JPH10272395A - Coating booth with air feed and exhaust device used therefor - Google Patents

Coating booth with air feed and exhaust device used therefor

Info

Publication number
JPH10272395A
JPH10272395A JP9080365A JP8036597A JPH10272395A JP H10272395 A JPH10272395 A JP H10272395A JP 9080365 A JP9080365 A JP 9080365A JP 8036597 A JP8036597 A JP 8036597A JP H10272395 A JPH10272395 A JP H10272395A
Authority
JP
Japan
Prior art keywords
air
exhaust chamber
exhaust
chamber
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9080365A
Other languages
Japanese (ja)
Other versions
JP3595101B2 (en
Inventor
Tamon Shiyouji
司 太 聞 庄
Katsuaki Yamamoto
本 勝 昭 山
Hiroaki Mizumoto
本 宏 晃 水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trinity Industrial Corp
Original Assignee
Trinity Industrial Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trinity Industrial Corp filed Critical Trinity Industrial Corp
Priority to JP8036597A priority Critical patent/JP3595101B2/en
Publication of JPH10272395A publication Critical patent/JPH10272395A/en
Application granted granted Critical
Publication of JP3595101B2 publication Critical patent/JP3595101B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/46Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
    • B05B14/468Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material with scrubbing means arranged below the booth floor

Abstract

PROBLEM TO BE SOLVED: To reduce the frequency and the time and labor for cleaning work, by reducing the amount of a coating material adhered onto the inner wall of an exhaust chamber of a coating booth with an air feed system. SOLUTION: Polluted air in a coating booth 3 is introduced, from an opening 7 formed on a flow plate 6, into an exhaust device 8 formed of a cylindrical body. As the gas-liquid contact is performed for the polluted air very time the air passes first and second Venturi sections V1 and V2 formed on the upstream side and also the downstream side of a flow path 12 of the device 8, the collection efficiency of coating material mist is improved. Water drops collecting the coating material mist in respective Venturi sections V1 and V2 are blown almost horizontally out of an air plenum 14 formed on the lower end of the cylindrical body toward a drain line 11 through the vicinity of the bottom face 4G of an exhaust chamber 4. As the most part of water drops blown out is dropped into the drain line 11 and brought outside the coating booth without scattering up around, the adhesion amount of the coating material on the walls and the bottom face of the exhaust chamber is reduced and also the frequency and the time and labor for the cleaning work are reduced by the arrangement.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、塗装室内を流下す
る空調空気を塗料ミストと共に当該塗装室の床下に形成
された排気室に吸い込んだ後、塗料ミストを分離させて
空気を浄化する給気付塗装ブースとこれに使用する排気
処理装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply for purifying air by separating mist of paint from air-conditioned air flowing down in a paint chamber together with paint mist into an exhaust chamber formed under the floor of the paint chamber. The present invention relates to a paint booth and an exhaust treatment device used for the booth.

【0002】[0002]

【従来の技術】図3は、自動車ボディなどの塗装に用い
られる給気付塗装ブース31を示し、天井部に形成され
た給気室2から空調空気を塗装室3内に流下させ、塗装
機Tからオーバースプレーされた塗料ミストを含んだ汚
染空気を塗装室3の下方に形成された排気室4に吸い込
んで浄化処理するようにしている。そして、排気室4に
は、前記汚染空気を気液接触させて浄化する排気処理装
置32が形成されると共に、その下流側には当該排気処
理装置32で浄化された汚染空気を外部に排出する排気
ダクト10が例えば排気室4の左側の側壁4Lに開口形
成されている。
2. Description of the Related Art FIG. 3 shows a painting booth 31 with an air supply used for painting an automobile body and the like. Air-conditioning air flows from an air supply chamber 2 formed in a ceiling portion into the painting chamber 3 to form a coating machine T. The contaminated air containing the paint mist oversprayed from is sucked into the exhaust chamber 4 formed below the coating chamber 3 to purify it. The exhaust chamber 4 is provided with an exhaust processing device 32 for purifying the contaminated air by bringing the contaminated air into gas-liquid contact, and discharges the contaminated air purified by the exhaust processing device 32 to the outside on the downstream side. An exhaust duct 10 is formed, for example, on the left side wall 4L of the exhaust chamber 4.

【0003】 前記排気処理装置32は、左右両端にオ
ーバーフロー樋5R,5Lを有するフロープレート6が
排気室4を上下に仕切るように形成されると共に、当該
フロープレート6の中央部にベンチュリー部33となる
狭小流路が形成されている。そして、各オーバーフロー
樋5R,5Lから溢れてフロープレート6を流下した水
がベンチュリー部33を通過したときに水滴となって汚
染空気に含まれる塗料ミストと気液接触され、当該塗料
ミストを捕捉するように成されている。また、排気処理
装置32の下方には、塗料ミストを捕捉した水滴が排気
ダクト10内に直接吸い込まれないように、ベンチュリ
ー部33を通過した空気を排気ダクト10が開口されて
いない方の側壁4Rに向かって吹き出すように案内する
案内板34が配設されている。
The exhaust processing device 32 is formed such that a flow plate 6 having overflow gutters 5R and 5L at both left and right ends partitions an exhaust chamber 4 up and down, and a venturi portion 33 is provided at a central portion of the flow plate 6. A small narrow channel is formed. Then, when the water overflowing from the overflow gutters 5R and 5L and flowing down the flow plate 6 passes through the venturi section 33, the water becomes water droplets and comes into gas-liquid contact with the paint mist contained in the contaminated air, and captures the paint mist. It is made as follows. In addition, the air passing through the venturi section 33 is blown under the exhaust treatment device 32 so that the water droplets trapped in the paint mist are not directly sucked into the exhaust duct 10. A guide plate 34 for guiding the air to blow out is provided.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、ベンチ
ュリー部33を通過して塗料ミストを捕捉した水滴の一
部は、案内板34とフロープレート6の間を通る際に当
該フロープレート6の背面側に付着する。また、案内板
34の先端側から排気室4内に吹き出された水滴は、排
気室4の底面4Gに落ちるまでに舞い上がって、その水
滴に含まれる塗料成分と共に側壁や底面に大量に付着す
る。そして、これを放置すると内壁に付着した塗料成分
が固化してしまうため、排気室4の内壁は、その汚れが
あまり酷くならないうちに頻繁に清掃しなければならな
い。しかも、塗装ブース31はその全長が数十〜百数十
mもあるので、非常に広範囲にわたって清掃作業を行わ
なければならず、その作業が非常に面倒で、コストが嵩
むという問題があった。
However, some of the water droplets that have passed through the venturi section 33 and captured the paint mist, when passing between the guide plate 34 and the flow plate 6, are placed on the rear side of the flow plate 6. Adhere to. Further, water droplets blown into the exhaust chamber 4 from the front end side of the guide plate 34 soar until falling on the bottom surface 4G of the exhaust chamber 4 and adhere to the side walls and the bottom surface in large quantities together with the paint components contained in the water droplets. If this is left untreated, the paint component adhering to the inner wall solidifies, so that the inner wall of the exhaust chamber 4 must be cleaned frequently before the stain becomes too severe. In addition, since the painting booth 31 has a length of several tens to one hundred and several tens of meters, cleaning work must be performed over a very wide range, and the work is very troublesome and costly.

【0005】 一方、塗料ミストを捕捉した汚染空気と
オーバーフロー樋5R,5Lからオーバーフローされた
水が排気処理装置32を通過するときの騒音を低減する
と共に、塗料ミストの捕集効率を向上させるため、図4
に示すように、排気処理装置32として一方のベンチュ
リー部35内に他方のベンチュリー部36を形成した二
段ベンチュリー方式のものが提案されている(実開平4
−106668号公報参照)。しかしながら、この場合
も、二段目のベンチュリー部35を通過して微粒化され
た水滴が排気室4内で舞い上がり、水滴に含まれる塗料
成分が排気室4の内壁に付着するという問題を解決する
ことはできない。
On the other hand, in order to reduce noise when contaminated air capturing the paint mist and water overflowed from the overflow gutters 5R and 5L pass through the exhaust treatment device 32, and to improve the paint mist collection efficiency, FIG.
As shown in FIG. 2, a two-stage venturi system in which one venturi portion 35 is formed in one venturi portion 35 as an exhaust treatment device 32 has been proposed.
-106668). However, also in this case, the problem that water droplets atomized by passing through the second-stage venturi section 35 soar in the exhaust chamber 4 and paint components contained in the water drops adhere to the inner wall of the exhaust chamber 4 is solved. It is not possible.

【0006】 そこで本発明は、排気処理装置で発生す
る騒音を極力抑えると同時に、排気処理装置を通過して
排気室内に吹き出される水滴の舞い上がりを防止し、そ
の結果、フロープレートの裏面や、排気室の内壁や底面
に付着する塗料を低減することにより、清掃作業の頻度
及び手間を軽減することを技術的課題としている。
Accordingly, the present invention minimizes the noise generated in the exhaust gas treatment device, and at the same time, prevents soaring of water droplets blown into the exhaust chamber through the exhaust gas treatment device. It is a technical object to reduce the frequency and labor of cleaning work by reducing paint adhered to the inner wall and bottom surface of the exhaust chamber.

【0007】[0007]

【課題を解決するための手段】この課題を解決するため
に、本発明は、コンベアで搬送される被塗物を塗装する
塗装室から塗料ミストを含んだ汚染空気をその下方に形
成された排気室に吸い込み、当該排気室に配設された排
気処理装置で塗料ミストを分離除去した後、浄化された
空気を排気室の左右一方の側壁に開口形成された排気ダ
クトを介して外部に排出するようになされた給気付塗装
ブースにおいて、前記排気室には、左右両端にオーバー
フロー樋を形成したフロープレートが当該排気室を上下
に仕切るように配設されると共に、当該フロープレート
には被塗物の搬送方向に沿って所定間隔で開口部が形成
され、排気室の底面には、前記排気ダクトが開口された
側壁と反対側の側壁寄りに排水路が形成され、前記排気
処理装置は、前記フロープレートに形成された前記開口
部から排気室の底面近傍に至る流路を形成する縦型の筒
状体で形成され、当該筒状体内の流路には、その上流側
及び下流側に第一及び第二ベンチュリー部となる狭小流
路が形成され、前記筒状体の下端部には、前記流路を通
過した空気を排気室の底面近傍から前記排水路に向かっ
て略水平に吹き出させる吹出口が形成され、当該吹出口
の上端縁には吹き出された空気の舞い上がりを防止する
抑え板が配設されたことを特徴とする。
SUMMARY OF THE INVENTION In order to solve this problem, the present invention is directed to an exhaust system in which contaminated air containing paint mist is formed below a coating chamber for painting an object to be conveyed by a conveyor. After the paint mist is separated and removed by an exhaust treatment device provided in the exhaust chamber, the purified air is discharged to the outside via an exhaust duct formed in one of the left and right side walls of the exhaust chamber. In the painting booth provided with the above-mentioned configuration, a flow plate having overflow gutters formed at both left and right ends is disposed in the exhaust chamber so as to partition the exhaust chamber up and down. Openings are formed at predetermined intervals along the transport direction of the exhaust chamber, and a drainage channel is formed on the bottom surface of the exhaust chamber near a side wall opposite to the side wall on which the exhaust duct is opened. It is formed of a vertical cylindrical body that forms a flow path from the opening formed in the low plate to the vicinity of the bottom surface of the exhaust chamber, and the flow path in the cylindrical body has upstream and downstream flow paths. A narrow flow path serving as the first and second venturi portions is formed, and at the lower end of the cylindrical body, air that has passed through the flow path is blown substantially horizontally from near the bottom surface of the exhaust chamber toward the drainage path. An outlet is formed, and a suppressing plate for preventing the blown-up air from rising is disposed at an upper edge of the outlet.

【0008】 本発明によれば、塗装室でオーバースプ
レーされた塗料ミストを含む汚染空気は、フロープレー
トを流下する水と共に、フロープレートの開口部から排
気処理装置に導入される。排気処理装置には、その流路
の上流側及び下流側に第一及び第二ベンチュリー部とな
る二つの狭小流路が形成されているので、個々のベンチ
ュリー部で生ずる圧損が小さくなり、したがって、発生
する騒音が低減される。また、各ベンチュリー部を通過
することによって水が微粒化され、汚染空気に含まれる
塗料ミストと気液接触されて当該塗料ミストを捕捉する
ので、第一ベンチュリー部で捕捉されなかった塗料ミス
トは第二ベンチュリー部で捕捉されることとなり、塗料
ミストの捕集効率が向上する。そして、筒状体の下端部
に形成された吹出口から、各ベンチュリー部で塗料ミス
トを捕捉した水滴が、排気ダクトを開口形成した側壁の
反対側の側壁寄りに形成された排水路に向かって排気室
底面と略平行に吹き出される。しかも、吹出口の上端縁
には抑え板が配設されており、吹き出された水滴は舞い
上がることなく、そのほとんどが排水路内に落ちて塗装
ブース外へ持ち出され、排水路まで届かなかった僅量な
塗料だけが当該吹出口と排水路の間の排気室底面に落ち
るので、排気室の側壁や底面への塗料の付着量が低減さ
れる。
According to the present invention, the contaminated air containing the paint mist oversprayed in the coating room is introduced into the exhaust treatment device through the opening of the flow plate together with the water flowing down the flow plate. In the exhaust gas treatment device, two narrow channels that serve as the first and second venturis are formed on the upstream side and the downstream side of the channel, so that the pressure loss generated in each of the venturis is reduced, and therefore, The generated noise is reduced. Further, the water is atomized by passing through each of the venturi sections, and the paint mist contained in the contaminated air is brought into gas-liquid contact to capture the paint mist. Since it is trapped in the two venturi section, the collection efficiency of the paint mist is improved. Then, from the outlet formed at the lower end of the tubular body, water droplets trapped in the paint mist at each venturi portion are directed toward a drainage channel formed near the side wall opposite to the side wall where the exhaust duct is formed. It is blown out substantially in parallel with the bottom of the exhaust chamber. In addition, a holding plate is provided at the upper edge of the outlet, and most of the blown water drops do not soar, but most of them fall into the drainage channel and are taken out of the painting booth. Since only a large amount of paint falls on the bottom surface of the exhaust chamber between the outlet and the drainage channel, the amount of paint adhered to the side wall and bottom surface of the exhaust chamber is reduced.

【0009】[0009]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて具体的に説明する。図1は本発明に係る給気
付塗装ブースを示す正面図、図2はその要部を示す斜視
図である。
Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a front view showing a painting booth with air supply according to the present invention, and FIG. 2 is a perspective view showing a main part thereof.

【0010】 本例に係る給気付塗装ブース1は、天井
部に形成された給気室2から、コンベアCで自動車ボデ
ィなどの被塗物Wを搬送しながら塗装を行う塗装室3内
に空調空気を流下させ、塗装室3の下方には塗装機Tか
らオーバースプレーされた塗料ミストを含んだ汚染空気
を吸い込んで浄化処理する排気室4が形成されている。
そして、排気室4には、左右両端にオーバーフロー樋5
R,5Lを形成したフロープレート6が当該排気室4を
上下に仕切るように配設されると共に、当該フロープレ
ート6の中央部には、被塗物Wの搬送方向に沿って所定
間隔で開口部7が形成され、汚染空気に含まれる塗料ミ
ストを気液接触させる排気処理装置8が前記開口部7に
連通して配設されている。また、排気室4を上下に仕切
るフロープレート6の下側には前記排気処理装置8で捕
捉された塗料ミストを分離する気液分離ゾーン9が形成
され、排気室4の左右一方の側壁4Lには、前記排気処
理装置8を通過して浄化された空気を外部に排出する排
気ダクト10が開口形成されている。そして、排気室4
の底面4Gには、前記排気ダクト10が開口された側壁
4Lと反対側の側壁4R寄りに排水路11が形成されて
おり、当該排水路11を介して塗装ブース1外に設置し
た廃液回収槽21に回収した廃液を浄化して、前記フロ
ープレート6のオーバーフロー樋5R,5Lに循環供給
するようになされている。
The painting booth 1 with air supply according to the present embodiment has an air-conditioning inside a painting room 3 for performing painting while conveying an object W such as an automobile body by a conveyor C from an air supply room 2 formed in a ceiling portion. An exhaust chamber 4 is formed below the coating chamber 3 for allowing air to flow down and sucking and purifying contaminated air containing paint mist oversprayed from the coating machine T.
The exhaust chamber 4 has overflow gutters 5 at the left and right ends.
R, 5L are formed so as to partition the exhaust chamber 4 up and down, and a central portion of the flow plate 6 is opened at predetermined intervals along the conveying direction of the workpiece W. A portion 7 is formed, and an exhaust treatment device 8 for bringing the paint mist contained in the contaminated air into gas-liquid contact is provided in communication with the opening 7. A gas-liquid separation zone 9 for separating the paint mist captured by the exhaust treatment device 8 is formed below the flow plate 6 that partitions the exhaust chamber 4 up and down. An exhaust duct 10 for discharging the purified air passing through the exhaust treatment device 8 to the outside is formed. And the exhaust chamber 4
A drain passage 11 is formed on the bottom surface 4G of the side of the side wall 4R opposite to the side wall 4L where the exhaust duct 10 is opened, and a waste liquid collecting tank installed outside the painting booth 1 via the drain passage 11 The waste liquid collected in 21 is purified and circulated and supplied to the overflow gutters 5R and 5L of the flow plate 6.

【0011】 排気処理装置8は、フロープレート6に
形成された前記開口部7から排気室4内の底面4G近傍
に至る流路12を形成する縦型の筒状体13で形成さ
れ、当該筒状体13内の流路12には、その上流側及び
下流側に第一及び第二ベンチュリー部V1 ,V2 となる
狭小流路が形成されている。前記筒状体13に形成され
た流路12は、その上端側が前記フロープレート6に形
成された開口部7より広く形成されて、当該開口部7と
同形の開口断面を有する筒状通路7aが前記第一ベンチ
ュリー部V1 の狭小流路となっている。そして、前記筒
状体13の下端部には、前記各ベンチュリー部V1 ,V
2 で気液接触された汚染空気を排気室4内の底面4G近
傍から前記排水路11に向かって水平に吹き出させる吹
出口14が形成されている。また、前記筒状体13は、
図2に示すように正面から見たときに、筒状体13の左
側面板15Lの下端側が右側に開口する吹出口14に向
かって水平方向に曲げられ、左側面板15Lのエルボ部
16に形成された堰17と、右側面板15Rの下端部か
ら前記堰17に対向するように左下向きに延設される傾
斜板18とで第二ベンチュリー部V2 となる狭小流路を
形成している。さらに、吹出口14の上端縁には、水平
の抑え板19が形成され、フロープレート6上を流下
し、前記筒状体13内を通って気液分離ゾーン9に吹き
出される水滴の舞い上がりを防止するように成されてい
る。
The exhaust processing device 8 is formed by a vertical cylindrical body 13 that forms a flow path 12 extending from the opening 7 formed in the flow plate 6 to the vicinity of the bottom surface 4 G in the exhaust chamber 4. In the flow path 12 in the body 13, narrow flow paths which become the first and second venturi portions V 1 and V 2 are formed on the upstream side and the downstream side. The flow path 12 formed in the cylindrical body 13 has an upper end formed to be wider than the opening 7 formed in the flow plate 6, and has a cylindrical passage 7 a having the same opening cross section as the opening 7. It has a narrow channel of the first venturi section V 1. The venturi sections V 1 , V
An outlet 14 is formed for horizontally discharging the contaminated air that has been brought into gas-liquid contact in 2 from the vicinity of the bottom surface 4G in the exhaust chamber 4 toward the drainage channel 11. Further, the cylindrical body 13 is
As shown in FIG. 2, when viewed from the front, the lower end of the left side plate 15L of the tubular body 13 is bent in the horizontal direction toward the outlet 14 opening to the right, and is formed in the elbow portion 16 of the left side plate 15L. and a weir 17, to form a narrow channel of the second venturi section V 2 in an inclined plate 18 which extends in the lower left direction so as to face the weir 17 from the lower end of the right side plate 15R. Further, a horizontal holding plate 19 is formed at the upper end edge of the outlet port 14, and flows down on the flow plate 6, so that water droplets blown into the gas-liquid separation zone 9 through the inside of the cylindrical body 13 can be raised. It is made to prevent.

