A drum drying device

Abstract

This utility model discloses a roller drying device, comprising: a roller assembly, the roller assembly including a fixed outer cylinder and a rolling inner cylinder, the rolling inner cylinder being sleeved in the fixed outer cylinder with its two ends extending outwards from both ends of the fixed outer cylinder, and an annular gap existing between the fixed outer cylinder and the rolling inner cylinder; a left support base, which is a hollow box structure with a round hole on one side for the end of the rolling inner cylinder to pass through, a motor for driving the rotation of the rolling inner cylinder is provided inside the left support base, and a feeding groove and an air inlet pipe are also provided on one side of the left support base, the feeding groove extending into the rolling inner cylinder, and the air inlet pipe located inside the port of the rolling inner cylinder; and a right support base, which is also a hollow box structure with a round hole on one side for the other end of the rolling inner cylinder to pass through, and a discharge port is provided at the bottom of the right support base; this utility model can dry the wire through three methods: heat transfer, convection heat transfer, and heat radiation, thereby significantly improving the drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, specifically to a drum drying device. Background Technology

[0002] Drum drying is a crucial step in cigarette manufacturing, primarily serving several purposes: drying tobacco shreds to the moisture content required for cigarette production; further loosening and curling the tobacco shreds to improve filling capacity; removing some of the unpleasant odors during the drying process, revealing the aroma and enhancing tobacco quality; and ensuring a more uniform mixing of different ingredients in the tobacco. Therefore, drum drying equipment is a key factor in determining the quality of cigarette manufacturing. Existing drying devices suffer from a single heat source, resulting in low drying efficiency. For example, utility model publication CN212911646U describes a drum drying device comprising: a cylinder, a spiral tube, a frame, a feed inlet, a discharge outlet, front and rear end caps of the spiral tube, a hot air inlet pipe, a hot air outlet pipe, and a rotary joint; the cylinder is fixed to the frame, and a spiral tube is installed inside the cylinder, with a hot air inlet connected to the front end and a hot air outlet connected to the rear end; a feed inlet is located above the front end of the cylinder to allow material to enter. In this device, only hot air is used to dry the tobacco. The hot air often only acts on the upper layer of the tobacco, especially when there is a large amount of tobacco. Even though the drum rotates and tumbles the tobacco, the short contact time between the hot air and the upper layer of tobacco makes it difficult to quickly remove moisture, resulting in low drying efficiency. To address this, this invention provides a drum drying device. Summary of the Invention

[0003] The purpose of this invention is to provide a drum drying device that can dry wires through three methods: heat transfer, convection heat transfer, and heat radiation, thereby significantly improving the drying efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A drum drying device for yarn, comprising: A roller assembly, comprising a fixed outer cylinder and a rolling inner cylinder, wherein the rolling inner cylinder is sleeved within the fixed outer cylinder and its two ends extend outward from the two ends of the fixed outer cylinder, and an annular gap exists between the fixed outer cylinder and the rolling inner cylinder. The left support base is a hollow box structure with a round hole on one side for the end of the rolling inner cylinder to pass through. The left support base is equipped with a motor for driving the rotation of the rolling inner cylinder. A feed trough and an air inlet pipe are also provided on one side of the left support base. The feed trough extends into the rolling inner cylinder, and the air inlet pipe is located inside the port of the rolling inner cylinder. The right support base is also a hollow box structure with a round hole on one side for the other end of the rolling inner cylinder to pass through. A discharge port is provided at the bottom of the right support base. An electromagnetic heating tube and a microwave generator are provided in the right support base. The electromagnetic heating tube is located in the annular gap between the fixed outer cylinder and the rolling inner cylinder. The microwave generator extends into the rolling inner cylinder. A temperature and humidity sensor is provided on the right support base. An exhaust pipe is also provided above the right support base, and an air valve is provided on the exhaust pipe. The fixed outer cylinder is fixedly installed between the circular holes of the left support and the right support, and the rolling inner cylinder is rotatably installed in the fixed outer cylinder.

[0005] Furthermore, it also includes a support frame and a discharge conveying device. Side columns are provided on both sides of the support frame, and the fixed outer cylinder is rotatably disposed between the two side columns. The discharge conveying device is located at the tail of the support frame and directly below the right support seat.

[0006] Furthermore, a hydraulic cylinder is rotatably mounted on the bracket, and the extension end of the hydraulic cylinder is rotatably connected to the bottom of the left support seat. In the initial state, the left support seat is vertically mounted on the bracket.

[0007] Furthermore, the output end of the motor is provided with a driving gear, and a driven gear ring is provided on the outer circumferential surface of the rolling inner cylinder, with the driving gear and the driven gear ring meshing.

[0008] Furthermore, both the left and right support seats are provided with at least three support rollers, which are located on the outer periphery of the rolling inner cylinder.

[0009] Furthermore, a cylinder is provided on the outer side of the right support base, and a roller cover is provided on the cylinder's push-out end. The roller cover is located on the inner side of the right support base and corresponds to the port of the rolling inner cylinder. A guide rod is also provided on the inner side of the right support base. The roller cover is provided with multiple through holes, allowing the microwave generator, the guide rod, and the temperature and humidity sensor to pass through the through holes respectively.

[0010] Furthermore, the inner wall of the rolling inner cylinder is provided with a spiral plate, which is arranged along the circumference of the rolling inner cylinder.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention features an air inlet pipe on the left support to allow hot airflow to be introduced into the rolling inner cylinder for tobacco drying. A cylinder-connected roller cover plate on the other side of the rolling inner cylinder seals the port, preventing a large amount of hot airflow from escaping from the discharge port. An electromagnetic heating tube and a microwave generator are also installed on the right support. The microwave generator extends into the rolling inner cylinder to microwave heat the tobacco, while the electromagnetic heating tube extends into the annular gap between the fixed outer cylinder and the rolling inner cylinder to electromagnetically heat the tobacco. This allows the device to dry the tobacco through the combined effects of heat transfer, convection, and thermal radiation, significantly improving its drying efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is another side view of the present invention.

[0014] Figure 3 This is a diagram showing the disassembly of the left support.

[0015] Figure 4 This is a diagram showing the disassembly of the right support.

[0016] Figure 5 This is a schematic diagram of the internal structure of the right support.

[0017] In the diagram, 1-roller assembly, 2-left support seat, 21-motor, 22-air inlet pipe, 23-feed trough, 3-right support seat, 31-discharge port, 32-electromagnetic heating tube, 33-microwave generator, 34-temperature and humidity sensor, 35-exhaust pipe, 36-air valve, 4-bracket, 5-discharge conveying device, 6-side column, 7-hydraulic cylinder, 8-support roller, 9-cylinder, 10-roller cover plate, 11-fixed outer cylinder, 12-rolling inner cylinder, 121-driven gear ring, 122-spiral plate, 13-guide rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Please see Figure 1-5 As shown, this utility model provides a drum drying device for filaments, comprising: Roller assembly 1, the roller assembly 1 includes a fixed outer cylinder 11 and a rolling inner cylinder 12, the rolling inner cylinder 12 is sleeved in the fixed outer cylinder 11 and the two ends of the rolling inner cylinder 12 extend outward from the two ends of the fixed outer cylinder 11, there is an annular gap between the fixed outer cylinder 11 and the rolling inner cylinder 12, preferably, the rolling inner cylinder 12 is made of stainless steel, and a ceramic fiber heat insulation layer is added to the outer wall of the fixed outer cylinder 11; The left support 2 is a hollow box structure with a round hole on one side for the end of the rolling inner cylinder 12 to pass through. The left support 2 is equipped with a motor 21 for driving the rotation of the rolling inner cylinder 12. A feeding groove 23 and an air inlet pipe 22 are also provided on one side of the left support 2. The feeding groove 23 extends into the rolling inner cylinder 12 to facilitate the addition of tobacco into the rolling inner cylinder 12. The air inlet pipe 22 is located inside the port of the rolling inner cylinder 12 and is connected to a hot air source to provide hot airflow into the rolling inner cylinder 12 for drying the tobacco. The right support 3 is also a hollow box structure with a round hole on one side for the other end of the rolling inner cylinder 12 to pass through. A discharge port 31 is located at the bottom of the right support 3. After the tobacco is dried, it is discharged from the discharge port 31. An electromagnetic heating tube 32 and a microwave generator 33 are installed in the right support 3. The electromagnetic heating tube 32 is located in the annular gap between the fixed outer cylinder 11 and the rolling inner cylinder 12, and it does not contact the side walls of the fixed outer cylinder 11 and the rolling inner cylinder 12. Heat is generated by the electromagnetic heating tube 32 and transferred to the rolling inner cylinder. On the upper part of the 12, the microwave generator 33 extends into the inner rolling cylinder 12 and is located above the inside of the inner rolling cylinder 12. The microwave generator 33 emits heat radiation to dry the tobacco. The right support 3 is equipped with a temperature and humidity sensor 34 to monitor the temperature of the inner rolling cylinder 12 and the humidity of the hot air flow during the drying process. This allows for the adjustment of the heating power of the electromagnetic heating tube 32 and the microwave generator 33. An exhaust pipe 35 is also provided above the right support 3, and an air valve 36 is provided on the exhaust pipe 35 to discharge the hot air flow. The fixed outer cylinder 11 is fixedly disposed between the circular holes of the left support seat 2 and the right support seat 3, so that the fixed outer cylinder 11, the left support seat 2 and the right support seat 3 form a whole, and the rolling inner cylinder 12 is rotated in the fixed outer cylinder 11.

[0022] The device also includes a support 4 and a discharge conveying device 5. Side columns 6 are provided on both sides of the support 4. The fixed outer cylinder 11 is rotatably disposed between the two side columns 6, so that the fixed outer cylinder 11 can be tilted to facilitate discharge. The discharge conveying device 5 is located at the tail of the support 4 and directly below the right support 3, so that the tobacco discharged from the discharge port 31 at the bottom of the right support 3 can fall directly onto the discharge conveying device 5.

[0023] To achieve inclined discharge of the fixed outer cylinder 11, a hydraulic cylinder 7 is rotatably mounted on the support 4. The extension end of the hydraulic cylinder 7 is rotatably connected to the bottom of the left support seat 2. In the initial state, the left support seat 2 is vertically mounted on the support 4. When the hydraulic cylinder 7 is extended, the fixed outer cylinder 11 is tilted by 10-20°. In addition, a spiral plate 122 is provided on the inner wall of the rolling inner cylinder 12. The spiral plate 122 is arranged along the circumference of the rolling inner cylinder 12. During discharge, the rolling inner cylinder 12 rotates, and the tobacco is discharged to the port through the action of the spiral plate 122.

[0024] In order for the motor 21 to drive the rolling inner cylinder 12 to rotate, the output end of the motor 21 is provided with a drive gear 24, and a driven gear ring 121 is provided on the outer circumferential surface of the rolling inner cylinder 12. The drive gear 24 and the driven gear ring 121 mesh with each other, thereby transmitting the rotational power to the rolling inner cylinder 12 to make it rotate.

[0025] In order to support the rolling inner cylinder 12 without hindering its rotation, at least three support rollers 8 are provided in both the left support seat 2 and the right support seat 3. The support rollers 8 are rotatable and are located on the outer periphery of the rolling inner cylinder 12.

[0026] In some embodiments, a cylinder 9 is provided on the outer side of the right support 3, and a roller cover 10 is provided on the extension end of the cylinder 9. The roller cover 10 is located on the inner side of the right support 3 and corresponds to the port of the rolling inner cylinder 12. The diameter of the roller cover 10 needs to be larger than the diameter of the port of the rolling inner cylinder 12 so that the roller cover 10 can cover the port of the rolling inner cylinder 12. In the initial state, the roller cover 10 is disengaged from the port of the rolling inner cylinder 12, and the port of the rolling inner cylinder 12 is open to facilitate material discharge. When the cylinder 9 is extended, the roller cover 10 covers the port of the rolling inner cylinder 12, thereby preventing large... To facilitate the escape of the hot airflow, a guide rod 13 is also provided inside the right support 3. The roller cover plate 10 is provided with multiple through holes, through which the microwave generator 33, the guide rod 13, and the temperature and humidity sensor 34 pass respectively. The guide rod 13 prevents the roller cover plate 10 from rotating. It should be noted that when the roller cover plate 10 is placed over the port of the rolling inner cylinder 12, the hot airflow is discharged from the through hole corresponding to the temperature and humidity sensor 34. Since the hot airflow will carry away the moisture in the tobacco during the drying process, the temperature and humidity sensor 34 is used to detect the drying temperature and the humidity of the discharged moisture when the hot airflow containing moisture is discharged.

[0027] It also includes a controller configured to: control the starting and speed adjustment of motor 21, the starting of hydraulic cylinder 7, the starting of cylinder 9, the starting of air valve 36, the starting and power control of electromagnetic heating tube 32 and microwave generator 33, and receive temperature and humidity data transmitted by temperature and humidity sensor 34.

[0028] The working process of this utility model is as follows: tobacco shreds enter the rolling inner cylinder 12 from the feeding trough 23. The air inlet pipe 22 is connected to the heat source to blow hot air into the rolling inner cylinder 12 to dry the shreds. During the drying process, the electromagnetic heating tube 32 and the microwave generator 33 can also be turned on, so that the tobacco shreds are dried by heat transfer, convection heat transfer and heat radiation. During the drying process, the cylinder 9 extends to cover the port of the rolling inner cylinder 12 with the roller cover plate 10 to prevent a large amount of hot air from escaping. After the drying is completed, the roller cover plate 10 retracts, the port of the rolling inner cylinder 12 is opened, the hydraulic cylinder 7 is activated to tilt the fixed outer cylinder 11, and the tobacco shreds are discharged from the discharge port 31 and fall into the discharge conveying device 5.

[0029] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A drum drying device for filaments, characterized in that, include: Roller assembly (1), the roller assembly (1) includes a fixed outer cylinder (11) and a rolling inner cylinder (12), the rolling inner cylinder (12) is sleeved in the fixed outer cylinder (11) and the two ends of the rolling inner cylinder (12) extend outward from the two ends of the fixed outer cylinder (11), and there is an annular gap between the fixed outer cylinder (11) and the rolling inner cylinder (12); The left support base (2) is a hollow box structure with a round hole on one side for the end of the rolling inner cylinder (12) to pass through. The left support base (2) is equipped with a motor (21) for driving the rolling inner cylinder (12) to rotate. A feed groove (23) and an air inlet pipe (22) are also provided on one side of the left support base (2). The feed groove (23) extends into the rolling inner cylinder (12), and the air inlet pipe (22) is located inside the port of the rolling inner cylinder (12). The right support base (3) is also a hollow box structure with a round hole on one side for the other end of the rolling inner cylinder (12) to pass through. A discharge port (31) is provided at the bottom of the right support base (3). An electromagnetic heating tube (32) and a microwave generator (33) are provided in the right support base (3). The electromagnetic heating tube (32) is located in the annular gap between the fixed outer cylinder (11) and the rolling inner cylinder (12). The microwave generator (33) extends into the rolling inner cylinder (12). A temperature and humidity sensor (34) is provided on the right support base (3). An exhaust pipe (35) is also provided above the right support base (3) and an air valve (36) is provided on the exhaust pipe (35). The fixed outer cylinder (11) is fixedly disposed between the round holes of the left support seat (2) and the right support seat (3), and the rolling inner cylinder (12) is rotatably disposed in the fixed outer cylinder (11).

2. The drum drying device according to claim 1, characterized in that: It also includes a support (4) and a discharge conveying device (5). Side columns (6) are provided on both sides of the support (4). The fixed outer cylinder (11) is rotatably arranged between the two side columns (6). The discharge conveying device (5) is located at the tail of the support (4) and directly below the right support seat (3).

3. The drum drying device according to claim 2, characterized in that: A hydraulic cylinder (7) is rotatably mounted on the bracket (4). The push-out end of the hydraulic cylinder (7) is rotatably connected to the bottom of the left support seat (2). In the initial state, the left support seat (2) is vertically mounted on the bracket (4).

4. The drum drying device according to claim 1, characterized in that: The output end of the motor (21) is provided with a drive gear (24), and a driven gear ring (121) is provided on the outer circumferential surface of the rolling inner cylinder (12). The drive gear (24) and the driven gear ring (121) mesh with each other.

5. The drum drying device according to claim 1, characterized in that: Both the left support seat (2) and the right support seat (3) are provided with at least 3 support rollers (8), and the support rollers (8) are located on the outer periphery of the rolling inner cylinder (12).

6. The drum drying device according to claim 1, characterized in that: A cylinder (9) is provided on the outside of the right support base (3). A roller cover plate (10) is provided at the push-out end of the cylinder (9). The roller cover plate (10) is located inside the right support base (3) and corresponds to the port of the rolling inner cylinder (12). A guide rod (13) is also provided inside the right support base (3). Multiple through holes are provided on the roller cover plate (10) so that the microwave generator (33), the guide rod (13) and the temperature and humidity sensor (34) pass through the through holes respectively.

7. The drum drying device according to claim 1, characterized in that: The inner wall of the rolling inner cylinder (12) is provided with a spiral plate (122), which is arranged along the circumferential surface of the rolling inner cylinder (12).

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