JPS6327802Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a portable spray coating device for water wax, paint, etc.

(Prior Art) Conventional spray applicators either constantly supply air pressure into the tank through an air hose that is constantly connected to the tank, and use this air pressure to atomize the paint etc. pushed out of the tank using a spray gun.
Alternatively, air pressure is supplied into the tank by an electric pump provided at the bottom of the tank, and the paint, etc. in the tank is supplied to the nozzle by this air pressure.

However, with these conventional models, it is not possible to separate the air hose or electric cord for the electric pump from the tank, and when carrying the tank, you have to drag these air hoses and electric cords along. It was difficult to carry the tank freely.

In contrast, Utility Model Application Publication No. 8009 of 1933
There is a backpack-type sprayer as shown in the publication.
This sprayer has an injection port at the top of the liquid tank, and the liquid is injected into the liquid tank from this injection port.The liquid tank is also equipped with a flexible back pipe, and this back pipe is equipped with an air valve. Air is pressurized into the back pipe and the liquid tank through the air valve, and the pressure causes the chemical solution in the liquid tank to be sprayed from the nozzle.

(Problem to be solved by the invention) However, in the sprayer described in this publication, the amount of liquid injected into the liquid tank varies depending on the person using the sprayer, and this type of sprayer There is no guarantee that there will be enough air pressure storage space to enable continuous use. Furthermore, since it is necessary to firmly connect the compressed air supply side to the air inlet valve provided at the tip of the flexible backpack tube to fill it with air, it is inconvenient that connection and disconnection cannot be performed instantaneously. Furthermore, although work is carried out while carrying the liquid tank on one's back using a backpack tube, this type of backpack-type sprayer is difficult to use for work that requires frequent lifting and lowering of the liquid tank, and it is difficult to use for short and frequent operations such as at gas stations. Not suitable for use.

The purpose of this invention is to create a spray coating device that can secure a sufficiently large pressure accumulation space to enable continuous use for a relatively long time, has good workability when in use, and can be easily filled with air when not in use. It is about providing.

[Structure of the idea]

(Means for Solving the Problems) The present invention includes a coating material intake pipe 2 inserted into the upper part of a portable pressure accumulation tank 1, and an inner end of the coating material intake pipe 2 inserted into the pressure accumulation tank 1. A cap 3 is airtightly installed at the outer end opening of the coating material intake pipe 2, and a rigid air pressure intake pipe 4 is pulled out from the upper part of the pressure accumulation tank 1. A gripping part 5 is provided on the center of gravity of the pressure accumulation tank 1 by bending the upper part of the pressure storage tank 1 horizontally. A connection valve 7 that can be freely fitted and removed from the upper side is provided,
This is a spray coating device in which a coating material extraction pipe 13 is inserted into the pressure accumulation tank 1, and a spray gun 15 is connected to the outer end of the coating material extraction pipe 13 via a hose 14.

(Function) When the coating material is injected into the pressure accumulation tank 1, the coating material injected into the tank 1 from the coating material intake pipe 2 rises to a level that blocks the lower end opening of the intake pipe 2. The air sealed in the upper part of the tank 1 ensures a sufficient pressure accumulation space 20.

Furthermore, when using this device, hold the grip 5 of the air injection tube 4, which has rigidity and does not easily deform, with one hand, and hold the tank 1 suspended in a well-balanced manner at any desired location. Then, the user operates the spray gun 15 with the other hand to spray paint or the like.

When this device is not in use, the pressure accumulator tank 1 can be suspended on the support member 6 by fitting the connection valve 7 provided on the air pressure inlet pipe 4 into the air supply valve 11 on the support member 6. For example, compressed air is filled into the tank 1 from the air supply valve 11 through the connection valve 7 and the air injection pipe 4.

(Examples) Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

As shown in FIG. 1, a coating material intake pipe 2 is inserted into the upper part of a portable pressure accumulation tank 1, and the inner end of this coating material intake pipe 2 is inserted into the tank 1 as shown in FIG. It opens at the material injection limit level set in the middle, and a cap 3 is screwed onto the outer end opening of the coating material intake pipe 2 to airtightly close the intake pipe 2. In addition, the air pressure inlet pipe 4 having rigidity is pulled out from the upper part of the pressure accumulator tank 1, and the upper part of this air inlet pipe 4 is bent horizontally.
A grip part 5 is provided on the center of gravity of the pressure accumulator tank 1, and an air supply valve 11 is provided on the grip part 5, which is located almost on the center of gravity of the pressure accumulator tank 1 and is provided at the upper end of a stand 6 as an external support member. A connection valve 7 is provided which can be freely fitted and removed from the upper side. This connection valve 7 is a check valve, and is opened by the air pressure supplied from the air supply valve 11 and closed by the internal pressure of the air inlet pipe 4.

The stand 6 has legs 8 at its lower part, and a connecting part 10 at the lower part that fits into an air chuck 9 connected to the air supply port of the air compressor, and the air supply valve 11 at the upper end. They are communicated by a certain pipe 12. The air supply valve 11 is hermetically fitted with the connection valve 7,
At the time of this fitting, the connecting valve 7 is opened by the pressing force. Note that even when the pressure accumulator tank 1 is used after being removed from the air supply valve 11, compressed air is supplied to the valve 11 so that it is immediately filled with air upon fitting.

Moreover, as shown in FIG. 2, the pressure accumulator tank 1
A coating material extraction tube 13 is inserted into the interior of the coating material extraction tube 13, and a spray gun 15 is connected to the outer end of the coating material extraction tube 13 via a hose 14 as shown in FIG. 1
6 is the cover of tank 1, 17 is the leg of tank 1, 1
8 is a drain valve for discharging the coating material.

Furthermore, as shown in FIG. 2, since the inner end of the coating material intake pipe 2 is inserted halfway into the pressure storage tank 1 and opened, the material injected into the tank 1 from this intake pipe 2 is 19 is the intake pipe 2
The air enters the tank smoothly up to the bottom opening level, but as shown in Figure 2, after reaching this bottom opening level, there is no place for the air in the upper part of the sealed tank to escape, and the tank internal pressure increases. , material 19 no longer enters the tank. That is, the amount of material 19 injected is automatically limited, and a sufficiently large pressure accumulation space 20 necessary for continuous extrusion of the material is secured within the tank 1.

As shown in FIG. Air supply valve 1
1, compressed air is forced into the tank 1 and stored in the pressure accumulation space 20 within the tank 1. When the air pressure in this pressure accumulation space 20 reaches a predetermined pressure,
The connection between the air supply valve 11 and the connection valve 7 is automatically released, and the supply of air into the tank 1 is stopped.

When in use, the user removes the device from the stand 6 and carries it around by holding the grip 5 in a well-balanced manner with one hand, while holding the spray gun 15 with the other hand. At this time, when the trigger 21 of the spray gun 15 is pulled, the inside of the tank 1 opens to the outside through the spray gun 15, so that the water wax inside the tank 1,
A coating material 19 such as a paint is pushed out by compressed air in the pressure accumulation space 20, sprayed from a spray gun 15, and applied to the body of an automobile.

[Effect of idea]

According to the present invention, since the inner end of the coating material intake pipe is inserted and opened up to the material injection limit level set in the middle of the pressure accumulation tank, the material injected into the tank from this intake pipe is After reaching the inner end opening level of the coating material intake pipe, no more material enters the tank, and a large air pressure accumulation space necessary for material extrusion is secured at the top of the tank, allowing continuous use for long periods of time. It is possible. In addition, a rigid air pressure pipe is pulled out from the top of the portable pressure accumulator tank.
The upper part of this air pressure inlet pipe is bent horizontally to provide a grip part on the center of gravity of the pressure accumulation tank, and the grip part is positioned above the pressure accumulation tank and is connected to the air supply valve on the external support member from above from above. Since a removable connection valve is provided, it is possible to perform spray application work by lifting the grip that is engaged with the air supply valve of the support member via the connection valve and carrying the pressure accumulation tank in a well-balanced manner. is possible,
Good workability. In addition, the connection valve provided on the grip is located on the pressure accumulator tank and can be inserted into and removed from the top of the air supply valve on the external support member, so when the device is not in use, By simply fitting the connection valve on the tank side to the air supply valve on the support member side, the tank is suspended and supported in a well-balanced manner, and air is automatically filled into the tank, allowing special air filling operations to be performed. There's no need. Furthermore, the above-mentioned air injection pipe has the original function as a pipe for introducing compressed air into the tank, a handle for carrying the tank, and a function for suspending the tank on an external support member when filling with air. The overall shape of the device is extremely simple, allowing it to be manufactured at low cost, and the only thing that protrudes above the tank is the air pressure tube. Since there are no other objects in the way, it is suitable for handling and is convenient to handle.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the spray coating device of the present invention, and FIG. 2 is a sectional view of the pressure accumulating tank. 1...Pressure storage tank, 2...Coating material intake pipe, 3
...Cap, 4...Pneumatic inlet pipe, 5...Gripping part, 6...Stand as a support member, 7...Connection valve, 11...Air supply valve, 13...Coating material removal pipe, 14...Hose , 15...Spray gun, 19...Coating material.

Claims (1)

[Scope of utility model registration request] A coating material intake pipe is inserted into the top of the portable pressure accumulator tank, and the inner end of this coating material intake pipe opens at a material injection limit level set halfway inside the pressure storage tank, and the coating material intake pipe A cap is airtightly provided at the outer end opening of the pressure accumulator tank, a rigid air pressure tube is pulled out from the top of the pressure accumulation tank, the top of the air pressure tube is bent horizontally, a grip is provided above the center of gravity of the pressure storage tank, and this grip a connecting valve located on the pressure accumulator tank and detachable from above with respect to the air supply valve on the external support member;
A spray coating device characterized in that a coating material take-out pipe is inserted into the pressure accumulating tank, and a spray gun is connected to the outer end of the coating material take-out pipe via a hose.