JPH02124289U - - Google Patents
Info
- Publication number
- JPH02124289U JPH02124289U JP3332589U JP3332589U JPH02124289U JP H02124289 U JPH02124289 U JP H02124289U JP 3332589 U JP3332589 U JP 3332589U JP 3332589 U JP3332589 U JP 3332589U JP H02124289 U JPH02124289 U JP H02124289U
- Authority
- JP
- Japan
- Prior art keywords
- shaft sealing
- sealing portion
- oil
- communication hole
- atmosphere
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 6
Description
第１図は本考案に係るオイルフリースクリユ式
圧縮機の部分縦断面図、第２図は第１図の−
線部分断面図、第３図は従来のオイルフリースク
リユ式圧縮機の部分横断面図、第４図は第３図の
−線部分断面図である。
１……ロータ室、２……スクリユロータ、４…
…吸込口、５……軸受部、７……第１軸封部、９
……第２軸封部、１０……第１大気連通孔、１１
……第２大気連通孔。
Fig. 1 is a partial vertical sectional view of an oil-free screw compressor according to the present invention, and Fig. 2 is a -
FIG. 3 is a partial cross-sectional view of a conventional oil-free screw compressor, and FIG. 4 is a partial cross-sectional view taken along the - line in FIG. 3. 1...rotor chamber, 2...screw rotor, 4...
... Suction port, 5... Bearing section, 7... First shaft sealing section, 9
...Second shaft seal, 10...First atmospheric communication hole, 11
...Second atmospheric communication hole.
Claims (1)
ロータを支持する少なくとも吸込口側の注油式軸
受部との間に、上記ロータ室側から、第１軸封部
と第２軸封部とを設けるとともに、この第１軸封
部、第２軸封部を大気にに連通させる第１大気連
通孔、第２大気連通孔を設けたオイルフリースク
リユ式ポンプ装置において、少なくとも上記第２
大気連通孔を上記第２軸封部の最下部に開口させ
、かつ水平または大気開放側に向けて下り勾配に
なるように設けたことを特徴とするオイルフリー
スクリユ式ポンプ装置。 A first shaft sealing portion and a second shaft sealing portion are provided from the rotor chamber side between the rotor chamber and the oil-lubricated bearing portion on at least the suction port side that supports the screw rotor housed in the rotor chamber. In an oil-free screw type pump device provided with a first atmosphere communication hole and a second atmosphere communication hole for communicating the first shaft sealing portion and the second shaft sealing portion with the atmosphere, at least the second
An oil-free screw type pump device, characterized in that the atmosphere communication hole is opened at the lowest part of the second shaft sealing part and is provided horizontally or with a downward slope toward the atmosphere open side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3332589U JPH02124289U (en) | 1989-03-24 | 1989-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3332589U JPH02124289U (en) | 1989-03-24 | 1989-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02124289U true JPH02124289U (en) | 1990-10-12 |
Family
ID=31536907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3332589U Pending JPH02124289U (en) | 1989-03-24 | 1989-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02124289U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008229740A (en) * | 2007-03-16 | 2008-10-02 | Hitachi Koki Co Ltd | Power tool |
| WO2015136803A1 (en) * | 2014-03-10 | 2015-09-17 | 株式会社神戸製鋼所 | Oil-free screw compressor |
| JP2016070271A (en) * | 2014-09-29 | 2016-05-09 | 株式会社神戸製鋼所 | Oil-free screw compressor |
| WO2017164153A1 (en) * | 2016-03-25 | 2017-09-28 | 株式会社神戸製鋼所 | Oil free screw compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5564172A (en) * | 1978-11-02 | 1980-05-14 | Hitachi Ltd | Oil thrower for hydraulic machinery |
| JPS62186073A (en) * | 1986-02-12 | 1987-08-14 | Ulvac Corp | Sealing device for rotary vacuum pump |
-
1989
- 1989-03-24 JP JP3332589U patent/JPH02124289U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5564172A (en) * | 1978-11-02 | 1980-05-14 | Hitachi Ltd | Oil thrower for hydraulic machinery |
| JPS62186073A (en) * | 1986-02-12 | 1987-08-14 | Ulvac Corp | Sealing device for rotary vacuum pump |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008229740A (en) * | 2007-03-16 | 2008-10-02 | Hitachi Koki Co Ltd | Power tool |
| WO2015136803A1 (en) * | 2014-03-10 | 2015-09-17 | 株式会社神戸製鋼所 | Oil-free screw compressor |
| JP2015169177A (en) * | 2014-03-10 | 2015-09-28 | 株式会社神戸製鋼所 | oil-free screw compressor |
| EP3118457A4 (en) * | 2014-03-10 | 2017-11-08 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Oil-free screw compressor |
| US10138889B2 (en) | 2014-03-10 | 2018-11-27 | Kobe Steel, Ltd. | Oil-free screw compressor |
| JP2016070271A (en) * | 2014-09-29 | 2016-05-09 | 株式会社神戸製鋼所 | Oil-free screw compressor |
| WO2017164153A1 (en) * | 2016-03-25 | 2017-09-28 | 株式会社神戸製鋼所 | Oil free screw compressor |
| TWI638106B (en) * | 2016-03-25 | 2018-10-11 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Oil-free screw compressor |
| US10954941B2 (en) | 2016-03-25 | 2021-03-23 | Kobe Steel, Ltd. | Oil-free screw compressor |
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