Cut tobacco drying production line with pipeline blockage preventing function

Abstract

The utility model relates to the technical field of tobacco production equipment, and provides a cut tobacco drying production line with a pipeline blockage prevention function, which comprises an air flow type cut tobacco dryer, a first pressure sensor and a controller, the airflow type cut tobacco dryer comprises a gas heat exchanger, a cut tobacco input unit, a cyclone blanking device, a cut tobacco output unit and a conveying pipeline; the gas heat exchanger is used for generating hot air; a first inlet of the conveying pipeline is communicated with a hot air output port of the gas heat exchanger, a second inlet of the conveying pipeline is connected with a tobacco shred output port of the tobacco shred input unit, and an output port of the conveying pipeline is connected with an inlet of the cyclone blanking device; the first pressure sensor is installed on the conveying pipeline and used for detecting pressure information of the conveying pipeline. According to the cut tobacco drying production line provided by the utility model, an operator can timely know the blockage condition of the conveying pipeline and timely take corresponding measures to carry out desilting work, so that the conveying efficiency of the conveying pipeline is improved, and the conveying reliability of the conveying pipeline is ensured.

Description

Technical Field

[0001] This utility model relates to the field of tobacco production equipment technology, and in particular to a tobacco drying production line with a function to prevent pipe blockage. Background Technology

[0002] In tobacco processing, a tobacco drying production line includes a tobacco drying machine and a flue gas treatment system, which are used to reduce the moisture content of tobacco and treat and recycle the flue gas generated during the processing.

[0003] Currently, when using airflow-type tobacco drying machines, the conveying pipes of these machines contain a mixture of hot air, tobacco, and water vapor. The physical characteristics of this mixture vary considerably, which can easily cause blockages in the conveying pipes. Operators often only discover the blockage when it becomes so severe that the conveying pipes cannot operate, at which point the cleaning work becomes quite extensive. Utility Model Content

[0004] This utility model provides a wire drying production line with a function to prevent pipe blockage, in order to solve the problem in the prior art that it is difficult to detect blockage in the conveying pipe of the airflow wire drying machine in a timely manner.

[0005] This utility model provides a wire drying production line with anti-pipe blockage function, including: an airflow wire drying machine, a first pressure sensor and a controller;

[0006] The airflow-type tobacco drying machine includes a gas heat exchanger, a tobacco input unit, a cyclone feeder, a tobacco output unit, and a conveying pipeline;

[0007] The gas heat exchanger is used to generate hot air;

[0008] The first inlet of the conveying pipe is connected to the hot air outlet of the gas heat exchanger, the second inlet of the conveying pipe is connected to the tobacco outlet of the tobacco input unit, and the outlet of the conveying pipe is connected to the inlet of the cyclone feeder.

[0009] The first pressure sensor is installed in the delivery pipeline to detect the pressure information of the delivery pipeline, and the first pressure sensor is connected to the controller.

[0010] The wire drying production line with anti-pipe blockage function provided by this utility model further includes: a flue gas treatment system and a second pressure sensor.

[0011] The airflow drying machine also includes a dehumidification pipe, the first inlet of which is connected to the tobacco input unit, the second inlet of which is connected to the tobacco output unit, and the outlet of which is connected to the inlet of the flue gas treatment system.

[0012] The second pressure sensor is installed in the drainage pipe to detect the pressure information of the drainage pipe, and the second pressure sensor is connected to the controller.

[0013] According to the present invention, a wire drying production line with a function of preventing pipe blockage is provided, wherein the second pressure sensor is located on the side of the exhaust pipe near the flue gas treatment system.

[0014] The wire drying production line with anti-pipe blockage function provided by this utility model further includes: a third pressure sensor;

[0015] The airflow-type wire drying machine also includes a negative pressure pipeline, which connects the flue gas outlet of the cyclone feeder to the flue gas inlet of the flue gas treatment system.

[0016] The third pressure sensor is installed in the negative pressure pipeline to detect the pressure information of the negative pressure pipeline, and the third pressure sensor is connected to the controller.

