Direction-variable electrostatic spraying nozzle sleeve

Abstract

The utility model discloses a direction-variable electrostatic spraying nozzle sleeve. Comprising an atomizing nozzle for filtering a coating and uniformly spraying the coating, a telescopic turning cylinder which can be telescopically turned, is connected with the atomizing nozzle and is used for changing the length and the direction after being stressed so as to adjust the position of the atomizing nozzle, and a connecting cylinder which is connected with the telescopic turning cylinder and is used for being connected with an electrostatic spray gun, the atomizing nozzle, the telescopic turning cylinder and the connecting cylinder are sequentially communicated to form a spraying channel for spraying a coating; compared with the prior art, the electrostatic spraying device is suitable for electrostatic spraying of corners and welding seams of a complex inner cavity of the engineering machine through the matching effect of the atomizing spray head, the telescopic turning cylinder and the connecting cylinder, overcomes the defects of electrostatic spraying of the complex inner surface of the engineering machine, and is simple in overall structure, high in spraying efficiency, low in manufacturing cost, convenient to use, easy to operate and suitable for popularization and application. The device is high in practicability and suitable for wide popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrostatic spraying equipment technical field, in particular, relate to a variable direction electrostatic spraying spray head sleeve. BACKGROUND

[0002] Electrostatic spraying is the principle of corona discharge, make atomized coating under the action of high voltage DC electric field negative, and adsorbed on the positive surface of the discharge coating method. Electrostatic spraying technology can uniformly spray coating on the surface of construction machinery, form high quality coating, improve the value of the product, compared with the traditional coating use mode, the use amount of powder coating is less, more environmental protection, can reduce the influence on the environment, reduce emissions, protect the environment, using electrostatic spraying technology, can greatly improve the coating efficiency, save labor cost, it can effectively adsorb coating on the workpiece surface, reduce the waste of coating, reduce the cost of raw materials, electrostatic spraying technology can also realize the accurate control of coating thickness and quality, guarantee coating efficiency and product quality, therefore, electrostatic spraying technology is widely used in various construction machinery.

[0003] In the electrostatic spraying of construction machinery, the outer surface of the construction machinery can be uniformly sprayed by electrostatic spraying, but for many complex inner cavity surfaces, angles and welds of the construction machinery, there are various angles and positions that cannot be reached by electrostatic spraying guns, and electrostatic spraying cannot be reached, which makes the inner cavity very easy to corrode, or needs to be manually supplemented, increasing labor cost and time cost.

[0004] Although a corner turning electrostatic spraying nozzle is disclosed in Chinese invention patent CN110665666B, the sliding block is driven to slide along the sliding groove by the driving motor, the roller slides on the wave-shaped surface of the back plate, and the elasticity of the reset spring cooperates to make the square rod reciprocate with the fluctuation of the back plate, drive the gear to rotate, so that the spray pipe periodically swings when moving, the coverage of the swinging nozzle is wider, and the spraying coverage is more uniform, however, its structure is too complex, the manufacturing cost is high, and the use space range is small, and it is not reachable in the height direction. UTILITY MODEL CONTENTS

[0005] The utility model provides a variable direction electrostatic spraying nozzle sleeve to solve the technical problem of the existing electrostatic spraying of complex inner surface of construction machinery.

[0006] According to one aspect of the present invention, a variable-direction electrostatic spray nozzle sleeve is provided, comprising an atomizing nozzle for filtering coating and uniformly spraying the coating, a telescopic deflector connected to the atomizing nozzle for changing its length and direction under force to adjust the position of the atomizing nozzle, and a connecting cylinder connected to the telescopic deflector for connecting an electrostatic spray gun. The atomizing nozzle, the telescopic deflector, and the connecting cylinder are sequentially connected to form a spraying channel for spraying coating.

[0007] As a further improvement to the above technical solution:

[0008] Furthermore, the atomizing nozzle includes an inner shell layer, an outer shell layer, and a filter screen disposed between the inner shell layer and the outer shell layer.

[0009] Furthermore, the inner shell layer has multiple internal spray holes arranged in a mesh pattern, and the outer shell layer has external spray holes arranged in a one-to-one correspondence with the internal spray holes.

[0010] Furthermore, a positioning block is protruding on the outer wall of the inner shell layer, and a positioning groove is recessed on the inner wall of the outer shell layer to match the positioning block and to ensure that the inner spray hole and the outer spray hole are arranged in a one-to-one correspondence.

[0011] Furthermore, the inner shell is arranged in a hemispherical shape, and the outer shell matches the shape of the inner shell.

[0012] Furthermore, the inner shell is arranged in a frustum shape, and the bottom and sides are chamfered, so that the outer shell matches the shape of the inner shell.

[0013] Furthermore, the end of the telescopic deflector facing the atomizing nozzle is provided with a locking groove, and the atomizing nozzle is provided with a locking part that engages with the locking groove.

[0014] Furthermore, the telescopic deflector includes multiple annular connecting sections, which can be elastically telescopically arranged, and two connected annular connecting sections can be elastically bent and connected.

[0015] Furthermore, the inner wall of the connecting cylinder is provided with an internal thread structure for threaded connection with the electrostatic spray gun.

[0016] Furthermore, the inner wall of the connecting cylinder is radially recessed with an installation groove, and a sealing ring that contacts the internal thread structure is installed in the installation groove.

[0017] This utility model has the following beneficial effects:

[0018] This utility model's variable-direction electrostatic spray nozzle sleeve, when spraying the inner cavity of engineering machinery, connects to the electrostatic spray gun via a connecting sleeve. Applying force to the telescopic variable-direction sleeve changes its length and direction, thereby adjusting the atomizing nozzle to a suitable spraying position, achieving spraying at different angles. The electrostatic spray gun operates, spraying paint along the spraying channel formed by the atomizing nozzle, telescopic variable-direction sleeve, and connecting sleeve. Under the action of the atomizing nozzle, the paint is filtered and evenly sprayed, improving paint quality and achieving large-area uniform spraying. This solution, through the coordinated action of the atomizing nozzle, telescopic variable-direction sleeve, and connecting sleeve, is suitable for electrostatic spraying of complex inner cavity corners and welds of engineering machinery compared to existing technologies. It compensates for the omissions in electrostatic spraying of complex inner surfaces of engineering machinery, and features a simple overall structure, high spraying efficiency, low manufacturing cost, ease of use, simple operation, and strong practicality, making it suitable for widespread promotion and application.

[0019] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the variable-direction electrostatic spray nozzle sleeve of a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the atomizing nozzle in the variable-direction electrostatic spray nozzle sleeve of the present utility model in a preferred embodiment;

[0023] Figure 3 yes Figure 2 The figure shows a cross-sectional view (AA) of the atomizing nozzle in the sleeve of the variable-direction electrostatic spray nozzle.

[0024] Figure 4 This is a schematic diagram of the atomizing nozzle in the variable-direction electrostatic spray nozzle sleeve of a preferred embodiment of the present invention.

[0025] Legend:

[0026] 100. Atomizing nozzle; 110. Inner shell layer; 120. Outer shell layer; 200. Telescopic deflector; 300. Connecting cylinder. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments disclosed in this application clearer, the technical solutions of the embodiments disclosed in this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments disclosed in this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0028] It should be noted that the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] like Figure 1 As shown, the variable-direction electrostatic spray nozzle sleeve of this embodiment includes an atomizing nozzle 100 for filtering the paint and spraying it evenly, a telescopic deflecting cylinder 200 connected to the atomizing nozzle 100 for changing its length and direction under force to adjust the position of the atomizing nozzle 100, and a connecting cylinder 300 connected to the telescopic deflecting cylinder 200 for connecting the electrostatic spray gun. The atomizing nozzle 100, the telescopic deflecting cylinder 200 and the connecting cylinder 300 are connected in sequence to form a spraying channel for spraying paint.

[0030] It should be understood that the variable-direction electrostatic spray nozzle sleeve in this embodiment is a functional component that is sleeved on the electrostatic spray gun.

[0031] like Figure 1 As shown, specifically, the variable-direction electrostatic spray nozzle sleeve of this utility model, when spraying the inner cavity of engineering machinery, connects to the electrostatic spray gun via the connecting sleeve 300, and then applies force to the telescopic variable-direction sleeve 200. By changing the length and direction of the telescopic variable-direction sleeve 200, the atomizing nozzle 100 is adjusted to a suitable spraying position, achieving the purpose of spraying at different angles. Through the operation of the electrostatic spray gun, paint is sprayed along the spraying channel formed by the sequential connection of the atomizing nozzle 100, the telescopic variable-direction sleeve 200, and the connecting sleeve 300. Under the action of the atomizing nozzle 100, the coating is filtered and sprayed evenly, thereby improving the coating quality and achieving large-area uniform spraying. This solution, through the coordinated action of the atomizing nozzle 100, the telescopic deflector 200, and the connecting cylinder 300, is suitable for electrostatic spraying of complex internal cavities, corners, and welds of engineering machinery compared to existing technologies. It makes up for the omissions in electrostatic spraying on the complex internal surfaces of engineering machinery. Moreover, the overall structure is simple, the spraying efficiency is high, the manufacturing cost is low, it is convenient to use, easy to operate, and highly practical, making it suitable for widespread promotion and application.

[0032] like Figure 2 and Figure 3 As shown, in this embodiment, the atomizing nozzle 100 includes an inner shell layer 110, an outer shell layer 120, and a filter screen disposed between the inner shell layer 110 and the outer shell layer 120. Specifically, the filter screen is fixed by the cooperation of the inner shell layer 110 and the outer shell layer 120, and then the filter screen filters out micro-solid impurities in the coating to improve the coating quality.

[0033] like Figure 3 and Figure 4 As shown, in this embodiment, the inner shell layer 110 has multiple inner spray holes arranged in a mesh pattern, and the outer shell layer 120 has outer spray holes arranged in a one-to-one correspondence with the inner spray holes. Specifically, the paint is first sprayed out from the inner spray holes and passes through the filter screen, and then sprayed out from the outer spray holes. Because the multiple inner spray holes are arranged in a mesh pattern, and the inner and outer spray holes are arranged in a one-to-one correspondence, large-area uniform spraying can be achieved. It should be understood that the diameter of the outer spray holes matches the diameter of the inner spray holes, and the diameter of the inner and outer spray holes is larger than the diameter of the filter holes on the filter screen, so that the paint can be smoothly sprayed out through the inner spray holes, filter holes, and outer spray holes.

[0034] In this embodiment, a positioning block protrudes from the outer wall of the inner shell layer 110, and a positioning groove is recessed on the inner wall of the outer shell layer 120 to mate with the positioning block, thereby ensuring that the inner and outer spray holes are arranged in a one-to-one correspondence. Specifically, after the outer shell layer 120 is placed on the inner shell layer 110, the positioning block and the positioning groove are arranged in a one-to-one correspondence, ensuring the unobstructed spraying channel and guaranteeing smooth spraying.

[0035] like Figure 2 and Figure 3 As shown, in this embodiment, the inner shell layer 110 is arranged in a hemispherical shape, and the outer shell layer 120 matches the shape of the inner shell layer 110. Specifically, by arranging the inner shell layer 110 in a hemispherical shape and matching the shape of the outer shell layer 120 with that of the inner shell layer 110, the mist nozzle is arranged in a hemispherical shape, thereby maximizing the spraying area and improving spraying efficiency.

[0036] In another embodiment, the inner shell layer 110 is arranged in a frustum shape, and the outer bottom surface and side surface are chamfered. The outer shell layer 120 matches the shape of the inner shell layer 110. Specifically, by making the inner shell layer 110 arranged in a frustum shape, and the outer bottom surface and side surface are chamfered, and by making the shape of the outer shell layer 120 match the shape of the inner shell layer 110, the spraying area can be increased to a certain extent, thereby improving the spraying efficiency.

[0037] In this embodiment, the telescopic deflector 200 has a snap-fit ​​groove at its end facing the atomizing nozzle 100, and the atomizing nozzle 100 has a snap-fit ​​part that engages with the snap-fit ​​groove. Specifically, the snap-fit ​​groove and snap-fit ​​part engage with each other to enable quick assembly of the telescopic deflector 200 and the atomizing nozzle 100, and also to enable quick disassembly of the telescopic deflector 200 and the atomizing nozzle 100 to clean the filter screen in the atomizing nozzle 100, thereby ensuring the filtration efficiency of the filter screen.

[0038] In one embodiment, after prolonged use, the filter screen may become clogged with impurities, leading to reduced filtration efficiency and affecting the spraying effect. Therefore, the telescopic deflector 200 and atomizing nozzle 100 can be disassembled, along with the inner shell 100 and outer shell 120, to remove the filter screen for cleaning and reuse. If the filter screen cannot be reused, a new filter screen can be used as a replacement. Furthermore, the inner shell 100 and outer shell 120 can be cleaned and maintained, thereby extending the service life of the telescopic electrostatic spraying nozzle sleeve.

[0039] In this embodiment, the telescopic deflector 200 includes multiple annular connecting sections, which are elastically extendable and retractable, and two connected annular connecting sections are elastically bent and connected. Specifically, after applying a force to the telescopic deflector 200, the multiple annular connecting sections elastically bend or extend and retract to adjust the length and direction of the telescopic deflector 200, thereby adjusting the spraying position of the atomizing nozzle 100. Optionally, in another embodiment, the telescopic deflector 200 uses a spring structure to achieve extension, retraction, and deflection.

[0040] In this embodiment, the inner wall of the extension connecting cylinder 300 is provided with an internal thread structure for threaded connection with the electrostatic spray gun. Specifically, the internal thread structure connects to the electrostatic spray gun, ensuring reliable connection while facilitating disassembly and assembly. This is beneficial for use in the complex internal cavities of engineering machinery and does not limit the application of the electrostatic spray gun. In addition, the threaded connection structure is simple, easy to manufacture and install, and provides reliable and stable connection.

[0041] In this embodiment, the inner wall of the connecting cylinder 300 is radially recessed with an installation groove, and a sealing ring that contacts the internal thread structure is installed in the installation groove. Specifically, by accommodating the sealing ring in the installation groove and ensuring that the sealing ring contacts the internal thread structure, the sealing ring improves the sealing performance and prevents paint leakage after the connecting cylinder 300 and the electrostatic spray gun are threadedly connected.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A variable-direction electrostatic spray nozzle sleeve, characterized in that, It includes an atomizing nozzle (100) for filtering the paint and spraying it evenly, a telescopic deflector cylinder (200) connected to the atomizing nozzle (100) for changing its length and direction under force to adjust the position of the atomizing nozzle (100), and a connecting cylinder (300) connected to the telescopic deflector cylinder (200) for connecting an electrostatic spray gun. The atomizing nozzle (100), the telescopic deflector cylinder (200) and the connecting cylinder (300) are connected in sequence to form a spraying channel for spraying paint.

2. The variable-direction electrostatic spray nozzle sleeve according to claim 1, characterized in that, The atomizing nozzle (100) includes an inner shell layer (110), an outer shell layer (120), and a filter screen disposed between the inner shell layer (110) and the outer shell layer (120).

3. The variable-direction electrostatic spray nozzle sleeve according to claim 2, characterized in that, The inner shell layer (110) has multiple inner spray holes arranged in a mesh pattern, and the outer shell layer (120) has outer spray holes arranged in a one-to-one correspondence with the inner spray holes.

4. The variable-direction electrostatic spray nozzle sleeve according to claim 3, characterized in that, The inner shell layer (110) has a protruding positioning block on its outer wall, and the outer shell layer (120) has a recessed positioning groove that matches the positioning block to make the inner spray hole and the outer spray hole correspond one-to-one.

5. The variable-direction electrostatic spray nozzle sleeve according to claim 2, characterized in that, The inner shell (110) is arranged in a hemispherical shape, and the outer shell (120) matches the shape of the inner shell (110).

6. The variable-direction electrostatic spray nozzle sleeve according to claim 2, characterized in that, The inner shell (110) is arranged in a frustum shape, and the bottom and sides are chamfered. The outer shell (120) matches the shape of the inner shell (110).

7. The variable-direction electrostatic spray nozzle sleeve according to any one of claims 1-6, characterized in that, The telescopic deflector (200) has a snap-fit ​​groove at the end facing the atomizing nozzle (100), and the atomizing nozzle (100) has a snap-fit ​​part that is snapped into the snap-fit ​​groove.

8. The variable-direction electrostatic spray nozzle sleeve according to any one of claims 1-6, characterized in that, The telescopic deflector (200) includes multiple annular connecting sections, which can be elastically telescopically arranged, and two connected annular connecting sections can be elastically bent and connected.

9. The variable-direction electrostatic spray nozzle sleeve according to any one of claims 1-6, characterized in that, The inner wall of the connecting cylinder (300) is provided with an internal thread structure for threaded connection with the electrostatic spray gun.

10. The variable-direction electrostatic spray nozzle sleeve according to claim 9, characterized in that, The inner wall of the connecting cylinder (300) is radially recessed with an installation groove, and a sealing ring that contacts the internal thread structure is installed in the installation groove.

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