Air floatation bearing capacity measuring device

Abstract

The utility model discloses an air floatation bearing capacity measuring device which comprises a kettle body, a displacement sensor, a pressure sensor, an air film thickness control assembly, an air floatation bearing block and a connecting rod. A fixed end cover is arranged on the kettle body, the gas film thickness control assembly is arranged at the top of the fixed end cover, a gas receiving port is formed in the bottom of the kettle body, a measuring position for placing a material to be measured is arranged between the gas receiving port and the fixed end cover, and the gas receiving port is communicated with the measuring position; the top of the connecting rod is connected to a fixed end cover, and a plurality of exhaust through holes are formed in the fixed end cover; the air film thickness control assembly can adjust the position of the connecting rod, the air floating force bearing block is arranged above a material to be measured, the air floating force bearing block is arranged under the connecting rod, the displacement sensor is arranged on the connecting rod, and the pressure sensor is arranged between the air film thickness control assembly and the connecting rod. And the accuracy and precision of gas film measurement can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of porous materials, in particular to an air floating bearing capacity measuring device. Background Art

[0002] In recent years, with the deepening of research on microstructures, porous materials have been widely used in many fields due to their unique structure. They are often used for filtering impurities, catalytic reactions, heat exchange structures, flotation, etc.

[0003] The parameters used to measure the performance of porous materials mainly include porous particle size, pore size, porosity, permeability, etc. When porous materials are used in air-floating structures, it is necessary to obtain the air-floating bearing capacity of the porous materials. Conventional methods of obtaining this capacity include experimental measurement or simulation, but both methods have corresponding defects:

[0004] (1) The air bearing capacity data obtained from the experiment often have large errors due to differences in manufacturing materials. In addition, the measurement process is cumbersome and needs to be carried out in a specific environment. However, the specific environment may not fully simulate the conditions in the actual application environment, resulting in differences between the measurement results and the actual situation.

[0005] (2) Since the pore structure of porous materials is relatively complex, a large amount of computing resources and implementation are required to establish a numerical model to describe its internal structure and gas flow behavior. At the same time, it is also necessary to set a variety of parameters, such as the pores, size, and shape of the porous materials. The accuracy of these parameters may affect the reliability and accuracy of the model. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides an air floating bearing capacity measuring device, which can ensure the accuracy and precision of air film measurement.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A flotation bearing capacity measuring device is used for measuring the flotation of a material to be measured, characterized in that it comprises a kettle body, a displacement sensor, a pressure sensor, an air film thickness control component, an air flotation bearing block and a connecting rod; the kettle body is provided with a fixed end cover, the air film thickness control component is arranged on the top of the fixed end cover, the bottom of the kettle body is provided with an air inlet, a measuring position for placing the material to be measured is provided between the air inlet and the fixed end cover, and the air inlet is communicated with the measuring position; the top of the connecting rod is connected to the fixed end cover, and the fixed end cover is provided with a plurality of exhaust through holes; the air film thickness control component can adjust the position of the connecting rod, the air flotation bearing block is arranged above the material to be measured, the air flotation bearing block is arranged directly below the connecting rod, the displacement sensor is arranged on the connecting rod, and the pressure sensor is arranged between the air film thickness control component and the connecting rod.

[0009] Furthermore, a limiting block is provided at one end of the connecting rod close to the air buoyancy bearing block, the limiting block is set as a spherical structure, and the air buoyancy bearing block is provided with an arc-shaped groove adapted to the outer peripheral contour of the limiting block.

[0010] Furthermore, a fixed plate and a fixed plate end cover are provided inside the kettle body, a first air inlet channel is provided on the fixed plate, a second air inlet channel is provided on the fixed plate end cover, and the measuring position is provided between the first air inlet channel and the second air inlet channel.

[0011] Furthermore, a first sealing groove is provided on a contact surface between the fixing plate and the fixing plate end cover, and a second sealing ring is provided in the first sealing groove.

[0012] Furthermore, an annular step is provided on the fixing plate, and an annular protrusion structure is provided on the fixing plate end cover, and the inner diameter of the annular step is smaller than the outer diameter of the material to be measured; when the fixing plate and the fixing plate end cover are fixedly connected, the space formed by the annular step and the annular protrusion structure is adapted to the outer peripheral contour of the material to be measured.

[0013] Furthermore, the annular protruding structure is provided with a plurality of guide members arranged at intervals, and ventilation grooves for gas circulation are provided between adjacent guide members.

[0014] Furthermore, a second sealing groove is provided on the annular step of the fixing plate, and a third sealing ring is provided in the second sealing groove.

[0015] Furthermore, the air film thickness control component comprises a lifting platform, a lifting platform support plate is provided on a side of the lifting platform away from the fixed end cover, and the lifting platform support plate is connected to the fixed end cover via a plurality of connecting columns.

[0016] Furthermore, a displacement sensor connection block and a pressure sensor connection block are provided at the upper end of the connecting rod, the pressure sensor is connected to the pressure sensor connection block, the displacement sensor is connected to the displacement sensor connection block, and the pressure sensor is arranged between the connecting rod and the lifting platform.

[0017] Furthermore, a gas mixing chamber is provided in the kettle body and between the gas inlet and the measuring position.

[0018] The beneficial effects of the utility model are:

[0019] The utility model provides an air floatation bearing force measuring device, which controls the positions of the air floatation bearing block and the connecting rod by arranging an air film thickness control component, limits the position of the air floatation bearing block by the connecting rod, and further arranges a displacement sensor and a pressure sensor to detect real-time data, thereby ensuring the accuracy and precision of air film measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram (axonometric) of the kettle body in the utility model;

[0022] Figure 2 It is a schematic diagram of the kettle body in the utility model (top view);

[0023] Figure 3 is along Figure 2 Section view of AA in the middle;

[0024] Figure 4 yes Figure 3 A is an enlarged schematic diagram;

[0025] Figure 5 Schematic diagram of the fixed plate end cover in the utility model (top view);

[0026] Figure 6 It is a schematic diagram of the overall assembly of the air-floating bearing capacity measuring device of the utility model (axonometric measurement);

[0027] Figure 7 It is a schematic diagram of the overall assembly of the air-floating bearing capacity measuring device of the utility model (top view);

[0028] Figure 8 is along Figure 7 Sectional view of the middle BB;

[0029] Fig. 9 It is a partial structural schematic diagram of the air-floating bearing capacity measuring device of the utility model;

[0030] 1. Kettle body; 10. Bottom plate; 101. Second screw; 11. Fixed end cover; 110. Through hole; 12. Air inlet; 130. Fixed plate; 131. Measuring position; 132. Fixed plate end cover; 1321. Second air inlet channel; 1322. Guide member; 1323. Ventilation groove; 133. Second sealing ring; 134. Third sealing ring; 136. First air inlet channel; 14. Gas mixing chamber; 2. Lifting platform; 21. Connecting column; 22. Lifting platform support plate; 3. Connecting rod; 30. Limiting block; 31. Air buoyancy bearing block; 32. Displacement sensor connecting block; 330. Displacement sensor; 34. Pressure sensor connecting block; 340. Pressure sensor. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0032] Reference Figures 1 to 9 The utility model provides an air flotation bearing capacity measuring device, which is used to measure the air flotation of a material to be measured. In this embodiment, the material to be measured is a porous material. The air flotation bearing capacity measuring device includes a kettle body 1, a displacement sensor 330, a pressure sensor 340, an air film thickness control component, an air flotation bearing block 31 and a connecting rod 3;

[0033] The kettle body 1 is provided with a fixed end cover 11, the air film thickness control component is arranged on the top of the fixed end cover 11, and the bottom of the kettle body 1 is provided with an air inlet 12, and a measuring position 131 for placing the material to be measured is provided between the air inlet 12 and the fixed end cover 11, and the air inlet 12 is communicated with the measuring position 131; the top of the connecting rod 3 is connected to the fixed end cover 11, and the fixed end cover 11 is provided with a plurality of exhaust holes 110; the air film thickness control component can adjust the position of the connecting rod 3, the air buoyancy bearing block 31 is arranged above the measuring position 131, and the air buoyancy bearing block 31 is arranged directly below the connecting rod 3, the displacement sensor 330 is arranged on the connecting rod 3, and the pressure sensor 340 is arranged between the air film thickness control component and the connecting rod 3.

[0034] During the test, the porous material is horizontally placed on the measuring position 131 and is sealed to the inner wall of the kettle body 1. When the gas inlet 12 introduces gas into the kettle body 1, the gas passes through the porous material and flows to the outside of the kettle body 1 along the exhaust through hole 110. A bottom plate 10 is provided at the bottom of the kettle body 1, and the kettle body 1 and the bottom plate 10 are locked and connected by a second screw 101.

[0035] In this embodiment, a fixed plate 130 and a fixed plate end cover 132 are provided inside the kettle body 1, a first air inlet channel 136 is provided on the fixed plate 130, a second air inlet channel 1321 is provided on the fixed plate end cover 132, and the measuring position 131 is provided between the first air inlet channel 136 and the second air inlet channel 1321.

[0036] Specifically, an annular step is provided on the fixing plate 130, and an annular protrusion structure is provided on the fixing plate end cover 132. The inner diameter of the annular step is smaller than the outer diameter of the material to be measured. When the fixing plate 130 is fixedly connected to the fixing plate end cover 132, the space formed by the annular step and the annular protrusion structure is adapted to the outer peripheral contour of the porous material.

[0037] More specifically, a plurality of guide members 1322 are disposed at intervals on the annular protruding structure, and ventilation grooves 1323 for gas circulation are disposed between adjacent guide members 1322 .

[0038] To ensure that when gas is introduced into the gas inlet 12, the gas can pass through the porous material completely to eliminate the measurement error caused by gas escape. In this embodiment, the contact surface between the fixing plate 130 and the fixing plate end cover 132 is provided with a first sealing groove, and a second sealing ring 133 is provided in the first sealing groove; the annular step of the fixing plate 130 is provided with a second sealing groove, and a third sealing ring 134 is provided in the second sealing groove, and the third sealing ring 134 can prevent overpressure and avoid damage to the porous material.

[0039] Furthermore, the second sealing ring 133 and the third sealing ring 134 are both O-rings, and the elasticity of the O-rings can be used to ensure tight contact between the porous material and the fixed plate end cover 132 .

[0040] The air film thickness control component can adjust the position of the connecting rod 3. In this embodiment, a limiting block 30 is provided at one end of the connecting rod 3 close to the air buoyancy bearing block 31. The limiting block 30 is located between the air buoyancy bearing block 31 and the connecting rod 3. The limiting block 30 is set as a spherical structure, and an arc-shaped groove adapted to the outer peripheral contour of the limiting block 30 is provided on the air buoyancy bearing block 31. When gas is introduced into the air inlet 12, the air buoyancy bearing block 31 will float upward, and the arc-shaped groove will have surface contact with the spherical structure. The limiting block 30 is used to limit the rising height of the air buoyancy bearing block 31 to achieve control of the thickness of the air film; and the surface contact relationship between the air buoyancy bearing block 31 and the limiting block 30 makes the air buoyancy bearing block 31 parallel to the air floating surface of the porous material, and the thickness of the air film is in a uniform state.

[0041] The air film thickness control component includes a lifting platform 2, and the lifting platform 2 is arranged on the top of the fixed end cover 11. In this embodiment, the lifting platform 2 adopts a Z-axis slide standard part, which is not described in detail here. A lifting platform support plate 22 is provided on the side of the lifting platform 2 away from the fixed end cover 11, and the lifting platform support plate 22 is connected to the fixed end cover 11 through a plurality of connecting columns 21. The spatial position of the lifting platform support plate 22 is fixed. The air floating bearing capacity measuring device of the utility model has stronger stability and higher accuracy.

[0042] Specifically, a displacement sensor connecting block 32 and a pressure sensor connecting block 34 are provided at the upper end of the connecting rod 3, the pressure sensor 340 is connected to the pressure sensor connecting block 34, the displacement sensor 330 is connected to the displacement sensor connecting block 32, and the pressure sensor 340 is arranged between the connecting rod 3 and the lifting platform 2.

[0043] In this embodiment, a gas mixing chamber 14 is provided in the kettle body 1 and between the gas inlet 12 and the measuring position. The setting of the gas mixing chamber 14 can ensure the uniformity of the gas. After the gas enters the gas mixing chamber 14 from the gas inlet 12, it is mixed in the gas mixing chamber 14 and then flows to the porous material on the measuring position 131.

[0044] The working principle of the air-floating bearing capacity measuring device of the utility model is:

[0045] By adjusting the feed amount of the lifting platform 2 above the fixed end cover 11, the displacement sensor 330 reading when the air buoyancy bearing block 31 contacts the porous material is obtained; the feed amount of the lifting platform 2 is adjusted, the distance between the pressure sensor 340 and the fixed end cover 11 is changed and fixed, and the displacement sensor 330 reading at this time is recorded; gas is introduced into the kettle body 1 through the gas inlet 12 of the kettle body 1, and after the gas flows through the porous material, it provides the air buoyancy bearing block 31 with upward buoyancy, so that the arc groove of the air buoyancy bearing block 31 contacts the limiting block 30, and the limiting block 30 limits the floating height of the air buoyancy bearing block 31. The thickness of the air film is determined according to the change of the displacement sensor 330 reading, and the pressure value output by the pressure sensor 340 is the size of the air buoyancy under the thickness of the air film. After changing the distance between the pressure sensor 340 and the fixed end cover 11, the above operation is repeated to obtain the air film stiffness data curve under different air pressures.

[0046] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An air flotation bearing capacity measuring device, used to measure the air flotation of a material to be measured, characterized in that: It includes a kettle body, a displacement sensor, a pressure sensor, an air film thickness control component, an air buoyancy bearing block and a connecting rod; the kettle body is provided with a fixed end cover, the air film thickness control component is arranged on the top of the fixed end cover, the bottom of the kettle body is provided with an air inlet, a measuring position for placing the material to be measured is arranged between the air inlet and the fixed end cover, and the air inlet is communicated with the measuring position; the top of the connecting rod is connected to the fixed end cover, and the fixed end cover is provided with a plurality of exhaust through holes; the air film thickness control component can adjust the position of the connecting rod, the air buoyancy bearing block is arranged above the measuring position, the air buoyancy bearing block is arranged directly below the connecting rod, the displacement sensor is arranged on the connecting rod, and the pressure sensor is arranged between the air film thickness control component and the connecting rod.

2. The air-floating bearing capacity measuring device according to claim 1, characterized in that: A limiting block is provided at one end of the connecting rod close to the air buoyancy bearing block. The limiting block is set as a spherical structure. An arc-shaped groove matching the outer peripheral contour of the limiting block is provided on the air buoyancy bearing block.

3. The air-floating bearing capacity measuring device according to claim 1, characterized in that: A fixing plate and a fixing plate end cover are provided inside the kettle body, a first air inlet channel is provided on the fixing plate, a second air inlet channel is provided on the fixing plate end cover, and the measuring position is provided between the first air inlet channel and the second air inlet channel.

4. The air-floating bearing capacity measuring device according to claim 3, characterized in that: A first sealing groove is provided on the contact surface between the fixing plate and the fixing plate end cover, and a second sealing ring is provided in the first sealing groove.

5. The air-floating bearing capacity measuring device according to claim 3, characterized in that: The fixing plate is provided with an annular step, and the fixing plate end cover is provided with an annular protrusion structure, the inner diameter of the annular step is smaller than the outer diameter of the material to be measured; when the fixing plate is fixedly connected to the fixing plate end cover, the space formed by the annular step and the annular protrusion structure is adapted to the outer peripheral contour of the material to be measured.

6. The air-floating bearing capacity measuring device according to claim 5, characterized in that: The annular protrusion structure is provided with a plurality of guide members arranged at intervals, and ventilation grooves for gas circulation are provided between adjacent guide members.

7. The air-floating bearing capacity measuring device according to claim 5, characterized in that: A second sealing groove is provided on the annular step of the fixing plate, and a third sealing ring is provided in the second sealing groove.

8. The air-floating bearing capacity measuring device according to claim 1, characterized in that: The air film thickness control component comprises a lifting platform. A lifting platform support plate is provided on a side of the lifting platform away from the fixed end cover. The lifting platform support plate is connected to the fixed end cover via a plurality of connecting columns.

9. The air-floating bearing capacity measuring device according to claim 8, characterized in that: A displacement sensor connection block and a pressure sensor connection block are provided at the upper end of the connecting rod, the pressure sensor is connected to the pressure sensor connection block, the displacement sensor is connected to the displacement sensor connection block, and the pressure sensor is arranged between the connecting rod and the lifting platform.

10. The air-floating bearing capacity measuring device according to claim 1, characterized in that: A gas mixing chamber is provided in the kettle body and between the gas inlet and the measuring position.

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