CN201057305Y - Combined valve - Google Patents
Combined valve Download PDFInfo
- Publication number
- CN201057305Y CN201057305Y CNU2007201096064U CN200720109606U CN201057305Y CN 201057305 Y CN201057305 Y CN 201057305Y CN U2007201096064 U CNU2007201096064 U CN U2007201096064U CN 200720109606 U CN200720109606 U CN 200720109606U CN 201057305 Y CN201057305 Y CN 201057305Y
- Authority
- CN
- China
- Prior art keywords
- valve
- reduction
- reduction valve
- valve body
- barrier film
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a combination valve, comprising a valve body of the combination valve. The valve body is provided with a pressure reducing valve; the inlet and outlet of the valve body and the pressure reducing area of the pressure reducing valve are respectively provided with a check valve and the starting directions of the two check valves are the same; a high pressure chamber, which controls operation, in the pressure reducing valve is connected with the inlet of the check valve at the inlet end of the valve body; the place in the pressure reducing valve that is matched with a valve core of the pressure reducing valve in a sealing way is a waterspout. The inlet and outlet ends of the valve body are respectively provided with one ball valve. The structure of the utility model is reasonable; when the check valves leak or fail, the problem of dirty liquid refluxing in pipelines can be prevented and the utility model is convenient for later maintenance and repair.
Description
Technical field
The utility model relates to a kind of valve technology field, especially relates to combination brake switch and proporting.
Background technique
In water-carriage system, often require the water in the water-main road can transport to an aqueduct, and can not allow the water that props up in the aqueduct be back in the water-main road, therefore, for anti-sealing pours in down a chimney, generally all between adds a safety check.But, owing to have only a safety check, in case this safety check generation seepage phenomenon just might make impure water in the aqueduct be back in the water-main road and pollute, and cause valve not long and ineffective working life owing to be difficult to maintenance.
Combination brake switch and proporting is also disclosed though the patent No. is 200420053996.4 Chinese patent " multi-functional combination brake switch and proporting ", but, their this structures also can't solve technical barriers such as foregoing seepage, backwater, maintenance, similarly, the patent No. is that the Chinese patent " a kind of combination brake switch and proporting " of 95246778.X also exists such problem, and is not suitable for using on liquid.
Press for a kind of combination brake switch and proporting in water-carriage system, it can solve backward flow problem, can also solve maintenance issues.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of combination brake switch and proporting, and it is rational in infrastructure, under safety check seepage or malfunctioning situation, can prevent the problem of ducted unclean liquid return.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of combination brake switch and proporting, it comprises the valve body of combination brake switch and proporting, it is characterized in that being provided with in the valve body reduction valve, a safety check is respectively arranged between the reduced-pressure zone of the import of valve body and outlet and reduction valve, and the opening direction of two safety check is identical; The hyperbaric chamber of control action is connected with the check valve inlet of the entrance point that is positioned at valve body in the reduction valve, and cooperating part with the seal spool of reduction valve in the reduction valve is drain opening.
As further improvement, described valve body also respectively is provided with a ball valve in import and outlet two ends, can cut off the water route when safeguarding.
Further improve, described reduction valve adopts the diaphragm type reduction valve, the valve seat of reduction valve is fastened on the valve body with bolt, the valve gap of reduction valve is fixed by bolts on the valve seat of reduction valve, and clamping is lived barrier film, the barrier film cavity of resorption below barrier film, the spool of reduction valve removably is installed between the valve seat of barrier film and reduction valve, become reduced-pressure zone, and the above barrier film epicoele of barrier film becomes the zone of high pressure, is connected by the check valve inlet of runner with the entrance point of valve body.Make reduction valve be unit independently, simple with the assembling of valve body, very convenient regular maintenance and timely repairing when fault is arranged and spool cleaned and changed to this valve.
Further improve, the be threaded valve gap of safety check of described check valve port removably is equipped with the spool of safety check in the valve gap.Make safety check be unit independently, simple with the assembling of valve body, very convenient regular maintenance and timely repairing when fault is arranged and spool cleaned and changed to this valve.
Compared with prior art, advantage of the present utility model is: adopt number of ways to prevent the backflow of liquid effectively, under safety check seepage or malfunctioning situation, also can prevent the backflow of ducted unclean liquid, and a ball valve is also respectively arranged at the import and export two ends of valve body, and can when safeguarding, cut off the water route, safety check and reduction valve all are unit independently in addition, simple with the assembling of valve body, very convenient the regular maintenance of this valve, timely repairing when fault is arranged and spool are cleaned and change.
Description of drawings
Fig. 1 is one of combination brake switch and proporting partial structurtes sectional view of the present utility model;
Fig. 2 is two of a combination brake switch and proporting partial structurtes sectional view of the present utility model;
Fig. 3 is three of a combination brake switch and proporting partial structurtes sectional view of the present utility model;
Fig. 4 is four of a combination brake switch and proporting partial structurtes sectional view of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As Fig. 1-4 signal, a kind of combination brake switch and proporting, it comprises the valve body 1 of combination brake switch and proporting, be provided with reduction valve 8 in the valve body 1, reduction valve 8 is to adopt the diaphragm type reduction valve, the valve seat 81 usefulness bolts of reduction valve are fastened on the valve body 1, the valve gap 82 of reduction valve also is fixed by bolts on the valve seat 81 of reduction valve, and clamping is lived barrier film 83, it below barrier film barrier film cavity of resorption 86, make the spool 84 that reduction valve removably is installed between the valve seat of barrier film and reduction valve, become reduced-pressure zone 4, spool 84 mainly is by piston body and valve core housing, springs etc. are made, also can adopt traditional spool to make, as long as it is detachably just passable, and the above barrier film epicoele 85 of barrier film becomes the zone of high pressure, the import 2 of valve body is connected and installed with safety check 5, the zone of high pressure is connected with safety check 5 imports of the entrance point of valve body by runner 87, the hyperbaric chamber of control action in the reduction valve is connected with safety check 5 imports of the entrance point that is positioned at valve body, also be provided with another safety check 6 between the outlet 3 of valve body and the reduced-pressure zone 4 of reduction valve, and two safety check 5,6 opening direction is identical, be drain opening 88 with the spool 84 of the reduction valve part that is sealed and matched in the reduction valve, safety check 5, the be threaded valve gap 7 of safety check of 6 ports, safety check 5 removably is installed in the valve gap 7,6 spool, spool can adopt schematic structure, also can adopt traditional spool, as long as detachably just passable.At last, valve body 1 also respectively is provided with a ball valve 9,10 in import and outlet two ends.
Its working principle is such, normal water supply: the water in a. water-main road supplies water to the user to safety check 6 outlets on the exit position through reduced-pressure zone 4 from the safety check on the entrance location 5, safety check 5 import high pressure waters on the entrance location lead directly to reduction valve barrier film epicoele 85, and barrier film cavity of resorption 86 communicates with safety check 6 imports on the exit position, because there is certain pressure reduction in it, promote barrier film 83 and move down, reduction valve 8 cuts out, the combination brake switch and proporting normal water supply is as Fig. 3; B. pipeline no user behind valve, water is static.Remain unchanged as inlet pressure, have pressure reduction before and after it, combination brake switch and proporting still is closed condition; C. descend as inlet pressure, when pressure reduction dropped to certain value before and after it, spring promoted barrier film 83 upwards, and reduction valve 8 is opened pressure releases, and pressure release is when recovering certain difference with inlet pressure, and reduction valve 8 cuts out again.Seal malfunctioning: ductwork pressure raises after the combination brake switch and proporting, and when surpassing before the valve inlet pressure, as the intact ne-leakage of 6 sealings of the safety check on the exit position, high pressure water can not flow backwards, and the reduction valve barrier film keeps original pressure reduction up and down, and reduction valve 8 cuts out not pressure release.Safety check 6 seal break-offs on the exit position produce seepage, and pressure raises before the safety check 6 on the exit position, cause the reduction valve barrier film up and down pressure reduction reduce, reduction valve 8 is opened, and by drain opening 88 draining pressure releases, sees Fig. 4; At this moment, as 5 while of the safety check on entrance location seal break-off, because the high pressure water that the safety check on the exit position flows backwards back pressure release decompression, so can not flow backwards back into the locational safety check 5 of mouth.Constantly descend as pressure of supply water in the water supply process, then reduction valve barrier film upper pressure descends, and the reduction valve control spring promotes spool and opens the reduction valve draining.When inlet pressure dropped to zero or negative pressure, reduction valve 8 was opened fully, and water is discharged, and air enters vacuum chamber from reduction valve 8, thereby prevents to produce siphon refluence phenomenon.
Relevant maintenance issues, the same with all valves, combination brake switch and proporting at work also can accumulated impurity, periodically can help to avoid the accumulation of impurity to the flushing of the filter screen of dirty operation in the equipment.The all inner bodies of combination brake switch and proporting can be by unloading and can directly cleaning with hairbrush.Open decompression during valve gap, can take out the spool of reduction valve easily, it is safeguarded or changes.Open check-valve cap, can take out the spool of safety check easily, it is safeguarded or changes.
Claims (4)
1. combination brake switch and proporting, the valve body that it comprises combination brake switch and proporting is characterized in that being provided with in the valve body reduction valve, a safety check is respectively arranged between the reduced-pressure zone of the import of valve body and outlet and reduction valve, and the opening direction of two safety check is identical; The hyperbaric chamber of control action is connected with the check valve inlet of the entrance point that is positioned at valve body in the reduction valve, and cooperating part with the seal spool of reduction valve in the reduction valve is drain opening.
2. combination brake switch and proporting according to claim 1 is characterized in that described valve body also respectively is provided with a ball valve in import and outlet two ends.
3. combination brake switch and proporting according to claim 2, it is characterized in that described reduction valve adopts the diaphragm type reduction valve, the valve seat of reduction valve is fastened on the valve body with bolt, the valve gap of reduction valve is fixed by bolts on the valve seat of reduction valve, and clamping is lived barrier film, barrier film cavity of resorption below barrier film, the spool of reduction valve removably is installed between the valve seat of barrier film and reduction valve, become reduced-pressure zone, and the above barrier film epicoele of barrier film becomes the zone of high pressure, is connected by the check valve inlet of runner with the entrance point of valve body.
4. combination brake switch and proporting according to claim 3 is characterized in that the be threaded valve gap of safety check of described check valve port, and the spool of safety check removably is installed in the valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201096064U CN201057305Y (en) | 2007-05-18 | 2007-05-18 | Combined valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201096064U CN201057305Y (en) | 2007-05-18 | 2007-05-18 | Combined valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057305Y true CN201057305Y (en) | 2008-05-07 |
Family
ID=39426147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201096064U Expired - Fee Related CN201057305Y (en) | 2007-05-18 | 2007-05-18 | Combined valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057305Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718352B (en) * | 2009-12-31 | 2011-11-16 | 台州高标机械有限公司 | Reduced pressure type ball valve |
-
2007
- 2007-05-18 CN CNU2007201096064U patent/CN201057305Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718352B (en) * | 2009-12-31 | 2011-11-16 | 台州高标机械有限公司 | Reduced pressure type ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20120518 |