FIELD: motors and pumps.
SUBSTANCE: group of inventions refers to centrifugal pump (7) with one or more pump stages. Pump (7) comprises pressure-controlled valve (15) to maintain self-suction. Valve (15) comprises prestressed leaf spring (17) and valve seat (18). Leaf spring (17) has an open position and a closed position, and in the open position, leaf spring (17) is removed from valve seat (18), and in the closed position, leaf spring (17) closes valve seat (18). Leaf spring (17) and valve seat (18) are installed with a soft cover.
EFFECT: inventions are directed to the creation of a self-priming centrifugal pump with a strong and cheap pressure controlled valve to maintain self-suction, not emitting the clap sound during its operation.
13 cl, 9 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CENTRIFUGAL PUMP | 2018 |
|
RU2683062C1 |
| MULTI-STAGE SELF-SUCTION ROTARY PUMP UNIT | 2014 |
|
RU2636288C2 |
| NON-RETURN VALVE | 2016 |
|
RU2667862C2 |
| SELF-SUCTION PUMP UNIT | 0 |
|
SU1129414A1 |
| AUTOMATIC PUMP | 2021 |
|
RU2786289C1 |
| FILLING DEVICE FOR RELATIVELY VOLATILE AUTOMOBILE FUEL | 1995 |
|
RU2155278C2 |
| SELF-SUCTION CENTRIFUGAL PUMP | 0 |
|
SU1002674A1 |
| SELF-PRIMING CENTRIFUGAL PUMP | 0 |
|
SU1147852A1 |
| CNTRIFUGAL VALVE-TYPE SELF-PUMPING RECIRCULATION PUMP | 0 |
|
SU920264A1 |
| 0 |
|
SU222171A1 |
