Double-suction sewage pump

Abstract

The invention discloses a double-suction sewage pump. The double-suction sewage pump comprises a double-suction pump body, a double-suction pump cover and a double-suction sewage pump impeller, a water pump water inlet and a water pump water outlet connected with a water inlet pipe and a water outlet pipe are formed in the pump body, the double-suction pump body and a double-suction pump cover areconnected through a middle opening face, the two sides of an impeller of the double-suction sewage pump are provided with two runners, the two runners are in central symmetry about the axis line, onerunner is obtained through center rotation of the other runner around the axis line by 180 degrees, the runners on the two sides are symmetrically distributed in a back-to-back manner, and outside acertain impeller outer diameter, two runners are combined. During mounting and maintaining, only the pump cover needs to be opened, a rotor part is taken out, the replaceable impeller is obtained, a pipeline and a driving motor do not need to be detached, mounting and maintaining are quite convenient, the impeller of the double-suction structure is adopted, the specific speed of the sewage pump can be reduced, and the water pump efficiency is improved; the two sides of the double-suction structure impeller are in structural symmetry, axial force on the two sides is offset, and the problem thatthe axial force of the single-suction sewage pump is too large can be effectively solved.

Description

technical field [0001] The invention belongs to the field of water pumps, in particular to a double-suction sewage pump. Background technique [0002] Sewage pumps are mainly used to pump domestic sewage, industrial wastewater and liquids containing solid particles and fibers, and are widely used in municipal, light industry, chemical, construction, mining and other industries. Sewage pumps are generally single-suction structures, and there are two impeller structures, single-channel and double-channel. For centrifugal pumps, the efficiency is not high if the specific speed is too small or too large; for sewage pumps, the head is generally not high, and the specific speed is large, so the efficiency is not high. In addition, there is a large axial force in the single-suction structure, which seriously affects the mechanical properties of the water pump and the life of the parts, and also limits its application. Contents of the invention [0003] Aiming at the deficiencie...

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Problems solved by technology

[0003] Aiming at the deficiencies in the existing above-mentioned technologies, the present invention aims to provide a double-suction sewage pump, which can greatly improve the efficiency of the sewage pump, and at the same time solve the problem of excessive axial force of the single-suction pump, and has better mechanical properties and assembly Structural advantages of easy disassembly

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