JPS6115749A - Cleaning method by dry ice - Google Patents

Abstract

PURPOSE:To facilitate not only the disposal of a cleaning agent after cleaning but also the recovery of adhered substances, by allowing the cleaning agent comprising a dry ice particle group to impinge to a surface to be cleaned to remove the substances adhered to the surface to be cleaned. CONSTITUTION:Pebble shaped dry ice 8 is guided to a low temp. crusher 1 along with liquid nitrogen while cooled by liquid nitrogen to be formed into particles which are, in turn, subsequently discharged onto a receiving box 7, while carried on the air stream formed by the driving of said low temp. crusher, through a cyclone 4, an air force screen 5 and a secondary cyclone 6 in the same way as a stock material. The dry ice particle group is impinged to the surface to be cleaned of a stock material passage, to which the adhered substance of the stock material in the low temp. crusher is adhered, when moved while carried on the aforementioned air stream and the adhered material is ground off and removed from the surface to be cleaned by said impactness and said dry ice particle group reaches the receiving box 7 as mentioned above along with the adhered substance.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は物品の被洗浄面に付着している汚れ物質等の付
着物金除去する洗浄法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cleaning method for removing deposits such as dirt deposited on the surface of an article to be cleaned.

従来の技術 従来の洗浄法は、水、酸、アルカリ、油等を洗浄剤とし
て被洗浄面に帳す込み攪拌、循環する手段、もしくは水
、氷、砂等全洗浄剤として被洗浄面に噴射する手段が用
いられている。Conventional technology Conventional cleaning methods involve applying water, acid, alkali, oil, etc. as a cleaning agent to the surface to be cleaned, stirring and circulating it, or spraying water, ice, sand, etc. as a cleaning agent onto the surface to be cleaned. The means to do so are being used.

発明が解決しようとする問題点 しかしながら、これら何づれの場合でも、■洗浄後の被
洗浄面に洗浄剤が残留するため、洗浄剤除去のための後
洗浄や乾燥等の工程が必要となり。Problems to be Solved by the Invention However, in any of these cases, (1) Since the cleaning agent remains on the surface to be cleaned after cleaning, steps such as post-cleaning and drying are required to remove the cleaning agent.

■洗浄後の洗浄剤が被洗浄面に付着していた付着物を含
むので環境汚染を招かないよう処分する必要がオ夛、■
洗浄後の洗浄剤から付着物を回収しようとすると、付着
物と洗浄剤との分離工程が必要とｋる等の困難な問題を
有してい７’Ｃ。■After cleaning, the cleaning agent contains deposits that were attached to the surface to be cleaned, so it is necessary to dispose of it so as not to cause environmental pollution.■
When attempting to collect deposits from the cleaning agent after cleaning, there are difficult problems such as a step of separating the deposits and the cleaning agent.7'C.

そこで本発明は、洗浄剤除去のための後洗浄。Therefore, the present invention provides post-cleaning to remove the cleaning agent.

乾燥工程ヲ委さず、洗浄後の洗浄剤を容易に処分でき、
しかも付着物の回収も容易に行うことができて、上記の
従来の問題点を統一して解決するドライアイスによる洗
浄法を提案するものである。You can easily dispose of the cleaning agent after cleaning without having to do the drying process.
In addition, the present invention proposes a cleaning method using dry ice that can easily collect deposits and solve all of the above-mentioned conventional problems.

問題点を解決するための手段 即ち、不発明に、ドライアイス粒子群を洗浄剤として被
洗浄面に衝突させて、被洗浄面に付着している付着物を
除去することを特徴とする特許アイスによる洗浄法を要
旨とするものである。Means for solving the problem, namely, a patented ice cream characterized by uninventively colliding a group of dry ice particles as a cleaning agent against the surface to be cleaned to remove deposits adhering to the surface to be cleaned. This article focuses on cleaning methods using

作　　用 被洗浄面［残留しに洗浄剤は洗浄後大気中に放置するこ
とによシ昇華し、従って被洗浄面は洗浄され、又、除去
された付着物に混在した洗浄後の洗浄剤も大気中に放置
することにより昇華し、従って上記付層物は回収の谷易
な状助になる。Action: The cleaning agent that remains on the surface to be cleaned sublimates by leaving it in the atmosphere after cleaning, so the surface to be cleaned is cleaned, and the cleaning agent mixed with the removed deposits after cleaning is also removed. When left in the atmosphere, it sublimates, and therefore the layered material becomes easy to recover.

実施例 次に、本発明の図示の一実施例について説明するると１
本例は低温粉砕装置の洗浄に適用した場合を示すもので
、低温粉砕装置は、低温粉砕機／の入口側に原料、液体
窒素投入０．２を備えると共にドライアイヌ投入口３を
備え、低温粉砕機ｌの出口側にはサイクロン１１．風力
篩ｊを順に介して二次サイクロン６を連結し、二次サイ
クロン乙の出口下方には受は箱７を配置している。そし
て、こ２から投入さ扛て低温粉砕機ｌにより所要の粒度
に粉砕さｎ、次いでサイクロンｑ、風力ｍＳ、二次サイ
クロン６を経て受は箱７上に粉体製品として排出される
。Embodiment Next, an illustrated embodiment of the present invention will be explained.
This example shows a case where it is applied to cleaning a cryo-pulverizer. A cyclone 11 is installed on the outlet side of the crusher l. A secondary cyclone 6 is connected via the wind sieve J in order, and a receiver box 7 is arranged below the outlet of the secondary cyclone B. Then, the powder is inputted from this 2, crushed to a desired particle size by a low-temperature crusher 1, and then passed through a cyclone q, a wind force mS, and a secondary cyclone 6, and then discharged onto a box 7 as a powder product.

次に、他の被粉砕用原料の粉砕等のため低温粉砕装置内
全洗浄する場合、礫状ドライアイスＳ全ドライアイス投
入口３に投入すると共に原料、液体窒素投入ローから冷
却用液体窒素を供給し、低温粉ｇＰ装ａｈ運転状態とす
る。これにより、礫状ドライアイヌδは液体窒素で冷却
されつつ該液体窒素と共に低温粉砕Ｔａｌに導かれて粒
子状となり、次いで低温粉砕装置の運転からする気流に
乗ってｌ記原料同様にサイクロン１５風力篩ｊ、二次サ
イクロン６全経て受は箱７上に排出される。そして、こ
のドライアイス粒子群は上記気流に乗って移動する際、
低温粉砕装置内の自口記ｍ料の付着物全付層し７′ｃ、
原料通路のｆＪＪｔ清浄面に衝突を行い、この衝突によ
り被箭浄面から付着物ｔ−研掃除去し。Next, when cleaning the entire inside of the cryo-grinding equipment for pulverizing other raw materials to be crushed, etc., pour gravel dry ice S into the entire dry ice input port 3, and at the same time supply liquid nitrogen for cooling from the raw material and liquid nitrogen input rows. The low-temperature powder gP equipment is brought into operation. As a result, the gravel-like dry Ainu δ is cooled with liquid nitrogen and guided to the cryo-pulverized Tal together with the liquid nitrogen to become particles, and then rides on the airflow from the operation of the cryo-pulverizer and is carried by the cyclone 15 wind turbine similar to the raw material described in I. After passing through the sieve j and the secondary cyclone 6, the receiver is discharged onto a box 7. When this dry ice particle group moves along with the air current,
Complete layering of the deposits of the self-reported material in the low-temperature grinding device 7'c,
A collision is made with the fJJt clean surface of the raw material passage, and this collision removes the deposits from the surface to be cleaned.

付着物全停って上記のように受は箱７に至る。又。All the deposits stop and the receiver reaches box 7 as described above. or.

本例の場合、前記冷却用液体窒素は主として電化潜熱に
↓シ前記ドライアイス粒子群が低温粉砕装置内を移動す
る間冷却してドライアイス粒子群の昇華を防止し、ドラ
イアイス粒子群の研掃効果を維持する。こうして受は箱
７に排出された原料の付着物とドライアイス粒子群の円
、ドライアイス粒子群は昇華して放散するので、受は箱
７には原料の付着物のみが残留し、これｔ粉体製品とし
て回収する。In the case of this example, the cooling liquid nitrogen mainly converts into latent heat of electrification, and cools the dry ice particles while they are moving inside the cryo-pulverizer to prevent sublimation of the dry ice particles, thereby polishing the dry ice particles. Maintain cleaning effect. In this way, the receiver is a circle of the material deposits and dry ice particles discharged into box 7, and the dry ice particles sublime and dissipate, so that only the material deposits remain in box 7, and this t Collect as a powder product.

上記方法によシ行った洗浄のデータを表１に示す。Table 1 shows the data for cleaning performed according to the above method.

表１からも解るように、短時間の洗浄作業によシ回収率
の高い、即ち効率の良い洗浄が行われている。なお、更
に回収率を上げる必要のある場合には洗浄時間、ドライ
アイヌ使用量、液体窒素使用量を大々適宜増減すれに良
い。As can be seen from Table 1, the cleaning work is performed in a short time with a high recovery rate, that is, efficient cleaning is performed. In addition, if it is necessary to further increase the recovery rate, the washing time, the amount of dry nitrogen used, and the amount of liquid nitrogen used may be increased or decreased as appropriate.

発明の効果 上記のように不発明の洗浄法においては、ドライアイヌ
粒子群を洗浄剤として被洗浄面に衝突させて、被洗浄面
に付着している付着物を除去すること全特徴としておシ
、被洗浄面に残留した洗浄剤が洗浄後大気中に放置する
ことによシ昇華して被洗浄面に残らないので、洗浄剤除
去のための後洗浄、乾燥工程を要さず、洗浄後の洗浄剤
も昇華して放散するので、付着物を含む洗浄剤を大気中
に放置することによシ洗浄剤全容易に処分できると共に
付着物を＠易に回収することができる。Effects of the Invention As mentioned above, the uninvented cleaning method is characterized in that dry Ainu particles are used as a cleaning agent to collide with the surface to be cleaned to remove deposits adhering to the surface to be cleaned. , the cleaning agent remaining on the surface to be cleaned sublimes when left in the air after cleaning and does not remain on the surface to be cleaned, so there is no need for post-cleaning or drying steps to remove the cleaning agent, and the cleaning agent can be left in the air after cleaning. Since the cleaning agent also sublimates and dissipates, by leaving the cleaning agent containing deposits in the atmosphere, all of the cleaning agent can be easily disposed of, and the deposits can be easily recovered.

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

図面は本発明の一例方法を適用した低温粉砕装置の概念
図である。 ／・・・低温粉Ｐ機、２・・・原料、液体窒素投入口、
３・・・ドライアイヌ投入口、Ｉｌ・・・サイクロン、
Ｓ・・・風力篩、６・・・二次サイクロン、７・・・受
は箱、と・・・礫状ドライアイスThe drawing is a conceptual diagram of a cryo-pulverization apparatus to which an example method of the present invention is applied. /...Low temperature powder P machine, 2...Raw material, liquid nitrogen inlet,
3...Dry Ainu inlet, Il...Cyclone,
S... Wind sieve, 6... Secondary cyclone, 7... Receiving box, and... Gravel dry ice

Claims (1)

【特許請求の範囲】[Claims] ドライアイス粒子群を洗浄剤として被洗浄面に衝突させ
て、被洗浄面に付着している付着物を除去することを特
徴とするドライアイスによる洗浄法。A cleaning method using dry ice, characterized in that dry ice particles are used as a cleaning agent to collide with a surface to be cleaned to remove deposits adhering to the surface to be cleaned.