A direct-fired hot air drying equipment
By using the material guiding structure and follow-up fan design of the direct-fired hot air drying equipment, the problem of manually sieving out broken leaves before drying rapeseed has been solved, achieving efficient drying and automatic sieving out of broken leaves.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGE COUNTY JIANSHAN FOOD CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-07-17
AI Technical Summary
In current rapeseed oil production, broken leaves need to be manually sifted out before the rapeseed is dried, resulting in low efficiency.
The equipment uses a direct-fired hot air drying system. Through the material guiding structure and follow-up fan design, the drying time is extended by using a spiral drying tube, and hot air is used to discharge broken leaves. Combined with the feed pipe design, broken leaves are screened out.
It achieves efficient drying and automatic screening of broken leaves, improving drying efficiency and quality.
Smart Images
Figure CN224517303U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rapeseed oil production and processing, specifically, it relates to a direct-fired hot air drying device. Background Technology
[0002] Rapeseed oil is the world's third largest vegetable oil, extracted from rapeseed. It has attracted much attention due to its balanced fatty acid composition, high smoke point, and wide range of uses.
[0003] One stage in the rapeseed oil production process is drying the rapeseed. Before drying, the broken leaves in the rapeseed need to be screened out to improve the quality of the rapeseed. Screening the rapeseed requires both labor costs and time, which indirectly reduces the production efficiency of rapeseed oil.
[0004] In view of this, this utility model is proposed. Utility Model Content
[0005] To solve the aforementioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:
[0006] A direct-fired hot air drying device, comprising:
[0007] The insulation cylinder is a hollow cylinder with an opening at the bottom of the cavity and a feed pipe installed at an eccentric position at the top of the insulation cylinder.
[0008] The blower is fixedly connected to the top center of the insulation cylinder, and the bottom of the blower can communicate with the inside of the insulation cylinder cavity. The burner is fixedly connected to the top of the blower, and the burner can communicate with the inside of the blower cavity.
[0009] The material guiding structure is set inside the cavity of the heat-insulating cylinder for drying rapeseed. The material guiding structure includes a mixing chamber and a drying pipe. The mixing chamber is fixedly connected to the top of the cavity of the heat-insulating cylinder, and the drying pipe is fixedly connected to the wall of the mixing chamber. The mixing chamber and the drying pipe are hollow inside.
[0010] In a preferred embodiment of this utility model, the mixing chamber is a right-angled trapezoidal box with the inclined surface of the mixing chamber facing downwards. The drying tube is a spiral round tube, the top end of which can be fixedly connected to the side wall of the mixing chamber, the top end of which can communicate with the cavity of the mixing chamber, the top of the mixing chamber can communicate with the feed pipe at the top of the insulation cylinder, and the top of the mixing chamber can also communicate with the bottom of the blower.
[0011] In a preferred embodiment of the present invention, the material guiding structure further includes a first anti-backflow plate, a second anti-backflow plate, and an air inlet slot. The first anti-backflow plate is fixedly connected to the inner wall of the mixing chamber, the second anti-backflow plate is also fixedly connected to the inner wall of the mixing chamber, and the air inlet slot is opened on the side wall of the mixing chamber.
[0012] In a preferred embodiment of the present invention, the second anti-backflow plate and the first anti-backflow plate are rectangular plates. The second anti-backflow plate is fixedly connected to the top of the mixing chamber and is obliquely placed inside the mixing chamber. The second anti-backflow plate is located at the connection between the mixing chamber and the blower.
[0013] In a preferred embodiment of the present invention, the air inlet slot is a rectangular slot that extends through the side wall of the mixing chamber. The first anti-backflow plate is located above the air inlet slot and is also inclined.
[0014] In a preferred embodiment of this utility model, the bottom of the drying tube is fixedly connected to the bottom tube, which is cylindrical. The top side of the bottom tube is connected to the bottom end of the drying tube. A third anti-backflow plate is fixedly connected to the top of the cavity of the bottom tube. The third anti-backflow plate is obliquely placed in the cavity of the bottom tube and is located above the connection between the drying tube and the bottom tube. The bottom of the bottom tube can be connected to the bottom opening of the insulation cylinder.
[0015] In a preferred embodiment of the present invention, a follower fan is rotatably connected to the top of the bottom tube. The follower fan is fan-blade shaped, and a bracket is installed at the top of the bottom tube. The follower fan is rotatably connected to the wall of the bracket.
[0016] Compared with the prior art, the present invention has the following advantages:
[0017] 1. By setting up a material guiding structure, rapeseed can be dried by guiding it. The spiral drying tube extends the drying time of rapeseed in the drying tube cavity. In addition, the feed pipe that can discharge hot air upwards blows out the broken leaves of rapeseed directly when it is poured into the feed pipe. Thus, this solution can not only achieve high-quality drying effect, but also remove broken leaves from rapeseed.
[0018] 2. By setting up a follow-up fan that can blow hot air, the upward movement rate of hot air in the insulation cylinder cavity can be increased, thereby effectively increasing the flow rate of hot air when the feed pipe screens out broken leaves.
[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0020] In the attached diagram:
[0021] Figure 1This is a perspective view of the present utility model;
[0022] Figure 2 This is a cross-sectional view of the inner cavity of the insulation cylinder of this utility model;
[0023] Figure 3 This is a diagram showing the combination of the drying tube and the mixing chamber of this utility model;
[0024] Figure 4 This is a cross-sectional view of the mixing chamber of this utility model;
[0025] Figure 5 This is a three-dimensional view of the drying tube of this utility model.
[0026] In the diagram: 20, insulation cylinder; 21, blower; 22, burner; 30, mixing chamber; 31, first anti-backflow plate; 32, second anti-backflow plate; 33, air inlet slot; 34, drying pipe; 35, bottom pipe; 36, third anti-backflow plate; 37, follow-up fan. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0028] like Figure 1 , Figure 2 and Figure 3 As shown, a direct-fired hot air drying device includes: a heat preservation cylinder 20, which is a hollow cylinder with an opening at the bottom of the cavity and a feed pipe installed at an eccentric position at the top of the heat preservation cylinder 20.
[0029] Blower 21 is fixedly connected to the top center of insulation cylinder 20, and the bottom of blower 21 can communicate with the cavity of insulation cylinder 20. Burner 22 is fixedly connected to the top of blower 21, and burner 22 can communicate with the cavity of blower 21. The models used by burner 22 and blower 21 are the same as those used in the prior art (publication number: CN222460158U). Blower 21 and burner 22 are both electrically connected to a power source. This is the prior art, so it will not be described in detail here.
[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a material guiding structure is set inside the cavity of the heat-insulating cylinder 20 for drying rapeseed. The material guiding structure includes a mixing chamber 30 and a drying pipe 34. The mixing chamber 30 is fixedly connected to the top of the cavity of the heat-insulating cylinder 20, and the drying pipe 34 is fixedly connected to the wall of the mixing chamber 30. The cavity of the mixing chamber 30 and the drying pipe 34 is hollow.
[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the mixing chamber 30 is a right-angled trapezoidal box with its inclined surface facing downwards. The drying pipe 34 is a spiral-shaped round pipe, the top of which can be fixedly connected to the side wall of the mixing chamber 30. The top of the drying pipe 34 can communicate with the inside of the mixing chamber 30. The top of the mixing chamber 30 can communicate with the feed pipe at the top of the insulation cylinder 20. The top of the mixing chamber 30 can also communicate with the bottom of the blower 21. The material guiding structure also includes a first anti-backflow plate 31, a second anti-backflow plate 32, and an air inlet slot 33. The first anti-backflow plate 31 is fixedly connected to the inner wall of the mixing chamber 30, and the second anti-backflow plate 32 is also fixedly connected to the inner wall of the mixing chamber 30. The air inlet slot 33 is opened on the side wall of the mixing chamber 30. The second anti-backflow plate 32 and the first anti-backflow plate 31 are rectangular plates. The second anti-backflow plate 32 is fixedly connected to the side wall of the mixing chamber 30. The second anti-backflow plate 32 is obliquely placed inside the mixing chamber 30 and located at the connection between the mixing chamber 30 and the blower 21. The air inlet slot 33 is rectangular and is opened through the side wall of the mixing chamber 30. The first anti-backflow plate 31 is located above the air inlet slot 33 and is also obliquely placed. The bottom of the drying pipe 34 is fixedly connected to the bottom pipe 35. The bottom pipe 35 is cylindrical and its top side is connected to the bottom end of the drying pipe 34. The top of the bottom pipe 35 is fixedly connected to the third anti-backflow plate 36. The third anti-backflow plate 36 is obliquely placed inside the bottom pipe 35 and is located above the connection between the drying pipe 34 and the bottom pipe 35. The bottom of the bottom pipe 35 can be connected to the bottom opening of the insulation cylinder 20.
[0032] In practical use, first turn on the power and pour the rapeseed to be dried into the feed pipe at the top of the insulation cylinder 20. When the power is turned on, the burner 22 generates hot air, which is then delivered to the mixing chamber 30 by the blower 21. After being blown by the blower 21, the hot air enters the mixing chamber 30 from above the second anti-backflow plate 32, and then enters the drying pipe 34 from the connection between the mixing chamber 30 and the drying pipe 34. Some of the hot air passes under the second anti-backflow plate 32 and moves towards the air inlet slot 33. The rapeseed enters the mixing chamber 30 from the feed pipe at the top of the insulation cylinder 20, passes under the second anti-backflow plate 32 from the top slope of the first anti-backflow plate 31, and then moves to the connection between the mixing chamber 30 and the drying pipe 34. The air blown by the blower 21 can carry the rapeseed into the cavity of the drying tube 34. At this time, the rapeseed will come into contact with the hot air and gradually dry as it moves in the cavity of the drying tube 34. When the rapeseed moves from the bottom of the drying tube 34 to the cavity of the bottom tube 35, it will be directly discharged from the bottom of the bottom tube 35. Some of the hot air in the cavity of the bottom tube 35 will move upward from the gap between the third anti-backflow plate 36 and the cavity of the bottom tube 35 to the cavity of the heat preservation cylinder 20. The hot air in the cavity of the heat preservation cylinder 20 will move from the air inlet slot 33 to the cavity of the mixing chamber 30, and then be discharged upward from the mixing chamber 30 and the feed pipe. When the rapeseed is poured into the feed pipe, the hot air rising in the feed pipe will blow away the broken leaves in the rapeseed, and the rapeseed will directly enter the cavity of the mixing chamber 30 and then enter the cavity of the drying tube 34.
[0033] In summary, by setting up a material guiding structure, rapeseed can be dried by guiding it. The spiral drying tube 34 extends the drying time of the rapeseed in the drying tube 34 cavity. In addition, the feed pipe that can discharge hot air upwards allows the broken leaves in the rapeseed to be blown out directly when the rapeseed is poured into the feed pipe. Thus, this solution can not only achieve a high-quality drying effect, but also remove broken leaves from the rapeseed.
[0034] like Figure 3 As shown, a follower fan 37 is rotatably connected to the top of the bottom tube 35. The follower fan 37 is fan-blade shaped. A bracket is installed at the top of the bottom tube 35. The follower fan 37 is rotatably connected to the wall of the bracket.
[0035] In practical use, when hot air is discharged through the opening at the top of the bottom pipe 35, the follower fan 37 can automatically rotate as the hot air rises.
[0036] In summary, by setting up a follower fan 37 that can blow hot air, the upward movement rate of hot air in the heat preservation cylinder 20 can be increased, thereby effectively increasing the flow rate of hot air when the feed pipe screens out broken leaves.
[0037] Working principle: First, turn on the power and pour the rapeseed to be dried into the feed pipe at the top of the insulation cylinder 20. When the power is turned on, the burner 22 generates hot air, which is then delivered to the mixing chamber 30 by the blower 21. The hot air, after being blown by the blower 21, enters the mixing chamber 30 from above the second anti-backflow plate 32, and then enters the drying pipe 34 from the connection between the mixing chamber 30 and the drying pipe 34. Some of the hot air passes under the second anti-backflow plate 32 and moves towards the air inlet slot 33. The rapeseed enters the mixing chamber 30 from the feed pipe at the top of the insulation cylinder 20, passes under the second anti-backflow plate 32 from the top slope of the first anti-backflow plate 31, and then moves to the connection between the mixing chamber 30 and the drying pipe 34. The air blown by the blower 21 can carry the rapeseed into the cavity of the drying tube 34. At this time, the rapeseed will come into contact with the hot air and gradually dry as it moves in the cavity of the drying tube 34. When the rapeseed moves from the bottom of the drying tube 34 to the cavity of the bottom tube 35, it will be directly discharged from the bottom of the bottom tube 35. Some of the hot air in the cavity of the bottom tube 35 will move upward from the gap between the third anti-backflow plate 36 and the cavity of the bottom tube 35 to the cavity of the heat preservation cylinder 20. The hot air in the cavity of the heat preservation cylinder 20 will move from the air inlet slot 33 to the cavity of the mixing chamber 30, and then be discharged upward from the mixing chamber 30 and the feed pipe. When the rapeseed is poured into the feed pipe, the hot air rising in the feed pipe will blow away the broken leaves in the rapeseed, and the rapeseed will directly enter the cavity of the mixing chamber 30 and then flow into the cavity of the drying tube 34.
[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A direct-fired hot air drying apparatus, characterized by, include: The heat insulation cylinder (20) is a hollow cylinder with an opening at the bottom of the cavity and a feed pipe installed at the eccentric position at the top of the heat insulation cylinder (20). Blower (21) is fixedly connected to the top center of the insulation cylinder (20), and the bottom of the blower (21) can communicate with the cavity of the insulation cylinder (20). Burner (22) is fixedly connected to the top of the blower (21), and the burner (22) can communicate with the cavity of the blower (21). The material guiding structure is set inside the cavity of the heat preservation cylinder (20) for drying rapeseed. The material guiding structure includes a mixing chamber (30) and a drying pipe (34). The mixing chamber (30) is fixedly connected to the top of the cavity of the heat preservation cylinder (20), and the drying pipe (34) is fixedly connected to the wall of the mixing chamber (30). The cavity of the mixing chamber (30) and the drying pipe (34) are hollow.
2. A direct-fired hot air drying apparatus according to claim 1, wherein The mixing chamber (30) is a right-angled trapezoidal box with the inclined surface of the mixing chamber (30) facing downwards. The drying tube (34) is a spiral round tube. The top end of the drying tube (34) can be fixedly connected to the side wall of the mixing chamber (30). The top end of the drying tube (34) can communicate with the cavity of the mixing chamber (30). The top of the mixing chamber (30) can communicate with the feed pipe at the top of the heat preservation cylinder (20). The top of the mixing chamber (30) can also communicate with the bottom of the blower (21).
3. A direct-fired hot air drying apparatus according to claim 1, wherein The material guiding structure also includes a first anti-backflow plate (31), a second anti-backflow plate (32), and an air inlet slot (33). The first anti-backflow plate (31) is fixedly connected to the inner wall of the mixing chamber (30), the second anti-backflow plate (32) is also fixedly connected to the inner wall of the mixing chamber (30), and the air inlet slot (33) is opened on the side wall of the mixing chamber (30).
4. A direct-fired hot air drying apparatus according to claim 3, wherein The second anti-backflow plate (32) and the first anti-backflow plate (31) are rectangular plates. The second anti-backflow plate (32) is fixedly connected to the top of the cavity of the mixing chamber (30). The second anti-backflow plate (32) is obliquely placed in the cavity of the mixing chamber (30). The second anti-backflow plate (32) is located at the connection between the mixing chamber (30) and the blower (21).
5. A direct-fired hot air drying apparatus according to claim 3, wherein The air inlet slot (33) is a rectangular slot, and the air inlet slot (33) is opened through the side wall of the mixing chamber (30). The first anti-backflow plate (31) is located above the air inlet slot (33) and is also in an oblique position.
6. A direct-fired hot air drying apparatus as defined in claim 1, wherein The bottom of the drying tube (34) is fixedly connected to the bottom tube (35). The bottom tube (35) is cylindrical. The top side of the bottom tube (35) is connected to the bottom end of the drying tube (34). A third anti-backflow plate (36) is fixedly connected to the top of the cavity of the bottom tube (35). The third anti-backflow plate (36) is obliquely placed in the cavity of the bottom tube (35). The third anti-backflow plate (36) is located above the connection between the drying tube (34) and the bottom tube (35). The bottom of the bottom tube (35) can be connected to the bottom opening of the heat preservation cylinder (20).
7. A direct-fired hot air drying apparatus according to claim 6, wherein The top of the bottom tube (35) is also rotatably connected to a follower fan (37), which is fan-blade shaped. A bracket is installed at the top of the bottom tube (35), and the follower fan (37) is rotatably connected to the wall of the bracket.