CN207687355U - Oil free screw machine combined sealing structure - Google Patents
Oil free screw machine combined sealing structure Download PDFInfo
- Publication number
- CN207687355U CN207687355U CN201721917814.7U CN201721917814U CN207687355U CN 207687355 U CN207687355 U CN 207687355U CN 201721917814 U CN201721917814 U CN 201721917814U CN 207687355 U CN207687355 U CN 207687355U
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- axle sleeve
- sealing
- groove
- sealing axle
- helixseal
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Abstract
The utility model discloses a kind of oil free screw machine combined sealing structures, it includes rotary shaft, the sealing axle sleeve being sheathed in the rotary shaft, shell positioned at rotary shaft periphery, the sealing axle sleeve includes the air channel positioned at the helixseal portion of front end and positioned at helixseal portion rear, the helixseal portion is that the surface of self sealss axle sleeve is recessed inwardly to form groove, the overall structure of groove is helicitic texture, the air channel is the circle groove to be formed that is recessed inwardly from the sealing axle sleeve surface, one spiral sealing ring is installed in the helixseal portion, the shell is located at the periphery of the sealing axle sleeve, it has the venthole communicated with the air channel of the sealing axle sleeve.It is simple in structure, reliability is high, adaptable, at low cost, easy for installation.When rotating at high speed, this structure may be implemented effectively to seal.
Description
Technical field
The utility model is related to sealing structure technical fields, in particular to a kind of oil free screw machine combined sealing structure.
Background technology
Oil free screw machine is widely used in the industrial circles such as weaving, pharmacy as a kind of important industrial general equipment.In the past
Generally use mechanical seal or contact PTFE oil sealing sealings without oil machine, but these sealed prices are high, power consumption is big, and maintenance is not
Just, and contact oil seal is not suitable in high speed rotational operation condition.
In occasions such as weaving, pharmacy, sewage disposals, clean air is needed, this just needs our oil-free secret to seal can
It leans on, energy saving, common contact oil seal is possible to not reach requirement in reliability, be easy to cause oil pocket leakage, makes offer
Air it is not clean enough.
Therefore, it is necessary to provide a kind of oil free screw machine combined sealing structure, the reliability of sealing structure is improved, and is torn open
Dress is convenient, and maintenance is convenient.
Utility model content
For the above-mentioned problems in the prior art, the purpose of this utility model is that：A kind of oil free screw machine is provided
Combined sealing structure improves the reliability of sealing structure, and convenient for disassembly and assembly, and maintenance is convenient.
To achieve the goals above, technical solution used by the utility model is as follows：A kind of oil free screw machine combination is close
Seal structure comprising rotary shaft, the sealing axle sleeve being sheathed in the rotary shaft, the shell positioned at rotary shaft periphery, institute
It includes the air channel positioned at the helixseal portion of front end and positioned at helixseal portion rear, the spiral to state sealing axle sleeve
Sealing is that the surface of self sealss axle sleeve is recessed inwardly to form groove, and the overall structure of groove is helicitic texture, the air channel
For the circle groove to be formed that is recessed inwardly from the sealing axle sleeve surface, one spiral sealing ring of installation in the helixseal portion,
The shell is located at the periphery of the sealing axle sleeve, has the venthole communicated with the air channel of the sealing axle sleeve.
The sealing axle sleeve also have positioned at the air channel rear a pair of of mounting groove, this to before and after mounting groove side by side,
The mounting groove is the circle groove to be formed that is recessed inwardly from the sealing axle sleeve surface, and the oil Screw chiller closes sealing structure
It further include the floating ring being installed in the mounting groove of the sealing axle sleeve.
The sealing axle sleeve also has the labyrinth seal groove positioned at the mounting groove rear, the labyrinth seal groove self sealss
Boss surfaces are recessed inwardly the multiple grooves irregularly arranged to be formed, and a labyrinth seal is equipped in the labyrinth seal groove
Circle.
Compared with the prior art, the beneficial effects of the utility model are：The oil free screw machine combined sealing structure makes close
Sealing property is best, and sealing axle sleeve and shell are that have gap, are not contacted in this way, low in energy consumption, abrasion it is small, sealing device it is reliable
Property it is high.The structure of the utility model can be used for other to the exigent equipment of axle sealing structure.The utility model structure
Simply, reliability is high, adaptable, at low cost, easy for installation.When rotating at high speed, this structure may be implemented effectively to seal.
Description of the drawings
Fig. 1 is the scheme of installation of the utility model oil free screw machine combined sealing structure；
Fig. 2 is the section plan of the sealing axle sleeve of the utility model oil free screw machine combined sealing structure；
Fig. 3 is the dimensional structure diagram of the sealing axle sleeve of oil free screw machine combined sealing structure.
Specific implementation mode
The utility model is further described below with reference to specific embodiment.
As shown in Figure 1 to Figure 2, the utility model is a kind of oil free screw machine combined sealing structure comprising rotary shaft 1,
It is sheathed on the sealing axle sleeve 2 in rotary shaft 1, the shell 3 positioned at 1 periphery of rotary shaft.
As shown in Figure 2 and Figure 3, sealing axle sleeve 2 is round type structure, includes positioned at the helixseal portion 21 of front end, spiral
Sealing 21 is that the surface of self sealss axle sleeve 2 is recessed inwardly to form groove, and the overall structure of groove is helicitic texture.Sealing axle sleeve
2 also there is the air channel 22 positioned at 21 rear of helixseal portion, air channel 22 to be recessed inwardly to be formed for 2 surface of self sealss axle sleeve
One circle groove.Sealing axle sleeve 2 also have positioned at 22 rear of air channel a pair of of mounting groove 23, this to before and after mounting groove 23 simultaneously
Row, be recessed inwardly the circle groove to be formed for 2 surface of self sealss axle sleeve.Sealing axle sleeve 2 also has positioned at 23 rear of mounting groove
Labyrinth seal groove 24,24 self sealss axle sleeve of labyrinth seal groove, 2 surface are recessed inwardly the multiple grooves irregularly arranged to be formed.
Oil free screw machine combined sealing structure further includes the floating ring 5 being set on sealing axle sleeve 2, and floating ring 5 is elastic ring
Plastic cement material is installed in the mounting groove 23 of sealing axle sleeve 2.Oil free screw machine combined sealing structure further includes that be installed on spiral close
Spiral sealing ring 6 in envelope portion 21 and the labyrinth seal 7 being installed in labyrinth seal groove 24.6 structure of spiral sealing ring and spiral shell
The structure for revolving sealing 21 is identical.Labyrinth seal 7 and labyrinth seal groove 24.
Shell 3 is located at the periphery of sealing axle sleeve 2, has the venthole 4 communicated with the air channel 22 of sealing axle sleeve 2.
Rotary shaft 1 is located in oil pocket 6, and when oil free screw machine works, 6 side of oil pocket has a large amount of lubricating oil, but because of nothing
Oil machine needs to provide the air without oily pollution, it is therefore desirable to seal, prevent oil from entering in compressed air.
Sealing axle sleeve 2 is mounted in rotary shaft 1, is rotated together with rotary shaft 1.Oil in oil pocket is close by spiral sealing ring
It is honored as a queen, compressed air is passed through in air channel 22 and carries out hermetic seal, then there is floating ring 5 and labyrinth seal again.
Detailed, when no oil machine works, sealing axle sleeve 2 rotates together with rotary shaft 1, and the lubricating oil in oil pocket 6 passes through close
Spiral sealing ring is sealed for the first time in helixseal portion 21 on envelope axle sleeve 2.When profit can't be fully sealed in spiral sealing ring
When lubricating oil, by the air channel 22 that no oil machine external exhaust gas connects that gas enters sealing axle sleeve 2 by venthole 4 all the way, by
In air pressure height, lubricating oil is made to be conveyed toward 21 end of helixseal portion, according to the principle of helixseal, lubricating oil is made to convey oil back chamber.
Floating ring 5 and labyrinth seal are to be further ensured that the reliability of sealing, and the gas that can also reduce no oil machine compression enters
Oil pocket 6 improves efficiency to reduce interior leakage.
When oil leak occurs in no oil machine, illustrating that sealing device fails, scene, which need to only dismantle, replaces sealing axle sleeve, unlike
A whole set of sealing device is replaced in the past.
It being applied in combination by several sealing means so that sealing performance is best, and sealing axle sleeve and shell are that have gap,
It does not contact in this way, low in energy consumption, abrasion is small, and the reliability of sealing device is high.The structure of the utility model, it is right to can be used for other
The exigent equipment of axle sealing structure.
The utility model is simple in structure, reliability is high, adaptable, at low cost, easy for installation.In high-speed rotary,
This structure may be implemented effectively to seal, once leaking, can also realize quick replacement processing, greatly strengthen client's body
Degree of testing.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the utility model one of embodiment, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (3)
1. a kind of oil free screw machine combined sealing structure, it is characterised in that：It includes rotary shaft, is sheathed in the rotary shaft
Sealing axle sleeve, the shell positioned at rotary shaft periphery, the sealing axle sleeve include being located at the helixseal portion of front end and being located at
The air channel at helixseal portion rear, the helixseal portion are that the surface of self sealss axle sleeve is recessed inwardly to form groove,
The overall structure of groove be helicitic texture, the air channel be recessed inwardly from the sealing axle sleeve surface to be formed one enclose it is recessed
Slot installs a spiral sealing ring in the helixseal portion, and the shell is located at the periphery of the sealing axle sleeve, with and institute
State the venthole that the air channel of sealing axle sleeve communicates.
2. oil free screw machine combined sealing structure as described in claim 1, it is characterised in that：The sealing axle sleeve also has position
A pair of of mounting groove in the air channel rear, this is to side by side, the mounting groove is from the sealing axle sleeve table before and after mounting groove
The circle groove that inward-facing recess is formed, it further includes being installed on the peace of the sealing axle sleeve that the oil Screw chiller, which closes sealing structure,
Floating ring in tankage.
3. oil free screw machine combined sealing structure as described in claim 1, it is characterised in that：The sealing axle sleeve also has position
Labyrinth seal groove in the mounting groove rear, the labyrinth seal groove self sealss boss surfaces be recessed inwardly to be formed it is irregular
Multiple grooves of arrangement are equipped with a labyrinth seal in the labyrinth seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721917814.7U CN207687355U (en) | 2017-12-29 | 2017-12-29 | Oil free screw machine combined sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721917814.7U CN207687355U (en) | 2017-12-29 | 2017-12-29 | Oil free screw machine combined sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207687355U true CN207687355U (en) | 2018-08-03 |
Family
ID=62993799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721917814.7U Active CN207687355U (en) | 2017-12-29 | 2017-12-29 | Oil free screw machine combined sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207687355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577901A (en) * | 2020-05-26 | 2020-08-25 | 南京工业大学 | Labyrinth and spiral combined sealing device |
| CN114439943A (en) * | 2022-02-09 | 2022-05-06 | 沈阳工业大学 | Spiral sealing structure and compressor |
-
2017
- 2017-12-29 CN CN201721917814.7U patent/CN207687355U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577901A (en) * | 2020-05-26 | 2020-08-25 | 南京工业大学 | Labyrinth and spiral combined sealing device |
| CN111577901B (en) * | 2020-05-26 | 2022-04-01 | 南京工业大学 | Labyrinth and spiral combined sealing device |
| CN114439943A (en) * | 2022-02-09 | 2022-05-06 | 沈阳工业大学 | Spiral sealing structure and compressor |
| CN114439943B (en) * | 2022-02-09 | 2024-05-14 | 沈阳工业大学 | Spiral seal structure and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211223 Address after: 201800 No. 201, Jiamei Road, Nanxiang high tech park, Jiading District, Shanghai Patentee after: SHANGHAI UNITED COMPRESSOR Co.,Ltd. Address before: 215400 building 3, No. 269, Xingang Middle Road, Shaxi Town, Taicang City, Suzhou City, Jiangsu Province Patentee before: SHUNQI COMPRESSOR TECHNOLOGY (SUZHOU) Co.,Ltd. |