Cooling device for laser cladding nozzle

Abstract

The utility model discloses a laser cladding nozzle cooling device which comprises a nozzle and a nozzle support, the nozzle is arranged on the lower side of the nozzle support, a cooling water cooling assembly and an auxiliary cooling assembly are arranged between the nozzle and the nozzle support, and the cooling water cooling assembly comprises a cooling water tank, a water pump, a water inlet pipe, a water return pipe, a cooling pipe and a heat conduction plate. A cavity is formed in the nozzle, the heat conducting plate is fixedly installed on the inner circumferential side of the cavity, the cooling pipe is arranged in the cavity and located on the circumferential side of the heat conducting plate, the cooling water tank is fixedly installed on one side of the nozzle support, and the water pump is fixedly installed on one side of the nozzle support. According to the laser cladding nozzle, through the arrangement of the cooling water cooling assembly, the nozzle can be cooled by starting the cooling water cooling assembly when the laser cladding nozzle continuously works, heat is continuously accumulated, and the temperature is continuously increased, so that the laser cladding nozzle is prevented from being damaged due to overheating, and the service life of the nozzle is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding nozzles, in particular to a laser cladding nozzle cooling device. Background Art

[0002] Laser cladding is a surface modification technology, which is widely used in the strengthening or modification of substrate surface properties or surface repair, etc. It can significantly improve the substrate surface hardness, corrosion resistance and wear resistance. The nozzle is one of the indispensable parts in laser cladding work. Laser cladding is also called laser melting or laser cladding, which is a new surface modification technology. It forms a metallurgically bonded additive cladding layer on the surface of the base by adding cladding material to the surface of the substrate and using a high-energy-density laser beam to melt it together with a thin layer on the surface of the substrate. The use of laser cladding technology has two important functions in the hydraulic support manufacturing industry: the first is that in the manufacturing process, this technology is used to modify the surface of the cylinder rod, column, etc., to enhance the surface corrosion resistance, wear resistance and strength; the second is that in the repair of worn and scrapped hydraulic support columns, the columns can be repaired quickly.

[0003] However, some related cladding nozzle technologies lack the function of cooling the nozzle. During the cladding process, the bottom of the laser cladding nozzle is very close to the molten pool. The laser cladding nozzle has to withstand the high heat caused by laser reflection and thermal radiation from the molten pool. As the laser cladding nozzle works continuously, the heat will continue to accumulate and the temperature will continue to rise, which will eventually cause the laser cladding nozzle to overheat and be damaged, which will reduce the service life of the laser cladding nozzle and is not conducive to the long-term use of the laser cladding nozzle. Therefore, it is urgent to design a laser cladding nozzle cooling device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a laser cladding nozzle cooling device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A laser cladding nozzle cooling device comprises a nozzle and a nozzle bracket, the nozzle is arranged at the lower side of the nozzle bracket, a cooling water cooling component and an auxiliary cooling component are arranged between the nozzle and the nozzle bracket, and the cooling water cooling component comprises a cooling water tank, a water pump, a water inlet pipe, a water return pipe, a cooling pipe and a heat conducting plate, a cavity is opened in the nozzle, the heat conducting plate is fixedly installed on the inner circumference of the cavity, the cooling pipe is arranged in the cavity, the cooling pipe is located on the circumference of the heat conducting plate, the cooling water tank is fixedly installed on one side of the nozzle bracket, the water pump is fixedly installed on one side of the nozzle bracket, the water pump input end is fixedly connected to the cooling water tank through a pipeline, the water inlet pipe and the water return pipe are respectively arranged on both sides of the nozzle bracket, one end of the water inlet pipe is fixedly connected to the water pump output end, the other end of the water inlet pipe is fixedly connected to one end of the cooling pipe, one end of the return pipe is fixedly connected to the cooling water tank, and the other end of the return pipe is fixedly connected to the other end of the cooling pipe.

[0007] The cooling pipe is in a conical spiral shape and is coiled in the cavity. The cooling pipe is in close contact with the heat conducting plate.

[0008] The auxiliary cooling component includes an air pump and an air pipe. The air pump is fixedly installed on one side of the nozzle bracket. The air pipe is arranged on one side of the nozzle bracket. One end of the air pipe is fixedly connected to the output end of the air pump, and the other end of the air pipe is fixedly installed in the cavity.

[0009] The other end of the gas delivery pipe is located on the upper side of the cooling pipe. A plurality of heat dissipation holes are provided around the nozzle, and the plurality of heat dissipation holes are communicated with the cavity.

[0010] A laser channel is provided on the upper side of the nozzle, powder delivery pipes are provided on both sides of the laser channel, and the cavity is located around the powder delivery pipes.

[0011] A filling port is arranged on the upper side of the cooling water tank, a water level scale is arranged on one side of the cooling water tank, and a condensation plate is fixedly installed on one side of the inner wall of the cooling water tank.

[0012] In the above technical solution, the utility model provides a laser cladding nozzle cooling device, which has the following beneficial effects:

[0013] (1) By setting up a cooling water cooling component, as the laser cladding nozzle works continuously, heat accumulates and the temperature continues to rise, the cooling water cooling component can be started to cool the nozzle, thereby avoiding overheating and damage to the laser cladding nozzle, thereby greatly improving the service life of the nozzle.

[0014] (2) By setting up an auxiliary cooling component, when the cooling water cooling component is able to cool the nozzle, the auxiliary cooling component can improve the cooling effect on the nozzle, thereby improving the cooling effect of the device when in use.

[0015] (3) By setting up the cooling pipe and the heat conducting plate, the heat inside the nozzle can be absorbed by the heat conducting plate, and then the cooling water circulates in the cooling pipe to take away the heat absorbed by the heat conducting plate, thereby reducing the heat accumulation inside the nozzle and increasing the service life of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The utility model provides an overall left-side structural schematic diagram of a laser cladding nozzle cooling device embodiment.

[0018] Figure 2 The utility model is a schematic diagram of the overall right side structure of a laser cladding nozzle cooling device embodiment provided.

[0019] Figure 3 A schematic diagram of the nozzle cross-section structure provided for an embodiment of a laser cladding nozzle cooling device of the utility model.

[0020] Figure 4 A schematic diagram of the cross-sectional structure of a cooling water tank provided in an embodiment of a laser cladding nozzle cooling device of the utility model.

[0021] 1. Nozzle; 2. Nozzle bracket; 3. Cooling water cooling component; 4. Cooling water tank; 5. Water level scale; 6. Water pump; 7. Water inlet pipe; 8. Water return pipe; 9. Cooling pipe; 10. Heat conduction plate; 11. Laser channel; 12. Powder delivery pipe; 13. Auxiliary cooling component; 14. Vacuum pump; 15. Air pipe; 16. Heat dissipation hole; 17. Filling port; 18. Condensation plate; 20. Cavity. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-4As shown, a laser cladding nozzle cooling device provided by an embodiment of the utility model includes a nozzle 1 and a nozzle bracket 2, the nozzle 1 is arranged at the lower side of the nozzle bracket 2, a cooling water cooling component 3 and an auxiliary cooling component 13 are arranged between the nozzle 1 and the nozzle bracket 2, the cooling water cooling component 3 includes a cooling water tank 4, a water pump 6, a water inlet pipe 7, a water return pipe 8, a cooling pipe 9 and a heat conduction plate 10, a cavity 20 is opened in the nozzle 1, the heat conduction plate 10 is fixedly installed on the inner peripheral side of the cavity 20, the cooling pipe 9 is arranged in the cavity 20, the cooling pipe 9 is located on the peripheral side of the heat conduction plate 10, the cooling water tank 4 is fixedly installed on one side of the nozzle bracket 2, the water pump 6 is fixedly installed on one side of the nozzle bracket 2, and the input end of the water pump 6 is connected to the cooling water tank 4 through a pipeline. Fixed connection, the water inlet pipe 7 and the water return pipe 8 are respectively arranged on both sides of the nozzle bracket 2, one end of the water inlet pipe 7 is fixedly connected to the output end of the water pump 6, the other end of the water inlet pipe 7 is fixedly connected to one end of the cooling pipe 9, one end of the return pipe 8 is fixedly connected to the cooling water tank 4, the other end of the return pipe 8 is fixedly connected to the other end of the cooling pipe 9, the cooling pipe 9 is a conical spiral shape coiled in the cavity 20, the cooling pipe 9 is fitted with the heat conduction plate 10, a laser channel 11 is opened on the upper side of the nozzle 1, powder feeding pipes 12 are arranged on both sides of the laser channel 11, the cavity 20 is located on the side around the powder feeding pipe 12, a filling port 17 is arranged on the upper side of the cooling water tank 4, a water level scale 5 is arranged on one side of the cooling water tank 4, and a condensation plate 18 is fixedly installed on one side of the inner wall of the cooling water tank 4.

[0024] Specifically, in the present embodiment, by setting up the cooling water cooling component 3, as the nozzle 1 works continuously, the heat accumulates and the temperature rises continuously, the heat on the nozzle 1 can be absorbed through the heat conducting plate 10 and concentrated on the heat conducting plate 10, and then the water pump 6 is started so that the water pump 6 transports the cooling water in the cooling water tank 4 to the cooling pipe 9 through the water inlet pipe 7. The cooling water flows in the cooling pipe 9 and can take away the heat on the heat conducting plate 10. Then the cooling water returns to the cooling water tank 4 through the return pipe 8. The cooling water that absorbs the heat can be cooled by the condensation plate 18 in the cooling water tank 4, so that the cooling water always maintains a certain temperature. Then the cooling water circulates in the cooling pipe 9, which can reduce the heat accumulation inside the nozzle 1, thereby improving the service life of the nozzle 1.

