JPH0442349Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an artificial turf cleaning vehicle installed on the ground.

(Prior Art and Problems) In recent years, artificial turf has been widely used in facilities such as stadiums. When cleaning artificial turf surfaces, vacuum suction type cleaning trucks and cleaning trucks that can be used for surfaces other than artificial turf are used. The former uses the principle of a vacuum cleaner to suck in air and dust, while the latter uses a nozzle that continuously sprays water to wash away stuck dirt and at the same time collect the reflected dirty water. Some devices use a hood to suck up the wastewater, and some devices separate the sucked-in wastewater from dust and recirculate the water.

However, in the case of the former, it is difficult to clean the dirt stuck to the artificial turf. In addition, even if the latter type is a type that recycles water, it is not developed for artificial turf, has low water recovery efficiency, and requires a relatively large amount of water.
In other words, there was a problem in that a large amount of water remained on the artificial turf surface. In addition, in that case, conventional water spray nozzles for cleaning use a type that sprays water from two directions toward one point, and dust within the range of both spray lines is easily inhaled. Another problem was that the dust outside was blocked by the water jet and could not be inhaled.

(Means and effects for solving the problems) The present invention aims to solve the above-mentioned problems and provide an artificial turf cleaning vehicle with an extremely high water recovery rate.

In order to achieve the above object, the present invention is a cleaning vehicle for cleaning artificial turf stretched on the ground, and includes a hood that opens downward and is connected to a suction pipe at the top for spraying cleaning liquid. A cleaning suction device has a straight nozzle tube with multiple nozzle openings arranged horizontally at right angles to the traveling direction of the cleaning vehicle, and a mixture of suction air, cleaning liquid, and dust sucked in by the suction tube is and a separation device for separating the air, the separation device having a discharge section for discharging the separated air into the atmosphere, a tank section for the separated cleaning liquid being connected to the nozzle pipe, and the hood discharging the artificial turf at a predetermined pressure. The hood has a flange around the periphery that makes contact with the surface, and a small opening for sucking atmospheric air that communicates the interior space of the hood with the outside in the wall of the hood.

Various methods can be considered to bring the brim into contact with the artificial turf with a predetermined pressure, but the simplest method is to bring the brim and the surface of the artificial turf into contact using negative pressure generated within the cleaning suction device. The flange area can be set so that the contact pressure between the parts is optimal for cleaning and suction.

Further, in order to allow the collar surface to move smoothly over the artificial turf, it is preferable that the outer edge of the collar slopes upward.

Furthermore, in order to improve suction performance for dust and the like, it is desirable that suction pipes be provided on both sides of the nozzle pipe.

In the present invention configured as described above, the cleaning liquid, e.g., water, sprayed downward from the nozzle toward the artificial turf surface physically and/or chemically washes away dirt from the artificial turf, and removes dirt and other dirt from the artificial turf. The foreign matter, together with the cleaning liquid, is swept up by the outside air sucked into the hood through the gap between the collar and the artificial turf surface and guided to the suction pipe. At that time, the outer rim of the hood is in contact with the artificial turf surface at a predetermined pressure, so it does not absorb much more outside air than is necessary to stir up the cleaning solution and bring it into the suction pipe, making it extremely effective at cleaning. and aspirate the cleaning solution. Note that once the gap narrows due to the condition of the grass or obstacles, a certain amount of outside air must be sucked in to prevent the gap from narrowing as the negative pressure inside the hood increases.
This is done through a small opening in the hood. Therefore, if the degree of opening of the small opening can be adjusted, it can correspond to various conditions.

Next, the air cleaning liquid and dust sucked as the mixture are separated by a separator, the air is released into the atmosphere from the discharge part, and the cleaning liquid is supplied to the nozzle pipe again by a pump or the like through the tank part. Ru. Note that the separated dust and foreign matter are stored as they are and later collected and disposed of.

(Example) An example of the present invention will be described below based on the accompanying drawings.

FIG. 1 shows the artificial turf cleaning vehicle of this embodiment. In the figure, reference numeral 1 denotes a vehicle body, and the front portion thereof is provided with a connecting portion 1A that is connected to a towing vehicle (not shown).

An arm 3 is provided at the rear of the vehicle body 1, one end of which is rotatable around a pin 2A with respect to the vehicle body 1, and a cleaning suction device 4 is rotatably attached to the other end of the arm. The cleaning suction device 4 is separately suspended by a wire 5, and is adapted to be pulled upward by a hoist 6 when not in use.

As shown in FIG. 2, the cleaning suction device 4 has a nozzle pipe 41 in a hood 40 that opens downward.
The structure is arranged such that: The hood 40 has a long shape perpendicular to the traveling direction P of the cleaning vehicle,
A nozzle accommodating portion 42 is formed in the center of the ceiling portion, also extending in a right angle direction. The nozzle 41 is provided with downward nozzle ports at appropriate intervals in the longitudinal direction, and protrudes from one side of the hood 40 and is bent upward to form a connecting portion 41A. The hood 40 is provided with suction pipes 43A, 43B, 43C, and 43D on both sides of the nozzle 41. The hood 40 has each suction tube 43A, 43B, 4
In order to improve the suction effect at the connection part of 3C and 43D, approximately cone-shaped parts 44A, 44B, 44 are attached toward the suction tube.
C and 44D are formed, respectively.

A collar 45 is provided on the outer periphery of the hood 40,
The flange 45 consists of a flat part 45A and a sloped part 45B that slopes upward toward the outside. Furthermore, a small opening 46 is provided on the side of the hood 40 for guiding outside air into the hood 40. It is desirable that the opening area of the small opening 46 is adjustable.

Suction pipe 43 of the cleaning suction device 4 as described above
A, 43B, 43C, and 43D are each put together and connected to the separation device 7. The separation device 7 includes a gas-liquid separation section 8 that first separates only air from a mixture of suction air, recovered cleaning liquid, dust, etc.;
Next, a liquid-solid separation section 9 is connected to this and separates the cleaning liquid from foreign substances such as dust. Each pipe of the liquid-solid separation section 9 has a tank chamber 11 that receives the cleaning liquid and a tank chamber 11 that receives the dust and the like. It is connected to the stock chamber 10. The tank chamber 11 is filled with a pump 12.
It is connected to the connection part 41A of the nozzle pipe 41 of the cleaning suction device 4 through the. On the other hand, in the gas-liquid separation section 8, an air take-off pipe 13 thereof is connected to a vacuum pump 14, and a silencer 15 is attached to a pipe serving as a discharge section of the vacuum pump 14.

In the artificial turf cleaning vehicle of this embodiment as described above, the artificial turf surface is cleaned in the following manner.

First, the wire 5 is drawn out from the hoist, and the cleaning suction device 4 descends under its own weight and comes into contact with the artificial turf surface. Then, the cleaning liquid in the tank section 11, for example, water, is supplied to the nozzle pipe 41 of the cleaning suction device 4 by the pump. The water supplied to the nozzle pipe 41 is jetted from the nozzle port toward the artificial turf surface, and its flow velocity brings out dirt such as dust. Then, by the vacuum pressure of the vacuum pump 14, the nozzle pipe 4
The dust is sucked together with the water on the artificial turf into suction pipes 43A to 43D arranged on both sides of the artificial turf and sent to the separation device 7. When suctioning the dust, etc., the hood 40 is in contact with the artificial turf at a predetermined pressure at the collar 45, and an appropriate amount of outside air is sucked in through the small opening, so the dust, etc. inside the hood is extremely absorbed together with water. Effectively absorbed. This suction work is performed while moving in the P direction, but since the brim 45 has the slope portion 45B, the contact surface is stable and moves smoothly without getting caught on the artificial turf.

The sucked air, dust, and water are first separated into only air in the gas-liquid separation section 8 of the separation device 7, and the separated air is drawn by the vacuum pump 14 and discharged into the atmosphere through a silencer. On the other hand, the water containing dust is separated into clean water and dust and foreign matter in the solid-liquid separation section 9.
Water is in the tank section 11, and dust, etc. is in the storage section 10.
be accommodated in. The water in the tank section 11 is sent to the nozzle pipe 41 again via the pump 12. The water is thus recycled and used. The dust and the like are later taken out from the stock section 10 and disposed of.

Note that once the cleaning of the artificial turf surface is completed, the wire 5 is wound up by the hoisting machine 6 and the cleaning suction device 4
to prevent it from being dragged by the running of the cleaning vehicle.

(Effect of the invention) As described above, according to the invention, the hood that accommodates the nozzle is brought into contact with the artificial turf surface at the brim,
Since the cleaning solution is suctioned after cleaning, the recovery efficiency of the cleaning solution is greatly improved, water consumption is reduced, and a large area of artificial turf can be cleaned even with a small tank. Since not much cleaning solution is left behind, the stadium can be used immediately without taking much time to dry. Furthermore, since the cleaning liquid after cleaning is sucked from both sides of the nozzle pipe, there is no possibility that dust or the like that is not absorbed by the water jet sprayed from the nozzle pipe remains on the artificial turf surface, and the cleaning effect is improved.

[Brief explanation of the drawing]

Fig. 1 shows the general configuration of an artificial turf cleaning vehicle according to an embodiment of the present invention, Fig. 1A is a plan view, Fig. 1B is a front view, and Fig. 2 shows the cleaning suction device of Fig. 1. FIG. 2 is a partially cutaway perspective view showing a general configuration. 3... Arm body, 4... Cleaning suction device, 7... Separation device, 11... Tank section, 15... Discharge section (silencer), 40... Hood, 41... Nozzle pipe, 43
A to D... Suction pipe, 45... Tsuba, 45B... Gradient section, 46... Small opening.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cleaning vehicle for cleaning artificial turf stretched on the ground, which includes a nozzle for spraying cleaning liquid in a hood that opens downward and is connected to a suction pipe at the top. A cleaning suction device has a straight nozzle tube with multiple openings arranged horizontally at right angles to the running direction of the cleaning vehicle, and a mixture of suction air, cleaning liquid, and dust sucked in by the suction tube is separately used. and a separation device for separating the air, the separation device having a discharge section for discharging the separated air into the atmosphere, a tank section for the separated cleaning liquid being connected to the nozzle pipe, and the hood discharging the artificial turf at a predetermined pressure. An artificial turf cleaning vehicle, comprising: a flange around the periphery that contacts a surface; and a small opening in the wall of the hood for air suction to communicate the interior space of the hood with the outside. (2) The cleaning suction device is attached to an arm that is rotatably provided on the vehicle body, and is characterized in that it generates a predetermined pressure of contact between the collar surface and the artificial turf surface due to its own weight. An artificial turf cleaning vehicle as set forth in claim (1) of the utility model registration claim. (3) The artificial turf cleaning vehicle according to claim (1) or (2), wherein the outer edge of the collar is sloped upward. (4) The artificial turf cleaning vehicle according to claim 1, wherein the suction pipes are arranged on both sides of the nozzle pipe.