CN202252165U - Swing micro-resistance slow closing check valve - Google Patents
Swing micro-resistance slow closing check valve Download PDFInfo
- Publication number
- CN202252165U CN202252165U CN2011203818184U CN201120381818U CN202252165U CN 202252165 U CN202252165 U CN 202252165U CN 2011203818184 U CN2011203818184 U CN 2011203818184U CN 201120381818 U CN201120381818 U CN 201120381818U CN 202252165 U CN202252165 U CN 202252165U
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Abstract
The utility model discloses a swing micro-resistance slow closing check valve, which comprises a valve body, wherein two ends of the valve body are provided with an inlet and an outlet; the upper side of the valve body is provided with a valve cover; a valve seat is arranged in the valve body; a valve shaft above the valve seat is arranged in the valve body, and is hinged with a valve clack; a hydraulic cylinder is connected to the upper side of the valve cover; an air hole is formed at the upper end of the cylinder body; a piston rod is inserted into the valve body from the valve cover, and a section of short connecting rod is hinged between the piston rod and the valve clack; the side face of the lower section of the hydraulic cylinder is provided with an upper inlet/outlet and a lower inlet/outlet; the upper inlet/outlet is connected with the inner side of the inlet of the valve body through an upper regulating valve and a pipeline; and the lower inlet/outlet is connected with the inner side of the outlet of the valve body through a lower regulating valve and a pipeline. The hydraulic cylinder is connected above the valve cover, the piston rod of the hydraulic cylinder is inserted into the valve body through a piston rod hole on the valve core and hinged to the valve clack, the upper end of the hydraulic cylinder is provided with the air hole, and the upper and lower inlets/outlets on the side face of the lower section of the hydraulic cylinder are connected with the inner side of the valve body through the regulating valves. When the valve is opened, the resistance of the valve to a fluid medium can be reduced, and when the valve is closed, a water hammer phenomenon is avoided.
Description
Technical field
The utility model relates to the little resistance device and the damping device of a kind of Swing check valve, particularly a kind of Swing check valve.
Background technique
Safety check is the valve with the mobile keying of fluid.Safety check is installed on the fluid pipe-line, can let fluid only flow towards a direction, and safety check can cut out automatically when the fluid in the fluid pipe-line flows backwards.Safety check load change when closing is bigger, and the closing property of safety check influences the hydrodynamic parameters in the pipeline.Safety check is when cutting out, and the fitness for purpose safety check is swift in response, i.e. quick closedown when flowing backwards appears in flowing medium; By the flowing medium that flows backwards; If but close too fastly, and the flow velocity of flowing medium reduces to zero rapidly from the refluence speed of maximum in the pipeline, and the kinetic energy of flowing medium changes into static energy rapidly; Make that the pressure of flowing medium raises rapidly in the pipeline, generation possibly have the water hammer of destruction to pipe-line system; Safety check is the valve with the mobile keying of fluid, and when valve used, valve plate was the static energy with the fluid opened by pressure that produces, and valve plate has the tendency of closing when opening, when valve plate is opened closing the mobile of tendency convection cell can the generation resistance.
Swing check valve has valve body; Two ends of valve body has import and the outlet of axis on same horizontal line; The upside of valve body has the valve gap of level; Towards outlet one side valve seat is arranged in the valve body, the horizontal valve shaft with the inlet/outlet axis normal is arranged in the valve body above valve seat, in the valve body, be hinged with the flap that matches with valve seat on the valve shaft.Safety check is installed on the fluid pipe-line and uses, and import is connected in the upper reaches of fluid.Fluid is when forward flow; The fluid of forward flow can promote the valve seat that spool leaves in the valve body and rotate around valve shaft, opens safety check, when the fluid in the fluid pipe-line flows backwards; The fluid that flows backwards can promote spool and slide into forward on the valve seat, closure of check ring along valve axis.If be not connected with damping device and little resistance device on the valve shaft of Swing check valve, fluid resistance was big when safety check was opened, and when fluid flow backwards, spool slided on the valve seat apace, closure of check ring, when closing, can produce water hammer.In the existing technology, the damping device that the valve shaft of Swing check valve has the little resistance device that is connected with weight and valve shaft to be connected with oil hydraulic cylinder.Little resistance device of the weight of this Swing check valve takes up space greatly, and is very inconvenient in the use; Damping device is a hydraulic type, and size is very big, complex structure, and cost is high, easy fault.
Summary of the invention
The purpose of the utility model is or not very big, simple in structure in order to overcome above-mentioned deficiency, to propose a kind of size, and cost is lower, not the rotary-open type Tiny Drag Slow Shut Check Valves of easy fault.
The utility model is realized with following method.
The rotary-open type Tiny Drag Slow Shut Check Valves has valve body, and two ends of valve body has import and the outlet of axis on same horizontal line, and the upside of valve body has valve gap; Towards outlet one side valve seat is arranged in the valve body, the horizontal valve shaft with the inlet/outlet axis normal is arranged in the valve body above valve seat, in the valve body, be hinged with the flap that matches with valve seat on the valve shaft; The outer top of valve gap is connected with oil hydraulic cylinder, and the lower end of hydraulic cylinder is connected in the outside of valve gap, and there is pore the upper end of hydraulic cylinder; The piston rod hole is arranged on the valve gap; Insert in the valve body in the piston rod hole of the piston rod of oil hydraulic cylinder from the valve gap, is hinged with one section short connecting rod, the side of hydraulic cylinder hypomere between an end and the flap of piston rod in valve body; Upper and lower two import and export are arranged; Following import and export are near the lower end of hydraulic cylinder, and last import and export link to each other with the import of valve body is inboard with pipeline through the adjusted valve, and modulating valve linked to each other with the outlet of valve body is inboard with pipeline under following import and export were passed through.
During use, when valve opening, fluid flows out from outlet from the import flow valve of valve body; Because of pressure reduction before and after the valve and the active force that fluid flows rotarily open flap, flowing medium gets into the oil hydraulic cylinder cavity of resorption with the adjusted valve, the rising of promotion piston through modulating valve down simultaneously; The flap complete opening; At this moment, cavity pressure is identical with pipeline inner pressure under the oil hydraulic cylinder, oil hydraulic cylinder epicoele and atmosphere; Piston pressure reduction up and down produces pulling force upwards to piston, should make flap receive power upwards by pulling force upwards.During valve closing; Medium reverse flow or do not flow moment is because of pressure reduction before and after the valve and the fluid force of reverse flow and the deadweight of flap make the flap rotary closing, during the flap rotary closing; The pulling piston descends; Flow into oil hydraulic cylinder cavity of resorption flowing medium in the valve body through upper and lower modulating valve successively, the aperture of regulating upper and lower modulating valve by working condition requirement can the regulating piston rate of descent, and then the rotary closing speed of control flap.
The outer top of the utility model valve gap is connected with oil hydraulic cylinder, and the piston rod of oil hydraulic cylinder inserts in the valve body from the piston rod hole on the valve gap and is hinged on the flap, and there is pore the upper end of hydraulic cylinder, and the upper and lower import and export of hypomere side link to each other through in modulating valve and the valve body.During valve opening, can reduce the resistance of flowing medium, during valve closing, avoid producing water hammer through valve.
Below in conjunction with accompanying drawing, the utility model is done explanation further.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to a kind of rotary-open type Tiny Drag Slow Shut Check Valves of the invention scheme proposition of the utility model;
Fig. 2 is that the schematic representation in the closed procedure is being opened or closed to the rotary-open type Tiny Drag Slow Shut Check Valves;
Fig. 3 is the schematic representation of rotary-open type Tiny Drag Slow Shut Check Valves when full open.
Embodiment
Among Fig. 1 ~ Fig. 3, the rotary-open type Tiny Drag Slow Shut Check Valves has valve body 1, and two ends of valve body has the import of axis on same horizontal line and outlet 2,3; The upside of valve body has valve gap 4, towards outlet one side valve seat 5 is arranged in the valve body, and the horizontal valve shaft 6 with the inlet/outlet axis normal is arranged in the valve body above valve seat; In the valve body, be hinged with the flap 7 that matches with valve seat on the valve shaft, the outer top of valve gap is connected with oil hydraulic cylinder 8, and the lower end of hydraulic cylinder is connected in the outside of valve gap; There is pore 9 upper end of hydraulic cylinder, and piston rod hole 10 is arranged on the valve gap, and the piston rod 11 of oil hydraulic cylinder inserts in the valve body from the piston rod hole on the valve gap; Be hinged with one section short connecting rod 12 between an end and the flap of piston rod in valve body; The side of hydraulic cylinder hypomere has upper and lower two to import and export 13,14, the following lower end of importing and exporting near hydraulic cylinder; Last import and export link to each other with the import of valve body is inboard with pipeline through adjusted valve 15, and modulating valve 16 linked to each other with the outlet of valve body is inboard with pipeline under following import and export were passed through.
Claims (1)
1. a rotary-open type Tiny Drag Slow Shut Check Valves has valve body, and two ends of valve body has import and the outlet of axis on same horizontal line; The upside of valve body has valve gap, towards outlet one side valve seat is arranged in the valve body, and the horizontal valve shaft with the inlet/outlet axis normal is arranged in the valve body above valve seat; In the valve body, be hinged with the flap that matches with valve seat on the valve shaft, it is characterized in that: the outer top of valve gap is connected with oil hydraulic cylinder, and the lower end of hydraulic cylinder is connected in the outside of valve gap; There is pore the upper end of hydraulic cylinder, and the piston rod hole is arranged on the valve gap, and the piston rod of oil hydraulic cylinder inserts in the valve body from the piston rod hole on the valve gap; Be hinged with one section short connecting rod between an end and the flap of piston rod in valve body; There are upper and lower two import and export the side of hydraulic cylinder hypomere, the following lower end of importing and exporting near hydraulic cylinder; Last import and export link to each other with the import of valve body is inboard with pipeline through the adjusted valve, and modulating valve linked to each other with the outlet of valve body is inboard with pipeline under following import and export were passed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203818184U CN202252165U (en) | 2011-10-10 | 2011-10-10 | Swing micro-resistance slow closing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203818184U CN202252165U (en) | 2011-10-10 | 2011-10-10 | Swing micro-resistance slow closing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252165U true CN202252165U (en) | 2012-05-30 |
Family
ID=46113408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203818184U Expired - Fee Related CN202252165U (en) | 2011-10-10 | 2011-10-10 | Swing micro-resistance slow closing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252165U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110515A (en) * | 2014-06-30 | 2014-10-22 | 武汉圣禹排水系统有限公司 | Slowly-open slowly-close fully-open and vibration-free swing check valve |
| 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 |
| 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 |
| CN106838385A (en) * | 2017-04-18 | 2017-06-13 | 上正阀门集团有限公司 | The built-in check-valves of Slow Close |
| CN108468840A (en) * | 2018-05-21 | 2018-08-31 | 上海瑞晨环保科技有限公司 | Micro-resistance slowly-closed type underwater bottom valve |
| CN108662217A (en) * | 2018-06-30 | 2018-10-16 | 浙江理工大学 | Compound butterfly swing check valve |
| CN109139987A (en) * | 2017-06-19 | 2019-01-04 | 上海天纳克排气系统有限公司 | exhaust valve |
| CN109356118A (en) * | 2018-11-21 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Eulittoral zone keeps off discharge structure |
| CN113266688A (en) * | 2021-06-15 | 2021-08-17 | 黄建斌 | Slow-closing ball check valve |
| CN115038900A (en) * | 2020-01-31 | 2022-09-09 | 法国电力公司 | Retaining device for a flap of a non-return valve and method for positioning the device |
-
2011
- 2011-10-10 CN CN2011203818184U patent/CN202252165U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110515A (en) * | 2014-06-30 | 2014-10-22 | 武汉圣禹排水系统有限公司 | Slowly-open slowly-close fully-open and vibration-free swing check valve |
| 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 |
| 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 |
| CN106838385A (en) * | 2017-04-18 | 2017-06-13 | 上正阀门集团有限公司 | The built-in check-valves of Slow Close |
| CN109139987A (en) * | 2017-06-19 | 2019-01-04 | 上海天纳克排气系统有限公司 | exhaust valve |
| CN108468840A (en) * | 2018-05-21 | 2018-08-31 | 上海瑞晨环保科技有限公司 | Micro-resistance slowly-closed type underwater bottom valve |
| CN108662217A (en) * | 2018-06-30 | 2018-10-16 | 浙江理工大学 | Compound butterfly swing check valve |
| CN108662217B (en) * | 2018-06-30 | 2023-04-18 | 浙江理工大学 | Composite butterfly check valve |
| CN109356118A (en) * | 2018-11-21 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Eulittoral zone keeps off discharge structure |
| CN115038900A (en) * | 2020-01-31 | 2022-09-09 | 法国电力公司 | Retaining device for a flap of a non-return valve and method for positioning the device |
| CN113266688A (en) * | 2021-06-15 | 2021-08-17 | 黄建斌 | Slow-closing ball check 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: 20120530 Termination date: 20151010 |
|
| EXPY | Termination of patent right or utility model |