CN210949886U - Valve element control structure of manual stop valve - Google Patents
Valve element control structure of manual stop valve Download PDFInfo
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- CN210949886U CN210949886U CN201921741015.8U CN201921741015U CN210949886U CN 210949886 U CN210949886 U CN 210949886U CN 201921741015 U CN201921741015 U CN 201921741015U CN 210949886 U CN210949886 U CN 210949886U
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- valve
- valve rod
- lid
- control structure
- cover body
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Abstract
The utility model relates to a manual stop valve case control structure, including valve body, case, valve rod and lid, the top of case be provided with the cap body, the top of valve body installation case be provided with the step, the cover is equipped with the spring on the case, the spring is located between the cap body and the step, the lid top is provided with the opening that supplies the valve rod to stretch out, the bottom complete opening of lid, the lower part and the lid of valve rod inside through threaded connection, the bottom and the valve body upper portion threaded connection of lid, be provided with the sealing washer mounting groove on the valve rod, inside is provided with the sealing washer. The utility model discloses simple structure, low in production cost, reliable and stable.
Description
Technical Field
The invention relates to a manual stop valve, in particular to a valve core control structure.
Background
The manual cut-off valve is a common air passage control element and the working principle is shown in figure 1. The valve body a is provided with a channel b, and the valve core c can move up and down to open (left in figure 1) or close (right in figure 1) the channel b. The valve core is usually controlled by a valve rod d, the valve rod d is connected with a valve core c, the valve rod d is provided with an external thread, the valve rod d drives the valve core c to move up and down when being matched with a cavity of the valve body a, the structure of the valve rod d is as shown in figure 2, and a T-shaped groove e is milled at the external thread of the valve rod d to hang the valve core c to move up and down.
Such a valve stem d has the following drawbacks: milling a T-slot increases the process cost; the integrity of the external thread is damaged by the milled T-shaped groove, so that the strength of the valve rod is reduced; the milled T-shaped groove enables the external thread to have a sharp angle, and extremely small metal fine scraps can fall off after the T-shaped groove is screwed with the internal thread for a long time, so that the internal thread and the external thread are seized, and a kinematic pair fails; when the symmetry degree of the central plane of the milled T-shaped groove and the axis of the external thread has a large error, the valve rod does not move smoothly up and down after assembly, the valve core is not locked tightly, and the air leakage phenomenon is caused, namely the requirement on the processing precision is high.
Disclosure of Invention
The invention aims to improve and innovate the defects and problems in the background art and provides a valve core control structure of a manual stop valve, which has simple structure, low production cost, stability and reliability.
The technical scheme includes that the valve core control structure of the manual stop valve comprises a valve body, a valve core, a valve rod and a cover body, wherein a cap body is arranged at the top of the valve core, a step is arranged at the top of the valve body for installing the valve core, a spring is sleeved on the valve core and positioned between the cap body and the step, an opening for extending the valve rod is formed in the top of the cover body, the bottom of the cover body is completely opened, the lower portion of the valve rod is connected with the inside of the cover body through threads, the bottom of the cover body is connected with the upper portion of the valve body through threads, a sealing ring installation groove is formed in the.
In one embodiment, the top of the cap body is an arc surface, and the center of the cap body is highest.
The invention has the advantages and beneficial effects that:
1. the external thread of the valve rod of the invention is not processed with T-shaped groove, the former 4 defects are not existed, the structure is simple, and the cost is low.
2. The valve core is not pulled back by the T-shaped groove when moving upwards but by the elasticity of the spring, so that the valve is stable and reliable.
Drawings
Fig. 1 is a schematic diagram comparing two states of use of a prior art manual shut-off valve, in which the arrows indicate the fluid flow direction.
Fig. 2 is a schematic view of a conventional valve stem.
Fig. 3 is a schematic structural diagram of the embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed" on another element, it can be directly disposed or attached to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 3, a manual stop valve spool control structure includes a valve body 1, a valve spool 2, a valve rod 3 and a cover body 4, the top of the valve spool 2 is provided with a cap body 5, the top of the valve body 1, on which the valve spool 2 is mounted, is provided with a step 6, the valve spool 2 is sleeved with a spring 7, the spring 7 is located between the cap body 5 and the step 6, the top of the cover body 4 is provided with an opening through which the valve rod 3 extends, the bottom of the cover body 4 is completely opened, the lower part of the valve rod 3 is connected with the inside of the cover body 4 through a thread, the bottom of the cover body 4 is connected with the upper part of the valve body 1 through a thread, the valve rod 3.
Preferably, the top of the cap body 5 is an arc surface, and the center is highest.
The working principle of the invention is as follows: when the valve rod is used, the valve rod is rotated, and can move up and down under the matching of the threads. When the valve rod moves downwards, the bottom of the valve rod extrudes the cap body to press the valve core downwards, and meanwhile, the spring is compressed until the channel is cut off; when the valve rod moves upwards, the cap body moves upwards along with the bottom of the valve rod under the action of the spring to open the channel.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (2)
1. The utility model provides a manual stop valve case control structure which characterized in that: the valve comprises a valve body, a valve core, a valve rod and a cover body, wherein a cap body is arranged at the top of the valve core, steps are arranged at the top of the valve body for installing the valve core, a spring is sleeved on the valve core and is positioned between the cap body and the steps, an opening for the valve rod to extend out is formed in the top of the cover body, the bottom of the cover body is completely opened, the lower portion of the valve rod is connected with the inside of the cover body through threads, the bottom of the cover body is connected with the upper portion of the valve body through threads, a sealing ring installation groove.
2. The manual shutoff valve spool control structure of claim 1, wherein: the top of the cap body is an arc surface, and the center of the cap body is highest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921741015.8U CN210949886U (en) | 2019-10-16 | 2019-10-16 | Valve element control structure of manual stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921741015.8U CN210949886U (en) | 2019-10-16 | 2019-10-16 | Valve element control structure of manual stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949886U true CN210949886U (en) | 2020-07-07 |
Family
ID=71391543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921741015.8U Active CN210949886U (en) | 2019-10-16 | 2019-10-16 | Valve element control structure of manual stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949886U (en) |
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2019
- 2019-10-16 CN CN201921741015.8U patent/CN210949886U/en active Active
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| GR01 | Patent grant |