Sand airing device for lost foam casting

Abstract

The utility model discloses a sand airing device for lost foam casting. The sand airing device comprises a support, a fan box, a heating box, a pipeline box, a drying box and the like. The device generates airflow through the fan, the airflow is uniformly guided into the drying box after being heated by the heating box, and meanwhile, the linkage assembly realizes synchronous rotation of the drying frame and the fan wheel, so that the hot airflow uniformly penetrates through a molding sand layer, and the drying efficiency is improved. The device is compact in structure, easy and convenient to operate, capable of rapidly fixing and disassembling the drying frame, stable, reliable, safe, environmentally friendly, high in adaptability and the like. The sand drying device effectively solves the problems that a traditional sand drying mode is low in drying efficiency, complex in operation and the like, and a better and more efficient molding sand drying solution is provided for lost foam casting production.

Description

Technical Field

[0001] The utility model relates to the technical field of sand drying equipment, in particular to a sand drying device for lost foam casting. Background Art

[0002] The sand drying device is a device specially used for drying sand samples or sandy soil. It aims to fully dehydrate the sand samples or sandy soil by drying them in the sun for subsequent use or processing.

[0003] In the prior art, a sand drying device for lost foam casting with publication number "CN219130680U" comprises an outer shell, a feed hopper is provided on the upper outer side of the outer shell, a discharge hopper is provided on the lower outer side of the outer shell, a spiral feeding pipe is provided inside the outer shell, one end of the spiral feeding pipe passes through the outer shell and is connected to the motor, and further comprises a first cooling pipe, a first cooling pipe is provided on the outer side of the outer shell, a first water outlet pipe is provided on the upper outer side of the first cooling pipe, a first water inlet pipe is provided on the lower outer side of the first cooling pipe, and a filter box is provided at the bottom of the discharge hopper; the utility model can cool the molding sand after casting during transportation through the setting of the first cooling pipe, and screen the molding sand through the setting of the vibration motor of the filter screen, and can cool the molding sand that meets the screening requirements through the setting of the cooling group, thereby improving the cooling efficiency of the molding sand and reducing the labor intensity of workers.

[0004] However, the existing technology still has major deficiencies, such as:

[0005] The existing technology only dries the molding sand through simple airflow or heat source, lacks a mechanism to make the molding sand fully contact with the hot airflow and dry it evenly, resulting in low drying efficiency. Utility Model Content

[0006] The purpose of the utility model is to provide a sand drying device for lost foam casting to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A sand drying device for lost foam casting, comprising a bracket, on which a fan box, a heating box, a pipe box and a drying box are fixedly arranged, the fan box, the heating box, the pipe box and the drying box are fixedly connected in sequence, a sealing door is rotatably provided on the drying box, a driving motor is fixedly provided on the fan box, a rotating shaft is rotatably provided on the shaft of the driving motor, a fan wheel is fixedly provided on the rotating shaft, the fan wheel is rotatably provided in the fan box, a heating pipe is fixedly provided in the heating box, a connecting plate is fixedly provided at the connection between the heating box and the pipe box, a plurality of through holes are opened on the connecting plate, a plurality of air ducts are fixedly connected to the through holes, the air ducts pass through the pipe box and extend to the drying box position;

[0009] A vertically arranged rotating rod is rotatably provided in the drying box, and a plurality of drying frames are detachably provided on the rotating rod;

[0010] When drying the sand, the operator places the molding sand in the drying frame, and then places the drying frame on the rotating rod, and starts the driving motor and the heating tube. The driving motor rotates to drive the fan wheel to rotate, and the heating tube generates heat. The fan wheel heats the airflow through the heating tube and blows it into the air duct. The air duct blows the airflow into the drying box to dry the molding sand in the drying frame.

[0011] A linkage assembly is provided between the rotating shaft and the rotating rod.

[0012] Preferably, the linkage assembly includes a driving pulley fixedly arranged on a rotating shaft, the rotating rod passes through the bottom wall of the drying box, a worm gear is fixedly arranged at the bottom of the rotating rod, a plurality of rotating seats are fixedly arranged on the bracket, a rotating rod is rotatably arranged in the rotating seat, a worm matching the worm gear is fixedly arranged on the rotating rod, a driven pulley is fixedly arranged at one end of the rotating rod, and the driving pulley and the driven pulley are connected by a belt;

[0013] When the driving motor rotates to drive the fan wheel to rotate, the rotating shaft drives the driving pulley to rotate, and the driving pulley drives the driven pulley to rotate through the belt, and the driven pulley drives the rotating rod to rotate, and the rotating rod drives the rotating rod to rotate through the worm gear and the worm, and the rotation of the rotating rod drives the drying frame to rotate, so that the hot air flow in the air guide pipe can better dry the molding sand in the drying frame.

[0014] Preferably, a plurality of positioning seats are fixedly provided on the rotating rod, positioning holes are fixedly provided on the positioning seats, a positioning rod is fixedly provided on the bottom wall of the drying frame, the positioning rod matches the positioning hole, and a mounting groove is provided on the drying frame;

[0015] During use, the operator fixes the drying seat on the positioning seat by inserting the positioning rod into the positioning hole.

[0016] Preferably, a protective shell is fixedly provided on the bracket, and the protective shell is provided on the outside of the belt.

[0017] Preferably, a plurality of lockable universal wheels are fixedly provided on the bottom of the bracket.

[0018] Preferably, one side of the drying box is fixedly connected to an exhaust pipe.

[0019] Preferably, the exhaust port of the exhaust pipe is arranged upward, and a filter is fixedly provided on the exhaust pipe.

[0020] Preferably, a heat insulation board is fixedly provided on the side wall of the heating box.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The linkage assembly achieves synchronized rotation of the blower wheel and the rotating rod through the ingenious coordination of the drive pulley, belt, driven pulley, rotating rod, worm gear, and other components. This design allows the drying frame and the molding sand inside to rotate slowly with the flow of air, ensuring that the hot air can penetrate the molding sand layer more evenly and improve drying efficiency.

[0023] 2. The design of the linkage components makes the structure of the entire sand drying device more compact, and the layout of each component is reasonable and orderly. This not only saves space but also improves the overall aesthetics of the equipment.

[0024] 3. The powerful airflow generated by the fan box and the stable heat source provided by the heating box achieve rapid and uniform drying of the molding sand. This not only improves the drying efficiency, but also ensures the best performance of the molding sand in the lost foam casting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device of the utility model;

[0026] Figure 2 This is a front cross-sectional view of the utility model;

[0027] Figure 3 This is a three-dimensional cross-sectional view of the utility model;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the linkage assembly of the utility model;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the positioning seat of the utility model.

[0030] In the figure: 1. bracket; 2. fan box; 3. heating box; 4. pipe box; 5. drying box; 6. sealing door; 7. drive motor; 8. rotating shaft; 9. fan wheel; 10. heating pipe; 11. connecting plate; 12. through hole; 13. air guide pipe; 14. rotating rod; 15. drying frame; 16. driving pulley; 17. worm gear; 18. rotating seat; 19. rotating rod; 20. worm; 21. driven pulley; 22. belt; 23. positioning seat; 24. positioning hole; 25. positioning rod; 26. mounting slot; 27. protective shell; 28. lockable universal wheel; 29. ​​exhaust pipe; 30. filter; 31. heat insulation board. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-5 , the utility model provides a technical solution:

[0033] A sand drying device for lost foam casting is designed to provide an efficient and convenient solution for drying molding sand to ensure the best performance of the molding sand during the lost foam casting process.

[0034] The sand drying system primarily consists of a frame, fan housing, heating box, ducting box, and drying box. The frame, serving as the supporting structure for the entire system, is constructed from durable metal to ensure stability and load-bearing capacity. The fan housing, heating box, ducting box, and drying box are sequentially attached to the frame, forming a compact and efficient drying system.

[0035] As the supporting foundation of the entire sand drying system, the bracket is welded from high-strength steel to ensure the stability and load-bearing capacity of the device. The structural design of the bracket fully considers the installation position and layout of each functional box to facilitate subsequent assembly and maintenance.

[0036] The fan housing is tightly fixed to one end of the bracket, with its interior space designed specifically for the fan wheel. A drive motor is mounted on the top or side of the fan housing. The motor's output shaft is connected to the rotating shaft via a coupling or direct connection. The rotating shaft passes horizontally through the fan housing and is secured to the fan wheel. When the drive motor is activated, the rotating shaft drives the fan wheel to rotate at high speed, generating a powerful airflow.

[0037] The heating box is located adjacent to the fan box, securely connected via a tightly sealed connector. Multiple heating tubes are evenly spaced within the box, typically electrically heated to quickly generate and maintain the desired temperature. A connecting plate, precisely drilled with holes, is placed between the heating box and the ducting box. These holes are positioned to align with the layout of the subsequent air ducting.

[0038] The duct box, located between the heating and drying boxes, serves as an airflow channel. Its interior is equipped with air ducts corresponding to the holes in the connecting plate. These ducts are made of high-temperature and corrosion-resistant materials to ensure that airflow is not contaminated or lost during transmission. After passing through the connecting plate, the ducts extend along the inner wall of the duct box and ultimately pass through the side walls or bottom of the drying box to enter its interior.

[0039] The drying box is the core component of the sand drying system. Its structural design fully considers the uniform distribution of airflow and the thorough drying of the molding sand. Sealed doors are installed on the top or side of the drying box to facilitate the operator's insertion and removal of the drying frame. A rotating rod is vertically installed in the center of the drying box. The bottom of the rotating rod is connected to the bottom wall of the drying box via a bearing, allowing for free rotation. Multiple locating seats are evenly distributed on the rotating rod, each with a locating hole for securing the drying frame.

[0040] The drying frame, which holds the molding sand, has positioning rods at its bottom that align with the positioning holes in the positioning base. Simply inserting the rods into the holes allows the drying frame to be quickly secured and removed from the rotating rod. The drying frame also features mounting slots for easy placement on the rotating rod.

[0041] To achieve synchronous rotation of the blower wheel and the rotating rod, a linkage assembly is installed in the device. A drive pulley is fixed to the end of the rotating shaft, while a worm gear is fixed to the bottom of the rotating rod. A rotating seat is mounted on the bracket, and a rotating rod is rotatably installed in the rotating seat. A worm and a driven pulley that match the worm gear are fixed to the rotating rod. The driving pulley and the driven pulley are connected by a high-strength belt. When the drive motor drives the blower wheel to rotate, the rotating shaft rotates synchronously and drives the drive pulley to rotate, which in turn drives the driven pulley and the rotating rod through the belt. The worm on the rotating rod interacts with the worm gear at the bottom of the rotating rod to achieve rotation of the rotating rod. The slow rotation of the rotating rod drives the rotation of the drying frame and the molding sand inside it, allowing the hot air flow to penetrate the sand layer more evenly, improving drying efficiency.

[0042] To ensure safe operation and convenient maintenance of the device, a protective shell is installed on the bracket to cover the belt drive part; the bottom is equipped with lockable universal wheels to facilitate the movement and positioning of the device; an upward exhaust pipe is set on one side of the drying box and is equipped with a filter to prevent dust from overflowing; the side wall of the heating box is installed with an insulation board to reduce heat loss and improve energy utilization efficiency.

[0043] Working principle: During the use of this utility model,

[0044] The operator first places the molding sand in the drying frame, and then inserts the drying frame into the positioning seat on the rotating rod in the drying box through the positioning rod at the bottom of the drying frame to ensure that the drying frame is firmly fixed on the rotating rod.

[0045] The operator starts the drive motor and heater. Once the drive motor starts, the shaft on its axis rotates, which in turn drives the fan wheel fixed to the shaft. Simultaneously, the heater begins to generate heat.

[0046] The driving pulley on the shaft rotates as the shaft rotates and is connected to the driven pulley via a belt, which rotates accordingly.

[0047] The driven pulley is attached to the rotating rod, and the worm gear on the rotating rod mates with the worm wheel at the bottom of the rotating rod in the drying box. When the driven pulley rotates, the belt drives the rotating rod, which in turn rotates the worm gear. The interaction between the worm gear and the worm wheel causes the rotating rod to rotate as well.

[0048] Since the drying frame is fixed on the rotating rod, the rotation of the rotating rod will drive the drying frame to rotate together. In this way, the molding sand in the drying frame can be dried more evenly.

[0049] The airflow generated by the rotating fan wheel is heated by the heating pipe. This hot air then flows into the drying box through the holes in the connecting plate and the air duct. As the drying frame rotates driven by the rotating rod, the hot air can be blown evenly onto the molding sand in the drying frame, achieving rapid drying.

[0050] When the sand is dried, the operator turns off the drive motor and heating tube, opens the sealed door of the drying box, removes the drying frame and the sand for subsequent processing. At the same time, the interior of the drying box can be cleaned and maintained to ensure efficiency and effectiveness for the next use.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand drying device for lost foam casting, comprising a bracket (1), characterized in that: The bracket (1) is fixedly provided with a fan box (2), a heating box (3), a pipe box (4) and a drying box (5); the fan box (2), the heating box (3), the pipe box (4) and the drying box (5) are fixedly connected in sequence; a sealing door (6) is rotatably provided on the drying box (5); a driving motor (7) is fixedly provided on the fan box (2); a rotating shaft (8) is rotatably provided on the shaft of the driving motor (7); a fan is fixedly provided on the rotating shaft (8); A fan wheel (9), the fan wheel (9) is rotatably arranged in the fan box (2), a heating pipe (10) is fixedly arranged in the heating box (3), a connecting plate (11) is fixedly arranged at the connection between the heating box (3) and the pipe box (4), a plurality of through holes (12) are opened on the connecting plate (11), a plurality of air ducts (13) are fixedly connected to the through holes (12), and the air ducts (13) pass through the pipe box (4) and extend to the position of the drying box (5); A vertically arranged rotating rod (14) is rotatably provided in the drying box (5), and a plurality of drying frames (15) are detachably provided on the rotating rod (14); When drying the sand, the operator places the molding sand in the drying frame (15), and then places the drying frame (15) on the rotating rod (14), and starts the driving motor (7) and the heating tube (10). The driving motor (7) rotates to drive the fan wheel (9) to rotate, and the heating tube (10) generates heat. The fan wheel (9) heats the airflow through the heating tube (10) and blows it into the air guide pipe (13). The air guide pipe (13) blows the airflow into the drying box (5), and the molding sand in the drying frame (15) is dried. A linkage assembly is provided between the rotating shaft (8) and the rotating rod (14).

2. The sand drying device for lost foam casting according to claim 1, characterized in that: The linkage assembly comprises a driving pulley (16) fixedly arranged on a rotating shaft (8), the rotating rod (14) passes through the bottom wall of the drying box (5), a worm wheel (17) is fixedly arranged at the bottom of the rotating rod (14), a plurality of rotating seats (18) are fixedly arranged on the bracket (1), a rotating rod (19) is rotatably arranged in the rotating seat (18), a worm (20) matching the worm wheel (17) is fixedly arranged on the rotating rod (19), a driven pulley (21) is fixedly arranged at one end of the rotating rod (19), and the driving pulley (16) and the driven pulley (21) are connected by a belt (22); When the driving motor (7) rotates to drive the fan wheel (9), the rotating shaft (8) drives the driving pulley (16) to rotate, the driving pulley (16) drives the driven pulley (21) to rotate through the belt (22), the driven pulley (21) drives the rotating rod (19) to rotate, the rotating rod (19) drives the rotating rod (14) to rotate through the worm gear (17) and the worm (20), and the rotation of the rotating rod (14) drives the drying frame (15) to rotate, so that the hot air flow in the air guide pipe (13) can better dry the molding sand in the drying frame (15).

3. The sand drying device for lost foam casting according to claim 2, characterized in that: A plurality of positioning seats (23) are fixedly provided on the rotating rod (14), positioning holes (24) are fixedly provided on the positioning seats (23), a positioning rod (25) is fixedly provided on the bottom wall of the drying frame (15), the positioning rod (25) matches the positioning hole (24), and a mounting groove (26) is provided on the drying frame (15); When in use, an operator inserts the positioning rod (25) into the positioning hole (24) to fix the drying seat on the positioning seat (23).

4. The sand drying device for lost foam casting according to claim 3, characterized in that: A protective shell (27) is fixedly provided on the bracket (1), and the protective shell (27) is provided on the outside of the belt (22).

5. The sand drying device for lost foam casting according to claim 2, characterized in that: A plurality of lockable universal wheels (28) are fixedly provided on the bottom of the bracket (1).

6. The sand drying device for lost foam casting according to claim 1, characterized in that: One side of the drying box (5) is fixedly connected to an exhaust pipe (29).

7. The sand drying device for lost foam casting according to claim 6, characterized in that: The exhaust port of the exhaust pipe (29) is arranged upward, and a filter screen (30) is fixedly arranged on the exhaust pipe (29).

8. The sand drying device for lost foam casting according to claim 1, characterized in that: A heat insulation board (31) is fixedly provided on the side wall of the heating box (3).

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