A stirring and extruding mechanism for powder oil absorption value determination

Abstract

The application relates to the technical field of material stirring and extrusion, in particular to a stirring and extrusion mechanism for powder oil absorption value determination, which comprises an extrusion plate and a connecting rod assembly, the extrusion plate is located in the interior of a rotating drum, one end of the extrusion plate is connected with the inner wall of the rotating drum through the connecting rod assembly, the other end of the extrusion plate extends to the inner wall of a fixed cylinder through a hole groove arranged on the side wall of the rotating drum and is attached to the inner wall of the fixed cylinder, the connecting rod assembly comprises a connecting rod and an elastic element, one end of the connecting rod is hinged with the extrusion plate, the other end of the connecting rod is hinged with the inner wall of the rotating drum, the elastic element is sleeved on the connecting rod or connected at the hinge joint, and the elastic element provides elastic force when the rotating drum rotates, so that the extrusion plate is always attached to the inner wall of the fixed cylinder. The application has the effect that the extrusion plate can be always attached to the inner wall of the fixed cylinder when the rotating drum rotates, so that the powder and the oil can be uniformly stirred and extruded, the powder rolling and mixing efficiency is improved, and the powder oil absorption value can be accurately determined.

Description

Technical Field

[0001] This application relates to the technical field of material mixing and extrusion, and in particular to a mixing and extrusion mechanism for determining the oil absorption value of powder. Background Technology

[0002] In industrial production, the oil absorption value of powders is one of the key parameters for evaluating the performance of powder materials, and its measurement results directly affect product quality control and production process optimization. With the continuous improvement of industrial technology, higher demands are being placed on the accuracy and efficiency of powder oil absorption value measurement. Precise oil absorption value data not only helps enterprises effectively control product quality but also provides a reliable basis for process improvement, thereby enhancing overall production efficiency and market competitiveness. In modern manufacturing systems, efficient and accurate testing methods have become an important support for ensuring smooth production processes and stable product quality.

[0003] Generally, powder extrusion relies on manual extrusion, and it is difficult to maintain a stable force and frequency, which makes it impossible for the powder and oil mixture to be fully mixed, resulting in a large measurement error, usually more than ±5%. Utility Model Content

[0004] To address the problem of significant measurement errors caused by insufficient mixing due to manual external extrusion, this application aims to provide a stirring and extrusion mechanism for determining the oil absorption value of powders. The technical solution adopted is as follows: Includes extrusion plates and connecting rod assemblies; The extrusion plate is located inside the rotating cylinder. One end of the plate is connected to the inner wall of the rotating cylinder through a connecting rod assembly, and the other end extends through a slot on the side wall of the rotating cylinder to the inner wall of the fixed cylinder and fits against the inner wall of the fixed cylinder. The connecting rod assembly includes a connecting rod and an elastic element. One end of the connecting rod is hinged to the extrusion plate, and the other end is hinged to the inner wall of the rotating cylinder. The elastic element is sleeved on the connecting rod or connected at the hinge point to provide elastic force when the rotating cylinder rotates, so that the extrusion plate is always in close contact with the inner wall of the fixed cylinder.

[0005] By adopting the above technical solution, the extrusion plate is always in close contact with the inner wall of the fixed cylinder. This ensures that the extrusion plate can continuously and evenly extrude the powder during the determination of the oil absorption value of the powder, preventing the powder from accumulating or adhering. It also makes the powder and oil mix more evenly and thoroughly, improving the accuracy and repeatability of the measurement and reducing errors. At the same time, the elastic element can adapt to the slight changes in the inner wall of the fixed cylinder, enhancing the reliability and stability of the mechanism.

[0006] Optionally, the surface of the extrusion plate is provided with a hydrophobic coating.

[0007] By adopting the above technical solution, a hydrophobic coating is applied to the surface of the extrusion plate, which can effectively reduce the adhesion of powder or oil on the plate surface, reduce the risk of contamination, facilitate cleaning and maintenance, thereby ensuring the accuracy of the test results and extending the service life of the mechanism.

[0008] Optionally, the cutting edge angle of the extrusion plate is 30°~45°.

[0009] By adopting the above technical solution, the cutting edge angle of the extrusion plate is set between 30° and 45°. This angle optimizes the shear force during the extrusion process, which can effectively break up powder agglomerates and avoid excessive damage to powder particles, thus helping to improve the accuracy and consistency of oil absorption value measurement.

