JPS635801Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a high viscosity paint coating device using a spray gun.

Technical background of the invention and its problems In general, paints containing a large amount of inorganic fillers, such as fireproof paints, have a high viscosity and are difficult to apply with a normal spray gun.

That is, as shown in FIG. 1, in a normal spray device, the paint 2 in the paint tank 1 is connected to the paint inlet 4a of the spray gun 4 by the pressure of the air compressor 3 connected to the paint tank 1. The paint is transported to the tip of the spray gun 4 through a hose 5, where it is sprayed by high pressure air sent from the air compressor 3 through a hose 6 connected to the high pressure air inlet 4b. It was difficult to transport the product to the spray gun and perform spraying smoothly.

Instead of a spray gun, a mortar gun or other device with a large nozzle diameter is sometimes used for spraying, but even this method has the disadvantage that if the distance between the paint tank and the spray gun is long, it becomes difficult to apply pressure to the tip of the gun, making spraying difficult.

Furthermore, since the paint is transported and sprayed using the pressure of the air compressor, when the paint in the paint tank runs out, work has to be interrupted while the paint is replenished.

Furthermore, when a mortar gun is used, the sprayed particles become rough, resulting in poor appearance and uneven finished surfaces.

Purpose of the invention The present invention was made in order to eliminate these drawbacks, and the purpose is to provide a coating device that can form a uniform coated surface with a good appearance even when using high-viscosity paint. shall be.

Summary of the invention That is, the device of the present invention includes a spray gun having a paint inlet and a high-pressure air inlet, a screw-type pressure pump connected to the paint inlet of the spray gun via a hose, and a high-pressure air inlet of the spray gun. It is characterized by comprising an air compressor connected to the inlet via a hose.

Examples of ideas Next, embodiments of the present invention will be described.

FIG. 2 is a block diagram of one embodiment of the device of the present invention. In FIG. 2, parts common to those in FIG. 1 are indicated by the same reference numerals.

The device of the present invention includes a spray gun 4 having a paint inlet 4a and a high pressure air inlet 4b, and a paint inlet 4.
The air compressor 3 is equipped with a screw-type pressure pump 7 connected to a via a hose 5 and an air compressor 3 connected to a high-pressure air inlet 4b via a hose 6. The screw-type pressure pump 7 pumps the paint put into the hopper 8 by rotating the screw, and its operation is temporarily stopped at a predetermined high pressure to maintain a constant pressure level, and it starts operating again when the pressure is reduced by discharging the paint. A device equipped with an automatic pressure device such as this is preferable. In the present invention, the high viscosity paint 2 placed in the hopper 8 of the screw-type pressure pump 7 is pressurized by the screw-type pressure pump 7 and is transported to the tip of the spray gun 4 through the hose 5. The transported paint is sprayed by high pressure air sent from the air inlet 4b through a hose 6 connected to an air compressor 3 of another system.

In this way, in the present invention, the paint is transported by a screw-type pressure pump, so it is possible to transport even highly viscous materials, and the paint is transported and ejected using separate pressure systems, so the screw-type Painting can be done with the hopper 8 of the pressure pump left open, and if the amount of high-viscosity paint runs low during work, it can be replenished while the pump is running, allowing continuous painting. There are advantages.

Effects of the invention As explained above, according to the device of the present invention, the paint is pumped to the spray gun by a screw-type pressure pump that is separate from the air compressor, so even a spray gun with a small outlet diameter can handle high-viscosity paint. Since the spraying operation can be made finer and the spray particles can be made finer, the finish of the painted surface is also better.

Furthermore, since the paint tank can be made open, the paint can be replenished even during coating work, allowing continuous work.

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining the conventional method,
FIG. 2 is a diagram showing an embodiment of the device of the present invention. 1... Paint tank, 2... Paint, 3... Air compressor, 4... Spray gun, 7... Screw type pressure pump.

Claims (1)

[Scope of utility model registration request] A spray gun having a paint inlet and a high-pressure air inlet, a screw-type pressure pump connected to the paint inlet of the spray gun via a hose, and connected to the high-pressure air inlet of the spray gun via a hose. A high viscosity paint coating device characterized by being equipped with an air compressor.