FIELD: engines and pumps.
SUBSTANCE: invention relates to a multistage rotary pump unit with at least two impellers 2, 6. Note here that there are two sets of impellers 4, 8 made one after another in the flow direction each with at least one impeller 2, 6. The first said set 4 has a return channel 24 to communicate the outlet side of the said set 4 with its inlet side.
EFFECT: self-priming rotary pump unit.
14 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MULTI-STAGE SELF-SUCTION ROTARY PUMP UNIT | 2014 |
|
RU2636288C2 |
| PUMP UNIT | 2017 |
|
RU2681112C1 |
| SELF-SUCTION PUMP UNIT | 0 |
|
SU1129414A1 |
| CENTRIFUGAL PUMPING UNIT | 2016 |
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RU2641328C1 |
| SELF-PRIMING DEVICE FOR ROTODYNAMIC PUMP | 2015 |
|
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| SELF-PRIMING CENTRIFUGAL PUMP | 2007 |
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RU2351805C1 |
| SUBMERSIBLE PUMPING UNIT | 2011 |
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| VERTICAL OIL ELECTRIC PUMP UNIT (VERSIONS), AND SHAFT LINE OF VERTICAL ELECTRIC PUMP UNIT (VERSIONS) | 2011 |
|
RU2468255C1 |
| MULTISTAGE CENTRIFUGAL ELECTRIC PUMP | 0 |
|
SU1758289A1 |
| METHOD FOR PUMPING FLUID INTO INJECTION WELL | 2003 |
|
RU2233972C1 |
