烟草CTD烘丝机出料罩的改造

Improvement of Discharging Hood of CTD Dryer

CTD烘丝机在使用过程中存在出料罩侧壁粘料、结露滴漏并诱发湿团及水渍烟的问题。这主要是由于原出料罩未能及时排出出口的潮气,也未对冷凝水设计导水结构所致。为此对CTD出料罩进行改造:根据附壁效应增设两重导水凸棱进行水料分离,筛网插板进行导水;改变出料罩外形为外扩喇叭状;加装斜向外侧倾斜的接水槽;设置排潮管道排气等。改造后应用效果表明,出料罩侧壁粘壁量、湿团掉落量分别降低了93.4%和98.8%,无冷凝水滴漏及潮气外溢现象,提高了产品工艺质量。

The problems that the stickiness of the side walls of discharging hood and the wet mass and waterlogging tobacco caused by the condensation leaks were widely encountered during the CTD dryer＇s use. The main reason was that the original discharging hood failed to exhaust the moisture in time and no water diversion structure was designed for the condensate water. To solve the problems, the discharging hood of CTD was improved as follows： two protruding edges were added to separate water and tobacco as well as the sieve flappers were used to divert water according to wall attachment effect; the shape of discharging hood was changed to an outward trumpet shape; additionally, a slanted toward water receiving tank was added and channels were set to exhaust moisture, etc. The results of application after improving showed that： the tobacco stuck to the side walls of discharging hood decreased by 93.4% and the dropping amount of wet mass declined by 98.8%. Moreover, there was no condensate water leakage and moisture spillover.