Portable electromagnetic direct driven magnetic stirrer

Abstract

The invention provides a portable electromagnetic direct driven magnetic stirrer which comprises a shell, a panel, a multi-pole driving electromagnet, an upper magnet exciting coil and a lower magnet exciting coil wound on an iron core column, and as well as a control circuit and a storage battery pack in the shell. The portable electromagnetic direct driven magnetic stirrer is characterized in that as the electromagnet is adopted to generate a rotational magnetic field to directly drive a stirrer in fluid in a container to perform circumferential circulating motion, the middle steps are reduced, and the conversion efficiency is enhanced; and meanwhile as the electromagnet can obtain a magnetic field strength larger than that of a permanent magnet by adjusting the voltage and the current, the stirring moment is greatly improved, and the adaptability is stronger; as mechanical motion of a motor is canceled, not only is the noise when the motor operates eliminated, but also the fault rate is reduced; in a laboratory, alternative-current is adopted to automatically charge the storage battery pack, and when going out, storage battery pack power supply is automatically adopted, so that portable electromagnetic direct driven magnetic stirrer is convenient to be used in on-site analysis.

Description

technical field [0001] The invention relates to a stirring device, in particular to a portable electromagnet directly driven magnetic stirrer. Background technique [0002] The magnetic stirrer is suitable for stirring liquids or solid-liquid mixtures with low viscosity. When in use, put the stirrer into the liquid in the container. When a rotating magnetic field is generated under the panel, it will drive the stirrer to move in a circular motion to stir the liquid. the goal of. It is a liquid stirring device widely used in the chemical, medical, biochemical laboratories, analysis rooms, biological, genetic, pharmaceutical, environmental protection laboratories, and laboratories of food, epidemic prevention, medical and other scientific research departments of the school. [0003] The magnetic stirrer currently used includes a base, a control circuit, a panel, a motor and a permanent magnet. Its working principle is that the motor drives the permanent magnet to rotate to ge...

AI Technical Summary

Problems solved by technology

[0003] The magnetic stirrer currently used includes a base, a control circuit, a panel, a motor and a permanent magnet. Its working principle is that the motor drives the permanent magnet to rotate to generate a rotating magnetic field, and the rotating magnetic field drives the stirrer in the liquid in the container to move circularly, and its stirring torque is small. , and the motor is noisy when running, and the mechanical failure rate is high. Generally, it uses AC power supply and cannot be used outside.

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