CN203604299U - Valve sealing structure for harvester - Google Patents
Valve sealing structure for harvester Download PDFInfo
- Publication number
- CN203604299U CN203604299U CN201320742268.3U CN201320742268U CN203604299U CN 203604299 U CN203604299 U CN 203604299U CN 201320742268 U CN201320742268 U CN 201320742268U CN 203604299 U CN203604299 U CN 203604299U
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- CN
- China
- Prior art keywords
- sealing plate
- seal ring
- valve
- valve core
- housing
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a valve structure, in particular to a valve sealing structure for a harvester. The valve sealing structure for the harvester comprises a shell and a valve core arranged in the shell, a part of the valve core is located in the shell, a part of the valve core stretches out of the shell, the stretching-out part of the valve core is sleeved with a sealing plate and is fixed to the outer wall of the shell, a first sealing ring is arranged between the sealing plate and the shell, a second sealing ring is arranged between the sealing plate and the valve core, the second sealing ring comprises an embedding part arranged between the sealing plate and the valve core and an extending part extending out of the sealing plate from the embedding part, and the extending part extends by fitting the valve core. According to the valve sealing structure for the harvester, dust and impurities are not prone to entering the space between the sealing plate and the valve core and are blocked outside, after the dust and the impurities adhere to the valve core, external air flow or vibration of equipment can enable the dust and the impurities to be separated from the valve core, normal and accurate motions of the valve core are guaranteed, and the service life of the valve body is prolonged.
Description
Technical field
The utility model relates to a kind of valve mechanism, especially a kind of reaper valve seal structure.
Background technique
In hydraulic control system on reaper, generally all with a change-over valve, hydraulic system is controlled, realize the break-make of oil hydraulic circuit by the high-frequency reciprocating activity of spool, as shown in Figure 1, existing reaper generally comprises housing 1 and is located at the spool 2 in housing 1 with valve, spool 2 is controlled carries out reciprocal activity, because spool 2 parts are positioned at housing 1 inside, a part stretches out in housing 1 outside, and in order to be conducive to the high-frequency reciprocating motion of spool 2, generally in housing 1, be marked with lubricant oil, in order to prevent outflow of lubrication oil, generally on the extension of spool 2, be socketed a sealing plate 3 and be fixed on the outer wall of housing 1, the first seal ring 4 is set between sealing plate 3 and housing 1, the second seal ring 5 is set between sealing plate 3 and spool 2, to guarantee sealing, prevent oil impregnate.
But because reaper is in the time working, dust and impurity are more, dust and impurity easily enter between spool 2 and the second seal ring 5, and the clamping stagnation that causes spool 2 to move not only affects its normal accuracy of working, and easily damage valve body, reduce the working life of valve body.
Model utility content
The utility model provides a kind of reaper valve seal structure of protecting reaper valve normally to work, increase the service life.
To achieve these goals, the utility model adopts following technological scheme:
It comprises a housing and is located at the spool in housing, a spool part is positioned at enclosure interior, a part stretches out in outside, on the extension of spool, be socketed a sealing plate and be fixed on the outer wall of housing, the first seal ring is set between sealing plate and housing, the second seal ring is set between sealing plate and spool, its improvement is: the second described seal ring comprise the Embedded Division be located between sealing plate and spool and by Embedded Division the extension part to sealing plate extension, described extension part laminating spool extends.
Preferably, the Embedded Division cross section of the second described seal ring is L shaped.
Preferably, the extension part cross section of the second described seal ring is triangle.
Preferably, between described sealing plate and housing, be also provided with the 3rd seal ring.
Preferably, the 3rd described seal ring is positioned at outside the first seal ring.
Preferably, the first described seal ring is installed in the first mounting groove on housing.
Preferably, the second described seal ring is installed in the second mounting groove on housing.
Preferably, the 3rd described seal ring is installed in the 3rd mounting groove on housing.
Preferably, the 3rd described mounting groove cross section is L shaped.
Owing to having adopted said structure, reaper of the present utility model by valve seal structure by arranging to the extension part of sealing plate extension at the second seal ring, make dust and impurity be difficult for entering between sealing plate and spool, kept off in outside, after dust and impurity adhere to, due to still in space outerpace, outside air-flow or the vibrations of equipment can make it depart from spool, thereby guarantee that spool is normal accurate movable, also avoided blocking because of activity the damage causing, extended the working life of valve body simultaneously.
Accompanying drawing explanation
Fig. 1 is existing reaper valve arrangement schematic diagram;
Fig. 2 is the utility model embodiment's structural representation.
In figure:
Housing 1;
Spool 2;
Sealing plate 3;
The first seal ring 4;
The second seal ring 5, Embedded Division 51, extension part 52;
The 3rd seal ring 6;
The first mounting groove 7;
The second mounting groove 8;
The 3rd mounting groove 9.
embodiment
As shown in Figure 2, the reaper of the present embodiment comprises that by valve seal structure a housing 1 is located at the spool 2 in housing 1, spool 2 is controlled carries out reciprocal activity, spool 2 parts are positioned at housing 1 inside, a part stretches out in housing 1 outside, on the extension of spool 2, be socketed a sealing plate 3 and be fixed on the outer wall of housing 1, the first seal ring 4 is set between sealing plate 3 and housing 1, the second seal ring 5 is set between sealing plate 3 and spool 2, the second described seal ring 5 comprises the Embedded Division 51 be located between sealing plate 3 and spool 2 and the extension part 52 to sealing plate extension by Embedded Division 51, in order to guarantee good sealing effect, described extension part 52 spool 2 of fitting extends.
In the present embodiment, for the stable degree that guarantees that the second seal ring is installed, avoid it in the high-frequency reciprocating activity of spool, to be subjected to displacement, thereby affect sealing, so the Embedded Division cross section of the second described seal ring 5 is L shaped.By the second seal ring 5 be set to L shaped after,, assign to carry out position by vertical component effect and fix carrying out sealing between spool 2 and sealing plate 3 and dustproof by horizontal component, guarantee stability when it uses.
In order to reduce extension part 52 and external surface of contact, reduce adhering to of dust and impurity, in the present embodiment, extension part 52 cross sections of the second described seal ring 5 are triangle.
In the use of existing product, only carry out shell 1 and the sealing of sealing plate 3 and still have the phenomenon of oil impregnate by the first seal ring, for head it off, in the present embodiment, between described sealing plate 3 and housing 1, be also provided with the 3rd seal ring 6.
Concrete, the 3rd described seal ring is positioned at outside the first seal ring.
In the present embodiment, the first described seal ring 4 is installed in the first mounting groove 7 on housing.
In the present embodiment, the second described seal ring 5 is installed in the second mounting groove 8 on housing.
In the present embodiment, the 3rd described seal ring 6 is installed in the 3rd mounting groove 9 on housing.
Because the second seal ring 5 cross sections are L shaped, so corresponding, the second described mounting groove cross section is L shaped.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. reaper valve seal structure, comprise a housing and be located at the spool in housing, a spool part is positioned at enclosure interior, a part stretches out in outside, on the extension of spool, be socketed a sealing plate and be fixed on the outer wall of housing, the first seal ring is set between sealing plate and housing, the second seal ring is set between sealing plate and spool, it is characterized in that: the second described seal ring comprise the Embedded Division be located between sealing plate and spool and by Embedded Division the extension part to sealing plate extension, described extension part laminating spool extends.
2. reaper as claimed in claim 1 valve seal structure, is characterized in that: the Embedded Division cross section of the second described seal ring is L shaped.
3. reaper as claimed in claim 2 valve seal structure, is characterized in that: the extension part cross section of the second described seal ring is triangle.
4. reaper as claimed in claim 3 valve seal structure, is characterized in that: between described sealing plate and housing, be also provided with the 3rd seal ring.
5. reaper as claimed in claim 4 valve seal structure, is characterized in that: the 3rd described seal ring is positioned at outside the first seal ring.
6. reaper as claimed in claim 5 valve seal structure, is characterized in that: the first described seal ring is installed in the first mounting groove on housing.
7. reaper as claimed in claim 6 valve seal structure, is characterized in that: the second described seal ring is installed in the second mounting groove on housing.
8. reaper as claimed in claim 7 valve seal structure, is characterized in that: the 3rd described seal ring is installed in the 3rd mounting groove on housing.
9. reaper as claimed in claim 8 valve seal structure, is characterized in that: the 3rd described mounting groove cross section is L shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742268.3U CN203604299U (en) | 2013-11-22 | 2013-11-22 | Valve sealing structure for harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742268.3U CN203604299U (en) | 2013-11-22 | 2013-11-22 | Valve sealing structure for harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604299U true CN203604299U (en) | 2014-05-21 |
Family
ID=50716976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320742268.3U Expired - Fee Related CN203604299U (en) | 2013-11-22 | 2013-11-22 | Valve sealing structure for harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203604299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042119A (en) * | 2015-06-26 | 2015-11-11 | 合肥工业大学 | Slicing-type manual multi-way reversal valve |
-
2013
- 2013-11-22 CN CN201320742268.3U patent/CN203604299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042119A (en) * | 2015-06-26 | 2015-11-11 | 合肥工业大学 | Slicing-type manual multi-way reversal valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20151122 |
|
| EXPY | Termination of patent right or utility model |