CN2584967Y - Stop, check two-use valve - Google Patents
Stop, check two-use valve Download PDFInfo
- Publication number
- CN2584967Y CN2584967Y CN 02286256 CN02286256U CN2584967Y CN 2584967 Y CN2584967 Y CN 2584967Y CN 02286256 CN02286256 CN 02286256 CN 02286256 U CN02286256 U CN 02286256U CN 2584967 Y CN2584967 Y CN 2584967Y
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- valve rod
- rod
- dual purpose
- 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
Links
Images
Landscapes
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model relates to a stop and check two-purpose valve which comprises a valve body, a valve cap, a piston, a valve closing element, a valve rod, an operation handwheel, a valve opening indicating device, etc. The utility model is characterized in that a valve seat which is used for sealing and supporting the valve rod is arranged in the valve cap, a ring groove is formed by the lower end face of the valve seat and the inner end face of the valve cap, and a convex ring which is arranged in the ring groove is arranged on the valve rod, wherein, altitude difference is formed between the ring groove and the convex ring, so a gap is reserved in advance for the valve rod sliding upwards and downwards. At the same time, the valve rod only can turn without lifting, so a hinden rod mechanism is formed. The utility model leads the valve to open, close, seal and self lock by the medium self-energy and pressure of a piston type cylinder, so the stop and check two-purpose valve has the advantage of flexible and reliable operation, and countercurrent flow can be prevented. The valve rod which is in the hinden rod type structure leads the total height of the valve is lowered, and the installation is convenient. At the same time, the valve opening indicating device is also arranged on the utility model, which is convenient for flow control, and the utility model is suitable for large size and large flow rate pipeline occasions.
Description
Technical field
The utility model relates to makes the valve arrangement that medium opens and closes in the fluid piping system, especially have the dual purpose valve by, two kinds of functions of non-return.
Background technique
End, the non-return dual purpose valve is the valve member of doing the keying of medium in the fluid piping system and preventing adverse current, comprise valve body, valve gap, valve rod, by valve petal shelf, flap, the formations such as closing element that the flap gland is formed, prior art adopts rising stem (RS.) formula structure, the total height that makes valve is along with the aperture of valve increases and increases, the lifting of its valve, closing sealing reaches by the valve rod lifting entirely, add sealing force as withstanding inlet pressure, operate very hard, and do not reach seal request, grasp dynamics size is difficult to again hold, cause the handwheel diameter very big, the valve total height increases with valve opening.
Summary of the invention
Technical problem to be solved in the utility model be to overcome the defective of prior art and propose a kind of utilize valve rod do the valve lifting, by the energy of medium itself finish close sealing force by, non-return dual purpose valve, light to reach flexible operation, sealing is reliable.
Technical problem of the present utility model realizes by following technical proposal: end, the non-return dual purpose valve, it comprises having into, the valve body of outlet, valve body valve place is provided with by valve petal shelf, flap, the closing element that the flap gland is formed, the valve body top is provided with the valve gap that is tightly connected, valve stem tip is connected with handwheel, by valve body, the inner chamber that valve gap constitutes is a piston cylinder, be provided with in the piston cylinder and be tightly connected, have in the perforation, the piston of cavity of resorption passage, the piston upper end connects valve rod, lower end connection closed element, it is characterized in that being provided with in the described valve gap valve rod base of sealing supporting valve rod, this valve rod base lower end surface and valve gap interior edge face constitute annular groove, and valve rod is provided with the protruding circle that is arranged in annular groove, and the annular groove height forms the gap greater than protruding circle height.
Valve petal shelf in the described closing element cooperates with the downward extension of piston is movable, and fitting surface is provided with three roads " O " RunddichtringO.
The junction plane of described valve body and piston is provided with cylinder sleeve, and being tightly connected between piston and the cylinder sleeve is two roads " O " RunddichtringOs.
The passage in the upper and lower chamber of described perforation piston is to be arranged in the step-like first passage of piston, bottom and the second channel of superposed " V " type ring-type.
Be provided with the valve opening indicating device between described valve rod and the valve gap.
Described valve opening indicating device comprises the direction board that is located at the valve gap top, is located at the hand rest on valve rod top, is provided with the pointer that points to direction board in the hand rest.
Be provided with packing seal between the valve rod base of described sealing supporting valve rod and the valve rod, its top is by pressure cap and tight.
Be provided with spring between described piston and the valve petal shelf.
Described valve gap top is provided with pressure relief press button.
Compared with prior art, the blind rod type structure that the utility model has adopted valve rod only to change not lifting on the basis of piston structure, the medium self-energy pressure of setting up by piston cylinder makes valve opening and closing sealing self-locking, and not only flexible operation is reliable, and can prevent adverse current; The valve rod of blind rod type is done the valve lifting, and the total height of valve is reduced, and is convenient to install; This valve has also designed the valve opening indicating device simultaneously, is convenient to flow control, is applicable to big specification, large flow pipe road occasion.
Description of drawings
Fig. 1 has provided the utility model structural representation.
Embodiment
In conjunction with the accompanying drawing embodiment who provides the utility model is described in detail again.
As shown in Figure 1, comprise valve body 20 by, non-return dual purpose valve with medium inlet/outlet, the valve body top is provided with the valve gap 21 that is tightly connected, the inner chamber of being made up of valve body, valve gap is a piston cylinder 8, in be provided with piston 10, be provided with cylinder sleeve 19 between piston and the valve interior wall, seal by two roads " O " RunddichtringO 11 between this cylinder sleeve and the piston, extension, piston below is provided with the valve petal shelf 13 in the movable closing element that cooperates, and the fitting surface of valve petal shelf and piston extension is provided with 15 sealings of three roads " O " RunddichtringO.
Valve petal shelf 13 bottoms of valve closing element are provided with the flap of being fixed by flap gland 16 17, are the Sealings of sealed valve.For enhanced leaktightness, between described piston and valve petal shelf, be provided with spring 18.
Described piston 10 has the passage that connects upper and lower chamber, and this passage comprises the step-like first passage 14 that is arranged in piston, bottom and is positioned at the second channel 9 of top " V " type ring-type.
Simultaneously between described valve rod 4 tops and valve gap 21, be provided with the valve opening indicating device, this device comprises the direction board 24 that is located at the valve gap top, be located at the hand rest that is threaded 5 on valve rod top, be provided with the pointer 2 that points to direction board in the hand rest, reach the purpose of control valve aperture size by this device.
The pressure that the utility model utilizes the energy of medium own to be set up makes the valve opening and closing sealing, in order to alleviate the operated by handwheel power of opening valve, so the pressure relief press button (not shown) is set above valve gap.
Its dynamic structure is: rotate handwheel 1 during throttle down, can be observed valve opening by direction board 24 is zero, this moment, piston 10 epicoeles were because of the energy of hydraulic pressure own forms pressure, utilized play gap that valve rod reserves and piston 10 areas greater than the elastic force of valve aperture and spring 18 valve seal to cut out.Because piston upper chamber has pressure, and its this pressure is greater than the power of closing, and increase the weight of when opening valve along with the increase of working pressure, so the time handwheel rotary manipulation power bigger, but can alleviate steering force by pressure relief press button.
Claims (9)
1. one kind is ended, the non-return dual purpose valve, it comprises having into, the valve body (20) of outlet, valve body valve place is provided with by valve petal shelf (13), flap (17), the closing element that flap gland (16) is formed, the valve body top is provided with the valve gap (21) that is tightly connected, valve rod (4) top is connected with handwheel (1), by valve body, the inner chamber that valve gap constitutes is piston cylinder (8), be provided with in the piston cylinder and be tightly connected, have in the perforation, the piston of cavity of resorption passage (10), the piston upper end connects valve rod (4), the lower end connects the keying element, it is characterized in that being provided with in the described valve gap (21) valve rod base (6) of sealing supporting valve rod (4), this valve rod base lower end surface and valve gap interior edge face constitute annular groove, valve rod is provided with the protruding circle (7) that is arranged in annular groove, and the annular groove height highly forms the gap greater than protruding circle.
2. according to claim 1 by, non-return dual purpose valve, it is characterized in that the valve petal shelf (13) in the described keying element cooperates with piston (10) extension activity downwards, fitting surface is provided with three roads " O " RunddichtringOs (11).
3. according to claim 1 by, non-return dual purpose valve, it is characterized in that the described valve body (20) and the junction plane of piston (10) are provided with cylinder sleeve (19), being tightly connected between piston and the cylinder sleeve is two roads " O " RunddichtringOs (11).
4. according to claim 1 by, non-return dual purpose valve, the passage that it is characterized in that the upper and lower chamber of described perforation piston (10) is to be arranged in the step-like first passage (14) of piston, bottom and the second channel (9) of superposed " V " type ring-type.
5. according to claim 1 or 2 or 3 or 4 described, it is characterized in that being provided with the valve opening indicating device between described valve rod (4) and the valve gap (21) by, non-return dual purpose valve.
6. according to claim 5 by, non-return dual purpose valve, it is characterized in that described valve opening indicating device comprises the direction board (24) that is located at valve gap (21) top, be located at the hand rest (5) on valve rod (4) top, be provided with the pointer (2) that points to direction board in the hand rest.
7. according to claim 5 by, non-return dual purpose valve, it is characterized in that being provided with filler (22) sealing between the valve rod base (6) of described sealing supporting valve rod (4) and the valve rod, its top is by pressure cap (23) and tight.
8. according to claim 1 by, non-return dual purpose valve, it is characterized in that being provided with spring (18) between described piston (10) and the valve petal shelf (13).
9. according to claim 1 by, non-return dual purpose valve, it is characterized in that described valve gap (21) top is provided with pressure relief press button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286256 CN2584967Y (en) | 2002-11-22 | 2002-11-22 | Stop, check two-use valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286256 CN2584967Y (en) | 2002-11-22 | 2002-11-22 | Stop, check two-use valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584967Y true CN2584967Y (en) | 2003-11-05 |
Family
ID=33746998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02286256 Expired - Fee Related CN2584967Y (en) | 2002-11-22 | 2002-11-22 | Stop, check two-use valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584967Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363672C (en) * | 2006-02-16 | 2008-01-23 | 烟台冰轮股份有限公司 | Cut-off non-return differential pressure valve |
| CN103697199A (en) * | 2014-01-23 | 2014-04-02 | 宁波华成阀门有限公司 | Check fire-fighting valve |
-
2002
- 2002-11-22 CN CN 02286256 patent/CN2584967Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363672C (en) * | 2006-02-16 | 2008-01-23 | 烟台冰轮股份有限公司 | Cut-off non-return differential pressure valve |
| CN103697199A (en) * | 2014-01-23 | 2014-04-02 | 宁波华成阀门有限公司 | Check fire-fighting valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204942717U (en) | Diaphragm stop valve | |
| CN203363202U (en) | Piston type stop valve | |
| CN201851683U (en) | Bidirectional flow pneumatic angle place valve | |
| CN2584967Y (en) | Stop, check two-use valve | |
| CN102563111A (en) | High-pressure and energy-saving universal type parallel double-valve flap gate valve | |
| CN108167455A (en) | A kind of bidirectional sealed butterfly valve using rubber valve seat structure | |
| CN204717028U (en) | Pressure break ball screw flap type | |
| CN2401739Y (en) | Stop valve | |
| CN204677338U (en) | The engine electric-controlled injection apparatus of a kind of mine car | |
| CN2709772Y (en) | Protection device for preventing overfilling of liquified petroleum gas cylinder | |
| CN2469271Y (en) | Straight tube regulating globe-valve with leakage-proof function | |
| CN204042151U (en) | A kind of speed closes stop valve | |
| CN202451865U (en) | High-pressure energy-saving general type parallel double disc gate valve | |
| CN221300291U (en) | Novel integrative fracturing gate valve of hand liquid | |
| CN212203350U (en) | Corrugated pipe forged steel valve | |
| CN207349058U (en) | A kind of valve body structure of air-driven hydraulic pump relief valve | |
| CN2871991Y (en) | Diaphragm-balanced floating-ball valve | |
| CN2723788Y (en) | Pneuamtic balance automatic control valve | |
| JP4162168B2 (en) | Backflow prevention indoor water stop cock for cold regions | |
| CN212960022U (en) | Stop check valve | |
| CN2460810Y (en) | Full-sealed no-leakage multipurpose valve | |
| CN209294489U (en) | A kind of Novel hydraulic safety valve | |
| CN220816613U (en) | Plug valve with adjustable switching torque | |
| CN219198150U (en) | Positive feedback pressure control valve | |
| CN215806318U (en) | Double-sealing stop valve |
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 |