CN102278506B - High-performance slow-shut check valve - Google Patents
High-performance slow-shut check valve Download PDFInfo
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- CN102278506B CN102278506B CN 201110162763 CN201110162763A CN102278506B CN 102278506 B CN102278506 B CN 102278506B CN 201110162763 CN201110162763 CN 201110162763 CN 201110162763 A CN201110162763 A CN 201110162763A CN 102278506 B CN102278506 B CN 102278506B
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- check valve
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Abstract
The invention relates to a high-performance slow-shut check valve which comprises a main valve and a slot-shut mechanism, wherein a swing check valve is adopted as the main valve which is mainly characterized in that one end of a main valve rotating shaft extends out of the valve body and is connected with the slow-shut mechanism; the slow-shut mechanism is of a piston structure and comprises a cylinder body, a cylinder cover, a piston rod, a piston convex disk and a piston concave disk, one end of the piston rod is fixedly connected with the rotating shaft, part of the other end of the piston rod, which is positioned in the cylinder body, is provided with a T-shaped thread, the piston convex disk and the piston concave disk are respectively provided with a positive T-shaped thread and a negative T-shaped thread and meshed with the piston rod, a convex block of the piston convex disk is movably matched with a concave hole of the piston convex disk, and a piston cavity between the piston convex disk and the piston concave disk, a piston cavity between the piston convex disk and the cylinder body, and a piston cavity between the piston convex disk and the cylinder cover are respectively communicated with three port channels of a regulating valve. The high-performance slow-shut check valve has the characteristics of low closing noise, stable slow-shut performance, convenience for installation, simple structure and the like, and is suitable for control valves of preventing mediums on outlet pipelines of various pump stations from flowing backwards.
Description
Technical field
The present invention relates to valve field, specifically about a kind of buffer valve.Prevent the control valve that medium flows backwards on the pump discharge pipelines such as the present invention is applicable to supply water, blowdown.
Background technique
Buffer valve is comprised of the gentle locking mechanism of main valve, main valve generally adopts Swing check valve, be installed on the main pipe, promoting flap by the forward medium opens, reverse media promotes flap and closes, in the flap closing process, the closing velocity of Slow Close mechanism controls flap prevents that the flap closing velocity is too fast and with valve seat bump occurs and damage sealing surface and produce water hammer.Be the hydraulic self-control bevel-seat type wee of ZL201010253388.8 such as the patent No., by valve body, valve gap and valve plate, the inclination valve seat that cooperates with valve plate is arranged in the valve body, the valve pocket below of valve seat front end is provided with a damping device, described damping device be one by cylinder body, cylinder cap, piston, the oil hydraulic cylinder that piston rod and Compress Spring form, Compress Spring is arranged on piston rear end, so that extending in the valve pocket of valve seat rear end without External Force Acting lower piston rod front end, when valve plate is closed when touching piston rod, Compress Spring reduces the closing velocity of valve plate, prevent valve plate and valve seat bump, play the Slow Close effect.Its shortcoming is that damping device adopts valve plate to touch the closing velocity that the piston rod Compress Spring stops valve plate, can produce larger collision sound when valve plate touches piston rod; The elastic force of spring is selected to have relatively high expectations, and in long-term opening-closing process, affect the Slow Close performance behind the spring fatigue; Damping device is installed in the valve body of main valve, and trouble, complex structure are installed.
Summary of the invention
The objective of the invention is the shortcoming that exists for prior art, provide a kind of and close that impact sound is low, Slow Close stable performance, high-performance delay-close check valve easy for installation, simple in structure.
Technological scheme of the present invention comprises the main valve locking mechanism that eases up, and main valve adopts Swing check valve, and described Swing check valve comprises valve body, valve seat, flap, running shaft, and flap is installed on the valve body by running shaft; Mainly be that an end of running shaft stretches out the valve body outside and is connected with Slow Close mechanism, described Slow Close mechanism is piston cylinder operator, formed by gray iron, piston rod, the protruding dish of piston, the recessed dish of piston, one end of piston rod is fixedly connected with running shaft, the part of the piston rod the other end in cylinder body is shaped with T-shaped screw thread, the protruding dish of piston and the recessed dish of piston are shaped with respectively the T-shaped screw thread of forward and inverted T-shaped screw thread and piston rod engagement, and the projection of the protruding dish of piston cooperates with the shrinkage pool of the recessed dish of piston is movable; The protruding dish of piston cavity, piston between the protruding dish of piston and the recessed dish of piston and the recessed dish of piston cavity, piston between the cylinder body and the piston cavity between the cylinder cap respectively with three mouth channel connections of modulating valve.
