Double-shaft double-speed stirring tank for foamed concrete

Abstract

The invention belongs to the technical field of foamed concrete stirring, and particularly relates to a double-shaft double-speed stirring tank for foamed concrete. The double-shaft double-speed stirring tank for the foamed concrete comprises a tank body and a stirring mechanism, the stirring mechanism comprises an upper stirrer, a lower stirrer, an outer shaft and a core shaft, the upper stirreris fixed on the outer shaft, the outer shaft is a hollow shaft, the core shaft penetrates through the center of the hollow shaft and extends to the bottom of the tank body, and the lower stirrer is fixed on the core shaft, the outer shaft and the core shaft are respectively in transmission connection with a first driving piece and a second driving piece. Two sets of stirrers with different rotating speeds and structures are designed in one stirring tank body, the core shaft and the outer shaft respectively drive one set of stirrer to rotate, meanwhile, two sets of speed reducing motors are adopted to drive the two sets of stirring systems at different rotating speeds respectively, the two sets of stirrers are designed in a one-up and one-down mode, it is guaranteed that dry and wet slurrycan be stirred at a normal speed, and it is guaranteed that the foamed foaming agent and the slurry are fully mixed through high-speed stirring of the lower portion.

Description

technical field [0001] The invention belongs to the technical field of foamed concrete mixing, in particular to a foamed concrete biaxial and double-speed stirring tank. Background technique [0002] Concrete engineering construction technology has developed very rapidly all over the world. Up to now, foam concrete has been widely used in energy-saving wall materials due to its good characteristics, and has also been applied in other aspects. At present, the application of foam concrete in our country is mainly the cast-in-place foam concrete insulation layer of the roof, the foam concrete surface block, the foam concrete lightweight wallboard, and the foam concrete compensation foundation. However, making full use of the good characteristics of foam concrete can continuously expand its application field in construction engineering, speed up the progress of the project, improve the quality of the project, and has a very broad development prospect. The foam concrete producti...

AI Technical Summary

Problems solved by technology

[0003] In actual production, there are generally several types of mixing tanks. First, open mixing tanks have shortcomings such as no closed tank body, poor working environment, and high labor intensity. Second, single-motor, single-axis closed mixing tanks, However, the stirring speed of this mixing tank is too slow, and there are generally phenomena such as uneven quality of foamed concrete products or poor foaming effect.

[0004] After experiments and process analysis by our technicians, it is concluded that in the whole process of foam concrete production, the mixing process is a crucial step. In the first step, the two dry powder materials and water need to be fully mixed and stirred, and the stirring speed is average. It is 20~30r / min. In the second step, the foaming agent after foaming is added to fully mix with the slurry. This requires high-speed stirring (about 750r / min). The current stirring speed of the mixing tank cannot meet the requirements of fully mixing the foam. Requirements, since the structure of the high-speed stirrer and the low-speed stirrer are not the same, it is not suitable to use a single motor and a single shaft to realize it. In addition, because the speed of high-speed stirring and low-speed stirring is very different, it is very difficult to use a single motor and a single shaft. , and we have done experiments in the form of single motor and single axis, and the effect is relatively general

[0005] In addition, since various raw materials are often not fed at the same time when feeding, dry material precipitation is prone to occur due to gravity and uneven stirring.

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