JP2540172Y2 - Paint path cleaning equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning a paint path which pumps a paint in a tank and supplies the paint path to a spray gun, and particularly to a paint path which can be efficiently cleaned with a small amount of solvent. Related to the device.

[0002]

2. Description of the Related Art In general, a conventional cleaning method is to send a solvent such as thinner instead of a paint into a paint path, wash the paint, and then blow air to blow off the remaining solvent. However, such a method has a disadvantage that a large amount of solvent is consumed.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above points, and has a connection portion between a paint path and a tank for pumping paint in the tank and supplying it to a spray gun. In addition, a discharge port of a box having a supply port and a discharge port is connected through a switching valve, and a nozzle for spraying a solvent into the box is attached to the box,
A supply source of pressurized air was connected to the supply port of the box.

[0004]

[Function] During cleaning, the switching port connects the discharge port of the box to the paint path and sprays the solvent from the nozzle into the box, while supplying pressurized air to the supply port of the box, and the particles are atomized in the air. The solvent is mixed and the air is discharged from the discharge port, and is pumped into the paint path by the driving force of the pump. The paint adhered by the solvent mist is dissolved and pushed away by the air pressure to clean the path. After that, when the spraying of the solvent from the nozzle is stopped and only the pressurized air is supplied, the solvent remaining after adhering in the paint path is blown off to complete the cleaning.

[0005]

[Effects of the Invention] That is, according to the present invention, the air mixed with the solvent mist is pumped for cleaning,
As compared with the case where the solvent alone is fed under pressure, a cleaning effect comparable to that in the case where the solvent alone is exerted is exhibited, and the consumption of the solvent can be greatly reduced by the amount supplied by spraying.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. In the drawing, reference numeral 1 denotes a paint pump, which is connected to a paint tank 3 by a pumping pipe 2 and opens a first opening / closing valve 4 interposed in the pumping pipe 2 to drive the paint pump 1 so that the tank 3 is opened. Pump paint A in the supply pipe 5
From the spray gun 6.

A cleaning pipe 8 is connected to the paint pumping pipe 2 immediately downstream of the first opening / closing valve 4 and a second opening / closing valve 9 is interposed therebetween. The input side of the pipe 8 is connected to the discharge port 13 of the box 11 having the supply port 12 and the discharge port 13 opened.

On the upper surface of the box 11, a nozzle 15 for ejecting a thinner as a solvent is attached downward.
The nozzle 15 is connected to a thinner pump 17 for pumping and pumping thinner T in a tank 16 by a thinner supply pipe 18 provided with a third on-off valve 19.

The above-mentioned supply port 12 of the box 11
Is connected to a pressurized air supply source 23 by an air supply pipe 21 provided with a fourth on-off valve 22.

Next, the operation of this embodiment will be described. When performing cleaning, the first on-off valve 4 is closed and the second
The on / off valve 9 is opened and the paint pump 1 is driven. When the thinner pump 17 is driven by opening the third on-off valve 19, the thinner T is sprayed from the nozzle 15 into the box 11, and when the fourth on-off valve 22 is opened to supply pressurized air, the air is atomized. The mixed thinner T is mixed and discharged to the cleaning pipe 8, and is pressure-fed from the paint pumping pipe 2 connected thereto to the paint pump 1, and further to the path extending from the supply pipe 5 to the spray gun 6. It is gushing.

Along with this, the paint adhered by the mixed cinnamist is dissolved and washed away by air pressure while being washed. Thereafter, the third on-off valve 19 is closed and the nozzle 15 is closed.
When the spray of the thinner T from the nozzle is stopped and only the pressurized air is supplied, the thinner T attached and remaining in the path is blown off, and the cleaning is completed.

As described above, when the apparatus of this embodiment is used,
Since the air containing the thinner mist is pumped for cleaning, a cleaning effect comparable to the case where the thinner T alone is fed is exerted, and the consumption of the thinner T is supplied by spraying. Is greatly reduced. Regarding the paint path, which conventionally required 5 to 6 liters of thinner at the time of cleaning, the cleaning was performed using the apparatus of the present embodiment. It has been confirmed that the amount can be completely washed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

[Explanation of symbols]

1: paint pump 2: paint pumping pipe 4, 9, 19, 2
2: On-off valve 5: Supply pipe 6: Spray gun 8: Cleaning pipe 11: Box 1
2: Supply port 13: Discharge port 15: Nozzle 17: Thinner pump 23: Pressurized air supply source A: Paint T: Thinner (solvent)

Claims (1)

(57) [Scope of request for utility model registration] 1. A discharge port of a box having a supply port and a discharge port formed at a connection portion between the tank and a paint path through which a paint in a tank is pumped by a pump and supplied to a spray gun through a switching valve. And a nozzle for spraying a solvent into the box, the nozzle being connected to the box, and a supply source of pressurized air connected to the supply port of the box.