SU139612A1 - Mechanical bottom unloader of cylindrical hoppers for caked and hanging bulk materials - Google Patents

Description

Mechanical bottom unloaders of cylindrical bunkers for caked and hanging bulk materials with a centrally located drive protected by a fixed cone and a working body in the form of two diametrically arranged horizontal cantilever screws rotating in a horizontal plane under the thickness of the material and feeding this material through a discharge opening in the center of the bunker bottom on vehicles known.

The disadvantage of such unloaders is that they are unreliable due to the impact on mechanisms of unbalanced loads, have significant resistance to the rotation of the rotor from the pressure on it of the thickness of the material of the bunker, and also create a large resistance to the movement of material by the screws and reduce the process of coagulation.

Discharger, according to the invention, does not have these disadvantages.

A distinctive feature of the described mechanical bottom unloader of cylindrical bunkers is that, in order to increase the reliability of work by balancing the loads on the mechanisms, the working member is placed together with the drive in a centrally located rotor with external gear teeth, rotating around a vertical axis common to them drive located under the bottom of the hopper. In order to reduce the resistance to rotation of the rotor from the pressure of the material thickness, the protective cone is mounted on the upper ring of the rotor on the rollers and remains stationary relative to the material placed in the hopper due to friction of the latter on the outer surface of the cone, and to reduce the coagulation process

No. 139612-- 2 MHHHjVtyMa, screws are enclosed in C-shaped protective covers, the outreach of which corresponds to the internal diameter of the cylindrical bunker.

FIG. 1 shows a loader in plan; in fig. 2 is a section along AA in FIG. one; in fig. 3 shows a section according to 5.6 in FIG. 2 with a cross section along the BB.

The mechanical bottom unloader is a cylindrical rotor / (Fig. 2) of boiler iron, on the upper part of which the ring 2 of the box section is welded upwards with the shelves, reinforced with stiffeners.

The bottom ring of the rotor, articulated with the upper brackets 3, rests on the rollers 4, perceiving the vertical load of the rotor as it rotates around a vertical axis. The working body of the unloader is made in the form of two horizontal cantilever screws 5 which are diametrically located at the bottom of the rotor; shaft 6 is passed through the vertical holes in the E walls of the inside of the rotor and rests on two bearings 7. The screws rotate simultaneously around two mutually perpendicular axes, horizontal and vertical, which is the axis of the bunker. The drive of the working body of the rotor is carried out from the electric motor 8 through a single-stage gearbox and a gear drive secured by a casing .9. The rotor with the screws around the vertical axis is rotated by means of an electric motor 10, located under the bottom of the bunker, through a gearbox and gear 11, which interacts with the gear ring on outer axle 12, fixed on the lower end of the rotor. To maintain the same rotational speed of the vertical axis of the rotor on the lower ring, on its perimeter, roller bearings 13 are installed. On the upper ring 2 of the rotor, a protective conical casing 15 is mounted on the rollers 14.

The augers of the working body are enclosed in protective covers of 16 C-shaped section (Fig. 4). The supply voltage for powering the motor S is made through the roller current collector 17 and the wounds (not shown).

The operation of the unloader is carried out as follows: after switching on the drives of the working member and the rotor, the augers receive rotational motion around their own axis and at the same time drive the rotor into translational circular motion in a horizontal plane, around a vertical axis, which is simultaneously the axis of the rotor. The silo rotating screws pushes into the holes in the vertical walls of the inside of the rotor and falls through the discharge bottom hole on the conveyor belt, which he transported.

Subject invention

Claims (3)

1. Mechanical bottom unloader of cylindrical bunkers for caked and hanging bulk materials having a centrally located drive protected by a fixed cone, and a working body in the form of two diametrically arranged horizontal cantilever shnekov, rotating in a horizontal plane under the thickness of the material and feeding this material through a discharge opening in the center of the bunker bottom for vehicles, characterized in that, in order to increase reliability by balancing the loads on the mechanism The working tool is placed together with the drive in a centrally located rotor with a gear external rim, rotating around a common vertical axis for them from a separate drive located under the bottom of the hopper. 2. Mechanical bottom unloader according to claim 1, characterized in that, in order to reduce the resistance of the rotor rotation to the pressure of the material thickness, the protective cone is mounted on the upper rotor ring on the rollers and remains stationary relative to the material placed in the hopper due to the friction of the latter against the external surface of the cone , 3. Mechanical bottom Yazgruzchik on PP. 1 and 2, characterized in that, in order to reduce the resistance to movement of the material and reduce the coagulation process to a minimum, the screws are enclosed in C-shaped protective covers, the overhang of which corresponds to the internal diameter of the cylindrical hopper.