A new type of atomizing furnace vacuum dust filter

Abstract

The utility model discloses a novel atomization furnace vacuum dust filter, including inner connecting pipe and outer connecting pipe, the inner connecting pipe is nested and is installed in the outer connecting pipe, the air inlet port of inner connecting pipe is equipped with flange air inlet connection flange, the edge fixed mounting of air inlet connection flange has sealing washer no.

Description

Technical Field

[0001] This utility model relates to the field of dust filter technology, and in particular to a novel vacuum dust filter for atomizing furnaces. Background Technology

[0002] Atomizing furnaces are specialized equipment used to produce metal powders through rapid solidification. Vacuum dust filters are structures that filter dust and other impurities from vacuum pipelines. With the development of modern industry, atomizing furnaces are increasingly widely used in metal smelting, material preparation, and other fields. However, atomizing furnaces generate a large amount of dust and exhaust gas during operation. This dust and exhaust gas not only pollute the environment but also affect the operating efficiency and product quality of the atomizing furnace. Impurities exist in the vacuum pipeline, and dust particles are also generated during production. Over time, and given the uneven particle size, powder accumulation occurs, widening the particle size distribution of the final collected powder and reducing product performance. If the accumulated powder is not treated, it may enter the vacuum pump, reducing vacuum efficiency. Existing dust filter devices for vacuum atomizing furnaces are passive systems that primarily rely on physical sedimentation and mechanical interception. While simple and durable, they are inefficient, require frequent maintenance, and significantly limit the yield and purity of the powder product. Therefore, we propose a novel vacuum dust filter for atomizing furnaces. Utility Model Content

[0003] The main objective of this invention is to provide a novel vacuum dust filter for atomizing furnaces, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel vacuum dust filter for an atomizing furnace includes an inner connecting pipe and an outer connecting pipe. The inner connecting pipe is nested within the outer connecting pipe. The air inlet port of the inner connecting pipe is equipped with an air inlet connecting flange. A sealing gasket is fixedly installed on the edge of the air inlet connecting flange. The air inlet connecting flange is fixedly and sealed to one end of the outer connecting pipe. The other end of the outer connecting pipe is sealed and connected to a connecting chamber. A filter screen frame is embedded and fixedly installed inside the connecting chamber. Diffusion pump oil is added to the bottom of the connecting chamber. A high-altitude pressure ball valve is connected to the middle of the lower end face of the connecting chamber. Air outlet connecting flanges are connected to the two equal parts of the outer arc surface of the outer connecting pipe. An oil filling pipe is also connected to the arc surface of the outer connecting pipe. The port of the oil filling pipe is equipped with a sealing end cap.

[0005] Preferably, the upper and lower ports of the external connecting pipe and the upper port of the connecting compartment are provided with connecting flanges. The air inlet connecting flange and the connecting flange at the upper end of the external connecting pipe are connected by bolts and locked together, and sealed in the middle by a sealing gasket.

[0006] Preferably, the connecting flange at the lower port of the external connecting pipe and the connecting flange at the upper port of the connecting compartment are connected by bolts through and locked together, and sealed in the middle by a sealing gasket.

[0007] Preferably, a sealing ring is provided at the lower port edge of the filter frame, and the outer surface of the inner connecting tube and the filter frame are pressed together by the sealing ring to form a seal.

[0008] Preferably, the refueling pipe is inserted into the external connecting pipe at a 45-degree angle to the horizontal plane, and the edge is sealed by welding. The sealing end cap has a sealing rubber ring on the edge of the sealing end face, and the sealing rubber ring is tightened by bolt connection to seal.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the vacuum dust filter can effectively remove impurities present in the vacuum system through the filter frame and diffusion pump oil. It features high filtration accuracy, low resistance, compact structure that does not occupy space, and convenient maintenance. It does not require frequent cleaning of the filter due to the accumulation of dust particles, thus effectively extending the service life of the vacuum unit. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall cross-sectional structure of a novel vacuum dust filter for an atomizing furnace according to this utility model; Figure 2 This is a top view of a novel vacuum dust filter for an atomizing furnace according to this utility model.

[0011] In the diagram: 1. Inlet flange; 2. Sealing gasket 1; 3. Bolt; 4. External connecting pipe; 5. Internal connecting pipe; 6. Sealing gasket 2; 7. Filter screen; 8. Connecting compartment; 9. Diffusion pump oil; 10. High-altitude pressure ball valve; 11. Outlet flange; 12. Oil filling pipe; 13. Sealing end cap. Detailed Implementation

[0012] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0013] Example: Figure 1-2As shown, a novel vacuum dust filter for an atomizing furnace includes an inner connecting pipe 5 and an outer connecting pipe 4. The inner connecting pipe 5 is nested in the outer connecting pipe 4. The air inlet port of the inner connecting pipe 5 is provided with an air inlet connecting flange 1. A sealing gasket 2 is fixedly installed on the edge of the air inlet connecting flange 1. The air inlet connecting flange 1 is fixedly and sealed to one end of the outer connecting pipe 4. The other end of the outer connecting pipe 4 is sealed and connected to the connecting chamber 8. A filter screen frame 7 is embedded and fixedly installed inside the connecting chamber 8. Diffusion pump oil 9 is added to the bottom of the connecting chamber 8. A high-altitude pressure ball valve 10 is connected to the middle of the lower end face of the connecting chamber 8. The high-altitude pressure ball valve 10 is used to discharge the diffusion pump oil 9 after it has been saturated with adsorption. Then, new diffusion pump oil 9 is injected through the oil filling pipe 12. An air outlet connecting flange 11 is connected to each of the two equal parts of the outer arc surface of the outer connecting pipe 4. An oil filling pipe 12 is also connected to the arc surface of the outer connecting pipe 4. A sealing end cap 13 is provided at the end of the oil filling pipe 12. The upper and lower ports of the external connecting pipe 4 and the upper port of the connecting compartment 8 are all equipped with connecting flanges. The air inlet connecting flange 1 and the connecting flange at the upper end of the external connecting pipe 4 are connected by bolts 3 through and locked, and sealed in the middle by sealing gasket 2. Specifically, after the inner connecting pipe 5 is embedded into the outer connecting pipe 4, it is sealed to the upper port of the outer connecting pipe 4 through the inlet connecting flange 1. The gas that needs to be filtered flows in through the upper port of the inner connecting pipe 5 and comes into contact with the diffusion pump oil 9, so that the impurities in the gas are adsorbed by the oil. Then, after being filtered by the filter screen frame 7 in the connecting chamber 8, it is discharged from the outlet connecting flange 11 into the vacuum pump, thereby avoiding the harm of dust particles to the vacuum pump.

[0014] The connecting flange at the lower port of the external connecting pipe 4 and the connecting flange at the upper port of the connecting chamber 8 are connected by bolts 3 through and locked, and sealed in the middle by sealing gasket 6. Specifically, the connection chamber 8 and the external connecting pipe 4 are connected by a sealing gasket 2 6 to form a seal, wherein the bolt 3 serves to tighten the sealing gasket 2 6 to achieve the seal.

[0015] A sealing ring is provided at the lower port edge of the filter frame 7, and the outer surface of the inner connecting pipe 5 and the filter frame 7 are pressed together by the sealing ring to form a seal; Specifically, the sealing ring seals the connection between the inner connecting pipe 5 and the filter frame 7, preventing dust from escaping through the gap and damaging the vacuum pump.

[0016] The refueling pipe 12 is inserted into the external connecting pipe 4 at a 45-degree angle to the horizontal plane, and the edge is sealed by welding. The sealing end cap 13 has a sealing rubber ring on the edge of the sealing end face, and the sealing rubber ring is sealed by bolt 3. Specifically, the filler pipe 12 is used to add diffusion pump oil 9. The filling method is to inject diffusion pump oil 9 into the filler pipe 12 by opening the sealing end cap 13. Then, the diffusion pump oil 9 can flow into the bottom of the connecting chamber 8 through the filter screen frame 7. After filling, the sealing end cap 13 needs to be resealed to fill the filling port of the filler pipe 12. The sealing rubber ring is used to seal the gap between the end cap 13 and the edge of the filler pipe 12 port.

[0017] It should be noted that this utility model is a novel vacuum dust filter for atomizing furnaces. When in use, the atomizing furnace needs to be evacuated during metal smelting and material preparation, and inert gases (such as argon, nitrogen, etc.) are introduced during the smelting process for protection to prevent the molten metal from being oxidized during atomization (because the industrial vacuum environment is not an absolute vacuum). At the same time, the inert gas can also help atomize the molten metal into finer droplets, improving the sphericity and fine powder rate of the powder. During vacuuming, the vacuum pump's input end is connected to the outlet flange 11 for evacuation. At this time, the gas and dust inside the atomizing furnace are introduced from the upper port of the inner connecting pipe 5, and then the airflow directly hits the diffusion pump oil 9, adsorbing the dust in the gas. Then, it undergoes secondary filtration through the filter frame 7. The filtered gas is discharged from the outlet flange 11 into the vacuum pump and then discharged, thus completing the filtration and vacuuming process. The filter material is selected from filter media with excellent high temperature resistance and corrosion resistance, such as ceramic fiber, metal mesh, or special alloy materials. These materials can not only effectively capture fine dust particles, but also maintain stable filtration performance in extreme environments.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel vacuum dust filter for atomizing furnace, characterized in that: The device includes an inner connecting pipe (5) and an outer connecting pipe (4). The inner connecting pipe (5) is nested in the outer connecting pipe (4). The air inlet port of the inner connecting pipe (5) is provided with an air inlet connecting flange (1). A sealing gasket (2) is fixedly installed on the edge of the air inlet connecting flange (1). The air inlet connecting flange (1) is fixedly and sealed to one end of the outer connecting pipe (4). The other end of the outer connecting pipe (4) is sealed and connected to the connecting chamber (8). A filter screen frame (7) is embedded and fixedly installed inside the connecting chamber (8). A diffusion pump oil (9) is added to the bottom of the connecting chamber (8). A high-altitude pressure ball valve (10) is connected to the middle of the lower end face of the connecting chamber (8). An air outlet connecting flange (11) is connected to each of the two equal parts of the outer arc surface of the outer connecting pipe (4). An oil filling pipe (12) is also connected to the arc surface of the outer connecting pipe (4). A sealing end cap (13) is provided at the port of the oil filling pipe (12).

2. The novel vacuum dust filter for atomizing furnace according to claim 1, characterized in that: The upper and lower ports of the external connecting pipe (4) and the upper port of the connecting compartment (8) are provided with connecting flanges. The air inlet connecting flange (1) and the connecting flange at the upper end of the external connecting pipe (4) are connected by bolts (3) and sealed in the middle by a sealing gasket (2).

3. The novel vacuum dust filter for atomizing furnace according to claim 2, characterized in that: The connecting flange at the lower port of the external connecting pipe (4) and the connecting flange at the upper port of the connecting compartment (8) are connected by bolts (3) through and locked together, and sealed in the middle by a sealing gasket (6).

4. A novel vacuum dust filter for an atomizing furnace according to claim 3, characterized in that: The filter screen frame (7) has a sealing ring at the lower port edge, and the outer surface of the inner connecting pipe (5) and the filter screen frame (7) are pressed together by the sealing ring to form a seal.

5. A novel vacuum dust filter for an atomizing furnace according to claim 4, characterized in that: The refueling pipe (12) is inserted into the external connecting pipe (4) at a 45-degree angle to the horizontal plane, and the edge is sealed by welding. The sealing end cap (13) has a sealing rubber ring on the edge of the sealing end face, and the sealing rubber ring is sealed by bolts (3).

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