CN201731134U - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN201731134U CN201731134U CN2010202503021U CN201020250302U CN201731134U CN 201731134 U CN201731134 U CN 201731134U CN 2010202503021 U CN2010202503021 U CN 2010202503021U CN 201020250302 U CN201020250302 U CN 201020250302U CN 201731134 U CN201731134 U CN 201731134U
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- Prior art keywords
- valve
- spool
- valve body
- pressure
- valve core
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- 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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- Fluid-Driven Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model provides a pressure reducing valve, which belongs to the technical field of valves and solves the problems that the existing pressure reducing valve has short service life, and a valve core can not be changed. The pressure reducing valve comprises a valve body provided with a water inlet and a water outlet, a valve core seat is also arranged in the valve body, a valve clack component is arranged in the valve body, a valve core is arranged in the valve core seat, the valve clack component can move up and down along the valve core under the effect of a pressure adjusting component, and a water passing channel which can change water flux density when the valve clack component moves up and down is formed between the valve clack component and the valve core. The valve core and the valve body of the pressure reducing valve are in a split mode, the valve core is made of materials with good quality and can be directly changed after being worn under long-term use, the problem that the whole valve body needs to be changed after the valve core is broken is avoided, and the service life of the pressure reducing valve is greatly prolonged.
Description
Technical field
The utility model belongs to valve technology field, relates to the constant-voltage equipment on a kind of supply channel, particularly a kind of reduction valve.
Background technique
Reduction valve is that a kind of medium self-energy that utilizes is regulated intelligent type valve with pilot line pressure.Be used for domestic water, fire supply and other industrial water supply systems, self regulating action by reduction valve, make the pipeline outlet pressure not change because of the variation of inlet pressure, inlet flow rate, safely and reliably outlet pressure is maintained on the setting value, and can regulate the purpose that setting value reaches decompression as required.From hydromechanical viewpoint, reduction valve is a throttle element that local resistance can change, and promptly by changing orifice size, flow velocity and kinetic energy is changed, and causes the different pressure losses, thereby reaches the purpose of decompression.
Chinese patent (publication number CN201190823Y) discloses a kind of structure improved reduction valve, it comprises the valve body with water intake and water outlet, in valve body, be provided with valve core case, mangetic core assembly (being equivalent to the flap assembly among the application) is housed in the valve core case, be provided with the water channel of crossing that when mangetic core assembly is mobile in valve core case, can change flux between mangetic core assembly and the valve core case, offering the pressure modulating opening that is positioned at above the valve core case on the valve body, the pressure regulation assembly that acts on the mangetic core assembly is housed in pressure modulating opening.Drive mangetic core assembly by the pressure regulation assembly and move up and down,, thereby reach the purpose of keeping the waterexit end constant pressure with the size of change water flux density along valve core case.
Yet valve core case in the above-mentioned patent and valve body are integral type, and mangetic core assembly will certainly cause the valve core case inter deterioration along moving in the valve core case for a long time, thereby influences the sealing of valve core case, has influenced the normal use of reduction valve.Be to increase the working life of valve core case, valve core case must be through Overheating Treatment, and is the valve core case processing trouble of integral type with valve body, so can not get its working life guaranteeing.Must the integral replacing valve body after wearing and tearing appear in valve core case, cause the serious waste of valve body material.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, and having proposed a kind of spool and valve body is split type reduction valve, and spool is installed in the valve body, and is conveniently replaced after the spool wearing and tearing.
The purpose of this utility model can realize by following technical proposal: a kind of reduction valve, comprise valve body with water intake and water outlet, also has a valve core case in the described valve body, be provided with a flap assembly in the described valve body, it is characterized in that, be provided with a spool in the described valve core case, described flap assembly can move up and down along spool under the effect of a pressure regulation assembly, forms a water channel of crossing that can change water flux density when the flap assembly moves up and down between described flap assembly and the spool.
Reduction valve induces the pressure at the mouth of a river by the pressure regulation assembly, and controls moving up and down of flap assembly, changes water flux density, to keep the water outlet constant pressure.When water outlet pressure is big, move on the flap assembly, the flow of crossing water channel reduces, and water outlet pressure diminishes; Otherwise, when water outlet pressure hour, the flap assembly moves down, the flux of crossing water channel increases, water outlet pressure increases.
This reduction valve is provided with a spool in its valve core case, make the flap assembly move up and down along spool, reaches the change water flux density, keeps the purpose of water outlet pressure.Because spool is installed on the valve core case, the flap assembly acts on the spool, for guaranteeing the spool life-span, can adopt the higher spool of durability degree, and spool can directly be changed spool when damaging, the defective that valve core case working life of having avoided the flap assembly to directly act on bringing on the valve core case is short, can not change separately.
In above-mentioned a kind of reduction valve, described valve body is provided with the valve gap that is threaded with valve body, and described valve gap roof pressure is on a pressure ring, and the described spool outside has annular convex shoulder, and described annular convex shoulder is fixed between valve core case and the pressure ring.By valve gap and valve core case spool is fixed, spool can adopt ceramic valve core, long service life, and when spool wore and tore, only need pull down valve gap can change spool easily.
In above-mentioned a kind of reduction valve, described flap assembly comprises connecting rod and flap, and described connecting rod is in spool, and connecting rod one end and flap are connected, the other end is connected on the above-mentioned pressure regulation assembly, and the end of described flap and spool forms the above-mentioned water channel of crossing.Connecting rod passes spool and flap is connected, and under the effect of pressure regulation assembly, connecting rod can move up and down, and the drive flap moves, thereby changes the water flux density size of water channel.
In above-mentioned a kind of reduction valve, have a seal section on the described connecting rod, described seal section is resisted against the spool inwall, is provided with between described seal section and the spool to make connecting rod seal section in the process of sliding up and down keep the Sealing of sealing all the time with spool.
Seal section can slide up and down along the inwall of spool, and remains sealing in the sliding process.Flap is divided into water-inlet cavity and water chamber with valve body, the lower end of seal section and spool, valve core case, flap and water intake form above-mentioned water-inlet cavity, the upper end of seal section is a pressure regulating cavity, pressure regulating cavity communicates with water chamber, thereby by responding to the pressure reduction of feed-water end and waterexit end, the position of adjustable sealing section, thereby the aperture of regulating flap, reach the flux purpose of regulating water channel, keep the water chamber constant pressure.
In above-mentioned a kind of reduction valve, be provided with between described valve core case and the spool and can make both keep the seal ring that seals.
In above-mentioned a kind of reduction valve, described pressure regulation assembly comprises diaphragm and spring, described spring one end roof pressure is on diaphragm, the other end roof pressure is on the spring seat that is arranged at valve gap the inner, described diaphragm and above-mentioned connecting rod are fixed together, and form a pressure regulating cavity between diaphragm and valve body, spool and the above-mentioned seal section, described valve body is provided with the regulator hole that pressure regulating cavity is communicated with water outlet.
Be tightly connected between diaphragm and the valve body, water chamber communicates with pressure regulating cavity, if the hydraulic pressure of waterexit end is identical with the pressure size of spring, then the diaphragm position is motionless, if water chamber pressure is bigger, then hydraulic pressure overcomes spring pressure diaphragm is moved up, and moves on drivening rod and the flap, reduced the water flux density of water channel, to reduce the pressure of water chamber; Otherwise if water chamber pressure is less, spring pressure is bigger, and then diaphragm moves down, and drivening rod and flap move down, and increases water flux density, thereby increases water chamber pressure; By moving of diaphragm, make the pressure of water chamber maintain in the constant scope.
In above-mentioned a kind of reduction valve, described valve gap end is provided with a Cock screw, and the end roof pressure of described Cock screw is on spring seat.The position of the length of installation adjustable springs seat by regulating Cock screw, thus the elastic force size of Regulation spring reaches the purpose that adjusts water cavity pressure.
In above-mentioned a kind of reduction valve, described valve body bottom has the through hole that communicates with valve inner, and described through hole is provided with the bottom that is connected with valve seal.
In above-mentioned a kind of reduction valve, be provided with filter screen between described valve core case and the spool.Current are provided with filter screen by flow through valve core case and enter spool of water intake between valve core case and spool, prevent that impurity in the fluid from entering reduction valve and causing inner chamber to pollute, stop up and damage spool.
Compared with prior art, spool of this reduction valve and valve body are split type, and spool can adopt comparatively the material of high-quality to make, and spool can directly changed after the wearing and tearing under long-term the use, problem that must the integral replacing valve body after having avoided spool to damage has increased working life of reduction valve greatly.
Description of drawings
Fig. 1 is the sectional structure schematic representation of this reduction valve.
Among the figure, 1, valve body; 11, water intake; 12, water outlet; 13, valve core case; 14, regulator hole; 15, bottom; 16, groove; 1a, water-inlet cavity; 1b, water chamber; 1c, pressure regulating cavity; 2, spool; 21, annular convex shoulder; 22, seal ring; 23, filter screen; 3, connecting rod; 31, seal section; 32, nut; 4, flap; 5, cross water channel; 6, valve gap; 7, pressure ring; 8, diaphragm; 9, spring; 91, spring seat; 92, Cock screw.
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 described in Figure 1, this reduction valve comprises the valve body 1 with water intake 11 and water outlet 12, also has a valve core case 13 in the valve body 1, be provided with a spool 2 in the valve core case 13, also be provided with connecting rod 3 and flap 4 in the valve body 1, connecting rod 3 is in spool 2, connecting rod 3 one ends and flap 4 are connected, the other end is connected on the pressure regulation assembly, connecting rod 3 can move up and down along spool 2 under the effect of pressure regulation assembly, drives flap 4 simultaneously and moves up and down, and flap 4 is crossed water channel 5 with the end formation one of spool 2, when flap 4 moved up and down, the water flux density of crossing water channel 5 also changed thereupon.
Valve body 1 upper end screw thread is connected with a valve gap 6, valve gap 6 roof pressures are on a pressure ring 7, spool 2 outsides have an annular convex shoulder 21, when spool 2 is installed on the valve core case 13, the one side of annular convex shoulder 21 is positioned on the valve core case 13, the another side roof pressure is on pressure ring 7, thereby spool 2 is fixed between valve core case 13 and the pressure ring 7 by annular convex shoulder 21, pulls down valve gap 6 and takes out pressure ring 7 and both spool 2 can be taken out.Be provided with between spool 2 and the valve core case 13 and can make both keep the seal ring 22 that seals.
Have a seal section 31 on the connecting rod 3, seal section 31 is resisted against spool 2 inwalls, is provided with between seal section 31 and the spool 2 to make connecting rod 3 seal section 31 in the process of sliding up and down keep the Sealing of sealing with spool 2 all the time.Flap 4 is divided into water-inlet cavity 1a and water chamber 1b with valve body 1, the lower end of seal section 31 and spool 2, valve core case 13, flap 4 and water intake 11 form above-mentioned water-inlet cavity 1a, the upper end of seal section 31 is pressure regulating cavity 1c, pressure regulating cavity 1c communicates with water chamber 1b, thereby valve body 1 is divided into water-inlet cavity 1a and pressure regulating cavity 1c by seal section 31, aperture by Induction Regulation chamber 1c internal pressure is regulated flap 4 reaches the water flux density purpose of regulating water channel 5, keeps water chamber 1b constant pressure.
The pressure regulation assembly comprises diaphragm 8 and spring 9, spring 9 one end roof pressures are on diaphragm 8, the other end roof pressure is on the spring seat 91 that is arranged at valve gap 6 the inners, diaphragm 8 is tightly connected with valve body 1, form pressure regulating cavity 1c between diaphragm 8 and valve body 1, spool 2 and the seal section 31, valve body 1 is provided with the regulator hole 14 that pressure regulating cavity 1c is communicated with water outlet 12.If the hydraulic pressure of waterexit end is identical with the pressure size of spring 9, then diaphragm 8 positions are motionless; If water chamber 1b pressure is bigger, then hydraulic pressure overcomes spring 9 pressure diaphragm 8 is moved up, and moves on drivening rod 3 and the flap 4, reduces the water flux density of water channel 5, to reduce the pressure of water chamber 1b; Otherwise if water chamber 1b pressure is less, spring 9 pressure are bigger, and then diaphragm 8 moves down, and drivening rod 3 and flap 4 move down, and increase water flux density, thereby increase water chamber 1b pressure; By moving of diaphragm 8, make the pressure of water chamber 1b maintain in the constant scope.Valve gap 6 ends are provided with a Cock screw 92, the end roof pressure of Cock screw 92 is on spring seat 91, the position of the length of installation adjustable springs seat 91 by regulating Cock screw 92, thus the elastic force size of Regulation spring 9 reaches the purpose that adjusts water cavity 1b initial setting pressure.
The end of connecting rod 3 has outside thread, and connecting rod 3 passes flap 4 and is connected with the nut 32 of the other end.For preventing that nut 32 and valve body 1 bottom from bumping, valve body 1 bottom is positioned at nut 32 belows and has the through hole that communicates with valve body 1 inside, the through hole is provided with the bottom 15 that is tightly connected with valve body 1, have the groove of placing for nut 32 16 on the bottom 15, nut 32 can be positioned at this groove 16 when flap 4 moved down.
Current are by flow through valve core case 13 and enter spool 2 of water intake 11, and this reduction valve is provided with filter screen 23 between its valve core case 13 and spool 2, prevent that impurity in the fluid from entering reduction valve and causing inner chamber to pollute, stop up and damage spool 2.
