RU148474U1 - GRAVITY MIXER - Google Patents

Abstract

A gravity mixer containing a rotating drum with blades and a rotation drive installed in a support, a vibrator with kinematic excitation of vibrations and a rotation drive is cantilevered inside the drum, the vibrator is made with a housing mounted on the crankshaft so that its longitudinal axis makes 5- with the axis of the drum 10 °, one end of the housing is coaxially connected to the bottom of the drum using an elastic element, and the second is supported by a spherical bearing on the connecting rod support of the crankshaft, on which the disc Lance made with the function of dynamic balancing of unbalanced masses, characterized in that the body is made in the form of a thin-walled metal truncated ellipse.

Description

The utility model relates to devices for mixing concrete mixture and can be used in the construction materials industry, in construction and other areas of the construction industry for the production of multicomponent mixtures. Currently, one of the urgent aspects of the development of the construction industry is monolithic construction, an important role in which is given to the preparation of concrete mixtures at the initial stage of production. Analysis of various sources makes it possible to detect the diversity of existing industrial concrete mixing machines implemented on the basis of machining in order to obtain high-quality concrete mixtures, i.e. getting them as uniform as possible in composition. The latter, in particular, makes it possible to distinguish the method of vibrational treatment of concrete mixtures, which has been tested by time and many scientific works, both in a single case and in combination with conventional mechanical activation.

The prior art various devices that are implemented on this basis.

For example, vibration mixers are known (Patent RU 2494795 C1, 10/10/2013, B01F 11/00; Patent RU 2494796 C1, 10/10/2013, B01F 11/00; Patent RU 2494797 C1, 10/10/2013, B01F 11/00; Patent RU 2494798 C1, 10/10/2013, B01F 11/00; Patent RU 2494799 C1, 10/10/2013, B01F 11/00; Patent RU 2494800 C1, 10/10/2013, B01F 11/00; Patent RU 2494801 C1, 10/10/2013 , B01F 11/00; Patent RU 2494802 C1, 10/10/2013, B01F 11/00; Patent RU 2494803 C1, 10/10/2013, B01F 11/00; Patent RU 2494804 C1, 10/10/2013, B01F 11/00; RU patent 2494805 C1, 10.10.2013, B01F 11/00; Patent RU No. 2494862 C1, 10.10.2013, B01F 11/00; Patent RU 2495710 C1, 10.20.2013, B01F 11/00; Patent RU 2496562 C1, 10.27.2013, B01F 11/00; Patent RU 2496563 C1, 10.27.2013, B01F 11/00; Patent RU 2496564 C2, 10.27.2013, B01F 11/00; Patent RU 2496565 C2, 10.27.2013, B01F 11/00; Pat t RU 2496566 C2, 10.27.2013, B01F 11/00; Patent RU 2496567 C1, 10.27.2013, B01F 11/00; Patent RU 2496568 C1, 10.27.2013, B01F 11/00; Patent RU 2496569 C1, 10.27.2013 B01F 11/00; Patent RU 2497665 C1, 11/10/2013, B28C 5/16, B01F 11/00; Patent RU 2497666 C1, 11/10/2013, B28C 5/16, B01F 11/00; Patent RU 2497667 C2, 11/10/2013, B28C 5/16, B01F 11/00) containing a mixing chamber with loading and unloading windows for materials and a rotor with blades. In the lower or lower and upper parts of the mixing chambers in the center, one or two vibrators are rigidly fixed, made in the cases, with vibration fields being excited

by means of lower or lower and upper crank mechanisms. At the same time, the vibrator bodies are made in the form of corrugated metal shells with different geometry of rotation bodies.

Also known is a rotary vibration mixer with a ring magnetostrictive transducer (Patent RU 2318586 C2, 03/10/2008, B01F 11/00), comprising a mixing chamber, a rotor with a rotary drive made with blades, a vibrator, characterized in that the vibrator is made in the form of a radiating high-frequency vibrations of the pipe with the disk and is rigidly fixed in the middle of the mixing chamber.

Also known is a rotary mixer with a mechanical vibration exciter (Patent RU 2297274 C1, 04.20.2007, B01F 11/00), comprising a mixing chamber, a rotor with a rotary drive, made with blades, a vibrator made in the form of disk springs with rubber shock absorbers, and rigidly fixed in the middle of the mixing chamber. The vibrator has a crank mechanism, with the help of which the Belleville springs excite particle vibrations in the horizontal direction. In the mixer, it is possible to adjust the intensity of the vibration by changing the speed of the drive of the crank mechanism.

The main disadvantage of these designs of mixers is the limited use of mixed materials, especially hard concrete mixes. The closest analogue is a gravity mixer (Patent RU 2033326 C1, 04/20/1995, B28C 5/18) containing a drive drum with a bottom and blades, a vibrator located in the drum, characterized in that the vibrator is made in the form of a hollow cylinder and unbalances fixed to a crankshaft connected to the drive shaft, the axis of the cylinder being located at an angle of 5-10 ° to the axis of the drum, while the connecting rod journal of the shaft is connected to the hollow cylinder by a spherical bearing located at a distance of (0.2 0.3) L from the bottom of the drum where L is the length of the drum.

The main disadvantage of this mixer can be attributed to the lack of efficiency of the mixing process due to the implementation of the vibrator body is strictly cylindrical in shape.

The technical result is to expand the arsenal of technical means and ensure the achievement of new properties by the claimed objects. That is, the realization of the possibility of creating increased intensification of the mixing process as a whole is provided.

The technical result is achieved by the fact that a gravitational mixer containing a rotating drum with blades and a rotation drive installed in the support, a vibrator with kinematic excitation of oscillations and a rotation drive is cantilevered inside the drum. The vibrator is made with a housing mounted on the crankshaft so that its longitudinal axis is 5-10 ° with the axis of the drum. One end of the housing is coaxially connected to the bottom of the drum by means of an elastic element, and the other is supported by a spherical bearing on the connecting rod support of the crankshaft, on which an imbalance is made, made with the function of dynamic balancing of unbalanced masses. Moreover, the body is made in the form of a thin-walled metal truncated ellipse.

The essence of the utility model is illustrated by the drawing: in FIG. 1 shows a diagram of a gravitational mixer.

The gravity mixer contains a rotating drum 1 with blades 2 and a rotation drive 3 installed in the support 4, a vibrator 5 with kinematic excitation of oscillations and a rotation drive 6 is cantilevered inside the drum. The vibrator is made with a housing 7 mounted on the crankshaft 8 so that its longitudinal axis is 5-10 ° with the axis of the drum. One end of the housing 7 is coaxially connected to the bottom of the drum by means of an elastic element 9, and the second is supported by a spherical bearing on the connecting rod support 10 of the crankshaft 8, on which an imbalance 11 is placed, made with the function of dynamic balancing of unbalanced masses. Moreover, the housing 7 is made in the form of a metal thin-walled truncated ellipse.

The device operates as follows: when the actuators 3 and 6 are turned on, the rotating drum 1 and the vibrator 5 acquire a working movement. The mixture, raised by the blades 2 upwards under the action of gravitational forces, enters the housing 7 of the vibrator 5. In contact with the housing 7, made in the form of a thin-walled metal truncated ellipse, the structure of the mixture is destroyed, which intensifies the mixing process.

The use of a vibrator with a housing of the proposed design ensures the constancy of vibration parameters, does not depend on the structural and rheological properties of the mixture and expands the range of mixed materials.

The inventive design exhibits new properties not known in the art. The essential features are technical in nature and are identifiable. The set of essential features of the claimed device is necessary and sufficient to obtain the required technical result. The claimed combination of features provides an unexpected, unusual ultramodern technical result that exceeds the technical result obtained from each significant feature separately in relation to objects of the specified purpose. The inventive object provides a change in the prior art by non-obvious means, gives the objects new positive properties, satisfies long-term demand and increases the competitiveness of the patented object. Between the essential features of the claimed solution and the achieved technical result there is a causal relationship. The set of essential features of the proposed solution provides a new unusual principle of operation of objects, which is as effective as possible for objects of this purpose.

Claims (1)

A gravity mixer containing a rotating drum with blades and a rotation drive installed in a support, a vibrator with kinematic excitation of vibrations and a rotation drive is cantilevered inside the drum, the vibrator is made with a housing mounted on the crankshaft so that its longitudinal axis makes 5- with the axis of the drum 10 °, one end of the housing is coaxially connected to the bottom of the drum using an elastic element, and the second is supported by a spherical bearing on the connecting rod support of the crankshaft, on which the disc Lance made with the function of dynamic balancing of unbalanced masses, characterized in that the body is made in the form of a thin-walled metal truncated ellipse.

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