Computer Aided Modeling of Wood Chips Transport by Means of a Belt Conveyor with Use of Discrete Element Method

Gierz, Łukasz; Warguła, Łukasz; Kukla, Mateusz; Koszela, Krzysztof; Zwiachel, Tomasz

doi:10.3390/app10249091

Cited by 17 publications

(9 citation statements)

References 56 publications

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“…The variability of throughput can be caused by the material structure, its moisture content and the adhesive abilities of particles. Wet particles with the adhesive properties will cause problems with the material flow [80][81][82][83], because agglomerates will be created and some material will stick to the discs and walls of the comminution chamber. This makes some part of the material remain in the grinding chamber, and there may also be moments when the residual material peels off, causing abrupt increases in efficiency, which was further described in [41,45,46].…”

Section: Discussionmentioning

confidence: 99%

Study of the Relationships between Multi-Hole, Multi-Disc Mill Performance Parameters and Comminution Indicators

et al. 2021

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The knowledge of a grinder structure, its performance parameters and characteristics of biomaterials breakage are crucial for this research whose aim is to determine the dependencies between performance parameters and comminution indicators. The aim of this study is to investigate the relationships between multi-disc mill performance parameters such as discs angular speed, batch dosing speed and comminution characteristics: power consumption, specific energy consumption, throughput and size reduction ratio. To achieve these goals, an experiment was conducted on a five-disc mill with a special monitoring system. The research program was established, with disc angular speed at different configurations and different batch dosing speeds. The results show that power consumption, specific energy consumption and size reduction ratio depend on the total increase in angular speed of discs SΔω in such a way that an increase in SΔω causes an increase in the abovementioned comminution indicators. In turn, an increase in batch dosing speed W causes an increase in throughput. The fitting curves of comminution indicators in dependence of selected performance parameters are also presented in this study.

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Section: Discussionmentioning

confidence: 99%

Study of the Relationships between Multi-Hole, Multi-Disc Mill Performance Parameters and Comminution Indicators

et al. 2021

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“…The tape processing was performed in accordance with the guidelines contained in [ 31 ]. In order to adapt the tape to the test stand, it was shortened and joined with an overlap [ 32 , 33 ] and the elements were joined with a polychloropene adhesive with the designation by CX manufacturer [ 34 , 35 ].…”

Section: Test Stand and Test Conditionsmentioning

confidence: 99%

Assessment of Padding Elements Wear of Belt Conveyors Working in Combination of Rubber–Quartz–Metal Condition

Romek¹,

Ulbrich²,

Selech³

et al. 2021

Materials

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Elements of belt conveyors, like other machine parts, are subject to wear processes. The conveyors transporting the spoil in the quartz sand mine are exposed to accelerated wear due to the effect of quartz on metal elements. Intensive wear of metal parts leads to downtime and the need to replace damage parts which generates additional costs. Therefore, it is important to perform surface treatment of metal elements, which will allow to extend the operation time of belt conveyors by reducing wear. The main objective of the article is to determine the impact of the pad welding process of the surface layer of metal elements on the abrasive wear of elements working in the metal–quartz sand–rubber conditions used in belt conveyors. In this research study, three different types of electrodes were used for pad welding the surface. The wear results obtained on the test stand were compared to wear of the basic element without surface treatment. The average wear value of the samples padded with electrode 3 was about 25% lower than the samples without surface treatment. The main mechanism of sample wear was the abrasion process due to the interaction between the steel surface and hard sand particles. The results presented in the article are important not only for belt conveyor elements but also for other machine parts where it is desirable to reduce abrasive wear.

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“…FEM is used for tests [27], and for tests of joints between the machine elements [28]. DEM is used in simulation of the transport process [29], milling [30], crushing, sieving, and many more processes that use granular material. According to the results of analyses and the literature, the DEM method is an effective tool to be used for simulation of granular materials [31] and is the most suitable for optimization of a piezoelectric sensor chamber.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Sowing Unit of a Piezoelectrical Sensor Chamber with the Use of Grain Motion Modeling by Means of the Discrete Element Method. Case Study: Rape Seed

et al. 2022

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Nowadays, in the face of continuous technological progress and environmental requirements, all manufacturing processes and machines need to be optimized in order to achieve the highest possible efficiency. Agricultural machines such as seed drills and cultivation units are no exception. Their efficiency depends on the amount of sowing material to be used and the patency of seed transport tubes or colters. Most available control systems for seed drills are optical ones whose operation is not effective when working close to the ground due to large dusting. Thus, there is still a need to provide seed drills with sensors to be equipped with control systems suitable for use under conditions of massive dusting that would shorten the time of reaction to clogging and be affordable for every farmer. This study presents an analysis of grain motion in the sowing system and an analysis of the operation efficiency of an original piezoelectric sensor with patent application. The novelty of this work is reflected in the new design of a specially designed piezoelectric sensor in the sowing unit, for which an analysis of indication errors was carried out. A seed arrangement of this type has not been described so far. An analysis of the influence of the seed tube tilt angle and the type of its exit hole end on the coordinates of the grain point of collision with the sensor surface and erroneous indications of the amount of sown grains identified by the piezoelectric sensor is presented. Low values of the sensor indication errors (up to 10%), particularly for small tilt angles (0° and 5°) confirm its high grain detection efficiency, comparable with other sensors used in sowing systems, e.g., photoelectric, fiber or infrared sensors and confirm its suitability for commercial application. The results presented in this work broaden the knowledge on the use of sensors in seeding systems and provide the basis for the development of precise systems with piezoelectric sensors.

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Computer Aided Modeling of Wood Chips Transport by Means of a Belt Conveyor with Use of Discrete Element Method

Cited by 17 publications

References 56 publications

Study of the Relationships between Multi-Hole, Multi-Disc Mill Performance Parameters and Comminution Indicators

Study of the Relationships between Multi-Hole, Multi-Disc Mill Performance Parameters and Comminution Indicators

Assessment of Padding Elements Wear of Belt Conveyors Working in Combination of Rubber–Quartz–Metal Condition

Optimization of the Sowing Unit of a Piezoelectrical Sensor Chamber with the Use of Grain Motion Modeling by Means of the Discrete Element Method. Case Study: Rape Seed

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