CN212804223U - Rotary elastic sealing element for shaft - Google Patents
Rotary elastic sealing element for shaft Download PDFInfo
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- CN212804223U CN212804223U CN202021928590.1U CN202021928590U CN212804223U CN 212804223 U CN212804223 U CN 212804223U CN 202021928590 U CN202021928590 U CN 202021928590U CN 212804223 U CN212804223 U CN 212804223U
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- installation cavity
- seal lip
- shafts
- wall
- hydraulic oil
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Abstract
The utility model discloses an axle is with rotatory elastic sealing element, which comprises a body, the body center is provided with the axle inserting hole that is used for inserting the count output shaft, the body is provided with the installation cavity with the bottom surface of hydraulic oil contact, the installation cavity with form the seal lip between the axle inserting hole, installation cavity internally mounted has and is used for the extrusion the elastic component of seal lip, the installation cavity is the toper structure, the installation cavity is kept away from the inner wall of seal lip is just for the slope structure the diameter size of installation cavity is greater than its bottom diameter size. Has the advantages that: the installation cavity is the toper structure, utilizes the inner wall of its slope can lead hydraulic oil, makes hydraulic oil the same, the even of exerting pressure of direction of exerting pressure to the seal lip, avoids the seal lip to warp, guarantees sealed effect.
Description
Technical Field
The utility model relates to a measure converter technical field, concretely relates to axle is with rotatory elastic sealing member.
Background
The measuring converter is a core component of the fuel oiling machine, most of the converters commonly used at present are measuring converters with four reciprocating pistons, and the working principle of the measuring converter is that fuel with certain pressure sequentially pushes four pistons to reciprocate, and the counting output shaft is driven to rotate when the pistons reciprocate, so that the volume quantity is converted into the rotation quantity of the counting shaft, and the metering of the output fuel flow is realized.
In the manufacturing process of the measurement converter, in order to prevent oil leakage at the counting output shaft, a framework oil seal is often installed on the outer side of the counting output shaft. However, the installation cavity of the existing framework oil seal for installing the spring does not have a flow guiding function, and when hydraulic oil enters the installation cavity, the hydraulic oil has different pressing directions to the sealing lip, so that the pressing is uneven, the deformation of the sealing lip is easily caused, and the effect of the oil seal is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an axle is with rotatory elastic sealing element just in order to solve above-mentioned problem to solve among the prior art current skeleton oil blanket and be used for the installation cavity of installation spring and do not possess the water conservancy diversion effect, when hydraulic oil got into the installation cavity inside, hydraulic oil was different to the direction of exerting pressure of seal lip, and it is inhomogeneous to exert pressure, caused seal lip to warp easily, influenced technical problem such as oil blanket effect. The utility model provides an among a great deal of technical scheme preferred technical scheme installation cavity is the toper structure, utilizes the inner wall of its slope can lead to hydraulic oil, makes hydraulic oil to the seal lip direction of exerting pressure the same, exert pressure evenly, avoids the seal lip to warp, guarantees technical effect such as sealed effect, sees the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a pair of rotatory elastic sealing element is used to axle, which comprises a body, the body center is provided with the axle inserting hole that is used for inserting the count output shaft, the body is provided with the installation cavity with the bottom surface of hydraulic oil contact, the installation cavity with form the seal lip between the axle inserting hole, installation cavity internally mounted has and is used for the extrusion the elastic component of seal lip, the installation cavity is the toper structure, the installation cavity is kept away from the inner wall of seal lip is just for the slope structure the diameter size of installation cavity is greater than its bottom diameter size.
Adopt above-mentioned rotatory elastic sealing element for axle, during the use, because the installation cavity is the toper structure, just the installation cavity is kept away from seal lip's inner wall is the slope structure, gets into when hydraulic oil during the installation cavity is inside, through the slope inner wall of installation cavity carries out the water conservancy diversion to hydraulic oil, makes hydraulic oil to seal lip direction of exerting pressure the same, exert pressure evenly, avoids seal lip to warp, cooperates simultaneously the elastic component is right seal lip carries out the pressure testing, can make seal lip and count output shaft fully contact guarantee sealed effect.
Preferably, the inclination angle alpha of the inner wall of the mounting cavity away from the sealing lip is 70-80 degrees.
Preferably, each edge of the mounting cavity is in arc transition.
Preferably, the elastic piece is an annular spring formed by connecting chrysanthemum spring pieces.
Preferably, a stop ring is formed on the outer side of the sealing lip close to the port of the installation cavity.
Preferably, the bottom of the inner wall of the shaft insertion hole is of a broken line structure.
Preferably, the upper surface of the body is provided with a groove which is coaxially communicated with the shaft inserting hole.
Has the advantages that: the installation cavity is the toper structure, utilizes the inner wall of its slope can lead hydraulic oil, makes hydraulic oil the same, the even of exerting pressure of direction of exerting pressure to the seal lip, avoids the seal lip to warp, guarantees sealed effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of the present invention.
The reference numerals are explained below:
1. a body; 101. an insertion shaft hole; 102. a sealing lip; 103. a blocking ring; 104. a mounting cavity; 105. a groove; 2. an elastic member.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a rotatory elastic sealing element is used to axle, including body 1, body 1 center is provided with the axle inserting hole 101 that is used for inserting the count output shaft, the bottom surface that body 1 and hydraulic oil contact is provided with installation cavity 104, form seal lip 102 between installation cavity 104 and the axle inserting hole 101, the elastic component 2 that is used for extrusion seal lip 102 is installed to installation cavity 104 inside, installation cavity 104 is the toper structure, the inner wall of installation cavity 104 far away from seal lip 102 is the slope structure and the diameter size of installation cavity 104 is greater than its bottom diameter size; preferably, the body 1 is made of modified polytetrafluoroethylene, so that the friction between the body 1 and the counting output shaft can be reduced, and the service life can be prolonged.
As an alternative embodiment, the inclination angle α of the inner wall of the mounting cavity 104 facing away from the sealing lip 102 is 70 ° to 80 °, which is provided to help ensure the guiding effect of the inner wall of the mounting cavity 104 on the hydraulic oil.
Preferably, the angle of inclination α of the mounting cavity 104 away from the inner wall of the sealing lip 102 is 75 °.
Each edge of installation cavity 104 is the arc transition, sets up like this, can reduce the resistance of installation cavity 104 edge to hydraulic oil, guarantees the water conservancy diversion effect to hydraulic oil.
The elastic element 2 is an annular spring formed by connecting chrysanthemum spring pieces, and the arrangement can ensure that the elastic element 2 can uniformly apply pressure to the sealing lip 102.
A stop ring 103 is formed on the outer side of the sealing lip 102 close to the port of the mounting cavity 104, and in this way, the stop ring 103 is used for limiting the elastic part 2, so that the elastic part 2 is prevented from being separated from the inside of the mounting cavity 104.
The bottom of the inner wall of the shaft inserting hole 101 is of a broken line structure, so that a plurality of cavities can be formed between the shaft inserting hole 101 and the counting output shaft, a plurality of oil films can be formed between the sealing lip 102 and the counting output shaft through the cavities, and the friction between the sealing lip 102 and the counting output shaft can be reduced.
The upper surface of the body 1 is provided with a groove 105 which is coaxially communicated with the shaft inserting hole 101, and lubricating oil is injected into the groove 105, so that lubricating oil can be supplemented to a cavity between the sealing lip 102 and the counting output shaft, and an oil film is formed between the sealing lip 102 and the counting output shaft.
Adopt above-mentioned structure, during the use, because installation cavity 104 is the toper structure, and the inner wall that seal lip 102 was kept away from to installation cavity 104 is the slope structure, when hydraulic oil got into installation cavity 104 inside, the slope inner wall through installation cavity 104 carries out the water conservancy diversion to hydraulic oil, make hydraulic oil to seal lip 102 direction of exerting pressure the same, exert pressure evenly, avoid seal lip 102 to warp, cooperate elastic component 2 to carry out the pressure testing to seal lip 102 simultaneously, can make seal lip 102 and count output shaft fully contact, guarantee sealed effect.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A rotary elastomeric seal for a shaft, comprising: including body (1), body (1) center is provided with plug shaft hole (101) that are used for inserting the count output shaft, body (1) is provided with installation cavity (104) with the bottom surface of hydraulic oil contact, installation cavity (104) with form seal lip (102) between plug shaft hole (101), installation cavity (104) internally mounted has and is used for the extrusion elastic component (2) of seal lip (102), installation cavity (104) are the toper structure, installation cavity (104) are kept away from the inner wall of seal lip (102) is inclined structure just the diameter size of installation cavity (104) is greater than its bottom diameter size.
2. The rotary elastomeric seal for shafts of claim 1, wherein: the inclination angle alpha of the inner wall of the mounting cavity (104) far away from the sealing lip (102) is 70-80 degrees.
3. The rotary elastomeric seal for shafts of claim 2, wherein: and all edges and corners of the mounting cavity (104) are in arc transition.
4. The rotary elastomeric seal for shafts of claim 1, wherein: the elastic piece (2) is an annular spring formed by connecting chrysanthemum spring pieces.
5. The rotary elastomeric seal for shafts of claim 4, wherein: a stop ring (103) is formed on the outer side of the sealing lip (102) close to the port of the mounting cavity (104).
6. The rotary elastomeric seal for shafts of claim 1, wherein: the bottom of the inner wall of the plug-in shaft hole (101) is of a broken line structure.
7. The rotary elastomeric seal for shafts of claim 6, wherein: the upper surface of the body (1) is provided with a groove (105) which is coaxially communicated with the plug-in shaft hole (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021928590.1U CN212804223U (en) | 2020-09-07 | 2020-09-07 | Rotary elastic sealing element for shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021928590.1U CN212804223U (en) | 2020-09-07 | 2020-09-07 | Rotary elastic sealing element for shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804223U true CN212804223U (en) | 2021-03-26 |
Family
ID=75088708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021928590.1U Active CN212804223U (en) | 2020-09-07 | 2020-09-07 | Rotary elastic sealing element for shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212804223U (en) |
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2020
- 2020-09-07 CN CN202021928590.1U patent/CN212804223U/en active Active
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