Highly wear-resisting alloy steel rubber outer protection shockproof energy saving pump tube

Abstract

The invention discloses a high wear-resistance alloy steel rubber outer shield shakeproof energy-saving pump pipe, comprising an alloy steel pipe (1) and a rubber outer shield (2). The pump pipe is characterized in that: the alloy steel pipe (1) is a No. 45 seamless manganese steel pipe; the wall of the steel pipe forms two layers with different hardness through heat treatment; an inner wall layer (11) forms a high-hardness wear-resistant layer with the thickness of N millimeters and the Rockwell hardness between 58 and 65 degrees through a high frequency quenching and tempering process; an outer wall layer (12) is a high-toughness anti-bending layer preserving the original Rockwell hardness (22 degrees); the rubber outer shield (2) is a vibration reducing rubber layer with the thickness of N millimeters, which adheres to the outer wall of the alloy steel pipe through a rubber-covering and vulcanizing process. The pump pipe overcomes the deficiencies that concrete pump pipes in the prior art are fast to wear, short in using period, serious in pipe vibration, high in frictional resistance, high in energy consumption, low in transport capability, etc., and achieves the aims of prolonging the using period of the concrete pump pipes, improving concrete transport capability, preventing vibration, saving energy, reducing noise, saving pipes and reducing comprehensive operation cost.

Description

technical field [0001] The invention relates to a fluid medium delivery pipeline, in particular to a highly wear-resistant alloy steel rubber outer protection shockproof and energy-saving pump tube used in concrete pump delivery of concrete. Background technique [0002] Concrete pump delivery pipes in the prior art, that is, pump pipes, are made of high-toughness seamless steel pipes. Due to their low hardness, there are large frictional resistances on the inner walls of the pipes during use and fast wear and tear. The overall cost is high. In addition, when the load is working, the turbulent flow (turbulent flow) generated by the fast-flowing concrete in the pipe will cause the pump pipe to vibrate strongly (resonance), that is, pipe vibration, and the relationship between pipe vibration and frictional resistance and flow rate increases nonlinearly; In addition to causing noise hazards to the construction environment, pipe vibration also has a great mechanical damage to t...

AI Technical Summary

Problems solved by technology

[0002] Concrete pump delivery pipes in the prior art, that is, pump pipes, are made of high-toughness seamless steel pipes. Due to their low hardness, there are large frictional resistances on the inner walls of the pipes and rapid wear and tear during use. Frequent replacement of damaged pump pipes is required to ensure smooth operation. Comprehensive cost is high

In addition, when the load is working, the turbulent flow (turbulent flow) generated by the fast-flowing concrete in the pipe will cause the pump pipe to vibrate strongly (resonance), that is, pipe vibration, and the relationship between pipe vibration and frictional resistance and flow rate increases nonlinearly; In addition to causing noise hazards to the construction environment, pipe vibration also has a great mechanical damage to the pump pipe (this is why the pump pipe is made of high toughness instead of high hard and brittle materials). Greatly consumes the energy to propel the concrete and restricts the delivery capacity of the pump pipe

[0003] To sum up, the concrete pump pipes in the prior art have the disadvantages of fast wear, short service life, serious pipe vibration, large frictional resistance, large energy consumption, and low conveying capacity.

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