IT1076085B - Positive displacement pump delivery control - holds inlet valve open during part of delivery stroke by adjustable element and using returning flow - Google Patents

Positive displacement pump delivery control - holds inlet valve open during part of delivery stroke by adjustable element and using returning flow

Info

Publication number
IT1076085B
IT1076085B IT2537477A IT2537477A IT1076085B IT 1076085 B IT1076085 B IT 1076085B IT 2537477 A IT2537477 A IT 2537477A IT 2537477 A IT2537477 A IT 2537477A IT 1076085 B IT1076085 B IT 1076085B
Authority
IT
Italy
Prior art keywords
inlet valve
positive displacement
displacement pump
open during
valve open
Prior art date
Application number
IT2537477A
Other languages
Italian (it)
Original Assignee
Akers Mek Verksted As
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 Akers Mek Verksted As filed Critical Akers Mek Verksted As
Priority to IT2537477A priority Critical patent/IT1076085B/en
Application granted granted Critical
Publication of IT1076085B publication Critical patent/IT1076085B/en

Links

Abstract

The method for regulating the delivery of a positive displacement pump with automatic inlet (5) and outlet valves (6) is based on keeping an inlet valve open during an adjustable part of the working stroke of the pump pistons (2). The amount of liquid flowing out through the open inlet valve during this stroke is used to operate a piston (14) or similar element which is connected with the valve such that the distance the piston (14) has to travel to close the valve is adjustable. This may be achieved by having the piston (14) slidable in a cylindrical bush (12) with perforated wall which is contained in the pump intake duct (9) such that the liquid flows through the perforation to the pump cylinder (1), a slide (13) being provided to shut off part of the perforation at will.
IT2537477A 1977-07-04 1977-07-04 Positive displacement pump delivery control - holds inlet valve open during part of delivery stroke by adjustable element and using returning flow IT1076085B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2537477A IT1076085B (en) 1977-07-04 1977-07-04 Positive displacement pump delivery control - holds inlet valve open during part of delivery stroke by adjustable element and using returning flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2537477A IT1076085B (en) 1977-07-04 1977-07-04 Positive displacement pump delivery control - holds inlet valve open during part of delivery stroke by adjustable element and using returning flow

Publications (1)

Publication Number Publication Date
IT1076085B true IT1076085B (en) 1985-04-22

Family

ID=11216502

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2537477A IT1076085B (en) 1977-07-04 1977-07-04 Positive displacement pump delivery control - holds inlet valve open during part of delivery stroke by adjustable element and using returning flow

Country Status (1)

Country Link
IT (1) IT1076085B (en)

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