SU1255193A1 - Granulator - Google Patents

Description

 one

The invention relates to devices for the production of granules from wet powdered and pasty materials and can be used in chemical, petrochemical and other industrial sectors.

The purpose of the invention is to reduce product losses, increase reliability and productivity by reducing downtime.

FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - leading and trailing elements in the form of a friction pulley; in fig. 4 - elements in the form of sprockets and chains; in fig. 5 is a view B in FIG. one; in fig. 6 - loading hopper.

The granulator contains a perforated rotating cylindrical matrix 1, an injection roller 2, a means 3 for extracting the granules onto the matrix surface, a pellet remover 4, a means 5 for returning spillage, a charging hopper 6, the means for returning spillage contains an endless elastic band 7 on the outer surface which along its lateral edges are fixed V-belts 8, which are engaged with the pulleys 9 mounted on the shaft 10 of the delivery roller.

The infinite tape is installed on roller supports 11, which in turn can be installed both on the granulator housing and on its frame 12, and covers the roller with a gap 13. The pulleys can be self-aligning: imis (Fig. 2) For this Each of them has two diametrical holes 14, in which two axes 15 are installed, which enter simultaneously into the holes of two coaxial sleeves 16.

The bushings are installed in the slots 17 of the yoke 18 on the axles x 19 (the latter are perpendicular to the axes m 15). Both clips are seated on the roll shaft 10 through the key 20 and fixed on the shaft by nuts 21 and 22. Axles 19 for the purpose of axial movement of the pulleys are installed in the grooves 23 of the said clips. To protect the pulleys from radial displacement relative to the axles 15, retaining rings 24 are mounted on the axles. The pulleys of the proposed construction have the ability to rotate relative to the soybeans 15 and 19 and move relative to 551932

of the grooves 23. The self-aligning pulleys can be made of another design shown in FIG. 3

5 The pulley 9 is connected to the yoke 18 by means of two elastic rings 25 through metal ring plates 26 and 27 and screws 28.

Under the roll and the matrix installed

10 guides (FIG. 4), made in the form of inclined plates 29 mounted above the receiving section of the return unit tape on axles 30 (the receiving section of the tape is part of it located under the gap between the roller and the die). These yush 1e can also be made in the form of a conical bunker, which ensures that spills fall into the middle of the ribbon. Axis 30,

20 on which the guides are mounted can be fixed both on the frame 12 of the return unit and on the body of the granulator (not shown). The hopper is made with a pocket 31,

25 formed by the side wall 32 and the partition 33 installed in the bunker with a gap relative to the roll. The pocket is executed with an offset from the vertical axis of the shaft 30 ka b O towards the matrix. Such a design embodiment of the loading hopper not only ensures that the return spill is fully hit into the indicated hopper, but its intensive and complete capture of the product moving down the bunker. In other words, all return spillage falls on lossless granulation (FIG. 6).

Placing the side wall 32 of the hopper 6 near the vertical axis 00 of the roll 2 does not ensure the return of spillage into the bunker, since this is prevented by the product column in it. The return spillage cannot be captured by the product, since the rate of movement of the latter from above, down near the wall is almost zero.

Raised with tape 7, the spillage is forced to completely fall off the roll through its side edges. Execution of the bunker with the partition 33, forming a pocket. 31 (Fig. 6), displaced relative to the same axis 00 to the side 55 of the matrix 1, allows the lifting of the spillage to collect in the free pocket of the bunker, then this spillage is captured moving down the bunker 45

50

3

This is because the product's downward velocity near the partition 33, located as close as possible to the gap between the roller and the die, is significant and close to the maximum. When granulating heavy masses, the tape drive can be made in the form of sprockets 34, reinforced on both sides of roll 2 (instead of pulleys 9), and chains 35 are mounted on the side surfaces of tape 7 (Fig. 4).

Graiul TOR works as follows.

A part of the mass under the action of the rotating injection roller 2 fills the orifices of the rotating matrix 1 and seals them. With further rotation of the matrix under the action of the means 3 for extracting the granules from its openings, the granules are pushed onto the surface of the matrix and removed by means 4. Another part of the mass spills through the gap between the roller

934

and by the matrix and guided by the guide plates 29 to the middle of the receiving portion of the belt 7,

Spinning simultaneously with the roller 9 using V-belts 8 fixed along the side edges of the belt, capture the latter. At the same time, spilling the tape, in contact with it and with the roller, rises to the receiving pocket 31 of the hopper 6. Then the raised spill falls into the pocket and gets carried away moving down the bunker with the product to be routed.

Verification of the proposed device in laboratory and industrial conditions shows a high reliability of the device, which allows to significantly reduce product losses that do not exceed more than 1% of the granulator downtime due to failure of the return unit tape, sticking, jamming, cleaning and its wear. is observed.

/ f- /

21

FIG. 2

27

fig.Z

Suds

(rig 5

FIG. B

Editor G. Volkova

Compiled by R.Gor inova

Tehred A. Kravchuk Proofreader S. Cherni

Order 4743/7 Circulation 527 Subscription

VNIIPI USSR State Committee

for inventions and discoveries. 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

GRANULATOR, containing a rotating perforated cylindrical matrix, a pump roll, mounted on the shaft, a hopper, means for extracting granules onto the matrix surface, a pellet remover, means for returning the spill, made in the form of an endless elas FIG. 1 textile tape covering the roll and mounted on roller bearings, characterized in that, in order to reduce product losses, improve reliability and productivity by reducing downtime, it is equipped with leading elements - pulleys or sprockets mounted on the shaft of the injection roll on its lateral sides and having a diameter larger than the diameter of this roll, driven elements — belts or chains mounted on the tape along its lateral edges, a partition installed in the loading hopper above the heating - _ _ Q melting roll, and SS guide rails mounted under the gap between the roll and the die. SU „„ 1255193 A1