The Auxiliary Equipment Often Used on Silos
The selection of auxiliary equipment plays an important role in silo construction process. Choose the proper auxiliary equipment can help us improve the silo storage efficiency, save energy, and give us more convenience.
The auxiliary equipment often used on silos mainly include four categories: the loading and unloading equipment( the conveying equipment), the material processing equipment, the material detection and management equipment, and the electric control equipment.
Functions of These Silo Auxiliary Equipments
The loading and unloading equipment
The loading and unloading equipment is also called the conveying equipment. It is used to feed materials into the silo or discharge them from it. There are two ways to transport the materials to or from the silo. One is called vertical transportation, and the other one is called horizontal transportation.
The vertical transportation mainly uses a vertical stranded auger and an elevator, commonly a bucket elevator. The specific number of the equipment should be used and the configuration lines should be set is according to the storage requirements.
The horizontal transportation mainly uses a dragline, an air cushion belt conveyor, or a buried scraper conveyor. The air cushion belt conveyor is suitable for the long-distance horizontal transportation, and is used for the silo equipment with more feed intake and less outlet. The buried scraper conveyor is mostly used in the silos with less feed intake and more outlet. The two kinds of equipment can reduce dust flying because of their airtight enclosure. Air cushion belt conveyor is formed by tail frame and middle section, the middle section part is an airbox, gas compartment by machine groove and curved hole plate, run by a high-pressure fan blowing air intake box, blowing out from the arc hole plate, an air cushion is formed between the arc belt hold hole plate and belt, bearing materials.
Storage silo often adopts a scraper conveyor on the silo roof, which is supported by the trestle bridge. One set of scraper conveyor can support the warehousing operations of a number of storage silos. The buried scraper conveyor has many advantages such as small size, small occupied space, and can make the warehouse top channel spacious, beautiful and neat arrangement. The air cushion belt conveyor at the bottom of the storage silo is usually set up 1 sets per row of silos and can receive materials from several storage silos.
The material processing equipment
The material processing equipment includes two types: gasification equipment and dust removal equipment.
The gasification equipment is designed for the highly efficient discharge of large storage silos. The design and customization of the large storage silo gasification tube discharge system is the key to discharge the silo. The discharge rate also depends on the layout of the gasification tube. Scientific and reasonable gasification tube system layout can not only save costs and energy consumption, but also make the discharge rate increase to 98%.
Roots blower is widely used when the exhaust pressure is less than 100kPa. The equipment has a wide range of volume flow and can provide oil-free air. In addition, it has a constant speed curve. When the transmission pressure increases, the volume flow rate is only slightly smaller than the ring ratio, thus ensuring the suspended flow state of the material under certain pressure.
Dust removal equipment is designed to keep the working environment clean, improve workers’ working conditions and prevent dust explosion. Exhaust inlet is set up at the head discharge port, the tail inlet, the first cleaning screen, the automatic scale, the belt conveyor and so on. In all parts of the conveying system, the dust removal pipes are connected with the dust removal equipment.
The material inspection and management equipment
During the use of storage silos, we should regularly examine the temperature and humidity of the storage material. According to the stored materials and their storage time, we should take necessary preventive measures (such as cooling, transportation, etc.) to ensure the storage is completely safe. This requires the storage silos to be equipped with the corresponding ventilation system, temperature measurement and humidity measurement system, and thermal insulation system.
The electric control equipment
The operation or failure of various mechanical equipment in the modern steel silo is automatically controlled and monitored by the central control room for long distance. The electronic control equipment is used to control the working state of the whole steel silo system. The electric control equipment has to be set up in an independent room, that is, the electric control room. The room can be set in the working tower or under the steel silo, but it must be a closed environment, otherwise, there may be a safety accident.
Select Auxiliary Devices Based on the Target Material
The installation of the above auxiliary equipments needs to be decided according to the different storage materials, cause different materials may have different storage requirements. For example, the grain silo must be equipped with dust removal equipment, cleaning equipment and fumigation equipment, temperature measurement and moisture measurement equipment. Cement and fly ash silos must be equipped with gasification equipment, temperature measurement and humidity measuring equipment, etc.
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