CN204387482U - A kind of Pneumatic choke valve core of anti-gas-leak - Google Patents
A kind of Pneumatic choke valve core of anti-gas-leak Download PDFInfo
- Publication number
- CN204387482U CN204387482U CN201420836998.4U CN201420836998U CN204387482U CN 204387482 U CN204387482 U CN 204387482U CN 201420836998 U CN201420836998 U CN 201420836998U CN 204387482 U CN204387482 U CN 204387482U
- Authority
- CN
- China
- Prior art keywords
- spool
- main body
- gas
- valve core
- seal boss
- Prior art date
- 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 relates to pneumatic components and parts technical field, particularly relate to a kind of Pneumatic choke valve core of anti-gas-leak, comprise spool main body, valve rod hole is offered in the middle part of described spool main body, described valve rod hole becomes stepped ramp type to divide three sections, described spool body top outside is provided with seal ring draw-in groove, described spool lower body part outside is provided with unidirectional circle draw-in groove, described spool bottom part body is provided with seal boss, the utility model is rational in infrastructure, by establishing trapezoidal seal boss in spool bottom part body, increase the area of contact with valve body bottom spool, thus reach better sealing effect, prevent gas leakage.
Description
Technical field
The utility model relates to pneumatic components and parts technical field, particularly relates to a kind of Pneumatic choke valve core of anti-gas-leak.
Background technique
The structure of Pneumatic pipe valve comprises the component such as valve pocket, spool, valve rod, zinc grip assembly, tracheae button, wherein topmost two component are valve rod and spool, the braking of Pneumatic pipe valve killing and having unclamped mainly by valve rod and spool, but valve core structure common at present, throughput be adjusted to minimum in, there will be sealing not, the situation of gas leakage occurs, there is many potential impacts.
Model utility content
The purpose of this utility model is the Pneumatic choke valve core providing a kind of anti-gas-leak, and it has good sealing effect, prevents the feature of gas leakage.
For achieving the above object, the utility model adopts following technical proposals:
A kind of Pneumatic choke valve core of anti-gas-leak, comprise spool main body, valve rod hole is offered in the middle part of described spool main body, described valve rod hole becomes stepped ramp type to divide three sections, described spool body top outside is provided with seal ring draw-in groove, described spool lower body part outside is provided with unidirectional circle draw-in groove, and described spool bottom part body is provided with seal boss.
Wherein, the external diameter of described seal boss is greater than the external diameter of spool bottom part body.
Wherein, described seal boss is trapezoidal.
Wherein, described seal boss and spool main body are formed in one structure.
The utility model beneficial effect: the utility model comprises spool main body, valve rod hole is offered in the middle part of described spool main body, described valve rod hole becomes stepped ramp type to divide three sections, described spool body top outside is provided with seal ring draw-in groove, described spool lower body part outside is provided with unidirectional circle draw-in groove, described spool bottom part body is provided with seal boss, the utility model is rational in infrastructure, by establishing trapezoidal seal boss in spool bottom part body, increase the area of contact with valve body bottom spool, thus reach better sealing effect, prevent gas leakage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
reference character
1, spool main body; 2, valve rod hole;
3, seal ring draw-in groove; 4, unidirectional circle draw-in groove;
5, seal boss.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, a kind of Pneumatic choke valve core of anti-gas-leak, comprise spool main body 1, valve rod hole 2 is offered in the middle part of described spool main body 1, described valve rod hole 2 one-tenth stepped ramp type divides three sections, described spool main body 1 upper external is provided with seal ring draw-in groove 3, described spool main body 1 lower external is provided with unidirectional circle draw-in groove 4, seal boss 5 is provided with bottom described spool main body 1, described seal boss 5 is trapezoidal, described seal boss 5 also can be set to taper, frustoconic shape, by establishing trapezoidal seal boss 5 bottom spool main body 1, increase the area of contact with valve body bottom spool, thus reach better sealing effect, prevent gas leakage.
In the present embodiment, the external diameter of described seal boss 5 is greater than the external diameter bottom spool main body 1, and the external diameter of described seal boss 5 is the bigger the better, thus has larger surface of contact, reaches better sealing effect, specifically carrys out optimal selection according to actual conditions.
In the present embodiment, described seal boss 5 and spool main body 1 are formed in one structure, described seal boss 5 also can be set to spool main body 1 and be spirally connected or snap fit, ensures the smooth of seal boss 5 sealed bottom face, and specifically or seal request convenient according to assembling in reality carrys out choose reasonable.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (4)
1. the Pneumatic choke valve core of an anti-gas-leak, comprise spool main body, it is characterized in that: in the middle part of described spool main body, offer valve rod hole, described valve rod hole becomes stepped ramp type to divide three sections, described spool body top outside is provided with seal ring draw-in groove, described spool lower body part outside is provided with unidirectional circle draw-in groove, and described spool bottom part body is provided with seal boss.
2. the Pneumatic choke valve core of a kind of anti-gas-leak according to claim 1, is characterized in that: the external diameter of described seal boss is greater than the external diameter of spool bottom part body.
3. the Pneumatic choke valve core of a kind of anti-gas-leak according to claim 1, is characterized in that: described seal boss is trapezoidal.
4. the Pneumatic choke valve core of a kind of anti-gas-leak according to claim 1, is characterized in that: described seal boss and spool main body are formed in one structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420836998.4U CN204387482U (en) | 2014-12-26 | 2014-12-26 | A kind of Pneumatic choke valve core of anti-gas-leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420836998.4U CN204387482U (en) | 2014-12-26 | 2014-12-26 | A kind of Pneumatic choke valve core of anti-gas-leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204387482U true CN204387482U (en) | 2015-06-10 |
Family
ID=53360202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420836998.4U Expired - Fee Related CN204387482U (en) | 2014-12-26 | 2014-12-26 | A kind of Pneumatic choke valve core of anti-gas-leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204387482U (en) |
-
2014
- 2014-12-26 CN CN201420836998.4U patent/CN204387482U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20211226 |