SU121099A1 - Device for controlling crane unloading pyramidal clarifiers - Google Patents

Description

To control the unloading valve of pyramidal clarifiers of the beneficiation plants, depending on the density of the pulp that fills the clarifier and the content of solids in it, devices are used that contain a time relay, pneumatic valves and capacitive-dielectric level sensors.

The proposed device differs from the well-known ones in that it uses a measuring funnel installed between the settling basin and the drainage chute and equipped in the lower part with a calibrated outlet, and in the upper electric level meter, for example, of the capacitive type. The level meter controls the activation of the sump outlet valve depending on the change in the height of the level of the filling funnel of the slurry, continuously coming from the outlet jga. Such an embodiment of the device makes it possible to automate the process of unloading the settling tank when the set density of the pulp is reached.

The drawing shows a schematic diagram of the proposed device.

The device uses a measuring funnel /, installed between the settling tank 2 and the drainage tube and is provided at the bottom with a calibrated orifice through which the pulp flows into the funnel through the outlet valve 5 with electromagnetic control. The pulp flow rate from funnel 1 is determined by its density. Therefore, with a constant flow of pulp into the funnel, the height of its level will be determined by the density of the pulp. An electric level meter 4 (for example, of the capacitive type) is installed in the upper part of the funnel, which sends a signal to close the sump exhaust valve in the event that the pulp level in the funnel falls below the set height.

Subject invention

A device for controlling a crane unloading pyramidal clarifiers of the beneficiation plants depending on the density of the filling

a sump of pulp and solid content in it, characterized in that, to automate the process of unloading the sump when the specified density of the filling pulp is reached, a measuring funnel is used, installed between the sump and the drain chute and provided with a calibrated outlet in the bottom part, an upper electric level meter, for example, of a capacitive type, which controls the activation of the sump exhaust valve depending on the change in the height of the level of the pulp funnel, continuously coming from the sump.