Powder feeder with high reliability

Abstract

The utility model relates to the field of powder feeders, and particularly discloses a high-reliability powder feeder which comprises a gas conveying pipe, a material conveying pipe fixedly arranged on the periphery of the gas conveying pipe and communicated with the gas conveying pipe, a rotating shaft rotationally arranged in the material conveying pipe, spiral blades fixedly arranged on the periphery of the rotating shaft, and power fan blades fixedly arranged at the lower end of the rotating shaft and located in the gas conveying pipe. Air flow in the air conveying pipe can drive the power fan blades to rotate. Air flow enters the air conveying pipe through one end of the air conveying pipe, so that the power fan blades are driven to rotate, the spiral blades are made to rotate, welding material powder in the storage barrel is conveyed into the air conveying pipe, the welding material powder falls on the power fan blades, and caked powder carried in the welding material powder is crushed through the rotating power fan blades; and then the powder is output to the other end of the gas conveying pipe through gas flow, so that the situation that the caked powder blocks the powder conveying pipeline is reduced, the rotating speed of the spiral blade can be adjusted by adjusting the speed of the gas flow entering the gas conveying pipe, the supply amount of the welding material powder is synchronously adjusted, and the powder conveying amount adjusting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of powder feeders, specifically a highly reliable powder feeder. Background Technology

[0002] The powder feeder is a new type of dilute phase continuous micro-positive pressure pneumatic conveying equipment. In the laser welding process, the powder feeder needs to deliver welding powder to the laser welding nozzle. Traditional powder feeders mainly convey powder by gas. Since the powder is prone to absorbing water and clumping during storage, the power of gas alone is insufficient to break up the clumped powder, which can easily clog the powder feeding pipe.

[0003] Therefore, a highly reliable powder feeder needs to be designed to alleviate the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a highly reliable powder feeder to overcome the aforementioned defects in the prior art.

[0005] According to the present invention, a highly reliable powder feeder includes an air conveying pipe, a material conveying pipe connected to the air conveying pipe is fixedly disposed on the outer periphery of the air conveying pipe, a rotating shaft is rotatably disposed inside the material conveying pipe, a spiral blade is fixedly disposed on the outer periphery of the rotating shaft, and a power fan blade located inside the air conveying pipe is fixed at the lower end of the rotating shaft, and the airflow inside the air conveying pipe can drive the power fan blade to rotate.

[0006] With the above technical solution, welding powder is stored in a storage cylinder. Airflow enters the cylinder through one end of the air delivery pipe, which drives the power fan blade to rotate, thereby causing the spiral blade to rotate. This transports the welding powder in the storage cylinder into the air delivery pipe. The welding powder falls onto the power fan blade, and the rotating power fan blade breaks up any clumps of powder it carries. The powder is then output to the other end of the air delivery pipe through the airflow, thus reducing the occurrence of clumps of powder clogging the powder delivery pipe.

[0007] Preferably, a funnel-shaped storage cylinder is fixedly provided at the upper end of the conveying pipe and communicates with the conveying pipe. A fixing frame is fixed on the inner wall of the storage cylinder, and the upper end of the rotating shaft extends upward into the storage cylinder and is rotatably connected to the fixing frame.

[0008] Through the above technical solutions, the fixing frame can increase the stability of the rotating shaft and ensure the stability of the spiral blade conveying powder.

[0009] Preferably, the inner wall of the gas supply pipe is fixed with a guide fluid located on one side of the power fan blade and arranged along the length direction of the gas supply pipe. A guide cavity is formed in the guide fluid and extends through the guide fluid along the length direction of the gas supply pipe. The end of the guide cavity near the power fan blade is aligned with the power fan blade.

[0010] Through the above technical solution, the guide cavity can concentrate the airflow entering the gas pipeline and blow it toward the power fan blades, thereby improving the effective utilization rate of the airflow and ensuring the power required for the rotation of the power fan blades.

[0011] Preferably, the flow guide cavity is an inverted "V" shape with a high middle and low ends. The flow guide cavity is composed of a central arc portion and two straight portions tangent to it on both sides. The extension line of the straight portion of the flow guide cavity near the power fan blade is inclined to the upper side of the power fan blade.

[0012] The above technical solution increases the contact area between the airflow and the power fan blades, thereby further improving the effective utilization rate of the airflow by the power fan blades.

[0013] Preferably, the end of the guide fluid away from the power fan blade has a guide port that communicates with the guide cavity, and the diameter of the guide port gradually decreases from the end away from the power fan blade to the end closer to the power fan blade.

