Diameter-variable pitch-variable hard-plastic extruding rimer group of building material machine extruder

Abstract

A variable-diameter variable-pitch hard plastic extrusion reamer set for a mechanical extruder of building materials. It is composed of multiple helical reamers and reamer shafts. The starting point of the knife blade coincides with the adjacent segment blades to form a coherent reamer group. The special structural design and high anti-wear performance of the reamer group are more suitable for the brick-making technical requirements of low-plastic non-clay raw materials. The allowable extrusion pressure is ≥ 4mPa, which is 50% higher than that of ordinary reamers. The service life is longer than that of ordinary reamers. 8-10 times of that, and the appearance quality of adobe is obviously improved.

Description

technical field [0001] The invention belongs to the field of physical forming machinery, especially brick and tile machinery manufacturing in building material machinery. Background technique: [0002] As we all know, in the sintered brick production line, the screw extruder is the key to the whole set of mechanical equipment, and the spiral knife in the extruder is the key to the key. Not only the specification, model, production capacity and extrusion pressure of the extruder The main technical parameters are determined by it, and the efficiency of the whole production line, the quality of the product, the size of the energy consumption, the length of the service life, and the economic benefits of the brick factory are all closely related to the spiral reamer. Relationship. [0003] At present, the spiral reamer used in the brick extrusion machine used in my country's brick and tile industry is basically the technical model in the early stage of reform and opening up. It ...

AI Technical Summary

Problems solved by technology

However, with the implementation of the national wall reform policy, the work of "prohibiting solid and restricting stickiness" and energy saving and consumption reduction has been fully carried out. Coal gangue, shale, fly ash and industrial waste have been used as the main raw materials for brick making, with thin walls, high strength and large cavities. High efficiency, good thermal insulation performance has become the requirement of the times for brick products, thus promoting the technological progress of the brick and tile industry, one-time code firing in tunnel kiln, high-pressure full-hard plastic vacuum extrusion and large-scale, high-yield, fully automatic New technologies, new processes, and new equipment such as electronically controlled production lines have been gradually adopted. The traditional spiral reamer is far from meeting the requirements of modern brick and tile production in terms of performance, strength, adaptability to non-clay raw materials, and service life. Requirements restrict the development of brick extruder technology

[0004] At the same time, the equidistant and uniform-diameter extruding reamers of extruders in the existing building materials technology field are not only unsuitable for building materials such as coal gangue, shale, fly ash and industrial waste residues with low plasticity, and the screw and reamer shaft adopt Sliding flat key connection, easy to loose and reduce accuracy

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