SU695693A1 - Granulator for paste-like materials - Google Patents

Description

one

The invention relates to a device for producing granules from pasty materials and can be used in the chemical petrochemical, food and feed feed industries.

A known rotary press comprising a rotary cylinder with a radial screwdriver, connected to a rotary drive, pushers mounted in the holes, a copier placed in the cylinder and containing a stationary guide element and eccentrically mounted rolls, and means for injecting the granulated material 1.

In such a granulator, when the matrix holes are filled with material and subsequently pressed, the product and its liquid phase penetrate between the pushers and the walls of the holes inside the cylinder into the area of the guide elements of the copier rolls, which causes frequent presses for cleaning and leads to a premature wear parts and reduced service life, as well as jammed, increasing the time

for repair and replacement of worn out working bodies.

In addition, parts of a copier require lubrication, which can flow in the lower position of the pusher along the wall of the hole, and when filling the holes B, the next lubrication cycle will fall on the tablet surface, thereby reducing the quality of the granulate. When the end faces and heads of the pushers are worn, the composition of the tablets becomes non-uniform, the appearance deteriorates.

The purpose of the invention is to increase the life of the granulator and improve the quality of the granules.

This is achieved in that the predlocked granulator is provided with an elastic band mounted 1 and outside the cylinder and an outer cylinder with holes made coaxially with the holes of its inner cylinder.

Such a granulator design allows hermetically separating the granule forming area from the means for removing the granules from the holes, which prevents the product, especially abrasive and acidic, from getting into the area of the roll guide elements and eliminates

|. Reverse flow of lubrication into the pellet forming area.

FIG. 1 shows a granulator; a vertical section r in FIG. 2 shows section A-A in FIG. one.

The granulator contains a cylindrical forming drum consisting of an outer cylinder 1 and an inner cylinder 2 with coaxial holes. The cylinders are rigidly interconnected. An infinite PiPaH tape 3 is installed in the annular groove of the inner cylinder 2, made in the form of a thin-walled sleeve, for example, a cutting sleeve. The tape 3 separates the perforation of one cylinder from the perforation another. interacting with the ribbon; th 3 rounded (spherical) then; Opposite the ends of the pusher (they interact with roller 5 mounted inside cylinder 2 in

on the lower part in bearings 6 on the base and 7, rigidly connected to the slide 8, the prevention of release from the holes is provided concentrically on the axis 9 to cylinders I and 2 of the drum 10, the outer surface of which is coated with antifriction material. The device for filling the openings of the cylinder 1 with a granulated material is made in the form of a pressure roller 11. The roller and the grate are fed from the gearbox 12. The granulated product is fed through the hopper 13.

The optimum thickness of the tape 3 is 0.05-0.06 of the diameter of the openings of the outer cylinder 1, made with an extension outwards (in the form of truncated holes). The diameter of the holes of the inner cylinder 2 is 0.75-0.8 of the diameter of the holes of the cylinder 1. These ratios are optimal for reliable operation of the device.

Pellet torus works as follows. Granulated: the product through the loading hopper 13 enters the gap between the pressing roller 11 and

cylinder 1, filling the bores of cylinder 1. When the rotor rotates, the pushers installed in cylinder 2 interact with roller 5 and push the formed granule out of the holes of cylinder 1 through the belt 3. After the roller 5 leaves the zone of action, the pushers return to their original position due to elasticity tape and the subsequent pressure of the product. through it.

Thus, the proposed device prevents abrasive and corrosive wear of the main mechanism and the drive mechanism of the pushers. In addition, it provides an increase in the quality of the granules and the homogeneity of the product according to the particle size distribution.

The elimination of seizure due to the product falling between the pushers and the openings contributes to an increase in the working speeds of the lattice rotation, which increases the productivity of the device.

Claims (1)

1. German patent 306876, cl. 58 a 11/12, 1318. X