Cooling device for low-temperature ductile iron casting

Abstract

A low-temperature spheroidal graphite iron casting heat dissipation device relates to the field of spheroidal graphite iron casting casting and comprises an outer barrel, an inner barrel, bearing plates, supporting blocks and a cover, the outer barrel and the inner barrel are coaxially arranged, the bearing plates are transversely arranged on the outer barrel and the inner barrel, a temperature adjusting cavity is formed between the outer barrel and the inner barrel, sand is filled in the inner barrel, and a through hole is formed in the center of each bearing plate. Supporting blocks are distributed on the two sides of the penetrating hole, a workpiece is placed on the supporting blocks, and covers are arranged at the upper ends of the outer barrel and the inner barrel. The sand is filled in the inner barrel, so that the temperature of a workpiece is prevented from being reduced too fast, and the probability of cold cracking of the workpiece is reduced; by arranging the temperature adjusting rod, the temperature of the sand can be controlled by conducting the temperature; and the fan is arranged in the temperature adjusting cavity, sand is cooled through airflow, and the temperature of the workpiece is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ductile iron casting, and in particular to a heat dissipation device for low-temperature ductile iron casting. Background Technology

[0002] After casting, ductile iron castings need to be cooled to eliminate casting stress, improve machinability, and enhance plasticity and toughness. To avoid defects such as deformation and cracks caused by excessive cooling after casting, sufficient cooling time should be ensured. A common method for controlling cooling is to quickly place the workpiece in a sand pit after unpacking for slow cooling. However, traditional sand pits are not convenient for temperature control of the sand inside, making it difficult to precisely control the heat dissipation of the workpiece. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model discloses a heat dissipation device for low-temperature ductile iron castings. This utility model achieves the purpose of heat dissipation for ductile iron castings by setting a bearing plate and a cover on the outer barrel and the inner barrel, and setting a support block on the bearing plate.

[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0005] A heat dissipation device for low-temperature ductile iron castings includes an outer barrel, an inner barrel, a support plate, support blocks, and a lid. The outer barrel and the inner barrel are coaxially arranged, and the support plate is arranged horizontally on the outer barrel and the inner barrel. A temperature regulating cavity is provided between the outer barrel and the inner barrel. The inner barrel is filled with sand. The support plate has a perforation in the center, and support blocks are distributed on both sides of the perforation. The workpiece is placed on the support blocks, and the lid is provided at the top of the outer barrel and the inner barrel.

[0006] The outer barrel has a through groove on its side, which runs through the outer barrel and the inner barrel, and is located below the support plate.

[0007] The cover has countersunk holes, and each countersunk hole is equipped with a longitudinally arranged temperature regulating rod. The lower end of the temperature regulating rod is placed in the sand of the inner barrel. The temperature regulating rod is equipped with a sealing cap that is coaxially arranged and placed in the countersunk hole.

[0008] The lower end of the support plate is provided with a baffle, which is located below the perforation. One end of the baffle is hinged to the lower end face of the support plate, and the other end of the baffle is provided with a horizontally arranged limiting rod. The limiting rod is rotatably connected to the lower end face of the support plate, and the upper end face of one end of the limiting rod abuts against the lower end face of the baffle.

[0009] The lower end face of the bearing plate is provided with reinforcing ribs, and a strut is provided between two adjacent reinforcing ribs. The upper end of the strut is connected to the lower end face of the bearing plate.

[0010] Fans are distributed inside the temperature control cavity, and the fans are mounted on the support plate, passing through the support plate. The fans are electrically connected to an external controller.

[0011] The present invention relates to a low-temperature ductile iron casting heat dissipation device. This invention is highly practical and very convenient to use. By filling the inner barrel with sand, the temperature of the workpiece is prevented from dropping too quickly, reducing the probability of cold cracking. By setting a temperature regulating rod, the temperature of the sand can be controlled by conducting temperature. By setting a fan in the temperature regulating chamber, the sand is cooled by airflow, thereby reducing the temperature of the workpiece. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a top view of the outer and inner tubs of this utility model;

[0014] Figure 3 This is a cross-sectional view of the present invention;

[0015] Figure 4 This is a bottom view of the outer and inner tubs of this utility model;

[0016] In the diagram: 1. Outer tub; 2. Inner tub; 3. Through groove; 4. Lid; 5. Temperature control rod; 6. Sealing cover; 7. Temperature control chamber; 8. Fan; 9. Support plate; 10. Perforation; 11. Support block; 12. Baffle; 13. Limiting rod; 14. Support rod; 15. Reinforcing rib. Detailed Implementation

[0017] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0018] Combined with appendix Figures 1-4 A heat dissipation device for low-temperature ductile iron castings includes an outer barrel 1, an inner barrel 2, a support plate 9, support blocks 11, and a lid 4. The outer barrel 1 and the inner barrel 2 are coaxially arranged, and the support plate 9 is arranged horizontally on the outer barrel 1 and the inner barrel 2. A temperature regulating cavity 7 is provided between the outer barrel 1 and the inner barrel 2. The inner barrel 2 is filled with sand. The support plate 9 has a through hole 10 in the center, and support blocks 11 are distributed on both sides of the through hole 10. The workpiece is placed on the support blocks 11. The lid 4 is provided at the upper end of the outer barrel 1 and the inner barrel 2. Covering the lid 4 can keep the sand in the inner barrel 2 warm and cool it slowly.

[0019] The outer barrel 1 has a through groove 3 on its side, which passes through the outer barrel 1 and the inner barrel 2. The through groove 3 is located below the support plate 9, and the sand falling from the inner barrel 2 is collected through the through groove 3.

[0020] The cover 4 has countersunk holes, and each countersunk hole is equipped with a longitudinally arranged temperature regulating rod 5. The lower end of the temperature regulating rod 5 is placed inside the sand in the inner barrel 2. By adjusting the temperature of the upper end of the temperature regulating rod 5, the temperature of the sand below is controlled through heat conduction. The temperature regulating rod 5 is equipped with a coaxially arranged sealing cover 6, which is placed inside the countersunk hole. The sealing cover 6 prevents moisture from entering the inner barrel 2 through the countersunk hole.

[0021] The lower end of the support plate 9 is provided with a baffle 12, which is located below the perforation 10. One end of the baffle 12 is hinged to the lower end face of the support plate 9, and the other end of the baffle 12 is provided with a horizontally arranged limiting rod 13. The limiting rod 13 is rotatably connected to the lower end face of the support plate 9, and the upper end face of one end of the limiting rod 13 abuts against the lower end face of the baffle 12. Rotating the limiting rod 13 separates it from the baffle 12, thereby allowing the sand in the inner barrel 2 to be discharged from the perforation 10.

[0022] The lower end face of the bearing plate 9 is provided with reinforcing ribs 15, and a strut 14 is provided between two adjacent reinforcing ribs 15. The upper end of the strut 14 is connected to the lower end face of the bearing plate 9. The strut 14 supports the bearing plate 9 to prevent the bearing plate 9 from deforming under force and to prevent the workpiece above from shifting.

[0023] Fans 8 are distributed inside the temperature regulating cavity 7. The fans 8 are mounted on the support plate 9 and pass through the support plate 9. The fans 8 are electrically connected to an external controller. The fans 8 draw in external cold air to cool the sand on the edge of the inner barrel 2 and accelerate the cooling of the workpiece. Alternatively, insulation material can be filled into the temperature regulating cavity 7 to prolong the cooling time of the workpiece.

[0024] The low-temperature ductile iron casting heat dissipation device described in this embodiment involves placing the workpiece on the support block 11 inside the inner barrel 2, then filling the inner barrel 2 with sand to bury the workpiece. The sand provides insulation and slow cooling for the workpiece. During the cooling process, insulation material can be added to the temperature regulating chamber 7, and the cover 4 can be closed to prolong the cooling time of the workpiece. When accelerated cooling is required, the lower end of the temperature regulating rod 5 is inserted into the sand below. The sealing cover 6 is placed in the countersunk hole to prevent moisture from entering the inner barrel 2 through the countersunk hole. The upper end of the temperature regulating rod 5 is cooled by means of air blowing or spraying, and the temperature of the sand below is controlled by heat conduction. The fan 8 in the temperature regulating chamber 7 is turned on, and the fan 8 draws in external cold air to cool the sand at the edge of the inner barrel 2, accelerating the cooling of the workpiece. After cooling is completed, the limiting rod 13 is rotated to separate it from the baffle 12, so that the sand in the inner barrel 2 is discharged from the perforation 10. The sand falling from the inner barrel 2 is collected through the channel 3.

[0025] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A heat dissipation device for low-temperature ductile iron castings, comprising an outer barrel (1), an inner barrel (2), a bearing plate (9), a support block (11), and a lid (4), wherein the outer barrel (1) and the inner barrel (2) are coaxially arranged, the outer barrel (1) and the inner barrel (2) are provided with a horizontally arranged bearing plate (9), and a temperature regulating cavity (7) is provided between the outer barrel (1) and the inner barrel (2), characterized in that: The inner barrel (2) is filled with sand. The bearing plate (9) has a perforation (10) in the center. Support blocks (11) are distributed on both sides of the perforation (10). The workpiece is placed on the support blocks (11). The outer barrel (1) and the inner barrel (2) are covered with lids (4).

2. The low-temperature ductile iron casting heat dissipation device according to claim 1, characterized in that: The outer barrel (1) has a through groove (3) on its side, which passes through the outer barrel (1) and the inner barrel (2). The through groove (3) is located below the support plate (9).

3. The low-temperature ductile iron casting heat dissipation device according to claim 1, characterized in that: The cover (4) has countersunk holes, and each countersunk hole is provided with a longitudinally arranged temperature regulating rod (5). The lower end of the temperature regulating rod (5) is placed in the sand of the inner barrel (2). The temperature regulating rod (5) is provided with a coaxially arranged sealing cover (6), which is placed in the countersunk hole.

4. The low-temperature ductile iron casting heat dissipation device according to claim 2, characterized in that: The lower end of the bearing plate (9) is provided with a baffle (12), which is located below the perforation (10). One end of the baffle (12) is hinged to the lower end face of the bearing plate (9), and the other end of the baffle (12) is provided with a horizontally arranged limiting rod (13). The limiting rod (13) is rotatably connected to the lower end face of the bearing plate (9), and the upper end face of one end of the limiting rod (13) abuts against the lower end face of the baffle (12).

5. The low-temperature ductile iron casting heat dissipation device according to claim 4, characterized in that: The lower end face of the bearing plate (9) is provided with reinforcing ribs (15), and a strut (14) is provided between two adjacent reinforcing ribs (15). The upper end of the strut (14) is connected to the lower end face of the bearing plate (9).

6. The low-temperature ductile iron casting heat dissipation device according to claim 1, characterized in that: The temperature control cavity (7) is equipped with fans (8), which are mounted on the support plate (9). The fans (8) penetrate the support plate (9) and are electrically connected to an external controller.

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