CN209539554U - A kind of oil free screw compressor support end structure - Google Patents
A kind of oil free screw compressor support end structure Download PDFInfo
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- CN209539554U CN209539554U CN201920241381.0U CN201920241381U CN209539554U CN 209539554 U CN209539554 U CN 209539554U CN 201920241381 U CN201920241381 U CN 201920241381U CN 209539554 U CN209539554 U CN 209539554U
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- screw compressor
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Abstract
The utility model provides a kind of structure of oil free screw compressor support end, it includes shell, the bearing for being assemblied in the intracorporal axis of shell and being set on axis, axis is equipped with the first sealing and the second sealing, shell side successively radially offers the first hole, second hole and fuel feed hole, the shell other side successively radially offers third hole, 4th hole and oil-recovery tank, inner walls are recessed inwardly to form the first hole of connection, second hole of first slot and connection in third hole, second slot in the 4th hole, oil-recovery tank external connection fuel tank, second slot is connected by the 4th hole with fuel tank, second slot is connected by the second hole with atmosphere, first slot is connected to compressor inlet by third hole, first slot is connected by the first hole with atmosphere, first slot, second slot is between the first sealing and the second sealing.The processing is simple and easy for installation for the structure of the oil free screw compressor support end, realizes that the segmentation effect of gas and oil is good.
Description
Technical field
The utility model relates to oil free screw compressor technical field, in particular to a kind of oil free screw compressor support end
Structure.
Background technique
Oil free screw compressor is widely used in the industrial circles such as weaving, pharmacy as a kind of important industrial general equipment.
Its power consumption should be considered in the support end of oil free screw compressor, and also guaranteed to have oil to enter gas side, previous is oil-free
Helical-lobe compressor generally support end using mechanical seal, contact PTFE oil sealing sealing and sealing ring sealing so that oil and
Gas separates, but these sealed prices are high, power consumption is big, easy to wear, maintenance inconvenience, and contact oil seal is not suitable in high speed rotation work
Make condition.
In occasions such as weaving, pharmacy, sewage treatments, clean air is needed, this just needs our oil-free secret envelope can
It leans on, energy conservation, common contact oil seal is possible to not reach requirement in reliability, be easy to cause oil pocket to reveal, make to provide
Air it is not clean enough.
The oil free screw pressure that a kind of structure is simple in consideration of it, the utility model provides, effect is good, at low cost, convenient for disassembly and assembly
Contracting machine supports end structure.
Utility model content
The oil free screw pressure that the purpose of the utility model is to provide a kind of structures is simple, effect is good, at low cost, convenient for disassembly and assembly
Contracting machine supports end structure, it solves the above-mentioned problems of the prior art.
To achieve the above object, the technical solution that the utility model uses is: the oil free screw compressor support end
Structure comprising shell is assemblied in the intracorporal axis of the shell and is arranged the bearing coated on the shaft and by the shell, institute
It states axis and successively radially offers the first hole, the second hole and fuel feed hole equipped with the first sealing and the second sealing, the shell side,
The shell other side successively radially offers third hole, the 4th hole and oil-recovery tank, and the inner walls are recessed inwardly the company of being formed
Lead to second slot in first hole, first slot in the third hole and connection second hole, the 4th hole, outside the oil-recovery tank
Portion connects fuel tank, and second slot is connected by the 4th hole with the fuel tank, and second slot passes through second hole
It is connected with atmosphere, first slot is connected to compressor inlet by the third hole, and first slot passes through described first
Hole is connected with atmosphere, and first slot, the second slot are between first sealing and second sealing.
First slot is parallel each other with second slot and is annular groove.
Described first is sealed into labyrinth seal, and described second is sealed into helixseal, and the helixseal is close to described
Two slots, the labyrinth seal is close to first slot.
The axis includes leading portion, middle section and back segment, and the leading portion diameter is less than the middle section diameter, and the middle section diameter is small
In the back segment diameter.
The bearing is set in the leading portion, is lubricating oil side on the outside of the leading portion.
Bearing bore is equipped in the bearing, the fuel feed hole is connected with the bearing bore.
End ring is sealed in the bearing, the end ring is set in the leading portion.
The labyrinth seal, the helixseal are set to the back segment, and the back segment is atmospheric side.
Compared with prior art, the oil free screw compressor support end structural advantages of the utility model: lubricating oil is to bearing
Fuel tank is returned to through oil-recovery tank after being lubricated, lubricating oil is reduced and enters gas side；The helixseal blocking portion being arranged on axis shunts
To air side；The labyrinth seal that axis is equipped with stops gas to enter lubricating oil side, and a small amount of gas into the first slot passes through the first hole
It is connected with atmosphere, the other end is communicated by third hole with compressor inlet, since compressor inlet is negative pressure, so first
The gas of slot returns to compressor inlet, will not enter lubricating oil side, will not be mixed into generation bubble because of gas in fuel tank.This is practical new
The processing is simple and easy for installation for the oil free screw compressor support end structure of type, realizes the segmentation of gas and oil well.
Detailed description of the invention
The technical solution in example is applied in order to illustrate more clearly of the utility model, it below will be to required in embodiment description
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is the utility model oil free screw compressor support end structural profile illustration；
Fig. 2 is the axis of the utility model and the assembly structure diagram of shell；
Fig. 3 is the structural schematic diagram for the axis that oil free screw compressor supports end structure in Fig. 2.
Specific embodiment
With reference to embodiment and Figure of description, the utility model is described in further detail, but this
The embodiment of utility model is without being limited thereto.
Referring to Fig. 1 to Fig. 3, a kind of oil free screw compressor support end structure provided by the utility model comprising axis 1,
The shell 2 that is set in outside axis 1 is installed in shell 2 and the bearing 3 being set on axis 1, the end ring 4 being sealed in bearing 3
And it is connected to the fuel tank 5 of shell 2.In addition, being equipped with bearing bore 31 in bearing 3.
Fig. 1, Fig. 3 are participated in, axis 1 includes leading portion 11, middle section 12 and back segment 13, and 11 diameter of leading portion is less than 12 diameter of middle section, in
12 diameters of section are less than 13 diameter of back segment, and bearing 3 is set in the leading portion 11 of axis 1, and middle section 12 and shell 2, bearing 3 surround a shoe cream room
14, back segment 13 is equipped with first the 15, second sealing 16 of sealing, and the first sealing 15 is labyrinth seal, if the labyrinth seal is to use
Dry labyrinth type tortuous passageway limitation fluid or the non-contacting seal of gas leakage, the second sealing 16 is helixseal, the spiral shell
Rotation be sealed into screw thread prevent liquid leakage non-contacting seal, between the labyrinth seal and helixseal retain one section away from
From.
Referring to Fig. 1, Fig. 2, it is another that 2 side of shell radially offers the first hole 21, the second hole 22 and fuel feed hole 23, shell 2
Side radially offers third hole 24, the 4th hole 25 and oil-recovery tank 26, and the first hole 21 is corresponding with third hole 24, the second hole 22 and
Four holes 25 are corresponding.2 inner wall of shell is recessed inwardly to form the first slot 27, the second slot 28, and first slot 27, the second slot 28 are each other
Parallel and be annular groove, wherein the first slot 27 is connected with the first hole 21, third hole 24 respectively, the second slot 28 is respectively with second
Hole 22, the 4th hole 25 are connected.Axis 1 is assemblied in shell 2, and 1 end face of axis and 2 end face of shell are trapped in certain interval, gas and oil
It cuts in support end two sides, the leading portion 11 of axis 1 is lubricating oil side, and the back segment 13 of axis 1 is gas side.First slot, 27 one end passes through
First hole 21 is connected with atmosphere, and 27 other end of the first slot is communicated with compressor inlet 6 by third hole 24, and compressor into
Port 6 is negative pressure.Second slot, 28 one end is connected by the second hole 22 with atmosphere, 28 other end of the second slot pass through the 4th hole 25 and
Fuel tank 5 is connected.The shoe cream room 14 of 3 side of bearing is communicated with oil-recovery tank 26, and oil-recovery tank 26 leads to fuel tank 5.In addition, axis 1 and shell 2
After assembly, the first slot 27, the second slot 28 are between labyrinth seal 15 and helixseal 16.
When operating, lubricating oil is lubricated bearing 3 into bearing bore 31 by fuel feed hole 23, and lubricating oil passes through bearing
Fuel tank 5 is returned to from oil-recovery tank 26 and 3 other end of bearing after 3, since fuel tank 5 is connected to atmosphere, so 31 pressure of bearing bore is very low, is returned
Oil is very unobstructed.When lubricating oil is lubricated bearing 3, some lubricating oil can be sidled toward air, but be set on 1 back segment 13 of axis
Some helixseals 16 stop oily entrance, so at the second slot 28 almost without lubricating oil, even if with the presence of lubricating oil, due to
Second slot 28 is connected by the second hole 22 with atmosphere, and the lubricating oil of the second slot 28 returns to fuel tank 5 from the 4th hole 25.
When operating, the gas of gas side can also be run toward lubricating oil side, and gas passes through the labyrinth seal that 1 back segment 13 of axis is equipped with
15, only a small amount of gas enters the first slot 21, and 21 one end of the first slot is connected by the first hole 21 with atmosphere, and the other end passes through third
Hole 24 is communicated with compressor inlet 6, since compressor inlet 6 is negative pressure, so the gas of the first slot 21 return to compressor into
Port 6 will not enter lubricating oil side, do not have excessive gas loss in this way, will not be mixed into generation bubble because of gas in fuel tank 5.This
The axis 1 and shell 2 of the outer support end structure do not contact, will not loss power, support end structure processing is mainly hole and slot,
The processing is simple and easy for installation.
Certainly, those skilled in the art in the art it should be appreciated that above-described embodiment be intended merely to illustrate it is practical
It is novel, and it is not used as the restriction to the utility model, as long as in the spirit of the utility model, to above-mentioned implementation
Variation, the modification of example will all be fallen in the range of the utility model claims.
Claims (8)
1. a kind of oil free screw compressor supports end structure comprising shell is assemblied in the intracorporal axis of the shell and is set in institute
The bearing stated on axis and coated by the shell, it is characterised in that: the axis is equipped with the first sealing and the second sealing, the shell
Body side successively radially offers the first hole, the second hole and fuel feed hole, the shell other side successively radially offer third hole,
4th hole and oil-recovery tank, the inner walls be recessed inwardly to be formed be connected to first hole, the third hole the first slot and
It is connected to second slot in second hole, the 4th hole, the oil-recovery tank external connection fuel tank, second slot passes through the 4th hole
It is connected with the fuel tank, second slot is connected by second hole with atmosphere, and first slot passes through the third hole
It is connected to compressor inlet, first slot is connected by first hole with atmosphere, and first slot, the second slot are in institute
It states between the first sealing and second sealing.
2. oil free screw compressor as described in claim 1 supports end structure, it is characterised in that: first slot and described the
Two slots are parallel each other and are annular groove.
3. oil free screw compressor as claimed in claim 2 supports end structure, it is characterised in that: described first is sealed into labyrinth
Sealing, described second is sealed into helixseal, and the helixseal is close to second slot, and the labyrinth seal is close to described the
One slot.
4. oil free screw compressor as described in claim 1 supports end structure, it is characterised in that: the axis include leading portion, in
Section and back segment, the leading portion diameter are less than the middle section diameter, and the middle section diameter is less than the back segment diameter.
5. oil free screw compressor as claimed in claim 4 supports end structure, it is characterised in that: the bearing is set in described
Leading portion, the leading portion outside is lubricating oil side.
6. oil free screw compressor as claimed in claim 5 supports end structure, it is characterised in that: be equipped with bearing in the bearing
Chamber, the fuel feed hole are connected with the bearing bore.
7. oil free screw compressor as claimed in claim 6 supports end structure, it is characterised in that: be sealed with axis in the bearing
Retaining ring is held, the end ring is set in the leading portion.
8. oil free screw compressor as claimed in claim 4 supports end structure, it is characterised in that: described first seals, is described
Second is sealed at the back segment, and the back segment is atmospheric side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241381.0U CN209539554U (en) | 2019-02-26 | 2019-02-26 | A kind of oil free screw compressor support end structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241381.0U CN209539554U (en) | 2019-02-26 | 2019-02-26 | A kind of oil free screw compressor support end structure |
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| Publication Number | Publication Date |
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| CN209539554U true CN209539554U (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920241381.0U Active CN209539554U (en) | 2019-02-26 | 2019-02-26 | A kind of oil free screw compressor support end structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667761A (en) * | 2019-02-26 | 2019-04-23 | 顺气压缩机技术（苏州）有限公司 | A kind of oil free screw compressor support end structure |
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2019
- 2019-02-26 CN CN201920241381.0U patent/CN209539554U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667761A (en) * | 2019-02-26 | 2019-04-23 | 顺气压缩机技术（苏州）有限公司 | A kind of oil free screw compressor support end structure |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20211227 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. |