RU2553702C1 - Mixer of high-viscosity materials - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: casing is fitted with loading and unloading ports and shafts installed in it on bearings and able of rotation, blades with adjustable inclination angle are fixed on the shafts along a spiral line. The shafts are installed on the same rotation axis. The casing is presented as two mixing chambers separated by a sieve with shaft bearings being fixed in the sieve centre. The number of the sieve cells corresponds to the sufficient throughput capacity of the mixer. A screw auger preventing congestion of the mass supplied via the loading port, is installed on the shaft of the first mixing chamber under the loading port between the side wall and the blades. The screw auger length corresponds to the length of the lower part of the loading port.

EFFECT: invention allows for better quality and homogeneity of the produced mix due to intensified mixing process, and for reduced power consumption.

3 cl, 2 dwg

Description

The invention relates to agriculture, in particular to devices for mixing highly viscous materials.

Known single-shaft paddle continuous mixer (see USSR author's certificate N446429, class B28C 5/12, published. 02.26.1971) mounted on the frame and containing a receiving hopper with a tip, a housing and a drive mechanism with an electric motor. The head is mounted on a vertical trunnion, which can be rotated in the horizontal bearing of the slewing ring, rigidly mounted on the frame. The mixer body with the working body located in it is attached to the head by means of flanges connected by bolts.

The main disadvantages of a single-shaft continuous mixer are the low quality of the resulting mixture and insufficient productivity, design complexity associated with the need to clean the working body.

The prototype of the claimed technical solution is a two-shaft continuous mixer (see Kulakovsky I.V., Kirpichnikov F.S., Reznik E.I. Machines and equipment for preparing feed. Handbook, Part 2. M., - Rosagropromizdat - 1988, p. 77-79, Fig. 24), which consists of a housing, impeller shafts with adjustable angle of inclination of the blades, which are driven by electric motors through the drive mechanisms. The welded body serves as a container for filling and mixing various components. There is a loading hatch in the upper part for loading components, and an unloading hatch in the lower part for unloading.

This mixer has the following disadvantages:

- the formation of stagnant zones in which the components do not have time to mix thoroughly, as a result of which there is a heterogeneity of mixing and low quality of the resulting mixture;

- due to the parallel arrangement of the shafts, the adjustment of the frequency of rotation of the shafts is complicated;

- the design of the mixer involves the use of electric motors of high power to move the mass of the mixture inside the mixer.

The objective of the invention is to intensify the mixing process by eliminating stagnant zones, improving the quality and uniformity of mixing by spatial redistribution of the mixture in the mixer chamber, reducing energy consumption by reducing the power of electric motors.

The problem is solved in that in a mixer of highly viscous materials, which includes a housing with loading and unloading hatches and installed in it in bearings with the possibility of rotation in different directions by means of electric motors through drive mechanisms with shafts, with blades fixed to them along a helical line with the ability to adjust the angle tilt, the shafts are mounted on one axis of rotation, and the housing consists of two mixing chambers, separated by a sieve with cells, in the center of which the shaft bearings are fixed. The number of sieve cells corresponds to the sufficient throughput of the mixer. A screw auger is installed on the shaft of the first mixing chamber under the loading hatch between the side wall and the blades to prevent stagnation of the incoming mass through the loading hole. The length of the screw auger corresponds to the length of the bottom of the loading hatch.

Due to the location of the shafts on one axis and their rotation in different directions, the formation of stagnant zones is excluded. The presence of a sieve with cells allows you to divide the mixture into layers and further redistribute the components with further mixing with the blades.

The reduction in energy consumption is the result of a reduction in the torque required to mix the mixture inside the mixer, and hence the power of the electric motors used.

In FIG. 1 shows a mixer circuit, side view. In FIG. 2 shows a section of a sieve with cells.

The mixer of FIG. 1 contains a housing 5 with loading 1 and unloading 7 hatches, consisting of two mixing chambers separated by a sieve 6, working bodies - shafts rotating in different directions, with blades 4 fixed along a helical line, which are driven by electric motors 2 and 8 s drive mechanisms. A screw auger 3 is installed on the shaft of the first mixing chamber under the loading hatch 1 between the side wall and the blades 3. The length of the screw screw corresponds to the length of the lower part of the loading hatch. Sieve 6 (Fig. 2) consists of cells, the number of which corresponds to a sufficient throughput of the mixer.

The mixer operates as follows. Through the loading hatch 1, the dosed components flow continuously into the first chamber of the mixer body, where, partially mixed, they are moved by the screw 3 of the shaft to the blades 4, which eliminates clogging of the mixer. The blades 4 of the shaft mix the components and advance the mixture to the sieve 6 with cells, which divides the mixture into layers entering the second chamber of the mixer, where they are displaced by the blade relative to each other and additionally mixed by the blades of the second shaft when moving to the discharge hole 7.

The use of the invention allows to improve the quality and uniformity of the resulting mixture due to the intensification of the mixing process, as well as reduce energy consumption.

Claims (3)

1. The mixer of highly viscous materials, comprising a housing with loading and unloading hatches and mounted in it in bearings with the possibility of rotation in different directions using electric motors through the drive mechanisms by shafts, with blades mounted on them along a helical line with the ability to adjust the angle of inclination, characterized in that the shafts are mounted on one axis of rotation, and the housing consists of two mixing chambers, separated by a sieve with cells, in the center of which the shaft bearings are fixed, under the loading hatch, ezhdu housing side wall and the lobes in the first mixing chamber shaft mounted screw auger. 2. The mixer according to claim 1, characterized in that the number of sieve cells corresponds to a sufficient throughput of the mixer. 3. The mixer according to claim 1, characterized in that the length of the screw corresponds to the length of the lower part of the loading hatch.

Images