CN201416672Y - Air tiny drag slow shut check valve - Google Patents
Air tiny drag slow shut check valve Download PDFInfo
- Publication number
- CN201416672Y CN201416672Y CN2009201179329U CN200920117932U CN201416672Y CN 201416672 Y CN201416672 Y CN 201416672Y CN 2009201179329 U CN2009201179329 U CN 2009201179329U CN 200920117932 U CN200920117932 U CN 200920117932U CN 201416672 Y CN201416672 Y CN 201416672Y
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- China
- Prior art keywords
- valve
- cylinder
- air
- valve seat
- piston
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- Expired - Fee Related
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Abstract
The utility model relates to an air tiny drag slow shut check valve, which comprises a check valve and a slow shut mechanism. The slow shut mechanism adopts an air tiny drag slow shut mechanism whichfurther comprises a cylinder, a piston and a piston rod, wherein air holes are respectively formed on an upper seal cover and a lower seal cover of the cylinder; the cylinder is mounted on a mountingrack on the outer wall of the valve body; and the lower end of the piston rod is fixedly connected with the piston inside the cylinder while the upper end thereof is hinged with a rocker arm fixed ona valve rod. When the water pump is started, the cylinder is filled with air, and the valve is slowly opened simultaneously; and when the water pump stops operation, the valve clack is rapidly closedby 90 percent to boost the air inside the cylinder abruptly to generate resistance force, so that the residual 10 percent thereof is slowly closed, thereby eliminating a water hammer. The utility model has the advantages of reliable closure of the valve clack and safe operation of the water pump, thereby being applicable to water pump outlet pipelines of water supply systems.
Description
Technical field
The utility model relates to a kind of valve, particularly about a kind of Tiny Drag Slow Shut Check Valves.The utility model is applicable on the exit of pump pipeline of water supply system.
Background technique
The micro-resistance slowly-closed buffer valve is used on the exit of pump pipeline of water supply system, realizes slowly opening, speed is closed, the opening-closing process of Slow Close, prevents that medium from flowing backwards, and eliminates water hammer, improves system's security of operation.Its structure mainly is made up of the gentle locking mechanism of safety check.Present Tiny Drag Slow Shut Check Valves, its Slow Close mechanism adopts hydraulic control slow closing mechanism, and this hydraulic control slow closing mechanism enters in the piston cylinder that is located at valve body with the medium pressure liquid in the valve body, and the piston in the piston cylinder is pushed out.When water pump quit work, the flap of safety check dropped on the piston by deadweight and the weight of weight and the pressure of withdrawing fluid, makes the slow return of piston, realized that Slow Close is with the elimination water hammer.But, in actual applications, when the pressure of system is not high, piston return fully often appears, and it is not tight to cause flap to be closed, and the phenomenon that the water pump reversing does not stop influences the property of water pump operation safety.
Summary of the invention
The purpose of this utility model is the problem that exists at prior art, provides that a kind of flap is closed reliably, the air Tiny Drag Slow Shut Check Valves of energy reliably protecting water pump operation safety.
The technical solution of the utility model comprises the safety check locking mechanism that eases up, safety check is made up of valve body, valve seat, flap, valve rod, valve gap, mainly be that Slow Close mechanism is an air micro-resistance slowly-closed mechanism, this air micro-resistance slowly-closed mechanism comprises cylinder, piston, piston rod, cover in the upper cover of cylinder and lower seal and to be respectively equipped with pore, cylinder is installed on the scaffold of valve outer wall, fixedlys connected with piston in cylinder in the lower end of piston rod, and the upper end is by hinged with the rocking bar that is fixed on the valve rod.
In technique scheme, the following capping of cylinder is hinged on the scaffold of valve outer wall.
In above technological scheme, in the pore of capping down, be provided with modulating valve.
In above technological scheme, valve seat is installed in the valve seat orifice made in the valve body, is shaped on the V-type groove on the circumference of valve seat orifice, and valve seat is fixed in the V-type groove of valve seat orifice by the equally distributed interior hexagonal awl-end screw of circumference.
The utility model beneficial effect compared with prior art is that Slow Close mechanism adopts the air micro-resistance slowly-closed mechanism that is installed in valve outer wall, and the working medium of cylinder is an air.When water pump was opened, piston rod and piston that flap drives in the cylinder under pressure medium promotes made cylinder charging, and valve is slowly opened simultaneously; When water pump shut down, flap was by deadweight, the quick closedown 90% of withdrawing fluid pressure elder generation, made in the cylinder gas and the speed generation resistance that boosts, and residue 10% is slowly closed, and reached the elimination water hammer.Its flap is closed reliably, water pump operation safety.
Description of drawings
Fig. 1 is the utility model structure sectional view.
Fig. 2 is the structure sectional view of A-A direction among the utility model Fig. 1.
Embodiment
Air Tiny Drag Slow Shut Check Valves as shown in Figure 1 and Figure 2 comprises the safety check locking mechanism that eases up, and safety check is made up of valve body 4, valve seat 8, flap 6, valve rod 10, valve gap 12.Flap 6 is fixedly connected on by connecting rod 9 in the middle of the valve rod 10, is connected with screw by flat key 11 between connecting rod 9 and the valve rod 10.Valve rod 10 is installed in the valve body 4, is provided with axle sleeve 1 between the two, the fixedly connected weight 3 in an end and the rocking bar 2 of valve rod 10.Slow Close mechanism is an air micro-resistance slowly-closed mechanism, this air micro-resistance slowly-closed mechanism is made up of cylinder 23, piston 22, piston rod 26, under reaching, the upper cover 24 of cylinder 23 is respectively equipped with pore in the capping 19, cylinder 23 is installed on the scaffold 13 of valve body 4 outer walls, and this scaffold 13 is fixedly mounted on the valve body 4 by bolt 25.Fixedlyed connected by nut 21 in cylinder 23 with between the piston 22 in the lower end of piston rod 26, the upper end is by hinged with the rocking bar 2 that is fixed on the valve rod 10.Be respectively equipped with seal ring 20 and sealing gasket 18 between cylinder 23 and piston 22, the following capping 19.The following capping 19 of cylinder 23 is hinged on the scaffold 13 of valve body 4 outer walls by jump ring 14, bearing pin 15, makes air micro-resistance slowly-closed mechanism by rocking bar 2 pullings swing on scaffold 13, keeps rocking bar 2 pulling force on piston rod 26 axial directions.
In above embodiment, be provided with modulating valve in the pore of following capping 19, this modulating valve is by being installed in down in capping 19 pores regulation valve body 17 and forming with the aciculiform spool 16 that described regulation valve body 17 cooperatively interacts, by adjusting the relative position between aciculiform spool 16 and the regulation valve body 17, can regulate Slow Close speed.
In above embodiment, valve seat 8 is installed in the valve seat orifice made in the valve body 4, is shaped on the V-type groove on the circumference of valve seat orifice, and valve seat 8 is fixed in the V-type groove of valve seat orifice by the equally distributed interior hexagonal awl-end screw 5 of circumference, and valve seat 8 is detachably changed.O-ring seals 7 is set between valve seat 8 and valve seat orifice.
Claims (5)
1, a kind of air Tiny Drag Slow Shut Check Valves, comprise the safety check locking mechanism that eases up, safety check is by valve body (4), valve seat (8), flap (6), valve rod (10), valve gap (12) is formed, it is characterized in that Slow Close mechanism is an air micro-resistance slowly-closed mechanism, this air micro-resistance slowly-closed mechanism comprises cylinder (23), piston (22), piston rod (26), upper cover (24) in cylinder (23) reaches down and is respectively equipped with pore in the capping (19), cylinder (23) is installed on the scaffold (13) of valve body (4) outer wall, fixedly connected with piston (22) in cylinder (4) in the lower end of piston rod (26), the upper end is hinged with the rocking bar (2) that is fixed on the valve rod (10).
2, air Tiny Drag Slow Shut Check Valves according to claim 1 is characterized in that the following capping (19) of cylinder (23)-be hinged on the scaffold (13) of valve body (4) outer wall.
3, air Tiny Drag Slow Shut Check Valves according to claim 1 and 2 is characterized in that being provided with modulating valve in the pore of capping (19) down.
4, air Tiny Drag Slow Shut Check Valves according to claim 1 and 2, it is characterized in that valve seat (8) is installed in the valve seat orifice made in the valve body (4), be shaped on the V-type groove on the circumference of valve seat orifice, valve seat (8) is fixed in the V-type groove of valve seat orifice by the equally distributed interior hexagonal awl-end screw (5) of circumference.
5, air Tiny Drag Slow Shut Check Valves according to claim 3, it is characterized in that valve seat (8) is installed in the valve seat orifice made in the valve body (4), be shaped on the V-type groove on the circumference of valve seat orifice, valve seat (8) is fixed in the V-type groove of valve seat orifice by the equally distributed interior hexagonal awl-end screw (5) of circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201179329U CN201416672Y (en) | 2009-04-16 | 2009-04-16 | Air tiny drag slow shut check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201179329U CN201416672Y (en) | 2009-04-16 | 2009-04-16 | Air tiny drag slow shut check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416672Y true CN201416672Y (en) | 2010-03-03 |
Family
ID=41793090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201179329U Expired - Fee Related CN201416672Y (en) | 2009-04-16 | 2009-04-16 | Air tiny drag slow shut check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201416672Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565455A (en) * | 2014-12-10 | 2015-04-29 | 凯喜姆阀门有限公司 | Slowly-closing check valve |
| CN110259998A (en) * | 2019-07-23 | 2019-09-20 | 浙江精嘉阀门有限公司 | A kind of multi-functional weight is relied on oneself dual-seal swing check valve |
-
2009
- 2009-04-16 CN CN2009201179329U patent/CN201416672Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565455A (en) * | 2014-12-10 | 2015-04-29 | 凯喜姆阀门有限公司 | Slowly-closing check valve |
| CN110259998A (en) * | 2019-07-23 | 2019-09-20 | 浙江精嘉阀门有限公司 | A kind of multi-functional weight is relied on oneself dual-seal swing check 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: 20100303 Termination date: 20160416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |