CN203948774U - The cavitation-preventive structure of piston type water valve - Google Patents
The cavitation-preventive structure of piston type water valve Download PDFInfo
- Publication number
- CN203948774U CN203948774U CN201420361329.6U CN201420361329U CN203948774U CN 203948774 U CN203948774 U CN 203948774U CN 201420361329 U CN201420361329 U CN 201420361329U CN 203948774 U CN203948774 U CN 203948774U
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- China
- Prior art keywords
- cavitation
- piston
- passage hole
- water passage
- valve
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- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000010030 laminating Methods 0.000 claims abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The cavitation-preventive structure of piston type water valve, comprise valve body, valve seat, piston, on valve seat, be provided with a water passage hole, piston can axially moving along water passage hole between the open position of a closed position and that is plugged in water passage hole upper end portion opening away from water passage hole, on piston, be fixedly connected with a cavitation-preventive cover, the cross-under of this cavitation-preventive cover activity is in water passage hole and the axial motion of water passage hole of can postponing under the drive of piston, cavitation-preventive cover comprises the roof being fixedly connected with the end face of piston, and by the edge of roof to downward-extension and sidewall in the form of a ring, the outer surface of sidewall and the laminating of the inwall of water passage hole, and on sidewall, be provided with the slotted hole of multiple inclinations.The utility model can effectively reduce, even prevent the generation of cavitation phenomenon, under small flow working state, also only can produce cavitation phenomenon in a small amount in cavitation-preventive cover inside, thus the operating life that has extended piston type water valve, and effectively reduced noise and vibrations.
Description
Technical field
The utility model relates to valve technology field, is specifically related to a kind of cavitation-preventive structure of piston type water valve.
Background technique
At present; piston type water valve generally includes piston and valve body; on valve body, arrange and supply piston activity cross-under at inner valve opening, the edge that valve body is positioned at valve opening forms flap, and it is in the time of work; conventionally can produce cavitation phenomenon; when state at piston type water valve in small flow work, cavitation phenomenon is particularly serious, and the bubble producing in cavitation phenomenon breaks and can discharge larger energy; thereby make valve produce larger noise, vibrations, more seriously can damage the inner body of piston type water valve.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of cavitation-preventive structure of piston type water valve, and it can effectively prevent the impact of cavitation phenomenon on piston type water valve, reduces noise and vibrations.
For achieving the above object, the utility model adopts following technological scheme:
The cavitation-preventive structure of piston type water valve, comprise valve body, be fixedly mounted on the valve seat on valve body, and movable be arranged on the piston on valve body, on valve seat, be provided with a water passage hole, piston can axially moving along water passage hole between the open position of a closed position and that is plugged in water passage hole upper end portion opening away from water passage hole, on piston, be fixedly connected with a cavitation-preventive cover, the cross-under of this cavitation-preventive cover activity is in water passage hole and the axial motion of water passage hole of can postponing under the drive of piston, cavitation-preventive cover comprises the roof being fixedly connected with the end face of piston, and by the edge of roof to downward-extension and sidewall in the form of a ring, the outer surface of sidewall and the laminating of the inwall of water passage hole, and on sidewall, be provided with the slotted hole of multiple inclinations.
The plurality of slotted hole is around the central axis circumference array of cavitation-preventive cover.
The angle of the length direction of slotted hole and the bearing of trend of sidewall is 10-20 degree.
The beneficial effects of the utility model are:
Than prior art, the utility model is due to cavitation-preventive cover being installed on piston, can effectively reduce, even prevent the generation of cavitation phenomenon, under small flow working state, also only can be in the inner cavitation phenomenon in a small amount that produces of cavitation-preventive cover, thereby extend the operating life of piston type water valve, and effectively reduced noise and vibrations.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of cavitation-preventive cover in Fig. 1;
Wherein: 10, piston; 20, valve body; 30, valve seat; 40, cavitation-preventive cover; 41, roof; 42, sidewall; 43, slotted hole.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
As Fig. 1, shown in 2, the cavitation-preventive structure of piston type water valve of the present utility model comprises, valve body 20, valve seat 30, piston 10 and cavitation-preventive cover 40, wherein, valve seat 30 is fixedly mounted on valve body 20, on this valve seat 30, be provided with the water passage hole that a water supply stream passes through, being arranged on valve body 20 of piston 10 activities, this piston 10 can be along the axial motion of water passage hole under the drive of external force, this piston 10 can move between the open position of a closed position and that is plugged in water passage hole upper end portion opening away from water passage hole, , piston 10 moves downward to being above-mentioned closed position with the position of valve seat 30 upper-end surface laminatings, piston 10 moves up to the position separating with valve seat 30 upper-end surfaces and is above-mentioned open position.Cavitation-preventive cover 40 is fixedly connected on the lower end surface of piston 10, and the cross-under of these cavitation-preventive cover 40 activities is in water passage hole and the axial motion of water passage hole of can postponing under the drive of piston 10, cavitation-preventive cover 40 comprises the roof 41 being fixedly connected with by screw with the lower end surface of piston 10, and by the edge of roof to downward-extension and sidewall in the form of a ring 42, the outer surface of sidewall 42 and the laminating of the inwall of water passage hole, and on sidewall 42, be provided with the slotted hole 43 of multiple inclinations, the plurality of slotted hole 43 is around central axis (being the central axis of the water passage hole) circumference array of cavitation-preventive cover 40.
