The utility model discloses a gas spray gun for the production of iron and steel enterprises, which comprises a shell, an inner cylinder, a nozzle and a valve, the shell is provided with a nozzle, the nozzle is fixed at the nozzle, the inner cylinder is inserted into the shell and extends to the nozzle, the nozzle of the shell forms a mixing cavity around the outer side of the inner cylinder, the side wall of the inner cylinder corresponds to the mixing cavity, and the valve comprises A valve core and an elastic part, wherein the valve core is a stepped cylindrical structure, the small end of the valve core is inserted into the inner hole of the inner cylinder, the large end of the valve core is axially slidably installed in the inner cavity of the nozzle, the elastic part is axially supported between the valve core and the nozzle, the nozzle is provided with a first diversion hole communicated with the mixing cavity, and the large end of the valve core is internally provided with a second diversion hole; the coal for production of the iron and steel enterprise of the utility model Gas spray gun, designed the mechanical structure which can control the air pipeline and gas pipeline synchronously, the equipment cost is low, the operation is stable and reliable.
【技术实现步骤摘要】
钢铁企业生产用的煤气喷枪
本技术涉及一种钢铁企业生产用的煤气喷枪。
技术介绍
钢铁企业中,薄板坯连铸连轧生产线上辊底炉属于补热型加热炉,只设有上加热烧嘴,依靠高温烟气在流向下部烟道时,实现对板坯下表面的加热,而空煤气双蓄热烧嘴是将燃烧所需的空气、煤气分别在各自的蓄热箱内蓄热,依靠空气和煤气的三通阀实现空气和煤气的蓄热及燃烧过程,由于煤气和空气管路采用各自独立的阀门进行控制,需要借助高精度的电路控制系统实现同步打开和同步关闭,设备成本较高。
技术实现思路
针对现有技术中的缺陷,本技术提供一种钢铁企业生产用的煤气喷枪,设计了能够对空气管路和煤气管路进行同步控制的机械结构,设备成本低,运行稳定可靠。本技术的钢铁企业生产用的煤气喷枪,包括外壳、内筒、喷嘴和阀门,所述外壳设有喷口,所述喷嘴固定在喷口处,所述内筒插入外壳内并延伸至喷口处,外壳的喷口处形成环绕内筒外侧的混合腔,所述外壳上安装有与混合腔连通的空气三通阀,内筒远离所述喷口的一端连接有煤气管路,所述内筒的侧壁对应混合腔设有侧孔,所述阀门包括阀芯和弹性件,所述阀芯为阶梯圆柱结构,阀芯的小端插入内筒的内孔,阀芯的大端轴向滑动安装于喷嘴的内腔,所述弹性件轴向支撑于阀芯和喷嘴之间,喷嘴上设有与混合腔连通的第一导流孔,阀芯大端的内部设有第二导流孔,阀芯的大端与喷嘴内腔单自由度滑动配合,通过内筒内的压力大小来控制阀芯移动。进一步,所述弹性件压缩后,侧孔打开,第一导流孔与第二导流孔对正,使内筒内的煤气通过侧孔流入混合腔内与空气混合,再通过第一导流孔和第 ...
【技术保护点】
1.一种钢铁企业生产用的煤气喷枪,其特征在于:包括外壳、内筒、喷嘴和阀门,所述外壳设有喷口,所述喷嘴固定在喷口处,所述内筒插入外壳内并延伸至喷口处,外壳的喷口处形成环绕内筒外侧的混合腔,所述外壳上安装有与混合腔连通的空气三通阀,内筒远离所述喷口的一端连接有煤气管路,所述内筒的侧壁对应混合腔设有侧孔,所述阀门包括阀芯和弹性件,所述阀芯为阶梯圆柱结构,阀芯的小端插入内筒的内孔,阀芯的大端轴向滑动安装于喷嘴的内腔,所述弹性件轴向支撑于阀芯和喷嘴之间,喷嘴上设有与混合腔连通的第一导流孔,阀芯大端的内部设有第二导流孔。/n
【技术特征摘要】
1.一种钢铁企业生产用的煤气喷枪,其特征在于:包括外壳、内筒、喷嘴和阀门,所述外壳设有喷口,所述喷嘴固定在喷口处,所述内筒插入外壳内并延伸至喷口处,外壳的喷口处形成环绕内筒外侧的混合腔,所述外壳上安装有与混合腔连通的空气三通阀,内筒远离所述喷口的一端连接有煤气管路,所述内筒的侧壁对应混合腔设有侧孔,所述阀门包括阀芯和弹性件,所述阀芯为阶梯圆柱结构,阀芯的小端插入内筒的内孔,阀芯的大端轴向滑动安装于喷嘴的内腔,所述弹性件轴向支撑于阀芯和喷嘴之间,喷嘴上设有与混合腔连通的第一导流孔,阀芯大端的内部设有第二导流孔。
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