Double-horizontal-shaft vibrating and stirring device with main blades and auxiliary blades

Abstract

The invention discloses a double-horizontal-shaft vibrating and stirring device with main blades and auxiliary blades. The double-horizontal-shaft vibrating and stirring device comprises a stirring barrel. Two stirring shafts are arranged in the stirring barrel. Each stirring shaft is sequentially provided with a pushing stirring tool, a plurality of main stirring tools and a return stirring tool in the axial direction. Each main stirring tool comprises the corresponding main stirring blade and the corresponding auxiliary stirring blade which are symmetrically arranged on the corresponding stirring shaft. During the rotation process of the stirring shafts, the directions of axial force and radial force which are generated on materials through the main stirring blades and the auxiliary blades are opposite. Vibration drive mechanisms meeting the dynamic balance condition are arranged on the stirring shafts, and can ensure forced vibration of the stirring shafts, stirring arms arranged on the stirring shafts, and the blades arranged on the stirring shafts. By means of the double-horizontal-shaft vibrating and stirring device, materials are fully stirred in the whole stirring barrel; and meanwhile low-efficiency stirring areas can be effectively eliminated, and the stirring quality and efficiency are improved.

Description

technical field [0001] The invention belongs to the field of concrete mixing equipment, and relates to a double-horizontal shaft vibrating mixing device with main and auxiliary blades. Background technique [0002] As a forced mixer, the twin-shaft mixer has the advantages of good mixing quality, high production efficiency, and strong adaptability, and has become the leading model widely used in current concrete mixing equipment. The stirring device is the core part of the machine, which directly affects the stirring quality and efficiency of the whole machine. It mainly pushes the material to circulate in the mixing drum according to the predetermined track through the rotating motion of the stirring shaft and the stirring blade. Because the mixing blades on the two shafts push the material to flow in the opposite direction along the axial flow and radial flow of the mixing drum, the material not only has a large circular movement of closed axial flow in the mixing drum, bu...

AI Technical Summary

Problems solved by technology

First, the mixing quality is insufficient, that is, although the concrete mixed by the existing ordinary forced twin-shaft mixer has reached uniformity on the macro level, there is still agglomeration of cement particles on the micro level, which not only affects the workability and strength of the concrete The improvement of cement also makes the utilization of cement incomplete, resulting in waste of materials; second, the lack of structure of the mixing device itself, that is, when the existing mixer is working, the mixing blade can only stir a layer of material close to the inner wall of the mixing drum, and the height of the material layer is equal to the height of the blade. The height, but the material at a large distance between the stirring blade and the stirring shaft cannot be well stirred. At the same time, because the speed at which the material is forced to stir is proportional to the radius of the mixing drum, so There is a velocity gradient, that is, the stirring speed decreases from the inner wall of the mixing drum to the stirring shaft along the radius direction of the mixing drum. The closer to the stirring shaft, the lower the stirring speed, and the easier it is for the mixing inefficient zone or even dead Area

The twin-shaft stirring device has the inherent defect of stirring low efficiency area, which not only affects the stirring efficiency and uniformity of stirring, but also easily adheres to the stirring shaft, resulting in the phenomenon of shaft holding

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