JPH04219132A - Mixing pipe for discharging kneaded material - Google Patents
Mixing pipe for discharging kneaded materialInfo
- Publication number
- JPH04219132A JPH04219132A JP2411326A JP41132690A JPH04219132A JP H04219132 A JPH04219132 A JP H04219132A JP 2411326 A JP2411326 A JP 2411326A JP 41132690 A JP41132690 A JP 41132690A JP H04219132 A JPH04219132 A JP H04219132A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- supply pipe
- material supply
- mixing
- discharge
- 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
- 239000000463 material Substances 0.000 title claims abstract description 62
- 238000007599 discharging Methods 0.000 title claims 2
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 4
- 239000004567 concrete Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 description 10
- 239000004568 cement Substances 0.000 description 8
- 238000005507 spraying Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000554155 Andes Species 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は粉粒体と液状物が供給
混合されて混練物として吐出される該管路中に配装され
る混合管に関し、モルタル又はコンクリートの吹付工法
に適用して有効なものである。[Industrial Field of Application] This invention relates to a mixing pipe installed in a pipe through which powder and liquid materials are supplied and mixed and discharged as a kneaded material, and is applicable to a mortar or concrete spraying method. It is valid.
【０００２】0002
【従来の技術】従来吹付工法において使用される混合手
段としてはＹ管が用いられている。即ち一方の枝管にモ
ルタル又はコンクリートを供給し、他方の枝管に急結材
等を供給し、交叉部において混合して主管である吐出管
から吐出させるというものである。2. Description of the Related Art Conventionally, a Y-pipe has been used as a mixing means in the spraying method. That is, mortar or concrete is supplied to one branch pipe, and a quick-setting material is supplied to the other branch pipe, and the mixture is mixed at the intersection and discharged from the main discharge pipe.
【０００３】しかしながら混合手段では混合機能が充分
でなく被混合物が相互に分散されないまま放出され、こ
の結果吹付面に帯状の縞模様が現出する。Ｙ管内におけ
る混合効率を向上させるため主管内に絞り部を設けるこ
とも試みられたが、時間当りの吐出量が減少する上、閉
塞を生じたり却って作業性を悪化させるので実際には採
用されていない。However, the mixing means does not have a sufficient mixing function and the materials to be mixed are discharged without being mutually dispersed, resulting in the appearance of band-like striped patterns on the spraying surface. In order to improve the mixing efficiency in the Y-pipe, attempts were made to provide a constriction section in the main pipe, but this was not actually adopted as it would reduce the discharge amount per hour and cause blockages, which would actually worsen workability. do not have.
【０００４】0004
【解決しようとする問題点】本発明は、被混合物である
第一材料及び第二材料が粉粒体又は混練物或は液体であ
っても、管路内におけるそれ自体の移動エネルギーによ
って効率よく混合され、しかも吐出量を低下させない混
合手段を提供するものである。[Problems to be Solved] The present invention enables efficient mixing of the first and second materials, which are powders, kneaded materials, or liquids, using their own moving energy within the pipe. The object of the present invention is to provide a mixing means that allows mixing and does not reduce the discharge amount.
【０００５】[0005]
【解決するための手段】本発明者は種々の実験の結果、
第一材料供給管と吐出管の間に球状空室を設けると共に
該球状空室に第二材料供給管を接続して夫々材料を供給
することによって前記問題点が解決されることを知見し
た。 本発明において球状空室は完全な球空間を意味
するものではなく楕円状の球状空間であってもよい。但
し、球状空室の管軸に直角な断面直径は吐出管直径の７
〜１．５倍の範囲であることが有効である。また、軸方
向の長さは１０〜７０ｃｍで実用上充分である。なお、
第一材料、第二材料供給管の夫々の直径及び圧送圧力等
は、用途及び被混合物の性状によって決められ、混合効
果には些程影響しない。[Means for Solving] As a result of various experiments, the present inventor found that
It has been found that the above-mentioned problem can be solved by providing a spherical cavity between the first material supply pipe and the discharge pipe, and connecting the second material supply pipe to the spherical cavity to supply the respective materials. In the present invention, the spherical cavity does not mean a completely spherical space, but may be an elliptical spherical space. However, the cross-sectional diameter of the spherical cavity perpendicular to the pipe axis is 7 of the discharge pipe diameter.
A range of ~1.5 times is effective. Further, the length in the axial direction is 10 to 70 cm, which is sufficient for practical use. In addition,
The respective diameters and pumping pressures of the first material and second material supply pipes are determined depending on the use and the properties of the materials to be mixed, and do not affect the mixing effect in the slightest.
