FIELD: pumps building.
SUBSTANCE: invention relates to rotary plate pumps and can be used for oil production from well. Proposed oil pump comprises housing 1 with cavity with inlet and discharge branch pipes, cylindrical rotor 2 with radial grooves 3 accommodating working chambers 4. Rotor 2 in housing 1 is installed eccentrically. Plates 4 are equipped with inserts 5 from antifriction material, in which there are cylindrical rollers 6 in contact with inner surface of housing 1. Guide inserts 9 for plates 4 are installed in slots 3. Inserts 9 are made of wear-resistant material. Rollers 6 are made from material with lower hardness compared to material of inner surface of housing 1.
EFFECT: invention is aimed at improvement of reliability, increase of overhaul cycle and efficiency of a plate pump.
1 cl, 2 dwg
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