Sectional type drying device for colored pencil lead

Abstract

The utility model provides a colored pencil lead sectional type drying device which comprises a drying box, box doors are hinged to the front side and the rear side of the drying box respectively, a hot air box is arranged in the center of the top of the drying box, an air heater is arranged in the center of the top of the hot air box, and the air outlet end of the bottom of the air heater penetrates into the hot air box. Compared with the prior art, the color pencil lead drying device has the following beneficial effects that hot air flow can flow in multiple directions in the drying box through the air conveying assembly, so that flowing dead angles of hot air in the drying box are avoided, color pencil leads can be uniformly heated, the drying action of the color pencil leads can not be completed at one time, and the drying efficiency is improved. The whole drying action of the colored pencil lead needs to be completed through multiple times of drying, the colored pencil lead is sequentially placed on the three material containing net frames from bottom to top so that the colored pencil lead can be dried in the gradually-heightened drying environment, and then the drying actions of preheating, moderate heating and high heating of the colored pencil lead are achieved.

Description

Technical Field

[0001] This utility model is a segmented drying device for colored lead cores, belonging to the field of pencil processing equipment. Background Technology

[0002] Colored lead, the core component of colored pencils, determines the color and writing effect. Primarily used for drawing and writing, colored lead is a composite material made from a mixture of various materials. The main components include graphite, clay, and pigment. Graphite provides good writing quality and a certain depth of black, clay is used to adjust hardness and viscosity, and pigment is responsible for giving the colored lead its various vibrant colors.

[0003] However, during the production of colored lead cores, the formed colored lead cores contain a certain amount of moisture and need to be dehydrated and dried to ensure the quality of the colored lead cores. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a segmented drying device for colored lead cores.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A segmented drying device for colored lead cores includes a drying box with a door hinged to its front and rear sides. A hot air box is located at the center of the top of the drying box, and a hot air blower is located at the center of the top of the hot air box. The bottom air outlet of the hot air blower extends into the interior of the hot air box. The bottom of the hot air box is connected to the top of the drying box through several connecting holes. An air conveying assembly connected to the hot air box is located in the middle of the drying box. A material feeding assembly is connected to the inner wall of the drying box through a fixing rod.

[0007] Furthermore, the air supply assembly includes an inner cavity formed at the bottom of the drying chamber. A motor is provided on one side of the bottom of the inner cavity. A drive gear is connected to the top output end of the motor. A rotating cylinder is rotatably connected at the center of the bottom of the drying chamber. The rotating cylinder has a cavity inside. The bottom end of the rotating cylinder passes through the inner cavity and is connected and fixed to an outer gear ring. The outer gear ring meshes with the drive gear.

[0008] Furthermore, a fixed shaft is fixed to the bottom of one side of the inner cavity. The fixed shaft is coaxial with the rotating cylinder. The top end of the fixed shaft extends movably into the cavity. Several fixed bevel gears are fixed to the outer surface of one end of the fixed shaft inside the cavity. Several rotating shafts are rotatably connected to the inner wall of the cavity. A side bevel gear is fixed to one end of each rotating shaft. The side bevel gear meshes with the fixed bevel gear. A rotating groove that mates with the rotating shaft is opened in the inner wall of the rotating cylinder. A rotating block is rotatably connected inside the rotating groove. The end of the rotating shaft rotatably extends into the rotating groove and is fixed to one side of the rotating block. An air supply pipe is connected to the other side of the rotating block. The end of the air supply pipe extends to the outside of the rotating cylinder and communicates with several air outlets. Several through holes communicating with the rotating groove are opened on the outer circumference of the rotating block.

[0009] Furthermore, the top of the rotating cylinder extends into the interior of the drying chamber, and an air supply groove is provided at the center of the top of the rotating cylinder. An air supply channel is provided on each side of the bottom of the air supply groove, and the air supply channel is connected to several rotating grooves.

[0010] Furthermore, the feeding assembly includes a feeding tray, which is connected and fixed to the fixing rod. The bottom of the feeding tray has an air hole, and a feeding mesh frame is placed inside the feeding tray.

[0011] Furthermore, the bottom of the material feeding frame is fixed with several support legs, and the bottom of the support legs is pressed together with the inner bottom of the material tray.

[0012] Furthermore, the top of the material placement frame is evenly provided with several protrusions, and colored lead cores are placed on the top of the material placement frame and stacked on the protrusions.

[0013] Furthermore, the inner wall of the drying chamber is provided with several air guide rings that cooperate with the material feeding assembly.

[0014] The beneficial effects of this utility model are:

[0015] Through the design of the air delivery assembly, the motor drives the external gear ring to rotate via a drive gear. Simultaneously, the rotation of the external gear ring drives the rotating cylinder to rotate horizontally. The rotation of the rotating cylinder drives several internal side bevel gears to rotate horizontally. These side bevel gears, while rotating horizontally, travel on fixed bevel gears, thus achieving vertical rotation. The rotation of the side bevel gears also drives the rotating shaft to rotate, which in turn drives a rotating block to rotate within a rotating groove. Simultaneously, the rotation of the rotating block drives the air delivery duct and the air outlet to rotate vertically. This results in the air delivery duct and the air outlet rotating horizontally under the influence of the rotating cylinder while simultaneously rotating vertically around the rotating cylinder as a fulcrum. At the same time, the hot air blower outputs hot airflow. Inside the hot air box, a portion of the hot air flows through several connecting holes to the bottom of the drying chamber, and then flows from top to bottom through several material placement frames to form a graded and segmented drying action. At the same time, another portion of the hot air inside the hot air box is guided by the air delivery duct into two air delivery channels. The hot air in the air delivery channels flows into several rotating slots, and the hot air in the rotating slots flows through several through holes into rotating blocks. Then, it flows through the rotating blocks into the air supply pipe and the air outlet for air discharge. This allows the hot air to flow horizontally and vertically at the top of the material placement frame, thereby achieving air delivery to the material placement frame below and the material tray above.

[0016] The design of the feeding assembly provides a support mesh surface for the colored lead cores, allowing airflow and enabling the colored lead cores to fully contact the flowing hot air for drying.

[0017] The design of the support legs creates an airflow space between the material rack and the tray, allowing the hot airflow passing through the material rack to flow within this space and uniformly dry the colored lead cores on top of the material rack.

[0018] The protrusion design ensures that when colored lead is placed on the material placement frame, it will not block the mesh holes of the frame, allowing airflow to pass through the frame and into the air circulation space.

[0019] The design of the air guide ring allows the hot airflow that impacts the inner wall of the drying chamber from the material tray to flow inside the drying chamber under the action of the air guide ring, thus enabling the hot air to circulate inside the drying chamber and avoiding dead zones in airflow. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a segmented drying device for colored lead cores according to this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of a segmented drying device for colored lead cores according to this utility model;

[0023] Figure 3 This is a partial internal structure diagram of a segmented drying device for colored lead cores according to this utility model;

[0024] Figure 4 This is an enlarged schematic diagram of point A of the segmented drying device for colored lead cores according to this utility model;

[0025] Figure 5 This is a schematic diagram of the connection structure between the material tray and the material placement frame of a segmented drying device for colored lead cores according to this utility model;

[0026] Figure 6 This is a schematic diagram of the material tray structure of a segmented drying device for colored lead cores according to this utility model;

[0027] Figure 7 This is a schematic diagram of the material feeding frame structure of a segmented drying device for colored lead cores according to this utility model.

[0028] In the diagram, 1. Drying oven; 2. Door; 3. Hot air box; 4. Hot air blower; 5. Inner cavity; 6. Motor; 7. Drive gear; 8. Rotating cylinder; 9. External gear ring; 10. Fixed shaft; 11. Fixed bevel gear; 12. Rotating shaft; 13. Side bevel gear; 14. Rotating groove; 15. Rotating block; 16. Through hole; 17. Air duct; 18. Air outlet; 19. Air supply channel; 20. Air supply slot; 21. Fixed rod; 22. Material tray; 23. Air hole; 24. Material placement frame; 25. Support leg; 26. Protrusion; 27. Air guide ring; 28. Cavity. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-7 This utility model provides a technical solution for a segmented drying device for colored lead cores, including a drying box 1. A door 2 is hinged to the front and rear sides of the drying box 1. A hot air box 3 is located at the center of the top of the drying box 1, and a hot air blower 4 is located at the center of the top of the hot air box 3. The bottom outlet of the hot air blower 4 extends into the interior of the hot air box 3. The bottom of the hot air box 3 is connected to the top of the drying box 1 through several connecting holes. An air conveying assembly connected to the hot air box 3 is located in the middle of the interior of the drying box 1. A material dispensing assembly is connected to the inner wall of the drying box 1 through a fixing rod 21. Several moisture-absorbing blocks are provided on the inner walls of both the drying box 1 and the hot air box 3. The moisture-absorbing blocks consist of a mesh cloth and a layer of quicklime. When humid air flows onto the moisture-absorbing blocks, the water in the air reacts with the quicklime to generate calcium hydroxide, releasing heat. This heat can further remove moisture from the air. The moisture-absorbing blocks can also be composed of calcium chloride and activated carbon particles.

[0031] See Figures 2-4The air supply assembly includes an inner cavity 5 formed at the bottom of the drying chamber 1. A motor 6 is located on one side of the bottom of the inner cavity 5. A drive gear 7 is connected to the top output end of the motor 6. A rotating cylinder 8 is rotatably connected to the center of the bottom of the drying chamber 1. The rotating cylinder 8 has a cavity 28 inside. The bottom end of the rotating cylinder 8 extends into the inner cavity 5 and is fixedly connected to an external gear ring 9. The external gear ring 9 meshes with the drive gear 7. A fixed shaft 10 is fixed to the bottom of one side of the inner cavity 5. The fixed shaft 10 is coaxial with the rotating cylinder 8. The top end of the fixed shaft 10 extends movably into the cavity 28. Several fixed bevel gears 11 are fixed to the outer surface of one end of the fixed shaft 10 inside the cavity 28. Several rotating shafts 12 are rotatably connected to the inner wall of the cavity 28. A side bevel gear 13 is fixed to one end of each rotating shaft 12. The side bevel gear 13 meshes with the fixed bevel gear 11. A rotating groove 14 that cooperates with the rotating shaft 12 is provided in the inner wall of the rotating cylinder 8. A rotating block 15 is rotatably connected inside the rotating groove 14. The end of the rotating shaft 12 rotatably passes through the rotating groove 14 and is fixedly connected to one side of the rotating block 15. An air supply pipe 17 is connected to the other side of the rotating block 15. The end of the air supply pipe 17 passes through the outside of the rotating cylinder 8 and communicates with several air outlets 18. Several through holes 16 that communicate with the rotating groove 14 are provided on the outer circumference of the rotating block 15. The top of the rotating cylinder 8 passes through the inside of the drying oven 1. An air supply groove 20 is provided at the center of the top of the rotating cylinder 8. An air supply channel 19 is provided on both sides of the bottom of the air supply groove 20. The air supply channel 19 communicates with several rotating grooves 14.Through the design of the air delivery assembly, the motor 6 drives the external gear ring 9 to rotate via the drive gear 7. Simultaneously, the rotation of the external gear ring 9 drives the rotating cylinder 8 to rotate horizontally. The rotation of the rotating cylinder 8 drives several internal side bevel gears 13 to rotate horizontally. While rotating horizontally, the side bevel gears 13 travel on the fixed bevel gear 11, thus achieving vertical rotation. Simultaneously, the rotation of the side bevel gears 13 drives the rotating shaft 12 to rotate. The rotation of the rotating shaft 12 drives the rotating block 15 to rotate within the rotating groove 14. Simultaneously, the rotation of the rotating block 15 drives the air delivery pipe 17 and the air outlet 18 to rotate vertically. This results in the air delivery pipe 17 and the air outlet 18 rotating horizontally under the drive of the rotating cylinder 8 while simultaneously rotating vertically with the rotating cylinder 8 as a fulcrum. At the same time, the hot air blower 4 outputs hot air into the hot air box 3. A portion of the hot air flows through several connecting holes to the bottom of the drying chamber 1, and flows from top to bottom within the drying chamber 1, passing sequentially through several material placement frames 24 to form a graded and segmented drying action. Meanwhile, another portion of the hot air flow inside the hot air box 3 is guided by the air delivery slot 20 into the two air delivery channels 19. The hot air flow in the air delivery channels 19 flows into several rotating slots 14, and the hot air flow in the rotating slots 14 flows through several through holes 16 into the rotating block 15. Then, it flows through the rotating block 15 into the air supply pipe 17 and the air outlet 18 for air discharge. This allows the hot air flow to move horizontally and vertically at the top of the material placement frame 24, thereby achieving airflow to the area below. The material feeding frame 24 and the upper material tray 22 are equipped with air supply. The drying process of the colored lead cores is not completed in one go but requires multiple drying cycles. Simultaneously, the drying capacity of the three material feeding frames 24 decreases from top to bottom. Each time drying is performed, the colored lead cores from the lower material feeding frame 24 are placed onto the upper material feeding frame 24. Through multiple drying cycles, the overall drying process of the colored lead cores is completed, and the temperature of the colored lead cores gradually increases, achieving preheating, medium-heat, and high-heat drying processes.

[0032] See Figures 5-7 The feeding assembly includes a material tray 22, which is connected and fixed to the fixing rod 21. The bottom of the material tray 22 is provided with an air hole 23, and a material feeding mesh frame 24 is placed inside the material tray 22. Through the design of the feeding assembly, a support mesh surface that allows air to circulate can be provided for the colored lead core, so that the colored lead core can fully contact the flowing hot air to achieve the drying work.

[0033] See Figure 7The bottom of the material placement frame 24 is fixed with several support legs 25, and the bottom of the support legs 25 is pressed together with the inner bottom of the material tray 22. Through the design of the support legs 25, an air circulation space is formed between the material placement frame 24 and the material tray 22, so that the hot airflow passing through the material placement frame 24 can circulate in this airflow space, thereby uniformly drying the colored lead cores on the top of the material placement frame 24.

[0034] See Figure 7 The top of the material placement mesh frame 24 is evenly provided with several protrusions 26. Colored lead cores are placed on the top of the material placement mesh frame 24 and stacked on the protrusions 26. Through the design of the protrusions 26, when the colored lead cores are placed on the material placement mesh frame 24, the colored lead cores will not block the mesh holes of the material placement mesh frame 24, thereby allowing airflow to flow through the material placement mesh frame 24 into the air circulation space.

[0035] See Figure 3 The inner wall of the drying chamber 1 is provided with several air guide rings 27 that cooperate with the feeding assembly. Through the design of the air guide rings 27, the hot airflow that flows from the material tray 22 and impacts the inner wall of the drying chamber 1 can flow inside the drying chamber 1 under the action of the air guide rings 27, so that the hot air can flow inside the drying chamber 1 and avoid dead corners in airflow.

[0036] In use, the colored lead cores are placed on the protrusions 26 on the material storage frame 24. Then, the hot air blower 4 and the motor 6 are started. The motor 6 drives the external gear ring 9 to rotate via the drive gear 7. The rotation of the external gear ring 9 drives the rotating cylinder 8 to rotate horizontally. The rotation of the rotating cylinder 8 drives several side bevel gears 13 inside to rotate horizontally. While the side bevel gears 13 rotate horizontally, they also travel on the fixed bevel gear 11, thus achieving the vertical rotation of the side bevel gears 13. The rotation of the side bevel gears 13 drives the rotating shaft 12 to rotate. The rotation of the rotating shaft 12 causes the rotating block 15 to rotate within the rotating groove 14. Simultaneously, the rotating block 15 rotates, causing the air duct 17 and the air outlet 18 to rotate vertically. This results in the air duct 17 and the air outlet 18 rotating horizontally under the influence of the rotating cylinder 8 while simultaneously rotating vertically around the rotating cylinder 8 as a fulcrum. At the same time, the hot air blower 4 outputs hot air into the hot air box 3. A portion of the hot air flows through several connecting holes to the bottom of the drying chamber 1, and then flows from top to bottom through several material placement holes within the drying chamber 1. The mesh frame 24 forms a graded and segmented drying action. At the same time, another part of the hot air flow inside the hot air box 3 enters the two air supply channels 19 under the guidance of the air supply trough 20. The hot air flow in the air supply channels 19 flows into several rotating troughs 14. The hot air flow in the rotating troughs 14 flows into the rotating block 15 through several through holes 16, and then flows into the air conveying pipe 17 and the air outlet 18 through the rotating block 15 for air discharge. This allows the hot air flow to move horizontally and vertically on the top of the material feeding mesh frame 24. This allows for air supply to the lower material rack 24 and the upper material tray 22. The drying of colored lead cores cannot be completed in one go and requires multiple drying cycles. Meanwhile, the drying capacity of the three material racks 24 decreases from top to bottom. Each time the material is dried, the colored lead cores on the lower material rack 24 are placed on the upper material rack 24. The overall drying of the colored lead cores is completed through multiple drying cycles. The temperature of the colored lead cores is gradually increased during the drying process, achieving the preheating, medium-heat, and high-heat drying of the colored lead cores.

[0037] As hot air flows from top to bottom, it impacts the material tray 22 and the material rack 24. While the hot air impacts the colored lead cores, some airflow passes through the material rack 24 and flows into the air circulation space formed between the material rack 24 and the material tray 22. This allows the hot airflow passing through the material rack 24 to circulate in this airflow space, thus uniformly drying the colored lead cores on the top of the material rack 24. The hot air passing through the material tray 22 flows into the drying chamber 1. The hot airflow impacting the inner wall of the drying chamber 1 can flow inside the drying chamber 1 under the action of the air guide ring 27, thus allowing the hot air to circulate inside the drying chamber 1 and avoiding dead zones in airflow. At the same time, the flowing hot air carries the moisture generated during drying. During the flow, the moisture is absorbed by the moisture-absorbing blocks on the inner wall of the drying chamber 1.

[0038] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A segmented drying device for colored lead cores, characterized in that, The equipment includes a drying box (1), with a door (2) hinged to the front and rear sides of the drying box (1). A hot air box (3) is provided at the top center of the drying box (1), and a hot air blower (4) is provided at the top center of the hot air box (3). The bottom air outlet of the hot air blower (4) extends into the interior of the hot air box (3). The bottom of the hot air box (3) is connected to the top of the drying box (1) through several connecting holes. An air conveying assembly connected to the hot air box (3) is provided in the middle of the drying box (1). The inner wall of the drying box (1) is connected to the material feeding assembly through a fixing rod (21).

2. The segmented drying device for colored lead cores according to claim 1, characterized in that, The air supply assembly includes an inner cavity (5) opened at the bottom of the drying box (1). A motor (6) is provided on one side of the bottom of the inner cavity (5). The top output end of the motor (6) is connected to a drive gear (7). A rotating cylinder (8) is rotatably connected at the center of the bottom of the drying box (1). The rotating cylinder (8) has a cavity (28) inside. The bottom end of the rotating cylinder (8) passes through the inner cavity (5) and is connected and fixed to an external gear ring (9). The external gear ring (9) meshes with the drive gear (7).

3. The segmented drying device for colored lead cores according to claim 2, characterized in that, A fixed shaft (10) is fixed to the bottom of one side of the inner cavity (5). The fixed shaft (10) is coaxial with the rotating cylinder (8). The top end of the fixed shaft (10) extends movably into the cavity (28). Several fixed bevel gears (11) are fixed to the outer surface of one end of the fixed shaft (10) inside the cavity (28). Several rotating shafts (12) are rotatably connected to the inner wall of the cavity (28). A side bevel gear (13) is fixed to one end of the rotating shaft (12). The side bevel gear (13) meshes with the fixed bevel gear (11). The rotating cylinder (8) has a rotating groove (14) that cooperates with the rotating shaft (12) in its inner wall. A rotating block (15) is rotatably connected inside the rotating groove (14). The end of the rotating shaft (12) rotates through the rotating groove (14) and is connected and fixed to one side of the rotating block (15). The other side of the rotating block (15) is connected to an air supply pipe (17). The end of the air supply pipe (17) passes through the outside of the rotating cylinder (8) and is connected to several air outlets (18). Several through holes (16) that communicate with the rotating groove (14) are opened on the outer circumference of the rotating block (15).

4. The segmented drying device for colored lead cores according to claim 3, characterized in that, The top of the rotating cylinder (8) extends into the interior of the drying box (1). An air supply groove (20) is provided at the center of the top of the rotating cylinder (8). An air supply channel (19) is provided on each side of the bottom of the air supply groove (20). The air supply channel (19) is connected to several rotating grooves (14).

5. A segmented drying device for colored lead cores according to claim 4, characterized in that, The feeding assembly includes a feeding tray (22), which is connected and fixed to the fixing rod (21). The bottom of the feeding tray (22) is provided with a vent (23), and a feeding mesh frame (24) is placed inside the feeding tray (22).

6. A segmented drying device for colored lead cores according to claim 5, characterized in that, The bottom of the material feeding frame (24) is fixed with several support legs (25), and the bottom of the support legs (25) is pressed together with the inner bottom of the material tray (22).

7. A segmented drying device for colored lead cores according to claim 5, characterized in that, The top of the material placement frame (24) is evenly provided with several protrusions (26), and colored lead cores are placed on the top of the material placement frame (24) and piled on the protrusions (26).

8. The segmented drying device for colored lead cores according to claim 1, characterized in that, The inner wall of the drying box (1) is provided with several air guide rings (27) that cooperate with the feeding assembly.

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