CN204533671U - Integral safety pressure release Non-return gate valve - Google Patents
Integral safety pressure release Non-return gate valve Download PDFInfo
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- CN204533671U CN204533671U CN201520102584.3U CN201520102584U CN204533671U CN 204533671 U CN204533671 U CN 204533671U CN 201520102584 U CN201520102584 U CN 201520102584U CN 204533671 U CN204533671 U CN 204533671U
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- valve
- pressure release
- water
- return
- pressure
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Abstract
The utility model discloses a kind of integral safety pressure release Non-return gate valve, comprise switch valve, check valve body (2) is provided with at the feed-water end of described switch valve, non-return valve core (3) is provided with in described check valve body (2), in described non-return valve core (3), be provided with pressure release passage (5), in described pressure release passage (5), be provided with pressure releasing valve core (1).Described switch valve is ball valve, gate valve (1) or stop valve.The utility model a kind ofly can prevent aqueous reflux and water clock from can protect downstream water demand equipment again and structure is simple, easily manufactured, the integral safety pressure release Non-return gate valve of reliable performance.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of integral safety pressure release Non-return gate valve.
Background technique
Tap water is not 6L/h per hour by the single water clock general speed of water meter measurement, and the single water tap water clock of 24 hours can reach 150L, annualized, can reach more than 50 ton.For all kinds of pipe valve, tap, gondola water faucet and water meter, because water meter starts leakage loss and economic loss that insensitive, the abnormal water of a few users brings as put thread, drip etc.Meanwhile, the metering dispute that the water meter rotation caused because of air in pipeline and hydraulic pressure instability or reversion cause is the difficult problem that annoying water supply department for a long time.And for often to open, due to the fluctuation of hydraulic pressure, often there is hot and cold water crossfire, bring inconvenience to life, cause water body cross pollution in the valve of hot and cold water in thermostatic control system.There is a kind of Multifunctional anti-drip non-return combined valve at present, check valve body is provided with at the feed-water end of switch valve, conical shape check valve seat and spool supporting frame is provided with in check valve body, spool supporting frame is provided with the conical shape check valve core corresponding with conical shape check valve seat, return spring is provided with between conical shape check valve core and described spool supporting frame, the problem preventing aqueous reflux and water clock can be solved well, but when downstream water pressure is greater than upstream hydraulic pressure, check valve body can not allow current pass through, and likely damages upstream device.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of integral safety pressure release Non-return gate valve that can prevent aqueous reflux and water clock from can protect again downstream water demand equipment.
In order to solve the problems of the technologies described above, the integral safety pressure release Non-return gate valve that the utility model provides, comprise switch valve, check valve body is provided with at the feed-water end of described switch valve, non-return valve core is provided with in described check valve body, in described non-return valve core, be provided with pressure release passage, in described pressure release passage, be provided with pressure releasing valve core.
Described switch valve is ball valve, gate valve or stop valve.
Adopt the integral safety pressure release Non-return gate valve of technique scheme, opening switch valve, when current from feed-water end enter and hydraulic pressure is greater than the elastic force of return spring time, water jet propulsion non-return valve core is moved to the left and makes one-way valve opens, otherwise when hydraulic pressure is less than the elastic force of return spring, non-return valve core moves right under the effect of return spring, make closed check valve, small water flow not by; When the water yield is less than the metering pressure of water meter, one-way valve can not be opened, thus reaches leakage-proof and the object preventing from flowing backwards.But when downstream water pressure is greater than upstream hydraulic pressure, water pushes pressure releasing valve core open from pressure release passage, allow water flow to upstream from downstream and pass through, can not damage upstream device.
In sum, the utility model a kind ofly can prevent aqueous reflux and water clock from can protect downstream water demand equipment again and structure is simple, easily manufactured, the integral safety pressure release Non-return gate valve of reliable performance.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is structural blast figure of the present utility model.
Fig. 3 is the working state schematic representation of water of the present utility model.
Fig. 4 is backflow working state schematic representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
See Fig. 1 and Fig. 2, switch valve is ball valve, gate valve 1 or stop valve.The utility model adopts gate valve 1, is provided with check valve body 2, is provided with non-return valve core 3 in check valve body 2, be provided with pressure release passage 5 in non-return valve core 3, be provided with pressure releasing valve core 1 in pressure release passage 5 at the feed-water end of gate valve 1.
See Fig. 1, Fig. 2 and Fig. 3, open gate valve 4, when current from gate valve 4 feed-water end enter and hydraulic pressure is greater than the elastic force of the return spring of non-return valve core 3 time, water jet propulsion non-return valve core 3 is moved to the left and check valve body 2 is opened, otherwise, see Fig. 4, when hydraulic pressure is less than the elastic force of the return spring of non-return valve core 3, non-return valve core 3 moves right under the effect of return spring, and check valve body 2 is closed; When the water yield is less than the metering pressure of water meter, check valve body 2 can not be opened, like this, small water flow not by thus reach leakage-proof and prevent flow backwards object.
But when the pressure difference of downstream water pressure ratio upstream hydraulic pressure; when reaching the pressure difference of pressure releasing valve core 1 setting; water pushes pressure releasing valve core 1 open from pressure release passage 5; allow water push pressure releasing valve core 1 from downstream open through pressure release passage 5 flow to upstream and pass through pressure release; to protect watering equipment and the pipeline of downstream user end, the damage of upstream device can not be caused because of overpressure.
Technical parameter
Inside nominal diameter: DN25
Working pressure: PN16
Operating temperature :-20 °≤t≤110 °
Pressure release pressure difference: >=0.8MPa≤1.3MPa
Working medium: water, non-corrosive liquid
Pipe thread meets ISO 228 standard
Pressure difference: refer to that the pressure reduction that downstream hydraulic pressure deducts upstream hydraulic pressure is called pressure difference
Example: set pressure difference as >=0.8MPa≤1.3MPa, when upstream hydraulic pressure is 0.4Mpa, so pressure of downstream hydraulic pressure need >=1.2MPa≤1.7MPa, pressure releasing valve core could work.
Above-mentioned gate valve 4 can also replace with ball valve or stop valve.The utility model is widely used in all kinds of pipe valve, tap, gondola water faucet and water meter.Be used in thermostatic control system and can prevent hot and cold water crossfire, service conduit internal water pressure balances, anti-water-stop body cross pollution.Reduce because water meter starts the leakage loss and economic loss that insensitive, the abnormal water of a few users brings as put thread, drip etc.Meanwhile, the metering dispute effectively avoiding the water meter rotation because air in pipeline and hydraulic pressure instability cause or reversion to cause, solves the difficult problem that these long-standing problem water supply department preferably.When the pressure difference of downstream water pressure ratio upstream hydraulic pressure reaches the pressure difference of pressure releasing valve core 1 setting; water pushes pressure releasing valve core 1 open from pressure release passage 5; allow water push pressure releasing valve core 1 from downstream open through pressure release passage 5 flow to upstream and pass through pressure release; to protect watering equipment and the pipeline of downstream user end, the damage of upstream device can not be caused because of overpressure.
Claims (2)
1. an integral safety pressure release Non-return gate valve, comprise switch valve, check valve body (2) is provided with at the feed-water end of described switch valve, non-return valve core (3) is provided with in described check valve body (2), it is characterized in that: in described non-return valve core (3), be provided with pressure release passage (5), in described pressure release passage (5), be provided with pressure releasing valve core (1).
2. integral safety pressure release Non-return gate valve according to claim 1, is characterized in that: described switch valve is ball valve, gate valve (1) or stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102584.3U CN204533671U (en) | 2015-02-12 | 2015-02-12 | Integral safety pressure release Non-return gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102584.3U CN204533671U (en) | 2015-02-12 | 2015-02-12 | Integral safety pressure release Non-return gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533671U true CN204533671U (en) | 2015-08-05 |
Family
ID=53747679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520102584.3U Active CN204533671U (en) | 2015-02-12 | 2015-02-12 | Integral safety pressure release Non-return gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533671U (en) |
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2015
- 2015-02-12 CN CN201520102584.3U patent/CN204533671U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |