CN102486237A - Backflow preventer with built-in filter screen and no external piping - Google Patents
Backflow preventer with built-in filter screen and no external piping Download PDFInfo
- Publication number
- CN102486237A CN102486237A CN2010105687290A CN201010568729A CN102486237A CN 102486237 A CN102486237 A CN 102486237A CN 2010105687290 A CN2010105687290 A CN 2010105687290A CN 201010568729 A CN201010568729 A CN 201010568729A CN 102486237 A CN102486237 A CN 102486237A
- Authority
- CN
- China
- Prior art keywords
- valve body
- diaphragm
- backflow preventer
- valve
- filter screen
- 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.)
- Pending
Links
Images
Abstract
The invention provides a backflow preventer with a built-in filter screen and no external piping. The backflow preventer comprises a valve body I and a valve body II which are in threaded connection and communication; when a valve is closed, a valve plate I leftwards linearly moves to be tightly attached to a sealing surface on the valve body I under the action of a spring I; and meanwhile, a valve plate II leftwards linearly moves to be tightly attached to a sealing surface on a valve seat under the action of a spring II. A diaphragm is arranged in a control chamber of a drain opening; the periphery of the diaphragm is laid on the top end surface of a sealing gasket, is covered by a lower cover and is fastened at the drain opening of the valve body to form the control chamber; and water of a water inlet enters the control chamber through a through hole in the valve body I to push the diaphragm to upwards or downwards move. The backflow preventer has the beneficial effects that: according to the backflow preventer with the structure, a pressure medium in a pipeline can be strictly limited and can only flow in one way; the structure is compact; a mounting space is saved; the requirements that a backflow medium in a pipeline or a medium positioned at the criticality backflow can be discharged out of the pipe at any work condition can be met; air isolation is formed; no plug-in accessories are required; the safety of water supply is ensured; and the pollution is prevented.
Description
Technical field
The present invention relates to a kind of valve mechanism, particularly a kind of built-in filter screen and the backflow preventer that need not external pipe arrangement.
Background technique
Present backflow preventer adopts " Y " type direct current type structure, and structure is longer, and a lot of improvement projects are because dimensional problem can not be carried out as scheduled, and drain valve adopts the structure in " post " shape cavity configuration or " cucurbit " shape chamber, and all control bypass tubes all adopt plug-in pipe arrangement.This structure makes its loss of head be generally 7-9 rice on the one hand, does not obtain to break through because there is the important structure design problem, so can't reduce its loss of head; As using this infrastructure product, because loss of head greatly then has too many user can not drink tap water, this is the major reason that this series products can not be promoted under existing water conditions; When diaphragm has damage, be difficult to judge whether refluence water gets into the upper reaches through bypass line, is unfavorable for water supply security on the other hand; Bypass tube is a weak spot, loses easily, is destroyed; Or utilized by the bad person and to poison, be the unsolved so far fatal problem of this series products, national governments know the significance of this type product perfectly well; But can't guarantee resident's water safety, make whole urban water supply bring great potential safety hazard because of the deadly defect of this series products.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the present invention can reach really energy-conservation, safe, anti-pollution through a kind of built-in filter screen and backflow preventer that need not external pipe arrangement are provided, and takes up an area of little purpose.
A kind of built-in filter screen and backflow preventer that need not external pipe arrangement; This backflow preventer comprises that valve body one (1) and valve body two (11) are through being threaded and being communicated with; Said 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), diaphragm (12), sealing gasket (13), lower cover (14), filter screen (15); Said valve plate one (2) is arranged on the centre that valve body one (1) water intake supports, when closing valve plate one (2) 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 body one (1) below is provided with diaphragm (12), sealing gasket (13) in the control room; Cover and be fastened on the bottom of valve body one with lower cover (14), form the control room, the water of water intake need directly not get into the control room epicoele through any external pipe arrangement through the through hole on the valve body one (1); Press water can promote diaphragm (12) and contact lower cover (14) sealed mouth from top to bottom; During the water intake decompression, backwater flows into pressure relief opening through filter screen (15), promotes to move sluicing on the diaphragm (12).
Effect of the present invention is that the backflow preventer of this structure is a kind of strict composite set that ducted pressure medium is made one-way flow that limits; It can satisfy under any operating mode all and can ducted refluence medium or the medium that is in critical refluence " led " outside the pipe; Guarantee water supply security, prevent to pollute.The low water head loss is guaranteed in straight-through type, big area of passage design; The super-short structure guarantees to save installing space.
Description of drawings
Fig. 1 is the sectional view of normal water supply of the present invention;
The sectional view that Fig. 2 stops to supply water for 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 2 12, diaphragm 13, sealing gasket 14, lower cover 15, filter screen
Embodiment
In conjunction with accompanying drawing and embodiment backflow preventer structure of the present invention is explained.
Built-in filter screen is the structure that the technical field important breakthrough is arranged with backflow preventer that need not external pipe arrangement.
Like Fig. 1, shown in 2, arrow is represented the media flow direction among Fig. 1.A kind of built-in filter screen and backflow preventer that need not external pipe arrangement; This backflow preventer comprises that valve body one (1) and valve body two (11) are through being threaded and being communicated with; Said 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), diaphragm (12), sealing gasket (13), lower cover (14), filter screen (15); Said valve plate one (2) is arranged on the centre that valve body one (1) water intake supports, during cut-off valve valve plate one (2) 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 body one (1) below is provided with diaphragm (12), sealing gasket (13) in the control room; Cover and be fastened on the bottom of valve body one with lower cover (14), form the control room, the water of water intake need directly not get into the control room epicoele through any external pipe arrangement through the through hole on the valve body one (1); Press water can promote diaphragm (12) and contact lower cover (14) sealed mouth from top to bottom; When the water intake decompression, backwater flows into pressure relief opening through filter screen, promotes to move sluicing on the diaphragm (12).
Valve plate one (2) and valve plate two (5) move right during open valve, and two valve plates are moved to the left and are close to pedestal separately during cut-off valve.During proper flow, on one side medium flows into sluicing part diaphragm control room from entrance point, promote diaphragm (12) and close, the valve plate one (2) of flowing through, valve plate two (5) flow to the waterexit end on one side, and two groups of safety check are normally opened, forward water supply.
As shown in Figure 2, valve plate one (2) and valve plate two (5) are moved to the left and are close to pedestal separately when stopping to supply water; When feed-water end decompression or valve plate damage, two blocks of water that are used as between the valve plate of non-return promote diaphragms (12) and move upward, and begin to sluice.
Claims (6)
1. built-in filter screen and backflow preventer that need not external pipe arrangement; This backflow preventer includes valve body one (1) and valve body two (11) through being threaded and being communicated with; Said 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), diaphragm (12), sealing gasket (13), lower cover (14), filter screen (15); Said valve plate one (2) is arranged on the centre that valve body one (1) water intake supports, when closing valve plate one (2) 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 body one (1) below is provided with diaphragm (12), sealing gasket (13) in the control room; Cover and be fastened on the bottom of valve body one (1) with lower cover (14); Form the control room; The water of water intake need directly not get into the control room epicoele through any external pipe arrangement through the through hole on this valve body one (1), and press water can promote diaphragm (12) and move from top to bottom, thereby makes diaphragm (12) contact lower cover (14) sealed mouth; When the water intake decompression, backwater can flow into pressure relief opening through filter screen, promotes to move away lower cover (14) sealed mouth on the diaphragm (12), makes control room Nei Shui enter discharge opening, and valve sluices.
2. built-in filter screen according to claim 1 and backflow preventer that need not external pipe arrangement; It is characterized in that: the check valve plate that its inside has two non-returns to use; The bottom has one as the hole that sluices between valve plate one (2) and the valve plate two (5), and sluicing is closed and opened in this Kong Youyi hydraulic control mechanism control.
3. built-in filter screen according to claim 1 and backflow preventer that need not external pipe arrangement; It is characterized in that: said control room is below this valve body; Form by diaphragm and baffle plate; Diaphragm moves upward and leaves sealing surface unlatching pressure release, and the contact seal face that moves downward stops pressure release, and the sealing surface of diaphragm (12) middle part lug boss branch contact is the convex portion of lower cover.
4. built-in filter screen according to claim 1 and backflow preventer that need not external pipe arrangement; It is characterized in that: the water of water intake gets into the control room inner chamber through the through hole on this valve body one (1); Need not plug-in accessory, control room inner chamber and discharge opening sealing relatively are isolated.
5. built-in filter screen according to claim 1 and backflow preventer that need not external pipe arrangement; It is characterized in that: said bottom discharge opening, during unlatching, surface of contact flowed out around the water of this discharge opening can pass through diaphragm and sealing gasket periphery; When diaphragm was closed downwards, the water of discharge opening can not flow out.
6. built-in filter screen according to claim 1 and backflow preventer that need not external pipe arrangement is characterized in that: there is filter screen valve body one internal surface discharge opening top, can impurity can't be passed through impurity screening from pressure relief opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105687290A CN102486237A (en) | 2010-12-01 | 2010-12-01 | Backflow preventer with built-in filter screen and no external piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105687290A CN102486237A (en) | 2010-12-01 | 2010-12-01 | Backflow preventer with built-in filter screen and no external piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102486237A true CN102486237A (en) | 2012-06-06 |
Family
ID=46151767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105687290A Pending CN102486237A (en) | 2010-12-01 | 2010-12-01 | Backflow preventer with built-in filter screen and no external piping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102486237A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078096A1 (en) * | 2013-11-29 | 2015-06-04 | 宁波西文电器有限公司 | Two-way pressure relief valve |
| CN107327580A (en) * | 2017-06-28 | 2017-11-07 | 扬中市第蝶阀厂有限公司 | A kind of regulating valve of antiscour |
| CN108487386A (en) * | 2018-03-20 | 2018-09-04 | 浙江三泉智能科技有限公司 | Air is every dirty device and intelligent closestool |
| CN110332341A (en) * | 2019-08-23 | 2019-10-15 | 德尔保定智能流体有限公司 | A kind of backflow preventer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3742207A1 (en) * | 1987-12-12 | 1989-06-22 | Lang Apparatebau Gmbh | BACKFLOW PREVENTORS, ESPECIALLY FOR INSTALLATION IN DRINKING WATER PIPES |
| KR20060033621A (en) * | 2004-10-15 | 2006-04-19 | 주식회사 바램 | Backflow preventer |
| CN201221625Y (en) * | 2008-07-11 | 2009-04-15 | 上海上龙阀门厂 | Backflow preventer built-in with filtering net |
| CN201335182Y (en) * | 2008-11-27 | 2009-10-28 | 武汉大禹阀门制造有限公司 | Magnetic backflow preventer |
| CN101749460A (en) * | 2008-12-10 | 2010-06-23 | 刘永 | Dual-membrane micro-resistant ultrashort backflow preventer |
| CN101749461A (en) * | 2008-12-15 | 2010-06-23 | 刘永 | Screw-thread backflow prevention device being free from being equipped with external conduit |
| CN101750127A (en) * | 2008-12-15 | 2010-06-23 | 刘永 | Water meter preventing back-flow of sewage |
| CN202132558U (en) * | 2010-12-01 | 2012-02-01 | 刘永 | Built-in filter screen and backflow preventer without built-out piping |
-
2010
- 2010-12-01 CN CN2010105687290A patent/CN102486237A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3742207A1 (en) * | 1987-12-12 | 1989-06-22 | Lang Apparatebau Gmbh | BACKFLOW PREVENTORS, ESPECIALLY FOR INSTALLATION IN DRINKING WATER PIPES |
| KR20060033621A (en) * | 2004-10-15 | 2006-04-19 | 주식회사 바램 | Backflow preventer |
| CN201221625Y (en) * | 2008-07-11 | 2009-04-15 | 上海上龙阀门厂 | Backflow preventer built-in with filtering net |
| CN201335182Y (en) * | 2008-11-27 | 2009-10-28 | 武汉大禹阀门制造有限公司 | Magnetic backflow preventer |
| CN101749460A (en) * | 2008-12-10 | 2010-06-23 | 刘永 | Dual-membrane micro-resistant ultrashort backflow preventer |
