SU1270066A1 - Belt conveyer - Google Patents

Abstract

The invention relates to the field of conveyor transport and makes it possible to increase the efficiency of removal of metallic inclusions from the cargo during transportation by shaking the belt with the cargo. w //// m ////// / For this, the core of the electromagnetic unit (EMB) is made of a composite of two parts. The upper part (HF) 5 of the core and the windings 11, placed on the cylinders 9, 10, form a moving electromagnetic system. The lower part (LF) 6 is mounted on a cable connected to HF 5 by elastic elements 14. When current passes through the windings 11 in cylinders 9, 10 and HF 5 and LF 6 of the core, electromagnetic fields arise. By making the NP 6 of a diamagnetic material, the magnetic field in it is directed against the magnetic field in the HF 5, made, like the cylinders 9, iO, of a ferromagnetic material. When applied to the voltage of the RF 5, the core is repelled and, moving along the pin 7, hits the belt 1. The joint (opening the belt 1 causes loosening of the transported ore and, consequently, the release of inclusions 17. 4 Il.

Description

The invention relates to conveyor transport, namely belt conveyors.

The purpose of the invention is to increase the efficiency of removal of metallic inclusions from the cargo during transportation by shaking the tape with the cargo.

FIG. 1 shows a belt conveyor; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section B-B in FIG. 3; in fig. 4 is a diagram of the interaction of cores with windings.

The belt conveyor consists of a belt 1, an envelope of the end drums 2 and 3, under the load-carrying branch of which an electromagnetic unit 4 is located, comprising a core made of two parts 5 and 6. The upper part 5 of the core is mounted for movement along a vertical pin 7 fixed to the fixed bottom 6 of the core, which is mounted on the support 8 and is made of a diamagnetic material. The lateral surface of the core part 5 is adjacent to cylinders 9 and 10 located at an angle to the vertical with windings 11, which form a single mobile electromagnetic system with part 5. Lugs 12 and 13, respectively, are mounted at the ends of the cylinders 9 and 10 and at the fixed part 6 of the core, respectively, between which springs 14 are installed to create an elastic connection between the parts 5 and 6 of the core.

The transported material (ore) is fed to the conveyor belt 1 from the feeder 15 and then fed to the hopper 16.

In order to detect metallic inclusions in ore 17, an inductance coil 18 is installed under the load-carrying branch of the tape 1 between the end drum 2 and the electromagnetic unit 4. A constant supply voltage to the inductor 18 and the electromagnetic unit 4 is supplied from the source 19, and the signal about the passage switching on 17 above inductance coil 18 and, accordingly, issuing a control signal for switching on unit 4 with a corresponding delay, is carried out using an instrument 20. Part 5 and cylinders 9 and 10 are filled From ferromagnetic material, and part 6 - from diamagnetic.

Belt conveyor works as follows.

When the cargo branch of the belt 1 moves, the ore moves from the feeder 15 to the bunker 16. If there is a metal inclusion 17 in the transported ore, then the passage above the inductance 18 will change its electromagnetic field, which is recorded by the device 20. Depending on the speed of the tape 1 and the distance between the inductance roller 18 and the block 4 in the device 20 is determined by the time

the delay of the control signal for the supply of a pulse voltage to block 4. The moment of voltage supply to block 4 must coincide with the moment of passing over it

power on 17.

When current passes through the windings 11 in the cylinders 9 and 10 and parts 5 and 6 of the core, electromagnetic fields arise, and the field of the moving part of the core (part 5 and cylinders 9 and 10) has direction,

opposite to the floor in the movable part of the core (Fig. 4). This is achieved by making part 5 and cylinders 9 and 10 of ferromagnetic material, such as steel, and part 6 of the core, of diamagnetic material, such as copper. In the external magnetic field of the lower and upper parts of the core, respectively, the magnetic moments of the protective skin direction appear. Dt of both parts 5 and 6 of the core is external magnetic

Field 0 is a field created by cylinders 9 and 10 with windings 11. Since part 5 of the core and adjacent cylinders 9 and 10 are made of the same material, they form a single core. Since the magnetic field in the diamagnetic

5 is directed against the magnetic field in a ferromagnet, then when voltage is applied to the electromagnetic unit 4, the movable part 5 of the core pushes upward from the stationary part 6 and, moving along the pin 7, with its upper part strikes

 the load-carrying branch of the tape 1. The insertion of the tape 1 causes loosening of the ore being transported at the location of the turn-on 17, which greatly facilitates the knock-out of the turn of 17 from the thickness of the ore under the action of the electromagnetic field of the moving part of the core 5.

The pulsed nature of the voltage applied to the electromagnetic unit 4 determines the short duration of the interaction of the magnetic fields of the moving 5 and fixed 6

Q parts of the core; therefore, after impact, the movable part 5 of the core returns to its original position under the action of springs 14.

The belt conveyor provides for the extraction of metallic inclusions from the transp5 material (ore) and, consequently, increases the degree of ore homogeneity.

Claims (2)

Invention Formula Belt conveyor, including an end drum barring tape and a core and windings located under the load-carrying tape branch, characterized in that, in order to increase the efficiency of removing metallic inclusions from the load during transportation by shaking the tape with the load, the core is made in the form of two parts: the lower fixed part of the diamagnetic material and installed on it with the possibility of interaction with the tape of the upper movable part, on which the windings are fixed, with the lower the fixed part of the core is connected to the upper part of the core by means of elastic elements. Fy + iH . / U /) yL J 5- 6. 8 2.J