RU2060808C1 - Vibrating mixer - Google Patents

Abstract

FIELD: mechanical engineering. SUBSTANCE: equalizer is disposed in mixer above central part of apparatus housing and is made in the form of chutes placed on above another. The chutes have shape of half-cylinders of variable length. Outgoing ends of chute have slanting cut. EFFECT: enhanced quality of finished mixture of loose materials, expanded technological opportunities of apparatus. 3 dwg

Description

 The invention relates to the mixing of bulk materials, in particular to mixing devices, and can be used, for example, in the chemical, animal feed, food and other industries requiring the preparation of high-quality mixtures.

Known vibration mixer containing mixing elements evenly mounted on a flat bottom of the housing having an upper loading and lower discharge ends associated with a vibrator [1]
Known vibration mixer containing mixing elements evenly mounted on a flat inclined bottom of the housing having an upper loading and lower unloading ends associated with a vibrator, as well as a lateral movement of the mixed material with a separate vibrator [2]
The disadvantages of the design of such mixers are the low quality of the finished mixture of bulk materials, expressed in its high heterogeneity, as well as the narrow technological capabilities of the apparatus.

Closest to the invention in technical essence is a vibration mixer comprising a housing with upper loading and lower unloading parts. And mixing elements uniformly fixed on the flat bottom of the housing associated with the vibrodrive, as well as an equalizer located perpendicular to the loading part of the housing, connected to the housing via a common vibrodrive and made in the form of a gutter of rectangular cross section [3]
The disadvantage of this design of the mixer is the low quality of the finished mixture of bulk materials, expressed in its high heterogeneity, as well as the narrow technological capabilities of the apparatus.

 So, in the case of mixing ingredients with significantly different physical and mechanical characteristics, they do not ensure uniformity of their descent along the oblique sections of the equalizer channels, the possibility of “layer” creep of ingredients in the equalizer is excluded, and mixing directly in it is completely excluded. This, in turn, completely eliminates the possibility of preparing the primary mixture (semi-finished product) necessary to obtain a high-quality final product.

 The purpose of the invention is improving the quality of the finished mixture of bulk materials and expanding the technological capabilities of the apparatus.

 The goal is achieved by the fact that in the vibration mixer the equalizer is located above the central axis of the apparatus body and contains a block of gutters placed one above the other in the form of half-cylinders of variable length, while the output ends of the gutters have an oblique cut.

 In FIG. 1 shows a structural diagram of a mixer; in FIG. 2 structural equalizer; in FIG. 3 mixer, top view.

 The vibration mixer comprises a housing 1 with an upper loading 2 and lower unloading 3 parts, moving elements 4, evenly mounted on its flat inclined bottom 5, as well as a vibrator 6 and equalizer 7. The equalizer 7 is located above the central axis of the housing 1 of the apparatus from the side of the loading part 2 and contains a block of gutters 8 arranged one above the other in the form of half-cylinders of variable length, fastened by the walls 9. The output ends 10 of the gutters 8 have an oblique cut. The housing 1 of the apparatus, as well as the equalizer 7, are driven from a common vibrator 6 and are fixed by means of springs 11 on the frame 12.

 Vibration mixer works as follows.

 First, a vibration drive 6 is turned on. The apparatus body 1 and the equalizer 7, fixed by means of springs 11 on the frame 12, begin to oscillate in order to create effects of vibrationalization or boiling in the bulk material layer. Their amplitudes and vibration frequency for a specific set of ingredients are selected in such a way as to obtain a finished product with a given quality at the output of the device. Then, in each of the grooves 8 of the equalizer 7, is fed by ingredient.

 The main purpose of the equalizer is to smooth out fluctuations of the feed stream coming into it from the dispenser. If, for example, a volumetric portioned batcher works in conjunction with a mixer, then the heaps (portions) of bulk material falling on the vibrating trough, under the influence of directed vibrations, move along the troughs in the direction of the output ends 10, spread in the transverse and especially in the longitudinal direction, trying to accept the equilibrium state (condition of a flat surface). In this case, the best results are obtained when the angle of elevation of the output end of the gutter is 0-7 degrees to the horizon. Having passed along the upper shortest groove 8, the ingredient leaves its output end 10 and enters the layer of ingredient moving along the lower located groove. Here the two streams are connected, turbulized and mixed. This composition, moving away from the output end 10 of the second trough, getting on the third. The preliminary preparation of the product in the equalizer on all its troughs is similar. At the exit of the equalizer, that is, at the exit from the output end 10 of the lower trough 8, the stream is a primary mixture of ingredients.

 The presence of several gutters located one above the other, pursues the goal of uniform (layer-by-layer) distribution of the ingredients and their preliminary mixing. It should be noted that in many cases it is required to mix the ingredients in ratios of 1:50 or more, therefore, to obtain the finished product with a given quality, the method of "sequential dilution" is used. For this, a low-flow ingredient is mixed with a part of the high-flow ingredient, and then this composition is added to the main stream of the second ingredient, artificially achieving reduction in ratios.

 The placement of the equalizer 7 above the central axis of the apparatus body 1, as well as the semicircular section of the grooves fastened by the walls 9, exclude the formation of stagnant and dead zones. The output ends 10 of the grooves 8 have an oblique cut, which ensures high accuracy of the distribution of the outgoing flow along the axis of the apparatus both when the flow goes from the gutter to the gutter, and when the primary mixture flows from the lower gutter to the loading part 2 of the housing 1, where on the mixing elements 4 fixed on the inclined bottom 5 of the housing 1, the semi-finished product is finally brought to condition.

 The finished mixture of bulk materials is taken from the unloading part 3 of the housing 1.

 Using the proposed vibration mixer provides, in comparison with the prototype, such advantages as increasing the uniformity of the finished product by 2-2.5 times, the possibility of preparing a semi-finished product in the equalizer, and also obtaining the specified quality of bulk materials with a wide range of physical and mechanical characteristics.

Claims (1)

 A vibration mixer comprising a housing with upper loading and lower unloading parts, mixing elements evenly mounted on a flat inclined bottom of the housing, as well as an equalizer located above the loading part of the housing, connected to the housing by means of a common vibration drive and made in the form of a chute, characterized in that the equalizer is located above the central part of the apparatus body and contains a block of gutters placed one above the other in the form of half-cylinders of variable length, while the output ends of the gutter CWA has a bevel cut.

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