Microwave-assisted hot air drying equipment for processing melon seeds and process thereof

Abstract

This invention relates to the field of sunflower seed processing equipment technology, specifically a microwave-assisted hot air drying equipment and its process for sunflower seeds. The equipment includes a microwave heater, a hot air blower, and a container assembly. It solves the core problems of traditional sunflower seed drying equipment, such as uneven material turning leading to insufficient heating and the lack of an automatic locking / unlocking structure. By employing microwave and hot air assisted drying, combined with a motor-driven rotating container with perforated screens, the sunflower seeds are evenly turned throughout the process, ensuring simultaneous heating inside and outside the stacked layer. This fully leverages the assisted drying efficiency, resulting in thorough drying without scorching and consistent product quality. The discharge door is equipped with a spring-linked limit locking and hydraulic automatic unlocking structure, reliably locking to prevent leakage during drying and hydraulically driven automatic opening during unloading, eliminating the need for manual operation, reducing labor intensity, ensuring smooth and unobstructed discharge, and achieving high overall drying efficiency and stable operation. It is suitable for large-scale sunflower seed processing and significantly improves the crispness and flavor consistency of the finished product.

Description

Technical Field

[0001] This invention relates to the field of drying sunflower seed processing equipment, specifically to a microwave-assisted hot air drying equipment and process for sunflower seeds. Background Technology

[0002] As we all know, sunflower seeds are a popular snack with high national consumption. The drying process is the core link that determines the crispness, flavor retention, shelf life, and production efficiency of sunflower seeds. Microwave combined with hot air drying has become the mainstream technology for large-scale sunflower seed processing due to its advantages of fast drying speed, uniform heating, and low nutrient loss. It has strict requirements on the uniformity of material turning, the effect of combined drying, the automated discharge capability, and the stability of operation of the equipment.

[0003] Traditional drying equipment often uses static storage or simple turning structures, which prevents sunflower seeds from being fully and evenly turned during the drying process. This results in uneven heating within the stacked layer, easily leading to problems such as dry exterior but damp interior, localized scorching, and incomplete drying. The combined drying efficiency of microwave and hot air cannot be fully utilized, resulting in low drying efficiency and inconsistent product quality. Furthermore, the feeding and discharging of the equipment rely on manual operation, lacking an automated locking and unlocking structure. The material gate must be manually opened during unloading, which is cumbersome, labor-intensive, and the locking mechanism is unreliable, leading to leakage during the drying process. Unlocking also frequently results in jamming or failure.

[0004] Therefore, there is a need for a microwave-assisted hot air drying equipment and process for sunflower seeds. Summary of the Invention

[0005] Technical problems to be solved In order to overcome the problems of uneven heating inside the stacking layer and lack of automatic locking and unlocking discharge structure in existing microwave-coordinated hot air drying equipment and processes for sunflower seeds, this invention provides a microwave-coordinated hot air drying equipment and process for sunflower seeds.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a microwave-assisted hot air drying equipment for sunflower seeds, comprising: Microwave heater; A hot air blower, which is fixedly mounted on top of the microwave heater via a mounting bracket, the bottom of which is identical to the interior of the microwave heater; and A holding assembly is installed inside the microwave heater. The holding assembly includes a mounting plate, which is rotatably disposed at both ends of the microwave heater. A holding bucket is fixedly disposed between the mounting plates. An outlet door is opened at the top of the holding bucket, and several sieve holes are opened on the holding bucket.

[0007] Preferably, a support rod is fixedly provided on one side of the microwave heater, and a support ring is fixedly provided between the support rods. The support ring is rotatably configured with the mounting plate on one side.

[0008] Furthermore, an insertion door is provided on one side of the mounting plate, and the insertion door is fitted to the inner wall of the baffle of the microwave heater.

[0009] Furthermore, a fixing plate is fixedly installed on the side of the microwave heater, a motor is fixedly installed on the top of the fixing plate, and a rotating shaft is fixedly installed on the side of the mounting plate on the other side. The side of the rotating shaft is connected to the motor via a key.

[0010] In a further embodiment, a support block is fixedly installed on one side of the holding bucket, and a locking block adapted to the support block is fixedly installed on the top of the outlet door, with the locking block slidingly disposed with the support block.

[0011] Based on the aforementioned scheme, a first limiting hole is provided on the support block, the first limiting hole extends into the card block, and a limiting post is slidably provided in the first limiting hole.

[0012] Furthermore, based on the aforementioned scheme, a sliding hole is provided on the side of the support block, a sliding column is slidably disposed in the sliding hole, a connecting block is fixedly disposed on the side of both the sliding column and the limiting column, and a rotating rod is rotatably disposed between the connecting blocks.

[0013] Furthermore, based on the aforementioned scheme, a horizontal plate is fixedly provided on the side of the support block, and a rotating shaft is rotatably provided on the horizontal plate. The rotating shaft is rotatably located at the center of the rotating rod, and a spring is sleeved on the rotating shaft. The spring is fixedly provided with the horizontal plate and the rotating rod.

[0014] Furthermore, based on the aforementioned scheme, a bracket is fixedly installed on the side of the microwave heater, and a hydraulic rod is fixedly installed on the bracket, with the output shaft of the hydraulic rod in contact with the sliding column.

[0015] A microwave-assisted hot air drying process for sunflower seeds includes the following steps: S1: Place the sunflower seeds to be processed. First, open the microwave heater's door, then open the insertion door and place the sunflower seeds to be processed inside. S2: To dry sunflower seeds, first turn on the microwave heater, then turn on the hot air blower, and finally turn on the motor. The motor will rotate the container to dry the sunflower seeds evenly. S3: Take out the dried sunflower seeds, turn off the microwave heater, hot air blower and motor after heating is complete, make the outlet door face down, and then start the hydraulic rod. The hydraulic rod starts and drives the sliding rod to move. The movement of the sliding rod drives the limit post to move through the rotating shaft, releasing the restriction of the outlet door. Under the action of gravity, the outlet door opens and the sunflower seeds flow out into the storage tray below.

[0016] Beneficial effects This microwave-assisted hot air drying equipment and its process for drying sunflower seeds solves the core problems of traditional sunflower seed drying equipment, such as uneven material turning leading to insufficient heating, easy occurrence of dry exterior and damp interior, localized scorching, lack of automatic locking and unlocking structure, cumbersome manual unloading, and easy leakage or jamming of the material gate. It adopts microwave and hot air assisted drying, combined with a motor-driven rotating container with sieve holes, so that the sunflower seeds are evenly turned throughout the process, and the inside and outside of the stack are heated simultaneously, giving full play to the assisted drying efficiency. The drying is thorough, without scorching, and the finished product has consistent quality. The discharge door is equipped with a spring-linked limit locking and hydraulic automatic unlocking structure, which reliably locks to prevent leakage during drying and hydraulically drives the automatic opening of the door during unloading, eliminating the need for manual operation, reducing labor intensity, and ensuring smooth and unobstructed discharge. The overall drying efficiency is high, the operation is stable, and it is suitable for large-scale sunflower seed processing, significantly improving the crispness and flavor consistency of the finished product. Attached Figure Description

[0017] Figure 1 This is a side view of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the motor of the present invention; Figure 3 This is a schematic diagram of the support rod of the present invention; Figure 4 This is a schematic diagram of the structure of the container component of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the partial structure at point A in the middle; Figure 6 This is a schematic diagram of the support block of the present invention; Figure 7 This is a schematic diagram of the hydraulic rod of the present invention; Figure 8 This is a schematic diagram of the structure of the hot air blower of the present invention.

[0018] In the diagram: 1. Microwave heater; 2. Hot air blower; 3. Mounting bracket; 4. Container assembly; 5. Mounting plate; 6. Container bucket; 7. Outlet door; 8. Sieve hole; 9. Support rod; 10. Support ring; 11. Insertion door; 12. Fixing plate; 13. Motor; 14. Rotating shaft; 15. Support block; 16. Locking block; 17. First limiting hole; 18. Limiting post; 19. Sliding hole; 20. Sliding post; 21. Connecting block; 22. Rotating rod; 23. Horizontal plate; 24. Rotating shaft; 25. Spring; 26. Bracket; 27. Hydraulic rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] See Figures 1-8 A microwave-assisted hot air drying equipment for sunflower seeds includes a microwave heater 1. A hot air blower 2 is fixedly mounted on the top of the microwave heater 1 via a mounting bracket 3. The bottom of the hot air blower 2 is connected to the interior of the microwave heater 1. A holding assembly 4 is installed inside the microwave heater 1. The function of the microwave heater 1 is to use microwave radiation energy to heat the sunflower seeds internally, causing the internal moisture to quickly vaporize and separate, achieving drying from the inside out. It features fast heating speed and strong penetration, avoiding the problem of sunflower seeds being dry on the outside but damp on the inside. Simultaneously, microwave heating preserves the original flavor and nutrients of the sunflower seeds, improving the taste and quality of the dried seeds. It is the core heating component in the assisted drying system. The hot air blower 2... Its function is to generate a continuous and stable hot air flow, which is delivered downwards from the top of the microwave heater 1 to form a hot air circulation airflow. This externally heats and dries the sunflower seeds, achieving coordinated internal and external drying in conjunction with microwave heating. The hot air also quickly removes the vaporized moisture from the surface of the sunflower seeds, accelerating the drying process. At the same time, the flow of hot air can even out the internal temperature of the equipment, preventing local overheating that could cause the sunflower seeds to scorch, further improving the uniformity of drying. The function of the mounting bracket 3 is to securely fix the hot air blower 2 to the top of the microwave heater 1, ensuring the connection strength between the hot air blower 2 and the microwave heater 1, keeping the hot air delivery channel unobstructed, preventing hot air leakage, and providing stable support for the hot air blower 2 to ensure the long-term stability of the equipment.

[0021] The holding assembly 4 includes mounting plates 5, which are rotatably mounted at both ends of the microwave heater 1. A holding container 6 is fixedly mounted between the mounting plates 5. The top of the holding container 6 has an outlet door 7, and several sieve holes 8 are formed on the container 6. The function of the mounting plates 5 is to provide support for both ends of the holding container 6, stably mounting it inside the microwave heater 1. Simultaneously, it enables the holding container 6 to rotate freely inside the microwave heater 1, causing the sunflower seeds to rotate evenly and ensuring that the seeds are heated from all sides during the drying process. The rotation of the mounting plates 5 is smooth and without jamming, and will not wear or shift over long-term rotation. The function of the holding container 6 is to serve as a container for the sunflower seeds, holding them to be dried and providing a closed and stable drying space. The holding container 6 is made of high-temperature resistant and microwave-penetrating materials. Made of high-quality materials, it will not affect the drying effect of microwave and hot air, while possessing sufficient structural strength to hold a large number of sunflower seeds, adapting to the needs of large-scale processing. The function of the outlet door 7 is to serve as the discharge channel for sunflower seeds after drying. It remains closed during the drying process to prevent sunflower seeds from leaking out, and can be automatically opened after drying to allow the sunflower seeds to flow out smoothly under the action of gravity, realizing automated discharge without the need for manual unloading. The function of the sieve hole 8 is to allow microwaves and hot air to pass smoothly through the holding tank 6 and act directly on the sunflower seeds to ensure the drying effect. On the other hand, it can filter out the broken shells and impurities that fall off during the drying process, improving the cleanliness of the finished sunflower seeds. The size of the sieve hole 8 is precisely designed so that it will not allow whole sunflower seeds to leak out, but can smoothly discharge impurities, ensuring that drying and filtration are carried out simultaneously.

[0022] A support rod 9 is fixedly installed on one side of the microwave heater 1, and a support ring 10 is fixedly installed between the support rods 9. The support ring 10 is rotatably mounted with the mounting plate 5 on one side. The function of the support rod 9 is to provide fixed support for the support ring 10, and to securely install the support ring 10 on the side of the microwave heater 1, ensuring that the position of the support ring 10 is accurate and aligned with the rotation center of the mounting plate 5. The function of the support ring 10 is to provide rotational support for the mounting plate 5 on one side, to share the weight of the container 6 and the sunflower seeds, to reduce the frictional resistance when the mounting plate 5 rotates, and to make the rotation of the container 6 easier and more stable. This prevents the mounting plate 5 from getting stuck or deformed due to excessive weight, and improves the smoothness and durability of the equipment operation.

[0023] An insertion door 11 is provided on the mounting plate 5 on one side. The insertion door 11 fits against the inner wall of the baffle of the microwave heater 1. The function of the insertion door 11 is to serve as a feeding channel for the sunflower seeds to be dried. It is opened during feeding to smoothly put the sunflower seeds into the holding bucket 6. After feeding is completed, it is closed. It works with the baffle of the microwave heater 1 to form a closed drying space to prevent hot air and microwave leakage, ensuring drying efficiency and safety. The insertion door 11 has a good sealing effect and no gaps after closing, which can effectively prevent heat loss and improve energy utilization.

[0024] A fixing plate 12 is fixedly installed on the side of the microwave heater 1, and a motor 13 is fixedly installed on the top of the fixing plate 12. A rotating shaft 14 is fixedly installed on the side of the mounting plate 5 on the other side. The side of the rotating shaft 14 is connected to the motor 13 by a key. The function of the fixing plate 12 is to provide a stable mounting base for the motor 13, firmly fixing the motor 13 to the side of the microwave heater 1, ensuring that the motor 13 will not shake or shift during operation, and providing stable power for the rotation of the container 6. The function of the motor 13 is to provide a power source for the rotation of the container 6. By rotating in both directions, it drives the rotating shaft 14 to rotate synchronously, thereby driving the mounting plate 5 and the container 6 to rotate. The speed of the motor 13 is adjustable, and the rotation speed can be adjusted according to the drying requirements of the sunflower seeds to ensure that the sunflower seeds are turned evenly and adapt to the drying requirements of different varieties and different humidity levels of sunflower seeds. The function of the rotating shaft 14 is to transmit the rotational power of the motor 13, smoothly delivering the power to the mounting plate 5, realizing the power connection between the motor 13 and the container 6. The key connection method has high transmission efficiency and no power transmission loss, ensuring that the rotation of the container 6 is stable and synchronous.

[0025] A support block 15 is fixedly installed on one side of the holding tank 6, and a locking block 16 adapted to the support block 15 is fixedly installed on the top of the outlet door 7. The locking block 16 and the support block 15 are slidably arranged. The function of the support block 15 is to provide an installation base for the locking structure of the outlet door 7, and at the same time, cooperate with the locking block 16 to achieve the initial positioning of the outlet door 7, ensuring that the outlet door 7 is accurately positioned when closed, without any offset or gaps. The function of the locking block 16 is to slide and cooperate with the support block 15 to connect the outlet door 7 and the holding tank 6 into one piece. The sliding connection makes the opening and closing of the outlet door 7 smoother and prevents jamming. At the same time, it provides a cooperating structure for subsequent limit locking to ensure the firmness of the outlet door 7 after it is closed.

[0026] A limiting hole is provided on the support block 15, which extends into the inside of the locking block 16. A limiting post 18 is slidably installed in the limiting hole. The function of the limiting hole and the limiting post 18 is to form a locking structure for the outlet door 7. When the limiting post 18 is inserted into the limiting hole, the locking block 16 can be firmly fixed on the support block 15, thereby locking the outlet door 7 in the closed state. This prevents the outlet door 7 from being accidentally opened due to the rotation of the container 6 or the impact of the sunflower seeds during the drying process, thus avoiding material leakage. The matching between the limiting post 18 and the limiting hole is precise, and there is no looseness after locking, ensuring the stability of the drying process.

[0027] A sliding hole 19 is provided on the side of the support block 15. A sliding column 20 is slidably arranged in the sliding hole 19. A connecting block 21 is fixedly arranged on the side of both the sliding column 20 and the limiting column 18. A rotating rod 22 is rotatably arranged between the connecting blocks 21. The function of the sliding hole 19 is to provide a sliding track for the sliding column 20, ensuring that the sliding column 20 can only slide in a straight line, and to provide power transmission for unlocking the limiting column 18. The function of the sliding column 20 is to act as the power input end of the unlocking structure. By sliding itself, it drives the connecting block 21 and the rotating rod 22 to move, thereby controlling the extension and retraction of the limiting column 18, realizing the locking and unlocking of the exit door 7. The function of the connecting block 21 is to stably connect the sliding column 20, the limiting column 18 and the rotating rod 22, ensuring that the power transmission is lossless, and allowing the sliding action of the sliding column 20 to be accurately converted into the extension and retraction action of the limiting column 18. The function of the rotating rod 22 is to act as an intermediate component for power transmission. By rotating, it converts the lateral power of the sliding column 20 into the longitudinal power of the limiting column 18. The transmission structure is simple and efficient, and the operation is stable and without jamming.

[0028] A horizontal plate 23 is fixedly installed on the side of the support block 15. A rotating shaft 24 is rotatably installed on the horizontal plate 23. The rotating shaft 24 is rotatably positioned at the center of the rotating rod 22. A spring 25 is sleeved on the rotating shaft 24. The spring 25 is fixedly installed on the horizontal plate 23 and the rotating rod 22. The function of the horizontal plate 23 is to provide fixed support for the rotating shaft 24 and the spring 25, ensuring the installation stability of the unlocking structure. The function of the rotating shaft 24 is to provide a fulcrum for the rotating rod 22, allowing the rotating rod 22 to rotate flexibly around the fulcrum, ensuring smooth power transmission. The function of the spring 25 is to provide elastic restoring force for the rotating rod 22. During the drying process, the spring 25 drives the rotating rod 22 to return to its original position through elastic tension, keeping the limiting post 18 always in the locked state inserted into the limiting hole. When unlocking is required, the sliding post 20 slides and compresses the spring 25. After unlocking, the sliding post 20 is released, and the spring 25 quickly drives the structure to return to its original position, restoring the locked state. The elastic locking design is reliable and stable, and no manual maintenance of the locking state is required.

[0029] A bracket 26 is fixedly installed on the side of the microwave heater 1. A hydraulic rod 27 is fixedly installed on the bracket 26. The output shaft of the hydraulic rod 27 is in contact with the sliding column 20. The function of the bracket 26 is to provide a stable installation base for the hydraulic rod 27, fix the hydraulic rod 27 at the position corresponding to the sliding column 20, and ensure that the output shaft of the hydraulic rod 27 can accurately act on the sliding column 20. The function of the hydraulic rod 27 is to provide power for automatic unlocking. By extending and retracting the output shaft, the sliding column 20 is pushed to slide, realizing the automatic unlocking of the exit door 7. No manual operation is required, reducing labor intensity. The hydraulic rod 27 operates stably, with uniform thrust, and can accurately control the unlocking action, which is suitable for the use of automated processing production lines.

[0030] First, refer to Figure 1In this embodiment, the equipment adopts a dual drying mode of microwave and hot air. Microwaves are responsible for heating and dehydrating the inside of the sunflower seeds, while hot air is responsible for heating the outside and removing moisture. The combination of the two drying methods greatly improves the drying efficiency. Compared with a single drying method, the drying speed is increased several times, and the sunflower seeds are heated evenly inside and out. This completely solves the problems of dry outside and damp inside, local scorching, and incomplete drying in traditional equipment. The finished sunflower seeds are dried to a consistent degree, and their crispness and flavor quality are greatly improved.

[0031] Then, refer to Figure 2 In this embodiment, the holding bucket 6 adopts a rotating design driven by motor 13, which rotates continuously during the drying process, causing the sunflower seeds inside to turn over continuously, so that each sunflower seed can be evenly exposed to microwaves and hot air, and the sunflower seeds inside the stacked layer can also be fully heated without any dead corners in drying. At the same time, the sieve holes 8 on the holding bucket 6 can simultaneously filter out broken shells and impurities. Drying and impurity removal are completed simultaneously, simplifying the processing flow and improving the quality of the finished product.

[0032] Finally, see Figure 5 In this embodiment, the discharge door 7 adopts a structure design with spring 25 elastic locking and hydraulic automatic unlocking. During the drying process, spring 25 always remains locked, and the discharge door 7 will not open accidentally and leak material. When unloading, hydraulic rod 27 automatically pushes the unlocking structure, and the discharge door 7 opens smoothly under the action of gravity, realizing automated material discharge. No manual operation is required throughout the process, reducing labor intensity. The unlocking structure operates stably without jamming or failure, and is suitable for large-scale continuous processing of sunflower seeds.

[0033] Working principle: The microwave-assisted hot air drying equipment and its process for sunflower seeds are as follows: First, place the equipment in the designated position on the sunflower seed processing production line, connect the power supply and hot air supply system to complete the equipment deployment preparation, and then carry out the sunflower seed feeding operation. The specific operation is as follows: open the baffle door of the microwave heater 1, and then open the inlet door 11 on the mounting plate 5. Put the sunflower seeds to be dried into the holding tank 6 through the inlet door 11. After the sunflower seeds are full, close the inlet door 11 and the baffle door of the microwave heater 1 to form a closed drying space and complete the feeding process.

[0034] Next, the collaborative drying process is initiated. The specific operation is as follows: Microwave heater 1 and hot air blower 2 are turned on in sequence. Microwave heater 1 generates microwave radiation that penetrates the container 6 to heat the inside of the sunflower seeds, causing the moisture inside the seeds to vaporize rapidly. Hot air generated by hot air blower 2 enters the microwave heater 1 through the top channel, forming circulating hot air to heat the outside of the sunflower seeds and quickly remove the vaporized moisture. At the same time, motor 13 is started. The operation of motor 13 drives the rotating shaft 14 to rotate. The rotating shaft 14 drives the mounting plate 5 and the container 6 to rotate continuously inside the microwave heater 1. During the rotation of the container 6, the sunflower seeds inside are constantly turned over, allowing the sunflower seeds to come into full and uniform contact with microwaves and hot air. The sieve holes 8 on the container 6 simultaneously filter out the broken shells and impurities that fall off the sunflower seeds, ensuring that the sunflower seeds are dried evenly, without scorching or impurities. Throughout the drying process, spring 25 drives rotating rod 22 to return to its original position through elastic tension. Limiting post 18 is always inserted into the limiting hole, firmly locking the outlet door 7 to prevent accidental leakage.

[0035] After drying, an automated discharge operation is performed. The specific operation is as follows: microwave heater 1, hot air blower 2, and motor 13 are turned off in sequence, and motor 13 is stopped from rotating. The holding tank 6 is rotated to the position where the outlet door 7 faces downward. Then, hydraulic rod 27 is activated, and the output shaft of hydraulic rod 27 extends, pushing sliding column 20 to slide along sliding hole 19. Sliding column 20 drives connecting block 21 to move, which in turn drives rotating rod 22 to rotate around rotating shaft 24. Rotating rotating rod 22 drives connecting block 21 and limiting column 18 on the other side to move, so that limiting column 18 exits from inside limiting hole, releasing the limiting lock on locking block 16 and outlet door 7. Outlet door 7 opens automatically under the action of gravity, and the dried sunflower seeds inside holding tank 6 flow smoothly out of outlet door 7 and fall into the receiving tray below, completing the automated discharge.

[0036] After the material is discharged, the hydraulic rod 27 is closed, the output shaft of the hydraulic rod 27 is retracted, the spring 25 releases its elastic potential energy, and drives the rotating rod 22 to reset around the rotating shaft 24. The rotating rod 22 drives the sliding column 20 and the limiting column 18 to reset. The limiting column 18 is reinserted into the limiting hole, and the outlet door 7 is restored to the locked state. Then, the feeding, drying and discharging operations can be performed again to realize the continuous processing of sunflower seeds.

[0037] A microwave-assisted hot air drying process for sunflower seeds includes the following steps: First, place the sunflower seeds to be processed into the container. First, adjust the equipment to standby mode, open the external door of the microwave heater 1, and then open the inlet door 11 on the mounting plate 5 on one side of the container 6. Evenly put the sorted sunflower seeds to be dried into the container 6, controlling the amount of sunflower seeds added to the rated capacity of the container 6 to avoid excessive addition and uneven turning. After the addition is completed, close the inlet door 11 and the microwave heater 1 door in sequence to ensure that the drying space is sealed.

[0038] The second step involves coordinating the drying of sunflower seeds. First, the microwave heater 1 is activated, and the microwave power is adjusted to parameters suitable for drying sunflower seeds, allowing the microwaves to internally heat and dehydrate the seeds. Then, the hot air blower 2 is activated, and the hot air temperature and speed are adjusted to circulate the hot air inside the equipment, externally heating the seeds and removing moisture. Finally, the motor 13 is activated, and its speed is adjusted to drive the holding container 6 to rotate at a uniform speed, allowing the seeds to continuously and evenly tumble within the container 6, maximizing the drying efficiency of the microwaves and hot air. Within the set drying time, the moisture inside and outside the seeds is evenly released, achieving the target degree of dryness. The equipment's operating status is monitored in real time during the drying process to ensure there are no abnormalities.

[0039] The third step involves automatically removing the dried sunflower seeds. After the drying time is over, the microwave heater 1, hot air blower 2, and motor 13 are turned off in sequence to stop heating and rotation. By controlling the motor 13 to operate intermittently, the holding bucket 6 is adjusted to the position where the outlet door 7 is vertically downward. Then, the hydraulic rod 27 is activated, which drives the unlocking mechanism to release the locking restriction of the outlet door 7. The outlet door 7 opens automatically under gravity, and the dried sunflower seeds flow smoothly into the receiving equipment below. After the discharge is completed, the hydraulic rod 27 is reset, and the outlet door 7 is automatically locked, ready for the drying of the next batch of sunflower seeds.

[0040] In the large-scale processing of sunflower seeds, this equipment and process can achieve continuous operation. The combined microwave and hot air drying mode significantly shortens the drying time and improves processing efficiency. The rotating and tumbling design ensures uniform drying quality of the sunflower seeds. The automated locking and discharge structure reduces manual intervention, lowers labor intensity and labor costs. At the same time, the equipment operates stably with a low failure rate. The 8-hole screen design for simultaneous impurity removal simplifies the processing steps, improves the cleanliness and taste of the finished sunflower seeds, and completely solves the problems of uneven heating, incomplete drying, cumbersome manual operation, leakage and jamming in traditional sunflower seed drying equipment. It is perfectly adapted to the large-scale, standardized and automated processing needs of the snack food industry, effectively improving the production efficiency and finished product quality of sunflower seed processing, extending the shelf life of sunflower seeds, and preserving the original flavor and nutritional components of sunflower seeds.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microwave assisted hot air drying processing equipment for processing melon seeds and a process thereof, characterized in that, include: Microwave heater (1); A hot air blower (2) is fixedly mounted on top of the microwave heater (1) by a mounting bracket (3), and the bottom of the hot air blower (2) is the same as the interior of the microwave heater (1); and The container assembly (4) is installed inside the microwave heater (1). The container assembly (4) includes a mounting plate (5). The mounting plate (5) is rotatably disposed at both ends of the microwave heater (1). A container (6) is fixedly disposed between the mounting plates (5). An outlet door (7) is opened on the top of the container (6). Several sieve holes (8) are opened on the container (6).

2. A microwave synergic hot air drying processing equipment for melon seeds according to claim 1, characterized in that, A support rod (9) is fixedly installed on one side of the microwave heater (1), and a support ring (10) is fixedly installed between the support rods (9). The support ring (10) is rotatably installed with the mounting plate (5) on one side.

3. A microwave synergic hot air drying process of melon seeds and the equipment thereof according to claim 2, characterized in that, An insertion door (11) is provided on one side of the mounting plate (5), and the insertion door (11) is in contact with the inner wall of the baffle of the microwave heater (1).

4. The microwave-assisted hot air drying equipment for sunflower seeds according to claim 3, characterized in that, A fixing plate (12) is fixedly installed on the side of the microwave heater (1), and a motor (13) is fixedly installed on the top of the fixing plate (12). A rotating shaft (14) is fixedly installed on the side of the mounting plate (5) on the other side. The side of the rotating shaft (14) is connected to the motor (13) by a key.

5. The microwave-assisted hot air drying equipment for sunflower seeds according to claim 4, characterized in that, A support block (15) is fixedly provided on one side of the holding bucket (6), and a locking block (16) adapted to the support block (15) is fixedly provided on the top of the outlet door (7). The locking block (16) and the support block (15) are slidably disposed.

6. The microwave-assisted hot air drying equipment for sunflower seeds according to claim 5, characterized in that, The support block (15) is provided with a first limiting hole (17), the first limiting hole (17) extends into the card block (16), and a limiting post (18) is slidably provided in the first limiting hole (17).

7. The microwave-assisted hot air drying equipment for sunflower seeds according to claim 6, characterized in that, The support block (15) has a sliding hole (19) on its side. A sliding column (20) is slidably arranged in the sliding hole (19). A connecting block (21) is fixedly arranged on the side of both the sliding column (20) and the limiting column (18). A rotating rod (22) is rotatably arranged between the connecting blocks (21).

8. The microwave-assisted hot air drying equipment for sunflower seeds according to claim 7, characterized in that, A horizontal plate (23) is fixedly provided on the side of the support block (15). A rotating shaft (24) is rotatably provided on the horizontal plate (23). The rotating shaft (24) is rotatably provided at the center of the rotating rod (22). A spring (25) is sleeved on the rotating shaft (24). The spring (25) is fixedly provided with the horizontal plate (23) and the rotating rod (22).

9. The microwave-assisted hot air drying equipment for sunflower seeds according to claim 8, characterized in that, A bracket (26) is fixedly installed on the side of the microwave heater (1), and a hydraulic rod (27) is fixedly installed on the bracket (26). The output shaft of the hydraulic rod (27) is in contact with the sliding column (20).

10. A microwave-assisted hot air drying process for sunflower seeds according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Put in the sunflower seeds to be processed. First, open the door of the microwave heater (1), then open the inlet door (11) and put the sunflower seeds to be processed into it. S2: To dry sunflower seeds, first turn on the microwave heater (1), then turn on the hot air blower (2), and finally turn on the motor (13). The motor (13) rotates and drives the container (6) to rotate, drying the sunflower seeds evenly. S3: Take out the dried sunflower seeds, turn off the microwave heater (1), hot air blower (2) and motor (13) after heating, so that the outlet door (7) is facing down, and then start the hydraulic rod (27). The hydraulic rod (27) starts and drives the sliding rod to move. The sliding rod moves through the rotating shaft (24) and drives the limit post (18) to move, releasing the restriction of the outlet door (7). Under the action of gravity, the outlet door (7) opens and the sunflower seeds flow out into the lower tray.

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