CN204299878U - The shaft seal of helical-lobe compressor - Google Patents
The shaft seal of helical-lobe compressor Download PDFInfo
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- CN204299878U CN204299878U CN201420744555.2U CN201420744555U CN204299878U CN 204299878 U CN204299878 U CN 204299878U CN 201420744555 U CN201420744555 U CN 201420744555U CN 204299878 U CN204299878 U CN 204299878U
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- axle sleeve
- helical
- seal
- lobe compressor
- lip seal
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Abstract
A shaft seal for helical-lobe compressor, belongs to the attachment technique field of helical-lobe compressor.Described helical-lobe compressor comprises the rotor shaft of compressor active screw rod and is located at the capping of compression case end of body, described shaft seal comprises axle sleeve and lip seal, it is characterized in that: described axle sleeve adopts the engineering plastics with self-lubricating property to make ring-type, this axle sleeve is set in that overhanging section of rotor shaft upper and both structures are drive fit, makes axle sleeve can follow rotor shaft synchronous axial system; Described lip seal to be embedded in capping and to be set on described axle sleeve, and between this lip seal and the outer surface of described axle sleeve, structure coordinates for contacting.Efficiently reduce the surface friction drag between axle sleeve and lip seal, reduce wearing and tearing between the two, extend mechanical working life, with the reliability of lift-bolt compressor operating, can sealability be guaranteed simultaneously.
Description
Technical field
The utility model belongs to the attachment technique field of helical-lobe compressor, is specifically related to a kind of shaft seal of helical-lobe compressor.
Background technique
Helical-lobe compressor has compact structure, few easy workout part, and convenient operation is safeguarded, dynamical balancing is excellent, can the series of advantages such as gas-liquid or gas-solid multi-phase mixed delivering, has been widely used in commercialization, industrial water unit, heat pump and refrigeration and cold storage field at present.
In oil free screw compressor, compression process is carried out in the environment of a complete oil-free, and this just requires to arrange reliable shaft seal between the lubrication district and gas of compressor.Shaft seal not only needs effectively to work under high speed circular movement, and needs certain elasticity, and during to adapt to adopt slide thrust bearing, rotor is issuable moves axially.Have the shaft seal that two kinds different in fuel injection helical lobe compressor, a kind of is the shaft seal of the rotor shaft part be close to compression chamber, and particularly at exhaust end, another kind is the shaft seal of the shaft part stretched out outside compressor head, to separate with air.As can be seen here, operational efficiency and the reliability thereof of helical-lobe compressor is determined to a great extent in the sealability of the bearing in helical-lobe compressor and working life.
The helical-lobe compressor gland seal device that the axle sleeve using metallic material to make for a kind of and lip seal form, compressor active screw rotor is when running up, surface friction drag between axle sleeve and lip seal is comparatively large, easily causes the wearing and tearing of shaft seal, makes compressor occur the phenomenon of leaking.Therefore, the shaft seal improving above-mentioned helical-lobe compressor is further necessary.
Summary of the invention
The purpose of this utility model is the shaft seal that will provide that a kind of friction factor is low, wear-resisting property is excellent and be imbued with the helical-lobe compressor of self lubricity, its good seal performance, long service life, can the reliability of lift-bolt compressor operating further.
The purpose of this utility model reaches like this, a kind of shaft seal of helical-lobe compressor, described helical-lobe compressor comprises the rotor shaft of compressor active screw rod and is located at the capping of compression case end of body, described shaft seal comprises axle sleeve and lip seal, it is characterized in that: described axle sleeve adopts the engineering plastics with self-lubricating property to make ring-type, this axle sleeve is set in that overhanging section of rotor shaft upper and both structures are drive fit, makes axle sleeve can follow rotor shaft synchronous axial system; Described lip seal to be embedded in capping and to be set on described axle sleeve, and between this lip seal and the outer surface of described axle sleeve, structure coordinates for contacting.
In a specific embodiment of the present utility model, the quantity of described lip seal is one or more.
In another specific embodiment of the present utility model, the axis of described axle sleeve and the dead in line of described lip seal.
In another specific embodiment of the present utility model, described contact coordinates for rolling type frictional fit.
In another specific embodiment of the present utility model, described axle sleeve adopts the engineering plastics with self-lubricating property to be polyether-ether-ketone (PEEK), teflon (PTEE), polyoxymethylene (POM) or polyamide (PA).
The utility model is due to after employing said structure, the beneficial effect had: because axle sleeve adopts the engineering material with self-lubricating property to make, thus the surface friction drag between axle sleeve and lip seal is efficiently reduced, reduce wearing and tearing between the two, extend mechanical working life, with the reliability of lift-bolt compressor operating, sealability can be guaranteed simultaneously.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
In figure: 1. rotor shaft; 2. axle sleeve; 3. lip-type seal; 4. capping; 5. compressor housing.
Embodiment
Technical spirit of the present utility model and beneficial effect can be fully understood in order to make the public; claimant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but claimant is not the restriction to technological scheme to the description of embodiment, any changing in the form rather than substance according to the utility model design all should be considered as protection domain of the present utility model.
Refer to Fig. 1, the utility model relates to a kind of shaft seal of helical-lobe compressor, described helical-lobe compressor comprises the rotor shaft 1 of compressor active screw rod and is located at the capping 4 of compressor housing 5 end, described shaft seal comprises axle sleeve 2 and lip seal 3, described axle sleeve 2 adopts the engineering plastics with self-lubricating property to make ring-type, this axle sleeve 2 is set in that overhanging section of rotor shaft 1 upper and both structures are drive fit, makes axle sleeve 2 can follow rotor shaft 1 synchronous axial system; Described lip seal 3 to be embedded in capping 4 and to be set on described axle sleeve 2, between this lip seal 3 and the outer surface of described axle sleeve 2, structure coordinates for contacting, namely axle sleeve 2 does not rotate following lip seal 3 while rotor shaft 1 rotates together, and between the internal surface of just lip seal 3 and the outer surface of axle sleeve 2, structure is rolling type frictional fit.
Further, the quantity of described lip seal 3 is one or more, illustrates one in the present embodiment.
Further, the axis of described axle sleeve 2 and the dead in line of described lip seal 3.
Further, described axle sleeve 2 adopts the material with the engineering plastics of self-lubricating property unrestricted, is preferably polyether-ether-ketone (PEEK), teflon (PTEE), polyoxymethylene (POM) or polyamide (PA) etc. in the present embodiment.
Claims (5)
1.
a kind of shaft seal of helical-lobe compressor, described helical-lobe compressor comprises the rotor shaft (1) of compressor active screw rod and is located at the capping (4) of compressor housing (5) end, described shaft seal comprises axle sleeve (2) and lip seal (3), it is characterized in that: described axle sleeve (2) adopts the engineering plastics with self-lubricating property to make ring-type, this axle sleeve (2) is set in that overhanging section of rotor shaft (1) upper and both structures are drive fit, makes axle sleeve (2) can follow rotor shaft (1) synchronous axial system; Described lip seal (3) to be embedded in capping (4) and to be set on described axle sleeve (2), and between this lip seal (3) and the outer surface of described axle sleeve (2), structure coordinates for contacting.
2.
the shaft seal of helical-lobe compressor according to claim 1, is characterized in that the quantity of described lip seal (3) is for one or more.
3.
the shaft seal of helical-lobe compressor according to claim 1, is characterized in that the axis of described axle sleeve (2) and the dead in line of described lip seal (3).
4.
the shaft seal of helical-lobe compressor according to claim 1, is characterized in that described contact coordinates for rolling type frictional fit.
5.
the shaft seal of helical-lobe compressor according to claim 1, is characterized in that described axle sleeve (2) adopts the engineering plastics with self-lubricating property to be polyether-ether-ketone, teflon, polyoxymethylene or polyamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744555.2U CN204299878U (en) | 2014-12-02 | 2014-12-02 | The shaft seal of helical-lobe compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744555.2U CN204299878U (en) | 2014-12-02 | 2014-12-02 | The shaft seal of helical-lobe compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299878U true CN204299878U (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420744555.2U Active CN204299878U (en) | 2014-12-02 | 2014-12-02 | The shaft seal of helical-lobe compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559188A (en) * | 2017-08-26 | 2018-01-09 | 浙江武义浩达工具制造有限公司 | Screw machine |
-
2014
- 2014-12-02 CN CN201420744555.2U patent/CN204299878U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559188A (en) * | 2017-08-26 | 2018-01-09 | 浙江武义浩达工具制造有限公司 | Screw machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |