JPH0462389U - - Google Patents

Info

Publication number
JPH0462389U
JPH0462389U JP10237390U JP10237390U JPH0462389U JP H0462389 U JPH0462389 U JP H0462389U JP 10237390 U JP10237390 U JP 10237390U JP 10237390 U JP10237390 U JP 10237390U JP H0462389 U JPH0462389 U JP H0462389U
Authority
JP
Japan
Prior art keywords
housing
exhaust hole
rotor
rotary shaft
hole
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.)
Granted
Application number
JP10237390U
Other languages
Japanese (ja)
Other versions
JPH0716067Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP10237390U priority Critical patent/JPH0716067Y2/en
Publication of JPH0462389U publication Critical patent/JPH0462389U/ja
Application granted granted Critical
Publication of JPH0716067Y2 publication Critical patent/JPH0716067Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Compressor (AREA)
  • Rotary Pumps (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案にかかる無給油式回転真空ポン
プの断面図、第２図は本考案の逆止弁を示す図で
ある。 １……無給油式回転真空ポンプ、２……ハウジ
ング、３……ロータ、４……ベーン、５……吸気
孔、６……排気孔、７……逆止弁、８……弁カバ
ープレート、９……弁座、１０……小孔。 FIG. 1 is a cross-sectional view of an oil-free rotary vacuum pump according to the present invention, and FIG. 2 is a diagram showing a check valve according to the present invention. 1...Oil-free rotary vacuum pump, 2...Housing, 3...Rotor, 4...Vane, 5...Intake hole, 6...Exhaust hole, 7...Check valve, 8...Valve cover plate , 9... Valve seat, 10... Small hole.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ハウジングで囲まれた空間内にベーンを嵌装し
たロータを収容し、フロントハウジングとリアハ
ウジング間に亘り前記ロータの回転軸を回転自在
に支承して上記空間内でロータを前記回転軸と共
に回転軸回りに回転可能に構成し、前記ハウジン
グの壁面に空気の吸気孔と排気孔を設け、前記排
気孔にハウジング外部の空気が排気孔からハウジ
ング内に逆流するのを防ぐ逆止弁を取着した無給
油式回転ポンプにおいて、前記逆止弁に排気孔の
略中央に位置する小孔を穿設することを特徴とす
る無給油式回転真空ポンプ。 A rotor fitted with a vane is housed in a space surrounded by a housing, and a rotary shaft of the rotor is rotatably supported between a front housing and a rear housing, and the rotor and a rotary shaft are supported in the space together with the rotary shaft. The housing is configured to be rotatable around the housing, an air intake hole and an air exhaust hole are provided on the wall surface of the housing, and a check valve is attached to the exhaust hole to prevent air from outside the housing from flowing back into the housing from the exhaust hole. An oil-free rotary vacuum pump, characterized in that the check valve has a small hole located approximately in the center of the exhaust hole.
JP10237390U 1990-09-29 1990-09-29 Oil-free rotary vacuum pump Expired - Lifetime JPH0716067Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10237390U JPH0716067Y2 (en) 1990-09-29 1990-09-29 Oil-free rotary vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10237390U JPH0716067Y2 (en) 1990-09-29 1990-09-29 Oil-free rotary vacuum pump

Publications (2)

Publication Number Publication Date
JPH0462389U true JPH0462389U (en) 1992-05-28
JPH0716067Y2 JPH0716067Y2 (en) 1995-04-12

Family

ID=31846575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10237390U Expired - Lifetime JPH0716067Y2 (en) 1990-09-29 1990-09-29 Oil-free rotary vacuum pump

Country Status (1)

Country Link
JP (1) JPH0716067Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107387411A (en) * 2017-08-03 2017-11-24 重庆市斯坦宾自能科技有限公司 The electric vacuum pump of high efficiency and heat radiation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107387411A (en) * 2017-08-03 2017-11-24 重庆市斯坦宾自能科技有限公司 The electric vacuum pump of high efficiency and heat radiation

Also Published As

Publication number Publication date
JPH0716067Y2 (en) 1995-04-12

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