CN2414267Y - Leakage free microresistance closing-delayed check valve - Google Patents
Leakage free microresistance closing-delayed check valve Download PDFInfo
- Publication number
- CN2414267Y CN2414267Y CN 00200767 CN00200767U CN2414267Y CN 2414267 Y CN2414267 Y CN 2414267Y CN 00200767 CN00200767 CN 00200767 CN 00200767 U CN00200767 U CN 00200767U CN 2414267 Y CN2414267 Y CN 2414267Y
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- valve
- piston
- cylinder
- way valve
- butterfly
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- Expired - Fee Related
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- Details Of Valves (AREA)
- Check Valves (AREA)
- Lift Valve (AREA)
Abstract
The utility model belongs to a valve. The aim of the utility model is to eliminate the water hammer phenomenon of a one-way valve and the leakage of the connecting parts of a valve body so as to prolong the service life of the valve and improve the using effect of the valve, and therefore, the utility model adopts that a delay device for controlling the valve to be slowly closed is arranged in the valve body. The valve is positioned on a piston rod; combined seal components are positioned in the inner diameters of the valve body and a valve cover. The utility model overcomes the damage of the water hammer phenomenon to the valve, prolongs the service life of the valve and improves the using effect.
Description
The utility model relates to a kind of valve.
Its function of one-way valve (or claiming safety check) is unidirectional Open valve, stops liquid return valve in the pipeline automatically.Traditional one-way valve mainly relies on the pressure of liquid refluence in the pipeline greater than positive flowing pressure when closing, but this pressure difference can produce water hammer to valve, the rapid valve body of the pressure of refluence, and valve and valve seat collide rapidly, cause the damage of valve and valve seat.Especially bigbore one-way valve, water hammer is even more serious.On the other hand, traditional one-way valve has only metallic shim usually one, easily causes the leakage of valve body connection part, and what influence valve makes life-span and stability, also easily causes environmental pollution.
The purpose of this utility model provides closes one-way valve after a kind of nothing is leaked little resistance, eliminates water hammer, the leakage of stopping the valve body connection part, thereby the working life of prolongation valve, the using effect of raising valve.
The utility model realizes that the method for purpose is to be provided with the time delay device that a control valve is slowly closed in valve body, and valve is positioned on the piston rod, and composite sealing assembly is positioned at the internal diameter of valve body and valve gap.Said structure is realized the purpose of this utility model.
The utility model has the advantages that with comparatively simple structure to have overcome water hammer that there be not the destruction of water hammer to valve body and valve in the in use slow cut-off valve road of valve.Thereby prolonged the working life of valve greatly, and had good sealing effect.Can effectively guarantee the long-term stability operation of valve.The utlity model has unique sealing configuration, sealing effect is safe and reliable, does not have to leak, and using effect is good, can not cause environmental pollution.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model
As shown in Figure 1, the utility model is made up of valve body 1, valve seat 8, valve 5 and composite sealing assembly 6.Be provided with the time delay device that a control valve is slowly closed in valve body, valve is positioned on the piston rod 9.Described time delay device is by cylinder rack 13, piston/cylinder 12, piston 11, discharge orifice 15, butterfly one-way valve 10 and piston rod 9 constitute, on the cylinder rack that piston/cylinder is positioned at valve seat is connected, an end of piston/cylinder is established the butterfly one-way valve, and the opening end of butterfly one-way valve is identical with valve body opening end direction.Discharge orifice is positioned at the butterfly one-way valve end of piston/cylinder.In the piston/cylinder of piston between piston rod and butterfly one-way valve.Piston rod one end is connected with the piston that is positioned at cylinder body, and the other end is positioned at the stem guiding cover 3 of the outer valve rack of piston/cylinder.
Valve is on the piston rod between piston/cylinder and the valve rack 2.Composite sealing assembly 6 is by seal sleeve 62, and cushion rubber 61 and Graphite pad 63 constitute, and seal sleeve is positioned at the internal diameter of valve body and valve gap 14, is provided with cushion rubber between seal sleeve and valve body and the valve gap.
Seal sleeve is made by stainless steel, be provided with the twice cushion rubber altogether at the internal diameter corresponding position with valve body and valve gap, sealing is finished in rubber sealing sleeve and valve body and valve gap space like this, Graphite pad is positioned at valve body and valve gap connection part, is the pad of stainless steel graphite winding.Valve body and valve gap fuse with bolt 7.
The shape of valve 5 corresponding valve seats 8 is provided with concave edge at two peripheries of joining the position, and the valve mesopore is passed in the rear end of piston rod 9, and penetrates after the fixed valve in the stem guiding cover.The stem guiding cover is positioned at the correspondence of valve rack 2 of corresponding position in the hole, and string is provided with spring 4 on the piston rod between valve and the cylinder rack.The extension stroke of spring is the valve after sealing and the distance of valve rack.
During use, when ducted liquid forward (seeing for details shown in Figure of description 1 arrow), when promptly pressing to valve by the opening direction of one-way valve, valve opening passes through liquid, liquid enters from the butterfly one-way valve of piston/cylinder front end also that piston/cylinder is shifted piston onto the piston/cylinder bottom simultaneously, piston drives piston rod and moves in valve rod air guiding sleeve 3, drive valve pressure spring 4 Open valves on it.Positive pressure stops in pipeline, and when backpressure increased, valve was promoted by spring tension and liquid backpressure, presses to valve seat 8, because valve is positioned on the piston rod, drives piston rod simultaneously and promotes piston to the piston/cylinder nose motion.Because the backpressure of piston/cylinder makes the butterfly closed check valve of piston/cylinder front end, liquid between piston/cylinder front end and the piston can only be discharged along discharge orifice, thereby hindered piston rapidly to the cylinder body nose motion, piston is to the slow motion of piston/cylinder, the valve that is positioned on the piston rod also can only slowly be moved to valve seat, in the time of near the piston/cylinder front end is arrived in piston motion, valve just in time is closed on the valve seat, finishes and slowly closes one-way valve.Thereby avoided the impact force of water hammer.The speed of the size may command valve of obvious discharge orifice.
In a word, the utility model, simple in structure, can effectively overcome the infringement of water hammer, and sealing effect is a kind of desirable one-way valve to valve body.
Claims (4)
1, a kind of nothing is closed one-way valve after leaking little resistance, by valve body, and valve seat, valve and composite sealing assembly are formed, and it is characterized in that: be provided with the time delay device that a control valve is slowly closed in valve body, valve is positioned on the piston rod.
2, nothing according to claim 1 is closed one-way valve after leaking little resistance, it is characterized in that: described time delay device is by cylinder rack, piston/cylinder, piston, discharge orifice, butterfly one-way valve and piston rod constitute, on the cylinder rack that piston/cylinder is positioned at valve seat is connected, one end of piston/cylinder is established the butterfly one-way valve, the opening end of butterfly one-way valve is identical with valve body opening end direction, discharge orifice is positioned at the butterfly one-way valve end of piston/cylinder, in the piston/cylinder of piston between piston rod and butterfly one-way valve, piston rod one end is connected with the piston that is positioned at cylinder body, and the other end is positioned at the stem guiding cover of the outer valve rack of piston/cylinder.
3, nothing according to claim 1 is closed one-way valve after leaking little resistance, it is characterized in that: described valve is on the piston rod between piston/cylinder and the valve rack.
4, nothing according to claim 1 is closed one-way valve after leaking little resistance, it is characterized in that: described composite sealing assembly is by seal sleeve, cushion rubber and Graphite pad constitute, and seal sleeve is positioned at the internal diameter of valve body and valve gap, are provided with cushion rubber between seal sleeve and valve body and the valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00200767 CN2414267Y (en) | 2000-01-25 | 2000-01-25 | Leakage free microresistance closing-delayed check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00200767 CN2414267Y (en) | 2000-01-25 | 2000-01-25 | Leakage free microresistance closing-delayed check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2414267Y true CN2414267Y (en) | 2001-01-10 |
Family
ID=33570154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00200767 Expired - Fee Related CN2414267Y (en) | 2000-01-25 | 2000-01-25 | Leakage free microresistance closing-delayed check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2414267Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705217A (en) * | 2012-05-18 | 2012-10-03 | 大众阀门集团有限公司 | Large-diameter orange peel type multi-functional control valve of water pump |
-
2000
- 2000-01-25 CN CN 00200767 patent/CN2414267Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705217A (en) * | 2012-05-18 | 2012-10-03 | 大众阀门集团有限公司 | Large-diameter orange peel type multi-functional control valve of water pump |
| CN102705217B (en) * | 2012-05-18 | 2014-09-17 | 大众阀门集团有限公司 | Large-diameter orange peel type multi-functional control valve of water pump |
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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 |