JP2017082411A - Sol solution manufacturing system - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 50
- 239000000243 solution Substances 0.000 claims abstract description 23
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 12
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000007935 neutral effect Effects 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 6
- 230000001737 promoting effect Effects 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 42
- 239000012530 fluid Substances 0.000 claims description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- 230000002378 acidificating effect Effects 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 abstract description 4
- 238000013019 agitation Methods 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 239000000126 substance Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000011344 liquid material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000013505 freshwater Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
Description
本発明は、物性の異なる流体を定量的に取り扱い、その流体を効率よく混合して所望の挙動を示す流体を、主として土木工事で使用する薬液として円滑に供給できるゾル液製造システムに関するものである。 The present invention relates to a sol solution manufacturing system capable of handling fluids having different physical properties quantitatively and smoothly supplying the fluids that exhibit desired behavior by efficiently mixing the fluids, mainly as a chemical solution used in civil engineering work. .
従来、土木工事で採用される薬液注入工法で使用される注入薬液材には、主に腐食性を有して比較的粘性の高い二通りの液体を定量的に取り扱い、混合槽などで攪拌混合して調整し、得られた硬化材液（通常、Ａ液と称される）と別途調製されたグラウト材（通常、Ｂ液と称される）とを、それぞれ注入管に送り込んで注入箇所で混合して地中に注入するようにされている。 Conventionally, the chemicals used in the chemicals injection method used in civil engineering work mainly handle two types of liquids that are corrosive and relatively viscous, and are stirred and mixed in a mixing tank. The cured material liquid (usually referred to as A liquid) and the separately prepared grout material (usually referred to as B liquid) were respectively fed into the injection pipes at the injection points. They are mixed and injected into the ground.
通常、前記硬化材液としては、例えば水ガラス系溶液材と硬化材（例えば硫酸）及び水を混合調整して作成されている。そのために、物性の異なる液体を反応させて、瞬結するＰＨ中性領域から瞬間的に強酸性領域に移行させて酸性硬化材液とするのに、混合対象液材を如何に効果的な混合ができるかによって作業性の向上を図れるかにかかっている。 In general, the curing material liquid is prepared, for example, by mixing and adjusting a water glass-based solution material, a curing material (for example, sulfuric acid), and water. Therefore, how to effectively mix the liquid material to be mixed in reacting liquids with different physical properties and instantaneously shifting from a neutral pH region to a strongly acidic region to form an acidic hardening material liquid. It depends on whether it is possible to improve workability depending on whether it can be done.
前記硬化材液の調製を行うための手段としては、本発明者の先願発明に係るゾル製造装置が特許文献１によって知られている。このゾル製造装置にあっては、混合する水ガラス系薬液材と硬化材（硫酸）とを、それぞれポンプで所定量ずつ加圧供給してミキサーで攪拌混合し、ゾル液とするものである。このゾル製造装置においては、ミキサーとして本体ケーシングの内部で多数の翼を備える攪拌ホイールが回転する回転ポンプ構造であって、本体ケーシングに攪拌ホイールの外周に接する直線方向の吸込み部が設けられ、攪拌ホイールの回転軸心線に沿って外向きに送出口が設けられた、いわば一般の回転ポンプを逆にした構造となっており、前記吸込み部に被混合液の分別吸込み手段が直結された構成となっている。 As means for preparing the curable material liquid, Patent Document 1 discloses a sol production apparatus according to the inventor's prior application. In this sol manufacturing apparatus, the water glass-based chemical liquid material and the curing material (sulfuric acid) to be mixed are pressurized and supplied by a predetermined amount with a pump, and stirred and mixed with a mixer to obtain a sol liquid. In this sol manufacturing apparatus, a rotary pump structure in which a stirring wheel provided with a large number of blades rotates inside a main casing as a mixer, and the main casing is provided with a linear suction portion in contact with the outer periphery of the stirring wheel. A structure in which a delivery port is provided outward along the rotation axis of the wheel, that is, a structure in which a general rotary pump is reversed, and a configuration for directly sucking a mixed liquid into the suction portion It has become.
