Float bowl spiraling type liquid level controller

Abstract

The invention relates to the technical field of automatic control, in particular to a float bowl spiraling type liquid level controller, which does not need a power supply, is capable of sending connection or disconnection signals according to the requirement on the height of liquid levels, and comprises a magnetic reed switch, a float bowl and a guide rod, wherein a magnetic material piece is arranged in the float bowl, the magnetic reed switch is arranged in the guide rod made of non-permeability material, and the guide rod is arranged in an inner hole of the float bowl. The float bowl spiraling type liquid level controller is characterized in that a guide wire is arranged on the guide rod, is wound along the outer diameter of the guide rod in a spiral shape, and is an electric conduction metal wire adhered with a plastic protection layer. In the float bowl spiraling type liquid level controller, as the guide wire is wound along the outer diameter of the guide rod, the outer diameter of the guide rod is in point contact with the wall of the inner hole, the friction between the outer diameter of the guide rod and the wall of the inner hole of the float barrel is small, the guide rod and the wall of the inner hole of the float bowl are not adhered, and the sensitivity and precision of the float bowl from being static to moving are high.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a buoy (ball) screw type liquid level controller which does not need a power supply and can send on or off signals in time according to the liquid level height requirements. Background technique [0002] A few days ago, the float type liquid level controller on the market is mainly composed of a magnetic reed switch and a float. The float is equipped with a magnetic material. The magnetic material is generally in the shape of a block, so it is called a ball. This float with a magnetic block inside is also called a float. (ball), the magnetic reed switch is installed in the guide rod made of non-magnetic material, the float (ball) rises or falls with the liquid level, when the magnetic material in the float (ball) moves with the discharge cylinder When the magnetic material in the (ball) is transported with the buoy (ball) to the liquid level to be controlled, it can at...

AI Technical Summary

Problems solved by technology

[0002] A few days ago, the float type liquid level controller on the market is mainly composed of a magnetic reed switch and a float. The float is equipped with a magnetic material. The magnetic material is generally in the shape of a block, so it is called a ball. This float with a magnetic block inside is also called a float. (ball), the magnetic reed switch is installed in the guide rod made of non-magnetic material, the float (ball) rises or falls with the liquid level, when the magnetic material in the float (ball) moves with the discharge cylinder When the magnetic material in the (ball) is transported with the buoy (ball) to the liquid level to be controlled, it can attract the magnetic reed switch fixed at the liquid level to make it conduct or disconnect, so as to realize the automatic control of the liquid level Or indication, after the float (ball) leaves, the reed switch position returns to the original state, such as figure 1 Shown is when the liquid level is below the control point, the reed switch is open, figure 2 When the liquid level reaches the control point, the magnetic reed switch is closed. The inner hole of the float (ball) of the liquid level controller with this structure fits the outer diameter of the guide rod, and the axis of the inner hole of the float is parallel to the axis of the guide rod. In the liquid level, the inner hole of the float (ball) and the outer diameter of the guide rod fit together with the containing surface. The disadvantage is that the inner hole of the float (ball) and the outer diameter of the guide rod are in line or surface contact, and the contact area is large. The friction between the holes is large, and the phenomenon of sticking between the guide rod and the inner hole of the buoy is prone to occur, which reduces the sensitivity and accuracy of the buoy (ball) from rest to motion, and sometimes the guide rod may be stuck in the inner hole of the buoy, resulting in control failure Phenomenon

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