[0010] Optionally, a 0.5mm thick silicone buffer layer is added to the bottom of the extrusion plate, and the contact surface between the extrusion plate and the inner wall of the fixed cylinder is clearance fit.

[0011] By adopting the above technical solution, a silicone buffer layer is added to the bottom of the extrusion plate, which can absorb the impact and vibration during extrusion and protect the powder structure from damage. At the same time, the extrusion plate and the inner wall of the fixed cylinder are fitted with a clearance, which allows slight movement, prevents jamming or wear, and improves the flexibility and durability of the mechanism.

[0012] Optionally, the slots opened on the side wall of the rotary drum are elongated slots, which are used for the extrusion plate to pass through and allow the extrusion plate to move radially.

[0013] By adopting the above technical solution, the elongated groove design on the side wall of the rotating drum allows the extrusion plate to move within the radial range, enabling it to better adapt to the contour changes of the inner wall of the fixed drum, ensuring that the extrusion plate is always in close contact, improving the uniformity of stirring and extrusion, and thus enhancing the measurement effect.

[0014] Optionally, the edge of the groove that contacts the extrusion plate is provided with a wear-resistant layer.

[0015] By adopting the above technical solution and setting a wear-resistant layer at the edge of the slot, wear caused by the movement of the extrusion plate can be reduced, the service life of the drum and the slot can be extended, the maintenance frequency and cost can be reduced, and the long-term reliability of the mechanism can be guaranteed.

[0016] Optionally, a cleaning base is provided on the top of the extrusion plate, and the cleaning base is provided with multiple air holes, which are connected to a micro air pump through air pipes.

[0017] By adopting the above technical solution, a cleaning base and air holes are set on the top of the extrusion plate, and a micro air pump is connected. The powder residue around the extrusion plate can be cleaned by airflow, realizing automated cleaning, reducing manual intervention, improving measurement efficiency and preventing cross-contamination.

[0018] Optionally, the extrusion plate is made of stainless steel, and its end that fits against the inner wall of the fixed cylinder has an arc-shaped structure to match the curvature of the inner wall of the fixed cylinder.

[0019] By adopting the above technical solution, the extrusion plate is made of stainless steel, which is corrosion-resistant and durable; its end is designed with an arc structure, which can perfectly match the curvature of the inner wall of the fixed cylinder, ensuring close contact between the extrusion plate and the inner wall, and improving the uniformity of the extrusion effect and the accuracy of measurement.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. The extrusion plate is kept in close contact with the inner wall of the fixed cylinder. This ensures that the extrusion plate can continuously and evenly extrude the powder during the determination of the oil absorption value of the powder, preventing the powder from accumulating or adhering. It also makes the powder and oil mix more evenly and thoroughly, improving the accuracy and repeatability of the measurement and reducing errors. At the same time, the elastic element can adapt to the slight changes in the inner wall of the fixed cylinder, enhancing the reliability and stability of the mechanism. 2. The specific cutting edge angle of the extrusion plate and the silicone buffer layer at the bottom optimize the extrusion effect and protect the powder structure; the key moving parts, such as the edges of the slots, have been enhanced with wear-resistant layers, and the extrusion plate and the inner wall are fitted with clearance. All of these significantly reduce the risk of wear and jamming, and extend the equipment life. 3. The extrusion plate is made of stainless steel and machined with an arc-shaped end that matches the curvature of the cylinder wall, ensuring tight contact and its own corrosion resistance. A specially integrated pneumatic cleaning system automatically blows away residual powder through air vents, which not only reduces cross-contamination and improves detection efficiency but also automates maintenance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the rotating drum, the fixed drum, and the stirring and extrusion mechanism; Figure 2 It is a cross-sectional structural diagram of the rotating drum, the fixed drum, and the stirring and extrusion mechanism; Figure 3 This is a schematic diagram of the rotating drum and the stirring and extrusion mechanism; Figure 4 This is a schematic diagram of the rotating drum; In the picture, 1. Rotating cylinder; 11. Groove; 2. Fixed cylinder; 3. Extrusion plate; 31. Cleaning base; 32. Air pores; 4. Driver components; 5. Linkage assembly; 51. Linkage; 52. Elastic element. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4This application will be described in further detail below.

