JP2001079827A - In-pipeline mixing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve kneadability. SOLUTION: A kneading pipeline 2 with a discharging path 2d of a kneaded substance on its downstream end part, an outlet 5 for feeding powder granule into this kneading pipeline 2, an agitating and mixing shaft 3 for kneading a material in the kneading pipeline 2, a rotating and driving means 4 for it and outlet 6 for kneading water formed at a site between the outlet 5 and the discharging path 2d on the outer face of the agitating and mixing shaft 3 are provided. The kneading water is rotated and scattered from the outlet 6 on the powder granule fed into the pipeline 2 on a process where it is transferred to the discharging path 2d by means of the agitating and mixing shaft 3 and the kneading water is scattered as fine water drops or fine particles on the surface of the powder granules and they reach the discharging path 2d while they are kneaded by means of rotating agitating blades 3B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cement slurry or mortar slurry (hereinafter, referred to as "kneading water") which is obtained by kneading granules such as cement, bentonite, fine aggregate and kneading water (water for kneading such as water and mud). (Also called cement slurries)
The present invention relates to an in-pipe mixing apparatus suitable for producing cellular cement, cellular mortar, etc., obtained by kneading these with a foaming agent.

[0002]

2. Description of the Related Art Recently, various ground improvement methods using cement slurries such as a surface layer mixing method, a shallow layer mixing method, a deep layer mixing method, and a soil cement wall method have become widespread. Many of the cement slurry manufacturing plants used for these methods are batch-type manufacturing, so the equipment is large, and the transportation, assembly and disassembly costs are high, and the installation area is too large. There is.

On the other hand, Japanese Patent Laid-Open Nos. 4-7422 and 11-1949 disclose such problems.
No. 6 discloses an in-pipe mixing apparatus.

The in-pipe mixing apparatus disclosed in Japanese Patent Application Laid-Open No. 4-7422 (hereinafter referred to as "Prior Art 1") has a mud supply section at one end and a kneaded matter discharge section at the other end. A pipe, a stirring / mixing shaft provided in the kneading pipe, a driving unit for rotating the stirring / mixing shaft about its axis, and a supply unit and a discharge unit on the outer surface of the stirring / mixing shaft. And a discharge port for granules of cement or the like formed at a portion between them, and a mud supplied from a supply section into a kneading pipe by a stirring and mixing shaft rotated by a driving means, and a rotation from a discharge port. The kneaded material is kneaded with the powder and granules to be sprayed, and the kneaded material is discharged from a discharge portion, and can continuously produce cement slurries.

The in-pipe mixing apparatus disclosed in Japanese Patent Application Laid-Open No. H11-19496 (hereinafter referred to as "Prior Art 2") has a supply section for powdery and granular materials and a supply section for kneading water at one end, respectively. A kneading pipe having a discharge section at the other end, a stirring / mixing shaft provided in the kneading pipe, and a driving means for rotating the stirring / mixing shaft about its axis. The mixing and mixing shaft is configured to knead the powder and granules and the kneading water respectively supplied into the kneading conduit from the powder and granule supply unit and the kneading water supply unit, and discharge the kneaded material from the discharge unit. Thus, it is possible to continuously produce cement slurries.

[0006] In the apparatus of the preceding example 2, when producing foamed cement or foamed mortar, etc., a foaming agent discharge port is provided on the outer surface of the stirring and mixing shaft. A foaming agent is added to the mixture during kneading, and further kneading is performed.

[0007]

However, these conventional in-pipe mixing apparatuses have room for further improvement in kneading properties.

That is, in Prior Example 1, while being stirred,
Since the granular material is sprayed on the mud which substantially forms a clump due to the contained water, the granular material is hardly mixed with the mud. In the prior example 2, the powder and the granular material are kneaded by a quantitative supply device such as a rotary feeder. Since water was introduced into the kneading pipe from the outside of the pipe, lumps were easily formed, and in any case, kneading was likely to be insufficient. In particular, prior example 2
In the case of producing a cellular cement or the like, in addition to the kneading of the powder and granules and the kneading water, a foaming agent was added to these during the kneading and further kneading was performed, so that it was difficult to mix the foaming agent uniformly.

Accordingly, a main object of the present invention is to improve kneading properties and to enable uniform kneading.

[0010]

According to a first aspect of the present invention, there is provided an in-pipe mixing apparatus for kneading powder and granules and kneading water in a pipe. A kneading conduit having a portion, a stirring / mixing shaft arranged in the kneading conduit along the axial direction for kneading the material, a driving means for rotating and driving the stirring / mixing shaft around its axis, Powder and granule supply means for feeding the granules from the outside into the stirring and mixing shaft and discharging the particles between the outer surface of the stirring and mixing shaft and the inner surface of the kneading pipe at a position upstream of the discharge portion; Kneading water supply means for supplying pressure between the outer surface of the stirring and mixing shaft and the inner surface of the kneading pipe at a position upstream of the discharge section from the mixing and mixing shaft. The body and kneading water are kneaded by the rotating stirring and mixing shaft, and the kneaded material is kneaded. A conduit mixing apparatus characterized by being configured so as to be discharged from the discharge portion.

According to a second aspect of the present invention, the discharge section is directly connected to a pressure pump, the pressure pump is pumped to a target location by the pressure pump, the powder is air-fed, and the air is supplied to the kneading line. 2. The in-pipe mixing device according to claim 1, wherein an exhaust passage for exhausting the air is communicated.

According to a third aspect of the present invention, there is provided an in-pipe mixing apparatus for kneading powder and granules and kneading water in a pipe.
A kneading pipe having a kneaded material discharge section, a stirring / mixing shaft arranged along the axial direction in the kneading pipe to knead the materials, and a drive for rotating the stirring / mixing shaft about its axis. Means for supplying a granular material between the outer surface of the stirring / mixing shaft and the inner surface of the kneading pipe via an input port on the wall of the kneading pipe from outside at a position upstream of the discharge section; Means, kneading water is externally pumped into the stirring and mixing shaft from outside,
The kneading water supply means independent of the powder and granule supply path, which is discharged between the outer surface of the stirring and mixing shaft and the inner surface of the kneading pipe at a position on the upstream side of the discharge portion, and the supplied granules and Mixing water is kneaded by the rotating stirring and mixing shaft, and the kneaded material is discharged from the discharge section.

According to a fourth aspect of the present invention, there is provided an in-pipe mixing apparatus for kneading powder and granules and kneading water in a pipe.
A kneading pipe having a kneaded material discharge section, a stirring / mixing shaft arranged along the axial direction in the kneading pipe to knead the materials, and a drive for rotating the stirring / mixing shaft about its axis. Means, and at a position upstream of the discharge section, the first powder and the second powder are kneaded with the outer surface of the stirring / mixing shaft from outside via different inlets of the wall of the kneading pipe, respectively. First and second powder supply means and second powder supply means for supplying the kneading water from the outside into the stirring and mixing shaft, which are supplied to the inner surface of the pipe, and upstream of the discharge section A kneading water supply means for discharging between the outer surface of the stirring and mixing shaft and the inner surface of the kneading pipe at the position, and the first and second supplied granules and the kneading water being rotated are stirred and mixed. That the kneading is performed by a shaft and the kneaded material is discharged from the discharge unit. A conduit mixing device according to symptoms.

According to a fifth aspect of the present invention, the screw blade region in which the screw blade adjacent to the inner wall of the kneading pipe is integrated at the kneading pipe upstream section of the stirring and mixing shaft is agitated at the downstream kiwa section. A stirring and mixing blade region in which the mixing blades are integrated is provided, respectively, the input port is in the screw blade region, the discharge port of the kneading water is in the stirring and mixing blade region, and the pushing action of the screw blade is performed. By this, while transferring the powder and granules downstream, to the powder and granules that reached the stirring and mixing blade region, stirring and kneading the kneading water discharged from the discharge port of the kneading water, 5. The in-pipe mixing device according to claim 3, wherein the kneaded material is discharged from the discharge portion.

According to a sixth aspect of the present invention, there is further provided a foaming agent kneading pipe having a final kneaded material discharge portion, and a stirring and mixing means for mixing and kneading the materials arranged in the foaming agent kneading pipe along the axial direction. A blowing agent kneading means having a shaft and a blowing agent supply means for pumping the blowing agent from the outside into the stirring / mixing shaft and discharging the blowing agent between the outer surface of the stirring / mixing shaft and the inner surface of the blowing agent kneading pipe; The kneaded material discharged from the discharge unit is supplied into the blowing agent kneading conduit, and the kneaded material and the foaming agent are kneaded by the rotating stirring and mixing shaft, and the final kneaded material is discharged into the final kneaded material discharging unit. The in-pipe mixing apparatus according to any one of claims 1 to 4, further comprising a foaming agent kneading means for kneading a foaming agent configured to be discharged from the apparatus.

According to a seventh aspect of the present invention, the in-pipe mixing apparatus according to any one of the first to sixth aspects is arranged laterally,
An agitator is provided below the discharge portion, and the kneaded material from the discharge portion is agitated in the agitator, and the agitated kneaded material is fed to a target location.

In the present invention, kneading water means not only water but also a water-containing material used for kneading, such as muddy water or mud.

<Operation> In the present invention, since the kneading water comes into contact with the supplied granular material for the first time in the kneading pipe, the discharge position of the kneading water is changed in the circumferential direction by rotation of the stirring and mixing shaft. , So they are easy to mix,
Uniform kneading becomes possible.

In the case of producing cellular cement or the like, a foaming agent is further supplied to and kneaded with the kneaded material after kneading, so that the foaming agent can be uniformly kneaded.

[0020]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. <First Embodiment; Regarding the Invention According to Claim 1> FIG.
1 shows an in-line mixing apparatus example 1 according to a first embodiment. In Example 1, the kneading pipe 2 is disposed horizontally, and a kneaded material discharge path 2d communicates with a lower portion of the downstream end of the kneading pipe 2. A stirring / mixing shaft 3 formed of, for example, a double tube, having two independent flow paths and coaxial with the tube axis, is passed through the kneading line 2, and both ends are rotatable by swivels 9, 9. It is supported by. The stirring and mixing shaft 3 is driven to rotate around the axis by a rotation driving means 4 such as a motor.

The stirring and mixing shaft 3 has a screw blade 3A formed on the outer peripheral surface of the shaft end opposite to the discharge passage 2d in the kneading pipe, and has an outer peripheral surface from the screw blade forming portion to the discharge passage 2d. , A plurality of plate-like pieces 3b, 3b,... Arranged discontinuously along a spiral direction around the axis, and a stirring blade 3B is formed that exhibits a material transferring action to the discharge path 2d and a stirring and mixing action. Things. Although not shown, a stirring / mixing member having a stirring / mixing action but not having a transferring action (such as a rod-shaped member) may be provided instead of the stirring blade, and the kneaded material may be transferred only by the transferring action of the screw.

In the present embodiment, a supply means is provided for supplying the powder and granules to the kneading pipe 2 through one flow path of the stirring and mixing shaft 3. That is, an external powder supply channel 5i is provided from the outside, which is connected to the alligator downstream of the kneading pipe 2, and the powder is air-fed (conveyed on air) through the powder supply channel 5i. The screw blade 3A in the portion where the stirring blade 3B of the stirring and mixing shaft 3 is formed passes through the inside of the stirring and mixing shaft 3, and discharges from the granular material discharge port 5 formed at the end of the wedge. Discharge path 2d in the upper wall of kneading pipe 2
An exhaust path 7 for the compressed air is communicated with a position opposite to.

On the other hand, supply means for supplying kneading water to the kneading pipe 2 through another flow path of the stirring / mixing shaft 3 is provided. That is, a kneading water supply path 6i from the outside which is connected to the alligator downstream of the kneading pipe line 2 is provided, and (water, muddy water, mud) is pumped through the kneading water supply path 6i by a pump or the like. Through another flow path in the stirring and mixing shaft 3, a portion on the outer surface of the stirring and mixing shaft 3 between the powder supply position (that is, the powder discharge opening 5 forming position) and the discharge path 2 d, The water is discharged from the mixing water discharge port 6.

At the time of kneading, the agitating / mixing shaft 3 is rotated by the rotary driving means 4, the powder is discharged from the powder discharge port 5 into the kneading pipe 2, and the water is discharged from the mixing water discharge port 6. The kneading water is discharged. The granular material supplied into the pipe 2 is transferred toward the discharge path 2d by the transfer action of the screw blade 3A and the stirring blade 3B. During this transfer, at the position of the mixing water discharge port 6, the mixing water is sprayed from the mixing water discharge port 6 to the surface of the granular material.
The kneading water is scattered as fine water droplets or fine particles on the surface of the granular material by such rotary spraying, and the granular material and the kneading water reach the discharge path 2d while being kneaded by the rotating stirring blade 3B. It is discharged as a kneaded material. In particular, since the kneading water is scattered as fine water droplets or fine particles on the surface of the granular material by the rotation spraying, the kneading property by the subsequent stirring blade 3B is excellent, and uniform kneading becomes possible. The kneaded material discharged from the discharge passage 2d is
It is pumped to the destination (destination location) via 0.

Here, the same applies to the following embodiments, except that the powder / particle discharge port 5 and the kneading water discharge port 6 are formed on the outer wall surface of the stirring / mixing shaft 3 and at an appropriate position on the stirring blade 3B. It can be formed in communication with the stirring and mixing shaft 3.

In the apparatus 1, when a self-hardening material such as cement slurry is manufactured, a hydraulic powder (cement or cement and fine aggregate) is supplied through a powder supply path 5i. The kneading water such as water, muddy water and mud is supplied to the kneading water supply passage 6i through the agitation mixing shaft 3 and supplied to the kneading pipe 2 from the powdery material discharge port 5 on the outer wall surface. Then, the mixture is supplied through the stirring / mixing shaft 3 to the inside of the kneading pipe 2 from the discharge port 6 on the outer wall surface, and kneaded by the stirring / mixing shaft 3.

Although not shown, in the device 1,
The stirring / mixing shaft 3 has a three-channel structure, and a blowing agent discharge port is provided at a position between the kneading water discharge port 6 and the kneading pipe discharge section 2d.
A foaming agent can be further added to the hydraulic powder and the kneading water and kneaded to produce a self-hardening material containing bubbles.

<Second Embodiment; Regarding the Invention According to Claim 3> In the example shown in FIG.
Is provided so as to supply the granular material from the granular material discharge port 5 into the kneading pipe 2 via the stirring and mixing shaft.
In the present embodiment, the granular material is temporarily stored in a storage device such as a hopper, and is configured to be injected into the inside of the kneading pipe 2 from an input port of the wall of the kneading pipe 2 through a fixed-quantity supply device. Things.

FIG. 2 shows an example of the apparatus 101. In the example of the present apparatus 101, an inlet (supply port) 2i is formed in communication with the wall above the screw blade 3 in the kneading pipe 2, and the outlet of the rotary feeder 10 is connected to the inlet 2i.
The outlet of the hopper 11 is connected to the inlet of the rotary feeder 10. In this case, the granular material cut out from the hopper 11 by the rotary feeder 10 and supplied into the kneading line 2 is transferred to the stirring and mixing blade 3B side by the screw blade 3A, and then the discharge port 6 is discharged by the stirring and mixing blade 3B. Is kneaded with the kneading water that is sprinkled from.

Although not shown, other quantitative feeders, for example, a belt conveyor, can be used in place of the rotary feeder.

<Third Embodiment; Regarding the Invention According to Claim 4> In the above example, as in the case of producing cement mortar, for example, a plurality of types of powders (cement and fine aggregate) and water are mixed. In the case of kneading, it is possible to cope by mixing a plurality of kinds of powders and granules in advance into the kneading line 2 by the above-mentioned powder and granules supply means. However, in the present embodiment, it is also possible to provide a supply means for the inside of the kneading pipe 2 in accordance with the number of types of the powder and granules.

As an example, FIG. 3 shows an apparatus 102 in which two powder supply units 20 and 21 each having the same hopper 10 and rotary feeder 11 as those of the first modification are arranged in parallel along the material transfer direction. Was. The metering device in one or both feeding means may be a belt conveyor. In this case, the supply portions of the supply means 20 and 21 into the kneading pipe 2 are displaced in the longitudinal direction of the pipe, and the screw blade 3a forming portion of the stirring and mixing shaft 3 is extended so as to cover them.

For example, when mortar is manufactured by the present apparatus 102, the kneading pipe 2
A fine aggregate such as sand is supplied into the inside, and cement is supplied into the kneading pipe 2 by the other supply means 21. The supplied cement and fine aggregate are immediately transferred to the stirring / mixing blade 3B side by the screw blade 3A, and thereafter kneaded by the stirring / mixing blade 3B with kneading water which is rotationally sprayed from the kneading water discharge port 6.

Further, one supply means 20 supplies bentonite into the kneading pipe 2, and the other supply means 21 supplies cement into the kneading pipe 2, and the cement and the cement are dispersed from the outer surface of the stirring and mixing shaft 3. And kneading water to produce a cement slurry.

Further, in the present invention, as long as the kneading water is sprinkled from the discharge port 6 formed in the stirring / mixing shaft 3, the kneading water is supplied into the kneading pipe 2 from another portion together with the water. You can also. For example, in the apparatus shown in FIG. 3, muddy water or mud is supplied from one supply means 20 into the kneading pipe 2, and powder or the like such as cement is supplied from the other supply means 21 into the kneading pipe 2. And supply these,
Kneading the kneading water sprayed from the outer surface of the stirring mixing shaft 3;
A cement slurry can also be produced. in this case,
There is an advantage that the amount of the kneading water sprayed can be adjusted in relation to the water content of the kneading water supplied from the external supply means.

<Fourth Embodiment: Regarding the Invention of Claim 6> In the present invention, when producing a cell-containing material such as cellular cement, the kneaded material discharged from the discharge portion of the kneading pipe line 2 is manufactured. Agent kneading means 2 for kneading a foaming agent
It is proposed to have a kneading-separation type configuration with 00.

As an example of this, FIG. 4 shows an apparatus 103 in which a blowing agent kneading apparatus 200 is connected to the discharge side of the in-pipe mixing apparatus 101 (the mixing apparatus of the second embodiment) shown in FIG. . This foaming agent kneading apparatus 200 is similar to the in-pipe mixing apparatus 101 of FIG. 2 except that a foaming agent is supplied in place of kneading water.
Has a substantially similar configuration.

That is, the present foaming agent kneading apparatus 200 (hereinafter, referred to as “the kneading apparatus”)
The second mixer is also referred to as a second mixer 1 in FIG.
No. 01 (hereinafter also referred to as a first mixer) has a supply port 205 communicating with a discharge path 2d at an upper portion of the upstream end and a discharge path 202d for kneaded material at a downstream end.
A second stirring / mixing shaft 203 which is coaxially supported in the blowing agent kneading conduit 202 and is driven to rotate around its axis by a second driving means 204; Pipe supply port 20 on the outer surface of the stirring / mixing shaft 203 of FIG.
5 and a discharge port 206 of a foaming agent formed at a portion between the discharge path 202d and the discharge path 202d. Second stirring and mixing shaft 203
In this case, a screw blade 202A is formed on the outer peripheral surface of a portion of the second kneading pipe 202 located below the supply port 205, and the screw passage 202 is formed through the screw blade forming portion.
On the outer peripheral surface up to 2d, a stirring blade 203B is formed which exhibits a material transferring action to the discharge path 202d and a stirring and mixing action.

At the time of kneading, the first mixer 101
Also, the second mixer 200 is operated. That is, in the first mixer, while the stirring and mixing shaft 3 is rotated by the rotation driving means 4, the powdery material in the hopper 11 is supplied into the kneading pipe 2 by the rotary feeder 10, and the kneading is performed from the discharge port 6. Sprinkle water.
The granular material supplied into the pipe 2 is immediately transferred to the stirring / mixing blade 3B side by the screw blade 3A, and then kneaded by the stirring / mixing blade 3B with kneading water which is rotationally sprayed from the discharge port 6, The kneaded material is supplied to the second mixer 200 via the discharge path 2d.

In the second mixer, the kneaded material supplied from the discharge passage 2d of the first mixer 101 into the second kneading pipe 202 through the supply port is fed to the screw blade 20.
3A, the mixture is immediately transferred to the stirring and mixing blade 203B side, and thereafter, the mixing and mixing blade 203B kneads with the foaming agent that is rotationally sprayed from the discharge port 206, and the kneaded and generated bubble-containing material is discharged through the discharge path 202d. You. This bubble-containing material is fed to the destination by a pressure pump as needed.

In the present invention, another kneading device for a foaming agent can be used. Further, the mixer 10 of the present embodiment
Instead of 1, the above-described in-pipe mixing devices 1 and 102 can be used. As an example of this, FIG. 5 shows an apparatus 104 employing the in-line mixing apparatus 1 shown in FIG.

<Fifth Embodiment: Regarding the Invention According to Claim 7> In the case where it is expected that stirring is not sufficient in the mixing device in the horizontal pipe in each of the above embodiments, as shown in FIGS. , An agitator 1 having a shaft 101 and a stirring blade 102 below the discharge section.
The agitator 100 may be configured to stir the kneaded material from the discharge portion and to feed the stirred kneaded material to a target location.

Here, as the in-pipe mixing apparatus, the one shown in FIG. 2 is used, but naturally the in-pipe mixing apparatus shown in other figures can also be used.

[0044]

As described above, according to the present invention, kneading properties are improved, and kneading can be performed more uniformly.

[Brief description of the drawings]

FIG. 1 is a diagram showing a front and a longitudinal section of a main part of an in-pipe mixing apparatus according to a first embodiment.

FIG. 2 is a view showing a front surface and a longitudinal section of a main part of a second embodiment.

FIG. 3 is a diagram showing a front view and a longitudinal section of a main part of a third embodiment.

FIG. 4 is a diagram showing a front and a longitudinal section of a main part of an in-pipe mixing apparatus according to a fourth embodiment.

FIG. 5 is a diagram showing a front and a longitudinal section of a main part of a modification of the fourth embodiment.

FIG. 6 is a view showing a front and a vertical section of a main part of a modification of the fifth embodiment.

FIG. 7 is a cross-sectional view thereof.

[Explanation of symbols]

1, 101 to 104: mixing device in a pipeline, 2: kneading pipeline,
3 ... stirring and mixing shaft, 4 ... driving means, 5 ... powder and granular material discharge port, 6
... Discharge port for kneading water, 30 ... Pressure pump.

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[Procedure amendment]

[Submission date] September 13, 1999 (1999.9.1)
3)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C04B 38/02 C04B 38/02 A E04G 21/02 101 E04G 21/02 101 F term (reference) 2E172 BA09 BA14 BA16 DC06 4G037 AA08 EA03 4G056 AA07 AA21 CB01 CB15 CB23 CB27 CB32 CC09 CC39 CD15 CE04 4G078 AA02 AB02 BA01 DA09 DA28 DC06 EA10

Claims (7)

[Claims] An in-pipe mixing device for kneading powder and granules and kneading water in a pipe, comprising: a kneading pipe having a discharge portion of a kneaded material; A stirring / mixing shaft which is arranged along the stirrer and kneads the material, a driving means for rotating and driving the stirring / mixing shaft around the axis thereof; A powder supply means for discharging between the outer surface of the stirring and mixing shaft and the inner surface of the kneading pipe at a position more upstream than the outside, and pressure-feeding kneading water into the stirring and mixing shaft from outside, and upstream of the discharge portion Kneading water supply means for discharging between the outer surface of the stirring / mixing shaft and the inner surface of the kneading pipe at the position, and kneading the supplied granular material and kneading water by the rotating stirring / mixing shaft. Wherein the kneaded material is discharged from the discharge section. Mixing device in the pipeline. 2. The discharge section is directly connected to a pressure feed pump. The discharge pump is pressure-fed to a target location by the pressure feed pump, the powdery material is pressure-fed, and the kneading pipe has an exhaust path for exhausting the air. The in-pipe mixing device according to claim 1, which is in communication. 3. An in-pipe mixing apparatus for kneading powder and granules and kneading water in a pipe, comprising: a kneading pipe having a discharge portion for kneaded material; A stirring and mixing shaft arranged along the stirrer and a driving means for rotating the stirring and mixing shaft around its axis; and a position upstream of the discharge section, the above-described kneading of the powder and granules from outside. A powder material supply means for supplying between the outer surface of the stirring / mixing shaft and the inner surface of the kneading pipe via an inlet of the pipe wall, and kneading water which is externally fed into the stirring / mixing shaft from the outside, and the discharge section Kneading water supply means independent of the powder material supply passage, which is discharged between the outer surface of the stirring / mixing shaft and the inner surface of the kneading pipe at a position further upstream than the mixing material and the kneading water Are kneaded by the rotating stirring and mixing shaft, and the kneaded material is discharged from the discharge portion. An in-pipe mixing apparatus characterized in that it is configured as follows. 4. An in-pipe mixing apparatus for kneading powders and granules and kneading water in a pipe, comprising: a kneading pipe having a discharge portion for kneaded material; A stirring / mixing shaft that is arranged along the stirrer and kneads the material, a driving unit that drives the stirring / mixing shaft to rotate around its axis, and a first powder and a granule at a position upstream of the discharge unit. A first powder and granule supply means for supplying the second powder and the second powder between the outer surface of the stirring / mixing shaft and the inner surface of the kneading pipe via the different inlets on the wall of the kneading pipe;
Kneading water, by supplying kneading water from the outside into the stirring and mixing shaft and discharging between the outer surface of the stirring and mixing shaft and the inner surface of the kneading pipe at a position upstream of the discharge portion. Class supply means, and the supplied first and second powdery granules and kneading water,
The in-pipe mixing device, wherein the mixing is performed by the rotating stirring and mixing shaft, and the kneaded material is discharged from the discharge unit. 5. A screw blade region in which a screw blade adjacent to an inner wall surface of a kneading pipe is integrated with a kneading pipe upstream portion of the stirring and mixing shaft, and a stirring and mixing blade is integrated with a downstream kneading portion. The stirring port is provided in the screw blade area, and the discharge port of the kneading water is in the stirring mixing blade area. The kneaded water discharged from the discharge port of the kneading water is stirred and kneaded with the powder and granules that have reached the stirring and mixing blade region while being transferred to the downstream side, and the kneaded material is discharged to the discharge section. The in-pipe mixing device according to claim 3 or 4, wherein the mixing device is configured to discharge from the pipe. 6. A foaming agent kneading conduit having a final kneaded material discharge portion, a stirring / mixing shaft disposed in the foaming agent kneading conduit along the axial direction for kneading materials, and a foaming agent. Blowing agent kneading means having blowing agent supply means having a blowing agent supply means for pressure-feeding the inside of the stirring / mixing shaft from the outside and discharging the mixture between the outer surface of the stirring / mixing shaft and the inner surface of the blowing agent kneading pipe is discharged from the discharge unit. The kneaded material is supplied into the foaming agent kneading conduit, and the kneaded material and the foaming agent are kneaded by the rotating stirring and mixing shaft, and the final kneaded material is discharged from the final kneaded material discharge unit. The in-pipe mixing device according to any one of claims 1 to 4, further comprising a foaming agent kneading means for kneading the obtained foaming agent. 7. The in-pipe mixing device according to any one of claims 1 to 6, wherein the mixing device is disposed laterally, and an agitator is provided below a discharge portion of the mixing device, and the kneaded material from the discharge portion is provided in the agitator. An in-pipe mixing apparatus configured to stir and feed the stirred kneaded material to a target location.