CN103383013A - Check valve allowing external adjustment of closing positions of valve plate - Google Patents
Check valve allowing external adjustment of closing positions of valve plate Download PDFInfo
- Publication number
- CN103383013A CN103383013A CN 201310346373 CN201310346373A CN103383013A CN 103383013 A CN103383013 A CN 103383013A CN 201310346373 CN201310346373 CN 201310346373 CN 201310346373 A CN201310346373 A CN 201310346373A CN 103383013 A CN103383013 A CN 103383013A
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- China
- Prior art keywords
- valve
- valve plate
- sealing surface
- closing positions
- limited lever
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- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The invention discloses a check valve allowing external adjustment of closing positions of a valve plate. The check valve allowing external adjustment of the closing positions of the valve plate comprises a valve body, the valve plate and a valve plate limitation rod; the internal wall of the valve body is provided with an upper protruding sealing surface and a lower protruding sealing surface; the upper protruding sealing surface, the lower protruding sealing surface and the sealing surface of the valve plate are closed; designing the calve body wall at the position of the lower protruding sealing surface to be externally concave and convex; a threaded hole which is used for installing the valve plate limitation rod is formed at the bottom of a groove; the sealing surface end of the valve plate limitation rod is provided with an inclined surface with small top and large bottom; the other end of the valve plate limitation rod is provided with a connecting rod which is provided with threads and fastened on the external of the valve body through a lock nut. An O-shaped sealing ring is arranged on a valve plate limitation rod portion which is arranged inside the groove. The check valve allowing external adjustment of the closing positions of the valve plate has the advantage of enabling the closing positions of the valve plate to be adjusted outside the valve through a limitation device due to the fact that the limitation device is arranged on the valve body, enabling the valve to be reliably sealed when the valve is abraded after long time utilization due to adjustment outside the valve and enabling troubles of disassembling the valve from channels and reinstalling to be avoided.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of outside safety check of adjusting the valve plate closed position.
Background technique
The butterfly check valve of rubber seal is widely used in the industrial pipeline system, because rubber has good elasticity, closes the position in order to prevent valve plate under the effect of pressure medium, is provided with a limit stoper in the inside of valve.as shown in Figures 1 to 4, schematic diagram when Fig. 1 is the prior art valve opening, schematic diagram when Fig. 2 is the prior art valve closing, Fig. 3 is the complete accessible enlarged diagram of prior art valve sealing face, this safety check comprises: valve body 10, be arranged on valve shaft 30 and rotate around it the valve plate 20 of folding valve, with lower convexity surface of contact 70 in upper protruding surface of contact 60 and valve body in the valve body of valve plate top surface of contact 40 closures, also be included in the valve plate position-limited lever 80 that in valve body, lower convexity surface of contact 70 sides arrange, the side of described valve plate position-limited lever 80 stops valve plate 20 to continue to rotate to the direction of closing after having a projection and valve plate contacts side surfaces face 50 closed.but after valve uses a period of time, seepage can appear in sealing place, as shown in Figure 4, it is the enlarged diagram of prior art valve seal facial disfigurement or wearing and tearing contact, if at this moment valve plate can rotate a small angle to the direction of closing again, valve just can seal tight, because the limit stoper of valve internal can't be adjusted, so valve can only disassemble from pipeline, fixedly limit stoper in valve is keeped in repair, can only change the face that little fixedly limit stoper contacts with valve plate, make troubles to maintenance work, if the words of serious wear between valve sealing face, will scrap because repairing through keeping in repair several times late gate.
Summary of the invention
Technical problem to be solved by this invention is to provide and a kind ofly makes valve plate can be again rotate a small angle to the direction of closing by the outside adjustment, and the safety check of valve plate closed position is adjusted in the outside that valve again can reliable sealing.
The technical solution adopted in the present invention is: a kind of outside safety check of adjusting the valve plate closed position, comprise: valve body, valve plate, valve plate position-limited lever, described valve interior wall is provided with upper protruding sealing surface and the lower convexity sealing surface with the sealing surface closure of described valve plate, the valve interior wall that described lower convexity sealing surface place is set is outwards concavo-convex, and its bottom portion of groove is provided with the tapped hole that described valve plate position-limited lever is installed; Described valve plate position-limited lever sealing surface end is up-small and down-big inclined-plane, the other end be threaded and by locking nut at the outside fastened connecting rod of valve body.Be provided with O-ring seals at the valve plate position-limited lever position that is positioned at described groove.
The invention has the beneficial effects as follows: the limit stoper that is provided with on valve body can be in the outside closed position of adjusting valve plate of valve, after valve uses a period of time wearing and tearing to occur, by adjusting valve is outside, valve is sealed, and structure is ingenious, reasonable, and is simple to operate, avoid valve is disassembled from pipeline and repair, moreover, also extend the working life of valve, saved capital.
Description of drawings
Schematic diagram when Fig. 1 is the prior art valve opening;
Schematic diagram when Fig. 2 is the prior art valve closing;
Fig. 3 is the complete accessible enlarged diagram of prior art valve sealing face;
Fig. 4 is the enlarged diagram of prior art valve seal facial disfigurement or wearing and tearing contact;
Fig. 5 is valve mechanism schematic diagram of the present invention;
Sealing surface enlarged diagram when Fig. 6 is valve closing of the present invention;
Fig. 7 is the sealing surface enlarged diagram of valve seal facial disfigurement of the present invention or state of wear.
Fig. 8 is the position view that valve of the present invention is adjusted limit stoper;
Sealing surface enlarged diagram when Fig. 9 is valve closing after valve of the present invention is adjusted.
Wherein:
1, valve body 2, valve plate 3, position-limited lever 4, O-ring seals
5, lower convexity surface of contact in locking nut 6, groove 7, valve body
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in the figure, Fig. 5 is valve mechanism of the present invention, and the limit stoper of valve can externally be adjusted, and Fig. 8 is the position that valve of the present invention is adjusted limit stoper.A kind of outside safety check of adjusting the valve plate closed position, comprise: valve body 1, valve plate 2, valve plate position-limited lever 3, described valve body 1 inwall is provided with upper protruding sealing surface and the lower convexity sealing surface with the sealing surface closure of described valve plate 2, the valve interior wall that described lower convexity sealing surface 7 places are set is outwards concavo-convex, and its groove 6 bottoms are provided with the tapped hole that described valve plate position-limited lever 3 is installed; Described valve plate position-limited lever 3 sealing surface ends are up-small and down-big inclined-plane, the other end is be threaded and pass through locking nut 5 at the outside fastened connecting rod of valve body 1, the sealing surface end is owing to being up-small and down-big inclined-plane, along with adjusting valve plate position-limited lever 3 down slidings, just produced the space between the sealing surface of valve plate position-limited lever 3 and valve plate 2 combinations, can continue the switch of changeover valve this moment, until two sealing surfaces on valve plate 2 respectively can be closed with valve plate position-limited lever 3 sealing surfaces, lower convexity sealing surface.phase diagram when Fig. 6 is valve mechanism valve closing of the present invention, phase diagram when producing distortion or wearing and tearing when Fig. 7 is valve mechanism valve seal of the present invention, Fig. 9 is that valve mechanism of the present invention produces distortion or when wearing and tearing when valve seal, continue throttle down, obtain good sealing state figure, valve plate position-limited lever 3 can move up and down when rotating, when sealing surface produces distortion or wearing and tearing when valve uses, rotary valve plate position-limited lever 3 makes it to move down, because valve plate position-limited lever 3 sealing surface ends have up-small and down-big inclined-plane, make between valve plate position-limited lever 3 and valve plate 2 and just do not contact, valve plate 2 can continue to close, allow sealing surface and valve plate position-limited lever 3 sealing surfaces of valve plate reach sealing, eliminated the impact due to the distortion of sealing surface distortion or wearing and tearing generation.Be provided with O-ring seals at valve plate position-limited lever 3 positions that are positioned at described groove 6, prevent the generation that leak at the tapped hole place.
Employing can need not be dismantled from pipeline when leaking appears in valve sealing face at the outside valve plate position-limited lever of regulating of valve body, can adjust in the valve outside, can make valve plate continue to close.
Claims (2)
1. outside safety check of adjusting the valve plate closed position, comprise: valve body (1), valve plate (2), valve plate position-limited lever (3), described valve body (1) inwall is provided with upper protruding sealing surface and the lower convexity sealing surface with the sealing surface closure of described valve plate (2), it is characterized in that: the valve interior wall that described lower convexity sealing surface (7) locates is set outwards concavo-convex, its groove (6) bottom is provided with the tapped hole that described valve plate position-limited lever (3) is installed; Described valve plate position-limited lever (3) sealing surface end is up-small and down-big inclined-plane, and the other end is for being threaded and passing through locking nut (5) at the outside fastened connecting rod of valve body (1).
2. the outside safety check of adjusting the valve plate closed position according to claim 1 is characterized in that: be provided with O-ring seals at valve plate position-limited lever (3) position that is positioned at described groove (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310346373 CN103383013A (en) | 2013-08-09 | 2013-08-09 | Check valve allowing external adjustment of closing positions of valve plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310346373 CN103383013A (en) | 2013-08-09 | 2013-08-09 | Check valve allowing external adjustment of closing positions of valve plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103383013A true CN103383013A (en) | 2013-11-06 |
Family
ID=49490889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310346373 Pending CN103383013A (en) | 2013-08-09 | 2013-08-09 | Check valve allowing external adjustment of closing positions of valve plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103383013A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108190064A (en) * | 2018-03-05 | 2018-06-22 | 拾谷鸟科技（深圳）有限公司 | A kind of front open type scale hooper and packing machine |
| CN112460273A (en) * | 2020-11-24 | 2021-03-09 | 浙江尔格科技股份有限公司 | Butterfly valve, valve plate of butterfly valve and connection structure of butterfly valve plate and rotating shaft |
-
2013
- 2013-08-09 CN CN 201310346373 patent/CN103383013A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108190064A (en) * | 2018-03-05 | 2018-06-22 | 拾谷鸟科技（深圳）有限公司 | A kind of front open type scale hooper and packing machine |
| CN112460273A (en) * | 2020-11-24 | 2021-03-09 | 浙江尔格科技股份有限公司 | Butterfly valve, valve plate of butterfly valve and connection structure of butterfly valve plate and rotating shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131106 |
|
| WD01 | Invention patent application deemed withdrawn after publication |