Water-cooled low-noise pump

Abstract

The invention relates to a water-cooled low-noise pump. A pump cover is arranged on a pump body and is connected with a lower end cover arranged at the upper end. A motor casing is arranged on the lower end cover. An upper end cover is arranged on the motor casing. An integrated shaft is arranged in the middle of the pump body. An impeller is mounted at one end of the integrated shaft, and the other end of the integrated shaft is connected with the upper end cover. A bearing cooling cavity is formed by the upper end cover and an end cover. A wiring board is arranged in the bearing cooling cavity. A motor stator / rotor is arranged between the upper end cover and the lower end cover. A cooling jacket is arranged on the outer surface of the motor casing. Pipelines are arranged at the water inlet flange end and the water outlet flange end and are connected with the cooling jacket. A motor is cooled through self-circulating water of the pump instead of a fan; the cooling effect is good, noise is low, and the service life of the motor is prolonged; the occupied area is greatly reduced; investment of capital construction is saved; the motor and the pump are coaxial, and thus an intermediate connecting structure is simplified; in addition, the impeller has high dynamitic and static balance, in this way, operation is stable and reliable, vibration is small, and noise is low; installation is convenient, leakage is avoided, and applicability is high.

Description

technical field [0001] The invention relates to a water-cooled low-noise pump. Background technique [0002] The water-cooled low-noise pump is used to transport clean water or other liquids with similar physical and chemical properties to clean water, and the medium temperature is below 80°C. It is suitable for industrial and urban water supply and drainage, pressurized water delivery for high-rise buildings, fire pressurization, long-distance water delivery, etc. Existing pumps use shaft cooling and motor casing cooling to reduce the heat emitted by the motor. Although the cooling effect is good, the mechanical seal of the water pump and the motor bearing are vulnerable parts. Once damaged, the parts of the pump and motor must be replaced. All disassembled and replaced will bring great difficulties to maintenance. At the same time, the existing ones will generate greater noise during cooling, the motor will have a short service life, occupy a large area, and increase cost...

AI Technical Summary

Problems solved by technology

Existing pumps use shaft cooling and motor casing cooling to reduce the heat emitted by the motor. Although the cooling effect is good, the mechanical seal of the water pump and the motor bearing are vulnerable parts. Once damaged, the parts of the pump and motor must be replaced. All disassembled and replaced will bring great difficulties to maintenance. At the same time, the existing ones will generate greater noise during cooling, the motor will have a short service life, occupy a large area, and increase costs. Especially during operation, the operation will be unstable. Disadvantages such as inconvenient installation and poor sealing performance

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