RU2819342C1 - Granulator of loose materials - Google Patents

Abstract

FIELD: various technological processes.

SUBSTANCE: invention is intended for granulation of loose materials in chemical and other industries. Granulator of loose materials comprises a cylindrical housing, a rotating shaft installed inside it with mixing elements forming a gap with the cylindrical housing, a moistening device. Stirring elements installed in the moistening device zone are located in planes perpendicular to the shaft axis, at acute angles to the normals to the shaft surface, have a conical shape, and mixing elements installed in the rest of the housing are made in the form of radial rods with grooves on side surfaces.

EFFECT: granulator of loose materials will allow providing high quality of mixing of loose media with liquid binder and obtaining granules of practically the same size.

1 cl, 3 dwg

Description

The present invention is intended for granulating bulk materials in the chemical and other industries.

A known granulator for bulk materials contains a cylindrical body, a central shaft installed inside it, mixing elements, a means for moving the mixing elements along the body, a hollow shaft mounted concentrically on the central shaft by means of splined connections, the mixing elements are mounted on the hollow shaft, a means for moving the mixing elements contains a sleeve mounted on a hollow shaft by means of a bearing and connected to an axial movement drive [AC SU No. 1408597, IPC B01J 2/00, publ. 03/10/1995].

The disadvantage of this granulator is the low quality of mixing of bulk media with a liquid binder, which leads to the production of granules that vary greatly in size and increases the duration of the process.

The closest to the proposed invention is a granulator of bulk materials, containing a cylindrical body, a rotating shaft installed inside it with mixing elements that form a gap with the body, a device for reciprocating movement of the mixing elements, and a means for moistening. The mixing elements located in the humidification zone and the mixing elements located in the rest of the housing at a distance from each other equal to the longitudinal stroke of the reciprocating motion are installed in relation to the housing with a gap less than the gap between the housing and the remaining mixing elements of at least by 1 mm [AC SU 1563011, IPC B01J 2/00, publ. 03/10/1995].

The disadvantage of this granulator is the low quality of mixing granules with a liquid binder, which leads to the production of granules that vary greatly in size and increases the duration of the granulation process.

The technical result of this invention is the creation of a granulator for bulk materials that provides high quality mixing of bulk media with a liquid binder.

The technical result is achieved by the fact that a granulator of bulk materials is proposed, containing a cylindrical body, a rotating shaft installed inside it with mixing elements that form a gap with the cylindrical body, and a device for moistening.

Distinctive design features of the proposed invention are that the mixing elements installed in the area of the humidification device are located in planes perpendicular to the shaft axis, at acute angles to the normals to the shaft surface, have a conical shape, and the mixing elements installed in the rest of the housing are made in the form radial rods with grooves on the side surfaces.

In fig. Figure 1 shows a diagram of a granulator for bulk materials.

In fig. 2 shows view A.

In fig. 3 shows view B.

The granulator of bulk materials contains a cylindrical body 1, a rotating shaft 2 installed inside it with mixing elements 3 and 4, forming a gap with the cylindrical body 1, a device for moistening 5. The mixing elements 3, installed in the area of the moistening device 5, are located in planes perpendicular to the axis of the shaft 2, at acute angles to the normals to the surface of shaft 2, have a conical shape. The mixing elements 4 installed in the rest of the body are made in the form of radial rods with grooves 6 on the side surfaces.

The granulator of bulk materials works as follows.

The bulk materials to be granulated enter the internal volume of the cylindrical body 1, into the zone of the moistening device 5, where the liquid binder is introduced.

The rotating shaft 2 with mixing elements 3, acting on the material, intensively mixes it with the liquid binder.

In order to improve the quality of mixing of bulk material with a liquid binder, the mixing elements 3, installed in the area of the moistening device 5, are located in planes perpendicular to the axis of shaft 2, at acute angles to the normals to the surface of shaft 2.

This arrangement of the mixing elements 3 provides repeated impact on the mixed materials at different angles. In addition, this makes it possible to increase the length of the mixing elements 3 compared to their radial arrangement, which improves the quality of mixing.

Making the mixing elements 3 conical in shape allows for different effects on materials in different areas, which also contributes to the quality of mixing.

Next, bulk materials with a liquid binder introduced into them enter the zone of action of the mixing elements 4 installed on the shaft 2 in the rest of the housing. This is where the granulation process takes place. Due to the fact that the mixing elements 4 are made in the form of radial rods with grooves 6 on the side surfaces, additional mixing of the bulk material with the liquid binder occurs during the granulation process. The presence of grooves 6 provides a multidirectional effect on the material, which promotes intense mixing.

The finished granules are unloaded through the unloading device.

The proposed design of a granulator for bulk materials will ensure high quality mixing of bulk media with a liquid binder and obtain granules of almost the same size.

Claims (1)

A granulator of bulk materials containing a cylindrical body, a rotating shaft installed inside it with mixing elements forming a gap with the cylindrical body, a device for moistening, characterized in that the mixing elements installed in the area of the moistening device are located in planes perpendicular to the shaft axis at acute angles to the normals to the shaft surface, have a conical shape, and the mixing elements installed in the rest of the housing are made in the form of radial rods with grooves on the side surfaces.

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