CN104315205A - Leakproof backflow-preventing valve - Google Patents
Leakproof backflow-preventing valve Download PDFInfo
- Publication number
- CN104315205A CN104315205A CN201410570765.9A CN201410570765A CN104315205A CN 104315205 A CN104315205 A CN 104315205A CN 201410570765 A CN201410570765 A CN 201410570765A CN 104315205 A CN104315205 A CN 104315205A
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- China
- Prior art keywords
- valve
- proof
- leakage
- sealing
- plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention provides a leakproof backflow-preventing valve. The leakproof backflow-preventing valve comprises a valve body, a water outlet or inlet of the valve body is provided with a leakproof check valve, the leakproof check valve comprises a valve plate, a resetting device and a valve seat, the valve seat is fixed in a pipeline of the valve body, the outer side of the valve plate is connected with the valve seat via the resetting device, the inner side of the valve plate is a sealed surface, a sealing mat is arranged on the sealed surface, semicircular projections in a circle are arranged at the edges of the sealing mat, a sealing plate is arranged in the valve body and is a circular projection inside the valve body and can contact with the sealed surface of the valve plate, a water flow passage is sealed, the outer side of the sealing plate is provided with an annular baffle, and the inner wall of the annular baffle is provided with a groove. The leakproof backflow-preventing valve has the advantages that pressure water in the pipeline can be strictly limited to flow in one way, backflow of the water is effectively prevented, and running and leaking of the downstream pipeline can be prevented.
Description
Technical field
The invention belongs to valve field, especially relates to a kind of leakage-proof backflow-proof valve.
Background technique
At present, due to by the restriction of water meter sensitivity, when flow little to a certain degree time, water meter cannot measure its flow, thus causes damage to water supply side.Improve the measuring accuracy of water meter, reach the effect of drip metering, effectively control the loss causing the receivable water rate of charge department because of " doing little by little without a break ".Leakage-proof problem not only exists in China, even if also once existed in economically developed country, also has special countermeasure.Tap water leakage-proof has surmounted the category of economic benefit and cost of production, becomes government's common recognition of the national wealth that economizes on resources, treasures, and is a tackling key problem difficult problem for national employer's organization emphasis investigation.
And common valve, the opening and closing of control fluid passage that can only be simple, but cannot the flow direction of limit fluid, also cannot stop and avoid for refluence phenomenon incidental in the water supply process of municipal tap water, this just needs a kind of valve that can prevent water clock, prevent reverse flow of fluids, limit fluid from flowing to.
Summary of the invention
The invention provides a kind of valve that can prevent water clock, prevent reverse flow of fluids, limit fluid from flowing to.
For solving the problems of the technologies described above, the technological scheme that the invention adopts is: a kind of leakage-proof backflow-proof valve, comprise valve, the water outlet of described valve or water inlet are provided with a leakage-preventing check valve, described leakage-preventing check valve comprises valve plate, recovery device and valve seat, described valve seat is fixed in the pipeline of described valve, the outside of described valve plate is connected with described valve seat by described recovery device, the inner side of described valve plate is sealing surface, described sealing surface is provided with sealing gasket, the edge of described sealing gasket is provided with the semi-circular projection of a circle, sealing plate is provided with in described valve body, described sealing plate is that the ring-type of valve inner is given prominence to, by contacting with the sealing surface of described valve plate, sealing flow channel, described sealing plate outside be provided with ring-shaped baffle, the inwall of described ring-shaped baffle is provided with groove, the opening diameter of described ring-shaped baffle is greater than the diameter of described sealing surface, the diameter of described sealing gasket is greater than the opening diameter of described ring-shaped baffle.
Preferably, the water intake of described valve or water outlet are also provided with a safety check.
Preferably, described valve plate can axially move in described valve seat.
Preferably, described leakage-preventing check valve and safety check are all positioned at the water outlet of described valve, and described leakage-preventing check valve is in outside, and the sealing plate of described leakage-preventing check valve, the valve seat of ring-shaped baffle and described safety check is integrated.
Preferably, described sealing plate is also provided with annular projection the side of the sealing surface near described valve plate, and described annular projection can directly contact with the sealing surface of described valve plate, to realize sealing.
Preferably, the opening of described ring-shaped baffle is provided with chamfering, is convenient to entering of sealing gasket.
Preferably, described valve is the one in gate valve, ball valve.
Preferably, described sealing gasket is elastic sealing gasket.
Preferably, described sealing gasket is rubber pad.
The advantage that the invention has and good effect are: the invention is on all using function bases meeting common valve; the ducted press water of considered critical can only one-way flow; effectively prevent medium from flowing backwards; and the evaporating, emitting, dripping or leaking of liquid or gas water clock of metering trace (water meter can) of downstream line can be prevented; save installing space and installation cost, protection water supply security.
Accompanying drawing explanation
In order to be illustrated more clearly in the invention embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only the embodiment of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the invention;
Fig. 2 is the partial structurtes schematic diagram of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the invention embodiment, be clearly and completely described the technological scheme in the invention embodiment, obviously, described embodiment is only the invention part embodiment, instead of whole embodiments.Based on the embodiment in the invention, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the invention protection.
Set forth a lot of detail in the following description so that fully understand the invention, but the invention can also adopt other to be different from alternate manner described here to implement, those skilled in the art can do similar popularization under the condition without prejudice to the invention intension, and therefore the invention is not by the restriction of following public specific embodiment.
Secondly; the invention is described in detail in conjunction with schematic diagram; when describing the invention embodiment in detail; for ease of explanation; the sectional drawing of indication device part structure can be disobeyed general ratio and be made partial enlargement; and described schematic diagram is example, it should not limit the scope of the invention protection at this.In addition, the three-dimensional space of length, width and height should be comprised in actual fabrication.
As depicted in figs. 1 and 2, the invention comprises valve 1, the water outlet of described valve 1 is provided with a leakage-preventing check valve, described leakage-preventing check valve comprises valve plate 2, recovery device 3 and valve seat 4, described valve seat 4 is fixed in the pipeline of described valve 1, the outside of described valve plate 2 is connected with described valve seat 4 by described recovery device 3, the inner side of described valve plate 2 is sealing surface, described sealing surface is provided with sealing gasket 5, the edge of described sealing gasket 5 is provided with the semi-circular projection of a circle 6, sealing plate 7 is provided with in described valve body, described sealing plate 7 is that the ring-type of valve inner is given prominence to, by contacting with the sealing surface of described valve plate 2, sealing flow channel, the outside of described sealing plate 7 is provided with ring-shaped baffle 8, the inwall of described ring-shaped baffle 8 is provided with groove, the opening diameter of described ring-shaped baffle 8 is greater than the diameter of described sealing surface, the diameter of described sealing gasket 5 is greater than the opening diameter of described ring-shaped baffle 8.When the sealing surface of described sealing plate 7 with described valve plate 2 contacts, during sealing flow channel, the edge of described sealing gasket 5 embeds in the groove on the inwall of described ring-shaped baffle 8, coordinates and forms sealing.
The water outlet of described valve 1 is also provided with a safety check, and described leakage-preventing check valve is positioned at outside, and sealing plate 7, the ring-shaped baffle 8 of described leakage-preventing check valve are integrated with the valve seat of described safety check.
Described recovery device 3 is spring, and one end of described spring is embedded in the groove on described valve plate 2, and the other end is stuck in the projection on described valve seat 4.Described valve plate 2 is provided with positioning rod, and described valve seat 4 is provided with positioning hole, and described positioning rod can move along described positioning hole, and described valve plate 2 can be axially moved in described valve seat 4.
Described sealing plate 7 is also provided with annular projection in the side of the sealing surface near described valve plate 2, and described annular projection can directly contact with the sealing surface of described valve plate 2, to realize sealing.
The opening of described ring-shaped baffle 8 is provided with chamfering, is convenient to entering of sealing gasket 5.
Described valve 1 is gate valve.Described sealing gasket 5 is rubber pad.
The edge of described sealing gasket 5 is provided with the semi-circular projection of a circle 6, and the opening of described ring-shaped baffle 8 is provided with chamfering, in the groove that sealing gasket 5 is easily embedded on the inwall of described ring-shaped baffle 8, coordinates and forms sealing.Because protruding 6 block groove, therefore sealing gasket 5 departs from groove needs larger thrust, and when namely need produce larger pressure reduction at valve plate 2 two ends, sealing gasket 5 just can leave groove, now import water just by.
