Spiral extrusion method and device for bar-producing machine

Abstract

The invention discloses a spiral extrusion method and device for bar-producing machines. By arranging an exhaust cylinder, an exhaust sleeve and a compression sleeve between a screw and an inner sleeve, the method extrudes material into the compression sleeve through the screw, the exhaust cylinder and the exhaust sleeve, secondarily extrudes the material in the compress sleeve and outputs the material through the inner sleeve. The invention can increase unit time material-transporting amount of the bar-producing machine, avoid wearing of the inner sleeve, improve maintainability of the screw, reduce material waste, reduce production cost and increase product quality. The unit time material-transporting amount can reach 200-400 kg / h, and density of charcoal rod can reach 1.1-1.5 kg / cm3. The quality of the charcoal rod is good, calorific value of the charcoal rod can reach 8000 kilocalories, interior of the charcoal rod is loose, exterior of the charcoal rod is compact, the charcoal rod is fast on fire in combustion process, combustion time is long, and residual ash on surface of the charcoal rod is easy to fall off.

Description

technical field [0001] The invention relates to an extruding device, in particular to a screw extruding method device of a bar making machine. Background technique [0002] The rod making machine used in the charcoal industry has a screw extrusion device for pressing wood chips into charcoal rods. The screw used for pressing material in the existing extrusion device is installed in the inner sleeve, and the through hole on the inner sleeve is a tapered hole. After a period of use, the screw and the inner sleeve will be worn and cannot be repaired. It is scrapped after one or two months of use, and new inner sleeve parts are replaced, resulting in waste of materials and higher production costs. In addition, the pressing device of the existing rod making machine heats and presses the wood chips through the tapered hole in the inner sleeve. Since the tapered hole in the inner sleeve has a small taper and a long length, during the extrusion process, the material in the material...

AI Technical Summary

Problems solved by technology

The screw used for pressing material in the existing extrusion device is installed in the inner sleeve, and the through hole on the inner sleeve is a tapered hole. After a period of use, the screw and the inner sleeve will be worn and cannot be repaired. It is scrapped after one or two months of use and replaced with new inner sleeve parts, resulting in waste of materials and high production costs

In addition, the pressing device of the existing rod making machine heats and presses the wood chips through the tapered hole in the inner sleeve. Since the tapered hole in the inner sleeve has a small taper and a long length, during the extrusion process, the material in the material The gas discharge is not smooth, and the material blockage is prone to occur during the production process, which makes the feeding volume of the rod making machine per unit time small, so the output is also small; and the density of the extruded carbon rods is tight on the outside and loose on the inside, so that the extruded carbon rods are in the combustion process. Moderate fire is slow, the burning time is short after fire, the residual ash on the surface is not easy to fall off, which affects the temperature, and the calorific value is low

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