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1. A roundel structure for five-compressing-chamber diaphragm pump comprises a motor with an output shaft, a motor upper chassis, a wobble plate with integral protruding cam-lobed shaft, an eccentric roundel mount, a pump head body, a diaphragm membrane, five pumping pistons, a piston valvular assembly and a pump head cover, wherein:
Said motor upper chassis includes a bearing to be run through by the output shaft of the motor, an upper annular rib ring with several fastening bores disposed therein in circumferential rim evenly; Said wobble plate with integral protruding cam-lobed shaft includes a shaft coupling hole for being run through by the corresponding motor output shaft of the motor; Said eccentric roundel mount includes a central bearing at the bottom thereof for corresponding wobble plate with integral protruding cam-lobed shaft, five cylindrical eccentric roundels disposed thereon in circumferential location evenly such that each cylindrical eccentric roundel has a horizontal top face, a female-threaded bore and an annular positioning dent formed on the top face thereof respectively in horizontal flush; Said pump head body, which covers on the upper annular rib ring of the motor upper chassis to encompass the wobble plate with integral protruding cam-lobed shaft and eccentric roundel mount therein, includes five operating holes disposed therein in circumferential location evenly such that each operating hole has inner diameter slightly bigger than outer diameter of the cylindrical eccentric roundel in the eccentric roundel mount for receiving each corresponding cylindrical eccentric roundel respectively, a lower annular flange formed thereunder for mating with corresponding upper annular rib ring of the motor upper chassis, several fastening bores disposed thereat in circumferential location evenly; Said diaphragm membrane, which is extrude-molded by semi-rigid elastic material and to be placed on the pump head body, includes a pair of parallel outer raised brim and inner raised brim as well as five evenly spaced radial raised partition ribs such that each end of radial raised partition rib connects with the inner raised brim, five equivalent piston acting zones are formed and partitioned by the radial raised partition ribs, wherein each piston acting zone has an acting zone hole created therein in correspondence with each female-threaded bore in the cylindrical eccentric roundel of the eccentric roundel mount respectively, and an annular positioning protrusion for each acting zone hole is formed at the bottom side of the diaphragm membrane; Each said pumping piston, which is respectively disposed in each corresponding piston acting zones of the diaphragm membrane, has a tiered hole run through thereof, after having each annular positioning protrusion in the diaphragm membrane inserted into each corresponding annular positioning dent in the cylindrical eccentric roundel of the eccentric roundel mount, by running fastening screw through the tiered hole of each pumping piston and the acting zone hole of each corresponding piston acting zone in the diaphragm membrane, the diaphragm membrane and five pumping pistons can be securely screwed into each female-threaded bore of corresponding five cylindrical eccentric roundels in the eccentric roundel mount; Said piston valvular assembly, which suitably covers on the diaphragm membrane, includes a downward outlet raised brim to insert between the outer raised brim and inner raised brim in the diaphragm membrane, a central dish-shaped round outlet mount having a central positioning bore with five equivalent sectors each of which contains multiple evenly circum-located outlet ports, a T-shaped plastic anti-backflow valve with a central positioning shank, and five circumjacent inlet mounts, each of which includes multiple evenly circum-located inlet ports and a inverted central piston disk respectively so that each piston disk serves as a valve for each corresponding group of multiple inlet ports, wherein the central positioning shank of the plastic anti-backflow valve mates with the central positioning bore of the central outlet mount such that multiple outlet ports in the central round outlet mount are communicable with five inlet mounts, and a hermetical preliminary-compressing chamber is formed between each inlet mount and corresponding piston acting zone in the diaphragm membrane upon the downward outlet raised brim having inserted between the outer raised brim and inner raised brim in the diaphragm membrane such that one end of each preliminary-compressing chamber is communicable with each corresponding inlet ports; Said pump head cover, which covers on the pump head body to encompass the piston valvular assembly, pumping piston and diaphragm membrane therein, includes a water inlet orifice, a water outlet orifice, and several fastening bores while a tiered rim and an annular rib ring are disposed in the bottom inside of said pump head cover such that the outer brim for the assembly of diaphragm membrane and piston valvular assembly can hermetically attach on the tiered rim, wherein a high-compressing chamber is configured between cavity formed by the inside wall of the annular rib ring and the central outlet mount of the piston valvular assembly upon having the bottom of the annular rib ring closely covered on the brim of the central outlet mount; and Characteristically, a sloped top ring is created from the annular positioning dent to the vertical flank in each cylindrical eccentric roundel of the eccentric roundel mount. |
