CN202733070U - Check valve capable of reducing water hammer pressure - Google Patents
Check valve capable of reducing water hammer pressure Download PDFInfo
- Publication number
- CN202733070U CN202733070U CN201220449157.9U CN201220449157U CN202733070U CN 202733070 U CN202733070 U CN 202733070U CN 201220449157 U CN201220449157 U CN 201220449157U CN 202733070 U CN202733070 U CN 202733070U
- Authority
- CN
- China
- Prior art keywords
- main valve
- valve body
- piston
- decompression valves
- valve clack
- 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 - Lifetime
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- Details Of Valves (AREA)
Abstract
The utility model discloses a check valve capable of reducing water hammer pressure. The check valve comprises a main valve body and a main valve clack. A water inlet and a water outlet are arranged on the main valve body, the main valve clack is hinged to and fixedly installed in a cavity between the water inlet and the water outlet of the main valve body, a stopping plate is arranged on the end face of the main valve clack facing to the water inlet of the main valve body, a pressure release valve is fixedly installed on the end face of the main valve clack facing to the water outlet of the main valve body, and the pressure release valve comprises a pressure release valve body, a pressure release valve clack, a valve clack ejection rod, a reset spring, a piston cylinder, a piston rod and a piston. The pressure release valve is arranged on the main valve clack, the pressure release valve is closed slowly, the pressure release valve is still in an opening state at the moment the main valve clack is closed rapidly, water hammer pressure generated when the main valve clack is closed rapidly can be released effectively through the pressure release valve, and water hammer pressure when the check valve is closed can be reduced effectively.
Description
Technical field
The utility model relates to a kind of safety check, is specifically related to a kind of safety check that can reduce water hammer pressure.
Background technique
Safety check mainly is installed in the pipe-line system, is used for preventing the refluence of pipeline medium.(flow to water outlet from the water intake of main valve body) when ducted medium forward flow, the flap of safety check is opened under the effect of medium power automatically; And when ducted medium reverse flow, (flow to water intake from the water outlet of main valve body); the flap of safety check is autoshutdown under the effect of medium power; but in the moment that the safety check flap is closed; larger-size pipeline particularly; usually can produce very large water hammer pressure; water hammer pressure even can reach the several times of the normal pressure medium of pipeline, and too high water hammer pressure can cause damage to valve and whole pipe-line system.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of safety check that can reduce the water hammer pressure that main valve clack moment produces when closing.
For achieving the above object, the utility model provides a kind of safety check that can reduce water hammer pressure, comprise main valve body, main valve clack, main valve body is provided with water intake and water outlet, in the hinged inner chamber that is installed between main valve body water intake and the water outlet of described main valve clack, described main valve clack is provided with baffle plate towards the end face of main valve body water intake, described main valve clack is fixed with Decompression valves on the end face of main valve body water outlet, described Decompression valves comprises the Decompression valves valve body, the Decompression valves flap, the flap push rod, Returnning spring, piston cylinder, piston rod, piston, the Decompression valves valve body is installed in main valve clack on the end face of main valve body water outlet, the Decompression valves flap is installed in the inner chamber of Decompression valves valve body, described flap push rod is arranged in the main valve clack, one end of flap push rod and Decompression valves flap one end end face are affixed, the hinged main valve clack that is fixed in of one end of described baffle plate is on the end face of main valve body water intake, join on the other end top of the other end of baffle plate and flap push rod, the cross section of the described piston cylinder structure that takes the shape of the letter U, and the opening end of U-shaped piston cylinder is towards the water outlet of main valve body, install Returnning spring between the other end end face of the bottom surface of U-shaped piston cylinder and Decompression valves flap, piston rod is arranged in the piston cylinder, and piston rod is positioned on this end end of piston cylinder and is equiped with piston, it is affixed that piston rod is positioned at the piston cylinder outer the other end and Decompression valves flap, also is provided with the piston aperture of axial perforation side face of piston ring on the described piston.
Principle of the present utility model is: (flow to water outlet from the water intake of main valve body) when ducted medium forward flow, main valve clack is opened under the effect of medium power automatically, baffle plate also is affixed to main valve clack under the effect of medium power simultaneously, and by flap push rod jack-up Decompression valves flap, open Decompression valves, thereby make Decompression valves under the main valve clack open mode, be in all the time the enable possition; When ducted medium reverse flow, (flow to water intake from the water outlet of main valve body), main valve clack quick closedown under the effect of medium power, after main valve clack is closed, baffle plate has not had the effect of medium power, also just lost the active force of jack-up Decompression valves flap, described Decompression valves flap just resets under the effect of Returnning spring, and drive piston rod and piston synchronous moves, because be full of medium in the piston cylinder this moment, medium in the piston cylinder must be discharged gradually by the piston aperture when therefore piston moves down, thereby so that the Decompression valves flap can not quick closedown, can only be along with the gradually discharge of piston cylinder medium slowly closing.
The beneficial effects of the utility model are: adopt said structure, when the main valve clack quick closedown, because main valve clack has blocked suddenly flowing of pipeline medium, the kinetic energy of flowing medium will convert pressure energy to this moment, namely produce water hammer pressure.Because the utility model is provided with Decompression valves at main valve clack, and described Decompression valves is slowly closing, therefore in moment of main valve clack quick closedown, Decompression valves still is in opening state, thereby so that the water hammer pressure that produces during the main valve clack quick closedown can release effectively by Decompression valves, and then the water hammer pressure when effectively having reduced closure of check ring.
The utility model can further be set to described baffle plate and be installed on the main valve clack by the baffle plate bearing pin, and described baffle plate is spent less than 90 around the angle of baffle plate bearing pin rotation.
The utility model also can further be set to described Decompression valves valve body and be spirally connected and be fixed on the main valve clack.
Description of drawings
Fig. 1 is the structural representation of main valve clack closed condition in the utility model;
Fig. 2 is the structural representation of main valve clack opening state in the utility model;
Fig. 3 is the I section enlarged view of Fig. 1.
Embodiment
Such as Fig. 1,2, provided a kind of safety check that can reduce water hammer pressure shown in 3, comprise main valve body 1, main valve clack 2, main valve body 1 is provided with water intake 11 and water outlet 12, in the described main valve clack 2 hinged inner chambers that are installed between main valve body water intake 11 and the water outlet 12, described main valve clack 2 is provided with baffle plate 3 towards the end face 21 of main valve body water intake 11, described main valve clack 2 is fixed with Decompression valves 4 on the end face 22 of main valve body water outlet 12, described Decompression valves 4 comprises Decompression valves valve body 41, Decompression valves flap 42, flap push rod 43, Returnning spring 44, piston cylinder 45, piston rod 46, piston 47, Decompression valves valve body 41 is spirally connected and is installed in main valve clack 2 on the end face 22 of main valve body water outlet 12, Decompression valves flap 42 is installed in the inner chamber of Decompression valves valve body 41, described flap push rod 43 is arranged in the main valve clack 2, one end of flap push rod 43 and Decompression valves flap 42 1 end end faces are affixed, one end of described baffle plate 3 by the baffle plate bearing pin 5 hinged main valve clacks 2 that are fixed on the end face 21 of main valve body water intake 11, and described baffle plate 3 is spent less than 90 around the angle of baffle plate bearing pin 5 rotations, join on the other end top of the other end of baffle plate 3 and flap push rod 43, the cross section of described piston cylinder 45 structure that takes the shape of the letter U, and the opening end of U-shaped piston cylinder 45 is towards the water outlet 12 of main valve body 1, installing Returnning spring 44 between the other end end face of the bottom surface of U-shaped piston cylinder 45 and Decompression valves flap 42, piston rod 46 is arranged in the piston cylinder 45, and piston rod 46 is positioned on this end end of piston cylinder 45 and is equiped with piston 47, the other end and Decompression valves flap 42 that piston rod 46 is positioned at outside the piston cylinder 45 are affixed, also are provided with the piston aperture 471 of axial perforation piston 47 both ends of the surface on the described piston 47.Because the utility model is provided with Decompression valves 4 at main valve clack 2, and described Decompression valves 4 is slowly closings, therefore in moment of main valve clack 2 quick closedowns, Decompression valves 4 still is in opening state, thereby so that the water hammer pressure that produces during main valve clack 2 quick closedown can release effectively by Decompression valves 4, and then the water hammer pressure when effectively having reduced closure of check ring.
Claims (3)
1. safety check that can reduce water hammer pressure, comprise main valve body, main valve clack, main valve body is provided with water intake and water outlet, in the hinged inner chamber that is installed between main valve body water intake and the water outlet of described main valve clack, it is characterized in that: described main valve clack is provided with baffle plate towards the end face of main valve body water intake, described main valve clack is fixed with Decompression valves on the end face of main valve body water outlet, described Decompression valves comprises the Decompression valves valve body, the Decompression valves flap, the flap push rod, Returnning spring, piston cylinder, piston rod, piston, the Decompression valves valve body is installed in main valve clack on the end face of main valve body water outlet, the Decompression valves flap is installed in the inner chamber of Decompression valves valve body, described flap push rod is arranged in the main valve clack, one end of flap push rod and Decompression valves flap one end end face are affixed, the hinged main valve clack that is fixed in of one end of described baffle plate is on the end face of main valve body water intake, join on the other end top of the other end of baffle plate and flap push rod, the cross section of the described piston cylinder structure that takes the shape of the letter U, and the opening end of U-shaped piston cylinder is towards the water outlet of main valve body, install Returnning spring between the other end end face of the bottom surface of U-shaped piston cylinder and Decompression valves flap, piston rod is arranged in the piston cylinder, and piston rod is positioned on this end end of piston cylinder and is equiped with piston, it is affixed that piston rod is positioned at the piston cylinder outer the other end and Decompression valves flap, also is provided with the piston aperture of axial perforation side face of piston ring on the described piston.
2. a kind of safety check that can reduce water hammer pressure according to claim 1, it is characterized in that: described baffle plate is installed on the main valve clack by the baffle plate bearing pin, and described baffle plate around the angle of baffle plate bearing pin rotation less than 90 degree.
3. a kind of safety check that can reduce water hammer pressure according to claim 1, it is characterized in that: described Decompression valves valve body is spirally connected and is fixed on the main valve clack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220449157.9U CN202733070U (en) | 2012-09-05 | 2012-09-05 | Check valve capable of reducing water hammer pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220449157.9U CN202733070U (en) | 2012-09-05 | 2012-09-05 | Check valve capable of reducing water hammer pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733070U true CN202733070U (en) | 2013-02-13 |
Family
ID=47658771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220449157.9U Expired - Lifetime CN202733070U (en) | 2012-09-05 | 2012-09-05 | Check valve capable of reducing water hammer pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733070U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818051A (en) * | 2012-09-05 | 2012-12-12 | 浙江超达阀门股份有限公司 | Check valve capable of reducing pressure of water hammer |
| CN106949266A (en) * | 2017-03-22 | 2017-07-14 | 上海交通大学 | Flap swing check valve |
| CN107035898A (en) * | 2017-05-15 | 2017-08-11 | 中广核研究院有限公司 | Anticorrosion swing type non-return valve |
-
2012
- 2012-09-05 CN CN201220449157.9U patent/CN202733070U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818051A (en) * | 2012-09-05 | 2012-12-12 | 浙江超达阀门股份有限公司 | Check valve capable of reducing pressure of water hammer |
| CN106949266A (en) * | 2017-03-22 | 2017-07-14 | 上海交通大学 | Flap swing check valve |
| CN107035898A (en) * | 2017-05-15 | 2017-08-11 | 中广核研究院有限公司 | Anticorrosion swing type non-return valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHAODA VALVE GROUP CO., LTD. Free format text: FORMER NAME: ZHEJIANG CHAODA VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangbei Avenue Oubei town of Yongjia County of Wenzhou City, Zhejiang province 325000 Patentee after: CHAODA VALVE GROUP Co.,Ltd. Address before: Jiangbei Avenue Oubei town of Yongjia County of Wenzhou City, Zhejiang province 325000 Patentee before: ZHEJIANG CHAODA VALVE Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170720 Address after: 323000 Nanming road Zhejiang city Lishui province Shuige Industrial Zone No. 772 Patentee after: CHAODA VALVE GROUP LISHUI CO.,LTD. Address before: Jiangbei Avenue Oubei town of Yongjia County of Wenzhou City, Zhejiang province 325000 Patentee before: CHAODA VALVE GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |