Molding sand cooling device for casting

Abstract

The utility model discloses a molding sand cooling device for casting, which relates to the technical field of casting sand cooling equipment and comprises a cooling bin, a support is arranged at the top of the cooling bin and connected with a cooling cylinder through a connecting rod, and the cooling cylinder is positioned in the cooling bin. An inner cooling pipeline and an outer cooling pipeline are spirally arranged on the inner wall of the cooling cylinder and the inner wall of the cooling bin respectively, the two ends of the inner cooling pipeline and the two ends of the outer cooling pipeline are connected with a circulating cold water tank respectively, a stirring motor is arranged on the support, and the bottom of the stirring motor is connected with a stirring assembly. According to the design scheme, molding sand is cooled from inside to outside through the inner cooling pipeline and the outer cooling pipeline respectively, the molding sand flows in the cooling bin and is uniformly cooled, heat of the molding sand is transferred to the heat-conducting fins through the stirring rods and the scrapers, the contact area between the heat-conducting fins and air is large, heat dissipation is faster, the heat-conducting fins rotate along with the scrapers, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundry sand cooling equipment, in particular to a foundry sand cooling device. Background Art

[0002] Molding sand can be divided into surface sand, filling sand and single sand. Surface sand is a layer of molding sand close to the casting and has high quality requirements. Filling sand is behind the surface sand layer and does not contact the molten metal, so the quality requirements are not strict. Single sand is molding sand that is not divided into surface sand and back sand and is mainly used for machine modeling. In addition, the sand mold of large castings often needs to be dried before pouring. The molding sand used contains more clay. This kind of molding sand is called dry mold sand. At present, in large-scale continuous production, the temperature of the molding sand is too high, which will cause damage to the foam model. Therefore, a cooling device is needed to cool the casting sand.

[0003] When the current cooling device is in use, it feeds the casting sand into a barrel and cools it by passing cold water into a water-cooling jacket outside the barrel. Since the casting sand is piled up in the barrel, its internal temperature is difficult to reduce, resulting in incomplete cooling of the casting sand. Utility Model Content

[0004] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a casting sand cooling device.

[0005] The utility model adopts the following technical solution to solve the technical problem: a sand cooling device for casting, comprising a cooling silo, a bracket is provided on the top of the cooling silo, the bracket is connected to a cooling cylinder through a connecting rod, the cooling cylinder is located inside the cooling silo, an inner cooling pipe and an outer cooling pipe are spirally arranged on the inner wall of the cooling cylinder and the cooling silo, the two ends of the inner cooling pipe and the outer cooling pipe are respectively connected to a circulating cold water tank, a stirring motor is provided on the bracket, and a stirring assembly is connected to the bottom of the stirring motor.

[0006] Furthermore, the bottom of the cooling silo is conical and a discharge port is provided at the conical bottom. The two ends of the external cooling pipe are respectively located at the top side wall of the cooling silo and the bottom side wall of the discharge port. The two ends of the internal cooling pipe extend out from the inside of the connecting rod and are connected to the circulating cold water tank.

[0007] Furthermore, the stirring assembly includes an auger, the top of the auger is fixedly connected to the output end of the stirring motor, the auger is coaxially arranged with the cooling silo and the cooling cylinder, the upper part of the auger matches the inner wall of the cooling cylinder, and the end of the auger matches the inner wall of the discharge port.

[0008] Furthermore, the lower part of the auger is fixedly connected to a scraper, the scraper is in contact with the inner wall of the cooling silo, a plurality of stirring rods are evenly arranged on the scraper, and the top of the auger is fixedly connected to a material baffle plate, which is located above the cooling cylinder.

[0009] Furthermore, the top of the scraper is connected to a heat conducting plate, and the heat conducting plate is located at the top opening of the cooling silo.

[0010] Furthermore, a solenoid valve is provided at the bottom of the discharge port.

[0011] The beneficial effect of the utility model is that molding sand is added to the cooling silo from the top, cold water in the outer cooling pipes in the cooling silo cools the molding sand from the outside, and cold water in the inner cooling pipe in the cooling cylinder cools the molding sand from the inside, the auger lifts the molding sand at the bottom of the cooling silo from the cooling cylinder upward, and falls back into the cooling silo outside the cooling cylinder, so that the molding sand flows in the cooling silo and is cooled evenly, and the molding sand transfers heat to the heat conducting plate through the stirring rod and the scraper, the contact area between the heat conducting plate and the air is large, the heat dissipation is faster, and the heat conducting plate rotates with the scraper to improve the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is a top view of the utility model.

[0016] In the figure, 1. cooling silo, 2. bracket, 3. connecting rod, 4. cooling cylinder, 5. inner cooling pipe, 6. outer cooling pipe, 7. stirring motor, 8. discharge port, 9. auger, 10. scraper, 11. stirring rod, 12. baffle plate, 13. heat conducting sheet. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0018] like Figures 1 to 3As shown, a molding sand cooling device for casting comprises a cooling silo 1, a bracket 2 is provided on the top of the cooling silo 1, the bracket 2 is connected to a cooling cylinder 4 through a connecting rod 3, the cooling cylinder 4 is located inside the cooling silo 1, an inner cooling pipe 5 and an outer cooling pipe 6 are spirally provided on the inner walls of the cooling cylinder 4 and the cooling silo 1, both ends of the inner cooling pipe 5 and the outer cooling pipe 6 are respectively connected to a circulating cold water tank, molding sand is added into the cooling silo 1 from the top, the cold water in the outer cooling pipe 6 in the cooling silo 1 cools the molding sand from the outside, and the cold water in the inner cooling pipe 5 in the cooling cylinder 4 cools the molding sand from the inside, a stirring motor 7 is provided on the bracket 2, and a stirring assembly is connected to the bottom of the stirring motor 7.

[0019] The bottom of the cooling silo 1 is conical and a discharge port 8 is provided at the conical bottom. The two ends of the external cooling pipe 6 are respectively located at the top side wall of the cooling silo 1 and the bottom side wall of the discharge port 8. The two ends of the internal cooling pipe 5 extend through the inside of the connecting rod 3 and are connected to the circulating cold water tank to circulate the cooling water to ensure the cooling effect.

[0020] The stirring assembly includes an auger 9, the top of which is fixedly connected to the output end of the stirring motor 7, the auger 9 is coaxially arranged with the cooling silo 1 and the cooling cylinder 4, the upper part of the auger 9 matches the inner wall of the cooling cylinder 4, and the end of the auger 9 matches the inner wall of the discharge port 8. The auger 9 lifts the molding sand at the bottom of the cooling silo 1 upward from the cooling cylinder 4, and falls back into the cooling silo 1 outside the cooling cylinder 4, so that the molding sand flows in the cooling silo 1 and is evenly cooled, and the molding sand is cooled by the internal cooling pipe 5 in the inner wall of the cooling cylinder 4.

[0021] The lower part of the auger 9 is fixedly connected to a scraper 10, which fits the inner wall of the cooling silo 1. A plurality of stirring rods 11 are evenly arranged on the scraper 10 to stir the molding sand, mix the molding sand, and cool it evenly. The top of the auger 9 is fixedly connected to a baffle plate 12, which is located above the cooling cylinder 4 to prevent the molding sand from flying out.

[0022] The top of the scraper 10 is connected to a heat conductive sheet 13, which is located at the top opening of the cooling silo 1. The molding sand with a higher temperature transfers heat to the stirring rod 11 and the scraper 10 during stirring. The heat on the stirring rod 11 and the scraper 10 is transferred to the heat conductive sheet 13. The heat conductive sheet 13 has a large contact area with the air and dissipates heat faster. The heat conductive sheet 13 rotates with the scraper 10 to improve the heat dissipation efficiency.

[0023] A solenoid valve is provided at the bottom of the discharge port 8. After the molding sand is cooled, the solenoid valve is opened, and the stirring motor 7 drives the auger 9 to reverse and transport the molding sand outward through the discharge port 8.

[0024] When the utility model is in use, molding sand is added to the cooling silo 1 from the top, and the cold water in the outer cooling pipe 6 in the cooling silo 1 cools the molding sand from the outside, and the cold water in the inner cooling pipe 5 in the cooling cylinder 4 cools the molding sand from the inside, and the auger 9 lifts the molding sand at the bottom of the cooling silo 1 from the cooling cylinder 4 upward, and falls back into the cooling silo 1 outside the cooling cylinder 4, so that the molding sand flows in the cooling silo 1 and is evenly cooled. The molding sand transfers heat to the heat conducting plate 13 through the stirring rod 11 and the scraper 10. The heat conducting plate 13 has a large contact area with the air and dissipates heat faster. The heat conducting plate 13 rotates with the scraper 10 to improve the heat dissipation efficiency.

[0025] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A casting sand cooling device, comprising a cooling silo (1), characterized in that: A bracket (2) is provided on the top of the cooling silo (1), and the bracket (2) is connected to a cooling cylinder (4) via a connecting rod (3). The cooling cylinder (4) is located inside the cooling silo (1). An inner cooling pipe (5) and an outer cooling pipe (6) are respectively spirally provided on the inner walls of the cooling cylinder (4) and the cooling silo (1). Both ends of the inner cooling pipe (5) and the outer cooling pipe (6) are respectively connected to a circulating cold water tank. A stirring motor (7) is provided on the bracket (2), and the bottom of the stirring motor (7) is connected to a stirring assembly.

2. A casting sand cooling device according to claim 1, characterized in that: The bottom of the cooling silo (1) is conical and a discharge port (8) is provided at the conical bottom. The two ends of the external cooling pipe (6) are respectively located at the top side wall of the cooling silo (1) and the bottom side wall of the discharge port (8). The two ends of the internal cooling pipe (5) extend from the inside of the connecting rod (3) and are connected to a circulating cold water tank.

3. A casting sand cooling device according to claim 1, characterized in that: The stirring assembly includes an auger (9), the top of the auger (9) is fixedly connected to the output end of the stirring motor (7), the auger (9) is coaxially arranged with the cooling silo (1) and the cooling cylinder (4), the upper part of the auger (9) matches the inner wall of the cooling cylinder (4), and the lower end of the auger (9) matches the inner wall of the discharge port (8).

4. A casting sand cooling device according to claim 3, characterized in that: The lower part of the auger (9) is fixedly connected to a scraper (10), the scraper (10) is in contact with the inner wall of the cooling silo (1), a plurality of stirring rods (11) are evenly arranged on the scraper (10), and the top of the auger (9) is fixedly connected to a material baffle plate (12), and the material baffle plate (12) is located above the cooling cylinder (4).

5. A casting sand cooling device according to claim 4, characterized in that: The top of the scraper (10) is connected to a heat conducting plate (13), and the heat conducting plate (13) is located at the top opening of the cooling silo (1).

6. A casting sand cooling device according to claim 2, characterized in that: A solenoid valve is provided at the bottom of the discharge port (8).

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