A cooling device for powder metallurgy products

Abstract

This utility model relates to the field of cooling technology in metallurgical manufacturing, and discloses a cooling device for powder metallurgy products. It includes a shell with an internal cooling chamber and a drying chamber. The shell also has a conveying channel connecting the cooling chamber and the drying chamber. An inlet and an outlet are respectively located on both sides of the shell. A mounting frame is fixedly connected to one side of each inlet and outlet. A conveyor belt is installed inside the mounting frame to drive the finished product movement. This utility model provides a cooling device for powder metallurgy products. Through the cooling chamber, conveyor belt, and spraying mechanism, external cooling water can be introduced to spray and cool the finished product in the cooling chamber, accelerating the cooling speed. Through the drying chamber located at the other end of the shell and the air inlet pipe inside the drying chamber, external air can be directly sprayed into the drying chamber, thereby blowing off and drying the residual cooling water on the surface of the parts.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology in metallurgical manufacturing, specifically to a cooling device for powder metallurgy products. Background Technology

[0002] Powder metallurgy technology is widely used in the automotive, machinery, electronics, and aerospace industries due to its advantages such as near-net-shape forming, high material utilization, and ability to manufacture complex parts. The production process of powder metallurgy products usually includes key processes such as powder mixing, pressing, sintering, and post-processing. Among these, the high-temperature products after sintering need to be effectively cooled to stabilize their metallographic structure and mechanical properties and meet the requirements of subsequent processing or storage.

[0003] Currently, common traditional methods for cooling powder metallurgy sintered products mainly include natural cooling, forced air cooling, water cooling, and oil cooling. Among them, water cooling often uses direct spraying or immersion for rapid cooling. Direct immersion is often used for large-volume raw materials, while spraying is more commonly used for small-volume raw materials. However, this spraying method has certain shortcomings. A certain amount of cooling water often remains on the metal surface after spraying. If the residual cooling water is not removed in time, it may cause water stains and rust on the surface of the product during subsequent transportation, processing, or storage, affecting the appearance quality and internal performance of the product. Therefore, a device is needed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cooling device for powder metallurgy products, which solves the problem that residual cooling water on the surface of the product after water cooling can easily lead to rust.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a cooling device for powder metallurgy products, comprising a shell with a cooling chamber and a drying chamber inside, a conveying channel inside the shell for connecting the cooling chamber and the drying chamber, an inlet and an outlet on both sides of the shell, a mounting frame fixedly connected to one side of the inlet and the outlet, and a conveyor belt inside the mounting frame for driving the finished product to move; The cooling chamber is equipped with a spraying mechanism to spray and cool the finished products on the surface of the conveyor belt. The top of the drying chamber is fixedly connected to an air inlet pipe, which is connected to the interior of the drying chamber to blow in air.

[0006] Optionally, the spraying mechanism includes a water inlet pipe, a drain pipe, and a nozzle. The water inlet pipe is fixedly connected to the upper surface of the housing, the drain pipe is fixedly connected to one side of the housing and connected to the bottom of the cooling chamber, and one end of the water inlet pipe that penetrates into the cooling chamber is fixedly connected to the nozzle to deliver cooling water into the nozzle.

[0007] Optionally, the conveying channel is provided at an angle toward the cooling chamber to prevent cooling water from entering the drying chamber.

[0008] Optionally, the feed inlet, the discharge outlet, and both ends of the conveying channel are provided with flip-up baffles, and the opening direction of the baffles is the same as the conveying direction of the conveyor belt.

[0009] Optionally, the surface of the conveyor belt is fixedly connected with a guide plate along the width direction of the conveyor belt to reduce material slippage.

[0010] Optionally, the inner wall of the housing is provided with an air supply channel, and the inner wall of the drying chamber is provided with an air outlet. One end of the air supply channel is connected to the air inlet pipe and the other end is connected to the air outlet, so as to transport the gas in the air inlet pipe to the air outlet.

[0011] Optionally, a guide block is provided at the connection position between the air intake pipe and the air delivery channel. The air delivery channel has an inverted mountain-shaped structure, and the guide block guides the air in the air intake pipe to the air delivery channel.

[0012] Optionally, an exhaust port is provided on one side of the shell at the bottom of the drying chamber. The exhaust port is connected to an external air extraction mechanism to accelerate the gas flow rate inside the drying chamber.

[0013] This utility model provides a cooling device for powder metallurgy products, which has the following beneficial effects: This utility model provides a cooling device for powder metallurgy products. Through a cooling chamber, a conveyor belt, and a spraying mechanism, external cooling water can be introduced to spray the finished products in the cooling chamber, thereby accelerating the cooling speed. In conjunction with the conveyor belt, the cooling efficiency of batch parts can be improved. Through the air drying chamber and the air inlet pipe in the air drying chamber located at the other end of the shell, after the water spraying cooling, the air inlet pipe can directly spray external air into the air drying chamber, thereby blowing off and drying the residual cooling water on the surface of the parts, reducing the impact of residual cooling water on the surface of the parts on subsequent processes, and reducing the occurrence of rust caused by water stains during subsequent storage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side sectional view of the structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the air-drying chamber of this utility model.

[0015] In the diagram: 1. Shell; 2. Cooling chamber; 3. Drying chamber; 4. Feed inlet; 5. Discharge outlet; 6. Mounting frame; 7. Conveyor belt; 8. Air inlet pipe; 9. Water inlet pipe; 10. Drain pipe; 11. Nozzle; 12. Conveying channel; 13. Baffle; 14. Guide plate; 15. Air supply channel; 16. Air outlet; 17. Guide block; 18. Exhaust port. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] Please see Figures 1 to 3 This utility model provides a technical solution: a cooling device for powder metallurgy products, including a shell 1 with a cooling chamber 2 and a drying chamber 3 inside. The shell 1 also has a conveying channel 12 inside to connect the cooling chamber 2 and the drying chamber 3. The shell 1 has an inlet 4 and an outlet 5 on both sides. A mounting frame 6 is fixedly connected to one side of the inlet 4 and the outlet 5. The mounting frame 6 has a conveyor belt 7 inside to drive the finished product to move.

[0018] The cooling chamber 2 is equipped with a spraying mechanism to spray and cool the finished products on the surface of the conveyor belt 7. The top of the drying chamber 3 is fixedly connected to an air inlet pipe 8, which is connected to the interior of the drying chamber 3 to blow in air.

[0019] The conveyor belt 7 is driven to rotate by a drive motor installed on the outside of the mounting frame 6. During the rotation of the conveyor belt 7, the material that needs to be cooled is continuously transported to one side. The conveyor belt 7 is made of metal mesh material, which can resist the high temperature of the material while allowing cooling water to pass through, so as to prevent the cooling water from flowing in the conveying direction of the conveyor belt 7. The material first enters the cooling chamber 2 under the transport of the conveyor belt 7. After being sprayed and cooled by the spraying mechanism in the cooling chamber 2, it enters the drying chamber 3 through the conveying channel 12. The air inlet pipe 8 introduces outside air into the drying chamber 3 to dry the material on the surface of the conveyor belt 7 and reduce the amount of cooling water remaining on the surface of the material. An observation window is set on the outside of the housing 1 at the position of the cooling chamber 2, so as to check the spraying position and cooling effect of the nozzle 11 and make timely adjustments.

[0020] In this embodiment, as a preferred option, the spraying mechanism includes a water inlet pipe 9, a drain pipe 10, and a nozzle 11. The water inlet pipe 9 is fixedly connected to the upper surface of the housing 1, and the drain pipe 10 is fixedly connected to one side of the housing 1 and connected to the bottom of the cooling chamber 2. One end of the water inlet pipe 9 that penetrates into the interior of the cooling chamber 2 is fixedly connected to the nozzle 11 to deliver cooling water to the nozzle 11. The conveying channel 12 is provided with an angle facing the cooling chamber 2 to prevent cooling water from entering the drying chamber 3. The feed inlet 4, the discharge outlet 5, and both ends of the conveying channel 12 are provided with flip-up baffles 13. The opening direction of the baffles 13 is the same as the conveying direction of the conveyor belt 7.

[0021] The inlet pipe 9 introduces external cooling water, which is then sprayed out from the nozzle 11 to cool the material below. The used cooling water falls into the bottom of the cooling chamber 2 and is discharged to the outside through the drain pipe 10 at the bottom of the cooling chamber 2. The bottom of the conveying channel 12 is inclined to prevent water in the conveying channel 12 from entering the drying chamber 3. The baffle 13 is in a vertically downward state due to its own weight. During the material conveying process, when the material comes into contact with the baffle 13, it will push the baffle 13 to one side, causing the baffle 13 to open and enter the cooling chamber 2 or the drying chamber 3. After the material is removed, the baffle 13 will hang down again under the action of gravity. There are multiple baffles 13, and the material can push open the corresponding number of baffles 13 according to the size of the material, which reduces the movement resistance and reduces the amount of cooling water sprayed from the cooling chamber 2 to the outside.

[0022] In this embodiment, as a preferred option, a guide plate 14 along the width direction of the conveyor belt 7 is fixedly connected to the surface of the conveyor belt 7 to reduce material slippage.

[0023] As the conveyor belt 7 rotates, the guide plate 14 moves synchronously on the conveyor belt 7. The upward protrusion of the guide plate 14 can push the material above forward, thereby speeding up the conveying speed. The two sides of the mounting frame 6 extend upward for a certain length to shield the material on the conveyor belt 7 from falling off the sides.

[0024] In this embodiment, as a preferred option, the inner wall of the shell 1 is provided with an air supply channel 15, and the inner wall of the drying chamber 3 is provided with an air outlet 16. One end of the air supply channel 15 is connected to the air inlet pipe 8 and the other end is connected to the air outlet 16, so as to transport the gas in the air inlet pipe 8 to the air outlet 16. A guide block 17 is provided at the connection between the air inlet pipe 8 and the air supply channel 15. The air supply channel 15 has an inverted mountain-shaped structure. The guide block 17 guides the air in the air inlet pipe 8 to the air supply channel 15. An exhaust port 18 is provided on one side of the shell 1 at the bottom of the drying chamber 3. The exhaust port 18 is connected to an external air extraction mechanism to accelerate the gas flow speed in the drying chamber 3.

[0025] The air inlet pipe 8 delivers the gas output from the external compressor or other air supply equipment to the ventilation duct. The ventilation duct has a U-shaped structure. The air entering from the air inlet pipe 8 is diverted by the guide block 17, so that the gas enters the air supply ducts 15 on both sides and is blown out from the air outlet 16. Another gas is blown out directly from the top of the drying chamber 3, drying the material from top to bottom. The air extraction mechanism can be a suction pump or exhaust fan, etc. After being connected to the exhaust port 18, it can make the internal airflow form an airflow channel, blowing out from the top and then being discharged from the bottom, reducing the turbulence caused by the accumulation of airflow inside, thereby improving the drying efficiency.

[0026] In this invention, the working steps of the device are as follows: 1. Install the device in the required position and connect the water inlet pipe 9, drain pipe 10, air inlet pipe 8 and exhaust port 18 to the subsequent equipment respectively. After installation, the front-end equipment discharges the material onto the conveyor belt 7 and starts the drive motor on one side of the conveyor belt 7 to move the conveyor belt 7. 2. When the conveyor belt 7 moves into the cooling chamber 2, the nozzles 11 in the cooling chamber 2 spray and cool the material on the conveyor belt 7. After cooling, the material enters the drying chamber 3 and is blown away by the air outlets 16 in the drying chamber 3. The residual cooling water on the surface of the material is blown away and dried. The material after passing through the drying chamber 3 enters the next process from one side of the conveyor belt 7.

[0027] The specific embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cooling device for powder metallurgy products, characterized in that: The shell (1) includes a cooling chamber (2) and a drying chamber (3) inside. The shell (1) also has a conveying channel (12) inside to connect the cooling chamber (2) and the drying chamber (3). The shell (1) has an inlet (4) and an outlet (5) on both sides. A mounting frame (6) is fixedly connected to one side of the inlet (4) and the outlet (5). The mounting frame (6) has a conveyor belt (7) inside to drive the finished product to move. The cooling chamber (2) is equipped with a spraying mechanism to spray and cool the finished product on the surface of the conveyor belt (7). The top of the drying chamber (3) is fixedly connected to an air inlet pipe (8), which is connected to the interior of the drying chamber (3) to blow in air.

2. The cooling device for powder metallurgy products according to claim 1, characterized in that: The spraying mechanism includes an inlet pipe (9), a drain pipe (10), and a nozzle (11). The inlet pipe (9) is fixedly connected to the upper surface of the housing (1). The drain pipe (10) is fixedly connected to one side of the housing (1) and connected to the bottom of the cooling chamber (2). One end of the inlet pipe (9) that penetrates into the interior of the cooling chamber (2) is fixedly connected to the nozzle (11) to deliver cooling water to the nozzle (11).

3. A cooling device for powder metallurgy products according to claim 2, characterized in that: The conveying channel (12) is provided at an angle toward the cooling chamber (2) to prevent cooling water from entering the drying chamber (3).

4. A cooling device for powder metallurgy products according to claim 3, characterized in that: The feed inlet (4), the discharge outlet (5), and the two ends of the conveying channel (12) are all provided with a reversible baffle (13), and the opening direction of the baffle (13) is the same as the conveying direction of the conveyor belt (7).

5. A cooling device for powder metallurgy products according to claim 4, characterized in that: The surface of the conveyor belt (7) is fixedly connected with a guide plate (14) along the width direction of the conveyor belt (7) to reduce material slippage.

6. A cooling device for powder metallurgy products according to any one of claims 1-4, characterized in that: The inner wall of the housing (1) is provided with an air supply channel (15), and the inner wall of the drying chamber (3) is provided with an air outlet (16). One end of the air supply channel (15) is connected to the air inlet pipe (8) and the other end is connected to the air outlet (16) to transport the gas in the air inlet pipe (8) to the air outlet (16).

7. A cooling device for powder metallurgy products according to claim 6, characterized in that: A guide block (17) is provided at the connection position between the air intake pipe (8) and the air delivery channel (15). The air delivery channel (15) has an inverted mountain-shaped structure. The guide block (17) guides the air in the air intake pipe (8) to the air delivery channel (15).

8. A cooling device for powder metallurgy products according to claim 7, characterized in that: An exhaust port (18) is provided on one side of the shell (1) at the bottom of the drying chamber (3). The exhaust port (18) is connected to an external air extraction mechanism to accelerate the gas flow rate inside the drying chamber (3).

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