Experimental study of kinematics of raw cotton roller of saw gin with shelling chamber

Аннотация

The article presents the results of an experimental study of the rotation frequency of the raw roller of the saw gin with huller roll box depending on the performance of the saw gin, the distance from the top of the grate to the horizontal axis of the saw cylinder and the position of the comb. Setting the location of the bat in the video, determine the angle and time of recording the video frame. Knowing the time difference and the angle of motion of the bat, determine the angular velocity of the raw roller. To do this, use the program "Windows Movie Maker" for time-lapse recording of drawings in the format "*.png", and to determine the angle of finding the bat use the program "COMPASS". To study the kinematics of the raw roller of saw gin with a peeling chamber, experimental studies were carried out using a full factorial experiment of type 23 depending on the performance of the gin (X1), the distance from the top of the grate to the horizontal axis of the saw cylinder (X2) and the position of the comb (X3), since these parameters affect the rotation frequency of the raw roller. In the pilot study used a cotton variety With 6524 grade I, class 2, 8.19% humidity and 3.68% of the debris The American Journal of Engineering and Technology 133 https://www.theamericanjournals.com/index.php/tajet The American Journal of Engineering and Technology according to the scheme: double-drum peg line feeder chronophotography, etc.) significantly expanded the the working chamber 30 of the saw gin mill chamber understanding of the movement pattern of the working (working chamber Volume is reduced by 30% relative parts of the saw gin. When filming the ginning process, to the serial Gina 5DP-130). it is possible to repeatedly view and analyze visual materials (photos and cinegrams). As a result, it was found that with increasing angle of the comb and the distance from the top of the grate to To experimentally determine the position of the fiber the horizontal axis of the saw cylinder, the rotational slivers captured by the saw teeth in the grate zone speed of the raw roller increases, and decreases with (between the grate and baffle plate) and determine the increasing gin productivity. air resistance force on the sliver of fibers, strobe photography was used with the ST-MEI Keywords: Cotton cleaning, machine, gin, working strobotachometer and the Zenit-3M camera. chamber, grate, saw cylinder, shaft, circular blade, gasket, seed comb, angle, raw cotton roller, rotation, The advent of optical-electronic methods has resolved kinematics, productivity. many questions and significantly improved the quality of information obtained. These methods are based on converting the light from a video image into an electrical Introduction: Cotton ginning plants widely use signal. They utilize a physical phenomenon known as the machines and units manufactured by engineering photoelectric effect, which is the ability of a substance plants in Uzbekistan and the USA; under American to emit electrons when exposed to electromagnetic patents, they are manufactured in India and China [1- radiation, such as light. Currently, optical-electronic 8]. The practice of using US cotton ginning machines at methods are successfully employed in studying motion domestic enterprises has shown their low efficiency, in mechanisms, as well as in analyzing and developing high cost of manufacture and operation since they the most effective parameters. have complex design units and mechanisms. THEORETICAL RESEARCH Research into the design of the working chambers of Figure 1 shows a laboratory stand for video recording of saw gins has shown that feeding raw cotton to the saw the ginning process, namely the rotation velocity of the cylinder as the raw cotton roller increases the power raw cotton roller of a saw gin with a shelling chamber. consumption of the saw cylinder of the working chamber and leads to high wear of the ribs and saw To study the kinematics of the raw cotton roller using a blades [9-16]. video camera, the laboratory stand shown in Fig. 1 was made. The entire ginning process (i.e., the rotation The ginning process is hidden from direct observation velocity of the raw cotton roller) was recorded by video due to specific conditions (the rapidity of the process, camera 4, since the side parts of working chamber 2 are the design of the gin, etc.), therefore, recording transparent. devices must be used to study the rotation velocity of the raw roller. The use of optical methods for recording movement, in particular photography, filming, multiple exposure methods (strobe photography, cyclography, The American Journal of Engineering and Technology 134 https://www.theamericanjournals.com/index.php/tajet The American Journal of Engineering and Technology Fig. 1. Scheme of the laboratory stand for video recording of the ginning process of the working chamber of a saw gin with a shelling chamber: recording. Knowing the differences in time and angle of 1- electric