In use, current enter via the import of valve, and enter the also central shaft of directive cavitation-preventive cover 40 from the slotted hole 43 of cavitation-preventive cover 40 peripheries, the jet of water and bubble only, at the inner shock mutually of cavitation-preventive cover 40, forms turbulent flow, has increased the flow resistance of water, the pressure that has reduced water recovers, slow down the gradient that water pressure changes, impelled water flow velocity more steady, thereby effectively reduce, even prevent the generation of cavitation phenomenon.When the inlet pressure of piston type water valve constant; slotted hole 43 supplies water the area that flows through while diminishing; piston type water valve is in the time of small flow working state; even generation cavitation phenomenon, it is only also to occur in cavitation-preventive cover 40 inside, thereby has protected valve seat 30; extend the operating life of piston type water valve; and the slotted hole that current are gone up from different directions enters and clashes into, that is to say that the slotted hole 43 of inclination makes current at the inner turbulent flow that forms of cavitation-preventive cover 40, effectively reduce noise and vibrations.
Through checking, the angle of the length direction of above-mentioned slotted hole 43 and the bearing of trend of sidewall 42 is 10-20 degree, and especially 15 when spend, its noise reduction and damping effect the best.
The utility model is due to cavitation-preventive cover 40 being installed on piston 10, can effectively reduce, even prevent the generation of cavitation phenomenon, under small flow working state, also only can be in the inner cavitation phenomenon in a small amount that produces of cavitation-preventive cover 40, thereby extend the operating life of piston type water valve, and effectively reduced noise and vibrations.
To one skilled in the art, can be according to technological scheme described above and design, make other various corresponding changes and deformation, and within these all changes and deformation all should belong to the protection domain of the utility model claim.
Claims (3)
1. the cavitation-preventive structure of piston type water valve, comprise valve body, be fixedly mounted on the valve seat on valve body, and movable be arranged on the piston on valve body, on valve seat, be provided with a water passage hole, piston can axially moving along water passage hole between the open position of a closed position and that is plugged in water passage hole upper end portion opening away from water passage hole, it is characterized in that, on piston, be fixedly connected with a cavitation-preventive cover, the cross-under of this cavitation-preventive cover activity is in water passage hole and the axial motion of water passage hole of can postponing under the drive of piston, cavitation-preventive cover comprises the roof being fixedly connected with the end face of piston, and by the edge of roof to downward-extension and sidewall in the form of a ring, the outer surface of sidewall and the laminating of the inwall of water passage hole, and on sidewall, be provided with the slotted hole of multiple inclinations.
2. the cavitation-preventive structure of piston type water valve as claimed in claim 1, is characterized in that, the plurality of slotted hole is around the central axis circumference array of cavitation-preventive cover.
3. the cavitation-preventive structure of piston type water valve as claimed in claim 2, is characterized in that, the angle of the length direction of slotted hole and the bearing of trend of sidewall is 10-20 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361329.6U CN203948774U (en) | 2014-06-30 | 2014-06-30 | The cavitation-preventive structure of piston type water valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361329.6U CN203948774U (en) | 2014-06-30 | 2014-06-30 | The cavitation-preventive structure of piston type water valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948774U true CN203948774U (en) | 2014-11-19 |
Family
ID=51890810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420361329.6U Expired - Fee Related CN203948774U (en) | 2014-06-30 | 2014-06-30 | The cavitation-preventive structure of piston type water valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948774U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061777A (en) * | 2016-02-10 | 2017-08-18 | Vag阀门有限公司 | Regulation or blocking device |
| CN107387825A (en) * | 2017-07-31 | 2017-11-24 | 陈炯亮 | A kind of pressure-reducing valve |
| CN110025914A (en) * | 2018-01-12 | 2019-07-19 | 开利公司 | End cap type reagent nozzle |
-
2014
- 2014-06-30 CN CN201420361329.6U patent/CN203948774U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061777A (en) * | 2016-02-10 | 2017-08-18 | Vag阀门有限公司 | Regulation or blocking device |
| CN107061777B (en) * | 2016-02-10 | 2020-08-04 | Vag阀门有限公司 | Adjusting or locking device |
| CN107387825A (en) * | 2017-07-31 | 2017-11-24 | 陈炯亮 | A kind of pressure-reducing valve |
| CN107387825B (en) * | 2017-07-31 | 2024-04-05 | 陈炯亮 | Pressure reducing valve |
| CN110025914A (en) * | 2018-01-12 | 2019-07-19 | 开利公司 | End cap type reagent nozzle |
| US11305142B2 (en) | 2018-01-12 | 2022-04-19 | Carrier Corporation | End cap agent nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Biao Inventor after: Wu Baimin Inventor after: Chen Jianming Inventor after: Pan Qingxiang Inventor after: Hu Zhiming Inventor before: Li Biao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI BIAO TO: LI BIAO WU BAIMIN CHEN JIANMING PAN QINGXIANG HU ZHIMING |
|
| ASS | Succession or assignment of patent right |
Owner name: BEIJING YONGQUAN TENGDA VALVE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GUANGDONG YONGQUAN VALVE TECHNOLOGY CO., LTD. Effective date: 20150526 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528200 FOSHAN, GUANGDONG PROVINCE TO: 100055 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150526 Address after: 100055 Beijing city Xicheng District Guang'an South Binhe Road No. 31 (Hua Heng Building Room 701) Patentee after: Beijing Yongquan Tengda Valve Technology Co., Ltd. Address before: 528200 Guangdong Province Nanhai District of Foshan City, Jiujiang Longgao Road No. 1 East Mei Patentee before: Guangdong Yongquan Valve Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20200610 Address after: 528200 Guangdong Province Nanhai District of Foshan City, Jiujiang Longgao Road No. 1 East Mei Patentee after: GUANGDONG YONGQUAN VALVE TECHNOLOGY Co.,Ltd. Address before: 100055 Beijing city Xicheng District Guang'an South Binhe Road No. 31 (Hua Heng Building Room 701) Patentee before: BEIJING YONGQUAN TENGDA VALVE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20200630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |