JP2010207667A - Coating material leakage detector for coating material valve - Google Patents

Coating material leakage detector for coating material valve Download PDF

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JP2010207667A
JP2010207667A JP2009053978A JP2009053978A JP2010207667A JP 2010207667 A JP2010207667 A JP 2010207667A JP 2009053978 A JP2009053978 A JP 2009053978A JP 2009053978 A JP2009053978 A JP 2009053978A JP 2010207667 A JP2010207667 A JP 2010207667A
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paint
leak
valve
coating material
valve body
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JP5308197B2 (en
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Shuji Kuroda
修司 黒田
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Yachiyo Industry Co Ltd
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Yachiyo Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating material leakage detector which can be easily fitted to an existing coating material valve. <P>SOLUTION: This coating material leakage detector for coating material valves includes a valve unit 4 comprising a valve body 2 and a valve body case 3, and a housing 5 where an air chamber 6 which incorporates the valve unit 4 and actuates the valve body 2 with an air flow path 7, a coating material flow path 8 which opens/closes by actuation of the valve body 2, and a leak hole 9 which lets go a leak coating material leaking into a gap part S to the outside, are formed, and detects a coating material leakage of the coating material valve 1. In addition, in this detector, an attachment 17 which has a formed leak coating material chamber 16 and can be removably fitted to the housing 5 so as to make the leak coating material chamber 16 communicate with a leak hole 9, and a fiber optic sensor 18 which is fitted to the attachment 17 and detects whether a leak coating material is present in the leak coating material chamber 16 or not, are provided. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、塗料用バルブの塗料漏れ検出装置に関する。   The present invention relates to a paint leakage detection device for a paint valve.

塗装用スプレーガンや塗料用バルブなどでの塗料漏れを検出する装置として光ファイバセンサを利用したものが公知である（例えば、特許文献１、２参照）。   A device using an optical fiber sensor is known as a device for detecting paint leakage in a paint spray gun, a paint valve, or the like (see, for example, Patent Documents 1 and 2).

特開平８−８９８５６号公報JP-A-8-89856 特開２００４−２４３２８５号公報JP 2004-243285 A

しかしながら、特許文献１、２の技術は、光ファイバセンサを直接、塗装用スプレーガンや塗料用バルブに取り付ける構造であり、塗装用スプレーガンや塗料用バルブにおける光ファイバセンサの取り付け加工が困難になりやすいという問題がある。   However, the techniques of Patent Documents 1 and 2 are structures in which an optical fiber sensor is directly attached to a paint spray gun or a paint valve, which makes it difficult to attach the optical fiber sensor to the paint spray gun or the paint valve. There is a problem that it is easy.

本発明は、既存の塗料用バルブにも容易に付設することが可能な塗料用バルブの塗料漏れ検出装置を提供することを目的としている。   An object of the present invention is to provide a paint leakage detection device for a paint valve that can be easily attached to an existing paint valve.

本発明は、前記課題を解決するため、弁体および弁体ケースからなるバルブユニットと、このバルブユニットを内蔵し、前記弁体を作動させるエア室およびエア流路と、前記弁体の作動により開閉する塗料流路と、前記弁体ケースとの間隙部に漏れたリーク塗料を外部に逃がすリーク孔と、が形成されるハウジングと、を有した塗料用バルブの塗料漏れを検出する装置であって、リーク塗料室が形成され、このリーク塗料室が前記リーク孔と連通するように前記ハウジングに着脱自在に取り付けられるアタッチメントと、このアタッチメントに取り付けられ、前記リーク塗料室におけるリーク塗料の有無を検出する光ファイバセンサと、を備えたことを特徴とする。   In order to solve the above-described problems, the present invention provides a valve unit including a valve body and a valve body case, an air chamber and an air flow path in which the valve unit is built in to operate the valve body, A device for detecting paint leakage of a paint valve having a paint flow path that opens and closes and a housing in which a leak hole that leaks leaked paint leaking to a gap between the valve body case and the outside is formed. A leak paint chamber is formed, and an attachment that is detachably attached to the housing so that the leak paint chamber communicates with the leak hole, and the presence of leak paint in the leak paint chamber is detected by being attached to the attachment. And an optical fiber sensor.

本発明によれば、アタッチメントを取り付けることによりその内部で光を反射させることができ、光ファイバセンサを塗料用バルブに容易に取り付けることができる。また、既存の塗料用バルブにも容易に光ファイバセンサを付設できる。
また、リーク塗料室はリーク塗料を溜めるバッファ機能を有することとなるので、リーク塗料室にリーク塗料が所定量溜まった時点で検出し、そのときを塗料漏れが生じたとすることができる。 According to the present invention, by attaching an attachment, light can be reflected inside the attachment, and the optical fiber sensor can be easily attached to the paint valve. Also, an existing optical fiber sensor can be easily attached to a paint valve.
Further, since the leak paint chamber has a buffer function for accumulating leak paint, it can be detected when a predetermined amount of leak paint is accumulated in the leak paint chamber, and it can be assumed that the paint leak has occurred at that time.

また、本発明は、前記ハウジングの前記リーク孔周りに雌ねじ部を形成し、前記アタッチメントは、前記雌ねじ部に螺合することで前記ハウジングに取り付けられる構造としたことを特徴とする。   Further, the present invention is characterized in that a female screw portion is formed around the leak hole of the housing, and the attachment is structured to be attached to the housing by being screwed into the female screw portion.

本発明によれば、ハウジングの表面にねじ加工を施すのみでアタッチメントを取り付けることができ、既存の塗料用バルブに光ファイバセンサを一層容易に付設することが可能となる。   According to the present invention, it is possible to attach the attachment by simply threading the surface of the housing, and it is possible to attach the optical fiber sensor to the existing paint valve more easily.

本発明によれば、既存の塗料用バルブにも容易に塗料漏れ検出用の光ファイバケーブルを付設することができる。   According to the present invention, an optical fiber cable for detecting paint leakage can be easily attached to an existing paint valve.

本発明に係る塗料漏れ検出装置の構成図である。It is a block diagram of the coating material leak detection apparatus which concerns on this invention. 塗料用バルブの動作説明図であり、（ａ）、（ｂ）はそれぞれ弁が開いた状態、閉じた状態を示す。It is operation | movement explanatory drawing of the valve | bulb for paints, (a), (b) shows the state which the valve opened, respectively. 塗料用バルブに塗料漏れが生じたときの塗料漏れ検出装置の作用説明図である。It is operation | movement explanatory drawing of the coating-material leak detection apparatus when the coating-material leak arises in the valve | bulb for coating materials. 塗料漏れ検出装置の外観斜視図である。It is an external appearance perspective view of a paint leak detection apparatus.

塗料用バルブ１は、例えば吹き付け用の塗装ガンＧに取り付けられる。図１および図２を参照して説明すると、塗料用バルブ１は、弁体２と弁体ケース３とから構成されるバルブユニット４と、このバルブユニット４を内蔵するハウジング５とを主な構成部材とする。ハウジング５には、弁体２を作動させるエア室６およびエア流路７と、弁体３の作動により開閉する塗料流路８と、弁体ケース３との間隙部Ｓに漏れたリーク塗料を外部に逃がすリーク孔９と、が形成されている。   The paint valve 1 is attached to a paint gun G for spraying, for example. Referring to FIGS. 1 and 2, the paint valve 1 mainly includes a valve unit 4 including a valve body 2 and a valve body case 3, and a housing 5 in which the valve unit 4 is built. A member. The housing 5 has an air chamber 6 and an air flow path 7 for operating the valve body 2, a paint flow path 8 that is opened and closed by the operation of the valve body 3, and leak paint leaking into the gap S between the valve body case 3. Leak holes 9 for escaping to the outside are formed.

弁体２は、弁体ケース３の内部を摺動するロッド２ａと、このロッド２ａに同軸に形成され、ロッド２ａよりも大径のピストン２ｂとを備えた形状からなる。ロッド２ａの先端は弁体ケース３の一端側から突出して塗料流路８に臨む。そして、ロッド２ａの弁体ケース３の他端側から突出した部分に前記ピストン２ｂが形成されている。   The valve body 2 has a shape including a rod 2a that slides inside the valve body case 3 and a piston 2b that is formed coaxially with the rod 2a and has a larger diameter than the rod 2a. The tip of the rod 2 a protrudes from one end side of the valve body case 3 and faces the paint flow path 8. And the piston 2b is formed in the part which protruded from the other end side of the valve body case 3 of the rod 2a.

弁体ケース３は、概ね筒形状を呈した部材であって、ケース外周に形成された雄ねじ部がハウジング５内に形成した雌ねじ部に螺合することでハウジング５に内蔵固定される。弁体ケース３の外周には、ハウジング５の内壁面に密着するパッキン１０が取り付けられている。   The valve body case 3 is a member having a generally cylindrical shape, and is internally fixed to the housing 5 by screwing a male screw portion formed on the outer periphery of the case with a female screw portion formed in the housing 5. A packing 10 that is in close contact with the inner wall surface of the housing 5 is attached to the outer periphery of the valve body case 3.

ハウジング５には前記ピストン２ｂが摺動するシリンダ室が形成され、その内、弁体ケース３とピストン２ｂとの間の室空間がエア室６を構成する。そして、このエア室６とハウジング５の外部とを連通するようにエア流路７が形成される。エア流路７のポートにはエア供給ホース１１が接続される。   A cylinder chamber in which the piston 2 b slides is formed in the housing 5, and a chamber space between the valve body case 3 and the piston 2 b constitutes an air chamber 6. An air flow path 7 is formed so that the air chamber 6 communicates with the outside of the housing 5. An air supply hose 11 is connected to the port of the air flow path 7.

前記シリンダ室の内、ピストン２ｂを挟んでエア室６と反対に形成される室空間には圧縮コイルばね１２が内蔵される。具体的に説明すると、前記シリンダ室はハウジング５の表面に臨むように開口形成されており、その表面開口部はねじ式のキャップ１３により塞がれている。前記圧縮コイルばね１２はこのキャップ１３とピストン２ｂとの間に介設されるものであり、常時、ピストン２ｂを弁体ケース３側に付勢する。   A compression coil spring 12 is built in a chamber space formed opposite to the air chamber 6 across the piston 2b in the cylinder chamber. More specifically, the cylinder chamber has an opening formed so as to face the surface of the housing 5, and the surface opening is closed by a screw-type cap 13. The compression coil spring 12 is interposed between the cap 13 and the piston 2b, and always urges the piston 2b toward the valve body case 3 side.

なお、キャップ１３の中央には孔１３ａが形成されており、ロッド２ａの他端はこの孔１３ａを通って外部に突出するようになっている。これは、弁体２の作動状態を外部から目視で確認できるようにするためである。   A hole 13a is formed in the center of the cap 13, and the other end of the rod 2a projects outside through the hole 13a. This is because the operating state of the valve body 2 can be visually confirmed from the outside.

弁体ケース３の一端寄りに形成される塗料流路８は、ロッド２ａが通る主流路８ａおよび吐出路８ｂと、主流路８ａに直交して連通する供給路８ｃとからなる。供給路８ｃのポートには塗料供給ホース１４が接続される。主流路８ａは、ロッド２ａ周りに塗料の流動空間ができる程度の径を有し、その流路一端側には弁体ケース３が臨み、流路他端側には吐出路８ｂが形成される。吐出路８ｂはハウジング５の外部に通じる孔であり、図２（ａ）に示すように、ロッド２ａが前進してこの吐出路８ｂ内に嵌り込むことで塗料流路８が閉じられる。そして、図２（ｂ）に示すように、エア室６にエアが供給されることにより圧縮コイルばね１２の付勢力に抗してピストン２ｂが移動し、ロッド２ａが後退することで主流路８ａを通して供給路８ｃと吐出路８ｂとが連通し、塗料流路８が開く。   The paint flow path 8 formed near one end of the valve body case 3 includes a main flow path 8a and a discharge path 8b through which the rod 2a passes, and a supply path 8c that communicates perpendicularly to the main flow path 8a. The paint supply hose 14 is connected to the port of the supply path 8c. The main flow path 8a has a diameter that allows a paint flow space around the rod 2a, the valve body case 3 faces one end of the flow path, and a discharge path 8b is formed on the other end of the flow path. . The discharge path 8b is a hole that communicates with the outside of the housing 5, and as shown in FIG. 2A, the rod 2a moves forward and fits in the discharge path 8b to close the paint flow path 8. Then, as shown in FIG. 2B, when air is supplied to the air chamber 6, the piston 2b moves against the urging force of the compression coil spring 12, and the rod 2a moves backward to retract the main flow path 8a. The supply path 8c and the discharge path 8b communicate with each other, and the paint flow path 8 is opened.

図２（ａ）のバルブ閉状態から図２（ｂ）のバルブ開状態となるときには、弁体２の作動タイミングと塗料の供給タイミングの適正な同期が重要であり、塗料用バルブ１は、正常な状態では、弁体２の作動時点から所定時間僅かに遅れて塗料流路８へ塗料が供給されるようになっている。しかしながら、経時に伴い塗料が主流路８ａからバルブユニット４の内蔵部側に漏れ、塗料が弁体ケース３内のロッド摺動部まで浸入した場合には、ロッド２ａの摺動抵抗が大きくなって弁体２の作動タイミングが遅れ、塗料の供給タイミングと合わなくなってしまう。   When the valve closed state shown in FIG. 2 (a) is changed to the valve open state shown in FIG. 2 (b), proper synchronization between the operation timing of the valve element 2 and the paint supply timing is important. In such a state, the coating material is supplied to the coating material flow path 8 slightly after a predetermined time from the operation point of the valve body 2. However, when the paint leaks from the main flow path 8a to the built-in portion of the valve unit 4 with time and the paint enters the rod sliding portion in the valve body case 3, the sliding resistance of the rod 2a increases. The operation timing of the valve body 2 is delayed, and the supply timing of the paint is not matched.

バルブユニット４の内蔵部側へのリーク塗料を検出する手段として、ハウジング５には、前記したように、弁体ケース３との間隙部Ｓに漏れたリーク塗料を外部に逃がすリーク孔９が形成されている。つまり、リーク孔９からハウジング５の外部に出されるリーク塗料を確認することで、バルブユニット４の内部へのリーク塗料の浸入を予知、或いは素早く検知できることとなり、塗料用バルブ１のメンテナンスを施すことで弁体２の作動遅れを未然に防止することができる。リーク孔９は例えばキリ孔からなる。   As a means for detecting leak paint to the built-in portion side of the valve unit 4, the housing 5 is formed with the leak hole 9 through which the leak paint leaked into the gap S with the valve body case 3 is released as described above. Has been. In other words, by confirming the leak paint discharged from the housing 5 from the leak hole 9, it is possible to predict or quickly detect the leak paint entering the valve unit 4, and to perform the maintenance of the paint valve 1. Thus, the operation delay of the valve body 2 can be prevented in advance. The leak hole 9 is made of, for example, a drill hole.

本発明の塗料漏れ検出装置１５は、リーク孔９からハウジング５の外部に出されるリーク塗料を検出する装置であって、リーク塗料室１６が形成され、このリーク塗料室１６がリーク孔９と連通するようにハウジング５に着脱自在に取り付けられるアタッチメント１７と、このアタッチメント１７に取り付けられ、リーク塗料室１６におけるリーク塗料の有無を検出する光ファイバセンサ１８と、を備えている。   The paint leakage detection device 15 according to the present invention is a device for detecting leak paint discharged from the leak hole 9 to the outside of the housing 5. A leak paint chamber 16 is formed, and the leak paint chamber 16 communicates with the leak hole 9. An attachment 17 that is detachably attached to the housing 5 and an optical fiber sensor 18 that is attached to the attachment 17 and detects the presence or absence of leak paint in the leak paint chamber 16 are provided.

アタッチメント１７は、例えば図４に示すように角状ブロック片を基体部とし、その内部に図３等に示すようにリーク塗料室１６が形成されている。アタッチメント１７は例えば金属ブロック片から構成される。アタッチメント１７の外面には雄ねじ部１７ａが形成され、そのねじ中心には流路が形成されている。ハウジング５のリーク孔９周りの外面には雌ねじ部１９が形成され、この雌ねじ部１９に雄ねじ部１７ａを螺合させることでアタッチメント１７がハウジング５に対して固定される。   For example, as shown in FIG. 4, the attachment 17 has a rectangular block piece as a base portion, and a leak paint chamber 16 is formed therein as shown in FIG. The attachment 17 is comprised from a metal block piece, for example. A male screw portion 17a is formed on the outer surface of the attachment 17, and a flow path is formed at the center of the screw. A female screw part 19 is formed on the outer surface of the housing 5 around the leak hole 9, and the attachment 17 is fixed to the housing 5 by screwing a male screw part 17 a into the female screw part 19.

リーク塗料室１６にリーク塗料が無いときには、光ファイバセンサ１８の先端部からの照射光がリーク塗料室１６の壁面に当たり、所定量の反射光が光ファイバセンサ１８に戻る。この反射光の信号によって、リーク塗料室１６にリーク塗料が無い、すなわち塗料用バルブ１に塗料漏れが生じていないことが判る。光ファイバセンサ１８の他端は例えば信号増幅用のアンプに接続し、アンプは制御部に接続している。   When there is no leak paint in the leak paint chamber 16, the irradiation light from the tip of the optical fiber sensor 18 hits the wall surface of the leak paint chamber 16, and a predetermined amount of reflected light returns to the optical fiber sensor 18. It can be seen from this reflected light signal that there is no leak paint in the leak paint chamber 16, that is, no paint leaks in the paint valve 1. The other end of the optical fiber sensor 18 is connected to an amplifier for signal amplification, for example, and the amplifier is connected to the control unit.

そして、図３に示すように、リーク塗料室１６にリーク塗料が浸入すると、光ファイバセンサ１８の照射光がリーク塗料室１６の壁面ではなくリーク塗料に当たるために、所定量の反射光が光ファイバセンサ１８に戻らず、これにより、塗料用バルブ１に塗料漏れが生じていることを検出できる。この場合、塗料漏れが生じた旨を周辺の作業者に知らせるべく、前記制御部を介して警報音を鳴らしたり、警報ランプを点灯させるなどの適宜な処置を採ることが望ましい。作業者は、その後、塗料用バルブ１を分解して清掃作業を行う。   As shown in FIG. 3, when the leak paint enters the leak paint chamber 16, the irradiation light of the optical fiber sensor 18 hits the leak paint instead of the wall surface of the leak paint chamber 16, so that a predetermined amount of reflected light is reflected by the optical fiber. Without returning to the sensor 18, it is possible to detect that paint leakage has occurred in the paint valve 1. In this case, it is desirable to take appropriate measures such as sounding an alarm sound or turning on an alarm lamp via the control unit in order to notify surrounding workers that paint leakage has occurred. Thereafter, the worker disassembles the paint valve 1 and performs a cleaning operation.

以上のように、リーク塗料室１６が形成され、このリーク塗料室１６がハウジング５のリーク孔９と連通するようにハウジング５に着脱自在に取り付けられるアタッチメント１７と、このアタッチメント１７に取り付けられ、リーク塗料室１６におけるリーク塗料の有無を検出する光ファイバセンサ１８と、を備えた塗料漏れ検出装置１５とすれば、アタッチメント１７のリーク塗料室１６はリーク塗料を溜めるバッファ機能を有することとなるので、リーク塗料室１６にリーク塗料が所定量溜まった時点で検出し、そのときを塗料漏れが生じたとすることができる。   As described above, the leak paint chamber 16 is formed, the attachment 17 that is detachably attached to the housing 5 so that the leak paint chamber 16 communicates with the leak hole 9 of the housing 5, and the leak paint chamber 16 is attached to the attachment 17. If the paint leak detection device 15 includes the optical fiber sensor 18 that detects the presence or absence of leak paint in the paint chamber 16, the leak paint chamber 16 of the attachment 17 has a buffer function for storing leak paint. This can be detected when a predetermined amount of leak paint has accumulated in the leak paint chamber 16, and it can be assumed that a paint leak has occurred.

例えば、光ファイバセンサ１８を直接ハウジング５に取り付けた場合、間隙部Ｓやリーク孔９などは容積が小さいことから、少量のリーク塗料でもこれらの空間が塞がれ、光ファイバセンサ１８が塗料漏れと検知してしまう。弁体２の作動遅れの原因となるバルブユニット４の内部へのリーク塗料の浸入は、間隙部Ｓへの浸入に比べると時間がかかりやすいことから、ごく少量の塗料が間隙部Ｓに浸入した時点では未だ弁体２は正常に作動していることが多い。   For example, when the optical fiber sensor 18 is directly attached to the housing 5, the gap S and the leak hole 9 have a small volume. Therefore, even a small amount of leak paint closes these spaces, and the optical fiber sensor 18 leaks paint. Will be detected. Since the intrusion of leak paint into the valve unit 4 causing the operation delay of the valve body 2 is more time consuming than the intrusion into the gap S, a very small amount of paint entered the gap S. In many cases, the valve body 2 is still operating normally at the time.

これに対し、例えば、間隙部Ｓへのリーク塗料の量がいくらになったときにバルブユニット４の内部に作動遅れとなる程度のリーク塗料が浸入するかを予め試験によりシミュレートしておき、その結果に基づいてリーク塗料室１６の大きさを決定すれば、弁体２の作動遅れが生じる直前段階で、問題となる塗料漏れが生じたと判断できる。したがって、弁体２が正常に作動しているにも拘わらず塗料用バルブ１を分解するという無駄な作業を省くことができる。なお、このようなバッファ室をハウジング５において加工形成することは困難であり、特に自動車の塗装ラインで塗装ガンＧが多数存在するような場合、それぞれの塗装ガンＧに取り付けられる既存の塗料用バルブ１毎にそのような加工を施すことは困難となる。   On the other hand, for example, it is simulated in advance by a test whether the amount of leak paint entering the gap portion S enters the inside of the valve unit 4 to the extent that leak paint enters the valve unit 4. If the size of the leak paint chamber 16 is determined based on the result, it can be determined that a problem paint leak has occurred immediately before the operation delay of the valve body 2 occurs. Therefore, it is possible to omit a wasteful work of disassembling the paint valve 1 in spite of the valve body 2 operating normally. In addition, it is difficult to process and form such a buffer chamber in the housing 5, and in particular, when there are a large number of paint guns G in the paint line of an automobile, existing paint valves attached to the paint guns G are provided. It becomes difficult to perform such processing every one.

また、アタッチメント１７を介して光ファイバセンサ１８を塗料用バルブ１に取り付けるので取り付け構造が簡単となり、特に、ハウジング５のリーク孔９周りに雌ねじ部１９を形成し、アタッチメント１７を雌ねじ部１９に螺合することでハウジング５に取り付ける構成とすれば、ハウジング５の表面にねじ加工を施すのみでアタッチメント１７を取り付けることができ、既存の塗料用バルブ１に光ファイバセンサ１８を容易に付設することができる。   Further, since the optical fiber sensor 18 is attached to the paint valve 1 via the attachment 17, the attachment structure is simplified. In particular, the female screw portion 19 is formed around the leak hole 9 of the housing 5, and the attachment 17 is screwed to the female screw portion 19. If it is configured to be attached to the housing 5 by combining, the attachment 17 can be attached only by screwing the surface of the housing 5, and the optical fiber sensor 18 can be easily attached to the existing paint valve 1. it can.