【0012】 なお、筒状体13の右側面板15Rは、
上端側の第一ベンチュリー部V1 から下端側の第二ベン
チュリー部V2 に至るまで略垂直に形成されている。ま
た、左側面板15Lは、前記流路12を上端側の第一ベ
ンチュリー部V1の出口側で拡大する懐部20を形成す
ると共に、前記第二ベンチュリー部V2 で発生した音を
その音圧の最も強い方向に沿って当該懐部20に形成さ
れた反射部20aまで案内するように傾斜して形成され
ている。これにより、第二ベンチュリー部V2 で発生し
た音は、その音圧の最も強い方向に沿って反射部20a
に進み、反射部20aに向かう音と反射部20aから反
射された音がぶつかり合って、その音圧レベルを下げる
ように成されている。
The right side plate 15R of the cylindrical body 13 is
It is formed substantially vertically from the first venturi section V 1 of the upper side to the second venturi section V 2 of the lower side. Also, the left side plate 15L is configured to form a pocket portion 20 for enlarging the flow passage 12 in the first venturi section V 1 of the outlet side of the upper side, the sound pressure of the sound generated by the second venturi section V 2 Is formed so as to be guided along the strongest direction to the reflection portion 20a formed on the pocket portion 20. Thus, the sound generated by the second venturi section V 2, the reflection portion 20a along the strongest direction of the sound pressure
The sound traveling toward the reflector 20a and the sound reflected from the reflector 20a collide with each other to lower the sound pressure level.

【0013】 以上が本発明の一例構成であって、次に
その作用を説明する。まず、給気室2から塗装室3に空
調空気を流下させると共に、オーバーフロー樋5R,5
Lからフロープレート6上に水を流下させて、排気室4
内の空気を排気ダクト10を介して外部に排出させる。
この状態で、塗装機Tから塗料を噴霧させると、オーバ
ースプレーされた塗料が、塗装室3内の空気と共に、排
気室4に配設されたフロープレート6の開口部7から排
気処理装置8を通って、気液分離ゾーン9に吹き出され
る。
The above is an example of the configuration of the present invention, and its operation will be described below. First, the conditioned air is caused to flow down from the air supply chamber 2 to the coating chamber 3, and at the same time, the overflow gutters 5R, 5R are used.
The water is allowed to flow down onto the flow plate 6 from the
The air inside is discharged to the outside via the exhaust duct 10.
In this state, when the paint is sprayed from the coating machine T, the oversprayed paint is discharged from the opening 7 of the flow plate 6 disposed in the exhaust chamber 4 together with the air in the coating chamber 3 through the exhaust treatment device 8. Then, it is blown out to the gas-liquid separation zone 9.

【0014】 排気処理装置8では、その上端に形成さ
れた第一ベンチュリー部V1 でフロープレート6から流
下する水が微粒化され、その水滴と塗装室3から吸い込
まれる汚染空気とが気液接触され、汚染空気に含まれる
塗料ミストが捕捉される。次いで、第一ベンチュリー部
1 を通過して流路12に沿って流下する水は、右側面
板15Rに沿って傾斜板18から堰17に流れ込むと共
に、左側面板15Lに沿ってエルボ部16に形成された
堰17にぶつかって一時的に滞留し、その水が堰17と
傾斜板18との隙間に形成される第二ベンチュリー部V
2 を通過する際に再び微粒化される。したがって、流路
12内を流れる水を高効率で霧化することができるの
で、第一ベンチュリー部V1 で捕捉されなかった塗料ミ
ストも確実に気液接触されて捕捉されることとなる。こ
のように、第一ベンチュリー部V1 及び第二ベンチュリ
ー部V2 の双方で水が微粒化されるので、塗料ミストが
水滴に接触される効率が高くなり、捕集効率も上昇す
る。また、排気処理装置8には、二つのベンチュリー部
1 ,V2 が形成されているので、個々のベンチュリー
部V1 ,V2 における差圧が小さくなり、したがって、
その分騒音レベルが低くなる。さらに、第二ベンチュリ
ー部V2 で発した音は、最も音圧の高い方向に沿って反
射部20に進み、反射部20に向かう音と反射部20で
反射された音がぶつかり合って打ち消し合い、その騒音
レベルがさらに低減される。
In the exhaust treatment device 8, the water flowing down from the flow plate 6 is atomized by the first venturi V 1 formed at the upper end thereof, and the water droplets and the contaminated air sucked in from the coating chamber 3 come into gas-liquid contact. The paint mist contained in the contaminated air is captured. Then, water flowing down along the flow path 12 through the first venturi section V 1 was, formed from the inclined plate 18 along the right side plate 15R together flow into the weir 17, the elbow 16 along the left side plate 15L The second venturi portion V is formed in a gap between the weir 17 and the inclined plate 18, where the water temporarily stays after hitting the weir 17.
When passing through 2 , it is atomized again. Therefore, it is possible to atomizing the water flowing through the flow passage 12 at a high efficiency, so that the paint mist which has not been captured by the first venturi section V 1 also captured are secure gas-liquid contact. Thus, since the water in both the first venturi section V 1 and the second venturi section V 2 is atomized, the higher the efficiency of the paint mist is contacted to the water droplets, also increases trapping efficiency. Further, since two venturi portions V 1 , V 2 are formed in the exhaust treatment device 8, the differential pressure at each of the venturi portions V 1 , V 2 is reduced, and therefore,
The noise level decreases accordingly. Moreover, the sound emitted by the second venturi section V 2 is canceled and collide the most sound along the high pressure direction proceeds to the reflective portion 20, the sound that has been reflected by the reflecting section 20 and the sound toward the reflective portion 20 , Its noise level is further reduced.

【0015】 このようにして第二ベンチュリー部V2
を通過した空気及び水は、前記筒状体13の下端部に形
成された吹出口14から、排水路11に向かって排気室
4の底面4Gと略平行に吹き出される。また、このとき
吹出口14の上端縁には水平な抑え板19が配設されて
いるので、吹出口14から吹き出された空気は、すぐに
舞い上がることなく抑え板19に案内されて略水平に吹
き出される。これにより、塗料ミストを捕捉した水滴
は、排水路11に向かって排気室4内の底面4Gと略平
行に吹き出され、排水路11に届かなかった僅量な塗料
だけが吹出口14と排水路11の間の底面4Gに落ちる
こととなるが、そのほとんどが排水路11内に落ちて塗
装ブース1外へ持ち出される。したがって、フロープレ
ート6の背面,排気室4の側壁4R,4Lや底面4Gへ
の塗料の付着量が低減され、清掃作業の頻度が減るだけ
でなく、その手間が著しく軽減される。
Thus, the second venturi section V 2
The air and water that have passed through are discharged from the outlet 14 formed at the lower end of the cylindrical body 13 toward the drainage channel 11 substantially in parallel with the bottom surface 4G of the exhaust chamber 4. Also, at this time, a horizontal holding plate 19 is provided at the upper end edge of the outlet 14, so that the air blown out from the outlet 14 is guided by the holding plate 19 without being immediately soared, and becomes substantially horizontal. Be blown out. As a result, the water droplets that have captured the paint mist are blown toward the drainage channel 11 substantially in parallel with the bottom surface 4G in the exhaust chamber 4, and only a small amount of paint that has not reached the drainage channel 11 is discharged to the outlet 14 and the drainage channel. 11 fall into the drainage channel 11 and are mostly taken out of the painting booth 1. Accordingly, the amount of paint adhered to the back surface of the flow plate 6, the side walls 4R and 4L of the exhaust chamber 4, and the bottom surface 4G is reduced, so that not only the frequency of the cleaning operation is reduced, but also the labor required for the cleaning operation is significantly reduced.

【0016】[0016]