【０００６】球状空室内に突出する第一材料供給管の先
端部は第一材料供給管直径に対し９０〜１５％で先細に
絞られている必要がある。第二材料供給管の空室に対す
る取付角度は管軸に対して９０°を超えない範囲で自由
である。[0006] The tip of the first material supply pipe protruding into the spherical cavity must be tapered to a diameter of 90 to 15% of the diameter of the first material supply pipe. The attachment angle of the second material supply pipe to the empty space is free within a range of not exceeding 90° with respect to the pipe axis.
【０００７】各供給管に供給される材料の性状は、粉粒
体、液状物又は混練物であるが、いずれの場合にも吐出
管からは液状混練物が放出される。例えば、コンクリー
ト吹付においてセメント、砂、砂利、及び水を予め混練
りしたものに、急結材を添加する湿式方法や、セメント
、砂及び砂利を混練りしたものに、急結材と水を添加す
る乾式方法等に使用可能である。本発明混合管は金属の
他合成樹脂又はゴムの成型品で製作できる。[0007] The material supplied to each supply pipe is in the form of powder, liquid, or kneaded material, and in any case, the liquid kneaded material is discharged from the discharge pipe. For example, in concrete spraying, there is a wet method in which a quick-setting agent is added to a pre-mixed mixture of cement, sand, gravel, and water, or a quick-setting agent and water are added to a mixture of cement, sand, and gravel. It can be used for dry method etc. The mixing tube of the present invention can be made of a molded product of synthetic resin or rubber in addition to metal.
【０００８】配管経路中、本発明混合管を取付ける位置
は、ノズル先端より４０ｍ以内、好ましくは５ｍ以内が
良く、２５ｍより長いと、急結材の反応が進み、ホース
内での閉塞の発生やはね返りの増加となる恐れがある。
更に、必要に応じて第二材料供給管を複数として他の混
和材例えば粉塵低減材、高吸水ポリマー、減水剤等を混
入すれば極めて高い効果が得られる。In the piping route, the mixing pipe of the present invention should be installed within 40 m, preferably within 5 m from the nozzle tip; if it is longer than 25 m, the reaction of the quick-setting material will proceed and blockage may occur within the hose. There is a risk of an increase in rebound. Furthermore, extremely high effects can be obtained by using a plurality of second material supply pipes and mixing other admixtures such as dust reducing materials, super absorbent polymers, water reducing agents, etc. as necessary.
【０００９】以下に第二供給材料にセメント急結材を使
用した場合について説明する。[0009] The case where a cement quick setting material is used as the second supply material will be explained below.
【００１０】0010
【実施例】図において（１） は第一材料供給管、（２
） は先端絞り部、（３） は球状空室であって第一材
料供給管を固着しているか又は進退自在に螺着している
。（４） は、球状空室に連通させた第二材料供給管で
あり、空室の管軸に対し９０°以下の角度θに設定され
ている。（５） は吐出管であってその先端は図示しな
い吹付ノズルに連結されている。空室の管軸方向の長さ
（ａ） は、７０ｃｍ以下好ましくは１０ｃｍ〜５０ｃ
ｍである。膨らみ度合いを示す（ｂ） は、第一材料供
給管の３倍以内であることが有効である。[Example] In the figure, (1) is the first material supply pipe, (2
) is a tip constriction part, and (3) is a spherical cavity to which the first material supply pipe is fixed or screwed so that it can move forward and backward. (4) is a second material supply pipe that communicates with the spherical cavity, and is set at an angle θ of 90° or less with respect to the tube axis of the cavity. (5) is a discharge pipe, the tip of which is connected to a spray nozzle (not shown). The length (a) of the empty chamber in the tube axis direction is 70 cm or less, preferably 10 cm to 50 cm.
It is m. It is effective that (b) indicating the degree of swelling is within three times that of the first material supply pipe.
【００１１】第二材料供給管の連通位置（ｅ） は、ａ
／２ 以内、即ち第一材料供給管側に設けられ、θは３
０°〜８０°の範囲が好ましい。また、第一材料供給管
の直径Ｄと、吐出管の直径Ｄａ の関係は、通常Ｄａ
≦Ｄである。
絞り部（ｃ） の長さは絞り率ｄ／Ｄによっても異なる
が通常１５ｃｍ前後がよい。（ｄ） は第一材料供給管
の先端直径である。第一材料供給管の差し込み長さ（ｃ
） は、（ａ） に対する９０％以下好ましくは７５％
以下である。なお、各供給管の送給圧力は同圧若しくは
０．５ｋｇ／ｃｍ２程度の圧力差があってもよい。The communication position (e) of the second material supply pipe is a
/2, that is, provided on the first material supply pipe side, and θ is 3
A range of 0° to 80° is preferred. Further, the relationship between the diameter D of the first material supply pipe and the diameter Da of the discharge pipe is usually Da
≦D. The length of the aperture part (c) varies depending on the aperture ratio d/D, but is usually around 15 cm. (d) is the diameter of the tip of the first material supply pipe. Insertion length of the first material supply pipe (c
) is 90% or less, preferably 75% of (a)
It is as follows. Note that the feeding pressures of the respective supply pipes may be the same pressure or may have a pressure difference of about 0.5 kg/cm2.
【００１２】0012
【実験例１】セメント３６０ｋｇ、砂１０５３ｋｇ、砂
利７１０ｋｇ、及び水２１６ｋｇの配合のコンクリート
を用い湿式吹付工法により表１に示す各種混合管の混合
性試験を実施した。試験方法は、図示の混合管を用いて
垂直に固定されたベニヤ板に対し、ノズル先端を２ｍ離
した位置からコンクリートを３５０Ｌ吹付け、その状況
及び吹付けたコンクリートの厚みを測定した。その結果
を表１に示す。[Experimental Example 1] Mixability tests were carried out on various mixing pipes shown in Table 1 using a wet spraying method using concrete with a mix of 360 kg of cement, 1053 kg of sand, 710 kg of gravel, and 216 kg of water. The test method involved spraying 350L of concrete onto a plywood board fixed vertically using the mixing pipe shown in the figure from a position 2m apart from the nozzle tip, and measuring the situation and the thickness of the sprayed concrete. The results are shown in Table 1.
【００１３】[0013]
【表１】
なお、急結材添加率は、セメントに対し５重量％とした
。[Table 1] The addition rate of the quick-setting agent was 5% by weight based on the cement.
【００１４】試験の結果、本発明の混合管を使用するこ
とにより閉塞もなく、混合性を高めることができ、急結
材の性能を充分発揮させることを可能とすることがわか
った。
［使用材料］
セメント：普通ポルトランドセメント（アンデスセメン
ト株式会社製）
砂 ：新潟県姫川産（５ｍｍ下）砂利
：新潟県姫川産（Ｇｍａｘ １５ｍｍ）急結材 ：
商品名「デンカナトミックＴｙｐｅ−５」電気化学工業
株式社製[0014] As a result of the test, it was found that by using the mixing tube of the present invention, there was no clogging, the mixing performance could be improved, and the performance of the quick-setting material could be fully exhibited. [Materials used] Cement: Ordinary Portland cement (manufactured by Andes Cement Co., Ltd.) Sand: Gravel from Himekawa, Niigata Prefecture (5 mm below)
: Quick-setting material from Himekawa, Niigata Prefecture (Gmax 15mm) :
Product name: “Denka Atomic Type-5” Manufactured by Denki Kagaku Kogyo Co., Ltd.
【００１５】[0015]
【実験例２】実験例１と同様配合のコンクリートを用い
、実験例１の実験Ｎｏ．４、５の２種で、トンネルの吹
付工事を実施した。なお、ｄ／Ｄは７０％とした。急結
材の添加率をセメントに対し、７重量％の条件で吹付け
を行い、材料のはね返り率を測定したところ、実験Ｎｏ
．４の混合管、すなわち、本発明の混合管では、１０．
２％であったが、実験Ｎｏ．５の混合管の場合では、２
８％となり、本発明が優れていることがわかった。又、
実験Ｎｏ．４について急結材の添加率をセメントに対し
４重量％として、吹付けを行ったところ、材料のはね返
り率は２５％となり、実験Ｎｏ．５と同程度のはね返り
率となった。すなわち、本発明を用いることにより急結
材の使用量を減少できることがわかった。
［使用材料］
実験例１と同様。[Experimental Example 2] Using concrete with the same mix as in Experimental Example 1, Experiment No. 1 of Experimental Example 1 was used. Two types, 4 and 5, were used to perform tunnel spraying work. Note that d/D was 70%. When spraying the quick-setting agent at an addition rate of 7% by weight to cement and measuring the rebound rate of the material, Experiment No.
．． In the mixing tube of No. 4, that is, the mixing tube of the present invention, 10.
2%, but Experiment No. In the case of 5 mixing tubes, 2
8%, indicating that the present invention is superior. or,
Experiment no. Experiment No. 4 was sprayed with the rapid setting agent added at a rate of 4% by weight relative to the cement, and the rebound rate of the material was 25%. The rebound rate was similar to that of 5. That is, it was found that the amount of quick-setting material used can be reduced by using the present invention. [Materials used] Same as Experimental Example 1.
【００１６】[0016]
【実験例３】実験例１の実験Ｎｏ．４の仕様でｄ／Ｄを
変化させて実験を行った。その結果を表２に示す。[Experiment Example 3] Experiment No. of Experiment Example 1. Experiments were conducted by varying d/D with the specifications of 4. The results are shown in Table 2.
【００１７】[0017]
【表２】[Table 2]
【００１８】[0018]
【効果】本発明混合管は混合性が優れているので比較的
小型のもので効果を発揮でき、しかも圧送圧力を高める
必要がなく、また設置箇所の自由度が大きいので現場に
おける使い勝手が向上する。従って、本発明を急結塗装
材に利用した場合は、第二供給材である急結材の使用量
を節減できるばかりでなく、吐出混合物のはね返り及び
粉塵発生を減少させることが可能となる。[Effects] The mixing pipe of the present invention has excellent mixing properties, so it can be effective even with a relatively small size, and there is no need to increase the pressure for pumping.Also, there is a large degree of freedom in installation locations, which improves usability on site. . Therefore, when the present invention is applied to a quick-setting coating material, it is possible not only to reduce the amount of the quick-setting material used as the second supply material, but also to reduce the splashing of the discharged mixture and the generation of dust.
【図１】図１は、本発明実施例の要部断面図である。FIG. 1 is a sectional view of a main part of an embodiment of the present invention.
１は第一材料供給管 ４は第二材料供給管 ３は球状空室 ａは球状空室の管軸方向の長さ ｂは供給管との半径差 ｃは第一供給管の絞り部の長さ ｅは第二供給管を連通させる位置 1 is the first material supply pipe 4 is the second material supply pipe 3 is a spherical vacancy a is the length of the spherical cavity in the tube axis direction b is the radius difference from the supply pipe c is the length of the constricted part of the first supply pipe e is the position where the second supply pipe is communicated
Claims (4)
る球状空室と該空室に前記第一材料供給管に対し９０゜
以下の所定角度で連設された少なくとも１つの第二材料
供給管とからなる混練物の吐出用混合管。1. A spherical cavity interposed between a discharge pipe and a first material supply pipe, and at least one spherical cavity connected to the cavity at a predetermined angle of 90° or less with respect to the first material supply pipe. A mixing pipe for discharging a kneaded material, which is composed of two second material supply pipes.
の７倍〜１．５倍である請求項１記載の混合管。2. The mixing tube according to claim 1, wherein the diameter of the cross section perpendicular to the axis of the spherical chamber is 7 to 1.5 times the diameter of the discharge tube.
５％でなる請求項１又は２記載の混合管。Claim 3: The constricted portion at the tip of the first material supply pipe is 90 to 1
The mixing tube according to claim 1 or 2, comprising 5%.
ル又はコンクリートであり第二材料供給管に供給される
材料が急結材である請求項１、２、３記載のいずれかの
混合管。4. The mixture according to claim 1, wherein the material supplied to the first material supply pipe is mortar or concrete, and the material supplied to the second material supply pipe is a quick-setting material. tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2411326A JP2904590B2 (en) | 1990-12-18 | 1990-12-18 | Mixing pipe for discharge of kneaded material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2411326A JP2904590B2 (en) | 1990-12-18 | 1990-12-18 | Mixing pipe for discharge of kneaded material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04219132A true JPH04219132A (en) | 1992-08-10 |
| JP2904590B2 JP2904590B2 (en) | 1999-06-14 |
Family
ID=18520344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2411326A Expired - Fee Related JP2904590B2 (en) | 1990-12-18 | 1990-12-18 | Mixing pipe for discharge of kneaded material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2904590B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004508568A (en) * | 2000-09-04 | 2004-03-18 | エスコム | Reactor |
| JP2006102724A (en) * | 2004-10-08 | 2006-04-20 | Fujikin Inc | Apparatus for mixing fluid |
| JP2009028624A (en) * | 2007-07-26 | 2009-02-12 | Teral Inc | Liquid chemical injection apparatus |
-
1990
- 1990-12-18 JP JP2411326A patent/JP2904590B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004508568A (en) * | 2000-09-04 | 2004-03-18 | エスコム | Reactor |
| JP2006102724A (en) * | 2004-10-08 | 2006-04-20 | Fujikin Inc | Apparatus for mixing fluid |
| JP2009028624A (en) * | 2007-07-26 | 2009-02-12 | Teral Inc | Liquid chemical injection apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2904590B2 (en) | 1999-06-14 |
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