[0014] The above technical solution helps to gather and guide the airflow entering the gas pipeline, reducing the loss of air kinetic energy.

[0015] Preferably, the guide fluid has a heating chamber located on one side of the guide cavity, and a heating rod is fixed inside the heating chamber.

[0016] Through the above technical solution, the heating rod generates heat when energized, which heats the airflow passing through the guide cavity, thereby drying the welding powder and further reducing the occurrence of welding powder agglomeration.

[0017] Preferably, one end of the gas delivery pipe contracts towards its axis to form a connection port, the power fan blade is located between the connection port and the guide fluid, and the other end of the gas delivery pipe is connected to the gas delivery system.

[0018] Through the above technical solution, the gas supply system supplies gas into the gas supply pipe, and the gas flow carries the welding material powder and is then delivered to the laser welding nozzle through the connection port.

[0019] The beneficial effects of this utility model are as follows: the welding powder is stored in the storage cylinder, and the airflow enters the cylinder through one end of the air delivery pipe, thereby driving the power fan blade to rotate, which in turn causes the spiral blade to rotate, thus conveying the welding powder in the storage cylinder into the air delivery pipe. The welding powder falls onto the power fan blade, and the rotating power fan blade breaks up any clumps of powder it carries. Then, the powder is output to the other end of the air delivery pipe through the airflow, thereby reducing the occurrence of clumps of powder clogging the powder delivery pipe. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a utility model Figure 1 A sectional view;

[0022] Figure 3 This is a utility model Figure 2 Enlarged view of point B in the middle;

[0023] Figure 4 This is a schematic diagram of the airflow direction in this utility model.

[0024] In the picture:

[0025] 10. Gas delivery pipe; 11. Power fan blade; 12. Guide fluid; 13. Guide port; 14. Guide cavity; 15. Heating rod; 16. Heating cavity; 17. Connection port; 20. Material delivery pipe; 21. Storage cylinder; 22. Fixing frame; 23. Rotating shaft; 24. Spiral blade. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are merely simplified descriptions for the convenience of describing this utility model, and are not intended to 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, they should not be construed as limitations on this utility model.

[0027] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. As used herein, the terms up / down and left / right are not limited to their strict geometric definitions, but rather include tolerances for reasonable and inconsistent machining or human errors. The specific features of this highly reliable powder feeder are described in detail below:

[0028] One embodiment of this utility model:

[0029] Reference Figures 1-4This utility model provides a highly reliable powder feeder, including an air conveying pipe 10, a material conveying pipe 20 connected to the air conveying pipe 10 and fixed on the outer periphery of the air conveying pipe 10, a rotating shaft 23 rotatably disposed inside the material conveying pipe 20, a spiral blade 24 fixed on the outer periphery of the rotating shaft 23, a power fan blade 11 located inside the air conveying pipe 10 and fixed at the lower end of the rotating shaft 23, the airflow in the air conveying pipe 10 can drive the power fan blade 11 to rotate, a funnel-shaped storage cylinder 21 connected to the material conveying pipe 20 and fixed at the upper end of the material conveying pipe 20, a fixing frame 22 fixed on the inner wall of the storage cylinder 21, and the upper end of the rotating shaft 23 extending upward into the storage cylinder 21 and rotatably connected to the fixing frame 22.

[0030] Reference Figure 2 , Figure 3 A guide fluid 12 is fixedly installed on the inner wall of the air supply pipe 10, located on one side of the power fan blade 11 and arranged along the length of the air supply pipe 10. A guide cavity 14 is formed within the guide fluid 12, extending along the length of the air supply pipe 10. The end of the guide cavity 14 closest to the power fan blade 11 is aligned with the power fan blade 11. The guide cavity 14 is an inverted "V" shape, higher in the middle and lower at both ends. The guide cavity 14 consists of a central arc portion and two straight portions tangent to it on both sides, thereby reducing the loss of kinetic energy of the airflow during its passage through the guide cavity 14. The extension line of the straight section near the power fan blade 11 is inclined to the upper side of the power fan blade 11. The end of the guide fluid 12 away from the power fan blade 11 is provided with a guide port 13 that communicates with the guide cavity 14. The diameter of the guide port 13 gradually decreases from the end away from the power fan blade 11 to the end near the power fan blade 11. The guide fluid 12 is provided with a heating cavity 16 located on one side of the guide cavity 14. A heating rod 15 is fixed in the heating cavity 16. The two ends of the heating rod 15 are connected to the power supply through wires. When the heating rod 15 is powered on, it will generate heat to heat the guide cavity 14.

[0031] Reference Figure 1 One end of the gas supply pipe 10 contracts towards its axis to form a connection port 17. One end of the connection port 17 is connected to the laser welding nozzle through a conduit. The power fan blade 11 is located between the connection port 17 and the guide fluid 12. The other end of the gas supply pipe 10 is connected to the gas supply system, which can be an air pump.

[0032] The welding powder is stored in the storage cylinder 21. The gas supply system inputs gas into the gas supply pipe 10. The airflow is guided by the guide port 13 and blown into the power fan blade 11 through the guide cavity 14, thereby causing the power fan blade 11 to rotate, which in turn drives the rotating shaft 23 to rotate, which in turn causes the spiral blade 24 to rotate. The welding powder in the storage cylinder 21 is then conveyed downward under the rotation of the spiral blade 24 and falls from the lower end of the supply pipe 20 into the gas supply pipe 10. When the welding powder falls onto the power fan blade 11, the rotation of the power fan blade 11 causes the agglomerates in the welding powder to be crushed.

[0033] During this process, the heating rod 15 is energized to generate heat, thereby heating the airflow passing through the guide cavity 14. The heated airflow is then blown onto the welding powder, thereby drying the welding powder. The welding powder is then transported to the nozzle of the laser welding machine by the airflow through the connection port 17 and the conduit, thereby reducing the occurrence of welding powder agglomeration and clogging of the pipeline and increasing the reliability of welding powder delivery.

[0034] If it is necessary to adjust the output of welding material powder, the amount of air supplied by the air supply system into the air supply pipe 10 is adjusted, thereby adjusting the rotation speed of the power fan blade 11, and then adjusting the rotation speed of the spiral blade 24, thereby adjusting the amount of welding material dust in the input air supply pipe 10.

[0035] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of this utility model. All such modifications fall within the protection scope of this utility model. The protection scheme of this utility model is defined by the appended claims.

Claims

1. A powder feeder with high reliability, comprising a gas supply tube (10), characterized in that: The gas conveying pipe (10) is provided with a conveying pipe (20) communicated with the gas conveying pipe (10) on the outer periphery, the conveying pipe (20) is provided with a rotating shaft (23) rotatingly arranged in the conveying pipe (20), the rotating shaft (23) is provided with a spiral blade (24) on the outer periphery, the rotating shaft (23) is fixedly provided with a power fan blade (11) in the gas conveying pipe (10), and the airflow in the gas conveying pipe (10) can drive the power fan blade (11) to rotate.

2. The powder feeder according to claim 1, wherein: The conveying pipe (20) is provided with a funnel-shaped storage cylinder (21) communicated with the conveying pipe (20) on the upper end, the storage cylinder (21) is fixedly provided with a fixing frame (22) on the inner wall, and the rotating shaft (23) is extended upward to the inside of the storage cylinder (21) and is rotationally connected in the fixing frame (22).

3. The powder feeder of claim 1, wherein: The gas conveying pipe (10) is provided with a flow guide body (12) arranged along the length direction of the gas conveying pipe (10) on the inner wall on one side of the power fan blade (11), the flow guide body (12) is provided with a flow guide cavity (14) penetrating through the flow guide body (12) along the length direction of the gas conveying pipe (10), and one end of the flow guide cavity (14) close to the power fan blade (11) is aligned with the power fan blade (11).

4. The powder feeder according to claim 3, wherein: The flow guide cavity (14) is in an inverted "V" shape with the middle part being high and the two ends being low, the flow guide cavity (14) is composed of a circular arc part in the middle and straight line parts tangent to the circular arc part on the two sides, and the extension line of the straight line part close to the power fan blade (11) in the flow guide cavity (14) is inclined to the upper side of the power fan blade (11).

5. The powder feeder according to claim 4, wherein: The flow guide body (12) is provided with a flow guide opening (13) communicated with the flow guide cavity (14) on the end away from the power fan blade (11), and the diameter of the flow guide opening (13) gradually decreases from the end away from the power fan blade (11) to the end close to the power fan blade (11).

6. The powder feeder of claim 5, wherein: The flow guide body (12) is provided with a heating cavity (16) on one side of the flow guide cavity (14), and the heating cavity (16) is fixedly provided with a heating rod (15).

7. The powder feeder of claim 3, wherein: One end of the gas conveying pipe (10) is contracted to the axis direction to form a connecting opening (17), the power fan blade (11) is located between the connecting opening (17) and the flow guide body (12), and the other end of the gas conveying pipe (10) is connected with a gas conveying system.

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