１ 塗料用バルブ
２ 弁体
３ 弁体ケース
４ バルブユニット
５ ハウジング
６ エア室
７ エア流路
８ 塗料流路
９ リーク孔
１５ 塗料漏れ検出装置
１６ リーク塗料室
１７ アタッチメント
１８ 光ファイバセンサ DESCRIPTION OF SYMBOLS 1 Paint valve 2 Valve body 3 Valve body case 4 Valve unit 5 Housing 6 Air chamber 7 Air flow path 8 Paint flow path 9 Leak hole 15 Paint leak detection device 16 Leak paint chamber 17 Attachment 18 Optical fiber sensor

Claims (2)

弁体および弁体ケースからなるバルブユニットと、
このバルブユニットを内蔵し、前記弁体を作動させるエア室およびエア流路と、前記弁体の作動により開閉する塗料流路と、前記弁体ケースとの間隙部に漏れたリーク塗料を外部に逃がすリーク孔と、が形成されるハウジングと、
を有した塗料用バルブの塗料漏れを検出する装置であって、
リーク塗料室が形成され、このリーク塗料室が前記リーク孔と連通するように前記ハウジングに着脱自在に取り付けられるアタッチメントと、
このアタッチメントに取り付けられ、前記リーク塗料室におけるリーク塗料の有無を検出する光ファイバセンサと、
を備えたことを特徴とする塗料用バルブの塗料漏れ検出装置。 A valve unit comprising a valve body and a valve body case;
This valve unit is built in, and the air chamber and air flow path for operating the valve body, the paint flow path that opens and closes by the operation of the valve body, and leaked paint leaked to the gap between the valve body case to the outside A leak hole that escapes, a housing formed with,
An apparatus for detecting paint leakage of a paint valve having
An attachment that is detachably attached to the housing such that a leak paint chamber is formed and the leak paint chamber communicates with the leak hole;
An optical fiber sensor attached to this attachment for detecting the presence or absence of leak paint in the leak paint chamber;
A paint leakage detecting device for a paint valve characterized by comprising: 前記ハウジングの前記リーク孔周りに雌ねじ部を形成し、
前記アタッチメントは、前記雌ねじ部に螺合することで前記ハウジングに取り付けられる構造としたことを特徴とする請求項１に記載の塗料用バルブの塗料漏れ検出装置。 Forming a female screw part around the leak hole of the housing;
The paint leakage detecting device for a paint valve according to claim 1, wherein the attachment is structured to be attached to the housing by being screwed into the female screw portion.
JP2009053978A 2009-03-06 2009-03-06 Paint leak detection device for paint valve Expired - Fee Related JP5308197B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2019115882A (en) * 2017-12-27 2019-07-18 旭サナック株式会社 Painting apparatus
CN110346089A (en) * 2019-08-07 2019-10-18 长沙皓欣工业设备有限公司 A kind of valve leakage detecting device
FR3100302A1 (en) * 2019-09-02 2021-03-05 Exel Industries Valve, coating product application system comprising such a valve
CN113790274A (en) * 2021-09-18 2021-12-14 朱梓琪 Outdoor air valve
US11396029B2 (en) 2019-09-02 2022-07-26 Exel Industries Valve and system for application of a covering product including such a valve

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Publication number Priority date Publication date Assignee Title
JPH05126669A (en) * 1991-04-26 1993-05-21 Kiyohara Masako Control unit with seal section breakage detecting system
JP2004243285A (en) * 2003-02-17 2004-09-02 Asahi Sunac Corp Detection device and method for packing deterioration in opening and closing valve for coating material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05126669A (en) * 1991-04-26 1993-05-21 Kiyohara Masako Control unit with seal section breakage detecting system
JP2004243285A (en) * 2003-02-17 2004-09-02 Asahi Sunac Corp Detection device and method for packing deterioration in opening and closing valve for coating material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019115882A (en) * 2017-12-27 2019-07-18 旭サナック株式会社 Painting apparatus
JP7048044B2 (en) 2017-12-27 2022-04-05 旭サナック株式会社 Painting equipment
CN110346089A (en) * 2019-08-07 2019-10-18 长沙皓欣工业设备有限公司 A kind of valve leakage detecting device
FR3100302A1 (en) * 2019-09-02 2021-03-05 Exel Industries Valve, coating product application system comprising such a valve
US11396029B2 (en) 2019-09-02 2022-07-26 Exel Industries Valve and system for application of a covering product including such a valve
CN113790274A (en) * 2021-09-18 2021-12-14 朱梓琪 Outdoor air valve
CN113790274B (en) * 2021-09-18 2024-01-26 湖南东麒能源有限公司 Outdoor air valve

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