Efficient dispersing device for long and short cut carbon fibers

Abstract

The utility model relates to the technical field of hydrogen fuel cells, in particular to a long and short cut carbon fiber efficient dispersing device which comprises a dispersing component, a lifting component is mounted at the top of the dispersing component, and a stirring component is mounted at the top of the lifting component. The dispersing assembly comprises a bottom plate, a first U-shaped block and a second U-shaped block are mounted at the top of the bottom plate, a first connecting block is rotatably mounted on the inner wall of the first U-shaped block, a dispersing barrel is mounted on one side of the first connecting block, and a second connecting block is rotatably mounted on the inner wall of the second U-shaped block. According to the improved efficient dispersion device, the ultrasonic generation device and the stirring assembly are adopted, and when materials are stirred and dispersed, the dispersion effect and efficiency of the efficient dispersion device during dispersion work are improved under the synergistic effect of stirring and ultrasonic; and by adopting the dispersing assembly and the lifting assembly, the materials can be automatically discharged after being stirred and dispersed, so that the convenience during discharging is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to a high-efficiency dispersing device for chopped carbon fibers. Background Art

[0002] Proton exchange membrane fuel cells (PEMFCs) convert hydrogen into electricity with high energy conversion efficiency. Carbon fiber paper, with its advantages of low cost, excellent conductivity, corrosion resistance, and high stability, is a key substrate material for the gas diffusion layer in PEMFCs. Carbon fiber paper is made from carbon fibers using a wet-forming process. During the preparation process, uniform dispersion of the carbon fibers in water is crucial for ensuring the uniformity of the finished carbon paper. Carbon fibers (CF) are high-performance fiber materials with a carbon content exceeding 90% and a diameter of only 5 to 10 μm. They possess high strength, high modulus, lightweight, high conductivity, high-temperature resistance, and excellent chemical stability, making them widely used in the production of high-performance carbon fiber paper. High-quality carbon fiber slurry plays a crucial role in the preparation of high-performance carbon fiber paper. Its dispersion directly affects the mechanical strength, electrical conductivity, and pore structure of the carbon fiber paper. Good carbon fiber dispersion is the foundation for achieving high-quality carbon fiber paper. Commonly used dispersion methods include single dispersion systems and composite dispersion systems. A single dispersion system usually relies on a single dispersant, which has limitations in dispersion efficiency and applicability. Therefore, an efficient dispersion device for chopped carbon fibers is needed.

[0003] In the process of realizing the present invention, the inventors found that the existing technology had the following problems: 1. When the existing ordinary dispersion device is put into use, it usually relies solely on the rotation of the blades to stir the carbon fiber and the matrix material, and the stirring and dispersing effect is poor; 2. After the existing ordinary dispersion device completes the material processing, when it comes to the material removal process, manual unloading is usually required, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this utility model is to provide a highly efficient dispersing device for chopped carbon fibers to address the problems raised in the aforementioned background art. To achieve the aforementioned objectives, the utility model provides the following technical solution: a highly efficient dispersing device for chopped carbon fibers, comprising a dispersing assembly, a lifting assembly mounted on top of the dispersing assembly, and a stirring assembly mounted on top of the lifting assembly.

[0005] The dispersion assembly includes a base plate, a first U-shaped block and a second U-shaped block are installed on the top of the base plate, a first connecting block is rotatably installed on the inner wall of the first U-shaped block, a dispersion cylinder is installed on one side of the first connecting block, a second connecting block is rotatably installed on the inner wall of the second U-shaped block, an electric push rod is installed on one side of the second connecting block, a third connecting block is installed on one end of the electric push rod, a partition is installed on the inner wall of the dispersion cylinder, and an ultrasonic generating device is installed on the bottom of the partition.

[0006] The lifting assembly includes an H-shaped mounting frame installed on the top of the base plate, the inner wall of the H-shaped mounting frame is installed with a reduction motor, a sliding rod and a fixed plate, the output end of the reduction motor is installed with a screw, the outer wall of the screw is threadedly installed with a moving tube, and the outer wall of the moving tube is installed with a U-shaped frame.

[0007] The stirring assembly includes a body installed on the top of the U-shaped frame, a feed hopper is installed through the top of the body, a servo motor is installed at the bottom of the body, a stirring shaft is installed at the output end of the servo motor, an ultrasonic probe is installed at the bottom of the stirring shaft, and a dispersion claw is installed on the outer wall of the stirring shaft.

[0008] Further preferably, there are a plurality of ultrasonic generating devices, and the plurality of ultrasonic generating devices are evenly and equidistantly distributed at the bottom of the partition.

