Dry-mixed mortar mixing plant and its screening and crushing system

Abstract

The invention discloses a dry-mixed mortar stirring station and a screening and crushing system thereof. The screening and crushing system comprises a dry sand elevator, a vibrating screen, at least two storing bins, valves, feeding pipes, a crushing machine and a material returning pipe, wherein the vibrating screen is used for receiving sand output from the dry sand elevator; the at least two storing bins are used for storing sand output from the vibrating screen, a first storing bin of the at least two storing bins is used for storing fine sand, and second storing bins of the at least two storing bins are used for storing sand the grain diameter of which is greater than that of the fine sand; the upper ends of the feeding pipes are connected with the second storing bins and are also provided with the valves, and the lower ends of the feeding pipes are connected with a feed hole of the crushing machine; the upper end of the material returning pipe is connected with a discharge hole of the crushing machine, and the lower end of the material returning pipe is in butt joint with a feed hole of the dry sand elevator. The screening and crushing system provided by the invention is capable of fully utilizing the sand the grain diameter of which is greater than that of the fine sand, and a problem that a large number of waste materials are wasted or / and medium-coarse sand is likely to overfill a bin is avoided.

Description

technical field [0001] The invention relates to the field of mixing stations, in particular to a dry-mixed mortar mixing station and a screening and crushing system thereof. Background technique [0002] Dry-mixed mortar mixing plants often use wet sand as raw material, which is used after drying and screening. At present, the commonly used screening systems in dry-mixed mortar mixing plants are as follows: figure 1 As shown, it mainly includes: a drying system 1', a primary vibrating screen 2', a dry sand elevator 3', a grading vibrating screen 4', and a grading sand storage bin 5'. After the wet sand is dried in the drying system 1', it passes through the primary vibrating screen 2' to remove waste, and then the dry sand passes through the dry sand elevator 3' and then enters the grading vibrating screen 4' to be screened into fine sand, medium sand, and coarse sand. The sand material of these three grades is respectively stored in the graded sand storage bin 5', figure...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a dry-mixed mortar mixing station and its screening and crushing system to make full use of the sand material with a particle size larger than fine sand, so as to avoid the problem that a large amount of waste is wasted or / and medium-coarse sand is easy to explode

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