A gravity dust collector for a vacuum degassing furnace

Abstract

The utility model discloses a vacuum degassing furnace gravity dust remover, including dust removal upper cavity, dust removal cover and dust removal lower cavity, dust removal cover covers the top of dust removal upper cavity, be equipped with with dust removal upper cavity intercommunication's air inlet on dust removal cover, the lateral wall of dust removal upper cavity is provided with the air outlet, and the inside of dust removal upper cavity is provided with the baffle, dust removal lower cavity is fixed on the lower cavity support, dust removal upper cavity is set up in the upper of dust removal lower cavity through the support frame, and the bottom of dust removal upper cavity is connected together with the top of dust removal lower cavity, the bottom of dust removal lower cavity is provided with the discharge port, and is provided with the discharge cover on this discharge port, the vacuum degassing furnace gravity dust remover of the utility model can realize the full separation of the large particle pollutants in the airflow in the vacuum system vacuumizing process, to ensure the vacuum environment of smelting chamber.

Description

Technical Field

[0001] This utility model belongs to the technical field of vacuum degassing furnace equipment, specifically relating to a gravity dust collector for a vacuum degassing furnace. Background Technology

[0002] With the rapid development of modern industry, people have increasingly higher requirements for the use of mechanical parts. The increasingly harsh operating environments have placed new demands on the high-temperature resistance, wear resistance, and fatigue resistance of metallic materials. For certain specific metals or alloys, whether in the early stages of research and development or in the later stages of mass production and application, the research and development of high-performance metal alloys requires the support of metal smelting equipment and surface heat treatment equipment. Among the many special heating or smelting methods, induction heating technology plays a crucial role in the smelting and preparation of metallic materials.

[0003] The vacuum degassing furnace melts solid metal in an atmospheric environment, and the refining stage degassing the melted metal in a vacuum state; the liquid metal is cast in an atmospheric environment or under the protection of an inert gas.

[0004] To achieve vacuum degassing in the furnace, the entire furnace shell is made into a completely enclosed form, and a sealing flange is designed at the top of the furnace body. After melting under atmospheric conditions, the water-cooled top cover is moved to the top of the furnace using a crane or a dedicated lifting / rotating device (optional). The water-cooled top cover is directly connected to a multi-stage mechanical vacuum pump system, which can directly degas the molten metal pool.

[0005] The induction coil is equipped with a power supply whose power and frequency are matched, enabling both high melting rates (increasing productivity) and optimal stirring of the molten metal (improving metallurgical quality). The appropriate stirring frequency ensures both uniform alloy mixing and sufficient gas exchange in the churning molten metal. Once the air inside the furnace is evacuated, the degassing process and enhanced carbon-oxygen reaction help remove harmful gaseous components, resulting in significantly lower hydrogen, ammonia, and oxygen content compared to metals refined under atmospheric conditions. After degassing, the furnace cover is removed, and a protective sleeve is placed on the top sealing flange. The furnace can then be tilted under atmospheric conditions to pour molten steel into a runner or mold. The casting process is typically completed under atmospheric conditions (but can also be done under a protective atmosphere).

[0006] Vacuum degassing furnaces are essential and irreplaceable equipment for smelting and producing high-quality alloy steel. The vacuum system is a crucial system in a complete set of vacuum degassing furnace equipment. The optimization and cleaning of the vacuum system is an essential part of the engineering design of vacuum furnaces and a major research direction for improving the gas extraction performance and production efficiency of vacuum melting systems.

[0007] However, there is still a significant gap between domestic and international technological levels, mainly in process equipment control and vacuum system testing instruments. Domestically produced vacuum equipment systems are too simple and crude, with rudimentary process control and sensing methods. As a result, vacuum systems suffer from various drawbacks: vacuum pumps and valves are prone to contamination, have high failure rates, and short service lives. Therefore, a reasonable gravity dust collector design becomes extremely crucial. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gravity dust collector for a vacuum degassing furnace, which can fully separate large particulate pollutants in the gas flow during the vacuuming process of the vacuum system, so as to ensure the vacuum environment of the melting chamber.

[0009] The technical solution to achieve the above objective is: a gravity dust collector for a vacuum degassing furnace, comprising an upper dust collection chamber, a dust collection cover, and a lower dust collection chamber, wherein:

[0010] The dust removal cover covers the top of the upper dust removal cavity, and the dust removal cover has an air inlet that communicates with the upper dust removal cavity;

[0011] An air outlet is provided on the side wall of the upper dust removal chamber, and a baffle is provided inside the upper dust removal chamber;

[0012] The dust removal lower cavity is fixed on the lower cavity support;

[0013] The upper dust removal chamber is mounted above the lower dust removal chamber via a support frame, and the bottom end of the upper dust removal chamber is connected to the top end of the lower dust removal chamber.

[0014] The bottom of the dust removal chamber is provided with a discharge port, and a discharge cover is provided on the discharge port.

[0015] In the aforementioned gravity dust collector for a vacuum degassing furnace, the lower dust collection chamber is a cone shape that is larger at the top and smaller at the bottom.

[0016] In the aforementioned gravity dust collector for a vacuum degassing furnace, rollers are provided at the bottom end of the lower cavity support.

[0017] In the aforementioned gravity dust collector for a vacuum degassing furnace, a connecting seat is provided on the lower part of the outer side wall of the dust collection upper cavity, and the top end of the support frame is fixed on the connecting seat.

[0018] In the aforementioned gravity dust collector for a vacuum degassing furnace, the baffle is disposed near the connection between the upper and lower dust collection chambers.

[0019] This utility model discloses a gravity dust collector for a vacuum degassing furnace. It features an inlet at the top and an outlet on the side. During system operation, solid particulate pollutants in the airflow enter the upper chamber through the inlet. The baffles in the upper chamber trap the solid particles, causing them to settle in the lower chamber. The gas then exits through the outlet into the next stage of filtration, ensuring a vacuum environment in the melting chamber. Due to gravity, heavier particles sink directly to the bottom and accumulate at the bottom of the lower chamber, where a discharge port allows for the removal of the accumulated material. This design ensures thorough separation of large particulate pollutants in the airflow during the vacuum process, guaranteeing a vacuum environment in the melting chamber. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the gravity dust collector for the vacuum degassing furnace of this utility model. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0022] Please see Figure 1 The preferred embodiment of this utility model is a gravity dust collector for a vacuum degassing furnace, comprising an upper dust collection chamber 1, a dust collection cover 2, and a lower dust collection chamber 5.

[0023] A dust collector cover 2 covers the top of the upper dust collector chamber 1, and an air inlet 11 communicating with the upper dust collector chamber 1 is provided on the dust collector cover 2; an air outlet 12 is provided on the side wall of the upper dust collector chamber 2, and a baffle 6 is provided inside the upper dust collector chamber 1; the lower dust collector chamber 5 is fixed on the lower chamber support 3, and a roller 31 is provided at the bottom end of the lower chamber support 3 for easy movement of the entire device; the upper dust collector chamber 1 is set above the lower dust collector chamber 5 by a support frame 4. Specifically, a connecting seat 13 is provided at the lower part of the outer side wall of the upper dust collector chamber 1, and the top end of the support frame 4 is fixed to the connecting seat 13. The bottom end of the upper dust collector chamber 1 is connected to the top end of the lower dust collector chamber 5; the bottom end of the lower dust collector chamber 5 is provided with a discharge port 51, and a discharge cover is provided on the discharge port 51.

[0024] The lower dust collector chamber 5 is a cone shape, wider at the top and narrower at the bottom. A baffle 6 is installed near the connection between the upper dust collector chamber 1 and the lower dust collector chamber 5.

[0025] This utility model relates to a gravity dust collector for a vacuum degassing furnace, a primary dust removal device that utilizes the principle of gravity settling to remove large solid particles from the airflow of a vacuum degassing furnace. It features a simple structure, reliable operation, and low resistance loss, making it a crucial pre-treatment component for protecting subsequent precision vacuum equipment. The upper dust collector chamber 1 serves as the main settling chamber, providing sufficient space for particles to settle due to gravity. The dust collector cover 2, located at the top of the upper dust collector chamber 1, has an air inlet 11 that guides the dust-laden gas tangentially or downwards into the upper dust collector chamber 1, reducing the scouring effect of the airflow on the settled dust. The lower dust collector chamber 5 employs a conical or bucket-shaped structure to collect and temporarily store the settled large dust particles. The lower chamber support 3 and support frame 4 provide stable support and fixation for the entire device. The baffle 6 is typically inclined to block particles, causing them to fall rapidly into the lower dust collector chamber 5. The discharge port 51 is used to periodically and quickly remove accumulated dust from the system, simplifying maintenance.

[0026] The gravity dust collector for the vacuum degassing furnace of this utility model follows the steps of "deceleration, settling, separation, and discharge" during processing. When the vacuum system is running, the airflow enters from the inlet 11 at the top of the dust removal upper chamber 1, passes through the dust removal upper chamber 1, and is blocked by the baffle 6 in the dust removal upper chamber 1. Due to gravity, the heavier particles will sink directly to the bottom and accumulate in the dust removal lower chamber 5. The gas enters the next vacuum device from the side outlet 12, thereby achieving the preset vacuum degree of the melting chamber.

[0027] In summary, the gravity dust collector for the vacuum degassing furnace of this utility model adopts a structural design with the air inlet at the top and the air outlet on the side, which can fully separate large particulate pollutants in the airflow to ensure the vacuum environment of the melting chamber.

[0028] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A gravity dust collector for a vacuum degassing furnace, characterized in that, It includes an upper dust collection chamber, a dust collection cover, and a lower dust collection chamber, wherein: The dust removal cover covers the top of the upper dust removal cavity, and the dust removal cover has an air inlet that communicates with the upper dust removal cavity; An air outlet is provided on the side wall of the upper dust removal chamber, and a baffle is provided inside the upper dust removal chamber; The dust removal lower cavity is fixed on the lower cavity support; The upper dust removal chamber is mounted above the lower dust removal chamber via a support frame, and the bottom end of the upper dust removal chamber is connected to the top end of the lower dust removal chamber. The bottom of the dust removal chamber is provided with a discharge port, and a discharge cover is provided on the discharge port.

2. The gravity dust collector for a vacuum degassing furnace according to claim 1, characterized in that, The dust removal lower cavity is a cone shape that is larger at the top and smaller at the bottom.

3. The gravity dust collector for a vacuum degassing furnace according to claim 1, characterized in that, The bottom end of the lower cavity support is equipped with rollers.

4. The gravity dust collector for a vacuum degassing furnace according to claim 1, characterized in that, A connecting seat is provided on the lower part of the outer side wall of the dust removal upper cavity, and the top of the support frame is fixed on the connecting seat.

5. The gravity dust collector for a vacuum degassing furnace according to claim 1, characterized in that, The baffle is located near the connection between the upper and lower dust removal chambers.

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