Nozzle device for powder spraying

Abstract

The utility model provides a spray nozzle device for powder spraying, which comprises a spray gun end connecting body, a spraying connecting pipe mechanism and a spray nozzle connecting mechanism, one end of the spraying connecting pipe mechanism is movably connected with the spray gun end connecting body, and the other end of the spraying connecting pipe mechanism is connected with the spray nozzle connecting mechanism. A conveying cavity is formed in the spray gun end connecting body, the front end of the conveying cavity is communicated with the spray gun body, the rear end of the conveying cavity is communicated with the spraying connecting pipe mechanism, and the spraying connecting pipe mechanism forms an extended connecting pipeline between the spray gun end connecting body and the nozzle connecting mechanism; according to the nozzle device provided by the utility model, the conveying distance of powder in a spray gun can be increased, spraying at a long distance can be carried out, meanwhile, the powder can be uniformly dispersed, the spraying is relatively uniform, and the spraying quality and efficiency are further effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of spraying equipment, concretely relates to a nozzle device for the spray gun during powder spraying. BACKGROUND

[0002] It is known that in the field of industrial production and manufacturing, especially in the industrialized automatic processing production process, the application range of powder spraying technology has been more and more extensive, and since the spraying effect of powder spraying is superior to paint spraying process in mechanical strength, adhesion, corrosion resistance, aging resistance and the like, powder spraying has been widely applied to some workpiece production and processing fields such as automobile spraying and furniture spraying, when carrying out spraying operation in a powder spraying room, the existing powder spraying device is faced with the spraying operation of large special-shaped workpieces, since the volume of the workpiece is large, the different directions of the workpiece need to be sprayed, if the powder spraying is more uniform, the flexible movement performance of the spraying equipment is strengthened, and meanwhile, the nozzle on the spray gun also needs to be improved in detail, specifically, the existing conventional spray gun cannot spray at a slightly long distance, the conveying distance of powder in the spray gun body is short, so the spraying distance of the powder passing through the spray gun is short, meanwhile, if the powder cannot be uniformly dispersed or the spraying surface is not large enough, the quality and efficiency of spraying are not high, therefore, a nozzle device for the spray gun is needed, which can increase the conveying distance of powder, can spray at a relatively long distance, the powder spraying surface is large, the powder spraying is uniform, and the quality and efficiency of spraying are high. SUMMARY

[0003] Therefore, the utility model discloses the purpose is to provide a kind of nozzle device for powder spraying, which can increase the conveying distance of powder, can spray at a relatively long distance, the powder spraying surface is large and uniform.

[0004] To solve the above technical problems, the utility model provides a kind of nozzle device for powder spraying, including spray gun end connection body, spraying connection pipe mechanism and nozzle connection mechanism, one end of the spraying connection pipe mechanism is movably connected with the spray gun end connection body, the other end of the spraying connection pipe mechanism is connected with the nozzle connection mechanism, the conveying cavity is formed in the spray gun end connection body, the conveying cavity front end is connected with the spray gun body, the conveying cavity rear end is connected with the spraying connection pipe mechanism, the spraying connection pipe mechanism forms extension connecting pipeline between the spray gun end connection body and the nozzle connection mechanism, the spraying connection pipe mechanism is used to extend the conveying distance of powder passing through the conveying cavity, the nozzle connection mechanism is provided with powder spraying channel, the powder spraying channel is connected with extension connecting pipeline, and powder forms fan-shaped spray surface after passing through powder spraying channel.

[0005] Preferably, the spraying connecting pipe mechanism comprises an outer connecting sleeve and an inner lining powder pipe, the inner lining powder pipe is sleeved in the outer connecting sleeve, one end of the inner lining powder pipe is connected with a nozzle connecting head, a part of the nozzle connecting head is arranged between the inner lining powder pipe sleeve and the outer connecting sleeve, and the other part of the nozzle connecting head is connected with a nozzle connecting mechanism.

[0006] Preferably, one end of the spraying connecting pipe mechanism is connected with a spray gun end connecting body through a powder pipe connecting piece, the powder pipe connecting piece comprises a powder pipe connecting head and a powder pipe connecting sleeve, the other end of the inner lining powder pipe is connected with the powder pipe connecting head, a part of the powder pipe connecting head is arranged in a gap space formed between the inner lining powder pipe and the outer connecting sleeve, a part of the powder pipe connecting sleeve is connected with the outer connecting sleeve, and the other part of the powder pipe connecting sleeve is connected with the other part of the powder pipe connecting head.

[0007] Preferably, the spraying connecting pipe mechanism is provided with a cleaning blowing pipe, a wire pipe and a lacquered wire conductive wire, the cleaning blowing pipe is arranged on one side of the gap space formed between the inner lining powder pipe and the outer connecting sleeve, the wire pipe and the lacquered wire conductive wire are arranged on the other side of the gap space, and the lacquered wire conductive wire is arranged adjacent to the wire pipe below.

[0008] Preferably, the nozzle connecting mechanism comprises a nozzle connecting seat and a nozzle body, a part of the nozzle body is arranged in the nozzle connecting seat, and the other part of the nozzle body protrudes out of the nozzle connecting seat, and the nozzle body is a nozzle body provided with a one-shaped jet port in the middle.

[0009] Preferably, the nozzle connecting seat comprises a nozzle connecting sleeve and a nozzle outer sleeve, the nozzle connecting head is arranged in the nozzle connecting sleeve, the nozzle outer sleeve is connected with the nozzle connecting sleeve, one end of the nozzle connecting head is connected with the nozzle body, and the other end of the nozzle connecting head is connected with the inner lining powder pipe sleeve through a sealing connection spraying pipe front end connector.

[0010] Preferably, the spraying pipe front end connector is provided with a connecting hole channel, the connecting hole channel is provided with two left and right connecting hole channels, the nozzle connecting head is provided with an outer connecting pipe and an inner connector, a containing space is formed in the nozzle connecting sleeve, and most of the inner connector body is in interference fit with the containing space of the nozzle connecting sleeve.

[0011] Preferably, the connecting hole channel is provided with a left channel and a right channel, the right channel is used for passing the cleaning blowing pipe, the left channel is used for passing the wire pipe, the inner connector is provided with a cleaning blowing channel, the cleaning blowing channel is connected with the right channel, and the cleaning blowing gas in the cleaning blowing pipe blows towards the nozzle body after passing through the cleaning blowing channel.

[0012] Preferably, the nozzle body is further provided with a circular cover and a plug core, the plug core is arranged in the circular cover, the plug core is provided with a circular plate, and the circular plate is provided with a central hole and air holes; after part of the circular cover is connected to the nozzle connecting seat, the circular cover and the front end of the nozzle connecting seat form an annular spraying channel.

[0013] Preferably, the spray gun end connecting body comprises a connecting pipe and an outer sleeve, the connecting pipe is in sealed connection with the spraying connecting pipe mechanism, and the outer sleeve is connected to the connecting pipe.

[0014] The nozzle device for powder spraying provided by the utility model is provided with a spray gun end connecting body, a spraying connecting pipe mechanism and a nozzle connecting mechanism, the spraying connecting pipe mechanism forms an extended connecting pipeline between the spray gun end connecting body and the nozzle connecting mechanism, the spraying connecting pipe mechanism is used for extending the powder conveying distance from the conveying cavity, the nozzle connecting mechanism is provided with a powder spraying channel, the powder spraying channel is in communication with the extended connecting pipeline, the powder forms a fan-shaped spraying surface after passing through the powder spraying channel, the nozzle device provided by the utility model can increase the powder conveying distance in the spray gun, can perform spraying at a relatively long distance, the powder can be uniformly dispersed, the spraying is relatively uniform, and the spraying quality and efficiency are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the present utility model will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. The utility model is not necessarily drawn to scale in order to emphasize its functional and structural features.

[0016] Figure 1 It is a preferred embodiment schematic view of the nozzle device for powder spraying of the utility model;

[0017] Figure 2 It is a split schematic view of the embodiment of the nozzle device for powder spraying of the utility model;

[0018] Figure 3 It is an embodiment schematic view of the nozzle device for powder spraying of the utility model;

[0019] Figure 4 It is another angle schematic view of the nozzle device for powder spraying of the utility model;

[0020] Figure 5 It is a split schematic view of the nozzle device for powder spraying of the utility model.

[0021] In the figure: 1, the spray gun end connecting body; 11, the connecting pipe; 12, the outer sleeve; 2, the spraying connecting pipe mechanism; 21, the inner lining powder pipe; 22, the outer connecting sleeve; 23, the cleaning blowing pipe; 24, the wire pipe; 3, the nozzle connecting mechanism; 30, the powder spraying channel; 31, the nozzle connecting seat; 32, the nozzle connecting pipe sleeve; 33, the nozzle outer pipe sleeve; 4, the nozzle connecting head; 41, the inner connecting head; 5, the powder pipe connecting head; 6, the powder pipe connecting outer sleeve; 7, the nozzle body; 70, the circular cover body; 71, the plug core body; 72, the circular plate surface; 8, the spraying pipe front end connector; 80, the connecting hole channel. DETAILED DESCRIPTION

[0022] The technical scheme of the present application will be further described in detail below with reference to the drawings and specific embodiments, so that the person skilled in the art can better understand the present application and can implement it, but the embodiments are not as a limitation on the present application. In the present embodiment, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0023] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated as a whole, or there can be a middle element. The terms "mounting", "one end", "the other end" and similar expressions used in the present application are only for the purpose of illustration.

[0024] As Figures 1-5The embodiment provides a nozzle device for powder spraying, which comprises a spray gun end connecting body 1, a spraying connecting pipe mechanism 2 and a nozzle connecting mechanism 3. One end of the spraying connecting pipe mechanism 2 is movably connected with the spray gun end connecting body 1, and the other end of the spraying connecting pipe mechanism 2 is connected with the nozzle connecting mechanism 3. A conveying cavity is formed in the spray gun end connecting body 1, the front end of the conveying cavity is connected with a spray gun body, and the rear end of the conveying cavity is connected with the spraying connecting pipe mechanism. The spraying connecting pipe mechanism 2 forms an extended connecting pipeline between the spray gun end connecting body and the nozzle connecting mechanism, and is used for extending the conveying distance of powder passing through the conveying cavity. When the conveying distance of powder is lengthened, the powder sprayed from the nozzle can be sprayed farther. The nozzle connecting mechanism 3 is provided with a powder spraying channel 30, the powder spraying channel 30 is connected with the extended connecting pipeline, and the powder forms a fan-shaped spraying surface after passing through the powder spraying channel. The powder spraying channel 30 can be a linear opening or a circular annular gap ring, and the linear or circular annular spraying channel can make the powder spraying surface larger.

[0025] As shown in the further preferred embodiment, Figures 1-3 the spraying connecting pipe mechanism 2 comprises an outer connecting sleeve 21 and an inner lining powder pipe 22. The inner lining powder pipe 21 is sleeved into the outer connecting sleeve 22. One end of the inner lining powder pipe 21 is connected with a nozzle connecting head 4. Part of the nozzle connecting head 4 is arranged between the inner lining powder pipe 21 and the outer connecting sleeve 22. The other part of the nozzle connecting head 4 is connected with a nozzle in the nozzle connecting mechanism. Specifically, in the embodiment, the length of the inner lining powder pipe 21 and the outer connecting sleeve 22 is 20 mm, which is used for extending the conveying distance of powder between the spray gun body and the nozzle, so that the powder can be sprayed farther.

[0026] As shown in the further preferred embodiment, Figures 1-3 in the preferred embodiment, one end of the spraying connecting pipe mechanism 2 is connected with the spray gun end connecting body through a powder pipe connecting piece. The powder pipe connecting piece comprises a powder pipe connecting head 5 and a powder pipe connecting sleeve 6. The other end of the inner lining powder pipe 21 is connected with the powder pipe connecting head 5. Part of the powder pipe connecting head 5 is arranged in the gap space formed between the inner lining powder pipe 21 and the outer connecting sleeve 22. The gap space is also used for accommodating a light blowing pipe 23 and a wire filament. One part of the powder pipe connecting sleeve 6 is connected with the outer connecting sleeve 22, and the other part of the powder pipe connecting sleeve 6 is connected with the other part of the powder pipe connecting head 5. The optimal connection mode is a sealed connection.

[0027] As shown in the further preferred embodiment, Figures 1-4As shown in the preferred embodiment, the spray connecting pipe mechanism 2 is provided with a blow pipe 23, a wire pipe 24 and a wire conductor, the blow pipe 23 is arranged on one side of the gap space formed between the inner lining powder pipe sleeve and the outer connecting sleeve, the wire pipe 24 and the wire conductor are arranged on the other side of the gap space, and the wire conductor is arranged adjacent to the lower side of the wire pipe. The blow pipe 23, the wire pipe 24 and the wire conductor are all arranged in the gap space, so that the pipe of the blow pipe 23 can be conveniently passed out of the nozzle body, and the wire pipe and the wire conductor are arranged in the gap space.

[0028] As shown in the preferred embodiment, Figures 1-4 As shown in the further preferred embodiment, the nozzle connecting mechanism 3 comprises a nozzle connecting seat 31 and a nozzle body 7, a part of the nozzle body of the nozzle body 7 is arranged in the nozzle connecting seat, and the other part of the nozzle body protrudes out of the nozzle connecting seat. The nozzle body 7 is a nozzle body provided with a one-character type spray port in the middle. In this embodiment, the nozzle body 7 provided with a one-character type spray port is equivalent to forming an open side, and then spraying to one side of the workpiece to form a diagonal fan-shaped powder spraying surface.

[0029] As shown in the preferred embodiment, Figures 1-4 As shown in the preferred embodiment, the nozzle connecting seat 31 comprises a nozzle connecting pipe sleeve 32 and a nozzle outer pipe sleeve 33. The nozzle connecting head 4 is arranged in the nozzle connecting pipe sleeve 32, most of the nozzle body of the nozzle body 7 is connected in the nozzle connecting head, the nozzle outer pipe sleeve 33 is connected on the nozzle connecting pipe sleeve, one end of the nozzle connecting head 4 is connected with the nozzle, that is, the nozzle body 7, and the other end is connected with the inner lining powder pipe 21 through the sealing connection of the spray pipe front end connector 8. The connection structure between the nozzle connecting head 4, the nozzle connecting pipe sleeve 32 and the nozzle outer pipe sleeve 33 needs to consider the sealing property to ensure that the connected structure is stable and not easy to loosen.

[0030] As shown in the preferred embodiment, Figures 1-3 As shown in the preferred embodiment, the spray pipe front end connector 8 is provided with a connecting hole channel 80, the connecting hole channel 80 is provided with two, which are arranged on the left and right sides of the spray pipe front end connector body, or three connecting channels can also be arranged. The connecting hole channel 80 is used for passing the blow pipe, the wire pipe or the wire conductor. The nozzle connecting head 4 is provided with an external connecting pipe and an inner connector 41. The nozzle connecting pipe sleeve 32 forms a containing space. Most of the connector body of the inner connector 41 is in interference fit with the containing space of the nozzle connecting pipe sleeve 32. The one end of the nozzle connecting head, that is, the external connecting pipe is used for connecting the spray pipe front end connector 8, and the other end of the inner connector 41 is used for connecting the nozzle body 7.

[0031] As shown in the preferred embodiment, Figures 1-3As shown in the preferred embodiment, the connecting hole channel 80 is provided with a left channel and a right channel, the right channel is used for passing through the blowing pipe, and the left channel is used for passing through the wire pipe; the inner connector 41 is provided with a blowing channel 42, the blowing channel 42 is connected with the right channel, that is, the front end connector of the spraying pipe is connected with the inner connector of the nozzle connector, and the other side of the inner connector 41 is also provided with a corresponding connecting channel corresponding to the left channel; the blowing gas in the blowing pipe 23 is blown towards the nozzle body after passing through the blowing channel, and the gas for cleaning the powder in the nozzle body is formed in the nozzle body.

