SU1269803A1 - Roller crystallizer and method of production thereof - Google Patents

Abstract

1. Roller mold, including a bed, cooled from the inside of the roller with a heat transfer ribbed surface, partially immersed in the melt, drive for rotating the drum, a bath for the melt, lines for supplying and removing coolant, a knife system for cleaving the crystallized product from the surface of the drum, different the fact that, with the aim of increasing the productivity of the mold due to the intensification of the heat exchange process and increasing the area of the heat transfer surface, reducing the specific metal consumption of In the drum ribs, annular channels are made with openings connected to the coolant supply line and the internal cavity of the drum.

Description

2. The crystallizer according to claim 1, wherein, in order to create a unidirectional movement of the coolant in the channels relative to the surface of the roller, each annular channel is provided with a hollow transverse partition, and the holes are located on opposite sides of the said partition in close proximity to it.

3. The crystallizer according to claim 1, in which it is provided with a collector and a vertical pipeline connecting the annular channels with the coolant supply line

4. A method of manufacturing a roller mold, which includes making a roller by forming a cylindrical shell, fixing end walls with trunnions on a cylindrical shell, turning the outer surface of the shell and trunnions, turning ring grooves evenly spaced along the length of the shell, forming a ribbed surface, installing a roller on the bed, forming a ribbed surface uniformly along the length of the shell and forming a ribbed surface, installing a roller on the bed, forming a ribbed surface, evenly spaced along the length of the shell of the ring grooves to form a ribbed surface, installing a roller on the bed, forming a ribbed surface, evenly spaced along the length of the shell of the ring grooves to form a ribbed surface, installing a roller on the bed, forming a ribbed surface, evenly spaced along the length of the shell of the ring grooves to form a ribbed surface, installing a roller on the bed, forming a ribbed surface, uniformly spaced along the length of the shell of the ring grooves to form a ribbed surface, installing a roller on the bed, forming a ribbed surface, forming a ribbed surface evenly along the length of the shell. its lower part in the bath for the melt, mounting and fixing the remaining units of the mold, characterized in that, in order to Penetrating the productivity of the mold and reducing the specific metal consumption of the structure before turning out the annular recesses, on the outer surface both of the cables grind the additional annular recesses uniformly along the length of the drum with annular grooves with a pitch equal to the pitch of the ribs and a width less than the width of the edge, through the bottom of each annular groove through holes cut through , make additional annular recesses on the side of the outer surface of the shell, after which, in the intervals between the processed welds, you the circular recesses are drained to form a ribbed surface.

"

The invention relates to chemical engineering, in particular to apparatuses for the crystallization of melts and their solutions, as well as to methods for the manufacture of said apparatuses.

The aim of the invention is to increase the productivity of the mold due to the intensification of the heat exchange process and an increase in the area of the heat transfer surface, reduction of the specific metal content of the structure, as well as the creation of a unidirectional movement of the coolant in the channels relative to the surface of the roller.

Figure 1 shows a roller mold; figure 2 - section A-Ana figure 1; on fig.Z - P - the sequence of operations in the manufacture of the drum of the mold.

The mold consists of a frame 1 on which a drive 2 of roller 3 is installed, a bath 4 for melt, knives 5 for cleaving a solid product from the ribbed surface of the roller, a case 6 for sealing the internal cavity of the mold. Collector 7

provided with nozzles 8 for spraying coolant onto the inner surface of drum 3. Vertical pipe 9 connects supply line 5 of coolant 10 through manifold 11, holes I2 with annular channels 13 formed in the ribs, each annular channel is provided with a hollow transverse partition 14, and holes

0 12 and 15 are located on opposite sides of the partition 14. The annular channels 13 are communicated with the internal cavity of the drum through the holes 15. Pat cuttings 16, dp output coolant

5 is connected to the coolant outlet line 17.

A method of manufacturing a roller mold is carried out in the following sequence.

