Columnar cast member slow cooling device

Abstract

A kind of columnar casting slow cooling device, including lower support, columnar casting is placed on lower support, protective shell is placed on lower support, columnar casting is located in protective shell, the top of protective shell is equipped with top cover, protective shell is filled with sandstone with columnar casting.The utility model compared with prior art exists, first, only need to place casting on ceramic support, to support casting by ceramic support, and ceramic support has the characteristics of low heat transfer efficiency, thereby reducing the cooling rate of casting.Second, by the way of filling sandstone or heat preservation sand in the outer periphery of protective shell and casting to reduce the heat dissipation effect, so as to slow cooling purpose.And the protective shell is spliced by a pair of semicircular plates, which is convenient for disassembly and installation operation, and the concave buckle improves the stability and structural strength of the spliced protective shell.Third, it is convenient to discharge the heat preservation sand through the discharge hole and the baffle arranged in the insertion.

Description

Technical Field

[0001] This utility model relates to the field of casting processing technology, and in particular to a slow cooling device for columnar castings. Background Technology

[0002] After casting is completed, it is often necessary to perform heat treatment to improve its mechanical strength. For some castings, water cooling is not an option. Instead, they are buried in insulating sand for slow cooling. Although this method can achieve slow cooling, it is inconvenient to operate. The process involves digging a pit, placing the casting in the pit, and then filling it with insulating sand. This process is cumbersome, and the casting loses a lot of heat during the process. It also requires a large area. Utility Model Content

[0003] This utility model provides a slow cooling device for columnar castings to overcome the shortcomings of the prior art and solve the problem of inconvenience in slow cooling and landfill operations, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A slow cooling device for columnar castings includes a lower support, on which the columnar casting is placed. A protective shell is placed on the lower support, and the columnar casting is located inside the protective shell. A top cover is provided at the upper end of the protective shell, and the protective shell and the columnar casting are filled with sand and gravel.

[0005] Furthermore, the lower support includes a chassis, on which a ceramic support is fixed by bolts. The chassis has multiple discharge holes, and a baffle is provided below the discharge holes. An outer pull plate is bent at the outer end of the baffle, and an elongated hole is provided on the outer pull plate. Folded clips are fitted on both sides of the baffle, and the upper wall of the folded clips abuts against the lower wall of the baffle. A ring is welded to the upper side of the chassis, and an inner ring is provided on the inner circumference of the ring. The inner wall of the inner ring has a conical structure, and the lower end of the conical structure of the inner ring is the small end.

[0006] Furthermore, multiple support recesses are fixed to the chassis by bolts, and a central support is fixed to the underside of the chassis by bolts.

[0007] Furthermore, the protective shell includes a pair of semi-circular plates fitted outside the inner ring, with retaining strips bent at both ends of the semi-circular plates, and a concave buckle on the retaining strip on the same side.

[0008] Furthermore, the outer periphery of the chassis is symmetrically formed with a convex plate. A concave rotating seat is welded to the upper side of the outer end of the convex plate. A rotating block is provided at the upper end of the concave rotating seat via a rotating shaft. An inner top screw is connected to the rotating block by a thread. A rotating head is provided at the outer end of the inner top screw. An end ball is welded to the inner end of the inner top screw. The inner end of the end ball abuts against the lower outer wall of the concave buckle, and the inner top screw is in a horizontal position.

[0009] Furthermore, the top cover includes an inner insert ring inserted into the upper end of the semi-circular plate, a cover plate welded to the upper end of the inner insert ring, and a pair of concave buckle plates welded to the outer periphery of the cover plate, the concave buckle plates being fastened to the upper end of the clip located on the same side.

[0010] The advantages of the above technical solution are: Compared with existing technologies, this invention has the following advantages: First, it only requires placing the casting on a ceramic support platform for support, and the ceramic support platform has low heat transfer efficiency, thus reducing the cooling rate of the casting. Second, by filling the protective shell and the outer periphery of the casting with sand or insulating sand, the heat dissipation effect is reduced, thereby achieving slow cooling. Furthermore, the protective shell is composed of a pair of semi-circular plates, facilitating disassembly and installation, while the concave buckle further enhances the stability and structural strength of the assembled protective shell. Third, the insulating sand is easily discharged after cooling through the drain hole and the pull-out baffle. Fourth, the concave buckle is limited by the top cover and inner top screw, ensuring the stability of the connected protective shell. Attached Figure Description

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in further detail below with reference to the accompanying drawings.

[0012] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .

[0013] Figure 2 A three-dimensional structure of one embodiment is shown. Figure 2 .

[0014] Figure 3 A three-dimensional structure of one embodiment is shown. Figure 3 .

[0015] Figure 4 A three-dimensional structural diagram of the protective shell is shown. Detailed Implementation

[0016] like Figures 1-4As shown, a slow cooling device for a columnar casting includes a lower support, on which the columnar casting is placed. A protective shell is placed on the lower support, and the columnar casting is located inside the protective shell. A top cover is provided at the upper end of the protective shell, and the protective shell and the columnar casting are filled with sand and gravel.

[0017] The lower support includes a chassis 1, on which a ceramic support platform 61 is fixed by bolts. Multiple discharge holes 12 are provided on the chassis 1. A baffle 2 is located below the discharge holes 12. An outer pull plate 20 is bent at the outer end of the baffle 2, and an elongated hole 22 is provided on the outer pull plate 20. Folded clips 21 are fitted on both sides of the baffle 2, with the upper wall of the folded clips 21 abutting against the lower wall of the baffle 2. A ring 6 is welded to the upper side of the chassis 1. An inner ring 60 is provided on the inner circumference of the ring 6. The inner wall of the inner ring 60 has a conical structure, with the lower end of the conical structure of the inner ring 60 being the smaller end. Multiple support recesses 10 are fixed to the chassis 1 by bolts, and a central support member 11 is fixed to the lower side of the chassis 1 by bolts.

[0018] The protective shell includes a pair of semi-circular plates 3 fitted around the inner ring 60. Each end of the semi-circular plate 3 has a retaining strip 30 bent at one end. The retaining strip 30 on the same side is fitted with a concave buckle 5. The outer periphery of the chassis 1 is symmetrically formed with a convex plate 13. A concave rotating seat 50 is welded to the upper side of the outer end of the convex plate 13. A rotating block 52 is rotatably provided at the upper end of the concave rotating seat 50 via a rotating shaft 51. An inner top screw 53 is threadedly connected to the rotating block 52. A rotating head 54 is provided at the outer end of the inner top screw 53. An end ball 55 is welded to the inner end of the inner top screw 53. The inner end of the end ball 55 abuts against the lower outer wall of the concave buckle 5, and the inner top screw 53 is in a horizontal position.

[0019] The top cover includes an inner ring 4 inserted into the upper end of the semi-circular plate 3. A cover plate 40 is welded to the upper end of the inner ring 4. A pair of concave buckle plates 41 are welded to the outer periphery of the cover plate 40. The concave buckle plates 41 are fastened to the upper end of the clip 30 located on the same side.

[0020] In this embodiment, the operator places the heat-treated casting on the ceramic support 61, and then places the semi-circular plate 3 on the outer circumference of the ring 6. After the ring is placed, the concave buckle 5 is fastened on the retaining strip 30. Then, the inner top screw 53 is rotated around the axis of the rotating shaft 51 so that the end ball 55 of the inner top screw 53 abuts against the outer wall of the concave buckle 5. This ensures the stability of the concave buckle 5 after it is fastened. At this time, the inner top screw 53 is in a horizontal position. During operation, the inner top screw 53 can be screwed according to the actual situation to improve the fixing effect of the concave buckle 5.

[0021] Then, under the condition that the baffle 2 blocks the discharge hole 12, fill the protective shell with a sufficient amount of heat-insulating sand. After filling, place the top cover on the upper end of the protective shell. When installing, fasten the concave buckle 41 on the upper end of the clip 30 on the same side, and then slowly cool the casting.

[0022] After slow cooling is complete, pull the baffle 2 outward to open the discharge hole 12 and allow the insulating sand inside the protective shell to be discharged. Then remove the concave buckle 5 and the top cover, then remove the semi-circular plate, and then lift the casting out.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A slow cooling device for columnar castings, characterized in that, It includes a lower support, a columnar casting placed on the lower support, a protective shell placed on the lower support, the columnar casting located inside the protective shell, a top cover at the upper end of the protective shell, and sand and gravel filling the protective shell and the columnar casting. The lower support includes a chassis (1), a ceramic support (61) is fixed on the chassis (1) by bolts, a plurality of discharge holes (12) are provided on the chassis (1), a baffle (2) is provided below the discharge holes (12), an outer pull plate (20) is bent on the outer end of the baffle (2), an elongated hole (22) is provided on the outer pull plate (20), and a folded clip (21) is fitted on both sides of the baffle (2). The upper wall of the folded clip (21) abuts against the lower wall of the baffle (2). A ring sleeve (6) is welded on the upper side of the chassis (1), and an inner ring (60) is provided on the inner circumference of the ring sleeve (6). The inner wall of the inner ring (60) is conical, and the lower end of the conical structure of the inner ring (60) is the small end.

2. The slow cooling device for columnar castings according to claim 1, characterized in that, Multiple support recesses (10) are fixed to the chassis (1) by bolts, and a central support (11) is fixed to the underside of the chassis (1) by bolts.

3. The slow cooling device for columnar castings according to claim 1, characterized in that, The protective shell includes a pair of semi-circular plates (3) fitted outside the inner ring (60), with buckles (30) bent at both ends of the semi-circular plates (3), and the buckles (30) on the same side are fitted with concave buckles (5).

4. The slow cooling device for columnar castings according to claim 3, characterized in that, The outer periphery of the chassis (1) is symmetrically formed with a convex plate (13). A concave rotating seat (50) is welded to the upper side of the outer end of the convex plate (13). A rotating block (52) is provided at the upper end of the concave rotating seat (50) via a rotating shaft (51). An inner top screw (53) is connected to the rotating block (52) by a thread. A rotating head (54) is provided at the outer end of the inner top screw (53). An end ball (55) is welded to the inner end of the inner top screw (53). The inner end of the end ball (55) abuts against the lower outer wall of the concave buckle (5), and the inner top screw (53) is in a horizontal position.

5. The slow cooling device for columnar castings according to claim 3, characterized in that, The top cover includes an inner ring (4) inserted into the upper end of the semi-circular plate (3), and a cover plate (40) is welded to the upper end of the inner ring (4). A pair of concave buckles (41) are welded to the outer periphery of the cover plate (40), and the concave buckles (41) are fastened to the upper end of the clip (30) located on the same side.

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