CN205315784U - Waterproof hammer butterfly check valve of mechanical type - Google Patents
Waterproof hammer butterfly check valve of mechanical type Download PDFInfo
- Publication number
- CN205315784U CN205315784U CN201620040045.6U CN201620040045U CN205315784U CN 205315784 U CN205315784 U CN 205315784U CN 201620040045 U CN201620040045 U CN 201620040045U CN 205315784 U CN205315784 U CN 205315784U
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- spring
- rod
- slowly
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Mechanically-Actuated Valves (AREA)
- Check Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a waterproof hammer butterfly check valve of mechanical type, it includes valve body, butterfly plate, valve rod, cylinder body, piston and piston rod, separate into two upper and lower cavities by piston (3) in cylinder body (2), upward place quick closing valve spring (1) in the cavity, place in the lower cavity and slowly close spring (4), valve rod (8) are connected with butterfly plate (9) through trundle (11), and the valve rod one end end fixing that stretches out outside valve body (10) has shift fork (7), and the other end and the round pin of fixing at piston rod (5) tip (6) of dialling of shift fork are connected. During the termination of pumping, the quick closedown is realized to the valve under the dead weight of the elasticity of quick closing valve spring release, butterfly plate and water conservancy effect, when the spring is slowly closed to piston contact and compression to the valve quick closedown, slowly closes the function that the spring produced the counter -force that obstructs the valve and close, messenger's valve realization slowly closing to water hammer phenomenon's emergence has been avoided.
Description
Technical field
This utility model relates to valve technology field, especially a kind of mechanical type water hammer-resistant butterfly swing check valve.
Background technology
After water-feeding & drainaging pipeline systems pumps quits work, damage motor for avoiding fluid media (medium) to flow backwards, at pump discharge equipped with check-valves. For medium-large caliber pipe-line system pump quit work velocity of medium be kept to zero time, check-valves does not also completely close, medium flows backwards and valve plate will be promoted quickly to move to valve seat, and after valve plate contacts with valve seat, media flow inertia makes overpressure sharply increase, thus producing water hammer. For avoiding water hammer to occur, the device with cushioning effect need to be installed on pipeline to realize the Slow Close of check-valves. The buffer unit that current check-valves adopts has the outer hydraulic shock absorber of valve body (as disclosed in ZL98202046 a kind of micro-resistance slowly-closed butterfly swing check valve) and utilizes the buffer unit (as disclosed in CN2519078Y a kind of Self-controlled slow-closing butterfly swing check valve) of fluid media (medium), but the hydraulic damping device of both check-valves all exists processing request height, the easy leakage defect of hydraulic medium.
Utility model content
The purpose of this utility model is in that to overcome the deficiency of above-mentioned prior art, it is provided that a kind of simple in construction, reliable in action mechanical type water hammer-resistant butterfly swing check valve.
Its technical scheme is: a kind of mechanical type water hammer-resistant butterfly swing check valve, including valve body, butterfly plate, valve rod, cylinder body, piston and piston rod, it is characterized in that: in described cylinder body, be separated into upper and lower two chambers by piston, upper chamber places quick closing valve spring, lower chambers is placed Slow Close spring; Described valve rod is connected with butterfly plate by trundle, and the end, valve rod one end stretched out outside valve body is fixed with shift fork, and the other end of shift fork is connected with the finger being fixed on piston rod end.
It provides the benefit that: when butterfly swing check valve is opened under hydraulic action, butterfly plate is rotated by trundle band ovable valve stem, rotate with the shift fork being fixed on valve stem end, the shift fork rotated drives piston rod and piston upwards rectilinear motion by finger and compresses quick closing valve spring, is separated with a distance δ between making between piston and Slow Close spring upper end face;During termination of pumping, quick closedown is realized at the elastic force of quick closing valve spring release, the deadweight of butterfly plate and hydraulic action lower valve, when valve rapid-closing to piston contact and when compressing Slow Close spring, Slow Close spring produces to hinder the counter-force of valve closing, valve is made to realize the function of slowly closing, thus avoiding the generation of water hammer. Compared with existing check-valves, its simple in construction, reliable in action, both reduce manufacture difficulty, it also avoid the leakage problem that hydraulic damping device exists simultaneously.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation;
Fig. 2 is structural representation during this utility model standard-sized sheet.
Detailed description of the invention
As it is shown in figure 1, a kind of mechanical type water hammer-resistant butterfly swing check valve, including valve body, butterfly plate, valve rod, cylinder body, piston and piston rod. It is separated into upper and lower two chambers by piston 3 in described cylinder body 2, upper chamber places quick closing valve spring 1, lower chambers is placed Slow Close spring 4; Described valve rod 8 is connected with butterfly plate 9 by trundle 11, and the end, valve rod one end stretched out outside valve body 10 is fixed with shift fork 7, and the other end of shift fork is connected with the finger 6 being fixed on piston rod 5 end.
When butterfly swing check valve is opened under hydraulic action, butterfly plate 9 is rotated with ovable valve stem 8 and the shift fork 7 being fixed on valve stem end by trundle 11, the shift fork rotated drives piston rod and piston 3 upwards rectilinear motion further through the finger 6 being fixed on piston rod 5 and compresses quick closing valve spring 1, is separated with a distance δ (see Fig. 2) between making between piston and Slow Close spring 4 upper surface. During termination of pumping, quick closedown is realized at the elastic force of quick closing valve spring release, the deadweight of butterfly plate and hydraulic action lower valve, when valve rapid-closing to piston contact and when compressing Slow Close spring, Slow Close spring produces to hinder the counter-force of valve closing, valve is made to realize the function of slowly closing, thus avoiding the generation of water hammer.
Claims (1)
1. a mechanical type water hammer-resistant butterfly swing check valve, including valve body, butterfly plate, valve rod, cylinder body, piston and piston rod, it is characterized in that: in described cylinder body (2), be separated into upper and lower two chambers by piston (3), upper chamber places quick closing valve spring (1), lower chambers is placed Slow Close spring (4); Described valve rod (8) is connected with butterfly plate (9) by trundle (11), stretching out and be fixed with shift fork (7) in the outer end, valve rod one end of valve body (10), the other end of shift fork is connected with the finger (6) being fixed on piston rod (5) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620040045.6U CN205315784U (en) | 2016-01-15 | 2016-01-15 | Waterproof hammer butterfly check valve of mechanical type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620040045.6U CN205315784U (en) | 2016-01-15 | 2016-01-15 | Waterproof hammer butterfly check valve of mechanical type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205315784U true CN205315784U (en) | 2016-06-15 |
Family
ID=56204707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620040045.6U Expired - Fee Related CN205315784U (en) | 2016-01-15 | 2016-01-15 | Waterproof hammer butterfly check valve of mechanical type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205315784U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286908A (en) * | 2016-08-24 | 2017-01-04 | 英诺威阀业有限公司 | A kind of quiet Slow Close Valve of high-performance |
| CN113090768A (en) * | 2021-04-28 | 2021-07-09 | 博纳斯威阀门股份有限公司 | Pipe explosion shutoff valve |
| CN113154096A (en) * | 2021-05-19 | 2021-07-23 | 博纳斯威阀门股份有限公司 | Method and closing device for closing check valve at zero flow rate |
| CN114294430A (en) * | 2021-11-26 | 2022-04-08 | 国家能源集团科学技术研究院有限公司 | Quick-closing valve |
-
2016
- 2016-01-15 CN CN201620040045.6U patent/CN205315784U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286908A (en) * | 2016-08-24 | 2017-01-04 | 英诺威阀业有限公司 | A kind of quiet Slow Close Valve of high-performance |
| CN113090768A (en) * | 2021-04-28 | 2021-07-09 | 博纳斯威阀门股份有限公司 | Pipe explosion shutoff valve |
| CN113090768B (en) * | 2021-04-28 | 2022-06-17 | 博纳斯威阀门股份有限公司 | Pipe explosion shutoff valve |
| CN113154096A (en) * | 2021-05-19 | 2021-07-23 | 博纳斯威阀门股份有限公司 | Method and closing device for closing check valve at zero flow rate |
| CN114294430A (en) * | 2021-11-26 | 2022-04-08 | 国家能源集团科学技术研究院有限公司 | Quick-closing valve |
| CN114294430B (en) * | 2021-11-26 | 2024-06-07 | 国家能源集团科学技术研究院有限公司 | Quick closing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20170115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |