Waterproof device for pump motor

Abstract

The invention provides a waterproof device for a pump motor, belonging to the technical field of water pumps. The problem that the sealing effect of the existing pump motor is not good can be solved. In the waterproof device for the pump motor, the pump motor comprises a cylindrical stator sleeve and a rotating shaft; a bearing base is arranged at the lower part of a stator sleeve cavity; the rotating shaft sequentially passes through the bearing base and the stator sleeve; an oil chamber is formed between the lower end face of the bearing base and the stator sleeve; a first framework oil seal is arranged between the bearing base and the rotating shaft; and a second framework oil seal is arranged between the lower end of the stator sleeve and the rotating shaft. The waterproof device for the pump motor has the better sealing effect.

Description

technical field [0001] The invention belongs to the technical field of water pumps, and relates to a waterproof device, in particular to a waterproof device for a pump motor. Background technique [0002] Water pump is a general-purpose electromechanical product, which is widely used in various production fields. At present, various water pumps with different sizes, specifications and models emerge in an endless stream. They are widely used and mature power equipment. For the liquid pump that constitutes the main part of the submersible pump, it is irrelevant, and the main problem is: once the leaked liquid accumulates inside the water pump, after invading the motor of the water pump, it will Caused damage to the motor, resulting in shutdown of the pump. [0003] For example, a double seal structure of a submersible sewage pump disclosed in Chinese patent literature (application number: 201110077623.5) includes a seal seat, a pump shaft, a mechanical seal and a water throw...

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