A microwave drying apparatus

Abstract

The utility model discloses a microwave drying equipment, including drying box, the inside installation of drying box has the inner bag, and the opening of inner bag end surface is hinged with sealing cover through hinge, in the utility model, through the lifting type metal shielding cover as the core shielding component of the design of inner bag open mouth, its section presents the isosceles trapezoidal structure and the size is greater than the inner bag, can fully and closely cover the open area of inner bag, forms the effective shielding barrier from space, combines the setting of multiple wave plates, and the gap between wave plates forms the channel similar to "labyrinth", and the energy is constantly consumed when microwave spreads in it, makes the microwave energy that can finally leak out greatly reduces, further improves the microwave shielding effect of metal shielding cover to the open mouth of inner bag, can maximum limit the microwave from the open mouth leak. Meanwhile, the metal shielding cover side corresponds the gap of inner bag and sets up, guarantees its smooth lifting movement at the same time, avoids the interference with inner bag.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a microwave drying device. Background Technology

[0002] In industrial production, microwave drying equipment is widely used for drying various materials due to its advantages such as high drying efficiency and high energy utilization. However, the microwave shielding problem at the open end of the inner tank of traditional microwave drying equipment has always been a difficult problem that needs to be solved in the industry.

[0003] Currently, some microwave drying equipment uses a fixed shielding structure. While this structure can block microwave leakage to some extent, it cannot be flexibly adjusted according to the needs of material handling, causing many inconveniences for operation. When handling materials, it is often necessary to disassemble the shielding components, which is not only time-consuming and labor-intensive, but also may lead to a decrease in the sealing performance of the shielding structure due to frequent disassembly, increasing the risk of microwave leakage. The shielding components of traditional equipment mostly require manual handling or operation. Since the shielding components are usually quite heavy, the operation process is not only labor-intensive, but improper operation may also damage the shielding components, further affecting the shielding effect and posing a potential threat to the personal safety of operators.

[0004] To address this issue, a microwave drying device is proposed, which features efficient microwave shielding at the open end of the inner liner, convenient operation, and high safety and reliability, thereby solving the problems mentioned in the background technology. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a microwave drying device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a microwave drying device, comprising a drying chamber, wherein an inner liner is installed inside the drying chamber, and a sealing cover is hinged to the opening at the end face of the inner liner. Microwave sources are installed at the upper and lower ends of the inner liner. Two uprights are welded to the top of the drying chamber, and transmission rods are respectively installed at the upper ends of the two uprights via bearing seats. A winding disc is fixed to the surface of the transmission rod, and a steel wire rope is wound around the inner side of the winding disc. A motor is fixed to the right side wall of the drying chamber by bolts, and a drive sprocket is fixed to the output end of the motor. A driven sprocket is fixed to the right end of the transmission rod, and a chain is engaged between the driven sprocket and the drive sprocket. Two T-shaped slide rails are welded to the front surface of the drying chamber, and a metal shield is slidably installed between the two T-shaped slide rails. Several corrugated plates are equidistantly installed on the inner side of the metal shield. Sliding sleeves that are slidably connected to the T-shaped slide rails are respectively provided on the left and right sides of the metal shield, and connecting ears for engaging with the steel wire rope are welded to the surface of the sliding sleeves.

[0007] As a further description of the above technical solution: the cross-section of the metal shielding cover is an isosceles trapezoidal structure, and the size of the metal shielding cover is larger than the size of the inner liner, and the side of the metal shielding cover is provided with a clearance notch corresponding to the inner liner.

[0008] As a further description of the above technical solution: a retaining strip is rotatably mounted on the surface of the sealing cover, and a connecting post and a bearing are provided between the retaining strip and the sealing cover; a U-shaped hook is provided on the side of the inner liner corresponding to the retaining strip.

[0009] As a further description of the above technical solution: both the left and right sides of the metal shielding cover are rotatably mounted with track wheels, and the track wheels are rolledly connected to the T-shaped slide rail.

[0010] As a further description of the above technical solution: the interior of the drying oven is constructed with a refractory material layer, and the refractory material layer is wrapped around the outside of the inner liner.

[0011] As a further description of the above technical solution: a T-shaped connection port is provided on the inner side of the sliding sleeve, and the T-shaped connection port is adapted to the contour of the T-shaped slide rail, and the gap between the sliding sleeve and the T-shaped slide rail is filled with grease.

[0012] This utility model has the following beneficial effects: In this invention, a liftable metal shielding cover serves as the core shielding component designed for the open area of ​​the inner liner. Its cross-section is an isosceles trapezoidal structure, and its size is larger than the inner liner, allowing it to fully and tightly cover the open area of ​​the inner liner, forming an effective spatial shielding barrier. Combined with multiple corrugated plates, the gaps between the plates create a maze-like channel through which microwaves propagate, continuously losing energy and significantly reducing the amount of microwave energy that can ultimately leak out. This further enhances the microwave shielding effect of the metal shielding cover at the open area of ​​the inner liner, maximizing the prevention of microwave leakage from the open area. Simultaneously, the side of the metal shielding cover has a clearance opening corresponding to the inner liner, ensuring smooth lifting and lowering movement while avoiding interference with the inner liner, ensuring the integrity of the shielding area, further strengthening the microwave shielding effect at the open area, and providing a solid guarantee for the safety of operators. In this invention, the metal shielding cover is slidably connected to the T-shaped slide rail at the front of the drying chamber via a sliding sleeve. Combined with a lifting transmission system consisting of a motor, drive sprocket, driven sprocket, chain, transmission rod, winding reel, and wire rope, automated lifting operation can be achieved. When materials need to be loaded or unloaded, starting the motor will drive the metal shielding cover to rise along the T-shaped slide rail, opening the inner chamber. During drying operations, it is then controlled to descend and cover the opening. The entire process eliminates the need for manual handling of the heavy shielding components, making operation convenient and allowing for rapid state switching, perfectly adapting to the dynamic shielding requirements at the opening during the drying process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a microwave drying device according to the present invention; Figure 2 This is a schematic diagram of the internal structure of a microwave drying device according to the present invention; Figure 3 A 3D diagram of the metal shielding cover; Figure 4 This is a 3D diagram of the T-shaped slide rail and the slide sleeve.

[0014] Legend: 1. Drying oven; 2. Inner liner; 3. Hook; 4. Sealing cover; 5. Locking strip; 6. T-shaped slide rail; 7. Metal shielding cover; 8. Upright pole; 9. Transmission rod; 10. Motor; 11. Drive sprocket; 12. Driven sprocket; 13. Chain; 14. Winding reel; 15. Refractory material layer; 16. Microwave source; 17. Steel wire rope; 18. Sliding sleeve; 19. Track wheel; 20. Connecting lug; 21. Corrugated plate; 22. Clearance notch. Detailed Implementation

[0015] 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.

[0016] According to an embodiment of the present invention, a microwave drying apparatus is provided.

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, a microwave drying device according to an embodiment of the present invention includes a drying chamber 1. An inner liner 2 is installed inside the drying chamber 1, and a sealing cover 4 is hinged to the opening on the end face of the inner liner 2. Microwave sources 16 are installed at both the upper and lower ends of the inner liner 2. Two uprights 8 are welded to the top of the drying chamber 1, and transmission rods 9 are respectively installed on the upper ends of the two uprights 8 via bearing seats. A winding disc 14 is fixed to the surface of the transmission rod 9, and a steel wire rope 17 is wound around the inner side of the winding disc 14. A motor 10 is fixed to the right side wall of the drying chamber 1 by bolts, and an active motor is fixed to the output end of the motor 10. A driven sprocket 12 is fixed to the right end of the sprocket 11 and the drive sprocket 9, and a chain 13 is meshed between the driven sprocket 12 and the drive sprocket 11. Two T-shaped slide rails 6 are welded to the front surface of the drying chamber 1, and a metal shield 7 is slidably installed between the two T-shaped slide rails 6. Several corrugated plates 21 are equidistantly installed on the inner side of the metal shield 7. Sliding sleeves 18 are respectively provided on the left and right sides of the metal shield 7, which are slidably connected to the T-shaped slide rails 6, and connecting ears 20 that are fastened to the steel wire rope 17 are welded to the surface of the sliding sleeves 18. This equipment uses the BDMDCS12 industrial microwave drying chamber. Its core structure includes the drying chamber 1, which serves as the outer shell and supporting foundation of the entire equipment, providing a stable installation and working environment for the internal components. The drying chamber 1 contains an inner liner 2, which is the main space for drying materials. The inner liner 2 is made of a high-temperature resistant metal material with good microwave conductivity, which can ensure that microwave energy acts on the materials efficiently. A sealing cover 4 is hinged to the opening at the end face of the inner liner 2. The sealing cover 4 can tightly close the opening of the inner liner 2, ensuring that the internal microwave environment is not disturbed by the outside during the drying process, and also reducing heat loss. Microwave sources 16 are installed at both the upper and lower ends of the inner liner 2. These microwave sources 16, as energy output devices, can generate microwaves of a specific frequency to provide energy for the drying of materials. Two uprights 8 are welded to the top of the drying chamber 1. The uprights 8 are made of high-strength steel and have good load-bearing capacity. A transmission rod 9 is installed at the upper end of each upright 8 via bearing seats. The bearing seats allow the transmission rod 9 to rotate flexibly. A winding disc 14 is fixed to the surface of the transmission rod 9. The winding disc 14 can rotate with the rotation of the transmission rod 9. A steel wire rope 17 is wound around its inner side. The steel wire rope 17 has high strength and flexibility and can be used to pull related components. A motor 10 is fixed to the right side wall of the drying oven 1 by bolts. The motor 10 provides power to the entire transmission system. A drive sprocket 11 is fixed to its output end, and a driven sprocket 12 is fixed to the right end of the transmission rod 9. A chain 13 is meshed between the driven sprocket 12 and the drive sprocket 11. When the motor 10 starts, the drive sprocket 11 drives the driven sprocket 12 to rotate through the chain 13, thereby causing the transmission rod 9 to rotate.Two T-shaped slide rails 6 are welded to the front surface of the drying oven 1. The structural design of the T-shaped slide rails 6 ensures the stable operation of the sliding components, and a metal shielding cover 7 is slidably installed between the two T-shaped slide rails 6. The metal shielding cover 7 can effectively shield microwaves and prevent microwave leakage from causing harm to the operator. Several corrugated plates 21 are equidistantly installed on the inner side of the metal shielding cover 7. The corrugated plate 21 is designed with a corrugated structure to increase the contact area with microwaves. When microwaves attempt to leak outward from the opening of the inner liner 2, they will first collide with the corrugated plate 21. Compared with a flat structure, the concave and convex shape of the corrugated plate 21 allows microwaves to be reflected and refracted more times on its surface, prolonging the propagation path of microwaves inside the shielding cover, thereby reducing the probability of microwaves breaking through the shielding cover and indirectly enhancing the blocking ability against leaking microwaves. The left and right sides of the metal shielding cover 7 are respectively provided with sliding sleeves 18 that are slidably connected to the T-shaped slide rail 6. The cooperation between the sliding sleeves 18 and the T-shaped slide rail 6 ensures that the metal shielding cover 7 can slide smoothly. The surface of the sliding sleeves 18 is welded with connecting ears 20 that are fastened to the steel wire rope 17. When the winding disc 14 rotates, the metal shielding cover 7 can be moved along the T-shaped slide rail 6 by the traction of the steel wire rope 17 and the connecting ears 20. In this patent, we only use the microwave source and motor 10 of the drying oven 1 without improving their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method can be adjusted and operated according to the requirements of their instruction manual, and will not be described in detail here. Please refer to Figure 2 and Figure 3 The metal shielding cover 7 has an isosceles trapezoidal cross-section, and its size is larger than that of the inner liner 2. Furthermore, the side of the metal shielding cover 7 has a clearance notch 22 corresponding to the inner liner 2. This structural design not only enhances the shielding effect but also better adapts to the shape of the inner liner 2. The larger size of the metal shielding cover 7 ensures complete coverage of the inner liner 2, guaranteeing effective microwave shielding from all directions. The clearance notch 22 is designed to prevent the metal shielding cover 7 from colliding with the inner liner 2 or other components during movement, ensuring the normal operation of the equipment.

[0018] Please refer to Figure 1 and Figure 2A retaining strip 5 is rotatably mounted on the surface of the sealing cover 4, and a connecting post and a bearing are provided between the retaining strip 5 and the sealing cover 4. A U-shaped hook 3 is provided on the side of the inner liner 2 corresponding to the retaining strip 5. The retaining strip 5 can rotate around the mounting point, and a connecting post and a bearing are provided between the retaining strip 5 and the sealing cover 4. The connecting post serves as a connection, and the bearing ensures the flexibility of the retaining strip 5's rotation. When the sealing cover 4 is closed, rotating the retaining strip 5 allows it to engage with the hook 3, which can firmly fix the sealing cover 4 and ensure the sealing of the inner liner 2.

[0019] Please refer to Figure 2 and Figure 3 The metal shield 7 is equipped with rotatable track wheels 19 on both the left and right sides, and the track wheels 19 are rotatably connected to the T-shaped slide rail 6. The track wheels 19 are made of wear-resistant material and are rotatably connected to the T-shaped slide rail 6. The track wheels 19 transform the sliding friction between the metal shield 7 and the T-shaped slide rail 6 into rolling friction, which greatly reduces the friction and makes the movement of the metal shield 7 smoother and less strenuous.

[0020] Please refer to Figure 2 The interior of the drying oven 1 is constructed with a refractory material layer 15, which wraps around the outside of the inner liner 2. The refractory material layer 15 is made of materials with excellent high-temperature resistance, such as refractory bricks or refractory castables. The main function of the refractory material layer 15 is to reduce heat transfer between the inner liner 2 and the outer shell of the drying oven 1, thereby achieving the effect of heat preservation and energy saving. At the same time, it can also protect the outer shell of the drying oven 1 from high temperatures.

[0021] Please refer to Figure 2 and Figure 4 The inner side of the sliding sleeve 18 has a T-shaped connection port, which is adapted to the contour of the T-shaped slide rail 6. The gap between the sliding sleeve 18 and the T-shaped slide rail 6 is filled with grease. This adaptation design ensures that the sliding sleeve 18 can be stably fitted onto the T-shaped slide rail 6 without shaking or falling off. The grease filling the gap between the sliding sleeve 18 and the T-shaped slide rail 6 reduces friction and wear between the sliding sleeve 18 and the T-shaped slide rail 6, improves the service life of the components, and also makes the sliding of the metal shielding cover 7 more flexible and smooth.

[0022] Working principle: In use, the operator opens the sealing cover 4, places the material to be dried into the inner liner 2, then closes the sealing cover 4, rotates the locking strip 5 to engage with the hook 3, ensuring a good seal in the inner liner 2, and starts the equipment. The microwave sources 16 at the upper and lower ends of the inner liner 2 begin to operate, generating microwave energy. The microwaves penetrate the material, causing the polar molecules such as water molecules inside the material to vibrate at high frequency, generating heat, thereby achieving the drying of the material. During this process, the refractory material layer 15 reduces heat transfer, maintains the temperature environment inside the inner liner 2, and ensures the drying effect. To prevent microwave leakage, the metal shield 7 initially covers the opening area of ​​the inner liner 2. When it is necessary to remove or place materials or perform other operations, the motor 10 is started. The drive sprocket 11 at the output end of the motor 10 drives the driven sprocket 12 to rotate via the chain 13, which in turn rotates the transmission rod 9. The winding disc 14 on the transmission rod 9 rotates accordingly, pulling the metal shield 7 through the wire rope 17 and connecting lug 20. The metal shield 7 slides on the T-shaped slide rail 6 via the sliding sleeve 18. The track wheel 19 and lubricant ensure smooth movement, enabling the metal shield 7 to be opened or closed, thus completing the material drying process while ensuring operational safety.

[0023] 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 microwave drying apparatus, comprising a drying chamber (1), characterized in that: The drying oven (1) is equipped with an inner liner (2), and a sealing cover (4) is hinged to the opening of the end face of the inner liner (2). Microwave sources (16) are installed at the upper and lower ends of the inner liner (2). Two uprights (8) are welded to the top of the drying oven (1), and transmission rods (9) are installed at the upper ends of the two uprights (8) through bearing seats. A winding disc (14) is fixed to the surface of the transmission rod (9), and a steel wire rope (17) is wound around the inside of the winding disc (14). A motor (10) is fixed to the right side wall of the drying oven (1) by bolts, and a drive sprocket (11) is fixed to the output end of the motor (10). The right end of the transmission rod (9) is fixed with a driven sprocket (12), and a chain (13) is engaged between the driven sprocket (12) and the driving sprocket (11). Two T-shaped slide rails (6) are welded to the front surface of the drying box (1), and a metal shield (7) is slidably installed between the two T-shaped slide rails (6). Several wave plates (21) are equidistantly installed on the inner side of the metal shield (7). Sliding sleeves (18) that are slidably connected to the T-shaped slide rails (6) are respectively provided on the left and right sides of the metal shield (7), and connecting ears (20) that are fastened to the wire rope (17) are welded to the surface of the sliding sleeves (18).

2. The microwave drying equipment according to claim 1, characterized in that: The cross-section of the metal shield (7) is an isosceles trapezoidal structure, and the size of the metal shield (7) is larger than the size of the inner liner (2). Furthermore, the side of the metal shield (7) is provided with a clearance notch (22) corresponding to the inner liner (2).

3. The microwave drying equipment according to claim 1, characterized in that: The sealing cover (4) is rotatably mounted with a clip (5), and a connecting column and bearing are provided between the clip (5) and the sealing cover (4). The inner liner (2) has a U-shaped hook (3) on its side corresponding to the clip (5).

4. The microwave drying equipment according to claim 1, characterized in that: The metal shield (7) is rotatably mounted on both the left and right sides with track wheels (19), and the track wheels (19) are rotatably connected to the T-shaped slide rail (6).

5. The microwave drying equipment according to claim 1, characterized in that: The interior of the drying oven (1) is constructed of a refractory material layer (15), and the refractory material layer (15) is wrapped around the outside of the inner liner (2).

6. The microwave drying equipment according to claim 1, characterized in that: The inner side of the sliding sleeve (18) is provided with a T-shaped connection port, and the T-shaped connection port is adapted to the contour of the T-shaped slide rail (6). The gap between the sliding sleeve (18) and the T-shaped slide rail (6) is filled with grease.

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