CN102147026A - Micro backflow preventer - Google Patents
Micro backflow preventer Download PDFInfo
- Publication number
- CN102147026A CN102147026A CN201010108202XA CN201010108202A CN102147026A CN 102147026 A CN102147026 A CN 102147026A CN 201010108202X A CN201010108202X A CN 201010108202XA CN 201010108202 A CN201010108202 A CN 201010108202A CN 102147026 A CN102147026 A CN 102147026A
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- China
- Prior art keywords
- valve
- valve body
- valve plate
- backflow preventer
- spring
- 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.)
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Abstract
The invention provides a micro backflow preventer. The backflow preventer consists of a valve body I and a valve body II which are connected through screw threads and communicated, wherein a valve plate I and a valve plate II are arranged in the valve body I. When the valve is opened, the valve plates I and II linearly move rightwards under the pressure action of a medium to drive sealing rings on the valve plates to leave sealing faces so as to ensure that the medium passes normally; and when the valve is closed, the valve plates I and II linearly move leftwards under the actions of springs I and II respectively to drive the sealing rings to tightly cling to the sealing faces so as to ensure that the backflow medium cannot pass. The combined device capable of strictly limiting unidirectional flow of the pressure medium in the pipeline is provided, and the device can furthest prevent medium backflow in resident pipelines, ensure water supply safety and prevent backflow pollution. The direct-through large overflowing area design ensures low water head loss; the super-short structure ensures that the installation space is saved; and because of simple structure, the price is more economic, and the preventer is convenient for popularization.
Description
Technical field
The present invention relates to a kind of valve mechanism, particularly a kind of miniature backflow preventer.
Background technique
In the present municipal water supply engineering, particularly in the tap water engineering construction of registering one's residence or backflow-prevention device is not installed, or few part resident family dress general check valve prevents to flow backwards.Owing to having a big risk, take up an area of big, high, the unsafe reason of price, a lot of extremely urgent engineerings can not be carried out as scheduled, the drain valve of baroque backflow-prevention device adopts the structure in " post " shape cavity configuration or " cucurbit " shape chamber, all control bypass tubes all adopt plug-in pipe arrangement, resident family can't realize draining, installs and uses all very inconvenience.Do not obtain to break through because there is the important structure design problem, so price can be in any more, under existing water supply conditions as use this infrastructure product, need have high input, not meet China's actual conditions, realize that the refluence of registering one's residence prevents unrealistic, this is a unsolved fatal problem in China's town water supply, various places government knows the significance of this type product perfectly well, but can't guarantee resident's water safety because of the deadly defect of this series products, makes whole urban water supply bring great potential safety hazard.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the present invention can reach purpose really energy-conservation, safe, anti-pollution, that occupation of land is little, price is low by a kind of miniature backflow preventer is provided.
A kind of miniature backflow preventer, it is characterized in that: with described valve body one (1) and valve body two (11) by being threaded and being communicated with, described miniature backflow preventer comprises valve body one (1), valve plate one (2), seal ring one (3), spring one (4), valve plate two (5), valve seat (6), seal ring two (7), seal ring three (8), seal ring four (9), spring two (10), valve body two (11), described valve plate one (2) is arranged on the centre that valve body one (1) water inlet oral area supports, during open valve described valve plate one (1) to the right straight line move, simultaneously valve plate two (5) also to the right straight line move, during cut-off valve valve plate one (1) under the effect of spring one (4) left straight line move the sealing surface of being close on the valve body one (1); Simultaneously valve plate two (5) under the effect of spring two (10) left straight line move the sealing surface of being close on the valve seat (6).
Effect of the present invention is that the miniature backflow preventer of this structure is a kind of strict composite set that ducted pressure medium is made one-way flow that limits, and it can satisfy and prevents that at utmost the ducted medium of resident family from flowing backwards, and guarantees water supply security, prevents to pollute.The low water head loss is guaranteed in the big area of passage design of straight-through type; The super-short structure guarantees to save installing space; Simple structure makes price more economical, is convenient to promote.
