CN1605782A - Regorging prevention automatic water inlet valve - Google Patents
Regorging prevention automatic water inlet valve Download PDFInfo
- Publication number
- CN1605782A CN1605782A CN 200410052015 CN200410052015A CN1605782A CN 1605782 A CN1605782 A CN 1605782A CN 200410052015 CN200410052015 CN 200410052015 CN 200410052015 A CN200410052015 A CN 200410052015A CN 1605782 A CN1605782 A CN 1605782A
- Authority
- CN
- China
- Prior art keywords
- valve
- check
- main valve
- seat
- automatic water
- 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
Landscapes
- Check Valves (AREA)
Abstract
The back flow preventing automatic water compensating valve is provided with valve body, sealing pair comprising main valve seat and main valve clack between the inlet and the outlet of the valve body, and elastic membrane connected to the valve body and capable of deforming with the pressure of the fluid, and the elastic membrane is transmission connected to the main valve rod to control the main valve clack. The present invention features that two non-return valve seats are set in the liquid flow channel separately between the valve inlet and the main valve seat and between the main valve seat and the valve outlet and are made to match with the corresponding non-return valve clacks to constitute sealing pairs under the action of the back flow preventing springs on the non-return valve rod. The valve can maintain the one-way flow of water in the pipeline without back flow while keeping unchanged pressure. In addition, it has compact structure.
Description
Technical field
The invention belongs to a kind of water-feeding valve that is used for the fluid circuit closed circulation system.
Background technique
The function of water-feeding valve is when downstream water is pressed deficiency; valve is opened automatically and is given moisturizing; automatically close after supplying; in order to prevent the situation that downstream water refluxes when water transport pipeline anomaly, the reduction of upstream inlet hydraulic pressure occur or cuts off the water, to occur; existing water-feeding valve has the check function of being provided with; but reflux owing to can not accomplish strict control, regular meeting occurs to the situation that bleeds back stream.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of when upstream inlet hydraulic pressure reduces or cuts off the water, and can strictly control the anti-back flow automatic water compensating valve that the backflow situation takes place.
The technological scheme that addresses the above problem is (referring to implementing illustration): the present invention is provided with valve body (27), be provided with the sealing pair that constitutes by main valve seat (19) and main valve clack (15) between valve body import (23) and the outlet (10), be equipped with valve body at main valve seat downstream side flow channel sidepiece and be connected, and can be with the flexible sheet (7) of hydrodynamic pressure generation deformation, flexible sheet is in transmission connection with the main valve stem (5) of control main valve clack folding, it is characterized in that: the liquid chunnel between valve body import (23) and the main valve seat (19) is provided with first Boilor check valve seat (25), the first corresponding non-return flap (20) is formed sealing pair with first Boilor check valve seat under the effect that is placed in the precompressed check spring (24) on first check-valve lever (21), be provided with second Boilor check valve seat (12) on the liquid chunnel between main valve seat (19) and the valve outlet (10), the second corresponding non-return flap (11) is formed sealing pair with second Boilor check valve seat under the effect that is placed in the precompressed check spring (8) on second check-valve lever (13).
Working principle of the present invention is: be arranged on main valve seat upstream and downstream side first check device and second check device respectively at precompressed check spring (24,8) effect keeps enough specific pressures down, have only when upper waters pressure greater than downstream water pressure and reach when setting ratio, first and second non-return flap could overcome the pretension elastic force of corresponding check spring respectively, first check device and second check device are opened, made the water proper flow in the pipeline; Under the state that first and second check device is all opened, when downstream water pressure increases and reaches setting value, flexible sheet (7) is heaved, and drives main valve stem (5) motion, closes main valve, stop moisturizing, when downstream water pressure was reduced to setting value, flexible sheet drove main valve stem (5) and moves round about, opens main valve, moisturizing downstream makes downstream water pressure keep constant state.
The present invention is provided with the two-stage check device in same moisturizing valve body, when anomaly appears in water transfer pipe network, upstream inlet hydraulic pressure reduces or when cutting off the water, the two-stage check device can be closed automatically, and when realizing the automatic water supplement function, keeping the downstream water constant pressure, the press water in the strict restriction conduit can only one-way flow, anti-backflow, overcome to the phenomenon that bleeds back stream, keep system pressure constant, and have the advantage of compact structure.
Description of drawings
Fig. 1, embodiment of the invention structural representation
1-bonnet, 2-set screw 3-lock nut 4-regulating spring 5-main valve stem 6-spring base 7-flexible sheet 8-check spring 9-sealing gasket 10-outlet 11-the second non-return flap 12-the second non-return valve seat 13-the second check-valve lever 14-sealing gasket 15-main valve clack 16-bottom flange 17-cut-off valve rod 18-knob 19-main valve seat 20-the first non-return flap 21-the first check-valve lever 22-screen pack 23-import 24-check spring 25-the first non-return valve seat 26-sealing gasket 27-valve body 28-cleans lid
Specific embodiments
Now the invention will be further described with accompanying drawing in conjunction with the embodiments
The import 23 of this routine valve body and outlet 10 are on same axis, flowing water passage between the inlet/outlet is provided with main valve seat 19, the opening direction of main valve seat is vertical mutually with the inlet/outlet direction, the sealing gasket 14 that is provided with on the main valve clack 15 constitutes sealing pair with main valve seat 19, main valve clack 15 1 ends are connected with main valve stem 5, and the other end is in transmission connection with the hand stop valve valve rod 17 that is arranged on the valve body.
Described manual stopper rod 17 is contained in the valve pocket of being located on the valve body bottom flange 16 with being slidingly matched, the valve pocket opening knob 18 that has been threaded, the screw that is contained in the knob top reaches the interior position over against manual stopper rod 17 of valve pocket, and manually the stopper rod the other end acts on main valve clack 15.Tighten knob 18, can act on by the screw on it by valve rod 17, inwardly jacking main valve clack 15 is closed main valve seat 19, cuts off the moisturizing water source, so that keep in repair.
The main valve stem 5 and the flexible sheet 7 that are connected with main valve clack 15 the other ends are in transmission connection, concrete structure is: on the valve body of bottom flange 16 bonnet 1 is being housed, flexible sheet 7 peripheries are compressed by the cross-linking part clamping of bonnet and valve body, spring seat 6 is clamped flexible sheet from inside and outside both sides respectively, between the spring seat outside and the bonnet Regulation spring 4 is housed, the adjusting screw 2 that is contained on the bonnet is in transmission connection with Regulation spring, fixedlys connected with described main valve stem 5 in spring seat 6 inboards.When elastic displacement takes place under the hydraulic action of downstream side in flexible sheet 7 in valve body, can drive spring seat and on main valve stem motion, the adjusting screw 2 on the bonnet is regulated in the keying of control main valve seat, can pass through the outlet water pressure in the elastic force regulation valve body downstream of Regulation spring 4.
Between valve body import 23 and main valve seat 19, be provided with first Boilor check valve seat 25, the sealing gasket 26 and first Boilor check valve seat 25 that are contained on the first non-return flap 20 in this valve seat downstream side constitute sealing pairs, be with on first check-valve lever 21 that the first non-return flap upstream extremity is connected two ends respectively precompressed act on the check spring 24 of valve stem body and valve seat upstream side.
It is identical with the above-mentioned first check device structure to be provided with second Boilor check valve seat, 12, the second check devices between valve body main valve seat 19 and valve outlet 10.
When upper waters does not have enough pressure, first and second non-return flap withstands on the valve seat mouth under the effect of loaded spring 24,8, valve body is closed, have only when upper waters pressure reaches enough pressure, first and second non-return flap 20,11 just can overcome the pretension elastic force of check spring, two safety check are opened, made valve body be in normal moisturizing functional status.
This example is provided with filter screen 22 on the water flow passage at valve body import position, the valve body that faces toward the filter screen upstream side is provided with to clean and covers 28, filter screen can prevent that foreign material from entering wearing and tearing or stuck valve that valve body increases valve body piece, prolong the working life of valve body, open the cleaning lid of valve body, can clear up the foreign material that filter screen leaches.
Claims (10)
1, a kind of anti-back flow automatic water compensating valve, be provided with valve body (27), be provided with the sealing pair that constitutes by main valve seat (19) and main valve clack (15) between valve body import (23) and the outlet (10), be equipped with valve body at main valve seat downstream side flow channel sidepiece and be connected, and can be with the flexible sheet (7) of hydrodynamic pressure generation deformation, flexible sheet is in transmission connection with the main valve stem (5) of control main valve clack folding, it is characterized in that: the liquid chunnel between valve body import (23) and the main valve seat (19) is provided with first Boilor check valve seat (25), the first corresponding non-return flap (20) is formed sealing pair with first Boilor check valve seat under the effect that is placed in the precompressed check spring (24) on first check-valve lever (21), be provided with second Boilor check valve seat (12) on the liquid chunnel between main valve seat (19) and the valve outlet (10), the second corresponding non-return flap (11) is formed sealing pair with second Boilor check valve seat under the effect that is placed in the precompressed check spring (8) on second check-valve lever (13).
2, anti-back flow automatic water compensating valve according to claim 1 is characterized in that: described main valve clack (15) one ends are connected with main valve stem (5), and the other end is in transmission connection with the hand stop valve valve rod (17) that is arranged on the valve body.
3, anti-back flow automatic water compensating valve according to claim 2, it is characterized in that: described manual stopper rod (17) is contained in the valve pocket of being located on the valve body bottom flange (16) with being slidingly matched, the valve pocket opening knob (18) that has been threaded, the screw that is contained in the knob top reaches the interior position over against manual stopper rod (17) of valve pocket, and manually the stopper rod the other end acts on main valve clack (15).
4, according to claim 1,2 or 3 described anti-back flow automatic water compensating valves, it is characterized in that: described main valve stem (5) with the structure that is in transmission connection of flexible sheet (7) is: bonnet (1) is housed on the valve body, flexible sheet (7) limit is compressed by the cross-linking part clamping of bonnet and valve body, spring seat (6) is clamped flexible sheet from inside and outside both sides, between the spring seat outside and the bonnet Regulation spring (4) is housed, the adjusting screw (2) that is contained on the bonnet is in transmission connection with Regulation spring, and spring seat (6) is inboard fixedlys connected with described main valve stem (5).
5, according to claim 1,2 or 3 described anti-back flow automatic water compensating valves, it is characterized in that: described first and second non-return flap (20,11) lays respectively at the downstream side of corresponding Boilor check valve seat, be with on first and second check-valve lever (21,1 3) that corresponding flap upstream extremity connects two ends respectively precompressed act on the check spring (24,8) of valve stem body and corresponding valve seat upstream side.
6, anti-back flow automatic water compensating valve according to claim 4, it is characterized in that: described first and second non-return flap (20,11) lays respectively at the downstream side of corresponding Boilor check valve seat, be with on first and second check-valve lever (21,13) that corresponding flap upstream extremity connects two ends respectively precompressed act on the check spring (24,8) of valve stem body and corresponding valve seat upstream side.
7, according to claim 1,2 or 3 described anti-back flow automatic water compensating valves, it is characterized in that: on the water flow passage at valve body import position, be provided with filter screen (22).
8, anti-back flow automatic water compensating valve according to claim 4 is characterized in that: be provided with filter screen (22) on the water flow passage at valve body import position.
9, anti-back flow automatic water compensating valve according to claim 5 is characterized in that: be provided with filter screen (22) on the water flow passage at valve body import position.
10, anti-back flow automatic water compensating valve according to claim 6 is characterized in that: be provided with filter screen (22) on the water flow passage at valve body import position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052015 CN1605782A (en) | 2004-11-02 | 2004-11-02 | Regorging prevention automatic water inlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052015 CN1605782A (en) | 2004-11-02 | 2004-11-02 | Regorging prevention automatic water inlet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1605782A true CN1605782A (en) | 2005-04-13 |
Family
ID=34764092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410052015 Pending CN1605782A (en) | 2004-11-02 | 2004-11-02 | Regorging prevention automatic water inlet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1605782A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148211A (en) * | 2014-08-25 | 2014-11-19 | 青岛飞扬云朵商贸有限公司 | Cloud machine mixer |
| CN104976351A (en) * | 2015-05-15 | 2015-10-14 | 中国石油天然气集团公司 | Combined valve with functions of water mixing and thermal washing |
| CN115899341A (en) * | 2023-02-27 | 2023-04-04 | 新乡市华航航空液压设备有限公司 | Novel take automatic function of breathing in absolute pressure relief pressure valve |
-
2004
- 2004-11-02 CN CN 200410052015 patent/CN1605782A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148211A (en) * | 2014-08-25 | 2014-11-19 | 青岛飞扬云朵商贸有限公司 | Cloud machine mixer |
| CN104976351A (en) * | 2015-05-15 | 2015-10-14 | 中国石油天然气集团公司 | Combined valve with functions of water mixing and thermal washing |
| CN115899341A (en) * | 2023-02-27 | 2023-04-04 | 新乡市华航航空液压设备有限公司 | Novel take automatic function of breathing in absolute pressure relief pressure valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| PL2100200T3 (en) | Flow rate regulator | |
| JP3790778B2 (en) | Automatic adjustment valve device | |
| EP0428051A2 (en) | Check valve with reduced hold-open pressure | |
| RU2008149081A (en) | PRESSURE REGULATOR MEETING THE SANITARY STANDARDS | |
| CA2661317A1 (en) | Centreline flow valve | |
| CN1605782A (en) | Regorging prevention automatic water inlet valve | |
| CN2859002Y (en) | Diaphragm pump capable of limiting and adjusting pressure | |
| CN101280857B (en) | Balance pressure water compensating valve | |
| CN1605783A (en) | Regorging prevention pressure reducing valve | |
| AU4252501A (en) | Improved hydraulic membrane valve for regulating fluid flow rate | |
| CN2675985Y (en) | Double non-return backflow preventer | |
| US4972878A (en) | Firetruck valve | |
| CN2744741Y (en) | Antipollution block valve | |
| CN201221632Y (en) | Balance pressure water-compensating valve | |
| CN213809043U (en) | Low-resistance check valve | |
| CN213271167U (en) | Valve fitting capable of stopping water return | |
| WO2007097651A1 (en) | Non-return valve with a ball-shaped valve body | |
| CN2519893Y (en) | Pressure releasing structure for one-way valve of electric water heater | |
| CN212691490U (en) | Ultrahigh pressure equipment check valve with screw mechanism | |
| CN209725345U (en) | A kind of single-chamber diaphragm weir formula pressure reducing valve | |
| CN214946470U (en) | Two-way surge tower | |
| CN2243583Y (en) | Highly sealed low noise one-way load reducing valve | |
| CN220227876U (en) | Flat gate valve with shearing function | |
| CN220727217U (en) | Check safety valve | |
| CN201671806U (en) | Constant pressure structure of booster pump |
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 |