KR101876152B1 - Facilities for depositing lightweight aerated concrete and foam regeneration device - Google Patents

Abstract

The present invention provides a device for depositing lightweight aerated concrete, wherein the device for depositing the lightweight aerated concrete comprises: a lightweight concrete slurry mixing part; a foam generating part; a lightweight concrete slurry and bubble mixing part; and a depositing part including a depositing pipe, and a device for regenerating foam used therefor. The device for depositing lightweight aerated concrete of the present invention includes one further foam generating device in the depositing pipe to minimize the loss of the foam even when long-distance deposition of the lightweight aerated concrete is performed to maintain uniform quality of the lightweight aerated concrete, and improve the workability.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lightweight foamed concrete pouring apparatus and a bubble regenerating apparatus used therein,

The present invention relates to a lightweight foamed concrete pouring apparatus and a bubble regenerating apparatus used therein.

Lightweight foamed concrete is a secondary product of cement used in the bottom insulation layer of apartment house. Recently, the regulations for insulation of buildings have been strengthened, and studies are being actively carried out to improve the quality of lightweight foamed concrete.

In addition, recently, lightweight foamed concrete is filled to stabilize the abandoned mines of suspended mines, preventing ground collapse and sinkholes.

The conventional apparatus for producing lightweight foamed concrete for in-situ placement of FIG. 1 comprises a raw material charging portion 1, a slurry mixing portion 2, a bubble generating portion 3, a bubble and slurry mixing portion 4 and a foamed concrete installation portion 5 ).

The raw material input portion 1 is a device for inputting cement and lightweight additive, which is provided with a hopper (raw material input port) at the front end of the belt conveyor, filling the raw material in the hopper, So that the raw material filled in the hopper is conveyed on the conveyor belt.

The slurry mixing unit 2 is a functional unit in which a powdery material (cement), a lightweight additive, and mixed water (water) are simultaneously mixed and mixed. The slurry mixing unit 2 is generally composed of a structure in which an impeller is installed in a cylindrical- And can be divided into a vertical type mixer and a horizontal type mixer. In order to overcome such a problem, there is a case where two mixers are connected and used in some cases in order to overcome such a problem .

In addition, the bubble generator 3 is a functional unit for making the bubble forming agent into a bubble group. This is a bubble generator diluent reservoir for storing a diluted solution of about 2 to 4% of the bubble liquid, A compressor for generating compressed air, and a foaming machine for blowing compressed air into the diluted bubble liquid fed by the feeding pump to produce a bubble group. Bubble group plays the most important role in the production of lightweight foamed concrete, and the final quality of lightweight foamed concrete depends on the quality of the foamed group.

In general, the lightweight foamed concrete is put in place by mixing the blended raw material mixed with the bubble group generated from the bubble generating part (3) and the mixed part (2) again (4) (5).

Korean Patent Publication No. 10-2000-0055032

The inventors of the present invention have found that the conventional apparatus for manufacturing lightweight foamed concrete as described above causes a problem that a large amount of vesicles in a bubble group are produced until the concrete is poured to thereby lose important physical properties of lightweight foamed concrete.

In addition, since the main raw material of the foaming agent is a protein, when a large amount of foaming agent is used to solve the above problems, a large amount of protein film is formed between the raw material particles upon curing of the lightweight foamed concrete, .

Disclosure of the Invention The present inventors have made intensive efforts to solve the above problems, and have found a method of minimizing the extinction of air bubbles even in the long-distance installation of lightweight foamed concrete, thereby completing the present invention.

Therefore, it is an object of the present invention to provide a lightweight foamed concrete pouring apparatus capable of uniformly maintaining the quality of lightweight foamed concrete by minimizing the extinction of air bubbles even when the lightweight foamed concrete is cast over a long distance, and improving the workability.

It is another object of the present invention to provide a bubble regenerator used in the lightweight foamed concrete pouring apparatus.

According to an aspect of the present invention,

Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe,

And a bubble regenerator is further provided in the cast pipe.

In the lightweight foamed concrete pouring apparatus of the present invention, the bubble regenerating apparatus

A tubular body that is the same as or similar to the casting tube; A punched tube coupling portion formed at the end of the tubular body; One or more rotary vanes secured spirally inside the tubular body front end to impart spiral rotational motion to the stream of lightweight foamed concrete; And a microfiber which is fixed to an inner wall of a tubular body behind the rotary blades and regenerates bubbles.

The bubble regenerating apparatus may include: a tubular body that is the same as or similar to the inserted tube; At least one rotary vane fixed within the tubular body front end to impart rotational motion to the tubular body in accordance with the flow of lightweight foamed concrete; A microfiber fixed to an inner wall of a tubular body behind the rotary vane to regenerate bubbles; A tubular body receiving portion rotatably receiving the tubular body therein; A tube-shaped body-receiving portion formed at an end of the tubular body; And at least one bearing positioned between the tubular body and the tubular body receiving portion.

The rotary blade may have a spiral shape and is fixed to the inside of a tubular body front end portion.

The rotary vane may have the feature that the end of the captive feller is fixed to the inside of the tubular body front end in the form of a propeller.

The bubble regenerating apparatus may include: a tubular body that is the same as or similar to the inserted tube; A punched tube coupling portion formed at the end of the tubular body; At least two rotation axis supporting members provided at the inner center of the tubular body; And a rotation shaft accommodated in the rotation shaft support member,

At the tip of the rotary shaft, at least one rotary blade for rotating the rotary shaft according to the flow of the lightweight foamed concrete is provided, and the microfiber for regenerating the bubble is fixed to the outer peripheral surface of the rotary shaft.

Further, according to the present invention,

Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe, wherein the pouring pipe is installed in a pouring pipe of a lightweight foamed concrete pouring device,

A tubular body that is the same as or similar to the casting tube; A punched tube coupling portion formed at the end of the tubular body; One or more rotary vanes secured spirally inside the tubular body front end to impart spiral rotational motion to the stream of lightweight foamed concrete; And a microfibre fixed to an inner wall of a tubular body behind the rotary vane to regenerate bubbles.

Further, according to the present invention,

Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe, wherein the pouring pipe is installed in a pouring pipe of a lightweight foamed concrete pouring device,

A tubular body that is the same as or similar to the casting tube; At least one rotary vane fixed within the tubular body front end to impart rotational motion to the tubular body in accordance with the flow of lightweight foamed concrete; A microfiber fixed to an inner wall of a tubular body behind the rotary vane to regenerate bubbles; A tubular body receiving portion rotatably receiving the tubular body therein; A tube-shaped body-receiving portion formed at an end of the tubular body; And at least one bearing positioned between the tubular body and the tubular body receiving portion.

The rotary blade may have a spiral shape and is fixed to the inside of a tubular body front end portion.

The rotary vane may have the feature that the end of the propeller is fixed to the inside of the tubular body front end in the form of a propeller.

In addition,

Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe, wherein the pouring pipe is installed in a pouring pipe of a lightweight foamed concrete pouring device,

A tubular body that is the same as or similar to the casting tube; A punched tube coupling portion formed at the end of the tubular body; At least two rotation axis supporting members provided at the inner center of the tubular body; And a rotation shaft accommodated in the rotation shaft support member,

Wherein at least one rotating blade for rotating the rotating shaft in accordance with the flow of the lightweight foamed concrete is provided at the tip of the rotating shaft and the microfibers for regenerating the bubbles are fixed to the outer circumferential surface of the rotating shaft.

The lightweight foamed concrete pouring apparatus of the present invention further includes one or more foam regenerating apparatuses in the cast pipe, thereby minimizing the loss of bubbles even when the lightweight foamed concrete is laid down over a long distance, thereby uniformly maintaining the quality of the lightweight foamed concrete and improving the workability .

