Full-automatic batching and mixing control system adopting method of sand enveloped with cement

Abstract

The invention discloses a full-automatic batching and mixing control system adopting a method of sand enveloped with cement. The full-automatic batching and mixing control system comprises a PLC, a moisture testing sensor and an information memory, wherein the moisture testing sensor is fixedly mounted in the inner chamber of a mixing tank; and mixing blades are also mounted in the inner chamber of the mixing tank. The method of sand enveloped with cement comprises the following steps: (3) adopting a repeated feeding method, stopping feeding after 90-95% of a material is fed into a scale, and then performing intermittent inching feeding till the required weight is reached; (4) feeding batched sandstone into the mixing tank, adding a proper amount of water, and controlling the water adding precision through the moisture testing sensor; (7) uniformly mixing, then performing moisture testing, and conducting intermittent inching water replenishing; and (8) discharging 30-50% of the material in a mixer when the material exists in an end product hopper, and stopping working. The full-automatic batching and mixing control system adopting the method of sand enveloped with cement adopts intermittent inching feeding and avoids errors caused by once feeding, the sandstone enters the mixer, a proper amount of water is added, then cement is fed, the product strength is improved, and the water adding precision is improved since the moisture sensor is arranged.

Description

technical field [0001] The invention relates to the technical field of batching and mixing, in particular to a fully automatic batching and mixing control system for cement-wrapped sand method. Background technique [0002] Most of the batching systems of cement product enterprises (commercial mixes, concrete components, colored pavement bricks, building blocks, etc.) are traditional and backward batching and mixing processes, and the degree of automation is not high. [0003] Most mixers are still being stirred by people, water is added manually, and materials are discharged manually. Factories of colored pavement bricks and building blocks still use eyes and hands to judge the degree of dryness and wetness of materials, and they cannot meet the high standards for humidity. ; [0004] Not only is there a lot of dust and the environment is harsh, but also the consistency of the length of mixing time and the consistency of the dryness and wetness of the finished material are...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a fully automatic batching and mixing control system for cement-wrapped sand method to solve the above-mentioned problems in the background technology: judging the degree of dryness and wetness of materials by eyes and feel, large dust, harsh environment, and the length of mixing time. The consistency and the dry-wet consistency of the finished material are not good, the precision of the ingredients is not high, and the quality of the product is different, which affects the qualified rate of the finished product. Secondary cutting, secondary water addition, manual control is more complicated, and it is not easy to achieve. question

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