JP2604209Y2 - Liquid sprayer for road pavement with washing mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid dispersing machine for road pavement with a washing mechanism used for repairing and repairing a damaged portion such as an asphalt-paved road surface.

[0002]

2. Description of the Related Art In pavement for repairing and repairing road surfaces, prior to asphalt filling, a prime coat,
Pretreatment is performed using an asphalt emulsion for tack coating or the like so that the asphalt effectively adheres to the existing asphalt.

In such a case, use of a large-sized liquid sprayer is wasteful and workability is not good. Therefore, a small-sized liquid sprayer with a handy type washing mechanism with good workability has been proposed. ing. (See Japanese Utility Model Publication No. 3-16885)

This liquid sprayer comprises a liquid container body provided with an openable and closable discharge tap at the bottom, an air supply source, an air pipe for forcing air from the supply source to the upper part of the container body,
A cleaning liquid tank that communicates with the air pipe and the discharge plug via first and second switching valves and that pumps a cleaning liquid to the discharge plug through the second switching valve by air pressure from an air supply source; And a spraying conduit having a spraying nozzle at the tip.

In the above-mentioned sprayer, the liquid in the container body is sprayed through the discharge tap and the spray pipe by the air pressure from the air supply source with the first switching valve opened and the second switching valve closed. After the use of the liquid sprayer, the first switching valve is closed and the second switching valve is opened, and the cleaning liquid in the cleaning liquid tank is pneumatically dispensed with the second switching valve, the spray pipe, It is pumped through the spout to the spray nozzle, which cleans the spray line and prevents the liquid from solidifying.

[0006]

However, according to the above-mentioned conventional liquid sprayer, the opening and closing of the discharge tap and the switching operation of the first and second switching valves are performed at the time of spraying the liquid and at the time of cleaning the spraying line. It is necessary and complicated, and a discharge tap and two switching valves are indispensable, and since these are expensive, there are problems such as an increase in manufacturing cost.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to perform liquid spraying and cleaning of pipes with good operability only by switching one three-way cock. It is another object of the present invention to provide a road spraying liquid sprayer with a washing mechanism, which is advantageous in terms of cost.

[0008]

In order to achieve the above-mentioned object, a road pavement liquid sprayer with a washing mechanism of the present invention is connected to a tank for storing a liquid on a truck, and the tank is connected to the tank by a hose. An air pump for pumping air to the upper part of the tank, and a cleaning liquid tank having a cleaning liquid pressure pump,
A liquid discharge port opened at the bottom of the tank, a cleaning liquid tank, and a liquid spraying pipe having a jet nozzle at the tip are connected via a three-way cock.

[0009]

When the air pump is manually operated after switching the three-way cock so that the inside of the tank communicates with the liquid spray pipe, air is pumped from the air pump to an upper part of the tank, and the inside of the tank is pressurized. Is done. As a result, the liquid in the tank is sprayed onto the road surface and the like from the ejection nozzle at the tip through the discharge port at the bottom, the three-way cock, and the liquid spray pipe.

After the liquid spraying operation is completed, the three-way cock is switched so that the cleaning liquid tank and the liquid spraying pipe communicate with each other, and when the pump attached to the cleaning liquid tank is manually operated, the inside of the cleaning liquid tank is pressurized by air pressure from the pump. By this, the cleaning liquid in the cleaning liquid tank is jetted from the discharge nozzle at the tip through a pipe, a three-way cock, and a liquid spray pipe, whereby the liquid remaining in the three-way cock, the liquid spray pipe, and the jet nozzle is discharged from the jet nozzle. It is pushed out and washed, thereby preventing the remaining liquid from solidifying.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown, on the carriage 1 with Jikuka a pair of moving <br/> vehicle wheel 2 to the lower rear end, with a pressure resistance, the tank 3 for storing the liquid Yes by mounting, The tank
A pressure-resistant cleaning liquid tank 4 for storing a cleaning liquid and a manual air pump 5 are fixed to the right and left sides of the rear of the cleaning liquid tank 3.

A liquid inlet (not shown) that can be opened and closed by an open / close lid 6 is provided at an upper portion of the tank 3, and an air inlet is formed by an inlet pipe 7.
A pressure gauge 8 for indicating the internal pressure of the tank 3 is attached to the injection pipe 7, and one end of a high-pressure hose 9 is air-tightly connected.

The air pump 5 is provided with a check valve (not shown), and the other end of the high-pressure hose 9 is air-tightly connected to the air pressure feed port 5a. The air is pumped to the upper part of the tank 3 by the air pump 5.

The cleaning liquid tank 4 is provided with a cleaning liquid pressure pump 1.
0 is provided, and a cleaning liquid inlet 12 which can be opened and closed by an opening / closing lid 11 is provided at an upper portion. One end of a pipe 13 is connected to an outlet (not shown) opened in the bottom wall 4a of the washing liquid tank 4 in a watertight and airtight manner.

Further, the bottom wall 3a of the above-mentioned tank 3 is curved so as to protrude downward.
4 is formed by a discharge pipe 15.

A liquid outlet 17 of the three-way cock 16 is connected to the liquid discharge port 14 of the tank 3 in a water-tight and air-tight manner. One of the other two ports 18 and 19 of the three-way cock 16 is water-tightly and air-tightly connected to the other end of the pipe 13 via an elbow 20 or the like, and the other is a high pressure port. A liquid spraying tube 22 having a jet nozzle 23 at the tip is water-tightly and air-tightly connected with a hose 21 interposed therebetween.

The above-described three-way cock 16 switches its switching lever 16a to a position shown by a solid line in the drawing.
By rotating the tank 3 and the liquid spray pipe 22 and the lever 16a by 90 ° from the position shown by the solid line to switch to the position shown by the two-dot chain line in the figure, the washing liquid tank 4 and the liquid spray pipe 22 are switched. Are connected to each other through a pipe 13 and a high-pressure hose 21.

In the drawing, reference numeral 24 denotes a support rod suspended and fixed to the front of the carriage 1, reference numeral 25 denotes an on-off valve provided on the liquid spray tube 22,
Indicates a handle for movement.

[0019]

[Effect of the Invention] Since the present invention is configured as described above, it is used for spraying liquid as pre-treatment such as repairing and repairing roads, and for cleaning inside the liquid passage after finishing the liquid spraying operation. The switching operation when spraying the washing liquid can be performed by operating only one three-way cock, and the operability can be improved.
Since only the three-way cock described above does not require any other switching valve or the like, there are few connection points such as pipes and hoses constituting the passage of the liquid and the cleaning liquid, so that assembly of members is easy and the minimum cock is required. Combined with the simplification of the number and the structure, it can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a road spraying liquid sprayer with a washing mechanism according to the present invention.

[Description of Signs] 1 cart 3 tank 4 cleaning liquid tank 5 air pump 9 hose 10 cleaning liquid pressure pump 14 liquid discharge port 16 three-way cock 22 liquid spray pipe 23 ejection nozzle

Claims (1)

(57) [Scope of request for utility model registration] A tank for storing a liquid, an air pump connected to the tank by a hose, and for pumping air to an upper part of the tank, and a cleaning liquid tank having a cleaning liquid pump are provided on a carriage. A liquid sprayer for road pavement with a cleaning mechanism, characterized in that a liquid discharge port opened at the bottom of the tank, a cleaning liquid tank, and a liquid spray pipe having a jet nozzle at the tip are connected via a three-way cock.