Spray head structure applicable to wide spraying

Abstract

The utility model provides a spray head structure applicable to wide spraying. The spray head structure at least comprises an ultrasonic body and an air tap, the ultrasonic body is connected with an ultrasonic generator; a feeding channel is formed in the ultrasonic body, and a discharging opening of the feeding channel is located in the end face of the transmitting end of the ultrasonic body. The gas nozzle is connected with a first gas supply system for supplying working gas; an outlet of the air tap is positioned below the transmitting end surface; a coating enters from the feeding channel, is discharged from the discharge hole and is oscillated and atomized under the action of the ultrasonic body; the air nozzles are asymmetrically arranged around the ultrasonic body, so that gas output by the two air nozzles forms a certain included angle, carrier gas sprayed out by the two air nozzles is crossed, materials subjected to oscillation atomization are distributed in a left-right fan shape, the area is large, the materials are uniform, and the materials cannot be wasted; and the uniform nanoscale spraying of the coating can be realized.

Description

Technical Field

[0001] This utility model relates to the field of surface treatment technology, and in particular to a spray head structure applicable to wide-width spraying. Background Technology

[0002] With the development of nanomaterials technology, the application of nanofunctional coatings has become more and more widespread, and the industrialization demand for the preparation of nanoscale thin films and functional coatings is also increasing.

[0003] Traditional coating preparation methods for large-area continuous production include roll coating, dip coating, blade coating, two-fluid spraying, screen printing, etc. However, coatings prepared by traditional coating processes such as roll coating, dip coating, and blade coating are generally thick, making it difficult to achieve uniform nanoscale coatings.

[0004] Furthermore, two-fluid spraying, due to its high-energy atomization process using high-pressure gas and liquid, results in significant paint waste. Screen printing, on the other hand, allows for the formation of very thick coatings because a large amount of liquid paint remains trapped on the screen. Moreover, the uneven atomization particles and uncontrollable spray flow in two-fluid spraying, combined with the precision limitations of roller coating, dip coating, doctor blade coating, and screen printing, result in poor coating uniformity, making it difficult to achieve the desired functionality of nano-coatings.

[0005] In addition, with the development of technology, the technology of using ultrasonic devices for spraying has been gradually applied to the spraying of nanomaterials. However, because the nozzle of the ultrasonic device is relatively narrow, it cannot achieve wide-width spraying, resulting in low spraying efficiency.

[0006] Therefore, there is an urgent need to develop a wide-span spraying technology that can achieve nanoscale coatings with high uniformity and no waste of paint. Utility Model Content

[0007] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a nozzle structure applicable to wide-width spraying, so as to solve the technical problems existing in the prior art.

[0008] To achieve the above and other related objectives, this utility model provides a nozzle structure applicable to wide-width spraying. The nozzle structure includes at least: an ultrasonic body and an air nozzle; the ultrasonic body is connected to an ultrasonic generator; the ultrasonic body has a feeding channel, and the outlet of the feeding channel is located on the end face of the transmitting end of the ultrasonic body.

[0009] The nozzle is connected to a first gas supply system for supplying working gas; the two nozzles are asymmetrically arranged around the ultrasonic body, and the outlet of the nozzle is located below the transmitting end face.

[0010] Furthermore, the nozzle structure also includes a cover with an opening; the ultrasonic body is housed within the cover, and the transmitting end is located in the opening, forming two air inlets between them; the cover is connected to a second air supply system for supplying cooling guide air to the two air inlets.

[0011] Furthermore, the cover includes an upper shell and a lower shell; a gas-containing cavity is formed between the inner wall of the upper shell and the outer wall of the ultrasonic body; the opening is located at the lower end of the lower shell; two gas channels are opened in the lower shell; the two gas inlets are respectively connected to the gas-containing cavity through one of the gas channels; the second gas supply system is connected to the gas-containing cavity.

[0012] Furthermore, a guide plate is provided inside the gas receiving cavity, dividing the gas receiving cavity into an upper gas receiving cavity and a lower gas receiving cavity; the guide plate is sleeved on the ultrasonic body and forms an annular channel with the ultrasonic body, the annular channel connecting the upper gas receiving cavity and the lower gas receiving cavity; the second gas supply system is connected to the upper gas receiving cavity.

[0013] Furthermore, the lower housing is housed within the upper housing.

[0014] Furthermore, the two air nozzles are detachably mounted on the ultrasonic body via a mounting bracket, and the angle of the air nozzles is adjustable.

[0015] Furthermore, the included angle between the outlets of the two air nozzles is 0-150°.

[0016] Furthermore, the horizontal distance between the outlet of the air nozzle and the discharge port is 0-30 mm.

[0017] Furthermore, the vertical distance between the outlet of the air nozzle and the discharge port is 0-30mm.

[0018] Furthermore, the length-to-width ratio of the outlet of the air nozzle is between 1 and 20.

[0019] As described above, the nozzle structure of this utility model, which is applicable to wide-width spraying, has the following beneficial effects:

[0020] Because the ultrasonic body has a feeding channel, and the outlet of the feeding channel is located on the end face of the transmitting end of the ultrasonic body; at the same time, two air nozzles are arranged around the ultrasonic body, and the outlet of the air nozzles is located below the transmitting end face; the coating enters from the feeding channel and exits from the outlet, and is oscillated and atomized under the action of the ultrasonic body; the air nozzles are asymmetrically arranged, so that the air output from the two air nozzles presents a certain angle, so the carrier gas sprayed from the two air nozzles is cross, thereby making the oscillated and atomized material distributed in a fan-shaped state on the left and right, with a relatively large and uniform area. It can be seen that there is no waste of material, and a relatively uniform nanoscale spraying of the coating can be achieved. Attached Figure Description

[0021] Figure 1 The diagram shown is a cross-sectional view of a nozzle structure applicable to wide-width spraying according to this utility model.

[0022] Figure 2 The diagram shows the assembly of the air nozzle and mounting bracket of this utility model.

[0023] Figure 3 The diagram shows the positions of the nozzle and the transmitter of this utility model.

[0024] Figure 4 The diagram shown is a structural schematic of the air nozzle of this utility model;

[0025] Figure 5 Displayed as Figure 4 A schematic diagram of direction A.

[0026] Component designation explanation

[0027] 1. Ultrasonic body 2. Feeding channel

[0028] 11. Transmitter end; 21. Feed connector

[0029] 12 Electrical connector 31 Second gas connector

[0030] 4. Air valve 32. Air inlet

[0031] 41 First gas connector 61 Upper gas receiving cavity

[0032] 42 Mounting bracket 62 Lower gas containment chamber

[0033] 51 Upper shell 63 Annular channel

[0034] 52 Lower shell 64 Gas passage

[0035] 53. Deflector Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0037] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0038] like Figure 1 As shown, this utility model provides a spray head structure applicable to wide-width spraying. The spray head structure includes at least: an ultrasonic body 1 and an air nozzle 4; the ultrasonic body 1 is connected to an ultrasonic generator (not shown in the figure) via an electrical connector 12; the ultrasonic body 1 has a feeding channel 2, and the outlet of the feeding channel 2 (not shown in the figure) is located on the end face of the transmitting end 11 of the ultrasonic body 1. Preferably, the electrical connector 12 is an aviation plug.

[0039] The air nozzle 4 is connected to a first gas supply system (not shown in the figure) for supplying working gas via a first gas connector 41; the two air nozzles 4 are asymmetrically arranged around the ultrasonic body 1, and the outlet of the air nozzle 4 is located below the surface of the transmitting end 11, see Figure 1 and Figure 3 .

[0040] refer to Figure 1 The feeding channel is connected to the storage device (not shown in the figure) via the feeding connector 21. The coating enters through the feeding channel 2 and exits through the outlet. Under the action of the ultrasonic body 1, it is atomized by vibration to produce micron-sized fine droplets. The two air nozzles 4 are asymmetrically arranged, so that the air output from the two air nozzles 4 forms a certain angle. Therefore, the carrier gas sprayed from the two air nozzles 4 is cross-shaped, resulting in a fan-shaped distribution of micron-sized fine droplets with a relatively large and uniform area, thereby achieving the purpose of wide-area precision spraying on the surface of the object to be coated. Preferably, the feeding connector 21 is a quick connector.

[0041] In one embodiment of this application, as Figure 1 As shown, the nozzle structure also includes a cover (not shown in the figure) with an opening (not indicated in the figure); the ultrasonic body 1 is housed within the cover, and the transmitting end 11 is located at the opening. Two air inlets 32 are formed between the outer wall of the ultrasonic body 1 and the cover, with the air inlets 32 close to the end face of the transmitting end 11. The cover is connected to a second gas supply system (not shown in the figure) for supplying cooling air to the two air inlets 32. Specifically, a second gas connector 31 is provided on the cover, and the output pipe of the second gas supply system is connected to the second gas connector 31. Preferably, for ease of connection, the second gas connector 31 is a quick-connect fitting. The cooling air input by the second gas supply system can exchange heat with the ultrasonic body 1 and the cover, thereby cooling the ultrasonic body 1 and the cover, especially the ultrasonic body 1, thus preventing the ultrasonic body 1 from being affected in terms of lifespan due to insufficient and inadequate heat dissipation. In addition, the cooling guide gas output from the air outlet 32 ​​can also guide the micron-sized droplets generated on the end face of the transmitter 11 under the action of the ultrasonic body 1.

[0042] The first gas connector 41 is also disposed on the cover. Preferably, both the first gas connector 41 and the second gas connector 31 are disposed on the upper end surface of the cover, see Figure 1 .

[0043] Furthermore, to facilitate disassembly and assembly and reduce processing costs, refer to Figure 1 The cover is at least formed by the mating of an upper shell 51 and a lower shell 52. A gas-containing cavity (not shown in the figure) is formed between the inner wall of the upper shell 51 and the outer wall of the ultrasonic body 1. The opening is located at the lower end of the lower shell 52. Two gas channels 64 are provided in the lower shell 52. Two gas inlets 32 are respectively connected to the gas-containing cavity through one of the gas channels 64. The second gas supply system is connected to the gas-containing cavity. Specifically, a second gas connector 31 is provided on the upper shell 51. The output pipe of the second gas supply system is connected to the second gas connector 31 and supplies cooling gas to the gas-containing cavity. The cooling gas in the gas-containing cavity is transported to the two gas inlets 32 through the two gas channels 64. After the cooling gas comes out of the gas inlets 32, it can guide the micron-sized droplets generated on the end face of the transmitting end 11 under the action of the ultrasonic body 1. The guiding effect can be adjusted by adjusting the gas pressure of the cooling gas.

[0044] Preferably, the lower housing 52 is housed within the upper housing 51.

[0045] Further, refer to Figure 1A guide plate 53 is provided inside the gas receiving cavity, dividing the gas receiving cavity into an upper gas receiving cavity 61 and a lower gas receiving cavity 62. The guide plate 53 is sleeved on the ultrasonic body 1, forming an annular channel 63 between the guide plate 53 and the ultrasonic body 1, and the annular channel 63 connects the upper gas receiving cavity 61 and the lower gas receiving cavity 62. The second gas supply system is connected to the upper gas receiving cavity 61. This allows the cooling guide gas to be evenly dispersed in the upper gas receiving cavity 61 and the lower gas receiving cavity 62 after entering, which not only enables the transducer body to effectively dissipate heat, but also ensures a high uniformity of the output cooling guide gas, ensuring that the output cooling guide gas is evenly distributed around the outlet, thereby improving the diversion effect.

[0046] During operation, the paint enters through the feeding channel 2 and exits through the outlet. The exiting paint is located on the end face of the emitting end 11, where it is atomized by high-frequency ultrasonic vibration, forming micron-sized droplets. Simultaneously, cooling guide gas enters the gas receiving chamber and exits through two gas outlets 32. The output cooling guide gas mixes with the micron-sized droplets and guides them downwards, i.e., towards the surface of the object to be coated. Due to the asymmetrical arrangement of the two nozzles 4, the air output from the two nozzles 4 forms a certain angle, resulting in the carrier gas being sprayed from the two nozzles 4 crossing each other. This causes the micron-sized droplets to be distributed in a fan-shaped pattern, with a relatively large and uniform area, thereby achieving the purpose of wide-area precision spraying on the surface of the object to be coated.

[0047] Furthermore, the included angle between the outlets of the two air nozzles 4 is 0-150°. The included angle between the two air nozzles 4 determines the spray width; the larger the included angle, the larger the spray width.

[0048] refer to Figure 2 and Figure 3 The spray width is related to the included angle between the two air nozzles 4. The larger the included angle, the wider the spray width. To accommodate different spray widths, in this application, the two air nozzles 4 can be detachably mounted on the ultrasonic body 1 by means of a mounting bracket 42 and fasteners. The two air nozzles 4 can also be detachably fixed to the cover by means of a mounting bracket 42. Of course, the two air nozzles 4 can also be arranged independently without being fixed to the ultrasonic body 1 or the cover, as long as the two air nozzles 4 are asymmetrically arranged around the ultrasonic body 1, the air output from the two air nozzles 4 presents a certain included angle, and the outlet of the air nozzles 4 is located below the surface of the transmitting end 11.

