry, including: a receiving tank 2, a weighing mechanism 1, a bracket, a stirring motor 3, a stirring paddle 4, a coupling and a tank lifting mechanism 5.

[0036] The interior of the receiving tank 2 is used to contain the fuel cell slurry.

[0037] The weighing mechanism 1 is used to weigh the receiving tank 2. The weighing mechanism 1 has many types and can be adaptively selected according to actual needs.

[0038] The fixed end of the stirring motor 3 is connected to the bracket, and the stirring paddle 4 is rotatably connected to the receiving tank body 2. The blade end of the stirring paddle 4 is located inside the receiving tank body 2, and the rotating shaft end is located outside the receiving tank body 2. The two parts of the coupling are respectively arranged at the movable end of the stirring motor 3 and the rotating shaft end of the stirring paddle 4. When the movable end of the stirring motor 3 is connected to the rotating shaft end of the stirring paddle 4 through the coupling, the stirring paddle 4 can be driven to rotate by the stirring motor 3, so as to stir and mix the slurry in the receiving tank body 2.

[0039] The tank lifting mechanism 5 is used to move the receiving tank 2 between the stirring position and the weighing position. The movement between the stirring position and the weighing position can be horizontal movement or vertical movement, and can also be adaptively selected according to actual needs.

[0040] When the receiving tank body 2 is in the stirring position, the two parts of the coupling on the movable end of the stirring motor 3 and the rotating shaft end of the stirring paddle 4 are connected to each other, and stirring can be performed inside the receiving tank body 2; when the receiving tank body 2 is in the weighing position, the two parts of the coupling on the movable end of the stirring motor 3 and the rotating shaft end of the stirring paddle 4 are separated from each other, and material can be added into the receiving tank body 2 and the receiving tank body 2 can be weighed.

[0041] The high-precision adding and mixing device for fuel cell slurry provided by this scheme, when stirring and mixing work is performed, the receiving tank body 2 is moved to the stirring position (the receiving tank body 2 is separated from the weighing mechanism 1) by the tank body lifting assembly, and the movable end of the stirring motor 3 and the rotating shaft end of the stirring paddle 4 are connected by a coupling to transmit torque to stir and mix. When adding liquid, the receiving tank body 2 is moved to the weighing position (the receiving tank body 2 is separated from the stirring motor 3) by the tank body lifting assembly, and the weighing mechanism 1 measures the added weight by adding materials to the receiving tank body 2. The above-mentioned setting, by moving the receiving tank body 2 by the tank body lifting assembly, enables the adding work of the receiving tank body 2 and the stirring and mixing work to be performed at intervals, thereby avoiding the stirring action affecting the weighing accuracy, and can simultaneously ensure the content accuracy and mixing uniformity of various raw materials of the fuel cell slurry.

[0042] In order to prevent the stress of the cable of the stirring motor 3 from affecting the weighing accuracy, the stirring motor 3 and the stirring paddle 4 are arranged to be detachably connected through a coupling. At the same time, in order to achieve a quick connection between the stirring motor 3 and the stirring paddle 4, in a specific embodiment, the coupling is a magnetic coupling. The magnetic coupling is a coupling that transmits torque by a magnetic component, through the transmission of torque between the two parts of the coupling. The magnetic coupling is a key component for achieving contactless torque transmission, thereby achieving complete leakage-free. Generally, there are two forms: disc-shaped and cylindrical. Since the disc-shaped coupling is composed of two face-to-face annular magnets and a spacer sleeve therein, there is an axial force between the two annular magnets.

[0043] Specifically, the magnetic coupling includes an outer magnetic rotor and an inner magnetic rotor, and of course, a spacer sleeve, which is located between the outer magnetic rotor and the inner magnetic rotor and fixed on the housing of the stirring motor 3, so that the housing and the interior of the spacer form a connected and completely sealed chamber. The magnets are closely arranged along the circumferential direction on the outer cylindrical surface of the inner magnetic rotor and the inner cylindrical surface of the outer magnetic rotor to form a "combined push-pull magnetic circuit". The end of the stirring motor 3 and the end of the stirring paddle 4 are separated by the built-in magnetic coupling.

[0044] When the tank lifting assembly lifts the receiving tank 2, the movable end of the stirring motor 3 and the rotating shaft end of the stirring paddle 4 transmit torque through magnetic force to perform stirring and mixing.

[0045] In a specific embodiment, the bracket is a gantry, and the fixed end of the stirring motor 3 is arranged on the gantry, so that the movable end of the stirring motor 3 is just located above the weighing mechanism 1, which facilitates the coupling on the movable end of the stirring motor 3 and the rotating shaft end of the stirring paddle 4 to connect with each other.

[0046] In order to improve the weighing accuracy, the weighing mechanism 1 may adopt a high-precision electronic balance.

[0047] The weighing mechanism 1 is provided with a support structure for supporting the receiving tank 2. The support structure is located at the weighing position of the weighing mechanism 1. The support structure can be a tray or other structure that can stably support the bottom of the receiving tank 2. Specifically, the support structure includes a plurality of support rods, one end of each support rod is connected to the weighing mechanism 1, and the other end is provided with a slot, and the slots at the other ends of all the support rods form a weighing position for supporting the bottom of the receiving tank 2.

[0048] In a specific embodiment, a feed port 6 and a discharge port 7 are provided on the receiving tank body 2. The receiving tank body 2 is provided with a feed port 6 for adding fuel cell slurry and a discharge port 7 for discharging fuel cell slurry. For example, the feed port 6 can be provided at the top of the receiving tank body 2, and the discharge port 7 can be provided at the bottom of the receiving tank body 2.

[0049] In a specific embodiment, the tank lifting mechanism 5 includes a lifting mechanism and a clamping mechanism, the movable end of the lifting mechanism is connected to the fixed end of the clamping mechanism, and the movable end of the clamping mechanism is used to clamp and receive the tank 2.

[0050] The lifting mechanism and the clamping mechanism correspond to each other one by one, and there are multiple groups of clamping mechanisms, and the multiple groups of clamping mechanisms are evenly arranged along the circumference of the receiving tank body 2. A clamping position for clamping the receiving tank body 2 is formed between the multiple groups of clamping jaws. Figure 1 As shown, two groups of lifting mechanisms and clamping mechanisms can be provided, and the fixed ends of the two groups of lifting mechanisms can be fixedly connected to the bottom of the bracket. The tank lifting mechanism 5 and the bracket can be an integrally formed structure, thereby realizing an integrated design of the tank lifting mechanism 5 and the bracket.

[0051] The beneficial effects brought by the technical solution provided by the utility model include:

[0052] 1. By setting up a high-precision weighing mechanism 1 and adding in batches, high-precision addition and metering of raw materials in the slurry making process of the fuel cell catalyst layer are achieved.

[0053] 2. By adding the design of the automatic tank lifting mechanism 5, a process mode of alternately adding materials and stirring and mixing is realized, while ensuring the raw material content accuracy and mixing uniformity of the fuel cell catalyst layer slurry.

[0054] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] In the description of this application, the meaning of "plurality" is more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0056] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0057] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0058] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A high-precision adding and mixing device for fuel cell slurry, characterized in that: include: A receiving tank, the interior of which is used to contain fuel cell slurry; A weighing mechanism, used for weighing the receiving tank; A bracket, a stirring motor and a stirring paddle, wherein the fixed end of the stirring motor is connected to the bracket, the stirring paddle is rotatably connected to the receiving tank body, the blade end of the stirring paddle is located inside the receiving tank body, and the shaft end is located outside the receiving tank body; A coupling, wherein two parts of the coupling are respectively arranged at the movable end of the stirring motor and the rotating shaft end of the stirring paddle; A tank lifting mechanism, the tank lifting mechanism is used to move the receiving tank between a stirring position and a weighing position; Among them, when the receiving tank body is located in the stirring position, the two parts of the coupling on the movable end of the stirring motor and the rotating shaft end of the stirring paddle are connected to each other, and stirring can be performed inside the receiving tank body; when the receiving tank body is located in the weighing position, the two parts of the coupling on the movable end of the stirring motor and the rotating shaft end of the stirring paddle are separated from each other, and material can be added into the receiving tank body and the receiving tank body can be weighed.

2. The high-precision adding and mixing device for fuel cell slurry according to claim 1, characterized in that: The coupling is a magnetic coupling.

3. The high-precision adding and mixing device for fuel cell slurry according to claim 2, characterized in that: The magnetic coupling comprises an inner magnetic rotor and an outer magnetic rotor, one of which is arranged at the movable end of the stirring motor, and the other is arranged at the rotating shaft end of the stirring paddle.

4. The high-precision adding and mixing device for fuel cell slurry according to claim 1, characterized in that: The support is a gantry.

5. The high-precision adding and mixing device for fuel cell slurry according to claim 1, characterized in that: The weighing mechanism is a high-precision electronic balance.

6. The high-precision adding and mixing device for fuel cell slurry according to claim 1, characterized in that: The weighing mechanism is provided with a supporting structure for supporting the receiving tank body.

7. The high-precision adding and mixing device for fuel cell slurry according to claim 6, characterized in that: The support structure includes a plurality of support rods, one end of each of the support rods is connected to the weighing mechanism, and the other end is provided with a slot, and the slots at the other ends of all the support rods form a weighing position for supporting the bottom of the receiving tank.

8. The high-precision adding and mixing device for fuel cell slurry according to claim 1, characterized in that: The receiving tank body is provided with a feed inlet and a discharge inlet. The receiving tank body is provided with a feed inlet for adding fuel cell slurry and a discharge inlet for discharging fuel cell slurry.

9. The high-precision adding and mixing device for fuel cell slurry according to claim 1, characterized in that: The tank lifting mechanism comprises a lifting mechanism and a clamping mechanism, the movable end of the lifting mechanism is connected to the fixed end of the clamping mechanism, and the movable end of the clamping mechanism is used to clamp the receiving tank.

10. The high-precision adding and mixing device for fuel cell slurry according to claim 9, characterized in that: The lifting mechanism and the clamping mechanism correspond one to one, and there are multiple groups of the lifting mechanism, and the multiple groups of the clamping mechanism are evenly arranged along the circumference of the receiving tank body.

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