JPS5827617A - Apparatus for recovering paint solvent - Google Patents

Abstract

PURPOSE:To prevent the discharge of a paint solvent into the atmosphere as well as to attain available utilization of the solvent, by a method wherein the paint solvent such as a thinner is collected by adsorption to be evaporated by heating and the resulting solvent vapor is condensed by cooling to be recovered in a re-usable form. CONSTITUTION:Air in a painting chamber is sucked along with a solvent by an exhaust fan and simultaneously fallen toward filled water and contacted therewith to be adhered to and collected by a water surface. Sucked air is passed through a filter 26 to remove dust therein and thereafter introduced into a collecting chamber 8 to be passed and raised through each small chambers 10 in an adsorbing means 13. When the solvent is adsorbed by packed activated carbon, a motor 23 is rotated by a timer to move the small chambers 10 to the position of an evaporating means 16 to heat the solvent at a flash point thereof by a heater 14 and the solvent vapor is sent into a regelation means 19 by a diaphragm pump 17 to be cooled by flowing the same through a water jacket 18 in a zigzag form. The resulting cooled solvent is condensed to the original liquid solvent to be separated by a separator and accumulated in a recovery tank 21.

Description

【発明の詳細な説明】 収する装置に関する。[Detailed description of the invention] related to the equipment used to store the information.

従来シンナー等の塗料溶剤は、図面第１図に示す様な捕
集装置、即ち下部ｅこ水を張った塗装室に張水の水位近
くで連通ずる排気筒を隣設し、この排気筒に排風機を内
設して、この排風機で塗装室に飛散した塗料と溶剤を塗
装室の上部から取入れる空電と共ｅこ吸引させ、一旦水
面をこ当てて塗料を水中Ｆこ分離させ、溶剤と空気を排
気筒をこ集めて屋外へ排出させるものであったから、塗
装室周辺に溶剤が漂い出ることがないため、作業環境の
保養には効果があったが、動植物ｔこ有害な溶剤が大気
中へ放出されて大貧を汚染し、公害の原因となる重大な
欠点があるし、又、この場合は回収して復液させれば、
再使用出来る溶剤が捨てられて無駄ｅこなる欠つ、もあ
った。Conventionally, paint solvents such as thinner are collected using a collection device as shown in Figure 1, i.e., an exhaust pipe is installed adjacent to the painting chamber filled with water in the lower part of the painting room near the water level, and the exhaust pipe is connected to the collecting device as shown in Figure 1 of the drawing. An exhaust fan is installed inside, and this exhaust fan sucks up the paint and solvent scattered in the painting room along with the static electricity taken in from the top of the painting room, and once the water surface is applied, the paint is separated by underwater F. Since the solvent and air were collected in the exhaust pipe and discharged outdoors, the solvent did not drift around the painting room, which was effective in preserving the working environment, but it also caused harm to animals and plants. There is a serious drawback that the solvent is released into the atmosphere and pollutes the atmosphere, causing pollution, and in this case, if it is recovered and reconstituted,
There were also cases where reusable solvents were thrown away and were wasted.

本発明は、この欠壱にかんがみなされたもので、シンナ
ー等の塗料溶剤を、吸着ｔこより集めて加熱ｅこより気
化させ、冷却により復液させて再使用出来る状ＩＩ）こ
おいて回収することにより、前記従来の欠点を解消する
装置を提供することを目的とする。The present invention was conceived in view of this problem, and involves collecting paint solvents such as thinner by adsorption, vaporizing them by heating, and condensing them by cooling so that they can be reused. It is an object of the present invention to provide a device that eliminates the above-mentioned conventional drawbacks.

次ｔこ本発明に関する塗料溶剤回収装置の実施態様を図
面をこ付き説明すればＦ記の通りである。Next, an embodiment of the paint solvent recovery device according to the present invention will be described below with reference to the drawings.

図面第１図は従来の溶剤捕集装置Ａを示すもので、正面
に作業口１を開口させた塗装室２の下部に水３を張り、
塗装室２の背部には前記張水３の水位近くで塗装室２と
連通させた排気筒４を設け、この排気筒４の上端を従来
は同図に鎖線で示す様に屋外に開口させたが、本願ｅこ
おいては実線で示す様ｔこ後記する回収装置へ接続する
様にしてあり、更にこの排気筒４内には排風機５を設け
、前記塗装室２の上部には空気取入口６を設け、この日
６から取入れられた空気をフィルタ７によりｐ過して塗
装室２へ送る様１こしである。図面第２図は本発明の塗
料溶剤回収装置Ｂを示すもので、前記溶剤補集装置Ａに
おける排気筒４を下端に連結した上下にテーパ部ｃ　＋
　ｄを有する円筒形の収集室８と、この収集室８内をこ
回転自在をこ設けて、放射状の仕切９により多数の小室
１０に区分し、各小室１０の上下を通気材１１により閉
塞し、内部に活性炭等の吸着材１２を収容し、この吸着
材１２の交換はｍＪ記通気材１１を取外して行う様にし
た短い筒形の溶剤吸着手段１３と１．この手段１３にお
ける一つの小室１０を下部の加熱器１４と上部の気化室
１５との間に受入れて溶剤を加熱により効率良く気化さ
せる気化手段】６と、前記気化手段１６の気化室１５か
らダイヤフラムポンプ１７により吸い出された気化溶剤
を水套１８内を蛇行状に通して冷し、復液させる手段１
９とを備える。２０は復液した溶剤と気化状態の溶剤と
を分離させる分離器で、復液手段１９の終端で溶剤を受
け、その復液したものを回収タンク２１に送り、復液し
ない溶剤は戻し管２２により吸着手段】３の手前へ戻さ
せる。２３は吸着手段１３を回転させて、各小室１０を
順次に気化手段１６の位置なこ送るモータで、図面第２
図ｔこおいては吸着手段１３の中心部に設けた中心駆動
式としであるが、吸着手段１３の外側シこ設けた局面駆
動式としても差支えなく。このモータ２３は吸着手段１
３における各小室１０の／ピッチ間の移動に３〜Ｓ秒を
要する速さで吸着手段１３を回転させ、一つの室】０が
気化手段１６に一致すると５分〜３０分間停止し、この
間に吸着材１２に吸着された溶剤が気化する様に公知の
タイマを用いて回転を制御するものとする。２４は前記
収集室８の上側のテーパ一部ｃ、ｄに連設した排気筒で
、内部に排風機２５を備え、溶剤を吸着材１２？こより
吸着除去された排気を屋外へ排出させる。２６は前記収
集室８の下部ｔこ設けたフィルタで、溶剤と空気との混
合体に塵埃が混入した場合、之を除去して塵ψ埃が吸着
材１２１こ達しない様にしたものである。Figure 1 shows a conventional solvent collection device A, in which water 3 is filled in the lower part of a painting chamber 2 with a working opening 1 opened at the front.
An exhaust pipe 4 is provided at the back of the painting room 2 and communicates with the painting room 2 near the water level of the water supply 3. Conventionally, the upper end of this exhaust pipe 4 was opened outdoors as shown by the chain line in the figure. However, in this application, as shown by the solid line, it is connected to a recovery device to be described later.Furthermore, an exhaust fan 5 is installed in the exhaust pipe 4, and an air intake is installed in the upper part of the painting chamber 2. An inlet 6 is provided, and the air taken in from day 6 is passed through a filter 7 and sent to the painting room 2. FIG. 2 shows a paint solvent recovery device B of the present invention, in which a tapered portion c
A cylindrical collection chamber 8 having a radius of , a short cylindrical solvent adsorption means 13 which houses an adsorbent 12 such as activated carbon inside, and the adsorbent 12 can be replaced by removing the mJ ventilation material 11; A vaporizing means for efficiently vaporizing the solvent by heating by receiving one small chamber 10 in this means 13 between a lower heater 14 and an upper vaporizing chamber 15, and a diaphragm from the vaporizing chamber 15 of the vaporizing means 16 Means 1 for cooling and condensing the vaporized solvent sucked out by the pump 17 by passing it in a meandering manner through the water cannula 18
9. A separator 20 separates the condensed solvent and the vaporized solvent, which receives the solvent at the end of the condensing means 19, sends the condensed liquid to the recovery tank 21, and sends the solvent that is not condensed to the return pipe 22. The suction means] returns it to the front of 3. 23 is a motor that rotates the suction means 13 and sequentially moves each small chamber 10 to the position of the vaporization means 16;
In FIG. t, a central drive type is provided in the center of the suction means 13, but a surface drive type provided on the outside of the suction means 13 may also be used. This motor 23 is the suction means 1
The adsorption means 13 is rotated at a speed that requires 3 to S seconds to move between pitches of each small chamber 10 in 3, and when one chamber 0 matches the vaporization means 16, the adsorption means 13 is stopped for 5 to 30 minutes, and during this period The rotation is controlled using a known timer so that the solvent adsorbed by the adsorbent 12 is vaporized. Reference numeral 24 denotes an exhaust pipe connected to the upper tapered portions c and d of the collection chamber 8, and is equipped with an exhaust fan 25 inside to transfer the solvent to the adsorbent 12? The exhaust gas adsorbed and removed by this is discharged outdoors. Reference numeral 26 denotes a filter provided at the bottom of the collection chamber 8, which removes dust when it gets mixed into the mixture of solvent and air and prevents the dust from reaching the adsorbent 121. .

本発明ｔこ関する装置は、前記実施態様に示す通りの構
成であるから、塗装室２ｔこおいて図面第１図に示す様
に塗装を行うと、塗料と溶剤が塗装室２内をこす飛散す
るが、この塗装室２には排気筒４内ｔこ設けた排風機５
の吸引力が作用しており、空気と共に塗料と溶剤を吸引
する。従って塗料と溶剤と空気は、塗装室１を下部の張
水３へ向って下降し、張水３に接するとぎ霧状の塗料は
水面ｅこ耐着捕集され、気化した溶剤と空気だけが排気
筒４内ｅこ入り、排風機５に圧送されてフィルタ２６を
通り、塵埃を除かれて収集室８内に導かれ、吸着手段１
３における各小室１ｏを通過上昇する。このとき各小室
１０ｆこ充填されている活性炭等の吸着材１２は気化し
た溶剤を吸着し、空気はそのまま通す。こうして吸着材
１２が充分ｔこ溶剤を吸着すると、公知のタイマーがモ
ータ２３を回転させ、吸着材Ｉ２が充分に溶剤を吸着し
ている小室１０を気化手段１６の位置へ移動させて停止
する。すると気化手段１６１こおける加熱器１４が溶剤
を引火点以下で加熱し、吸着材】２から気化室１５へ気
化させ、気化した溶剤はダイヤフラムポンプ１７が復水
手段１９へ送り込み、水套１８の中を蛇行流動させて冷
却するため、気化溶剤は凝結し、元の液状溶剤に戻り、
分離器によ、′− り非復液溶剤と分離されて回収タンク２１へ溜る。Since the apparatus related to the present invention has the configuration as shown in the embodiment described above, when painting is performed in the painting chamber 2 as shown in FIG. However, in this painting room 2, there is an exhaust fan 5 installed inside the exhaust pipe 4.
The suction force is acting and sucks the paint and solvent together with the air. Therefore, the paint, solvent, and air descend through the painting chamber 1 toward the water tank 3 at the bottom, and when they come into contact with the water tank 3, the atomized paint is collected on the water surface, leaving only the vaporized solvent and air. It enters the exhaust pipe 4, is forced into the exhaust fan 5, passes through the filter 26, removes dust, and is guided into the collection chamber 8, where the suction means 1
It passes through each small chamber 1o in 3 and rises. At this time, the adsorbent 12 such as activated carbon filled in each small chamber 10f adsorbs the vaporized solvent and allows air to pass through as is. When the adsorbent 12 has adsorbed enough solvent in this way, a known timer rotates the motor 23 to move the small chamber 10 in which the adsorbent I2 has adsorbed enough solvent to the position of the vaporizing means 16, and then stops. Then, the heater 14 in the vaporizing means 161 heats the solvent below its flash point, vaporizing it from the adsorbent 2 into the vaporizing chamber 15, and the diaphragm pump 17 sends the vaporized solvent to the condensing means 19, where it is fed into the water mantle 18. Because the solvent is cooled by flowing in a meandering manner, the vaporized solvent condenses and returns to its original liquid state.
The separator separates the non-condensed solvent and collects it in the recovery tank 21.

一方非復水溶剤は収集室８の手前へ戻され、吸着材１２
に再吸着される。この様にして吸着材１２に吸着された
溶剤が気化し、復液されるとぎは、タイマーが再びモー
タ２３を回転させ、溶剤な放出して吸着性、を回復した
吸着材１２を気化手段１６外へ移動させ、溶剤を充分（
こ吸着した吸着材１２を気化手段１６に合致させて停止
し、加熱により溶剤を気化させた後、復液手段により冷
却して復液さ′せる操作を各小室１０に対し輪番的に施
すため、溶剤回収は連続的に行われるものである。On the other hand, the non-condensing solvent is returned to the front of the collection chamber 8 and the adsorbent 12
is adsorbed again. After the solvent adsorbed on the adsorbent 12 is vaporized and recondensed, the timer rotates the motor 23 again to release the solvent and return the adsorbent 12 to the vaporizing means 16. Remove the solvent to the outside and add enough solvent (
The adsorbent 12 is aligned with the vaporizing means 16 and stopped, the solvent is vaporized by heating, and then the liquid is cooled and condensed by the condensing means. , solvent recovery is continuous.

前述の様に本発明に係る・装置は、公知の捕集装置によ
り塗料を除かれて集められた塗剤を、収集室へ導入して
吸着手段における吸着材に吸、着させ、吸着後、気化手
段により加熱して気化させ、気化後復水手段により冷却
して復液させるものであるから、大気中に飛散した塗料
中の溶剤を元状で回収して再使用することが出来るため
、溶剤の無駄がなくなり、省資源に大きな効果を挙げる
だけでなく、前記の−通りの溶剤回収により大気中へ放
出される排気中には、殆ど溶剤が含まれないため、大気
汚染の公害を起すおそれがない、ものである。As described above, the apparatus according to the present invention introduces the paint collected after removing the paint by a known collection device into the collection chamber, adsorbs and adheres to the adsorbent in the adsorption means, and after adsorption, Since it is heated and vaporized by vaporization means, and then cooled and condensed by condensation means after vaporization, the solvent in the paint scattered in the atmosphere can be recovered and reused in its original state. Not only does this eliminate waste of solvents, which has a great effect on resource conservation, but the exhaust gas released into the atmosphere through solvent recovery as described above contains almost no solvent, which causes air pollution. There is no fear.

殊にこの装置は、収集室内に設けた吸着手段をロータリ
一式とし、吸着材が溶剤を吸着すると、之を順次気化手
段に送って吸着溶剤を気化させ、気化により吸着力を回
復した吸着材に又吸吉を行わせるサイクルを繰返させれ
ば、溶剤回収を連続的に効率良く行わせることも出来る
利便を有するものである。In particular, in this device, the adsorption means installed in the collection chamber is a rotary set, and when the adsorbent adsorbs the solvent, it is sequentially sent to the vaporization means to vaporize the adsorbed solvent. Moreover, by repeating the cycle of suctioning, it is convenient that solvent recovery can be carried out continuously and efficiently.

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

第７図は従来の溶剤捕集装置の縦断側面図。 第２図は本発明に関する溶剤回収装置の縦断側面図で、
気化手段は模型的に示しである。第３図は同上の溶剤収
集室の横断平面図である。 図中８は溶剤の収集室、１３は溶剤の吸着手段、１２は
吸着材、１６は吸着溶剤の気化手段、１９は気化溶剤の
復液手段である。 第 ３ 図 １ 手続補正書（白、幻 昭和！；７年２　月７Ｃ＋＋ 特許庁長官　島　　１）　春　　樹　　殿１、事件の表
示 昭和５乙年持許願第１．２７２３Ｚ号 ２、発明の名称 塗料溶剤回収装置 ３、補正をする者 事件との関係　　特　許　出　願　人 １７代表者石　原　　　優 ４、代　理　人 明細書中、「発明の詳細な説明」の欄及び図面第１図、
第Ω図 ６、補正の内容 ／　明紬書中第グ頁ｇイテ〜り行に「下部の加ｐＩ！８
器１４と・・・気化させる」とあるを［非発火性の上部
の加熱器１４と、下部の気化室１５との間へ溶剤を受入
れ、加ｐ（・こより効率良く気化させる」と訂正する。 ゛ ／　同上筒グ頁１０行〜／３行（・こ「気化室］５から
・・・手段Ｊ９とを廟える。」とあるを「貧化室１５を
減圧して、なるべく低温での気化を促すと共（こ、気化
した溶剤を水套１８内を蛇行させた覆水手段１９へ圧入
し、復水を促させるポンプ又はコンプレッサー１７とを
備える。尚、前記気化室１５には窒素等の不活性ガスを
封入すれば、一層安全性が高まるもので、この場合不活
性ガスは気化溶剤の復液ｔこ伴い分離して、気化室］５
へ戻す様に循還路をとるものとする。」 ／　同上第７頁ｇ行〜り行ｔこ［ダイヤプラムポンプ１
７」とあるを「ポンプ又はコンプレッサー１７」と訂正
する。 以　　　　上FIG. 7 is a longitudinal sectional side view of a conventional solvent collection device. FIG. 2 is a longitudinal sectional side view of the solvent recovery device according to the present invention.
The vaporization means are shown schematically. FIG. 3 is a cross-sectional plan view of the same solvent collection chamber. In the figure, 8 is a solvent collection chamber, 13 is a solvent adsorption means, 12 is an adsorbent, 16 is an adsorption solvent vaporization means, and 19 is a vaporized solvent condensation means. 3 Figure 1 Procedural amendment (White, phantom Showa!; February 7, 7C++ Director General of the Patent Office Shima 1) Haruki Tono1, Indication of the case, 1933 Otsu year Permanent Application No. 1.2723Z No. 2, Name of the invention Paint Solvent recovery device 3, relationship with the case of the person making the amendment Patent applicant 17 representative Yu Ishihara 4, agent's specification, column of "Detailed description of the invention" and drawing Figure 1,
Ω Figure 6, Contents of the correction / On page G of the Myo Tsumugi book, in the line ``Additional pI at the bottom!8''
The phrase "is vaporized with the container 14" has been corrected to read "The solvent is received between the non-ignitable upper heater 14 and the lower vaporization chamber 15, and is vaporized more efficiently by applying it."゛ / Same as above, page 10 to 3 (-) The phrase ``From the vaporization chamber 5...means J9 is removed.'' is replaced with ``The depressurization chamber 15 is depressurized and the temperature is as low as possible. The vaporization chamber 15 is equipped with a pump or compressor 17 that pressurizes the vaporized solvent into a water covering means 19 that snakes inside the water cannula 18 and promotes condensation. In this case, the inert gas is separated from the condensate of the vaporized solvent, and the vaporization chamber is filled with an inert gas.
A circulation route shall be taken to return to. ” / Same as above, page 7, lines g to ri [diaplum pump 1]
7" should be corrected to "pump or compressor 17."that's all

Claims (1)

【特許請求の範囲】[Claims] 塗料を分離した溶剤を受入れる収集室と、この収集室内
において前記溶剤を吸着材をこ吸着させる手段と、この
吸着手段を加熱して吸着溶剤を気化させる手段と、気化
した溶剤を冷やして復液させる手段とを備えたことを特
徴とする塗料溶剤回収装置。a collection chamber for receiving the solvent from which the paint has been separated; a means for adsorbing the solvent onto an adsorbent in the collection chamber; a means for heating the adsorption means to vaporize the adsorbed solvent; and a means for cooling the vaporized solvent and condensing it. A paint solvent recovery device characterized in that it is equipped with a means for recovering a paint solvent.