CN101392849B - Amortization type vacuum damage valve - Google Patents
Amortization type vacuum damage valve Download PDFInfo
- Publication number
- CN101392849B CN101392849B CN200810072069XA CN200810072069A CN101392849B CN 101392849 B CN101392849 B CN 101392849B CN 200810072069X A CN200810072069X A CN 200810072069XA CN 200810072069 A CN200810072069 A CN 200810072069A CN 101392849 B CN101392849 B CN 101392849B
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- China
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- valve
- valve rod
- type vacuum
- air inlet
- seal closure
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- Expired - Fee Related
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Abstract
The invention relates to a buffering vacuum breaking valve, which comprises a seal cover communicated with a vacuum chamber through an air intake opening on the lower part of the seal cover, and is characterized in that the seal cover is also provided with an elastic valve for opening and closing the air inlet opening, the elastic valve and the inside of the air inlet opening are in fit seal, and the external end of the seal cover is provided with an unidirectional air intake valve which is communicated with the air inlet opening through the seal cover. The buffering vacuum breaking valve can quickly break the vacuum formed when equipment works, protects the equipment, and needs no auxiliary power and auxiliary facilities.
Description
Technical field
The present invention relates to a kind of Amortization type vacuum damage valve.
Technical background
Vacuum breaker valve is that protection runs on the not impaired a kind of valve of equipment, container or pipe-line system under the vacuum condition; container as water storage system or vapour system; when degree of vacuum surpasses the limiting value that allows; container just holds pressure that can't stand atmosphere and wrecks; allow air to enter container if can open the vacuum breaker valve of closing automatically this moment; the vacuum condition that elimination may occur then can protect equipment not impaired.At present, what generally use is pneumatic or electronic vacuum breaker valve, because of its structure more complicated, needs auxiliary power and accessory, and operational administrative demands strict technology, and therefore is not suitable for various medium-sized and small enterprises.
Summary of the invention
The purpose of this invention is to provide a kind of Amortization type vacuum damage valve, the vacuum that this device forms in the time of can the rapid damage equipment work, protection equipment, and need not auxiliary power and accessory.
Technological scheme of the present invention is achieved in that it comprises seal closure through bottom air inlet openings and vacuum chamber, it is characterized in that: also be provided with an elastic valve that is used to open and close air inlet openings on the described seal closure, the medial extremity fitted seal of described elastic valve and air inlet openings, the outer end of described seal closure is provided with breather cheek valve, and described breather cheek valve is connected with air inlet openings through seal closure.
Advantage of the present invention is that design is unique, and structure is ingenious, long service life; good seal performance; the vacuum that forms in the time of can the rapid damage equipment work, and need not auxiliary power and accessory, be provided with damping device simultaneously and can not wreck because of quick closedown with the protection valve.
Description of drawings
Fig. 1 is the organigram of the embodiment of the invention.
Fig. 2 is the local enlarged diagram of the c among Fig. 1.
Fig. 3 is the local enlarged diagram of the d among Fig. 1.
Embodiment
Below, in conjunction with the accompanying drawings embodiments of the invention are further elaborated.
As shown in Figure 1, the present invention includes seal closure (5) through bottom air inlet openings and vacuum chamber, also be provided with an elastic valve (1) that is used to open and close air inlet openings on the seal closure, the medial extremity fitted seal of elastic valve and air inlet openings, valve is provided with the delta-ring (2) of a stainless steel sealing surface fitted seal that is provided with seal closure, the outer end of seal closure is provided with breather cheek valve, and breather cheek valve is connected with air inlet openings through seal closure.Breather cheek valve is made of intake valve port ball (17), the baffle plate (15) that ball comes off that prevents that faces the guide pin bushing (16) of intake valve port and be positioned at guide pin bushing opening one side.
Above-mentioned seal closure inner chamber is provided with a valve rod cover for seat (8) that is fixed therein the centre, valve rod cover for seat inner chamber is provided with one and acts on the lifting valve rod (6) of elastic valve and make valve seal the Returnning spring of air inlet openings (7), the Returnning spring upper end portion is connected with one and lifting valve rod middle part joining return piston (9), the return piston outboard end be provided with valve rod on the nut (11) that screws of threads engaged, nut keeps in touch by a pad (12) and return piston, the return piston outer ring is embedded with guide ring (10) and waterproof grommet, valve rod cover for seat outboard end middle part is provided with an intake duct, elasticity valve rod outer end is connected with an auxiliary follow up piston (19) that is used to open and close intake duct, the contacted end of auxiliary follow up piston and valve rod cover for seat inner circle wall is provided with the oil sealing apron, is beneficial to fitted seal.Auxiliary follow up piston is socketed on the inner circle wall on the elasticity valve rod and is inlaid with rubber ring, to strengthen the friction between servo-actuated valve and the elasticity valve rod, makes the servo-actuated valve along with the elasticity valve rod moves up and down.The auxiliary follow up piston below is provided with a descending spacing back-up ring (13) that is fixed on the valve rod cover for seat inner circle wall.Descending spacing back-up ring is provided with vent, is fixed on the valve rod cover for seat inner circle wall by a circlip for hole (14).
As shown in Figure 3, above-mentioned valve medial extremity is provided with a upper cover plate (3), the translateral screw of described upper cover plate (4) is fixedlyed connected with valve, described upper cover plate middle part is provided with the big end in an aperture stepped through hole down, the stepped through hole of described valve rod also matches with slotted eye that valve medial extremity middle part is provided with, described valve rod is curved with the lower end surface that the slotted eye bottom surface contacts, described valve rod underpart also is provided with a circular groove, described circular groove is provided with a snap ring (22), and described snap ring is embedded in the big end of stepped through-hole aperture.
As shown in Figure 2, the flanking part of the valve rod cover for seat of above-mentioned return piston upper lateral part is provided with the damping air flue that communicates with the seal closure inner chamber, and described damping air flue is provided with the adjusting air valve that is used to regulate the air flue flow.Regulating air valve comprises the buffering regulation cock (20) of being located at damping air flue outlet side and will cushion regulation cock and be fixed on nut (21) on the valve rod cover for seat outboard end.Its center bottom of buffering regulation cock is processed with a vent, and this vent communicates with the vent that buffering regulation cock side is provided with, and the vent that buffering regulation cock side is provided with communicates with the conduit that valve rod cover for seat outboard end is provided with.When the servo-actuated valve closing, the air in the closed air chamber that forms between servo-actuated valve and the return piston just can be discharged by the damping air flue.By regulating the buffering regulation cock, the vent that changes buffering regulation cock side is hidden the size of part, regulates the size of air displacement simultaneously, thus the closing velocity of regulating valve.
When vacuum chamber formed parital vacuum, valve was opened by the effect of atmospheric pressure, and breather cheek valve also is opened, and air enters vacuum chamber.Simultaneously valve rod along with valve to bottom offset, return piston also along with valve rod to bottom offset, thereby pressure spring makes spring be in confined state.Thereby auxiliary follow up piston is also opened to bottom offset along with valve rod, behind downward displacement one segment distance of servo-actuated valve, is blocked by descending spacing back-up ring and stops to continue to bottom offset.
After air was full of vacuum chamber gradually, the atmospheric pressure that valve is subjected to was more and more littler, when atmospheric pressure during less than the elastic force of spring, return piston be subjected to spring effect and to top offset, thereby drive valve rod to top offset, valve also along with valve rod to top offset.And auxiliary follow up piston is being closed behind top offset one segment distance, and valve was subjected to the effect of the resistance of air in the closed air chamber between auxiliary follow up piston and the return piston and slowly closed this moment, reached the effect that buffering is closed.
Cause when leaking, when the inefficacy of valve seal place because the valve closing of breather cheek valve can prevent to leak.
Claims (7)
1. Amortization type vacuum damage valve, comprise seal closure through bottom air inlet openings and vacuum chamber, it is characterized in that: also be provided with an elastic valve that is used to open and close air inlet openings on the described seal closure, the medial extremity fitted seal of described elastic valve and air inlet openings, the outer end of described seal closure is provided with breather cheek valve, and described breather cheek valve is connected with air inlet openings through seal closure.
2. Amortization type vacuum damage valve according to claim 1, it is characterized in that: described seal closure inner chamber is provided with a valve rod cover for seat that is fixed therein the centre, described valve rod cover for seat inner chamber is provided with one and acts on the lifting valve rod of elastic valve and make elastic valve seal the Returnning spring of air inlet openings, described Returnning spring upper end portion is connected with one and the joining return piston in lifting valve rod middle part, described valve rod cover for seat outboard end middle part is provided with an intake duct, described lifting valve rod outer end is connected with an auxiliary follow up piston that is used to open and close intake duct, and described auxiliary follow up piston below is provided with a descending spacing back-up ring that is fixed on the lift valve pole socket cover inner circle wall.
3. Amortization type vacuum damage valve according to claim 1 and 2 is characterized in that: described breather cheek valve is made of intake valve port ball, the baffle plate that ball comes off that prevents that faces the guide pin bushing of intake valve port and be positioned at guide pin bushing opening one side.
4. Amortization type vacuum damage valve according to claim 2, it is characterized in that: described elastic valve medial extremity is provided with a upper cover plate, the translateral screw of described upper cover plate is fixedlyed connected with elastic valve, described upper cover plate middle part is provided with the big end in an aperture stepped through hole down, described stepped through hole also matches with slotted eye that elastic valve medial extremity middle part is provided with, described lifting valve rod is curved with the lower end surface that the slotted eye bottom surface contacts, described lifting valve rod underpart also is provided with a circular groove, described circular groove is provided with a snap ring, and described snap ring is embedded in the big end of stepped through-hole aperture.
5. Amortization type vacuum damage valve according to claim 1 and 2 is characterized in that: described elastic valve is provided with the delta-ring of a stainless steel sealing surface fitted seal that is provided with seal closure.
6. Amortization type vacuum damage valve according to claim 2, it is characterized in that: the flanking part of the valve rod cover for seat of described return piston upper lateral part is provided with the damping air flue that communicates with the seal closure inner chamber, and described damping air flue is provided with the adjusting air valve that is used to regulate the air flue flow.
7. Amortization type vacuum damage valve according to claim 2 is characterized in that: described return piston outer ring is embedded with guide ring and waterproof grommet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810072069XA CN101392849B (en) | 2008-11-06 | 2008-11-06 | Amortization type vacuum damage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810072069XA CN101392849B (en) | 2008-11-06 | 2008-11-06 | Amortization type vacuum damage valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101392849A CN101392849A (en) | 2009-03-25 |
| CN101392849B true CN101392849B (en) | 2010-08-11 |
Family
ID=40493284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810072069XA Expired - Fee Related CN101392849B (en) | 2008-11-06 | 2008-11-06 | Amortization type vacuum damage valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101392849B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242824B (en) * | 2010-05-14 | 2012-10-24 | 上海一核阀门制造有限公司 | Vacuum breaker valve |
| CN102678426B (en) * | 2011-03-12 | 2014-09-03 | 哈尔滨迅普科技发展有限公司 | Air compression buffering device |
| CN102776917A (en) * | 2011-05-10 | 2012-11-14 | 张伟 | Vacuum suppressor |
| CN104234911B (en) * | 2013-06-08 | 2016-12-28 | 哈尔滨盛迪电力设备有限公司 | Self-centering type air buffer |
| CN104879539B (en) * | 2015-05-13 | 2018-01-26 | 华夏阀门有限公司 | Floater type vacuum breaking valve |
| CN108105432A (en) * | 2017-12-27 | 2018-06-01 | 国网福建省电力有限公司 | Water turbine set air admission valve Valve leakageproofing water-bound |
| CN112283586B (en) * | 2020-10-16 | 2022-09-16 | 浙江华龙巨水暖通科技有限公司 | Vacuum breaker for liquid conveying pipeline |
| CN112268414A (en) * | 2020-10-21 | 2021-01-26 | 衡阳市大宇锌业有限公司 | Prepare boric acid from boron ore and use freeze-drying device |
| CN112855949B (en) * | 2021-01-13 | 2022-08-30 | 一重集团大连工程技术有限公司 | Vacuum breaking device for carbon electrode extruder |
-
2008
- 2008-11-06 CN CN200810072069XA patent/CN101392849B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101392849A (en) | 2009-03-25 |
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Granted publication date: 20100811 Termination date: 20141106 |
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| EXPY | Termination of patent right or utility model |