Powder fluidity testing device and method

Abstract

The invention relates to the technical field of flowability testing, and discloses a powder flowability testing device and method.The powder flowability testing device comprises a base and further comprises an L-shaped frame, the vertical edge of the L-shaped frame is vertically and fixedly installed on the top of the base, the transverse edge of the L-shaped frame is fixedly connected with a funnel in a sleeved mode, and a solenoid valve is installed on a discharging port of the funnel; the testing assembly is arranged on the L-shaped frame, and the testing assembly is used for testing the flowability of the powder in the funnel; and the circulating conveying assembly is arranged on the top of the base, and the circulating conveying assembly is used for circularly conveying the powder. The powder in the funnel is ensured to be in a consistent state during each test, so that the fluidity test of the powder is more accurate and reliable, errors possibly caused by non-uniform distribution of the powder can be effectively eliminated through the accurate powder arrangement and homogenization treatment, the stability of each detection result is ensured, and the test efficiency is improved. And thus, the test accuracy of the powder is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluidity testing, and particularly relates to a fluidity testing device and method for powder materials. Background Art

[0002] Powder materials refer to a class of substances in the form of powder. According to their sources and applications, the types and properties of powder materials vary, and usually can include metal powders, mineral powders, chemical powders, food powders, etc. Powder materials are widely used in various industries, especially in manufacturing, chemical industry, food processing, medicine and other fields. Fluidity is one of the important parameters of many powders, and it is measured by the time for a certain amount of powder to completely pass through a hole of a certain diameter.

[0003] For example, a kaolin powder material fluidity testing device disclosed in the patent with the publication number CN212340919U can test the fluidity of powder materials, but it does not have the function of continuously testing multiple times, resulting in the occurrence of contingency with only one test. And if the powder on the top of the funnel accumulates unevenly, it means that the distribution of the powder is uneven. This uneven distribution will cause the flow rate of the powder in the funnel to be inconsistent, thereby affecting the result of the fluidity test and reducing the accuracy of the test. Therefore, it is urgent to design a fluidity testing device for powder materials. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to provide a fluidity testing device and method for powder materials.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A fluidity testing device for powder materials, including a base, further comprising: An L-shaped frame, the vertical side of the L-shaped frame is vertically fixedly installed on the top of the base, the horizontal side of the L-shaped frame is fixedly sleeved with a funnel, and a solenoid valve is installed at the discharge port of the funnel; A testing component, the testing component is arranged on the L-shaped frame, and the testing component is used to test the fluidity of the powder inside the funnel; A circulating conveying component, the circulating conveying component is arranged on the top of the base, and the circulating conveying component is used to convey the powder in a cycle.

[0006] As a further technical solution of the present invention, the circulating conveying component includes: vertical plates, there are two vertical plates, and both vertical plates are vertically fixedly installed on the top of the base, and two round rollers are rotatably installed on the inner side of each vertical plate. A conveyor belt is sleeved on the surfaces of the four round rollers, and limit plates for limiting the top and both sides of the conveyor belt are arranged on the sides of the two vertical plates.

[0007] As a further technical solution of the present invention, a driving motor is fixedly installed on the outer side of the corresponding vertical plate, and the output shaft of the driving motor is installed at the center of the end face of the corresponding round roller. Four limiting rods are fixedly installed on each vertical plate. The limiting rods are grouped in pairs, and each group of limiting rods is used to limit between the corresponding conveyor belt and the round roller.

[0008] As a further technical solution of the present invention, four uniformly distributed rotating shafts are horizontally rotatably installed on the outer side of the conveyor belt, and a first gear is fixedly sleeved on the surface of each rotating shaft. A barrel body is fixedly installed at the end of each rotating shaft. A second fixed plate is fixedly installed between the tops of the two vertical plates. A rack is horizontally and fixedly installed at the bottom of the second fixed plate. When the rack contacts the first gear, the rack and the first gear mesh, and the contact between the rack and the first gear can make the first gear rotate one circle.

[0009] As a further technical solution of the present invention, convex teeth are fixedly installed on the inner side of the conveyor belt, and there are multiple convex teeth. The multiple convex teeth are divided into four groups, and the four groups of convex teeth are evenly distributed on the inner side of the conveyor belt.

[0010] As a further technical solution of the present invention, a first fixed plate is horizontally and fixedly installed on the back of the two vertical plates, and a second gear is horizontally rotatably arranged below the first fixed plate. A one-way bearing is sleeved on the second gear, and a rotating rod is fixedly installed on the inner ring of the one-way bearing.

[0011] As a further technical solution of the present invention, the top of the rotating rod passes through the first fixed plate, and the surface of the rotating rod is rotatably sleeved inside the inner wall of the first fixed plate. A torsion spring is sleeved on the surface of the rotating rod, and both ends of the torsion spring are respectively fixedly installed at the bottom of the first fixed plate and the top of the second gear.

[0012] As a further technical solution of the present invention, a turntable is fixedly installed at the top end of the rotating rod, and a plurality of spring rods evenly distributed in a ring are horizontally fixed on the surface of the turntable. The telescopic end of each spring rod is fixedly installed with an impact ball, and the impact ball can contact the funnel.

[0013] As a further technical solution of the present invention, the test assembly includes: a timer, which is fixedly installed on the outer side of the vertical side of the L-shaped frame. A camera is fixedly installed inside the vertical side of the L-shaped frame, and the camera is used to detect the powder feeding inside the funnel. The camera is electrically connected to the timer.

[0014] A method for using a powder fluidity testing device includes the following steps: S1: First, put the powder inside the corresponding barrel, then start the driving motor to drive the roller to rotate, the rotation of the roller drives the conveyor belt to rotate, the rotation of the conveyor belt drives the shaft to follow the conveyor belt, the movement of the shaft drives the first gear and the barrel to move, when the barrel containing the powder moves to the upper horizontal edge of the conveyor belt, the first gear on it will contact the rack and drive the first gear to rotate, the rotation of the first gear drives the shaft to rotate, the rotation of the shaft drives the barrel to rotate, the rotation of the barrel will cause the powder inside to pour into the funnel, the meshing of the first gear and the rack will only make the first gear rotate one circle, and the first gear is rotated 180 degrees first to ensure that all the powder inside the barrel enters the funnel without leaving any residue; S2: In addition, when the conveyor belt rotates, it will also drive the four sets of convex teeth to rotate. When the convex teeth and the second gear are in contact, the second gear will be driven to rotate. At this time, the rotation of the second gear will not drive the rotating rod to rotate through the one-way bearing, but the rotation of the second gear at this time will cause the torsion spring to generate torque. This torque will continue to accumulate to form a stored force until all the powder inside the barrel enters the funnel. The convex teeth and the second gear are separated, and the torque generated by the torsion spring will cause the second gear to rotate in the opposite direction. At this time, the rotation of the second gear will drive the rotating rod to rotate through the one-way bearing, and the rotation of the rotating rod will drive the rotating disk to rotate. The spring rod of the rotating disk rotates, and the rotation of the spring rod drives the impact ball to rotate. The impact ball will hit the funnel. The purpose of this process is to ensure that the powder inside the funnel is in a consistent state each time it is tested, so that the fluidity test of the powder is more accurate and reliable. Through this precise powder sorting and homogenization treatment, the errors that may be caused by uneven distribution of powder can be effectively eliminated, the stability of each test result can be guaranteed, and it is helpful to improve the accuracy of powder testing; S3: Finally, the solenoid valve starts the funnel to start unloading. During the unloading process, the camera will monitor the flow of the powder in real time, and start the timer when the powder is detected to test the fluidity of the powder. The powder can be tested continuously by reciprocating in sequence, avoiding the situation where a single test of the powder fluidity is not accurate enough. This cyclic detection method effectively improves the use effect of the equipment and the accuracy of the test results.

[0015] The beneficial effects of the present invention are: Firstly, the present invention ensures that the powder inside the hopper maintains a consistent state each time it is tested by setting the testing component and the circulating conveying component, so that the fluidity test of the powder is more accurate and reliable. Through such precise powder arrangement and homogenization treatment, the error that may be caused by the uneven distribution of the powder can be effectively eliminated, the stability of each test result is ensured, and the test accuracy of the powder is improved. Second, in the present invention, through the setting of the circulating conveying component, the fluidity of the powder can be tested, and the powder can be continuously detected by reciprocating in sequence, avoiding the inaccurate situation of single detection of the fluidity of the powder. This circulating detection method effectively improves the use effect of the equipment and the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of a device for testing the fluidity of a powder proposed by the present invention; Figure 2 FIG. is a rear view structural diagram of a device for testing the fluidity of a powder proposed by the present invention; Figure 3 FIG. is a schematic structural diagram of a device for testing the fluidity of a powder proposed by the present invention after removing part of the barrel; Figure 4 is Figure 3 an enlarged schematic view of part A in Figure 5 FIG. is a schematic structural diagram of a conveyor belt and convex teeth of a device for testing the fluidity of a powder proposed by the present invention; Figure 6 is Figure 5 an enlarged schematic view of part B in Figure 7 FIG. is a schematic structural diagram of a conveyor belt of a device for testing the fluidity of a powder proposed by the present invention.

[0017] In the figure: 1, base; 2, L-shaped frame; 3, funnel; 4, timer; 5, barrel; 6, vertical plate; 7, turntable; 8, spring rod; 9, impact ball; 10, conveyor belt; 11, round roller; 12, limiting rod; 13, first fixing plate; 14, second fixing plate; 15, driving motor; 16, rotating rod; 17, rack; 18, rotating shaft; 19, first gear; 20, camera; 21, convex teeth; 22, torsion spring; 23, one-way bearing; 24, second gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to the attached Figure 1 - attachedFigure 7 , a fluidity testing device for powder materials, including a base 1, and further comprising: an L-shaped frame 2, a testing component, and a circulating conveying component. The vertical side of the L-shaped frame 2 is vertically and fixedly installed on the top of the base 1. A funnel 3 is fixedly sleeved on the horizontal side of the L-shaped frame 2, and an electromagnetic valve is installed at the discharge port of the funnel 3. The testing component is arranged on the L-shaped frame 2 and is used for testing the fluidity of the powder material inside the funnel 3. The circulating conveying component is arranged on the top of the base 1 and is used for circulating the conveying of the powder material; As described above, it can test the fluidity of the powder material, and can continuously detect the powder material by reciprocating in sequence, avoiding the inaccurate situation of single detection of the fluidity of the powder material. This cyclic detection method effectively improves the use effect of the equipment and the accuracy of the detection result.

[0021] Please refer to the appendix Figure 1 - appendix Figure 7, in a preferred embodiment, the cyclic conveying assembly includes: vertical plates 6, there are two vertical plates 6, and the two vertical plates 6 are vertically and fixedly installed on the top of the base 1, and two rollers 11 are rotatably installed on the inner side of each vertical plate 6. A conveyor belt 10 is sleeved on the surfaces of the four rollers 11, and limit plates for limiting the top and both sides of the conveyor belt 10 are provided on the sides of the two vertical plates 6. A driving motor 15 is fixedly installed on the outer side of the corresponding vertical plate 6, and the output shaft of the driving motor 15 is installed at the center of the end face of the corresponding roller 11. Four limit rods 12 are fixedly installed on each vertical plate 6. The limit rods 12 are grouped in pairs, and each group of limit rods 12 is used to limit between the corresponding conveyor belt 10 and the roller 11. Four uniformly distributed rotating shafts 18 are horizontally rotatably installed on the outer side of the conveyor belt 10, and a first gear 19 is fixedly sleeved on the surface of each rotating shaft 18. A barrel 5 is fixedly installed at the end of each rotating shaft 18. A second fixing plate 14 is fixedly installed between the tops of the two vertical plates 6. A rack 17 is horizontally and fixedly installed at the bottom of the second fixing plate 14. When the rack 17 contacts the first gear 19, the rack 17 and the first gear 19 are meshed, and the contact between the rack 17 and the first gear 19 can make the first gear 19 rotate one circle. Convex teeth 21 are fixedly installed on the inner side of the conveyor belt 10, and there are multiple convex teeth 21. The multiple convex teeth 21 are divided into four groups, and the four groups of convex teeth 21 are uniformly distributed on the inner side of the conveyor belt 10. A first fixing plate 13 is horizontally and fixedly installed on the back of the two vertical plates 6. A second gear 24 is horizontally rotatably arranged below the first fixing plate 13. A one-way bearing 23 is sleeved on the second gear 24, and a rotating rod 16 is fixedly installed on the inner ring of the one-way bearing 23. The top of the rotating rod 16 passes through the first fixing plate 13, and the surface of the rotating rod 16 is rotatably sleeved inside the inner wall of the first fixing plate 13. A torsion spring 22 is sleeved on the surface of the rotating rod 16, and both ends of the torsion spring 22 are fixedly installed on the bottom of the first fixing plate 13 and the top of the second gear 24 respectively. A turntable 7 is fixedly installed at the top end of the rotating rod 16, and a plurality of spring rods 8 are horizontally and fixedly arranged on the surface of the turntable 7 in a circumferentially uniform manner. An impact ball 9 is fixedly installed at the telescopic end of each spring rod 8, and the impact ball 9 can contact the funnel 3; Preferably, ensure that the powder in the funnel 3 is in a consistent state every time the test is conducted, so that the fluidity test of the powder is more accurate and reliable. Through this precise powder sorting and homogenization process, the errors that may be caused by the uneven distribution of the powder can be effectively eliminated, the stability of each detection result can be guaranteed, and it helps to improve the test accuracy of the powder.

[0022] Please refer to the appendix Figure 1 - appendix Figure 6 , in a preferred embodiment, the test assembly includes: a timer 4, the timer 4 is fixedly installed on the outer side of the vertical side of the L-shaped frame 2, and a camera 20 is fixedly installed on the inner side of the vertical side of the L-shaped frame 2, and the camera 20 is used to detect the powder feeding in the funnel 3. The camera 20 and the timer 4 are electrically connected; Furthermore, the electromagnetic valve starts the funnel 3 to start unloading. During the unloading process, the camera 20 will monitor the flow of the powder in real time and start the timer 4 when the unloading of the powder is detected.

[0023] The working principle of the present invention is as follows: firstly, the powder is placed inside the corresponding barrel 5, and then the driving motor 15 is started to drive the round roller 11 to rotate, the rotation of the round roller 11 drives the conveyor belt 10 to rotate, the rotation of the conveyor belt 10 drives the rotating shaft 18 to follow the conveyor belt 10 to move, the movement of the rotating shaft 18 drives the first gear 19 and the barrel 5 to move, when the barrel 5 filled with the powder moves to the upper horizontal edge of the conveyor belt 10, the first gear 19 thereon will contact the rack 17 and drive the first gear 19 to rotate, the rotation of the first gear 19 drives the rotating shaft 18 to rotate, the rotation of the rotating shaft 18 drives the barrel 5 to rotate, the rotation of the barrel 5 will cause the powder inside thereof to pour into the funnel 3, it should be noted that the meshing of the first gear 19 and the rack 17 will only cause the first gear 19 to rotate one circle, and the first gear 19 is first rotated 180 degrees to ensure that all the powder inside the barrel 5 enters the funnel 3 without leaving any residue; In addition, when the conveyor belt 10 rotates, it will also drive the four sets of convex teeth 21 to rotate. When the convex teeth 21 contact the second gear 24, it will drive the second gear 24 to rotate. At this time, the rotation of the second gear 24 will not drive the rotating rod 16 to rotate through the one-way bearing 23, but the rotation of the second gear 24 at this time will cause the torsion spring 22 to generate torque, and this torque will continue to accumulate to form a stored force until all the powder inside the barrel body 5 enters the inside of the funnel 3, and the convex teeth 21 and the second gear 24 are separated. Then the torque generated by the torsion spring 22 will cause the second gear 24 to rotate in the opposite direction. At this time, the rotation of the second gear 24 will drive the rotating rod 16 to rotate through the one-way bearing 23. The bearing 23 drives the rotating rod 16 to rotate, the rotating rod 16 drives the rotating disk 7 to rotate, the rotating disk 7 drives the spring rod 8 to rotate, the rotating spring rod 8 drives the impact ball 9 to rotate, and the impact ball 9 will hit the funnel 3. The purpose of this process is to ensure that the powder inside the funnel 3 is kept in a consistent state each time it is tested, so that the fluidity test of the powder is more accurate and reliable. Through this precise powder arrangement and homogenization treatment, the error caused by the uneven distribution of the powder can be effectively eliminated, the stability of each test result is guaranteed, and it is helpful to improve the accuracy of the powder test; Finally, the solenoid valve starts the funnel 3 to start unloading. During the unloading process, the camera 20 will monitor the flow of the powder in real time, and start the timer 4 when the powder unloading is detected. In summary, the fluidity of the powder can be tested, and the powder can be tested continuously by reciprocating in sequence, avoiding the situation that a single test of the powder fluidity is not accurate enough. This cyclic detection method effectively improves the use effect of the equipment and the accuracy of the test results.

[0024] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fluidity testing device for powder materials, comprising a base (1), characterized in that, Further included are: An L-shaped frame (2), the vertical side of the L-shaped frame (2) is vertically and fixedly installed on the top of the base (1), a funnel (3) is fixedly sleeved on the horizontal side of the L-shaped frame (2), and a solenoid valve is installed at the discharge port of the funnel (3); A testing assembly, the testing assembly is arranged on the L-shaped frame (2), and the testing assembly is used to test the fluidity of the powder inside the funnel (3); A circulating conveying assembly, the circulating conveying assembly is arranged on the top of the base (1), and the circulating conveying assembly is used to convey the powder in a cycle.

2. The fluidity testing device for powder materials according to claim 1, wherein, The circulating conveying assembly includes: vertical plates (6), there are two vertical plates (6), and both vertical plates (6) are vertically and fixedly installed on the top of the base (1), and two round rollers (11) are rotatably installed on the inner side of each vertical plate (6), a conveyor belt (10) is sleeved on the surfaces of the four round rollers (11), and limit plates for limiting the top and both sides of the conveyor belt (10) are arranged on the sides of the two vertical plates (6).

3. The fluidity testing device for powder materials according to claim 2, characterized in that, A driving motor (15) is fixedly installed on the outer side of the corresponding vertical plate (6), and the output shaft of the driving motor (15) is installed at the center of the end face of the corresponding round roller (11), four limiting rods (12) are fixedly installed on each vertical plate (6), the limiting rods (12) are grouped in pairs, and each group of limiting rods (12) is used to limit between the corresponding conveyor belt (10) and the round roller (11).

4. The fluidity testing device for powder materials according to claim 3, characterized in that, Four uniformly distributed rotating shafts (18) are horizontally rotatably installed on the outer side of the conveyor belt (10), and a first gear (19) is fixedly sleeved on the surface of each rotating shaft (18), a barrel (5) is fixedly installed at the end of each rotating shaft (18), a second fixing plate (14) is fixedly installed between the tops of the two vertical plates (6), a rack (17) is horizontally and fixedly installed at the bottom of the second fixing plate (14), when the rack (17) contacts the first gear (19), the rack (17) and the first gear (19) are meshed, and the contact between the rack (17) and the first gear (19) can make the first gear (19) rotate one circle.

5. The fluidity testing device for powder materials according to claim 4, wherein, Convex teeth (21) are fixedly installed on the inner side of the conveyor belt (10), and there are multiple convex teeth (21), the multiple convex teeth (21) are divided into four groups, and the four groups of convex teeth (21) are evenly distributed on the inner side of the conveyor belt (10).

6. The fluidity testing device for powder materials according to claim 5, characterized in that, A first fixing plate (13) is horizontally and fixedly installed on the back of the two vertical plates (6), and a second gear (24) is horizontally rotatably arranged below the first fixing plate (13), a one-way bearing (23) is sleeved on the second gear (24), and a rotating rod (16) is fixedly installed on the inner ring of the one-way bearing (23).

7. The fluidity testing device for powder materials according to claim 6, characterized in that, The top of the rotating rod (16) passes through the first fixing plate (13), and the surface of the rotating rod (16) is rotatably sleeved inside the inner wall of the first fixing plate (13), a torsion spring (22) is sleeved on the surface of the rotating rod (16), and both ends of the torsion spring (22) are respectively fixedly installed on the bottom of the first fixing plate (13) and the top of the second gear (24).

8. A fluidity testing device for powder materials according to claim 7, characterized in that, A rotating disk (7) is fixedly mounted on the top of the rotating rod (16), and a plurality of spring rods (8) evenly distributed in an annular shape are horizontally fixed on the surface of the rotating disk (7). An impact ball (9) is fixedly mounted on the telescopic end of each of the spring rods (8), and the impact ball (9) can contact the funnel (3).

9. The fluidity testing device for powder materials according to claim 8, wherein, The test assembly comprises: a timer (4), the timer (4) being fixedly mounted on the outside of a vertical side of an L-shaped frame (2), a camera (20) being fixedly mounted on the inside of the vertical side of the L-shaped frame (2), and the camera (20) being used to detect the discharge of powder material inside the funnel (3), and the camera (20) and the timer (4) being electrically connected.

10. The method for using a fluidity testing device for powder materials according to claim 9, wherein, The following steps are involved: S1: First, the powder is placed inside the corresponding barrel (5), and then the driving motor (15) is started to drive the round roller (11) to rotate. The rotation of the round roller (11) drives the conveyor belt (10) to rotate. The rotation of the conveyor belt (10) drives the rotating shaft (18) to move along with the conveyor belt (10). The movement of the rotating shaft (18) drives the first gear (19) and the barrel (5) to move. When the barrel (5) containing the powder moves to the upper horizontal edge of the conveyor belt (10), the first gear (19) thereon will engage with the rack (17). The first gear (19) contacts and drives the first gear (19) to rotate. The rotation of the first gear (19) drives the rotating shaft (18) to rotate. The rotation of the rotating shaft (18) drives the barrel (5) to rotate. The rotation of the barrel (5) causes the powder inside to pour into the funnel (3). The meshing of the first gear (19) and the rack (17) only causes the first gear (19) to rotate one circle. The first gear (19) is first rotated 180 degrees to ensure that all the powder inside the barrel (5) enters the funnel (3) without leaving any residue. S2: In addition, when the conveyor belt (10) rotates, it also drives the four sets of convex teeth (21) to rotate. When the convex teeth (21) and the second gear (24) come into contact, the second gear (24) is driven to rotate. At this time, the rotation of the second gear (24) will not drive the rotating rod (16) to rotate through the one-way bearing (23). However, the rotation of the second gear (24) at this time will cause the torsion spring (22) to generate torque. This torque will continue to accumulate to form a stored force until all the powder inside the barrel (5) enters the funnel (3). The convex teeth (21) and the second gear (24) are separated. Then, the torque generated by the torsion spring (22) will cause the second gear (24) to rotate in the opposite direction. At this time, the second gear (2 4) The rotation drives the rotating rod (16) to rotate through the one-way bearing (23), and the rotation of the rotating rod (16) drives the rotating disk (7) to rotate. The spring rod (8) of the rotating disk (7) rotates, and the rotation of the spring rod (8) drives the impact ball (9) to rotate. The impact ball (9) hits the funnel (3). The purpose of this process is to ensure that the powder inside the funnel (3) maintains a consistent state each time it is tested, so that the fluidity test of the powder is more accurate and reliable. Through this precise powder sorting and homogenization process, the error that may be caused by the uneven distribution of the powder can be effectively eliminated, the stability of each test result can be ensured, and the accuracy of the test of the powder can be improved; S3: Finally, the solenoid valve starts the hopper (3) to start discharging materials. During the discharging process, the camera (20) will monitor the flow of the powder in real time, and when the powder discharging is detected, the timer (4) will start timing, so that the fluidity of the powder can be tested. By repeating this process in turn, the powder can be continuously detected, avoiding the inaccurate detection of the powder fluidity in a single test. This cyclic detection method effectively improves the use effect of the equipment and the accuracy of the detection results.

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