Casting sand treatment circulating cooling device

Abstract

The invention belongs to the technical field of foundry sand cooling, and particularly relates to a foundry sand treatment circulating cooling device which comprises a feeding mechanism, a discharging mechanism is arranged below the feeding mechanism, a plurality of cooling mechanisms arranged in a stacked mode are arranged between the feeding mechanism and the discharging mechanism, and each cooling mechanism comprises a fourth shell. A plurality of heat conduction pipes which are longitudinally arranged at equal intervals are arranged in the fourth shell, after casting sand materials are put into the heat conduction pipes, circulating cooling liquid is injected into the fourth shell to cool the heat conduction pipes and the casting sand materials in the heat conduction pipes, and a discharging mechanism is installed at the bottom of the discharging mechanism. The casting sand material to be cooled is put into the multiple heat conduction pipes which are longitudinally arranged at equal intervals, cooling of the casting sand material can be accelerated by increasing the contact area between the casting sand material and the circulating cooling liquid, the casting sand material and the circulating cooling liquid are separated through the heat conduction pipes, and the cooling efficiency is improved. And it is ensured that the cooled foundry sand material is still in a dry state.

Description

Technical Field

[0001] This invention relates to the field of casting sand cooling technology, and more particularly to a casting sand processing and circulating cooling device. Background Technology

[0002] Foundry sand is the material required for molding castings during the casting process. The foundry sand after pouring and turning over is at a high temperature and cannot be used directly. It needs to be cooled to below 50 degrees Celsius before it can be used. Foundry sand that is too hot will cause deformation during lost foam casting and affect the performance of the casting. Therefore, a foundry sand cooling device is needed to cool the high-temperature foundry sand. Foundry sand cooling devices with low cooling efficiency will limit the recycling of foundry sand and prolong unnecessary waiting time during the casting process, which is a bottleneck restricting production speed. Improving the cooling efficiency of foundry sand can help manufacturers increase production efficiency.

[0003] Traditional cooling systems for old sand processing include horizontal fluidized bed sand cooling and vertical fluidized bed sand cooler. These sand processing cooling devices have complex structures, long cooling times, and low cooling efficiency, which restricts production efficiency. Some water-cooled cooling devices can easily cause the foundry sand to become damp, requiring it to be dried before it can be used again. Therefore, a circulating cooling device for foundry sand processing is proposed. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention proposes a circulating cooling device for casting sand treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a circulating cooling device for casting sand processing, comprising a feeding mechanism, a discharging mechanism below the feeding mechanism, and multiple cooling mechanisms stacked between the feeding mechanism and the discharging mechanism. Each cooling mechanism includes a housing four, and multiple heat-conducting pipes arranged longitudinally at equal intervals are provided inside the housing four. After the casting sand material is fed into the multiple heat-conducting pipes, circulating coolant is injected into the housing four to cool the heat-conducting pipes and the casting sand material therein. A feeding mechanism is installed at the bottom of the discharging mechanism, and a spreading mechanism is installed inside the feeding mechanism. The spreading mechanism is used to spread the casting sand material accumulated in the uppermost cooling mechanism so that it enters the multiple heat-conducting pipes.

[0006] Preferably, a top plate and a bottom plate are fixedly installed inside the housing, and a cooling cavity is formed between the top plate and the bottom plate. An outlet and an inlet are fixedly installed through the sides of the housing, respectively. The outlet is located above the inlet. The tops of the multiple heat pipes are flush with the top of the top plate. Among the multiple cooling mechanisms stacked in the same vertical direction, the two heat pipes are attached end to end.

[0007] Preferably, the discharge mechanism includes a housing three, which is fixedly connected to a housing four located at the bottom. A rectangular plate is fixedly installed inside the housing three, and multiple discharge strip holes are linearly distributed on the rectangular plate. Multiple rectangular tubes are fixedly installed at the bottom of the rectangular plate, and the multiple rectangular tubes are respectively connected to the corresponding discharge strip holes. A semi-circular box is rotatably installed below each of the multiple rectangular tubes. A rotating shaft is fixedly installed at both ends of the semi-circular box. The rotating shaft passes through the housing three and is rotatably connected to the housing three. A swing arm is fixedly installed at the end of the rotating shaft extending outside the housing three. The same adjusting rod is hinged to the swing arm on the same side. Two crossbars are fixedly installed on one side of the housing three. Telescopic rods are rotatably installed on the top of the two crossbars. The piston rod ends of the two telescopic rods are respectively hinged to the corresponding adjusting rods.

[0008] Preferably, a gathering cover is fixedly installed on the top of the rectangular plate, the top of the gathering cover is in contact with the bottom of the bottom plate in the lowest cooling mechanism, and a triangular strip is provided between two adjacent discharge strip holes, the bottom of the triangular strip being fixedly connected to the top of the rectangular plate.

[0009] Preferably, the feeding mechanism includes a housing 1 and a plurality of triangular strips 1. The housing 1 is fixedly connected to the top of the housing 4 located in the uppermost cooling mechanism. The plurality of triangular strips 1 are evenly distributed and fixed to the top of the top plate located in the uppermost cooling mechanism. A top cover is fixedly installed on the top of the housing 1. A housing 2 is fixedly installed through the top of the top cover. A plurality of protective rods are fixedly installed inside the housing 2.

[0010] Preferably, the housing has perforations on both sides. The spreading mechanism includes linear modules fixed on both sides of the housing and a circular shaft that passes through the two perforations and moves within the two perforations. The two linear modules are used to synchronously drive the circular shaft to move within the two perforations. A circular tube is fixedly sleeved on the circular shaft. The two ends of the circular tube are slidably connected to the inner walls of the housing on both sides. A scraper is fixedly installed on the side of the circular tube.

[0011] Preferably, the scraper has a V-shaped bevel at the bottom, and the V-shaped bevel has multiple V-shaped grooves distributed at equal intervals. The multiple V-shaped grooves are slidably connected to the corresponding triangular strips. Sealing brush strips are fixedly installed on the bottom inner wall of the perforation, and the two sealing brush strips are staggered.

[0012] Preferably, a mounting plate is fixedly installed on the slider of the linear module, and a swing plate is rotatably installed on the side of the mounting plate away from the housing. A guide rod is slidably installed through the swing plate. Cam plates are fixedly installed at both ends of the circular shaft. The bottom ends of the two guide rods are respectively hinged to the corresponding cam plates. A baffle is fixedly installed at the top of the guide rod. A spring that is slidably sleeved on the guide rod is fixedly installed between the baffle and the swing plate.

[0013] Preferably, two gear rings are rotatably sleeved on the circular shaft, the housing is located between the two gear rings, and two racks are fixedly installed on both sides of the housing. The two racks are centrally symmetrically distributed. The circular shaft and the gear rings are connected by a one-way bearing. The inner ring of the one-way bearing is fixedly sleeved on the circular shaft, and the outer ring of the one-way bearing is fixedly connected to the inner wall of the gear ring.

[0014] Preferably, the feeding mechanism includes a feeding hopper fixedly connected to the bottom of the housing, the bottom of the feeding hopper is provided with a valve, and four support legs arranged in a circular array are fixedly installed on the side of the feeding hopper.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention accelerates the cooling of foundry sand by placing the foundry sand material to be cooled into multiple heat-conducting pipes arranged longitudinally at equal intervals, thereby increasing the contact area with the circulating coolant. Furthermore, the heat-conducting pipes separate the foundry sand material from the circulating coolant, ensuring that the foundry sand material remains dry after cooling.

[0016] The spreading mechanism can spread the foundry sand material in each heat pipe, preventing the foundry sand material to be cooled from accumulating on top of the heat pipe and ensuring that the foundry sand material to be cooled can smoothly enter each heat pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a circulating cooling device for casting sand processing proposed in this invention. Figure 2 This is a side sectional view of a circulating cooling device for casting sand processing proposed in this invention; Figure 3 This is a side sectional view of the cooling mechanism in a circulating cooling device for casting sand processing proposed in this invention. Figure 4 This is a side sectional view of the discharge mechanism in a circulating cooling device for casting sand processing proposed in this invention; Figure 5 for Figure 4 A magnified structural diagram of part A in the middle; Figure 6 This is a side sectional view of the feeding mechanism and spreading mechanism in a circulating cooling device for casting sand processing proposed in this invention. Figure 7 This is a schematic diagram of the spreading mechanism in a circulating cooling device for casting sand processing proposed in this invention; Figure 8 for Figure 7 Enlarged structural diagram of section B.

[0018] In the diagram: 1. Feeding mechanism; 2. Discharging mechanism; 3. Cooling mechanism; 4. Unloading mechanism; 5. Spreading mechanism; 11. Shell 1; 111. Perforation; 12. Top cover; 13. Shell 2; 14. Triangular strip 1; 15. Protective rod; 21. Shell 3; 22. Rectangular plate; 23. Discharge bar hole; 24. Rectangular tube; 25. Semicircular box; 26. Rotating shaft; 27. Swing arm; 28. Adjusting rod; 29. ​​Cross frame; 210. Telescopic rod; 211. Gathering hood; 212. Triangular bar 2; 31. Shell 4; 32. Top plate; 33. Bottom plate; 34. Cooling cavity; 35. Heat pipe; 36. Liquid outlet; 37. Liquid inlet; 41. Hopper; 42. Valve; 43. Support leg; 51. Linear module; 52. Mounting plate; 53. Round tube; 54. Scraper; 541. V-shaped bevel; 542. V-shaped groove; 55. Round shaft; 56. Gear ring; 57. Gear rack; 58. Swing plate; 59. Guide rod; 510. Cam plate; 511. Baffle; 512. Spring; 513. One-way bearing. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please refer to Figures 1-8 This invention provides a technical solution: a circulating cooling device for casting sand processing, including a feeding mechanism 1, a discharging mechanism 2 below the feeding mechanism 1, and multiple cooling mechanisms 3 stacked between the feeding mechanism 1 and the discharging mechanism 2. The cooling mechanism 3 includes a housing 31, and multiple heat-conducting pipes 35 arranged longitudinally at equal intervals are provided inside the housing 31. After the casting sand material is fed into the multiple heat-conducting pipes 35, circulating coolant is injected into the housing 31 to cool the heat-conducting pipes 35 and the casting sand material inside them. A feeding mechanism 4 is installed at the bottom of the discharging mechanism 2, and a spreading mechanism 5 is installed inside the feeding mechanism 1. The spreading mechanism 5 is used to spread the casting sand material accumulated in the uppermost cooling mechanism 3 so that it enters the multiple heat-conducting pipes 35.

[0021] Furthermore, this application Figure 1 and Figure 2 The indicated number of cooling mechanisms 3 is two.

[0022] like Figure 3As shown, a top plate 32 and a bottom plate 33 are fixedly installed inside the housing 31, and a cooling cavity 34 is formed between the top plate 32 and the bottom plate 33. An outlet 36 and an inlet 37 are fixedly installed through the housing 31 on both sides, respectively. The outlet 36 is located above the inlet 37. The tops of multiple heat pipes 35 are flush with the top of the top plate 32. Among the multiple cooling mechanisms 3 stacked in the same vertical direction, two heat pipes 35 are attached end to end.

[0023] The discharge mechanism 2 includes a housing 3 21, which is fixedly connected to a housing 4 31 located at the bottom. A rectangular plate 22 is fixedly installed inside the housing 3 21. Multiple discharge strip holes 23 are linearly distributed on the rectangular plate 22. Multiple rectangular tubes 24 are fixedly installed at the bottom of the rectangular plate 22. The multiple rectangular tubes 24 are respectively connected to the corresponding discharge strip holes 23. A semi-circular box 25 is rotatably installed below each of the multiple rectangular tubes 24. A rotating shaft 26 is fixedly installed at both ends of the semi-circular box 25. The rotating shaft 26 passes through the housing 3 21 and is rotatably connected to the housing 3 21. A swing arm 27 is fixedly installed at the end of the rotating shaft 26 extending outside the housing 3 21. The same adjusting rod 28 is hinged on the swing arm 27 on the same side. Two crossbars 29 are fixedly installed on one side of the housing 3 21. Telescopic rods 210 are rotatably installed on the top of the two crossbars 29. The piston rod ends of the two telescopic rods 210 are respectively hinged to the corresponding adjusting rods 28.

[0024] A gathering cover 211 is fixedly installed on the top of the rectangular plate 22. The top of the gathering cover 211 is in contact with the bottom of the bottom plate 33 in the lowest cooling mechanism 3. A triangular strip 212 is provided between two adjacent discharge strip holes 23. The bottom of the triangular strip 212 is fixedly connected to the top of the rectangular plate 22.

[0025] Furthermore, when the casting sand material enters the heat pipe 35 and the semi-circular box 25 is blocking the bottom opening of the rectangular tube 24, the casting sand material at the bottom of the heat pipe 35 will fall through the heat pipe 35 and, together with the inclined sides of the multiple triangular strips 212, fall into the multiple rectangular tubes 24. This part of the casting sand material can be ignored.

[0026] The feeding mechanism 1 includes a housing 11 and multiple triangular bars 14. The housing 11 is fixedly connected to the top of the housing 31 in the uppermost cooling mechanism 3. The multiple triangular bars 14 are evenly distributed and fixed to the top of the top plate 32 in the uppermost cooling mechanism 3. A top cover 12 is fixedly installed on the top of the housing 11. A housing 2 13 is fixedly installed through the top of the top cover 12. Multiple protective bars 15 are evenly distributed and fixedly installed inside the housing 2 13.

[0027] Both sides of the housing 11 are provided with perforations 111. The spreading mechanism 5 includes linear modules 51 fixed on both sides of the housing 11 and a circular shaft 55 that passes through the two perforations 111 and moves within the two perforations 111. The two linear modules 51 are used to synchronously drive the circular shaft 55 to move within the two perforations 111. A circular tube 53 is fixedly sleeved on the circular shaft 55. The two ends of the circular tube 53 are slidably connected to the inner walls of both sides of the housing 11. A scraper 54 is fixedly installed on the side of the circular tube 53.

[0028] The scraper 54 has a V-shaped bevel 541 at the bottom, and the V-shaped bevel 541 has multiple V-shaped grooves 542 distributed at equal intervals. The multiple V-shaped grooves 542 are slidably connected to the corresponding triangular strips 14. Sealing brush strips are fixedly installed on the bottom inner wall of the perforation 111. The two sealing brush strips are staggered and are made of metal to prevent casting sand material from leaking out of the perforation 111.

[0029] A mounting plate 52 is fixedly installed on the slider of the linear module 51. A swing plate 58 is rotatably installed on the side of the mounting plate 52 away from the housing 11. A guide rod 59 is slidably installed through the swing plate 58. Cam plates 510 are fixedly installed at both ends of the round shaft 55. The bottom ends of the two guide rods 59 are hinged to the corresponding cam plates 510. A baffle 511 is fixedly installed at the top of the guide rod 59. A spring 512 that is slidably sleeved on the guide rod 59 is fixedly installed between the baffle 511 and the swing plate 58.

[0030] Two gear rings 56 are rotatably sleeved on the round shaft 55. The housing 11 is located between the two gear rings 56. Two racks 57 are fixedly installed on both sides of the housing 11. The two racks 57 are centrally symmetrically distributed. The round shaft 55 and the gear rings 56 are connected by a one-way bearing 513. The inner ring of the one-way bearing 513 is fixedly sleeved on the round shaft 55, and the outer ring of the one-way bearing 513 is fixedly connected to the inner wall of the gear rings 56.

[0031] Furthermore, such as Figures 7-8 As shown, when the two linear modules 51 drive the circular tube 53 to move to the left, as the front gear ring 56 meshes with the corresponding rack 57, the gear ring 56 will drive the circular shaft 55 to rotate clockwise by half a turn. The circular tube 53 and the scraper 54 will follow the circular shaft 55 to rotate clockwise by half a turn in sync. Then, when the two linear modules 51 drive the circular shaft 55 to move to the right, since the front one-way bearing 513 has a one-way free rotation function, even if the front gear ring 56 passes the corresponding rack 57, the front gear ring 56 will only rotate freely and will not drive the circular shaft 55 to rotate. When the two linear modules 51 drive the circular tube 53 to move to the right, as the rear gear ring 56 meshes with the corresponding rack 57, the gear ring 56 will drive the circular shaft 55 to rotate counterclockwise by half a turn. The circular tube 53 and the scraper 54 will follow the circular shaft 55 to rotate counterclockwise by half a turn in sync. Then, when the two linear modules 51 drive the circular shaft 55 to move to the left, since the rear one-way bearing 513 has a one-way free rotation function, even when the rear gear ring 56 passes the corresponding rack 57, the rear gear ring 56 will only rotate idly and will not drive the circular shaft 55 to rotate.

[0032] Furthermore, such as Figures 7-8 As shown, in this state, the spreading mechanism 5 needs to make the round tube 53 move to the left first and then move back and forth. When the round tube 53 moves to the left first, the round shaft 55 drives the cam plate 510 to rotate clockwise by half a turn. At this time, the connection point between the cam plate 510 and the one-way bearing 513 deflects from the left movement of the round shaft 55 to the right side of the round shaft 55. Then, as the round tube 53 moves to the right, the round shaft 55 drives the cam plate 510 to rotate counterclockwise by half a revolution. At this time, the connection point between the cam plate 510 and the one-way bearing 513 deflects from the rightward movement of the round shaft 55 to the left side of the round shaft 55.

[0033] like Figure 8 As shown, when the cam plate 510 reciprocates half a revolution to the left and right following the circular shaft 55, the swing plate 58 will rotate synchronously. With the cooperation of the spring 512, the bottom end of the scraper 54 always stays in contact with the top plate 32 below, and at this time the scraper 54 is tilted and set on the top of the top plate 32 below.

[0034] Furthermore, as the scraper 54 moves left and right, it can scrape over the top of the top plate 32, spreading out the casting sand material accumulated on the top of the top plate 32 and allowing it to enter the corresponding heat pipe 35. In conjunction with multiple triangular strips 14, the accumulated casting sand material can slide down the inclined sides of the triangular strips 14 into the heat pipes 35 on both sides. When the cooling chamber 34 moves to the left and right sides of the top plate 32, the cooling chamber 34 can be flipped to prevent the casting sand material from accumulating on both sides of the top plate 32.

[0035] The feeding mechanism 4 includes a feeding hopper 41 fixedly connected to the bottom of the housing 21. The bottom of the feeding hopper 41 is provided with a valve 42, and four support legs 43 arranged in a circular array are fixedly installed on the side of the feeding hopper 41.

[0036] In this embodiment: When in use, the crushed powdered foundry sand is put into the housing 2 13. The foundry sand then passes through the housing 2 13 and the protective rod 15 and falls into the uppermost cooling mechanism 3. Part of the foundry sand falls into the corresponding heat pipe 35, and the other part of the foundry sand is piled up on the top plate 32 in the uppermost cooling mechanism 3. Then, the spreading mechanism 5 scrapes and spreads the foundry sand piled on the top plate 32 so that all of it enters the corresponding heat pipe 35. Then, coolant is injected into the inlet 37 of the cooling mechanism 3. After the coolant enters the cooling chamber 34, it is discharged from the outlet 36. During the process of the coolant flowing through the cooling chamber 34, it can carry away the heat transferred from the casting sand material to the heat pipe 35 through heat conduction, thereby achieving the purpose of cooling the casting sand material in the heat pipe 35. like Figures 4-5 As shown, after the cooling mechanism 3 cools the casting sand material, the piston rods of the two telescopic rods 210 are controlled to retract synchronously. The telescopic rods 210 drive the adjusting rod 28 to move to the right. The adjusting rod 28 then drives the corresponding rotating shaft 26 to rotate clockwise through multiple swing arms 27. The rotating shaft 26 then drives the semi-circular box 25 to rotate clockwise, causing the semi-circular box 25, which was originally blocked below the rectangular tube 24, to deflect open. After that, the casting sand material above passes through the rectangular tube 24 and falls into the lower hopper 41. Subsequently, the cooled casting sand material in the hopper 41 can be discharged by opening the valve 42.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A circulating cooling device for casting sand treatment, comprising a feeding mechanism (1), characterized in that: Below the feeding mechanism (1) is a discharging mechanism (2). Between the feeding mechanism (1) and the discharging mechanism (2) are multiple cooling mechanisms (3) stacked together. The cooling mechanism (3) includes a housing (31). The housing (31) contains multiple heat-conducting pipes (35) arranged longitudinally at equal intervals. After the casting sand material is fed into the multiple heat-conducting pipes (35), circulating coolant is injected into the housing (31) to cool the heat-conducting pipes (35) and the casting sand material inside them. The bottom of the discharging mechanism (2) is equipped with a feeding mechanism (4). The feeding mechanism (1) is equipped with a spreading mechanism (5). The spreading mechanism (5) is used to spread the casting sand material piled in the uppermost cooling mechanism (3) so that it enters the multiple heat-conducting pipes (35).

2. The foundry sand treatment circulating cooling device according to claim 1, characterized in that: A top plate (32) and a bottom plate (33) are fixedly installed inside the housing (31). A cooling cavity (34) is formed between the top plate (32) and the bottom plate (33). An outlet (36) and an inlet (37) are fixedly installed through the housing (31) on both sides. The outlet (36) is located above the inlet (37). The tops of multiple heat pipes (35) are flush with the top of the top plate (32). Among the multiple cooling mechanisms (3) stacked in the same vertical direction, the two heat pipes (35) are attached end to end.

