Suction pipe, suction structure and motor sweeper: Fid-Bau Portal

Suction pipe, suction structure and motor sweeper

LI JIANWEI / CHEN JIANSHE / GUO HAILE

The invention discloses a suction pipe, a suction structure and a motor sweeper. The suction pipe comprises a suction section, a transition section and a discharge section which are sequentially communicated in the suction direction of the suction pipe. The inner diameter of the suction section is gradually reduced in the direction from the air inlet end to the air outlet end of the suction section. The inner diameter of the discharge section is gradually expanded from the gas inlet end to the gas outlet end; and the inner diameter of the transition section is consistent with or basically consistent with the air outlet end of the suction section and the air inlet end of the discharge section. According to the suction pipe, through the suction-in section which is arranged in a gradually-shrinking mode and the discharge section which is arranged in a gradually-expanding mode, the expansion loss degree of airflow at the outlet of the suction pipe is reduced, on the premise that the suction effect is met, a pneumatic conveying system communicated with the suction pipe has small system resistance, namely suction resistance, and on the premise that the same suction effect is achieved, the suction efficiency is improved. The fan pressure required by the air system conveying system is smaller, the fan power is smaller, the generated noise is smaller, the operation duration is longer, and the suction effect is improved.

本发明公开了一种抽吸管、抽吸结构及清扫车，该抽吸管包括沿其抽吸方向依次连通的吸进段、过渡段和排出段；吸进段的内径自其进气端至其出气端的方向呈渐缩设置；排出段的内径自其进气端至其出气端的方向呈渐扩设置；过渡段等径设置，且其内径与吸进段的出气端及排出段的进气端一致或基本一致。本发明通过呈渐缩设置的吸进段，和呈渐扩设置的排出段，降低了抽吸管出口气流的膨胀损失程度，在满足抽吸效果的前提下，使与抽吸管连通的气力输送系统具有较小的系统阻力即抽吸阻力，在达到同样抽吸效果的前提下，气系统输送系统所需要的风机压力更小、风机功率更小，产生的噪声更小，且具有较长的作业时长，提高了抽吸效果。

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