CN112283378A - 一种高气密性的消防闸阀 - Google Patents
一种高气密性的消防闸阀 Download PDFInfo
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- F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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Abstract
本发明涉及闸阀领域,尤其涉及一种高气密性的消防闸阀,包括阀体、阀盖、闸板组件、阀杆以及手轮,阀体设置有进料口和出料口,进料口和出料口之间为流道,闸板组件设于流道内,流道的底部设有闸板槽,阀杆的下端与闸板组件连接,阀杆的上端与手轮连接,闸板组件包括导向块、设于导向块两侧的左、右闸板组件,导向块的上端设有导向柱,导向柱设有导向槽,导向槽内设有内螺纹,阀杆的下端螺旋设于导向槽内,阀盖上端设有延长套,导向柱穿过阀盖伸入延长套内,手轮设于延长套上端,阀盖与导向柱接触的一侧面设有密封刮块和密封填料,密封刮块与导向柱接触的一面设有环形凸起条。其主要解决了现有技术中闸阀的密封填料中易对输送介质造成污染的问题。
Description
技术领域
本发明涉及闸阀领域,尤其涉及一种高气密性的消防闸阀。
背景技术
在现有的闸阀结构中,闸阀通常包括阀体、阀盖、阀杆和闸板,阀杆与阀体之间的密封通常采用密封填料进行密封,当阀杆与密封填料有相对运动时,由于填料的塑性,使它产生径向力,并与阀杆紧密接触,密封填料中浸渍的润滑剂被挤出,在接触面之间形成油膜,由于接触状态并不是特别均匀的,接触部位便出现“边界润滑”状态,称为“轴承效应”;而未接触的凹部形成小油槽,有较厚的油膜,接触部位与非接触部位组成一道不规则的迷宫,起阻止液流泄漏的作用,此称“迷宫效应”,这就是填料密封的机理。
然而,每次使用时,密封填料与阀杆之间的摩擦会使密封填料中的浸渍的润滑剂被频繁挤出,附着于阀杆上,然后随着阀杆的上下运动,附着于阀杆上润滑剂会被输送介质冲刷走,会对输送介质造成一定程度的污染。
发明内容
因此,针对上述的问题,本发明提出一种高气密性的消防闸阀,其主要解决了现有技术中闸阀的密封填料中易对输送介质造成污染的问题。
为实现上述目的,本发明采用了以下技术方案:一种高气密性的消防闸阀,包括阀体、阀盖、闸板组件、阀杆以及手轮,所述阀盖通过螺栓安装在阀体顶部,所述阀体设置有同轴设置的进料口和出料口,所述进料口和出料口之间为供介质流通的流道,所述闸板组件设于流道内,所述流道的底部设有闸板槽,所述阀杆的下端从阀盖穿入阀体内并与闸板组件连接,所述阀杆的上端与手轮连接,定义介质流动的方向为左右,与介质流动方向水平垂直的方向为前后,所述闸板组件包括设置于阀体内的导向块以及设于导向块左右两侧的左闸板组件和右闸板组件,所述阀体内壁于导向块前后两侧设有限位条,所述导向块的前后两侧分别设有限位槽,所述限位条伸入于限位槽内,使导向块可沿限位条上下移动,所述导向块的上端向上凸起形成导向柱,所述导向柱设有导向槽,所述导向槽内设有内螺纹,所述阀杆的下端螺旋地设于导向槽内,所述阀盖上端设有延长套,所述导向柱穿过阀盖伸入延长套内,并随着导向块沿阀盖上下移动,所述手轮通过轴承可转动地设于延长套上端,所述阀盖与导向柱接触的一侧面由下至上依次设有密封刮块和密封填料,且所述密封刮块与导向柱接触的一面由上至下等间距地绕其周向设有多条环形凸起条,各个所述环形凸起条的截面呈三角形状。
进一步地改进,所述导向块左右两侧面为楔形面,所述弹性组件包括设于闸板朝向导向块一侧面的凸柱,所述凸柱远离闸板的一端设有限位柱,所述导向块设有供凸柱插入的第一让位孔,所述第一让位孔底部设有供限位柱插入的第二让位孔,所述第一让位孔的直径大于第二让位孔的直径,所述第一让位孔内设有蝶形弹簧组,所述限位柱穿过蝶形弹簧组的内圈插入第二让位孔内,所述凸柱抵设于蝶形弹簧组上。
进一步地改进,所述限位密封组件包括绕闸板周边设置的限位钩部和设于导向块上与限位钩部配合卡接的限位凸块,所述限位凸块的外表面套设有密封圈,当所述蝶形弹簧组件处于自由状态时,所述限位钩部与限位凸块抵接。
进一步地改进,所述阀体、阀盖、导向块、导向柱、闸板以及挡板均包括按重量份数计的以下组分:碳1.3-1.6%,铬19-23%,钙0.5-1.2%,锰0.9-1.1%,硼0.2-0.5%,硅0.9-1.3%,硫0.01-0.04%,磷0.02-0.03%,钼3.0-4.0%,镍2.0-3.0%,铜1.0-1.5%,钒0.7-0.9%,钛0.9-1%,其余为铁和不可避免的杂质。
进一步地改进,所述阀体、阀盖、导向块、导向柱、闸板以及挡板的表面均涂覆有一层耐磨涂层。
进一步地改进,将未组装的阀体、阀盖、导向块、导向柱、闸板以及挡板等配件置于阴极电弧设备中,抽真空维持负压为6-7kPa,用Ar+粒子轰击前述配件表面进行溅射清洗后,采用钛铝合金靶和氮气进行沉积后冷却形成耐磨涂层。
通过采用前述技术方案,本发明的有益效果是:
1、本发明通过在密封填料下方设置有密封刮块,即在密封填料和流到之间设有密封刮块,当导向柱下降时,可通过密封刮块将由密封填料挤出且残留在导向柱上的润滑剂刮下并阻隔在密封刮块上方,在减缓密封填料中材料流失降低预紧力的同时,还可防止导向柱上润滑剂随闸阀的开启和关闭进入流到污染输送介质;
2、本发明通过在闸板与导向块之间设有弹性组件,能够使左闸板组件和右闸板组件中的闸板收到弹性组件的弹性力顶压以克服密封面磨损而导致的密封性不足的问题,同时,通过设置的弹性挡板组件,使挡板在弹性部件的作用下恢复至与流道的底部持平,使流道底部处于平整状态,避免在输送带有固体颗粒杂质的介质时,固体颗粒杂质堆积在闸板槽的底部,影响闸板组件的封堵,能够较好输送带有固体颗粒杂质的介质;
3、所述弹性组件采用蝶形弹簧组,能够有效克服弹簧在长时间的使用后会失效,导致闸板与导向块之间松脱的现象,其经济、安全性以及使用寿命优于普通弹簧;
4、本发明中的闸板通过采用限位钩部卡住限位凸块,避免闸板从导向块上脱落,同时,所述限位组件绕闸板周边设置,配合密封圈使用,使闸板呈一盖体盖设于导向块的楔形面上,避免输送介质中的固体颗粒卡入闸板与导向块之间,影响闸板组件的封堵;
5、本发明主要成分为铁、碳、铬、钙、锰、硼、硅、硫、磷合金,通过适当添加的钼、镍、铜、钒、钛等形成的合金,满足本发明结构的密度高和冲击韧性高的要求,减缓闸阀在使用中被固体颗粒冲刷导致的磨损,加强闸阀的耐用性;
6、本发明通过采用阴极电弧蒸镀的方法在阀体、阀盖、导向块、导向柱、闸板以及挡板镀上耐磨涂层,进一步提高本发明的耐磨性能。
附图说明
图1是本发明实施例的结构示意图;
图2是图1中的A-A截面结构示意图;
图3是本发明实施例密封刮块的结构示意图;
图4是本发明实施例闸板组件的结构示意图;
图5是图4中的B处局部放大图;
图6是图4中的C处局部放大图;
图7是本发明实施例闸板组件打开结构示意图。
具体实施方式
现结合附图和具体实施方式对本发明进一步说明。
参考图1至图6,本实施例提供一种高气密性的消防闸阀,包括阀体1、阀盖2、闸板组件3、阀杆4以及手轮5,所述阀盖2通过螺栓安装在阀体1顶部,所述阀体1设置有同轴设置的进料口11和出料口12,所述进料口11和出料口12之间为供介质流通的流道13,所述闸板组件3设于流道内用于封堵流道13,所述流道13的底部设有闸板槽14,所述阀杆4的下端从阀盖2穿入阀体1内并与闸板组件3螺旋连接,所述阀杆4的上端与手轮5固定连接。
定义介质流动的方向为左右,与介质流动方向水平垂直的方向为前后。
具体的,所述闸板组件3包括设置于阀体内的导向块31以及设于导向块31左右两侧的左闸板组件32和右闸板组件33,所述阀体1内壁于导向块31前后两侧设有限位条15,所述导向块31的前后两侧分别设有限位槽311,所述限位条15伸入于限位槽311内,使导向块31可沿限位条15上下移动,所述导向块31的上端向上凸起形成导向柱312,所述阀盖2上端设有延长套8,所述导向柱312穿过阀盖2伸入延长套8内,并随着导向块312沿阀盖2上下移动,所述手轮5通过轴承9可转动地设于延长套8上端,所述阀盖2与导向柱312接触的一侧面由下至上依次设有密封刮块61和密封填料62,所述密封刮块61橡胶材料制成,且所述密封刮块61与导向柱312接触的一面由上至下等间距地绕其周向设有多条环形凸起条611,各个所述环形凸起条611的截面呈三角形状,所述密封刮块61可在导向块31下降时,将由密封填料挤出且残留在导向柱312上的润滑剂刮下并阻隔在密封刮块61上方,在减缓密封填料62中材料流失降低预紧力的同时,还可防止导向柱312上润滑剂随闸阀的开启和关闭进入流到31污染输送介质,在本实施例中,所述延长套8内径小于密封填料62的外径,其可以用于对密封填料62进行限位,同时,还可以减少阀盖2的大小从而减少闸阀整体与输送介质之间的接触面积,所述导向柱312设有导向槽313,所述导向槽313内设有内螺纹(图中未示出),所述阀杆4的下端螺旋地设于导向槽313内,从而实现导向块31的上升与下降。
所述导向块31左右两侧面为楔形面,所述左闸板组件32和右闸板组件33均包括与各自对应楔形面平行设置的闸板301,所述闸板301远离其对应楔形面的一侧设有密封垫302,密封垫302用于加强闸板组件封堵流道13时的密封性,所述闸板301通过四组弹性组件303使其可相对导向块31移动,四组弹性组件303之间呈四边形分布,每组所述弹性组件303包括设于闸板301朝向导向块31一侧面的凸柱3031,所述凸柱3031远离闸板301的一端设有限位柱3032,所述导向块31设有供凸柱3031插入的第一让位孔3033,所述第一让位孔3033底部设有供限位柱3032插入的第二让位孔3034,所述第一让位孔3033的直径大于第二让位孔3034的直径,所述第一让位孔3033内设有蝶形弹簧组3035,所述限位柱3032穿过蝶形弹簧组3035的内圈插入第二让位孔3034内,所述凸柱3031抵设于蝶形弹簧组3035上,所述闸板301的周边与导向块31之间设有限位密封组件304,所述限位密封组件304包括绕闸板301周边设置的限位钩部3041和设于导向块31上与限位钩部3041配合卡接的限位凸块3042,所述限位凸块3042的外表面套设有密封圈3043,当所述蝶形弹簧组件3035处于自由状态时,所述限位钩部3041内表面与限位凸块3042抵接,
所述闸板槽14内设有弹性挡板组件,所述弹性挡板组件包括固定设于闸板槽14底部的弹性部件71和设于弹性部件71上端的挡板72,在本实施例中,所述弹性部件71为由多个弹簧组成,参考图3,当弹性部件71处于自由状态时,所述挡板72的上表面与流道13底部持平。
所述阀体1、阀盖2、导向块31、导向柱312、闸板301以及挡板72等各个配件均包括按重量份数计的以下组分:碳2.0-3.0%,铬12.0-20.0%,钙0.5-1.2%,锰1.1-1.6%,硼0.2-0.5%,硅1.0-1.2%,硫0.05-0.10%,磷0.04-0.08%,钼3.0-4.0%,镍2.0-3.0%,铜1.0-1.5%,钒0.7-0.9%,钛0.9-1%,其余为铁和不可避免的杂质,其由如下步骤制备得到:
S1、熔炼:将备好的炉料依次放入感应炉中,向感应炉中通入氩气,关闭炉门后将感应炉温度升至2700-3000℃保温3-4h,保温过程中抽真空维持负压为0.3-0.4kPa,打开炉门捞出浮在液体表面的炉渣后,感应炉中剩余液体为基质合金液;
S2、检测:取样进行化学分析,控制各化学成分在规定范围内;
S3、浇注:将基质合金液出炉向模具中进行浇注形成各个配件,基质合金液出炉温度为2600-2700℃,浇注温度为2400-2500℃,冷却至400-500℃得到各个配件合金胚体;
S4、热处理:将各个配件合金胚体放入电炉内,向电炉内通入一定氩气后,将电炉温度以10-15℃/min的升温速度升至1200-1300℃,保温3-5h后,将保温后的各个配件合金胚体取出置于温度为180-200℃的硝酸盐溶液中,待硝酸盐溶液的温度升至280-300℃进行保温,保温时间依各个配件合金胚体的尺寸大小具体设定,所述硝酸盐溶液的摩尔配比为硝酸镁:硝酸钾:硝酸钠:水=2-3:3-5:4-6:10-12;
S5、预处理:将热处理后的各个配件合金胚体在室温下浸入水中5-10min,取出干燥后浸入丙酮中并用超声清洗机进行清洗,清洗时间为15-20min,清洗温度为55-65℃,再次取出干燥后在室温下浸入乙醚中10-15min,然后取出置于真空室中进行干燥得到各个配件合金基质。
其中,在熔炼前通入的氩气,可减少熔炼中与氧气接触,减少各个配件合金基质中氧化物的含量,进一步本发明闸阀的使用寿命;在热处理中采用硝酸盐溶液进行等温淬火,先将温度升高使各个配件合金胚体中的奥氏体均匀分布,利用硝酸盐溶液的高比热容进行快速降温,使奥氏体转化成贝氏体,大幅度提高各个配件合金胚体的韧性。
为进一步提高本发明的耐磨性能,所述阀体1、阀盖2、导向块31、导向柱312、闸板301以及挡板72等各个配件的表面均涂覆有一层耐磨涂层,具体的,将经前述步骤所制得的等各个配件合金基质置于阴极电弧设备中,抽真空维持负压为6-7kPa,用Ar+粒子轰击前述配件表面进行溅射清洗后,采用钛铝合金靶和氮气进行沉积后冷却形成耐磨涂层,其中各个配件的负偏压为-120~-160V,沉积温度为390-410℃,形成具有的钛-铝-氮的耐磨涂层,耐磨涂层厚度为3-5μm,显著提高耐热、耐腐蚀和耐氧化的性能,使本发明适用范围更广。
其中,阴极电弧设备包括真空系统、阴极电弧蒸发源、偏压系统、供气系统、节流阀系统、加热系统、测温系统、工件转架系统、冷却水系统和控制系统,其均为现在设备。
需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
尽管结合优选实施方案具体展示和介绍了本发明,但所属领域的技术人员应该明白,在不脱离所附权利要求书所限定的本发明的精神和范围内,在形式上和细节上可以对本发明做出各种变化,均为本发明的保护范围。
Claims (7)