[0049] refer to Figure 1The uniformity of the spraying is also related to the distance between the outlet of the air nozzle 4 and the discharge port. Preferably, the horizontal distance between the outlet of the air nozzle 4 and the discharge port is 0-30 mm. The vertical distance between the outlet of the air nozzle 4 and the discharge port is 0-30 mm.

[0050] refer to Figure 4 and Figure 5 The ratio of the length to the width of the outlet of the air nozzle 4 also affects the spraying effect. Preferably, the ratio of the length to the width of the outlet of the air nozzle 4 is between 1 and 20.

[0051] In this application, the centerline of the feeding channel 2 coincides with or is parallel to the centerline of the ultrasonic body 1 along its length. Preferably, the centerline of the feeding channel 2 coincides with the centerline of the ultrasonic body 1 along its length, see [link to application details]. Figure 1 The nozzle has a compact design and a simple structure.

[0052] Preferably, the ultrasonic frequency range of the ultrasonic body 1 is 15kHz-1000kHz. Transducer bodies of different frequencies can also be installed in the housing of this application, and the extension length of the transmitting end 11 can be adjusted by adjusting the distance between the housing and the ultrasonic body 1.

[0053] The nozzle structure of this invention enables the sprayed liquid to be rapidly and evenly diffused in a fan shape, thereby significantly increasing the spray width and greatly improving the efficiency and quality of thin film spraying. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0054] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A nozzle structure suitable for wide-width spraying, characterized in that, The nozzle structure includes at least: an ultrasonic body and an air nozzle; the ultrasonic body is connected to an ultrasonic generator; the ultrasonic body has a feeding channel, and the outlet of the feeding channel is located on the end face of the transmitting end of the ultrasonic body. The nozzle is connected to a first gas supply system for supplying working gas; the two nozzles are asymmetrically arranged around the ultrasonic body, and the outlet of the nozzle is located below the transmitting end face.

2. The spray head structure applicable to wide-width spraying according to claim 1, characterized in that: The nozzle structure also includes a cover with an opening; the ultrasonic body is housed within the cover, and the transmitting end is located in the opening, forming two air inlets between them; the cover is connected to a second air supply system for supplying cooling guide gas to the two air inlets.

3. The nozzle structure applicable to wide-width spraying according to claim 2, characterized in that: The cover includes an upper shell and a lower shell; a gas-containing cavity is formed between the inner wall of the upper shell and the outer wall of the ultrasonic body; the opening is located at the lower end of the lower shell; two gas channels are opened in the lower shell; two gas inlets are respectively connected to the gas-containing cavity through one of the gas channels; the second gas supply system is connected to the gas-containing cavity.

4. The spray head structure applicable to wide-width spraying according to claim 3, characterized in that: A guide plate is provided inside the gas receiving cavity, dividing the gas receiving cavity into an upper gas receiving cavity and a lower gas receiving cavity; the guide plate is sleeved on the ultrasonic body and forms an annular channel with the ultrasonic body, the annular channel connecting the upper gas receiving cavity and the lower gas receiving cavity; the second gas supply system is connected to the upper gas receiving cavity.

5. The spray head structure applicable to wide-width spraying according to claim 3, characterized in that: The lower housing is housed within the upper housing.

6. The spray head structure applicable to wide-width spraying according to claim 1, characterized in that: The two air nozzles are detachably mounted on the ultrasonic body via a mounting bracket, and the angle of the air nozzles is adjustable.

7. The spray head structure applicable to wide-width spraying according to claim 1, characterized in that: The included angle between the outlets of the two air nozzles is 0-150°.

8. The spray head structure applicable to wide-width spraying according to claim 1, characterized in that: The horizontal distance between the outlet of the air nozzle and the discharge port is 0-30 mm.

9. The spray head structure applicable to wide-width spraying according to claim 1, characterized in that: The vertical distance between the outlet of the air nozzle and the discharge port is 0-30 mm.

10. The spray head structure applicable to wide-width spraying according to claim 1, characterized in that: The length-to-width ratio of the nozzle outlet is between 1 and 20.

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