JP2561194B2 - Vacuum mouse - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum mouse, and more particularly to a vacuum mouse suitable for use in vacuuming concrete surfaces at construction sites.

[0002]

2. Description of the Related Art When it is necessary to vacuum clean a concrete surface or an asphalt surface at a construction site or the like, suction cleaning is performed by a vacuum mouse connected to a vacuum vehicle. This type of vacuum mouse has a structure that is an expansion of the vacuum mouse of a household vacuum cleaner.It forms a closed space with the floor surface by the mouse housing, and applies negative suction pressure to the mouse housing to cause dust from the suction port. Is sucked in and exhausted.

[0003]

However, in the conventional vacuum mouth, the suction efficiency is very poor and it is not possible to perform a sufficient cleaning process when trying to suck in water-like dust generated by chipping work of concrete. There was a flaw that I could not do. In particular, dust that is wet and adhering to the floor surface has a strong adhesive force, and it has been difficult to reliably suck and discharge them. Increasing the suction negative pressure by using a large compressor is effective in the case of suspended dust, etc., but the problem that water-containing deposits cannot be sucked out and sufficient suction capacity cannot be obtained was there.

In view of the above-mentioned conventional problems, an object of the present invention is to provide a vacuum mouse capable of reducing the adhesive force of dust and the like and accumulating them in a suction port to surely discharge them. To do.

[0005]

In order to achieve the above object, a vacuum mouse according to the present invention has a negative pressure suction port which communicates with an air intake device formed in an upper surface of a mouse housing having a suction port which contacts a floor surface. In the above Bakuume mouse, at least the rear edge of the mouse housing is provided with a fluid injection nozzle whose injection direction is directed to the lower front, and the negative pressure suction port is provided with a swirling screw or a guide blade. Is. In this case,
The fluid injection nozzle may be formed by slitting a pipe, or a structure in which a plurality of nozzle units are attached to the pipe. It is also possible to provide a nozzle whose injection direction is directed from the side edge side of the mouse housing to the central suction port.

[0006]

According to the above construction, since the fluid such as water or gas is jetted from the nozzle pipe provided in the mouse housing toward the lower front portion, the deposits on the cleaning surface are easily peeled off, Can be moved to the suction port side. And since the swivel screw is attached to the suction port,
It is sucked in a swirling state at the suction port. Since the suction conveyance force is increased by the turning energy, the suction efficiency is increased, and the vacuum work efficiency can be improved without increasing the capacity of the compressor side.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the vacuum mouse according to the present invention will be described in detail below with reference to the drawings.

1 to 3 show a vacuum mouse according to an embodiment. As shown in these figures, the vacuum mouse has a front block 10 formed as a long rectangular parallelepiped and a rear block 12 formed almost in the same manner.
Are placed in parallel and spaced apart, and the top plate 1 is placed on top of these.
4, a mouse housing 20 having a side plate 16 and a side plate 16 is formed to form a suction space 18 therein. The top plate 14 is inclined from the center to both ends, and is set so that the suction force at the corners becomes large. A suction port 24 connected to the suction pipe 22 is opened in the center of the top plate 14 so that suction and exhaust can be performed through the suction port 24.

In contrast to such a basic vacuum mouth structure, in the embodiment, inside the suction space 18,
The rear block 12 which is the rear edge of the suction space 18
A fluid injection nozzle pipe 26 bent along the inner surface of the side plate 16 and the inner surface of the side plate 16 is arranged symmetrically with respect to the object with the suction port 24 interposed therebetween. This nozzle pipe 2
In the portion along the rear block 12 in 6, injection nozzles 28A slit formed at regular intervals are formed,
The injection direction is set to a depression angle of 30 to 40 degrees so as to be the lower front part, and is set to an angle of 30 to 40 degrees toward the center so as to inject toward the center of the space 18. It is set. Similarly, in the nozzle pipe 26 along the side plate 16, the jetting direction is set downward at a depression angle of 30 to 40 degrees to form a jetting nozzle 28B having the jetting direction toward the center side of the space 18. The dust is sprayed on the cleaning surface by the injection action of the suction port 24
I try to collect them on the side.

Further, inside the suction port 24, a ribbon screw 30 is attached which forms a spiral suction passage in its passage. This is arranged by fixing an assembly, in which the ribbon screw 30 is integrally mounted in advance inside the mounting pipe 32, between the suction port 24 and the suction pipe 22. Therefore, the airflow passing therethrough at the time of intake is made to flow out as a swirl flow. Furthermore,
As shown in FIG. 3, a pair of swirl guide vanes 34 are provided to attract a swirl flow in the suction space 18. This is the front block 10 and the rear block 12
Are arranged on the inner wall surface of the right and left so as to be point-symmetrical with respect to the center of the intake port 24. These are formed so as to project from each inner wall surface in a triangular shape, and their tops are formed near the opening edge of the intake port 24. As a result, when the airflow flowing from the side reaches the suction port 24, the flow direction is guided in the swirling direction on the plane, and the ribbon screw 3 is introduced into the suction port 24.
A turning out flow by 0 is easily performed.
In addition, the swirl guide vanes 34 have a simple vane cross section and have a point plate 14
It may be attached in a suspended state.

Further, in the vacuum mouse, sliders 36F and 36R having a small frictional resistance are attached to the lower surfaces of the front block 10 and the rear block 12.
The sliders 36F and 36R slightly project from the lower surface of the housing 20 so that they slide directly on the cleaning surface. In this case, the front slider 36F is formed wider than the rear slider 36R in the traveling direction (arrow), but a plurality of grooves 38 are formed on this sliding surface so as to be orthogonal to the traveling direction, and from this lower surface. The inflowing air flow is made turbulent, which improves the suction efficiency.

The function of the vacuum mouse thus constructed was compared with that of the vacuum mouse composed of the basic elements. That is, an experiment was conducted using a vacuum mouth without the injection nozzle pipe 26, the ribbon screw 30, the swirl guide vane 34, and the slider groove 38 as a comparative example. In this case, as shown in FIG. 5, the concrete chipping work trolley 40 that performs chipping by high-pressure water injection is followed by a vacuum mouse tow it, sprinkle water-containing simulated sand in the cleaning area, and perform vacuum work to reduce the residual rate. It is a comparison.

The experimental conditions are as follows. Using 30 liters of 5 mm undercut as simulated sand,
It was spread evenly over a range of 1.8m x 5m. Water is sand weight 20
% Watered on the sand. The vacuum carriage has a capacity of 41 m ³ / min, and the vacuum pressure is 7 cmHg on the vacuum car side. The moving speed was 5 m / min. The concrete chipping trolley always jets high-pressure water. The table below shows the percentage of sand remaining after cleaning under these conditions.

[0014]

[Table 1]

As is clear from the above results, it is understood that the vacuum efficiency is improved by making the water jet from the jet nozzles 28A and 28B, providing the slider groove 38, and providing the screw 30 and the guide vanes 34. it can.

Although water is jetted from the jet nozzle in the above embodiment, the nozzle pipe 26 may be connected to the exhaust port of the compressor to jet gas. In addition, the groove 3 formed in the front slider 36F
8 is formed along the direction orthogonal to the traveling direction,
This can be in any direction, and can also be formed in a grid pattern.

Next, FIG. 6 shows a second embodiment. This is different from the first embodiment in that the injection nozzles 28A and 28B are formed by slitting the nozzle pipe 26, but in the second embodiment a plurality of nozzle units 42 are attached to the nozzle pipe 26. . That is, the nozzle pipe 26 is arranged along the rear wall surface of the suction space 18 and the corner portion of the top plate 14, and the nozzle units 42 having a fan-shaped nozzle structure are attached to the nozzle pipe 26 at appropriate intervals. The jetting direction by the nozzle unit 42 is the same as that of the first embodiment, and the nozzle unit 42 is mounted so that the jetting direction becomes the center. The vacuum mouse having such a nozzle configuration also provided the same effect as that of the first embodiment.

[0018]

As described above, according to the present invention,
Since at least the trailing edge portion in the mouse housing is provided with a fluid injection nozzle pipe in which the injection direction is directed to the lower front portion, the negative pressure suction port is provided with a swirling screw,
The vacuum mouse can reduce the adhesion of concrete dust, sand, dust, etc., and can surely discharge these by accumulating them in the suction port.

[Brief description of drawings]

FIG. 1 is a front sectional view of a vacuum mouse according to an embodiment.

FIG. 2 is a partial cross-sectional side view of the vacuum mouse.

FIG. 3 is a bottom view of the vacuum mouse.

FIG. 4 is a bottom view of a nozzle pipe in which a slit nozzle is processed.

FIG. 5 is a schematic diagram of an experimental device.

FIG. 6 is a front sectional view and a bottom view of a vacuum mouse according to a second embodiment.

[Explanation of symbols] 10 front block 12 rear block 14 top plate 16 side plate 18 suction space 20 mouse housing 22 suction pipe 24 suction port 26 fluid jet nozzle pipe 28A jet nozzle 28B jet nozzle 30 ribbon screw 32 screw mounting pipe 34 swivel guide Blade 36F, 36R Slider 38 Groove

Front page continuation (72) Inventor Yoshikatsu Sako 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Corporation (72) Inventor Shoichi Ichihara 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Corporation (72) Inventor Shinichi Matsumoto 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Corporation (56) References: Kaihei 4-33716 (JP, U) 3-40316 (JP, U) Actual public 43-30550 (JP, Y1)

Claims (1)

(57) [Claims] 1. A bacque mouse in which a negative pressure suction port communicating with an air intake device is opened in an upper surface of a mouse housing having a suction port in contact with a floor surface, and the injection direction is forwarded to at least a rear edge of the mouse housing. A vacuum mouth, characterized in that a fluid jet nozzle directed downward is provided, and a swirling screw or guide vane is provided at the negative pressure suction port.