CN217207925U - Exhaust valve for tractor hydraulic system and tractor - Google Patents
Exhaust valve for tractor hydraulic system and tractor Download PDFInfo
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- CN217207925U CN217207925U CN202221175659.7U CN202221175659U CN217207925U CN 217207925 U CN217207925 U CN 217207925U CN 202221175659 U CN202221175659 U CN 202221175659U CN 217207925 U CN217207925 U CN 217207925U
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- joint
- air outlet
- outlet channel
- hydraulic system
- valve core
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Abstract
The utility model relates to an exhaust valve for a tractor hydraulic system and a tractor, wherein the exhaust valve for the tractor hydraulic system comprises a joint, a valve core and a spring, an air inlet channel, an installation cavity and an air outlet channel which are sequentially communicated are formed inside the joint, and the valve core is movably assembled in the installation cavity of the joint; a first sealing ring is arranged on the inner side wall of the mounting cavity and close to the air outlet channel, one end of the spring is connected with the valve core, and the other end of the spring is connected with the inner side wall of the mounting cavity and close to the air outlet channel; wherein, the shutoff of the passageway of giving vent to anger is realized through sealed butt with first sealing washer to the one end of case, and the other end of case and the one end butt of inlet channel. When having gas in the pipeline, gaseous accessible case and the automatic discharge in the clearance of installation cavity inside wall, gaseous exhaust back, under the effect of oil pressure, the one end of case and the sealed butt of first sealing washer are in order to plug up gas outlet channel, with discharge valve self-closing, can satisfy the exhaust requirement, still avoid fluid to leak convenient and fast.
Description
Technical Field
The utility model relates to a tractor correlation technique field, concretely relates to tractor is discharge valve and tractor for hydraulic system.
Background
In a tractor hydraulic system, as the number of hydraulic components increases, the arrangement of pipelines becomes more and more complicated. The difficulty brought by the method is that a large amount of air exists in the pipeline after the pipeline is in an initial starting stage and is placed for a period of time, and if the air is not exhausted in time, the damage is caused to hydraulic elements and the pipeline, and some elements which are controlled more sensitively even some false actions occur, so that the influence is great. The existing hydraulic system generally takes out gas automatically through liquid circulation, or detaches a pipeline for exhausting, so that the operation is convenient, and the problem of untimely exhausting still exists.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve one or several kinds among the prior art problem, provide a tractor is discharge valve and tractor for hydraulic system.
The utility model provides an above-mentioned technical problem's technical scheme as follows: an exhaust valve for a tractor hydraulic system comprises a joint, a valve core and a spring, wherein an air inlet channel, an installation cavity and an air outlet channel which are sequentially communicated are formed in the joint, and the valve core is movably assembled in the installation cavity of the joint; a first sealing ring is arranged on the inner side wall of the mounting cavity and close to the air outlet channel, one end of the spring is connected with the valve core, and the other end of the spring is connected with the inner side wall of the mounting cavity and close to the air outlet channel; one end of the valve core is in sealing and abutting joint with the first sealing ring to realize the plugging of the air outlet channel, and the other end of the valve core is in abutting joint with one end of the air inlet channel.
The beneficial effects of the utility model are that: the utility model discloses a discharge valve, set up the case through the activity in the installation cavity, when having gas in the pipeline, because gas pressure can not be very big, gas can make the case open inlet channel, and the extrusion spring, gas can be through the clearance automatic discharge of case with the installation cavity inside wall, after the gas outgoing, the case is automatic to fall back under the spring action, under the effect of oil pressure, the one end and the sealed butt of first sealing washer of case are in order to plug up gas outlet channel, discharge valve self-closing, can satisfy the exhaust requirement, still avoid fluid to leak, and is convenient and fast.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, one end of the valve core is circumferentially provided with a first annular notch, and the valve core is abutted with the first sealing ring through the first annular notch to realize the sealing of the air outlet channel.
The beneficial effect of adopting the further scheme is that: through setting up first annular breach, be favorable to with the sealed butt of first sealing washer adaptation, the oil pressure that utilizes fluid blocks up the passageway that produces oil.
Further, the other end of the valve core is provided with a second sealing ring, and the other end of the valve core is in sealing butt joint with the inner side wall of the installation cavity through the second sealing ring to realize the sealing of the air inlet channel.
The beneficial effect of adopting the further scheme is that: through setting up the second sealing washer, when not having gaseous in the pipeline, can block up air inlet passage.
Further, the inner diameter of the installation cavity is larger than that of the air inlet channel, a sealing step is formed between the installation cavity and the air inlet channel, and a sealing inclined surface matched with the second sealing ring is arranged at the edge position of an inner ring of the sealing step.
The beneficial effect of adopting the further scheme is that: the sealing inclined plane is utilized, so that the sealing device is matched with the second sealing ring, and the sealing effect is better.
Furthermore, a second annular notch is formed in the periphery of the other end of the valve core, and the second sealing ring is assembled in the second annular notch.
The beneficial effect of adopting the further scheme is that: through setting up second annular breach, can assemble the second sealing washer in second annular breach, seal structure is compact stable.
Furthermore, a first limiting groove is formed in the position, close to the air outlet channel, of the inner side wall of the installation cavity, a second limiting groove is formed in one end of the valve core, one end of the spring is connected to the second limiting groove, and the other end of the spring is connected to the first limiting groove.
The beneficial effect of adopting the further scheme is that: the two ends of the spring are respectively connected in the limiting grooves, so that the dislocation of the spring is avoided, and the structure is compact and stable.
Further, the internal diameter of installation cavity is greater than air outlet channel's internal diameter, first sealing washer sets up week side of spring.
The beneficial effect of adopting the further scheme is that: the inner diameter of the mounting cavity is larger than that of the air outlet channel, so that stable assembly of the valve core is facilitated.
Further, the joint comprises a first joint and a second joint which are coaxially arranged, the air inlet channel and the installation cavity are arranged in the first joint, the air outlet channel is arranged in the second joint, and one end of the second joint is in threaded connection with the outer side wall of the installation cavity of the first joint; and the outer side wall of the air inlet channel of the first joint is provided with an external thread and a third sealing ring, and the outer side wall of the first joint is also provided with a flange edge.
The beneficial effect of adopting the further scheme is that: the first joint and the second joint are matched, so that the valve core is convenient to assemble; the first joint may be fitted to the hydraulic line through a flange of an outer side wall of the first joint and sealed by a third packing.
Furthermore, be equipped with the exhaust hole on outlet channel's the lateral wall, the one end that inlet channel was kept away from to outlet channel is equipped with dustproof cap, dustproof cap cover establishes outlet channel's tip and with the relative interval arrangement in exhaust hole.
The beneficial effect of adopting the further scheme is that: through setting up dustproof cap, can play dustproof effect.
A tractor, includes foretell tractor exhaust valve for hydraulic system.
The utility model has the advantages that: the utility model discloses a tractor through set up discharge valve in tractor's hydraulic system, can be with gaseous automatic discharge, under the oil pressure effect after the gas outgoing, valve self-closing. Therefore, the use requirement can be met, and the operation is convenient and quick.
Drawings
FIG. 1 is a schematic structural view of an initial state of an exhaust valve for a tractor hydraulic system according to the present invention;
FIG. 2 is a schematic structural view of the exhaust state of the exhaust valve for the tractor hydraulic system according to the present invention;
fig. 3 is the structure schematic diagram of the exhaust finishing state of the exhaust valve for the tractor hydraulic system.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a first joint; 11. an air intake passage; 12. a mounting cavity; 13. a third seal ring; 14. a first limit groove; 15. an external thread; 16. a flange edge; 17. a first seal ring; 18. sealing the step;
2. a second joint; 21. an air outlet channel; 22. an exhaust hole;
3. a valve core; 31. a second seal ring; 32. a first annular gap; 33. a second limit groove;
4. a spring;
5. a dust cap.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1 to 3, the exhaust valve for the tractor hydraulic system of the embodiment includes a joint, a valve core 3 and a spring 4, an air inlet channel 11, an installation cavity 12 and an air outlet channel 21 which are sequentially communicated are formed in the joint, and the valve core 3 is movably assembled in the installation cavity 12 of the joint; a first sealing ring 17 is arranged on the inner side wall of the mounting cavity 12 and close to the air outlet channel 21, one end of the spring 4 is connected with the valve core 3, and the other end of the spring is connected with the inner side wall of the mounting cavity 12 and close to the air outlet channel 21; one end of the valve core 3 is in sealing contact with the first sealing ring 17 to realize the plugging of the air outlet channel 21, and the other end of the valve core 3 is in contact with one end of the air inlet channel 11.
As shown in fig. 1 to 3, a first annular notch 32 is disposed on a peripheral side of one end of the valve element 3 according to this embodiment, and the valve element 3 is abutted with the first sealing ring 17 through the first annular notch 32 to seal the air outlet channel 21. Through setting up first annular breach, be favorable to with the sealed butt of first sealing washer adaptation, the oil pressure that utilizes fluid blocks up the passageway that produces oil.
As shown in fig. 1 to 3, a second sealing ring 31 is disposed at the other end of the valve element 3 according to the present embodiment, and the other end of the valve element 3 is in sealing contact with the inner side wall of the mounting cavity 12 through the second sealing ring 31 to seal the air inlet passage 11. Through setting up the second sealing washer, when not having gaseous in the pipeline, can block up air inlet passage.
As shown in fig. 1 to fig. 3, in the present embodiment, an inner diameter of the installation cavity 12 is greater than an inner diameter of the air inlet passage 11, a sealing step 18 is formed between the installation cavity 12 and the air inlet passage 11, and a sealing inclined surface adapted to the second sealing ring 31 is disposed at an inner ring edge of the sealing step 18. The sealing inclined plane is utilized, so that the sealing device is beneficial to being matched with the second sealing ring, and the sealing effect is better.
As shown in fig. 1 to 3, a second annular notch is provided on the other end of the valve core 3, and the second seal ring 31 is fitted in the second annular notch. Through setting up second annular breach, can assemble the second sealing washer in second annular breach, seal structure is compact stable.
As shown in fig. 1 to fig. 3, a first limiting groove 14 is disposed on a position of an inner side wall of the installation cavity 12, which is close to the air outlet channel 21, a second limiting groove 33 is disposed at one end of the valve element 3, one end of the spring 4 is connected to the second limiting groove 33, and the other end of the spring 4 is connected to the first limiting groove 14. The two ends of the spring are respectively connected in the limiting grooves, so that the dislocation of the spring is avoided, and the structure is compact and stable.
As shown in fig. 1 to 3, in the present embodiment, the inner diameter of the mounting cavity 12 is larger than the inner diameter of the air outlet passage 21, and the first seal ring 17 is disposed on the peripheral side of the spring 4. The inner diameter of the mounting cavity is larger than that of the air outlet channel, so that stable assembly of the valve core is facilitated.
As shown in fig. 1 to 3, the joint of the present embodiment includes a first joint 1 and a second joint 2 which are coaxially arranged, the air inlet channel 11 and the installation cavity 12 are disposed in the first joint 1, the air outlet channel 21 is disposed in the second joint 2, and one end of the second joint 2 is screwed on an outer side wall of the installation cavity of the first joint 1; the outer side wall of the air inlet channel 11 of the first joint 1 is provided with an external thread 15 and a third sealing ring 13, and the outer side wall of the first joint 1 is also provided with a flange 16. The first joint and the second joint are matched, so that the valve core is convenient to assemble; the first joint may be fitted to the hydraulic line through a flange of an outer side wall of the first joint and sealed by a third packing.
As shown in fig. 1 to fig. 3, in the present embodiment, the side wall of the air outlet channel 21 is provided with an exhaust hole 22, one end of the air outlet channel 21, which is far away from the air inlet channel 11, is provided with a dust cap 5, and the dust cap 5 covers the end of the air outlet channel 21 and is arranged opposite to the exhaust hole 22 at an interval. Through setting up dustproof cap, can play dustproof effect. Specifically, the dust cap 5 can be screwed on the outer side wall of the free end of the second connector, so that dust is prevented from blocking the exhaust hole and water is prevented from entering the air outlet channel.
When the exhaust valve for the tractor hydraulic system of the embodiment is in an initial state, the second connector 2 is connected with the valve body or the pipeline and is in sealing connection with the valve body or the pipeline through the third sealing ring 13, and the assembling position is located at the highest position of the hydraulic system or a position where air is easy to accumulate. The valve core 3 presses the valve core 3 on the sealing step 18 of the mounting cavity 12 through the second sealing ring 31 under the action of the spring 4, so that the sealing effect is achieved, the set opening pressure of the spring is 0.05bar, and when the gas pressure reaches the set opening pressure, the valve core 3 can be opened. When the exhaust valve for the tractor hydraulic system is in an exhaust state, when gas in the hydraulic system is exhausted, the gas overcomes the acting force of the spring 4, the valve core 3 moves upwards, the gas is exhausted along the matching gap between the valve core 3 and the mounting cavity 12, and then the gas is exhausted to the atmosphere along the gas outlet channel 21 and the exhaust hole 22. When tractor is discharge valve for hydraulic system is closed, after the gas discharge, the pressure of fluid rises, and this pressure more than or equal to 0.5bar can make case 3 up move, makes case 3 compress tightly first sealing washer 17, and the pressure is big more, presses more tightly, and fluid also can not spill.
The discharge valve of this embodiment, set up the case through the activity in the installation cavity, when there is gas in the pipeline, because gas pressure can not be very big, gas can make the case open inlet channel, and the extrusion spring, gas can be through the automatic discharge in clearance of case with the installation cavity inside wall, gas discharge back, the case is automatic to fall back under the spring action, under the effect of oil pressure, the one end and the sealed butt of first sealing washer of case are in order to plug the passageway of giving vent to anger up, discharge valve self-closing, can satisfy the exhaust requirement, still avoid fluid to leak, and is convenient and fast.
Example 2
The tractor of this embodiment includes above-mentioned tractor exhaust valve for hydraulic system.
The tractor of this embodiment sets up discharge valve through the hydraulic system at the tractor, can be with gaseous automatic discharge, and under the oil pressure effect, valve self-closing behind the gaseous discharge. Therefore, the use requirement can be met, and the operation is convenient and quick.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (8)
1. The exhaust valve for the tractor hydraulic system is characterized by comprising a joint, a valve core and a spring, wherein an air inlet channel, an installation cavity and an air outlet channel which are sequentially communicated are formed in the joint; a first sealing ring is arranged on the inner side wall of the mounting cavity and close to the air outlet channel, one end of the spring is connected with the valve core, and the other end of the spring is connected with the inner side wall of the mounting cavity and close to the air outlet channel; one end of the valve core is in sealing and abutting joint with the first sealing ring to realize the plugging of the air outlet channel, and the other end of the valve core is in abutting joint with one end of the air inlet channel; the other end of the valve core is provided with a second sealing ring, and the other end of the valve core is in sealing butt joint with the inner side wall of the installation cavity through the second sealing ring to realize the sealing of the air inlet channel; the inner diameter of the mounting cavity is larger than that of the air inlet channel, a sealing step is formed between the mounting cavity and the air inlet channel, and a sealing inclined surface matched with the second sealing ring is arranged at the edge position of an inner ring of the sealing step.
2. The exhaust valve for the tractor hydraulic system according to claim 1, wherein a first annular notch is formed in the peripheral side of one end of the valve core, and the valve core is in adaptive abutting joint with the first sealing ring through the first annular notch to achieve sealing of the air outlet channel.
3. The exhaust valve for the tractor hydraulic system according to claim 1, wherein a second annular notch is formed in the other end of the valve core on the periphery side, and the second seal ring is fitted in the second annular notch.
4. The exhaust valve for the tractor hydraulic system according to claim 1, wherein a first limiting groove is formed in a position, close to the air outlet channel, of the inner side wall of the installation cavity, a second limiting groove is formed in one end of the valve element, one end of the spring is connected to the second limiting groove, and the other end of the spring is connected to the first limiting groove.
5. The exhaust valve for the tractor hydraulic system according to claim 1, wherein an inner diameter of the installation cavity is larger than an inner diameter of the air outlet passage, and the first seal ring is disposed on a peripheral side of the spring.
6. The exhaust valve for the tractor hydraulic system according to claim 1, wherein the joint comprises a first joint and a second joint which are coaxially arranged, the air inlet channel and the mounting cavity are arranged in the first joint, the air outlet channel is arranged in the second joint, and one end of the second joint is in threaded connection with the outer side wall of the mounting cavity of the first joint; and the outer side wall of the air inlet channel of the first joint is provided with an external thread and a third sealing ring, and the outer side wall of the first joint is also provided with a flange edge.
7. The exhaust valve for the tractor hydraulic system according to claim 1, wherein an exhaust hole is formed in a side wall of the air outlet channel, a dust cap is arranged at one end of the air outlet channel, which is far away from the air inlet channel, and the dust cap is arranged at the end of the air outlet channel and is opposite to the exhaust hole at an interval.
8. A tractor comprising an exhaust valve for a tractor hydraulic system according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221175659.7U CN217207925U (en) | 2022-05-17 | 2022-05-17 | Exhaust valve for tractor hydraulic system and tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221175659.7U CN217207925U (en) | 2022-05-17 | 2022-05-17 | Exhaust valve for tractor hydraulic system and tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217207925U true CN217207925U (en) | 2022-08-16 |
Family
ID=82780456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221175659.7U Active CN217207925U (en) | 2022-05-17 | 2022-05-17 | Exhaust valve for tractor hydraulic system and tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217207925U (en) |
-
2022
- 2022-05-17 CN CN202221175659.7U patent/CN217207925U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai Lovol Intelligent Agricultural Technology Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Weichai leiwo Heavy Industry Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |