SU1738723A1 - Method of adjusting size of outlet hole in bin with current conducting material - Google Patents

Abstract

The invention relates to loading operations. The purpose of the invention is to improve ease of operation and to ensure that the outlet can be completely blocked. The electromagnets installed on the walls of the outlet of the chamber are briefly affected by electric current, creating a magnetic field whose lines of force are directed in a horizontal plane to the walls of the chamber, stop the flow of bulk material formed in the bunker with an arch, and then close the outlet of the chamber 5 or so.

Description

The invention relates to loading and unloading operations, in particular, to methods for loading and unloading bins with electrically conductive bulk material, such as metal chips.

The closest to the proposed method is that the electrically conductive bulk material that is poured into the bunker at the outlet of the outlet is attracted by magnetic forces to the rows of permanent magnets placed inside the non-magnetic housings mounted on the walls of the bunker, arranged in chains in the form of brushes. Thus, a barrier is created for the subsequent outflow of the bulk material. Formed around the brush magnets reduce the size of the slit of the outlet.

A disadvantage of the known method of overlap is the reliability of the overlap due to the overlap of the outlet in the form of a slit, and not the complete release of the outlet.

This way is difficult to adjust the outlet.

The purpose of the invention is to improve ease of operation and to ensure that the outlet can be completely blocked.

The goal is achieved by the fact that electromagnets at the time of overlap are affected by an electric current, creating a magnetic field that magnetizes the chip elements. Due to the direction of the magnetic field force lines, the particles of the chips are attracted to one another, increasing the frictional force of both the chips against the gate walls and the internal friction in the mass of the chips. In this case, a vault is formed in the bunker, which prevents further outflow of chips through the outlet of the chamber. Chip flow stops. The pressure of the chip flow is removed from the gate, and it moves freely and closes the outlet of the chamber.

FIG. 1 shows a circuit for the flow of an electrically conductive material upon opening.

with

tom outlet; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a diagram of the effect of electric current on the electromagnets of the outlet chamber and the formation of a dome; in fig. 4 shows a section BB in FIG. 3; in fig. 5 is a diagram of closing the bunker.

Attached to the hopper 1 (Fig. 1), on the walls of which are vibrators 2 for shaking chips, a camera 3 is attached, which includes the frame 4 (Fig. 2). Electromagnets 5 are fixed on all the walls of the frame, which can be switched on or de-energized as necessary.

The included electromagnets 5 form a body of metal shavings. In this case, a magnetic field arises in chamber 3, the lines of force of which are located in a horizontal plane and directed toward the walls of the chamber (Fig. 4).

Double shutter closed hopper (Fig. 5) consists of an inclined partition 6 and the movable gate 7 mounted on the rollers 8.

When the shutter is open (Fig. 1 and 2), when the electromagnets 5 are turned off, free flow of chips from the hopper through the chamber 3 to the conveyor (not shown) or another container occurs. When the chip flow needs to be stopped, electromagnets 5 are turned on, which create a magnetic field that magnetizes the chip elements (Fig. 4). Thanks to the direction of the power lines

the magnetic field of the chip particles is attracted to one another, forming a vault 9 in the hopper (Fig. 3), which prevents further flow of the chip through the outlet opening of chamber 3. The chip flow stops. From the gate 7, the pressure of the chip flow is released and it can freely move on the rollers 8 and close the outlet opening of the chamber 3. Having established the required overlapping of the outlet gate by the gate, the electromagnets are turned off and the flow of chips from the hopper is resumed.

The use of the proposed method of blocking the bunker allows, with a low power consumption, to introduce a simple and reliable adjustment of the flow of metal chips during loading and unloading operations.

Claims (1)

Claims The method of controlling the outlet of a bunker with an electrically conductive material consists in acting on the material of magnetic forces, characterized in that, in order to improve ease of operation and to ensure the possibility of completely blocking the outlet, the effect on the material is carried out by means of electromagnets before formation material, after which the outlet is blocked by the required amount of valve BUT figure 1 Aa Schig2 FIG 3 6-6 EL, H SchigM № 5