JP5620189B2 - steam trap - Google Patents

steam trap Download PDF

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Publication number
JP5620189B2
JP5620189B2 JP2010180549A JP2010180549A JP5620189B2 JP 5620189 B2 JP5620189 B2 JP 5620189B2 JP 2010180549 A JP2010180549 A JP 2010180549A JP 2010180549 A JP2010180549 A JP 2010180549A JP 5620189 B2 JP5620189 B2 JP 5620189B2
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valve
casing
temperature
discharge passage
tip
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JP2012037027A (en
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康祐 渋谷
康祐 渋谷
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Tlv Co Ltd
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Tlv Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16TSTEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
    • F16T1/00Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
    • F16T1/20Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by floats
    • F16T1/22Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by floats of closed-hollow-body type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16TSTEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
    • F16T1/00Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
    • F16T1/38Component parts; Accessories
    • F16T1/48Monitoring arrangements for inspecting, e.g. flow of steam and steam condensate

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Temperature-Responsive Valves (AREA)
  • Details Of Valves (AREA)

Description

本発明は、蒸気配管系に発生するドレンを自動的に排出するスチームトラップに関し、特に弁部材が離着座して開閉する弁座部材の排出通路の内面に付着した流体中の異物を掃除できるものに関する。 The present invention relates to a steam trap that automatically discharges drain generated in a steam piping system, and in particular, can clean foreign matter in a fluid adhering to the inner surface of a discharge passage of a valve seat member that opens and closes when the valve member opens and closes. About.

従来のスチームトラップは、例えば特許文献1に開示されている。ここに開示されたスチームトラップは、弁ケーシングで入口と弁室と出口を形成し、弁室を出口側に連通する排出通路を有する弁座部材を取り付け、弁室内に弁座部材に離着座して排出通路を開閉する弁部材を配置し、掃除部材を排出通路内に配置し、掃除部材の先端を弁ケーシングから突出させて弁ケーシングに進退調節可能にねじ結合し、掃除部材を外部から弁ケーシングに対してねじ込むことにより排出通路の内面に付着した異物を掃除するものである。 A conventional steam trap is disclosed in Patent Document 1, for example. The steam trap disclosed here forms an inlet, a valve chamber, and an outlet in a valve casing, and has a valve seat member having a discharge passage communicating with the valve chamber on the outlet side, and is attached to and detached from the valve seat member in the valve chamber. A valve member that opens and closes the discharge passage is disposed, the cleaning member is disposed in the discharge passage, the tip of the cleaning member protrudes from the valve casing, and is screwed to the valve casing so as to be able to advance and retract. The foreign matter adhering to the inner surface of the discharge passage is cleaned by screwing into the casing.

特開2007−107643JP2007-107643

上記従来のスチームトラップは、掃除部材を外部から弁ケーシングに対してねじ込むことにより排出通路の内面に付着した異物を掃除できるものであるが、異物が付着しているか否かを外部から確認できないために、掃除の時期が遅れたり不必要に掃除したりする問題点があった。また、異物を掃除した後、元の位置に掃除部材をねじ戻すのを怠ると弁部材が弁座部材に着座できなくなって蒸気を漏出したりドレンの排出が妨げられて排出流量が低下したりする問題点があった。 The conventional steam trap can clean foreign matter adhering to the inner surface of the discharge passage by screwing the cleaning member into the valve casing from the outside, but it cannot be confirmed from the outside whether or not foreign matter is attached. In addition, there was a problem that the timing of cleaning was delayed or unnecessary cleaning was performed. In addition, if the cleaning member is neglected to be screwed back to the original position after cleaning the foreign material, the valve member cannot be seated on the valve seat member, and the steam leaks or the drainage is prevented, resulting in a decrease in the discharge flow rate. There was a problem to do.

したがって本発明が解決しようとする課題は、排出通路の内面に異物が付着しているか否かを及び掃除部材がねじ戻されているか否かを外部から確認できるスチームトラップを提供することである。 Therefore, the problem to be solved by the present invention is to provide a steam trap capable of confirming from the outside whether foreign matter has adhered to the inner surface of the discharge passage and whether the cleaning member has been screwed back.

上記の課題を解決するために、本発明のスチームトラップは、弁ケーシングで入口と弁室と出口を形成し、弁室を出口側に連通する排出通路を有する弁座部材を取り付け、弁室内に弁座部材に離着座して排出通路を開閉する弁部材を配置し、掃除部材を排出通路内に配置し、掃除部材の先端を弁ケーシングから突出させて弁ケーシングに進退調節可能にねじ結合し、掃除部材を外部から弁ケーシングに対してねじ込むことにより排出通路の内面に付着した異物を掃除するものにおいて、弁ケーシングの外表面に温度表示器を取付け、温度表示器が、弁ケーシングの外表面に取付けられるケースと、ケース内に収容され弁ケーシング内の温度変化により収縮あるいは伸張する温度応動部材と、温度応動部材に取付けられ温度応動部材の収縮あるいは伸張によりケースの軸心方向に変位する可動部材と、可動部材の一端側に取付けられ所定温度以下になるとケースから突出する低温表示部とを具備し、所定温度以下になると低温表示部が突出するケースの先端がねじ戻され弁ケーシングから突出する掃除部材の先端と同じ突出位置に位置合わせされていることを特徴とするものである。 In order to solve the above-described problems, the steam trap of the present invention is formed with a valve seat member having a discharge passage that forms an inlet, a valve chamber, and an outlet in a valve casing, and communicates the valve chamber to the outlet side. A valve member that opens and closes the discharge passage by being seated on and off the valve seat member is disposed, the cleaning member is disposed in the discharge passage, and the tip of the cleaning member protrudes from the valve casing and is screwed to the valve casing so as to be able to advance and retract. , Cleaning the foreign matter adhering to the inner surface of the discharge passage by screwing the cleaning member into the valve casing from the outside. A temperature indicator is attached to the outer surface of the valve casing, and the temperature indicator is attached to the outer surface of the valve casing. A case attached to the case, a temperature responsive member accommodated in the case and contracted or expanded by a temperature change in the valve casing, and a temperature responsive member attached to the temperature responsive member is contracted Comprises a movable member that is displaced in the axial direction of the case by extension, and a low-temperature display portion that is attached to one end of the movable member and protrudes from the case when the temperature is lower than a predetermined temperature. The tip of the case to be screwed back is aligned at the same protruding position as the tip of the cleaning member protruding from the valve casing.

本発明によれば、スチームトラップの弁ケーシングの外表面に取付けた温度表示器の低温表示部が弁ケーシングから突出することを確認することにより、排出通路の内面に異物が付着していることを外部から確認できるという優れた効果を生じる。この場合、掃除部材を外部から弁ケーシングに対してねじ込むことにより排出通路の内面に付着した異物を掃除する。そして、弁ケーシングから突出する掃除部材の先端が所定温度以下になると低温表示部が突出するケースの先端と同じ突出位置となるように掃除部材をねじ戻す。この場合、掃除部材の先端がケースの先端と同じ突出位置までねじ戻されていなければ掃除部材がねじ戻されていないことを外部から確認できるという優れた効果を生じる。 According to the present invention, by confirming that the low temperature display portion of the temperature indicator attached to the outer surface of the valve casing of the steam trap protrudes from the valve casing, it is confirmed that the foreign matter has adhered to the inner surface of the discharge passage. This produces an excellent effect that can be confirmed from the outside. In this case, the foreign material adhering to the inner surface of the discharge passage is cleaned by screwing the cleaning member into the valve casing from the outside. And when the front-end | tip of the cleaning member which protrudes from a valve casing becomes below predetermined temperature, a cleaning member is screwed back so that it may become the same protrusion position as the front-end | tip of the case which a low-temperature display part protrudes. In this case, if the front end of the cleaning member is not screwed back to the same protruding position as the front end of the case, it is possible to confirm that the cleaning member is not screwed back from the outside.

本発明の実施の形態に係わるスチームトラップの断面図である。It is sectional drawing of the steam trap concerning embodiment of this invention.

以下、本発明の実施の形態について、図1を参照して説明する。本体1に蓋2をボルト3で締結して弁ケーシング形成し、内部に弁室4を形成する。本体1は入口5と出口通路6と出口7を有し、入口5は弁室4の上部に連通する。入口5と出口7は水平方向に同一軸上に形成する。弁室4の下部の蓋2に排出通路8を開けた弁座部材9をねじ結合する。排出通路8は弁室4側端の小径の先端部と、先端部の下流の下流に向かって径の拡がったテーパー部と、テーパー部の下流の大径の後端部から成る。蓋2は出口通路10を有し、弁室4の下部は排出通路8から出口通路10,6を介して出口7に連通する。弁室4内に弁座部材9の弁室側端面に離着座して排出通路8を開閉する弁部材としての中空球形のフロート11を自由状態で配置する。フロート11が排出通路8を閉じた位置で当接するフロート座12をフロート11の下方に、図面の手前側と向う側に2つ設ける。 Hereinafter, an embodiment of the present invention will be described with reference to FIG. A lid 2 is fastened to the main body 1 with bolts 3 to form a valve casing, and a valve chamber 4 is formed inside. The main body 1 has an inlet 5, an outlet passage 6 and an outlet 7, and the inlet 5 communicates with the upper portion of the valve chamber 4. The inlet 5 and the outlet 7 are formed on the same axis in the horizontal direction. A valve seat member 9 having a discharge passage 8 is screwed to the lid 2 at the bottom of the valve chamber 4. The discharge passage 8 includes a small-diameter leading end at the end of the valve chamber 4, a tapered portion whose diameter increases toward the downstream downstream of the leading end, and a large-diameter trailing end downstream of the tapered portion. The lid 2 has an outlet passage 10, and the lower portion of the valve chamber 4 communicates from the discharge passage 8 to the outlet 7 through the outlet passages 10 and 6. A hollow spherical float 11 serving as a valve member that opens and closes the discharge passage 8 by being seated on the valve chamber side end face of the valve seat member 9 is disposed in the valve chamber 4 in a free state. Two float seats 12 with which the float 11 abuts at the position where the discharge passage 8 is closed are provided below the float 11 on the side facing the front side of the drawing.

蓋2に弁座部材9と同一軸上にプラグ13をねじ結合する。プラグ13に外部から進退調節可能に掃除部材14をねじ結合する。掃除部材14はプラグ13を貫通し、排出通路8の先端部の下流に位置する内端部が前進により弁室4内に突出し、先端部が外部に位置する。プラグ13と掃除部材14の間に掃除部材14の気密を保つシール部材としてのパッキング15を配置し、プラグ13にパッキング押え16をねじ結合してプラグ13と掃除部材14の間の気密を保つ。掃除部材14の内端部の外径は排出通路8の先端部の内径よりも僅かに小径に形成し、掃除部材14を前進させたときに掃除部材14の先端部で排出通路8の先端部内面を掃除する。 A plug 13 is screwed to the lid 2 on the same axis as the valve seat member 9. The cleaning member 14 is screwed to the plug 13 so as to be adjustable from the outside. The cleaning member 14 penetrates the plug 13, and an inner end portion located downstream of the distal end portion of the discharge passage 8 protrudes into the valve chamber 4 by advancing, and the distal end portion is located outside. A packing 15 as a sealing member for keeping the cleaning member 14 airtight is disposed between the plug 13 and the cleaning member 14, and a packing presser 16 is screwed to the plug 13 to keep the airtightness between the plug 13 and the cleaning member 14. The outer diameter of the inner end of the cleaning member 14 is slightly smaller than the inner diameter of the tip of the discharge passage 8, and the tip of the discharge passage 8 is the tip of the cleaning member 14 when the cleaning member 14 is advanced. Clean the inside.

蓋2の外表面に温度表示器31を例えば接着テープ(図示せず)で取付ける。温度表示器31のケース32はそれぞれ外形が概略四角柱で内形が円筒状の上本体33と下本体34とから形成し、上本体33の下端部を下本体34の上端部に圧入して固定する。上本体33と下本体34は熱伝導率の高いアルミニウムで形成する。上本体33と下本体34はそれぞれ外形を概略三角形や六角形等の多角形に形成したり円筒形に形成したりしてもよい。上本体33は中心に貫通孔35を開けた隔壁36を一体に有し、下本体34は中心に貫通孔37を開けた隔壁38を一体に有する。ケース32内に貫通孔35と貫通孔37を貫通して可動部材39を配置する。可動部材39は貫通孔35と貫通孔37に案内されてケース32の軸心方向に摺動変位する。下本体34の隔壁38にバイメタルから成る温度応動部材40の一端(下端)側を溶接して取付ける。可動部材39のほぼ中央部に温度応動部材40の他端(上端)側を溶接して取付ける。可動部材の39の一端(下端)側に断面がコの字状の低温表示部41を止ねじ42で取付け、可動部材9の他端(上端)側に断面がコの字状の高温表示部43を止ねじ44で取付ける。所定温度以下になると低温表示部41が突出するケース32の先端(下端)を蓋2から突出するねじ戻された掃除部材14の先端(下端)と同じ突出位置に位置合わせして蓋2の外表面に温度表示器31を取付ける。 A temperature indicator 31 is attached to the outer surface of the lid 2 with, for example, an adhesive tape (not shown). Each case 32 of the temperature indicator 31 is formed of an upper main body 33 and a lower main body 34 each having a substantially quadrangular outer shape and a cylindrical inner shape, and the lower end portion of the upper main body 33 is press-fitted into the upper end portion of the lower main body 34. Fix it. The upper body 33 and the lower body 34 are made of aluminum having a high thermal conductivity. The upper main body 33 and the lower main body 34 may be formed in a polygonal shape such as a substantially triangular shape or a hexagonal shape, or in a cylindrical shape. The upper body 33 integrally has a partition wall 36 having a through hole 35 in the center, and the lower body 34 has a partition wall 38 having a through hole 37 in the center. A movable member 39 is disposed in the case 32 through the through hole 35 and the through hole 37. The movable member 39 is slidably displaced in the axial direction of the case 32 while being guided by the through hole 35 and the through hole 37. One end (lower end) side of the temperature responsive member 40 made of bimetal is welded to the partition wall 38 of the lower main body 34. The other end (upper end) side of the temperature responsive member 40 is welded and attached to substantially the center of the movable member 39. A low temperature display portion 41 having a U-shaped cross section is attached to one end (lower end) side of the movable member 39 with a set screw 42, and a high temperature display portion having a U-shaped cross section on the other end (upper end) side of the movable member 9 43 is attached with a set screw 44. The tip (lower end) of the case 32 from which the low temperature display portion 41 protrudes when the temperature falls below a predetermined temperature is aligned with the same protruding position as the tip (lower end) of the screwed cleaning member 14 protruding from the lid 2, and the outside of the lid 2. A temperature indicator 31 is attached to the surface.

バイメタルは熱膨張係数の異なる2種類の金属または合金を強固に一体に接着して板状に仕上げたもので、温度変化に応じて湾曲するものであり、本実施例の温度応動部材40は、短冊状のバイメタル平板を螺旋状に巻いて作ったつる巻き形をもう一度螺旋状に巻いて2重つる巻き形に形成する。最初のつる巻き形のときに内側が低膨張材料に外側が高膨張材料に成るようにする。このつる巻き形の場合、高温になると半径が小さくなり長さが長くなり、低温になるとこれとは逆に作用する。そして、これを用いて作った2重つる巻き形の場合、高温になると半径が小さくなり長さが長くなり、低温になるとこれとは逆に作用する。温度応動部材40はスチームトラップの温度が低下すると収縮して可動部材39を下方向に変位させ、スチームトラップの温度が上昇すると伸張して可動部材39を上方向に変位させる。スチームトラップが蒸気を漏出することなくドレンを自動的に正常に排出していると低温表示部41と高温表示部43は共にケース32内に没入している。これにより、正常であると確認できる。排出通路8の内面に異物が付着してスチームトラップが復水を自動的に排出できなくなると温度応動部材40が収縮して可動部材39が下方向に変位し、高温表示部43はケース32内に没入しているが、低温表示部41がケース32の先端から突出する。これにより、排出通路8の内面に異物が付着していることを外部から確認できる。この場合、掃除部材14を外部から蓋2に対してねじ込むことにより排出通路8の内面に付着した異物を掃除する。そして、異物を掃除した後、掃除部材14の先端がケース32の先端と同じ突出位置となるように掃除部材14をねじ戻す。スチームトラップが蒸気を漏出すると、温度応動部材40が伸張して可動部材39が上方向に変位し、低温表示部41はケース32内に没入しているが、高温表示部43がケース32から突出する。これにより、蒸気漏出を確認できる。 The bimetal is obtained by firmly bonding two kinds of metals or alloys having different thermal expansion coefficients into a plate shape and bending according to a temperature change. A spiral winding made by spirally winding a strip-shaped bimetal flat plate is spirally wound again to form a double spiral winding. In the first spiral shape, the inside is made of a low expansion material and the outside is made of a high expansion material. In the case of this helically wound shape, the radius becomes smaller and the length becomes longer when the temperature is high, and the opposite action occurs when the temperature is low. And in the case of the double helix formed using this, the radius becomes smaller and the length becomes longer when the temperature becomes high, and the opposite action is exerted when the temperature becomes low. The temperature responsive member 40 contracts when the temperature of the steam trap decreases and displaces the movable member 39 downward, and expands when the temperature of the steam trap increases and displaces the movable member 39 upward. When the steam trap automatically discharges the drain automatically without leaking the steam, the low temperature display portion 41 and the high temperature display portion 43 are both immersed in the case 32. Thereby, it can confirm that it is normal. When a foreign substance adheres to the inner surface of the discharge passage 8 and the steam trap cannot automatically discharge the condensate, the temperature responsive member 40 contracts and the movable member 39 is displaced downward. However, the low temperature display portion 41 protrudes from the tip of the case 32. Thereby, it can confirm from the outside that the foreign material has adhered to the inner surface of the discharge channel | path 8. FIG. In this case, the foreign material adhering to the inner surface of the discharge passage 8 is cleaned by screwing the cleaning member 14 into the lid 2 from the outside. And after cleaning a foreign material, the cleaning member 14 is screwed back so that the front-end | tip of the cleaning member 14 may become the same protrusion position as the front-end | tip of the case 32. FIG. When the steam trap leaks steam, the temperature responsive member 40 expands and the movable member 39 is displaced upward, and the low temperature display unit 41 is immersed in the case 32, but the high temperature display unit 43 protrudes from the case 32. To do. Thereby, vapor | steam leakage can be confirmed.

ドレンは入口5から弁室4内に流入して溜り、液面に応じてフロート11が浮上降下して弁座部材9に離着座して排出通路8を開閉する。排出通路8が開けられると弁室4内のドレンが排出通路8、出口通路6,10を通して出口7に排出され、排出通路8が閉じられると弁室4内の蒸気の漏出が防止される。蒸気を漏出することなくドレンを正常に排出していると、低温表示部41と高温表示部43は共にケース32内に没入している。これにより、正常であると確認できる。排出通路8の内面に異物が付着して復水を自動的に排出できなくなると、低温表示部41がケース32の先端から突出する。これにより、排出通路8の内面に異物が付着していることを外部から確認できる。この場合、掃除部材14を外部から蓋2に対してねじ込むことにより排出通路8の内面に付着した異物を掃除する。そして、異物を掃除した後、掃除部材14の先端がケース32の先端と同じ突出位置となるように掃除部材14をねじ戻す。蒸気を漏出すると、高温表示部43がケース32から突出する。これにより、蒸気漏出を確認できる。 Drain flows into the valve chamber 4 from the inlet 5 and accumulates, and the float 11 rises and falls according to the liquid level and is seated on and off the valve seat member 9 to open and close the discharge passage 8. When the discharge passage 8 is opened, drain in the valve chamber 4 is discharged to the outlet 7 through the discharge passage 8 and the outlet passages 6 and 10, and when the discharge passage 8 is closed, leakage of steam in the valve chamber 4 is prevented. If the drain is normally discharged without leaking the steam, the low temperature display portion 41 and the high temperature display portion 43 are both immersed in the case 32. Thereby, it can confirm that it is normal. When foreign matter adheres to the inner surface of the discharge passage 8 and the condensate cannot be discharged automatically, the low temperature display portion 41 projects from the tip of the case 32. Thereby, it can confirm from the outside that the foreign material has adhered to the inner surface of the discharge channel | path 8. FIG. In this case, the foreign material adhering to the inner surface of the discharge passage 8 is cleaned by screwing the cleaning member 14 into the lid 2 from the outside. And after cleaning a foreign material, the cleaning member 14 is screwed back so that the front-end | tip of the cleaning member 14 may become the same protrusion position as the front-end | tip of the case 32. FIG. When the steam is leaked, the high temperature display portion 43 protrudes from the case 32. Thereby, vapor | steam leakage can be confirmed.

本発明は、蒸気配管系に発生するドレンを自動的に排出するスチームトラップに利用することができる。 INDUSTRIAL APPLICABILITY The present invention can be used for a steam trap that automatically discharges drain generated in a steam piping system.

1 本体
2 蓋
4 弁室
5 入口
7 出口
8 排出通路
9 弁座部材
11 フロート
14 掃除部材
31 温度表示器
32 ケース
39 可動部材
40 温度応動部材
41 低温表示部
48 高温表示部
DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 4 Valve chamber 5 Inlet 7 Outlet 8 Discharge passage 9 Valve seat member 11 Float 14 Cleaning member 31 Temperature indicator 32 Case 39 Movable member 40 Temperature response member 41 Low temperature display part 48 High temperature display part

Claims (1)

弁ケーシングで入口と弁室と出口を形成し、前記弁室を前記出口側に連通する排出通路を有する弁座部材を取り付け、前記弁室内に前記弁座部材に離着座して前記排出通路を開閉する弁部材を配置し、掃除部材を前記排出通路内に配置し、前記掃除部材の先端を前記弁ケーシングから突出させて前記弁ケーシングに進退調節可能にねじ結合し、前記掃除部材を外部から前記弁ケーシングに対してねじ込むことにより前記排出通路の内面に付着した異物を掃除するものにおいて、前記弁ケーシングの外表面に温度表示器を取付け、前記温度表示器が、前記弁ケーシングの外表面に取付けられるケースと、前記ケース内に収容され前記弁ケーシング内の温度変化により収縮あるいは伸張する温度応動部材と、前記温度応動部材に取付けられ前記温度応動部材の収縮あるいは伸張により前記ケースの軸心方向に変位する可動部材と、前記可動部材の一端側に取付けられ所定温度以下になると前記ケースから突出する低温表示部とを具備し、前記ケースの先端が、ねじ戻され前記弁ケーシングから突出するあるいは突出している状態の前記掃除部材の先端と同じ突出位置に位置合わせされていることを特徴とするスチームトラップ。 Forming an inlet and the valve chamber and the outlet in the valve housing, said valve chamber fitted with a valve seat member having a discharge passage communicating with the outlet, the discharge passageway and away seated on the valve seat member to said valve chamber closing valves members disposed, to place the cleaning member in the discharge passage, the tip of the cleaning member to protrude from the valve housing and retractable adjustably screwed into the valve casing, said cleaning member from the outside in those cleaning the foreign matter adhering to the inner surface of the discharge passage by screwing with respect to the valve casing, fitted with a temperature indicator on the outer surface of the valve casing, wherein the temperature indicator, the outer surface of the valve casing and mounted case, the temperature responsive member is accommodated in the casing contracts or extended by the temperature change of the valve casing, the temperature attached to said temperature responsive member Comprising a movable member that is displaced in the axial direction of the casing by shrinkage or elongation reaction member, and a low-temperature display unit which projects the become attached to a predetermined temperature below the one end of the movable member from said casing, said casing A steam trap , wherein the tip is aligned at the same protruding position as the tip of the cleaning member in a state of being screwed back and protruding from the valve casing .
JP2010180549A 2010-08-11 2010-08-11 steam trap Active JP5620189B2 (en)

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Publication number Priority date Publication date Assignee Title
JPS5347211Y2 (en) * 1974-07-01 1978-11-11
JP4563068B2 (en) * 2004-04-15 2010-10-13 株式会社テイエルブイ Temperature indicator
JP4932213B2 (en) * 2005-10-14 2012-05-16 株式会社テイエルブイ Float type drain trap
JP4971121B2 (en) * 2007-12-14 2012-07-11 株式会社テイエルブイ steam trap

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