Automatic manufactured sand gradation fine controller

Abstract

The invention discloses an automatic manufactured sand gradation fine controller. The automatic manufactured sand gradation fine controller comprises a primary presorting control chamber, a fine control chamber and a rock flour separation system. The primary presorting control chamber is changed to negative pressure area by an air draft fan; and particles are stressed to flow to the direction of the fan along a pipe. Fine sand and rock flour are separated by a louvered baffle plate. The relationship between the wind speed of the pipe and the content of the rock flour is calibrated at the beginning; a wind speed signal of the pipe is returned to an electric wind way opening adjusting valve through a wind speed sensor; and the wind speed is adjusted by changing the opening size of the pipe so as to automatically control the content of the rock flour. Thick sand and fine sand are primarily separated by a thick and fine sand separation plate in the primary presorting control chamber; all particle sizes of manufactured sand are separated by screens; the flows of the sand on all layers of the screens are dynamically measured by an impact flow meter; and a flow signal is automatically connected with the size of an electric outlet valve so as to realize automatic fine control of all particle size ratios of the manufactured sand. Concrete is prepared by using the manufactured sand, so that the concrete cost can be reduced, the working performance of the concrete is improved, and the beneficial economic and social benefits are generated.

Description

technical field [0001] The invention relates to the field of machine-made sand production, in particular to automatic fine control of machine-made sand gradation in the machine-made sand production process. Background technique [0002] In the production of traditional machine-made sand, the gradation of machine-made sand is generally unreasonable, mainly manifested in the fact that the content of coarse sand in the machine-made sand is too much, the content of fine sand is too small, and the content of stone powder is unreasonable. For this reason, there are three main technologies for improvement: one is to use a vibrating screen for screening and use a powder separator to remove stone powder; the other is to use a rod mill to adjust the gradation of machine-made sand; the third is to use a blower mechanism to Classification, and then use the screening equipment to adjust the gradation of the machine-made sand. However, none of the above technologies can realize automatic...

AI Technical Summary

Problems solved by technology

However, none of the above technologies can realize automatic fine control of machine-made sand gradation

If the nature and particle size of the raw materials are different, or the crushing equipment is different, the gradation of the produced machine-made sand will change, be unstable, and cannot be automatically and finely controlled.

However, the gradation change of machine-made sand will affect the quality of the prepared concrete, increase the cost of concrete, reduce the performance of concrete, and cause safety hazards to engineering construction.

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