CN202937855U - Double-seal water escape valve with adjustable spring force - Google Patents
Double-seal water escape valve with adjustable spring force Download PDFInfo
- Publication number
- CN202937855U CN202937855U CN 201220689035 CN201220689035U CN202937855U CN 202937855 U CN202937855 U CN 202937855U CN 201220689035 CN201220689035 CN 201220689035 CN 201220689035 U CN201220689035 U CN 201220689035U CN 202937855 U CN202937855 U CN 202937855U
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- CN
- China
- Prior art keywords
- drain tank
- valve
- spring force
- drain
- water escape
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a double-seal water escape valve with adjustable spring force. The double-seal water escape valve with the spring force adjustment comprises a valve body, a lower cover, a water escape valve plate, a lower valve seat and a splash prevention cover, and further comprises a seal gasket, a water escape groove and an adjusting spring. The seal gasket is of a ring-shaped structure, and is clamped between the water escape valve plate and steps which serve as transition between a big cylinder of the water escape groove and a small cylinder of the water escape groove. An adjusting nut is arranged at the bottom of the lower valve seat, and is connected with a side wall of the lower valve seat through threads. The adjusting nut can change the depth of the lower valve seat through rotation, thereby changing pressure stressed by the adjusting spring. The double-seal water escape valve with the adjustable spring force has the advantages that due to the technical scheme, an O-shaped ring and the seal gasket are used for forming a double-seal effect from different positions, a dripping leakage phenomenon is well prevented, and due to the fact that the pressure stressed by the adjusting spring is adjustable, opening differential pressure of the water escape valve can be adjusted at will according to different working conditions.
Description
Technical field
The utility model relates to a kind of drain valve device, the drain valve device that especially relates to a kind of double seal and regulate with spring force.
Background technique
Drain valve, as the significant components of backflow preventer, is playing vital effect aspect anti-medium refluence.When normal water supply, drain valve should tightly not leak, and when refluence or import decompression occur, drain valve should be opened rapidly.But existing drain valve only adopts simple sealing means, and sealing effect does not pass a test, when normal water supply, also there is weeping in the backflow preventer drain valve, waste resource or affect the normal operation of system.And the starting differential pressure of general drain valve is certain, while using, easily cause opening inconvenience or drain valve leaks under different operating modes, be badly in need of now a kind of drain valve that can regulate starting differential pressure, good seal performance.
The model utility content
The purpose of this utility model is to provide a kind of simple in structure, safe and reliable double seal and the drain valve device of regulating with spring force.
The technical solution of the utility model is: a kind of double seal and the drain valve device of regulating with spring force, comprise valve body, lower cover, the sluicing valve plate, lower valve base and splash guard, described lower cover is fixed on described valve body below, described sluicing valve plate is positioned at described valve inner, and be positioned at described lower cover top, described lower valve base is with through hole, get lodged in the port of described lower cover, described splash guard is fixed on the port periphery of described lower cover, also comprise sealing gasket, drain tank and Regulation spring, described drain tank is formed by stacking by small one and large one concentric two cylinders, with central through bore, the first half of described drain tank is small column, stretch into and be fixed by nut from the circular hole of described sluicing valve plate below, described drain tank first half outer wall is provided with some grooves of the annular seal with rubber ring, the Lower Half of described drain tank is big column, and below is with cylinder shape groove, with central through bore, be communicated with, the Lower Half of described drain tank stretches in described lower valve base, one end of described Regulation spring is fixed on the bottom of described lower valve base, the other end is fixed on the Lower Half cylinder shape groove bottom of drain tank, described sealing gasket is structure ringwise, be stuck between the step of large small column transition of described sluicing valve plate and described drain tank, the bottom of described lower valve base is for reconciling locknut, by screw thread, with the sidewall of described lower valve base, be connected, can change by rotation the depth of described lower valve base, thereby change described Regulation spring pressure.
Preferably, described drain tank together with the outer surface of described lower valve base port contact is provided with or the bipassage ring connected in star, is provided with O shape circle in annular groove.
Preferably, described sealing gasket upper and lower surface is with circular protrusion, and described sluicing valve plate lower surface and described drain tank step are provided with the hollow slot corresponding with described sealing gasket ring-type projection.
Preferably, the Lower Half cylinder shape groove edge of described drain tank, with three or four rectangular breach, makes the Lower Half of described drain tank be three or four claw type structures.
Preferably, the Lower Half cylinder shape groove sidewall of described drain tank is with some through holes.
Preferably, be distributed with some water ports on described conciliation locknut.
Preferably, be lined with packing ring between described conciliation locknut and described Regulation spring.
Advantage and the good effect that the utlity model has are:
Owing to adopting technique scheme, adopt described O shape circle and sealing gasket to form the double seal effect from diverse location, can prevent well weeping, assurance resource or affect the normal operation of system.The Regulation spring pressure is adjustable, just can arbitrarily regulate the starting differential pressure of drain valve according to different operating modes, meets the demand of different operating modes.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure:
1, valve body 2, lower cover 3, sluicing valve plate 4, sealing gasket
5, lower valve base 6, drain tank 7, Regulation spring 8, O shape circle
9, splash guard 10, conciliation locknut
Embodiment
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises valve body 1, lower cover 2, sluicing valve plate 3, lower valve base 5 and splash guard 9, described lower cover 2 is fixed on described valve body 1 below, described sluicing valve plate 3 is positioned at described valve body 1 inside, and be positioned at described lower cover 2 tops, described lower valve base 5 is with through hole, get lodged in the port of described lower cover 2, described splash guard 9 is fixed on the port periphery of described lower cover 2, also comprise sealing gasket 4, drain tank 6 and Regulation spring 7, described drain tank 6 is formed by stacking by small one and large one concentric two cylinders, with central through bore, the first half of described drain tank 6 is small column, stretch into and be fixed by nut from the circular hole of described sluicing valve plate 3 belows, described drain tank 6 first half outer walls are provided with some grooves of the annular seal with rubber ring, the Lower Half of described drain tank 6 is big column, and below is with the cylinder shape groove bottom, with central through bore, be communicated with, the Lower Half cylinder shape groove edge of described drain tank 6 is with three rectangular breach, make the Lower Half of described drain tank 6 be three claw type structures.The Lower Half of described drain tank 6 stretches in described lower valve base 5, described drain tank 6 is annular groove together with the outer surface of described lower valve base 5 port contacts is provided with, be provided with O shape circle 8 in annular recess, one end of described Regulation spring 7 is fixed on the bottom of described lower valve base 5, the other end is fixed on the Lower Half cylinder shape groove of drain tank 6, described sealing gasket 4 is structure ringwise, be stuck between the step of large small column transition of described sluicing valve plate 3 and described drain tank 6, described sealing gasket 4 upper and lower surfaces are with circular protrusion, described sluicing valve plate 3 lower surfaces and described drain tank 6 steps are provided with the hollow slot corresponding with described sealing gasket 4 circular protrusions.The bottom of described lower valve base (5) is for reconciling locknut (10), by screw thread, with the sidewall of described lower valve base (5), be connected, can change by rotation the depth of described lower valve base (5), thereby change described Regulation spring (7) pressure, be distributed with some water ports on described conciliation locknut (10), between described conciliation locknut (10) and described Regulation spring (7), be lined with packing ring.
During use, described O shape circle 8 and sealing gasket 4 form the double seal effect from diverse location, can prevent well the seepage of sealing.The Regulation spring pressure is adjustable, just can arbitrarily regulate the starting differential pressure of drain valve according to different operating modes, meets the demand of different operating modes.
Above embodiment has been described in detail the utility model, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (7)
1. a double seal and the drain valve device regulated with spring force, comprise valve body (1), lower cover (2), sluicing valve plate (3), lower valve base (5) and splash guard (9), described lower cover (2) is fixed on described valve body (1) below, described sluicing valve plate (3) is positioned at described valve body (1) inside, and be positioned at described lower cover (2) top, described lower valve base (5) is with through hole, get lodged in the port of described lower cover (2), described splash guard (9) is fixed on the port periphery of described lower cover (2), it is characterized in that: also comprise sealing gasket (4), drain tank (6) and Regulation spring (7), described drain tank (6) is formed by stacking by small one and large one concentric two cylinders, with central through bore, the first half of described drain tank (6) is small column, stretch into and be fixed by nut from the circular hole of described sluicing valve plate (3) below, described drain tank (6) first half outer wall is provided with some grooves of the annular seal with rubber ring, the Lower Half of described drain tank (6) is big column, and below is with cylinder shape groove, with central through bore, be communicated with, the Lower Half of described drain tank (6) stretches in described lower valve base (5), one end of described Regulation spring (7) is fixed on the bottom of described lower valve base (5), the other end is fixed on the Lower Half cylinder shape groove bottom of drain tank (6), described sealing gasket (4) is structure ringwise, be stuck between the step of large small column transition of described sluicing valve plate (3) and described drain tank (6), the bottom of described lower valve base (5) is for reconciling locknut (10), by screw thread, with the sidewall of described lower valve base (5), be connected, can change by rotation the depth of described lower valve base (5), thereby change described Regulation spring (7) pressure.
2. double seal according to claim 1 and the drain valve device regulated with spring force, it is characterized in that: the outer surface of described drain tank (6) and described lower valve base (5) port contact is provided with together or the bipassage ring connected in star, is provided with O shape in annular groove and encloses (8).
3. double seal according to claim 1 and 2 and the drain valve device regulated with spring force, it is characterized in that: described sealing gasket (4) upper and lower surface is with circular protrusion, and described sluicing valve plate (3) lower surface and described drain tank (6) step are provided with the hollow slot corresponding with described sealing gasket (4) circular protrusion.
4. double seal according to claim 1 and 2 and the drain valve device regulated with spring force, it is characterized in that: the Lower Half cylinder shape groove edge of described drain tank (6), with three or four rectangular breach, makes the Lower Half of described drain tank (6) be three or four claw type structures.
5. double seal according to claim 1 and 2 and the drain valve device regulated with spring force, it is characterized in that: the Lower Half cylinder shape groove sidewall of described drain tank (6) is with some through holes.
6. double seal according to claim 1 and with the drain valve device that spring force is regulated, is characterized in that: on described conciliation locknut (10), be distributed with some water ports.
7. according to the described double seal of claim 1 or 6 and with the drain valve device that spring force is regulated, it is characterized in that: between described conciliation locknut (10) and described Regulation spring (7), be lined with packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689035 CN202937855U (en) | 2012-12-11 | 2012-12-11 | Double-seal water escape valve with adjustable spring force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689035 CN202937855U (en) | 2012-12-11 | 2012-12-11 | Double-seal water escape valve with adjustable spring force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937855U true CN202937855U (en) | 2013-05-15 |
Family
ID=48322093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220689035 Withdrawn - After Issue CN202937855U (en) | 2012-12-11 | 2012-12-11 | Double-seal water escape valve with adjustable spring force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115173A (en) * | 2012-12-11 | 2013-05-22 | 天津市国威给排水设备制造有限公司 | Double seal water escape device with spring force regulation |
-
2012
- 2012-12-11 CN CN 201220689035 patent/CN202937855U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115173A (en) * | 2012-12-11 | 2013-05-22 | 天津市国威给排水设备制造有限公司 | Double seal water escape device with spring force regulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130515 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |