四吨以下卧式快装锅炉的排污装置,结构上存在一些问题:一、采用三回程水火管混合结构,体积小,结构复杂,沉积物在锅炉内分布不均;二排污管与锅筒通向排污联箱的位置是相对称的,排污时锅筒内的水流直冲到排污管,而水冷壁下联箱管径小,与排污管距离远,流向排污管的阻力比较大;三. There are some problems in the structure of the sewage disposal device below four tons of horizontal quick-loading boilers: First, the three-return water and fire tube hybrid structure is adopted, which has the advantages of small volume, complex structure and uneven distribution of sediment in the boiler; The location of the sewage connection to the box is relatively symmetrical, sewage pipe when the water flow straight to the sewage pipe, and water wall under the box diameter is small, with the sewage pipe away from the larger, the resistance to the discharge pipe is relatively large;