CN209325068U - A kind of damping slow-closing type lift check valve - Google Patents
A kind of damping slow-closing type lift check valve Download PDFInfo
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- CN209325068U CN209325068U CN201822201857.6U CN201822201857U CN209325068U CN 209325068 U CN209325068 U CN 209325068U CN 201822201857 U CN201822201857 U CN 201822201857U CN 209325068 U CN209325068 U CN 209325068U
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- damping
- damping piston
- flap
- guide rod
- piston cylinder
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Abstract
The utility model is kind of a damping slow-closing type lift check valve, is equipped with step-like damping piston cylinder in the valve body on the downside of valve deck, and damping piston cylinder lower end is equipped with circular hole, is sealed respectively by seal washer between damping piston cylinder and valve body and valve deck；Flap guide rod passes through the circular hole of damping piston cylinder lower end, and flap guide rod upper end is cased with damping piston plate and is fixed by hex nut A and the external screw thread of flap guide rod upper end, and external screw thread has flat design cooperation check washer to be used to prevent nut loosening；At the step of damping piston cylinder interior, damping piston plate and the flap guide rod across damping piston cylinder circular hole can move up and down damping piston board in damping piston cylinder, and the damping piston plate is equipped with multiple perforative apertures.The lift check valve of the utility model uses multi-sealed and damping device, which has that structure simple, good airproof performance, noise be low, long service life, and overall cost is low.
Description
Technical field
The utility model relates to a kind of damping slow-closing type lift check valves.
Background technique
Lift check valve refers to be flowed and automatic open and close flap by medium itself, for the valve for preventing medium from flowing backwards
Door.Medium refluence can generate impact of water hammer after termination of pumping, will lead to the damage of valve, pipeline or equipment when pressure is serious, especially
It is for big mouth pipeline or pressure duct.And in valve body closure, medium is excessive to the surge of flap and generates larger make an uproar
Sound reduces the service life of check-valves.Therefore, a kind of low water hammer, low noise, the high life and using extensively, cost performance it is high
Check-valves is the purpose of the present invention.
Utility model content
In view of the above-mentioned drawbacks of the prior art, to provide a kind of damping slow for technical problem to be solved in the utility model
Enclosed up-down check-valves cooperates damping piston plate using damping piston cylinder, and is equipped with multiple perforation on damping piston plate, is used to
Circulation piston cylinder in fluid and have the function that damping, rise or fall flap slowly, reduce water hammer pressure simultaneously reach quiet
The purpose of sound.The addition of damping fluid further increases the service life of valve body while damping.
The technical solution that the utility model solves above-mentioned technical problem is: a kind of damping slow-closing type lift check valve, including
Valve body, flap, valve seat and valve deck；The valve deck is fixed on above valve body by stud and hex nut B；Valve deck in the valve body
Downside is equipped with step-like damping piston cylinder, and damping piston cylinder lower end is equipped with circular hole, between damping piston cylinder and valve body and valve deck
It is sealed respectively by seal washer；For the flap in valve body, flap lower side seals cover closes valve seat；It is led for flap flap upper end
To bar；Flap guide rod passes through the circular hole of damping piston cylinder lower end, and flap guide rod upper end is cased with damping piston plate and by six
Angle nut A and the external screw thread of flap guide rod upper end are fixed, and external screw thread has flat design cooperation check washer to be used to prevent nut
It loosens；Flap guide rod and damping piston plate cross section are circle, and the cross-sectional diameter of damping piston plate is greater than flap guide rod
Cross-sectional diameter；Damping piston board at the step of damping piston cylinder interior, damping piston plate and pass through damping piston cylinder
The flap guide rod of circular hole can move up and down in damping piston cylinder, and the damping piston plate is equipped with multiple perforative small
Hole.
Further, the inner sidewall of the damping piston cylinder and valve stem contacts is equipped with O-ring and axle sleeve from bottom to up.
Further, it is cased with damping spring on the flap guide rod, the damping spring upper end to damping piston cylinder, under
End is corresponding on the damping piston cylinder and flap to be equipped with spring positioning to flap.
Further, the flap is collar plate shape.
Further, damping liquid injection hole is designed in the valve deck upper end, is sealed by hexagonal spiro plug；The damping liquid
For pure water or hydraulic oil.
Further, the flap and the corresponding sealing surface weld deposit corrosion-proof wear hard alloy of valve seat.
Further, the external screw thread of flap guide rod upper end has flat design cooperation check washer to be used to prevent hexagonal
Nut A loosens.
Further, the external screw thread of the valve rod upper end is less than flap guiding shank diameter.
Further, groove corresponding with hex nut is equipped on the inside of the valve deck.
The utility model compared with the existing technology the utility model has the advantages that
1, the damping piston plate of the utility model is fixed on flap guide rod and piston cylinder is cooperated using small―gap suture, living
Seben design has multiple apertures, the fluid in piston cylinder and has the function that damping for circulating, make flap slowly rise or under
Drop reduces water hammer pressure and achievees the purpose that mute.This aperture is according to the parameters meter such as pressure medium and caliber size, velocity of medium
It calculates and determines.
2, the damping piston cylinder lower end design of the utility model has the circular hole matched with flap guide rod, and circular hole lower end is used
O-ring sealing, the design of circular hole upper end have the axle sleeve with the cooperation of flap guide rod, to guarantee the flexibility of flap lifting.
3, the utility model damping piston cylinder lower end and the design of the flap back side have spring positioning step, play to damping spring
The effect of positioning and guiding, guarantees the leakproofness and cushioning effect of valve.
4, damping liquid injection hole is designed in the valve deck upper end of the utility model, convenient for injection liquid, and passes through hexagonal spiro plug
Sealing.Pure water or hydraulic oil etc. can be used in damping liquid.Due to using individual damping liquid, avoids and damped using medium
Damage to damping unit greatly improves the service life of damping unit.
5, the flap of the utility model is collar plate shape structure, and sealing surface designs for flat seal, can be reduced in this way to adding
The requirement of work precision, while can also make flap and sealing surface of seat that can ensure that good sealing performance with automatic attaching.Flap
Sealing surface and valve base sealing surface build-up welding corrosion-proof wear hard alloy, significantly increase the service life of valve.
6, the flap guide rod upper end design of the utility model has external screw thread, this external screw thread is less than flap and is oriented to shank diameter,
To position to piston, external screw thread has flat design cooperation check washer, to prevent the pine of flap guide rod fastening nut
It is dynamic.Flap guide rod surface carries out reasonable cure process, and has high surface smoothness, and to reach wear-and corrosion-resistant, raising makes
Use the service life.
Detailed description of the invention
The schematic diagram of Fig. 1 the utility model embodiment；
The lock washer schematic diagram of Fig. 2 the utility model embodiment.
Each portion's title and label in figure: 1. valve bodies, 2. flaps, 3. damping springs, 4. damping piston cylinders, 5.O type circle, 6. axis
Set, 7. damping piston plates, 8. lock washers, 9. hex nut A, 10. gasket seals, 11. valve decks, 12. studs, 13. hexagonal spiral shells
Female B, 14. hexagonal spiro plugs.
Specific embodiment
The embodiments of the present invention are described in further detail below in conjunction with Detailed description of the invention, but the present embodiment and are not had to
In limitation the utility model, all similar structures and its similar variation using the utility model should all be included in the utility model
Protection scope.
