CN110296247B - Double-seal regulating valve - Google Patents
Double-seal regulating valve Download PDFInfo
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- CN110296247B CN110296247B CN201910654524.5A CN201910654524A CN110296247B CN 110296247 B CN110296247 B CN 110296247B CN 201910654524 A CN201910654524 A CN 201910654524A CN 110296247 B CN110296247 B CN 110296247B
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- valve
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- valve seat
- pressure
- valve body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/26—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in either direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a double-sealing regulating valve, which comprises a valve body, wherein an inlet and an outlet are arranged in an inner cavity of the valve body, a guide sleeve with a circular tubular bottom is arranged at the top of the inner cavity of the valve body, a pressure regulating device is arranged at the left part of the inner cavity of the guide sleeve, a valve clack with an upper guide structure and a lower guide structure formed by an excircle and an inner wall of the guide sleeve is arranged at the lower part of the inner cavity of the guide sleeve, a piston cavity is formed in the inner cavity of the guide sleeve above the valve clack and at the right side of the pressure regulating device, a pressurizing hole is arranged below the pressure regulating device, the left side and the right side of the pressure regulating device are respectively communicated with external atmosphere and the piston cavity, the pressure regulating device can move leftwards or rightwards according to the medium pressure in the piston cavity, and a backflow hole communicated with, Valve clack, outer disk seat, belleville spring, interior disk seat, uide bushing and backward flow hole have double seal's advantage when using the governing valve.
Description
Technical Field
The invention relates to the technical field of regulating valves, in particular to a double-seal regulating valve.
Background
In the automatic control of modern factory, the governing valve plays very important role, the production of these factories depends on the medium that is flowing correctly distributes and controls, when the user uses the governing valve, high pressure medium is pressed into the low pressure medium via the governing valve, the use is gone back to the process line, when the process line pauses, then the medium pressure of governing valve exit can keep rising, and when medium pressure rose certain value, the valve clack sealing surface of governing valve contacts with the valve seat sealing surface, because its sealed specific pressure is less, thereby lead to the governing valve leakproofness poor, the medium of governing valve import side still can leak to the governing valve exit side, governing valve exit side medium pressure can keep rising, easily form accident such as governing valve exit side pipeline rupture or explosion.
Disclosure of Invention
The invention aims to provide a double-seal regulating valve which has the advantages of double sealing and solves the problem of poor sealing performance of the conventional regulating valve.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a double sealing governing valve, includes the valve body, its characterized in that: the bottom of the inner cavity of the valve body is communicated with an inlet, the right side of the inner cavity of the valve body is communicated with an outlet, the top of the inner cavity of the valve body is provided with a guide sleeve with a circular tubular bottom, the left part of the inner cavity of the guide sleeve is provided with a pressure regulating device, the lower part of the inner cavity of the guide sleeve is provided with a valve flap with an excircle and an inner wall forming an upper guide structure and a lower guide structure, the inner cavity of the guide sleeve forms a piston cavity above the valve flap and at the right side of the pressure regulating device, a pressurizing hole is arranged below the pressure regulating device, the left side and the right side of the pressure regulating device are respectively communicated with the outside atmosphere and the piston cavity, the pressure regulating device can move leftwards or rightwards according to the medium pressure in the piston cavity, the top of the right side of the piston cavity is provided with, the outer valve seat is arranged outside the inner valve seat, a pressurizing cavity communicated with the pressurizing hole is arranged below the outer valve seat, a disc spring capable of pushing the outer valve seat to move downwards is arranged between the outer valve seat and the valve body, the pressure of medium in the piston cavity rises, when the lower end face of the valve clack presses the upper end face of the inner valve seat, the medium enters the pressurizing cavity through the pressurizing hole to push the outer valve seat to move upwards and make the upper end face of the outer valve seat press the lower end face of the valve clack, at the moment, an annular cavity is formed between the outer valve seat and the inner valve seat below the valve clack, and when the outer valve seat moves upwards, a discharge hole which.
Preferably, the fixed locating plate that is equipped with in uide bushing left part upper end, pressure adjustment device sets up in the locating plate below, pressure adjustment device includes: upper and lower regulating plate and adapter sleeve, the fixed locating plate that is equipped with in uide bushing left part upper end, it forms sliding seal with the locating plate to go up the regulating plate upper end and be connected, lower regulating plate lower extreme forms sliding seal with valve clack up end and is connected, connect and form upper and lower sliding seal through the adapter sleeve between the upper and lower regulating plate and connect, the center department at upper regulating plate inner chamber top inlays and is equipped with vertical compression spring, regulating plate upper end is connected down to vertical compression spring's bottom, the horizontal compression spring that the uide bushing inner wall and lower regulating plate were connected respectively at both ends is transversely provided with in regulating plate left side down.
Preferably, the top of the inner cavity of the valve body is clamped with a valve cover, and threaded holes in threaded connection with fastening bolts are vertically formed in the periphery corresponding to the valve body and the valve cover.
Preferably, the top end of the inlet is communicated with a funnel-shaped chamber, and the funnel-shaped chamber is positioned on the inner side of the inner valve seat.
Preferably, the periphery of the inner cavity of the inlet and the outlet is provided with mounting holes connected with an external process pipeline, and the vertical compression spring and the horizontal compression spring are both made of 620Si2CrVA high-strength spring steel.
Compared with the prior art, the invention has the following beneficial effects:
1. when the regulating valve is used, when the pressure of a medium on the outlet side of the regulating valve rises to a certain value, the medium on the outlet side enters the pressurizing cavity through the pressurizing hole and pushes the outer valve seat to move upwards, the upper end surface of the outer valve seat and the lower end surface of the valve clack form a seal, the medium in the annular cavity is discharged through the discharge hole, the upward acting force of the medium on the valve clack on the outlet side is reduced, the specific pressure of the seal is increased, the tightness of the regulating valve is further enhanced, and a second seal is formed between the outer valve seat and the valve clack, so that the double-tightness is realized in the regulating valve, and the medium can be discharged through the annular cavity and the discharge hole even if the medium leaks between the sealing surface of the inner valve seat and the sealing surface of the valve clack, can not spurt into the governing valve outlet side, then solved the poor problem of current governing valve leakproofness.
2. According to the invention, the top of the valve body can be closed and sealed through the matching of the valve cover and the threaded holes, the pressure relief condition in the piston cavity is avoided, the leaked medium can be discharged through the matching of the annular cavity and the discharge hole, the leaked medium is prevented from bursting into the outlet side, the medium can be provided with a pressure concentration buffer space through the funnel-shaped cavity, the explosion caused by overlarge medium pressure intensity is avoided, the strength of the vertical compression spring and the strength of the transverse compression spring are enhanced through the vertical compression spring and the transverse compression spring which are both made of 620Si2CrVA high-strength spring steel, and the service lives of the vertical compression spring and the transverse compression spring are prolonged.
Drawings
FIG. 1 is a cross-sectional view of the valve of the present invention in a closed position.
Fig. 2 is a sectional view showing the open state of the valve according to the present invention.
Fig. 3 is an enlarged sectional view of the portion a of fig. 1 according to the present invention.
In the figure: 1. a valve body; 2. an inlet; 3. an outlet; 4. a piston cavity; 5. a pressurizing hole; 6. a pressurizing cavity; 7. an upper adjusting plate; 8. a vertical compression spring; 9. a lower adjustment plate; 10. connecting sleeves; 11. a lateral compression spring; 12. a valve flap; 13. an outer valve seat; 14. a belleville spring; 15. an inner valve seat; 16. a guide sleeve; 17. a return orifice; 18. a valve cover; 19. an annular cavity; 20. a bleed aperture.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a double-seal regulating valve comprises a valve body 1, wherein the bottom of the inner cavity of the valve body 1 is communicated with an inlet 2, the right side of the inner cavity of the valve body 1 is communicated with an outlet 3, the top of the inner cavity of the valve body 1 is provided with a guide sleeve 16 with a circular tubular bottom, the left part of the inner cavity of the guide sleeve 16 is provided with a pressure regulating device, the lower part of the inner cavity of the guide sleeve 16 is provided with a valve flap 12 with an outer circle and an inner wall of the guide sleeve 16 forming an upper and a lower guide structures, the inner cavity of the guide sleeve 16 and the parts above the valve flap 12 and on the right side of the pressure regulating device form a piston cavity 4, a pressurizing hole 5 is arranged below the pressure regulating device, the left side and the right side of the pressure regulating device are respectively communicated with external atmosphere and the piston cavity 4, the pressure regulating device can move leftwards or rightwards according to the, an outer valve seat 13 and an inner valve seat 15 are arranged at the position of the valve body 1 between the inlet 2 and the outlet 3 below the valve clack 12, the outer valve seat 13 is arranged at the outer side of the inner valve seat 15, a pressurizing cavity 6 communicated with the pressurizing hole 5 is arranged below the outer valve seat 13, a butterfly spring 14 capable of pushing the outer valve seat 13 to move downwards is arranged between the outer valve seat 13 and the valve body 1, the pressure of a medium in the piston cavity 4 is increased, when the lower end face of the valve clack 12 presses the upper end face of the inner valve seat 15, the medium enters the pressurizing cavity 6 through the pressurizing hole 5 to push the outer valve seat 13 to move upwards and enables the upper end face of the outer valve seat 13 to press the lower end face of the valve clack 12, at the moment, a ring cavity 19 is formed between the outer valve seat 13 and the inner valve seat 15 below the valve clack 12, and.
12 left part upper ends of uide bushing are fixed and are equipped with the locating plate, pressure adjustment device sets up in the locating plate below, pressure adjustment device includes: upper and lower adjusting plate 7, 9 and adapter sleeve 10, the fixed locating plate that is equipped with in 12 left parts upper ends of uide bushing, it forms sliding seal with the locating plate to go up 7 upper ends of adjusting plate, the sliding seal that forms of 9 lower extremes of adjusting plate and valve clack 12 up end is connected down, connect and form upper and lower sliding seal through adapter sleeve 10 between upper and lower adjusting plate 7, 9, the center department at 7 inner chamber tops of upper adjusting plate inlays and is equipped with vertical compression spring 8, adjusting plate 9 upper end is connected down to vertical compression spring 8's bottom, adjusting plate 9 left side transversely is provided with the horizontal compression spring 11 that both ends connect uide bushing 12 inner wall and lower adjusting plate 9 respectively down.
The top of the inner cavity of the valve body 1 is clamped with a valve cover 18, and the periphery corresponding to the valve body 1 and the valve cover 18 is vertically provided with threaded holes in threaded connection with fastening bolts.
When in use, (one): when the regulating valve is in an opening state, high-pressure medium on the inlet 2 side of the regulating valve pushes the valve clack 12 to move upwards, the medium flows out from the outlet 3 side of the regulating valve, meanwhile, the medium on the outlet 3 side enters the piston cavity 4 through the backflow hole 17, the medium pressure in the piston cavity 4 is consistent with the medium pressure on the outlet 3 side of the regulating valve, when the medium pressure on the outlet 3 side is larger than a preset value, the medium in the piston cavity 4 pushes the upper adjusting plate 7, the lower adjusting plate 9 and the connecting sleeve 10 to move leftwards, the area of the upper part of the valve clack 12 subjected to the downward acting force of the medium in the piston cavity 4 is increased, the valve clack 12 subjected to the downward acting force is increased, the valve clack 12 moves downwards, the lower adjusting plate 9 moves downwards relative to the upper adjusting plate 7, under the action of the upper compression spring 8, the lower end of the lower adjusting plate 9 always forms a, that is, the opening height of the regulating valve is reduced, the medium on the inlet 2 side of the regulating valve is reduced to the medium on the outlet 3 side, the medium pressure on the outlet 3 side of the regulating valve and the medium pressure in the piston cavity 4 are reduced, the downward acting force on the valve clack 12 is reduced, the valve clack 12 moves upwards again, in the regulating process, when the medium pressure on the outlet 3 side of the regulating valve reaches a preset value, the upward and downward acting force on the valve clack 12 is as large as that on the valve clack 12, the position of the valve clack 12 is kept stable, and the medium pressure value on the outlet 3 side can be regulated by regulating the compression amount of;
(II): when the regulating valve is in a closed state, the medium pressure at the outlet 3 of the regulating valve can continuously rise, and when the medium pressure exceeds a preset value and rises to a certain value, the medium in the piston cavity 4 pushes the upper regulating plate 7, the lower regulating plate 9 and the connecting sleeve 10 to continuously move left, the pressurizing hole 5 is communicated with the piston cavity 4, the medium in the piston cavity 4 enters the pressurizing cavity 6 through the pressurizing hole 5, the medium in the pressurizing cavity 6 pushes the outer valve seat 13 to move upwards, the upper end of the outer valve seat 13 is kept to press the lower end of the valve flap 12 to form sealing, at the moment, the medium in the annular cavity 19 is discharged through the discharging hole 20, the upward acting area and acting force of the medium at the side of the outlet 3 of the regulating valve below the valve flap 12 are reduced, the sealing specific pressure between the sealing surface of the valve flap 12 and the sealing surface of the inner valve seat 15 is increased, the sealing performance is enhanced, and a second seal, the sealing performance of the regulating valve is further enhanced, and in addition, if medium leakage exists between the sealing surface of the valve clack 12 and the sealing surface of the inner valve seat 15, the leaked medium is discharged through the annular cavity 19 and the discharge hole 20, and the leaked medium cannot enter the outlet 3 of the regulating valve.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a double sealing governing valve, includes the valve body, its characterized in that: the bottom of the inner cavity of the valve body is communicated with an inlet, the right side of the inner cavity of the valve body is communicated with an outlet, the top of the inner cavity of the valve body is provided with a guide sleeve with a circular tubular bottom, the left part of the inner cavity of the guide sleeve is provided with a pressure regulating device, the lower part of the inner cavity of the guide sleeve is provided with a valve flap with an excircle and an inner wall forming an upper guide structure and a lower guide structure, the inner cavity of the guide sleeve forms a piston cavity above the valve flap and at the right side of the pressure regulating device, a pressurizing hole is arranged below the pressure regulating device, the left side and the right side of the pressure regulating device are respectively communicated with the outside atmosphere and the piston cavity, the pressure regulating device can move leftwards or rightwards according to the medium pressure in the piston cavity, the top of the right side of the piston cavity is provided with, the outer valve seat is arranged outside the inner valve seat, a pressurizing cavity communicated with the pressurizing hole is arranged below the outer valve seat, a disc spring capable of pushing the outer valve seat to move downwards is arranged between the outer valve seat and the valve body, the pressure of medium in the piston cavity rises, when the lower end face of the valve clack presses the upper end face of the inner valve seat, the medium enters the pressurizing cavity through the pressurizing hole to push the outer valve seat to move upwards and make the upper end face of the outer valve seat press the lower end face of the valve clack, at the moment, an annular cavity is formed between the outer valve seat and the inner valve seat below the valve clack, and when the outer valve seat moves upwards, a discharge hole which.
