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 flowInfo
- 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
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.
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) |
-
1977
- 1977-07-04 IT IT2537477A patent/IT1076085B/en active
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