JPS5939169B2 - Thickener dissolution method and device - Google Patents
Thickener dissolution method and deviceInfo
- Publication number
- JPS5939169B2 JPS5939169B2 JP10633482A JP10633482A JPS5939169B2 JP S5939169 B2 JPS5939169 B2 JP S5939169B2 JP 10633482 A JP10633482 A JP 10633482A JP 10633482 A JP10633482 A JP 10633482A JP S5939169 B2 JPS5939169 B2 JP S5939169B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- thickener
- stirring tank
- added
- stirring
- 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.)
- Expired
Links
Landscapes
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Description
【発明の詳細な説明】
この考案は主に杭内等のコンクリート吹付け作業時に使
用する粉塵抑制用の増粘剤の溶解方法及びその装置に関
する。DETAILED DESCRIPTION OF THE INVENTION This invention relates primarily to a method for dissolving a thickener for dust suppression used during concrete spraying work in piles, etc., and an apparatus therefor.
一般にコンクリート吹付工法(NATM)による施工に
おいては、杭内作業の環境衛生管理の一環として吹付け
コンクリートの吹付け時に発生する粉塵が問題視されて
いる。In general, in construction using the concrete shotcrete method (NATM), dust generated during the spraying of shotcrete is viewed as a problem as part of environmental hygiene management for work inside piles.
特に近年多用されている乾式、セミ湿式コンクリート吹
付工法では、吹付機本体にてドライミックスしたコンク
リート材料(セメント、砂、粗骨材等の混合物)を圧縮
空気により移送管を介してエアー搬送し、同時にその移
送管の先端ノズル附近に設けた注水孔より該管内に圧力
注水を行つて、ドライミックス状のコンクリート材料を
短時間内で生コンクリート化しながら該先端ノズルより
噴射して吹付けることから、湿式工法に比し吹付け時の
浮塵発生量が多く作業環境が非常に悪くなる。またその
コンクリート吹付け時に生コンクリートのリパウンドに
よる損失も見逃せない問題であつた。そこで最近では粉
塵抑御とリパウンド減少に効果的な増粘剤を添加するこ
とが考えられて来た。ここでその増粘剤としては通称水
溶性ポリマーと云われるエチレンオキサイドを重合させ
て得られる分子量数10万〜数100万の白色粉末ない
し顆粒状の水溶性熱可装性樹脂(PEO)やメチルセル
ロースを主成分とす白色粉状の水溶性熱可塑性樹脂(シ
リポン)などが知られており、これらの増粘剤は水に完
全に溶解し、その溶流は低濃度で高い粘性を示すと共に
凝集作用を有し、セメントに対し重量比で0.05%程
度の量の増粘剤を水に溶解して添加すると効果的である
が、しかし氷に対する溶解にはかなりの時間を要し、こ
のためにドライミックス状のコンクリート材料に増粘剤
を粉末状態のまま添加して移送管に圧送し、先端ノズル
部で加水して吹付けを行うよりも、増粘剤を予め別途タ
ンクにて水に完全溶解させておいて、その水溶液を移送
管先端ノズル部でドライミックス状のコンクリート材料
に添加することの方がはるかに効果的である。Particularly in the dry and semi-wet concrete spraying methods that have been widely used in recent years, the concrete material (mixture of cement, sand, coarse aggregate, etc.) that has been dry mixed in the spraying machine is air-transported through a transfer pipe using compressed air. At the same time, pressure water is injected into the pipe from a water injection hole provided near the nozzle at the tip of the transfer pipe, and the concrete material in the form of a dry mix is turned into ready-mixed concrete within a short time while being sprayed from the nozzle at the tip. Compared to the wet method, a large amount of floating dust is generated during spraying, resulting in a very poor working environment. In addition, loss due to rebound of fresh concrete during concrete spraying was a problem that could not be overlooked. Therefore, recently, consideration has been given to adding thickeners that are effective in suppressing dust and reducing rebound. Here, the thickener is a white powder or granular water-soluble thermoplastic resin (PEO) with a molecular weight of 100,000 to several million obtained by polymerizing ethylene oxide, commonly known as a water-soluble polymer, or methyl cellulose. White powdery water-soluble thermoplastic resins (Siripon) are known as main ingredients, and these thickeners completely dissolve in water, and their solution shows high viscosity at low concentrations and does not coagulate. It is effective to add a thickener in an amount of about 0.05% by weight of cement dissolved in water, but it takes a considerable amount of time to dissolve in ice, and this Therefore, rather than adding a thickener in powder form to a dry mix concrete material, pumping it into a transfer pipe, adding water at the tip nozzle, and spraying, the thickener is added in advance to a separate tank with water. It is far more effective to completely dissolve the aqueous solution into the concrete material in the form of a dry mix using the nozzle at the tip of the transfer pipe.
しかしながら、従来では抗道内等のコンクリート吹付け
現場で吹付機本体に対し付随的に設置し得て粉末状の増
粘剤を水に溶解しながらその水溶液を吹付機移送管先端
ノズル部附近でコンクリート材に供給添加できるような
装置は全く無く、実1験的に工場で予め溶解した増粘剤
の水溶液を添加して見た程度のことしか行なわれていな
い。However, in the past, a powder thickener was dissolved in water and the aqueous solution was applied to the concrete near the nozzle at the tip of the spraying machine's transfer pipe, which could be installed incidentally to the main body of the spraying machine at a concrete spraying site such as on a highway. There is no equipment that can supply and add thickeners to materials, and the only thing that has been done is to add a pre-dissolved aqueous solution of a thickener in a factory.
つまりは上述した増粘剤は元来完全水溶性であるにもか
かわらず、完全溶解するまでにはかなりの時間を要すと
共に、その溶解手段が適切でないと溶解自体が困難であ
る上に、水溶液の粘度低下を招くなどの各種面倒な問題
が多いのであり、例えば増粘剤の粉末の水中への分散が
不充分でフロツクができると該フロツク内の空気が逃げ
ずに安定な疎水性帯(ママコ)ができて溶解が非常に困
難となり、又その増粘剤粒子を水に均一に分散してもそ
の時の混合力(撹拌)が強過ぎると増粘剤分子の切断を
おこして粘度低下を招き、逆に弱過ぎると卵白状となつ
て分子の剥離分散がスムーズに進行せず、粘度不均一を
招き且つ溶解時間を長く必要とするなどの問題が生じる
。この為に抗道内等のコンクリート吹付現場に設置可能
なコンパクトな装置で且つ短時間のうちに適切な溶解が
できるものはいまだ開発されておらず、その早期実現が
望まれているのが現状であつた。この発明は上記事情に
鑑みなされたもので、その目的とする処は、上述した増
粘剤を水に対して非常に簡単且つ適切にしかも短時間で
溶解させることができて、抗道内等のコンクリート吹付
け現場での利用に非常に有効となる増粘剤の溶解方法及
びその装置を提供することにある。In other words, although the above-mentioned thickeners are originally completely water-soluble, it takes a considerable amount of time to completely dissolve them, and it is difficult to dissolve them if the dissolving means is not appropriate. There are many troublesome problems such as a decrease in the viscosity of the aqueous solution.For example, if thickener powder is not sufficiently dispersed in water and flocs form, the air in the flocs will not escape and form a stable hydrophobic band. (Mamako) is formed, making it extremely difficult to dissolve.Also, even if the thickener particles are uniformly dispersed in water, if the mixing force (stirring) is too strong, the thickener molecules will be cut and the viscosity will decrease. On the other hand, if it is too weak, it will become albumen-like and the exfoliation and dispersion of molecules will not proceed smoothly, causing problems such as non-uniform viscosity and requiring a long dissolution time. For this reason, a compact device that can be installed at concrete spraying sites such as in roads and that can perform appropriate melting in a short period of time has not yet been developed, and it is currently hoped that it will be realized as soon as possible. It was hot. This invention was made in view of the above circumstances, and its purpose is to dissolve the above-mentioned thickener in water very easily and appropriately, and in a short period of time. It is an object of the present invention to provide a method for dissolving a thickener and an apparatus therefor which are very effective for use at concrete spraying sites.
つまりこの発明は攪拌タンク内に入れた水に撹拌機の高
速回転により渦流を生じせしめ、その状態で粉状又は顆
粒状の水溶性熱可塑性樹脂からなる増粘剤を少量づつ投
入して水中に十分に分散させ、しかしてその増粘剤の所
定量の投入分散終了後に上記攪拌機の回転を低速にして
該増粘剤分子構造に悪影響(粘度低下)を与えずに撹拌
することで、短時間で高能率的に適切な溶解が図れるよ
うになる方法及び装置を特徴とするものである。In other words, this invention creates a vortex in water placed in a stirring tank by rotating the stirrer at high speed, and in this state, a thickener made of a water-soluble thermoplastic resin in the form of powder or granules is added little by little into the water. By fully dispersing the thickener, and after adding and dispersing a predetermined amount of the thickener, the agitator is rotated at a low speed and stirred without adversely affecting the molecular structure of the thickener (viscosity reduction). The present invention is characterized by a method and apparatus that can achieve appropriate dissolution with high efficiency.
以下この発明の一実施例を図面に従い説明する。先ず説
明の便宜上この発明の装置から述べると、この装置は増
粘剤の自動溶解並びにその水溶液の貯蔵及びコンクリー
ト吹付機への自動供給機能をも備えたもので、第1図中
1は攪拌タンク、2は撹拌タンク1と隣接して同一ベー
ス(図示せず)上に設けられた貯蔵タンクである。3は
上記撹拌タンク1内に適宜貯水タンク(図示せず)等か
らの水を給水する電磁弁等のウオータバルブ3a付き給
水管機構、4は上記撹拌タンク1内にその上方から粉末
又は顆粒状の水溶性熱可塑性樹脂からなる増粘剤を少量
づつ投入するプリセットカウンター付きフイーダ等の増
粘剤定量供給機構、5は撹拌タンク1内中央に回転羽根
付きシヤフトを差し込む如くして設置された攪拌機(ア
ジテータ)で、図示しないタイマー制御で回転数が高、
低2段に切換えられる可変速形のものである。An embodiment of the present invention will be described below with reference to the drawings. First, for the sake of explanation, the device of this invention is equipped with the functions of automatically dissolving a thickener, storing the aqueous solution, and automatically supplying it to a concrete spraying machine, and 1 in Fig. 1 is a stirring tank. , 2 is a storage tank provided adjacent to the stirring tank 1 on the same base (not shown). 3 is a water supply pipe mechanism with a water valve 3a such as an electromagnetic valve for supplying water from a water storage tank (not shown) etc. into the stirring tank 1 as appropriate; 4 is a water supply pipe mechanism with a water valve 3a such as a solenoid valve for supplying water from above into the stirring tank 1 from above; A thickener quantitative supply mechanism such as a feeder with a preset counter that gradually introduces a thickener made of a water-soluble thermoplastic resin, and 5 is a stirrer installed by inserting a shaft with rotating blades into the center of the stirring tank 1. (agitator), the rotation speed is high by timer control (not shown).
It is a variable speed type that can be switched to two low gears.
又図中6は攪拌タンク1内に該タンクを内外に相離間し
た2重壁構造となす如く設けたカゴ形状のストレーナ一
で、このストレーナ一6は底面及び周面に細目の金網を
張つた構成であつて、上部フレームが攪拌タンク1に対
して緩衝ゴム等の弾性支持体7・・・により適当範囲で
遊動可能に支持されていると共に、その上部に配するバ
イブレータ8により振動せしめられるようになつている
。9は上記攪拌タンク1内の水溶液をその底部より吸い
上げて貯蔵タンク2内に移し入れる揚水ポンプ9a付き
揚水管機構である。6 in the figure is a cage-shaped strainer 1 installed in the stirring tank 1 so as to have a double-walled structure separating the inside and outside of the tank. In this structure, the upper frame is supported by an elastic support member 7 such as a buffer rubber so as to be freely movable within an appropriate range with respect to the stirring tank 1, and is vibrated by a vibrator 8 disposed on the upper part of the upper frame. It's getting old. Reference numeral 9 denotes a water pump mechanism with a water pump 9a that sucks up the aqueous solution in the stirring tank 1 from the bottom thereof and transfers it into the storage tank 2.
なお、上記攪拌タンク1の側壁にはその上端寄り部に液
面検知用の上限レベルセンサーLSlと下端寄り部に下
限レベルセンサーLS2が取付けられている。これらレ
ベルセンサーLSl,LS2は市販のニボコンパクトと
称される電磁リレー式のスイツチであつて、誘電性をも
つ液体がタンク1内方に突出するプローブを覆うと検知
動作し、該液体が離れると解磁されるものであり、これ
らレベルセンサーLSl,LS2は上記給水機構3の給
水管3aから落流する水に直接当らないように該給水管
3aの口の真下から横にずれた位置にそれぞれ配設され
ていると共に、これらレベルセンサーLSl,LS2の
真上にはそのプローブに向けてノズルからジニットエア
ーを吹付けて附着物の除去を行うエアーバルブ10a付
きエアー吹付機構10が設けられて、該レベルセンサー
LSl,LS2の誤動作を防止するようになつている。
又上記貯蔵タンク2の側壁にも上記同様のレベルセンサ
ーLS3が下端方寄り部に位置して設けられている。又
その貯蔵タンク2内の水溶液をコンクリート吹付機の移
送管先端ノズル部(図示せず)に送り出す圧送ポンプ1
1a付き供給管機構11が連結されている。なお、この
供給管機構11はコンクリート吹付機の動作に連動して
圧送ポンプ11aが作動し、コンクリート吹付け終了時
は水溶液の圧送を停止して、余分の水溶液を復水バルブ
11bによりタンク2内に戻せるようになつている。又
上記各種機器、機構はレベルセンサーLSl,LS2,
LS3の検知信号等を入力信号として取り入れて動作す
る制御回路(図示せず)により第2図のタイムチヤート
に示すように自動制御されるようになつている。而して
上述した構成の装置を用いて増粘剤の溶解及びその貯蔵
供給方法を述べると、先ず、第1図では図示しないが、
メインスイツチ(押ボタンスイツチ)を0Nする。Incidentally, on the side wall of the stirring tank 1, an upper limit level sensor LSl for detecting the liquid level is attached near the upper end, and a lower limit level sensor LS2 is attached to the lower end. These level sensors LS1 and LS2 are commercially available electromagnetic relay type switches called Nibocompact, and they operate to detect when a dielectric liquid covers the probe protruding into the tank 1, and the liquid separates. These level sensors LS1 and LS2 are placed at a position laterally shifted from directly below the mouth of the water supply pipe 3a of the water supply mechanism 3 so as not to directly hit the water falling from the water supply pipe 3a. In addition, an air blowing mechanism 10 with an air valve 10a is provided directly above the level sensors LSl and LS2 to blow dinit air from a nozzle toward the probes to remove adhering matter. This prevents the level sensors LS1 and LS2 from malfunctioning.
A level sensor LS3 similar to the above is also provided on the side wall of the storage tank 2, located near the lower end. A pressure pump 1 sends the aqueous solution in the storage tank 2 to a nozzle at the tip of a transfer pipe (not shown) of a concrete spraying machine.
A supply pipe mechanism 11 with 1a is connected. In addition, in this supply pipe mechanism 11, a pressure pump 11a operates in conjunction with the operation of the concrete spraying machine, and when concrete spraying is finished, pressure feeding of the aqueous solution is stopped, and excess aqueous solution is drained into the tank 2 by a condensation valve 11b. It is now possible to return to In addition, the various devices and mechanisms mentioned above include level sensors LSL, LS2,
Automatic control is performed as shown in the time chart of FIG. 2 by a control circuit (not shown) that operates by taking in the detection signal of LS3 as an input signal. To describe the method for dissolving the thickener and storing and supplying it using the apparatus with the above-mentioned configuration, first, although not shown in FIG.
Turn the main switch (push button switch) to 0N.
これにてレベルセンサーLSl,LS2により攪拌タン
ク1内に水が所定量無いことを確認して供給機構3のウ
オーターバルブ3aが開き、これにて給水が始まる。し
かして、撹拌タンク1内に所定量(本実施例では100
リツタ一)の水が入れられることで上限レベルセンター
LSlが動作すると上記ウオーターバルブ3aが自動的
に閉じられて給水が停止し、これと同時に攪拌機5とス
トレーナ一6のバイブレータ8が始動する。なおその撹
拌機5は高速回転(攪拌羽根の周速度にして約11m/
Sec)してタンク1内の水に渦流を生じせしめ、バイ
ブレータ8はストレーナ一6全体を適度に振動させる。
一方上記攪拌機5の始動からT,秒後(タンク1内の水
が渦流を起こすまでの約2秒間後)にタイマー或いは遅
延回路等により増粘剤定量供給機構4のフイーダ一が渦
流状態の水面上方から増粘剤の少量づつの投入作動を開
始し、同時にりセツト状態であつたプリセツトカウンタ
一がカウント動作を行う。こうして少量づつ投下される
増粘剤を渦流によつて水面下深く吸込ませる如く水没さ
せながら効率よく水中に分散して行き、プリセツトカウ
ンタ一が予め設定されたカウント値に達したら(水に対
して重量比で0.1%程度の増粘剤が投入されたら)フ
イーダ一による増粘剤の投入が停止し、その時点からタ
イマー等によりT2秒後に(定量の増粘剤が水中に没し
て十分に分散するまでの約3秒間後に)上記攪拌機4の
回転数が低速に自動切換えられて撹拌羽根の周速度にし
て1m/Se暇度に下げ、そのままタイマーにより予め
設定した時間T(約90秒間)撹拌作用を続ける。これ
にて増粘剤の投入分散が行われる初期段階の短時間は高
速撹拌をするがそれ以降は低速攪拌に切換えることで、
水中に分散している増粉剤の粉体分子を切断することな
く、つまり粘度低下を招くことなく短時間のうちにスム
ーズに且つ均一に溶解して行くようになす。これにて攪
拌タンク1内に投入された増粘剤は疎水性帯(ママコ)
の発生や粘度不均一を招く卵白状(糊状)となることが
非常に少なくなり、水中に粘度低下をきたすことなく均
一に分散、溶解するようになる。又上述した撹拌作動中
にタンク1内のカゴ形ストレーナ一6がバイブレータ8
により加振されて振動を続けることで、そのストレーナ
一6に附着した疎水性帯(ママコ)や糊状となつたもの
を分散、F過して、増粘剤の水に対する分散、溶解をよ
り一層増長せしめるようになす。こうして上記タイマー
の設定時間になると上記攪拌機5とバイブレータ8と力
椙動停止して増粘剤の溶解作業が終了する。The level sensors LS1 and LS2 confirm that there is no predetermined amount of water in the stirring tank 1, and the water valve 3a of the supply mechanism 3 opens, thereby starting water supply. Therefore, a predetermined amount (100 in this example) is added to the stirring tank 1.
When the upper limit level center LS1 is activated by adding water to the liter (1), the water valve 3a is automatically closed and the water supply is stopped, and at the same time, the agitator 5 and the vibrator 8 of the strainer 16 are started. The stirrer 5 rotates at high speed (approximately 11 m/cm in circumferential speed of the stirring blade).
Sec) to generate a vortex in the water in the tank 1, and the vibrator 8 appropriately vibrates the entire strainer 16.
On the other hand, T seconds after the start of the agitator 5 (approximately 2 seconds after the water in the tank 1 generates a vortex), a timer or a delay circuit causes the feeder 1 of the thickener constant supply mechanism 4 to adjust the water surface to the vortex state. The thickener is started to be added in small amounts from above, and at the same time the preset counter, which was in the reset state, starts counting. In this way, the thickener dropped in small amounts is efficiently dispersed in the water while being sucked deep below the water surface by the eddy current, and when the preset counter reaches the preset count value ( When approximately 0.1% of thickener by weight is added to the feeder, the feeder stops adding the thickener, and from that point on, a timer etc. is set to start T2 seconds later (when a certain amount of thickener is submerged in the water). (After approximately 3 seconds until sufficient dispersion), the rotational speed of the stirrer 4 is automatically switched to a low speed, the peripheral speed of the stirring blade is reduced to 1 m/Se, and then the timer is set in advance for a time T (approximately 90 seconds) Continue stirring. In this way, high-speed stirring is performed for a short period of time during the initial stage when the thickener is introduced and dispersed, but after that, switching to low-speed stirring is performed.
To smoothly and uniformly dissolve a powder thickener in a short time without cutting the powder molecules of a powder thickening agent dispersed in water, that is, without causing a decrease in viscosity. The thickener added into the stirring tank 1 is now in the hydrophobic zone (Mamaco).
This greatly reduces the occurrence of albumen-like (glue-like) formation that causes viscosity non-uniformity, and it becomes possible to uniformly disperse and dissolve in water without causing a decrease in viscosity. Also, during the stirring operation described above, the cage-shaped strainer 16 in the tank 1 is activated by the vibrator 8.
By continuing to vibrate and vibrate, the hydrophobic band (mamako) and glue-like substances attached to the strainer 16 are dispersed and passed through, thereby further dispersing and dissolving the thickener in water. Let it grow further. In this way, when the set time of the timer comes, the stirring machine 5 and the vibrator 8 stop stirring, and the work of dissolving the thickener is completed.
ここで貯蔵タンク2内の水溶液が所定量に不足している
ことがレベルセンサーLS3の検知により確認されてい
る場合は、揚水管機構9の揚水ポンプ9aが作動して、
攪拌タンク1内の増粘剤水溶液をストレーナ一6底部よ
り下側から吸込んで貯蔵タンク2内に移し入れる。これ
にて貯蔵タンク1内の水溶液の水位が下がつてレベルセ
ンサーLSl,LS2両者の液面検知により該タンク1
内の水溶液の残りが所定以下になつたことの確認信号に
より揚水ポンプ9aが停止する。なお、上記揚水ポンプ
9aの作動中はこれと同期してエアー吹付機構10のエ
アーバルブ10aが開いてジニットエアーを噴射し、タ
ンク1内の水位が下がつて行くにもかかわらずレベルセ
ンサ一LSl,LS2のプロープに附着したまま残こつ
て該センサーLS,,LS2の誤動作を引き起こす疎水
性帯(ママコ)や糊状となつたものを上記ジニットエア
ーで吹き飛ばして除去し、これにてレベルセンサーLS
l,LS2がタンク1内の水位通りの誤りのない検知動
作を行い得るようになす。以上で貯蔵タンク2内に入れ
られた増粘剤の水溶液はコンクリート吹付機の作動と連
動して動作する供給管機構11の圧送ポンプ11aによ
り吸引されて該コンクリート吹付機の移送管先端の吹付
けノズル部附近でドライミツクス状のコンクリート材料
に添加して、コンクリート吹付けによる粉塵発生及びリ
バウンドを減少するのに使用する。If the level sensor LS3 confirms that the aqueous solution in the storage tank 2 is insufficient to a predetermined amount, the lift pump 9a of the lift pipe mechanism 9 is activated.
The aqueous thickener solution in the stirring tank 1 is sucked in from below the bottom of the strainer 16 and transferred into the storage tank 2. As a result, the water level of the aqueous solution in the storage tank 1 decreases, and the liquid level is detected by both level sensors LS1 and LS2.
The water pump 9a is stopped by a confirmation signal that the remaining amount of the aqueous solution in the tank has become below a predetermined level. Note that while the water pump 9a is in operation, the air valve 10a of the air blowing mechanism 10 opens in synchronization with this and injects GINIT air, and even though the water level in the tank 1 is decreasing, the level sensor 10a is opened. Hydrophobic bands and glue-like substances that remain attached to the probes of LSl and LS2 and cause malfunction of the sensors LS and LS2 are blown away with the above Ginnit Air, and the level sensor LS
1, so that LS2 can perform error-free detection operation according to the water level in tank 1. The thickener aqueous solution placed in the storage tank 2 is sucked by the pressure pump 11a of the supply pipe mechanism 11, which operates in conjunction with the operation of the concrete spraying machine, and is sprayed at the tip of the transfer pipe of the concrete spraying machine. It is added to dry mix concrete near the nozzle to reduce dust generation and rebound caused by concrete spraying.
また、上記攪拌タンク1内の水溶液を貯蔵タンク2に移
した後はプリセツトカウンタ一がリセツトされるときに
前述したと同様に給水管機構3、攪拌機5、バイブレー
タ8、フイーダ一4等が順次作動して上記と全く同様に
して増粘剤の溶解を行い、貯蔵タンク2内の水溶液の残
量が少なくなるまで待機し、しかして連続的に増粘剤水
溶液のコンクリート吹付機への供給が可能となるように
する。この発明は以上詳述した如くなしたから、増粘剤
を非常に簡単且つ適切にしかも短時間で水に対し均一分
散、溶解させることができて、抗道内等第9a
のコンクリート吹付け現場での利用に非常に有効なもの
となる。Further, after the aqueous solution in the stirring tank 1 is transferred to the storage tank 2, the water supply pipe mechanism 3, stirrer 5, vibrator 8, feeder 14, etc. are sequentially operated in the same manner as described above when the preset counter 1 is reset. It operates and dissolves the thickener in exactly the same manner as above, waits until the remaining amount of the aqueous solution in the storage tank 2 becomes small, and then continuously supplies the thickener aqueous solution to the concrete spraying machine. Make it possible. Since this invention has been made as detailed above, it is possible to uniformly disperse and dissolve the thickener in water very easily and appropriately, and in a short period of time, so that it can be used at concrete spraying sites such as inside roads. It is very effective for use.
図面はこの発明の一実施例を示すもので、第1図は装置
の概略的構成図、第2図は同装置のタイムチヤート図で
ある。
1・・・・・・撹拌タンク、2・・・・・・貯蔵タンク
、3・・・・・・給水機構、3a・・・・・・ウオータ
バルブ、4・・・・・・増粘剤定量供給機構(フイーダ
一)、5・・・・・・撹拌機、6・・・・・・ストレー
ナ一、7・・・・・・弾性支持体、8・・・・・・バイ
ブレータ、9・・・・・・揚水機構、9a・・・・・・
揚水ポンプ、10・・・・・・エアー吹付機構、10a
・・・・・・エアーバルブ、11・・・・・・水溶水供
給管機構、11a・・・・・・圧送ポンプ、LSl,L
S2,LS3・・・・・・液面レベルセンサー。The drawings show one embodiment of the present invention; FIG. 1 is a schematic diagram of the configuration of the device, and FIG. 2 is a time chart of the same device. 1... Stirring tank, 2... Storage tank, 3... Water supply mechanism, 3a... Water valve, 4... Thickener Quantitative supply mechanism (feeder 1), 5... Stirrer, 6... Strainer 1, 7... Elastic support, 8... Vibrator, 9. ...Pumping mechanism, 9a...
Lifting pump, 10... Air blowing mechanism, 10a
... Air valve, 11 ... Aqueous water supply pipe mechanism, 11a ... Pressure pump, LSL, L
S2, LS3...Liquid level sensor.
Claims (1)
の高速回転により渦流を生じせしめ、その状態で水面上
から粉状又は顆粒状の水溶性熱可塑性樹脂からなる増粘
剤を少量づつ投入しながら水中に分散させ、しかして増
粘剤の所定量の投入分散終了後に上記攪拌機の回転を低
速にして攪拌を所定時間続けて溶解することを特徴する
増粘剤の溶解方法。 2 攪拌タンクと、この攪拌タンク内に所定量の水を供
給する給水管機構と、攪拌タンク内の水面上から所定量
の粉状又は顆粒状の水溶性熱可塑性樹脂からなる増粘剤
を少量づて投入できる増粘剤定量供給機構と、その増粘
剤の投入時に高速回転して攪拌タンク内の水に渦流を生
じせしめると共に該増粘剤の水中への投入分散終了後に
は低速回転に切換わつて所定時間稼動する可変速攪拌機
とを備えてなる増粘剤の溶解装置。 3 攪拌タンクは内部にバイブレータにより振動可能に
カゴ形状のストレーナーを有することを特徴とする特許
請求の範囲第2項記載の増粘剤の溶解装置。[Claims] 1. A predetermined amount of water is placed in a stirring tank, a vortex is created in the water by high-speed rotation of a stirrer, and in this state, a water-soluble thermoplastic resin in the form of powder or granules is poured from above the water surface. A thickener characterized in that the thickener is dispersed in water while being added little by little, and after a predetermined amount of the thickener has been added and dispersed, the agitator is rotated at a low speed and stirring is continued for a predetermined period of time to dissolve the thickener. How to dissolve. 2. A stirring tank, a water supply pipe mechanism that supplies a predetermined amount of water into the stirring tank, and a small amount of a predetermined amount of a thickener made of a powdered or granular water-soluble thermoplastic resin from above the water surface in the stirring tank. It has a thickening agent quantitative supply mechanism that allows the thickener to be added at once, and when the thickener is added, it rotates at high speed to create a vortex in the water in the stirring tank, and after the thickener has been added and dispersed into the water, it rotates at a low speed. A thickener dissolving device comprising a variable speed stirrer that switches and operates for a predetermined period of time. 3. The thickener dissolving device according to claim 2, wherein the stirring tank has a cage-shaped strainer inside thereof that can be vibrated by a vibrator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10633482A JPS5939169B2 (en) | 1982-06-21 | 1982-06-21 | Thickener dissolution method and device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10633482A JPS5939169B2 (en) | 1982-06-21 | 1982-06-21 | Thickener dissolution method and device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58223428A JPS58223428A (en) | 1983-12-26 |
JPS5939169B2 true JPS5939169B2 (en) | 1984-09-21 |
Family
ID=14430968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10633482A Expired JPS5939169B2 (en) | 1982-06-21 | 1982-06-21 | Thickener dissolution method and device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5939169B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63100921A (en) * | 1986-10-17 | 1988-05-06 | Nippon Mining Co Ltd | Method for dissolving zinc particle |
JP4917283B2 (en) * | 2005-07-15 | 2012-04-18 | 日本曹達株式会社 | Polymer powder dissolution apparatus and method for producing polymer solution |
JP2017170393A (en) * | 2016-03-25 | 2017-09-28 | 株式会社平間理化研究所 | Tank and chemical liquid preparation device |
-
1982
- 1982-06-21 JP JP10633482A patent/JPS5939169B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS58223428A (en) | 1983-12-26 |
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