CN219939694U - Control device of wind power wire feeding system - Google Patents
Control device of wind power wire feeding system Download PDFInfo
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- CN219939694U CN219939694U CN202321497266.2U CN202321497266U CN219939694U CN 219939694 U CN219939694 U CN 219939694U CN 202321497266 U CN202321497266 U CN 202321497266U CN 219939694 U CN219939694 U CN 219939694U
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- 230000001502 supplementing effect Effects 0.000 claims abstract description 36
- 241000208125 Nicotiana Species 0.000 claims abstract description 32
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 32
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003584 silencer Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model discloses a control device of a wind power cut tobacco feeding system, which comprises a cut tobacco feeding pipe between a feeding machine and a cigarette making machine, a return air branch pipe between the cigarette making machine and a return air main pipe and a wind supplementing pipeline connected with the return air branch pipe, wherein the control device comprises a PLC (programmable logic controller), an upper computer, a branch pipe wind pressure detector arranged on the return air branch pipe and a branch pipe wind supplementing valve arranged on the wind supplementing pipeline; the upper computer and the branch pipe air supply valve are respectively connected with the PLC controller by signals, and the branch pipe air pressure detector is connected with the upper computer by signals; and when the wind pressure in the return air branch pipe is larger than a first threshold value, the PLC controls the branch pipe air supplementing valve to be opened. According to the utility model, the air supplementing valve is opened when the air pressure in the air returning branch pipe is larger than the threshold value, so that air supplementing to the air returning branch pipe is realized, otherwise, the air supplementing valve is closed, air supplementing is stopped, so that energy consumption is reduced, frequent actions of the air supplementing valve of the air returning main pipe are avoided, fluctuation of air conveying speed of cut tobacco is reduced, and the cut tobacco shredding rate is reduced while the energy consumption is further reduced.
Description
Technical Field
The utility model relates to the technical field of control, in particular to a control device of a wind power wire feeding system.
Background
The pneumatic cut tobacco conveying system is one of the main modes for realizing automatic cut tobacco conveying for cigarette industry enterprises, adopts a negative pressure suction principle, and conveys cut tobacco from a feeder to a cigarette machine through a closed pipeline. Negative pressure generated by the negative pressure fan is distributed to each negative pressure return branch pipe connected to the return main pipe through the return main pipe, so that wind power conveying of tobacco shreds is realized.
The tobacco shred pneumatic feeding of the cigarette making machine adopts an intermittent working mode, the working period of the primary tobacco shred pneumatic feeding is about 20-30 seconds, the interval time is about 3-5 minutes, and the device has the characteristics of short time, non-continuity and the like. In the tobacco shred conveying process, the wind pressure in each return air branch pipe can generate severe fluctuation, and meanwhile, the wind pressure of the return air main pipe is disturbed, so that the return air branch pipes are mutually disturbed and mutually influenced.
In order to stabilize the air pressure balance in the pipeline, a mode of respectively supplementing air to the return air main pipe and the return air branch pipe is generally adopted, and the following problems exist in actual production: the wind power transmission of the tobacco shreds has randomness and intermittence, so that the wind speed of the return air main pipe and the return air branch pipe is greatly changed. In order to ensure that the wind pressure in the return air main pipe and the return air branch pipes is constant, the air supply valve of the return air main pipe needs to be frequently operated, so that the energy consumption loss is large, the fluctuation of the air supply speed of the cut tobacco is large, and the cut tobacco breakage rate is high.
Disclosure of Invention
The utility model provides a control device of a wind power wire feeding system, which is characterized in that an air supplementing valve is opened when the air pressure in an air returning branch pipe is larger than a threshold value, so that the air supplementing of the air returning branch pipe is realized, the air pressure in the branch pipe is controlled within a highest set value, and when the air pressure in the air returning branch pipe is smaller than or equal to the threshold value, the air supplementing valve is closed, the air supplementing is stopped, so that the energy consumption is reduced, meanwhile, the air pressure in each air returning branch pipe is relatively constant due to the adjustment of the air supplementing valve of each branch pipe, the frequent action of the air supplementing valve of an air returning main pipe is avoided, the fluctuation of the air feeding speed of cut tobacco is reduced, and the broken wire rate of the cut tobacco is reduced while the energy consumption is further reduced.
The utility model provides a control device of a wind power cut tobacco feeding system, which comprises a cut tobacco feeding pipe between a feeding machine and a cigarette making machine, a return air branch pipe between the cigarette making machine and a return air main pipe and a wind supplementing pipeline connected with the return air branch pipe, wherein the control device comprises a PLC (programmable logic controller), an upper computer, a branch pipe wind pressure detector arranged on the return air branch pipe and a branch pipe wind supplementing valve arranged on the wind supplementing pipeline;
the upper computer and the branch pipe air supply valve are respectively connected with the PLC controller by signals, and the branch pipe air pressure detector is connected with the upper computer by signals; and when the wind pressure in the return air branch pipe is larger than a first threshold value, the PLC controls the branch pipe air supplementing valve to be opened.
Preferably, the control device further comprises a first branch pipe wind speed detector arranged on the wire supply pipe, a second branch pipe wind speed detector arranged on the return air branch pipe and a branch pipe wind speed regulating valve arranged on the return air branch pipe;
the first branch pipe wind speed detector and the second branch pipe wind speed detector are respectively connected with an upper computer through signals, the PLC controller determines the air leakage rate according to the wind speed signals of the first branch pipe wind speed detector and the second branch pipe wind speed detector, and the opening degree of the branch pipe wind speed regulating valve is controlled according to the air leakage rate.
Preferably, the PLC controls the branch air supplementing valve to be closed when the branch air speed regulating valve is closed.
Preferably, the control device further comprises a human-computer interface, and the human-computer interface is in signal connection with the PLC controller.
Preferably, the PLC calculates the opening frequency of the branch air supply valve, and controls the human-computer interface to display the alarm prompt information of the opening frequency when the opening frequency is larger than a second threshold value.
Preferably, the PLC controls the human-computer interface to send out yellow alarm information when the air leakage rate is between a third threshold value and a fourth threshold value, and the third threshold value is smaller than the fourth threshold value.
Preferably, the PLC controls the human-computer interface to send out red alarm information when the air leakage rate is larger than the fourth threshold value.
Preferably, the PLC is communicated with the upper computer, the branch air supplementing valve and the branch air speed regulating valve by adopting process field buses respectively, and the upper computer is communicated with the branch air pressure detector, the first branch air speed detector and the second branch air speed detector by adopting process field buses respectively.
Preferably, the air supplementing pipeline is also provided with a silencer.
Preferably, the man-machine interface also displays detection signals of the first branch wind speed detector, the second branch wind speed detector and the branch wind pressure detector.
Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a block diagram of a pneumatic wire feed system provided by the present utility model;
fig. 2 is a structural diagram of a control device of the wind power wire feeding system provided by the utility model.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
The utility model provides a control device of a wind power wire feeding system, which is characterized in that a wind supplementing valve is opened when the wind pressure in a return air branch pipe is larger than a threshold value so as to supplement wind to the return air branch pipe, thereby controlling the wind pressure in the branch pipe within a highest set value and avoiding the problems of tobacco shred blockage, agglomeration, structural damage and the like caused by the over high wind pressure in the pipe; when the wind pressure in the return air branch pipe is smaller than or equal to a threshold value, the air supplementing valve is closed, air supplementing is stopped so as to reduce energy consumption, meanwhile, the wind pressure in each return air branch pipe is relatively constant due to the adjustment of the air supplementing valve of each branch pipe, frequent actions of the air supplementing valve of the return air main pipe are avoided, fluctuation of the air conveying speed of cut tobacco is reduced while the energy consumption is further reduced, and the broken tobacco rate of the cut tobacco is reduced.
As shown in fig. 1, the pneumatic cut tobacco feeding system provided by the utility model comprises a cut tobacco feeding pipe 130 between a feeding machine 110 and a cigarette making machine 120, a return air branch pipe 150 between the cigarette making machine 120 and a return air main pipe 140, and a supplementing air pipeline 160 connected with the return air branch pipe 150.
As shown in fig. 1 and 2, the control device of the wind power wire feeding system provided by the present utility model includes a PLC controller 210, an upper computer 220, a branch wind pressure detector 230 disposed on the return wind branch 150, and a branch wind compensating valve 240 disposed on the wind compensating pipe 160. The control device further includes a first branch wind speed detector 250 provided on the wire supply pipe 130, a second branch wind speed detector 260 provided on the return branch pipe 150, and a branch wind speed adjusting valve 270 provided on the return branch pipe 150, and a main wind speed detector 280, a main wind pressure detector 290, a main wind make-up valve 2100 (not shown in fig. 1), and a main wind speed adjusting valve 2110 (not shown in fig. 1) provided on the return main pipe 140.
The branch pipe wind pressure detector 230 is used to detect wind pressure in the return air branch pipe 150. The first branch wind speed detector 250 and the second branch wind speed detector 260 are used to detect wind speeds in the supply and return wind branches 130 and 150, respectively. The branch air supply valve 240 and the branch air speed adjusting valve 270 are used to adjust the air pressure and the air speed in the return air branch, respectively. The main wind speed detector 280 and the main wind pressure detector 290 are respectively used for detecting wind speed and wind pressure in the return air main. The main pipe air supply valve 2100 and the main pipe air speed adjusting valve 2110 are used for adjusting the air pressure and the air speed in the return air main pipe respectively. The control of wind speed is used for precisely controlling the flow speed of tobacco shreds, and the control of wind pressure can maintain the negative pressure in the return air branch pipe and the tobacco supply pipe within a reasonable range, so that the problems of tobacco shred blockage, pipeline surge and the like are prevented. Branch air supply valve 240 is typically used in combination with branch air speed regulator 270, and main air supply valve 2100 and main air speed regulator 2110 are used in combination to control the speed and quality of tobacco conveyance.
The upper computer 220, the branch air supply valve 240, the branch air speed adjusting valve 270, the main air supply valve 2100 and the main air speed adjusting valve 2110 are respectively connected with the PLC controller 210 in a signal mode, and the branch air pressure detector 230, the first branch air speed detector 250, the second branch air speed detector 260, the main air speed detector 280 and the main air pressure detector 290 are respectively connected with the upper computer 220 in a signal mode. The branch wind pressure detector 230, the first branch wind speed detector 250, the second branch wind speed detector 260, the main wind speed detector 280, and the main wind pressure detector 290 transmit detection signals to the PLC controller 210 through the upper computer 220, respectively. The PLC controller 210 calculates based on these detection signals, and then controls the corresponding valve actions to control the wind speed and wind pressure in the return air branch pipe and the return air main pipe.
As an example, the PLC controller 210 communicates with the upper computer 220, the branch air valve 240, and the branch air speed regulator 270, the main air valve 2100, the main air speed regulator 2110, and the upper computer 220, the branch air pressure detector 230, the first branch air speed detector 250, the second branch air speed detector 260, the main air speed detector 280, and the main air pressure detector 290 using process field buses (PROFIBUS), respectively. The data exchange and cooperative control between the control circuits of the return air branch pipes and the upper computer can be realized through the PROFIBUS, so that the automatic control of the whole wind power wire feeding system is realized.
Preferably, a muffler is further provided on the air supplementing pipe 160. The muffler is arranged at the air outlet of the air supplementing valve, and can absorb and isolate noise through materials such as sound absorbing cotton and sound insulation plates, so that the transmission and reflection of noise are reduced, and the comfort level of the working environment is improved.
The PLC controller 210 controls the branch air supply valve 240 to be opened when the wind pressure in the return air branch pipe 150 is greater than the first threshold value, otherwise, the PLC controller 210 controls the branch air supply valve 240 to be closed, so as to save energy consumption.
The air leakage value of the cigarette making machine refers to the air leakage amount of the cigarette making machine caused by various reasons in the working process, and the air leakage value has great influence on the production efficiency and the product quality of the cigarette making machine, so that accurate measurement and control are required by the air speed detector. The PLC controller 210 determines the air leakage rate according to the wind speed signals of the first and second branch wind speed detectors 250 and 260. As an embodiment, the method for calculating the air leakage rate is as follows: air leakage rate= (wind speed of return branch pipe-wind speed of wire supply pipe)/wind speed of return branch pipe.
The PLC controller 210 controls the opening degree of the branch wind speed adjusting valve 270 according to the air leakage rate.
The PLC controller 210 controls the branch air make-up valve 240 to be closed when the branch air speed adjusting valve 270 is closed, to reduce power consumption.
Preferably, as shown in fig. 2, the control device further includes a human-machine interface (Human Machine Interface, HMI) 2120, and the human-machine interface 2120 is in signal connection with the PLC controller 210. The man-machine interface 2120 is used for setting parameters such as a wind speed threshold value, a wind pressure threshold value and the like in the return air main pipe and the return air branch pipe.
As an example, the wire feeding wind speed can be controlled within the range of 18+/-0.5 m/s, the maximum wind pressure of the return air branch pipe is controlled within-90 to-120 kpa, the smooth control in the tobacco shred conveying process is realized, and the accuracy and the stability of the wind power wire feeding control are improved.
As one embodiment, the PLC controller 210 calculates the opening frequency of the branch air supply valve 240, and controls the man-machine interface 2120 to display the alarm prompt information of the opening frequency when the opening frequency is greater than the second threshold.
As another example, in the present utility model, the human-machine interface 2120 displays the current and average values of the air leakage rate transmitted by the PLC controller 210. In addition, the PLC controller 210 is provided with an over-standard alarm function of the air leakage rate. Preferably, the PLC controller 210 controls the human-machine interface 2120 to emit yellow warning information when the air leakage rate is between a third threshold value and a fourth threshold value, the third threshold value (e.g., 20%) being less than the fourth threshold value (e.g., 35%). The PLC controller 210 controls the man-machine interface 2120 to emit red warning information when the air leakage rate is greater than the fourth threshold.
As yet another example, human-machine interface 2120 also displays the detection signals, preferably the current and average values, of first branch wind speed detector 250, second branch wind speed detector 260, branch wind pressure detector 230, main wind speed detector 280, and main wind pressure detector 290.
The human-computer interface 2120 displays the wind speed, wind pressure, air leakage rate and fault information prompts, so that the operator can conveniently use the device daily and accurately control the production process. Through the operation interface of the HMI, the production process can be accurately controlled, such as adjusting parameters of the air supplementing valve, such as opening degree, air speed and air pressure, so as to realize accurate control of tobacco shred quality and production efficiency.
The utility model can realize the self-adaptive control of the wind power wire feeding system, improve the stability and precision of wire feeding speed and wind pressure, and improve the working efficiency and the product quality. Meanwhile, the controller can be subjected to parameter adjustment and optimization through a man-machine interface so as to adapt to different process requirements and cigarette process characteristics, and the adaptability and the reliability of a control system are improved.
While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. The control device of the wind power cut tobacco feeding system is characterized by comprising a cut tobacco feeding pipe between a feeding machine and a cigarette making machine, a return air branch pipe between the cigarette making machine and a return air main pipe and a wind supplementing pipeline connected with the return air branch pipe, wherein the control device comprises a PLC (programmable logic controller), an upper computer, a branch pipe wind pressure detector arranged on the return air branch pipe and a branch pipe wind supplementing valve arranged on the wind supplementing pipeline;
the upper computer and the branch pipe air supply valve are respectively connected with the PLC controller in a signal mode, and the branch pipe air pressure detector is connected with the upper computer in a signal mode; and the PLC controls the branch air supply valve to be opened when the wind pressure in the return air branch pipe is larger than a first threshold value.
2. The control device of a wind power wire feeding system according to claim 1, further comprising a first branch wind speed detector provided on the wire supply pipe, a second branch wind speed detector provided on the return branch pipe, and a branch wind speed adjusting valve provided on the return branch pipe;
the first branch pipe wind speed detector and the second branch pipe wind speed detector are respectively connected with the upper computer through signals, and the PLC controller determines the air leakage rate according to the wind speed signals of the first branch pipe wind speed detector and the second branch pipe wind speed detector and controls the opening of the branch pipe wind speed regulating valve according to the air leakage rate.
3. The control device of a wind power wire feeding system according to claim 2, wherein the PLC controller controls the branch air supply valve to be closed when the branch air speed adjusting valve is closed.
4. The control device of a pneumatic wire feed system of claim 2, further comprising a human-machine interface in signal connection with the PLC controller.
5. The control device of the wind power wire feeding system according to claim 4, wherein the PLC calculates the opening frequency of the branch air supply valve, and controls the man-machine interface to display the alarm prompt information of the opening frequency when the opening frequency is larger than a second threshold value.
6. The control device of the wind power wire feeding system according to claim 4, wherein the PLC controller controls the human-machine interface to emit yellow warning information when the air leakage rate is between a third threshold value and a fourth threshold value, and the third threshold value is smaller than the fourth threshold value.
7. The control device of the wind power wire feeding system according to claim 6, wherein the PLC controller controls the human-machine interface to emit red warning information when the air leakage rate is greater than the fourth threshold value.
8. The control device of the wind power wire feeding system according to claim 2, wherein the PLC is communicated with the upper computer, the branch air supply valve and the branch wind speed regulating valve by adopting a process field bus respectively, and the upper computer is communicated with the branch wind pressure detector, the first branch wind speed detector and the second branch wind speed detector by adopting a process field bus respectively.
9. The control device of a wind power wire feeding system according to claim 1, wherein a silencer is further arranged on the air supplementing pipeline.
10. The control device of a wind power feeding system according to claim 4, wherein the man-machine interface further displays detection signals of the first branch wind speed detector, the second branch wind speed detector, and the branch wind pressure detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321497266.2U CN219939694U (en) | 2023-06-12 | 2023-06-12 | Control device of wind power wire feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321497266.2U CN219939694U (en) | 2023-06-12 | 2023-06-12 | Control device of wind power wire feeding system |
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| Publication Number | Publication Date |
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| CN219939694U true CN219939694U (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321497266.2U Active CN219939694U (en) | 2023-06-12 | 2023-06-12 | Control device of wind power wire feeding system |
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| CN (1) | CN219939694U (en) |
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2023
- 2023-06-12 CN CN202321497266.2U patent/CN219939694U/en active Active
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