CN109555752A - A kind of servo-hydraulic pumping system and automatic start-stop valve - Google Patents
A kind of servo-hydraulic pumping system and automatic start-stop valve Download PDFInfo
- Publication number
- CN109555752A CN109555752A CN201910029378.7A CN201910029378A CN109555752A CN 109555752 A CN109555752 A CN 109555752A CN 201910029378 A CN201910029378 A CN 201910029378A CN 109555752 A CN109555752 A CN 109555752A
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- China
- Prior art keywords
- valve
- oil
- spool
- stop valve
- pump
- 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.)
- Pending
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 12
- 239000002828 fuel tank Substances 0.000 claims abstract description 14
- 230000008676 import Effects 0.000 claims abstract description 12
- 241000009298 Trigla lyra Species 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- -1 start and stop valve Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/001—Servomotor systems with fluidic control
-
- 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
- F16K11/105—Three-way check or safety valves with two or more closure members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1823—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for ball check valves
-
- 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
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8609—Control during or prevention of abnormal conditions the abnormal condition being cavitation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of servo-hydraulic pumping system and automatic start-stop valves, are made of filter, fuel tank, start and stop valve, oil inlet pipe, pump, pouring orifice, oil outlet pipe, control piper, motor, working machine, oil return opening, spool, horizontal spring, ball valve, uprighting spring, control mouth, valve chest, valve import and valve outlet.Automatic start-stop valve of the invention realizes the automatic switch during hydraulic pump starts and stops, and prevents oil circuit oil return, and when secondary work is not necessarily to oiling；Time and labour are saved, has many advantages, such as that structure is simple and economical practical；Engineering practical value with higher.
Description
Technical field
The invention belongs to hydraulic drive and control field, it is related to a kind of servo-hydraulic pumping system and automatic start-stop valve, is used for
It realizes in the shutdown process of hydraulic pump, energy automatic open-close prevents the oil suction road oil return of hydraulic pump and inflatable chamber occurs.
Background technique
Hydraulic pump is the important motivity element during hydraulic drive, its function is exactly to convert mechanical energy into liquid
Pressure energy.The working principle of hydraulic pump is that the variation of pump chamber is realized in the movement of rotor, so that compression fluid has fluid
Pressure energy.There are many common type hydraulic pump, are divided into gear pump, vane pump and plunger pump etc. by structure.
Hydraulic pump is all the oil suction in fuel tank by inlet line, then arrange through high pressure drain line in the process of work
Out, in order to keep the continuous work pumped, entrained gas is unable in inlet line.The inlet line of entrained gas pump difficult to realize
Normal oil suction, even the starting of the stronger pump of suction capacity and working performance can also be deteriorated.Fuel tank or fuel tank are in
The hydraulic pump system of low level, hydraulic pump shut down when inlet line oil return can occur, will appear in pump chamber and inlet line air or
Person's vacuum is difficult normal oil transportation in the secondary booting of hydraulic pump, especially for the poor hydraulic pump of suction capacity using hydraulic
Starting pump, or after more renewing hydraulic pump before activation into in(-)line oiling cumbersome work.
In order to realize hydraulic pump in orderly closedown, it is full of oil liquid in fluid pressure line, is again started up convenient for hydraulic pump, sends out
Opening during hydraulic pump starts and stops automatically may be implemented in a kind of bright servo-hydraulic pumping system and automatic start-stop valve, the valve
It closes, prevents oil circuit oil return, when secondary work is not necessarily to oiling.
Summary of the invention
The technical solution adopted by the invention is as follows:
A kind of servo-hydraulic pumping system and automatic start-stop valve, including filter 1, fuel tank 2, start and stop valve 3, oil inlet pipe 4, pump 5, go out
Oil pipe line 6, control piper 7, motor 8, working machine 9；Motor 8 is operated by shaft coupling transfer tube 5；Pump 5 by oil outlet pipe 6 with
Working machine 9 connects；Filter 1 is mounted on the oil inlet pipe 4 of pump 5 far from the end of pump 5；Filter 1 and start and stop valve 3 are mounted on oil
In case 2, and it is immersed in oil liquid always；Start and stop valve 3 is mounted in the oil inlet pipe 4 between filter 1 and pump 5；Oil outlet pipe 6 with
It is connected between start and stop valve 3 by control piper 7.
Start and stop valve 3 by oil return opening 3-1, spool 3-2, horizontal spring 3-3, ball valve 3-4, uprighting spring 3-5, control mouth 3-6,
Valve chest 3-7, valve import 3-8 and valve outlet 3-9 and composition；Oil return opening 3-1, control mouth 3-6, valve import 3-8, valve outlet 3-9
It is arranged on valve chest 3-7, valve import 3-8 and valve outlet 3-9 are arranged vertically on the two sides of valve chest 3-7, center line alignment；
Uprighting spring 3-5 carries ball valve 3-4 and is encapsulated in spool 3-2, and there is conducting in two outsides of uprighting spring 3-5 and ball valve 3-4
There is another through hole parallel with via hole in hole on spool 3-2；The left side of spool 3-2 is connected with horizontal spring 3-3, oil return opening
The left side of 3-1 face spool 3-2；The right side of spool 3-2 and the inner cavity of valve chest 3-7 form oil cylinder, control mouth 3-6 face
Spool 3-2.
The pressure difference that a kind of servo-hydraulic pumping system and automatic start-stop valve generate when being worked by hydraulic pump itself was by should
Valve realizes the automatic switch during hydraulic pump starts and stops, and prevents oil circuit oil return, and when secondary work is not necessarily to oiling, saves
Time and labour, have many advantages, such as that structure is simple and economical practical；Engineering practical value with higher.
Detailed description of the invention
Servo-hydraulic pumping system Fig. 1 of the invention forms figure.
Start and stop valve closing state working drawing Fig. 2 of the invention.
Start and stop valve on state working drawing Fig. 3 of the invention.
Specific embodiment
Implementation process of the invention is described with reference to the accompanying drawing.
Such as Fig. 1, a kind of servo-hydraulic pumping system and automatic start-stop valve, by filter 1, fuel tank 2, start and stop valve 3, oil inlet pipe
4, pump 5, oil outlet pipe 6, control piper 7, motor 8, working machine 9 form；Motor 8 is operated by shaft coupling transfer tube 5；Pump 5 is logical
Oil outlet pipe 6 is crossed to connect with working machine 9；Filter 1 is mounted on the oil inlet pipe 4 of pump 5 far from the end of pump 5；It filter 1 and opens
Stop valve 3 to be mounted in fuel tank 2, and is immersed in oil liquid always；Start and stop valve 3 is mounted on the oil inlet pipe 4 between filter 1 and pump 5
In；It is connected between oil outlet pipe 6 and start and stop valve 3 by control piper 7；Constitute complete hydraulic pump system.
Such as Fig. 2, Fig. 3, start and stop valve 3 by oil return opening 3-1, spool 3-2, horizontal spring 3-3, ball valve 3-4, uprighting spring 3-5,
Control mouth 3-6, valve chest 3-7, valve import 3-8 and valve outlet 3-9 composition；Oil return opening 3-1, control mouth 3-6, valve import 3-8, valve
Outlet 3-9 is arranged on valve chest 3-7, and valve import 3-8 and valve outlet 3-9 are arranged vertically on the two sides of valve chest 3-7, center
Line alignment；Uprighting spring 3-5 carries ball valve 3-4 and is encapsulated in spool 3-2, and two outsides of uprighting spring 3-5 and ball valve 3-4 are
There is via hole, there is another through hole parallel with via hole on spool 3-2；The left side of spool 3-2 is connected with horizontal spring 3-3,
The left side of oil return opening 3-1 face spool 3-2；The right side of spool 3-2 and the inner cavity of valve chest 3-7 form oil cylinder, control mouth
3-6 face spool 3-2.
The course of work of the invention:
When hydraulic pump 5 does not work, spool 3-2 is maintained at the state being not turned on, internal uprighting spring 3-5 in start and stop valve 3
It carries ball valve 3-4 and blocks valve import 3-8；When carrying out oiling into hydraulic pump 5, motor 8 drives hydraulic pump 5 to start to work；When
When pump 5 starts running, when entering start and stop valve 3 of valve import 3-8 is passed through in oil suction from fuel tank 2, since spool 3-2 is not turned on,
Oil liquid can not be reached in hydraulic pump 5 by start and stop valve 3；There is an oil return opening 3-1 in the left side of start and stop valve 3, for the oil in valve
It is discharged in fuel tank 2, prevents from generating buffer brake to horizontal spring 3-3 in inside, and oil circuit can not be connected；The oil of injection passes through
Work operating generates pressure difference and is transported to oil outlet pipe 6 in pump, and pressure makes conveying oil in oil outlet pipe 6 by control pipeline 7
It is supplied to working machine 9；When being supplied to working machine 9, some oil enters the control piper 7 that start and stop valve 3 is connected, pressure
Power makes to convey oil into control mouth 3-6；It is fast moved to the left when hydraulic drive spool 3-2 squeezes horizontal spring 3-3, in start and stop
Oil can be also expelled back into fuel tank 2 by the oil return opening 3-1 in valve 3, when the via hole of the other side of spool 3-2 is connected to oil inlet pipe 4,
So that entire oil circuit conducting；Hydraulic pump 5 operates, and after the oil of fuel tank 2 continues through filter 1, passes through the conducting oil circuit of start and stop valve 3
It in suction pump, and is delivered in working machine 9, realizes the work of working machine 9；When motor 8 stops, the operating in pump stops, with
Generate pressure difference ends, horizontal spring 3-3 push spool 3-2 be moved to limit on the right-right-hand limit position, the uprighting spring 3-5 of spool 3-2
Oil circuit is closed with ball valve 3-4, prevents 5 oil liquid of pump from flowing back into fuel tank 2, realizes the automatic switch to oil circuit.
The working principle of the invention:
After hydraulic pump 5 starts running, using the negative pressure generated in pump conveying oil is promoted to working machine 9, allowed using negative pressure defeated
It send oil to enter control piper, reaches start and stop valve 3, the spool 3-2 of start and stop valve 3 is pushed to reach conducting orifice, reach oil circuit conducting, it is real
Existing transmission process, when motor is closed, negative pressure disappears, and pushes conveying oil without pressure, and the spool 3-2 of start and stop valve 3 is resetted,
The automatic switch during hydraulic pump starts and stops may be implemented in the valve, prevents oil circuit oil return, and when secondary work is not necessarily to oiling.
Claims (3)
1. a kind of servo-hydraulic pumping system and automatic start-stop valve, feature include by filter (1), fuel tank (2), start and stop valve (3),
Oil inlet pipe (4), pump (5), oil outlet pipe (6), control piper (7), motor (8), working machine (9) composition；Motor (8) passes through connection
Axis device transfer tube (5) operating；Pump (5) is connect by oil outlet pipe (6) with working machine (9)；Filter (1) is mounted on pump (5)
End of the oil inlet pipe (4) far from pump (5)；Filter (1) and start and stop valve (3) are mounted in fuel tank (2), and are immersed in oil liquid always
In；Start and stop valve (3) is mounted on filter (1) and pumps in the oil inlet pipe (4) between (5)；Oil outlet pipe (6) and start and stop valve (3)
Between by control piper (7) connect.
2. a kind of servo-hydraulic pumping system according to claim 1 and automatic start-stop valve, it is characterised in that: start and stop valve (3)
By oil return opening (3-1), spool (3-2), horizontal spring (3-3), ball valve (3-4), uprighting spring (3-5), control mouth (3-6), valve
Shell (3-7), valve import (3-8) and valve outlet (3-9) composition；Oil return opening (3-1), control mouth (3-6), valve import (3-8), valve
Outlet (3-9) is arranged on valve chest (3-7), and valve import (3-8) and valve outlet (3-9) are arranged vertically on valve chest (3-7)
Two sides, center line alignment；Uprighting spring (3-5) carries ball valve (3-4) and is encapsulated in spool (3-2), uprighting spring (3-5)
There is via hole with two outsides of ball valve (3-4), there is another through hole parallel with via hole on spool (3-2)；Spool (3-2)
Left side and horizontal spring (3-3) connection, the left side of oil return opening (3-1) face spool (3-2)；The right side of spool (3-2)
Oil cylinder, control mouth (3-6) face spool (3-2) are formed with the inner cavity of valve chest (3-7).
3. a kind of servo-hydraulic pumping system according to claim 1 and automatic start-stop valve, it is characterised in that: start and stop valve (3)
In spool (3-2) the negative pressure automatic open-close generated that can be worked by hydraulic pump itself prevent the oil suction road oil return of hydraulic pump
There is inflatable chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910029378.7A CN109555752A (en) | 2019-01-13 | 2019-01-13 | A kind of servo-hydraulic pumping system and automatic start-stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910029378.7A CN109555752A (en) | 2019-01-13 | 2019-01-13 | A kind of servo-hydraulic pumping system and automatic start-stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109555752A true CN109555752A (en) | 2019-04-02 |
Family
ID=65873033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910029378.7A Pending CN109555752A (en) | 2019-01-13 | 2019-01-13 | A kind of servo-hydraulic pumping system and automatic start-stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109555752A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345489A (en) * | 1979-01-12 | 1982-08-24 | Robert Bosch Gmbh | Hydraulic control system for servos in automatic transmissions |
| CN2219974Y (en) * | 1994-10-01 | 1996-02-14 | 杨业勋 | Automatic control valve for air press |
| CN2758658Y (en) * | 2004-10-11 | 2006-02-15 | 董鑫田 | Automatic control valve for household solar water heater |
| CN106609780A (en) * | 2015-10-23 | 2017-05-03 | 赵慧霞 | Single-oil-way double control hydraulic system |
| CN209444657U (en) * | 2019-01-13 | 2019-09-27 | 陕西理工大学 | The automatic start-stop valve of servo-hydraulic pumping system |
-
2019
- 2019-01-13 CN CN201910029378.7A patent/CN109555752A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345489A (en) * | 1979-01-12 | 1982-08-24 | Robert Bosch Gmbh | Hydraulic control system for servos in automatic transmissions |
| CN2219974Y (en) * | 1994-10-01 | 1996-02-14 | 杨业勋 | Automatic control valve for air press |
| CN2758658Y (en) * | 2004-10-11 | 2006-02-15 | 董鑫田 | Automatic control valve for household solar water heater |
| CN106609780A (en) * | 2015-10-23 | 2017-05-03 | 赵慧霞 | Single-oil-way double control hydraulic system |
| CN209444657U (en) * | 2019-01-13 | 2019-09-27 | 陕西理工大学 | The automatic start-stop valve of servo-hydraulic pumping system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190402 |