JPH053499B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to improvements in concrete washing equipment.

<Prior Art> The applicant proposed the following concrete washing device in the application of Japanese Patent Publication No. 59-026634.

In other words, a suction section is provided in which a plurality of suction nozzles are arranged in parallel in the width direction of a main body with rollers installed at the front and rear, and an adjustment plate and a presser plate are provided on the front side of the suction section to form a suction space. This concrete washing device is characterized in that an air circulation hole is provided in the concrete cleaning device so that the amount of external air sucked into the suction nozzle can be adjusted, thereby making it possible to adjust the suction force.

In this way, in the conventional device, a suction space is formed by providing an adjustment plate and a presser plate in front of the suction part, and an air circulation hole is provided in the adjustment plate, making it possible to adjust the amount of external air sucked into the suction nozzle. In addition, by making the adjustment plate vertically movable and the pressing plate tiltable, the structure prevents the aggregate from being chewed when sucked from the mortar.

<Problems to be Solved by the Invention> However, when the above device was actually used, it was found that this configuration could not necessarily eliminate the problem of chewing of aggregate. In addition, since the water was sprayed directly from the spray pipe, the water pressure was applied directly to the concrete surface, causing the surface to become rough, and a large amount of water was also required.

<Means for Solving the Problems> The present invention aims to provide a concrete washing device that eliminates the above-mentioned disadvantages of conventional devices.In particular, the present invention improves the suction section to prevent chewing of aggregate. It is configured as follows.

In other words, this is a concrete washing device in which a roller is rotatably fixed to the front and rear ends between a pair of side plates to support it, and a suction part is installed in the front part between the two rollers, and a water spray part is installed in the rear part in the gap. The concrete is characterized in that a comb-shaped horizontally uneven board and a comb-like vertically uneven board are arranged orthogonally to each other in front of the suction port of the suction part, and the concave and convex parts of the both uneven boards are provided facing each other. It is a washing device.

<Examples> Examples of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the washing device A rotatably supports rollers 12, 12 at the front and rear ends between a pair of left and right side plates 11, 11. A suction part 13 is provided in the front part between both rollers 12, 12, and a water spray part 15 is provided with a gap part 14 in the rear part.

The suction section 13 is formed by connecting an air adjustment chamber 16 and an air collection chamber 17 with four branch pipes 171, as shown in FIG. In the upper part between the side plates 11 and 11,
A gate-shaped handle 18 is installed. A suction pipe 19 is installed obliquely upward from the top surface of the air collection chamber 17, and a suction pump (both not shown) outside the machine is connected thereto via the suction pipe. On the front surface of the inlet 20 of the air adjustment chamber 16, a comb-shaped horizontally uneven plate 21 and a comb-like vertically uneven plate 22 as shown in FIGS. 4 and 5 are provided. The concave portion 23 is made to face the other convex portion 24.

The horizontal uneven board 21 is the bottom plate 161 of the air adjustment chamber 16.
It is formed by notching the tip of the comb into a comb shape. Vertical uneven board 22
is a horizontal groove 2 made in the side plates 11, 11 above the inlet 20.
5 is installed vertically using the thumbscrew 26 inserted through it. Butterfly screw 2
The longitudinal position of 6 can be adjusted within the range within the lateral groove 25.
If the thumbscrew 26 is placed at the rear end as shown in Figure 2,
The vertically uneven plate 22 is connected to the horizontally uneven plate 21 as shown in FIG.
It comes to the tip of the convex part 24. When the thumb screw 26 is moved to the front end, that is, to the left and right in FIG. 2, the vertically uneven plate 22 becomes the inner end of the recess 23 of the horizontally uneven plate 21, as shown in FIG.

Due to the positional relationship between the two uneven plates 21 and 22,
At the same time, the suction power can be adjusted. Prevents chewing of aggregates such as pebbles. That is, when the vertical uneven board 22 is placed at the rear, outside air flows directly into the air adjustment chamber 16 from the recesses 23 of the horizontal uneven board 21 as shown by the arrows in FIG. 4, so a relatively large amount of outside air is sucked in. . In addition, a vertically uneven plate 22 is placed in the center of the concave portion 23 of the horizontally uneven plate 21.
Since the convex portion 24 is located, large aggregates will not be suctioned against this convex portion. When the vertical uneven board 22 is moved forward,
The outside air is supplied to the horizontally uneven plate 21 as shown by the arrow in Figure 5.
After flowing in from the recess 23 of the vertically uneven plate 22, the air turns 90 degrees and is sucked into the air adjustment chamber 16 through the recess 23 of the vertically uneven plate 22, so resistance is generated and the intake amount is reduced compared to when it directly enters. Moreover, the aggregate is horizontally uneven board 2
Only fine aggregate can flow in through the gap between the concave portion 23 of 1 and the convex portion 24 of the vertically uneven plate 22, so only fine aggregate is sucked.

The water sprinkling unit 15 consists of a box 28 with an open top and divided into two chambers by a central wall 27 as shown in the first and second figures. The rear chamber 29 is a water storage chamber 30, above which a water supply pipe 31 is arranged, and a plurality of small holes are formed along the lower side of the central wall 27 to serve as water sprinkling holes 32. Front chamber 3
3 is an auxiliary chamber 34, the bottom plate 341 of which will be finished as will be described later and becomes a part that performs this function. A vertical groove 351 is formed in the side wall of the preliminary chamber 34 toward the outer edge, and a shaft 361 installed between the side plates 11 and 11 is passed through the vertical groove 351 to allow the box 28 to be installed so as to be freely tiltable. The shaft 361 is vertically adjustable within the vertical groove 351.

The height h of the front wall 35 of the preliminary chamber 34 is set lower than the height H of the rear wall 36 of the water storage chamber 30. In addition, water storage chamber 30
A vertical groove 37 is also made near the outer edge of the side wall of the box body 28.
Reverse the front and back as shown in Figure 3 and insert this vertical groove 37.
The shaft 361 can be passed through the shaft 361.

When the front and back are reversed, the rear wall 36 of the water storage chamber 30 forms a boundary with the gap 14 between the air adjustment chamber 16 and the rear wall 36 of the water storage chamber 30, as shown in FIG. By reversing in this way, the height of the border with the cavity 14 changes, and the suction force of the suction part 13 changes as described later.

Gap section 1 between air adjustment chamber 16 and water sprinkling section 15
4 becomes a negative pressure when the suction part 13 is operated, and serves to suck up mortar that has become fluid due to water sprinkling.

Next, how to use the washing device A will be explained. First, small pieces of granite, marble, and other aggregates are added to a mortar mixture of cement and sand in a ratio of approximately 1:3, water is added, and the mixture is poured. If you run it,
The washing operation using this device A begins. Watering section 15
Flow water from the holder, and while suctioning with the suction part 13, move the apparatus to the left in the direction shown in Figure A-2. This movement procedure is similar to cleaning the floor with a vacuum cleaner. As the washing device A moves, water flows onto the concrete surface, and at the same time, suction force is applied to the concrete surface by the suction unit 13. When the suction force is applied, the gap 14 between the suction section 13 and the water sprinkling section 15 becomes a negative pressure and functions as a suction space. The sprayed water turns the unsolidified concrete surface into a fluid state. When the mortar becomes fluid, the negative pressure in the suction space acts, so the mortar moves together with the water to the suction space, where it is sucked up.
The aggregate is exposed. The exposed aggregate is lightly pushed by the bottom plate of the water spraying section 15 and the rollers 12, 12, and is submerged and stabilized.

Since the suction unit 13 is suctioned by the plurality of branch pipes 171, suction force is generated uniformly over the entire width direction.

As described above, there are a pair of comb-shaped uneven plates 21 and 22 on the front surface of the suction port 20 of the suction unit 13, and the suction force is adjusted by moving the vertical uneven plate 22 back and forth. Moreover, the size of the aggregate to be sucked can be adjusted by this operation.

Water is supplied from the water sprinkling pipe 31 to the water storage chamber 30 of the water sprinkling section 15, and is allowed to flow from the water sprinkling hole 32 onto the concrete surface. After the water once enters the water storage chamber 30, it naturally falls from the water sprinkling hole 32. Since water is supplied gradually in this way, the concrete surface is not roughened.
And only a small amount is required.

The sprayed water is sucked up by the negative pressure in the cavity 14 and sucked into the suction part 13 .

Moreover, by reversing the front and back of the water spraying part 15,
You can change the suction power. That is, water storage chamber 3
When 0 is after, the low front wall 35 of the preliminary chamber 34
Since the rear of the cavity 14 is partitioned by the front wall 35, the outside air flowing in from diagonally above and behind is relatively rarely obstructed by the front wall 35.
is low), a large amount of outside air flows into the cavity 14. As a result, the amount of outside air flowing in increases, but the strength of the suction force decreases. If the front and back of the water spraying part 15 are reversed and the high wall 36 of the water storage chamber 30 is used as the rear wall of the gap part 14 as shown in FIG. Since the flow is more obstructed by the low wall 35, the amount of inflow decreases, and conversely the strength of the suction force increases.

<Effects of the Invention> As explained above, the present invention improves the concrete washing device by specifically providing a pair of uneven plates at the suction port of the suction section. This improvement solves the problem of the conventional device, which chews up the aggregate in the concrete during suction, and has the great effect of significantly improving the efficiency of concrete washing work.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional side view of the same, FIG. 3 is an explanatory view showing a water sprinkling section, and FIGS. 4 and 5 are explanatory views showing an uneven plate. 11...Side plate, 12...Roller, 13...Suction part, 14...Gap part, 15...Water spray part, 20...
Inlet port, 21... Horizontal uneven plate, 22... Vertical uneven plate,
23... Concave portion, 24... Convex portion.

Claims (1)

[Claims] 1 Concrete made by rotatably fixing rollers to the front and rear ends between a pair of side plates, supporting them, and constructing a suction section at the front between both rollers and a water spray section with a gap at the rear. In the washing device,
A concrete washing device characterized in that a comb-shaped horizontally uneven board and a comb-like vertically uneven board are arranged perpendicularly to each other in front of the suction port of the suction part, and the concave and convex parts of the both uneven boards are provided facing each other. .