M397495 五、新型說明： 【新型所屬之技術領域】 本創作係卜種多功能逆火防止器，尤指—種連接在氧乙块輝 炬（切割器）和氧氣瓶、乙炔氣瓶之輸氣管間，用為輸送氧乙快煤氣 體供金屬件之切割及雜崎，能有效擋止存在於氣體中之雜質阻塞 壓力調節器和鲜炬’確實防止產生逆火、迴火、氣爆等危險現象，進 而提升切割及熔接工作之安全性功效。 【先前技術】 按，目前所習知的氧乙炔煤氣熔接（〇xy侧价时侧㈣）（或 切割），是屬於-種氣焊之焊接（或切割）方法，其原理是利用兩種不 .質之氣舰燒後職生之高溫以縣銲件與銲條使成為—體之辉 接方法，主要歧贿餘纽乙炔職，儀轉後所產生之高溫 來達到熔融銲件（或切割金屬機件）之目的。 如第-圖所示，基本的氧乙快煤氣銲設備包括：氧氣鋼瓶⑴、 乙炔氣鋼瓶⑵、氧乙炔氣壓力調節器⑶、輸送氣體之橡勝管⑷、 銲炬（又稱切割器或吹管，B1〇wpipes)⑸等元件其中，該鲜炬 ⑸之入氣端係呈現—分為二之分叉狀銜接部⑻、⑺，俾分別 和輸达氧氣及乙炔氣之橡勝管⑷互相銜接，使該二種氣體經形成一 混合流體至其末端之火口噴流出。 由於氧乙炔煤氣切割焊接很容易發生意外，通常作業上潛在之危 害有：爆炸或火災、灼傷、氣體中毒、使用不當造成氣爆，導致工作 中隨時喊著高危險性，尤其工作人員之安全性堪慮。 3 M397495 逆火（俗稱回火或倒吞火，Backfire)，這是乙炔熔接（或切割金屬 機件）作業在調節乙炔、氧氣流量時，若因氣體之背壓過高（即乙炔氣 或氡氣之壓力被調節到小於大氣壓力）時，或因氣體中存在有雜質使 得銲炬受離塞，即氧乙块氣流出量受到阻塞，均會造成氣體逆流而 導致逆火（火很像被吸入般，沿著橡膠管回到鋼瓶）、氣爆等危險現象。 總而言之，習知的氧乙炔熔接（或切割）工作中所存在逆火（回 火）' 氣爆等危險現象，長久以來均對卫作人員造成最大的潛在危險性 威脅，至今仍未見有任何足以改善器具或解決之道，實在是此業界最 亟待克服的技術課題。 【新型内容】 本創作人為改善上述㈣品之各項缺失’遂積於從事此製造業多 年之實務經驗，純“研究改良，證實只要在氧乙㈣氣鲜設備上 安裝-逆火防止裝置，便能完全克服習知容料致爆炸之危險現象， 於是’經多次輯品試製及實驗之後，終於觀肯定成效，而首創出 一種「多功能逆火防止器」新型專利創作。 換言之’本創作「多魏逆火防止器」之主要目的，即在氧乙块 煤氣橡膠管上連接壓力調節n和銲炬等銜接部位，設置—逆火防止裝 置，藉由該逆火防止裝置内設置有具備出、人口二只單_作用之活 塞及氣體猶元件，俾有效擋止存在於氣財之雜質阻塞壓力調節器 和銲炬，進而達到防止氧乙炔氣流出量阻塞，而產生逆火、迴火、氣 爆等危險現象，進而_效確紅提物·紅作技安全性功效。 以下，為充分表現本創作人所研發設計「多功能逆火防止器」，各 4 M397495 組成元件之技術賴、_、特徵，及達成上述職目狀功效，兹 再佐以附®所列舉之具體實施例加以揭露詳述，謹請—併參閱。 【實施方式】 如第-圖至U所不’本創作「多功能逆火防止器」係包括： -第一主體（1G) ’似-中空管狀體，其中—端具有—可供輸送 氣體之橡膠管⑷套接’以形成_具有中空人氣口（12)之管接頭部 (11)，另端則預設具有螺紋面之接合部（⑷，延伸該人氣口（12) 至第-主體（10)内部’便是一狀似『内管』狀之中空腔室（13)，而 且’該中空腔室（13)之内徑S較該人氣口⑴）之内徑為大； 一活塞元件（20)’為一直徑接近上述入氣口（12)内徑大小之尖 柱狀物體，得活動設置在上述第一主體（10)之該入氣口（12)中， 至於其末端則設計呈一突出較大直徑之凸緣部（21)，則接近於上述中 空腔室（13)之内徑，使該活塞元件（2〇)能在上述入氣口（12)及 中空腔室（13)中進行軸向自由往復移位作用； 一油環（22)，為一 t空環體狀彈性橡膠材料製成，得緊密套設在 上述活塞元件（20)上，俾能隨著該活塞元件（2〇)產生同步移位作 用，而該油環（22)之外控則亦接近於上述中空腔室（13)之内徑， 使該油環（22)隨著該活塞元件（20)同步移位至上述入氣口（a) 和中空腔室（13)之相鄰界點時，能藉該油環（22)頂靠在上述中空 腔室（13)之該端部位置，以阻擋由上述入氣口（12)進入之氣體， 進入到該中空腔室（13)中； 一過慮元件（3〇) ’是由粉末狀耐尚溫不鏽鋼金屬材料經過熱燒結 5 M397495 成型方式製呈中空環柱體狀，且具有可透氣性之細微毛細孔，得套設 在上述第-主體（ίο)内之中空腔室（13)端部位置，而且，在朝: 上述入氣口（12)方向之端部位置，更凹設有數道可供氣體通過之凹 槽狀流道（31); 一過濾片（32) ’是為一種具有網目之金屬網片體，得置設在上述 中空腔室⑽端部及過紅件（3G)之間，提供過錢體中雜質作 用； -第二主體（50)，似-中空管狀體，其中朝向上述第—主體（1〇) 内之-端’預設具有職孔狀之接合部（51)，得_接合部⑸）， 和上述第-主體（1〇)之接合部（14)互相螺合，另—端則為可供和 銲矩（又稱切割器或吹管，Blowpipes)⑸互相接合之銜接部⑸）； -内管（40)’係置設在上述第二主體（5〇)内之一種中空管狀體， 其中空内孔是設計成具有二^同大小孔徑，其巾在躺上述過渡元件 (30)方向之-段内孔徑，是相同於上述人氣口（12)之内徑大小， 並且使另-段内孔徑相同於上述中空腔室（13)之内徑大小以便於 再提供另設有上述油環（22)之上述活塞元件⑼），能在該内 s (40)中產生同步轴向往復移位作用；其中，介於該内管（仙）和 上述過渡元件（30)之間，亦設置有另—上述過制（32)，得提供再 次過I氣體中雜質之作用；再者，為提供氣體流糾能具有預期充足 之流量及更順暢，更在該内管⑽接觸上述過濾片（32)之端面， 預設有向内傾斜—適當錐面角度之倒角部份（41); -頂推το件（42)，是一種_性彈簧元件，得置設在上述内管㈤ 6 M397495 之較大内孔徑部份中，提供對設置於該内管（40)内之上述活塞元件 (20)產生頂推作用使氣體流動更順暢，促使套設在該活塞元件 之油環（22)’能保持壓迫在上述内管（4〇)之較大内孔徑部份中，鄰 界於其較小孔徑位置處； 一固定元件（60)’為一中空環柱體狀’係設置在上述第二主體（5〇) 内，作為同時支撐上述内管（40)及頂推元件（42)端部保持於一預 定流體位置之作用。 藉由上述各元件之組合，當本創作將上述第一主體（1〇)—端之 管接頭部（11)和輸送氣體之上述橡膠管套接，再將另一端第二 主體（50)之接合部（51)和銲炬（5)互相接合。操作使用時，氧氣 (或乙炔氣體）便由輸送氣體之橡膠管（4)進入，再經由管接頭部 之入氣口（12)進入時，便推迫該活塞元件（2〇)向上述腔室（13) 方向移位，此時，氣體便由該活塞元件（2〇)外側和該腔室（13)間 之間隙通過，並再依序經過上述過濾片（32)、過濾元件（3〇)，及又 一過濾片（32)等元件，層層過濾該氣體中之雜質，然後再貫穿位於 上述第二主體（50)内之内管（40)，將迫使位於該内管（4〇)内之該 活塞元件（20)向該頂推元件（42)方向推迫移位，氣體便由該活塞 元件（20)外側和該内管（4〇)較大内孔徑部份間之間隙通過，遂再 經由该頂推元件（42)後貫穿該固定元件（6〇)，然後便進入到上述銲 炬（5)中提供燃氣使用。 一旦有發生因氣體背壓過高（即乙炔或氧氣之壓力小於大氣壓力） 時，位於上述第二主體（50)内之頂推元件（42)將因受擠壓力變小 7 M397495 而藉由釋放原受壓縮之能量，便推迫該活塞元件（20)及其油環（22) 再度往該内管（40)方向產生回程移位動作，令該活塞元件（2〇)及 其油環（22)封閉住該内管（40)，則來自上述銲炬（5)中可能之逆 火便無法隨氣體回流到該内管（40)内；如此，便能有效達到防制逆 火、回火或引起氣爆等現象，進而能確實提升整體工作之安全性效果。 續如第七圖至第九圖所示，本創作亦可將上一實施例中之第二主 體（50)略作變更設計，以便利於和一般習知的管接頭（7〇)互相連 接組合使用；亦即，將該第二主體（50)除了其中朝向上述第一主體 (10)内之一h，預没具有螺紋孔狀之接合部（51)之外，另一端則 預設呈具有外螺紋部份，以便利於提供習知管接頭（7Q)既有之螺帽 端互相螺接接合（如第七圖所示）’使該習知管接頭（7〇)能接受提供 輸送氣體之_管⑷套接制，進而使得本創作亦能_和輸送氣 體之橡膠管（4)及上述氧乙炔氣壓力調節器⑶共同連接使用，使 整個氧乙賊接·!·具充分制“？層防制，，並錢底杜絕有逆火、回 火或引起氣爆等現象，進而能確實提升整體工作之安全性功效。 综上所述’本創作能藉由被應用在和上述氡乙炔氣壓力調節器（3 )、輸送氣體之橡膠管⑷，及銲炬⑸等元件間之連接組合以 構成有效“多層防制，，並且澈底杜絕有逆火、回火或引起氣爆等現象 發生之虞’職作人纽讀場所触確實_提供又有效之安 全性保障’經樣品多次實際試驗後，已證實堪稱實用、操作簡單又安 全之進步性創作，極具產業利用價值。 本創作上稍麟之實_，縣制_本創作之技術理念及 8 M397495 預期可以達致之成效，並非在限制本創作之實施，舉凡未脫離本創作 之創作精神下，所作之各種元件等效變化鱗換，均仍減於本創作 之權利請求範嘴。 【圖式簡單說明】 第一圖係習知基本的氧乙炔氣銲設備結構示意圓。 第二圖係本創作第一實施例之立體分解結構示意圖。 第三圖係第二圖之組合結構半剖面示意圖。 第四圖係本創作第-實施例和銲炬之組合結構半剖面示意圖。 第五圖係第四圖之c位置放大視圖。 第六圖係第五圖之又一動作示意圖。 第七圖係本創作第二實施例之立體分解結構示意圖。 第八圖係第七圖之組合結構半剖面示意圖。 第九圖係本鋪第二實施例和輸送氧氣及乙城橡膠管互相銜接之組 合結構半剖面示意圖。 【主要元件符號說明】 【習知部份】： 氧氣鋼瓶（1)， 乙炔氣壓力調節器（3) 銲炬（5)， 【本創作部份】： 第一主體（1〇)， 入氣口（12)， 乙炔氣鋼瓶（2) 輸送氣體之橡膠管（4) 銜接部（6)、（7)。 管接頭部（11)， 腔室（13)， 9 M397495 活塞元件（20)， 油環（22)， 流道（31)， 内管（40)， 頂推元件（42)， 銜接部（52)， 接合部（14)、（51)， 凸緣部（21)， 過濾元件（30)， 過濾片（32)， 倒角部份（41)， 第二主體（50)， 固定元件（60)， 管接頭（70)。M397495 V. New description: 【New technical field of the invention】 This type of creation is a multi-function backfire preventer, especially a gas pipe connected to an oxygen acetylene torch (cutter) and an oxygen cylinder or an acetylene cylinder. In order to transport the oxygen and fast gas body for the cutting and miscellaneous of the metal parts, it can effectively block the impurities present in the gas and block the pressure regulator and the fresh torch' to prevent the danger of backfire, tempering, gas explosion, etc. Phenomenon, which enhances the safety of cutting and welding work. [Prior Art] According to the conventional oxyacetylene gas welding (〇 侧 side side (4)) (or cutting), it is a welding (or cutting) method of gas welding, the principle is to use two kinds. The high temperature of the gas-fired ship after the fire is burned by the county weldment and the welding rod, which is the method of fusion of the body, the main part of the bribe, the high temperature generated by the instrument to reach the molten weldment (or the cutting metal machine) The purpose of the article). As shown in the figure, the basic oxygen-bike gas welding equipment includes: oxygen cylinder (1), acetylene gas cylinder (2), oxyacetylene gas pressure regulator (3), rubber gas delivery tube (4), welding torch (also known as cutter or Blowing tube, B1〇wpipes) (5) and other components, wherein the inlet end of the fresh torch (5) presents a bifurcated junction (8), (7), and the rubber and acetylene gas (4) are respectively exchanged with each other. Coupling, the two gases are ejected through a crater that forms a mixed fluid to the end thereof. Because oxyacetylene gas cutting and welding is prone to accidents, the potential hazards in operation are: explosion or fire, burns, gas poisoning, improper use of gas explosion, resulting in high risk at work, especially the safety of the staff. Worry. 3 M397495 Backfire (commonly known as tempering or backfire, Backfire), this is the operation of acetylene welding (or cutting metal parts) when adjusting the flow of acetylene and oxygen, if the back pressure of the gas is too high (ie acetylene gas or hydrazine) When the pressure of the gas is adjusted to be less than atmospheric pressure, or because the presence of impurities in the gas causes the torch to be disconnected, that is, the amount of oxygen in the gas block is blocked, it will cause the gas to flow backwards and cause backfire (the fire is very similar to being Dangerous phenomena such as inhalation, returning to the cylinder along the rubber tube), gas explosion. All in all, the dangerous phenomena such as backfire (tempering) and gas explosion in the conventional oxyacetylene welding (or cutting) work have long caused the greatest potential danger to the guards. So far, nothing has been seen. Sufficient to improve the appliance or solution, it is the most urgent technical issue in the industry. [New content] The creator has improved the above-mentioned (four) products' lack of 'concealed experience in the manufacturing industry for many years, pure "research and improvement, confirmed that as long as the installation of anti-fire prevention device on the oxygen (four) gas fresh equipment, It is possible to completely overcome the dangerous phenomenon of the explosion caused by the conventional materials. Therefore, after many trials and experiments, the company finally realized the effect and created a new type of patent creation of "multi-function backfire preventer". In other words, the main purpose of the "Duowei Backfire Preventer" is to connect the pressure adjustment n and the welding torch to the oxygen block gas hose, and set the backfire prevention device by the backfire prevention device. It is equipped with a piston and a gas element that has a single population and a single population. It effectively blocks the presence of impurities in the gas to block the pressure regulator and the torch, thereby preventing the blockage of the oxyacetylene gas flow. Fire, tempering, gas explosion and other dangerous phenomena, and then _ effect red extracts · red work safety. In order to fully demonstrate the design of the "multi-function backfire preventer" designed and developed by the creator, the technical and technical features of each of the 4 M397495 components, and the achievement of the above-mentioned functions, are listed in the attached The specific embodiments are disclosed in detail, please - and refer to. [Embodiment] As described in the first to the U, the "multi-function backfire preventer" includes: - a first body (1G) 'like- hollow tubular body, wherein the - end has - for gas transport The rubber tube (4) is sleeved to form a pipe joint portion (11) having a hollow air port (12), and the other end is provided with a joint portion having a thread surface ((4) extending the air port (12) to the first body ( 10) The inside is a hollow chamber (13) in the shape of an "inner tube", and the inner diameter S of the hollow chamber (13) is larger than the inner diameter of the human mouth (1); (20) 'is a spike-shaped object having a diameter close to the inner diameter of the air inlet (12), and is disposed in the air inlet (12) of the first body (10), and the end is designed as a The flange portion (21) protruding from the larger diameter is close to the inner diameter of the hollow chamber (13) so that the piston member (2) can be in the air inlet (12) and the hollow chamber (13). Performing an axial free reciprocating displacement; an oil ring (22), which is made of a t-annular ring-shaped elastic rubber material, is tightly sleeved in the above-mentioned work On the component (20), the crucible can be synchronously displaced with the piston element (2〇), and the outer control of the oil ring (22) is also close to the inner diameter of the hollow chamber (13), so that The oil ring (22) can be placed against the hollow by the oil ring (22) as the piston element (20) is synchronously displaced to the adjacent boundary points of the air inlet (a) and the hollow chamber (13). The end of the chamber (13) is positioned to block the gas entering through the air inlet (12) into the hollow chamber (13); a filter element (3〇) is made of powdered The stainless steel metal material is formed into a hollow ring cylinder by heat sintering 5 M397495, and has fine pores of gas permeability, and is disposed at the end of the hollow chamber (13) in the first body (ίο) Further, in the end portion of the air inlet (12) direction, a plurality of groove-shaped flow passages (31) through which gas can pass are recessed; a filter piece (32) is a mesh type The metal mesh body may be disposed between the end of the hollow chamber (10) and the reddish piece (3G) to provide impurities in the money body; a body (50), which is a hollow tubular body, wherein the end portion of the first body (1〇) is preset to have a joint portion (51) having a working hole shape, a joint portion (5), and the above - the joints (14) of the main body (1) are screwed to each other, and the other ends are joints (5) for the joints of welding moments (also known as cutters or blowpipes) (5); - inner tube (40) a hollow tubular body disposed in the second body (5〇), wherein the hollow inner hole is designed to have a coaxial aperture of the same size, and the towel is in the direction of the transition element (30) The aperture is the same as the inner diameter of the above-mentioned human mouth (12), and the inner diameter of the other section is the same as the inner diameter of the hollow chamber (13) so as to provide another oil ring (22). The piston element (9) can generate a synchronous axial reciprocating displacement in the inner s (40); wherein, between the inner tube (s) and the transition element (30), another Over-production (32), to provide the role of impurities in the I gas again; in addition, to provide gas flow correction energy is expected to be sufficient The flow rate is smoother, and the inner tube (10) is in contact with the end surface of the filter sheet (32), and is provided with an inward tilting--a chamfered portion of the appropriate taper angle (41); - a push-pull member (42), Is a kind of _ spring element, which is disposed in the larger inner bore portion of the inner tube (5) 6 M397495, and provides an urging effect on the piston element (20) disposed in the inner tube (40) The flow is smoother, so that the oil ring (22)' sleeved on the piston element can be kept pressed in the larger inner diameter portion of the inner tube (4〇), adjacent to its smaller aperture position; The component (60) is a hollow ring cylinder-shaped portion disposed in the second body (5〇) to simultaneously support the end of the inner tube (40) and the pushing element (42) at a predetermined fluid position. The role. By the combination of the above components, the first body (1〇)-end pipe joint portion (11) and the rubber pipe of the conveying gas are sleeved, and the other end second body (50) is The joint portion (51) and the welding torch (5) are joined to each other. When in operation, oxygen (or acetylene gas) is introduced by the rubber tube (4) that delivers the gas, and when it enters through the inlet port (12) of the pipe joint portion, the piston member (2〇) is pushed toward the chamber. (13) The direction is shifted. At this time, the gas passes through the gap between the outside of the piston element (2〇) and the chamber (13), and sequentially passes through the filter (32) and the filter element (3〇). And a further filter (32) and the like, layering the impurities in the gas, and then penetrating the inner tube (40) located in the second body (50), forcing the inner tube (4〇) The piston member (20) is urged to be displaced in the direction of the thrust member (42), and the gas is separated by a gap between the outer side of the piston member (20) and the inner bore portion of the inner tube (4). After passing through the fixing element (6〇), the crucible passes through the pushing element (42), and then enters the welding torch (5) to provide gas use. Once the gas back pressure is too high (ie, the pressure of acetylene or oxygen is less than atmospheric pressure), the thrusting element (42) located in the second body (50) will be borrowed by the squeeze force 7 M397495. By releasing the originally compressed energy, the piston element (20) and its oil ring (22) are again urged to return to the inner tube (40), so that the piston element (2〇) and its oil When the ring (22) closes the inner tube (40), the possible backfire from the welding torch (5) cannot be returned to the inner tube (40) with the gas; thus, the anti-backfire can be effectively achieved. , tempering or causing gas explosion and other phenomena, which can actually improve the safety of the overall work. As shown in the seventh to ninth drawings, the second body (50) in the previous embodiment can be slightly modified to facilitate the interconnection with a conventional pipe joint (7〇). In other words, the second body (50) is preset to have a joint portion (51) having a threaded hole shape in addition to one of the first body (10), and the other end is preset to have Externally threaded portion to facilitate the provision of conventional pipe joints (7Q) with the nut ends being screwed together (as shown in Figure 7) to enable the conventional pipe joint (7〇) to accept the delivery of gas _ tube (4) socket system, so that the creation can also be used together with the rubber tube (4) for conveying gas and the above-mentioned oxyacetylene gas pressure regulator (3), so that the entire oxygen thief is connected! The layer is controlled, and the bottom of the fund eliminates the phenomenon of backfire, tempering or gas explosion, which can actually improve the safety of the overall work. In summary, the present work can be applied to the above-mentioned oxime acetylene. Gas pressure regulator (3), rubber tube (4) for conveying gas, and welding torch (5) The combination of connections to form an effective "multi-layer control, and to eliminate the occurrence of backfire, tempering or causing gas explosions, etc." The job seeker's new reading place is indeed _ provide and effective safety protection' After the actual test, it has been proved to be practical, simple and safe, and it has great industrial value. The creation of this syllabus _, the county system _ the technical concept of this creation and 8 M397495 expected to achieve results, is not limiting the implementation of this creation, without any departure from the creative spirit of this creation, the various components, etc. The effect change scales are still reduced to the scope of this creation request. [Simple description of the drawing] The first figure is a schematic diagram of the basic structure of the conventional oxyacetylene gas welding equipment. The second drawing is a schematic exploded perspective view of the first embodiment of the present invention. The third figure is a half-sectional schematic view of the combined structure of the second figure. The fourth figure is a half-sectional schematic view of the combined structure of the first embodiment and the welding torch of the present invention. The fifth figure is an enlarged view of the position c of the fourth figure. The sixth figure is another schematic diagram of the action of the fifth figure. The seventh figure is a schematic exploded perspective view of the second embodiment of the present invention. The eighth figure is a half-sectional schematic view of the combined structure of the seventh figure. The ninth figure is a half-sectional schematic view of the second embodiment of the present shop and the combined structure of the oxygen transporting and the rubber hose of the B-city. [Main component symbol description] [Learn part]: Oxygen cylinder (1), Acetylene gas pressure regulator (3) Welding torch (5), [This creation part]: First main body (1〇), air inlet (12), Acetylene gas cylinder (2) Rubber tube (4) for conveying gas (6), (7). Pipe joint part (11), chamber (13), 9 M397495 piston element (20), oil ring (22), flow path (31), inner tube (40), thrusting element (42), connecting part (52 ), joint (14), (51), flange portion (21), filter element (30), filter (32), chamfered portion (41), second body (50), fixing element (60) ), pipe joint (70).