CN2520442Y - Single-flow check valve with double-layer valve core - Google Patents
Single-flow check valve with double-layer valve core Download PDFInfo
- Publication number
- CN2520442Y CN2520442Y CN 01276666 CN01276666U CN2520442Y CN 2520442 Y CN2520442 Y CN 2520442Y CN 01276666 CN01276666 CN 01276666 CN 01276666 U CN01276666 U CN 01276666U CN 2520442 Y CN2520442 Y CN 2520442Y
- Authority
- CN
- China
- Prior art keywords
- spool
- valve
- double
- valve rod
- deck
- 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 belongs to an improvement of a single-flow check-valve for drainage engineering, in particular to a single-flow check-valve with a double layer spool, which comprises a valve body with a water inlet hole and a water outlet hole, and spools which are mounted on the valve base in the valve body, a double layer spool with a valve rod is engageably arranged on the valve base whose opening takes a conical shape, the valve rod is moveably engaged with a guide tube which is fixedly arranged on the valve rod. The double layer spool is engaged with the conical-shaped valve base, combining and contacting area is large, faying surface engagement is tight, and sealing property is excellent. The structure of the spool guarantees the spool to perpendicularly move from the upper portion to the lower portion, and the spool is led to engage tightly with the valve base, inverse flow of discharge water is effectively prevented.
Description
Technical field: the utility model belongs to the improvement of the single current safety check of water supply and sewage engineering use, particularly has the single current safety check of double-deck spool.
Background technique: at present, there is water leakage phenomenon in the most of bad sealings of using always on many water supply networks of single current safety check.Its main cause is that traditional its internal structure of single current safety check is unreasonable.As cooperating the spool that patty is installed on the valve seat of horizontal lift check valve.When in the pipeline during discharge pressure water, the pressure of water comes from the bottom with spool jack-up, and water flows out by valve seat.When the water in the pipeline did not have pressure, the pressure of safety check discharge water and the deadweight of spool made the non-return valve core return cooperate sealing with valve seat, have prevented the backflow of discharge water.Often because the pressure reduction deadweight smaller or spool of upper and lower water is improper, the seal degree imprecision of spool makes the applying of patty spool and valve seat not tight, causes the backflow of water more or less.
Summary of the invention: the purpose of this utility model is to provide a kind of single current safety check that has double-deck spool, and spool is cooperated with valve seat tightly, and good sealing effect prevents the backflow of transporting water effectively.
The purpose of this utility model is achieved in that a kind of single current safety check that has double-deck spool, comprise the spool of installing on the valve body that has water intake and water outlet and the valve seat in valve body, cooperate the double-deck spool that has valve rod is installed on the valve seat of cone shaped opening, the guide pipe that valve rod and its upper fixed are installed movingly.
Because double-deck spool of the present utility model matches with the valve seat of cone shaped opening, it cooperates the area of contact big, and it is tighter that junction plane cooperates, good seal performance.The guide pipe that the valve rod of spool and its upper fixed are installed is slidingly matched, and has guaranteed the spool vertical up-or-down movement, make that spool combines with valve seat tightly, improved sealing effect.In addition, when the double-deck spool return that has a valve rod cooperates sealing with valve seat, because the deadweight of double-deck spool is moderate, the gravity of the water of the pressure of discharge water and double-deck spool spatial position deadweight in addition, make the spool return cooperate the tighter of sealing with valve seat, prevented the backflow of discharge water effectively.
Description of drawings: Fig. 1 cuts open and shows structural representation for the horizontal single current safety check that has double-deck spool, and Fig. 2 is that the single current safety check that has a double-deck spool cuts open and shows structural representation.
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing, a kind of single current valve last time that has double-deck spool, comprise the spool of installing on the valve body that has water intake and water outlet and the valve seat in valve body, minister formula as shown in Figure 1 has the single current safety check of double-deck spool, the left side of its valve body 2 is a water intake 9, its right side is a water outlet 7, on the valve seat 6 of cone shaped opening, cooperate the double-deck spool 5 that has valve rod 3 is installed, valve rod 3 is the open circles mast, spring 4 is installed in the open circles mast, have at valve body 2 above the valve rod 3 and to fixedly mount the capping 11 that has guide pipe 1 on the opening of flange, hollow cylinder valve rod 3 and guide pipe 1 are fixed on guide pipe 1 interior depression bar 10 and match with spring 4 movingly.The pressure of water has overcome the deadweight of double-deck spool 5 and the pressure of spring 4 in pipeline, and the valve rod 4 of double-deck spool 5 rises along guide pipe 1, and double-deck spool 5 is thrown off with coniform valve base 6, and press water enters pipeline from water outlet 7; When the water in the water intake 9 one side pipe roads does not have pressure or pressure less than the pressure of the deadweight of double-deck spool 5 and spring 4, double-deck spool 5 returns and valve seat 6 closing seams.In the circular groove of every layer of spool end of double-deck spool 5 seal ring 8 is installed respectively, the double-deck spool 5 that seal ring 8 is housed is very good with the effect of valve seat 6 contact seals of tapered opening, and seal ring 8 is made of wear-resisting flexible material.The vertical single current safety check that has double-deck spool as shown in Figure 2, its water intake 9 is arranged on the below of valve body 2, its water outlet 7 is arranged on the top of valve body 2, on the valve seat 6 of valve body 2 inner conical openings, cooperate the double-deck spool 5 that has valve rod 3 is installed, on the inwall of valve body water outlet 7 above the valve rod 3, cooperate the ring support 12 with cross supporting frame is installed, guide pipe 1 in the center fixation of cross supporting frame, the guide pipe 1 that valve rod 3 and its upper fixed are installed is installed with seal ring 8 respectively movingly in the circular groove of every layer of spool end of double-deck spool 5.
Claims (4)
1. single current safety check that has double-deck spool, comprise the spool of installing on the valve body that has water intake and water outlet and the valve seat in valve body, it is characterized in that: go up cooperation at the valve seat (6) of cone shaped opening the double-deck spool (5) that has valve rod (3) is installed, the guide pipe (1) that valve rod (3) and its upper fixed are installed movingly.
2. the single current safety check that has double-deck spool according to claim 1 is characterized in that: in the circular groove of every layer of spool end of double-deck spool (5) seal ring (8) is installed respectively.
3. the single current safety check that has double-deck spool according to claim 1, it is characterized in that: valve rod (3) is the open circles mast, spring (4) is installed in the open circles mast, have at valve rod (3) top valve body (2) on the opening of flange and fixedly mounting the capping (11) that has guide pipe (1), the depression bar (10) that is fixed in the guide pipe (1) matches with spring (4).
4. single current valve last time that has double-deck spool according to claim 1, it is characterized in that: on the inwall of valve rod (3) top valve body (2) water outlet (7), cooperate the ring support (12) with cross supporting frame is installed, guide pipe (1) in the center fixation of cross supporting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276666 CN2520442Y (en) | 2001-12-29 | 2001-12-29 | Single-flow check valve with double-layer valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276666 CN2520442Y (en) | 2001-12-29 | 2001-12-29 | Single-flow check valve with double-layer valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2520442Y true CN2520442Y (en) | 2002-11-13 |
Family
ID=33680697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01276666 Expired - Fee Related CN2520442Y (en) | 2001-12-29 | 2001-12-29 | Single-flow check valve with double-layer valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2520442Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606773A (en) * | 2012-03-08 | 2012-07-25 | 青岛高压阀门有限公司 | Lifting check valve of flange |
| CN103438255A (en) * | 2013-08-31 | 2013-12-11 | 苏州赛斯德工程设备有限公司 | Leakage-proof pressure valve |
| CN104295778A (en) * | 2014-09-12 | 2015-01-21 | 诸文伟 | Natural gas lift check valve |
| CN105299272A (en) * | 2015-11-26 | 2016-02-03 | 天津市国威给排水设备制造有限公司 | Leakage-preventing structure |
| CN109708347A (en) * | 2018-10-12 | 2019-05-03 | 青岛海尔股份有限公司 | The water supply device of ice machine and ice machine and refrigerator with it |
-
2001
- 2001-12-29 CN CN 01276666 patent/CN2520442Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606773A (en) * | 2012-03-08 | 2012-07-25 | 青岛高压阀门有限公司 | Lifting check valve of flange |
| CN103438255A (en) * | 2013-08-31 | 2013-12-11 | 苏州赛斯德工程设备有限公司 | Leakage-proof pressure valve |
| CN103438255B (en) * | 2013-08-31 | 2015-07-15 | 苏州市燃气设备阀门制造有限公司 | Leakage-proof pressure valve |
| CN104295778A (en) * | 2014-09-12 | 2015-01-21 | 诸文伟 | Natural gas lift check valve |
| CN105299272A (en) * | 2015-11-26 | 2016-02-03 | 天津市国威给排水设备制造有限公司 | Leakage-preventing structure |
| CN109708347A (en) * | 2018-10-12 | 2019-05-03 | 青岛海尔股份有限公司 | The water supply device of ice machine and ice machine and refrigerator with it |
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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 |