JPS6362507A - Automatic vacuum defoamer - Google Patents
Automatic vacuum defoamerInfo
- Publication number
- JPS6362507A JPS6362507A JP20575486A JP20575486A JPS6362507A JP S6362507 A JPS6362507 A JP S6362507A JP 20575486 A JP20575486 A JP 20575486A JP 20575486 A JP20575486 A JP 20575486A JP S6362507 A JPS6362507 A JP S6362507A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- defoaming
- tank
- foam
- degassing
- 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
Links
- 239000013530 defoamer Substances 0.000 title abstract 2
- 239000002002 slurry Substances 0.000 claims abstract description 47
- 238000007872 degassing Methods 0.000 claims description 18
- 238000009849 vacuum degassing Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 4
- 230000001174 ascending effect Effects 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000003254 anti-foaming effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ス５ラリー中の空気分を自動的に真空脱気し
て除去する装置に関し、特に、酸化亜鉛と各種添加物と
の電圧非直線抵抗体用の調合原料を、スプレードライヤ
による造粒に先立って減圧脱泡するのに好適な自動真空
脱泡装置に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an apparatus for automatically removing air in a slurry by vacuum degassing, and in particular, the present invention relates to an apparatus for automatically removing air in a slurry by vacuum degassing, and in particular, the present invention relates to an apparatus for automatically removing air in a slurry by vacuum degassing. The present invention relates to an automatic vacuum defoaming device suitable for defoaming a blended raw material for a non-linear resistor under reduced pressure prior to granulation using a spray dryer.
（従来の技術）
例えば、酸化亜鉛と各種添加物との電圧非直線抵抗体用
の調合原料を乳化機（例えばディスパーミル）等で混合
すると、混合物スラリー中に気泡が混入するため、造粒
に先立ってスラリーを脱泡する必要があった。この脱泡
作業としては、従来スラリーを真空脱気することにより
減圧脱泡するのが一般的であり、その目的のための種々
の真空脱泡装置が知られている。(Prior art) For example, when mixed raw materials for voltage non-linear resistors, such as zinc oxide and various additives, are mixed in an emulsifying machine (such as a disper mill), air bubbles are mixed into the mixture slurry, which prevents granulation. It was necessary to degas the slurry first. Conventionally, this defoaming operation is generally carried out by vacuum degassing the slurry, and various vacuum defoaming apparatuses for this purpose are known.
（発明が解決しようとする問題点）
しかしながら、これら従来の真空脱泡装置では、スラリ
ーを真空脱気することによって生じる泡が真空脱気槽内
に充満しないよう、減圧脱泡操作時に常時人間が監視し
て、泡が所定量より多くなったら装置を一旦止めて泡を
取り除く作業をくり返し行う必要があった。そのため、
減圧脱泡作業に時間がかかり、また熟練した作業員も必
要となる欠点があった。(Problem to be Solved by the Invention) However, in these conventional vacuum degassing devices, a person is constantly required to perform the vacuum degassing operation to prevent the vacuum degassing tank from being filled with bubbles generated by vacuum degassing the slurry. It was necessary to monitor the process and, if the amount of foam exceeded a predetermined amount, stop the device and repeat the process to remove the foam. Therefore,
The degassing process takes time and requires skilled workers.
本発明の目的は上述した不具合を解消して、スラリー等
の真空脱気作業を自動的に最短時間で行うことができる
真空脱泡装置を提供しようとするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a vacuum degassing device that can eliminate the above-mentioned problems and automatically perform vacuum degassing of slurry and the like in the shortest possible time.
（問題点を解決するだめの手段）
本発明の自動真空脱泡装置はスラリー中の空気分を自動
的に除去する装置であって、スラリーをその内部に貯留
して脱泡操作を行うための脱泡槽と、この脱泡槽の下部
に設けられた脱泡槽内へのスラリーの供給および排出を
行うためのスラリー給徘口と、脱泡槽内で回転可能な消
泡用およびスラリー攪拌用の少なくとも２枚の撹拌翼を
有する攪拌機と、脱気により生ずる泡の位置を検出する
ための泡センサーと、脱泡槽内を脱気するための真空脱
気装置とよりなることを特徴とするものである。(Means for solving the problem) The automatic vacuum defoaming device of the present invention is a device that automatically removes air from slurry, and is a device for storing the slurry inside and performing a defoaming operation. A defoaming tank, a slurry feed port provided at the bottom of the defoaming tank for supplying and discharging slurry into the defoaming tank, and a defoaming and slurry stirring device that can be rotated within the defoaming tank. A stirrer having at least two stirring blades, a foam sensor for detecting the position of bubbles generated by degassing, and a vacuum degassing device for degassing the inside of the defoaming tank. It is something to do.
