CN204493769U - A kind of pilot-operated type adjusting valve - Google Patents
A kind of pilot-operated type adjusting valve Download PDFInfo
- Publication number
- CN204493769U CN204493769U CN201520105459.8U CN201520105459U CN204493769U CN 204493769 U CN204493769 U CN 204493769U CN 201520105459 U CN201520105459 U CN 201520105459U CN 204493769 U CN204493769 U CN 204493769U
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- Prior art keywords
- valve
- spool
- pilot
- plug
- pilot hole
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Abstract
The utility model provides a kind of pilot-operated type adjusting valve, relates to valve technology field.It comprises valve body, valve gap and upper end and stretches out valve rod outside valve gap, S shape runner upper and lower layers joint is provided with valve seat, valve seat is connected with valve plug, valve plug is the thick cylindrical structure in thin bottom, top, and valve seat coordinates with valve plug lower seal, is provided with guide sleeve above valve seat, guide sleeve and valve plug upper socket, be provided with pilot hole in valve plug, be provided with the spool mated with it in pilot hole, spool and valve rod lower end are fixed.The utility model solves the high technical problem of the complicated manufacture cost of prior art leading type regulating valve structure.The utility model beneficial effect is: when valve is opened, unbalanced force is little, good stability, and reduce steering force during valve opening, accurately can regulate small flow, valve adaptability is extensive.Simple and reasonable, valve is lightweight, easy processing, easy to assembly, low cost of manufacture.Leakage rate is little, be active in one's movements, operation and maintenance is convenient, and user cost is low.
Description
Technical field
The utility model relates to valve technology field, especially relates to a kind of structure of modulating valve.
Background technique
Valve, as the end effector controlling fluid motion in pipeline, along with improving constantly of automation, is more and more applied to the industries such as oil, chemical industry, thermoelectricity, papermaking, environmental protection, pharmacy.Modulating valve has single-seat adjusting valve and sleeve adjusting valve two kinds in the market.Single-seat adjusting valve leakage rate is little, and permissible pressure is little, and bore scope is usually at DN200 and following, and the relation of little because of permissible pressure of bore, Applicable scope is restricted, but processing and assembling are easily.Sleeve adjusting valve leakage rate is large, and permissible pressure is large, and bore scope is usually at DN450 and following, and Applicable scope is comparatively large, but inapplicable amount of leakage requires strict occasion, and processing difficulties.The bore of these two kinds of modulating valve DN65 and more than, and valve is when below 20%, small guide vane regulates, there will be and regulates dumb, unstable phenomenon.In addition, large for bore and minimum of computation Cv value is less than normal time manufacture very difficult.Advantage how in conjunction with these two kinds of valves creates a kind of new structure, is a kind of developing direction.Chinese patent Authorization Notice No. CN102628523B, on December 3 2014 notice of authorization date, the patent of invention that name is called " a kind of pilot-operated type adjusting valve " is exactly a kind of technological scheme wherein.It comprises valve body, spool, valve rod and handle, spool is positioned at valve body and valve rod is inner and spool is connected, valve rod outer end stretches out valve body and handle is connected, spool is tubular and is enclosed within valve rod, valve rod have the nut that can be resisted against spool bottom port place and the small valve core that can be resisted against spool top port place, spool between nut and small valve core and it can move between these, there is between spool and valve rod the passage passed through for flowing medium, have when both contact the sealing configuration that can realize sealing between small valve core with spool top port, during this modulating valve closed condition, sealing is formed between spool and valve body, meanwhile, small valve core is resisted against spool top port place by sealing configuration by spool port sealing, small valve core is circular and it is enclosed within valve rod, sealing configuration comprises the recessed packing holder in small valve core end, one small sealing ring is embedded in packing holder and small sealing ring is connected with valve stem seal, sealing configuration also comprises a spring, there is inside spool the shoulder block of protrusion, the two ends of above-mentioned spring are pushed up respectively and are pressed on shoulder block and small sealing ring.This technological scheme, structure is too complicated, improves manufacture cost.
Summary of the invention
In order to solve the technical problem that in prior art, pilot-operated type adjusting valve complex structure manufacture cost is high, when the utility model provides a kind of unlatching unbalanced force little, be conducive to sealing, structure is simple, the pilot-operated type adjusting valve structure of easy processing, low cost of manufacture.
The technical solution of the utility model is: a kind of pilot-operated type adjusting valve, it comprises the valve body being provided with S shape runner, the valve rod stretched out with its fixing valve gap and upper end outside valve gap, S shape runner upper and lower layers joint is provided with valve seat, valve seat is connected with valve plug, valve plug is the thick cylindrical structure in thin bottom, top, valve seat coordinates with valve plug lower seal, guide sleeve is provided with above valve seat, guide sleeve and valve plug upper socket, pilot hole is provided with in valve plug, be provided with the spool mated with it in pilot hole, spool and valve rod lower end are fixed.Both maintain the advantage of single-seat valve, overcome again the defect of telescoping valve.Simple and reasonable, valve is lightweight, leakage rate is little, be active in one's movements, easy accessibility, easy processing, low cost of manufacture.
As preferably, the sidewall of valve plug near the thin portion of thickness joint is provided with small flow channels hole, and small flow channels hole is communicated with S shape runner upper strata and pilot hole; When valve is opened, unbalanced force is little, good stability.Accurately can regulate small flow in opening process, solve the problem that general modulating valve is difficult to small flow regulate.
As preferably, spool is cross, and spool bottom is socketed with spring, and spool lower end is round table-like is spool end, and spool end and pilot hole are sealed and matched; Realize guide switch valve.
As preferably, valve rod upper end is provided with screw thread; Valve plug and spool can move up and down.
Compared with prior art, the beneficial effects of the utility model are: the advantage both having maintained single-seat valve, and when valve is opened, unbalanced force is little, good stability; Overcome again the defect of telescoping valve, reduce steering force during valve opening, accurately can regulate small flow in opening process, valve adaptability is extensive.Simple and reasonable, valve is lightweight, easy processing, easy to assembly, low cost of manufacture.Leakage rate is little, be active in one's movements, operation and maintenance is convenient, and user cost is low.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model sectional view;
Accompanying drawing 2 is the enlarged diagram of spool, valve plug joint.
In figure: 1-valve body; 2-valve plug; 3-spool; 4-spring seat; 5-spring; 6-gland; 7-valve gap; 8-valve rod; 11-valve seat; 12-guide sleeve; 21-pilot hole; 22-small flow channels hole; 31-spool end; 81-elastic cylindrical pin.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Fig. 1 and 2, a kind of pilot-operated type adjusting valve, it comprises the valve body 1 being provided with S shape runner, the valve rod 8 stretched out with its fixing valve gap 7 and upper end outside valve gap 7.The upper end of valve body 1 and the lower end of valve gap 7 seal fixing.Valve rod 8 stretches out valve gap 7 top in cylindric upper end.Valve rod 8 upper end is provided with screw thread, engages with valve-opening mechanism (not shown).The S-shaped runner of inner chamber that valve body 1 and valve gap 7 surround, S shape runner two ends are connected with pipeline (not shown) respectively.S shape runner upper and lower layers joint is provided with valve seat 11, and valve seat 11 is connected with valve plug 2.Valve seat 11 is fixed with valve body 1, is provided with runner hole in the middle of valve seat 11.Guide sleeve 12 is provided with, guide sleeve 12 and valve plug 2 upper socket above valve seat 11.Guide sleeve 12 is fixed with the upper end of valve body 1, is provided with pilot hole in the middle of guide sleeve 12.Valve plug 2 is in the thick cylindrical structure in thin bottom, top, and pilot hole is inserted on valve plug 2 top.Valve seat 11 coordinates with valve plug 2 lower seal.Be provided with pilot hole 21 in valve plug 2, pilot hole 21 runs through valve plug 2 upper and lower surface.Valve plug 2 lower sides is provided with throttling window, and throttling window is communicated with pilot hole 21 and S shape runner.By regulating the area of contact of throttling window and S shape runner upper strata, reach the flow of modulating valve.The sidewall of valve plug 2 near the thin portion of thickness joint is provided with small flow channels hole 22, and small flow channels hole 22 is communicated with S shape runner upper strata and pilot hole 21.The spool 3 mated with it is provided with in pilot hole 21.Spool 3 is in cross.Spool 3 bottom is socketed with spring 5.Be provided with spring seat 4 in pilot hole 21, spring seat 4 is positioned at above small flow channels hole 22.Spring 5 upper end and spool 3 cross horizontal stripe withstand, and lower end and spring seat 4 withstand.Gland 6 is provided with above spool 3 cross horizontal stroke.Gland 6 is in T shape, and gland 6 greatly end and valve plug 2 upper end portion is fixed, and gland 6 small end embeds pilot hole 21.Be provided with attachment hole in the middle of gland 6, attachment hole is inserted in spool 3 upper end.Spool 3 and valve rod 8 lower end are fixed.Spool 3 upper end is provided with connecting thread hole, is threaded with valve rod 8 lower end.Spool 3 upper end and valve rod 8 times joints cross elastic cylindrical pin 81, increase degree of being connected firmly.Spool 3 lower end is round table-like is spool end 31, and spool end 31 and pilot hole 21 are sealed and matched.Pilot hole 21 is positioned at below small flow channels hole 22 reducing.Spool end 31 greatly end is greater than reducing, and spool end 31 small end is less than reducing.Spool end 31 greatly end blocks reducing, and pilot hole 21 and small flow channels hole 22 disconnect; Spool end 31 greatly end leaves reducing, and pilot hole 21 is communicated with small flow channels hole 22.
Claims (4)
1. a pilot-operated type adjusting valve, it comprises the valve body (1) being provided with S shape runner, valve gap (7) valve rod outward (8) is stretched out in the valve gap (7) fixing with it and upper end, it is characterized in that: described S shape runner upper and lower layers joint is provided with valve seat (11), valve seat (11) is connected with valve plug (2), valve plug (2) is the thick cylindrical structure in thin bottom in top, valve seat (11) coordinates with valve plug (2) lower seal, valve seat (11) top is provided with guide sleeve (12), guide sleeve (12) and valve plug (2) upper socket, pilot hole (21) is provided with in described valve plug (2), the spool (3) mated with it is provided with in pilot hole (21), spool (3) and valve rod (8) lower end are fixed.
2. a kind of pilot-operated type adjusting valve according to claim 1, is characterized in that: the sidewall of described valve plug (2) near the thin portion of thickness joint is provided with small flow channels hole (22), and small flow channels hole (22) are communicated with S shape runner upper strata and pilot hole (21).
3. a kind of pilot-operated type adjusting valve according to claim 1, it is characterized in that: described spool (3) is in cross, spool (3) bottom is socketed with spring (5), and spool (3) lower end is round table-like is spool end (31), and spool end (31) and pilot hole (21) are sealed and matched.
4. a kind of pilot-operated type adjusting valve according to claim 1, is characterized in that: described valve rod (8) upper end is provided with screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520105459.8U CN204493769U (en) | 2015-02-13 | 2015-02-13 | A kind of pilot-operated type adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520105459.8U CN204493769U (en) | 2015-02-13 | 2015-02-13 | A kind of pilot-operated type adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493769U true CN204493769U (en) | 2015-07-22 |
Family
ID=53573088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520105459.8U Expired - Fee Related CN204493769U (en) | 2015-02-13 | 2015-02-13 | A kind of pilot-operated type adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-02-13 CN CN201520105459.8U patent/CN204493769U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20170213 |