JPS6319086U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing a positive displacement rotary pump according to the present invention, Fig. 2 is a half sectional view of the positive displacement rotary pump according to the present invention, and Fig. 3 a to d are FIG. 6 is an explanatory diagram showing a state in which the cross-sectional area of the suction side end of the working chamber changes. 1... Positive displacement rotary pump, 2, 3, 4... Rotor, 5, 6, 7... Rotating shaft, 8... Casing,
9, 10... Front and rear end plates, 11... Working chamber, 12...
...Suction pipe, 13...Discharge pipe, 14, 15, 16...
...Pinion, 17...Ring gear.

Claims (1)

[Claims for Utility Model Registration] At least three rotors whose cross-sectional shape in a plane perpendicular to the rotation axis is defined by three convex curved sides each having the same radius of curvature and length; The rotational axes of the three rotors are arranged at the vertices of a triangle and accommodated in a parallel and rotatable manner, and a casing defines a main working chamber between the rotors, and is capable of communicating with the main working chamber. a suction pipe protruding from one end of the casing; a discharge port opening at the other end of the casing so as to be able to communicate with the main working chamber; a pinion coupled to an end of the rotating shaft of the rotor, and the suction pipe protruding from one end of the casing; a gear rotatably supported by the pipe and meshing with the pinion;
A positive displacement rotary pump comprising: an interlocking mechanism that interlocks the rotors so that they rotate synchronously while maintaining the same phase with each other;