CN105570223A - Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil - Google Patents
Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil Download PDFInfo
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- CN105570223A CN105570223A CN201610108175.3A CN201610108175A CN105570223A CN 105570223 A CN105570223 A CN 105570223A CN 201610108175 A CN201610108175 A CN 201610108175A CN 105570223 A CN105570223 A CN 105570223A
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- Prior art keywords
- mouth
- pressure feedback
- seal
- ring groove
- oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil. The sealing structure is characterized by comprising chip valve bodies; pressure feedback port O-shaped ring sealing grooves, P port O-shaped ring sealing grooves and O-shaped ring sealing grooves for enveloping all oil holes are formed in large end surfaces of the chip valve bodies; the pressure feedback port O-shaped ring sealing grooves and the P port O-shaped ring sealing grooves are respectively concentric with corresponding pressure feedback ports and P ports; the pressure feedback ports and the P ports are both arranged on the chip valve bodies; and T ports are formed in the chip valve bodies. The sealing structure is simple in structure, stable in sealing performance, low in maintenance cost and long in service life, can preferably solve the oil leakage condition among the chip valves, reduces the after-sales repair cost of the chip type milti-way valves, and improves the use efficiency and the use quality of a whole hydraulic control system.
Description
Technical field
The present invention relates to a kind of sealing configuration preventing the leakage of oil of sheet-type multi-way valve junction plane, belong to sheet-type multi-way valve sealing configuration technical field.
Background technique
Sheet-type multi-way valve is mainly used in the hydraulic control system of small type hydraulic excavator and other engineering machinery, is the important component part of control system.In hydraulic control system, the maximum pressure of load is detected by pressure-compensated valve in multi-way valve, instruction is sent by plunger pump control valve, can according to the demand regulator solution pump displacement of load, variable displacement pump output power and load are adapted, adopt regeneration valve to reclaim oil return energy and recycle, when flow needed for load is greater than the flow of pump, assignment of traffic can be given each load by system in proportion, realize accurately controlling.Between plate valve, leakage of oil is the common fault of sheet-type multi-way valve, directly affects the efficiency of hydraulic control system and responsiveness thus decides utilization efficiency and the service property (quality) of complete machine.Sheet-type multi-way valve in the market, the filler opening between plate valve, return opening, control port and other hydraulic fluid port are independent sealed; Above-mentioned hydraulic fluid port sealing configuration disguise is comparatively strong, cannot cannot make corresponding maintenance program, thus extend the time of after-sales service from judging which hydraulic fluid port generation oil leakage phenomenon at short notice; The difference of each hydraulic fluid port sealing load of plate valve, the material of its seal ring used and hardness are not identical yet, bring certain impact to after-sales service.
Summary of the invention
The technical problem to be solved in the present invention is: provide that a kind of structure is simple, sealability is stablized, recondition expense is low, the sealing configuration preventing the leakage of oil of sheet-type multi-way valve junction plane of long service life, solves the problem of the leakage of oil situation between plate valve.
In order to solve the problems of the technologies described above, technological scheme of the present invention there is provided a kind of sealing configuration preventing the leakage of oil of sheet-type multi-way valve junction plane, it is characterized in that, comprise sheet valve body, the large end face of sheet valve body is provided with pressure feedback mouth seal with O ring groove, P mouth seal with O ring groove and envelope all oilhole seal with O rings groove, pressure feedback mouth seal with O ring groove and P mouth seal with O ring groove are concentric with corresponding pressure feedback mouth, P mouth respectively, pressure feedback mouth, P mouth are all located on sheet valve body, and sheet valve body is also provided with T mouth.
Preferably, described pressure feedback mouth seal with O ring groove, P mouth seal with O ring groove are all located in the middle of envelope all oilhole seal with O rings groove.
Preferably, described pressure feedback mouth seal with O ring groove and pressure feedback mouth O shape are enclosed and are matched, and described P mouth seal with O ring groove and P mouth O shape are enclosed and matched, and described envelope all oilholes seal with O ring groove and envelope all oilhole O shape are enclosed and matched.
Structure of the present invention is simple, sealability stable, recondition expense is low, long service life, can solve the leakage of oil situation between plate valve better, reduces sheet-type multi-way valve after-sales service expense, improves utilization efficiency and the service property (quality) of complete machine hydraulic control system.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram preventing the sealing configuration of sheet-type multi-way valve junction plane leakage of oil;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is a kind of scheme of installation preventing the sealing configuration of sheet-type multi-way valve junction plane leakage of oil;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is a kind of sealing principle figure preventing the sealing configuration of sheet-type multi-way valve junction plane leakage of oil.
Embodiment
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The present invention is a kind of sealing configuration preventing the leakage of oil of sheet-type multi-way valve junction plane, as shown in Figure 1 and Figure 2, it comprises sheet valve body 1-7, the large end face of sheet valve body 1-7 is provided with pressure feedback mouth seal with O ring groove 1-2, P mouth seal with O ring groove 1-4 and envelope all oilhole seal with O rings groove 1-5, meanwhile, T mouth 1-6 place does not have seal with O ring groove.The hydraulic fluid port (i.e. pressure feedback mouth 1-1, P mouth 1-3) of pressure feedback mouth seal with O ring groove 1-2 and P mouth seal with O ring groove 1-4 respectively with corresponding is concentric.Pressure feedback mouth seal with O ring groove 1-2, P mouth seal with O ring groove 1-4 is all located in the middle of envelope all oilhole seal with O rings groove 1-5.Pressure feedback mouth 1-1, P mouth 1-3 is all located on sheet valve body 1-7, sheet valve body 1-7 is also provided with T mouth 1-6.
As shown in Figure 3, Figure 4, setting pressure feedback port O shape circle 2-1 in pressure feedback mouth seal with O ring groove 1-2.P mouth O shape circle 2-2 is installed in P mouth seal with O ring groove 1-4.Envelope all oilhole O shape circle 2-3 is installed in envelope all oilholes seal with O ring groove 1-5.Pressure feedback mouth seal with O ring groove 1-2 and pressure feedback mouth O shape are enclosed 2-1 and are matched, and P mouth seal with O ring groove 1-4 and P mouth O shape are enclosed 2-2 and matched, and envelope all oilholes seal with O ring groove 1-5 and envelope all oilhole O shape are enclosed 2-3 and matched.
Principle of the present invention is: as shown in Figure 5, utilizes envelope all oilhole O shape to enclose 2-3 and forms sealing configuration, and the hydraulic oil 3-1 leaked out from pressure feedback mouth O shape circle 2-1 and P mouth O shape circle 2-2 is flow into T mouth 1-6.
During use, because the operating mode of complete machine work is complicated, the time of work constantly extends, O shape circle is under the effect of high pressure and high temperature, and sealability reduces, and high pressure oil will leak from pressure feedback mouth O shape circle 2-1 and P mouth O shape circle 2-2, because envelope all oilhole O shape circle 2-3 forms sealing, T mouth 1-6 is not provided with seal with O ring groove, and the hydraulic oil 3-1 that above-mentioned generation is leaked can only flow near the T mouth 1-6 of low oil pressure region, and oil pressure is also reduced to magnitude of back pressure.T mouth 1-6 is directly connected with fuel tank, and oil pressure is constant in 3b
ar.The hydraulic oil 3-1 stream that above-mentioned generation is leaked all flows to fuel tank.Envelope all oilhole O shape circle 2-3 is at high temperature and 3b
arunder pressure, have good sealability equally, the hydraulic oil 3-1 that above-mentioned generation is leaked can only flow to fuel tank and be utilized.
As shown in the table compared to the progress of prior art after using the present invention:
Claims (3)
1. one kind prevents the sealing configuration of sheet-type multi-way valve junction plane leakage of oil, it is characterized in that, comprise sheet valve body (1-7), the large end face of sheet valve body (1-7) is provided with pressure feedback mouth seal with O ring groove (1-2), P mouth seal with O ring groove (1-4) and envelope all oilhole seal with O rings groove (1-5), pressure feedback mouth seal with O ring groove (1-2) and P mouth seal with O ring groove (1-4) respectively with corresponding pressure feedback mouth (1-1), P mouth (1-3) is concentric, pressure feedback mouth (1-1), P mouth (1-3) is all located on sheet valve body (1-7), sheet valve body (1-7) is also provided with T mouth (1-6).
