德聂伯彼特罗夫斯克铁路运输工程学院研制出一种便携式列车清洗设备(图1)。它由泡沫清洗液制备器和废液收集器两部分组成。在背袋中有一个10～15L盛泡沫清洗液的储液罐,2～4个小压缩空气瓶。当压缩空气进入混合器后,由于气流的喷射作用,泡沫清洗液从储液罐内吸出与压缩空气混合进入发泡器,经激化产生大量泡沫,然后喷到被洗的客车表面上。这种泡沫清洗液含水20％～30％,喷到被洗表面后能自然地缓慢下流,洗去污垢。用来制备泡沫清洗液的设 Dnepropetrovsk Railway Engineering Institute developed a portable train washing equipment (Figure 1). It consists of foam cleaning fluid preparation and waste collector in two parts. In the back pocket there is a 10 ~ 15L Sheng foam cleaning fluid storage tank, 2 to 4 small compressed air bottles. After the compressed air enters the mixer, the foam cleaning liquid is sucked out of the liquid tank and mixed with the compressed air to enter the foam generator, which generates a large amount of foam after being sprayed onto the surface of the washed passenger car due to the jet effect of the air flow. This foam cleaning solution containing 20% ​​to 30% water, after being sprayed on the surface to be washed naturally slow down, wash away the dirt. Equipment used to prepare foam cleaning fluid