阅读说明：本技术 在线自动调控片烟结构的方法及打叶复烤加工方法 (Method for automatically regulating and controlling structure of tobacco lamina on line and threshing and redrying processing method ) 是由 王宝林 牛洋洋 刘向真 刘茂林 赵森森 李龙飞 田涛 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种在线自动调控片烟结构的方法及打叶复烤加工方法,其中,该在线自动调控片烟结构的方法包括建立烟片结构数据模型；通过筛分装置对来料烟片进行筛分,以分离超大片；对超大片进行剪切；将剪切后的烟片与分离出超大片后的剩余烟片进行混合；对混合后的烟片进行在线检测,获得实际检测数据；将实际检测数据与烟片结构数据模型对比,获得数据偏差；根据数据偏差调整筛分装置中筛辊的转速。本发明提供的在线自动调控片烟结构的方法及打叶复烤加工方法,实现了对片烟结构进行实时在线自动调控,提升了片烟结构的均质化水平,减少了烟片造碎。(The invention discloses a method for automatically regulating and controlling a tobacco flake structure on line and a threshing and redrying processing method, wherein the method for automatically regulating and controlling the tobacco flake structure on line comprises the steps of establishing a tobacco flake structure data model; screening the incoming tobacco flakes through a screening device to separate oversized flakes; shearing the oversized slices; mixing the cut tobacco flakes with the residual tobacco flakes after the oversized flakes are separated; carrying out online detection on the mixed tobacco flakes to obtain actual detection data; comparing the actual detection data with the tobacco flake structure data model to obtain data deviation; and adjusting the rotating speed of a screen roller in the screening device according to the data deviation. The method for automatically regulating the structure of the tobacco lamina on line and the threshing and redrying processing method provided by the invention realize real-time online automatic regulation and control of the structure of the tobacco lamina, improve the homogenization level of the structure of the tobacco lamina and reduce the breakage of tobacco flakes.)

1. A method for automatically regulating and controlling a tobacco lamina structure on line is characterized by comprising the following steps:

establishing a tobacco flake structure data model;

screening the incoming tobacco flakes through a screening device to separate oversized flakes;

shearing the oversized slices;

mixing the cut tobacco flakes with the residual tobacco flakes after the oversized flakes are separated;

carrying out online detection on the mixed tobacco flakes to obtain actual detection data;

comparing the actual detection data with the tobacco flake structure data model to obtain data deviation;

and adjusting the rotating speed of a screen roller in the screening device according to the data deviation.

2. The method of claim 1, wherein the data model comprises a preset ultra-large slice rate, a medium slice rate, a scrap rate, a uniformity coefficient and a tobacco slice characteristic dimension.

3. The method for automatically regulating and controlling the structure of the tobacco lamina according to claim 2, wherein the online detection of the structure of the mixed tobacco lamina is performed to obtain actual detection data, and the method specifically comprises the following steps:

detecting the characteristic size of the mixed tobacco flakes;

obtaining the ultra-large flake rate, the medium flake rate and the powder breaking rate of the mixed tobacco flakes according to the characteristic size of the mixed tobacco flakes;

and obtaining the uniformity coefficient of the mixed tobacco flakes according to the ultra-large flake rate, the medium flake rate and the powder rate.

4. The method for automatically controlling the structure of a tobacco lamina according to claim 3, wherein the step of comparing the actual detection data with the tobacco lamina structure data model to obtain a data deviation specifically comprises:

and respectively comparing the ultra-large flake rate, the medium flake rate and the powder rate of the mixed tobacco flakes with the preset ultra-large flake rate, the medium flake rate and the powder rate to obtain ultra-large flake rate deviation, medium flake rate deviation and powder rate deviation.

5. The method for automatically regulating and controlling the structure of the sheet tobacco on line according to claim 4, wherein the adjusting the rotating speed of a screen roller in a screening device according to the data deviation specifically comprises:

judging whether the difference value between the ultra-large slice rate and/or the large slice rate of the mixed tobacco slices and the corresponding preset ultra-large slice rate and/or large slice rate exceeds a set threshold value or not;

if yes, reducing the rotation speed of the screen roller;

if not, the rotation speed of the screen roller is increased.

6. The method for automatically regulating and controlling the structure of the sheet tobacco on line according to claim 1, wherein the screening device comprises a frame, a conveyor belt is arranged at the bottom of the frame, a feeding hole and a first discharging hole are respectively arranged at two ends of the frame in the conveying direction, and a second discharging hole is also arranged at one end of the frame, which is positioned at the first discharging hole;

the sieve roller interval is provided with a plurality ofly, and is a plurality of the sieve roller rotates to be set up in the frame, every all be provided with on the sieve roller and dial the tooth.

7. The method of claim 1, wherein the ultra-large pieces are sheared by a double-roll differential shear.

8. A threshing and redrying processing method is characterized by comprising the following steps:

pretreating incoming tobacco flakes;

threshing and stem removing are carried out on the incoming tobacco flakes;

automatically regulating the structure of the tobacco flakes by adopting the method for automatically regulating the structure of the tobacco flakes on line according to any one of claims 1 to 7;

and (5) redrying the regulated tobacco flakes.

Technical Field

The invention relates to the technical field of tobacco processing, in particular to a method for automatically regulating and controlling a tobacco lamina structure on line and a threshing and redrying processing method.

Background

The quality of the tobacco flake structure in the threshing and redrying process is an important index for measuring the processing level and also an important factor for determining the cut tobacco shred structure, and the tobacco shred structure is a key for influencing the cigarette rolling quality (such as indexes of cigarette density, single cigarette weight, empty head rate, end cut tobacco and the like) and the stability of the cigarette rolling quality, so that the continuous stable and homogeneous production of the tobacco leaves with reasonable structures is the development direction of threshing and redrying processing, and has important significance for stabilizing the quality of cigarette products.

At present, the proportion of the finished product sheet tobacco produced by domestic redrying processing enterprises is unreasonable, the large sheet tobacco is often represented as a large amount, especially the proportion of the overlarge sheet tobacco is high, the middle sheet tobacco is few, certain gap still exists between the development demand of Chinese style cigarettes in China and the development demand of the cigarette products concentrated to large brands, and the stability control of the quality of the cigarette products is not facilitated; particularly, with the rapid development of fine-count and medium-fine-count cigarettes in cigarette enterprises, higher requirements are put forward on the control of the structure of the punched tobacco lamina.

Disclosure of Invention

The invention aims to provide a method for automatically regulating and controlling a tobacco flake structure on line and a threshing and redrying processing method, so that the tobacco flake structure can be automatically regulated and controlled on line in real time, the homogenization level of the tobacco flake structure is improved, and the breakage is reduced.

The invention provides a method for automatically regulating and controlling a tobacco lamina structure on line, which comprises the following steps:

establishing a tobacco flake structure data model;

screening the incoming tobacco flakes through a screening device to separate oversized flakes;

shearing the oversized slices;

mixing the cut tobacco flakes with the residual tobacco flakes after the oversized flakes are separated;

carrying out online detection on the mixed tobacco flakes to obtain actual detection data;

comparing the actual detection data with the tobacco flake structure data model to obtain data deviation;

and adjusting the rotating speed of a screen roller in the screening device according to the data deviation.

The method for automatically regulating and controlling the structure of the tobacco flakes on line as described above, wherein preferably, the data model includes a preset ultra-large flake rate, a preset medium flake rate, a preset scrap rate, a preset uniformity coefficient and a preset tobacco flake characteristic dimension.

The method for automatically regulating and controlling the structure of the sheet tobacco on line as described above, wherein preferably, the step of performing on-line detection on the structure of the mixed sheet tobacco to obtain actual detection data specifically includes:

detecting the characteristic size of the mixed tobacco flakes;

obtaining the ultra-large flake rate, the medium flake rate and the powder breaking rate of the mixed tobacco flakes according to the characteristic size of the mixed tobacco flakes;

and obtaining the uniformity coefficient of the mixed tobacco flakes according to the ultra-large flake rate, the medium flake rate and the powder rate.

The method for automatically controlling the structure of the tobacco lamina on line as described above, wherein preferably, the comparing the actual detection data with the tobacco lamina structure data model to obtain the data deviation specifically includes:

and respectively comparing the ultra-large flake rate, the medium flake rate and the powder rate of the mixed tobacco flakes with the preset ultra-large flake rate, the medium flake rate and the powder rate to obtain ultra-large flake rate deviation, medium flake rate deviation and powder rate deviation.

The method for automatically regulating and controlling the structure of the sheet tobacco on line as described above, wherein preferably, the adjusting the rotation speed of the screen roller in the screening device according to the data deviation specifically includes:

judging whether the difference value between the ultra-large slice rate and/or the large slice rate of the mixed tobacco slices and the corresponding preset ultra-large slice rate and/or large slice rate exceeds a set threshold value or not;

if yes, reducing the rotation speed of the screen roller;

if not, the rotation speed of the screen roller is increased.

The method for automatically regulating and controlling the structure of the sheet tobacco on line as described above, wherein preferably, the screening device includes a frame, a conveyor belt is arranged at the bottom of the frame, a feed inlet and a first discharge outlet are respectively arranged at two ends of the frame in the conveying direction, and a second discharge outlet is further arranged at one end of the frame, which is located at the first discharge outlet;

the sieve roller interval is provided with a plurality ofly, and is a plurality of the sieve roller rotates to be set up in the frame, every all be provided with on the sieve roller and dial the tooth.

The method for on-line automatic conditioning of a sheet tobacco structure as described above, wherein preferably the oversized sheet is sheared by a double-roll differential shear.

The invention also provides a threshing and redrying processing method, which comprises the following steps:

pretreating incoming tobacco flakes;

threshing and stem removing are carried out on the incoming tobacco flakes;

the method for automatically regulating the structure of the tobacco flakes on line provided by the invention is adopted to automatically regulate the structure of the tobacco flakes;

and (5) redrying the regulated tobacco flakes.

The method for automatically regulating the structure of the tobacco lamina on line and the threshing and redrying processing method provided by the invention realize real-time online automatic regulation and control of the structure of the tobacco lamina, improve the homogenization level of the structure of the tobacco lamina and reduce the breakage of tobacco flakes.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a flow chart of a method for automatically controlling a structure of a tobacco lamina on line according to an embodiment of the present invention;

fig. 2 is a flowchart of a threshing and redrying processing method according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

As shown in fig. 1, an embodiment of the present invention provides a method for automatically regulating and controlling a structure of a tobacco lamina on line, which includes the following steps:

and step S1, establishing a tobacco flake structure data model. The data model may be implemented based on a computer system.

The data model specifically comprises a preset ultra-large fragment rate, a medium fragment rate, a powder rate, a uniformity coefficient and a tobacco flake characteristic size. In one embodiment, the ultra-large fraction is less than 7.5%, the large fraction (including ultra-large fraction) is less than 40%, the medium fraction is greater than or equal to 80%, the fines fraction is less than 0.5%, and the uniformity coefficient is 2.5. Wherein the characteristic dimension of the super-large piece is more than 40mm multiplied by 40mm, the characteristic dimension of the large piece is 25.4mm multiplied by 25.4 mm-40 mm multiplied by 40mm, the characteristic dimension of the middle piece is 12.7mm multiplied by 12.7 mm-25.4 mm multiplied by 25.4mm, the characteristic dimension of the fragment is less than 2.36mm multiplied by 2.36mm, and the characteristic dimension of other tobacco pieces is 2.36mm multiplied by 2.36 mm-12.7 mm multiplied by 12.7 mm.

And step S2, screening the incoming tobacco flakes through a screening device to separate oversized flakes.

The screening device can comprise a rack, a conveyor belt is arranged at the bottom of the rack, a feeding hole and a first discharging hole are respectively formed in two ends of the rack in the conveying direction, and a second discharging hole is further formed in one end, located at the first discharging hole, of the rack; the sieve roller interval is provided with a plurality ofly, and a plurality of sieve rollers rotate and set up in the frame, all is provided with on every sieve roller and dials the tooth.

When coming material smoke sheets enter the screen rollers from the feeding hole, the screen rollers continuously rotate, the smoke sheets can be gradually dispersed through the stirring teeth on the screen rollers, and the oversized smoke sheets can be kept above each screen roller and are transmitted backwards through each screen roller until the oversized smoke sheets are transmitted to the first discharging hole; and the smoked sheet except that the super large piece is then through stirring of stirring the tooth from falling to the conveyer belt between two adjacent sieve rollers to export to the second discharge gate through the conveyer belt, realized the separation to the super large piece from this.

And step S3, shearing the oversized sheet. Wherein the ultra-large sheets can be sheared by a double-roll differential shearing machine.

And step S4, mixing the cut tobacco flakes with the residual tobacco flakes after the oversized tobacco flakes are separated.

And step S5, carrying out online detection on the mixed tobacco flake structure to obtain actual detection data.

Wherein, specifically include:

and step S51, detecting the characteristic size of the mixed tobacco flakes.

And step S52, obtaining the ultra-large flake rate, the medium flake rate and the powder rate of the mixed tobacco flakes according to the characteristic sizes of the mixed tobacco flakes.

And step S53, obtaining the uniformity coefficient of the mixed tobacco flakes according to the ultra-large flake rate, the medium flake rate and the powder rate.

And step S6, comparing the actual detection data with the tobacco flake structure data model to obtain data deviation.

And comparing the ultra-large flake rate, the medium flake rate and the powder rate of the mixed tobacco flakes with the preset ultra-large flake rate, the preset medium flake rate and the preset powder rate respectively to obtain ultra-large flake rate deviation, medium flake rate deviation and powder rate deviation.

And step S7, adjusting the rotating speed of the screen roller in the screening device according to the data deviation.

The method specifically comprises the following steps:

and judging whether the difference between the ultra-large slice rate and/or the large slice rate of the mixed tobacco slices and the corresponding preset ultra-large slice rate and/or large slice rate exceeds a set threshold value. In this example, the set threshold was 4.0%

If so, the rotation speed of the screen roller is reduced.

If not, the rotation speed of the screen roller is increased.

In a specific embodiment, the test is performed by using tobacco leaves of grade C3F in the area of helonin as a test material and using the existing screening method and the method for automatically controlling the structure of the tobacco lamina on line provided in this embodiment, and the following data statistics are obtained (table one):

watch 1

The control sample in table one is the data result obtained by directly mechanically sieving the incoming tobacco flakes, and the test sample in table one is the data result obtained by sieving the tobacco flakes after adjusting the rotation speed of the sieve roller.

Wherein, the test data in table one shows that the deviation of each fraction is the difference between the reference sample or the test sample and the structure requirement, namely the deviation of the ultra-large fraction obtained by the existing screening method is 7.7%, the deviation of the large fraction is 4.8%, the deviation of the medium fraction is 0.6%, and the deviation of the powder fraction is-0.09%; the deviation of the ultra-large fraction obtained by the method of the embodiment is-3.49%, the deviation of the large fraction is-9.4%, the deviation of the medium fraction is 8.7% and the deviation of the powder fraction is-0.08%.

According to the table one, the deviation of the oversize fraction obtained by the existing screening method is 7.7%, the deviation of the oversize fraction is 4.8%, and both the deviations exceed the set threshold value of 4.0%, which indicates that the screening effect of the existing screening method is not good, and the screening needs to be carried out again, and at this time, the rotating speed of the screen roller can be reduced, so that more oversize fractions and oversize fractions can be effectively screened. The ultra-large rate deviation obtained by the method provided by the embodiment is-3.49%, the large rate deviation is-9.4%, and the ultra-large rate deviation is far lower than the set threshold value of 4.0%, which indicates that the structural characteristics of the screened tobacco flakes are relatively uniform, and the powder rate is 0.42%, and within 0.5% of the structural requirement, which indicates that the tobacco flakes are effectively reduced in size.

As shown in table one, the uniformity coefficient of the smoked sheet obtained by the method provided by this embodiment is 2.41, which is close to the preset uniformity coefficient of 2.50, and is much higher than the uniformity coefficient of 0.85 of the control sample, which indicates that the uniformity of the structural characteristics of the smoked sheet obtained by the method provided by this embodiment is better, and the ratios of the smoked sheets of various specifications are also close to the preset ratios required by the structure.

As shown in fig. 2, an embodiment of the present invention further provides a threshing and redrying processing method, which includes the following steps:

and step S10, preprocessing the incoming tobacco flakes.

Step S20, threshing and stem removing are carried out on the incoming tobacco flakes.

And step S30, automatically regulating the tobacco flake structure by adopting the method for automatically regulating the tobacco flake structure on line provided by any embodiment of the invention.

And step S40, redrying the regulated tobacco flakes.

The method for automatically regulating the structure of the tobacco lamina on line and the threshing and redrying processing method provided by the embodiment of the invention realize real-time online automatic regulation and control of the structure of the tobacco lamina, improve the homogenization level of the structure of the tobacco lamina and reduce the breakage of tobacco flakes.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.