Description of drawings
The sectional view of Fig. 1 during for the miniature backflow preventer normal water supply of the present invention.
Sectional view when Fig. 2 stops to supply water for the miniature backflow preventer of the present invention.
Among the figure:
1, valve body 1, valve plate 1, seal ring 1, spring 1, valve plate 26, valve seat 7, seal ring 28, seal ring 39, seal ring 4 10, spring 2 11, valve body two
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated miniature backflow preventer structure of the present invention.
Miniature backflow preventer is the structure that the technical field important breakthrough is arranged.
As shown in Figure 1, arrow is represented the media flow direction among Fig. 1.Medium promotes valve plate and opens during media flow, and the resistance that described valve plate one (1) overcomes spring one (4) during open valve straight line to the right moves, simultaneously valve plate two (5) also overcome spring two (10) resistance to the right straight line move the valve normal water supply.
As shown in Figure 2, arrow is represented the media flow direction among Fig. 2.During cut-off valve valve plate one (1) under the effect of spring one (4) left straight line move the sealing surface of being close on the valve body one (1); Simultaneously valve plate two (5) under the effect of spring two (10) left straight line move the sealing surface of being close on the valve seat (6), valve is in closed condition.
Claims (5)
1. miniature backflow preventer, it is characterized in that: with described valve body one (1) and valve body two (11) by being threaded and being communicated with, described miniature backflow preventer comprises valve body one (1), valve plate one (2), seal ring one (3), spring one (4), valve plate two (5), valve seat (6), seal ring two (7), seal ring three (8), seal ring four (9), spring two (10), valve body two (11), described valve plate one (2) is arranged on the centre that valve body one (1) water inlet oral area supports, during open valve described valve plate one (1) to the right straight line move, simultaneously valve plate two (5) also to the right straight line move, during cut-off valve valve plate one (1) under the effect of spring one (4) left straight line move the sealing surface of being close on the valve body one (1); Simultaneously valve plate two (5) under the effect of spring two (10) left straight line move the sealing surface of being close on the valve seat (6).
2. miniature backflow preventer according to claim 1 is characterized in that: described valve body one (1) and valve seat (6) sealing surface are that 30 degree are conical, and the sealing surface of described valve plate one (2), valve plate two (5) is that 30 degree are conical.
3. miniature backflow preventer according to claim 1 is characterized in that: two valve plates that are used for non-return are arranged in the valve body, be useful on the boss of guiding and the seal ring that is used to seal on valve plate one (1), the valve plate two (2).
4. miniature backflow preventer according to claim 1 is characterized in that: valve body is made up of valve body one (1) and valve body two (10), and valve body one closely is connected and is communicated with by screw thread with valve body two.
5. miniature backflow preventer according to claim 1, it is characterized in that: valve plate one (1) and valve plate two (10) promote straight line motion to the right by medium when opening, and promote left the straight line motion sealing surface separately of fitting by spring one (4) and spring two (7) respectively when closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010108202XA CN102147026A (en) | 2010-02-10 | 2010-02-10 | Micro backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010108202XA CN102147026A (en) | 2010-02-10 | 2010-02-10 | Micro backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102147026A true CN102147026A (en) | 2011-08-10 |
Family
ID=44421427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010108202XA Pending CN102147026A (en) | 2010-02-10 | 2010-02-10 | Micro backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102147026A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213239A (en) * | 2011-07-15 | 2011-10-12 | 袁兴立 | Binding type multilevel-pneumatic water pump |
| CN105042122A (en) * | 2015-08-26 | 2015-11-11 | 天津市塘沽沃特斯阀门有限公司 | Water-saving minitype backflow preventer |
Citations (5)
| 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 |
-
2010
- 2010-02-10 CN CN201010108202XA patent/CN102147026A/en active Pending
Patent Citations (5)
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213239A (en) * | 2011-07-15 | 2011-10-12 | 袁兴立 | Binding type multilevel-pneumatic water pump |
| CN105042122A (en) * | 2015-08-26 | 2015-11-11 | 天津市塘沽沃特斯阀门有限公司 | Water-saving minitype backflow preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110810 |