JPH08333181A - Foam generator for producing foamed concrete and control of variation in unit volume mass of concrete foam - Google Patents
Foam generator for producing foamed concrete and control of variation in unit volume mass of concrete foamInfo
- Publication number
- JPH08333181A JPH08333181A JP16011895A JP16011895A JPH08333181A JP H08333181 A JPH08333181 A JP H08333181A JP 16011895 A JP16011895 A JP 16011895A JP 16011895 A JP16011895 A JP 16011895A JP H08333181 A JPH08333181 A JP H08333181A
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- foaming agent
- pressure
- aqueous solution
- flow rate
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は気泡コンクリート製造用
気泡発生装置、より具体的にはプレフォーム法により気
泡コンクリートを製造する際に混合する気泡を製造する
装置および該気泡の単位質量の変動の制御方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble generating apparatus for producing aerated concrete, more specifically, an apparatus for producing bubbles to be mixed when producing aerated concrete by a preforming method, and a unit mass variation of the bubbles. Regarding control method.
【０００２】[0002]
【従来の技術】気泡コンクリートを製造する場合、コン
クリート中に気泡を混入する方法として、起泡剤の化学
反応による方法や、ミックスフォーム法あるいはプレフ
ォーム法による方法等が知られている。2. Description of the Related Art In the production of aerated concrete, as a method for mixing bubbles in concrete, there are known a method by a chemical reaction of a foaming agent, a method by a mix foam method or a preform method.
【０００３】このうち、プレフォーム法により気泡を混
入する方法は、専用の気泡発生装置が必要ではあるが、
気泡コンクリートが比較的容易に製造できるという利点
があり広く普及している。プレフォーム法により気泡コ
ンクリートを製造する場合、生成した気泡の単位容積質
量が気泡の品質に影響を与え、さらには気泡コンクリー
トの品質を左右する。このため、気泡の単位容積質量を
バラツキなく所定の値に制御することが、高品質の気泡
コンクリートを製造するうえで重要な課題となる。Among them, the method of mixing bubbles by the preform method requires a dedicated bubble generator,
Aerated concrete has the advantage that it can be manufactured relatively easily and is widely used. When producing aerated concrete by the preform method, the unit volume mass of the produced bubbles affects the quality of the bubbles, and further affects the quality of the aerated concrete. Therefore, controlling the unit volume mass of bubbles to a predetermined value without variation is an important issue for producing high-quality cellular concrete.
【０００４】図２は従来技術における気泡発生装置を示
したものである。従来の気泡発生装置は、圧搾空気供給
部１０、起泡剤水溶液供給部１２、圧搾空気圧力調整器
（Ａ）１４、圧搾空気流量調節器１８、起泡剤水溶液流
量調節器２２および図３に示した構図の気泡形成部２４
により構成されている。このような気泡発生装置での気
泡の製造は、以下のようにしてなされていた。すなわ
ち、FIG. 2 shows a bubble generator in the prior art. The conventional air bubble generator includes a compressed air supply unit 10, a foaming agent aqueous solution supply unit 12, a compressed air pressure regulator (A) 14, a compressed air flow rate controller 18, a foaming agent aqueous solution flow rate controller 22 and FIG. Bubble formation part 24 of the composition shown
It consists of. The production of bubbles in such a bubble generator has been performed as follows. That is,
【０００５】（１）予め起泡剤を水で薄めた起泡剤水溶
液を起泡剤水溶液供給部分１２に入れておく。 （２）次に、圧搾空気供給部分１０で造られた約７ｋｇ
ｆ／ｃｍ2 の圧搾空気が、圧搾空気圧力調節器（Ａ）１
４により５〜６ｋｇｆ／ｃｍ2 に減圧される。 （３）圧搾空気圧力調節器（Ａ）１４により減圧された
圧搾空気は、圧搾空気流量調節器１８により流量が調節
され、気泡形成部２４へ送られる。 （４）圧搾空気圧力調節器（Ａ）１４により減圧された
圧搾空気はまた、起泡剤水溶液供給部分１２へ送られ、
この圧搾空気により送り出された起泡剤水溶液が起泡剤
水溶液流量調節器２２により流量が調整されて、気泡形
成部２４へ圧送される。 （５）気泡形成部２４において、流量調整された圧搾空
気と起泡剤水溶液とが合流されて気泡が形成される。(1) A foaming agent aqueous solution prepared by diluting the foaming agent with water in advance is placed in the foaming agent aqueous solution supply portion 12. (2) Next, about 7 kg produced by the compressed air supply part 10
Compressed air of f / cm 2 is compressed air pressure regulator (A) 1
4, the pressure is reduced to 5 to 6 kgf / cm 2 . (3) The compressed air whose pressure has been reduced by the compressed air pressure controller (A) 14 has its flow rate adjusted by the compressed air flow rate controller 18 and is sent to the bubble forming unit 24. (4) The compressed air decompressed by the compressed air pressure controller (A) 14 is also sent to the foaming agent aqueous solution supply portion 12,
The foaming agent aqueous solution sent out by the compressed air has its flow rate adjusted by the foaming agent aqueous solution flow rate controller 22 and is pressure-fed to the bubble forming unit 24. (5) In the bubble forming part 24, the compressed air whose flow rate has been adjusted and the foaming agent aqueous solution are combined to form bubbles.
【０００６】このように、従来技術における気泡発生装
置では、気泡の品質、すなわち単位容積質量の調節は、
流量計と流量調節バルブ等からなる圧搾空気流量調節器
１８および起泡剤水溶液流量調節器２２により行われて
いた。具体的には、気泡形成部２４に入る圧搾空気およ
び起泡剤水溶液の各流量をこれら調節器１８および２２
の流量計で測定し、この値に基づいて各調節バルブを操
作することにより気泡の単位容積質量の調整を行なって
いた。As described above, in the bubble generating device in the prior art, the quality of bubbles, that is, the adjustment of the unit volume mass is
This is performed by the compressed air flow rate controller 18 and the foaming agent aqueous solution flow rate controller 22 which include a flow meter and a flow rate control valve. Specifically, the flow rates of the compressed air and the aqueous foaming agent solution that enter the bubble forming unit 24 are adjusted by the regulators 18 and 22.
It was measured by the flow meter of No. 2, and the unit volume mass of the bubbles was adjusted by operating each control valve based on this value.
【０００７】[0007]
【発明が解決しようとする課題】しかしながらこのよう
な従来技術における気泡発生装置では、圧搾空気流量調
節器１８および起泡剤水溶液流量調節器２２により気泡
形成部２４に供給される圧搾空気や起泡剤水溶液の流量
は調整されているが、気体である圧搾空気と液体である
起泡剤水溶液では流量が大きく違うため、単位容積質量
と直接結びつく両者の流量比のバランスを制御すること
は流量計だけでは難しく、脈動などによる該バランスの
変化を十分抑えることができなかった。However, in such a bubble generating device in the prior art, the compressed air or the foam generated by the compressed air flow rate controller 18 and the foaming agent aqueous solution flow rate controller 22 is supplied to the bubble forming section 24. Although the flow rate of the aqueous solution of the agent is adjusted, the flow rate of compressed air that is a gas and the aqueous solution of a foaming agent that is a liquid are very different.Therefore, it is necessary to control the balance of the flow rate ratio of the two directly linked to the unit volume mass. It was difficult to do so, and it was not possible to sufficiently suppress the change in the balance due to pulsation.
【０００８】この結果、気泡の単位容積質量が圧搾空気
量と起泡剤水溶液量の脈動などに伴って変動し、気泡の
品質、すなわち気泡の単位容積質量の管理が不十分であ
った。気泡の単位容積質量の管理が十分に行われない
と、気泡の保持力（消泡しない）が変化し、強度や比重
などにバラツキのある気泡コンクリートが製造される。
このため、安定した品質の気泡コンクリートを製造する
ことが難しく、場合によっては所定の品質を満足できな
い気泡コンクリートが製造される可能性も高かった。こ
のように従来技術では、安定した品質の気泡コンクリー
トの製造が困難であるとともに、品質管理に要する時間
が多くなり生産性の低下を招くという問題も生じた。そ
こで、本発明者らは気泡の単位容積質量の変動をなくす
べく鋭意検討した結果、圧搾空気と起泡剤水溶液の流量
比のバランスを圧力（特に差圧）でもって管理すれば良
いことを見出し、本発明を完成させるに至った。As a result, the unit volume / mass of the bubbles fluctuates with the pulsation of the compressed air amount and the amount of the aqueous foaming agent solution, and the quality of the bubbles, that is, the unit volume / mass of the bubbles is insufficiently controlled. If the unit volume and mass of air bubbles is not sufficiently controlled, the air bubble holding power (does not defoam) changes, and aerated concrete with variations in strength and specific gravity is produced.
For this reason, it is difficult to manufacture aerated concrete of stable quality, and in some cases, there is a high possibility that aerated concrete that does not satisfy a predetermined quality is manufactured. As described above, the conventional technology has a problem that it is difficult to manufacture aerated concrete of stable quality, and that the time required for quality control increases and the productivity decreases. Therefore, as a result of intensive studies to eliminate the fluctuation of the unit volume mass of the bubbles, the present inventors have found that the balance of the flow rate ratio between the compressed air and the foaming agent aqueous solution may be controlled by the pressure (particularly the differential pressure). The present invention has been completed.
【０００９】[0009]
【課題を解決するための手段】すなわち、本発明の第一
は圧搾空気供給部、圧搾空気圧力調節器（Ａ）、起泡剤
水溶液供給部、圧搾空気と起泡剤水溶液とが混合し気泡
を形成する気泡形成部、気泡形成部へ供給する圧搾空気
と起泡剤水溶液の各流量を制御する流量調節器などから
なる気泡コンクリート製造用気泡発生装置において、圧
搾空気圧力調節器（Ａ）と気泡形成部との間に圧搾空気
圧力調節器（Ｂ）を、起泡剤水溶液供給部と気泡形成部
との間に起泡剤水溶液圧力調節器を各々有することを特
徴とする気泡コンクリート製造用気泡発生装置であり、The first aspect of the present invention is to provide a compressed air supply unit, a compressed air pressure regulator (A), a foaming agent aqueous solution supply unit, a mixture of compressed air and a foaming agent aqueous solution, and bubbles. In a bubble generating apparatus for producing aerated concrete, which comprises a bubble forming part for forming a bubble, a flow rate controller controlling each flow rate of compressed air supplied to the bubble forming part and a foaming agent aqueous solution, a compressed air pressure controller (A) and For the production of aerated concrete, comprising a compressed air pressure controller (B) between the foam forming part and a foaming agent aqueous solution pressure controller between the foaming agent aqueous solution supply part and the bubble forming part. Is a bubble generator,
【００１０】本発明の第二は上記記載の気泡コンクリー
ト製造用気泡発生装置による気泡の製造において、気泡
形成部前段の圧搾空気の圧力を圧搾空気圧力調節器
（Ｂ）により１．０−５．０ｋｇｆ／ｃｍ2 に、起泡剤
水溶液の圧力を起泡剤水溶液圧力調節器により１．０−
５．０ｋｇｆ／ｃｍ2 に各々調整するとともに、さら
に、起泡剤水溶液の該圧力を圧搾空気の該圧力より０．
１−０．５ｋｇｆ／ｃｍ2 高くなるように調整して制御
することを特徴とする気泡の単位容積質量の変動の制御
方法である。In the second aspect of the present invention, in the production of bubbles by the above-described bubble generating apparatus for producing aerated concrete, the pressure of the compressed air in the preceding stage of the bubble forming portion is controlled by the compressed air pressure controller (B) to be 1.0-5. The pressure of the aqueous foaming agent solution was adjusted to 0 kgf / cm 2 by 1.0-
The pressure of the aqueous foaming agent solution was adjusted to 0.5 kgf / cm 2 and the pressure of the compressed air was adjusted to 0.
It is a control method for fluctuations in the unit volume mass of bubbles, which is controlled by adjusting it so as to be 1-0.5 kgf / cm 2 .
【００１１】以下、本発明を詳細に説明する。本発明の
気泡コンクリート製造用気泡発生装置は例えば図１に示
すものであり圧搾空気供給部１０、起泡剤水溶液供給部
１２、圧搾空気圧力調節器（Ａ）１４、圧搾空気圧力調
節器（Ｂ）１６、圧搾空気流量調節器１８、起泡剤水溶
液圧力調節器２０、起泡剤水溶液流量調節器２２および
気泡形成部２４により構成されている。なお、図１にお
いて、図２に示した従来技術と同じ構成要素には同一の
符号が記してある。図１において、圧搾空気供給部１０
は空気を圧縮する一般的なコンプレッサーであり、圧縮
した空気（約７ｋｇｆ／ｃｍ2 ）を配管１００を介して
圧搾空気圧力調整器（Ａ）１４に供給する。圧搾空気圧
力調整器（Ａ）１４は、一般に用いられる気体用の調整
器であり、配管１０２を介して圧搾空気圧力調節器
（Ｂ）１６に、配管１０４を介して起泡剤水溶液供給部
１２に接続されている。圧搾空気圧力調整器（Ａ）１４
は、圧搾空気供給部１０より送られてきた圧搾空気を５
〜６ｋｇｆ／ｃｍ2 に減圧し、これら圧搾空気圧力調節
器（Ｂ）１６および起泡剤水溶液供給部１２に供給す
る。The present invention will be described in detail below. The bubble generating apparatus for producing aerated concrete of the present invention is, for example, as shown in FIG. 1, and includes a compressed air supply unit 10, a foaming agent aqueous solution supply unit 12, a compressed air pressure regulator (A) 14, and a compressed air pressure regulator (B). ) 16, a compressed air flow rate controller 18, a foaming agent aqueous solution pressure controller 20, a foaming agent aqueous solution flow rate controller 22, and a bubble forming part 24. In FIG. 1, the same components as those of the conventional technique shown in FIG. 2 are designated by the same reference numerals. In FIG. 1, the compressed air supply unit 10
Is a general compressor that compresses air, and supplies compressed air (about 7 kgf / cm 2 ) to the compressed air pressure regulator (A) 14 via the pipe 100. The compressed air pressure regulator (A) 14 is a commonly used regulator for gas, and is a compressed air pressure regulator (B) 16 via a pipe 102 and a foaming agent aqueous solution supply unit 12 via a pipe 104. It is connected to the. Compressed air pressure regulator (A) 14
Is the compressed air sent from the compressed air supply unit 10.
The pressure is reduced to ˜6 kgf / cm 2 , and the compressed air pressure regulator (B) 16 and the foaming agent aqueous solution supply unit 12 are supplied.
【００１２】起泡剤水溶液供給部１２は、一般的な圧力
タンク（耐圧１０ｋｇｆ／ｃｍ2 程度のもの）で配管１
０２と接続される圧搾空気取入れ口、起泡剤水溶液を投
入できる投入口および起泡剤水溶液を吐出できる吐出口
が設けられている。起泡剤水溶液供給部１２は、圧搾空
気取入れ口より圧搾空気を入力すると、吐出口より起泡
剤水溶液を吐出する。この吐出口は配管１０６を介して
起泡剤水溶液圧力調整器２０に接続され、吐出された起
泡剤水溶液はこの調整器２０に送られる。The foaming agent aqueous solution supply unit 12 is a general pressure tank (having a pressure resistance of about 10 kgf / cm 2 ) and a pipe 1
02, a compressed air intake port, an input port through which the foaming agent aqueous solution can be charged, and a discharge port through which the foaming agent aqueous solution can be discharged are provided. When the compressed air is input from the compressed air intake port, the foaming agent aqueous solution supply unit 12 discharges the foaming agent aqueous solution from the discharge port. This discharge port is connected to the foaming agent aqueous solution pressure regulator 20 via the pipe 106, and the discharged foaming agent aqueous solution is sent to the regulator 20.
【００１３】圧搾空気圧力調節器（Ｂ）１６は圧力計と
圧搾空気圧力調節バルブ等から形成されている。圧搾空
気圧力調節器（Ｂ）１６の圧力計は一般的なブルドン管
式のものが使用でき、圧搾空気圧力調節バルブは１〜５
ｋｇｆ／ｃｍ2 に減圧できる気体用の減圧弁が適用可能
である。圧搾空気圧力調節器（Ｂ）１６は配管１０８を
介して圧搾空気流量調節器１８に接続され、所望の圧力
に調整された圧搾空気がこれに送られる。圧搾空気圧力
調節器（Ａ）１４も上記と同様であり、圧搾空気圧力調
節バルブが５〜６ｋｇｆ／ｃｍ2 に減圧できる気体用の
減圧弁であればよい。The compressed air pressure regulator (B) 16 is composed of a pressure gauge, a compressed air pressure regulating valve and the like. As the pressure gauge of the compressed air pressure regulator (B) 16, a general Bourdon tube type can be used, and the compressed air pressure regulator valve is 1 to 5
A pressure reducing valve for gas that can reduce the pressure to kgf / cm 2 is applicable. The compressed air pressure controller (B) 16 is connected to the compressed air flow rate controller 18 via the pipe 108, and the compressed air adjusted to a desired pressure is sent to this. The compressed air pressure adjuster (A) 14 is also the same as above, and the compressed air pressure control valve may be a gas pressure reducing valve capable of reducing the pressure to 5 to 6 kgf / cm 2 .
【００１４】また、起泡剤水溶液圧力調節器２０はブル
ドン管式圧力計等が用いられる。起泡剤水溶液圧力調節
器２０は１〜５ｋｇｆ／ｃｍ2 に減圧できる圧力調節器
であり、これのバルブは１〜５ｋｇｆ／ｃｍ2 に減圧で
きる液体用の減圧弁が用いられる。起泡剤水溶液圧力調
節器２０は配管１１２を介して起泡剤水溶液流量調節器
２２に接続され、所望の圧力に調整された起泡剤水溶液
がこれに送られる。As the foaming agent aqueous solution pressure controller 20, a Bourdon tube type pressure gauge or the like is used. The foaming agent aqueous solution pressure controller 20 is a pressure controller capable of reducing the pressure to 1 to 5 kgf / cm 2 , and the valve thereof is a pressure reducing valve for a liquid capable of reducing the pressure to 1 to 5 kgf / cm 2 . The foaming agent aqueous solution pressure controller 20 is connected to the foaming agent aqueous solution flow rate controller 22 via the pipe 112, and the foaming agent aqueous solution adjusted to a desired pressure is sent to this.
【００１５】なお、上記圧搾空気圧力調節器（Ｂ）１
６、起泡剤水溶液圧力調節器２０は、本発明例を示す図
１では、いずれも各流量調節器（１８，２２）の前段に
設置されているが、該圧搾空気圧力調節器（Ｂ）１６
は、圧搾空気圧力調節器（Ａ）１４と気泡形成部２４と
の間にあればよく、また、該起泡剤水溶液圧力調節器２
０も起泡剤水溶液供給部１２と気泡形成部２４との間に
あればよく、図７の例などいずれも本発明の範囲であ
る。The compressed air pressure regulator (B) 1
6, the foaming agent aqueous solution pressure regulator 20 is installed in front of each flow rate regulator (18, 22) in FIG. 1 showing an example of the present invention, but the compressed air pressure regulator (B) 16
Need only be between the compressed air pressure regulator (A) 14 and the bubble forming part 24, and the foaming agent aqueous solution pressure regulator 2
It suffices that 0 is provided between the foaming agent aqueous solution supply part 12 and the bubble forming part 24, and all the examples such as FIG. 7 are within the scope of the present invention.
【００１６】圧搾空気流量調節器１８、起泡剤水溶液流
量調節器２２はいずれも従来のものが適用できそれぞ
れ、圧搾空気流量、起泡剤水溶液流量を調節し、配管１
１０、配管１１４を介して気泡形成部２４に送る調節器
である。気泡形成部２４は、たとえば図３に示した断面
構造を備えた気泡形成部である。A conventional one can be applied to both the compressed air flow rate controller 18 and the foaming agent aqueous solution flow rate controller 22, and the compressed air flow rate and the foaming agent aqueous solution flow rate can be adjusted respectively, and the pipe 1
10 is an adjuster for sending to the bubble forming unit 24 via the pipe 114. The bubble forming part 24 is a bubble forming part having the cross-sectional structure shown in FIG. 3, for example.
【００１７】なお、圧搾空気または起泡剤水溶液を流す
配管１００〜１１４は、約１０ｋｇｆ／ｃｍ2 の圧力に
耐えられるようなパイプである。また、パイプの径は各
流量に応じ１〜５ｋｇｆ／ｃｍ2 の圧力が設定できる径
にしておく必要がある。圧搾空気および起泡剤水溶液の
圧力の絶対値（ｋｇｆ／ｃｍ2 ）は、圧力調節器（Ｂ）
１６、２０に付属の圧力調節バルブの開閉により制御可
能である。また、図１に示した実施例において、圧力調
節器（Ｂ）１６、２０により起泡剤水溶液の圧力と圧搾
空気の圧力の差（起泡剤水溶液の圧力が圧搾空気より
０．１〜０．５ｋｇｆ／ｃｍ2 高い状態）を検出して制
御する。The pipes 100 to 114 through which the compressed air or the aqueous foaming agent solution flows are pipes capable of withstanding a pressure of about 10 kgf / cm 2 . Further, the diameter of the pipe needs to be set such that a pressure of 1 to 5 kgf / cm 2 can be set according to each flow rate. The absolute value (kgf / cm 2 ) of the pressure of the compressed air and the aqueous solution of the foaming agent is the pressure controller (B).
It can be controlled by opening and closing the pressure control valve attached to the 16 and 20. Further, in the embodiment shown in FIG. 1, the difference between the pressure of the foaming agent aqueous solution and the pressure of the compressed air by the pressure regulators (B) 16 and 20 (the pressure of the foaming agent aqueous solution is 0.1 to 0 than the compressed air). 0.5 kgf / cm 2 high state) is detected and controlled.
【００１８】この制御は、たとえば作業者がブルドン管
式圧力計などを用いて、その圧搾空気の圧力および起泡
剤水溶液の圧力の絶対値の差を算出し、この差が一定に
なるように、圧搾空気および起泡剤水溶液の圧力の絶対
値を各圧力調整バルブで調整することにより可能であ
る。なお、圧力調節器（Ｂ）１６、２０の圧力調節バル
ブにより一度調整を行えば、圧搾空気圧力調節器（Ａ）
１４の調整を変えないかぎり、気泡形成部２４に送られ
る圧搾空気の圧力および起泡剤水溶液の圧力は頻繁に変
動しない。In this control, for example, an operator uses a Bourdon tube type pressure gauge or the like to calculate the difference between the absolute values of the compressed air pressure and the foaming agent aqueous solution pressure so that this difference becomes constant. It is possible by adjusting the absolute values of the pressures of the compressed air and the aqueous foaming agent solution with the respective pressure adjusting valves. It should be noted that the compressed air pressure regulator (A) can be adjusted once the pressure regulator valves of the pressure regulators (B) 16 and 20 have been adjusted.
Unless the adjustment of 14 is changed, the pressure of the compressed air sent to the bubble forming part 24 and the pressure of the aqueous foaming agent solution do not change frequently.
【００１９】気泡形成部２４は、図３に示すように、送
られてきた圧搾空気と起泡剤水溶液とを合流し、第１の
スチールウール層、碍子大層、碍子小層、第２のスチー
ルウール層を通過させることによって気泡を製造する。
また、気泡形成部２４は、例えば円筒状の鋼管の中にガ
ラスビーズまたは碍子が入っている従来からあるものが
使用できる。さらに、気泡形成部２４は図３に示す構造
のものがあるが、これは、大小異なる大きさの碍子が多
数鋼管の中に充填されており、その碍子の両端をスチー
ルウール等のようなもので挟み込んで形成されている。As shown in FIG. 3, the bubble forming unit 24 joins the sent compressed air and the foaming agent aqueous solution, and joins the first steel wool layer, the large insulator layer, the small insulator layer, and the second steel layer. Bubbles are produced by passing through a layer of wool.
Further, as the bubble forming part 24, for example, a conventional one in which glass beads or an insulator is contained in a cylindrical steel pipe can be used. Further, the bubble forming part 24 has a structure shown in FIG. 3, in which a large number of insulators of different sizes are filled in a steel pipe, and both ends of the insulator are made of steel wool or the like. It is sandwiched between.
【００２０】次に本発明装置の動作及びこれによる気泡
の単位容積質量の制御を図１の例に基づいて示す。図１
において、予め起泡剤を水で薄めた起泡剤水溶液を起泡
剤水溶液供給部１２に入れておく。起泡剤としては、動
物質蛋白質系や界面活性剤系いずれの起泡剤も使用可能
であり特に限定されるものではない。起泡剤水溶液の濃
度は４〜１０％程度が好ましい。次に、圧搾空気供給部
１０で造られた約７ｋｇｆ／ｃｍ2の圧搾空気を、圧搾
空気圧力調節器（Ａ）１４により５〜６ｋｇｆ／ｃｍ2
に減圧する。これは、元圧からの圧搾空気の脈動を少な
くし圧搾空気圧力調節器（Ｂ）１６での制御を容易にす
るためである。Next, the operation of the device of the present invention and the control of the unit volume mass of bubbles by the operation will be described based on the example of FIG. FIG.
In, the foaming agent aqueous solution prepared by diluting the foaming agent with water is placed in the foaming agent aqueous solution supply unit 12. As the foaming agent, foaming agents of both animal protein type and surfactant type can be used and are not particularly limited. The concentration of the aqueous foaming agent solution is preferably about 4 to 10%. Then, the compressed air of about 7 kgf / cm 2, which was built in compressed air supply unit 10, compressed air pressure regulator (A) 14 by 5~6kgf / cm 2
Depressurize to. This is to reduce the pulsation of the compressed air from the original pressure and facilitate the control by the compressed air pressure adjuster (B) 16.
【００２１】減圧された圧搾空気は圧搾空気圧力調節器
（Ｂ）１６に送られ、所望の気泡の吐出量から算出され
た圧搾空気の流量に基づき１〜５ｋｇｆ／ｃｍ2 の範囲
で設定、調節される。この範囲をはずれると圧力検出に
よる流量調節がし難くなるので好ましくない。その後、
圧搾空気は、圧搾空気流量調節器１８を通り、ここで流
量の確認が行なわれ、気泡形成部２４へ送られる。ここ
で、好ましい圧搾空気の所定量は、およそ５０〜２５０
Ｌ／分の範囲である。The depressurized compressed air is sent to the compressed air pressure controller (B) 16 and is set and adjusted in the range of 1 to 5 kgf / cm 2 based on the flow rate of the compressed air calculated from the discharge amount of desired bubbles. To be done. Outside this range, it becomes difficult to control the flow rate by pressure detection, which is not preferable. afterwards,
The compressed air passes through the compressed air flow rate controller 18, where the flow rate is confirmed, and the compressed air is sent to the bubble forming unit 24. Here, the preferable predetermined amount of compressed air is about 50 to 250.
It is in the range of L / min.
【００２２】圧搾空気圧力調節器（Ａ）１４により減圧
された圧搾空気はまた、起泡剤水溶液供給部１２へ送ら
れ、これによりこの供給部１２にあらかじめ入れてある
起泡剤水溶液が起泡剤水溶液圧力調節器２０に送り出さ
れる。そして、所望の気泡の吐出量から算出された起泡
剤水溶液の流量に基づき１〜５ｋｇｆ／ｃｍ2 の範囲で
設定、調節される。この範囲をはずれると圧力検出によ
る流量調節がし難くなるので好ましくない。The compressed air decompressed by the compressed air pressure controller (A) 14 is also sent to the foaming agent aqueous solution supplying section 12, whereby the foaming agent aqueous solution previously put in this supplying section 12 is foamed. It is sent to the agent aqueous solution pressure controller 20. Then, it is set and adjusted in the range of 1 to 5 kgf / cm 2 based on the flow rate of the foaming agent aqueous solution calculated from the desired discharge amount of bubbles. Outside this range, it becomes difficult to control the flow rate by pressure detection, which is not preferable.
【００２３】また、このとき、圧搾空気と起泡剤水溶液
の圧力の絶対値の差は、気泡の単位容積質量に応じて
０．１〜０．５ｋｇｆ／ｃｍ2 の範囲で起泡剤水溶液の
圧力の方が高くなるように調節する気泡の品質を安定さ
せ良質のものを得る上で必要である。０．１〜０．５ｋ
ｇｆ／ｃｍ2 の範囲を外れ、例えば差圧が０．１未満の
場合、気泡が大粒になり単位容積質量が小さくなり過ぎ
る可能性が高くなり、逆に、０．５ｋｇｆ／ｃｍ2 を越
えると充分発泡しないため単位容積質量が大き過ぎる可
能性が高くなるとともに該単位容積質量の変動巾も大き
くなるので好ましくない。At this time, the difference between the absolute values of the pressures of the compressed air and the aqueous foaming agent solution is in the range of 0.1 to 0.5 kgf / cm 2 depending on the unit volume mass of the bubbles. It is necessary to stabilize the quality of the bubbles that are adjusted so that the pressure is higher and to obtain high quality. 0.1-0.5k
When the pressure deviates from the range of gf / cm 2 , and the differential pressure is less than 0.1, for example, there is a high possibility that the bubbles become large and the unit volume mass becomes too small, and conversely, when it exceeds 0.5 kgf / cm 2. Since it does not sufficiently foam, there is a high possibility that the unit volume mass is too large, and the fluctuation range of the unit volume mass also becomes large, which is not preferable.
【００２４】その後、起泡剤水溶液は起泡剤水溶液流量
調節器２２を通り、ここで流量の確認が行なわれ、気泡
形成部２４へ送られる。ここで、好ましい起泡剤水溶液
の所定量は２〜２０Ｌ／分の範囲である。上記、気泡形
成部２４に入る圧搾空気と起泡剤水溶液の各所定量は所
望の吐出量から算出された各流量値に基づき、前記各流
量調節器でされる。以上、設定する際の目安を示したも
のが例えば図４の表である。次に実施例に基づき、本発
明の効果を具体的に示す。Thereafter, the foaming agent aqueous solution passes through the foaming agent aqueous solution flow rate controller 22, where the flow rate is confirmed and sent to the bubble forming section 24. Here, the predetermined amount of the preferred aqueous foaming agent solution is in the range of 2 to 20 L / min. The respective predetermined amounts of the compressed air and the foaming agent aqueous solution entering the bubble forming unit 24 are controlled by the respective flow rate regulators based on the respective flow rate values calculated from the desired discharge amounts. The table shown in FIG. 4, for example, shows the standard for setting. Next, the effects of the present invention will be specifically described based on Examples.
【００２５】[0025]
（１）気泡発生装置 図１に示す形態の気泡発生装置を試作し実施した。圧搾
空気供給部１０として日立社製コンプレッサー（ＢＥＢ
Ｉ−ＣＯＮ−３．７Ｕ−９．５Ｖ型）を用いた圧搾空気
の圧力は７．２ｋｇｆ／ｃｍ2 とした。起泡剤水溶液供
給部１２として１００リットルの鋼製タンクを用いた。
気泡形成部２４は図３に示すように円筒状の鋼管（内径
４０ｍｍφ）の中にスチールウール碍子（大：８ｍｍ
φ，小：３．６ｍｍφ）を入れたものである。圧搾空気
圧力調節器（Ｂ）１６、起泡剤水溶液圧力調節器２０は
いずれもコガネイ社のものを用いた。圧搾空気流量調節
器１８、起泡剤水溶液流量調節器２２は各々日本特殊計
器製作所社製である。また、圧搾空気圧力調節器（Ａ）
１４はヨシタケ社のものである。(1) Bubble Generator A prototype of the bubble generator having the form shown in FIG. 1 was implemented. As a compressed air supply unit 10, a Hitachi compressor (BEB
The pressure of the compressed air using I-CON-3.7U-9.5V type) was set to 7.2 kgf / cm 2 . A 100-liter steel tank was used as the foaming agent aqueous solution supply unit 12.
As shown in FIG. 3, the bubble forming part 24 is a steel wool insulator (large: 8 mm) in a cylindrical steel pipe (inner diameter 40 mmφ).
φ, small: 3.6 mmφ). As the compressed air pressure controller (B) 16 and the foaming agent aqueous solution pressure controller 20, those manufactured by Koganei Co., Ltd. were used. The compressed air flow rate controller 18 and the foaming agent aqueous solution flow rate controller 22 are each manufactured by Nippon Special Keiki Seisakusho. Also, compressed air pressure regulator (A)
14 is from Yoshitake.
【００２６】（２）起泡剤水溶液 起泡剤は動物質蛋白質系起泡剤プロフォーム（西田商会
製）を７重量％に希釈したものを使用した。(2) Foaming Agent Aqueous Solution The foaming agent used was a protein protein type foaming agent Proform (manufactured by Nishida Shokai) diluted to 7% by weight.
【００２７】（３）気泡の製造 気泡の目標単位容積質量を０．０４５ｋｇ／Ｌ、目標吐
出量を２００Ｌ／分となるように以下の手順で調節し
た。 圧搾空気圧力調節器（Ａ）１４により圧搾空気の圧力
を７．２ｋｇｆ／ｃｍ2 から５．３ｋｇｆ／ｃｍ2 に減
圧した。 圧搾空気の流量を圧搾空気流量調節器１８により１９
１Ｌ／分になるように調節した。 起泡剤水溶液の流量を起泡剤水溶液流量調節器２２に
より９．０Ｌ／分になるように調節した。 圧搾空気の圧力を圧搾空気圧力調節器（Ｂ）１６によ
り手動で４．０ｋｇｆ／ｃｍ2 になるように調節し、そ
の時の流量を流量計により確認した。流量は１９０．５
Ｌ／分であった。 起泡剤水溶液の圧力を起泡剤水溶液圧力調節器２０に
より手動で４．２ｋｇｆ／ｃｍ2 になるように調節し、
圧力差が０．２ｋｇｆ／ｃｍ2 になるようにし、その時
の流量を流量計により確認した。流量は９．２Ｌ／分で
あった。 なお、，において圧力が設定からずれた場合は目視
により手動で適宜調節した。比較として図２に示す従来
の気泡発生装置を用い、同様の目標設定で気泡を製造し
た。この場合、上記〜の操作を行なった。(3) Production of bubbles The target unit volume mass of bubbles was adjusted to 0.045 kg / L and the target discharge rate was adjusted to 200 L / min by the following procedure. The compressed air pressure controller (A) 14 reduced the compressed air pressure from 7.2 kgf / cm 2 to 5.3 kgf / cm 2 . The compressed air flow rate is adjusted to 19 by the compressed air flow rate controller 18.
It was adjusted to be 1 L / min. The flow rate of the aqueous foaming agent solution was adjusted to 9.0 L / min by the foaming agent aqueous solution flow controller 22. The pressure of the compressed air was manually adjusted to 4.0 kgf / cm 2 by the compressed air pressure controller (B) 16, and the flow rate at that time was confirmed by a flow meter. Flow rate is 190.5
L / min. The pressure of the aqueous foaming agent solution is manually adjusted to 4.2 kgf / cm 2 by the foaming agent aqueous solution pressure controller 20,
The pressure difference was set to 0.2 kgf / cm 2 , and the flow rate at that time was confirmed by a flow meter. The flow rate was 9.2 L / min. In addition, when the pressure deviates from the setting in step (3), it is manually and appropriately adjusted visually. For comparison, the conventional bubble generator shown in FIG. 2 was used to produce bubbles with similar target settings. In this case, the operations 1 to 3 were performed.
【００２８】（４）単位容積質量の測定 一般的なコンクリートの単位容積質量に用いられている
単重升（容量２Ｌ）を用い、製造された気泡を気泡形成
部分先端からの吐出開始から１５秒間隔で３０回サンプ
リングし測定した。結果を図５，図６に示す。図５，図
６の結果からわかるように、本発明の装置と制御法によ
る気泡の制御を行なえば、従来に比べより安定した単位
容積質量を有する気泡が得られる。(4) Measurement of Unit Volume Mass Using a single cell (volume of 2 L) used for general unit volume mass of concrete, the produced bubbles are discharged for 15 seconds from the start of the bubble formation portion tip. The measurement was performed by sampling 30 times at intervals. The results are shown in FIGS. As can be seen from the results of FIGS. 5 and 6, when the bubbles are controlled by the device and the control method of the present invention, bubbles having a more stable unit volume mass than the conventional one can be obtained.
【００２９】[0029]
【発明の効果】本発明によれば単位容積質量の安定した
品質のよい気泡が製造できるので、比重や強度などが安
定した品質のよい気泡コンクリートが得られる。EFFECTS OF THE INVENTION According to the present invention, since it is possible to produce stable and high-quality bubbles having a unit volume mass, it is possible to obtain high-quality aerated concrete with stable specific gravity and strength.
【図１】本発明による気泡コンクリート製造用気泡発生
装置の実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of a bubble generating apparatus for producing aerated concrete according to the present invention.
【図２】従来技術における気泡コンクリート製造用気泡
発生装置の構成図である。FIG. 2 is a configuration diagram of a bubble generating apparatus for producing aerated concrete according to a conventional technique.
【図３】気泡を発生する気泡形成部の構造例を示す断面
図である。FIG. 3 is a cross-sectional view showing a structural example of a bubble forming portion that generates bubbles.
【図４】本実施例の気泡コンクリート製造用気泡発生装
置における気泡の吐出量と流量および圧力の関係を示す
説明図である。FIG. 4 is an explanatory diagram showing a relationship among a discharge amount of bubbles, a flow rate, and a pressure in the bubble generating apparatus for producing aerated concrete according to the present embodiment.
【図５】本実施例の気泡コンクリート製造用気泡発生装
置を用いたときのサンプリング例を示すグラフである。FIG. 5 is a graph showing an example of sampling when the bubble generating apparatus for producing aerated concrete of this example is used.
【図６】従来技術の気泡コンクリート製造用気泡発生装
置を用いたときのサンプリング例を示すグラフである。FIG. 6 is a graph showing an example of sampling when a conventional bubble generating apparatus for producing aerated concrete is used.
【図７】本発明による気泡コンクリート製造用気泡発生
装置の他の実施例を示す構成図である。FIG. 7 is a schematic view showing another embodiment of the bubble generating apparatus for producing aerated concrete according to the present invention.
１０ 圧搾空気供給部 １２ 起泡剤水溶液供給部 １４ 圧搾空気圧力調節器（Ａ） １６ 圧搾空気圧力調節器（Ｂ） １８ 圧搾空気流量調節器 ２０ 起泡剤水溶液圧力調節器 ２２ 起泡剤水溶液流量調節器 ２４ 気泡形成部 10 Compressed Air Supply Section 12 Foaming Agent Aqueous Solution Supply Section 14 Compressed Air Pressure Regulator (A) 16 Compressed Air Pressure Regulator (B) 18 Compressed Air Flow Rate Controller 20 Foaming Agent Aqueous Pressure Controller 22 Foaming Agent Aqueous Solution Flow Rate Regulator 24 Bubble formation part
Claims (2)
（Ａ）、起泡剤水溶液供給部、圧搾空気と起泡剤水溶液
とが混合し気泡を形成する気泡形成部、気泡形成部へ供
給する圧搾空気と起泡剤水溶液の各流量を制御する流量
調節器などからなる気泡コンクリート製造用気泡発生装
置において、圧搾空気圧力調節器（Ａ）と気泡形成部と
の間に圧搾空気圧力調節器（Ｂ）を、起泡剤水溶液供給
部と気泡形成部との間に起泡剤水溶液圧力調節器を各々
有することを特徴とする気泡コンクリート製造用気泡発
生装置。1. A compressed air supply unit, a compressed air pressure controller (A), a foaming agent aqueous solution supply unit, a bubble forming unit for mixing compressed air and a foaming agent aqueous solution to form bubbles, and a supply to a bubble forming unit. In a bubble generating apparatus for producing aerated concrete, comprising a flow rate controller for controlling the flow rate of compressed air and a flow rate of a foaming agent aqueous solution, a compressed air pressure controller between a compressed air pressure controller (A) and a bubble forming part. (B) An air bubble generating apparatus for producing aerated concrete, wherein each of the air bubble generator aqueous solution supply units and the air bubble forming unit has a foaming agent aqueous solution pressure regulator.
用気泡発生装置による気泡の製造において、気泡形成部
前段の圧搾空気の圧力を圧搾空気圧力調節器（Ｂ）によ
り１．０−５．０ｋｇｆ／ｃｍ2 に、起泡剤水溶液の圧
力を起泡剤水溶液圧力調節器により１．０−５．０ｋｇ
ｆ／ｃｍ2 に各々調整するとともに、さらに、起泡剤水
溶液の該圧力を圧搾空気の該圧力より０．１−０．５ｋ
ｇｆ／ｃｍ2 高くなるように調整して制御することを特
徴とする気泡の単位容積質量の変動の制御方法。2. In the production of bubbles by the bubble generating apparatus for producing aerated concrete according to claim 1, the pressure of the compressed air in the former stage of the bubble forming section is controlled to 1.0-5.0 kgf by a compressed air pressure controller (B). / Cm 2 , the pressure of the foaming agent aqueous solution is 1.0-5.0 kg by the foaming agent aqueous solution pressure controller.
The pressure of the foaming agent aqueous solution is adjusted to 0.1-0.5 k from the pressure of the compressed air, while adjusting each to f / cm 2.
A method for controlling fluctuation of unit volume mass of bubbles, which is controlled by adjusting so as to increase gf / cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16011895A JP3785203B2 (en) | 1995-06-05 | 1995-06-05 | Bubble generator for producing cellular concrete and method for controlling fluctuation of unit volume mass of bubbles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16011895A JP3785203B2 (en) | 1995-06-05 | 1995-06-05 | Bubble generator for producing cellular concrete and method for controlling fluctuation of unit volume mass of bubbles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08333181A true JPH08333181A (en) | 1996-12-17 |
| JP3785203B2 JP3785203B2 (en) | 2006-06-14 |
Family
ID=15708259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16011895A Expired - Fee Related JP3785203B2 (en) | 1995-06-05 | 1995-06-05 | Bubble generator for producing cellular concrete and method for controlling fluctuation of unit volume mass of bubbles |
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| Country | Link |
|---|---|
| JP (1) | JP3785203B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212480A (en) * | 1997-01-30 | 1998-08-11 | Tokai Rubber Ind Ltd | Stabilization of natural ground and device used therefor |
| KR100498842B1 (en) * | 2002-07-22 | 2005-07-04 | 한국건설기술연구원 | Manufacturing apparatus for air-entrained concrete slurry having foaming machine |
-
1995
- 1995-06-05 JP JP16011895A patent/JP3785203B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212480A (en) * | 1997-01-30 | 1998-08-11 | Tokai Rubber Ind Ltd | Stabilization of natural ground and device used therefor |
| KR100498842B1 (en) * | 2002-07-22 | 2005-07-04 | 한국건설기술연구원 | Manufacturing apparatus for air-entrained concrete slurry having foaming machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3785203B2 (en) | 2006-06-14 |
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