【発明の効果】以上述べたように、本発明によれば、フ
ロープレートの開口部に取り付けられた縦型の筒状体に
形成される流路に沿って、その上流側及び下流側に第一
及び第二のベンチュリー部が形成されており、塗装室か
ら吸い込まれた汚染空気は、各ベンチュリー部で気液接
触されるので、第一ベンチュリー部で捕捉されなかった
塗料ミストも第二ベンチュリー部で捕捉されることとな
り、浄化効率が向上するという効果がある。また、二つ
のベンチュリー部を形成したことにより、各ベンチュリ
ー部の入口側と出口側の差圧は小さく、したがって、発
生する騒音が低減されるという効果がある。さらに、筒
状体の下端部には、前記筒状体の流路を通過した空気を
排気室の底面近傍から排水路に向かって略水平に吹き出
させる吹出口が形成され、しかも、吹出口の上端縁には
抑え板が配設されており、当該吹出口から吹き出された
水滴は、舞い上がることなく、排気室の側壁やフロープ
レートの背面に達する前に、そのほとんどが排水路内に
落とされてそのまま塗装ブース外へ持ち出されるので、
排気室内に付着する塗料を低減することができ、排気室
の清掃作業の頻度及び手間を著しく軽減することができ
るという大変優れた効果を奏する。
As described above, according to the present invention, along the flow path formed in the vertical cylindrical body attached to the opening of the flow plate, the upstream side and the downstream side of the flow path are formed. The first and second venturi portions are formed, and the contaminated air sucked from the coating chamber is brought into gas-liquid contact at each venturi portion, so that the paint mist not caught by the first venturi portion also has the second venturi portion. And the purification efficiency is improved. Further, by forming the two venturi portions, the pressure difference between the inlet side and the outlet side of each venturi portion is small, and therefore, there is an effect that the generated noise is reduced. Further, at the lower end of the tubular body, an outlet is formed for blowing out the air passing through the flow passage of the tubular body substantially horizontally from the vicinity of the bottom surface of the exhaust chamber toward the drainage passage. A retaining plate is provided on the upper edge, and most of the water droplets blown out of the outlet are dropped into the drainage channel before reaching the side wall of the exhaust chamber or the back of the flow plate without rising. And it is taken out of the painting booth as it is
It is possible to reduce the amount of paint that adheres to the exhaust chamber, and it is possible to significantly reduce the frequency and labor of cleaning the exhaust chamber.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る給気付塗装ブースを示す正面図。FIG. 1 is a front view showing a painting booth with air supply according to the present invention.

【図2】その要部を示す斜視図。FIG. 2 is a perspective view showing a main part thereof.

【図3】従来装置を示す正面図。FIG. 3 is a front view showing a conventional device.

【図4】他の従来装置を示す正面図。FIG. 4 is a front view showing another conventional apparatus.

【符号の説明】[Explanation of symbols]

1・・・・・・給気付塗装ブース 2・・・・・・給気室 3・・・・・・塗装室 T・・・・・・塗装機 4・・・・・・排気室 4R,4L・・排気室の側壁 5R,5L・・オーバーフロー樋 6・・・・・・フロープレート 7・・・・・・開口部 8・・・・・・排気処理装置 10・・・・・・排気ダクト 11・・・・・・排水路 12・・・・・・流路 13・・・・・・筒状体 V1 ・・・・・第一ベンチュリー部 V2 ・・・・・第二ベンチュリー部 14・・・・・・吹出口 19・・・・・・抑え板1 ... Painting booth with air supply 2 ... Air supply room 3 ... Painting room T ... Painting machine 4 ... Exhaust room 4R, 4L ··· Side wall of exhaust chamber 5R, 5L · · · Overflow gutter 6 ··· Flow plate 7 ··· Opening 8 ··· Exhaust treatment device 10 ··· Exhaust duct 11 ...... drainage 12 ...... passage 13 ...... tubular body V 1 · · · · · first venturi section V 2 · · · · · second venturi Part 14 ・ ・ ・ ・ ・ ・ Air outlet 19 ・ ・ ・ ・ ・ ・ Suppression plate

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 コンベアで搬送される被塗物(W)を塗
装する塗装室(3)から塗料ミストを含んだ汚染空気を
その下方に形成された排気室(4)に吸い込み、当該排
気室(4)に配設された排気処理装置(8)で塗料ミス
トを分離除去した後、浄化された空気を排気室(4)の
左右一方の側壁(4L)に開口形成された排気ダクト(1
0)を介して外部に排出するようになされた給気付塗装
ブースにおいて、 前記排気室(4)には、左右両端にオーバーフロー樋
(5R,5L)を形成したフロープレート(6)が当該排気
室(4)を上下に仕切るように配設されると共に、当該
フロープレート(6)には被塗物(W)の搬送方向に沿
って所定間隔で開口部(7)が形成され、排気室(4)
の底面(4G)には、前記排気ダクト(10)が開口された側
壁(4L)と反対側の側壁(4R)寄りに排水路(11)が形成さ
れ、 前記排気処理装置(8)は、前記フロープレート(6)
に形成された前記開口部(7)から排気室(4)の底面
(4G)近傍に至る流路(12)を形成する縦型の筒状体
(13)で形成され、当該筒状体(13)内の流路(12)に
は、その上流側及び下流側に第一及び第二ベンチュリー
部(V1,V2)となる狭小流路が形成され、前記筒状体
(13)の下端部には、前記流路(12)を通過した空気を
排気室(4)の底面(4G)近傍から前記排水路(11)に
向かって略水平に吹き出させる吹出口(14)が形成さ
れ、当該吹出口(14)の上端縁には吹き出された空気の
舞い上がりを防止する抑え板(19)が配設されたことを
特徴とする給気付塗装ブース。
1. A contaminated air containing a paint mist is sucked from a coating chamber (3) for coating an object (W) conveyed by a conveyor into an exhaust chamber (4) formed therebelow. After the paint mist is separated and removed by the exhaust treatment device (8) arranged in (4), the purified air is discharged into the exhaust duct (1) formed in one of the left and right side walls (4L) of the exhaust chamber (4).
0), a flow plate (6) having overflow gutters (5R, 5L) formed at both left and right ends is provided in the exhaust chamber (4). (4) is arranged so as to partition up and down, and openings (7) are formed in the flow plate (6) at predetermined intervals along the transport direction of the work (W), and the exhaust chamber ( 4)
A drainage channel (11) is formed on the bottom surface (4G) of the airbag near the side wall (4R) opposite to the side wall (4L) where the exhaust duct (10) is opened, and the exhaust treatment device (8) The flow plate (6)
A vertical cylindrical body (13) forming a flow path (12) extending from the opening (7) formed in the vicinity to the vicinity of the bottom surface (4G) of the exhaust chamber (4). the 13) within the channel (12), narrow channel comprising a first and a second venturi section (V 1, V 2) is formed on the upstream and downstream, the tubular body (13) At the lower end, there is formed an outlet (14) for blowing out the air passing through the flow path (12) substantially horizontally from the vicinity of the bottom surface (4G) of the exhaust chamber (4) toward the drainage channel (11). A paint booth with air supply, characterized in that a suppressor plate (19) for preventing the blown-up air from rising is arranged at the upper edge of the outlet (14).
【請求項2】 コンベアで搬送される被塗物(W)を塗
装する塗装室(3)から塗料ミストを含んだ汚染空気を
その下方に形成された排気室(4)に吸い込み、当該排
気室(4)内で前記塗料ミストを分離除去して空気を浄
化する給気付塗装ブースの排気処理装置であって、 排気室(4)を上下に仕切るフロープレート(6)に被
塗物(W)の搬送方向に沿って所定間隔で形成された開
口部(7)に、当該開口部(7)から排気室(4)の底
面(4G)近傍に至る流路(12)を形成する縦型の筒状体
(13)が配設され、当該筒状体(13)内の流路には、そ
の上流側及び下流側に第一及び第二ベンチュリー部
(V1,V2)となる狭小流路が形成され、前記筒状体 (1
3) の下端部には、前記流路(12)を通過した空気を排
気室(4)の底面(4G)近傍から前記排水路(11)に向
かって略水平に吹き出させる吹出口(14)が形成され、
当該吹出口(14)の上端縁には吹き出された空気の舞い
上がりを防止する抑え板(19)が配設されたことを特徴
とする給気付塗装ブースの排気処理装置。
2. A contaminated air containing a paint mist is sucked from a coating chamber (3) for coating an object (W) conveyed by a conveyor into an exhaust chamber (4) formed thereunder. (4) An exhaust treatment device for a paint booth with an air supply for purifying air by separating and removing the paint mist in (4), wherein an object to be coated (W) is placed on a flow plate (6) that vertically separates an exhaust chamber (4). A vertical type forming a flow path (12) extending from the opening (7) to the vicinity of the bottom surface (4G) of the exhaust chamber (4) in the openings (7) formed at predetermined intervals along the conveyance direction of A tubular body (13) is provided, and a narrow flow which becomes first and second venturi portions (V 1 , V 2 ) on the upstream and downstream sides of the flow passage in the tubular body (13) is provided. A path is formed, and the cylindrical body (1
At the lower end of 3), an air outlet (14) for blowing air passing through the flow path (12) from the vicinity of the bottom surface (4G) of the exhaust chamber (4) substantially horizontally toward the drainage path (11). Is formed,
An exhaust treatment device for a painting booth with an air supply, characterized in that a suppression plate (19) for preventing the blown-up air from rising is disposed at an upper edge of the outlet (14).
JP8036597A 1997-03-31 1997-03-31 Supply booth with air supply and exhaust treatment equipment used for it Expired - Lifetime JP3595101B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8036597A JP3595101B2 (en) 1997-03-31 1997-03-31 Supply booth with air supply and exhaust treatment equipment used for it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8036597A JP3595101B2 (en) 1997-03-31 1997-03-31 Supply booth with air supply and exhaust treatment equipment used for it

Publications (2)

Publication Number Publication Date
JPH10272395A true JPH10272395A (en) 1998-10-13
JP3595101B2 JP3595101B2 (en) 2004-12-02

Family

ID=13716244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8036597A Expired - Lifetime JP3595101B2 (en) 1997-03-31 1997-03-31 Supply booth with air supply and exhaust treatment equipment used for it

Country Status (1)

Country Link
JP (1) JP3595101B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084346A (en) * 2014-06-30 2014-10-08 长兴华锐机械设备有限公司 Venturi type paint mist processing device
WO2017152598A1 (en) * 2016-03-09 2017-09-14 四维尔丸井(广州)汽车零部件有限公司 Paint spray booth system having high paint capture rate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084346A (en) * 2014-06-30 2014-10-08 长兴华锐机械设备有限公司 Venturi type paint mist processing device
WO2017152598A1 (en) * 2016-03-09 2017-09-14 四维尔丸井(广州)汽车零部件有限公司 Paint spray booth system having high paint capture rate

Also Published As

Publication number Publication date
JP3595101B2 (en) 2004-12-02

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