CN110762074A - Oil valve device for agricultural machinery - Google Patents
Oil valve device for agricultural machinery Download PDFInfo
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- CN110762074A CN110762074A CN201810834402.XA CN201810834402A CN110762074A CN 110762074 A CN110762074 A CN 110762074A CN 201810834402 A CN201810834402 A CN 201810834402A CN 110762074 A CN110762074 A CN 110762074A
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- oil
- valve
- cavity
- valve rod
- oil return
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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
- F15B13/025—Pressure reducing valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses an oil valve device for agricultural machinery, which comprises a valve body and a valve rod, wherein an oil inlet and an oil outlet are arranged on the valve body, the oil inlet is communicated with an oil inlet channel, the oil outlet is communicated with an oil return channel, an oil receiving port is arranged on the surface of the valve body and is communicated with the oil inlet channel, overload valves are arranged on two sides of the valve body and are communicated with the oil return channel; a plurality of valve rod cavities are arranged in the valve body, the valve rod cavities are respectively communicated with the oil receiving port and the oil inlet channel, two end parts of the valve rod cavities are communicated with the oil return channel, an oil return branch channel is connected between every two adjacent valve rod cavities, and the middle parts of the valve rod cavities at the tail ends in the flowing direction of hydraulic oil are communicated with the oil return channel; the integral structure is adopted, the sealing performance is good, and the oil leakage phenomenon is avoided; the oil duct has the advantages of relatively simple structure, simplicity and convenience in cleaning, capability of ensuring the cleanliness of the interior of the oil duct, reducing the valve clamping probability and oil resistance, reducing hydraulic loss and further reducing the heating rate of the system, compact structure, fewer machined parts, shortened production period and correspondingly reduced manufacturing cost.
Description
Technical Field
The invention relates to a valve body, in particular to a multi-way valve used for a hydraulic system on agricultural machinery.
Background
In the hydraulic system of agricultural machinery in the prior art, all use the oil valve to control work, the valve rod intracavity of the multi-way valve that uses at present all is equipped with nine working grooves, and all has two oil return ducts that communicate its valve body both sides on every valve body for carry hydraulic oil, the multi-way valve of above-mentioned this kind of structure is because the working groove is more, therefore its volume is great, the quality is also correspondingly great, and the flow is less, the efficiency of carrying hydraulic oil is lower, has seriously influenced the smooth nature that agricultural machinery controlled. And the valve body in the prior art adopts a split type sealing connection mode, so that a plurality of sealing points are arranged, and the phenomenon of oil flowing at the sealing points is easily generated after long-term use, thereby influencing the efficiency of hydraulic transmission.
Disclosure of Invention
The invention aims to solve the technical problem of providing an oil valve device for agricultural machinery, which has small volume and high oil mass delivery efficiency.
In order to solve the technical problems, the technical scheme of the invention is as follows: the oil valve device for the agricultural machinery comprises a valve body and a valve rod, wherein an oil inlet and an oil outlet are formed in the valve body, the oil inlet is communicated with an oil inlet channel arranged in the valve body, the oil outlet is communicated with an oil return channel arranged in the valve body, oil receiving ports are further distributed on the surface of the valve body and communicated with the oil inlet channel, overload valve holes communicated with the oil return channel are formed in two sides of the valve body, and overload valves are installed in the overload valve holes; be equipped with a plurality of accomodations in the valve body the valve rod chamber of valve rod, the valve rod chamber communicates respectively connect the hydraulic fluid port with the oil feed passageway, just valve rod chamber both ends communicate respectively the oil return passageway, adjacent two be connected with oil return branch passageway between the valve rod chamber, follow hydraulic oil flow direction terminal the valve rod chamber middle part communicates the oil return passageway.
As a preferred technical solution, the oil return passage is arranged to penetrate the valve body.
As a preferred technical scheme, a safety valve hole communicated with the oil inlet is formed in the valve body, and a safety valve is installed in the safety valve hole.
As a preferred technical scheme, one-way valves are respectively arranged between the oil inlet channel and the valve rod cavity.
As a preferred technical scheme, the valve rod cavity comprises a left oil return channel, a left working cavity, a left oil inlet cavity, a left oil return cavity, a right oil inlet cavity, a right working cavity and a right oil return channel which are sequentially arranged, wherein the left oil return cavity of the valve rod cavity is communicated with the right oil return cavity of the valve rod cavity and the left oil return cavity of the valve rod cavity is communicated with the oil return channel through the oil return branch channel.
As another preferred technical scheme, the valve rod cavity comprises a left oil return passage, a left working cavity, a left oil inlet cavity, a left oil return cavity, a right oil inlet cavity, a right working cavity and a right oil return passage which are sequentially arranged, wherein the right oil return cavity of the valve rod cavity is communicated with the left oil return cavity of the valve rod cavity and the right oil return cavity of the valve rod cavity at the last path through the oil return branch passage.
As a preferable technical scheme, a middle valve rod section is arranged on the valve rod, and the diameter of the middle valve rod section is smaller than that of the valve rod.
As a preferable technical solution, the valve rod cavity has three paths, and the valve rod is slidably disposed in the valve rod cavity.
As a preferred technical scheme, the number of the oil receiving ports is six, each valve body cavity is communicated with two oil receiving ports, and the two oil receiving ports are distributed on two sides of the one-way valve relatively.
As a preferred technical scheme, the valve body comprises an upper valve body and a lower valve body, the upper valve body is connected with the lower valve body in a sealing mode, and the oil inlet, the oil outlet and the oil receiving port are respectively formed in the upper valve body.
By adopting the technical scheme, the oil valve device for the agricultural machinery comprises a valve body and a valve rod, wherein an oil inlet and an oil outlet are formed in the valve body, the oil inlet is communicated with an oil inlet channel arranged in the valve body, the oil outlet is communicated with an oil return channel arranged in the valve body, oil receiving ports are further distributed on the surface of the valve body and communicated with the oil inlet channel, overload valve holes communicated with the oil return channel are formed in two sides of the valve body, and overload valves are arranged in the overload valve holes; a plurality of valve rod cavities for accommodating the valve rods are sequentially arranged in the valve body, the valve rod cavities are respectively communicated with the oil receiving port and the oil inlet channel, two end parts of the valve rod cavities are respectively communicated with the oil return channel, an oil return branch channel is connected between every two adjacent valve rod cavities, and the middle parts of the valve rod cavities at the tail ends in the flowing direction of hydraulic oil are communicated with the oil return channel; the invention has the beneficial effects that: the integral structure is adopted, the sealing performance is good, and the oil leakage phenomenon of the valve body is avoided; the structure of the oil duct is relatively simple, the cleaning is simple and convenient, the cleanliness of the interior of the oil duct is guaranteed, the valve clamping probability is reduced, the oil resistance is reduced, the hydraulic loss is reduced, the heating rate of the system is reduced, the structure is compact, the number of machined parts is reduced, the production period is shortened, and the manufacturing cost is correspondingly reduced.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 is a cross-sectional view of a structure of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the structure of an embodiment of the present invention with the valve stem removed;
FIG. 3 is a side sectional view of an embodiment of the present invention;
FIG. 4 is a top view of an embodiment of the present invention;
in the figure: 1-a valve body; 2-a valve stem; 3-an oil inlet; 4-an oil inlet channel; 5-an oil return channel; 6-return oil branch channel; 7-left oil return channel; 8-a left working chamber; 9-a left oil inlet cavity; 10-left oil return cavity; 11-right oil return cavity; 12-right oil inlet cavity; 13-right working chamber; 14-right oil return; 15-safety valve hole; 16-a one-way valve; 17-an oil outlet; 18-oil receiving port; 19-overload valve bore.
Detailed Description
The invention is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the oil valve device for agricultural machinery comprises a valve body 1 and a valve rod 2, wherein an oil inlet 3 and an oil outlet 17 are arranged on the valve body 1, the oil inlet 3 is communicated with an oil inlet channel 4 arranged in the valve body 1, the oil outlet 17 is communicated with an oil return channel 5 arranged in the valve body 1, oil receiving ports 18 are further distributed on the surface of the valve body 1, the oil receiving ports 18 are communicated with the oil inlet channel 4, overload valve holes 19 communicated with the oil return channel 5 are arranged on two sides of the valve body 1, and overload valves are installed in the overload valve holes 19; be equipped with a plurality of accomodations in the valve body 1 the valve rod chamber of valve rod 2, the valve rod chamber communicates respectively connect the hydraulic fluid port 18 with oil feed passageway 4, just valve rod chamber both ends communicate respectively return oil passageway 5, adjacent two be connected with return oil branch passageway 6 between the valve rod chamber, it is terminal along the hydraulic oil flow direction the valve rod chamber middle part communicates return oil passageway 5, just return oil passageway 5 link up 1 setting of valve body.
In order to improve the use safety, a safety valve hole 15 communicated with the oil inlet 3 is formed in the valve body 1, and a safety valve is installed in the safety valve hole 15. And one-way valves 16 are respectively arranged between the oil inlet channel 4 and the valve rod cavity to control the flow direction of the hydraulic oil.
The valve rod cavity comprises a left oil return channel 7, a left working cavity 8, a left oil inlet cavity 9, a left oil return cavity 10, a right oil return cavity 11, a right oil inlet cavity 12, a right working cavity 13 and a right oil return channel 14 which are sequentially arranged, wherein the left oil return cavity 10 of the valve rod cavity is communicated with an adjacent lower oil return channel 6 through the right oil return cavity 11 and the last oil return channel of the valve rod cavity, and the left oil return cavity 10 of the valve rod cavity is communicated with the oil return channel 5.
Of course the connection setting mode of the oil return branch passage 6 can also be set to the following form, the valve rod cavity includes the left oil return way 7, the left working chamber 8, the left oil inlet chamber 9, the left oil return chamber 10, the right oil return chamber 11, the right oil inlet chamber 12, the right working chamber 13 and the right oil return way 14 that set gradually, go all the way the valve rod cavity the right oil return chamber 11 passes through the oil return branch passage 6 communicates adjacent lower the valve rod cavity the left oil return chamber 10, the last way the valve rod cavity the right oil return chamber 11 communicates the oil return passage 5, the oil return branch passage 6 that is about to be the oil return and the oil return branch passage 6 mirror image setting in figure 2.
In this embodiment, the valve rod 2 is provided with a middle valve rod section, and the diameter of the middle valve rod section is smaller than that of the valve rod 2. The valve rod cavity is three ways, and the valve rod 2 is arranged in the valve rod cavity in a sliding mode. Of course, the present embodiment is not limited to the three-way valve rod cavity structure, and other numbers of valve rod cavities, such as two-way valve rod cavities, may be provided according to the practical situation of use. As the cooperation with three way valve rod chamber uses, connect the hydraulic fluid port 18 to set up to six, every 1 chamber of valve body communicate two connect the hydraulic fluid port 18, and two connect the hydraulic fluid port 18 distributed in relatively the both sides of check valve 16.
In this embodiment, the valve body 1 includes an upper valve body and a lower valve body, the upper valve body is hermetically connected to the lower valve body, and the oil inlet 3, the oil outlet 17 and the oil receiving port 18 are respectively disposed on the upper valve body. The valve plate adopts an integral structure, has good sealing performance and avoids the oil leakage phenomenon between the valve plates; the structure of the oil duct is relatively simple, the cleaning is simple and convenient, the cleanliness of the interior of the oil duct is guaranteed, the valve clamping probability is reduced, the liquid resistance is reduced, the hydraulic loss is reduced, the heating rate of the system is reduced, the structure is compact, the number of machined parts is reduced, the production period is shortened, and the manufacturing cost is correspondingly reduced.
When the valve rod slides, the right oil inlet cavity and the right working cavity, the left oil return channel and the left working cavity are respectively opened, and when the valve rod slides reversely, the right working cavity and the right oil return channel, the left working cavity and the left oil inlet cavity are respectively communicated, so that the valve rod is matched with the one-way valve to work, and corresponding reversing work is realized.
When the valve rod is in the neutral position, the left oil return cavity, the right oil return cavity and the oil return branch channel enable hydraulic oil to pass through the oil inlet channel from the oil inlet to the oil return channel; when the valve rod moves, the left oil return cavity, the right oil return cavity and the oil return branch channel are cut off, the pressure at the oil inlet on the valve body is increased, the one-way valve is opened, hydraulic oil enters the left working cavity or the right working cavity, and the hydraulic oil returning from the working cavity directly enters the left oil return cavity channel or the right oil return channel.
According to the invention, the oil return branch passages are respectively connected among the valve rod cavities, when the valve rod is positioned at the middle position, hydraulic oil can flow into the oil return passage through the positions among the left oil return cavity, the right oil return cavity and the oil return branch passages on the valve rod cavity, so that the transition smoothness of each working position of the agricultural machinery is improved when the agricultural machinery is controlled, and meanwhile, the control accuracy and the control rapidity are improved. The valve rod cavity is only provided with eight working grooves, so that the structure is simplified, the overall size and weight of the valve body are reduced, the flow of hydraulic oil can be improved, and the control and the use are more convenient.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. Oil valve device for agricultural machinery, including valve body and valve rod, be equipped with oil inlet and oil-out on the valve body, the oil inlet intercommunication sets up oil feed passageway in the valve body, the oil-out intercommunication sets up oil return path in the valve body, its characterized in that: the oil receiving port is also distributed on the surface of the valve body and is communicated with the oil inlet channel, overload valve holes communicated with the oil return channel are formed in the two sides of the valve body, and overload valves are installed in the overload valve holes; be equipped with a plurality of accomodations in the valve body the valve rod chamber of valve rod, the valve rod chamber communicates respectively connect the hydraulic fluid port with the oil feed passageway, just valve rod chamber both ends communicate respectively the oil return passageway, adjacent two be connected with oil return branch passageway between the valve rod chamber, follow hydraulic oil flow direction terminal the valve rod chamber middle part communicates the oil return passageway.
2. An oil valve device for agricultural machinery as claimed in claim 1, wherein: the oil return passage is arranged to penetrate through the valve body.
3. An oil valve device for agricultural machinery as claimed in claim 1, wherein: the valve body is provided with a safety valve hole communicated with the oil inlet, and a safety valve is arranged in the safety valve hole.
4. An oil valve device for agricultural machinery as claimed in claim 1, wherein: and one-way valves are respectively arranged between the oil inlet channel and the valve rod cavity.
5. An oil valve device for agricultural machinery as claimed in claim 1, 2, 3 or 4, wherein: the valve rod cavity comprises a left oil return channel, a left working cavity, a left oil inlet cavity, a left oil return cavity, a right oil inlet cavity, a right working cavity and a right oil return channel which are sequentially arranged, wherein the left oil return cavity of the valve rod cavity is communicated with the right oil return cavity of the valve rod cavity through an oil return branch channel, and the left oil return cavity of the valve rod cavity is communicated with the oil return channel at the last path.
6. An oil valve device for agricultural machinery as claimed in claim 1, 2, 3 or 4, wherein: the valve rod cavity comprises a left oil return channel, a left working cavity, a left oil inlet cavity, a left oil return cavity, a right oil inlet cavity, a right working cavity and a right oil return channel which are sequentially arranged, wherein the right oil return cavity of the valve rod cavity is communicated with the left oil return cavity and the last oil return cavity of the valve rod cavity through an oil return branch channel which is adjacent to the oil return branch channel.
7. An oil valve device for agricultural machinery as claimed in claim 1, wherein: the valve rod is provided with a middle valve rod section, and the diameter of the middle valve rod section is smaller than that of the valve rod.
8. An oil valve device for agricultural machinery as claimed in claim 4, wherein: the valve rod cavity is three ways, and the valve rod is arranged in the valve rod cavity in a sliding mode.
9. An oil valve device for agricultural machinery as claimed in claim 1 or 8, wherein: the number of the oil receiving ports is six, each valve body cavity is communicated with two oil receiving ports, and the two oil receiving ports are distributed on two sides of the one-way valve relatively.
10. An oil valve device for agricultural machinery as claimed in claim 9, wherein: the valve body comprises an upper valve body and a lower valve body, the upper valve body is connected with the lower valve body in a sealing mode, and the oil inlet, the oil outlet and the oil receiving port are respectively formed in the upper valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810834402.XA CN110762074A (en) | 2018-07-26 | 2018-07-26 | Oil valve device for agricultural machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810834402.XA CN110762074A (en) | 2018-07-26 | 2018-07-26 | Oil valve device for agricultural machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110762074A true CN110762074A (en) | 2020-02-07 |
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ID=69327892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810834402.XA Pending CN110762074A (en) | 2018-07-26 | 2018-07-26 | Oil valve device for agricultural machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110762074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719487A (en) * | 2021-07-21 | 2021-11-30 | 北京中金泰达电液科技有限公司 | Low-temperature hydraulic combined valve terminal |
-
2018
- 2018-07-26 CN CN201810834402.XA patent/CN110762074A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719487A (en) * | 2021-07-21 | 2021-11-30 | 北京中金泰达电液科技有限公司 | Low-temperature hydraulic combined valve terminal |
| CN113719487B (en) * | 2021-07-21 | 2022-04-15 | 北京中金泰达电液科技有限公司 | Low-temperature hydraulic combined valve terminal |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200207 |
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| WD01 | Invention patent application deemed withdrawn after publication |