A pneumatic powder feeding double-beam wide-band coaxial cladding nozzle

Abstract

The utility model relates to laser broadband cladding technical field, and disclose a kind of pneumatic powder feeding double-beam broadband coaxial cladding nozzle, including connecting rod, connecting rod bottom is fixed with connecting frame by bolt, connecting frame inside is connected with adjusting ring, adjusting ring one side is connected with limit frame;Connecting frame outside is screw-connected with four machine screws, machine screw is used to adjust the position of adjusting ring;Limit frame bottom is connected with powder feeding nozzle, both sides of powder feeding nozzle are fixed with connecting plate by bolt, and the outside of powder feeding nozzle is fixedly connected with light shield by bolt;Powder feeding nozzle bottom both sides are fixedly connected with clamping plate by bolt;The relative position of adjusting ring is adjusted by loosening-tightening mode, just need to loosen and tighten diagonal machine screw to complete adjustment, adjusting ring relatively translates in connecting frame, and operation process is simple and fast, save time and manpower cost, can realize accurate control to the relative position of powder feeding nozzle and light spot, improve processing precision and product quality.

Description

Technical Field

[0001] This utility model relates to the field of laser broadband cladding technology, specifically a pneumatic powder-feeding dual-beam broadband coaxial cladding nozzle. Background Technology

[0002] In laser broadband cladding, the coaxial broadband powder feeding cladding nozzle is one of the most crucial components, affecting not only the quality of the broadband cladding process but also determining the powder utilization rate and subsequent processing allowance. Laser cladding technology, as an advanced surface modification technique, involves adding cladding material to the substrate surface and using a high-energy laser beam to simultaneously melt the cladding material and a thin layer on the substrate surface. Rapid solidification results in a surface coating with extremely low dilution and a metallurgical bond to the substrate, significantly improving the substrate's surface properties such as wear resistance, corrosion resistance, heat resistance, and oxidation resistance.

[0003] Existing pneumatic powder feeding cladding nozzles suffer from significant direct impact of airflow on the powder during powder introduction, making it difficult for the powder to distribute evenly after entering the nozzle. Since the airflow impact is not effectively buffered, powder is prone to splashing, which not only reduces powder utilization but may also contaminate the cladding equipment and processing environment. Furthermore, uneven powder distribution affects the uniformity and smoothness of the cladding surface, thereby reducing the product's appearance quality and performance. Therefore, a pneumatic powder feeding dual-beam wideband coaxial cladding nozzle is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatic powder feeding dual-beam broadband coaxial cladding nozzle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic powder feeding dual-beam broadband coaxial cladding nozzle, including a connecting rod, a connecting frame fixed to the bottom of the connecting rod by bolts, an adjusting ring connected to the inner side of the connecting frame, and a limit frame connected to one side of the adjusting ring;

[0006] The outer side of the connecting bracket is threaded with four grommets, which are used to adjust the position of the adjusting ring;

[0007] The bottom of the limiting frame is connected to a powder feeding nozzle, and both sides of the powder feeding nozzle are fixed with connecting plates by bolts. A light blocking plate is fixed to the outside of the powder feeding nozzle by bolts.

[0008] Both sides of the bottom of the powder feeding nozzle are fixedly connected with clamps by bolts;

[0009] The top of the connecting plate is provided with a second screw hole, and a waist-shaped groove and a limiting groove are provided on one side of the connecting plate respectively. The inner side of the second screw hole is threaded with a powder feeding interface for pneumatic powder feeding.

[0010] Preferably, the connecting rod is connected to a laser optical lens at its top, the adjusting ring has four flat surfaces on its outer side, and one end of the caliper screw abuts against one side of the flat surface.

[0011] Preferably, the second screw hole is connected to the waist-shaped groove, and a sealing ring that fits onto one side of the powder feeding nozzle is bonded to the inner side of the limiting groove.

[0012] Preferably, the limiting frame has an external thread at its top that is threaded to the inner side of the adjusting ring, and a first screw hole is provided on one side of the limiting frame. The inner side of the first screw hole is fixedly connected to the side of the powder feeding nozzle by a bolt.

[0013] Preferably, the powder feeding nozzle has several powder feeding holes on both sides that communicate with the waist-shaped groove, and the powder feeding nozzle has a cavity and a conveying groove communicating with the powder feeding holes on its inner side, and the lower edge of the powder feeding hole is lower than the lower edge of the waist-shaped groove.

[0014] Preferably, the powder feeding nozzle has water supply holes that are perpendicular to the powder feeding hole on its surface. A second water pipe interface is connected to the inside of the water supply hole. Several first connecting grooves are horizontally distributed inside the powder feeding nozzle. The inside of each first connecting groove is connected to a vertically distributed second connecting groove. Both the first and second connecting grooves are connected to the water supply hole.

[0015] Preferably, the light-blocking plate has several third screw holes on its top, a first water pipe interface is connected to the inside of each third screw hole, and a third connecting groove is provided on the inside of the light-blocking plate that communicates with the third screw holes.

[0016] Preferably, the light-blocking plate is sealed to one side with a first plug located on one side of the third connecting groove, and the powder feeding nozzle is sealed to one side with a second plug located on one side of the first connecting groove and the second connecting groove.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0018] 1. The relative position of the adjusting ring can be adjusted by loosening and tightening the diagonal screws. The adjusting ring moves relatively horizontally within the connecting frame. The operation is simple and quick, saving time and labor costs. It can achieve precise control of the relative position of the powder feeding nozzle and the light spot, improving processing accuracy and product quality.

[0019] 2. The powder is introduced into the waist-shaped groove through the pneumatic powder feeding interface. Because the waist-shaped groove forms a 90-degree angle with the axis of the powder feeding interface, the direct impact of the airflow on the powder is effectively reduced, allowing the powder to be initially dispersed and homogenized after entering the waist-shaped groove. The initially homogenized powder then enters the cavity on the powder feeding nozzle through the powder conveying hole. Inside the cavity, the powder undergoes further homogenization, and the impact force of the powder-carrying gas is further reduced. This secondary homogenization and impact reduction design helps ensure uniform powder distribution within the powder feeding nozzle and reduces powder splashing caused by airflow impact. The secondary homogenized powder then flows into the conveying groove between the clamping plate and the powder feeding nozzle. The powder slides down, forming two powder output streams on the left and right sides during the process. This helps ensure that the powder is accurately delivered to the target position and forms a stable powder stream. During the powder feeding process, a secondary air pressure buffer is used. In the waist-shaped groove and cavity, the powder is buffered by the air pressure, which helps reduce the amount of splashed powder caused by airflow impact and improves the powder's cohesion. This makes the powder feeding process more stable and reliable, improves the powder utilization rate and processing quality, and results in uniform powder output and good cohesion. This improves the uniformity and smoothness of the cladding surface, enhancing the product's appearance quality and performance.

[0020] Third, cooling water enters the water supply hole on the surface of the powder feeding nozzle through the second water pipe interface. The cooling water then flows through the first and second connecting grooves on the inner side of the powder feeding nozzle to form an annular water path. The design of the annular water path ensures that the cooling water can flow evenly through all parts of the powder feeding nozzle, thereby effectively cooling the powder feeding nozzle and preventing powder blockage due to excessive temperature. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the left-side structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the clamping plate structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the first metric screw of this utility model;

[0026] Figure 5This is a schematic diagram of the structure of the second screw of this utility model;

[0027] Figure 6 This is a schematic diagram of the adjusting ring structure of this utility model;

[0028] Figure 7 This is a schematic diagram of the external thread structure of this utility model;

[0029] Figure 8 This is a schematic diagram of the powder feeding hole structure of this utility model;

[0030] Figure 9 This is a schematic diagram of the structure at the water inlet of this utility model;

[0031] Figure 10 This is a schematic diagram of the waist-shaped groove structure of this utility model;

[0032] Figure 11 This is a schematic diagram of the structure at the third screw hole of this utility model;

[0033] Figure 12 This is a schematic diagram of the structure of the third connecting groove of this utility model.

[0034] Explanation of reference numerals in the attached drawings: 1. Connecting rod; 2. Adjusting ring; 3. Connecting frame; 4. Limiting frame; 401. External thread; 403. First screw hole; 5. Powder feeding nozzle; 501. Water supply hole; 502. Powder supply hole; 503. Cavity; 504. Conveying groove; 505. First connecting groove; 506. Second connecting groove; 6. Connecting plate; 601. Second screw hole; 602. Waist-shaped groove; 603. Limiting groove; 7. Light blocking plate; 701. Third screw hole; 702. Third connecting groove; 8. Clamping plate; 9. Powder feeding interface; 10. First water pipe interface; 11. Second water pipe interface; 12. Meter screw. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0037] Example

[0038] Please see Figure 1-12 This utility model provides a technical solution: a pneumatic powder feeding dual-beam broadband coaxial cladding nozzle, including a connecting rod 1, a connecting frame 3 fixed to the bottom of the connecting rod 1 by bolts, an adjusting ring 2 connected to the inner side of the connecting frame 3, and a limit frame 4 connected to one side of the adjusting ring 2; the inner side of the connecting frame 3 has a cavity, in which the adjusting ring 2 is placed, and by loosening and tightening, the relative position of the adjusting ring 2 can be adjusted within the centering and adjusting connecting frame 3, thereby achieving the purpose of adjusting the relative position of the powder feeding nozzle 5 and the light spot; the connecting rod 1, adjusting ring 2, connecting frame 3 and limit frame 4 are made of stainless steel 304, the top of the connecting rod 1 is connected to a laser optical lens, and the relative position of the powder and the optical focus in the Z direction can be adjusted by telescopic adjustment, the outer side of the adjusting ring 2 has four planes, which are respectively in the X / Y axis directions, and one end of the caliper screw 12 abuts against one side of the plane.

[0039] Four grommets 12 are threaded on the outside of the connecting frame 3. The grommets 12 are used to adjust the position of the adjusting ring 2. Adjusting the grommets 12 can adjust the position of the adjusting ring 2, and thus indirectly affect the relative position of the powder and the optical focus in the Z direction by changing the relative position of the powder feeding nozzle 5 and the laser spot. By loosening one grommet 12 and tightening the diagonal grommets 12, the adjusting ring 2 can be relatively translated within the connecting frame 3. The adjusting ring 2 is connected to the powder feeding nozzle 5, thereby achieving the purpose of adjusting the relative position of the powder feeding nozzle 5 and the laser spot. The bottom of the limiting frame 4 is connected to the powder feeding nozzle 5. Both sides of the powder feeding nozzle 5 are fixed with connecting plates 6 by bolts. The material of the connecting plates 6 is stainless steel 304. The outside of the powder feeding nozzle 5 is fixed with a light-blocking plate 7 by bolts.

[0040] Both sides of the bottom of the powder feeding nozzle 5 are fixedly connected to clamping plates 8 by bolts; the conveying groove 504 between the clamping plate 8 and the powder feeding nozzle 5 forms two powder output streams with corresponding widths on the left and right. The powder is homogenized and buffered twice by the waist-shaped groove 602 and the cavity 503, and then slides down into the conveying groove 504 between the clamping plate 8 and the powder feeding nozzle 5. The surface of the clamping plate 8 has a high degree of smoothness. The powder feeding nozzle 5 and the clamping plate 8 are made of chromium copper. The thickness of the cladding layer processed by this cladding nozzle can be controlled to 0.3mm-2mm, and the processing allowance can be controlled to within 0.1mm.

[0041] The top of the connecting plate 6 has a second screw hole 601. A waist-shaped groove 602 and a limiting groove 603 are respectively opened on one side of the connecting plate 6. The second screw hole 601 is connected to the waist-shaped groove 602. A sealing ring is bonded to the inside of the limiting groove 603 and fits against the side of the powder feeding nozzle 5. The sealing ring ensures the powder path is sealed. The inside of the second screw hole 601 is threaded with a powder feeding interface 9 for pneumatic powder feeding. The waist-shaped groove 602 and the axis of the powder feeding interface 9 form a 90-degree angle to reduce airflow impact and achieve initial powder homogenization. The waist-shaped groove 602 can initially reduce the impact force of the powder-carrying gas and make the powder initially dispersed and homogenized in the waist-shaped groove 602. The secondary homogenization treatment makes the powder distribution more uniform. In order to achieve better powder aggregation, a secondary air pressure buffer design is adopted to reduce the amount of splashed powder caused by airflow impact and make it have better aggregation.

[0042] The top of the limiting frame 4 is provided with an external thread 401 that is threaded to the inner side of the adjusting ring 2. A first screw hole 403 is provided on one side of the limiting frame 4. The inner side of the first screw hole 403 is fixedly connected to one side of the powder feeding nozzle 5 by bolts. Several powder conveying holes 502 communicating with the waist-shaped groove 602 are provided on both sides of the powder feeding nozzle 5. The diameter of the powder conveying holes 502 is 1-1.5mm. A cavity 503 and a conveying groove 504 communicating with the powder conveying holes 502 are respectively provided inside the powder feeding nozzle 5. The lower edge of 502 is lower than the lower edge of the waist-shaped groove 602 to avoid powder residue in the waist-shaped groove 602; the air-carrying powder conveyed into the waist-shaped groove 602 enters the cavity 503 on the powder feeding nozzle 5 through the powder conveying hole 502 for secondary homogenization and to reduce the impact force of the powder-carrying gas. The powder conveying hole 502, cavity 503, and conveying groove 504 cooperate with the clamping plate 8 and adopt a secondary air pressure buffer design to reduce the amount of splashed powder caused by airflow impact and make it have better aggregation.

[0043] The powder feeding nozzle 5 has water supply holes 501 perpendicularly distributed to the powder supply hole 502 on its surface. A second water pipe interface 11 is connected to the inner side of the water supply hole 501. Several first connecting grooves 505 are horizontally distributed on the inner side of the powder feeding nozzle 5. The inner side of the first connecting grooves 505 is connected to a vertically distributed second connecting groove 506. Both the first connecting grooves 505 and the second connecting grooves 506 are connected to the water supply hole 501. The water supply hole 501, the first connecting grooves 505 and the second connecting grooves 506 are used to ensure that the powder feeding nozzle 5 does not experience malfunctions such as powder blockage due to excessive temperature during long-term use. The water supply hole 501, the first connecting grooves 505 and the second connecting grooves 506 form a ring water circuit, which reduces the pressure drop of the cooling water and ensures the cooling effect.

[0044] The top of the light-blocking plate 7 has several third screw holes 701. The inner side of the third screw holes 701 is connected to the first water pipe interface 10. The inner side of the light-blocking plate 7 has a third connecting groove 702 that communicates with the third screw holes 701. The inner side of the light-blocking plate 7 has a third connecting groove 702 with dual-path cold water circulation. The light-blocking plate 7 can not only carry away the heat generated by the reflected light, preventing the pipes and equipment above from being damaged by the reflected light, but also provide indirect water cooling for the powder feeding nozzle 5 to ensure the constant temperature of the entire cladding nozzle and improve the long-term working stability of the cladding nozzle. The light-blocking plate 7 has a first plug on one side of the third connecting groove 702 sealed to one side, and the powder feeding nozzle 5 has a second plug on one side of the first connecting groove 505 and the second connecting groove 506 sealed to one side. The transverse third connecting groove 702 connects the third screw holes 701 to form a cold water circuit.

[0045] Working principle: By loosening and tightening, the relative position of the adjusting ring 2 is adjusted within the connecting frame 3, thereby adjusting the relative position of the powder feeding nozzle 5 and the light spot. Specifically, one adjusting screw 12 is loosened, and the diagonal adjusting screws 12 are tightened, causing the adjusting ring 2 to move relatively horizontally within the connecting frame 3, thus achieving the purpose of adjusting the relative position of the powder feeding nozzle 5 and the light spot.

[0046] The powder enters the waist-shaped groove 602 through the pneumatic powder feeding interface 9. The waist-shaped groove 602 forms a 90-degree angle with the axis of the powder feeding interface 9 to reduce airflow impact and achieve initial powder homogenization. After initial homogenization, the powder enters the cavity 503 on the powder feeding nozzle 5 through the powder feeding hole 502 for secondary homogenization and further reduces the impact force of the powder-carrying gas. After secondary homogenization, the powder slides down the conveying groove 504 between the clamping plate 8 and the powder feeding nozzle 5, forming two powder output streams with corresponding widths on the left and right. The secondary air pressure buffer design performs two homogenizations and impact reduction buffering on the powder in the waist-shaped groove 602 and the cavity 503, reducing the amount of splashed powder caused by airflow impact, making it more convergent. This allows the thickness of the cladding layer to be controlled to 0.3mm-2mm, and the processing allowance to be controlled to within 0.1mm. The powder output is more uniform, and structural parts that affect powder convergence are easier to process to the ideal effect, thereby improving the utilization rate of powder and the uniformity and smoothness of the cladding surface.

[0047] The powder feeding nozzle 5 has a water inlet 501 on its surface and a first connecting groove 505 and a second connecting groove 506 on its inner side, forming an annular water channel. Cooling water enters the water inlet 501 through the second water pipe interface 11 and then flows through the first connecting groove 505 and the second connecting groove 506 to cool the powder feeding nozzle 5 and prevent powder blockage due to excessive temperature. The light blocking plate 7 has a third connecting groove 702 on its inner side, which is connected to the cooling water through the first water pipe interface 10 to form a dual-path cold water circulation. The light blocking plate 7 can not only remove the heat generated by the reflected light and prevent the upper pipes and equipment from being damaged by the reflected light, but also provide indirect water cooling for the powder feeding nozzle 5 to ensure that the temperature of the entire cladding nozzle is constant.

[0048] A sealing ring is bonded to the inner side of the limiting groove 603 and fits against one side of the powder feeding nozzle 5 to ensure the powder path is sealed and prevent powder leakage. A second plug located on one side of the first connecting groove 505 and the second connecting groove 506 is sealed to one side of the light blocking plate 7 and a first plug located on one side of the third connecting groove 702 to ensure the cooling water path is sealed and prevent cooling water leakage.

[0049] In summary, by loosening and tightening the relative position of the adjusting ring 2, the adjustment can be completed simply by loosening and tightening the diagonal screws 12. The adjusting ring 2 moves relatively horizontally within the connecting frame 3. The operation is simple and quick, saving time and labor costs. It can achieve precise control of the relative position of the powder feeding nozzle 5 and the light spot, improving processing accuracy and product quality.

[0050] The powder is introduced into the waist-shaped groove 602 through the pneumatic powder feeding interface 9. Since the waist-shaped groove 602 and the axis of the powder feeding interface 9 are at a 90-degree angle, the direct impact of the airflow on the powder can be effectively reduced, so that the powder can be initially dispersed and homogenized after entering the waist-shaped groove 602. The powder after initial homogenization enters the cavity 503 on the powder feeding nozzle 5 through the powder feeding hole 502. In the cavity 503, the powder is further homogenized, and the impact force of the powder-carrying gas is further reduced. The secondary homogenization and impact reduction design helps to ensure the uniform distribution of powder in the powder feeding nozzle 5 and reduce powder splashing caused by airflow impact. The powder after secondary homogenization slides down in the conveying groove 504 between the clamping plate 8 and the powder feeding nozzle 5. Because the powder forms two powder output streams on the left and right sides during the sliding process under the action of the conveying groove 504, it helps to ensure that the powder can be accurately delivered to the target position and form a stable powder stream 3. During the powder feeding process, a secondary air pressure buffer is adopted. In the waist-shaped groove 602 and the cavity 503, the powder is buffered by the air pressure, which helps to reduce the amount of splashed powder caused by airflow impact and improve the powder cohesion, making the powder feeding process more stable and reliable, improving the powder utilization rate and processing quality 4. The powder output is uniform and has good cohesion, which improves the uniformity and smoothness of the cladding surface, and enhances the appearance quality and performance of the product.

[0051] Cooling water enters the water inlet 5011 on the surface of the powder feeding nozzle 5 through the second water pipe interface 11. The cooling water then flows through the first connecting groove 505 and the second connecting groove 506 on the inner side of the powder feeding nozzle 5 to form an annular water path 2. The design of the annular water path ensures that the cooling water can flow evenly through all parts of the powder feeding nozzle 5, thereby effectively cooling the powder feeding nozzle 5 and preventing powder blockage due to excessive temperature 3.

[0052] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A pneumatic powder feeding dual-beam wideband coaxial cladding nozzle, comprising a connecting rod (1), characterized in that: The bottom of the connecting rod (1) is fixed with a connecting frame (3) by bolts. An adjusting ring (2) is connected to the inner side of the connecting frame (3). A limit frame (4) is connected to one side of the adjusting ring (2). The connecting frame (3) has four grommets (12) threaded on its outer side, which are used to adjust the position of the adjusting ring (2); The bottom of the limiting frame (4) is connected to a powder feeding nozzle (5), and both sides of the powder feeding nozzle (5) are fixed with connecting plates (6) by bolts. A light blocking plate (7) is fixed to the outside of the powder feeding nozzle (5) by bolts. The powder feeding nozzle (5) has clamps (8) fixedly connected to both sides of its bottom by bolts; The top of the connecting plate (6) is provided with a second screw hole (601), and the side of the connecting plate (6) is provided with a waist-shaped groove (602) and a limiting groove (603). The inner side of the second screw hole (601) is threaded with a powder feeding interface (9) for pneumatic powder feeding.

2. The pneumatic powder feeding dual-beam wideband coaxial cladding nozzle according to claim 1, characterized in that: The top of the connecting rod (1) is connected to a laser optical lens, and the outer side of the adjusting ring (2) has four flat surfaces. One end of the caliper screw (12) abuts against one side of the flat surface.

3. The pneumatic powder feeding dual-beam wideband coaxial cladding nozzle according to claim 1, characterized in that: The second screw hole (601) is connected to the waist-shaped groove (602), and a sealing ring that fits against one side of the powder feeding nozzle (5) is bonded to the inner side of the limiting groove (603).

4. The pneumatic powder feeding dual-beam wideband coaxial cladding nozzle according to claim 3, characterized in that: The top of the limiting frame (4) is provided with an external thread (401) that is threaded to the inner side of the adjusting ring (2). The limiting frame (4) is provided with a first screw hole (403) on one side. The inner side of the first screw hole (403) is fixedly connected to the side of the powder feeding nozzle (5) by a bolt.

5. The pneumatic powder feeding dual-beam wideband coaxial cladding nozzle according to claim 4, characterized in that: The powder feeding nozzle (5) has several powder feeding holes (502) on both sides that communicate with the waist-shaped groove (602). The powder feeding nozzle (5) has a cavity (503) and a conveying groove (504) that communicate with the powder feeding holes (502) on its inner side. The lower edge of the powder feeding hole (502) is lower than the lower edge of the waist-shaped groove (602).

6. The pneumatic powder feeding dual-beam wideband coaxial cladding nozzle according to claim 5, characterized in that: The powder feeding nozzle (5) has water supply holes (501) that are perpendicular to the powder supply hole (502) on its surface. A second water pipe interface (11) is connected to the inside of the water supply hole (501). A plurality of first connecting grooves (505) are horizontally distributed inside the powder feeding nozzle (5). A vertically distributed second connecting groove (506) is connected to the inside of the first connecting groove (505). Both the first connecting groove (505) and the second connecting groove (506) are connected to the water supply hole (501).

7. The pneumatic powder feeding dual-beam wideband coaxial cladding nozzle according to claim 6, characterized in that: The top of the light-blocking plate (7) has several third screw holes (701), the inner side of the third screw holes (701) is connected to a first water pipe interface (10), and the inner side of the light-blocking plate (7) has a third connecting groove (702) that communicates with the third screw holes (701).

8. The pneumatic powder feeding dual-beam wideband coaxial cladding nozzle according to claim 7, characterized in that: The light-blocking plate (7) is sealed with a first plug located on one side of the third connecting groove (702), and the powder feeding nozzle (5) is sealed with a second plug located on one side of the first connecting groove (505) and the second connecting groove (506).

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