CN106050776B - Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve - Google Patents
Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve Download PDFInfo
- Publication number
- CN106050776B CN106050776B CN201610513493.8A CN201610513493A CN106050776B CN 106050776 B CN106050776 B CN 106050776B CN 201610513493 A CN201610513493 A CN 201610513493A CN 106050776 B CN106050776 B CN 106050776B
- Authority
- CN
- China
- Prior art keywords
- hydraulic pressure
- relief valve
- piston
- plunger type
- shell body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- F15B13/025—Pressure reducing 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
Abstract
A kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve of the present invention, it is connected in parallel on hydraulic pressure main road, it is characterised in that the bypass of hydraulic pressure with adjusting flexible plunger type bidirection press relief valve includes that hydraulic pressure bypasses left section, hydraulic pressure bypasses right section and be connected to adjusting flexible plunger type bidirection press relief valve between the two；Adjusting flexible plunger type bidirection press relief valve includes shell body, inner housing, piston, two springs, two regulating blocks and two adjusting nuts.The present invention have the advantages that to carry out double-direction relief, simple in construction, performance stably, the short speed of venting duration is fast, precision is high, good airproof performance.
Description
Technical field
The present invention relates to a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve.
Background technology
In radiator, cooling system, hydraulic system, lubricating system, fluid transmission system, power system, the machinery of lathe
Main shaft, machining center and liquid etc.；In system above, liquid has some impact, pulse, instantaneous pressures in flow process
Greatly, instantaneous delivery it is big etc. it is harsh want condition for peace, the fluid especially used in winter and severe cold area machinery is just opened in machinery
When dynamic, viscosity is big, poor fluidity, with great impact power, the whole machinery of influence, the paralysis of machining center.In order that pressure is flat
Weighing apparatus, discharges pressure well, and damage will not be brought to other equipment or other components and is scrapped, and having on the market typically can be
Hold and hydraulic pressure bypass set up on susceptible to plugging hydraulic pressure main road, but relief valve is set in hydraulic pressure bypass so that system pressure is balanced,
Safeguards system safety.But relief valve on the market is all unidirectional relief valve, set direction is needed in installation process, separately
It can not be applied to outside on the pipeline that two-way circulates, and pressure pressure release value can not be set.Therefore seek one kind can carry out it is double
To pressure release, simple in construction, performance is stable, the short speed of venting duration is fast, precision is high, good airproof performance band adjusting flexible plunger type is double
It is particularly important to the hydraulic pressure bypass of pressure relief valve.
The content of the invention
It is steady it is an object of the invention to overcome above-mentioned deficiency there is provided one kind can carry out double-direction relief, simple in construction, performance
It is fixed, the short speed of venting duration is fast, precision is high, by the good airproof performance hydraulic pressure with adjusting flexible plunger type bidirection press relief valve
Road.
The object of the present invention is achieved like this：
A kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve, it is connected in parallel on hydraulic pressure main road, its feature
Be with adjusting flexible plunger type bidirection press relief valve hydraulic pressure bypass include hydraulic pressure bypass left section, hydraulic pressure bypass right section and company
It is connected to adjusting flexible plunger type bidirection press relief valve between the two；
The adjusting flexible plunger type bidirection press relief valve includes shell body, inner housing, piston, two springs, two tune
The shell body of a lateral direction penetrating is formed in locking nub and two adjusting nuts, the shell body lateral arrangement, the shell body
Fluid passageways chamber is provided with the middle part of fluid passage, the shell body, the internal diameter of Fluid passageways chamber is more than shell body fluid passage
External diameter, Fluid passageways intracavitary be fixedly installed one piece separation ring flat-plate, separate ring flat-plate by Fluid passageways chamber be separated to form left and right two
The individual chamber of Fluid passageways half, left section and right section of the shell body is symmetrically arranged with a nut groove, and the piston is horizontally set at
Set gradually from inside to outside respectively in the middle part of shell body fluid passage, the shell body fluid passage of the piston left and right sides spring,
Regulating block and inner housing, the outer end of two springs is connected respectively to be divided in the inner of two regulating blocks, the outer section of two regulating blocks
Two adjusting nuts Xuan be equipped with, regulating block coordinates with adjusting nut screw thread, and adjusting nut is limited in nut groove, regulating block
Gap is left between inner face and shell body, gap is left between the outer face of regulating block and inner housing, the piston is left and right
The hollow structure of both ends open, the piston includes piston shell, and being provided with one piece in the middle part of the piston shell is vertically arranged
Dividing plate, the inside of piston is divided into the piston fluid passage that is in communication with the outside respectively of left and right two by dividing plate, left positioned at dividing plate
The fluid bore being arranged symmetrically is provided with the piston shell of right both sides.
The outer end inner wall of inner housing is provided with connection screw thread.
Hollow out at the shell body of adjusting nut front and rear surfaces, the outer surface of adjusting nut is provided with graduation mark.
The internal diameter for separating ring flat-plate is consistent with the internal diameter of shell body fluid passage.
The external diameter of spring is matched with the internal diameter of shell body fluid passage.
The fluid bore is circular layout on piston shell.
Fluid bore of the dividing plate per side is provided with multi-turn.
The fluid bore of high order end is not more than the transverse direction of the chamber of Fluid passageways half to the lateral separation between the fluid bore of low order end
Distance.
The left and right ends of the piston are provided with the step coordinated with spring.
It is provided between the inner segment outer wall and shell body of regulating block between inner seal ring, the outer section inwall inner housing of regulating block
It is provided with exterior seal ring.
Compared with prior art, the beneficial effects of the invention are as follows：
Double-direction relief, simple in construction, performance are stable, the short speed of venting duration is fast, precision with that can carry out by the present invention
The high, advantage of good airproof performance.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the internal structure schematic diagram of adjusting flexible plunger type bidirection press relief valve.
Fig. 3 is the contour structures schematic diagram of adjusting flexible plunger type bidirection press relief valve.
Fig. 4 is the section plan of housing.
Fig. 5 is the section plan of piston.
Fig. 6 is the half-sectional explosive view of plane of adjusting flexible plunger type bidirection press relief valve.
Fig. 7 is the three-dimensional half-sectional explosive view of adjusting flexible plunger type bidirection press relief valve.
Fig. 8 is the schematic diagram of embodiment 1.
Fig. 9 is the schematic diagram of embodiment 2.
Wherein：
Shell body 701, shell body fluid passage 701.1, Fluid passageways chamber 701.2, separation ring flat-plate 701.3, nut groove
701.4
Inner housing 702
Piston 703, piston shell 703.1, dividing plate 703.2, fluid bore 703.3, step 703.4, piston fluid passage
703.5
Spring 704
Regulating block 705
Adjusting nut 706
Connecting bolt 707
Inner seal ring 708
Exterior seal ring 709.
Embodiment
Referring to Fig. 1 ~ Fig. 9, a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve of the present invention, it
It is connected in parallel on hydraulic pressure main road, the hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve includes hydraulic pressure and bypasses left section, hydraulic pressure
Right section of bypass and adjusting flexible plunger type bidirection press relief valve between the two is connected to, hydraulic pressure is bypassed by left section and hydraulic pressure
Right section of road is used with adjusting flexible plunger type bidirection press relief valve to be threadedly coupled.
The adjusting flexible plunger type bidirection press relief valve, it include shell body 701, inner housing 702, piston 703, two
Spring 704, two regulating blocks 705 and two adjusting nuts 706, the lateral arrangement of shell body 701, the shell body 701
The interior shell body fluid passage 701.1 for forming a lateral direction penetrating, the middle part of the shell body 701 is provided with Fluid passageways chamber
701.2, the internal diameter of Fluid passageways chamber 701.2 is more than solid in the external diameter of shell body fluid passage 701.1, Fluid passageways chamber 701.2
Surely one piece of separation ring flat-plate 701.3 is provided with, the internal diameter for separating ring flat-plate 701.3 is consistent with the internal diameter of shell body fluid passage 701.1,
Separate ring flat-plate 701.3 and Fluid passageways chamber 701.2 is separated to form two chambers of Fluid passageways half in left and right, a left side for the shell body 701
Section is symmetrically arranged with a nut groove 701.4 with right section.The piston 703 is horizontally set at shell body fluid passage 701.1
Spring 704, regulating block are set gradually from inside to outside respectively in middle part, the shell body fluid passage 701.1 of the left and right sides of piston 703
705 and inner housing 702, the external diameter of spring 704 is matched with the internal diameter of shell body fluid passage 701.1.Two springs 704 it is outer
End, which connects to revolve respectively in the inner of two regulating blocks 705, the outer section of two regulating blocks 705 respectively, is equipped with two adjusting nuts 706,
Hollow out at the shell body 701 of the front and rear surfaces of adjusting nut 706, the outer surface of adjusting nut 706 is provided with graduation mark, regulating block
705 coordinate with the screw thread of adjusting nut 706, and adjusting nut 706 is limited in nut groove 701.4, and putting adjusting nut 706 by rotation can
To adjust the lateral separation of regulating block 705, so as to adjust the elastic potential energy of spring 704, fluid can be controlled in outer shell fluid
Pressure release value in passage 701.1.Inner housing 702 is fixed with shell body 701 by connecting bolt 707, in the outer end of inner housing 702
Wall is provided with connection screw thread, and inner seal ring 708, regulating block are provided between the inner segment outer wall and shell body 701 of regulating block 705
Exterior seal ring 709 is provided between 705 outer section inwall inner housing 702, between the inner face and shell body 701 of regulating block 705
Gap is left, gap is left between the outer face of regulating block 705 and inner housing 702.
The piston 703 is the hollow structure of left and right ends opening, and the piston 703 includes piston shell 703.1, described
The middle part of piston shell 703.1 is provided with one piece of dividing plate being vertically arranged 703.2, and dividing plate 703.2 separates the inside of piston 703
The piston fluid passage 703.5 being in communication with the outside respectively for left and right two, the piston shell positioned at the left and right sides of dividing plate 703.2
It is provided with the fluid bore 703.3 being arranged symmetrically on 703.1, the fluid bore 703.3 is circular layout on piston shell 703.1,
Fluid bore 703.3 of the dividing plate 703.2 per side can be provided with multi-turn, and the one of high order end encloses fluid bore 703.3 to low order end
Lateral separation between one circle fluid bore 703.3 is not more than the lateral separation of the chamber of Fluid passageways half.The left and right two of the piston 703
End is provided with the step 703.4 coordinated with spring 704.
A kind of method of work of the hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve：
Adjusting nut is adjusted according to the setting pressure of fluid first, so as to be adjusted come the elastic potential energy to spring
Section, pressure release value of the final control fluid in outer shell fluid passage；
When hydraulic pressure main road is unobstructed, the pressure of the left and right ends of adjusting flexible plunger type bidirection press relief valve is equal, piston
In housing center position, the partition position of piston is corresponding with the position of the separation ring flat-plate of housing, and piston is not acted；
Embodiment 1, when liquid flows from left to right and hydraulic pressure main road is obstructed, adjusting flexible plunger type bidirection press pressure release
The left end pressure of valve is more than right-hand member pressure, because the pressure in the piston fluid passage on the left of dividing plate is more than the piston on the right side of dividing plate
Pressure in fluid passage, fluid forces dividing plate moves right, so that piston also moves right, the fluid on the left of dividing plate
Hole position is when half intracavitary of Fluid passageways on right side, and the larger fluid of pressure passes through fluid out of left side piston fluid passage
Hole flows out to the intracavitary of Fluid passageways half on right side, in the piston fluid passage that right side is then flow to again, so as to reach pressure release
Purpose, now the spring in left side be in extended state, the spring on right side is in compressive state, until on the left of dividing plate and right side
Pressure is equal, and piston puts in order original position, and hydraulic pressure main road returns unobstructed.
Embodiment 2, when liquid flows from left to right and hydraulic pressure main road is obstructed, adjusting flexible plunger type bidirection press pressure release
The right-hand member pressure of valve is more than left end pressure, because the pressure in the piston fluid passage on the right side of dividing plate is more than the piston on the left of dividing plate
Pressure in fluid passage, fluid forces dividing plate is moved to the left, so that piston is also moved to the left, the fluid on the right side of dividing plate
Hole position is when half intracavitary of Fluid passageways in left side, and the larger fluid of pressure passes through fluid out of right side piston fluid passage
Hole flows out to the intracavitary of Fluid passageways half in left side, in the piston fluid passage that left side is then flow to again, so as to reach pressure release
Purpose, now the spring on right side be in extended state, the spring in left side is in compressive state, until on the left of dividing plate and right side
Pressure is equal, and hydraulic pressure main road returns unobstructed.
Claims (8)
1. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve, it is connected in parallel on hydraulic pressure main road, and its feature exists
In with adjusting flexible plunger type bidirection press relief valve hydraulic pressure bypass include hydraulic pressure bypass left section, hydraulic pressure bypass right section and connect
In adjusting flexible plunger type bidirection press relief valve between the two；
The adjusting flexible plunger type bidirection press relief valve includes shell body（701）, inner housing（702）, piston（703）, two
Spring（704）, two regulating blocks（705）And two adjusting nuts（706）, the shell body（701）Lateral arrangement, it is described outer
Housing（701）The interior shell body fluid passage for forming a lateral direction penetrating（701.1）, the shell body（701）Middle part set
There is Fluid passageways chamber（701.2）, Fluid passageways chamber（701.2）Internal diameter be more than shell body fluid passage（701.1）External diameter, stream
Body passageway chamber（701.2）Inside it is fixedly installed one piece of separation ring flat-plate（701.3）, separate ring flat-plate（701.3）By Fluid passageways chamber
（701.2）It is separated to form two chambers of Fluid passageways half in left and right, the shell body（701）Left section and right section be symmetrically arranged with one
Nut groove（701.4）, the piston（703）It is horizontally set at shell body fluid passage（701.1）Middle part, piston（703）It is left
The shell body fluid passage of right both sides（701.1）Inside set gradually spring from inside to outside respectively（704）, regulating block（705）And
Inner housing（702）, two springs（704）Outer end connect two regulating blocks respectively（705）The inner, two regulating blocks（705）
Outer section on respectively rotation be equipped with two adjusting nuts（706）, regulating block（705）With adjusting nut（706）Screw thread coordinates, and adjusts spiral shell
It is female（706）It is limited in nut groove（701.4）It is interior, regulating block（705）Inner face and shell body（701）Between leave gap, adjust
Locking nub（705）Outer face and inner housing（702）Between leave gap, the piston（703）For the hollow of left and right ends opening
Structure, the piston（703）Including piston shell（703.1）, the piston shell（703.1）Middle part be provided with one piece it is vertical
The dividing plate of arrangement（703.2）, dividing plate（703.2）By piston（703）Inside be divided into left and right two and be in communication with the outside respectively
Piston fluid passage（703.5）, positioned at dividing plate（703.2）The piston shell of the left and right sides（703.1）On be provided with and be arranged symmetrically
Fluid bore（703.3）；
The fluid bore of high order end（703.3）To the fluid bore of low order end（703.3）Between lateral separation be not more than Fluid passageways
The lateral separation of half chamber；
The piston（703）Left and right ends be provided with and spring（704）The step of cooperation（703.4）.
2. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve according to claim 1, its feature exists
In inner housing（702）Outer end inner wall be provided with connection screw thread.
3. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve according to claim 1, its feature exists
In adjusting nut（706）The shell body of front and rear surfaces（701）Locate hollow out, adjusting nut（706）Outer surface be provided with graduation mark.
4. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve according to claim 1, its feature exists
In separation ring flat-plate（701.3）Internal diameter and shell body fluid passage（701.1）Internal diameter it is consistent.
5. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve according to claim 1, its feature exists
In spring（704）External diameter and shell body fluid passage（701.1）Internal diameter matching.
6. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve according to claim 1, its feature exists
In the fluid bore（703.3）It is circular layout in piston shell（703.1）On.
7. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve according to claim 1, its feature exists
In dividing plate（703.2）Fluid bore per side（703.3）It is provided with multi-turn.
8. a kind of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve according to claim 1, its feature exists
In regulating block（705）Inner segment outer wall and shell body（701）Between be provided with inner seal ring（708）, regulating block（705）Outer section
Inwall inner housing（702）Between be provided with exterior seal ring（709）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513493.8A CN106050776B (en) | 2016-06-30 | 2016-06-30 | Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513493.8A CN106050776B (en) | 2016-06-30 | 2016-06-30 | Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050776A CN106050776A (en) | 2016-10-26 |
| CN106050776B true CN106050776B (en) | 2017-11-07 |
Family
ID=57200700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610513493.8A Active CN106050776B (en) | 2016-06-30 | 2016-06-30 | Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106050776B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11920720B2 (en) * | 2021-05-14 | 2024-03-05 | Saudi Arabian Oil Company | System and method for mitigating water hammer by looping surge pressure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033375A (en) * | 1976-05-07 | 1977-07-05 | J. I. Case Company | Two-way fluid pressure relief valve |
| DE3916260A1 (en) * | 1989-05-19 | 1990-11-22 | Voss Richard Grubenausbau | Small pressure restricting valve with high rate of flow - has tubular sleeve forming valve piston containing interconnecting throttle bore |
| CN102537449A (en) * | 2011-12-07 | 2012-07-04 | 三一重型装备有限公司 | Bidirectional self-adaptive damping valve |
| CN202402737U (en) * | 2012-01-06 | 2012-08-29 | 福建雪人股份有限公司 | Oil pressure soft bypass valve |
| CN102788054A (en) * | 2012-07-27 | 2012-11-21 | 柳州柳工挖掘机有限公司 | Pilot hydraulic control system with oil changing function |
| CN203604300U (en) * | 2013-11-26 | 2014-05-21 | 徐州重型机械有限公司 | Screw position adjusting structure and hydraulic valve set value adjusting device |
| CN205136707U (en) * | 2015-09-29 | 2016-04-06 | 哈尔滨东安发动机（集团）有限公司 | Pressure adjustable relief valve |
| CN205937276U (en) * | 2016-06-30 | 2017-02-08 | 江苏金荣森制冷科技有限公司 | Hydraulic pressure bypass of piston type double directional pressure relief valve with adjustable area |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005265230A (en) * | 2004-03-17 | 2005-09-29 | Tgk Co Ltd | Bidirectional expansion device |
| JP4885617B2 (en) * | 2006-06-05 | 2012-02-29 | シロキ工業株式会社 | Door check device |
-
2016
- 2016-06-30 CN CN201610513493.8A patent/CN106050776B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033375A (en) * | 1976-05-07 | 1977-07-05 | J. I. Case Company | Two-way fluid pressure relief valve |
| DE3916260A1 (en) * | 1989-05-19 | 1990-11-22 | Voss Richard Grubenausbau | Small pressure restricting valve with high rate of flow - has tubular sleeve forming valve piston containing interconnecting throttle bore |
| CN102537449A (en) * | 2011-12-07 | 2012-07-04 | 三一重型装备有限公司 | Bidirectional self-adaptive damping valve |
| CN202402737U (en) * | 2012-01-06 | 2012-08-29 | 福建雪人股份有限公司 | Oil pressure soft bypass valve |
| CN102788054A (en) * | 2012-07-27 | 2012-11-21 | 柳州柳工挖掘机有限公司 | Pilot hydraulic control system with oil changing function |
| CN203604300U (en) * | 2013-11-26 | 2014-05-21 | 徐州重型机械有限公司 | Screw position adjusting structure and hydraulic valve set value adjusting device |
| CN205136707U (en) * | 2015-09-29 | 2016-04-06 | 哈尔滨东安发动机（集团）有限公司 | Pressure adjustable relief valve |
| CN205937276U (en) * | 2016-06-30 | 2017-02-08 | 江苏金荣森制冷科技有限公司 | Hydraulic pressure bypass of piston type double directional pressure relief valve with adjustable area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106050776A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106122545B (en) | The working method of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve | |
| CN106051245B (en) | Adjusting flexible plunger type bidirection press relief valve | |
| CN205938031U (en) | Piston type double directional pressure relief valve with adjustable | |
| CN204164078U (en) | A kind of universal swing oil hydraulic cylinder | |
| CN101718337B (en) | Electricity-liquid integration control device for metal belt continuously variable transmission, clamp type control valve and digital pressure reduction valve | |
| CN103925405A (en) | Piston-type pneumatic proportional pressure reducing valve of ball screw driven by servo motor directly | |
| CN105937512B (en) | The method of work of adjusting flexible plunger type bidirection press relief valve | |
| CN106050776B (en) | Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve | |
| CN110230617A (en) | A kind of novel load holding valve | |
| CN102287412A (en) | Ultra-high pressure proportional relief valve | |
| CN105952932B (en) | Piston bidirectional pressure relief valve | |
| CN205937276U (en) | Hydraulic pressure bypass of piston type double directional pressure relief valve with adjustable area | |
| CN206159579U (en) | Pilot -operated type relief valve | |
| CN103758816A (en) | Integration series connection cylinder with adjustable stroke | |
| CN105937515B (en) | The method of work of hydraulic pressure bypass with piston bidirectional pressure relief valve | |
| CN106051246B (en) | The working method of piston bidirectional pressure relief valve | |
| CN106122544B (en) | Hydraulic pressure bypass with adjustable ball figure bidirection press relief valve | |
| CN106015192B (en) | The method of work of the hydraulic pressure heat-exchange system of hydraulic pressure bypass with adjustable relief valve | |
| CN206112186U (en) | Take hydraulic pressure bypass of piston double directional pressure relief valve | |
| CN105952938B (en) | Hydraulic pressure bypass with piston bidirectional pressure relief valve | |
| CN105952934B (en) | The working method of hydraulic pressure bypass with adjustable ball figure bidirection press relief valve | |
| CN208879735U (en) | Common in-vehicle grinding machine tool hydraulic dilatation inner clamping type simple and easy jacket | |
| CN106051244B (en) | The working method of adjustable ball build bidirection press relief valve | |
| CN206571957U (en) | A kind of reductor with separator | |
| CN105937522B (en) | The hydraulic pressure heat-exchange system of hydraulic pressure bypass with adjustable relief valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |