The article presents cleaning technologies and considers an improved device for cleaning drainage wells, which allows to increase the productivity and quality of cleaning drainage wells, reduce labor costs, and water consumption. The device is simple, reliable, and highly maintainable, allowing you to operate it in the mode of economy and consumption of a large volume of water. The proposed device received a copyright certificate for the invention. A cable system is provided in this device, and a ruff head is stretched inside the drainage pipe, which has the ability to deviate and rotate along the longitudinal axis of the drainage pipe, the ruff is pulled by winches through adjustable and fixed blocks, and the mounting frames are installed in inspection wells and fixed with bolts and successively reinstalled from one well to another. Theoretical prerequisites have been developed for determining the maximum force in the closing, hoisting rope, the required power for closing the jaws and lifting the bucket, the diameters of the corresponding drums and ropes.

One of the most important issues of sowing small-seeded crops (in the example of onions) is considered. The method of sowing has a great influence on crop yields. The choice of planting method is due to the need for a more uniform distribution of plants over the field area in order to optimize the conditions for their development. Studying the movement of seeds during the sowing process is the most important task, as the seeds are object of sowing. The article provides an analysis of previous work on the precision sowing of small seed crops. And also, the flight and the trajectory of the seeds from the ejection window to the bottom of the groove were studied theoretically. In the research, methods of higher mathematics, classical mechanics, and impact theory were used in which it was possible to obtain the necessary equation. Based on the numerical solution of the obtained equation, graphs are constructed that determine the trajectory of falling onion seeds when ejected from the sowing apparatus and the graphical dependence of the recovery coefficient on the height of the sowing apparatus. Also, the installation height of the metering unit was installed.