JP2010119926A - Coating liquid supply system - Google Patents

Coating liquid supply system Download PDF

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JP2010119926A
JP2010119926A JP2008294027A JP2008294027A JP2010119926A JP 2010119926 A JP2010119926 A JP 2010119926A JP 2008294027 A JP2008294027 A JP 2008294027A JP 2008294027 A JP2008294027 A JP 2008294027A JP 2010119926 A JP2010119926 A JP 2010119926A
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branch pipe
branch
valve
pig
pipe
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JP5366514B2 (en
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Toshihisa Hosoya
俊寿 細谷
Yoshihiro Inagaki
良洋 稲垣
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IEC CO Ltd
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IEC CO Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating liquid supply system by which the inner wall of a branch pipe line is scraped and cleaned by a pig for the branched pipe and whose maintenance cost is low. <P>SOLUTION: The pig 7 for the branched pipe in a branch holder 4 is pushed and moved into a take-out block 5 by cleaning liquid pressure and after the pressure of the cleaning liquid in a main pipe 10 is reduced to zero, the cleaning liquid is injected into the branch pipe line 40 to push and move the pig 7 for branched pipe in the take-out block 5 to the branch holder 4 with the cleaning liquid pressure. The inner wall of the branch pipe line 40 is scraped and cleaned by the movement of the pig 7 for the branched pipe in the branch pipe line 40. Since coating liquid scum stuck on the inner wall of the branch pipe line is scraped and cleaned by the pig 7 for the branched pipe, it is not necessary to make the request of the periodical cleaning of the inner wall of the branch pipe line to a contractor and then the maintenance cost is made low. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ループテッドエンド式の塗装液供給システムに関する。   The present invention relates to a looped end type coating liquid supply system.

非特許文献１に示す、従来のループテッドエンド式の塗装液供給システムが知られている。
日本ピーシーエス株式会社のインターネットＷｅｂページ インターネット＜URL:http://www.j-pcs.com/pcsystem/index.html＞ A conventional looped end type coating liquid supply system shown in Non-Patent Document 1 is known.
Nippon PCS Internet Web Page Internet <URL: http://www.j-pcs.com/pcsystem/index.html>

上記従来技術は、下記に示す課題がある。
枝管路の内壁に塗料カスが付着するので、定期的に洗浄業者に依頼して管路内壁を洗浄する必要があり、メンテナンスコストが高いという課題がある。 The above prior art has the following problems.
Since paint residue adheres to the inner wall of the branch pipe, it is necessary to periodically ask the cleaning company to clean the inner wall of the pipe, and there is a problem that the maintenance cost is high.

本発明の目的は、枝管路内壁を、枝管用ピグによりカキ取り清掃することができ、メンテナンスコストが安価な塗装液供給システムの提供にある。   An object of the present invention is to provide a coating liquid supply system in which an inner wall of a branch pipe can be cleaned by oyster removal using a branch pipe pig and the maintenance cost is low.

（請求項１について）
主管路は、塗料タンク、電動塗料ポンプ、および塗料背圧弁を管路中に介設し、管路を環状に接続してなる。 (About claim 1)
The main pipeline is formed by interposing a paint tank, an electric paint pump, and a paint back pressure valve in the pipeline, and connecting the pipelines in an annular shape.

枝管路は、電動塗料ポンプの出口と塗料背圧弁の入口との間に位置する主管路に枝管路基端を接続し、分岐部取出口バルブと、排出バルブを連結した分岐ホルダーとを枝管路中に介設し、洗浄液注入バルブ、ブース取出バルブ、およびドレンバルブを連結した取出ブロックを枝管路先端に接続している。そして、取出ブロックと分岐ホルダーとの間の枝管路内に枝管用ピグを配し、水密的に移動可能にしている。   The branch pipe connects the branch pipe base end to the main pipe located between the outlet of the electric paint pump and the inlet of the paint back pressure valve, and branches the branch outlet valve and the branch holder connected to the discharge valve. An extraction block that is interposed in the pipeline and connects the cleaning liquid injection valve, the booth extraction valve, and the drain valve is connected to the tip of the branch pipeline. A branch pipe pig is arranged in the branch pipe between the take-out block and the branch holder so as to be movable in a watertight manner.

以下の様にして、分岐ホルダーより下流の枝管路内を洗浄する。
主管路内および枝管路内に洗浄液または塗料を充填した状態で、電動塗料ポンプを作動状態にし、塗料背圧弁を絞って主管路内の液圧力を上げる。 The inside of the branch pipe downstream from the branch holder is washed as follows.
With the cleaning liquid or paint filled in the main pipeline and the branch pipeline, the electric paint pump is activated and the paint back pressure valve is throttled to increase the fluid pressure in the main pipeline.

分岐部取出口バルブを開き、取出ブロックの、洗浄液注入バルブ、およびブース取出バルブを閉じ、ドレンバルブを開き、分岐ホルダー内の枝管用ピグを、主管路内の洗浄液圧力で押して取出ブロック内へ移動させることにより、枝管路内の洗浄液をドレンバルブを介して排出する。そして、洗浄液の排出後にドレンバルブを閉じる。
分岐ホルダー内の枝管用ピグが取出ブロック内へ移動する際に、枝管路内壁が枝管用ピグによりカキ取り清掃される。 Open the branch outlet valve, close the cleaning block injection valve and booth outlet valve of the extraction block, open the drain valve, and move the branch pipe pig in the branch holder into the extraction block by the cleaning liquid pressure in the main line. By doing so, the cleaning liquid in the branch pipe line is discharged through the drain valve. Then, the drain valve is closed after the cleaning liquid is discharged.
When the branch pipe pig in the branch holder moves into the take-out block, the inner wall of the branch pipe is removed and cleaned by the branch pipe pig.

つぎに、電動塗料ポンプを停止し、塗料背圧弁を開放して主管路内の液圧力をゼロにする。そして、洗浄液注入バルブを開き、洗浄液を枝管路内へ注入し、取出ブロック内の枝管用ピグを洗浄液圧力で押して分岐ホルダー内へ移動させ、移動完了後に分岐ホルダーの排出バルブを閉める。
取出ブロック内の枝管用ピグが分岐ホルダー内へ移動する際に、枝管路内壁が枝管用ピグによりカキ取り清掃される。 Next, the electric paint pump is stopped, the paint back pressure valve is opened, and the liquid pressure in the main line is made zero. Then, the cleaning liquid injection valve is opened, the cleaning liquid is injected into the branch pipe, the branch pipe pig in the take-out block is pushed by the cleaning liquid pressure and moved into the branch holder, and the discharge valve of the branch holder is closed after the movement is completed.
When the branch pipe pig in the take-out block moves into the branch holder, the inner wall of the branch pipe is removed and cleaned by the branch pipe pig.

枝管路内壁に付着した塗料カスを枝管用のピグによりカキ取り清掃するので、業者に定期的に枝管路内壁の洗浄を依頼する必要がなく、メンテナンスコストが安価である。   Since the paint residue adhering to the inner wall of the branch pipe is removed by oysters using a branch pipe, it is not necessary to periodically ask the supplier to clean the inner wall of the branch pipe, and the maintenance cost is low.

（請求項２について）
枝管用のピグは、両端に位置する一対の球形部と、中央に位置するピグ検出用のボビン状部と、各球形部とボビン状部の左右端とを連結する円柱部とからなる。
両端の球形部により、枝管路内をピグが円滑に移動することができ、ボビン状部の径大な端により、枝管路内壁に付着したカスを確実にカキ取ることができる。 (About claim 2)
The branch pipe pig is composed of a pair of spherical portions located at both ends, a bobbin portion for pig detection located at the center, and a cylindrical portion connecting each spherical portion and the left and right ends of the bobbin portion.
Due to the spherical portions at both ends, the pig can move smoothly in the branch conduit, and the debris adhering to the inner wall of the branch conduit can be reliably removed by the large end of the bobbin-shaped portion.

（請求項３について）
枝管用のピグの円柱部に磁性体を埋設し、取出ブロックおよび分岐ホルダーに、磁性体を検出可能なピグセンサを配している。
ピグセンサが出力するセンサ信号により、取出ブロックまたは分岐ホルダー内へ枝管用のピグが到達したか否かを容易に把握することができる。 (Claim 3)
A magnetic body is embedded in the cylindrical portion of the branch pipe pig, and a pig sensor capable of detecting the magnetic body is disposed on the take-out block and the branch holder.
From the sensor signal output by the pig sensor, it is possible to easily grasp whether or not the branch pipe has reached the extraction block or the branch holder.

