Adding device for aggregates in asphalt mixture

Abstract

The invention discloses an adding device for aggregates in an asphalt mixture. The device comprises a rack, a bin is arranged in the rack, a metering barrel is arranged below the bin, the metering barrel is arranged on a plurality of weighing sensors, a discharge valve is arranged on a discharge port of the bin, a metering valve is arranged at a feed port of the metering barrel, a connecting plateis arranged in the metering barrel, the connecting plate is connected with the metering valve, the metering valve comprises a sieve plate, the sieve plate is fixedly connected with a first air cylinder, a pushing shaft of the first air cylinder is connected with a valve plate, a discharging opening of the metering barrel is connected with a discharging pipe, the discharging pipe is connected withan air outlet pipe of the draught fan, and a wind power control valve is arranged on the air outlet pipe. The device has the advantages of being high in metering precision, high in automation degree,low in failure rate, capable of reducing environmental pollution and the like, can be in butt joint with an asphalt mixing plant, is stable and reliable in use condition, and can save a large amountof labor force.

Description

technical field [0001] The invention mainly relates to the technical field of asphalt production, in particular to a device for adding granular materials in asphalt mixture, which is suitable for the production of asphalt mixture additives such as granular wood fiber, anti-rutting agent, warm mix agent, and asphalt modifier. delivery. Background technique [0002] At present, the feeder for production is composed of a silo, a screw metering barrel, and a blowing device. The working principle is that the material in the silo is added to the metering hopper by the screw conveyor. When the set weight is reached, the screw conveyor stops. Work, the feed control valve on the metering barrel is closed, the wind control valve is opened, and the metering barrel enters the waiting period for delivery. When the mixing tank needs to add materials, the control system sends a control signal, the fan starts, and the materials are sent into the mixing tank along the plastic flexible pipe....

AI Technical Summary

Problems solved by technology

The disadvantages of this pellet batching device are that there are many equipment parts, the system is relatively complicated, and the price is relatively expensive; because the pellets are conveyed by pneumatic force, the storage bin needs to be equipped with vent holes, and the environmental pollution is relatively serious; the metering hopper is close to the mixing cylinder, and the metering Accuracy is susceptible to

[0004] Through the investigation and research on domestic pellet adding devices, there are generally disadvantages such as high equipment failure rate, low measurement accuracy, poor safety, few man-machine dialogue functions, and relatively expensive prices.

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