WO2018218569A1 - 安全装置 - Google Patents

安全装置 Download PDF

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Publication number
WO2018218569A1
WO2018218569A1 PCT/CN2017/086761 CN2017086761W WO2018218569A1 WO 2018218569 A1 WO2018218569 A1 WO 2018218569A1 CN 2017086761 W CN2017086761 W CN 2017086761W WO 2018218569 A1 WO2018218569 A1 WO 2018218569A1
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WO
WIPO (PCT)
Prior art keywords
air hole
flow tube
safety device
main body
collar
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PCT/CN2017/086761
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English (en)
French (fr)
Inventor
白翼志
Original Assignee
白翼志
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Publication date
Application filed by 白翼志 filed Critical 白翼志
Priority to PCT/CN2017/086761 priority Critical patent/WO2018218569A1/zh
Publication of WO2018218569A1 publication Critical patent/WO2018218569A1/zh

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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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature

Definitions

  • a safety device that provides high temperature, knocking causes a part of the safety device to self-lock due to demagnetization (demagnetization) shedding, or self-locking by manually removing a part of the structure manually.
  • Valves are often used in industries such as industrial, residential, transportation, and oil and gas, power generation, wastewater treatment, and chemical manufacturing, and are widely used in industrial and agricultural production and in everyday life. It is also a device that controls the flow, flow, pressure, temperature, etc. of the flowing fluid medium, and is also a basic component in the pipeline (road) system.
  • the high-pressure cylinders store gas and oxygen cylinders, and need to be connected to the use equipment by installing appropriate valve fitting pipes, such as gas drums commonly used in restaurant kitchens, oxygen cylinders for medical oxygen supply for patients, or industrial nitrogen cylinders.
  • the present invention provides a practical safety device, which can prevent the fluid from being shut off in a real-time or manual operation in an accidental situation.
  • the present invention provides a safety device comprising: a main body including a first air hole and a second air hole, wherein the first air hole and the second air hole communicate with each other, the first air hole and a pipe system a flow tube having one end movable between the second air hole of the main body and the first air hole, the flow tube having a passage not axially extending through the flow tube, the flow tube having at least one pass on a circumferential side thereof a groove, and the at least one groove is in communication with the channel and the first air hole; a ring is sleeved on the circumference side of the flow tube, and the side of the ring abuts against the body; and an elastic member It is located in the first air hole and elastically abuts between the joint and the flow tube; either the body or the collar is a magnet and the other is a magnetized object, the body or the collar When the external force or the heated temperature reaches 80 ° C or more to achieve demagnetization (demagnetization), or the external force
  • the aforementioned safety device further includes the following technical features:
  • the flow tube includes a plurality of connecting portions, a through portion, and an occluding portion, the connecting portion extending toward the opposite direction of the main body, the through portion is movably disposed in the second air hole, and the at least one through slot is located
  • the insertion portion is located in the first air hole, and the diameter of the occlusion portion is larger than the diameter of the second air hole; the passage extends axially along the connection portion toward the through portion.
  • the flow tube is provided with a set of grooves along the circumferential side ring, and the sleeve is sleeved in the sleeve, and the sleeve is located between the set of joints and the wearing section.
  • the side of the flow tube is provided with a buckle groove, and a limit buckle is positioned on the buckle groove, and the buckle side is abutted against the collar, and the buckle groove is located at the set of the joint and the sleeve between.
  • the clogging portion of the flow tube has a protrusion extending from the second air hole toward the first air hole, and the elastic member is fixed at one end of the protrusion to the circumferential side of the protrusion.
  • the outer peripheral side of the occluding portion surrounds a first airtight ring, and the outer peripheral side of the puncturing portion surrounds a second airtight ring corresponding to the wall of the second air vent hole, and the safety device is in a locked state, the first The airtight ring is in close contact with the edge position of the second air hole toward the first air hole.
  • the outer peripheral side of the body extends outwardly around a non-circular outer ring portion.
  • the first air vent is provided with an internally threaded section oriented in the direction of the second air vent, the internal threaded section being for threadingly engaging a joint of the piping system.
  • Any one of the main body or the collar is a strong magnet of NdFeB material.
  • the safety device provided by the invention encounters high temperature and knocking, so that part of the structure of the safety device is self-locking due to demagnetization (demagnetization) falling off, or manually detaching part of the structure and self-locking, thereby achieving the state of cutting off the fluid flow.
  • Figure 1 is a schematic perspective view of the combination of the present invention.
  • Figure 2 is an exploded perspective view of the present invention.
  • Figure 3 is a schematic cross-sectional view of the combination of the present invention in a piping system.
  • Figure 4 is a schematic view of the fire encountered in the state of use of the present invention.
  • Fig. 5 is a schematic view showing the external force encountered in the state of use of the present invention.
  • a security device 1 including a main body 2 including a first air hole 21 and a second air hole 22, the first air hole 21 and the second The air holes 22 are connected to each other, and the first air holes 21 are connected to a joint 31 of a pipeline system 3; one flow tube 4 has one end movably disposed between the second air hole 22 of the main body 2 and the first air hole 21, The flow tube 4 has a passage 41 that is not axially penetrated through the flow tube 4.
  • the circumference of the flow tube 4 is provided with at least one through groove 42, and the at least one through groove 42 communicates with the passage 41 and the first air hole 21 (
  • six passages 42 penetrating the flow tube 4 are taken as an example, and the through groove 42 is a pipe wall penetrating the flow pipe 4);
  • a ring 5 is sleeved on the circumferential side of the flow pipe 4, and the sleeve The ring 5 is in contact with the main body 2 on one side; and an elastic member 6 is located in the first air hole 21 and elastically abuts between the joint 31 and the flow tube 4; the main body 2 or the collar 5
  • One is a magnet and the other is a magnetized object (in this embodiment, the collar is a magnet), so that the main body 2 and the collar 5 are opposite sides.
  • the normal state maintains abutting contact with each other, and the safety device 1 is unlocked. Therefore, the fluid can flow to the first air hole 21 and the through groove 42 to the channel 41 via the joint 31 of the pipe system 3, as shown by the arrow in FIG.
  • the opposite end of the channel 42 encloses the hose 32 of the tubing system 3.
  • the flow tube 4 is automatically pushed by the elastic force of the elastic member 6. Arrive, cause the flow tube 4 to be the first gas
  • the hole 21 is displaced toward the second air hole 22, and the outer hole end of the through groove 42 is blocked by the hole wall of the second air hole 22, so that the fluid cannot flow to the through groove 42 through the first air hole 21, and the safety device 1 Switched from the unlocked state to the locked state.
  • the figure shows that when the collar 5 is impacted or struck by an external force, the magnetic molecules inside the collar 5 vibrate, or the outer ring directly causes the collar 5 to be broken, and the elastic force of the elastic member 6 can also be automatically Pushing the flow tube 4, causing the flow tube 4 to be displaced from the first air hole 21 toward the second air hole 22, and the outer hole end of the through groove 42 is blocked by the hole wall of the second air hole 22, so that the fluid cannot pass through the first An air vent 21 flows to the through slot 42, and the safety device 1 is switched from the unlocked state to the locked state.
  • the safety device 1 of the present invention can also provide or external force separation away from the magnetic contact range, or the hose 32 can be improperly pulled to drive the flow tube 4, and its instantaneous force is sufficient to keep the two away from the magnetic contact range.
  • the elastic member 6 reaches the flow tube 4, the through groove 42 of the flow tube 4 is blocked by the second air hole 22, and the safety device 1 is in a locked state.
  • the moving collar 5 is moved toward the main body 2 and magnetically contacts, and the through groove 42 of the flow tube 4 is no longer closed by the second air hole 22, and is restored to be in an unlocked state.
  • the flow tube 4 includes a plurality of connecting portions 43, a through portion 44, and a blocking portion 45.
  • the connecting portion 43 extends toward the opposite direction of the main body 2, and the through portion 44 is movably disposed through the second air hole.
  • the venting portion 45 is disposed in the first air hole 21, and the dam portion 45 has a diameter larger than the diameter of the second air hole 22.
  • the passage 41 extends axially along the set of segments 43 toward the piercing section 44.
  • the flow tube 4 is provided with a set of grooves 46 along the circumferential side ring, and the sleeve 5 is sleeved on the sleeve 46, and the sleeve is grooved. 46 is located between the set of segments 43 and the piercing section 44.
  • a four-way side ring of the flow tube is provided with a buckle groove 47, and a limit buckle 48 (here, a c-type buckle is taken as an example) is positioned on the buckle groove 47 and the side of the limit buckle 48 is abutted against the
  • the collar 5 is located between the set of segments 43 and the sleeve 46.
  • a first airtight ring 451 is wrapped around the outer peripheral side of the blocking portion 45, and the outer peripheral side of the through portion 44 is wrapped around one of the holes of the second air hole 22.
  • the second airtight ring 441 is in a locked state, and the first airtight ring 451 is in close contact with the hole edge position of the second air hole 22 in the direction of the first air hole 21.
  • the blocking portion 45 of the flow tube 4 has a protrusion 452 extending from the second air hole 22 toward the first air hole 21, and one end of the elastic member 6 is fixed to the circumferential side of the protrusion 452.
  • the outer peripheral side of the main body 2 is extended outwardly with a non-circular outer ring portion 23 which provides a joint 31 for holding or holding the main body 2 to the piping system 3 using a hand tool.
  • the first air hole 21 is provided with an internally threaded section 24 facing the second air hole 22 for threadingly engaging the joint 31 of the piping system 3.
  • Any one of the main body 2 or the collar 5 is a neodymium iron boron strong magnet.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

一种安全装置（1），包括主体（2）、流通管（4）、套环（5）套固于该流通管（4）周侧，且该套环（5）一侧抵顶接触于该主体（2），以及弹性件（6）弹性抵顶管路系统（3）的接头（31）与该流通管（4）之间；该主体（2）或该套环（5）任一者为磁铁而另一者为受磁吸作用对象，该主体（2）或该套环（5）任一者受外力或受热温度80℃以上达到退磁或消磁，或外力分离两者远离磁吸接触范围，则该流通管（4）受该弹性件（6）的弹力推抵，且该流通管（4）受该主体（2）封闭，以致流体无法流经该流通管（4），而该安全装置（1）则由解锁状态切换到闭锁状态。

Description

安全装置 技术领域
一种安全装置，其提供高温、敲击导致安全装置部份结构因退磁(消磁)脱落而自锁，或人工手动拔除部份结构而自锁。
背景技术
阀经常用于工业、住宅、交通以及石油和天然气、发电、污水处理和化工制造等行业，并且广泛用于工农业生产和日常生活中。更是控制流动的流体介质的流量、流向、压力、温度等的装置，也是管道(路)系统中基本的组件。另外，高压钢瓶存放瓦斯、氧气瓶，需要另外通过安装适当的阀门配合管路连接至使用器具，例如餐厅厨房常用的瓦斯桶、医疗上供给病人氧气的氧气瓶或工业用的氮气钢瓶等。
不论是运用在何种产业用途甚至居家环境之中，一但遭遇到流量(流体压力)异常或是遭遇例如地震、火灾等意外灾害发生时，甚至连带发生停电状况，上述设施器具则需要依靠管路的阀体自动遮断或是仰赖人工来手动切断等功能。例如发明人先前所申请所核准I290610「安全防灾装置」发明专利、M530909「流体安全遮断器」新型专利、M527053「流体遮断安全装置」新型专利、M310982「高压气体接头安全防护结构」新型专利等。
技术问题
为了解决现有技术中的技术问题，本发明提供一具实用性的安全装置，而能阻绝流体于意外情况下可以实时自行或人工操作，达到切断流动状态。
技术解决方案
本发明提供一种安全装置，其包括：一主体，其包括有一第一气孔与一第二气孔，该第一气孔与该第二气孔彼此相连通，该第一气孔与一管路系统的一接头组接；一流通管，其一端活动穿设于该主体的第二气孔与第一气孔间，该流通管具有未轴向贯穿流通管的一通道，该流通管的周侧设有至少一通槽，且该至少一通槽与该通道、该第一气孔相连通；一套环，其套固于该流通管周侧，且该套环一侧抵顶接触于该主体；以及一弹性件，其位于该第一气孔内且弹性抵顶该接头与该流通管之间；该主体或该套环任一者为磁铁而另一者为受磁吸作用对象，该主体或该套环任一者受外力或受热温度80℃以上达到退磁(消磁)，或外力分离两者远离磁吸接触范围，则该流通管受该弹性件的弹力推抵，且该至少一通槽的外侧孔端受到该第二气孔的孔壁阻绝封闭，以致流体无法经该第一气孔流向该至少一通槽，而该安全装置由解锁状态切换到闭锁状态。
前述安全装置进一步包括有下列技术特征：
该流通管包括有一组接段、一穿设段、一闭塞部，该组接段朝该主体的反方向延伸，该穿设段活动穿设于该第二气孔内，且该至少一通槽位于该穿设段，该闭塞部位于该第一气孔内，且该闭塞部直径尺寸大于第二气孔直径尺寸；该通道沿该组接段朝向该穿设段轴向延伸。该流通管沿周侧环设有一套槽，而该套环套设于该套槽，且该套槽位于该组接段与该穿设段之间。该流通管周侧环设有一扣槽，另以一限位扣定位于该扣槽并以该限位扣一侧抵顶于该套环，且该扣槽位于该组接段与该套槽之间。该流通管的闭塞部具有由第二气孔朝向第一气孔方向延伸的一凸柱，而该弹性件一端圈套固定于该凸柱周侧。该闭塞部的外周侧环绕套固一第一气密环，而该穿设段外周侧环绕套固对应该第二气孔孔壁的一第二气密环，该安全装置闭锁状态，该第一气密环紧密接触于该第二气孔朝向该第一气孔方向的孔缘位置。
该主体外周侧向外环绕延伸有非圆形的一外环部。
该第一气孔设置有朝向该第二气孔方向的一内螺纹区段，该内螺纹区段系用以螺纹接合该管路系统的接头。
该主体或该套环任一者为钕铁硼材质强力磁铁。
有益效果
本发明提供的安全装置，遭遇高温、敲击导致安全装置部份结构因退磁(消磁)脱落而自锁，或人工手动拔除部份结构而自锁，从而达到切断流体流动状态。
附图说明
图1是本发明组合立体示意图。
图2是本发明分解立体示意图。
图3是本发明组合于管路系统剖面示意图。
图4是本发明使用状态遭遇火灾示意图。
图5是本发明使用状态遭遇外力示意图。
【主要组件符号说明】
安全装置1；
主体2；
第一气孔21；
第二气孔22；
外环部23；
内螺纹区段24；
管路系统3；
接头31；
软管32；
流通管4；
通道41；
通槽42；
组接段43；
穿设段44；
第二气密环441；
闭塞部45；
第一气密环451；
凸柱452；
套槽46；
扣槽47；
限位扣48；
套环5；
弹性件6。
本发明的实施方式
请参阅图式图1～3所示，图中揭示一种安全装置1，其包括：一主体2，其包括有一第一气孔21与一第二气孔22，该第一气孔21与该第二气孔22彼此相连通，该第一气孔21与一管路系统3的一接头31组接；一流通管4，其一端活动穿设于该主体2的第二气孔22与第一气孔21间，该流通管4具有未轴向贯穿流通管4的一通道41，该流通管4的周侧设有至少一通槽42，且该至少一通槽42与该通道41、该第一气孔21相连通(在此以六个贯穿流通管4的通槽42为例，且该通槽42为贯穿流通管4的管壁)；一套环5，其套固于该流通管4周侧，且该套环5一侧抵顶接触于该主体2；以及一弹性件6，其位于该第一气孔21内且弹性抵顶该接头31与该流通管4之间；该主体2或该套环5任一者为磁铁而另一者为受磁吸作用对象(本实施例以该套环为磁体为例)，如此得以让该主体2与该套环5两者以相对的一侧并常态保持相互抵顶接触，且为安全装置1解锁状态因此流体得以经由管路系统3的接头31朝向第一气孔21、通槽42流向通道41如图3箭头所示，该流通管4设有通槽42的相反端套接管路系统3的软管32。
关于本发明安全装置使用方式则请参阅图4所示，所处环境发生火灾，导致套环5受热温度80℃以上达到退磁(消磁)，则该流通管4受该弹性件6的弹力自动推抵，促使流通管4由第一气 孔21朝向第二气孔22位移，且该通槽42的外侧孔端受到该第二气孔22的孔壁阻绝封闭，以致流体无法经该第一气孔21流向该通槽42，而该安全装置1由解锁状态切换到闭锁状态。
请参阅图5所示，图式中揭示套环5受外力撞击或敲击时，导致套环5内部磁分子振动，或受外力直接导致套环5破碎，同样可由该弹性件6的弹力自动推抵该流通管4，促使流通管4由第一气孔21朝向第二气孔22位移，且该通槽42的外侧孔端受到该第二气孔22的孔壁阻绝封闭，以致流体无法经该第一气孔21流向该通槽42，而该安全装置1由解锁状态切换到闭锁状态。
另外，本发明安全装置1亦可提供或外力分离两者远离磁吸接触范围，或软管32受到不当拉扯带动流通管4，且其瞬间作用力足够使两者远离磁吸接触范围，同样可以达到上述弹性件6弹抵流通管4，而流通管4的通槽42受到第二气孔22的阻绝封闭，该安全装置1则形成闭锁状态。而复归时则移动套环5朝向主体2并磁吸接触，则流通管4的通槽42不再受第二气孔22封闭，得以恢复流通呈解锁状态。
进一步详细说明本发明安全装置各组件结构以及组件组成。其中，该流通管4包括有一组接段43、一穿设段44、一闭塞部45，该组接段43朝主体2的反方向延伸，该穿设段44活动穿设于该第二气孔22内，且该通槽42系环绕排列于该穿设段44，该闭塞部45位于该第一气孔21内，且该闭塞部45直径尺寸大于第二气孔22直径尺寸。该通道41沿该组接段43朝向该穿设段44轴向延伸。
关于套环5，其通过其他组件固定于流通管4的结构特征在于：该流通管4沿周侧环设有一套槽46，而该套环5套设于该套槽46，且该套槽46位于该组接段43与该穿设段44之间。该流通管4周侧环设有一扣槽47，另以一限位扣48(在此，以c型扣为例)定位于该扣槽47并以该限位扣48一侧抵顶于该套环5，且该扣槽47位于该组接段43与该套槽46之间。
为了提升安全装置1气密效果，其中于该闭塞部45的外周侧环绕套固一第一气密环451，而该穿设段44外周侧环绕套固对应该第二气孔22孔壁之一第二气密环441，该安全装置1闭锁状态，该第一气密环451紧密接触于该第二气孔22朝向该第一气孔21方向的孔缘位置。
另外，该流通管4的闭塞部45具有由第二气孔22朝向第一气孔21方向延伸的一凸柱452，而该弹性件6一端圈套固定于该凸柱452周侧。
此外，该主体2外周侧向外环绕延伸有非圆形的一外环部23，该外环部23提供使用手工具夹持或握持将主体2结合于管路系统3的接头31。该第一气孔21设置有朝向该第二气孔22方向的一内螺纹区段24，该内螺纹区段24用以螺纹接合该管路系统3的接头31。
该主体2或该套环5任一者为钕铁硼材质强力磁铁。

Claims (10)

  1. 一种安全装置，其特征在于，包括：
    一主体，其包括有一第一气孔与一第二气孔，该第一气孔与该第二气孔彼此相连通，该第一气孔与一管路系统的一接头组接；
    一流通管，其一端活动穿设于该主体的第二气孔与第一气孔间，该流通管具有未轴向贯穿流通管的一通道，该流通管的周侧设有至少一通槽，且该至少一通槽与该通道、该第一气孔相连通；
    一套环，其套固于该流通管周侧，且该套环一侧抵顶接触于该主体；
    以及一弹性件，其位于该第一气孔内且弹性抵顶该接头与该流通管之间；
    该主体或该套环任一者为磁铁而另一者为受磁吸作用对象，该主体或该套环任一者受外力或受热温度80℃以上达到退磁(消磁)，或外力分离两者远离磁吸接触范围，则该流通管受该弹性件的弹力推抵，且该至少一通槽的外侧孔端受到该第二气孔的孔壁阻绝封闭，以致流体无法经该第一气孔流向该至少一通槽，而该安全装置由解锁状态切换到闭锁状态。
  2. 如权利要求1所述的安全装置，其特征在于，该流通管包括有一组接段、一穿设段、一闭塞部，该组接段朝该主体的反方向延伸，该穿设段活动穿设于该第二气孔内，且该至少一通槽位于该穿设段，该闭塞部位于该第一气孔内，且该闭塞部直径尺寸大于第二气孔直径尺寸；该通道沿该组接段朝向该穿设段轴向延伸。
  3. 如权利要求2所述的安全装置，其特征在于，该流通管沿周侧环设有一套槽，而该套环套设于该套槽，且该套槽位于该组接段与该穿设段之间。
  4. 如权利要求3所述的安全装置，其特征在于，该流通管周侧环设有一扣槽，另以一限位扣定位于该扣槽并以该限位扣一侧抵顶于该套环，且该扣槽位于该组接段与该套槽之间。
  5. 如权利要求4所述的安全装置，其特征在于，该流通管的闭塞部具有由第二气孔朝向第一气孔方向延伸的一凸柱，而该弹性件一端圈套固定于该凸柱周侧。
  6. 如权利要求5所述的安全装置，其特征在于，该闭塞部的外周侧环绕套固一第一气密环，而该穿设段外周侧环绕套固对应该第二气孔孔壁的一第二气密环，该安全装置闭锁状态，该第一气密环紧密接触于该第二气孔朝向该第一气孔方向的孔缘位置。
  7. 如权利要求1至权利要求5中任一项所述的安全装置，其特征在于，该主体外周侧向外环绕延伸有非圆形的一外环部。
  8. 如权利要求7所述的安全装置，其特征在于，该第一气孔设置有朝向该第二气孔方向的一内螺纹区段，该内螺纹区段用以螺纹接合该管路系统的接头。
  9. 如权利要求1所述的安全装置，其特征在于，该主体或该套环任一者为钕铁硼材质强力磁 铁。
  10. 如权利要求8所述的安全装置，其特征在于，该主体或该套环任一者为钕铁硼材质强力磁铁。
PCT/CN2017/086761 2017-06-01 2017-06-01 安全装置 WO2018218569A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000337539A (ja) * 1999-05-25 2000-12-05 Tokyo Flow Meter Kenkyusho:Kk 逆止弁
TWM247749U (en) * 2003-12-02 2004-10-21 Yi-Jr Bai Safety anti-leaking structure for pneumatic tube fitting
CN101639126A (zh) * 2009-08-28 2010-02-03 吕炳权 双密封式防泄漏永磁驱动阀
CN202790762U (zh) * 2012-08-16 2013-03-13 廖新桃 燃气自闭阀
CN203549047U (zh) * 2013-09-10 2014-04-16 许道泽 一种无球芯燃气阀
CN205064890U (zh) * 2015-08-25 2016-03-02 玉环万事达铜业有限公司 一种煤气阀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000337539A (ja) * 1999-05-25 2000-12-05 Tokyo Flow Meter Kenkyusho:Kk 逆止弁
TWM247749U (en) * 2003-12-02 2004-10-21 Yi-Jr Bai Safety anti-leaking structure for pneumatic tube fitting
CN101639126A (zh) * 2009-08-28 2010-02-03 吕炳权 双密封式防泄漏永磁驱动阀
CN202790762U (zh) * 2012-08-16 2013-03-13 廖新桃 燃气自闭阀
CN203549047U (zh) * 2013-09-10 2014-04-16 许道泽 一种无球芯燃气阀
CN205064890U (zh) * 2015-08-25 2016-03-02 玉环万事达铜业有限公司 一种煤气阀

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