Anti-wedging type high speed mixer drum

Abstract

A high-speed asphalt agitator without jam has an agitating tank with antiwear liner on its arc bottom, and two agitating axle with blades. It features that the rotational center of said agitating axle and blades and the circular center of said arc bottom are eccentric, so the distance between the tracing of blades and the antiwear liner is gradually increased, resulting in no jam.

Description

technical field [0001] The invention belongs to road construction machinery, and relates to the structure of a paddle-type mixing cylinder of asphalt mixing equipment, in particular to an anti-wedge extrusion mixing cylinder. Background technique [0002] Paddle mixing tank is the main device in the preparation process of asphalt mixture mixing equipment. In the mixing tank, the gravel material, mineral powder and asphalt weighed according to a certain mixing ratio are evenly mixed into the required finished asphalt concrete mixture. The paddle type mixing cylinder mainly includes a cylinder body and a pair of stirring shafts installed side by side in the cylinder body. The paddles for stirring are installed on the stirring shafts, and the arc-shaped bottom surface of the cylinder body is provided with a wear-resistant liner. When the mixing tank is working, the paddles buried in the bottom of the mixing tank in the mixture make the mixture move longitudinally and laterally...

AI Technical Summary

Problems solved by technology

[0003] Conventional tests have shown that when the blade end speed is greater than 2.7m / s, excessive gravel wedging will occur in the gap between the bottom of the cylinder 1 and the blade end, as shown in Figure 1 and attached As shown in Figure 2, due to the paddle 3', the center of rotation of the stirring shaft 2' coincides with the cylinder 1' and the arc center of the liner. During the movement of the paddle, the paddle starts from approaching the liner to leaving the liner. , the gap between the paddle and the liner is constant, when the diameter of the stone is equal to the gap between the paddle liner, stone wedging is prone to occur, at this time the working conditions of the paddle and the liner are very bad, The result is often that the paddle liner crushes the stone, which affects the gradation of the finished material and reduces the product quality, or the paddle entrains the stone and passes through the arc area forcibly, causing severe wear to the paddle liner, or the first two The comprehensive movement of this kind, the result is huge power consumption, increased wear of mixing tank parts and improper crushing of stones

Affect the normal working performance of the equipment

For this reason, the existing equipment of this type generally controls the speed of the tip of the blade to ≤2.7m / s, which limits the improvement of the working efficiency and production capacity of the equipment.

Images