CN2263246Y - Pilot type slowly opening and slowly-closing check valve - Google Patents
Pilot type slowly opening and slowly-closing check valve Download PDFInfo
- Publication number
- CN2263246Y CN2263246Y CN 96232364 CN96232364U CN2263246Y CN 2263246 Y CN2263246 Y CN 2263246Y CN 96232364 CN96232364 CN 96232364 CN 96232364 U CN96232364 U CN 96232364U CN 2263246 Y CN2263246 Y CN 2263246Y
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- China
- Prior art keywords
- valve
- piston
- safety check
- hydraulic control
- housed
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- 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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- Fluid-Driven Valves (AREA)
- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a pilot type slowly opening and slowly-closing check valve, which is provided with a hydraulic control valve component. A pilot valve component is arranged on the hydraulic control valve component, and a communication water pipe is connected between the pilot valve component and a water outlet cavity of the hydraulic control valve component. The utility model has the advantages of simple structure, stable work, no impact and noise, good reliability and long service life, and can eliminate the water hammer in the opening and the closing of a water pump.
Description
The utility model relates to the valve in the engineering element in the common engineering, is a kind of safety check, a kind ofly in other words conj.or perhaps is particularly suitable for the influence of water hammer is reduced to minimum valve.
At present, abroad the slow closed check damper that is using is a Slow Close formula waterpower control safety check, and its shortcoming is that the Slow Close process is a constant speed.Domestic representational slow closed check damper is little resistance formula buffer valve, and its shortcoming is to slow down suddenly in the course of action, and slow throttle down, and its piston again and hyoplastron bump against suddenly, can reduce its working life, and send very big sound.In addition, the valve that all are above-mentioned all can only Slow Close, and can't delay out.
The purpose of this utility model provides a kind of can delaying out again by Slow Close, and simple in structure, stable working is reliable, good airproof performance, noise free, and produces the leading type slow open and close safety check of destructive water hammer can avoid water pump to open and close the time.
Technical solution of the present utility model is: a kind of leading type slow open and close safety check, adopted the design that is different from prior art: a hydraulic control valve assembly is arranged, on the hydraulic control valve assembly guide valve component is housed, is connected between the water chamber of guide valve component and hydraulic control valve assembly and is communicated with water pipe.
Hydraulic control valve assembly described in the utility model adopts spring diaphragm type or piston type.Certainly, also can adopt other suitable construction forms.
Spring diaphragm type hydraulic control valve assembly described in the utility model has a valve body, lid is housed on the valve body, valve gap and valve body central authorities are coated with valve rod, the valve rod lower end is contained in and is arranged in the valve seat that valve inleting water chamber and water chamber cross, main valve piston also is housed on the valve rod, O type circle is equipped with in the main valve piston lower end, pressing plate is equipped with in O type circle and main valve piston lower end, in the main valve piston is cavity, with valve cover chamber spring is housed in the cavity, valve body and valve cover chamber are equipped with diaphragm, and the diaphragm annular internal edge is loaded on the main valve piston upper end by the diaphragm pressing plate.Certainly, also can adopt the hydraulic control valve assembly of other suitable construction forms.
On the water pipe described in the utility model throttle valve is housed.
There is one to be contained in the pilot valve piston that is positioned at valve gap internal upper part valve stem tip in the guide valve component described in the utility model, center, valve stem tip are equipped with lock screw in the pilot valve piston, valve gap middle part with the corresponding circumference of the water pipe of adorning place have adjustment hole, adjusting screw is housed in the adjustment hole, Vertical direction has the duct that communicates with adjustment hole in the valve gap, and the duct lower ending opening is to the valve gap lower end surface.Certainly, also can adopt other suitable structural types.
Pilot valve piston center described in the utility model is the tapped hole that matches with the valve rod upper end.
Water pipe lower end described in the utility model is connected with water chamber in the valve body; Be terminated at the corresponding circumference of valve gap and adjustment hole place on the water pipe, be connected with the pilot valve chamber.
The utility model has the advantages that: simple in structure, can Slow Close, can delay out again, overcome similar functions safety check in the past, shortcoming that can only Slow Close.Its course of action is constant speed, speed change, constant speed more gradually, thereby the piston of having eliminated little resistance formula buffer valve suddenly with the hyoplastron bump and the phenomenon of deceleration suddenly, thereby stable working, no bump and Strike note, noise free, good reliability, long service life.Opening-closing process (when beginning speed change) can be regulated, and Slow Close is slow to be opened speed and can regulate.Little, the power saving of loss of head.Good airproof performance.Produce destructive water hammer in the time of can avoiding water pump to open and close.
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the structural drawing of a kind of leading type slow open and close safety check of the present utility model.
Schematic representation when Fig. 2 begins Slow Close for safety check shown in Figure 1.
Schematic representation when Fig. 3 is 10-15% for safety check aperture shown in Figure 1.
Schematic representation when Fig. 4 is in closed condition for safety check shown in Figure 1.
Fig. 1, Fig. 2, Fig. 3, Fig. 4 have described an embodiment of the present utility model.This safety check roughly is divided into four parts: pilot valve, water pipe, throttle valve and hydraulic control valve.What hydraulic control valve in this example adopted is the spring diaphragm type, by valve gap 3, valve rod 7, diaphragm pressing plate 9, diaphragm 10, spring 11, main valve piston, and 12, compositions such as pressing plate 13, valve body 14, valve seat 15, O type circle 16.Pilot valve is made up of the valve gap 3 of pilot valve piston 5, O type circle 4, lock screw 6, adjusting screw 8 and double as pilot valve housing.The interior center hole of pilot valve piston 5 is a tapped hole, can turn to regulate its position on valve rod 7, thereby control valve begins the position of speed change.Lock screw 6 is used for pilot valve piston 5 is locked on the valve rod 7.Adjusting screw 8 is used for controlling the flow in the aperture of left side.Throttle valve 2 is used for controlling the flow of water in the water pipe 1.Water pipe 1 is used for transmission pressure water to the control room.
Working principle of the present utility model is,
At first as shown in Figure 1; whole safety check is in full-gear; when water pump is shut down; P1=P2; P0=0; the active area of P1 is bigger than the active area of P2; therefore downward active force is greater than the active force that makes progress; diaphragm 10 drives main valve piston 12; valve rod 7; diaphragm pressing plate 9; pressing plate 13; O type circle 16 grades move down fast; thereby driving pilot valve piston 5 moves down; when pilot valve piston 5 is displaced downwardly to position shown in Figure 2; when aperture (the opening degree degree of calling off of valve) reached 10-20% (can set), the flow area of water pipe 1 began to be subjected to gradually the restriction of piston 5, and the flow that flows into the press water in control room reduces gradually; the speed of moving down of main valve piston 12 grades another setting speed that slows down gradually; when being displaced downwardly to position shown in Figure 3, water can only be gone into the control room by the control aperture from valve gap, and flow is reduced to minimum value; main valve piston 12 grades move down with jogging speed, until closing door (state shown in Figure 4) fully.
When starting mode of pump, the course of action of safety check is just opposite with above-mentioned pass closed procedure.Press water in the control room is pressed the control room of the diaphragm of the outflow of the control aperture from valve gap in the other direction shown in the thin arrow 10 tops among Fig. 3, move on diaphragm 10 drive main valve pistons etc. are slow, move thereby drive on the pilot valve piston 5, when moving to position shown in Figure 3 on the pilot valve piston 5, the restriction to water pipe 1 flow area is removed in piston 5 beginnings gradually, the flow that flows out the water in control room increases gradually, the speed of moving on the main valve piston etc. is accelerated gradually, when on when moving to position shown in Figure 2, the flow that flows out the water in control room increases to maximum value, main valve pistons etc. are to move on the prestissimo, until opening valve (state as shown in Figure 1) fully.
Claims (7)
1, a kind of leading type slow open and close safety check is characterized in that: a hydraulic control valve assembly is arranged, on the hydraulic control valve assembly guide valve component is housed, be connected between the water chamber of guide valve component and hydraulic control valve assembly and be communicated with water pipe.
2, leading type slow open and close safety check according to claim 1 is characterized in that: the hydraulic control valve assembly adopts spring diaphragm type or piston type.
3, leading type slow open and close safety check according to claim 2, it is characterized in that: spring diaphragm type hydraulic control valve assembly has a valve body, valve gap is housed on the valve body, valve gap and valve body central authorities are coated with valve rod, the valve rod lower end is contained in the valve seat that is arranged in valve inleting water chamber and water chamber intersection, main valve piston also is housed on the valve rod, O type circle is equipped with in the main valve piston lower end, pressing plate is equipped with in O type circle and main valve piston lower end, in the main valve piston is cavity, with valve cover chamber spring is housed in the cavity, valve body and valve cover chamber are equipped with diaphragm, and the diaphragm annular internal edge is loaded on the main valve piston upper end by the diaphragm pressing plate.
4, according to claim 1 or 2,3 described leading type slow open and close safety check, it is characterized in that: throttle valve is housed on the water pipe.
5, according to claim 1 or 2,3 described leading type slow open and close safety check, it is characterized in that: have one to be contained in the pilot valve piston that is positioned at valve gap internal upper part valve stem tip in the guide valve component, center, valve stem tip are equipped with lock screw in the pilot valve piston, valve gap middle part with the corresponding circumference of the water pipe of adorning have adjustment hole, adjusting screw is housed in the adjustment hole, Vertical direction has the duct that communicates with adjustment hole in the valve gap, and the duct lower ending opening is to the lower end surface of valve gap.
6, leading type slow open and close safety check according to claim 5 is characterized in that: pilot valve piston center is the tapped hole that matches with the valve rod upper end.
7, leading type slow open and close safety check according to claim 5, it is characterized in that: the water pipe lower end is connected with the water chamber of valve body; Be terminated at valve gap middle part and adjustment hole corresponding position on the water pipe, be connected with the pilot valve chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232364 CN2263246Y (en) | 1996-07-19 | 1996-07-19 | Pilot type slowly opening and slowly-closing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232364 CN2263246Y (en) | 1996-07-19 | 1996-07-19 | Pilot type slowly opening and slowly-closing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2263246Y true CN2263246Y (en) | 1997-09-24 |
Family
ID=33909337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96232364 Expired - Fee Related CN2263246Y (en) | 1996-07-19 | 1996-07-19 | Pilot type slowly opening and slowly-closing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2263246Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463916B (en) * | 2007-12-18 | 2010-09-15 | 桑红旗 | Anti-backflow valve and self-rotation preventing water meter with the same |
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN108895166A (en) * | 2018-08-27 | 2018-11-27 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of valve |
-
1996
- 1996-07-19 CN CN 96232364 patent/CN2263246Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463916B (en) * | 2007-12-18 | 2010-09-15 | 桑红旗 | Anti-backflow valve and self-rotation preventing water meter with the same |
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN108895166A (en) * | 2018-08-27 | 2018-11-27 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of valve |
| CN108895166B (en) * | 2018-08-27 | 2019-11-08 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of 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 |