SU1122515A1 - Mixer for preparing building mixes - Google Patents

Abstract

A MIXER FOR PREPARING CONSTRUCTION MIXTURES, containing a sealed fixed housing, inside of which rotary mixing blades electrically connected to a step-down transformer, and disc rollers with internal reflectors, are designed to rotate, so as to improve performance and reliability mixer, the blades in the places of attachment are equipped with electrical insulators, made with longitudinal slits 1.0–1.5 wide, the blades thick and electrically interconnected , and opposite parts of each blade are connected to the transformer with respect to the slot.

Description

I1

The invention relates to the field of construction, in particular to the technology of preparing building mixtures with their simultaneous heating.

Closest to the invention, the technical essence is a mixer for preparing building mixtures, comprising a sealed fixed housing, inside of which mixing blades electrically connected with a step-down transformer and disc rollers with internal reflectors Co are rotatably mounted.

The disadvantages of the known mixer are the overloading of electrical equipment in connection with the intensive increase in temperature and the increase in operating costs due to the systematic necessity of washing and cleaning the blades and electrodes.

The purpose of the invention is to increase the performance and reliability of the mixer.

The goal is achieved by the fact that, in a mixer for preparing building mixtures, containing a sealed fixed housing, inside which the mixing blades electrically connected with a step-down transformer and disk rollers with internal reflectors, are mounted on a traverse, the attachment points are equipped with electrical insulators, are made with longitudinal slits 1.0–1.5 wide, the thickness of the blade and are electrically connected to each other, and the opposite relative to the transformer are connected slit of each blade.

Figure 1 shows the proposed device, the plan; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a schematic of a series electrical connection of the blades of the mixer; in fig. 4 shows a circuit for parallel electrical connection of the mixer blades

A mixer for preparing construction mixtures consists of a sealed fixed housing 1, inside of which, on the traverse 2, electrically insulated 11 and 3 are installed and fixed mixing blades 4 with longitudinal slots 5, blades 1-1.5 thick.

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The selected slit value prevents the concrete mixture from switching between the slits in the electrical circuit.

The body of the mixer has a boot 6 and a discharge pipe 7. The blades 4 and disc rollers 8 are driven by an electric motor 9 connected through a gearbox 1 to the axial drive shaft of the mixer 11. The terminals 12 of the secondary winding of the transformer 13 are connected to the blades at the places t4 attached to the cross bar, and the primary voltage is applied through the brush contacts 15., The blades 16 of the mixer are electrically interconnected and connected to the transformer via the supply cables 17 of the secondary winding.

The mixer works as follows.

The components of the mixture are fed into the mixer body through the loading nozzle 6 with rotating blades included in an electrical circuit with a voltage of 3-6 V transformed from an industrial electrical network with a frequency of 50 Hz and a voltage of 220 or 380 V. In this case, the electric current passing through The section of the blades heats them and the heat released during the mixing process of the mixture is transferred last, raising its temperature. The electrical activation of the blades can be accomplished both sequentially (Fig. 3) and parallel (Fig. 4), which is not significant. To monitor the progress of the temperature rise, any instruments designed to measure temperatures can be used.

After cooking and heating, the mixture is drawn through the discharge pipe.

The use of the proposed mixer allows you to select the constant electric power of the device, which ensures the absorption of thermal energy required to heat a given volume of the mixture over a set time, thereby avoiding electrical equipment overload, and thus increasing the reliability of the mixer. The use of mixer blades as a source of heat energy, which transfer heat simultaneously to all

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components of the mixture (aggregate, mixer capacity 1.5 times HP

P. kip.emus dielectric, n liquid, depending on the electrophysical

phase), it allows to increase the production-properties of the mixture.

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Claims (1)

MIXER FOR PREPARING CONSTRUCTION MIXTURES, comprising a sealed stationary box, a pus, inside of which are mounted on a traverse rotatably mixing blades electrically connected to a step-down transformer, and disk rollers with internal reflectors, characterized in that, in order to increase productivity and reliability of the mixer., the blades at the attachment points are equipped with electrical insulators, are made with longitudinal slots with a width of 1.0-1.5 blade thickness and are electrically connected to each other, than with the transformer connected opposite relative to the slot parts of each blade. Shega /