JPH04134452U - sprayer - Google Patents

Abstract

(57) [Summary] [Purpose] To spray a small amount of liquid in a flat pattern even though there are two compressed air supply ports. [Structure] Compressed air supply ports 6 and 7 are provided in the container body 1. One supply port 6 opens a passage 10 so as to discharge air from around the nozzle 11 as atomizing air, and the other supply port 7 The air outlet 16 of the flat blow cap 15 and the piston that advances and retreats the needle valve 19
The passages 13 and 17 were opened so as to be branched and supplied to the piston chamber 5 in which the piston 20 was housed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a sprayer that sprays liquids such as paints, dyes, mold release agents, etc. Regarding a sprayer with functions.

0002

[Conventional technology]

A sprayer that atomizes liquid by discharging compressed air is published in Utility Model Publication No. 52-23684. Are known.

0003 In this sprayer, the nozzle opening through which liquid is discharged is operated by supplying compressed air. The needle valve is linked by the piston, and the compressed air is used not only for atomization but also for the spray pattern. It is also used to flatten turns.

0004 In addition, the compressed air supply mentioned above can be done with one supply port or two supply ports in the container body. There is also one with three additional pieces.

[0005]

[Problem that the idea aims to solve]

Among the above-mentioned sprayers, those with one compressed air supply port supply compressed air inside the container. is branched into three directions and has two supply ports, one of which is used for atomization and spray pattern. The other one is used for piston operation, and the one with three supply ports is for atomization and spraying. They are used independently for pattern and piston operation.

[0006] However, when using the above-mentioned sprayer to create a flat spray pattern (long oval shape), the liquid If the body mass is large, choose one, two, or three compressed air supply ports. However, if the amount of liquid is small (e.g. less than 50cc), the amount sprayed will be reduced. Because the air pressure is small, the air pressure of compressed air supplied for atomization and spray pattern is the same. The problem is that flat spraying is not possible with sprayers that have one supply port or two supply ports that are the same. Has a point. Additionally, there are three supply ports, each of which can supply compressed air independently. The reason is that the air pressure of compressed air can be varied high and low, so the amount of liquid can be reduced. Even if the air pressure of the spray pattern air is higher than that of the atomization air, it can be done evenly. However, this sprayer with three supply ports has three for air and three for liquid. A total of four hoses will be connected, one for each sprayer, making it possible to use multiple sprayers. In addition to the number of hoses, a spray device that is installed in multiple units requires a control system to supply and stop air. This has the problem of complicating the process.

[0007] The present invention was devised in view of the problems of the conventional technology as described above. The purpose of this is that although there are two compressed air supply ports provided in the container, a small amount of To provide a sprayer capable of sufficiently flat spraying even liquid.

[0008]

[Means to solve the problem]

In order to achieve the above purpose, the sprayer in this invention is equipped with a nozzle, needle valve, etc. Two compressed air supply ports are installed in the container to be used, and one of them is used as atomizing air. A passage is opened so that the air is discharged from around the nozzle, and the other one is for air from the flat blowing cap. A passage was opened so that the supply was branched to the nozzle hole and the piston chamber that moved the needle valve forward and backward. It is characterized by

[0009]

[Effect]

According to the above means, compressed air atomizes the liquid and flat sprays the spray pattern. Compressed air is supplied from separate supply ports, so compressed air for atomization and compressed air for flat blowing The air pressure of the compressed air that is ejected from the air outlet of the cap is set at a high and low level. The air pressure of the compressed air that blows out from the air outlet of the blowing cap is the same as that of the atomizing air. By applying pressure, it is possible to spray even a small amount of liquid.

0010

[Effect of the idea]

Since the atomizer of the present invention is constructed as described above, the air pressure of the atomizing air is On the other hand, the air pressure of the compressed air that is ejected from the air outlet of the flat blowing cap is increased. This allows you to make a difference and thereby ensure that even a small amount of liquid can be sprayed flat. come.

[0011] Moreover, since there are two compressed air supply ports with different air pressures, the compressed air supply It has fewer hoses than the one with three ports, and has a control system for supplying and stopping air. There is less need for maintenance, and the configuration of painting equipment etc. can be simpler than conventional equipment. It has the advantage of

0012

【Example】

Below, an example of the present invention will be explained based on the drawings. The vessel body 1 is cut into a block shape, and a needle valve passage hole 2 is drilled in the center of the vessel body 1. One side of the valve passage hole 2 (the left side in the drawing) is continuous with a recess 3 formed on the outer surface of the vessel body 1. The other side of the needle valve passage hole 2 (the right side in the drawing) is opened in the nozzle mounting hole 4 formed by It opens into a piston chamber 5 recessed in the opposite outer surface of the container body 1 .

[0013] Also, on the outer peripheral surface of the container body 1 which is perpendicular to the axis of the needle valve passage hole 2 of the container body 1, atomizing air is provided. A supply port 6, a supply port 7 for flat blow and piston operating air, and a liquid supply port 8 are provided. A nipple 9 for connecting a hose is screwed onto each of the supply ports 6, 7, and 8.

[0014] The atomizing air supply port 6 is provided through a passage 10 that is parallel to the needle valve passage hole 2. A communicating opening is made in the recess 3 and is opened around the nozzle 11 that is screwed into the nozzle mounting hole 4. Compressed air is supplied to the passage 12.

[0015] The air supply port 7 for flat blowing and piston operation is located radially outward from the passage 10 described above. The passage 13 is opened parallel to the needle valve passage hole 2 and communicates with the rear side of the passage 13, and the front side of the passage 13 is provided with a recess. An annular concave groove 14 formed concentrically on the outside in the radial direction of No. 3 has an opening communicating with the bottom surface thereof, Therefore, the air outlet holes 16, 16' formed in the flat blowing cap 15 attached to the container body 1. Compressed air is discharged from the nozzle toward the center line.

[0016] Further, a passage 17 is opened in the peripheral wall of the supply port 7 and communicates with the bottom surface of the piston chamber 5. is formed so that the compressed air fed into the supply port 7 flows into the piston chamber 5. It is.

[0017] The liquid supply port 8 is connected to the nozzle mounting hole 4 located in front of the needle valve passage hole 2 via the passage 18. A communication opening is provided at the bottom, and the liquid sent from the supply port 8 passes through the passage 18 to the nozzle. The gap between the inner surface of the nozzle 11 that has entered the mounting hole 4 and is screwed into the nozzle mounting hole 4 and the needle valve 19 a and reach the nozzle tip.

[0018] A piston 20 is fitted into the piston chamber 5 so as to be slidable back and forth, and the outer circumference of the piston 20 is There is an interference between the projecting edge 20' and the liquid volume adjustment lid 21 which is screwed onto the rear end opening of the piston chamber 5. The spring 22 is compressed and stored so that the piston 20 is always urged forward. .

[0019] The piston 20 has a hole 23 slightly larger in diameter than the outer diameter of the needle valve 19 in its center. Insert the valve 19 so that it can move back and forth, and screw a nut etc. to the rear of the needle valve 19. A small spring is provided between the protrusion 24 and a lid 25 attached to the rear end of the piston 20. The needle valve 19 with the needle 26 interposed therein is biased forward.

[0020] In the figure, 27 is an O-ring, 28 is an O-ring holder, 29 is a holder, and 30 and 30' are holders. This is a mounting screw hole.

[0021] With the above configuration, the pressure of the compressed air for atomization is set at 0.5 to 1 kg/cm2, and the pressure of compressed air for atomization is set to 0.5 to 1 kg/cm2, and By setting the pressure of the air for piston operation to high pressure air of 3 to 4 kg/cm2, the piston The air flowing into the ton chamber 5 causes the piston 20 to compress the spring 22 and retreat, and Accompanied by this, the needle valve 19 is slid rearward to open the nozzle 11 and the liquid is discharged. stop The liquid is atomized by air ejected from around the nozzle 11, but the high pressure air Air is ejected toward the center from the air outlet 16 of the flat spray cap 15, creating a roughly circular spray shape. A flat pattern is formed by crushing it into a long oval shape.

[Brief explanation of drawings]

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

FIG. 2 is a sectional view taken along line (2)-(2) in FIG. 1;

[Explanation of symbols]

1: Container body 2: Needle valve passage hole 4: Nozzle mounting hole 5: Piston chamber 6: Atomizing air supply port 7: Air supply port for flat blowing and piston operation 11: Nozzle 15: Cap for flat blowing 16: Air Ejection hole 13, 17: Passage

Claims (1)

[Scope of utility model registration request] Claim 1: A needle valve passage hole is bored in the center of the vessel body, the front part of the needle valve passage hole opens into a nozzle mounting hole, the rear part opens into a piston chamber, and a nozzle is inserted into the nozzle mounting hole. In a sprayer, a flat blowing cap is attached which has an air outlet facing toward the outside in the radial direction, and the opening of the nozzle can be opened and closed by a needle valve equipped with a piston. Two supply ports are provided, one of which is opened with a passage so that air for atomization is discharged from around the nozzle,
The other one is a sprayer characterized by having a passage cut through so that the air is branched into the air injection hole of the flat spray cap and the piston chamber in which the needle valve advances and retreats.