CN203516770U - Novel stop valve - Google Patents
Novel stop valve Download PDFInfo
- Publication number
- CN203516770U CN203516770U CN201320572729.7U CN201320572729U CN203516770U CN 203516770 U CN203516770 U CN 203516770U CN 201320572729 U CN201320572729 U CN 201320572729U CN 203516770 U CN203516770 U CN 203516770U
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- China
- Prior art keywords
- valve rod
- sealing
- valve
- seal
- passage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a novel stop valve which comprises a valve body, a valve rod, an operating mechanism, a valve element, a sealing mechanism and a plurality of sealing pieces. The valve body is provided with a medium channel, a valve rod installation channel and a valve element installation position, the valve rod is installed in the valve rod installation channel, the operating mechanism is installed at the upper end of the valve rod, the valve element is installed at the lower end of the valve rod, the sealing mechanism is arranged on the side wall of the valve rod installation channel and comprises a step-type sealing groove formed in the inner wall of the valve rod installation channel, the sealing pieces are installed in the sealing groove, each sealing piece is formed by at least two sealing rings in an overlapped mode, the lower end face of each sealing ring is provided with an annular groove to divide the sealing ring into an inner lip and an outer lip, and the sealing pieces are installed between the valve rod installation channel and the valve rod through check rings. Due to the fact that the annular grooves are formed in the sealing rings of the sealing pieces, individual loads of the sealing rings are accordingly reduced, the service life of the sealing rings is prolonged, and the sealing performance of the stop valve is greatly improved; external media are prevented from entering the valve body from the position of the valve rod installation channel, meanwhile, media inside the valve body are prevented from being leaked out, and the bidirectional sealing effect is achieved.
Description
Technical field
The utility model relates to a kind of valve technology field, especially relates to a kind of novel cutoff valve.
Background technique
Stop valve is had relatively high expectations for the sealing configuration between valve rod and valve body, and traditional seal ring class sealing configuration is easily distortion in long-time using process, and constantly decline of sealability, until seal failure.
Model utility content
The purpose of this utility model is exactly in order to address the above problem, and the novel cutoff valve of a kind of good seal performance, long service life is provided.
To achieve these goals, the utility model adopts following technological scheme:
A novel cutoff valve, it has:
Containing the valve body of medium runner, it has the spool installation position that a valve rod is installed passage and is arranged in medium runner;
Be installed on valve rod the valve rod of passage is installed;
Be installed on the spool of valve rod lower end;
Be installed on the operating device of valve rod upper end;
It is characterized in that, the sidewall that passage is installed at valve rod has sealing mechanism, and sealing mechanism comprises:
Be located at valve rod the step-like seal groove of vias inner walls is installed;
Be installed on many groups Sealing of seal groove, the seal forms by least two seal rings are overlapping, and the lower end surface of each seal ring is divided into epipharynx and outer lip by a circular groove is set by seal ring both sides;
Described Sealing is installed on valve rod by back-up ring and installs between passage and valve rod.
Further, the circular groove cross section of described seal ring is trapezoidal/square/triangle/circle.
Further, the material of described seal ring is that fluorine rubber material is made.
Further, in described circular groove, Returnning spring is installed.
Compared with prior art, the utlity model has following beneficial effect: organize the seal ring of Sealing owing to being provided with circular groove more, thereby reduce the independent load of seal ring, extend the life-span of seal ring, greatly improve the sealability of stop valve.When making valve rod installation passage place avoid external agency to enter valve body, prevent that on the other hand the medium of valve inner from spilling, play two way sealed effect.
Accompanying drawing explanation
Fig. 1 is a kind of novel cutoff valve structural representation.
Fig. 2 is I place detail drawing in Fig. 1.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1 and Figure 2, a kind of novel cutoff valve, it has: containing the valve body 1 of medium runner, it has the spool installation position that a valve rod is installed passage and is arranged in medium runner; Be installed on valve rod the valve rod 2 of passage is installed; Be installed on the spool of valve rod lower end; Be installed on the operating device 3 of valve rod upper end; The sidewall that passage is installed at valve rod has sealing mechanism, sealing mechanism comprises: be located at the step-like seal groove that valve rod is installed vias inner walls, select the top of valve rod being installed to passage to flow out an annular boss structure here, and the valve rod of this annular boss structure bottom is installed passage and formed a space that can hold for Sealing, by former valve rod and gap between valve rod installation vias inner walls, be only what to be difficult to hold compared with the seal ring of macrostructure; Be installed on three groups of Sealings 4 of seal groove, the seal is by overlapping the forming of three seal rings (being made by fluorine rubber material), and the lower end surface of each seal ring is divided into epipharynx 6 and outer lip 7 by a circular groove 5 is set by seal ring both sides; Described Sealing is installed on valve rod by back-up ring 9 and installs between passage and valve rod, each organizes Sealing not when annular boss structure contacts, the upper and lower end of Sealing all needs to install back-up ring, iff two groups of Sealing lower ends near spool in as figure, back-up ring is set, it in stability, is acceptable, therefore, back-up ring can be arranged in separately Sealing lower end, can also arrange at Sealing upper and lower end simultaneously.
The circular groove cross section of described seal ring includes but not limited to trapezoidal/square/triangle/circle, and if no special instructions, in full text, "/" represents the implication of "or".
Consider epipharynx, outer lip in long-term using process easily because external compression produces deformation, Returnning spring (not shown) is installed in described circular groove can be contacted epipharynx 6 and valve rod are airtight, meanwhile, outer lip is also installed airtight contact of sidewall of passage with valve rod, both complete effective sealing configuration jointly.
The foregoing is only preferred implementation of the present utility model, protection domain of the present utility model is not limited in above-mentioned mode of execution, and every technological scheme that belongs to the utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art, some improvement of carrying out under the prerequisite that does not depart from principle of the present utility model, these improvement also should be considered as protection domain of the present utility model.
Claims (4)
1. a novel cutoff valve, it has: containing the valve body of medium runner, it has the spool installation position that a valve rod is installed passage and is arranged in medium runner; Be installed on valve rod the valve rod of passage is installed; Be installed on the spool of valve rod lower end; Be installed on the operating device of valve rod upper end; It is characterized in that, the sidewall that passage is installed at valve rod has sealing mechanism, and sealing mechanism comprises: be located at the step-like seal groove that valve rod is installed vias inner walls; Be installed on many groups Sealing of seal groove, the seal forms by least two seal rings are overlapping, and the lower end surface of each seal ring is divided into epipharynx and outer lip by a circular groove is set by seal ring both sides; Described Sealing is installed on valve rod by back-up ring and installs between passage and valve rod.
2. a kind of novel cutoff valve according to claim 1, is characterized in that, the circular groove cross section of described seal ring is trapezoidal/square/triangle/circle.
3. a kind of novel cutoff valve according to claim 1, is characterized in that, the material of described seal ring is that fluorine rubber material is made.
4. a kind of novel cutoff valve according to claim 1, is characterized in that, in described circular groove, Returnning spring is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572729.7U CN203516770U (en) | 2013-09-17 | 2013-09-17 | Novel stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572729.7U CN203516770U (en) | 2013-09-17 | 2013-09-17 | Novel stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516770U true CN203516770U (en) | 2014-04-02 |
Family
ID=50375702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320572729.7U Expired - Fee Related CN203516770U (en) | 2013-09-17 | 2013-09-17 | Novel stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516770U (en) |
-
2013
- 2013-09-17 CN CN201320572729.7U patent/CN203516770U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20140917 |
|
| EXPY | Termination of patent right or utility model |