Graphene powder slurry mixing and supplying device
Patent Information
- Application Number
- CN202522235899.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0003]本实用新型的目的在于克服现有技术中的不足，提供一种石墨烯粉浆料混合供应装置，用于石墨烯粉和混合溶剂的自动配比，可以无需采用人工反复称重的方式即可以自动实现溶液的定量供应，有助于保障浆液在满足需求稠度的情况下实现快速生产
本实用新型通过在混合罐的内部，将驱动杆和搅拌杆通过扭矩传感器连接，使得在搅拌动作发生时，浆料会影响搅拌装置的阻力，通过扭矩传感器检测阻力的强弱，即可以判断当前浆料的稀度或稠度，此方式下，人工仅需要在混合罐内添加石墨烯粉末即可，自动化控制溶剂的供应，当稀度达到一定程度以后，搅拌装置所受的阻力减小，从而扭矩传感器的扭矩也会逐渐减小到设定的阈值范围，此时停止继续向设备供应溶剂即可，可以实现自动化调配工作，有利于实现高效生产，快速供应浆料。
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Figure CN224793417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a graphene powder slurry mixing and supply device, belonging to the field of flexible touch circuit fabrication technology. Background Technology
[0002] Flexible resistive sensing circuits utilize the property that the resistance of a material changes with its physical deformation (being pressed, stretched, or bent) to convert physical signals (pressure / deformation) into electrical signals (resistance changes). These electrical signals are then measured by the circuit to accurately sense changes in external physical quantities. The conventional structure includes a substrate, a sensitive layer, electrodes, and an encapsulation layer. To save on the design cost of the sensitive layer, graphene powder is often mixed with a solvent to form a slurry, which is then coated onto the substrate. In this method, the slurry needs to be dried later to solidify the sensitive layer. Therefore, the density of the slurry and powder mixture ultimately affects the drying time and the thickness after molding. Traditionally, manual mixing is used, but this method is cumbersome, requiring repeated weighing of the mixing agent and graphene powder, which affects the actual preparation efficiency. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a graphene powder slurry mixing and supply device for automatic proportioning of graphene powder and mixed solvent. It can automatically achieve quantitative supply of solution without the need for repeated manual weighing, which helps to ensure that the slurry can achieve rapid production while meeting the required consistency.
[0004] To achieve the above objectives, this utility model employs the following technical solution: This utility model provides a graphene powder slurry mixing and supply device, including a mixing tank, a liquid supply tank connected to the mixing tank, and a powder inlet. The bottom of the mixing tank is connected to a discharge pipe. Solenoid valves are provided on the discharge pipe and the connecting pipe between the liquid supply tank and the mixing tank. A drive rod is rotatably mounted on the top of the mixing tank. The drive rod is connected to a stirring rod through a torque sensor. The stirring rod is located inside the mixing tank, and a stirring assembly is provided below the stirring rod. A motor for driving the drive rod to rotate is also provided on one side of the mixing tank. The motor, the two solenoid valves, and the torque sensor are all electrically connected to a controller.
[0005] Specifically, pulleys are fixedly installed on the upper end of the drive rod and on the output shaft of the motor, and the two pulleys are connected to each other by belt drive.
[0006] Specifically, an air inlet pipe is connected to the upper end of the mixing tank, and the air inlet position of the air inlet pipe on the mixing tank is higher than the powder inlet position of the mixing tank.
[0007] Specifically, the stirring assembly includes several connecting rods disposed at the bottom end of the stirring rod, and each connecting rod has a force-bearing plate at its end.
[0008] Specifically, each of the connecting rods is provided with a number of first stirring rods.
[0009] Specifically, the bottom of the mixing tank is in the shape of an inverted frustum, the connecting rod is located at the junction of the mixing tank body and the frustum, and the connecting rod is also provided with a second stirring rod that matches the position of the inclined surface inside the frustum.
[0010] Specifically, a shut-off valve is installed at the discharge port position on the bottom surface of the frustum.
[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This invention connects the drive rod and stirring rod inside the mixing tank via a torque sensor. During stirring, the slurry affects the resistance of the stirring device. By detecting the strength of this resistance, the torque sensor can determine the current slurry's thinness or consistency. In this method, manual addition of graphene powder to the mixing tank is sufficient; the solvent supply is automatically controlled. When the thinness reaches a certain level, the resistance to the stirring device decreases, and the torque sensor's torque gradually decreases to a set threshold range. At this point, the solvent supply to the equipment is stopped. This automated mixing process facilitates efficient production and rapid slurry supply. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of the supply device provided in this embodiment of the utility model; Figure 2 This is a front view of the supply device provided in an embodiment of the present utility model; Figure 3 This is a utility model Figure 2 A sectional view of the supply device in the AA direction provided in the embodiment; Figure 4 This is a top view of the supply device provided in an embodiment of the present utility model; Reference numerals in the attached diagram: 1. Mixing tank; 2. Liquid supply tank; 3. Powder inlet; 4. Discharge pipe; 5. Solenoid valve; 6. Drive rod; 7. Stirring rod; 8. Torque sensor; 9. Motor; 10. Force plate; 11. First stirring rod; 12. Second stirring rod; 13. Air inlet pipe. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0014] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example:
[0016] This utility model provides a graphene powder slurry mixing and supply device for automatic proportioning of graphene powder and mixed solvent. It can automatically achieve quantitative supply of solution without the need for repeated manual weighing, helping to ensure rapid production while meeting the required slurry consistency. To realize the structural function of the device, it is configured as follows: a mixing tank 1, a liquid supply tank 2 connected to the mixing tank 1, and a powder inlet 3. (See reference...) Figure 1As shown, mixing tank 1 is used to mix graphene powder and prepared mixed solvent. Supply tank 2 is used to supply the mixed solvent (commonly, solvents such as adhesives, dispersants, and leveling agents mixed in a certain proportion, which will not be discussed in detail here). Powder inlet 3 is used for manually adding the corresponding graphene powder. A funnel-shaped structure design is preferred. To achieve the supply of the mixed slurry, a discharge pipe 4 is connected to the bottom of mixing tank 1. Solenoid valves 5 are installed on the discharge pipe 4, as well as on the connecting pipe between supply tank 2 and mixing tank 1. The solenoid valves 5 are used to reasonably control the feeding of the mixed solvent or the discharge of the finished slurry. To detect the slurry's thinness or consistency, and thus determine the water content, a drive rod 6 is rotatably installed on the top of mixing tank 1. The drive rod 6 is connected to a stirring rod 7 via a torque sensor 8. The stirring rod 7 is located inside mixing tank 1, and a stirring assembly is located below the stirring rod 7. The connection method is as described above. Figure 3 As shown, a motor 9 for driving the drive rod 6 to rotate is also provided on one side of the mixing tank 1. When the motor 9 is working, the drive rod 6 transmits torque to the stirring rod 7 through the torque sensor 8. At the beginning of mixing, because the liquid content inside the mixing tank 1 is small, the stirring assembly is subject to greater resistance, resulting in a larger detected torque. As the mixing solvent is gradually added to the device, the dilution of the mixed substances in the mixing tank 1 gradually increases, and the resistance gradually decreases until the preset torque value is reached. At this point, the slurry is in an ideal finished product state and can be used for supply. In order to control the start and stop of the device, the stop supply of the mixing solvent, and the discharge of the finished product at reasonable times, the motor 9, two solenoid valves 5, and the torque sensor 8 can be electrically connected to the controller. In the above configuration, it should be noted that the mixing solvent can be supplied by gravity and placed above the mixing tank 1, while the slurry can be discharged by pumping. The specific supply method is not limited here.
[0017] This utility model provides a graphene powder slurry mixing and supply device, specifically providing a connection structure to simplify the setting of the space above the mixing tank 1, so as to facilitate opening the mixing tank 1 from the top for internal inspection and maintenance, etc. Specifically, pulleys can be fixedly installed on the upper end of the drive rod 6 and the output shaft of the motor 9, and the two pulleys can be connected to each other by belt drive, thereby simplifying the space above the mixing tank 1 and facilitating manual disassembly.
[0018] This utility model provides a graphene powder slurry mixing and supply device, specifically providing a method for controlling slurry discharge. Specifically, an air inlet pipe 13 is connected to the upper end of the mixing tank 1. The mixing tank 1 is configured to be sealed (including the powder inlet 3 and the liquid supply tank 2, which should be sealed with a sealing cap). Air is supplied to the mixing tank 1 through the air inlet pipe 13, and the slurry can be extruded by the air pressure. This method does not require a pump structure at the slurry outlet section. The slurry is freely supplied by the extrusion action of the air pressure, which helps to adapt to the application pipeline to directly apply the slurry to the substrate. In order to avoid the air inlet pipe 13 from being inserted into the slurry and generating uneven bubbles in the slurry, the air outlet of the air inlet pipe 13 should be set higher. Specifically, the air inlet position of the mixing tank 1 where the air inlet pipe 13 is located (that is, the air outlet position of the air inlet pipe 13 itself) can be configured to be higher than the powder inlet position of the mixing tank 1 where the powder inlet 3 is located.
[0019] This utility model provides a graphene powder slurry mixing and supply device. In order to make the stirring assembly more sensitive to resistance detection, it can provide a larger force-bearing surface to contact the material inside the mixing tank 1. Specifically, the stirring assembly can be configured to include several connecting rods set at the bottom of the stirring rod 7, and a force-bearing plate 10 is set at the end of each connecting rod. The plane of the force-bearing plate 10 is preferably parallel to the axis of the stirring rod 7, so that the resistance surface can be maximized during rotation, thereby providing a larger resistance range for the torque sensor 8 to detect.
[0020] This utility model provides a graphene powder slurry mixing and supply device. Considering the need for convenient, rapid, and thorough mixing of the materials in the mixing tank 1, several first stirring rods 11 can be provided on each connecting rod. (Refer to...) Figure 3 As shown, by discretely arranging these first stirring rods 11, the mixture in the mixing tank 1 can be quickly and evenly stirred, thereby rapidly changing the effect of resistance to uniformity and providing a faster response time for supplying the mixing solvent. To facilitate slurry discharge and reduce slurry residue in the mixing tank 1, the bottom of the mixing tank 1 can be configured in an inverted frustum shape, such as... Figure 3 As shown, the connecting rod can be positioned at the junction of the mixing tank 1 cylinder and the frustum to ensure maximum effective range. Since stirring is inconvenient in the lower space, a second stirring rod 12, matching the position of the inclined surface inside the frustum, can be installed on the connecting rod to achieve thorough stirring of the slurry in the lower space. To prevent powder or solvent from prematurely entering the discharge pipe 4 and hindering its participation in the mixing process, a shut-off valve is installed at the discharge port on the bottom surface of the frustum to prevent premature entry of powder or solvent before mixing.
[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A graphene powder slurry mixing and supply device, characterized in that, The system includes a mixing tank (1), a liquid supply tank (2) connected to the mixing tank (1), and a powder inlet (3). A discharge pipe (4) is connected to the bottom of the mixing tank (1). Solenoid valves (5) are provided on the discharge pipe (4) and the connecting pipe between the liquid supply tank (2) and the mixing tank (1). A drive rod (6) is rotatably provided on the top of the mixing tank (1). The drive rod (6) is connected to a stirring rod (7) through a torque sensor (8). The stirring rod (7) is located inside the mixing tank (1), and a stirring assembly is provided below the stirring rod (7). A motor (9) for driving the drive rod (6) to rotate is also provided on one side of the mixing tank (1). The motor (9), the two solenoid valves (5), and the torque sensor (8) are all electrically connected to the controller.
2. The graphene powder slurry mixing and supply device according to claim 1, characterized in that, The upper end of the drive rod (6) and the output shaft of the motor (9) are both fixedly equipped with pulleys, and the two pulleys are connected to each other by belt drive.
3. The graphene powder slurry mixing and supply device according to claim 1, characterized in that, An air inlet pipe (13) is connected to the upper end of the mixing tank (1), and the air inlet position of the air inlet pipe (13) on the mixing tank (1) is higher than the powder inlet position of the powder inlet (3) on the mixing tank (1).
4. The graphene powder slurry mixing and supply device according to claim 1, characterized in that, The stirring assembly includes several connecting rods disposed at the bottom end of the stirring rod (7), and each connecting rod is provided with a force-bearing plate (10) at its end.
5. The graphene powder slurry mixing and supply device according to claim 4, characterized in that, Each of the connecting rods is provided with a number of first stirring rods (11).
6. The graphene powder slurry mixing and supply device according to claim 5, characterized in that, The bottom of the mixing tank (1) is an inverted frustum. The connecting rod is located at the junction of the mixing tank (1) and the frustum. The connecting rod is also equipped with a second stirring rod (12) that matches the position of the inclined surface inside the frustum.
7. The graphene powder slurry mixing and supply device according to claim 6, characterized in that, A shut-off valve is installed at the discharge port position on the bottom surface of the frustum.