Cylindrical elements are fabricated (Fig. 3); form a cylindrical shell (figure 4); end walls with trunnions (Fig. 3) are fastened on the cylindrical shell; 5 turning the machining of the outer surface of the shell and pins (Fig. 6); grind on the outer surface of the shell evenly spaced along the length of the drum annular tangencies with a pitch equal to the pitch of the ribs and a width smaller than the width of the ribs (Fig.7); install dividing walls 14 and cut through holes for the entry and exit of coolant in the bottom of each annular recess (Fig. 8); annular recesses are welded from the sides of the outer surface of the shell (Fig. 9); finishing turning of the outer surface of the shell is made (Fig. 10); grind the annular recesses in the intervals between the welds (Fig, 11). As a result of these operations get the drum 3 with hollow ribs. The drum 3 is mounted on the bed 1 with the lower part located in the bath 4 for the melt. Example. Operations 1. Rolling 4 pcs. cylindrical elements welding them with a longitudinal seam, turning machining of end walls (FIG. 3). Operation 2. Formation of the drum shaft by welding 4 cylindrical elements (figure 4). Operation 3. Fastening on the cylindrical shell of the end walls with pins (figure 5). Operation 4. Turning treatment on the outer surface of the shell and pins (Fig.6). Step 5. Turning on the outer surface of the shell evenly spaced along the length of the drum ring grooves with a step equal to the step of the ribs, and a width smaller than the width of the ribs (Fig.7). Operation 6. Cutting through holes for input and output cool77.

74

75 carrier in the bottom of each annular channel, and the installation of the partition 14 inside the annular recesses (Fig.8). Operation 7. Brewing annular recesses from the outer surface of the shell (figure 9). Operation 8. Chistr turning turning the outer surface of the roller (figure 10). Step 9. Turning with the help of turning the grooves in the intervals between the welds (Fig.11). Next, the roller is mounted on the bed 1 with the lower part located in the bath 4 for the melt. The mold works as follows. The melt enters the bath 4 for melting the crystallizer. The drum 3 is cooled from the inside by a coolant flowing through the manifold 7 sprayed by the nozzles 8. The hollow fins are cooled by the coolant supplied to them through the stuffing box, the vertical pipe 9 and the collector I1, which is connected through the holes 12 to the annular channels 13 in the ribs. From the annular channels 13, the coolant is discharged into the internal cavity of the drum 3 through the openings. The coolant is discharged from the inner cavity of shaft 3 through nozzle 16. A layer of crystallized product forms on the outer surface of a rotating drum partially immersed in the melt during its residence in the melt, which is then cooled to a predetermined temperature, cut off by knives 5 and removed from the crystallizer.

-N

§

g

S05

Yaprv

Sbarna

Kg t

V

LA

Sbarna

Fig.d

Sbarna

/

Collected.

/

FIG. five

Kg 40

./

Welding

Fi.b

FIG. 9

that

w

l

V / jf /// y // y7. / 7.

/

 /

FIG. eleven

Claims (4)

1. A roller mold, including a bed, cooled from the structure, annular channels are made in the ribs of the roller with openings communicated with the supply line of refrigerant SU ..... 1269803 figs! 2. The mold according to claim 1, characterized in that, in order to create unidirectional movement of the coolant in the channels relative to the drum surface, each annular channel is provided with a blind transverse partition, and the holes are located on opposite sides of the said partition in the immediate vicinity of it. 3. The mold according to claim 1, characterized in that it is provided with a collector and a vertical pipe connecting the annular channels to the coolant supply line. 4. A method of manufacturing a roll mold, including the manufacture of a roll by forming a cylindrical shell, securing the end walls with pins on the cylindrical shell, turning the outer surface of the shell and trunnions, turning annular recesses evenly spaced along the length of the shell to form a ribbed surface, installing a roll on the bed with the location of its lower part in the bath for the melt, mounting and securing the remaining nodes of the mold, characterized in that, with the aim of higher In order to increase the mold productivity and reduce the specific metal consumption of the structure before turning the annular recesses, additional annular recesses uniformly spaced along the roll length are machined on the outer surface of the shell with a step equal to the step of the ribs and a width smaller than the width of the ribs, through holes are cut in the bottom of each annular recess, welded additional annular recesses from the side of the outer surface of the shell, after which I grind between the welded joints annular recesses to form a ribbed surface.