CN109667781A - A kind of fan back-flushing valve - Google Patents
A kind of fan back-flushing valve Download PDFInfo
- Publication number
- CN109667781A CN109667781A CN201910089681.6A CN201910089681A CN109667781A CN 109667781 A CN109667781 A CN 109667781A CN 201910089681 A CN201910089681 A CN 201910089681A CN 109667781 A CN109667781 A CN 109667781A
- Authority
- CN
- China
- Prior art keywords
- valve
- actuator port
- mouthful
- pressure compensator
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 72
- 230000006872 improvement Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
-
- 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
-
- 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
- F15B13/026—Pressure compensating valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of fan back-flushing valve.The problem of solving and be easy absorption dust on existing agricultural machinery, influencing product cooling performance.It includes reversal valve, pressure compensator, main oil inlet, first oil return opening, first actuator port and the second actuator port, second actuator port is connected with fan blade control mechanism, the reversal valve has the first position for disconnecting winner's oil inlet and the second actuator port mutually and the second position for making winner's oil inlet be connected with the second actuator port, the pressure compensator includes first, second mouthful, third mouth and the 4th mouthful, pressure oil at described the 4th mouthful is connected with the first control chamber to be opened pressure compensator the 4th mouthful of first hydraulic fluid port that is connected by third mouth with the second actuator port and makes is made to receive pressure oil at main oil inlet and be connected by second mouthful with the first actuator port.The advantages that present invention also has structure simple, easy to assembly, reliable in action, long service life.
Description
Technical field
The present invention relates to a kind of agricultural machinery, and in particular to a kind of fan back-flushing valve.
Background technique
Agricultural machinery refers to during crop-planting industry and Animal husbandry production, Yi Jinong, livestock products preliminary working and processing
Various machinery used in the process.Agricultural machinery includes farm power machinery, farmland construction machinery, soil cultivating machine, kind
It plants mechanical with fertilizer machinery, plant protection mechanism, farmland discharging-irrigating machinery, crop harvesting machine, agricultural product processing machinery, animal husbandry
With farm transportation machinery etc..The direct driving fan operation of engine is mostly used in agricultural machinery at present, since agricultural machinery operating condition is severe, in work
There are crops powder, dust for much crushing etc. to be adsorbed onto cooler in work, radiating condition can be caused to be deteriorated, leads to oil temperature liter
Height, thus when oil temperature increases, it needs to shut down, waits and cleaned again after cooling at engines, it is time-consuming and laborious.
Summary of the invention
To solve the problem of that being easy absorption dust in background technique on existing agricultural machinery influences product cooling performance, this
Invention provides a kind of fan back-flushing valve.
The technical scheme is that a kind of fan back-flushing valve, including reversal valve, pressure compensator, main oil inlet, first
Oil return opening, the first actuator port and the second actuator port, first actuator port are connected with the work of multi-way valve connection, institute
The second actuator port stated is connected with fan blade control mechanism, the reversal valve have make winner's oil inlet and the second work
Make the first position and the second position for making winner's oil inlet be connected with the second actuator port that hydraulic fluid port mutually disconnects, the pressure
Compensator includes first, second mouthful, third mouth and the 4th mouthful, and the pressure compensator is when reversal valve is in first position
Winner's oil inlet is set to be connected by first, second mouthful with the first actuator port, the pressure compensator is at reversal valve
It is connected in second position Shi Shi winner oil inlet with the 4th mouthful, the pressure oil at described the 4th mouthful is connected with the first control chamber
Logical pressure compensator of opening makes the 4th mouthful of the first hydraulic fluid port receiving that is connected by third mouth with the second actuator port and makes
Pressure oil and it is connected by second mouthful with the first actuator port at main oil inlet.
As an improvement of the present invention, the pressure compensator is equipped with the second control chamber, first control
Intracavitary to be equipped with control spring, pressure compensator first when reversal valve is in first position is connected with the second control chamber
It is logical that winner's oil inlet is made to be connected with the first actuator port.
As a further improvement of the present invention, the pressure compensator is two-position four-way valve.
As a further improvement of the present invention, throttling is equipped between the reversal valve and the 4th mouthful of pressure compensator
Mouthful.
As a further improvement of the present invention, the pressure compensator passes through commutation when reversal valve is in first position
Valve is connected with the first oil return opening.
As a further improvement of the present invention, perseverance is equipped between the third mouth and the second actuator port of the pressure compensator
Valve is flowed, the permanent flow valve is used to choose the pressure oil of the second actuator port and is connected with the second oil return opening.
It as a further improvement of the present invention, further include logical valve, the logical valve oil inlet is used for and pressure compensation
Device third mouth is connected, and logical valve oil outlet is connected with the first oil return opening, and the logical valve has the first position closed
With opening so that the second position that pressure compensator third mouth is connected with the first oil return opening.
As a further improvement of the present invention, the logical valve includes spring cavity and logical valve control chamber, and described patrols
Valve oil inlet is collected to be connected with logical valve control chamber.
As a further improvement of the present invention, filter is equipped at the main oil inlet.
As a further improvement of the present invention, main overflow valve is equipped between the main oil inlet and the first oil return opening.
The invention has the advantages that being provided with the first actuator port and the second actuator port, pass through the first actuator port
It is connected with the work of multi-way valve connection, is connected by the second actuator port with fan blade control mechanism, thus anti-by this
The angle of the adjustable fan of valve is blown, its fan blade angle can allowed at regular intervals to rotate, realize blowing function, into
And blow sundries in cooler off, to reduce oil temperature, fan reversion is may be implemented in the present invention, and it is normal dynamic not influence work connection
Make.The advantages that present invention also has structure simple, easy to assembly, reliable in action, long service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
In figure, 1, overflow valve；2, logical valve；3, permanent flow valve；4, pressure compensator；1., first；2., second mouthful；③,
Third mouth；4., the 4th mouthful；5., the first control chamber；6., the second control chamber；5, restriction；6, reversal valve；7, filter；A,
One actuator port；B, the second actuator port；P, main oil inlet；T, the first oil return opening；L, the second oil return opening.
Specific embodiment
Embodiments of the present invention is further illustrated with reference to the accompanying drawing:
As shown in Figure 1, a kind of fan back-flushing valve, including reversal valve 6, pressure compensator 4, main oil inlet P, the first oil return inlet T,
The work connection of one actuator port A and the second actuator port B, the first actuator port A and multi-way valve is connected, and described the
Two actuator port B are connected with fan blade control mechanism, and specifically, fan blade control mechanism can be control oil cylinder,
The blade adjustable-angle of fan is rotated by the angle that control oil cylinder controls fan blade, to realize the effect of fan blowback
Fruit.The reversal valve 6 has and makes winner's oil inlet P and the first position disconnected the second actuator port phase B and make winner's oil inlet
The second position that mouthful P is connected with the second actuator port B, the pressure compensator 4 including first 1., second mouthful 2., the
Three mouthfuls 3. with the 4th mouthful 4., the pressure compensator 4 is in first position Shi Shi winner oil inlet P by the in reversal valve 6
Flatly, it is connected with the first actuator port A for second mouthful, the pressure compensator 4 makes when reversal valve 6 is in the second position
Main oil inlet P is connected with the 4th mouthful, and 5. the pressure oil at described the 4th mouthful is connected with the first control chamber opens pressure benefit
Repaying device makes the 4th mouthful of first hydraulic fluid port that is connected by third mouth with the second actuator port and makes receive to press at main oil inlet
Power oil is simultaneously connected by second mouthful with the first actuator port.Specifically, the reversal valve is solenoid directional control valve, more specifically
Say, the reversal valve be two-position four way change valve.The invention has the advantages that being provided with the first actuator port and second
Actuator port is connected with the work of multi-way valve connection by the first actuator port, passes through the second actuator port and fan blade control
Mechanism processed is connected, thus by the angle of the adjustable fan of the back-flushing valve, can allow at regular intervals its fan leaf
The rotation of piece angle, realizes blowing function, and then blow sundries in cooler off, to reduce oil temperature, fan is may be implemented in the present invention
Reversion, and work connection regular event is not influenced.The present invention also has structure simple, easy to assembly, reliable in action, service life
The advantages that long.
6. the pressure compensator 4 is equipped with the second control chamber, first control chamber is 5. interior to be equipped with control spring,
The pressure compensator 4 first when reversal valve is in first position be connected with the second control chamber make winner's oil inlet with
First actuator port is connected.The pressure compensator is two-position four-way valve.Such structure is changing pressure compensator
When being in first position to valve, winner's oil inlet can be made to be connected to the first actuator port, not influence work connection regular event；When changing
To after valve commutation, preferential fuel feeding gives the second actuator port, so that fan blade can change angle, realizes fan blowback function
Can, and work connection regular event is not influenced.
Restriction 5 is equipped between the 4th mouthful of the reversal valve 6 and pressure compensator 4.Pressure compensator determines throttling
The flow of mouth, extra flow finally arrive multi-way valve work connection by pressure compensator to the first actuator port.
The pressure compensator is connected by reversal valve with the first oil return opening when reversal valve is in first position.This
Sample makes when reversal valve is in first position, and the pressure oil of pressure compensator and the second actuator port can reliable oil return
Case.
Permanent flow valve 3 is equipped between the third mouth and the second actuator port of the pressure compensator 4, the permanent flow valve 3 is used
It is connected in the pressure oil for choosing the second actuator port B and with the second oil return opening L.The setting of permanent flow valve is so that the second actuator port
Pressure oil can reliable oil return box.The second oil return opening L oil return box is arranged in the present invention, has back at common first oil return inlet T
Pressure influences the second actuator port pressure oil oil return box.In the actual production process, after fan, which inverts, to be stopped, the second working oil
The pressure oil of mouth is by permanent flow valve oil return box, so that fan blade angle is replied, fan rotates forward again, avoids dust heap
Product.
The invention also includes logical valve 2,2 oil inlet of logical valve is used to be connected with pressure compensator third mouth,
Logical valve oil outlet is connected with the first oil return opening, and the logical valve has the first position closed and opens so that pressure is mended
Repay the second position that device third mouth is connected with the first oil return opening.Specifically, the logical valve 2 includes spring cavity and logic
Valve control chamber, the logical valve oil inlet are connected with logical valve control chamber.The setting of logical valve is so that the second actuator port
Place's security performance is higher, and when there is pressure rise at the system failure or the second actuator port, pressure oil can overcome and patrol at this time
The pressure for collecting valve spring chamber, which is opened, is in the second position, so that the second actuator port is connected with the first oil return opening, realizes draining
Avoid detonation.
Filter 7 is equipped at the main oil inlet P.Main overflow is equipped between the main oil inlet P and the first oil return inlet T
Valve 1.Such structure makes in system oil more preferable, and product safety performance is higher.
When solenoid directional control valve 6 is in power loss, the second actuator port B connecting with fan blade control oil cylinder is by constant current
Valve 3 is connected to the second oil return opening L oil return.The hydraulic oil of main oil inlet P passes through filter 7, then is connected to by pressure compensator 4
First working hole is communicated with the work of multi-way valve connection.
When solenoid directional control valve 6 is in electric, the hydraulic oil of main oil inlet P passes through filter 7, then passes through electromagnetic switch
Valve 6 is then passed through 4 to the second actuator port of restriction 5 and pressure compensator, while limiting the flow of permanent flow valve as 0.7L/min
Flow to the second oil return opening L, then fan blade controls cylinder action, so that fan angle change, realizes fan blowback.Pressure
Force compensating device 4 determines that the flow of restriction 5, extra flow pass through 4 to the first working hole of pressure compensator, finally arrive multi-way valve
Work connection.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
Every technical staff's notice: of the invention although the present invention is described according to above-mentioned specific embodiment
Invention thought be not limited in the invention, any repacking with inventive concept will all be included in this patent protection of the patent right
In range.
Claims (10)
1. a kind of fan back-flushing valve, it is characterised in that: including reversal valve, pressure compensator, main oil inlet, the first oil return opening,
One actuator port and the second actuator port, first actuator port are connected with the work of multi-way valve connection, and described second
Actuator port is connected with fan blade control mechanism, the reversal valve have make winner's oil inlet and the second actuator port phase
The first position of disconnection and the second position for making winner's oil inlet be connected with the second actuator port, the pressure compensator packet
Include first, second mouthful, third mouth and the 4th mouthful, the pressure compensator reversal valve be in first position Shi Shi winner into
Hydraulic fluid port is connected by first, second mouthful with the first actuator port, and the pressure compensator is in second in reversal valve
Zhi Shishi winner oil inlet is connected with the 4th mouthful, and the pressure oil at described the 4th mouthful is connected with the first control chamber opens pressure
Force compensating device makes the 4th mouthful of first hydraulic fluid port that is connected by third mouth with the second actuator port and makes receive main oil inlet
Place's pressure oil is simultaneously connected by second mouthful with the first actuator port.
2. a kind of fan back-flushing valve according to claim 1, it is characterised in that the pressure compensator is equipped with second
Control chamber, first control chamber is interior to be equipped with control spring, and the pressure compensator is when reversal valve is in first position
First is connected with the second control chamber makes winner's oil inlet be connected with the first actuator port.
3. a kind of fan back-flushing valve according to claim 1, it is characterised in that the pressure compensator is two-position four-way
Valve.
4. a kind of fan back-flushing valve according to claim 1, it is characterised in that the reversal valve and pressure compensator
Restriction is equipped between 4th mouthful.
5. a kind of fan back-flushing valve according to claim 1, it is characterised in that the pressure compensator is at reversal valve
It is connected by reversal valve with the first oil return opening when first position.
6. a kind of fan back-flushing valve according to claim 1, it is characterised in that the third mouth of the pressure compensator and
Between two actuator ports be equipped with permanent flow valve, the permanent flow valve be used for choose the second actuator port pressure oil and with the second oil return
Mouth is connected.
7. a kind of fan back-flushing valve according to claim 1, it is characterised in that further include logical valve, the logical valve into
Hydraulic fluid port with pressure compensator third mouth for being connected, and logical valve oil outlet is connected with the first oil return opening, the logical valve
First position and opening with closing are so that the second position that pressure compensator third mouth is connected with the first oil return opening.
8. a kind of fan back-flushing valve according to claim 7, it is characterised in that the logical valve includes spring cavity and patrols
Valve control chamber is collected, the logical valve oil inlet is connected with logical valve control chamber.
9. a kind of fan back-flushing valve according to claim 1, it is characterised in that be equipped with filter at the main oil inlet.
10. a kind of fan back-flushing valve according to claim 1, it is characterised in that the main oil inlet and the first oil return opening it
Between be equipped with main overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089681.6A CN109667781A (en) | 2019-01-30 | 2019-01-30 | A kind of fan back-flushing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089681.6A CN109667781A (en) | 2019-01-30 | 2019-01-30 | A kind of fan back-flushing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109667781A true CN109667781A (en) | 2019-04-23 |
Family
ID=66150027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910089681.6A Pending CN109667781A (en) | 2019-01-30 | 2019-01-30 | A kind of fan back-flushing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109667781A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204003552U (en) * | 2014-08-04 | 2014-12-10 | 北京市三一重机有限公司 | Hydraulic oil radiation fan speed-adjusting and control system and engineering machinery |
| JP2017101791A (en) * | 2015-12-04 | 2017-06-08 | 日立建機株式会社 | Hydraulic motor control device |
| CN207513964U (en) * | 2017-11-30 | 2018-06-19 | 山推工程机械股份有限公司 | A kind of temperature-controlled fan reverse control system |
| CN209294175U (en) * | 2019-01-11 | 2019-08-23 | 雷沃重工股份有限公司 | Fan blowback control valve, fan blowback hydraulic system and farm machinery |
| CN209557313U (en) * | 2019-01-30 | 2019-10-29 | 圣邦集团有限公司 | A kind of fan back-flushing valve |
-
2019
- 2019-01-30 CN CN201910089681.6A patent/CN109667781A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204003552U (en) * | 2014-08-04 | 2014-12-10 | 北京市三一重机有限公司 | Hydraulic oil radiation fan speed-adjusting and control system and engineering machinery |
| JP2017101791A (en) * | 2015-12-04 | 2017-06-08 | 日立建機株式会社 | Hydraulic motor control device |
| CN207513964U (en) * | 2017-11-30 | 2018-06-19 | 山推工程机械股份有限公司 | A kind of temperature-controlled fan reverse control system |
| CN209294175U (en) * | 2019-01-11 | 2019-08-23 | 雷沃重工股份有限公司 | Fan blowback control valve, fan blowback hydraulic system and farm machinery |
| CN209557313U (en) * | 2019-01-30 | 2019-10-29 | 圣邦集团有限公司 | A kind of fan back-flushing valve |
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