Planar multi-stage coaxial disc extruder

Abstract

The invention relates to a planar multilevel coaxial disc type plastic extruding machine. The machine comprises a housing, a flange, an extruder head, a conical blade shaft, a fixed disc, a hopper, a rotating disc, a rotating disc transmission shaft, a first gear, a second gear, a first thrust bearing, a second thrust bearing, a first transmission mechanism, a second transmission mechanism, a first motor, a second motor, bases, a first radial bearing set and a second radial bearing set, wherein the housing is arranged on the fixed disc and the rotating disc in a covering mode; the hopper is installed on the housing; the left end of the rotating disc transmission shaft is fixedly connected with the rotating disc, the right end of the rotating disc transmission shaft is installed on one base through the first thrust bearing, and the second radial bearing set and the first gear are both installed on the rotating disc transmission shaft in a sleeving mode; the left end of the conical blade shaft is fixed to the rotating disc, and the second gear is installed at the right end of the conical blade shaft in a sleeving mode; the machine is characterized in that threaded groove groups of multiple levels serving for material pulverization, mixing, grinding and plasticizing and serving as transmitting channels are sequentially formed in the end face where the fixed disc and the rotating disc are matched from the outer circle to the center, and a discharging opening of the hopper is communicated with a threaded groove group of the first level. By means of the machine, the material plasticizing quality is improved, the material plasticizing output is raised, cantilever problems of a multiple screw extruder can be overcome, and advantages of a disc type extruder are achieved.

Description

technical field [0001] The invention relates to a plane multi-stage coaxial disc extruder, which is used for crushing, mixing and extruding equipment of inorganic materials, organic polymer materials and their fillers, belonging to material crushing, mixing and extrusion Molding equipment technical field. Background technique [0002] In petrochemical, rubber and plastic industries, milling, mixing and extruding machines are important equipment. Ordinary single-screw extruders have limited functions for crushing, shearing and grinding materials, and the screw extruder is structurally a cantilever beam structure, which is often prone to failure due to its own gravity, axial and radial thrust of materials. The reason is the friction and wear with the machine barrel, especially when the material is subjected to strong grinding, this shortcoming is even more prominent. [0003] In order to overcome the deficiencies of the screw machine, some machines use a disc structure to ac...

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Problems solved by technology

[0006] In the above examples, the millstone structure is adopted, and the materials are ground, pulverized and plasticized through the gap between the millstones. Although the structures are different, they have not overcome the problems and deficiencies of the traditional millstone extrusion equipment. Large flow resistance, unsatisfactory plasticizing effect, high power consumption

[0007] The Chinese patent with the notification number CN 101890799 B titled "Combined impeller grinding disc extrusion plasticization method and device" adopts a structure in which multiple fixed impeller grinding discs and rotating impeller grinding discs are stacked together, so that the material is When passing through multiple staggered grinding disc gaps and blade passages, it is gradually mixed, crushed, ground and softened, which improves the quality of plasticization, but this structure is too complicated, the cost of manufacturing and use is too high, and the axial size is still large

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