Spray head

Abstract

The utility model belongs to the technical field of coating equipment, and particularly relates to a spray head which comprises a fixing seat, a flow guide assembly, a nozzle core and an adjusting part, the flow guide assembly is installed on the fixing seat, the nozzle core penetrates through the flow guide assembly, the adjusting part is installed at one end of the flow guide assembly, and a first channel is formed in the nozzle core. A first outlet is formed in one end of the adjusting part and one end of the flow guide assembly, the first channel communicates with the first outlet, and a second channel is formed in the flow guide assembly. The flow guide assembly and the nozzle core are separately arranged, so that the nozzle core only needs to be provided with the first channel, the diameter size of the nozzle core is reduced, the size of the first channel can be reduced, slurry sprayed out of the first channel is finer, and the atomization effect is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of coating equipment, and specifically relates to a spray head. Background Technology

[0002] Among current coating equipment, there is a portable handheld liquid electrostatic spray gun that saves paint and is easy to maintain. It mainly uses an air compressor and an electrostatic generator to atomize liquid paint into electrostatically charged particles using an electrostatic spray gun with a nozzle, which can then be evenly sprayed onto the workpiece to be coated. Compared with large automatic coating machines, this handheld liquid electrostatic spray gun has the advantages of low cost, small size and easy mobility, and is suitable for businesses with small production volumes. Therefore, it has been favored and adopted by many small and medium-sized enterprises.

[0003] The existing nozzles installed on electrostatic spray guns have the channels for conveying slurry and gas located on the nozzle core, which makes the diameter of the nozzle core relatively large. This is not conducive to reducing the diameter of the slurry channel, resulting in poor atomization of the output slurry.

[0004] Therefore, there is an urgent need to propose a new technical solution to address the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a nozzle that separates the flow guiding component and the nozzle core, allowing the nozzle core to have only a first channel, thus reducing the diameter of the nozzle core and consequently the size of the first channel. This results in a finer slurry sprayed from the first channel, improving the atomization effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A nozzle includes a fixed base, a flow guiding assembly, a nozzle core, and an adjusting member. The flow guiding assembly is mounted on the fixed base, the nozzle core is inserted into the flow guiding assembly, the adjusting member is mounted on one end of the flow guiding assembly, a first channel is provided inside the nozzle core, a first outlet is formed by one end of the adjusting member and one end of the flow guiding assembly, the first channel and the first outlet are connected, and a second channel is provided on the flow guiding assembly.

[0008] Preferably, the flow guiding assembly includes a base, a housing, and a flow guiding element. The base is mounted on the fixed seat, and one end of the nozzle core passes through the flow guiding element and the housing in sequence and is connected to the base.

[0009] Preferably, the surface of the base has at least one through hole, the surface of the housing has at least one flow hole, a gap is formed between the flow guide and the nozzle core, and the second channel is composed of the through hole, the flow hole and the gap connected in sequence.

[0010] Preferably, a second outlet is formed between one end of the guide member and the nozzle core, and the second outlet is connected to the second channel.

[0011] Preferably, one end of the nozzle core is provided with a flow divider, one side of the flow divider and the adjusting member form the first outlet, and the other side of the flow divider and the guiding member form the second outlet.

[0012] Preferably, a limiting member is provided on the outer side of the flow guide, and the limiting member abuts against the housing.

[0013] Preferably, the outer side of the base is provided with a first protrusion, and the inner side of the fixing seat is provided with a second protrusion that abuts against the first protrusion.

[0014] Preferably, a flow restrictor is provided on the outer side of the nozzle core, and the surface of the flow restrictor has at least one spiral groove.

[0015] Preferably, there is a first gap between the base and the housing, the first gap being connected to the through hole and the flow hole respectively.

[0016] Preferably, a second gap is provided between the housing and the flow guide, the second gap being connected to the flow hole and the interval respectively.

[0017] Preferably, one end of the adjusting member extends into the first channel and is connected to the nozzle core. The outer side of one end of the adjusting member is provided with a first thread, and the inner side of the nozzle core is provided with a second thread that matches the first thread.

[0018] Preferably, a third thread is provided on the outer side of the middle part of the nozzle core, and a fourth thread matching the third thread is provided on the inner side of the housing.

[0019] Preferably, a fifth thread is provided on the outer side of one end of the nozzle core, and a sixth thread matching the fifth thread is provided on the inner side of the base.

[0020] Preferably, a first sealing ring is provided between the nozzle core and the housing, and a first groove is provided on the inner side of the housing, with the first sealing ring placed in the first groove.

[0021] Preferably, a second sealing ring is provided between the housing and the base, and a second groove is provided on the inner side of the base, with the second sealing ring placed in the second groove.

[0022] Preferably, a third sealing ring is provided between the base and the fixing seat, and a third groove is provided on the inner side of the fixing seat, and the third sealing ring is placed in the third groove.

[0023] The beneficial effects of this utility model are as follows: This utility model is used to install on a spray gun to atomize the slurry sprayed from the spray gun. It includes a fixed base, a flow guiding assembly, a nozzle core, and an adjusting component. The inner side of the fixed base is provided with threads for connecting with the spray gun. The flow guiding assembly is installed on the fixed base, and the nozzle core passes through the flow guiding assembly. The adjusting component is installed at one end of the flow guiding assembly. The adjusting component is a screw with a central hole. The bottom of the screw nut is provided with two symmetrical openings connecting the central hole. The slurry is sprayed out from the openings. The nozzle core has a first channel inside. One end of the adjusting component and one end of the flow guiding assembly form a... The first outlet and the first channel are connected. The inlet of the first channel is located at the end near the fixed base. The slurry flows from the first channel into the middle hole of the adjusting component, then flows out from the opening of the adjusting component, and finally is sprayed out through the first outlet. The user can adjust the size of the first outlet by adjusting the nut, thereby adjusting the atomization effect of the slurry. The flow guiding component is provided with a second channel. The inlet of the second channel is also located at the end near the fixed base, and the outlet is located near the first outlet. The second channel is used to transport high-pressure gas, so that the slurry can be sprayed further and the conveying direction of the slurry can be changed. This utility model separates the flow guiding component and the nozzle core, so that the nozzle core only needs to be set with the first channel, reducing the diameter of the nozzle core, thereby reducing the size of the first channel, making the slurry sprayed from the first channel finer and improving the atomization effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is an exploded view of the present invention.

[0026] Figure 3 This is a cross-sectional view of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the adjusting component of this utility model.

[0028] Figure 5 This is a schematic diagram of the nozzle core of this utility model.

[0029] Figure 6 This is a schematic diagram of the flow guide of this utility model.

[0030] Figure 7 This is a cross-sectional view of the housing of this utility model.

[0031] Figure 8 This is a schematic diagram of the base of this utility model.

[0032] Figure 9 This is a schematic diagram of the structure of the fixing base of this utility model.

[0033] The components are as follows: 1. Fixed base; 11. Second protrusion; 12. Third groove; 2. Flow guiding component; 21. Second channel; 22. Base; 221. Through hole; 222. First protrusion; 223. Sixth thread; 224. Second groove; 23. Housing; 231. Flow hole; 232. Fourth thread; 233. First groove; 24. Flow guide; 241. Spacing; 242. Second outlet; 243. Limiting component; 25. First gap; 26. Second gap; 27. First sealing ring; 28. Second sealing ring; 29. ​​Third sealing ring; 3. Nozzle core; 31. First channel; 32. Flow divider; 33. Flow limiter; 331. Spiral groove; 34. Second thread; 35. Third thread; 36. Fifth thread; 4. Adjusting component; 41. First outlet; 42. First thread; 43. Transmission channel. Detailed Implementation

[0034] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." In this utility model, unless otherwise explicitly specified and limited, terms such as "installed," "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The following is in conjunction with the appendix Figures 1-9 The present invention will be further described in detail with reference to specific embodiments, but this is not intended to limit the present invention.

[0036] Example 1

[0037] A nozzle for mounting on a spray gun to atomize slurry sprayed from the spray gun includes a mounting base 1, a flow guiding assembly 2, a nozzle core 3, and an adjusting component 4. The inner surface of the mounting base 1 has threads for connection with the spray gun. The flow guiding assembly 2 is mounted on the mounting base 1. The nozzle core 3, made of copper, is inserted into the flow guiding assembly 2. The adjusting component 4 is a screw with a central hole. The bottom of the screw has two symmetrical openings connecting to the central hole, from which the slurry is sprayed out. The nozzle core 3 has a first channel 31 inside. One end of the adjusting component 4 and one end of the flow guiding assembly 2 form a first outlet 41. The first channel 31 and the first outlet 41 are connected. The inlet of the first channel 31 is located at one end near the fixed base 1. The slurry flows from the first channel 31 into the middle hole of the adjusting member 4, then flows out from the opening of the adjusting member 4, and finally sprays out through the first outlet 41. The user can adjust the size of the first outlet 41 by adjusting the nut, thereby adjusting the atomization effect of the slurry. The guide component 2 is provided with a second channel 21. The inlet of the second channel 21 is also located at one end near the fixed base 1, and the outlet is located near the first outlet 41. The second channel 21 is used to transport high-pressure gas, so that the slurry can be sprayed further and the direction of slurry transport can be changed. By separating the flow guiding component 2 and the nozzle core 3, the nozzle core 3 only needs to be configured with the first channel 31, thus reducing the diameter of the nozzle core 3. This allows for a smaller size of the first channel 31, which in turn reduces its diameter. Consequently, the atomization diameter at the nozzle tip is reduced, resulting in a smaller diameter of the sprayed paint after atomization. This reduces paint waste when spraying small workpieces, saving paint and making the slurry sprayed from the first channel 31 finer. The atomization diameter of the sprayed slurry can be made even smaller, improving the atomization effect.

[0038] In this embodiment, the flow guiding assembly 2 includes a base 22, a housing 23, and a flow guiding member 24. The base 22 is mounted on the fixed base 1. One end of the nozzle core 3 passes through the flow guiding member 24 and the housing 23 in sequence and is connected to the base 22. One end of the base 22 is provided with a step that abuts against one end of the nozzle core 3, so that the nozzle core 3 cannot completely pass through the base 22. The base 22, the housing 23, and the flow guiding member 24 are all tubular structures. One end of the flow guiding member 24 extends into one end of the housing 23, and the other end of the housing 23 extends into one end of the base 22.

[0039] In this embodiment, the surface of the base 22 has at least one through hole 221, the surface of the housing 23 has at least one flow hole 231, a gap 241 is formed between the flow guide 24 and the nozzle core 3, and the second channel 21 is composed of the through hole 221, the flow hole 231 and the gap 241 connected in sequence. This design facilitates production and installation.

[0040] In this embodiment, a second outlet 242 is formed between one end of the guide member 24 and the nozzle core 3, and the second outlet 242 is connected to the second channel 21. One end of the guide member 24 has an outwardly extending arc, and the gas can flow along the arc to the second outlet 242.

[0041] In this embodiment, a flow divider 32 is provided at one end of the nozzle core 3. The flow divider has a horn structure and multiple arc-shaped grooves. One side of the flow divider 32 and the adjusting member 4 form a first outlet 41, and the other side of the flow divider 32 and the guide member 24 form a second outlet 242. The flow divider 32 can make the flow of slurry or gas smoother, thus playing a guiding role.

[0042] In this embodiment, a limiting member 243 is provided on the outer side of the flow guide 24, and the limiting member 243 abuts against one end of the housing 23. By providing the limiting member 243, the flow guide 24 can be prevented from extending excessively into the housing 23, thus affecting the flow of gas.

[0043] In this embodiment, a first protrusion 222 is provided on the outer side of the base 22, and a second protrusion 11 is provided on the inner side of the fixing seat 1, which abuts against the first protrusion 222. By providing the first protrusion 222 and the second protrusion 11, the base 22 can be placed at a designated position on the fixing seat 1.

[0044] In this embodiment, a flow restrictor 33 is provided on the outer side of the nozzle core 3, and the surface of the flow restrictor 33 has at least one spiral groove 331. By providing the spiral groove 331, the resistance of air to the blown gas can be reduced, allowing the gas to be blown further.

[0045] Example 2

[0046] The difference between this embodiment and embodiment 1 is that a first gap 25 is provided between the base 22 and the housing 23, and the first gap 25 connects the through hole 221 and the flow hole 231 respectively. By setting the first gap 25, the through hole 221 and the flow hole 231 can be connected in a staggered manner.

[0047] In this embodiment, a second gap 26 is provided between the housing 23 and the flow guide 24, and the second gap 26 is connected to the flow hole 231 and the interval 241 respectively. By providing the second gap 26, the flow hole 231 and the interval 241 can be connected in a staggered manner.

[0048] In this embodiment, one end of the adjusting member 4 extends into the first channel 31 and is connected to the nozzle core 3. A first thread 42 is provided on the outer side of one end of the adjusting member 4, and a second thread 34 matching the first thread 42 is provided on the inner side of the nozzle core 3. A transmission channel 43 is provided on the adjusting member 4, and the transmission channel 43 is connected to the first outlet 41 and the first channel 31 respectively.

[0049] In this embodiment, a third thread 35 is provided on the outer side of the middle part of the nozzle core 3, and a fourth thread 232 matching the third thread 35 is provided on the inner side of the housing 23.

[0050] In this embodiment, a fifth thread 36 is provided on the outer side of one end of the nozzle core 3, and a sixth thread 223 matching the fifth thread 36 is provided on the inner side of the base 22.

[0051] In this embodiment, a first sealing ring 27 is provided between the nozzle core 3 and the housing 23. The first sealing ring 27 is used to enhance the sealing performance. A first groove 233 is provided on the inner side of the housing 23, and the first sealing ring 27 is placed in the first groove 233.

[0052] In this embodiment, a second sealing ring 28 is provided between the housing 23 and the base 22. The second sealing ring 28 is used to enhance the airtightness. A second groove 224 is provided on the inner side of the base 22, and the second sealing ring 28 is placed in the second groove 224.

[0053] In this embodiment, a third sealing ring 29 is provided between the base 22 and the fixed seat 1. The third sealing ring 29 is used to enhance the sealing performance. A third groove 12 is provided on the inner side of the fixed seat 1, and the third sealing ring 29 is placed in the third groove 12.

[0054] The other structures in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0055] Obviously, this utility model is used to install on a spray gun to atomize the slurry sprayed from the spray gun. It includes a fixed base, a flow guiding assembly, a nozzle core, and an adjusting component. The inner side of the fixed base has threads for connection with the spray gun. The flow guiding assembly is mounted on the fixed base, and the nozzle core passes through the flow guiding assembly. The adjusting component is installed at one end of the flow guiding assembly and is a screw with a central hole. The bottom of the screw has two symmetrical openings connecting to the central hole, from which the slurry is sprayed out. The nozzle core has a first channel inside, and one end of the adjusting component and one end of the flow guiding assembly form a first outlet. The first channel and the first outlet are connected. The inlet of the first channel is located at the end near the fixed base. The slurry flows from the first channel into the middle hole of the adjusting component, then flows out from the opening of the adjusting component, and finally is sprayed out through the first outlet. The user can adjust the size of the first outlet by adjusting the nut, thereby adjusting the atomization effect of the slurry. The flow guiding component is provided with a second channel. The inlet of the second channel is also located at the end near the fixed base, and the outlet is located near the first outlet. The second channel is used to transport high-pressure gas, so that the slurry can be sprayed further and the conveying direction of the slurry can be changed. This utility model separates the flow guiding component and the nozzle core, so that the nozzle core only needs to be set with the first channel, reducing the diameter of the nozzle core, thereby reducing the size of the first channel, making the slurry sprayed from the first channel finer and improving the atomization effect.

[0056] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on the utility model are within the protection scope of the utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the utility model.

Claims

1. A nozzle, characterized in that, The device includes a fixed base (1), a flow guiding assembly (2), a nozzle core (3), and an adjusting member (4). The flow guiding assembly (2) is mounted on the fixed base (1). The nozzle core (3) passes through the flow guiding assembly (2). The adjusting member (4) is mounted on one end of the flow guiding assembly (2). The nozzle core (3) has a first channel (31) inside. One end of the adjusting member (4) and one end of the flow guiding assembly (2) form a first outlet (41). The first channel (31) and the first outlet (41) are connected. The flow guiding assembly (2) has a second channel (21).

2. The showerhead of claim 1, wherein The flow guiding assembly (2) includes a base (22), a housing (23) and a flow guiding element (24). The base (22) is mounted on the fixed seat (1). One end of the nozzle core (3) passes through the flow guiding element (24) and the housing (23) in sequence and is connected to the base (22).

3. The showerhead of claim 2, wherein, The surface of the base (22) has at least one through hole (221), the surface of the housing (23) has at least one flow hole (231), a gap (241) is formed between the flow guide (24) and the nozzle core (3), and the second channel (21) is composed of the through hole (221), the flow hole (231) and the gap (241) connected in sequence.

4. The showerhead of claim 2, wherein A second outlet (242) is formed between one end of the guide member (24) and the nozzle core (3), and the second outlet (242) is connected to the second channel (21).

5. The showerhead of claim 4, wherein, One end of the nozzle core (3) is provided with a flow divider (32), one side of the flow divider (32) and the adjusting member (4) form the first outlet (41), and the other side of the flow divider (32) and the guide member (24) form the second outlet (242).

6. The showerhead of claim 2, wherein A limiting member (243) is provided on the outside of the flow guide (24), and the limiting member (243) abuts against the housing (23).

7. The showerhead of claim 2, wherein The outer side of the base (22) is provided with a first protrusion (222), and the inner side of the fixing seat (1) is provided with a second protrusion (11) that abuts against the first protrusion (222).

8. The showerhead of claim 1, wherein A flow restrictor (33) is provided on the outside of the nozzle core (3), and the surface of the flow restrictor (33) has at least one spiral groove (331).

9. The showerhead of claim 3, wherein, There is a first gap (25) between the base (22) and the housing (23), and the first gap (25) is connected to the through hole (221) and the flow hole (231) respectively.

10. The showerhead of claim 3, wherein A second gap (26) is provided between the housing (23) and the flow guide (24), and the second gap (26) is connected to the flow hole (231) and the interval (241).

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