Direct-current brushless shaftless frequency conversion wave making pump

Abstract

The invention provides a direct-current brushless shaftless frequency conversion wave making pump. The direct-current brushless shaftless frequency conversion wave making pump comprises a hollow front end cover, a hollow back sand separating cover and a motor arranged between the front end cover and the back sand separating cover; the motor comprises a motor shell and an impeller permanent magnet rotor, the motor shell is provided with a motor shell inner wall through hole in the axial direction, the impeller permanent magnet rotor is rotationally arranged in the motor shell inner wall through hole, the impeller permanent magnet rotor is provided with a rotor inner wall through hole in the axial direction, a water way for water flow to pass through is formed by hollow cavities of the front end cover and the back sand separating cover and the rotor inner wall through hole, and blades for driving flowing of the water flow are arranged in the rotor inner wall through hole in the circumferential direction; under driving of the blades, water in a fish tank continuously passes through the water way formed by the hollow cavity of the back sand separating cover, the rotor inner wall through hole and the hollow cavity of the front end cover, and therefore water in the fish tank sufficiently flows; and in addition, as a motor center shaft is not adopted in the structure, in the working process, vibration is small, the service life is long, generated noise is small, and the pump is silent relatively.

Description

【Technical field】 [0001] The invention relates to the field of wave-making pumps, in particular to a DC brushless shaftless frequency-variable wave-making pump. 【Background technique】 [0002] Wave pumps are generally used in fish tanks where the impeller is used to stir the water to make the water flow fully. However, most of the wave pumps on the market use the central shaft of the motor to connect the impeller to the motor. Under the action, the central shaft of the motor is prone to vibration, resulting in noise. 【Content of invention】 [0003] The technical problem to be solved by the present invention is to provide a DC brushless shaftless frequency conversion wave-making pump with no central shaft, low vibration and quiet noise. [0004] The purpose of the present invention is achieved like this: [0005] A DC brushless shaftless variable-frequency wave-making pump, comprising a hollow front cover, a hollow rear sand-separation cover, and a motor arranged between ...

AI Technical Summary

Problems solved by technology

[0002] Wave pumps are generally used in fish tanks where the impeller is used to stir the water to make the water flow fully. However, most of the wave pumps on the market use the central shaft of the motor to connect the impeller to the motor. Under the action, the central shaft of the motor is prone to vibration, resulting in noise

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