SU1211055A1 - Activating mixer - Google Patents

Description

The invention can be used in the production of building materials and the mining industry, for example, for preparing hardening filling mixtures based on cements.

The aim of the invention is to improve the quality of mixtures due to the intensification of the mixing process.

FIG. 1 shows an activator mixer, general view, section; in fig. 2 shows section A-A in FIG. one.

The activator-mixer is a cylindrical body 1, in which two identical working bodies are located on the horizontal drive shaft 2 at the opposite ends of the body. The working bodies consist of disks 3, between which rods 4 are mounted, arranged in concentric circles. The internal disks 3 are made in the form of hubs with windows and radial protrusions 5, in which rods 4 are fixed, the rods 4 of one working element being displaced along circumference relative to the rods 4 of the other working body at half the distance (pitch) between the protrusions 5. Each working body has its own boot nipple 6. In the central part of the housing 1 between the working bodies there is formed a connecting chamber 7, in the bottom the part of which is located discharge port 8. To reduce wear of the housing 1, fixed rods 9 are fixed along its circumference.

The activator mixer works as follows.

The body 1, through the loading nozzles 6, supplies the components of the filling mixture to the working bodies in which the mixture is exposed to the rotating rods 4 of the working bodies. When this occurs, the destruction of large grains in the suspect (more than 20 µm), the breakdown of the protective shells of the partially reacted grains in the suspect and their activation. At the same time, the filling mixture from the working bodies through the windows between the protrusions 5 in the hubs of the inner disks 3 enters the additional mixing chamber 7, where the two rotating threads are connected into One common. Due to the fact that the rods 4 of the working bodies are displaced relative to each other, the opposing streams are in different phases and, inserted into each other, contribute to a more intensive movement of the components and their uniform displacement in the volume of the mixture. At the same time, the process of mixing significantly improves, since in this case the components of the mixture in the additional mixing chamber have variable direction, speed and movement pattern.

In order for the mixing process to be most effective, the additional mixing chamber 7 has dimensions that provide a constrained flow of flows into a volume equal to 1.2-1.4 volumes of the mixing chamber of each working member, the ratio of length and diameter of 1.1 - 1, 2 The duration of exposure to the treated mixture in such a sms activator increases 2-2.5 times. This leads to an increase in the uniform distribution of the components in the mixture volume, the restoration of the activity of the grains in the hydrated shells when they break away from them and the achievement of a more complete depth of hydration.

The use of the proposed mixer-activator makes it possible to increase the efficiency of using a gangster by 12–15% due to the intensification of the mixing process, uniform distribution to the ghost in a mixture, and improving the structure formation conditions.

Aa

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Claims (2)

1. MIXER-ACTIVATOR, comprising a cylindrical body with loading and unloading nozzles and mounted on a horizontally mounted drive shaft working body in the form of disks interconnected by rods parallel to each other along concentric circles, characterized in that, in order to improve the quality of the mixtures due to intensification the mixing process, it is equipped with an additional working body fixed to the drive shaft with an individual loading nozzle, and the working bodies are placed at t rtsam symmetrically about its vertical axis to form therebetween an additional mixing chamber, which is limited by the internal wheels working bodies, formed as the hub with windows and with radial projections fixed to these rods circumferentially offset by half the distance between opposite protuberances of the hub. 2. The activator mixer according to π. 1, characterized in that the additional mixing chamber has a volume 1.2-1.4 times the volume of the mixing chamber of each of the working bodies, and the ratio of its length to diameter is 1.1-1.2.