CN202582119U - Automatic constant temperature control device for horizontal pellet feed drier - Google Patents
Automatic constant temperature control device for horizontal pellet feed drier Download PDFInfo
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- CN202582119U CN202582119U CN 201220092554 CN201220092554U CN202582119U CN 202582119 U CN202582119 U CN 202582119U CN 201220092554 CN201220092554 CN 201220092554 CN 201220092554 U CN201220092554 U CN 201220092554U CN 202582119 U CN202582119 U CN 202582119U
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Abstract
The utility model relates to an automatic constant temperature control device for a horizontal pellet feed drier. The automatic constant temperature control device comprises wind speed control and steam control, wherein the wind speed control is realized by a fan frequency converter; and the steam control is realized by a steam proportional valve. In the automatic constant temperature control device, a programmable logic controller (PLC) is adopted for controlling, a temperature sensor arranged on an air inlet duct is connected with the PLC, and the output of the PLC is connected with the fan frequency converter used for controlling the wind speed and the steam proportional valve used for adjusting the quantity of steam. The PLC is connected with a touch screen. The automatic constant temperature control device can simplify the temperature control process flow within the largest range under the condition of guaranteeing material to be rapidly dried, and manual operation is not needed in the whole process flow, so that the data error and delay can be reduced, the energy consumption is reduced, the management accuracy and the convenience in operation are improved, and the temperature control automation of the horizontal drier can be realized.
Description
Technical field
The utility model relates to a kind of pellet horizontal drier automatic thermostatic controller, belongs to the automatic control technology field, particularly uses Closed loop Control to control the device of horizontal drying box operating ambient temperature.
Background technology
At present, the operation principle of domestic horizontal drier all is that the temperature of air is controlled through the amount of heat exchanger by control steam with the air of steam through heat exchanger heats entering hothouse.The temperature and the wind speed that get into the air of hothouse through control are controlled the operating ambient temperature realization material water content control in the drying machine; And the actual index of material all is to produce the back that finishes to extract through manual work at the finished product end; Obtain after Equipment Inspection to article control chamber then; Change the control temperature environment, thereby make the moisture content of material reach expectation index through the whole vapor (steam) temperature of contrast messenger wage adjustment, blower fan frequency parameter at last.Owing to be manually-operated, such inspection process is very loaded down with trivial details and complicated, and precision is low, and production can not form closed loop, and efficient is lower.Therefore, the device that needs operating temperature in a kind of automatic control horizontal drier.
Summary of the invention
The purpose of the utility model is to provide a kind of pellet horizontal drier automatic thermostatic controller.Be specially and use Closed loop Control automatic steam regulation flow proportioning valve and fan operation frequency to make the operating ambient temperature of horizontal drier reach the re-set target value.
The technical scheme of the utility model: the pellet horizontal drier automatic thermostatic controller of the utility model comprises wind speed control and steam control; Wind speed control is realized by fan frequency converter; Steam control is realized by the steam proportioning valve; The utility model adopts the control of PLC controller, and the temperature sensor that is installed on the wind inlet channel is connected with the PLC controller, and the output of PLC controller is connected with the steam proportioning valve of the fan frequency converter of controlled wind speed and steam regulation amount.Described PLC controller is connected with touch-screen.
The beneficial effect of the utility model is: the automatic thermostatic controller of the utility model can be under the prerequisite that ensures material flash baking; The simplification temperature control flow of maximum magnitude; Whole flow process does not have manually-operated; Not only reduce data error and delay, also reduced the convenience of energy consumption, management precision and operation, realize horizontal drier temperature control automation.
Description of drawings
Fig. 1 is the hardware system structure chart of the utility model.
Fig. 2 is the software control flow chart of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and practical implementation this device is done further to describe in detail:
Fig. 1 is the hardware system structure chart of the utility model: the pellet horizontal drier automatic thermostatic controller of the utility model comprises wind speed control and steam control; Wind speed control is realized by fan frequency converter; Steam control is realized by the steam proportioning valve; The utility model adopts the control of PLC controller, and the temperature sensor that is installed on the wind inlet channel is connected with the PLC controller, and the output of PLC controller is connected with the steam proportioning valve of the fan frequency converter of controlled wind speed and steam regulation amount.Described PLC controller is connected with touch-screen.
