A method and system for controlling the frequency of a throwing motor of a tobacco shred air classifier

Abstract

The application discloses a kind of methods for controlling tobacco shred air separator throwing motor frequency, comprising: obtaining the current flow value of tobacco shred to be entered into tobacco shred air separator;Calculate the first difference value of current flow value and the preset flow value of tobacco shred to be entered into tobacco shred air separator;Determine whether the current thickness value of tobacco shred to be entered into tobacco shred air separator is obtained according to the first difference value;If the current thickness value of tobacco shred to be entered into tobacco shred air separator is obtained, then calculate the second difference value of current thickness value and the preset thickness value of tobacco shred to be entered into tobacco shred air separator;The current throwing motor frequency of tobacco shred air separator is adjusted according to the first difference value and the second difference value.The application can quickly achieve on-site air separation outlet stem signature rejection rate, and the precision control of the amount of silk in the rejected stem signature is realized.The application also provides a system and device for controlling tobacco shred air separator throwing motor frequency, and tobacco shred processing equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the tobacco processing technical field, and particularly relates to a method and system for controlling the frequency of a throwing motor of a tobacco leaf air separator. BACKGROUND

[0002] A two-stage tobacco leaf air separator is widely used in cigarette production enterprises to remove stems from tobacco leaves. The two-stage tobacco leaf air separator is composed of a first-stage air separator and a second-stage air separator. In the tobacco processing, the tobacco leaves are initially selected by the first-stage air separator, and the stems and a small amount of tobacco leaves falling from the first-stage air separator are quantified and then enter the second-stage air separator for further selection, so as to remove the stems and improve the purity of the tobacco leaves.

[0003] In the process of the tobacco leaf air separation, the tobacco leaves enter the first-stage tobacco leaf air separator, and the tobacco leaves have an initial speed under the conveying of the throwing motor. The lighter materials are thrown to the far end of the first-stage air separator, and the throwing distance is the farthest. The heavier stems are thrown to the middle of the first-stage air separator, and the throwing distance is moderate. The stems are further reduced in the tearing and beating of the upper conveying roller and the upper thinning roller. The heaviest tobacco leaves are thrown to the near end of the first-stage air separator, and the tobacco leaves are further scattered and selected in the tearing and beating of the lower conveying roller and the lower thinning roller.

[0004] At present, the fixed throwing motor frequency is used in the production of the same cigarette brand in the tobacco processing of the cigarette production enterprises, which cannot effectively remove the stems and increases the burden of the cigarette machine. Or the amount of the usable tobacco leaves in the removed stems is increased, and the material waste is increased. SUMMARY

[0005] The present application aims to solve the problem that the stems cannot be effectively removed or the amount of the tobacco leaves in the removed stems is large in the air separation process. The present application provides a method and system for controlling the frequency of the throwing motor of the tobacco leaf air separator, which can quickly achieve the accurate control of the outlet stem removal rate and the amount of the tobacco leaves in the removed stems, realize the automatic control, reduce the human intervention, and improve the purity of the finished tobacco leaves.

[0006] To solve the above technical problem, the embodiment of the present application discloses a method for controlling the frequency of the throwing motor of the tobacco leaf air separator, which comprises the following steps.

[0007] obtaining a current flow value of the tobacco leaves to be entered into the tobacco leaf air separator;

[0008] calculating a first difference value between the current flow value and a preset flow value of the tobacco leaves to be entered into the tobacco leaf air separator;

[0009] judging whether a current thickness value of the tobacco leaves to be entered into the tobacco leaf air separator is obtained according to the first difference value;

[0010] if the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator is obtained, a second difference value between the obtained current thickness value and the preset thickness value is calculated;

[0011] the current throwing motor frequency of the tobacco shreds air aspirator is adjusted according to the first difference value and the second difference value.

[0012] According to the above technical scheme, the current flow value of the tobacco shreds to be entered into the tobacco shreds air aspirator is obtained, and the obtained current flow value is compared with the preset flow value to obtain a first difference value. Whether the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator needs to be obtained is determined according to the first difference value. If the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator needs to be obtained, after the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator is obtained, a second difference value between the obtained current thickness value and the preset thickness value is calculated. The current throwing motor frequency of the tobacco shreds air aspirator is adjusted according to the first difference value and the second difference value. If the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator does not need to be obtained, the current throwing motor frequency of the tobacco shreds air aspirator does not need to be adjusted. Therefore, according to the above control method, whether the motor frequency needs to be adjusted is determined according to the flow difference value and the thickness difference value of the incoming material. The throwing distance and the wind receiving area of the material are changed by changing the motor frequency, so that the problem caused by the large flow fluctuation of the incoming material at the front end of the material can be solved. The precision control of the outlet stem and thread removal rate and the content of the removed stem and thread can be quickly achieved. The automatic control is realized, the human intervention is reduced, and the purity of the finished tobacco shreds is improved.

[0013] According to another specific embodiment of the present application, whether the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator is obtained according to the first difference value, comprising:

[0014] if the first difference value is within the flow preset interval range, the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator is not obtained;

[0015] if the first difference value is greater than the upper limit value of the flow preset interval or less than the lower limit value of the flow preset interval, the current thickness value of the tobacco shreds to be entered into the tobacco shreds air aspirator is obtained.

[0016] According to another specific embodiment of the present application, the current throwing motor frequency of the tobacco shreds air aspirator is adjusted according to the first difference value and the second difference value, comprising:

[0017] if the first difference value is within the flow preset interval range, the current throwing motor frequency of the tobacco shreds air aspirator is adjusted to be equal to the preset throwing motor frequency;

[0018] if the first difference value is greater than the upper limit value of the flow preset interval range and the second difference value is greater than the upper limit value of the thickness preset interval range, the current throwing motor frequency of the tobacco shreds air aspirator is adjusted to be greater than the preset throwing motor frequency;

[0019] If the first difference is less than the lower limit value of the flow preset interval range and the second difference is less than the lower limit value of the thickness preset interval range, the current throwing motor frequency of the cut tobacco air separator is adjusted to be less than the preset throwing motor frequency.

[0020] According to another specific embodiment of the present application,

[0021] If the calculated first difference is within the flow preset interval range, the current throwing motor frequency of the cut tobacco air separator is adjusted to be equal to the preset throwing motor frequency after a preset time;

[0022] If the calculated first difference is greater than the upper limit value of the flow preset interval and the second difference is greater than the upper limit value of the thickness preset interval, the current throwing motor frequency of the cut tobacco air separator is adjusted to be greater than the preset throwing motor frequency after a preset time;

[0023] If the calculated first difference is less than the lower limit value of the flow preset interval and the second difference is less than the lower limit value of the thickness preset interval, the current throwing motor frequency of the cut tobacco air separator is adjusted to be less than the preset throwing motor frequency after a preset time.

[0024] According to another specific embodiment of the present application, adjusting the current throwing motor frequency of the cut tobacco air separator according to the first difference and the second difference comprises:

[0025] If the first difference is a kg / h and the second difference is b mm, the current throwing motor frequency of the cut tobacco air separator is adjusted so that the difference between the current throwing motor frequency of the cut tobacco air separator and the preset throwing motor frequency of the cut tobacco air separator is e%; wherein the flow preset interval is [-100, 100] and the thickness preset interval is [-5, 5],

[0026] When a is within the range of [-100, 100], e = 0;

[0027] When a is within the range of (100, 200] and b is within the range of (5, 10], the value range of e is [0.5, 1];

[0028] When a is within the range of (200, 350] and b is within the range of (10, 15], the value range of e is (1, 2];

[0029] When a is within the range of [-200, -100) and b is within the range of [-10, -5), the value range of e is [-1, -0.5];

[0030] When a is within the range of [-350, -200) and b is within the range of [-15, -10), the value range of e is [-2, -1);

[0031] -350≤a≤350; -15≤b≤-5 or 5≤b≤15; -2≤e≤2.

[0032] According to another specific embodiment of the present application, the cut tobacco wind separator receives the cut tobacco output from the cut tobacco dryer, the current flow value of the cut tobacco to be input into the cut tobacco wind separator refers to the current flow value of the cut tobacco at the inlet of the cut tobacco dryer, and the current thickness value of the cut tobacco to be input into the cut tobacco wind separator refers to the current thickness value of the cut tobacco at the inlet of the cut tobacco wind separator.

[0033] The embodiment of the present application further discloses a system for controlling the frequency of the material throwing motor of the cut tobacco wind separator based on the above control method, comprising:

[0034] a cut tobacco flow value acquisition module, configured to acquire the current flow value of the cut tobacco to be input into the cut tobacco wind separator;

[0035] a first calculation module, connected with the cut tobacco flow value acquisition module, configured to calculate a first difference between the current flow value and a preset flow value of the cut tobacco to be input into the cut tobacco wind separator;

[0036] a material thickness acquisition module, connected with the first calculation module, configured to acquire the current thickness value of the cut tobacco to be input into the cut tobacco wind separator according to the first difference;

[0037] a second calculation module, configured to calculate a second difference between the current thickness value and a preset thickness value of the cut tobacco to be input into the cut tobacco wind separator after the material thickness acquisition module acquires the current thickness value of the cut tobacco to be input into the cut tobacco wind separator;

[0038] a material throwing motor frequency adjustment module, connected with the first calculation module and the second calculation module respectively, configured to adjust the current frequency of the material throwing motor of the cut tobacco wind separator according to the first difference and the second difference.

[0039] The embodiment of the present application further discloses a device for controlling the frequency of the material throwing motor of the cut tobacco wind separator, comprising

[0040] a memory, configured to store instructions;

[0041] a processor, configured to execute the instructions, so that the device for controlling the frequency of the material throwing motor of the cut tobacco wind separator performs the operations of the above method for controlling the frequency of the material throwing motor of the cut tobacco wind separator.

[0042] The embodiment of the present application further discloses a cut tobacco processing equipment, comprising the above system for controlling the frequency of the material throwing motor of the cut tobacco wind separator or the above device for controlling the frequency of the material throwing motor of the cut tobacco wind separator.

[0043] The cut tobacco processing equipment disclosed by the embodiment of the present application further comprises:

[0044] a cut tobacco dryer, configured to dry raw cut tobacco;

[0045] The throwing mechanism comprises a throwing motor, and is used for receiving cut tobacco from the tobacco cutting machine;

[0046] The cut tobacco air separator is used for receiving the cut tobacco thrown from the throwing mechanism;

[0047] The system for controlling the frequency of the throwing motor of the cut tobacco air separator or the device for controlling the frequency of the throwing motor of the cut tobacco air separator is communicatively connected with the tobacco cutting machine, and is used for collecting the material flow at the inlet of the tobacco cutting machine;

[0048] The system for controlling the frequency of the throwing motor of the cut tobacco air separator or the device for controlling the frequency of the throwing motor of the cut tobacco air separator is communicatively connected with the cut tobacco air separator, and is used for collecting the material thickness at the inlet of the cut tobacco air separator;

[0049] The system for controlling the frequency of the throwing motor of the cut tobacco air separator or the device for controlling the frequency of the throwing motor of the cut tobacco air separator is communicatively connected with the throwing mechanism, and is used for controlling the frequency of the throwing motor.

[0050] The embodiment of the present application further discloses a computer readable storage medium, which stores computer instructions, and the instructions are executed by a processor to realize the method for controlling the frequency of the throwing motor of the cut tobacco air separator.

[0051] The present application has the beneficial effect that the problem of unstable air separation and material flow caused by large flow fluctuation can be solved from the front end of incoming materials, the precision control of the outlet stem removal rate and the content of cut tobacco in the removed stems can be quickly achieved, automatic control is realized, human intervention is reduced, and the purity of finished cut tobacco is improved. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 A flow chart of a method for controlling the frequency of a throwing motor of a cut tobacco air separator provided by an embodiment of the present application is shown;

[0053] Figure 2 A structural block diagram of a system for controlling the frequency of a throwing motor of a cut tobacco air separator provided by an embodiment of the present application is shown;

[0054] Figure 3 A structural block diagram of a device for controlling the frequency of a throwing motor of a cut tobacco air separator provided by an embodiment of the present application is shown;

[0055] Figure 4 A schematic diagram of a cut tobacco processing device provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0056] The following detailed description together with the accompanying drawings will provide a fuller understanding of the application. Although the application is described with reference to the preferred embodiment, those skilled in the art will readily appreciate that the detailed description and drawings are by way of illustration only. Merely by way of example, the description of the application is not intended to limit the scope of the application to particular embodiments described herein. The description of the application together with the drawings will provide those of ordinary skill in the art with a complete understanding of the application. The application is not limited to the particular embodiments described herein. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. The detailed description is presented only for the purpose of providing a thorough understanding of the application. Those of ordinary skill in the art will realize that the application can be practiced with

[0057] It should be noted that in this specification, similar reference numbers and letters in the drawings represent similar items, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0058] The terms "first", "second", and the like, are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0059] In the description of the present embodiments, it should also be noted that unless specifically defined and limited, the terms "set", "connected", "connected", should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiments can be understood according to the specific circumstances.

[0060] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0061] The working principle of the cut tobacco air separation equipment is that: the cut tobacco is uniformly laid into the separation box through the feed vibration tank, and then is floated and separated under the action of lateral air inlet, because the density and wind area of the separated objects are different, the falling distance of the separated objects is different, and the separated objects are floated and separated. After the cut tobacco expansion equipment, two-stage air separation of cut tobacco is used, which can effectively separate out the agglomerates (lumps, silk balls, etc.) and most of the stems, and improve the purity of cut tobacco or stem.

[0062] The applicant discovered that during the leaf separation process, when the frequency of the throwing motor is fixed, changes in the incoming material flow rate will cause instability in the primary separation material flow rate. Fluctuations in the primary separation material flow rate will affect fluctuations in the secondary separation material flow rate, resulting in the inability to effectively remove stems and other materials that should be discarded, increasing the burden on the cigarette machine; or, the amount of usable leaf material among the discarded materials will increase, leading to material waste.

[0063] For example, if the flow rate increases while other air separation conditions remain unchanged, the material entering the air separation equipment instantaneously will become thicker. If the material is clumped together, it will be difficult to achieve the expected air separation effect even if the damper opening or the wind force is adjusted. Therefore, the applicant creatively thought of solving the above problem at the front end of the material supply by adjusting the frequency of the throwing motor to achieve the expected air separation effect.

[0064] like Figure 1 As shown, Figure 1 A flowchart illustrating a method for controlling the frequency of the throwing motor in a blade-fence air classifier according to an embodiment of the present invention is shown. In this embodiment, the method for controlling the frequency of the throwing motor in the blade-fence air classifier includes the following steps:

[0065] Step 11: Obtain the current flow rate of the blades to be entered into the blade air separator;

[0066] Step 12: Calculate the first difference between the current flow rate and the preset flow rate of the blades to be entered into the blade air separator;

[0067] Step 13: Determine whether to obtain the current thickness value of the blades to be entered into the blade air classifier based on the first difference;

[0068] Step 14: If the current thickness value of the blades to be entered into the blade air classifier is obtained, calculate the second difference between the current thickness value and the preset thickness value of the blades to be entered into the blade air classifier.

[0069] Step 15: Adjust the current throwing motor frequency of the blade air classifier based on the first difference and the second difference.

[0070] According to the control method, whether the motor frequency is adjusted is determined according to the flow difference and the thickness difference of the incoming material, the material throwing distance and the wind receiving area are changed by changing the motor frequency, the problem caused by the large flow fluctuation of the incoming material can be solved at the front end of the incoming material, the accurate control of the outlet stem signature removal rate and the content of the removed stem signature can be quickly achieved, the automatic control is realized, the human intervention is reduced, and the purity of the finished cut tobacco is improved.

[0071] Further, whether the current thickness value of the cut tobacco to be entered into the cut tobacco air classifier is acquired according to the first difference value, comprising:

[0072] If the first difference value is within the preset flow interval range, the current thickness value of the cut tobacco to be entered into the cut tobacco air classifier is not acquired.

[0073] If the first difference value is greater than the upper limit value of the preset flow interval or less than the lower limit value of the preset flow interval, the current thickness value of the cut tobacco to be entered into the cut tobacco air classifier is acquired.

[0074] According to the technical scheme, firstly, whether the incoming material flow fluctuation is within a normal range is determined, if the incoming material flow fluctuation is within the normal range, the material thickness value of the cut tobacco to be entered into the cut tobacco air classifier is not calculated, and if the incoming material flow fluctuation is not within the normal range, the material thickness value of the cut tobacco to be entered into the cut tobacco air classifier is acquired.

[0075] After the cut tobacco enters the cut tobacco drying machine, the material is thrown into the first cut tobacco air classifier by the throwing motor, the first cut tobacco air classifier separates the stem signature primary material from the cut tobacco, and the stem signature is separated from the stem signature primary material after entering the second cut tobacco air classifier. Since the cut tobacco needs a certain distance from the drying machine entrance to the cut tobacco air classifier entrance, the material flow may change at the cut tobacco air classifier, and therefore the material flow change of the cut tobacco air classifier can be further determined, so as to adjust the frequency of the throwing motor according to the material flow, and realize accurate control.

[0076] Further, the current throwing motor frequency of the cut tobacco air classifier is adjusted according to the first difference value and the second difference value, comprising:

[0077] if the first difference is within the preset flow range, adjusting the current throwing motor frequency of the cut tobacco air separator to be equal to the preset throwing motor frequency;

[0078] if the first difference is greater than the upper limit of the preset flow range and the second difference is greater than the upper limit of the preset thickness range, adjusting the current throwing motor frequency of the cut tobacco air separator to be greater than the preset throwing motor frequency;

[0079] if the first difference is less than the lower limit of the preset flow range and the second difference is less than the lower limit of the preset thickness range, adjusting the current throwing motor frequency of the cut tobacco air separator to be less than the preset throwing motor frequency.

[0080] By comparing the collected material flow value with the preset flow value and comparing the collected material thickness value with the preset thickness value, and adjusting the motor frequency according to the comparison result, the throwing distance and the wind receiving area of the material are changed, which can effectively control the stem removal rate of the cut tobacco air separator and the silk content in the removed stems, thereby ensuring the air separation effect.

[0081] Further, if the calculated first difference is within the preset flow range, adjusting the current throwing motor frequency of the cut tobacco air separator to be equal to the preset throwing motor frequency after a preset time;

[0082] if the calculated first difference is greater than the upper limit of the preset flow range and the second difference is greater than the upper limit of the preset thickness range, adjusting the current throwing motor frequency of the cut tobacco air separator to be greater than the preset throwing motor frequency after a preset time;

[0083] if the calculated first difference is less than the lower limit of the preset flow range and the second difference is less than the lower limit of the preset thickness range, adjusting the current throwing motor frequency of the cut tobacco air separator to be less than the preset throwing motor frequency after a preset time.

[0084] Since the cut tobacco needs a certain time from the entrance of the cut tobacco machine to the entrance of the cut tobacco air separator, the change in material flow at the entrance of the cut tobacco machine needs a certain time to be reflected at the cut tobacco air separator. The method of the above embodiment adjusts the frequency of the throwing motor after a preset time, thereby changing the throwing distance and the wind receiving area of the material, which can achieve precise control of the stem removal rate of the cut tobacco air separator and the silk content in the removed stems.

[0085] Further, adjusting the current throwing motor frequency of the cut tobacco air separator according to the first difference and the second difference includes:

[0086] If the first difference is a kg / h and the second difference is b mm, adjust the current throwing motor frequency of the blade air classifier so that the difference between the current throwing motor frequency and the preset throwing motor frequency of the blade air classifier is e%; where the preset flow rate range is [-100, 100] and the preset thickness range is [-5, 5].

[0087] When a is in the range [-100, 100], then e = 0;

[0088] When a is in the range (100, 200] and b is in the range (5, 10], then the range of e is [0.5, 1].

[0089] When a is in the range (200, 350] and b is in the range (10, 15], then the range of e is (1, 2].

[0090] When a is in the range [-200, -100) and b is in the range [-10, -5)], then the range of e is [-1, -0.5].

[0091] When a is in the range [-350, -200) and b is in the range [-15, -10) then the range of e is [-2, -1);

[0092] -350≤a≤350; -15≤b≤-5 or 5≤b≤15; -2≤e≤2.

[0093] By adopting the above technical solution, the stem removal rate and the fiber content in the removed stems of the leaf-fiber air separator can be more accurately controlled within the design range.

[0094] Furthermore, after the leaf filaments are output from the drying machine, they are thrown into the leaf filament air classifier by the throwing motor of the throwing mechanism. The leaf filament air classifier receives the leaf filaments output from the drying machine. The current flow rate of the leaf filaments entering the leaf filament air classifier refers to the current flow rate of the leaf filaments at the inlet of the drying machine, and the current thickness of the leaf filaments entering the leaf filament air classifier refers to the current thickness of the leaf filaments at the inlet of the leaf filament air classifier.

[0095] Figure 2 This diagram illustrates a structural block diagram of a system for controlling the frequency of the throwing motor in a blade air classifier according to an embodiment of the present invention. Figure 2 As shown, a system for controlling the frequency of the throwing motor in a leaf-flesh air classifier includes:

[0096] The blade flow rate acquisition module 21 is used to acquire the current flow rate value of the blades to be entered into the blade air separator;

[0097] The first calculation module 22 is connected to the blade flow rate value acquisition module 21 and is used to calculate the first difference between the current flow rate value and the preset flow rate value of the blades to be entered into the blade air separator.

[0098] The material thickness acquisition module 23 is connected with the first calculation module 22, and is configured to acquire a current thickness value of the tobacco shreds to be input into the tobacco shreds air classer according to the first difference value;

[0099] The second calculation module 24 is configured to calculate a second difference value between the current thickness value and a preset thickness value of the tobacco shreds to be input into the tobacco shreds air classer after the material thickness acquisition module 23 acquires the current thickness value of the tobacco shreds to be input into the tobacco shreds air classer;

[0100] The material throwing motor frequency adjustment module 25 is connected with the first calculation module 22 and the second calculation module 24 respectively, and is configured to adjust the current material throwing motor frequency of the tobacco shreds air classer according to the first difference value and the second difference value.

[0101] Figure 3 A structural block diagram of a device for controlling the frequency of a material throwing motor of a tobacco shreds air classer is shown according to an embodiment of the present application. As shown in the figure, Figure 3 The device for controlling the frequency of the material throwing motor of the tobacco shreds air classer comprises

[0102] The memory 31 is configured to store instructions;

[0103] The processor 32 is configured to execute the instructions, so that the device for controlling the frequency of the material throwing motor of the tobacco shreds air classer performs the operations of the above method for controlling the frequency of the material throwing motor of the tobacco shreds air classer.

[0104] The device for controlling the frequency of the material throwing motor of the tobacco shreds air classer described above can be implemented as a general processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof.

