CN205503594U - Prevent seal structure of piece formula multiple unit valve faying face oil leak - Google Patents
Prevent seal structure of piece formula multiple unit valve faying face oil leak Download PDFInfo
- Publication number
- CN205503594U CN205503594U CN201620147364.7U CN201620147364U CN205503594U CN 205503594 U CN205503594 U CN 205503594U CN 201620147364 U CN201620147364 U CN 201620147364U CN 205503594 U CN205503594 U CN 205503594U
- Authority
- CN
- China
- Prior art keywords
- mouth
- seal
- ring groove
- pressure feedback
- valve
- 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
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a prevent seal structure of piece formula multiple unit valve faying face oil leak, a serial communication port, including the plate valve valve body, be equipped with a pressure feedback mouthful O shape circle seal groove, P mouth O shape circle seal groove and all oilhole O shape circle seal grooves of envelope on the big terminal surface of plate valve valve body, pressure feedback mouthful O shape circle seal groove and P mouth O shape circle seal groove are concentric with the pressure feedback that corresponds mouthful, P mouth respectively, and pressure feeds back on mouth, P mouth all locate the plate valve valve body, still is equipped with the T mouth on the plate valve valve body. The utility model discloses simple structure, sealing performance are stable, the recondition expense is low, long service life, can solve the oil leak condition between the plate valve better, reduce piece formula multiple unit valve after sales maintenance expense, improve complete machine hydraulic control system's availability factor and service property (quality).
Description
Technical field
This utility model relates to a kind of sealing structure preventing sheet-type multi-way valve faying face leakage of oil, belongs to chip multichannel
Valve seals technical field of structures.
Background technology
Sheet-type multi-way valve is mainly used in the hydraulic control system of small type hydraulic excavator and other engineering machinery, is control
The important component part of system processed.In hydraulic control system, pressure-compensated valve in banked direction control valves detect load
Maximum pressure, send instruction by plunger displacement pump control valve, can according to load demand regulation hydraulic pump discharge,
Make variable pump output adapt with load, use regeneration valve oil return energy is reclaimed and recycles, when
When load necessary flow is more than the flow of pump, assignment of traffic can be given each load by system in proportion, it is achieved accurately control
System.Between plate valve, leakage of oil is the common fault of sheet-type multi-way valve, directly affect hydraulic control system efficiency and
Responsiveness thus decide complete machine service efficiency and use quality.Sheet-type multi-way valve in the market, plate valve
Between oil-in, oil return opening, control port and other hydraulic fluid port are independent sealed；Above-mentioned hydraulic fluid port seals structure
Disguise is stronger, it is impossible to from judging which hydraulic fluid port generation oil leakage phenomenon cannot make corresponding dimension at short notice
Repair scheme, thus extend the time of after-sales service；The difference of plate valve each hydraulic fluid port seal pressure, its sealing used
Material and the hardness of circle also differ, and bring certain impact to after-sales service.
Summary of the invention
The technical problems to be solved in the utility model is: provide that a kind of simple in construction, sealing property be stable, inspection
Expense of repairing is low, the sealing structure preventing sheet-type multi-way valve faying face leakage of oil of length in service life, solves between plate valve
The problem of leakage of oil situation.
In order to solve above-mentioned technical problem, the technical solution of the utility model there is provided one and prevents chip multichannel
The sealing structure of valve faying face leakage of oil, it is characterised in that include sheet valve body, the large end face of sheet valve body sets
There are pressure feedback mouth seal with O ring groove, P mouth seal with O ring groove and envelope all oilholes seal with O ring groove,
Pressure feedback mouth seal with O ring groove and P mouth seal with O ring groove respectively with corresponding pressure feedback mouth, P mouth
With one heart, pressure feedback mouth, P mouth are all located on plate valve valve body, and sheet valve body is additionally provided with T mouth.
Preferably, described pressure feedback mouth seal with O ring groove, P mouth seal with O ring groove are all located at envelope
In the middle of all oilhole seal with O ring grooves.
Preferably, described pressure feedback mouth seal with O ring groove matches with pressure feedback mouth O, institute
The P mouth seal with O ring groove stated matches with P mouth O, described envelope all oilholes seal with O ring
Groove oilhole all with envelope O matches.
This utility model simple in construction, sealing property are stable, the cost of overhaul is low, service life is long, can be preferably
Solve the leakage of oil situation between plate valve, reduce sheet-type multi-way valve after-sales service expense, improve complete machine hydraulic control system
Service efficiency and use quality.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of sealing structure preventing sheet-type multi-way valve faying face leakage of oil；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the scheme of installation of a kind of sealing structure preventing sheet-type multi-way valve faying face leakage of oil；
Fig. 4 is the A-A sectional view of Fig. 3；
Fig. 5 is the sealing principle figure of a kind of sealing structure preventing sheet-type multi-way valve faying face leakage of oil.
Detailed description of the invention
For making this utility model become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
This utility model is a kind of sealing structure preventing sheet-type multi-way valve faying face leakage of oil, institute as shown in Figure 1, Figure 2
Showing, it includes that sheet valve body 1-7, the large end face of sheet valve body 1-7 are provided with pressure feedback mouth seal with O ring
Groove 1-2, P mouth seal with O ring groove 1-4 and envelope all oilholes seal with O ring groove 1-5, meanwhile, T mouth
Seal with O ring groove is not had at 1-6.Pressure feedback mouth seal with O ring groove 1-2 and P mouth seal with O ring groove
1-4 is concentric with corresponding hydraulic fluid port (i.e. pressure feedback mouth 1-1, P mouth 1-3) respectively.Pressure feedback mouth O
Seal groove 1-2, P mouth seal with O ring groove 1-4 is all located in the middle of envelope all oilholes seal with O ring groove 1-5.
Pressure feedback mouth 1-1, P mouth 1-3 is all located on plate valve valve body 1-7, and sheet valve body 1-7 is additionally provided with T mouth
1-6。
As shown in Figure 3, Figure 4, pressure feedback mouth O is installed in pressure feedback mouth seal with O ring groove 1-2
2-1.P mouth O 2-2 is installed in P mouth seal with O ring groove 1-4.Envelope all oilholes seal with O ring
Envelope all oilholes O 2-3 is installed in groove 1-5.Mouth seal with O ring groove 1-2 is anti-with pressure for pressure feedback
Feedback mouth O 2-1 matches, and P mouth seal with O ring groove 1-4 and P mouth O 2-2 matches, envelope
All oilhole seal with O ring groove 1-5 oilhole all with envelope O 2-3 matches.
Principle of the present utility model is: seal as it is shown in figure 5, utilize envelope all oilholes O 2-3 to be formed
Structure, flows into the hydraulic oil 3-1 leaked out from pressure feedback mouth O 2-1 and P mouth O 2-2
To T mouth 1-6.
During use, owing to the operating mode of complete machine work is complicated, the time of work constantly extends, O at high pressure and
Under the effect of high temperature, sealing property reduces, and hydraulic oil will be from pressure feedback mouth O 2-1 and P mouth O
Leaking at shape circle 2-2, seal owing to envelope all oilholes O 2-3 is formed, T mouth 1-6 is not provided with
Seal with O ring groove, the hydraulic oil 3-1 of above-mentioned generation leakage can only flow near the T mouth 1-6 of low oil pressure region,
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 at 3bar.Above-mentioned generation
The hydraulic oil 3-1 stream of leakage all flows to fuel tank.Envelope all oilholes O 2-3 is at high temperature and 3bar pressure
Under, there is good sealing property equally, it is the most sharp that the hydraulic oil 3-1 of above-mentioned generation leakage can only flow to fuel tank
With.
Use after this utility model as shown in the table compared to the progress of prior art:
Claims (3)
1. the sealing structure preventing sheet-type multi-way valve faying face leakage of oil, it is characterised in that include 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 oilholes seal with O ring groove (1-5), pressure feedback mouth O
Seal 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, and pressure feedback mouth (1-1), P mouth (1-3) are all located on plate valve valve body (1-7), sheet
T mouth (1-6) it is additionally provided with on valve body (1-7).
