CN2854229Y - Sealing device - Google Patents
Sealing device Download PDFInfo
- Publication number
- CN2854229Y CN2854229Y CN 200520129384 CN200520129384U CN2854229Y CN 2854229 Y CN2854229 Y CN 2854229Y CN 200520129384 CN200520129384 CN 200520129384 CN 200520129384 U CN200520129384 U CN 200520129384U CN 2854229 Y CN2854229 Y CN 2854229Y
- Authority
- CN
- China
- Prior art keywords
- guide holder
- hole
- oil sealing
- small end
- face
- 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 - Fee Related
Links
Abstract
A new type sealing device comprises an oil tight (3), a resilience device (4), a guide holder (7) and a hold-down plate(6). One coniform hole is arranged in the middle of the guide holder (7). The guide holder (7) coniform hole is provided with a coniform oil tight (3). Small end diameter of the guide holder (7) coniform hole is larger than that of the small circular hole on the left and smaller than small end diameter of the oil tight (3). A space shall be left between the oil tight (3) small end face and the coniform hole small end face. the resilience device (4) is composed of two gaskets (5) and an elastic ring (10) between the gaskets (5). A hold-down plate (6) is connected to a cylinder barrel (1) tightly. After complete compression of the resilience device (4), its thickness shall not be smaller than the height of a big circular hole on the right of the guide holder (7). Due to the contact between a taper hole bevel and the oil tight (3), the sealing of the oil tight and a piston rod realized through the resilience of the resilience device can not only keep fine sealing performance but also prolong the service life of the oil tight.
Description
Technical field
The utility model relates to a kind of seal arrangement, especially a kind of seal arrangement that is used for piston rod.
Background technique
At present, sealing device structure form in the mechanical device is a lot, in the seal arrangement of piston rod, generally all use oil sealing to seal, in this device because the motion of piston rod, oil sealing is subjected to axially and the effect of radial force, and the oil sealing sealing face can produce wearing and tearing, causes the oil sealing sealing reduction, even the oil sealing that the high wear resistance material is made, behind the work certain hour, oil sealing can wear and tear too, and oil sealing sealing also can descend, not only increase maintenance cost, influence manufacturing efficiency, and can cause equipment precision to descend, influence product processing quality.
Technology contents
Descend at oil sealing sealing on the piston rod seal in the above-mentioned prior art, increase cost, influence manufacturing efficiency, reduce the problem of product processing quality, the utility model provides the new type sealing device of a kind of compact structure, good seal performance, long service life.
The purpose of this utility model is to realize like this, it comprises oil sealing, Billiard apparatus, guide holder, pressing plate, its structural feature is: described guide holder is the cylinder stepped shaft, the middle part has a round taper hole in the guide holder, end respectively has a circular hole that varies in size about in the guide holder, the big end of guide holder round taper hole links to each other with its right side big hole, the round taper hole small end links to each other with its left side small sircle hole, two external cylindrical surfaces of described guide holder and cylinder barrel endoporus are very little being slidingly matched in gap, described Billiard apparatus is made up of pad and the elastic ring between pad, described Billiard apparatus is positioned at guide holder right side big hole, its left pad contacts with oil sealing, right pad contacts with pressing plate, its pressing plate links to each other with cylinder barrel is fastening, be fitted with conical oil sealing in the described guide holder round taper hole, its guide holder round taper hole end diameter is greater than its left side small sircle hole diameter, less than the oil sealing end diameter, make between oil sealing small end face and the conical bore small end face and leave the gap, after described Billiard apparatus all compresses, its thickness is not less than guide holder right side big hole height, and the left pad external diameter on the described Billiard apparatus is less than the oil sealing Outside diameter.
Circular hole is provided with dust ring in the pressing plate, on pressing plate, also be provided with and be used for hexagon ring fastening and the unlatching pressing plate, guide holder left side small sircle hole and piston rod fitting surface are provided with the O RunddichtringO, and the gap between oil sealing small end face and the guide holder conical bore small end face is not less than 1 millimeter.
The utility model working principle is: after piston rod work, oil sealing is at it axially and under the effect of radial force, its oil sealing sealing face can wear and tear, the sealing surface gap increases, and at this moment, oil sealing is under the effect of the elasticity tension of Billiard apparatus, oil sealing can move automatically to the left, oil sealing is subjected to the extruding on guide holder circular cone inclined-plane, and oil sealing and rod seal face are close to all the time, thereby keeps the sealing surface sealing.
Seal arrangement described in the utility model, since gapped between guide holder conical bore small end face and the oil sealing small end face, under the elasticity tension effect of Billiard apparatus, can make the sealing all the time between oil sealing and the piston rod, not only can keep the good sealability of oil sealing, and the working life of having improved oil sealing greatly, its compact structure is simple, and process unit is convenient, not being only applicable to the standard piston bar uses, as long as the appropriate change piston size can also be used for non-standard piston rod and use, its applicability is strong.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Cylinder barrel 2, O type circle 3, oil sealing 4, Billiard apparatus 5, pad 6, pressing plate 7, guide holder 8, piston rod 9, dust ring 10, elastic ring in the drawings, 1,
Embodiment
In Fig. 1, this new type sealing device it by oil sealing 3, Billiard apparatus 4, guide holder 7, cylinder barrel 1, piston rod 8, dust ring 9, O shape circle 2, pressing plate 6 is formed, described guide holder 7 is the cylinder stepped shaft, the middle part is provided with a round taper hole in the guide holder 7, end respectively has a circular hole that varies in size about in the guide holder 7, the big end of described guide holder 7 round taper holes links to each other with its right side big hole, the round taper hole small end links to each other with its left side small sircle hole, it is being slidingly matched of 0.05-0.10 millimeter that two external cylindrical surfaces of described guide holder 7 and cylinder barrel 1 endoporus are the gap, be fitted with conical oil sealing 3 in described guide holder 7 round taper holes, its guide holder 7 round taper hole end diameters are greater than 4 millimeters of its left side small sircle hole diameters, less than 5 millimeters of oil sealing 3 end diameters, make between oil sealing 3 small end faces and the guide holder 7 conical bore small end faces and leave the 1-3 mm clearance, described Billiard apparatus 4 is made up of two pads 5 and the elastic ring between pad 5 10, its pad 5 is provided with the shape annular groove identical with size, elastic ring 10 is inserted in its groove, left pad 5 external diameters on the Billiard apparatus 4 are less than oil sealing 3 Outside diameters, described Billiard apparatus 4 is positioned at guide holder 7 right side big holes, its left pad 5 contacts with oil sealing 3, right pad 5 contacts with pressing plate 6, pressing plate 6 links to each other with cylinder barrel 1 usefulness screw threads for fastening, after described Billiard apparatus 4 elastic rings 10 all compress, its total thickness is not less than guide holder 7 right side big hole height, circular hole is provided with dust ring 9 in the pressing plate 6, also be provided with on pressing plate 6 and be used for fastening and open the hexagon ring of pressing plate, guide holder 7 left side small sircle holes and piston rod 8 fitting surfaces are provided with O RunddichtringO 2.
Claims (3)
1, a kind of new type sealing device, it comprises oil sealing (3), Billiard apparatus (4), pressing plate (6) guide holder (7), described guide holder (7) is the cylinder stepped shaft, the middle part is provided with a round taper hole in the guide holder (7), end respectively has a circular hole that varies in size about in the guide holder (7), the big end of guide holder (7) round taper hole links to each other with its right side big hole, the round taper hole small end links to each other with its left side small sircle hole, two external cylindrical surfaces of described guide holder (7) and cylinder barrel (1) endoporus are very little being slidingly matched in gap, described Billiard apparatus (4) is made up of pad (5) and the elastic ring (10) that is positioned between the pad (5), described Billiard apparatus (4) is positioned at guide holder (7) right side big hole, its left pad (5) contacts with oil sealing (3), right pad (5) contacts with pressing plate (6), described pressing plate (6) and fastening linking to each other of cylinder barrel (1), it is characterized in that: be fitted with conical oil sealing (3) in described guide holder (7) round taper hole, its guide holder (7) round taper hole end diameter is greater than its left side small sircle hole diameter, less than oil sealing (3) end diameter, make between oil sealing (3) small end face and guide holder (7) the conical bore small end face and leave the gap, after described Billiard apparatus (4) all compresses, its thickness is not less than guide holder (7) right side big hole height, and left pad (5) external diameter of described Billiard apparatus (4) is less than oil sealing (3) Outside diameter.
2, a kind of new type sealing device according to claim 1 is characterized in that: the gap between oil sealing (3) small end face and guide holder (7) the conical bore small end face is not less than 1 millimeter.
3, a kind of new type sealing device according to claim 1 is characterized in that: the elastic ring (10) on the described Billiard apparatus (4) can also be other spring of rubber-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129384 CN2854229Y (en) | 2005-11-21 | 2005-11-21 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129384 CN2854229Y (en) | 2005-11-21 | 2005-11-21 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2854229Y true CN2854229Y (en) | 2007-01-03 |
Family
ID=37580861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520129384 Expired - Fee Related CN2854229Y (en) | 2005-11-21 | 2005-11-21 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2854229Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362782A (en) * | 2013-08-07 | 2013-10-23 | 四川金星压缩机制造有限公司 | Compressor static sealing device |
| CN104047640A (en) * | 2014-06-10 | 2014-09-17 | 清华大学 | Brush type sealing structure with adjustable radial clearance |
| CN104653783A (en) * | 2013-11-21 | 2015-05-27 | 刘玉玺 | Follow-up sealing device of shaft |
-
2005
- 2005-11-21 CN CN 200520129384 patent/CN2854229Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362782A (en) * | 2013-08-07 | 2013-10-23 | 四川金星压缩机制造有限公司 | Compressor static sealing device |
| CN104653783A (en) * | 2013-11-21 | 2015-05-27 | 刘玉玺 | Follow-up sealing device of shaft |
| CN104047640A (en) * | 2014-06-10 | 2014-09-17 | 清华大学 | Brush type sealing structure with adjustable radial clearance |
| CN104047640B (en) * | 2014-06-10 | 2015-11-18 | 清华大学 | A kind of brush seal structure of adjustable radial gap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |