CN2034876U - Sprayer - Google Patents

Abstract

The utility model discloses a spraying gun which is composed of a gun handle, a control trigger, an atomizing device, a paint-mist-shaped regulation device, an air-paint valve regulation device, a paint supplying device, etc. The spraying gun has the advantages of simple structure, easy fabrication and convenient operation, paint can be supplied up and down, and the spraying gun is suitable for many places which are coated with paint and oil layers.

Description

Sprayer

The utility model relates to a kind of spraying gun, is applicable to the occasion of spraying lacquer class and other oils coating.

Existing spraying gun (see figure 1) is mainly by atomizing, the coating cloud shape adjustments, the adjustment of lacquer valve, air valve, for lacquer, six parts such as pikestaff are formed, after canister (12) is filled paint, the air delivery pipe and the air inlet pipe (19) that will have certain pressure are connected, and pull trigger (20), promote air valve stopper rod (17), compressed air enters the outer shroud of lacquer amount adjustment hole (7) through air valve spacer (15) and taper hole, afterwards, enter the horizontal gas circuit (23) of main body (21), a part of gas enters the hole on the coating cloud shape adjustment valve (22), centre bore ejection from gas jets (2) two ends, make nozzle (1) center produce negative pressure, trigger (20) moves after continuing, and promotes needle handle (9), pin (8) moves backward, open canister, paint produces coating cloud under negative interaction.Under the compressed air of gas jets (2) two ends aperture ejection is intervened, make quick proal coating cloud become the fan-shaped surface of the work that is sprayed onto and form coating.

The shortcoming of this device is: only can be suitable for down for the lacquer occasion, volume is big, weight is big, complex structure, cost height, operation are inconvenient.

Task of the present utility model is to overcome the above-mentioned shortcoming in the prior art, design a kind of can be up and down for lacquer, simple in structure, the spraying gun that volume is little.

The key of solution task is: partly adopt two logical parts to replace gas-separating valve of the prior art in the coating cloud shape adjustments, the compressed air in the air channel is connected at last both sides and atomised part for the lacquer hole.Thereby not only guaranteed the reliability of coating cloud shape adjustments, also realized supplying up and down the purpose of lacquer, adopted spool member in gas lacquer valve adjustment member, realized the orthoscopic assembling of air valve with lacquer valve and adjusting part, reached reduced volume, simplified structure is processed the purpose of being convenient to operate with being easy to.

Description of drawings:

Fig. 1 is the structural representation of prior art spraying gun.

Fig. 2 is a main pseudosection of the present utility model.

Fig. 3 is that Fig. 2 B-B is to cross sectional plan view.

Fig. 4 is gas lacquer valve adjustment member structural representation.

But Fig. 5 is two logical a few shape schematic diagrames of 24 different embodiment.

Fig. 6 and the different example structure schematic diagrames of Fig. 7 for gas lacquer valve adjustment member.

Among Fig. 2 to Fig. 7:

1-wind nozzle 2-nozzle 3-pressure cap 4-transfers the painting hole 22-needle-valve 23-sealing gasket 24-two logical 25-wind locking 26-sealing gasket 27-adjusting bolt 28-spring 29-main body 30a-outer shroud 30b-center mounting hole 31-32-of nozzle center horizontal air channel 33-two ends aperture 34-upper painting hole 35-air drain 36a, 36b, 36c-hole 37-central air chamber 38-screw 39-cushion 40-two logical centre bore 41-bellmouth 42-internal taper hole valve body 43-sealing ring 44-ventilation duct 45-locking cap 46-blast pipes under the stifled 21-of valve 14-valve pocket 15-round section joint ring 16-blast pipe 17-plate machine 18-sealing ring 19-nut 20-stop-off lacquer for paint can 5-inner bolt 6-sealing gasket 7-pin 8-sliding sleeve 9-plug 10-guiding valve 11-spring 12-needle handle 13-lacquer

In conjunction with the accompanying drawings, narrate embodiment of the present utility model:

Spraying gun described in the utility model mainly contains atomizing, the coating cloud shape adjustments, and gas, the adjustment of lacquer valve are formed for four parts such as lacquers.

Show that as Fig. 2 and Fig. 3 atomised part is by nozzle 2, gas jets 1, pressure cap 3 is formed with the corresponding site of main body 29.Nozzle 2 and main body 29 contact with thread forms.Gas jets 1 is enclosed within on the nozzle 2, contact with the external cylindrical surface of nozzle 2, the core jet pipe of nozzle 2 stretches out in the central small hole of gas jets 1, and the branch air drain 35 on the two ends aperture 33 of gas jets 1 and the main body 29 reduction of fractions to a common denominator air drain 35 is mutually connected by dividing pore 36a and two logical 24 centre bores 40.Gas jets 1 usefulness nut 3 is pressed in the end face at main body 29 atomizing positions, and the big step of nozzle 2 and the respective step of the central air chamber 37 on the main body 29 contact, and central air chamber 37 communicates through minute pore 36b and 36c and two logical 24.Be evenly equipped with six apertures on the big step of nozzle 2, be used to make gas to enter the gas jets center equably.

The main member of coating cloud shape adjustment part (seeing Fig. 2 and Fig. 3) has two to lead to 24, sealing gasket 23,26, wind locking 25, needle-valve 22 and main body appropriate section.The centre bore 40 of two logical 24 1 ends is connected with mounting center hole 20b, and the other end is connected with hole in wind locking 25 ends of thread.Wind locking 25 is tightened in the installing hole on the main body 29, and sealing gasket 23 and 26 is contained in this installing hole respectively and end face, seals.Cork on adjustment screw 27 and the needle-valve 22 and two logical 24 bellmouth 41 contact, and open this bellmouth, and a compressed air part can enter gas blowout through this hole and chew 1 two ends aperture 33.Two lead to 24 outer shroud 30 and laterally air channel 32 connections, and compressed air can divide pore 36b and 36c to air chamber 37 directly through horizontal air channel 32, outer shroud 30a, and six uniform holes enter the aperture ejection of wind nozzle center on nozzle 2 then.

Two logical 24 can adopt geometry shown in Figure 5, that is, its profile can be a cylinder, also can be polygonal body.Among Fig. 5, be that profile is that two of two square combinations are led to (a); (b) be profile be cylinder combine with gengon two logical; (c) be cylinder combine with cylinder two logical.

The critical piece (showing as Fig. 2 and Fig. 4) of gas lacquer valve adjustment member has pin 7, inner bolt 5, and guiding valve 10, plug 9, big spring 11, lacquer is transferred valve 13 etc.One end of inner bolt 5 is spun in the main body 29, and the other end is connected with nut 19, and sealing ring 6 and 18 is located at the two ends of inner bolt 5 respectively.In order to completely cutting off of realization body 29 inside and outside gases.Sliding sleeve 8 is enclosed within on the pin 7, one end contacts with plate machine 17, the other end contacts with plug 9, sliding sleeve 8 has a groove with plug 9 ends that contact, the boss of guiding valve 10 is in the groove of sliding sleeve 8, one end face of plug 9 leans against on the boss rank of guiding valve 10, and its male cone (strobilus masculinus) contacts with the main body 29 corresponding conical surfaces, and this contact conical surface plays the effect of spraying gun air circuit breaker.The other end of guiding valve 10 has a groove, wherein is placed with rubber ring 15, contacts with valve pocket 14 by rubber ring 15, realizes the sealing of air flue and guiding valve 10 and valve pocket 14 hollow parts.The tapering point of pin 7 is contained in the needle handle 12, and the shank of needle handle 12 is with spring 28, and the end is stretched into lacquer and transferred among the valve 13, the rotation lacquer is transferred valve 13, can adjust the gap 35 between guiding valve 10 and the needle handle 12, gap 35 is big, when pulling trigger, nozzle 2 to go out the lacquer amount little, gap 35 is little, and it is then big to go out the lacquer amount, screws off lacquer and transfers valve 13, can be with spring 28, needle handle 12 and pin 7 take out from main body 29. Spring 11 and 28 resets each parts when playing loosening trigger 17.Lacquer is transferred on the valve 13 and is had aperture, in order to emit the unnecessary gas of 14 li of valve pockets.

Fig. 6 and Fig. 7 are two other embodiment of gas lacquer adjustment member.Among Fig. 6, can remove plug 9, plug 9 is increased by guiding valve 10 delays replacement, and internal taper hole valve body 42 contacts with the inclined-plane of guiding valve 10, and sealing ring 43 contacts in internal taper hole valve body 42 terminations and internal taper hole valve body.The long outer radius portion of guiding valve 10 also can be made into cylindric.Guiding valve 10 and sliding sleeve 8 contacts site also can be made into boss shape as shown in Figure 7, and lock nut 45 is threaded onto on the pin 7 with thread forms, in order to pin 7 is fixed on the needle handle 12.

For coating with lacquer part: coat with lacquer for supplying up and down for the lacquer mode.Between the gentle lacquer adjustment member of atomised part, adopt bolt to realize being connected with paint can.The last lacquer hole 34(that supplies sees Fig. 2 and Fig. 1) between minute pore 36b and 36c, connect with nozzle 2, jar is for the lacquer path on the formation, following corresponding with last lacquer 34 positions, hole that supply for lacquer hole 21, also connect with nozzle 2, when supplying lacquer on the need, mounting screw 38 and the screwed lacquer hole 34 that supplies screw on the jar, and will descend for blocking in lacquer hole 21 with bolt, otherwise, will go up for lacquer hole 34 and block, will connect for paint can and the following lacquer hole that supplies.Stop-off lacquer stifled 20 and cushion 39 are enclosed within on the pin 7 in down for lacquer hole bolt 21, leak outside from spraying gun in order to prevent paint.

The utility model is stated the course of action of spraying gun: air inlet 16 and compressed air are connected, the blast pipe 46 of compressed air in being located at the operation pikestaff enters horizontal air channel 32, pull trigger 17, sliding sleeve 8 moves backward, promote plug 9, guiding valve 10, make spring 11 compressions, compressed air enters horizontal air channel 32 from blast pipe 16, portion of air sprays fast by the two ends aperture 33 that two logical 24 centre bore 40 enters wind nozzle 1, another part leads to 24 outer shroud 30a through two, six uniform apertures enter the center of wind nozzle 1 around hole 36b and 36c and nozzle 2, from the centre bore ejection, make nozzle 2 centers produce negative pressure.Trigger 17 moves after continuing, and makes step in the guiding valve 10 near needle handle 12 and promote to move behind the needle handle 12, pin 7 open nozzles 2 for the lacquer hole, the lacquer road is connected.Paint sprays under the effect of atmospheric pressure, deadweight and nozzle 2 central negative pressure.Under the effect of compressed air ejection power and air molecule phase repulsive interaction, paint mixes with air and produces coating cloud.Under the gas of gas jets one two ends aperture 33 ejection is intervened, make fast forward coating cloud become the covering of the fan shape and be sprayed on and form coating on the workpiece.

Can regulate two logical 24 compressed-air actuated pressure by the position (promptly rotating coating cloud screw 27) of metering pin valve 22,, make the fan-shaped plan of coating cloud change size, even become round shape coating cloud so that close the moving air in two logical 24.

Loosening plate machine 17, under spring 28 and 11 effects, needle handle 12 and pin 7 reaches, supplying on the shut-off nozzle 2 coated with lacquer the hole, and guiding valve 10 reaches promote plug 9, and each parts resets, and air valve is closed.In the whole course of action, during unlatching, open wind path earlier, the lacquer road is opened in the back, when closing, otherwise then.

Be compared with existing technology, the utility model has the advantage of: removed spacer in the prior art, air valve spacer equal-volume is big, weight is big, the correlation size is tight, the parts that the machined difficulty is big, whole apparatus structure is simple, the processing assembling is easy, and volume is little, in light weight, also greatly reduce production cost. The utility model adopts up and down painting, is suitable for multiple occasion and uses.

Claims (3)

1, a kind of spraying gun is enclosed within on the nozzle 2 by gas jets 1, with nut 3 gas jets 1 is pressed on the main body 29 to constitute atomised part; Constitute for the lacquer part for paint can 4 with for the lacquer hole, air inlet 16 and main body 29 corresponding pikestaffs parts and the blast pipe 46 that is located in the pikestaff constitute intake adits, trigger 17 at pikestaff with down for the lacquer hole between and pikestaff formation operation part, it is characterized in that:

(1) upward is located between branch pore 36b and the 36c for lacquer hole 34, two logical 24 top, the following below that is located at pin 7 for lacquer hole 21, with last corresponding, be located among the body 29 for lacquer Kong Jun up and down, and connect with nozzle 2 for lacquer hole 34, screw 38 be connected for lacquer hole double-screw bolt up and down, be enclosed within on the pin 7, stop-off lacquer stifled 20 and cushion 39 are in down for lacquer hole 21, and pin 7 slides in stifled and cushion 39 centre bores at stop-off lacquer.

The centre bore of (2) two logical 24 1 ends and installing hole 30a connect, the other end and wind locking 25 are threaded, wind locking 25 is tightened in the installing hole on the main body 29, and sealing gasket 23 and 26 is contained in this installing hole respectively and end face, and the cork on adjustment screw 27 and the needle-valve 22 and two leads to 24 bellmouth and contacts.

(3) end of inner bolt 5 is spun in the main body 29, the other end is connected with nut 19, sealing ring 6 and 18 is located at the two ends of inner bolt 5 respectively, sliding sleeve 8 is enclosed within on the pin 7, one end contacts with plate machine 17, and the other end contacts with plug 9, and sliding sleeve 8 is fluted with plug 9 ends that contact, the boss and the groove of guiding valve 10 match, one end face of plug 9 leans against on the boss step of guiding valve 10, and its male cone (strobilus masculinus) contacts with the main body 29 corresponding conical surfaces, and the other end of guiding valve 10 has a groove, wherein be provided with rubber ring 15, valve pocket 14 contacts of rubber ring 15, the tapered end face of pin 7 is contained in the needle handle 12, installing spring 28 on the handle of needle handle 12, pommel stretches into lacquer and transfers in the valve 13, and lacquer transfers valve 13 and valve pocket 14 to be threaded.

2, spraying gun according to claim 1 is characterized in that described two logical 24 profile can be combination or two cylindrical combinations of two squares, also can be the combination of cylinder and gengon.

3, spraying gun according to claim 1, it is characterized in that the end that described guiding valve 10 contacts with sliding sleeve 8, can make boss shape, groove shape or rectangle, when making boss shape, plug 9 is housed on its boss step, plug 9 has a tapered slope, when becoming groove shape or rectangle, valve 10 itself has tapered slope.

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