CN202091579U - O-shaped sealing device used on tamping rod sleeve of tamping pick - Google Patents
O-shaped sealing device used on tamping rod sleeve of tamping pick Download PDFInfo
- Publication number
- CN202091579U CN202091579U CN2011202003684U CN201120200368U CN202091579U CN 202091579 U CN202091579 U CN 202091579U CN 2011202003684 U CN2011202003684 U CN 2011202003684U CN 201120200368 U CN201120200368 U CN 201120200368U CN 202091579 U CN202091579 U CN 202091579U
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- CN
- China
- Prior art keywords
- rod sleeve
- tamping
- tamping rod
- seal ring
- shaped seal
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses an O-shaped sealing device used on a tamping rod sleeve of a tamping pick, a circular groove with the diameter and the profile consistent with those of an O-shaped seal ring is arranged in the position of an oil outlet hole at the outer side of the tamping rod sleeve, the O-shaped seal ring is arranged in the circular groove and the section of the O-shaped seal ring is circular. In working, after the pressure on the inner side of the tamping rod sleeve rises, oil drainage and pressure reduction can be performed through the oil outlet hole in the tamping rod sleeve, and the O-shaped seal ring on the outer side of the oil outlet hole of the tamping rod sleeve extends under internal pressure for pressure relief; when vacuum is formed at the inner side of the tamping rod sleeve, the O-shaped seal ring can contract to the direction of the inner side of the tamping rod sleeve, thereby realizing better sealing property, avoiding sucking oil and playing a role of a one-way valve.
Description
Technical field
The utility model relates to a kind of seal arrangement, relates in particular to a kind of O type seal arrangement that the tamping pickaxe stamp stem puts that is used for one-way valve type function.
Background technique
The O RunddichtringO is the belt rubber seal with circular cross-section, is mainly used in mechanical part prevents the liquids and gases medium under static conditions leakage.In some cases, the O RunddichtringO can also be used as the dynamic sealing element of axially reciprocating and low-speed rotation.To variety classes fixing seal or motive sealing application, the O RunddichtringO is to become a kind of not only effective but also economic seal element.
The at present domestic motion state that is sealed in is mainly by oil sealing, and state of rest mainly squeezes the space by O type circle, thereby avoids revealing.But these technology all can't satisfy the requirement of one-way sealing.Promptly can't satisfy can only be to the oil pocket oil extraction, and can not be from the usage requirement of oil pocket oil suction.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, one-way sealing property is good is used for the O type seal arrangement that the tamping pickaxe stamp stem puts.
The purpose of this utility model is achieved through the following technical solutions, and a circle groove consistent with diameter, the profile of O RunddichtringO is set in the oil outlet position in the stamp stem cover outside, and the O RunddichtringO is packed in the round groove, and described O RunddichtringO cross section is a circle.
During work, after stamp stem overlaps inboard pressure rises, can carry out oil extraction, decompression by the oil outlet that stamp stem puts, this moment, the O RunddichtringO in the stamp stem cover oil outlet outside extended pressure release under internal pressure; When stamp stem cover inboard formed vacuum, the O RunddichtringO can shrink by side direction in the stamp stem cover, and was better to seal, and avoids suction oil, thereby played the effect of one-way valve.
The beneficial effects of the utility model: by extract oil-hole location at stamp stem round groove is set, and the O RunddichtringO of in the circle groove, packing into, utilize stamp stem to overlap inside and outside draught head, realize from the oil outlet oil extraction, and avoid sucking oily purpose to have the effect of one-way valve.
Description of drawings
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing
Fig. 1 is a sectional view of the present utility model
Among the figure: 1, stamp stem cover 2, oil outlet 3, O RunddichtringO 4, circle groove
Embodiment
As shown in Figure 1, a circle groove 4 consistent with diameter, the profile of O RunddichtringO 3 is set in oil outlet 2 positions in the stamp stem cover outside, O RunddichtringO 3 is packed in the round groove 4, and O RunddichtringO 3 cross sections are circle.
During work, after stamp stem overlaps inboard pressure rises, can carry out oil extraction, decompression by the oil outlet 2 that stamp stem puts, this moment, the O RunddichtringO 3 in stamp stem cover oil outlet 2 outsides extended pressure release under internal pressure; When the inboard formation of stamp stem cover vacuum, O RunddichtringO 3 can shrink by side direction in the stamp stem cover, and is better to seal, and avoids suction oil, thereby played the effect of one-way valve.
Claims (1)
1. one kind is used for the O type seal arrangement that the tamping pickaxe stamp stem puts, it is characterized in that at the oil outlet position setting in a stamp stem cover outside circle groove consistent with diameter, the profile of O RunddichtringO, the O RunddichtringO is packed in the round groove, and described O RunddichtringO cross section is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202003684U CN202091579U (en) | 2011-06-07 | 2011-06-07 | O-shaped sealing device used on tamping rod sleeve of tamping pick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202003684U CN202091579U (en) | 2011-06-07 | 2011-06-07 | O-shaped sealing device used on tamping rod sleeve of tamping pick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091579U true CN202091579U (en) | 2011-12-28 |
Family
ID=45366647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202003684U Expired - Lifetime CN202091579U (en) | 2011-06-07 | 2011-06-07 | O-shaped sealing device used on tamping rod sleeve of tamping pick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091579U (en) |
-
2011
- 2011-06-07 CN CN2011202003684U patent/CN202091579U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |