CN102406997B - One-way valve - Google Patents
One-way valve Download PDFInfo
- Publication number
- CN102406997B CN102406997B CN 201110328785 CN201110328785A CN102406997B CN 102406997 B CN102406997 B CN 102406997B CN 201110328785 CN201110328785 CN 201110328785 CN 201110328785 A CN201110328785 A CN 201110328785A CN 102406997 B CN102406997 B CN 102406997B
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- valve body
- pressure cap
- nut
- check valve
- valve
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Abstract
The invention discloses a one-way valve which comprises a valve body (1), a piston (2) and a pressing cap (3), wherein the piston (2) is arranged at the inner cavity of the valve body (1); one end of the valve body (1) is provided with an air inlet (4); one end of the pressing cap (3) is provided with an air outlet (5); and the valve body (1) and the pressing cap (3) are provided with an adjusting mechanism capable of adjusting the height of the one-way valve. The one-way valve has a length within a certain range to ensure that the valve can be normally mounted between two pipelines and the material cost and installation cost can be reduced.
Description
Technical field
The present invention relates to the valve technology field, specifically is a kind of check valve for the fire fighting gas fire extinguishing system.
Background technology
The check valve that is used at present the fire fighting gas fire extinguishing system is the visual plant of the long-range conveying of control fire-fighting fire extinguishing gas.The check valve of prior art comprises valve body, piston and pressure cap, and described piston is located at the inner chamber of valve body, and described pressure cap and valve body screw, and an end of described valve body is provided with air inlet, and an end of described pressure cap is provided with the gas outlet.There is following shortcoming in the check valve of above structure: because the two ends of check valve all are connected with pipeline, the occasion of having determined at some length of pipe, and the height of check valve has been determined, this just causes and can't install, if again change pipeline, material cost and installation cost have been increased; As again changing other check valve, this also can't guarantee to wait obtain can just and two pipelines between apart from the check valve of equal height, causing can't normal mounting.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of check valve that can guarantee normal mounting in the certain-length scope between two pipelines and can reduce material cost and installation cost is provided.
Technical scheme of the present invention is, a kind of check valve with following structure is provided, comprise valve body, piston and pressure cap, described piston is located at the inner chamber of valve body, one end of described valve body is provided with air inlet, one end of described pressure cap is provided with the gas outlet, also is provided with the adjustment structure that can adjust the check valve height between described valve body and the pressure cap.
Described adjustment structure refers to, described pressure cap is socketed on the valve body, be combined with locking nut on the external screw thread of described valve body, the end face of described locking nut and pressure cap offsets, and circumferentially fixing with many pieces of bolts, the internal thread hole of described valve body has screwed nut, described nut and valve seal, described nut and pressure cap sealing.
Described nut and valve seal refer to, are provided with sealing ring between described nut and the valve body.
Described nut and pressure cap sealing refer to, are provided with sealing ring between described nut and the pressure cap.
After adopting said structure, check valve of the present invention compared with prior art, have the following advantages: owing to also being provided with the adjustment structure that to adjust the check valve height between described valve body and the pressure cap, within the specific limits, just can change the height of check valve by the rotation pressure cap, and pressure cap is flexible up and down, effect by the seal on the nut, all can guarantee the sealing of the internal channel of check valve, like this in the certain-length scope, can guarantee normal mounting between two pipelines, avoid again changing pipeline or check valve, can reduce material cost and installation cost.
Description of drawings
Accompanying drawing is the cross-sectional view of check valve of the present invention.
Shown in the figure, 1, valve body, 2, piston, 3, pressure cap, 4, air inlet, 5, the gas outlet, 6, nut, 7, locking nut.
The specific embodiment
Below in conjunction with accompanying drawing check valve of the present invention is described further.
As shown in the figure, check valve of the present invention comprises valve body 1, piston 2 and pressure cap 3, described piston 2 is located at the inner chamber of valve body 1, one end of described valve body 1 is provided with air inlet 4, and an end of described pressure cap 3 is provided with gas outlet 5, also is provided with the adjustment structure that can adjust the check valve height on described valve body 1 and the pressure cap 3.
Described adjustment structure refers to, described pressure cap 3 is socketed on the valve body 1, be combined with locking nut 7 on the external screw thread of described valve body 1, described locking nut 7 offsets with the end face of pressure cap 3, and circumferentially fixing with many pieces of bolts, the internal thread hole of described valve body 1 has screwed nut 6, and the boss external diameter of this nut 6 is greater than the external diameter of valve body 1, described nut 6 and valve body 1 sealing, described nut 6 and pressure cap 3 sealings.
Described nut 6 refers to valve body 1 sealing, is provided with sealing ring between described nut 6 and the valve body 1.
Described nut 6 refers to pressure cap 3 sealings, is provided with sealing ring between described nut 6 and the pressure cap 3.
The concrete installation of check valve of the present invention: piston 2 is inserted in the inner chamber of valve body 1, and the seal that embeds its end face is pressed on the outstanding boss in place, piston 2 air inlet planes, seal, seal then compacted screw in compression on the end face of piston; Nut 6 usefulness screw threads are combined in the inner chamber of valve body and are fixing, and the inner chamber of pressure cap 3 is inserted in the cylindrical of nut 6; Locking nut 7 screws the cylindrical place at valve body 1, connects pressure cap 3 with many pieces of screws, plays fixedly pressure cap 3, has formed like this an adjusting device, regulates the height that pressure cap 2 just can be regulated whole check valve.
This check valve is installed in the pipeline, relies on flowing of medium itself, prevents that medium from flowing backwards, namely can only one way flow.When the restriction that is subject to the installation site or when needing, the height of capable of regulating valve body, its concrete steps are: inside turn pressure cap 2 is the height that shortens check valve, and outwards turn pressure cap 2 is the height that increases check valve.
Claims (3)
1. check valve, comprise valve body (1), piston (2) and pressure cap (3), described piston (2) is located at the inner chamber of valve body (1), one end of described valve body (1) is provided with air inlet (4), one end of described pressure cap (3) is provided with gas outlet (5), it is characterized in that: also be provided with the adjustment structure that can adjust the check valve height on described valve body (1) and the pressure cap (3); Described adjustment structure refers to, described pressure cap (3) is socketed on the valve body (1), be combined with locking nut (7) on the external screw thread of described valve body (1), described locking nut (7) offsets with the end face of pressure cap (3), and circumferentially fixing with many pieces of bolts, the internal thread hole of described valve body (1) has screwed nut (6); Described nut (6) and valve body (1) sealing, described nut (6) and pressure cap (3) sealing.
2. check valve according to claim 1 is characterized in that: described nut (6) refers to valve body (1) sealing, is provided with sealing ring between described nut (6) and the valve body (1).
3. check valve according to claim 1 is characterized in that: described nut (6) refers to pressure cap (3) sealing, is provided with sealing ring between described nut (6) and the pressure cap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110328785 CN102406997B (en) | 2011-10-26 | 2011-10-26 | One-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110328785 CN102406997B (en) | 2011-10-26 | 2011-10-26 | One-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102406997A CN102406997A (en) | 2012-04-11 |
| CN102406997B true CN102406997B (en) | 2013-09-18 |
Family
ID=45909527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110328785 Active CN102406997B (en) | 2011-10-26 | 2011-10-26 | One-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102406997B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004014377A1 (en) * | 2004-03-17 | 2005-10-06 | Hydac Filtertechnik Gmbh | check valve |
| JP5061643B2 (en) * | 2007-02-23 | 2012-10-31 | 東ソー株式会社 | Improved check valve |
| CN202289281U (en) * | 2011-10-26 | 2012-07-04 | 宁波三安制阀有限公司 | Check valve |
-
2011
- 2011-10-26 CN CN 201110328785 patent/CN102406997B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102406997A (en) | 2012-04-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |