Device for downward conveying concrete

Abstract

The invention discloses a for downward conveying concrete, comprising a pump truck arranged on a high-level terrace, wherein a pump opening of the pump truck is connected with a pumping pipe which extends vertically and downwards; the pumping pipe is provided with a detoured bent pipe; an inlet end and an outlet end of the detoured bent pipe are coaxially arranged on the pumping pipe; the detoured bent pipe extends toward the lateral direction of the pumping pipe; and the detoured bent pipe which extends toward the lateral direction of the pumping pipe is arranged so that the previous flowing direction of the pumping pipe which extends downwards in the vertical direction is changed; and therefore, concrete is prevented from falling down without resistance along with the self weight, the concrete resistance is enhanced, and the flowing speed of the concrete in the pipe is prevented from being too fast to be separated and leaked.

Description

technical field [0001] The invention relates to a device for conveying concrete, in particular to a device for conveying concrete downward. Background technique [0002] The conventional method of pumping concrete for pile foundation filling is to use the topography from bottom to top or the terrain with small level difference, which is not easy to block the pipe, but due to the geographical conditions of the construction site, the distance between some pile foundations and the pump truck is high. The difference is large, and the concrete can only be transported from top to bottom. During the construction process, due to the large height difference, the long linear pump pipe and the problem of its own pumping pressure, there are great construction difficulties and quality risks. The reasons are as follows: [0003] 1. When the concrete is conveyed downward, the concrete in the conveying pipe is not easy to maintain a continuous state of movement, that is, during the pumping...

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Problems solved by technology

[0002] The conventional method of pumping concrete for pile foundation filling is to use topography from bottom to top or terrain with small level difference, which is not easy to block pipes. However, due to the geographical conditions of the construction site, the distance between some pile foundations and pump trucks is high. The difference is large, and the concrete can only be transported from top to bottom. During the construction process, due to the large height difference, the linear pump pipe is too long and the problem of its own pumping pressure, there are great construction difficulties and quality risks. The reasons are as follows:

[0003] 1. When conveying concrete downward, the concrete in the conveying pipe is not easy to maintain a continuous state of movement, that is, during the pumping process, the speed of the concrete falling by itself exceeds the pumping speed of the conveying pump, which will cause the concrete to flow by itself and form segregation, which is prone to blockage management situation;

[0004] 2. During the process of stopping the pump, the concrete will flow by itself and form an air column in the pipeline. The air column is equivalent to a section of spring. After restarting the pumping, the air column will absorb the pumping pressure, and it is easy to get stuck due to the pump not moving.

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