A large flame gun device

Abstract

The present invention provides a large flame gun device, including a water cooling jacket and a small flame gun, wherein at least two small flame guns are arranged in the water cooling jacket, and the small flame guns are distributed in a circle, and the characteristic is that an observation tube for observing the flame of the small flame gun is arranged at the center of the circle surrounded by the small flame guns. This scheme assembles the small flame guns into an integrated device, effectively improves the processing efficiency of materials, facilitates batch production of materials, can effectively increase the time that materials stay in high temperature areas, facilitates the full processing of materials, and can observe the size of the flame, whether it is extinguished, and the processing of materials in real time. Multiple small flame guns are integrated into one device, which is convenient for increasing the local temperature of the flame gun, further improving the processing effect and efficiency of the material, and convenient for the maintenance of a single small flame gun, avoiding long-term suspension of production during the processing process.

Description

Technical Field

[0001] The invention relates to burner technology, in particular to a large flame gun device. Background Art

[0002] With the development and progress of science and technology, the demand for materials in various fields has gradually increased. The application field of nanomaterial metal powder is becoming more and more extensive, the production requirements are becoming higher and higher, and the demand is also increasing. It is more widely used in 3D printing. In the production process, the temperature of the molten metal is several thousand degrees when it is atomized by plasma, but the atomization efficiency and effect are not very ideal.

[0003] Patent No. CN206632370U discloses a tower-type plasma generator for metal atomization, including a guide tube, a guide tube assembly, at least 3 groups of plasma gun assemblies and a spray plate bracket; the plasma gun assembly is evenly distributed on the spray plate bracket in a circular manner, and the plasma ejected from the assembly converges at the center of the lower end of the guide tube to form a plasma convergence focus area; the guide tube is installed on the spray plate bracket through the guide tube assembly and passes through the center of the spray plate bracket to transport the metal molten in the smelting furnace or the metal wire to the plasma convergence focus area for plasma atomization. The tower-type plasma generator for metal atomization has a simple structure and low manufacturing cost. The device has high plasma atomization efficiency and good uniformity of plasma atomized powder. However, the device has the following disadvantages during use: 1. The overall combustion efficiency of the small flame gun is low and cannot meet the needs of large-scale material processing; 2. In the process of increasing the material processing capacity of the small flame gun, the discharge effect is biased and the material stays in the flame for a short time; 3. In the process of discharging materials, the flame size, whether it is extinguished, and the material processing effect cannot be observed in time; 4. The cooling effect of the small flame gun alone is not good. In order to increase the overall processing capacity of the flame gun and improve production efficiency, the small flame gun is modified to allow the material to stay in the flame for a long enough time. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a large flame gun device with a long service life, which is convenient for batch production of materials, saves energy, improves the material processing effect, facilitates observation of the processing status, and has a long service life.

[0005] The technical solution of the present invention is: a large flame gun device, including a water cooling jacket and a small flame gun, at least two small flame guns are arranged in the water cooling jacket, the small flame guns are distributed in a circle, and an observation tube for observing the flame of the small flame gun is arranged at the center of the circle surrounded by the small flame guns.

[0006] The advantages of this solution are: it can produce and process metal powder in large quantities, and at the same time can effectively improve the processing efficiency and processing quality. During the processing, the combustion condition of the flame gun can be observed and checked, and the flame gun can be adjusted or opened and closed to reduce the possibility of insufficient powder processing. The material and the flame gun are set in the same direction to facilitate full contact between the material and the high-temperature area, thereby increasing the processing time of the material. At the same time, a single small flame gun can be inspected to check the circulation of the material and the combustion condition of the flame, thereby avoiding the need to suspend all production during the inspection and maintenance process, and effectively improving the processing efficiency.

[0007] Furthermore, the small flame gun comprises a feed pipe and a gas pipe, a gas pipe is arranged between the feed pipe and the water cooling jacket, an auxiliary fuel gas pipe is arranged between the feed pipe and the gas pipe, and a gun nozzle is arranged at the front end of the small flame gun.

[0008] When in use, the material enters from the feed pipe, is fully mixed with the fuel gas and the combustion-supporting gas, and is ignited and fully burned at the gun nozzle. Preferably, an electronic ignition device is provided at the gun nozzle to ignite the small flame gun, so as to facilitate full processing of the material.

[0009] Furthermore, a spare pipeline is provided between the gas pipeline and the water cooling jacket. When the gas pipeline or the combustion-supporting gas pipeline is blocked or the airflow is not smooth, the spare pipeline can be activated, and gas or combustion-supporting gas can be introduced into the spare pipeline, so that the flame gun can continue to process the material, thereby reducing the long-term suspension for maintenance during the processing. The small flame gun can be repaired after all the materials are processed, which effectively improves the processing efficiency and shortens the processing time. When sufficient combustion-supporting gas is needed, the combustion-supporting gas can be introduced into the spare pipeline and the combustion-supporting pipeline at the same time, which is convenient for improving the full combustion of the gas, and at the same time can play a cooling effect on the small flame gun, reducing the influence of high temperature on the small flame gun.

[0010] Furthermore, the water cooling jacket is provided with a mounting flange. When in use, the large flame gun is mounted on the furnace body through the mounting flange, and a sealing gasket can be added between the mounting flange and the furnace body to improve the vacuum sealing effect of the furnace body and facilitate the flow of materials in the feed pipe.

[0011] Furthermore, the water cooling jacket is provided with a water inlet and a water outlet.

[0012] Preferably, cooling water flows in the water cooling jacket. The cooling water enters from the water inlet, passes through the high temperature area, and flows out from the water outlet. This process has a cooling effect on the high temperature area, which is convenient for protecting each small flame gun. The cooling water after passing through the high temperature area has a certain heating effect on the material during the outflow process, which is convenient for fully processing the material.

[0013] Furthermore, a transparent sealing baffle made of high temperature resistant material is provided at one end of the observation tube away from the gun nozzle, which is convenient for improving the vacuum sealing effect of the furnace body and avoiding the influence of high temperature on the transparent sealing baffle, making it convenient to observe the processing of materials and the burning of flames and make timely adjustments.

[0014] Furthermore, the caliber of the observation tube is 1-50 cm.

[0015] Preferably, the diameter of the observation tube is 5-15 cm.

[0016] Preferably, the diameter of the observation tube is 8 cm. At the same time, the inside of the observation tube is a non-reflective surface, which is convenient for reducing the influence of reflection on the observation effect, and is convenient for judging the flame of each small flame gun and the flow effect of the material, as well as the processing situation.

[0017] Furthermore, metal powder is introduced into the feed pipe, and the flow rate of the metal powder is 3-500g / s.

[0018] Preferably, the flow rate of the metal powder is 5-200 g / s.

[0019] More preferably, the flow rate of the metal powder is 12 g / s. When the amount of metal powder introduced into the material is too large, it is not conducive to fully processing the material. When the amount of material introduced into the material is too small, it is not conducive to improving the processing efficiency and saving energy.

[0020] Furthermore, the volume ratio of the gas in the gas pipeline to the gas-supporting gas in the gas-supporting gas pipeline is 1:10-10:1.

[0021] Preferably, the volume ratio of the fuel gas to the combustion-supporting gas is 1:8-5:1.

[0022] More preferably, the volume ratio of the gas to the combustion-supporting gas is 1: 3. When the gas ratio is too high, it is not conducive to the full combustion of the gas and energy saving. When the gas ratio is too low, it is not conducive to the increase of the flame temperature and the full combustion of the material.

[0023] Furthermore, the gas pipeline, the fuel gas pipeline and the spare pipeline are respectively provided with a gas inlet pipe, a fuel gas inlet pipe and a spare gas inlet pipe, and the gas inlet pipe, the fuel gas inlet pipe and the spare gas inlet pipe are all provided with valves.

[0024] The present invention has the following characteristics:

[0025] The present invention integrates a small flame gun into an integrated assembly device, which effectively improves the processing efficiency of materials, is convenient for batch production of materials, can effectively increase the time that materials stay in a high-temperature area, is convenient for improving the full processing of materials, and can observe the size of the flame, whether it is extinguished, and the processing status of the material in real time. Multiple small flame guns are integrated into one device, which is convenient for increasing the local temperature of the flame gun, further improving the processing effect and efficiency of the material, and is convenient for the maintenance of a single small flame gun, avoiding long-term suspension of production during the processing process.

[0026] The detailed structure of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 - is a schematic diagram of the structure of the present invention;

[0028] Figure 2 -for Figure 1 Middle BB cross section;

[0029] Figure 3 -for Figure 1 A top view of

[0030] 1-observation tube, 2-feeding pipe, 3-fuel gas pipe, 4-gas pipe, 5-spare pipe, 6-water inlet, 7-mounting flange, 8-water cooling jacket, 9-gun nozzle, 10-mounting plate, 11-water outlet, 12-triangular flange, 13-jet hole. DETAILED DESCRIPTION

[0031] As shown in the accompanying drawings: a large flame gun device includes a water cooling jacket 8 and a small flame gun. The water cooling jacket 8 is cylindrical. Six small flame guns are arranged in the water cooling jacket 8. The small flame guns are distributed in a circle and are coaxially arranged with the water cooling jacket 8. An observation tube 1 for observing the flame of the small flame gun is arranged at the center of the circle surrounded by the small flame guns. Preferably, the caliber of the observation tube 1 is 9 cm; preferably, the caliber of the observation tube 1 can also be 5 cm, 8 cm, 10 cm, 12 cm or 15 cm; at the same time, the inside of the observation tube 1 is a non-reflective surface, which is convenient for reducing the influence of reflection on the observation effect, and is convenient for judging the flame of each small flame gun and the flow effect of the material, as well as the processing situation.

[0032] Metal powder is introduced into the feed pipe 2. Preferably, the flow rate of the metal powder is 12 g / s; preferably, the flow rate of the metal powder is 5 g / s, 8 g / s, 10 g / s, 15 g / s or 20 g / s. When the amount of metal powder introduced is too large, it is not conducive to sufficient processing of the material. When the amount of material introduced is too small, it is not conducive to improving processing efficiency and saving energy.

[0033] The present invention can produce and process metal powders in large quantities, and can effectively improve processing efficiency and processing quality. During the processing, the combustion condition of the flame gun can be observed and checked, and the flame gun can be adjusted or opened and closed to reduce the possibility of insufficient powder processing. The material and the flame gun's spraying direction are set in the same direction, which is convenient for the material to fully contact with the high-temperature area and increase the processing time of the material. At the same time, a single small flame gun can be inspected to check the circulation condition of the material and the combustion condition of the flame, thereby avoiding the need to suspend all production during the inspection and maintenance process, and effectively improving the processing efficiency.

[0034] The small flame gun comprises a feed pipe 2 and a gas pipe 4. The gas pipe 4 is arranged between the feed pipe 2 and the water cooling jacket 8. An auxiliary fuel gas pipe 3 is arranged between the feed pipe 2 and the gas pipe 4. A gun nozzle 9 is arranged at the front end of the small flame gun.

[0035] During use, the material enters from the feed pipe 2, is fully mixed with the fuel gas and the combustion-supporting gas, and is ignited and fully burned at the gun nozzle 9. Preferably, an electronic ignition device is provided at the gun nozzle 9 to ignite the small flame gun, so as to facilitate full processing of the material.

[0036] Gas is introduced into the gas pipeline 4, and supporting combustion gas is introduced into the supporting combustion gas pipeline 3. The gas in the gas pipeline 4 is at least one of high-temperature gases such as acetylene, natural gas, methane, propane, ethylene and ethane, and the supporting combustion gas is one or more combustible gases among combustion products such as oxygen, ozone, chlorine, fluorine, etc.; preferably, the volume ratio of the gas to the supporting combustion gas is 1:3; preferably, the volume ratio of the gas to the supporting combustion gas can also be 1:4, or 2:5, or 2:7; when the gas ratio is too high, it is not conducive to the full combustion of the gas and energy saving, and when the gas ratio is too low, it is not conducive to the increase of flame temperature and the full combustion of materials.

[0037] A spare pipeline 5 is also provided between the gas pipeline 4 and the water cooling jacket 8. When the gas pipeline 4 or the combustion-supporting gas pipeline 3 is blocked or the airflow is not smooth, the spare pipeline 5 can be activated, and gas or combustion-supporting gas can be introduced into the spare pipeline 5, so that the flame gun can continue to process the material, which reduces the long-term suspension and maintenance during the processing. The small flame gun can be repaired after all the materials are processed, which effectively improves the processing efficiency and shortens the processing time. When sufficient combustion-supporting gas is needed, the combustion-supporting gas can be introduced into the spare pipeline 5 and the combustion-supporting gas pipeline at the same time, which is convenient for improving the full combustion of the gas, and at the same time can play a cooling effect on the small flame gun, reducing the influence of high temperature on the small flame gun.

[0038] The water cooling jacket 8 is provided with a mounting flange 7. When in use, the large flame gun is mounted on the furnace body through the mounting flange 7, and a sealing gasket can be further provided between the mounting flange 7 and the furnace body to improve the vacuum sealing effect of the furnace body and facilitate the flow of materials in the feed pipe.

[0039] The water cooling jacket 8 is provided with a water inlet 6 and a water outlet 11. Preferably, cooling water flows in the water cooling jacket 8, and the cooling water enters from the water inlet 6, passes through the high temperature area, and then flows out from the water outlet 11. This process has a cooling effect on the high temperature area, which is convenient for protecting each small flame gun. The cooling water after passing through the high temperature area has a certain heating effect on the material during the outflow process, which is convenient for fully processing the material. At the same time, the flow rate of the coolant in the water cooling jacket 8 is relatively large, and all the small flame guns on the large flame gun can be cooled at the same time, so that the cooling effect of the small flame gun is better.

[0040] A transparent sealing baffle made of high temperature resistant material is provided at one end of the observation tube 1 away from the gun nozzle 9. This is convenient for improving the vacuum sealing effect of the furnace body, while avoiding the influence of high temperature on the transparent sealing baffle, making it convenient to observe the processing of materials and the burning of flames, and to make timely adjustments.

[0041] The gas pipeline 4, the fuel gas pipeline 3 and the spare pipeline 5 are respectively provided with a gas inlet pipe, a fuel gas inlet pipe and a spare gas inlet pipe. The gas inlet pipe, the fuel gas inlet pipe and the spare gas inlet pipe are all provided with valves. The valves include a gas inlet valve for adjusting the flow rate of gas, a fuel gas inlet valve for adjusting the flow rate of fuel gas and a spare inlet valve for adjusting the flow rate of spare gas, so as to facilitate the adjustment of the flow rate of each gas in the air.

[0042] In another embodiment, the gun nozzle 9 is conical and matches the conical hole in the water cooling jacket 8. The small flame gun is installed at the installation position of the small flame gun in the water cooling jacket 8, so that the small flame gun and the water cooling jacket 8 are sealed and connected, which is convenient for improving the sealing effect. At the same time, a high-temperature resistant sealant or sealing gasket can be added at the connection to further improve its sealing effect. In addition, a fixed mounting plate 10 is provided at one end of each small flame gun away from the gun nozzle 9, and the fixed mounting plate 10 is fixedly connected or integrally formed with the water cooling jacket 8 through a support column; in order to improve the connection and fixation of each small flame gun with the mounting plate 10, a triangular flange 12 is provided on the small flame gun, and the triangular flange 12 is fixedly connected to the mounting plate 10 by bolts, which is convenient for improving the structural strength of the large flame gun and improving the sealing effect.

[0043] Preferably, a mixing chamber is provided in the gun nozzle 9, and the mixing chamber is used for mixing the fuel gas and the combustion-supporting gas. A jet hole 13 is provided at the front end of the mixing chamber to spray out the mixed gas. When it is necessary to process the material, an electronic ignition device is used to ignite the mixed gas. The ignited mixed gas is fully mixed with the material to process and burn the material, thereby improving the processing effect of the material.

[0044] When in use, the small flame gun is installed on the water cooling jacket 8 at the set position and tightened, the large flame gun is installed on the furnace body through the mounting flange 7, and then the gas pipeline 4 and the fuel gas pipeline 3 on the small flame gun are connected to the gas and the fuel gas respectively. The furnace body is vacuum, and the feed pipeline 2 is connected to the material. The material flows into the furnace body through the negative pressure of the furnace body. Before the material flows, the fuel gas is introduced, and then a small amount of gas is introduced. The gas is ignited by the electronic ignition device, and the combustion conditions of the gas of each small flame gun are observed and adjusted through the observation port. When the gas combustion is light blue, the material is started to be introduced and the material is processed. During the processing, the material is in the same direction as the direction of gas spraying, so that the material can stay in the high temperature after combustion for a longer time, which is more conducive to the processing of the material, and at the same time, it is convenient for the batch production of the material, the maintenance of the equipment and the improvement of the processing efficiency.

[0045] In another embodiment, the inner diameter of the observation tube 1 is 45 mm, the outer diameter is 50 mm, the length of the water cooling jacket 8 is 550 mm, the mounting flange 7 is arranged in the middle of the water cooling jacket, the water cooling jacket 8 is made of high-temperature refractory material with a thickness of 12 mm, and the inner diameter of the water cooling jacket 8 is 520 mm; the relevant parameters of the small flame gun and the parameters of the above-mentioned workpiece can be adjusted according to the specific design of the processing, so as to improve the structural strength of the large flame gun.

[0046] The preferred embodiments of the invention are described in detail above, but it is obvious that the invention is not limited to the above embodiments. Within the technical concept of the invention, the technical solution of the invention can be subjected to a variety of equivalent modifications, and these equivalent modifications all belong to the protection scope of the invention. In addition, it should be noted that the various technical features described in the above specific embodiments can be independently combined separately, as long as they are within the technical concept of the invention.

Claims

1. A large flame gun device, comprising a water cooling jacket and a small flame gun, wherein at least two small flame guns are arranged in the water cooling jacket, and the small flame guns are distributed in a circle, characterized in that: An observation tube for observing the flame of the small flame gun is provided at the center of the circle surrounded by the small flame gun; The small flame gun comprises a feed pipe and a gas pipe, a gas pipe is arranged between the feed pipe and the water cooling jacket, an auxiliary fuel gas pipe is arranged between the feed pipe and the gas pipe, and a gun nozzle is arranged at the front end of the small flame gun; A spare pipeline is also provided between the gas pipeline and the water cooling jacket; The water cooling jacket is provided with a mounting flange outside; A transparent sealing baffle made of high temperature resistant material is arranged at one end of the observation tube away from the gun nozzle.

2. The large flame gun device according to claim 1, characterized in that: The water cooling jacket is provided with a water inlet and a water outlet.

3. The large flame gun device according to claim 1, characterized in that: The caliber of the observation tube is 1-50 cm.

4. The large flame gun device according to claim 1, characterized in that: Metal powder is introduced into the feed pipe, and the flow rate of the metal powder is 3-500g / s.

5. The large flame gun device according to claim 1, characterized in that: The volume ratio of the gas in the gas pipeline to the gas-supporting gas in the gas-supporting gas pipeline is 1:10-10:

1.

6. The large flame gun device according to claim 1, characterized in that: The gas pipeline, the fuel gas-supporting gas pipeline and the spare pipeline are respectively provided with a gas inlet pipe, a fuel gas-supporting gas inlet pipe and a spare gas inlet pipe, and valves are provided on the gas inlet pipe, the fuel gas-supporting gas inlet pipe and the spare gas inlet pipe.

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