CN2369775Y

CN2369775Y - Pneumatic air spray gun

Info

Publication number: CN2369775Y
Application number: CN 99231079
Authority: CN
Inventors: 石安涛
Original assignee: CHONGQING} CHANGJIANG COATING MACHINERY PLANT
Current assignee: CHONGQING} CHANGJIANG COATING MACHINERY PLANT
Priority date: 1999-03-04
Filing date: 1999-03-04
Publication date: 2000-03-22
Anticipated expiration: 2009-03-04

Abstract

The utility model relates to an air spray gun used for the painting field. An air valve and a paint valve of the spray gun are arranged on the same shaft line for aiming at the disadvantages of aspiration and painting by negative pressure, no multiple atomization, low utilization ratio, poor spray painting quality of the air spray gun in the prior art. A nozzle opening is provided with an annular hole, a reversal flattening hole, a protective hole and a side hole to implement multiple atomization to the paint. Thus, the utilization rate and the quality of the air spraying paint are raised, and the increasingly serious environmental pollution is reduced.

Description

The pressure sending type air gun

The utility model relates to the air gun that a kind of field of coating is used.

At present, air gun is the formula of sucting basically, and as " the self-priming blackwash sprayer shower nozzle of high-power single tube " of Chinese patent 95242922 bulletins, the axis of its nozzle body import and the axis of outlet intersect in obtuse angle, promptly when swiftly flowing compressed air flows through air nozzle, form vacuum flow at the coating front end, with the coating sucking-off in the jar, because compressed air must arrive greatly to a certain degree, therefore, it is big to splash during this spray gun spraying, and utilization rate only is 20%～25%, serious environment pollution; And coating repeatedly can not be atomized, cause spraying inhomogeneous, quality is not attractive in appearance.

The purpose of this utility model is at above deficiency, improves the utilization efficiency of coatings of aerial spraying, reduces environmental pollution, and coating is repeatedly atomized, and improves its coating quality.

The utility model in order to achieve the above object, air valve and paint valve are arranged on the same axis, being provided with a gas circuit in the air duct communicates with pressurized tank, pressure cover is connected with the screw-type that is connected to of pressurized tank, can bear 0.3～0.5MPa air pressure, apply power force feed coating by this gas circuit to pressurized tank, portion of air penetrates from air nozzle, and air nozzle can guarantee that coating carries out three atomizings.The jet hole center is provided with ring-like hole coating is atomized for the first time, and orifice is oppositely to flatten hole and protection hole for the second time, and orifice is lateral opening for the third time.The coating cloud fan governor runs through air duct, is made of slide core, O-ring seals and a holder, and lateral opening throughput size is regulated in the slide core turnover.

The utility model is by above technical scheme; will be originally be used as power to inhale and penetrate coating and change into and directly exerting pressure with negative pressure; technology is simple; by the ring-like hole of this spray gun, oppositely flatten the hole, lateral opening and the protection hole coating is repeatedly atomized, thereby improved the utilization rate and the coating quality of coating, reduced the pollution of environment; the coating cloud fan governor is simple in structure; can obtain the coating cloud of broad, coating cloud is thin, and coating is difficult for producing sagging.

Fig. 1 is the utility model one example structure schematic diagram;

Fig. 2 is the A-A cutaway view of air duct;

Fig. 3 is the air nozzle front view;

Fig. 4 is the air nozzle vertical view;

Referring to accompanying drawing; drive air valve 5 earlier; open paint valve 3 again; exert pressure to pressurized tank 6 by this branch's gas circuit 7; force feed goes out coating; the air duct portion of air atomizes by the looping pit 10 formation cannelures that jet hole hits exactly for the first time by the coating of air nozzle 1 with paint spray nozzle 2 force feeds; atomizing for the second time is to form under reverse flattening hole 11 around jet hole and the effect of protecting hole 9, and the big young pathbreaker's coating of lateral opening 8 gas outputs that coating cloud fan governor 4 is regulated slide core turnover control nozzle both sides atomizes once more.

Claims

1, a kind of pressure sending type air gun that is used for the field of coating use; comprise air nozzle (1), paint spray nozzle (2), paint valve (3), air valve (5), pressurized tank (6) and rifle body; it is characterized in that: air valve (5) is arranged on the same axis with paint valve (3); being provided with a gas circuit in the air duct communicates with pressurized tank (6); air nozzle mouth center is provided with ring-like hole (10); be provided with reverse flattening hole (11) and protection hole (9) around jet hole, lateral opening (8) are arranged on the nozzle side.

2, pressure sending type air gun as claimed in claim 1 is characterized in that pressure cover is connected for screw-type with pressurized tank (6).

3, pressure sending type air gun as claimed in claim 1 or 2 is characterized in that coating cloud fan governor (4) runs through air duct, is made of slide core, O-ring seals and holder.