Isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron

Abstract

The utility model provides an isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron. A main body is of a columnar structure with an open upper end, an inner shell is arranged in the main body, a first sealing flange corresponding to the upper end of the main body is arranged on the outer wall of the inner shell, a supporting plate corresponding to the bottom of the main body is arranged at the lower end of the inner shell, and a cooling mechanism is arranged between the inner shell and the main body; the outer shell is sleeved outside the main body, a second sealing flange corresponding to the upper end of the outer shell is arranged on the outer wall of the inner shell, and a heat-insulating layer is arranged between the outer shell and the main body; and the stirring mechanism extends into the inner shell from top to bottom so as to stir the solution in the inner shell. The outer side is used for heat preservation, the inner shell is provided with the stirring mechanism, quenching salt is dissolved through the stirring mechanism, and the cooling mechanism is arranged between the inner shell and the outer shell, so that quenching liquid is cooled, and the quenching liquid can be cooled to the preset temperature.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting quenching, and particularly relates to an isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron. Background Art

[0002] The heat treatment process of metal materials is one of the important processes in mechanical manufacturing. A reasonable heat treatment process can improve the mechanical strength performance of metal materials by several orders of magnitude. When processing parts made of some special steels, quenching salts need to be added for quenching, so that the workpieces are not easily oxidized and decarburized, and have the characteristics of fast heating speed. However, quenching salts are not easily dissolved and require special stirring equipment to dissolve them. Moreover, in order to ensure the quenching quality, the quenching salts need to be cooled to a preset temperature. It is difficult to meet the cooling and dissolution stirring functions simultaneously in the prior art.

[0003] Therefore, an improved technical solution is needed to address the above deficiencies in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above deficiencies in the prior art. The utility model provides an isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron, comprising:

[0007] A main body, which is a columnar structure with an open upper end. An inner shell is arranged inside the main body. A first sealing flange corresponding to the upper end of the main body is arranged on the outer wall of the inner shell. A support plate corresponding to the bottom of the main body is arranged at the lower end of the inner shell. A cooling mechanism is arranged between the inner shell and the main body;

[0008] An outer shell, which is sleeved outside the main body. A second sealing flange corresponding to the upper end of the outer shell is arranged on the outer wall of the inner shell. A heat preservation layer is arranged between the outer shell and the main body;

[0009] A stirring mechanism, which extends into the inner shell from top to bottom to stir the solution inside the inner shell.

[0010] Preferably, the cooling and stirring device further comprises legs, which pass through the outer shell from bottom to top and support on the bottom of the main body. A plurality of the legs are evenly distributed in the circumferential direction of the main body.

[0011] Preferably, an upper cover is arranged at the upper end of the inner shell, and a feeding window is arranged on the upper cover.

[0012] Preferably, the stirring mechanism comprises:

[0013] A bracket, which is fixed above the upper cover;

[0014] A drive shaft, which is rotatably connected to the middle of the bracket and extends along the axis into the bottom of the inner shell;

[0015] A stirring frame, which is arranged on the side of the drive shaft and is provided with a shovel body that abuts against the side wall and the bottom of the inner shell.

[0016] Preferably, the stirring frame includes a horizontal rod perpendicular to the drive shaft and a vertical rod parallel to the drive shaft. A plurality of the shovel bodies are butt-hinged to the horizontal rod and the vertical rod through hinge shafts, and torsion springs are sleeved on the hinge shafts so that the non-hinged ends of the shovel bodies are pressed against the inner wall or the bottom of the inner shell.

[0017] Preferably, the cooling mechanism includes a compressor and a condenser connected to each other. The condenser is a tube body that spirally extends along the gap between the main body and the inner shell, and an installation box corresponding to the compressor is provided on the side of the outer shell.

[0018] Preferably, there are a plurality of the support plates, and the plurality of the support plates are distributed in a grid pattern.

[0019] Beneficial effects: The main body is arranged in a three-layer structure, where the outer layer is used for heat preservation. The inner shell is provided with a stirring mechanism to dissolve the quenching salt through the stirring mechanism. A cooling mechanism is arranged between the inner shell and the outer shell to cool the quenching liquid, so that the quenching liquid can be cooled to a preset temperature. Description of the Drawings

[0020] The schematic drawings of the specification that form a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:

[0021] Figure 1 is a structural schematic diagram of the cooling and stirring device in the specific embodiment provided by the present utility model;

[0022] Figure 2 is a cross-sectional schematic diagram of the cooling and stirring device in the specific embodiment provided by the present utility model.

[0023] In the figure: 1. Outer shell; 2. Upper cover; 3. Installation box; 4. Second sealing flange; 5. Leg; 6. Feeding window; 7. Drive motor; 8. Bracket; 9. Drive shaft; 10. Vertical rod; 11. First sealing flange; 12. Compressor; 13. Support plate; 14. Shovel body; 15. Horizontal rod; 16. Condenser. Detailed Description of the Invention

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0027] As Figure 1-2 shown, an isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron includes a main body, an outer shell 1 and a stirring mechanism. The main body is a columnar structure with an open upper end, welded from a metal material. An inner shell is provided inside the main body. There is a gap between the inner shell and the outer shell 1. The inner shell is a barrel-shaped structure with an open upper end made of stainless steel. A first sealing flange 11 corresponding to the upper end of the main body is provided on the outer wall of the inner shell. The first sealing flange 11 is annular. The inner and outer sides of the first sealing flange 11 are respectively fixed to the inner shell and the main body by welding, and the gap between the inner shell and the outer shell 1 is sealed. A support plate 13 corresponding to the bottom of the main body is provided at the lower end of the inner shell. The support plate 13 is used to bear the weight of the inner shell and isolate the bottom of the inner cavity from the main body to avoid heat dissipation. A cooling mechanism is provided between the inner shell and the main body to cool the quenching liquid in the inner shell. The outer shell 1 is sleeved outside the main body. A second sealing flange 4 corresponding to the upper end of the outer shell 1 is provided on the outer wall of the inner shell. The second sealing flange 4 is annular. The inner and outer sides are respectively fixed to the outer shell 1 and the main body by welding. A heat insulation layer is provided between the outer shell 1 and the main body; the heat insulation layer can be heat insulation cotton, used to isolate the temperature and avoid heat consumption. The stirring mechanism extends into the inner shell from top to bottom to stir the solution in the inner shell, thereby improving the dissolution efficiency and the cooling efficiency.

[0028] In an alternative embodiment, the cooling and stirring device further includes legs 5. The legs 5 pass through the outer shell 1 from bottom to top and are supported on the bottom of the main body. A plurality of legs 5 are evenly distributed in the circumferential direction of the main body, and the number of legs 5 is three.

[0029] In an alternative embodiment, an upper cover 2 is provided at the upper end of the inner shell. A feeding window 6 is provided on the upper cover 2. The feeding window 6 is hinged to the upper cover 2 through a hinge. A support plate is provided on the side of the feeding window 6 for temporarily placing quenching salt.

[0030] In an alternative embodiment, the stirring mechanism includes a bracket 8, a drive shaft 9, and a stirring frame. The bracket 8 is fixed above the upper cover 2. The two ends of the bracket 8 are bent downward and supported on the second sealing flange 4. The drive shaft 9 is rotatably connected to the middle of the bracket 8 and extends along the axis into the bottom of the inner shell. The upper end of the drive shaft 9 is connected to a drive motor 7 through a speed reducer. The drive motor 7 and the speed reducer are fixed on the bracket 8. The stirring frame is arranged on the side of the drive shaft 9 and is provided with a shovel body 14 that abuts against the side wall and the bottom of the inner shell. The shovel body 14 contacts the bottom and the inner wall of the inner shell, so as to stir the quenching salt to improve the dissolution efficiency, and the shovel body 14 shovels along the inner wall and the bottom of the inner shell, thereby preventing the quenching salt from crystallizing on the inner shell during the cooling process.

[0031] In an alternative embodiment, the stirring frame includes a horizontal rod 15 perpendicular to the drive shaft 9 and a vertical rod 10 parallel to the drive shaft 9. The length of the vertical rod 10 is adapted to the depth of the inner shell, and the length of the horizontal rod 15 is adapted to the inner diameter of the inner shell. The horizontal rod 15 and the vertical rod 10 are fixed to each other to form an L shape. A connecting rod corresponding to the drive shaft 9 is provided in the upper middle part of the vertical rod 10. A plurality of shovel bodies 14 are butt-hinged to the horizontal rod 15 and the vertical rod 10 through hinge shafts, so as to satisfy the shoveling of the inner cavity inner wall and the bottom, and ensure that the shoveling area is adapted to the inner shell. The distance between the horizontal rod 15 and the vertical rod 10 and the corresponding inner shell side wall is less than the length of the shovel body 14, so that the shovel body 14 extends obliquely to the inner wall of the inner shell. A torsion spring is sleeved on the hinge shaft, so that the non-hinged end of the shovel body 14 has a tendency to be pressed against the inner wall or the bottom of the inner shell.

[0032] In an alternative embodiment, the cooling mechanism includes a compressor 12 and a condenser 16 that are connected to each other. For details, refer to the refrigeration system of the refrigerator, which will not be elaborated here too much. Thus, temperature reduction can be achieved. An installation box 3 corresponding to the compressor 12 is provided on the side of the outer shell 1. The compressor 12 is connected to the power supply for refrigeration. A heat dissipation port is provided on the installation box 3. The condenser 16 is a tube body that spirally extends along the gap between the main body and the inner shell, specifically a copper tube, so as to cool the inner shell.

[0033] There are a plurality of support plates 13. The plurality of support plates 13 are distributed in a grid shape by welding, so as to support the inner shell.

[0034] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model are within the scope of protection of the pending claims of the present utility model.

Claims

1. An isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron, characterized in that: include: A main body, wherein the main body is a columnar structure with an open upper end, an inner shell is arranged inside the main body, an outer wall of the inner shell is provided with a first sealing flange corresponding to the upper end of the main body, a support plate corresponding to the bottom of the main body is arranged at the lower end of the inner shell, and a cooling mechanism is arranged between the inner shell and the main body; An outer shell, the outer shell is sleeved on the outside of the main body, a second sealing flange corresponding to the upper end of the outer shell is provided on the outer wall of the inner shell, and an insulation layer is provided between the outer shell and the main body; The stirring mechanism extends from top to bottom into the inner shell to stir the solution in the inner shell.

2. The isothermal quenching salt bath cooling and stirring device for high silicon ductile iron according to claim 1, characterized in that: The cooling and stirring device also includes a support leg, which passes through the outer shell from bottom to top and is supported at the bottom of the main body, and a plurality of the support legs are evenly distributed in the circumferential direction of the main body.

3. The isothermal quenching salt bath cooling and stirring device for high silicon ductile iron according to claim 1, characterized in that: An upper cover is arranged at the upper end of the inner shell, and a launching window is arranged on the upper cover.

4. The isothermal quenching salt bath cooling and stirring device for high-silicon ductile iron according to claim 3, characterized in that: The stirring mechanism comprises: A bracket, wherein the bracket is fixed above the upper cover; A drive shaft, the drive shaft is rotatably connected to the middle of the bracket and extends into the bottom of the inner shell along the axis; The stirring frame is arranged on the side of the driving shaft and is provided with a shovel body that abuts against the side wall and the bottom of the inner shell.

5. The isothermal quenching salt bath cooling and stirring device for high silicon ductile iron according to claim 4, characterized in that: The stirring frame includes a horizontal rod perpendicular to the driving shaft and a vertical rod parallel to the driving shaft. Multiple shovel bodies are hinged to the horizontal rod and the vertical rod through a hinge shaft. A torsion spring is sleeved on the hinge shaft to squeeze the non-hinged end of the shovel body to the inner wall or bottom of the inner shell.

6. The isothermal quenching salt bath cooling and stirring device for high silicon ductile iron according to claim 1, characterized in that: The cooling mechanism comprises a compressor and a condenser connected to each other. The condenser is a tube body extending spirally along the gap between the main body and the inner shell. A mounting box corresponding to the compressor is arranged on the side of the outer shell.

7. The isothermal quenching salt bath cooling and stirring device for high silicon ductile iron according to claim 1, characterized in that: There are multiple support plates, and the multiple support plates are distributed in a grid shape.

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