Device for conveying powder

Abstract

The utility model relates to the technical field of powder spraying, in particular to a device for conveying powder, which comprises a first powder pipe and a second powder pipe, and the first end of the first powder pipe is connected with the first end of the second powder pipe through a first three-way pipe; the second end of the first powder pipe is connected with the second end of the second powder pipe through a second three-way pipe, and after the first powder pipe and the second powder pipe are connected, the first powder pipe and the second powder pipe are both in an arc shape. After powder coating enters the device, the powder coating collides with the inner peripheral wall of the first powder pipe and the inner peripheral wall of the second powder pipe for multiple times in the arc-shaped first powder pipe and the arc-shaped second powder pipe respectively, and in the collision process, large-particle coating gathered together can be separated, so that the powder coating is separated from the inner peripheral wall of the first powder pipe and the inner peripheral wall of the second powder pipe. According to the device, the large-particle coating is effectively dispersed before entering the spray gun, a series of negative effects caused by non-uniform powder sprayed by the spray gun are avoided, and therefore the spray gun has a better spraying effect.

Description

Technical Field

[0001] The present disclosure relates to the technical field of powder spraying, and in particular to a device for conveying powder. Background Art

[0002] As the global environment becomes increasingly severe, the country's environmental protection standards are getting higher and higher. This situation has changed the pattern of the coating industry. Traditional spray painting has been gradually eliminated due to its large pollution, while powder coating has very little environmental pollution, which is in line with the current development status. On the other hand, the effect of powder electrostatic spraying is also obvious in terms of mechanical strength, adhesion, corrosion resistance, and aging resistance. Due to the traditional spray painting process, the cost is also lower than the traditional spray painting process, and the market share of powder electrostatic spraying has been increasing.

[0003] Powder electrostatic spraying uses the principle of high-voltage electrostatic corona electric field. The metal guide cup on the spray gun head is connected to a high-voltage negative charge, and the workpiece to be coated is grounded to form a positive electrode, forming a strong electrostatic field between the spray gun and the workpiece. The powder electrostatic spray gun is mainly a spray tool used to coat the surface of the workpiece, and is mainly used for coating metals and other conductive materials. The powder pump is a power device that supplies powder to the powder electrostatic spray equipment, and is mainly used for powder electrostatic spraying. The powder pump transports the powder coating to the spray gun through the powder hose, and then the spray gun sprays the powder coating onto the workpiece to be coated. The workpiece to be coated is baked at high temperature and adheres to the surface of the workpiece. After the powder on the surface of the workpiece melts, it is cooled and adheres to the workpiece to be coated to provide rust protection or decorative effects for the workpiece.

[0004] However, due to the long-term accumulation of powder coating in the powder barrel, some powders will agglomerate with each other. These powders aggregate into large particles. This aggregated powder is easily sprayed on the surface of the workpiece, which can easily cause uneven spraying. Uneven spraying of powder will lead to inconsistent coating thickness in different parts of the sprayed surface, resulting in unsightly concave and convex reflective effects. In addition, areas where the coating is too thick are prone to waste of coating, and areas where the coating is too thin are prone to bottom exposure, which not only affects the appearance, but also causes the product to rust. Utility Model Content

[0005] In view of the deficiencies or problems existing in the prior art, the present disclosure provides a device for conveying powder, which can better disperse the powder that has gathered together, so that the spray gun has a better spraying effect.

[0006] The technical solution adopted by the present disclosure to solve the above technical problems is: a device for conveying powder, comprising a first powder hose and a second powder hose, wherein the first end of the first powder hose is connected to the first end of the second powder hose via a first three-way hose, and the second end of the first powder hose is connected to the second end of the second powder hose via a second three-way hose, and after the first powder hose and the second powder hose are connected, the first powder hose and the second powder hose are both arc-shaped.

[0007] As a preferred embodiment, the first three-way pipe includes a first interface and a second interface that are interconnected, the inner diameter of the first interface is adapted to the inner diameter of the first powder hose, the first interface is connected to the first end of the first powder hose, the inner diameter of the second interface is adapted to the inner diameter of the second powder hose, and the second interface is connected to the first end of the second powder hose.

[0008] As a preferred embodiment, the first three-way pipe further includes a third interface, the third interface is communicated with the first interface and the second interface respectively, and the third interface is used to connect the spray gun.

[0009] As a preferred embodiment, the second three-way pipe includes a fourth interface and a fifth interface that are interconnected, the inner diameter of the fourth interface is adapted to the inner diameter of the first powder hose, the fourth interface is connected to the second end of the first powder hose, the inner diameter of the fifth interface is adapted to the inner diameter of the second powder hose, and the fifth interface is connected to the second end of the second powder hose.

[0010] As a preferred embodiment, the second three-way pipe further includes a sixth interface, the sixth interface is communicated with the fourth interface and the fifth interface respectively, and the sixth interface is used to connect a powder pump.

[0011] As a preferred embodiment, the inner diameters of the first powder hose and the second powder hose are the same.

[0012] As a preferred implementation, the calibers of the first interface and the second interface are both smaller than the caliber of the third interface.

[0013] As a preferred implementation, the calibers of the fourth interface and the fifth interface are both smaller than the caliber of the sixth interface.

[0014] As a preferred embodiment, both the first powder hose and the second powder hose are soft hoses.

[0015] As a preferred embodiment, the sixth interface is further connected to a connector, the connector is connected to a third three-way pipe, and the third three-way pipe is connected to a third powder hose and a fourth powder hose.

[0016] Compared with the existing products, since the first end of the first powder tube is connected to the first end of the second powder tube by the first three-way pipe, and the second end of the first powder tube is connected to the second end of the second powder tube by the second three-way pipe, after the first powder tube and the second powder tube are connected, the first powder tube and the second powder tube are both arc-shaped. After the powder coating enters the device, it collides with the inner circumferential wall of the first powder tube and the inner circumferential wall of the second powder tube in the arc-shaped first powder tube and the second powder tube for many times. During the collision, the large particles of coating gathered together will be separated. That is, the device effectively disperses the large particles of coating before entering the spray gun, avoiding a series of adverse consequences caused by uneven powder sprayed from the spray gun, thereby enabling the spray gun to have a better spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present application. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 It is one of the structural schematic diagrams of a device for conveying powder disclosed in the present invention;

[0019] Figure 2 This is the second structural schematic diagram of a device for conveying powder disclosed in the present invention;

[0020] Figure 3 This is the third structural schematic diagram of a device for conveying powder disclosed in the present invention;

[0021] Figure 4 is a schematic diagram of the flow direction of the powder coating disclosed in the present invention in the device;

[0022] Figure 5 This is the fourth structural schematic diagram of a device for conveying powder disclosed in the present invention;

[0023] Figure 6 This is the fifth structural schematic diagram of a device for conveying powder disclosed in the present invention;

[0024] Figure 7 It is a cross-sectional view of placing the device into the box.

[0025] Description of reference numerals:

[0026] 1. First powder hose; 2. Second powder hose; 3. First interface; 4. Second interface; 5. Third interface; 6. Fourth interface; 7. Fifth interface; 8. Sixth interface; 10. First three-way pipe; 11. Second three-way pipe; 12. Third three-way pipe; 13. Fourth three-way pipe; 14. Third powder hose; 15. Fourth powder hose; 16. Fifth three-way pipe. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is described in detail, clearly and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0028] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0029] Please see Figure 1 to Figure 3 As shown, an embodiment of the present disclosure discloses a device for conveying powder, including a first powder hose 1 and a second powder hose 2, wherein the first end of the first powder hose 1 is connected to the first end of the second powder hose 2 via a first three-way pipe 10, and the second end of the first powder hose 1 is connected to the second end of the second powder hose 2 via a second three-way pipe 11. After the first powder hose 1 and the second powder hose 2 are connected, the first powder hose 1 and the second powder hose 2 are both arc-shaped. Specifically, the first powder hose 1 and the second powder hose 2 are soft hoses, or the first powder hose 1 and the second powder hose 2 are arc-shaped hard pipes, so that the first powder hose 1 and the second powder hose 2 are finally arc-shaped. It should be noted that the arc includes a semicircle. After the first powder tube 1 and the second powder tube 2 are connected, the first powder tube 1 and the second powder tube 2 form a ring or a nearly ring. After the powder coating enters the device, it collides multiple times with the inner circumferential wall of the first powder tube 1 and the inner circumferential wall of the second powder tube 2 in the arc-shaped first powder tube 1 and the second powder tube 2, respectively. During the collision, large particles of coating gathered together will be separated, that is, the device effectively disperses the large particles of coating before entering the spray gun, avoiding a series of adverse consequences caused by uneven powder sprayed from the spray gun, thereby enabling the spray gun to have a better spraying effect.

[0030] Further, the first three-way pipe 10 includes a first interface 3 and a second interface 4 that are interconnected, the inner diameter of the first interface 3 is adapted to the inner diameter of the first powder hose 1, the first interface 3 is connected to the first end of the first powder hose 1, the inner diameter of the second interface 4 is adapted to the inner diameter of the second powder hose 2, and the second interface 4 is connected to the first end of the second powder hose 2. The first three-way pipe 10 also includes a third interface 5, the third interface 5 is communicated with the first interface 3 and the second interface 4 respectively, and the third interface 5 is used to connect the spray gun. Preferably, in order to strengthen the sealing of the connection between the first three-way pipe 10 and the first powder hose 1 and the second powder hose 2, a sealing member can be added at the connection between the first interface 3 and the first powder hose 1 and the second interface 4 and the second powder hose 2. The third interface 5 can be directly connected to the spray gun or connected to the spray gun through a connecting pipe, and the user can make a choice according to needs.

[0031] Furthermore, the second three-way pipe 11 includes a fourth interface 6 and a fifth interface 7 that are interconnected, the inner diameter of the fourth interface 6 is adapted to the inner diameter of the first powder hose 1, the fourth interface 6 is connected to the second end of the first powder hose 1, the inner diameter of the fifth interface 7 is adapted to the inner diameter of the second powder hose 2, and the fifth interface 7 is connected to the second end of the second powder hose 2. The second three-way pipe 11 also includes a sixth interface 8, the sixth interface 8 is communicated with the fourth interface 6 and the fifth interface 7, respectively, and the sixth interface 8 is used to connect a powder pump. Preferably, in order to strengthen the sealing of the connection between the second three-way pipe 11 and the first powder hose 1 and the second powder hose 2, a sealing member can be added at the connection between the fourth interface 6 and the first powder hose 1 and the fifth interface 7 and the second powder hose 2.

[0032] Please also see Figure 4 As shown, it should be noted that the first three-way pipe 10 is a "T"-shaped structure, and the opening direction of the third interface 5 is perpendicular to the opening directions of the first interface 3 and the second interface 4. The inner diameters of the first powder tube 1 and the second powder tube 2 are the same, and the calibers of the first interface 3, the second interface 4, the fourth interface 6 and the fifth interface 7 are all equal. This arrangement makes it possible for the powder coating to enter the first powder tube 1 and the second powder tube 2 from the fourth interface 6 and the fifth interface 7 with equal probability when the powder coating just enters the device, that is, the powder coating can enter the first powder tube 1 and the second powder tube 2 more evenly, thereby avoiding too much powder coating entering the first powder tube 1 or too much entering the second powder tube 2, thereby causing the powder to gather in the first powder tube 1 or the second powder tube 2 or causing the first powder tube 1 or the second powder tube 2 to be blocked. The powder coating enters the first powder tube 1 and the second powder tube 2 evenly, respectively, and can disperse or separate the powder coating more thoroughly. The structure of the second three-way pipe 11 is the same as that of the first three-way pipe 10. The first three-way pipe 10 is connected to the first powder hose 1 and the second powder hose 2 by plugging, clamping or threading, and the second three-way pipe 11 is connected to the first powder hose 1 and the second powder hose 2 by plugging, clamping or threading, which is convenient for later maintenance and cleaning.

[0033] In particular, the calibers of the first interface 3 and the second interface 4 are both smaller than the caliber of the third interface 5, and the calibers of the fourth interface 6 and the fifth interface 7 are both smaller than the caliber of the sixth interface 8. Since the sixth interface 8 is connected to the powder pump, the caliber of the sixth interface 8 is set larger to facilitate the entry of powder coating, and the calibers of the fourth interface 6 and the fifth interface 7 are both smaller than the caliber of the sixth interface 8, so that the powder coating particles can be collided with the inner peripheral wall when entering the fourth interface 6 and the fifth interface 7, increasing the number of collisions, and since the powder coating particles are immediately diverted to enter the first powder tube 1 and the second powder tube 2 after entering from the sixth interface 8, the calibers of the fourth interface 6 and the fifth interface 7 do not need to be set too large, and setting the calibers of the fourth interface 6 and the fifth interface 7 to be smaller than the caliber of the sixth interface 8 can better disperse the powder particles. The calibers of the first interface 3 and the second interface 4 are both smaller than the caliber of the third interface 5, so that the powder particles can complete the final collision at the first interface 3 and the second interface 4 before leaving the first powder hose 1 and the second powder hose 2 to enter the spray gun, thereby increasing the number of collisions and better dispersing the powder particles. The caliber of the third interface 5 is larger than the caliber of the first interface 3 and the second interface 4 to facilitate the powder particles to leave the first powder hose 1 and the second powder hose 2 and enter the spray gun more smoothly.

[0034] Please also see Figure 5 to Figure 7 As shown, in one embodiment of the present disclosure, the sixth interface 8 is further connected to a connector, the connector is connected to a third three-way pipe 12, the third three-way pipe 12 is connected to a third powder hose 14 and a fourth powder hose 15, and the other ends of the third powder hose 14 and the fourth powder hose 15 are connected to a fourth three-way pipe 13. It should be noted that the structures of the third three-way pipe 12 and the fourth three-way pipe 13 are the same as those of the second three-way pipe 11 and the first three-way pipe 10, and the structures of the third powder hose 14 and the fourth powder hose 15 are the same as those of the first powder hose 1 and the second powder hose 2. The third three-way pipe 12 is connected to the third powder hose 14 and the fourth powder hose 15 in order to increase the length of the device, thereby increasing the length of the track of the powder coating particles walking in the device, increasing the number of collisions of the powder coating particles, and improving the dispersion effect of the powder particles. It is understandable that a fifth three-way pipe 16 can be added to the fourth three-way pipe 13 as needed, and the fifth three-way pipe 16 is connected to the fifth powder pipe and the sixth powder pipe. The number of the additional three-way pipes and the number of the powder pipes are not specifically limited here. The user can set multiple three-way pipes and powder pipes as needed to improve the dispersion of the powder coating particles. It should be noted that when a certain number of three-way pipes and powder pipes are added, the entire device can be arranged along the length direction or stacked. The stacking arrangement saves more space and does not affect the dispersion effect of the powder coating particles. After stacking, the device can be placed in a box for easy carrying.

[0035] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A device for conveying powder, characterized in that: The invention comprises a first powder hose (1) and a second powder hose (2), wherein the first end of the first powder hose (1) is connected to the first end of the second powder hose (2) via a first three-way pipe (10), and the second end of the first powder hose (1) is connected to the second end of the second powder hose (2) via a second three-way pipe (11). After the first powder hose (1) and the second powder hose (2) are connected, the first powder hose (1) and the second powder hose (2) are both arc-shaped.

2. The device for conveying powder according to claim 1, characterized in that: The first three-way pipe (10) comprises a first interface (3) and a second interface (4) which are interconnected, the inner diameter of the first interface (3) being adapted to the inner diameter of the first powder hose (1), the first interface (3) being connected to the first end of the first powder hose (1), the inner diameter of the second interface (4) being adapted to the inner diameter of the second powder hose (2), the second interface (4) being connected to the first end of the second powder hose (2).

3. The device for conveying powder according to claim 2, characterized in that: The first three-way pipe (10) further comprises a third interface (5), the third interface (5) being in communication with the first interface (3) and the second interface (4) respectively, and the third interface (5) being used for connecting a spray gun.

4. The device for conveying powder according to claim 1, characterized in that: The second three-way pipe (11) comprises a fourth interface (6) and a fifth interface (7) which are interconnected, the inner diameter of the fourth interface (6) being adapted to the inner diameter of the first powder hose (1), the fourth interface (6) being connected to the second end of the first powder hose (1), the inner diameter of the fifth interface (7) being adapted to the inner diameter of the second powder hose (2), the fifth interface (7) being connected to the second end of the second powder hose (2).

5. The device for conveying powder according to claim 4, characterized in that: The second three-way pipe (11) further comprises a sixth interface (8), the sixth interface (8) being in communication with the fourth interface (6) and the fifth interface (7) respectively, and the sixth interface (8) being used for connecting a powder pump.

6. The device for conveying powder according to claim 1, characterized in that: The first powder tube (1) and the second powder tube (2) have the same inner diameter.

7. The device for conveying powder according to claim 3, characterized in that: The calibers of the first interface (3) and the second interface (4) are both smaller than the caliber of the third interface (5).

8. The device for conveying powder according to claim 5, characterized in that: The calibers of the fourth interface (6) and the fifth interface (7) are both smaller than the caliber of the sixth interface (8).

9. The device for conveying powder according to claim 8, characterized in that The first powder hose (1) and the second powder hose (2) are both soft hoses.

10. The device for conveying powder according to claim 5, characterized in that: The sixth interface (8) is also connected to a connector, the connector is connected to a third three-way pipe (12), and the third three-way pipe (12) is connected to a third powder hose (14) and a fourth powder hose (15).

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