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分格转子定量喂煤装置下料管和助流系统
来 源:www.gtzdh.com.cn     发布时间:2018-3-8 10:32:28


下料管 :

下料管是煤粉仓和本体的非标连接件,采用耐磨板或不锈钢板焊制,在本体气动闸板上方扩大形成膨胀仓,并在膨胀仓上接收尘管。下料管的设计好坏直接关系到喂煤系统的稳定。


分格转子定量喂煤装置下料管和助流系统

下料管采用DN500无缝管制作成Y型管形式,同样在管壁设置两个负压抽吸喷吹装置。喷吹时间、喷吹间隔时间根据现场使用情况设定,喷吹气流为0.2~0.4Mpa干燥无油压缩空气。Y形管一叉管连接至收尘器。

充分保证管内处于200~500Pa的负压状态。同时,在管分叉上方设置检修门。该系统长时间运行时,由于少量煤粉自燃或者结垢会附着在管壁时,从而影响下料通畅。检修人员可以通过该检修窗清理里面的焦垢从而保证下料通畅。下料管与煤粉仓、本体橡胶膨胀节采用标准凸面法兰连接。




助流系统 :

要保证定量喂煤装置供煤的稳定和连续,煤粉仓的下料必须流畅,阻碍仓内煤粉正常卸出的粉体拱主要是静态拱。我们采用先进的负压抽吸喷吹技术,保证煤粉下料流畅。

分格转子定量喂煤装置下料管和助流系统

先用干燥压缩空气向仓内喷吹,可以起到破拱作用。但是,煤粉仓喷嘴吹入的空气不能及时有效地排出,会造成和加剧在煤粉仓到下料管内正压空气的积聚,形成气栓。此气体在压力尚不及冲破料层压力时便在底部聚集,只有当压力大于一定程度或在受到外力作用时才冲破料层压力得到排放,

煤粉才得以顺利下落,从而形成周期性的间歇下料,这就不能保证煤粉能以恒定的流量输出。为此,我们采取一定的工艺,通过程序控制各接口通断,将煤粉仓内的正压气体抽出,消除了起拱条件,保证下料流畅平稳。


Blanking tube
A feeding tube is non standard coal warehouse and ontology connecting pieces, with wear-resistant plate or stainless steel plate welding system, the aerodynamic gate above expanded form expansion positions, and in the expansion chamber dust receiving tube. The design of the feed pipe is directly related to the stability of the coal feeding system.
The feeding tube is made of DN500 seamless tube into Y tube form, and two negative pressure suction injection devices are set in the tube wall. The injection time and interval time are set according to the field use, and the jet flow is 0.2 ~ 0.4Mpa to dry the oil free compressed air. Y tube of a tube connected to the dust collector.
Fully guarantee the negative pressure of 200~500Pa in the tube. At the same time, the overhaul door is set above the fork of the pipe. When the system is running for a long time, a small amount of pulverized coal is spontaneous or fouling will be attached to the wall of the tube, thus affecting the unobstructed material. The overhauler can clean the fouling through the window to ensure that the material is unobstructed. The feed pipe is connected with a pulverized coal silo and the rubber expansion joint of the body by using a standard convex flange.


Flow aid system
To ensure the stability and continuity of the coal supply in the ration feed plant, the feeding of the coal bin must be smooth, and the powder arch that hinders the normal discharging of the pulverized coal in the bin is mainly a static arch. We use advanced negative pressure suction injection technology to ensure the fluency of the pulverized coal.
First, the dry compressed air is sprayed to the silo, which can play the role of breaking the arch. However, the air blown by the nozzle of the pulverized coal bin can not be discharged in time and effectively, which will cause and aggravate the accumulation of positive pressure air in the pulverized coal bin and the down pipe, and form gas embolism. When the pressure is not enough to break through the pressure of the material layer, the gas will aggregate at the bottom. Only when the pressure is greater than a certain extent or under external force, can it break through the material pressure and get rid of it.
The pulverized coal will fall smoothly, thus forming periodic intermittent blanking, which does not guarantee that the pulverized coal can be output at a constant flow rate. For this reason, we take a certain process to control the connection of each interface by program control, and extract positive pressure gas in the coal silo, eliminating the condition of arch, and ensuring smooth and smooth feeding.


合肥固泰自动化是专业从事:皮带秤煤粉秤转子秤粉体秤焦粉秤入窑生料秤的生产和销售。

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