CN106763899A - Pressure valve and the hydraulic system with it - Google Patents
Pressure valve and the hydraulic system with it Download PDFInfo
- Publication number
- CN106763899A CN106763899A CN201611078387.8A CN201611078387A CN106763899A CN 106763899 A CN106763899 A CN 106763899A CN 201611078387 A CN201611078387 A CN 201611078387A CN 106763899 A CN106763899 A CN 106763899A
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- Prior art keywords
- valve
- accommodating chamber
- valve element
- flow channels
- pressure
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/003—Systems with load-holding valves
-
- 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
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
-
- 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
- F15B13/029—Counterbalance valves
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a kind of pressure valve and the hydraulic system with it.Wherein, pressure valve includes valve body, with elastic component accommodating chamber, the first and second accommodating chambers, first, second, and third flow channels is provided with the cavity wall of the first accommodating chamber；Elastic component is arranged in elastic component accommodating chamber；Valve element is movably disposed in valve element accommodating chamber and is supported with elastic component, valve element has first, second, and third position, when valve element is located at first position, valve element blocks the first flow channels, so that the first accommodating chamber is not connected mutually with the second accommodating chamber, second flow channels are connected with the second accommodating chamber, and when valve element is located at the second place, valve element blocks first and second flow channels.When valve element is located at three positions, first and second accommodating chamber is connected by the 3rd flow channels, and the second flow channels are blocked by valve element.The problem of the control hardly possible that can efficiently solve the system oil pressure height in the case of without external world's power supply of the prior art that applies the technical scheme of the present invention.
Description
Technical field
The present invention relates to Hydraulic Field, in particular to a kind of pressure valve and the hydraulic system with it.
Background technology
At present, in the pressure-retaining system of hydraulic system, system oil pressure height is generally realized using pump/magnetic valve combination
Control, the control accuracy of said structure is high, and control effect is good, but said structure needs power system to be supplied for magnetic valve
Electricity.When hydraulic system to apply in the wild or exclusion area environment when (under without any extraneous operating mode powered),
The cut-out of oil pressure cannot be just controlled using magnetic valve and is turned on.
The content of the invention
It is a primary object of the present invention to provide a kind of pressure valve and hydraulic system with it, to solve in the prior art
The difficult problem of the control of system oil pressure height in the case of without external world's power supply.
To achieve these goals, according to an aspect of the invention, there is provided a kind of pressure valve, including：Valve body, has
Mutual disconnected elastic component accommodating chamber and valve element accommodating chamber, valve element accommodating chamber include the first accommodating chamber and hold positioned at first
Receive chamber close elastic component accommodating chamber the second accommodating chamber, fluid enters in valve body from the import of the first accommodating chamber, the of valve body
The first flow channels, the second flow channels and the 3rd flow channels, the second flow channels are provided with the cavity wall of one accommodating chamber
Positioned at the side of the close elastic component accommodating chamber of the first flow channels, the 3rd flow channels connect the first flow channels and hold with second
Receive chamber, the second flow channels are not connected mutually with the first flow channels and the 3rd flow channels；Elastic component, is arranged on elastic component appearance
Receive in chamber；Valve element, is movably disposed in valve element accommodating chamber, and the first end of valve element is located in the first accommodating chamber, and the of valve element
Two ends are stretched into elastic component accommodating chamber and are supported with elastic component, and valve element has first position, the second place and the 3rd position, works as valve
When core is located at first position, valve element blocks the first flow channels, so that the first accommodating chamber is not connected mutually with the second accommodating chamber, second
Flow channels are connected with the second accommodating chamber, and when valve element is located at the second place, valve element blocks the first flow channels and the second excessively stream
Passage, when valve element is located at three positions, the first accommodating chamber is connected with the second accommodating chamber by the 3rd flow channels, the second excessively stream
Passage is blocked by valve element, a part of fluid from the first flow channels outflow, remaining fluid flow into the second accommodating chamber, wherein, when
When the pressure of fluid gradually increases, valve element is gradually moved to the second place from first position, and when the pressure of fluid, to reach first pre-
During constant-pressure, valve element produces phase step type displacement, and valve element is moved quickly to the 3rd position from the second place, when fluid pressure gradually
During reduction, valve element is gradually moved to the second place from the 3rd position, and when the pressure of fluid reaches the second predetermined pressure, valve element is produced
Raw phase step type displacement, valve element is moved quickly to first position from the second place.
Further, valve element is included from valve element accommodating chamber to the first post set gradually on the direction of elastic component accommodating chamber
Section, the second shell of column and the 3rd shell of column, the first shell of column are movably disposed in the first accommodating chamber, the second shell of column and the 3rd post
Section is movably disposed in the second accommodating chamber, the sectional area S1 of the first shell of column, the sectional area S2 of the second shell of column and the 3rd shell of column
Sectional area S3 between relation be S1 ＜ S3 ＜ S2.
Further, between the first shell of column includes coordinating section and being arranged on the one end for coordinating section to be close to elastic component accommodating chamber
Gap section, coordinates section to be adapted with the cavity wall of the first accommodating chamber, has gap, second between gap section and the cavity wall of the first accommodating chamber
Flow channels are connected by gap with the second accommodating chamber.
Further, the first shell of column is cylindrical section, and the relation between the diameter d1 of cooperation section and the diameter d2 of gap section is
D1 ＞ d2.
Further, the 3rd shell of column is cylindrical section, coordinates the relation between the diameter d1 and the diameter D3 of the 3rd shell of column of section
It is d1/D3 between 0.85-0.99.
Further, the first flow channels are the first flowing hole, and the second flow channels are the second flowing hole, coordinate the length of section
Degree equal to the first flowing hole the one end away from elastic component between one end near elastic component of the second flowing hole along valve body
Distance on axis direction.
Further, the 3rd flow channels are the 3rd flowing hole, and the 3rd flowing hole extends along the axis direction of valve body, the 3rd
One end of flowing hole is connected with the first flowing hole, and the other end of the 3rd flowing hole is connected with the second accommodating chamber.
Further, pressure valve also includes valve pocket, and valve pocket is arranged between elastic component accommodating chamber and valve element accommodating chamber, valve
Put with hole is avoided, the second end of valve element passes from avoidance hole, and is supported with elastic component.
Further, it is the oil film seal of plunger pattern between valve element and valve pocket.
Further, valve body includes the first valve body and the second valve body that are connected with each other, and the inner chamber of the first valve body forms elasticity
Part accommodating chamber, the inner chamber of the second valve body forms valve element accommodating chamber, and valve pocket is folded between the first valve body and the second valve body, the second valve
Oil leak hole is provided with body, the first end of oil leak hole is connected with the second flow channels, the second end of oil leak hole is located at the second valve body
With the junction of valve pocket, with prevent fluid enter elastic component accommodating chamber in.
Further, elastic component includes spring and guide part, and guide part is arranged on spring near one end of valve element, elasticity
Part accommodating chamber includes directed cavity and spring accommodating chamber, and spring is arranged in spring accommodating chamber, and guide part is movably disposed at
It is adapted in directed cavity and with the cavity wall of directed cavity.
Further, valve body and valve element are the oil film seal of plunger pattern.
Further, valve element is by Surface hardening treatment.
According to another aspect of the present invention, there is provided a kind of hydraulic system, including：Air pump converter, with air pump entrance
Gentle pump discharge, air pump entrance is connected with source of the gas；Switch valve, is arranged between air pump converter and source of the gas, is set on switch valve
There is fluid intake, switch valve has opening and closed mode, to have fluid to enter fashionable when fluid intake, switch valve is in closes
State, the passage between switch valve cut-out air pump entrance and source of the gas, when fluid intake, not have fluid to enter fashionable, and switch valve is in and opens
When opening state, air pump entrance is connected with source of the gas；Pressure valve, pressure valve is above-mentioned pressure valve, the first accommodating chamber of pressure valve
Import is connected with air pump outlet, and the first flow channels of pressure valve are connected with the fluid intake of switch valve, the second mistake of pressure valve
Circulation road is connected with the fuel tank of hydraulic system.
Apply the technical scheme of the present invention, when the pressure of fluid for entering the first accommodating chamber gradually increases, valve element is from the
One position is gradually moved to the second place, and when the pressure of fluid reaches the first predetermined pressure, the first flow channels are held with first
Receive chamber connection, valve element is moved quickly to the 3rd position from the second place, and valve element produces phase step type displacement.At this moment the pressure meeting of fluid
Power with elastic component keeps balance.Because the second flow channels are not connected with the first flow channels, while the second flow channels quilt
Valve element is blocked, therefore valve element can be maintained on the position of setting under the pressure of fluid.And when the fluid into the first accommodating chamber
Pressure when being gradually reduced, valve element is gradually moved to the second place from the 3rd position.When the pressure of fluid reaches the second pre- level pressure
During power, the second flow channels are opened, and the fluid in the second accommodating chamber flows out from the second flow channels so that in the second accommodating chamber
Pressure dump falls, and valve element is moved quickly to the due to producing phase step type displacement in the presence of elastic component restoring force by the second place
One position.Therefore said structure ensure that the pressure of liquid in system be maintained at the first predetermined pressure and the second predetermined pressure it
Between.And due to phase step type displacement, therefore above-mentioned knot can be produced when valve element is from the second place to the 3rd position or first position
Control accuracy when structure causes that high-low pressure is controlled is higher.In addition, in said structure, what the power of valve element was leaned on is the liquid in valve body
Body, therefore power is provided without external power supply.When hydraulic system will apply in the wild or exclusion area environment when (
Under there is no an operating mode of any extraneous power supply), the cut-out and conducting of fluid pressure can be still controlled using above-mentioned pressure valve, solution
Determine the difficult problem of control of the system oil pressure height in the case of without external world's power supply of the prior art.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings：
Vertical profile structural representation when Fig. 1 shows the valve element of the embodiment of pressure valve of the invention in first position
Figure；
Valve element is in when Fig. 2 shows that the valve element of the pressure valve of Fig. 1 is moved from the first position to the 3rd position
Vertical profile structural representation during the second place；
Vertical profile structural representation when Fig. 3 shows the valve element of the pressure valve of Fig. 1 in three positions；
Valve element is in when Fig. 4 shows that the valve element of the pressure valve of Fig. 1 is moved from the 3rd position to the first position
Vertical profile structural representation during the second place；And
Fig. 5 shows the system diagram of hydraulic system of the invention.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, valve body；10a, the first valve body；10b, the second valve body；11st, elastic component accommodating chamber；111st, directed cavity；112nd, spring
Accommodating chamber；12nd, valve element accommodating chamber；121st, the first accommodating chamber；121a, import；1211st, the first flow channels；1212nd, the second excessively stream
Passage；1213rd, the 3rd flow channels；122nd, the second accommodating chamber；13rd, oil leak hole；20th, elastic component；21st, spring；22nd, guide part；
30th, valve element；31st, the first shell of column；311st, section is coordinated；312nd, gap section；32nd, the second shell of column；33rd, the 3rd shell of column；40th, valve pocket；50、
Air pump converter；51st, air pump entrance；52nd, air pump outlet；60th, source of the gas；70th, switch valve；71st, fluid intake；80th, fuel tank；90、
Screw；100th, sealing ring.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figures 1 to 4, the pressure valve of the present embodiment includes：Valve body 10, elastic component 20 and valve element 30.Wherein, valve
Body 10 has mutual disconnected elastic component accommodating chamber 11 and valve element accommodating chamber 12, and valve element accommodating chamber 12 includes the first accommodating chamber
121 and the second accommodating chamber 122 of the close elastic component accommodating chamber 11 positioned at the first accommodating chamber 121, fluid is from the first accommodating chamber
121 import 121a enters in valve body 10, and the first flow channels are provided with the cavity wall of the first accommodating chamber 121 of valve body 10
1211st, the second flow channels 1212 and the 3rd flow channels 1213, the second flow channels 1212 are located at the first flow channels
The side of 1211 close elastic component accommodating chamber 11, first flow channels of the connection of the 3rd flow channels 1,213 1211 and second are accommodated
Chamber 122, the second flow channels 1212 are not connected mutually with the first flow channels 1211 and the 3rd flow channels 1213；Elastic component 20
It is arranged in elastic component accommodating chamber 11；Valve element 30 is movably disposed in valve element accommodating chamber 12, and the first end of valve element 30 is located at
In first accommodating chamber 121, the second end of valve element 30 is stretched into elastic component accommodating chamber 11 and is supported with elastic component 20, and valve element 30 has
First position, the second place and the 3rd position, when valve element 30 is located at first position, valve element 30 blocks the first flow channels
1211, so that the first accommodating chamber 121 is not connected mutually with the second accommodating chamber 122, the second flow channels 1212 and the second accommodating chamber 122
Connection.When valve element 30 is located at the second place, valve element 30 closure the first flow channels 1211 and the second flow channels 1212.Work as valve
When core 30 is located at three positions, the first accommodating chamber 121 is connected with the second accommodating chamber 122 by the 3rd flow channels 1213, and second
Flow channels 1212 are blocked by valve element 30, and a part of fluid flows out from the first flow channels 1211, and remaining fluid flows into second
Accommodating chamber 122.When the pressure of fluid gradually increases, valve element 30 is gradually moved to the second place from first position, when fluid
When pressure reaches the first predetermined pressure, valve element 30 produces phase step type displacement, and valve element 30 is moved quickly to the 3rd from the second place
Put, when the pressure of fluid is gradually reduced, valve element 30 is gradually moved to the second place from the 3rd position, when the pressure of fluid reaches
During the second predetermined pressure, valve element 30 produces phase step type displacement, and valve element 30 is moved quickly to first position from the second place.
Using the technical scheme of the present embodiment, when the pressure of the fluid into the first accommodating chamber 121 gradually increases, valve element
30 are gradually moved to the second place from first position, when the pressure of fluid reaches the first predetermined pressure, the first flow channels
1211 connect with the first accommodating chamber 121, and valve element 30 is moved quickly to the 3rd position from the second place, and valve element 30 produces phase step type position
Move.At this moment the pressure of fluid can keep balance with the power of elastic component 20.Do not crossed with first due to the second flow channels 1212 and circulated
Road 1211 is connected, while the second flow channels 1212 are blocked by valve element 30, therefore valve element 30 can be maintained under the pressure of fluid
On the position of setting.And when the pressure of fluid for entering the first accommodating chamber 121 is gradually reduced, valve element 30 from the 3rd position gradually
It is moved to the second place.When the pressure of fluid reaches the second predetermined pressure, the second flow channels 1212 are opened, the second accommodating chamber
Fluid in 122 flows out from the second flow channels 1212 so that the pressure in the second accommodating chamber 122 is let out and removed, valve element 30 due to
Phase step type displacement is produced in the presence of the restoring force of elastic component 20, first position is moved quickly to by the second place.Therefore it is above-mentioned
Structure ensure that the pressure of liquid in system is maintained between the first predetermined pressure and the second predetermined pressure.And due to valve element
30 from the second place to the 3rd position or first position when can produce phase step type displacement, therefore said structure enables pressure valve
Enough it is in the packing state of No leakage so that control accuracy when high-low pressure is controlled is higher.In addition, in said structure, valve element
What 30 power was leaned on is the liquid in valve body, therefore provides power without external power supply.When hydraulic system will be using in the wild
Or exclusion area environment when (under the operating mode without any extraneous power supply), can still be controlled using above-mentioned pressure valve
The cut-out and conducting of fluid pressure processed, solve the system oil pressure height in the case of without extraneous power supply of the prior art
Control difficult problem.
As shown in Figures 1 to 4, in the present embodiment, valve element 30 is included from valve element accommodating chamber 12 to elastic component accommodating chamber 11
Direction on the first shell of column 31, the second shell of column 32 and the 3rd shell of column 33 that set gradually, the first shell of column 31 is movably disposed
In the first accommodating chamber 121, the second shell of column 32 and the 3rd shell of column 33 are movably disposed in the second accommodating chamber 122, and first
The sectional area S of shell of column 311, the second shell of column 32 sectional area S2With the sectional area S of the 3rd shell of column 333Between relation be S1＜ S3＜
S2.Specifically, when the pressure of the fluid into the first accommodating chamber 121 gradually increases, valve element 30 is gradually moved from first position
To the second place, when the pressure of fluid reaches the first predetermined pressure, the first flow channels 1211 connect with the first accommodating chamber 121
Logical, a part of fluid is entered in the 3rd flow channels 1213 by the first flow channels 1211, subsequently into the second accommodating chamber
122.Due to the second shell of column 32 connect the first shell of column 31 and the 3rd shell of column 33, and the first shell of column 31 sectional area S1, the second shell of column
32 sectional area S2With the sectional area S of the 3rd shell of column 333Between relation be S1＜ S3＜ S2, therefore the second shell of column 32 sectional area
S2With the sectional area S of the first shell of column 311Difference S2-1More than the sectional area S of the second shell of column 322With the sectional area of the 3rd shell of column 33
S3Difference S2-3.If now the pressure in the second accommodating chamber is pressure P, then the second shell of column 32 is near the end of the first shell of column 31
Power P*S suffered by face2-1Just it is greater than the power P*S suffered by end face of second shell of column 32 near the 3rd shell of column 332-3.Therefore the
Power moment suffered by end face of two shell of columns 32 near the first shell of column 31 is just greater than the second shell of column 32 near the 3rd shell of column 33
Power suffered by end face, valve element 30 will produce phase step type displacement.Said structure is simple so that valve element 30 can produce phase step type
Movement.Preferably, in the present embodiment, the first shell of column 31, the second shell of column 32 and the 3rd shell of column 33 are coaxial shell of column.
As shown in Figures 1 to 4, in the present embodiment, the first shell of column 31 includes coordinating section 311 and is arranged on cooperation section
311 near the gap section 312 of one end of elastic component accommodating chamber 11, coordinates section 311 to be adapted with the cavity wall of the first accommodating chamber 121,
There is gap, the second flow channels 1212 are accommodated by gap with second between gap section 312 and the cavity wall of the first accommodating chamber 121
Chamber 122 connects.Specifically, when valve element 30 is located at first position, the fluid with pressure in the second accommodating chamber 122 can pass through
Gap is flowed out from the second flow channels 1212, so as to reach the purpose of pressure release.Said structure is simple, it is easy to accomplish.Certainly, ability
Field technique personnel should be known that the structure not limited to this for making the second flow channels 1212 be connected with the second accommodating chamber 122, it is also possible to
It is that flowing hole is set on the precalculated position of valve element 30, when valve element 30, to be moved to the second flow channels 1212 corresponding with flowing hole
During position, the fluid in the second accommodating chamber 122 can be flowed out by the flowing hole for communicating therewith from the second flow channels 1212, with
Reach the purpose of pressure release.
As shown in Figures 1 to 4, in the present embodiment, the first shell of column 31 is cylindrical section, coordinates the diameter d of section 3111With
The diameter d of gap section 3122Between relation be d1＞ d2.Said structure is simple, it is easy to processing and manufacture.
As shown in Figures 1 to 4, in the present embodiment, the second shell of column 32 and the 3rd shell of column 33 are cylindrical section, the second shell of column
32 diameter D2More than the diameter D of the 3rd shell of column 333, coordinate the diameter d of section 3111With the diameter D of the 3rd shell of column 333Between pass
It is d to be1/D3Between 0.85-0.99.Said structure can realize the pressure difference control of high pressure or extra high voltage system.Need explanation
It is that in the present embodiment, pressure valve is controlled pressure using itself pilot pressure, by the difference in areas (d of itself1/D3
Between 0.85-0.99) and elastic component be combined into height pressure control valve.And the pressure difference of high-low pressure depend on valve element 30 diameter ratio and
The combination of elastic component 20.The rigidity of the design of elastic component 20 and the power (N/mm) of per stroke are relevant.
Preferably, as shown in Figures 1 to 4, in the present embodiment, pressure valve also includes screw 90, and screw 90 is arranged on bullet
The one end of property part accommodating chamber away from valve element accommodating chamber.Before actual use, spring can be adjusted according to pressure differential.Screw is past
In twist, spring compresses inwards, and the pressure of setting is high.Screw is twisted outward, and amount of spring compression reduces, therefore precompression also reduces.
As shown in Figures 1 to 4, in the present embodiment, the first flow channels 1211 are the first flowing hole, the second flow channels
1212 is the second flowing hole, coordinates the length of section 311 to be equal to one end away from elastic component 20 of the first flowing hole to the second excessively stream
Between one end of the close elastic component 20 in hole along the distance on the axis direction of valve body 10.Specifically, when from hydraulic system
When fluid pressure at Fluid pressure, that is, import 121a is raised, valve element 30 can be with the rising of fluid pressure progressively
To the direction displacement of elastic component accommodating chamber.When valve element 30 is moved to the second place (as shown in Figure 2), i.e., when cooperation section 311
Away from elastic component 20 end face (left side) be moved to the first flowing hole aperture the one end (left end) away from elastic component 20, together
The end face (right side) of Shi Peihe sections 311 of close elastic component 20 is moved to the close elastic component 20 in the aperture of the second flowing hole
During one end (right-hand member), the liquid of second the 122 to the second flowing hole of accommodating chamber will be at once blocked so that the second accommodating chamber 122
Inside no longer pressure release.The pressure moment of the cavity so in the second accommodating chamber 122 of valve body can keep balance.Therefore the second place
Critical localisation can be known as.Likewise, the fluid pressure at the fluid pressure from hydraulic system, that is, import 121a
During reduction, valve element 30 can with the reduction of fluid pressure progressively to the direction displacement away from elastic component accommodating chamber 11.Work as valve
When core 30 is moved to the second place (as shown in Figure 4), that is, the end face (left side) away from elastic component 20 of section 311 is coordinated to be moved to
The one end (left end) away from elastic component in the aperture of the first flowing hole, while coordinating the end face of the close elastic component 20 of section 311 (right
End face) be moved to the second flowing hole aperture close elastic component 20 one end (right-hand member) when, will at once block the first excessively stream
Pressure fluid of the hole to the second accommodating chamber 122.The pressure moment of the cavity so in the second accommodating chamber 122 of valve body can keep flat
Weighing apparatus.Said structure is simple, it is easy to accomplish.Certainly, it will be appreciated by those skilled in the art that the first flowing hole away from elastic component 20
One end between one end of the close elastic component 20 of the second flowing hole along the distance on the axis direction of valve body 10 can also slightly
More than the length for coordinating section 311.
As shown in Figures 1 to 4, in the present embodiment, the 3rd flow channels 1213 are the 3rd flowing hole, the 3rd flowing hole edge
The axis direction of valve body 10 extends, and one end of the 3rd flowing hole connects with the first flowing hole, the other end of the 3rd flowing hole and the
Two accommodating chambers 122 are connected.Specifically, when valve element 30 is located at three positions, the liquid in the first accommodating chamber 121 enters the first mistake
Discharge orifice, a part of liquid into the first flowing hole is flowed out from the first flowing hole, and remaining liquid is flowed into by the 3rd flowing hole
Second accommodating chamber 122.Said structure is simple, it is easy to process.
As shown in Figures 1 to 4, in the present embodiment, pressure valve also includes valve pocket 40, and valve pocket 40 is arranged on elastic component receiving
Have between chamber 11 and valve element accommodating chamber 12, on valve pocket 40 and avoid hole, the second end of valve element 30 passes from avoidance hole, and with
Elastic component 20 is supported.Because valve element is movably disposed in the accommodating chamber 121 of valve pocket 40 and first, it is therefore desirable to ensure valve pocket 40
Axis with the first accommodating chamber 121 overlaps.To achieve these goals, in the present embodiment, the diameter of valve pocket 40 is less than second
There is gap, valve pocket 40 can be between the diameter of the cavity wall of accommodating chamber 122, the i.e. cavity wall of the accommodating chamber 122 of valve pocket 40 and second
Floated in second accommodating chamber 122.When pressure valve is installed, first valve element 30 is stretched into the first accommodating chamber 121, then by 40 sets of valve pocket
It is located on valve element 30, because the cavity wall of the accommodating chamber 122 of valve pocket 40 and second has floating space, therefore valve pocket 40 can be realized certainly
Dynamic centering, it is to avoid the phenomenon of assembling decentraction occurs.
As shown in Figures 1 to 4, in the present embodiment, it is the oil film seal of plunger pattern between valve element 30 and valve pocket 40.By
In employing the mode of oil film rigid seal, therefore solve the problems, such as that the soft seal long-term use of valve element 30 easily fails.Meanwhile, oil
Film sealing has the function of lubrication in itself, so service life is very long, long-term use is without maintenance.Additionally, oil film seal can also
Enough realize the function of No leakage between valve element 30 and valve pocket 40.
As shown in Figures 1 to 4, in the present embodiment, valve body 10 includes the first valve body 10a and the second valve body that are connected with each other
The inner chamber of 10b, the first valve body 10a forms elastic component accommodating chamber 11, and the inner chamber of the second valve body 10b forms valve element accommodating chamber 12, valve
Set 40 is folded between the first valve body 10a and the second valve body 10b, and oil leak hole 13 is provided with the second valve body 10b, oil leak hole 13
First end is connected with the second flow channels 1212, and the second end of oil leak hole 13 is located at the junction of the second valve body 10b and valve pocket 40,
To prevent fluid from entering in elastic component accommodating chamber 11.Said structure causes to work as has fluid light between the second valve body 10b and valve pocket 40
During Micro blazed-grating, fluid can flow out from oil leak hole, it is to avoid fluid enters in elastic component accommodating chamber 11, and then avoids elastic component 20 from losing
The situation of effect occurs.Preferably, it is to be threadedly coupled between the first valve body 10a and the second valve body 10b.
Preferably, as shown in Figures 1 to 4, in the present embodiment, pressure valve also includes O-ring seal 100, sealing ring 100
It is folded between the second valve body 10b and valve pocket 40, to seal up the gap between the second valve body 10b and valve pocket 40.It is further excellent
Selection of land, the second end of oil leak hole 13 is located at the junction of the second valve body 10b and sealing ring 100.Said structure is caused when the second valve
When having the slight seepage of fluid between body 10b and sealing ring 100, fluid can flow out from oil leak hole, so as to avoid fluid from entering bullet
In property part accommodating chamber 11.Additionally, said structure above-mentioned can also avoid the situation of External leakage from occurring.
As shown in Figures 1 to 4, in the present embodiment, elastic component 20 includes spring 21 and guide part 22, and guide part 22 sets
One end near valve element 30 in spring 21 is put, elastic component accommodating chamber 11 includes directed cavity 111 and spring accommodating chamber 112, spring
21 are arranged in spring accommodating chamber 112, guide part 22 be movably disposed in directed cavity 111 and with the cavity wall of directed cavity 111
Adaptation.Said structure enables that guide part 22 is moved along predetermined direction.In addition, in the present embodiment, elastic component 20 is spring,
Pressure valve uses spring set pressure.It should be noted that spring is according to pressure differential (the first predetermined pressure and the second pre- level pressure
The difference of power) design, there are different springs to select to different pressures and pressure difference.
In the present embodiment, valve body 10 and valve element 30 are the oil film seal of plunger pattern.It is rigidly close as a result of oil film
The mode of envelope, therefore solve the problems, such as that the soft seal long-term use of valve element 30 easily fails.Meanwhile, oil film seal has lubrication in itself
Function, so service life is very long, long-term use is without maintenance.Additionally, oil film seal can also realize valve body 10 and valve element
The function of No leakage between 30.
In the present embodiment, valve element 30 is by Surface hardening treatment.Said structure is caused between valve element 30 and valve body 10
Coordinate more smooth so that the motion that valve element 30 can be freely.Similarly, said structure is also caused between valve element 30 and valve pocket 40
Coordinate more smooth, further such that the motion that valve element 30 can be freely.Preferably, in the present embodiment, valve element 30 through overheat at
Manage to reach Surface hardening treatment.Cure process is suitable in RHC36 to RHC60 scopes, realizes the function of No leakage.
It should be noted that as shown in Figures 1 to 4, in the present embodiment, because valve element 30 needs step to move, therefore
Spring employs design of the ratio of height to diameter more than 2.6.And if the spring to above-mentioned ratio of height to diameter more than 2.6 is not positioned
Words, are likely to result in the power that spring cannot keep required in more long one section.Therefore, in the present embodiment, spring relies on bullet
Property part accommodating chamber cavity wall positioned with ensure spring can method required power is kept in more long one section.
Preferably, in the present embodiment, valve element 30 can be one or more snippets structure design.
As shown in figure 5, present invention also provides a kind of hydraulic system, the hydraulic system according to the present embodiment includes：Air pump
Converter 50, switch valve 70 and pressure valve.Wherein, air pump converter 50 has the gentle pump discharge 52 of air pump entrance 51, air pump
Entrance 51 is connected with source of the gas 60.Switch valve 70 is arranged between air pump converter 50 and source of the gas 60, and stream is provided with switch valve 70
Body entrance 71, switch valve 70 has opening and closed mode, and when fluid intake 71, to have fluid to enter fashionable, and switch valve 70 is in
Closed mode, the passage between the cut-out air pump of switch valve 70 entrance 51 and source of the gas 60, when the no fluid of fluid intake 71 enters fashionable,
When switch valve 70 is in opening, air pump entrance 51 is connected with source of the gas 60.Pressure valve is above-mentioned pressure valve, the of pressure valve
The import 121a of one accommodating chamber 121 is connected with air pump outlet 52, first flow channels 1211 and the stream of switch valve 70 of pressure valve
Body entrance 71 is connected, and the second flow channels 1212 of pressure valve are connected with the fuel tank 80 of hydraulic system.Due to above-mentioned pressure valve tool
Have the advantages that control accuracy is higher, do not need external power supply, therefore the hydraulic system with it also has above-mentioned advantage.
Specifically, in the present embodiment, when the fluid pressure (oil pressure) in system reaches the first predetermined pressure, pressure valve
The first flow channels 1211 open, a part of fluid flows into switch valve 70 from the first flow channels 1211 by fluid intake 71
It is interior.The passage between air pump entrance 51 and source of the gas 60 can be cut off after switch valve 70 receives fluid.So, air pump converter 50
Source of the gas will no longer be received, and source of the gas is no longer converted into hydraulic pressure (no longer being pressurizeed to system), so that the pressure in guarantee system
Power is not over the first predetermined pressure.And when working as the second predetermined pressure of arrival of the fluid pressure (oil pressure) in system, pressure valve
First flow channels 1211 are closed, and fluid is no longer flow into switch valve 70.Switch valve 70 due to be not received by fluid and by gas
Channel connection between pump intake 51 and source of the gas 60.So, air pump converter 50 is continued to receive source of the gas and converts source of the gas
It is hydraulic pressure (continuing to be pressurizeed to system), so that the pressure in guarantee system is not less than the second predetermined pressure.It should be noted that
When the valve element 30 of pressure valve is in first position, the second flow channels are connected with fuel tank 80, so that the oil in the second accommodating chamber
Liquid is returned in fuel tank 80.
It should be noted that in the present embodiment, pressure valve can be designed as plug-in structure or board-like attachment structure,
With the structure design type selecting suitable for various hydraulic systems.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (14)
1. a kind of pressure valve, it is characterised in that including：
Valve body (10), with mutual disconnected elastic component accommodating chamber (11) and valve element accommodating chamber (12), the valve element is accommodated
Chamber (12) includes the first accommodating chamber (121) and the close described elastic component accommodating chamber positioned at first accommodating chamber (121)
(11) the second accommodating chamber (122), fluid enters the valve body (10) from the import (121a) of first accommodating chamber (121)
It is interior, it is provided with the first flow channels (1211), the second excessively stream in the cavity wall of first accommodating chamber (121) of the valve body (10)
Passage (1212) and the 3rd flow channels (1213), second flow channels (1212) are positioned at first flow channels
(1211) side of close described elastic component accommodating chamber (11), the 3rd flow channels (1213) connect first excessively stream
Passage (1211) and second accommodating chamber (122), second flow channels (1212) and first flow channels
And the 3rd flow channels (1213) do not connect mutually (1211)；
Elastic component (20), is arranged in the elastic component accommodating chamber (11)；
Valve element (30), is movably disposed in the valve element accommodating chamber (12), and the first end of the valve element (30) is positioned at described
In first accommodating chamber (121), the second end of the valve element (30) stretch into the elastic component accommodating chamber (11) and with the elasticity
Part (20) is supported, the valve element (30) with first position, the second place and the 3rd position, when the valve element (30) is positioned at described
During first position, the valve element (30) blocks first flow channels (1211), so that first accommodating chamber (121) and institute
State the second accommodating chamber (122) not connect mutually, second flow channels (1212) connect with second accommodating chamber (122), when
When the valve element (30) is positioned at the second place, the valve element (30) blocks first flow channels (1211) with described the
Two flow channels (1212), when the valve element (30) is positioned at three position, first accommodating chamber (121) and described
Two accommodating chambers (122) are connected by the 3rd flow channels (1213), and second flow channels (1212) are by the valve element
(30) block, a part of fluid from first flow channels (1211) outflow, remaining described fluid flows into described the
Two accommodating chambers (122),
Wherein, when the pressure of the fluid gradually increases, the valve element (30) is gradually moved to described from the first position
The second place, when the pressure of the fluid reaches the first predetermined pressure, the valve element (30) produces phase step type displacement, the valve
Core (30) is moved quickly to the 3rd position from the second place, when the pressure of the fluid is gradually reduced, the valve
Core (30) is gradually moved to the second place from the 3rd position, when the pressure of the fluid reaches the second predetermined pressure, institute
State valve element (30) and produce phase step type displacement, the valve element (30) is moved quickly to the first position from the second place.
2. pressure valve according to claim 1, it is characterised in that the valve element (30) is including from the valve element accommodating chamber
(12) the first shell of column (31), the second shell of column (32) and the 3rd for extremely being set gradually on the direction of the elastic component accommodating chamber (11)
Shell of column (33), first shell of column (31) is movably disposed in first accommodating chamber (121), second shell of column (32)
And the 3rd shell of column (33) is movably disposed in second accommodating chamber (122), first shell of column (31) is cut
Area S1, second shell of column (32) sectional area S2With the sectional area S of the 3rd shell of column (33)3Between relation be S1＜ S3
＜ S2。
3. pressure valve according to claim 2, it is characterised in that first shell of column (31) including coordinate section (311) with
And it is arranged on gap section (312) of cooperation section (311) near one end of the elastic component accommodating chamber (11), the cooperation section
(311) cavity wall with first accommodating chamber (121) is adapted, gap section (312) and first accommodating chamber (121)
There is gap, second flow channels (1212) are connected by the gap with second accommodating chamber (122) between cavity wall.
4. pressure valve according to claim 3, it is characterised in that first shell of column (31) is cylindrical section, the cooperation
The diameter d of section (311)1With the diameter d in gap section (312)2Between relation be d1＞ d2。
5. pressure valve according to claim 3, it is characterised in that the 3rd shell of column (33) is cylindrical section, the cooperation
The diameter d of section (311)1With the diameter D of the 3rd shell of column (33)3Between relation be d1/D3Between 0.85-0.99.
6. pressure valve according to claim 3, it is characterised in that first flow channels (1211) are the first excessively stream
Hole, second flow channels (1212) are the second flowing hole, and the length of cooperation section (311) is equal to first flowing hole
One end away from the elastic component (20) to the edge between one end of the close described elastic component (20) of second flowing hole
Distance on valve body (10) axis direction.
7. pressure valve according to claim 6, it is characterised in that the 3rd flow channels (1213) are the 3rd excessively stream
Hole, the 3rd flowing hole extends along the axis direction of the valve body (10), one end and described first of the 3rd flowing hole
Flowing hole is connected, and the other end of the 3rd flowing hole is connected with second accommodating chamber (122).
8. pressure valve according to claim 1, it is characterised in that the pressure valve also includes valve pocket (40), the valve pocket
(40) it is arranged between the elastic component accommodating chamber (11) and the valve element accommodating chamber (12), has on the valve pocket (40) and keep away
Allow the second end of hole, the valve element (30) to be passed from the avoidance hole, and supported with the elastic component (20).
9. pressure valve according to claim 8, it is characterised in that be post between the valve element (30) and the valve pocket (40)
The oil film seal of plunger type formula.
10. pressure valve according to claim 8, it is characterised in that the valve body (10) includes the first valve for being connected with each other
Body (10a) and the second valve body (10b), the inner chamber of first valve body (10a) form the elastic component accommodating chamber (11), and described the
The inner chamber of two valve bodies (10b) forms the valve element accommodating chamber (12), the valve pocket (40) be folded in first valve body (10a) with
Between second valve body (10b), oil leak hole (13), the of the oil leak hole (13) are provided with second valve body (10b)
One end connects with second flow channels (1212), and the second end of the oil leak hole (13) is located at second valve body (10b)
With the junction of the valve pocket (40), with prevent the fluid enter the elastic component accommodating chamber (11) in.
11. pressure valve according to claim 1, it is characterised in that the elastic component (20) is including spring (21) and leads
To portion (22), the guide part (22) is arranged on the spring (21) near one end of the valve element (30), and the elastic component holds
Receiving chamber (11) includes directed cavity (111) and spring accommodating chamber (112), and the spring (21) is arranged on the spring accommodating chamber
(112) in, the guide part (22) be movably disposed in the directed cavity (111) and with the chamber of the directed cavity (111)
Wall is adapted to.
12. pressure valve according to claim 1, it is characterised in that the valve body (10) and the valve element (30) are plunger
The oil film seal of pattern.
13. pressure valve according to claim 1, it is characterised in that the valve element (30) is by Surface hardening treatment.
A kind of 14. hydraulic systems, it is characterised in that including：
Air pump converter (50), with air pump entrance (51) gentle pump discharge (52), the air pump entrance (51) and source of the gas (60)
Connection；
Switch valve (70), is arranged between the air pump converter (50) and the source of the gas (60), is set on the switch valve (70)
Be equipped with fluid intake (71), the switch valve (70) with opening and closed mode, when the fluid intake (71) has stream
Body enters fashionable, the switch valve (70) in the closed mode, the switch valve (70) cut off the air pump entrance (51) with
Passage between the source of the gas (60), when the fluid intake (71), no fluid enters fashionable, and the switch valve (70) is in institute
When stating opening, the air pump entrance (51) connects with the source of the gas (60)；
Pressure valve, the pressure valve is the pressure valve any one of claim 1 to 13, the first receiving of the pressure valve
The import (121a) in chamber (121) and the air pump outlet (52) are connected, first flow channels (1211) of the pressure valve and institute
State the fluid intake (71) connection of switch valve (70), the second flow channels (1212) and the hydraulic pressure system of the pressure valve
Fuel tank (80) connection of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078387.8A CN106763899B (en) | 2016-11-29 | 2016-11-29 | Pressure valve and hydraulic system with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078387.8A CN106763899B (en) | 2016-11-29 | 2016-11-29 | Pressure valve and hydraulic system with it |
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| Publication Number | Publication Date |
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| CN106763899A true CN106763899A (en) | 2017-05-31 |
| CN106763899B CN106763899B (en) | 2019-02-26 |
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ID=58898377
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611078387.8A Active CN106763899B (en) | 2016-11-29 | 2016-11-29 | Pressure valve and hydraulic system with it |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606235A (en) * | 2017-09-25 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Control valve arrangement and there is its compressor |
| CN109296527A (en) * | 2018-12-01 | 2019-02-01 | 李军 | A kind of reciprocating pump control valve |
| CN112283423A (en) * | 2020-11-13 | 2021-01-29 | 哈尔滨工业大学 | Pressure control device for water-based liquid medium |
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| CN101668973A (en) * | 2007-03-31 | 2010-03-10 | 麦克罗斯塔克公司 | Pilot operated spool valve |
| CN101713421A (en) * | 2008-10-06 | 2010-05-26 | 罗伯特.博世有限公司 | Slide valve for hydraulic control in a motor vehicle automatic transmission |
| US20150090354A1 (en) * | 2009-08-17 | 2015-04-02 | Dunan Microstaq, Inc. | Pilot-Operated Spool Valve |
| CN105864139A (en) * | 2016-05-18 | 2016-08-17 | 山东常林机械集团股份有限公司 | Hydraulic operated directional control valve |
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| JPH01120492A (en) * | 1987-11-02 | 1989-05-12 | Sumitomo Heavy Ind Ltd | Direction change over valve |
| CN101668973A (en) * | 2007-03-31 | 2010-03-10 | 麦克罗斯塔克公司 | Pilot operated spool valve |
| CN101713421A (en) * | 2008-10-06 | 2010-05-26 | 罗伯特.博世有限公司 | Slide valve for hydraulic control in a motor vehicle automatic transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107606235A (en) * | 2017-09-25 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Control valve arrangement and there is its compressor |
| CN107606235B (en) * | 2017-09-25 | 2023-10-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Control valve structure and compressor with same |
| CN109296527A (en) * | 2018-12-01 | 2019-02-01 | 李军 | A kind of reciprocating pump control valve |
| CN112283423A (en) * | 2020-11-13 | 2021-01-29 | 哈尔滨工业大学 | Pressure control device for water-based liquid medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106763899B (en) | 2019-02-26 |
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