Weighing device for mortar car powder material and its method

Abstract

The present invention discloses a mortar carriage powder material weighing and metering equipment and method. Said equipment adopts two-stage obliquely-arranged first-stage spiral conveyor and second-stage spiral conveyor, on the feeding part of second-stage spiral conveyor a powder material hopper for receiving and temporarily storing dried powder is set, on the powder material hopper and discharging part are set front and rear hanger rod components which are respectively equipped with sensor, in the described front and rear hanger rod components the position connected with weighing sensor and the position connected with second-stage spiral conveyor are respectively equipped with vibration absorptive block for making vibration absorption, and said weighing sensor is electrically connected with upper-position machine. Said invention also provides its working principle and its concrete operation method.

Description

technical field [0001] The invention belongs to the mortar mixing technology for high-speed railway (highway) road construction, and in particular relates to a weighing and metering device and method for mortar truck powder. Background technique [0002] During the construction of high-speed railway (road) roads, a special asphalt cement mortar (also known as CA mortar or BZM mortar) must be mixed, and the main component of the mortar is dry powder, and the composition ratio requirements are high. The dry powder of the ordinary mixing station is directly measured by controlling the conveying time of the screw machine; the dry powder of the foreign mortar truck is carried out through the dry material metering hopper placed on the conveying screw machine and the metering scale set on the dry hopper. The material is weighed by the electronic calculation method of adding metering. The screw conveyor conveying and metering method of dry powder in ordinary mixing stations and the...

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Problems solved by technology

The screw conveyor conveying and metering method of dry powder in ordinary mixing stations and the computerized method of adding dry powder to imported dry powder in foreign mortar trucks have the common problem of inaccurate measurement caused by inertial blanking and air blanking. They can only adopt Compensate by closing the butterfly valve in advance with an impossibly accurate advance amount; moreover, the compensation method is also affected by factors such as the closing speed of the butterfly valve and the flow rate and density of the material; in addition, the computerized method of powder metering still exists in the screw machine There are defects of residual materials in the conveying cylinder; defects such as these all cause inaccurate conveying and metering of dry powder materials, and it is difficult to meet the quality requirements of special mortar for high-speed railway (highway) road construction

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