Rotary powder thermal spraying device

Abstract

The utility model discloses a rotary type powder thermal spraying device which comprises an air inlet pipe, a heating device and a rotary assembly, a powder through pipe is arranged at the upper end of the air inlet pipe, the air inlet pipe is communicated with the powder through pipe, the heating device is arranged on the right side of the air inlet pipe, and an air outlet pipe is arranged on the right side of the heating device. A rotating assembly is arranged on the outer side of the air outlet pipe, a spray head is movably installed on the right side of the air outlet pipe, and the spray head can rotate in the part to be sprayed through the rotating assembly. In actual use, through the design of the rotating assembly, especially the rotation of the spray head driven by the motor, it can be ensured that all-directional and uniform spraying and covering of the powder material in the circular workpiece can be achieved, the problem that in a traditional spraying method, spraying dead corners or uneven thickness possibly exist is effectively solved through the rotating motion, and the spraying quality is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder thermal spraying, in particular to a rotary powder thermal spraying device. Background Art

[0002] Powder thermal spraying is a highly efficient and versatile device that heats powder material to a molten or semi-molten state. It is then precisely sprayed onto the workpiece surface using a high-speed airflow using a gas sprayer or plasma sprayer, forming a coating with a variety of excellent properties, including corrosion resistance, wear resistance, and high-temperature resistance. These coatings not only improve the overall performance of the workpiece but also extend its service life.

[0003] In actual use, when spraying the inside of a circle, if the workpiece is not convenient for rotational spraying, uneven spraying may occur. Due to the limited internal space of the circle and the fixed spraying angle, it is difficult to ensure that the powder material is evenly distributed on the entire inner wall surface, which may lead to uneven coating thickness, affecting the coating quality and the final performance of the workpiece.

[0004] Therefore, a rotary powder thermal spraying device is now needed to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the present invention provides a rotary powder thermal spraying device to solve the problem of uneven spraying when spraying the inside of a circular body mentioned in the background technology. If the workpiece is not convenient to perform rotary spraying, it may face the problem of uneven spraying.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotary powder thermal spraying device, comprising an air inlet pipe, a heating device and a rotating assembly, a powder through-pipe is provided at the upper end of the air inlet pipe, the air inlet pipe is communicated with the powder through-pipe, a heating device is provided on the right side of the air inlet pipe, an air outlet pipe is provided on the right side of the heating device, a rotating assembly is provided on the outside of the air outlet pipe, a nozzle is movably installed on the right side of the air outlet pipe, and the nozzle can be rotated in the workpiece to be sprayed by the rotating assembly, the rotating assembly includes a motor base, the motor base is installed on the outside of the air outlet pipe, a rotating motor is fixed to the upper end of the motor base, the front end of the rotating motor is connected to the first transmission gear through a transmission rod, a second transmission gear is fixed on the outside of the nozzle, and the first transmission gear is meshed with the second transmission gear.

[0007] Preferably, an air intake interface is provided on the left side of the air intake pipe.

[0008] Preferably, grooves are provided on both sides of the powder passage and the air inlet pipe.

[0009] Preferably, a rod bracket is fixed to the front end of the motor base, and the transmission rod is movably installed inside the rod bracket.

[0010] Preferably, the nozzle is arc-shaped.

[0011] Preferably, the rotating motor is a servo motor.

[0012] Preferably, the motor base and the transmission rod are both made of low thermal conductivity materials.

[0013] Compared with the existing technology, the utility model has the following beneficial effects: the rotating assembly is driven by the motor, and the motor drives the nozzle to rotate through the transmission rod and gear system, so that the nozzle can rotate inside the circular workpiece to be sprayed; the rotation of the nozzle can ensure that the powder material is evenly distributed at all angles inside the circular workpiece; this rotational motion effectively solves the problems of spraying dead angles or uneven thickness that may exist in traditional spraying methods, and significantly improves the spraying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the side sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model from a side sectional view looking upwards;

[0017] Figure 4 This is a schematic diagram of the explosion structure of the utility model.

[0018] In the figure: 1. Air inlet pipe; 11. Air inlet interface; 2. Powder passage; 21. Groove; 3. Heating device; 4. Air outlet pipe; 5. Rotating assembly; 51. Rotating motor; 511. Transmission rod; 52. Motor base; 521. Rod bracket; 53. First transmission gear; 54. Second transmission gear; 6. Spray nozzle; 7. Parts to be sprayed. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are protected by the present invention.

[0020] See also Figure 1-4The utility model provides a technical solution: a rotary powder thermal spraying device, including an air inlet pipe 1, a heating device 3 and a rotating assembly 5, a powder through-pipe 2 is provided at the upper end of the air inlet pipe 1, the air inlet pipe 1 is communicated with the powder through-pipe 2, a heating device 3 is provided on the right side of the air inlet pipe 1, an air outlet pipe 4 is provided on the right side of the heating device 3, a rotating assembly 5 is provided on the outside of the air outlet pipe 4, a spray head 6 is movably installed on the right side of the air outlet pipe 4, the spray head 6 can be rotated in the to-be-sprayed workpiece 7 through the rotating assembly 5, the rotating assembly 5 includes a motor base 52, the motor base 52 is installed on the outside of the air outlet pipe 4, a rotating motor 51 is fixed on the upper end of the motor base 52, the front end of the rotating motor 51 is connected to the first transmission gear 53 through a transmission rod 511, a second transmission gear 54 is fixed on the outside of the spray head 6, and the first transmission gear 53 is meshed with the second transmission gear 54;

[0021] During use, the air inlet pipe 1 serves as a gas channel for carrying the powder material to the heating device 3. The heating device 3 heats the passing airflow and powder mixture to make it reach a molten or semi-molten state. The air outlet pipe 4 guides the heated powder material-gas mixture to the nozzle 6. The rotating component 5 is driven by the motor, and the motor drives the nozzle 6 to rotate through the transmission rod 511 and the gear system, so that the nozzle 6 can rotate inside the circular workpiece to be sprayed; the rotation of the nozzle 6 can ensure that the powder material is evenly distributed at all angles inside the circular workpiece.

[0022] An air intake interface 11 is provided on the left side of the air intake pipe 1 , and the air intake interface 11 is a connection point between the air intake pipe 1 and an external air source.

[0023] Grooves 21 are provided on both sides of the powder through-tube 2 and the air inlet pipe 1. The design of the grooves 21 provides a reliable fixing point for pipe clamps or other special tools, so that when the powder through-tube 2 or the air inlet pipe 1 needs to be rotated, disassembled, inspected or maintained, these pipes can be clamped and fixed more conveniently, thereby improving work efficiency and safety.

[0024] A rod bracket 521 is fixed to the front end of the motor base 52, and the transmission rod 511 is movably installed inside the rod bracket 521. The rod bracket 521 ensures the stability and reliability of the transmission rod 511 during the rotation and power transmission process.

[0025] The nozzle 6 is arc-shaped. The design of the arc-shaped nozzle 6 enables the sprayed powder and gas mixture to be sprayed onto the surface of the workpiece along a specific path and direction.

[0026] The rotary motor 51 is a servo motor, and its position, speed and acceleration can be precisely controlled by a controller.

[0027] The motor base 52 and the transmission rod 511 are both made of low thermal conductivity materials. The application of low thermal conductivity materials on the motor base 52 and the transmission rod 511 forms a thermal isolation barrier, which effectively blocks the direct transfer of heat generated when the device is working to the rotating motor 51, preventing the motor from heating up due to external heat sources.

[0028] As an embodiment of the present invention: when using the rotary powder thermal spraying device, first connect the air inlet interface 11 to the external air source, turn on the external air source, and introduce an appropriate amount of gas into the air inlet pipe 1 through the air inlet interface 11. The gas carries the powder material to the heating device 3, and the heating device 3 heats the passing air flow and powder mixture to make it reach a molten or semi-molten state. The heated powder-gas mixture is guided to the nozzle 6 through the air outlet pipe 4, and driven by the servo motor, the nozzle 6 begins to rotate inside the circular workpiece; the motor drives the nozzle 6 to rotate through the transmission rod 511 and the gear system, so that the nozzle 6 can rotate inside the circular workpiece to be sprayed; the rotation of the nozzle 6 can ensure that the powder material is evenly distributed at all angles inside the circular workpiece; thereby completing the use of the rotary powder thermal spraying device.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary powder thermal spraying device, comprising an air inlet pipe (1), a heating device (3) and a rotating assembly (5), wherein a powder passage (2) is provided at the upper end of the air inlet pipe (1), the air inlet pipe (1) and the powder passage (2) are in communication, and a heating device (3) is provided on the right side of the air inlet pipe (1), characterized in that: An air outlet pipe (4) is provided on the right side of the heating device (3), a rotating assembly (5) is provided on the outside of the air outlet pipe (4), a spray head (6) is movably installed on the right side of the air outlet pipe (4), and the spray head (6) can be rotated in the workpiece (7) to be sprayed through the rotating assembly (5); The rotating assembly (5) comprises a motor base (52), the motor base (52) being mounted on the outside of the air outlet pipe (4), a rotating motor (51) being fixed on the upper end of the motor base (52), a front end of the rotating motor (51) being connected to a first transmission gear (53) via a transmission rod (511), a second transmission gear (54) being fixed on the outside of the nozzle (6), and the first transmission gear (53) being meshed with the second transmission gear (54).

2. A rotary powder thermal spraying device according to claim 1, characterized in that: An air intake interface (11) is provided on the left side of the air intake pipe (1).

3. The rotary powder thermal spraying device according to claim 1, characterized in that: Grooves (21) are provided on both sides of the powder passage (2) and the air inlet pipe (1).

4. The rotary powder thermal spraying device according to claim 1, characterized in that: A rod bracket (521) is fixed to the front end of the motor base (52), and the transmission rod (511) is movably mounted inside the rod bracket (521).

5. The rotary powder thermal spraying device according to claim 1, characterized in that: The nozzle (6) is arc-shaped.

6. The rotary powder thermal spraying device according to claim 1, characterized in that: The rotating motor (51) is a servo motor.

7. The rotary powder thermal spraying device according to claim 1, characterized in that: The motor base (52) and the transmission rod (511) are both made of low thermal conductivity materials.

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