CN203906921U - Air suction valve - Google Patents
Air suction valve Download PDFInfo
- Publication number
- CN203906921U CN203906921U CN201420363235.2U CN201420363235U CN203906921U CN 203906921 U CN203906921 U CN 203906921U CN 201420363235 U CN201420363235 U CN 201420363235U CN 203906921 U CN203906921 U CN 203906921U
- Authority
- CN
- China
- Prior art keywords
- piston
- unloader
- control piston
- valve body
- valve
- 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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- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses an air suction valve, which comprises a valve body, wherein a protective cover is arranged below the valve body, an unloader piston is arranged above the valve body, a spring is arranged inside the unloader piston, a first control piston is arranged on the unloader piston, a second control piston is arranged on the outer side of the unloader piston, a clearance is left between the second control piston and the unloader piston, and a valve cap is arranged on the first control valve and the second control valve. Washers are arranged between the valve body and the protective cover. A first O-shaped ring is arranged on the lower edge of the valve cap. The upper end of the first control piston is sheathed with a second O-shaped ring. The position at which the first control piston and the unloader piston are connected with each other is sheathed with a ring. The air suction valve can prevent the difference between internal pressure and external pressure from influencing a pipeline, so as to effectively prevent the flattening or damage of the pipeline, thus being convenient to use.
Description
Technical field
The utility model relates to a kind of water delivery valve, particularly a kind of Aspirating valves.
Background technique
In the ordinary course of things, contain a certain amount of dissolved air in water, in water delivery process, these air constantly discharge in water, and the height point place that is gathered in pipeline forms air bag, make water delivery become difficult, and emptying effectiveness declines; Therefore, people have invented a kind of micro-exhaust valve for getting rid of this part dissolved air, make to carry unimpeded.But in water delivery process, also there is a problem, in water delivery process for various reasons, in pipeline, easily form negative pressure, and under the atmospheric effect in the external world, pipeline easily forms sunken, even damaged, and such problem produces and is unfavorable for equally water delivery, therefore and existing micro-exhaust valve can not address this problem, be necessary to invent the valve of this technical problem of a kind of can solution " because the negative pressure producing in water delivery process causes the pipeline sunken ".
Model utility content
The problem existing for prior art, the purpose of this utility model is to provide a kind of can effectively prevent that the negative pressure because producing in water delivery process from causing the sunken Aspirating valves of pipeline.
In order to achieve the above object, the utility model is by the following technical solutions: a kind of Aspirating valves, comprise valve body, described valve body below is provided with protective housing, described valve body top is provided with unloader piston, described unloader internal piston is provided with spring, described unloader piston is provided with the first control piston, described unloader piston outside is provided with the second control piston, between the second described control piston and unloader piston, leave gap, the first described control piston and be provided with valve gap above the second control piston.Between described valve body and protective housing, be provided with pad.The lower limb of described valve gap is provided with an O type circle.The first described control piston upper end cover has the 2nd O type circle.The first described control piston and unloader piston joint cover have annulus.
Adopt after technique scheme, the utlity model has following beneficial effect: the utility model and prevent that inside and outside differential pressure from exerting an influence to pipeline, effectively prevent that pipeline is sunken or damage, and easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, protective housing 2, valve body 3, unloader piston 4, the first control piston 5, spring 6, the second control piston 7, an O type circle 8, valve gap 9, pad 10, the 2nd O type circle 11, annulus.
Embodiment
According to Figure of description and specific embodiment, the utility model is further explained below.
As shown in Figure 1, a kind of Aspirating valves, comprise valve body 2, described valve body 2 belows are provided with protective housing 1, and described valve body 2 tops are provided with unloader piston 3, and described unloader piston 3 inside are provided with spring 5, described unloader piston 3 is provided with the first control piston 4, described unloader piston 3 outsides are provided with the second control piston 6, between the second described control piston 6 and unloader piston 3, leave gap, and the first described control piston 4 and the second control piston 6 are provided with valve gap 8 above.Between described valve body 2 and protective housing 1, be provided with pad 9.The lower limb of described valve gap 8 is provided with an O type circle 7.The first described control piston 4 upper end covers have the 2nd O type circle 10.The first described control piston 4 has annulus 11 with unloader piston 3 joint covers.
Claims (5)
1. an Aspirating valves, comprise valve body, it is characterized in that described valve body below is provided with protective housing, described valve body top is provided with unloader piston, described unloader internal piston is provided with spring, and described unloader piston is provided with the first control piston, and described unloader piston outside is provided with the second control piston, between the second described control piston and unloader piston, leave gap, the first described control piston and be provided with valve gap above the second control piston.
2. a kind of Aspirating valves according to claim 1, is characterized in that being provided with pad between described valve body and protective housing.
3. a kind of Aspirating valves according to claim 1, is characterized in that the lower limb of described valve gap is provided with an O type circle.
4. a kind of Aspirating valves according to claim 1, is characterized in that the first described control piston upper end cover has the 2nd O type circle.
5. a kind of Aspirating valves according to claim 1, is characterized in that the first described control piston and unloader piston joint cover have annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363235.2U CN203906921U (en) | 2014-07-02 | 2014-07-02 | Air suction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363235.2U CN203906921U (en) | 2014-07-02 | 2014-07-02 | Air suction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906921U true CN203906921U (en) | 2014-10-29 |
Family
ID=51781201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420363235.2U Expired - Fee Related CN203906921U (en) | 2014-07-02 | 2014-07-02 | Air suction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906921U (en) |
-
2014
- 2014-07-02 CN CN201420363235.2U patent/CN203906921U/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: 20141029 Termination date: 20160702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |