Tungsten alloy powder production device for 3D printing

Abstract

The tungsten alloy powder production device for 3D printing comprises a furnace tube, a heat preservation furnace cavity, a cooling water jacket and a cooling water tower, a reduction cavity is formed in the furnace tube, the furnace tube penetrates through the heat preservation furnace cavity and the cooling water jacket, and a first heating body is arranged in the position, located in the heat preservation furnace cavity, of the outer wall of the furnace tube; two ends of the cooling water jacket are respectively sealed with the outer wall of the furnace tube, two ends of the cooling water jacket are provided with a water inlet and a water outlet, the water outlet is connected with the cooling water tower through a water return pipe, the water inlet is connected with the cooling water tower through a water inlet pipe, and a pump body is arranged on the water inlet pipe. According to the powder production device, the cooling water tower is arranged on the cooling water jacket, rapid cooling circulating water of the cooling water tower is utilized, continuous low-temperature cooling water is provided for the cooling water jacket, and the purposes of cooling water recycling and water cost reduction are achieved.

Description

Technical field

[0001] The utility model relates to a tungsten alloy powder production device for 3D printing. [Background Technology]

[0002] Reduction furnaces are widely used in the powder metallurgy industry to produce metal powders such as tungsten and cobalt powders. The furnace tubes are generally divided into two zones: a heating zone and a cooling zone. Hydrogen flows through the heating zone to initiate a reduction reaction, reducing metal compounds to metal powders. Circulating water flows through the cooling zone to cool the metal powders, allowing them to exit the furnace at a low temperature for subsequent processing. Currently, the cooling zone uses running tap water, which results in high water consumption and costs.

[0003] Therefore, it is necessary to make further improvements. [Utility Model Content]

[0004] The purpose of this utility model is to overcome the above problems. We provide a tungsten alloy powder production device for 3D printing, which can reduce the cost of cooling water required for tungsten powder production.

[0005] To achieve the above-mentioned purpose, the utility model provides a tungsten alloy powder production device for 3D printing, which includes a furnace tube, an insulation furnace cavity, a cooling water jacket and a cooling water tower. A reduction chamber is formed inside the furnace tube, and the furnace tube passes through the insulation furnace cavity and the cold water jacket. The outer wall of the furnace tube is located in the insulation furnace cavity and is provided with a first heating body. The furnace tube is located at the front side of the insulation furnace cavity and is provided with a hydrogen inlet. The two ends of the cooling water jacket are respectively sealed with the outer wall of the furnace tube, and the two ends of the cooling water jacket are provided with a water inlet and a water outlet. The water outlet is connected to the cooling water tower through a return pipe, and the water inlet is connected to the cooling water tower through an inlet pipe. A pump body is provided on the inlet pipe.

[0006] In one or more embodiments, the cooling water tower includes a water collecting pan, an air cooling chamber and a water storage area arranged from top to bottom, and multiple water guide curtains are arranged at intervals on the air cooling area. The return pipe is connected to the inside of the water collecting pan, and the water inlet pipe is connected to the water storage area.

[0007] In one or more embodiments, the air cooling zone is further provided with a fan, and the air outlet end of the fan corresponds to the water guide curtain.

[0008] In one or more embodiments, a first temperature sensor and a second temperature sensor are respectively provided at both ends of the cooling water jacket, and the first temperature sensor and the second temperature sensor control the working state of the fan.

[0009] In one or more embodiments, a boat pushing mechanism is provided on the input end of the furnace tube, and the boat pushing mechanism is used to push the boat into the furnace tube.

[0010] In one or more embodiments, the heat-insulating furnace cavity includes an inner refractory brick layer and an outer heat-insulating layer.

[0011] In one or more embodiments, a plurality of first heating bodies are provided, and the plurality of first heating bodies are evenly distributed axially around the outer wall of the furnace tube.

[0012] Compared with the background technology, the present invention has the following effects: the powder production device is equipped with a cooling water tower on the cooling water jacket, and utilizes the rapid cooling circulating water of the cooling water tower to provide a continuous supply of low-temperature cooling water for the cooling water jacket, thereby realizing the recycling of cooling water and reducing water costs.

Brief Description of the Drawings

[0013] Figure 1 Schematic diagram of the structure of the powder production device of this embodiment. [Specific implementation method]

[0014] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0015] See attached Figure 1 The present application provides a tungsten alloy powder production device for 3D printing, which includes a furnace tube 1, an insulation furnace cavity 2, a cooling water jacket 3 and a cooling water tower 4. A reduction chamber is formed inside the furnace tube. The furnace tube 1 passes through the insulation furnace cavity 2 and the cold water jacket 3. The outer wall of the furnace tube is located in the insulation furnace cavity and is provided with a first heating body 5. The furnace tube is located in the front side of the insulation furnace cavity and is provided with a hydrogen inlet 6. The two ends of the cooling water jacket 3 are respectively sealed with the outer wall of the furnace tube 1. The two ends of the cooling water jacket are provided with a water inlet and a water outlet. The water outlet is connected to the cooling water tower 4 through a return pipe 7. The water inlet is connected to the cooling water tower through an inlet pipe 8. A pump body 9 is provided on the inlet pipe. The circulating cooling water used by the cooling water jacket is recycled after being cooled by the cooling water tower, reducing water costs and avoiding water resource waste. Specifically, the cooling water tower physically cools the high-temperature hot water output by the return pipe, stores the cooled water, and then transports the cooled water back to the cooling water jacket for use through the pump body.

[0016] The cooling water tower comprises a water collection pan 10, an air-cooling chamber, and a water storage area 11, arranged from top to bottom. Multiple water guide curtains 12 are spaced apart above the air-cooling area. The return pipe 7 is connected to the interior of the water collection pan 10, and the water inlet pipe 8 is connected to the water storage area 11. Hot water collected by the water collection pan flows downward along the water guide curtains. During this flow, the wind passing through the water guide curtains, combined with the increased heat exchange area provided by the water guide curtains, can rapidly cool the water. Furthermore, a fan 13 is provided in the air-cooling area, with the fan's outlet aligned with the water guide curtains to further enhance the cooling effect.

[0017] A first temperature sensor 14 and a second temperature sensor 15 are respectively provided at both ends of the cooling water jacket 3. The first temperature sensor and the second temperature sensor control the working state of the fan 13. The first temperature sensor is provided close to the water inlet, and the second temperature sensor is provided close to the water outlet. By sensing the inlet water temperature and the outlet water temperature, it is determined whether the current water meets the cooling requirements. When the inlet water temperature and the outlet water temperature are both too high, the fan is started to improve the cooling effect and quickly cool the return water.

[0018] A boat pushing mechanism 16 is provided on the input end of the furnace tube 1 , and the boat pushing mechanism 16 is used to push a boat into the furnace tube, and the boat is used to hold tungsten powder.

[0019] The heat-insulating furnace cavity 2 includes an inner refractory brick layer 21 and an outer heat-insulating layer 22. The refractory brick layer has excellent fire-resistant performance and can reduce heat loss in conjunction with the heat-insulating layer.

[0020] There are multiple first heating bodies 5, which are evenly distributed axially around the outer wall of the furnace tube 1 to ensure that the furnace tube can be quickly heated to the required temperature. The temperature of the furnace tube can be sensed by setting a temperature sensor on the furnace tube.

[0021] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A tungsten alloy powder production device for 3D printing, characterized by: The invention comprises a furnace tube (1), an insulating furnace cavity (2), a cooling water jacket (3) and a cooling water tower (4); a reduction cavity is formed inside the furnace tube; the furnace tube (1) passes through the insulating furnace cavity (2) and the cooling water jacket (3); a first heating body (5) is provided on the outer wall of the furnace tube located in the insulating furnace cavity; a hydrogen inlet (6) is provided on the front side of the furnace tube located in the insulating furnace cavity; both ends of the cooling water jacket (3) are respectively sealed with the outer wall of the furnace tube (1); a water inlet and a water outlet are provided on both ends of the cooling water jacket; the water outlet is connected to the cooling water tower (4) through a return water pipe (7); the water inlet is connected to the cooling water tower through an inlet pipe (8); and a pump body (9) is provided on the inlet pipe.

2. The tungsten alloy powder production device for 3D printing according to claim 1, characterized in that: The cooling water tower comprises a water collecting tray (10), an air cooling chamber and a water storage area (11) arranged from top to bottom, a plurality of water guide curtains (12) are arranged at intervals on the air cooling area, the return water pipe (7) is connected to the interior of the water collecting tray (10), and the water inlet pipe (8) is connected to the water storage area (11).

3. The tungsten alloy powder production device for 3D printing according to claim 2, characterized in that: The air cooling zone is further provided with a fan (13), the air outlet end of the fan corresponds to the water guide curtain.

4. The tungsten alloy powder production device for 3D printing according to claim 3, characterized in that: A first temperature sensor (14) and a second temperature sensor (15) are respectively provided at both ends of the cooling water jacket (3), and the first temperature sensor and the second temperature sensor control the working state of the fan (13).

5. The tungsten alloy powder production device for 3D printing according to claim 1, characterized in that: A boat pushing mechanism (16) is provided on the input end of the furnace tube (1), and is used to push the boat into the furnace tube.

6. A tungsten alloy powder production device for 3D printing according to any one of claims 1 to 5, characterized in that: The heat-insulating furnace cavity (2) comprises an inner refractory brick layer (21) and an outer heat-insulating layer (22).

7. A tungsten alloy powder production device for 3D printing according to any one of claims 1 to 5, characterized in that: A plurality of the first heating bodies (5) are provided, and the plurality of first heating bodies are evenly distributed axially around the outer wall of the furnace tube (1).

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