CN2232101Y - Self-locking type one-way valve - Google Patents
Self-locking type one-way valve Download PDFInfo
- Publication number
- CN2232101Y CN2232101Y CN 95236772 CN95236772U CN2232101Y CN 2232101 Y CN2232101 Y CN 2232101Y CN 95236772 CN95236772 CN 95236772 CN 95236772 U CN95236772 U CN 95236772U CN 2232101 Y CN2232101 Y CN 2232101Y
- Authority
- CN
- China
- Prior art keywords
- valve pocket
- spool
- valve
- piston
- water
- 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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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model provides a one-way valve which is installed in the water meter of the tap water and is composed of a valve sleeve, a valve core which is installed in the valve sleeve, an unlocking piston which is installed in a valve core hole, a valve core end cover which is clamped in the middle of the unlocking piston, a valve core locking pin and a lock pin spring which are installed in a valve core end cover hole, a return spring which is installed in the valve sleeve and retaining rings which are installed on the both ends of the valve sleeve. The one-way type self-locking valve can not start to work without bearing water pressure. When the water meter is connected reversely, the water can not flow from the water meter, so the water stealing can be prevented effectively.
Description
The utility model relates to a kind of one-way valve, particularly a kind of one-way valve that is contained in the tap water water meter.
Be provided with one-way valve in the tap water water meter, forward connect or oppositely connection can use, when only forward connected, indicator of water gauge clockwise rotated (increment), and the indicator of water gauge inverse time rotated (decrement) when oppositely connecting.If water meter forward connection a period of time is oppositely connected a period of time again, the pointer of water meter will just change a period of time and reverse a period of time again, makes the positive and negative counteracting of metering, and making surreptitiously, the water person reaches the surreptitiously purpose of water.In order to prevent surreptitiously water, water inlet port and the water outlet port with the water meter that have are designed to big or small interface, make it can not reversal connection.Also have water meter is installed after stamp lead sealing, make it can not own careless dismounting.Above method is that non insurance bothers again.
The purpose of this utility model provides a kind of self-locking one-way valve that is contained in existing water meter inlet end the inside.
Technical solution of the present utility model is such: self-locking one-way valve of design in the inlet end of water meter, this one-way valve is by a valve pocket, be contained in spool in the valve pocket, be contained in the piston of unblanking the core hole in, be stuck in the piston middle part of unblanking the spool end cap, be contained in spool lock pin and lock pin spring in the spool ending cover hole, be contained in the return spring in the valve pocket and be contained in the back-up ring composition at valve pocket two ends.
When not having hydraulic action on spool, spool is the rigid locking state, can not open.When spool front end water inlet was subjected to the pressure of water, water pressure pushing was opened the plug piston and is moved backward, and the drive spool moves backward, when spool falls back on certain position, osculum on the valve pocket is opened, and makes the water that flows in the valve pocket flow out valve pocket, and at this moment valve is in the unlatching working state.When spool front end hydraulic pressure disappears (as water meter is pulled down), spool travels forward under the effect of return spring, and the osculum on the valve pocket is closed.The self-locking one-way valve can not be opened work when not bearing hydraulic pressure, when oppositely connecting, water can not flow out.Can prevent effectively that surreptitiously the water person steals water.
Description of drawings:
Accompanying drawing 1 is a self-locking one-way valve structures schematic representation;
Accompanying drawing 2 is the valve pocket structural representation;
Accompanying drawing 3 is the valve core structure schematic representation;
Accompanying drawing 4 is the A-A sectional view among Fig. 3;
Accompanying drawing 5 is the piston structure schematic representation of unblanking;
Accompanying drawing 6 is the B-B sectional view among Fig. 5;
Accompanying drawing 7 is a spool end interposed structure schematic representation;
Accompanying drawing 8 is a left view among Fig. 7.
