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一、概况长期以来我们的下水道养护疏通工作,一直沿用着传统的人工掏挖、绞车绞泥等落后的操作。劳动强度大,卫生条件差且不安全。1977年我处自制的装有消防中置泵的低压清洗车,效率不高。国外工业发达的国家,多采用装有柱塞式水泵的高压清洗车效果较好。1979年我处进口的一台斯柯达高压清洗车价值18万余元(全国共进口20台)。这种车车身长,小胡同还进不去。
I. Overview For a long time, our sewer maintenance and dredging operations have been followed by the traditional operation of manual picking, winch, and mud sticking. Labor intensity, poor sanitary conditions and insecurity. In 1977, our self-made low-pressure cleaning vehicle equipped with a fire pump was not efficient. In industrially developed countries abroad, high-pressure cleaning vehicles equipped with plunger-type water pumps are more effective. In 1979, a Skoda high-pressure cleaning vehicle imported by our office was worth more than 180,000 yuan (a total of 20 imported machines across the country). This kind of car has a long body and can’t get into small hutongs.