CN217429235U - Device for controlling discharging uniformity of slice yarn cabinet - Google Patents
Device for controlling discharging uniformity of slice yarn cabinet Download PDFInfo
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- CN217429235U CN217429235U CN202221015573.8U CN202221015573U CN217429235U CN 217429235 U CN217429235 U CN 217429235U CN 202221015573 U CN202221015573 U CN 202221015573U CN 217429235 U CN217429235 U CN 217429235U
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Abstract
The utility model provides a device for controlling the discharging uniformity of a thin slice silk cabinet, which comprises a thin slice silk cabinet for storing thin slice silk materials, a bottom belt arranged at the bottom of the thin slice silk cabinet, a bottom belt motor for driving the bottom belt to output the materials from the thin slice silk cabinet, a material level detector for acquiring material layer height signals of the materials in the thin slice silk cabinet and a PLC control module for controlling the frequency of the bottom belt motor to be adjusted; the device further comprises a bottom belt motor start-stop frequency detection device and a slice wire mixing electronic scale material level detection device. The utility model has the advantages that use this device to adjust the bottom tape motor frequency, can realize that the material evenly goes out of the cabinet, can effectively improve the thin slice silk and mix the homogeneity, guarantee the finished product and inhale flavor style uniformity, reduce and mix the inhomogeneous taste style difference that brings because of the thin slice silk to avoided equipment frequently to open and stop and cause material jam, water dispersion and make garrulous.
Description
Technical Field
The utility model relates to a tobacco processing technology field, specific theory relates to a device of control thin slice silk cabinet ejection of compact homogeneity.
Background
The addition of the shredded flakes plays an important role in improving the structure and filling capacity of the shredded tobacco, reducing tar release amount and tobacco leaf consumption, reducing certain harmful components of smoke and improving the effective utilization rate of the tobacco leaves.
At present, the output of the thin slice shreds from the cabinet is controlled as the output of the cut stems and the expanded shreds from the cabinet, the set frequency is adopted for outputting the thin slice shreds from the cabinet, and the speed of the bottom strips of the cabinet is controlled by adjusting the set value according to the experience of operators in the process, so that the output of the cabinet is controlled. But the indexes of the thin slice tobacco, such as friction coefficient, bulk density, moisture absorption and moisture release rate, and the like, are greatly different from the common tobacco because of the production process. The static friction coefficient of the thin slice threads is 0.31-0.46, and the static friction coefficient of the tobacco threads is 0.48-0.64, so that the thin slice threads are easier to move mutually when stacked than common tobacco threads, namely the height of a material layer is easier to change when the thin slice threads are taken out of a cabinet. The bulk density of the slice threads is less than or equal to that of the tobacco threads, the average volume of the slice threads is less than 60 percent of that of the tobacco threads, and the weight of the slice threads is less than that of the tobacco threads under the same volume, so that if the materials in the slice thread blending electronic scale limiting groove are below a low material level for a long time, the flow fluctuation of the slice thread blending electronic scale is easily caused, and the blending uniformity is influenced; if the material exceeds the high material level for a long time, the starting and stopping frequency of the equipment is increased, the equipment is greatly damaged, the service life is influenced, the material blockage is easily caused, and the batch quality is influenced. Meanwhile, the moisture loss rate of the shredded tobacco is much faster than that of the shredded tobacco, and frequent starting and stopping of the shredded tobacco can increase the moisture loss in the transportation process and generate a large amount of broken tobacco. If the thin slice shred is taken out of the cabinet and controlled according to the control method of blending the original stem shreds and the expanded shreds out of the cabinet, the situation of blending flow fluctuation caused by uneven delivery of the thin slice shred from the cabinet is easy to happen. The blending abnormality of the thin slices can be caused by uneven discharge of the thin slices from a cabinet, the structure and the filling capacity of the thin slices are influenced, the smoke components are changed, and the sensory quality of cigarettes is greatly influenced. And once the blending precision exceeds the judgment standard range, a large amount of manpower and material resources are required to be invested for evaluation and identification, and even the degraded tobacco shreds are degraded and blended again in serious cases, so that great economic loss is caused to factories.
Therefore, the control of the uniformity of the discharge of the slice shred cabinet has important significance on the inherent quality of cigarettes.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a device of control thin slice silk cabinet ejection of compact homogeneity opens the frequency and opens and stop the real-time regulation thin slice silk cabinet bottom band motor frequency according to bed of material height and bottom band motor, guarantees the homogeneity that the thin slice silk goes out the cabinet volume.
The utility model provides a technical problem adopt following technical scheme:
a device for controlling the discharging uniformity of a slice yarn cabinet comprises the slice yarn cabinet, a bottom belt motor, a material level detector and a PLC control module;
the slice yarn cabinet is used for storing slice yarn materials, and a bottom belt is arranged at the bottom of the slice yarn cabinet;
the bottom belt motor is used for driving a bottom belt to output materials from the slice silk cabinet, and the bottom belt motor is a variable frequency motor and can control the speed of material output;
the material level detector is arranged above the material of the discharge end cabinet of the slice yarn cabinet and is used for collecting a material layer height signal of the material in the slice yarn cabinet and sending the material layer height signal to the PLC control module;
and the PLC control module is used for receiving the material layer height signal and controlling the bottom belt motor to adjust the frequency of the bottom belt motor.
Furthermore, the material level detector is arranged at the position vertical to the width center of the discharging end cabinet of the slice yarn cabinet.
Furthermore, the material level detector is 450mm-550mm away from the port and 1720mm-1780mm away from the cabinet bottom.
Furthermore, the PLC control module is provided with a stacking time t for delaying and adjusting the frequency of the bottom belt motor and improving the accuracy of adjusting the frequency of the bottom belt motor.
Further, the stacking time t is the time t0 required by the material to be transported from the position of the material level detector to the discharge port when the frequency of the bottom belt motor is the set frequency f 0; or
And the stacking time t is the time t3 required for conveying the material from the position of the material level detector to the discharge port when the bottom belt motor operates according to the adjusted front frequency f 3.
Furthermore, a bottom belt motor start-stop frequency detection device is further arranged and used for collecting start-stop frequency signals of the bottom belt motor and sending the start-stop frequency signals to the PLC control module.
Furthermore, a slice silk blending electronic scale material level detection device is further arranged and used for detecting the material layer height of the materials in the limiting groove of the blending electronic scale and sending material layer height signals of the materials in the limiting groove of the blending electronic scale to the PLC control module.
Furthermore, the slice silk blending electronic scale material level detection device is a high material level detection photoelectric tube, a middle material level detection photoelectric tube and a low material level detection photoelectric tube which are sequentially arranged from high to low in a blending electronic scale limiting groove.
Further, the level detector is an ultrasonic level detector or a laser level detector.
Furthermore, the device is also provided with an analog input module, wherein the analog input module is arranged in a frequency converter of the material level detector or the bottom belt motor and is used for receiving a material layer height analog signal sent by the material level sensor, converting the material layer height analog signal into a digital signal and sending the digital signal to the PLC control module.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the material level detector is used for monitoring the material layer height of the slice silk material in real time, and the automatic frequency modulation of the band motor at the bottom of the slice silk cabinet is controlled through the material layer height, so that the material is uniformly discharged from the cabinet, the blending uniformity of the slice silk can be effectively improved, the identity of the taste style of a finished product is ensured, and the taste style difference caused by the non-uniform blending of the slice silk is reduced.
2. A bottom belt motor starting and stopping frequency detection device is added, the frequency of the bottom belt motor is further adjusted, and material blockage, water dispersion and breakage caused by frequent starting and stopping of equipment are avoided.
3. A material level detection device of the flake silk blending electronic scale is added to further adjust the frequency of the bottom belt motor, so that the blending uniformity of the flake silk is improved.
4. And the stacking time is set, so that the accuracy of adjusting the frequency of the bottom belt motor is improved.
Drawings
Fig. 1 is a schematic structural view of the device for controlling the discharging uniformity of the slice silk cabinet of the utility model.
Fig. 2 is a schematic view of the bottom structure of the bottom belt of the present invention.
Fig. 3 is an operation flow chart of the utility model for controlling the discharging uniformity of the slice silk cabinet.
In the figure: 1-slice silk cabinet; 2-a bottom tape; 21-a metal backing strip; 22-a proximity switch; 3-bottom belt motor; 4-a level detector; 5-a PLC control module; 6-a starting and stopping frequency detection device of the bottom belt motor; 7-blending the thin slice silk into an electronic scale; 71-high level detection photocell; 72-middle material level detecting photoelectric tube; 73-low level detection photocell; 8-analog input module; 9-thin sheet yarn.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples.
The utility model provides a device of control thin slice silk cabinet ejection of compact homogeneity, as shown in fig. 1, including thin slice silk cabinet 1, end area 2, end area motor 3, material level detector 4 and PLC control module 5. The slice yarn cabinet 1 is used for storing slice yarn 9 materials, and the slice yarn 9 enters the slice yarn cabinet 1 for storage after being processed through a production line and waits for use. When the thin sheet wire 9 needs to be used, the thin sheet wire 9 is output through the bottom belt 2 arranged at the bottom of the cabinet. The bottom belt 2 drives the bottom belt motor 3 to move, the bottom belt 2 bears the thin sheet wires 9, the bottom belt motor 3 is a variable frequency motor and is provided with a frequency converter, and the frequency of the bottom belt motor 3 can be adjusted, so that the running speed of the bottom belt 2 is adjusted, and the adjustment of the material output speed is realized. The discharge end is the discharge end cabinet of slice silk cabinet 1, and end area 2 moves as shown by the arrow in fig. 1, and the motion of end area 2 is followed the discharge gate of discharge end cabinet and is come out through end area 2 to slice silk 9, material level detector 4 sets up in the material top of 1 discharge end cabinet of slice silk cabinet for gather the bed of material height signal of material in 1 slice silk cabinet, and send bed of material height signal to PLC control module 5. The level detector 4 may be an ultrasonic level detector 4, or a conventionally used level detector 4 such as a laser level detector 4 may be used. The sheet threads 9 are easier to move mutually when stacked than common cut tobacco, namely the material layer height is easier to change when the sheet threads are taken out of a cabinet, the material level detector 4 needs to be arranged near a discharge port, so that the detection accuracy is improved, but a rake nail is arranged at the discharge port, so that a certain distance is needed to be kept away from the discharge port; the height of the materials in the cabinet at the highest and lowest positions is also required to be measured. After the material level detector 4 is installed, the zero position of the material level detector 4 needs to be adjusted to adapt to different installation heights, and when the non-laminar yarn 9 is arranged, the position irradiated from the material level detector 4 to the bottom belt 2 is set to be the zero position, namely, the position is confirmed to be the lowest point. Preferably, the material level detector 4 is arranged at the vertical position of the width center of the discharge end cabinet of the slice thread cabinet 1, namely the middle position in the width direction of the discharge end cabinet, and is 450mm-550mm away from the port of the discharge end cabinet and 1720mm-1780mm away from the cabinet bottom. PLC control module 5 is used for receiving bed of material height signal to according to bed of material height, the frequency of the preliminary adjustment bottom tape motor 3 of converter of control bottom tape motor is f, when the bed of material height is higher, reduces bottom tape motor 3's frequency, makes the speed of bottom tape 2 transported substance slow down, when the bed of material height is lower, improves bottom tape motor 3's frequency, makes the speed of bottom tape 2 transported substance accelerate, keeps 1 ejection of compact of slice silk cabinet even. The material level detector 4 usually outputs 4-20mA analog quantity signals, in order to facilitate control, a digital input port of the PLC control module 5 is fully utilized, and an analog quantity input module 8 is further arranged and used for receiving the material layer height analog quantity signals sent by the material level detector 4, converting the material layer height analog quantity signals into digital signals and sending the digital signals to the PLC control module 5. The analog quantity input module 8 can be arranged in the material level detector 4 and is integrated with the material level detector 4, so that the material level detector 4 directly outputs a material layer height digital signal; or can be arranged in the frequency converter of the bottom belt motor 3 and is installed in a sub-station box of the frequency converter nearby, so that later maintenance is facilitated.
In order to avoid material blockage, water dispersion and breakage caused by frequent starting and stopping of the equipment, a bottom belt motor starting and stopping frequency detection device 6 can be additionally arranged and used for collecting starting and stopping frequency signals of the bottom belt motor 3 and sending the starting and stopping frequency signals to the PLC control module 5, for example, whether the bottom belt motor 3 is frequently started and stopped or not can be judged by detecting the on-off frequency of the feeder, a control curve can be generated, and the starting and stopping rules of the reaction equipment are more visual. If the bottom belt motor 3 is started and stopped frequently, the frequency of the bottom belt motor 3 can be reduced to be f 'through the PLC control module 5, and if the frequency of the bottom belt motor 3 is stopped and stopped less frequently, the frequency of the bottom belt motor 3 can be improved to be f' through the PLC control module 5. Preferably, when the starting and stopping frequency is more than or equal to 2 times/minute, further reducing the frequency f after the initial adjustment of the bottom belt motor 3 by 1% to obtain f'; when the starting and stopping frequency is less than or equal to 1 time/minute and less than 2 times/minute, the frequency f after the preliminary adjustment of the bottom belt motor 3 is kept unchanged, and f' is equal to f; and when the starting and stopping frequency is less than 1 time/minute, further increasing the frequency f after the preliminary adjustment of the bottom belt motor 3 by 2% to obtain f'.
The bulk density of the thin sheet wires 9 is less than that of the cut tobacco, the quantity-limited tank incoming material of the thin sheet wire mixing electronic scale 7 is reduced, the influence on the mixing uniformity is large, the quantity-limited tank incoming material of the thin sheet wire mixing electronic scale 7 is too much, the equipment is frequently started and stopped, and a material level detection device of the thin sheet wire mixing electronic scale can be added. The material level detection photoelectric tube can reflect the amount of material coming in a certain period of time by the material shading of the slice silk with different heights in a certain period of time, for example, 30 s. After the material level detection device of the flake silk blending electronic scale detects the material layer height of the material in the limiting groove of the flake silk blending electronic scale 7, the material layer height signal is sent to the PLC control module 5, and the frequency of the bottom belt motor 3 is adjusted to be f through the PLC control module 5. Preferably, when the material in the limiting groove of the slice silk blending electronic scale 7 blocks the high material level detection photoelectric tube 71, the frequency f after the preliminary adjustment of the bottom belt motor 3 or the frequency f 'after the further adjustment is further reduced by 1% to obtain f'; when the material in the limiting groove of the electronic balance 7 for blending the slice silk covers the middle material level detection photoelectric tube 72 and does not cover the high material level detection photoelectric tube 71, the frequency f after the preliminary adjustment of the bottom belt motor 3 or the frequency f 'after the further adjustment is kept unchanged, wherein f' is equal to f or f 'is equal to f'; when the material in the slice silk blending electronic scale 7 limit tank only shelters the photoelectric tube 73 for low material level detection, the frequency f after the preliminary adjustment of the bottom belt motor 3 or the frequency f 'after the further adjustment is further increased by 2% to obtain f'.
When the frequency of the bottom belt motor 3 is adjusted, the frequency of the bottom belt motor 3 can be initially adjusted through a material layer height signal detected by the material level detector 4, and then the frequency of the bottom belt motor 3 is secondarily adjusted through a start-stop frequency signal of the bottom belt motor 3 detected by the bottom belt motor start-stop frequency detection device 6; or the frequency of the bottom belt motor 3 is adjusted for the second time through a material layer height signal of the material in a limiting groove of the slice silk blending electronic scale detected by the slice silk blending electronic scale material level detection photoelectric tube. Or after the frequency of the bottom belt motor 3 is preliminarily adjusted by the material level detector 4, the frequency of the bottom belt motor 3 is secondarily adjusted by one of the bottom belt motor start-stop frequency detection device 6 and the thin sheet wire blending electronic scale material level detection device, and the frequency of the bottom belt motor 3 is adjusted for three times by the other of the bottom belt motor start-stop frequency detection device 6 and the thin sheet wire blending electronic scale material level detection device.
As shown in fig. 3, when the discharge uniformity of the slice yarn cabinet 1 is controlled by the level detector 4, the bottom belt motor start-stop frequency detection device 6 and the slice yarn blending electronic scale level detection device, the method comprises the following steps:
s1, calculating the set frequency f0 of the bottom belt motor 3;
s2, detecting the height of the material layer by using the material level detector 4, and adjusting the frequency of the bottom belt motor 3 to be f through the PLC control module 5 according to the height of the material layer;
s3, detecting the starting and stopping frequency of the bottom belt motor 3 by using the bottom belt motor starting and stopping frequency detection device 6, and further adjusting the frequency of the bottom belt motor 3 to be f' by the PLC control module 5 according to the starting and stopping frequency of the bottom belt motor 3;
s4, detecting the material layer height of the material in the measuring groove of the slice silk blending electronic scale 7 by using the slice silk blending electronic scale material level detection device, and further adjusting the frequency of the bottom belt motor 3 to be f' through the PLC control module 5 according to the material layer height of the material in the measuring groove of the slice silk blending electronic scale 7.
The frequency of the bottom belt motor 3 is adjusted according to the initial set frequency f0 of the bottom belt motor 3 through the material layer height signal detected by the material level detector 4, the set frequency f0 can be calculated according to the weight of the flaky silk 9 entering the flaky silk cabinet 1, and the specific method for calculating the set frequency f0 comprises the following steps:
s11, acquiring the cabinet entering weight M of the thin sheet yarns 9, the pure yarn flow L, the blending ratio P of the thin sheet yarns 9, the lattice number N occupied by the full cabinet thin sheet yarns 9, the full-speed running speed S of the bottom belt 2 and the full-speed running frequency value F of the bottom belt 2;
s12, according to equation 1:
calculating a set frequency value F0 of the thin slice filament 9 taken out of the cabinet;
s13, according to equation 2:
the set frequency f0 is calculated.
The pure silk flow L, the blending ratio P of the slice silks 9 in the batch, the weight M of the slice silks 9 entering the cabinet, the lattice number N occupied by the slice silks 9 when the cabinet is full, the full-speed running speed S of the bottom belt 2 and the full-speed running frequency value F of the bottom belt 2 are all fixed values. The cut tobacco is one of the cut tobacco production processes, and the cut tobacco produced in the cut tobacco drying process is called pure cut tobacco and is the cut tobacco without blending cut stems, expanded cut tobacco and thin slice tobacco 9. In the tobacco shred production process, the thin slice shreds 9 and the pure shreds are blended, the thin slice shred blending electronic scale is used for weighing the weight of the thin slice shreds 9, the pure shred electronic scale is used for weighing the weight of the pure shreds, and then the thin slice shred 9 and the pure shreds are blended. The pure silk flow L can be calculated by using a set value of the pure silk electronic scale flow before silk drying, and the pure silk flow L is equal to the set value of the pure silk electronic scale flow before silk drying and the fold weight coefficient after silk drying. It should be noted that, for convenience of calculation, the unit of the frequency value F0 and the full-speed operation frequency value F of the bottom tape 2 is HZ, the actual operation frequency value of the bottom tape motor 3 is HZ, the frequency F0 and the adjusted frequencies F, F', F ″ of the bottom tape motor 3 are percentages, and the ratio of the actual operation frequency value of the bottom tape motor 3 to the full-speed operation frequency value F of the bottom tape 2 is F.
The specific steps of calculating the set frequency f0 will be described below by taking an example of a yuxi brand X that requires 7% of flake yarn 9 to be blended.
The set value of the pure silk electronic scale flow before silk drying is 5000kg/h, the folding weight coefficient after silk drying is 0.94, and the pure silk flow L can be calculated to be 4700 kg. The range of the cabinet entry weight M of the thin threads 9 is generally 3300kg-3800kg, the cabinet entry weight M of a certain batch of the thin threads 9 is 3600kg, the blending proportion P of the thin threads 9 is 7%, the number N of the full cabinet thin threads 9 is 310, the full speed running speed S of the bottom belt 2 is 300/h, the full speed running frequency F of the bottom belt 2 is 50HZ, the set frequency value F0 of the thin threads 9 out of the cabinet can be calculated to be 4.7HZ according to the formula 1, and the set frequency F0 can be calculated to be 9.4 according to the formula 2. As shown in fig. 2, a plurality of metal supporting strips 21 with the same distance are arranged on the back surface of the bottom belt 2, the distance between the adjacent metal supporting strips 21 is the same, the bottom belt 2 between the adjacent metal supporting strips 21 can be used as a lattice, a proximity switch 22 is arranged at the bottom of the bottom belt 2, and after the metal approaches, the signal of the proximity switch 22 changes, so that the output speed of the thin-sheet wire 9 can be represented by the number of lattices conveyed in unit time in the moving process of the bottom belt 2. The lattice number N of the full cabinet thin threads 9 is 310 lattices, which means that the thin thread cabinet 1 can cover 310 lattices after the full cabinet thin threads 9 are stored; the full speed S of the bottom tape 2 is 300 grids/h, which means that 300 grids can be conveyed per hour when the bottom tape 2 is operated at the highest speed.
After the set frequency f0 of the bottom belt motor 3 is calculated, the frequency of the bottom belt motor 3 can be adjusted from the set frequency f0 to f according to the height of the material layer detected by the material level detector 4, and the method specifically comprises the following steps:
s21, acquiring the frequency range f1-f2 of the bottom belt motor 3 (f1 is less than f 2);
s22, the material level detector 4 collects material layer height signals and sends the material layer height signals to the PLC control module 5;
s23, when the material layer height H is more than or equal to the highest material height H2, the frequency of the bottom belt motor 3 runs according to the lowest frequency f 1;
when the material layer height H is less than or equal to the lowest material height H1, the frequency of the bottom belt motor 3 runs according to the highest frequency f 2;
and when the lowest material height H1 is more than the material layer height H and less than the highest material height H2, performing interpolation calculation, and calculating the frequency f of the bottom belt motor 3 corresponding to the material layer height H.
The method for acquiring the frequency range f1-f2 of the bottom belt motor 3 comprises the following steps:
s211, counting the heights of material layers of n batches of thin sheet yarns 9 to obtain an average material height H0, a lowest material height H1 and a highest material height H2;
s212, according to the formula 3: setting the frequency f0, the average material height H0, the highest frequency f2, the lowest material height H1, the lowest frequency f1, the highest material height H2, and calculating to obtain the lowest frequency f1 and the highest frequency f 2.
The range Δ f1 to Δ f2 of the correction amount of the frequency of the bottom belt motor 3 can be calculated according to the lowest frequency f1 and the highest frequency f2, so that the operator can know the adjustable range of the frequency of the bottom belt motor 3, wherein Δ f1 is the lowest frequency f 1-the set frequency f0, and Δ f2 is the highest frequency f 2-the set frequency f 0. The frequency correction amount Δ f corresponding to the discharge layer height H may be calculated from the frequency f of the bottom belt motor 3, and Δ f is equal to the bottom belt motor frequency f — the set frequency f 0. From the positive and negative of the frequency correction amount Δ f, it is possible to know whether the frequency of the bottom tape motor 3 needs to be increased or decreased based on the set frequency. When Δ f is a positive number, the frequency of the bottom belt motor 3 needs to be increased; when Δ f is a negative number, the frequency of the bottom belt motor 3 needs to be reduced; when Δ f is 0, the frequency of the bottom tape motor 3 is kept constant.
The lowest material height H1 is the average value of the lowest material height of n batches of the thin-sheet threads 9, and the highest material height H2 is the average value of the highest material height of n batches of the thin-sheet threads 9. The average material height H0 is an average value obtained by calculating the average material height of each batch of the thin-sheet threads 9 and then averaging the average material heights of n batches of the thin-sheet threads 9.
For the convenience of understanding of the present invention, a method of adjusting the frequency of the bottom tape motor 3 from the set frequency f0 to f and a method of obtaining the range Δ f1 to Δ f2 of the correction amount of the frequency of the bottom tape motor 3 based on the height of the bed detected by the level detector 4 will be described below by way of example. For example, the material layer heights of 10 batches of the thin-sheet yarns 9 entering the thin-sheet yarn cabinet 1 can be counted, as shown in table 1 (the material layer heights are all integers), and of course, more batches can be used for measurement statistics in order to improve accuracy.
TABLE 1 statistics of sheet filament layer heights
| Batches of | Minimum material height H1(mm) | Highest material height H2(mm) | Average material height H0(mm) |
| 1 | 589 | 1064 | 846 |
| 2 | 623 | 1075 | 867 |
| 3 | 613 | 1067 | 824 |
| 4 | 604 | 1022 | 812 |
| 5 | 674 | 1013 | 798 |
| 6 | 600 | 1067 | 816 |
| 7 | 543 | 1042 | 837 |
| 8 | 593 | 1061 | 824 |
| 9 | 611 | 1031 | 816 |
| 10 | 552 | 1054 | 834 |
| Mean value of | 600 | 1050 | 827 |
As can be seen from table 1, the 10 batches of sheet wire 9 had an material layer height of 600mm to 1050mm, an average material height of 827mm, and a set frequency f0 of 9.4%, thus, according to equation 3: setting the frequency f0, the average material height H0, the highest frequency f2, the lowest frequency f1, the highest material height H1, the lowest frequency f1, the highest material height H2, can calculate that the highest frequency f2 is 13%, the lowest frequency f1 is 7.4%, and the frequency range of the bottom belt motor 3 is 7.4% -13%. Δ f1 is the lowest frequency f 1-set frequency f0 is-2%, Δ f2 is the highest frequency f 2-set frequency f0 is 3.6%, and the correction amount of the frequency of the bottom tape motor 3 ranges from-2% to 3.6%. When the material layer height H is greater than or equal to the maximum material height H2, the frequency of the bottom tape motor 3 is operated at the lowest frequency F1, in this example, when the material layer height H detected by the material level detector 4 is greater than or equal to 1050mm, the bottom tape motor 3 is operated at the lowest frequency F1, that is, at 7.4% (50.7% ═ 3.7HZ) of the full-speed operation frequency F of the bottom tape 2. When the material layer height H is less than or equal to the lowest material height H1, the frequency of the bottom belt motor 3 is operated at the highest frequency F2, in this example, when the material layer height H is less than or equal to 600mm, the bottom belt motor 3 is operated at the highest frequency F2, that is, at 13% (50 × 13% ═ 6.5HZ) of the full-speed operation frequency F of the bottom belt 2. When the lowest material height H1 is larger than the material layer height H and is smaller than the highest material height H2, interpolation calculation is needed, and the frequency f of the bottom belt motor 3 corresponding to the material layer height H is calculated. Taking the material level height H detected by the material level detector 4 as 960mm as an example, the material layer height range is 600mm-1050mm, the frequency range of the bottom belt motor 3 corresponding to the material layer height is 13% -7.4%, when the material level height H is 960mm, the frequency of the corresponding bottom belt motor 3 is 8.52% by interpolation calculation, and at this time, the frequency correction quantity Δ f of the corresponding bottom belt motor 3 is 8.52% -9.4% — 0.88%, and the frequency needs to be reduced by 0.88% on the basis of the set frequency.
(1) when the frequency of the bottom belt motor 3 is the set frequency f0, measuring the time t0 required by the material to be transported from the position of the material level detector 4 to the discharge hole;
(2) according to equation 4: setting a frequency f0, setting a stack time t0, a highest frequency f2, a lowest stack time t1, a lowest frequency f1, a highest stack time t2, and calculating a range t1-t2 of the stack time (t1 < t 2);
(3) and (3) according to f1-f2 and t1-t2, interpolating to calculate the corresponding stack time t3 when the frequency of the bottom belt motor 3 is f 3.
Taking the above-mentioned set frequency f0 as 9.4%, the highest frequency f2 as 13%, the lowest frequency f1 as 7.4%, and the frequency range of the bottom belt motor 3 as 7.4% -13%, when the material level detector 4 is 500mm away from the port of the discharging end cabinet, by using the measurement method conventionally used by those skilled in the art, for example, a point may be marked on the bottom belt 2 below the material level detector 4, and the time required for the marked point on the bottom belt 2 to be transported from the position of the material level detector 4 to the discharging end, that is, the time required for the material to be transported from the position of the material level detector 4 to the discharging end, after measurement, t0 is 70s, from the time when the material level detector 4 detects the height of the material, after 70s have passed, the PLC control module 5 controls the frequency of the bottom belt motor 3 to be adjusted from f3 to the frequency f of the bottom belt motor 3 which needs to be adjusted. From f0 × t0 ═ f2 × t1 ═ f1 × t2, t1 ═ 51s and t2 ═ 89s can be calculated, and when the stock level height H before the bottom tape motor 3 is adjusted is 960mm, the frequency f3 of the corresponding bottom tape motor 3 is 8.52%, and at this time, the interpolation calculation can obtain the corresponding stack time t3 of 81s, and after the stock level detector 4 detects the stock level and 81s is required to pass, the PLC control module 5 controls the frequency of the bottom tape motor 3 to be adjusted from f3 to the frequency f which the bottom tape motor 3 needs to be adjusted. After the frequency of the bottom belt motor 3 is adjusted to f, the frequency to be adjusted is calculated to be f4 at the next moment, the stacking time t is calculated on the basis of the frequency f, and the stacking time t changes along with the frequency of the bottom belt motor 3, so that the adjustment of the cabinet discharging speed of the thin slice silk 9 is more accurate.
Adopt in order to inspect the utility model discloses an effect that the device controlled 1 ejection of compact homogeneity of thin slice silk cabinet can be verified through this yuxi brand X's mixed silk filling value, mainstream flue gas and sense organ evaluation.
And (3) testing group: select pure silk moisture to stabilize in 13.8% period in the production, according to the utility model discloses a device is controlled 1 discharge speed of thin slice silk cabinet, gets this yuxi brand X mixed silk 1070g before perfuming, as the sample of inspection group.
Comparison group: in the production process, a time period when the moisture of the pure silk is stabilized at 13.8% is selected, 1000g of the pure silk is taken before blending, 70g of the thin silk 9 is further taken according to the blending proportion of 7% of the thin silk 9, and manual and full mixing is carried out to obtain 1070g of mixed silk.
The test method comprises the following steps:
(1) and rolling the test group sample and the comparison group sample by a PROTOS 2C cigarette making machine to obtain samples W1 and W2, placing the samples in a constant temperature and humidity box with the temperature of 22 ℃ and the relative humidity of 60% for balancing for 48 hours, equally dividing the rolled sample W1 into two parts of W1.1 and W1.2 for later use, and equally dividing the rolled sample W2 into two parts of W2.1 and W2.2 for later use.
(2) One of the two samples W1 and W2 was used for measuring the cut tobacco filling value, 10 groups of samples W1.1 and W2.1 were used, and 10 samples were each used for measuring the cut tobacco filling value according to the method of YC/T152-2001 standard. The measurement results are shown in table 1.
(3) The other of the two samples W1 and W2 is used for mainstream smoke determination and sensory evaluation, 10 groups of samples W1.2 and W2.2 are respectively taken, 10 samples are taken in each group, and conventional indexes (tar, nicotine and CO) of cigarette mainstream smoke are determined according to GB/T5606.1-2004 and GB/T16447-2004. Sensory evaluation was carried out by a comparative evaluation method by 10 members of a factory panel according to the GB5606.4-2005 and GB5606.5-2005 standards. Taking the W2.2 sample as a standard, the better evaluation index is represented by a plus value than the comparison group, and the worse evaluation index is represented by a minus value than the comparison group; the degree value is divided into 3 grades: the measurement results are shown in tables 2 and 3, respectively, with 0 (no change), 1 (significant change), and 2 (significant change).
TABLE 2 filling values and statistical results of conventional mainstream smoke mean
TABLE 3 sensory quality evaluation of the samples
| Index (I) | Fragrance | Tuning by hand | Miscellaneous qi | Irritation property | Aftertaste |
| W1 | +1 | 0 | +1 | +1 | 0 |
| W2 | 0 | 0 | 0 | 0 | 0 |
To sum up, through the utility model discloses a device is controlled thin slice silk cabinet ejection of compact homogeneity, and no matter the mixed silk that finally mixes compares from filling value, mainstream flue gas, still sensory quality, can both reach the mixed silk level when exceeding the standard blending even.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A device for controlling the discharging uniformity of a slice yarn cabinet is characterized by comprising: the device comprises a slice silk cabinet, a bottom belt motor, a material level detector and a PLC control module;
the slice silk cabinet is used for storing slice silk materials, and a bottom belt is arranged at the bottom of the slice silk cabinet;
the bottom belt motor is used for driving a bottom belt to output materials from the slice silk cabinet, and the bottom belt motor is a variable frequency motor and can control the speed of material output;
the material level detector is arranged above the material of the discharge end cabinet of the slice yarn cabinet and is used for collecting a material layer height signal of the material in the slice yarn cabinet and sending the material layer height signal to the PLC control module;
and the PLC control module is used for receiving the material layer height signal and controlling the bottom belt motor to adjust the frequency of the bottom belt motor.
2. The device for controlling the discharge uniformity of a cabinet for thin film filaments as claimed in claim 1 wherein the level detector is positioned vertically at the center of the width of the cabinet for the discharge end of the cabinet for thin film filaments.
3. The device for controlling the discharging uniformity of thin sheet yarn cabinets according to claim 1 or 2, wherein the level detector is 450mm to 550mm from the port and 1720mm to 1780mm from the cabinet bottom.
4. The device for controlling the discharge uniformity of thin-sheet silk cabinets according to claim 3, characterized in that the PLC control module is provided with a stack time t for the delayed adjustment of the frequency of the bottom belt motor.
5. The device for controlling the discharge uniformity of a cabinet for thin-sheet yarns according to claim 4, characterized in that the stacking time t is the time t0 required for the material to be transported from the position of the level detector to the discharge outlet when the frequency of the bottom belt motor is the set frequency f 0; or alternatively
And the stacking time t is the time t3 required for conveying the material from the position of the material level detector to the discharge port when the bottom belt motor operates according to the adjusted front frequency f 3.
6. The device for controlling the discharging uniformity of the thin slice yarn cabinet according to claim 1, wherein a bottom belt motor start-stop frequency detection device is further arranged and used for collecting start-stop frequency signals of a bottom belt motor and sending the start-stop frequency signals to the PLC control module.
7. The device for controlling the discharging uniformity of the laminar filament cabinet according to the claim 1 or 6, wherein a laminar filament blending electronic scale material level detection device is further provided for detecting the material layer height of the material in the limiting groove of the blending electronic scale and sending a material layer height signal of the material in the limiting groove of the blending electronic scale to the PLC control module.
8. The device for controlling the discharging uniformity of the thin slice filament cabinet according to claim 7, wherein the thin slice filament blending electronic scale material level detecting device is a high material level detecting photoelectric tube, a medium material level detecting photoelectric tube and a low material level detecting photoelectric tube which are arranged in the blending electronic scale limiting groove from high to low in sequence.
9. The device for controlling the discharging uniformity of a slice and yarn cabinet according to claim 1, wherein the level detector is an ultrasonic level detector or a laser level detector.
10. The device for controlling the discharging uniformity of the thin-sheet silk cabinet according to claim 1, further comprising an analog input module, wherein the analog input module is arranged in the frequency converter of the material level detector or the bottom belt motor, and is used for receiving the material layer height analog signal sent by the material level sensor, converting the material layer height analog signal into a digital signal, and sending the digital signal to the PLC control module.
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| CN202221015573.8U CN217429235U (en) | 2022-04-28 | 2022-04-28 | Device for controlling discharging uniformity of slice yarn cabinet |
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|---|---|---|---|
| CN202221015573.8U CN217429235U (en) | 2022-04-28 | 2022-04-28 | Device for controlling discharging uniformity of slice yarn cabinet |
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