A spray gun gas shunt mechanism

Abstract

The utility model discloses a kind of spray gun spraying gas shunt mechanism, including shunt cavity, shunt ring, shunt cavity includes end face, end face outer periphery is protruded with a circle of side plate to the side of spray gun head, end face middle part is protruded with a circle of inner plate to the side of spray gun head, main gas flow hole, atomization gas flow hole are set in end face, the inner periphery of shunt ring and / or outer periphery is evenly provided with several centering teeth, to cooperate with inner plate and / or side plate, so that shunt ring is coaxially arranged with shunt cavity.The utility model's main gas flow hole, atomization gas flow hole are staggered and arranged in the inner and outer circle of end face, gas path of main gas flow hole, atomization gas flow hole is separated by shunt ring, since the mating surface of shunt ring and end face is annular, when assembling shunt ring, it is not necessary to rotate and adjust the assembly angle of shunt ring and shunt cavity, shunt ring can be installed at any angle, assembly process is convenient and fast, and positioning pin structure is saved, reduce the probability of damage in shunt ring assembly process.

Description

Technical Field

[0001] This utility model relates to the field of spray gun manufacturing technology, specifically to a spray gun spraying gas diversion mechanism. Background Technology

[0002] Spray guns are common paint spraying equipment. The airflow structure of a spray gun typically includes a main airflow that propels the paint forward, and a misting airflow that disperses the paint. To ensure that the main and misting airflows do not interfere with each other, a spray gun has a spray gas splitting mechanism near the nozzle.

[0003] like Figure 1-2 As shown, the existing spray gas splitting mechanism includes a splitting chamber 1 and a splitting ring 2. The splitting chamber 1 includes an end face 11, with a side plate 12 protruding from the outer periphery of the end face 11 towards the gun head, and an inner plate 13 protruding from the middle of the end face 11 towards the gun head. The end face 11 of the splitting chamber 1 is provided with a positioning hole 14, a main airflow hole 15, and an atomizing airflow hole 16. The splitting ring 2 is provided with a positioning pin 21 that cooperates with the positioning hole 14, and an "S-shaped" partition 22 for separating the main airflow hole 15 and the atomizing airflow hole 16. The positioning pin 21 and the partition 22 protrude on the splitting ring 2. When the splitting ring 2 is assembled on the splitting chamber 1, the partition 22 separates the main airflow and the atomizing airflow.

[0004] Existing spray gas splitting mechanisms have the following shortcomings:

[0005] 1. Since the main airflow hole 15 and the atomizing airflow hole 16 are separated by the partition 22, in order to ensure the installation position of the partition 22, the diversion ring 2 needs to be installed and positioned by the positioning hole 14 and the positioning pin 21. During the assembly process, the worker needs to rotate the diversion ring 2 so that the positioning pin 21 is aligned with the positioning hole 14 and inserted. The assembly process of the diversion ring 2 is time-consuming and laborious.

[0006] 2. Because the positioning pin 21 and positioning hole 14 are small and are blocked by the diversion ring 2 during the assembly process, workers often press the diversion ring 2 without rotating it so that the positioning pin 21 is aligned with the positioning hole 14. The positioning pin 21 is easily bent or broken when it sticks into the end face 11 of the diversion cavity 1, and the diversion ring 2 is scrapped. Utility Model Content

[0007] The purpose of this invention is to provide a spray gun spraying gas diversion mechanism.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0009] A spray gun spraying gas diversion mechanism includes a diversion chamber and a diversion ring. The diversion chamber includes an end face. A side plate protrudes from the outer periphery of the end face towards the spray gun head, and an inner plate protrudes from the middle of the end face towards the spray gun head. A main airflow hole and an atomizing airflow hole are formed on the end face. The main airflow hole and the atomizing airflow hole are radially offset from each other on the end face. The diversion ring is tightly attached to the end face, and the mating surface of the diversion ring and the end face is located between the main airflow hole and the atomizing airflow hole, so that part of the main airflow hole and the atomizing airflow hole are exposed on the radial inner and outer sides of the diversion ring, respectively.

[0010] The inner and / or outer circumference of the flow divider ring is provided with a number of centering teeth at even intervals to cooperate with the inner plate and / or side plate, so that the flow divider ring and the flow divider cavity are coaxially arranged.

[0011] As a further improvement of the present invention, the diverter ring is provided with a mounting groove, which is a circular ring concentric with the diverter ring. The mounting groove is located on the side that mates with the end face, and a sealing ring made of elastic material is provided in the mounting groove.

[0012] As a further improvement of the present invention, a first expansion groove is provided on the end face. The first expansion groove is in the shape of an arc concentric with the end face. The first expansion groove is connected to the atomizing airflow hole and separated from the main airflow hole. At least part of the first expansion groove is exposed outside the diversion ring.

[0013] As a further improvement of the present invention, a second expansion groove is provided on the end face. The second expansion groove is in the shape of an arc concentric with the end face. The second expansion groove is connected to the main airflow hole and separated from the atomizing airflow hole. At least part of the second expansion groove is exposed outside the diversion ring.

[0014] As a further improvement of this utility model, the inner circumference of the diversion ring is provided with six centering teeth at uniform intervals. The centering teeth are protruding from the inner circumferential surface of the diversion ring to cooperate with the inner plate, so that the diversion ring and the diversion cavity are coaxially arranged.

[0015] As a further improvement of this utility model, the outer circumference of the diversion ring is provided with four centering teeth at uniform intervals. The centering teeth are protruding from the outer circumferential surface of the diversion ring to cooperate with the side plate, so that the diversion ring and the diversion cavity are coaxially arranged.

[0016] Compared with the prior art, the technical advantages of this utility model are as follows:

[0017] The main airflow hole and the atomizing airflow hole of this utility model are staggered on the inner and outer rings of the end face. The air paths of the main airflow hole and the atomizing airflow hole are separated by the flow divider ring. Since the mating surface between the flow divider ring and the end face is annular, there is no need to rotate and adjust the assembly angle between the flow divider ring and the flow divider cavity when assembling the flow divider ring. The flow divider ring can be installed at any angle, making the assembly process convenient and quick. It also eliminates the need for a positioning pin structure, reducing the probability of damage to the flow divider ring during assembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the axial view structure of the flow divider cavity in the prior art;

[0019] Figure 2 This is a schematic diagram of the axial view structure of the diversion ring in the prior art;

[0020] Figure 3 This is a schematic diagram of the axial view structure of the flow divider cavity in a specific embodiment of this utility model;

[0021] Figure 4 This is an axial view structural diagram of a spray gun spraying gas diversion mechanism in Embodiment 1 of this utility model;

[0022] Figure 5 This is a schematic diagram of the axial view of the flow divider ring used to cooperate with the flow divider cavity in Embodiment 1 of this utility model;

[0023] Figure 6 This is a schematic diagram of the axial view structure of the other side of the diversion ring in Embodiment 1 of this utility model;

[0024] Figure 7 This is a cross-sectional view of the diversion ring in Embodiment 1 of this utility model;

[0025] Figure 8 This is an axial view structural diagram of a spray gun spraying gas diversion mechanism in Embodiment 2 of this utility model;

[0026] Figure 9 This is a schematic diagram of the axial view of the flow divider ring used to cooperate with the flow divider cavity on the side of Embodiment 2 of this utility model;

[0027] Figure 10 This is a schematic diagram of the axial view structure of the other side of the diversion ring in Embodiment 2 of this utility model;

[0028] Figure 11 This is a cross-sectional view of the diversion ring in Embodiment 2 of this utility model. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0030] Example 1

[0031] Please see Figures 3 to 7 A spray gun spraying gas diversion mechanism includes a diversion chamber 1 and a diversion ring 2. The diversion chamber 1 includes an end face 11. A side plate 12 protrudes from the outer periphery of the end face 11 towards the spray gun head. An inner plate 13 protrudes from the middle of the end face 11 towards the spray gun head. A main airflow hole 15 and an atomizing airflow hole 16 are provided on the end face 11. The main airflow hole 15 and the atomizing airflow hole 16 are radially offset from the end face 11. The diversion ring 2 is closely attached to the end face 11, and the mating surface of the diversion ring 2 and the end face 11 is located between the main airflow hole 15 and the atomizing airflow hole 16, so that part of the main airflow hole 15 and the atomizing airflow hole 16 are exposed on the radial inner and outer sides of the diversion ring 2, respectively.

[0032] The inner circumference of the diversion ring 2 is evenly provided with six centering teeth 23. The centering teeth 23 are protruding from the inner circumferential surface of the diversion ring 2. When the diversion ring 2 is installed on the diversion cavity 1, the centering teeth 23 abut against the outer side of the inner plate 13, so that the diversion ring 2 and the diversion cavity 1 are coaxially arranged.

[0033] It should be noted that the end face 11 is annular, and the radial staggered arrangement of the main airflow hole 15 and the atomizing airflow hole 16 on the end face 11 means that the main airflow hole 15 and the atomizing airflow hole 16 are at different distances from the center of the end face 11. The main airflow hole 15 is located closer to the inner side, and the atomizing airflow hole 16 is located closer to the outer side. After the main airflow hole 15 and the atomizing airflow hole 16 are separated by the flow divider ring 2, the air path of the main airflow is located inside the flow divider ring 2, and the air path of the atomizing airflow is located outside the flow divider ring 2.

[0034] Furthermore, the diverting ring 2 is provided with a mounting groove, which is a concentric annular shape. The mounting groove is located on the side that mates with the end face 11, and a sealing ring 26 made of elastic material is provided inside the mounting groove. The main structures of the diverting ring 2 and the diverting cavity 1 are both made of hard metal material. If the sealing ring 26 is not provided, in order to ensure a tight seal between the mating surfaces of the diverting ring 2 and the diverting cavity 1, the diverting ring 2 and the diverting cavity 1 would require high machining precision, which would be difficult to manufacture. However, with the sealing ring 26 provided, since the sealing ring 26 is elastic, the sealing of the mating surfaces of the diverting ring 2 and the diverting cavity 1 can be achieved by utilizing the elastic deformation of the sealing ring 26, and the machining precision of the diverting ring 2 and the diverting cavity 1 can be appropriately reduced.

[0035] Furthermore, the end face 11 is provided with a first expansion groove 17, which is an arc shape concentric with the end face 11. The first expansion groove 17 is connected to the atomizing airflow hole 16 and separated from the main airflow hole 15. At least part of the first expansion groove 17 is exposed outside the diversion ring 2.

[0036] The first expansion groove 17 is recessed on the end face 11. The purpose of setting the first expansion groove 17 is to increase the air volume of the atomizing airflow hole 16 and make the airflow from the atomizing airflow hole 16 smoother.

[0037] Furthermore, the end face 11 is provided with a second expansion groove 19, which is an arc shape concentric with the end face 11. The second expansion groove 19 is connected to the main airflow hole 15 and separated from the atomizing airflow hole 16. At least part of the second expansion groove 19 is exposed outside the diversion ring 2.

[0038] The second expansion groove 19 is recessed on the end face 11. The purpose of setting the second expansion groove 19 is to increase the air volume of the main airflow hole 15 and make the airflow from the main airflow hole 15 smoother.

[0039] Example 2

[0040] Please see Figures 8 to 11 In this embodiment, the structure of the spray gun spraying gas diversion mechanism is different from that in embodiment 1, except that the centering tooth 23 is set on the outer periphery of the diversion ring 2.

[0041] Specifically, the outer circumference of the diversion ring 2 is provided with four centering teeth 23 at even intervals. The centering teeth 23 are protruding from the outer circumferential surface of the diversion ring 2. When the diversion ring 2 is installed on the diversion cavity 1, the centering teeth 23 abut against the inner side surface of the side plate 12, so that the diversion ring 2 and the diversion cavity 1 are coaxially arranged.

[0042] Of course, in other embodiments, centering teeth 23 may also be provided on both the inner and outer circumferences of the diversion ring 2.

[0043] Compared with the prior art, the technical advantages of this utility model are as follows:

[0044] The main airflow hole 15 and the atomizing airflow hole 16 of this utility model are staggered on the inner and outer rings of the end face 11. The air paths of the main airflow hole 15 and the atomizing airflow hole 16 are separated by the flow divider ring 2. Since the mating surface between the flow divider ring 2 and the end face 11 is annular, there is no need to rotate and adjust the assembly angle between the flow divider ring 2 and the flow divider cavity 1 when assembling the flow divider ring 2. The flow divider ring 2 can be installed at any angle, making the assembly process convenient and quick. It also eliminates the need for the positioning pin 21 structure, reducing the probability of damage to the flow divider ring 2 during assembly.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model 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; and these 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 various embodiments of this utility model.

Claims

1. A spray gun spraying gas diversion mechanism, comprising a diversion chamber and a diversion ring, wherein the diversion chamber includes an end face, a side plate protruding from the outer periphery of the end face towards the spray gun head, an inner plate protruding from the middle of the end face towards the spray gun head, and a main airflow hole and an atomizing airflow hole are formed on the end face, characterized in that... The main airflow hole and the atomizing airflow hole are radially offset on the end face. The flow divider ring is closely attached to the end face, and the position of the flow divider ring and the mating surface of the end face is located between the main airflow hole and the atomizing airflow hole, so that part of the main airflow hole and the atomizing airflow hole are exposed on the radial inner and outer sides of the flow divider ring respectively. The inner and / or outer circumference of the flow divider ring is provided with a number of centering teeth at even intervals to cooperate with the inner plate and / or side plate, so that the flow divider ring and the flow divider cavity are coaxially arranged.

2. The spray gun spraying gas diversion mechanism according to claim 1, characterized in that, The diverter ring is provided with a mounting groove, which is a circular ring concentric with the diverter ring. The mounting groove is located on the side that mates with the end face, and a sealing ring made of elastic material is provided in the mounting groove.

3. The spray gun spraying gas diversion mechanism according to claim 1, characterized in that, The end face is provided with a first expansion groove, which is an arc shape concentric with the end face. The first expansion groove is connected to the atomizing airflow hole and separated from the main airflow hole. At least part of the first expansion groove is exposed outside the diversion ring.

4. The spray gun spraying gas diversion mechanism according to claim 1, characterized in that, The end face is provided with a second expansion groove, which is an arc shape concentric with the end face. The second expansion groove is connected to the main airflow hole and separated from the atomizing airflow hole. At least part of the second expansion groove is exposed outside the diversion ring.

5. The spray gun spraying gas diversion mechanism according to claim 1, characterized in that, The inner circumference of the flow divider ring is provided with six centering teeth at even intervals. The centering teeth are protruding from the inner circumferential surface of the flow divider ring to cooperate with the inner plate, so that the flow divider ring and the flow divider cavity are coaxially arranged.

6. The spray gun spraying gas diversion mechanism according to claim 1, characterized in that, The outer circumference of the flow divider ring is provided with four centering teeth at even intervals. The centering teeth protrude from the outer circumferential surface of the flow divider ring to cooperate with the side plate, so that the flow divider ring and the flow divider cavity are coaxially arranged.

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