Advantage of the present invention is by the protruding dish of the piston that is shaped with the T-shaped screw thread of forward and is shaped with the recessed dish of the piston while of inverted T-shaped screw thread and the T-shaped thread engagement of piston rod; in the flap closing process; running shaft rotarily drives the protruding dish of piston together with piston rod and the recessed dish of piston is drawn close; hydraulic oil in the piston cavity between the protruding dish of extrusion piston and the recessed dish of piston reaches damping function; make flap slowly descending; avoid the collision with valve seat; effective protection sealing surface and suppress water hammer has that the noise of closing is low, a Slow Close stable performance, the characteristics such as easy for installation, simple in structure.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
High-performance delay-close check valve as shown in Figure 1 comprises the main valve B locking mechanism A that eases up, and main valve B adopts Swing check valve, and described Swing check valve comprises valve body, valve seat, flap, running shaft 1, and flap is installed on the valve body by running shaft 1.One end of running shaft 1 stretches out the valve body outside and is connected with the A of Slow Close mechanism, the described Slow Close A of mechanism is piston cylinder operator, formed by cylinder body 4, cylinder cap 5, piston rod, the protruding dish 2 of piston, the recessed dish 3 of piston, one end of piston rod is fixedly connected with running shaft 1, the part of the piston rod the other end in cylinder body 4 is shaped with T-shaped screw thread, the protruding dish 2 of piston and the recessed dish 3 of piston are shaped with respectively the T-shaped screw thread of forward and inverted T-shaped screw thread and piston rod engagement, and the projection of the protruding dish 2 of piston cooperates with the shrinkage pool of the recessed dish 3 of piston is movable.In main valve B closing process, the projection of the protruding dish 2 of piston moves in the shrinkage pool of the recessed dish 3 of piston; In the main valve B opening process, the projection of the protruding dish 2 of piston shifts out in the shrinkage pool of the recessed dish 3 of piston.The protruding dish 2 of piston cavity, piston between the protruding dish 2 of piston and the recessed dish 3 of piston and the recessed dish 3 of piston cavity, piston between the cylinder body 4 are communicated with three passwaies of modulating valve 6 respectively with piston cavity between the cylinder cap 5, by adjusting modulating valve 6, the flow of regulator solution force feed circulation, reach the size of damping adjusting power, the closing velocity of control flap.Running shaft 1 can directly extend to cylinder body 4 interior piston rods as the A of Slow Close mechanism, at this moment, the part of running shaft 1 in cylinder body 4 is made the inverted T-shaped thread engagement of the T-shaped screw thread of forward and the recessed dish 3 of piston of T-shaped screw thread and the protruding dish 2 of piston.No matter be that running shaft 1 directly extends to cylinder body 4 interior piston rods as the A of Slow Close mechanism, or running shaft 1 rotate the Slow Close A of mechanism work by being fixedly connected with piston rod, all has same transmission effect.
Claims (2)
1. high-performance delay-close check valve, comprise main valve (B) locking mechanism (A) that eases up, main valve (B) adopts Swing check valve, and described Swing check valve comprises valve body, valve seat, flap, running shaft (1), and flap is installed on the valve body by running shaft (1); An end that it is characterized in that running shaft (1) stretches out the valve body outside and is connected with Slow Close mechanism (A), described Slow Close mechanism (A) is piston cylinder operator, by cylinder body (4), cylinder cap (5), piston rod, the protruding dish of piston (2), the recessed dish of piston (3) forms, one end of piston rod is fixedly connected with running shaft (1), the part of the piston rod the other end in cylinder body (4) is shaped with T-shaped screw thread, the protruding dish of piston (2) and the recessed dish of piston (3) are shaped with respectively the T-shaped screw thread of forward and inverted T-shaped screw thread and piston rod engagement, and the projection of the protruding dish of piston (2) cooperates with the shrinkage pool of the recessed dish of piston (3) is movable; The recessed dish of piston cavity, piston (3) between the protruding dish of piston cavity, piston (2) between the protruding dish of piston (2) and the recessed dish of piston (3) and the cylinder body (4) is communicated with three passwaies of modulating valve (6) respectively with the piston cavity between the cylinder cap (5).
2. high-performance delay-close check valve according to claim 1 is characterized in that piston rod directly extends to cylinder body (4) by running shaft (1) and consists of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162763 CN102278506B (en) | 2011-06-16 | 2011-06-16 | High-performance slow-shut check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162763 CN102278506B (en) | 2011-06-16 | 2011-06-16 | High-performance slow-shut check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102278506A CN102278506A (en) | 2011-12-14 |
| CN102278506B true CN102278506B (en) | 2013-01-23 |
Family
ID=45104129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110162763 Active CN102278506B (en) | 2011-06-16 | 2011-06-16 | High-performance slow-shut check valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN102278506B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315203B (en) * | 2014-08-15 | 2016-08-17 | 伯特利阀门集团有限公司 | A kind of slow closing device of swing check valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222268Y (en) * | 1994-12-06 | 1996-03-13 | 张俊中 | Ball valve |
| JP3292790B2 (en) * | 1995-04-26 | 2002-06-17 | 株式会社ニフコ | Variable speed rotary damper |
| CN202100821U (en) * | 2011-06-16 | 2012-01-04 | 伯特利阀门集团有限公司 | High-performance delay-close check valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3294672B2 (en) * | 1993-06-07 | 2002-06-24 | 株式会社ショーワ | Height adjustment device |
-
2011
- 2011-06-16 CN CN 201110162763 patent/CN102278506B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222268Y (en) * | 1994-12-06 | 1996-03-13 | 张俊中 | Ball valve |
| JP3292790B2 (en) * | 1995-04-26 | 2002-06-17 | 株式会社ニフコ | Variable speed rotary damper |
| CN202100821U (en) * | 2011-06-16 | 2012-01-04 | 伯特利阀门集团有限公司 | High-performance delay-close check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102278506A (en) | 2011-12-14 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Shengfeng Inventor after: Qin Yongya Inventor after: Shang Yulai Inventor after: Yu Guiwu Inventor before: Qin Yongya Inventor before: Shang Yulai Inventor before: Yu Guiwu |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180228 Address after: 325102 Sanjiang Industrial Park, Yongjia County, Wenzhou, Zhejiang Patentee after: Zhejiang Bethel science and Technology Co., Ltd. Address before: 325102 Zhejiang province Yongjia County Oubei Town East Industrial Zone Patentee before: Boteli Valve Group Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325102 Sanjiang Industrial Park Yongjia County Wenzhou city Zhejiang Province Patentee after: Zhejiang bertley Technology Co.,Ltd. Address before: 325102 Sanjiang Industrial Park Yongjia County Wenzhou city Zhejiang Province Patentee before: ZHEJIANG BOTELI VALVE Group |