WO2014101318A1 - 一种碳弧气刨枪的气阀机构 - Google Patents
一种碳弧气刨枪的气阀机构 Download PDFInfo
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- WO2014101318A1 WO2014101318A1 PCT/CN2013/070209 CN2013070209W WO2014101318A1 WO 2014101318 A1 WO2014101318 A1 WO 2014101318A1 CN 2013070209 W CN2013070209 W CN 2013070209W WO 2014101318 A1 WO2014101318 A1 WO 2014101318A1
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- valve
- air
- valve core
- core cavity
- air outlet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/013—Arc cutting, gouging, scarfing or desurfacing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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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
- 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
- F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
Definitions
- the invention relates to an arc cutting tool, in particular to a gas guiding structure of a carbon arc gouging gun. Background technique
- the carbon arc gouging gun is a tool for cutting workpieces with electric arc and compressed air. It is often used to open U-shaped grooves and quilting roots for various steel workpieces.
- the structure of the existing general carbon arc gouging gun is as shown in Figs. 1 to 4, which has an insulating handle 2, and the front end of the insulating handle is connected with a carbon holding clamp 1 and is inside the chuck 8 of the lower jaw of the carbon holding clamp.
- An air storage chamber is arranged, and a gas guiding hole 7 communicating with the air storage chamber and parallel with the axial direction of the clamping carbon holding is opened on the side of the chuck 8 , and a pressure handle type manual air valve 4 is installed in the insulating handle, and the air valve is installed
- the central axis of the valve chamber 42 is perpendicular to the central axis of the insulating handle 2.
- the valve chamber 42 is provided with a valve core rod 5 which is reciprocable along the axial direction of the valve chamber.
- the two ends of the valve core rod 5 pass through the insulating handle 2, and the valve core rod 5
- the upper annular air guiding groove 52 is connected with the air inlet hole 41 and the air outlet hole 43 on both sides of the valve cavity, and a truncated cone valve plug section 51 for closing the air holes on both sides of the valve cavity is provided. Since the air valve is disposed in the insulating handle, and the valve of the valve is operated by the valve core rod at both ends, in order to ensure the convenience and comfort of the hand switch operation, the diameter of the insulating handle section at the valve installation position cannot be too large. It must be suitable for hand grip, so the axial length of the valve housing and the length of the valve stem are limited.
- the diameters of the inlet and outlet holes on the central sides of the valve chamber are fixed.
- the truncated cone plug section of the valve stem must ensure sufficient length to completely close the air holes on both sides of the valve cavity.
- the gas valve is opened, due to the limitation of the length of the valve stem and the axial length of the valve housing, the truncated cone plug segment of the valve stem cannot completely exit the airway position of the valve chamber, so the ring of the valve stem
- the air guiding groove can only partially connect with the air passages on both sides of the valve cavity, thereby reducing the conduction amount of the airflow, resulting in poor airflow due to insufficient airflow, which seriously affects the use of the gouging gun. And product processing quality.
- the object of the present invention is to improve the above-mentioned drawbacks of the existing carbon arc gouging gun, and to provide a technical improvement to ensure the operation of the carbon arc gouging gun without changing the outer dimensions of the existing carbon arc gouging gas valve.
- the technical solution of the present invention is a gas valve mechanism of a carbon arc gouging gun with a smooth air flow and no flow reduction.
- the valve mechanism of the carbon arc gouging gun has a valve housing and a valve.
- a pressure lever type manual control valve composed of a cover and a valve stem
- the valve housing is provided with a valve core cavity penetrating through the two ends, a hollow valve cover is connected to one end of the valve core cavity, and a central portion of the valve core cavity is in the shape of a truncated cone.
- An air inlet hole and an air outlet hole are respectively defined in the valve housings on both sides of the truncated cone-shaped cavity, and the air inlet hole and the air outlet hole are respectively connected to the air inlet pipe and the air outlet pipe, and the air inlet pipe is connected to the external air source pipe and the power wire
- the middle portion of the valve core rod is provided with a ring air guiding groove which is connected with the air inlet hole and the air outlet hole on both sides of the valve core cavity, and a truncated conical valve plug segment which closes the valve core cavity and has a truncated cone shaped cavity.
- the upper and lower parts of the valve stem are respectively provided with the inside of the valve cover a seal ring that cooperates with the inner wall of the lower portion of the spool chamber, the spool rod reciprocates axially along the spool chamber, and the valve housing and the intake and outlet nozzles are mounted in the hollow insulating handle of the gouging gun And the insulating handle is disposed at both ends of the valve rod, the front end of the insulating handle is connected with a carbon holding clamp, and a gas storage chamber connected to the air outlet is disposed in the chuck of the lower jaw of the carbon holding clamp An air guiding hole communicating with the air storage chamber and parallel to the axial direction of the clamping carbon holding is opened on the side of the chuck, and the upper edge portion and the lower edge portion of the air inlet hole on one side of the valve core cavity are respectively along the inner wall of the valve core cavity An air inlet groove extending through the air inlet hole is extended in a circumferential direction, and an upper edge portion and a lower edge portion of the air
- the diameter of the intake groove of the inlet groove is the diameter of the outlet groove
- the width of the outlet groove is the diameter of the outlet hole.
- the intake groove and the outlet groove are both half-moon grooves
- the utility model has the beneficial effects that: the inner air wall of the valve core cavity subtly opens the air guiding groove for extending the air inlet hole and the air outlet hole of the valve body, thereby greatly enhancing the air guiding amount of the air valve, thereby realizing the volume of the valve body without changing
- the utility model fully satisfies the gas consumption and airflow pressure of the carbon arc gouging gun without affecting the comfort and opening and closing comfort of the manual operation valve, thereby ensuring the processing quality of the product, thereby successfully solving the long-term pressure-controlled hand control gas.
- the valve air flow is small, an insurmountable problem.
- Figure 1 is a schematic view of the overall structure of the present invention.
- Fig. 2 is a cross-sectional structural view showing the closed state of the pressure-operated manual valve of the conventional carbon arc gouging gun.
- Fig. 3 is a schematic cross-sectional structural view showing the state of the pressure-operated gas valve of the conventional carbon arc gouging gun.
- Figure 4 is a schematic cross-sectional view of Figure 3.
- FIG. 5 is a schematic cross-sectional structural view of a pressure-operated hand-operated gas valve of a carbon arc gouging gun of the present invention.
- a gas valve mechanism of a carbon arc gouging gun has a pressure bar type manual control valve composed of a valve housing 4, a valve cover 13 and a valve core rod 5, and the valve housing 4 is provided with a valve core penetrating both ends
- the cavity 42 and one end of the valve core cavity 42 are screwed with a hollow type valve cover 13 having a truncated cone shape in the middle of the valve core cavity, and an air inlet hole 41 is respectively formed in the valve housing on both sides of the truncated cone shaped cavity body and
- the air outlet hole 43, the air inlet hole 41 and the air outlet hole 43 are respectively connected to the air inlet pipe 3 and the air outlet pipe 6, and the air inlet pipe 3 is connected to the external air source pipe 11 and the power source wire 10.
- the valve housing 4 of the present embodiment is integrally formed with the intake manifold 3 and the outlet nozzle 6.
- a ring air guiding groove 52 is formed on the middle portion of the valve core rod 5 to engage with the air inlet hole 41 and the air outlet hole 43 on both sides of the valve core cavity, and a truncated conical shape for closing the valve body cavity to cut the conical cavity
- the valve plug section 51, the upper and lower parts of the valve plug rod 5 are respectively provided with a sealing ring 12 which cooperates with the inner wall of the valve cover 13 and the inner wall of the lower part of the valve core cavity 42, and the valve core rod 5 can reciprocate axially along the valve core cavity.
- valve housing 4 and the intake nozzle 3 and the outlet nozzle 6 are mounted in the hollow insulating handle 2 of the gouging gun, and the valve Both ends of the core rod 5 pass through the side wall of the insulating handle 2, and the front end of the insulating handle is connected with the clamp 1 of the carbon holder 9, and is disposed in the chuck 8 of the lower jaw of the carbon holding clamp and the outlet pipe 6 a gas storage chamber is connected to the side of the collet 8 , and an air guiding hole 7 communicating with the air storage chamber and parallel to the axial direction of the clamping carbon is opened, and an upper edge portion of the air inlet hole 41 on one side of the valve core cavity is The lower edge portion is respectively milled in the circumferential direction of the inner wall of the valve core cavity with a half-moon shaped intake groove 411 penetrating the intake hole 41, and the upper edge portion and the lower edge portion of the air outlet hole 43 on the other side of the valve core chamber are respectively A half moon-shaped air outlet groove 431 penetrating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Arc Welding In General (AREA)
- Lift Valve (AREA)
Abstract
一种碳弧气刨枪的气阀机构,具有由阀壳体(4)、阀盖(13)及阀芯杆(5)构成的压杆式手控气阀,在阀芯腔(42)两侧的进气孔(41)、出气孔(43)的上缘部与下缘部分别沿阀芯腔内壁圆周方向开设有进气半月形凹槽(411)和出气半月形凹槽(431)。上述气阀在阀芯腔内壁开设了延接阀体进气孔和出气孔的半月形导气槽,大大增强了气阀的导气量,从而实现了在不改变阀体体积、不影响手控操作气阀启闭舒适性的情况下,完全满足碳弧气刨枪的用气量和气流压力,保证了产品加工质量。
Description
一种碳弧气刨枪的气阀机构 技术领域
本发明涉及电弧切割工具, 特别是一种碳弧气刨枪的导气结构件。 背景技术
碳弧气刨枪是一种利用电弧和压缩空气对工件进行刨削的工具, 常用 于对各类钢制工件开 U 形坡口和悍缝清根。 现有一般碳弧气刨枪的结构 是, 如附图 1〜4, 它具有绝缘手柄 2, 绝缘手柄前端连接有碳捧夹钳 1, 并 在碳捧夹钳下钳部的夹头 8 内设有贮气腔, 夹头 8侧面开设有与贮气腔连 通并与夹持碳捧轴向相平行的导气孔 7, 绝缘手柄内安装有压柄式手控气阀 4, 该气阀的阀腔 42中心轴线与绝缘手柄 2中心轴线相垂直, 阀腔 42内安 装有可沿阀腔轴向往复运动的阀芯杆 5, 阀芯杆 5两端穿出绝缘手柄 2, 阀 芯杆 5 上开设有与阀腔两侧的进气孔 41、 出气孔 43 相衔接的环圈导气槽 52 , 同时设有封闭阀腔两侧气孔的截锥形阀塞段 51。 由于气阀设置在绝缘 手柄内, 并以手握阀芯杆两端操控气阀的开关, 为了保证手握开关操作的 方便、 舒适性, 处于气阀安装位的绝缘手柄段的直径不能过大, 必须适宜 手握, 因而, 气阀壳体的轴向长度和阀芯杆的长度就受到了限制。 而位于 气阀阀腔中部两侧的进、 出气孔的直径是固定的, 气阀关闭时, 阀芯杆的 截锥形阀塞段必须保证有足够的长度完全封闭住阀腔两侧的气孔, 而当气 阀开启时, 由于受阀芯杆长度和气阀壳体轴向长度的限制, 阀芯杆的截锥 形阀塞段不能完全退出阀腔的气道位置, 因此阀芯杆的环圈导气槽只能部 分与阀腔两侧的气道相衔接, 从而减少了气流的导通量, 造成因气流不足 使气刨枪刨削时排屑不畅而严重影响气刨枪使用效果和产品加工质量。 为 了改善上述气阀导流面积不足造成气流量小的问题, 许多设计者采用加大 阀腔两侧的进出气孔直径来扩大气流传导空间, 然而, 扩大进出气孔直径
的余地很小, 稍大就会造成阀芯杆的截锥形阀塞段封闭不住气孔而漏气。 因此, 压柄式手控气阀气流量小成了长期以来难以克服的难题。
发明内容
本发明的目的是, 为克服现有碳弧气刨枪的上述弊病, 进行技术改进, 从而提供一种在不改变现有碳弧气刨枪气阀外形尺寸而保证碳弧气刨枪操 作方便舒适的情况下, 能实现气流通畅、 不减流量的碳弧气刨枪的气阀机 本发明的技术解决方案是: 一种碳弧气刨枪的气阀机构, 具有由阀壳 体、 阀盖及阀芯杆构成的压杆式手控气阀, 所述阀壳体设有贯通两端的阀 芯腔, 阀芯腔的一端连接有中空阀盖, 阀芯腔中部呈截圆锥体形, 在截圆 锥体形腔体两侧的阀壳体上分别开设有进气孔和出气孔, 所述进气孔和出 气孔分别连接进气接管和出气接管, 进气接管连接外接气源管和电源导 线, 阀芯杆中段上开设有与阀芯腔两侧的进气孔、 出气孔相衔接的环圈导 气槽, 还设有封闭阀芯腔截圆锥体形腔体的截圆锥形阀塞段, 阀芯杆上下 部分别设有与阀盖内壁和阀芯腔下部内壁相配合的密封圈, 所述阀芯杆可 沿阀芯腔轴向往复运动, 所述阀壳体及进气接管和出气接管安装于气刨枪 的中空绝缘手柄内, 而阀芯杆两端穿出绝缘手柄, 所述绝缘手柄前端连接 有碳捧夹钳, 并在碳捧夹钳下钳部的夹头内设有与所述出气接管相连接的 贮气腔, 夹头侧面开设有与贮气腔连通并与夹持碳捧轴向相平行的导气 孔, 所述阀芯腔一侧的进气孔的上缘部与下缘部分别沿阀芯腔内壁圆周方 向延接有与进气孔相贯通的进气凹槽, 所述阀芯腔另一侧的出气孔的上缘 部与下缘部分别沿阀芯腔内壁圆周方向延接有与出气孔相贯通的出气凹 槽。
作为优选,所述进气凹槽的宽度 进气孔的直径, 出气凹槽的宽度 出 气孔的直径。
作为优选,所述进气凹槽与出气凹槽均为半月形凹槽
本发明的有益效果是: 在阀芯腔内壁巧妙地开设了延接阀体进气孔和 出气孔的导气凹槽, 大大增强了气阀的导气量, 从而实现了在不改变阀体 体积、 不影响手控操作气阀启闭舒适性的情况下, 完全满足碳弧气刨枪的 用气量和气流压力, 保证了产品加工质量, 从而, 成功地解决了长期以来 压柄式手控气阀气流量小这一难以克服的难题。
附图说明
图 1为本发明总体结构示意图。
图 2为现有碳弧气刨枪的压杆式手控气阀关闭状态剖视结构示意图。 图 3为现有碳弧气刨枪的压杆式手控气阀开启状态剖视结构示意图。 图 4为图 3的横截面结构示意图。
图 5为本发明碳弧气刨枪的压杆式手控气阀的横截面结构示意图。
具体实例方式
下面结合附图以实施例对本发明作进一歩说明。
一种碳弧气刨枪的气阀机构, 具有由阀壳体 4、 阀盖 13及阀芯杆 5构 成的压杆式手控气阀, 所述阀壳体 4设有贯通两端的阀芯腔 42, 阀芯腔 42 的一端通过螺纹连接有中空型的阀盖 13, 阀芯腔中部呈截圆锥体形, 在截 圆锥体形腔体两侧的阀壳体上分别开设有进气孔 41和出气孔 43, 所述进气 孔 41和出气孔 43分别连接进气接管 3和出气接管 6, 进气接管 3连接外接 气源管 11和电源导线 10。 本实施例的阀壳体 4与所述进气接管 3和出气接 管 6制成一体。 阀芯杆 5 中段上开设有可与阀芯腔两侧的进气孔 41、 出气 孔 43相衔接的环圈导气槽 52, 还设有封闭阀芯腔截圆锥体形腔体的截圆锥 形阀塞段 51, 阀芯杆 5上下部分别设有与阀盖 13 内壁和阀芯腔 42下部内 壁相配合的密封圈 12, 所述阀芯杆 5 可沿阀芯腔轴向往复运动, 所述阀壳 体 4及进气接管 3和出气接管 6安装于气刨枪的中空绝缘手柄 2内, 而阀
芯杆 5两端穿出绝缘手柄 2侧壁, 所述绝缘手柄前端连接有碳捧 9的夹钳 1, 并在碳捧夹钳下钳部的夹头 8 内设有与所述出气接管 6 相连接的贮气 腔, 夹头 8侧面开设有与贮气腔连通并与夹持碳捧轴向相平行的导气孔 7, 所述阀芯腔一侧的进气孔 41 的上缘部与下缘部分别沿阀芯腔内壁圆周方向 铣有与进气孔 41 相贯通的半月形进气凹槽 411, 所述阀芯腔另一侧的出气 孔 43 的上缘部与下缘部分别沿阀芯腔内壁圆周方向铣有与出气孔 43 相贯 通的半月形出气凹槽 431。 所述进气凹槽 411 的宽度 进气孔 41 的直径, 出气凹槽 431的宽度 出气孔 43的直径。
Claims
1.一种碳弧气刨枪的气阀机构, 具有由阀壳体 (4)、 阀盖 (13) 及阀芯杆 (5) 构成的压杆式手控气阀, 所述阀壳体 (4) 设 有贯通两端的阀芯腔 (42), 阀芯腔 (42) 的一端连接有中空型的阀 盖 (13), 阀芯腔中部呈截圆锥体形, 在截圆锥体形腔体两侧的阀壳 体上分别开设有进气孔 (41) 和出气孔 (43), 所述进气孔 (41) 和 出气孔 (43) 分别连接进气接管 (3) 和出气接管 (6), 进气接管
(3) 连接外接气源管 (11) 和电源导线 (10), 阀芯杆 (5) 中段上 开设有可与阀芯腔两侧的进气孔 (41)、 出气孔 (43) 相衔接的环圈 导气槽 (52), 还设有封闭阀芯腔截圆锥体形腔体的截圆锥形阀塞段
(51), 阀芯杆 (5) 上下部分别设有与阀盖 (13) 内壁和阀芯腔
(42) 下部内壁相配合的密封圈 (12), 所述阀芯杆 (5) 可沿阀芯 腔轴向往复运动, 所述阀壳体 (4) 及进气接管 (3) 和出气接管
(6) 安装于气刨枪的中空绝缘手柄 (2) 内, 而阀芯杆 (5) 两端穿 出绝缘手柄 (2) 侧壁, 所述绝缘手柄前端连接有碳捧夹钳 (1), 并 在碳捧夹钳下钳部的夹头 (8) 内设有与所述出气接管 (6) 相连接 的贮气腔, 夹头 (8) 侧面开设有与贮气腔连通并与夹持碳捧轴向相 平行的导气孔 (7), 其特征在于所述阀芯腔一侧的进气孔 (41) 的 上缘部与下缘部分别沿阀芯腔内壁圆周方向延接有与进气孔 (41) 相贯通的进气凹槽 (411), 所述阀芯腔另一侧的出气孔 (43) 的上 缘部与下缘部分别沿阀芯腔内壁圆周方向延接有与出气孔 (43) 相 贯通的出气凹槽 (431)。
2.按权利要求 1 所述的一种碳弧气刨枪的气阀机构, 其特征在 于所述进气凹槽 (411) 的宽度 进气孔 (41) 的直径, 出气凹槽
(431) 的宽度 出气孔 (43) 的直径。
3. 按权利要求 1或 2所述的一种碳弧气刨枪的气阀机构, 其特 征在于所述进气凹槽 (411) 与出气凹槽 (431) 均为半月形凹槽。
4. 按权利要求 1所述的一种碳弧气刨枪的气阀机构, 其特征在 于所述阀壳体 (4) 与所述进气接管 (3) 和出气接管 (6) 制成一 体。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210564723.5 | 2012-12-24 | ||
CN201210564723.5A CN103008856B (zh) | 2012-12-24 | 2012-12-24 | 一种碳弧气刨枪的气阀机构 |
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Publication Number | Publication Date |
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WO2014101318A1 true WO2014101318A1 (zh) | 2014-07-03 |
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PCT/CN2013/070209 WO2014101318A1 (zh) | 2012-12-24 | 2013-01-08 | 一种碳弧气刨枪的气阀机构 |
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WO (1) | WO2014101318A1 (zh) |
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WO2017044071A1 (en) | 2015-09-08 | 2017-03-16 | Victor Equipment Company | Torch handle including pneumatically operated jaw |
CN109759674A (zh) * | 2019-01-11 | 2019-05-17 | 东方电气集团东方汽轮机有限公司 | 一种深孔用的碳弧气刨枪 |
CN114054896A (zh) * | 2021-10-12 | 2022-02-18 | 中国一冶集团有限公司 | 一种气刨碳棒输送机构 |
Citations (6)
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US2726309A (en) * | 1953-06-15 | 1955-12-06 | Arcair Co | Cutting and gouging torch using electric arc and gas stream |
US3659072A (en) * | 1970-09-17 | 1972-04-25 | Union Carbide Corp | Cutting and gouging electrode holder |
GB1377572A (en) * | 1972-02-25 | 1974-12-18 | Maddison J H | Electrode holder for arc gouging torch |
US4218605A (en) * | 1979-03-30 | 1980-08-19 | Arcair Company | Air-carbon arc cutting and gouging torch |
CN2587569Y (zh) * | 2002-12-29 | 2003-11-26 | 邵如生 | 碳弧气刨炬 |
KR200451165Y1 (ko) * | 2008-07-25 | 2010-11-30 | 박노원 | 가우징 토치 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US4361746A (en) * | 1980-10-20 | 1982-11-30 | Air Products And Chemicals, Inc. | Underwater cutting and welding torch |
JP2006266667A (ja) * | 2005-02-28 | 2006-10-05 | Daikin Ind Ltd | 膨張弁及び冷凍装置 |
CN202510741U (zh) * | 2012-04-13 | 2012-10-31 | 中冶赛迪工程技术股份有限公司 | 并联导气环路切断控制滑阀 |
CN203109420U (zh) * | 2012-12-24 | 2013-08-07 | 忻建国 | 一种碳弧气刨枪的气阀机构 |
-
2012
- 2012-12-24 CN CN201210564723.5A patent/CN103008856B/zh not_active Expired - Fee Related
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2013
- 2013-01-08 WO PCT/CN2013/070209 patent/WO2014101318A1/zh active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2726309A (en) * | 1953-06-15 | 1955-12-06 | Arcair Co | Cutting and gouging torch using electric arc and gas stream |
US3659072A (en) * | 1970-09-17 | 1972-04-25 | Union Carbide Corp | Cutting and gouging electrode holder |
GB1377572A (en) * | 1972-02-25 | 1974-12-18 | Maddison J H | Electrode holder for arc gouging torch |
US4218605A (en) * | 1979-03-30 | 1980-08-19 | Arcair Company | Air-carbon arc cutting and gouging torch |
CN2587569Y (zh) * | 2002-12-29 | 2003-11-26 | 邵如生 | 碳弧气刨炬 |
KR200451165Y1 (ko) * | 2008-07-25 | 2010-11-30 | 박노원 | 가우징 토치 |
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CN103008856A (zh) | 2013-04-03 |
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