CN104514764A - Integral multi-way valve with zero-leakage pollution-resistant integral hydraulic locks - Google Patents
Integral multi-way valve with zero-leakage pollution-resistant integral hydraulic locks Download PDFInfo
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- CN104514764A CN104514764A CN201510038703.8A CN201510038703A CN104514764A CN 104514764 A CN104514764 A CN 104514764A CN 201510038703 A CN201510038703 A CN 201510038703A CN 104514764 A CN104514764 A CN 104514764A
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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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Abstract
The invention discloses an integral multi-way valve with zero-leakage pollution-resistant integral hydraulic locks. The integral multi-way valve comprises an oil inlet valve sheet, a plurality of working valve sheets and an oil return valve sheet, wherein the working valve sheets are arranged between the oil inlet valve sheet and the oil return valve sheet; the oil inlet valve sheet, the working valve sheets and the oil return valve sheet form an integral structure; an oil inlet P is formed in the oil inlet valve sheet, and an oil return hole T is formed in the oil return valve sheet; one or two working oil holes are formed in each working valve sheet; a valve rod is inserted into the working valve sheet; the integral hydraulic lock, the valve rod, a dual-lock hydraulic control push rod and a rear plug are arranged in the working valve sheet; the integral hydraulic lock comprises a steel lock valve seat, a lock valve element, a lock valve sleeve and a return spring. The integral multi-way valve has the advantages that the oil leakage risk can be lowered, the internal leakage can be avoided, the working reliability of the valve can be improved, the processing process is simplified, and the processing cost is reduced.
Description
This application claims and submit to Patent Office of the People's Republic of China, name to be called " integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage " on August 19th, 2014 and application number is the preference of the Chinese invention patent application of CN201410410297.9, the full content of this application combines in this application by reference.
Technical field
The present invention relates to a kind of multi-way valve, especially a kind of integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage.
Background technique
Results are links that in agricultural production process, seasonality is strong, the amount of labour used is many, labor intensity is larger.In production practices, results are usually tightly connected with the sowing of next batch of crop again.Peasant's conventional " rush-harvesting and rush-planting " likens the pressing degree of operation, and is linked together in it and high yield good harvest.Along with national economy, the particularly development of rural economy and agricultural productive force, the cry of peasant to rice and wheat harvester tool grows to even greater heights, and the function and significance of harvesting mechanization is just obtaining the understanding of more and more people.In harvest machinery industry, hydraulics obtains and applies more and more widely, the application percentage of hydraulic transmission is increasing, hydraulic operation has not been simply replace traditional pure mechanical transmission, and be the introduction of design principle and the structure of a series of advanced person, become the indivisible organic component of harvest machinery, make harvest machinery have good operating characteristics, agricultural technology requirement can be met preferably.Therefore this project market foreground is wide, has good social economic benefit.Harvest machinery was time point intensive work about month, and the reliability of machine determines time and the quality of results during this period.And hydraulic transmission is as important composition our department of machinery three large transmissions, playing a part more and more important.The reliability of hydraulic pressure is govern the development of the performance of complete machine, so design now hydraulic element more reliably, to main frame particularly harvest machinery have the effect of particular importance.
The integral multitandem valve that DLT series is provided with the resistant to pollution integral hydraulic lock of zero leakage is widely used on farm machinery, is mainly used for meeting the rise and fall of actuator and unidirectional locking.Pilot operated check valve is integrated in working body by this multi-way valve, compact structure, and operating life is high, decreases the layout of hydraulic system pipeline simultaneously.
At present, existing farm machinery multi-way valve, adopts split-type structural more.As shown in Figures 6 and 7, existing multi-way valve is made up of parts such as oil-feed valve block 1, multiple work valve block 2 and oil return valve blocks 3, between two adjacent valve blocks, seal ring 4 between sheet is adopted to seal, seal ring between needing multiple, therefore between sheet, the Hazard ratio of leakage of oil is comparatively large, and the functional reliability of multi-way valve is poor.Mode with bolts between valve block, is fastened as a whole described oil-feed valve block 1, multiple work valve block 2 and oil return valve block 3 by four clamping bolts 5.The multi-way valve of this split-type structural, need first by Split assembled, and then machining hole; Because valve body is when urgent, valve main aperture has the distortion of trace, causes valve rod to occur catching phenomenon when filling examination; So need separable assembled integrally after, need to revise the size of main aperture, ensure the flexibility of stem movement.
In existing multi-way valve, include Split type hydraulic lock, as shown in Figure 7.This Split type hydraulic locks the assembly limited location bar 19, steel ball 20, nylon seat 21 etc. that comprise.Because nylon seat material is softer, easily at surperficial card impurity, thus cause between steel ball and nylon seat, occurring poorly sealed phenomenon, let out in generation, thus have impact on the functional reliability of multi-way valve.And valve seat, between nylon seat and multi-way valve, only adopt seal ring sealing.In multi-way valve working procedure, the oil pressure of high pressure oil constantly converts seal ring and likely under the effect of high pressure oil, is extruded generation deformation, is even likely extruded.This just makes the seal failure between hydraulic lock and multi-way valve, thus causes high pressure oil to reveal, and reduces functional reliability and the Security of multi-way valve.
Summary of the invention
The present invention is for avoiding the deficiency that exists in above-mentioned prior art, provides a kind of integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage, to reduce the risk of leakage of oil, to improve the functional reliability of valve.
The present invention be technical solution problem by the following technical solutions.
Be provided with the integral multitandem valve of the resistant to pollution integral hydraulic lock of zero leakage, its structural feature is, comprises an oil-feed valve block, multiple work valve block and an oil return valve block; Described multiple work valve block is arranged between described oil-feed valve block and described oil return valve block; Described oil-feed valve block, multiple work valve block and oil return valve block are monolithic construction; Described oil-feed valve block is provided with oil inlet P, described oil return valve block is provided with oil return inlet T; Each work valve block of described multiple work valve block is provided with one or two actuator port; Be inserted with a valve rod within each work valve block of described multiple work valve block, one end of described valve rod stretches out in outside described work valve block;
Integral hydraulic lock, valve rod, twin-lock hydraulic control push rod and rear plug is provided with in shown work valve block; Be provided with valve pocket in described work valve block, described valve rod, twin-lock hydraulic control push rod, rear plug and integral hydraulic lock is all located within described valve pocket; Wherein, described integral hydraulic lock, twin-lock hydraulic control push rod and rear plug set gradually from left to right;
Shown integral hydraulic lock comprises steel locking-valve seat, locking-valve core, locking-valve cover and Returnning spring; The right-hand member of described steel locking-valve seat is provided with stepped shaft inner chamber, the left part of described locking-valve cover is inserted in the stepped shaft inner chamber of described steel locking-valve seat, the inside of described locking-valve cover is provided with locking-valve cover valve pocket, described locking-valve cover valve pocket is positioned at the left end of described locking-valve cover, described locking-valve core is arranged in described locking-valve cover valve pocket, the left side of the left end of described Returnning spring and the stepped shaft inner chamber of described steel locking-valve seat abuts against, and right-hand member and the described locking-valve core of described Returnning spring abut against.
The structural feature being provided with the integral multitandem valve of the resistant to pollution integral hydraulic lock of zero leakage of the present invention is also:
The stepped shaft inner chamber of described steel locking-valve seat is made up of two endoporus, and two endoporus comprise the first endoporus and the second endoporus; The inner peripheral surface of described first endoporus is provided with internal thread, and the outside thread on the left end outer circumferential face that described internal thread and described locking-valve overlap matches; The left part of described Returnning spring is inserted among described second endoporus.
The outer circumferential face of described steel locking-valve seat is provided with annular groove, is provided with seal ring and back-up ring in described annular groove.
The outer circumferential face of described locking-valve cover is equipped with annular groove, in described annular groove, is provided with seal ring and back-up ring.
Described seal ring all adopts rubber seal.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage of the present invention, has following technological merit.
(1) oil-feed valve block, work valve block and oil return valve block are set to monolithic construction, global formation, decrease the risk of leakage of oil between sheet, improve the functional reliability of multi-way valve.
(2) without the need to punching on valve block, eliminating clamping bolt, simplifying processing technology, shorten the manufacture cycle.
(3) owing to adopting integral hydraulic lock to instead of Split type hydraulic lock, the valve seat of integral hydraulic lock adopts steel matter, locking-valve core adopts cone valve structure, and the seal of locking-valve can not be affected because of the impurity in hydraulic oil for linear sealing makes integral hydraulic lock, thus make multi-way valve have good stain resistance, avoid multi-way valve and occur internal leakage phenomenon.Integral multitandem valve of the present invention, owing to adopting, above-mentioned integral hydraulic is locked, the combined sealing structure of seal ring and back-up ring, locking-valve core and described locking-valve adopt the technological improvements such as linear sealing structure between overlapping, experiment proves the zero leakage that can realize multi-way valve, and compared with the nylon seat of prior art, there is good stain resistance.
The integral multitandem valve being provided with zero leakage resistant to pollution integral hydraulic lock of the present invention, have can reduce leakage of oil risk, avoid internal leakage, improve the functional reliability of valve, simplify processing technology, reduce the advantages such as processing cost.
Accompanying drawing explanation
Fig. 1 is the outline drawing being provided with the integral multitandem valve of the resistant to pollution integral hydraulic lock of zero leakage of the present invention.
Fig. 2 is the sectional view (valve rod is in meta working position, and oil cylinder is in and keeps level altitude state) of the A-A of Fig. 1.
Fig. 3 is the sectional view (valve rod is in lifting working position, and oil cylinder is in propradation) of the A-A of Fig. 1.
Fig. 4 is the sectional view (valve rod is in decline working position, and oil cylinder is in decline state) of the A-A of Fig. 1.
Fig. 5 is the sectional view being provided with the integral hydraulic lock of the integral multitandem valve of the resistant to pollution integral hydraulic lock of zero leakage of the present invention.
Fig. 6 is the structural drawing of the Split multi-way valve of prior art.
Fig. 7 is the sectional view of the B-B of Fig. 6.
Label in accompanying drawing 1 ~ accompanying drawing 7: 1 oil-feed valve block, 2 work valve blocks, 3 oil return valve blocks, sealing gasket between 4,5 clamping bolts, 6 oil inlet P, 7 actuator ports, 8 oil return inlet T, 9 valve rods, 10 integral hydraulic locks, 11 twin-lock hydraulic control push rods, plug after 12,13 valve pockets, 14 steel locking-valve seats, 1,401 first endoporus, 1,402 second endoporus, 15 locking-valve cores, 16 locking-valve covers, 17 Returnning springs, 18 seal rings, 19 position-limited levers, 20 steel balls, 21 nylon seats, 22 back-up rings.
Below by way of embodiment, and the invention will be further described by reference to the accompanying drawings.
Embodiment
See accompanying drawing 1-5, the integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage of the present invention, comprises an oil-feed valve block 1, multiple work valve block 2 and an oil return valve block 3; Described multiple work valve block 2 is arranged between described oil-feed valve block 1 and described oil return valve block 3; Described oil-feed valve block 1, multiple work valve block 2 and oil return valve block 3 are monolithic construction; Described oil-feed valve block 1 is provided with oil inlet P 6, described oil return valve block 3 is provided with oil return inlet T 8; Each work valve block 2 of described multiple work valve block 2 is provided with one or two actuator port 7; Be inserted with a valve rod 9 within each work valve block 2 of described multiple work valve block 2, one end of described valve rod 9 stretches out in outside described work valve block 2;
Integral hydraulic lock 10, valve rod 9, twin-lock hydraulic control push rod 11 and rear plug 12 is provided with in shown work valve block 2; Be provided with valve pocket 13 in described work valve block 2, described valve rod 9, twin-lock hydraulic control push rod 11, rear plug 12 and integral hydraulic lock 10 is all located within described valve pocket 13; Wherein, described integral hydraulic lock 10, twin-lock hydraulic control push rod 11 and rear plug 12 set gradually from left to right;
Shown integral hydraulic lock 10 comprises steel locking-valve seat 14, locking-valve core 15, locking-valve cover 16 and Returnning spring 17; The right-hand member of described steel locking-valve seat 14 is provided with stepped shaft inner chamber, the left part of described locking-valve cover 16 is inserted in the stepped shaft inner chamber of described steel locking-valve seat 14, the inside of described locking-valve cover 16 is provided with locking-valve cover valve pocket, described locking-valve cover valve pocket is positioned at the left end of described locking-valve cover 16, described locking-valve core 15 is arranged in described locking-valve cover valve pocket, the left side of the left end of described Returnning spring 17 and the stepped shaft inner chamber of described steel locking-valve seat 14 abuts against, and right-hand member and the described locking-valve core 15 of described Returnning spring 17 abut against.
The stepped shaft inner chamber of described steel locking-valve seat 14 is made up of two endoporus, and two endoporus comprise the first endoporus 1401 and the second endoporus 1402; The inner peripheral surface of described first endoporus 14 is provided with internal thread, and the outside thread that described internal thread overlaps on the left end outer circumferential face of 16 with described locking-valve matches; The left part of described Returnning spring 17 is inserted among described second endoporus 1402.
As Fig. 1, this multi-way valve is set to monolithic construction, and oil-feed valve block, multiple work valve block and oil return valve block have made an entirety.Do not need to combine one by one, do not need bolton yet, without the need to arranging seal ring between sheet in addition between valve block yet.Compare with existing Split multi-way valve, there is the advantage of the following aspects: (1) eliminates seal ring between sheet, saved cost, avoid the problem sealing between sheet and tightly do not cause leakage of oil simultaneously, improve the functional reliability of multi-way valve; (2) without the need to punching on valve block, eliminating clamping bolt, simplifying processing technology, shorten the manufacture cycle.
Integral multitandem valve of the present invention is integrated type product, by No. five valve global formations, reduces the risk of leakage of oil between sheet.Technique decreases overall fraising technique simultaneously, greatly shorten the manufacture cycle.
The left end of described locking-valve core is provided with blind hole, and the right part of described Returnning spring to be inserted within described blind hole from the left end of described locking-valve core and abutted against with the right side of described blind hole.The outer circumferential face of the right part of described locking-valve core is taper.The face of matching with described locking-valve cover due to locking-valve core is cylindrical surface, locking-valve core can be moved neatly in locking-valve cover, improve the flexibility of multi-way valve.
The inner peripheral surface that the outer circumferential face of the right part of locking-valve core and described locking-valve overlap abuts against, and at the abutting place of the two, the surface of contact of locking-valve core is conical surface, and the surface of contact that locking-valve puts is arc shaped surface, is therebetween linear sealing.Even if there is impurity to exist, on the potted line position that impurity is stuck in linear sealing, possibility is very little, and therefore sealing effect is very good.
Due to the right-hand member cavity of steel locking-valve seat is set to stepped shaft inner chamber, a part for described Returnning spring 17 is inserted in the second endoporus 1402 of described stepped shaft inner chamber, therefore can make between steel locking-valve seat 14, locking-valve core 15, locking-valve cover 16 more compact, the left and right straight length of integral hydraulic lock is less, this integral hydraulic is locked and is more suitable for plugging between multi-way valve.
Steel locking-valve seat, locking-valve core, locking-valve cover and Returnning spring that integral hydraulic is locked are a kind of locking-valves of monolithic construction, be arranged between integral hydraulic lock actuator port and multichannel valve pocket, architomia formula hydraulic lock is instead of owing to adopting integral hydraulic lock, the valve seat of integral hydraulic lock adopts steel matter, locking-valve core adopts cone valve structure, and for linear sealing make locking-valve can not affect because of the impurity in hydraulic oil integral hydraulic lock seal, thus make multi-way valve have good stain resistance, avoid multi-way valve and occur internal leakage phenomenon.Integral hydraulic is locked, and material adopts 40Cr, heat treatment hardness (45 ~ 50) HRC.Not easily contaminated clamping stagnation, lets out in causing.And integrated type is relative to split type, be more prone in maintenance and fit on.
As the sectional view that Fig. 2 is the A-A in Fig. 1, now valve rod is in meta working position, and oil cylinder is in and keeps level altitude state.As seen from Figure 2, what now locking-valve core and described locking-valve overlapped abuts against, and now actuator port 7 is connected with oil cylinder, locking-valve core is under the pressure of hydraulic oil, abut against with locking-valve cover tightly, without hydraulic oil circulation between actuator port and valve pocket, cylinder piston position is fixed.When valve rod is in meta state, the rodless cavity oil of oil cylinder oppositely produces pressure acts on locking-valve core inner face by the aperture (this aperture is communicated with the inner chamber of actuator port and locking-valve core) on locking-valve core under the effect of load, and form the inner chamber closed, thus ensure that actuator's (oil cylinder) remains on certain altitude.
As the sectional view that Fig. 3 is the A-A in Fig. 1, now valve rod is in lifting working position, and multi-way valve is oil cylinder fuel feeding, and oil cylinder is in propradation.When valve rod is in lifting state, the oil of oil-feed P mouth, by oil duct, is pushed locking-valve core open, is entered oil cylinder rodless cavity by actuator port 7, promotes actuator.
As the sectional view that Fig. 4 is the A-A in Fig. 1, now valve rod is in decline working position, and in-oil cylinder hydraulic oil oil return, oil cylinder is in decline state.When valve rod is in decline state, the inner chamber of twin-lock hydraulic control push rod 11 forms high pressure oil, and hydraulic oil promotes twin-lock hydraulic control push rod 11 and is moved to the left, and backs down locking-valve core, makes oil cylinder rodless cavity oil return fuel tank, makes actuator utilize deadweight to decline.
The outer circumferential face of described steel locking-valve seat 14 is provided with annular groove, is provided with seal ring 18 and back-up ring 22 in described annular groove.
The outer circumferential face of described locking-valve cover 16 is equipped with annular groove, in described annular groove, is provided with seal ring 18 and back-up ring 22.
Described seal ring 18 all adopts rubber seal.
Sealed by seal ring between integral hydraulic lock and the inner chamber of valve body, improve the sealability of multi-way valve.
As Fig. 5, the seal ring 18 on steel locking-valve seat 14 outer circumferential face is arranged at the side near described locking-valve core 15 within annular groove, and back-up ring 22 is arranged at the side away from described locking-valve core 15 within annular groove.Similar, the locking-valve seal ring 18 overlapped on 16 outer circumferential faces is arranged at the side near described locking-valve core 15 within annular groove, and back-up ring 22 is arranged at the side away from described locking-valve core 15 within annular groove.Due to locking-valve core 15, place has high pressure oil to exist, and high pressure oil is present in the space between two seal rings 18 in described Fig. 3.Therefore, there is certain oil pressure for two seal rings in high pressure oil.In multi-way valve working procedure, the oil pressure of high pressure oil constantly converts, and therefore has certain impact force to two seal rings.If do not arrange two back-up rings 22, seal ring is likely extruded generation deformation under the effect of high pressure oil, even likely be extruded annular groove, this just makes the seal failure between steel locking-valve seat 14, locking-valve cover 16 and the work valve block of multi-way valve, thus cause high pressure oil to reveal, reduce functional reliability and the Security of multi-way valve.In multi-way valve of the present invention, block seal ring by back-up ring and bear pressure, seal ring therefore can be avoided to be extruded, forming a combined seal structure, avoiding high pressure oil and reveal.
Steel locking-valve seat and locking-valve cover adopt fine thread to link together, and form the integral hydraulic lock of a plug-in type, the connected sum between the positioning control actuator port of the locking-valve core locked by integral hydraulic and valve pocket disconnects.Because integral hydraulic lock is monolithic construction, lock from the integral hydraulic of dismounting plug-in type multi-way valve by hexagonal hole on the left side of steel locking-valve seat; Steel locking-valve seat 14 left part, owing to have employed interior hexagonal hole, makes the maintenance maintenance of multi-way valve more convenient.The valve seat of integral hydraulic lock adopts steel matter simultaneously, locking-valve core adopts cone valve structure, makes the sealing between locking-valve core and locking-valve cover not be subject to the impact of the impurity in hydraulic oil, has very strong antifouling property, good seal performance, solves the problem that multi-way valve in prior art easily leaks.
Integral multitandem valve of the present invention, owing to adopting, above-mentioned integral hydraulic is locked, the combined sealing structure of seal ring and back-up ring, locking-valve core and described locking-valve adopt the technological improvements such as linear sealing structure between overlapping, experiment proves the zero leakage that can realize multi-way valve, and compared with the nylon seat of prior art, there is good stain resistance.
More than show and describe basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and specification; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (5)
1. be provided with the integral multitandem valve of the resistant to pollution integral hydraulic lock of zero leakage, it is characterized in that, comprise an oil-feed valve block (1), multiple work valve block (2) and an oil return valve block (3); Described multiple work valve block (2) is arranged between described oil-feed valve block (1) and described oil return valve block (3); Described oil-feed valve block (1), multiple work valve block (2) and oil return valve block (3) are monolithic construction; Described oil-feed valve block (1) is provided with oil inlet P (6), described oil return valve block (3) is provided with oil return inlet T (8); Each work valve block (2) of described multiple work valve block (2) is provided with one or two actuator port (7); Be inserted with a valve rod (9) within each work valve block (2) of described multiple work valve block (2), one end of described valve rod (9) stretches out in outside described work valve block (2);
Integral hydraulic lock (10), valve rod (9), twin-lock hydraulic control push rod (11) and rear plug (12) is provided with in shown work valve block (2); Be provided with valve pocket (13) in described work valve block (2), described valve rod (9), twin-lock hydraulic control push rod (11), rear plug (12) and integral hydraulic lock (10) are all located within described valve pocket (13); Wherein, described integral hydraulic lock (10), twin-lock hydraulic control push rod (11) and rear plug (12) set gradually from left to right;
Shown integral hydraulic lock (10) comprises steel locking-valve seat (14), locking-valve core (15), locking-valve cover (16) and Returnning spring (17), the right-hand member of described steel locking-valve seat (14) is provided with stepped shaft inner chamber, the left part of described locking-valve cover (16) is inserted in the stepped shaft inner chamber of described steel locking-valve seat (14), the inside of described locking-valve cover (16) is provided with locking-valve cover valve pocket, described locking-valve cover valve pocket is positioned at the left end of described locking-valve cover (16), described locking-valve core (15) is arranged in described locking-valve cover valve pocket, the left side of the left end of described Returnning spring (17) and the stepped shaft inner chamber of described steel locking-valve seat (14) abuts against, right-hand member and the described locking-valve core (15) of described Returnning spring (17) abut against.
2. the integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage according to claim 1, it is characterized in that, the stepped shaft inner chamber of described steel locking-valve seat (14) is made up of two endoporus, and two endoporus comprise the first endoporus (1401) and the second endoporus (1402); The inner peripheral surface of described first endoporus (14) is provided with internal thread, and described internal thread matches with the outside thread on the left end outer circumferential face of described locking-valve cover (16); The left part of described Returnning spring (17) is inserted among described second endoporus (1402).
3. the integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage according to claim 1, it is characterized in that, the outer circumferential face of described steel locking-valve seat (14) is provided with annular groove, is provided with seal ring (18) and back-up ring (22) in described annular groove.
4. the integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage according to claim 1, it is characterized in that, the outer circumferential face of described locking-valve cover (16) is equipped with annular groove, in described annular groove, is provided with seal ring (18) and back-up ring (22).
5. the integral multitandem valve being provided with the resistant to pollution integral hydraulic lock of zero leakage according to claim 3 or 4, it is characterized in that, described seal ring (18) all adopts rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038703.8A CN104514764A (en) | 2014-08-19 | 2015-01-26 | Integral multi-way valve with zero-leakage pollution-resistant integral hydraulic locks |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014104102979 | 2014-08-19 | ||
| CN201410410297.9A CN104214155A (en) | 2014-08-19 | 2014-08-19 | Integral type multi-way valve provided with integral type hydraulic locks |
| CN201510038703.8A CN104514764A (en) | 2014-08-19 | 2015-01-26 | Integral multi-way valve with zero-leakage pollution-resistant integral hydraulic locks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104514764A true CN104514764A (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410410297.9A Pending CN104214155A (en) | 2014-08-19 | 2014-08-19 | Integral type multi-way valve provided with integral type hydraulic locks |
| CN201520053714.9U Expired - Fee Related CN204403023U (en) | 2014-08-19 | 2015-01-26 | The resistant to pollution integral hydraulic lock of zero leakage |
| CN201510038680.0A Pending CN104595269A (en) | 2014-08-19 | 2015-01-26 | Zero-leakage and anti-fouling integral hydraulic lock |
| CN201510038703.8A Pending CN104514764A (en) | 2014-08-19 | 2015-01-26 | Integral multi-way valve with zero-leakage pollution-resistant integral hydraulic locks |
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| CN201410410297.9A Pending CN104214155A (en) | 2014-08-19 | 2014-08-19 | Integral type multi-way valve provided with integral type hydraulic locks |
| CN201520053714.9U Expired - Fee Related CN204403023U (en) | 2014-08-19 | 2015-01-26 | The resistant to pollution integral hydraulic lock of zero leakage |
| CN201510038680.0A Pending CN104595269A (en) | 2014-08-19 | 2015-01-26 | Zero-leakage and anti-fouling integral hydraulic lock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941950A (en) * | 2020-06-30 | 2022-01-18 | 徐州徐工液压件有限公司 | Method and device for machining plate type multi-way valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214155A (en) * | 2014-08-19 | 2014-12-17 | 合肥长源液压股份有限公司 | Integral type multi-way valve provided with integral type hydraulic locks |
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| CN203978986U (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Be provided with the integral multitandem valve of integral hydraulic lock |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5921165A (en) * | 1996-08-08 | 1999-07-13 | Hitachi Construction Machinery Co., Ltd. | Hydraulic control system |
| CN201539456U (en) * | 2009-10-29 | 2010-08-04 | 宁波市博尔法液压有限公司 | Step-down multi-way valve |
| CN203161693U (en) * | 2012-12-15 | 2013-08-28 | 深圳市神拓机电设备有限公司 | Hydraulic control one-way valve |
| CN103438248A (en) * | 2013-08-30 | 2013-12-11 | 合肥长源液压股份有限公司 | Sheet-type multi-way valve |
| CN104214155A (en) * | 2014-08-19 | 2014-12-17 | 合肥长源液压股份有限公司 | Integral type multi-way valve provided with integral type hydraulic locks |
-
2014
- 2014-08-19 CN CN201410410297.9A patent/CN104214155A/en active Pending
-
2015
- 2015-01-26 CN CN201520053714.9U patent/CN204403023U/en not_active Expired - Fee Related
- 2015-01-26 CN CN201510038680.0A patent/CN104595269A/en active Pending
- 2015-01-26 CN CN201510038703.8A patent/CN104514764A/en active Pending
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| GB2019535A (en) * | 1978-03-10 | 1979-10-31 | B & G Hydraulics Ltd | Fluid Operated Valves |
| JPH02283903A (en) * | 1989-03-25 | 1990-11-21 | O & K Orenstein & Koppel Ag | Multi-way valve |
| CN102191944A (en) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | Inserted medium flow upright post hydraulic control one-way valve |
| CN202072444U (en) * | 2011-05-13 | 2011-12-14 | 合肥长源液压股份有限公司 | Multi-way valve with functions of high pressure load-off, lifting self-lock and manual decline for forklift |
| CN202884029U (en) * | 2012-09-26 | 2013-04-17 | 太仓市明宇密封件有限公司 | Seal ring for shaft |
| CN203239667U (en) * | 2013-04-25 | 2013-10-16 | 宦治平 | Harvester overall multi-reversing valve |
| CN203421223U (en) * | 2013-08-30 | 2014-02-05 | 合肥长源液压股份有限公司 | Multi-way plate valve |
| CN203978986U (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Be provided with the integral multitandem valve of integral hydraulic lock |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941950A (en) * | 2020-06-30 | 2022-01-18 | 徐州徐工液压件有限公司 | Method and device for machining plate type multi-way valve |
| CN113941950B (en) * | 2020-06-30 | 2023-10-03 | 徐州徐工液压件有限公司 | Method and device for processing sheet type multi-way valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104214155A (en) | 2014-12-17 |
| CN104595269A (en) | 2015-05-06 |
| CN204403023U (en) | 2015-06-17 |
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