SU603426A1 - Attritioning machine - Google Patents

Description

(54) EXTRACTING MACHINE

FIG. Figure 1 shows the Ashina ottirrchna, cross section; in fig. 2 on the same longitudinal section.

The scrubbing machine consists of a cameo 1 in the form of a long groove, the upper part of which is matched by inclined side walls with a lower part, which is rectangular with a mock along the entire length of the groove. The camera is mounted on frame 2. The bottom and bottom of the chamber walls are replaced by interchangeable armored plates 3. The chamber has 4 loading and 5 unloading windows and is equipped with shafts 6, kinematically connected with the drive 7, which is fixed to the frame. The drive can be of different designs depending on the size of the machine and the number of revolutions of the shaft. Each shaft is mounted in bearings in the housing 8. The shafts are arranged vertically and mounted in a row. Coaxially with the rod, above the impeller impeller 9, the casing 10, which has windows 11 for circulation of the pulp, is fixed to the housing. A centrifugal impeller is mounted on the lower end of the shaft protruding as an impeller. The impeller is installed below the junction line of the inclined side wall of the chamber with its side walls at the bottom so that the plane of the impeller is perpendicular to the vertical side walls to ensure the effectiveness of rubbing against the chamber walls. The distance between the side walls of the lower part of the chamber is equal to the distance between the centers of the impeller impellers and is 1.25-2.0 impeller impeller. On the bottom of the chamber, between the impeller impellers, guiding peaks 12 are installed, installed at an angle to the horizon with a gap relative to the bottom of the chamber on the uprights 13. On the outside of the chamber, at the discharge window, there is installed a gate valve 14, which is connected with a screw drive 15. Gate valve a screw drive is installed in the discharge pocket 16c with an outlet nozzle 17. In order to limit the upper level of the pulp, there is an overflow window 18 in the chamber that opens into the discharge pocket.

The operation of the machine is carried out as follows.

The pulp, consisting of granular material and liquid, enters chamber 1 through the loading window 4. The impeller impeller 9, rotating from the drive 7 at high speed, pushes the pulp to the periphery, which through the windows 11 of the casing 10 again hits the impeller blades 9 impeller. Similarly, pulp is thrown out on a row of located impeller to an oppositely directed pulp flow.

from another impeller. Two streams of pulp, striking each other, effectively rub spams from the solid phase due to abrasiveness of the latter. Rubbing of ishams also occurs in the interscapular space of impellers 9 due to an abrupt change in the velocity of the pulp at the inlet and outlet from the blades. Part of the pulp flow leaving the impeller 9 at high speed strikes interchangeable lateral

armored plates 3, on which the grinding of the granular part of the pulp from sludge additionally takes place. The entire pulp, the passage from the loading window 4 to the discharge chamber. The window 5 is processed by each impeller 9. At the bottom of the chamber, a portion of the pulp flow ejected by the impeller is deflected by the guide visor 12, preventing silting Q of the bottom of chamber 1 and improving circulation

pulp inside the chamber. The granular part of the pulp washed from the slimes is directed to the discharge window 5 and enters the discharge pocket 16. The flow of the washed pulp is regulated by a slide gate 14 connected to the screw drive 15. The overflow window 18 maintains the pulp level inside chamber 1 constant and allows remove, together with the liquid phase, the washed slurry of the pulp, which is ejected well above the circulation windows 11.

The inclined side walls of the chamber allow the most efficient use of the circulation load of each scrubber unit to keep the particles of granular material in the circulation windows in a suspended state.

The selected optimal ratio of the distance between the side walls of the lower part of the chamber, between the centers of the impeller impellers and the impeller diameter i provides a wide 5 pulp flow ejected by the impellers. The flow rate of the pulp until its impact with another oncoming flow or with an armor plate is sufficient for efficient rubbing and optimal in terms of energy consumption.

Claims (1)

1. USSR author's certificate 411903, cl. On 03/5/48, 1971. 2 f figure 1