CN108087281B - Labyrinth sealing slide sheet of slide sheet type air compressor and sealing method - Google Patents
Labyrinth sealing slide sheet of slide sheet type air compressor and sealing method Download PDFInfo
- Publication number
- CN108087281B CN108087281B CN201711276272.4A CN201711276272A CN108087281B CN 108087281 B CN108087281 B CN 108087281B CN 201711276272 A CN201711276272 A CN 201711276272A CN 108087281 B CN108087281 B CN 108087281B
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- China
- Prior art keywords
- sliding
- outer side
- vane
- notch
- machine body
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 5
- 238000005192 partition Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000001965 increasing effect Effects 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a sliding vane type air compressor's labyrinth seals gleitbretter and sealing method, the outside surface of gleitbretter can contact with the organism inner wall, through on the outside surface at the gleitbretter, open to the sunken notch in gleitbretter inboard, when making gleitbretter and organism inner wall relative motion produce the friction, can let the outside surface department that has the notch on the gleitbretter produce deformation to increase the tight degree of subsides between the outside surface of gleitbretter and the organism inner wall, reach the effect of the sealing performance between reinforcing gleitbretter and the organism inner wall. The partition section between the notches is arranged for preventing the labyrinth seal sliding vane from colliding with the air inlet and the air outlet when sliding across the air inlet and the air outlet in a rotating manner, and the partition section can effectively prolong the service life of the sliding vane and prevent the sliding vane from reducing the sealing performance due to damage.
Description
Technical Field
The invention relates to an improvement of an air compressor, in particular to an improvement of the sealing aspect of a sliding vane type air compressor.
Background
At present, the contact surface adopted by the sliding vanes in a large number of sliding vane type air compressors used at home and abroad is a simple circular arc surface. Under the condition that the rotor rotation axis of the sliding-vane machine is eccentric to the inner cavity of the machine body, the sliding vane cannot be completely meshed with the inner cavity of the machine body due to the fact that the contact point curvature of the sliding vane and the inner cavity of the machine body is inconsistent. Because the arc top surface of the sliding piece can not be completely meshed with the inner cavity surface of the machine body, the sliding sealing condition of the sliding piece and the inner cavity of the machine body is severe, and therefore generated gas leaks from the high-pressure cavity to the low-pressure cavity. The internal leakage can cause the disadvantages of the sliding vane type air compressor such as reduced volumetric efficiency, increased temperature, reduced specific energy index of the volume, difficult specific pressure of the sliding vane type air compressor, and the like. This problem cannot be solved by the conventional sliding vane air compressor.
The following patents are found to have similarities with the present invention through domestic search:
The utility model discloses a stator for sliding vane type air compressor and compressor thereof, which is the utility model discloses an application number is CN201620709954.4, and the name is "a stator for sliding vane type air compressor and compressor thereof", wherein, the stator includes: a stator body (21); the stator body (21) is integrally cylindrical, and an eccentric hole (211) penetrating through two ends is formed in the stator body (21); a plurality of air outlets (212) communicated with the outside are arranged on the side wall of the eccentric hole (211) at intervals; each air outlet (212) is distributed along the axial direction of the eccentric hole (211), and the starting point (2121) and the end point (2122) of each air outlet (212) along the circumferential direction of the eccentric hole (211) are aligned one by one; the compressor is internally provided with the stator, the stator has the advantage of simple processing, and the compressor has the advantages of simple structure, convenient manufacture and the like.
Although the above patent also relates to a sliding vane type air compressor, the sliding vane or the body (stator body) is not structurally improved, and the technical problems that the contact point curvature of the sliding vane and the body cavity is inconsistent, the sliding vane and the body cavity cannot be completely meshed, the sealing effect is poor, and gas leaks from the high pressure cavity to the low pressure cavity are still not solved.
disclosure of Invention
the technical problem to be solved by the invention is as follows: how to increase the sealed effect of gleitbretter and organism inner chamber, reduce gaseous leaking to the low pressure intracavity from high-pressure chamber, and the emergence of the unfavorable condition such as air compressor volumetric efficiency that leads to reduces, temperature rise, volumetric specific energy index decline, the slide vane type air compressor specific pressure is difficult to do height.
In order to solve the problems, the technical scheme provided by the invention is as follows: the utility model provides a sliding vane is sealed to sliding vane formula air compressor's labyrinth, on the outside surface of the gleitbretter that gleitbretter and organism inner wall contacted, it has the notch sunken to the gleitbretter inboard to open, when making gleitbretter and organism inner wall relative motion produce the friction, strengthens the sealing performance between gleitbretter and the organism inner wall.
Furthermore, the machine body is provided with an air outlet and an air inlet which penetrate through the machine body, a partition is arranged at the position, corresponding to the air outlet and the air inlet, of the outer side surface of the sliding sheet, and the partition is a surface without a notch on the outer side surface of the sliding sheet, so that the notches on the outer side surface of the sliding sheet and the partition are alternately distributed.
Furthermore, notches are formed in the outer side surface of the sliding sheet and the end faces of the two ends of the sliding sheet, the outer side surface of the sliding sheet is an arc surface, and the cross section of each notch is a V-shaped or U-shaped groove.
Furthermore, both ends of the sliding sheet are also provided with notches which are sunken towards the inner side of the sliding sheet.
Furthermore, the notch is one or more than two line segment-shaped grooves which are parallel to each other.
Furthermore, the notch is more than one wave-shaped groove.
Further, the notches are staggered grooves.
The utility model provides a method for sealing up gleitbretter of sliding vane formula air compressor, when the gleitbretter rotated along with the rotor, the outside surface of gleitbretter can contact with the organism inner wall, through on the outside surface at the gleitbretter, open to the sunken notch in gleitbretter inboard, when making gleitbretter and organism inner wall relative motion produce the friction, can let the outside surface department that has the notch on the gleitbretter produce deformation, thereby increase the degree of hugging closely between the outside surface of gleitbretter and the organism inner wall, reach the effect of the sealing performance between reinforcing gleitbretter and the organism inner wall.
Furthermore, the machine body is provided with an air outlet and an air inlet which penetrate through the machine body, and the positions of the outer side surface of the sliding sheet, which correspond to the air outlet and the air inlet, are provided with partitions, wherein the partitions are surfaces on which no notch is formed on the outer side surface of the sliding sheet; establish through the wall on the outside surface at the gleitbretter and prevent that notch and gas vent and air inlet from producing the scraping to avoid the outside surface of gleitbretter to reduce the sealing performance between gleitbretter and the organism inner wall because of the damage.
Further, notches are formed in the outer side surface of the sliding vane and end faces of two ends of the sliding vane, and the sealing performance of the air compressor is enhanced by increasing the number of the notches in the outer side surface of the sliding vane and/or changing the shape of the notches.
The invention has the advantages that:
1. Open the notch to the gleitbretter inboard sunken in the outside surface of gleitbretter, when making gleitbretter and organism inner wall relative motion produce the friction, can let the outside surface department that has the notch on the gleitbretter produce deformation to increase the tight degree of subsides between the outside surface of gleitbretter and the organism inner wall, can reach the effect of the sealing performance between reinforcing gleitbretter and the organism inner wall.
2. The manufacturing process is simple, and V, U and rectangular notches are machined on the outer circular surface and two end surfaces of the sliding piece part of the original sliding piece type air compressor only by adopting an electric spark erosion machining process.
3. the partition section between the notches is arranged for preventing the labyrinth seal sliding vane from colliding with the air inlet and the air outlet when sliding across the air inlet and the air outlet in a rotating manner, and the partition section can effectively prolong the service life of the sliding vane and prevent the sliding vane from reducing the sealing performance due to damage.
Drawings
FIG. 1 is a schematic view of an embodiment of a compressor installed in an air compressor;
FIG. 2 is a schematic perspective view of a first embodiment;
FIG. 3 is an enlarged partial schematic view of FIG. 2;
FIG. 4 is a schematic plan view of the outer side surface of the slider in the second embodiment;
FIG. 5 is a schematic plan view of the outer side surface of the slider in the third embodiment;
In the figure: 1 machine body, 2 air outlets, 3 sliding sheets, 31 notches, 32 partitions, 4 rotors, 5 air inlets and 6 rotating shafts.
Detailed Description
The invention is described in one step with reference to the following examples and figures:
Example one
As shown in fig. 1, an air compressor body 1 is provided with an air outlet 2 and an air inlet 5 penetrating through the body 1, and a rotating shaft 6 is fixedly connected with a rotor 4. The sliding vane 3 is embedded in the rotor 4, and the rotor 4 is eccentrically arranged in the machine body 1. The outside surface of gleitbretter 3 contacts with the inner wall of organism 1, and the both ends of organism 1 still can be equipped with the end cover, and the both ends of gleitbretter 3 can contact with the end cover. The clearance between rotor 4 and the organism 1 is sealed through rotor 4, gleitbretter 3, organism 1 and end cover, nevertheless because rotor 4 and gleitbretter 3 all are eccentric settings in organism 1, gleitbretter 3 and 1 inner chamber of organism contact point camber inconsistent, and complete meshing can not be accomplished with 1 inner chamber of organism to gleitbretter 3, easily produces gaseous by high-pressure chamber to low pressure intracavity leakage.
As shown in fig. 2 and 3, the outer side surface of the sliding vane 3 is preferably a circular arc surface, the end surfaces of both ends of the sliding vane 3 are generally flat surfaces, and in order to enhance the sealing performance between the sliding vane 3 and the inner wall of the rotor 4, and between the sliding vane 3 and the end cover, notches 31 are provided on the outer side surface of the sliding vane 3 and the end surface of the sliding vane 3, and the notches 31 are grooves recessed toward the inner side of the sliding vane 3. The notch 31 can be formed by electric spark erosion machining or by milling, cutting and cutting by other tools, and the cross section of the notch 31 is a V-shaped or U-shaped groove.
Since the body 1 is opened with the exhaust port 2 and the intake port 5 penetrating the body 1, if the notch 31 on the outer side surface of the vane 3 is continuous, then the notch 31 on the outer side surface of the vane 3 may generate scraping with the exhaust port 2 and the intake port 5, thereby making the outer side surface of the vane 3 reduce the sealing performance between the vane 3 and the inner wall of the body 1 due to the breakage. In order to avoid this, a partition 32 is provided on the outer surface of the vane 3 at a position corresponding to the exhaust port 2 and the intake port 5, and the partition 32 is a surface on the outer surface of the vane 3 where the notch 31 is not opened. That is, the partition 32 is the outer side surface of the vane 3 which is not processed by the notch 31. Because the partition 32 is a smooth arc surface, the air outlet 2 and the air inlet 5 cannot be scraped, so that the notches 31 on the outer side surface of the sliding sheet 3 and the partition 32 are alternately distributed, the service life of the sliding sheet 3 can be effectively prolonged, and the sliding sheet 3 is prevented from being damaged and reducing the sealing performance.
in this embodiment, the notches 31 are a plurality of line-segment-shaped grooves parallel to each other, and the number of the notches 31 is increased to enhance the sealing performance between the sliding blade 3 and the inner wall of the machine body 1. However, as the number of the slots 31 is increased, the friction force between the vane 3 and the body 1 is increased, and the energy consumption for rotating the rotor 4 is increased, so that the number of the slots 31 is preferably in a range of 3 to 5, and the number of the slots 31 is preferably 3 to 5. In addition, the shape of the notch 31 may be a straight line segment, or may be a plurality of wave-shaped or pulse-shaped grooves with uniform intervals.
Example two
As shown in fig. 4, the present embodiment is different from the first embodiment in that a longitudinal notch 31 connected to the transverse notch 31 is provided between two adjacent transverse notches 31, the transverse notch 31 is perpendicular to the longitudinal notch 31, and the transverse notch 31 and the longitudinal notch 31 are criss-cross to form a labyrinth notch 31.
EXAMPLE III
As shown in fig. 5, the present embodiment is different from the first embodiment in that a longitudinal notch 31 connected to a transverse notch 31 is provided between two adjacent transverse notches 31, and the transverse notches 31 are diagonally staggered from the longitudinal notches 31.
It will be apparent that modifications and variations are possible without departing from the principles of the invention as set forth herein.
Claims (5)
1. A labyrinth seal sliding vane of a sliding vane type air compressor is characterized in that a notch (31) which is sunken towards the inner side of a sliding vane (3) is formed in the outer side surface of the sliding vane (3) where the sliding vane (3) is contacted with the inner wall of a machine body (1), so that when the sliding vane (3) and the inner wall of the machine body (1) move relatively to generate friction, the sealing performance between the sliding vane (3) and the inner wall of the machine body (1) is enhanced; an exhaust port (2) and an air inlet (5) which penetrate through the machine body (1) are formed in the machine body (1), a partition (32) is arranged at a position, corresponding to the exhaust port (2) and the air inlet (5), on the outer side surface of the sliding sheet (3), the partition (32) is a surface, not provided with a notch (31), on the outer side surface of the sliding sheet (3), so that the notches (31) and the partitions (32) on the outer side surface of the sliding sheet (3) are alternately distributed; notches (31) are formed in the outer side surface of the sliding piece (3) and the end faces of the two ends of the sliding piece (3), the outer side surface of the sliding piece (3) is an arc surface, and the section of each notch (31) is a V-shaped or U-shaped groove; two ends of the sliding sheet (3) are also provided with notches (31) which are sunken towards the inner side of the sliding sheet (3).
2. Labyrinth seal vane of a vane air compressor, according to claim 1, characterized in that the notch (31) is one or more than two line-segment-shaped grooves parallel to each other.
3. Labyrinth seal vane of a vane air compressor, according to claim 1, characterized in that the notch (31) is more than one wave-shaped groove.
4. labyrinth seal vane of a vane air compressor, according to claim 1, characterized in that the notches (31) are grooves staggered one with the other.
5. A sealing method of a sealing slip sheet of a slip sheet type air compressor is characterized in that when a slip sheet (3) rotates along with a rotor (4), the outer side surface of the slip sheet (3) can be contacted with the inner wall of a machine body (1), and when the slip sheet (3) moves relative to the inner wall of the machine body (1) to generate friction by opening a notch (31) sunken towards the inner side of the slip sheet (3) on the outer side surface of the slip sheet (3), the outer side surface of the notch (31) on the slip sheet (3) can be deformed, so that the adhesion degree between the outer side surface of the slip sheet (3) and the inner wall of the machine body (1) is increased, and the effect of enhancing the sealing performance between the slip sheet (3) and the inner wall of the machine body (1) is achieved; an exhaust port (2) and an air inlet (5) which penetrate through the machine body (1) are formed in the machine body (1), a partition (32) is arranged on the outer side surface of the sliding sheet (3) at a position corresponding to the exhaust port (2) and the air inlet (5), and the partition (32) is a surface which is not provided with a notch (31) on the outer side surface of the sliding sheet (3); the outer side surface of the sliding sheet (3) is provided with a partition (32) to prevent the notch (31) from scraping the exhaust port (2) and the air inlet (5), so that the sealing performance between the sliding sheet (3) and the inner wall of the machine body (1) is prevented from being reduced due to damage of the outer side surface of the sliding sheet (3); notches (31) are formed in the outer side surface of the sliding vane (3) and the end faces of the two ends of the sliding vane (3), and the sealing performance of the air compressor is enhanced by increasing the number of the notches (31) on the outer side surface of the sliding vane (3) and/or changing the shape of the notches (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276272.4A CN108087281B (en) | 2017-12-06 | 2017-12-06 | Labyrinth sealing slide sheet of slide sheet type air compressor and sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276272.4A CN108087281B (en) | 2017-12-06 | 2017-12-06 | Labyrinth sealing slide sheet of slide sheet type air compressor and sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108087281A CN108087281A (en) | 2018-05-29 |
| CN108087281B true CN108087281B (en) | 2019-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711276272.4A Active CN108087281B (en) | 2017-12-06 | 2017-12-06 | Labyrinth sealing slide sheet of slide sheet type air compressor and sealing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108087281B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0821388A (en) * | 1994-07-06 | 1996-01-23 | Shuichi Kitamura | Oilless type rotary pump |
| CN1191277A (en) * | 1997-02-12 | 1998-08-26 | Lg电子株式会社 | Rotary compressor |
| CN201344128Y (en) * | 2008-12-30 | 2009-11-11 | 上海日立电器有限公司 | Vane of rolling rotor compressor |
| CN202545249U (en) * | 2011-07-30 | 2012-11-21 | 浙江鸿友压缩机制造有限公司 | Vaned translational rotor compressor |
| CN204805096U (en) * | 2015-07-13 | 2015-11-25 | 杜洪涛 | Special vacuum pump of atmospheric pressure engine |
| CN205533215U (en) * | 2016-02-01 | 2016-08-31 | 曹明勇 | Sliding blade type air compressor decides rotor assembly |
| JP2017524099A (en) * | 2014-08-22 | 2017-08-24 | ヴァブコ・ヨーロッパ・ベスローテン・フェンノートシャップ・メット・ベペルクテ・アーンスプラーケレクヘイト | Vacuum pump with eccentric drive vane (eccentric pump design) |
-
2017
- 2017-12-06 CN CN201711276272.4A patent/CN108087281B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0821388A (en) * | 1994-07-06 | 1996-01-23 | Shuichi Kitamura | Oilless type rotary pump |
| CN1191277A (en) * | 1997-02-12 | 1998-08-26 | Lg电子株式会社 | Rotary compressor |
| CN201344128Y (en) * | 2008-12-30 | 2009-11-11 | 上海日立电器有限公司 | Vane of rolling rotor compressor |
| CN202545249U (en) * | 2011-07-30 | 2012-11-21 | 浙江鸿友压缩机制造有限公司 | Vaned translational rotor compressor |
| JP2017524099A (en) * | 2014-08-22 | 2017-08-24 | ヴァブコ・ヨーロッパ・ベスローテン・フェンノートシャップ・メット・ベペルクテ・アーンスプラーケレクヘイト | Vacuum pump with eccentric drive vane (eccentric pump design) |
| CN204805096U (en) * | 2015-07-13 | 2015-11-25 | 杜洪涛 | Special vacuum pump of atmospheric pressure engine |
| CN205533215U (en) * | 2016-02-01 | 2016-08-31 | 曹明勇 | Sliding blade type air compressor decides rotor assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108087281A (en) | 2018-05-29 |
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Effective date of registration: 20190514 Address after: 412001 A5-1 District, Tianxin hi tech park, Shifeng District, Zhuzhou, Hunan Applicant after: ZHUZHOU YIXING TECHNOLOGY CO., LTD. Address before: 412001 A5-1 District, Tianxin hi tech park, Shifeng District, Zhuzhou, Hunan Applicant before: Zhuzhou Star Air Intelligent Technology Co.,. |
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