A kind of sealing structure preventing sheet-type multi-way valve faying face leakage of oil, its feature exists
In, described pressure feedback mouth seal with O ring groove (1-2), P mouth seal with O ring groove (1-4) are all located at
In the middle of envelope all oilholes seal with O ring groove (1-5).
A kind of sealing structure preventing sheet-type multi-way valve faying face leakage of oil, its feature exists
In, described pressure feedback mouth seal with O ring groove (1-2) matches with pressure feedback mouth O (2-1),
Described P mouth seal with O ring groove (1-4) and P mouth O (2-2) matches, described envelope institute
Oilhole seal with O ring groove (1-5) oilhole all with envelope O (2-3) is had to match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147364.7U CN205503594U (en) | 2016-02-26 | 2016-02-26 | Prevent seal structure of piece formula multiple unit valve faying face oil leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147364.7U CN205503594U (en) | 2016-02-26 | 2016-02-26 | Prevent seal structure of piece formula multiple unit valve faying face oil leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205503594U true CN205503594U (en) | 2016-08-24 |
Family
ID=56726874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620147364.7U Active CN205503594U (en) | 2016-02-26 | 2016-02-26 | Prevent seal structure of piece formula multiple unit valve faying face oil leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205503594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570223A (en) * | 2016-02-26 | 2016-05-11 | 龙工（上海）精工液压有限公司 | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil |
-
2016
- 2016-02-26 CN CN201620147364.7U patent/CN205503594U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570223A (en) * | 2016-02-26 | 2016-05-11 | 龙工（上海）精工液压有限公司 | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202149104U (en) | Hydraulic oil cooling device | |
| CN103912540A (en) | Hydraulic oil temperature control system and engineering machinery | |
| CN102213201B (en) | High-efficiency concrete or coal slurry conveying system, control method thereof, and two-position three-way hydraulically-controlled directional control valve applied to high-efficiency concrete or coal slurry conveying system | |
| CN205503594U (en) | Prevent seal structure of piece formula multiple unit valve faying face oil leak | |
| CN203175839U (en) | Hydraulic balance type boosting water injection pump | |
| CN205918670U (en) | Beat sign indicating number hydraulic press hydraulic control system | |
| CN209483718U (en) | Hydraulic headstock gear hydraulic control system with oil-supplementing system | |
| CN105570223A (en) | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil | |
| CN105422539A (en) | Two-circuit multi-way directional valve and in-parallel installation method of two-circuit multi-way directional valve with oil cylinders | |
| CN201884233U (en) | Pneumatic reciprocating pump | |
| CN103821782A (en) | Six-cavity dual-medium pressure conversion hydraulic system | |
| CN204253906U (en) | A kind of Novel hydraulic valve | |
| CN204346820U (en) | A kind of hydraulic testing hydraulic floating end socket | |
| CN203594871U (en) | Novel pneumatic adjusting valve | |
| CN203743096U (en) | Six-cavity double-medium pressure conversion hydraulic system | |
| CN210118293U (en) | Adjustable ejector for medium-high pressure industrial steam supply | |
| CN203174660U (en) | Load-sensitive control system of loading machine | |
| CN203395340U (en) | Low-resistance direct-flowing type hydraulic control valve | |
| CN207213600U (en) | Gas supply oiling lubricating arrangement | |
| CN102619729B (en) | Waste heat recovery system for air compressor | |
| CN202188185U (en) | One-piece water saving pad and water saving apparatus | |
| CN205714467U (en) | Thermomotor hydraulic diaphragm sealing system | |
| CN213540882U (en) | Novel integrated diaphragm valve type servomotor | |
| CN201083269Y (en) | Double-piston water turbine water-feeding hydraulic double-sealing butterfly valve | |
| CN208131293U (en) | A kind of efficient centrifugal machine oil scraper ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |