Nozzle for a spray gun

Abstract

The utility model relates to a nozzle used in a spray gun in the technical field of spray gun nozzles. When a nozzle connecting assembly is installed on one side of the spray gun mounting assembly, a swivel ring is rotated so that an internal thread cooperates with an external thread to drive a mounting head to slide to the right side of the swivel ring, so that a second retaining ring is engaged with a groove cavity of a first retaining groove, a third retaining ring is engaged with a groove cavity of a second retaining groove, and a first retaining ring is engaged with a groove cavity of a third retaining groove. When the mounting head moves to the right side of the swivel ring, a semicircular spring piece is engaged with the groove cavity of a semicircular groove, so that during use of the nozzle connecting assembly, the connection between the external thread and the internal thread is not easy to loosen. The contact area between the outer surface of the connecting pipe and the cooling water is increased by setting a water trough, and the cooling of the connecting pipe is accelerated. The circulation of cooling water is promoted by setting a water guide plate one and a water guide plate two, and the cooling of the connecting pipe is further accelerated, the accumulation of powder particles on the inner surface of the nozzle body is reduced, the service life of the nozzle connecting assembly is increased, and the quality of the coating of the sprayed product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray gun nozzles, in particular to a nozzle used for a spray gun. Background Art

[0002] The JK3000 spray gun is an important component of the supersonic spray system. It can be said that the spray gun is the heart of the entire system. The entire spray gun includes a nozzle, a combustion chamber, a combustion head, a fuel injector, a powder delivery valve, etc.

[0003] The spray gun nozzle should be checked and replaced regularly. A damaged nozzle will affect the speed of the flame and particles. Regularly polish the sealing surface of the nozzle and the inside of the nozzle cavity. Regularly check the sealing surface size of the nozzle, and if it exceeds the tolerance, it must be scrapped. Be very careful when replacing the nozzle to avoid scratches.

[0004] The outer surface of the existing nozzle design is a smooth surface with limited heat dissipation area. The burning airflow passing through the inner surface of the nozzle will generate a large amount of heat. The nozzle cannot be cooled in time, resulting in excessively high nozzle temperature. The molten powder coating particles will accumulate on the inner surface of the nozzle, causing the flame flow ejected from the nozzle to be turbulent, thereby reducing the spraying quality or even causing defects. Utility Model Content

[0005] In order to solve the problem that the nozzle surface temperature is difficult to cool down in time as mentioned in the above background technology, the utility model provides the following technical solutions:

[0006] A nozzle for a spray gun, comprising a nozzle connection assembly;

[0007] A spray gun mounting assembly for conveying paint to the interior of the nozzle connecting assembly is installed at one end of the nozzle connecting assembly, and a fastening assembly for cooperating with the spray gun mounting assembly to fasten the nozzle connecting assembly is installed at the connection between the nozzle connecting assembly and the spray gun mounting assembly.

[0008] The nozzle connection assembly includes a nozzle body, a connecting pipe is installed at one end of the nozzle body, a plurality of water grooves for cooling the connecting pipe with cooling water are opened on the outer wall of the connecting pipe, and water guide plate 1 and water guide plate 2 are installed on both sides of the connecting pipe for guiding the flow of cooling water.

[0009] The spray gun mounting assembly comprises a mounting head, one end of which is mounted with a third retaining ring, and an outer wall of the third retaining ring is provided with a semicircular groove.

[0010] The fastening assembly comprises a swivel, and a semicircular spring piece is installed on the inner wall of the swivel for cooperating with the semicircular groove to limit the swivel.

[0011] Furthermore, a limiting ring for limiting the position of the swivel is installed at one end of the connecting pipe, and a spray hole 1 is opened inside the limiting ring.

[0012] Furthermore, a first retaining ring is installed at one end of the limiting ring, a first groove is processed on the inner wall of the retaining ring, a second groove is processed on the outer wall of the retaining ring, and an annular groove for limiting the rotating ring is opened in the middle of the limiting ring.

[0013] Furthermore, the outer wall of the mounting head is processed with external threads, and the middle part of the mounting head is provided with two spray holes for circulating paint, and one end of the mounting head is installed with a second retaining ring, and the middle parts of the second and third retaining rings are processed with a third slot.

[0014] Furthermore, the second retaining ring is engaged with the groove cavity of the first groove, the third retaining ring is engaged with the groove cavity of the second groove, and the first retaining ring is engaged with the groove cavity of the third groove.

[0015] Furthermore, an anti-skid groove is provided on the outer wall of the swivel for anti-skid purposes, and an internal thread is processed on the inner wall of the swivel for engaging with an external thread control limit ring and an installation head for engagement.

[0016] Furthermore, a snap ring is installed on one side of the rotating ring, and the snap ring slides in the groove cavity of the annular snap groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] When the nozzle connecting assembly is installed on one side of the spray gun mounting assembly, the swivel is rotated so that the internal thread cooperates with the external thread to drive the mounting head to slide to the right side of the swivel, so that the second retaining ring is engaged with the groove cavity of the first retaining groove, the third retaining ring is engaged with the groove cavity of the second retaining groove, and the first retaining ring is engaged with the groove cavity of the third retaining groove. When the mounting head moves to the right side of the swivel, the semicircular spring piece is engaged with the groove cavity of the semicircular groove, so that the connection between the external thread and the internal thread of the nozzle connecting assembly is not easy to loosen during use. The contact area between the outer surface of the connecting pipe and the cooling water is increased by setting the water trough, which accelerates the cooling of the connecting pipe. The circulation of cooling water is promoted by setting the water guide plate 1 and the water guide plate 2, which further accelerates the cooling of the connecting pipe, reduces the accumulation of powder particles on the inner surface of the nozzle body, improves the service life of the nozzle connecting assembly, and improves the quality of the coating of the spray product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the nozzle connection assembly of the utility model;

[0021] Figure 3It is a structural schematic diagram of the spray gun installation assembly of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the fastening assembly of the utility model.

[0023] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0024] 001- Nozzle connection assembly;

[0025] 100-nozzle body, 200-connecting pipe, 210-water channel, 211-water guide plate 1, 212-water guide plate 2, 300-limiting ring, 310-spray hole 1, 320-retaining ring 1, 321-first clamping groove, 322-second clamping groove, 330-annular clamping groove;

[0026] 002-Spray gun installation assembly;

[0027] 400-mounting head, 410-spray hole 2, 420-retaining ring 2, 430-retaining ring 3, 431-semicircular groove, 440-third clamping groove, 450-external thread;

[0028] 003- Fastening components;

[0029] 500-swivel, 510-anti-slip groove, 520-internal thread, 530-semicircular spring, 600-circular snap ring. DETAILED DESCRIPTION

[0030] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0031] See also Figure 1-Figure 4 The utility model provides a nozzle for a spray gun, including a nozzle connecting assembly 001, a spray gun mounting assembly 002 and a fastening assembly 003. A plurality of water grooves 210 are provided in the middle of a connecting pipe 200 to increase the contact area between the outer surface of the connecting pipe 200 and the cooling water, so that heat can be transferred more efficiently, thereby reducing the temperature of the connecting pipe 200, reducing the accumulation of powder particles on the inner surface of the nozzle body 100, increasing the life of the nozzle connecting assembly 001, and improving the quality of the coating of the sprayed product.

[0032] The water guide plate 1 211 and the water guide plate 212 are provided to guide the cooling water, promote the heated cooling water to quickly move away from the connecting pipe 200, and take away the surface heat of the connecting pipe 200, which helps to quickly cool down the connecting pipe 200.

[0033] The nozzle connecting assembly 001 includes a nozzle body 100, and a connecting pipe 200 for conveying paint to the interior of the nozzle body 100 is fixedly installed at the left end of the nozzle body 100. The outer wall of the connecting pipe 200 is provided with a plurality of water grooves 210 for cooling the connecting pipe 200 with cooling water. Through the provision of the water grooves 210, the contact area between the outer surface of the connecting pipe 200 and the cooling water can be increased. Water guide plate 1 211 and water guide plate 212 for guiding the flow of cooling water are installed on both sides of the connecting pipe 200 to promote the circulation of cooling water.

[0034] A limiting ring 300 for limiting the position of the rotating ring 500 is fixedly installed at the left end of the connecting tube 200. A spray hole 310 is opened inside the limiting ring 300. The paint is transported to the inner cavity of the connecting tube 200 through the spray hole 310, and the cooled paint is sprayed onto the product surface through the middle hole of the nozzle body 100.

[0035] A retaining ring 320 is fixedly installed on the left end of the limiting ring 300, the inner wall of the retaining ring 320 is processed with a first groove 321, the outer wall of the retaining ring 320 is processed with a second groove 322, and the middle part of the limiting ring 300 is provided with an annular groove 330 for limiting the rotating ring 500.

[0036] A spray gun mounting assembly 002 for conveying paint to the interior of the nozzle connecting assembly 001 is installed at one end of the nozzle connecting assembly 001. The spray gun mounting assembly 002 includes a mounting head 400. A spray hole 2 410 for circulating paint is opened in the middle of the mounting head 400, and the spray hole 2 410 is connected to the spray hole 1 310 to facilitate the conveying of paint.

[0037] The right end of the mounting head 400 is fixedly mounted with a second collar 420. The right end of the mounting head 400 is fixedly mounted with a third collar 430, and the inner diameter of the second collar 420 is the same as the diameter of the second spray hole 410, and the outer diameter of the third collar 430 is the same as the outer diameter of the mounting head 400, and the inner diameter of the third collar 430 is larger than the outer diameter of the second collar 420.

[0038] The outer wall of the third collar 430 is provided with a plurality of semicircular grooves 431. The second collar 420 is engaged with the groove cavity of the first groove 321, and the third collar 430 is engaged with the groove cavity of the second groove 322. The middle parts of the second collar 420 and the third collar 430 are processed with a third groove 440, and the first collar 320 is engaged with the groove cavity of the third groove 440. The outer wall of the mounting head 400 is processed with an external thread 450, and the external thread 450 is meshed with the internal thread 520, so that when the rotating ring 500 is rotated, the second collar 420 moves toward the groove cavity of the first groove 321.

[0039] The connection between the nozzle connection assembly 001 and the spray gun mounting assembly 002 is provided with a fastening assembly 003 for fastening the nozzle connection assembly 001 in cooperation with the spray gun mounting assembly 002. The fastening assembly 003 includes a swivel 500, the outer wall of which is provided with an anti-skid groove 510 for anti-skid, the inner wall of the swivel 500 is processed with an inner thread 520 for cooperating with the outer thread 450 to control the engagement between the limit ring 300 and the mounting head 400, and the inner wall of the swivel 500 is fixedly provided with a plurality of semicircular spring pieces 530 for cooperating with the semicircular groove 431 to limit the swivel 500. A snap ring 600 is fixedly provided on the right side of the swivel 500, and the snap ring 600 slides in the groove cavity of the annular snap groove 330.

[0040] When the nozzle connecting assembly 001 is installed on one side of the spray gun mounting assembly 002, the rotating ring 500 is rotated so that the internal thread 520 cooperates with the external thread 450 to drive the mounting head 400 to slide to the right side of the rotating ring 500, so that the second ring 420 is engaged with the groove cavity of the first groove 321, the third ring 430 is engaged with the groove cavity of the second groove 322, and the first ring 320 is engaged with the groove cavity of the third groove 440. When the mounting head 400 moves to the right side of the rotating ring 500, the semicircular spring piece 530 is engaged with the groove cavity of the semicircular groove 431. During the use of the nozzle connecting component 001, the connection between the external thread 450 and the internal thread 520 is not easy to loosen. The setting of the water groove 210 increases the contact area between the outer surface of the connecting pipe 200 and the cooling water, which accelerates the cooling of the connecting pipe 200. The setting of the water guide plate 1 211 and the water guide plate 212 promotes the circulation of cooling water, further accelerates the cooling of the connecting pipe 200, reduces the accumulation of powder particles on the inner surface of the nozzle body 100, increases the service life of the nozzle connecting component 001, and improves the quality of the coating of the sprayed product.

[0041] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A nozzle for a spray gun, comprising a nozzle connection assembly (001), characterized in that: A spray gun mounting assembly (002) for conveying paint to the interior of the nozzle connecting assembly (001) is installed at one end of the nozzle connecting assembly (001), and a fastening assembly (003) for cooperating with the spray gun mounting assembly (002) to fasten the nozzle connecting assembly (001) is installed at the connection between the nozzle connecting assembly (001) and the spray gun mounting assembly (002); The nozzle connection assembly (001) comprises a nozzle body (100), a connecting pipe (200) is installed at one end of the nozzle body (100), a plurality of water grooves (210) for cooling the connecting pipe (200) are provided on the outer wall of the connecting pipe (200), and a water guide plate 1 (211) and a water guide plate 2 (212) for guiding the flow of cooling water are installed on both sides of the connecting pipe (200); The spray gun mounting assembly (002) comprises a mounting head (400), one end of which is mounted with a third retaining ring (430), and an outer wall of the third retaining ring (430) is provided with a semicircular groove (431); The fastening assembly (003) comprises a rotating ring (500), and a semicircular spring piece (530) is installed on the inner wall of the rotating ring (500) for cooperating with the semicircular groove (431) to limit the rotating ring (500).

2. A nozzle for a spray gun according to claim 1, characterized in that: A limiting ring (300) for limiting the position of the rotating ring (500) is installed at one end of the connecting pipe (200), and a spray hole 1 (310) is provided inside the limiting ring (300).

3. A nozzle for a spray gun according to claim 2, characterized in that: A first retaining ring (320) is installed at one end of the limiting ring (300), a first retaining groove (321) is processed on the inner wall of the first retaining ring (320), a second retaining groove (322) is processed on the outer wall of the first retaining ring (320), and an annular retaining groove (330) for limiting the rotating ring (500) is opened in the middle of the limiting ring (300).

4. The nozzle for a spray gun according to claim 1, characterized in that: The outer wall of the mounting head (400) is processed with an external thread (450), and a second spray hole (410) for circulating paint is opened in the middle of the mounting head (400). A second retaining ring (420) is installed at one end of the mounting head (400), and a third slot (440) is processed in the middle of the second retaining ring (420) and the third retaining ring (430).

5. The nozzle for a spray gun according to claim 4, characterized in that: The second retaining ring (420) is engaged with the groove cavity of the first retaining groove (321), the third retaining ring (430) is engaged with the groove cavity of the second retaining groove (322), and the first retaining ring (320) is engaged with the groove cavity of the third retaining groove (440).

6. The nozzle for a spray gun according to claim 1, characterized in that: The outer wall of the rotating ring (500) is provided with an anti-skid groove (510) for preventing skidding, and the inner wall of the rotating ring (500) is processed with an internal thread (520) for cooperating with the external thread (450) to control the engagement of the limit ring (300) and the mounting head (400).

7. The nozzle for a spray gun according to claim 1, characterized in that: A snap ring (600) is installed on one side of the rotating ring (500), and the snap ring (600) slides in the groove cavity of the annular snap groove (330).

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