JPH0575563B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a perlite soil mixing device and a perlite soil mixing method that mix perlite and soil efficiently in a short time.

(b) Conventional technology Conventionally, when trying to mix perlite with earth and sand, if a large amount of cement was mixed in at once, the perlite would float on top of the earth and sand because the specific gravity of cement was around 0.06, which was smaller than the earth and sand. Since it was impossible to mix it uniformly, the only way was to mix it in small amounts.

(c) Problems to be solved by the invention However, with this method, it takes time and effort to mix uniformly, and the efficiency of the mixing operation is poor. Furthermore, when a mixture of perlite and earth and sand is used as an embankment material, there is a risk that the perlite and earth and sand that have been mixed together may separate.

In order to solve the above-mentioned problems, the present invention provides a perlite and sand mixture that can disperse and supply perlite and earth and sand evenly, mix efficiently in a short time, and prevent separation of pearlite and earth and sand even when embanking. The purpose of the present invention is to provide an apparatus and a perlite soil mixing method.

(d) Means for solving the problem That is, the invention of the perlite soil mixing device of the present invention has a cement conveying device 7, and the perlite conveying device 6 is connected to the cement conveying device 7. Further, a powder mixing device 10 is provided connected to the pearlite conveying device 6, and a powder forced stirring means 10e is further provided in a casing 10f of the powder mixing device 1. It is also possible to configure the powder force stirring means 10e to be rotatably provided on the inner wall of the casing 10f so as to be movable from above to below. Further, a dispersion supplying device 9 is provided between the pearlite conveying device 6 and the powder mixing device 10 so that both devices 6 and 10 are connected. Furthermore, the powder supply means 9 of the dispersion supply device 9
The powder supply directions of a and 9b are configured to face the inner wall side of the casing 10f.

Further, in the invention of the perlite soil mixing method, when perlite 11 and soil 13 are mixed using the perlite soil mixing device 1, the perlite 11 is transported using the perlite transport device 6, and the perlite 11 is transported using the perlite transport device 6, and Perlite 11 to cement 12
is supplied by the cement conveying device 7 to prepare a pearlite cement mixture 16, and the pearlite cement mixture 16 and earth and sand 13 are mixed by the forced powder stirring means 10e in the powder mixing device 10 to form the pearlite cement mixture 16. It is configured to knead while moving the earth and sand 13 downward.

Note that the numbers in parentheses are appropriate to indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings. The same applies to the column "(e) Effect" below.

(e) Effect With the above configuration, cement 12 is evenly mixed into pearlite 11, which has a small specific gravity, and soil 13
The powder stirring means 10e in the powder mixing device 10 forcibly pushes the pearlite 11, which tends to float on top of the earth and sand 13 due to its low specific gravity, downward, thereby suppressing the separation of the pearlite 11.
and earth and sand 13 are mixed uniformly.

(f) Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a front view of a perlite soil mixing device to which an embodiment of the present invention is applied, and FIG. 2 is a side view of FIG. 1.

The perlite soil mixing device 1 is shown in Figures 1 and 2.
As shown in the figure, a pearlite hopper 2, a cement hopper 3, an earth and sand hopper, a screw conveyor for pearlite 6, a screw conveyor for cement 7,
It is composed of a dispersion supply device 9 and a powder mixing device 10.

Pearlite hopper 2 and cement hopper 3 are
Both are formed in the shape of a hollow inverted cone, with the upper and lower ends open. Lower end openings 2a and 3a of the pearlite hopper 2 and the cement hopper 3 are connected to a cylindrical pearlite screw conveyor 6 and a cylindrical cement screw conveyor 7, respectively.
Further, a discharge port 7a at the lower part of the screw conveyor 7 for cement is installed in a passage 6a provided in the middle upper part of the screw conveyor 6 for perlite so that the axial directions of both screw conveyors 6 and 7 intersect. . In addition, screws 6b and 7b are installed in each screw conveyor 6 and 7,
Each screw 6b, 7b can be rotated at arbitrary and independent speeds by a drive motor 6d, 7c provided at one end thereof.

