CN203948643U - Pilot-operated type adjusting valve - Google Patents
Pilot-operated type adjusting valve Download PDFInfo
- Publication number
- CN203948643U CN203948643U CN201420312494.2U CN201420312494U CN203948643U CN 203948643 U CN203948643 U CN 203948643U CN 201420312494 U CN201420312494 U CN 201420312494U CN 203948643 U CN203948643 U CN 203948643U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- pilot
- balancing weight
- operated type
- 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 - Fee Related
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Abstract
The utility model relates to a kind of modulating valve, be particularly related to a kind of pilot-operated type adjusting valve, comprise valve body, valve gap, valve rod, valve body both sides are provided with the flow channel communicating with inner chamber, flow pass, in inner chamber, be provided with valve seat, valve cage, spool is housed in valve cage, valve rod upper end connects final controlling element, insert in valve body through valve gap its lower end, in spool, be provided with core chamber, core chamber communicates with flow pass, it is indoor that core is inserted in valve gap lower end, a balancing weight is fixed in its end, balancing weight upper surface is provided with fluting, spool and valve rod joint are provided with the upper sealing cooperatively interacting, lower seal, upper sealing is arranged on valve rod by sealing fixed base, lower seal correspondence is arranged on spool.The utility model reduces component, makes to simplify the structure, and good airproof performance, reduces production costs, easy to maintenance.
Description
Technical field
The utility model relates to a kind of modulating valve, and particularly a kind of pilot-operated type adjusting valve, belongs to valve technology field.
Background content
Cage type regulating valve is widely used in, in the industrial fields such as chemical industry, smelting, electric power, having important effect.Yet cage type regulating valve, when being applied to the hyperbaric environment in above-mentioned field, because pressure reduction is very large, for valve is opened smoothly, needs actuator that very large pulling force is provided, must increase the power of electromagnet, so not only power consumption is large, and electromagnetic coil is easily heating also.
Pilot-operated type adjusting valve, by the method for valve medium self opened by pressure valve, has solved the drawback of traditional cage type regulating valve.Existing pilot-operated type adjusting valve leading type structure is comprised of valve rod, pin, sleeve, attachment screw, pressing plate, guide's spool, guide ring, main valve plug, spring and spline pin, component are numerous, connect comparatively complicated, occur that the probability damaging is higher, cost of production is high, makes troubles to conventional maintenance and use.
Prior art is compared, and the beneficial effect the utlity model has is:
This pilot-operated type adjusting valve substitutes original leading type structure by balancing weight, upper sealing, lower seal, has greatly reduced the quantity of component, makes to simplify the structure, and reduces production costs, and reduces unit failure probability, easy to maintenance; The sealability that has improved valve rod place by sealing axially and radially, realizes the sealing of spool by fluid medium pressure, pressure reduction is larger, and sealability is better.
Model utility content
According to above the deficiencies in the prior art, technical problem to be solved in the utility model is: a kind of pilot-operated type adjusting valve is provided, reduces component, make to simplify the structure, good airproof performance, reduces production costs, easy to maintenance.
Pilot-operated type adjusting valve described in the utility model, comprise valve body, valve gap, valve rod, valve body both sides are provided with the flow channel communicating with inner chamber, flow pass, in inner chamber, be provided with valve seat, valve cage, spool is housed in valve cage, valve rod upper end connects final controlling element, insert in valve body through valve gap its lower end, in spool, be provided with core chamber, core chamber communicates with flow pass, it is indoor that core is inserted in valve gap lower end, a balancing weight is fixed in its end, balancing weight upper surface is provided with fluting, spool and valve rod joint are provided with the upper sealing cooperatively interacting, lower seal, upper sealing is arranged on valve rod by sealing fixed base, lower seal correspondence is arranged on spool.
By balancing weight is set, when spool is closed, valve rod moves down under balancing weight Action of Gravity Field, the upper sealing on valve rod and lower seal automatic impaction, thus the cavity of core chamber and spool top is separated, play seal action.The medium simultaneously flowing into through flow channel is tightly pressed in spool on valve seat, makes seal spool.During unlatching, by moving on balancing weight, upper sealing separates with lower seal, thereby carries out pressure release, and fluting is set on balancing weight, and while making to open, the cavity of core chamber and spool top is all the time on state, thereby spool is easily mentioned.
Described balancing weight is hemisphere, and its upper surface is plane.
Described fluting is uniformly distributed circumferentially 4～10, and valve rod place, Bing You center extends to the periphery into radial.
Described upper sealing, lower seal is respectively equipped with axially and radial fit face, and the sealing by axially and radially makes the leakage rate that valve rod is very low with the arrival of spool place, and sealing load is from the gravity of balancing weight.
Described upper sealing is arranged in sealing fixed base by set screw.
Between described valve cage bottom and spool, be provided with seal spool part, between valve cage top and spool, be provided with guide ring, guide ring is arranged on spool by compressing end cap, segment fluid flow medium through the gap of valve cage and spool and the gap of guide ring and valve cage enter the cavity of spool top, thereby realize the pressuring action to spool.
When spool is closed, valve rod moves down under balancing weight Action of Gravity Field, the upper sealing on valve rod and the lower seal automatic impaction on spool, thus the cavity of core chamber and spool top is separated, play seal action.Segment fluid flow medium through the gap of valve cage and spool and the gap of guide ring and valve cage enter the cavity of spool top, thereby realize the pressuring action to spool.During unlatching, first final controlling element action, by valve rod pull-up, on balancing weight, carry, upper sealing separates with lower seal, the cavity conducting of core chamber and spool top, thereby realize pressure release, balancing weight is carried on continuing, when balancing weight upper surface is against on spool, on band movable valve plug, move, spool is opened, owing to carrying out pressure release, therefore spool is easy to mention, the fluting of balancing weight, while making to open, the cavity of core chamber and spool top is all the time on state.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is A place enlarged view in Fig. 1;
Fig. 3 is balancing weight plan view.
In figure: 1, valve body; 2, flow pass; 3, valve cage; 4, dentiform gasket; 5, valve gap; 6, final controlling element; 7, valve rod; 8, sealing fixed base; 9, set screw; 10, upper sealing; 11, lower seal; 12, window; 13, flow channel; 14,
Seal spool part; 15, balancing weight; 16, spool; 17, valve seat; 18, guide ring; 19, compress end cap; 20, housing screw; 21, core chamber; 1501, fluting.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As shown in Figures 1 to 3, this pilot-operated type adjusting valve comprises valve body 1, valve gap 5, valve rod 7, valve body 1 both sides are provided with flow channel 13, the flow pass 2 communicating with inner chamber, in inner chamber, be provided with valve seat 17, valve cage 3, spool 16 is housed in valve cage 3, valve rod 7 upper ends connect final controlling element 6, insert in valve body 1 through valve gap 5 its lower end, between valve cage 3 bottoms and spool 16, be provided with seal spool part 14, between valve cage 3 tops and spool 16, be provided with guide ring 18, guide ring 18 is arranged on spool 16 by compressing end cap 19, compresses end cap 19 fixing by housing screw 20.Between valve cage 3 tops and valve body 1, valve gap 5, be respectively equipped with dentiform gasket 4 and seal, between valve seat 17 and valve body 1, be provided with equally dentiform gasket 4.
In spool 16, be provided with core chamber 21, core chamber 21 communicates with flow pass 2, insert in core chamber 21 valve gap 5 lower ends, a balancing weight 15 is fixed in its end, balancing weight 15 is designed to hemisphere, to make it have larger gravity, balancing weight 15 upper surfaces are plane, plane is provided with the some flutings 1501 that are uniformly distributed circumferentially, its quantity is 4～10, and fluting 1501 is extended to the periphery into radial by center valve rod 16 places, and the degree of depth is 1～2mm, so that balancing weight 15 upper surfaces are while being against on spool 16, core chamber 21 with the cavity on spool 16 tops all the time on state.Spool 16 is provided with valve rod 7 joints upper sealing 10, the lower seal 11 cooperatively interacting, and upper sealing 10 is arranged on valve rod 7 and by set screw 9 and is fixed by sealing fixed base 8, and lower seal 11 correspondences are arranged on spool 16.Upper sealing 10, lower seal 11 are respectively equipped with axially and radial fit face, and the sealing by axially and radially makes valve rod 7 and spool 16 places arrive very low leakage rate, and sealing load is from the gravity of balancing weight 15.