[0017] According to the present invention, a wire drying production line with a function of preventing pipe blockage is provided, wherein the third pressure sensor is located on the side of the negative pressure pipe close to the flue gas treatment system.

[0018] According to the present invention, a wire drying production line with anti-pipe blockage function is provided, wherein the first pressure sensor is a piezoresistive pressure sensor or a piezoelectric pressure sensor.

[0019] And / or, the second pressure sensor and the third pressure sensor are piezoresistive pressure sensors or piezoelectric pressure sensors.

[0020] According to the present invention, a wire drying production line with anti-pipe blockage function is provided, wherein the second pressure sensor and the third pressure sensor are connected to the controller, and the controller is connected to the fan in the flue gas treatment system.

[0021] The controller is used to control the operating state of the fan based on the pressure information fed back by the second pressure sensor and the third pressure sensor.

[0022] According to the present invention, a tobacco drying production line with a function of preventing pipe blockage is provided, wherein the first pressure sensor is located on the conveying pipe near the tobacco input unit.

[0023] According to the present invention, a wire drying production line with a function of preventing pipe blockage is provided, wherein a plurality of first pressure sensors are provided, and the plurality of first pressure sensors are arranged at intervals on the conveying pipe.

[0024] The wire drying production line with anti-pipe blockage function provided by this utility model further includes: an alarm;

[0025] The controller is connected to the alarm, and the controller controls the working state of the alarm based on the pressure information fed back by the first pressure sensor.

[0026] The wire drying production line with anti-pipe blockage function provided by this utility model collects the pressure information of the conveying pipeline in real time by setting a first pressure sensor on the conveying pipeline and feeds it back to the controller. The operator can promptly know the blockage of the conveying pipeline based on the pressure information of the conveying pipeline and take corresponding measures to clear the blockage. In particular, it can easily handle the minor blockage, improve the conveying efficiency of the conveying pipeline, and ensure the conveying reliability of the conveying pipeline. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this invention 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the wire drying production line with anti-pipe blockage function provided by this utility model.

[0029] Figure 2 This is a control logic block diagram of a wire drying production line with anti-pipe blockage function provided by this utility model.

[0030] Figure label:

[0031] 1. Airflow-type tobacco drying machine; 2. First pressure sensor; 3. Controller; 4. Flue gas treatment system; 5. Second pressure sensor; 6. Third pressure sensor; 7. Alarm; 11. Gas heat exchanger; 12. Tobacco input unit; 13. Cyclone feeder; 14. Tobacco output unit; 15. Conveying pipe; 16. Dehumidification pipe; 17. Negative pressure pipe; 18. Combustion furnace; 41. Fan; 121. Conveying vibrating trough; 122. First air lock; 123. Expansion unit; 141. Output vibrating trough; 142. Second air lock. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0033] The following is combined Figures 1 to 2 The present invention will provide a detailed description of the wire drying production line with anti-pipe blockage function provided by the present invention through specific embodiments and application scenarios.

[0034] like Figure 1 and Figure 2 As shown, this embodiment provides a wire drying production line with a function to prevent pipe blockage, including: an airflow wire drying machine 1, a first pressure sensor 2, and a controller 3.

[0035] The airflow-type tobacco drying machine 1 includes a gas heat exchanger 11, a tobacco input unit 12, a cyclone feeder 13, a tobacco output unit 14, and a conveying pipe 15.

[0036] Gas heat exchanger 11 is used to generate hot air.

[0037] The first inlet of the conveying pipe 15 is connected to the hot air outlet of the gas heat exchanger 11, the second inlet of the conveying pipe 15 is connected to the tobacco outlet of the tobacco input unit 12, and the outlet of the conveying pipe 15 is connected to the inlet of the cyclone feeder 13.

[0038] The first pressure sensor 2 is installed on the conveying pipeline 15 to detect the pressure information of the conveying pipeline 15. The first pressure sensor 2 is connected to the controller 3.

[0039] Understandably, the hot flue gas generated by the combustion furnace 18 heats the air in the gas heat exchanger 11, and the hot air is sent from the hot air outlet of the gas heat exchanger 11 to the first inlet of the delivery pipe 15.

[0040] The second inlet of the conveying pipe 15 is connected to the tobacco input unit 12. The tobacco input unit 12 includes a conveying trough 121, a first airlock 122, and an expansion unit 123. The tobacco is fed into the first airlock 122 through the conveying trough 121. The tobacco and steam in the first airlock 122 are heated and the humidity is controlled in the expansion unit 123 to adjust the moisture content of the tobacco. Then, the mixture of hot air, steam, and tobacco is fed into the conveying pipe 15 from the tobacco input unit 12 through the second inlet of the conveying pipe 15. The tobacco flows... The tobacco is rapidly dried in hot air, and the mixture is fed into the cyclone feeder 13 via the conveying pipe 15. The cyclone feeder 13 generates centrifugal force through rotating airflow, separating the dried tobacco from the hot air. The dried tobacco falls into the tobacco output unit 14, which includes a second airlock 142 and an output vibration groove 141. The dried tobacco first falls into the second airlock 142 and is then conveyed to the output vibration groove 141 and discharged from the airflow drying machine 1. The hot air mixed with tobacco is discharged from the top of the cyclone feeder 13 and enters the negative pressure pipe 17. Part of the mixed gas in the negative pressure pipe 17 is sent back to the gas heat exchanger 11, realizing the recovery and utilization of hot air while also regulating the pressure in the conveying pipe 15. The other part of the mixed gas is sent to the flue gas treatment system 4 via the negative pressure pipe 17, and is discharged into the atmosphere after being purified by the flue gas treatment system 4.

[0041] Because the conveying pipe 15 carries a mixture of tobacco, hot air, and steam, it is prone to blockage. During the process of partial to complete blockage of the conveying pipe 15, operators may not easily detect it until there is no tobacco in the output trough 141. At this point, the workload of cleaning the conveying pipe 15 is very large, and in severe cases, it may even require shutdown for cleaning. In this embodiment, a first pressure sensor 2 is installed on the conveying pipe 15 to monitor the conveying pressure in real time. When the pressure increases and exceeds a preset value, it can be determined that the pipe is blocked. Especially when the pressure just exceeds the preset value, it indicates that the conveying pipe 15 has a slight blockage. At this time, the cleaning workload is small, and operators can easily restore the smooth flow of the conveying pipe 15.

[0042] Specifically, controller 3 can be a microcontroller or a PLC controller.

[0043] The wire drying production line with anti-pipe blockage function provided by this utility model collects the pressure information of the conveying pipe 15 in real time by setting a first pressure sensor 2 on the conveying pipe 15 and feeds it back to the controller 3. The operator can promptly know the blockage of the conveying pipe 15 based on the pressure information of the conveying pipe 15 and take corresponding measures to clear the blockage. In particular, it can easily handle the minor blockage, improve the conveying efficiency of the conveying pipe 15 and ensure the conveying reliability of the conveying pipe 15.

[0044] In some embodiments, such as Figure 1 and Figure 2 As shown, the wire drying production line with anti-pipe blockage function in this embodiment also includes: a flue gas treatment system 4 and a second pressure sensor 5.

[0045] The airflow drying machine 1 also includes a dehumidification pipe 16. The first inlet of the dehumidification pipe 16 is connected to the tobacco input unit 12, the second inlet of the dehumidification pipe 16 is connected to the tobacco output unit 14, and the outlet of the dehumidification pipe 16 is connected to the inlet of the flue gas treatment system 4.

[0046] The second pressure sensor 5 is installed in the drainage pipe 16 to detect the pressure information of the drainage pipe 16. The second pressure sensor 5 is connected to the controller 3.

[0047] Understandably, dehumidifier hoods are usually installed at the conveying trough 121 and the output trough 141 of the airflow drying machine 1 to collect excess water vapor and moisture in the conveying pipe 15 during the production of the airflow drying machine 1, and discharge it to the flue gas treatment system for purification through the dehumidifier pipe 16.

[0048] The second pressure sensor 5 is used to measure the pressure information of the exhaust pipe 16, including the pipe pressure from the conveying trough 121 to the branch of the flue gas treatment system 4, and the pipe pressure from the output trough 141 to the branch of the flue gas treatment system 4. When the pressure value measured by the second pressure sensor 5 is large, it means that the gas flow rate in the exhaust pipe 16 is too small, that is, the gas flow in the exhaust pipe 16 is slow. Or, when the pressure value measured by the second pressure sensor 5 is small, it means that the gas flow rate in the exhaust pipe 16 is too large, that is, the gas flow in the exhaust pipe 16 is too fast. The gas flow rate in the exhaust gas pipe can be adjusted according to the pressure value to keep the pressure within the normal range and ensure the stability of the exhaust gas delivery in the exhaust pipe 16.

[0049] In some embodiments, such as Figure 1 As shown, in this embodiment, the second pressure sensor 5 is located on the side of the exhaust pipe 16 near the flue gas treatment system 4.

[0050] Understandably, the two ends of the exhaust pipe 16 are connected to the airflow-type dryer 1 and the flue gas treatment system 4, respectively. Since the pressure value measured by the second pressure sensor 5 needs to be adjusted, it is achieved by adjusting the adsorption force of the flue gas treatment system 4 on the exhaust gas. Therefore, when adjusting the adsorption force of the flue gas treatment system 4, the pressure change of the exhaust pipe 16 closer to the flue gas treatment system 4 is more obvious. Therefore, placing the second pressure sensor 5 on the side of the exhaust pipe 16 closer to the flue gas treatment system 4 can make the measurement result of the second pressure sensor 5 more accurate.

[0051] In some embodiments, such as Figure 1 and Figure 2 As shown, the wire drying production line with anti-pipe blockage function in this embodiment also includes: a third pressure sensor 6.

[0052] The airflow drying machine 1 also includes a negative pressure pipe 17, which connects the flue gas outlet of the cyclone feeder 13 to the flue gas inlet of the flue gas treatment system.

[0053] The third pressure sensor 6 is installed in the negative pressure pipeline 17 to detect the pressure information of the negative pressure pipeline 17. The third pressure sensor 6 is connected to the controller 3.

[0054] Understandably, since a portion of the gas in the negative pressure pipeline 17 is returned to the gas heat exchanger 11 and another portion is sent to the flue gas treatment system 4, the gas returned to the gas heat exchanger 11 needs to ensure that the delivery pipeline 15 is within a certain pressure range. Therefore, the pressure of the negative pressure pipeline 17 entering the flue gas treatment system 4 also needs to be within a certain range. The third pressure sensor 6 in this embodiment can characterize the pressure information of the negative pressure pipeline 17 entering the flue gas treatment system 4, thereby ensuring that the negative pressure pipeline 17 delivers gas to the flue gas treatment system 4 within a certain pressure range, thus ensuring the stability of the delivery of the negative pressure pipeline 17.

[0055] In some embodiments, such as Figure 1 As shown, in this embodiment, the third pressure sensor 6 is located on the side of the negative pressure pipe 17 near the flue gas treatment system 4.

[0056] Understandably, the two ends of the negative pressure pipe 17 are connected to the airflow-type filament dryer 1 and the flue gas treatment system 4, respectively. Since the pressure value measured by the third pressure sensor 6 needs to be adjusted, it is achieved by adjusting the adsorption force of the flue gas treatment system 4 on the negative pressure gas. Therefore, when adjusting the adsorption force of the flue gas treatment system 4, the pressure change of the negative pressure pipe 17 closer to the flue gas treatment system 4 is more obvious. Therefore, placing the third pressure sensor 6 on the side of the negative pressure pipe 17 closer to the flue gas treatment system 4 can make the measurement result of the third pressure sensor 6 more accurate.

[0057] In some embodiments, the first pressure sensor 2 in this embodiment is a piezoresistive pressure sensor or a piezoelectric pressure sensor.

[0058] Understandably, piezoresistive pressure sensors have a simple structure and fast response speed, while piezoelectric pressure sensors have high sensitivity and good linear output, both of which are suitable for selection as the first pressure sensor 2.

[0059] In some embodiments, the second pressure sensor 5 and the third pressure sensor 6 in this embodiment are piezoresistive pressure sensors or piezoelectric pressure sensors.

[0060] Understandably, piezoresistive pressure sensors have a simple structure and fast response speed, while piezoelectric pressure sensors have high sensitivity and good linear output, making them suitable for selection as the second pressure sensor 5 and the third pressure sensor 6.

[0061] In some embodiments, such as Figure 1 and Figure 2 As shown, in this embodiment, the second pressure sensor 5 and the third pressure sensor 6 are connected to the controller 3, and the controller 3 is connected to the fan 41 in the flue gas treatment system 4.

[0062] The controller 3 is used to control the working state of the fan 41 based on the pressure information fed back by the second pressure sensor 5 and the third pressure sensor 6.

[0063] Understandably, the flue gas treatment system 4 is equipped with a fan 41. By adjusting the speed of the fan 41, the adsorption force of the flue gas treatment system 4 on the exhaust pipe 16 and the negative pressure pipe 17 can be adjusted, thereby regulating the pressure of the exhaust pipe 16 and the negative pressure pipe 17 to ensure that the pressure of the exhaust pipe 16 and the negative pressure pipe 17 operates within a certain pressure range. Furthermore, since the controller 3 can automatically control the working state of the fan 41 and adjust the speed of the fan 41 based on the pressure information collected by the second pressure sensor 5 and the third pressure sensor 6, the automatic control of the pressure of the exhaust pipe 16 and the negative pressure pipe 17 is realized, which improves the automation level of the wire drying production line and increases the production efficiency of the wire drying production line.

[0064] In some embodiments, such as Figure 1 As shown, in this embodiment, the first pressure sensor 2 is located on the delivery pipe 15 near the tobacco input unit 12.

[0065] Understandably, since the conveying pipe 15 from the gas heat exchanger 11 to the tobacco input unit 12 is filled with hot air, it is not easy to get blocked. However, at the tobacco input unit 12, there is an injection of tobacco and steam, and the mixing of gas and solids can easily cause blockage. Therefore, the area near the tobacco input unit 12 is the most likely place for blockage in the conveying pipe 15. In this embodiment, the first pressure sensor 2 is placed at the most likely place for blockage, which is more beneficial for obtaining real-time blockage information of the conveying pipe 15.

[0066] In some embodiments, such as Figure 1 As shown, in this embodiment, there are multiple first pressure sensors 2, which are spaced apart on the conveying pipe 15.

[0067] It is understandable that the flow rate, temperature and mixing ratio of the mixture of hot air, tobacco and steam on the conveying pipe 15 are different at different times. When the pressure information collected by the first pressure sensor 2 is damaged or the measurement result is inaccurate, this embodiment sets up multiple first pressure sensors 2, which can use the measured pressure information as alternative information and select the pressure value obtained by most of the first pressure sensors 2 to more accurately characterize the pressure in the conveying pipe 15.

[0068] In one example, this embodiment sets up three pressure sensors. When actually observing the pressure information, the average of the two values ​​with the smallest difference among the three is taken as the measured value.

[0069] In some embodiments, such as Figure 1 and Figure 2 As shown, the wire drying production line with anti-pipe blockage function in this embodiment also includes: an alarm 7.

[0070] The controller 3 is connected to the alarm 7. The controller 3 controls the working status of the alarm 7 based on the pressure information fed back by the first pressure sensor.

[0071] Understandably, the first pressure sensor feeds back pressure information to the controller 3. When the pressure of the first pressure sensor is higher than the preset value, the controller 3 controls the alarm 7 to sound an alarm, reminding the operator that there is a blockage in the delivery pipeline 15.

[0072] The alarm 7 can be a buzzer, which sounds an alarm when the pressure of the first pressure sensor is higher than a preset value. The alarm 7 can also be an audible and visual alarm, which sounds an alarm and a light alarm when the pressure of the first pressure sensor is higher than a preset value.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wire drying production line with anti-pipe blockage function, characterized in that, The application relates to a tobacco drying system. The system comprises: an air flow type tobacco drying machine, a first pressure sensor and a controller; the air flow type tobacco drying machine comprises a gas heat exchanger, a tobacco input unit, a cyclone material drop device, a tobacco output unit and a conveying pipeline; the gas heat exchanger is used for generating hot air; a first inlet of the conveying pipeline is communicated with a hot air outlet of the gas heat exchanger, a second inlet of the conveying pipeline is connected with a tobacco outlet of the tobacco input unit, and an outlet of the conveying pipeline is connected with an inlet of the cyclone material drop device; 2. The cut tobacco production line having a function of preventing pipe clogging according to claim 1, wherein the first pressure sensor is installed on the conveying pipeline and is used for detecting pressure information of the conveying pipeline, and the first pressure sensor is connected with the controller. The system further comprises: a flue gas treatment system and a second pressure sensor; the air flow type tobacco drying machine further comprises a moisture removal pipeline, a first inlet of the moisture removal pipeline is connected with the tobacco input unit, a second inlet of the moisture removal pipeline is connected with the tobacco output unit, and an outlet of the moisture removal pipeline is connected with an inlet of the flue gas treatment system; 3. A tobacco rod production line having a function of preventing clogging of a duct according to claim 2, wherein the second pressure sensor is installed on the moisture removal pipeline and is used for detecting pressure information of the moisture removal pipeline, and the second pressure sensor is connected with the controller.

4. The tobacco rod producing line having a pipe clogging prevention function according to claim 2, wherein The second pressure sensor is arranged on one side of the moisture removal pipeline close to the flue gas treatment system. The system further comprises: a third pressure sensor; the air flow type tobacco drying machine further comprises a negative pressure pipeline, the negative pressure pipeline connects a flue gas outlet of the cyclone material drop device and a flue gas inlet of the flue gas treatment system; 5. A tobacco rod production line having a function of preventing clogging of a duct according to claim 4, wherein the third pressure sensor is installed on the negative pressure pipeline and is used for detecting pressure information of the negative pressure pipeline, and the third pressure sensor is connected with the controller.

6. The tobacco rod production line having a pipe clogging prevention function according to claim 4, wherein The third pressure sensor is arranged on one side of the negative pressure pipeline close to the flue gas treatment system. The first pressure sensor is a piezoresistive pressure sensor or a piezoelectric pressure sensor; 7. The tobacco rod production line having a pipe clogging prevention function according to claim 4, wherein and / or, the second pressure sensor and the third pressure sensor are piezoresistive pressure sensors or piezoelectric pressure sensors. The second pressure sensor and the third pressure sensor are connected with the controller, and the controller is connected with a fan in the flue gas treatment system; 8. The tobacco rod production line having a pipe clogging prevention function according to claim 1, wherein wherein the controller is used for controlling a working state of the fan according to the pressure information fed back by the second pressure sensor and the third pressure sensor.

9. The tobacco rod production line having a pipe clogging prevention function according to claim 1, wherein The first pressure sensor is arranged on the conveying pipeline close to the tobacco input unit.

10. The tobacco rod production line having a pipe clogging prevention function according to claim 1, wherein A plurality of first pressure sensors are arranged on the conveying pipeline at intervals. The system further comprises: an alarm; the controller is connected with the alarm, and the controller controls a working state of the alarm according to the pressure information fed back by the first pressure sensor.

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