CN203743551U - Multistage pressure reducing valve - Google Patents
Multistage pressure reducing valve Download PDFInfo
- Publication number
- CN203743551U CN203743551U CN201420079247.2U CN201420079247U CN203743551U CN 203743551 U CN203743551 U CN 203743551U CN 201420079247 U CN201420079247 U CN 201420079247U CN 203743551 U CN203743551 U CN 203743551U
- Authority
- CN
- China
- Prior art keywords
- valve
- sleeve
- spool
- valve body
- throttling
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000006837 decompression Effects 0.000 claims description 10
- 230000001413 cellular effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
A multistage pressure reducing valve mainly comprises a valve body. A valve seat is mounted in the valve body which is provided with a valve cover, a valve element on the valve seat is connected with a valve rod which penetrates through the valve cover and can move up and down, and the valve cover is fixed on the upper portion of the valve body through a sealing gasket; the valve seat is pressed in the valve body by the valve cover through a sleeve and a balancing cylinder both on the valve seat; the valve element fixedly connected with the valve rod is a balancing type valve element having a function of balancing upper pressure and lower pressure, and the valve element is arranged in the sleeve on the valve seat and can move up and down along with the valve rod; the sleeve is a bore type maze throttling multi-layer sleeve formed by combining at least two layers of sleeve bodies, each layer of sleeve body is provided with small bores or kidney-shaped bores, and the small bores or the kidney-shaped bores form throttling sections for different streams when media pass through the bores. The multistage pressure reducing valve has the advantages of being reasonable in structure, convenient and reliable to use, low in noise, stable in regulation, capable of reducing cavitation erosion and vibration, easy to repair, long in service life and especially suitable for special high-pressure-difference technological processes.
Description
Technical field
The utility model relates to a kind of multilevel decompression valve, belong to universal machine valve technology field.
Background technique
Along with industry is fast-developing, in special High Pressure Difference technological process, the requirements such as noise is low, modification stability, minimizing cavitation, minimizing vibration, easy-maintaining, long service life have been proposed for the valve using in technique.Common valve mechanism cannot meet the technological requirement of above-mentioned proposition.Some inlet valves adopt the mode of labyrinth throttling groove step-downs to meet preferably these technological requirements, but deficiency is easily by rubbish jam, moreover labyrinth throttling groove processing technology is more complicated, and processing cost is higher; Therefore design a kind of novel anti-cavitation, anti-vibration, noise reduction valve extremely urgent.
Model utility content
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of novel multilevel decompression valve is provided, and comes that to meet the need noise is low, modification stability, minimizing cavitation, reduces the special High Pressure Difference technological process of vibration, easy-maintaining, long service life.
The purpose of this utility model completes by following technical solution, described multilevel decompression valve, it mainly comprises a valve body, valve seat is installed in valve body, above valve body, dispose valve gap, the spool being positioned on valve seat is connected with through valve gap and can moves up and down the valve rod of realizing valve opening, and described valve gap is fixed on valve body top by gasket seal; Described valve seat is crimped in valve body by described valve gap by upper surface sleeve peace weighing apparatus cylinder; The spool being connected with valve rod is to be shaped with the balanced type spool of pressure balance effect in the above, and this spool is placed in the sleeve on valve seat and can moves up and down with valve rod.
The cellular type labyrinth throttling multilayer sleeve that described sleeve is combined by least two-layer sleeve, has aperture or kidney-shaped aperture on every one deck sleeve, and described aperture or kidney-shaped aperture form the throttling section of different shallow bids when by medium.
The cellular type labyrinth throttling multilayer sleeve that described sleeve is combined by three layers of sleeve, the aperture on every one deck sleeve or kidney-shaped aperture are formed with the step-down throttling shallow bid passage that level Four is turned on different throttling sections.
Described multilayer sleeve is fixed composition by Cock screw, is provided with and not only plays isolated high low pressure medium effect, but also the seal ring that can play the guiding role to spool between the compensating cylinder that described sleeve joins above.
Described valve gap underpart is bolted on valve body top, and the upper end portion of valve gap is crimped with the filler part of valve rod being stretched out to place's sealing by a Gland.
The utility model is mainly used in the adjusting in High Pressure Difference operating mode, and it can the flow velocity of control media in trim, during for cryogenic media, can reduce cavitation, noise reduction; For normal temperature medium can noise reduction, improve degree of regulation etc.
Tube-in-tube structure described in the utility model is convenient to processing, and processing cost is lower; With respect to common labyrinth throttling groove, cellular type labyrinth throttle style is difficult for blocking rubbish, easy to clean rubbish etc.; Have rational in infrastructurely, easy to use and reliable, noise is low, and modification stability can reduce cavitation, reduce vibration, easy-maintaining, long service life, is particularly useful for the features such as special High Pressure Difference technological process.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is tube-in-tube structure schematic diagram described in the utility model.
Fig. 3 is three layers of sleeve composite structure schematic diagram described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1, multilevel decompression valve described in the utility model, it mainly comprises a valve body 1, valve seat 2 is installed in valve body, above valve body, dispose valve gap 3, the spool 4 being positioned on valve seat is connected with through valve gap and can moves up and down the valve rod 5 of realizing valve opening, and described valve gap 3 is fixed on valve body 1 top by gasket seal 14; Described valve seat 2 is crimped in valve body 1 by described valve gap 3 by upper surface sleeve 6 and compensating cylinder 7; The spool 4 being connected with valve rod is to be shaped with the balanced type spool of pressure balance effect in the above, and this spool 4 is placed in the sleeve 6 on valve seat and can moves up and down with valve rod.
Valve gap described in the utility model 3 underparts are bolted on valve body top, and the upper end portion of valve gap is crimped with the filler part 8 of valve rod 5 being stretched out to place's sealing by a Gland 9.
Shown in Fig. 2, the cellular type labyrinth throttling multilayer sleeve that described sleeve 6 is combined by least two-layer sleeve, has aperture or kidney-shaped aperture on every one deck sleeve, and described aperture or kidney-shaped aperture form the throttling section of different shallow bids when by medium.
Figure 3 shows that an embodiment of the present utility model, the cellular type labyrinth throttling multilayer sleeve that wherein said sleeve 6 is combined by three layers of sleeve, the aperture on every one deck sleeve or kidney-shaped aperture are formed with the step-down throttling shallow bid passage that level Four is turned on different throttling sections.
Multilayer sleeve described in the utility model forms by Cock screw 15 is fixing, is provided with and not only plays isolated high low pressure medium effect, but also the spring energy-storage shape seal ring 13 that can play the guiding role to spool 4 between the compensating cylinder 7 that described sleeve 6 joins above.
Shown in embodiment: Fig. 1,2,3, the utility model is mainly comprised of valve body 1, valve seat 2, valve gap 3, spool 4, valve rod 5, sleeve 6, compensating cylinder 7, filler part 8, Gland 9, double-screw bolt 10, Full Thread FT double-screw bolt 11, pad 12, spring energy-storage shape seal ring 13, gasket seal 14 etc.Valve body 1 is connected by Full Thread FT double-screw bolt 11 with valve gap 3, and centre is pressed with gasket seal 14; Valve seat 2, sleeve 6 are also pressed in valve body 1 with compensating cylinder 7; Spool 4 is balanced type spool, pressure balance effect on the spool that has been with holes above, and spool 4 is welding as one with valve rod 5, in external force, drive lower valve core 4 in the interior motion of sleeve 6, different according to spool 4 sleeve of living in 6 positions, form throttling section different, different pressures and traffic requirement after adjustable valve; Seal ring 13 between sleeve 6 and compensating cylinder 7 plays the low piezodielectric of isolated compensating cylinder 7 inner high voltage media and spool 4 rear ends on the one hand, play the guiding role on the other hand spool 4; Filler part 8 is pressed in valve gap 3 by Gland 9, carries out the sealing at valve rod 5 places.Sleeve 6 described in the utility model is a kind of cellular type labyrinth throttle styles, specifically by multilayer sleeve (first layer sleeve 16, second layer sleeve 17, the 3rd layer of sleeve 18), by Cock screw 15, fixedly formed, also different according to the different formation of pressure reduction before and after the valve sleeve number of plies, the present embodiment is three-decker, every one deck has aperture or kidney-shaped aperture, make medium when flowing through sleeve, be divided into different shallow bids, and at different sleeves, carry out multistage turning and carry out step-down, the level Four in tube-in-tube structure is turned and is carried out step-down as shown in Figure 3.
Claims (5)
1. a multilevel decompression valve, it mainly comprises a valve body (1), valve seat (2) is installed in valve body, valve body (1) disposes valve gap (3) above, the spool (4) being positioned on valve seat (2) is connected with through valve gap (3) and can moves up and down the valve rod (5) of realizing valve opening, it is characterized in that described valve gap (3) is fixed on valve body (1) top by gasket seal (14); Described valve seat (2) is crimped in valve body (1) by described valve gap (3) by upper surface sleeve (6) and compensating cylinder (7); The spool (4) being connected with valve rod is to be shaped with the balanced type spool of pressure balance effect in the above, and this spool (4) is placed in the sleeve (6) on valve seat and can moves up and down with valve rod.
2. multilevel decompression valve according to claim 1, it is characterized in that the cellular type labyrinth throttling multilayer sleeve that described sleeve (6) is combined by least two-layer sleeve, on every one deck sleeve, have aperture or kidney-shaped aperture, and described aperture or kidney-shaped aperture form the throttling section of different shallow bids when by medium.
3. multilevel decompression valve according to claim 2, it is characterized in that the cellular type labyrinth throttling multilayer sleeve that described sleeve (6) is combined by three layers of sleeve, the aperture on every one deck sleeve or kidney-shaped aperture are formed with the step-down throttling shallow bid passage that level Four is turned on different throttling sections.
4. according to the multilevel decompression valve described in claim 2 or 3, it is characterized in that described multilayer sleeve forms by Cock screw (15) is fixing, between the compensating cylinder (7) that described sleeve (6) joins above, be provided with and not only play isolated high low pressure medium effect, but also the spring energy-storage RunddichtringO (13) that can play the guiding role to spool (4).
5. multilevel decompression valve according to claim 1, is characterized in that valve gap (3) underpart is bolted on valve body top, and the upper end portion of valve gap is crimped with the filler part (8) of valve rod (5) being stretched out to place's sealing by a Gland (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079247.2U CN203743551U (en) | 2014-02-25 | 2014-02-25 | Multistage pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079247.2U CN203743551U (en) | 2014-02-25 | 2014-02-25 | Multistage pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743551U true CN203743551U (en) | 2014-07-30 |
Family
ID=51343352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079247.2U Expired - Lifetime CN203743551U (en) | 2014-02-25 | 2014-02-25 | Multistage pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743551U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821979A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Multistage depressurization valve |
| CN108317298A (en) * | 2018-03-04 | 2018-07-24 | 江苏江进泵业有限公司 | Low leakage pilot-operated type single-seat adjusting valve spool |
| CN113251204A (en) * | 2021-05-11 | 2021-08-13 | 浙江大学 | Multi-stage sleeve type high-pressure-difference control valve sleeve structure and design optimization method |
-
2014
- 2014-02-25 CN CN201420079247.2U patent/CN203743551U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821979A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Multistage depressurization valve |
| CN108317298A (en) * | 2018-03-04 | 2018-07-24 | 江苏江进泵业有限公司 | Low leakage pilot-operated type single-seat adjusting valve spool |
| CN113251204A (en) * | 2021-05-11 | 2021-08-13 | 浙江大学 | Multi-stage sleeve type high-pressure-difference control valve sleeve structure and design optimization method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |