Detachable air suspension fan bearing

Abstract

The invention discloses a detachable air suspension draught fan bearing, and relates to the technical field of bearings, the detachable air suspension draught fan bearing comprises four base foil pieces, the inner surface wall of each base foil piece is provided with a bump foil piece, a top foil body is arranged among the inner surface walls of the four bump foil pieces, the inner surface wall of the top foil body is provided with a notch, and the notch is provided with a through hole. A notch is formed in the top foil body, an expanding top foil part is fixedly installed at one end of the top foil body and movably arranged in the notch, the outer surface wall of the expanding top foil part fixedly communicates with a plurality of sets of air guide connectors, a plurality of sets of holes are formed in the four bump foil parts, and a set of exhaust bins are fixedly installed on the inner surface walls of the top foil body and the expanding top foil part. A group of air inlet holes are formed in each air exhaust bin, the mode of combining information monitoring and mechanical assistance is adopted, so that the bearing has the intermittent air guide capacity, the situation that the bump foil piece is in an extruded state for a long time is avoided, one-way external force impact is prevented from being generated, the deformation probability of the bump foil piece is reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to a detachable air suspension fan bearing. Background Art

[0002] Air bearing is a kind of precision bearing technology that uses gas (usually compressed air) as lubrication and support medium. It is widely used in high-speed rotating machinery, precision measuring instruments, semiconductor manufacturing equipment, aerospace and other fields.

[0003] Air bearings have the ability to reduce friction and wear, effectively improve transmission efficiency and reduce noise, and have the characteristics of strong reliability and easy maintenance. Because the power systems used in suspension fans mostly adopt magnetic levitation technology, air bearings can give full play to their capabilities, making air bearings an indispensable part in the field of suspension fans.

[0004] However, the existing air suspension fan bearings have the following shortcomings:

[0005] The bearing operation uses compressed air or inert gas as the lubricating medium of the main shaft. In order to avoid the disappearance of the air film during the process, gas needs to be continuously delivered to the bearing. However, due to the limitations of its own structure, the traditional air bearing cannot reasonably control the amount of gas entering. When the delivery volume is greater than the consumption, the air film pressure increases, resulting in a high friction coefficient between the gas medium and the machine, increasing the mechanical load, and increasing the number of vibrations and instantaneous impacts. When the external force applied to the foil exceeds its maximum elastic range, it is easy to cause the foil to deform.

[0006] Therefore, we propose a detachable air suspension fan bearing to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a detachable air-suspended fan bearing, which optimizes the traditional structural layout, improves the gas delivery method, and with the cooperation of the sensing component and the mechanical component, obtains the shrinkage and expansion changes of the main structure in real time, and independently controls the air pressure through intermittent air conduction, thereby reducing the probability of some main parts being compressed and deformed, so as to solve the problems raised by the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a detachable air suspension fan bearing, comprising four base foil parts, each of the inner surface walls of the base foil parts is provided with a corrugated foil part, a top foil body is provided between the inner surface walls of the four corrugated foil parts, a notch is provided on the inner surface wall of the top foil body, an extended top foil part is fixedly installed on one end of the top foil body, the extended top foil part is movably placed inside the notch, the outer surface wall of the extended top foil part is fixedly connected with multiple groups of air guide joints, multiple groups of holes are provided inside the four corrugated foil parts, the top foil body and the extended top foil part are fixedly connected with multiple groups of air guide joints ... A group of exhaust bins are fixedly installed on the inner surface wall of the component, and a group of air intake holes are opened inside each of the exhaust bins, and each of the air intake holes is connected to a corresponding air guide joint. A plurality of air guide cavities are fixedly inserted inside the four base foil components, and a telescopic tube is movably inserted inside each of the air guide cavities, and an exhaust end of each telescopic tube is fixedly connected to an arc-surface induction nozzle, and an active spring is fixedly installed between each of the air guide cavities and the arc-surface induction nozzle, and each of the active springs is movably sleeved on the outer surface wall of a corresponding telescopic tube.

[0009] Preferably, a group of positioning bases are fixedly mounted on the inner surface walls of the top foil body and the extended top foil member, a guide plate is fixedly mounted on the outer surface wall of each positioning base, and a blocking frame is fixedly mounted inside the exhaust bin.

[0010] Preferably, cross bars are fixedly inserted on both sides of the inner wall of each exhaust bin, and a square seat is movably sleeved on the outer wall of each cross bar, and a limiting current plate is inserted inside each square seat.

[0011] Preferably, a group of first movable components are fixedly installed on the outer wall of each of the flow limiting plates, a second movable component is fixedly installed on one side of the inner wall of each of the exhaust bins, a damping rod is fixedly inserted inside each of the first movable components, and the axial end of each damping rod is fixedly inserted inside a corresponding second movable component.

[0012] Preferably, the air inlet end of each of the air guide joints is fixedly connected to an external joint, the air inlet ends of each group of the external joints are fixedly connected to a diversion component, the outer wall of each diversion component is fixedly installed with an external frame, and the outer wall of each external frame is fixedly installed with a booster box.

[0013] Preferably, the top of each of the booster boxes is fixedly connected to an air inlet connector, the outer wall of each of the booster boxes is fixedly connected to a delivery pipe, and the exhaust end of the delivery pipe passes through the outer wall of a corresponding diversion component and is connected to the interior of the diversion component.

[0014] Preferably, a first extended positioning plate is fixedly installed at one end of the top foil body, a second extended positioning plate is fixedly installed at both ends of each of the first extended positioning plates, and every two relative second extended positioning plates form a group, and a third extended positioning plate is fixedly installed at both ends of each of the wave foil parts, and every two relative third extended positioning plates form a group.

[0015] Preferably, a group of the second extended positioning plates, the third extended positioning plates and one first extended positioning plate constitute a first assembly part, inner lining plates are provided between the three groups of the third extended positioning plates, three groups of the second extended positioning plates, the third extended positioning plates and three inner lining plates constitute three second assemblies, and a group of through circular holes are provided inside a first assembly part of the three second assemblies.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, when the main shaft speed increases, the friction coefficient with the gas increases, and the temperature is also on an upward trend. At this time, the air pressure inside the cavity is high, and the reverse thrust generated can realize the expansion of the top foil body, and then the airway will be displaced to varying degrees. The relevant sensing components can be separated from the airway with the cooperation of the mechanical components, and the detected signals are directly shared with the fan system, temporarily stopping the air supply in the cavity. Due to the disappearance of the air source and the tendency of the gas to flow to low pressure, the consumption of the gas in the cavity can be accelerated. After the air pressure range is reduced to a certain range, each component is reset to continue the gas supply. In this way, the bearing can have the ability of intermittent air conduction, avoid the wave foil being in an extrusion state for a long time, prevent the generation of unidirectional external force impact, reduce the deformation probability of the wave foil, and extend the service life of the bearing.

[0018] 2. In the present invention, the gas guide component and the intervention component cooperate with each other so that the released gas can be set according to the rotation direction of the main shaft. This method is convenient for the formation of the initial air film flow direction and ensures that the air film can tend to stability in a short time without the centripetal force provided by the main shaft to guide it, thereby speeding up the main shaft stabilization time and improving the fan start-up efficiency.

[0019] 3. In the present invention, the bearing is designed in a modular manner. The main part can be assembled from multiple components. With the cooperation of related components, the difficulty of disassembling and assembling the bearing is effectively reduced. At the same time, each foil part is independent of each other. If one of them is deformed, there is no need to replace all of them, thereby greatly reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a main structural stereogram of a detachable air suspension fan bearing of the present invention;

[0021] Figure 2 The present invention provides a detachable air suspension fan bearing. Figure 1A magnified stereoscopic image of the structure in the middle.

[0022] Figure 3 This is a three-dimensional diagram of the middle structure of the main body of a detachable air suspension fan bearing of the present invention;

[0023] Figure 4 This is a three-dimensional diagram of the inner structure of the main body of a detachable air suspension fan bearing of the present invention;

[0024] Figure 5 It is an enlarged three-dimensional diagram of a part of the structure of a detachable air suspension fan bearing of the present invention;

[0025] Figure 6 The present invention provides a detachable air suspension fan bearing. Figure 5 The enlarged stereogram of the structure at B in the middle;

[0026] Figure 7 It is an enlarged stereoscopic view of the structure connected with the exhaust bin in a detachable air suspension fan bearing of the present invention;

[0027] Figure 8 The present invention is a schematic diagram of the operation of a detachable air suspension fan bearing.

[0028] In the figure: 1, base foil; 2, wave foil; 3, first extended positioning plate; 4, top foil body; 5, notch; 6, extended top foil; 7, air guide joint; 8, hole; 9, blocking frame; 10, positioning base; 11, guide plate; 12, exhaust bin; 13, air intake hole; 14, square seat; 15, flow limiting plate; 16, first movable component; 17, second movable component; 18, damping rod; 19, air guide cavity; 20, telescopic tube; 21, arc induction nozzle; 22, active spring; 23, external joint; 24, diversion component; 25, external frame; 26, booster box; 27, air intake joint; 28, second extended positioning plate; 29, third extended positioning plate; 30, lining plate; 31, through circular hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please see attached Figure 1 -Attached Figure 7As shown, the present invention provides a technical solution: a detachable air suspension fan bearing, comprising four base foil parts 1, each base foil part 1 has a corrugated foil part 2 on its inner surface wall, and a top foil body 4 is provided between the inner surface walls of the four corrugated foil parts 2.

[0031] Embodiment 1, according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the inner surface wall of the top foil body 4 is provided with a notch 5, an extended top foil piece 6 is fixedly installed at one end of the top foil body 4, the extended top foil piece 6 is movably placed inside the notch 5, the outer surface wall of the extended top foil piece 6 is fixedly connected with multiple groups of air guide joints 7, multiple groups of holes 8 are provided inside the four wave foil pieces 2, multiple groups of air guide cavities 19 are fixedly inserted inside the four base foil pieces 1, a telescopic tube 20 is movably inserted inside each air guide cavity 19, an exhaust end of each telescopic tube 20 is fixedly connected with an arc-surface induction nozzle 21, an active spring 22 is fixedly installed between each air guide cavity 19 and the arc-surface induction nozzle 21, and each active spring 22 is movably sleeved on the outer surface wall of a corresponding telescopic tube 20.

[0032] The effect achieved by the entire embodiment 1 is as follows: by setting the above-mentioned components, during the operation of the bearing, each gas guide cavity 19 completes the delivery of gas and continuously injects it between the top foil body 4 and the main shaft. Since one end of the top foil body 4 is integrally equipped with an expansion top foil member 6, the integrity of the top foil body 4 can be ensured, and the gas film can be prevented from escaping due to gaps when the inner diameter is expanded after the gas film is generated. When the main shaft is running, the gas film formed in the cavity can provide support for the shaft body from multiple directions. When the main shaft speed increases, the friction coefficient with the gas increases, and the temperature is also on the rise. At this time, the air pressure inside the cavity is high, and the reverse The thrust can realize the expansion of the top foil body 4, and then realize the displacement of the airway. The relevant sensing components can be separated from the airway with the cooperation of the mechanical components. The detected signals are directly shared with the fan system, temporarily stopping the air supply in the cavity. Due to the disappearance of the air source and the tendency of the gas to flow to low pressure, the consumption of the gas in the cavity can be accelerated. After the air pressure range is reduced to a certain range, each component is reset to continue the gas supply. In this way, the bearing can have the ability of intermittent air conduction, avoid the wave foil part 2 being in an extrusion state for a long time, prevent the generation of unidirectional external force impact, reduce the deformation probability of the wave foil part 2, and extend the service life of the bearing.

[0033] The gas guide joint 7, hole 8 and gas guide cavity 19 proposed in Example 1 are discussed as follows:

[0034] The plurality of gas guide joints 7 are equidistantly distributed on the outer wall of the top foil body 4 , so that the top foil body 4 will produce displacements to different degrees when expanding and contracting.

[0035] A plurality of groups of holes 8 are equidistantly distributed in each bump foil member 2, and the inner diameter of the bump foil member 2 is larger than the air guide cavity 19. The purpose is that when the bump foil member 2 is deformed, the holes 8 will also change to a certain extent. However, the flattened surface is not enough to affect the initial position of each air guide cavity 19, thereby realizing the mutual independence of the air guide cavity 19 and the bump foil member 2, and avoiding limiting the original function of the bump foil member 2.

[0036] The initial spacing between the exhaust end of the air guide cavity 19 and the top foil body 4 is relatively long. This setting can avoid restricting the expansion of the top foil body 4 .

[0037] Embodiment 2, according to Figure 2 and Figure 7 As shown, a group of exhaust bins 12 are fixedly installed on the inner surface wall of the top foil body 4 and the extended top foil member 6, and a group of air intake holes 13 are opened inside each exhaust bin 12, and each air intake hole 13 is respectively connected to a corresponding air guide joint 7, and a group of positioning bases 10 are fixedly installed on the inner surface wall of the top foil body 4 and the extended top foil member 6, and a guide plate 11 is fixedly installed on the outer surface wall of each positioning base 10, and cross bars are fixedly inserted on both sides of the inner wall of each exhaust bin 12, and the outer surface wall of each cross bar is The movable sleeve is provided with a square seat 14, and a limiting plate 15 is inserted inside each square seat 14. A group of first movable components 16 are fixedly installed on the outer wall of each limiting plate 15. A second movable component 17 is fixedly installed on one side of the inner wall of each exhaust bin 12. A damping rod 18 is fixedly inserted inside each first movable component 16, and the axial end of each damping rod 18 is fixedly inserted inside a corresponding second movable component 17. A blocking frame 9 is fixedly installed inside the exhaust bin 12.

[0038] The effect achieved by the entire embodiment 2 is: this part of the components is divided into two parts, one is the air guide component, and the other is the intervention component, so that the released gas can be set according to the rotation direction of the main shaft. This method is convenient for the formation of the initial air film flow direction, ensuring that the air film can tend to stability in a short time, without the need for the centripetal force provided by the main shaft to guide, thereby accelerating the main shaft stabilization time and improving the fan start-up efficiency.

[0039] Embodiment 3, according to Figure 1 , Figure 2 and Figure 3As shown, the air inlet end of each air guide joint 7 is fixedly connected to an external joint 23, the air inlet ends of each group of external joints 23 are fixedly connected to a diversion assembly 24, the outer wall of each diversion assembly 24 is fixedly installed with an external frame 25, the outer wall of each external frame 25 is fixedly installed with a booster box 26, the top of each booster box 26 is fixedly connected to an air inlet joint 27, the outer wall of each booster box 26 is fixedly connected to a delivery pipeline, and the exhaust end of the delivery pipeline passes through the outer wall of a corresponding diversion assembly 24, and is connected to the interior of the diversion assembly 24.

[0040] The effect achieved by the entire embodiment 3 is as follows: by presetting the above-mentioned components, the booster box 26 is used for gas transport medium, and the secondary pressurization of the gas is achieved by utilizing the incoming volume. On the one hand, when the gas supply is temporarily withdrawn, the continuously transported gas can be temporarily stored in the booster box 26, and on the other hand, it is ensured that the gas can be injected into the cavity at high speed from multiple directions.

[0041] Embodiment 4, according to Figure 1 , Figure 2 and Figure 3 As shown, a first extended positioning plate 3 is fixedly installed at one end of the top foil body 4, second extended positioning plates 28 are fixedly installed at both ends of each first extended positioning plate 3, and every two relative second extended positioning plates 28 form a group, and third extended positioning plates 29 are fixedly installed at both ends of each wave foil member 2, and every two relative third extended positioning plates 29 form a group, a group of second extended positioning plates 28, third extended positioning plates 29 and one first extended positioning plate 3 constitute a first assembly part, inner lining plates 30 are arranged between the three groups of third extended positioning plates 29, three groups of second extended positioning plates 28, third extended positioning plates 29 and three inner lining plates 30 constitute three second assemblies, and a group of through circular holes 31 are opened inside one of the first assembly parts of the three second assemblies.

[0042] The effect achieved by the entire embodiment 4 is as follows: the bearing is mainly composed of three parts, namely the base foil part 1, the bump foil part 2 and the top foil body 4, and adopts a modular design. The main part can be assembled from multiple components, and with the cooperation of related components, the difficulty of disassembly and assembly of the bearing is effectively reduced.

[0043] The working principle of the bearing is as follows: in the positioning stage, the main structure is first assembled, and each corrugated foil piece 2 is merged with the inner wall of a corresponding base foil piece 1 in turn, and the top foil body 4 is placed inside the corrugated foil piece 2. Each component is fine-tuned so that the first extended positioning plate 3, the second extended positioning plate 28, the third extended positioning plate 29 and the inner lining plate 30 can all fit correspondingly, and the built-in through circular holes 31 of the first assembly part and the second assembly part formed are all in a flush state. Select a suitable locking part to fix the bearing body. After completion, it is assembled into the bearing box at the front end of the fan, and the external air pipe is connected and fixed with the air inlet joint 27 in turn. At this time, the main shaft of the fan is placed inside the top foil body 4.

[0044] During the startup phase, the gas is continuously transported through the outer tube into each booster box 26. As the volume of the gas inside increases, the air pressure intensity gradually increases, and part of the gas is continuously squeezed into the connected transport pipe. The gas is then evenly distributed to each gas guide cavity 19 by the diverter assembly 24, and then transported into each exhaust bin 12 through the telescopic tube 20 and the gas guide joint 7. At this time, the high-speed flowing gas will apply pressure thrust to the reverse side of each flow limiting plate 15. By utilizing the movable connection between the cross bar and the square seat 14, the airway of each exhaust bin 12 is in an open state. After being blocked by each guide plate 11, multiple beams of continuously flowing gas are injected between the top foil body 4 and the main shaft in a circular flow manner. After the main shaft rotates, the gas flowing in the same direction can assist the main shaft to rotate, avoid reverse friction, and quickly form an air film between the top foil body 4 and the outer wall of the main shaft.

[0045] During the operation stage, when the load of the main shaft increases, the initial speed increases, the friction frequency with the gas medium increases, and the internal temperature is forced to increase, increasing the original air pressure of the air film. During the process, the top foil body 4 begins to expand outward, and the partially expanded top foil piece 6 will slowly slide out of the notch 5. At the same time, the position of each group of air guide joints 7 also shows different degrees of displacement. As the displacement continues to increase, the inclined surface of each arc-surface induction nozzle 21 gradually separates from the corresponding air guide joint 7, and the generated induction signal is shared with the fan system in real time. The gas supply is closed by the relevant air valve, and the air film between the top foil body 4 and the main shaft begins to self-consume. During the process, after the reverse side of each limiting plate 15 loses thrust, the damping rod 18 in the compressed state can be pushed back by the built-in spring to make its inner shaft begin to extend out of the cavity, which is achieved by using the active characteristics of the first movable component 16 and the second movable component 17. When the limiting plate 15 is reset, the reverse side It can fully cover the blocking frame 9, thereby limiting the rotation direction of the flow limiting plate 15 and preventing the gas in the air film from flowing back into the guide channel. After the air pressure continues to decrease, the expanded top foil piece 6 begins to reset, the top foil body 4 begins to shrink, and each group of air guide joints 7 also slowly resets to their original positions. During the process, when the outer wall of each air guide joint 7 contacts the inclined surface of a corresponding arc-surface sensing nozzle 21, the active connection between the telescopic tube 20 and the air guide cavity 19 is utilized to generate a reverse thrust that can force the telescopic tube 20 to retract into the air guide cavity 19, while the active spring 22 is in a compressed state. When the air guide joint 7 and the arc-surface sensing nozzle 21 are relative to each other, the reverse force generated by the active spring 22 will push the arc-surface sensing nozzle 21 to be accurately inserted into the air inlet end of the air guide joint 7, and the airway is constructed again. When the inclined surface of each air guide joint 7 is completely covered, the obtained signal can be quickly acquired by the fan system, and gas delivery is performed.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable air suspension fan bearing, characterized in that: The invention comprises four base foil members (1), each of which is provided with a corrugated foil member (2) on its inner surface wall, a top foil body (4) is provided between the inner surface walls of the four corrugated foil members (2), a notch (5) is provided on the inner surface wall of the top foil member (4), an extended top foil member (6) is fixedly installed at one end of the top foil member (4), the extended top foil member (6) is movably placed inside the notch (5), the outer surface wall of the extended top foil member (6) is fixedly connected with a plurality of groups of air guide joints (7), a plurality of groups of holes (8) are provided inside the four corrugated foil members (2), a group of exhaust bins (12) are fixedly installed on the inner surface walls of the top foil member (4) and the extended top foil member (6), and each of the top foil members (4) and the extended top foil member (6) has a plurality of groups of holes (8) arranged inside the four corrugated foil members (2), and a group of exhaust bins (12) are fixedly installed on the inner surface walls of the top foil member (4) and the extended top foil member (6). A group of air inlet holes (13) are provided inside the exhaust bin (12), and each of the air inlet holes (13) is connected to a corresponding air guide joint (7). A plurality of air guide cavities (19) are fixedly inserted inside the four base foil pieces (1), and a telescopic tube (20) is movably inserted inside each of the air guide cavities (19). The exhaust end of each of the telescopic tubes (20) is fixedly connected to a curved induction nozzle (21), and an active spring (22) is fixedly installed between each of the air guide cavities (19) and the curved induction nozzle (21), and each of the active springs (22) is movably sleeved on the outer wall of a corresponding telescopic tube (20).

2. The detachable air suspension fan bearing according to claim 1 is characterized in that: A group of positioning bases (10) are fixedly mounted on the inner surface walls of the top foil body (4) and the extended top foil member (6), a guide plate (11) is fixedly mounted on the outer surface wall of each positioning base (10), and a blocking frame (9) is fixedly mounted inside the exhaust bin (12).

3. The detachable air suspension fan bearing according to claim 1 is characterized in that: Cross bars are fixedly inserted on both sides of the inner wall of each exhaust bin (12), and a square seat (14) is movably sleeved on the outer wall of each cross bar, and a limiting plate (15) is inserted inside each square seat (14).

4. The detachable air suspension fan bearing according to claim 3 is characterized in that: A group of first movable components (16) are fixedly mounted on the outer wall of each of the limiting plates (15), a second movable component (17) is fixedly mounted on one side of the inner wall of each of the exhaust bins (12), a damping rod (18) is fixedly inserted inside each of the first movable components (16), and the axial end of each of the damping rods (18) is fixedly inserted inside a corresponding second movable component (17).

5. The detachable air suspension fan bearing according to claim 1 is characterized in that: The air inlet end of each of the air guide joints (7) is fixedly connected to an external joint (23), the air inlet ends of each group of the external joints (23) are fixedly connected to a flow diversion component (24), the outer wall of each of the flow diversion components (24) is fixedly mounted with an external frame (25), and the outer wall of each of the external frames (25) is fixedly mounted with a boost box (26).

6. The detachable air suspension fan bearing according to claim 5 is characterized in that: The top of each boost box (26) is fixedly connected to an air inlet connector (27), the outer wall of each boost box (26) is fixedly connected to a delivery pipeline, and the exhaust end of the delivery pipeline passes through the outer wall of a corresponding diversion component (24) and is connected to the interior of the diversion component (24).

7. The detachable air suspension fan bearing according to claim 1 is characterized in that: A first extended positioning plate (3) is fixedly mounted on one end of the top foil body (4), second extended positioning plates (28) are fixedly mounted on both ends of each of the first extended positioning plates (3), and every two of the second extended positioning plates (28) form a group, and third extended positioning plates (29) are fixedly mounted on both ends of each of the corrugated foil pieces (2), and every two of the third extended positioning plates (29) form a group.

8. The detachable air suspension fan bearing according to claim 7 is characterized in that: A group of the second extended positioning plates (28), the third extended positioning plates (29) and a first extended positioning plate (3) constitute a first assembly component, and inner lining plates (30) are provided between the three groups of the third extended positioning plates (29). The three groups of the second extended positioning plates (28), the third extended positioning plates (29) and the three inner lining plates (30) constitute three second assembly components, and a group of through circular holes (31) are provided inside one of the three first assembly components.

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