Roller cut tobacco drying device and heat source control method

Abstract

The invention discloses a drum cut tobacco drying device and a heat source control method, the drum cut tobacco drying device comprises a drum assembly, the drum assembly comprises a fixed outer drum and a rolling inner drum, the rolling inner drum is sleeved in the fixed outer drum, two ports of the rolling inner drum extend out of two ends of the fixed outer drum, and an annular gap exists between the fixed outer drum and the rolling inner drum; the left supporting seat is of a hollow box structure, a round hole is formed in one side of the left supporting seat, the end of the rolling inner cylinder can penetrate through the round hole, a motor used for driving the rolling inner cylinder to rotate is arranged in the left supporting seat, a feeding groove and an air inlet pipe are further arranged on one side of the left supporting seat, the feeding groove extends into the rolling inner cylinder, and the air inlet pipe is located on the inner side of a port of the rolling inner cylinder; the right supporting seat is also of a hollow box body structure, a round hole is formed in one side of the right supporting seat so that the other end of the rolling inner cylinder can penetrate through the round hole, and a discharging opening is formed in the bottom of the right supporting seat; cut tobacco can be dried in three modes of heat transfer, convective heat transfer and heat radiation, so that the cut tobacco drying efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the tobacco processing technical field, and particularly relates to a cylinder drying apparatus and a heat source control method. BACKGROUND

[0002] The cylinder drying is one of important processes in the cigarette processing, and its main functions are as follows: drying the tobacco to the moisture content suitable for rolling into a cigarette; making the tobacco further loose and deformed to improve the filling capacity; volatilizing and discharging part of green and miscellaneous substances in the tobacco during the drying process to make the tobacco aroma exposed and improve the tobacco quality; and making the different formula components in the tobacco mixed more uniformly. As can be seen, the cylinder drying apparatus is a key link to determine the quality of the cigarette processing. The existing drying apparatus has a single heat source, which leads to a low drying efficiency. For example, the patent with the publication number CN212911646U discloses a cylinder drying apparatus, which comprises a cylinder body, a spiral pipe, a rack, a feeding port, a discharging port, front and rear end covers of the spiral pipe, a hot air inlet pipeline, a hot air outlet pipeline, and a rotary joint. The cylinder body is fixed to the rack, the inside of the cylinder body is provided with the spiral pipe, the front end of the spiral pipe is connected with the hot air inlet, and the rear end of the spiral pipe is connected with the hot air outlet. The feeding port is left above the front end of the cylinder body to allow the material to enter the cylinder body. In the apparatus, the drying is only performed by the hot air, and the hot air only acts on the upper layer of the tobacco. Especially when the amount of the tobacco is large, even if the cylinder rotates to turn the tobacco, the hot air is difficult to quickly take out the moisture due to the short contact time between the hot air and the upper layer of the tobacco, so that the drying efficiency is low. In addition, the power of the heat source is constant or manually controlled in the prior art, and cannot be adjusted in real time according to the actual drying condition, which leads to a slow and lagged heat source control. To solve the above technical problems, the present application provides a cylinder drying apparatus and a heat source control method. SUMMARY

[0003] The present application aims to provide a cylinder drying apparatus and a heat source control method, which can dry the tobacco through three ways of heat transfer, convection and heat radiation, so as to significantly improve the drying efficiency.

[0004] To solve the above technical problems, the present application adopts the following technical scheme: A cylinder drying apparatus, comprising: A cylinder assembly, which comprises a fixed outer cylinder and a rolling inner cylinder, the rolling inner cylinder is sleeved in the fixed outer cylinder, and the two ends of the rolling inner cylinder extend out of the two ends of the fixed outer cylinder, and there is an annular gap between the fixed outer cylinder and the rolling inner cylinder; The left support base is a hollow box structure and is provided with a circular hole at one side for the end of the rolling inner cylinder to pass through. A motor for driving the rolling inner cylinder to rotate is arranged inside the left support base. An inlet slot and an air inlet pipe are arranged at one side of the left support base. The inlet slot 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 and is provided with a circular hole at one side for the other end of the rolling inner cylinder to pass through. A discharge port is arranged at the bottom of the right support base. An electromagnetic heating pipe and a microwave generator are arranged in the right support base. The electromagnetic heating pipe 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 arranged on the right support base. An exhaust pipe is further arranged above the right support base and is provided with an air valve. The fixed outer cylinder is fixedly arranged between the circular holes of the left support base and the right support base. The rolling inner cylinder is rotatably arranged in the fixed outer cylinder.

[0005] Further, a support and a discharge conveying device are further included. Side columns are arranged at both sides of the support. The fixed outer cylinder is rotatably arranged between the two side columns. The discharge conveying device is arranged at the tail of the support and is located directly below the right support base.

[0006] Further, a hydraulic cylinder is rotatably arranged on the support. The pushing end of the hydraulic cylinder is rotatably connected to the bottom of the left support base. In the initial state, the left support base is vertically arranged on the support.

[0007] Further, a driving gear is arranged at the output end of the motor. A driven gear ring is arranged on the outer circumferential surface of the rolling inner cylinder. The driving gear and the driven gear ring are engaged.

[0008] Further, at least three supporting rollers are arranged in the left support base and the right support base. The supporting rollers are located on the outer periphery of the rolling inner cylinder.

[0009] Further, a cylinder is arranged outside the right support base. A drum cover plate is arranged at the pushing end of the cylinder. The drum cover plate is located inside the right support base and directly corresponds to the port of the rolling inner cylinder. A guide rod is further arranged inside the right support base. A plurality of through holes are arranged on the drum cover plate, so that the microwave generator, the guide rod, and the temperature and humidity sensor pass through the through holes, respectively.

[0010] Further, a spiral plate is arranged on the inner wall of the rolling inner cylinder. The spiral plate is arranged along the circumferential surface of the rolling inner cylinder.

[0011] On the other hand, for the control of the electromagnetic heating pipe and the microwave generator, the present application further provides a heat source control method of a drum drying device, which comprises: Detecting the moisture content F0 of the tobacco before drying; During the drying process, the humidity value F is monitored in real time by a temperature and humidity sensor (34). △ ; Through F0 and F △ Establish the electromagnetic heating power regulation equation P D = f (F) △ ) and microwave heating power control equation P W = f (F) △ ), where the magnetic heating power control equation P D The calculation formula is: P D =P D0 +mP D0 (F) △ -F0) / F0; Microwave heating power control equation P W The calculation formula is: P W =P W0 +nP W0 (F) △ -F0) / F0; In the formula, P D To adjust the power of the electromagnetic coil, P D0 To set the power of the electromagnetic coil, P W To adjust the power of the microwave generator, P W0 The design power for the microwave generator is given by m and n, where m and n are both control coefficients.

[0012] Preferably, the value of the control coefficient m is 0.428 and the value of the control coefficient n is 0.235.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The application is provided with an air inlet pipe on the left support base to facilitate the hot air flow into the rolling inner cylinder for drying, and a cylinder cover plate is connected by a pneumatic cylinder on the other side of the rolling inner cylinder to close the port of the rolling inner cylinder to prevent a large amount of hot air flow from escaping from the discharge port, and an electromagnetic heating pipe and a microwave generator are also provided on the right support base, wherein the microwave generator extends into the rolling inner cylinder to heat the tobacco by microwave, and the electromagnetic heating pipe extends into the annular gap between the fixed outer cylinder and the rolling inner cylinder to heat the tobacco by electromagnetic heating, so that the device can dry the tobacco by the combined action of heat transfer, convection and thermal radiation, and the drying efficiency is significantly improved. In addition, the heat source control method of the drum drying device is also provided in the application, which can adjust the power of electromagnetic heating and microwave heating according to the moisture content of the tobacco before drying and the real-time humidity value, and since the two can change according to the change of the humidity value, the drying efficiency can be improved while the energy consumption of the drying process can be significantly reduced, and the defects of slow response and control lag of the heat source control in the prior art are overcome. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the application.

[0015] Figure 2 It is another side view of the application.

[0016] Figure 3 It is a disassembled schematic diagram of the left support base.

[0017] Figure 4 It is a disassembled schematic diagram of the right support base.

[0018] Figure 5 It is a schematic diagram of the internal structure of the right support base.

[0019] In the figure, 1-drum assembly, 2-left support base, 21-motor, 22-air inlet pipe, 23-feeding groove, 3-right support base, 31-discharge port, 32-electromagnetic heating pipe, 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-supporting roller, 9-pneumatic cylinder, 10-cylinder cover plate, 11-fixed outer cylinder, 12-rolling inner cylinder, 121-driven gear ring, 122-spiral plate, 13-guide rod. DETAILED DESCRIPTION

[0020] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0022] In the description of the present application, it should also be noted that, unless explicitly specified and limited, the terms "arrange", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Please refer to Figures 1-5 As shown in the drawings, the present application provides a drum drying device, comprising: A drum assembly 1, the drum assembly 1 comprises 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 out of 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 additionally installed on the outer wall of the fixed outer cylinder 11; A left support seat 2, which is a hollow box structure and is provided with a circular hole on one side for the end of the rolling inner cylinder 12 to pass through, the left support seat 2 is internally provided with a motor 21 for driving the rolling inner cylinder 12 to rotate, and a feeding groove 23 and an air inlet pipe 22 are further provided on one side of the left support seat 2, the feeding groove 23 extends into the rolling inner cylinder 12, so as to facilitate the addition of tobacco to the rolling inner cylinder 12, the air inlet pipe 22 is located on the inner side of the port of the rolling inner cylinder 12, the air inlet pipe 22 is connected with a hot gas source, so as to provide a hot gas flow into the rolling inner cylinder 12, and the drying is performed by the hot gas flow; Right support seat 3, which is also a hollow box structure and is provided with a circular hole on one side for the other end of the rolling inner cylinder 12 to pass through, and is provided with a discharge port 31 at the bottom of the right support seat 3, and the cut tobacco is discharged from the discharge port 31 after the drying is completed, and the right support seat 3 is provided with an electromagnetic heating pipe 32 and a microwave generator 33, the electromagnetic heating pipe 32 is located in the annular gap between the fixed outer cylinder 11 and the rolling inner cylinder 12, and the electromagnetic heating pipe 32 does not contact the side wall of the fixed outer cylinder 11 and the rolling inner cylinder 12, heat is generated by the electromagnetic heating pipe 32 and is transmitted to the rolling inner cylinder 12, and the microwave generator 33 extends into the rolling inner cylinder 12 and is located above the inside of the rolling inner cylinder 12, and the microwave generator 33 emits heat radiation to dry the cut tobacco, and the right support seat 3 is provided with a temperature and humidity sensor 34 to monitor the temperature of the rolling inner cylinder 12 and the humidity of the moisture carried by the hot air flow in the drying process, and the heating power of the electromagnetic heating pipe 32 and the microwave generator 33 is controlled by this, and the right support seat 3 is also provided with an exhaust pipe 35 and a gas valve 36 is arranged on the exhaust pipe 35, and the hot air flow is discharged through the exhaust pipe 35. The fixed outer cylinder 11 is fixedly arranged 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 an integral whole, and the rolling inner cylinder 12 is rotatably arranged in the fixed outer cylinder 11.

[0024] The device also includes a support 4 and a discharge conveying device 5, the support 4 is provided with side columns 6 on both sides, the fixed outer cylinder 11 is rotatably arranged between the two side columns 6, so that the fixed outer cylinder 11 can be inclined to facilitate discharge, and the discharge conveying device 5 is arranged at the tail of the support 4 and is located directly below the right support seat 3, so that the cut tobacco discharged from the discharge port 31 at the bottom of the right support seat 3 can directly fall onto the discharge conveying device 5.

[0025] In order to realize the inclined discharge of the fixed outer cylinder 11, a hydraulic cylinder 7 is rotatably arranged on the support 4, the pushing 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 arranged on the support 4, when the hydraulic cylinder 7 is pushed out, the fixed outer cylinder 11 is inclined by 10-20°, in addition, the inner wall of the rolling inner cylinder 12 is provided with a spiral plate 122, the spiral plate 122 is arranged along the circumferential surface of the rolling inner cylinder 12, and when discharging, the rolling inner cylinder 12 rotates, and the cut tobacco is discharged to the port through the action of the spiral plate 122.

[0026] In order to enable the motor 21 to drive the rolling inner cylinder 12 to rotate, the output end of the motor 21 is provided with a driving gear 24, and a driven gear ring 121 is arranged on the outer circumferential surface of the rolling inner cylinder 12, the driving gear 24 and the driven gear ring 121 are engaged, and then the rotating power is transmitted to the rolling inner cylinder 12 to make it rotate.

[0027] In order to support the rolling inner cylinder 12 and not to hinder its rotation, at least three supporting rollers 8 are arranged in the left supporting seat 2 and the right supporting seat 3, and the supporting rollers 8 are arranged in rotation and located at the outer periphery of the rolling inner cylinder 12.

[0028] In some embodiments, a cylinder 9 is arranged outside the right supporting seat 3, and the pushing end of the cylinder 9 is provided with a rolling cover plate 10, the rolling cover plate 10 is located inside the right supporting seat 3 and faces the port of the rolling inner cylinder 12, and the diameter of the rolling cover plate 10 needs to be larger than the diameter of the port of the rolling inner cylinder 12 so that the rolling cover plate 10 can cover the port of the rolling inner cylinder 12, and in the initial state, the cylinder 9 is separated from the port of the rolling inner cylinder 12, and at this time, the port of the rolling inner cylinder 12 is in an open state to facilitate discharging, and when the cylinder 9 is pushed out, the rolling cover plate 10 covers the port of the rolling inner cylinder 12, thereby preventing the escape of a large amount of hot air flow, and a guide rod 13 is further arranged inside the right supporting seat 3, and a plurality of through holes are arranged on the rolling 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, and the guide rod 13 prevents the rolling cover plate 10 from rotating, and it should be pointed out that when the rolling cover plate 10 covers the port of the rolling inner cylinder 12, the hot air flow is discharged from the through hole corresponding to the temperature and humidity sensor 34, and since the hot air flow will take away the moisture in the tobacco during the drying process, the temperature and humidity of the discharged hot air flow are detected by the temperature and humidity sensor 34.

