Energy-saving structure of double-air-duct three-dimensional drying machine

Abstract

The utility model belongs to dryer technical field discloses a kind of energy-saving structure of double air duct three-dimensional dryer, the inside of drying cavity is equipped with the air pipe extending to the bottom of drying cavity downward, the air pipe is stretched out dryer body outside and is connected with exhaust pipe, and the upper portion of the air pipe is equipped with wind baffle, the outer wall of the air pipe is equipped with multiple air holes, and the air pipe is equipped with vent in the area above wind baffle;The lower part of the dryer body is equipped with first hot gas inlet pipe and second hot gas inlet pipe, and the air outlet end of the first hot gas inlet pipe is communicated with the bottom of air pipe, and the inner wall of the dryer body is equipped with multiple first material slow-release apron, and the air pipe is equipped with multiple second material slow-release apron, and the first material slow-release apron and second material slow-release apron are alternately arranged. The utility model prolongs contact time, can maximize high-temperature hot air efficiency, avoids repeated heating, and plays the role of energy saving.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and in particular to an energy-saving structure for a dual-duct three-dimensional dryer. Background Technology

[0002] In major grain-producing areas, due to the large output and lack of sufficient drying space, the purchased grain has a high moisture content, exceeding the standard moisture content for storage. If the temperature and humidity of the environment where the grain is stored meet the conditions for microbial growth and reproduction, large quantities of grain will become moldy. If cloudy or rainy days occur during the grain purchase period, the probability of mold growth is even greater. In addition, even if the grain meets the standard moisture content at the time of storage, and the moisture content is within the safe range, natural re-moistening can still occur, and the grain needs to be dried regularly to ensure that it does not become moldy. However, in existing three-dimensional dryers, the material falls from the top to the bottom during drying, resulting in a high material speed and high air velocity. This leads to a short contact time with hot air, resulting in low hot air utilization efficiency and high unit energy consumption. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides an energy-saving structure for a dual-duct three-dimensional dryer, which allows the material to fully contact with hot air, reduces local overheating or drying dead zones, shortens the overall drying time, thereby reducing unit energy consumption, extending contact time, maximizing the utilization of high-temperature hot air efficiency, avoiding repeated heating, and thus achieving energy saving.

[0004] The technical solution adopted by this utility model is: an energy-saving structure of a dual-duct three-dimensional dryer, including a dryer body with a drying chamber inside, an air duct extending downward to the bottom of the drying chamber inside the drying chamber, the air duct extending out of the dryer body and connected to an exhaust pipe, and a baffle plate on the upper part of the air duct, multiple ventilation holes on the outer wall of the air duct, and an opening in the area above the baffle plate of the air duct.

[0005] The lower part of the dryer body is provided with a first hot air inlet pipe and a second hot air inlet pipe, and the air outlet end of the first hot air inlet pipe is connected to the bottom of the air duct. The inner wall of the dryer body is provided with a plurality of first material-retarding skirts, and the air duct is provided with a plurality of second material-retarding skirts. The first material-retarding skirts and the second material-retarding skirts are arranged alternately. A material discharge gap is formed between the bottom end of the first material-retarding skirt and the air duct, and a material discharge gap is also formed between the bottom end of the second material-retarding skirt and the dryer body.

[0006] Preferably, the first and second buffer skirts are provided with a plurality of elongated ventilation holes, and the width of the ventilation holes is smaller than the external dimensions of the material being dried.

[0007] Preferably, both the first and second buffer skirts are inclined.

[0008] Preferably, the bottom of the dryer body is funnel-shaped, with a discharge pipe at the lowest end, and a feed pipe at the upper part of the dryer body. The discharge pipe and the feed pipe are connected by a conveyor, which is used to transport the material at the bottom of the dryer body to the feed pipe and return it to the inside of the dryer body.

[0009] Preferably, both the second and first buffer skirts are provided with impact protrusions.

[0010] Preferably, both the first hot air inlet pipe and the second hot air inlet pipe are equipped with an inlet air temperature sensor.

[0011] Preferably, the exhaust pipe is equipped with an exhaust temperature sensor and a humidity sensor.

[0012] The beneficial effects of this utility model are as follows: This utility model features a duct extending downwards to the bottom of the drying chamber, with a baffle plate installed near the upper end of the duct. Alternating first material-delaying skirts are installed between the dryer body and the duct, extending the material's path and slowing it down. This prolongs the time the material spends in the drying chamber, allowing for more contact with hot air and improving the drying effect. Furthermore, the baffle plate on the duct reduces wind speed, ensuring the airflow only exits laterally through the ventilation holes. This lateral airflow, combined with upward airflow from the second hot air inlet pipe, provides excellent contact and drying for both the material and the air. This ensures full contact between the material and hot air, reducing localized overheating or drying dead zones, shortening the overall drying time, reducing unit energy consumption, maximizing contact time, and avoiding repeated heating, thus achieving energy savings. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the first buffer skirt of this utility model;

[0016] Figure 3 This is a partial structural schematic diagram of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Dryer body; 2. Drying chamber; 3. Air duct; 4. Exhaust pipe; 5. Baffle plate; 6. First hot air inlet pipe; 7. First buffer skirt; 8. Second buffer skirt; 9. Ventilation hole; 10. Discharge pipe; 11. Feed pipe; 12. Conveyor; 13. Impact protrusion; 14. Inlet air temperature sensor; 15. Outlet air temperature sensor; 16. Humidity sensor; 17. Outlet; 18. Second hot air inlet pipe; 19. Ventilation hole; 20. Discharge pipe; 21. Discharge valve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0019] like Figures 1-3 As shown, this embodiment provides a dryer body 1 including a drying chamber 2 inside. The drying chamber 2 has an air duct 3 extending downward to the bottom of the drying chamber 2. The air duct 3 extends out of the dryer body 1 and is connected to an exhaust pipe 4. The upper part of the air duct 3 is provided with a baffle plate 5. The outer wall of the air duct 3 is provided with multiple ventilation holes 19. The air duct 3 has an opening 17 in the area above the baffle plate 5. The lower part of the dryer body 1 is provided with a first hot air inlet pipe 6 and a second hot air inlet pipe 18. The air outlet end of the first hot air inlet pipe 6 is connected to the bottom of the air duct 3. The inner wall of the dryer body 1 is provided with multiple first material-relieving skirts 7, and the air duct 3 is provided with multiple second material-relieving skirts 8. The first material-relieving skirts 7 and the second material-relieving skirts 8 are arranged alternately. The bottom end of the first material-relieving skirt 7 forms a discharge gap with the air duct 3, and the bottom end of the second material-relieving skirt 8 also forms a discharge gap with the dryer body 1.

[0020] By providing an air duct 3 extending downwards to the bottom of the drying chamber 2 inside the drying chamber 2, and installing a baffle plate 5 near the upper end of the air duct 3, and by alternately setting the bottom end of the first material-delaying skirt 7 between the dryer body 1 and the air duct 3, the path of the material falling up and down is extended, while also blocking and slowing it down. This prolongs the time the material spends in the drying chamber 2, allowing it to fully contact the hot air and improving the drying effect. Furthermore, by installing the baffle plate 5 on the air duct 3, the wind speed is reduced, so the air in the air duct 3 can only be blown out laterally from the ventilation hole 19. This lateral blowing of the raw material, combined with the upward blowing of the hot air entering through the second hot air inlet pipe 18, ensures good contact drying effect between the two and the raw material, allowing the material to fully contact the hot air, reducing local overheating or drying dead zones, shortening the overall drying time, thereby reducing unit energy consumption, extending contact time, maximizing the utilization of high-temperature hot air efficiency, avoiding repeated heating, and achieving energy saving.

[0021] The first and second buffer skirts 7 and 8 are provided with a plurality of elongated ventilation holes 9. This allows hot air to pass through the first and second buffer skirts 7 and 8, ventilating and drying the material as it rolls along them. This ensures sufficient contact between the hot air and the material. Furthermore, the width of the ventilation holes 9 is smaller than the external dimensions of the material being dried, preventing material jamming.

[0022] The first buffer skirt 7 and the second buffer skirt 8 are both inclined, which facilitates the material to roll downwards along the first buffer skirt 7 and the second buffer skirt 8.

[0023] The bottom of the dryer body 1 is funnel-shaped, with a discharge pipe 10 at the lowest end and a feed pipe 11 at the upper part. The discharge pipe 10 and the feed pipe 11 are connected by a conveyor 12. The conveyor 12 is used to transport the material at the bottom of the dryer body 1 to the feed pipe 11 and back into the dryer body 1, thus enabling cyclic heating and drying. The conveyor 12 is also equipped with a discharge pipe 20, and the discharge pipe 20 is equipped with a discharge valve 21 for convenient material discharge.

[0024] Both the second buffer skirt 8 and the first buffer skirt 7 are provided with impact protrusions 13, which facilitates the impact and dispersal of materials that are stuck together.

[0025] The first hot air inlet pipe 6 and the second hot air inlet pipe 18 are both equipped with an inlet air temperature sensor 14, and the exhaust pipe 4 is equipped with an outlet air temperature sensor 15 and a humidity sensor 16. The inlet air temperature sensor detects the temperature of the inlet hot air, and the outlet air temperature sensor and the humidity sensor 16 are used to detect the outlet air temperature and humidity, which facilitates the adjustment of the hot air temperature.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0027] Working principle: An air duct 3 extending downwards to the bottom of the drying chamber 2 is provided inside the drying chamber 2. A baffle plate 5 is installed near the upper part of the air duct 3. The bottom end of the first material-delaying skirt 7 is alternately set between the dryer body 1 and the air duct 3, which extends the path of the material falling up and down and also has the effect of blocking and slowing down. This prolongs the time the material spends in the drying chamber 2, so that it can fully contact the hot air and improve the drying effect. The baffle plate 5 on the air duct 3 reduces the wind speed, so the air in the air duct 3 can only blow out from the side of the ventilation hole 19. This side blowing of the raw material, combined with the upward blowing of the hot air entering through the second hot air inlet pipe 18, provides a good contact drying effect between the material and the raw material. This ensures that the material is fully in contact with the hot air, reduces local overheating or drying dead zones, shortens the overall drying time, thereby reducing unit energy consumption, prolonging the contact time, maximizing the utilization of high-temperature hot air efficiency, avoiding repeated heating, and achieving energy saving.

[0028] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An energy-saving structure for a dual-duct three-dimensional dryer, characterized in that: The dryer body (1) includes a drying chamber (2) inside. The drying chamber (2) is provided with an air duct (3) extending downward to the bottom of the drying chamber (2). The air duct (3) extends out of the dryer body (1) and is connected to an exhaust pipe (4). The upper part of the air duct (3) is provided with a baffle plate (5). The outer wall of the air duct (3) is provided with multiple ventilation holes (19). The air duct (3) is provided with an opening (17) in the area above the baffle plate (5). The lower part of the dryer body (1) is provided with a first hot air inlet pipe (6) and a second hot air inlet pipe (18), and the air outlet end of the first hot air inlet pipe (6) is connected to the bottom of the air duct (3). The inner wall of the dryer body (1) is provided with a plurality of first material-retarding skirts (7), and the air duct (3) is provided with a plurality of second material-retarding skirts (8). The first material-retarding skirts (7) and the second material-retarding skirts (8) are arranged alternately. The bottom end of the first material-retarding skirt (7) forms a discharge gap with the air duct (3), and the bottom end of the second material-retarding skirt (8) also forms a discharge gap with the dryer body (1).

2. The energy-saving structure of a dual-duct three-dimensional dryer according to claim 1, characterized in that: The first buffer skirt (7) and the second buffer skirt (8) are provided with a plurality of elongated ventilation holes (9), and the width of the ventilation holes (9) is smaller than the external dimensions of the material being dried.

3. The energy-saving structure of a dual-duct three-dimensional dryer according to claim 1, characterized in that: The first buffer skirt (7) and the second buffer skirt (8) are both inclined.

4. The energy-saving structure of a dual-duct three-dimensional dryer according to claim 1, characterized in that: The bottom of the dryer body (1) is funnel-shaped, with a discharge pipe (10) at the lowest end, and a feed pipe (11) at the upper part of the dryer body (1). The discharge pipe (10) and the feed pipe (11) are connected by a conveyor (12). The conveyor (12) is used to transport the material at the bottom of the dryer body (1) to the feed pipe (11) and return it to the inside of the dryer body (1).

5. The energy-saving structure of a dual-duct three-dimensional dryer according to claim 1, characterized in that: Both the second buffer skirt (8) and the first buffer skirt (7) are provided with impact protrusions (13).

6. The energy-saving structure of a dual-duct three-dimensional dryer according to claim 1, characterized in that: Both the first hot air inlet pipe (6) and the second hot air inlet pipe (18) are equipped with inlet temperature sensors (14).

7. The energy-saving structure of a dual-duct three-dimensional dryer according to claim 1, characterized in that: The exhaust pipe (4) is equipped with an exhaust temperature sensor (15) and a humidity sensor (16).

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