As depicted in figs. 1 and 2, a kind of damping slow-closing type lift check valve provided by the embodiment of the utility model, including valve
Body 1, flap 2, valve seat and valve deck 11；The valve deck 11 is fixed on 1 top of valve body by stud 12 and hex nut B13；It is described
Step-like damping piston cylinder 4 is equipped in valve body 1 on the downside of valve deck 11,4 lower end of damping piston cylinder is equipped with circular hole, damping piston cylinder 4
It is sealed respectively by seal washer 10 between valve body 1 and valve deck 11；The flap 2 is in valve body 1,2 lower side seals face of flap
Lid closes valve seat；2 upper end of flap is flap guide rod；Flap guide rod passes through the circular hole of 4 lower end of damping piston cylinder, flap guide rod
Upper end is cased with damping piston plate 7 and is fixed by hex nut A9 and the external screw thread of flap guide rod upper end, and external screw thread has flat
Design cooperation check washer is used to prevent hex nut A from loosening；Flap guide rod and 7 cross section of damping piston plate are circle, resistance
The cross-sectional diameter of Buddhist nun's piston plate 7 is greater than the cross-sectional diameter of flap guide rod；Damping piston plate 7 is stuck in damping piston cylinder 4
At the step in portion, damping piston plate 7 and flap guide rod across 4 circular hole of damping piston cylinder can be in damping piston cylinder 4 on
Lower movement, the damping piston plate 7 are equipped with multiple perforative apertures.Damping piston plate 7 is fixed on flap guide rod, and resistance
Buddhist nun's piston cylinder 4 is cooperated using small―gap suture, and the design of damping piston plate 7 has multiple apertures, for the fluid in damping piston cylinder 4 that circulates
And have the function that damping, it rises or falls flap 2 slowly, reduces water hammer pressure and achieve the purpose that mute.This aperture root
It calculates and determines according to the parameters such as pressure medium and caliber size, velocity of medium.
The inner sidewall that the damping piston cylinder 4 is contacted with flap guide rod is equipped with O-ring 5 and axle sleeve 6 from bottom to up.Damping
The design of 4 lower end of piston cylinder has the circular hole matched with flap guide rod, and circular hole lower end is sealed with O-ring 5, and the design of circular hole upper end has
The axle sleeve 6 cooperated with flap guide rod, to guarantee the flexibility of the lifting of flap 2.
Damping spring 3,3 upper end of damping spring to damping piston cylinder 4, lower end to valve are cased on the flap guide rod
Valve 2, it is corresponding on the damping piston cylinder 4 and flap 2 to be equipped with spring positioning step, positioning and guiding are played to damping spring 3
Effect, guarantee the leakproofness and cushioning effect of valve.
The flap 2 is collar plate shape.Flap 2 is collar plate shape structure, and sealing surface is designed for flat seal, can be reduced in this way
Requirement to machining accuracy, while can also make flap 2 and sealing surface of seat that can ensure that good leakproofness with automatic attaching
Energy.2 sealing surface of flap and valve base sealing surface build-up welding corrosion-proof wear hard alloy, significantly increase the service life of valve.
Damping liquid injection hole is designed in 11 upper end of valve deck, is sealed by hexagonal spiro plug 14；The damping liquid is pure
Water purification or hydraulic oil.Pure water or hydraulic oil etc. can be used in damping liquid.Due to using individual damping liquid, use is avoided
Medium damps the damage to damping unit, greatly improves the service life of damping unit.
The flap 2 sealing surface weld deposit corrosion-proof wear hard alloy corresponding with valve seat.
The external screw thread of flap guide rod upper end is less than flap and is oriented to shank diameter, to position to piston, outer spiral shell
Line, which is equipped with flat design cooperation check washer 8, to be used to prevent hex nut A9 from loosening.
Groove corresponding with hex nut 9 is equipped on the inside of the valve deck 11.
The stem surface carries out cure process, and is ground, is polished etc. and improving surface smoothness, to reach wear-resisting resistance to
Erosion, improves service life.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any change or replacement expected without creative work be should be covered within the scope of the utility model.
Therefore, the protection scope of the utility model should be determined by the scope of protection defined in the claims.
Claims (9)
1. a kind of damping slow-closing type lift check valve, which is characterized in that including valve body (1), flap (2), valve seat and valve deck (11)；
The valve deck (11) is fixed on above valve body (1) by stud (12) and hex nut B (13)；The interior valve deck of the valve body (1)
(11) downside is equipped with step-like damping piston cylinder (4), and damping piston cylinder (4) lower end is equipped with circular hole, damping piston cylinder (4) and valve
It is sealed respectively by seal washer (10) between body (1) and valve deck (11)；The flap (2) is in valve body (1), under flap (2)
Side seal cover closes valve seat；Flap (2) upper end is flap guide rod；Flap guide rod passes through the circle of damping piston cylinder (4) lower end
Hole, flap guide rod upper end are cased with damping piston plate (7) and pass through the external screw thread of hex nut A (9) and flap guide rod upper end
Fixed, external screw thread has flat shape design cooperation check washer to be used to prevent nut loosening；Flap guide rod and damping piston plate
(7) cross section is circle, and the cross-sectional diameter of damping piston plate (7) is greater than the cross-sectional diameter of flap guide rod；Damping piston
Plate (7) is stuck at the internal step of damping piston cylinder (4), damping piston plate (7) and the flap for passing through damping piston cylinder (4) circular hole
Guide rod can move up and down in damping piston cylinder (4), and the damping piston plate (7) is equipped with multiple perforative apertures.
2. damping slow-closing type lift check valve according to claim 1, which is characterized in that the damping piston cylinder (4) with
The inner sidewall of flap guide rod contact is equipped with O-ring (5) and axle sleeve (6) from bottom to up.
3. damping slow-closing type lift check valve according to claim 1, which is characterized in that the flap (2) is collar plate shape.
4. damping slow-closing type lift check valve according to claim 1, which is characterized in that valve deck (11) the upper end design
Damping liquid injection hole is sealed by hexagonal spiro plug (14)；The damping liquid is pure water or hydraulic oil.
5. damping slow-closing type lift check valve according to claim 1, which is characterized in that the flap (2) and valve seat pair
The sealing surface weld deposit corrosion-proof wear hard alloy answered.
6. damping slow-closing type lift check valve according to claim 1, which is characterized in that flap guide rod upper end
External screw thread has flat design cooperation check washer (8) to be used to prevent hex nut A (9) from loosening.
7. damping slow-closing type lift check valve according to claim 1, which is characterized in that flap guide rod upper end
External screw thread is less than flap and is oriented to shank diameter.
8. damping slow-closing type lift check valve according to claim 1, which is characterized in that be equipped on the inside of the valve deck (11)
Groove corresponding with hex nut A (9).
9. damping slow-closing type lift check valve according to claim 1, which is characterized in that flap guide rod surface into
Row cure process, and be ground, polish raising surface smoothness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822201857.6U CN209325068U (en) | 2018-12-26 | 2018-12-26 | A kind of damping slow-closing type lift check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822201857.6U CN209325068U (en) | 2018-12-26 | 2018-12-26 | A kind of damping slow-closing type lift check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209325068U true CN209325068U (en) | 2019-08-30 |
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ID=67728915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822201857.6U Active CN209325068U (en) | 2018-12-26 | 2018-12-26 | A kind of damping slow-closing type lift check valve |
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| Country | Link |
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| CN (1) | CN209325068U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594419A (en) * | 2019-09-12 | 2019-12-20 | 大连大高阀门股份有限公司 | Angle type lifting check valve |
| CN112066048A (en) * | 2020-09-16 | 2020-12-11 | 邵玉强 | Slow-closing check valve |
-
2018
- 2018-12-26 CN CN201822201857.6U patent/CN209325068U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594419A (en) * | 2019-09-12 | 2019-12-20 | 大连大高阀门股份有限公司 | Angle type lifting check valve |
| CN112066048A (en) * | 2020-09-16 | 2020-12-11 | 邵玉强 | Slow-closing check valve |
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