Wet particle repose angle calibration device and working method thereof

Abstract

The invention discloses a wet particle repose angle calibration device and a working method thereof, and belongs to the field of material physical property detection. The device comprises three core modules, namely a first fixing module, a particle-containing accumulation table, a spring fixing plate, an aluminum profile framework and the like, wherein the spring fixing plate is mechanically connected with the aluminum profile framework; the second transmission module is provided with a sliding rail, a connecting rod gear, a motor, a square spring and the like, and the second connecting rod gear is in mechanical transmission with the sliding rail; and the third separation module is provided with a separation connecting rod, a T-shaped connecting rod, a bearing buckle and two half charging barrels and can be matched with the transmission module to realize mutual separation of the charging barrels. Through the synergistic effect of the three modules, the wall surface effect of wall surface rolling friction on wet particles is reduced, the repose angle calibration of the wet particles is accurately completed, and the calibration accuracy is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of material physical property testing, specifically a device for calibrating the angle of repose of wet particles and its working method. Background Technology

[0002] The angle of repose is a key physical parameter characterizing the flowability and internal friction properties of granular materials (such as sand, powder, and particle groups). Its accurate measurement is crucial for engineering and scientific research scenarios such as silo design, granular material transportation, and screening process optimization. The corresponding angle of repose measuring device is the core tool for obtaining this parameter and is widely used in mining, construction, chemical and other fields.

[0003] Currently, existing methods and corresponding devices for measuring the angle of repose mainly include the fixed funnel method and mechanical lifting devices. The fixed funnel method, which involves freely pouring particles from a funnel of a specific size into a receiving tray to form a conical accumulation, measures the angle. It offers advantages such as ease of operation and low cost, making it suitable for routine testing of small-diameter granular materials in drying. The mechanical lifting device, on the other hand, involves lifting a cylindrical container upwards, allowing particles to naturally accumulate on the bottom support surface. This method is suitable for observing non-impact accumulation scenarios, but the wall effect leads to significant measurement errors. Both methods have obvious limitations: the fixed funnel method is susceptible to particle splashing and irregular accumulation, while the mechanical lifting device is significantly affected by the wall effect (the lifting structure causes friction and adhesion between the container wall and the particles, hindering the free sliding of edge particles, causing the particle accumulation state to deviate from the natural accumulation pattern, thus distorting the measurement results). Therefore, developing an angle of repose measuring device that can mitigate the wall effect and improve measurement accuracy and repeatability is of great significance for optimizing engineering design and improving the reliability of scientific research data. Summary of the Invention

[0004] This invention provides a wet particle repose angle calibration device and its working method to solve the above-mentioned problems existing in the prior art.

[0005] The objective of this invention can be achieved through the following technical solution: a wet particle repose angle calibration device, comprising a first fixing module, a second transmission module and a third separation module, wherein the first fixing module is used to fix the second transmission module and the third separation module, and the second transmission module and the third separation module are mechanically connected.

[0006] The first fixing module includes a particle stacking platform, a first spring fixing plate, a second spring fixing plate, a first spring fixing box, and an aluminum profile frame; the first spring fixing plate and the second spring fixing plate are symmetrically assembled on both sides of the aluminum profile frame, and a first spring fixing box is installed on both the first spring fixing plate and the second spring fixing plate; the particle stacking platform is installed at the bottom of the aluminum profile frame.

[0007] The second transmission module includes a second spring fixing platform, a second slide rail, a spring positioning pin, a first connecting gear, a second connecting gear, a motor, a motor support plate, a square spring, and a connecting rod buckle. The motor support plate is installed between the first spring fixing plate and the second spring fixing plate. The motor is installed on the motor support plate and is mechanically connected to the first connecting gear. The first connecting gear and the second connecting gear mesh. The connecting rod buckle is mechanically fixed to the second slide rail on the same side of the second spring fixing platform. The first connecting gear and the second connecting gear are mechanically connected to the second slide rail assembled on the first spring fixing plate and the second spring fixing plate, respectively. One end of the spring positioning pin is fixed to the second spring fixing platform and is rivet-shaped, which provides lateral and longitudinal fixing for the second spring fixing platform. The square spring moves along the axis of the spring positioning pin and transmits force to the second spring fixing platform through elastic deformation to keep the second slide rail and the second connecting gear tightly connected. The other end of the spring positioning pin is threaded and mechanically connected to the first spring fixing box. The first spring fixing box has four symmetrically distributed threaded holes, and four spring positioning pins with square springs installed are symmetrically installed on the bolt holes of the first spring fixing box.

[0008] The third separation module includes a first separation link, a first three-hole link, a first T-shaped link, a first bearing clip, a second bearing clip, a separation module fixing frame, a half-barrel, a three-hole link fixing, a square connecting rod, a deep groove ball bearing, a wing nut, and a leveling bolt. The deep groove ball bearing is fixed to the first separation link, the first three-hole link, the first T-shaped link, the first bearing clip, the second bearing clip, and the half-barrel connection point, which cooperates with the second transmission module to separate the two half-barrels. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a wet particle repose angle calibration device according to the present invention.

[0010] Figure 2 This is a schematic diagram of the structure of the wet particle repose angle calibration device of the present invention, showing the disassembly of the first spring fixing plate and the first spring fixing box.

[0011] Figure 3 This is a half-section schematic diagram of the wet particle repose angle calibration device of the present invention.

[0012] Figure 4 This is a half-section diagram of the wet particle repose angle calibration device of the present invention.

[0013] Figure 5 This is a schematic diagram of the combined structure of the transmission module and the separation module of the present invention.

[0014] The attached diagram is labeled as follows: 11. Particle stacking platform; 12. First spring fixing plate; 13. Second spring fixing plate; 14. First spring fixing box; 15. Aluminum profile frame; 21. Second spring fixing platform; 22. Second slide rail; 23. Spring positioning pin; 24. Second connecting rod gear; 25. First connecting rod gear; 26. Motor; 27. Motor support plate; 28. Square spring; 29. ​​Connecting rod buckle; 31. First separating connecting rod; 32. First three-hole connecting rod; 33. First T-shaped connecting rod; 34. First bearing buckle; 35. Second bearing buckle; 36. Separation module fixing frame; 37. Half-barrel; 38. Three-hole connecting rod fixing; 39. Square connecting rod; 310. Deep groove ball bearing; 311. Wing nut; 312. Equal height bolt; Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art.

[0016] The terms "first," "second," and similar words used in this invention application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," and "setting" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0017] Step 1: The drive motor 26 adjusts the slide rail connecting teeth of the first connecting rod gear 25 and the second connecting rod gear 24 to cooperate with the bottom of the second slide rail 22. The bottom of the second slide rail 22 is the lower part of the second slide rail 22 in the abstract diagram. At this time, the rivet-shaped end of the spring positioning pin 23 maintains a certain gap with the second spring fixing platform 21. At this time, the square spring 28 is pressed. The connecting rod buckle 29 moves horizontally under the drive of the second spring fixing platform 21, driving the first separating connecting rod 31, the first three-hole connecting rod 32, the first T-shaped connecting rod 33, the first bearing buckle 34, the second bearing buckle 35, and the half-barrel 37 to move. The middle hole of the first three-hole connecting rod 32 and the three-hole connecting rod fixing 38 can only rotate. Under the action of the connecting rod equipped with the deep groove ball bearing 310, the two half-barrels 37 cooperate to form a cylinder.

[0018] Step 2: Adjust the first bearing latch 34 and the second bearing latch 35 so that the bottom of the cylinder formed by the two half-cylinders 37 fits tightly with the particle accumulation platform 11. Fill the cylinder with the wet particles to be calibrated, with the filling height being about half the height of the cylinder. Drive the motor 26 to adjust the slide rail connecting teeth of the first connecting rod gear 25 and the second connecting rod gear 24 to engage with the top of the second slide rail 22. The bottom of the second slide rail 22 is the upper part of the second slide rail 22 in the abstract diagram. At this time, the rivet-shaped end of the spring positioning pin 23 fits tightly with the second spring fixing platform 21. At this time, the compressed square spring 28 is released, and the connecting rod latch 29 moves horizontally under the drive of the second spring fixing platform 21, which drives the first separating connecting rod 31 to move, drives the first three-hole connecting rod 32 to act as a lever, and drives the first T-shaped connecting rod 33, the first bearing latch 34, and the second bearing latch 35 to move, thereby separating the two half-cylinders 37 and allowing the wet particles to accumulate naturally, thereby calibrating the angle of repose.

Claims

1. A device for calibrating the angle of repose of wet particles, characterized in that, include: Particle stacking platform (11); aluminum profile frame (15) connected to particle stacking platform (11); first spring fixing plate (12) and second spring fixing plate (13) connected to aluminum profile frame (15) and particle stacking platform (11); first spring fixing box (14) mechanically fixed on one side of first spring fixing plate (12); second spring fixing plate (13), first spring fixing box (14) mechanically fixed on the other side of second spring fixing plate (13) symmetrically distributed with first spring fixing plate (12); motor (26) mechanically fixed on motor support plate (27); motor support plate (27) mechanically fixed between second spring fixing plate (13) and first spring fixing plate (12). The first connecting gear (25) is mechanically connected to the motor (26); the second connecting gear (24) meshes with the first connecting gear (25); the second spring fixing platform (21) is mechanically connected to the spring positioning pin (23); the second slide rail (22) is mounted on the second spring fixing platform (21); the second connecting gear (24) is mechanically engaged with the second slide rail (22); a square spring (28) is fixed on the spring positioning pin (23); the other end of the spring positioning pin (23) is fixed in the bolt hole of the first spring fixing box (14); a connecting rod buckle (29) is fixed to the second spring fixing box (26). On the fixed platform (21); a first separating link (31), the two ends of the first separating link (31) are engaged with deep groove ball bearings (310); equal height bolts (312) and wing nuts (311) are engaged to fix the deep groove ball bearings (310) at both ends of the first separating link (31); the first separating link (31) and the link buckle (29) are connected through the deep groove ball bearings (310); equal height bolts (312) and wing nuts (311) are engaged to fix the deep groove ball bearings (310) at the connection between the first three-hole link (32) and the first trapezoidal link (33); the first three-hole link (32) and the first separating link (31) are connected through the deep groove ball bearings (310). Connection; the first three-hole connecting rod (32) and the first trapezoidal connecting rod (33) are connected by the deep groove ball bearing (310); the deep groove ball bearing (310) is fixed at the connection of the first separating connecting rod (31), the first three-hole connecting rod (32), the first T-shaped connecting rod (33), the first bearing buckle (34), and the second bearing buckle (35) by the cooperation of the equal height bolt (312) and the wing nut (311); the first bearing buckle (34) and the second bearing buckle (35) are connected to the slightly shorter ends of the first T-shaped connecting rod (33) by the deep groove ball bearing (310); the separating module fixing frame (36) is fixed between the aluminum profile frame (15) by the square connecting rod (39);The half-barrel (37) is connected to the first bearing clip (34) and the second bearing clip (35) via the deep groove ball bearing (310); the three-hole connecting rod fixing (38) mates with the middle hole of the first three-hole connecting rod (32) and is fixed on the separation module fixing frame (36).

2. The wet particle repose angle calibration device according to claim 1, characterized in that, The transmission module consists of a motor (26) and a second connecting gear (24) mechanically connected to the first connecting gear (25). The motor (26) is controlled by a circuit to rotate forward and backward, causing the first connecting gear (25) to rotate forward and backward. Through gear meshing, the second connecting gear (24) rotates in reverse and forward. The second connecting gear (24) and the first connecting gear (25) are connected by a tooth as a slide rail link and cooperate with the second slide rail (22). The spring positioning pin (23) of the transmission module is fixed to the second spring fixing platform (21) at one end in the shape of a rivet, which plays a role in fixing the second spring fixing platform (21) in the lateral and longitudinal directions. The square spring (28) moves along the axis of the spring positioning pin (23) and transmits force to the second spring fixing platform (21) through elastic deformation to keep the second slide rail (22) and the second connecting gear (24) tightly connected.

3. The wet particle repose angle calibration device according to claim 1, characterized in that, The half-bulb (37) is concentric with the particle stacking platform (11).

4. The wet particle repose angle calibration device according to claim 1, characterized in that, In the third separation module, the first separation link (31), the first three-hole link (32), the first T-shaped link (33), the first bearing buckle (34), the second bearing buckle (35), the half-barrel (37), the three-hole link fixing (38), the square link rod (39) and its matching deep groove ball bearing (310), wing nut (311), and equal height bolt (312) are all arranged symmetrically on the left and right. The separation module fixing frame (36) is symmetrically installed on both sides of the axis of the third separation module.

5. The wet particle repose angle calibration device according to claim 1, characterized in that, The two half-tubes (37) form a separable cylinder with a PTFE coating on the inner wall.

6. The wet particle repose angle calibration device according to claim 2, characterized in that, The second spring fixing platform (21), the second slide rail (22), the spring positioning pin (23), the square spring (28), and the connecting rod buckle (29) are symmetrically installed between the first spring fixing plate (12) and the second spring fixing plate (13). One end of the spring positioning pin (23) is rivet-shaped and connected to the second spring fixing platform (21), and the other end is threaded and mechanically connected to the first spring fixing box (14). The first spring fixing box (14) is machined with four symmetrically distributed threaded holes, and the four spring positioning pins (23) with square springs (28) are symmetrically installed on the bolt holes of the first spring fixing box (14).

7. The working method of the wet particle repose angle calibration device according to claim 1, characterized in that, The steps include: Step 1: The drive motor (26) adjusts the slide rail connecting teeth of the first connecting rod gear (25) and the second connecting rod gear (24) to cooperate with the bottom of the second slide rail (22). The bottom of the second slide rail (22) is the lower part of the second slide rail (22) in the abstract diagram. At this time, the rivet-shaped end of the spring positioning pin (23) maintains a certain gap with the second spring fixing platform (21). At this time, the square spring (28) is pressed, and the connecting rod buckle (29) is in the second spring. Driven by the spring fixing platform (21), the first separating connecting rod (31), the first three-hole connecting rod (32), the first T-shaped connecting rod (33), the first bearing buckle (34), the second bearing buckle (35), and the half-barrel (37) move. The middle hole of the first three-hole connecting rod (32) is fixed to the three-hole connecting rod (38) and can only rotate. Under the action of the connecting rod equipped with a deep groove ball bearing (310), the two half-barrels (37) cooperate to form a cylinder. Step 2: Adjust the first bearing clip (34) and the second bearing clip (35) so that the bottom of the cylinder formed by the two half-cylinders (37) fits tightly with the particle accumulation platform (11). Fill the cylinder with the wet particles to be calibrated, with a filling height of about half the cylinder height. Drive the motor (26) to adjust the slide rail connecting teeth of the first connecting rod gear (25) and the second connecting rod gear (24) to engage with the top of the second slide rail (22). The bottom of the second slide rail (22) is the upper part of the second slide rail (22) in the abstract diagram. At this time, The rivet-shaped end of the spring positioning pin (23) is tightly fitted with the second spring fixing platform (21). At this time, the compressed square spring (28) is released, and the connecting rod buckle (29) moves under the drive of the second spring fixing platform (21), which drives the first separating connecting rod (31) to move, drives the first three-hole connecting rod (32) to act as a lever, and drives the first T-shaped connecting rod (33), the first bearing buckle (34), and the second bearing buckle (35) to move, thereby separating the two half-cylinders (37) and allowing the wet particles to accumulate naturally, thereby calibrating the angle of repose.

Images