CN114060546B - 一种中腔内摆式快速启闭的闸阀 - Google Patents
一种中腔内摆式快速启闭的闸阀 Download PDFInfo
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Abstract
本发明公开了一种中腔内摆式快速启闭的闸阀,包括阀座、闸板、阀杆和转轮,通过转轮控制闸板的启闭,在所述转轮的侧边铰接助力手柄,在阀杆上设置有锁止套筒,助力手柄的翻折动作与锁止套筒联动,所述闸板顶部铰接,闸板一侧与连杆铰接,连杆的另一端铰接在螺母上,所述螺母旋装在阀杆下端的螺纹杆上,阀座的空腔内设置有楔形压紧块,所述闸板铰接端与滑块连接,所述滑块置于阀座的滑槽中,在滑槽内设置有压簧,本发明中助力手柄增大了力臂,锁止套筒可将转轮锁紧固定,避免误碰导致阀门动作,利用翻转动作代替传统的直线运动,有效地减小了阀座体积,便于施工安装,闸板闭合包括旋转闭合和推进压紧密封两个动作,保证密封效果。
Description
技术领域
本发明涉及阀门领域,具体地说是中腔内摆式快速启闭的闸阀。
背景技术
闸阀的启闭件是闸板,闸板的运动方向与流体方向相垂直,来控制阀门的全开和全关,广泛用于水利和油气管道等领域,方便灵活控制连接管路的启闭,传统闸阀的缺点包括外形尺寸较大,开启需要一定的空间,开闭时间长。结构较复杂。
公开号为CN110056665B公开了一种中腔内摆式快速启闭的闸阀,包括闸阀本体、闸阀盖、驱动阀杆和闸阀中腔,所述闸阀本体的上方设置有闸阀座,且闸阀座的内侧设置有限位活动槽,所述驱动阀杆贯穿闸阀盖,所述转轮的内侧中部设置有活动连接套,所述活动连接套的侧下端均匀分布有限位卡块,所述闸阀盖的下方设置有连接齿槽,所述第一活动闸板的右侧设置有第二活动闸板,所述第二活动闸板的侧面设置有柔性石墨密封垫片。该中腔内摆式快速启闭的闸阀,设置有进行同步平行摆动启闭的第一活动闸板和第二活动闸板,在连接齿槽的同步传动下,方便装置的快速启闭,同时活动连接套的限位卡块可以方便装置的灵活限位,提高装置的实用性。
上述方案存在的问题如下:一、活动把手不能回缩,非使用状态下,占用空间较大;二、活动连接套与限位卡块解除锁定的状态不能保持,必须向下按压活动扳手,才能解锁,影响操作;三、第一活动闸板和第二活动闸板交错,叠加的通槽作为通流口,其流通截面小,会产生阻力。
发明内容
本发明的目的是提供一种中腔内摆式快速启闭的闸阀,解决转轮操作费力的问题,以及避免碰撞或误操作导致转轮动作,能够快速启闭,并保证密封性。
为解决上述技术问题,本发明采用的技术方案为:
一种中腔内摆式快速启闭的闸阀,包括阀座、闸板、阀杆和转轮,闸板位于阀座内,闸板与阀杆联动,阀杆与转轮连接,通过转轮控制闸板的启闭。
在所述转轮的侧边铰接助力手柄,当助力手柄向外翻折展开时,力臂增加,从而用较小的外部作用力,即可控制转轮转动。当启动操作完成后,助力手柄围绕铰接点向内翻折,收起后不占用空间,结构紧凑。
在阀杆上设置有锁止套筒,锁止套筒与阀杆之间仅具有轴线方向的自由度,在阀座上设置有锁止销,锁止销与锁止套筒边缘卡槽配合,当锁止套筒边缘卡槽与锁止销咬合时,阀杆被限制转动,当锁止套筒边缘卡槽与锁止销脱离时,阀杆解除转动锁定。从而避免碰撞或误操作导致转轮动作。
为了简化操作步骤,将助力手柄的翻折动作与锁止套筒联动,本发明中,在锁止套筒内设置有复位弹簧,在所述锁止套筒的侧壁设置有压环,在转轮下方通过铰链连接摆杆,在助力手柄的铰接端设置凸轮,所述凸轮与摆杆端部贴合,摆杆的另一端抵住锁止套筒的压环。
凸轮压动摆杆,摆杆撬动锁止套筒的压环,使得锁止套筒移动,锁止套筒边缘卡槽与锁止销脱离,此时,摆杆对凸轮的作用力方向指向铰接点,具有位置自锁特性,锁止套筒与助力手柄的翻折动作联动,简化了操作步骤。
所述闸板顶部铰接,闸板一侧与连杆铰接,连杆的另一端铰接在螺母上,所述螺母旋装在阀杆下端的螺纹杆上,阀座的空腔内设置有楔形压紧块,所述闸板铰接端与滑块连接,所述滑块置于阀座的滑槽中,在滑槽内设置有压簧,压簧为滑块提供远离铰接点方向的弹簧力。
