CN2192780Y - Extension tube check valve - Google Patents
Extension tube check valve Download PDFInfo
- Publication number
- CN2192780Y CN2192780Y CN 94213328 CN94213328U CN2192780Y CN 2192780 Y CN2192780 Y CN 2192780Y CN 94213328 CN94213328 CN 94213328 CN 94213328 U CN94213328 U CN 94213328U CN 2192780 Y CN2192780 Y CN 2192780Y
- Authority
- CN
- China
- Prior art keywords
- spool
- extension tube
- check valve
- valve
- tube check
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000006837 decompression Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 26
- 230000009514 concussion Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model relates to an extension tube check valve. A valve core is an inner flow channel type which is cylindrical basket shape. An overflowing hole is opened on the cylinder wall of the valve core. An automatic pressure relief device which comprises a cylindrical type housing, an adjusting screw, a sealing plug, a screw-plug and a spring which is arranged between a spring seat in the housing and the sealing plug is arranged in the valve core. An inner ring which is at the lower part of the valve body is slip connection with a flange. The extension tube check valve has simple structure and low cost. The weight and the volume of the extension tube check valve are half as large as other check valves. The extension tube check valve can reduce the concussion of a water hammer, debase noise, realize normal water-supply and solve the electricity, and the extension tube check valve can be conveniently removed, unloaded and maintained. The extension tube check valve is an automatic valve applied for preventing flowing backwards in the water supply system or other pipelines of liquor and air.
Description
The utility model belongs to and prevents a kind of automatic valve of flowing backwards in a kind of water system or other liquid, the air pipe.
Existing safety check generally is made up of valve body, sealing gasket, spool, the spacing pad of sealing and flange plate, the shape of spool is plate shaped outer flow passage formula, when pump head hour because sealing surface is greater than water entering surface in the safety check, the spool upward pressure is greater than downforce, at this moment the ascending water sealing hydraulic pressure that bears down on one not open during starting of pump station, cause spool not opened, water pump is dried to change not water outlet, can not normal water supply, can only lean on expanded motor power, improve lift and realize normal water supply.In addition, existing safety check is not adjusted surplus after fixing in pipeline, and disassemble or assemble and maintenance are very difficult.
The purpose of this utility model provides a kind of flexible cartridge type safety check, can make the water pump still can normal water supply under less pressure, and makes things convenient for its disassemble or assemble and maintenance.
The utility model cartridge type safety check that stretches, comprise valve body, sealing gasket, spool, the spacing pad of sealing and flange plate, it is characterized in that: spool is a tubular gaily decorated basket shape inner flow passage formula, have flowing hole on the spool barrel, be provided with automatic decompression device in the spool, automatic decompression device is made up of cartridge type housing, adjusting screw rod, sealing plug, plug, the spring and the adjusting screw rod that are located between an inner spring seat and the sealing plug, have relief hole on the wall of cartridge type housing limit, be provided with sealing gasket between sealing plug and the cartridge type housing;
Valve body lower portion inner ring and flange plate are slidingly connected, and are provided with seal ring therebetween.
Be provided with sealing gasket between sealing plug and the cartridge type housing.
The length of spool is greater than the diameter of spool.
When water pump supplied water, hydraulic action backed down spool below spool, and current enter valve body, entered inner chamber by the spool flowing hole, entered pipeline again and realized supplying water; Shut down when water pump, lose rising hydraulic pressure in the pipeline, and highly form static pressure by supplying water, act on immediately spool above, spool is back into sealing station by lifting position, water, gas or other liquid can not be refluxed.When the water pump normal water supply, automatic decompression device is closed, and after termination of pumping, sealing plug is open, and water is released, and the pressure above the spool descends, and makes water pump be easy to starting.The adjusting screw rod of automatic decompression device regulates in advance, utilizes the adjusting of length of spring compressed ratio, and the cracking pressure of control sealing plug makes pressure on the spool always less than the breakout pressure of water pump, can improve the height that supplies water under the situation of expanded motor power not.
Tubular inner flow passage formula spool of the present utility model, steering capability is good, when level is installed, no stuck phenomenon.Automatic decompression device in the spool reduces impact of water hammer on the one hand, reduces noise; On the other hand can be and supply water and highly to regulate static pressure above the check valve spool according to pump head, make water pump be easy to back down spool and realize normal water supply, need not increase the motor power consumption; Valve body and flange plate are designed to telescopic, make to install and keep in repair more convenient, and axial stretching and radial missing are all had regulating action.
Below in conjunction with drawings and Examples the utility model is described in detail:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of automatic decompression device.
As shown in the figure, flexible cartridge type safety check, comprise valve body 1, sealing gasket 2, spool 3, the spacing pad 4 of sealing and flange plate 7, spool 3 is tubular gaily decorated basket shape inner flow passage formulas, the length of spool is greater than the diameter of 1～1.7 times of spool, have flowing hole 15 on the spool barrel, be provided with automatic decompression device 5 in the spool; Automatic decompression device 5 is made up of cartridge type housing 8, adjusting screw rod 14, sealing plug 9, plug 10, the spring 13 that is located between an inner spring seat 11 and the sealing plug 9, is provided with sealing gasket 12 between sealing plug 9 and the housing 8; Valve body 1 bottom inner ring and flange plate 7 are slidingly connected, and are provided with arc surface soft seal circle 6 therebetween, can telescopic adjustment when disassemble or assemble.
Claims (2)
1, a kind of flexible cartridge type safety check, comprise valve body, sealing gasket, spool, the spacing pad of sealing and flange plate, it is characterized in that: spool is a tubular gaily decorated basket shape inner flow passage formula, have flowing hole on the spool barrel, be provided with automatic decompression device in the spool, automatic decompression device is made up of cartridge type housing, adjusting screw rod, sealing plug, plug, the spring that is located between an inner spring seat and the sealing plug, has relief hole on the wall of cartridge type housing limit, is provided with sealing gasket between sealing plug and the cartridge type housing;
Valve body lower portion inner ring and flange plate are slidingly connected, and are provided with seal ring therebetween.
2, flexible cartridge type safety check according to claim 1, it is characterized in that: the length of described spool is greater than the diameter of spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94213328 CN2192780Y (en) | 1994-06-13 | 1994-06-13 | Extension tube check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94213328 CN2192780Y (en) | 1994-06-13 | 1994-06-13 | Extension tube check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2192780Y true CN2192780Y (en) | 1995-03-22 |
Family
ID=33829919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94213328 Expired - Fee Related CN2192780Y (en) | 1994-06-13 | 1994-06-13 | Extension tube check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2192780Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335831C (en) * | 2004-03-25 | 2007-09-05 | 吴云铎 | Antitheft monoflow valve |
| CN100402904C (en) * | 2004-07-05 | 2008-07-16 | 广东正力精密机械有限公司 | Two-position two-way pneumatic control valve |
| CN100408898C (en) * | 2001-10-02 | 2008-08-06 | 海如弗洛控股有限公司 | A check valve |
| CN100516606C (en) * | 2004-09-28 | 2009-07-22 | Cla-Val公司 | Anti-cavitation valve assembly |
| CN106514157A (en) * | 2016-12-24 | 2017-03-22 | 杭州耐准精密机械有限公司 | Turn buckle and machining technology thereof |
| CN109307089A (en) * | 2018-10-22 | 2019-02-05 | 合肥通用机械研究院有限公司 | High frequency opens check-valves fastly |
-
1994
- 1994-06-13 CN CN 94213328 patent/CN2192780Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408898C (en) * | 2001-10-02 | 2008-08-06 | 海如弗洛控股有限公司 | A check valve |
| CN100335831C (en) * | 2004-03-25 | 2007-09-05 | 吴云铎 | Antitheft monoflow valve |
| CN100402904C (en) * | 2004-07-05 | 2008-07-16 | 广东正力精密机械有限公司 | Two-position two-way pneumatic control valve |
| CN100516606C (en) * | 2004-09-28 | 2009-07-22 | Cla-Val公司 | Anti-cavitation valve assembly |
| CN106514157A (en) * | 2016-12-24 | 2017-03-22 | 杭州耐准精密机械有限公司 | Turn buckle and machining technology thereof |
| CN109307089A (en) * | 2018-10-22 | 2019-02-05 | 合肥通用机械研究院有限公司 | High frequency opens check-valves fastly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: HUIPU ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT CO., HAIDIAN DISTRICT, BEIJING TO: LI DEQUAN; GAO YANCHAO |
|
| CP03 | Change of name, title or address |
Address after: No. 52, Yongding Road, Beijing, Haidian District Patentee after: Li Dequan Patentee after: Gao Yanchao Address before: No. 83, Yongding Road, Beijing, Haidian District Patentee before: Puhui Electromechanical Technology Devetopment Co., Haidian District, Beijing |
|
| 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 |