External loop type rotary piston pump

Abstract

The invention relates to an outer circulation type rotary piston pump, belonging to the field of displacement pumps, which includes a pump body processed with pump feet and liquid inlet and outlet ports, and is characterized in that more than 3 sets of pump feet are processed on the pump body, each The outer end surfaces of the sets of pump legs form a plane structure, and the planes formed by each group of pump legs intersect to form a regular polygon structure, and each group of pump legs is located at the same position on each outer surface of the pump body. After adopting the above-mentioned structure, the present invention can rotate and install in multiple directions such as 90°, 180°, 270° or 360° radially along the axis without changing the original installation space of the pump body. Radially adjust the position of the inlet and outlet of the pump body, which is convenient for construction and installation.

Description

technical field [0001] The invention belongs to the field of displacement pumps, in particular to an outer circulation type rotary piston pump. Background technique [0002] In the various types of positive displacement pumps in the prior art, the pump body is mostly irregular in structure, and the pump feet for fixing are usually processed on the specially designed fixed end surface of the pump body, which limits the installation position of the pump body. Since the position of the liquid inlet and outlet on the pump body is fixed, it is impossible to conveniently rotate the axial direction at any time according to the change of the construction site to adjust the orientation of the pump body inlet and outlet, and the liquid port. Only by installing reversing pipes and other structural forms To realize the change of direction of the inlet and outlet, and the construction site is often difficult to erect redundant pipelines due to space constraints, resulting in greater limi...

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Problems solved by technology

[0002] In the various types of positive displacement pumps in the prior art, the pump body is mostly irregular in structure, and the pump feet for fixing are usually processed on the specially designed fixed end surface of the pump body, which limits the installation position of the pump body. Since the position of the liquid inlet and outlet on the pump body is fixed, it is impossible to conveniently rotate the axial direction at any time according to the change of the construction site to adjust the orientation of the pump body inlet and outlet, and the liquid port. Only by installing reversing pipes and other structural forms To achieve the direction change of the inlet and outlet, and the construction site is often difficult to erect redundant pipelines due to space constraints, resulting in greater limitations in the use of pumps

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