CN109185507A - Check valve and oil pumping device with check valve - Google Patents
Check valve and oil pumping device with check valve Download PDFInfo
- Publication number
- CN109185507A CN109185507A CN201811184239.3A CN201811184239A CN109185507A CN 109185507 A CN109185507 A CN 109185507A CN 201811184239 A CN201811184239 A CN 201811184239A CN 109185507 A CN109185507 A CN 109185507A
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- oil
- valve
- rod
- spring
- check valve
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- 238000005086 pumping Methods 0.000 title claims description 19
- 239000007788 liquid Substances 0.000 claims description 102
- 230000008676 import Effects 0.000 claims description 34
- 239000012530 fluid Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The present embodiment provides a kind of check valve, which includes valve body and is set to valve intracorporal core assembly the present invention.With oil inlet, oil outlet and the valve chamber for being connected to oil inlet and oil outlet on valve body, valve chamber includes the oil suction chamber being sequentially communicated, connecting cavity and oil outlet chamber, raised positive stop lug boss on the side wall of oil outlet chamber, is in circular arc camber at step.Core assembly includes valve rod, spring base, valve rod spring and baffle clip.Valve rod includes the body of rod and is formed in body of rod one end and tapered flaring limiting section, and the body of rod, which is worn, penetrates connecting cavity and oil suction chamber, and flaring limiting section and positive stop lug boss cooperate.Spring socket sleeve is set to the other end of the body of rod and is located in oil suction chamber.Valve rod spring is fixed on spring base and is contained in spring base and oil suction chamber between the end of connecting cavity side, and spring base pushes against valve rod spring.Baffle clip is set to the outside of spring base.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, and in particular to a kind of check valve and the oil pumping device with check valve.
Background technique
Usually require that oil liquid is flowed in one direction and cannot be flowed back in hydraulic device, it usually in this case can be
Check valve is installed to realize the one-way flow of oil liquid in hydraulic device.But current check valve is divided into straight check valve and valve
Formula check valve, straight check valve its sealing effect and bad when oil liquid reverse flow；And flap-type check valve, although it has
Good sealing effect, but structure is very complicated.
In addition, the oil liquid that oil pumping device pumps out usually there will be biggish bubble in oil liquid transmission process, these bubbles
When exporting by traditional straight check valve or flap-type check valve, bubble can generate very big turbulent flow Karman vortex street, thus
Cause very big energy consumption.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, provides a kind of check valve and the oil pumping device with check valve.
To achieve the goals above, the present invention includes valve body and setting the present embodiment provides a kind of check valve, the check valve
In the intracorporal core assembly of valve.With oil inlet, oil outlet and the valve chamber for being connected to oil inlet and oil outlet, valve chamber packet on valve body
Include the oil suction chamber being sequentially communicated, connecting cavity and oil outlet chamber, raised positive stop lug boss on the side wall of oil outlet chamber, in circle at step
Arc surface.Core assembly includes valve rod, spring base, valve rod spring and baffle clip.Valve rod includes the body of rod and is formed in the body of rod
One end and tapered flaring limiting section, the body of rod, which is worn, penetrates connecting cavity and oil suction chamber, and flaring limiting section and positive stop lug boss cooperate.Spring
Cover for seat is set to the other end of the body of rod and is located in oil suction chamber.Valve rod spring is fixed on spring base and is contained in spring base and oil suction chamber
Between the end of connecting cavity side, spring base pushes against valve rod spring.Baffle clip is set to the outside of spring base.
An embodiment according to the present invention, has baffle snap-ring groove on the lateral wall of the other end of the body of rod, and baffle clip is set
It is placed in baffle snap-ring groove, there is the flange extended to valve inner on spring base.
An embodiment according to the present invention, check valve further include the oil inlet plate being set in oil suction chamber, the middle part of oil inlet plate
Pilot hole is offered, multiple oil inlets are formed in the circumferential direction of pilot hole, and the body of rod, which is worn, to be penetrated pilot hole and filling under the action of oil pressure
It is moved in distribution.
An embodiment according to the present invention is uniformly provided with three and pilot hole phase along the circumferential direction of pilot hole on oil inlet plate
The arc groove cut, three arc grooves form three oil inlets between the curved wall of valve body respectively.
The present invention also provides another check valve, which includes valve body and core assembly.On valve body have oil inlet,
Oil outlet and the valve chamber for being connected to oil inlet and oil outlet.Core assembly is set to valve chamber, and core assembly includes fixing seat, spool
Spring and spool.Fixing seat is fixed in valve chamber.Fixing seat is fixed in one end of valve core spring, where the other end to oil inlet
Side extend.Spool is fixed on the other end of valve core spring, and oil inlet is opened or blocked to spool.
An embodiment according to the present invention, spool are the plugging block of ball-type steel ball or cone cell.
An embodiment according to the present invention, valve chamber have internal screw thread, and fixing seat is in hollow column, have in fixing seat with
The external screw thread that internal screw thread on valve chamber matches, fixing seat are screwed in valve chamber.
An embodiment according to the present invention, fixing seat include triangular base and spring fixing portion.Triangular base is fixed on
In valve chamber, three fan-shaped oilholes are formed between three side walls of triangular base and the valve chamber inner sidewall of arc.Spring is fixed
Portion is formed in triangular base and to the side protrusion where oil inlet, and valve core spring is fixed on spring fixing portion.
On the other hand, the present invention also provides a kind of oil pumping devices with check valve, this has the oil pumping device of check valve
Including cabinet, anti-return component, piston component and above-mentioned check valve.There is cabinet oil liquid import and oil liquid to export, and oil liquid goes out
Mouth is set to the radial direction of cabinet.Anti-return component is located in the box body and is set to oil liquid import.Piston component include piston rod and
The piston spring being sheathed on piston rod, piston rod protrude into cabinet from one end of cabinet.Check valve is set to oil liquid outlet, single
It is connected to the oil inlet of valve with the outlet of the oil liquid of cabinet.
When piston component backhaul, anti-return component opens oil liquid import, and the core assembly on check valve closes oil inlet, oil
Liquid enters in cabinet through oil liquid import；In piston press, anti-return component closes oil liquid import, and check valve internal valve core assembly is beaten
Drive hydraulic fluid port into, the intracorporal oil liquid of case enters check valve through oil liquid outlet and oil inlet and flows out through oil outlet.
An embodiment according to the present invention, anti-return component includes valve rod, spring base, valve rod spring and baffle clip.
Valve rod includes the body of rod and is formed in body of rod one end and tapered flaring limiting section, and the body of rod protrudes into oil liquid import and the work in oil pressure
It is moved in oil liquid import under, raised limiting section in oil liquid import, flaring limiting section is matched with limiting section.Spring
Cover for seat is set to the other end of the body of rod.Valve rod spring is fixed on spring base, and spring base pushes against valve rod spring.Baffle clip is set to bullet
The outside of spring abutment.
In conclusion check valve provided by the invention and the oil pumping device with check valve, by the valve chamber in valve body
Interior setting core assembly, core assembly open or close oil inlet according to oil pressure, realize the one-way transmission of oil liquid.The present invention provides
One-way valve structures it is simple.For sealing performance, when core assembly is composed by valve rod, valve rod spring and sealing ring
When structure, when oil liquid enters from oil inlet side, the side where the Operating valve rod to oil outlet in oil pressure is mobile, valve rod bullet
Spring is compressed, and flaring limiting section is detached from positive stop lug boss, and oil liquid enters in check valve and exports from oil outlet；And when oil liquid is from fuel-displaced
From when entering, oil pressure is acted on flaring limiting section for mouth side, which is pressed in limiting section is flared on positive stop lug boss, oil duct
It is blocked completely, there is good leakproofness.Likewise, when structure composed by core assembly is valve core spring and spool,
When oil liquid enters from oil inlet, spool is detached from oil inlet, and oil liquid enters check valve and exports from from oil outlet；When oil liquid is from out
When hydraulic fluid port side inputs, under the action of oil pressure, spool will be pressed on oil outlet and oil pressure is bigger, and the power of compression also will more
Greatly, sealing effect also will be better.
In addition, being valve rod, in structure composed by valve rod spring and sealing ring in core assembly, in the circumferential direction of pilot hole
The oil inlet of three class wedge structures as composed by the curved wall of arc groove and valve body of upper setting, the structure is not only unidirectional
Pressurization is realized on valve, while the oil inlet of class wedge structure realizes the laminar flow of oil liquid, laminar flow can well fill pump oil
It sets the larger bubbles generated in oil liquid to break up, reduces energy loss caused by the produced turbulent flow Karman vortex street of larger bubbles.
Likewise, setting fixing seat includes triangular base by the spool composed by valve core spring and spool.Triangular base
Three side walls and arc valve chamber inner sidewall between form three fan-shaped oilholes, fan-shaped oilhole had equally both been able to achieve increasing
Pressure, while can also reduce energy loss caused by turbulent flow Karman vortex street.
For above and other objects of the present invention, feature and advantage can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate attached drawing, it is described in detail below.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of the check valve of one embodiment of the invention offer.
Fig. 2 show the cross-sectional view of check valve shown in FIG. 1；
Fig. 3 show the side view of check valve shown in FIG. 1.
Figure 1A show the structural schematic diagram of valve body in Fig. 1.
Figure 1B show valve body cross-sectional view in Fig. 1.
Fig. 1 C show in Fig. 1 the enlarged diagram at A.
Fig. 4 show the assembling schematic diagram of core assembly in Fig. 1.
Fig. 5 show the structural schematic diagram of the oil pumping device with check valve of the offer of the embodiment of the present invention one.
Fig. 6 show the structural schematic diagram of check valve provided by Embodiment 2 of the present invention.
Fig. 6 A show the structural schematic diagram of valve body in Fig. 6.
Fig. 7 show the structural schematic diagram of the oil pumping device provided by Embodiment 2 of the present invention with check valve.
Fig. 8 show the structural schematic diagram of the check valve of the offer of the embodiment of the present invention three.
Fig. 9 show another embodiment of the present invention provides check valve structural schematic diagram.
Specific embodiment
Embodiment one
As shown in Figures 1 to 4, check valve 400 provided in this embodiment includes valve body 1 and the spool being set in valve body 1
Component 2.On valve body 1 with oil inlet 11, oil outlet 12 and be connected to oil inlet and oil outlet valve chamber 13, valve chamber 13 include according to
Oil suction chamber 131, connecting cavity 132 and the oil outlet chamber 133 of secondary connection, raised positive stop lug boss on the side wall of oil outlet chamber 133
134, it is in circular arc camber at step.Core assembly 2 includes valve rod 21, spring base 22, valve rod spring 23 and baffle clip 24.Valve
Bar 21 includes the body of rod 211 and is set to 211 one end of the body of rod and tapered flaring limiting section 212, and the body of rod 211, which is worn, injects oil pocket
131 and connecting cavity 132, flaring limiting section 212 is matched with positive stop lug boss 134.Valve rod spring 23 is sheathed on the another of the body of rod 211
It holds and is located in oil suction chamber 131.Valve rod spring 23 is fixed on spring base 22 and is contained in spring base 22 and oil suction chamber 131 close to even
Between the end for connecing 132 side of chamber, spring base 22 pushes against valve rod spring 23.Baffle clip 24 is set to the outside of spring base 22.
In this present embodiment, as shown in Figure 2 and Figure 4, there is baffle snap-ring groove on the lateral wall of the other end of the body of rod 211
2111, baffle clip 24 is set in baffle snap-ring groove 2111, has the flange 221 extended to valve inner on spring base 22.
For the working principle for preferably introducing check valve, in this present embodiment, as shown in figure 5, the present embodiment also provides one
Kind has the oil pumping device of check valve, and it includes cabinet 100, anti-return component 200, piston group that this, which has the oil pumping device of check valve,
Part 300 and check valve provided in this embodiment 400.Cabinet 100 has oil liquid import 101 and oil liquid outlet 102, oil liquid outlet
102 are set to the radial direction of cabinet 100.Anti-return component 200 is located in cabinet 100 and is set to oil liquid import 101.Piston component
300 include piston rod 301 and the piston spring 302 being sheathed on piston rod 301, and piston rod 301 protrudes into case from one end of cabinet
In body 100.Check valve 400 is set to oil liquid outlet 102, and the oil inlet 11 of check valve 400 is connected with the oil liquid of cabinet outlet 102
It is logical.In this present embodiment, oil liquid oil inlet 101 and piston component 300 are respectively arranged at the both ends of cabinet 100.
In this present embodiment, the structure of anti-return component 200 is identical as the structure of the core assembly in check valve, includes
Valve rod, spring base, valve rod spring and baffle clip.Valve rod includes the body of rod and is formed in body of rod one end and tapered flaring limit
Position portion, the body of rod protrude into oil liquid import and move in oil liquid import 101 under the action of oil pressure, have in oil liquid import 101 convex
The limiting section 103 risen, flaring limiting section are matched with limiting section 103, and limiting section 103 and flaring limiting section touching position are in circular arc
Curved surface.Valve rod spring pocket is set to the other end of the body of rod.Valve rod spring is fixed on spring base, and spring base pushes against valve rod spring.Baffle
Clip is set to the outside of spring base.
The working principle of check valve is introduced below with reference to the oil pumping device with check valve.However, this does not represent list
Oil pumping device is only used for valve.In other embodiments, check valve can be used for other dresses for needing to realize oil liquid one-way flow
In setting.
When 301 backhaul of piston rod, it is evacuated in cabinet 100, for anti-return component 200, flaring limit
A lateral pressure where portion reduces, and the pressure of 101 side of oil liquid import is greater than the lateral pressure where flaring limiting section 212, should
Pressure difference makes the valve rod on anti-return component 200 mobile to 100 center of cabinet in oil liquid import 101, and valve rod spring is compressed,
It is flared the limiting section 103 that limiting section is detached from oil liquid import 101, external oil liquid enters in cabinet 100 through oil liquid import 101.
And for check valve 400, the pressure of 11 side of oil inlet is less than the pressure of 12 side of oil outlet, in core assembly 2
Flaring limiting section 212 is pressed on raised limiting section 134 in the effect of this pressure difference, and check valve 400 is closed.
And when piston rod 301 squeezes, pressure increase in cabinet 100, the valve rod in anti-return component 200 is to far from case
The direction of body 100 is mobile, and flaring limiting section is pressed in limiting section 103, and external oil liquid not can enter in cabinet 100.And for
For check valve, then on the contrary, pressure increase in cabinet 100, the side where which makes valve rod 21 to oil outlet 12 are transported
Dynamic, valve rod spring 23 is compressed, and flaring limiting section 212 is detached from retention bead portion 134, and the oil liquid in cabinet 100 is through oil inlet 11
It is flowed out in into check valve and from oil outlet 12.
In check valve provided in this embodiment, 300 movement velocity of piston component is faster, the pressure increase in cabinet 100
To be faster, entering the intracorporal oil flow of case from anti-return component 200 accordingly also will be faster；Likewise, being flowed out from check valve
The speed of oil liquid also will be faster.Check valve i.e. provided in this embodiment can realize outflow by controlling the movement velocity of piston
Oil liquid speed control.It further, is in circular arc camber at the step by the way that positive stop lug boss 134 is arranged, which exists
Closed check valve makes the entrance for flaring limiting section 212 provide guiding, while also increasing positive stop lug boss 134 and flaring limit
The contact surface in position portion 212 has better sealing；In addition, circular arc camber has fluid at this when check valve is opened
There is good mobility, reduces the flow resistance of fluid.
Check valve provided in this embodiment only allows oil liquid to flow into from 11 side of oil inlet and flow out from 12 side of oil outlet.
When oil liquid is flowed into from oil outlet side, oil pressure pushes flaring limiting section 212 mobile, and flaring limiting section 211 is pressed in limit
On boss 134, realizes the closure between oil inlet 11 and oil outlet 12, avoid the effect of the refluence of oil liquid and the bigger sealing of oil inlet quantity
Fruit will be better.
As shown in Fig. 3 and Figure 1A, valve body 1 has an oil inlet plate 14 in oil inlet end, and the middle part of oil inlet plate 14 offers assembly
Hole 141, multiple oil inlets 11 are formed in the circumferential direction of pilot hole 141, and the body of rod 211, which is worn, penetrates pilot hole 141 and under the action of oil pressure
It is moved in pilot hole 141.In this implementation, three arc grooves tangent with pilot hole 141 are uniformly provided on oil inlet plate 14,
Three arc grooves form three oil inlets 11 between the curved wall of valve chamber 13 respectively.By the way that oil inlet 11 is distributed in assembly
The circumferential direction in hole, multiple oil inlets make the oil liquid inputted in valve chamber 13 be laminar state, reduce the energy damage of turbulent flow Karman vortex street
Consumption.Further, the shape of three arc grooves on oil inlet plate and three oil inlets formed between the curved wall of valve chamber is in
The shape of similar wedge, the oil inlet 11 of this kind of shape can break up the larger bubbles generated during pump oil in oil liquid,
Damage caused by whirlpool caused by bubble is avoided, the energy consumption of oil liquid output is further decreased.In addition, the setting of oil inlet plate 14
It can be to realize pressurization at the oil inlet of check valve, improve the transmission speed of oil liquid.
Embodiment two
As shown in Fig. 6 and Fig. 6 A, check valve 400 ' provided in this embodiment includes valve body 1 ' and is set in valve body 1 '
Core assembly 2 '.With oil inlet 11 ', oil outlet 12 ' and the valve chamber 13 ' for being connected to oil inlet and oil outlet on valve body 1 '.Valve
Core assembly 2 ' includes fixing seat 21 ', valve core spring 22 ' and spool 23 '.Fixing seat 21 ' is fixed in valve chamber 13 '.Spool bullet
Fixing seat 21 ' is fixed in one end of spring 22 ', and the side where the other end to oil inlet 11 ' extends.Spool 23 ' is fixed on spool
Oil inlet 11 ' is opened or blocked to the other end of spring 22 ', spool 23 '.In this present embodiment, spool 23 ' is ball-type steel ball.So
And the present invention is not limited in any way this.In other embodiments, spool can be the plugging block of cone cell.
Likewise, this has check valve as shown in fig. 7, the present embodiment also provides a kind of oil pumping device with check valve
Oil pumping device include cabinet 100 ', anti-return component 200 ', piston component 300 ' and check valve provided in this embodiment
400'.Cabinet 100 ' has oil liquid import 101 ' and oil liquid outlet 102 ', and oil liquid outlet 102 ' is set to the radial direction of cabinet 100 '.
Anti-return component 200 ' is located in cabinet 100 ' and is set to oil liquid import 101 '.Piston component 300 ' include piston rod 301 ' and
The piston spring 303 ' being sheathed on piston rod 302 ', piston rod 301 ' protrude into cabinet 100 ' from one end of cabinet.Check valve
400 ' are set to oil liquid outlet 102 ', and the oil inlet 11 ' of check valve 400 ' is connected with the oil liquid of cabinet outlet 102 '.Yu Benshi
It applies in example, oil liquid oil inlet 101 ' is respectively arranged at the both ends of cabinet 100 ' with piston component 300 '.
The structure of anti-return component 200 is identical as the structure of core assembly of check valve in embodiment one, including valve rod, bullet
Spring abutment, valve rod spring and baffle clip.Valve rod includes the body of rod and is set to body of rod one end and tapered flaring limiting section, bar
Body protrudes into oil liquid import and moves in oil liquid import 101 ' under the action of oil pressure, raised limit in oil liquid import 101 '
Position portion 103 ', flaring limiting section are matched with limiting section 103 ', open or block oil liquid import 101 '.Spring socket sleeve is set to the body of rod
The other end；Valve rod spring is fixed on spring base, and spring base pushes against the other end that valve rod spring stop piece is set to the body of rod.
When 301 ' backhaul of piston rod, it is evacuated in cabinet 100 ', for anti-return component 200 ', flaring limit
A lateral pressure where the portion of position reduces, and the pressure of 101 ' side of oil liquid import is greater than the lateral pressure where flaring limiting section, should
Pressure difference makes the valve rod on anti-return component 200 ' internal mobile to cabinet 100 ', and flaring limiting section is detached from limiting section 103 ', outside
The oil liquid in portion enters in cabinet 100 ' through oil liquid import.And for check valve 400 ', the pressure of 11 ' side of oil inlet
Less than the pressure of 12 ' side of oil outlet, which be pressed in spool 23 ' on oil inlet 11 ', and oil liquid will not enter unidirectional
Valve.And when piston compression, the pressure in cabinet 100 ' is increasing, and anti-return component 200 ' blocks oil liquid import 101 ', cabinet
Pressure in 100 ' acts on spool 23 ' and compresses valve core spring 22 ', and valve core spring 22 ' is compressed, and band movable valve plug 23 ' is de-
From oil inlet 11 ', the oil liquid in cabinet 100 ' enters in check valve 400 ' and flows out from oil outlet 12 '.
In check valve provided in this embodiment, when the oil pressure of oil inlet side is greater than oil outlet, spool 23 ' opens oil inlet
Mouthful, pressure difference is bigger, and the speed that oil inlet 11 ' is opened also will be faster；Entire one-way valve structures are simple and have sealing effect well
Fruit.And opposite, when the oil pressure of oil outlet side is greater than oil inlet, oil pressure is bigger, and spool 23 ' will be by bigger pressure compaction
In oil inlet, sealing effect will be better.Further, in this present embodiment, the radial direction by check valve 400 ' along cabinet 100 ' is set
It sets, which avoids the influence that ball-type steel ball is self-possessed to sealing effect.
In this present embodiment, fixing seat 21 ' includes triangular base 211 ' and spring fixing portion 212 '.Triangular base
211 ' are fixed in valve chamber 13 ', and three fans are formed between three side walls of triangular base 211 ' and the valve chamber inner sidewall of arc
The oilhole (due to visual angle, not shown go out) of shape.Spring fixing portion 212 ' is formed in triangular base 211 ' and to oil inlet
Side protrusion where 11 ', valve core spring 22 ' are fixed on spring fixing portion 212 '.Triangular base 211 reduces the fuel-displaced of oil liquid
Area realizes the pressurization to output oil liquid.Further, three fan-shaped oilholes are by output in the conversion of the oil liquid of turbulent shape
For laminar flow, while also the larger bubbles in the oil liquid inputted in check valve being broken up, greatly reduces turbulent flow and larger bubbles institute
Form the energy loss of Karman vortex street.
Embodiment three
As shown in figure 8, the present embodiment and embodiment two and its variation are essentially identical, difference is, valve chamber 13 " has interior spiral shell
Line 131 ", fixing seat 21 " are in hollow column, have the outer spiral shell matched with the internal screw thread 131 " on valve chamber in fixing seat 21 "
Line 211 ", fixing seat 21 " are threadedly connected in valve chamber.Oil liquid enters valve chamber 13 " by fixing seat 21 " after oil inlet entrance,
Finally flowed out from oil outlet.
In this present embodiment, spool 23 " is the steel ball of ball-type.However, the present invention is not limited in any way this.In other realities
It applies in example, as shown in figure 9, spool can be the plugging block of taper.In addition, in other embodiments, to reduce Karman vortex street institute shape
At energy loss and increase output oil pressure, triangular shape or analogous shape can be set on side of the fixing seat close to oil outlet
Throttle block.
In conclusion check valve provided by the invention and the oil pumping device with check valve, by the valve chamber in valve body
Interior setting core assembly, core assembly open or close oil inlet according to oil pressure, realize the one-way transmission of oil liquid.The present invention provides
One-way valve structures it is simple.For sealing performance, when core assembly is composed by valve rod, valve rod spring and sealing ring
When structure, when oil liquid enters from oil inlet side, the side where the Operating valve rod to oil outlet in oil pressure is mobile, valve rod bullet
Spring is compressed, and flaring limiting section is detached from positive stop lug boss, and oil liquid enters in check valve and exports from oil outlet；And when oil liquid is from fuel-displaced
From when entering, oil pressure is acted on flaring limiting section for mouth side, which is pressed in limiting section is flared on positive stop lug boss, oil duct
It is blocked completely, there is good leakproofness.Likewise, when structure composed by core assembly is valve core spring and spool,
When oil liquid enters from oil inlet, spool is detached from oil inlet, and oil liquid enters check valve and exports from from oil outlet；When oil liquid is from out
When hydraulic fluid port side inputs, under the action of oil pressure, spool will be pressed on oil outlet and oil pressure is bigger, and the power of compression also will more
Greatly, sealing effect also will be better.
In addition, being valve rod, in structure composed by valve rod spring and sealing ring in core assembly, in the circumferential direction of pilot hole
The oil inlet of three class wedge structures as composed by the curved wall of arc groove and valve body of upper setting, the structure is not only unidirectional
Pressurization is realized on valve, while the oil inlet of class wedge structure realizes the laminar flow of oil liquid, laminar flow can well fill pump oil
It sets the larger bubbles generated in oil liquid to break up, reduces energy loss caused by the produced turbulent flow Karman vortex street of larger bubbles.
Likewise, setting fixing seat includes triangular base by the spool composed by valve core spring and spool.Triangular base
Three side walls and arc valve chamber inner sidewall between form three fan-shaped oilholes, fan-shaped oilhole had equally both been able to achieve increasing
Pressure, while can also reduce energy loss caused by turbulent flow Karman vortex street.
Although the present invention is disclosed above by preferred embodiment, however, it is not intended to limit the invention, this any known skill
Skill person can make some changes and embellishment without departing from the spirit and scope of the present invention, therefore protection scope of the present invention is worked as
Subject to claims range claimed.
Claims (10)
1. a kind of check valve characterized by comprising
Valve body, with oil inlet, oil outlet and the valve chamber for being connected to oil inlet and oil outlet on the valve body, the valve chamber includes
Oil suction chamber, connecting cavity and the oil outlet chamber being sequentially communicated, raised positive stop lug boss on the side wall of oil outlet chamber are in circular arc at step
Curved surface；
Core assembly, comprising:
Valve rod including the body of rod and is formed in body of rod one end and tapered flaring limiting section, and the body of rod, which is worn, penetrates connecting cavity and oil suction chamber,
It is flared limiting section and positive stop lug boss cooperates；
Spring base is sheathed on the other end of the body of rod and is located in oil suction chamber；
Valve rod spring is fixed on spring base and is contained in spring base and oil suction chamber between the end of connecting cavity side, spring
Seat pushes against valve rod spring；
Baffle clip is set to the outside of spring base.
2. check valve according to claim 1, which is characterized in that have baffle clip on the lateral wall of the other end of the body of rod
Slot, baffle clip are set in baffle snap-ring groove, have the flange extended to valve inner on spring base.
3. check valve according to claim 1, which is characterized in that the check valve further include be set in oil suction chamber into
Oiled-plate method, offers pilot hole in the middle part of oil inlet plate, and multiple oil inlets are formed in the circumferential direction of pilot hole, the body of rod wear penetrate pilot hole and
It is moved in pilot hole under the action of oil pressure.
4. check valve according to claim 3, which is characterized in that along the circumferential direction of pilot hole, be uniformly provided on oil inlet plate
Three arc grooves tangent with pilot hole, three arc grooves form three oil inlets between the curved wall of valve body respectively
Mouthful.
5. a kind of check valve characterized by comprising
Valve body, with oil inlet, oil outlet and the valve chamber for being connected to oil inlet and oil outlet on the valve body；
Core assembly, is set to the valve chamber, and the core assembly includes:
Fixing seat is fixed in valve chamber；
Fixing seat is fixed in valve core spring, one end, and the side where the other end to oil inlet extends；
Spool, is fixed on the other end of valve core spring, and oil inlet is opened or blocked to the spool.
6. check valve according to claim 5, which is characterized in that the spool is the plugging block of ball-type steel ball or cone cell.
7. check valve according to claim 5, which is characterized in that valve chamber has internal screw thread, and fixing seat is in hollow column,
There is the external screw thread matched with the internal screw thread on valve chamber, fixing seat is screwed in valve chamber in fixing seat.
8. check valve according to claim 5, which is characterized in that the fixing seat includes:
Triangular base is fixed in valve chamber, forms three between three side walls of triangular base and the valve chamber inner sidewall of arc
The oilhole of a sector；
Spring fixing portion, is formed in the triangular base and to the side protrusion where oil inlet, and valve core spring is fixed on spring
Fixed part.
9. a kind of oil pumping device with check valve characterized by comprising
There is oil liquid import and oil liquid to export for cabinet, cabinet, and the oil liquid outlet is set to the radial direction of cabinet；
Anti-return component in the cabinet and is set to oil liquid import；
Piston component, including piston rod and the piston spring being sheathed on piston rod, piston rod protrudes into cabinet from one end of cabinet
It is interior；
Check valve according to any one of claims 1 to 8, is set to oil liquid outlet, the oil inlet of check valve and cabinet
Oil liquid outlet is connected；
When piston component backhaul, anti-return component opens oil liquid import, and the core assembly on check valve closes oil inlet, oil liquid warp
Oil liquid import enters in cabinet；In piston press, anti-return component close oil liquid import, check valve internal valve core assembly open into
Hydraulic fluid port, the intracorporal oil liquid of case enter check valve through oil liquid outlet and oil inlet and flow out through oil outlet.
10. the oil pumping device according to claim 9 with check valve, which is characterized in that the anti-return component includes:
Valve rod, the valve rod include the body of rod and are formed in body of rod one end and tapered flaring limiting section, the body of rod protrude into oil
Liquid import is simultaneously moved in oil liquid import under the action of oil pressure, raised limiting section in oil liquid import, is flared limiting section
It is matched with limiting section；
Spring base is sheathed on the other end of the body of rod；
Valve rod spring, is fixed on spring base, and spring base pushes against valve rod spring；
Baffle clip is set to the outside of spring base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811184239.3A CN109185507A (en) | 2018-10-11 | 2018-10-11 | Check valve and oil pumping device with check valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811184239.3A CN109185507A (en) | 2018-10-11 | 2018-10-11 | Check valve and oil pumping device with check valve |
Publications (1)
| Publication Number | Publication Date |
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| CN109185507A true CN109185507A (en) | 2019-01-11 |
Family
ID=64947778
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811184239.3A Pending CN109185507A (en) | 2018-10-11 | 2018-10-11 | Check valve and oil pumping device with check valve |
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| CN (1) | CN109185507A (en) |
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