High-performance energy-saving circulating variable-frequency water pump

Abstract

The invention relates to the technical field of water pumps, in particular to a high-performance energy-saving circulating variable-frequency water pump which comprises a water pump variable-frequency motor, one end of the water pump variable-frequency motor is in transmission connection with a centrifugal water pump body, the surface of the centrifugal water pump body fixedly communicates with a water pumping pipe, and the side edge surface of the centrifugal water pump body fixedly communicates with a water pump water outlet pipe. A movable sealing pipe is movably installed at the end of the water pump water outlet pipe, the water pump water outlet pipe and the movable sealing pipe are coaxially arranged, and driving rotating pieces are rotationally arranged in the water pump water outlet pipe and the movable sealing pipe. The driving rotating piece can drive the movable sealing pipe to axially move, so that a gap exists between the movable sealing pipe and the water pump water outlet pipe at the beginning, the gap can be automatically sealed after the water pump water outlet pipe sprays water, and the moment that the centrifugal water pump body drives the water pump water outlet pipe to spray water is avoided; when the load of the water outlet is too large or held, the pressure load of the water pump variable frequency motor is too large, so that the motor is prevented from being damaged, and the power grid current is prevented from being interfered.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a high-performance energy-saving circulating frequency conversion water pump. Background technique [0002] A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions, and suspoemulsions. Centrifugal pump and liquid metal, etc., centrifugal pump is a kind of water pump. The centrifugal pump is more efficient driven by high-performance variable frequency motor, and can be controlled by frequency conversion to save energy. When the water outlet of the water pump is blocked or has a high-voltage load, it will further increase the difficulty of starting the motor water pump, resulting in shortened motor life, or the water pump cannot operate normally. Con...

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Problems solved by technology

[0002] A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions, and suspoemulsions. Centrifugal pump and liquid metal, etc., centrifugal pump is a kind of water pump. The centrifugal pump is more efficient driven by high-performance variable frequency motor, and can be controlled by frequency conversion to save energy. When the water outlet of the water pump is blocked or has a high-voltage load, it will further increase the difficulty of starting the motor water pump, resulting in shortened motor life, or the water pump cannot operate normally, etc.

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