[0009] Further preferably, a third connecting block is rotatably mounted on the front end of the outer wall of the dispersion cylinder, and the dispersion cylinder and the first connecting block form a rotating mechanism through the third connecting block and the electric push rod and the first U-shaped block.

[0010] Further preferably, the U-shaped frame and the movable tube form a screw transmission mechanism through a screw rod and a reduction motor.

[0011] Further preferably, a U-shaped frame is slidably mounted on the outer wall of the slide rod, and the slide rods are symmetrically distributed about the vertical center line of the U-shaped frame, and rectangular holes with internal size structures consistent with the external size structures of the U-shaped frame are opened on both sides of the fixed plate.

[0012] Further preferably, the dispersing claws form a rotating mechanism through a stirring shaft and a servo motor.

[0013] Further preferably, there are a plurality of dispersing claws, and the plurality of dispersing claws are distributed in a ring shape with the vertical center line of the stirring shaft as the origin, and the plurality of dispersing claws are distributed in multiple layers from top to bottom on the outer wall of the stirring shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the utility model, through the ultrasonic generating device and the stirring assembly, when the material is stirred and dispersed, the servo motor is started to drive the stirring shaft, the dispersion claws and the ultrasonic probe to rotate, and the multi-layer dispersion claws stir the carbon fiber and the matrix material in the dispersion cylinder. At the same time, several ultrasonic generating devices are started, and the ultrasonic generating devices continuously emit ultrasonic waves to further refine the dispersion degree of the carbon fiber. The material in the dispersion cylinder continuously circulates under the synergistic effect of stirring and ultrasound until the carbon fiber reaches a relatively ideal high-efficiency dispersion state, thereby improving the dispersion effect and efficiency of the high-efficiency dispersion device when performing dispersion work.

[0016] In the utility model, through the dispersion component and the lifting component, after the material is stirred and dispersed, the reduction motor is started, and the stirring component is driven to move upward through the screw, the moving tube and the U-shaped frame. When the stirring shaft, the ultrasonic probe and the dispersion claw are moved out of the dispersion cylinder, the electric push rod is then started, and the dispersion cylinder is driven to tilt to the right through the third connecting block, and the material in the dispersion cylinder is poured out. The material can be unloaded automatically, which reduces the work intensity of the staff and improves the convenience of unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the dispersed components of the utility model;

[0019] Figure 3 This is a schematic diagram of the full cross-section structure of the dispersed component of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the lifting component of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the stirring component of the present utility model.

[0022] In the figure: 1. Dispersion component; 101. Base plate; 102. First U-shaped block; 103. Second U-shaped block; 104. First connecting block; 105. Dispersion cylinder; 106. Second connecting block; 107. Electric push rod; 108. Third connecting block; 109. Partition; 1010. Ultrasonic generator; 2. Lifting component; 201. H-shaped mounting frame; 202. Reducer motor; 203. Slide rod; 204. Fixed plate; 205. Screw; 206. Moving tube; 207. U-shaped frame; 3. Stirring component; 301. Machine body; 302. Feed hopper; 303. Servo motor; 304. Stirring shaft; 305. Ultrasonic probe; 306. Dispersion claw. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] See also Figures 1 to 5 The utility model provides a technical solution: a high-efficiency dispersion device for chopped carbon fibers, comprising a dispersion component 1, a lifting component 2 is installed on the top of the dispersion component 1, and a stirring component 3 is installed on the top of the lifting component 2.

[0025] The dispersion component 1 includes a base plate 101, a first U-shaped block 102 and a second U-shaped block 103 are installed on the top of the base plate 101, a first connecting block 104 is rotatably installed on the inner wall of the first U-shaped block 102, a dispersion tube 105 is installed on one side of the first connecting block 104, a second connecting block 106 is rotatably installed on the inner wall of the second U-shaped block 103, an electric push rod 107 is installed on one side of the second connecting block 106, a third connecting block 108 is installed on one end of the electric push rod 107, a partition 109 is installed on the inner wall of the dispersion tube 105, and an ultrasonic generating device 1010 is installed at the bottom of the partition 109.

[0026] The lifting assembly 2 includes an H-shaped mounting frame 201 installed on the top of the base plate 101. The inner wall of the H-shaped mounting frame 201 is installed with a reduction motor 202, a sliding rod 203 and a fixed plate 204. The output end of the reduction motor 202 is installed with a screw 205. The outer wall of the screw 205 is threadedly installed with a moving tube 206, and the outer wall of the moving tube 206 is installed with a U-shaped frame 207.

[0027] The stirring assembly 3 includes a body 301 installed on the top of the U-shaped frame 207, a feed hopper 302 is installed through the top of the body 301, a servo motor 303 is installed at the bottom of the body 301, a stirring shaft 304 is installed at the output end of the servo motor 303, an ultrasonic probe 305 is installed at the bottom of the stirring shaft 304, and a dispersion claw 306 is installed on the outer wall of the stirring shaft 304.

[0028] In this embodiment, Figure 3 As shown, there are several ultrasonic generating devices 1010, and the ultrasonic generating devices 1010 are evenly and equidistantly distributed at the bottom of the partition 109; the ultrasonic power range is 50-200W, and by emitting high-frequency ultrasonic waves, the ultrasonic cavitation effect is used to generate tiny bubbles in the liquid medium. The impact force generated by the instantaneous rupture of these bubbles helps to break the agglomeration of carbon fibers and make them more evenly dispersed in the system.

[0029] In this embodiment, Figure 2 As shown, a third connecting block 108 is rotatably mounted on the front end of the outer wall of the dispersion cylinder 105, and the dispersion cylinder 105 and the first connecting block 104 form a rotating mechanism through the third connecting block 108 and the electric push rod 107 and the first U-shaped block 102; when the electric push rod 107 is started, the dispersion cylinder 105 is driven to tilt to the right through the third connecting block 108. By adjusting the tilt angle of the dispersion cylinder 105, the material in the dispersion cylinder 105 can be poured out, facilitating unloading. One side of the dispersion cylinder 105 can be an arc-shaped structure to make it easier to pour the material; and the position of the third connecting block 108 can be preset according to actual needs. The present invention does not limit this, as long as the material can be poured.

[0030] In this embodiment, Figure 4 As shown, the U-shaped frame 207 and the movable tube 206 form a spiral transmission mechanism through the screw 205 and the reduction motor 202; when the reduction motor 202 is started, the screw 205 can drive the U-shaped frame 207 and the movable tube 206 to move up and down, and when the U-shaped frame 207 moves up and down, it can drive the stirring assembly 3 to move up and down. When unloading, the stirring shaft 304, the ultrasonic probe 305 and the dispersion claw 306 of the stirring assembly 3 can be automatically removed from the dispersion cylinder 105 to facilitate subsequent unloading.

[0031] In this embodiment, Figure 4 As shown, a U-shaped frame 207 is slidably installed on the outer wall of the slide rod 203, and the slide rods 203 are symmetrically distributed about the vertical center line of the U-shaped frame 207, and rectangular holes with internal size structures consistent with the external size structures of the U-shaped frame 207 are opened on both sides of the fixed plate 204; when the U-shaped frame 207 moves up and down, the slide rod 203 can improve the stability of the U-shaped frame 207 when moving up and down, and the U-shaped frame 207 slides in the rectangular holes on the fixed plate 204, which can improve the stability of the stirring component 3 when it is driven up and down by the U-shaped frame 207.

[0032] In this embodiment, Figure 5 As shown, the dispersing claw 306 forms a rotating mechanism through the stirring shaft 304 and the servo motor 303; when the servo motor 303 is started, the dispersing claw 306 is driven to rotate through the stirring shaft 304, and the stirring speed is 0.5-2m / s, which can stir the carbon fiber and matrix material in the dispersing cylinder 105.

[0033] In this embodiment, Figure 5As shown, a total of several dispersing claws 306 are provided, and the several dispersing claws 306 are distributed in a ring shape with the vertical center line of the stirring shaft 304 as the origin, and the several dispersing claws 306 are distributed in multiple layers from top to bottom on the outer wall of the stirring shaft 304; the capacity of the dispersing cylinder 105 can be designed according to the amount of slurry, and the material can be stainless steel, acrylic or other. According to the capacity of the dispersing cylinder 105, the dispersing claws 306 can be set to a length of 50-100 mm and an interval of 40-60 mm. When the dispersing claws 306 are driven to rotate, they can generate strong radial flow and axial flow like turbine blades, which can effectively stir the mixture of carbon fiber and matrix material, and promote the dispersion of carbon fiber in the slurry.

[0034] The use method and advantages of this utility model: This device is specially designed for efficient dispersion of long and short chopped carbon fibers. When in use, the working process is as follows:

[0035] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, first, carbon fibers and matrix materials are added to the dispersion cylinder 105 through the feed hopper 302, and then the servo motor 303 is started to drive the stirring shaft 304, the dispersion claws 306 and the ultrasonic probe 305 to rotate. The multi-layer dispersion claws 306 stir the carbon fibers and matrix materials in the dispersion cylinder 105. At the same time, several ultrasonic generators 1010 are started, and the ultrasonic generators 1010 continuously emit ultrasonic waves to further refine the dispersion degree of the carbon fibers. During stirring, materials can be added to the dispersion cylinder 105 through the feed hopper 302 according to needs. The material in the dispersion cylinder 105 circulates continuously under the synergistic effect of stirring and ultrasound until the carbon fiber reaches a relatively ideal and efficient dispersion state. When unloading is required, the reduction motor 202 is started, and the stirring assembly 3 is driven to move upward through the screw 205, the moving tube 206 and the U-shaped frame 207. When the stirring shaft 304, the ultrasonic probe 305 and the dispersion claw 306 are removed from the dispersion cylinder 105, the electric push rod 107 is then started, and the dispersion cylinder 105 is driven to tilt to the right through the third connecting block 108 to pour out the material in the dispersion cylinder 105.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly efficient dispersion device for chopped carbon fibers, comprising a dispersion assembly (1), characterized in that: A lifting assembly (2) is installed on the top of the dispersing assembly (1), and a stirring assembly (3) is installed on the top of the lifting assembly (2); The dispersion assembly (1) comprises a base plate (101), a first U-shaped block (102) and a second U-shaped block (103) are installed on the top of the base plate (101), a first connecting block (104) is rotatably installed on the inner wall of the first U-shaped block (102), a dispersion tube (105) is installed on one side of the first connecting block (104), a second connecting block (106) is rotatably installed on the inner wall of the second U-shaped block (103), an electric push rod (107) is installed on one side of the second connecting block (106), a third connecting block (108) is installed on one end of the electric push rod (107), a partition (109) is installed on the inner wall of the dispersion tube (105), and an ultrasonic generating device (1010) is installed at the bottom of the partition (109); The lifting assembly (2) comprises an H-shaped mounting frame (201) mounted on the top of the base plate (101); a reduction motor (202), a slide rod (203) and a fixed plate (204) are mounted on the inner wall of the H-shaped mounting frame (201); a screw rod (205) is mounted on the output end of the reduction motor (202); a moving tube (206) is threadedly mounted on the outer wall of the screw rod (205); and a U-shaped frame (207) is mounted on the outer wall of the moving tube (206); The stirring assembly (3) comprises a body (301) mounted on the top of a U-shaped frame (207); a feed hopper (302) is installed through the top of the body (301); a servo motor (303) is installed at the bottom of the body (301); a stirring shaft (304) is installed at the output end of the servo motor (303); an ultrasonic probe (305) is installed at the bottom of the stirring shaft (304); and a dispersion claw (306) is installed on the outer wall of the stirring shaft (304).

2. The device for efficiently dispersing chopped carbon fibers according to claim 1, characterized in that: A total of several ultrasonic generating devices (1010) are provided, and the ultrasonic generating devices (1010) are evenly and equidistantly distributed at the bottom of the partition (109).

3. The device for efficiently dispersing chopped carbon fibers according to claim 1, characterized in that: A third connecting block (108) is rotatably mounted on the front end of the outer wall of the dispersion cylinder (105), and the dispersion cylinder (105) and the first connecting block (104) form a rotating mechanism through the third connecting block (108) and the electric push rod (107) with the first U-shaped block (102).

4. The device for efficiently dispersing chopped carbon fibers according to claim 1, characterized in that: The U-shaped frame (207) and the moving tube (206) form a screw transmission mechanism through the screw (205) and the reduction motor (202).

5. The device for efficiently dispersing chopped carbon fibers according to claim 1, characterized in that: A U-shaped frame (207) is slidably mounted on the outer wall of the slide bar (203), and the slide bars (203) are symmetrically distributed about the vertical center line of the U-shaped frame (207). Rectangular holes with internal dimensions consistent with the external dimensions of the U-shaped frame (207) are provided on both sides of the fixed plate (204).

6. The device for efficiently dispersing chopped carbon fibers according to claim 1, characterized in that: The dispersing claw (306) forms a rotating mechanism through the stirring shaft (304) and the servo motor (303).

7. The device for efficiently dispersing chopped carbon fibers according to claim 1, characterized in that: A plurality of dispersing claws (306) are provided, and the plurality of dispersing claws (306) are distributed in a ring shape with the vertical center line of the stirring shaft (304) as the origin, and the plurality of dispersing claws (306) are distributed in multiple layers from top to bottom on the outer wall of the stirring shaft (304).

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