CN201575207U - Constant pressure valve - Google Patents
Constant pressure valve Download PDFInfo
- Publication number
- CN201575207U CN201575207U CN2009201750989U CN200920175098U CN201575207U CN 201575207 U CN201575207 U CN 201575207U CN 2009201750989 U CN2009201750989 U CN 2009201750989U CN 200920175098 U CN200920175098 U CN 200920175098U CN 201575207 U CN201575207 U CN 201575207U
- Authority
- CN
- China
- Prior art keywords
- pressure
- spool
- chamber
- valve
- valve core
- 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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- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to a constant pressure valve capable of keeping the pressure of water flow constant. The constant pressure valve comprises a valve body; wherein a valve core chamber, a water inlet and a water outlet are arranged on the valve body; a channel passing through the valve core chamber is arranged between the water inlet and the water outlet; a pressure chamber is arranged on the valve body; the valve core chamber and the water outlet are communicated with the pressure chamber; a gland with an threaded hole is fixedly arranged at the top end of the valve core chamber; a valve core, a spring and a top block are arranged in the valve core chamber in sequence; an adjusting screw is screwed in the threaded hole of the gland; a groove is formed on the valve core at the channel; a sealing groove is formed at the upper part of the groove of the valve core; a sealing ring is arranged on the sealing groove; and the lower part of the valve core is fitted with the valve core chamber. The constant pressure valve has the advantages of small volume, light weight, simple and reasonable structure, convenient assembly and use, and the like, and the stability of the pressure behind the valve is good.
Description
Technical field
The utility model relates to a kind of auxiliary device that uses in the water drainage-supply system of giving, and relates in particular to a kind of constant pressure valve that can keep the current constant voltage.
Background technique
In water system, because the water that is provided by same water supply mechanism is provided the difference of physical features height, the hydraulic pressure difference in each department, the higher area of physical features is at water use peak phase normal water often.Constant pressure valve is that the secondary fluid pressure is not subjected to a fluid pressure to influence, be that discharge pressure is not influenced by pressure of supply water, realizes constant voltage output.Complex structure as the existing constant pressure valve, volume is bigger, and cost is higher.
The model utility content
The purpose of this utility model is to provide a kind of constant pressure valve, and it has characteristics such as simple in structure, that volume is little, cost is low.
The technological scheme that technical problem adopted that the utility model solves is: constant pressure valve comprises valve body, valve body is provided with spool chamber, water intake and water outlet, be provided with passage between water intake and water outlet, passage runs through spool chamber, it is characterized in that: valve body is provided with pressure chamber, and spool chamber, water outlet communicate with pressure chamber, and the top of spool chamber is fixed with gland with threaded hole, be provided with spool, spring, jacking block in the spool chamber successively, be provided with on the tapped hole that adjusting screw is spun on gland; The spool at passage place is provided with groove, and spool groove top is provided with seal groove, is furnished with seal ring on the seal groove, keeps sealing to guarantee spool top and spool chamber, and spool bottom and spool chamber are suitable.
During use, pressure by the adjusting screw setting spring, the water of water intake enters water outlet by the spool of passage, and excessive when water outlet pressure, the pressure of water outlet can be sent to the end of spool by pressure chamber, spool jack-up, the aperture of spool groove reduces, and passage diminishes, and the water flow of water intake diminishes, the pressure of water outlet also limit is little, just keeps original pressure; Otherwise the pressure of water outlet is less than the pressure of setting, and spring presses down automatically, and the aperture of spool groove increases, and it is big that passage becomes, and water outlet pressure increases, and just keeps original pressure.Spool bottom and spool chamber are suitable, have guaranteed that the water pressure energy of pressure chamber transfers out the effect of the hydraulic pressure at the mouth of a river to spool effectively.By above-mentioned principle, realize the current constant voltage.On this structure, reduced many parts than the constant pressure valve of prior art, volume is little, has reduced cost.
The beneficial effects of the utility model are: have characteristics such as volume is little, in light weight, simple and reasonable, easy to install, and the downstream pressure good stability.
Description of drawings
Below in conjunction with drawings and Examples model utility is further specified.
Fig. 1 is the utility model example structure schematic representation.
Among the figure: 1, valve body 2, O-ring seals 3, spring 4, adjusting screw 5, jacking block 6, gland 7, spool 8, water intake 9, water outlet 10, passage 11, pressure chamber
Embodiment:
In Fig. 1, constant pressure valve comprises valve body 1, valve body 1 is provided with spool chamber, water intake 8 and water outlet 9,9 of water intake 8 and water outlets are provided with path 10, and path 10 runs through spool chamber, and valve body 1 is provided with pressure chamber 11, spool chamber, water outlet 9 communicate with pressure chamber 11, the top of spool chamber is fixed with gland with threaded hole 6, is provided with spool 7, spring 4, jacking block 5 in the spool chamber successively, is provided with on the tapped hole that adjusting screw 4 is spun on gland 6; The spool 7 at path 10 place is provided with groove, the groove top of spool 7 is provided with seal groove, is furnished with O-ring seals 2 on the seal groove, to guarantee that spool 7 tops and spool chamber keep sealing, spool 7 bottoms and spool chamber are suitable, have guaranteed that the water pressure energy of pressure chamber 11 transfers out the effect of the hydraulic pressure at the mouth of a river 9 to spool 7 effectively.
Working principle: in Fig. 1, during use, by the pressure of adjusting screw 4 setting springs 3, the water of water intake 8 enters water outlet 9 by the spool of path 10, when water outlet 9 pressure excessive, the pressure of water outlet 9 can be sent to the end of spool 7 by pressure chamber 11, and spool 7 jack-up, the aperture of spool 7 grooves reduces, path 10 diminishes, the water flow of water intake 8 diminishes, and the pressure of water outlet 9 also limit is little, just keeps original pressure; Otherwise the pressure of water outlet 9 is less than the pressure of setting, and spring 3 presses down automatically, and the aperture of spool 7 grooves increases, and path 10 diminishes, and water outlet 9 pressure increase, and just keep original pressure.By above-mentioned principle, realize the current constant voltage.
Claims (1)
1. constant pressure valve comprises valve body, valve body is provided with spool chamber, water intake and water outlet, be provided with passage between water intake and water outlet, passage runs through spool chamber, it is characterized in that: valve body is provided with pressure chamber, and spool chamber, water outlet communicate with pressure chamber, and the top of spool chamber is fixed with gland with threaded hole, be provided with spool, spring, jacking block in the spool chamber successively, be provided with on the tapped hole that adjusting screw is spun on gland; The spool at passage place is provided with groove, and the groove top of spool is provided with seal groove, is furnished with seal ring on the seal groove, and spool bottom and spool chamber are suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201750989U CN201575207U (en) | 2009-12-31 | 2009-12-31 | Constant pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201750989U CN201575207U (en) | 2009-12-31 | 2009-12-31 | Constant pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201575207U true CN201575207U (en) | 2010-09-08 |
Family
ID=42695084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201750989U Expired - Fee Related CN201575207U (en) | 2009-12-31 | 2009-12-31 | Constant pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201575207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883040A (en) * | 2017-12-22 | 2018-04-06 | 上海南华换热器制造有限公司 | A kind of Pneumatic constant pressure valve |
| CN108443513A (en) * | 2018-04-17 | 2018-08-24 | 诸暨市海王消防设备有限公司 | A kind of motor-driven valve |
-
2009
- 2009-12-31 CN CN2009201750989U patent/CN201575207U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883040A (en) * | 2017-12-22 | 2018-04-06 | 上海南华换热器制造有限公司 | A kind of Pneumatic constant pressure valve |
| CN108443513A (en) * | 2018-04-17 | 2018-08-24 | 诸暨市海王消防设备有限公司 | A kind of motor-driven 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: 20100908 Termination date: 20121231 |