CN111237483A - 一种蝶阀 - Google Patents
一种蝶阀 Download PDFInfo
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- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
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- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
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Abstract
本发明公开了一种蝶阀,包括阀体,所述阀体内设有通道,所述阀体的侧面转动连接有一端伸入通道内的套杆和轴杆;所述套杆和轴杆在伸入通道内的一端之间固定安装有阀板,所述阀板内沿套杆的轴向设有安装槽,所述安装槽的开口处固定安装有盖板,所述阀板和盖板内设有同轴的泄压孔,所述安装槽内沿套杆的轴向滑动连接有用于控制泄压孔通断的闸板,所述套杆内设有芯轴,所述芯轴的下端伸入安装槽内与所述闸板沿轴向固定连接且沿圆周方向转动连接,所述芯轴的上端伸出套杆且安装有手柄,所述套杆的侧壁上设有水平槽和轴向槽;芯轴的外侧面设有凸起;阀体上设有定位组件,所述定位组件用于给手柄定位;该蝶阀有预泄压功能,降低阀板开启时的力矩。
Description
技术领域
本发明属于管道阀门技术领域,具体的说是涉及一种蝶阀。
背景技术
蝶阀又叫翻板阀,是一种结构简单的调节阀,在管道上主要起切断和节流作用。蝶阀启闭件是一个圆盘形的翻板,在阀体内绕其自身的轴线旋转,从而达到启闭或调节的目的。当蝶阀用于大口径管道时,特别是在高压的工况下,管道内的介质对阀板产生的压力很大,在开启时,阀杆所承受的扭矩很大,需要阀门开启时的扭矩也很大,配套的驱动装置的输出力矩相应也很大,致使阀门的结构庞大;当阀体由关闭至打开状态时,由于阀体内的压强较大,工作人员在扳动把手时,依然会有较大的扭矩,难以打开,给工作人员带来较大的工作难度。另外,在阀板呈关闭状态时,阀板一侧的压力会大于另一侧的压力,如果压力大的一侧对阀板受力不均,容易造成阀板损坏翻转,造成蝶阀泄漏。
发明内容
本发明的目的是提供一种蝶阀,其不仅结构简单,而且有预泄压功能,降低阀板开启时的力矩。
为实现上述目的,本发明提供如下技术方案:
一种蝶阀,包括阀体,所述阀体内设有通道,所述阀体的侧面转动连接有一端伸入通道内的套杆和轴杆,所述套杆和轴杆同轴设置;所述套杆和轴杆在伸入通道内的一端之间固定安装有用于控制通道通断的阀板,所述阀板内沿套杆的轴向设有安装槽,所述安装槽的开口处固定安装有盖板,所述阀板和盖板内设有同轴的泄压孔,所述安装槽内沿套杆的轴向滑动连接有用于控制泄压孔通断的闸板,所述套杆内设有芯轴,所述芯轴的下端伸入安装槽内与所述闸板沿轴向固定连接且沿圆周方向转动连接,所述芯轴的上端伸出套杆且安装有手柄,所述套杆的侧壁上沿圆周方向设有水平槽、沿轴向设有与水平槽连通的轴向槽;所述芯轴的外侧面设有伸入水平槽或者轴向槽内的凸起;所述凸起位于水平槽内时,闸板将泄压孔关闭,所述凸起位于轴向槽的上端时,闸板将泄压孔打开;所述阀体上设有定位组件,所述定位组件用于给手柄定位。
进一步的技术方案中,所述阀体的外侧固定安装有套接在轴杆下端的限位块,所述内设有呈90°夹角的扇形限位槽,所述轴杆的下端设有位于所述扇形限位槽内的限位凸柱,在限位凸柱位于扇形限位槽的一端时,阀板与通道的法线垂直,阀板将通道关闭;在限位凸柱位于扇形限位槽的另一端时,阀板与通道的法线平行,阀板将通道打开。
进一步的技术方案中,所述阀板内沿垂直套杆的轴线方向对称设有与安装槽连通的左滑槽和右滑槽;所述左滑槽内滑动连接有左滑块,所述左滑块上设有伸出阀板的左锁杆,所述右滑槽内滑动连接有右滑块,所述右滑块上设有伸出阀板的右锁杆;所述阀体在通道的内侧壁上对称设有左定位孔和右定位孔,在阀板关闭时,所述左锁杆伸入左定位孔内、右锁杆伸入右定位孔内;
所述闸板的左侧设有伸入左滑槽内的左凸块、右侧设有伸入右滑槽内的右凸块;所述左滑块上设有左一斜面,所述左凸块上设有与左一斜面配合的左二斜面;所述右滑块上设有右一斜面,所述右凸块上设有与右一斜面配合的右二斜面;所述左滑槽的左端和左滑块之间设有用于迫使左滑块向右运动的左弹簧,所述右滑槽的右端和右滑块之间设有用于迫使右滑块向左运动的右弹簧;在闸板向下运动时,左凸块在左二斜面和左一斜面的作用下向左运动,右凸块在右二斜面和右一斜面的作用下向右运动。
进一步的技术方案中,所述闸板的上端设有倒T字形滑槽,所述芯轴的下端设有伸入倒T字形滑槽内的凸肩。
进一步的技术方案中,所述阀体的侧面设有凸柱,所述凸柱内在套杆的外侧设有密封槽,所述密封槽内设有套接在套杆上的密封圈,所述密封槽的上端开口处固定安装有套接在套杆上的螺堵,所述螺堵用于防止密封圈脱离密封槽。
进一步的技术方案中,所述定位组件包括定位盘、定位杆、定位弹簧,所述定位盘固定安装在螺堵的上端,所述定位杆铰接在手柄上,所述定位弹簧位于手柄和定位杆之间,所述定位弹簧用于迫使定位杆的一端插入定位盘外圆周侧面的定位槽内。
有益效果
与现有技术相比,本发明的技术方案具有以下优点:
(1)在阀板关闭时,所述左锁杆伸入左定位孔内、右锁杆伸入右定位孔内将阀板锁死,防止阀板翻转损坏,也分担了套杆和轴杆受到的切应力,具有保护套杆和轴杆的功能;
(2)设置有闸板,在阀板旋转之前先使闸板开启泄压,可以减小操作力矩,使调节更加方便。
附图说明
图1为本发明的剖视图;
图2为图1中A-A方向的剖视图;
图3为图1中B-B方向的剖视图;
图4为图1中C-C方向的剖视图;
图5为本发明中套杆的局部结构示意图;
图6为蝶板处于关闭位置时凸起在水平槽中的位置示意图;
图7为蝶板处于开启位置时凸起在轴向槽中的位置示意图。
具体实施方式
请参阅图1-7所示,一种蝶阀,包括阀体1,所述阀体1内设有通道111,所述阀体1的侧面转动连接有一端伸入通道111内的套杆3和轴杆7,所述套杆3和轴杆7同轴设置;所述套杆3和轴杆7在伸入通道111内的一端之间固定安装有用于控制通道111通断的阀板2,所述阀板2内沿套杆3的轴向设有安装槽22,所述安装槽22的开口处固定安装有盖板23,所述阀板2和盖板23内设有同轴的泄压孔21,所述安装槽22内沿套杆3的轴向滑动连接有用于控制泄压孔21通断的闸板8,所述套杆3内设有芯轴4,所述闸板8的上端设有倒T字形滑槽81,所述芯轴4的下端伸入安装槽22内且设有伸入倒T字形滑槽81内的凸肩43,所述芯轴4的上端伸出套杆3且安装有手柄5,所述套杆3的侧壁上沿圆周方向设有水平槽311、沿轴向设有与水平槽311连通的轴向槽312;所述芯轴4的外侧面设有伸入水平槽311或者轴向槽312内的凸起41;所述凸起41位于水平槽311内时,闸板8将泄压孔21关闭,所述凸起41位于轴向槽312的上端时,闸板8将泄压孔21打开;所述阀体1上设有定位组件,所述定位组件用于给手柄5定位。
所述阀体1的外侧固定安装有套接在轴杆7下端的限位块12,所述内设有呈90°夹角的扇形限位槽121,所述轴杆7的下端设有位于所述扇形限位槽121内的限位凸柱71,在限位凸柱71位于扇形限位槽121的一端时,阀板2与通道111的法线垂直,阀板2将通道111关闭;在限位凸柱71位于扇形限位槽121的另一端时,阀板2与通道111的法线平行,阀板2将通道111打开。
所述阀板2内沿垂直套杆3的轴线方向对称设有与安装槽22连通的左滑槽25和右滑槽26;所述左滑槽25内滑动连接有左滑块10a,所述左滑块10a上设有伸出阀板2的左锁杆11a,所述右滑槽26内滑动连接有右滑块10b,所述右滑块10b上设有伸出阀板2的右锁杆11b;所述阀体1在通道111的内侧壁上对称设有左定位孔101和右定位孔102,在阀板2关闭时,所述左锁杆11a伸入左定位孔101内、右锁杆11b伸入右定位孔102内;所述闸板8的左侧设有伸入左滑槽25内的左凸块83、右侧设有伸入右滑槽26内的右凸块84;所述左滑块10a上设有左一斜面,所述左凸块83上设有与左一斜面配合的左二斜面;所述右滑块10b上设有右一斜面,所述右凸块84上设有与右一斜面配合的右二斜面;所述左滑槽25的左端和左滑块10a之间设有用于迫使左滑块10a向右运动的左弹簧13a,所述右滑槽26的右端和右滑块10b之间设有用于迫使右滑块10b向左运动的右弹簧13b;在闸板8向下运动时,左凸块83在左二斜面和左一斜面的作用下向左运动,右凸块84在右二斜面和右一斜面的作用下向右运动。
所述阀体1的侧面设有凸柱114,所述凸柱114内在套杆3的外侧设有密封槽115,所述密封槽115内设有套接在套杆3上的密封圈116,所述密封槽115的上端开口处固定安装有套接在套杆3上的螺堵117,所述螺堵117用于防止密封圈116脱离密封槽115。所述定位组件包括定位盘6、定位杆119、定位弹簧120,所述定位盘6固定安装在螺堵117的上端,所述定位杆119铰接在手柄5上,所述定位弹簧120位于手柄5和定位杆119之间,所述定位弹簧120用于迫使定位杆119的一端插入定位盘6外圆周侧面的定位槽(现有技术图中均未示出)内。
如图1所示,当蝶阀处于关闭位置时,凸起41处于水平槽311中,手柄5的下端卡到定位盘6的定位槽内,使芯轴4不会旋转且处于最下端位置,进而使闸板8关闭泄压孔21,由于闸板8处于最下端位置,通过左二斜面与左一斜面的配合推动左滑块10a带动左锁杆11a插入左定位孔101中,同时通过右二斜面与右一斜面的配合推动右滑块10b带动右锁杆11b插入右定位孔102中,由此将阀板2锁死,阀板2不能翻转。
当需要打开蝶阀时,向上捏定位杆119,使定位杆119的下端脱离定位盘6的定位槽,然后旋转手柄5,手柄5带动芯轴4旋转,当芯轴4上的凸起41由水平槽311进入到轴向槽312中时,左滑块10a在左弹簧13a的作用下向右运动,使得左锁杆11a离开左定位孔101,右滑块10b在右弹簧13b的作用下向左运动,使得右锁杆11b离开右定位孔102,从而完成阀板2解锁,并且在左滑块10a向右运动时,通过左一斜面与左二斜面的配合,以及右滑块10b向左运动时,通过右一斜面与右二斜面的配合,将闸板8推起向上运动,打开泄压孔21进行泄压,此时凸起41位于轴向槽312的最上端,然后继续旋转手柄5,会带动芯轴4旋转,芯轴4的旋转再通过凸起41带动套杆3转动,进而带动阀板2转动,将蝶阀开启。
当需要关闭蝶阀时,向上捏定位杆119,使定位杆119的下端脱离定位盘6的定位槽,然后回转手柄5,手柄5带动芯轴4旋转,芯轴4带动套杆3旋转,当轴杆7上的限位凸柱71与扇形限位槽121的一端触碰后,阀板2到位与管路垂直,阀板2关闭,然后向下按压手柄5,使芯轴4向下运动推动闸板8向下,闸板8向下运动时,左凸块83在左二斜面和左一斜面的作用下向左运动压缩左弹簧13a,左锁杆11a伸入左定位孔101中,右凸块84在右二斜面和右一斜面的作用下向右运动压缩右弹簧13b,右锁杆11b伸入右定位孔102中;直到凸起41进入下水平槽311,闸板8下降到底将泄压孔21密封,左锁杆11a和右锁杆11b将阀板2锁住,然后旋转手柄5使凸起41进入水平槽311定位,松开定位杆119,使定位杆119的下端卡到定位盘6的定位槽内,完成蝶阀的关闭。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (6)
1.一种蝶阀,包括阀体,所述阀体内设有通道,所述阀体的侧面转动连接有一端伸入通道内的套杆和轴杆,所述套杆和轴杆同轴设置;所述套杆和轴杆在伸入通道内的一端之间固定安装有用于控制通道通断的阀板,所述阀板内沿套杆的轴向设有安装槽,所述安装槽的开口处固定安装有盖板,所述阀板和盖板内设有同轴的泄压孔,所述安装槽内沿套杆的轴向滑动连接有用于控制泄压孔通断的闸板,所述套杆内设有芯轴,所述芯轴的下端伸入安装槽内与所述闸板沿轴向固定连接且沿圆周方向转动连接,所述芯轴的上端伸出套杆且安装有手柄,所述套杆的侧壁上沿圆周方向设有水平槽、沿轴向设有与水平槽连通的轴向槽;所述芯轴的外侧面设有伸入水平槽或者轴向槽内的凸起;所述凸起位于水平槽内时,闸板将泄压孔关闭,所述凸起位于轴向槽的上端时,闸板将泄压孔打开;所述阀体上设有定位组件,所述定位组件用于给手柄定位。
2.根据权利要求1所述的蝶阀,其特征在于,所述阀体的外侧固定安装有套接在轴杆下端的限位块,所述内设有呈90°夹角的扇形限位槽,所述轴杆的下端设有位于所述扇形限位槽内的限位凸柱,在限位凸柱位于扇形限位槽的一端时,阀板与通道的法线垂直,阀板将通道关闭;在限位凸柱位于扇形限位槽的另一端时,阀板与通道的法线平行,阀板将通道打开。
3.根据权利要求1所述的蝶阀,其特征在于,所述阀板内沿垂直套杆的轴线方向对称设有与安装槽连通的左滑槽和右滑槽;所述左滑槽内滑动连接有左滑块,所述左滑块上设有伸出阀板的左锁杆,所述右滑槽内滑动连接有右滑块,所述右滑块上设有伸出阀板的右锁杆;所述阀体在通道的内侧壁上对称设有左定位孔和右定位孔,在阀板关闭时,所述左锁杆伸入左定位孔内、右锁杆伸入右定位孔内;
所述闸板的左侧设有伸入左滑槽内的左凸块、右侧设有伸入右滑槽内的右凸块;所述左滑块上设有左一斜面,所述左凸块上设有与左一斜面配合的左二斜面;所述右滑块上设有右一斜面,所述右凸块上设有与右一斜面配合的右二斜面;所述左滑槽的左端和左滑块之间设有用于迫使左滑块向右运动的左弹簧,所述右滑槽的右端和右滑块之间设有用于迫使右滑块向左运动的右弹簧;在闸板向下运动时,左凸块在左二斜面和左一斜面的作用下向左运动,右凸块在右二斜面和右一斜面的作用下向右运动。
4.根据权利要求1所述的蝶阀,其特征在于,所述闸板的上端设有倒T字形滑槽,所述芯轴的下端设有伸入倒T字形滑槽内的凸肩。
5.根据权利要求1所述的蝶阀,其特征在于,所述阀体的侧面设有凸柱,所述凸柱内在套杆的外侧设有密封槽,所述密封槽内设有套接在套杆上的密封圈,所述密封槽的上端开口处固定安装有套接在套杆上的螺堵,所述螺堵用于防止密封圈脱离密封槽。
6.根据权利要求5所述的蝶阀,其特征在于,所述定位组件包括定位盘、定位杆、定位弹簧,所述定位盘固定安装在螺堵的上端,所述定位杆铰接在手柄上,所述定位弹簧位于手柄和定位杆之间,所述定位弹簧用于迫使定位杆的一端插入定位盘外圆周侧面的定位槽内。
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