ASSESSMENT OF THE CONSTRUCTION OF SIEVE EQUIPMENT
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Sieve equipment is a type of machine used to separate solid particles. Naturally, its manner of separation is comparable to slow sand filtration; nevertheless, sieving is a piece of unit operation that is carried out. According to Terrence (2018), the sieving equipment works by enabling solid particles of various sizes to pass through the pores or aperture, which is made up of ordered, placed sets of sieves in accordance with the particle sizes and shapes. Sieve equipment comes in a variety of shapes and sizes; the shape is not a determinant of motion, but the size is. Baker (2017) opined that the most common forms are commercial and industrial sieves with shockers, which are often built in large sizes. The small-scale sieve, on the other hand, is frequently manufactured in small shape. The majority of these three varieties are electrified and have a timer and a regulator. Their movement is either zig-zag or 'up and down' (vertical), but recent study has confirmed that the movement can be both 'up and down' and zigzag combined, but it is much more expensive.
These solid particle size analysis equipments are generally employed in the separation of solid particles in pharmaceutical industries, gold refineries, and diamond businesses; and because of their application in these industries and factories, the equipment is not widely used. The sieves were designed in such a manner that particles of varying sizes may flow through the mesh or pores of the sieve plates in a short amount of time. Essentially, sieve equipment consists of a series of sieves, ideally of good quality in line with its speed range. The sieve shoker motor has a speed range of 0.1000 2.pm (revolution per minute), 0-1200 r.p.m, 0-1500 r.p.m, and up to 2600 r.p.m and is commonly used in advanced factories and industries. The sieve equipment works best when the solid particles are coarse and fine (Perry 2015). The equipment has a high sensitivity efficiency, but only a handful have been built since the introduction of particle separation. This is due to the losses sustained and the procedures involved, as well as the labour required to clean the sieve plate and handle the sieve equipment. The sieve shocker, on the other hand, is a device that shakes or vibrates a stack of ordinary sieves and test trays, causing solid particles to sift gradually from the top (with big apertures) to the bottom (with small openings) and a receiver (pan). Mesh sizes are 17.5mm and 7.3mm, 3.0mm, 2.0mm, 1.5mm, 0.04mm, and 0.08mm in descending order. The shaker is an electrical device that consists of an electric motor with a capacity of 1.5 r.p.m. (revolutions per minute) that does the vibration and causes the sieves to shake; a capacitor of 2700 that stores the current; the sieve on/off switch; and a spindle that was placed off centred in the motor to allow the vibration to move in a zig-zag pattern. The sieve shaker is the most critical piece of sieve equipment since there would be no vibration without it.
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