[0029] Further comprising a controller configured to control the opening and speed adjustment of the motor 21, the opening of the hydraulic cylinder 7, the opening of the cylinder 9, the opening of the air valve 36, the opening and power control of the electromagnetic heating tube 32 and the microwave generator 33, and the temperature and humidity data transmitted by the temperature and humidity sensor 34.

[0030] The working process of the present application is as follows: the tobacco enters the rolling inner cylinder 12 from the feeding groove 23, the air inlet pipe 22 is connected to the heat source to blow hot air flow into the rolling inner cylinder 12 to dry the tobacco, and the electromagnetic heating tube 32 and the microwave generator 33 can be turned on during the drying process to dry the tobacco by heat transfer, convection heat transfer and heat radiation, the cylinder 9 is extended to cover the port of the rolling inner cylinder 12 by the cylinder 9 to prevent the escape of a large amount of hot air flow during the drying process, and after the drying is completed, the rolling cover plate 10 is retracted, the port of the rolling inner cylinder 12 is open, the hydraulic cylinder 7 is started to make the fixed outer cylinder 11 inclined, and the tobacco is discharged from the discharge port 31 and falls to the discharge conveying device 5.

[0031] On the other hand, for the control of the electromagnetic heating tube and the microwave generator, the present application further provides a heat source control method of a drum drying device, which comprises: The moisture content F0 of the cut tobacco is detected before the cut tobacco is cut, and the value is measured before the cut tobacco enters the feeding groove (23), preferably, the detection is multi-position detection and the average value is taken, and the F0 value is input into the controller after the detection is completed; The humidity value F is monitored in real time by the temperature and humidity sensor (34) during the cutting process △ The humidity value F △ is the moisture carried out by the cut tobacco in the hot air flow; The F0 and F △ establish the electromagnetic heating power control equation P D = f (F △ ) and the microwave heating power control equation P W = f (F △ ), which are established in the controller, wherein the calculation formula of the electromagnetic heating power control equation P D is: P D =P D0 +mP D0 (F △ -F0) / F0; The calculation formula of the microwave heating power control equation P W is: P W =P W0 +nP W0 (F △ -F0) / F0; In the formula, P D is the electromagnetic coil adjustment power, P D0 is the electromagnetic coil set power, P W is the microwave generator adjustment power, P W0 is the microwave generator design power, and m and n are control coefficients; the value of the control coefficient m is 0.428, and the value of the control coefficient n is 0.235.

[0032] In the above adjustment formula, F0 is the initial value, F △ is the humidity value carried away by the hot air flow, and since the cutting process is continuously carried out, the F △ value gradually increases to a peak value and then gradually decreases, so that (F △ -F0) is negative, and the values of P D and P W change with the change of (F △ -F0), so as to adjust the heat source power according to the change of the hot air humidity, on the one hand, to improve the cutting efficiency and reduce the energy consumption in the cutting process, and on the other hand, to avoid the problem of control lag.

[0033] While the application has been described with reference to numerous exemplary embodiments, it will be understood that various other modifications can be made within the scope of the application as disclosed herein. More particularly, many modifications can be made to the components of the subject combination layout or the layout itself without departing from the scope and spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein.

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).

8. A heat source control method for a drum drying device, characterized in that, include: The moisture content F0 of the tobacco shreds was measured before drying. During the drying process, the humidity value F is monitored in real time by a temperature and humidity sensor (34). △ ; Through F0 and F △ Establish the electromagnetic heating power regulation equation P D = f (F) △ ) and microwave heating power control equation P W = f (F) △ ), where the magnetic heating power control equation P D The calculation formula is: P D =P D0 +mP D0 (F) △ -F0) / F0; Microwave heating power control equation P W The calculation formula is: P W =P W0 +nP W0 (F) △ -F0) / F0; In the formula, P D To adjust the power of the electromagnetic coil, P D0 To set the power of the electromagnetic coil, P W To adjust the power of the microwave generator, P W0 The design power for the microwave generator is given by m and n, where m and n are both control coefficients.

9. The heat source control method for a drum drying filament device according to claim 1, characterized in that: The value of the control coefficient m is 0.428, and the value of the control coefficient n is 0.235.

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