Cooling roller for precoated sand production

Abstract

The utility model relates to the technical field of precoated sand processing, and discloses a cooling roller for precoated sand production, which comprises a rolling cylinder, an adjusting mechanism for flow control is arranged at the top end of the rolling cylinder, a screening mechanism for multi-stage screening is arranged at the rear end of the rolling cylinder, and a cooling component is fixedly connected in the rolling cylinder. The adjusting mechanism comprises a feeding pipe, the bottom end of the feeding pipe is arranged at the top end of the rolling cylinder, a rotating column is rotationally connected to the interior of the feeding pipe, a plurality of fixing blocks are fixedly connected to the exterior of the rotating column, and a plurality of rotating blocks are rotationally connected to the rotating column. According to the precoated sand cooling device, the flow of precoated sand entering the cooling roller can be flexibly and accurately controlled, the problem that the precoated sand is not fully cooled due to the fact that the flow is too large is effectively solved, meanwhile, the situation that the production efficiency is affected due to the fact that the flow is too small can be prevented, and the product quality and the production benefit are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of coated sand processing technology, and in particular to a cooling roller for coated sand production. Background Technology

[0002] In the foundry industry, coated sand is a widely used molding material. It is composed of quartz sand, thermoplastic phenolic resin, hexamethylenetetramine, and calcium stearate, among other components. During the production of coated sand, after heating and mixing, it needs to be cooled to reach a suitable temperature for subsequent storage and use. With the increasing demands on the quality of coated sand in casting processes, such as precise control of particle size distribution and resin content, temperature control has become crucial. Cooling rollers were developed to better meet the needs of process improvements.

[0003] The main structure of the cooling drum includes a drum, rotating parts, drive parts, slag feeding device, slag discharging device, cooling parts, and electrical control device. Its working principle is to input high-temperature materials into the drum. Through the rotation of the drum and the action of the internal lifting plates, the materials are continuously thrown up and down inside the drum, and fully exchange heat with the cooling medium (such as air, water, etc.) inside the drum, thereby achieving the cooling of the materials.

[0004] In the current field of coated sand production, some cooling rollers have significant shortcomings in the cooling process of hot coated sand, making it difficult to quickly and accurately control the flow rate of hot coated sand. This defect leads to unstable flow rate of coated sand entering the cooling roller. When the flow rate is too high, the cooling medium cannot remove the heat of the coated sand in time, resulting in insufficient cooling of the coated sand, which in turn has many negative impacts on subsequent processing steps, such as affecting the strength and precision of the sand mold, and causing quality defects such as sand adhesion and sand holes on the surface of the casting. On the other hand, if the flow rate is too low, it will reduce production efficiency and cannot meet the needs of large-scale production. Therefore, a cooling roller for coated sand production is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a cooling roller for coated sand production, which aims to improve the problem that the cooling roller in the prior art is difficult to quickly and accurately control the flow rate of hot coated sand.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cooling drum for producing coated sand includes a rolling drum, the top of which is provided with an adjustment mechanism for flow control, the rear end of which is provided with a screening mechanism for multi-stage screening, and a cooling component is fixedly connected inside the rolling drum.

[0008] The adjusting mechanism includes a feed pipe, the bottom end of which is located at the top of the rolling drum. A rotating column is rotatably connected inside the feed pipe. Multiple fixed blocks are fixedly connected to the outside of the rotating column. Multiple rotating blocks are rotatably connected to the rotating column. Baffles are fixedly connected to the outside of the multiple fixed blocks and the rotating blocks. A transmission rod is fixedly connected to the opposite side of each fixed block and the rotating block. A drive assembly for driving is provided on the outside of the two transmission rods. A rotation assembly for rotating is provided on the outside of the rolling drum.

[0009] As a further description of the above technical solution:

[0010] The drive assembly includes a sliding block, with the two transmission rods slidably connected to the outside of the sliding block and a cylinder fixedly connected to the bottom end of the sliding block;

[0011] As a further description of the above technical solution:

[0012] The feed pipe has a sliding groove on its outside, the sliding block is slidably connected to the inside of the sliding groove, and the cylinder is fixedly connected to the outside of the feed pipe.

[0013] As a further description of the above technical solution:

[0014] The rotating assembly includes a gear groove, the inside of which is fixedly connected to the outside of the rolling cylinder. A fixed ring is rotatably connected to the outside of the rolling cylinder. A support platform is fixedly connected to the bottom end of the fixed ring. A motor is fixedly connected to the top end of the support platform. A transmission gear is fixedly connected to the drive end of the motor. The transmission gear is meshed with the gear groove.

[0015] As a further description of the above technical solution:

[0016] The screening mechanism includes multiple support legs, the front ends of the multiple support legs are located at the rear end of the rolling drum, three rotating shafts are rotatably connected to the adjacent sides of two of the support legs, screens are fixedly connected to the outside of the multiple rotating shafts, and connecting plates are fixedly connected to the outside of the multiple screens. A rotating rod is rotatably connected to the side of the connecting plate away from the screen, and a transmission component for driving is provided at the bottom end of one of the screens.

[0017] As a further description of the above technical solution:

[0018] The transmission assembly includes a second transmission rod, the top end of which is rotatably connected to the bottom end of one of the screens, the bottom end of which is rotatably connected to a second rotating rod, and the bottom end of which is fixedly connected to a second motor.

[0019] As a further description of the above technical solution:

[0020] The second motor is externally fixedly connected to one side of the two supporting legs, and the first rotating rod is externally rotatably connected to the front end of one of the supporting legs.

[0021] As a further description of the above technical solution:

[0022] The feed pipe is externally fixedly connected to the top end of the fixed ring, and the rotating block is externally rotatably connected to the inside of the feed pipe.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this invention, the smooth sliding of the sliding block within the sliding groove causes displacement of the connected transmission rod, which in turn drives the fixed block and the rotating block to rotate around the rotating column. This allows for precise adjustment of the opening size of the two baffle plates. This design enables flexible and accurate control of the coated sand flow rate entering the cooling drum when facing different production needs and coated sand flow requirements. It effectively avoids insufficient cooling of the coated sand due to excessive flow, while also preventing insufficient flow from affecting production efficiency. Through precise control of the baffle plate opening size, the stability and efficiency of the entire coated sand cooling production process are ensured, providing uniformly cooled coated sand material with a suitable flow rate for subsequent processes, greatly improving product quality and production efficiency.

[0025] 2. In this utility model, the connecting plate reciprocates and rises around the rotating rod as the rotation point, ensuring that the three screens move in a coordinated manner. This reciprocating motion of the screens allows coated sand particles of different sizes to be effectively separated according to the screen mesh size. This stable and regular screening action not only ensures that coated sand of various particle sizes can be accurately classified, improving the output quality of the product and enabling coated sand of different specifications to better meet the diverse production process requirements, but also greatly improves the efficiency of screening work and reduces material rework or waste caused by incomplete or inaccurate screening, providing a strong guarantee for the efficient and orderly operation of the entire coated sand production process. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a cooling roller for producing coated sand according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the sliding block of a cooling roller for coated sand production according to the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a screen for a cooling roller used in the production of coated sand, as proposed in this utility model.

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Rolling drum; 2. Feed pipe; 3. Rotating column; 4. Fixed block; 5. Rotating block; 6. Baffle plate; 7. Transmission rod one; 8. Sliding groove; 9. Sliding block; 10. Cylinder; 11. Gear groove; 12. Motor one; 13. Transmission gear; 14. Fixed ring; 15. Support platform; 16. Support leg; 17. Rotating shaft; 18. Screen; 19. Connecting plate; 20. Rotating rod one; 21. Transmission rod two; 22. Rotating rod two; 23. Motor two; 24. Cooling component. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 2 This utility model provides an embodiment of a cooling drum for coated sand production, comprising a rotating drum 1. The rotating drum 1, as the core of the entire cooling device, provides space for cooling and subsequent processing of the coated sand. It is made of a robust and high-temperature resistant metal material, maintaining good stability during long-term operation and ensuring the smooth progress of the entire cooling process. A flow control mechanism is installed at the top of the rotating drum 1, playing a crucial role in accurately controlling the flow rate of the coated sand entering the rotating drum 1, effectively avoiding numerous problems caused by unreasonable flow. A multi-stage screening mechanism is installed at the rear of the rotating drum 1, which can meticulously classify the cooled coated sand according to particle size, helping to improve the overall quality of the product. A cooling component 24 is fixedly connected inside the rotating drum 1, continuously providing a suitable cooling medium, such as cold air, thereby effectively cooling the coated sand inside the rotating drum 1 and ensuring that the coated sand achieves the expected cooling effect.

[0034] The regulating mechanism includes a feed pipe 2, which serves as the channel for the coated sand to enter the rotating drum 1. The feed pipe 2 is made of wear-resistant and smooth metal, facilitating the smooth flow of the coated sand into the rotating drum 1. Its bottom end is located at the top of the rotating drum 1. A rotating column 3 is rotatably connected inside the feed pipe 2. Multiple fixed blocks 4 are fixedly connected to the outside of the rotating column 3, and multiple rotating blocks 5 are rotatably connected to the rotating column 3. Baffle plates 6 are fixedly connected to the outside of the multiple fixed blocks 4 and rotating blocks 5. The rotating column 3, as a key rotating component for adjusting the opening angle of the baffle plate 6, plays a pivotal role in the entire flow control process. The baffle plate 6 can rotate flexibly under the action of relevant driving components, thereby driving other components to work in coordination. The fixed blocks 4 rotate under the drive of the rotating column 3, thereby transmitting power and pushing the baffle plate 6 to adjust its angle. The fixed blocks 4 are tightly connected to the rotating column 3, ensuring the stability and reliability of power transmission. The rotating block 5 also participates in the angle adjustment of the baffle plate 6, and works together with the fixed block 4 to change the position of the baffle plate 6. The external rotating block 5 is connected to the inside of the feed pipe 2, so that it can rotate within the space defined by the feed pipe 2.

[0035] The baffle plate 6 acts directly on the coated sand, controlling its flow rate by changing its opening and closing angle. The size and shape of the baffle plate 6 are rationally designed according to the size of the feed pipe 2 and the flow control requirements, ensuring accurate and effective blocking and release of coated sand at different flow rates. A transmission rod 7 is fixedly connected to the opposite side of both the fixed block 4 and the rotating block 5. The transmission rod 7 acts as a bridge connecting the fixed block 4, the rotating block 5, and the drive assembly, transmitting the power generated by the drive assembly to the fixed block 4 and the rotating block 5, ensuring the continuity and accuracy of power transmission. A drive assembly is installed outside the two transmission rods 7, providing power for the rotation of the fixed block 4 and the rotating block 5, and is a key component in adjusting the angle of the baffle plate 6. A rotating assembly is installed outside the rolling drum 1, allowing it to rotate stably and uniformly, ensuring that the coated sand inside can fully contact the cooling medium provided by the cooling component 24, improving the cooling effect.

[0036] The drive assembly includes a sliding block 9, which can slide within a sliding groove 8 opened on the outside of the feed pipe 2. The sliding block 9 drives the transmission rod 7 to move by its own sliding. The two transmission rods 7 are externally slidably connected to the inside of the sliding block 9. A cylinder 10 is fixedly connected to the bottom of the sliding block 9. The cylinder 10 serves as the power device for driving the sliding block 9 to slide. It pushes the sliding block 9 to slide within the sliding groove 8 through its extension and retraction action, thereby driving the entire adjustment mechanism to work. It has sufficient power output to ensure that it can stably drive the relevant components to perform actions under different working conditions. The cylinder 10 is externally fixedly connected to the outside of the feed pipe 2. A sliding groove 8 is opened on the outside of the feed pipe 2. The outside of the sliding block 9 is externally slidably connected to the inside of the sliding groove 8. The sliding groove 8 provides a defined track for the sliding block 9 to slide, ensuring that the sliding block 9 slides in a predetermined direction and avoiding situations such as deviation that affect the adjustment effect.

[0037] The rotating assembly includes a gear groove 11, which is fixedly connected to the outside of the rolling cylinder 1, providing a basic structure for the meshing of the transmission gear 13. This allows the transmission gear 13 to stably drive the rolling cylinder 1 to rotate. The inside of the gear groove 11 is fixedly connected to the outside of the rolling cylinder 1, and a fixing ring 14 is rotatably connected to the outside of the rolling cylinder 1. The fixing ring 14 supports and fixes the rolling cylinder 1, and also provides a relatively stable rotational environment for the rolling cylinder 1, ensuring the smoothness of the rolling cylinder 1 during rotation. A support platform 15 is fixedly connected to the bottom end of the fixing ring 14. The support platform 15 serves as the supporting foundation for the entire rotating assembly and components such as the motor 12, and must possess sufficient strength and stability. To support the weight of the components above and the forces during operation, a motor 12 is fixedly connected to the top of the support platform 15. As the core component that provides the rotational power for the rolling drum 1, the power and other parameters of the motor 12 are reasonably selected based on factors such as the size, weight, and expected rotational speed of the rolling drum 1 to ensure that it can stably drive the rolling drum 1 to rotate at a uniform speed. A transmission gear 13 is fixedly connected to the drive end of the motor 12. The transmission gear 13 is meshed with the gear groove 11. The motor 12 drives the transmission gear 13 to rotate. With the help of the meshing action, the rolling drum 1 can rotate stably around the fixed ring 14, thereby achieving full agitation of the internal coated sand and ensuring uniform cooling.

[0038] Reference Figure 1 , Figure 3 and Figure 4The screening mechanism includes multiple support legs 16, which provide stable support for the entire screening mechanism, ensuring that the screening operation is carried out in a stable state. The support legs 16 are made of high-strength metal materials, capable of withstanding various forces generated during the screening process and the weight of the screening mechanism itself. The front ends of the multiple support legs 16 are located at the rear end of the rotating drum 1. Three rotating shafts 17 are rotatably connected to the adjacent sides of two support legs 16. The rotating shafts 17 serve as rotating support components for the screen 18, allowing the screen 18 to rotate flexibly around them, ensuring that the screen 18 achieves reciprocating lifting and lowering motion under the drive of the transmission component. Screens 18 are fixedly connected to the outside of each of the multiple rotating shafts 17. The screen 18 is a key structure for screening coated sand particles. Its mesh size is designed according to different screening requirements; different screens 18 can have different mesh sizes. This enables the grading and screening of coated sand of different particle sizes. Multiple screens 18 are externally fixedly connected to a connecting plate 19, which connects the multiple screens 18 together, allowing them to move in tandem. When one screen 18 moves under the drive of the transmission component, the connecting plate 19 can drive the other screens 18 to perform corresponding actions synchronously, ensuring the consistency and coordination of the entire screening process. A rotating rod 20 is rotatably connected to the side of the connecting plate 19 away from the screen 18. The rotating rod 20 provides a rotation fulcrum for the reciprocating lifting and lowering motion of the screen 18, ensuring that the screen 18 can rotate stably around it. A transmission component for driving is set at the bottom of one of the screens 18. The transmission component serves as the power source for driving the screen 18 to move back and forth, and can accurately control the movement state of the screen 18 to achieve efficient screening.

[0039] The transmission assembly includes a second transmission rod 21, which connects the screen 18 and the second rotating rod 22. The second transmission rod 21 transmits the rotational motion of the second rotating rod 22 to the screen 18, causing the screen 18 to move accordingly. The top end of the second transmission rod 21 is rotatably connected to the bottom end of one of the screens 18, and the bottom end of the second transmission rod 21 is rotatably connected to the second rotating rod 22. The second rotating rod 22 rotates under the drive of the second motor 23, thereby driving the screen 18 to move via the second transmission rod 21. The bottom end of the second rotating rod 22 is fixedly connected to the second motor 23. 23. Motor 23 serves as the power core of the entire screening mechanism. Its power and speed parameters are reasonably selected based on factors such as the size and weight of the screen 18 and the expected screening efficiency to ensure that it can stably drive the screen 18 to perform effective screening. Motor 23 is externally fixedly connected to the adjacent side of the two support legs 16. Rotating rod 20 is externally rotatably connected to the front end of one of the support legs 16. Feed pipe 2 is externally fixedly connected to the top of the fixed ring 14. Rotating block 5 is externally rotatably connected to the inside of feed pipe 2.

[0040] Working Principle: Hot coated sand is injected into the rotating drum 1 through the feed pipe 2. At this point, the cylinder 10 is activated, pushing the sliding block 9 to slide inside the sliding groove 8. The sliding of the sliding block 9 causes the two transmission rods 7 to drive the fixed block 4 and the rotating block 5 to rotate respectively. The rotation of the fixed block 4 causes the rotating column 3 to slide inside the feed pipe 2, ultimately adjusting the opening angle of the two baffles 6. This controls the flow rate of the coated sand, preventing insufficient cooling due to excessive flow. When a stable supply of coated sand is required in subsequent molding stages, precise control of the cooling drum's feed flow rate ensures continuous and efficient molding. This not only reduces equipment downtime but also avoids energy waste and increased production costs caused by disrupted production schedules.

[0041] At this time, start motor 12. Motor 12 will drive transmission gear 13 to rotate, so that the rolling drum 1 rotates inside the fixed ring 14. With the continuous air supply of cooling component 24, the heat-coated sand inside the rolling drum 1 can be cooled.

[0042] The cooled coated sand falls into the inside of the screen 18. At this time, by starting the second motor 23, the second motor 23 will drive the second rotating rod 22 to rotate, thereby causing the second transmission rod 21 to drive the screen 18 to move back and forth. The screen 18 is connected to two other screens 18 through the connecting plate 19. Finally, multiple screens 18 move back and forth around the first rotating rod 20 as the rotation point, thereby achieving effective screening and classification of coated sand particles of different sizes, ensuring the output quality of the product and improving work efficiency.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling roller for producing coated sand, comprising a rotating drum (1), characterized in that: The top of the rolling drum (1) is provided with an adjustment mechanism for flow control, the rear end of the rolling drum (1) is provided with a screening mechanism for multi-stage screening, and a cooling component (24) is fixedly connected inside the rolling drum (1). The adjusting mechanism includes a feed pipe (2), the bottom end of which is located at the top of the rolling drum (1). A rotating column (3) is rotatably connected inside the feed pipe (2). Multiple fixed blocks (4) are fixedly connected to the outside of the rotating column (3). Multiple rotating blocks (5) are rotatably connected to the rotating column (3). Baffles (6) are fixedly connected to the outside of the multiple fixed blocks (4) and the rotating blocks (5). A transmission rod (7) is fixedly connected to the opposite side of the fixed block (4) and the rotating block (5). A drive assembly for driving is provided on the outside of the two transmission rods (7). A rotating assembly for rotating is provided on the outside of the rolling drum (1).

2. The cooling roller for coated sand production according to claim 1, characterized in that: The drive assembly includes a sliding block (9), with the two transmission rods (7) externally slidably connected inside the sliding block (9), and a cylinder (10) fixedly connected to the bottom end of the sliding block (9).

3. A cooling roller for coated sand production according to claim 2, characterized in that: The feed pipe (2) has a sliding groove (8) on its outside. The sliding block (9) is slidably connected to the inside of the sliding groove (8), and the cylinder (10) is fixedly connected to the outside of the feed pipe (2).

4. A cooling roller for coated sand production according to claim 1, characterized in that: The rotating assembly includes a gear groove (11), the inside of which is fixedly connected to the outside of the rolling cylinder (1). A fixed ring (14) is rotatably connected to the outside of the rolling cylinder (1). A support platform (15) is fixedly connected to the bottom end of the fixed ring (14). A motor (12) is fixedly connected to the top end of the support platform (15). A transmission gear (13) is fixedly connected to the drive end of the motor (12). The transmission gear (13) is meshed with the gear groove (11).

5. A cooling roller for coated sand production according to claim 1, characterized in that: The screening mechanism includes multiple support legs (16), the front ends of the multiple support legs (16) are located at the rear end of the rolling drum (1), three rotating shafts (17) are rotatably connected to the adjacent sides of two of the support legs (16), screens (18) are fixedly connected to the outside of the multiple rotating shafts (17), and connecting plates (19) are fixedly connected to the outside of the multiple screens (18). A rotating rod (20) is rotatably connected to the side of the connecting plate (19) away from the screens (18), and a transmission component for driving is provided at the bottom end of one of the screens (18).

6. A cooling roller for coated sand production according to claim 5, characterized in that: The transmission assembly includes a second transmission rod (21), the top end of which is rotatably connected to the bottom end of one of the screens (18), the bottom end of which is rotatably connected to a second rotating rod (22), and the bottom end of which is fixedly connected to a second motor (23).

7. A cooling roller for coated sand production according to claim 6, characterized in that: The motor 2 (23) is externally fixedly connected to one side of the two support legs (16), and the rotating rod 1 (20) is externally rotatably connected to the front end of one of the support legs (16).

8. A cooling roller for coated sand production according to claim 4, characterized in that: The feed pipe (2) is fixedly connected to the top of the fixed ring (14) on the outside, and the rotating block (5) is rotatably connected to the inside of the feed pipe (2) on the outside.

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