In a wheel mill, a scraper mounting mechanism, which prevents a scraper from being squeezed out of a scraper, includes a bracket fixed on a grinding disc. The improvement is that the bracket has two relatively extended branches, fixed the bearing sleeve at the lower end of the two outstretched arm, and assembling a rotating shaft through two bearing sleeves and fixed on the rotating shaft. With the shaft sleeve, the lower swing arm is fixed on the shaft sleeve, and the scraper plate and the counterweight block are arranged at the lower end of the swing arm, and a transfinite fracture pin is arranged between the bearing sleeve and the axle sleeve. The positive effect of the utility model is that the scraper installation mechanism consisting of a rotating shaft, a swing arm, a counterweight block and a ultra limited breaking pin is added to a large foreign body in the scraper room. When the scraper is overpressed, the scraper is freely rotated around the shaft by breaking the safety pin, and the scraper is jacked up and bypassed the foreign object. After the foreign object is passed, the scraper is reset under the action of the counterweight block so as to avoid damage to the scraper device.
【技术实现步骤摘要】
轮式磨煤机中防止杂物刮板被超限挤压的刮板安装机构
本专利技术属于机械领域,具体涉及大型用煤场所的原煤磨粉中速轮式磨煤机。
技术介绍
中速轮式磨煤机主要应用于火力发电厂,将原煤磨成煤粉,煤在开采或者装卸的过程中常混入有杂质,例如:铁块、石块、木块等,这些杂质会随原煤一起进入磨煤机。目前,大部分火力发电厂会在输煤系统中增加除铁设备,但效果不是很理想,还会有大量的形状各异的铁块进入磨煤机。进入磨煤机的铁块、石块、木块等杂质最终会被甩到刮板室,最终通过刮板将这些杂质从石子煤口排出,有些大块的、形状奇特的杂质会留在刮板室。以往的中速轮式磨煤机刮板装置是整体焊接在一起的,在碰到杂质时无法自动抬起,刮板被过度挤压,造成板体及与机体的连接构件损坏,迫使磨煤机停机检修,取出异物后更换新的刮板,检修过程中又需拆解多个部件,耗材量大、工时长,影响磨煤机的正常运行,拉高磨煤成本。
技术实现思路
本技术的目的是提供一种轮式磨煤机中防止杂物刮板被超限挤压的刮板安装机构,克服现有的磨煤机中刚性装配的刮板存在上述不足。本技术的刮板安装机构,包括固定在磨盘上的支架,所作的改进是:所述的支架有相对设置的两个下伸支臂,在两个下伸支臂的下端固定承轴套,通过两个承轴套装配一根转轴,在转轴上固定装配随轴套,在随轴套上固定下伸摆臂,在摆臂下端安装刮板及配重块,在承轴套和随轴套之间穿超限断裂销。本专利技术的积极效果是:本技术增加的由转轴、安装在转轴上的摆臂、安装在摆臂下端的配重块、穿在相对转轴转动的承轴套和固定在转轴上的随轴套之间的超限断裂销组成的刮板安装机构,在刮板室进入过大异物,刮板被超限挤压时,通过折断安 ...
【技术保护点】
1.轮式磨煤机中防止杂物刮板被超限挤压的刮板安装机构,包括固定在磨盘上的支架,其特征是:所述的支架有相对设置的两个下伸支臂,在两个下伸支臂的下端固定承轴套,通过两个承轴套装配一根转轴,在转轴上固定装配随轴套,在随轴套上固定下伸摆臂,在摆臂下端安装刮板及配重块,在承轴套和随轴套之间穿超限断裂销。
【技术特征摘要】
1.轮式磨煤机中防止杂物刮板被超限挤压的刮板安装机构,包括固定在磨盘上的支架,其特征是:所述的支架有相对设置的两个下伸支臂,在两个下伸支臂的下端固...
【专利技术属性】
技术研发人员:孙英臣,迟振刚,张喜春,孟凡荣,林树辉,袁鸿飞,张涛,李志全,潘立刻,黄国峰,韩小庆,朱宝坤,高航,张灿阳,
申请(专利权)人:中国电建集团长春发电设备有限公司,
类型:新型
国别省市:吉林,22
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