SU727204A1 - Apparatus for moulding granules of clayey material - Google Patents

Description

The invention can be used in the construction materials industry to form granules of clay material, in particular, in the production of expanded clay gravel. Granules tori are known. containing rollers covered with elastic mat I {a ohm with cuprophase formic cavities 1}. A disadvantage of limestone grators is the deformation of the granules when they are removed from the cavities. The closest known is the device for the odds / beads of granules, the perforated drum contained in it and the extruded pressing shaft with a cutting mechanism and a cutting mechanism {2. The disadvantages of this device include the inability to obtain a face: having a high uniformity in density, size and shape, which reduces the quality of the final product. The aim of the invention is to improve the quality of the granules and the productivity of the device. This goal is achieved due to the fact that in the device for forming granules, containing a crystalline drum and an extruded shaft of blades with blades and an HbtM Mexaffi {3MOM cutter, the blades are filled with fixed fastener at the ends with detachable elements, and the mech- The shaft is at an angle of 120 ° with the holders with the struts, which are located on the right side of the drum parallel to its shape. In addition, each hole in the drum has the shape of a truncated cone, directed by the base inside the drum. The device is schematically shown in a general form in FIG. 1 (top view); in fig. 2 shows a section A-A; in fig. 3 - section bb of FIG. The device for forming granules includes: a screw feeder I, rigidly connected with the body of the forming body 2 so that the working cavities of the feeder and the forming body are combined and form a common closed working volume. Pitatgel is independent from gearbox 3; -:; -.... w- ..

 a forming body consisting of a horizontal perforated drum 4, a press shaft 5 and a cutting device 6.

Drum perforations - conical-shaped holes 7, with the base facing the shaft, in the end part of the drum provided with a periodic inspection of the doors with hatches 8 with circuit plugs.

The pressing shaft 5 is rigidly fixed on the axis of the gearbox 9 and has three workhorses 10 formed by curvilinear planes. The curvilinear plane of the blades have thssive and active zones with a variable attack angle in relation to the plastic mass. Removable elements 11 are located at the ends of the blades, the dimensions of which can be used to adjust the gaps relative to the cutting edge and the perforated drum to provide various re-molding of granules, as well as allowing to adjust the performance of the granulator.

The cutting mechanism 6 of the pellets has three shock-absorbing holders of cutting strings 12 arranged parallel to the perforated drum at a radial angle of 120, driven from a perforated drum and carried out directly from the gearbox axis 9 by means of a special coupling that allows the cutting elements to be adjusted on the drum forming relative rotor blades.

The device works as follows.

Clay weight with a jaw feeder 1

is injected into the cavity of the molding body 2 uniformly under some constant leveling pressure in the entire volume of the forming body. The injected plastic clay mass is carried along by blades 10 and makes non-punctual rimmed circles around it, and the plastic mass is processed in various modes and final homogenization is achieved. The mass displaced to the periphery of the trajectory of movement of the blades, is uniformly pressed through the conical orbits of 7 in the drum as separate strands ..

At the periphery of the drum, the harnesses are cut off by mechanism 6, three holders of cutting strings 12 of which have an angular velocity, about a shank with a rotor. The cut of extruded clay harnesses is made following the movement of the ends of the rotor loiasts, at the moment when there are no forming forces. This ensures the uniformity of the granules to a density and the shape factor of the cut granules, close to unity.

Claims (2)

1. A device for forming granules of clay material containing a perforated drum and an extruding shaft located therein with blades and a cut fur: the bottom is characterized in that, in order to improve the quality of the pellets and productivity, the blades are made with removable elements fixed at their ends and with rigidly mounted on the shaft at an angle of 120 holders with strings located on the outer side of the drum parallel to its generatrix. 2. The device according to claim 1, that is, so that each hole in the drum has the shape of a truncated cone, directed by scanning the inside of the drum. Sources of information given in the examination ; 1. USSR author's certificate No. 625942, cl. B 29 B 1/02, 1977. 2. USSR inventor's certificate No. 433925, C: B 01 j 2/00, 1972 (prototos).