A rotary screw unloading device

Abstract

The invention relates to a rotary spiral unloading device which comprises an unloading cylinder, a rotary cylinder, a discharge auger, a discharge auger driving mechanism, a rotary mechanism and a discharging cylinder. The rotary mechanism is arranged below a bottom plate in an external bin, the rotary cylinder penetrates through the bottom plate in the bin and is arranged on the rotary mechanism, the unloading cylinder and the rotary cylinder are coaxial, the unloading cylinder is arranged inside the rotary cylinder, the discharging cylinder is arranged below the rotary mechanism, one end of the unloading cylinder is connected with the inner wall of the rotary cylinder, the other end of the unloading cylinder sequentially penetrates through the bottom plate in the bin and the rotary mechanism to stretch into the discharging cylinder, and an unloading channel is formed by the outer wall of the unloading cylinder and the inner wall of the rotary cylinder. The rotary spiral unloading device has the advantages that the problem of material arching is solved thoroughly, and the requirements for even, stable and accurate discharging is met; the structure is simple, and the capacity rate is greatly improved; the spiral unloading device does not have a middle conveying step at the bottom of a material, therefore, the manufacturing and installing cost is lowered, and the failure rate is lowered; the spiral unloading device is wide in bin diameter adaptability and suitable for all bins with large diameters and small diameters.

Description

technical field [0001] The invention relates to a rotary screw unloading device. Background technique [0002] Since the 1960s, gypsum storage in developed countries and regions in Europe has entered the era of fully enclosed storage. [0003] 1. The experience of the American Weaver Company in silos, marked by the silo in 1901, has gone through a century of testing. Construction of Weaver silo discharge systems since 1963. Its working principle is that a rotary cylinder with a screw conveyor fixed on the upper part is placed at the bottom of the silo. Driven by the lower sprocket and pulley, the screw can not only rotate around the axis to take materials, but also pass the rotary cylinder along the silo. Rotate around the center. The material falls into the closed screw unloader at the bottom of the silo through the rotary drum, and finally the material is discharged. [0004] Advantages: Solve the pollution problem of open storage. [0005] Disadvantages: The lower ro...

AI Technical Summary

Problems solved by technology

[0005] Disadvantages: The lower rotary drum rotates as a whole, only suitable for light materials

[0008] Disadvantages: the discharge gap is small, it is easy to form an arch, it is difficult to handle, and the investment is high

[0011] Disadvantages: There are many internal equipment and complex structure, only suitable for silos with a diameter of 15m or more

[0012] 4. The current situation of domestic gypsum storage is that most of them use traditional gypsum warehouses. After the gypsum is dehydrated, it falls freely from the gypsum dehydration building, and is loaded with a loader to the off-site storage site.

[0015] Disadvantages: poor environmental protection, inconvenient loading, uncertain storage capacity

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