CN207033870U - Super-pressure hydraulic control check valve - Google Patents
Super-pressure hydraulic control check valve Download PDFInfo
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- CN207033870U CN207033870U CN201720792940.8U CN201720792940U CN207033870U CN 207033870 U CN207033870 U CN 207033870U CN 201720792940 U CN201720792940 U CN 201720792940U CN 207033870 U CN207033870 U CN 207033870U
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- push rod
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Abstract
It the utility model is related to a kind of super-pressure hydraulic control check valve, the lower end of valve body is connected with swivel nut, the upper end of valve body is connected with cylinder barrel, cylinder barrel upper end is pressed with bonnet, the central upper portion of swivel nut is provided with valve seat, steel ball is provided with below valve seat, ball retainer is provided with below steel ball, the lower section of ball retainer is provided with steel ball and spring, the bottom centre of swivel nut is provided with oiler, the middle part of sliding channel of valve body is provided with oil-out, valve seat upper surface is resisted against on the step of valve body centre bore, valve seat flange collar is provided with the middle part of valve seat, the sealing with valve body and swivel nut is realized by valve base sealing component respectively in the both sides up and down of valve seat flange collar；Valve base sealing component includes multiple superposed square rings of copper three and YX type sealing rings, and the section of each square ring of copper three is right angled triangle.The top of steel ball is provided with push rod, and the upper end of push rod is connected to the center of piston, and piston is supported on the inwall of cylinder barrel, and the center of bonnet is provided with hydraulic control mouth.The super-pressure hydraulic control check valve can unidirectionally or two-way admittance and sealed reliable.
Description
Technical field
A kind of hydraulic valve is the utility model is related to, more particularly to a kind of super-pressure hydraulic control check valve, belongs to hydraulic test
Technical field.
Background technology
Common check valve, hydraulic control one-way valve are used for below 31.5MPa high-pressure and hydraulic oil circuit, oil circuit in the market
Pressure reaches 40-160MPa commonly known as ultrahigh pressure oilway.U.S. HIP high pressure hydraulic controls check valve can bear the super of 138MPa
High pressure, but it is maximum there was only DN16, and can only one-way conduction, reverse obstructed, price is rather stiff, is the common check valve valency of equal latus rectum
20,000 times or so of lattice, delivery date is also considerably long.
The difficulty of superhigh pressure sealing is, in the presence of super-pressure fluid, larger deformation is produced by sealing structure, is made
Seal clearance increases, sealing ring is squeezed into gap, is pulled off, extrudes, wearing etc. and causing to fail.
Not yet there is latus rectum in more than DN50 in the market, can meet big flow ultrahigh pressure oilway one-way sealing and the list of conducting
To valve, design and application to ultrahigh pressure oilway bring difficulty.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, there is provided a kind of super-pressure fluid-control one-way
Valve, can reliably it be sealed under super-pressure.
To solve above technical problem, a kind of super-pressure hydraulic control check valve of the present utility model, including valve body, the valve body
Lower end be connected with swivel nut, the upper end of the valve body is connected with cylinder barrel, and the upper end of the cylinder barrel is pressed with bonnet, the swivel nut it is upper
Portion center is provided with valve seat, is provided with steel ball below the sealing surface of the valve seat, the lower section of the steel ball is provided with ball retainer, institute
The bottom for stating ball retainer is supported on by steel ball and spring in the swivel nut counterbore of the swivel nut bottom, the bottom of the swivel nut counterbore
Portion center is provided with the oiler communicated with outside, and the middle part of sliding channel of the valve body is provided with the oil-out communicated with body cavity, institute
The upper surface for stating valve seat is resisted against on the step of valve body centre bore, and the middle part of the valve seat is provided with outwardly valve seat flange collar,
The sealing with the valve body and swivel nut is realized by valve base sealing component respectively in the both sides up and down of the valve seat flange collar；Each valve
Seat seal assembly includes multiple superposed square rings of copper three and the YX type sealing rings on the outside of the square ring of copper three respectively, each described
The section of the square ring of copper three is right angled triangle.
Relative to prior art, the utility model achieves following beneficial effect：When oiler connects hydraulic oil, oil liquid pressure
Act on steel ball, steel ball and valve seat form annular line contact, are compressed under the pressure effect of hydraulic oil, realize superelevation densification
Envelope；Ball retainer causes the centre of sphere of steel ball to be in all the time on the center line of valve body, and the periphery of ball retainer is provided with longitudinal oil
Groove, when the pressure of oil-out is more than oiler, steel ball is moved to oiler, and steel ball departs from valve seat, and oiler is led with oil-out
It is logical.Now function is check valve, is led to from top to bottom, reversely obstructed.The tension force of steel ball and spring is used for the reset of steel ball, in oiler
In the case of not having pressure with oil-out, ball retainer is set to promote steel ball to keep good contact with valve seat, it can also be used to prevent
Steel ball rocks back and forth in valve.Realized respectively by the stacked square ring of copper three and YX type sealing rings close in the both sides up and down of valve seat flange collar
Envelope, under the effect of super-pressure fluid, the seal clearance of both sides can become big above and below valve seat flange collar, and the square ring of copper three is due to its sectional dimension
Small, copper material modulus of elasticity is smaller, is easily deformed, and in the presence of hydraulic oil, produces larger radial deformation so that sealing
Gap is remained closed, and YX types sealing ring will not be squeezed into the gap of increase, common to protect so as to bear the fluid pressure of superelevation
Hold good sealing function.
As improvement of the present utility model, each valve base sealing component includes three square rings of copper three, two of which respectively
The square ring of copper three is stacked to be resisted against on the inclined-plane of the valve seat flange collar for square-section, the inclined-plane of the single square ring of copper three.Close to valve
The square ring of copper three of seat flange collar can extend along itself inclined-plane under super-pressure effect, close the inclined-plane of valve seat flange collar all the time；Two
The stacked square ring of copper three mutually extends along itself inclined-plane, closes the annular gap of valve seat periphery sealed letter all the time, so as to it is outer
The YX types sealing ring of side keeps good sealing function jointly.
As further improvement of the utility model, the top of the steel ball is provided with push rod, and the push rod is along the valve seat
Centre bore and valve body centre bore extend upwardly in the cylinder barrel, the upper end of the push rod is connected to the center of piston, described
Piston seal is supported on the inwall of the cylinder barrel, and the center of the bonnet is provided with hydraulic control mouth；The lower section of the piston is provided with push rod
Guide sleeve, the lower end of the push rod guide sleeve are provided with guide sleeve flange collar, and the lower end flange of the guide sleeve flange collar is by the cylinder barrel
It is pressed on the valve body, piston spring is provided between the upper surface of the guide sleeve flange collar and the lower surface of the piston.When
When hydraulic control mouth connects control pressure, piston bears control pressure, is moved downward with push rod, promotes steel ball to depart from valve seat.Due to work
The fluid pressure active area of plug is more than the fluid pressure active area of steel ball, and two area ratios are control ratio, usually 8~
12, therefore can realize that hydraulic control mouth low pressure opens the high pressure of oiler so that oiler and oil-out is forward and reverse is both turned on.Piston
In the case that spring can prevent each hydraulic fluid port without pressure, piston rocks back and forth.
As further improvement of the utility model, the lower surface center of the guide sleeve is provided with downwardly projecting guide sleeve
Boss, the lower end of the guide sleeve boss are inserted in the stepped hole of the valve body, the lower surface of the guide sleeve boss and valve body
Push rod seal assembly is provided between stepped hole, the push rod seal assembly includes multiple superposed square rings of copper three and positioned at copper
YX type sealing rings below three square rings, the section of each square ring of copper three is right angled triangle.The stacked mutual edge of the square ring of copper three
Itself inclined-plane extends, and closes the annular gap of push rod periphery sealed letter all the time, so as to which the YX types sealing ring with lower section is protected jointly
Hold good sealing function.
As further improvement of the utility model, the push rod seal assembly includes four superposed copper triangles
Ring, four square rings of copper three two-by-two group to being stacked respectively as square-section.Two pairs of square rings of copper three to seal relatively reliable.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description, accompanying drawing only provides ginseng
Examine and used with explanation, be not used to limit the utility model.
Fig. 1 is the structural representation of the utility model super-pressure hydraulic control check valve.
Fig. 2 is the enlarged drawing at A positions in Fig. 1.
Fig. 3 is the enlarged drawing at B positions in Fig. 1.
In figure：1. bonnet；1a. hydraulic control mouths；2. cylinder barrel；3. piston；4. push rod guide sleeve；4a. guide sleeve flange collars；4b. is led
To set boss；4c. piston springs；5. valve body；5a. oil-outs；6. swivel nut；6a. oilers；7. push rod；8. valve seat；8a. valve seats
Flange collar；9. steel ball；10. ball retainer；11. steel ball and spring；12. the square ring of bronze medal three；13.YX type sealing rings.
Embodiment
As shown in Figure 1 to Figure 3, super-pressure hydraulic control check valve of the present utility model includes valve body 5, and the lower end of valve body 5 spins
There is swivel nut 6, the upper end of valve body 5 is connected with cylinder barrel 2, and the upper end of cylinder barrel 2 is pressed with bonnet 1, and the central upper portion of swivel nut 6 is provided with valve seat
8, the sealing surface lower section of valve seat 8 is provided with steel ball 9, and the lower section of steel ball 9 is provided with ball retainer 10, and the bottom of ball retainer 10 leads to
Cross steel ball and spring 11 to be supported in the swivel nut counterbore of the bottom of swivel nut 6, the bottom centre of swivel nut counterbore is provided with to be entered with what outside communicated
Hydraulic fluid port 6a, the middle part of sliding channel of valve body 5 are provided with the oil-out 5a communicated with the inner chamber of valve body 5, and the upper surface of valve seat 8 is resisted against in valve body
On the step in heart hole, the middle part of valve seat 8 is provided with outwardly valve seat flange collar 8a, and valve seat flange collar 8a both sides up and down pass through respectively
Valve base sealing component realizes the sealing with valve body 5 and swivel nut 6；Each valve base sealing component includes multiple superposed copper three respectively
Square ring 12 and the YX types sealing ring 13 positioned at the outside of three square ring of copper 12, the section of each square ring 12 of copper three is right angled triangle.
When oiler 6a connects hydraulic oil, oil liquid pressure is acted on steel ball 9, and steel ball 9 and valve seat 8 form annular line contact,
Compressed under the pressure effect of hydraulic oil, realize superhigh pressure sealing；Ball retainer 10 causes the centre of sphere of steel ball 9 to be in valve all the time
On the center line of body 5, the periphery of ball retainer 10 is provided with longitudinal oil groove, when oil-out 5a pressure is more than oiler 6a,
Steel ball 9 moves to oiler 6a, and steel ball 9 departs from valve seat 8, and oiler 6a turns on oil-out 5a.Now function is check valve, from
It is upper and lower logical, it is reversely obstructed.The tension force of steel ball and spring 11 is used for the reset of steel ball 9, is not pressed in oiler 6a and oil-out 5a
In the case of power, ball retainer 10 is set to promote steel ball 9 to keep good contact with valve seat 8, it can also be used to prevent steel ball 9 in valve
Rock back and forth.Sealing is realized in valve seat flange collar 8a both sides up and down by the stacked square ring 12 of copper three and YX types sealing ring 13 respectively,
Under the effect of super-pressure fluid, the seal clearance of above and below valve seat flange collar 8a both sides can become big, and the square ring 12 of copper three is due to its section chi
Very little small, copper material modulus of elasticity is smaller, is easily deformed, and in the presence of hydraulic oil, produces larger radial deformation so that close
Envelope gap is remained closed, and YX types sealing ring 13 will not be squeezed into the gap of increase, so as to bear the fluid pressure of superelevation, altogether
With the good sealing function of holding.
Each valve base sealing component includes three square rings 12 of copper three respectively, and the square ring of two of which copper three is stacked to cut for rectangle
Face, the inclined-plane of the single square ring of copper three are resisted against on valve seat flange collar 8a inclined-plane.The square ring of copper three close to valve seat flange collar 8a is in superelevation
Under pressure effect, it can be extended along itself inclined-plane, close valve seat flange collar 8a inclined-plane all the time；The two stacked mutual edges of the square ring of copper three
Itself inclined-plane extends, and closes the annular gap of valve seat periphery sealed letter all the time, so as to common with the YX types sealing ring 13 in outside
Keep good sealing function.
The top of steel ball 9 is provided with push rod 7, and centre bore and valve body centre bore of the push rod 7 along valve seat 8 extend upwardly to cylinder barrel 2
In, the upper end of push rod 7 is connected to the center of piston 3, and piston 3 seals the inwall for being supported on cylinder barrel 2, and the center of bonnet 1 is provided with liquid
Control mouth 1a；The lower section of piston 3 is provided with push rod guide sleeve 4, and the lower end of push rod guide sleeve 4 is provided with guide sleeve flange collar 4a, and guide sleeve is convex
Circle 4a lower end flange is pressed on valve body 5 by cylinder barrel 2, is set between guide sleeve flange collar 4a upper surface and the lower surface of piston 3
There is piston spring 4c.When hydraulic control mouth 1a connects control pressure, piston 3 bears control pressure, is moved downward with push rod 7, promotes
Steel ball 9 departs from valve seat 8.Because the fluid pressure active area of piston 3 is more than the fluid pressure active area of steel ball 9, two areas
The ratio between be control ratio, usually 8~12, therefore can realize that hydraulic control mouth 1a low pressure opens oiler 6a high pressure so that enter
Hydraulic fluid port 6a and oil-out 5a is forward and reverse is both turned on.In the case that piston spring 4c can prevent each hydraulic fluid port without pressure, piston 3 shakes back and forth
It is dynamic.
The lower surface center of guide sleeve is provided with downwardly projecting guide sleeve boss 4b, guide sleeve boss 4b lower end insertion valve
In the stepped hole of body 5, push rod seal assembly, push rod seal group are provided between guide sleeve boss 4b lower surface and valve body stepped hole
Part includes multiple superposed square rings 12 of copper three and the YX types sealing ring 13 positioned at the lower section of three square ring of copper 12, each square ring 12 of copper three
Section be right angled triangle.The stacked square ring 12 of copper three mutually extends along itself inclined-plane, closes the sealing of push rod periphery all the time
The annular gap of letter, so as to which the YX types sealing ring 13 with lower section keeps good sealing function jointly.
Push rod seal assembly includes four superposed square rings 12 of copper three, four square rings 12 of copper three two-by-two group to folding respectively
It is set to square-section.
Super-pressure hydraulic control check valve of the present utility model can be used for the one-way sealing of 40-160MPa ultrahigh pressure oilways and lead
Logical, its latus rectum can be designed into DN64 or so, meet the sealing and conducting of the ultrahigh pressure oilway of big flow.
It the foregoing is only the preferable possible embodiments of the utility model, non-therefore limitation patent of the present utility model
Protection domain.In addition to the implementation, the utility model can also have other embodiment.It is all to use equivalent substitution or equivalent change
The technical scheme to be formed is changed, is all fallen within the protection domain of the requires of the utility model.Technology of the utility model without description is special
Sign can be realized by or using prior art, will not be repeated here.
Claims (5)
1. a kind of super-pressure hydraulic control check valve, including valve body, the lower end of the valve body is connected with swivel nut, and the upper end of the valve body connects
Cylinder barrel is connected to, the upper end of the cylinder barrel is pressed with bonnet, and the central upper portion of the swivel nut is provided with valve seat, the sealing surface of the valve seat
Lower section is provided with steel ball, and the lower section of the steel ball is provided with ball retainer, and the bottom of the ball retainer passes through steel ball and spring branch
In the swivel nut counterbore of the swivel nut bottom, the bottom centre of the swivel nut counterbore is provided with the oiler communicated with outside, institute for support
The middle part of sliding channel for stating valve body is provided with the oil-out communicated with body cavity, it is characterised in that：The upper surface of the valve seat is resisted against
On the step of valve body centre bore, the middle part of the valve seat is provided with outwardly valve seat flange collar, and up and down the two of the valve seat flange collar
The sealing with the valve body and swivel nut is realized by valve base sealing component respectively in side；Each valve base sealing component includes more respectively
The individual superposed square ring of copper three and the YX type sealing rings on the outside of the square ring of copper three, the section of each square ring of copper three is right angle
Triangle.
2. super-pressure hydraulic control check valve according to claim 1, it is characterised in that：Each valve base sealing component wraps respectively
Include three square rings of copper three, the square ring of two of which copper three is stacked to as square-section, and the inclined-plane of the single square ring of copper three is resisted against described
On the inclined-plane of valve seat flange collar.
3. super-pressure hydraulic control check valve according to claim 1, it is characterised in that：The top of the steel ball is provided with push rod,
Centre bore and valve body centre bore of the push rod along the valve seat are extended upwardly in the cylinder barrel, the upper end connection of the push rod
At the center of piston, the piston seal is supported on the inwall of the cylinder barrel, and the center of the bonnet is provided with hydraulic control mouth；The work
The lower section of plug is provided with push rod guide sleeve, and the lower end of the push rod guide sleeve is provided with guide sleeve flange collar, under the guide sleeve flange collar
End boss is pressed on the valve body by the cylinder barrel, between the upper surface of the guide sleeve flange collar and the lower surface of the piston
Provided with piston spring.
4. super-pressure hydraulic control check valve according to claim 3, it is characterised in that：The lower surface center of the guide sleeve is set
There is downwardly projecting guide sleeve boss, the lower end of the guide sleeve boss is inserted in the stepped hole of the valve body, the guide sleeve
Push rod seal assembly is provided between the lower surface of boss and valve body stepped hole, the push rod seal assembly includes multiple superposed
The square ring of copper three and the YX type sealing rings below the square ring of copper three, the section of each square ring of copper three is right angled triangle.
5. super-pressure hydraulic control check valve according to claim 4, it is characterised in that：The push rod seal assembly includes four
The superposed square ring of copper three, four square rings of copper three two-by-two group to being stacked respectively as square-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720792940.8U CN207033870U (en) | 2017-07-03 | 2017-07-03 | Super-pressure hydraulic control check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720792940.8U CN207033870U (en) | 2017-07-03 | 2017-07-03 | Super-pressure hydraulic control check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207033870U true CN207033870U (en) | 2018-02-23 |
Family
ID=61466492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720792940.8U Active CN207033870U (en) | 2017-07-03 | 2017-07-03 | Super-pressure hydraulic control check valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN207033870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388346A (en) * | 2019-07-11 | 2019-10-29 | 燕山大学 | Super-pressure relief valve suitable for impure emulsifiable solution medium |
-
2017
- 2017-07-03 CN CN201720792940.8U patent/CN207033870U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388346A (en) * | 2019-07-11 | 2019-10-29 | 燕山大学 | Super-pressure relief valve suitable for impure emulsifiable solution medium |
| CN110388346B (en) * | 2019-07-11 | 2020-10-09 | 燕山大学 | Ultrahigh pressure relief valve suitable for impurity-containing emulsion medium |
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