Global rheological approach to the quality of the rollers pumping of dough

Stadnyk, Igor; Novak, Larysa; Matenchuk, Liudmyla

doi:10.5219/867

Cited by 8 publications

(5 citation statements)

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“…The analysis of papers [7,13,17,18,20] proved that the medium velocity unevenness (bread ring yeast wheat dough) is due to the flow nature. Therefore, a significant factor in increasing the effectiveness of the rollers intensive action on the medium is the uniformity of sheeting its elementary volumes running out from the machine working chamber.…”

Section: Resultsmentioning

confidence: 99%

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The Substantiation of the Optimal Parameters for Dough Pinning-Out Rollers

Vitenko¹,

Stadnik²,

Dróździel³

et al. 2020

Adv. Sci. Technol. Res. J.

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The article defines the rather complex and unpredictable movement of the dough in the gap between the working rolls and suggests the calculation for the optimal parameters for the rolls shape (particularly the parameters and their effect on the dough). The functional dependences of the permissible diameter and the gap between rotating rollers were substantiated. The block diagram of the geometric bounding parameters of the gradient field of the viscous fluid flow was proposed and the equation on the basic constructive parameters (h, r) affecting the pouring process efficiency was presented. The analysis of the experimental results revealed that the main features of the machine provide the necessary stable shape products and good rheological parameters of these products. The rheological testing indicators allow for a rational approach to the decision to operate a rolling process. At the same time, they improve the quality control methods and have an influence on the design parameters of rollers and modes of chambers. The proposed method not only allows obtaining a predetermined pressure, but also enables defining the optimal shape of the gap, wherein the pressure gradient is constant.

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Section: Resultsmentioning

confidence: 99%

“…This special medium movement can be divided into two stages. The first one is the adhesive medium contact with the roller surface [20,21]. The speed changes along the roller surface.…”

Section: Complex Effect Of Gap H and Radius-vector Rmentioning

confidence: 99%

The Substantiation of the Optimal Parameters for Dough Pinning-Out Rollers

Vitenko¹,

Stadnik²,

Dróździel³

et al. 2020

Adv. Sci. Technol. Res. J.

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show abstract

“…In real conditions, the dough does not fully contact the surface of the roller working body. According to the work (Nikolaev, 1976), the filling of the rough surface is proportional to the pressure and time of contact of the dough, as well as its viscosity:…”

Section: = 10mentioning

confidence: 99%

Influence of reduction on adhesive properties

Stadnyk

Piddubnyi

Krsnozhon

et al. 2020

Potr. S. J. F. Sci.

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An analytical analysis of the action of rolls on the medium and its behaviour at adhesion bonds with its surface are carried out. The methods and means of carrying out researches on determination of surface roughness are offered, and the experimental setting for determining the adhesion strength is developed. To reveal the essence and understanding of the general research execution, a number of hypotheses for the determination of adhesion are given and a generalized approach to the definition of adhesion is given. The physical nature of the influence of the roughness of the roller surface on the injection of the dies depends on the shape and angle of roughness, the application of mechanical forces, the degree of its previous dispersion (recipe) and its physical and mechanical properties. The nature of the contact interaction of the dough with the rough surface of the roller working organ in the injection nozzle of the fumigation machine is established. Violation of these mutual relations leads to the production of poor-quality products and a reduction in the efficiency of the machine. The contact area of the adhesive and the component forming work for overcoming the adhesion and deformation of the environment in determining the criteria influencing the process according to each particular period of the deformation stage are substantiated. The obtained data give an answer to a number of questions about the possibility of interaction of the surface of the working bodies from the environment. On the basis of their data, the actual change in the contact adhesion in the roller unit of the molding machine with a comparative analysis of existing ones with the newly designed design is considered. It is established that in order to provide a constant area of actual contact, which contributes to better adhesion, and, accordingly, the passage of a qualitative process of tightening, compression and pouring, the necessary condition is the consistency of the specified criteria. This means that the actual contact area , varies from to depending on the ratio of parameters.

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“…These phenomena arise when the relative displacement of the contacting surfaces of two bodies. In studies Deryagin (1963) established the connection between the aunt and the adhesion of the expression: The author (Pawel et al, 2016;Stadnyk, Novak and Matenchuk, 2018) revealed the properties of a dough for the production of bagels, which has elastic, viscous and plastic properties, that is, refers to elastic -visco-plastic bodies. Accordingly (Gorbatov, 1979;Zimon and Yevtushenko, 1985) noted that the adhesion of such bodies, as well as the cogenesis of particles, fluids and films, depends on the area of contact of the medium (adhesive) with the rough metal working surface of the machine.…”

Section: Volume 13 430mentioning

confidence: 99%

Adhesion effect on environment process injection

Stadnyk

Piddubnyi

Karpyk

et al. 2019

Potr. S. J. F. Sci.

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Тhe analytical analysis of roller impact on the medium and its behavior at deformation influences are carried out, ways of choosing an optimal variant of the process for providing the maximum or minimum value of parameters (criterion) are proposed. The physical essence of the equation of energy flows of the intensity of deformation of the mass of the medium, which depends on the method of applying mechanical forces, the degree of its previous dispersion (recipe) and its physical and mechanical properties, is considered. To reveal the essence and understanding of the general research execution, a number of hypotheses for the determination of adhesion are given and a generalized approach to the definition of adhesion is given. The proposed scheme of causal relationships between the medium and roll, divided into three groups, and determine the change in the process of injection dough. The nature of the maximum increase of the forces of interaction of the dough with the high contact of the roller working body in the injection nozzle of the fuming machine is established. Violation of these mutual relations leads to the production of low-quality products and a decrease in the efficiency of the machine. These phenomena are little studied today, and the nature of adhesion requires research. It is noted that the determination of deformation processes during the passage of the process of injection of the medium by roller working bodies plays an important role in calculating the design of molding, roll-over equipment. The deformation in the knot of the injection dough by rolls and the dependence of the work performed on the influence of adhesion on the flow process in the molding machine are revealed. The contact area of the adhesive and the component forming work for overcoming the adhesion and deformation of the environment in determining the criteria that influence the process, according to each particular period of the deformation stage, are substantiated. The obtained data provide an answer to a number of questions about the possibility of regulating the process of the work of agents on the environment.

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Global rheological approach to the quality of the rollers pumping of dough

Cited by 8 publications

References 0 publications

The Substantiation of the Optimal Parameters for Dough Pinning-Out Rollers

The Substantiation of the Optimal Parameters for Dough Pinning-Out Rollers

Influence of reduction on adhesive properties

Adhesion effect on environment process injection

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