Hydrostatic pressure support for spherical pump rotor and spherical pump with same

A spherical pump having a hydrostatic pressure support, comprising:

• a cylinder body having a semi-spherical inner cavity;
• a cylinder cover having a semi-spherical inner cavity;
• a piston;
• a rotating disc;
• a main shaft;
• and
• a main shaft bracket;
• wherein the cylinder body is provided with a through hole communicated with an outside, and the through hole is configured to allow a rotating disc shaft to pass through;
• a lower end of the cylinder cover is fixedly connected to an upper end of the cylinder body to form a spherical inner cavity;
• an inner spherical surface of the cylinder cover is provided with a piston shaft hole, a waist-shaped inlet hole, and a waist-shaped outlet hole;
• the waist-shaped inlet hole and the waist-shaped outlet hole are arranged in an annular area perpendicular to an axis of the piston shaft hole;
• and the waist-shaped inlet hole is in communication with a suction port at an upper end of the cylinder cover, and the waist-shaped outlet hole is in communication with a discharge port at the upper end of the cylinder cover;
• the piston comprises a spherical top surface, two side surfaces at an angle, and a first pin seat;
• the first pin seat is provided at a lower portion of the two side surfaces;
• a piston shaft protrudes from a middle of the spherical top surface of the piston;
• an axis of the piston shaft passes through a sphere center of the spherical top surface of the piston;
• and the spherical top surface of the piston and the spherical inner cavity have the same sphere center, and the spherical top surface of the piston is in a sealing movable fit with the spherical inner cavity;
• an outer circumference between an upper portion and a lower end surface of the rotating disc is configured as a spherical surface;
• the spherical surface of the rotating disc and the spherical inner cavity have the same sphere center, and the spherical surface of the rotating disc is in a sealing movable fit with the spherical inner cavity;
• a second pin seat corresponding to the first pin seat is provided at the upper portion of the rotating disc;
• the rotating disc shaft protrudes from a center of a lower end of the rotating disc, and the rotating disc shaft passes through a sphere center of the spherical surface of the rotating disc;
• and a slipper is fixedly provided at an end of the rotating disc shaft;
• the main shaft is connected to a lower end of the cylinder body through the main shaft bracket;
• the main shaft bracket is fixedly connected to the lower end of the cylinder body, and is configured to provide support for rotation of the main shaft;
• and an upper end surface of the main shaft is provided with a sliding groove;
• and
• the axis of the piston shaft hole and an axis of the rotating disc shaft both pass through a sphere center of the spherical inner cavity;
• the axis of the piston shaft hole has an angle with respect to an axis of the main shaft;
• the second pin seat and the first pin seat are matched to form a cylindrical hinge;
• individual matching surfaces of the cylindrical hinge are in a sealing movable fit;
• the rotating disc shaft extends from the lower end of the cylinder body, and the slipper is inserted into the sliding groove at the upper end of the main shaft;
• two parallel sides of the slipper are respectively in a sliding fit with two sides of the sliding groove;
• the two parallel sides of the slipper are symmetrically arranged with respect to an axis of the rotating disc, and are parallel to an axis of the cylindrical hinge;
• when the main shaft rotates to drive the rotating disc and the piston, the slipper slides back and forth in the sliding groove, and the piston and the rotating disc swing in relation to each other;
• two working chambers with alternately-variable volumes are formed between an upper end surface of the rotating disc, the two side surfaces of the piston and the spherical inner cavity;
• the hydrostatic pressure support is arranged between each of the two parallel sides of the slipper and the sliding groove;
• the hydrostatic pressure support comprises a first liquid flow channel, a second liquid flow channel, and a plurality of pressure-bearing grooves;
• the first liquid flow channel and the second liquid flow channel are both arranged on the rotating disc;
• an inner surface of the two parallel sides of the slipper are respectively provided with each of the plurality of pressure-bearing grooves;
• the first liquid flow channel comprises a first inlet and a first outlet;
• the first inlet is communicated with one of the two working chambers;
• the second liquid flow channel comprises a second inlet and a second outlet;
• the second inlet is communicated with the other of the two working chambers;
• and the first outlet and the second outlet are respectively communicated with each of the plurality of pressure-bearing grooves provided on the inner surface of the two parallel sides of the slipper.