CN2584981Y - Lifting slowly closed check valve - Google Patents
Lifting slowly closed check valve Download PDFInfo
- Publication number
- CN2584981Y CN2584981Y CN 02286257 CN02286257U CN2584981Y CN 2584981 Y CN2584981 Y CN 2584981Y CN 02286257 CN02286257 CN 02286257 CN 02286257 U CN02286257 U CN 02286257U CN 2584981 Y CN2584981 Y CN 2584981Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sliding sleeve
- sliding bar
- slide bar
- sliding
- 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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- Check Valves (AREA)
Abstract
The utility model relates to a lifting type closed check valve which comprises a valve body, a valve seat, a valve clack positioned at an outlet of the valve seat, and a valve cover connected with the valve body in a separable mode. The utility model is characterized in that the valve clack is fixed on the end face of the tail end of a sliding bar positioned in the outlet side of the valve seat, the head part of the sliding bar is inserted into a sliding sleeve positioned at the inner side of the valve cover, and a water injecting hole is arranged on the side wall of the hollow cavity of the sliding bar. One end of a spring is positioned in the hollow cavity of the sliding bar, and the other end of the spring abuts against the sliding sleeve. The valve clack is fixed on the sliding bar, the sliding bar is inserted into the sliding sleeve, and the sliding bar can slide in the sliding sleeve through a spring; the fitting structure of the sliding bar and the sliding sleeve is simple and compact and is easy to manufacture, and the concentricity of the sliding bar and the sliding sleeve is easy to guarantee. As a result, the valve clack can be lifted stably, the opening/ closing wear is small, and the service life is long; the speed of water injection into the sliding sleeve is controlled by the size of the water injecting hole on the side wall of the sliding bar to ensure that the valve is controlled to be opened and closed in a stepless mode, and the effect of eliminating water hammers is favorable. In addition, the utility model has the advantages of convenient installation or detachment and reliable work.
Description
Technical field
The utility model relates to a kind of valve of controlling FLUID TRANSPORTATION, especially refers to a kind of buffer valve that uses in the supply channel of high potential difference that is applicable to.
Background technique
Buffer valve is an indispensable equipment on various industry and the civil pipeline, be to be used for the one-way flow of controlling plumbing fixtures medium, to prevent the reverse refluence of medium, and the existing multiple pattern of existing buffer valve, as the utility model patent notification number of China is that " safety check " of CN2346997Y is exactly a kind of pattern wherein, it discloses a kind of by a main valve and the safety check that the control safety check is formed, flap is positioned at the valve seat outlet side, with the coaxial interlock of diaphragm that is fitted between valve seat and the valve gap, pressure in the formed film of diaphragm and the valve gap chamber is by the control of control safety check, realize that small-bore safety check controls bigbore fluid line, the keying flexibility and the functional reliability of conventional check valves have been improved, and close in the closed procedure at the valve non-return, the film cavity pressure slowly increases, effectively prevented the generation of water hammer, but its deficiency is the complex structure of safety check, install, unloading process is loaded down with trivial details, the cost height, and the diaphragm of main valve is in use damaged easily, thereby make valve function out of hand, only in pipeline, work, make life of product shorten, thereby influence its market competitive power by main valve.
Summary of the invention
Technical problem to be solved in the utility model is the defective that overcomes prior art, and a kind of buffer valve of simple in structure, long service life is provided.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: this lift type slow closure check valve comprises valve body, valve seat, be positioned at the flap of valve seat outlet side closes the valve gap that is connected with taking off with valve body, it is characterized in that described flap is fixed on the slide bar tail end face that is positioned at valve seat outlet side and hollow, the inserting of described slide bar head is at the sliding sleeve that is positioned at the valve gap inboard, described slide bar hollow side wall is provided with water injection hole, one end is positioned at the spring of slide bar hollow, and its other end and sliding sleeve offset.
Be provided with valve petal shelf between described slide bar afterbody and the flap.
Described valve petal shelf and slide bar are integral.
On the sidewall of the tail position that described water injection hole approaches.
Described sliding sleeve and valve gap are integral.
Compared with prior art, advantage of the present utility model is: because flap is fixed on the slide bar, and the slide bar inserting is in sliding sleeve, make slide bar in sliding sleeve, slide by spring between the two, and slide bar and sliding sleeve is simple in structure, compact, be easy to processing, the concentricity of the two is easy to guarantee, thereby make the lifting of flap steady, the opened/closed light abrasion, long service life, and controlled the speed of water filling in sliding sleeve by the water injection hole size of slide bar sidewall, make the keying speed of valve be subjected to stepless control, eliminate the better effects if of water hammer; In addition, its installation or removal are all very convenient, and can strengthen the quality of fit of the diameter of slide bar and itself and sliding sleeve as required, make the two coaxality better, and no matter horizontal or vertical during installation, under the situation of no hydraulic pressure, the assurance flap is normally closed, reliable operation.
Description of drawings
Fig. 1 is a structure cross-sectional schematic of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, lift type slow closure check valve in the present embodiment comprises valve body 1, valve seat 2, be positioned at the flap 3 and the valve gap 8 of valve seat 2 outlet sides, in the present embodiment, flap 3 adopts the brass flap behind the correct grinding, also can adopt the enhancing nitrile butadiene rubber, described flap 3 is fixed on the valve petal shelf 4 that is positioned at valve seat 2 outlet sides, and described valve petal shelf 4 links to each other with the afterbody of slide bar 6, the two is made of one, described slide bar 6 hollows, and its head inserting is in sliding sleeve 7, and sliding sleeve 7 is integral with valve gap 8, one end of one spring 9 is positioned at slide bar 6 and offsets with valve petal shelf 4, and the other end is positioned at sliding sleeve 7 and offsets with valve gap 8, makes flap 3 have the trend to valve seat 2 side shiftings; Be threaded by pad 10 between valve gap 8 and the valve body 1, also can adopt screw rod, nut fastening between the two, on the position of approaching valve petal shelf 4 places on described slide bar 6 hollow side wall, be provided with water injection hole 5.
When supplying water, the hydraulic pressure of water intake overcomes the active force of spring 9, makes flap 3 open valve seat 2, at this moment, because move in sliding sleeve 7 slide bar 6 pressure springs 9 backs, make the water that is positioned at it discharge by water injection hole 5, thereby the unlatching of flap 3 also is slow, stepless.When cutting off the water, water intake hydraulic pressure descends, under the restoring force effect of recirculation water in water outlet and spring 9, make flap 3 drive valve petal shelf 4, slide bar 6 to valve seat 2 side shiftings, recirculation water enters by water injection hole 5 in the hollow of slide bar 7 simultaneously, and therefore, the size of water injection hole 5 has been controlled the speed of water filling in sliding sleeve 7, make the keying speed of flap 2 be subjected to control, reached the purpose of Slow Close.
Claims (5)
1, a kind of lift type slow closure check valve, it comprises valve body (1), valve seat (2), be positioned at the flap (3) of valve seat (2) outlet side closes the valve gap (8) that is connected with taking off with valve body (1), it is characterized in that described flap (3) is fixed on slide bar (6) tail end face that is positioned at valve seat (2) outlet side and hollow, described slide bar (6) head inserting is being positioned at the inboard sliding sleeve (7) of valve gap (8), described slide bar (6) hollow side wall is provided with water injection hole (5), one end is positioned at the spring (9) of slide bar (6) hollow, and its other end and sliding sleeve (7) offset.
2, lift type slow closure check valve according to claim 1 is characterized in that being provided with valve petal shelf (4) between described slide bar (6) afterbody and the flap (3).
3, lift type slow closure check valve according to claim 2 is characterized in that described valve petal shelf (4) and slide bar (6) are integral.
4,, it is characterized in that described water injection hole (5) approaches on the sidewall of tail position of slide bar (6) according to claim 1 or 2 or 3 described lift type slow closure check valve.
5,, it is characterized in that described sliding sleeve (7) and valve gap (8) are integral according to the described lift type slow closure check valve of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286257 CN2584981Y (en) | 2002-11-22 | 2002-11-22 | Lifting slowly closed check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286257 CN2584981Y (en) | 2002-11-22 | 2002-11-22 | Lifting slowly closed check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584981Y true CN2584981Y (en) | 2003-11-05 |
Family
ID=33746999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02286257 Expired - Fee Related CN2584981Y (en) | 2002-11-22 | 2002-11-22 | Lifting slowly closed check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584981Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742390A (en) * | 2013-11-28 | 2014-04-23 | 成都欧浦特控制阀门有限公司 | Air pump provided with telescopic spring |
| CN104350316A (en) * | 2012-05-31 | 2015-02-11 | 石崎公司 | Check valve and hot water system |
| CN104976390A (en) * | 2014-04-10 | 2015-10-14 | 苏州科迪流体控制设备有限公司 | Novel lift check valve |
| CN105864470A (en) * | 2016-05-27 | 2016-08-17 | 中国科学院武汉岩土力学研究所 | Adjustable dry and wet separation check valve for hydraulic tunnel engineering |
-
2002
- 2002-11-22 CN CN 02286257 patent/CN2584981Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104350316A (en) * | 2012-05-31 | 2015-02-11 | 石崎公司 | Check valve and hot water system |
| CN104350316B (en) * | 2012-05-31 | 2017-07-07 | 石崎公司 | Check-valves and water-raising system |
| US9816622B2 (en) | 2012-05-31 | 2017-11-14 | Ishizaki Corporation | Check valve and pumping system |
| CN103742390A (en) * | 2013-11-28 | 2014-04-23 | 成都欧浦特控制阀门有限公司 | Air pump provided with telescopic spring |
| CN103742390B (en) * | 2013-11-28 | 2015-10-28 | 成都欧浦特控制阀门有限公司 | A kind of air pump being provided with coil tension spring |
| CN104976390A (en) * | 2014-04-10 | 2015-10-14 | 苏州科迪流体控制设备有限公司 | Novel lift check valve |
| CN105864470A (en) * | 2016-05-27 | 2016-08-17 | 中国科学院武汉岩土力学研究所 | Adjustable dry and wet separation check valve for hydraulic tunnel engineering |
| CN105864470B (en) * | 2016-05-27 | 2018-09-14 | 中国科学院武汉岩土力学研究所 | Adjustable hydraulic tunnel engineering separating dry space from moist space non-return valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |