CN112362525B - Method and device for rapidly detecting water content of low-moisture tobacco shreds - Google Patents

Abstract

The invention provides a method and a device for quickly detecting the moisture content of low-moisture cut tobacco, which comprises the steps of sampling and weighing cut tobacco, drying the cut tobacco, weighing and calculating the moisture content of the cut tobacco, wherein the moisture of the cut tobacco is calculated by quickly drying and weighing the cut tobacco at a preset temperature for a set time, so that the detection time required by an oven method of two hours in an industry standard is reduced, and the problems that the measurement period of the moisture content of the low-moisture cut tobacco is longer and the on-line cut tobacco production cannot be timely fed back and regulated in the prior art are solved.

Description

A rapid detection method and device for the moisture content of low-moisture shredded tobacco

technical field

The invention relates to the technical field of detecting the moisture content of shredded tobacco, in particular to a method and device for quickly detecting the moisture content of cut tobacco with low moisture content.

Background technique

Shredded tobacco is an important part of the cigarette manufacturing process. It is responsible for the process of changing tobacco leaves from sheet to shredded and moisture. The moisture of shredded tobacco has an important impact on the physical and sensory quality of finished cigarettes. Shredded tobacco is to go through the processes of dampening, feeding, shredding, drying, and flavoring the tobacco leaves, so that the moisture, structure, and filling value of the finished shredded tobacco meet the requirements of the process indicators, and the tobacco leaves are pure and free of debris, loose and non-agglomerated, and meet the requirements of rolling. needs. For the shredded process, the moisture of cut tobacco after drying and flavoring is between 11% and 14%. Rapid detection of the moisture after drying and flavoring has an important influence on the stability of the quality of finished tobacco.

The traditional moisture detection technology of tobacco companies is to use the tobacco industry standard two-hour oven method and online moisture meter detection. Although the test result of the two-hour oven method is accurate, the test time is long, which is not conducive to production control and timely adjustment of the online moisture content of cut tobacco; although the online moisture meter test can quickly identify the moisture content of cut tobacco, it is necessary to establish corresponding moisture meter channels for different grades of cut tobacco , changes in measurement conditions (location, air pressure, etc.) and external environment (temperature and humidity, etc.) will affect the accuracy of the test, and the online moisture meter needs regular calibration.

Currently, when testing the moisture content of cut tobacco with low moisture content (11%-14%), the quality inspector takes a sample of the cut tobacco online and conducts a two-hour oven test in the laboratory. Dry in an oven at 100°C for 2 hours, and measure after cooling for 30 minutes. The whole process takes a long time, and the production time of each batch of cut tobacco is only 1-2 hours. The detection of cut tobacco moisture is lagging behind the control of production and cannot achieve real-time The role of regulating online cut tobacco moisture.

Contents of the invention

The embodiment of the present invention provides a method and device for quickly detecting the moisture content of low-moisture shredded tobacco. The moisture content of shredded tobacco is calculated by quickly drying and weighing the shredded tobacco at a preset temperature and time, which reduces the industry standard two-hour oven method. The required detection time solves the problem in the prior art that the measurement cycle of the moisture content of low-moisture shredded tobacco is long and cannot be fed back to regulate online shredded tobacco production in time.

In view of the problems referred to above, the technical solution proposed by the present invention is:

A method for quickly detecting the moisture content of low-moisture shredded tobacco, comprising the following steps:

S1, shredded tobacco is sampled and weighed, take 100g shredded tobacco, mix the shredded tobacco evenly, take 25g sample by quartering method, weigh 10g sample with sample pan, and parallelize twice;

S2, cut tobacco drying, set the oven temperature to 120°C, move the sample tray into the oven after the temperature is stable, start timing when the temperature rises to 120°C, take it out immediately after drying for 4min;

S3, weighing, immediately weigh w1 with a balance after taking out the sample;

S4. Calculation of moisture content of shredded tobacco. Calculate the moisture content of shredded tobacco according to the weighing weight of shredded tobacco. When the absolute value of the difference between two parallel measurement results is not greater than 0.2%, take the average value of the measurement results, and the average value is the moisture content of shredded tobacco.

In order to better realize the technical solution of the present invention, the following technical measures are also adopted.

Further, in the step S4, the formula for calculating moisture content of shredded tobacco is:

Cut tobacco moisture=(10-w1)*100%.

A device for quickly detecting the moisture content of low-moisture shredded tobacco, comprising:

A silk drying device, which includes an oven and a feeding device;

Wherein, the feeding device is arranged on one side of the oven;

The feeding device includes a feeding device box, a sealing cover, a handle, a drive motor, a transmission shaft, a gear and a moving device, the feeding device box is arranged on one side of the oven, and the sealing cover is hinged on the feeding The top side of the device box, the handle is arranged on the top of the sealing cover, the moving device is arranged inside the feeding device box, the moving device runs through one side of the oven, and the driving The motor is arranged on the bottom side of the box body of the feeding device, one end of the transmission shaft is fixedly connected to the output end of the drive motor, and the other end of the transmission shaft passes through the box body of the feeding device from bottom to top. The bottom extends to the inside of the feeding device box, the gear is fixedly connected to the other end of the transmission shaft, and the gear meshes with one side of the moving device;

The mobile device includes a shell, a first heat insulation layer, a partition and a second heat insulation layer, one side of the shell is provided with a tooth groove, the top of the shell is provided with a groove, and the partition is arranged on Inside the groove, the first heat insulation layer is arranged on one side of the housing, the second heat insulation layer is arranged inside the groove, and the tooth groove is used to mesh with the gear ;

A control device, the control device includes a controller, a temperature sensor, a timer, an audible and visual alarm and a control device housing, the control device housing is arranged on the surface of the oven, the controller and the timing The detector is arranged inside the casing of the control device in turn, the sound and light alarm is arranged on the top of the oven, and the temperature sensor is arranged inside the oven.

Further, the temperature sensor is used to detect the temperature inside the oven.

Further, the moving device is used to slide inside the box body of the feeding device.

Further, the material of the first heat insulation layer and the second heat insulation layer is heat insulation cotton.

Further, the signal input end of the controller is respectively connected to the signal output end of the temperature sensor and the signal output end of the timer, and the signal output end of the controller is respectively connected to the sound and light alarm The signal input end of the drive motor is communicatively connected with the signal input end of the drive motor.

Compared with the prior art, the beneficial effect of the present invention is: a method and device for quickly detecting the moisture content of low-moisture shredded tobacco provided by the present invention can quickly dry the shredded tobacco and calculate the moisture content of the shredded tobacco without the need for drying and cooling steps , high detection accuracy, set up a drying device and a control device, after the quality inspector draws a certain amount of shredded tobacco online, put the sample into the drying device, the control device preheats the drying device and automatically controls the drying wire to enter the inside of the drying device , and automatically control the cut tobacco sample from the oven, avoid excessive heating of the cut tobacco, improve the detection accuracy, and reduce the detection time at the same time, which solves the problem of the long measurement cycle of the moisture content of the low-moisture cut tobacco in the prior art and the inability to timely feedback and control the online cut tobacco production. .

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the specific embodiments of the present invention are enumerated below.

Description of drawings

Fig. 1 is a schematic diagram of the positional relationship structure of the low-moisture shredded tobacco moisture content rapid detection device disclosed in the embodiment of the present invention;

Fig. 2 is a schematic diagram of the front section structure of the low-moisture shredded tobacco moisture content rapid detection device disclosed in the embodiment of the present invention;

Figure 3 is a schematic diagram of the enlarged structure at A in Figure 2;

Fig. 4 is a schematic plan view of the structure of the low-moisture shredded tobacco moisture content rapid detection device disclosed in the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a mobile device disclosed in an embodiment of the present invention;

Fig. 6 is a communication connection block diagram of a device for quickly detecting moisture content of low-moisture shredded tobacco disclosed in an embodiment of the present invention;

Fig. 7 is a schematic flowchart of a method for rapid detection of moisture content in low-moisture shredded tobacco disclosed in an embodiment of the present invention.

Reference signs: 100-silk drying device; 101-oven; 102-feeding device; 1021-feeding device box; 1022-sealing cover; 1023-handle; 1024-driving motor; 1025-transmission shaft; 1026-gear; -moving device; 10271-housing; 10272-gutter; 10273-groove; 10274-first insulation; 10275-partition; 10276-second insulation; - temperature sensor; 203 - timer; 204 - sound and light alarm; 205 - control device housing.

specific embodiment

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

With reference to shown in accompanying drawing 7, a kind of low-moisture shredded tobacco moisture content rapid detection method comprises the following steps:

S1, shredded tobacco is sampled and weighed, take 100g shredded tobacco, mix the shredded tobacco evenly, take 25g sample by quartering method, weigh 10g sample with sample pan, and parallelize twice;

S2, cut tobacco drying, set the oven temperature to 120°C, move the sample tray into the oven after the temperature is stable, start timing when the temperature rises to 120°C, take it out immediately after drying for 4min;

S3, weighing, immediately weigh w1 with a balance after taking out the sample;

S4, Calculation of moisture content of shredded tobacco. The moisture content of shredded tobacco is calculated according to the weighing weight of shredded tobacco. The formula for calculating the moisture content of shredded tobacco is: shredded tobacco moisture=10-w1*100%. Taking the average value, the average value is the moisture content of the shredded tobacco.

Comparison of rapid detection results of moisture content in low-moisture shredded tobacco:

serial number Rapid detection method (%) Two-hour oven standard method (%) error(%) ① 11.50 11.65 -0.15 ② 12.05 11.95 0.10 ③ 12.55 12.62 -0.07 ④ 13.06 12.88 0.18 ⑤ 13.45 13.60 -0.15

Utilize a kind of quick detection method of moisture content of low-moisture shredded tobacco provided by the present invention and industry standard two-hour oven method to carry out the detection result of moisture content of shredded tobacco, it can be seen that the measured value of the rapid detection method has less error than the measured value of the industry standard method , adopting this method can timely feedback and guide and regulate the moisture content of online shredded tobacco, which is convenient, fast, time-saving and labor-saving, and has high measurement accuracy.

Referring to accompanying drawings 1-6, the present invention also proposes a quick detection device for the moisture content of low-moisture shredded tobacco, which includes: a shred drying device 100, the shred drying device 100 includes an oven 101 and a feeding device 102, and the feeding device 102 is arranged in the oven One side of 101; feeding device 102 comprises feeding device casing 1021, sealing cover 1022, handle 1023, drive motor 1024, transmission shaft 1025, gear 1026 and moving device 1027, and feeding device casing 1021 is arranged on one side of baking oven 101, Sealing cover 1022 is hinged on the top side of feeding device casing 1021, and handle 1023 is arranged on the top of sealing cover 1022, and moving device 1027 is arranged on the inside of feeding device casing 1021, and moving device 1027 runs through one side of baking oven 101, and moving device 1027 is used for sliding inside the feeding device casing 1021, the driving motor 1024 is arranged on the bottom side of the feeding device casing 1021, one end of the transmission shaft 1025 is fixedly connected with the output end of the driving motor 1024, and the other end of the transmission shaft 1025 automatically The bottom of the feeding device box 1021 extends from bottom to top to the inside of the feeding device box 1021. The gear 1026 is fixedly connected to the other end of the transmission shaft 1025. The gear 1026 meshes with one side of the moving device 1027. The moving device 1027 includes a shell 10271, the first heat insulation layer 10274, the separator 10275 and the second heat insulation layer 10276, the side of the shell 10271 is provided with a tooth groove 10272, the top of the shell 10271 is provided with a groove 10273, and the separator 10275 is set in the groove 10273 Inside, the first heat insulation layer 10274 is arranged on one side of the casing 10271, the second heat insulation layer 10276 is arranged inside the groove 10273, the tooth groove 10272 is used for meshing with the gear 1026, the first heat insulation layer 10274 and the second insulation layer The material of the heat layer 10276 is heat insulation cotton, which is used to prevent the heat inside the oven 101 from overflowing and causing the temperature to drop. The control device 200 includes a controller 201, a temperature sensor 202, a timer 203, and an audible and visual alarm 204 And the control device housing 205, the control device housing 205 is arranged on the surface of the oven 101, the controller 201 and the timer 203 are arranged in the inside of the control device housing 205 in turn, the sound and light alarm 204 is arranged on the top of the oven 101, the temperature The sensor 202 is arranged inside the oven 101, the temperature sensor 202 is used to detect the temperature inside the oven 101, and the signal input end of the controller 201 communicates with the signal output end of the temperature sensor 202 and the signal output end of the timer 203 respectively connection, the signal output end of the controller 201 is connected to the signal input end of the sound and light alarm 204 and the signal input end of the drive motor 1024 respectively. Evenly, take the sample by the quartering method, and weigh the sample by the sample pan 10 g, twice in parallel, open the sealing cover 1022 by pulling the handle 1023, put the sample tray into the groove 10273, close the sealing cover 1022, start the oven 101, the temperature sensor 202 detects the temperature inside the oven 101 in real time, and Output the signal to the controller 201. After the temperature inside the oven 101 reaches 120°C, the controller 201 controls the drive motor 1024 to rotate forward. The drive motor 1024 drives the gear 1026 to rotate through the transmission shaft 1025. The gear 1026 drives the shell by meshing with the tooth groove 10272 10271 moves to the inside of the oven 101, and sends the sample tray into the inside of the oven 101. At the same time, the controller 201 reads the temperature detected by the temperature sensor 202 in real time. When the temperature inside the oven 101 reaches 120°C, the controller 201 starts Read the current time of the timer 203 in real time. After the drying time reaches 4 min, the controller 201 controls the reverse rotation, the drive motor 1024 drives the gear 1026 to rotate through the transmission shaft 1025, and the gear 1026 drives the shell 10271 to the oven by meshing with the tooth groove 10272 101 external movement, the sample tray is separated from the inside of the oven 101, and an alarm signal is sent to the sound and light alarm 204 at the same time. The inside of the tank 10273 is taken out and weighed immediately, and the moisture content of the shredded tobacco is calculated according to the weighing weight of the shredded tobacco. When the absolute value of the difference between the two parallel measurement results is not greater than 0.2%, the average value of the measurement results is taken, and the average value is the moisture content of the shredded tobacco. The method solves the problem in the prior art that the measurement period of the moisture content of low-moisture shredded tobacco is long, and the on-line shredded tobacco production cannot be fed back and controlled in time.

Specifically, before testing, the quality inspector obtains a sample of the cut tobacco through online sampling of cut tobacco, mixes the cut tobacco evenly, takes a sample by quartering, weighs 10 g of the sample with a sample tray, and weighs the sample twice in parallel, and pulls the handle 1023 to remove the sealed cover. 1022 is opened, the sample tray is put into the groove 10273, the sealing cover 1022 is closed, the oven 101 is started, the temperature sensor 202 detects the temperature inside the oven 101 in real time, and outputs the signal to the controller 201, the temperature inside the oven 101 After reaching 120°C, the controller 201 controls the drive motor 1024 to rotate forward, the drive motor 1024 drives the gear 1026 to rotate through the transmission shaft 1025, and the gear 1026 drives the shell 10271 to move to the inside of the oven 101 by meshing with the tooth groove 10272, and sends the sample tray into the oven 101, at the same time, the controller 201 reads the temperature detected by the temperature sensor 202 in real time. When the temperature inside the oven 101 reaches 120°C, the controller 201 starts to read the current time of the timer 203 in real time, and the drying time is After reaching 4min, the controller 201 controls the reverse rotation, the driving motor 1024 drives the gear 1026 to rotate through the transmission shaft 1025, and the gear 1026 drives the shell 10271 to move to the outside of the oven 101 by meshing with the tooth groove 10272, and the sample tray is separated from the inside of the oven 101. Simultaneously send an alarm signal to the sound and light alarm 204, the sound and light alarm 204 receives the signal and sends the sound and light alarm signal, and the quality inspector takes out the sample tray from the inside of the groove 10273 after the alarm signal and weighs it immediately, according to shredded tobacco Calculate the moisture content of cut tobacco by weighing the weight. When the absolute value of the difference between the two parallel measurement results is not greater than 0.2%, take the average value of the measurement results. Longer, unable to timely feedback and control the problem of online shredded tobacco production.

It should be noted that the specific models and specifications of the driving motor 1024, the controller 201, the temperature sensor 202, the timer 203 and the sound and light alarm 204 need to be selected according to the actual specifications of the device, and the specific calculation method for the selection is There is prior art in this field, so it will not be described in detail.

The power supply and principle of drive motor 1024, controller 201, temperature sensor 202, timer 203 and sound and light alarm 204 are clear to those skilled in the art, and will not be described in detail here.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (3)

1. a low-moisture shredded tobacco moisture content rapid detection method, is characterized in that, comprises the following steps: S1, shredded tobacco is sampled and weighed, take 100g shredded tobacco, mix the shredded tobacco evenly, take 25g sample by quartering method, weigh 10g sample with sample pan, and parallelize twice; S2, cut tobacco drying, set the oven temperature to 120°C, move the sample plate into the oven after the temperature is stable, start timing when the temperature rises to 120°C, and take it out immediately after drying for 4 minutes; S3, weighing, weigh w1g with a balance immediately after taking out the sample; S4, calculation of moisture content of shredded tobacco, calculate the moisture of shredded tobacco according to the weighing weight of shredded tobacco, when the absolute value of the difference between the two parallel measurement results is not more than 0.2%, take the average value of the measurement results, and the average value is the moisture content of shredded tobacco; A quick detection device for moisture content of low-moisture shredded tobacco used in the rapid detection method for moisture content of low-moisture shredded tobacco, comprising: A silk drying device (100), the silk drying device (100) comprising an oven (101) and a feeding device (102); Wherein, the feeding device (102) is arranged on one side of the oven (101); The feeding device (102) includes a feeding device box (1021), a sealing cover (1022), a handle (1023), a driving motor (1024), a transmission shaft (1025), a gear (1026) and a moving device (1027), The feeding device box (1021) is arranged on one side of the oven (101), the sealing cover (1022) is hinged on the top side of the feeding device box (1021), and the handle (1023) Set on the top of the sealing cover (1022), the moving device (1027) is set inside the feeding device box (1021), and the moving device (1027) penetrates one side of the oven (101) , the driving motor (1024) is arranged on the bottom side of the feeding device box (1021), one end of the transmission shaft (1025) is fixedly connected to the output end of the driving motor (1024), and the transmission The other end of the shaft (1025) runs through the bottom of the feeding device box (1021) from bottom to top and extends to the inside of the feeding device box (1021), the gear (1026) and the transmission shaft (1025 ) is fixedly connected to the other end, and the gear (1026) meshes with one side of the moving device (1027); The mobile device (1027) includes a casing (10271), a first heat insulation layer (10274), a partition (10275) and a second heat insulation layer (10276), and teeth are provided on one side of the casing (10271) Groove (10272), the top of the housing (10271) is provided with a groove (10273), the partition (10275) is arranged inside the groove (10273), the first heat insulation layer (10274) It is arranged on one side of the casing (10271), the second heat insulation layer (10276) is arranged inside the groove (10273), and the tooth groove (10272) is used to communicate with the gear (1026) Engage; The material of the first heat insulation layer (10274) and the second heat insulation layer (10276) is heat insulation cotton; A control device (200), the control device (200) includes a controller (201), a temperature sensor (202), a timer (203), an audible and visual alarm (204) and a control device housing (205), the The control device casing (205) is arranged on the surface of the oven (101), and the controller (201) and the timer (203) are sequentially arranged inside the control device casing (205), so The sound and light alarm (204) is set on the top of the oven (101), and the temperature sensor (202) is set inside the oven (101); The temperature sensor (202) detects the temperature inside the oven (101) in real time, and outputs a signal to the controller (201), and when the temperature inside the oven (101) reaches 120°C, the control The device (201) controls the drive motor (1024) to rotate forward, the drive motor (1024) drives the gear (1026) to rotate through the transmission shaft (1025), and the gear (1026) communicates with the gear The engagement of the slots (10272) drives the housing (10271) to move inside the oven (101), sending the sample tray into the inside of the oven (101), and at the same time, the controller (201) reads the The temperature detected by the temperature sensor (202) in real time, when the temperature inside the oven (101) reaches 120°C, the controller (201) starts to read the current time of the timer (203) in real time, After the drying time reaches 4 minutes, the controller (201) controls the reverse rotation, the drive motor (1024) drives the gear (1026) to rotate through the transmission shaft (1025), and the gear (1026) passes through the The meshing of the tooth grooves (10272) drives the outer shell (10271) to move to the outside of the oven (101), and the sample tray is separated from the inside of the oven (101). 2. The method for quickly detecting the moisture content of low-moisture shredded tobacco according to claim 1, characterized in that: the moving device (1027) is used to slide inside the feeding device box (1021). 3. A method for quickly detecting the moisture content of low-moisture shredded tobacco according to claim 1, characterized in that: the signal input terminal of the controller (201) is connected to the signal output terminal of the temperature sensor (202) and The signal output terminal of the timer (203) is connected in communication, and the signal output terminal of the controller (201) is respectively connected to the signal input terminal of the sound and light alarm (204) and the signal of the driving motor (1024) Input communication connection.

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