[0105] Figure 4 A schematic diagram of a tobacco shreds processing equipment is shown according to an embodiment of the present application. As shown in the figure, Figure 4 The tobacco shreds processing equipment comprises a system for controlling the frequency of a material throwing motor of a tobacco shreds air classer, or a device 44 for controlling the frequency of the material throwing motor of the tobacco shreds air classer.

[0106] Further, in the present embodiment, the tobacco shreds processing equipment further comprises:

[0107] The cut tobacco drying machine 41 is configured to dry raw tobacco shreds;

[0108] The material throwing mechanism 42 comprises a material throwing motor, and is configured to receive the tobacco shreds output from the cut tobacco drying machine 41;

[0109] The tobacco shreds air classer 43 is configured to receive the tobacco shreds thrown out from the material throwing mechanism 42.

[0110] The device 44 for controlling the frequency of the throwing motor of the cut tobacco air separator;

[0111] The device 44 for controlling the frequency of the throwing motor of the cut tobacco air separator is in communication with the tobacco cutter 41, and is used to collect the material flow at the inlet of the tobacco cutter 41;

[0112] The device 44 for controlling the frequency of the throwing motor of the cut tobacco air separator is in communication with the cut tobacco air separator 43, and is used to collect the material thickness at the inlet of the cut tobacco air separator 43;

[0113] The device 44 for controlling the frequency of the throwing motor of the cut tobacco air separator is in communication with the throwing mechanism 42, and is used to control the frequency of the throwing motor.

[0114] The embodiment of the present application further discloses a computer readable storage medium, which stores computer instructions, and the instructions are executed by a processor to realize the method for controlling the frequency of the throwing motor of the cut tobacco air separator.

[0115] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is a further illustration of the application in connection with the particular embodiments and is not intended to limit the application to the particular embodiments. Various modifications can be made in the form and details of the application without departing from the spirit and scope of the application.

Claims

1. A method for controlling the frequency of the throwing motor in a blade air classifier, characterized in that, The leaf filament air classifier is used to receive leaf filaments thrown out by the throwing mechanism, the throwing mechanism including the throwing motor, and the method includes: Obtain the current flow rate of the blades to be entered into the blade air separator; Calculate the first difference between the current flow rate value and the preset flow rate value of the blades to be entered into the blade air separator; Determining whether to obtain the current thickness value of the blades to be entered into the blade air classifier based on the first difference includes: if the first difference is within the preset flow range, then the current thickness value of the blades to be entered into the blade air classifier is not obtained; if the first difference is greater than the upper limit of the preset flow range or less than the lower limit of the preset flow range, then the current thickness value of the blades to be entered into the blade air classifier is obtained. If the current thickness value of the blades to be entered into the blade air classifier is obtained, then calculate the second difference between the current thickness value and the preset thickness value of the blades to be entered into the blade air classifier. Adjust the current throwing motor frequency of the blade air classifier based on the first difference and the second difference; The leaf filament air classifier receives leaf filaments output from the drying machine. The current flow rate of the leaf filaments to be entered into the leaf filament air classifier refers to the current flow rate of the leaf filaments at the inlet of the drying machine. The current thickness of the leaf filaments to be entered into the leaf filament air classifier refers to the current thickness of the leaf filaments at the inlet of the leaf filament air classifier.

2. The method according to claim 1, characterized in that, The step of adjusting the current throwing motor frequency of the blade air classifier based on the first difference and the second difference includes: If the first difference is within the preset flow range, then adjust the current throwing motor frequency of the blade air classifier to be equal to the preset throwing motor frequency. If the first difference is greater than the upper limit of the preset range of flow rate, and the second difference is greater than the upper limit of the preset range of thickness, then the current throwing motor frequency of the blade air classifier is adjusted to be greater than the preset throwing motor frequency. If the first difference is less than the lower limit of the preset flow rate range and the second difference is less than the lower limit of the preset thickness range, then the current throwing motor frequency of the blade air classifier is adjusted to be less than the preset throwing motor frequency.

3. The method according to claim 1, characterized in that, If the calculated first difference is within the preset flow range, then after a preset time, adjust the current throwing motor frequency of the blade air classifier to be equal to the preset throwing motor frequency. If the calculated first difference is greater than the upper limit of the preset flow range, and the calculated second difference is greater than the upper limit of the preset thickness range, then after a preset time, the current throwing motor frequency of the blade air classifier will be adjusted to be greater than the preset throwing motor frequency. If the calculated first difference is less than the lower limit of the preset flow rate range, and the calculated second difference is less than the lower limit of the preset thickness range, then after a preset time, the current throwing motor frequency of the blade air classifier will be adjusted to be less than the preset throwing motor frequency.

4. The method according to claim 1, characterized in that, The step of adjusting the current throwing motor frequency of the blade air classifier based on the first difference and the second difference includes: If the first difference is a kg / h and the second difference is b mm, adjust the current throwing motor frequency of the blade air classifier so that the difference between the current throwing motor frequency and the preset throwing motor frequency of the blade air classifier is e%; wherein the preset flow rate range is [-100, 100] and the preset thickness range is [-5, 5]. When a is in the range [-100, 100], then e = 0; When a is in the range (100, 200] and b is in the range (5, 10], then the range of e is [0.5, 1]. When a is in the range (200, 350] and b is in the range (10, 15], then the range of e is (1, 2]. When a is in the range [-200, -100) and b is in the range [-10, -5)], then the range of e is [-1, -0.5]. When a is in the range [-350, -200) and b is in the range [-15, -10) then the range of e is [-2, -1); -350≤a≤350; -15≤b≤-5 or 5≤b≤15; -2≤e≤2.

5. A system for controlling the frequency of the throwing motor in a leaf-fracturing air classifier, characterized in that, The system for implementing the method as described in any one of claims 1 to 4 includes: The blade flow rate acquisition module is used to acquire the current flow rate of the blades to be entered into the blade air separator; The first calculation module is connected to the blade flow rate acquisition module and is used to calculate the first difference between the current flow rate and the preset flow rate of the blades to be entered into the blade air separator. The material thickness acquisition module is connected to the first calculation module and is used to determine whether to acquire the current thickness value of the blades to be entered into the blade air classifier based on the first difference. The second calculation module is used to calculate a second difference between the current thickness value and the preset thickness value of the blades to be entered into the blade air classifier after the material thickness acquisition module has acquired the current thickness value of the blades to be entered into the blade air classifier. The material throwing motor frequency adjustment module is connected to the first calculation module and the second calculation module respectively, and is used to adjust the current material throwing motor frequency of the blade wind classifier according to the first difference and the second difference.

6. A device for controlling the frequency of the throwing motor in a leaf-fracturing air classifier, characterized in that, include: Memory, used to store instructions; A processor for executing the instructions to cause the means for controlling the frequency of the discharge motor of the blade air classifier to perform operations that implement the method as described in any one of claims 1-4.

7. A leaf fiber processing device, characterized in that, This includes the system for controlling the frequency of the throwing motor of the leaf filament air classifier as described in claim 5, or the device for controlling the frequency of the throwing motor of the leaf filament air classifier as described in claim 6.

8. The leaf fiber processing equipment according to claim 7, characterized in that, Also includes: A filament drying machine is used to dry raw material filaments; A feeding mechanism for receiving filaments output from a filament drying machine; Among them, the system or device for controlling the frequency of the throwing motor of the leaf filament air classifier is connected in communication with the drying machine and is used to collect the material flow rate at the inlet of the drying machine. The system or device for controlling the frequency of the throwing motor of the leaf filament air classifier is connected in communication with the leaf filament air classifier and is used to collect the material thickness at the inlet of the leaf filament air classifier. The system or device for controlling the frequency of the throwing motor of the leaf filament air classifier is connected in communication with the throwing mechanism to control the frequency of the throwing motor.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the method as described in any one of claims 1-4.

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