Improving the efficiency of unloading loose material with small-sized chamber feeders

Abstract

The article considers ways to increase the productivity of a small cellar feeder due to the intensification of aeration processes when moving the transporting material. Technical solutions of aerators, which are capable of accelerating the process of aeration of a transporting mixture, are offered. Also, the use of fundamental structures of aerators and their connection into a single system of aeration device is considered. This will allow further research and improvement of transportation of bulk materials to solve the problem of optimizing the volume and shape of the camera for a small cellar feeder. The proposed designs will provide the opportunity to increase the productivity of small cellular feeders and save energy costs for the transportation of bulk materials.

On the basis of researches it was established that the total costs of compressed air for feeding the small cellular feeder with the productivity of 55-60 t/h make 30-35 m³/min. Of the total amount of compressed air consumption, 10-12 m³/min is consumed for aeration systems. The proposed design of a multi-plumbing aeration device has a number of features, increasing its efficiency compared with other structures of aeration devices, which are known in previous designs in feeder chambers. The vortex aerators are the most promising for the preparation of the transporting mixture in the chamber of the feeder, but their efficiency and scope in the construction of small-cell chamber feeders are currently not sufficiently investigated in laboratory studies and industrial facilities.

Improving and extending the efficiency of aeration devices, their use in chamber feeders to intensify the aeration processes of transporting bulk material can significantly improve the productivity of a small cellular feeder and enable the reduction of energy consumption for the production of compressed air. The design of the modernized diaphragm differential drive is implemented in the control system of a small cellar feeder, which works during the transport of coal dust at the Slavyanskaya TPP. In operation at the operating company, it declared itself as a reliable structural element of the transport system, which provides reliable operation for the period of warranty resource of the chamber feeder.