CN2485492Y - Self sucking or little pressure check valve - Google Patents
Self sucking or little pressure check valve Download PDFInfo
- Publication number
- CN2485492Y CN2485492Y CN 01206517 CN01206517U CN2485492Y CN 2485492 Y CN2485492 Y CN 2485492Y CN 01206517 CN01206517 CN 01206517 CN 01206517 U CN01206517 U CN 01206517U CN 2485492 Y CN2485492 Y CN 2485492Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- guide rod
- sealing
- air chamber
- 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 self sucking or little pressure check valve, which is characterized in that the upper end of a leader 5 is connected with a valve piece to form an umbrella type; a stainless steel bush 9 with double conical face is arranged at the center hole of a valve seat 10 where the valve seat contacts with the leader; a seal ring 6 is arranged at the position of the upper part of the valve seat where the upper part of the valve contacts with the valve piece, or a ring blade structure is arranged to form a line contact seal with the valve piece; the lower end of the leader is provided with a cuspate angle; and a nut 11 is arranged on the leader. The utility model has the advantages of simple structure and wide using scope. The actual needed flow by the valve can be controlled and adjusted automatically without using of mechanism or electromotion. The valve can be turned on and off by magnifying the acting force from the slight differential pressure. The utility is suitable for being used in the facilities, pipes or systems with a working status of little pressure and a medium of gas but without leaking of combustible, explosive and deleterious gas.
Description
The utility model relates to one-way valve, particularly a kind of self-priming or minute-pressure formula one-way valve that uses in the industry water gas delivery process that be applicable to.
The structure of the one-way valve of available technology adopting mainly is the outlet cone structure, the steel ball float that is connected with spring is arranged in it, just back down valve when suction pressure overcomes spring force, ball float returning position during end-of-job is by ball float and cone linear sealing throttle down.This one-way valve is not suitable for the minute-pressure state, and exists sealing defective such as unreliable.
The purpose of this utility model provide a kind of need be by machinery or electronic mode, and by amplifying the principle opening/shutting valve of small differential pressure action power, realize not having and leak self-priming or the minute-pressure formula one-way valve of regulating required flow automatically.
The purpose of this utility model is to realize by such technological scheme, be a kind of self-priming or minute-pressure formula, one-way valve, comprise air chamber, valve seat, valve block and guide rod, it is characterized in that: the guide rod upper end is fixedly connected into umbrella shape with valve block and is being connected or the contacting point sealing, and the central hole that valve seat contacts with guide rod has press-fited a stainless steel bipyramid face lining; The bottom of valve seat evenly has some inlet holes; Valve seat top is being equipped with O-ring seal with the valve block contact position, or is that ring-type cutting edge formula structure and valve block constitute line contact sealing.
Said structure of the present utility model can further specify by the embodiment that accompanying drawing provides.
The utility model has following accompanying drawing:
Accompanying drawing 1 is the utility model embodiment 1 a cross-sectional view;
Accompanying drawing 2 is the utility model embodiment 2 a cross-sectional view;
Accompanying drawing 3 is the utility model embodiment 3 a cross-sectional view;
Accompanying drawing 4 is the utility model embodiment 4 a cross-sectional view;
Accompanying drawing 5 is the utility model embodiment 5 a cross-sectional view;
Accompanying drawing 6 is the utility model embodiment 6 a cross-sectional view;
Accompanying drawing 7 is the utility model embodiment 7 a cross-sectional view;
Accompanying drawing 8 is the utility model embodiment 8 a cross-sectional view.
Referring to accompanying drawing: self-priming among the figure or minute-pressure formula one-way valve, comprise air chamber 1, valve seat 10, valve block 4 and guide rod 5, it is characterized in that: the guide rod upper end is fixedly connected into umbrella shape with valve block and is being connected or the contacting point sealing, and the central hole that valve seat 10 contacts with guide rod 5 has press-fited a stainless steel bipyramid face lining 9; The bottom of valve body evenly has some inlet holes; Valve seat top is being equipped with O-ring seal 6 with the valve block contact position, or is that ring-type cutting edge formula structure and valve block constitute line contact sealing.The lower end of described guide rod 5 is a wedge angle, and nut 11 is installed on the guide rod.
In the embodiment that accompanying drawing 1,5 provides, valve seat 10 passes through bolt with air chamber 1, and by being installed in the seal ring 7a sealing on the valve seat.
Referring to accompanying drawing 2,6, among the embodiment who provides in the drawings, valve seat 10 is connected by bolt with flange on the air chamber; And between the two by gasket seal 7b sealing.
Referring to accompanying drawing 3,7, among the embodiment who provides in the drawings, valve seat is connected by bolt flange with air chamber 1 and suction tude 8 respectively up and down; And connecting end face by gasket seal 7b sealing.
Referring to accompanying drawing 4,8, one-way valve is a horizontal type structure among the embodiment that accompanying drawing provides, and promptly is connected by bolt flange with air chamber 1 and suction tude 8 respectively about valve seat; And connecting end face by gasket seal 7b sealing; At suction tude 8 one ends, spring seat 3 is installed on the guide rod 5, by it spring 2 is withstood on valve seat 10 or the lining 9, make one-way valve not have the out-of-date normally off that is in of air communication.
In the embodiment that accompanying drawing 1--accompanying drawing 4 provides, valve seat 10 tops are all adopting the mode that O-ring seal 6 is installed to seal with valve block 4 contact position; In the embodiment that accompanying drawing 5--accompanying drawing 8 provides, valve seat 10 tops are that ring-type cutting edge formula structure and valve block 4 constitute line contact sealing.
In said structure, valve seat 10 can adopt carbon steel as material, and valve block 4 materials can adopt nylon 66 lightweight materials such as grade or the lighter metallic material such as aluminum alloy of proportion; Guide rod 5 materials can adopt teflon etc. to have the lightweight material of certain intensity and rigidity
The working principle of said structure of the present utility model is: when starting working, when the air chamber internal pressure is decreased to normal pressure following (or less than air chamber pressure outside), the inside and outside pressure reduction of air chamber makes and produces positive pressure (buoyancy) upwards on the valve block, be small differential pressure action in as calculated the buoyancy that produces on the larger area valve block, make on the valve block and lift, valve opening, air-flow enters air chamber; In the working procedure, the valve block rising height changes increase and decrease automatically by pressure reduction, regulates flow; End-of-job, the air chamber internal pressure rises, gradually with the external pressure balance, valve block falls by deadweight, and the air chamber internal pressure continues to raise, and the downward positive pressure that valve block is subjected to increases, promptly produce to inferior great force in the larger area valve block with preceding opposite differential pressure action, O-ring seal (or valve block face seal) is crushed out of shape, and air chamber is air inlet no longer, does not also have any reverse leakage.When one-way valve is horizontal type structure, because spring seat 3 and spring 2 are installed, substitute the valve block deadweight by spring force on guide rod 5, equally also can realize air inlet is carried out the effect of unidirectional keying automatically.
The utility model carries out Performance Detection by the venturi air mixing machine to it, proves that one-way valve opens and closes and not have at all leakage flexibly, in off position; Valve seat is connected with air chamber ways of connecting, employing flange, and mounting or dismounting are convenient, is convenient to maintenance and changes easily damaged parts; Can simply by the quantity of plus-minus guide rod upper cap nut, regulate the Lift of valve block and control air inflow, but the method not be suitable for the one-way valve of horizontal type structure according to the difference of working pressure.
The utility model is owing to the advantage that described structure has is: simple in structure, do not need by machinery Or electric auto-control mode and reach the actual required flow of automatic adjusting, open by amplifying small differential pressure active force Close valve, and the valve mode adopts soft valve, reaching does not have the requirement of leakage fully. The utility model is used model Enclose extensively, be specially adapted under the work of minute-pressure state, working media is gas, requires the inflammable of no leakage rate In equipment, pipeline or the system of explosive and pernicious gas, such as the mixed gas of injection type liquefied petroleum gas and air Machine etc.
Claims (5)
1, a kind of self-priming or minute-pressure formula one-way valve, comprise air chamber (1), valve seat (10), valve block (4) and guide rod (5), it is characterized in that: the guide rod upper end is fixedly connected into umbrella shape with valve block and is being connected or the contacting point sealing, and the central hole that valve seat (10) contacts with guide rod (5) has press-fited a stainless steel bipyramid face lining (9); The bottom of valve seat evenly has some inlet holes; Valve seat top is being equipped with O-ring seal (6) with the valve block contact position, or is that ring-type cutting edge formula structure and valve block constitute line contact sealing.The lower end of described guide rod (5) is a wedge angle, and nut (11) is installed on the guide rod.
2, according to claims 1 described self-priming or minute-pressure formula one-way valve, it is characterized in that: valve seat (10) passes through bolt with air chamber (1), and by being installed in seal ring (7a) sealing on the valve seat.
3, according to claims 1 described self-priming or minute-pressure formula one-way valve, it is characterized in that: valve seat (10) is connected by bolt with flange on the air chamber; And between the two by gasket seal (7b) sealing.
4, according to claims 1 described self-priming or minute-pressure formula one-way valve, it is characterized in that: valve seat is connected by bolt flange with air chamber (1) and suction tude (8) respectively up and down; And connecting end face by gasket seal (7b) sealing.
5, according to claims 1 described self-priming or minute-pressure formula one-way valve, it is characterized in that: one-way valve is a horizontal type structure, promptly is connected by bolt flange with air chamber (1) and suction tude (8) respectively about valve seat; And connecting end face by gasket seal (7b) sealing; At suction tude (8) one ends, spring seat (3) is installed on the guide rod (5), by it spring (2) is withstood on valve seat (10) or the lining (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01206517 CN2485492Y (en) | 2001-06-07 | 2001-06-07 | Self sucking or little pressure check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01206517 CN2485492Y (en) | 2001-06-07 | 2001-06-07 | Self sucking or little pressure check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2485492Y true CN2485492Y (en) | 2002-04-10 |
Family
ID=33627135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01206517 Expired - Fee Related CN2485492Y (en) | 2001-06-07 | 2001-06-07 | Self sucking or little pressure check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2485492Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578758A (en) * | 2020-05-28 | 2020-08-25 | 江阴弘旭环保电力科技有限公司 | High-safety heat source collecting system for low-temperature waste heat power generation system |
| CN115351873A (en) * | 2022-09-13 | 2022-11-18 | 河南工程学院 | Hopper type 3D printing device and 3D printing method for cement-based materials |
-
2001
- 2001-06-07 CN CN 01206517 patent/CN2485492Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578758A (en) * | 2020-05-28 | 2020-08-25 | 江阴弘旭环保电力科技有限公司 | High-safety heat source collecting system for low-temperature waste heat power generation system |
| CN115351873A (en) * | 2022-09-13 | 2022-11-18 | 河南工程学院 | Hopper type 3D printing device and 3D printing method for cement-based materials |
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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 |