现有技术中闸阀的启闭动作是闸板在阀座内沿径向平移动作,为了保证通流面积,闸板的移动量大,造成的问题是闸板启闭操作耗时,同时,在开启状态需要有足够的空间来容纳闸板,因此阀座的体积大,不便于安装。本发明闸阀在开启状态,闸板会翻转至与通流口垂直的方向,从而减小了阀座的体积,并且开启闭合的运动路径短,有助于提高开启或闭合闸阀操作的速度。闸板在闭合过程中,分别实现翻转和向下直线运动两个动作,向下直线运动是为了利用闸板与楔形压紧块的相对运动,将闸板压紧,来保证密封效果。闸板在开启过程中,先向上直线运动,解除楔形压紧块限制后,完成翻转动作。
本发明的有益效果在于:
本发明中助力手柄增大了对阀杆的力臂,使得开启和关闭闸阀动作操作省力;开启或关闭闸阀动作完成后,将助力手柄收起,减少空间占用,锁止套筒将转轮锁紧固定,避免误碰导致阀门动作。
利用翻转动作代替传统的直线运动,有效地减小了阀座体积,节省成本,便于施工安装,闸板闭合包括旋转闭合和推进压紧密封两个动作,保证密封效果。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细地说明。
图1为本发明的助力手柄打开且闸板闭合状态的结构示意图。
图2为本发明的助力手柄闭合且闸板闭合状态的结构示意图。
图3为图1中A部的放大图。
图4为图1中A部在助力手柄闭合状态的结构示意图。
图5为本发明的助力手柄打开且闸板打开状态的结构示意图。
图6为本发明的助力手柄闭合且闸板打开状态的结构示意图。
图7为图1中B部的放大图。
图8为图1中B部在闸板打开状态的结构示意图
图中:1—阀座; 2—闸板; 3—阀杆; 31—限位环; 32—密封垫; 4—转轮; 5—助力手柄; 51—凸轮; 6—锁止套筒; 61—压环; 7—摆杆; 8—导向柱; 9—复位弹簧;10—锁止销; 11—螺母; 12—连杆; 13—滑块; 14—压簧; 15—密封圈; 16—楔形压紧块。
具体实施方式
如图1和3所示,一种中腔内摆式快速启闭的闸阀,包括阀座1、闸板2、阀杆3和转轮4,闸板2位于阀座1内,闸板2与阀杆3联动,阀杆3与转轮4连接,通过转轮4控制闸板的启闭。
在所述转轮4的侧边铰接助力手柄5,当助力手柄5向外翻折展开时,力臂增加,从而用较小的外部作用力,即可控制转轮4转动。当启动操作完成后,助力手柄5围绕铰接点向内翻折,状态如图2所示,收起后不占用空间,结构紧凑。
如图3所示,在阀杆3上设置有锁止套筒6,锁止套筒6与阀杆3之间仅具有轴线方向的自由度,在阀座1上设置有锁止销10,锁止销10与锁止套筒6边缘卡槽配合,当锁止套筒6边缘卡槽与锁止销10咬合时,阀杆3被限制转动,当锁止套筒6边缘卡槽与锁止销10脱离时,阀杆3解除转动锁定。从而避免碰撞或误操作导致转轮动作。
为了简化操作步骤,将助力手柄5的翻折动作与锁止套筒6联动,本发明中,在锁止套筒6内设置有复位弹簧9,在所述锁止套筒6的侧壁设置有压环61,在转轮4下方通过铰链连接摆杆7,在助力手柄5的铰接端设置凸轮51,所述凸轮51的下表面与摆杆7的一端上表面贴合接触,摆杆7的另一端的上表面与压环61的下表面贴合接触。
如图3所示,将助力手柄5向外侧翻折打开时,凸轮51压动摆杆7,摆杆7撬动锁止套筒6的压环61,使得锁止套筒6向上移动,锁止套筒6边缘卡槽与锁止销10脱离,阀杆3解除转动锁定。此时,摆杆7对凸轮51的作用力方向指向铰接点,具有位置自锁特性,当助力手柄5撤去翻转的外力时,阀杆3保持解锁状态。接下来,通过展开的助力手柄5来转动阀杆3,转动过程无需对助力手柄5提供下压力,只需要以阀杆3为轴心,转动助力手柄5即可完成启闭操作,当启闭操作完成后,将助力手柄向内翻折闭合时,凸轮51与摆杆7脱离,锁止套筒6在复位弹簧9的作用下,下移至锁止套筒6边缘卡槽与锁止销10咬合,阀杆3被限制转动。锁止套筒6与助力手柄5的翻折动作联动,简化操作,同时当助力手柄5展开时,锁止套筒6会保持解锁状态,而不需要提供外力来维持,符合常规的操作习惯。
为了避免锁止套筒6在被摆杆7拨动时运动发生卡顿,作为优选,在锁止套筒6内设置有导向柱8。
进一步,如图7所示,所述闸板2顶部与滑块13铰接,闸板2一侧与连杆12的一端铰接,连杆12的另一端铰接在螺母11上,所述螺母11旋装在阀杆3下端的螺纹杆上。
当通过转轮带动阀杆3转动时,阀杆3下端的螺纹会带动螺母11向上或向下运动,螺母11通过连杆12带动闸板2围绕铰接点旋转,从而完成闸板的开启或闭合动作。
现有技术中闸阀的启闭动作是闸板在阀座内沿径向平移动作,为了保证通流面积,闸板的移动量大,造成的问题是闸板启闭操作耗时,同时,在开启状态需要有足够的空间来容纳闸板,因此阀座的体积大,不便于安装。本发明闸阀在开启状态,闸板会翻转至与通流口垂直的方向,从而减小了阀座的体积,并且开启闭合的运动路径短,有助于提高开启或闭合闸阀操作的速度。
进一步,为了保证密封的可靠性,阀座1的空腔内设置有楔形压紧块16,所述滑块13置于阀座的滑槽中,在滑槽内设置有压簧14,压簧14为滑块13提供远离铰接点方向的弹簧力。
工作原理如下:阀门开启状态,如图8所示,在压簧14的作用下,滑块13位于上极限位,旋转阀杆,螺母11向下运动,带动闸板2向下翻转,直至闸板2与通流口贴合,继续旋转阀杆,螺母继续向下移动,因为闸板2的翻转自由度已被限制,闸板只能克服压簧14的弹簧力向下运动,进而闸板2下端抵住楔形压紧块16,并与之发生相对运动,楔形压紧块16将闸板2底端紧密压扣在通流口上,闸板上端在连杆12的推力作用下,保持与通流口的紧密压扣,状态如图7所示,从而保证了密封的可靠性。反之,当需要开启阀门时,反方向旋转阀杆,螺母11向上移动,在连杆12拉力和压簧14的弹簧力共同作用下,滑块13连同闸板2一并向上运动,直至滑块13移动至上极限位,滑块13停止移动,此时闸板2下端已脱开楔形压紧块16,当螺母11继续向上移动,闸板2开始围绕铰接点做旋转运动,直至全部打开,状态如图8所示。
闸板在闭合过程中,分别实现翻转和向下直线运动两个动作,向下直线运动是为了利用闸板与楔形压紧块16的相对运动,将闸板压紧,来保证密封效果。闸板在开启过程中,先向上直线运动,解除楔形压紧块16限制后,完成翻转动作。
作为优选,在闸板2与阀座1的贴合处设置有密封圈15,从而进一步保证密封的可靠性。
在闸板2的端部设置有倒角,倒角与楔形压紧块16配合,避免发生相对运动时发生卡顿。
以上公开的仅为本专利的具体实施例,但本专利并非局限于此,对于本领域的普通技术人员来说,在不脱离本发明原理的前提下,做出的变形应视为属于本发明保护范围。
Claims (4)
1.一种中腔内摆式快速启闭的闸阀,包括阀座(1)、闸板(2)、阀杆(3)和转轮(4),闸板(2)位于阀座(1)内,阀杆(3)与转轮(4)连接,通过转轮(4)控制闸板的启闭,其特征在于:在所述转轮(4)的侧边铰接助力手柄(5),在阀杆(3)上设置有锁止套筒(6),锁止套筒(6)与阀杆(3)之间仅具有轴线方向的自由度,在阀座(1)上设置有锁止销(10),锁止销(10)与锁止套筒(6)边缘卡槽配合,在锁止套筒(6)内设置有复位弹簧(9),在所述锁止套筒(6)的侧壁设置有压环(61),在转轮(4)下方通过铰链连接摆杆(7),在助力手柄(5)的铰接端设置凸轮(51),所述凸轮(51)的下表面与摆杆(7)的一端上表面贴合接触,摆杆(7)的另一端的上表面与压环(61)的下表面贴合接触,所述闸板(2)顶部与滑块(13)铰接,闸板(2)一侧与连杆(12)的一端铰接,连杆(12)的另一端铰接在螺母(11)上,所述螺母(11)旋装在阀杆(3)下端的螺纹杆上,阀座(1)的空腔内设置有楔形压紧块(16),所述滑块(13)置于阀座的滑槽中,在滑槽内设置有压簧(14),压簧(14)为滑块(13)提供远离铰接点方向的弹簧力。
2.根据权利要求1所述的中腔内摆式快速启闭的闸阀,其特征在于:在锁止套筒(6)内设置有导向柱(8)。
3.根据权利要求2所述的中腔内摆式快速启闭的闸阀,其特征在于:在闸板(2)与阀座(1)的贴合处设置有密封圈(15)。
4.根据权利要求3所述的中腔内摆式快速启闭的闸阀,其特征在于:在闸板(2)的端部设置有与楔形压紧块(16)配合的倒角。
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