SU1127774A1 - Mixer for making gypsum-based concrete mixes - Google Patents

Abstract

A MIXER FOR PREPARING PLASTIC CONCRETE MIXTURES, comprising a housing with loading and unloading openings, a hollow shaft located in it with a perforated end part AND with a distribution box mounted on it. 1 liter conical disk and mixing working bodies, characterized in that, in order to improve the quality of the gypsum-concrete mixture, the distribution conical disk is perforated, its upper surface is concentrically arranged and inclined at an angle of 40-60 ° C; the annular plates to the disk plane, and the lower fingers, the mixing tool, are located at the level of the loading opening and are made in the form of helical blades with combs attached to them, the ratio of the area of the loading opening to the perforation area of the distribution conical disk is 0.7-0 , 9, and the ratio of the area of perforation of the hollow shaft to the area of the loading Hole is 0.5-0.7.

Description

The invention relates to process equipment used in construction materials and the construction industry, and is intended for the production of gypsum-concrete mixtures based on gypsum concrete in ash and slag aggregates.

The closest is a mixer for the preparation of gypsum-concrete mixtures, comprising a housing with loading and unloading openings, a hollow shaft located in it with a perforated end part and with a distribution conical disk mounted on it, and mixing working elements 1.

Its disadvantage is that, when loading the dry components of the mixture under the action of a rapidly rotating distribution disk, there is an uneven distribution in the tandem and coarse aggregates throughout the chamber volume. A large, dense aggregate is distributed in the peripheral areas of the hull immediately upon loading, as a result of which it is not possible to obtain a homogeneous gypsum-concrete mixture. The peripheral parts of the working bodies under the action of coarser, more abrasive material are subject to rapid wear, which leads to frequent stops and repair and restoration work. Due to the irregularity of the gypsum-concrete mixture, the mortar component often sticks to the walls of the shaft and the housing, which also leads to stopping of the mixer and the need for disassembly and cleaning. In such a device, there is an mrsto frequent clogging of the loading opening, due to the reactive force from the shaft and the distribution disc, which leads to stops. All this worsens the quality of the concrete mix.

The aim of the invention is to improve the quality of the gypsum-concrete mix.

The goal is achieved by teM that in the mixer for the preparation of gypsum-concrete mixtures, comprising a housing with loading and unloading openings, a hollow shaft with perforated end part and mounted distribution disk mounted on it, and mixing working members, the distribution conical disk is perforated top surface of it

the annular plates are concentrically located and inclined at an angle of 40-60 ° to the disk plane, and the lower fingers are stirring the working member is placed at the level of the loading opening and are made in the form of screw blades with combs fixed to them, while the area of the loading opening is the perforation area of the distributing conical disk is 0.7-0.9, and the ratio of the perforation area of the hollow shaft to the area of the inlet opening is 0.5-0.7.

FIG. I shows the mixer, a general view; in fig. 2 shows section A-A in FIG. one.

5 The mixer consists of a housing 1 with a loading 2 and 3 discharge openings and a hollow shaft 4 located therein with a distribution disk 3. The end part of the shaft 4 is perforated and has working mixing organs 6 fixed on it. The upper surface of the distribution disk 5 is fitted with concentric inclined at an angle of 40-60 ° to the plane of the disk 5 ring plates 7, and the bottom - fingers 8.

5 On the drive shaft 4 at the level of the loading opening 2 screw blades 9 are made with combs 10 fixed on them.

The mixer works as follows. Mix plaster into a gang with fill in Lem and. additives are introduced through the loading opening 2 and then using screw blades 9 with combs 10 are fed into the housing 1. The mixture, hitting the distribution disk 5 through the perforations and plates 7, is evenly distributed throughout the entire volume of the housing 1. Simultaneously through the perforations of the drive hollow shaft 4 to housing 1, water is supplied. Under the action of the working mixing bodies 6 and the fingers 8, the components are mixed and the resulting gypsum-concrete mixture through the discharge opening 3 enters the post molding products.

The proposed device provides the preparation of high-quality gypsum concrete.

5 mixtures with evenly distributed coarse dense aggregate, which allows to obtain construction products with a uniform structure and high physicomechanical properties.

FIG. 2

Claims (1)

MIXER FOR PREPARING GYPES CONCRETE MIXTURES, comprising a housing with loading and unloading openings, a hollow shaft with a perforated end part and a distribution conical disk mounted on it, and mixing bodies, characterized in that, in order to improve the quality of the gypsum concrete mixture , the distribution conical disk is perforated, its upper surface has ring plates concentrically located and inclined at an angle of 40-60 ° to the plane of the disk, and the lower fingers, the mixing working element is located at the level of the loading hole and is made in the form of screw blades with combs fixed to them, while the ratio of the area of the loading hole to the perforation area of the distribution conical disk is 0.7-0.9, and the ratio of the perforation area of the hollow shaft to the area of the loading Hole is 0.5-0.7. FIG. 1