CN106457608B - 具有增强流动和发泡几何形状的浆料混合器闸门 - Google Patents
具有增强流动和发泡几何形状的浆料混合器闸门 Download PDFInfo
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Abstract
一种排出闸门(36)被提供用于石膏浆料混合器(12),并且包括下部构件(44),所述下部构件(44)具有配置成用于接收浆料的入口(52),和配置成用于将浆料输送到分配装置的出口(54)。上部构件(46)附连到所述下部构件(44),所述上部和下部构件(44、46)中的至少一个具有至少一个开口(76)以便容纳用于将泡沫引入到浆料的注入口(80)的插入。腔(48)配置成用于混合泡沫和浆料,并且由所述下部构件(44)和所述上部构件(46)的内表面限定。
Description
相关申请
本申请根据35USC 119(e)要求基于2014年5月19日提交的美国临时申请No.62/000,244的优先权。
技术领域
本公开总体上涉及一种用于从包括煅烧石膏和水的起始材料制备石膏产品的方法和装置,并且更特别地涉及与用于将搅拌的石膏浆料供应到墙板生产线的浆料混合器结合使用的改进装置。
背景技术
众所周知,通过将煅烧石膏分散在水中以形成浆料,然后将浆料浇铸到期望成型模具中或表面上,并且通过煅烧石膏(硫酸钙半水合物或无水石膏)与水反应形成水合石膏(硫酸钙二水合物)使浆料凝固以形成硬化石膏,从而生产石膏产品。通过将水性泡沫混合到浆料中以产生气泡来生产轻质石膏产品也是众所周知的。如果在硬化石膏形成之前气泡不从浆料逸出,这将导致凝固石膏产品中的空隙的期望分布。空隙降低了最终产品的密度,其通常被称为“发泡石膏”。
用于解决与生产泡沫石膏相关的一些操作问题的现有装置和方法在共同转让的美国专利No.5,638,635;No.5,643,510;No.6,494,609;和No.6,874,930中被公开;上述专利全部通过引用合并于本文中。本发明总体上涉及用于在石膏墙板的生产中配制石膏浆料的混合器。
石膏墙板混合器典型地包括限定混合室的外壳,所述混合室具有用于接收煅烧石膏和水(以及本领域公知的其它添加剂)的源的入口。混合器包括叶轮或其它类型的搅拌器以便搅拌待混合为混合物或浆料的内容物。这种混合器典型地具有带有截止块或门的矩形排出闸门或槽。排出闸门控制来自混合器的浆料的流动,但是当产品需求改变时,例如当需要更厚或更薄的墙板时,难以调整以改变浆料流动。
在浆料已经基本混合之后,泡沫和/或其它添加剂典型地通过在排出闸门的外侧壁上的泡沫注入口被添加,水性泡沫或其它期望的添加剂,例如缓凝剂,促进剂,分散剂,淀粉,粘合剂,和强度增强产品,包括聚磷酸盐、三偏磷酸钠等。为了促进泡沫或其它添加剂更均匀地混合到石膏浆料中,设计者的目的是防止泡沫和/或添加剂向后流动并且进入混合室以过早地与石膏浆料混合。
用于接收混合浆料的排出闸门的入口典型地装备有用于防止浆料块进入排出闸门的块杆或格栅。因此,在一些应用中,入口配置成大并且尺寸过大,并且当泡沫和/或添加剂被注入排出闸门的腔中时导致浆料流动问题。具体地,排出闸门的大入口使得难以使腔面积与从入口流动到排出闸门的出口的混合浆料的体积匹配。如果闸门未充满,则块可以由混合器中的浆料流产生的涡流型形成。
因此,若干因素组合以提供适当操作的石膏墙板混合器,并且这些包括排出闸门的尺寸,块杆是否遮挡闸门开口,混合器中的浆料的体积,以及泡沫引入浆料中的点。
所以,需要一种具有注入口的改进的排出闸门,其提供期望的90°注入角和与流动通过混合器的混合浆料的体积匹配的腔面积。
发明内容
本公开提供一种装置,其促进排出闸门内部的改善的浆料流和混合物,并且提供改进的注入口构造。在现有技术的混合器中,在浆料离开闸门之后将泡沫引入浆料中。本排出闸门的重要方面在于闸门具有相对于通过闸门的混合浆料流的行进或流动方向成90°角定位的注入口。一个或多个注入点优选位于闸门的上壁和/或下壁中。此外,在本领域中已知,对注入位置和取向的非常小的调节产生显著的性能影响。已经发现,排出闸门中的注入口的90°角取向对于促进泡沫在整个浆料中的期望分布是非常有益的。
而且,重要的是当浆料从混合室流动以便增强泡沫和浆料在排出闸门中混合时保持排出闸口的腔充满浆料。尽管泡沫和浆料的混合动力学有些不可预测,但是重要的是当其离开闸门时实现泡沫与移动浆料的均匀混合。在本混合器闸门中,在闸门内部安装闸门填充块以便更容易地用浆料填充闸门。因此,注入闸门中的泡沫与浆料更均匀地混合。
在一个实施例中,提供一种用于石膏浆料混合器的排出闸门,其包括下部构件,所述下部构件具有配置成用于接收浆料的入口,和配置成用于将浆料输送到分配装置的出口。上部构件附连到所述下部构件,所述上部构件和所述下部构件中的至少一个具有至少一个开口以便容纳用于将泡沫引入到浆料的注入口的插入。腔在所述闸门中被限定并且配置成用于混合泡沫和浆料,并且由所述下部构件和所述上部构件的内表面限定。
在另一实施例中,提供一种石膏墙板浆料混合器排出闸门。下部构件包括在所述排出闸门中,所述下部构件具有配置成用于接收浆料的入口,和配置成用于输送浆料的出口。附连到所述下部构件的上部构件也包括在所述排出闸门中,其中所述上部构件和所述下部构件中的至少一个具有至少一个开口以便容纳用于将泡沫引入到浆料的注入口的插入。在优选实施例中,所述注入口大致垂直于通过所述排出闸门的浆料的流动方向而取向。腔构造和布置成用于在所述排出闸门中混合泡沫和浆料,并且由所述下部构件和所述上部构件的内表面限定。具有入口侧和出口侧的闸门填充块插入所述腔中,其中所述入口侧具有连续地遵循所述排出闸门的入口的轮廓的倾斜坡道。
附图说明
图1是包含本排出闸门的特征的混合装置的局部示意性平面图;
图2A是本排出闸门的示意性俯视透视图,其特征在于下部构件和闸门填充块;
图2B是沿着图2A的线2B-2B并且在大体上指示的方向上的竖直横截面;
图3是本排出闸门的示意性平面图,其特征在于具有注入开口的上部构件;
图4是示例性注入口的放大示意性前视图;以及
图5是沿着图3的线5-5并且在大体上指示的方向上的竖直横截面,其特征在于图4的注入口安装在本排出闸门的上部构件上。
具体实施方式
现在参考图1,用于混合和分配浆料的示例性混合装置总体上标记为10,并且包括具有配置成用于接收和混合浆料的外壳14的混合器12。外壳14限定混合室16,其优选为大致圆柱形,具有大致竖直的轴线18,上径向壁20,下径向壁22和环形周壁24。用于煅烧石膏的入口26和用于水的入口28都定位在上径向壁20上,优选地邻近竖直轴线18。应当领会入口26、28分别连接到石膏和水供应容器(未显示),使得石膏和水可以通过简单的重力进料供应到混合室16。而且,在本领域中众所周知,常常在浆料中使用以制备石膏产品的除石膏和水之外的其它材料或添加剂(例如,促进剂,缓凝剂,填料,淀粉,粘合剂,增强剂等)也可通过类似定位的这些或其它入口被供应。
搅拌器30布置在混合室16中,并且具有与竖直轴线18同心地定位的大致竖直的驱动轴32并且延伸通过上径向壁20。轴32连接到常规的驱动源,例如电机,用于以适于搅拌搅拌器30以混合混合室16的内容物的任何速度旋转轴。在275-300rpm的范围内的速度是常见的。该旋转在大体上离心的方向上,例如以箭头A所指示的顺时针向外螺旋引导所得到的水性浆料。旋转方向取决于混合器和闸门设计和/或构造,并且可以变化以适合应用。应当领会搅拌器的该描述是相对简单化的,并且仅仅意味着指示本领域中已知的石膏浆料混合室中通常使用的搅拌器的基本原理。预料替代的搅拌器设计,包括采用销或桨的设计。另外,本闸门设计预期与用于搅拌石膏浆料的无销钉混合器一起使用。
在混合器出口34处,排出闸门36附连到混合器12的周壁24以便经由导管40在由箭头B指示的方向将充分混合的浆料的主要部分排出到分配装置38中。如本领域中已知的,由分配装置排放的浆料的最终目的地是包括移动传送带的石膏墙板生产线。尽管出口34的几何形状被示出为在横截面上为矩形,但是根据应用预料其它合适的形状。而且,尽管预期混合器12的具体配置可以变化,但是优选的是,本混合器是通常用于制造石膏墙板的离心型,并且也是这样的类型,在所述类型中出口34切向于外壳14分配浆料。截止块42与排出闸门36整体形成,从而对于典型地在1/4到1的范围内的墙板的期望厚度机械地调节浆料流。
在操作期间,截止块42常常产生用于石膏的过早凝固的位置,从而导致浆料积聚和生产线的最终堵塞和中断。此外,当针对厚墙板设置排出闸门36并且转换成薄墙板时,在混合室16中提供不足的背压,这在一些情况下导致浆料成分的不完全和不均匀混合。而且,不足的背压导致混合室16中的离心内部流动中的死点或慢点,从而导致浆料的过早凝固和混合物中不希望的团块。在这样的情况下,墙板线必须关闭以进行维护,从而导致生产效率低。如下面更详细地解释,本排出闸门36提供这些操作问题的解决方案。
现在参考图2-3,优选的是排出闸门36包括下部构件或主体44(图2A)和上部构件或板46(图3),其中下部和上部构件附连在一起以限定在下部和上部构件的内表面50之间的腔48,用于混合来自混合室16的浆料和泡沫。典型地,上部和下部构件44、46分离大致对应于上部和下部混合器径向壁20、22的距离。如下面更详细地论述,泡沫从上部构件46注入。
包括在下部构件44中的是配置成用于从混合室16接收混合浆料的入口52,和配置成用于将混合浆料输送到分配装置38(图1)的出口54。入口52大致遵循外壳14(图1)的环形周壁24的轮廓或剖面。在下部构件44中也包括多个块杆56,其在一个端部处连接到下部构件的第一侧壁58,并且在相对端部处连接到下部构件的相对的第二侧壁60,用于防止浆料块进入排出闸门36的腔48。第二侧壁60是截止块42的一部分。下部和上部构件44、46的附连通过使用第一和第二侧壁58、60以及常规紧固件、粘合剂、焊接或本领域已知的其它合适的方法来实现。
本排出闸门36的重要特征是提供具有预定厚度T(图2B)的闸门填充块62以减少腔48内的浆料积聚和堵塞。在优选实施例中,闸门填充块62由金属制造,但是预料其它等同的耐用材料。闸门填充块62的外周边大致遵循下部构件44的内底表面64的轮廓,使得填充块基本上覆盖第一和第二侧壁58、60之间的内底表面。在优选实施例中,闸门填充块62的使用将腔48的体积减小大约50%。
现在参考图2A和2B,倾斜坡道或边缘66设在闸门填充块62的入口侧68处,连续地遵循下部构件44的入口52的轮廓或剖面。因此,当闸门填充块62如箭头C所示插入腔48中时,填充块的入口侧68与下部构件44的入口52的轮廓对准,并且填充块的相对的出口侧70与下部构件的出口54的轮廓对准。而且,闸门填充块62的侧边缘72直接抵靠下部构件44的第一和第二侧壁58、60。
坡道66的示例性角度α(图2B)为大约30度,从闸门填充块62的入口侧68到出口侧70逐渐倾斜预定距离D,并且在到达该距离之后保持预定厚度T。预料距离D的大小是可变的以适合应用。倾斜坡道66便于混合浆料从混合室16的平稳流动,并且因此在进入排出闸门36的腔48时不会破坏浆料流动。此外,填充块62的预定厚度T减小排出闸门36中的腔48的总内部高度H,并且允许混合浆料在用于泡沫注入操作的腔中的更均匀分布。
闸门填充块62的该配置允许腔48的体积面积匹配流动通过其中的混合浆料的体积,并且泡沫被均匀且均衡地分布和填充以便提供泡沫和浆料的期望混合物。尽管闸门填充块62显示为安装在下部构件44的内底表面64上,但是也预料闸门填充块可选地安装在腔48内部的上部构件46的内顶表面74(图2B、3和5)上。
现在参考图1、2A和3,上部构件46和下部构件44中的至少一个具有至少一个注入开口或泡沫槽76,其定位在由腔48限定的浆料通路78附近或中心。尽管在图3中仅仅显示一个注入开口76,但是取决于应用预料任何数量的开口。开口76的位置优选地在浆料通路78的中间,但是预料通路中的其它位置适合于该应用。在另一实施例中,开口76可以布置在下部构件44的通路78中,或者分别在下部和上部构件44、46两者上。优选的是开口76是线性的,类似于投币槽开口,但是预料其它非线性几何形状,例如锯齿形、椭圆形和不规则形状。
如图1和图4中所示,使用用于引入水性泡沫或其它期望添加剂的注入口80(图4),通过排出闸门36的上部构件46中的开口76注入泡沫。如上所述,取决于相应开口76的位置,排出闸门36可以具有单个上部或下部注入口或多个注入口以适合应用。
现在参考图4和5,注入口80具有长形主体82和张开的出口端部84,其尺寸确定成适合用于将泡沫注入排出闸门36的腔48中的开口76。优选的是端部84张开以便增加喷出泡沫的压力。因此,泡沫与通过排出闸门36的浆料更均匀地混合。在优选实施例中,长形主体82具有圆柱形状,但是预料其它合适的形状以适合不同的应用。而且,优选的是张开端部84具有大致长的窄开口86以适合开口76,但是预料其它合适类型的开口。
本注入口80的一个重要方面是该口附连到与开口76流体连通的上部构件46,使得泡沫穿过该口,并且相对于排出闸门36中的浆料流的移动方向以近似90°角注入腔48中的移动浆料中。注入口80的张开端部84优选地与腔48内部的上部构件46的内顶表面74基本上齐平。注入口80的该配置实现相对于浆料流的90度的期望泡沫注入角,并且防止泡沫和/或添加剂回流并进入混合室16(图1)。
已发现本混合器闸门配置(特别是具有闸门填充块)便于从具有减少的块的混合器分配石膏浆料,并且同时保持期望流体积。而且,执行将泡沫引入浆料中使得存在将泡沫再引入混合器中的较小风险。本闸门也可用于传统闸门杆,其被提供用于减少块在混合器的下游流入浆料中。
尽管已显示和描述本排出闸门的特定实施例,但是本领域的技术人员将领会可以对其进行变化和修改而在其更广泛方面不脱离本公开。
Claims (6)
1.一种用于石膏浆料混合器的排出闸门,所述混合器具有外壳,所述外壳具有环形周壁,所述排出闸门包括:
下部构件,所述下部构件部分地限定了用于接收浆料的入口,和用于将所述浆料输送到分配装置的出口,所述入口限定的环形边缘与所述外壳的环形周壁接合;
注入口,所述注入口构造和设置得用于将泡沫引入到形成于所述混合器中的浆料中;
上部板构件,所述上部板构件附连到所述下部构件并且与所述下部构件竖直地间隔开,所述上部板构件也具有与所述外壳的环形周壁接合的环形边缘,所述上部构件和所述下部板构件中的至少一个具有至少一个注入开口,以便容纳用于将泡沫引入到所述浆料的注入口的插入;
腔,所述腔配置成用于混合所述泡沫和浆料,并且由所述下部构件和所述上部板构件的内表面限定;
闸门填充块,所述闸门填充块插入所述腔中,并且具有入口侧和出口侧,所述入口侧位于所述入口中,所述闸门填充块被配置成通过基本上覆盖所述下部构件和所述上部板构件中的至少一个的内表面而减小所述腔的体积。
2.根据权利要求1所述的排出闸门,其中所述闸门填充块的入口侧具有倾斜坡道,所述闸门填充块将所述腔的容积减小50%。
3.根据权利要求2所述的排出闸门,其中所述倾斜坡道连续地遵循所述排出闸门的入口的所述环形边缘。
4.根据权利要求1所述的排出闸门,其中所述注入口具有张开的出口端部。
5.根据权利要求1所述的排出闸门,其中所述注入口大致垂直于通过所述排出闸门的浆料的流动方向而取向。
6.一种石膏墙板浆料混合器排出闸门,其包括:
下部构件,所述下部构件具有配置成用于接收浆料的入口,和配置成用于输送所述浆料的出口;
附连到所述下部构件的上部板;
注入口,所述注入口用于插入所述下部构件和所述上部板之一中;
所述上部板和所述下部构件中的至少一个具有至少一个注入开口,以便容纳用于将泡沫引入到所述浆料的注入口的插入,所述注入口大致垂直于通过所述排出闸门的浆料的流动方向而取向;
腔,所述腔构造和布置成用于在所述排出闸门中混合所述泡沫和浆料,并且由所述下部构件和所述上部板的内表面限定;以及
具有入口侧和出口侧的闸门填充块插入所述腔中,所述入口侧位于所述入口中,所述闸门填充块基本上覆盖所述下部构件和所述上部板中的一个的内表面,所述入口侧具有连续地遵循所述排出闸门的入口的环形边缘的倾斜坡道,所述环形边缘与外壳的周壁的环形轮廓接合。
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RU2016147404A (ru) | 2018-06-20 |
AU2015264622A1 (en) | 2016-12-15 |
EP3145686B1 (en) | 2021-07-14 |
PL3145686T3 (pl) | 2021-11-08 |
UA122125C2 (uk) | 2020-09-25 |
US20150328607A1 (en) | 2015-11-19 |
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JP2017520426A (ja) | 2017-07-27 |
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BR112016026063B1 (pt) | 2022-01-25 |
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CN106457608A (zh) | 2017-02-22 |
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JP6752152B2 (ja) | 2020-09-09 |
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