CN2314185Y - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN2314185Y CN2314185Y CN 97239356 CN97239356U CN2314185Y CN 2314185 Y CN2314185 Y CN 2314185Y CN 97239356 CN97239356 CN 97239356 CN 97239356 U CN97239356 U CN 97239356U CN 2314185 Y CN2314185 Y CN 2314185Y
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic cylinder
- valve body
- cavity
- oil hydraulic
- 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
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Abstract
The utility model relates to a check valve, comprising a valve body, a guide ring, a valve rod, a spring, a main valve plate, a guide iron and a valve seat. The utility model is characterized in that the outer side of the valve body is connected with a cavity body which is surrounded with a valve wall, and the cavity body is provided with a discharge hole on the valve wall which is connected with the valve body. The outer side of the cavity body is provided with a hydraulic cylinder, and a piston rod is connected with the valve body and the hydraulic cylinder of which outer side is provided with a valve cover. A water inlet of the valve body is communicated with the front cavity of the hydraulic cylinder through a connecting pipe, and a water outlet of the valve body is communicated with the back cavity of the hydraulic cylinder through the connecting pipe. The utility model has the quick-closing and the slow-closing functions and has the advantages of small size, light weight and convenient installation. The utility model does not need adjusting in the operation process and can weaken the water hammer generated in stopping a pump, and is suitable for the pump stations of high buildings, industrial and mining enterprises, etc.
Description
The utility model relates to the safety check that a kind of pumping plant is used.
The safety check of pumping plant use at present has two kinds usually, and a kind of is that speed is closed safety check, and its volume is little, and the function of having only fast apolipsis to return produces water hammer in the time of can not realizing weakening termination of pumping fully; Another kind is a buffer valve, its volume heaviness, and being in operation needs often debugging.
It is little that the purpose of this utility model provides a kind of volume, easy for installation, in operating process, need not debug, and the safety check of the water hammer that produces can weaken termination of pumping effectively the time.
The purpose of this utility model is achieved through the following technical solutions, a kind of safety check, comprise valve body, guide ring, valve rod, spring, main valve plate, guiding iron and valve seat, it is characterized in that the cavity that the outer side joint one at valve body is surrounded by the valve wall, on the valve wall that cavity links to each other with valve body, have two discharge orifices, communicate with the water intake and the water outlet of valve body respectively; The outside of cavity is connected to oil hydraulic cylinder, and piston rod connects cavity and oil hydraulic cylinder, and there is attached valve plate on the top of piston rod, and the end of piston rod has piston; The outside of oil hydraulic cylinder is provided with valve gap; The water intake of valve body communicates with the ante-chamber of oil hydraulic cylinder by connecting tube, and the water outlet of valve body communicates with the back cavity of oil hydraulic cylinder by connecting tube.
Have the function of quick closing valve and slow-closure type valve concurrently by the safety check of technique scheme design, its volume is little, and is in light weight, easy for installation, in operating process, need not debug, and the water hammer that produces can weaken termination of pumping effectively the time, be applicable to the pumping plant of departments such as tall building, industrial and mining enterprise and railway.
Fig. 1 is a structural representation of the present utility model, 1-valve body, 2-guide ring, 3-valve rod, 4-spring, 5-main valve plate, 6-guiding iron, 7-valve seat, 8-cavity, 9-discharge orifice, 10-oil hydraulic cylinder, the attached valve plate of 11-piston rod 12-as shown in the figure, 13-piston, 14-valve gap, 15-connecting tube, 16-connecting tube, 17-discharge orifice.
Describe embodiment of the present utility model and working principle in detail below in conjunction with accompanying drawing.
Comprise valve body 1, guide ring 2, valve rod 3, spring 4, main valve plate 5, guiding iron 6 and valve seat 7, the cavity 8 that the outer side joint one of valve body 1 is surrounded by the valve wall, on cavity 8 and valve wall that valve body 1 links to each other, have discharge orifice 9 and discharge orifice (17), discharge orifice (9) communicates with water outlet, and discharge orifice (17) communicates with water intake; The outside of cavity 8 is connected to oil hydraulic cylinder 10, and piston rod 11 connects cavity 8 and oil hydraulic cylinder 10, and there is attached valve plate 12 on the top of piston rod 11, and the end of piston rod 11 has piston 13; The outside of oil hydraulic cylinder 10 is provided with valve gap 14; The water intake of valve body 1 communicates by the ante-chamber of connecting tube 15 with oil hydraulic cylinder 10, and the water outlet of valve body 1 communicates by the back cavity of connecting tube 16 with oil hydraulic cylinder 10.
The utility model can be contained on the pipeline by water (flow) direction is horizontal or vertical, when water pump is opened, valve water intake pressure raises, press water promotes main valve plate 5 along guide ring 2 upwards or move forward, main valve plate 5 is opened, other has the ante-chamber of low amounts of water through connecting tube 15 inflow oil hydraulic cylinders 10, promotes piston motion, and attached valve plate 12 is opened; During termination of pumping, main valve plate 5 is closed rapidly under the promotion of pressure of return water and spring 4, block main current, part backwater flows to the valve water intake by attached valve plate 12, part backwater flows into the back cavity of oil hydraulic cylinder 10 through connecting tube 16, promoting piston makes attached valve plate 12 close the water hammer that has produced when having weakened termination of pumping effectively.
Claims (1)
1. safety check, comprise valve body (1), guide ring (2), valve rod (3), spring (4), main valve plate (5), guiding iron (6) and valve seat (7), it is characterized in that the cavity (8) that the outer side joint one of described valve body (1) is surrounded by the valve wall, on cavity (8) and valve wall that valve body (1) links to each other, have discharge orifice (9) and discharge orifice (17), discharge orifice (9) communicates with water outlet, discharge orifice (17) communicates with water intake, the outside of cavity (8) is connected to oil hydraulic cylinder (10), piston rod (11) connects cavity (8) and oil hydraulic cylinder (10), there is attached valve plate (12) on the top of piston rod (11), the end of piston rod (11) has piston (13), the outside of oil hydraulic cylinder (10) is provided with valve gap (14), the water intake of valve body (1) communicates by the ante-chamber of connecting tube (15) with oil hydraulic cylinder (10), and the water outlet of valve body (1) communicates by the back cavity of connecting tube (16) with oil hydraulic cylinder (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97239356 CN2314185Y (en) | 1997-12-12 | 1997-12-12 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97239356 CN2314185Y (en) | 1997-12-12 | 1997-12-12 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314185Y true CN2314185Y (en) | 1999-04-14 |
Family
ID=33949373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97239356 Expired - Fee Related CN2314185Y (en) | 1997-12-12 | 1997-12-12 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314185Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100572811C (en) * | 2004-04-19 | 2009-12-23 | 信浓绢糸株式会社 | The volume pump check valve |
| CN106838389A (en) * | 2017-03-31 | 2017-06-13 | 合肥悦兰信息技术有限公司 | A kind of controllable check valve |
-
1997
- 1997-12-12 CN CN 97239356 patent/CN2314185Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100572811C (en) * | 2004-04-19 | 2009-12-23 | 信浓绢糸株式会社 | The volume pump check valve |
| CN106838389A (en) * | 2017-03-31 | 2017-06-13 | 合肥悦兰信息技术有限公司 | A kind of controllable check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |