JPS59105065U - Sealed circuit oil replenishment device for reciprocating pumps - Google Patents

Sealed circuit oil replenishment device for reciprocating pumps

Info

Publication number
JPS59105065U
JPS59105065U JP20071382U JP20071382U JPS59105065U JP S59105065 U JPS59105065 U JP S59105065U JP 20071382 U JP20071382 U JP 20071382U JP 20071382 U JP20071382 U JP 20071382U JP S59105065 U JPS59105065 U JP S59105065U
Authority
JP
Japan
Prior art keywords
sealed circuit
pressure
circuit
replenishment device
reciprocating pumps
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
Application number
JP20071382U
Other languages
Japanese (ja)
Inventor
大村　高慶
Original Assignee
石川島播磨重工業株式会社
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 by 石川島播磨重工業株式会社 filed Critical 石川島播磨重工業株式会社
Priority to JP20071382U priority Critical patent/JPS59105065U/en
Publication of JPS59105065U publication Critical patent/JPS59105065U/en
Pending legal-status Critical Current

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  • Reciprocating Pumps (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は最近適えられている密封回路油の補給方式を示
す説明図、第２図は本考ｉの装置の説明図である。 １．２・・・コンクリートシリンダ、３．４・・・油圧
シリンダ、５・・・密封回路、６・・・ピストン、８・
・・油圧源、９・・・チェック弁、１０・・・補給回路
、１１・・・スプリング。FIG. 1 is an explanatory diagram showing a recently applied sealed circuit oil replenishment system, and FIG. 2 is an explanatory diagram of a device according to the present invention. 1.2... Concrete cylinder, 3.4... Hydraulic cylinder, 5... Sealed circuit, 6... Piston, 8...
...Hydraulic pressure source, 9...Check valve, 10...Replenishment circuit, 11...Spring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油圧シリンダのヘッド側に密封回路を設け、ロンド側よ
り加圧するようにした往復動ポンプの上記密封回路に、
油圧源から圧油を補給できる補給回路を設け、且つ陪補
給回路に、上記油圧シリンダのロンド側圧力とヘッド側
圧力の差よりも油圧源の圧力と密封回路の圧力の差圧が
大となると開くチェック弁を有してなることを特徴とす
る往復動ポンプの密封回路油自動補給装置。A sealed circuit is provided on the head side of the hydraulic cylinder, and the sealed circuit of the reciprocating pump is pressurized from the rond side.
If a replenishment circuit that can replenish pressure oil from a hydraulic source is provided, and the differential pressure between the pressure of the hydraulic source and the pressure of the sealed circuit is greater than the difference between the rond side pressure and head side pressure of the hydraulic cylinder, in the supplementary replenishment circuit. A sealed circuit oil replenishing device for a reciprocating pump, characterized by having a check valve that opens.
JP20071382U 1982-12-29 1982-12-29 Sealed circuit oil replenishment device for reciprocating pumps Pending JPS59105065U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20071382U JPS59105065U (en) 1982-12-29 1982-12-29 Sealed circuit oil replenishment device for reciprocating pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20071382U JPS59105065U (en) 1982-12-29 1982-12-29 Sealed circuit oil replenishment device for reciprocating pumps

Publications (1)

Publication Number Publication Date
JPS59105065U true JPS59105065U (en) 1984-07-14

Family

ID=30426229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20071382U Pending JPS59105065U (en) 1982-12-29 1982-12-29 Sealed circuit oil replenishment device for reciprocating pumps

Country Status (1)

Country Link
JP (1) JPS59105065U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454982U (en) * 1990-09-14 1992-05-12

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505359A (en) * 1973-05-24 1975-01-21
JPS5735175A (en) * 1980-08-06 1982-02-25 Niigata Eng Co Ltd Automatic adjustment unit for amount of closing oil for concrete pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505359A (en) * 1973-05-24 1975-01-21
JPS5735175A (en) * 1980-08-06 1982-02-25 Niigata Eng Co Ltd Automatic adjustment unit for amount of closing oil for concrete pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454982U (en) * 1990-09-14 1992-05-12

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