CN204114265U - With the reduction valve of stop valve - Google Patents
With the reduction valve of stop valve Download PDFInfo
- Publication number
- CN204114265U CN204114265U CN201420553493.7U CN201420553493U CN204114265U CN 204114265 U CN204114265 U CN 204114265U CN 201420553493 U CN201420553493 U CN 201420553493U CN 204114265 U CN204114265 U CN 204114265U
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- Prior art keywords
- valve
- sleeve
- hole
- push rod
- cylinder
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- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of reduction valve with stop valve, there is valve body, valve rod, bottom flange, enter at valve body, transverse partition is provided with between water outlet, transverse partition has vertical through hole, valve rod passes from vertical through hole, it is characterized in that: below the vertical through hole of transverse partition, be provided with stop valve, in described vertical through hole, valve seat is installed, the sleeve coordinated with valve seat is had below described valve seat, guiding valve is provided with in described sleeve, small sleeve is provided with below described sleeve, push rod is equipped with in described small sleeve endoporus, described push rod is through bottom flange center hole, described valve rod, valve seat, sleeve, guiding valve, push rod has same center line.The utility model is provided with a stop valve in the bottom of reduction valve inner chamber, and flap adopts floating structure, thus prevents water-inlet cavity high pressure water from leaking to water chamber, and avoids sealing gasket and be damaged because stop valve closing forces is uncontrollable.
Description
Technical field
The utility model relates to a kind of reduction valve, especially relates to a kind of reduction valve with stop valve.
Background technique
From the working principle of common reduction valve, when downstream does not need water, valve port is closed.If downstream does not need the time of water shorter, so water chamber still can keep the pressure P 2 of setting; If do not need the time of water longer, sealing force so often due to flap and valve seat is large not, the high pressure water of snout cavity is leaked to water chamber by valve port, causes the hydraulic pressure of outlet plenum to raise, even reach the hydraulic pressure of snout cavity, cause damage to upstream device or pipeline.
Summary of the invention
The utility model mainly solves the deficiency existing for prior art, thus exploitation is a kind of when the downstream long period does not need water, stop valve can be closed, the reduction valve of the band stop valve preventing water-inlet cavity high pressure water from leaking to water chamber;
Another object of the present utility model avoids sealing gasket to be damaged because stop valve closing forces is uncontrollable;
3rd object of the present utility model prevents valve insertion from producing ultrahigh pressure, thus prevent valve body from breaking.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of reduction valve with stop valve, there is valve body, valve rod, bottom flange, transverse partition is provided with between valve body entery and delivery port, transverse partition has vertical through hole, valve rod passes from vertical through hole, it is characterized in that:
Stop valve is provided with below the vertical through hole of transverse partition;
Be provided with valve seat in described vertical through hole, have the sleeve coordinated with valve seat below described valve seat, be provided with guiding valve in described sleeve, be provided with small sleeve below described sleeve, be equipped with push rod in described small sleeve endoporus, described push rod is through bottom flange center hole;
Described valve rod, valve seat, sleeve, guiding valve, push rod have same center line.
The technical solution of the utility model can also be perfect further:
As preferably, described valve seat screws with outside thread and seam and is positioned in the vertical through hole of the transverse partition of valve body, and there is through hole at its center; The internal diameter of valve seat lower end surface is provided with the outstanding annular of the valve seat as valve port sword limit, and external diameter is provided with valve seat ring surface.
As preferably, described sleeve is one have end cylinder, the annular end face of nozzle is the sleeve confined planes coordinated with valve seat ring surface, and endoporus is a cylinder barrel, and the central authorities at the bottom of cylinder are provided with boss, boss is provided with center screw, the outside thread spiro of described center screw and valve rod lower end, the excircle at the bottom of cylinder is drilled with several holes, and under cylinder, face is connected with a small sleeve, the endoporus of described small sleeve and push rod upper end cylinder are slided and are joined, and the root of small sleeve is provided with several radial holes.
As preferably, described guiding valve profile is a stepped shaft cylinder, slidingly fits in the cylinder barrel of sleeve, and cylndrical surface, large footpath is provided with some longitudinal straight troughs, and spacing by the bulge loop on axostylus axostyle under valve rod; There is single order trapezoidal hole at its center, and the lower axostylus axostyle of the central through bore that diameter is less and valve rod is sliding joins, and when closing for preventing valve port, medium leaks from snout cavity to outlet plenum, is provided with O-ring seals one in central through bore; The upper-end surface of path cylinder is provided with groove, inside establishes sealing gasket, as the flap of valve port.
At the bottom of the hole of sleeve, be provided with spring between groove and the pit of guiding valve, described spring has certain pretightening force after mounting.
As preferably, its upper end of push rod is sliding cylinder of joining with the endoporus of small sleeve, and be provided with back-up ring, in order to place restrictions on bottom when push rod moves, outside thread in the middle part of the push rod internal thread corresponding to bottom flange top screws, the directional post of push rod hypomere and the pilot hole of bottom flange bottom are slided and are joined, and have O-ring seals two to prevent medium from leaking; Push rod underpart is fixed with handwheel, and rotate handwheel, push rod can move up and down along the vertical center line of reduction valve.
The beneficial effects of the utility model are:
1, be provided with a stop valve in the bottom of reduction valve inner chamber, when the downstream long period does not need water, stop valve can be closed, prevent water-inlet cavity high pressure water from leaking to water chamber;
2, flap adopts floating structure, avoids sealing gasket and is damaged because stop valve closing forces is uncontrollable;
3, floating structure can also prevent valve insertion from producing ultrahigh pressure, thus prevents valve body from breaking.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is Fig. 1 valve port stop valve enlarged views when opening;
Stop valve enlarged view when accompanying drawing 3 is the closedowns of Fig. 1 valve port.
Description of reference numerals: 1, valve rod, 2, valve seat, 3, transverse partition, 4, sealing gasket, 5, O-ring seals one, 6, guiding valve, 7, spring, 8, sleeve, 9, push rod, 10, back-up ring, 11, valve body, 12, bottom flange, 13, O-ring seals two, 14 handwheel;
A, annular sword limit, b, valve seat ring surface, c, sleeve confined planes, outer stomidium at the bottom of d, cylinder, e, valve seat central through bore, f, longitudinal straight trough, g, bulge loop, h, radial hole;
A, snout cavity, B, outlet plenum, P1, inlet pressure, P2, outlet pressure, V, valve port.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
The position of stop valve in reduction valve as shown in Figure 1; Fig. 2 is the enlarged view of valve port V stop valve when opening.
The structure of common reduction valve and working principle as everyone knows, no longer repeat here.
Stop valve of the present utility model is made up of parts such as valve rod 1, valve seat 2, valve body 11, across bulkhead 3, sealing gasket 4, O-ring seals 1, guiding valve 6, spring 7, sleeve 8, push rod 9, back-up ring 10, bottom flange 12, O-ring seals 2 13, handwheels 14.Sleeve 8 is one have end sleeve, the annular end face of nozzle is sleeve confined planes c, endoporus is a cylinder barrel, the central authorities at the cylinder end are provided with boss, the outside thread spiro of the center screw on boss and valve rod 1 lower end, the outer end at the bottom of cylinder is drilled with several apertures d, and under cylinder, face is connected with a small sleeve, the endoporus of small sleeve and the cylinder of push rod 9 upper end are slided and are joined, and the root of small sleeve is provided with two small sleeve root aperture h.
The profile of guiding valve 6 is a stepped shaft cylinder, and cylndrical surface, large footpath is provided with some longitudinal straight trough f, slides and fits in the cylinder barrel of sleeve 8, can freely move up and down wherein, and spacing by the bulge loop g on valve rod 1 time axostylus axostyle; There is single order trapezoidal hole at its center, and the lower axostylus axostyle of the central through bore that diameter is less and valve rod 1 is sliding joins, and when closing to prevent valve port V, medium converges from A chamber to B chamber and leaks, and is provided with O-ring seals 1 in central through bore; The upper-end surface of path cylinder is provided with groove, inside establishes sealing gasket 4, as the flap of valve port V, and prevents it from coming off from groove by bulge loop g.
At the bottom of the hole of sleeve 8 groove and guiding valve 6 pit between be provided with spring 7, spring 7 has certain pretightening force after mounting, and therefore, when valve port V opens, the upper-end surface of guiding valve 6 leans against on the lower end surface of bulge loop g all the time.
Valve seat 2 screws with outside thread and seam and is positioned in the vertical through hole of across bulkhead 3 of valve body 11, and there is valve seat central through bore e at its center, and there is annular sword limit a lower end surface as the valve seat of valve port V, and has the valve seat ring surface b corresponding with sleeve confined planes c.
Push rod 9 top is a cylinder, join with the endoporus of small sleeve is sliding, back-up ring 10 below it is in order to place restrictions on bottom when push rod 9 moves, the internal thread that the outside thread of push rod 9 middle and upper part is corresponding to bottom flange 12 top screws, and the directional post of push rod 9 hypomere and the pilot hole of bottom flange 12 bottom are slided and joined, and have O-ring seals 2 13 to prevent medium from leaking, push rod 9 underpart is fixed with handwheel 14, therefore, rotate handwheel 14, push rod 9 can move up and down along the vertical center line of reduction valve.
The center line of above-mentioned each part, the center line of two vertical through hole upper and lower with valve body 11 is consistent after mounting, and intersects vertically with the horizontal center line of paddle hole.
Working principle of the present utility model
Under service position, (Fig. 2) opens handwheel 14, and push rod 9 is positioned at lowermost position, and now, valve port V opens, and A, B chamber communicates, the size of valve port V aperture, and the requirement according to delivery pressure P2 regulates, and is determined by the equilibrant acted on valve rod 1.Now, as common reduction valve, carry out work, the endoporus of the small sleeve below sleeve 8 and the cylinder of push rod 9 end are slided and are joined, and its effect prevents from causing rocking of sleeve 8 when current produce fluctuation.
When the long period does not need water, counterrotating handwheel 14, push rod 9 rises, and when push rod 9 upper-end surface is with after the bottom surface of small sleeve contacts below sleeve 8, first promotes the parts such as sleeve 8, guiding valve 6, sealing gasket 4, spring 7 and valve rod 1 and moves upward together; After sealing gasket 4 contacts with annular sword limit a, valve port is closed, and A, B chamber cuts off; When push rod 9 continuation promotion valve rod 1 moves upward, moving sleeve 8 is only with to move upward, and Compress Spring 7, till sleeve confined planes c contacts with valve seat ring surface b (Fig. 3).Now, sealing gasket 4 is pressed on the annular sword limit a of valve seat by spring 7, and impacting force designs by sealing force requirement.After sleeve confined planes c contacts with valve seat ring surface b, try hard to recommend dynamic even if sleeve 8 is subject to large top again, sleeve 8 moves upward never again, the thrust of push rod 9 is born by sleeve confined planes c and valve seat ring surface b, therefore the sealing force of valve port can not change, so both ensure that stable sealability, and preventing again sealing gasket 4 to damage because bearing overvoltage.This new type sealing device fundamentally improves the force-bearing situation of flap, ensure that flap acts on valve seat with constant sealing force, both made flap from overvoltage, can ensure again reliably to seal, use rear flap distortion or wearing and tearing even if long-time after, because spring 7 makes sealing gasket 4 apply pressure to valve seat a all the time, and amount of spring compression is substantially constant, sealing force is also substantially constant, therefore still can keep excellent sealing, can not leakage be produced, like this, greatly extend the working life of flap, decrease the repair rate of valve.
The principle of this new type sealing device is also applicable to the sealing of the same race of other all kinds of machinery.
The another kind of function of this structure to prevent body cavity from producing ultrahigh pressure; under valve port V closed condition; if for a certain reason; when water-inlet cavity hydraulic pressure significantly raises suddenly, overcome the pressure of spring 7, guiding valve 6 is moved downward; valve port V opens; snout cavity high pressure water outer stomidium d at the bottom of valve seat central through bore e, valve port V, longitudinal straight trough f and cylinder, to outlet plenum pressure release, prevents the generation of ultrahigh pressure, and protection valve is from damage.
Claims (5)
1. the reduction valve with stop valve, there is valve body (11), valve rod (1), bottom flange (12), between valve body snout cavity A and outlet plenum B, be provided with transverse partition, transverse partition has vertical through hole, valve rod (1) passes from vertical through hole, it is characterized in that:
Stop valve is provided with below the vertical through hole of transverse partition;
Valve seat (2) is installed in described vertical through hole, the sleeve (8) coordinated with valve seat is had below described valve seat, guiding valve (6) is provided with in described sleeve (8), described sleeve (8) is provided with small sleeve below, be equipped with push rod (9) in described small sleeve endoporus, described push rod is through bottom flange (12) center hole;
Described valve rod (1), valve seat (2), sleeve (8), guiding valve (6), push rod (9) have same center line.
2. the reduction valve of band stop valve according to claim 1, is characterized in that: described valve seat (2) screws with outside thread and seam and is positioned in the vertical through hole of transverse partition (3) of valve body (11), and there is through hole (e) at its center; The internal diameter of valve seat (2) lower end surface is provided with outstanding annular sword limit (a) as valve port, and external diameter is provided with valve seat ring surface (b).
3. the reduction valve of band stop valve according to claim 1 and 2, it is characterized in that: described sleeve (8) is one have end cylinder, the annular end face of nozzle is sleeve confined planes (c) coordinated with valve seat ring surface (b), endoporus is a cylinder barrel, the central authorities at the cylinder end are provided with boss, boss is provided with center screw, the outside thread spiro of described center screw and valve rod (1) lower end, the excircle at the cylinder end is drilled with several holes (d), under cylinder, face is connected with a small sleeve, the endoporus of described small sleeve and push rod (9) upper end slide bar are slided and are joined, the root of small sleeve is provided with several radial holes (h).
4. the reduction valve of band stop valve according to claim 1 and 2, it is characterized in that: the profile of described guiding valve (6) is a stepped shaft cylinder, sliding fits in the cylinder barrel of sleeve (8), cylndrical surface, large footpath is provided with some longitudinal straight troughs (f), and spacing by the bulge loop (g) on axostylus axostyle under valve rod (1); There is single order trapezoidal hole at its center, and the lower axostylus axostyle of the central through bore that diameter is less and valve rod (1) is sliding joins, and when closing for preventing valve port, medium leaks from snout cavity (A) to outlet plenum (B), is provided with O-ring seals one (5) in central through bore; The upper-end surface of path cylinder is provided with groove, inside establishes sealing gasket (4), as the flap of valve port;
At the bottom of the hole of sleeve (8) groove and guiding valve (6) pit between be provided with spring (7), described spring (7) has certain pretightening force after mounting.
5. the reduction valve of band stop valve according to claim 1 and 2, it is characterized in that: the upper end of described push rod (9) is sliding cylinder of joining with the endoporus of small sleeve, and be provided with back-up ring (10), in order to place restrictions on bottom when push rod moves, middle part is provided with the corresponding internal thread of outside thread and bottom flange (12) top and screws, and hypomere is directional post, joins with the pilot hole of bottom flange (12) bottom is sliding, and having O-ring seals two (13) to prevent medium from leaking, underpart is fixed with handwheel (14); Rotate handwheel (14), push rod (9) can move up and down along the vertical center line of reduction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420553493.7U CN204114265U (en) | 2014-09-24 | 2014-09-24 | With the reduction valve of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420553493.7U CN204114265U (en) | 2014-09-24 | 2014-09-24 | With the reduction valve of stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114265U true CN204114265U (en) | 2015-01-21 |
Family
ID=52331577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420553493.7U Withdrawn - After Issue CN204114265U (en) | 2014-09-24 | 2014-09-24 | With the reduction valve of stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315212A (en) * | 2014-09-24 | 2015-01-28 | 杭州春江阀门有限公司 | Pressure reducing valve with cutoff valve |
-
2014
- 2014-09-24 CN CN201420553493.7U patent/CN204114265U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315212A (en) * | 2014-09-24 | 2015-01-28 | 杭州春江阀门有限公司 | Pressure reducing valve with cutoff valve |
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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: 20150121 Effective date of abandoning: 20160622 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |