CN203948668U - Cage equilibrium valve - Google Patents
Cage equilibrium valve Download PDFInfo
- Publication number
- CN203948668U CN203948668U CN201420312440.6U CN201420312440U CN203948668U CN 203948668 U CN203948668 U CN 203948668U CN 201420312440 U CN201420312440 U CN 201420312440U CN 203948668 U CN203948668 U CN 203948668U
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- China
- Prior art keywords
- spool
- valve
- sleeve
- seal ring
- valve body
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of cage equilibrium valve, belong to valve technology field, comprise valve body and be arranged on the valve seat in valve body, sleeve, in sleeve, be provided with spool, spool upper end is connected with valve rod, valve gap is equipped with in valve body top, between spool bottom and valve seat, be provided with the first seal ring, between spool top and sleeve, be provided with the second seal ring, the first seal ring is got negative common difference and is installed, the second seal ring is got plus tolerance and is installed, spool upper end edge periphery is provided with a graphite annulus, graphite annulus outer side surface is against on sleeve lining, its top is provided with compression end cap, compressing end cap is fixed on spool.The utility model improves sealability, reduces costs, and steering capability is good, and spool is stable.
Description
Technical field
The utility model relates to a kind of cage equilibrium valve, belongs to valve technology field.
Background technique
Cage equilibrium valve adopts sleeve to lead to spool in valve body, has vibrating noise noise little, and therefore the feature that sealability is superior is widely used in the industrial fields such as chemical industry, smelting, electric power, and has brought into play important effect.
Existing cage equilibrium valve spool adopts upper and lower two Sealings to seal conventionally, and wherein, upper Sealing is arranged on the top of sleeve perforate, and with sleeve fitted seal, lower seal is arranged on the below of sleeve perforate, with valve seat fitted seal.For guaranteeing sealing effect, upper Sealing and lower seal precision prescribed are very high, need be processed into through machining, underhand polish.Yet due to the existence of tolerance, in practical set process, upper Sealing and lower seal certainly exist build-up tolerance, when tolerance is got respectively two end values, will cause leakage rate to increase, affect sealing effect.As above Sealing is got maximum plus tolerance, and lower seal is got minimal negative tolerance, and the leakage rate of spool bottom increases.
Model utility content
According to above the deficiencies in the prior art, the purpose of this utility model is: a kind of cage equilibrium valve is provided, improves sealability, reduce costs, steering capability is good, and spool is stable.
Cage equilibrium valve described in the utility model, comprise valve body and be arranged on valve seat, the sleeve in valve body, in sleeve, be provided with spool, spool upper end is connected with valve rod, valve gap is equipped with in valve body top, between spool bottom and valve seat, be provided with the first seal ring, between spool top and sleeve, be provided with the second seal ring, the first seal ring is got negative common difference and is installed, the second seal ring is got plus tolerance and is installed, and spool upper end edge periphery is provided with a graphite annulus, and graphite annulus outer side surface is against on sleeve lining, its top is provided with compression end cap, compresses end cap and is fixed on spool.
By graphite annulus is set, graphite annulus is coordinated with sleeve inner, increased sealing together, two seals is carried out by the first seal ring and graphite annulus in the perforate top that is equivalent to sleeve, and the sealability on top strengthens greatly.Therefore, the second seal ring of bottom is set to plus tolerance and installs, and the first seal ring is set to negative common difference installation, on the one hand, reduced difficulty of processing, cut down finished cost, by the second seal ring, guaranteed on the other hand the sealing of bottom, and first seal ring on top, by adopting graphite annulus sealing to make up, also guarantee sealing, thereby improved whole sealability.When graphite annulus seals, also there is steering capability, thereby improved the stability of spool operation.
Described graphite annulus and sleeve lining interference fit, the hardness of graphite annulus is told somebody what one's real intentions are, and by interference fit, graphite annulus and sleeve lining is compressed, and guarantees sealing.
Described compression end cap is fixed on spool by hold-down bolt, and corresponding spool is provided with tapped hole.
Described spool has equalizing orifice along circumferential arrangement, by equalizing orifice, a small amount of liquid leaking is stayed in equalizing orifice, reduces the pressure reduction of spool both sides, makes the unlatching of spool more smooth and easy.
Described valve seat is fixed on valve body by sleeve, sleeve upper end is fixed and clamped by valve gap, by the mode that adopts sleeve directly valve seat to be pressed on valve body, replace the mode that original valve seat is connected with valve body by screw thread, make the dismounting of valve seat more simple and convenient, reduce maintenance cost.
Between described valve seat lower end and valve body, be provided with pad, between upper cartridge and valve body, be provided with static seal.
Compared with prior art, the beneficial effect the utlity model has is:
This cage equilibrium valve, by graphite annulus is set, has reduced original the first seal ring, the second seal ring difficulty of processing, cuts down finished cost; By graphite annulus, make up top seal, thereby improved whole sealability; By the leading role of graphite annulus, improved the stability of spool operation; Can on original spool basis, improve, retain original valve core structure, processing is simple, and applicability is good; By the mode that adopts sleeve directly valve seat to be pressed on valve body, replace the mode that original valve seat is connected with valve body by screw thread, reduce maintenance cost.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is A place enlarged view in Fig. 1.
In figure: 1, valve body; 2, valve seat; 3, spool; 4, sleeve; 5, static seal; 6, valve gap; 7, valve rod; 8, equalizing orifice; 9, hold-down bolt; 10, compress end cap; 11, graphite annulus; 12, the first seal ring; 13, pad; 14, the second seal ring.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As shown in Fig. 1～2, this cage equilibrium valve comprises valve body 1 and is arranged on valve seat 2, the sleeve 4 in valve body 1, valve seat 2 is directly fitted on valve body 1 by sleeve 4, replace the mode that original valve seat 2 is connected with valve body 1 by screw thread, between valve seat 2 lower ends and valve body 1, be provided with pad 13, sleeve 2 upper ends compress by the valve gap 6 being arranged on valve body 1, and valve gap 6 is bolted, corresponding spool 3 is provided with tapped hole, between sleeve 4 tops and valve body 1, by static seal 5, seals.Sleeve 4 is provided with perforate, for fluid, pass through, in it, be provided with spool 3, spool 3 upper ends are connected with valve rod 7, between spool 3 bottoms and valve seat 2, be provided with the first seal ring 12, between spool 3 tops and sleeve 4, be provided with the second seal ring 14, the first seal ring 12 is got negative common difference and is installed, the second seal ring 14 is got plus tolerance and is installed, spool 3 upper end edge peripheries are provided with a graphite annulus 11, and graphite annulus 11 outer side surfaces are against on sleeve 4 inwalls, and its fit system is interference fit, graphite annulus 11 tops are provided with and compress end cap 10, compress end cap 10 and are fixed on spool 3 by hold-down bolt 9.Spool 3 has equalizing orifice 8 along circumferential arrangement, by equalizing orifice 8, a small amount of liquid leaking is stayed in equalizing orifice 8, reduces the pressure reduction of spool 3 both sides, makes the unlatching of spool 3 more smooth and easy.
This cage equilibrium valve, by graphite annulus 11 is set, has reduced original the first seal ring 12, the second seal ring 12 difficulty of processing, cuts down finished cost; By graphite annulus 11, make up top seal, thereby improved whole sealability; By the leading role of graphite annulus 11, improved the stability of spool 3 operations; Can on original spool 3 bases, improve, retain original spool 3 structures, processing is simple, and applicability is good; By the mode that adopts sleeve 4 directly valve seat 2 to be pressed on valve body 1, replace the mode that original valve seat 2 is connected with valve body 1 by screw thread, reduce maintenance cost.
Claims (6)
1. a cage equilibrium valve, comprise valve body (1) and be arranged on the valve seat (2) in valve body (1), sleeve (4), in sleeve (4), be provided with spool (3), spool (3) upper end is connected with valve rod (7), valve gap (6) is equipped with in valve body (1) top, between spool (3) bottom and valve seat (2), be provided with the first seal ring (12), between spool (3) top and sleeve (4), be provided with the second seal ring (14), it is characterized in that: the first seal ring (12) is got negative common difference and installed, the second seal ring (14) is got plus tolerance and is installed, spool (3) upper end edge periphery is provided with a graphite annulus (11), graphite annulus (11) outer side surface is against on sleeve (4) inwall, its top is provided with and compresses end cap (10), compressing end cap (10) is fixed on spool (3).
2. cage equilibrium valve according to claim 1, is characterized in that: described graphite annulus (11) and sleeve (4) inwall interference fit.
3. cage equilibrium valve according to claim 1, is characterized in that: it is upper that described compression end cap (10) is fixed on spool (3) by hold-down bolt (9), and corresponding spool (3) is provided with tapped hole.
4. cage equilibrium valve according to claim 1, is characterized in that: described spool (3) has equalizing orifice (8) along circumferential arrangement.
5. according to the arbitrary described cage equilibrium valve of claim 1～4, it is characterized in that: it is upper that described valve seat (2) is fixed on valve body (1) by sleeve (4), and sleeve (4) upper end is fixed and clamped by valve gap (6).
6. cage equilibrium valve according to claim 5, is characterized in that: between described valve seat (2) lower end and valve body (1), be provided with pad (13), between sleeve (4) top and valve body (1), be provided with static seal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312440.6U CN203948668U (en) | 2014-06-12 | 2014-06-12 | Cage equilibrium valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312440.6U CN203948668U (en) | 2014-06-12 | 2014-06-12 | Cage equilibrium valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948668U true CN203948668U (en) | 2014-11-19 |
Family
ID=51890705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420312440.6U Expired - Fee Related CN203948668U (en) | 2014-06-12 | 2014-06-12 | Cage equilibrium valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948668U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299238A (en) * | 2015-08-14 | 2016-02-03 | 南通市电站阀门有限公司 | Sleeve type regulating valve combination valve plug |
| CN109373000A (en) * | 2019-01-02 | 2019-02-22 | 波普科技(唐山)有限公司 | Piston valve |
| CN111750123A (en) * | 2019-03-29 | 2020-10-09 | 中核苏阀科技实业股份有限公司 | A valve core assembly and regulating valve suitable for high temperature working conditions |
| CN111895114A (en) * | 2020-07-25 | 2020-11-06 | 浙江中德自控科技股份有限公司 | Axial-flow type single-seat valve with valve core impurity removal and labor saving functions |
-
2014
- 2014-06-12 CN CN201420312440.6U patent/CN203948668U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299238A (en) * | 2015-08-14 | 2016-02-03 | 南通市电站阀门有限公司 | Sleeve type regulating valve combination valve plug |
| CN109373000A (en) * | 2019-01-02 | 2019-02-22 | 波普科技(唐山)有限公司 | Piston valve |
| CN111750123A (en) * | 2019-03-29 | 2020-10-09 | 中核苏阀科技实业股份有限公司 | A valve core assembly and regulating valve suitable for high temperature working conditions |
| CN111895114A (en) * | 2020-07-25 | 2020-11-06 | 浙江中德自控科技股份有限公司 | Axial-flow type single-seat valve with valve core impurity removal and labor saving functions |
| CN111895114B (en) * | 2020-07-25 | 2021-08-24 | 浙江中德自控科技股份有限公司 | Axial-flow type single-seat valve with valve core impurity removal and labor saving functions |
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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 |