CN103008135A

CN103008135A - Spray gun

Info

Publication number: CN103008135A
Application number: CN2013100034361A
Authority: CN
Inventors: 迪恩荷波尔; 本伍德林
Original assignee: Earlex Ltd
Current assignee: Earlex Ltd
Priority date: 2013-01-06
Filing date: 2013-01-06
Publication date: 2013-04-03

Abstract

A spray gun comprises an air passage, a needle-shaped article and a liquid passage, wherein a gas hood is arranged at the front end of the air passage; a central hole and at least one pair of raised gas angles are formed on the gas hood; gas spray holes are formed in the gas angles; a nozzle is arranged at the front end of the liquid passage; a liquid spraying hole is formed in the nozzle; the needle-shaped article is arranged in the liquid passage; and a gap extending to the gas angle is formed in the side wall of the central hole. The gap extends to the gas angles, so that gas sprayed in the central hole can be partially guided to the gas angles and coatings sprayed out from the interior of the nozzle are also driven to spread to the directions of the gas angles; and through the mutual effect of the gas spray holes in the gas angles, the coatings can be more uniformly dispersed and the spray range of the coatings is also greatly enlarged.

Description

Spray gun

Technical field

The present invention relates to a kind of spray gun.

Background technology

In general, spray gun comprises air duct, spicule and fluid passage, the front end of described air duct is provided with gas hood, be provided with medium pore and at least one pair of protruding air horn on the described gas hood, be provided with fumarole on the described air horn, the front end of described fluid passage is provided with shower nozzle, be provided with spray hole on the described shower nozzle, described spicule is arranged in the described fluid passage, in our British Patent No. is 2468196 and 2469587 patent, we have described the improvement of gas cap and the spicule of this type of air gun, to the larger improvement of having had of spray pattern.

During use, the gas from medium pore from ejection directly is straight line and sprays forward, and the coating that drives ejection in the shower nozzle penetrates, the shape of the gas and changing coating of the fumarole ejection on the air horn, and finish dispersion to coating.Because the medium pore of traditional spray gun all is a circular hole, ejection coating is too concentrated, and the gas of air horn ejection has little time to disperse, and causes spraying inhomogeneous, and the scope of spraying is wideless yet.

Summary of the invention

The present invention is directed to deficiency of the prior art, a kind of spray gun is provided, spraying evenly and greatly increases the scope that sprays.

For solving the problems of the technologies described above, the present invention is solved by following technical proposals: spray gun, comprise air duct, spicule and fluid passage, the front end of described air duct is provided with gas hood, be provided with medium pore and at least one pair of protruding air horn on the described gas hood, be provided with fumarole on the described air horn, the front end of described fluid passage is provided with shower nozzle, be provided with spray hole on the described shower nozzle, described spicule is arranged in the described fluid passage, and the breach that extends towards described air horn is arranged on the described medium pore sidewall.

In the technique scheme, preferred, the front end of the sidewall of described shower nozzle has two inclined-planes, and two described inclined-planes are acute angle.

In the technique scheme, preferred, described air horn has two pairs, four described air horns circumferentially evenly distributing along described gas hood.

In the technique scheme, preferred, also comprise a current divider, described current divider is rotatably connected on the inwall of described air duct, and described current divider one end face contacts with described gas hood.Described current divider separates described gas hood and described air duct, is provided with tap hole on the described current divider, described tap hole be communicated with described air duct and described gas hood on fumarole.

In the technique scheme, preferred, be provided with driving lever on the described current divider, be provided with stopper slot on the described air duct, described driving lever passes described stopper slot.

In the technique scheme, preferred, described shower nozzle links to each other with described current divider.

The invention has the beneficial effects as follows: breach extends towards air horn, air horn can partly lead the gas that sprays in the medium pore, the coating that also drives simultaneously ejection in the shower nozzle spreads to the air horn direction, again in conjunction with the acting in conjunction of the fumarole on the air horn, that coating can be disperseed is more even, has also greatly increased the scope of spray painting simultaneously.

Description of drawings

Fig. 1 is schematic perspective view of the present invention.

Fig. 2 is floor map of the present invention (broken section).

Fig. 3 is the local enlarged diagram of Fig. 2.

Fig. 4 is the left view (the gas hood part is not looked out) of Fig. 2.

Fig. 5 is the schematic perspective view of gas hood.

Fig. 6 is the floor map of gas hood.

Fig. 7 is the schematic perspective view of shower nozzle.

Fig. 8 is the floor map of shower nozzle.

Fig. 9 is the schematic perspective view of current divider.

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment the present invention is described in further detail: referring to Fig. 1 to Fig. 9, spray gun, comprise air duct 1, spicule 2, fluid passage 3 and current divider 6, the front end of air duct 1 is provided with gas hood 4, gas hood 4 is fixed on the front end of air duct 1 by nut 7, form 42, four air horns 42 of air horn of 41 two pairs of projections of medium pore on the gas hood 4 along the circumferentially evenly distribution of gas hood 4, form two fumaroles 43 on each air horn 42.The front end of fluid passage 3 is fixed with a shower nozzle 5, forms spray hole 51 on the shower nozzle 5, and spray hole 51 is communicated with described fluid passage 3 and the external world.The front end of the sidewall of shower nozzle 5 has two inclined-

planes

52,53, two inclined-

planes

52,53 to be acute angle.Spicule 2 is arranged in the fluid passage 3, and the breach 44 that extends towards air horn 42 is arranged on medium pore 41 sidewalls.Referring to Fig. 6, breach 44 has four, and the sidewall of each breach 41 is arc, and each arc protrudes towards a breach 41.Current divider 6 is rotatably connected on the inwall of air duct 1, and current divider 6 one end faces contact with gas hood 4.Current divider 6 separates gas hood 4 and air duct 1, forms tap hole 61 on the current divider 6, tap hole 61 be communicated with air duct 1 and gas hood 4 on fumarole 43.Form driving lever 62 on the current divider 6, moulding stopper slot 11 on the sidewall of air duct 1, driving lever 62 passes stopper slot 11.Form draw-in groove 54 on the shower nozzle 5, form fixture block 63 on the current divider 6, described draw-in groove 54 inserts in the fixture block 63.Spicule 2 is movably connected in the fluid passage 3, and the front end of spicule 2 matches with described spray hole 51, is provided with support plate on the spicule 2, and gripper shoe 21 fits with fluid passage 3 inwalls.

During use, gases at high pressure in the gas channel 1 spray from medium pore 41 and the fumarole 43 of gas hood 4 respectively, the gas that wherein from medium pore 41, sprays, after the guiding through shower nozzle 5 ramps, the place is converged in one of formation before spray hole 51, and the zone of spray hole 51 front ends forms vacuum, when spicule 2 shrinks back, liquid in the fluid passage 3 is sucked out under the effect of negative pressure, and along with the gas of medium pore 41 interior ejections penetrates.Simultaneously, the gas and changing of fumarole 43 interior ejections the shape of the liquid that penetrates.When gas sprays from medium pore, be directed to four air horn 42 places behind the portion gas by breach 44, the coating that also drives simultaneously ejection in the shower nozzle spreads to the air horn direction, again in conjunction with the acting in conjunction of the fumarole on the air horn, that coating can be disperseed is more even, has also greatly increased the scope of spray painting simultaneously.

Claims

1. spray gun, comprise air duct (1), spicule (2) and fluid passage (3), the front end of described air duct (1) is provided with gas hood (4), be provided with medium pore (41) and air horn (42) that at least one pair of is protruding on the described gas hood (4), be provided with fumarole (43) on the described air horn (42), the front end of described fluid passage (3) is provided with shower nozzle (5), be provided with spray hole (51) on the described shower nozzle (5), described spicule (2) is arranged in the described fluid passage (3), it is characterized in that: the breach (44) that extends towards described air horn (42) is arranged on described medium pore (41) sidewall.

2. according to claim 1 described spray gun, it is characterized in that: the front end of the sidewall of described shower nozzle (5) has two inclined-planes (52,53), and two described inclined-planes (52,53) are acute angle.

3. according to claim 1 described spray gun, it is characterized in that: described air horn (42) has two pairs, and four described air horns (42) circumferentially evenly distribute along described gas hood (4).

4. according to claim 3 described spray guns, it is characterized in that: also comprise a current divider (6), described current divider (6) is rotatably connected on the inwall of described air duct (1), described current divider (6) one end faces contact with described gas hood (4), described current divider (6) separates described gas hood (4) and described air duct (1), be provided with tap hole (61) on the described current divider (6), described tap hole (61) be communicated with described air duct (1) and described gas hood (4) on fumarole (43).

5. according to claim 4 described spray guns, it is characterized in that: be provided with driving lever (62) on the described current divider (6), be provided with stopper slot (11) on the described air duct (1), described driving lever (62) passes described stopper slot (11).

6. according to claim 4 described spray guns, it is characterized in that: described shower nozzle (5) links to each other with described current divider (6).