Abrasion resistance testing device for particulate materials

Abstract

The wear resistance testing device for particulate materials of the present invention includes a collision conveying component and a gas supply device. The collision conveying component has a stacking chamber, a conveying chamber, and an air inlet chamber. The stacking outlet at the bottom of the stacking chamber is connected to the conveying inlet at the bottom of the conveying chamber, and the conveying outlet at the top of the conveying chamber is connected to the stacking chamber. The air outlet of the air inlet chamber is connected to the stacking outlet of the stacking chamber. The outlet of the gas supply device is connected to the air inlet of the air inlet chamber, and the gas supply device is used to introduce gas into the air inlet chamber. The wear resistance testing device for particulate materials of the present invention can achieve economical and efficient testing of the wear resistance of material particles.

Description

Technical Field

[0001] This invention relates to the field of particle and nuclear energy technology, and specifically to a device for testing the wear resistance of particulate materials. Background Technology

[0002] The absorber ball system (also known as the absorber ball shutdown system) is the second reactive control system in a pebble bed modular high-temperature gas-cooled reactor. It features pebbling-assisted shutdown and pneumatic conveying for pebbling return for backup. The absorber ball system is a special application of pneumatic conveying technology in nuclear reactor engineering. The movement of the absorber balls within the pneumatic conveying loop is characterized by intermittent cyclic operation. The absorber balls are spherical particles containing neutron-absorbing material (such as boron carbide), typically 5mm to 10mm in diameter. During operation within the reactor, the absorber balls experience wear due to collisions and friction with the walls of pipes or equipment, as well as within the absorber balls themselves. The dust generated by the wear of the absorber balls has a certain impact on reactor operation. The wear resistance of the absorber balls is an important technical parameter, generally expressed as the wear rate. In related technologies, the wear resistance of the absorber balls can be tested using a full-size (approximately 20m high) test bench for the absorber ball pneumatic conveying system. However, the test requires a large number of absorber balls, and the high price of absorber balls makes the testing cost very high. This testing method is also unsuitable for testing small quantities of absorber samples, including verifying the process stability of a small number of absorber samples produced during the R&D phase and inspecting product consistency during mass production. Similar problems arise when testing the wear resistance of granular materials similar to absorber samples (e.g., granules with a diameter of 0.5mm to 10mm), resulting in higher testing costs. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a device for testing the wear resistance of particulate materials.

[0004] The wear resistance testing device for particulate materials according to an embodiment of the present invention includes: A collision conveying component has an accumulation chamber, a conveying chamber, and an air inlet chamber. The accumulation outlet at the bottom of the accumulation chamber is connected to the conveying inlet at the bottom of the conveying chamber, the conveying outlet at the top of the conveying chamber is connected to the accumulation chamber, and the air inlet outlet of the air inlet chamber is connected to the accumulation outlet of the accumulation chamber. A gas supply device, wherein the outlet of the gas supply device is connected to the air inlet of the air inlet chamber, and the gas supply device is used to introduce gas into the air inlet chamber.

[0005] In some embodiments, the stacking cavity includes a stacking sub-cavity with a constant cross-sectional area from top to bottom, wherein the maximum side length or diameter of the cross-section of the stacking sub-cavity is greater than or equal to 5 times the diameter of the particulate material.

[0006] In some embodiments, the conveying cavity includes a conveying sub-cavity with a constant cross-sectional area from top to bottom, wherein the maximum side length or diameter of the cross-section of the conveying sub-cavity is greater than the diameter of the particulate material and less than or equal to 8 times the diameter of the particulate material.

[0007] In some embodiments, the stacking cavity has a vertical dimension of 0.5 meters or more.

[0008] In some embodiments, the bottom of the stacking cavity is inclined downward along the direction adjacent to the conveying cavity, and / or the cross-sectional area of ​​the stacking cavity decreases from top to bottom.

[0009] In some embodiments, the angle between the bottom of the stacking cavity and the horizontal plane is greater than or equal to 15°; at least a portion of the top of the conveying cavity is bent.

[0010] In some embodiments, the air inlet of the air inlet chamber is located in the connection area between the stacking outlet of the stacking chamber and the conveying inlet of the conveying chamber; The air inlet of the air inlet faces downward and is connected to the discharge outlet of the stacking chamber; or, the air inlet of the air inlet is connected to the discharge outlet of the stacking chamber, and the exhaust direction of the air inlet of the air inlet faces the conveying inlet at the bottom of the conveying chamber.

[0011] In some embodiments, the collision conveying component has an exhaust chamber and an exhaust port and an exhaust port communicating with the exhaust chamber; the lower part of the exhaust chamber is connected to the stacking port of the stacking chamber and the conveying outlet of the conveying chamber.

[0012] In some embodiments, the outer periphery of the cross-section of at least one of the stacking cavity and the conveying cavity is rectangular or circular.

[0013] In some embodiments, the inlet of the gas supply device is provided with an airflow inlet filter, the outlet of the collision conveying component is connected to a dust filter, the gas supply device is connected to the air inlet of the air inlet chamber through a gas pipeline, a gas flow meter is provided on the gas pipeline, the gas flow meter is used to measure the gas flow rate in the gas pipeline; and / or the particulate material wear resistance testing device further includes a frame and a controller, the controller is connected to the gas supply device, the controller can be used to control the flow rate of the gas discharged by the gas supply device, and the collision conveying component, the gas supply device and the controller are all located on the frame.

[0014] The beneficial effects of this invention are as follows: The particulate material wear resistance testing device according to embodiments of this invention employs a collision conveying component that more closely approximates the wear mechanism in practical applications. The cross-section of the accumulation chamber gradually decreases in size, and the bottom outlet of the accumulation chamber and the top outlet of the conveying chamber are bent to facilitate the movement of material particles within the collision conveying component. Furthermore, the cross-sections of the accumulation sub-cavities of the accumulation chamber and the conveying sub-cavities of the conveying chamber are both relatively small. This ensures the passage and collision of material particles while minimizing the amount of particulate material contained in the accumulation and conveying sub-cavities, thus achieving economical and efficient testing of the wear resistance of material particles. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of a collision conveying component according to an embodiment of the present invention.

[0016] Figure 2 This is a side view of a collision conveying component according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the cover of the collision conveying component according to an embodiment of the present invention.

[0018] Figure 4 This is a cross-sectional view of a collision conveying component according to another embodiment of the present invention.

[0019] Figure 5 This is a cross-sectional view of a collision conveying component according to another embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of a test apparatus for the wear resistance of particulate materials according to an embodiment of the present invention.

[0021] Figure label: 100. Collision conveyor components; 101. Shell, 102. Cover, 103. Baffle, 104. First baffle, 105. Second baffle, 106. Third baffle, 111. Stacking pipe, 112. Delivery pipe, 113. Inlet pipe, 114. Exhaust pipe; 2. Stacking cavity; 21. Stacking outlet; 22. Stacking inlet; 23. Stacking inlet cavity; 24. Stacking variable diameter cavity; 25. Stacking sub-cavity; 26. Stacking outlet cavity. 3. Conveying chamber; 31. Conveying inlet; 32. Conveying outlet; 33. Conveying sub-chamber; 34. Conveying outlet cavity; 4. Intake chamber; 41. Intake chamber outlet; 42. Intake chamber inlet; 5. Exhaust chamber; 51. Exhaust port of exhaust chamber; 52. Inlet of exhaust chamber; 53. Dust filter; 6. Gas supply equipment; 61. Gas inlet filter; 62. Gas pipeline; 63. Gas flow meter. 7. Frame; 8. Data storage and control system; 9. Equipment control and data acquisition box. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] The apparatus for testing the wear resistance of particulate materials according to an embodiment of the present invention is described below with reference to the accompanying drawings. Figures 1 to 6 As shown, the abrasion resistance testing device for particulate materials according to an embodiment of the present invention includes a collision conveying component 100 and an air supply device 6.

[0024] The collision conveying component 100 has a stacking chamber 2, a conveying chamber 3, and an air inlet chamber 4. The stacking chamber 2 is used to stack particulate material. The stacking outlet 21 at the bottom of the stacking chamber 2 is connected to the conveying inlet 31 at the bottom of the conveying chamber 3. The conveying outlet 32 ​​at the top of the conveying chamber 3 is connected to the stacking chamber 2. The air outlet 41 of the air inlet chamber 4 is connected to the stacking outlet 21 of the stacking chamber 2. The outlet of the air supply device 6 is connected to the air inlet 42 of the air inlet chamber 4, and the air supply device 6 is used to introduce gas into the air inlet chamber 4. Specifically, the particulate material to be tested is stacked in the stacking chamber 2, and the stacking outlet 21 of the stacking chamber 2, the conveying inlet 31 at the bottom of the conveying chamber 3, and the air outlet 41 of the air inlet chamber 4 are interconnected. That is, the air outlet 41 of the air inlet chamber 4 is connected to the connection area between the stacking outlet 21 of the stacking chamber 2 and the conveying inlet 31 at the bottom of the conveying chamber 3. The particle material has a diameter (average diameter) greater than or equal to 1 mm. For example, the particle material has a diameter (average diameter) of 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. Another example is that the particle material is an absorbent sphere.

[0025] Therefore, when the gas supply device 6 supplies gas to the air inlet chamber 4 through the air inlet 42, the gas discharged from the air outlet 41 of the air inlet chamber 4 can blow the granular material at the discharge port 21 of the stacking chamber 2 into the conveying chamber 3, and drive the granular material to move upward in the conveying chamber 3. During the upward movement of the granular material in the conveying chamber 3 driven by the gas, it can collide with the inner surface of the conveying chamber 3, thereby conducting a wear resistance test. After the granular material moves to the top of the conveying chamber 3, it can return to the stacking chamber 2 from the discharge port 32. The air outlet of the collision conveying component 100 can be provided in the conveying chamber 3, the stacking chamber 2, or other cavities. Other cavities can be cavities that communicate with the conveying chamber 3 and the stacking chamber 2, for example, other cavities are exhaust chambers 5. For example, the gas inside the collision conveying component 100 can be discharged from the air outlet at the top of the conveying chamber 3; or, the gas inside the collision conveying component 100 can be discharged from the air outlet at the top of the accumulation chamber 2, or the gas inside the collision conveying component 100 can be discharged from the air outlet of other chambers of the collision conveying component 100. Thus, the particulate material can circulate into the accumulation chamber 2 and the conveying chamber 3, thereby continuously colliding with the inner surface of the conveying chamber 3, so as to continuously test the wear resistance of the particulate material. The wear resistance testing time of the particulate material is controlled by controlling the air supply time of the air supply device 6. The particulate material wear resistance testing device according to the embodiment of the present invention, by setting up the collision conveying component 100 and the air supply device 6, allows the particulate material to be tested to be circulated within the collision conveying component 100, thereby facilitating the testing of the wear resistance of the particulate material.

[0026] Therefore, the abrasion resistance testing device for particulate materials according to embodiments of the present invention facilitates abrasion resistance testing of particulate materials.

[0027] like Figure 1 and Figure 4 As shown, in some embodiments, the cross-sectional area of ​​the packing cavity 2 decreases from top to bottom. That is, at least a portion of the cross-section of the packing cavity 2 decreases downward. Specifically, the inlet of the packing cavity 2 is located at its top, and at least a portion of the upper cross-sectional area of ​​the packing cavity 2 decreases downward to allow particulate material to enter the packing cavity 2.

[0028] like Figure 1 and Figure 4 As shown, in some embodiments, the bottom of the stacking cavity 2 is inclined downward along the direction adjacent to the conveying cavity 3. The stacking outlet 21 is located at the bottom of the stacking cavity 2, and the bottom of the stacking cavity 2 is inclined downward toward the conveying inlet 31 of the adjacent conveying cavity 3, so that the particulate material can move toward the adjacent conveying cavity 3 under the action of gravity, so that the particulate material can enter the conveying cavity 3.

[0029] In some embodiments, the angle between the bottom of the accumulation chamber 2 and the horizontal plane is greater than or equal to 15°, so that the particulate material can easily move downward and enter the conveying chamber 3. For example, the angle between the bottom of the accumulation chamber 2 and the horizontal plane is 30°.

[0030] In some embodiments, the vertical dimension of the stacking cavity 2 is greater than or equal to 0.5 meters. This allows a predetermined amount of particulate material to be stacked within the stacking cavity 2. For example, the vertical dimension of the stacking cavity 2 can be 0.8 meters, 1.6 meters, or 3 meters, etc.

[0031] like Figure 1 and Figure 4 As shown, in some embodiments, the stacking cavity 2 includes a stacking sub-cavity 25 with a constant cross-sectional area from top to bottom. The maximum side length or diameter of the cross-section of the stacking sub-cavity 25 is greater than or equal to five times the diameter of the particulate material. Therefore, the cross-section of the stacking sub-cavity 25 is smaller, thereby reducing the loading volume of the particulate material (absorbent spheres), thus reducing the amount of sample consumed in each abrasion resistance test of the absorbent spheres, lowering the testing cost, and improving the economics of the testing. For example, the outer perimeter of the cross-section of the stacking sub-cavity 25 is rectangular, or the outer perimeter of the cross-section of the stacking sub-cavity 25 is circular. Another example is that the maximum side length of the cross-section of the stacking sub-cavity 25 is equal to six, seven, or eight times the diameter of the particulate material.

[0032] In some embodiments, at least a portion of the top of the conveying chamber 3 is bent. Specifically, at least a portion of the top of the conveying chamber 3 is bent downwards so that particulate material moving to the top of the conveying chamber 3 can enter the accumulation chamber 2 from the (downward) bent portion.

[0033] like Figure 1 and Figure 4 As shown, in some embodiments, the air inlet outlet 41 of the air inlet chamber 4 is located in the connection area between the stacking outlet 21 of the stacking chamber 2 and the conveying inlet 31 of the conveying chamber 3. This allows the air inlet outlet 41 of the air inlet chamber 4 to be closer to the stacking outlet 21 of the stacking chamber 2 and the conveying inlet 31 of the conveying chamber 3, so that the particulate material located in this connection area is carried into the conveying chamber 3 by the exhaust from the air inlet outlet 41 of the air inlet chamber 4.

[0034] like Figure 1 and Figure 4 As shown, in some embodiments, the air inlet outlet 41 of the air inlet chamber 4 faces downward and communicates with the stacking outlet 21 of the stacking chamber 2. For example, the air inlet chamber 4 is a cavity extending in the vertical direction and located between the stacking chamber 2 and the conveying chamber 3, so as to reduce the space occupied by the collision conveying component 100 and also to facilitate the operation of the device.

[0035] In some embodiments, the air inlet outlet 41 of the air inlet chamber 4 is connected to the stacking outlet 21 of the stacking chamber 2, and the exhaust direction of the air inlet outlet 41 of the air inlet chamber 4 is towards the conveying inlet 31 of the conveying chamber 3. This allows the exhaust from the air inlet outlet 41 of the air inlet chamber 4 to easily enter the conveying inlet 31 of the conveying chamber 3, so as to allow material particles to be fed into the conveying inlet 31 of the conveying chamber 3.

[0036] In some embodiments, the air inlet outlet 41 of the air inlet chamber 4 is oriented horizontally and communicates with the stacking outlet 21 of the stacking chamber 2. The horizontal orientation of the air inlet outlet 41 of the air inlet chamber 4 is consistent with the horizontal orientation of the stacking outlet 21 of the stacking chamber 2. Specifically, the air inlet outlet 41 of the air inlet chamber 4 is oriented horizontally toward the conveying inlet 31, so that the gas discharged from the air inlet outlet 41 of the air inlet chamber 4 can easily drive the material particles discharged from the stacking outlet 21 of the stacking chamber 2 into the conveying inlet 31 of the conveying chamber 3.

[0037] In some embodiments, the air inlet 41 of the air inlet chamber 4 is inclined upward or downward.

[0038] like Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, the conveying chamber 3 includes a conveying sub-chamber 33 with a constant cross-sectional area from top to bottom. The maximum side length or diameter of the cross-section of the conveying sub-chamber 33 is greater than the diameter of the particulate material but less than or equal to eight times the diameter of the particulate material. Specifically, the small cross-section of the conveying sub-chamber 33 facilitates the generation of a larger gas velocity with the same gas flow rate, thereby increasing the movement speed of the particulate material (absorbent ball), accelerating the wear of the particulate material (absorbent ball), reducing the time consumed in testing the wear resistance of the particulate material (absorbent ball), and achieving high efficiency in testing. In other words, the small cross-section of the conveying sub-chamber 33 facilitates the movement of the particulate material within the conveying sub-chamber 33 for testing the wear resistance of the particulate material.

[0039] like Figure 1 , Figure 4 and Figure 5As shown, in some embodiments, the collision conveying component 100 has an exhaust chamber 5 and an exhaust port 51 and an exhaust port 52 communicating with the exhaust chamber 5. The lower part of the exhaust chamber 5 communicates with the stacking port 22 of the stacking chamber 2 and the conveying port 32 of the conveying chamber 3. Specifically, the exhaust chamber 5 is located above the stacking chamber 2, and the exhaust port 51 constitutes the air outlet of the collision conveying component 100, through which gas inside the collision conveying component 100 can be discharged. Gas discharged from the conveying port 32 of the conveying chamber 3 enters the exhaust chamber 5 and then exits upward from the exhaust port 51 of the collision conveying component 100. When it is necessary to feed particulate material into the collision conveying component 100, the particulate material can enter the exhaust chamber 5 from the exhaust port 52 and then fall downward into the stacking chamber 2. Particulate material discharged from the conveying port 32 of the conveying chamber 3 falls downward into the stacking chamber 2. For example, the exhaust port 51 and the feed port 52 of the exhaust chamber are both located above the stacking chamber 2 and the conveying chamber 3. Alternatively, the exhaust port 51 and the feed port 52 of the exhaust chamber may be located on the side wall or top wall of the exhaust chamber 5.

[0040] In some embodiments, a screen may be provided at the air outlet 41 of the air inlet chamber to prevent particulate material (absorbent balls) from accidentally entering the air inlet chamber 4.

[0041] In some embodiments, a screen may be provided at the exhaust port 51 of the exhaust chamber to prevent particulate material (absorbent ball) from accidentally entering the exhaust chamber 5 and then entering the exhaust port 51 of the exhaust chamber and running out of the detection device.

[0042] In some embodiments, the exhaust port 51 of the exhaust chamber constitutes the inlet 52 of the exhaust chamber, through which particulate material can enter the exhaust chamber 5. That is, the exhaust port 51 of the exhaust chamber can also be the inlet 52 of the exhaust chamber, and the two are the same opening.

[0043] like Figure 1 and Figure 4 As shown, in one specific embodiment, the stacking cavity 2 is located to the left of the conveying cavity 3.

[0044] The stacking cavity 2 comprises, from top to bottom, a stacking inlet cavity 23, a stacking variable-diameter cavity 24, a stacking sub-cavity 25, and a stacking outlet cavity 26, connected sequentially. The stacking inlet cavity 23 and the stacking sub-cavity 25 are cavities extending vertically with a constant diameter. The cross-sectional area of ​​the stacking sub-cavity 25 is less than or equal to the cross-sectional area of ​​the stacking inlet cavity 23 and the stacking variable-diameter cavity 24. The cross-sectional area of ​​the stacking variable-diameter cavity 24 decreases downwards. The stacking outlet cavity 26 is inclined downwards along the direction adjacent to the conveying cavity 3 (to the right), and the angle between the stacking outlet cavity 26 and the horizontal plane is greater than or equal to 15°.

[0045] The conveying chamber 3 includes a conveying sub-chamber 33 and a conveying outlet chamber 34 connected in sequence, with the top of the conveying sub-chamber 33 connected to the conveying outlet chamber 34. The conveying sub-chamber 33 extends vertically and has a constant cross-section. The outlet of the conveying outlet chamber 34 forms a conveying discharge port 32. For example, the conveying sub-chamber 33 is connected to the conveying outlet chamber 34 via a bent cavity. The conveying outlet chamber 34 extends downward, or it extends downward and to the left in the direction adjacent to the accumulation chamber 2.

[0046] In some embodiments, the outer periphery of the cross-section of at least one of the stacking cavity 2 and the conveying cavity 3 is rectangular or circular. For example, the outer periphery of the cross-section of the stacking cavity 2 and the conveying cavity 3 is rectangular or circular.

[0047] like Figures 1 to 3 As shown, in a specific embodiment, the outer periphery of the cross-sections of the stacking cavity 2 and the conveying cavity 3 is rectangular.

[0048] The stacking chamber 2 and the conveying chamber 3 are defined by the walls of the plate. For example, the collision conveying component 100 includes a housing 101, a cover 102, a guide plate 103, a first partition 104, a second partition 105, and a third partition 106.

[0049] The housing 101 and the cover 102 are connected, with the cover 102 sealing the opening of the housing 101. A guide plate 103 is detachably disposed at the bottom of the housing 101 and closes the lower opening of the impact conveying component 100. The guide plate 103 facilitates the discharge of particulate material from the cavity of the impact conveying component 100. For example, the housing 101, cover 102, and guide plate 103 are connected by bolts. For example, the housing 101, first partition 104, second partition 105, and third partition 106 are integrally formed. Alternatively, the housing 101, first partition 104, second partition 105, and third partition 106 are components formed by machining sheet metal. Yet another example is that the housing 101, first partition 104, second partition 105, and third partition 106 are welded together from sheet metal.

[0050] The first partition 104, the second partition 105 and the third partition 106 are disposed within the collision conveying component 100.

[0051] For example, combining Figure 1 The composition of the stacking chamber 2, the conveying chamber 3, the air intake chamber 4, and the exhaust chamber 5 will be described in detail below. The front and rear sides of each of the first partition 104, the second partition 105, and the third partition 106 are respectively connected to the housing 101 and the cover 102 of the collision conveying component 100.

[0052] The left wall of the first partition 104 and a portion of the upper left wall of the second partition 105 define the stacking cavity 2 with the left inner wall of the housing 101.

[0053] The top of the third partition 106 is connected to the upper part of the right inner wall of the housing 101. The left wall and the upper side of the third partition 106 together with the left inner wall and the lower side of the housing 101 form an exhaust chamber 5.

[0054] The top of the second partition 105 is located between the third partition 106 and the right inner wall of the housing 101. The second partition 105 and the third partition 106, together with the right inner wall of the housing 101, define the conveying cavity 3.

[0055] The top of the first partition 104 is connected to the second partition 105, and the right wall of the first partition 104 and the left wall of the second partition 105 define the air intake chamber 4.

[0056] In one specific embodiment, the stacking cavity 2 and the conveying cavity 3 are defined by the inner wall surface of the pipe. For example, combined with Figure 4 and Figure 5 The composition of the stacking chamber 2, conveying chamber 3, air intake chamber 4, and exhaust chamber 5 will be described in detail below. The collision conveying component 100 includes a stacking pipe 111, a conveying pipe 112, an air intake pipe 113, and an exhaust pipe 114.

[0057] Exhaust pipe 114 defines the upper part of exhaust chamber 5 and accumulation chamber 2. The lower opening of exhaust pipe 114 is connected to the upper opening of accumulation pipe 111 through a reducing pipe with a downwardly decreasing cross-section. The bottom of accumulation pipe 111 bends downward and to the right and connects to the lower openings of delivery pipe 112 and intake pipe 113. Intake pipe 113 defines intake chamber 4, and delivery pipe 112 defines delivery chamber 3. The top of delivery pipe 112 bends downward and to the left and communicates with exhaust pipe 114.

[0058] like Figure 4 As shown, the intake pipe 113 extends in the vertical direction, and the lower opening of the intake pipe 113 forms the air outlet 41 of the intake chamber.

[0059] like Figure 5 As shown, the intake pipe 113 extends in the left and right direction, and the right opening of the intake pipe 113 forms the air outlet 41 of the intake chamber.

[0060] like Figure 6 As shown, in some embodiments, an airflow inlet filter 61 is provided at the inlet of the gas supply device 6, which is used to filter the gas entering the gas supply device 6. The outlet of the collision conveying component 100 is connected to the dust filter 53, and the exhaust port 51 of the exhaust chamber 5 constitutes the outlet of the collision conveying component 100. The dust filter 53 is used to filter the gas discharged from the collision conveying component 100 (exhaust port 51).

[0061] In some embodiments, the gas supply device 6 is connected to the air inlet 42 of the air inlet chamber 4 via a gas pipeline 62. A gas flow meter 63 is provided on the gas pipeline 62 to measure the gas flow rate within the gas pipeline 62 in order to obtain test data. For example, the gas pipeline 62 is connected to the air inlet 42 of the air inlet chamber via a flange. The gas flow meter 63 is a vortex flow meter.

[0062] like Figure 6 As shown, the particulate material abrasion resistance testing device also includes a frame 7 and a controller. The controller is connected to the gas supply device 6 and can be used to control the flow rate of the gas discharged from the gas supply device 6. The collision conveying component 100, the gas supply device 6, and the controller are all located on the frame 7. Specifically, the controller includes a data storage and control system 8 and an equipment control and data acquisition box 9. The collision conveying component 100, the gas supply device 6, the data storage and control system 8, and the equipment control and data acquisition box 9 are all integrated into the frame 7. For example, the frame 7 is a steel frame and has an operating table.

[0063] Specifically, the gas supply equipment 6 includes a gas source power unit, and an equipment control and data acquisition box 9 has a frequency converter. The equipment control and data acquisition box 9 is connected to the gas supply equipment 6 to control at least one of the gas supply pressure and flow rate of the gas supply equipment 6. For example, the gas source power unit is a fan. Another example is that the gas supply equipment 6 includes an air compressor and an air storage tank for providing the gas source. A data storage and control system 8 can be connected to the equipment control and data acquisition box 9 to control the equipment control and data acquisition box 9 and perform data storage. For example, the data storage and control system 8 is a computer.

[0064] The wear resistance testing device for particulate materials according to an embodiment of the present invention employs a collision conveying component 100 that more closely approximates the wear mechanism in actual applications. The cross-section of the accumulation chamber 2 gradually decreases in size, and the bottom outlet of the accumulation chamber 2 and the top outlet of the conveying chamber are bent to facilitate the movement of material particles within the collision conveying component. Furthermore, the cross-sections of the accumulation sub-cavities 25 and 33 of the conveying chamber 3 are both relatively small. While ensuring the passage of material particles (absorbent balls), the number of particulate materials contained in the accumulation sub-cavities 25 and 33 is minimized, achieving economical and efficient testing of the wear resistance of material particles (absorbent balls).

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for testing the wear resistance of particulate materials, characterized in that, include: A collision conveying component has an accumulation chamber, a conveying chamber, and an air inlet chamber. The accumulation outlet at the bottom of the accumulation chamber is connected to the conveying inlet at the bottom of the conveying chamber, the conveying outlet at the top of the conveying chamber is connected to the accumulation chamber, and the air inlet outlet of the air inlet chamber is connected to the accumulation outlet of the accumulation chamber. A gas supply device, wherein the outlet of the gas supply device is connected to the air inlet of the air inlet chamber, and the gas supply device is used to introduce gas into the air inlet chamber.

2. The abrasion resistance testing device for particulate materials according to claim 1, characterized in that, The stacking cavity includes a stacking sub-cavity with a constant cross-sectional area from top to bottom, wherein the maximum side length or diameter of the cross-section of the stacking sub-cavity is greater than or equal to 5 times the diameter of the particulate material.

3. The abrasion resistance testing device for particulate materials according to claim 1, characterized in that, The conveying chamber includes a conveying sub-chamber with a constant cross-sectional area from top to bottom. The maximum side length or diameter of the cross-section of the conveying sub-chamber is greater than the diameter of the granular material and less than or equal to 8 times the diameter of the granular material.

4. The abrasion resistance testing device for particulate materials according to any one of claims 1-3, characterized in that, The stacking cavity has a vertical dimension of 0.5 meters or more.

5. The abrasion resistance testing device for particulate materials according to claim 1, characterized in that, The bottom of the stacking cavity is inclined downward along the direction adjacent to the conveying cavity, and / or The cross-sectional area of ​​the accumulation cavity decreases from top to bottom.

6. The abrasion resistance testing device for particulate materials according to claim 5, characterized in that, The angle between the bottom of the accumulation cavity and the horizontal plane is greater than or equal to 15°. At least a portion of the top of the delivery cavity is bent.

7. The abrasion resistance testing device for particulate materials according to claim 5, characterized in that, The air inlet of the air inlet chamber is located in the connection area between the stacking outlet of the stacking chamber and the conveying inlet of the conveying chamber. The air inlet of the air inlet chamber faces downward and is connected to the discharge outlet of the accumulation chamber; or... The air inlet of the air inlet chamber is connected to the material outlet of the material accumulation chamber, and the exhaust direction of the air inlet of the air inlet chamber is toward the material inlet at the bottom of the material conveying chamber.

8. The abrasion resistance testing device for particulate materials according to claim 1, characterized in that, The collision conveying component has an exhaust chamber and an exhaust port and an exhaust port communicating with the exhaust chamber; The lower part of the exhaust chamber is connected to the accumulation inlet of the accumulation chamber and the conveying outlet of the conveying chamber.

9. The abrasion resistance testing device for particulate materials according to claim 1, characterized in that, The outer periphery of the cross-section of at least one of the stacking cavity and the conveying cavity is rectangular or circular.

10. The abrasion resistance testing device for particulate materials according to claim 1, characterized in that, The gas supply equipment is equipped with an airflow inlet filter at its inlet, and the outlet of the collision conveying component is connected to a dust filter. The gas supply equipment is connected to the inlet of the inlet chamber via a gas pipeline. A gas flow meter is installed on the gas pipeline to measure the gas flow rate within the gas pipeline; and / or The wear resistance testing device for particulate materials also includes a frame and a controller. The controller is connected to the gas supply equipment and can be used to control the flow rate of the gas discharged from the gas supply equipment. The collision conveying component, the gas supply equipment, and the controller are all located on the frame.

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