阅读说明：本技术 一种气幕喷头及应用该气幕喷头的喷涂枪 (Air curtain spray head and spraying gun applying same ) 是由 吴哲军 何仁杰 马继华 李猛 陈昌洁 于 2019-11-13 设计创作，主要内容包括：本发明涉及一种气幕喷头及应用该气幕喷头的喷涂枪,其包括用于喷射涂料的主喷头,主喷头的外侧壁上设置有环绕主喷头的气流件,气流件用于喷射气流并形成限制主喷头喷射涂料范围的气幕空间,本发明通过设置气流件,以形成范围性的气幕空间,使得主喷头所喷出的涂料在所形成的气幕空间范围内进行喷射,以减少涂料喷洒至被涂物上无需喷涂的表面,进而可减少涂料的浪费,同时可减少所浪费涂料的挥发,以减少对环境的污染,有利于环保。(The invention relates to an air curtain spray head and a spray gun using the air curtain spray head, which comprises a main spray head for spraying coating, wherein an air flow piece surrounding the main spray head is arranged on the outer side wall of the main spray head, and the air flow piece is used for spraying air flow and forming an air curtain space for limiting the range of the main spray head for spraying the coating.)

1. An air curtain shower nozzle which characterized in that: including main shower nozzle (1) that is used for spraying coating, be provided with on the lateral wall of main shower nozzle (1) and encircle air current spare (2) of main shower nozzle (1), air current spare (2) are used for spraying the air current and form the restriction air curtain space (5) of main shower nozzle (1) spray coating scope.

2. The gas curtain showerhead of claim 1, wherein: the air flow piece (2) comprises a plurality of air flow spray pipes (3) surrounding the main spray head (1), and the air flow spraying direction of the air flow spray pipes (3) is the same as the direction of the main spray head (1) for spraying the coating.

3. The gas curtain showerhead of claim 2, wherein: an air channel (9) is formed in the main spray head (1), the airflow spray pipe (3) is communicated with the air channel (9), and the air channel (9) is communicated with an air source.

4. The gas curtain showerhead of claim 3, wherein: airflow nozzle (3) includes body (31), air inlet (32) and air jet (33) have been seted up at the both ends of body (31), air inlet (32) intercommunication air vent (9), it is a plurality of air jet (33) orientation the direction that main shower nozzle (1) jetted coating, and a plurality of the air current jet direction of air jet (33) with the coating jet direction of main shower nozzle (1) parallels.

5. The gas curtain showerhead of claim 4, wherein: the main sprayer (1) comprises a spray pipe (11) and a nozzle opening (12) arranged at one end of the spray pipe (11), the horizontal plane where the plurality of air nozzles (33) are located is parallel to the horizontal plane where the nozzle opening (12) is located, and the vertical distance from the center of the air inlet (32) to the horizontal plane where the plurality of air nozzles (33) are located is larger than the vertical distance from the center of the air inlet (32) to the horizontal plane where the nozzle opening (12) is located.

6. The gas curtain showerhead of claim 2, wherein: the airflow spray pipes (3) are communicated with an air source.

7. The gas curtain showerhead of claim 1, wherein: the airflow piece (2) comprises an airflow ring (4) sleeved on the main spray head (1), an annular opening (41) is formed in the side wall of the airflow ring (4), and the annular opening (41) faces the direction of spraying the coating on the main spray head (1).

8. The gas curtain showerhead of claim 7, wherein: a connecting air passage (42) is formed in the main spray head (1), the annular opening (41) is communicated with the connecting air passage (42), and the connecting air passage (42) is communicated with an air source.

9. The gas curtain showerhead of claim 7, wherein: the annular opening (41) is communicated with a gas source.

10. The utility model provides an use spray gun of this air curtain shower nozzle which characterized in that: the air curtain nozzle comprises the air curtain nozzle as claimed in any one of claims 1 to 9, and further comprises a gun body (6), a paint pot (7) and an air inlet connector (8), wherein the main nozzle (1) is arranged at one end, far away from the air inlet connector (8), of the gun body (6), the air inlet connector (8) is communicated with an air source, the paint pot (7) comprises a pot body (71) arranged on the main nozzle (1), a spraying port (72) is arranged on the pot body (71), and the paint spraying direction of the spraying port (72) is the same as the air flow spraying direction of the nozzle (12).

Technical Field

The invention relates to the technical field of spray guns, in particular to an air curtain spray head and a spray gun using the air curtain spray head.

Background

The spray gun mainly comprises a spray cap, a nozzle opening, a needle valve and a gun body, and is externally connected with a compressed air source such as a pressure tank, so that the paint is atomized into fine paint drops by compressed air during working and is sprayed onto the surface of an object to be coated under the drive of airflow.

The existing spray gun, such as a multifunctional spray gun disclosed in the publication No. CN201558765U, is sequentially provided with a feed needle adjusting device, an air valve, an amplitude adjusting device, a feeding mode switching device, a nozzle, an air separating ring and a flow cap along an air flow channel in a gun body; they form a gas passage with the gun body from the gas inlet joint to the flow cap; the amplitude adjusting device is communicated with the air inlet joint through a pipeline; the material needle adjusting device is positioned at the rear end of the gun body; a feeding conversion device is arranged on the side surface of the front end of the gun body; the flow cap comprises a flow cap with an angle lug and a flow cap with a straight groove and a circular hole.

The above prior art solutions have the following drawbacks: when the spraying gun is used for spraying, compressed air enters the gun body from the air inlet joint, enters the amplitude adjusting device through the air valve, and is divided into a main air flow and an auxiliary air flow through the amplitude adjusting device, the main air flow is sprayed out from a gap between the nozzle and the flow cap and sucks paint out from the coating kettle, the auxiliary air flow is sprayed out from the two corner ears and atomizes the paint to form an even spraying amplitude so as to realize the spraying of the surface of a coated object, however, in the process of sucking the paint out from the coating kettle and spraying, the paint can be dispersed all around when sprayed out from the nozzle, in the dispersing process, the paint is easily sprayed to the range of the coated object which does not need to be sprayed, and further the paint is wasted.

Disclosure of Invention

It is an object of the present invention to provide an air curtain spray head having the advantage of reducing paint waste.

The above object of the present invention is achieved by the following technical solutions: an air curtain spray head comprises a main spray head used for spraying paint, wherein an air flow piece surrounding the main spray head is arranged on the outer side wall of the main spray head, and the air flow piece is used for spraying air flow and forming an air curtain space for limiting the range of the main spray head for spraying the paint.

By adopting the technical scheme, the coating carries out the spun in-process through main shower nozzle, air current piece can produce the air current to coating blowout direction simultaneously, and form the air curtain space of scope nature, make main shower nozzle spun coating spray in the air curtain space scope that forms, spray in order to the required scope of object surface to be coated, spray to the surface that need not the spraying on the object to be coated with the reduction coating, and then reducible coating's waste, the volatilization of the extravagant coating of reducible while, in order to reduce the pollution to the environment, be favorable to the environmental protection.

The invention is further configured to: the airflow piece comprises a plurality of airflow spray pipes surrounding the main spray head, and the airflow spray pipes spray airflow in the same direction as the main spray head sprays the coating.

Through adopting above-mentioned technical scheme, through setting up the airflow spray pipe of many encircles main shower nozzle for the corresponding air curtain space of air current formation around main shower nozzle of spun in every airflow spray pipe, with the spray range of restriction coating, reduce the waste of coating.

The invention is further configured to: an air channel is formed in the main nozzle, the airflow spray pipe is communicated with the air channel, and the air channel is communicated with an air source.

By adopting the technical scheme, the air passages in the main spray head are connected with the air flow spray pipes and then communicated with the air source through the air passages, so that one air source can simultaneously provide the air flow required by the air curtain space and the air flow required by the paint spraying, and the resource saving is facilitated.

The invention is further configured to: the airflow spray pipe comprises a pipe body, wherein an air inlet and air nozzles are formed in two ends of the pipe body, the air inlet is communicated with the air duct, the air nozzles face the direction of spraying the coating by the main spray head, and the airflow spray directions of the air nozzles are parallel to the coating spray direction of the main spray head.

By adopting the technical scheme, the air flow spraying direction of the air jet is set to be parallel to the spraying direction of the coating, so that the coating keeps spraying in a horizontal state after entering an air curtain space formed by the air flow, the scattering of the coating is reduced, and the coating can be sprayed to the range limited by the coated object.

The invention is further configured to: the main spray head comprises a spray pipe and a nozzle opening arranged at one end of the spray pipe, the horizontal plane where the plurality of air nozzles are located is parallel to the horizontal plane where the nozzle opening is located, and the vertical distance from the center of the air inlet to the horizontal plane where the plurality of air nozzles are located is larger than the vertical distance from the center of the air inlet to the horizontal plane where the nozzle opening is located.

By adopting the technical scheme, the distance from the air injection port to the surface of the object to be coated is larger than the distance from the nozzle port to the surface of the object to be coated, so that the coating can firstly generate a certain injection amount when being sprayed out from the nozzle port and then enters the air curtain space to inject the surface of the object to be coated.

The invention is further configured to: and the airflow spray pipes are communicated with an air source.

Through adopting above-mentioned technical scheme, all communicate the air supply with many air current spray pipes to carry out the independent control to air current velocity of flow, flow etc. in the air current spray pipe.

The invention is further configured to: the airflow piece comprises an airflow ring sleeved on the main spray nozzle, the side wall of the airflow ring is provided with an annular opening, and the annular opening faces to the direction of spraying the coating by the main spray nozzle.

Through adopting above-mentioned technical scheme, through setting up the air current ring for corresponding air curtain space is formed around main shower nozzle to the air current of spouting, with the jet range of restriction coating, reduces the waste of coating, and the air curtain space that the air current of annular opening spun simultaneously formed is inseparabler.

The invention is further configured to: and a connecting air passage is arranged in the main nozzle, the annular opening is communicated with the connecting air passage, and the connecting air passage is communicated with an air source.

By adopting the technical scheme, the annular opening is communicated with the connecting air passage, so that one air source can simultaneously provide the air flow required by the air curtain space and the air flow required by the paint spraying, and the resource saving is facilitated.

The invention is further configured to: the annular opening is communicated with an air source.

Through adopting above-mentioned technical scheme, communicate the air supply alone with annular opening to carry out the independent control to annular open-ended air current velocity of flow, flow etc..

Another object of the present invention is to provide a spray coating gun using the air curtain nozzle, which has the advantage of reducing coating waste.

The above object of the present invention is achieved by the following technical solutions: the utility model provides an use spraying gun of this air curtain shower nozzle, includes the air curtain shower nozzle, still include the rifle body, coating kettle and air inlet joint, main shower nozzle set up in the rifle body is kept away from air inlet joint's one end, air inlet joint intercommunication air supply, the coating kettle including set up in the kettle body on the main shower nozzle, be equipped with the spout mouth on the kettle body, the coating injection direction of spout mouth is the same with the air current injection direction of nozzle mouth.

Through adopting above-mentioned technical scheme, through setting up corresponding air curtain shower nozzle on the spray gun to reduce the waste of spray gun sprayed coating.

In conclusion, the beneficial technical effects of the invention are as follows:

the air flow piece is arranged to form a range air curtain space, so that the coating sprayed by the main spray head is sprayed in the range of the formed air curtain space, the surface of the coated object which is not required to be sprayed with the coating is reduced, and the waste of the coating is reduced;

the air flow spraying direction of the air jet is set to be parallel to the spraying direction of the coating, so that the coating is kept to be sprayed in a horizontal state, the scattering of the coating is reduced, and the waste of the coating is further reduced.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of the first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of a second embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of a third embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a fourth embodiment of the present invention.

Fig. 8 is a schematic sectional structure diagram of a fourth embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a fifth embodiment of the present invention.

In the figure, 1, a main nozzle; 11. a nozzle; 12. a nozzle opening; 13. a connecting rod; 2. an airflow member; 3. an airflow nozzle; 31. a pipe body; 32. an air inlet; 33. an air jet; 4. an airflow ring; 41. an annular opening; 42. connecting an air passage; 43. conducting an air passage; 5. an air curtain space; 6. a gun body; 7. a paint kettle; 71. a kettle body; 72. a material spraying port; 8. an air inlet joint; 9. an air duct.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.