When water meter downstream produces water clock, valve export end pressure slowly declines, and now sealing gasket 5 is still in valve seat groove, and entrance point press water can not flow through valve.When outlet pressures drops to a certain value due to water clock, sealing gasket 5 can hightail valve seat groove, and enough inlet pressure water enters rapidly the water meter of valve export end, and water meter rotates and produces metering.When valve export pressure recover is to certain value, sealing gasket 5 automatically enters in groove and forms sealing under the effect of Returnning spring 2.
The design that two safety check are placed side by side can be avoided because one of them safety check damages the refluence phenomenon caused, and safer, non-return better effects if.
The advantage that the invention has and good effect are: the invention is on all using function bases meeting common valve; reach the effect of drip metering; effectively control the loss causing the receivable water rate of charge department because of " doing little by little without a break "; simultaneously the ducted press water of considered critical can only one-way flow; effectively prevent medium from flowing backwards; save installing space and installation cost, protection water supply security.
Above an embodiment of the invention has been described in detail, but described content being only the preferred embodiment of the invention, the practical range for limiting the invention can not being considered to.All equalization changes done according to the invention application range with improve, within the patent covering scope that still all should belong to the invention.
Claims (9)
1. a leakage-proof backflow-proof valve, comprise valve (1), it is characterized in that: the water outlet of described valve (1) or water inlet are provided with a leakage-preventing check valve, described leakage-preventing check valve comprises valve plate (2), recovery device (3) and valve seat (4), described valve seat (4) is fixed in the pipeline of described valve (1), the outside of described valve plate (2) is connected with described valve seat (4) by described recovery device (3), the inner side of described valve plate (2) is sealing surface, described sealing surface is provided with sealing gasket (5), the edge of described sealing gasket (5) is provided with the semi-circular projection of a circle (6), sealing plate (7) is provided with in described valve body, the ring-type that described sealing plate (7) is valve inner is given prominence to, by contacting with the sealing surface of described valve plate (2), sealing flow channel, the outside of described sealing plate (7) is provided with ring-shaped baffle (8), the inwall of described ring-shaped baffle (8) is provided with groove, the opening diameter of described ring-shaped baffle (8) is greater than the diameter of described sealing surface, the diameter of described sealing gasket (5) is greater than the opening diameter of described ring-shaped baffle (8).
2. leakage-proof backflow-proof valve according to claim 1, is characterized in that: the water intake of described valve (1) or water outlet are also provided with a safety check.
3. leakage-proof backflow-proof valve according to claim 1 and 2, is characterized in that: described valve plate (2) can axially move in described valve seat (4).
4. leakage-proof backflow-proof valve according to claim 2, it is characterized in that: described leakage-preventing check valve and safety check are all positioned at the water outlet of described valve (1), described leakage-preventing check valve is in outside, and sealing plate (7), the ring-shaped baffle (8) of described leakage-preventing check valve are integrated with the valve seat of described safety check.
5. leakage-proof backflow-proof valve according to claim 1 and 2, it is characterized in that: described sealing plate (7) is also provided with annular projection in the side of the sealing surface near described valve plate (2), described annular projection can directly contact with the sealing surface of described valve plate (2), to realize sealing.
6. leakage-proof backflow-proof valve according to claim 1 and 2, is characterized in that: the opening of described ring-shaped baffle (8) is provided with chamfering, is convenient to entering of sealing gasket (5).
7. leakage-proof backflow-proof valve according to claim 1 and 2, is characterized in that: described valve (1) is gate valve, one in ball valve.
8. leakage-proof backflow-proof valve according to claim 1 and 2, is characterized in that: described sealing gasket (5) is elastic sealing gasket.
