CN202220866U - Air valve used for fire hydrant - Google Patents
Air valve used for fire hydrant Download PDFInfo
- Publication number
- CN202220866U CN202220866U CN2011202927080U CN201120292708U CN202220866U CN 202220866 U CN202220866 U CN 202220866U CN 2011202927080 U CN2011202927080 U CN 2011202927080U CN 201120292708 U CN201120292708 U CN 201120292708U CN 202220866 U CN202220866 U CN 202220866U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- valve body
- valve
- hydrant
- fire hydrant
- 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
An air valve used for a fire hydrant comprises a valve body. A steel ball is disposed in an inner cavity of the valve body, an air hole is arranged at the upper end of the valve body, and a rubber sealing ring matched with the steel ball is disposed at the position of an inner port of the air hole. The circumference of the sealing ring is contacted with that of the steel ball. During installation, the valve body is fixedly connected on a plug of the fire hydrant, a welding connection mode or an adhesive bonding connection mode or a threaded connection mode can be adopted, and an inner cavity of a hydrant body is led to be communicated with the outside through the inner cavity of the valve body and the air hole. When the air valve is used, due to the fact that water pressure exists in the hydrant body, the steel ball can block off the air hole and be sealed by the sealing ring, and the fire hydrant works normally. After the air valve is used, a water inlet valve is closed, the pressure in the inner cavity of the hydrant body is reduced, the steel ball leaves the sealing ring, the inner cavity of the hydrant body is led to be communicated with the outside, and gathered water in the hydrant body can be drained smoothly so that sealing effect of the sealing ring is improved and the circumstance of damage caused by contact of the steel ball and the valve body is avoided.
Description
Technical field
The utility model relates to a kind of air valve, particularly a kind of air valve that is used for fire hydrant.
Background technique
Fire hydrant comprises the key that joins with intake pipe and outlet pipe, on key, is provided with stifle.Use back key inner chamber to have ponding, because each valve of water pipe all is in closed condition, therefore, inboard water can't be discharged, and particularly bursting by freezing fire hydrant phenomenon often takes place north of china in winter.
Summary of the invention
The purpose of the utility model provides a kind of air valve that is used for fire hydrant that makes fire hydrant inner chamber water discharge, prevent the bursting by freezing in winter smoothly, overcomes the deficiency of existing technology.
The air valve that is used for fire hydrant of the utility model comprises valve body, and the inner chamber of valve body has steel ball, in the upper end of valve body pore is arranged, and the inner port place of pore is provided with the rubber seal that matches with steel ball.
The air valve that is used for fire hydrant of the utility model, wherein said seal ring is that circumference contacts with steel ball.
The air valve that is used for fire hydrant of the utility model is fixedly connected on valve body on the stifle of fire hydrant during installation, can adopt welding or bonding or thread connecting mode, and the key inner chamber is in communication with the outside through body cavity and pore; During use, owing in the key hydraulic pressure is arranged, but steel ball shutoff pore and seal by seal ring; The fire hydrant proper functioning, after using, inlet valve is closed; The key chamber pressure reduces, and steel ball leaves seal ring, and the key inner chamber is in communication with the outside; Ponding in the key can be discharged smoothly, and the effect of seal ring has not only improved sealing effect, and has prevented that steel ball from contacting with valve body and the degree of impairment generation occurs.
Description of drawings
Fig. 1 is the structural representation when steel ball leaves pore in the utility model embodiment;
Fig. 2 is the structural representation during steel ball shutoff pore in the utility model embodiment.
Embodiment
Like Fig. 1, shown in 2: 1 is valve body cylindraceous, and the inner chamber of valve body 1 has steel ball 2, and circular pore 3 is arranged in the upper end of valve body 1, and the inner port place of pore 3 is provided with the rubber seal 4 that matches with steel ball 2.Seal ring 4 and valve are bonding between 1 originally, or on valve body 1, are processed with groove, and seal ring embeds in the groove.Seal ring 4 contacts for circumference with steel ball 2.
Claims (2)
1. air valve that is used for fire hydrant; It is characterized in that: comprise valve body (1); The inner chamber of valve body (1) has steel ball (2), in the upper end of valve body (1) pore (3) is arranged, and the inner port place of pore (3) is provided with the rubber seal (4) that matches with steel ball (2).
2. the air valve that is used for fire hydrant according to claim 1 is characterized in that: described seal ring (4) contacts for circumference with steel ball (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202927080U CN202220866U (en) | 2011-08-12 | 2011-08-12 | Air valve used for fire hydrant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202927080U CN202220866U (en) | 2011-08-12 | 2011-08-12 | Air valve used for fire hydrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220866U true CN202220866U (en) | 2012-05-16 |
Family
ID=46042893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202927080U Expired - Fee Related CN202220866U (en) | 2011-08-12 | 2011-08-12 | Air valve used for fire hydrant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220866U (en) |
-
2011
- 2011-08-12 CN CN2011202927080U patent/CN202220866U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20120812 |