CN205155278U - Balanced high accuracy governing valve of bellows sealing cage - Google Patents
Balanced high accuracy governing valve of bellows sealing cage Download PDFInfo
- Publication number
- CN205155278U CN205155278U CN201521000471.9U CN201521000471U CN205155278U CN 205155278 U CN205155278 U CN 205155278U CN 201521000471 U CN201521000471 U CN 201521000471U CN 205155278 U CN205155278 U CN 205155278U
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- valve
- cage
- bottom flange
- bonnet
- spool
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Abstract
The utility model discloses a balanced high accuracy governing valve of bellows sealing cage, fix cage, case, stem guide, lower valve gap, valve rod, bellows part, go up valve gap, filler pad, filler, gland, support and actuating mechanism including valve body, disk seat, the fixed cage of disk seat adopts the integrated configuration of double -beat drop valve and cage valve, and bellows part lower extreme is connected with the valve rod, and the bellows part is fixed at last valve gap under and between the valve gap. The device adopts case and disk seat to fix discontiguous structure between the cage and adopt the stem guide who is provided with the oblique angle, can prevent the dead phenomenon of card, adopt the disk seat of the integrated configuration of double -beat drop valve and cage valve to fix the cage, have the performance of stronger equilibrium pressure, anti gas corrosion and noise reduction, the the device flow control precision is high, allows pressure differential high, and operating stability is good, can adapt to different complex operating condition, and application scope is wide, the the device fault rate is low, and the leakproofness is good, and the anti -vibration goes with torsion performance, long service life.
Description
Technical field
The utility model relates to a kind of modulating valve, specifically a kind of sylphon seal cage balance highi degree of accuracy modulating valve.
Background technique
Modulating valve be in fluid delivery system for controlling the controlling component of the direction of fluid, pressure and flow, there is cut-off, adjustment, water conservancy diversion, prevent the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.According to material classification, modulating valve is divided into cast iron modulating valve, stainless steel modulating valve, plastics modulating valve and dual phase steel modulating valve etc.In recent years, the develop rapidly of domestic modulating valve industry, the product structure type of each modulating valve producer emerges in an endless stream.But domestic existing modulating valve is perfect not to the utmost in the structural design for severe service, especially in the operating mode for granule medium and High Pressure Difference.For the common operating mode containing granule medium, general employing plunger type single seat sealing configuration, although can ensure that sealing there will be stuck phenomenon; And for High Pressure Difference operating mode, the general cage type single seat sealing configuration that adopts, although normally work under High Pressure Difference operating mode can be ensured, can not noise-decreasing.
Model utility content
The purpose of this utility model is to provide a kind of sylphon seal cage to balance highi degree of accuracy modulating valve, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme:
A kind of sylphon seal cage balance highi degree of accuracy modulating valve, comprises valve body, valve seat fixing caging, spool, stem guiding, bottom flange, valve rod, bellows components, bonnet, Packing seat, filler, Gland, support and actuator, described valve seat fixing caging adopts the composite structure of double seated valve and cage valve, valve body is connected by screw bolt and nut with bottom flange, valve seat fixing caging is fixed by pad and valve body and bottom flange, spool is provided with screw thread, spool and valve rod are threaded connection and adopt pin to fix, contactless between spool and valve seat fixing caging, guide sleeve is provided with in bottom flange, close sliding contact is adopted between guide sleeve and stem guiding, valve rod is connected with stem guiding, stem guiding is provided with for preventing stuck oblique angle, stem guiding is provided with bellows components, and the lower end of bellows components is connected with valve rod, and pad is passed through in the upper end of bellows components, screw bolt and nut is fixed between bonnet and bottom flange, bellows components, bonnet and bottom flange form the reliable sealing structure of zero leakage, and it is inner and adopt Gland pretension that Packing seat and filler are installed in bonnet, and bonnet to be connected with actuator by support and to adopt screw bolt and nut to fix.
As further program of the utility model: valve rod is connected by the mode of welding with stem guiding.
As further program of the utility model: guide sleeve and bottom flange are fixed by socket head screw.
As further program of the utility model: be provided with stuffing box in bonnet, Packing seat and filler are installed in stuffing box.
As further program of the utility model: spool adopts high-purity plunger piston spherical structure.
Compared with prior art, the beneficial effects of the utility model are: this device adopts discontiguous structure between spool and valve seat fixing caging and adopts the stem guiding being provided with oblique angle, can prevent stuck phenomenon; Adopt the valve seat fixing caging of the composite structure of double seated valve and cage valve, have the performance of stronger balance pressure, anti-gas attack and reduction noise; This device Flow-rate adjustment precision is high, and permissible pressure is high, good operation stability, can adapt to different complex working conditions, applied widely; This plant failure rate is low, good airproof performance, anti-vibration and twisting property good, long service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of sylphon seal cage balance highi degree of accuracy modulating valve.
Wherein: 1-valve body, 2-valve seat fixing caging, 3-spool, 4-stem guiding, 5-guide sleeve, 6-bottom flange, 7-valve rod, 8-bellows components, 9-bonnet, 10-Packing seat, 11-filler, 12-Gland, 13-support, 14-actuator.
Embodiment
Be described in more detail below in conjunction with the technological scheme of embodiment to this patent.
Refer to Fig. 1, a kind of sylphon seal cage balance highi degree of accuracy modulating valve, comprise valve body 1, valve seat fixing caging 2, spool 3, stem guiding 4, bottom flange 6, valve rod 7, bellows components 8, bonnet 9, Packing seat 10, filler 11, Gland 12, support 13 and actuator 14, described valve seat fixing caging 2 adopts the composite structure of double seated valve and cage valve, valve body 1 is connected by screw bolt and nut with bottom flange 6, valve seat fixing caging 2 is fixed by pad and valve body 1 and bottom flange 6, spool 3 is provided with screw thread, spool 3 and valve rod 7 are threaded connection and adopt pin to fix, contactless between spool 3 and valve seat fixing caging 2, guide sleeve 5 is provided with in bottom flange 6, close sliding contact is adopted between guide sleeve 5 and stem guiding 4, valve rod 7 is connected with stem guiding 4, stem guiding 4 is provided with for preventing stuck oblique angle, stem guiding 4 is provided with bellows components 8, the lower end of bellows components 8 is connected with valve rod 7, pad is passed through in the upper end of bellows components 8, screw bolt and nut is fixed between bonnet 9 and bottom flange 6, bellows components 8, bonnet 9 and bottom flange 6 form the reliable sealing structure of zero leakage, Packing seat 10 and filler 11 are installed in bonnet 9 inside and adopt Gland 12 pretension, bonnet 9 to be connected with actuator 14 by support 13 and to adopt screw bolt and nut to fix.Valve rod 7 is connected by the mode of welding with stem guiding 4.Guide sleeve 5 and bottom flange 6 are fixed by socket head screw.Be provided with stuffing box in bonnet 9, Packing seat 10 and filler 11 are installed in stuffing box.Spool 3 adopts high-purity plunger piston spherical structure.
Working principle of the present utility model is: medium enters modulating valve, and valve seat fixing caging 2 seals respectively with two sealing surfaces of spool 3, and now modulating valve cuts out; When actuator's 14 times room air inlets, overcome reactive spring force, frictional force and unbalanced force to make valve rod 7 moves, bellows components 8 lower end is moved together along with valve rod 7, bellows components 8 is compressed, now modulating valve is opened, medium enters valve body 1 top by valve seat fixing caging 2, and while moving on valve rod 7 afterwards, medium enters valve body 1 bottom by valve body 1 top by the equal percentage adjustment of plunger type single seat spool 3, completes Flow-rate adjustment.The certain media being entered valve body by valve seat fixing caging 2 flows into bottom flange 6 inside by the pod apertures of stem guiding 4 inside, plays balance pressure effect; Bellows components 8 lower end is welded with valve rod 7, can form sealing reliably; Bellows components 8 upper end is fixed between bottom flange 6 and bonnet 9 by pad, bolt and nut, forms sealing, makes medium cannot to external leakage; When spool 3 moves up and down and contactless between valve seat fixing caging 2, non-cleaning (having fine particle) medium lower valve core 3 can not be stuck, and be close sliding contact between stem guiding 4 and the guide sleeve 5 being fixed on bottom flange 6 inside, spool 3 can be made to stablize, prevent vibration; Also can prevent the torsion of bellows components 8 simultaneously; Stem guiding 4 is provided with oblique angle, can enter between stem guiding 4 and guide sleeve 5 by the particle effectively reduced in medium, prevents stuck phenomenon.This device adopts discontiguous structure between spool 3 and valve seat fixing caging 2 and adopts the stem guiding 4 being provided with oblique angle, can prevent stuck phenomenon; Adopt the valve seat fixing caging 2 of the composite structure of double seated valve and cage valve, have the performance of stronger balance pressure, anti-gas attack and reduction noise; This device Flow-rate adjustment precision is high, and permissible pressure is high, good operation stability, can adapt to different complex working conditions, applied widely; This plant failure rate is low, good airproof performance, anti-vibration and twisting property good, long service life.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned mode of execution, in the ken that one skilled in the relevant art possesses, can also makes a variety of changes under the prerequisite not departing from this patent aim.
Claims (5)
1. a sylphon seal cage balance highi degree of accuracy modulating valve, is characterized in that, comprise valve body, valve seat fixing caging, spool, stem guiding, bottom flange, valve rod, bellows components, bonnet, Packing seat, filler, Gland, support and actuator, described valve seat fixing caging adopts the composite structure of double seated valve and cage valve, valve body is connected by screw bolt and nut with bottom flange, valve seat fixing caging is fixed by pad and valve body and bottom flange, spool is provided with screw thread, spool and valve rod are threaded connection and adopt pin to fix, contactless between spool and valve seat fixing caging, guide sleeve is provided with in bottom flange, close sliding contact is adopted between guide sleeve and stem guiding, valve rod is connected with stem guiding, stem guiding is provided with for preventing stuck oblique angle, stem guiding is provided with bellows components, and the lower end of bellows components is connected with valve rod, and pad is passed through in the upper end of bellows components, screw bolt and nut is fixed between bonnet and bottom flange, bellows components, bonnet and bottom flange form the reliable sealing structure of zero leakage, and it is inner and adopt Gland pretension that Packing seat and filler are installed in bonnet, and bonnet to be connected with actuator by support and to adopt screw bolt and nut to fix.
2. sylphon seal cage balance highi degree of accuracy modulating valve according to claim 1, it is characterized in that, described valve rod is connected by the mode of welding with stem guiding.
3. sylphon seal cage balance highi degree of accuracy modulating valve according to claim 1 and 2, it is characterized in that, described guide sleeve and bottom flange are fixed by socket head screw.
4. sylphon seal cage balance highi degree of accuracy modulating valve according to claim 3, it is characterized in that, be provided with stuffing box in described bonnet, Packing seat and filler are installed in stuffing box.
5. sylphon seal cage balance highi degree of accuracy modulating valve according to claim 4, it is characterized in that, described spool adopts high-purity plunger piston spherical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000471.9U CN205155278U (en) | 2015-12-07 | 2015-12-07 | Balanced high accuracy governing valve of bellows sealing cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000471.9U CN205155278U (en) | 2015-12-07 | 2015-12-07 | Balanced high accuracy governing valve of bellows sealing cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205155278U true CN205155278U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521000471.9U Expired - Fee Related CN205155278U (en) | 2015-12-07 | 2015-12-07 | Balanced high accuracy governing valve of bellows sealing cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205155278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224628A (en) * | 2016-08-26 | 2016-12-14 | 杭州远控自动化技术有限公司 | A kind of regulation valve and accuracy control method thereof |
-
2015
- 2015-12-07 CN CN201521000471.9U patent/CN205155278U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224628A (en) * | 2016-08-26 | 2016-12-14 | 杭州远控自动化技术有限公司 | A kind of regulation valve and accuracy control method thereof |
| CN106224628B (en) * | 2016-08-26 | 2018-09-11 | 杭州远控自动化技术有限公司 | A kind of regulating valve and its accuracy control method |
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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: 20160413 Termination date: 20171207 |