塗装液供給システムは、塗料タンク、電動塗料ポンプ、および塗料背圧弁を管路中に介設し、管路を環状に接続してなる主管路と、電動塗料ポンプの出口と塗料背圧弁の入口との間に位置する主管路に枝管路基端を接続し、分岐部取出口バルブと、排出バルブが付いた分岐ホルダーとを枝管路中に介設し、洗浄液注入バルブ、ブース取出バルブ、およびドレンバルブが付いた取出ブロックを管路先端に接続した枝管路と、取出ブロックから分岐ホルダーの間の枝管路内を水密的に移動可能な枝管用ピグとを備える。   The coating liquid supply system is composed of a main tank formed by connecting a paint tank, an electric paint pump, and a paint back pressure valve in the pipe, and connecting the pipes in an annular shape, an outlet of the electric paint pump, and an inlet of the paint back pressure valve. A branch pipe base end is connected to the main pipe line positioned between the branch pipe outlet valve and a branch holder with a discharge valve interposed in the branch pipe, and a cleaning liquid injection valve, a booth take-off valve, And a branch pipe that connects a take-out block with a drain valve to the end of the pipe, and a branch pipe pig that can move in a watertight manner in the branch pipe between the take-out block and the branch holder.

枝管路内の洗浄は、以下の様にして行う。
各管路内に洗浄液または塗料を充填した状態で、電動塗料ポンプを作動状態にし、塗料背圧弁を絞って主管路内の液圧力を上げ、分岐部取出口バルブおよびドレンバルブを開き、分岐ホルダー内の枝管用ピグを、主管路内の洗浄液圧力で押して取出ブロック内へ移動させ、枝管路内の洗浄液をドレンバルブを介して排出し、洗浄液の排出後にドレンバルブを閉じる。 The branch pipes are cleaned as follows.
With each liquid line filled with cleaning liquid or paint, the electric paint pump is activated, the paint back pressure valve is throttled to increase the liquid pressure in the main line, the branch outlet valve and drain valve are opened, and the branch holder The branch pipe pig is pushed by the cleaning liquid pressure in the main pipe and moved into the take-out block, the cleaning liquid in the branch pipe is discharged through the drain valve, and the drain valve is closed after discharging the cleaning liquid.

つぎに、電動塗料ポンプを停止し、塗料背圧弁を開放して主管路内の洗浄液圧力をゼロにする。そして、洗浄液注入バルブを開き、洗浄液を枝管路内へ注入し、取出ブロック内の枝管用ピグを洗浄液圧力で押して分岐ホルダー内へ移動させ、分岐ホルダーの排出バルブを閉める。   Next, the electric paint pump is stopped, the paint back pressure valve is opened, and the cleaning liquid pressure in the main pipeline is made zero. Then, the cleaning liquid injection valve is opened, the cleaning liquid is injected into the branch pipe, the branch pipe pig in the take-out block is pushed by the cleaning liquid pressure and moved into the branch holder, and the discharge valve of the branch holder is closed.

枝管用のピグが枝管路内を移動する際に、枝管路内壁がカキ取り清掃される。枝管路内壁に付着した塗料カスを枝管用ピグによりカキ取り清掃するため、業者に定期的に枝管路内壁の洗浄を依頼する必要がなく、メンテナンスコストが安価である。   When the branch pipe pig moves in the branch pipe, the inner wall of the branch pipe is removed and cleaned. Since the paint residue adhering to the inner wall of the branch pipe is removed by oysters using the branch pipe, it is not necessary to periodically ask the contractor to clean the inner wall of the branch pipe, and the maintenance cost is low.

本発明の実施例１の塗装液供給システムＴを図１〜図４に基づいて説明する。
塗装液供給システムＴは、塗料タンク１１、電動塗料ポンプ１２、および塗料背圧弁１３を管路中に介設し、管路を環状に接続してなる主管路１０と、管路途中にランチャー側バルブ２１とピグランチャー管２とを介設したランチャー管路２０と、管路途中にキャッチャー側バルブ３１とピグキャッチャー管３とを介設したキャッチャー管路３０と、分岐部取出口バルブ４１、分岐ホルダー４、および取出ブロック５を順に接続した枝管路４０と、主管路ピグ６と、枝管用ピグ７と、制御器（図示せず）とを備える。また、主管路１０には、管路内を循環する塗料の圧力を検出するための圧力センサと、管路内を循環する塗料の循環量を検出するための流量センサとが配されている。 A coating liquid supply system T according to a first embodiment of the present invention will be described with reference to FIGS.
The coating liquid supply system T includes a paint tank 11, an electric paint pump 12, and a paint back pressure valve 13 in the pipeline, and a main pipeline 10 formed by connecting the pipelines in a ring shape, and a launcher side in the pipeline. A launcher pipe 20 having a valve 21 and a piglancher pipe 2 interposed therein, a catcher pipe 30 having a catcher side valve 31 and a pig catcher pipe 3 interposed in the middle of the pipe, a branch outlet valve 41, a branch A branch pipe 40 in which the holder 4 and the take-out block 5 are sequentially connected, a main pipe pig 6, a branch pipe pig 7, and a controller (not shown) are provided. The main pipe 10 is provided with a pressure sensor for detecting the pressure of the paint circulating in the pipe and a flow rate sensor for detecting the amount of the paint circulating in the pipe.

塗料タンク１１は、塗装を行うための塗料が入れられている。
電動塗料ポンプ１２は、塗料を主管路１０内で循環させるためのものであり、塗料を循環させることにより、主管路１０内の塗料に圧力がかかる。
塗料背圧弁１３は、エアオペレート式であり、通電量により開度を増減することができる。 The paint tank 11 is filled with paint for painting.
The electric paint pump 12 is for circulating the paint in the main pipeline 10, and pressure is applied to the paint in the main pipeline 10 by circulating the paint.
The paint back pressure valve 13 is an air operated type, and the opening degree can be increased or decreased depending on the energization amount.

ランチャー管路２０は、電動塗料ポンプ１２の出口より下流の主管路１０に基端を接続し、管路先端を他の塗装ユニット（図示せず）に連結している。
ピグランチャー管２は、ランチャードレインバルブ（図示せず）を配設したドレイン管２２と、圧抜き弁２３とを連結している（図２参照）。 The launcher pipe line 20 has a base end connected to the main pipe line 10 downstream from the outlet of the electric paint pump 12, and a pipe tip connected to another coating unit (not shown).
The piglancher pipe 2 connects a drain pipe 22 provided with a launcher drain valve (not shown) and a pressure relief valve 23 (see FIG. 2).

キャッチャー管路３０は、枝管路４０の基端接続部位より下流位置の主管路１０に管路一方端を接続し、管路他方端にドレン管３２を接続している。
ピグキャッチャー管３には、主管路ピグ６の磁石（磁性体）を検出するためのリードスイッチｓ１（ピグセンサ）と、リードスイッチの接点が閉成すると作動するパトライト３３とが配設されている。また、洗浄液バルブを配設した洗浄液管が接続されている。
分岐ホルダー４は、一方側が分岐部取出口バルブ４１の下流に接続され、排出バルブ４２を配設した排出管４３をホルダー途中に接続している。 The catcher pipeline 30 has one end of the pipeline connected to the main pipeline 10 located downstream from the proximal end connection portion of the branch pipeline 40, and a drain tube 32 connected to the other end of the pipeline.
The pig catcher tube 3 is provided with a reed switch s1 (pig sensor) for detecting the magnet (magnetic material) of the main pipe pig 6 and a patrol light 33 that operates when the reed switch contact is closed. Further, a cleaning liquid pipe provided with a cleaning liquid valve is connected.
One side of the branch holder 4 is connected to the downstream side of the branch portion outlet valve 41, and a discharge pipe 43 provided with a discharge valve 42 is connected in the middle of the holder.

取出ブロック５は、洗浄液注入バルブ５１を配設した洗浄液注入管５２と、ブース取出バルブ５３を配設したブース取出配管５４と、ドレンバルブ５５を配設したドレン管５６とを接続している。ブース取出バルブ５３の下流のブース取出配管５４には、塗装装置（図示せず）が接続され、塗装時には、塗装装置から塗装指令信号が送出される。
なお、分岐ホルダー４および取出ブロック５にも、枝管用ピグ７の磁石（磁性体）を検出するためのリードスイッチ（ピグセンサ）が配設されている。 The extraction block 5 connects a cleaning liquid injection pipe 52 provided with a cleaning liquid injection valve 51, a booth extraction pipe 54 provided with a booth extraction valve 53, and a drain pipe 56 provided with a drain valve 55. A coating device (not shown) is connected to the booth extraction pipe 54 downstream of the booth extraction valve 53, and a coating command signal is sent from the coating device at the time of painting.
The branch holder 4 and the take-out block 5 are also provided with a reed switch (pig sensor) for detecting the magnet (magnetic body) of the branch pipe pig 7.

主管路ピグ６は、両端に位置する球形部６１、６１と、中央に位置するピグ検出用のボビン状部６２と、球形部６１、６１とボビン状部６２の左右端とを連結する円柱部６３とからなる。なお、主管路ピグ６内には磁石（磁性体）が埋設されている。   The main pipe pig 6 includes spherical portions 61 and 61 located at both ends, a bobbin portion 62 for pig detection located at the center, and a cylindrical portion that connects the spherical portions 61 and 61 and the left and right ends of the bobbin portion 62. 63. A magnet (magnetic material) is embedded in the main pipe pig 6.

枝管用ピグ７は、両端に位置する球形部７１、７１と、中央に位置するピグ検出用のボビン状部７２と、球形部７１、７１とボビン状部７２の左右端とを連結する円柱部７３とからなる。なお、主管路ピグ６内には磁石（磁性体）が埋設されている。
制御器は、電動塗料ポンプの能力および塗料背圧弁１３の開度制御を司る。 The branch pipe pig 7 includes spherical portions 71 and 71 located at both ends, a bobbin portion 72 for pig detection located in the center, and a cylindrical portion that connects the spherical portions 71 and 71 and the left and right ends of the bobbin portion 72. 73. A magnet (magnetic material) is embedded in the main pipe pig 6.
The controller controls the capacity of the electric paint pump and the opening degree control of the paint back pressure valve 13.

つぎに、枝管路の塗料抜き、主管路の塗料抜き、および枝管路の洗浄を、利点とともに述べる。
（枝管路４０の塗料抜き）
塗装作業が終了し、塗料循環の停止が指示されると、制御器は、電動塗料ポンプ１２を停止（通電停止）し、塗料背圧弁１３を開放状態（通電停止）にする。
圧力ゼロ＆流量ゼロ状態であることを、圧力センサおよび流量センサからのセンサ信号により制御器が確認する。 Next, the paint removal of the branch pipe, the paint removal of the main pipe, and the cleaning of the branch pipe will be described together with advantages.
(Paint removal from branch pipe 40)
When the painting operation is finished and an instruction to stop the circulation of the paint is given, the controller stops the electric paint pump 12 (energization is stopped) and opens the paint back pressure valve 13 (energization is stopped).
The controller confirms that the pressure is zero and the flow rate is zero based on sensor signals from the pressure sensor and the flow rate sensor.

塗料回収開始準備として、ブース取出バルブ５３を手動で閉弁する。
つぎに、洗浄液注入バルブ５１を手動で開弁して、洗浄液注入管５２から洗浄剤（親水シンナー）を枝管路４０内へ加圧注入する。 As preparation for starting paint recovery, the booth take-off valve 53 is manually closed.
Next, the cleaning liquid injection valve 51 is manually opened, and a cleaning agent (hydrophilic thinner) is pressurized and injected into the branch pipe line 40 from the cleaning liquid injection pipe 52.

加圧注入する洗浄剤により枝管用ピグ７が主管路１０方向へ押し戻され、これにより、枝管路４０内の塗料が主管路１０内へ回収される。
枝管用ピグ７が分岐ホルダー４へ到達したことを、分岐ホルダー４内のリードスイッチ（ピグセンサ）が検知すると、塗料回収が完了したと見なす。
洗浄液注入バルブ５１を手動で閉弁（洗浄剤の注入終了）し、枝管路の塗料抜きを終える。 The branch pipe pig 7 is pushed back in the direction of the main pipe line 10 by the cleaning agent injected under pressure, whereby the paint in the branch pipe line 40 is collected into the main pipe line 10.
When the reed switch (pig sensor) in the branch holder 4 detects that the branch pipe pig 7 has reached the branch holder 4, it is considered that the paint recovery has been completed.
The cleaning liquid injection valve 51 is manually closed (injection of the cleaning agent), and the paint removal from the branch pipe is completed.

（主管路１０の塗料抜き）
塗装作業が終了し、塗料循環の停止が指示されると、制御器は、電動塗料ポンプ１２を停止（通電停止）し、塗料背圧弁１３を開放状態（通電停止）にする。
送り側バルブ１４、戻り側バルブ１５を手動で閉弁状態にする。 (Remove paint from main line 10)
When the painting operation is finished and an instruction to stop the circulation of the paint is given, the controller stops the electric paint pump 12 (energization is stopped) and opens the paint back pressure valve 13 (energization is stopped).
The feed side valve 14 and the return side valve 15 are manually closed.

洗浄剤（親水シンナー）の主管路１０内への加圧注入を、ピグランチャー管２のドレイン管２２から開始するとともに、ランチャー側バルブ２１およびキャッチャー側バルブ３１を手動で開放状態にする。そして、分岐部取出口バルブ４１を手動で閉弁する。   The pressure injection of the cleaning agent (hydrophilic thinner) into the main pipe line 10 is started from the drain pipe 22 of the piglancher pipe 2, and the launcher side valve 21 and the catcher side valve 31 are manually opened. Then, the branch outlet valve 41 is manually closed.

ピグランチャー管２内の主管路ピグ６が洗浄剤により押され、ドレン管３２から塗料を回収する。
主管路ピグ６がピグキャッチャー管３に到達したことをリードスイッチｓ１が検出すると、主管路１０の塗料抜きが終了したと見なす。
そして、ランチャー側バルブ２１を手動で閉弁状態にし、ランチャー側圧抜き弁を手動で開弁し、キャッチャー側バルブ３１を手動で閉弁状態にし、キャッチャー側圧抜き弁を手動で開弁する。
主管路圧抜き弁を手動で開弁状態にし、主管路内圧をゼロにする。 The main pipe pig 6 in the piglancher pipe 2 is pushed by the cleaning agent, and the paint is collected from the drain pipe 32.
When the reed switch s1 detects that the main pipe pig 6 has reached the pig catcher pipe 3, it is considered that the paint removal from the main pipe 10 has been completed.
Then, the launcher side valve 21 is manually closed, the launcher side pressure release valve is manually opened, the catcher side valve 31 is manually closed, and the catcher side pressure release valve is manually opened.
Manually open the main line pressure relief valve to zero the main line pressure.

（枝管路４０の洗浄）
枝管用ピグ７は分岐ホルダー４内にあり、主管路ピグ６は、ピグキャッチャー管３にあり、分岐部取出口バルブ４１は開弁状態にある。
枝管路４０の洗浄が指示されると、制御器は、電動塗料ポンプ１２を作動（通電）し、塗料背圧弁１３を絞った状態（通電）にし、主管路１０内の洗浄剤の圧力を上げる。 (Washing of branch pipe 40)
The branch pipe pig 7 is in the branch holder 4, the main pipe pig 6 is in the pig catcher pipe 3, and the branch outlet valve 41 is open.
When the washing of the branch pipe 40 is instructed, the controller operates (energizes) the electric paint pump 12 to bring the paint back pressure valve 13 into the throttled state (energized), and sets the pressure of the cleaning agent in the main pipe 10. increase.

主管路内圧力＞枝管路内圧力となるため、主管路１０内の洗浄剤の圧力により、分岐ホルダー４内の枝管用ピグ７が取出ブロック５方向へ押され、ドレンバルブ５５を手動開弁しているドレン管５６からドレン管内洗浄剤（廃液）が排出される。   Since the pressure in the main pipe line> the pressure in the branch pipe line, the pressure of the cleaning agent in the main pipe line 10 pushes the branch pipe pig 7 in the branch holder 4 toward the take-out block 5 and opens the drain valve 55 manually. The drain pipe cleaning agent (waste liquid) is discharged from the drain pipe 56 that is running.

この際、枝管路内壁に付着した塗料カスを枝管用ピグ７がカキ取るので、業者に定期的に枝管路内壁の洗浄を依頼する必要がなく、メンテナンスコストが安価である。なお、枝管用ピグ７は、球形部７１、７１と、ボビン状部７２と、円柱部７３とからなるため、両端の球形部７１、７１により、枝管路４０内を枝管用ピグ７が円滑に移動することができ、ボビン状部７２の径大な端により、枝管路４０の内壁に付着したカスを確実にカキ取ることができる。   At this time, the paint residue adhering to the inner wall of the branch pipe is oystered by the pig 7 for the branch pipe, so that it is not necessary to periodically ask the trader to clean the inner wall of the branch pipe, and the maintenance cost is low. The branch pipe pig 7 is composed of spherical parts 71 and 71, a bobbin-like part 72, and a cylindrical part 73. Therefore, the branch pipe pig 7 is smoothly moved in the branch pipe 40 by the spherical parts 71 and 71 at both ends. By the large end of the bobbin-shaped portion 72, the residue attached to the inner wall of the branch pipe 40 can be surely removed.

枝管用ピグ７が取出ブロック５に到達したことを取出ブロック５のリードスイッチ（ピグセンサ）が検出すると、枝管路４０の洗浄（往路）が終了したと見なし、制御器が電動塗料ポンプ１２を停止（通電停止）し、塗料背圧弁１３を開放状態（通電停止）にする。 圧力ゼロ＆流量ゼロ状態であることを、圧力センサおよび流量センサからのセンサ信号により制御器が確認する。   When the reed switch (pig sensor) of the take-out block 5 detects that the branch pipe 7 has reached the take-out block 5, it is considered that the branch pipe 40 has been cleaned (outward), and the controller stops the electric paint pump 12 (Energization is stopped) and the paint back pressure valve 13 is opened (energization is stopped). The controller confirms that the pressure is zero and the flow rate is zero based on sensor signals from the pressure sensor and the flow rate sensor.

洗浄液注入バルブ５１を手動で開弁して、洗浄剤（親水シンナー）の枝管路４０内への加圧注入を開始し、洗浄剤により取出ブロック５の枝管用ピグ７を分岐ホルダー４方向へ押し出す（復路洗浄）。この際、枝管路内壁に付着した塗料カスを枝管用ピグ７がカキ取る。   The cleaning liquid injection valve 51 is manually opened to start pressurizing injection of the cleaning agent (hydrophilic thinner) into the branch conduit 40, and the branch pipe pig 7 of the extraction block 5 is moved toward the branch holder 4 by the cleaning agent. Extrude (return path cleaning). At this time, the branch pipe pig 7 removes paint residue adhering to the inner wall of the branch pipe.

つぎに、洗浄液注入バルブ５１からの洗浄剤の枝管路４０内への加圧注入を停止し、主管路１０の洗浄液圧力により枝管用ピグ７を取出ブロック５方向へ押し出す。
枝管用ピグ７が取出ブロック５に到達したことを取出ブロック５のリードスイッチ（ピグセンサ）で確認する。ドレン管５６のドレンバルブ５５を手動で閉弁し、枝管路４０の洗浄（復路洗浄）が終了する。 Next, the pressure injection of the cleaning agent from the cleaning liquid injection valve 51 into the branch pipe 40 is stopped, and the branch pipe pig 7 is pushed out toward the take-out block 5 by the cleaning liquid pressure of the main pipe 10.
It is confirmed by the reed switch (pig sensor) of the extraction block 5 that the branch pipe pig 7 has reached the extraction block 5. The drain valve 55 of the drain pipe 56 is manually closed, and the cleaning of the branch pipe line 40 (return path cleaning) is completed.

主管路ピグ６内に磁石（磁性体）を埋設し、磁石（磁性体）を検出するためのリードスイッチ（ピグセンサ）を分岐ホルダー４および取出ブロック５に配設している。
このため、ピグセンサが出力するセンサ信号により、取出ブロック５または分岐ホルダー４内へ枝管用ピグ７が到達したか否かを容易に把握することができる。 A magnet (magnetic body) is embedded in the main pipe pig 6, and a reed switch (pig sensor) for detecting the magnet (magnetic body) is disposed in the branch holder 4 and the take-out block 5.
Therefore, it is possible to easily grasp whether or not the branch pipe pig 7 has reached the take-out block 5 or the branch holder 4 from the sensor signal output by the pig sensor.

本発明の実施例１に係る塗装液供給システムの配管図である。It is a piping diagram of the coating liquid supply system which concerns on Example 1 of this invention. その塗装液供給システムに用いるピグランチャー管の構造を示す説明図である。It is explanatory drawing which shows the structure of the piglancher pipe | tube used for the coating liquid supply system. その塗装液供給システムに用いるピグキャッチャー管の構造を示す説明図である。It is explanatory drawing which shows the structure of the pig catcher pipe | tube used for the coating liquid supply system. その塗装液供給システムに用いる取出ブロックの構造を示す説明図である。It is explanatory drawing which shows the structure of the extraction block used for the coating liquid supply system.

符号の説明Explanation of symbols

Ｔ 塗装液供給システム
２ ピグランチャー管
３ ピグキャッチャー管
４ 分岐ホルダー
５ 取出ブロック
６ 主管路ピグ
７ 枝管用ピグ
１０ 主管路
１１ 塗料タンク
１２ 電動塗料ポンプ
１３ 塗料背圧弁
２０ ランチャー管路
２１ ランチャー側バルブ
３０ キャッチャー管路
３１ キャッチャー側バルブ
４０ 枝管路
４１ 分岐部取出口バルブ
５５ ドレンバルブ T coating liquid supply system 2 piglancher pipe 3 pig catcher pipe 4 branch holder 5 take-out block 6 main pipe pig 7 branch pipe pig 10 main pipe 11 paint tank 12 electric paint pump 13 paint back pressure valve 20 launcher pipe 21 launcher side valve 30 Catcher pipe 31 Catcher side valve 40 Branch pipe 41 Branch outlet valve 55 Drain valve

Claims (3)

塗料タンク、電動塗料ポンプ、および塗料背圧弁を管路中に介設し、管路を環状に接続してなる主管路と、
前記電動塗料ポンプの出口と前記塗料背圧弁の入口との間に位置する主管路に枝管路基端を接続し、分岐部取出口バルブと、排出バルブを連結した分岐ホルダーとを枝管路中に介設し、洗浄液注入バルブ、ブース取出バルブ、およびドレンバルブを連結した取出ブロックを枝管路先端に接続した枝管路と、
前記取出ブロックと前記分岐ホルダーとの間の枝管路内を水密的に移動可能な枝管用ピグとを備え、
洗浄液または塗料を各管路内に充填した状態で、前記電動塗料ポンプを作動状態にし、前記塗料背圧弁を絞って主管路内の液圧力を上げ、
前記分岐部取出口バルブおよび前記取出ブロックの前記ドレンバルブを開いて、分岐ホルダー内の枝管用ピグを洗浄液圧力で押して取出ブロック内へ移動させ、枝管路内の洗浄液を排出した後に前記ドレンバルブを閉じ、
前記電動塗料ポンプを停止し、前記塗料背圧弁を開放して主管路内の液圧力をゼロにし、
前記洗浄液注入バルブを開き、前記洗浄液を枝管路内へ注入し、取出ブロック内の前記枝管用ピグを洗浄液圧力で押して分岐ホルダー内へ移動させることにより枝管路内を洗浄することを特徴とする塗装液供給システム。 A main line formed by connecting a paint tank, an electric paint pump, and a paint back pressure valve in the pipe, and connecting the pipes in an annular shape;
A branch pipe base end is connected to a main pipe line located between the outlet of the electric paint pump and the inlet of the paint back pressure valve, and a branch portion outlet valve and a branch holder connected to a discharge valve are connected in the branch pipe line. A branch pipe line connected to the tip of the branch pipe line, and a removal block connecting the cleaning liquid injection valve, the booth take-off valve, and the drain valve;
A branch pipe pig that is watertightly movable in the branch pipe path between the take-out block and the branch holder;
With the cleaning liquid or paint filled in each pipeline, the electric paint pump is activated, the paint back pressure valve is throttled to increase the fluid pressure in the main pipeline,
The drain valve of the branch part outlet valve and the drain block of the outlet block is opened, the branch pipe in the branch holder is pushed by the cleaning liquid pressure and moved into the outlet block, and the cleaning liquid in the branch pipe is discharged. Close
Stop the electric paint pump, open the paint back pressure valve to zero the fluid pressure in the main line,
The cleaning liquid injection valve is opened, the cleaning liquid is injected into the branch pipe, and the branch pipe is cleaned by pushing the branch pipe in the take-out block with the cleaning liquid pressure and moving it into the branch holder. Coating liquid supply system. 前記枝管用のピグは、両端に位置する一対の球形部と、中央に位置するピグ検出用のボビン状部と、各球形部と前記ボビン状部の左右端とを連結する円柱部とからなることを特徴とする請求項１に記載の塗装液供給システム。   The branch pipe pig comprises a pair of spherical parts located at both ends, a bobbin part for pig detection located in the center, and a cylindrical part connecting each spherical part and the left and right ends of the bobbin part. The coating liquid supply system according to claim 1. 前記枝管用のピグ内に磁性体を埋設し、
前記取出ブロックおよび前記分岐ホルダーに、前記磁性体を検出可能なピグセンサを配したことを特徴とする請求項２に記載の塗装液供給システム。 A magnetic material is embedded in the branch pipe pig,
The coating liquid supply system according to claim 2, wherein a pig sensor capable of detecting the magnetic material is arranged on the take-out block and the branch holder.
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JP5659311B1 (en) * 2014-02-15 2015-01-28 大森機械工業株式会社 Pig cleaning device
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CN103586159A (en) * 2013-10-09 2014-02-19 江苏正德力机械科技有限公司 Automatic glue applicator with cleaning function
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KR102026817B1 (en) * 2018-08-28 2019-09-30 에쓰온(주) Residual liquid-reducing pigging system of manifold for liquid filling
JP7441216B2 (en) 2018-10-19 2024-02-29 エクセル インダストリー Fluid spray equipment and associated methods for moving fluids

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