[0032] As shown in the preferred embodiment, the connecting hole channel 80 is provided with a left channel and a right channel, the right channel is used for passing through the blowing pipe, and the left channel is used for passing through the wire pipe; the inner connector 41 is provided with a blowing channel 42, the blowing channel 42 is connected with the right channel, that is, the front end connector of the spraying pipe is connected with the inner connector of the nozzle connector, and the other side of the inner connector 41 is also provided with a corresponding connecting channel corresponding to the left channel; the blowing gas in the blowing pipe 23 is blown towards the nozzle body after passing through the blowing channel, and the gas for cleaning the powder in the nozzle body is formed in the nozzle body. Figures 1-3 As shown in the preferred embodiment, the connecting hole channel 80 is provided with a left channel and a right channel, the right channel is used for passing through the blowing pipe, and the left channel is used for passing through the wire pipe; the inner connector 41 is provided with a blowing channel 42, the blowing channel 42 is connected with the right channel, that is, the front end connector of the spraying pipe is connected with the inner connector of the nozzle connector, and the other side of the inner connector 41 is also provided with a corresponding connecting channel corresponding to the left channel; the blowing gas in the blowing pipe 23 is blown towards the nozzle body after passing through the blowing channel, and the gas for cleaning the powder in the nozzle body is formed in the nozzle body.

[0033] As shown in the preferred embodiment, the connecting hole channel 80 is provided with a left channel and a right channel, the right channel is used for passing through the blowing pipe, and the left channel is used for passing through the wire pipe; the inner connector 41 is provided with a blowing channel 42, the blowing channel 42 is connected with the right channel, that is, the front end connector of the spraying pipe is connected with the inner connector of the nozzle connector, and the other side of the inner connector 41 is also provided with a corresponding connecting channel corresponding to the left channel; the blowing gas in the blowing pipe 23 is blown towards the nozzle body after passing through the blowing channel, and the gas for cleaning the powder in the nozzle body is formed in the nozzle body. Figures 1-5 As shown in the preferred embodiment, the connecting hole channel 80 is provided with a left channel and a right channel, the right channel is used for passing through the blowing pipe, and the left channel is used for passing through the wire pipe; the inner connector 41 is provided with a blowing channel 42, the blowing channel 42 is connected with the right channel, that is, the front end connector of the spraying pipe is connected with the inner connector of the nozzle connector, and the other side of the inner connector 41 is also provided with a corresponding connecting channel corresponding to the left channel; the blowing gas in the blowing pipe 23 is blown towards the nozzle body after passing through the blowing channel, and the gas for cleaning the powder in the nozzle body is formed in the nozzle body.

[0034] The nozzle device for powder spraying provided by the utility model has the advantages that the nozzle device for powder spraying is provided with a spray gun end connecting body, a spraying connecting pipe mechanism and a nozzle connecting mechanism, the spraying connecting pipe mechanism forms an extended connecting pipeline between the spray gun end connecting body and the nozzle connecting mechanism, the spraying connecting pipe mechanism is used for extending the conveying distance of the powder conveyed from the conveying cavity, the spraying powder channel is arranged on the nozzle connecting mechanism and is connected with the extended connecting pipeline, and the powder forms a fan-shaped spraying surface after passing through the spraying powder channel.

[0035] In this specification, unless specifically stated and limited otherwise, a first feature being "on" or "under" a second feature can mean that the first and second features are directly in contact, or that the first and second features are indirectly in contact through an intermediate medium. Also, a first feature being "over", "above" and "on top of" a second feature can mean that the first feature is directly on top of or obliquely on top of the second feature, or that the first feature is merely horizontally higher than the second feature. A first feature being "under", "below" and "underneath" a second feature can mean that the first feature is directly underneath or obliquely underneath the second feature, or that the first feature is merely horizontally lower than the second feature.

[0036] In the description of the present specification, the description referring to the terms "preferred embodiment", "further embodiment", "other embodiment" or "specific example" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0037] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and should not be construed as limiting the present application, and those ordinarily skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A nozzle device for powder coating, characterized in that: The device includes a spray gun end connection body, a spraying connection pipe mechanism, and a nozzle connection mechanism. One end of the spraying connection pipe mechanism is movably connected to the spray gun end connection body, and the other end is connected to the nozzle connection mechanism. A conveying cavity is formed within the spray gun end connection body. The front end of the conveying cavity is connected to the spray gun body, and the rear end of the conveying cavity is connected to the spraying connection pipe mechanism. The spraying connection pipe mechanism forms an extension connecting pipe between the spray gun end connection body and the nozzle connection mechanism. The spraying connection pipe mechanism is used to extend the conveying distance of the powder passing through the conveying cavity. The nozzle connection mechanism is provided with a powder spraying channel, which is connected to the extension connecting pipe. After passing through the powder spraying channel, the powder forms a fan-shaped spray surface.

2. The powder coating nozzle device according to claim 1, characterized in that, The spraying connection pipe mechanism includes an outer connecting sleeve and an inner powder-lined pipe. The inner powder-lined pipe is fitted into the outer connecting sleeve. One end of the inner powder-lined pipe is connected to a nozzle connector. A part of the nozzle connector is between the inner powder-lined pipe and the outer connecting sleeve, and the other part of the nozzle connector is connected to the nozzle connection mechanism.

3. The powder coating nozzle device according to claim 2, characterized in that, One end of the spraying connection pipe mechanism is connected to the spray gun end connection body through a powder pipe connector. The powder pipe connector includes a powder pipe connector head and a powder pipe connector sleeve. The other end of the inner powder pipe is connected to the powder pipe connector head. A part of the powder pipe connector head is placed in the gap space formed between the inner powder pipe and the outer connecting sleeve. A part of the powder pipe connector sleeve is connected to the outer connecting sleeve, and another part of the powder pipe connector sleeve is connected to another part of the powder pipe connector head.

4. The powder coating nozzle device according to claim 3, characterized in that, The spraying connection pipe mechanism is equipped with a blower pipe, a guide pipe and an enameled wire conductive wire. The blower pipe is located on one side of the gap space formed between the inner powder lining pipe and the outer connecting sleeve, and the guide pipe and the enameled wire conductive wire are located on the other side of the gap space. The enameled wire conductive wire is located adjacent to and below the guide pipe.

5. The powder spraying nozzle device according to claim 1, characterized in that, The nozzle connection mechanism includes a nozzle connector and a nozzle body. A portion of the nozzle body is placed inside the nozzle connector, and another portion of the nozzle body protrudes outside the nozzle connector. The nozzle body is a nozzle body with a straight spray nozzle in the middle.

6. The powder coating nozzle device according to claim 5, characterized in that, The nozzle connector includes a nozzle connecting sleeve and a nozzle outer sleeve. The nozzle connector is built into the nozzle connecting sleeve, and the nozzle outer sleeve is fitted onto the nozzle connecting sleeve. One end of the nozzle connector is connected to the nozzle body, and the other end is connected to the powder lining tube through a sealing connection to the front end of the spray tube.

7. The powder coating nozzle device according to claim 6, characterized in that: The front end connector of the spray pipe is provided with a connection hole channel. There are two connection hole channels, which are respectively located on the left and right sides of the front end connector body of the spray pipe. The nozzle connector is provided with an outer pipe and an inner connector. An accommodating space is formed inside the nozzle connecting pipe sleeve. Most of the connector body of the inner connector is interference-fitted with the accommodating space of the nozzle connecting pipe sleeve.

8. The powder coating nozzle device according to claim 7, characterized in that, The connecting hole channel has a left channel and a right channel. The right channel is used for passing through the cleaning pipe, and the left channel is used for passing through the wire pipe. The inner connector is provided with a cleaning channel, which is connected to the right channel. The cleaning gas in the cleaning pipe passes through the cleaning channel and blows towards the nozzle body.

9. The powder spraying nozzle device according to claim 5, characterized in that, The nozzle body is also provided with a circular cover and a plug core. The plug core is placed inside the circular cover. The plug core is provided with a circular plate surface. A central hole and an air hole are opened on the circular plate surface. After part of the circular cover is connected to the nozzle connecting seat, the circular cover and the front end of the nozzle connecting seat form an annular spray channel.

10. The powder coating nozzle device according to claim 1, characterized in that, The spray gun end connection body includes a connecting pipe and an outer pipe assembly. The connecting pipe forms a sealed connection with the spraying connecting pipe mechanism, and the outer pipe assembly is connected to the connecting pipe.

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