A combined twin-shaft continuous mixer

Abstract

The invention discloses a combined twin-shaft continuous mixer, which comprises a main mixing structure and a conveyor belt structure, the main mixing structure includes a mixing drum, the mixing drum is supported by a mixing drum frame arranged on it, and the top of the mixing drum is provided with There is a material inlet and a discharge port at the bottom. Two stirring shafts are arranged side by side inside the mixing drum. The stirring units on the two stirring shafts are arranged alternately. One side of the mixing drum is equipped with power and its transmission structure. The conveyor belt structure is designed In the lower part of the mixing drum, the conveyor belt structure includes a conveyor belt, a driving drum that can rotate clockwise or counterclockwise and can be tuned to provide power for the conveyor belt, and a guide roller that acts as a guide. The conveyor belt also serves as the bottom surface of the mixing drum. The bottom of the mixing drum of the present invention is composed of a movable conveying belt to adjust the flow characteristics of the stabilized soil material in the mixing drum, effectively increase the time for the stabilized soil material to be stirred in the mixing drum, thereby increasing the uniformity of stirring of the stabilized soil.

Description

technical field [0001] The invention belongs to the field of stabilized soil material mixers, and relates to a continuous mixer, in particular to a combined twin-shaft continuous mixer for producing stabilized soil materials. Background technique [0002] Twin-shaft continuous mixer, as the core working device widely used in stabilized soil plant mixing equipment, determines the mixing quality and efficiency of finished stabilized soil and other pavement base materials. This kind of mixer mainly uses the motor to drive the mixing unit (stirring shaft, stirring arm, stirring blade) to rotate in the mixing drum to realize continuous forced stirring of the pavement base material. Since the stabilized soil material has the characteristics of continuous feeding, continuous mixing and continuous discharge during work, the length of the mixing drum of the continuous twin-shaft mixer is limited, and the residence time (time to be stirred) of the stabilized soil material in the mixin...

AI Technical Summary

Problems solved by technology

The simplest method is to directly increase the overall length of the mixing drum, but at the same time, the rigidity of the stirring shaft will deteriorate sharply, which will easily cause a series of problems such as deformation of the stirring shaft, excessive bearing load, and reduced reliability of the machine; some use two Two-stage stirring of an independent mixer, but this method complicates the mixing equipment, increases the space occupied by the mixing equipment and equipment cost; some reduce the stirring speed to increase the residence time of the stabilized soil material in the mixing drum, but This method will simultaneously cause a decrease in the circumferential speed of the mixing, thereby reducing the effect of the forced mixing of the stabilized soil material along the vertical and transverse directions of the mixing drum, and will still lead to poor uniformity of the produced stabilized soil material

[0004] At the same time, the existing twin-shaft continuous mixer generally adopts a structure without a liner. During the production process, the stabilized soil material will adhere to the inner wall of the mixing drum. Although it can form a certain protection for the drum wall during mixing, the The cleaning of this layer of adhesive material after production is time-consuming and laborious

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