[0023] A stirring and extrusion mechanism for determining the oil absorption value of powder, referring to Figure 1 and Figure 2 The device includes an extrusion plate 3 and a connecting rod assembly 5. The extrusion plate 3 is located inside the rotating drum 1. One end of the extrusion plate 3 is connected to the inner wall of the rotating drum 1 via the connecting rod assembly 5, and the other end extends through the side wall of the rotating drum 1 to the inner wall of the fixed drum 2, where it fits against the inner wall of the fixed drum 2. The connecting rod assembly 5 includes a connecting rod 51 and an elastic element 52. The elastic element 52 is sleeved on the connecting rod 51 or connected at the hinge point to provide elastic force when the rotating drum 1 rotates, ensuring that the extrusion plate 3 remains tightly fitted against the inner wall of the fixed drum 2. This structural design allows the extrusion plate 3 to effectively stir and extrude the powder during the rotation of the rotating drum 1, thereby improving the efficiency and accuracy of the powder oil absorption value determination. This is because the rotation of the rotating drum 1 drives the extrusion plate 3 to perform circumferential motion, while the elastic element 52 ensures that the extrusion plate 3 is tightly fitted against the inner wall of the fixed drum 2, enhancing the extrusion effect on the powder.

[0024] Specifically, refer to Figure 1 The rotating drum 1 can be made of a metal material such as aluminum alloy, which is lightweight and high-strength, reducing the load on the drive assembly 4. The rotating drum 1 is typically cylindrical with a hollow interior to accommodate the extrusion plate 3 and the powder. Alternatively, stainless steel can be used, as it has good corrosion resistance and extends the service life of the drum 1. The rotating drum 1 can be connected to the drive assembly 4 via a coupling, ensuring synchronous rotation between them. Another alternative connection method is belt drive, which provides cushioning and shock absorption.

[0025] Furthermore, the fixed cylinder 2 is generally made of high-strength steel, which can withstand the compressive force of the extrusion plate 3, ensuring the stability of the structure. The fixed cylinder 2 is also cylindrical, with its inner diameter slightly larger than the outer diameter of the rotating cylinder 1, ensuring that the rotating cylinder 1 can rotate freely within it. The fixed cylinder 2 can also be made of cast iron, which has good wear resistance and compressive strength. The fixed cylinder 2 can be installed on the workbench using bolts, which ensures the stability of its position.

[0026] Furthermore, the surface of the extrusion plate 3 is provided with a hydrophobic coating, which can be a nano-ceramic superhydrophobic coating. This coating can effectively prevent powder and oil from adhering to the surface of the extrusion plate 3, making it easy to clean. The alternative coating for the extrusion plate 3 can also be a polytetrafluoroethylene (PTFE) coating, which also has good anti-stick properties.

[0027] Furthermore, the cutting edge angle of the extrusion plate 3 is 30°~45°, and this sharp angle design enhances the extrusion effect on the powder. A 0.5mm thick silicone buffer layer is added to the bottom of the extrusion plate 3, which acts as a buffer to reduce wear between the extrusion plate 3 and the inner wall of the fixed cylinder 2. The contact surface between the extrusion plate 3 and the inner wall of the fixed cylinder 2 is a clearance fit, ensuring smooth sliding of the extrusion plate 3 within the fixed cylinder 2. The extrusion plate 3 is made of stainless steel, and its end that contacts the inner wall of the fixed cylinder 2 has an arc-shaped structure to match the curvature of the inner wall of the fixed cylinder 2. This arc-shaped structure allows for better contact between the extrusion plate 3 and the inner wall of the fixed cylinder 2, improving the extrusion effect.

[0028] Furthermore, refer to Figure 3 The top of the extrusion plate 3 is provided with a cleaning base 31, and the cleaning base 31 is provided with multiple air holes 32. The air holes 32 are connected to a micro air pump through an air pipe. When the micro air pump is working, the airflow is sprayed out from the air holes 32, which can blow off the residual powder adhering to the surface of the extrusion plate 3.

[0029] Furthermore, refer to Figure 2 The connecting rod 51 in the connecting rod assembly 5 is typically made of carbon steel, which has high strength and toughness. The connecting rod 51 is rod-shaped, with its two ends hinged to the extrusion plate 3 and the inner wall of the rotating cylinder 1, respectively. Alternatively, the connecting rod 51 can be made of titanium alloy, which has the advantages of being lightweight and having high strength. The elastic element 52 can be a spring, which is sleeved on the connecting rod 51 or connected to the hinge point. When the rotating cylinder 1 rotates, the spring provides elastic force, keeping the extrusion plate 3 firmly against the inner wall of the fixed cylinder 2. Alternatively, the elastic element 52 can be made of rubber elastomer, which also provides elastic force.

[0030] Furthermore, referring to 3 and 4, the slot 11 opened on the side wall of the rotating drum 1 is an elongated slot 11. The elongated slot 11 is used for the extrusion plate 3 to pass through and allows the extrusion plate 3 to move radially, thus accommodating the positional changes of the extrusion plate 3 during rotation. The edge of the slot 11 in contact with the extrusion plate 3 is provided with a wear-resistant layer. The wear-resistant layer can be a hard alloy layer. Hard alloy has good wear resistance and can reduce the wear of the edge of the slot 11.

[0031] The implementation principle of this embodiment is as follows: the drive assembly 4 drives the rotating drum 1 to rotate, and the rotating drum 1 drives the extrusion plate 3 to make circumferential motion through the connecting rod assembly 5. Under the action of the elastic element 52, the extrusion plate 3 is always in close contact with the inner wall of the fixed drum 2, stirring and extruding the powder in the fixed drum 2. During the stirring and extrusion process, the hydrophobic coating on the extrusion plate 3 can prevent the powder and oil from adhering, and the air holes 32 on the cleaning base 31 can blow away residual powder under the action of the micro air pump. The elongated slots 11 and wear-resistant layer on the side wall of the rotating drum 1 ensure the normal movement of the extrusion plate 3 and reduce wear. This structural design improves the efficiency and accuracy of powder oil absorption value determination, reduces interference from human factors, reduces component wear, and extends the service life of the device. Compared with the traditional manual measurement method, it has obvious advantages and meets the needs of modern industrial production for efficient and accurate detection.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stirring and extrusion mechanism for determining the oil absorption value of powder, characterized in that, Includes an extrusion plate (3) and a connecting rod assembly (5); The extrusion plate (3) is located inside the rotating cylinder (1). One end of it is connected to the inner wall of the rotating cylinder (1) through the connecting rod assembly (5), and the other end extends through the slot (11) opened on the side wall of the rotating cylinder (1) to the inner wall of the fixed cylinder (2) and fits against the inner wall of the fixed cylinder (2). The connecting rod assembly (5) includes a connecting rod (51) and an elastic element (52). One end of the connecting rod (51) is hinged to the extrusion plate (3), and the other end is hinged to the inner wall of the rotating cylinder (1). The elastic element (52) is sleeved on the connecting rod (51) or connected at the hinge point to provide elastic force when the rotating cylinder (1) rotates, so that the extrusion plate (3) is always in close contact with the inner wall of the fixed cylinder (2).

2. The stirring and extrusion mechanism for determining the oil absorption value of powder according to claim 1, characterized in that, The surface of the extrusion plate (3) is provided with a hydrophobic coating.

3. The stirring and extrusion mechanism for determining the oil absorption value of powder according to claim 1, characterized in that, The cutting edge angle of the extrusion plate (3) is 30°~45°.

4. The stirring and extrusion mechanism for determining the oil absorption value of powder according to claim 1, characterized in that, The bottom of the extrusion plate (3) is fitted with a 0.5mm thick silicone buffer layer, and the contact surface between the extrusion plate (3) and the inner wall of the fixed cylinder (2) is clearance fit.

5. The stirring and extrusion mechanism for determining the oil absorption value of powder according to claim 1, characterized in that, The slot (11) opened on the side wall of the rotating drum (1) is an elongated slot (11) for the extrusion plate (3) to pass through and allow the extrusion plate (3) to move radially.

6. The stirring and extrusion mechanism for determining the oil absorption value of powder according to claim 5, characterized in that, The edge of the groove (11) is provided with a wear-resistant layer in contact with the extrusion plate (3).

7. The stirring and extrusion mechanism for determining the oil absorption value of powder according to claim 1, characterized in that, The top of the extrusion plate (3) is provided with a cleaning base (31), and the cleaning base (31) is provided with a plurality of air holes (32), which are connected to a micro air pump through air pipes.

8. The stirring and extrusion mechanism for determining the oil absorption value of powder according to claim 1, characterized in that, The extrusion plate (3) is made of stainless steel, and its end that fits against the inner wall of the fixed cylinder (2) has an arc-shaped structure to match the curvature of the inner wall of the fixed cylinder (2).

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