JPH03213685A - Multiple gear pump - Google Patents

Multiple gear pump

Info

Publication number
JPH03213685A
JPH03213685A JP826290A JP826290A JPH03213685A JP H03213685 A JPH03213685 A JP H03213685A JP 826290 A JP826290 A JP 826290A JP 826290 A JP826290 A JP 826290A JP H03213685 A JPH03213685 A JP H03213685A
Authority
JP
Japan
Prior art keywords
gear pump
confinement
center point
confined
fluid
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
JP826290A
Other languages
Japanese (ja)
Inventor
Shuji Kayano
Ichiro Nakamura
Tadahiko Nogami
Haruo Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP826290A priority Critical patent/JPH03213685A/en
Publication of JPH03213685A publication Critical patent/JPH03213685A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce rate of volume variation in a confining part, and reduce pressure pulsation and vibration/noise generated due to abnormal pressure rise or pressure drop, by providing a communication passage to communication the vicinity of engagement center point of a gear pump to that of another gear pump.
CONSTITUTION: A communicating passage 21 to communication the vicnity of an engagement center point of a gear pump A to that of another gear pump B, supplies the fluid in a confinedly compressing part from the beginning of confinement to the center point of confinement of one gear pump A to a confinedly expanding part from the center point of confinement to the end of confinement of the other pump B. Hereby, the pressure in the confined part does not become abnormally high or low. Further, coming in and out of the fluid between the confined part and the suction port or the discharge port due to surplus or shortage of the fluid accompanying confined compression or confined expansion.
COPYRIGHT: (C)1991,JPO&Japio
JP826290A 1990-01-19 1990-01-19 Multiple gear pump Pending JPH03213685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP826290A JPH03213685A (en) 1990-01-19 1990-01-19 Multiple gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP826290A JPH03213685A (en) 1990-01-19 1990-01-19 Multiple gear pump

Publications (1)

Publication Number Publication Date
JPH03213685A true JPH03213685A (en) 1991-09-19

Family

ID=11688238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP826290A Pending JPH03213685A (en) 1990-01-19 1990-01-19 Multiple gear pump

Country Status (1)

Country Link
JP (1) JPH03213685A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009526915A (en) * 2006-02-01 2009-07-23 メッツォ ペーパー インコーポレイテッド Method of supplying chemicals or compounds in a fiber web machine and apparatus for carrying out the method
JPWO2014199489A1 (en) * 2013-06-13 2017-02-23 株式会社島津製作所 Gear pump or motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009526915A (en) * 2006-02-01 2009-07-23 メッツォ ペーパー インコーポレイテッド Method of supplying chemicals or compounds in a fiber web machine and apparatus for carrying out the method
JP4733749B2 (en) * 2006-02-01 2011-07-27 メッツォ ペーパー インコーポレイテッド Method of supplying chemicals or compounds in a fiber web machine and apparatus for carrying out the method
US8126583B2 (en) 2006-02-01 2012-02-28 Metso Paper, Inc. Method for supplying a chemical or chemical compound in a fibrous web machine and an apparatus for implementing the method
JPWO2014199489A1 (en) * 2013-06-13 2017-02-23 株式会社島津製作所 Gear pump or motor

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