RU2737404C1 - Method for preparing therapeutic fodders in a ball mixer - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural production, in particular, to a method for preparing therapeutic fodders in a ball mixer. Method involves obtaining a primary premix in a blending mixer for primary premixes and mixing the primary premix with filler. Mixing of primary premix and filler is performed in ball mixer in fluidized bed, which is created by ejecting the mixture with blades made along the Archimedes spiral by concavity in the disc rotation direction, on the inner surface into the upper part of the working chamber, made in the form of a truncated sphere, where the guiding fairing, forming the surface of which is represented by an evolvent with the coordinate origin at the lower part of the loading lock, smoothly changes the mixture flow movement from below upwards to the downward movement, and along the concave generatrix of the particle displacement cone, surface of which is made with a constant angle of inclination of 9-21°, moves the flow from the center of the drive disc to the edge of the blades concave along the rotation direction, after which the therapeutic fodder is unloaded into the container.

EFFECT: use of the invention will make it possible to increase homogeneity of the therapeutic fodders mixture.

1 cl, 3 dwg

Description

The invention relates to agricultural production, namely to methods of preparing feed mixtures, as well as mineral and vitamin feed additives, and can be used on livestock farms and feed mills.

Known "Method of two-stage dosing and mixing of feed components" (US Pat. RU No. 2075300 C1, A23N 17/00, 22.06.94), which uses a mobile dispenser, separator, grinder and mixer located in series. The method is cumbersome and requires a lot of equipment.

The known method is carried out in an installation for the preparation of premixes and feed mixtures (US Pat. RU No. 2289974 C1, A23N 17/00, 21.06.2005). This installation implements a two-stage method for preparing premixes and feed mixtures.

However, the above method does not provide the required mixing quality, since the first stage of mixing is carried out in a centrifuge in the form of a truncated cone, in which the material under the action of centrifugal force is pressed against the inner walls of the mixer by a layer and mixes poorly.

The low homogeneity of mixing at the second stage is due to the fact that the working body of this mixer, made in the form of a truncated cone with a helical guide, does not provide intensive mixing, because material waddles between layers.

The mixers are interconnected by means of a spiral-screw conveyor and when the mixture moves (forced movement), the mixed premix is subjected to segregation (separation of components) according to its physical and mechanical properties.

The closest in terms of the principle of mixing is the "Method for the preparation of feed mixtures" (RU 2635365 C1 A23N 17/00 (2006.01), taken as a prototype, in which the feed mixture is obtained by moving the mass of the mixed material with a firewood by centrifugal forces created using blades 7 and 8 that copy the inner surface spheres.

However, it was found that the components to be mixed under the action of centrifugal forces created by the blades on the surface of the blades and the inner surface of the sphere are separated (Syrovatka V.I. Electrification of agriculture, works, volume XIV, M. Kolos, 1964, pp. 112-114).

The objective of the present invention is to create a method in which the mixing of feed is carried out by moving the ingredients and convectively mixing them in the entire volume of the ball mixer and on inclined surfaces in a fluidized bed mode.

The task is achieved by the fact that in the method of preparing medicated feed in a ball mixer, which includes obtaining a primary premix in a grinder-mixer for primary premixes and mixing the primary premix with a filler, characterized in that the mixing of the primary premix and the filler is carried out in a ball mixer in a fluidized bed, which is created by ejecting the mixture with blades made in an Archimedes spiral with concavity in the direction of rotation of the disk, onto the inner surface in the upper part of the working chamber, made in the form of a truncated sphere, where the guide fairing, the forming surface of which is represented by an involute with the origin at the bottom of the loading sluice smoothly changes the movement of the mixture flow from bottom to top to movement from top to bottom, and along the concave generatrix of the particle displacement cone, the surface of which is made with a constant inclination angle of 9-21 °, transfers the flow from the center of the drive disk to the edge of the concave loops along the direction of rotation tei, after which the medicinal food is unloaded into the container.

The essence of the invention is illustrated by Fig. 1 - a ball mixer for medicinal feed, Fig. 2 - view A and Fig. 3 - view B. A ball mixer for the preparation of medicinal feed contains a chopper-mixer 1 (figure 1), a loading device 2, a loading gateway 3, connecting them with a ball mixer 4, consisting of a working chamber 5, made in the form of a truncated sphere, a guide fairing 6, the forming surface of which is represented by an involute with the origin at the bottom of the loading sluice 3, blades 7 with bumpers 8 fixed on the drive disk 9; along the axis of the working chamber 5 there is a particle displacement cone 10, the forming surface of which is made with a constant angle of inclination α = 9-21 °, while at the bottom of the spherical chamber there is an unloading device 11 with a valve 12.

Thus, in the entire volume of the spherical chamber 5, a fluidized mixing process is formed with uniformly distributed ingredients of the mixture, while the effect of the segregation process is minimized by reducing the role of centrifugal forces, using concave blades in the direction of rotation of the disk and supplying the flow of the mixture to the edge of the disk (blades). Mixing is carried out for 2-3 minutes, then the drive of the disk 9 stops, the remaining dose of filler is added from the loading hopper 2, the disk 9 is put into operation and the mixing process continues for 3-4 minutes. Having finished the process of the mixing cycle, the rotation of the disk 9, the blades 7 and 8 is stopped, and with the valve 12 open, the finished medicinal feed is discharged into the container through the device 11.

Medicines (medicines) are in liquid, crystalline and powder form. For one treatment, for example, a sheep weighing 50-60 kg for helminths requires 8 mg of nilverm. To do this, a 50 g serving of nilverm requires 50 kg of filler (compound feed), a ratio of 1: 1000. As shown by numerous practice, it is impossible to obtain a homogeneous mixture in existing mixers, while the mixing homogeneity coefficient is 0.80-0.85, and according to veterinary requirements - 0.95-0.97 (A. Spesivtsev, The mixing process in the production of mixed feed. // Compound feed, 2016. С 37-41). Therefore, the same weight of the filler or 1: 3 is added to the preparation, and in the grinder-mixer for primary premixes, a primary premix is obtained by converting it into a finely dispersed state with a large developed total particle surface, which in turn ensures that the filler particles are enveloped by the preparation particles, i.e. e. alignment of the physical and mechanical properties of the drug and filler (Av. St. No. 1050152, 06/22/1983).

The limitation of the sphere, drawn by the diameter at an angle of 30 °, the length of the blades, the level of the junction of the guide fairing and the lower truncated sphere with the working chamber, the angle of inclination α = 9-21 °, the mixing time were determined empirically and verified in work.

Claims (1)

A method of preparing medicated feed in a ball mixer, including obtaining a primary premix in a grinder-mixer for primary premixes and mixing the primary premix with a filler, characterized in that the mixing of the primary premix and the filler is carried out in a ball mixer in a fluidized bed, which is created by ejecting the mixture with blades, made in a spiral of Archimedes with a concavity in the direction of rotation of the disk, to the inner surface to the upper part of the working chamber, made in the form of a truncated sphere, where the guiding fairing, the forming surface of which is represented by an involute with the origin at the bottom of the loading sluice, smoothly changes the flow of the mixture from bottom to top on movement from top to bottom and along the concave generatrix of the particle displacement cone, the surface of which is made with a constant angle of inclination of 9-21 °, transfers the flow from the center of the drive disk to the edge of the blades concave in the direction of rotation, after which the medicinal feed is unloaded into a container at.

Images