Working procedure and principle:
When spool 16 is closed, valve rod 7 moves down under balancing weight 15 Action of Gravity Fields, the upper sealing 10 on valve rod 7 and lower seal 11 automatic impactions on spool 16, thus core chamber 21 and the cavity of spool 16 tops are separated, play seal action.Segment fluid flow medium enters the cavity of spool 16 tops through valve cage 3 and gap and the guide ring 18 of spool 16 with the gap of valve cage 3, thereby realizes the pressuring action to spool 16.During unlatching, first final controlling element 6 actions, by valve rod 7 pull-ups, on balancing weight 15, carry, upper sealing 10 separates with lower seal 11, the cavity conducting of core chamber 21 and spool 16 tops, thereby realize pressure release, on balancing weight 15 continues, carry, when balancing weight 15 upper surfaces are against on spool 16, on band movable valve plug 16, move, spool 16 is opened, owing to carrying out pressure release, therefore spool 16 is easy to mention, the fluting 1501 of balancing weight 15, while making to open, the cavity of core chamber 21 and spool 16 tops is all the time on state.
Claims (6)
1. a pilot-operated type adjusting valve, comprise valve body (1), valve gap (5), valve rod (7), valve body (1) both sides are provided with the flow channel (13) communicating with inner chamber, flow pass (2), in inner chamber, be provided with valve seat (17), valve cage (3), spool (16) is housed in valve cage (3), valve rod (7) upper end connects final controlling element (6), insert in valve body (1) through valve gap (5) its lower end, it is characterized in that: in spool (16), be provided with core chamber (21), core chamber (21) communicates with flow pass (2), insert in core chamber (21) valve gap (5) lower end, a balancing weight (15) is fixed in its end, balancing weight (15) upper surface is provided with fluting (1501), spool (16) is provided with valve rod (7) joint the upper sealing (10) cooperatively interacting, lower seal (11), upper sealing (10) is arranged on valve rod (7) by sealing fixed base (8), lower seal (11) correspondence is arranged on spool (16).
2. pilot-operated type adjusting valve according to claim 1, is characterized in that: described balancing weight (15) is hemisphere, and its upper surface is plane.
3. pilot-operated type adjusting valve according to claim 2, is characterized in that: described fluting (1501) is uniformly distributed circumferentially 4～10, and Bing You center valve rod (16) is located to extend to the periphery into radial.
4. pilot-operated type adjusting valve according to claim 1, is characterized in that: described upper sealing (10), lower seal (11) are respectively equipped with axially and radial fit face.
5. pilot-operated type adjusting valve according to claim 1, is characterized in that: described upper sealing (10) is arranged in sealing fixed base (8) by set screw (9).
6. according to the arbitrary described pilot-operated type adjusting valve of claim 1～5, it is characterized in that: between described valve cage (3) bottom and spool (16), be provided with seal spool part (14), between valve cage (3) top and spool (16), be provided with guide ring (18), guide ring (18) is arranged on spool (16) by compressing end cap (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312494.2U CN203948643U (en) | 2014-06-12 | 2014-06-12 | Pilot-operated type adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312494.2U CN203948643U (en) | 2014-06-12 | 2014-06-12 | Pilot-operated type adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948643U true CN203948643U (en) | 2014-11-19 |
Family
ID=51890680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420312494.2U Expired - Fee Related CN203948643U (en) | 2014-06-12 | 2014-06-12 | Pilot-operated type adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775784A (en) * | 2015-03-11 | 2015-07-15 | 徐占有 | Oil field wellhead device and pressureout prevention device for Christmas tree |
-
2014
- 2014-06-12 CN CN201420312494.2U patent/CN203948643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775784A (en) * | 2015-03-11 | 2015-07-15 | 徐占有 | Oil field wellhead device and pressureout prevention device for Christmas tree |
| CN104775784B (en) * | 2015-03-11 | 2017-05-10 | 徐占有 | Oil field wellhead device and pressureout prevention device for Christmas tree |
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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: 20141119 Termination date: 20190612 |