SU1526797A1 - Mixer - Google Patents

Abstract

The invention relates to mixers and allows for a reduction in energy consumption with an increase in productivity, as well as to simplify the design. The mixer includes a housing, the cover of which is mounted on vertical racks fixedly mounted on the support. The bottom of the case is equipped with a vibration exciter and is connected to the cover with a wall of elastic material. The cover is equipped with blades attached to it, inclined to the vertical and horizontal planes. The vibration exciter is made in the form of an unbalance consisting of two spring-loaded masses mounted on pins fixed by means of a strip on the motor shaft. The racks are fitted with springs mounted on them, attached to the lid and the support with their ends, and the bottom is mounted on the racks so that they can be moved along them. 1 il.

Description

The invention relates to mixing and may be used in other industries for mixing dry sand mixtures or the like.

The aim of the invention is to reduce energy costs while increasing productivity and simplifying the design.

The drawing shows the proposed mixer.

The mixer includes a housing 1, the cover 2 of which is fixed on the vertical uprights 3. fixedly mounted on the support k. The bottom of the housing 5 is equipped with a vibration exciter 6 and connected to the cover with a wall 7 of elastic material. The lid 2 is provided with blades 8 attached to it, inclined to the vertical and horizontal planes, the biological exciter 6 is made in the form of an unbalance consisting of

two spring-loaded by means of springs 9 masses 10 mounted on studs 11 secured by strap 12 on the motor shaft 13. The unbalance in the exciter is necessary to increase the disturbing force, which is achieved by installing two masses 10, and spring 9 is used to reduce the starting motor torque.

Racks 3 are equipped with springs mounted on them 1. attached ends to the cover 2 and the support. 5 is mounted on a rack 3 with the ability to move along them. In the cover 2, a loading opening 15 is made, and in the bottom 5 - a discharge opening 1b.

The mixer works as follows.

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The electric motor 13 is turned on on the vibrating wake 6 and the mixture components are fed into the mixer through the filling opening 15. With an increase in the number of revolutions of the electric motor 13, the masses 10 under the action of centrifugal force move along the studs 11 and move away from the center of rotation, which causes an increase in the centrifugal and driving forces. Under the action of these forces, forced vibrations of the bottom 5 arise, and with it the mixture components. The stiffness of the springs k and the number of revolutions of the electric motor 13 are chosen so that the natural frequency of oscillation of the springs 1 must coincide with the oscillation frequency of the driving force of the vibration exciter 6. Therefore, the bottom 5 oscillates with ever increasing amplitude, i.e. in resonance mode (or about). Under the action of these vibrations, the mixture is stirred. When the bottom 5 moves upwards, the particles of the mixture fall on the inclined blades 8 and, reflecting from them, are intensively mixed. Having made a complicated movement in space, the particles of the mixture, moving from one blade to another, push the inclined blades 8 to the discharge opening 1b, from which the mixed mixture goes out continuously. The performance of the mixer depends on the amplitude and frequency of oscillation of the bottom 5 As the output from the discharge opening 1b of the finished mixture into the loading opening 15, new components of the mixture fall asleep.

The supports 3 are the frame of the mixer and, at the same time, the guides providing the vertical movement of the bottom 5. since this is the only way to convert the sinusoidal oscillations of the vibration exciter into the vertical oscillations of the bottom. With such a movement of the bottom, it is as if the mixture of particles of the mixture is put on stationary inclined blades, while the particles move from the blade to the blade with different speeds and different angles of meeting

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cove Since the angles of inclination of the blades are different, turbulent motion of the particles making up the mixture is achieved in the mixer. In this case, oscillating elastic walls contribute to this movement and exclude stagnant zones. All this ensures high quality mixing and the movement of the mixture inside the housing towards the discharge opening, which ensures continuous unloading of the finished mixture. The blades are angled to both the horizontal and vertical planes and attached to the lid in order to reduce the resistance to movement of the mixture relative to the blades and at the same time provide the direction of movement of the mixture to the unloading device.

The proposed mixer allows to significantly reduce the metal intensity of the mixer, which leads to a reduction in weight and simplify the design. Moreover, the maximum performance is obtained at the minimum cost of electricity.

Claims (1)

Invention Formula The mixer, comprising a housing, the lid of which is mounted on vertical racks fixedly mounted on the support, and the bottom is provided with an exciter and foot; Eno with a lid with a wall of elastic material, characterized in that, in order to reduce energy costs while increasing productivity and simplifying the design, the lid is provided blades attached to it, inclined to the vertical and horizontal planes, and the vibration exciter is made in the form of an unbalance consisting of two spring-loaded masses mounted on the heels, repented by means of a strap on the motor shaft, while the racks are fitted with springs mounted on them, attached to the lid and the support by the ends, and the bottom is mounted on the racks that can be moved along them.