Disc dryer

Abstract

The utility model relates to the technical field of disc type drying machines, in particular to a disc type drying machine which comprises a drying cylinder, a plurality of first drying discs and a plurality of second drying discs are arranged in the drying cylinder, and the first drying discs and the second drying discs are arranged in a staggered mode. The diameter of the first drying disc is smaller than that of the second drying disc, a hole for material circulation is formed in the middle of the first drying disc, a plurality of air inlet pipes are fixedly connected to one side of the drying cylinder, and a plurality of air outlet pipes are fixedly connected to the side, away from the air inlet pipes, of the drying cylinder. The number of the air outlet pipes and the number of the air inlet pipes are the same as the total number of the first drying discs and the second drying discs, the four air outlet pipes and the four air inlet pipes communicate with the first drying discs and the second drying discs correspondingly, and the first drying discs and the second drying discs are each of a hollow structure. Compared with the prior art, the problems that in the prior art, the content of gas needing to be heated is large, and the heat conversion efficiency is low are solved.

Description

Technical Field

[0001] This utility model relates to the field of disc dryer technology, and in particular to a disc dryer. Background Technology

[0002] The working principle of a disc dryer is based on the continuous feeding of wet material into the upper drying discs of the dryer via a feeder. Under the rotational motion of the rake arms and rake blades, the material flows along an exponential spiral line across the surface of the drying discs. The material is moved to the outer edge on the smaller drying discs and falls to the outer edge of the larger drying disc below. It then moves inward on the larger drying disc and falls into the next layer of smaller drying discs through the central discharge port. This alternating arrangement of drying discs allows the material to flow continuously throughout the entire dryer. Disc dryers, with their advantages of high efficiency, stability, and reliability, have been widely used and recognized in many fields.

[0003] In the prior art, Chinese patent document CN221992296U discloses a disc dryer, a drying cylinder, and a drying assembly. The drying cylinder is suspended above the ground by a load-bearing support and has an internal transmission assembly to drive the drying assembly to dry the wet material. The drying assembly includes several sets of first and second stirring assemblies spaced apart from the transmission assembly, which drive the first and second stirring assemblies to rotate. The top of the drying cylinder is equipped with a spray nozzle for spraying dust suppressant. When the first and second stirring assemblies rotate, the atomized dust suppressant is sprayed downwards from the top of the drying cylinder onto the wet material. Although the spray nozzle at the top of the drying cylinder and the spraying of atomized dust suppressant into the drying cylinder ensures that the dust suppressant is fully mixed with the wet material, avoiding dust in the workshop environment and affecting the health of workers, this technology is consistent with traditional methods in that the current method of heating gas is to directly inject it into the cylinder, which results in a relatively long time for the drying disc to reach the required temperature. Although some attempts have been made to inject gas directly into the drying pan, the lack of an effective gas-uniform guiding structure inside the pan has unfortunately hindered heat conduction, resulting in uneven heating of the entire drying pan. This not only affects the drying effect on the material but also forces both heating methods to consume large amounts of hot air, leading to low energy conversion efficiency.

[0004] Furthermore, we disclose a disc dryer to meet the practical needs of existing technologies that require a large content of heating gas and have low heat conversion efficiency. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a disc dryer to solve the problems of high heating gas content and low heat conversion efficiency in the prior art.

[0006] To achieve the above objectives, this utility model provides a disc dryer, including a drying cylinder. The drying cylinder contains multiple first drying discs and second drying discs arranged alternately. The diameter of each first drying disc is smaller than that of the second drying disc, and a hole for material flow is provided in the center. Multiple air inlet pipes are fixedly connected to one side of the drying cylinder, and multiple air outlet pipes are fixedly connected to the side of the drying cylinder away from the air inlet pipes. The number of air outlet pipes and air inlet pipes is the same as the total number of the first and second drying discs. There are four air outlet pipes and four air inlet pipes, each connected to one of the first and second drying discs. Both the first and second drying discs are hollow structures. Both the first and second drying trays are fixedly connected to a guide plate, which is used to uniformly guide the hot air entering the first and second drying trays. A servo motor is provided in the middle of the upper end face of the drying cylinder. The output end of the servo motor extends into the interior of the drying cylinder and is fixedly connected to a rake arm. The outer wall of the rake arm is fixedly connected to a cross on the upper end of the first and second drying trays respectively. Multiple connecting columns are fixedly connected to both sides of the lower end of the cross. The lower end of the multiple connecting columns is fixedly connected to a rake blade that pushes the material to fall from top to bottom. A material turning component is provided on one side of the rake blade. The material turning component is used to turn the material on the surface of the first and second drying trays.

[0007] Preferably, a diverter pipe is fixedly connected to one side of each of the plurality of air inlet pipes and one side of each of the plurality of air outlet pipes, and a connecting flange is fixedly connected to the middle of one side of each diverter pipe.

[0008] Preferably, both sides of the outer wall of the first drying tray and the second drying tray are fixedly connected with multiple fixing rods, and one end of each fixing rod is fixedly connected to the drying cylinder.

[0009] Preferably, the guide plate is fixedly connected inside the first drying tray, the cross-section of the guide plate is torsion spring shaped, and a through hole is provided on one side of the middle of the lower end face of the first drying tray and the second drying tray. The end of the air outlet pipe away from the splitter pipe is fixedly connected to the first drying tray and the second drying tray and communicates with the first drying tray and the second drying tray through the through hole.

[0010] Preferably, the material turning assembly includes a connecting seat fixedly connected to the middle of one end face of the rake blade, one end of the connecting seat is rotatably connected to a roller, and the outer wall of the roller is fixedly connected with a plurality of protruding balls at even intervals.

[0011] Preferably, a feed pipe is fixedly connected to one side of the middle of the upper end face of the drying cylinder. The feed pipe is used for feeding materials and discharging the gas evaporated by the heating of the internal materials.

[0012] Preferably, the lower end of the drying cylinder is conical, and a discharge pipe is fixedly connected to the middle of the lower end face of the drying cylinder.

[0013] The beneficial effects of this utility model are:

[0014] This disc dryer significantly improves drying efficiency and resource utilization. By incorporating guide plates inside the hollow first and second drying discs, it effectively guides the incoming hot air uniformly, increasing the residence time of the hot air within the discs. This not only accelerates the heating process of the drying discs but also ensures uniform temperature distribution, thereby significantly reducing hot air conversion losses and achieving energy savings. Furthermore, the material-turning component, driven by a servo motor, can turn the material on the surface of the drying discs when the rotating rod rotates, further promoting the uniformity of material heating and ensuring that all parts of the material receive sufficient drying treatment. This significantly improves the drying effect and product quality. In summary, this disc dryer, with its efficient hot air guiding structure and material-turning component, achieves efficient resource utilization and optimized drying effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional schematic diagram of the internal structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the internal structure of the first and second drying trays of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the first drying tray of this utility model.

[0021] The diagram is marked as follows:

[0022] 1. Drying drum; 2. Diverter pipe; 3. Air outlet pipe; 4. Discharge pipe; 5. Feed pipe; 6. Servo motor; 7. Air inlet pipe; 8. First drying disc; 9. Second drying disc; 10. Rake arm; 11. Rake blade; 12. Fixing rod; 13. Roller; 14. Convex ball; 15. Connecting seat; 16. Guide plate; 17. Through hole; 18. Connecting column; 19. Cross. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figures 1 to 5As shown, a disc dryer includes a drying cylinder 1. Multiple first drying discs 8 and second drying discs 9 are arranged inside the drying cylinder 1, alternating between the first and second drying discs 8 and 9. The diameter of the first drying disc 8 is smaller than that of the second drying disc 9, and a hole for material flow is opened in the middle. Multiple air inlet pipes 7 are fixedly connected to one side of the drying cylinder 1, and multiple air outlet pipes 3 are fixedly connected to the side of the drying cylinder 1 away from the air inlet pipes 7. The number of air outlet pipes 3 and air inlet pipes 7 is the same as the total number of the first drying discs 8 and second drying discs 9. There are four air outlet pipes and four air inlet pipes 7, each connected to one of the first drying discs 8 and one of the second drying discs 9. Both the first drying discs 8 and the second drying discs 9 are hollow structures. Inside each of the drying cylinders, a guide plate 16 is fixedly connected. The guide plate 16 is used to uniformly guide the hot air entering the first drying tray 8 and the second drying tray 9. A servo motor 6 is set in the middle of the upper end face of the drying cylinder 1. The output end of the servo motor 6 extends into the interior of the drying cylinder 1 and is fixedly connected to a rake arm 10. The outer wall of the rake arm 10 is fixedly connected to a cross 19 at the upper end of the first drying tray 8 and the second drying tray 9 respectively. Multiple connecting columns 18 are fixedly connected to both sides of the lower end of the cross 19. The lower end of the multiple connecting columns 18 is fixedly connected to a rake blade 11 that pushes the material to move and complete the falling from top to bottom. A material turning component is set on one side of the rake blade 11. The material turning component is used to turn the material on the surface of the first drying tray 8 and the second drying tray 9.

[0026] This disc dryer significantly improves drying efficiency and resource utilization. By installing guide plates 16 inside the hollow first drying disc 8 and second drying disc 9, it effectively achieves uniform guidance of the incoming hot air, increasing the residence time of the hot air inside the drying disc. This not only accelerates the heating process of the drying disc but also ensures the uniformity of temperature distribution, thereby greatly reducing the conversion loss of hot air and achieving energy conservation. In addition, the material turning component, driven by the servo motor 6, can turn the material on the surface of the drying disc when the rotating rod rotates, further promoting the uniformity of material heating and ensuring that all parts of the material are fully dried, significantly improving the drying effect and product quality. In summary, this disc dryer, with its efficient hot air guiding structure and material turning component, achieves efficient resource utilization and optimized drying effect.

[0027] Furthermore, such as Figure 2 and Figure 4 As shown, a diversion pipe 2 is fixedly connected to one side of multiple air inlet pipes 7 and one side of multiple air outlet pipes 3. A connecting flange is fixedly connected to the middle of one side of the diversion pipe 2. Multiple fixing rods 12 are fixedly connected to both sides of the outer wall of the first drying tray 8 and the second drying tray 9. One end of the fixing rod 12 is fixedly connected to the drying cylinder 1.

[0028] During operation, hot air enters the drying system through multiple air inlet pipes 7. Each air inlet pipe 7 is fixedly connected to a diverter pipe 2 on one side. These diverter pipes 2 are connected to other pipes or hot air sources through a connecting flange in the middle of one side, ensuring that the hot air can be evenly distributed to each air inlet pipe 7. The hot air then enters the first drying tray 8 and the second drying tray 9. After drying, the hot air is finally discharged from the drying system through multiple air outlet pipes 3. Similarly, each air outlet pipe 3 is also fixedly connected to a diverter pipe 2 on one side to collect and treat the exhaust gas in a unified manner. The outer walls of the first drying tray 8 and the second drying tray 9 are fixedly connected to the drying cylinder 1 by multiple fixing rods 12. This structure ensures the stability and durability of the drying trays during the drying process.

[0029] Furthermore, such as Figure 4 and Figure 5 As shown, the guide plate 16 is fixedly connected inside the first drying tray 8. The cross section of the guide plate 16 is in the shape of a torsion spring. A through hole 17 is provided on one side of the middle of the lower end face of the first drying tray 8 and the second drying tray 9. The end of the air outlet pipe 3 away from the split pipe 2 is fixedly connected to the first drying tray 8 and the second drying tray 9 and is connected to the first drying tray 8 and the second drying tray 9 through the through hole 17.

[0030] The guide plate 16 is cleverly designed with a torsion spring-shaped cross section and is fixedly connected to the inside of the first drying tray 8. This special-shaped guide plate 16 not only enhances the turbulence effect of hot air inside the first drying tray 8, but also ensures that the hot air flows through the drying tray in a more uniform and efficient manner, thereby improving the heat exchange efficiency. When the hot air enters the drying cylinder 1 through the air inlet pipe 7 and the split pipe 2, it will first come into contact with the first drying tray 8 and the second drying tray 9. Due to the torsion spring-shaped design of the guide plate 16, the hot air will be guided into a spiral or rotating flow when flowing through the drying tray. This flow mode helps the hot air to exchange heat more fully with the material on the drying tray. At the same time, through holes 17 are opened on one side of the lower end face of the first drying tray 8 and the second drying tray 9. These through holes 17 are connected to the air outlet pipe 3. After the hot air completes the heat exchange, it will enter the air outlet pipe 3 through the through holes 17 and finally be discharged from the drying system. This design not only ensures that the hot air can flow out of the drying tray smoothly, but also improves the continuity and efficiency of the entire drying process.

[0031] Furthermore, such as Figure 3 As shown, the material turning assembly includes a connecting seat 15 fixedly connected to the middle of one end face of the rake blade 11. One end of the connecting seat 15 is rotatably connected to a roller 13, and a plurality of protruding balls 14 are evenly spaced and fixedly connected to the outer wall of the roller 13.

[0032] When the servo motor 6 drives the rake arm 10 to rotate, the rake blade 11 also rotates accordingly. The connecting seat 15, which is fixedly connected to one side of the rake blade 11, drives the roller 13 to roll on the surface of the drying tray. The outer wall of the roller 13 is evenly distributed with convex balls 14. During the rolling process, these convex balls 14 come into contact with the material on the drying tray and generate a certain friction force, thereby effectively turning and stirring the material. As the rake blade 11 and the roller 13 continue to rotate, the material is constantly turned and mixed. This not only increases the contact area and contact time between the material and the hot air, but also ensures that the material can be heated evenly, avoiding the problems of local overheating or uneven drying. At the same time, the design of the convex balls 14 also increases the disturbance effect during the turning process, making the material looser and facilitating the penetration of hot air into the material layer, further improving the drying efficiency.

[0033] Furthermore, such as Figure 1 As shown, a feed pipe 5 is fixedly connected to one side of the middle of the upper end face of the drying cylinder 1. The feed pipe 5 is used for feeding and discharging the gas evaporated by heating the internal material. The lower end of the drying cylinder 1 is conical, and a discharge pipe 4 is fixedly connected to the middle of the lower end face of the drying cylinder 1.

[0034] First, the material is fed into the drying cylinder 1 through the feed pipe 5 located on one side of the upper end face. This feed pipe 5 not only adds material to the drying cylinder 1 but also has a discharge function, capable of discharging the gas evaporated during the heating process, ensuring gas exchange and stable material quality during the drying process. After drying, the moisture in the material is evaporated into gas and discharged through the feed pipe 5, while the dried material remains inside the drying cylinder 1. Because the lower end of the drying cylinder 1 is designed as a cone, the material naturally concentrates towards the discharge pipe 4 under the action of gravity. When the drying process is completed, the material is smoothly discharged from the drying cylinder 1 through the discharge pipe 4, thus completing the entire drying process.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0036] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A disc dryer, comprising a drying cylinder (1), the inside of the drying cylinder (1) is provided with a plurality of first drying discs (8) and second drying discs (9), the first drying discs (8) and the second drying discs (9) are staggered, the diameter size of the first drying discs (8) is smaller than that of the second drying discs (9) and the middle part is provided with holes for material flow, characterized in that: A plurality of air inlet pipes (7) are fixedly connected to one side of the drying cylinder (1), a plurality of air outlet pipes (3) are fixedly connected to the side of the drying cylinder (1) away from the air inlet pipes (7), the number of the air outlet pipes (3) and the air inlet pipes (7) is the same as the total number of the first drying disc (8) and the second drying disc (9), the number of the air outlet pipes (3) and the air inlet pipes (7) is four and they are respectively connected with the first drying disc (8) and the second drying disc (9), the first drying disc (8) and the second drying disc (9) are hollow structures, a guide plate (16) is fixedly connected to the inside of the first drying disc (8) and the second drying disc (9), the guide plate (16) is used for uniformly guiding the hot air entering the inside of the first drying disc (8) and the second drying disc (9), a servo motor (6) is arranged on the middle of the upper end surface of the drying cylinder (1), the output end of the servo motor (6) extends into the inside of the drying cylinder (1) and is fixedly connected with a rake arm (10), a cross (19) is fixedly connected to the upper end of the outer wall of the rake arm (10) on the first drying disc (8) and the second drying disc (9), a plurality of connecting columns (18) are fixedly connected to the lower end of the cross (19), a plurality of rake leaves (11) are fixedly connected to the lower end of the connecting columns (18) and are used for pushing the material to move and fall from top to bottom, a material turning assembly is arranged on one side of the rake leaf (11), and the material turning assembly is used for turning the material on the surface of the first drying disc (8) and the second drying disc (9).

2. A disc dryer according to claim 1, characterised in that: A plurality of the air inlet pipes (7) and a plurality of the air outlet pipes (3) are fixedly connected with a flow divider (2) on one side, and the flow divider (2) is fixedly connected with a connecting flange on the middle of one side.

3. A disc dryer according to claim 2, characterised in that: A plurality of fixed rods (12) are fixedly connected to the outer wall of the first drying disc (8) and the second drying disc (9) on both sides, and one end of the fixed rod (12) is fixedly connected with the drying cylinder (1).

4. A disc dryer according to claim 3, characterised in that: The guide plate (16) is fixedly connected in the inside of the first drying disc (8), the cross section of the guide plate (16) is a torsion spring shape, a through hole (17) is arranged on the middle of one side of the lower end surface of the first drying disc (8) and the second drying disc (9), and one end of the air outlet pipe (3) away from the flow divider (2) is fixedly connected with the first drying disc (8) and the second drying disc (9) and is connected with the first drying disc (8) and the second drying disc (9) through the through hole (17).

5. A disc dryer according to claim 4, characterised in that: The material turning assembly comprises a connecting seat (15) fixedly connected to the middle of the end surface of one side of the rake leaf (11), a roller (13) is rotatably connected to one end of the connecting seat (15), and a plurality of convex balls (14) are uniformly and interval fixedly connected to the outer wall of the roller (13).

6. A disc dryer according to claim 5, characterised in that: A feeding pipe (5) is fixedly connected to the middle of one side of the upper end surface of the drying cylinder (1), and the feeding pipe (5) is used for feeding and discharging the gas evaporated by heating the internal material.

7. A disc dryer according to claim 6, characterised in that: The lower end of the drying cylinder (1) is conical, and a discharging pipe (4) is fixedly connected to the middle of the lower end surface of the drying cylinder (1).

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