（作 用）
上述した構成において、真空脱気作業中、脱泡槽での泡
の位置を泡センサーにより常時検知して、所定の設定値
より泡が多くなったら自動的に真空脱気作業を中断する
とともに、一定時間経過後泡が減少したら自動的に再び
真空脱気作業を開始するよう制御することにより、完全
に自動で脱泡作業を終了することができる。すなわち、
上述した真空脱気作業を（り返し実施して、スラリーが
沸騰したとき、所定の圧力以上になったとき、または所
定時間が経過したときに脱泡作業を中止することにより
、完全かつ自動的に脱泡作業を終了することができる。(Function) In the above-mentioned configuration, during vacuum degassing work, the bubble sensor constantly detects the position of bubbles in the defoaming tank, and when the number of bubbles exceeds a predetermined set value, the vacuum degassing work is automatically started. By interrupting the process and automatically starting the vacuum degassing operation again when the number of bubbles decreases after a certain period of time, the degassing operation can be completed completely automatically. That is,
Completely and automatically perform the vacuum degassing operation described above (by repeatedly performing the degassing operation and stopping the degassing operation when the slurry boils, when the pressure exceeds a predetermined value, or when a predetermined time elapses). defoaming work can be completed.
さらに、真空脱気作業中、常時攪拌機を回転することに
より消泡用撹拌翼により泡を割り泡を減少できるととも
に、スラリー撹拌用撹拌翼によりスラリーの沈降防止を
実施しているため、・減圧脱泡作業をより短時間に行う
ことができる。Furthermore, by constantly rotating the agitator during vacuum degassing work, the foam-defoaming stirring blade can break the bubbles and reduce the amount of foam, while the slurry stirring blade prevents the slurry from settling. Foaming work can be done in a shorter time.
（実施例）
第１図は本発明の自動真空脱泡装置の一実施例を示す部
分断面図である。本実施例では、例えばステンレス製の
圧力容器からなる脱泡槽１の下部に、脱泡すべきスラリ
ーを脱泡槽１内に供給するとともに脱泡後のスラリーを
外部へ排出するのに使用するスラリー給徘口２を設ける
。また、脱泡槽１の両側面に気密に開閉可能な点検窓３
−１と３−２を設け、脱泡槽１の内部の点検修理時に使
用する。さらに、脱泡槽１の上部中央には、脱泡槽１内
の所定位置に配置されるよう構成したスラリー攪拌用の
撹拌翼４−１と消泡用の撹拌翼４−２を有する攪拌機５
を設置する。各撹拌翼４−１゜４−２の構造は、脱泡槽
１内で回転可能であればどのようなものでも使用可能で
あり、例えば互いに１８０°開いた２木の部材より構成
すると好適である。(Embodiment) FIG. 1 is a partial sectional view showing an embodiment of an automatic vacuum defoaming device of the present invention. In this embodiment, the lower part of the defoaming tank 1 made of, for example, a stainless steel pressure vessel is used to supply the slurry to be defoamed into the defoaming tank 1 and to discharge the defoamed slurry to the outside. A slurry feed port 2 is provided. In addition, there are inspection windows 3 that can be airtightly opened and closed on both sides of the degassing tank 1.
-1 and 3-2 are provided and used when inspecting and repairing the inside of the degassing tank 1. Further, at the center of the upper part of the defoaming tank 1, a stirrer 5 having a stirring blade 4-1 for stirring the slurry and a stirring blade 4-2 for defoaming configured to be arranged at a predetermined position in the defoaming tank 1 is provided.
Set up. Any structure can be used for each of the stirring blades 4-1 and 4-2 as long as they can rotate within the degassing tank 1. For example, it is preferable to use two wooden members that are 180 degrees apart from each other. be.
また、脱泡槽ｌの上部には、その先端を脱泡槽１内に挿
入した脱泡槽１内の泡のレベルを測定するための泡セン
サー６と、脱泡槽１内を所定の真空度まで脱気すること
が可能な真空脱気装置７をバルブ８を介して装着する。Further, on the upper part of the defoaming tank 1, there is a foam sensor 6 for measuring the level of bubbles in the defoaming tank 1 whose tip is inserted into the defoaming tank 1, and a foam sensor 6 for measuring the level of bubbles in the defoaming tank 1, which is inserted into the defoaming tank 1. A vacuum degassing device 7 capable of degassing up to 300 degrees is installed via a valve 8.
スラリー給排操作、攪拌機５の回転、泡センサー６の出
力、真空脱気装置７およびバルブ８の制御等は、すべて
図示しない制御装置により実施している。泡センサー６
の構造としては、例えば対面電極構造として泡が接触す
ることによる電気の導通を検知するものが好適である。Slurry supply and discharge operations, rotation of the stirrer 5, output of the bubble sensor 6, control of the vacuum deaerator 7 and valve 8, etc. are all performed by a control device (not shown). bubble sensor 6
As for the structure, it is preferable to use, for example, a facing electrode structure that detects electrical continuity due to contact between bubbles.
上述した構造の自動真空脱泡装置の操作について以下に
説明する。まず、脱泡すべきスラリーをスラリー給徘口
２より脱泡槽１内へ供給する。このスラリー層の厚さは
最深部で２０ｃｍ程度とすると好ましい。次にバルブ８
を開けて真空脱気装置７により脱泡槽１内を脱気する。The operation of the automatic vacuum defoaming apparatus having the above-described structure will be explained below. First, slurry to be defoamed is supplied into the defoaming tank 1 from the slurry feed port 2 . The thickness of this slurry layer is preferably about 20 cm at the deepest part. Next valve 8
is opened and the inside of the defoaming tank 1 is degassed by the vacuum deaerator 7.
最終的な目標真空度は例えばｌ Ｑ 鰭ＩＩ ｇに設定
する。脱泡槽１内の脱気が進行すると、スラリー内の空
気分は泡として脱泡槽１内を上昇する。脱気作業中攪拌
機５は常時回転するため、攪拌Ｍ４−１ ４−２も回転
し、撹拌翼４−１によりスラリーの下降を防止するとと
もに撹拌翼４−２により上昇してくる泡を破壊すること
により消泡している。The final target degree of vacuum is set to, for example, l Q fin II g. As the degassing in the defoaming tank 1 progresses, the air in the slurry rises in the defoaming tank 1 as bubbles. Since the agitator 5 constantly rotates during deaeration work, the agitators M4-1 and 4-2 also rotate, and the agitating blades 4-1 prevent the slurry from falling, while the agitating blades 4-2 destroy rising bubbles. This causes defoaming.
脱気がさらに進行すると、撹拌翼４−２の消泡作用にも
かかわらず泡のレベルはさらに上昇し、泡の上端が泡セ
ンサー６の先端に達したときにパルプ８を閉じて脱気作
業を一旦中断する。撹拌翼４−２の消泡作用により泡の
レベルを下げる。中断してから予め設定した所定時間経
過後、再び脱気を開始して以後同様の作業をくり返し、
最終的に脱泡槽１内の真空度が予め設定した例えばＩｏ
ｎｓＨｇに達したとき、脱泡作業を中止する。As the deaeration progresses further, the level of the foam further increases despite the antifoaming action of the stirring blade 4-2, and when the upper end of the foam reaches the tip of the foam sensor 6, the pulp 8 is closed and the deaeration operation begins. be temporarily interrupted. The foam level is lowered by the antifoaming action of the stirring blade 4-2. After a preset period of time has elapsed since the interruption, deaeration is started again and the same operation is repeated.
Finally, the degree of vacuum in the degassing tank 1 is set in advance, for example, Io.
When nsHg is reached, the defoaming operation is stopped.
脱泡作業中止後のスラリーは、スラリー給徘口２を介し
て脱泡槽１内から排出する。このとき、脱泡槽１内に圧
縮空気を供給すると好ましい。After the defoaming operation is stopped, the slurry is discharged from the defoaming tank 1 through the slurry supply port 2. At this time, it is preferable to supply compressed air into the defoaming tank 1.
本発明は上述した実施例にのみ限定されるものではな（
、幾多の変形、変更が可能である。例えば、上述した実
施例では、脱気作業の中断をタイマーにより一定時間経
過後に再開したが、泡センサーをさらに１本設けて脱気
作業中断により減少する泡のレベルを検出することによ
り、所定レベルよりも泡が下がったとき再開するよう構
成することもできる。また、脱気作業の中止を脱泡槽Ｉ
内の真空度により制御したが、スラリーが沸騰した時点
あるいは複数回脱泡を繰返した時点で脱気作業を中止す
ることも可能である。ざらに、脱気すべきスラリーの温
度を一定にしてスラリーの脱泡率を一定にするため、脱
泡槽１の下部外側にジャケットを設け、このジャケット
に水又は温水を流すことによりスラリーの冷却又は加熱
をするよう構成することもできる。また、上述した実施
例では、消泡用及びスラリー撹拌用の２枚の撹拌翼を使
用したが、その翼数はこれに限定されるものではなくそ
れぞれが複数枚あってもその目的を達成できればよいも
のである。The present invention is not limited only to the embodiments described above (
, many modifications and changes are possible. For example, in the above-mentioned embodiment, the interruption of the deaeration work is restarted after a certain period of time has elapsed using a timer, but by providing one more bubble sensor to detect the level of foam that decreases due to the interruption of the deaeration work, it is possible to reach a predetermined level. It can also be configured to restart when the bubbles drop further. Also, stop the deaeration work in the degassing tank I.
Although this was controlled by the degree of vacuum inside, it is also possible to stop the degassing operation when the slurry boils or when degassing is repeated multiple times. In general, in order to keep the temperature of the slurry to be degassed constant and the defoaming rate of the slurry constant, a jacket is provided outside the lower part of the degassing tank 1, and the slurry is cooled by flowing water or warm water through this jacket. Alternatively, it can also be configured to heat. In addition, in the above-mentioned embodiment, two stirring blades were used, one for defoaming and one for stirring the slurry, but the number of blades is not limited to this. It's good.
（発明の効果）
以上詳細に説明したところから明らかなように、本発明
の自動真空脱泡装置によれば、脱泡槽での泡の位置を泡
センサーにより常時検知して、脱泡作業を自動的に制御
して所定の脱泡を達成しているため、自動的かつ短時間
でしがも人手を煩わずことなくスラリー〇脱泡作業を終
了することができる。(Effects of the Invention) As is clear from the detailed explanation above, according to the automatic vacuum defoaming device of the present invention, the position of the bubbles in the defoaming tank is constantly detected by the foam sensor, and the defoaming work is carried out. Since predetermined defoaming is achieved through automatic control, the slurry defoaming work can be completed automatically, in a short time, and without any manual effort.
第１図は本発明の自動真空脱泡装置の一実施例を示す部
分断面図である。
１・・・脱泡槽 ２・・・スラリー給徘口３
−１．３−２・・・点検窓
４−１．４−２・・・撹拌翼FIG. 1 is a partial sectional view showing an embodiment of the automatic vacuum defoaming device of the present invention. 1... Defoaming tank 2... Slurry feed port 3
-1.3-2...Inspection window 4-1.4-2...Stirring blade
Claims (1)
て、スラリーをその内部に貯留して脱泡操作を行うため
の脱泡槽と、この脱泡槽の下部に設けられ脱泡槽内への
スラリーの供給および排出を行うためのスラリー給徘口
と、脱泡槽内で回転可能な消泡用およびスラリー撹拌用
の少なくとも２枚の撹拌翼を有する攪拌機と、脱気によ
り生ずる泡の位置を検出するための泡センサーと、脱泡
槽内を脱気するための真空脱気装置とよりなることを特
徴とする自動真空脱泡装置。 ２、前記脱泡槽を２重タンク構造として、これにより脱
泡槽内のスラリーの加熱又は冷却が可能な特許請求の範
囲第１項記載の自動真空脱泡装置。[Scope of Claims] 1. A device for automatically removing air in slurry, comprising a defoaming tank for storing slurry therein and performing a defoaming operation, and a lower part of the defoaming tank. a slurry feed port provided in the defoaming tank for supplying and discharging slurry into the defoaming tank, and a stirrer having at least two stirring blades for defoaming and slurry stirring that are rotatable in the defoaming tank. An automatic vacuum defoaming device comprising: a bubble sensor for detecting the position of bubbles generated by degassing; and a vacuum degassing device for degassing the inside of a defoaming tank. 2. The automatic vacuum defoaming apparatus according to claim 1, wherein the defoaming tank has a double tank structure, whereby the slurry in the defoaming tank can be heated or cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20575486A JPH0238242B2 (en) | 1986-09-03 | 1986-09-03 | JIDOSHINKUDATSUHOSOCHI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20575486A JPH0238242B2 (en) | 1986-09-03 | 1986-09-03 | JIDOSHINKUDATSUHOSOCHI |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6362507A true JPS6362507A (en) | 1988-03-18 |
| JPH0238242B2 JPH0238242B2 (en) | 1990-08-29 |
Family
ID=16512106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20575486A Expired - Lifetime JPH0238242B2 (en) | 1986-09-03 | 1986-09-03 | JIDOSHINKUDATSUHOSOCHI |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0238242B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004290859A (en) * | 2003-03-27 | 2004-10-21 | Nippon Paper Industries Co Ltd | Method and apparatus for deaerating liquid |
| CN101972560A (en) * | 2010-09-07 | 2011-02-16 | 苏州世名科技股份有限公司 | Defoaming device for high viscosity liquid product |
| JP2015213877A (en) * | 2014-05-12 | 2015-12-03 | 株式会社井上製作所 | Mixer with bubble breaking blade |
-
1986
- 1986-09-03 JP JP20575486A patent/JPH0238242B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004290859A (en) * | 2003-03-27 | 2004-10-21 | Nippon Paper Industries Co Ltd | Method and apparatus for deaerating liquid |
| CN101972560A (en) * | 2010-09-07 | 2011-02-16 | 苏州世名科技股份有限公司 | Defoaming device for high viscosity liquid product |
| JP2015213877A (en) * | 2014-05-12 | 2015-12-03 | 株式会社井上製作所 | Mixer with bubble breaking blade |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0238242B2 (en) | 1990-08-29 |
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