Multi-mode efficient red date drying equipment

Abstract

The invention relates to the technical field of red date drying, and particularly discloses multi-mode efficient red date drying equipment which comprises a conveying belt, the conveying belt sequentially passes through a first drying box and a second drying box, a feeding port is fixedly formed in a side plate of the first drying box, and the bottom of the feeding port is connected with a baffle. A near infrared spectrum sensor is arranged between the feeding port and the first drying box, a liftable infrared radiant panel is connected to a top plate in the first drying box through springs, a radio frequency electrode net is laid on a bottom plate of the first drying box, an air blower is fixedly connected to the top of the second drying box, and a heater is installed on one side of the air blower. A plurality of air outlet holes are evenly distributed in a top plate in the second drying box, discharging ports are formed in side plates, and temperature and humidity sensors are arranged on the side plates in the two drying boxes. According to the red date drying device, the three modes of infrared drying, radio frequency drying and infrared-radio frequency collaborative drying can be flexibly switched, the drying efficiency and the red date quality are improved, and the industrial production requirement is met.

Description

Technical Field

[0001] The present invention relates to the technical field of red date drying, and in particular to multi-mode and efficient red date drying equipment. Background Art

[0002] Due to their high nutritional value and medicinal properties, the market for red dates is gradually expanding. Drying red dates is a key step in ensuring their quality and storage life. With the large-scale development of the red date industry, the demand for efficient, high-quality drying equipment is becoming increasingly urgent. Currently, most existing red date drying equipment uses a single drying mode. For example, hot air drying suffers from low drying efficiency, high energy consumption, and uneven drying. Infrared drying, while faster, is not effective in evaporating moisture from the red dates. Radio frequency drying equipment is expensive and difficult to achieve ideal drying results when used alone. These limitations make it difficult to meet the high standards required for industrial production.

[0003] Chinese patent CN114190571A discloses a red date drying device. The device comprises several rotating gears mounted on the bottom side of a drying box. The rotating gears mesh with each other through rotating gears. When the rotating gears rotate in coordination with each other, they drive the red dates on a drying tray to rotate and revolve. At this time, a drying motor delivers hot air into the drying tray through air jets on the drying shaft, ensuring rapid drying of the red dates on the drying tray. While this device has a novel structural design and high drying efficiency, the hot air has a complex flow path and gradually loses heat along the air jets, resulting in uneven heating of the red dates on the drying tray and high energy consumption. Chinese patent CN210520062U discloses a red date drying device. The red dates are placed on a drying rack. A far-infrared heating plate generates heat. The motor drives the rotating shaft, and the drying rack on the rotating shaft rotates at a constant speed, rapidly drying the red dates. However, the infrared radiation has a limited penetration depth. For large, high-water-content red dates, the internal moisture is difficult to fully evaporate. Furthermore, this mode of operation can easily lead to a large temperature difference between the surface and interior of the red dates, causing the skin to dry out and crack, reducing product quality.

[0004] In summary, there is an urgent need for a multi-mode and efficient red date drying equipment to meet the needs of large-scale, high-quality industrial production. Summary of the Invention

[0005] To solve the above problems, the present invention provides a multi-mode and efficient red date drying equipment, including a conveyor belt, which passes through a first drying box and a second drying box in sequence. A feed port is fixedly provided on the side panel of the first drying box, and the bottom of the feed port is connected to a baffle, which can rotate freely around a bearing to be opened or closed. A near-infrared spectrum sensor is provided between the feed port and the first drying box for quickly detecting the type and initial moisture content of the red dates at the feed port. A liftable infrared radiation plate is connected to the top plate inside the first drying box by a spring, and its lifting height range is 10-50 cm. A radio frequency electrode net is laid on the bottom plate inside the first drying box. By adjusting the height of the infrared radiation plate and the power of the radio frequency electrode net, three modes of infrared drying, radio frequency drying and infrared-radio frequency coordinated drying can be achieved. A blower is fixedly connected to the top of the second drying box, and a heater is installed on one side of the blower. A number of evenly distributed air outlets are provided on the top plate inside the second drying box, which are in the shape of a frustum structure. A discharge port is provided on the side panel of the second drying box, and temperature and humidity sensors are provided on the internal side panels of the first drying box and the second drying box.

[0006] Furthermore, pulleys are connected to both ends of the conveyor belt, and the pulleys drive the conveyor belt through the rotation of the motor, thereby achieving uninterrupted material transportation and meeting the needs of industrial production.

[0007] Furthermore, the outside of the second drying box is fixedly connected to a central controller, which is used to control the height of the infrared radiation plate, the power of the radio frequency electrode network, the rotation of the baffle, etc., to achieve intelligent control of all electrical equipment.

[0008] The beneficial effects of the present invention are as follows: 1. The present invention proposes a multi-mode switching design. By adjusting the height of the infrared radiation plate and the power of the radio frequency electrode network in the first drying box, flexible switching between the three modes of infrared drying, radio frequency drying and infrared-radio frequency collaborative drying can be achieved. Infrared quickly evaporates surface moisture, and radio frequency penetrates and heats internal moisture, thereby achieving dehydration pretreatment of red dates. The dates are then sent to the second drying box via a conveyor belt for deep drying, accelerating the migration of internal moisture. Multiple drying modes can be flexibly switched or operated in collaboration, significantly improving drying efficiency and red date quality. The lifting control of the infrared radiation plate combined with the dynamic adjustment of the radio frequency electrode network power can reduce the heating uniformity deviation for different types and sizes of red dates, making the red dates heated more evenly.

[0009] 2. The present invention realizes intelligent integration of the whole drying process, and the modular cavity design supports the parallel operation of various components to meet the needs of industrial continuous production. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main structure of the multi-mode and efficient red date drying equipment of the present invention; Figure 2This is a bottom view of the air outlet of the multi-mode and efficient red date drying equipment of the present invention; Figure 3 This is a circuit control schematic diagram of the multi-mode and efficient red date drying equipment of the present invention.

[0011] Figure numerals: 1. Conveyor belt, 2. Feed port, 3. Baffle, 4. Near-infrared spectrum sensor, 5. Spring, 6. Infrared radiation plate, 7. Radio frequency electrode net, 8. Blower, 9. Heater, 10. Air outlet, 11. Discharge port, 12. Temperature and humidity sensor, 13. Central controller. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0013] like Figure 1 As shown, the present invention provides a multi-mode and efficient red date drying equipment, including a conveyor belt 1, which passes through a first drying box and a second drying box in sequence. A feed port 2 is fixedly provided on the side panel of the first drying box, and a baffle 3 is connected to the bottom of the feed port 2. A near-infrared spectrum sensor 4 is provided between the feed port 2 and the first drying box for quickly detecting the type and initial moisture content of the red dates at the feed port. A liftable infrared radiation plate 6 is connected to the top plate of the first drying box through a spring 5, and the lifting height range is 10-50 cm. The bottom plate inside the first drying box is fixedly provided with a feed port 2, and a baffle 3 is connected to the bottom plate of the first drying box. A radio frequency electrode mesh 7 is laid on the top, and the radio frequency electrode mesh 7 has low frequency and high frequency power options. By adjusting the height of the infrared radiation plate 6 and the power of the radio frequency electrode mesh 7, three modes of infrared drying, radio frequency drying and infrared-radio frequency coordinated drying can be achieved. The top of the second drying box is fixedly connected to a blower 8, and a heater 9 is installed on one side of the blower 8. A number of evenly distributed air outlets 10 are provided on the top plate inside the second drying box, and a discharge port 11 is provided on the side panel of the second drying box. Temperature and humidity sensors 12 are provided on the internal side panels of the first drying box and the second drying box.

[0014] On the basis of the above scheme, the present invention can be further improved. The baffle 3 can rotate freely around the bearing to be opened or closed. When the conveyor belt 1 rotates, the baffle 3 is in the open state. When the conveyor belt 1 stops rotating, the baffle 3 is in the closed state to prevent the red dates from falling.

[0015] On the basis of the above scheme, the present invention can be further improved, such as Figure 2 The air outlet 10 is in the shape of a frustum structure, which is narrow at the top and wide at the bottom, so that the heat from the air outlet 10 is more uniform.

[0016] On the basis of the above scheme, the present invention can be further improved. Pulleys are connected to both ends of the conveyor belt 1. The pulleys drive the conveyor belt 1 through the rotation of the motor to realize uninterrupted material transportation and meet the needs of industrial production.

[0017] On the basis of the above scheme, the present invention can be further improved by fixing a central controller 13 on the outside of the second drying box. The central controller 13 is used to control the height of the infrared radiation plate 6, the power of the radio frequency electrode network 7, the rotation of the baffle 3, etc., so as to realize intelligent control of all electrical equipment.

[0018] like Figure 3 As shown, the circuit control principle of the present invention is as follows: when the equipment is started, the drying mode in the first drying box is selected according to the initial moisture content and variety of the red dates detected by the near-infrared spectrum sensor 4. When the initial moisture content is high and there is a need for rapid surface dehydration, such as gray dates, the central controller 13 controls the infrared radiation plate 6 to descend and starts the infrared drying mode; when the initial moisture content is high and it is necessary to evenly penetrate the internal moisture migration, such as Jun dates, the power of the radio frequency electrode network 7 is adjusted by the central controller 13 to start the radio frequency drying mode; when it is necessary to balance rapid surface dehydration and internal penetration, such as candied dates, the central controller 13 controls the infrared radiation plate 6 to descend and adjusts the power of the radio frequency electrode network 7 to start the infrared-radio frequency coordinated drying mode. After the drying in the first drying box is completed, the conveyor belt 1 transports the red dates to the second drying box. At this time, the blower 8 is started, and the wind source is driven by the blower 8 to drive the wind wheel through the heater 9, and the hot air is evenly sent out through a number of air outlets 10 to deeply dry the red dates. After the drying in the second drying box is completed, the red dates are collected through the discharge port 11.

[0019] All hollowed components of the present invention are connected to the central controller 13 using existing electrical connection means. The central controller 13 is equipped with an automatic control system, data acquisition and storage components, and a touch screen display.

[0020] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-mode and efficient red date drying device, comprising a conveyor belt (1), characterized in that: The conveyor belt (1) passes through the first drying box and the second drying box in sequence. A feed port (2) is fixedly provided on the side panel of the first drying box. The bottom of the feed port (2) is connected to a baffle (3). A near-infrared spectrum sensor (4) is provided between the feed port (2) and the first drying box. A liftable infrared radiation plate (6) is connected to the top panel of the first drying box via a spring (5). A radio frequency electrode net (7) is laid on the bottom panel of the first drying box. A blower (8) is fixedly connected to the top of the second drying box. A heater (9) is installed on one side of the blower (8). A plurality of evenly distributed air outlets (10) are provided on the top panel of the second drying box. A discharge port (11) is provided on the side panel of the second drying box. Temperature and humidity sensors (12) are provided on the inner side panels of the first drying box and the second drying box.

2. The multi-mode and efficient red date drying equipment according to claim 1 is characterized in that: The baffle (3) can rotate freely around the bearing.

3. The multi-mode and efficient red date drying equipment according to claim 1 is characterized in that: The height adjustment range of the infrared radiation plate (6) is 10-50 cm.

4. The multi-mode and efficient red date drying equipment according to claim 1 is characterized in that: Both ends of the conveyor belt (1) are connected to pulleys, and the pulleys are rotated by a motor to drive the conveyor belt (1).

5. The multi-mode and efficient red date drying equipment according to claim 1 is characterized in that: The air outlet (10) is in the shape of a truncated cone structure.

6. The multi-mode and efficient red date drying equipment according to claim 1 is characterized in that: The exterior of the second drying box is fixedly connected to a central controller (13).

Images