Rapid cooling device for metal workpiece

Abstract

The utility model discloses a rapid cooling device for metal workpieces, which belongs to the field of cooling devices and comprises a cooling chamber and a sealing chamber door, a grid storage rack is arranged inside the cooling chamber, and a rapid cooling mechanism is arranged outside the cooling chamber. The rapid cooling mechanism comprises a connecting pipe, a refrigeration shell, a surface air cooler, an air supply pipe, an air supply fan, an exhaust pipe, an exhaust fan and a U-shaped pipe, the connecting pipe and the exhaust pipe are fixedly connected to the outer side ends of the air inlet cover and the exhaust cover on the two sides of the cooling chamber correspondingly, and a first electric air valve is fixedly connected between the connecting pipe and the refrigeration shell. Air is fed into the refrigeration shell through the air supply fan and enters the cooling chamber after being cooled by the surface air cooler, heat of a metal workpiece can be rapidly taken away, compared with traditional natural air cooling, the problem that the temperature cannot be reduced to the set temperature in summer can be effectively solved, workpiece cooling can be rapidly achieved even in the high-temperature environment, the production efficiency is greatly improved, and the production cost is reduced. And the workpiece can enter the next process as soon as possible.

Description

Technical Field

[0001] This utility model relates to the field of cooling devices, and in particular to a rapid cooling device for metal workpieces. Background Technology

[0002] In the automotive painting production process, the rapid cooling of workpieces is crucial, directly impacting production efficiency and product quality. Currently, forced cooling systems are key equipment for achieving workpiece cooling, with natural air cooling being one of the more common methods.

[0003] In existing technologies, natural air cooling primarily relies on natural air convection to remove heat from the workpiece. Under suitable ambient temperature conditions, it can achieve a certain degree of workpiece cooling. However, this cooling method has significant limitations. In summer, when ambient temperatures are generally high, natural air cooling struggles to lower the workpiece temperature to the set temperature required by the production process. This is because in high-temperature environments, the temperature difference between the air and the workpiece is small, resulting in low heat exchange efficiency and failing to meet the demand for rapid and effective cooling.

[0004] In winter, when the outside temperature is below zero, natural air cooling will cause condensation. As the surface temperature of the workpiece drops rapidly during the air cooling process, the water vapor in the surrounding air is very easy to condense into water droplets on the surface of the workpiece. These condensates will not only affect the quality of the coating on the workpiece surface, causing defects and reduced adhesion, but may also further corrode the workpiece and reduce its service life.

[0005] In addition, natural air cooling has drawbacks such as imprecise temperature control and uneven cooling rate. This results in inconsistent cooling of different parts of the workpiece, leading to uneven stress inside the workpiece and causing quality problems such as deformation and cracking, which seriously affects the stability and reliability of automotive painted workpieces. Utility Model Content

[0006] The main objective of this invention is to provide a rapid cooling device for metal workpieces, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A rapid cooling device for metal workpieces includes a cooling chamber and a sealed door. The interior of the cooling chamber is equipped with a grid shelf, and the exterior of the cooling chamber is equipped with a rapid cooling mechanism. The rapid cooling mechanism includes a connecting pipe, a refrigeration shell, a surface cooler, an air supply pipe, an air supply fan, an exhaust pipe, an exhaust fan, and a U-shaped pipe. The outer ends of the air inlet hood and the exhaust hood on both sides of the cooling chamber are respectively fixedly connected to the connecting pipe and the refrigeration shell. A first electric air valve is fixedly connected between the connecting pipe and the refrigeration shell. The air supply fan is fixedly connected between the air supply pipe and the refrigeration shell, and the surface cooler is fixedly connected inside the refrigeration shell. The exhaust fan is fixedly connected to the right end of the exhaust pipe, and a U-shaped pipe is fixedly connected between the exhaust pipe and the air supply pipe. A filter mechanism is also provided at the left end of the air supply fan.

[0009] Furthermore, an air intake hood and an exhaust hood are fixedly installed on the left and right side walls of the cooling chamber, respectively, and a first temperature sensor is fixedly installed on the top surface of the cooling chamber.

[0010] Furthermore, the connecting pipe is fixedly installed at the left end of the air intake hood, and a second temperature sensor is fixedly installed on the outer wall of the connecting pipe. A first electric air valve is also fixedly installed between the cooling shell and the connecting pipe, and a surface cooler is fixedly installed inside the cooling shell. An air supply pipe is fixedly installed between the air supply fan and the cooling shell.

[0011] Furthermore, a second electric air valve is fixedly installed between the exhaust pipe and the exhaust hood, and an exhaust fan is fixedly installed at the right end of the exhaust pipe. A third temperature sensor is fixedly installed on the outer wall of the exhaust pipe.

[0012] Furthermore, the outer walls of the air supply pipe and the air exhaust pipe are respectively fixedly installed with a connected air inlet branch pipe and an air outlet branch pipe, and a U-shaped pipe is fixedly installed between the air inlet branch pipe and the air outlet branch pipe. A third electric air valve is also fixedly installed between the U-shaped pipe and the air inlet branch pipe.

[0013] Furthermore, the filtration mechanism includes a filter tube, a filter screen, a rotating shaft, an impeller, a cleaning plate, and a brush. The filter tube is fixedly installed at the left end of the blower, and a filter ring is fixedly installed inside the filter tube. A cross plate is fixedly installed inside the filter ring, and a filter screen is fixedly installed between the cross plate and the filter ring. An installation hole is opened on the central side wall of the cross plate, and a bearing is fixedly installed in the hole. The rotating shaft and the bearing are inserted and fixedly installed together, and an impeller is fixedly installed at the right end of the rotating shaft. A cleaning plate is fixedly installed at the left end of the rotating shaft, and a brush that is in close contact with the filter screen is fixedly installed on the right side wall of the cleaning plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this utility model, the rapid cooling mechanism sends air into the cooling shell through a blower. After being cooled by the surface cooler, the air enters the cooling chamber, which can quickly remove the heat from the metal workpiece. Compared with traditional natural air cooling, it can effectively solve the problem of not being able to cool down to the set temperature in summer. Even in high-temperature environments, it can quickly cool down the workpiece, greatly improving production efficiency and allowing the workpiece to enter the next process as soon as possible.

[0016] The cooling chamber, connecting pipe, and exhaust pipe are respectively equipped with a first temperature sensor, a second temperature sensor, and a third temperature sensor, which can monitor the temperature of each part in real time. In conjunction with the first electric air valve, the second electric air valve, and the third electric air valve, the air volume and air direction can be precisely adjusted according to the actual temperature to achieve precise temperature control of the cooling process, ensuring that the workpiece cools down evenly and reaches the temperature required by the process, thus avoiding workpiece quality problems caused by inaccurate temperature control.

[0017] During winter operation, by properly adjusting each electric air valve and using a U-shaped pipe to mix some of the discharged hot air with cold air, the air temperature entering the cooling chamber is regulated, avoiding condensation caused by cold air directly contacting the workpiece. This effectively protects the coating quality of the workpiece surface, prevents coating defects and reduced adhesion, and also prevents the workpiece from being corroded, thus extending the service life of the workpiece.

[0018] Meanwhile, the filter mechanism can effectively filter impurities in the air entering the cooling system, ensuring the cleanliness of the cooling air and preventing impurities from adhering to the workpiece surface and affecting the coating quality. Moreover, when the airflow drives the impeller to rotate, it will cause the cleaning plate and brush to rotate synchronously through the rotating shaft, automatically cleaning the filter screen, preventing filter screen blockage, ensuring filtration effect and air circulation efficiency, and reducing manual maintenance costs and downtime. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the cooling chamber of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of the rapid cooling mechanism of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of the cooling shell of this utility model;

[0023] Figure 5 This is a structurally disassembled schematic diagram of the filtration mechanism of this utility model.

[0024] In the diagram: 1. Cooling chamber; 2. Sealed chamber door; 3. Grid shelf; 4. Rapid cooling mechanism; 5. Air inlet hood; 6. Exhaust hood; 7. First temperature sensor; 8. Connecting pipe; 9. Second temperature sensor; 10. First electric air valve; 11. Refrigeration shell; 12. Surface cooler; 13. Air supply duct; 14. Air inlet branch duct; 15. Air supply fan; 16. Filter mechanism; 17. Second electric air valve; 18. Exhaust duct; 19. Exhaust fan; 20. Third temperature sensor; 21. Air outlet branch duct; 22. Third electric air valve; 23. U-shaped pipe; 24. Filter pipe; 25. Filter ring; 26. Cross plate; 27. Filter screen; 28. Mounting hole; 29. ​​Bearing; 30. Rotating shaft; 31. Impeller; 32. Cleaning plate; 33. Brush. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 - Figure 5 As shown, a rapid cooling device for metal workpieces includes a cooling chamber 1 and a sealed door 2. The interior of the cooling chamber 1 is provided with a grid shelf 3, and the exterior of the cooling chamber 1 is provided with a rapid cooling mechanism 4. The rapid cooling mechanism 4 includes a connecting pipe 8, a cooling shell 11, a surface cooler 12, an air supply pipe 13, an air supply fan 15, an exhaust pipe 18, an exhaust fan 19, and a U-shaped pipe 23. The outer ends of the air inlet hood 5 and the exhaust hood 6 on both sides of the cooling chamber 1 are respectively fixedly connected to the connecting pipe 8 and the cooling shell 11. A first electric air valve 10 is fixedly connected between the connecting pipe 8 and the cooling shell 11. The air supply fan 15 is fixedly connected to the cooling shell 11 and the air supply pipe 13. The surface cooler 12 is fixedly connected inside the cooling shell 11. The exhaust fan 19 is fixedly connected to the right end of the exhaust pipe 18 and the exhaust pipe 18 and the air supply pipe 13 are fixedly connected to the U-shaped pipe 23. The left end of the air supply fan 15 is also provided with a filter mechanism 16.

[0028] like Figure 2As shown, an air inlet hood 5 and an exhaust hood 6 are fixedly installed on the left and right side walls of the cooling chamber 1, respectively. The air inlet hood 5 and the exhaust hood 6 ensure effective air circulation in the cooling chamber 1 and form a stable air convection, thereby efficiently cooling the metal workpiece. A first temperature sensor 7 is fixedly installed on the top surface of the cooling chamber 1. The real-time temperature data provided by the first temperature sensor 7 allows the operator or control system to understand the temperature status in the cooling chamber 1 in a timely manner and adjust the operating parameters of the rapid cooling mechanism 4 as needed to ensure that the workpiece is cooled in a suitable temperature environment, thereby improving the cooling quality and effect.

[0029] like Figure 3 and Figure 4 As shown, the connecting pipe 8 is fixedly installed at the left end of the air inlet hood 5, and a second temperature sensor 9 is fixedly installed on the outer wall of the connecting pipe 8. A first electric air valve 10 is also fixedly installed between the cooling shell 11 and the connecting pipe 8, and a surface cooler 12 is fixedly installed inside the cooling shell 11. An air supply pipe 13 is fixedly installed between the air supply fan 15 and the cooling shell 11. The surface cooler 12 can effectively cool the air and provide low-temperature air to the cooling chamber 1, thereby enhancing the cooling capacity of the metal workpiece. The cooperation of the second temperature sensor 9 and the first electric air valve 10 enables precise control of the air temperature and air volume entering the cooling chamber 1. The cold air entering the cooling chamber 1 can be precisely adjusted according to actual needs to avoid affecting the cooling effect due to excessively high air temperature or unsuitable air volume, ensuring the stability and controllability of the cooling process, and improving the uniformity and quality of workpiece cooling.

[0030] like Figure 3 As shown, a second electric air valve 17 is fixedly installed between the exhaust pipe 18 and the exhaust hood 6, and an exhaust fan 19 is fixedly installed at the right end of the exhaust pipe 18. A third temperature sensor 20 is fixedly installed on the outer wall of the exhaust pipe 18. The exhaust fan 19 ensures the timely discharge of hot air in the cooling chamber 1, maintains the normal circulation and convection of air in the cooling chamber 1, and ensures the continuous operation of the cooling process. The coordinated operation of the third temperature sensor 20 and the second electric air valve 17 can reasonably adjust the exhaust volume according to the change of air temperature in the exhaust pipe 18, which helps to improve the operating efficiency and energy utilization efficiency of the cooling system.

[0031] like Figure 3As shown, the outer walls of the air supply pipe 13 and the air exhaust pipe 18 are respectively fixedly installed with a connecting air inlet branch pipe 14 and an air outlet branch pipe 21, and a U-shaped pipe 23 is fixedly installed between the air inlet branch pipe 14 and the air outlet branch pipe 21. A third electric air valve 22 is also fixedly installed between the U-shaped pipe 23 and the air inlet branch pipe 14. By mixing some hot air with cold air, it can effectively avoid the phenomenon of condensation on the surface of the workpiece caused by the direct entry of cold air into the cooling chamber 1. It can precisely regulate the air temperature entering the cooling chamber 1, protect the coating quality of the workpiece surface, prevent the coating from having defects and reduced adhesion, and at the same time prevent the workpiece from being corroded by condensate, extend the service life of the workpiece. It can also be flexibly adjusted according to the actual ambient temperature and the cooling requirements of the workpiece, improving the adaptability and practicality of the cooling device.

[0032] like Figure 3 and Figure 5 As shown, the filtration mechanism 16 includes a filter tube 24, a filter screen 27, a rotating shaft 30, an impeller 31, a cleaning plate 32, and a brush 33. The filter tube 24 is fixedly installed at the left end of the blower 15, and a filter ring 25 is fixedly installed inside the filter tube 24. A cross plate 26 is fixedly installed inside the filter ring 25, and a filter screen 27 is fixedly installed between the cross plate 26 and the filter ring 25. A mounting hole 28 is opened on the central side wall of the cross plate 26, and a bearing 29 is fixedly installed in the mounting hole 28. The rotating shaft 30 is inserted and fixedly installed with the bearing 29. An impeller 31 is fixedly installed at the right end of the rotating shaft 30, and a cleaning plate 33 is fixedly installed at the left end of the rotating shaft 30. 2. Furthermore, a brush 33 is fixedly installed on the right side wall of the cleaning plate 32, which is in close contact with the filter screen 27. The filter screen 27 can effectively filter impurities in the air entering the cooling system, ensuring the cleanliness of the cooling air and preventing impurities from adhering to the surface of the workpiece, thereby affecting the coating quality of the workpiece. This is achieved through the coordinated work of the impeller 31, the rotating shaft 30, the cleaning plate 32, and the brush 33. There is no need for frequent manual cleaning of the filter screen 27, which reduces manual maintenance costs and downtime. At the same time, the automatic cleaning function ensures that the filter screen 27 is unobstructed, maintains good air circulation efficiency, ensures that the cooling system can operate continuously and stably, and improves the reliability and working efficiency of the cooling device.

[0033] The specific principle behind the rapid cooling mechanism 4 for rapidly cooling metal workpieces is as follows:

[0034] After placing the metal workpiece to be cooled on the grid shelf 3 inside the cooling chamber 1, the sealing chamber door 2 is closed to seal the cooling chamber 1. The blower 15 is turned on to draw outside air into the air supply pipe 13. When the outside air enters the air supply pipe 13, it passes through the filter pipe 24 installed at the left end of the blower 15. At this time, the filter ring 25 installed inside the filter pipe 24 filters dust and other impurities from the outside air through the internal filter screen 27, preventing impurities from entering the cooling chamber 1 with the air and adhering to the surface of the workpiece, thus affecting the subsequent coating quality of the workpiece. After the air enters the filter pipe 24, the airflow will drive the impeller 31 to rotate. The impeller 31 will drive the shaft 30 to rotate in the bearing 29 installed in the mounting hole 28 on the side wall of the cross plate 26. At this time, the shaft 30 will drive the cleaning plate 32 to rotate. During the rotation, the cleaning plate 32 will clean the filter screen 27 through the brush 33 to prevent the filter screen 27 from being blocked by impurities. To improve the air supply effect, outside air enters the air supply duct 13 and passes through the cooling shell 11. Then, the first electric air valve 10 is opened, allowing outside air to enter the cooling chamber 1 through the connecting pipe 8 and the air inlet hood 5, thus achieving air cooling of the metal workpieces in the cooling chamber 1. At the same time, the second electric air valve 17 and the exhaust fan 19 are opened. The exhaust fan 19 draws the heated air in the cooling chamber 1 through the exhaust hood 6, through the second electric air valve 17, into the exhaust duct 18, and then exhausts it to the external environment, so as to achieve normal air circulation and convection in the cooling chamber 1. When the first temperature sensor 7 and the third temperature sensor 20 detect that the temperature in the cooling chamber 1 is too high or the temperature of the exhaust gas is too high, the opening of the first electric air valve 10 and the second electric air valve 17 can be adjusted. By increasing the opening of the first electric air valve 10 and the second electric air valve 17, the air intake and exhaust volume in the cooling chamber 1 can be increased, so as to avoid the cooling effect being affected by unsuitable air volume.

[0035] When the second temperature sensor 9 on the outer wall of the summer connecting pipe 8 detects that the temperature of the air sent into the cooling chamber 1 is greater than the preset value and it is difficult to effectively cool the metal workpiece in the cooling chamber 1, the surface cooler 12 installed in the cooling shell 11 can be turned on. After the air in the air supply pipe 13 enters the cooling shell 11 and passes through the surface cooler 12, the refrigerant in the surface cooler 12 will take away the heat in the air according to the principle of heat exchange, so as to achieve the purpose of cooling the air and making the air entering the cooling chamber 1 low temperature cold air, thereby enhancing the cooling capacity of the metal workpiece;

[0036] When the second temperature sensor 9 on the outer wall of the winter connecting pipe 8 detects that the temperature of the air supplied to the cooling chamber 1 is lower than the preset value, the surface cooler 12 can be turned on to cool the air without turning it on. The metal workpiece in the cooling chamber 1 can be cooled directly by the outside cold air. Since the cold air in winter is prone to condensation on the metal workpiece due to the high water vapor or moisture content, the third electric air valve 22 can be turned on. When the outside cold air enters the cooling chamber 1 through the air supply pipe 13, under the action of continuous air supply, the U-shaped pipe 23 will be suctioned through the air inlet branch pipe 14. The exhaust pipe 18 will draw some of the hot air out through the air outlet branch pipe 21 into the U-shaped pipe 23, and then into the air supply pipe 13 to mix with the cold air before entering the cooling chamber 1 to cool the metal workpiece. By mixing some of the hot air with the cold air, the temperature of the air entering the cooling chamber 1 can be precisely adjusted, and the workpiece can be prevented from being corroded by condensation.

[0037] During the continuous cooling process of the metal workpiece, the temperature of the metal workpiece and the exhaust air in the cooling chamber 1 are monitored in real time by the first temperature sensor 7 and the third temperature sensor 20. When the temperature is detected to be lower than the preset value, the opening of the first electric air valve 10, the second electric air valve 17 or the third electric air valve 22 can be reduced, which helps to improve the operating efficiency and energy utilization efficiency of the cooling system and save energy.

[0038] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0039] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for rapid cooling of metal workpieces, comprising a cooling chamber (1) and a sealed chamber door (2), the interior of the cooling chamber (1) being provided with a grid shelf (3), characterized in that: The outside of the cooling chamber (1) is provided with a quick cooling mechanism (4), and the quick cooling mechanism (4) comprises a connecting pipe (8), a refrigeration shell (11), a surface cooler (12), a supply air pipe (13), a supply air fan (15), an exhaust air pipe (18), an exhaust air fan (19) and a U-shaped pipe (23), the outside end of the air inlet cover (5) and the air outlet cover (6) on both sides of the cooling chamber (1) is respectively fixedly connected with the connecting pipe (8) and the exhaust air pipe (18), and the connecting pipe (8) and the refrigeration shell (11) are fixedly connected with the first electric air valve (10), the supply air fan (15) and the refrigeration shell (11) are fixedly connected with the supply air pipe (13), and the surface cooler (12) is fixedly connected in the refrigeration shell (11), the exhaust air fan (19) is fixedly connected at the right end of the exhaust air pipe (18), and the exhaust air pipe (18) and the supply air pipe (13) are fixedly connected with the U-shaped pipe (23), and the left end of the supply air fan (15) is further provided with a filtering mechanism (16).

2. A device for rapid cooling of a metal workpiece according to claim 1, characterized in that: The left and right side walls of the cooling chamber (1) are respectively fixedly installed with the air inlet cover (5) and the air outlet cover (6) in communication, and the top surface of the cooling chamber (1) is fixedly installed with the first temperature sensor (7).

3. A device for rapid cooling of a metal workpiece according to claim 2, wherein: The connecting pipe (8) is fixedly installed at the left end of the air inlet cover (5), and the second temperature sensor (9) is fixedly installed on the outer wall of the connecting pipe (8), the first electric air valve (10) is further fixedly installed between the refrigeration shell (11) and the connecting pipe (8), and the surface cooler (12) is fixedly installed in the refrigeration shell (11), the supply air pipe (13) is fixedly installed between the supply air fan (15) and the refrigeration shell (11).

4. A device for rapid cooling of a metal workpiece according to claim 3, wherein: The second electric air valve (17) is fixedly installed between the exhaust air pipe (18) and the air outlet cover (6), and the exhaust air fan (19) is fixedly installed at the right end of the exhaust air pipe (18), and the third temperature sensor (20) is fixedly installed on the outer wall of the exhaust air pipe (18).

5. A device for rapid cooling of a metal workpiece according to claim 4, wherein: The outer walls of the supply air pipe (13) and the exhaust air pipe (18) are further respectively fixedly installed with the air inlet branch pipe (14) and the air outlet branch pipe (21) in communication, and the U-shaped pipe (23) is fixedly installed between the air inlet branch pipe (14) and the air outlet branch pipe (21), and the third electric air valve (22) is further fixedly installed between the U-shaped pipe (23) and the air inlet branch pipe (14).

6. A device for rapid cooling of a metal workpiece according to claim 5, wherein: Said filtering mechanism (16) includes filter pipe (24), filter screen (27), rotating shaft (30), impeller (31), cleaning plate (32) and brush (33), the filter pipe (24) is fixedly installed at the left end of the air supply fan (15), and the inside of the filter pipe (24) is fixedly installed with filter ring (25), the ring of the filter ring (25) is fixedly installed with cross plate (26), and the filter screen (27) is also fixedly installed between the cross plate (26) and the filter ring (25), the center side wall of the cross plate (26) is provided with mounting hole (28), and the bearing (29) is fixedly installed in the hole of the mounting hole (28), the rotating shaft (30) is fixedly installed with the bearing (29) and is inserted together, and the right end of the rotating shaft (30) is fixedly installed with the impeller (31), the left end of the rotating shaft (30) is fixedly installed with the cleaning plate (32), and the right side wall of the cleaning plate (32) is fixedly installed with the brush (33) abutting against the filter screen (27).

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