Double-screw conveyor

Abstract

The invention relates to a double-screw conveyor which comprises a driving device, a shaftless screw conveying mechanism, a shafted screw conveying mechanism, a feeding port and a discharging pipe. The shaftless screw conveying mechanism comprises a cavity, shaftless screw blades arranged in the cavity, and bushings for supporting the shaftless screw blades; the shafted screw conveying mechanism is arranged at the bottom, close to the tail end, of the shaftless screw conveying mechanism in parallel; the length of the shafted screw conveying mechanism is one part of the shaftless screw conveying mechanism; the upper part of the shafted screw conveying mechanism is communicated with the bottom of the cavity of the shaftless screw conveying mechanism; the feeding port is formed in the head end of the cavity; the driving device is arranged at the tail end of the cavity; shaftless screw blades of the shaftless screw conveying mechanism are close to a center shaft of the shafted screw conveying mechanism; and the two screw blades do not collide with each other when rotating. According to the double-screw conveyor provided by the invention, a discharge port can be sealed, and meanwhile, materials are not easy to block and can be crushed, so that the purpose of long-distance transportation can be realized.

Description

technical field [0001] The invention belongs to the technical field of material conveying equipment, and in particular relates to a double-screw conveyor. Background technique [0002] Screw conveyors can be divided into shaft screw conveyors and shaftless screw conveyors in terms of conveying form, and can be divided into U-shaped screw conveyors and tubular screw conveyors in terms of appearance. The working principle of the screw conveyor is that the rotating helical blades push the material to convey the material. Shafted screw conveyors are suitable for non-viscous dry powder materials and small granular materials (such as: cement, fly ash, lime, grain, etc.), while shaftless screw conveyors are suitable for conveying viscous and easily entangled materials. When the screw shaft rotates, due to the gravity of the material and the friction generated by the wall of the tank, the material can only move forward along the bottom of the conveyor tank under the push of the bla...

AI Technical Summary

Problems solved by technology

However, the shafted screw conveyor is prone to material clogging, and the shafted screw conveyor has a long central shaft, which is easy to be out of center and difficult to process, so it cannot complete long distances. transportation

[0005] Therefore, for the transportation of materials over a long distance, and the outlet of the materials is in a closed state, and it is hoped that the materials will not be blocked and can be crushed to a certain extent, the above-mentioned shafted screw conveyors and shaftless screw conveyors cannot achieve the above. Purpose

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