CN116817581A - Dryer steam valve group control system based on photoelectric sensing signal monitoring - Google Patents
Dryer steam valve group control system based on photoelectric sensing signal monitoring Download PDFInfo
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- CN116817581A CN116817581A CN202311046722.6A CN202311046722A CN116817581A CN 116817581 A CN116817581 A CN 116817581A CN 202311046722 A CN202311046722 A CN 202311046722A CN 116817581 A CN116817581 A CN 116817581A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 90
- 238000001035 drying Methods 0.000 claims abstract description 45
- 230000003993 interaction Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000013480 data collection Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 5
- 241000411851 herbal medicine Species 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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- 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]
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Abstract
The invention discloses a control system for a steam valve group of a dryer based on photoelectric sensing signal monitoring, which monitors the size of a material pile to be dried and the temperature of an outlet material after drying, controls the opening and closing degree of the steam valve group through a valve controller, and performs double regulation on steam flow, so that the drying of the material can be ensured, and meanwhile, heat waste is avoided. The automatic drying machine is characterized by comprising a drying machine, photoelectric sensing gratings, temperature sensors, a valve controller and a control background, wherein signal interaction is established between the photoelectric sensing gratings and the control background, signal interaction is established between the temperature sensors and the control background, signal interaction is established between the control background and the valve controller, the drying machine comprises at least two drying areas, the photoelectric sensing gratings are arranged on two sides of an inlet of the drying machine and used for detecting whether materials exist on a conveying belt and measuring the sizes of the materials, and the temperature sensors are arranged at outlets of the drying areas.
Description
Technical Field
The invention discloses a control system of a steam valve group of a dryer based on photoelectric sensing signal monitoring, relates to a control system for adjusting the steam valve group of the dryer by monitoring photoelectric sensing signals of materials, belongs to the technical field of dryers, and particularly relates to a control system capable of detecting whether materials exist or not and measuring the size of a material pile, controlling the opening and closing degree of the steam valve group according to the detection results, adjusting steam flow, guaranteeing material drying and avoiding heat waste.
Background
In the processing process of products such as food, chinese herbal medicine, etc. in order to keep the quality of product to and the long-term storage of product need dry the product, the most commonly used dry mode at present just uses the belt dryer to dry it, fruit vegetables, chinese herbal medicine, marine product and bean products contain the wet material of certain moisture and spread on the conveyer belt through the hopper, get into in the dryer through the transportation of conveyer belt, it is dry to the dryer through the steam valves in letting in steam, nevertheless the material spread when spreading on the conveyer belt through the hopper easily spread inhomogeneous for the thickness of material pile is different, and steam flow is generally fixed unchangeable, leads to the material in the material pile to be hardly thoroughly dried, and when the hopper blocks up simultaneously, the material pile is easy intermittent and continuous, and the dryer is in the state of operation always, causes the heat extravagant.
Publication number CN212692440U discloses a multilayer guipure stoving line of two kinds of modes of blowing, including a stoving case, the stoving incasement portion is provided with the product conveyor who is used for carrying the product, product conveyor's transport end is provided with the hot-blast drive arrangement who is used for letting in hot-blast, product conveyor's transport initiating terminal's top is provided with an air outlet that is located stoving case, this stoving line is in the stoving process, the material is spread when spreading on the conveyer belt through the hopper and is not evenly spread for thickness and width of material heap are different, and steam flow is general fixed unchangeable, result in the material heap in the material difficult thoroughly stoving of part, when hopper blocks up simultaneously, the material heap is easy intermittent, and the drying-machine is in operating condition always, cause the heat extravagant.
Disclosure of Invention
In order to improve the situation, the control system of the steam valve group of the dryer based on photoelectric sensing signal monitoring provided by the invention monitors the size of a material pile to be dried and the temperature of an outlet material after drying, and accordingly, the opening and closing degree of the steam valve group is controlled by the valve controller, and the control system for double regulation of steam flow can ensure material drying and avoid heat waste.
The invention relates to a dryer steam valve group control system based on photoelectric sensing signal monitoring, which comprises a dryer, a steam valve group, a photoelectric sensing grating, a temperature sensor, a valve controller and a control background,
the method is characterized in that before the materials enter a dryer for drying, the existence of the materials is detected and the size of a material pile is measured through a photoelectric sensing grating, the opening and closing degree of a steam valve group is controlled through a valve controller, the steam flow is primarily regulated, the temperature of the materials at an outlet of a drying area is continuously monitored in the process that the materials enter the dryer for drying, the opening and closing degree of the steam valve group is increased or decreased accordingly, and the steam quantity is secondarily regulated and controlled;
the photoelectric sensing grating establishes signal interaction with a control background, the temperature sensor establishes signal interaction with the control background, the control background establishes signal interaction with a valve controller,
the dryer comprises at least two drying zones,
the photoelectric sensing gratings are arranged at two sides of the inlet of the dryer and are used for detecting whether materials exist on the conveyor belt and measuring the size of the materials,
preferably, the photoelectric sensing grating is positioned above the dryer,
the temperature sensor is arranged at the outlet of each drying area and is used for monitoring the temperature change of the materials at the outlet of the drying area,
the valve controller is arranged on the steam valve group and is used for controlling the opening and closing degree of the steam valve group,
the control background is internally provided with a signal conversion module and a data processing module which are used for carrying out data conversion and data comparison analysis on the electric signal and the temperature signal,
the invention also relates to a dryer steam valve group control method based on photoelectric sensing signal monitoring, which comprises the following steps:
1) Before the material is conveyed into the dryer by the conveyor belt, the detected electric signal is sent to a control background through a photoelectric sensing grating in a dryer steam valve group control system based on photoelectric sensing signal monitoring;
2) After the control background receives the electric signals, the data processing module in the control background is used for dynamically analyzing the electric signals;
3) When the electric signal continuously changes, the fact that the photoelectric sensing grating detects materials is indicated, a signal conversion module in a control background converts the electric signal into material pile size data, a data processing module calculates the volume of a material pile according to the material pile size data, the control background sends a valve adjusting instruction to a valve controller according to the volume of the material pile, and the valve controller adjusts the opening and closing degree of a steam valve group after receiving the valve adjusting instruction to adjust steam flow;
4) When the electric signal is kept unchanged, the fact that the photoelectric sensing grating does not detect materials is indicated, a control background sends a valve closing instruction to a valve controller, and the valve controller controls the steam valve group to be closed after receiving the valve closing signal;
5) In the process of drying after the materials enter each drying area, the temperature sensor collects data of the temperature of the materials at the outlet of the drying area in a set time interval, and the collected temperature data is sent to the control background;
6) The signal conversion module in the control background converts the received temperature data into a temperature value and sends the temperature value to the data processing module;
7) After the data processing module in the control background receives the temperature value, comparing and analyzing the temperature value with a set threshold value;
8) When the temperature value exceeds a set threshold, the steam is excessive, a control background generates a valve adjusting instruction and sends the valve adjusting instruction to a valve controller, and the valve controller reduces the opening and closing degree of the steam valve group after receiving the valve adjusting instruction; when the temperature value is lower than the set threshold, the steam is insufficient, the control background generates a valve adjusting instruction and sends the valve adjusting instruction to the valve controller, and the valve controller adjusts the opening and closing degree of the steam valve group to increase after receiving the valve adjusting instruction, so that the steam quantity is secondarily regulated and controlled.
Advantageous effects
1. The size of the material pile can be measured, and the opening and closing degree of the steam valve group can be adjusted accordingly, so that the drying of the materials is ensured.
2. The material on the conveyer belt can be detected, and when no material exists on the conveyer belt, the steam valve group is controlled to be closed, so that energy waste is avoided.
3. The steam quantity can be doubly regulated and controlled according to the material size and the outlet material temperature before and during the drying process, and the energy utilization efficiency is improved.
Drawings
FIG. 1 is a flow chart of a dryer steam valve set control method based on photoelectric sensing signal monitoring according to the invention;
Detailed Description
The invention discloses a dryer steam valve group control system based on photoelectric sensing signal monitoring, which is realized by comprising a dryer, a steam valve group, a photoelectric sensing grating, a temperature sensor, a valve controller and a control background,
it is characterized in that the photoelectric sensing grating and the control background establish signal interaction, the temperature sensor and the control background establish signal interaction, the control background and the valve controller establish signal interaction,
the dryer comprises at least two drying zones,
the photoelectric sensing gratings are arranged at two sides of the inlet of the dryer and are used for detecting whether materials exist on the conveyor belt and measuring the size of the materials,
the temperature sensor is arranged at the outlet of each drying area and is used for monitoring the temperature change of the materials at the outlet of the drying area,
the valve controller is arranged on the steam valve group and is used for controlling the opening and closing degree of the steam valve group,
the control background is internally provided with a signal conversion module and a data processing module which are used for carrying out data conversion and data comparison analysis on the temperature signal,
the invention also relates to a dryer steam valve group control method based on photoelectric sensing signal monitoring, which comprises the following steps:
1) Before the material is conveyed into the dryer by the conveyor belt, the detected electric signal is sent to a control background through a photoelectric sensing grating in a dryer steam valve group control system based on photoelectric sensing signal monitoring;
2) After the control background receives the electric signals, the data processing module in the control background is used for dynamically analyzing the electric signals;
preferably, the control background stores the electric signal after receiving the electric signal,
3) When the electric signal continuously changes, the fact that the photoelectric sensing grating detects materials is indicated, a signal conversion module in a control background converts the electric signal into material pile size data, a data processing module calculates the volume of a material pile according to the material pile size data, the control background sends a valve adjusting instruction to a valve controller according to the volume of the material pile, and the valve controller adjusts the opening and closing degree of a steam valve group after receiving the valve adjusting instruction to adjust steam flow;
preferably, the optical signal of the photoelectric sensing grating is shielded when the material is arranged on the conveyer belt, so that the electric signal is changed,
preferably, when the material is arranged on the conveying belt, the photoelectric signal is changed due to the fact that the distribution condition of the volume of the material on the conveying belt is continuously changed;
4) When the electric signal is kept unchanged, the fact that the photoelectric sensing grating does not detect materials is indicated, a control background sends a valve closing instruction to a valve controller, and the valve controller controls the steam valve group to be closed after receiving the valve closing signal;
preferably, when no material is present on the conveyor belt, the photoelectric sensing grating directly detects the size of the conveyor belt, and the size of the conveyor belt on the same conveyor is fixed, so that the electric signal is kept unchanged;
preferably, the time range of the electric signal which is kept unchanged is adjusted according to the specific type of the material and the size of the conveying belt;
5) In the process of drying after the materials enter each drying area, the temperature sensor collects data of the temperature of the materials at the outlet of the drying area in a set time interval, and the collected temperature data is sent to the control background;
preferably, the time interval for collecting the data of the temperature of the material at the outlet of the drying area by the temperature sensor is 5-45min, preferably 10min, 15min, 20min or 25min;
6) The signal conversion module in the control background converts the received temperature data into a temperature value and sends the temperature value to the data processing module;
7) After the data processing module in the control background receives the temperature value, comparing and analyzing the temperature value with a set threshold value;
preferably, the set threshold is adjusted according to the drying process requirements of the material specific type machine,
8) When the temperature value exceeds a set threshold, the steam is excessive, a control background generates a valve adjusting instruction and sends the valve adjusting instruction to a valve controller, and the valve controller reduces the opening and closing degree of the steam valve group after receiving the valve adjusting instruction; when the temperature value is lower than the set threshold value, the steam is insufficient, a control background generates a valve adjusting instruction and sends the valve adjusting instruction to a valve controller, and the valve controller increases the opening and closing degree of the steam valve group after receiving the valve adjusting instruction and secondarily adjusts and controls the steam quantity;
preferably, the opening and closing degree of the steam valve group is adjusted and optimized in real time according to the temperature change of the outlet of the drying area;
the purpose of detecting whether materials exist or not and measuring the size of a material pile through the photoelectric sensing grating, controlling the opening and closing degree of the steam valve group through the valve controller, adjusting the steam flow, guaranteeing material drying and avoiding heat waste is achieved.
The foregoing embodiments are preferred embodiments of the present invention, and applicant does not add other embodiments for the sake of economy, but is not intended to limit the scope of the present invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
Claims (10)
1. A dryer steam valve group control method based on photoelectric sensing signal monitoring is characterized in that: the method comprises the following steps:
1) Before the material is conveyed into the dryer by the conveyor belt, the detected electric signal is sent to a control background through a photoelectric sensing grating in a dryer steam valve group control system based on photoelectric sensing signal monitoring;
2) After the control background receives the electric signals, the data processing module in the control background is used for dynamically analyzing the electric signals;
3) When the electric signal continuously changes, the fact that the photoelectric sensing grating detects materials is indicated, a signal conversion module in a control background converts the electric signal into material pile size data, a data processing module calculates the volume of a material pile according to the material pile size data, the control background sends a valve adjusting instruction to a valve controller according to the volume of the material pile, and the valve controller adjusts the opening and closing degree of a steam valve group after receiving the valve adjusting instruction to adjust steam flow;
4) When the electric signal is kept unchanged, the fact that the photoelectric sensing grating does not detect materials is indicated, a control background sends a valve closing instruction to a valve controller, and the valve controller controls the steam valve group to be closed after receiving the valve closing signal;
5) In the process of drying after the materials enter each drying area, the temperature sensor collects data of the temperature of the materials at the outlet of the drying area in a set time interval, and the collected temperature data is sent to the control background;
6) The signal conversion module in the control background converts the received temperature data into a temperature value and sends the temperature value to the data processing module;
7) After the data processing module in the control background receives the temperature value, comparing and analyzing the temperature value with a set threshold value;
8) When the temperature value exceeds a set threshold, the steam is excessive, a control background generates a valve adjusting instruction and sends the valve adjusting instruction to a valve controller, and the valve controller reduces the opening and closing degree of the steam valve group after receiving the valve adjusting instruction; when the temperature value is lower than the set threshold value, the steam is insufficient, the control background generates a valve adjusting instruction and sends the valve adjusting instruction to the valve controller, and the valve controller increases the opening and closing degree of the steam valve group after receiving the valve adjusting instruction.
2. The control method of the dryer steam valve group based on photoelectric sensing signal monitoring according to claim 1, characterized in that the control system of the dryer steam valve group based on photoelectric sensing signal monitoring comprises a dryer, a steam valve group, a photoelectric sensing grating, a temperature sensor, a valve controller and a control background, before materials enter the dryer for drying, whether materials exist or not and the size of a material pile are detected through the photoelectric sensing grating, the opening and closing degree of the steam valve group is controlled through the valve controller according to the materials, the steam flow is initially regulated, the material temperature at the outlet of a drying area is continuously monitored in the process of drying the materials entering the dryer, the opening and closing degree of the steam valve group is regulated and controlled secondarily according to the materials, the photoelectric sensing grating and the control background establish signal interaction, the temperature sensor and the control background establish signal interaction, the control background and the valve controller establish signal interaction, the photoelectric sensing grating is arranged at two sides of the inlet of the dryer for detecting whether materials exist on a conveying belt and measuring the size of the materials, the temperature sensor is arranged at the outlet of each drying area, the temperature sensor is used for monitoring the opening and closing degree of the steam valve group, the temperature sensor is arranged at the outlet of each drying area for the drying area, the temperature sensor is used for monitoring the temperature change of the steam valve group is used for data conversion module and the data conversion module is arranged in the steam valve group, and the control module is used for data conversion and is used for analyzing the data conversion module.
3. The control method of a dryer steam valve set based on photoelectric sensing signal monitoring as claimed in claim 2, wherein the photoelectric sensing grating is located above the dryer.
4. The method for controlling a valve set of a dryer based on photo-electric sensing signal monitoring as claimed in claim 2, wherein said dryer comprises at least two drying zones.
5. The control method of a dryer steam valve set based on photoelectric sensing signal monitoring as claimed in claim 1, wherein the control background stores the electric signal after receiving the electric signal.
6. The control method of a dryer steam valve group based on photoelectric sensing signal monitoring as claimed in claim 1, wherein the photoelectric sensing grating is characterized in that the optical signal is shielded when the material is on the conveyor belt, thereby causing the change of the electric signal.
7. The control method of a dryer steam valve set based on photoelectric sensing signal monitoring of claim 1, wherein the time range in which the electric signal is kept unchanged is adjusted according to the specific type of material and the size of the conveyor belt.
8. The control method of the dryer steam valve group based on photoelectric sensing signal monitoring according to claim 1, wherein the time interval for data collection of the material temperature at the outlet of the drying area by the temperature sensor is 5-45min.
9. The control method of a dryer steam valve group based on photoelectric sensing signal monitoring according to claim 1, wherein the set threshold is adjusted according to the drying process requirements of a material specific type machine.
10. The control method of the dryer steam valve group based on photoelectric sensing signal monitoring according to claim 1, wherein the opening and closing degree of the steam valve group is adjusted and optimized in real time according to the outlet temperature change of a drying area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311046722.6A CN116817581A (en) | 2023-08-19 | 2023-08-19 | Dryer steam valve group control system based on photoelectric sensing signal monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311046722.6A CN116817581A (en) | 2023-08-19 | 2023-08-19 | Dryer steam valve group control system based on photoelectric sensing signal monitoring |
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| Publication Number | Publication Date |
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| CN116817581A true CN116817581A (en) | 2023-09-29 |
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| CN202311046722.6A Pending CN116817581A (en) | 2023-08-19 | 2023-08-19 | Dryer steam valve group control system based on photoelectric sensing signal monitoring |
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| CN (1) | CN116817581A (en) |
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- 2023-08-19 CN CN202311046722.6A patent/CN116817581A/en active Pending
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