Method of gravity self-pressurization anti-segregation pumping high sand rate ready-mixed mortar

Abstract

A method for pumping high-sand-rate premixed mortar in a gravity self-pressure separation prevention mode comprises the steps that a mortar suction valve is arranged below a mortar suction hopper; mortar materials from the mortar suction hopper enter a cylinder tube of a conveying cylinder through the mortar suction valve under the mutual action of the gravity self-pressure and the suction force of a piston; the mortar materials in the cylinder tube are smoothly discharged through a mortar outlet valve in the mortar material flowing line direction, wherein the mortar outlet valve and the conveying cylinder are in the same direction, the discharging direction of the mortar materials is straight, and the flow direction is basically not changed. According to the method, the mortar suction valve is arranged below the mortar suction hopper, the mortar can be directly sucked from the bottom of the hopper, the mortar materials enter the cylinder tube under the double action of the gravity self-pressure and the suction force of the piston, the mortar suction resistance is greatly reduced, separation is not likely to happen in the mortar suction-in process, the mortal materials which are low in fluidity or include large aggregates can be sucked in, and the mortar suction capability is greatly improved.

Description

technical field [0001] The invention relates to a method for pumping ready-mixed mortar with high sand ratio by gravity self-pressure anti-segregation pumping. Background technique [0002] In recent years, with the gradual popularization and application of ready-mixed mortar, more and more construction units have begun to use the pumping process to transport construction mortar, but frequently encounter the problem of pump head blockage or pipe plugging, which seriously affects the quality of ready-mixed mortar. Universal application. The main reason is that the ready-mixed mortar has a relatively high sand content and is prone to segregation. However, when using traditional pumping equipment, usually the mortar needs to be sucked up from the bottom of the valve using vacuum negative pressure, which further leads to the failure of the ready-mixed mortar. Segregation, and when the mortar is discharged, its flow direction turns sharply at the pump head, resulting in turbulen...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the gradual popularization and application of ready-mixed mortar, more and more construction units have begun to use the pumping process to transport construction mortar, but frequently encounter the problem of pump head blockage or pipe plugging, which seriously affects the quality of ready-mixed mortar. Universal application

The main reason is that the ready-mixed mortar has a relatively high sand content and is prone to segregation. However, when using traditional pumping equipment, usually the mortar needs to be sucked up from the bottom of the valve using vacuum negative pressure, which further leads to the failure of the ready-mixed mortar. Segregation, and when the mortar is discharged, its flow direction turns sharply at the pump head, resulting in turbulent flow, great resistance and aggregate accumulation, which is easy to form blockage

Secondly, the conventional process often uses dilute cement slurry when lubricating pipelines, and even some units use clean water, while the dry-mixed mortar has a high sand content, which can easily lead to serious segregation of the mortar, resulting in pipe plugging

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