RU1818030C - Fodder mixer-cum-distributor - Google Patents

Abstract

The invention relates to agricultural machinery. SUMMARY OF THE INVENTION In a cylindrical bunker, tape augers with the opposite direction of coiling are fixed on the shaft. A shell 7 with impeller unloading impellers is fixed on the shaft. The blades of one of the impellers are located with a displacement around the circumference relative to the blades of the other impeller. The blades are mounted to the generatrix of the shell at an angle opposite to the direction of attachment of the names of the adjacent tape auger. The impeller blades are mounted on the shell with the possibility of changing the angle of their inclination relative to the forming shell. When mixing, the feed auger moves to the shell and under the influence of the impellers changes the direction of movement by 180 °. A pressure region is created near the inner walls of the hopper, and a pressure region is created in the shaft area. To adjust the dose of the feed delivered, the blades of the impellers are moved into the holes of the shell. 1 s.p. f-ly, 2 ill. t s

Description

The invention relates to agricultural machinery, in particular wet feed distributors.

The purpose of the invention is to reduce energy intensity while improving the quality of mixing and uniform distribution of wet feed.

This goal is achieved by the fact that in the distributor-mixer containing a cylindrical hopper mounted on a self-propelled truck, inside of which on-shaft counter-running augers are fixed, between which unloading impellers are located on a common casing. What is new is that the blades of the unloading impellers mounted on the shell are offset relative to each other around the circumference of the shell, being staggered on its reamer, while their direction does not coincide with the direction of adjacent tape augers, and the blades of the unloading impellers are installed with the possibility of changing their angle of inclination relative to the shaft.

Comparative analysis with the prototype makes it possible to conclude that a feed distributor mixer is installed, characterized in that in a horizontally located self-propelled hopper on the shaft, between the belt augers with counter winding, there is a shell on which relative to its circumference are fixed each other blades located on a scan of the shell in a checkerboard pattern, while their direction does not coincide with the direction of neighboring

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with about

tape augers and blades of unloading impellers are installed with the possibility of changing their angle of inclination relative to the shaft.

In FIG. 1 shows a general view of a distributor-mixer and the kinematics of particle movement along a shell; in Fig.2 - adjustment of the rate of feed.

The dispenser-mixer contains (Fig. 1): a horizontally arranged cylindrical hopper 1 on a self-propelled cart 2, Inside the hopper 1, a shaft 3 is installed with tape screws 4.5c opposite to it being fixed on it through the racks. Between the tape screws 4, 5, above the area of the discharge windows b, a shell 7 is mounted parallel to the axis of the shaft 3, on which, with respect to the plane perpendicular to the axis of rotation of the shaft 3, and also near its side bases, holes 8 and 9 are made. 8 and 9, by means of screw pairs, the fasteners of the impellers 10 and 11, while the impellers 10 of the right side are offset relative to the impellers 11 of the left side. To adjust the convergence of the impellers 10 and 11 on the shell 7, several holes 9 are made in radius with respect to the hole 8.

When mixing, the feed by the action of belt screws 4 and 5 moves from the side walls to the center of the hopper 1 (Fig. 1). The entry into zone A on the shell 7. feed by the action of the impellers 10 and 11 reverses its direction of movement - 180 °, which allows you to create two oppositely directed flows, the first from the side walls to the center of the hopper 1 and the second with the blades of the impellers 10 and 11 from the center to the side walls of the hopper 1.

Since the tape screws 4, 5 and impellers 10 V 11 of the shell 7 are installed near the inner walls of the hopper 1, the oncoming flows create a pressure region in this part of the hopper 1. At the same time, a low pressure region forms in the area of the shaft 3, since the feed is not actively mixed here.

Thus, in the hopper 1, when mixing, two pressure regions are formed, the high one near the walls of the hopper 1 by means of oncoming flows, and the low pressure near the shaft 3.

Since the high-pressure region is limited by the inner wall of the hopper 1, the oncoming flows, introduced into each other, at the same time change the direction of their movement - from the inner walls of the hopper 1 to the shaft 3. The turbulence arising without additional devices allows to reduce energy costs mixing while improving mixing quality.

In addition, when mixing a part of the feed under the action of centrifugal forces moves along the plane of the impellers 10 and 11. In this case, the feed flow of the impeller 10 intersects with the feed flow of the impeller 11 that has changed its direction, and vice versa. The intersection of these streams also contributes to the intensification of the feed mixing process.

When dispensing, the feed located between the impellers 10 and 11 is fed into the feeders through the openings of the discharge windows b. So

5 as the impellers 10 and 11 form a wedge directed opposite to the rotation of the tape augers 4 and 5, the volume of feed located between their inner planes during the distribution process,

0, regardless of the mass level in hopper 1, is constant. In this case, the amount of feed entering the unloading windows 6 is constant regardless of its level in hopper 1. In order to adjust the amount of feed (Fig. 2), the impellers 10 and 11 are moved into the holes x 9 relative to the holes 8.

When the impellers 10 and 11 converge, the width of the moving along their internal

0 planes of the feed stream decreases, and therefore the pressure in the area of the discharge window 6 increases. In this case, the amount of feed dispensed increases.

With increasing distance between

5 grylchatkami 10 and 11 at the top of the wedge,

the corresponding pressure decreases so

as the feed flow moving along their inner walls increases. In that

in the case of the amount of feed dispensed decreases.

Thus, the impellers 10 and 11, mounted on the shell 7, offset relative to each other, facilitate mixing of the feed in the hopper 1, throughout

5 to its volume, without additional devices, which is a consequence of a decrease in the specific energy consumption of the preparation of feed and an improvement in its quality.

Due to the fact that the direction

0 impellers 10 and 11 are opposite to the direction of rotation of the tape augers 4 and 5, then the amount of feed located in the space between them is constant throughout the feed distribution and does not depend on it

5 level a hopper 1, which ensures uniform distribution of feed.

The movement of the impellers 10 and 11 in the openings 8 and 9 of the shell 7 makes it possible to change the rate of feed delivery depending on the species being served and the group of animals.

Formula 1. A feed mixer comprising a cylindrical hopper mounted on a self-propelled truck, inside of which belt screws are mounted on the shaft, made with the counter winding direction, mounted on the shaft between adjacent by the edges of the tape augers, a shell with bladed unloading impellers located on it, characterized in that, in order to reduce the energy intensity of the mixing process, as well as to increase the uniformity of distribution and the quality of mixing of feed, the blades of one of

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unloading impellers are displaced around the circumference of the shell relative to the blades of the other impeller, while the blades of each impeller are mounted to the generatrix of the shell at an angle opposite to the mounting direction of the windings of the adjacent belt auger.

2. The feed mixer according to claim 1, characterized in that the blades of the unloading impellers are mounted on the shell with the possibility of changing their angle of inclination relative to the forming shell.

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