RU2149756C1 - Mixer for dry mixtures - Google Patents

Abstract

FIELD: mixing equipment for dry mixtures; manufacture of building materials; chemical and food- processing industries. SUBSTANCE: mixer used for two mixtures includes distributing member mounted in bin and made in form of shell connected with drive shaft by means of fins. Shell has generatrices over its perimeter of different heights. EFFECT: simplification of construction. 2 dwg

Description

 The invention relates to technological equipment used for the preparation of dry mixes, and can be used in the construction materials industry, chemical and food industries.

 A known mixer (US 4506982 B 28 C 5/16, 03/26/1985), comprising a housing, a vertical shaft with rotors fixed to it with ribs and a disk. Mixing occurs due to the movement of material between the rotors and the disk. Such a process is associated with high energy consumption.

 The closest technical solution to the proposed device is a device (SU 1278236 B 28 C 5/16, 1985), which contains a hopper with conical partitions, a vertical shaft with conical distribution elements fixed to it in the form of a shell.

 Mixed materials through conical partitions are fed to distribution elements, from where they are scattered around the perimeter of the hopper due to the action of centrifugal forces.

 The disadvantage of this device is the design complexity associated with the presence of several distribution elements.

 The aim of the present invention is to simplify the design.

 This goal is achieved by the fact that in a mixer for dry mixtures containing a drive shaft vertically mounted in the hopper with a distribution element in the form of a shell mounted on it with ribs, the shell is made with uneven generators around its perimeter.

 Thanks to such a device, only one distribution element is required, which simplifies the design of the mixer.

 During the operation of the mixer, the material moves inside the distribution element.

 The ribs located inside the shell form compartments, and due to the fact that the shell has different height generators, the time of movement of the material along the compartment under the influence of gravity is different for each compartment, therefore, the material is unloaded from the compartments during rotation of the distribution element at different points around the perimeter of the hopper, which provides uniform distribution of material and high quality mixing.

 In FIG. 1 shows a General view of the proposed device.

 In FIG. 2 shows a view of a distribution element.

 The mixer includes a driving electric motor 1, feed chute 2, distribution element 3, hopper 4.

 The distribution element 3 in the form of a shell 6 connected to the drive shaft 5 by means of ribs 7.

 The device operates as follows.

 The components of the mixture are fed into the boot chute 2. From the heat, the components of the mixture enter the distribution element 3, rotated by the electric motor 1, and fall into one of the compartments formed by the ribs 7 and the surface of the shell 6.

 Under the action of gravity, the material moves down the inner surface of the distribution element and at the same time rotates at a certain angle determined by the high generatrix of the shell corresponding to each compartment.

 The material is distributed evenly around the perimeter of the hopper and mixed.

 The components are mixed due to impact on the ribs at the entrance to the distribution element, the action of centrifugal force inside the distribution element, impact on the walls of the hopper and uniform distribution of material around the perimeter of the hopper.

Claims (1)

 A mixer for dry mixtures, containing a distribution element in the form of a shell vertically mounted in the hopper, connected to the drive shaft by ribs, characterized in that the shell is made with uneven generatrices around its perimeter.

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