The Hardware Design of the utility model has adopted modular form, and general structure has adopted distributed control structure.Host computer adopts graphic control panel, the monitoring of each temperature control point temperature of the whole drying machine of touch-screen main processing, and blower fan, frequency converter and steam proportioning valve parameter are provided with, collection of various device working condition and warning message or the like.Slave computer comprises PLC controller, temperature sensor, frequency converter, steam proportioning valve etc.; The PLC controller is mainly gathered the signal that transmits on each temperature acquisition point sensor in the horizontal drier; Convert it into actual temperature, then according to the difference between actual temperature and the design temperature, PID regulates the aperture of fan frequency converter frequency and steam proportioning valve; Strengthen or the intake of minimizing blower fan and the size of steam regulation amount; Regulate the hot blast temperature and the flow of drying machine, thereby make the operating temperature in the drying box consistent, thereby reach closed-loop control with design temperature.
Fig. 2 is the software control flow chart of the utility model:
Closed-loop control system software also is divided into two-layer up and down, and upper layer software (applications) comprises that monitoring module, parameter are provided with module, alarm module, are carried out by touch-screen; Lower floor's software comprises temperature collect module, PID adjust module, frequency transformer control module and steam Proportional Valve-controlled control module.Monitoring module is mainly monitored the current state of horizontal drier; Parameter is provided with the setting that module mainly is responsible for various parameters in the system; The various alarm signals of alarm module acquisition system also store; Temperature collect module mainly is that the temperature signal (curtage) that temperature sensor is gathered is changed into data signal through A/D, changes into temperature value according to algorithm then, inputs to the PID module of adjusting; PID adjusts module according to the temperature of collection in worksite and the temperature value proportionate relationship calculating output analog quantity temperature control signals and the analog quantity steam control signal of upper layer software (applications) setting; Output Frequency Converter Control system mainly is the frequency Hz value that the analog quantity temperature control signals changed into frequency converter work after PID was adjusted, and drives blower fan work then; Analog quantity steam control signal after steam proportional valve control system adjusts according to PID is controlled the aperture size of steam proportioning valve, thus the control steam flow.
During work; At first on-the-spot various signals as shown in Figure 2 are passed to monitoring module, alarm module and the PID module of adjusting after through the A/D conversion; The PID parameter that signal that module comes according to scene conversion and parameter be provided with the module setting of adjusting begins to adjust; Adjust finish after, pass to on-the-spot Frequency Converter Control system and steam control system again after control signal D/A transformed, control thereby the control frequency converter carries out temperature closed loop with steam.
Claims (2)
1. pellet horizontal drier automatic thermostatic controller; Comprise wind speed control and steam control; Wind speed control is realized that by fan frequency converter steam control is realized by the steam proportioning valve, it is characterized in that: adopt the control of PLC controller; The temperature sensor that is installed on the wind inlet channel is connected with the PLC controller, and the output of PLC controller is connected with the steam proportioning valve of the fan frequency converter of controlled wind speed and steam regulation amount.
2. pellet horizontal drier automatic thermostatic controller according to claim 1, it is characterized in that: the PLC controller is connected with touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220092554 CN202582119U (en) | 2012-03-13 | 2012-03-13 | Automatic constant temperature control device for horizontal pellet feed drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220092554 CN202582119U (en) | 2012-03-13 | 2012-03-13 | Automatic constant temperature control device for horizontal pellet feed drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202582119U true CN202582119U (en) | 2012-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220092554 Expired - Lifetime CN202582119U (en) | 2012-03-13 | 2012-03-13 | Automatic constant temperature control device for horizontal pellet feed drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202582119U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345738A (en) * | 2017-07-27 | 2017-11-14 | 东莞信易电热机械有限公司 | One kind is without the intelligent drying machine of heat dehumidifying |
| CN110981151A (en) * | 2019-11-18 | 2020-04-10 | 江苏天舒电器有限公司 | Negative pressure type heat pump closed sludge drying control system and control method |
-
2012
- 2012-03-13 CN CN 201220092554 patent/CN202582119U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345738A (en) * | 2017-07-27 | 2017-11-14 | 东莞信易电热机械有限公司 | One kind is without the intelligent drying machine of heat dehumidifying |
| CN110981151A (en) * | 2019-11-18 | 2020-04-10 | 江苏天舒电器有限公司 | Negative pressure type heat pump closed sludge drying control system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |