SU1409317A2 - Apparatus for preparing mixtures - Google Patents

Abstract

The invention relates to an apparatus for preparing an arbolite mixture and improves productivity. The device contains a rotating drum with grooved blades located in it along a helix. A shaft with blades mounted along a helix, displaced in the direction of rotation of the drum so that the angle between the vertical plane and the plane passing through the shaft axis and the drum is located in the drum is equal to the angle of repose of the mixture. The shaft is mounted for reversible rotation. A nozzle with blades located inside the drum at an angle to its generator is located at the discharge nipple of the drum. The nozzle is installed with the possibility of reverse rotation. 1 hp f-ly, 5 ill. with S (L

Description

with

14)

The invention relates to drum-type mixers and can be used in the manufacture of construction chemicals, for example, to obtain arbolit mixture.

The purpose of the invention is to improve the performance of the device.

Figure 1 shows the device, a general view; figure 2 is a section L-4GI; on fig.Z - section BB in figure 1; figure 4 - the relative position of the blades of the drum, shaft, nozzle (a fragment of the sweep); on fig.Z shaft placement inside the drum.

The device comprises a frame 1, on which a drum 4 is installed by means of rollers 2 and tires 3, which receives rotation from a drive (not shown). On the inner surface of the drum 4 along the helix are the blades 5, having a groove-like shape. On the frame 1 are also mounted feeder 6, nozzle 7, loading 8 and unloading 9 nozzles. Inside the drum 4 there is an axially located shaft 10 with blades 11 mounted along a helix. The shaft 10 is mounted on frame 1 in bearings 12 offset in the direction of rotation of the drum 4 so that the angle between the vertical plane and the plane passing through the axis of the shaft 10 and the axis of the drum 4 is equal to the angle of repose of the mixture during rotation of the drum 4. Shaft 10 receives a reverse rotation from the actuator 13. On the discharge part of the drum 4, by means of a band 14 and rollers 15, the nozzle 16 is mounted for reverse rotation, which has blades 17 located inside the drum 4 at an angle to its generator. On frame 1, a brush 18 is also mounted, which is rotated by a drive (not shown).

The device works as follows.

A drive (not shown), which rotates the drum 4, is turned on, and through the loading nozzle 8, a refined aggregate, for example wood chopped, is fed. By means of the nozzle 7, the aggregate, if necessary, is irrigated with a mineralizer solution and is fed into the mixing drum 4, where the blades 5 finally transfer the crushed material to the mineralizer and move it to the discharge part of the drum 4.

Through the feeder 6, a binder is fed into the drum, for example cement slurry, with which the mineralization is mixed. shredder bath. The blades 5 capture the binder and filler. At the same time, the binder having

Q is the specific gravity, fills the chute, and the aggregate forms the top layer.

 When the drum 4 is rotated, the aggregate falls down from the working surface of the blade 5 downwards, moving simultaneously along the generator of the drum 4 in

the side opposite to the tilt of the blade 5. When rotated 90 ° from the groove of the blade 5, the binder is poured out to fill up. At a constant rotation of the institute, uniform mixing and movement of the entire volume of the mass along the drum occurs.

When the device operates in cyclic mode, the shaft 10 receives rotation from

5 of the drive 13 in the direction of rotation of the drum 4 at a speed significantly higher than the speed of its rotation. In this case, the blades 11 move the mixture in the direction from the discharge part

Q drum 4, due to which there is an intensive mixing of the mixture. The nozzle 16 receives rotation from the drive. yes (not shown) also in the direction of rotation of the drum 4 at a speed that exceeds its rotational speed. When this blade 17 discard the mixture from the discharge part into the drum 4.

At the end of the mixing shaft 10

"And the nozzle 16, by reversing the drives, change the direction of rotation, and with their paddles 11 and 17, they accelerate the process of unloading the mixture from the drum 4 into the discharge port 9.

five

When the device is operating in continuous mode, the shaft 10 may have a rotation in the direction opposite to the direction of rotation of the drum 4. In this case, the blades 11 will intensify the process of moving. The nozzle 16 also has a rotation in the direction opposite to the direction of rotation of the drum 4 and its blades 17 helps to improve the unloading process.

5 of the mixture from the drum 4. The rotary brush 18 cleans the inner surface of the drum 4 and the blades 5 from the mixture.

five

The angle between the vertical plane and the plane passing through the axis of the shaft with blades and the axis of the drum is equal to the angle of repose of the mixture when the drum 4 rotates. When the latter rotates, the mixture under the influence of friction forces moves in the direction of its rotation. Dp of ensuring the highest productivity and high-quality mixing of the mixture of the blade II of the shaft 10 should be in the zone where there is the greatest amount of the mixture. This zone will be the place determined by the angle of the natural reflux of the mixture H during the rotation of the drum (figure 5).

The use of the proposed device allows to increase productivity due to the intensification of the mixing process, as well as to expand technological capabilities, using the same device both in cyclic and in continuous operation modes.

/ /

//

you jq f5

20 25

093174

Claims (2)

1. A device for the preparation of mixtures according to ed. St. 856523, characterized in that, in order to increase productivity, it is equipped with an additional shaft mounted with the possibility of reverse rotation with blades along the screw of the return line, while the shaft is located offset from the central axis of the drum in the direction of rotation of the drum and the angle between the vertical plane and the height that passes through the shaft axis and the drum axis, is equal to the angle of repose of the mixture. 2. The device according to claim 1, ranging from the fact that the drum is provided with a cylindrical nozzle placed at the discharge nozzle, installed with a possibility of rotational rotation and having blades located inside the drum at an angle to its generator. Bh fpue.l A-A ffjus.Z 17 ,, ipuf 6-6  ff fpus.S