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How to design delivery pipe lines for concrete pump

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How to design delivery pipe lines for concrete pump

Issue Time:2020-04-03
First of all, the conveying pipe of the concrete conveying pump needs to be piped according to the characteristics of the project and the construction site and the concrete pouring scheme. Minimize the use of bends and hoses. The laying of the conveying pipe should follow safe construction, which is convenient for cleaning the pipeline, troubleshooting and repair in principle.

Secondly, if both old and new pipelines need to be used in the same line at the same time, the new pipeline needs to be arranged in a place with a higher pumping pressure, and the old pipe can be placed in a place with a lower pumping pressure. The pipeline should be arranged horizontally and vertically, and draw a simple diagram, list the specifications and quantities of various pipe fittings, pipe connection rings, elbows, etc., and propose a spare parts list.

The concrete conveying pump needs to be selected according to the large diameter of the coarse aggregate, the concrete pump model, the conveying distance of the concrete output, and the difficulty of conveying. The joints of the conveying pipe should be tight, have sufficient strength, and can be quickly assembled and disassembled.
trailer concrete pump
If you need to piping vertically upward, the length of the ground horizontal pipe should not be less than a quarter of the length of the vertical pipe, and it should not be less than 15m. The root of the conveying pipe should be set at the 3 ~ 6m of the Y-pipe outlet of the concrete pump. Valve to prevent backflow of concrete mix.

Concrete conveying pipes cannot be directly supported on steel bars, formwork and embedded parts. Horizontal pipes should be fixed at intervals with brackets, table mats, slings, etc., in order to eliminate pipe blocking, assembling, disassembling, and cleaning pipes. If a bent pipe is to be set at the lower end of a vertical pipe, it should not be used as a support point for the upper pipe. Set up a steel support for vertical weight.
concrete pump
In summer, the hot weather should cover the concrete pipe with damp cloth, warm grass bags, etc. to avoid sunlight; in colder places in winter, the concrete pipe should be wrapped with thermal insulation material to prevent frost cracking.

When the horizontal conveying distance is more than 200m, the vertical conveying distance is more than 40m, and the conveying pipe is vertically downward or the horizontal pipe is arranged in front of the inclined pipe.} When the cement amount per unit of Kunming clay mixture is less than 300kg / m3, the piping method and pumping must be reasonably selected For craftsmanship, large diameter concrete conveying pipes and long conical pipes should be used, and fewer elbows and hoses should be used. When the conveying height exceeds the large conveying distance of the concrete pump, the relay pump (subsequent pump) can be used for pumping.

In addition, the distribution equipment should be selected according to the engineering structure characteristics, construction technology, distribution requirements, and piping conditions. The distribution equipment should be arranged according to the structural plane size, piping conditions and the length of the distribution rod, and it should be able to cover the entire structural plane and be able to distribute the material uniformly and quickly. The distribution equipment should be installed firmly and stably.
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