SU936979A1 - Drum mixer - Google Patents

Description

(DRUM MIXER

one

The invention relates to devices for mixing bulk materials, in particular toxic, highly acidic in air, blast and fire hazardous materials, for which sealing of loading and unloading is required and can also be used in automatic and production lines with remote control and is used in chemical pharmaceutical industry, nonferrous and ferrous metallurgy and other branches of the national economy.

A rotary drum mixer containing a device for loading and unloading a biconical material is known, the housing within which a partition is arranged, made in the form of a segment with a chord parallel to the rotation axis of the housing, and forming a sealed channel with one of the two

hollow trunnions attached to the D3 case.

The disadvantage of the mixer is that the entrance from the chamber to the hermetic channel is located on the side of the hollow journal. When the body rotates, there are no, for example, gravitational, ensuring the movement of the material along the surface of the partition along

10, the axis of rotation toward the entrance to the hermetic channel, which makes unloading of the material almost impossible.

The purpose of the invention is to improve the conditions for unloading material from the mixer.

The goal is achieved by the fact that in a drum mixer, containing a rotating body with hollow trunnions, loading and unloading devices, a chamber placed above the bottom of the body with an inlet opening and an outlet opening connected by a sealed channel

one of the hollow trunnions, the outlet opening is located opposite the entrance opening.

FIG. 1 shows an example of a constructive embodiment of the proposed drum mixer, section; in fig. 2 is a section AA in FIG. one; in fig. 3 shows a section BB in FIG. .one.

The drum mixer includes a rotationally coupled biconical case 1 with hollow trunnions 2 and 3 fixed in articulated supports k and 5. The form of the mixer body in other versions can be cylindrical, spherical, in the form of a tetrahedron, etc. A hollow trunnion 2 is provided with a drive screw 6 for loading material. Inside the housing 1 at some distance from the bottom, a partition 7 is installed, made in the form of a segment and forming chamber 9 with Bottom 8. Chamber 9 is connected by a sealed channel 10 with a hollow trunnion 3. Inlet 11 into the sealed channel 10 is located a chamber 9 with a material mixing cavity. A hollow rib 12 is fixed in the hollow trunnion 3, through which the material is transported for unloading when the housing 1 rotates.

The drum mixer works in the following way.

The material to be mixed is fed into the mixer through the hollow pin 2 by the screw 6. After which the body 1 is rotated (see Fig. 3) and the material is mixed. At the same time, the part of the Material filling the chamber 9 and in its lower position, when moving to the upper position, is poured out of it into the working volume.

After the mixing process is over, to ensure the material is unloaded, the direction of rotation of the housing 1 is reversed (see FIG. 3). The material then fills the chamber 9, under the action of gravity moves along its surface to the inlet 11 into the hermetic channel 10, and Channel 10 in the process of rotation enters the hollow pin. 3. Upon further rotation of the housing 1, the material with a helical rib 12 moves along the hollow journal 3 and is discharged from the mixer.

The mixer makes it possible to perform mixing operations without depressurizing the system, which allows the mixing process of highly acidic in air, B13 explosive and flammable substances in an atmosphere of inert gases, and, when mixing toxic substances, prevent their penetration into the workshop atmosphere. The design of the mixer ensures its reliable operation both in autonomous mode and during operation as part of automatic and production lines with remote control.

Claims (1)

1. USSR author's certificate H- t 195i; cl. On 01 F 9/06, 1972.