The utility model relates to a impurity separator for a pulverizing system of a thermal power plant, which belongs to the field of auxiliary equipment of a power plant. The purpose of the utility model is to design a debris separator for the pulverizing system of a power plant, which can completely separate the pulverized coal from the debris and facilitate cleaning. The utility model has an enlarged impurity separator installed between the passage of pulverized coal and impurities and the outlet of pulverized coal, two debris clearance openings are opened on the enlarged impurities separator, a door shaft is fixed along the bottom edge of the debris clearance opening, a mutually independent debris door and a lower screen are respectively installed on the door shaft, and an electric screen shaft is fixed on the inner wall of the enlarged impurities separator and an electric screen shaft is fixed on the bottom edge of the enlarged impurities separat The shaft is equipped with an electric screen, and the screen shaft is connected with the motor shaft. An upper screen is installed at the joint of the expanding impurity separator and the pulverized coal outlet. The utility model has the advantages of simple structure, convenient installation and operation, can effectively prevent impurities from entering the powder bin and the powder feeder, and can jam the powder feeder, reduce the extra workload, and affect the combustion stability and operation safety.
【技术实现步骤摘要】
火电厂制粉系统杂物分离器
本技术属于电厂辅助设备领域。
技术介绍
含有排粉机和钢球磨煤机的中储式制粉系统,利用排粉机的负压提供磨制成的煤粉的输送动力,将煤粉送至粉仓中,再通过给粉机进入炉膛。原煤中不可避免混有不可磨制的杂物,磨制出的煤粉中会有较大型杂物,进入粉仓和给粉机中,卡跳给粉机,增加工作量,且影响燃烧稳定和运行安全。目前部分电厂在磨煤机出口后安装杂物分离器过滤杂物,但存在阻拦不彻底,清理杂物操作繁琐的问题,为进一步解决该问题,就必须采用更有效的分离措施。
技术实现思路
本技术的目的是设计一个将粉煤与杂物分离彻底,并方便清理的火电厂制粉系统杂物分离器。本技术在粉煤及杂物通道与煤粉出口之间安装有扩径杂物分离器,扩径杂物分离器的外径大于粉煤及杂物通道和煤粉出口的外径;在扩径杂物分离器上开有两个杂物清理口,两个杂物清理口的位置相对,在杂物清理口底沿上固定安装有门轴,以门轴为轴分别安装有相互独立的杂物门和下层筛网,下层筛网长度与电筛轴和门轴之间距离相同,在扩径杂物分离器内壁上固定安装有电筛轴,以电筛轴为轴安装有电动筛网,两个电动筛网在扩径杂物分离器内部搭接,电筛轴与电机轴连接。在扩径杂物分离器与煤粉出口对接处安装有上层筛网。本技术结构简单,安装操作便捷,能够有效防止杂物进入粉仓和给粉机中,卡跳给粉机,减少额外工作量以及影响燃烧稳定和运行安全。附图说明图1是装有本技术的火电厂整体给煤系统结构示意图;图2是本技术结构示意图;是本技术处于磨煤机停止制粉后,保持负压时杂物分离器筛网状态图;图3是本技术结构示意图;是本技术处于清理杂物过程中杂物分离器筛网状态图;图4是本技术 ...
【技术保护点】
1.一种火电厂制粉系统杂物分离器,其特征在于:在粉煤及杂物通道(4)与煤粉出口(6)之间安装有扩径杂物分离器(5),扩径杂物分离器(5)的外径大于粉煤及杂物通道(4)和煤粉出口(6)的外径;在扩径杂物分离器(5)上开有两个杂物清理口(13),两个杂物清理口(13)的位置相对,在杂物清理口(13)底沿上固定安装有门轴(12),以门轴(12)为轴分别安装有相互独立的杂物门(11)和下层筛网(10),下层筛网(10)长度与电筛轴(9)和门轴(12)之间距离相同,在扩径杂物分离器(5)内壁上固定安装有电筛轴(9),以电筛轴(9)为轴安装有电动筛网(8),两个电动筛网(8)在扩径杂物分离器(5)内部搭接,电筛轴(9)与电机轴连接;在扩径杂物分离器(5)与煤粉出口(6)对接处安装有上层筛网(7)。
【技术特征摘要】
1.一种火电厂制粉系统杂物分离器,其特征在于:在粉煤及杂物通道(4)与煤粉出口(6)之间安装有扩径杂物分离器(5),扩径杂物分离器(5)的外径大于粉煤及杂物通道(4)和煤粉出口(6)的外径;在扩径杂物分离器(5)上开有两个杂物清理口(13),两个杂物清理口(13)的位置相对,在杂物清理口(13)底沿上固定安装有门轴(12),以门轴(12)为轴分...
【专利技术属性】
技术研发人员:张弛,蔡成志,仇秀国,马高明,
申请(专利权)人:长春热电发展有限公司,
类型:新型
国别省市:吉林,22
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