CN2423461Y - Piston-type buffer close check valve - Google Patents
Piston-type buffer close check valve Download PDFInfo
- Publication number
- CN2423461Y CN2423461Y CN 00217628 CN00217628U CN2423461Y CN 2423461 Y CN2423461 Y CN 2423461Y CN 00217628 CN00217628 CN 00217628 CN 00217628 U CN00217628 U CN 00217628U CN 2423461 Y CN2423461 Y CN 2423461Y
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- China
- Prior art keywords
- valve
- piston
- utility
- model
- type buffer
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- 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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Abstract
The utility model discloses a piston type slow-closing non-return valve. The utility model is composed of a main valve, a control non-return valve and a connection pipe, wherein, a valve clack of the main valve is positioned on the outlet side of a valve seat and is linked with a control mechanism through a valve rod. The utility model is characterized in that the control mechanism is composed of a piston cylinder and a piston; the interior of the valve body on the inlet side of the valve seat of the main valve is provided with a filter net. The utility model has the advantages of flexible opening and closing, stable and reliable operation, long service life, etc. The utility model is suitable for being arranged on water supply pipelines to control the one-way circulation of the medium.
Description
The utility model relates to a kind of valve, specifically about a kind of safety check.
Safety check is an indispensable equipment on various industry and the civil pipeline, is used for the one-way flow of controlling plumbing fixtures medium, prevents that medium from oppositely flowing backwards.The main pattern of conventional check valves has rise-fall type and rotary-open type, and these two kinds of safety check are because of low cost of manufacture, and obtains wide popularization and application.But its deficiency is to need bigger reverse pressure when closing, and service time, flap and rotating shaft meeting incrustation thereof got rusty when longer, make flap open and close dumb, can not return or be not closed completely, do not have the non-return seal action, it is unreliable to work; The water hammer that valve produces when closing has bigger impact force to flap, influences the working life of product.
China's utility model patent, notification number is the safety check of CN2346997Y, disclose a kind of by a main valve and the safety check that the control safety check is formed, the flap of main valve 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 intelligence and the functional reliability of conventional check valves have been improved, and close in the closed procedure at the valve non-return, the pressure in film chamber slowly increases, and has effectively prevented the generation of water hammer.But its deficiency is that the diaphragm of main valve is in use damaged easily, thereby makes valve function out of hand, is only worked in pipeline by main valve, and life of product is short.In addition, in order to prevent of the influence of medium impurity, fixed filter outside the suction side of main valve needs to sealability.
One of the purpose of this utility model is at the deficiencies in the prior art, provides a kind of and opens and closes flexibly, the piston type buffer valve of reliable operation, long service life;
Two of the purpose of this utility model is at the deficiencies in the prior art, and a kind of piston type buffer valve of effectively filter medium impurity is provided.
The technological scheme that realizes the utility model purpose mainly comprises main valve, control safety check and connecting tube, and the flap of main valve is positioned at the valve seat outlet side, and by valve rod and control mechanism interlock.Its control mechanism is made of piston cylinder and piston, in the valve body of main valve valve seat suction side filter screen is housed.
The utility model beneficial effect compared with prior art is that the piston linking mechanism that the control mechanism of main valve is made up of piston and piston cylinder constitutes, its long service life, flexible, the reliable operation of switching motion, and the filter screen that is provided with in valve body filter medium impurity effectively, do not need other fixed filter before valve, simplify user installation, reduce the project installation cost.
Fig. 1 is the structural representation of the utility model piston type buffer valve.
The technical solution of the utility model now is described in further detail in conjunction with the accompanying drawings and embodiments.
Piston type buffer valve as shown in Figure 1 mainly is made of main valve, control safety check 12 and connecting tube.Main valve comprises valve body 1, valve seat 3, flap 4, valve rod 5, valve gap 10, spring 6, control mechanism and assembling set and Sealing.Control mechanism constitutes by being contained in the piston cylinder 9 between valve gap 10 and the valve body 1 and being positioned at the piston 8 of piston cylinder 9 internal fixation in valve rod 5 upper ends.Flap 4 is positioned at the outlet side of valve seat 3, constitutes linking mechanisms with valve rod 5, piston 8, in valve rod 5 peripheries of flap 4 upsides and piston cylinder 9 downsides spring 6 is housed.The suction side passage of valve body 1 and outlet side passage are communicated with by the inner chamber of connecting tube with piston cylinder 9 respectively.
On the connecting tube between valve body 1 suction side passage and the piston cylinder 9, the control non-return is housed
Control safety check 12, ball valve 13 and filter 14 are housed on the connecting tube between valve body 1 suction side passage and the piston cylinder 9, and the outlet side of control safety check 12 is installed towards piston cylinder 9.Filter 14 is installed near valve body 1.
On the connecting tube between valve body 1 outlet side passage and the piston cylinder 9, ball valve 7 and needle value 11 are housed, main valve are formed slowly close.
In the valve body 1 of the suction side of main valve valve seat 3 filter screen 2 is housed.
Claims (2)
1, a kind of piston type buffer valve, comprise main valve, control safety check (12) and connecting tube, the flap of main valve (4) is positioned at valve seat (3) outlet side, and by valve rod (5) and control mechanism interlock, it is characterized in that: described control mechanism is made of piston cylinder (9) and piston (8); In the valve body (1) of valve seat (3) suction side filter screen (2) is housed.
2,, it is characterized in that on the connecting tube between valve body (1) suction side passage and the piston cylinder (9) filter (14) being housed according to the described piston type buffer valve of claim (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217628 CN2423461Y (en) | 2000-05-17 | 2000-05-17 | Piston-type buffer close check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217628 CN2423461Y (en) | 2000-05-17 | 2000-05-17 | Piston-type buffer close check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2423461Y true CN2423461Y (en) | 2001-03-14 |
Family
ID=33583156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00217628 Expired - Fee Related CN2423461Y (en) | 2000-05-17 | 2000-05-17 | Piston-type buffer close check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2423461Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463916B (en) * | 2007-12-18 | 2010-09-15 | 桑红旗 | Anti-backflow valve and self-rotation preventing water meter with the same |
| CN105587922A (en) * | 2015-12-09 | 2016-05-18 | 安徽铜都流体科技股份有限公司 | Energy-saving pump control valve |
| CN107504232A (en) * | 2017-09-21 | 2017-12-22 | 安徽荣达阀门有限公司 | A kind of novel slow-closing check-valves |
| WO2018058364A1 (en) * | 2016-09-28 | 2018-04-05 | 太原理工大学 | Contamination-preventing micro-resistance slow-closing check valve and industrial drainage system |
-
2000
- 2000-05-17 CN CN 00217628 patent/CN2423461Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463916B (en) * | 2007-12-18 | 2010-09-15 | 桑红旗 | Anti-backflow valve and self-rotation preventing water meter with the same |
| CN105587922A (en) * | 2015-12-09 | 2016-05-18 | 安徽铜都流体科技股份有限公司 | Energy-saving pump control valve |
| CN105587922B (en) * | 2015-12-09 | 2018-05-15 | 安徽铜都流体科技股份有限公司 | Energy-saving pump-controlling valve |
| WO2018058364A1 (en) * | 2016-09-28 | 2018-04-05 | 太原理工大学 | Contamination-preventing micro-resistance slow-closing check valve and industrial drainage system |
| AU2016424703B2 (en) * | 2016-09-28 | 2020-09-17 | Taiyuan University Of Technology | Contamination-preventing micro-resistance slow-closing check valve and industrial drainage system |
| CN107504232A (en) * | 2017-09-21 | 2017-12-22 | 安徽荣达阀门有限公司 | A kind of novel slow-closing check-valves |
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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 |