CN107143543B - A kind of hydraulic control valve group and control valve - Google Patents
A kind of hydraulic control valve group and control valve Download PDFInfo
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- CN107143543B CN107143543B CN201710289731.6A CN201710289731A CN107143543B CN 107143543 B CN107143543 B CN 107143543B CN 201710289731 A CN201710289731 A CN 201710289731A CN 107143543 B CN107143543 B CN 107143543B
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- valve
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- contraction section
- oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
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- 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
- F16K27/00—Construction of housing; Use of materials therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of hydraulic control valves, belong to hydraulic component field.Hydraulic control valve group includes control valve and overflow valve, and control valve includes：Valve body and valve deck, control valve further includes Venturi tube and relief pressure valve cartridge, Venturi tube fixation is inserted into valve body, Venturi tube includes entrance and contraction section, one end of entrance is connect with valve bonnet seal, relief pressure valve cartridge is slidably mounted in entrance, relief pressure valve cartridge is equipped with vent, entrance is equipped with into oil hole, one end of relief pressure valve cartridge seals and is arranged towards valve deck, channel is equipped in relief pressure valve cartridge, the internal diameter of contraction section is gradually reduced from the one end being connected to relief pressure valve cartridge to the other end, contraction section is communicated with the first extraction channel, first extraction channel is connected to the first control port of overflow valve, contraction section is communicated with the second extraction channel, second control port and oil outlet of second extraction channel with overflow valve are connected to.The present invention solves the problems, such as that valve group occupies a large amount of installation spaces.
Description
Technical field
The invention belongs to hydraulic component field, more particularly to a kind of hydraulic control valve group and control valve.
Background technology
In hydraulic system, it will usually be controlled executive component by the hydraulic control valve group of different function, with reality
The various actions of existing executive component.For example, when needing to control the rotating speed of executive component, it can be by pressure reducing valve, controllable throttle valve
It is connected by oil pipe with hydraulic components such as pressure compensators and is combined into a hydraulic control valve group (each hydraulic component tool
Have independent valve body), to realize that hydraulic control valve group controls the rotating speed of executive component.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems：
Since the hydraulic components such as pressure reducing valve, controllable throttle valve and pressure compensator are respectively provided with independent valve body, so
Hydraulic control valve group it is bulky, occupy a large amount of installation space.
Invention content
In order to solve the problems, such as that hydraulic control valve group occupies a large amount of installation spaces, an embodiment of the present invention provides a kind of hydraulic pressure
Control valve group and control valve.The technical solution is as follows：
On the one hand, an embodiment of the present invention provides a kind of hydraulic control valve groups, and the hydraulic control valve group includes control valve
And overflow valve, the control valve include：Valve body and valve deck mounted on described valve body one end, the valve body be equipped with oil inlet and
Oil outlet, the valve deck are equipped with control port, and the control valve further includes Venturi tube and relief pressure valve cartridge, the Venturi tube
Fixation is inserted into the valve body, and the Venturi tube includes the entrance and contraction section extended successively backwards to the valve deck, institute
The one end for stating entrance connect with the valve bonnet seal and is connected to the control port, and the relief pressure valve cartridge is slidably mounted
In the entrance, the relief pressure valve cartridge be equipped with vent, the entrance be equipped with for be connected to the vent and
The oil inlet into oil hole, one end sealing of the relief pressure valve cartridge and arranged towards the valve deck, in the relief pressure valve cartridge
Equipped with the channel for being connected to the vent and the contraction section, the internal diameter of the contraction section with the relief pressure valve cartridge by being connected to
One end be gradually reduced to the other end, the other end of the contraction section is connected to the oil outlet, the close institute of the contraction section
The position for stating relief pressure valve cartridge is communicated with the first extraction channel, the first control port of first extraction channel and the overflow valve
Connection, position of the contraction section far from the relief pressure valve cartridge is communicated with the second extraction channel, second extraction channel and institute
The second control port for stating overflow valve is connected to oil outlet, the oil inlet of the overflow valve and the control oil on the valve deck
Mouth connection.
The present invention a kind of realization method in, it is described into oil hole be kidney slot, the kidney slot is along the pressure reducing valve
The moving direction of core extends.
In another realization method of the present invention, first seal and the are equipped at intervals on the outer wall of the relief pressure valve cartridge
Two sealing elements, the first seal and the second seal are folded between the relief pressure valve cartridge and the entrance,
It the vent and described is respectively positioned between the first seal and the second seal into oil hole.
In another realization method of the present invention, the inner wall of the valve body is equipped with support rim, the Venturi tube
Outer wall be equipped with contraposition boss, the contraposition boss is shelved on the support rim.
In another realization method of the present invention, it is provided with end cap on the valve body, is set on the one side of the end cap
There are installation groove, the valve deck to be installed in the installation groove, the one side of the end cap is fixed on the valve body.
In another realization method of the present invention, the valve deck is equipped with third sealing element, the third sealing element folder
It is located between the valve deck and the installation groove.
In another realization method of the present invention, the outer wall of the entrance is equipped with the 4th sealing element and the 5th sealing
Part, the 4th sealing element and the 5th sealing element are folded between the valve body and the entrance, the oil inlet and
It is described to be respectively positioned between the 4th sealing element and the 5th sealing element into oil hole.
The present invention another realization method in, the Venturi tube further includes diffuser, the diffuser with it is described
Contraction section is connected to, and the internal diameter of the diffuser is gradually increased from the one end being connected to the contraction section to the other end.
In another realization method of the present invention, valve bottom is additionally provided on the valve body, the valve bottom is mounted on the valve
The body other end, the diffuser offset with the valve bottom, and the valve bottom is equipped with oil outlet, the oil outlet and the diffuser
Connection.
On the other hand, an embodiment of the present invention provides a kind of control valve, the control valve includes：Valve body and mounted on described
The valve deck of valve body one end, the valve body are equipped with oil inlet and oil outlet, and the valve deck is equipped with control port, the control valve
Further include Venturi tube and relief pressure valve cartridge, the Venturi tube fixation is inserted into the valve body, and the Venturi tube includes the back of the body
The entrance and contraction section extended successively to the valve deck, one end of the entrance connect with the valve bonnet seal and with it is described
Control port is connected to, and the relief pressure valve cartridge is slidably mounted in the entrance, and the relief pressure valve cartridge is equipped with vent,
The entrance be equipped with for be connected to the vent and the oil inlet into oil hole, one end of the relief pressure valve cartridge is close
It seals and is arranged towards the valve deck, the channel for being connected to the vent and the contraction section is equipped in the relief pressure valve cartridge,
The internal diameter of the contraction section is gradually reduced from the one end being connected to the relief pressure valve cartridge to the other end, the other end of the contraction section
It being connected to the oil outlet, the contraction section is communicated with the first extraction channel close to the position of the relief pressure valve cartridge, and described the
One extraction channel with the first control port of overflow valve for being connected to, position connection of the contraction section far from the relief pressure valve cartridge
Have the second extraction channel, second extraction channel for the overflow valve the second control port and oil outlet be connected to.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
After hydraulic control valve group is connected in hydraulic system, when control port does not have oil pressure, due to hydraulic system sheet
Body is with load oil pressure, so the spool of relief pressure valve cartridge is pushed into the top of entrance by the load oil pressure from oil outlet, at this time
Vent is disconnected with into oil hole, and the hydraulic oil of oil inlet can not import；Oil pressure rises and is more than load oil at control port
When pressure, relief pressure valve cartridge moves downward, until vent is connected with into oil hole beginning so that the hydraulic oil of oil inlet is successively
Relief pressure valve cartridge, entrance and contraction section are imported, and is finally exported by oil outlet, due into partly being led between oil hole and vent
It is logical, so decompression (effect for realizing pressure reducing valve) can be played the role of, as the pressure at control port increases, pressure reducing valve
Core constantly moves downward so that the more open the more big into the aperture between oil hole and vent, due to contraction section internal diameter by with subtract
One end of pressure valve core connection is gradually reduced to the other end, so the pressure at entrance constantly rises, so that relief pressure valve cartridge
The pressure at control port is overcome to move upwards, so that become smaller into the aperture between oil hole and vent, it is dynamic to be formed
State balances (effect for realizing pressure compensator)；When pressure at control port further increases, contraction section is far from decompression
Difference of the oil pressure and contraction section of the position of spool between the oil pressure of the position of relief pressure valve cartridge also constantly increases therewith so that
The oil inlet and oil outlet of overflow valve are connected, into the section hydraulic oil at control port by contraction section overflow to oil outlet,
To reduce the oil pressure at control port, being equivalent to the upper limit value for the flow for limiting the output of hydraulic control valve group (realizes
The effect of controllable throttle valve).Since all parts in control valve are all integrated in valve body, to solve hydraulic control valve group
The problem of occupying a large amount of installation spaces.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the sectional view of control valve provided in an embodiment of the present invention；
Fig. 2 is the hydraulic schematic diagram of hydraulic control valve group provided in an embodiment of the present invention；
Each symbolic indication meaning is as follows in figure：
1- valve bodies, 11- support rims, 12- end caps, 13- valves bottom, 14- supporting racks, 2- valve decks, 21- control ports, 3- into
Hydraulic fluid port, 4- oil outlets, 5- Venturi tubes, 51- entrances, 52- contraction sections, 53- is into oil hole, the first extraction channels of 54-, 55-
Second extraction channel, 56- oil feed grooves, 57- contraposition boss, 58- diffusers, 6- relief pressure valve cartridges, 61- vents, the channels 62-,
7- overflow valves, 81- first seals, 82- second seals, 83- third sealing elements, the 4th sealing elements of 84-, 85- the 5th are sealed
Part.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
An embodiment of the present invention provides a kind of hydraulic control valve groups, as shown in Figure 1, the hydraulic control valve group includes control valve
With overflow valve 7 (referring to Fig. 2), control valve includes valve body 1 and the valve deck 2 mounted on 1 one end of valve body, and valve body is equipped with oil inlet 3
With oil outlet 4, valve deck 2 is equipped with control port 21, and control valve further includes Venturi tube 5 and relief pressure valve cartridge 6, and Venturi tube 5 is solid
Surely it is inserted into valve body 1, Venturi tube 5 includes the entrance 51 and contraction section 52 that valve deck 2 extends successively backwards, entrance 51
One end is tightly connected with valve deck 2 and is connected to control port 21, and relief pressure valve cartridge 6 is slidably mounted in entrance 51, decompression
Spool 6 is equipped with vent 61, entrance 51 be equipped with for be connected to vent 61 and oil inlet 3 into oil hole 53, decompression
One end of spool 6 seals and is arranged towards valve deck 2, is equipped in relief pressure valve cartridge 6 for being connected to the logical of vent 61 and contraction section 52
The internal diameter in road 62, contraction section 52 is gradually reduced from the one end being connected to relief pressure valve cartridge 6 to the other end, the other end of contraction section 52 with
Oil outlet 4 is connected to, and the position of the close relief pressure valve cartridge 6 of contraction section 52 is communicated with the first extraction channel 54, the first extraction channel 54
It is connected to (referring to Fig. 2) with the first control port of overflow valve 7, position of the contraction section 52 far from relief pressure valve cartridge 6 is communicated with second and draws
Go out channel 55, second control port and oil outlet of second extraction channel 55 with overflow valve 7 are connected to, the oil inlet of overflow valve 7 with
Control port 21 on valve deck 2 is connected to.
After hydraulic control valve is connected in hydraulic system, when control port 21 does not have oil pressure, due to hydraulic system sheet
Body is with load oil pressure, so the spool of relief pressure valve cartridge 6 is pushed into the top of entrance 51 by the load oil pressure from oil outlet 4,
Vent 61 is disconnected with into oil hole 53 at this time, and the hydraulic oil of oil inlet 3 can not import；Oil pressure rises simultaneously at control port 21
When more than load oil pressure, relief pressure valve cartridge 6 moves downward, until vent 61 is connected with into 53 beginning of oil hole so that into
The hydraulic oil of hydraulic fluid port 3 imports relief pressure valve cartridge 6, entrance 51 and contraction section 52 successively, and is finally exported by oil outlet 4, due into
It is partially ON between oil hole 53 and vent 61, so decompression (effect for realizing pressure reducing valve) can be played the role of, with
It the pressure at control port 21 to increase, relief pressure valve cartridge 6 constantly moves downward so that between oil hole 53 and vent 61
Aperture the more is opened the more big, since the internal diameter of contraction section 52 is gradually reduced from the one end being connected to relief pressure valve cartridge 6 to the other end, so entering
Pressure at mouth section 51 constantly rises, so that relief pressure valve cartridge 6 overcomes the pressure at control port 21 to move upwards, and then makes
It obtains and becomes smaller into the aperture between oil hole 53 and vent 61, to form dynamic equilibrium (effect for realizing pressure compensator)；
When pressure at control port 21 further increases, oil pressure and the contraction section 52 of position of the contraction section 52 far from relief pressure valve cartridge 6
Difference between the oil pressure of the position of relief pressure valve cartridge 6 also constantly increases therewith so that the oil inlet and oil outlet of overflow valve 7
Conducting, into the section hydraulic oil at control port 21 by 52 overflow of contraction section to oil outlet 4, to reduce control port
Oil pressure at 21, being equivalent to the upper limit value for the flow for limiting the output of hydraulic control valve group (realizes the work of controllable throttle valve
With).Since all parts in control valve are all integrated in valve body 1, a large amount of installations are occupied to solve hydraulic control valve group
The problem of space.
In the present embodiment, control valve and overflow valve can be two independent Hydraulic Elements (having independent valve body),
Control valve can be connected with overflow valve by hydraulic oil pipe at this time；Control valve and overflow valve may be integral structure, that is, control
Valve and overflow valve processed integrate, so that being not required to the connection of hydraulic oil pipe between control valve and overflow valve.
The oil pressure Yu contraction section 52 of position of the contraction section 52 far from relief pressure valve cartridge 6 be following is a brief introduction of close to pressure reducing valve
The principle of the upper limit value of the flow of difference limitation hydraulic control valve group output between the oil pressure of the position of core 6：
Assuming that the flow of hydraulic system is Q, the restriction coefficient of Venturi tube 5 is Cd2, the orifice size of Venturi tube 5 is
The oil pressure of A, position of the contraction section 52 far from relief pressure valve cartridge 6 are PA, oil pressure of the contraction section 52 close to the position of spool is P1, hydraulic pressure
The density of oil is ρ, and following formula can be obtained by throttling theory：
Due to Cd2, A and ρ be definite value, so the oil pressure of position of the contraction section 52 far from relief pressure valve cartridge 6 and contraction section 52
Therefore difference between the oil pressure of the position of relief pressure valve cartridge 6, is limited and is shunk as the flow of hydraulic system increases and increases
Difference of the oil pressure and contraction section 52 of 52 positions far from relief pressure valve cartridge 6 of section between the oil pressure of the position of relief pressure valve cartridge 6 was both
The flow rate upper limit value that hydraulic system can be limited defines the upper limit value of the flow of hydraulic control valve group output.
It is kidney slot into oil hole 53, kidney slot is along the side of movement of relief pressure valve cartridge 6 in the present embodiment referring again to Fig. 1
To extension.
In above-mentioned realization method vent 61 can be diameter with into the identical circular hole of oil hole 53, with relief pressure valve cartridge
Into oil hole 53 and vent 61 relative motion occurs therewith for 6 movement, to change into oil hole 53 and vent 61 it
Between opening size, due into oil hole 53 be kidney slot, the realization oil inlet that can more stablize.
Specifically, oil inlet 3 there are two being arranged on valve body 1, entrance 51 and relief pressure valve cartridge 6 are cylinder knot
Structure, can be provided with oil feed groove 56 on the internal perisporium of entrance 51, it is multiple can be around the center of entrance 51 into oil hole 53
Axis is arranged on the bottom surface of oil feed groove 56, and multiple vents 61 can be arranged around the central shaft of relief pressure valve cartridge 6, each vent
61 are connected to by oil feed groove 56 with into oil hole 53, so that each vent 61 can pass through 56 He of oil feed groove
It realizes into oil hole 53 and is connected to two oil inlets 3.
In the present embodiment, it is equipped at intervals with first seal 81 and second seal 82 on the outer wall of relief pressure valve cartridge 6, first
Sealing element 81 and second seal 82 are folded between relief pressure valve cartridge 6 and entrance 51, vent 61 and equal into oil hole 53
Between first seal 81 and second seal 82.First seal 81 and second seal 82 can be sealing ring, will
First seal 81 and second seal 82 are separately positioned on vent 61 and into the both sides of oil hole 53, can be to avoid vent
It 61 and is leaked during relief pressure valve cartridge 6 moves into the hydraulic oil at oil hole 53.
In the present embodiment, the inner wall of valve body 1 is equipped with support rim 11, and the outer wall of Venturi tube 5 is convex equipped with aligning
Platform 57, contraposition boss 57 are shelved on support rim 11, thus by the cooperation between support rim 11 and contraposition boss 57, it is real
Support of the valve body 1 to Venturi tube 5 is showed.
In above-mentioned realization method, since control valve is placed vertically, so can be not required between Venturi tube 5 and valve body 1
It is fixedly connected, Venturi tube 5 can directly rest on support rim 11, to coordinate with valve deck 2, by Venturi tube 5
Geometrical clamp is mounted between valve deck 2 and support rim 11.
In the present embodiment, end cap 12 is provided on valve body 1, the one side of end cap 12 is equipped with installation groove, and valve deck 2 blocks
In installation groove, the one side of end cap 12 is fixed on valve body 1.
Specifically, end cap 12 can be bolted on valve body 1, and installation groove matches with valve deck 2, on valve deck 2
It can be provided with the mounting flange plate to match with entrance 51, in assembly, can first be put valve deck 2 by mounting flange plate
It sets in entrance 51, then end cap 12 is located on valve deck 2 so that installation groove matches with valve deck 2, finally by bolt
End cap 12 is fixed on valve body 1, to realize the installation of end cap 12 and valve deck 2.
Specifically, valve deck 2 is equipped with third sealing element 83, and third sealing element 83 is folded between valve deck 2 and installation groove,
So as to avoid the hydraulic fluid leak of control port 21.
In the present embodiment, the outer wall of entrance 51 is equipped with the 4th sealing element 84 and the 5th sealing element 85, the 4th sealing
Part 84 and the 5th sealing element 85 are folded between valve body 1 and entrance 51, oil inlet 3 and into oil hole 53 be respectively positioned on the 4th sealing
Between part 84 and the 5th sealing element 85.4th sealing element 84 and the 5th sealing element 85 can be sealing ring, by the 4th sealing element 84
It is separately positioned on oil inlet 3 with the 5th sealing element 85 and into the both sides of oil hole 53, it can be to avoid oil inlet 3 and into oil hole 53
The hydraulic oil at place leaks.
In the present embodiment, Venturi tube 5 further includes diffuser, and diffuser 58 is connected to contraction section 52, diffuser 58
Internal diameter is gradually increased from the one end being connected to contraction section 52 to the other end.
In above-mentioned realization method, diffuser 58 can reduce the flow velocity of the hydraulic oil ramped up in contraction section 52, subtract
Small turbulivity, controls head loss.
In the present embodiment, it is additionally provided with valve bottom 13 on valve body 1, valve bottom 13 is additionally provided on valve body 1, valve bottom 13 is mounted on valve body
1 other end, diffuser 58 offset with valve bottom 13, and oil outlet 4 is arranged on valve bottom 13, and oil outlet 4 is connected to diffuser 58, valve bottom
13 play the role of supporting Venturi tube 5.
Specifically, valve bottom 13 is equipped with supporting rack 14, and diffuser 58 is installed together by supporting rack 14 and valve bottom 13.
More specifically, supporting rack 14 may include the first mounting cylinder, the second mounting cylinder and mounting plate, the first mounting cylinder and
Two mounting cylinders are coaxially fixed on the two opposite sides of mounting plate respectively, and diffuser 58 is inserted into the first mounting cylinder, and the first installation
Collet chuck is located between diffuser 58 and valve body 1, and the position of oil outlet 4 is corresponded on valve bottom 13 and can be equipped with positioning protrusion, convex
It rises and is inserted into the second mounting cylinder.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of hydraulic control valve group, the hydraulic control valve group includes control valve and overflow valve, and the control valve includes：Valve body
With the valve deck mounted on described valve body one end, the valve body is equipped with oil inlet and oil outlet, and the valve deck is equipped with control oil
Mouthful, which is characterized in that the control valve further includes Venturi tube and relief pressure valve cartridge, and the Venturi tube fixation is inserted into the valve
In vivo, the Venturi tube includes the entrance and contraction section extended successively backwards to the valve deck, one end of the entrance with
The valve bonnet seal is connected and is connected to the control port, and the relief pressure valve cartridge is slidably mounted in the entrance,
The relief pressure valve cartridge is equipped with vent, and the entrance is equipped with the oil inlet for being connected to the vent and the oil inlet
One end of through-hole, the relief pressure valve cartridge seals and is arranged towards the valve deck, is equipped in the relief pressure valve cartridge described for being connected to
The channel of vent and the contraction section, the internal diameter of the contraction section from one end for being connected to the relief pressure valve cartridge to the other end by
Decrescence small, the other end of the contraction section is connected to the oil outlet, the position of the close relief pressure valve cartridge of the contraction section
It is communicated with the first extraction channel, first extraction channel is connected to the first control port of the overflow valve, the contraction section
Position far from the relief pressure valve cartridge is communicated with the second extraction channel, the second control of second extraction channel and the overflow valve
Liquefaction mouth is connected to oil outlet, and the oil inlet of the overflow valve is connected to the control port on the valve deck.
2. hydraulic control valve group according to claim 1, which is characterized in that it is described into oil hole be kidney slot, the waist
Shape hole extends along the moving direction of the relief pressure valve cartridge.
3. hydraulic control valve group according to claim 1, which is characterized in that be equipped at intervals on the outer wall of the relief pressure valve cartridge
First seal and second seal, the first seal and the second seal are folded in the relief pressure valve cartridge and institute
Between stating entrance, the vent and it is described into oil hole be respectively positioned on the first seal and the second seal it
Between.
4. hydraulic control valve group according to claim 1, which is characterized in that it is convex that the inner wall of the valve body is equipped with support
The outer wall of platform, the Venturi tube is equipped with contraposition boss, and the contraposition boss is shelved on the support rim.
5. hydraulic control valve group according to claim 1, which is characterized in that be provided with end cap, the end on the valve body
The one side of lid is equipped with installation groove, and the valve deck is installed in the installation groove, and the one side of the end cap is fixed on
On the valve body.
6. hydraulic control valve group according to claim 5, which is characterized in that the valve deck is equipped with third sealing element, institute
Third sealing element is stated to be folded between the valve deck and the installation groove.
7. according to claim 1-6 any one of them hydraulic control valve groups, which is characterized in that set on the outer wall of the entrance
Have the 4th sealing element and the 5th sealing element, the 4th sealing element and the 5th sealing element be folded in the valve body and it is described enter
Between mouthful section, the oil inlet and described it is respectively positioned between the 4th sealing element and the 5th sealing element into oil hole.
8. according to claim 1-6 any one of them hydraulic control valve groups, which is characterized in that the Venturi tube further includes expanding
Section is dissipated, the diffuser is connected to the contraction section, and the internal diameter of the diffuser is from one end for being connected to the contraction section to another
One end gradually increases.
9. hydraulic control valve group according to claim 8, which is characterized in that be additionally provided with valve bottom, the valve on the valve body
Bottom is mounted on the valve body other end, and the diffuser offsets with the valve bottom, and the oil outlet is arranged on the valve bottom, institute
Oil outlet is stated to be connected to the diffuser.
10. a kind of control valve, the control valve include：Valve body and valve deck mounted on described valve body one end are set on the valve body
Have an oil inlet and oil outlet, the valve deck is equipped with control port, which is characterized in that the control valve further include Venturi tube and
Relief pressure valve cartridge, the Venturi tube fixation are inserted into the valve body, and the Venturi tube includes prolonging successively backwards to the valve deck
The entrance and contraction section stretched, one end of the entrance connect with the valve bonnet seal and are connected to the control port, institute
It states relief pressure valve cartridge to be slidably mounted in the entrance, the relief pressure valve cartridge is equipped with vent, sets on the entrance
Be useful for being connected to the vent and the oil inlet into oil hole, one end sealing of the relief pressure valve cartridge and towards the valve
Drop cloth is set, and is equipped with the channel for being connected to the vent and the contraction section in the relief pressure valve cartridge, the contraction section it is interior
Diameter is gradually reduced from the one end being connected to the relief pressure valve cartridge to the other end, and the other end of the contraction section connects with the oil outlet
Logical, the contraction section is communicated with the first extraction channel close to the position of the relief pressure valve cartridge, and first extraction channel is used for
It is connected to the first control port of overflow valve, it is logical that position of the contraction section far from the relief pressure valve cartridge is communicated with the second extraction
Road, second extraction channel for the overflow valve the second control port and oil outlet be connected to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710289731.6A CN107143543B (en) | 2017-04-27 | 2017-04-27 | A kind of hydraulic control valve group and control valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710289731.6A CN107143543B (en) | 2017-04-27 | 2017-04-27 | A kind of hydraulic control valve group and control valve |
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| CN107143543A CN107143543A (en) | 2017-09-08 |
| CN107143543B true CN107143543B (en) | 2018-11-09 |
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| CN201710289731.6A Active CN107143543B (en) | 2017-04-27 | 2017-04-27 | A kind of hydraulic control valve group and control valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194440B (en) * | 2017-11-14 | 2020-03-31 | 武汉船用机械有限责任公司 | Hydraulic speed regulating valve and hydraulic system |
| CN109779998B (en) * | 2017-11-14 | 2023-11-24 | 浙江三尚智迪科技有限公司 | Torque distribution valve and wheel traveling hydraulic control system |
| CN108223867A (en) * | 2017-12-27 | 2018-06-29 | 杭州春江阀门有限公司 | A kind of Depressure valve |
| CN111577690A (en) * | 2020-04-01 | 2020-08-25 | 武汉船用机械有限责任公司 | Hydraulic control valve group |
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| CN103244725A (en) * | 2013-05-25 | 2013-08-14 | 铜陵市三圆特种铸造有限责任公司 | Pressure reduction cavity structure for high-flow balanced pressure regulating valve |
| CN103671321A (en) * | 2013-11-25 | 2014-03-26 | 武汉船用机械有限责任公司 | Hydraulic control valve |
| CN204226668U (en) * | 2014-11-06 | 2015-03-25 | 艾坦姆流体控制技术（北京）有限公司 | Modulating valve |
| CN104595268A (en) * | 2014-12-02 | 2015-05-06 | 武汉船用机械有限责任公司 | Pilot type integrated hydraulic governor control valve |
-
2017
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|---|---|---|---|---|
| IT1151291B (en) * | 1982-06-07 | 1986-12-17 | Univer Srl | VALVE DEVICE FOR GRADUAL PRESSURE OF PNEUMATIC SYSTEMS |
| US5447174A (en) * | 1993-08-02 | 1995-09-05 | Hydrolux S.A.R.L. | Pilot stage for pressure control valves |
| RU2068139C1 (en) * | 1994-05-31 | 1996-10-20 | Акционерное общество "ЭНТЭК" | Control valve |
| CN103244725A (en) * | 2013-05-25 | 2013-08-14 | 铜陵市三圆特种铸造有限责任公司 | Pressure reduction cavity structure for high-flow balanced pressure regulating valve |
| CN103671321A (en) * | 2013-11-25 | 2014-03-26 | 武汉船用机械有限责任公司 | Hydraulic control valve |
| CN204226668U (en) * | 2014-11-06 | 2015-03-25 | 艾坦姆流体控制技术（北京）有限公司 | Modulating valve |
| CN104595268A (en) * | 2014-12-02 | 2015-05-06 | 武汉船用机械有限责任公司 | Pilot type integrated hydraulic governor control valve |
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|---|---|
| CN107143543A (en) | 2017-09-08 |
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