CN201496568U - Single-seat pressure balance adjusting valve - Google Patents
Single-seat pressure balance adjusting valve Download PDFInfo
- Publication number
- CN201496568U CN201496568U CN2009203042369U CN200920304236U CN201496568U CN 201496568 U CN201496568 U CN 201496568U CN 2009203042369 U CN2009203042369 U CN 2009203042369U CN 200920304236 U CN200920304236 U CN 200920304236U CN 201496568 U CN201496568 U CN 201496568U
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- CN
- China
- Prior art keywords
- valve
- spool
- pressure balance
- seat pressure
- valve body
- 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 single-seat adjusting valve, in particular to a single-seat pressure balance adjusting valve, which includes a valve body, a valve core, a valve rod, a valve cover and a balance spring. The single-seat pressure balance adjusting valve is characterized in that an inlet channel and an outlet channel staggered up and down are arranged in the valve body, the valve seat is arranged in a valve body middle cavity between the inlet channel and an outlet channel and matched with the valve core capable of moving up and down, the valve core is connected with the valve rod, an upper end passes through the valve cover, a gland bush is arranged on the valve cover, a balance spring is arranged between the gland bush and the valve cover, and a plurality of longitudinal balance holes with opening upper ends are formed on the valve core. The single-seat pressure balance adjusting valve is characterized by good sealing effect, low requirement of driving, simple structure, etc.
Description
Technical field
The utility model relates to a kind of single-seat adjusting valve, especially relates to a kind of single seat pressure balance modulating valve.
Background technique
Modulating valve is a kind of regulating controller in the combination instrument, be to produce to carry out one of important step in the process automatic regulating system, it is accepted the output signal of regulation meter and closes and Open valve, reach the isoparametric automatic adjusting of pressure, temperature, flow and liquid level, can be widely used in the automatic adjusting and the telecontrol of chemical industry, oil, metallurgy, electric power, light textile industry.Described modulating valve mainly contains single-seat adjusting valve and sleeve adjusting valve.Single-seat adjusting valve is uneven formula structure, is made up of valve body, valve seat, spool, valve rod, valve gap, stuffing box etc., can accept different control with different actuator's combinations.Valve body and valve seat, valve cover chamber pass through gasket seal, can prevent to leak outside and interior leakage, spool has curvilinear structures such as equal percentage, straight line, spool links to each other with valve rod, and valve rod passes valve gap and can move up and down, and realizes that by stuffing box sealing prevents to leak outside between valve rod and the valve gap, valve rod moves up and down under the effect of actuator, move up and down thereby drive spool, change the Flow area of spool and valve base chamber, thereby reach the purpose of automatic adjusting process parameter.Sleeve adjusting valve is a balance type structure, is made up of valve body, sleeve, spool, valve rod, valve gap, stuffing box etc., can accept different control with different actuator's combinations.Valve body and sleeve, valve cover chamber can prevent to leak outside and interior leakage by gasket seal, and sleeve is one to be similar to cylinder type, is pressed in the valve body lumen by valve gap.Have the window of curves such as equal percentage, straight line on the sleeve wall, spool is contained in the sleeve, and closed realization of valve core sealed cover and sleeve lining sealing surface seals.Spool links to each other with valve rod, valve rod passes valve gap, can move up and down, valve rod and valve cover chamber realize that by stuffing box sealing prevents to leak outside, valve rod moves up and down under the effect of actuator, moves up and down thereby drive spool, change the Flow area between spool and sleeve window, thereby reach the purpose of automatic adjusting process parameter.As publication number is that the Chinese model utility of CN2816510 discloses a kind of cage balance type single-seat adjusting valve, it mainly adopts valve rod to connect with spool, balance ring seat, gimbal, energization ring and sleeve are formed sleeve assembly and are installed on the valve body, the loam cake flange connects loam cake with bolt with valve body, Packing seat, filler, Gland and pressing plate are installed on the valve rod respectively.The utility model is simple, compact and reasonable for structure; Volume is little, and is in light weight, and specified negotiability (CV value) is big, once assembles the up-to-standard rate height, has under the condition of equal driving source, can bear High Pressure Difference and high-leakage grade, greatly reduces the leakage rate of modulating valve; The kinetic noise of modulating valve can be reduced, and the probability of cavitation erosion and cavitation phenomenon generation can be reduced.
But present balanced type modulating valve, because spool has two sealing surfaces, thus when sealing, be easy to generate leakage, thus adjusting function influence, and it is big also to have the valve core driving force requirement simultaneously, is difficult to the occasion of adaptation High Pressure Difference.
Summary of the invention
The utility model mainly be solve that existing in prior technology is leaked easily, driving force requires big etc. technical problem, a kind of good sealing effect is provided, drives the little single seat pressure balance spool formula modulating valve little, simple in structure that requires.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of single seat pressure balance spool formula modulating valve, comprise valve body, spool, valve rod, valve gap and balance spring, it is characterized in that being provided with in the described valve body inlet passage and the outlet passage that staggers up and down, valve body lumen between inlet passage and the outlet passage is provided with valve seat, valve seat and the spool that can move up and down are adaptive, spool links to each other with a valve rod, described valve gap is passed in described upper end, and on valve gap, be provided with a gland, be provided with described balance spring between gland and the valve gap, described spool is provided with the longitudinal balance hole of several upper end open.Spool has equal percentage or linear curve, and the sealing surface of its sealing surface and valve seat coincide and realizes sealing.Flow into equalizing orifice, thereby form balance, seal with seal ring between described balanced type spool cylindrical and described valve gap endoporus with downstream pressure.Spool top is connected with described valve rod outside thread, and is fixed with pivot pin by an internal thread.Valve rod moves up and down under the effect of actuator, thereby reaches the purpose of automatic adjusting process parameter.
As preferably, be provided with a valve cage in the lumen of described valve body, this valve cage separates inlet passage and spool.Valve cage can return the power loss of big fluid, plays sound deadening.
As preferably, the upside of described spool is provided with seal ring, and spool matches with valve gap by the sealing circle.Be sealed in when playing seal action, reduced the wearing and tearing of spool,, reduce maintenance cost to improve the working life of spool.
As preferably, be provided with stuffing box packing between described gland and the balance spring, the both sides up and down of stuffing box packing are respectively equipped with liner and lower liner.
As preferably, described inlet passage, outlet passage and the valve body lumen S-shaped structure that is connected.The structural distribution of S shape can be so that fluid be mobile more smooth and easy, the excessive impact of having avoided fluid to produce in flow process.
The beneficial effect that brings of the present utility model is, solved that existing in prior technology is leaked easily, driving force requires big etc. technical problem, a kind of good sealing effect is provided, drives the little single seat pressure balance spool formula modulating valve little, simple in structure that requires.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: accompanying drawing 1 is a kind of structural representation of the present utility model.The utility model is a kind of single seat pressure balance spool formula modulating valve, comprise valve body, spool 10, valve rod 1, valve gap 3 and balance spring 7, it is characterized in that being provided with in the described valve body inlet passage and the outlet passage that staggers up and down, inlet passage, outlet passage and the valve body lumen S-shaped structure that is connected.Valve body lumen between inlet passage and the outlet passage is provided with valve seat 11, and valve seat and the spool that can move up and down are adaptive, are provided with a valve cage 12 in the lumen of valve body, and this valve cage separates inlet passage and spool.Spool links to each other with a valve rod, and described valve gap is passed in described upper end, and the upside of spool is provided with seal ring 8, and spool matches with valve gap by the sealing circle.And on valve gap, be provided with a gland 2, be provided with described balance spring between gland and the valve gap.Be provided with stuffing box packing 5 between gland and the balance spring, the both sides up and down of stuffing box packing are respectively equipped with liner 4 and lower liner 6.Described spool is provided with the longitudinal balance hole 9 of several upper end open.
The structural distribution of S shape of the present utility model can be so that fluid be mobile more smooth and easy, the excessive impact of having avoided fluid to produce in flow process.Described valve cage compresses valve seat, and described valve gap compresses valve cage, and the valve gap mesopore is provided with stem guiding hole and stuffing box, and described stuffing box bottom is equipped with the filler gland and is compressed.Described spool has equal percentage or linear curve, and the sealing surface of its sealing surface and valve seat coincide and realizes sealing.On the described spool equalizing orifice is arranged, after fluid flows through valve cage, flow into equalizing orifice top, thereby form balance, seal with seal ring between described balanced type spool cylindrical and described valve gap endoporus with downstream pressure.Spool top is connected with described valve rod outside thread, and is fixed with pivot pin by an internal thread, and described valve rod passes the pilot hole and the stuffing box hole of valve gap, and prevents to leak outside with packing seal.Described valve rod moves up and down under the effect of actuator, changes the Flow area between spool and valve cage, thereby reaches the purpose of automatic adjusting process parameter.
So the utlity model has good sealing effect, drive the little features such as little, simple in structure that require.
Claims (8)
1. single seat pressure balance spool formula modulating valve, comprise valve body, spool, valve rod, valve gap and balance spring, it is characterized in that being provided with in the described valve body inlet passage and the outlet passage that staggers up and down, valve body lumen between inlet passage and the outlet passage is provided with valve seat (11), a valve seat and a spool that can move up and down (10) are adaptive, spool links to each other with a valve rod (1), described valve gap (3) is passed in described upper end, and on valve gap, be provided with a gland (2), be provided with described balance spring (7) between gland and the valve gap, described spool is provided with the longitudinal balance hole (9) of several upper end open.
2. single seat pressure balance spool formula modulating valve according to claim 1 is characterized in that being provided with a valve cage (12) in the lumen of described valve body, and this valve cage separates inlet passage and spool.
3. single seat pressure balance spool formula modulating valve according to claim 1 and 2 is characterized in that the upside of described spool is provided with seal ring, and spool matches with valve gap by sealing circle (8).
4. single seat pressure balance spool formula modulating valve according to claim 1 and 2 is characterized in that being provided with between described gland and the balance spring stuffing box packing (5), and the both sides up and down of stuffing box packing are respectively equipped with liner (4) and lower liner (6).
5. single seat pressure balance spool formula modulating valve according to claim 3 is characterized in that being provided with stuffing box packing between described gland and the balance spring, and the both sides up and down of stuffing box packing are respectively equipped with liner and lower liner.
6. single seat pressure balance spool formula modulating valve according to claim 1 and 2 is characterized in that described inlet passage, outlet passage and the valve body lumen S-shaped structure that is connected.
7. single seat pressure balance spool formula modulating valve according to claim 3 is characterized in that described inlet passage, outlet passage and the valve body lumen S-shaped structure that is connected.
8. single seat pressure balance spool formula modulating valve according to claim 4 is characterized in that described inlet passage, outlet passage and the valve body lumen S-shaped structure that is connected
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203042369U CN201496568U (en) | 2009-06-11 | 2009-06-11 | Single-seat pressure balance adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203042369U CN201496568U (en) | 2009-06-11 | 2009-06-11 | Single-seat pressure balance adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496568U true CN201496568U (en) | 2010-06-02 |
Family
ID=42439775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203042369U Expired - Fee Related CN201496568U (en) | 2009-06-11 | 2009-06-11 | Single-seat pressure balance adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496568U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563090A (en) * | 2011-12-16 | 2012-07-11 | 杭州春江阀门有限公司 | Sleeve type stop valve |
| CN102588613A (en) * | 2012-02-22 | 2012-07-18 | 浙江德卡控制阀仪表有限公司 | Balance cage type single-seat regulation valve |
| CN111750167A (en) * | 2019-03-28 | 2020-10-09 | 株式会社鹭宫制作所 | Temperature expansion valve and refrigeration cycle system |
-
2009
- 2009-06-11 CN CN2009203042369U patent/CN201496568U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563090A (en) * | 2011-12-16 | 2012-07-11 | 杭州春江阀门有限公司 | Sleeve type stop valve |
| CN102588613A (en) * | 2012-02-22 | 2012-07-18 | 浙江德卡控制阀仪表有限公司 | Balance cage type single-seat regulation valve |
| CN111750167A (en) * | 2019-03-28 | 2020-10-09 | 株式会社鹭宫制作所 | Temperature expansion valve and refrigeration cycle system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG YONGSHENG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHEJIANG YSMETER CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 311407 Zhejiang Industrial Zone, Fuyang City, Sichuan Province Patentee after: ZHEJIANG YONGSHENG TECHNOLOGY CO., LTD. Address before: 311407 Zhejiang Yongsheng Industrial Instrument Park Co., Ltd., Zhejiang, Fuyang Patentee before: ZHEJIANG YONGSHENG INSTRUMENTATION CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20170611 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |