Powder supply mechanism for electrostatic powder spray gun

Abstract

The powder supply mechanism for the electrostatic powder spray gun comprises a powder barrel and a flow dividing piece, and the powder barrel is detachably connected to a shell of the electrostatic powder spray gun; the flow dividing piece is configured to communicate the powder barrel with the nozzle and is used for fluidizing powder in the powder barrel; the flow dividing piece comprises an air inlet pipe located in the powder barrel, the air inlet end of the air inlet pipe communicates with the fan assembly, and at least two air outlets are formed in the air outlet end of the air inlet pipe. According to the powder supply mechanism for the electrostatic powder spray gun, at least two air outlets are formed in the air outlet end of the air inlet pipe, and the air flowing out of the air inlet pipe is shunted through the two air outlets, so that the blowing direction and the blowing range of the air to powder in the powder barrel are increased, the flowability of the powder in the powder barrel is enhanced, and the fluidization property of the powder is enhanced; and the caking probability is reduced, so that the powder can uniformly flow into the nozzle, powder particles are more easily charged by an electrostatic field, and the electrostatic spraying efficiency and the adsorption effect are improved.

Description

Technical Field

[0001] This application relates to the field of spraying equipment technology, specifically to a powder supply mechanism for an electrostatic powder spray gun. Background Technology

[0002] An electrostatic powder spray gun is a device that uses electrostatic principles to uniformly spray powder coatings onto the surface of a workpiece. The electrostatic powder spray gun is equipped with a powder supply mechanism, which contains powder and is used to deliver the powder to the nozzle for powder coating. The powder supply mechanism includes a powder cylinder and a powder tube. One end of the powder tube is inserted into the powder cylinder, and the other end is connected to the nozzle, thereby guiding the powder from the powder cylinder into the powder tube.

[0003] However, if the powder tube is directly inserted into the powder cylinder, the powder inside the cylinder will naturally clump together under the influence of gravity. If the powder tube directly sucks in a large amount of clumped powder, the powder sucked in by the powder tube will also be clumped. As a result, when the nozzle is sprayed, the powder will have poor electrostatic charge, the powder will be unevenly discharged, and the spraying effect will be poor. Utility Model Content

[0004] In view of this, and in response to the technical problem of uneven powder supply in the powder supply mechanism of the prior art electrostatic powder spray gun, this application provides a powder supply mechanism for an electrostatic powder spray gun, which is equipped with a flow divider to effectively prevent powder agglomeration in the powder cylinder and ensure uniform powder delivery.

[0005] This application provides a powder supply mechanism for an electrostatic powder spray gun, comprising:

[0006] The powder cartridge is detachably connected to the housing of the electrostatic powder spray gun.

[0007] A flow divider is configured to connect the powder cylinder to the nozzle for fluidizing the powder inside the powder cylinder;

[0008] The diverter includes an air inlet pipe located inside the powder cylinder. The air inlet end of the air inlet pipe is connected to the fan assembly, and the air outlet end of the air inlet pipe has at least two air outlets.

[0009] Compared with the prior art, in the powder supply mechanism of the electrostatic powder spray gun of this application, the flow divider is used to connect the powder cylinder and the nozzle, and can guide the powder into the nozzle. The flow divider includes an air inlet pipe that extends into the powder cylinder. The air inlet end of the air inlet pipe is connected to the fan assembly. The gas generated by the fan assembly flows into the powder cylinder through the air inlet pipe. The air outlet end of the air inlet pipe is provided with at least two air outlets. The two air outlets divide the gas flowing out of the air inlet pipe, thereby increasing the blowing direction and blowing range of the gas on the powder in the powder cylinder. This enhances the fluidity of the powder in the powder cylinder, improves the fluidization of the powder, reduces the probability of agglomeration, and allows the powder to flow evenly into the nozzle. This makes it easier for the powder particles to be charged by the electrostatic field, improving the efficiency and adsorption effect of electrostatic spraying.

[0010] Preferably, the air outlets are opened on the radial side of the air inlet pipe, and the air outlets are distributed at intervals along the same circumference;

[0011] The air intake pipe is provided with a baffle plate at the air outlet end, and the baffle plate is arranged perpendicular to the axial direction.

[0012] In this embodiment, the air outlet is arranged circumferentially along the air inlet pipe and the opening is arranged radially, so that the gas is uniformly sprayed out radially outward with the air inlet pipe as the center, which improves the blowing range and effect of the gas on the powder and further improves the fluidization effect of the powder. The baffle is arranged in the axial direction of the air outlet end, which can block the axial direction of the air outlet end, and can prevent the powder from flowing back into the air inlet pipe when the flow divider is installed with the powder cylinder. On the other hand, it can reduce the size of the side air outlet and increase the air pressure of the side air outlet, which can better promote the flow of powder.

[0013] Preferably, the flow divider further includes a powder outlet channel, which is spaced apart from the air inlet pipe, and the axis of the powder outlet channel is parallel to the axis of the air inlet pipe.

[0014] One end of the powder outlet channel is connected to the nozzle, and the other end is connected to the powder cylinder.

[0015] In this embodiment, the powder outlet channel can guide the powder into the nozzle.

[0016] Preferably, the axial length of the powder outlet channel is less than the axial length of the air inlet pipe;

[0017] The outer wall of the intake pipe is provided with reinforcing ribs, and the length extension direction of the reinforcing ribs is parallel to the axis of the intake pipe.

[0018] Along the gas outlet direction, the radial width of the reinforcing rib gradually decreases.

[0019] In this embodiment, the powder outlet channel is relatively short, which reduces the probability of clumped powder entering the nozzle; the reinforcing ribs can strengthen the structure of the air inlet pipe.

[0020] Preferably, the housing of the electrostatic powder spray gun is provided with a mounting groove for mounting a powder cylinder, and the powder cylinder is threadedly connected to the mounting groove;

[0021] The diverter includes a mounting ring located between the powder cylinder and the mounting groove, and a sealing ring is provided between the mounting ring and the powder cylinder.

[0022] In this embodiment, the powder cylinder is threadedly connected to the housing, which allows for easy disassembly of the powder cylinder for feeding. The mounting ring is located between the mounting groove and the powder cylinder. During installation, the diverter is placed directly on the top of the powder cylinder, and the powder cylinder, carrying the diverter, is inserted into the mounting groove. The upper and lower ends of the diverter abut against the bottom of the mounting groove and the bottom of the powder cylinder, respectively, to fix the diverter to the powder cylinder and the housing, making installation convenient.

[0023] Preferably, the flow divider is provided with a retaining ring, which is located around the air inlet pipe and the powder outlet channel;

[0024] The outer diameter of the retaining ring is smaller than the inner diameter of the sealing ring, and the projection of the retaining ring onto the powder cylinder in the axial direction at least partially overlaps.

[0025] In this embodiment, the retaining ring can effectively shield the connection between the flow divider and the powder cylinder, preventing powder from seeping into the connection.

[0026] Preferably, the flow divider further includes a flow divider connector, which is detachably disposed at the air outlet end of the air inlet pipe, and the air outlet is disposed on the flow divider connector.

[0027] In this embodiment, by setting a flow divider, the manufacturing difficulty of the flow divider can be reduced. At the same time, different flow dividers can be replaced to achieve different degrees of fluidization effect on the powder.

[0028] Preferably, the outer wall of the intake pipe is provided with a limiting ring groove, and the inner wall of the diverter is provided with a mounting protrusion ring, which is disposed in the limiting ring groove. The limiting ring groove is used to axially limit the diverter.

[0029] In this embodiment, by setting a limiting ring groove and a mounting protrusion, it is convenient to quickly install and disassemble the diverter and the intake pipe.

[0030] Preferably, the diverter is provided with a support block, and the length extension direction of the support block is parallel to the axis direction;

[0031] The support block is located at the lower end of the intake pipe and is used to support the intake pipe.

[0032] In this embodiment, by providing a support block, the bottom of the intake pipe can be supported, ensuring the installation stability of the intake pipe and the splitter connector.

[0033] Preferably, the support blocks are provided in multiple ways, and at least one support block is provided between two adjacent air outlets;

[0034] Along the gas outlet direction, the radial width of the support block gradually increases.

[0035] In this embodiment, the width of the support block gradually increases along the axial direction, which can improve the structural strength and support stability of the support block. Attached Figure Description

[0036] Figure 1 This is a cross-sectional structural diagram of a powder electrostatic spray gun provided in an embodiment of this application;

[0037] Figure 2 This is a three-dimensional structural schematic diagram of a diversion component provided in an embodiment of this application;

[0038] Figure 3 yes Figure 1 A magnified view of part A;

[0039] Figure 4 yes Figure 1 A magnified view of part B;

[0040] Figure 5 This is a three-dimensional structural schematic diagram of a diversion connector provided in an embodiment of this application;

[0041] Figure 6 This is a three-dimensional cross-sectional structural diagram of a diversion connector provided in an embodiment of this application.

[0042] Reference numerals: 1. Flow divider; 2. Powder cylinder; 3. Housing; 4. Nozzle; 5. Fan assembly; 6. Sealing ring;

[0043] 11. Inlet pipe; 12. Flow divider; 13. Baffle plate; 14. Powder outlet channel; 15. Baffle ring; 16. Mounting ring; 17. Air outlet;

[0044] 111. Limiting ring groove; 112. Reinforcing rib;

[0045] 121. Support block; 122. Mounting ring. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0047] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0048] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0049] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 6 illustrate.

[0050] This application provides a powder supply mechanism for an electrostatic powder spray gun. The powder supply mechanism is used in the electrostatic powder spray gun, which includes a nozzle 4, a powder supply mechanism, and a fan assembly 5. The powder supply mechanism is connected to both the fan assembly 5 and the nozzle 4. The fan assembly 5 is used to introduce gas into the powder supply mechanism. The powder in the powder supply mechanism flows to the nozzle 4 under the drive of the gas, and the nozzle 4 sprays the powder onto the workpiece.

[0051] In this application, the powder supply mechanism includes a powder cylinder 2 and a flow divider 1. The powder cylinder 2 is detachably mounted on the housing 3 of the electrostatic powder spray gun, and is used to load powder. Figure 1 , Figure 3 As shown, the housing 3 is provided with a mounting groove, the inner wall of the mounting groove is provided with threads, the outer wall of the powder cylinder 2 is provided with threads, and the powder cylinder 2 is connected to the mounting groove by threads; as shown Figure 2 , Figure 3 As shown, the flow divider 1 is located at the upper end of the powder cylinder 2. The flow divider 1 is connected to the fan assembly 5, the nozzle 4, and the powder cylinder 2. The flow divider 1 acts as a carrier to guide the gas input from the fan assembly 5 into the powder cylinder 2 to fluidize the powder in the powder cylinder 2, and at the same time guide the fluidized powder into the nozzle 4.

[0052] Among them, such as Figure 2 , Figure 3As shown, the flow divider 1 is provided with an installation ring 16 on its outer side. The installation ring 16 is located between the top of the powder cylinder 2 and the bottom of the installation groove. During installation, the flow divider 1 is placed directly on the top of the powder cylinder 2. The powder cylinder 2, carrying the flow divider 1, is inserted into the installation groove together. The upper end and lower end of the flow divider 1 abut against the bottom of the installation groove and the top of the powder cylinder 2, respectively, so as to realize the limiting and fixing of the flow divider 1. The installation is convenient and does not require additional structure to install the flow divider 1. The structure is simple.

[0053] Furthermore, such as Figure 3 As shown, a sealing ring 6 is provided between the mounting ring 16 and the powder cylinder 2. The inner diameter of the sealing ring 6 is smaller than the inner diameter of the opening end of the powder cylinder 2, and the outer diameter of the sealing ring 6 is larger than the outer diameter of the mounting ring 16, so as to ensure sufficient sealing between the powder cylinder 2 and the flow divider 1.

[0054] Specifically, the diverter 1 will be further described; such as Figure 2 As shown, the flow divider 1 includes an air inlet pipe 11 and a discharge channel. The air inlet pipe 11 and the discharge channel are arranged parallel to each other at intervals, and the axis of the air inlet pipe 11 is parallel to the axis of the discharge channel. The blower assembly 5 is connected to the powder assembly through the air inlet pipe 11, and the nozzle 4 is connected to the powder cylinder 2 through the discharge channel. The air inlet pipe 11 extends axially into the powder cylinder 2, and there is a small gap between the bottom of the air inlet pipe 11 and the bottom of the powder cylinder 2. The air outlet end of the air inlet pipe 11 is provided with at least two air outlets 17, which are arranged at intervals. The two air outlets 17 divide the gas flowing out of the air inlet pipe 11, thereby increasing the blowing direction and blowing range of the gas on the powder in the powder cylinder 2. This enhances the fluidity of the powder in the powder cylinder 2, improves the fluidization of the powder, and reduces the probability of agglomeration. As a result, the powder can flow evenly into the nozzle 4, making the powder particles easier to be charged by the electrostatic field, thus improving the efficiency and adsorption effect of electrostatic spraying.

[0055] It should be noted that in this embodiment, the fan assembly 5 and the nozzle 4 are both located at the upper end of the flow divider 1, and the powder cylinder 2 is located at the lower end of the flow divider 1; the powder outlet channel 14 is open at the upper and lower end faces of the flow divider 1, that is, the powder outlet channel 14 penetrates the flow divider 1 axially.

[0056] In this embodiment, as Figures 2 to 3 As shown, the axial length of the powder outlet channel 14 is less than the axial length of the air inlet pipe 11. The air inlet pipe 11 is set to be longer, while the powder outlet channel 14 is set to be shorter. The purpose of this setting is that the air inlet pipe 11 can divert the powder at the bottom of the powder cylinder 2, increase the powder fluidization effect, and reduce the probability of powder accumulation under gravity. The fluidized gas volume is small and dispersed at the upper end of the powder cylinder 2. This fluidized powder can then enter the nozzle 4 through the discharge channel, which also reduces the probability of agglomerated powder entering the discharge channel, ensuring the powder charging effect in the nozzle 4, and improving the efficiency and adsorption effect of electrostatic spraying.

[0057] Furthermore, such as Figures 4 to 6 As shown, the air inlet pipe 11 has a straight pipe structure, and the air outlet 17 is located on the outer peripheral side wall of the air inlet pipe 11. The air outlet 17 opens on the radial side of the air inlet pipe 11, and the air outlets 17 are distributed along the same circumference on the air inlet pipe 11. This allows the gas to be uniformly sprayed outward radially with the axis of the air inlet pipe 11 as the center, which improves the blowing range and effect of the gas on the powder and further improves the fluidization effect of the powder.

[0058] Among them, such as Figures 4 to 6 As shown, the outlet end of the air inlet pipe 11 is provided with a baffle plate 13. The baffle plate 13 is arranged perpendicular to the axial direction and can block the gas flowing in the axial direction. On the one hand, it can prevent powder from flowing back into the air inlet pipe 11 when the diverter 1 is installed with the powder cylinder 2. On the other hand, it can reduce the size of the side outlet 17, increase the outlet pressure of the side outlet 17, and better promote the flow of powder.

[0059] like Figures 2 to 4 As shown, a reinforcing rib 112 is provided on the outer wall of the intake pipe 11. The reinforcing rib 112 is arranged along the axial direction of the intake pipe 11, and the length extension direction of the reinforcing rib 112 is parallel to the axis of the intake pipe 11. The axial length of the reinforcing rib 112 is less than the axial length of the intake pipe 11. In particular, along the gas outlet direction, the radial width of the reinforcing rib 112 gradually decreases, that is, the radial width of the reinforcing rib 112 near the intake end is greater than the radial width of the outlet end. This makes the connection area between the reinforcing rib 112 and the intake end larger, which improves the structural strength of the intake pipe 11. This allows the intake pipe 11 to be more stable when the fan assembly 5 supplies gas to the diverter 1, reduces the influence of gas pressure on the intake pipe 11, and ensures the diversion stability of the intake pipe 11.

[0060] Furthermore, such as Figure 2 , Figure 3 As shown, the flow divider 1 is provided with a retaining ring 15, which is located at the end of the flow divider 1 facing the powder cylinder 2. The retaining ring 15 is located around the air inlet pipe 11 and the powder outlet channel 14. The retaining ring 15 extends axially toward the bottom of the powder cylinder 2. The outer diameter of the retaining ring 15 is smaller than the inner diameter of the sealing ring 6, that is, the retaining ring 15 is located inside the sealing ring 6. The projection of the retaining ring 15 and the powder cylinder 2 in the axial direction at least partially overlaps, thereby effectively blocking the connection between the flow divider 1 and the powder cylinder 2, reducing the probability of powder penetrating radially into the gap between the sealing ring 6 and the powder cylinder 2 and the flow divider 1, and effectively ensuring the sealing performance of the powder cylinder 2.

[0061] Based on any of the above embodiments, the flow divider 1 is further extended.

[0062] like Figures 4 to 6As shown, the diverter 1 also includes a diverter connector 12, which is detachably disposed at the outlet end of the intake pipe 11. The diverter connector 12 is sleeved on the intake pipe 11, and the outlet 17 is disposed on the diverter connector 12. In this embodiment, as... Figure 5 As shown, there are two air outlets 17, which are equidistantly spaced along the outer periphery of the diverter 12.

[0063] like Figure 4 As shown, a limiting annular groove 111 is provided on the outer wall of the intake pipe 11, and the limiting annular groove 111 is recessed towards the axis of the intake pipe 11; a mounting protrusion 122 is provided on the inner wall of the diverter 12, and the mounting protrusion 122 protrudes towards the center of the axis of the diverter 12; the limiting annular groove 111 is used to accommodate the mounting protrusion 122. When the mounting protrusion 122 is located in the limiting annular groove 111, the limiting annular groove 111 is used to axially limit the diverter 12, so that the diverter 12 can be stably connected to the outlet end of the intake pipe 11.

[0064] The inner diameter of the mounting convex ring 122 can be set smaller than the inner diameter of the limiting ring groove 111, so that when the mounting convex ring 122 is engaged with the limiting ring groove 111, the mounting convex ring 122 has an automatic tightening tendency, so that the diverter 12 can be stably connected to the intake pipe 11 and will not easily detach.

[0065] It should be noted that, in this embodiment, as Figures 4 to 6 As shown, the intake pipe 11 has an opening only at the bottom in the axial direction. The baffle 13 is provided on the splitter 12. There is an axial gap between the baffle 13 and the bottom of the intake pipe 11, which is the axial length of the outlet 17.

[0066] Furthermore, such as Figures 4 to 6 As shown, the flow divider 12 is provided with a support block 121. Multiple support blocks 121 are provided, with at least one support block 121 between two adjacent air outlets 17. The outer side wall of the support block 121 is connected to the inner side wall of the flow divider 12, and the bottom of the support block 121 is connected to the baffle plate 13. The length extension direction of the support block 121 is parallel to the axial direction. The support block 121 is located at the lower end of the air inlet pipe 11. The support block 121 is used to support the air inlet pipe 11 and the bottom of the air inlet pipe 11 to increase the contact area and installation stability between the air inlet pipe 11 and the flow divider 12. This ensures that the flow divider 12 is not easy to shake when the gas flows from the air inlet pipe 11 to the flow divider 12, thus ensuring the stability of the gas outlet and the stability of the powder flow.

[0067] Among them, such as Figure 5 , Figure 6As shown, along the gas outlet direction, the radial width of the support block 121 gradually increases, that is, the radial width of the support block 121 near the air inlet pipe 11 is greater than the radial width near the baffle plate 13. On the one hand, this ensures the connection stability between the support block 121 and the baffle plate 13, and on the other hand, it ensures that while supporting the air inlet pipe 11, the outlet area of ​​the air inlet pipe 11 is not blocked.

[0068] In actual use, the blower assembly 5 inputs gas into the air inlet pipe 11. The gas flows axially along the air inlet pipe 11 and is split at the air outlet end of the air inlet pipe 11 to flow into the powder cylinder 2, fluidizing the powder in the powder cylinder 2. The fluidized powder floats upward and enters the discharge channel, and then enters the nozzle 4 through the discharge channel.

[0069] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0070] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A powder supply mechanism for an electrostatic powder spray gun, characterized in that, include: The powder cylinder (2) is detachably connected to the housing (3) of the powder electrostatic spray gun; A flow divider (1) is configured to connect the powder cylinder (2) to the nozzle (4) for fluidizing the powder in the powder cylinder (2); The diverter (1) includes an air inlet pipe (11), which is located inside the powder cylinder (2). The air inlet end of the air inlet pipe (11) is connected to the fan assembly (5), and the air outlet end of the air inlet pipe (11) is provided with at least two air outlets (17).

2. The powder supply mechanism for an electrostatic powder spray gun according to claim 1, characterized in that, The air outlet (17) is opened on the radial side of the air inlet pipe (11), and the air outlets (17) are distributed at intervals along the same circumference; The air outlet of the air inlet pipe (11) is provided with a baffle plate (13), which is arranged perpendicular to the axial direction.

3. The powder supply mechanism for an electrostatic powder spray gun according to claim 1, characterized in that, The diverter (1) also includes a powder outlet channel (14), which is spaced apart from the air inlet pipe (11), and the axis of the powder outlet channel (14) is parallel to the axis of the air inlet pipe (11). One end of the powder outlet channel (14) is connected to the nozzle (4), and the other end is connected to the powder cylinder (2).

4. The powder supply mechanism for an electrostatic powder spray gun according to claim 3, characterized in that, The axial length of the powder outlet channel (14) is less than the axial length of the air inlet pipe (11); The outer wall of the air intake pipe (11) is provided with a reinforcing rib (112), and the length extension direction of the reinforcing rib (112) is parallel to the axis of the air intake pipe (11). Along the gas outlet direction, the radial width of the reinforcing rib (112) gradually decreases.

5. The powder supply mechanism for an electrostatic powder spray gun according to claim 1, characterized in that, The housing (3) of the powder electrostatic spray gun is provided with a mounting groove for mounting a powder cylinder (2), and the powder cylinder (2) is threadedly connected to the mounting groove; The diverter (1) includes a mounting ring (16) located between the powder cylinder (2) and the mounting groove, and a sealing ring (6) is provided between the mounting ring (16) and the powder cylinder (2).

6. The powder supply mechanism for an electrostatic powder spray gun according to claim 5, characterized in that, The flow divider (1) is provided with a retaining ring (15), which is located outside the air inlet pipe (11) and the powder outlet channel (14); The outer diameter of the retaining ring (15) is smaller than the inner diameter of the sealing ring (6), and the projection of the retaining ring (15) and the powder cylinder (2) in the axial direction at least partially overlaps.

7. The powder supply mechanism for an electrostatic powder spray gun according to any one of claims 1 to 6, characterized in that, The diverter (1) further includes a diverter connector (12), which is detachably disposed at the outlet end of the air inlet pipe (11), and the outlet (17) is disposed on the diverter connector (12).

8. The powder supply mechanism for an electrostatic powder spray gun according to claim 7, characterized in that, The outer wall of the air intake pipe (11) is provided with a limiting ring groove (111), and the inner wall of the diverter (12) is provided with an installation protrusion ring (122). The installation protrusion ring (122) is located in the limiting ring groove (111), and the limiting ring groove (111) is used to axially limit the diverter (12).

9. The powder supply mechanism for an electrostatic powder spray gun according to claim 7, characterized in that, The diverter (12) is provided with a support block (121), and the length extension direction of the support block (121) is parallel to the axis direction; The support block (121) is located at the lower end of the air intake pipe (11) and is used to support the air intake pipe (11).

10. The powder supply mechanism for an electrostatic powder spray gun according to claim 9, characterized in that, The support block (121) is provided in multiple ways, and at least one support block (121) is provided between two adjacent air outlets (17); Along the gas outlet direction, the radial width of the support block (121) gradually increases.

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