CN107620810A - A kind of mechanical No leakage banked direction control valves - Google Patents
A kind of mechanical No leakage banked direction control valves Download PDFInfo
- Publication number
- CN107620810A CN107620810A CN201711034467.8A CN201711034467A CN107620810A CN 107620810 A CN107620810 A CN 107620810A CN 201711034467 A CN201711034467 A CN 201711034467A CN 107620810 A CN107620810 A CN 107620810A
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- Prior art keywords
- valve
- oil
- working hole
- valve element
- leakage
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 239000010426 asphalt Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 29
- 230000006872 improvement Effects 0.000 description 8
- 239000002689 soil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000255789 Bombyx mori Species 0.000 description 1
- 241000276694 Carangidae Species 0.000 description 1
- 241000719178 Carangoides ruber Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 235000008708 Morus alba Nutrition 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009341 apiculture Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
A kind of mechanical No leakage banked direction control valves.Solve on existing farm machinery that pressure oil can not preserve, the problem of oil leak, pressure instability be present.It includes valve body and valve rod, described valve body is provided with oil inlet, oil-out, first working hole, second working hole and cavity, the check valve with hydraulic pressure lock function is provided with described valve body, described check valve is located between cavity and the second working hole, described valve rod, which has, causes inlet pressure oil through cavity, check valve is connected with the second working hole while so that the first position that the first working hole is connected with oil-out, so that the second place that oil inlet is connected with oil-out and the pressure oil of the second working hole passes through check valve locking, open the 3rd position that check valve make it that the second working hole is connected with oil-out.The advantages that present invention also has simple in construction, easy to assembly, reliable in action, and service life is long.
Description
Technical field
The present invention relates to a kind of agricultural machinery, and in particular to a kind of mechanical No leakage banked direction control valves.
Background technology
Agricultural machinery refers to during crop-planting industry and Animal husbandry production, Yi Jinong, livestock products preliminary working and processing
During used various machineries.Agricultural machinery includes farm power machinery, farmland construction machinery, soil cultivating machine, kind
Plant and fertilizer machinery, plant protection mechanism, farmland discharging-irrigating machinery, crop harvesting machine, agricultural product processing machinery, animal husbandry machinery
With farm transportation machinery etc..The agricultural machinery of broad sense also includes forestry machinery, fishery machinery and silkworm and mulberry, bee-keeping, edible fungi training
The agricultural sideline occupations such as plant machinery.Agricultural machinery belongs to relative concept, and it is all mechanical for agricultural, animal husbandry, forestry and fishery to refer to
General name, agricultural machinery belong to the category of agricultural machinery and implement..The higher seal request of many agricultural machinery needs, such as tractor
Lift cylinder is, it is necessary to very high pressure maintaining performance.If pressure maintaining performance is bad, when plowing, depth difference of plowing will be made, influenceed
Plow effect., just can not converting field if plough tool can not be held for a long time when shifting place.And according in work
The concrete condition of geology is, it is necessary to which existing tractor has type of suppressing and non-suppresses two kinds of working conditions of type：Because nonirrigated farmland soil property
Harder, the weight of farm implements itself is insufficient to allow inside plough press-in soil, does not have this law to realize deep ploughing, it is therefore desirable to using suppressing
Type.Because water soil property it is softer, the weight of farm implements itself can just make plough be pressed into soil, realize deep ploughing, it is necessary to be suppressed with non-
Type, and can not use suppress type.The needs of above two operating mode can be met by so allowing for existing banked direction control valves, and existing general
Lock can only meet to suppress type operating mode, can not meet for non-type of suppressing.
The content of the invention
It can not be preserved for pressure oil on existing farm machinery in solution background technology, the problem of oil leak, pressure instability be present,
The present invention provides a kind of mechanical No leakage banked direction control valves.
The technical scheme is that：A kind of mechanical No leakage banked direction control valves, including valve body and valve rod, on described valve body
Being provided with provided with oil inlet, oil-out, the first working hole, the second working hole and cavity, in described valve body has hydraulic pressure lock function
Check valve, described check valve be located between cavity and the second working hole, described valve rod have cause inlet pressure oil
Be connected through cavity, check valve with the second working hole while so that the first working hole be connected with oil-out first position, make
Oil inlet is connected and the pressure oil of the second working hole passes through the second place of check valve locking, opening check valve with oil-out
So that the 3rd position that the second working hole is connected with oil-out.
As a modification of the present invention, described check valve includes pedestal, valve pocket, the first valve element and push rod, described
Pedestal is fixed on the inwall of valve body, and in valve pocket, the first described valve element has by oil inlet pressure the first described valve core housing
Pressure in the working hole of locking second that power oil opens the first state that cavity is connected with the second working hole and valve pocket fits
Oil the second state and opened by push rod top so that the third state that the second working hole is connected with oil-out.
As a further improvement on the present invention, spool bore is provided with the first described valve element, in the first described spool bore
Provided with the second valve element, the second described valve element there is the first state that is fitted with the first valve element inwall and opened by push rod top so that
The second state that cavity is connected with spool bore, first position, the valve element of pushing tow first cause valve when described push rod has installation
The second place and the valve element of pushing tow first that core bore is connected with cavity cause the first valve element to be in the 3rd position of the third state.
As a further improvement on the present invention, be provided with elastic component in described spool bore, one end of described elastic component and
Pedestal offsets, and the other end offsets with the second valve element, and described elastic component has the motion that the second valve element of driving tends to first state
Trend.
As a further improvement on the present invention, lead between the outer wall of the inwall of the valve pocket and the first valve element provided with oil circuit
Road, described asphalt channel are connected with cavity, and the first described valve element is provided with the connection of connection asphalt channel and spool bore
Hole.
As a further improvement on the present invention, described valve rod is provided with concave part, oblique portion and supporting part, the push rod
One end when push rod is in first position, the second place, three positions the concave part with valve rod, oblique portion and supporting part respectively
Offset.
As a further improvement on the present invention, positioning sleeve is provided between described pedestal and valve pocket, is set on described pedestal
There are the connecting portion for being fixedly connected with valve interior wall and the medium channel passed through for medium, described positioning sleeve passes through medium
Passage is connected with the second working hole.
As a further improvement on the present invention, the first described valve element is engaged to form conical surface seal pair with valve pocket.
As a further improvement on the present invention, described valve interior wall is to stretching out guide part, described pushing rod sleeve at cavity
Slide in guide part and with guide part and coordinate, described push rod is provided with annular balancing slit at the guide part of valve body.
As a further improvement on the present invention, described valve body is provided with choke valve, the import of the choke valve and first
Actuator port is connected, and the outlet of the choke valve is connected with oil-out, and described choke valve includes throttling valve core and is used for
Adjust the adjusting rod of throttling valve core openings of sizes.
The invention has the advantages that the oil-out in the second working hole sets check valve so that valve rod is in the second place
When can realize hydraulic oil counteresteer, will not leak so that agricultural machinery in transfer and work can pressurize so that production
Product pressure is constant, and effect is good.The advantages that present invention also has simple in construction, easy to assembly, reliable in action, and service life is long.
Brief description of the drawings
Accompanying drawing 1 is in the structural representation during second place for valve rod 2 in the embodiment of the present invention.
Accompanying drawing 2 is the hydraulic schematic diagram of the embodiment of the present invention.
Accompanying drawing 3 is the structural representation at check valve 3 in accompanying drawing 1.
Accompanying drawing 4 is in structural representation during first position for valve rod 2 in the embodiment of the present invention.
Accompanying drawing 5 is the structural representation that push rod 34 is in the second place in the embodiment of the present invention.
Accompanying drawing 6 is that valve rod 2 is when being in three positions in the embodiment of the present invention and push rod 34 is in the structure of the 3rd position and shown
It is intended to.
Accompanying drawing 7 is the structural representation of pedestal 31 in accompanying drawing 3.
Accompanying drawing 8 is the structural representation of the first valve element 33 in accompanying drawing 3.
In figure, 1, valve body；P, oil inlet；T, oil-out；A, the first working hole；B, the second working hole；11st, cavity；12nd, lead
To portion；2nd, valve rod；21st, concave part；22nd, oblique portion；23rd, supporting part；3rd, check valve；31st, pedestal；311st, connecting portion；312nd, it is situated between
Matter passage；32nd, valve pocket；321st, asphalt channel；33rd, the first valve element；331st, spool bore；332nd, intercommunicating pore；34th, push rod；341st, ring
Shape balancing slit；35th, the second valve element；36th, elastic component；37th, positioning sleeve；4th, choke valve；41st, throttling valve core；42nd, adjusting rod.
Embodiment
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings：
As shown in Fig. 1 combinations Fig. 2-8, a kind of mechanical No leakage banked direction control valves, including valve body 1 and valve rod 2, on described valve body 1
Being provided with provided with oil inlet P, oil-out T, the first working hole A, the second working hole B and cavity 11, in described valve body 1 has hydraulic pressure
The check valve 3 of lock function, described check valve 3 are located between the working hole B of cavity 11 and second, and described valve rod 2, which has, to be caused
Oil inlet P pressure oil is connected through cavity 11, check valve 3 with the second working hole B while so that the first working hole A and oil-out T
The first position that is connected, such that oil inlet P connects with oil-out T-phase and the second working hole B pressure oil is locked by check valve 3
The second place only, opening check valve 3 cause the 3rd position that the second working hole B connects with oil-out T-phase.The present invention is second
The oil-out of working hole sets check valve so that valve rod can realize hydraulic oil counteresteer at the second place, will not leak, make
Agricultural machinery in transfer and work can pressurize so that product pressure is constant, effect is good.Structure of the present invention need not
Increase valve body height, directly increase a check valve in main oil gallery, save space, with cone seal form, ensure that higher close
Sealing property.The advantages that present invention also has simple in construction, easy to assembly, reliable in action, and service life is long.Referring to accompanying drawing 1, valve rod
When in the second place being middle position, P to A, B are shut by valve rod, P middle position oil return unloadings.Referring to Fig. 4, valve rod is moved to the left, P
Mouth middle position is gradually shut, and is connected by middle position valve rod and then by No leakage check valve 3 with B mouths, and A mouths then connect with T mouths, B
Mouth is load port, and A mouths are connected with the small chamber of product.Referring to Fig. 5, when valve rod moves right small distance, valve rod promotes guide to push away
Bar jacks up the second valve element, and the second valve element is steel ball.Now, cavity is connected with B mouths, and pressure is identical, and cavity is shut with T mouths, now
So that cavity is identical with B mouth pressure, so that with regard to the balance pressure of cavity and B mouths can be established during push rod minor motion, so as to
So that the first valve element is opened conveniently, resistance is small, is easy to open the first valve element using mechanical.Referring to Fig. 6, when valve rod continues to the right
When mobile, valve rod continues to press on guide's push rod, jacks up valve pocket.Now, B mouths lead to T, P and A mouth and come round.In the present invention, accompanying drawing 4,
5th, the arrow in 6 represents the flow direction of hydraulic oil.
Described check valve 3 includes pedestal 31, valve pocket 32, the first valve element 33 and push rod 34, and described pedestal 31 is fixed on
The inwall of valve body 1, the first described valve element 33 are sheathed in valve pocket 32, and the first described valve element 33 has by oil inlet P pressure
Oil opens the first state that cavity 11 is connected with the second working hole B and valve pocket 32 fits in the second working hole of locking B
Second state of pressure oil and push up to open by push rod 34 and cause the third state that is connected with oil-out T-phase of the second working hole B.It is such
Structure allows valve element to be opened when B mouths work by pressure oil overhold, can also mechanically be pushed up out by push rod in oil return,
Ensure also to cause product to open conveniently while product hermeticity energy, reliable in action.
Spool bore 331 is provided with the first described valve element 33, the second valve element 35, institute are provided with the described hole of the first valve element 33
The second valve element 35 stated there is the first state that is fitted with the inwall of the first valve element 33 and opened by the top of push rod 34 cause cavity 11 and
The second state that spool bore 331 is connected, first position, the first valve element of pushing tow 33 cause valve when described push rod 34 has installation
The second place that core bore 331 is connected with cavity 11 and the first valve element of pushing tow 33 cause the first valve element 33 to be in the of the third state
Three positions.The setting of second valve element and the position of push rod, which are set, enables the push rod in oil return preferentially to push up out the second valve element so that B
Mouthful quickly establish oil pressure with cavity, avoid the first valve element both ends High Pressure Difference from influenceing the motion of push rod, at the same avoid push rod fracture or
Damage, influences product service life.
Elastic component 36 is provided with described spool bore 331, one end and the pedestal 31 of described elastic component 36 offset, the other end
Offseted with the second valve element 35, described elastic component 36 has the movement tendency that the second valve element 35 of driving tends to first state.Elasticity
The setting of part make it that the second seal spool is reliable, and simple in construction, easy for installation.
Asphalt channel 321, described asphalt channel are provided between the outer wall of the inwall of the valve pocket 32 and the first valve element 33
321 are connected with cavity 11, and the first described valve element 33 is provided with connection asphalt channel 321 and the intercommunicating pore of spool bore 331
332.Such structure enables B mouths during oil return quickly to establish pressure with cavity, is easy to putter action.
Described valve rod 2 is provided with concave part 21, oblique portion 22 and supporting part 23, and one end of the push rod 34 is in push rod 34
The concave part 21 with valve rod 2, oblique portion 22 and supporting part 23 offset respectively during in first position, the second place, three positions.
Such structure enables the fast and reliable promotion putter action of valve rod, so that push rod can have three positions, it is reliable to drive
First valve element, the action of the second valve element.Certainly in actual production process, the first working hole and the second working hole can be symmetrical arranged
In on valve body.
Be provided with positioning sleeve 37 between described pedestal 31 and valve pocket 32, described pedestal 31 be provided be used for in valve body 1
Connecting portion 311 that wall is fixedly connected and the medium channel 312 passed through for medium, described positioning sleeve 37 pass through medium channel
312 are connected with the second working hole B.It is reliable that the setting of positioning sleeve causes valve pocket to fix, while is easy to flow of media, is easy to back
Oil.
The first described valve element 33 is engaged to form conical surface seal pair with valve pocket 32.Conical surface seal is secondary make it that product sealing can
Lean on, it is reliable in the hydraulic oil locking of B mouths, it is easy to check valve reversely to seal.
The described inwall of valve body 1 is sheathed in guide part 12 simultaneously to stretching guide part 12, described push rod 34 at cavity 11
Slide and coordinate with guide part 12, described push rod 34 is provided with annular balancing slit 341 at the guide part 12 of valve body 1.Annular is pressed
The setting of groove so that the effect in pushrod movement by oil pressure can be with easy motion, so as to reliably push the second valve element open
With the first valve element.
Described valve body 1 is provided with choke valve 4, and the import of the choke valve 4 is connected with the first working hole A, the section
The outlet of stream valve 4 connects with oil-out T-phase, and described choke valve 4 includes throttling valve core 41 and opened for adjusting throttling valve core 41
The adjusting rod 42 of mouth size.When the setting of choke valve to need, pressure oil can directly return T mouths through choke valve.In choke valve
During closing, the common effect for suppressing type banked direction control valves can be realized.When, soil property is softer because of water, and the weight of farm implements itself can
So that plough press-in soil, when realizing deep ploughing, can open choke valve, non-type function is suppressed so as to realize so that product action is flat
It is steady reliable.
Every technical staff's notice：Although the present invention describes according to above-mentioned embodiment, of the invention
Invention thought be not limited to that invention, any repacking with inventive concept, will all include this patent protection of the patent right
In the range of.
Claims (10)
1. a kind of mechanical No leakage banked direction control valves, including valve body（1）And valve rod（2）, it is characterised in that:Described valve body（1）On
Provided with oil inlet（P）, oil-out（T）, the first working hole（A）, the second working hole（B）And cavity（11）, described valve body（1）It is interior
Provided with the check valve with hydraulic pressure lock function（3）, described check valve（3）Located at cavity（11）With the second working hole（B）Between,
Described valve rod（2）With causing oil inlet（P）Pressure oil is through cavity（11）, check valve（3）With the second working hole（B）It is connected
Cause the first working hole simultaneously（A）With oil-out（T）The first position that is connected, cause oil inlet（P）With oil-out（T）It is connected
Logical and the second working hole（B）Pressure oil pass through check valve（3）The second place of locking, open check valve（3）So that the second work
Make mouth（B）With oil-out（T）The 3rd position being connected.
A kind of 2. mechanical No leakage banked direction control valves according to claim 1, it is characterised in that described check valve（3）Including
Pedestal（31）, valve pocket（32）, the first valve element（33）And push rod（34）, described pedestal（31）It is fixed on valve body（1）Inwall, institute
The first valve element stated（33）It is sheathed on valve pocket（32）The first interior, described valve element（33）With by oil inlet（P）Pressure oil is opened
So that cavity（11）With the second working hole（B）The first state and valve pocket being connected（32）Fit the working hole of locking second（B）
Second state of interior pressure oil and by push rod（34）Open so that the second working hole on top（B）With oil-out（T）The 3rd shape being connected
State.
A kind of 3. mechanical No leakage banked direction control valves according to claim 2, it is characterised in that the first described valve element（33）
It is interior to be provided with spool bore（331）, described the first valve element（33）The second valve element is provided with hole（35）, described the second valve element（35）Tool
Have and the first valve element（33）First state that inwall fits and by push rod（34）Open so that cavity on top（11）With spool bore（331）
The second state being connected, described push rod（34）First position, the valve element of pushing tow first during with installation（33）So that spool bore
（331）With cavity（11）The second place being connected and the valve element of pushing tow first（33）So that the first valve element（33）In the third state
The 3rd position.
A kind of 4. mechanical No leakage banked direction control valves according to claim 3, it is characterised in that described spool bore（331）It is interior
Provided with elastic component（36）, described elastic component（36）One end and pedestal（31）Offset, the other end and the second valve element（35）Offset,
Described elastic component（36）With driving the second valve element（35）Tend to the movement tendency of first state.
A kind of 5. mechanical No leakage banked direction control valves according to claim 3, it is characterised in that the valve pocket（32）Inwall
With the first valve element（33）Outer wall between be provided with asphalt channel（321）, described asphalt channel（321）With cavity（11）It is connected
The first logical, described valve element（33）It is provided with connection asphalt channel（321）With spool bore（331）Intercommunicating pore（332）.
A kind of 6. mechanical No leakage banked direction control valves according to claim 3, it is characterised in that described valve rod（2）It is provided with
Concave part（21）, oblique portion（22）And supporting part（23）, the push rod（34）One end in push rod（34）In first position,
When two positions, three positions respectively with valve rod（2）Concave part（21）, oblique portion（22）And supporting part（23）Offset.
A kind of 7. mechanical No leakage banked direction control valves according to claim 2, it is characterised in that described pedestal（31）With valve
Set（32）Between be provided with positioning sleeve（37）, described pedestal（31）It is provided with and is used for and valve body（1）The connection that inwall is fixedly connected
Portion（311）With the medium channel passed through for medium（312）, described positioning sleeve（37）Pass through medium channel（312）With second
Working hole（B）It is connected.
A kind of 8. mechanical No leakage banked direction control valves according to claim 2, it is characterised in that the first described valve element（33）
With valve pocket（32）It is engaged to form conical surface seal pair.
A kind of 9. mechanical No leakage banked direction control valves according to claim 2, it is characterised in that described valve body（1）Inwall to
Cavity（11）Guide part is stretched out at place（12）, described push rod（34）It is sheathed on guide part（12）Interior and and guide part（12）Sliding is matched somebody with somebody
Close, described push rod（34）In valve body（1）Guide part（12）Place is provided with annular balancing slit（341）.
A kind of 10. mechanical No leakage banked direction control valves according to claim 1, it is characterised in that described valve body（1）On set
There is choke valve（4）, the choke valve（4）Import and the first working hole（A）It is connected, the choke valve（4）Outlet with going out
Hydraulic fluid port（T）It is connected, described choke valve（4）Including throttling valve core（41）With for adjusting throttling valve core（41）Openings of sizes
Adjusting rod（42）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034467.8A CN107620810B (en) | 2017-10-30 | 2017-10-30 | Mechanical leakage-free multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034467.8A CN107620810B (en) | 2017-10-30 | 2017-10-30 | Mechanical leakage-free multi-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107620810A true CN107620810A (en) | 2018-01-23 |
| CN107620810B CN107620810B (en) | 2024-04-23 |
Family
ID=61092971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711034467.8A Active CN107620810B (en) | 2017-10-30 | 2017-10-30 | Mechanical leakage-free multi-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107620810B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533793A (en) * | 2018-06-25 | 2018-09-14 | 圣邦集团有限公司 | A kind of clutch power-assisted valve |
| WO2023077630A1 (en) * | 2021-11-02 | 2023-05-11 | 浙江海宏液压科技股份有限公司 | Reversing valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2835676Y (en) * | 2005-10-10 | 2006-11-08 | 合肥长源液压件有限责任公司 | Distributor with little leakage when valve rod in middle |
| CN203926202U (en) * | 2014-03-27 | 2014-11-05 | 湖州生力液压有限公司 | Select operating valve |
| CN203978989U (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | The hydraulic multitandem valve that farm machinery is used |
| CN204004618U (en) * | 2014-06-27 | 2014-12-10 | 周明嵩 | Flow deviding type balancing valve structure |
| CN204553393U (en) * | 2015-04-23 | 2015-08-12 | 圣邦集团有限公司 | Selection type bidirectional relief valve |
| CN107218413A (en) * | 2017-07-05 | 2017-09-29 | 圣邦集团有限公司 | A kind of banked direction control valves with hydraulic pressure lock function |
| CN207364331U (en) * | 2017-10-30 | 2018-05-15 | 圣邦集团有限公司 | A kind of mechanical No leakage multi-way valve |
-
2017
- 2017-10-30 CN CN201711034467.8A patent/CN107620810B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2835676Y (en) * | 2005-10-10 | 2006-11-08 | 合肥长源液压件有限责任公司 | Distributor with little leakage when valve rod in middle |
| CN203926202U (en) * | 2014-03-27 | 2014-11-05 | 湖州生力液压有限公司 | Select operating valve |
| CN204004618U (en) * | 2014-06-27 | 2014-12-10 | 周明嵩 | Flow deviding type balancing valve structure |
| CN203978989U (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | The hydraulic multitandem valve that farm machinery is used |
| CN204553393U (en) * | 2015-04-23 | 2015-08-12 | 圣邦集团有限公司 | Selection type bidirectional relief valve |
| CN107218413A (en) * | 2017-07-05 | 2017-09-29 | 圣邦集团有限公司 | A kind of banked direction control valves with hydraulic pressure lock function |
| CN207364331U (en) * | 2017-10-30 | 2018-05-15 | 圣邦集团有限公司 | A kind of mechanical No leakage multi-way valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533793A (en) * | 2018-06-25 | 2018-09-14 | 圣邦集团有限公司 | A kind of clutch power-assisted valve |
| CN108533793B (en) * | 2018-06-25 | 2024-04-19 | 圣邦集团有限公司 | Clutch booster valve |
| WO2023077630A1 (en) * | 2021-11-02 | 2023-05-11 | 浙江海宏液压科技股份有限公司 | Reversing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107620810B (en) | 2024-04-23 |
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