POSITIVE DISPLACEMENT PUMP Russian patent published in 2024 - IPC F04C9/00 F04B43/12 

FIELD: pump building.

SUBSTANCE: invention relates to pump engineering and can be used for pumping mortar and other similar abrasive-containing suspensions. Positive displacement pump comprises a housing, on which two sections of hollow shells 2 and 3 are installed, which are made of flexible and resilient material. Each section is interconnected by one end with inlet valve 4 and the second end with outlet valve 5. On the housing in the support there is a rotor with two rollers 11 on pneumatic tires, which is kinematically connected to rotation drive 12. When the rotor rotates, the rollers roll over the flexible shells, deforming them, and creating an increased pressure in front of the rollers and a vacuum behind the rollers. Uniform supply of material under pressure through unloading hatch and supply of material under action of discharge into loading hatch is provided.

EFFECT: improving operating reliability of volumetric pump and enlarging operational capabilities.

1 cl, 2 dwg