A mine-used wet shotcrete double-piston pump pumping pipeline transmission slowing pulse device

Abstract

The invention discloses a wet-spraying concrete double plunger pump pumping pipe conveying slowdown pulse device for a mine. The device includes an upper pipe and a lower pipe, a box body is distributed between the upper pipe and the lower pipe, and the upper pipe is communicated with the lower pipe through the box body; rotating blades are distributed in the box body and provided with coil springs and include the upper rotating blades and the lower rotating blades. When concrete is normally conveyed between the upper and lower pipes, the S-shaped rotating blades are distributed in the conveying direction of the concrete under the action of the coil springs, and since the rotating blades are distributed in a streamline shape, normal conveying of the concrete is ensured. When there is no pumping pressure, the rotating blades suddenly rotate clockwise under the action of the coil springs or a driving motor, and fluids which are positioned at the upper portions of the rotating blades anddo not flow away in time are flipped to the lower pipe immediately under the action of the upper rotating blades to alleviate the phenomenon that materials are not supplied by pulses continuously.

Description

technical field [0001] The invention relates to the technical field of conveying trunk lines in mine and tunnel support construction, in particular to a mine-used wet shotcrete double-plunger pump pumping pipeline transmission pulse slowing device. Background technique [0002] In the support construction of mines and tunnels, pumping concrete technology has been widely used. With the development of concrete pump transportation technology, pumping concrete can achieve long-distance and large height difference transportation. [0003] The anchor shotcrete support in coal mine excavation is an important process of coal mine production and construction. With the dry spraying process being banned, the wet shotcrete process has become the most common anchor shotcrete operation process in coal mines. Since the transportation of wet shotcrete is often carried by double-plunger pumping, in the process of pipeline transportation, especially in the process of long-distance transportat...

AI Technical Summary

Problems solved by technology

Since the transportation of wet shotcrete is often carried by double-plunger pumping, in the process of pipeline transportation, especially in the process of long-distance transportation, there is a common problem of serious pulse phenomenon, which can easily cause pipe blockage, damage equipment, and even affect construction quality in severe cases.

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