3. The foundry sand treatment circulating cooling device according to claim 1, characterized in that: The discharge mechanism (2) includes a housing three (21), which is fixedly connected to a housing four (31) located at the bottom. A rectangular plate (22) is fixedly installed inside the housing three (21). The rectangular plate (22) has multiple discharge strip holes (23) arranged linearly. Multiple rectangular tubes (24) are fixedly installed at the bottom of the rectangular plate (22). The multiple rectangular tubes (24) are respectively connected to the corresponding discharge strip holes (23). A semi-circular box (25) is rotatably installed below each of the multiple rectangular tubes (24). The two sides of the semi-circular box (25) are connected to each other. A rotating shaft (26) is fixedly installed at each end. The rotating shaft (26) passes through the housing three (21) and is rotatably connected to the housing three (21). A swing arm (27) is fixedly installed at the end of the rotating shaft (26) extending outside the housing three (21). The same adjusting rod (28) is hinged on the swing arm (27) on the same side. Two cross frames (29) are fixedly installed on one side of the housing three (21). A telescopic rod (210) is rotatably installed on the top of each of the two cross frames (29). The piston rod ends of the two telescopic rods (210) are respectively hinged to the corresponding adjusting rods (28).

4. The foundry sand treatment circulating cooling device according to claim 3, characterized in that: A gathering cover (211) is fixedly installed on the top of the rectangular plate (22). The top of the gathering cover (211) is in contact with the bottom of the bottom plate (33) in the lowest cooling mechanism (3). A triangular strip (212) is provided between two adjacent discharge strip holes (23). The bottom of the triangular strip (212) is fixedly connected to the top of the rectangular plate (22).

5. The foundry sand treatment circulating cooling device according to claim 1, characterized in that: The feeding mechanism (1) includes a housing (11) and multiple triangular bars (14). The housing (11) is fixedly connected to the top of the housing (31) in the uppermost cooling mechanism (3). The multiple triangular bars (14) are evenly distributed and fixed on the top of the top plate (32) in the uppermost cooling mechanism (3). A top cover (12) is fixedly installed on the top of the housing (11). A housing (2) is fixedly installed through the top of the top cover (12). Multiple protective rods (15) are evenly distributed inside the housing (2).

6. A circulating cooling device for casting sand treatment according to claim 5, characterized in that: Both sides of the housing (11) are provided with perforations (111). The spreading mechanism (5) includes linear modules (51) fixed on both sides of the housing (11) and a circular shaft (55) that passes through the two perforations (111) and moves within the two perforations (111). The two linear modules (51) are used to synchronously drive the circular shaft (55) to move within the two perforations (111). A circular tube (53) is fixedly sleeved on the circular shaft (55). The two ends of the circular tube (53) are slidably connected to the inner walls of both sides of the housing (11). A scraper (54) is fixedly installed on the side of the circular tube (53).

7. A circulating cooling device for casting sand treatment according to claim 6, characterized in that: The scraper (54) has a V-shaped bevel (541) at the bottom, and the V-shaped bevel (541) has multiple V-shaped grooves (542) distributed at equal intervals. The multiple V-shaped grooves (542) are slidably connected to the corresponding triangular strip (14). Sealing brush strips are fixedly installed on the bottom inner wall of the perforation (111), and the two sealing brush strips are staggered.

8. A circulating cooling device for casting sand treatment according to claim 6, characterized in that: A mounting plate (52) is fixedly installed on the slider of the linear module (51). A swing plate (58) is rotatably installed on the side of the mounting plate (52) away from the housing (11). A guide rod (59) is slidably installed through the swing plate (58). Cam plates (510) are fixedly installed at both ends of the round shaft (55). The bottom ends of the two guide rods (59) are respectively hinged to the corresponding cam plates (510). A baffle (511) is fixedly installed at the top of the guide rod (59). A spring (512) that is slidably sleeved on the guide rod (59) is fixedly installed between the baffle (511) and the swing plate (58).

9. A circulating cooling device for casting sand treatment according to claim 6, characterized in that: Two gear rings (56) are rotatably sleeved on the circular shaft (55). The housing (11) is located between the two gear rings (56). Two racks (57) are fixedly installed on both sides of the housing (11). The two racks (57) are centrally symmetrically distributed. The circular shaft (55) and the gear rings (56) are connected by a one-way bearing (513). The inner ring of the one-way bearing (513) is fixedly sleeved on the circular shaft (55), and the outer ring of the one-way bearing (513) is fixedly connected to the inner wall of the gear rings (56).

10. A circulating cooling device for casting sand treatment according to claim 3, characterized in that: The feeding mechanism (4) includes a feeding hopper (41) fixedly connected to the bottom of the housing (21). The bottom of the feeding hopper (41) is provided with a valve (42). The side of the feeding hopper (41) is fixedly installed with four support legs (43) arranged in a circular array.

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