Further, the bubble regenerating apparatus of the present invention is included in a lightweight foamed concrete pouring apparatus to regenerate bubbles without further use of foaming agents, thereby uniformly maintaining the quality of lightweight foamed concrete, and improving the workability.

1 is a conceptual view showing a structure of a conventional lightweight foamed concrete pouring apparatus,
2 is a schematic view showing an embodiment of the lightweight foamed concrete pouring apparatus of the present invention,
3 and 4 are a cross-sectional view and a partial perspective view of an embodiment of a bubble regenerator used in the lightweight foamed concrete pouring apparatus of the present invention,
5 and 6 are a cross-sectional view and a partial perspective view of an embodiment of a bubble regenerator used in the lightweight foamed concrete pouring apparatus of the present invention,
7 is a perspective view of an embodiment of a bubble regenerator used in the lightweight foamed concrete pouring apparatus of the present invention,
8 and 9 are a cross-sectional view and a partial perspective view of an embodiment of a bubble regenerator used in the lightweight foamed concrete pouring apparatus of the present invention,
10 and 11 are a cross-sectional view and a partial perspective view of a tubular mixer installed in a casting tube of a lightweight foamed concrete pouring apparatus of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would unnecessarily obscure the gist of the present invention.

The following description and drawings illustrate specific embodiments in order that those skilled in the art can readily implement the described apparatus and method. Other embodiments may include other variations, both structurally and logically. Unless explicitly required, individual components and functions may be selected generally, and the order of the processes may vary. Portions and features of some embodiments may be included in other embodiments or may be replaced by other embodiments.

Generally, as shown in FIG. 1, the lightweight foamed concrete is cast by mixing the bubble group generated in the bubble generator 3 and the mixed raw material mixed in the mixing portion 2 with the mixed water (4) It is common to plow (5) to a target site (including a long distance of 50 m or more).

At this time, the distance from the poured part 5 to the place to be poured has a distance of 10 m for a short, 50 m or longer for a long time, and a longer distance for a high-level part of 20 or more. In such a long-distance pressurization, the foamed concrete composition mixed in the casting part 5 has a problem that the bubble group disappears due to the friction at the time of press-feeding and the target value of the designed lightweight foamed concrete is lost at the final casting place.

The poured portion 5 is a function portion for transferring the slurry mixed by the mixer of the mixing portion 4 to the installation space, and mainly uses a mono pump. The mono pump is equipped with a rubber in the steel case called a state, and an iron rotary body called a rotor is installed inside the state. And the slurry is transferred to the slurry while the rotor, which is the iron rotary body, rotates. Such conventional transfer pumps are susceptible to wear of the rotor or the rotor when the slurry is transferred. Therefore, when a gap is formed between the rotors and the stator, the amount of bubbles is increased due to the reduction of the conveying pressure. Therefore, there is a problem that the amount of conveyance at the time of high-level construction decreases and the weight of the product increases.

The lightweight foamed concrete pouring apparatus 100 of the present invention is provided with a bubble regenerator 160 in the middle of the foamed concrete pouring apparatus in order to prevent the loss of bubbles generated during the long distance pneumatic conveyance of the foamed concrete, It is possible to regenerate the bubbles and to maintain the amount of bubbles initially foamed and the state of bubbles until the final mixing.

As shown schematically in FIG. 2, the lightweight foamed concrete pouring apparatus 100 of the present invention comprises a lightweight concrete slurry mixing unit 110; A bubble generator 120; Lightweight concrete slurry and bubble mixer 130; And a putting part 140 including a putting tube 142,

The bubble regenerator 160 is further provided in the casting tube 142.

In the lightweight foam concrete pouring apparatus (100) of the present invention,

3 and 4, the bubble regenerator 160 includes a tubular body 10 that is the same as or similar to the cast tube 142; (16) formed at the end of the tubular body; At least one rotary vane (11) fixed spirally inside the tubular body front end to impart spiral rotational motion to the stream of lightweight foamed concrete; And a microfiber 12 fixed to an inner wall of a tubular body behind the rotary vane to regenerate bubbles.
In the present invention, "microfibers" perform the function of forming bubbles by contact with the foaming agent contained in the lightweight foamed concrete, so that they have a large surface area and have a strength enough to form bubbles upon contact with the lightweight concrete .
The bubble regenerator 160 has a spiral rotational motion imparted to the lightweight foamed concrete by at least one rotary vane 11 fixed spirally inside the tip of the tubular body 10, Lightweight foamed concrete is in contact with the microfibers 12 fixed to the tubular body 10 and operates as a mechanism for regenerating bubbles.

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5 and 7, the bubble regenerator 160 includes a tubular body 10 which is the same as or similar to the cast tube; At least one rotary vane (11) fixed inside the tubular body front end to impart rotational motion to the tubular body in accordance with the flow of lightweight foamed concrete; A microfiber (12) fixed to an inner wall of a tubular body behind the rotary blade to regenerate bubbles; A tubular body receiving portion 20 rotatably receiving the tubular body therein; (22) formed at both ends of the tubular body receiving part; And at least one bearing (B) positioned between the tubular body (10) and the tubular body receiving portion (20).

Since the bubble regenerator 160 is installed such that the tubular body 10 can be rotated inside the tubular body accommodating portion 20, Shaped body 10 is rotated by one or more rotary vanes 11 fixed to the inside of the body accommodating portion 10. At this time, the micro-fibers 12 fixed to the inner wall of the body accommodating portion 10 and the lightweight foamed concrete And acts as a mechanism to regenerate bubbles.

The rotary vane may have the feature that it is fixed to the inside of the tubular body end portion in a spiral shape, as shown in Figs.

In addition, as shown in FIG. 7, the rotary vane may have the feature that the end of the propeller is fixed to the inside of the tubular body front end in the form of a propeller.

8 and 9, the bubble regenerator 160 includes a tubular body 10 that is the same as or similar to the cast tube 142; (16) formed at the end of the tubular body; At least two rotation axis support members (14) provided at the inner center of the tubular body; And a rotary shaft (50) received in the rotary shaft support member (14)

At the tip of the rotary shaft, at least one rotary vane 52 for rotating the rotary shaft according to the flow of the lightweight foamed concrete is provided, and the microfiber 54 for regenerating bubbles is fixed to the outer peripheral surface of the rotary shaft.

The rotary shaft support member 14 may be fixed to the inner wall of the tubular body 10 through a support rod 15.

In the bubble regenerator 160 of the present invention, the cast pipe coupling portion 16 may be in the form of a flange, but not limited thereto, and may be formed in a shape known in the art.

In the bubble regenerator 160 of the present invention, one or more rotary vanes 11, which are spirally fixed in the inside of the tubular body front end, are arranged such that, as shown in Figs. 4 and 6, As shown in FIG. By this step difference, the lightweight foamed concrete can be mixed well and can make better contact with the microfiber.

In the lightweight foamed concrete pouring apparatus (100) of the present invention, a tubular mixer (200) for re-mixing lightweight foamed concrete in which bubbles are regenerated is further provided between the bubble regenerator (160) Lt; / RTI >

10 and 11, the tubular mixer 200 includes a tubular body 210 that is the same as or similar to a cast tube; A stub joint 230 formed at the end of the tubular body; And at least one rotary vane (220) spirally secured within the tubular body to impart a spiral rotational movement to the stream of lightweight foamed concrete, wherein the rotary vane (220) As shown in FIG.

The tubular mixer 200 functions to mix bubbles reproduced by the bubble regenerator 160 into the entire lightweight foamed concrete.

In addition,

As shown in Figs. 3 and 4, a tubular body 10 which is the same as or similar to the cast tube 142; (16) formed at the end of the tubular body; At least one rotary vane (11) fixed spirally inside the tubular body front end to impart spiral rotational motion to the stream of lightweight foamed concrete; And a microfibers (12) fixed to an inner wall of a tubular body behind the rotary blades to regenerate bubbles.

In addition,

As shown in Figs. 5 to 7, a tubular body 10 which is the same as or similar to a casting tube; At least one rotary vane (11) fixed inside the tubular body front end to impart rotational motion to the tubular body in accordance with the flow of lightweight foamed concrete; A microfiber (12) fixed to an inner wall of a tubular body behind the rotary blade to regenerate bubbles; A tubular body receiving portion 20 rotatably receiving the tubular body therein; (22) formed at both ends of the tubular body receiving part; And at least one bearing (B) positioned between the tubular body (10) and the tubular body receiving portion (20).

The rotary vane may have the feature that it is fixed to the inside of the tubular body end portion in a spiral shape, as shown in Figs.

In addition, as shown in FIG. 7, the rotary vane may have the feature that the end of the propeller is fixed to the inside of the tubular body front end in the form of a propeller.

In addition,

As shown in Figs. 8 and 9, a tubular body 10 which is the same as or similar to the cast tube 142; (16) formed at the end of the tubular body; At least two rotation axis support members (14) provided at the inner center of the tubular body; And a rotary shaft (50) received in the rotary shaft support member (14)

The bubble generator (50) has a structure in which at least one rotary vane (52) for rotating the rotary shaft in accordance with the flow of the lightweight foamed concrete is provided at the tip of the rotary shaft, and a microfiber 54 for regenerating bubbles is fixed to the outer peripheral surface of the rotary shaft 160).

Since the above-described contents of the lightweight foamed concrete pouring apparatus 100 can be applied to the foam regenerating apparatuses 160 of the present invention, duplicate descriptions will be omitted.

Construction using the lightweight foamed concrete pouring apparatus can be carried out in the following steps:

(a) weighing and dosing of raw materials for weighing and inputting a desired amount of raw material for foamed concrete;

(b) introducing a predetermined amount of mixed water and quantitatively mixing the powder and the water for slurrying the powdery raw material introduced from the step (a);

(c) a bubble group generating step of foaming the diluted bubble diluent mixed with the raw foaming agent liquid and mixed water by using compressed air;

(d) mixing the foamed concrete slurry and the bubble group produced by the steps (b) and (c); And

(e) pumping the bubble mixing slurry of step (d) at a uniform quality

In the lightweight foamed concrete pouring apparatus and bubble regenerating apparatus of the present invention, a known configuration may be employed as it is for a configuration not particularly limited in the above.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, it is intended that the appended claims cover all such modifications and variations as fall within the true spirit of the invention.

10: tubular body 11: rotary wing
12, 54: microfibers 13, 24: bearing housing groove
14: rotating shaft supporting part 15: rotating shaft supporting part supporting rod
16: putting tube fitting part 20: tubular body receiving part
22: air bubble regenerator coupling portion 30: bearing
50: rotating shaft 52: rotating blade
100: Lightweight foam concrete pouring device
110: Lightweight concrete slurry mixing part
120: bubble generator
130: Lightweight concrete slurry and bubble mixing part
140: Installation part 142: Installed pipe
144: Pouring nozzle 150: Pump
180: Flow meter controller 190: Flow meter
200: tubular mixer 210: tubular body
220: rotation blade 230:

Claims (14)

Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe,
The bubble regenerator is further provided in the casting tube,
The bubble regenerator is provided with a rotary blade for obtaining a rotational power from a stream of lightweight foamed concrete to which a spiral rotational motion is imparted or transferred to a stream of lightweight foamed concrete to be conveyed; And a microfiber contacting with the lightweight foamed concrete conveyed while being rotated by being connected with a rotary blade which contacts with or is contacted with the lightweight foamed concrete which is rotated and spirally rotated by the rotary blades for imparting the rotary motion, A lightweight foam concrete pouring device characterized by. The method according to claim 1,
Wherein the bubble regenerating device further comprises a tubular body that is the same as or similar to the putting tube and a tubular tube joint formed at the end of the tubular body;
Wherein the rotary vane is spirally secured within a tubular body front end to impart spiral rotational motion to the flow of lightweight foamed concrete;
Wherein the microfibers are fixed to an inner wall of a tubular body behind the rotary vane to regenerate the air bubbles. The method according to claim 1,
The bubble regenerating apparatus may include: a tubular body that is the same as or similar to the inserted tube; A tube-shaped body-receiving portion formed at an end of the tubular body; A tubular body receiving portion rotatably receiving the tubular body therein; And at least one bearing positioned between the tubular body and the tubular body receiving portion;
Wherein the rotary vane is fixed inside the tubular body so as to impart rotational motion to the tubular body in accordance with the flow of the lightweight foamed concrete;
Wherein the microfibers are fixed to an inner wall of a tubular body behind the rotary vane to regenerate the air bubbles. The method of claim 3,
Wherein the rotary vane is fixed in a spiral shape inside a tubular body front end portion. The method of claim 3,
Wherein the rotary blades are propeller-shaped and the end of the propeller is fixed to the inside of the tubular body front end portion. 6. The method according to any one of claims 2 to 5,
Wherein the tubular pipe connection portion is in the form of a flange. The method according to claim 2 or 4,
Wherein the at least one rotary vane spirally fixed within the tubular body front end is independently formed so that each vane has a step difference from each other. The method according to claim 1,
The tubular mixer further comprises a tubular mixer for mixing the lightweight foamed concrete having passed through the bubble regenerator between the bubble regenerator installed in the tubular tube and the putting nozzle, ,
Wherein the tubular mixer comprises: a tubular body identical or similar to a casting tube; A punched tube coupling portion formed at the end of the tubular body; And one or more rotary vanes secured spirally within the tubular body to impart spiral rotational motion to the stream of lightweight foamed concrete,
Wherein the rotary blades are independently formed such that each of the blades has a step difference from each other. Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe, wherein the pouring pipe is installed in a pouring pipe of a lightweight foamed concrete pouring device,
A tubular body that is the same as or similar to the casting tube; A punched tube coupling portion formed at the end of the tubular body; One or more rotary vanes secured spirally inside the tubular body front end to impart spiral rotational motion to the stream of lightweight foamed concrete; And a microfibre fixed to an inner wall of a tubular body behind the rotary blade to regenerate bubbles. Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe, wherein the pouring pipe is installed in a pouring pipe of a lightweight foamed concrete pouring device,
A tubular body that is the same as or similar to the casting tube; At least one rotary vane fixed within the tubular body front end to impart rotational motion to the tubular body in accordance with the flow of lightweight foamed concrete; A microfiber fixed to an inner wall of a tubular body behind the rotary vane to regenerate bubbles; A tubular body receiving portion rotatably receiving the tubular body therein; A tube-shaped body-receiving portion formed at an end of the tubular body; And at least one bearing positioned between the tubular body and the tubular body receiving portion. 11. The method of claim 10,
Wherein the rotary blades are fixed in a spiral shape inside a tubular body front end portion. 11. The method of claim 10,
Wherein the rotary blade is a propeller and the end of the propeller is fixed to the inside of the tubular body. The method according to claim 9 or 11,
Wherein at least one rotary vane fixed spirally inside the tubular body front end is independently formed so that each of the vanes has a step difference from each other. Lightweight concrete slurry mixing part; A bubble generator; Lightweight concrete slurry and bubble mixer; And a pouring portion including a pouring pipe, wherein the pouring pipe is installed in a pouring pipe of a lightweight foamed concrete pouring device,
A tubular body that is the same as or similar to the casting tube; A punched tube coupling portion formed at the end of the tubular body; At least two rotation axis supporting members provided at the inner center of the tubular body; And a rotation shaft accommodated in the rotation shaft support member,
Wherein at least one rotating blade for rotating the rotating shaft in accordance with the flow of the lightweight foamed concrete is provided at the tip of the rotating shaft, and the microfibers for regenerating the bubbles are fixed to the outer circumferential surface of the rotating shaft.

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