Now in conjunction with the accompanying drawings the utility model is made detailed description:
The self-locking one-way valve comprises a valve pocket 6, valve pocket 6 is provided with four water inlets 11, the inwall of valve pocket 6 is provided with a groove 12, be provided with a spool 2 that has water inlet 13 and pressure chamber 14 in the valve pocket 6, be provided with the piston 3 of unblanking in the hole of spool 2, piston 3 front ends of unblanking are round column structure, afterbody is discoideus, afterbody is eccentric square structure in plectane front portion, cylinder, in axial direction is provided with a straight shape on the center line in eccentric square tail portion to stage casing and wears groove, and there is an inclined-plane afterbody below.The unblank middle part card of piston 3 has a spool end cap 5, be provided with a spool lock pin 10 and lock pin spring 4 in the hole 15 of spool end cap 5, one end of spool lock pin 10 is stuck in 12 li of grooves on valve pocket 6 inwalls, the other end passes the piston 3 supermedial opening slots of unblanking, its end is spacing with towing pin 9, respectively be provided with a back-up ring 1,8 at the two ends of valve pocket 6, the inwall of back-up ring 1,8 and valve pocket 6 adopts drive fit.Between the discoideus end of the piston 3 of unblanking and back-up ring 8, be provided with return spring 7.
Claims (1)
1, a kind of self-locking one-way valve, it is characterized in that having a valve pocket (6), valve pocket (6) is provided with four osculums (11), the inwall of valve pocket (6) is provided with a groove (12), be provided with a spool (2) that has water inlet (13) and pressure chamber (14) in the valve pocket (6), in the hole of spool (2), be provided with the piston of unblanking (3), piston (3) front end of unblanking is a round column structure, afterbody is that portion is discoideus, in the plectane front portion, afterbody is eccentric square structure in the cylinder, in axial direction be provided with a straight shape on the center line in eccentric square tail portion to stage casing and wear groove, there is an inclined-plane afterbody below, the unblank middle part card of piston (3) has a spool end cap (5), be provided with a spool lock pin (10) and lock pin spring (4) in the hole (15) of spool end cap (5), one end of spool lock pin (10) is stuck in groove (12) lining on valve pocket (6) inwall, the other end passes the supermedial opening slot of the piston of unblanking (3), its end is spacing with towing pin (9), respectively be provided with a back-up ring (1) at the two ends of valve pocket (6), (8), back-up ring (1), (8) and the inwall of valve pocket (6) adopt drive fit, between the discoideus end of the piston of unblanking (3) and back-up ring (8), be provided with return spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95236772 CN2232101Y (en) | 1995-05-09 | 1995-05-09 | Self-locking type one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95236772 CN2232101Y (en) | 1995-05-09 | 1995-05-09 | Self-locking type one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2232101Y true CN2232101Y (en) | 1996-07-31 |
Family
ID=33879684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95236772 Expired - Fee Related CN2232101Y (en) | 1995-05-09 | 1995-05-09 | Self-locking type one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2232101Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074195A (en) * | 2013-10-15 | 2015-11-18 | 大陆汽车有限公司 | Pressure-limiting valve for a fuel injection system and fuel injection system |
| CN107143672A (en) * | 2017-06-08 | 2017-09-08 | 苏州金钜松机电有限公司 | A kind of check-valves |
| CN107237904A (en) * | 2017-06-08 | 2017-10-10 | 苏州金钜松机电有限公司 | A kind of voltage stabilizing check valve |
-
1995
- 1995-05-09 CN CN 95236772 patent/CN2232101Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074195A (en) * | 2013-10-15 | 2015-11-18 | 大陆汽车有限公司 | Pressure-limiting valve for a fuel injection system and fuel injection system |
| US10215143B2 (en) | 2013-10-15 | 2019-02-26 | Continental Automotive Gmbh | Pressure-limiting valve for a fuel injection system and fuel injection system |
| CN107143672A (en) * | 2017-06-08 | 2017-09-08 | 苏州金钜松机电有限公司 | A kind of check-valves |
| CN107237904A (en) * | 2017-06-08 | 2017-10-10 | 苏州金钜松机电有限公司 | A kind of voltage stabilizing check valve |
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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 |