そして、前記分別吸込み手段は、二重管構造にして内管側に硬化材液が、外管側に水ガラス系薬液材が、さらに前記外管の中間部に水配管が接続されて、前記ミキサーの吸込み部に直結されてミキサーの攪拌ホイールの回転によって供給される各液体が同時にケーシング内に引き込まれて攪拌され混合する構成となっている。 And the said fraction suction means is made into a double tube structure, the hardening material liquid is connected to the inner tube side, the water glass chemical solution material is connected to the outer tube side, and the water pipe is connected to the middle part of the outer tube, Each liquid that is directly connected to the suction portion of the mixer and supplied by the rotation of the stirring wheel of the mixer is simultaneously drawn into the casing to be stirred and mixed.
また、ミキシングポンプとしては、回転ポンプの回転中心に設けられた吸込み部に、多重管構造の分別吸込み手段の先端部に開閉弁構造が設けられ、中心流路に供給される流体の注入圧によって前記開閉弁を押し開くと回転中心箇所で分別して加圧供給される流体を合流して攪拌される構造のものが特許文献２によって知られている。 In addition, as a mixing pump, an opening / closing valve structure is provided at the tip of a separate suction means having a multi-tube structure at the suction portion provided at the rotation center of the rotary pump, and the pressure of the fluid supplied to the central flow path is Patent Document 2 discloses a structure in which when the on-off valve is pushed open, fluids that are separated and separated at the center of rotation are joined and stirred.
しかしながら、前記特許文献１或いは特許文献２で知られる方式では、物性の異なる二液材（水ガラス系溶液と硫酸）を混合するに際して、回転ポンプ構造を採用して、被混合液材の混合室への受け入れに工夫をしてインペラーの回転力で攪拌混合するようにしても、一時的には混合状態が適正に確保できるが、継続するうちに不安定となり、目的とする強酸性に移行できず、混合後供給する管路途中で凝結して供給不能となる現状がしばしば発生し、注入作業ができなくなるという問題点がある。 However, in the system known from Patent Document 1 or Patent Document 2, when mixing two liquid materials (water glass solution and sulfuric acid) having different physical properties, a rotary pump structure is adopted to mix the liquid materials to be mixed. Even if you devise a method of accepting and mixing with the impeller's rotational force, the mixing state can be temporarily ensured properly, but as it continues, it becomes unstable and can shift to the desired strong acidity. However, there is a problem that the current situation where the product cannot be supplied due to condensation in the supply line after mixing often occurs, and the injection work cannot be performed.
しかも、前述の攪拌方式を採用すると、取扱う液材が腐食性の高いものであるために、ミキシングポンプを構成する部材に耐食性材料を必要とすることからコストアップが避けられない。また、作業途中で運転を止めることになるほか、配管（主にホース）内に残留する注入薬液が凝結することになるため、その始末には非常に多くの労力を要し、作業工費が増大するなど多くの問題点がある。 In addition, when the agitation method described above is adopted, the liquid material to be handled is highly corrosive, and therefore, a corrosion-resistant material is required for the members constituting the mixing pump, so an increase in cost is inevitable. In addition to stopping the operation in the middle of the work, the injected chemical solution remaining in the piping (mainly the hose) will condense, so it takes a lot of labor to clean up and the work cost increases. There are many problems.
本発明では、前述のような問題点を解決し、至極簡単な手段を採用して長期安定性を得て酸性シリカゾル液を製造することができる構成としたゾル製造システムを提供することを目的とするものである。 An object of the present invention is to provide a sol production system that solves the above-mentioned problems and adopts an extremely simple means to obtain long-term stability and produce an acidic silica sol liquid. To do.
前記目的を解決するために、本発明のゾル液製造システムは、
水ガラス水溶液と強酸性液を反応させて瞬結するＰＨ中性領域を瞬間的に強酸性に移行させて酸性シリカゾル液を製造するゾル液製造システムにおいて、
前記各液の合流混合部の直後に、流路内で筒状弾性体の流路断面積を拡縮できる手段を設け、その流路の開口量を調整することによって混合液の流速を速めて、発生乱流により液の攪拌混合を促進させるようにしたことを特徴とする。
In order to solve the above-mentioned object, the sol liquid production system of the present invention comprises:
In a sol solution production system for producing an acidic silica sol solution by instantaneously shifting a PH neutral region, which is instantly formed by reacting a water glass aqueous solution and a strong acid solution, to strong acidity,
Immediately after the merging and mixing part of each liquid, a means for expanding and reducing the cross-sectional area of the cylindrical elastic body in the flow path is provided, and the flow rate of the mixed liquid is increased by adjusting the opening amount of the flow path, It is characterized in that stirring and mixing of the liquid is promoted by the generated turbulent flow.
前記発明において、流路内で筒状弾性体の流路断面積を拡縮できる手段としては、閉鎖構造で中間部を筒状弾性体外周より大きくした加圧室を備える本体ケーシング内で軸方向両端を固定して、前記筒状弾性体の中間部を加圧室内で外部からの流体圧で押圧して拡縮できる構成であるのがよい。また、機械力で直接筒状弾性体を押圧絞縮する構成であるのもよい。 In the present invention, as a means for expanding and reducing the cross-sectional area of the cylindrical elastic body in the flow path, both ends in the axial direction in the main body casing including a pressurizing chamber having a closed structure and an intermediate portion larger than the outer periphery of the cylindrical elastic body. It is good that the intermediate portion of the cylindrical elastic body can be pressed and expanded / contracted by fluid pressure from outside in the pressurizing chamber. Moreover, it is good also as a structure which presses and shrinks a cylindrical elastic body directly with a mechanical force.
本発明によれば、一次混合部で合流混合された混合液を、その直後において絞り部を通過させて混合液に急激な流速を付加して攪拌混合を行うことにより、絞り部以後の圧力開放部において生じる渦流などを交えた発生乱流によって放出液が瞬間的に激しく攪拌混合させることにより瞬結するＰＨ中性領域を瞬間的に強酸性に移行させて酸性シリカゾル液を連続して製造可能となった。 According to the present invention, the mixed solution mixed and mixed in the primary mixing unit is immediately passed through the constriction unit, and a rapid flow rate is added to the mixed solution to perform stirring and mixing, thereby releasing the pressure after the constriction unit. Acidic silica sol solution can be produced continuously by instantaneously shifting the PH neutral region, which is instantaneously linked to strong acidity, by instantaneously mixing vigorously with the turbulent flow generated by the vortex generated in the part. It became.
また、製造過程での管路内でゲル化物が生成される不可的現象を最小限にとどめることができ、従来のように運転途中での作業停止を招くことなく継続運転が可能になる。しかも、運転中で混合液の生成過程においてごくわずかではあるが、生成されるゲル化物が管路壁に付着成長しても筒状弾性体を拡縮操作することで、流速を変化させ強制的に管路壁から剥離させる清掃効果が得られ、この清掃操作が外部から行えるので、管路を分解することなく自動的に清掃できるという効果を奏する。 In addition, it is possible to minimize the inevitable phenomenon in which a gelled product is generated in the pipeline during the manufacturing process, and it is possible to continue the operation without causing a work stoppage during the operation as in the prior art. In addition, even in the process of generating the mixed liquid during operation, even if the gelled product formed adheres and grows on the pipe wall, the cylindrical elastic body is expanded and contracted to change the flow velocity and forcefully. Since the cleaning effect of peeling from the pipeline wall is obtained and this cleaning operation can be performed from the outside, the pipeline can be automatically cleaned without being disassembled.
次に、本発明によるゾル液製造システムの一実施形態について、図面を参照しつつ説明する。 Next, an embodiment of a sol liquid production system according to the present invention will be described with reference to the drawings.
図1に示される本発明のゾル製造システム１は、土木工事における薬液注入工法に使用される注入薬液材（酸性シリカゾル液）を製造する装置に適用したものである。このゾル製造システム１は、薬液注入に使用する薬液材（酸性シリカゾル液）を所要の凝結濃度となるように調整して供給するものであり、水ガラス水溶液と硬化材（例えば希硫酸）に清水を、ともに加圧して効率よく混合調整して供給できるように構成されている。 A sol production system 1 of the present invention shown in FIG. 1 is applied to an apparatus for producing an injection chemical liquid material (acidic silica sol liquid) used in a chemical injection method in civil engineering work. The sol production system 1 is a system in which a chemical liquid material (acidic silica sol liquid) used for chemical liquid injection is adjusted and supplied so as to have a required concentration, and fresh water is added to a water glass aqueous solution and a curing material (eg dilute sulfuric acid). Can be supplied together under pressure and efficiently mixed and supplied.
前記ゾル製造システム１としては、調製するのに使用される水ガラス水溶液と希硫酸および清水をそれぞれの貯槽２，３，４から、それぞれ独立して送液するポンプ５，５ａ，５ｂによって合流混合部１０（以下、「一次混合部１０」という）に送液されるようにし、各配管中に流量調整弁６，６ａ，６ｂを設けて供給液の配合比に応じた液量で一次混合部に送られるようになっている。前記一次混合部１０では各液を合流させて一次混合を行わせる。この一次混合部１０の出口に側には二次混合部２０が設けられ、一次混合部１０で混合された混合液の流速を速めて、急速流動に伴う発生乱流によって液の攪拌混合を促進させ、所望のゾルを製造し、注入管へ供給するようにされている。 As the sol production system 1, the water glass aqueous solution used for the preparation, dilute sulfuric acid and fresh water are combined and mixed by the pumps 5, 5a and 5b which are separately fed from the respective storage tanks 2, 3 and 4, respectively. The liquid is fed to the unit 10 (hereinafter referred to as “primary mixing unit 10”), and the flow rate adjusting valves 6, 6 a, 6 b are provided in the respective pipes, and the primary mixing unit at a liquid amount corresponding to the mixing ratio of the supplied liquid To be sent to. In the primary mixing unit 10, the liquids are combined to perform primary mixing. A secondary mixing unit 20 is provided on the side of the outlet of the primary mixing unit 10 to increase the flow rate of the mixed liquid mixed in the primary mixing unit 10 and promote stirring and mixing of the liquid by the generated turbulent flow accompanying rapid flow. The desired sol is manufactured and supplied to the injection tube.
前記二次混合部２０は、流体の流れ方向（便宜上「軸線方向」という）に前後端で開口部を備えて所定内容積を有する本体ケーシング２１と、この本体ケーシング２１内で軸線方向の両端を固定されて軸線方向に交差する向きで外力により中間内径部分を拡縮できるようにされた筒状弾性体２２と、前記本体ケーシング２１の中間部に設けた制御流体の出入口２４に配管３２を介して繋がる制御流体供給手段３０（コンプレッサー）とによって構成されている（本発明の「流路内で筒状弾性体の流路断面積を拡縮できる手段」に対応する。）。 The secondary mixing unit 20 includes a main body casing 21 having openings at front and rear ends in a fluid flow direction (referred to as “axial direction” for convenience) and having a predetermined internal volume, and both ends in the axial direction within the main body casing 21. A cylindrical elastic body 22 that is fixed and can be expanded and contracted by an external force in a direction intersecting the axial direction, and a control fluid inlet / outlet 24 provided in an intermediate portion of the main body casing 21 via a pipe 32. It is comprised by the control fluid supply means 30 (compressor) connected (corresponding to the "means which can expand / contract the flow-path cross-sectional area of a cylindrical elastic body in a flow path" of this invention).
前記本体ケーシング２１と内蔵される筒状弾性体２２とは、その筒状弾性体２２が軸線方向両端部に形成された鍔部２２ａで本体ケーシング２１と接続用蓋体２５とで固定され、筒状弾性体２２の中間部２２ｂが本体ケーシング２１内に形成された所定空間の加圧室２３に位置するようにされている。なお、前記筒状弾性体２２は中間部２２ｂの肉厚を前後部分よりやや薄く形成されているのが好ましい。また、この筒状弾性体２２は耐食性の高いゴム質材料で形成されている。図中符号８，８ａ，８ｂは流量計であり、２５ａは配管接続口、２５ｂは取付ボルト、４０は制御手段（制御盤）。 The main body casing 21 and the built-in cylindrical elastic body 22 are fixed by the main body casing 21 and the connecting lid body 25 at the flange portions 22a formed at both ends in the axial direction. An intermediate portion 22 b of the elastic body 22 is positioned in a pressurizing chamber 23 in a predetermined space formed in the main body casing 21. The cylindrical elastic body 22 is preferably formed so that the thickness of the intermediate portion 22b is slightly thinner than the front and rear portions. The cylindrical elastic body 22 is made of a rubber material having high corrosion resistance. In the figure, reference numerals 8, 8a and 8b denote flow meters, 25a is a pipe connection port, 25b is a mounting bolt, and 40 is a control means (control panel).
前記二次混合部２０における筒状弾性体２２を拡縮操作する流体としは、加圧エア（以下、単に「エア」という）を使用するのが取扱い上好ましい。そして、このエアは本体ケーシング２１の中間外周部に設けられたエア挿入口２４にエア配管３２されて制御手段４０によって操作されるレギュレーター３３にて前記筒状弾性体２２の絞縮部２６の開口状態が調整され、前記筒状弾性体２２による流路断面積の拡縮が行われるようにされている。 As a fluid for expanding and contracting the cylindrical elastic body 22 in the secondary mixing unit 20, it is preferable in terms of handling to use pressurized air (hereinafter simply referred to as “air”). Then, this air is provided in the air insertion port 24 provided in the intermediate outer peripheral portion of the main body casing 21 by an air pipe 32, and the regulator 33 operated by the control means 40 opens the constricted portion 26 of the cylindrical elastic body 22. The state is adjusted, and the flow path cross-sectional area is expanded or contracted by the cylindrical elastic body 22.
このように構成されるゾル製造システム１は、予め原料液の供給配合量を定めてそれぞれ送液ポンプ５，５ａ，５ｂにより供給すると、一次混合部１０にて中央部に配管７にて希硫酸が送り込まれ、その外側に配管７ａにて水ガラス水溶液が送り込まれ、最外周部には配管７ｂで清水が送り込まれるようにしなっている。この一次混合部１０では、まず水ガラス水溶液と清水が混じり合って水ガラス水溶液が希釈され、この希釈された水ガラス水溶液に対し希硫酸が混入されて内部出口部１０ａですべての液が合流して混合される。 In the sol production system 1 configured as described above, when the supply amount of the raw material liquid is determined in advance and supplied by the liquid feed pumps 5, 5 a, 5 b, the dilute sulfuric acid is connected to the central portion of the primary mixing unit 10 through the pipe 7. Is sent to the outside by a pipe 7a, and fresh water is sent to the outermost peripheral part by a pipe 7b. In the primary mixing unit 10, first, a water glass aqueous solution and fresh water are mixed together to dilute the water glass aqueous solution, dilute sulfuric acid is mixed into the diluted water glass aqueous solution, and all the liquids merge at the internal outlet 10a. And mixed.
一方、二次混合部２０では、本体ケーシング２１内の加圧室２３にエアを供給して筒状弾性体２２を周囲から押圧することにより流通路の中間部２２ｂを絞縮する。こうすることにより、一次混合部１０で合流混合された液は、その出口に直結されて設けられた二次混合部２０において流路を絞縮された筒状弾性体２２内の絞縮部２６を通過して圧力開放部２７に送り出されることにより、一次混合部１０の出口（二次混合部の入口）で所持する圧力状態で絞縮部２６から圧力開放部２７を通過する際、急激に流速が高められる。 On the other hand, in the secondary mixing unit 20, air is supplied to the pressurizing chamber 23 in the main body casing 21 to press the cylindrical elastic body 22 from the periphery, thereby narrowing the intermediate portion 22 b of the flow passage. By doing so, the liquid combined and mixed in the primary mixing unit 10 is reduced in the cylindrical elastic body 22 in which the flow path is reduced in the secondary mixing unit 20 provided directly connected to the outlet thereof. When passing through the pressure release part 27 from the throttling part 26 in the pressure state possessed at the outlet of the primary mixing part 10 (inlet of the secondary mixing part) The flow rate is increased.
前記二次混合部２０における筒状弾性体２２は、両端固定で中間部２２ｂが加圧室２３に臨んでいるので外部からのエアによる押圧力で二点鎖線にて表す筒状（図２参照）から中間が絞縮されて、この絞縮部２６内を混合液が通過することにより、絞縮部２６以後の圧力開放部２７において生じる渦流などを交えた発生乱流によって放出液が瞬間的に激しく攪拌混合され、反応速度を高めて瞬結するＰＨ中性領域を瞬間的に強酸性に移行させて目的とする酸性シリカゾル液が得られる。なお、攪拌混合状態は、筒状弾性体２２を加圧するエアによる加圧状態を制御手段４０によって調整することで絞り量を加減することができる。また、ここで用いられている筒状弾性体２２は、外部からの加圧力によって全閉させるのではなく、流通路を絞縮して通過断面積を任意に調整することにより、流通する混合液を選択的に超速流に加速させ、攪拌混合操作を促進させるものである。 The cylindrical elastic body 22 in the secondary mixing section 20 is fixed at both ends, and the intermediate section 22b faces the pressurizing chamber 23. Therefore, the cylindrical elastic body 22 is represented by a two-dot chain line by pressing force from the outside air (see FIG. 2). ) From the middle, and the liquid mixture passes through the constricted portion 26, so that the discharged liquid is instantaneously generated by the generated turbulent flow including the vortex generated in the pressure releasing portion 27 after the constricted portion 26. The target neutral silica sol solution is obtained by instantaneously shifting the pH neutral region, which is vigorously stirred and mixed, to increase the reaction rate and instantly transition to strongly acidic. In the stirring and mixing state, the amount of squeezing can be adjusted by adjusting the pressurizing state by the air pressurizing the cylindrical elastic body 22 by the control means 40. In addition, the cylindrical elastic body 22 used here is not fully closed by external pressure, but is circulated by constricting the flow passage to arbitrarily adjust the cross-sectional area of passage. Is selectively accelerated to a super-fast flow to promote the stirring and mixing operation.
また、一次混合部１０で三種の液体を合流混合させてから、二次混合部２０で混合液に急激な流速を付加して攪拌混合を行うことにより、製造過程での管路内でゲル化物が生成される不可現象を最小限に留めることができ、従来のように運転途中での作業停止を招くことなく安定的に作業を遂行することができる。 Further, after the three kinds of liquids are merged and mixed in the primary mixing unit 10, the mixture is stirred and mixed by adding a rapid flow rate to the mixed solution in the secondary mixing unit 20. Therefore, it is possible to keep the work stably without causing a work stoppage during operation as in the prior art.
さらに、上述のようにして運転を継続する過程において、混合液の生成過程では、ごくわずかずつではあるが、生成されるゲル化物が、管路壁に付着成長することによって管路が閉塞される最悪の現象も、二次混合部の筒状弾性体を拡縮操作することにより、混合液の流速を激しく変化させて強制的に管路壁から剥離させることが可能になる。 Furthermore, in the process of continuing the operation as described above, in the production process of the mixed liquid, the produced gelled product adheres and grows on the pipeline wall, but the pipeline is blocked. The worst phenomenon is that the cylindrical elastic body of the secondary mixing section is subjected to expansion / contraction operation, so that the flow rate of the mixed liquid can be changed violently and forcibly separated from the pipe wall.
このように、本発明においては、二次混合部における筒状弾性体を外部から拡縮操作するだけで、混合液の攪拌混合部近傍での構成管路を分解することなく自動的に清掃することも可能になった。 As described above, in the present invention, the cylindrical elastic body in the secondary mixing unit is automatically expanded / reduced from the outside, and the component lines in the vicinity of the stirring / mixing unit of the mixed liquid are automatically cleaned without being disassembled. Also became possible.
以上に説明した筒状弾性体を閉鎖した本体ケーシング内の加圧室でエアにより外部から押圧して流路を絞縮する形式の構造について記載したが、このような形式以外に、直圧式ピンチバルブを利用することも可能である。 The structure of the type in which the flow path is constricted by pressing from the outside with air in the pressurizing chamber in the main body casing with the cylindrical elastic body closed as described above is described. It is also possible to use a valve.
１ ゾル製造システム
１０ 一次混合部（合流混合部）
２０ 二次混合部
２１ 本体ケーシング
２２ 筒状弾性体
２３ 加圧室
２４ エア挿入口
２６ 絞縮部
２７ 圧力開放部
３０ 制御流体供給手段（コンプレッサー）
３３ レギュレーター
４０ 制御手段
1 Sol production system 10 Primary mixing section (merging and mixing section)
DESCRIPTION OF SYMBOLS 20 Secondary mixing part 21 Main body casing 22 Cylindrical elastic body 23 Pressurizing chamber 24 Air insertion port 26 Constriction part 27 Pressure release part 30 Control fluid supply means (compressor)
33 Regulator 40 Control means
Claims (2)
前記各液の合流混合部の直後に、流路内で筒状弾性体の流路断面積を拡縮できる手段を設け、その流路の開口量を調整することによって混合液の流速を速めて、発生乱流により液の攪拌混合を促進させるようにしたことを特徴とするゾル液製造システム。 In a sol solution production system for producing an acidic silica sol solution by instantaneously shifting a PH neutral region, which is instantly formed by reacting a water glass aqueous solution and a strong acid solution, to strong acidity,
Immediately after the merging and mixing part of each liquid, a means for expanding and reducing the cross-sectional area of the cylindrical elastic body in the flow path is provided, and the flow rate of the mixed liquid is increased by adjusting the opening amount of the flow path, A sol liquid production system characterized by promoting stirring and mixing of liquids by generated turbulent flow.
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