A type of elliptical double-suction four-channel pump impeller

Abstract

The invention belongs to the field of fluid machinery, and particularly relates to a similarly oval double-suction four-flow-channel pump impeller. The whole impeller is similarly oval, and is provided with a front cover plate, a rear cover plate, a middle partition, four screw type thin-walled flow channel blades and an axle center, wherein two inlets are respectively formed in two sides of the axle center; the two cover plates, the middle partition and the four screw type thin-walled flow channel blades jointly form four flow channels, the four flow channels are separated into front double flow channels and rear double flow channels by the middle partition, outlets of the flow channels of the impeller are double-side wide outlets, outlet sides are large-V-shaped, and a V-shaped vertex of each outlet is positioned on a center line of the corresponding flow channel. Blades of the impeller are thin, the weight of the impeller is light, the outlets are folded-V-shaped and are wide, the structure is simple, and the similarly oval double-suction four-flow-channel pump impeller has good passing ability to impurities such as various large particles, long fibers and household garbage, and is high in efficiency, low in noise and stable and reliable in running. The similarly oval double-suction four-flow-channel pump impeller which is mounted in a sewage pump can be used for treating domestic sewage, municipal sewage, industrial sewage and the like in a centralized manner, so that the sewage can reach the standard when drained.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to an elliptical double-suction four-channel pump impeller. Background technique [0002] The centralized treatment and up-to-standard discharge of domestic, municipal, industrial and other sewage need to use submersible sewage pumps. When pumping sewage and sewage medium, the medium is often mixed with various large particles, long fibers, domestic garbage and other impurities. However, due to design limitations of traditional double-channel pump products, the pump is prone to blockage during sewage transportation, which affects the passing performance and operating efficiency of the pump, and reduces the reliability and service life of the pump. Moreover, the pump impeller needs to be shut down for maintenance and processing when being wound, which seriously affects work efficiency and hinders and delays the development of industrial production and environmental protection work. Th...

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Problems solved by technology

[0003] The double-channel pump is a curved flow channel from the impeller inlet to the impeller outlet, which is suitable for transporting fluid media containing large particles and fibrous substances, but usually the impeller is very thick, twice the weight of the general impeller, which not only wastes materials, but also increases The motion load, coupled with the poor symmetry of the impeller, and the lack of balance of the impeller during operation will result in relatively large noise and vibration during operation, which will cause destructive effects on the bearings on the water pump, and even cause the water pump to fail to work in severe cases. Frequent maintenance of water pumps or replacement of new pump products

[0004] After retrieval, the published patent "a semi-open impeller non-clogging cutting pump" application number CN201120437806.9, which installs a cutter disc for chopping debris at the inlet of the semi-open impeller non-clogging pump, for Cutting impurities such as large particles and long fibers will make the pump structure more complicated and the cost will increase, and because the cutting disc device needs to consume a certain amount of power, it will cause the efficiency, lift and flow rate of the pump to decrease; the published patent "a spiral Cutting pump" application number CN201120368996.3, which installs a spiral cutter on the impeller shaft, and fixes a diversion cutting cylinder at the water inlet of the pump body, and the diversion cutting cylinder is provided with passing holes for conveying media and sundries. When the pump is conveying solid particle media, it will make the pump not easy to block and wear to a certain extent, but this device makes the structure of the pump complex and increases the cost. Cause the blockage of the diversion cutting cylinder, affecting the passing performance and operating efficiency of the pump

[0005] After searching, there is no public report on patents or articles on the quasi-elliptic double-suction four-channel pump impeller

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