2. a kind of sealing configuration preventing the leakage of oil of sheet-type multi-way valve junction plane as claimed in claim 1, it is characterized in that, described pressure feedback mouth seal with O ring groove (1-2), P mouth seal with O ring groove (1-4) are all located in the middle of envelope all oilhole seal with O rings groove (1-5).
3. a kind of sealing configuration preventing the leakage of oil of sheet-type multi-way valve junction plane as claimed in claim 1, it is characterized in that, described pressure feedback mouth seal with O ring groove (1-2) and pressure feedback mouth O shape are enclosed (2-1) and are matched, described P mouth seal with O ring groove (1-4) and P mouth O shape are enclosed (2-2) and are matched, and described envelope all oilholes seal with O ring groove (1-5) and envelope all oilhole O shape are enclosed (2-3) and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108175.3A CN105570223A (en) | 2016-02-26 | 2016-02-26 | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108175.3A CN105570223A (en) | 2016-02-26 | 2016-02-26 | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105570223A true CN105570223A (en) | 2016-05-11 |
Family
ID=55880722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610108175.3A Pending CN105570223A (en) | 2016-02-26 | 2016-02-26 | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570223A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566530A (en) * | 2019-09-06 | 2019-12-13 | 烟台中宇航空液压有限公司 | Oil leakage prevention device for electro-hydraulic servo valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010169230A (en) * | 2009-01-26 | 2010-08-05 | Hitachi Constr Mach Co Ltd | Multiple valve apparatus |
| CN201739597U (en) * | 2010-07-27 | 2011-02-09 | 重庆液动科技有限公司 | Multi-way valve sealing device |
| CN203394910U (en) * | 2013-07-04 | 2014-01-15 | 瑞立集团瑞安汽车零部件有限公司 | Follow-up valve |
| CN203948741U (en) * | 2014-05-21 | 2014-11-19 | 航天长征化学工程股份有限公司 | A kind of three-way diverter valve |
| CN204114124U (en) * | 2014-09-04 | 2015-01-21 | 徐州徐工液压件有限公司 | A kind of hydraulic element leak tight seal |
| CN204226324U (en) * | 2014-11-24 | 2015-03-25 | 泸州众大科技液压件有限公司 | A kind of minitype high-performance combination brake switch and proporting adopting linear compensation sealing configuration |
| CN205503594U (en) * | 2016-02-26 | 2016-08-24 | 龙工（上海）精工液压有限公司 | Prevent seal structure of piece formula multiple unit valve faying face oil leak |
-
2016
- 2016-02-26 CN CN201610108175.3A patent/CN105570223A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010169230A (en) * | 2009-01-26 | 2010-08-05 | Hitachi Constr Mach Co Ltd | Multiple valve apparatus |
| CN201739597U (en) * | 2010-07-27 | 2011-02-09 | 重庆液动科技有限公司 | Multi-way valve sealing device |
| CN203394910U (en) * | 2013-07-04 | 2014-01-15 | 瑞立集团瑞安汽车零部件有限公司 | Follow-up valve |
| CN203948741U (en) * | 2014-05-21 | 2014-11-19 | 航天长征化学工程股份有限公司 | A kind of three-way diverter valve |
| CN204114124U (en) * | 2014-09-04 | 2015-01-21 | 徐州徐工液压件有限公司 | A kind of hydraulic element leak tight seal |
| CN204226324U (en) * | 2014-11-24 | 2015-03-25 | 泸州众大科技液压件有限公司 | A kind of minitype high-performance combination brake switch and proporting adopting linear compensation sealing configuration |
| CN205503594U (en) * | 2016-02-26 | 2016-08-24 | 龙工（上海）精工液压有限公司 | Prevent seal structure of piece formula multiple unit valve faying face oil leak |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566530A (en) * | 2019-09-06 | 2019-12-13 | 烟台中宇航空液压有限公司 | Oil leakage prevention device for electro-hydraulic servo valve |
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Application publication date: 20160511 |
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| WD01 | Invention patent application deemed withdrawn after publication |