A vacuum pump assembly structure and a vacuum pump

Abstract

This utility model provides a vacuum pump assembly structure and a vacuum pump, relating to the field of vacuum pump technology. The vacuum pump assembly structure has a first state and a second state. The assembly structure includes a shaft, a rotor, a bushing, a positioning element, a cavity, and an end plate. The rotor is fixedly mounted on the shaft. In the first state, the bushing and the positioning element are both fitted onto the shaft, and the positioning element abuts against the cavity in the axial direction, so that the cavity abuts against the rotor. The end plate replaces the positioning element and supports the bushing. The bushing pushes the shaft, causing the shaft to drive the rotor to move axially relative to the cavity synchronously, so that the end plate abuts against the cavity, forming an axial gap between the cavity and the rotor. This allows the vacuum pump assembly structure to transition from the first state to the second state. Therefore, the vacuum pump assembly structure is reasonable and easy to assemble, avoiding repeated disassembly and reassembly, and improving assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, and more specifically, to a vacuum pump assembly structure and a vacuum pump. Background Technology

[0002] In the assembly of vacuum pumps, precise control of axial clearance is crucial for ensuring the stability and accuracy of equipment operation. Traditional methods for adjusting axial clearance typically involve using gap gauges for compensation, that is, controlling the axial fit clearance by increasing or decreasing the number or thickness of the gap gauges.

[0003] However, adjustments often require repeated disassembly and reassembly of related components to find the appropriate gap matching state. This process is cumbersome and time-consuming, severely impacting assembly efficiency. Furthermore, the poor assembly accuracy increases assembly difficulty and production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum pump assembly structure and a vacuum pump, which has a reasonable structure and is easy to assemble, avoiding repeated disassembly and assembly and improving assembly efficiency.

[0005] The embodiments of this utility model are implemented as follows: In a first aspect, the present invention provides a vacuum pump assembly structure, which has a first state and a second state. The vacuum pump assembly structure includes a shaft, a rotor, a bushing, a positioning component, a cavity, and an end plate component. The rotor is fixedly disposed on the shaft. In the first state, both the bushing and the positioning member are sleeved on the shaft, and the positioning member abuts against the cavity in the axial direction so that the cavity abuts against the rotor. The end plate is used to replace the positioning member and to hold the bushing. The bushing pushes the shaft so that the shaft drives the rotor to move axially relative to the cavity synchronously, so that the end plate abuts against the cavity to form an axial gap between the cavity and the rotor, thereby changing the vacuum pump assembly structure from the first state to the second state.

[0006] In an optional embodiment, the positioning member includes a first positioning part and a second positioning part. The first positioning part is sleeved on the shaft body, and the second positioning part protrudes from the axial surface of the first positioning part and is located on the outer peripheral side of the first positioning part. When the first positioning part abuts against the bushing, the second positioning part abuts against the cavity.

[0007] In an optional embodiment, the length of the second positioning portion protruding relative to the first positioning portion is equal to the axial clearance.

[0008] In an optional embodiment, the gap between the second positioning part and the shaft body is greater than the radial width of the bushing.

[0009] In an optional embodiment, the cavity is provided with a first end face and a second end face; In the first state, the positioning member abuts against the first end face, so that the second end face abuts against the rotor; In the second state, the end plate abuts against the first end face to form an axial gap between the second end face and the rotor.

[0010] In an optional embodiment, the end plate is provided with a planar abutment portion perpendicular to the shaft, the abutment portion being used to abut against the bushing and the cavity.

[0011] In an optional embodiment, the bushing assembly includes a bearing and a bushing, wherein the rotor, the bushing, and the bearing are sequentially fitted onto the shaft along the shaft axial direction, and the bushing abuts against the positioning member or the end plate member by means of the bearing.

[0012] In an optional embodiment, the bushing kit further includes a shaft seal disposed between the bushing and the cavity.

[0013] Secondly, this utility model provides a vacuum pump, including the vacuum pump assembly structure as described in any of the foregoing embodiments.

[0014] The beneficial effects of the vacuum pump assembly structure and vacuum pump provided by this utility model embodiment include: In the first state, the positioning component makes the cavity abut against the rotor, so that the rotor and the cavity are in close contact, which is beneficial for positioning and fixing in the initial stage of assembly and improves assembly stability; When an axial clearance needs to be formed, only the end plate component needs to be replaced with the positioning component, and the end plate component pushes the bushing component, and the bushing component pushes the shaft, so that the shaft drives the rotor to move axially relative to the cavity synchronously, so that the end plate component abuts against the cavity, thereby forming an axial clearance between the cavity and the rotor, thus realizing the adjustment of the axial clearance between the rotor and the cavity, thereby meeting the assembly requirements; It can be seen that the vacuum pump assembly structure can form an axial clearance between the cavity and the rotor during the assembly process through the positioning component and the end plate component. The conversion process does not require repeated disassembly and assembly of other components, which not only makes the operation simple and greatly simplifies the assembly process, but also effectively improves the assembly efficiency and assembly accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the first state of the vacuum pump assembly structure provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the second state of the vacuum pump assembly structure provided in an embodiment of the present invention.

[0017] Icons: 10-Vacuum pump assembly structure; 100-Shaft; 200-Rotor; 300-Bushel kit; 310-Bearing; 320-Shaft sleeve; 330-Shaft seal; 400-Positioning component; 410-First positioning part; 420-Second positioning part; 500-Cavity; 510-First end face; 520-Second end face; 600-End plate; 610-Abutment part; 700-Axial clearance. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In the assembly of vacuum pumps, precise control of axial clearance is crucial for ensuring the stability and accuracy of equipment operation. Traditional methods for adjusting axial clearance typically involve using gap gauges for compensation, that is, controlling the axial fit clearance by increasing or decreasing the number or thickness of the gap gauges.

[0025] However, adjustments often require repeated disassembly and reassembly of related components to find the appropriate gap matching state. This process is cumbersome and time-consuming, severely impacting assembly efficiency. Furthermore, the poor assembly accuracy increases assembly difficulty and production costs.

[0026] Based on the problems existing in the prior art, this utility model provides a vacuum pump assembly structure that is reasonable and easy to assemble, which can avoid repeated disassembly and assembly and improve the efficiency of gap adjustment.

[0027] In detail, the vacuum pump assembly structure 10 includes a shaft 100, a rotor 200, a bushing 300, a positioning element 400, a cavity 500, and an end plate 600.

[0028] In this embodiment, please refer to Figure 1 and Figure 2 The vacuum pump assembly structure 10 has a first state and a second state.

[0029] Specifically, in the first state, the rotor 200 is fixedly mounted on the shaft 100, the bushing 300 and the positioning member 400 are both sleeved on the shaft 100, and the first positioning part 410 of the positioning member 400 abuts against the cavity 500 in the axial direction, so that the cavity 500 abuts against the rotor 200, so that the rotor 200 and the cavity 500 are in close contact, which is beneficial for positioning and fixing in the initial stage of assembly and improves assembly stability.

[0030] The second state is as follows: the end plate 600 is sleeved on the shaft 100 and abuts against the cavity 500 and the bushing 300, and there is an axial gap 700 between the rotor 200 and the cavity 500.

[0031] In the first state, when an axial clearance of 700 is required, the end plate 600 only needs to replace the positioning piece 400 and be sleeved on the shaft 100. The end plate 600 pushes the bushing 300, and the bushing 300 pushes the shaft 100 so that the shaft 100 drives the rotor 200 to move axially relative to the cavity 500 synchronously, so that the end plate 600 abuts against the cavity 500, thereby forming an axial clearance of 700 between the cavity 500 and the rotor 200. This allows the adjustment of the axial clearance 700 between the rotor 200 and the cavity 500 to meet the assembly requirements.

[0032] Therefore, the vacuum pump assembly structure 10 provided in this embodiment of the present invention can achieve an axial gap 700 between the cavity 500 and the rotor 200 during the assembly process through the positioning component 400 and the end plate component 600. The conversion process does not require repeated disassembly and assembly of other components, which not only makes the operation simple and greatly simplifies the assembly process, but also effectively improves the assembly efficiency and assembly accuracy.

[0033] Furthermore, the positioning component 400 includes a first positioning part 410 and a second positioning part 420, so as to achieve stable axial positioning between the rotor 200 and the cavity 500 during the vacuum pump assembly process through the first positioning part 410 and the second positioning part 420, thus having good assembly guidance and structural reliability.

[0034] Specifically, the first positioning part 410 is annular and sleeved on the shaft 100. The second positioning part 420 protrudes from the axial surface of the first positioning part 410 and is located on the outer periphery of the first positioning part 410. Therefore, the first positioning part 410 abuts against the bushing 300 to initially limit the bushing 300. When the first positioning part 410 abuts against the bushing 300, the second positioning part 420 abuts against the cavity 500 to ensure a tight fit between the rotor 200 and the cavity 500.

[0035] It is evident that the positioning component 400 not only enhances the stability during the assembly process, but also effectively prevents the rotor 200 from shifting or loosening in the early stages of assembly, thereby improving assembly accuracy and efficiency.

[0036] In addition, the positioning component 400 has a simple structure, is easy to process, and is easy to replace. It can be used as a replaceable component for assembly needs in different states, which improves the flexibility and applicability of the overall assembly structure.

[0037] In detail, in order to ensure that the axial clearance 700 that meets the assembly requirements is formed when the subsequent end plate 600 abuts against the cavity 500 and the bushing 300, the second positioning part 420 is stepped relative to the first positioning part 410, and the length of the protrusion of the second positioning part 420 relative to the first positioning part 410 is equal to the axial clearance 700.

[0038] In addition, the gap between the second positioning part 420 and the shaft 100 is greater than the radial width of the bushing 300, thereby preventing the second positioning part 420 from abutting against the bushing 300 and affecting the initial positioning effect of the positioning member 400 on the cavity 500.

[0039] It should be noted that the cavity 500 is provided with at least a first end face 510 and a second end face 520 in the axial direction, and both the first end face 510 and the second end face 520 are perpendicular to the axis of the shaft 100.

[0040] Therefore, in the first state, the positioning member 400 abuts against the first end face 510 so that the second end face 520 abuts against the rotor 200, so that the second end face 520 and the rotor 200 are tightly fitted, so as to ensure the stable positioning of the rotor 200 in the initial stage of assembly, which is conducive to improving the reliability and consistency of the initial assembly.

[0041] In the second state where an axial clearance 700 is required, simply replace the positioning member 400 with the end plate member 600 and make it mate with the first end face 510 to form an axial clearance 700 between the second end face 520 and the rotor 200, thereby achieving a rapid conversion of the assembly state.

[0042] It can be seen that the rigid contact between the first end face 510 and the second end face 520 ensures the accuracy and repeatability of the axial clearance 700 adjustment, avoiding assembly deviations caused by human error or multiple disassembly and assembly in traditional adjustment methods.

[0043] Furthermore, the end plate 600 is provided with a planar abutment portion 610, which is perpendicular to the shaft 100 and is used to abut against the bushing 300 and the cavity 500.

[0044] In this embodiment, by providing a planar abutment portion 610 perpendicular to the shaft 100, it is ensured that the end plate 600 is subjected to uniform force during the movement of the bushing 300 and the shaft 100, avoiding assembly misalignment caused by poor contact or uneven loading, thereby improving the stability and guiding accuracy of the assembly process. Furthermore, the planar abutment portion 610 can simultaneously contact the bushing 300 and the cavity 500, ensuring the reliable formation of the axial clearance 700 in the second state when the end plate 600 simultaneously abuts against both the bushing 300 and the cavity 500.

[0045] Furthermore, the bushing 300 includes a bearing 310 and a bushing 320. The rotor 200, bushing 320, and bearing 310 are sequentially sleeved on the shaft 100 along the axial direction of the shaft 100. The bushing 320 abuts against the positioning member 400 or the end plate member 600 by means of the bearing 310.

[0046] In this embodiment, by arranging the bearing 310 and the bushing 320 sequentially along the axial direction, the bushing 300 not only has good support and guiding functions, but also effectively transmits the axial force from the positioning member 400 or the end plate member 600, thereby ensuring that the axial movement of the rotor 200 and shaft 100 assembly is smooth and reliable during assembly and state transition, and improving the uniformity of force and consistency of movement of the overall structure.

[0047] Furthermore, the bushing 300 also includes a shaft seal 330 disposed between the bushing 320 and the cavity 500.

[0048] Furthermore, this utility model embodiment also provides a vacuum pump, including the vacuum pump assembly structure 10 as described in the above embodiments.

[0049] In summary, this utility model provides a vacuum pump assembly structure 10 and a vacuum pump. In the first state, the positioning member 400 makes the cavity 500 abut against the rotor 200, so that the rotor 200 and the cavity 500 are in close contact, which is beneficial for positioning and fixing in the initial stage of assembly and improves assembly stability. When an axial clearance 700 needs to be formed, it is only necessary to replace the positioning member 400 with the end plate member 600, and make the end plate member 600 push the shaft 100, the bushing 300 and the rotor 200 to move axially relative to the cavity 500, so that the end plate member 600 can move axially relative to the cavity 500. The rotor 200 abuts against the cavity 500 to form an axial clearance 700 between the cavity 500 and the rotor 200, thereby achieving adjustment of the axial clearance 700 between the rotor 200 and the cavity 500 to meet assembly requirements. It can be seen that the vacuum pump assembly structure 10 can achieve the formation of an axial clearance 700 between the cavity 500 and the rotor 200 during the assembly process through the positioning part 400 and the end plate part 600. The conversion process does not require repeated disassembly and assembly of other parts, which not only makes the operation simple and greatly simplifies the assembly process, but also effectively improves the assembly efficiency and assembly accuracy.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum pump assembly structure, characterized in that, The vacuum pump assembly structure has a first state and a second state. The vacuum pump assembly structure includes a shaft (100), a rotor (200), a bushing (300), a positioning component (400), a cavity (500), and an end plate (600). The rotor (200) is fixedly disposed on the shaft (100). In the first state, the bushing (300) and the positioning member (400) are both sleeved on the shaft (100), and the positioning member (400) abuts against the cavity (500) in the axial direction so that the cavity (500) abuts against the rotor (200). The end plate (600) is used to replace the positioning member (400) and to hold the bushing (300). The bushing (300) pushes the shaft (100) so that the shaft (100) drives the rotor (200) to move axially relative to the cavity (500) synchronously, so that the end plate (600) abuts against the cavity (500) to form an axial gap (700) between the cavity (500) and the rotor (200), thereby changing the vacuum pump assembly structure from the first state to the second state.

2. The vacuum pump assembly structure according to claim 1, characterized in that, The positioning component (400) includes a first positioning part (410) and a second positioning part (420). The first positioning part (410) is sleeved on the shaft (100), and the second positioning part (420) protrudes from the axial surface of the first positioning part (410) and is located on the outer periphery of the first positioning part (410). When the first positioning part (410) abuts against the bushing (300), the second positioning part (420) abuts against the cavity (500).

3. The vacuum pump assembly structure according to claim 2, characterized in that, The length of the second positioning part (420) protruding relative to the first positioning part (410) is equal to the axial gap (700).

4. The vacuum pump assembly structure according to claim 2, characterized in that, The gap between the second positioning part (420) and the shaft (100) is greater than the radial width of the bushing (300).

5. The vacuum pump assembly structure according to claim 1, characterized in that, The cavity (500) is provided with a first end face (510) and a second end face (520); In the first state, the positioning member (400) abuts against the first end face (510) so that the second end face (520) abuts against the rotor (200); In the second state, the end plate (600) abuts against the first end face (510) to form an axial gap (700) between the second end face (520) and the rotor (200).

6. The vacuum pump assembly structure according to claim 1, characterized in that, The end plate (600) is provided with a planar abutment portion (610), which is perpendicular to the shaft (100) and is used to abut against the bushing (300) and the cavity (500).

7. The vacuum pump assembly structure according to claim 1, characterized in that, The bushing assembly (300) includes a bearing (310) and a bushing (320). The rotor (200), the bushing (320), and the bearing (310) are sequentially sleeved on the shaft (100) along the axial direction of the shaft body (100). The bushing (320) abuts against the positioning member (400) or the end plate member (600) by means of the bearing (310).

8. The vacuum pump assembly structure according to claim 7, characterized in that, The bushing (300) also includes a shaft seal (330) disposed between the bushing (320) and the cavity (500).

9. A vacuum pump, characterized in that, Includes the vacuum pump assembly structure as described in any one of claims 1-8.

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