SU121382A1 - Porshnevaya jigging machine - Google Patents

Description

For enrichment of ore minerals, piston-operated jigging machines are used with pneumatic pulsation and unloading of the oversize product through an automatically adjustable gate, the position of which is determined by the position of the float lowered into the bed of enriched material.

The proposed machine is more perfect in comparison with the known similar machines, since it provides an increase in labor productivity and a reduction in the flow of under-graded water. This is achieved by making the float in the form of an open hollow cylinder with a closed mesh bottom and loosely packed granular material in it of a certain specific weight and size, which during pulsation is weighed together with the enriched material. In this case, the float responds only to a change in the layer of a certain specific weight.

The drawing shows the installation diagram of the float in the proposed machine.

In the proposed machine, the pulsation mode is carried out by supplying compressed air from the blower through the spool valve device.

The oversize product is unloaded by means of an automatically adjustable gate that is set in motion when the pneumatic servo actuator moves the piston.

The amount of air entering the servo and, consequently, the degree of opening of the gate is controlled and regulated by a float}, lowered into bed 2 of the enriched material. The float is a hollow cylinder open at the top, the bottom of which is covered by a grid 3. A small amount of material 4 of a certain specific weight and size is laid on the grid.

No. 121382-2 -

With an upward flow of fluid along with the material lying on the sieve 5 of the machine, the material 4 in the smelt is weighed. At the same time, the weight of the float is reduced, and under the action of the counterweight 6 it rises, opening the gate.

With this implementation of the float its share. always corresponds to the specific weight of the medium, regardless of the degree of its loosening, and its elevation corresponds to the elevation of the bed. Thus, the float responds only to a change in the layer of a certain specific weight.

The fractions that have passed under the gate are discharged from the machine by an elevator or, if the technical water in this area is not scarce, by airlift with - subsequent use of the outgoing water as transport water.

The amount of air and undersure water in a machine is regulated by the difference in levels in the working and air compartments, which is directly proportional to the pressure regime of the air in the machine and inversely proportional to the amount of undersize water. The actuators that supply air and undersize water operate depending on the position of the float installed in the air compartment of the machine.

Subject invention

1. A pistonless jigging machine for ore mineral raw materials with pneumatic pulsation and unloading of oversize product through an automatically adjustable gate, the position of which is determined by the position of the float lowered into the bed of the enriched material, so as to increase productivity and reduce consumption water, the float is made in the form of an open hollow cylinder with a closed mesh bottom and loosely laid in it granular material of a certain specific, in The weight and size weighed during pulsation BMeiCTe with weighing of the enriched material, therefore the float reacts only to a change in the layer of a certain specific weight. "2. Execution of the device according to claim 1, characterized in that, for the purpose of automatic adjustment of the air and sub-bottom water dropping, a float is used associated with the actuators and installed in the air compartment of the machine, the level of which depends on changes in the air deposition mode.