CN202790713U - Noise elimination check valve - Google Patents
Noise elimination check valve Download PDFInfo
- Publication number
- CN202790713U CN202790713U CN 201220458160 CN201220458160U CN202790713U CN 202790713 U CN202790713 U CN 202790713U CN 201220458160 CN201220458160 CN 201220458160 CN 201220458160 U CN201220458160 U CN 201220458160U CN 202790713 U CN202790713 U CN 202790713U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- guide sleeve
- flap
- check valve
- 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 noise elimination check valve. The noise elimination check valve comprises a valve body, a valve clack, a spring and a guide frame, and is characterized in that a middle cavity of the valve body adopts a self sealing device, wherein the self sealing device is composed of a valve cover, a steel loop, fixed plates, bolts and a sealing ring; the valve cover and the inner hole wall of the middle cavity of the valve body are provided with positive cone faces which are matched with each other; the sealing ring is installed on an outer cone face of the valve cover; the steel loop is embedded in a groove in the inner hole wall of the middle cavity of the valve body at the upper side of the valve cover; the fixed plate is pressed on the upper end face of the steel loop; the bolts pass through installing holes of the fixed plates to be fixedly connected with the valve cover by threads; and a teflon protecting cushion is embedded in the radial end face of the guide frame, facing the back of the valve clack. The valve can be replaced and maintained on line, and all internal components can be replaced on line; the teflon protecting cushion is embedded in the end face of the guide frame, so that the sound generated by collision between the valve clack and the guide frame when the valve clack is opened is eliminated, and the noise elimination check valve has the advantages of convenience in maintenance and replacement, small opening and closing noise, long service life and the like; and the noise elimination check valve belongs to a protection valve for preventing medium backflowing in a pump outlet pipe.
Description
Technical field
The utility model relates to valve field, particularly about a kind of safety check.The utility model is applicable to the protection valve that the pump discharge pipeline prevents medium back flow.
Background technique
On the exit of pump pipeline, when quitting work, water pump damages water pump in order to prevent that medium from flowing backwards, generally at exit of pump safety check is installed, the structural type of the safety check that existing exit of pump pipeline uses is a lot, a kind of structural type that its medi-spring direct press type safety check more generally uses, its structure is by valve body, flap, spring, leading truck forms, be shaped with the valve seat that cooperatively interacts with flap in the valve channel, leading truck is fixedly mounted in the middle of the valve channel, spring fitting is between the flap back side and leading truck end face, the pilot hole at the axis of guide at the flap back side and leading truck center movingly, its inner flow passage adopts airflow design, has simple in structure, the pressure loss is little, it is very short that flap opens and closes stroke, prevents water hammer, the quiet characteristics such as close.Its shortcoming is that to open noise very large, and it is just replaceable to pull down whole deck valve door after valve seat insert is aging, and maintenance trouble, working life are short.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, but provides a kind of on-line maintenance to change open-shut device, open and close that noise is little, the damping check valve of long service life.
The technical solution of the utility model comprises valve body, flap, spring, leading truck, mainly be that the valve body lumen adopts self-seal device, this self-seal device is by valve gap, steel loop, fixed plate, bolt and seal ring form, valve gap and valve body lumen inner hole wall have the positive conical surface that cooperatively interacts, seal ring is installed in the valve gap male cone (strobilus masculinus), steel loop is inlaid in the groove made on the valve body lumen inner hole wall of valve gap upside, fixed plate is fitted on the steel loop upper-end surface, the mounting hole that bolt passes fixed plate is fixedly connected with the valve gap screw thread, at leading truck insert teflon protection pad in the radial end face at the flap back side.
In above technological scheme, leading truck is comprised of outer guide sleeve and interior guide sleeve, one end of outer guide sleeve is fixedly mounted on the interior fixing frame of valve body, the inner round wall of the other end is connected movingly with the cylindrical wall of flap, interior guide sleeve is fixedly mounted on the outer guide sleeve inwall by connecting tendon, its pilot hole is connected movingly with the axis of guide at center, the flap back side, mounting spring between the convex shoulder on the flap back side and the interior guide sleeve periphery, between outer guide sleeve and interior guide sleeve, have the runner with the valve outlet channel connection, have streamline channel between the cylindrical wall of outer guide sleeve and the valve interior wall.
In above technological scheme, the upper and lower side of outer guide sleeve is fixedly mounted on valve gap and the valve body by screw respectively.
In above technological scheme, the valve channel inner chamber is provided with the teflon valve seat, and flap adopts the spherical seal surface structure.
The utility model beneficial effect compared with prior art is that the valve body lumen adopts self sealing structure, make valve can realize online the replacing and maintenance, all internals all can be changed online, insert teflon protection pad in the leading truck end face, when eliminating flap and opening with the collision sound of leading truck, convenient maintenance and replacement, little, the long service life of keying noise.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Damping check valve as shown in Figure 1, comprise valve body 1, flap 6, spring 8, leading truck 10, valve body 1 lumen adopts self-seal device, this self-seal device is by valve gap 2, steel loop 3, fixed plate 4, bolt and seal ring form, valve gap 2 has the positive conical surface that cooperatively interacts with valve body 1 lumen inner hole wall, seal ring is installed in valve gap 2 male cone (strobilus masculinus)s, steel loop 3 is inlaid in the groove made on the valve body 1 lumen inner hole wall of valve gap 2 upsides, fixed plate 4 is fitted on steel loop 3 upper-end surfaces, the mounting hole that bolt passes fixed plate 4 is fixedly connected with valve gap 2 screw threads, under the pressure medium effect, valve gap 2 is subjected to thrust upwards, make the inner conical surface wedging of valve gap 2 male cone (strobilus masculinus)s and valve body 1 lumen inner hole wall, realize self-tightening sealing.At leading truck 10 insert teflon protection pad 9 in the radial end face at flap 6 back sides.
Leading truck 10 is comprised of outer guide sleeve and interior guide sleeve, one end of outer guide sleeve is fixedly mounted on the fixing frame in the valve body 1, the inner round wall of the other end is connected movingly with the cylindrical wall of flap 6, interior guide sleeve is fixedly mounted on the outer guide sleeve inwall by connecting tendon, its center is shaped with pilot hole, this pilot hole is connected movingly with the axis of guide at center, flap 6 back side, mounting spring 8 between the convex shoulder on flap 6 back sides and the interior guide sleeve periphery, between outer guide sleeve and interior guide sleeve, have the runner that is communicated with valve body 1 outlet passage, have streamline channel between the cylindrical wall of outer guide sleeve and valve body 1 inwall.The upper and lower side of outer guide sleeve is fixedly mounted on valve gap 2 and the valve body 1 by screw respectively.
Valve body 1 channel lumen is provided with teflon valve seat 5, and flap 6 adopts the spherical seal surface structure, realizes ball rolling fitted seal with valve seat 5 sealing surfaces, good seal performance, and friction is few, long service life.
Claims (4)
1. damping check valve, comprise valve body (1), flap (6), spring (8), leading truck (10), it is characterized in that valve body (1) lumen adopts self-seal device, this self-seal device is by valve gap (2), steel loop (3), fixed plate (4), bolt and seal ring form, valve gap (2) has the positive conical surface that cooperatively interacts with valve body (1) lumen inner hole wall, seal ring is installed in valve gap (2) male cone (strobilus masculinus), steel loop (3) is inlaid in the groove made on valve body (1) the lumen inner hole wall of valve gap (2) upside, fixed plate (4) is fitted on steel loop (3) upper-end surface, the mounting hole that bolt passes fixed plate (4) is fixedly connected with valve gap (2) screw thread, at leading truck (10) insert teflon protection pad (9) in the radial end face at flap (6) back side.
2. damping check valve according to claim 1, it is characterized in that leading truck (10) is comprised of outer guide sleeve and interior guide sleeve, one end of outer guide sleeve is fixedly mounted on the interior fixing frame of valve body (1), the inner round wall of the other end is connected movingly with the cylindrical wall of flap (6), interior guide sleeve is fixedly mounted on the outer guide sleeve inwall by connecting tendon, its pilot hole is connected movingly with the axis of guide at flap (6) center, the back side, mounting spring (8) between the convex shoulder on flap (6) back side and the interior guide sleeve periphery, between outer guide sleeve and interior guide sleeve, have the runner that is communicated with valve body (1) outlet passage, have streamline channel between the cylindrical wall of outer guide sleeve and valve body (1) inwall.
3. damping check valve according to claim 2 is characterized in that the upper and lower side of outer guide sleeve is fixedly mounted on valve gap (2) and the valve body (1) by screw respectively.
4. damping check valve according to claim 1 and 2 is characterized in that valve body (1) channel lumen is provided with teflon valve seat (5), and flap (6) adopts the spherical seal surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458160 CN202790713U (en) | 2012-09-08 | 2012-09-08 | Noise elimination check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458160 CN202790713U (en) | 2012-09-08 | 2012-09-08 | Noise elimination check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790713U true CN202790713U (en) | 2013-03-13 |
Family
ID=47817977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220458160 Expired - Fee Related CN202790713U (en) | 2012-09-08 | 2012-09-08 | Noise elimination check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790713U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234067A (en) * | 2013-05-10 | 2013-08-07 | 四川宏华石油设备有限公司 | One-way valve for down-hole tool |
| CN105626911A (en) * | 2014-11-02 | 2016-06-01 | 杨恒 | Upper-portion-mounted axial flow check valve |
| CN106838386A (en) * | 2017-03-06 | 2017-06-13 | 合肥通用机械研究院 | It is a kind of can on-line maintenance axial flow type check valve |
| CN110753813A (en) * | 2017-06-13 | 2020-02-04 | 邦达研发中心 | Axial fluid nozzle with exhaust valve |
-
2012
- 2012-09-08 CN CN 201220458160 patent/CN202790713U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234067A (en) * | 2013-05-10 | 2013-08-07 | 四川宏华石油设备有限公司 | One-way valve for down-hole tool |
| CN103234067B (en) * | 2013-05-10 | 2015-11-11 | 四川宏华石油设备有限公司 | A kind of one-way valve for downhole tool |
| CN105626911A (en) * | 2014-11-02 | 2016-06-01 | 杨恒 | Upper-portion-mounted axial flow check valve |
| CN105626911B (en) * | 2014-11-02 | 2018-08-28 | 杨恒 | Profile shaft flow check valve is filled in one kind |
| CN106838386A (en) * | 2017-03-06 | 2017-06-13 | 合肥通用机械研究院 | It is a kind of can on-line maintenance axial flow type check valve |
| CN106838386B (en) * | 2017-03-06 | 2019-10-29 | 合肥通用机械研究院 | It is a kind of can on-line maintenance axial flow type check valve |
| CN110753813A (en) * | 2017-06-13 | 2020-02-04 | 邦达研发中心 | Axial fluid nozzle with exhaust valve |
| CN110753813B (en) * | 2017-06-13 | 2021-12-10 | 邦达研发中心 | Axial fluid nozzle with exhaust valve |
| US11473484B2 (en) | 2017-06-13 | 2022-10-18 | Bontaz Centre R & D | Axial fluid spray nozzle with vent valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20200908 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |