CN108194662B - A kind of test valve of load-sensing valve - Google Patents
A kind of test valve of load-sensing valve Download PDFInfo
- Publication number
- CN108194662B CN108194662B CN201810010450.7A CN201810010450A CN108194662B CN 108194662 B CN108194662 B CN 108194662B CN 201810010450 A CN201810010450 A CN 201810010450A CN 108194662 B CN108194662 B CN 108194662B
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- China
- Prior art keywords
- mouthfuls
- valve
- load
- spool
- adapter tube
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—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
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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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of test valves of load-sensing valve, including test valve body and third adapter tube, the test valve body includes spool, LSp mouthfuls, LS1 mouthfuls, first adapter tube, oil return opening, spring, LSv mouthfuls and the second adapter tube, the inside of the test valve is equipped with the spool, one end of the spool is provided with LSp mouthfuls described, LSp mouthfuls of the side is provided with LS1 mouthfuls, LS1 mouthfuls of the side is provided with LSv mouthfuls described, LSv mouthfuls of the side is provided with the Br interface, one end of the spool is equipped with spring, the oil return opening is provided at the top of the spring, LSp mouthfuls of the low side is equipped with second adapter tube.Structure of the invention is novel, easy to operate, by compact-sized, it is small in size, high reliablity, valve body use high-quality steel modifier treatment, and spool is handled using carburizing and quenching, surface hardness reaches 58-60HRC, wear-resisting property is good, and when tester carries out the test of load-sensing valve, not needing other operations can be tested.
Description
Technical field
The present invention relates to test valves, and in particular to a kind of test valve of load-sensing valve.
Background technique
Currently, the load sending technology application with obvious energy-saving effect is increasingly with the fast development of engineering machinery
Extensively.Load variation feedback can be arrived the control mechanism of pressure compensator and Load sensing pump by load-sensing valve, keep load
Pressure difference before and after transducer valve restriction is kept constant.That is restriction pressure difference of the pressure of hydraulic pump equal to main valve (load-sensing valve)
The sum of with load pressure, load-sensing valve output flow is only related with the opening of restriction, unrelated with load pressure, therefore load
The existing good handling of transducer valve, and have and good energy-saving effect, energy conservation gets over 20-30%, load compared to conventional throttle valve
Transducer valve can be used to constant displacement pump, it can also be used to variable pump, during load-sensing valve dispatches from the factory and tests, due to customer demand
It is different, often there is out core type (for constant displacement pump), close the multiple batches of test of core type (for variable pump) load-sensing valve.
The plunger pump for testing valve needs frequent adjustment quantitative mode and Variable Control mode.The space of plunger pump installation is again narrow,
It is brought a lot of trouble to test.
Summary of the invention
The technical problem to be solved by the present invention is to overcome existing load-sensing valve factory test during, due to visitor
Family demand it is different, often there is out core type (for constant displacement pump), more batches for closing core type (for variable pump) load-sensing valve
Secondary test.The plunger pump for testing valve needs frequent adjustment quantitative mode and Variable Control mode.Compare again in the space of plunger pump installation
Relatively narrower the problem of bringing a lot of trouble to test, provides a kind of test valve of load-sensing valve.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
The present invention provides a kind of test valve of load-sensing valve, including test valve body and third adapter tube, the tests
Valve body include spool, LSp mouthfuls, LS1 mouthfuls, the-adapter tube, oil return opening, spring, LSv mouthfuls, Br interface and second adapter tube, the survey
The inside of examination valve body is equipped with the spool, and one end of the spool is provided with LSp mouthfuls described, and LSp mouthfuls of the side is set
Be equipped with LS1 mouthfuls, LS1 mouthfuls of the side be provided with it is LSv mouthfuls described, described LSv mouthfuls-side is provided with the Br interface, described
Diameter of the spool at LSp mouthfuls is greater than spool close to the diameter of Br interface, and the other end of the spool is equipped with the bullet
Spring is provided with the oil return opening at the top of the spring, and LSp mouthfuls of the bottom end is equipped with second adapter tube, LSv mouthfuls described
Top first adapter tube is installed, the bottom end of the Br interface is equipped with third adapter tube.
As a preferred technical solution of the present invention, first adapter tube and second adapter tube are L-type.
As a preferred technical solution of the present invention, described LS1 mouthfuls connect with pump feedback port, and described LSp mouthfuls passes through institute
It states the second adapter tube and pump discharge is connected, described LSv mouthfuls passes through the LS mouth of the first adapter tube connected load transducer valve.
As a preferred technical solution of the present invention, the other end of the spool is flexibly connected the spring, the survey
Examination valve body is made using steel material.
The beneficial effects obtained by the present invention are as follows being: structure of the invention is novel, easy to operate, small in size by compact-sized,
High reliablity, valve body use high-quality steel modifier treatment, and spool is handled using carburizing and quenching, and surface hardness reaches 58-60HRC,
Wear-resisting property is good, and when tester carries out the test of load-sensing valve, not needing other operations can be tested.Reduce worker
Labor intensity, and complicated operation keeps test process simpler, without more high-quality tester, can test, survey
Examination valve body is mountable to testboard any position, and is fixed by bolts, and replaces and easy to maintenance, this valve arrangement is simple, and zero
Part is less.Processing is low with manufacturing cost, this valve has cleverly used the characteristic of load-sensing valve, mentions for the test of load-sensing valve
Better mentality of designing is supplied.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram when present invention is used for constant displacement pump；
Fig. 2 is structural schematic diagram when the present invention is pumped for variable amount；
Fig. 3 be the LSv mouth of test valve body of the invention be when closing core type load with side view platform attachment structure schematic diagram；
Fig. 4 be the LSv mouth of test valve body of the invention be when opening core type load with side view platform attachment structure schematic diagram；
Fig. 5 is the principle of the present invention structural schematic diagram；
In figure: 1, testing valve body；2, LSp mouthfuls；3, LS1 mouthfuls；4, the first adapter tube；5, Br interface；6, oil return opening；7, bullet
Spring；8, LSv mouthfuls；9, spool；10, the second adapter tube；11, third is taken over.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1
As shown in Figs. 1-5, the present invention provides a kind of test valve of load-sensing valve, including test valve body 1 and third connect
Pipe 11, test valve body 1 include spool 9, LSp mouth 2, LS1 mouth 3, the first adapter tube 4, oil return opening 6, spring 7, LSv mouth 8, Br interface
5 and second adapter tube 10, the inside of test valve body 1 is equipped with spool 9, and one end of spool 9 is provided with LSp mouth 2, and the one of LSp mouth 2
Side is provided with LS1 mouth 3, and the side of LS1 mouth 3 is provided with LSv mouth 8, and the side of LSv mouth 8 is provided with Br interface 5, spool 9 it is another
End is equipped with spring 7, and the top of spring 7 is provided with oil return opening 6, and the bottom end of LSp mouth 2 is equipped with the second adapter tube 10, LSv mouth 8
Top is equipped with the first adapter tube 4, and the bottom end of the Br interface 5 is equipped with the third adapter tube 11.
First adapter tube 4 and the second adapter tube 10 are L-type, are convenient for external pump.
LS1 mouth 3 is connect with pump feedback port, and LSp mouth 2 is connected by the second adapter tube 10 with pump discharge, and LSv mouth 8 passes through first
The LS mouth of adapter tube connected load transducer valve when carrying out the test of load-sensing valve convenient for tester, does not need other operations i.e.
It can test.Reduce the labor intensity of worker, and complicated operation, keeps test process simpler, without more high-quality
Tester can test.
The other end of spool 9 is flexibly connected spring 7, and test valve body 1 is made using steel material, and test valve body 1 uses
High-quality steel modifier treatment, spool 9 are handled using carburizing and quenching, and surface hardness reaches 58-60HRC, and wear-resisting property is good.
The device is a kind of test valve of load-sensing valve, is not connected by the LSv mouth 8 for testing valve body 1 when constant displacement pump first
It connects, is communicated with atmosphere.LS mouthfuls are to block when opening the factory of core valve.LS1 mouth 3 is connect with pump feedback port.LSp mouth 2 and pump discharge are connected,
Pressure is equal with pump discharge.High pressure oil enters the Br interface 5 of 7 part of spring on the left of valve, because spool 9 has difference in areas, Suo Youfa
Core 9 under the action of FBr power and right side spring force, tightly be located at left side, LSp mouth 2 and the connection of LS1 mouth 3, and feed back at this time
Load sensing controlled valve such as Fig. 3 of variable pump.Load-sensing valve pressure at two ends at this time on pump is equal, and passes because pumping upper load
There is spring 7 on the left of sense valve, under spring force, load sensing controlled valve does not work, and pumps use as constant displacement pump at this time.
Each performance parameter of tested valve (opening core type load-sensing valve) can test in the case, when secondly testing as variable pump
The LSv mouth 8 of test valve body 1 is connect with the LS of load-sensing valve mouth.LS1 mouth 3 is connect with pump feedback port.The effect of 2 pressure of LSv mouth
It is far longer than the difference in areas at Br interface 5 with the area in 9 left side of spool, 9 left side of spool.So acting on the power of 9 left end of spool
Overcome the power and spring force of Br interface 5, spool 9 moves to right, until restraining position, LSv mouth 8 is communicated with LS1 mouth 3 at this time, LSv mouth 8
Logical with LS, LS1 mouth 3 is communicated with load sensing controlled valve is pumped, i.e., tested valve (closing core type load-sensing valve) load pressure feedback in
Variable pump, each performance parameter of tested valve can be obtained by test at this time.
The beneficial effects obtained by the present invention are as follows being: structure of the invention is novel, easy to operate, small in size by compact-sized,
High reliablity, valve body use high-quality steel modifier treatment, and spool is handled using carburizing and quenching, and surface hardness reaches 58-60HRC,
Wear-resisting property is good, and when tester carries out the test of load-sensing valve, not needing other operations can be tested.Reduce worker
Labor intensity, and complicated operation keeps test process simpler, without more high-quality tester, can test, survey
Examination valve body is mountable to testboard any position, and is fixed by bolts, and replaces and easy to maintenance, this valve arrangement is simple, and zero
Part is less.Processing is low with manufacturing cost, this valve has cleverly used the characteristic of load-sensing valve, mentions for the test of load-sensing valve
Better mentality of designing is supplied.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of test valve of load-sensing valve, including test valve body (1) and third adapter tube (11), which is characterized in that described
Test valve body (1) includes spool (9), LSp mouthfuls (2), LS1 mouthfuls (3), the first adapter tube (4), oil return opening (6), spring (7), LSv
Mouth (8), Br interface (5) and the second adapter tube (10), the inside of test valve body (1) are equipped with the spool (9), the valve
One end of core (9) is provided with LSp mouthfuls described (2), and the side of LSp mouthfuls described (2) is provided with LS1 mouthfuls (3), LS1 mouthfuls described (3)
Side is provided with LSv mouthfuls described (8), and the side of LSv mouthfuls described (8) is provided with the Br interface (5), and the spool (9) is close
Diameter at LSp mouthfuls (2) is greater than the diameter of spool (9) at Br interface (5), and the other end installation of the spool (9) is
It states spring (7), is provided with the oil return opening (6) at the top of the spring (7), the bottom end of LSp mouthfuls described (2) is equipped with described
Two adapter tubes (10), are equipped with first adapter tube (4) at the top of LSv mouthfuls described (8), the bottom end of the Br interface (5) is equipped with institute
State third adapter tube (11).
2. a kind of test valve of load-sensing valve according to claim 1, which is characterized in that it is described first adapter tube (4) and
Second adapter tube (10) is L-type.
3. a kind of test valve of load-sensing valve according to claim 1, which is characterized in that LS1 mouthfuls described (3) and pump are anti-
Mouth connection is presented, LSp mouthful described (2) are connected by second adapter tube (10) and pump discharge, and LSv mouthfuls described (8) pass through described the
The LS mouth of one adapter tube (4) connected load transducer valve.
4. a kind of test valve of load-sensing valve according to claim 1, which is characterized in that the spool (9) it is another
End is flexibly connected the spring (7), and the test valve body (1) is made using steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010450.7A CN108194662B (en) | 2018-01-05 | 2018-01-05 | A kind of test valve of load-sensing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010450.7A CN108194662B (en) | 2018-01-05 | 2018-01-05 | A kind of test valve of load-sensing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108194662A CN108194662A (en) | 2018-06-22 |
| CN108194662B true CN108194662B (en) | 2019-09-24 |
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ID=62588414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810010450.7A Active CN108194662B (en) | 2018-01-05 | 2018-01-05 | A kind of test valve of load-sensing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN108194662B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB579906A (en) * | 1942-10-19 | 1946-08-20 | Jack & Heintz Inc | Improvements in balanced oil valves for automatic pilots |
| CH624751A5 (en) * | 1977-03-22 | 1981-08-14 | Wandfluh Ag | Five-chamber directional control valve with damping of reversal shocks |
| JPS5874972A (en) * | 1981-10-28 | 1983-05-06 | Toshiba Corp | Direction change-over valve |
| CN204213465U (en) * | 2014-10-21 | 2015-03-18 | 上海申吉仪表有限公司 | A kind of testing valve |
| CN204784848U (en) * | 2015-07-28 | 2015-11-18 | 德阳市东方自动控制成套设备有限公司 | Spin control guiding valve formula servovalve |
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2018
- 2018-01-05 CN CN201810010450.7A patent/CN108194662B/en active Active
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| Publication number | Publication date |
|---|---|
| CN108194662A (en) | 2018-06-22 |
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