FIELD: engines and pumps.
SUBSTANCE: pump (1) is made of at least two parts (3, 5). The first part (3) comprises a body (7), at least one screw system (4) arranged in the body (7), behind which an injection zone (15) is located, at least one outlet opening (13). The second part (5) has at least one lower pressure chamber (16) before the system (4), at least one inlet opening (14) for transported medium in the chamber (16). The parts (3, 5) are pivotally connected to each other to have at least two different relative positions. One or more safety means made in the part (5) area functionally connected the chamber (16) and the zone (15) to set predetermined maximum pressure level in the zone (15) in case of exceeding the predetermined pressure level.
EFFECT: invention is aimed at development of screw pump providing increased flexibility with respect to its installation.
17 cl 9 dwg
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