Sealing structure for vacuum pump and vacuum pump
By designing a sealing structure for a vacuum pump, the coordination of the first seal and the second seal and the design of the fork head are solved, and the problems of inconvenient assembly and complex structure of the vacuum pump are achieved, and the effect of simple assembly and cost reduction is achieved.
Patent Information
- Application Number
- CN202420659071.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-01
AI Technical Summary
During the assembly process of existing vacuum pumps, the overall seal is inconvenient, and when using two seals to fit, the structure is complex and the cost is high.
A sealing structure for a vacuum pump is designed, through the cooperation of the first seal and the second seal, the design of the fork head makes the end of the first seal to perform different positions on the second seal. Resistance simplifies the structure of the fitting position and reduces manufacturing costs.
It realizes convenient assembly of vacuum pumps, simplifies the design of seal structure, reduces manufacturing costs, and improves sealing performance and stability.
Smart Images
Figure CN222458344U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of vacuum equipment, in particular to a sealing structure for a vacuum pump and a vacuum pump. Background Art
[0002] During the assembly process of existing vacuum pumps, different end faces are usually sealed. If an integral seal is used, it is inconvenient to assemble; if two seals are selected for use, the matching position has a complex structure and high manufacturing cost. Utility Model Content
[0003] The utility model provides a sealing structure for a vacuum pump and a vacuum pump, which can simplify the matching position structure of a first sealing member and a second sealing member while facilitating assembly and reducing manufacturing costs.
[0004] The embodiments of the present invention can be implemented as follows:
[0005] The embodiment of the utility model provides a sealing structure for a vacuum pump, which comprises:
[0006] a first seal and a second seal;
[0007] The first seal is used to be arranged on the first sealing surface, the second seal is used to be arranged on the second sealing surface, the first sealing surface and the second sealing surface are staggered, and a fork head is arranged at the end of the first seal, and the fork head abuts against the second seal.
[0008] In the above technical solution, the sealing structure for the vacuum pump can respectively seal the first sealing surface and the second sealing surface through the first sealing member and the second sealing member, and by setting a fork head, the end of the first seal can be supported against different positions on the second seal. On the premise of improving the ease of assembly, the matching position structure of the first seal and the second seal is simplified and the manufacturing cost is reduced.
[0009] Optionally, the bifurcated head includes an extension portion and at least two extrusion portions, the at least two extrusion portions are symmetrically arranged on both sides of the first sealing surface, one end of the extrusion portion is connected to the extension portion, and the other end of the extrusion portion is abutted against the second sealing member.
[0010] In the above technical solution, an extension portion is provided to connect and support the extrusion portion, and at least two extrusion portions are used to press and hold different positions of the second seal to improve the sealing performance between the first seal and the second seal.
[0011] Optionally, the extension direction of the at least two extrusion portions is a first direction, the first direction is parallel to the first seal, and the arrangement direction of the at least two extrusion portions is a second direction, the second direction is parallel to the second sealing surface.
[0012] In the above technical solution, by limiting the extension direction and arrangement direction of the extrusion portion, the sealing effect on the first sealing surface and the second sealing surface can be improved at the same time.
[0013] Optionally, two extrusion protrusions are arranged at intervals at one end of the extrusion portion that abuts against the second sealing member.
[0014] In the above technical solution, extrusion protrusions are arranged at intervals at the end of the extrusion portion, and the two extrusion protrusions respectively abut the second sealing member, thereby improving the sealing effect at the abutting position with the second sealing member.
[0015] Optionally, the arrangement direction of the two extrusion protrusions of the same extrusion portion is a third direction, and the third direction is parallel to the first sealing surface.
[0016] In the above technical solution, by limiting the arrangement direction of the two extrusion protrusions, the sealing effect on the first sealing surface can be improved while abutting and cooperating with the second sealing member.
[0017] Optionally, the extrusion portion is provided with a through hole, and an extending direction of the through hole is parallel to the first sealing surface.
[0018] In the above technical solution, by providing a through hole, it is convenient for the extrusion part to release the deformation after extrusion, avoiding the problem of uneven sealing after extrusion, and thus improving the sealing stability.
[0019] Optionally, a recessed groove is formed at one end of the extrusion portion away from the second sealing member.
[0020] In the above technical solution, by providing the recessed groove, the extrusion portion can be deformed when pressed, so that the two sides of the recessed groove can abut against the side walls of the sealing groove, thereby improving the sealing stability.
[0021] Optionally, the second sealing member is an annular structure.
[0022] In the above technical solution, by limiting the shape of the second sealing member, the second sealing member can be quickly assembled to perform a sealing operation on the second sealing surface.
[0023] Optionally, the number of the first seals and the number of the second seals are both two, the two first seals are arranged at intervals, one second seal is abutted between the first ends of the two first seals, and the other second seal is abutted between the second ends of the two first seals.
[0024] In the above technical solution, by limiting the number and arrangement positions of the first seals and the second seals, the two first seals can cooperate with the two second seals to form a better annular closed structure to ensure the sealing effect.
[0025] An embodiment of the utility model further provides a vacuum pump, including a sealing structure for the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 A schematic structural diagram of a sealing structure for a vacuum pump provided in an embodiment of the utility model;
[0028] Figure 2 This is a schematic structural diagram of a first sealing member provided in an embodiment of the utility model;
[0029] Figure 3 for Figure 2 A magnified schematic diagram of middle III;
[0030] Figure 4 It is a working schematic diagram of the sealing structure for a vacuum pump provided in an embodiment of the utility model.
[0031] Icons: 100 - sealing structure for a vacuum pump; 110 - first sealing member; 115 - forked head; 1151 - extension portion; 1152 - extrusion portion; 1156 - extrusion protrusion; 1157 - through hole; 1158 - recessed groove; 120 - second sealing member; 180 - first sealing surface; 190 - second sealing surface. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] 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 present invention to be protected, but merely represents selected embodiments of the present invention. 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.
[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0035] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.
[0036] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0037] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.
[0038] Unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.
[0040] Please refer to Figure 1-Figure 4The sealing structure 100 for a vacuum pump and the vacuum pump provided in the embodiment of the utility model can solve the above-mentioned problems, which will be described in detail below.
[0041] The sealing structure 100 for a vacuum pump is used for a vacuum pump, and the vacuum pump forms a first sealing surface 180 and a second sealing surface 190 during assembly. The sealing structure 100 for a vacuum pump includes a first sealing member 110 and a second sealing member 120;
[0042] The first seal 110 is used to be arranged on the first sealing surface 180 , and the second seal 120 is used to be arranged on the second sealing surface 190 . The first sealing surface 180 and the second sealing surface 190 are staggered. A forked head 115 is arranged at the end of the first seal 110 , and the forked head 115 abuts against the second seal 120 .
[0043] During operation, the sealing structure 100 for the vacuum pump can respectively seal the first sealing surface 180 and the second sealing surface 190 through the first sealing member 110 and the second sealing member 120, and by providing the fork head 115, the end of the first sealing member 110 can abut against different positions on the second sealing member 120. On the premise of improving the ease of assembly, the matching position structure of the first seal 110 and the second seal 120 is simplified and the manufacturing cost is reduced.
[0044] In this embodiment, the first seal 110 is an open structure, and the second seal 120 is an annular structure. There are two first seals 110 and two second seals 120, and the two first seals 110 are arranged at intervals, one second seal 120 is abutted between the first ends of the two first seals 110, and the other second seal 120 is abutted between the second ends of the two first seals 110.
[0045] The sealing structure 100 for a vacuum pump can make the two first seals 110 cooperate with the two second seals 120 by limiting the shapes, arrangement numbers and positions of the first seals 110 and the second seals 120, thereby forming a better annular closed structure to ensure the sealing effect.
[0046] refer to Figure 2 and Figure 3The fork head 115 includes an extension portion 1151 and at least two extrusion portions 1152. The at least two extrusion portions 1152 are symmetrically arranged on both sides of the first sealing surface 180. One end of the extrusion portion 1152 is connected to the extension portion 1151, and the other end of the extrusion portion 1152 is abutted against the second sealing member 120. The extension portion 1151 is provided to connect and support the extrusion portion 1152, and the at least two extrusion portions 1152 are used to extrude and abut different positions of the second sealing member 120 to improve the sealing performance between the first sealing member 110 and the second sealing member 120.
[0047] In this embodiment, the number of extrusion parts 1152 is two, and both extrusion parts 1152 are in the shape of long strips; of course, in other embodiments of the present invention, the number of extrusion parts 1152 can also be three, five, eight, etc., and the specific number is not limited. The extrusion parts 1152 can also be cylindrical, truncated cone, etc., and the specific shape is not limited.
[0048] refer to Figure 2 and Figure 3 The extension direction of at least two extrusion portions 1152 is a first direction, which is parallel to the first sealing surface 180. The arrangement direction of at least two extrusion portions 1152 is a second direction, which is parallel to the second sealing surface 190. By limiting the extension direction and the arrangement direction of the extrusion portions 1152, the sealing effects on the first sealing surface 180 and the second sealing surface 190 can be improved at the same time.
[0049] It can be understood that the extrusion portion 1152 and the second seal 120 are located in the same plane and can be perpendicular to the second seal 120; in other embodiments of the present invention, the extrusion portion 1152 and the second seal 120 can also be arranged at an angle, and the specific angle can be 75°, 80°, 85°, 95°, 100°, and 105°, etc., and the specific angle is not limited. It should be noted that when at least two extrusion portions 1152 and the second seal 120 are inclined at the same angle, at least two extrusion portions 1152 can remain parallel.
[0050] refer to Figure 2 and Figure 3 From the perspective of improving the sealing effect, the extrusion portion 1152 can be abutted against one end of the second sealing member 120 and two extrusion protrusions 1156 are provided at intervals. The two extrusion protrusions 1156 respectively abut against the second sealing member 120, thereby improving the sealing effect at the abutting position with the second sealing member 120.
[0051] Specifically, the arrangement direction of the two extrusion protrusions 1156 of the same extrusion portion 1152 is a third direction, and the third direction is parallel to the first sealing surface 180. By limiting the arrangement direction of the two extrusion protrusions 1156, the sealing effect on the first sealing surface 180 can be improved while abutting and cooperating with the second sealing member 120.
[0052] refer to Figure 2 and Figure 3 The extrusion portion 1152 may be provided with a through hole 1157, the extension direction of the through hole 1157 being parallel to the first sealing surface 180. By providing the through hole 1157, the extrusion portion 1152 can be easily released from deformation after extrusion, thereby avoiding the problem of uneven sealing after extrusion and improving the sealing stability.
[0053] In this embodiment, the cross-sectional shape of the through hole 1157 is circular; in other embodiments of the present invention, the cross-sectional shape of the through hole 1157 can also be other shapes such as rectangle, triangle, prism and pentagon, and the specific cross-sectional shape is not limited.
[0054] In this embodiment, the number of through holes 1157 provided on a single extrusion portion 1152 is one; in other embodiments of the present invention, the number of through holes 1157 provided on a single extrusion portion 1152 may also be two, three, five, etc. Without affecting the extrusion and supporting effect of the extrusion portion 1152, the specific number of the through holes 1157 is not limited.
[0055] refer to Figure 2-Figure 4 In order to improve the sealing stability, a recessed groove 1158 is provided at one end of the extrusion portion 1152 away from the second sealing member 120. By providing the recessed groove 1158, the extrusion portion 1152 can be deformed when squeezed, so that both sides of the recessed groove 1158 can abut against the side walls of the sealing groove, thereby improving the sealing stability.
[0056] It should be noted that, in order to improve the position stability of the extrusion portion 1152 , a sealing groove is usually provided on the second sealing surface 190 to accommodate the extrusion portion 1152 , so as to prevent the extrusion portion 1152 from being easily deflected when pressing against the second sealing member 120 .
[0057] The embodiment of the utility model also provides a vacuum pump, including a pump body and a sealing structure 100 for the vacuum pump, the pump body including a stator component, a rotating shaft and other components, the stator component including an upper half shell stator component and a lower half shell stator component, the rotating shaft is accommodated between the upper half shell stator component and the lower half shell stator component, and a first sealing surface 180 is formed at the contact position of the upper half shell stator component and the lower half shell stator component, the first sealing component 110 is located on the first sealing surface 180 and is used to seal between the upper half shell stator component and the lower half shell stator component. Other components are arranged at both ends of the stator component, and a second sealing surface 190 is formed between the other components and the stator component, and the second sealing component 120 is located on the second sealing surface 190 and is used to seal between the other components and the stator component.
[0058] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A sealing structure for a vacuum pump, characterized in that: include: A first sealing member (110) and a second sealing member (120); The first sealing member (110) is used to be arranged on a first sealing surface (180), and the second sealing member (120) is used to be arranged on a second sealing surface (190); the first sealing surface (180) and the second sealing surface (190) are staggered; a forked head (115) is arranged at the end of the first sealing member (110), and the forked head (115) abuts against the second sealing member (120).
2. The sealing structure for a vacuum pump according to claim 1, characterized in that: The bifurcated head (115) comprises an extension portion (1151) and at least two extrusion portions (1152), wherein the at least two extrusion portions (1152) are symmetrically arranged on both sides of the first sealing surface (180), one end of the extrusion portion (1152) is connected to the extension portion (1151), and the other end of the extrusion portion (1152) is abutted against the second sealing member (120).
3. The sealing structure for a vacuum pump according to claim 2, characterized in that: The extension direction of the at least two extrusion portions (1152) is a first direction, which is parallel to the first sealing surface (180); the arrangement direction of the at least two extrusion portions (1152) is a second direction, which is parallel to the second sealing surface (190).
4. The sealing structure for a vacuum pump according to claim 2, characterized in that: The extrusion portion (1152) is abutted against one end of the second sealing member (120) and has two extrusion protrusions (1156) spaced apart therefrom.
5. The sealing structure for a vacuum pump according to claim 4, characterized in that: The arrangement direction of the two extrusion protrusions (1156) of the same extrusion portion (1152) is a third direction, and the third direction is parallel to the first sealing surface (180).
6. The sealing structure for a vacuum pump according to claim 2, characterized in that: The extrusion portion (1152) is provided with a through hole (1157), and the extension direction of the through hole (1157) is parallel to the first sealing surface (180).
7. The sealing structure for a vacuum pump according to claim 2, characterized in that: A recessed groove (1158) is formed at one end of the extrusion portion (1152) away from the second sealing member (120).
8. The sealing structure for a vacuum pump according to claim 1, characterized in that: The second sealing member (120) is an annular structure.
9. The sealing structure for a vacuum pump according to claim 1, characterized in that: The number of the first seal (110) and the number of the second seal (120) are both two, the two first seals (110) are arranged at an interval, one second seal (120) is abutted between the first ends of the two first seals (110), and the other second seal (120) is abutted between the second ends of the two first seals (110).
10. A vacuum pump, characterized in that: A sealing structure for a vacuum pump comprising any one of claims 1 to 9.