FIELD: mechanical engineering; pumps.
SUBSTANCE: proposed pump can be used as working member for hydraulic cutters with idling stroke when moving cutter to object and cutting mode requiring high pressure of working medium. Muscle-driven pump has working cylinder with telescopically arranged plunger and piston, suction and delivery check valves, plunger and piston pull-back spring. Plunger and piston are connected by spring which determines pressure of changing over from one stage of volumetric delivery to the other.
EFFECT: improved reliability of pump.
1 dwg
| Title | Year | Author | Number | 
|---|---|---|---|
| HAND-DRIVEN PUMP | 0 | 
 | SU1160098A1 | 
| PUMP WITH MUSCULAR DRIVE | 0 | 
 | SU1090911A1 | 
| PUMP | 0 | 
 | SU1731983A1 | 
| PUMP WITH MUSCULAR DRIVE OF OVANDER'S SYSTEM (VERSIONS) | 2009 | 
 | RU2384736C1 | 
| MUSCLE-OPERATED PUMP | 1991 | 
 | RU2031243C1 | 
| SELF-CONTAINED HYDRAULIC DRIVE- ELECTROHYDRAULIC SERVO UNIT MODULE | 2004 | 
 | RU2261195C1 | 
| SELF-CONTAINED HYDRAULIC DRIVE-ACTUATOR ELECTROHYDRAULIC UNIT | 2003 | 
 | RU2262625C2 | 
| DOUBLE-ACTION PUMPING SYSTEM WITH HYDRAULIC DRIVE FOR EXTRACTION OF FLUIDS FROM INCLINED WELL | 2017 | 
 | RU2765527C2 | 
| BACKED-UP ELECTROHYDRAULIC DRIVE | 2002 | 
 | RU2237826C2 | 
| COMBINATION DRIVE | 2002 | 
 | RU2235661C2 | 
Authors
Dates
2005-10-10—Published
2003-10-15—Filed