Hot air drying net-belt drying and conveying device for plant raw materials

Abstract

This utility model discloses a hot air drying mesh belt conveyor for plant raw materials, including a drying box with inlet and outlet ports at both ends. A conveying mechanism is installed on the drying box, and a push-pull material mechanism is installed inside. A hot air conveying mechanism is installed at the top of the drying box. The conveying mechanism includes fixed plates, and fixed plates are fixed to the front and rear sides at both ends of the drying box. Rotating rollers are rotatably installed between the fixed plates away from the drying box via sealed bearings, and a stainless steel mesh belt is sleeved between the rotating rollers. This hot air drying mesh belt conveyor for plant raw materials controls the material thickness to 1 cm by using a flat plate. Combined with the alternating back-and-forth turning of the first and second material-pushing plates, the exchange frequency between the upper and lower layers of material is increased. Combined with the surface hot air coverage of the air collecting plate, the material can be fully dried, completely solving the problem of insufficient drying of the bottom layer material.

Description

Technical Field

[0001] This utility model relates to the technical field of agricultural product processing equipment, specifically to a hot air drying mesh belt conveyor device for plant raw materials. Background Technology

[0002] Plant-based raw materials (such as sliced ​​Chinese medicinal herbs, fresh tea leaves, and fruit and vegetable chunks) need to be dried to remove moisture before processing in order to prevent mold growth and extend shelf life.

[0003] However, in existing hot air drying conveyor belt systems for plant materials, the plant materials are mostly statically stacked on the conveyor belt. When hot air blows from the top, only the surface layer of material receives sufficient contact with the hot air, while the bottom layer dries slowly due to being shielded. This results in significant differences in moisture content within the same batch of material, affecting the quality of subsequent processing. To address these issues, an innovative design based on the existing drying conveyor system is urgently needed. Utility Model Content

[0004] The purpose of this invention is to provide a hot air drying mesh belt conveyor for plant raw materials to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot air drying mesh belt conveyor for plant raw materials, including a drying box, both ends of which are provided with inlet and outlet ports, and a conveying mechanism is provided on the drying box, and a push-pull material mechanism is provided inside the drying box, and a hot air conveying mechanism is provided at the top of the drying box.

[0006] Preferably, the conveying mechanism includes a fixed plate, and fixed plates are fixed to the front and rear sides of both ends of the drying box. Rotating rollers are rotatably installed between the fixed plates away from the drying box via sealed bearings, and a stainless steel mesh belt is sleeved between the rotating rollers. The end of one of the rotating rollers passes through the interior of the fixed plate and is fixedly connected to the output end of a servo motor. Meanwhile, the outer wall of the servo motor is fixed to one side of the fixed plate via a mounting plate. The top of the stainless steel mesh belt passes through the interior of the drying box and the inlet / outlet, and the bottom of the stainless steel mesh belt is located below the drying box.

[0007] Preferably, the push-pull material mechanism includes an electric push rod. The electric push rod is fixed to the outside of the drying box, and the output end of the electric push rod passes through the side wall of the drying box and is fixedly connected to one side of the movable plate. The side of the movable plate is in contact with the inner wall of the drying box, and the output end of the electric push rod is slidably connected to the side wall of the drying box. A first material-pulling plate is fixed to the bottom of the movable plate near the inner wall of the drying box, and a second material-pulling plate is fixed to the bottom of the movable plate away from the inner wall of the drying box. The bottoms of both the first and second material-pulling plates are in contact with the top of the stainless steel mesh belt.

[0008] Preferably, the first and second material-pushing plates are evenly distributed at the bottom of the movable plate, and the first and second material-pushing plates are staggered.

[0009] Preferably, the hot air conveying mechanism includes an air collecting plate, which is fixed to the top of the drying box. An air collecting cavity is opened inside the air collecting plate, and air outlet holes are evenly opened at the bottom of the air collecting cavity. An air outlet pipe is fixed at the center of the top of the air collecting cavity, and the end of the air outlet pipe passes through the air collecting plate and the top of the drying box and is fixedly connected to the output end of the hot air blower. The hot air blower is fixed to the top of the drying box, and an air inlet pipe is provided at the input end of the hot air blower.

[0010] Preferably, an exhaust pipe is provided at the bottom of one side of the drying oven, and both the exhaust pipe and the air inlet pipe are threaded with covers at their ends, with a filter screen provided in the middle of the cover.

[0011] Preferably, a controller is provided on one side of the fixed plate, and a temperature sensor is provided on the inner wall of the drying oven. The controller is electrically connected to the servo motor, electric push rod, hot air blower, and temperature sensor.

[0012] Preferably, a flat plate is fixed inside the drying oven, and the bottom of the flat plate is 1 cm away from the top of the stainless steel mesh belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the plant raw material hot air drying mesh belt drying and conveying device controls the material thickness to 1 cm by laying flat plate, and with the alternating back and forth turning of the first and second material feeding plates, the exchange frequency between the upper and lower layers of the material can be increased. Combined with the surface hot air coverage of the air collecting plate, the material can be fully dried, and the problem of insufficient drying of the bottom layer material can be completely solved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the electric push rod installation structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exhaust pipe installation structure of this utility model;

[0016] Figure 3 This is a cross-sectional view of the internal structure of the drying oven of this utility model;

[0017] Figure 4 This is a cross-sectional view of the air collection plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the installation structure of the flat slab of this utility model;

[0019] Figure 6 This is a schematic diagram of the distribution structure of the first and second material feeding plates of this utility model;

[0020] Figure 7 This is a cross-sectional view of the installation structure of the electric push rod of this utility model.

[0021] In the diagram: 1. Drying oven; 2. Inlet / outlet; 3. Fixed plate; 4. Rotating roller; 5. Stainless steel mesh belt; 6. Servo motor; 7. Electric push rod; 8. Movable plate; 9. First feeding plate; 10. Second feeding plate; 11. Air collecting plate; 12. Air collecting chamber; 13. Air outlet; 14. Air outlet pipe; 15. Hot air blower; 16. Air inlet pipe; 17. Exhaust pipe; 18. Cover; 19. Controller; 20. Flat plate; 21. Temperature sensor. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-7 The present invention provides a technical solution: a hot air drying mesh belt drying and conveying device for plant raw materials, including a drying box 1, with inlet and outlet ports 2 at both ends of the drying box 1, a conveying mechanism on the drying box 1, a push-pull material mechanism inside the drying box 1, and a hot air conveying mechanism at the top inside the drying box 1.

[0024] The conveying mechanism includes a fixed plate 3. Fixed plates 3 are fixed on the front and rear sides of both ends of the drying box 1. Rotating rollers 4 are rotatably installed between the fixed plates 3 away from the drying box 1 through sealed bearings. Stainless steel mesh belts 5 are sleeved between the rotating rollers 4. The end of one of the rotating rollers 4 passes through the interior of the fixed plate 3 and is fixedly connected to the output end of the servo motor 6. At the same time, the outer wall of the servo motor 6 is fixed to one side of the fixed plate 3 through the mounting plate. The top of the stainless steel mesh belt 5 passes through the interior of the drying box 1 and the inlet / outlet 2, and the bottom of the stainless steel mesh belt 5 is located below the drying box 1.

[0025] The push-pull material mechanism includes an electric push rod 7. The electric push rod 7 is fixed to the outside of the drying box 1, and the output end of the electric push rod 7 passes through the side wall of the drying box 1 and is fixedly connected to one side of the movable plate 8. The side of the movable plate 8 is in contact with the inner wall of the drying box 1, and the output end of the electric push rod 7 is slidably connected to the side wall of the drying box 1. The bottom of the movable plate 8 is fixed to the inner wall of the drying box 1 near the inner wall, and the bottom of the movable plate 8 is fixed to the second material-pushing plate 10 away from the inner wall of the drying box 1. The bottoms of the first material-pushing plate 9 and the second material-pushing plate 10 are both in contact with the top of the stainless steel mesh belt 5. The electric push rod 7 drives the movable plate 8 to reciprocate, which can drive the first material-pushing plate 9 and the second material-pushing plate 10 to continuously turn the material.

[0026] The first material pushing plate 9 and the second material pushing plate 10 are both distributed at equal intervals at the bottom of the movable plate 8, and the first material pushing plate 9 and the second material pushing plate 10 are staggered, which increases the pushing range and allows the material to be pushed and pulled.

[0027] The hot air conveying mechanism includes an air collecting plate 11. The air collecting plate 11 is fixed to the top of the drying chamber 1, and an air collecting cavity 12 is opened inside the air collecting plate 11. Air outlet holes 13 are evenly opened at the bottom of the air collecting cavity 12. An air outlet pipe 14 is fixed at the center of the top of the air collecting cavity 12. The end of the air outlet pipe 14 passes through the air collecting plate 11 and the top of the drying chamber 1 and is fixedly connected to the output end of the hot air blower 15. The hot air blower 15 is fixed to the top of the drying chamber 1, and an air inlet pipe 16 is provided at the input end of the hot air blower 15.

[0028] An exhaust pipe 17 is provided at the bottom of one side of the drying oven 1, and the ends of the exhaust pipe 17 and the air inlet pipe 16 are threaded with a cover 18. A filter screen is provided in the middle of the cover 18. The air collection chamber 12 can evenly distribute the hot air delivered by the hot air blower 15 to each air outlet 13 to form a surface airflow, avoid the accumulation of materials caused by strong wind at a single point, and facilitate the disassembly and cleaning of the filter screen. The filter screen can block external dust.

[0029] A controller 19 is provided on one side of the fixed plate 3, and a temperature sensor 21 is provided on the inner wall of the drying oven 1. The controller 19 is electrically connected to the servo motor 6, the electric push rod 7, the hot air blower 15 and the temperature sensor 21.

[0030] The drying oven 1 has a fixed flat plate 20 inside, and the bottom of the flat plate 20 is 1 cm away from the top of the stainless steel mesh belt 5. The flat plate 20 can flatten the material that is piled too thickly on the stainless steel mesh belt 5 to a thickness of 1 cm, ensuring that hot air can penetrate to the bottom layer of the material and avoid drying differences caused by uneven thickness.

[0031] Working Principle: When using this hot air drying conveyor belt for plant materials, the plant materials to be dried are first placed onto the stainless steel mesh belt 5 through the inlet / outlet 2 at one end of the drying chamber 1. The servo motor 6 is started, driving the rotating roller 4 to rotate, thereby causing the stainless steel mesh belt 5 to carry the plant materials into the drying chamber 1. When the material passes under the spreading plate 20, since the bottom of the spreading plate 20 is only 1 cm away from the top of the stainless steel mesh belt 5, it will flatten any excessively thick material, keeping the material thickness at about 1 cm, which facilitates uniform drying in the subsequent process.

[0032] At the same time, the hot air blower 15 is started, and the outside air enters the hot air blower 15 through the air inlet pipe 16 and is heated. The heated hot air enters the air collecting chamber 12 of the air collecting plate 11 through the air outlet pipe 14, and then is evenly blown onto the plant material on the stainless steel mesh belt 5 through the air outlet holes 13 evenly opened at the bottom of the air collecting chamber 12, so as to heat and dry the material.

[0033] During the drying process, the electric push rod 7 drives the movable plate 8 to reciprocate within the drying chamber 1, and the first and second material-pushing plates 9 and 10 at the bottom of the movable plate 8 move accordingly. Because the first and second material-pushing plates 9 and 10 are staggered, they can push, pull, and tumble the plant materials during the movement, allowing the upper and lower layers of the materials to exchange, ensuring all materials are fully exposed to the heat and preventing insufficient drying of the bottom layer materials.

[0034] The moisture generated during the drying process will be discharged through the exhaust pipe 17 at the bottom of one side of the drying chamber 1. The filter screen in the middle of the end cover 18 of the air inlet pipe 16 and the exhaust pipe 17 can prevent external impurities from entering the drying chamber 1.

[0035] Finally, the dried plant materials are conveyed out from the inlet / outlet 2 at the other end of the drying chamber 1 via the stainless steel mesh belt 5, completing the entire drying and conveying process.

[0036] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A hot air drying mesh belt conveyor for plant raw materials, comprising a drying chamber (1), characterized in that: The drying box (1) has inlet and outlet ports (2) at both ends, and a conveying mechanism is provided on the drying box (1). A push-pull material mechanism is provided inside the drying box (1), and a hot air conveying mechanism is provided at the top inside the drying box (1).

2. The hot air drying mesh belt conveyor for plant raw materials according to claim 1, characterized in that: The conveying mechanism includes a fixed plate (3). Fixed plates (3) are fixed on the front and rear sides of both ends of the drying box (1). Rotating rollers (4) are rotatably installed between the fixed plates (3) away from the drying box (1) through sealed bearings. Stainless steel mesh belts (5) are sleeved between the rotating rollers (4). The end of one of the rotating rollers (4) passes through the interior of the fixed plate (3) and is fixedly connected to the output end of the servo motor (6). At the same time, the outer wall of the servo motor (6) is fixed to one side of the fixed plate (3) through the mounting plate. The top of the stainless steel mesh belt (5) passes through the interior of the drying box (1) and the inlet / outlet (2). The bottom of the stainless steel mesh belt (5) is located below the drying box (1).

3. The hot air drying mesh belt conveyor for plant raw materials according to claim 2, characterized in that: The push-pull material mechanism includes an electric push rod (7). The electric push rod (7) is fixed on the outside of the drying box (1). The output end of the electric push rod (7) passes through the side wall of the drying box (1) and is fixedly connected to one side of the movable plate (8). The side of the movable plate (8) is in contact with the inner wall of the drying box (1). The output end of the electric push rod (7) is slidably connected to the side wall of the drying box (1). The bottom of the movable plate (8) is fixed with a first material feeding plate (9) near the inner wall of the drying box (1). The bottom of the movable plate (8) is fixed with a second material feeding plate (10) away from the inner wall of the drying box (1). The bottoms of the first material feeding plate (9) and the second material feeding plate (10) are both in contact with the top of the stainless steel mesh belt (5).

4. The hot air drying mesh belt conveyor for plant raw materials according to claim 3, characterized in that: The first material-pushing plate (9) and the second material-pushing plate (10) are both distributed at equal intervals at the bottom of the movable plate (8), and the first material-pushing plate (9) and the second material-pushing plate (10) are staggered.

5. The hot air drying mesh belt conveyor for plant raw materials according to claim 4, characterized in that: The hot air conveying mechanism includes an air collecting plate (11). The top of the drying box (1) is fixed with the air collecting plate (11), and an air collecting cavity (12) is opened inside the air collecting plate (11). Air outlet holes (13) are evenly opened at the bottom of the air collecting cavity (12). An air outlet pipe (14) is fixed at the center of the top of the air collecting cavity (12). The end of the air outlet pipe (14) passes through the air collecting plate (11) and the top of the drying box (1) and is fixedly connected to the output end of the hot air blower (15). The hot air blower (15) is fixed to the top of the drying box (1), and an air inlet pipe (16) is provided at the input end of the hot air blower (15).

6. The hot air drying mesh belt conveyor for plant raw materials according to claim 5, characterized in that: An exhaust pipe (17) is provided at the bottom of one side of the drying oven (1), and the ends of the exhaust pipe (17) and the air inlet pipe (16) are threaded with a cover (18), and a filter screen is provided in the middle of the cover (18).

7. The hot air drying mesh belt conveyor for plant raw materials according to claim 6, characterized in that: A controller (19) is provided on one side of the fixed plate (3), and a temperature sensor (21) is provided on the inner wall of the drying box (1). The controller (19) is electrically connected to the servo motor (6), the electric push rod (7), the hot air blower (15), and the temperature sensor (21).

8. The hot air drying mesh belt conveyor for plant raw materials according to claim 7, characterized in that: The drying oven (1) has a flat plate (20) fixed inside, and the bottom of the flat plate (20) is 1 cm away from the top of the stainless steel mesh belt (5).

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