SU639774A1 - Method of preventing hanging of loose materials in hopper - Google Patents

Description

ii:

This invention relates to methods for preventing bulk formation of bulk materials in industrial containers and can be used in the chemical, construction, and other industries where bulk materials are recycled.

There is a known method of blunt granular material in a silo by rotating a paddle stirrer 1 installed inside it.

The disadvantage of this method is the incomplete destruction of the arch structures, especially in the inter-blade volume. An increase in the number of blades leads to an increase in power consumption.

A known method of preventing the bulk formation of bulk materials in a bunker, adopted as a prototype, is that the material is given a rotational motion and simultaneously loosened with a rotating ripper 2.

A disadvantage of the known method is its low efficiency in the destruction of arched structures, since during the movement of the material in front of the rotating blade, the structures are destroyed due to overfilling. Increasing the number of revolutions will increase energy consumption.

The aim of the invention is to increase the efficiency of the method of preventing the formation of bulk materials 1x in a silo.

For this, the material is rotated in the direction opposite to the rotation of the ripper with an ANGULAR speed not exceeding 6 / s.

In such a process, the destruction of the arched structures is enhanced by the application of additional shearing forces to the material particles.

FIG. 1 schematically depicts a bunker

For the implementation of the proposed method,

general form; in fig. 2 — node I in FIG. one;

in fig. 3 - coupling: bottom bottom with cylinder. M, option.

The bunker consists of a cylinder 1 with a supporting RING 2 and a conical bottom 3 with a supporting RING 4. Rings 2 and 4 are equipped with friction rings 5 and 6 made of materials with a low coefficient of friction sliding, such as copper and bronze alloys, fluoroplastic. The fastening of the rings 5 and 6 to the rings 2 and 4 is carried out in a known manner. The ring 4 is made with the centering protrusion 7, and the ring 2 with the groove 8.

FIG. 3 shows the second variant of conjugation of the bottom 3 with the ciliidrome 1. On the rings

2 and 4, spherical surfaces are provided, between which metal-metal balls 9 are installed. Outside the body, a support ring 10 is attached on which a ring 11 of soft material is placed. On the ring 2 is installed fencing ring 12, which together with him n cylinder 1 form a lubricating bath.

An axle shaft 13 is installed along the axis of the bunker, with blades 14 and unloaded nn-iek 15. The bottom 3 is connected to a rotational drive 16.

To unload the bulk material from the hopper, the shaft 13 is driven. The blades 14 destroy the arched structures of the material, and the screw 15 discharges the material from the bottom outlet.

For a more complete destruction of the arch structures include a drive 16 of rotation of the bottom. Due to the strength of the friction against the wall

the bulk material begins to move in the direction of rotation. Due to the internal friction forces of the bulk material, more and more removed layers of bulk material begin to come into rotation. Prz the rotation of the bottom in the direction opposite to the rotation of the blades, is increased by moving the layers relative to each other by applying to the volume of the material

two counter-directed tangential forces. When this volume is raised by a vertical load of the force of gravity of the overlying layers of bulk material, there is an intense destruction of the layers and a shift of the individual layers relative to each other in the entire volume of the bunker. The table shows the results of testing the hopper on various materials with different bulk weights and average

particle size:

Tests have confirmed the effectiveness of the method. Implementing it in bunker installations will ensure uninterrupted flow of bulk material, which will ensure continuous processing of raw materials, reduce production downtime, and improve working conditions by eliminating manual labor during material loading.

Ф о р м у л а and :; about b ete n i

A method of preventing the formation of bulk materials in a bunker, which consists in giving the material a rotational motion and at the same time

it is loosened by a rotating ripper, in order to increase its efficiency, the material is rotated in the direction opposite to the dyeing (£ 1), with an angular velocity iic and an alternating G / sec.

Sources of information taken into account in the examination

1.Evdokimov V.V. Equipment and mechanization of enterprises of plastics and artificial leather. M., “Light Industry, 1973, p. 143 --- 144.

2. USSR author's certificate number 201230, cl. In 65G 65/34, 1965.

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