Lost foam casting drying device

Abstract

The utility model discloses a lost foam casting drying device. The lost foam casting drying device comprises a drying cabinet, an air blower, a heating system and a rotary heating mechanism, a heating rod and multiple layers of support strips are arranged in the drying cabinet, the air blower and the heating system work cooperatively, and uniform heating of the bottom and the side wall of the evanescent mode is achieved. The innovation point is that the rotary heating mechanism drives each layer of rotary plate to rotate through mechanical linkage (belt transmission, worm and gear transmission and gear meshing), so that the lost foam is uniformly heated in the drying process, the drying efficiency and the energy utilization rate are improved, rework is reduced, and the cost is reduced. And meanwhile, the device is provided with an exhaust pipe, lockable universal wheels, a waste bin, an air conveying pipe and the like, and practicability and convenience are enhanced.

Description

Technical Field

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

[0002] The Lost Foam Casting (LFC) drying unit is a type of drying equipment specifically designed for the lost foam casting process. Lost foam casting is a novel casting method that involves gluing together paraffin wax or foam patterns into a mold. After a series of treatments, the mold is buried in dry quartz sand and vibrated to form the mold. Casting is then performed under negative pressure, vaporizing the mold. Liquid metal then takes over the mold, solidifying and cooling to form the casting. The drying unit plays a crucial role in the lost foam casting process. Its primary function is to remove moisture and residual materials from the lost foam pattern before pouring, ensuring the quality and precision of the casting. The drying unit utilizes advanced drying technologies, such as heat pump drying and dehumidification technology, to quickly and efficiently dry the lost foam, improving production efficiency and product quality.

[0003] In the prior art, a drying device for lost foam casting with publication number "CN209110122U" includes a drying box body, a cover plate is slidably provided on the drying box body, a lifting ring is slidably connected in the drying box body, a hot air ring pipe is fixedly connected to the inner side of the lifting ring, a plurality of hot air holes are opened on the hot air ring pipe, a lifting ring is fixedly connected to a lifting rack, a rotating shaft is rotatably connected to the drying box body, and one end of the rotating shaft located in the drying box body is fixedly connected to a first gear meshing with the lifting rack; the double-sided gear rack rod of the utility model drives the lifting rack to move back and forth up and down through the second gear, the rotating shaft and the first gear, thereby realizing effective hot air spray drying, performing up and down jet drying, and having good hot air diffusion effect and good drying effect.

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

[0005] Traditional drying methods have the problem of uneven heat distribution, especially the side walls of the lost foam. Due to their relatively fixed position, they may not achieve the same heating effect as the bottom, resulting in uneven drying. Even if a drive motor is set in the existing technology to drive the lost foam mold to rotate, the simultaneous rotation of multiple drive motors will also waste energy. Utility Model Content

[0006] The purpose of the utility model is to provide a lost foam casting drying device 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 lost foam casting drying device comprises a drying cabinet, wherein a blower is fixedly connected to the bottom of one side of the drying cabinet, a drive motor is fixedly provided on the blower, and the blower is driven by the drive motor;

[0009] A first fixing plate is fixedly provided at the lower part of the drying cabinet, and a plurality of first heating rods are fixedly provided on the first fixing plate. A plurality of bracket strips arranged in layers are fixed on the side wall of the drying cabinet, and a support plate is fixedly provided on the bracket strips, and a plurality of through holes are opened on the support plate.

[0010] A second fixing plate is fixedly provided on the side wall of the drying cabinet, and a plurality of second heating rods are fixedly provided on the second fixing plate;

[0011] When the driving motor rotates, the blower generates wind, and the airflow is heated by passing through the first heating rod. The heated airflow passes through the support plate through the through hole to heat the bottom of the lost foam, and the second heating rod heats the side wall of the lost foam.

[0012] The support plate is also rotatably provided with a rotating heating mechanism.

[0013] Preferably, the rotary heating mechanism includes a rotating plate rotatably arranged on the support plate, the rotating plate also having a through hole, a gear ring arranged on the side wall of the rotating plate, a first shaft seat fixedly arranged on the inner wall of the drying cabinet, a first rotating rod rotatably arranged on the first shaft seat, a plurality of driving gears fixedly arranged on the first rotating rod, the number of the driving gears matches the level of the bracket bar, and the driving gears are meshed with the gear ring for transmission;

[0014] When the driving gear rotates, the ring gear engages with it and rotates, and the rotating plate and the ring gear rotate synchronously, realizing the rotation of the lost foam on the rotating plate, thereby achieving the purpose of uniformly heating the side wall of the lost foam by the second heating rod.

[0015] Preferably, the rotary heating mechanism further comprises a worm gear fixedly arranged on the first rotating rod, a second shaft seat is fixedly arranged on the outer wall of the drying cabinet, a second rotating rod is rotatably arranged on the second shaft seat, a worm meshing with the worm gear is fixedly arranged on the second rotating rod, a driven pulley is also fixedly sleeved on the second rotating rod, the shaft of the driving motor passes through the blower and is sleeved with a driving pulley, and a belt is connected between the driving pulley and the driven pulley;

[0016] When the driving motor rotates, it first drives the blower to blow air into the drying cabinet. At the same time, the driven pulley is driven to rotate through the active pulley, and the driven pulley drives the worm to rotate through the second rotating rod. The rotation of the worm drives the worm wheel meshing with it to rotate, and the rotation of the worm wheel drives the driving gear on the first rotating rod to rotate, and the driving gear drives the rotating plate to rotate through the ring gear.

[0017] Preferably, an exhaust pipe is fixed to the top of the drying cabinet.

[0018] Preferably, the drying cabinet is provided with a cabinet door which is rotatably mounted on the cabinet, and a handle is fixedly mounted on the cabinet door.

[0019] Preferably, a plurality of lockable universal wheels are fixedly provided on the bottom of the drying cabinet.

[0020] Preferably, a waste bin is detachably provided at the bottom of the drying cabinet.

[0021] Preferably, a gas pipe is fixedly provided on the side wall of the drying cabinet, the bottom end of the gas pipe does not exceed the first heating rod, and the bottom of the gas pipe is fixedly connected to a gas collecting hopper;

[0022] When the blower is working, the air flow is heated after passing through the first heating rod, and part of the hot air flow enters the gas pipe through the gas collecting hopper. The gas pipe directly transports this part of the hot air flow to the top wall of the drying cabinet, and this part of the hot air flow blows off the water vapor attached to the top wall of the drying cabinet.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The rotating heating mechanism effectively transmits the drive motor's power to each level within the drying cabinet through mechanical linkage. Specifically, while the motor drives the blower, it also independently drives each rotating plate through belt drive, worm gear transmission, and the meshing of the drive gear and ring gear. This mechanical linkage design ensures uniform and efficient heating of the lost foam during the drying process, significantly improving the heating effect on the side walls.

[0025] 2. The rotating heating mechanism rotates the EPC foam continuously during the drying process, achieving even heat distribution. This uniform heating not only improves drying efficiency but also avoids unnecessary energy waste. Furthermore, since the rotating heating mechanism ensures that all parts of the EPC foam are adequately heated, it also reduces rework due to insufficient drying, further saving time and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device of the utility model;

[0027] Figure 2 This is the main view of the utility model;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the blower area of the utility model;

[0029] Figure 4This is a schematic diagram of the three-dimensional structure of the engagement between the driving gear and the ring gear of the utility model;

[0030] Figure 5 It is a schematic diagram of the overall internal three-dimensional structure of the utility model.

[0031] In the figure: 1. Drying cabinet; 2. Cabinet door; 3. Handle; 4. Universal wheel; 5. Waste bin; 6. Blower; 7. Drive motor; 8. First fixed plate; 9. First heating rod; 10. Bracket bar; 11. Support plate; 12. Through hole; 13. Second fixed plate; 14. Second heating rod; 15. Rotating plate; 16. Ring gear; 17. First shaft seat; 18. First rotating rod; 19. Drive gear; 20. Worm gear; 21. Second shaft seat; 22. Second rotating rod; 23. Worm; 24. Driven pulley; 25. Driving pulley; 26. Belt; 27. Exhaust pipe; 28. Gas pipe; 29. Gas collecting hopper. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-5 , the utility model provides a technical solution: Example

[0034] A lost foam casting drying device, the core of which is a drying cabinet 1. The cabinet is made of high-strength, high-temperature-resistant materials, ensuring stable operation in high-temperature environments for a long time. A blower 6 is fixedly connected to the bottom of one side of the drying cabinet 1. The blower 6 is powered by a drive motor 7 fixed to the cabinet. When the motor is started, the internal transmission mechanism drives the blower 6 to rotate, generating a strong airflow.

[0035] A first fixing plate 8 is installed at the lower interior of the drying cabinet 1, on which multiple first heating rods 9 are evenly distributed. These heating rods rapidly heat up when powered, heating the surrounding air to a high temperature. Furthermore, the side walls of the drying cabinet 1 are equipped with multiple layers of support bars 10. Each support bar 10 is secured to a support plate 11, each of which is provided with through-holes 12. These through-holes 12 allow for smooth passage of high-temperature air, directly impacting the bottom of the lost foam placed on the support plates 11, achieving bottom-heating and drying.

[0036] In addition, a second fixing plate 13 is fixed to the side wall of the drying cabinet 1, on which are mounted a plurality of second heating rods 14. These heating rods directly heat the side wall of the lost foam, complementing the bottom heating to ensure that the lost foam is heated evenly and improve the drying efficiency.

[0037] In order to further improve the drying effect, especially in heating the side wall of the lost foam, the device is provided with a rotating heating mechanism.

[0038] A rotatable rotating plate 15 is provided on the support plate 11. The rotating plate 15 also has a through hole 12 for high-temperature airflow to pass through. A gear ring 16 is installed on the side wall of the rotating plate 15 for connecting to a subsequent drive mechanism.

[0039] A first shaft seat 17 is fixed to the inner wall of the drying cabinet 1, upon which a first rotating rod 18 is rotatably mounted. Multiple drive gears 19 are evenly distributed on the first rotating rod 18. The number of these gears matches the number of levels of the support bars 10 within the drying cabinet 1, ensuring that each level of the rotating plates 15 can be independently driven. The drive gears 19 tightly mesh with the ring gears 16 on the side walls of the rotating plates 15. When the drive gears 19 rotate, they drive the ring gears 16 and the rotating plates 15 to rotate synchronously.

[0040] To drive the rotation of the first rotating rod 18 and the drive gear 19, this device also incorporates a worm gear 20 and a worm gear 23 transmission mechanism. A worm gear 20 is fixedly mounted on one end of the first rotating rod 18, while a second shaft seat 21 is fixed to the outer wall of the drying cabinet 1, upon which a second rotating rod 22 is rotatably mounted. The second rotating rod 22 is not only secured with a worm gear 23, which meshes with the worm gear 20, but also fitted with a driven pulley 24. The shaft of the drive motor 7 extends through the blower 6 and is fitted with a driving pulley 25, which is connected to the driven pulley 24 by a belt 26. When the drive motor 7 rotates, it not only drives the blower 6 to generate airflow, but also rotates the driven pulley 24 and the second rotating rod 22 via the belt 26. The rotation of the second rotating rod 22 further drives the worm gear 23, which in turn rotates the meshed worm gear 20 and the first rotating rod 18. Finally, the driving gear 19 on the first rotating rod 18 drives the rotating plate 15 and the lost foam placed thereon to rotate through the ring gear 16, thereby achieving uniform heating of the side wall. Example

[0041] In terms of the extrusion of Example 1, this example makes some optimizations;

[0042] To more effectively exhaust the heat, water vapor, and potentially harmful gases generated during the drying process, an exhaust pipe 27 is fixed to the top of the drying cabinet 1. Made of high-quality stainless steel or a high-temperature-resistant alloy, exhaust pipe 27 ensures long-term stable operation in high-temperature environments without deformation or damage. The design of exhaust pipe 27 fully considers the principles of airflow dynamics. Its diameter and length are precisely calculated to ensure smooth and efficient airflow, thereby maintaining a fresh and dry environment within the drying cabinet 1.

[0043] To enhance user convenience, the drying cabinet 1 features a pivoting door 2 that opens and closes easily. Made of lightweight, high-strength materials, the door 2 reduces overall weight while ensuring structural stability. A handle 3, featuring a non-slip finish, is fixed to the door 2, ensuring easy grip and operation even in slippery or greasy working environments.

[0044] To enhance the flexibility and mobility of the drying cabinet 1, multiple lockable universal wheels 4 are installed on the bottom of the drying cabinet 1. These universal wheels 4 are made of wear-resistant and low-noise materials, allowing smooth movement on a variety of surfaces. Each universal wheel 4 is equipped with a reliable locking device, which can be locked with a simple step, preventing the drying cabinet 1 from sliding or tipping over when it is not needed.

[0045] To simplify the waste cleaning process and improve efficiency, a removable waste bin 5 is designed at the bottom of the drying cabinet 1. The waste bin 5 is sealed to prevent waste from leaking out and contaminating the environment. When waste needs to be cleaned, the user simply removes the waste bin 5 from the bottom of the drying cabinet 1, pours out the waste, and then reinstalls it, eliminating the need to enter the drying cabinet 1 for tedious cleaning work.

[0046] To further improve drying efficiency and reduce condensation on the top wall of the drying cabinet 1, an air pipe 28 is fixedly installed on the side wall of the drying cabinet 1. This air pipe 28 is made of high-temperature and corrosion-resistant materials to ensure stable operation even in harsh operating environments. The bottom of the air pipe 28 does not extend beyond the first heating rod 9. A gas collecting hopper 29 is fixedly connected to the bottom of the air pipe 28, which effectively collects and guides a portion of the hot air flow into the air pipe 28. When the blower 6 is operating, the air flow first passes through the first heating rod 9 and is fully heated. Subsequently, a portion of the hot air flow is collected by the gas collecting hopper 29 during its rise and guided into the air pipe 28. This high-temperature, high-speed hot air flow is then directly transported to the top wall of the drying cabinet 1 through the air pipe 28. Its high temperature and high speed characteristics quickly blow off any condensation, such as water vapor, adhering to the top wall, thereby maintaining a dry and clean environment within the drying cabinet 1.

[0047] Working Principle: During use, when the drive motor 7 is activated, it first drives the blower 6 through an internal transmission mechanism, generating a powerful airflow for the drying process. Simultaneously, a driving pulley 25 is mounted on the shaft of the drive motor 7 (which extends through the blower 6). This driving pulley 25 is connected to a driven pulley 24 on a second rotating rod 22 fixedly mounted on the outer wall of the drying cabinet 1 via a belt 26. Therefore, when the drive motor 7 rotates, it drives the driving pulley 25, which in turn rotates the driven pulley 24 and the second rotating rod 22 via the belt 26. The second rotating rod 22 is secured not only with the driven pulley 24 but also with a worm 23. This worm 23 meshes with a worm gear 20 at one end of a first rotating rod 18 fixedly mounted on the inner wall of the drying cabinet 1. Therefore, when the second rotating rod 22 rotates, the worm gear 23 drives the worm gear 20 and the connected first rotating rod 18 to rotate.

[0048] Multiple drive gears 19 are evenly distributed on the first rotating rod 18. The number of these gears matches the number of levels of the support bars 10 within the drying cabinet 1. Each drive gear 19 tightly meshes with a ring gear 16 on the sidewall of the rotating plate 15 on the corresponding support plate 11. When the first rotating rod 18 rotates, the drive gears 19 drive the ring gear 16 and the rotating plate 15 to rotate synchronously.

[0049] Since the rotating plate 15 is fixedly connected to the gear ring 16 and the rotating plate 15 has through holes 12 to allow high-temperature airflow to pass through, when the rotating plate 15 rotates, the lost foam placed on the rotating plate 15 also rotates. In this way, the side walls of the lost foam can be evenly heated, further improving the drying effect.

[0050] 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 lost foam casting drying device, comprising a drying cabinet (1), characterized in that: A blower (6) is fixedly connected to the bottom of one side of the drying cabinet (1), a drive motor (7) is fixedly provided on the blower (6), and the blower (6) is driven by the drive motor (7); A first fixing plate (8) is fixedly provided at the lower interior of the drying cabinet (1), a plurality of first heating rods (9) are fixedly provided on the first fixing plate (8), a plurality of support bars (10) arranged in layers are fixedly provided on the side wall of the drying cabinet (1), a support plate (11) is fixedly provided on the support bar (10), and a plurality of through holes (12) are provided on the support plate (11); A second fixing plate (13) is fixedly provided on the side wall of the drying cabinet (1), and a plurality of second heating rods (14) are fixedly provided on the second fixing plate (13); When the driving motor (7) rotates, the blower (6) generates wind force, and the airflow is heated by passing through the first heating rod (9). The heated airflow passes through the support plate (11) through the through hole (12) to heat the bottom of the lost foam, and the second heating rod (14) heats the side wall of the lost foam; A rotating heating mechanism is also rotatably provided on the support plate (11).

2. The lost foam casting drying device according to claim 1, characterized in that: The rotating heating mechanism includes a rotating plate (15) rotatably arranged on the support plate (11), the rotating plate (15) also having a through hole (12), a gear ring (16) being arranged on the side wall of the rotating plate (15), a first shaft seat (17) being fixedly arranged on the inner wall of the drying cabinet (1), a first rotating rod (18) being rotatably arranged on the first shaft seat (17), a plurality of driving gears (19) being fixedly arranged on the first rotating rod (18), the number of the driving gears (19) matching the level of the bracket bar (10), and the driving gears (19) meshing with the gear ring (16) for transmission; When the driving gear (19) rotates, the ring gear (16) engages with it and rotates, and the rotating plate (15) and the ring gear (16) rotate synchronously, realizing the rotation of the lost foam on the rotating plate (15), thereby achieving the purpose of uniformly heating the side wall of the lost foam by the second heating rod (14).

3. The lost foam casting drying device according to claim 2, characterized in that: The rotary heating mechanism further comprises a worm gear (20) fixedly arranged on the first rotating rod (18); a second shaft seat (21) is fixedly arranged on the outer wall of the drying cabinet (1); a second rotating rod (22) is rotatably arranged on the second shaft seat (21); a worm (23) meshing with the worm gear (20) is fixedly arranged on the second rotating rod (22); a driven pulley (24) is also fixedly sleeved on the second rotating rod (22); a shaft of the driving motor (7) passes through the blower (6) and is sleeved with a driving pulley (25); a belt (26) is connected between the driving pulley (25) and the driven pulley (24); When the driving motor (7) rotates, it first drives the blower (6) to blow air into the drying cabinet (1). At the same time, the driven pulley (24) is driven to rotate through the driving pulley (25). The driven pulley (24) drives the worm (23) to rotate through the second rotating rod (22). The rotation of the worm (23) drives the worm wheel (20) meshing with it to rotate. The rotation of the worm wheel (20) drives the driving gear (19) on the first rotating rod (18) to rotate. The driving gear (19) drives the rotating plate (15) to rotate through the ring gear (16).

4. The lost foam casting drying device according to claim 3, characterized in that: An exhaust pipe (27) is fixed to the top of the drying cabinet (1).

5. The lost foam casting drying device according to claim 3, characterized in that: The drying cabinet (1) is rotatably provided with a cabinet door (2), and the cabinet door (2) is fixedly provided with a handle (3).

6. The lost foam casting drying device according to claim 2, characterized in that: A plurality of lockable universal wheels (4) are fixedly provided on the bottom of the drying cabinet (1).

7. The lost foam casting drying device according to claim 1, characterized in that: A waste bin (5) is detachably provided at the bottom of the drying cabinet (1).

8. The lost foam casting drying device according to claim 3, characterized in that: An air delivery pipe (28) is fixedly provided on the side wall of the drying cabinet (1), the bottom end of the air delivery pipe (28) does not exceed the first heating rod (9), and the bottom of the air delivery pipe (28) is fixedly connected to a gas collecting hopper (29); When the blower (6) is working, the air flow is heated by passing through the first heating rod (9), and part of the hot air flow enters the air delivery pipe (28) through the air collecting hopper (29). The air delivery pipe (28) directly delivers this part of the hot air flow to the top wall of the drying cabinet (1), and the water vapor attached to the top wall of the drying cabinet (1) is blown off by this part of the hot air flow.

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