JPH07308609A - Spray gun for cleaning use - Google Patents

Abstract

PURPOSE:To discharge the leak of a cleaning liquid easily, recycle it, without requiring to discard the cleaning liquid, and enhance economy by recycling in a spray gun for cleaning with the plunger of a plunger pump inserted into a cylinder equipped with a cleaning liquid feed port and a drain port. CONSTITUTION:A drain tank 9 is connected to a drain port, a connection hose 10 is connected to a feed port, and a cleaning liquid feed hose 11 and the drain tank are connected to the connection hose through a three-way valve 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning spray gun for cleaning a textile product by injecting a cleaning liquid by a plunger of a plunger pump.

[0002]

2. Description of the Related Art When cleaning textiles, a spray gun of the type described in Japanese Utility Model Laid-Open No. 4-74560 is widely used. In the spray gun of the publication, a plunger of a plunger pump is inserted into a cylinder, a cleaning liquid supply port is provided in the cylinder, and a cleaning liquid supply hose is connected to the supply port. Therefore, when the plunger is linearly moved back and forth in the cylinder, the cleaning liquid is supplied to the cylinder through the supply hose and the supply port, and the cleaning liquid is sprayed by the plunger. This allows the textile to be washed. Further, the cylinder is provided with a drain port, the drain hose is connected to the drain port, and the leaked cleaning liquid is discharged from the drain port, naturally drops, passes through the drain hose, and is guided to the drain tank.

However, in the case of this spray gun,
The drain hose may be bent due to the work operation of the worker. If the drain hose bends, the leaked cleaning liquid cannot pass through the drain hose and cannot be discharged. Further, when the drain tank is filled with the cleaning liquid, the cleaning liquid in the drain tank must be discarded each time, which is troublesome. There is also a problem that the amount of cleaning liquid discarded is not small, wasteful, and uneconomical.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned conventional problems, and in a cleaning spray gun in which a plunger of a plunger pump is inserted into a cylinder and a cleaning liquid supply port and a drain port are provided in the cylinder, leakage cleaning liquid is prevented. The purpose of the invention is to make it possible to easily discharge and reuse the cleaning liquid without needing to dispose of the cleaning liquid, and to improve the economical efficiency by the reuse.

[0005]

According to the present invention, the drain tank is connected to the drain port, the connection hose is connected to the supply port, and the cleaning liquid supply hose and the drain tank are connected to the connection hose via the three-way valve.

[0006]

Description of Embodiments Embodiments of the present invention will be described below.

In FIG. 1, this is a cleaning spray gun for cleaning textiles and has a plunger pump 1. The plunger pump 1 is composed of a plunger 2 and a cylinder 3. The plunger 2 is inserted into the cylinder 3, and the cylinder 3 is attached to the casing 4. Further, the injection nozzle 5 is connected to the cylinder 3, and the casing 4 is
A C or AC motor and a cam mechanism are built in, and the plunger 2 is connected to the cam mechanism. The DC or AC motor and the cam mechanism are those described in Japanese Utility Model Laid-Open No. 4-74560. The DC or AC motor is driven by a switch operation, the output is transmitted by the cam mechanism, and the plunger 2 is moved to the cylinder. The reciprocating linear movement within 3 is as described in the publication. A magnet and a movable iron core may be built in the casing 4, and the plunger 2 may be linearly moved back and forth by the magnet and the movable iron core. The structure is also described in the same publication.

Further, the cylinder 3 is provided with a cleaning liquid supply port 6, a drain port 7 and a ventilation port 8. The supply port 6 and the drain port 7 are opened downward, the ventilation port 8 is located on the opposite side of the drain port 7,
Open upwards. Further, the drain tank 9 is connected to the drain port 7, the connection hose 10 is connected to the supply port 6, and the cleaning liquid supply hose 11 and the drain tank 9 are connected to the connection hose 10 via the three-way valve 12. In this embodiment, the three-way valve 12 is a sleeve 1 having a constant length.
3 is used and is accommodated in the lower part of the drain tank 9, and the sleeve 13 and the drain tank 9 have a double cylindrical shape. Further, a pair of O-rings 14 are provided and fixed on the inner peripheral surface of the drain tank 9, and the outer peripheral surface of the sleeve 13 comes into contact therewith, and the O-ring 14 causes the drain tank 9
The sleeve 13 and the sleeve 13 are sealed, and the supply hose 11 is connected to the drain tank 9 between the O-rings 14. The drain tank 9 is transparent. Supply hose 1
1 extends downward and reaches the cleaning liquid supply tank. The sleeve 13 has a closed upper end, and the lower end is connected to the connection hose 10.

Further, a ring-shaped handle 15 is provided in the lower portion of the sleeve 13, four through holes 16 are provided in the outer peripheral surface of the sleeve 13, and are formed at equal angular intervals. Therefore, the handle 13 pulls down the sleeve 13 and places it in the position of FIG.
6 can be located between the O-rings 14. It is also possible to push up the sleeve 13 with the handle 15 and place it in the position of FIG. 2 so that the through hole 16 is located above the O-ring 14. This allows the three-way valve 12 to be switched.

Therefore, in this spray gun,
When the sleeve 13 is pulled down to the position shown in FIG. 1 and the plunger 2 is linearly moved back and forth in the cylinder 3, the cleaning liquid is supplied to the three-way valve 12 through the supply hose 11. Furthermore, O
Between the rings 14, the cleaning liquid passes through the holes 1 of the sleeve 13.
6 is supplied to the cylinder 3 through the connection hose 10 and the supply port 6. Therefore, the cleaning liquid is sucked and discharged by the plunger 2, and the cleaning liquid is jetted from the jet nozzle 5. This allows the textile to be washed. At the same time, the leaked cleaning liquid is discharged from the drain port 7, guided to the drain tank 9, and stored.

Further, when the drain tank 9 is filled with the cleaning liquid, the sleeve 13 is pushed up to the position shown in FIG. 2, whereby the three-way valve 12 is switched. And the plunger 2
Is moved linearly in the cylinder 3, the cleaning liquid is guided to the through hole 16 of the sleeve 13 in the drain tank 9 and is supplied to the cylinder 3 through the connection hose 10 and the supply port 6. Therefore, the leaked cleaning liquid can be easily discharged and reused, and the plunger 2 can inject the cleaning liquid to clean the textile product.

[0012]

As described above, according to the present invention, the leaked cleaning liquid can be easily discharged and reused. Therefore, it is not necessary to discard the cleaning liquid. By reusing it, economic efficiency can be improved and the initial purpose can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which the three-way valve of FIG. 1 is switched.

[Explanation of symbols]

 1 Plunger pump 2 Plunger 3 Cylinder 6 Cleaning liquid supply port 7 Drain port 9 Drain tank 10 Connection hose 11 Cleaning liquid supply hose 12 Three-way valve

Claims (1)

[Claims] 1. A plunger pump plunger is inserted into a cylinder, a cleaning liquid supply port and a drain port are provided in the cylinder, the cleaning liquid is passed through the supply port, is supplied to the cylinder, and the cleaning liquid is injected by the plunger to cause leakage. In a cleaning spray gun configured to discharge the cleaning liquid from the drain port, a drain tank is connected to the drain port, a connection hose is connected to the supply port, and the cleaning liquid supply hose and the drain tank are connected to a three-way valve. A spray gun for cleaning, characterized in that the spray gun is connected to the connection hose via the connection hose.