Abstract
The work is devoted to modeling the regularities of hydraulic pressure distribution and fluid removal from the fibrous material in the contact zone. It was found that the hydraulic pressure in the compression zone increases from zero at the initial point of contact to a maximum at the point of maximum compression of the fibrous material. The patterns of distribution of hydraulic pressure in the recovery zone depend on the length of the section, where the fluid moves from the layer of material to the elastic coatings. It was revealed that the amount of liquid removed at the beginning of the compression zone grows faster, then the growth rate is much lower, and at the end of the compression zone, the removed liquid is stabilized. The patterns of change in the removed fluid in the recovery zone depend on the angle, which determines the position of the point where the fluid changes direction.
Highlights
A special group in the technology of mechanical processing of materials in roller machines is the roller pressing of fibrous materials
The roller pressing of fibrous material consists of two aspects - contact interaction and hydraulic interaction
Analysis of works devoted to the main hydraulic problems, such as modeling the regularities of the distribution of hydraulic pressure [9,10,11,12,13,14,15,16] and modeling the residual moisture content of fibrous material [17-23], showed that the existing models of the distribution of hydraulic pressure and changes in residual moisture were obtained with the introduction of two-roll models and materials that do not correspond to the real physical phenomena of the roller pressing of fibrous materials
Summary
A special group in the technology of mechanical processing of materials in roller machines is the roller pressing of fibrous materials. The roller pressing of fibrous material consists of two aspects - contact interaction and hydraulic interaction. In this case, a change in the indices of the first aspect affects the change in the indices of the second aspect and vice versa. The theory of roller pressing of fibrous materials presents a joint solution of two problems - contact and hydraulic problems. Analysis of works devoted to the main hydraulic problems, such as modeling the regularities of the distribution of hydraulic pressure [9,10,11,12,13,14,15,16] and modeling the residual moisture content of fibrous material [17-23], showed that the existing models of the distribution of hydraulic pressure and changes in residual moisture were obtained with the introduction of two-roll models and materials that do not correspond to the real physical phenomena of the roller pressing of fibrous materials. The work is devoted to solving the problem of modeling the regularities of the distribution of hydraulic pressure and changes in the residual moisture content of the squeezed material, taking into account the results of solving the contact problems of tworoll squeezing modules
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