Cooling mechanism for precision investment casting of thin-wall product

Abstract

The utility model discloses a cooling mechanism for thin-wall product investment precision casting, which comprises a bottom plate, a support fixedly connected to the upper surface of the bottom plate, an electric telescopic rod fixedly connected to the upper surface of the support, a placing frame fixedly connected to the output end of the electric telescopic rod, and a cold water tank fixedly connected to the upper surface of the bottom plate. The lower surface of the cold water tank is fixedly connected with a water return tank through a water outlet pipe, the water return tank is fixedly connected with a water pump through a pipeline, the output end of the water pump is fixedly connected with a water return pipe, the upper surface of the bottom plate is fixedly connected with a fan, and the output end of the fan is fixedly connected with a cooling pipe through an air guide pipe. The side surfaces of the spray pipes are fixedly connected with air cooling plates. By means of the components, cooling water in the water return pipe can be used for cooling air sucked by the fan, cooling air is used for conducting primary cooling on the casting, the internal and external temperature difference of the casting can be reduced before water cooling, part of impurities are taken away by the cooling air, and the burden of a circulating water system is reduced.

Description

Technical Field

[0001] This utility model relates to the field of casting cooling technology, and in particular to a cooling mechanism for investment casting of thin-walled products. Background Technology

[0002] Existing cooling mechanisms for investment casting of thin-walled products directly immerse the casting in cooling water, using water cooling to cool the casting. Although a cooling tank and a storage chamber are used to allow the cooling water to be cooled in the storage chamber and then returned to the cooling tank, enabling the cooling water to be recycled, this can lead to a large temperature difference between the inside and outside of the casting, causing thermal stress and increasing the risk of casting cracking. For example, a casting cooling mechanism disclosed in Chinese Patent Application No. CN202420138750.4 uses a cooling medium in the cooling chamber to cool the cooling water in the storage chamber, and a circulation pump in the storage chamber sends the coolant back to the cooling tank through a circulation pipe to cool the casting. This can continuously lower the temperature of the coolant and ensure that the temperature of the coolant itself does not rise, improving the cooling effect on subsequent castings. However, using water cooling can cause the casting to cool too quickly, resulting in a large temperature difference between the inside and outside, which increases the risk of casting cracking, thus limiting its application. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a cooling mechanism for investment casting of thin-walled products. The mechanism uses a water pump and a return water pipe to allow the cooling water in the cold water tank to return to the cold water tank after cooling in the return water tank, thus realizing the function of cooling water recycling. The cooling water in the return water pipe is used to cool the air drawn in by the fan, and the cooled air is used to pre-cool the casting product. This avoids the problem of cracking caused by excessively fast cooling speed due to direct water cooling, which can lead to large temperature differences between the inside and outside of the casting. In addition, the cooling air will carry away some of the residual impurities on the surface of the casting, reducing the amount of impurities entering the cold water tank and making the water cooling system easier to clean.

[0004] This utility model also provides a cooling mechanism for investment casting of thin-walled products, comprising: a base plate, a bracket fixedly connected to the upper surface of the base plate, an electric telescopic rod fixedly connected to the upper surface of the bracket, and a placement rack fixedly connected to the output end of the electric telescopic rod;

[0005] A cold water tank is fixedly connected to the upper surface of the base plate. A return water tank is fixedly connected to the lower surface of the cold water tank via an outlet pipe. A water pump is fixedly connected to the return water tank via a pipe. The output end of the water pump is fixedly connected to a return water pipe. A fan is fixedly connected to the upper surface of the base plate. A cooling pipe is fixedly connected to the output end of the fan via an air guide pipe. A spray pipe is fixedly connected to the end of the cooling pipe away from the air guide pipe. An air-cooling plate is fixedly connected to the side surface of the spray pipe. Through these components, the cooling water in the return water pipe can be used to cool the air drawn in by the fan, and the cooling air can be used to perform a primary cooling of the casting. This reduces the temperature difference between the inside and outside of the casting before water cooling and allows the cooling air to carry away some impurities, reducing the burden on the circulating water system.

[0006] According to the present invention, a cooling mechanism for investment casting of thin-walled products is provided, wherein the side surface of the air-cooling plate is fixedly connected to a bracket, and the side surface of the cooling pipe is fixedly connected to the bracket. The air-cooling plate and the cooling pipe are fixed on the bracket for positioning.

[0007] According to the present invention, a cooling mechanism for investment casting of thin-walled products includes a return water pipe whose end away from the water pump is fixedly connected to a cold water tank, and the side surface of the return water pipe is fixedly connected to a cooling pipe. The water pump can transport water from the return water tank back to the cold water tank through the return water pipe, and use the return water pipe to cool the air in the cooling pipe.

[0008] According to the present invention, a cooling mechanism for investment casting of thin-walled products includes a cooling tank fixedly connected to the lower surface of the return water tank, and the lower surface of the cooling tank being fixedly connected to a base plate. The cooling tank contains a cooling medium to cool the cooling water in the return water tank, allowing the cooling water to be recycled.

[0009] According to the present invention, a cooling mechanism for investment casting of thin-walled products includes a water outlet pipe extending through the upper surface of the cooling tank into the interior of the cooling tank, and a water pump fixedly connected to the upper surface of the base plate. Water in the cold water tank is transported to the return water tank through the water outlet pipe for cooling.

[0010] According to the present invention, a cooling mechanism for investment casting of thin-walled products includes a conveying pipe fixedly connected to the side surface of the support, which is connected to an air-cooling plate during operation. The conveying pipe discharges the cooling gas flowing through the air-cooling plate and any impurities carried by the gas to a waste bin.

[0011] According to the present invention, a cooling mechanism for investment casting of thin-walled products includes a scrap bin slidably connected to the upper surface of the base plate, located below the conveying pipe. The scrap bin can recover impurities remaining on the casting product carried by the cooling gas.

[0012] According to the present invention, a cooling mechanism for investment casting of thin-walled products includes a filter screen slidably connected to the inner side wall of the cold water tank, and the side surface of the placement rack slidably connected to the air-cooling plate during operation. The filter screen separates impurities in the cold water tank, preventing them from entering the return water tank through the outlet pipe.

[0013] Beneficial effects:

[0014] Compared with existing technologies, the use of a water pump and return water pipe allows the cooling water in the cold water tank to return to the cold water tank after cooling in the return water tank, realizing the function of cooling water recycling. The cooling water in the return water pipe is used to cool the air drawn in by the fan, and the cooled air is used to pre-cool the casting product. This avoids the problem of cracking caused by excessively fast cooling speed due to direct water cooling, which can lead to large temperature differences between the inside and outside of the casting. In addition, the cooling air will carry away some residual impurities on the surface of the casting, reducing the amount of impurities entering the cold water tank and making the water cooling system easier to clean. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is an overall structural diagram of the cooling mechanism for investment casting of thin-walled products according to this utility model;

[0017] Figure 2 This is a cross-sectional view of the cooling mechanism for investment casting of thin-walled products according to this utility model.

[0018] Figure 3 This utility model relates to a cooling mechanism for investment casting of thin-walled products. Figure 2 Partial structural diagram at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the cooling plate and placement rack of the cooling mechanism for investment casting of thin-walled products according to this utility model.

[0020] Legend:

[0021] 1. Base plate; 2. Cooling tank; 3. Support frame; 4. Waste bin; 5. Water pump; 6. Fan; 7. Air duct; 8. Cooling pipe; 9. Spray nozzle; 10. Conveying pipe; 11. Cold water tank; 12. Filter screen; 13. Air-cooled plate; 14. Placement rack; 15. Electric telescopic rod; 16. Return water pipe; 17. Return water tank; 18. Water outlet pipe. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4 This utility model provides a cooling mechanism for investment casting of thin-walled products, which includes: a base plate 1, a bracket 3 fixedly connected to the upper surface of the base plate 1, an electric telescopic rod 15 fixedly connected to the upper surface of the bracket 3, and a placement rack 14 fixedly connected to the output end of the electric telescopic rod 15.

[0024] Specifically, before use, the casting product that needs to be cooled is placed on the placement rack 14. The casting product and the placement rack 14 are moved vertically by the electric telescopic rod 15 fixed on the bracket 3, so that the casting product can be cooled by the cooling air through the air cooling plate 13 first, and then placed in the cold water tank 11 for secondary cooling by the cooling water.

[0025] A cold water tank 11 is fixedly connected to the upper surface of the base plate 1. A return water tank 17 is fixedly connected to the lower surface of the cold water tank 11 through a water outlet pipe 18. The water outlet pipe 18 extends through the upper surface of the cooling tank 2 and into the interior of the cooling tank 2. A water pump 5 is fixedly connected to the return water tank 17 through a pipe. The upper surface of the base plate 1 is fixedly connected to the water pump 5. A return water pipe 16 is fixedly connected to the output end of the water pump 5. The end of the return water pipe 16 away from the water pump 5 is fixedly connected to the cold water tank 11. The side surface of the return water pipe 16 is fixedly connected to the cooling pipe 8. A fan 6 is fixedly connected to the upper surface of the base plate 1. A cooling pipe 8 is fixedly connected to the output end of the fan 6 through a duct 7. The side surface of the cooling pipe 8 is fixedly connected to the bracket 3. A spray pipe 9 is fixedly connected to the end of the cooling pipe 8 away from the duct 7. An air-cooled plate 13 is fixedly connected to the side surface of the spray pipe 9. The side surface of the air-cooled plate 13 is fixedly connected to the bracket 3.

[0026] Specifically, the cold water tank 11 is filled with cooling water and is connected to the return water tank 17 through the return water pipe 16 at the lower end, so that the cooling water can enter the return water tank 17 and be cooled by the cooling medium entering the cooling tank 2. The water pump 5 can use the pipe and the return water pipe 16 to send the cooled water in the return water tank 17 back to the cold water tank 11 so that the cooling water can be recycled. The fan 6 draws in air through the input end and discharges it into the cooling pipe 8 through the air guide pipe 7 connected to the output end. At the same time, the return water pipe 16 will cool the air in the cooling pipe 8 and then discharge it into the spray pipe 9. When the placement rack 14 is in contact with the air-cooled plate 13, the cooling air will be sprayed onto the casting product through the spray pipe 9, cooling the casting product and blowing some of the impurities remaining on the product surface into the conveying pipe 10. Then the placement rack 14 will continue to move down until the product is immersed in the cooling water in the cold water tank 11 for secondary cooling, and after cooling is completed, the product is removed from the placement rack 14.

[0027] A cooling tank 2 is fixedly connected to the lower surface of the return water tank 17. The lower surface of the cooling tank 2 is fixedly connected to the base plate 1. A conveying pipe 10 is fixedly connected to the side surface of the bracket 3. The conveying pipe 10 is connected to the air-cooled plate 13 during operation. A waste bin 4 is slidably connected to the upper surface of the base plate 1. The waste bin 4 is located below the conveying pipe 10. A filter screen 12 is slidably connected to the inner side wall of the cold water tank 11. The side surface of the placement rack 14 is slidably connected to the air-cooled plate 13 during operation.

[0028] Specifically, the cooling tank 2 is equipped with an inlet and an outlet, allowing the cooling medium to flow through the cooling tank 2 to cool the cooling water in the return water tank 17. The support 3 is equipped with a conveying pipe 10, which is connected to the air-cooling plate 13 installed on the support 3. When the cooling gas sprayed from the nozzle 9, it will carry some of the impurities remaining on the product surface into the conveying pipe 10, and then be sent to the waste bin 4 by the conveying pipe 10, so that the waste bin 4 can store and recycle the impurities. The cold water tank 11 is equipped with a filter screen 12, which can isolate the impurities that fall into the cold water tank 11 and prevent the impurities from entering the return water tank 17. After use, the air-cooling plate 13 is removed and the impurities are cleaned.

