Multi-channel powder feeding device

Abstract

The utility model relates to the technical field of plasma generator reaction, in particular to a multi-channel powder feeding device which structurally and mainly comprises an air source, a powder feeding mechanism and a plurality of powder feeding units. The powder feeding mechanism comprises a plurality of powder inlet pipes connected with the powder feeding units, a water inlet pipe, a water outlet pipe, a water cooling outer pipe, a water cooling inner pipe, a graphite mixing spray head, a plasma generator and a plasma flame. By means of the structure, a plurality of powder feeding pipes can be gathered together, various kinds of powder are mixed and then sprayed into plasma flames for high-temperature reaction, in this way, it can be avoided that one feeding system is used for each kind of powder, the whole structure is simpler, and cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of plasma generator reaction technology, and more specifically, to a multi-channel powder feeding device. Background Technology

[0002] A plasma generator is a device that produces plasma artificially. Plasma generated naturally is called natural plasma (such as the aurora borealis and lightning), while artificially generated plasma is called laboratory plasma. Laboratory plasma is produced in a plasma generator with a finite volume.

[0003] In plasma generator reaction systems, it is often necessary to feed two or more types of powder raw materials. Existing powder feeding systems use a single pipeline for feeding, and several powder feeding systems are configured when several raw materials are needed, resulting in a complex structure and high cost. Utility Model Content

[0004] The purpose of this invention is to provide a multi-channel powder feeding device to solve the problems caused by the single-pipe feeding system in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A multi-channel powder feeding device includes an air source, a powder feeding mechanism, and several powder feeding units, wherein the air source is connected to the powder feeding mechanism through the powder feeding units;

[0007] The powder feeding mechanism includes several powder inlet pipes, water inlet pipes, water outlet pipes, water-cooled outer pipes, water-cooled inner pipes, graphite mixing nozzles, plasma generators, and plasma flames connected to several powder feeding units. The water inlet pipes are connected to the water-cooled outer pipes, and the water outlet pipes are connected to the water-cooled inner pipes. The water-cooled inner pipes are disposed inside the water-cooled outer pipes and have a gap. The gaps are used to connect the water-cooled outer pipes and the water-cooled inner pipes to allow cooling water to flow.

[0008] The powder inlet pipe passes through the water-cooled inner pipe and is connected to the graphite mixing nozzle. One end of the water-cooled outer pipe is connected to the graphite mixing nozzle. The plasma generator is connected to the plasma flame and is located on one side of the graphite mixing nozzle.

[0009] Preferably, the powder feeding unit includes a regulating valve and a powder feeder. One end of the regulating valve is connected to the air source, and the other end is connected to the powder feeder. The powder feeder is connected to the powder inlet pipe.

[0010] Preferably, both the water-cooled outer tube and the water-cooled inner tube are provided with end caps at the ends away from the graphite mixing nozzle for sealing.

[0011] Preferably, the graphite mixing nozzle includes a connecting block and a nozzle body. The nozzle body is connected to one end of the water-cooled outer tube and the water-cooled inner tube through the connecting block, and the powder inlet pipe passes through the connecting block and communicates with the nozzle body.

[0012] Preferably, the nozzle body is provided with a mixing chamber, a flow chamber and an ejection chamber, and the mixing chamber is connected to the ejection chamber through the flow chamber.

[0013] Preferably, three powder feeding units and three powder feeding pipes are provided.

[0014] Preferably, the flow cavity is arranged at an angle.

[0015] Preferably, both the water-cooled outer tube and the water-cooled inner tube are cylindrical structures.

[0016] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0017] The structure provided by this utility model mainly includes an air source, a powder feeding mechanism, and several powder feeding units. The powder feeding mechanism includes several powder inlet pipes, water inlet pipes, water outlet pipes, a water-cooled outer pipe, a water-cooled inner pipe, a graphite mixing nozzle, a plasma generator, and a plasma flame, all connected to the powder feeding units. This structure allows multiple powder feeding pipes to be integrated, enabling various powders to be mixed and then sprayed into the plasma flame for high-temperature reaction. This avoids using a separate feeding system for each powder, simplifying the overall structure and reducing costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the powder feeding mechanism of this utility model;

[0021] Figure 3 This is a cross-sectional view of the powder feeding mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the graphite mixing nozzle of this utility model.

[0023] Icons: 1-Air source, 2-Regulating valve, 3-Powder feeder, 4-Powder inlet pipe, 5-Water inlet pipe, 6-Water outlet pipe, 7-Water-cooled outer pipe, 8-Water-cooled inner pipe, 9-Graphite mixing nozzle, 10-Plasma generator, 11-Plasma flame, 12-Connecting block, 13-Mixing chamber, 14-Nozzle body, 15-Flow chamber, 16-Ejection chamber. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Please refer to Figures 1-4 This utility model provides a multi-channel powder feeding device, including an air source 1, a powder feeding mechanism and several powder feeding units, wherein the air source 1 is connected to the powder feeding mechanism through the powder feeding units;

[0026] The powder feeding mechanism includes several powder inlet pipes 4, water inlet pipes 5, water outlet pipes 6, water-cooled outer pipes 7, water-cooled inner pipes 8, graphite mixing nozzles 9, plasma generators 10, and plasma flames 11, which are connected to several powder feeding units. The plasma flame 11 is generally a plasma flame generator. The water inlet pipes 5 are connected to the water-cooled outer pipes 7, and the water outlet pipes 6 are connected to the water-cooled inner pipes 8. The water-cooled inner pipes 8 are disposed inside the water-cooled outer pipes 7 and have a gap. The gap is used to connect the water-cooled outer pipes 7 and the water-cooled inner pipes 8 to allow cooling water to flow.

[0027] The powder feeding unit and the powder inlet pipe 4 are each provided in three sets. The powder feeding unit feeds the powder into the powder inlet pipe 4. The water-cooled outer pipe 7 and the water-cooled inner pipe 8 are both cylindrical structures. The water-cooled inner pipe 8 is fitted inside the water-cooled outer pipe 7. Cooling water flows inside the water-cooled outer pipe 7 and the water-cooled inner pipe 8. A gap is provided between the water-cooled inner pipe 8 and the water-cooled outer and inner pipes for the flow of cooling water.

[0028] Specifically, cold water flows into the gap between the water-cooled outer pipe 7 and the water-cooled inner pipe 8 through the inlet pipe 5, flows to the graphite mixing nozzle 9 on the right, and then flows to the left through the gap between the water-cooled inner pipe 8 and the powder inlet pipe 4, and flows out through the outlet pipe 6, thereby carrying away the heat radiated to each pipe by the plasma flame 11, ensuring the normal use of the pipes.

[0029] The powder inlet pipe 4 passes through the water-cooled inner pipe 8 and is connected to the graphite mixing nozzle 9. One end of the water-cooled outer pipe 7 is connected to the graphite mixing nozzle 9. The plasma generator 10 is connected to the plasma flame 11 and is located on one side of the graphite mixing nozzle 9.

[0030] The structure provided by this utility model mainly includes an air source 1, a powder feeding mechanism, and several powder feeding units. The powder feeding mechanism includes several powder inlet pipes 4, water inlet pipes 5, water outlet pipes 6, water-cooled outer pipes 7, water-cooled inner pipes 8, graphite mixing nozzles 9, a plasma generator 10, and a plasma flame 11, all connected to the powder feeding units. This structure allows multiple powder feeding pipes to be integrated, enabling various powders to be mixed and sprayed into the plasma flame for high-temperature reaction. This avoids using a separate feeding system for each powder, simplifying the overall structure and reducing costs.

[0031] In one exemplary embodiment of this utility model, the powder feeding unit includes a regulating valve 2 and a powder feeder 3. One end of the regulating valve 2 is connected to the air source 1, and the other end is connected to the powder feeder 3. The powder feeder 3 is connected to the powder inlet pipe 4.

[0032] In use, the gas supplied by the gas source 1 is adjusted to the appropriate pressure through the regulating valve 2, and the powder in the powder feeder 3 is sent into the powder inlet pipe 4. Then, the three powders are mixed through the graphite mixing nozzle 9 and sprayed into the plasma flame 11 for reaction.

[0033] The water-cooled outer tube 7 and the water-cooled inner tube 8 are coaxial steel pipes of different diameters, separated by an inner and outer gap channel formed by the water-cooled inner tube 88, through which water flows. Figure 3 As shown.

[0034] In addition, both the water-cooled outer tube 7 and the water-cooled inner tube 8 are provided with end caps at the ends away from the graphite mixing nozzle 9 for sealing.

[0035] In one exemplary embodiment of this utility model, the graphite mixing nozzle 9 includes a connecting block 12 and a nozzle body 14. The nozzle body 14 is connected to one end of the water-cooled outer tube 7 and the water-cooled inner tube 8 via the connecting block 12. The powder inlet pipe 4 passes through the connecting block 12 and communicates with the nozzle body 14. The nozzle body 14 is provided with a mixing chamber 13, a flow chamber 15, and an ejection chamber 16. The mixing chamber 13 is connected to the ejection chamber 16 via the flow chamber 15.

[0036] In addition, the flow chamber 15 is obliquely arranged so that different types of powders are mixed by generating a rotating airflow under air pressure and entering the nozzle cavity, thereby forming mixed powder.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-channel powder delivery device, characterized by, It includes an air source (1), a powder feeding mechanism and several powder feeding units, wherein the air source (1) is connected to the powder feeding mechanism through the powder feeding units; The powder feeding mechanism includes several powder inlet pipes (4), water inlet pipes (5), water outlet pipes (6), water-cooled outer pipes (7), water-cooled inner pipes (8), graphite mixing nozzles (9), plasma generators (10), and plasma flames (11) connected to several powder feeding units. The water inlet pipes (5) are connected to the water-cooled outer pipes (7), and the water outlet pipes (6) are connected to the water-cooled inner pipes (8). The water-cooled inner pipes (8) are located inside the water-cooled outer pipes (7) and have a gap. The gap is used to connect the water-cooled outer pipes (7) and the water-cooled inner pipes (8) to allow cooling water to flow. The powder inlet pipe (4) passes through the water-cooled inner pipe (8) and is connected to the graphite mixing nozzle (9). One end of the water-cooled outer pipe (7) is connected to the graphite mixing nozzle (9). The plasma generator (10) is connected to the plasma flame (11) and is located on one side of the graphite mixing nozzle (9).

2. A multi-channel powder delivery device according to claim 1, wherein, The powder feeding unit includes a regulating valve (2) and a powder feeder (3). One end of the regulating valve (2) is connected to the air source (1), and the other end is connected to the powder feeder (3). The powder feeder (3) is connected to the powder inlet pipe (4).

3. A multi-channel powder delivery device according to claim 1, wherein, Both the water-cooled outer tube (7) and the water-cooled inner tube (8) are provided with end caps at the ends away from the graphite mixing nozzle (9) for sealing.

4. A multi-channel powder delivery device according to claim 1, wherein, The graphite mixing nozzle (9) includes a connecting block (12) and a nozzle body (14). The nozzle body (14) is connected to one end of the water-cooled outer tube (7) and the water-cooled inner tube (8) through the connecting block (12). The powder inlet pipe (4) passes through the connecting block (12) and is connected to the nozzle body (14).

5. A multi-channel powder delivery device according to claim 4, wherein, The nozzle body (14) is provided with a mixing chamber (13), a flow chamber (15) and an ejection chamber (16), and the mixing chamber (13) is connected to the ejection chamber (16) through the flow chamber (15).

6. A multi-channel powder delivery device according to claim 2, wherein, There are three powder feeding units and three powder feeding pipes.

7. A multi-channel powder delivery device according to claim 5, wherein, The flow cavity (15) is arranged at an angle.

8. A multi-channel powder delivery device according to claim 4, wherein, Both the water-cooled outer tube (7) and the water-cooled inner tube (8) are cylindrical structures.

Images