Drainage pump

Abstract

The invention discloses a drainage pump, which comprises a motor, an impeller and a pump body, wherein a front end cover of the motor and the pump body form a pump chamber; the front end cover of the motor is matched with a back end cover of the motor to form a motor cavity; the front end cover of the motor is provided with a rotating hole for communicating the pump chamber with the motor cavity;the upper part of a motor shaft is rotationally connected with the back end cover of the motor; the middle part of the motor shaft passes through the rotating hole, and is rotationally connected withthe front end cover of the motor; and the lower part of the motor shaft is connected with the impeller in the pump chamber. In the disclosed drainage pump, the motor shaft can reach the pump chamber by passing through the front end cover and is connected with the impeller, so that the length of the motor shaft is greatly reduced; the deflection deformation of the motor shaft can be reduced, the offset of the impeller is reduced, and preconditions are provided for the reduction in vibration; and convenience can be provided for the installation of the drainage pump, so that the assembling accuracy of the drainage pump is enhanced, and vibration and working noise produced in the running of the drainage pump are reduced. Meanwhile, compared with the conventional structure, the drainage pump provided by the invention has a compact structure and has an entire weight which can be reduced by about 40 percent.

Description

technical field [0001] The invention relates to a pumping technology, in particular to a drainage pump. Background technique [0002] For ceiling-mounted air conditioners, how to drain the condensed water generated by the evaporator to the outside is an important issue for this type of air conditioner; therefore, ceiling-mounted air conditioners are generally equipped with a drain pump and a water tray; the water tray is used to collect condensation Water, the drain pump sucks the condensed water collected by the water tray through the suction port, and discharges it to the outside or other predetermined locations through the predetermined pipeline. [0003] The drainage pump mainly consists of two parts: the pump body part and the motor part. The pump body part generally includes a pump body shell composed of a lower shell and an upper shell. A pump chamber is formed in the pump body shell, and a pump chamber for accommodating the impeller is formed in the pump chamber she...

AI Technical Summary

Problems solved by technology

[0006] Although the technical solutions provided by the prior art can reduce vibration and noise to a certain extent, the actual effect is not ideal

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