Cooling device for nitrogen atomization pulverization

Abstract

A cooling device for nitrogen atomization pulverization effectively solves the problem of poor cooling effect and comprises an atomization pulverization bin, a feed liquid box is fixedly connected to the top end of the atomization pulverization bin, an atomization spray head is installed in the middle of the atomization pulverization bin, and the feed liquid box is connected with the atomization spray head through a guide pipe. The atomization powder making bin is provided with blowing covers located on the left side and the right side of the atomization nozzle, the right side of the atomization powder making bin is provided with refrigeration equipment, the refrigeration equipment comprises a box body, an air inlet is formed in the right side of the box body, and an air outlet pipe, a draught fan and a spraying device are sequentially installed on the top of the box body from left to right. The water collecting tank is communicated with the spraying device through a water pipe, a water absorber in the vertical direction is fixed in the box body, a filter screen is installed in the air outlet pipe, and the air outlet pipe is communicated with the blowing cover through a pipeline; the atomization powder making bin is provided with a discharging port, the discharging port is connected with a material conveying pipe, and a spiral water pipe is wound outside the material conveying pipe.

Description

Technical Field

[0001] This utility model belongs to the field of atomized powder production technology, and in particular relates to a cooling device for nitrogen atomized powder production. Background Technology

[0002] Atomization is a powder preparation method that uses a rapidly moving fluid (atomizing medium) to impact or otherwise break down liquid metal or alloy into fine droplets, which are then condensed into solid powder. Atomized powders have a high sphericity and high bulk density, and their compressibility varies depending on the powder shape. Industrially, nitrogen is used to atomize high-speed steel powder, metal powder, etc.

[0003] Existing nitrogen atomization powder production uses a single atomization production system, i.e., one spray device connected to one grading system. After the alloy powder is atomized by the spray device, it enters the atomization chamber and is cooled by rapid condensation during high-speed airflow and the cooling air volume in the atomization chamber. However, the above atomization production system only has one circulating fan, which has small air volume, high air temperature, and poor cooling effect, thus affecting the quality of the product. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a cooling device for nitrogen atomization powder making, which effectively solves the problem of poor cooling effect.

[0005] The technical solution to the technical problem is as follows: including an atomizing powder-making chamber, a liquid tank is fixedly connected to the top of the atomizing powder-making chamber, an atomizing nozzle is installed in the middle of the atomizing powder-making chamber, the liquid tank and the atomizing nozzle are connected by a conduit, the atomizing powder-making chamber is equipped with blowers located on the left and right sides of the atomizing nozzle, the blowers are set at an angle downwards, and a cooling device is provided on the right side of the atomizing powder-making chamber.

[0006] The refrigeration equipment includes a cabinet with an air inlet on the right side. From left to right, an air outlet duct, a fan, and a spray device are installed on the top of the cabinet. A water collection tank is located at the bottom of the cabinet, and a condenser is installed inside the water collection tank. The water collection tank is connected to the spray device via a water pipe. A vertical water absorber is fixed inside the cabinet and is located to the left of the spray device. A filter screen is installed inside the air outlet duct, and the air outlet duct is connected to the blower hood via a pipe.

[0007] The bottom of the atomizing powder-making chamber is equipped with a discharge port, which is connected to a horizontally arranged conveying pipe. The other end of the conveying pipe is equipped with a powder-making and grading device, and a spiral water pipe is wrapped around the outside of the conveying pipe.

[0008] Preferably, a guide plate is installed inside the atomizing powder-making chamber, located below the atomizing nozzle.

[0009] Preferably, a circulating water pump is installed at the bottom of the tank, with one end of the circulating water pump connected to the water collection tank and the other end of the circulating water pump connected to a water pipe.

[0010] Preferably, a booster pump is installed on the conduit.

[0011] Preferably, a support frame is fixedly connected to the bottom end of the atomizing powder-making chamber.

[0012] This invention offers the following advantages over traditional equipment: 1) It features a clever structure with multiple cooling devices and graded cooling processes, ensuring the cooling effect of nitrogen atomization powder production and improving product quality; 2) The condenser in the refrigeration equipment is installed inside the water collection tank, maintaining a suitable cooling temperature. The cooling water is then pumped to the spray device via a circulating water pump to form a cooling water mist, achieving rapid cooling of the gas with good stability. The cooled gas is then delivered clean cold air to the blower hood via a water absorber and filter, ensuring the cleanliness and cooling effect of the powder production; 3) The conveying pipe is horizontally positioned and wrapped with a spiral water pipe, increasing the conveying time of the metal powder within the pipe, improving the cooling efficiency of the spiral water pipe, and ensuring the production quality of the product. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front view of this utility model;

[0014] Figure 2 This is a schematic diagram of the refrigeration equipment in this utility model.

[0015] Attached reference numerals: 1. Atomizing powder-making chamber; 2. Liquid tank; 3. Atomizing nozzle; 4. Blower hood; 5. Box body; 6. Air inlet; 7. Air outlet pipe; 8. Fan; 9. Spraying device; 10. Water collection tank; 11. Condenser; 12. Water suction device; 13. Filter screen; 14. Pipe; 15. Discharge port; 16. Conveying pipe; 17. Powder-making and grading equipment; 18. Spiral water pipe; 19. Guide plate; 20. Circulating water pump; 21. Booster pump. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Depend on Figures 1 to 2 A cooling device for nitrogen atomization powder production is provided, comprising an atomization powder production chamber 1, a liquid tank 2 fixedly connected to the top of the atomization powder production chamber 1, an atomization nozzle 3 installed in the middle of the atomization powder production chamber 1, the liquid tank 2 and the atomization nozzle 3 being connected by a conduit, the atomization powder production chamber 1 being equipped with blower hoods 4 located on the left and right sides of the atomization nozzle 3, the blower hoods 4 being inclined downwards, and a cooling device being provided on the right side of the atomization powder production chamber 1;

[0018] The refrigeration equipment includes a housing 5. An air inlet 6 is provided on the right side of the housing 5. An air outlet 7, a fan 8, and a spray device 9 are installed on the top of the housing 5 from left to right. A water collection tank 10 is provided at the bottom of the housing 5. A condenser 11 is installed in the water collection tank 10. The water collection tank 10 is connected to the spray device 9 via a water pipe. A vertical water absorber 12 is fixed inside the housing 5. The water absorber 12 is located to the left of the spray device 9. A filter screen 13 is installed in the air outlet 7. The air outlet 7 is connected to the blower hood 4 via a pipe 14.

[0019] The bottom of the atomizing powder-making chamber 1 is provided with a discharge port 15, which is connected to a horizontally arranged conveying pipe 16. The other end of the conveying pipe 16 is equipped with a powder-making and grading device 17, and a spiral water pipe 18 is wound around the outside of the conveying pipe 16.

[0020] The atomizing powder-making chamber 1 is equipped with a guide plate 19 located below the atomizing nozzle 3.

[0021] A circulating water pump 20 is installed at the bottom of the box 5. One end of the circulating water pump 20 is connected to the water collection tank 10, and the other end of the circulating water pump 20 is connected to the water pipe.

[0022] A booster pump 21 is installed on the conduit.

[0023] A support frame is fixedly connected to the bottom of the atomizing powder-making chamber 1.

[0024] When this utility model is in use, the fan 8 and the circulating water pump 20 on the refrigeration equipment are started. The fan 8 creates a negative pressure inside the box 5, and the air outside the box 5 is drawn into the box 5 through the air inlet 6. The circulating water pump 20 pressurizes the water in the water collection tank 10 through the water pipe to the spray device 9. The spray device 9 includes multiple spray heads, which spray water mist downwards at the same time. The sprayed water mist can cool the gas inside the box 5. A condenser 11 is installed in the water collection tank 10. The condenser 11 can cool the water in the water collection tank 10. The cooled water is pressurized to the spray device 9, which can keep the sprayed water mist at a cool temperature and has good stability. The cooled gas continues to move to the left. Under the action of the water absorber 12, it can absorb the moisture in the gas. A filter screen 13 is installed in the air outlet pipe 7. The filter screen 13 can filter impurities in the gas. The filtered gas is pressurized through the pipe 14 to the blower hood 4. The blower hood 4 blows the cold air into the atomizing powder making chamber 1.

[0025] Then, the booster pump 21 is turned on. The molten metal inside the liquid tank 2 is pressurized by the booster pump 21 and injected into the atomizing nozzle 3 through the conduit. The atomizing nozzle 3 atomizes and sprays it out. The atomizing nozzle 3 is equipped with air blowers 4 on both sides. The air blowers 4 are set at an angle downwards, so that the cold air blown out by the air blowers 4 cools the molten metal and solidifies it into metal powder. The atomizing powder preparation chamber 1 is equipped with a guide plate 19 located below the atomizing nozzle 3. The guide plate 19 can not only guide the metal powder, but also increase the residence time of the metal powder in the atomizing powder preparation chamber 1, prolong the cooling time of the metal powder by the cold air, and improve the cooling powder preparation. For efficiency, the metal powder moves downward through the outlet 15 to the conveying pipe 16. Under air pressure, the metal powder moves to the left inside the conveying pipe 16. A spiral water pipe 18 is wound around the outside of the conveying pipe 16. The spiral water pipe 18 contains flowing water, which can further cool the metal powder. The conveying pipe 16 is set in a horizontal direction, which reduces the running speed of the metal powder and increases the cooling time of the metal powder by the spiral water pipe 18, so that the metal powder is cooled to a suitable and stable temperature. A powder grading device 17 is installed at the other end of the conveying pipe 16. The cooled metal powder is graded into products of different specifications by the grading device.

[0026] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A cooling device for nitrogen atomized powder production, comprising an atomized powder production bin (1), a top end of the atomized powder production bin (1) is fixedly connected with a liquid tank (2), an atomized nozzle (3) is installed at a middle position of the atomized powder production bin (1), and the liquid tank (2) and the atomized nozzle (3) are connected through a conduit, characterized in that, The atomization powder making bin (1) is provided with air blowing covers (4) on the left and right sides of the atomization nozzle (3), the air blowing covers (4) are arranged obliquely downward, and the right side of the atomization powder making bin (1) is provided with a refrigeration device; The refrigeration device comprises a box body (5), the right side of the box body (5) is provided with an air inlet (6), the top of the box body (5) is sequentially provided from left to right with an air outlet pipe (7), a fan (8) and a spraying device (9), the bottom of the box body (5) is provided with a water collecting tank (10), the water collecting tank (10) is provided with a condenser (11), the water collecting tank (10) and the spraying device (9) are communicated through a water pipe, the box body (5) is fixedly provided with a water suction device (12) in the vertical direction, the water suction device (12) is located on the left side of the spraying device (9), the air outlet pipe (7) is provided with a filter screen (13), and the air outlet pipe (7) is communicated with the air blowing cover (4) through a pipeline (14); The bottom of the atomization powder making bin (1) is provided with a discharge port (15), the discharge port (15) is connected with a horizontal conveying pipe (16), the other end of the conveying pipe (16) is provided with a powder making and grading device (17), and the conveying pipe (16) is provided with a spiral water pipe (18).

2. The cooling device for nitrogen-atomized powder production according to claim 1, characterized in that, The atomization powder making bin (1) is provided with a guide plate (19) below the atomization nozzle (3).

3. The cooling device for nitrogen-atomized powder production according to claim 1, characterized in that, The bottom of the box body (5) is provided with a circulating water pump (20), one end of the circulating water pump (20) is communicated with the water collecting tank (10), and the other end of the circulating water pump (20) is communicated with the water pipe.

4. The cooling device for nitrogen-atomized powder production according to claim 1, characterized in that, A booster pump (21) is arranged on the pipeline.

5. The cooling device for nitrogen-atomized powder production according to claim 1, characterized in that, The bottom end of the atomization powder making bin (1) is fixedly connected with a support frame.

Images