A boiling cooling device for cylinder liner casting processing old sand

Abstract

The application discloses a boiling cooling device for old sand of cylinder liner casting processing, and relates to the technical field of cylinder liner casting, which comprises a boiling cooling bed, a mounting groove is formed in the lateral wall of the boiling cooling bed, the mounting groove penetrates the inner and outer lateral walls of the boiling cooling bed, a mounting plate is fixedly installed in the mounting groove, and the boiling cooling device further comprises a supporting frame, an aluminum plate, a cooling cavity box and a serpentine pipe. The supporting frame is fixedly installed on one side of the mounting plate close to the boiling cooling bed; the aluminum plate is fixedly installed on the top of the supporting frame; the cooling cavity box is fixedly installed on the bottom of the aluminum plate; and the serpentine pipe is fixedly penetrated in the lateral wall of the cooling cavity box. The old sand can be uniformly scattered through the fan-shaped reciprocating swing of the rectangular plate, the old sand is transversely spread, the uniformity of the boiling cooling stage is improved, and the old sand is prevented from being locally accumulated and deviated.

Description

Technical Field

[0001] This invention belongs to the field of cylinder liner casting technology, specifically relating to a boiling cooling device for processing used sand in cylinder liner casting. Background Technology

[0002] The boiling cooling device for used sand in cylinder liner casting can rapidly cool the high-temperature used sand after casting, reducing its temperature to the level required for process reuse. It is a key cooling device in the sand treatment system of the cylinder liner production line.

[0003] Patent publication number CN216938274U relates to a fluidized bed cooling system for used sand with good cooling effect. The system includes a machine tool with a fluidized bed plate inclined on the inner wall. A slidingly connected material-distributing plate is located above the higher end of the fluidized bed plate on the inner wall of the machine tool. Several rotatably connected material-distributing claws are located at the bottom of the material-distributing plate. A dispersing disc is fitted on the outer wall of the material-distributing claws. A rotating shaft is located at the top of the material-distributing claws. A rotating shaft is rotatably connected to the rotating shaft on one side of the rotating shaft on the top of the material-distributing plate. The rotating shaft is movably connected to the rotating shaft via a transmission assembly. A gear is fitted on the outer wall of the rotating shaft. A rack meshing with the gear is located above the material-distributing plate on the inner wall of the machine tool. This patent can distribute used sand that falls in the middle of the fluidized bed plate, evenly distributing it to both sides of the fluidized bed plate, preventing the used sand from accumulating in the middle part of the fluidized bed plate, improving the cooling efficiency of the used sand. Simultaneously, the material-distributing process can disperse the used sand, preventing it from sticking together and affecting the cooling operation.

[0004] In existing technologies, the old sand in the middle of the fluidized bed is dispersed by a material-dispersing plate, so that it is evenly distributed to both sides of the fluidized bed. This can effectively prevent the old sand from accumulating and clumping in the middle of the fluidized bed. However, the intermittent process of feeding the old sand first, then dispersing the old sand, and finally starting the fluidized bed is only suitable for batch fluidized bed treatment of old sand. It cannot be adapted to continuous feeding. During continuous feeding, the fluidized bed is always in working state. The newly added old sand will quickly enter the fluidized suspension state and it is difficult to spread it evenly and stably on the surface of the fluidized bed. At the same time, the high temperature old sand that is continuously fed lacks a pre-cooling process, which is not conducive to shortening the overall fluidized bed cooling time, resulting in a decrease in the smoothness and stability of the continuous feeding process. Summary of the Invention

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fluidized bed cooling device for used sand in cylinder liner casting to achieve a uniform distribution of the used sand.

[0006] According to an embodiment of the present invention, a fluidized bed cooling device for used sand in cylinder liner casting includes a fluidized bed cooling bed. An assembly groove is formed on the side wall of the fluidized bed cooling bed, the assembly groove penetrating the inner and outer side walls of the fluidized bed cooling bed. An assembly plate is fixedly installed in the assembly groove. The device further includes: a support frame, fixedly installed on the side of the assembly plate near the fluidized bed cooling bed; an aluminum plate, fixedly installed on the top of the support frame; a cooling chamber box, fixedly installed on the bottom of the aluminum plate; and a serpentine tube, fixedly penetrating the side wall of the cooling chamber box, extending through the assembly plate to the outside of the fluidized bed cooling bed. The serpentine tube is used to circulate cold water, and cold water circulates within the serpentine tube along the serpentine shape. The tube cavity continuously flows, and heat exchange through the tube wall forms a low-temperature cooling surface on the outer surface of the serpentine tube; the airflow distribution chamber is fixedly inserted through the cooling chamber on the side away from the aluminum plate, and three rows of equidistant nozzles are arranged on the side of the airflow distribution chamber near the serpentine tube; the air inlet pipe is fixedly inserted through the airflow distribution chamber on the side away from the serpentine tube, and extends through the assembly plate to the outside of the boiling cooling bed. The air inlet pipe is used to transport cooling airflow, the airflow distribution chamber is used to evenly distribute the cooling airflow, and the nozzles are used to spray cooling airflow in a set direction. The air inlet pipe introduces cooling airflow into the airflow distribution chamber, and the airflow distribution chamber evenly distributes the cooling airflow to each nozzle.

[0007] In some embodiments of the present invention, the aluminum plate is positioned directly below the feed inlet of the fluidized bed and is inclined toward the interior of the fluidized bed. The inclined aluminum plate guides the falling old sand, allowing the old sand to be transported along the aluminum plate into the fluidized bed.

[0008] In some embodiments of the present invention, the side wall of the support frame is provided with an exhaust groove, and the side wall of the cooling chamber is provided with an exhaust hole. The exhaust groove and the exhaust hole are used to discharge the hot air generated in the cooling chamber. The airflow after heat exchange is discharged from the cooling chamber through the exhaust hole and then discharged from the support frame through the exhaust groove.

[0009] In some embodiments of the present invention, a servo motor is fixedly installed on the side of the aluminum plate near the support frame. The output end of the servo motor passes through the aluminum plate, and a rectangular plate is fixedly installed on the output end of the servo motor. The rectangular plate is attached to the upper surface of the aluminum plate. The servo motor is used to drive the rectangular plate to perform fan-shaped reciprocating swing. As the old sand flows down along the aluminum plate, it continuously contacts the swinging rectangular plate and moves synchronously under the pushing and sweeping action of the rectangular plate.

[0010] In some embodiments of the present invention, the rectangular plate is provided with an auxiliary device for breaking up agglomerated old sand, and the auxiliary device is provided with a striking device for achieving vibration; the auxiliary device includes a shell, a conical rod and a convex rod, the shell is fixedly installed on the surface of the rectangular plate, the conical rod is fixedly installed on the side wall of the shell, the conical rod relies on its own conical structure to puncture and break up the agglomerated old sand, preventing a large amount of agglomerated old sand from entering the boiling cooling zone and affecting the cooling effect, and the convex rod is fixedly installed on the side of the shell away from the servo motor.

[0011] In some embodiments of the present invention, a fixing rod is fixedly installed on the surface of the aluminum plate, and an arc-shaped guide frame is fixedly installed on the circumferential surface of the fixing rod. An arc-shaped groove is formed on the surface of the arc-shaped guide frame, and the circumferential surface of the convex rod contacts the arc-shaped groove. The arc-shaped guide frame forms a precise guide for the movement trajectory of the convex rod through its own arc-shaped groove, effectively limiting the radial deviation of the convex rod. A limit ring is fixedly installed on the circumferential surface of the convex rod, and the limit ring contacts the upper surface of the arc-shaped guide frame.

[0012] In some embodiments of the present invention, the striking device includes a fixed tube, an impact block, a connecting tube, and a T-shaped circular block. The impact block collides with the T-shaped circular block, and the vibration generated by the collision is transmitted sequentially to the upper surface of the aluminum plate via the T-shaped circular block, the connecting tube, and the fixed rod. The fixed tube is fixedly installed on the circumferential surface of the convex rod, the impact block is fixedly installed on the inner wall of the fixed tube, the connecting tube is fixedly installed on the circumferential surface of the fixed rod, and the T-shaped circular block is fixedly installed on the inner wall of the connecting tube.

[0013] In some embodiments of the present invention, a support plate is fixedly installed on the surface of the aluminum plate. The support plate is fixedly connected to the circumferential surface of the arc-shaped guide frame. The support plate is used to reinforce the structural stability of the arc-shaped guide frame and plays a stable supporting role, effectively improving the overall structural stability.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention involves a low-temperature aluminum plate that is used for contact pre-cooling of the old sand, thereby reducing the temperature of the old sand in advance. By using the aluminum plate to pre-cool the high-temperature old sand in contact, the initial temperature of the old sand entering the boiling section is reduced, the cooling cycle of the old sand is shortened, and the aluminum plate is continuously cooled, which can prevent the aluminum plate from failing due to long-term contact with the high-temperature old sand. At the same time, the rectangular plate pushes and sweeps the old sand, realizing real-time dynamic adjustment of the flow direction of the old sand. Through the fan-shaped reciprocating swing of the rectangular plate, the old sand can be evenly dispersed and spread laterally, ensuring that the old sand is evenly distributed in the boiling cooling bed. This not only prevents local accumulation and flow deviation, but also improves the uniformity of the boiling cooling stage.

[0016] 2. In this invention, the conical rod breaks up clumps of old sand by puncturing its own conical structure. As the conical rod swings back and forth synchronously with the rectangular plate, a continuous breaking area is formed on the upper surface of the aluminum plate, effectively breaking up the clumps of old sand in contact, ensuring the stable operation of the subsequent boiling and cooling process. At the same time, the arc-shaped guide frame provides precise guidance for the movement trajectory of the convex rod through its own arc-shaped groove. The vertical limiting ring and the guidance of the arc-shaped guide frame work together to prevent the rectangular plate from shifting away from the servo motor, ensuring the stability of the rectangular plate's reciprocating swing.

[0017] 3. In this invention, the impact block collides with the T-shaped circular block, and the vibration generated by the collision is transmitted to the upper surface of the aluminum plate. Through the impact action at the end points of the arc-shaped groove by the convex rod, the aluminum plate is intermittently vibrated, which effectively prevents old sand from adhering to the upper surface of the aluminum plate and ensures that the old sand enters the boiling cooling process smoothly. At the same time, the support plate plays a stable supporting role, which effectively improves the overall stability of the arc-shaped guide frame. The support plate provides reliable support for the arc-shaped guide frame. With the fixed rod, the structural stability of the arc-shaped guide frame can be enhanced, and it can be prevented from deviating during long-term vibration and impact of old sand. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a boiling cooling bed according to an embodiment of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the support frame position according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the overall structure of the support frame according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the lower surface of the aluminum plate according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the cooling chamber according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure after the aluminum plate is hidden according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the overall structure of the rectangular plate according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure after the rectangular plate and the casing are separated according to an embodiment of the present invention.

[0026] Figure label:

[0027] 1. Boiling cooling bed; 2. Assembly plate; 3. Support frame; 4. Aluminum plate; 5. Cooling chamber box; 6. Servo tube; 7. Airflow distribution chamber box; 8. Inlet pipe; 9. Servo motor; 10. Rectangular plate; 21. Housing; 22. Conical rod; 23. Convex rod; 24. Fixing rod; 25. Arc-shaped guide frame; 26. Limiting ring; 31. Fixing tube; 32. Impact block; 33. Connecting tube; 34. T-shaped round block; 35. Support plate. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0029] like Figure 1 - Figure 8 As shown, one embodiment of the present invention is: a fluidized bed cooling device for used sand in cylinder liner casting, comprising a fluidized bed 1, an assembly groove provided on the side wall of the fluidized bed 1, the assembly groove penetrating the inner and outer side walls of the fluidized bed 1, an assembly plate 2 fixedly installed in the assembly groove, and further comprising: a support frame 3, the support frame 3 fixedly installed on the side of the assembly plate 2 near the fluidized bed 1; an aluminum plate 4, the aluminum plate 4 fixedly installed on the top of the support frame 3; a cooling chamber box 5, the cooling chamber box 5 fixedly installed on the bottom of the aluminum plate 4; and a serpentine tube 6, the serpentine tube 6 fixedly penetrating the side wall of the cooling chamber box 5, the serpentine tube 6 penetrating the assembly plate 2 and extending to the outside of the fluidized bed 1, the serpentine tube 6 being used for circulation. The cooling chamber 5 is filled with cold water; the airflow distribution chamber 7 is fixedly inserted through the cooling chamber 5 on the side away from the aluminum plate 4, and three rows of equidistant air nozzles are provided on the side of the airflow distribution chamber 7 near the serpentine tube 6; the air inlet pipe 8 is fixedly inserted through the airflow distribution chamber 7 on the side away from the serpentine tube 6, and extends through the assembly plate 2 to the outside of the boiling cooling bed 1. The air inlet pipe 8 is used to transport cooling airflow, the airflow distribution chamber 7 is used to evenly distribute the cooling airflow, and the air nozzles are used to spray cooling airflow in a set direction. The cooling airflow is continuously sprayed onto the aluminum plate 4 through the air nozzles to continuously cool the aluminum plate 4, which can prevent the aluminum plate 4 from cooling failure due to long-term contact with high-temperature old sand.

[0030] The aluminum plate 4 is positioned directly below the feed inlet of the fluidized bed 1. The aluminum plate 4 is tilted towards the inside of the fluidized bed 1. By positioning the aluminum plate 4 directly below the feed inlet, the space occupied is reduced while ensuring full contact between the old sand and the aluminum plate 4.

[0031] The side wall of the support frame 3 is provided with an exhaust groove, and the side wall of the cooling chamber box 5 is provided with an exhaust hole. The exhaust groove and the exhaust hole are used to discharge the hot air generated in the cooling chamber box 5. Through the stable circulation of airflow in the cooling chamber box 5, the air pressure inside the cooling chamber box 5 is kept within a safe and stable range.

[0032] A servo motor 9 is fixedly installed on the side of the aluminum plate 4 near the support frame 3. The output end of the servo motor 9 passes through the aluminum plate 4. A rectangular plate 10 is fixedly installed on the output end of the servo motor 9. The rectangular plate 10 is attached to the upper surface of the aluminum plate 4. The servo motor 9 is used to drive the rectangular plate 10 to swing back and forth in a fan shape. Through the back and forth swing of the rectangular plate 10 in a fan shape, the old sand can be evenly dispersed and spread out horizontally to ensure that the old sand is evenly distributed in the boiling cooling bed 1.