[0029] Working principle: Before use, place the air-cooled plate 13 and filter screen 12 in the designated positions, then place the casting product on the placement rack 14. Use the electric telescopic rod 15 to move the placement rack 14. When passing the air-cooled plate 13, the nozzle 9 will spray the cooling gas, which is drawn in by the fan 6 and sent to the cooling pipe 8 and cooled by the cooling water in the return water pipe 16, onto the casting product for primary cooling. At the same time, the cooling air will carry some of the impurities remaining on the product surface and send them to the waste bin 4 through the conveying pipe 10. After that, the electric telescopic rod 15 will move the placement rack 14 down again and into the cold water tank 11. The cooling water in the cold water tank 11 will perform secondary cooling on the product, and then send it to the return water tank 17 through the outlet pipe 18 to be cooled by the cooling medium that entered the cooling box 2. Then, the water pump 5 and the return water pipe 16 will send it back to the cold water tank 11 to realize the recycling of cooling water. During the cooling process, the impurities adsorbed on the product surface will fall onto the filter screen 12 in the cold water tank 11, and the filter screen 12 can be removed and the impurities cleaned after cooling.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cooling mechanism for thin-walled product investment precision casting, characterized by, Include: The upper surface of the bottom plate (1) is fixedly connected with the support (3), the upper surface of the support (3) is fixedly connected with the electric telescopic rod (15), and the output end of the electric telescopic rod (15) is fixedly connected with the placing rack (14); The upper surface of the bottom plate (1) is fixedly connected with the cold water tank (11), the lower surface of the cold water tank (11) is fixedly connected with the backwater tank (17) through the water outlet pipe (18), the backwater tank (17) is fixedly connected with the water pump (5) through the pipeline, the output end of the water pump (5) is fixedly connected with the backwater pipe (16), the upper surface of the bottom plate (1) is fixedly connected with the fan (6), the output end of the fan (6) is fixedly connected with the cooling pipe (8) through the air duct (7), one end of the cooling pipe (8) away from the air duct (7) is fixedly connected with the spray pipe (9), and the side surface of the spray pipe (9) is fixedly connected with the air cooling plate (13).

2. A cooling mechanism for thin-walled precision investment casting according to claim 1, wherein The side surface of the air cooling plate (13) is fixedly connected with the support (3), and the side surface of the cooling pipe (8) is fixedly connected with the support (3).

3. A cooling mechanism for thin-walled precision investment casting according to claim 1, wherein One end of the backwater pipe (16) away from the water pump (5) is fixedly connected with the cold water tank (11), and the side surface of the backwater pipe (16) is fixedly connected with the cooling pipe (8).

4. A cooling mechanism for thin-walled precision investment casting according to claim 1, wherein The lower surface of the backwater tank (17) is fixedly connected with the cooling tank (2), and the lower surface of the cooling tank (2) is fixedly connected with the bottom plate (1).

5. A cooling mechanism for thin-walled precision investment casting according to claim 1, wherein The water outlet pipe (18) extends through the upper surface of the cooling tank (2) to the inside of the cooling tank (2), and the upper surface of the bottom plate (1) is fixedly connected with the water pump (5).

6. A cooling mechanism for thin-walled precision investment casting according to claim 1, wherein The side surface of the support (3) is fixedly connected with the conveying pipe (10), and the conveying pipe (10) is communicated with the air cooling plate (13) in working.

7. A cooling mechanism for thin-walled precision investment casting according to claim 1, wherein The upper surface of the bottom plate (1) is slidably connected with the waste tank (4), and the waste tank (4) is located below the conveying pipe (10).

8. A cooling mechanism for thin-walled precision investment casting according to claim 1, wherein The side inner wall of the cold water tank (11) is slidably connected with the filter screen (12), and the side surface of the placing rack (14) is slidably connected with the air cooling plate (13) in working.

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