CN201180831Y - Adjustable pressure reducing valve - Google Patents
Adjustable pressure reducing valve Download PDFInfo
- Publication number
- CN201180831Y CN201180831Y CNU200820083711XU CN200820083711U CN201180831Y CN 201180831 Y CN201180831 Y CN 201180831Y CN U200820083711X U CNU200820083711X U CN U200820083711XU CN 200820083711 U CN200820083711 U CN 200820083711U CN 201180831 Y CN201180831 Y CN 201180831Y
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- Prior art keywords
- water
- inlet cavity
- valve
- valve body
- lower piston
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- Expired - Fee Related
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Abstract
The utility model provides an adjustable reducing valve, belongs to the valve technical field, and solves the problems of small automatic adjustment range and low sensitivity of the prior reducing valve. The adjustable reducing valve comprises a valve body with a water inlet cavity and a water outlet cavity, and a valve rod arranged in the valve body; a middle cavity is formed in the valve body between the water inlet cavity and the water outlet cavity; the water inlet cavity communicates with the water outlet cavity through the middle cavity; a sealing surface and a valve plug which can be sealed with the sealing surface are arranged in the middle cavity; the valve rod is moveably arranged in the water inlet cavity; one end of the valve rod penetrates the water inlet cavity and is fixedly connected with the valve plug; a lower piston is arranged in the water outlet cavity; the other end of the valve rod penetrates the water inlet cavity in the opposite direction and is fixedly connected with the lower piston; a spring is arranged at the lower part of the lower piston; one end of the spring pushes against the lower piston, and the other end thereof pushes against an adjustment mechanism which can adjust the elastic of the spring. The adjustable reducing valve has the advantages of simple structure, high sensitivity, and large application range.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of reduction valve, particularly a kind of adjustable compression release valve.
Background technique
On the pipeline of carrying liquid, particularly the aqueduct of tall building is the pressure of liquid in control and the equalizing main, needs equipped reduction valve usually.
Existing reduction valve such as Chinese patent application number provide a kind of " simple and easy reduction valve " for 200420045101.2, comprise valve gap and valve body, are provided with spool in the valve body, and the valve body middle part is provided with the big small sircle hole that joins up and down, and the spool bottom is provided with spring.The edge of big hole is provided with annular boss; The small sircle hole middle part is provided with annular groove, is provided with the ring-shaped rubber seal ring on outstanding small sircle hole surface in the groove.The valve body left and right sides is respectively equipped with water intake, and water intake is arranged on the valve body middle and lower part, and water outlet is arranged on the valve body middle and upper part.Spool one end is provided with spring seat, and the spool middle part is provided with round platform, and the bottom of round platform is provided with annular groove, is provided with the ring packing rubber ring in the groove.
Though this easy reduction valve can change the pressure adjust outlet automatically according to inlet pressure, because elastic force that can not Regulation spring, therefore, the scope of regulating is little automatically.Because the structural design of spool is unreasonable, can not well move up and down when variation in water pressure, sensitivity is on the low side.Also there is above-mentioned problem in the structure that other adjustable reduction valve is not also all regulated spring.
Summary of the invention
The purpose of this utility model is to have above-mentioned problem at existing adjustable compression release valve, and a kind of simple in structure, highly sensitive, adjustable compression release valve that Applicable scope is big is provided.
The purpose of this utility model can realize by following technical proposal: a kind of adjustable compression release valve, comprise valve body and be arranged on the interior valve rod of valve body with water-inlet cavity and water chamber, it is characterized in that, be provided with lumen in the valve body between described water-inlet cavity and the water chamber, water-inlet cavity and water chamber communicate by lumen, in lumen, be provided with sealing surface and can form the spool that seals with sealing surface, be arranged in the water-inlet cavity above-mentioned valve handle activity, the one end passes water-inlet cavity and spool is connected, in water chamber, be provided with lower piston, the other end of valve rod oppositely passes water-inlet cavity and above-mentioned lower piston is connected, bottom at lower piston is provided with spring, one end of spring withstands on the lower piston, the other end withstand on can the controlling mechanism of Regulation spring elastic force on.
After being connected to this adjustable compression release valve in the pipeline, when initial, under the effect of spring, lower piston promotes valve rod makes spool break away from sealing surface, and water-inlet cavity and water chamber are connected by lumen.When the hydraulic pressure of water-inlet cavity becomes big, be arranged on lower piston in the water chamber overcomes spring under the effect of hydraulic pressure elastic force, make spool close to sealing surface, thereby the opening of spool and sealing surface is reduced and control flow rate, adjust the pressure of water cavity, the pressure of water chamber keeps constant thereby the pressure in assurance pipe water chamber changes within the specific limits.If the pressure of water-inlet cavity and water chamber surpasses the regulation range of setting originally, spool can form sealing with sealing surface, reduction valve is reached end, thereby the protection lower part is not damaged.When needs change the pressure relief ranges of reduction valve, as long as come the elastic force of Regulation spring by controlling mechanism.
In above-mentioned adjustable compression release valve, described controlling mechanism comprises adjustment seat and the adjusting nut that is connected on the valve body, this adjusting nut is plugged on the port of adjustment seat and is connected by screw thread, and above-mentioned spring one end extend in the adjustment seat and withstands on the adjusting nut.Rotate adjusting nut, the spring that withstands on the adjusting nut can be compressed or oppositely elongation, and spring is adjusted to needed elastic force.
In above-mentioned adjustable compression release valve, be fixed with bonnet on the described valve body, on bonnet, be provided with pilot hole, above-mentioned spool is plugged in the pilot hole.The assembling that bonnet also makes things convenient for parts such as spool is set on valve body, simultaneously, spool is played leading role, prevent the swing of spool and valve rod.
In above-mentioned adjustable compression release valve, described spool is provided with convex shoulder, is fixed with the sealing gasket that can contact with sealing surface in the convex shoulder.Sealing gasket is set can spool and the sealing of sealing surface.
In above-mentioned adjustable compression release valve, the end that described valve rod and lower piston are connected is the lower end, is provided with seal ring between the chamber wall of this lower end and water-inlet cavity.Increase the sealing between water-inlet cavity and the water chamber, prevent the interference of water-inlet cavity simultaneously lower piston.
In above-mentioned adjustable compression release valve, has the shoulder block of limited piston stroke in the described valve body.Come the stroke of limited piston by shoulder block, thereby define the distance of separation of the maximum of spool and sealing surface.
Compared with prior art, this is fixed with lower piston in the lower end of valve rod, increases sensitivity by piston, on valve body, be provided for simultaneously the controlling mechanism of Regulation spring elastic force, increased the Applicable scope of adjustable compression release valve, controlling mechanism only is made up of adjustment seat and adjusting nut, and is simple in structure.
Description of drawings
Fig. 1 is the structural representation of this adjustable compression release valve when closing.
Structural representation when Fig. 1 is the unlatching of this adjustable compression release valve.
Among the figure, valve body 1, water-inlet cavity 11, chamber wall 11a, water chamber 12, lumen 13, passage 14, sealing surface 15, gasket seal 16, shoulder block 17, spool 2, convex shoulder 21, valve rod 3, lower end 31, lower piston 4, seal ring 5, spring 6, sealing gasket 7, adjustment seat 8, adjusting nut 9, bonnet 10, pilot hole 10a.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, this adjustable compression release valve comprises valve body 1, spool 2, valve rod 3, lower piston 4 and controlling mechanism, is used for stablizing the pressure in the water pipe.
Specifically, have water-inlet cavity 11 and water chamber 12 in this valve body 1, the chamber wall 11a of water-inlet cavity 11 extend into the middle part in the valve body 1, also is provided with lumen 13 in the valve body 1 between water-inlet cavity 11 and water chamber 12, and lumen 13 is positioned at wall 11a top, chamber and has passage 14 and communicates with lumen 13.In lumen 13, be provided with sealing surface 15, sealing surface 15 is arranged on 14 mouthfuls of places of passage, spool 2 is arranged in the lumen 13 and can forms sealing with sealing surface 15, spool 2 is column, on the outer side surface of spool 2, be provided with convex shoulder 21, in order to increase sealing, be embedded with sealing gasket 7 at convex shoulder 21 towards a side of sealing surface 15, when being pressed in sealing surface 15 with sealing gasket 7, can end by this reduction valve convex shoulder 21.Valve rod 3 is arranged in the water-inlet cavity 11 versatilely, passes water-inlet cavity 11 and spool 2 after an end of valve rod 3 extend in the passage 14 and is connected by screw thread, and the diameter of valve rod 3 in passage 14 is less than the aperture of passage 14; Water-inlet cavity 11 and water chamber 12 by in 13 chambeies communicate, lower piston 4 is arranged in the water chamber 12 and is in the wall 11a bottom, chamber of water-inlet cavity 11, the shoulder block 17 that in valve body 1, has restriction lower piston 4 strokes, the other end of valve rod 3 oppositely passes water-inlet cavity 11 and lower piston 4 and is connected by screw thread, in order to prevent the interference of 11 pairs of lower pistons 4 of water-inlet cavity, increase the sealing between water-inlet cavity 11 and the water chamber 12, valve rod 3 is lower end 31 with the end that lower piston 4 is connected, and is provided with seal ring 5 between the chamber wall 11a of this lower end 31 and water-inlet cavity 11.Be provided with spring 6 in the bottom of lower piston 4, an end of spring 6 withstands on the lower piston 4, the other end withstand on can the controlling mechanism of Regulation spring elastic force on.
Controlling mechanism comprises adjustment seat 8 and adjusting nut 9, adjustment seat 8 is tubular, it is by being threaded onto on the valve body 1 and being in the bottom of lower piston 4, valve body 1 and adjustment seat 8 are connected, lower piston 4 is in the form of annular discs, the middle part of its downside has locating column 41, spring one end is enclosed within outside the locating column 41, be provided with seal ring 5 between the peripheral edge of lower piston 4 and the valve body 1 and increase sealing, adjusting nut 9 is plugged on the port of adjustment seat 8 and is connected by screw thread, spring 6 one ends extend in the adjustment seat 8 and withstand on the adjusting nut 9, rotate adjusting nut 9, just can regulate needed elastic force.
Be fixed with bonnet 10 on the valve body 1, be provided with pilot hole 10a on bonnet 10, spool 2 is plugged among the pilot hole 10a, and spool 2 is played leading role, prevents spool 2 and valve rod 3 swings.In order to increase sealing, between bonnet 10 and valve body 1, gasket seal 16 is set.Also be provided with test port 18 on valve body 1, this test port 18 communicates with water chamber 12.This test port 18 is used to connect the pressure that pressure tests out water cavity 12.
After being connected to this adjustable compression release valve in the pipeline, when initial, under the effect of spring 6, lower piston 4 promotes valve rod 3 makes spool 2 break away from sealing surface 15, and water-inlet cavity 11 and water chamber 12 are connected by lumen 13.When the hydraulic pressure of water-inlet cavity 11 becomes big, be arranged on lower piston 4 in the water chamber 12 overcomes spring at the drop-down ovable valve stem 3 of the effect of hydraulic pressure elastic force, make spool 2 close, thereby the opening of spool 2 and sealing surface 15 is reduced and control flow rate, adjust the pressure of water cavity 12 to sealing surface 15; Thereby the pressure that guarantees pipe water chamber 11 changes within the specific limits and the pressure of water chamber 12 keeps constant.If water-inlet cavity 11 surpasses the regulation range of setting originally with the pressure of water chamber 12, spool 2 can form sealing with sealing surface 15, reduction valve is reached end, thereby the protection lower part is not damaged.When needs change the pressure relief ranges of reduction valve, as long as just can realize by rotating adjusting nut 9.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as shell valve body 1, water-inlet cavity 11, chamber wall 11a, water chamber 12, lumen 13, passage 14, sealing surface 15, spool 2, valve rod 3, lower end 31, lower piston 4, seal ring 5, spring 6, sealing gasket 7, adjustment seat 8, adjusting nut 9, bonnet 10, pilot hole 10a, gasket seal 16 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (6)
1, a kind of adjustable compression release valve, comprise the valve body (1) of have water-inlet cavity (11) and water chamber (12) and be arranged on valve rod (3) in the valve body (1), it is characterized in that, be provided with lumen (13) in the valve body (1) between described water-inlet cavity (11) and the water chamber (12), water-inlet cavity (11) and water chamber (12) communicate by lumen (13), in lumen (13), be provided with sealing surface (15) and can form the spool (2) that seals with sealing surface (15), above-mentioned valve rod (3) is arranged in the water-inlet cavity (11) versatilely, the one end passes water-inlet cavity (11) and is connected with spool (2), in water chamber (12), be provided with lower piston (4), the other end of valve rod (3) oppositely passes water-inlet cavity (11) and is connected with above-mentioned lower piston (4), be provided with spring (6) in the bottom of lower piston (4), one end of spring (6) withstands on the lower piston (4), the other end withstand on can the controlling mechanism of Regulation spring (6) elastic force on.
2, adjustable compression release valve according to claim 1, it is characterized in that, described controlling mechanism comprises adjustment seat (8) and the adjusting nut (9) that is connected on the valve body (1), this adjusting nut (9) is plugged on the port of adjustment seat (8) and is connected by screw thread, and above-mentioned spring (6) one ends extend in the adjustment seat (8) and withstand on the adjusting nut (9).
3, adjustable compression release valve according to claim 1 and 2 is characterized in that, is fixed with bonnet (10) on the described valve body (1), is provided with pilot hole (10a) on bonnet (10), and above-mentioned spool (2) is plugged in the pilot hole (10a).
4, adjustable compression release valve according to claim 1 and 2 is characterized in that, described spool (2) is provided with convex shoulder (21), is fixed with the sealing gasket (7) that can contact with sealing surface (15) in the convex shoulder (21).
5, adjustable compression release valve according to claim 1 and 2 is characterized in that, described valve rod (3) is lower end (31) with the end that lower piston (4) is connected, and is provided with seal ring (5) between the chamber wall (11a) of this lower end (31) and water-inlet cavity (11).
6, adjustable compression release valve according to claim 1 and 2 is characterized in that, has the shoulder block (17) of limited piston stroke in the described valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820083711XU CN201180831Y (en) | 2008-03-04 | 2008-03-04 | Adjustable pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820083711XU CN201180831Y (en) | 2008-03-04 | 2008-03-04 | Adjustable pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201180831Y true CN201180831Y (en) | 2009-01-14 |
Family
ID=40250331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820083711XU Expired - Fee Related CN201180831Y (en) | 2008-03-04 | 2008-03-04 | Adjustable pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201180831Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298890B (en) * | 2008-03-04 | 2012-01-04 | 浙江沃尔达铜业有限公司 | Adjustable compression release valve |
| CN103349508A (en) * | 2013-07-06 | 2013-10-16 | 佛山市顺德区科锐玛电器有限公司 | Coffee machine protection valve |
-
2008
- 2008-03-04 CN CNU200820083711XU patent/CN201180831Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298890B (en) * | 2008-03-04 | 2012-01-04 | 浙江沃尔达铜业有限公司 | Adjustable compression release valve |
| CN103349508A (en) * | 2013-07-06 | 2013-10-16 | 佛山市顺德区科锐玛电器有限公司 | Coffee machine protection valve |
| CN103349508B (en) * | 2013-07-06 | 2015-08-26 | 佛山市顺德区科锐玛电器有限公司 | Coffee machine protection valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG WORLD HVAC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: WOERDA COPPER INDUSTRY CO., LTD.;ZHEJIANG PROVINCE |
|
| CP03 | Change of name, title or address |
Address after: 317608, Zhejiang, Taizhou province Yuhuan County Lu Town Village Patentee after: Zhejiang world HVAC technology Co Ltd Address before: 317608 Industrial Zone, Yuhuan County, Zhejiang Province Patentee before: Zhejiang Woerda Copper Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20150304 |
|
| EXPY | Termination of patent right or utility model |