SU98389A2 - Continuous Diffusion Single Column - Google Patents

Description

BASIC Auth. St. No. 98392 described a one-column apparatus for continuous diffusion with forced (Chip advancement by a rotary blower from the bottom upwards in a counterflow of water, with removal of pulp using a regulating cone and auger, using inclined plates on oita and a distribution juice device used in vacuum filters.

The proposed modification of the device according to ed. St. No. 98392, which makes it possible to carry out a more complete countercurrent of juice and chips in the apparatus and allowing an increase in the specific filling ratio of the apparatus.

The peculiarity of the apparatus is that a shaft consisting of two halves is installed along its axis, with the drive of one half located at the top of the column, and the drive of the other half at the bottom of the column. At one distance from one another, the turns of the auger are made, made of radially mounted plates with an inclination in motion.

The second turn from the bottom is made continuous with superimposed on it.

from above with nakshny plates forming "the upper CAVITY, and with anise grid, forming the lower cavity; Both cavities through the hollow lower half of the shaft connected to the distribution device.

The lower spinner is made flat with overlaying adhesive plates on top of it, forming a cavity connected through the lower hollow half of the shaft with the same distribution device.

FIG. 1 shows a view of the proposed apparatus in longitudinal section; in fig. 2 - detail of the central part of the second bottom coil; in fig. 3- tangential cut of the coil; “And FIG. 4 - part of the coil in the plan; in fig. 5 - section rotary chip blower; in fig. 6-- detail of the blade of the rotary supercharger.

The apparatus is made in the form of a cylindrical column 1, along the axis of which there is a shaft consisting of two POLOVI1N 2 vi 3, made of thick-walled pipes. Each half shaft has its own drive; one drive 4 is located at the top of the column, the other drive

5 at its bottom. For mounting in the middle part of the bearing pillar 1 6, centering both halves of the shaft, there are two traverses with a pointed lower edge to reduce the soltoizliya chip movement from the bottom up.

On the shaft of the apparatus, at equal distance from one another, windings 7 of the screw are installed, having a pitch. l.io- / 20 from the diameter of the column and made of radially installed and the edge of the plates 8, having a slope in motion. Plate thickness about 1-1.5 mm; the gap between H) 1m. koleblets within 5-15 mm. To reduce the resistance when a coil enters the chip, its lower edge is made in the form of a knife 9,

In the apparatus, chip is forced to move upwards from the bottom in a countercurrent of water with squeezing of the pulp in the upper part of the column.

In order to pick up the juice and return it from the heater 10 IB, the second coil 7a from the bottom is made by a blunder with oblique plates superimposed on it forming the upper cavity, and with a grate 11 from below forming the lower cavity. Both cavities are connected through a hollow lower half of the shaft to a distributor 12, similar to a vacuum filter distributor, and through pipe 13 to a collector 14 having a level regulator. The upper part of the collector is filled with oil to prevent foaming, and the lower part is connected by pipes to the pump 15 and the preheater 10.

To remove the juice cooled as a result of mixing with chips, the lower turn 76 is made solid with inclined plates superimposed on top of it, forming a cavity connected through the lower hollow half of the shaft 3 to the distributor 12 and to the collector 16, which, as well as collection 14, located slightly above the top of Column 1.

The chip feed from the hopper 17 to the lower part of the column 1 is carried out with a rotary blower, made in the form of a horizontal rotating drum 18, in the radial slits of which the mouth of the NEWlep plate 19. Each plate 19 has two rollers 20 rolling in the grooves of the end face. the walls of the stationary housing of the supercharger, which, when the drum rotates, ensures synchronous movement of the plates 19 in the radial direction. The chips flow from the hopper 17 to the supercharger through the square fitting 21 and are injected into the column through the fitting 22.

Between the supercharger and the column, a crane 23 is installed, automatically closing when the supercharger is stopped.

In order to prevent the chips from deforming during injection, it is fed into the apparatus column along with the juice. An intermediate tank 24 with vertical double walls is provided for filling the juice between the hopper between the hopper and the supercharger; The inner walls of the tank are perforated, and the space between the walls is connected through a juice level regulator 25 of the float type with a valve to the pipeline 26 for the Juice.

The water in the column / is supplied through the pipeline 27, provided with a water meter 28, a valve 29 for regulating the water supply and a shut-off valve 30. The shut-off valve has an electromagnet 31 interlocked with the electric motor of the blower, which serves to shut off the water supply when the blower stops. The water supply can be stopped automatically by means of a photocell installed in the bunker .17 in the place of the lowest allowable chip. Uniform distribution of water is achieved by connecting the pipeline 27 through the gland and the hollow top-. nude half 2 shaft with upper coil 7c.

The upper half of the shaft 2, in addition to the coils 7, bears on itself the unloading adjustable cone 32 and the screw 33 to extract the pulp. To discharge the pulp through the nozzle 34 serves

Fortified on the gear shaft shaft comb 35.

The chips, which enter into the bunker 17, together with the juice filling the interstitial space, are captured by the blade of the rotary magnetiser and enter the lower part of the column 1, displacing the chips there and raising it. That part of the chip that goes directly below the lower turn 76 is caught by the lower sharp edge of the turn and rises Upward to the height of the turn step. When this occurs, the chip slipping on the auger turn.

The main function of the screw auger is to filter the juice with a small height of the layer of chips and, therefore, with a small amount of filtration resistance and a small amount of chip compaction at the spiral turn.

The transport mechanism in the apparatus is a rotary blower, which simultaneously dispenses the chips. The combined action of the rotating spiral coils 7 and the rotary blower allows to obtain a full Heinversion countercurrent of juice and chips.

The pulp released from the water is ejected from the upper part of the apparatus by means of the screw 33 and the comb 35.

Diffusion juice is taken from the lower part of the apparatus through a collector 16 located slightly above the upper part of the column, which makes it possible to reduce the pressure of the chips on the lower spiral turn.

Due to the use of counterflow when scalding chips, the resulting juice has a low temperature. At the same time, steam consumption is about 3% of the chip weight.

In order to purge the spiral turns with poor quality of chips, the possibility is provided for the reverse movement of the juice from bottom to top. In this case, the selection of the juice is stopped.

Subject invention

Claims (3)

1. One-column apparatus for continuous diffusion on the author. St. jYa 98392, characterized in that, in order to implement a more complete countercurrent of juice and chips and increase the specific filling ratio of the apparatus, a shaft is installed along its axis, consisting of two halves respectively, on top and bottom, on which Spiral coils, made of radially mounted on the edge of the plates having a slope in movement, are installed one from the other. 2. The form of the apparatus according to claim 1, characterized in that for taking the juice and returning it to the heated state, the second turn of the bottom is made optically with the inclined plates superimposed on it from above, forming the upper cavity, and with the bottom grid forming the bottom cavity, both cavities through the hollow lower half of the shaft connected to the distribution device. 3. The form of the apparatus according to paragraphs. 1 and 2, characterized in that, in order to remove the juice from the apparatus for further processing, the lower turn is made solid with superimposed inclined plates that form a cavity connected through the lower hollow half of the shaft to the same distribution device. No. 98389 - 4 - FIG. one ft O-FIG. 2 FIG. 3 .R: i ... hi FIG. four /