| CN101749461A (en) * | 2008-12-15 | 2010-06-23 | 刘永 | Screw-thread backflow prevention device being free from being equipped with external conduit |
| CN101750127A (en) * | 2008-12-15 | 2010-06-23 | 刘永 | Water meter preventing back-flow of sewage |
| CN202132558U (en) * | 2010-12-01 | 2012-02-01 | 刘永 | Built-in filter screen and backflow preventer without built-out piping |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078096A1 (en) * | 2013-11-29 | 2015-06-04 | 宁波西文电器有限公司 | Two-way pressure relief valve |
| CN107327580A (en) * | 2017-06-28 | 2017-11-07 | 扬中市第蝶阀厂有限公司 | A kind of regulating valve of antiscour |
| CN108487386A (en) * | 2018-03-20 | 2018-09-04 | 浙江三泉智能科技有限公司 | Air is every dirty device and intelligent closestool |
| CN108487386B (en) * | 2018-03-20 | 2024-03-22 | 山东联大凯威实业发展有限公司 | Air dirt isolation device and intelligent closestool |
| CN110332341A (en) * | 2019-08-23 | 2019-10-15 | 德尔保定智能流体有限公司 | A kind of backflow preventer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101749460A (en) | Dual-membrane micro-resistant ultrashort backflow preventer | |
| CN102486237A (en) | Backflow preventer with built-in filter screen and no external piping | |
| CN101749461B (en) | Screw-thread backflow prevention device being free from being equipped with external conduit | |
| CN202056363U (en) | Dual-diaphragm micro-resistance ultrashort backflow preventer | |
| CN202132558U (en) | Built-in filter screen and backflow preventer without built-out piping | |
| CN202597807U (en) | Copper-plastic composite decompression type backflow preventer | |
| CN201739573U (en) | Backflow preventer for water meter | |
| CN203223591U (en) | Four-way valve for water dispenser | |
| CN102261499A (en) | Double-diaphragm backflow preventer without external piping and capable of preventing abnormal water drainage of water draining opening | |
| CN102192332B (en) | Anti-siphon vacuum break valve | |
| CN101210425A (en) | Municipal ductwork pressure protector | |
| CN201739572U (en) | Miniature backflow preventer | |
| CN203009918U (en) | Decompression split-flow valve and water purification machine formed by decompression split-flow valve | |
| CN203223594U (en) | Low-resistance exhaust type backflow preventing device | |
| CN207228264U (en) | A kind of one-in-and-two-out solenoid valve | |
| CN201215199Y (en) | Double-diaphragm ultra-short backflow preventer | |
| CN201916551U (en) | Pressure reducing type backflow preventer | |
| CN102147026A (en) | Micro backflow preventer | |
| CN202733133U (en) | Circular automatic exhaust valve | |
| CN219922878U (en) | Liquid guide mechanism at bottom of packed tower | |
| CN207005414U (en) | A kind of favourable opposition valve with corrosion-resistant structure | |
| JP3205535U (en) | Fuel supply device and oil return buffer bottle | |
| CN201057305Y (en) | Combined valve | |
| CN203670961U (en) | Special valve for pressure-bearing water storage equipment | |
| CN102207214A (en) | Backflow preventing device for water meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: LIU QING Effective date: 20120924 Owner name: TIANJIN GUOWEI WATER SUPPLY AND DRAINAGE EQUIPMENT Free format text: FORMER OWNER: LIU YONG Effective date: 20120924 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120924 Address after: 300300 Tianjin District of Dongli City Yuejin Road No. 13 Applicant after: Tianjin Guowei Feeding & Drainage Equipment Ment Manufacturing Co., Ltd. Address before: 300300, Dongli District, Tai'an, Tianjin, 7, 2, 105 Applicant before: Liu Yong Applicant before: Liu Qing |
|
| DD01 | Delivery of document by public notice |
Addressee: Liu Qing Document name: Notification of Passing Examination on Formalities |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120606 |