High-precision adjustment shear mixer for preparing high-viscosity membrane electrode slurry

Abstract

The invention relates to the technical field of membrane electrode slurry stirring and processing, in particular to a high-precision adjustment shear mixer for preparing high-viscosity membrane electrode slurry, a control unit comprises a top rod fixedly arranged on a vertical rod, a shell is fixedly arranged on the top rod, and a supporting frame is fixedly arranged at the bottom end of the shell; a control box is fixedly arranged on the supporting frame, two parallel detection heads are fixedly arranged on the shell, a corrugated pipe is fixedly arranged on the shell, a detection device with a rotating speed sensor as a core and a control system are arranged on the equipment, and the detection device can collect rotating speed data of a stirring shaft or a dispersion disc in real time. And the data is dynamically fed back to a control system through a signal line. After an operator presets a target dispersing and stirring speed in a touch interface of the control system, the system can automatically compare a real-time detection value with a set value, and if deviation occurs, the output power of the driving motor is immediately adjusted, the speed fluctuation is controlled within a preset range, and normal operation of operation is ensured.

Description

Technical Field

[0001] This invention relates to the field of membrane electrode slurry mixing and processing technology, specifically a highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry. Background Technology

[0002] The membrane electrode assembly (MEA), as the core component of a proton exchange membrane battery, directly determines the battery's performance. The most crucial part of the MEA is the catalyst layer, located in the region between the proton exchange membrane and the gas diffusion layer. The catalyst layer is prepared from a catalyst slurry, a mixture of catalyst, ionomer, and solvent. The composition of the catalyst slurry has a significant impact on the chemical stability of the catalyst layer.

[0003] The main components of a traditional high-precision adjustable shear mixer for preparing high-viscosity membrane electrode slurries include a mixing shell, a stirring element, and a drive mechanism. The mixing shell has a feeding chamber and a mixing chamber, used for feeding powder and mixing slurry, respectively. The stirring element comprises a first stirring section in the feeding chamber and a second stirring section in the mixing chamber, which can break down the powder and mix it with the liquid. The drive mechanism provides power to the stirring element. In use, liquid is first injected into the mixing chamber through the inlet channel. The stirring element is then started. Once the pressure in the mixing chamber reaches the set negative pressure value, powder is fed in through the powder inlet. The powder is sheared and broken down in the feeding chamber before entering the mixing chamber, where it is thoroughly mixed with the liquid. By adjusting parameters such as the stirring speed, precise adjustable shear mixing of the high-viscosity slurry can be achieved.

[0004] Traditional equipment struggles to break down nanoscale powder agglomerates primarily because nanoparticles have a large specific surface area and high surface energy, making them prone to forming dense, hard agglomerates through van der Waals forces and hydrogen bonds. Traditional shear mixers concentrate shear force locally, resulting in uneven energy transfer and an inability to effectively penetrate agglomerate structures. Furthermore, traditional equipment often employs a single, fixed stirring mode, limiting the design and installation of the impellers. Dead zones easily form at the vessel walls, bottom, and impeller roots, hindering the flow of high-viscosity slurries. Over time, these zones accumulate and fail to participate in overall mixing, ultimately leading to residual agglomerates in the slurry. This negatively impacts the uniformity of subsequent membrane electrode coating and electrochemical performance, resulting in poor slurry dispersion. Summary of the Invention

[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is that traditional equipment is unable to break down nano-sized powder agglomerates. The core reason is that nano-powders have a large specific surface area and high surface energy, and are prone to forming dense hard agglomerates through van der Waals forces and hydrogen bonds. The shear force of traditional shear mixers is concentrated locally, and the energy transfer is uneven, which cannot effectively penetrate the agglomerate structure. At the same time, traditional equipment mostly adopts a single fixed stirring mode, and the design and installation position of the impeller are limited. The vessel wall, bottom and impeller root are prone to forming stirring dead zones. High viscosity slurry is obstructed in these areas, and after long-term accumulation, it is difficult to participate in the overall mixing. Ultimately, agglomerates remain in the slurry, affecting the coating uniformity and electrochemical performance of the subsequent membrane electrode, resulting in poor slurry dispersion.

[0006] The technical solution adopted by this application to solve its technical problem is: a highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry, including a base plate, on which vertical rods are fixedly arranged, and the vertical rods are arranged parallel to each other.

[0007] The control unit includes a top rod fixedly mounted on the vertical rod, a housing fixedly mounted on the top rod, a support frame fixedly mounted on the bottom end of the housing, a control box fixedly mounted on the support frame, two parallel detection heads fixedly mounted on the housing, and a bellows fixedly mounted on the housing, with the bellows located at the bottom end of the detection heads. The control unit is used to detect and regulate the operating status of the device in real time.

[0008] The processing unit includes a support 1 movably mounted on the base plate, a support 2 fixedly mounted on the base plate, a support plate rotatably mounted on the other end of the support 2, a servo motor fixedly mounted on the support plate, a stirring cylinder fixedly mounted on the support plate, a clamping plate fixedly mounted on the vertical rod, and the other end of the clamping plate communicating with the stirring cylinder. The processing unit is used to process and mix the membrane electrode slurry placed in the stirring cylinder.

[0009] Preferably, a protective shell is fixedly provided at the connection between the base plate and the vertical rod, and multiple parallel support columns are fixedly provided on the bottom of the protective shell.

[0010] Preferably, a horizontal bar is fixedly provided between two adjacent protective shells, and each horizontal bar is arranged parallel to each other. A hinge is fixedly provided on the side wall of the vertical rod, and a reinforcing rod is fixedly provided on the top rod, and the cross-section of the reinforcing rod is L-shaped.

[0011] Preferably, a crossbar is fixedly installed on the base plate, a guardrail is fixedly installed on the crossbar, a guardrail is fixedly installed on the side wall of the crossbar, and a reinforcing plate is fixedly installed on the guardrail.

[0012] Preferably, a positioning seat is fixedly provided on the crossbar, a hydraulic rod is rotatably provided on the positioning seat, a slider is fixedly provided on the bracket, the slider is slidably connected to the base plate, the other end of the hydraulic rod is movably connected to the bracket, and a connecting plate is fixedly provided between two adjacent brackets.

[0013] Preferably, a controller is fixedly mounted on the support plate.

[0014] Preferably, a cover plate is rotatably mounted on the mixing drum, a hydraulic rod movably mounted on the outer wall of the mixing drum, a long plate is fixedly mounted on the outer wall of the cover plate, a connector is fixedly mounted on the output end of the hydraulic rod rotatably mounted on the long plate, and a clamping plate is fixedly mounted at the corner of the mixing drum.

[0015] Preferably, a chain is fixedly installed on the bottom end of the servo motor, a reinforcing strip is fixedly installed on the stirring drum, a rotating shaft is rotatably installed inside the stirring drum, and the output end of the servo motor is fixedly connected to the rotating shaft.

[0016] Preferably, a stirring blade one is fixedly disposed on the outer circumferential surface of the rotating shaft, and the stirring blade one is in contact with the inner wall of the stirring cylinder, and a stirring blade two is fixedly disposed on the rotating shaft.

[0017] Preferably, the sidewall of the first stirring blade is provided with a leakage hole, and the multiple leakage holes are evenly distributed among each other, and the diameter of the first stirring blade is not less than the diameter of the second stirring blade.

[0018] The beneficial effects of this application are as follows: This application provides a highly precise adjustable shear mixer for preparing high-viscosity membrane electrode slurry. The entire device is controlled via a shell mounted on a base plate. A detection device and control system, centered on a speed sensor, are installed on the equipment. The detection device can collect real-time speed data of the stirring shaft or dispersion disc and dynamically feed the data back to the control system via signal lines. After the operator presets the target dispersion and stirring rate in the touch interface of the control system, the system automatically compares the real-time detection value with the set value. If a deviation occurs, the output power of the drive motor is immediately adjusted to control the rate fluctuation within the predetermined range, ensuring normal operation. The stirring drum is supported by brackets one and two mounted on the base plate. During use, the operator adds materials to the stirring drum via a clamp and then starts the servo motor. The rotating servo motor drives the rotating shaft through an adapter. The rotating shaft, through stirring blades one and two on its outer circumference, stirs and mixes the slurry inside the stirring drum, thereby producing the membrane electrode. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a side view of the structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the processing unit structure of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0024] Figure 6 This is a schematic diagram of the stirring cylinder structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the rotating shaft structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the control unit structure of the present invention.

[0027] In the diagram: 1. Base plate; 11. Horizontal bar; 110. Fixing plate; 111. Guardrail; 112. Reinforcing plate; 12. Vertical bar; 121. Hinge; 13. Top bar; 131. Reinforcing bar; 2. Protective shell; 21. Support column; 22. Horizontal bar; 3. Outer shell; 31. Support frame; 32. Corrugated pipe; 33. Control box; 34. Detection head; 4. Bracket 1; 40. Sliding block; 41. Hydraulic rod 1. Positioning seat; 411. Connecting plate; 42. Support plate; 43. Controller; 44. Bracket 2; 6. Servo motor; 60. Chain; 61. Hydraulic rod 2; 611. Reinforcing strip; 62. Clamping plate; 620. Feed pipe; 63. Cover plate; 631. Long plate; 632. Connector; 64. Rotating shaft; 65. Stirring blade 1; 651. Leakage hole; 66. Stirring blade 2; 7. Stirring drum. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] Reference Figures 1-8 A highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry includes a base plate 1, on which vertical rods 12 are fixedly mounted, and the vertical rods 12 are arranged parallel to each other.

[0031] The control unit includes a top rod 13 fixedly mounted on the vertical rod 12, a housing 3 fixedly mounted on the top rod 13, a support frame 31 fixedly mounted on the bottom end of the housing 3, a control box 33 fixedly mounted on the support frame 31, two parallel detection heads 34 fixedly mounted on the housing 3, and a bellows 32 fixedly mounted on the housing 3, with the bellows 32 located at the bottom end of the detection heads 34. The control unit is used to detect and control the operating status of the device in real time.

[0032] The processing unit includes a support 4 movably mounted on a base plate 1, a support 5 fixedly mounted on the base plate 1, a support plate 43 rotatably mounted on the other end of the support 5, a servo motor 6 fixedly mounted on the support plate 43, a stirring drum 7 fixedly mounted on the support plate 43, and a feed pipe 620 fixedly mounted on a vertical rod 12. The other end of the feed pipe 620 is connected to the stirring drum 7. The processing unit is used to process and mix the membrane electrode slurry placed in the stirring drum 7.

[0033] Reference Figures 1-3 A protective shell 2 is fixedly installed at the connection between the base plate 1 and the vertical rod 12, and multiple parallel support columns 21 are fixedly installed at the bottom of the protective shell 2. The protective shell 2 installed between the base plate 1 and the vertical rod 12 can enhance the overall stability of the device and the safety during use.

[0034] Reference Figures 2-4 A horizontal bar 22 is fixedly installed between two adjacent protective shells 2, and each horizontal bar 22 is arranged parallel to each other. A hinge 121 is fixedly installed on the side wall of the vertical rod 12, and a reinforcing rod 131 is fixedly installed on the top rod 13. The cross section of the reinforcing rod 131 is L-shaped. The stability of the protective shell 2 is reinforced by the horizontal bar 22 installed on the protective shell 2, ensuring that the device will not produce violent shaking during operation, thereby improving the uniformity of the device in stirring the membrane electrode slurry.

[0035] Reference Figures 1-5 A crossbar 11 is fixedly installed on the base plate 1, a guardrail 111 is fixedly installed on the crossbar 11, a fixing plate 110 is fixedly installed on the side wall of the crossbar 11, and a reinforcing plate 112 is fixedly installed on the fixing plate 110. The crossbar 11 installed on the base plate 1 can provide a stable support point for the guardrail 111.

[0036] Reference Figures 4-7A positioning seat 411 is fixedly installed on the crossbar 11, and a hydraulic rod 41 is rotatably installed on the positioning seat 411. A slider 40 is fixedly installed on the bracket 4, and the slider 40 is slidably connected to the base plate 1. The other end of the hydraulic rod 41 is movably connected to the bracket 4. A connecting plate 42 is fixedly installed between two adjacent brackets 4. The hydraulic rod 41 installed on the crossbar 11 enables the operator to adjust the height of the processing unit by controlling the extension length of the hydraulic rod 41. The moving slider 40 can drive the bracket 4 to move, thereby adjusting the vertical height of the support plate 43 and facilitating the operator to check the safety of the device.

[0037] Reference Figures 4-7 A controller 44 is fixedly installed on the support plate 43. The controller 44 can adjust the stirring rate of the material in the mixing drum 7.

[0038] Reference Figures 5-8 A cover plate 63 is rotatably mounted on the mixing drum 7. A hydraulic rod 61 is movably mounted on the outer wall of the mixing drum 7. A long plate 631 is fixedly mounted on the outer wall of the cover plate 63. A connector 632 is fixedly mounted on the output end of the hydraulic rod 61. The connector 632 is rotatably connected to the long plate 631. A clamping plate 62 is fixedly mounted at the corner of the mixing drum 7. The cover plate 63 mounted on the mixing drum 7 protects the materials inside.

[0039] Reference Figures 5-8 A chain 60 is fixedly installed on the bottom end of the servo motor 6, a reinforcing strip 611 is fixedly installed on the mixing drum 7, and a rotating shaft 64 is rotatably installed inside the mixing drum 7. The output end of the servo motor 6 is fixedly connected to the rotating shaft 64. Through the chain 60 installed on the servo motor 6, the servo motor 6 can operate stably during the up and down movement of the processing unit.

[0040] Reference Figures 6-8 A stirring blade 65 is fixedly installed on the outer circumferential surface of the rotating shaft 64, and the stirring blade 65 is in close contact with the inner wall of the mixing drum 7. A stirring blade 66 is fixedly installed on the rotating shaft 64. The stirring blade 65 and the stirring blade 66 installed on the rotating shaft 64 can achieve uniform stirring of the material inside the mixing drum 7.

[0041] Reference Figures 6-8 The side wall of the first stirring blade 65 is provided with a leakage hole 651, and the multiple leakage holes 651 are evenly arranged among each other. The diameter of the first stirring blade 65 is not less than the diameter of the second stirring blade 66. The mixing rate of the device is improved by the leakage hole 651 provided on the first stirring blade 65.

[0042] Specifically, this solution is as follows: The high-precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry provided in this application strengthens the stability of the protective shell 2 by setting horizontal bars 22 on the protective shell 2, ensuring that the device will not produce violent shaking during operation, thereby improving the uniformity of the device in stirring the membrane electrode slurry. The outer shell 3 set on the base plate 1 enables the overall control of the device. The device is equipped with a detection device with a speed sensor as the core and a PLC control system. The detection device can collect the speed data of the stirring shaft or the dispersing disk in real time and dynamically feed the data back to the control system through signal lines. After the operator presets the target dispersion stirring rate in the touch interface of the control system, the system will automatically compare the real-time detection value with the set value. If a deviation occurs, the output power of the drive motor will be adjusted immediately to control the rate fluctuation within the predetermined range, ensuring normal operation. When the operator needs to adjust the height of the processing unit, the operator can control the movement of the slider 40 by controlling the extension length of the hydraulic rod 41. The moving slider 40 can drive the support 4 to move, thereby adjusting the vertical height of the support plate 43, which is convenient for the operator to check the safety of the device. The support 4 and the support 5 set on the base plate 1 support the mixing drum 7. When in use, the operator can add materials into the mixing drum 7 through the clamp 62, and then start the servo motor 6. The rotating servo motor 6 drives the rotating shaft 64 to rotate through the adapter. The rotating shaft 64 can stir and mix the slurry inside the mixing drum 7 through the stirring blades 65 and 66 on its outer circumference. The stirring structure adopts a combination of revolution and rotation, and with the help of the movable scraper to remove residual materials from the vessel wall, the membrane electrode is made.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0044] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry, comprising a base plate (1), wherein vertical rods (12) are fixedly arranged on the base plate (1), and the vertical rods (12) are arranged parallel to each other, characterized in that... Also includes: The control unit includes a top rod (13) fixedly mounted on the vertical rod (12), a housing (3) fixedly mounted on the top rod (13), a support frame (31) fixedly mounted on the bottom end of the housing (3), a control box (33) fixedly mounted on the support frame (31), two parallel detection heads (34) fixedly mounted on the housing (3), and a bellows (32) fixedly mounted on the housing (3), with the bellows (32) located at the bottom end of the detection head (34). The control unit is used to detect and control the operating status of the device in real time. The processing unit includes a support 1 (4) movably mounted on the base plate (1), a support 2 (5) fixedly mounted on the base plate (1), a support plate (43) rotatably mounted on the other end of the support 2 (5), a servo motor (6) fixedly mounted on the support plate (43), a stirring drum (7) fixedly mounted on the support plate (43), and a feed pipe (620) fixedly mounted on the vertical rod (12). The other end of the feed pipe (620) is connected to the stirring drum (7). The processing unit is used to process and mix the membrane electrode slurry placed in the stirring drum (7).

2. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 1, characterized in that, A protective shell (2) is fixedly installed at the connection between the base plate (1) and the vertical rod (12), and multiple parallel support columns (21) are fixedly installed on the bottom of the protective shell (2).

3. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 2, characterized in that, A horizontal bar (22) is fixedly provided between two adjacent protective shells (2), and each horizontal bar (22) is arranged parallel to each other. A hinge (121) is fixedly provided on the side wall of the vertical rod (12), and a reinforcing rod (131) is fixedly provided on the top rod (13), and the cross section of the reinforcing rod (131) is L-shaped.

4. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 1, characterized in that, A crossbar (11) is fixedly installed on the base plate (1), a guardrail (111) is fixedly installed on the crossbar (11), a fixing plate (110) is fixedly installed on the side wall of the crossbar (11), and a reinforcing plate (112) is fixedly installed on the fixing plate (110).

5. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 4, characterized in that, A positioning seat (411) is fixedly installed on the crossbar (11), and a hydraulic rod (41) is rotatably installed on the positioning seat (411). A slider (40) is fixedly installed on the bracket (4). The slider (40) is slidably connected to the base plate (1). The other end of the hydraulic rod (41) is movably connected to the bracket (4). A connecting plate (42) is fixedly installed between two adjacent brackets (4).

6. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 5, characterized in that, A controller (44) is fixedly installed on the support plate (43).

7. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 1, characterized in that, A cover plate (63) is rotatably mounted on the stirring drum (7). A hydraulic rod (61) is movably mounted on the outer wall of the stirring drum (7). A long plate (631) is fixedly mounted on the outer wall of the cover plate (63). A connector (632) is fixedly mounted on the output end of the hydraulic rod (61). The connector (632) is rotatably connected to the long plate (631). A clamping plate (62) is fixedly mounted at the corner of the stirring drum (7).

8. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 1, characterized in that, A chain (60) is fixedly installed on the bottom end of the servo motor (6), a reinforcing strip (611) is fixedly installed on the stirring drum (7), a rotating shaft (64) is rotatably installed inside the stirring drum (7), and the output end of the servo motor (6) is fixedly connected to the rotating shaft (64).

9. The highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 8, characterized in that, A stirring blade (65) is fixedly provided on the outer circumferential surface of the rotating shaft (64), and the stirring blade (65) is in close contact with the inner wall of the stirring cylinder (7). A stirring blade (66) is fixedly provided on the rotating shaft (64).

10. A highly precision adjustable shear mixer for preparing high-viscosity membrane electrode slurry according to claim 9, characterized in that, The side wall of the first stirring blade (65) is provided with a leakage hole (651), and the multiple leakage holes (651) are evenly arranged among each other. The diameter of the first stirring blade (65) is not less than the diameter of the second stirring blade (66).

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