RU2398678C1 - Vibration concrete mixer - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to devices intended for preparation of concrete mixes. Mixer housing is made up of sections mounted on perimetre of two rectangles and two parallelograms connected in turn to form quadrate on section end faces. Note here that quadrate of each subsequent section is turned through 180° with respect to previous one. Note also that aforesaid housing is mounted on foundation by means of a frame with air cylinders incorporated with proposed mixed additionally.

EFFECT: expanded performances.

Description

The invention relates to devices for the preparation of mortars and concrete mixtures.

Known concrete mixer (AS No. 1199622, class B28C 5/14, 1982), containing a housing with loading and unloading holes and with a working mixing body, longitudinally located in it and equipped with a vibratory tray under the unloading hole.

A disadvantage of the known device is the insufficient intensity of the interaction of the components of the solutions and concrete mixtures, limited technological capabilities.

Closest to the proposed invention is a concrete mixer (RF patent No. 2044643, CL. B28C 5/18, 1995), containing a housing equipped with a drive in the form of interconnected elements with the formation of a multifaceted outer and inner surfaces.

A disadvantage of the known device is the insufficient intensity of the interaction of the components of the solutions or concrete mixes, limited technological capabilities.

The technical solution to the problem is the expansion of technological capabilities by giving the components of mortars or concrete mixtures a spatial zigzag motion and the simultaneous influence of vibrations on them in three mutually perpendicular directions.

The technical solution is achieved by the fact that in a vibratory concrete mixer containing a drive body in the form of interconnected elements with the formation of multifaceted outer and inner surfaces, the housing is made of sections mounted around the perimeter from alternately connected two rectangles and two parallelograms with the formation of square sections at the ends while the square of each subsequent section is rotated relative to the previous one by an angle of 180 °, and the housing is placed on the bed by means of a device ystvo frame with bellows.

According to the patent literature not found a technical solution similar to the claimed, which allows to judge the inventive step of the vibratory concrete mixer.

The novelty of the invention lies in the fact that technological capabilities are expanded by giving the components of mortars or concrete mixtures a complex spatial zigzag motion and simultaneous exposure to oscillations in three mutually perpendicular directions excited by the geometry of the body during asymmetric movement of the masses of the components of the mortars and concrete mixtures in the violation of the stationary motion of their flows by the geometric zigzag shape of the body, their mutual position relative to each other and to the axis of rotation.

The novelty also lies in the fact that the centers of symmetry of the inner surface of the body in each of its cross-sectional elements along its length are displaced relative to the axis of rotation of the body, which violates the stationary motion of the particles of the components of the mortar or concrete mixes and expands the technological capabilities.

The invention is illustrated by drawings, where: in Fig.1 shows a vibrating concrete mixer, General view; figure 2 is a section aa in figure 1; figure 3 - the housing of the concrete mixer, axonometric projection; 4 is a diagram of the assembly of sections of the housing, connected, for example, by welding.

Vibrating concrete mixer (figure 1, figure 2) consists of a housing 1, loading 2 and unloading 3 devices and a drive (not shown). The housing 1 is equipped with bushings 4 and 5 with the possibility of rotation in the bearing bearings 6 and 7. The toe 8 of the loading device 2 enters the hole of the sleeve 4 of the housing 1. The loading device 2, the bearing bearings 6 and 7 with the housing 1 mounted in them, are mounted on the frame 9. The frame 9 is placed on four pneumobalons 10, which are mounted on the bed 11. The vibrating concrete mixer is equipped with a pipe 12 for supplying mixing water at a distance L from the inlet of the housing 1.

The housing 1 (Fig. 3) is made of sections 13 mounted (Fig. 4) from two rectangles B and two parallelograms C, connected in pairs with their sides to each other. The sections are connected into the housing 1 by the remaining free sides that are equal to each other and forming a square after each section is rotated through 180 ° relative to the previous section. Thus, a zigzag drum is created in which the axis of each section is alternately at an angle to the axis of rotation, i.e. to the transportation line of mortar components and concrete mixtures from loading to unloading. The bed 11 is equipped with a device for adjusting the inclination (not shown) in order to control the speed of movement of the components of the mortars and concrete mixtures from loading to unloading.

Vibratory concrete mixer works as follows.

In the housing 1, through the loading device 2, components of mortars or concrete mixtures (cement and inert - sand, gravel, etc.) flow in a continuous stream. When the housing 1 is rotated, the components of the mortars or concrete mixtures are given a complex spatial zigzag motion with superposition of oscillations in three mutually perpendicular directions excited by the geometry of the housing 1 during asymmetric movement of the loading masses and the occurrence of unbalance as a result of the disruption of stationary motion of the flows of the components of the mortars or concrete mixtures by the geometric shape sections, their relative position relative to each other and to the axis of rotation. Moreover, the centers of symmetry of the inner surface of the housing 1 in each of its cross-sectional elements along its length are displaced relative to the axis of rotation of component 1, which violates the stationary motion of the particles of the components of the mortars or concrete mixtures. Due to the simultaneous effect of the complex spatial motion of the particles of the components of the mortars, concrete mixtures and their low-frequency vibrations, not only the miscibility of the mortar components, concrete mixtures, but also their intensity of interaction with each other and with the walls of the housing 1. The masses of the components of the mortars or concrete mixtures, mixed in the dry state are moved inside the housing 1 from loading to unloading at a distance L, where mixing water is supplied through line 12. With the further movement of the components of the solutions or concrete mixtures, the process of their mixing and preparation takes place. Ready mortars or concrete mixtures through the sleeve 5 are discharged into the unloading device 3.

Technical and economic advantages arise due to giving the components of mortars or concrete mixtures a complex spatial zigzag motion and simultaneous exposure to vibrations in three mutually perpendicular directions, which increases the intensity of mixing, increases the energy consumption of the interaction of the components of mortars or concrete mixtures with each other, with the walls of the housing 1 and expands technological capabilities.

Claims (1)

A vibrating concrete mixer comprising a drive body with a drive in the form of interconnected elements with the formation of multifaceted outer and inner surfaces, characterized in that the housing is made of sections mounted around the perimeter of two rectangles and two parallelograms alternately connected to form square sections at the ends, while the square of each subsequent section is rotated relative to the previous one by an angle of 180 °, and the housing is placed on the bed by means of a frame with a pneumobox introduced into the device llonami.

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