[0025] The utility model provides a laser cladding nozzle cooling device, the auxiliary cooling component 13 includes an air pump 14 and an air pipe 15, the air pump 14 is fixedly installed on one side of the nozzle bracket 2, the air pipe 15 is arranged on one side of the nozzle bracket 2, one end of the air pipe 15 is fixedly connected to the output end of the air pump 14, the other end of the air pipe 15 is fixedly installed in the cavity 20, the other end of the air pipe 15 is located on the upper side of the cooling pipe 9, and a plurality of heat dissipation holes 16 are opened on the side of the nozzle 1, and the plurality of heat dissipation holes 16 are connected to the cavity 20.

[0026] In another embodiment provided by the utility model, an auxiliary cooling component 13 is set up, and the vacuum pump 14 is started to transport the external air to the cavity 20 through the air pipe 15, so that the external air flows along the spiral shape of the cooling pipe 9. When the air flows, it will drive the heat on the heat conduction plate 10, and then the air will be dissipated through the heat dissipation holes 16, thereby improving the cooling effect of the nozzle 1.

[0027] Working principle: as the nozzle 1 works continuously, heat accumulates and the temperature rises continuously, the cooling water cooling component 3 can be started to circulate cooling water in the cooling pipe 9 to absorb the heat, thereby cooling the nozzle 1 and reducing the heat accumulation inside the nozzle 1 to avoid overheating and damage of the nozzle 1, thereby increasing the service life of the nozzle 1; and through the auxiliary cooling component 13, external air can be transported into the cavity 20 to absorb the heat, thereby improving the cooling effect of the nozzle 1.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser cladding nozzle cooling device, comprising a nozzle (1) and a nozzle holder (2), characterized in that: The nozzle (1) is arranged at the lower side of the nozzle bracket (2); a cooling water cooling component (3) and an auxiliary cooling component (13) are arranged between the nozzle (1) and the nozzle bracket (2); the cooling water cooling component (3) comprises a cooling water tank (4), a water pump (6), a water inlet pipe (7), a water return pipe (8), a cooling pipe (9) and a heat conduction plate (10); a cavity (20) is opened in the nozzle (1); the heat conduction plate (10) is fixedly mounted on the inner peripheral side of the cavity (20); the cooling pipe (9) is arranged in the cavity (20); the cooling pipe (9) is located on the peripheral side of the heat conduction plate (10); the cooling The water tank (4) is fixedly mounted on one side of the nozzle bracket (2), the water pump (6) is fixedly mounted on one side of the nozzle bracket (2), the input end of the water pump (6) is fixedly connected to the cooling water tank (4) through a pipeline, the water inlet pipe (7) and the water return pipe (8) are respectively arranged on both sides of the nozzle bracket (2), one end of the water inlet pipe (7) is fixedly connected to the output end of the water pump (6), the other end of the water inlet pipe (7) is fixedly connected to one end of the cooling pipe (9), one end of the water return pipe (8) is fixedly connected to the cooling water tank (4), and the other end of the water return pipe (8) is fixedly connected to the other end of the cooling pipe (9).

2. The laser cladding nozzle cooling device according to claim 1, characterized in that: The cooling pipe (9) is in a conical spiral shape and is coiled in the cavity (20), and the cooling pipe (9) is in close contact with the heat conducting plate (10).

3. The laser cladding nozzle cooling device according to claim 1, characterized in that: The auxiliary cooling component (13) comprises an air pump (14) and an air supply pipe (15), wherein the air pump (14) is fixedly mounted on one side of the nozzle bracket (2), and the air supply pipe (15) is arranged on one side of the nozzle bracket (2), one end of the air supply pipe (15) is fixedly connected to the output end of the air pump (14), and the other end of the air supply pipe (15) is fixedly mounted in the cavity (20).

4. The laser cladding nozzle cooling device according to claim 3, characterized in that: The other end of the air delivery pipe (15) is located on the upper side of the cooling pipe (9), and a plurality of heat dissipation holes (16) are provided on the periphery of the nozzle (1), and the plurality of heat dissipation holes (16) are connected to the cavity (20).

5. The laser cladding nozzle cooling device according to claim 4, characterized in that: A laser channel (11) is provided on the upper side of the nozzle (1), powder delivery pipes (12) are provided on both sides of the laser channel (11), and the cavity (20) is located around the powder delivery pipe (12).

6. The laser cladding nozzle cooling device according to claim 1, characterized in that: A filling port (17) is provided on the upper side of the cooling water tank (4), a water level scale (5) is provided on one side of the cooling water tank (4), and a condensation plate (18) is fixedly mounted on one side of the inner wall of the cooling water tank (4).

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