Centrifugal pump with swirl sprayer engine directly connected with high-speed function vane wheel and even-spinning labyrinth

Abstract

The invention discloses a centrifugal pump with a swirl sprayer engine directly connected with a high-speed function vane wheel and an even-spinning labyrinth. Rotation inertia connected with a driving shaft is improved; a vibration attenuation and noise reduction protection cover is adopted; a four-stroke or two-stroke engine is directly connected with a vane wheel of which two ends are planes and an inner sunken bottom is a parabolic function surface; two sides of a vane of the vane wheel are included angle function surfaces, the inner parts of the two sides of the vane are thin, the outer parts of the two sides of the vane are thick, and end face labyrinth sealing is realized on the back face of the vane wheel; the bidirectional horizontal even-spinning labyrinth sealing is used, so that the sealing friction loss is reduced; a shell with an eccentric outlet and northern-hemisphere anticlockwise streamline ribs is used, so that the friction loss is reduced; a volute with an outlet chamfer and a northern-hemisphere anticlockwise non-archimedes function line is used, so that the stroke loss is reduced; and ribs or vanes are arranged on the back face of the vane wheel, so that the pressure on the back face of the vane wheel is reduced; or planar spiral slots with opposite directions are respectively formed on the surface of the back face of the vane wheel and the inner wall surface of the vertical shell close to the vane wheel. The centrifugal pump has two functions of end face labyrinth sealing and axial balance.

Description

Technical field [0001] The invention relates to a centrifugal pump used for pumping clean water in non-electric places such as fields, construction sites, gardens, parks and roadsides. It belongs to the category of water pumps for general mechanical products, especially a driving machine, such as an engine, especially containing internal A small four-stroke single-cylinder air-cooled gasoline engine type 139F with a spiral vortex nozzle carburetor, or a small two-stroke single-cylinder air-cooled gasoline engine type 1E34 with an internal spiral vortex nozzle and an improved multiple scavenging port The impeller driven by the high-speed link contains a disc plane at both ends, a parabolic function surface at the inner concave bottom, an involute function surface at both sides of the blade, and an impeller with a thin inside and a thick outside on both sides of the blade, and a maze with two-way left and right rotation A sealed, centrifugal pump with an eccentric outlet and a cas...

AI Technical Summary

Problems solved by technology

Traditional direct-coupled water pumps often use compression spring single-end seals, and their axial pressure is relatively large

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