As shown in FIG. 2, the pearlite screw conveyor 6 has a discharge port 6c at the lower right end in the figure, and is connected to a powder mixing device 10 via a dispersion supply device 9 connected to the discharge port 6c. be done. The distributed supply device 9 is formed into a hollow conical shape, and, as shown in FIG. 1, is provided with a shutter 9b that divides the internal space into two passages 9a, 9a. In addition, passage 9a,
Shooter 9 constituting powder supply means together with 9a
b has slopes 9c, 9c formed on the left and right sides in FIG. 1, and the angle θ of the slopes 9c, 9c with respect to the vertical direction can be changed arbitrarily.

Further, the earth and sand hopper 5 is formed in a cylindrical or box shape, and earth and sand 13 is stored therein, and an opening/closing device 5b is attached to the lower end opening 5a.
The earth and sand hopper 5 is connected to the powder mixing device 10 via an earth and sand passage 10a connected to the lower end opening 5a.

As shown in FIGS. 1 and 2, the powder mixing device 10 has a casing 10f shaped like a gourd-shaped box in cross section, and the dispersion feeding device 9 and The earth and sand passage 10a is connected, and the lower part has an opening 10b in the central recess.
and an opening/closing device 10c. The opening/closing device 10c includes an opening/closing section 10g and a drive section 10h directly connected thereto.
By driving the driving part 10h and rotating the opening/closing part 10g in the directions of arrows C and D in FIG. 1, the powder in the powder mixing device 10 can be held or dropped.

Furthermore, inside the powder mixing device 10, two rotating shafts 10d are installed with their axial directions parallel to the left-right direction in FIG. 2, and a large number of stirring blades 10e are installed radially on the rotating shaft 10d. It is being Further, the rotating shaft 10d rotates at an arbitrary speed, and the stirring blade 10
You can rotate e.

Since the perlite earth and sand mixing apparatus 1 has the above-described configuration, when mixing earth and sand with perlite using the perlite earth and sand mixing apparatus 1, first, the rotating shafts 10d, 10d inside the powder mixing apparatus 10 are started, and the stirring blades 10e are turned on. , 10e in the directions of arrows A and B, which are opposite directions.

Next, the opening/closing device 5b at the bottom of the earth and sand hopper 5 is opened, and the earth and sand 13 in the earth and sand hopper 5 is removed from the earth and sand passage 10a.
The earth and sand 13 are supplied into the powder mixing device 10 through
The stirring blades 10e, 1 rotate in opposite directions to each other.
Stir evenly at 0e. In this embodiment, the powder mixing device 1 is used as a means for supplying the earth and sand 13.
Although the earth and sand hopper 5 fixedly installed on the upper part of the powder mixing device 10 is used, any means may be used as long as it can supply the earth and sand 13 into the powder mixing device 10. For example, it is also possible to provide an openable and closable lid on the information opening of the casing 10f, open the lid during stirring work, and supply the earth and sand 13 using a belt conveyor or the like.

Subsequently, the screws 6b and 7b inside the screw conveyor 6 for pearlite and the screw conveyor 7 for cement are started to rotate. At this time, pearlite 11 supplied from pearlite hopper 2
and cement 12 supplied from cement hopper 3
The rotational speed of the screws 6b and 7b in the screw conveyors 6 and 7, that is, the conveyance speed of the pearlite 11 and cement 12 as powder, is set according to the mixing amount and mixing ratio.

Next, perlite 11 and cement 12,
The powder is supplied into the pearlite hopper 2 and cement hopper 3 from the hopper upper end openings 2b and 3b, respectively. Pearlite 11 supplied into pearlite hopper 2
After falling into the pearlite screw conveyor 6 through the lower end opening 2a, it is pressed by the rotating screw 6b and conveyed to the right in FIG. On the other hand, the cement 12 supplied into the cement hopper 3 falls into the cement screw conveyor 7 through the lower end opening 3a, and is then conveyed to the left in FIG. 1 by being pressed by the rotating screw 7b. The cement 12 that has reached the left end in FIG. 1 within the cement screw conveyor 7 falls into the perlite screw conveyor 6 through the discharge port 7a, but at this time, the cement 12
It collides with the pearlite 11 being conveyed from left to right in FIG. 2 within the screw conveyor 6 for pearlite. That is, the cement 12 is forcibly supplied from above to the pearlite 11 that is conveyed while spirally moving inside the screw conveyor 6 for pearlite by the pressing force of the screw 7b in the screw conveyor 7 for cement. . Then, since the cement has a higher specific gravity than the pearlite 11, it tries to move downward and is forcibly stirred and mixed with the pearlite uniformly by the rotational pressing force of the screw 6b in the screw conveyor 6 for pearlite. .

In this way, the pearlite 11 and the cement 12 are sufficiently mixed in the pearlite screw conveyor 6 and then supplied into the dispersion supply device 9 through the discharge port 6c. The pearlite cement mixture 16 supplied into the dispersion supply device 9 is divided into left and right sides in FIG. That is, it is supplied between the inner wall of the side surface of the casing 10f and the stirring blade 10e. At this time, depending on the supply amount and mixing ratio of the pearlite cement mixture 16,
The inclined surface 9 of the shooter 9b is arranged so that the powder can be supplied into the powder mixing device 10 at a position where the stirring efficiency is maximum.
Set the slope of c and 9c (that is, the magnitude of angle θ). Here, “the position where the stirring efficiency is maximum” is
This can be obtained empirically by changing the slopes of the slopes 9c and 9c under the same conditions and stirring the mixture several times and observing the stirring state.

In this way, the pearlite cement mixture 16 supplied into the powder mixing device 10 is
Sediment 13 and stirring blade 1 that are already in a stirring state in 0
The mixture is stirred and mixed uniformly through 0e. At this time, the rotation direction of the stirring blade 10e is as described above.
As shown by arrows A and B in FIG. 1, the stirring blade 10e on the left side of the figure is oriented counterclockwise, and the stirring blade 10e on the right side of the figure is oriented clockwise. That is, the left and right stirring blades 10e are rotating downward on both the left and right sides in the figure.
Therefore, the pearlite cement mixture 16 supplied to both left and right sides in the figure in the powder mixing device 10 is as follows.
Since the stirring blade 10e presses against the inner wall of the casing 10f and forces it downward together with the earth and sand 13, pearlite 1 tends to float on top of the earth and sand 13 due to its low specific gravity in normal mixing.
1 can be dispersed evenly throughout the earth and sand 13 and mixed efficiently and uniformly with the earth and sand 13.

Once the perlite cement mixture 16 and the earth and sand 13 are mixed sufficiently uniformly in the powder mixing device 10,
The drive unit 10h at the lower part of the casing 10f of the powder mixing device 10 is driven to open the opening 10g, and the mixture of perlite 11, cement 12, and earth and sand 13 is dropped through the opening 10b and taken out.

When the thus prepared mixture of perlite 11, cement 12, and earth and sand 13 is used as an embankment material, cement 12 hardens together with perlite 11 and earth and sand 13 due to water absorption, producing a pearlite mortar with uniform properties.

(g) Effects of the Invention As explained above, the present invention includes a cement conveying device such as the screw conveyor 7 for cement, and connects a perlite conveying device such as the screw conveyor 6 for perlite to the cement conveying device. Further, the powder mixing device 10 is provided in connection with the perlite conveying device, and furthermore, a powder forced stirring means such as a rotatable stirring blade 10e is provided in the casing 10f of the powder mixing device 10. As a result, a large amount of perlite 11 with a small specific gravity and a small amount of cement 12 are uniformly mixed at the same time and supplied to the earth and sand 13, thereby making it possible to mix efficiently in a short time. , useful for shortening and labor saving of mixing work.

In addition, if the powder forced stirring means 10e is rotatably provided on the inner wall of the casing 10f so that it can move from above to below, the pearlite cement mixture 16 is forced together with the earth and sand 13 in a manner that it is pressed against the inner wall of the casing 10f. Since the perlite 11 and cement 12 are pushed downward, the perlite 11 and cement 12 can be mixed uniformly throughout the earth and sand 13.

In addition, a pearlite conveying device and a powder mixing device 10
When a dispersion supply device 9 is provided between the two to connect the two, the pearlite cement mixture 1
6 can be supplied to the earth and sand 13 in an evenly dispersed form, so the range of application of the perlite earth and sand mixing device 1 is expanded.

Further, powder supply means 9a, 9 of the dispersion supply device 9
If the powder supply direction b is configured to face the inner wall side of the casing 10f, it becomes possible to uniformly mix perlite 11 and cement 12 throughout the earth and sand 13 in a wide range of applications.

In addition, when mixing perlite 11 and earth and sand 13 using the perlite earth and sand mixing device 1, the perlite 11 is mixed with the perlite screw conveyor 6.
A pearlite cement mixture 16 is prepared by supplying cement 12 to the pearlite 11 using a cement conveying device such as a screw conveyor 7 for cement, and the pearlite cement mixture 16 is and earth and sand 13 are kneaded while moving the pearlite cement mixture 16 below the earth and sand 13 by a powder force stirring means such as a rotatable stirring blade 10e in the powder mixing device 10. Not only can perlite 11, cement 12, and earth and sand 13 be mixed efficiently and uniformly, but even if the mixture is used as embankment, the mixed cement 12 becomes perlite 1.
1. Since it hardens together with the earth and sand 13, separation does not occur and reliable construction is possible.

[Brief explanation of drawings]

FIG. 1 is a front view of a perlite soil mixing device to which an embodiment of the present invention is applied, and FIG. 2 is a side view of FIG. 1. DESCRIPTION OF SYMBOLS 1...Pearlite earth and sand mixing device, 6...Pearlite transport device (screw conveyor for perlite), 7...Cement transport device (screw conveyor for cement), 9...Dispersion supply device, 9a...
...Powder supply means (passage), 9b...Powder supply means (shutter), 10...Powder mixing device, 10e...
...Powder forced stirring means (stirring blade), 10f...Casing, 11...Perlite, 12...Cement, 13...Earth and sand, 16...Pearlite cement mixture.

Claims (1)

[Scope of Claims] 1. A perlite soil mixing device for mixing perlite and earth and sand, comprising a cement conveying device, the perlite conveying device being connected to the cement conveying device, and a powder mixing device configured to mix perlite and soil. A perlite soil mixing device, which is connected to a conveyance device, and further includes a powder forced stirring means in a casing of the powder mixing device. 2. The perlite earth and sand mixing device according to claim 1, wherein the powder force stirring means is rotatably provided on the inner wall of the casing so as to be movable from above to below. 3. The perlite earth and sand mixing device according to claim 1 or 2, wherein a dispersion supply device is provided between the perlite conveying device and the powder mixing device so as to connect the two. 4. The perlite soil mixing device according to claim 2, wherein the powder feeding method of the powder feeding means of the dispersion feeding device is configured to face the inner wall of the casing. 5. When mixing perlite and earth and sand using the perlite soil mixing device according to claim 1, the perlite is transported using a perlite transport device, and the cement is transferred to the perlite by the cement transport device. to prepare a perlite cement mixture, and the perlite cement mixture and earth and sand are kneaded while moving the perlite cement mixture below the earth and sand by a forced powder stirring means in a powder mixing device. Perlite soil mixing method.