A magnetic level detection device

Abstract

The invention provides a magnetic material level detection device which mainly consists of a guide pipe, a soft measuring sleeve, electromagnets, permanent magnet pieces, a resistive network circuit board including contact switches, an intelligent unit and the like. Stationary contacts, movable contacts and electromagnets are distributed on all faces of the guide pipe, an abrasion-resisting layer is arranged outside the soft measuring sleeve, a conductive layer is arranged inside the soft measuring sleeve, and the permanent magnet pieces are further clamped between the abrasion-resisting layer and the conductive layer. After a material submerges the soft measuring sleeve, an extrusion force is greater than a magnetic force between the electromagnets and the permanent magnet pieces, so that the soft measuring sleeve contracts to be contact with the guide pipe, conductive wires inside the guide pipe enable the contacts, distributed on the all planes of the guide pipe, of the contact switches to be connected, certain precision resistors in a resistive network undergo short circuit, and a level value of the material in a container is obtained after resistance value conversion. The magnetic material level detection device can be used for measuring the liquid or solid material level and further has an automatic sticking elimination function.

Description

technical field [0001] The invention relates to a device for measuring the height of materials in a container, in particular to a magnetic level detection device. Background technique [0002] Level detection is to measure the height of the material in the container. The material is generally divided into liquid and solid. The liquid level is generally called the liquid level, and the solid level is also often called the material level. At present, the main devices used to measure liquid level are float type liquid level gauge and pressure type liquid level gauge. The devices used to measure solid level mainly include capacitive level gauge and hammer type level gauge, which can measure The two kinds of material level devices include ultrasonic level gauge and radar level gauge. The float type liquid level gauge has a simple structure and low cost, but when measuring the liquid level of corrosive liquids, an anti-corrosion coating needs to be installed, which leads to an in...

AI Technical Summary

Problems solved by technology

Ultrasonic level gauges and radar level gauges are both non-contact measurement types, not limited by the corrosiveness or shape of the material to be measured, and can be widely used to measure the level of various liquids or solids, but they are expensive and complicated to install , and the accuracy is easily affected by the environment, it is difficult to be used in occasions where there are foam, stirring, piping and heating equipment in the container

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