Substrate forming device for producing reconstituted tobaccos through dry paper-making method

Abstract

The invention relates to a substrate forming device for producing reconstituted tobaccos through a dry paper-making method. The substrate forming device comprises a forming mesh belt, a mesh belt conveying device, a machine frame 18 and forming heads. Each set of forming heads is symmetrically provided with a first screen drum 13 and a second screen drum 14, two fiber conveying pipes are arranged in each screen drum in the axial length direction of the screen drum, the two fiber conveying pipes are symmetrically arranged on the upper half portion in the corresponding screen drum, the lower portions of the screen drums are provided with scattering rollers, and the scattering rollers are located under the centers of the screen drums. Front annular channels are arranged between the fronts of the first screen drums and the fronts of the second screen drums, rear annular channels are formed between the backs of the first screen drums and the backs of the second screen drums, and the annular channels enable the inner spaces of the screen drums to be communicated. Two fiber conveying pipes are arranged in each screen drum and the lengths of the fiber conveying pipes are different, so that fiber outlets are increased, and the fiber conveying accuracy is effectively improved; a front annular channel and a rear annular channel are formed between the two screen drums in each forming head to communicate the spaces in the two screen drums, so that fibers stacked inside the parts, located at the two ends of each screen drum, of a box body are reduced.

Description

technical field [0001] The invention belongs to the technical field of tobacco material manufacture. In particular, it relates to a substrate forming device suitable for producing reconstituted tobacco leaves by dry papermaking. Background technique [0002] Reconstituted tobacco leaves, also known as reconstituted tobacco leaves and homogeneous tobacco leaves, are mainly composed of tobacco powder, chips, tobacco stems or low-grade tobacco leaves, plus some foreign fibers, adhesives and other additives. Reconstituted tobacco leaves have been widely used in cigarette production as a raw material for tobacco products. The reconstituted tobacco leaves made of low-grade tobacco raw materials have the characteristics of low cost, good filling performance, and can reduce the tar content in the smoke. The manufacturing began in the 1950s. The main manufacturing methods are: papermaking method, thick pulp method and There are three kinds of rolling method. Due to the backward te...

AI Technical Summary

Problems solved by technology

The existing air-laid paper production equipment and the air-laid paper base sheet forming device have only one fiber delivery pipe, and the fibers cannot be evenly fed into the screen drum through a single pipe, and the fibers cannot be evenly scattered by the breaking rollers and fall onto the forming net; Secondly, the existing air-laid paper production equipment and the air-laid paper substrate forming device are in a box surrounded by two screen cylinders outside the forming head. During the production process, fibers will accumulate, and the accumulated fibers will enter the screen unevenly. Although the fiber is broken up by the breaking roller, the fiber still cannot evenly fall onto the forming net, and forms a lump of pulp, which affects the quality of the substrate.

[0006] Existing air-laid paper production equipment and air-laid paper substrate forming devices cannot meet the substrate forming requirements of dry-laid papermaking to produce reconstituted tobacco leaves. For example, Chinese utility model patent CN2

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