[0033] In this embodiment, before the old sand is added, cold water is circulated in the serpentine tube 6. The cold water flows continuously along the inner cavity of the serpentine tube 6, and heat exchange through the tube wall forms a low-temperature cooling surface on the outer surface of the serpentine tube 6. Then, the air inlet pipe 8 introduces cooling air into the airflow distribution chamber 7. The airflow distribution chamber 7 evenly distributes the cooling air to each nozzle. The cooling air is sprayed from three rows of equally spaced nozzles in a set direction. The sprayed cooling air first contacts the low-temperature area on the surface of the serpentine tube 6, and drives the low-temperature cold air to flow together to the bottom of the aluminum plate 4, where it exchanges heat with the aluminum plate 4 and continuously removes heat from the aluminum plate 4, keeping the aluminum plate 4 in a stable low-temperature state. The air after heat exchange is discharged from the cooling chamber 5 through the exhaust hole, and then discharged from the support frame 3 through the exhaust groove, ensuring that the air pressure inside the cooling chamber 5 is within a safe and stable range. When adding old sand, it is added directly above the feed inlet of the fluidized bed 1 and enters the fluidized bed 1 through the feed inlet. During the falling process, it comes into direct contact with the upper surface of the aluminum plate 4. The inclined aluminum plate 4 guides the falling old sand, allowing it to be transported along the aluminum plate 4 into the fluidized bed 1. During this transport process, the aluminum plate 4, which is kept at a low temperature, performs contact pre-cooling with the old sand, reducing the temperature of the old sand in advance. After pre-cooling, the old sand leaves the aluminum plate 4 and enters the fluidized cooling process. By using the aluminum plate 4 to perform contact pre-cooling on the high-temperature old sand, the initial temperature of the old sand entering the fluidized section is reduced, the cooling cycle of the old sand is shortened, and the aluminum plate 4 is continuously cooled, which can prevent the aluminum plate 4 from failing due to long-term contact with high-temperature old sand. While the aluminum plate 4 cools and guides the old sand, the servo motor 9 drives the rectangular plate 10 to swing back and forth in a fan shape on the upper surface of the aluminum plate 4. As the old sand flows down along the aluminum plate 4, it continuously contacts the swinging rectangular plate 10 and moves synchronously under the pushing and sweeping action of the rectangular plate 10. This achieves real-time dynamic adjustment of the flow direction of the old sand, effectively preventing the old sand from concentrating and falling into the middle area of ​​the boiling cooling bed 1 for boiling cooling. Through the fan-shaped back and forth swing of the rectangular plate 10, the old sand can be evenly dispersed and spread out laterally, ensuring that the old sand is evenly distributed in the boiling cooling bed 1. This not only prevents local accumulation and deviation but also improves the uniformity of the boiling cooling stage.

[0034] Please see Figure 1 - Figure 8Based on the above embodiments, in another embodiment of the present invention, an auxiliary device for breaking up clumps of old sand is provided on the rectangular plate 10, and a striking device for achieving vibration is provided on the auxiliary device; the auxiliary device includes a housing 21, a conical rod 22 and a convex rod 23. The housing 21 is fixedly installed on the surface of the rectangular plate 10, the conical rod 22 is fixedly installed on the side wall of the housing 21, and the convex rod 23 is fixedly installed on the side of the housing 21 away from the servo motor 9. By the conical rod 22 swinging synchronously with the rectangular plate 10, a continuous clump-breaking area is formed on the upper surface of the aluminum plate 4, effectively breaking up the clumps of old sand in contact.

[0035] A fixing rod 24 is fixedly installed on the surface of the aluminum plate 4. An arc-shaped guide frame 25 is fixedly installed on the circumferential surface of the fixing rod 24. An arc-shaped groove is opened on the surface of the arc-shaped guide frame 25. The circumferential surface of the convex rod 23 contacts the arc-shaped groove. A limit ring 26 is fixedly installed on the circumferential surface of the convex rod 23. The limit ring 26 contacts the upper surface of the arc-shaped guide frame 25. Through the vertical limiting of the limit ring 26 and the guiding of the arc-shaped guide frame 25, the rectangular plate 10 is prevented from shifting away from the side away from the servo motor 9.

[0036] The striking device includes a fixed tube 31, an impact block 32, a connecting tube 33, and a T-shaped circular block 34. The fixed tube 31 is fixedly installed on the circumferential surface of the convex rod 23, the impact block 32 is fixedly installed on the inner wall of the fixed tube 31, the connecting tube 33 is fixedly installed on the circumferential surface of the fixed rod 24, and the T-shaped circular block 34 is fixedly installed on the inner wall of the connecting tube 33. The intermittent vibration of the aluminum plate 4 is achieved by the impact action of the convex rod 23 when it moves to the end points of the arc-shaped groove, thus preventing old sand from adhering to the upper surface of the aluminum plate 4.

[0037] A support plate 35 is fixedly installed on the surface of the aluminum plate 4. The support plate 35 is fixedly connected to the circumferential surface of the arc-shaped guide frame 25. The support plate 35 is used to strengthen the structural stability of the arc-shaped guide frame 25 and provide reliable support for the arc-shaped guide frame 25. With the fixed rod 24, the structural stability of the arc-shaped guide frame 25 can be enhanced.

[0038] In this embodiment, during operation: the servo motor 9 drives the rectangular plate 10 to swing back and forth, and the rectangular plate 10 drives the housing 21 to move synchronously. The housing 21 further drives the conical rod 22 and the convex rod 23 to swing in linkage. When the conical rod 22 moves back and forth, it continuously collides with the old sand flowing along the upper surface of the aluminum plate 4. When it encounters clumps of old sand, the conical rod 22 uses its own conical structure to puncture and break the clumps of old sand, preventing a large number of clumps of old sand from entering the boiling cooling area and affecting the cooling effect. By the conical rod 22 swinging back and forth synchronously with the rectangular plate 10, a continuous clump-breaking area is formed on the upper surface of the aluminum plate 4, effectively breaking up the clumps of old sand in contact, and ensuring that the subsequent boiling cooling process proceeds stably. During the reciprocating swing of the convex rod 23 in sync with the rectangular plate 10, its circumferential surface is always in contact with the arc-shaped groove of the arc-shaped guide frame 25. The arc-shaped guide frame 25 provides precise guidance for the movement trajectory of the convex rod 23 through its own arc-shaped groove, effectively limiting the radial offset of the convex rod 23, thereby improving the stability of the reciprocating swing of the rectangular plate 10. At the same time, the convex rod 23 drives the limiting ring 26 to move synchronously. During the movement, the limiting ring 26 is always in contact with the upper surface of the arc-shaped guide frame 25, so that the limiting ring 26 forms a limiting constraint on the convex rod 23, precisely controlling the vertical position of the convex rod 23, ensuring that the convex rod 23 always stays in contact with the upper surface of the aluminum plate 4, thereby driving the rectangular plate 10 to reciprocate in stable contact with the surface of the aluminum plate 4. Through the vertical limiting of the limiting ring 26 and the guiding coordination of the arc-shaped guide frame 25, the side of the rectangular plate 10 away from the servo motor 9 is prevented from shifting, ensuring the stability of the reciprocating swing of the rectangular plate 10. As the convex rod 23 reciprocates with the rectangular plate 10, it drives the fixed tube 31 to move synchronously. The fixed tube 31 further drives the impact block 32 to reciprocate. When the convex rod 23 moves along the arc-shaped groove to one end, the fixed tube 31 drives the impact block 32 to move towards the T-shaped block 34. When the convex rod 23 moves to the end of the arc-shaped groove, the impact block 32 collides with the T-shaped block 34. The vibration generated by the collision is transmitted to the upper surface of the aluminum plate 4 through the T-shaped block 34, the connecting tube 33, and the fixed rod 24 in sequence. When the convex rod 23 moves in the opposite direction to the end of the arc-shaped groove, the impact block 32 on the other side repeats the above movement and collides with the T-shaped block 34 on the corresponding side to generate vibration. Through the impact of the convex rod 23 when it moves to the end of the arc-shaped groove, the intermittent vibration of the aluminum plate 4 is achieved, which effectively prevents the old sand from adhering to the upper surface of the aluminum plate 4 and ensures that the old sand enters the boiling cooling process smoothly. The vibration generated by the collision between the impact block 32 and the T-shaped circular block 34 will be synchronously transmitted to the arc-shaped guide frame 25. At this time, the support plate 35 fixed to the arc-shaped guide frame 25 plays a stable supporting role, effectively improving the stability of its overall structure. At the same time, in conjunction with the fixing rod 24 used to fix the arc-shaped guide frame 25, the swaying amplitude of the arc-shaped guide frame 25 during vibration can be effectively suppressed, ensuring its long-term reliability. The support plate 35 provides reliable support for the arc-shaped guide frame 25, and in conjunction with the fixing rod 24, the structural stability of the arc-shaped guide frame 25 can be enhanced, preventing it from shifting during long-term vibration and impact of old sand.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fluidized bed cooling device for used sand in cylinder liner casting, characterized in that, The system includes a boiling cooling bed (1), wherein an assembly groove is provided on the side wall of the boiling cooling bed (1), the assembly groove extends through the inner and outer side walls of the boiling cooling bed (1), and an assembly plate (2) is fixedly installed in the assembly groove. The system also includes: Support frame (3), which is fixedly installed on the side of the assembly plate (2) near the boiling cooling bed (1); Aluminum plate (4), said aluminum plate (4) is fixedly installed on the top of support frame (3); Cooling chamber box (5), the cooling chamber box (5) is fixedly installed on the bottom of aluminum plate (4); A serpentine tube (6) is fixedly inserted through the side wall of the cooling chamber box (5). The serpentine tube (6) extends through the assembly plate (2) to the outside of the boiling cooling bed (1). The serpentine tube (6) is used to circulate cold water. Airflow distribution chamber (7) is fixedly inserted through the cooling chamber (5) on the side away from the aluminum plate (4). Three rows of equidistant air nozzles are provided on the side of the airflow distribution chamber (7) near the serpentine tube (6). An air inlet pipe (8) is fixedly inserted through the airflow distribution chamber (7) on the side away from the serpentine pipe (6). The air inlet pipe (8) extends through the assembly plate (2) to the outside of the boiling cooling bed (1). The air inlet pipe (8) is used to transport cooling airflow. The airflow distribution chamber (7) is used to evenly distribute the cooling airflow. The nozzle is used to spray cooling airflow in a set direction. A servo motor (9) is fixedly installed on the side of the aluminum plate (4) near the support frame (3). The output end of the servo motor (9) passes through the aluminum plate (4). A rectangular plate (10) is fixedly installed on the output end of the servo motor (9). The rectangular plate (10) is attached to the upper surface of the aluminum plate (4). The servo motor (9) is used to drive the rectangular plate (10) to swing back and forth in a fan shape. The rectangular plate (10) is provided with an auxiliary device for breaking up agglomerated old sand, and the auxiliary device is provided with a striking device for achieving vibration. The auxiliary device includes a housing (21), a tapered rod (22), and a convex rod (23). The housing (21) is fixedly installed on the surface of the rectangular plate (10), the tapered rod (22) is fixedly installed on the side wall of the housing (21), and the convex rod (23) is fixedly installed on the side of the housing (21) away from the servo motor (9). A fixing rod (24) is fixedly installed on the surface of the aluminum plate (4). An arc-shaped guide frame (25) is fixedly installed on the circumferential surface of the fixing rod (24). An arc-shaped groove is opened on the surface of the arc-shaped guide frame (25). The circumferential surface of the convex rod (23) contacts the arc-shaped groove. A limiting ring (26) is fixedly installed on the circumferential surface of the convex rod (23). The limiting ring (26) contacts the upper surface of the arc-shaped guide frame (25).

2. The fluidized bed cooling device for used sand in cylinder liner casting as described in claim 1, characterized in that, The aluminum plate (4) is positioned directly below the feed inlet of the boiling cooling bed (1), and the aluminum plate (4) is set to be inclined towards the inside of the boiling cooling bed (1).

3. The fluidized bed cooling device for used sand in cylinder liner casting as described in claim 2, characterized in that, The side wall of the support frame (3) is provided with an exhaust groove, and the side wall of the cooling chamber box (5) is provided with an exhaust hole. The exhaust groove and the exhaust hole are used to discharge the hot air generated in the cooling chamber box (5).

4. The fluidized bed cooling device for used sand in cylinder liner casting as described in claim 3, characterized in that, The striking device includes a fixed tube (31), an impact block (32), a connecting tube (33), and a T-shaped round block (34). The fixed tube (31) is fixedly installed on the circumferential surface of the convex rod (23), the impact block (32) is fixedly installed on the inner wall of the fixed tube (31), the connecting tube (33) is fixedly installed on the circumferential surface of the fixed rod (24), and the T-shaped round block (34) is fixedly installed on the inner wall of the connecting tube (33).

5. The fluidized bed cooling device for used sand in cylinder liner casting as described in claim 4, characterized in that, A support plate (35) is fixedly installed on the surface of the aluminum plate (4). The support plate (35) is fixedly connected to the circumferential surface of the arc-shaped guide frame (25). The support plate (35) is used to reinforce the structural stability of the arc-shaped guide frame (25).

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