CN203978988U - Be provided with the integral multitandem valve of integral hydraulic lock and anti-pollution plug-in overflow valve - Google Patents
Be provided with the integral multitandem valve of integral hydraulic lock and anti-pollution plug-in overflow valve Download PDFInfo
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- CN203978988U CN203978988U CN201420470109.7U CN201420470109U CN203978988U CN 203978988 U CN203978988 U CN 203978988U CN 201420470109 U CN201420470109 U CN 201420470109U CN 203978988 U CN203978988 U CN 203978988U
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Abstract
The utility model discloses a kind of integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve, comprise oil-feed valve block, multiple work valve block and oil return valve block; Oil-feed valve block, multiple work valve block and oil return valve block are monolithic construction; On oil-feed valve block, be provided with oil inlet P, on oil return valve block, be provided with oil return inlet T; Each work is provided with on valve block in actuator port and its and is inserted with valve rod.In work valve block, be provided with integral hydraulic lock, valve rod, twin-lock hydraulic control push rod and rear plug; Integral hydraulic lock comprises steel locking-valve seat, locking-valve core, locking-valve cover and Returnning spring.In oil-feed valve block, be provided with plug-in overflow valve.The integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model, have can reduce leakage of oil risk, avoid internal leakage, raising valve functional reliability, simplified processing technology, reduced the advantages such as processing cost.
Description
Technical field
The utility model relates to a kind of multi-way valve, especially a kind of integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve.
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 it and high yield good harvest are linked together.Along with national economy, the particularly development of rural economy and agricultural productive force, peasant is grown to even greater heights to the cry of rice and wheat harvester tool, and the function and significance of harvesting mechanization is just obtaining more and more people's understanding.In harvest machinery industry, hydraulics has obtained application more and more widely, the application percentage of hydraulic transmission is increasing, hydraulic operation has not been simple traditional pure mechanical transmission that replaces, but a series of advanced persons' design principle and structure are introduced, become the indivisible organic component of harvest machinery, make harvest machinery there is good operating characteristics, can meet preferably agricultural technology requirement.Therefore this project market foreground is wide, has good social economic benefit.Harvest machinery is in time point intensive work about one month, and the reliability of machine has determined 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 restricting the development of the performance of complete machine, thus design now more hydraulic element reliably, to main frame particularly harvest machinery have the effect of particular importance.
DLT series integral multi-way valve is widely used on farm machinery, is mainly used for meeting the unidirectional locking of actuator.This multi-way valve is integrated in Pilot operated check valve in working body, compact structure, and operating life is high, has reduced the layout of hydraulic system pipeline simultaneously.
At present, existing farm machinery multi-way valve, adopts split-type structural more.As shown in FIG. 7 and 8, 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, adopt sealing gasket 4 between sheet to seal, sealing gasket between needing multiple, therefore between sheet, the risk of leakage of oil is larger, 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 a clamping bolt 5.The multi-way valve of this split-type structural, need be first by Split assembled, and then machining hole; Because valve body is when urgent, valve main aperture has micro-distortion, causes valve rod in the time of dress examination, to occur catching phenomenon; So need to become after entirety at separable assembled, 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 8.This Split type hydraulic is locked the assembly limited location bar 19 that comprises, steel ball 20, nylon seat 21 etc.Because nylon seat material is softer, easily at surface card impurity, thereby cause occurring poorly sealed phenomenon between steel ball and nylon seat, in generation, let out, thereby affected the functional reliability of multi-way valve.
Model utility content
The utility model is the deficiency existing in above-mentioned prior art for avoiding, and a kind of integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve is provided, to reduce the risk of leakage of oil, the functional reliability of raising valve.
The utility model be technical solution problem by the following technical solutions.
The integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve, its structural feature is to comprise 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; On described oil-feed valve block, be provided with oil inlet P, on described oil return valve block, be provided with oil return inlet T; On each work valve block of described multiple work valve blocks, be provided with one or two actuator port; Within each work valve block of described multiple work valve blocks, be inserted with a valve rod, one end of described valve rod stretches out in outside described work valve block;
Shown in work in valve block and be provided with integral hydraulic lock, valve rod, twin-lock hydraulic control push rod and rear plug; In described work valve block, be provided with valve pocket, within described valve rod, twin-lock hydraulic control push rod, rear plug and integral hydraulic lock are all located at described valve pocket; Wherein, described integral hydraulic lock, twin-lock hydraulic control push rod and rear plug set gradually from left to right;
Shown in integral hydraulic lock comprise 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 threaded 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 stepped shaft inner chamber of the left end of described Returnning spring and described steel locking-valve seat connects, and the right-hand member of described Returnning spring and described locking-valve core connect;
Described oil-feed valve block interpolation enters to have an anti-pollution plug-in overflow valve; Described plug-in overflow valve comprises safe valve pocket, the first seal ring, safe spool, the second seal ring, Returnning spring, Cock screw; Described safe valve pocket inside is provided with valve pocket, and described safe spool is arranged in the valve pocket of described safe valve pocket; Within described Cock screw screws in the right-end openings of described safe valve pocket threadably; Described Returnning spring left end and described safe spool right-hand member connect, and the left part of described Cock screw is provided with opening, the right-hand member of described Returnning spring with insert in the inner chamber of opening of described Cock screw and be close to and close with the inner chamber bottom end of opening; Described safety valve is arranged with hyperbaric chamber and low-pressure cavity, between described safe spool and described safe valve pocket, adopts linear sealing.
The structural feature of the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model is also:
The outer circumferential face of described steel locking-valve seat is provided with annular groove, in described annular groove, is provided with seal ring.
On the outer circumferential face of described locking-valve cover, be equipped with annular groove, in described annular groove, be provided with seal ring.
Described seal ring all adopts rubber seal.
Compared with the prior art, the utility model beneficial effect is embodied in:
The integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model, has following technological merit.
(1) oil-feed valve block, work valve block and oil return valve block are set to monolithic construction, and global formation has reduced the risk of leakage of oil between sheet, has improved the functional reliability of multi-way valve.
(2) without punching, save clamping bolt on valve block, simplified processing technology, shortened the manufacture cycle.
(3) owing to adopting integral hydraulic lock to substitute Pilot operated check valve, the valve seat of integral hydraulic lock adopts steel matter, locking-valve core adopts cone valve structure, and for making locking-valve, linear sealing can not affect because of the impurity in hydraulic oil the seal of locking-valve, thereby make multi-way valve there is good stain resistance, avoided multi-way valve to occur internal leakage phenomenon.
(4) adopt anti-pollution plug-in overflow valve, relief valve plays level pressure overflow effect, voltage stabilizing, system unloaded and safety protection effect, has improved the safe and reliable property of multi-way valve.
The integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model, have can reduce leakage of oil risk, avoid internal leakage, raising valve functional reliability, simplified processing technology, reduced the advantages such as processing cost.
Brief description of the drawings
Fig. 1 is the plan view of the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model.
Fig. 2 is the sectional view of the A-A of Fig. 1.
Fig. 3 is the sectional view of the integral hydraulic lock of the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model.
Fig. 4 is the plan view of the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model.
Fig. 5 is the sectional view of the B-B of Fig. 4.
Fig. 6 is the sectional view of the anti-pollution plug-in overflow valve of integral multitandem valve of the present utility model.
Fig. 7 is the structural drawing of the Split multi-way valve of prior art.
Fig. 8 is the sectional view of the C-C of Fig. 7.
Label in accompanying drawing 1～accompanying drawing 8: 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, 12 rear plugs, 13 valve pockets, 14 steel locking-valve seats, 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 plug-in overflow valves, 23 safe valve pockets, 24 first seal rings, 25 safe spools, 26 second seal rings, 27 pressure adjusting springs, 28 Cock screws, 29 look nuts, 30 combination mat, 31 hyperbaric chambers, 32 low-pressure cavity, 33 cap nuts.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1-6, the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve of the present utility model, 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; On described oil-feed valve block 1, be provided with oil inlet P 6, on described oil return valve block 3, be provided with oil return inlet T 8; On each work valve block 2 of described multiple work valve blocks 2, be provided with one or two actuator port 7; Within each work valve block 2 of described multiple work valve blocks 2, be inserted with a valve rod 9, one end of described valve rod 9 stretches out in outside described work valve block 2;
Shown in work and be provided with integral hydraulic lock 10, valve rod 9, twin-lock hydraulic control push rod 11 and rear plug 12 in valve block 2; In described work valve block 2, be provided with valve pocket 13, within described valve rod 9, twin-lock hydraulic control push rod 11, rear plug 12 and integral hydraulic lock 10 are all located at 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 in integral hydraulic lock 10 comprise 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 threaded 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 stepped shaft inner chamber of the left end of described Returnning spring 17 and described steel locking-valve seat 14 connects, and the right-hand member of described Returnning spring 17 and described locking-valve core 15 connect;
In described oil-feed valve block 1, be inserted with an anti-pollution plug-in overflow valve 22; Described plug-in overflow valve 22 comprises safe valve pocket 23, the first seal ring 24, safe spool 25, the second seal ring 26, Returnning spring 27, Cock screw 28; Described safe valve pocket 23 inside are provided with valve pocket, and described safe spool 25 is arranged in the valve pocket of described safe valve pocket 23; Within described Cock screw 28 screws in the right-end openings of described safe valve pocket 23 threadably; Described Returnning spring 27 left ends and described safe spool 25 right-hand members connect, the left part of described Cock screw 28 is provided with opening, the right-hand member of described Returnning spring 27 with insert in the inner chamber of opening of described Cock screw 28 and be close to and close with the inner chamber bottom end of opening; Described safe valve pocket 23 is provided with hyperbaric chamber 31 and low-pressure cavity 32, between described safe spool 25 and described safe valve pocket 23, adopts linear sealing.
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 been made an entirety.Do not need to combine one by one, do not need bolton yet, between valve block also without seal ring between sheet is set in addition.Compare with existing Split multi-way valve, there is the following aspects: (1) has saved seal ring between sheet, has saved cost, avoided sealing the problem that does not tightly cause leakage of oil between sheet simultaneously, improved the functional reliability of multi-way valve; (2) without punching, save clamping bolt on valve block, simplified processing technology, shortened the manufacture cycle.
Integral multitandem valve of the present utility model, is integrated type product, Jiang Wu road valve global formation, the risk of leakage of oil between minimizing sheet.In technique, reduce overall fraising technique simultaneously, greatly shortened the manufacture cycle.
The left end of described locking-valve core is provided with blind hole, within described blind hole is inserted from the left end of described locking-valve core in the right part of described Returnning spring and with the right side of described blind hole, connects.The outer circumferential face of the right part of described locking-valve core is taper.Because locking-valve core is cylindrical surface with the face that described locking-valve cover matches, locking-valve core can be moved neatly in locking-valve cover, the flexibility that has improved multi-way valve.
Steel locking-valve seat, locking-valve core, locking-valve cover and the Returnning spring of integral hydraulic lock are the locking-valves of monolithic construction, between integral hydraulic lock actuator port and multichannel valve pocket, owing to adopting integral hydraulic lock to substitute Split type hydraulic valve, the valve seat of integral hydraulic lock adopts steel matter, locking-valve core adopts cone valve structure, and for making locking-valve, linear sealing can not affect because of the impurity in hydraulic oil the seal of locking-valve, thereby make multi-way valve there is good stain resistance, avoided multi-way valve to occur internal leakage phenomenon.
Described the first seal ring 24, the second seal ring 26 are all sheathed on the outer circumferential face of described safe valve pocket, make the sealing between safe valve pocket and oil-feed valve block tightr.On the outer circumferential face of described Cock screw, be provided with look nut 29, bonded washer 30 and cap nut 33.The mode fixed cover that described cap nut 33 is threaded connection is located on the right part of described Cock screw.Described look nut 29, bonded washer 30 are sheathed on the outer circumferential face of described Cock screw.Described bonded washer is between described look nut 29 and cap nut 33.The valve pocket in safe valve pocket is divided into left and right two-part by safe spool, and safe spool left side is hyperbaric chamber 31, and safe spool right side is low-pressure cavity 32.In the time that the pressure in hyperbaric chamber is excessive, spool can be pushed away to the right, spool is opened, and hyperbaric chamber and low-pressure cavity are connected, thereby are hyperbaric chamber pressure release.
In described plug-in overflow valve, the contact position place of described safe spool and safe valve pocket, described safe spool and described safety valve put and are all set to inclined-plane, between the two by the sealing that contacts of two inclined-planes, adopt the mode of this linear sealing, so good seal performance.Relief valve plays level pressure overflow effect, voltage stabilizing, system unloaded and safety protection effect, has improved the safe and reliable property of multi-way valve.
The outer circumferential face of described steel locking-valve seat 14 is provided with annular groove, is provided with seal ring 18 in described annular groove.
On the outer circumferential face of described locking-valve cover 16, be equipped with annular groove, in described annular groove, be provided with seal ring 18.
Described seal ring 18 all adopts rubber seal.
Between plug-in type locking-valve and the inner chamber of valve body, seal by seal ring, improved the sealability of multi-way valve.
Steel locking-valve seat and locking-valve adopt fine thread to link together, and form an all-in-one-piece plug-in type locking-valve, are disconnected by the connected sum between positioning control actuator port and the valve pocket of the spool of plug-in type locking-valve.Because plug-in type locking-valve is monolithic construction, can, by the interior hexagonal hole dismounting plug-in type locking-valve from multi-way valve on the left side of steel locking-valve seat, make the maintenance maintenance of chip multi-way valve more convenient.The valve seat of plug-in type locking-valve adopts steel matter simultaneously, locking-valve core adopts cone valve structure, makes 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, has solved the problem that in prior art, multi-way valve easily leaks.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve, is characterized in that, comprises an oil-feed valve block (1), multiple work valve block (2) and an oil return valve block (3); Described multiple work valve blocks (2) are 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; On described oil-feed valve block (1), be provided with oil inlet P (6), on described oil return valve block (3), be provided with oil return inlet T (8); On each work valve block (2) of described multiple work valve blocks (2), be provided with one or two actuator port (7); Within each work valve block (2) of described multiple work valve blocks (2), be inserted with a valve rod (9), one end of described valve rod (9) stretches out in outside described work valve block (2);
Shown in work and be provided with integral hydraulic lock (10), valve rod (9), twin-lock hydraulic control push rod (11) and rear plug (12) in valve block (2); In described work valve block (2), be provided with valve pocket (13), within described valve rod (9), twin-lock hydraulic control push rod (11), rear plug (12) and integral hydraulic lock (10) are all located at 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 in integral hydraulic lock (10) comprise 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 threaded 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 stepped shaft inner chamber of the left end of described Returnning spring (17) and described steel locking-valve seat (14) connects, the right-hand member of described Returnning spring (17) and described locking-valve core (15) connect,
In described oil-feed valve block (1), be inserted with an anti-pollution plug-in overflow valve (22); Described plug-in overflow valve (22) comprises safe valve pocket (23), the first seal ring (24), safe spool (25), the second seal ring (26), Returnning spring (27), Cock screw (28); Described safe valve pocket (23) inside is provided with valve pocket, and described safe spool (25) is arranged in the valve pocket of described safe valve pocket (23); Within described Cock screw (28) screws in the right-end openings of described safe valve pocket (23) threadably; Described Returnning spring (27) left end and described safe spool (25) right-hand member connect, the left part of described Cock screw (28) is provided with opening, the right-hand member of described Returnning spring (27) with insert in the inner chamber of opening of described Cock screw (28) and be close to and close with the inner chamber bottom end of opening; Described safe valve pocket (23) is provided with hyperbaric chamber (31) and low-pressure cavity (32), between described safe spool (25) and described safe valve pocket (23), adopts linear sealing.
2. the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve 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) in described annular groove.
3. the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve according to claim 1, it is characterized in that, on the outer circumferential face of described locking-valve cover (16), be equipped with annular groove, in described annular groove, be provided with seal ring (18).
4. the integral multitandem valve that is provided with integral hydraulic lock and anti-pollution plug-in overflow valve according to claim 1, is characterized in that, described seal ring (18) all adopts rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420470109.7U CN203978988U (en) | 2014-08-19 | 2014-08-19 | Be provided with the integral multitandem valve of integral hydraulic lock and anti-pollution plug-in overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420470109.7U CN203978988U (en) | 2014-08-19 | 2014-08-19 | Be provided with the integral multitandem valve of integral hydraulic lock and anti-pollution plug-in overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978988U true CN203978988U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420470109.7U Expired - Fee Related CN203978988U (en) | 2014-08-19 | 2014-08-19 | Be provided with the integral multitandem valve of integral hydraulic lock and anti-pollution plug-in overflow valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203978988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196797A (en) * | 2014-08-19 | 2014-12-10 | 合肥长源液压股份有限公司 | Integral multiway valve with integral hydraulic locks and fouling resistant plug-in mounting overflow valve |
-
2014
- 2014-08-19 CN CN201420470109.7U patent/CN203978988U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196797A (en) * | 2014-08-19 | 2014-12-10 | 合肥长源液压股份有限公司 | Integral multiway valve with integral hydraulic locks and fouling resistant plug-in mounting overflow valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20200819 |