JPH0424686U - - Google Patents
Info
- Publication number
- JPH0424686U JPH0424686U JP6589390U JP6589390U JPH0424686U JP H0424686 U JPH0424686 U JP H0424686U JP 6589390 U JP6589390 U JP 6589390U JP 6589390 U JP6589390 U JP 6589390U JP H0424686 U JPH0424686 U JP H0424686U
- Authority
- JP
- Japan
- Prior art keywords
- pulley
- lip
- bearing cover
- roots
- lips
- 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
- 230000008602 contraction Effects 0.000 claims 1
- 239000004519 grease Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Description
第１図は本考案のルーツ式ブロワのシール装置
の第１の実施例を示す断面図、第２図は同第２の
実施例を示す断面図、第３図は同第３の実施例を
示す断面図、第４図は同第４の実施例を示す断面
図、第５図はルーツ式ブロワの全体構成を示す図
である。
２……ハウジング、３……軸受ケース、５……
プーリ、５ａ……ボス、５ｂ……端面、６……第
１ロータ軸、７……第２ロータ軸、８ａ，８ｂ，
９ａ，９ｂ……軸受、１２……第１ロータ、１３
……第２ロータ、１４……軸受カバー、１４ａ…
…貫通孔、２０……シール部材、２０……シール
本体、２０ｃ，２０ｄ，２０ｅ……リツプ。
Fig. 1 is a sectional view showing a first embodiment of the sealing device for a roots-type blower of the present invention, Fig. 2 is a sectional view showing the second embodiment, and Fig. 3 is a sectional view showing the third embodiment. FIG. 4 is a cross-sectional view showing the fourth embodiment, and FIG. 5 is a diagram showing the overall configuration of the roots-type blower. 2...Housing, 3...Bearing case, 5...
Pulley, 5a...Boss, 5b...End face, 6...First rotor shaft, 7...Second rotor shaft, 8a, 8b,
9a, 9b... Bearing, 12... First rotor, 13
...Second rotor, 14...Bearing cover, 14a...
...through hole, 20... seal member, 20... seal body, 20c, 20d, 20e... lip.
Claims (1)
第２ロータ軸とをそれぞれ軸支する軸受をハウジ
ングと軸受ケースとにそれぞれ設け、上記ハウジ
ングの軸受側に軸受カバーを設け、上記第１ロー
タ軸の軸受カバー側にプーリを配設し、上記プー
リのボスが挿通する貫通孔を上記軸受カバーに設
けたルーツ式ブロワにおいて、 上記軸受カバーの上記貫通孔に、少なくとも１
個のリツプを有するリング状のシール部材を配設
し、 上記プーリの端面または上記プーリのボス外周
のいずれか一方に所定の緊縛力で摺接する上記リ
ツプ、上記シール部材のシール本体内側へ截頭円
錐状に形成したことを特徴とするルーツ式ブロワ
のシール装置。 (2) シール部材のシール本体内側に２個のリツ
プを有し、 上記リツプの一方のリツプをプーリ端面に、他
方のリツプをプーリのボス外周に所定の緊縛力で
摺接するように、上記各リツプを截頭円錐状に形
成し、 上記他方のリツプの縮開方向が上記プーリ端面
側または上記プーリ端面側の反対側となるように
、上記他方のリツプを上記シール本体の内周に形
成したことを特徴とする請求項(1)記載のルーツ
式ブロワのシール装置。 (3) シール部材は内側に２個のリツプを有し、
上記２個のリツプ間にグリスを封入したことを特
徴とする請求項(2)記載のルーツ式ブロワのシー
ル装置。[Claims for Utility Model Registration] (1) Bearings for supporting the first rotor shaft of the first rotor and the second rotor shaft of the second rotor, respectively, are provided in the housing and the bearing case, respectively, and a roots-type blower, wherein a bearing cover is provided on the bearing cover, a pulley is provided on the bearing cover side of the first rotor shaft, and a through hole is provided in the bearing cover through which the boss of the pulley is inserted, the through hole of the bearing cover; at least 1
A ring-shaped sealing member having a lip is disposed, and the lip slides in sliding contact with either the end face of the pulley or the outer periphery of the boss of the pulley with a predetermined binding force, and the lip is truncated toward the inside of the seal body of the sealing member. A roots-type blower sealing device characterized by a conical shape. (2) The seal member has two lips on the inside of the seal body, and each of the above lips is in sliding contact with one lip on the end face of the pulley and the other lip on the outer periphery of the boss of the pulley with a predetermined binding force. The lip is formed into a truncated cone shape, and the other lip is formed on the inner periphery of the seal body such that the direction of contraction and opening of the other lip is on the end face side of the pulley or on the opposite side to the end face side of the pulley. The sealing device for a Roots-type blower according to claim (1). (3) The seal member has two lips on the inside,
A sealing device for a roots type blower according to claim 2, characterized in that grease is sealed between the two lips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6589390U JPH0424686U (en) | 1990-06-20 | 1990-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6589390U JPH0424686U (en) | 1990-06-20 | 1990-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0424686U true JPH0424686U (en) | 1992-02-27 |
Family
ID=31598137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6589390U Pending JPH0424686U (en) | 1990-06-20 | 1990-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0424686U (en) |
-
1990
- 1990-06-20 JP JP6589390U patent/JPH0424686U/ja active Pending
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