CN217927110U - Pre-tightening valve cover sealing structure for nut - Google Patents
Pre-tightening valve cover sealing structure for nut Download PDFInfo
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- CN217927110U CN217927110U CN202222395198.0U CN202222395198U CN217927110U CN 217927110 U CN217927110 U CN 217927110U CN 202222395198 U CN202222395198 U CN 202222395198U CN 217927110 U CN217927110 U CN 217927110U
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- valve
- valve body
- valve cover
- nut
- cover
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Abstract
The utility model discloses a nut is with pretension valve gap seal structure, include: a valve body; the bracket is arranged at the top of the valve body; the valve cover is arranged in the valve body in a sliding mode, and the top of the valve cover penetrates through the support; the nut is in threaded connection with the top of the valve cover and abuts against the top end face of the support; the baffle ring is horizontally and fixedly arranged in the valve body and sleeved on the valve cover; an accommodating cavity for accommodating the sealing ring is arranged among the baffle ring, the valve body and the side wall of the valve cover; when the nut is rotated, the valve cover moves upwards, the space of the accommodating cavity is reduced, and the sealing ring is extruded; the movement of the valve cover relative to the valve body is realized by rotating the nut, the space of the accommodating cavity is reduced, the sealing ring is stressed and compressed, the gap between the valve cover and the valve body is sealed, and the design of the small-caliber valve is met.
Description
Technical Field
The utility model relates to a valve body seal structure, especially pretension valve gap seal structure for nut.
Background
External leakage of the valve usually causes serious production accidents, so the sealing performance of the valve is an important test content in the valve; the external leakage of the valve usually occurs at the sealing position of the valve cover and the filler, and the valve cover valve with the self-sealing structure can well solve the problem of failure of the sealing of the valve cover under the high-pressure working condition; however, the traditional self-sealing valve cover cannot meet the design of a small-caliber valve and has certain limitation;
in conclusion, how to realize the sealing between the valve cover and the valve body and meet the design of the small-caliber valve is a problem which needs to be solved urgently by researchers in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to realize the sealing of the valve cover and the valve body and meet the design of a small-caliber valve;
in order to solve the technical problem, the utility model discloses the technical scheme who takes does:
the utility model discloses a nut is with pretension valve gap seal structure, include: a valve body; the bracket is arranged at the top of the valve body; the valve cover is arranged in the valve body in a sliding mode, and the top of the valve cover penetrates through the support; the nut is in threaded connection with the top of the valve cover and abuts against the top end face of the support; the baffle ring is horizontally and fixedly arranged in the valve body and sleeved on the valve cover; an accommodating cavity for accommodating the sealing ring is arranged among the baffle ring, the valve body and the side wall of the valve cover; when the nut is rotated, the valve cover moves upwards, the space of the accommodating cavity is reduced, and the sealing ring is extruded;
in the scheme, the support is fixed at an opening at the top of the valve body, the valve cover is arranged in the valve body, the top of the valve cover penetrates through the support, the nut is in threaded connection with the outer wall of the valve cover and abuts against the support, and the nut is rotated to drive the valve cover to ascend relative to the valve body; be provided with in the valve body and keep off the ring, form the holding chamber between valve body, the valve gap lateral wall, the holding intracavity is provided with the sealing ring, valve gap upward movement, and the holding chamber space reduces, and the sealing ring compression this moment to the clearance between sealed valve gap and the valve body.
In order to illustrate the specific structure of the baffle ring, the baffle ring adopts a four-ring structure.
The utility model has the advantages that: the utility model discloses a nut is with pretension valve gap seal structure realizes the valve gap through rotating the nut for the motion of valve body, reduces the holding chamber space for the compression of sealing ring atress, thereby the clearance between sealing valve gap and the valve body satisfies the design of small-bore valve.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic view of a retainer ring;
in the figure: 1-valve body, 2-bracket, 3-valve cover, 4-nut, 5-baffle ring, 6-sealing ring.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the utility model discloses a pretension valve gap seal structure for nut, include: a valve body 1; the bracket 2 is arranged at the top of the valve body 1; the valve cover 3 is arranged in the valve body 1 in a sliding mode, and the top of the valve cover passes through the support 2; the nut 4 is in threaded connection with the top of the valve cover 3 and abuts against the top end face of the support 2; the baffle ring 5 is horizontally and fixedly arranged in the valve body 1 and sleeved on the valve cover 3; an accommodating cavity for accommodating a sealing ring 6 is arranged among the baffle ring 5, the valve body 1 and the side wall of the valve cover 3; when the nut 4 is rotated, the valve cover 3 moves upwards, the space of the accommodating cavity is reduced, and the sealing ring 6 is extruded;
in the scheme, the support is fixed at an opening at the top of the valve body, the valve cover is arranged in the valve body, the top of the valve cover penetrates through the support, the nut is in threaded connection with the outer wall of the valve cover and abuts against the support, and the nut is rotated to drive the valve cover to ascend relative to the valve body; be provided with in the valve body and keep off the ring, keep off and form the holding chamber between ring, valve body, the valve gap lateral wall, the holding intracavity is provided with the sealing ring, and the valve gap rebound, holding chamber space reduces, and the sealing ring compression this moment to the clearance between sealed valve gap and the valve body.
As shown in fig. 2, in order to explain a specific structure of the baffle ring 5, a four-ring structure is adopted as the baffle ring.
The utility model discloses a nut is with pretension valve gap seal structure realizes the valve gap through rotating the nut for the motion of valve body, reduces the holding chamber space for the compression of sealing ring atress, thereby the clearance between sealing valve gap and the valve body satisfies the design of small-bore valve.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.
Claims (2)
1. Pretension valve gap seal structure for nut, its characterized in that includes:
a valve body;
the bracket is arranged on the top of the valve body;
the valve cover is arranged in the valve body in a sliding mode, and the top of the valve cover penetrates through the bracket;
the nut is in threaded connection with the top of the valve cover and abuts against the top end face of the support;
the baffle ring is horizontally and fixedly arranged in the valve body and sleeved on the valve cover;
an accommodating cavity for accommodating the sealing ring is arranged among the baffle ring, the valve body and the side wall of the valve cover;
when the nut is rotated, the valve cover moves upwards, the space of the accommodating cavity is reduced, and the sealing ring is extruded.
2. The pre-tightening bonnet sealing structure for the nut as claimed in claim 1, wherein the baffle ring is a four-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222395198.0U CN217927110U (en) | 2022-09-06 | 2022-09-06 | Pre-tightening valve cover sealing structure for nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222395198.0U CN217927110U (en) | 2022-09-06 | 2022-09-06 | Pre-tightening valve cover sealing structure for nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217927110U true CN217927110U (en) | 2022-11-29 |
Family
ID=84174160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222395198.0U Active CN217927110U (en) | 2022-09-06 | 2022-09-06 | Pre-tightening valve cover sealing structure for nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217927110U (en) |
-
2022
- 2022-09-06 CN CN202222395198.0U patent/CN217927110U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |