FIELD: hydraulic machine building; positive displacement pumps.
SUBSTANCE: housing of proposed pump is provided with additional working cylinder arranged between ring groove of housing and guide of rod opposite to working cylinder. Piston in additional cylinder has ring groove in which additional suction valve-piston seal is freely fitted between side walls with interference relative to surface of additional working cylinder, and outlet channels are made from side of housing ring groove. Additional valve-rod seal is fitted in ring groove of housing opposite to pressure valve-rod seal with interference relative to rod surface and with normalized pressing to side wall of arranged at side of additional working cylinder. Ring groove of housing communicating with pressure duct is made sectional. Space arranged between additional piston and rod guide communicates with suction duct through channels made in rod.
EFFECT: reduced irregularity of delivery, increased service life of pump.
3 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| POSITIVE DISPLACEMENT PUMP | 2004 |
|
RU2282058C2 |
| POSITIVE DISPALCEMENT PUMP | 2004 |
|
RU2282061C2 |
| POSINIVE DISPLACEMENT PUMP | 2004 |
|
RU2282059C2 |
| POSITIVE DISPLACEMENT PUMP | 2004 |
|
RU2282060C2 |
| POSITIVE-DISPLACEMENT PUMP | 0 |
|
SU1397618A2 |
| POSITIVE-DISPLACEMENT PUMP | 0 |
|
SU1379496A2 |
| POSITIVE-DISPLACEMENT PUMP | 0 |
|
SU1402711A2 |
| VOLUMETRIC DISPLACEMENT PUMP | 0 |
|
SU785543A1 |
| POSITIVE-DISPLACEMENT PUMP | 0 |
|
SU868114A1 |
| DISPLACEMENT PUMP | 0 |
|
SU1344937A2 |
