CN117125446A - Automatic control system for conveying bottom belt of leaf storage cabinet - Google Patents
Automatic control system for conveying bottom belt of leaf storage cabinet Download PDFInfo
- Publication number
- CN117125446A CN117125446A CN202311063254.3A CN202311063254A CN117125446A CN 117125446 A CN117125446 A CN 117125446A CN 202311063254 A CN202311063254 A CN 202311063254A CN 117125446 A CN117125446 A CN 117125446A
- Authority
- CN
- China
- Prior art keywords
- bottom belt
- frequency
- conveying bottom
- storage cabinet
- leaf storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003860 storage Methods 0.000 title claims abstract description 85
- 239000000463 material Substances 0.000 claims abstract description 125
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 230000002159 abnormal effect Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000005856 abnormality Effects 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000010998 test method Methods 0.000 claims description 4
- 241000208125 Nicotiana Species 0.000 claims description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 5
- 230000000875 corresponding effect Effects 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 206010063385 Intellectualisation Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
- B65G47/18—Arrangements or applications of hoppers or chutes
- B65G47/19—Arrangements or applications of hoppers or chutes having means for controlling material flow, e.g. to prevent overloading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
The application discloses an automatic control system for a conveying bottom belt of a leaf storage cabinet, which comprises a model building module, a control module, an early warning module and an abnormality analysis module, wherein the model building module comprises a material model in a material bin and a conveying bottom belt control model. The system automatically adjusts the discharging frequency of the conveying bottom belt in the stages of material head, material middle and material tail by establishing a material model in a material bin and a conveying bottom belt control model; when the difference between the calculated frequency and the actual measured frequency of the conveying bottom belt control model is larger than an early warning threshold value, early warning prompt is carried out; and when an abnormal early warning condition occurs, the abnormal factors are rapidly positioned and displayed so as to be rapidly processed. The application can automatically adjust the frequency and the conveying speed of the conveying bottom belt in the stage of the stub bar, the middle and the tail of the material discharged from the leaf storage cabinet, thereby solving the problems of material blockage and the like caused by overlong time consumption, high labor intensity of manual operation, high error rate and the like of the stub bar and the tail of the material discharged from the leaf storage cabinet in the process of conveying materials.
Description
The application is as follows: 202210706026.2 the application relates to a divisional application of an automatic control method for a conveying bottom belt of a leaf storage cabinet.
Technical Field
The application is applied to the field of cigarette cut-making, and particularly relates to an automatic control system for a conveying bottom belt of a leaf storage cabinet.
Background
The leaf storage cabinet is a main storage device used on a silk production line, and has the functions of mainly storing materials, adjusting the production of the whole line, balancing the water content and the temperature of the materials and meeting the technological requirements.
The main part of the leaf storage cabinet discharging comprises a cabinet body head and a conveying bottom belt, wherein the cabinet body head is a frame type steel structural member, and a main transmission shaft, a poking roll shaft and a transmission device are arranged on the cabinet body head. When the leaf storage cabinet discharges, the conveying bottom belt and the poking roller operate, the poking roller is used for loosening materials, and the conveying bottom belt is used for conveying the materials from the tail part of the cabinet body to the head part of the cabinet body. The poking roller adopts fixed rotation speed to operate, and the conveying bottom belt needs to change the operation speed, so that the discharge amount of the leaf storage cabinet is regulated, and the requirement of the downstream process on the material flow is further met.
At present, the discharging of the leaf storage cabinet of the silk production line is controlled by a central control operator. Because the materials loaded in the leaf storage cabinet are approximately trapezoidal, the height of the materials of the stub bar is lower, in order to obtain normal production flow, the discharging time of the stub bar is reduced, and in the stub bar stage, operators must adjust the speed of the conveying bottom belt to be high, so that the materials in the leaf storage cabinet are discharged out of the cabinet rapidly; after a period of time, as the height of the material gradually becomes higher to a normal state, an operator must adjust the speed of the conveying bottom belt to a normal level within a certain period of time, otherwise, the situation that the material is blocked at the outlet of the leaf storage cabinet or at the joint of auxiliary connection equipment due to overlarge flow of the outlet cabinet may occur; when approaching the tailing, operators also have to increase the speed of the conveying bottom belt, so that the materials in the leaf storage cabinet can be discharged out of the cabinet quickly, and the discharging time of the tailing is shortened. When multi-line simultaneous production is carried out, a central control operator needs to operate the leaf storage cabinet for discharging of different line segments simultaneously. Therefore, the problem that the bottom belt speed of the leaf storage cabinet conveying is forgotten or is not adjusted, the time for discharging the cabinet material head and the material tail is long, or the problem of blocking caused by overlarge material flow is possibly caused, so that the production efficiency and the product quality are both influenced.
In the whole discharging process, the running frequency of the bottom belt is adjusted in real time according to the material flow of the discharging end, and hysteresis exists in the operating method. Meanwhile, in order to avoid the blocking of the discharge end, the discharge of the material head and the material tail is long, and the number of times of blocking of the discharge end caused by untimely frequency adjustment is counted to be 1 time/month.
Therefore, an automatic control system for the conveying bottom belt of the leaf storage cabinet, which can accurately control and accurately early warn, is urgently needed to solve the problems of blockage and the like caused by overlong material head and material tail time, high labor intensity of manual operation and high error rate in the use process of the leaf storage cabinet, and realize the intellectualization and automation of the production control of the leaf storage cabinet.
Disclosure of Invention
In order to solve the problems, the application provides an automatic control system for a conveying bottom belt of a leaf storage cabinet, which aims to improve the production efficiency, lighten the labor intensity of manual operation and realize the intellectualization and automation of the control of the leaf storage cabinet.
The technical scheme adopted for solving the technical problems is as follows:
the automatic control method of the leaf storage cabinet conveying bottom belt comprises the following steps:
model creation
(1) Establishing a material model in a material warehouse
Identifying and defining the stages of the stub bar, the middle material and the tail material according to the discharge flow L of the leaf storage cabinet and the discharge residual proportion m% of the leaf storage cabinet;
the normal discharging flow of the leaf storage cabinet is Ln; ln=5000±100kg/h;
and (3) a stub bar stage: the discharge flow L is less than 4900kg/h, and the discharge residual proportion m of the leaf storage cabinet is less than or equal to 1% and less than or equal to 100%;
stage in the material: the discharge flow L=5000+/-100 kg/h, and the discharge residual proportion m2% of the leaf storage cabinet is less than or equal to m% and less than or equal to m1%;
and (3) tail material stage: the discharge flow L is less than 4900kg/h, and the discharge residual proportion of the leaf storage cabinet is more than or equal to 0 and less than or equal to m percent and less than or equal to 2 percent;
wherein, the values of m1 and m2 are determined by adopting an orthogonal test method;
(2) Establishing a control model of the conveying bottom belt
Automatically adjusting the discharging frequency f of the conveying bottom belt in the stage of material head, material middle and material tail;
(1) the material head stage comprises an initial stage and a gradient stage, and the residual discharge proportion corresponding to the starting point of the gradient stage is m0%;
in the initial stage, m% is more than or equal to m0%, and the discharge frequency of the conveying bottom belt is fn, wherein fn=50 Hz;
along with the increase of the material at the discharge end to the gradient stage, the m0% > m1%, the frequency of the discharge of the conveying bottom belt is adjusted to f=fn.m% until the residual discharge proportion is m1%;
namely the frequency of the bottom belt conveyed in the material head stage:
(2) in the material stage, the frequency of the conveying bottom belt is the theoretical frequency f, and the frequency of the conveying bottom belt is finely adjusted through the state of the photoelectric tube of the quantitative tube;
i.e. stage-in-feed bottom band frequency: f=f, ±Δf;
when the state of the photoelectric tube is low light and no material exists, the frequency f of the conveying bottom belt is increased by delta f at intervals of t seconds;
when the state of the photoelectric tube is low-light and has materials, the frequency f=f of the conveying bottom belt is treated;
when the state of the photoelectric tube is that the material is low, the material is present for 2 seconds, and the frequency f of the conveying bottom belt is reduced by delta f for the interval time t seconds;
when the state of the photoelectric tube is that the medium light exists for 2 seconds, the frequency f=0 of the conveying bottom belt;
(3) frequency of conveying bottom belt in tail stage: f=fn (1-m%);
(II) abnormality early warning
When the difference between the calculated frequency and the actual measured frequency of the conveying bottom belt control model is larger than an early warning threshold value, early warning prompt is carried out;
resetting a conveying bottom belt control model and recalculating, and stopping production and waiting for maintenance if an early warning prompt is still sent;
(III) abnormality analysis
The leaf storage cabinet conveying bottom belt frequency, the rotation speed of a cigarette poking roller, a quantitative tube photoelectric tube and leaf shred main balance flow are used as correlation factors to be correlated and bound with a leaf storage cabinet production control system;
when an abnormal early warning condition occurs, abnormal factors are rapidly positioned and displayed so as to be rapidly processed and avoid production cutoff.
The application also aims to provide an automatic control system for the conveying bottom belt of the leaf storage cabinet.
The automatic control system for the conveying bottom belt of the leaf storage cabinet comprises a model building module, a control module, an early warning module and an abnormality analysis module;
the model building module comprises a material model in a material bin and a conveying bottom belt control model;
the material model in the bin identifies and defines the stages of the stub bar, the middle material and the tail material according to the discharge flow L of the leaf storage cabinet and the discharge residual proportion m of the leaf storage cabinet;
the conveying bottom belt control model is established in sections according to different stages of a stub bar, a middle material and a tail material:
(1) the material head stage comprises an initial stage and a gradient stage, and the residual discharge proportion corresponding to the starting point of the gradient stage is m0%;
in the initial stage, m% is more than or equal to m0%, and the discharge frequency of the conveying bottom belt is fn, wherein fn=50 Hz;
along with the increase of the material at the discharge end to the gradient stage, the m0% > m1%, the frequency of the discharge of the conveying bottom belt is adjusted to f=fn.m% until the residual discharge proportion is m1%;
namely the frequency of the bottom belt conveyed in the material head stage:
(2) in the material stage, the frequency of the conveying bottom belt is the theoretical frequency f, and the frequency of the conveying bottom belt is finely adjusted through the state of the photoelectric tube of the quantitative tube;
i.e. stage-in-feed bottom band frequency: f=f, ±Δf;
when the state of the photoelectric tube is low light and no material exists, the frequency f of the conveying bottom belt is increased by delta f at intervals of t seconds;
when the state of the photoelectric tube is low-light and has materials, the frequency f=f of the conveying bottom belt is treated;
when the state of the photoelectric tube is that the material is low, the material is present for 2 seconds, and the frequency f of the conveying bottom belt is reduced by delta f for the interval time t seconds;
when the state of the photoelectric tube is that the medium light exists for 2 seconds, the frequency f=0 of the conveying bottom belt;
(3) frequency of conveying bottom belt in tail stage: f=fn (1-m%);
the control module is used for selecting a corresponding conveying bottom belt control model to automatically adjust the discharging frequency of the conveying bottom belt according to the different discharging stages of the current leaf storage cabinet;
the early warning module is used for early warning and prompting when the difference between the calculated frequency and the actual measured frequency of the conveying bottom belt control model is larger than an early warning threshold value; resetting a conveying bottom belt control model and recalculating, and if an early warning prompt is still sent, controlling the leaf storage cabinet to stop production and waiting for maintenance of operators by the early warning module;
the abnormality analysis module is used for associating and binding control parameters, production parameters and key component states related to the frequency of the conveying bottom belt, such as the frequency of the conveying bottom belt of the leaf storage cabinet, the rotating speed of a cigarette poking roller, a quantitative tube photoelectric tube, the main balance flow of leaf shreds and the like, as association factors with a production control system of the leaf storage cabinet; when an abnormal early warning condition occurs, abnormal factors can be rapidly analyzed, positioned and shown.
The beneficial effects brought by the application are as follows:
the application can automatically adjust the frequency and the conveying speed of the conveying bottom belt in the stage of the stub bar, the middle and the tail of the material discharged from the leaf storage cabinet, thereby solving the problems of material blockage and the like caused by overlong time consumption, high labor intensity of manual operation, high error rate and the like of the stub bar and the tail of the material discharged from the leaf storage cabinet in the process of conveying materials.
Meanwhile, the application adds a flow abnormality early warning function for storing She Guishe wire discharge. When an abnormal early warning condition occurs, the alarm is immediately given, abnormal factors are rapidly positioned and displayed, so that operators can rapidly handle the abnormal problems, and production cutoff is avoided.
Drawings
The application will be further described with reference to the accompanying drawings and specific examples,
FIG. 1 is a block diagram of an automatic control system for a conveyor belt of a leaf storage cabinet;
FIG. 2 is a schematic diagram of the best parameter selection for the orthogonal experiment in example 1.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
The automatic control method of the leaf storage cabinet conveying bottom belt comprises the following steps:
model creation
(1) Establishing a material model in a material warehouse
Identifying and defining the stages of the stub bar, the middle material and the tail material according to the discharge flow L of the leaf storage cabinet and the discharge residual proportion m% of the leaf storage cabinet;
the normal discharging flow of the leaf storage cabinet is Ln; ln=5000±100kg/h;
and (3) a stub bar stage: the discharge flow L is less than 4900kg/h, and the discharge residual proportion m of the leaf storage cabinet is less than or equal to 1% and less than or equal to 100%;
stage in the material: the discharge flow L=5000+/-100 kg/h, and the discharge residual proportion m2% of the leaf storage cabinet is less than or equal to m% and less than or equal to m1%;
and (3) tail material stage: the discharge flow L is less than 4900kg/h, and the discharge residual proportion of the leaf storage cabinet is more than or equal to 0 and less than or equal to m percent and less than or equal to 2 percent;
wherein, the values of m1 and m2 are determined by adopting an orthogonal test method:
taking the flow extreme value of the cut tobacco main scale as a target to formulate an orthogonal test scheme;
TABLE 1 factor-level table
L9 (3) 4 ) Performing 9 tests on the orthogonal table;
table 2 orthogonal test protocol and results calculation table
By orthogonal experimental best parameter selection, referring to fig. 2, the best scheme is determined to be A2B1C2D3. Namely, the frequency change interval time t=10s of the bottom belt of the leaf storage cabinet conveying belt, the stepping frequency deltaf=0.5 Hz of the bottom belt of the leaf storage cabinet conveying belt, and the discharge residual proportion m1% =88% and m2% =4% of the leaf storage cabinet.
(2) Establishing a control model of the conveying bottom belt
Automatically adjusting the discharging frequency f of the conveying bottom belt in the stage of material head, material middle and material tail;
(1) the material head stage comprises an initial stage and a gradient stage, and the residual discharge proportion corresponding to the starting point of the gradient stage is m0%;
in the initial stage, m% is more than or equal to m0%, and the discharge frequency of the conveying bottom belt is fn, wherein fn=50 Hz;
along with the increase of the material at the discharge end to the gradient stage, the m0% > m1%, the frequency of the discharge of the conveying bottom belt is adjusted to f=fn.m% until the residual discharge proportion is m1%;
namely the frequency of the bottom belt conveyed in the material head stage:
(2) in the material middle stage, the frequency of the conveying bottom belt is changed into a theoretical frequency f (namely fn), and the frequency of the conveying bottom belt is finely adjusted through the state of a quantitative tube photoelectric tube;
i.e. stage-in-feed bottom band frequency: f=f, ±Δf;
when the state of the photoelectric tube is low-light and no material (the low-position photoelectric tube is no material), the frequency f of the conveying bottom belt is increased by delta f at intervals of t seconds;
when the state of the photoelectric tube is low-light and has materials, the frequency f=f of the conveying bottom belt is treated;
when the state of the photoelectric tube is that the material is low, the material is present for 2 seconds, and the frequency f of the conveying bottom belt is reduced by delta f for the interval time t seconds;
when the state of the photoelectric tube is that the medium light has a material (the medium photoelectric tube has a material) for 2 seconds, conveying the bottom belt frequency f=0, and stopping conveying;
(3) frequency of conveying bottom belt in tail stage: f=50 x (1-m%);
(II) abnormality early warning
When the calculated frequency and the actual measured frequency of the conveying bottom belt control model differ by more than 2 (preset value), early warning prompt is carried out;
resetting a conveying bottom belt control model and recalculating, and stopping production and waiting for maintenance if an early warning prompt is still sent;
(III) abnormality analysis
The leaf storage cabinet conveying bottom belt frequency, the rotation speed of a cigarette poking roller, the photoelectric tube of a quantitative tube, the main balance flow of leaf shreds and the like are used as correlation factors to be correlated and bound with a leaf storage cabinet production control system;
when an abnormal early warning condition occurs, abnormal factors are rapidly positioned and displayed so as to be rapidly processed and avoid production cutoff.
Example 2
An automatic control system for a conveying bottom belt of a leaf storage cabinet.
Referring to fig. 1, the automatic control system includes a model building module, a control module, an early warning module, and an anomaly analysis module:
the model building module comprises a material model in a material bin and a conveying bottom belt control model;
the material model in the bin identifies and defines the stages of the stub bar, the middle material and the tail material according to the discharge flow L of the leaf storage cabinet and the discharge residual proportion m% of the leaf storage cabinet; for specific details, reference is made to example 1;
the conveying bottom belt control model is established in sections according to different stages of a stub bar, a middle material and a tail material:
(1) the material head stage comprises an initial stage and a gradient stage, and the residual discharge proportion corresponding to the starting point of the gradient stage is m0%;
in the initial stage, m% is more than or equal to m0%, and the discharge frequency of the conveying bottom belt is fn, wherein fn=50 Hz;
along with the increase of the material at the discharge end to the gradient stage, the m0% > m1%, the frequency of the discharge of the conveying bottom belt is adjusted to f=fn.m% until the residual discharge proportion is m1%;
namely the frequency of the bottom belt conveyed in the material head stage:
(2) in the material middle stage, the frequency of the conveying bottom belt is changed into a theoretical frequency f, and the frequency of the conveying bottom belt is finely adjusted through the state of a quantitative pipe low-position photoelectric tube;
i.e. stage-in-feed bottom band frequency: f=f, ±Δf;
when the state of the photoelectric tube is low light and no material exists, the frequency f of the conveying bottom belt is increased by delta f at intervals of t seconds;
when the state of the photoelectric tube is low-light and has materials, the frequency f=f of the conveying bottom belt is treated;
when the state of the photoelectric tube is that the material is low, the material is present for 2 seconds, and the frequency f of the conveying bottom belt is reduced by delta f for the interval time t seconds;
when the state of the photoelectric tube is that the medium light exists for 2 seconds, the frequency f=0 of the conveying bottom belt;
(3) frequency of conveying bottom belt in tail stage: f=50 x (1-m%);
the control module is used for selecting a corresponding conveying bottom belt control model to automatically calculate and adjust the discharging frequency of the conveying bottom belt according to the different discharging stages of the current leaf storage cabinet;
the early warning module is used for early warning and prompting when the difference between the calculated frequency and the actual measured frequency of the conveying bottom belt control model is larger than an early warning threshold value; resetting a conveying bottom belt control model and recalculating, and if an early warning prompt is still sent, controlling the leaf storage cabinet to stop production and waiting for maintenance of operators by the early warning module;
the abnormality analysis module is used for associating and binding the frequency of the conveying bottom belt of the leaf storage cabinet, the rotation speed of the cigarette poking roller, the photoelectric tube of the quantitative tube and the main balance flow of the cut tobacco as association factors with the electric control system of the leaf storage cabinet; and when an abnormal early warning condition occurs, the abnormal factors are rapidly positioned and displayed.
Example 3
The automatic control method for the bottom belt of the leaf storage cabinet of example 1 and the automatic control system for the bottom belt of the leaf storage cabinet of example 2 are applied to the leaf storage cabinet process.
The conveying bottom belt control model and the early warning analysis function related auxiliary module are arranged in a blending room control system to be downloaded and debugged, and meanwhile, the system is in butt joint with the existing production operation system wincc to be debugged; the method comprises the steps of performing trial running on a compiled automatic switching program, tracking the effect, perfecting and improving the problems of a control system and a control method, tracking the running effect, and recording the discharging state of 30 batches of materials:
(1) The duration of the stub bar stage is shortened to 2min from approximately 7min before improvement;
(2) The duration of the tail material stage is shortened to 2min from nearly 5min before improvement;
(3) The times of discharging, blocking and cutting off the leaf storage cabinet are 0 times/month.
The control method and the system for the discharging and conveying bottom belt of the leaf storage cabinet are stable in operation and remarkable in improvement effect.
It should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present application, and although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present application.
Claims (3)
1. Automatic control system of leaf storage cabinet conveying bottom belt, its characterized in that: the system comprises a model building module, a control module, an early warning module and an abnormality analysis module;
the model building module comprises a material model in a material bin and a conveying bottom belt control model;
the material model in the bin identifies and defines the stages of the stub bar, the middle material and the tail material according to the discharge flow L of the leaf storage cabinet and the discharge residual proportion m of the leaf storage cabinet;
the normal discharge flow of the leaf storage cabinet is Ln=5000+/-100 kg/h;
and (3) a stub bar stage: the discharge flow L is less than 4900kg/h, and the discharge residual proportion m of the leaf storage cabinet is less than or equal to 1% and less than or equal to 100%;
stage in the material: the discharge flow L=5000+/-100 kg/h, and the discharge residual proportion m2% of the leaf storage cabinet is less than or equal to m% and less than or equal to m1%;
and (3) tail material stage: the discharge flow L is less than 4900kg/h, and the discharge residual proportion of the leaf storage cabinet is more than or equal to 0 and less than or equal to m percent and less than or equal to 2 percent;
wherein, the values of m1 and m2 are determined by adopting an orthogonal test method:
taking the flow extreme value of the cut tobacco main scale as a target to formulate an orthogonal test scheme;
l9 (3) 4 ) Performing 9 tests on the orthogonal table;
the optimal scheme is determined through the optimal parameter selection of the orthogonal experiment, and values of frequency change interval time t of the leaf storage cabinet conveying bottom belt, stepping frequency delta f of the leaf storage cabinet conveying bottom belt and m1% and m2% of the residual discharging proportion of the leaf storage cabinet are obtained;
the conveying bottom belt control model is established in sections according to different stages of a stub bar, a middle material and a tail material:
(1) the material head stage comprises an initial stage and a gradient stage, and the residual discharge proportion corresponding to the starting point of the gradient stage is m0%;
in the initial stage, m% is more than or equal to m0%, and the discharge frequency of the conveying bottom belt is fn, wherein fn=50 Hz;
along with the increase of the material at the discharge end to the gradient stage, the m0% > m1%, the frequency of the discharge of the conveying bottom belt is adjusted to f=fn.m% until the residual discharge proportion is m1%;
namely the frequency of the bottom belt conveyed in the material head stage:
(2) in the material stage, the frequency of the conveying bottom belt is the theoretical frequency f, and the frequency of the conveying bottom belt is finely adjusted through the state of the photoelectric tube of the quantitative tube;
i.e. stage-in-feed bottom band frequency: f=f, ±Δf;
when the state of the photoelectric tube is low light and no material exists, the frequency f of the conveying bottom belt is increased by delta f at intervals of t seconds;
when the state of the photoelectric tube is low-light and has materials, the frequency f=f of the conveying bottom belt is treated;
when the state of the photoelectric tube is that the material is low, the material is present for 2 seconds, and the frequency f of the conveying bottom belt is reduced by delta f for the interval time t seconds;
when the state of the photoelectric tube is that the medium light exists for 2 seconds, the frequency f=0 of the conveying bottom belt;
(3) frequency of conveying bottom belt in tail stage: f=fn (1-m%);
the control module is used for selecting a corresponding conveying bottom belt control model to automatically adjust the discharging frequency of the conveying bottom belt according to the different discharging stages of the current leaf storage cabinet;
the early warning module is used for early warning and prompting when the difference between the calculated frequency and the actual measured frequency of the conveying bottom belt control model is larger than an early warning threshold value; resetting a conveying bottom belt control model and recalculating, and if an early warning prompt is still sent, controlling the leaf storage cabinet to stop production and waiting for maintenance of operators by the early warning module;
the abnormality analysis module is used for associating and binding control parameters, production parameters and key component states related to the frequency of the conveying bottom belt as association factors with the leaf storage cabinet production control system; when an abnormal early warning condition occurs, abnormal factors can be rapidly analyzed, positioned and shown.
2. The automatic control system for a conveyor belt of a leaf storage cabinet according to claim 1, wherein:
the method is based on the orthogonal test method:
m1％＝88％，m2％＝4％。
3. the automatic control system for a conveyor belt of a leaf storage cabinet according to claim 1, wherein:
and (3) in the material middle stage of the conveying bottom belt control model (2), the frequency of the conveying bottom belt is theoretical frequency f, and the frequency of the conveying bottom belt is finely adjusted through the state of a quantitative tube photoelectric tube:
when the state of the photoelectric tube is low light and no material exists, the frequency f of the conveying bottom belt is increased by delta f at intervals of t seconds;
when the state of the photoelectric tube is low-light and has materials, the frequency f=f of the conveying bottom belt is treated;
when the state of the photoelectric tube is that the material is low, the material is present for 2 seconds, and the frequency f of the conveying bottom belt is reduced by delta f for the interval time t seconds;
when the state of the photoelectric tube is that the medium light exists for 2 seconds, the frequency f=0 of the conveying bottom belt;
wherein: t is the frequency change interval time of the bottom belt of the leaf storage cabinet; Δf is the stepping frequency of the bottom belt of the leaf storage cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311063254.3A CN117125446A (en) | 2022-06-21 | 2022-06-21 | Automatic control system for conveying bottom belt of leaf storage cabinet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210706026.2A CN115108240B (en) | 2022-06-21 | 2022-06-21 | Automatic control method for conveying bottom belt of leaf storage cabinet |
| CN202311063254.3A CN117125446A (en) | 2022-06-21 | 2022-06-21 | Automatic control system for conveying bottom belt of leaf storage cabinet |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210706026.2A Division CN115108240B (en) | 2022-06-21 | 2022-06-21 | Automatic control method for conveying bottom belt of leaf storage cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117125446A true CN117125446A (en) | 2023-11-28 |
Family
ID=83328133
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311063254.3A Pending CN117125446A (en) | 2022-06-21 | 2022-06-21 | Automatic control system for conveying bottom belt of leaf storage cabinet |
| CN202210706026.2A Active CN115108240B (en) | 2022-06-21 | 2022-06-21 | Automatic control method for conveying bottom belt of leaf storage cabinet |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210706026.2A Active CN115108240B (en) | 2022-06-21 | 2022-06-21 | Automatic control method for conveying bottom belt of leaf storage cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN117125446A (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183280B (en) * | 2011-03-02 | 2012-09-05 | 山东中烟工业有限责任公司 | Statistical principle and PLC technology-based method for measuring and calculating discharge amount of tobacco shred storage cabinet |
| CN106617279B (en) * | 2016-10-12 | 2018-08-17 | 张家口卷烟厂有限责任公司 | The method and device of FREQUENCY CONTROL |
| CN110127325B (en) * | 2019-04-15 | 2020-12-01 | 洪湖市金叶烟草机械有限公司 | Storage cabinet discharging speed control method and system |
| CN112034095B (en) * | 2020-07-10 | 2021-08-20 | 张家口卷烟厂有限责任公司 | System and method for analyzing structure of cut tobacco after online drying |
| CN113086559B (en) * | 2021-04-12 | 2023-09-22 | 河南中烟工业有限责任公司 | Device and method for controlling discharge flow of wire storage cabinet |
-
2022
- 2022-06-21 CN CN202311063254.3A patent/CN117125446A/en active Pending
- 2022-06-21 CN CN202210706026.2A patent/CN115108240B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115108240B (en) | 2023-09-26 |
| CN115108240A (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106647663B (en) | Intelligent production control system for disc pelletizing and control method thereof | |
| DE19751525C2 (en) | Method and device for controlling the initial moisture content of tobacco | |
| JP2002533145A (en) | Apparatus and method for controlling product distribution in a manufacturing process | |
| CN110771943A (en) | Automatic control device and control method for shredding flow | |
| CN206292622U (en) | Disk pelletizing intellectuality production control system | |
| CN106579535A (en) | Tobacco flavoring and feeding system, control method and tobacco shred production system | |
| US7178436B2 (en) | Method of cutting carbon and alloy steel | |
| CN115108240B (en) | Automatic control method for conveying bottom belt of leaf storage cabinet | |
| JPS6027373A (en) | Controller of middle bone mixing ratio in tobacco treating process | |
| CN111165864A (en) | Feeding machine, control method thereof and tobacco shred production equipment | |
| JPH11130484A (en) | Cement raw material preparation control method and device therefor | |
| US4700622A (en) | Apparatus for compressing and solidifying fibrous materials of plants | |
| US5143485A (en) | Transport air control | |
| CN112902667B (en) | Temperature stability control method for fluidized bed roaster | |
| CN112890268A (en) | Automatic control method for material level height of feeding material in shredding system and shredding system | |
| CN110007696B (en) | Automatic bin dumping control system and method | |
| CN110090799B (en) | Multistage winnowing system and control method | |
| CN113080507A (en) | Tobacco shred production system and quality control method | |
| CN113243547B (en) | Automatic speed regulating method and system for tobacco shred perfuming roller | |
| JPH05321182A (en) | Device and method for controlling rotor position of high pressure feeder | |
| JP2957173B1 (en) | Tobacco feeder for cigarette making machine | |
| CN110771935A (en) | Calculation method of 'dehydration standard working point' of KLD-2 cut-tobacco drier | |
| KR100356166B1 (en) | An apparatus and method for controlling hydration of a stainless dust briquet | |
| CN215478407U (en) | Material homogenizing and loosening device of tobacco leaf box-turning feeding machine | |
| CN212180045U (en) | Scattered tobacco homogenizing feeding weighing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |