CN107192261A - 一种用于烧制砖的隧道窑及烧制方法 - Google Patents
一种用于烧制砖的隧道窑及烧制方法 Download PDFInfo
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Abstract
本发明涉及一种用于烧制砖的隧道窑及烧制方法,所述隧道窑包括隧道窑本体和沿着隧道窑本体走向设置的运输轨道,所述运输轨道上放置有用于运载砖块的窑车,所述隧道窑本体包括预热段、燃烧段和冷却段,所述燃烧段内安装有点火装置,所述隧道窑本体还包括外燃提温段,所述外燃提温段位于所述燃烧段和冷却段之间,所述外燃提温段的窑壁上设置有若干喷嘴和通风口,所述预热段与燃烧段之间以及外燃提温段与冷却段之间均安装有风帘机,所述喷嘴与供气或供油装置连接。本发明的用于烧制砖块的隧道窑具有烧制的砖块品质高和透水性好以及节能环保的优点。
Description
技术领域
本发明涉及隧道窑技术领域,具体涉及一种用于烧制砖的隧道窑及烧制方法。
背景技术
传统的隧道窑为三段式隧道窑,三段式隧道窑包括预热段、燃烧段和冷却段,砖块的烧制主要是在燃烧段进行,通过向燃烧段内加入煤粉点燃后来提升砖块的温度,引燃砖块中掺杂的煤渣或煤矸石,最终通过砖块中的煤渣或煤矸石燃烧将砖块烧制为成品砖,由于在烧制过程中主要依靠砖块中的煤渣或煤矸石燃烧将砖块烧制成为品砖,如果砖块中的煤渣或煤矸石过少或者燃烧不充分,烧出的成品砖会出现黑心现象,严重影响砖块的品质,此外使用煤粉烧制砖块的过程中会产生大量的二氧化碳和一氧化碳,对空气造成污染。
发明内容
本发明的目的在于提供一种用于烧制砖的隧道窑及烧制方法,用以解决现有的隧道窑烧制砖过程中容易出现黑心现象和环境污染问题。
为实现上述目的,本发明提供一种用于烧制砖的隧道窑,所述隧道窑包括隧道窑本体和沿着隧道窑本体走向设置的运输轨道,所述运输轨道上放置有用于运载砖块的窑车,所述隧道窑本体包括预热段、燃烧段和冷却段,所述燃烧段内安装有点火装置,其特征在于,所述隧道窑本体还包括外燃提温段,所述外燃提温段位于所述燃烧段和冷却段之间,所述外燃提温段的窑壁上设置有若干喷嘴和通风口,所述预热段与燃烧段之间以及外燃提温段与冷却段之间均安装有风帘机,所述喷嘴与供气或供油装置连接。
优选的,所述外燃提温段的窑壁上设置有观察口。
优选的,所述冷却段安装有冷却风机。
优选的,所述用于烧制砖的隧道窑还包括温度检测装置,温度检测装置包括显示器、采集处理单元、供电单元、温度探头和温度测量电路,所述温度探头安装在所述外燃提温段的窑壁上,所述温度探头与所述温度测量电路连接,所述采集处理单元分别与显示器、供电单元、温度测量电路连接,所述温度探头用于实时检测外燃提温段内部温度并将其转化成温度电信号发送给温度测量电路,所述温度测量电路对温度电信号进行放大和处理后发送给采集处理单元,所述采集处理单元用于对温度测量电路发送的温度电信号进行采集和运算。
优选的,所述采集处理单元为单片机。
相对应的,本发明的另一目的在于提供一种用于烧制砖的烧制方法,包括以下步骤:
步骤1,窑车运载着自然风干后的砖块进入所述预热段,通过所述预热段内部的热量对砖块进行烘干;
步骤2,烘干后的砖块进入所述燃烧段,所述点火装置向所述砖块喷射火焰,进一步提升砖块的温度,砖块内掺杂的可燃颗粒开始自燃;
步骤3,砖块内掺杂的可燃颗粒燃烧完毕后进入所述外燃提温段,所述喷嘴向砖块喷射火焰,使得砖块的温度提升至目标温度维持一段时间;
步骤4,砖块从所述外燃提温段进入所述冷却段后自然降温。
优选的,在执行步骤4的同时执行以下步骤:冷却风机工作对砖块进行强降温,使得砖块的温度降至420-450℃之间时,关闭冷却风机,砖块继续自然降温。
优选的,所述目标温度的范围为1000-1100℃。
优选的,所述可燃颗粒为煤渣或煤矸石。
本发明具有如下优点:本发明的用于烧制砖块的隧道窑具有烧制的砖块品质高和透水性好以及节能环保的优点。
附图说明
图1为本发明用于烧制砖的隧道窑俯视剖面结构示意图。
