Steel plate bin discharging device

Abstract

The invention discloses a steel plate bin discharging device, and belongs to the field of steel plate bins. The steel plate bin discharging device comprises a bin shell. The interior of the bin shellis divided by a partition plate into an upper chamber and a lower chamber. Multiple discharge areas in conic funnel shapes are formed on the partition plate, a discharge opening is arranged at the bottom of each discharge area, a blocking rod is arranged in each discharge opening, and the lower ends of the blocking rods are connected with a first piston plate located in the lower chamber together.A discharging opening capable of being connected with the low side of the first piston plate is formed on the lower portion of the peripheral side of the bin shell. The upper ends of the blocking rods are connected with lifting rods, and the upper ends of the lifting rods are higher than the upper end faces of materials. Air supply cavities are formed on the inner sides of the lifting rods, air spray nozzles communicating with the corresponding air supply cavity are spirally distributed on each lifting rod in the height direction of the corresponding lifting rod at equal distance, and air supply pipes communicating with the air supply cavities and an air source are arranged in the lower portions of the lifting rods. According to the steel plate bin discharging device, discharging uniformity is good, and materials can be efficiently prevented from being caked.

Description

technical field [0001] The invention relates to the field of steel silos, in particular to a steel silo unloading device. Background technique [0002] At present, various steel silos are mainly used to store powdery and granular materials, and are widely used in various industries. The scale of the steel silo increases with the expansion of the production line. In the past rapid industrialization development, the method of increasing the storage capacity of the powder steel silo is mostly to increase the diameter of the silo and maintain its original height-to-diameter ratio. The large powder steel silo, while the volume of the powder silo has increased, its internal structure has not been upgraded and improved accordingly, and the original unloading structure and original unloading method in the silo are still maintained. [0003] The way of feeding is to inject compressed air into the inflatable box. The compressed air reaches the material layer through the air-permeable...

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Problems solved by technology

[0004] This blanking method has a small diameter in the powder steel silo, and both the silo wall and the central blanking can unload the material under the action of gravity. When the diameter of the powder steel silo becomes larger, the distance between the wall and the center is at the center. The distance of the decompression cone is increased, and the activated material can directly enter the decompression cone under the action of gravity near the feed port on the edge of the decompression cone. The material near the side wall will enter the decompression cone or the mixing chamber depending on the sliding force generated on the slope. The sliding force is the component force of gravity, which is much smaller than the vertical gravity. As the diameter increases, the resistance of the material near the center becomes greater and greater, making it extremely difficult for the material on the edge of the warehouse wall to move to the decompression cone or the mixing chamber in the center, while the material near the center is discharged too quickly, so that The upper powder material in the central part can be discharged quickly, while the material on the side wall does not move for a long time. When the material is discharged, the compressed air blown into the inflatable box in the warehouse contains moisture, which is combined with the material on the edge of the warehouse wall for a long time. Dynamically form a dead material area that cannot be moved, so that materials with hydration properties such as powder and mineral powder will produce plate-forming material, which not only affects the storage capacity of the steel silo, but also affects the homogenization of the steel silo, resulting in large-scale Side wall dead zone phenomenon in steel silo

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