CN114635987B - 一种自动下压密封式截止阀 - Google Patents

一种自动下压密封式截止阀 Download PDF

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CN114635987B
CN114635987B CN202210253061.3A CN202210253061A CN114635987B CN 114635987 B CN114635987 B CN 114635987B CN 202210253061 A CN202210253061 A CN 202210253061A CN 114635987 B CN114635987 B CN 114635987B
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valve body
conical
valve
rod
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CN114635987A (zh
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韩欣霖
董家旭
刘吉雪
魏苏晓
王若希
刘祎
韩雪峰
周维海
周忠
陈挺
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Jiangsu Jiangyuan Machinery Co ltd
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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
    • 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • 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
    • 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
    • F16K1/32—Details
    • 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
    • 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • 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
    • 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • 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
    • 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • 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
    • 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
    • F16K1/32—Details
    • F16K1/48—Attaching valve members to screw-spindles
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • 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
    • 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
    • F16K3/0218—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 only one sealing face
    • 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
    • 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
    • F16K3/0227—Packings
    • 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
    • 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
    • F16K3/0254—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 being operated by particular means
    • 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
    • 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
    • F16K3/0281—Guillotine or blade-type valves, e.g. no passage through the valve member
    • 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
    • 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
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • 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
    • 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
    • F16K3/30—Details
    • F16K3/316—Guiding of the slide
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement

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Abstract

本发明涉及石油阀门领域，更具体的说是一种自动下压密封式截止阀。一种自动下压密封式截止阀，包括阀体、隔板、环形座和锥形阀芯，所述阀体的中部设置有隔板，隔板上设置有环形座，锥形阀芯设置在环形座的上侧。还包括橡胶环，锥形阀芯的下侧设置有橡胶环，锥形阀芯通过橡胶环压在环形座上。还包括密封环I和中轴，中轴的下端固定连接在锥形阀芯上，中轴竖向滑动连接在阀体的上部，中轴与阀体的连接位置设置有密封环I。还包括顶杆，顶杆固定连接在中轴的上部。通过锥形阀芯压在环形座上，密封性好。

Description

一种自动下压密封式截止阀
技术领域
本发明涉及石油阀门领域，更具体的说是一种自动下压密封式截止阀。
背景技术
截止阀的启闭件是塞形的阀瓣，密封上面呈平面或海锥面，阀瓣沿阀座的中心线作直线运动。阀杆的运动形式，也有升降旋转杆式可用于控制空气、水、蒸汽等各种类型流体的流动。因此，这种类型的截流截止阀阀门非常适合作为切断或调节以及节流用。由于该类阀门的阀杆开启或关闭行程相对较短，而且具有非常可靠的切断功能。传统的截止阀的阀芯一般是平的，密封性不如锥形阀芯好。
发明内容
为克服现有技术的不足，本发明提供一种自动下压密封式截止阀，其有益效果为通过锥形阀芯压在环形座上，密封性好。
一种自动下压密封式截止阀，包括阀体、隔板、环形座和锥形阀芯，所述阀体的中部设置有隔板，隔板上设置有环形座，锥形阀芯设置在环形座的上侧。
一种自动下压密封式截止阀还包括橡胶环，锥形阀芯的下侧设置有橡胶环，锥形阀芯通过橡胶环压在环形座上。
一种自动下压密封式截止阀还包括密封环I和中轴，中轴的下端固定连接在锥形阀芯上，中轴竖向滑动连接在阀体的上部，中轴与阀体的连接位置设置有密封环I。
一种自动下压密封式截止阀还包括顶杆，顶杆固定连接在中轴的上部。
附图说明
下面结合附图和具体实施方法对本发明做进一步详细的说明。
图1为一种自动下压密封式截止阀的结构示意图一；
图2为一种自动下压密封式截止阀的结构示意图二；
图3为一种自动下压密封式截止阀的结构示意图三；
图4为阀体和隔板的结构示意图一；
图5为阀体和隔板的结构示意图二；
图6为锥形阀芯和中轴的结构示意图；
图7为锥形阀芯的结构示意图；
图8为圆门的结构示意图一；
图9为圆门的结构示意图二；
图中：阀体101；密封环I102；伸缩杆103；拨叉104；L形架105；压螺杆106；轨道107；密封圈108；出口管109；进口管110；
隔板201；环形座202；斜板203；密封环II204；
锥形阀芯301；橡胶环302；固定轴303；圆片304；圆杆305；
中轴401；顶杆402；连杆403；闸板404；条孔405；锥形压盖406；
圆门501；凸座502；方柱503；铰接杆504。
具体实施方式
如图1-9所示，这个例子解决了锥形形状的锥形阀芯301压在环形座202 的上侧可以提升阀门的密封效果的问题。
由于自动下压密封式截止阀包括阀体101、隔板201、环形座202和锥形阀芯301，隔板201设置在阀体101的中部，环形座202设置在隔板201上，锥形阀芯301位于环形座202的上侧，进而通过锥形形状的锥形阀芯301压在环形座202的上侧可以提升阀门的密封效果。
如图1-9所示，这个例子解决了通过橡胶环302进一步提升了环形座202 与锥形阀芯301之间的密封效果的问题。
由于自动下压密封式截止阀还包括橡胶环302，橡胶环302设置在锥形阀芯 301的下侧，锥形阀芯301上的橡胶环302压在环形座202上，进而通过橡胶环302进一步提升了环形座202与锥形阀芯301之间的密封效果。
如图1-9所示，这个例子解决了通过中轴401的升降控制锥形阀芯301的升降的问题。
通过自动下压密封式截止阀还包括密封环I102和中轴401，锥形阀芯301 的上侧设置有中轴401，中轴401竖向滑动连接在阀体101的上端位置，密封环 I102设置在中轴401与阀体101的连接位置，进而通过中轴401的升降可以控制锥形阀芯301的升降，进而控制阀门的开闭。
如图1-9所示，这个例子解决了通过顶杆402更加容易控制中轴401升降的问题。
由于自动下压密封式截止阀还包括顶杆402，中轴401的上部固定连接有顶杆402，通过顶杆402更加容易控制中轴401升降，进而控制锥形阀芯301的升降。
如图1-9所示，这个例子解决了通过锥形压盖406上的多个条孔405使得石油添加剂缓慢释放的问题。
由于自动下压密封式截止阀还包括条孔405和锥形压盖406，锥形压盖406 竖向滑动连接在中轴401上，锥形压盖406设置在锥形阀芯301的上方，多个条孔405呈环形设置在锥形压盖406上，中轴401上设置有压缩弹簧I，压缩弹簧I位于阀体101与锥形压盖406之间，锥形压盖406和锥形阀芯301之间可以放置缓慢释放的石油添加剂，然后锥形压盖406压在石油添加剂上，通过锥形压盖406上的多个条孔405使得石油添加剂缓慢释放，压缩弹簧I给锥形压盖406向下的力，使得锥形压盖406压在石油添加剂上，并且压缩弹簧I给锥形阀芯301向下的力，使得锥形阀芯301有下压的趋势，进而使得锥形阀芯301 容易压在环形座202上将阀门密封。
如图1-9所示，这个例子解决了通过进口管110进入石油，石油从出口管 109出来的问题。
由于自动下压密封式截止阀还包括出口管109和进口管110，阀体101的左侧下部设置有进口管110，阀体101的右侧上部设置有出口管109，出口管109 和进口管110分别位于隔板201的上下两侧。通过进口管110进入石油，石油通过环形座202从隔板201的下侧流动至隔板201的上侧，然后石油从出口管 109出来。
如图1-9所示，这个例子解决了阻挡进口管110液体进入时的冲击的问题。
由于自动下压密封式截止阀还包括斜板203，斜板203设置在隔板201的下侧右部，进而斜板203挡在进口管110的右方向上，阻挡进口管110液体进入时的冲击。
如图1-9所示，这个例子解决了进一步使得锥形阀芯301容易压在环形座 202上将阀门密封的问题。
由于自动下压密封式截止阀还包括密封环II204、圆片304和圆杆305，两个圆杆305均固定连接在锥形阀芯301的右侧，每个圆杆305均竖向滑动连接在隔板201上，两个圆片304分别固定连接在两个圆杆305的下端，两个圆杆 305上都套接有压缩弹簧II，压缩弹簧II设置在隔板201的下侧，两个圆杆305 与隔板201的滑动连接位置均设置有密封环II204。两个圆杆305上的压缩弹簧 II给两个圆杆305向下的力，使得锥形阀芯301有向下移动的趋势，进而进一步使得锥形阀芯301容易压在环形座202上将阀门密封。
如图1-9所示，这个例子解决了进一步提升阀门密闭的可靠性的问题。
由于自动下压密封式截止阀还包括密封圈108、连杆403和闸板404，闸板 404竖向滑动连接在阀体101的上侧，闸板404与阀体101的滑动连接位置设置有密封圈108，连杆403的两端分别固定连接在闸板404和中轴401上，闸板 404能够挡在出口管109的左侧，进而中轴401上升时带动锥形阀芯301上移，将环形座202处打开，然后中轴401上升时同时可以带动连杆403和闸板404 向上移动，进而将出口管109的左侧位置也打开，中轴401下降时环形座202 处封闭，然后出口管109的左侧位置被闸板404封闭，进而通过环形座202处的封闭和出口管109的左侧的封闭进一步提升阀门密闭的可靠性。
如图1-9所示，这个例子解决了顶杆402升降时驱动中轴401和锥形阀芯 301升降的问题。
由于自动下压密封式截止阀还包括伸缩杆103和拨叉104，阀体101的上侧固定连接有伸缩杆103，伸缩杆103的上部设置有拨叉104，顶杆402穿过拨叉 104。伸缩杆103伸缩时带动拨叉104升降，进而拨叉104带动顶杆402升降，进而顶杆402升降时驱动中轴401和锥形阀芯301升降。
所述自动下压密封式截止阀还包括L形架105、压螺杆106和轨道107，阀体101的上侧设置有轨道107，L形架105的下端滑动连接在轨道107上，L形架105的上部螺纹连接有压螺杆106，压螺杆106能够压在顶杆402的上侧。
如图1-9所示，这个例子解决了使得锥形阀芯301大力下压至环形座202 上的问题。
需要使得锥形阀芯301大力下压对抗压力较大的石油时，可以使得L形架 105在轨道107上滑动，进而将压螺杆106移动至顶杆402的上侧，然后向下旋动压螺杆106压在顶杆402的上侧，进而使得锥形阀芯301大力下压至环形座 202上。
所述自动下压密封式截止阀还包括固定轴303、圆门501、凸座502、方柱503和铰接杆504，阀体101的内部下侧固定连接有凸座502，凸座502上横向滑动连接有方柱503，圆门501固定在方柱503的左端，两个圆片304的下端之间固定连接有固定轴303，铰接杆504的一端转动连接在固定轴303上，铰接杆 504的另一端铰接在方柱503的右端，圆门501位于进口管110的右侧。
如图1-9所示，这个例子解决了使得进口管110的右侧也被密封的问题。
锥形阀芯301下压时带动两个圆杆305、两个圆片304和固定轴303向下移动，进而固定轴303向上移动时通过铰接杆504向左推动方柱503，使得方柱 503沿着凸座502向左移动，进而使得圆门501压在进口管110的右侧，进而使得进口管110的右侧也被密封，进一步提升升阀门密闭的可靠性。

Claims (3)

1.一种自动下压密封式截止阀，包括阀体(101)、隔板(201)、环形座(202)和锥形阀芯(301)，其特征在于：所述阀体(101)的中部设置有隔板(201)，隔板(201)上设置有环形座(202)，锥形阀芯(301)设置在环形座(202)的上侧；
还包括橡胶环(302)，锥形阀芯(301)的下侧设置有橡胶环(302)，锥形阀芯(301)通过橡胶环(302)压在环形座(202)上；
还包括密封环I(102)和中轴(401)，中轴(401)的下端固定连接在锥形阀芯(301)上，中轴(401)竖向滑动连接在阀体(101)的上部，中轴(401)与阀体(101)的连接位置设置有密封环I(102)；
还包括顶杆(402)，顶杆(402)固定连接在中轴(401)的上部；
还包括条孔(405)和锥形压盖(406)，锥形压盖(406)的中心竖向滑动连接在中轴(401)上，锥形压盖(406)位于锥形阀芯(301)的上方，锥形压盖(406)上环形设置有多个条孔(405)；
还包括出口管(109)和进口管(110)，阀体(101)的右侧上部设置有出口管(109)，阀体(101)的左侧下部设置有进口管(110)，出口管(109)和进口管(110)分别位于隔板(201)的上下两侧；
还包括斜板(203)，隔板(201)的下侧右部设置有斜板(203)；
还包括密封环II(204)、圆片(304)和圆杆(305)，两个圆杆(305)的上端均固定连接在锥形阀芯(301)的右侧，两个圆杆(305)均竖向滑动连接在隔板(201)上，每个圆杆(305)的下端均固定连接有圆片(304)，每个圆杆(305)上均设置有压缩弹簧I，压缩弹簧I位于隔板(201)的下侧，两个圆杆(305)与隔板(201)的滑动连接位置均设置有密封环II(204)；
还包括密封圈(108)、连杆(403)和闸板(404)，闸板(404)竖向滑动连接在阀体(101)的上侧右端，闸板(404)与阀体(101)的滑动连接位置设置有密封圈(108)，连杆(403)的一端固定连接在闸板(404)的上端，连杆(403)的另一端固定连接在中轴(401)上，闸板(404)挡在出口管(109)的左侧；
还包括伸缩杆(103)和拨叉(104)，阀体(101)的上侧固定连接有伸缩杆(103)，伸缩杆(103)的上部设置有拨叉(104)，顶杆(402)穿过拨叉(104)。
2.根据权利要求1所述的一种自动下压密封式截止阀，其特征在于：所述自动下压密封式截止阀还包括L形架(105)、压螺杆(106)和轨道(107)，阀体(101)的上侧设置有轨道(107)，L形架(105)的下端滑动连接在轨道(107)上，L形架(105)的上部螺纹连接有压螺杆(106)，压螺杆(106)能够压在顶杆(402)的上侧。
3.根据权利要求1所述的一种自动下压密封式截止阀，其特征在于：所述自动下压密封式截止阀还包括固定轴(303)、圆门(501)、凸座(502)、方柱(503)和铰接杆(504)，阀体(101)的内部下侧固定连接有凸座(502)，凸座(502)上横向滑动连接有方柱(503)，圆门(501)固定在方柱(503)的左端，两个圆片(304)的下端之间固定连接有固定轴(303)，铰接杆(504)的一端转动连接在固定轴(303)上，铰接杆(504)的另一端铰接在方柱(503)的右端，圆门(501)位于进口管(110)的右侧。
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