RU154151U1 - TURBULENT TYPE CONCRETE MIXER FOR MANUFACTURE OF FIBER CONCRETE MIXES - Google Patents

Abstract

Turbulent type concrete mixer for manufacturing fiber-reinforced concrete mixtures, comprising a tank with an unloading device, breaker blades, an activator rotor, an electric motor mounted on a bed, characterized in that the rotor is made of a cylindrical shape with troughs inclined relative to its vertical axis at an angle from 9 to 43 °, providing the direction of the mixture upward flows.

Description

Turbulent type concrete mixer for the manufacture of fiber concrete mixtures

The utility model relates to devices for the preparation of concrete mixtures and can be used for the preparation of fiber-reinforced concrete mixtures.

A known mixer (see patent No. RU 116367, IPC B01E 7/00, published May 27, 2012) contains a mixing tank, a drive shaft and a mixing working body, which is made in the form of a shaft, installed at a certain distance from each other and arranged in rows in in the form of a comb with blades.

Known concrete mixer (see patent No.RU, C2, 2508987, IPC B28C 5/00, published March 10, 2014) containing a bed with a rotation drive, a drum with loading and unloading, a screw and blades mounted between its turns are fixed along the inner perimeter of the drum .

The closest analogue is (see invention SU 15922 A, B28C, publ. 11/22/1963) containing a tank with a discharge opening, rotor blades, rotor activator, electric motor mounted on a bed.

A disadvantage of the known device is the low uniformity of the distribution of the fibrous component in the volume of fiber concrete mixtures.

The objective of the utility model is to reduce the degree of clumping of the fibrous component of concrete mixtures.

The essence of the utility model is that a turbulent type concrete mixer for manufacturing fiber-reinforced concrete mixtures, containing a tank with an unloading device, breaker blades, a rotor-activator, an electric motor mounted on a bed, while the rotor is made of a cylindrical shape with gutters inclined with respect to its vertical axis from 9 to 43 degrees, providing the direction of movement of the mixture in ascending flows.

EFFECT: creation of a rotor-activator of a cylindrical shape with troughs inclined with respect to its vertical axis, designed to increase the uniformity of the distribution of the fibrous component in the volume of fiber-reinforced concrete mixtures.

The rotor-activator has a cylindrical shape with grooves, which are located at an angle to the vertical. During rotation of the rotor-activator, the mixture is captured in such a way that the fibrous component contained in it is carried away by upward flows, the direction of movement of which is regulated by the grooves of the rotor-activator. With this movement, the fiber does not stick to the rotor activator, and its lumps do not form, since during mixing it undergoes predominantly tensile forces arising in the volume of the mixture in the area of action of the launders of the rotor activator.

The essence of the utility model is illustrated by the drawing, which shows a diagram of a concrete mixer with a cylindrical rotor-activator.

Concrete mixer contains a discharge device 1 mounted on the tank 2 of a turbulent concrete mixer. Tank 2 is made cylindrical in the upper part and conical in the lower part. An unloading device 3 is arranged in the lower conical part of the tank 2, and in the center of the tank 2 there is a rotor-activator 4 with grooves 5. On the walls of the tank in its upper part there are jacking blades 6. The rotor-activator 4 is started by means of a V-belt transmission 7 by an electric motor 8. The tank 2 and the electric motor 8 with V-belt transmission 7 are installed on the frame - frame 9.

The preparation of fiber-reinforced concrete mixture is as follows: in the tank 2 of a working turbulent concrete mixer, water and dispersed particles of solid raw materials are dosed alternately. The start of the concrete mixer is carried out using an electric motor 8. The rotation of the rotor-activator 4 in the tank 2 is due to V-belt transmission 7. Thus, all components are subjected to dynamic action from the side of the rotor-activator 4 of the concrete mixer, as a result of which granular and fibrous dispersed particles of the raw material mixture are by the action of centripetal forces, they move to the walls of the tank 2. Having reached the walls, the mixture moves along them by inertia until they come into contact with the jack blades 6. The jack blades 6 are intended They are used to change the direction of motion of the components being mixed, so the mixture, as a result of a collision with the chipper, first moves to the center of tank 2 of the concrete mixer, and then, under the influence of gravitational forces, returns to the zone of operation of the rotor-activator 4. The grooved shape of the rotor-activator helps to regulate the direction of movement of dispersed particles fibrous form and, thus, reduce the degree of clumping in the volume of the concrete mixture.

Claims (1)

Turbulent type concrete mixer for manufacturing fiber-reinforced concrete mixtures, comprising a tank with an unloading device, breaker blades, an activator rotor, an electric motor mounted on a bed, characterized in that the rotor is made of a cylindrical shape with troughs inclined relative to its vertical axis at an angle from 9 to 43 °, providing the direction of the mixture upward flows.

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