1.一种高气密性的消防闸阀,包括阀体、阀盖、闸板组件、阀杆以及手轮,所述阀盖通过螺栓安装在阀体顶部,所述阀体设置有同轴设置的进料口和出料口,所述进料口和出料口之间为供介质流通的流道,所述闸板组件设于流道内,所述流道的底部设有闸板槽,所述阀杆的下端从阀盖穿入阀体内并与闸板组件连接,所述阀杆的上端与手轮连接,定义介质流动的方向为左右,与介质流动方向水平垂直的方向为前后,其特征在于:所述闸板组件包括设置于阀体内的导向块以及设于导向块左右两侧的左闸板组件和右闸板组件,所述阀体内壁于导向块前后两侧设有限位条,所述导向块的前后两侧分别设有限位槽,所述限位条伸入于限位槽内,使导向块可沿限位条上下移动,所述导向块的上端向上凸起形成导向柱,所述导向柱设有导向槽,所述导向槽内设有内螺纹,所述阀杆的下端螺旋地设于导向槽内,所述阀盖上端设有延长套,所述导向柱穿过阀盖伸入延长套内,并随着导向块沿阀盖上下移动,所述手轮通过轴承可转动地设于延长套上端,所述阀盖与导向柱接触的一侧面由下至上依次设有密封刮块和密封填料,且所述密封刮块与导向柱接触的一面由上至下等间距地绕其周向设有多条环形凸起条,各个所述环形凸起条的截面呈三角形状。
2.根据权利要求1所述的一种高气密性的消防闸阀,其特征在于:所述导向块左右两侧面为楔形面,所述左闸板组件和右闸板组件均包括与各自对应楔形面平行设置的闸板,所述闸板至少通过一组弹性组件使其可相对导向块移动,所述闸板的周边与导向块之间设有限位密封组件,
所述闸板槽内设有弹性挡板组件,所述弹性挡板组件包括固定设于闸板槽底部的弹性部件和设于弹性部件上端的挡板,当弹性部件处于自由状态时,所述挡板的上表面与流道底部持平。
3.根据权利要求2所述的一种高气密性的消防闸阀,其特征在于:所述弹性组件包括设于闸板朝向导向块一侧面的凸柱,所述凸柱远离闸板的一端设有限位柱,所述导向块设有供凸柱插入的第一让位孔,所述第一让位孔底部设有供限位柱插入的第二让位孔,所述第一让位孔的直径大于第二让位孔的直径,所述第一让位孔内设有蝶形弹簧组,所述限位柱穿过蝶形弹簧组的内圈插入第二让位孔内,所述凸柱抵设于蝶形弹簧组上。
4.根据权利要求3所述的一种高气密性的消防闸阀,其特征在于:所述限位密封组件包括绕闸板周边设置的限位钩部和设于导向块上与限位钩部配合卡接的限位凸块,所述限位凸块的外表面套设有密封圈,当所述蝶形弹簧组件处于自由状态时,所述限位钩部与限位凸块抵接。
5.根据权利要求4所述的一种高气密性的消防闸阀,其特征在于:所述阀体、阀盖、导向块、导向柱、闸板以及挡板均包括按重量份数计的以下组分:碳1.3-1.6%,铬19-23%,钙0.5-1.2%,锰0.9-1.1%,硼0.2-0.5%,硅0.9-1.3%,硫0.01-0.04%,磷0.02-0.03%,钼3.0-4.0%,镍2.0-3.0%,铜1.0-1.5%,钒0.7-0.9%,钛0.9-1%,其余为铁和不可避免的杂质。
6.根据权利要求5所述的一种高气密性的消防闸阀,其特征在于:所述阀体、阀盖、导向块、导向柱、闸板以及挡板的表面均涂覆有一层耐磨涂层。
7.根据权利要求6所述的一种高气密性的消防闸阀,其特征在于:所述耐磨涂层采用以下工艺形成:将未组装的阀体、阀盖、导向块、导向柱、闸板以及挡板等配件置于阴极电弧设备中,抽真空维持负压为6-7kPa,用Ar+粒子轰击前述配件表面进行溅射清洗后,采用钛铝合金靶和氮气进行沉积后冷却形成耐磨涂层。
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