2. A dual seal regulator valve in accordance with claim 1, wherein: the fixed locating plate that is equipped with in uide bushing left part upper end, pressure adjustment device sets up in the locating plate below, pressure adjustment device includes: upper and lower regulating plate and adapter sleeve, it forms sliding seal with the locating plate to go up the regulating plate upper end and is connected, lower regulating plate lower extreme forms sliding seal with valve clack up end and is connected, connect and form upper and lower sliding seal through the adapter sleeve between the upper and lower regulating plate and connect, the center department at upper regulating plate inner chamber top inlays and is equipped with vertical compression spring, regulating plate upper end is connected down to vertical compression spring's bottom, the horizontal compression spring who connects uide bushing inner wall and lower regulating plate respectively in both ends is transversely provided with in lower regulating plate left side.
3. A dual seal regulator valve in accordance with claim 1, wherein: the top joint of valve body inner chamber has the valve gap, the corresponding all around screw hole with fastening bolt threaded connection of all vertically seted up of valve body and valve gap.
4. A dual seal regulator valve in accordance with claim 2 wherein: the periphery of the inlet and outlet inner cavities is provided with mounting holes connected with an external process pipeline, and the vertical compression spring and the horizontal compression spring are both made of 620Si2CrVA high-strength spring steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910654524.5A CN110296247B (en) | 2019-07-19 | 2019-07-19 | Double-seal regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910654524.5A CN110296247B (en) | 2019-07-19 | 2019-07-19 | Double-seal regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110296247A CN110296247A (en) | 2019-10-01 |
| CN110296247B true CN110296247B (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910654524.5A Active CN110296247B (en) | 2019-07-19 | 2019-07-19 | Double-seal regulating valve |
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| CN (1) | CN110296247B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3343620C2 (en) * | 1983-12-02 | 1986-09-04 | Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden | Controllable 2-way valve for pressure and flow control of a liquid flow |
| JP4690430B2 (en) * | 2008-02-07 | 2011-06-01 | 株式会社栗本鐵工所 | Constant flow valve |
| JP5190845B2 (en) * | 2009-03-24 | 2013-04-24 | 能美防災株式会社 | Simultaneous release valve |
| CN202629223U (en) * | 2012-04-13 | 2012-12-26 | 四川省简阳市川力机械制造有限责任公司 | Self-power pressure adjusting valve |
| CN202867871U (en) * | 2012-11-22 | 2013-04-10 | 浙江贝尔控制阀门有限公司 | High-temperature high-pressure corrugated-pipe adjusting valve |
| CN206434970U (en) * | 2016-12-29 | 2017-08-25 | 山东海汇环保设备有限公司 | A kind of low pressure sack cleaner deashing device |
| CN106870779B (en) * | 2017-04-05 | 2018-11-23 | 李祥庆 | Protecting against shock lift check valve |
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2019
- 2019-07-19 CN CN201910654524.5A patent/CN110296247B/en active Active
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| CN110296247A (en) | 2019-10-01 |
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Effective date of registration: 20201201 Address after: 310000 Chun Jian Xiang Chun Jian Cun (industrial functional zone), Fuyang District, Hangzhou City, Zhejiang Province Applicant after: Zhejiang Qinghe Industrial Technology Co.,Ltd. Address before: Room 206, No. 167 Nanjiang East Road, Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province Applicant before: Zheng Ziliu |
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