Device suitable for intermittent mixing and adding of liquid additive and method

Abstract

A device suitable for intermittent mixing and adding of a liquid additive comprises a liquid storage barrel, a compressed air tank, a weighing air pressure adding tank, a weighing mixer and a material stock bin. The liquid storage barrel and the compressed air tank communicate with the weighing air pressure adding tank through pipelines. The weighing air pressure adding tank communicates with the weighing mixer through a pipeline. The material stock bin also communicates with the weighing mixer through a pipeline. A first electromagnetic valve is arranged on the pipeline between the liquid storage barrel and the weighing air pressure adding tank. A second electromagnetic valve is arranged on the pipeline between the compressed air tank and the weighing air pressure adding tank. A third electromagnetic valve is arranged on the pipeline between the weighing air pressure adding tank and the weighing mixer. A fourth electromagnetic valve is arranged on the pipeline between the material stock bin and the weighing mixer. The invention further comprises a using method of the device. According to the device suitable for intermittent mixing and adding of the liquid additive and the using method of the device, the intermittent mixing and adding problem of the liquid additive can be effectively solved; the liquid additive cannot be left over in the conveying pipelines; automatic adding can be achieved; labor is not needed; and in addition, metering and proportioning are accurate.

Description

technical field [0001] The invention relates to an intermittent mixing and adding device and method, in particular to an intermittent mixing and adding liquid additive device and method. Background technique [0002] Batch mixing means that a certain amount of materials and additives enter the mixer, and after a certain period of time, they are discharged from the mixer. This is to complete a mixing batch, and then feed into the mixer again to mix and discharge. Repeatedly, the materials and additives are intermittent. In and out of the mixer. [0003] CN105064174A discloses an intermittent forced asphalt mixture metering method. The aggregate weighing adopts a secondary weighing combined with an impulse correction method. The secondary weighing includes the first rough weighing and the second fine weighing, and the material is discharged during rough weighing. The door of the bin is fully opened, and when the weighing reaches 80% of the set value, the door is opened halfwa...

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Problems solved by technology

[0003] CN105064174A discloses an intermittent forced asphalt mixture metering method. The aggregate weighing adopts a secondary weighing combined with an impulse correction method. The secondary weighing includes the first rough weighing and the second fine weighing, and the material is discharged during rough weighing. The door of the bin is fully opened, and when the weighing reaches 80% of the set value, the door is opened halfway. The bin door is closed; the ore powder is weighed once, and the bin door is fully opened during weighing. When the feed reaches the set value minus the drop compensation value, the bin door is closed; the asphalt is weighed once. Combined with the method of impulse correction, adjust the impulse correction value of asphalt according to the difference between the total amount of all aggregates and the actual input weight. When the asphalt feed reaches the set value minus the drop compensation value plus the asphalt impulse correction value , turn off the asphalt pump, although the invention discloses a batch mixing adding and metering method, but the asphalt pump is used to add asphalt as a liquid additive in the batch mixing process of the invention, which is easy to cause the liquid additive to be in the delivery pipeline The residue is not only a waste, but also affects the next addition, and the automatic addition cannot be fully realized, it needs manual assistance to complete, and the weighing devices are all set above the mixer, which will also increase the number of bins. It will increase the floor area and increase the production cost

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