图2为本发明用于烧制砖的隧道窑主视剖面结构示意图。
图3为本发明用于烧制砖的烧制方法的流程图。
具体实施方式
以下实施例用于说明本发明,但不用来限制本发明的范围。
实施例1
如图1和2所示,该用于烧制砖的隧道窑包括隧道窑本体1和沿着隧道窑本体1走向设置的运输轨道2,运输轨道2上放置有用于运载砖块移动的窑车21,窑车21运载着砖块从预热段进入隧道窑本体1内,从冷却段的出口将砖块运出隧道窑本体1。隧道窑本体1包括预热段11、燃烧段12、外燃提温段14和冷却段13,预热段11与燃烧段12连通,预热段11与燃烧段12之间安装有风帘机,风帘机产生的强大气流形成一面无形的门帘将预热段11与燃烧段12隔离,防止燃烧段12内大量的热量进入预热段11,使燃烧段12内的温度降低。窑车21上的砖块在预热段11内利用预热段11内的热量对砖块进行烘干,烘干完毕后,窑车21运载着砖块进入燃烧段12,燃烧段12与外燃提温段14连通,燃烧段12的窑壁上设置有若干通风口,通风口与第一风机连接,通过通风口向外燃提温段14内提供空气。燃烧段12内安装有点火装置,点火装置向砖块喷射火焰,进一步提升砖块的温度,砖块内掺杂的可燃颗粒开始自燃,点火装置可以停止工作,也可以继续工作,在此阶段中,烧制砖块的热量主要依靠砖块内掺杂的可燃颗粒,可燃颗粒为煤渣或煤矸石中的一种或两种的组合。当砖块内掺杂的可燃颗粒燃烧完毕后,窑车21运载着砖块进入外燃提温段14,外燃提温段14位于燃烧段12和冷却段13之间,通过外燃提温段14将燃烧段12和冷却段13连通,外燃提温段14的窑壁上同样也设置有若干喷嘴141和通风口,通风口与第二风机连接,通过通风口向外燃提温段14内提供空气。喷嘴141与供气装置连接,喷嘴141可以向外燃提温段14内喷射天然气、煤气或重油,当使用重油时作为燃料时,喷嘴141与油泵连接,通过油泵将重油从喷嘴141泵出,通过使用天然气或煤气,可减少一氧化碳的排放,减小环境污染。外燃提温段14与冷却段13之间同样也安装有风帘机,该风帘机可减少外燃提温段14内的热量散失。外燃提温段14的窑壁上设置有观察口142,工作人员可通过观察口142随时查看外燃提温段14内砖块的烧制情况,并随时调整火焰的大小。进一步的,为了使外燃提温段14内的温度恒定,用于烧制砖块的隧道窑还包括温度检测装置,温度检测装置包括显示器、采集处理单元、供电单元、温度探头和温度测量电路,温度探头安装在外燃提温段14的窑壁上,温度探头与温度测量电路连接,采集处理单元分别与显示器、供电单元、温度测量电路连接,温度探头用于实时检测外燃提温段14内部温度并将其转化成温度电信号发送给温度测量电路,温度测量电路对温度电信号进行放大和处理后发送给采集处理单元,采集处理单元在本实施例中为单片机,采集处理单元用于对温度测量电路发送的温度电信号进行采集,并根据其内部预设的程序运算出外燃提温段14的内部温度,最后采集处理单元控制显示器实时显示外燃提温段14的内部温度,工作人员根据显示器上显示的温度,通过控制供气或供油装置来调整喷嘴141喷出的火焰大小,使得外燃提温段14的内部温度保持在恒定范围内,从而达到精确控制外燃提温段14内部的温度,提高烧制砖块的品质。砖块在外燃提温段14内烧制一端时间后,窑车21运载着砖块进入冷却段13,砖块通过冷却风机进行强行冷却到一定温度后再通过自然冷却,最后通过窑车21将冷却完毕的成品砖块从冷却段13的出口运出。由于砖块中的煤渣或煤矸石在燃烧之后,会在砖块中留下相互连通的孔隙,使得烧制好的成品砖块具有很好的透水性。
图3示出了图1所示的用于烧制砖的隧道窑的烧制砖方法流程图,包括以下步骤:
步骤1,窑车21运载着自然风干后的砖块进入预热段11,通过预热段11内部的热量对砖块进行烘干;
窑车21运载着自然风干后的砖块进入预热段11,由于自然风干后的砖块中依然含有较多水分,砖块在预热段11内部热量的烘烤下进行烘干,同时砖块的温度也会随之上升,降低下一步烧制砖块过程燃料的用量。
步骤2,烘干后的砖块进入燃烧段12,点火装置向砖块喷射火焰,进一步提升砖块的温度,砖块内掺杂的可燃颗粒开始自燃;
窑车21运载着烘干后的砖块进入燃烧段12,点火装置向砖块喷射火焰,进一步提升砖块的温度,使得燃烧段12内的温度保持在800℃左右,砖块内掺杂的可燃颗粒开始自燃,点火装置可停止工作,也可继续工作,在此阶段中,烧制砖块的热量主要依靠砖块内掺杂的可燃颗粒。
步骤3,砖块内掺杂的可燃颗粒燃烧完毕后进入外燃提温段14,喷嘴141向砖块喷射火焰,使得砖块的温度提升至目标温度维持一段时间;
当砖块内掺杂的可燃颗粒燃烧完毕后由于砖块并未完全烧制完成,砖块内部可能存在黑心现象,因此需要在外燃提温段14内继续烧制,进一步提升砖块的温度,提高砖块的品质,喷嘴141向砖块喷射火焰,使得砖块的温度提升至目标温度维持一段时间,目标温度的范围为1000-1100℃。
步骤4,砖块从外燃提温段14进入冷却段13后自然降温。
砖块从外燃提温段14进入冷却段13后进行自然降温,但是由于窑内砖块的温度降低速度较慢,因此,可通过冷却风机工作对砖块进行强降温,使得砖块的温度降至420-450℃之间时,为了防止砖块的表面出现裂缝,关闭冷却风机,砖块再继续自然降温。
虽然,上文中已经用一般性说明及具体实施例对本发明作了详尽的描述,但在本发明基础上,可以对之做一些修改或改进,这对本领域技术人员而言是显而易见的。因此,在不偏离本发明精神的基础上所做的这些修改或改进,均属于本发明要求保护的范围。
Claims (9)
1.一种用于烧制砖的隧道窑,所述隧道窑包括隧道窑本体和沿着隧道窑本体走向设置的运输轨道,所述运输轨道上放置有用于运载砖块的窑车,所述隧道窑本体包括预热段、燃烧段和冷却段,所述燃烧段内安装有点火装置,其特征在于,所述隧道窑本体还包括外燃提温段,所述外燃提温段位于所述燃烧段和冷却段之间,所述外燃提温段的窑壁上设置有若干喷嘴和通风口,所述预热段与燃烧段之间以及外燃提温段与冷却段之间均安装有风帘机,所述喷嘴与供气或供油装置连接。
2.根据权利要求1所述的用于烧制砖的隧道窑,其特征在于,所述外燃提温段的窑壁上设置有观察口。
3.根据权利要求1所述的用于烧制砖的隧道窑,其特征在于,所述冷却段安装有冷却风机。
4.根据权利要求1所述的用于烧制砖的隧道窑,其特征在于,所述隧道窑还包括温度检测装置,温度检测装置包括显示器、采集处理单元、供电单元、温度探头和温度测量电路,所述温度探头安装在所述外燃提温段的窑壁上,所述温度探头与所述温度测量电路连接,所述采集处理单元分别与显示器、供电单元、温度测量电路连接,所述温度探头用于实时检测外燃提温段内部温度并将其转化成温度电信号发送给温度测量电路,所述温度测量电路对温度电信号进行放大和处理后发送给采集处理单元,所述采集处理单元用于对温度测量电路发送的温度电信号进行采集和运算。
5.根据权利要求4所述的用于烧制砖的隧道窑,其特征在于,所述采集处理单元为单片机。
6.一种用于烧制砖的烧制方法,其特征在于,包括以下步骤:
步骤1,窑车运载着自然风干后的砖块进入所述预热段,通过所述预热段内部的热量对砖块进行烘干;
步骤2,烘干后的砖块进入所述燃烧段,所述点火装置向所述砖块喷射火焰,进一步提升砖块的温度,砖块内掺杂的可燃颗粒开始自燃;
步骤3,砖块内掺杂的可燃颗粒燃烧完毕后进入所述外燃提温段,所述喷嘴向砖块喷射火焰,使得砖块的温度提升至目标温度维持一段时间;
步骤4,砖块从所述外燃提温段进入所述冷却段后自然降温。
7.根据权利要求6所述的用于烧制砖的烧制方法,其特征在于,在执行步骤4的同时执行以下步骤:冷却风机工作对砖块进行强降温,使得砖块的温度降至420-450℃之间时,关闭冷却风机,砖块继续自然降温。
8.根据权利要求6所述的用于烧制砖的烧制方法,其特征在于,所述目标温度的范围为1000-1100℃。
9.根据权利要求6所述的用于烧制砖的烧制方法,其特征在于,所述可燃颗粒为煤渣或煤矸石。
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