Patent Application
20080095630
A blade wheel for a sewage pump in accordance with the present invention comprises a top plate and multiple curved blades radially attached to the top late. The top plate is adapted to perpendicularly combine with a main shaft of a motor and has a shaft hole with a slit at a center on the top plate. The multiple curved blades are integrally formed on a bottom face of the top plate and have at least three different heights. By attaching the curved blades in different heights, the precipitation can be sufficiently guided into a sewage pump for chopping and flung out of a sewage tank 4.
With reference to
The top plate 21 is a round board with a center and adapted to perpendicularly combine with a main shaft 311 on a motor 31 as shown in
The multiple curved blades 22 are integrally formed on a bottom face of the top plate 21 and have three different heights, wherein blades 22 indicated as a, b, f, and g are the shortest, blades 22 indicated as c, e, h, and j are medium, and blades 22 indicated as d and l are the highest. Moreover, the blades c, e, h, and j and blades d and i each have a slope 23 formed in unidirectional clockwise formation, i.e. the shortest blades has no slope. Preferably, the blades 22 are arranged in a certain sequence to make the edge line of the blade wheel as a smooth curved and thus create vortex to improve the guiding efficiency created by the arranged blades in different heights.
The blade wheel 2 is adapted to mount inside a blade chamber 321 at a lower base 32 of the sewage pump 3 as shown in
When the motor 31 in the sewage pump 3 actuates, the main shaft 311 drives the blade wheel 2 to rotate clockwise to generate vortex and thus to sock precipitation deposited in bottom of the sewage tank 4 into the blade chamber 321 of the lower base 32. The slopes 23 make edges of the blades 22 sharp to chop the precipitation. Then, the broken precipitation is flung out of the blade chamber 321 by centrifugal force created by rotation of the blades 22 and by high water pressure created by turbulence during rotation, wherein the turbulence is particularly generated by the curved blades 22 with different heights. The broken precipitation is then conducted out of the sewage tank 4 via the switch connector 324 and the conducting pipe 325.
According to above description, the blade wheel for a sewage pump in the present invention has the following advantages:
1. The blade wheel is substantially composed of at least three curved blades 22 in different heights and arranged in a radial arrangement so that the blade wheel 2 has sufficient guiding and chopping efficiency. After chopping, the precipitation is flung out of the lower base 32 of the sewage pump 3 by centrifugal force created by rotation of the blade wheel 2.
2. The blade wheel efficiently improves in chopping and flinging capabilities by modifying structure simply so that manufacturers can manufacture the blade wheel rapidly and efficiently and reduce cost to enhance utility thereof.
Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present invention of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts any be resorted to without departing from the spirit and scope of the invention.
