In the assembly of metal grain silos, bolts and nuts with a special zinc protective coating are used. If necessary, then a heater or a refrigeration machine is connected to the fan.Īir supply of various temperatures (chilled, warmed up or ambient temperature) is used for ripening, cooling or preservation of grain by cold during storage. It is arranged within the concrete basement and covered with special perforated structures.Īlso, to create active ventilation, roof and wall ducts are mounted. The long-term grain storage silos are equipped with a bottom-aeration system. The system of active ventilation of an agricultural silo includes air channels and one or more fans. Due to the appropriate calculation of the height of the supports, the grain is unloaded from the silo by gravity to the conveyors, which are installed under the valve, at the foundation level. This ring transfers the load from the weight of the metal structures and the weight of the stored grain to the vertical supports of the silo, based on a concrete foundation slab. In the upper part, the bottom cone is attached to the main support ring. In the lower part of the conical bottom of the grain storage silo there is an unloading device made in the form of a rack and pinion valve. Sectors on bolted connections with special sealing latches are fastened. The angle of the bottom is 45 °, 55 ° or 65 °, thereby creating optimal conditions for the gravity discharge of the stored grain product. Metal grain silo conical bottoms are mounted from trapezoidal steel sectors. Short-Term Grain Storage Silo Cone Bottoms To form a reliable and durable joint, vertically located stiffeners are fastened with overlays that are identical in shape to the ribs themselves, or using special plates. Often, two stiffeners are used on each panel, but in some models of grain bins, to increase the strength on one panel, stiffeners are mounted in three rows. The grain bin shell is reinforced with vertical stiffeners, which are installed on the outside. The thickness of the zinc coating varies from 18 to 40 microns. Galvanized steel serves as the main material from which all panels of the agricultural silo shell are made. Additional devices, for example, mechanisms for sampling a stored product from various levels, are installed if necessary. The panels are assembled on bolted joints with sealing polymer gaskets.Īir channels, a level sensor, and a ladder are mounted on the shell. The shell of silo for storage of grains has the shape of a cylinder and is made of galvanized steel panels of a wavy profile. Thanks to the special roof construction, precipitation and birds cannot get into the silo. Air ducts are also provided on the roof, which are sometimes equipped with special fans. On the roof of a silo for storage of grain, a loading device, an inspection hatch, a service ladder and a set of devices for thermal suspensions of the layer-by-layer temperature control system for the grain mass are installed. This allows the roof to withstand snow loads of up to 320 kg / m2. The roof sectors are made of galvanized steel.ĭepending on the diameter, the agricultural silos can be equipped with a single-level, two-level and three-level roof. The height of the stiffeners is up to 200 mm. The roof of the metal grain silo is a complex spatial structure consisting of sectors in the form of a trapezoid, bolted through gaskets, as well as stiffeners. Stairs, upper and lower hatches are used for the most comfortable and easy maintenance, repair and cleaning of equipment and structures of the grain storage silo. Grain is taken into the silo, it is stored and unloaded, product samples are taken, its disinfection and low-temperature drying are carried out. Metal grain silo not only makes it possible to accumulate and store wet grain using ventilation and cooling the product, but also ensure minimal expenses and losses during this process. The ventilation system controls the air flow. Most grain storage silos manufacturers equip their tanks with various systems of layer-by-layer temperature control of stored crops and active ventilation. Metal grain storage silo is a ventilated tank made of steel in the form of a vertical cylinder, equipped with a roof and a bottom, as well as with special channels for ventilation of the storing product. The described grain silos are widely used in grain cleaning and grain drying systems, which are created at grain receiving, seed processing and grain processing enterprises, as well as elevators. This equipment can be used in all weather conditions. Silo for storage of grains reliably protects the loaded grain from various atmospheric precipitation and other spoilage - for example, by birds and rodents.
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