Vacuum pump bearing sealing cover gasket

Abstract

The utility model relates to the technical field of vacuum pump sealing gaskets, and discloses a vacuum pump bearing sealing cover gasket which comprises a gasket body and a vacuum pump, an annular adsorption groove is formed in the inner side of one side wall of the gasket body, and the gasket body is made of rubber. According to the utility model, one side of the gasket is provided with the adsorption groove, the adsorption groove is attached to the gap between the inner ring and the outer ring of the bearing, when the vacuum pump starts to work, the gap generates negative pressure to pull the adsorption groove to one side of the gap, and the inner ring of the gasket deforms and is in contact extrusion with the rotating shaft, so that the sealing performance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump sealing pads, in particular to a vacuum pump bearing cover gasket. Background Art

[0002] The vacuum pump bearing cover gasket is a key component in the vacuum pump. Its main function is to improve the sealing effect between the cover and the vacuum pump, to prevent air from entering the vacuum chamber of the vacuum pump from the gap between the inner ring and the outer ring of the bearing when the vacuum pump chamber is evacuated. It can also protect the bearing and prevent dust from adhering to the bearing.

[0003] The traditional vacuum pump bearing sealing cover gasket has poor sealing effect during use, which can easily cause gas to enter the vacuum chamber from the bearing gap during the vacuum pumping process, affecting the vacuum pumping efficiency. In addition, friction loss is easily generated when the gasket contacts the vacuum pump shaft, resulting in poor heat dissipation efficiency and a short service life.

[0004] Therefore, those skilled in the art provide a vacuum pump bearing cover gasket to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a vacuum pump bearing cover gasket, which has an adsorption groove on one side of the gasket, and the adsorption groove fits in the gap between the inner ring and the outer ring of the bearing. When the vacuum pump starts working, negative pressure is generated in the gap, which pulls the adsorption groove toward one side of the gap, causing the inner ring of the gasket to deform and come into contact and squeeze with the rotating shaft, thereby greatly improving the sealing performance.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A vacuum pump bearing cover gasket comprises a gasket body and a vacuum pump. An adsorption groove is provided on the inner side of one side wall of the gasket body. The adsorption groove is annular in shape. The gasket body is made of rubber.

[0008] Through the above technical solution, the adsorption groove is adsorbed by the negative pressure of the vacuum pump, so that the inner side of the gasket body is deformed and contacts the rotating shaft, thereby improving its sealing performance. The greater the power of the vacuum pump, the better the sealing performance.

[0009] Furthermore, a central hole is provided in the middle of the gasket body, and a lubricating oil storage tank is provided in the middle of the inner side of the gasket body, and the lubricating oil storage tank is annular in shape;

[0010] Through the above technical solution, lubricating oil can be stored in the lubricating oil storage tank, which can not only lubricate the gasket and the rotating shaft, but also absorb some heat.

[0011] Furthermore, six groups of heat dissipation holes are evenly opened around the gasket body;

[0012] Through the above technical solution, multiple groups of heat dissipation holes can discharge the heat inside the gasket body, thereby improving the heat dissipation efficiency.

[0013] Furthermore, a bearing is fixedly provided on one side of the vacuum pump, and a rotating shaft is rotatably provided in the middle of the bearing;

[0014] Through the above technical solution, the bearing limits the rotating shaft, allowing it to rotate inside the bearing.

[0015] Furthermore, a sealing cover is provided on one side of the vacuum pump, and the gasket body and the sealing cover are sleeved;

[0016] Through the above technical solution, the gasket body is sleeved on the sealing cover, and the gasket can be fixed by installing the sealing cover.

[0017] Furthermore, the adsorption groove is consistent with the bearing gap;

[0018] Through the above technical solution, when the vacuum pump is working, the gap between the outer ring and the inner ring of the bearing generates negative pressure, which can pull the adsorption groove toward one end of the bearing.

[0019] Furthermore, six fixing holes are evenly formed on the gasket body;

[0020] Through the above technical solution, the bolts on the sealing cover pass through the fixing holes and are connected to the vacuum pump, thereby realizing the installation of the gasket.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model proposes a vacuum pump bearing cover gasket, which has an adsorption groove on one side of the gasket. The adsorption groove fits in the gap between the inner ring and the outer ring of the bearing. When the vacuum pump starts working, negative pressure is generated in the gap, which pulls the adsorption groove toward one side of the gap, causing the inner ring of the gasket to deform and come into contact and squeeze with the rotating shaft, thereby greatly improving the sealing performance.

[0023] 2. The utility model proposes a vacuum pump bearing cover gasket, which has a lubricating oil storage tank on the inner side thereof for storing some lubricating oil, which not only lubricates the gasket and the rotating shaft but also absorbs heat. Six groups of heat dissipation holes are provided on the outer side of the gasket, which can improve the heat dissipation efficiency of the gasket, thereby slowing down the aging of the rubber due to heat and increasing the service life of the gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an axonometric view of a vacuum pump bearing cover gasket proposed in the utility model;

[0025] Figure 2 This is a top sectional view of a vacuum pump bearing cover gasket proposed by the present invention;

[0026] Figure 3 This is a schematic diagram of the use of a vacuum pump bearing cover gasket proposed by the utility model;

[0027] Figure 4 The utility model is a schematic diagram of the installation of a vacuum pump bearing cover gasket.

[0028] Legend:

[0029] 1. Gasket body; 2. Adsorption groove; 3. Lubricating oil storage tank; 4. Center hole; 5. Heat dissipation hole; 6. Fixing hole; 7. Vacuum pump; 8. Sealing cover; 9. Rotating shaft; 10. Bearing. DETAILED DESCRIPTION

[0030] The following, in conjunction with the accompanying drawings, provides a clear and complete description of the technical solutions in the embodiments of the present invention. It should be noted that the described embodiments are only some of the embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that the terms used herein are intended solely to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to scale. Technologies, methods, and devices known to persons of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely illustrative and not limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] Reference Figure 1-4 , an embodiment provided by the utility model:

[0032] A vacuum pump bearing cover gasket includes a gasket body 1 and a vacuum pump 7. An adsorption groove 2 is provided on the inner side of one side wall of the gasket body 1. The adsorption groove 2 is annular in shape. The gasket body 1 is made of rubber. The adsorption groove 2 is adsorbed by the negative pressure of the vacuum pump 7, so that the inner side of the gasket body 1 is deformed and contacts the rotating shaft 9, thereby improving its sealing performance. The greater the power of the vacuum pump 7, the better the sealing performance.

[0033] A central hole 4 is provided in the middle of the gasket body 1, and a lubricating oil storage tank 3 is provided in the middle of the inner side of the gasket body 1. The lubricating oil storage tank 3 is annular in shape. Lubricating oil can be stored inside the lubricating oil storage tank 3, which not only lubricates the gasket and the rotating shaft 9, but also absorbs some heat. Six groups of heat dissipation holes 5 are evenly provided around the gasket body 1. Multiple groups of heat dissipation holes 5 can discharge the heat inside the gasket body 1 and improve the heat dissipation efficiency. A bearing 10 is fixedly provided on one side of the vacuum pump 7. A rotating shaft 9 is rotatably provided in the middle of the bearing 10. The bearing 10 is The rotating shaft 9 is limited so that it rotates inside the bearing 10. A sealing cover 8 is provided on one side of the vacuum pump 7. The gasket body 1 and the sealing cover 8 are sleeved. The gasket body 1 is sleeved on the sealing cover 8. The gasket can be fixed by installing the sealing cover 8. The adsorption groove 2 is consistent with the gap of the bearing 10. When the vacuum pump 7 is working, the gap between the outer ring and the inner ring of the bearing 10 generates negative pressure, which can pull the adsorption groove 2 toward one end of the bearing 10. Six fixing holes 6 are evenly opened on the gasket body 1. The bolts on the sealing cover 8 pass through the fixing holes 6 and are connected to the vacuum pump 7 to realize the installation of the gasket.

[0034] Working principle: When the vacuum pump 7 is working, the gap between the outer ring and the inner ring of the bearing 10 generates negative pressure, which can pull the adsorption groove 2 toward one end of the bearing 10. The adsorption groove 2 is adsorbed by the negative pressure of the vacuum pump 7, so that the inner side of the gasket body 1 is deformed and contacts the rotating shaft 9, thereby improving its sealing performance. The greater the power of the vacuum pump 7, the better the sealing performance. The lubricating oil storage tank 3 can store lubricating oil, which not only lubricates the gasket and the rotating shaft 9, but also absorbs some heat. Multiple groups of heat dissipation holes 5 can discharge the heat from the inside of the gasket body 1, thereby improving the heat dissipation efficiency.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vacuum pump bearing cover gasket, comprising a gasket body (1) and a vacuum pump (7), characterized in that: An adsorption groove (2) is provided on the inner side of one side wall of the gasket body (1); the adsorption groove (2) is annular in shape; and the gasket body (1) is made of rubber.

2. A vacuum pump bearing cover gasket according to claim 1, characterized in that: A central hole (4) is provided in the middle of the gasket body (1), and a lubricating oil storage groove (3) is provided in the inner middle of the gasket body (1), wherein the lubricating oil storage groove (3) is annular in shape.

3. The vacuum pump bearing cover gasket according to claim 1, characterized in that: Six groups of heat dissipation holes (5) are evenly arranged around the gasket body (1).

4. The vacuum pump bearing cover gasket according to claim 1, characterized in that: A bearing (10) is fixedly provided on one side of the vacuum pump (7), and a rotating shaft (9) is rotatably provided in the middle of the bearing (10).

5. The vacuum pump bearing cover gasket according to claim 1, characterized in that: A sealing cover (8) is provided on one side of the vacuum pump (7), and the gasket body (1) and the sealing cover (8) are sleeved.

6. The vacuum pump bearing cover gasket according to claim 1, characterized in that: The adsorption groove (2) is consistent with the gap of the bearing (10).

7. The vacuum pump bearing cover gasket according to claim 1, characterized in that: Six fixing holes (6) are evenly arranged on the gasket body (1).

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