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.
Claims (9)
1. reduction valve, the valve body (1) that comprises have water intake (11) and water outlet (12), also has a valve core case (13) in the described valve body (1), be provided with a flap assembly in the described valve body (1), it is characterized in that, be provided with a spool (2) in the described valve core case (13), described flap assembly can move up and down along spool (2) under the effect of a pressure regulation assembly, forms a water channel (5) excessively that can change water flux density when the flap assembly moves up and down between described flap assembly and the spool (2).
2. reduction valve according to claim 1, it is characterized in that, described valve body (1) is provided with the valve gap (6) that is threaded with valve body (1), described valve gap (6) roof pressure is on a pressure ring (7), described spool (2) outside has annular convex shoulder (21), and described annular convex shoulder (21) is fixed between valve core case (13) and the pressure ring (7).
3. reduction valve according to claim 1 and 2, it is characterized in that, described flap assembly comprises connecting rod (3) and flap (4), described connecting rod (3) is in spool (2), connecting rod (3) one ends and flap (4) are connected, the other end is connected on the above-mentioned pressure regulation assembly, and described flap (4) forms above-mentioned water channel (5) excessively with the end of spool (2).
4. reduction valve according to claim 3, it is characterized in that, has a seal section (31) on the described connecting rod (3), described seal section (31) is resisted against spool (2) inwall, is provided with between described seal section (31) and the spool (2) to make connecting rod (3) seal section (31) in the process of sliding up and down keep the Sealing of sealing all the time with spool (2).
5. reduction valve according to claim 1 and 2 is characterized in that, is provided with between described valve core case (13) and the spool (2) to make both keep the seal ring (22) that seals.
6. reduction valve according to claim 1 and 2, it is characterized in that, described pressure regulation assembly comprises diaphragm and spring (9), described spring (9) one end roof pressures are on diaphragm, the other end roof pressure is being arranged on the inner spring seat (91) of valve gap (6), described diaphragm and above-mentioned connecting rod (3) are fixed together, and form a pressure regulating cavity (1c) between diaphragm and valve body (1), spool (2) and the above-mentioned seal section (31), described valve body (1) is provided with the regulator hole (14) that pressure regulating cavity (1c) is communicated with water outlet (12).
7. reduction valve according to claim 6 is characterized in that, described valve gap (6) end is provided with a Cock screw (92), and the end roof pressure of described Cock screw (92) is on spring seat (91).
8. reduction valve according to claim 1 and 2 is characterized in that, described valve body (1) bottom has the through hole that communicates with valve body (1) inside, and described through hole is provided with the bottom (15) that is tightly connected with valve body (1).
9. reduction valve according to claim 1 and 2 is characterized in that, is provided with filter screen (23) between described valve core case (13) and the spool (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202503021U CN201731134U (en) | 2010-07-07 | 2010-07-07 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202503021U CN201731134U (en) | 2010-07-07 | 2010-07-07 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201731134U true CN201731134U (en) | 2011-02-02 |
Family
ID=43522291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202503021U Expired - Fee Related CN201731134U (en) | 2010-07-07 | 2010-07-07 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201731134U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565463A (en) * | 2015-01-05 | 2015-04-29 | 宁波耀峰液压电器有限公司 | Pressure regulating valve |
| CN108518525A (en) * | 2018-04-13 | 2018-09-11 | 捷锐企业(上海)有限公司 | A kind of heat dissipation type pressure reducing valve |
| CN113217648A (en) * | 2021-04-22 | 2021-08-06 | 中船黄埔文冲船舶有限公司 | Marine sea valve |
-
2010
- 2010-07-07 CN CN2010202503021U patent/CN201731134U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565463A (en) * | 2015-01-05 | 2015-04-29 | 宁波耀峰液压电器有限公司 | Pressure regulating valve |
| CN108518525A (en) * | 2018-04-13 | 2018-09-11 | 捷锐企业(上海)有限公司 | A kind of heat dissipation type pressure reducing valve |
| CN108518525B (en) * | 2018-04-13 | 2020-03-27 | 捷锐企业(上海)有限公司 | Heat dissipation formula relief pressure valve |
| CN113217648A (en) * | 2021-04-22 | 2021-08-06 | 中船黄埔文冲船舶有限公司 | Marine sea valve |
| CN113217648B (en) * | 2021-04-22 | 2023-05-30 | 中船黄埔文冲船舶有限公司 | Marine sea valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20190707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |