Repose angle testing device for laboratory spherical powder

Abstract

A laboratory spherical powder repose angle testing device comprises a material bearing assembly and a power assembly, the power assembly is connected with the material bearing assembly and provides power for the material bearing assembly, and the power assembly and the material bearing assembly are installed on a supporting assembly. According to the testing method, the angle and the degree of the material are tested through the protractor after the material is turned to be stable for a period of time, so that the repose angle of the material is obtained, and the repose angle testing device aims at solving the problem that in the prior art, the repose angle of spherical powder, especially fine powder particles, does not have a measuring method and comparability. The repose angle testing device and the testing method for confirming the repose angle testing device are designed, the testing device is low in price and cost, the researched detection is easy to operate, the repose angle is tested in a rotating and rolling mode, the rolling stability and contrast of materials are enhanced, and reliable data are provided for research, development and production personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of material determination, in particular to a repose angle testing device for spherical powder in a laboratory. Background Art

[0002] The angle of repose, also known as the angle of repose, is the minimum angle between the inclined plane and the horizontal surface when the object placed on it is in a critical state of sliding down the inclined plane (that is, as the inclination angle increases, the object on the inclined plane will slide more easily; when the object reaches the state where it starts to slide, the angle of this critical state is called the angle of repose).

[0003] For companies producing spherical powders, studying the angle of repose of various spherical products is crucial for further studying the fluidity of powders, guiding the production process design of material storage, and optimizing the performance determination of material fluidity.

[0004] There are two methods for measuring the angle of repose:

[0005] The first method is injection method: the powder is slowly added from the top of the funnel, and the material leaking from the bottom of the funnel forms a cone-shaped accumulation at an inclination angle on the horizontal plane.

[0006] The second method is the discharge method: add the powder into a cylindrical container and keep the bottom of the cylinder horizontal. When the powder flows out from the center hole at the bottom of the cylinder, the inclination angle of the inverse cone-shaped residual powder accumulation formed in the cylinder is

[0007] Both of these angles of repose are angles of repose, and the tilt method is sometimes used. A cylindrical container rotating slowly about a horizontal axis is filled with powder, filling it to 1 / 2 to 1 / 3 of its volume. When the powder surface begins to slide, the tilt angle is measured. The smaller the angle of repose, the less friction and the better the flowability. Generally, a value of θ ≤ 30 degrees provides good flowability, while a value of θ ≤ 40 degrees satisfies the flowability requirements of the production process.

[0008] The two methods currently used for testing can both test spherical powders, but both have limitations. The injection method can still be used to test large spherical powder particles, but for large particles with too good fluidity, the material flowing out of the funnel tends to be flat and there is no contrast. However, for fine powders with relatively poor fluidity and relatively sticky materials, it is difficult for the material to fall from the funnel, so there is a blind spot in the test.

[0009] Therefore, in response to the above problems, a rotating and rolling device was developed to test the angle of repose, which provides an effective and stable data source for guiding the production process and improving the material fluidity of researchers. Utility Model Content

[0010] In view of the above technical problems, the utility model provides a laboratory spherical powder angle of repose test device, which provides an effective and stable data source for guiding production processes and improving material fluidity for researchers.

[0011] To achieve the above purpose, the technical solution of the utility model is as follows:

[0012] A laboratory spherical powder angle of repose test device, characterized by comprising a material carrying component and a power component, wherein the power component is connected to the material carrying component to increase the power of the material carrying component, and the power component and the material carrying component are installed on a support component.

[0013] The support assembly consists of a fixed bracket and a movable bracket. One end of the fixed bracket is movably connected to the movable bracket, and the other end of the fixed bracket is connected to a lock provided on the movable bracket.

[0014] The material carrying assembly includes a turntable, which is composed of a plastic round box and a reinforced outer frame. The inner part of the reinforced outer frame is provided with a groove for snap-fit connection to the plastic round box.

[0015] The power assembly consists of a motor, a tugwheel and a pressure wheel. The motor is installed on a fixed bracket and is connected to the reinforced outer frame through a transmission assembly to control the rotation of the reinforced outer frame. The upper end of the reinforced outer frame is connected to the pressure wheel installed on the movable bracket, and the lower end of the reinforced outer frame is connected to the tugwheels installed on the fixed bracket on both sides.

[0016] Specifically, the plastic round box can be opened to hold materials and is made of highly transparent material so that the state of the materials inside can be observed.

[0017] Specifically, the reinforced outer frame is made of stainless steel, and a plastic round box is detachably installed inside the frame.

[0018] Specifically, the two tug wheels and the pressure wheel are installed on the same plane and distributed in a triangle shape to ensure stable rotation and rolling of the turntable.

[0019] Beneficial effects of the utility model:

[0020] The detection device for testing the angle of repose designed by the utility model has a simple overall structure, a low price and is easy to operate during research and testing;

[0021] The utility model adopts a rotation and rolling method to test the angle of repose of spherical product materials. A pressure wheel is provided on the upper side of the turntable and support wheels are provided on both sides below the turntable. The two pullers and the pressure wheel are distributed in a triangular structure, which enhances the stability of the turntable during rotation, that is, enhances the rolling stability and contrast of the material, verifies the reliability of the test data, and provides reliable data for R&D and production personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a laboratory spherical powder angle of repose test device according to the present invention;

[0023] Figure 2 Schematic diagram of the angle of repose of the present invention;

[0024] As shown in the figure: 11. Fixed bracket, 12. Movable bracket, 121. Lock, 21. Plastic round box, 22. Reinforced outer frame, 3. Motor, 4. Puller, 5. Pressure roller. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] As shown in the figure, the device for testing the angle of repose of spherical products includes a material carrying component, which is a turntable. The turntable is composed of an internal detachable plastic round box 51 and an external reinforced outer frame 22 made of stainless steel. The plastic round box 21 has a sealed buckle and can be opened to load materials. The plastic round box 21 is light and well sealed. It uses a highly transparent material to facilitate observation of the internal material status, and a reinforcement sleeve is provided on the outside. The reinforced outer frame 22 is made of stainless steel and has a groove inside for connecting the plastic round box 21 with a buckle.

[0030] The test device also includes a power component. 3 in the power component is a motor that provides power for the turntable to rotate. The two tugwheels 4 and the pressure wheel 5 connected to the reinforced outer frame 22 are installed in a triangular structure. The triangular structure firmly and stably keeps the turntable, i.e., the material holding box, rotating in a plane, ensuring the stable rotation and rolling of the plastic round box 21, so that the material inside rotates and rolls.

[0031] The power assembly is installed on the support assembly, and the support assembly consists of a fixed bracket 11 with a fixed lower part and an openable movable bracket with a lock 121 on the upper part. The end of the movable bracket 12 that is movably connected to the fixed bracket 11 can be connected by a rotating shaft or a hinge. After the turntable loaded with materials is placed, the movable bracket 12 can be dropped and locked to the fixed bracket by the lock 121.

[0032] The motor 3 is connected to the turntable through a transmission assembly, for example, a transmission assembly consisting of a roller and a belt, or a transmission assembly consisting of a chain and a sprocket. The motor 3 controls the movement of the turntable, and the motor 3 can control the speed and frequency setting.

[0033] Example 2

[0034] During the test, the spherical powder to be tested is first poured into the plastic round box 21, and the plastic round box 21 is covered and sealed, and then the plastic round box 21 is inserted into the reinforced outer frame 22. The plastic round box 21 and the reinforced outer frame 22 form a complete turntable.

[0035] Then place the turntable on the two tugboats 4, drop the movable bracket 12, and close it with the fixed bracket 11, so that the pressure wheel 5 on the movable bracket 12 is pressed on the turntable, and then lock the lock buckle 121 of the movable bracket 12 with the fixed bracket 11;

[0036] After the above steps are completed, the device is powered on and the motor 3 is started. The motor 3 provides power to the turntable and the turntable starts to rotate. After waiting for 30 seconds, the power is turned off and the test is performed after the turntable is stable. The operator then uses a protractor to measure the angle of the material and obtain the angle of repose of the material. The reading method of the angle of repose is as shown in the attached figure. Figure 2 shown.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of 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. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in this utility model is defined by the appended claims and their equivalents.

Claims

1. A laboratory spherical powder angle of repose test device, characterized in that Includes material carrying components and A power component, which is connected to the material carrying component to increase the power of the material carrying component. The power assembly and the material carrying assembly are installed on the support assembly.

2. A laboratory spherical powder angle of repose test device according to claim 1, characterized in that The support assembly consists of a fixed bracket and a movable bracket. One end of the fixed bracket is movable with the movable bracket. The other end of the fixed bracket is connected to the lock provided on the movable bracket.

3. A laboratory spherical powder angle of repose test device according to claim 2, characterized in that The material carrying assembly includes a turntable, which is composed of a plastic round box and a reinforced outer frame. The interior of the solid outer frame is provided with a groove for snap-fit connection to the plastic round box.

4. A laboratory spherical powder angle of repose test device according to claim 3, characterized in that The power assembly consists of a motor, a tugwheel and a pressure wheel. The motor is installed on a fixed bracket. The motor is connected to the reinforced outer frame through a transmission assembly to control the rotation of the reinforced outer frame. The upper end of the reinforced outer frame is connected to the pressure wheel installed on the movable bracket, and the lower ends of the reinforced outer frame are connected to the mounting brackets on both sides. Tugboat connection on fixed support.

5. The apparatus for testing the angle of repose of a spherical powder in a laboratory according to claim 3, characterized in that The plastic round box can be opened to hold materials and is made of highly transparent material.

6. A laboratory spherical powder angle of repose test device according to claim 3, characterized in that The reinforced outer frame is made of stainless steel, and a plastic round box can be detachably installed inside the frame.

7. A laboratory spherical powder angle of repose test device according to claim 4, characterized in that The two tugboats and the pressure wheel are installed on the same plane and distributed in a triangle shape.

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