Additive metering device for mixing mortar for construction

Abstract

The invention discloses a measuring device for admixtures in mixing mortar for construction. A measuring vessel is supported or hung by a support or a hanging device provided with a weighing sensor; the admixture outlet is arranged at the bottom of the measuring vessel. Preferably, the bottom of the measuring vessel is also provided with an admixture inlet. Preferably, an admixture inlet is connected with a pipeline equipped with a delivery pump, and the admixture is sucked into the measuring vessel along the pipeline through the delivery pump. Preferably, the delivery pump is driven by a variable speed motor. A weighing device is arranged on the measuring vessel. By the device in the invention, the measuring of admixtures is achieved through checking the weight of the vessel, temperaturedifference can be avoided and no observation error caused by vibration will occur.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a metering device for an admixture for mixing construction mortar. Background technique [0002] Mortar is mixed during construction. All kinds of mortars include several components, and there are certain proportioning relationships between these components, which must be followed during the mixing process, otherwise the mixed mortar will not meet the construction requirements. Especially in the process of building high-speed railways or highways, it is necessary to mix a special asphalt cement mortar, and the ratio between the various components is more stringent, especially in this kind of mortar except for the main components. In addition, a small dose of liquid admixture is also added. Since the amount of these admixtures added is small, a slight measurement error will cause a large change in the properties of the mortar. Therefore, more accurate measurement o...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned volume measurement method can basically meet the small-dose admixture measurement problem in mortar mixing, there is still a certain distance between the measurement accuracy of the above-mentioned method and the required accuracy.

First of all, due to different temperatures, the same dose of admixture will have different volumes due to thermal expansion and contraction, which will cause temperature errors

In addition, because the measurement is generally in the on-site working environment, the measurement container is often in a state of vibration, and it is difficult for the observer to observe accurately, which will cause observation errors

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