10 results about "Magnetic components" patented technology

A bio-sensing device includes a first platform, a second platform, at least one first magnetic element, and at least one second magnetic element. The first platform is configured to support a microplate. The microplate has a plurality of wells, each of which stores a reagent and a plurality of microbeads. The second platform is movably placed below the first platform. The first and the second magnetic elements are respectively located on the second platform. The first magnetic element moves along with the second platform to magnetically attract the microbeads in the wells, the second magnetic element moves along with the second platform to demagnetize the microbeads in the wells, and magnetism of the first magnetic element is opposite to magnetism of the second magnetic element.

The present invention discloses a detachable electric appliance electric protection structure and a gas processing device. The detachable electric appliance electric protection structure can achieve electric protection when an electric appliance is in a dismounting state, the electric protection structure comprises a proximity switch which is connected in series to a circuit in the electric appliance, the proximity switch comprises a magnetic control element, the electric protection structure comprises a dismounting piece arranged on the electric appliance, and the dismounting piece is provided with a magnetic element; when the dismounting piece is in an installation state, the magnetic element is close to the magnetic control element to allow the proximity switch to be in a conduction state; and when the dismounting piece is in the dismounting state, the magnetic element is far away from the magnetic control element to allow the proximity switch to be in a disconnection state. According to the detachable electric appliance electric protection structure and the gas processing device, when the dismounting piece is in the dismounting state, the proximity switch is configured to closethe circuit in the electric appliance so as to avoid an accident and improve the safety of the detachable electric appliance electric protection structure and the gas processing device.

The invention discloses a preparation method of a magnetic carbon material and belongs to the technical field of carbon materials. The problems that wastewater is produced in a conventional process ofpreparing the magnetic carbon material by taking ferroferric oxide as a magnetic component, the preparation process is complicated and equipment is expensive can be solved. The preparation method specifically comprises the following steps: taking ferrocene and red phosphorus as raw materials, uniformly mixing the two materials according to a feed mass ratio of (0.5-3):1, and heating in a closed reactor with oxygen content of 5-25%, wherein the temperature rise mechanism comprises the following steps: raising the temperature to 400-500 DEG C at a rate of 1-5 DEG C per minute, maintaining the constant temperature for 1-5 hours, and naturally cooling to a room temperature; opening the reactor to take out the reaction product, heating under the temperature condition of 40-80 DEG C, initiatingcombustion, and collecting the obtained black fluffy combustion product, namely the magnetic carbon material. The preparation method of the magnetic carbon material disclosed by the invention has theadvantages of being simple and reliable in process route, capable of realizing large-scale preparation and the like.