Energy-saving and low-noise centrifugal pump

Abstract

The invention relates to an energy-saving and low-noise centrifugal pump, adopting a water cooling motor. The motor of the centrifugal pump is arranged in a seal structure under an impeller set and a pumping chamber; a motor shaft is rigidly connected with a pump shaft of the impeller set by a coupling. A pump inlet at the lower part of the centrifugal pump is communicated with a pump outlet at the upper part of the centrifugal pump via an outer barrel channel outside of the seal structure of the motor, thus forming a fluid pressurized channel. The coupling is arranged in a closed structure between the seal structure of the motor and the pumping chamber of the impeller set, and a mechanical seal is arranged between the closed structure and the pressurized- water champ of the impeller set. According to the invention, the structure of the centrifugal pump takes consideration of both the sealing and the heat radiation of the motor, provides convenience for maintenance, improves operating efficiency of the motor and reduces operating noise of an assembling unit.

Description

technical field [0001] The invention relates to the related technical field of a centrifugal pump, in particular to an energy-saving and low-noise water-cooled motor centrifugal pump. Background technique [0002] At present, the pressurized pumps used for domestic water supply in the market generally have excessive noise, large vibration, and very low efficiency of the pump, which seriously affects people's normal working and living environment and physical health. [0003] In view of the above reasons, it is obvious that it is not feasible for the motor to cool down by fan blades and reduce noise at the same time. However, some manufacturers also use water cooling, generally by cooling the motor housing a, the upper bearing housing b and the lower bearing housing c such as figure 1 As shown, although the preliminary effect can be achieved, it brings great difficulty to the sealing of the motor. If it is not very good, the motor leaks and burns the motor. At the same time,...

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Problems solved by technology

[0004] In view of the above defects, the purpose of the present invention is to provide an energy-saving and low-noise centrifugal pump to solve the technical problem that the traditional centrifugal pump cannot take into account the sealing and heat dissipation of the motor, and at the same time provide convenience for maintenance, improve the working efficiency of the motor and reduce the operation of the unit. noise

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