9. leakage-proof backflow-proof valve according to claim 8, is characterized in that: described sealing gasket (5) is rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570765.9A CN104315205A (en) | 2014-10-23 | 2014-10-23 | Leakproof backflow-preventing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570765.9A CN104315205A (en) | 2014-10-23 | 2014-10-23 | Leakproof backflow-preventing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104315205A true CN104315205A (en) | 2015-01-28 |
Family
ID=52370482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410570765.9A Pending CN104315205A (en) | 2014-10-23 | 2014-10-23 | Leakproof backflow-preventing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104315205A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927767A (en) * | 2016-07-28 | 2016-09-07 | 广东永泉阀门科技有限公司 | Novel low-resistance backflow preventer |
| CN108799138A (en) * | 2018-06-29 | 2018-11-13 | 贾聪聪 | A kind of centrifugal pump Anti-dripping device |
| CN108955800A (en) * | 2018-10-16 | 2018-12-07 | 安徽上志智能仪表有限公司 | A kind of high sensitivity anti-backflow intellectual water meter |
| CN110608302A (en) * | 2019-09-19 | 2019-12-24 | 浙江盾安智控科技股份有限公司 | Self-rotation control valve of waterproof meter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1004715A1 (en) * | 1998-11-27 | 2000-05-31 | Vollmer Ingenieurbüro | Backflow preventer |
| US6178998B1 (en) * | 1999-06-29 | 2001-01-30 | Kane Kougyou Co., Ltd. | Reverse flow prevention apparatus |
| CN1761792A (en) * | 2003-03-14 | 2006-04-19 | 阿尔弗莱德凯歇尔有限公司及两合公司 | Valve for preventing backflow |
| CN101018917A (en) * | 2004-09-10 | 2007-08-15 | 阿尔弗雷德·凯驰两合公司 | Back flow preventor |
| CN201739572U (en) * | 2010-02-10 | 2011-02-09 | 天津市国威给排水设备制造有限公司 | Miniature backflow preventer |
| CN202937844U (en) * | 2012-12-11 | 2013-05-15 | 天津市国威给排水设备制造有限公司 | Check valve structure of backflow checker |
| CN203836298U (en) * | 2014-03-21 | 2014-09-17 | 宁波埃美柯铜阀门有限公司 | Water meter connecting pipe gate valve |
| CN204253950U (en) * | 2014-10-23 | 2015-04-08 | 天津市国威给排水设备制造有限公司 | A kind of leakage-proof backflow-proof valve |
-
2014
- 2014-10-23 CN CN201410570765.9A patent/CN104315205A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1004715A1 (en) * | 1998-11-27 | 2000-05-31 | Vollmer Ingenieurbüro | Backflow preventer |
| US6178998B1 (en) * | 1999-06-29 | 2001-01-30 | Kane Kougyou Co., Ltd. | Reverse flow prevention apparatus |
| CN1761792A (en) * | 2003-03-14 | 2006-04-19 | 阿尔弗莱德凯歇尔有限公司及两合公司 | Valve for preventing backflow |
| CN101018917A (en) * | 2004-09-10 | 2007-08-15 | 阿尔弗雷德·凯驰两合公司 | Back flow preventor |
| CN201739572U (en) * | 2010-02-10 | 2011-02-09 | 天津市国威给排水设备制造有限公司 | Miniature backflow preventer |
| CN202937844U (en) * | 2012-12-11 | 2013-05-15 | 天津市国威给排水设备制造有限公司 | Check valve structure of backflow checker |
| CN203836298U (en) * | 2014-03-21 | 2014-09-17 | 宁波埃美柯铜阀门有限公司 | Water meter connecting pipe gate valve |
| CN204253950U (en) * | 2014-10-23 | 2015-04-08 | 天津市国威给排水设备制造有限公司 | A kind of leakage-proof backflow-proof valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927767A (en) * | 2016-07-28 | 2016-09-07 | 广东永泉阀门科技有限公司 | Novel low-resistance backflow preventer |
| CN108799138A (en) * | 2018-06-29 | 2018-11-13 | 贾聪聪 | A kind of centrifugal pump Anti-dripping device |
| CN108955800A (en) * | 2018-10-16 | 2018-12-07 | 安徽上志智能仪表有限公司 | A kind of high sensitivity anti-backflow intellectual water meter |
| CN110608302A (en) * | 2019-09-19 | 2019-12-24 | 浙江盾安智控科技股份有限公司 | Self-rotation control valve of waterproof meter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |