The utility model relates to a bag dust collector, which comprises a box body, a filter unit, a guide plate and a injection unit; a plurality of ash hoppers are arranged at the bottom of the box body, and a control valve is arranged at the bottom outlet of the ash hopper; a guide plate is arranged at the rear side of the air inlet of the box body; a filter unit comprises an array of filter bags arranged in the box body, which are divided into several groups, each group is provided with a plurality of filter bags, which are located at the back side of the guide plate and above the ash hopper; The ratio of length to diameter is 175:4; the injection unit includes an air compressor, an air main pipe and a nozzle; the air outlet of an air compressor is connected to an air main pipe, which is connected to a plurality of nozzles respectively arranged above each group of filter bags; and a large-caliber electromagnetic pulse valve is connected between the nozzle and the air main pipe to control the operation of the nozzle, with a plurality of solenoid pulse valves at the bottom of each nozzle for use. The nozzles of each filter bag should be flushed separately. Appropriate length-diameter ratio of filter bags was adopted to reduce the flow velocity at the outlet of filter bags and to minimize the resistance. Spraying method was adopted to enhance the ash removal capacity without damaging the filter bags.
【技术实现步骤摘要】
一种袋式除尘器
本技术涉及除尘器设备,特别涉及一种袋式除尘器。
技术介绍
袋式除尘器是一种干式滤尘装置。它适用于捕集细小、干燥、非纤维性粉尘。滤袋采用纺织的滤布或非纺织的毡制成,利用纤维织物的过滤作用对含尘气体进行过滤,当含尘气体进入袋式除尘器后,颗粒大、比重大的粉尘,由于重力的作用沉降下来,落入灰斗,含有较细小粉尘的气体在通过滤料时,粉尘被阻留,使气体得到净化。滤料使用一段时间后,由于筛滤、碰撞、滞留、扩散、静电等效应,滤袋表面积聚了一层粉尘,这层粉尘称为初层,在此以后的运动过程中,初层成了滤料的主要过滤层,依靠初层的作用,网孔较大的滤料也能获得较高的过滤效率。随着粉尘在滤料表面的积聚,除尘器的效率和阻力都相应的增加,当滤料两侧的压力差很大时,会把有些已附着在滤料上的细小尘粒挤压过去,使除尘器效率下降。另外,除尘器的阻力过高会使除尘系统的风量显著下降。因此,除尘器的阻力达到一定数值后,要及时清灰。清灰时不能破坏初层,以免效率下降。但是,目前的分室反吹袋式除尘器存在清灰能力不足、喷吹与过滤同时进行的缺点。可见,现有技术还有待改进和提高。
技术实现思路
鉴于上述现有技术的不 ...
【技术保护点】
1.一种袋式除尘器,其特征在于,包括底部带支架的箱体、过滤单元、导流板、喷吹单元;所述箱体的底部设置有多个灰斗,所述灰斗底部出口设有控制阀;所述导流板设置在箱体的进风口后侧;所述过滤单元包括阵列布置的滤袋,所述滤袋设于箱体内,分成若干组,每组设有多个滤袋,并位于导流板后侧、灰斗上方;所述滤袋的长径比为175:4;所述喷吹单元包括空气压缩机、空气总管、喷吹管;所述空气压缩机的出气口连通于空气总管,空气总管连通于多根分别对应设于每组滤袋上方的喷吹管;所述喷吹管与空气总管之间连接有用于控制喷吹管工作的大口径电磁脉冲阀,每根喷吹管底部设有多个用于分别对应冲洗每个滤袋的喷嘴。
【技术特征摘要】
1.一种袋式除尘器,其特征在于,包括底部带支架的箱体、过滤单元、导流板、喷吹单元;所述箱体的底部设置有多个灰斗,所述灰斗底部出口设有控制阀;所述导流板设置在箱体的进风口后侧;所述过滤单元包括阵列布置的滤袋,所述滤袋设于箱体内,分成若干组,每组设有多个滤袋,并位于导流板后侧、灰斗上方;所述滤袋的长径比为175:4;所述喷吹单元包括空气压缩机、空气总管、喷吹管;所述空气压缩机的出气口连通于空气总管,空气总管连通于多根分别对应设于每组滤袋上方的喷吹管;所述喷吹管与空气总管之间连接有用于控制喷吹管工作的大口径电磁脉冲阀,...
【专利技术属性】
技术研发人员:万杏波,曾芳,
申请(专利权)人:佛山华清智业环保科技有限公司,
类型:新型
国别省市:广东,44
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