Drying temperature control system for production of yam non-dairy creamer
Technical Field
The utility model relates to a plant fat end production technical field especially relates to a chinese yam plant fat end production stoving temperature control system.
Background
In the production process of the yam non-dairy creamer, the solution, the emulsion, the suspension or the slurry is sprayed into fine droplets in hot air, and in the process of floating, water is evaporated to form a powdery or granular product. Introducing hot air into the top of the drying tower, pumping the material liquid to the top of the tower by a high-pressure pump, spraying the material liquid into atomized liquid drops by an atomizer, quickly evaporating the water after the liquid drops contact with the high-temperature hot air, forming a dried product in a very short time, and discharging the dried product from the bottom of the drying tower. Need carry out real time monitoring to the inside temperature of drying tower in drying process, however current temperature-detecting device receives external disturbance very easily, and temperature sensor signal produces the drift in monitoring process to influence the accuracy nature of temperature control, influence the product effect of drying then.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
To the above situation, in order to overcome the defects of the prior art, the utility model aims to provide a drying temperature control system for yam non-dairy creamer production.
The technical scheme for solving the problem is as follows: the utility model provides a fat end production stoving temperature control system is planted to chinese yam, includes drying tower and air heater, and the inside temperature-detecting device that is provided with of drying tower, temperature-detecting device includes infrared temperature sensor, infrared temperature sensor sends into the controller after differential amplifier circuit and double-circuit regulating circuit handle in proper order, the controller is used for adjusting the operating condition of air heater.
Further, the differential amplifier circuit includes operational amplifiers AR1 and AR2, a non-inverting input terminal of the operational amplifier AR1 is connected to the signal output terminal of the infrared temperature sensor and one end of a resistor R1 through a capacitor C1, the other end of the resistor R1 is grounded, an inverting input terminal of the operational amplifier AR1 is connected to one ends of the resistors R2 and R3, the other end of the resistor R3 is grounded, the other end of the resistor R2 is connected to an inverting input terminal of the operational amplifier AR2, the non-inverting input terminal of the operational amplifier AR2 is grounded, and an output terminal of the operational amplifier AR2 is connected to the inverting input terminal of the operational amplifier AR2 through a capacitor C2.
Further, the two-way regulating circuit comprises a triode VT1 and a MOS transistor Q1, one end of a collector garbage bag female main R7, a capacitor C3 and an inductor L1 of the triode VT1 is grounded, the other end of the capacitor C3 is grounded, the other end of the inductor L1 is connected to the output end of the operational amplifier AR1 and one end of a resistor R4, the other end of the resistor R4 is grounded, the base of the triode VT1 is connected to the other end of the resistor R7 and the drain of the MOS transistor Q1, the gate of the MOS transistor Q1 is connected to the output end of the operational amplifier AR2 through a resistor R5 and is grounded through a resistor R6, the source of the MOS transistor Q1 is grounded, the emitter of the triode VT1 is connected to one end of the capacitor C4 and the controller through a resistor R8, and the other end of the capacitor C4 is grounded.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses an infrared temperature sensor carries out real-time supervision to the inside material production temperature of drying tower, has that the directness is strong, corresponding fast characteristics, and differential amplifier circuit has eliminated the common mode interference that exists among the infrared temperature detected signal well, has greatly guaranteed the detected signal precision.
2. The MOS tube Q1 in the double-circuit regulating circuit is used as a regulating tube of the triode VT1, and the MOS tube Q1 keeps a good working steady state, so that the stability of the output signal of the triode VT1 can be effectively ensured.
3. The controller analyzes and calculates the infrared temperature detection signal waveform to obtain the real-time temperature in the drying tower, and compares the infrared temperature detection signal waveform with the system set drying temperature value to adjust the working state of the air heater, so that the drying temperature is moderate and consistent with the system set temperature value, the accuracy of temperature control is effectively guaranteed, and the drying effect of the product is improved.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying fig. 1. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The utility model provides a fat end production stoving temperature control system is planted to chinese yam, includes drying tower and air heater, and the inside temperature-detecting device that is provided with of drying tower, temperature-detecting device include infrared temperature sensor, infrared temperature sensor sends into the controller after differential amplifier circuit and double-circuit regulating circuit handle in proper order, the controller is used for adjusting the operating condition of air heater.
The differential amplifying circuit comprises operational amplifiers AR1 and AR2, wherein the non-inverting input end of the operational amplifier AR1 is connected with the signal output end of the infrared temperature sensor and one end of a resistor R1 through a capacitor C1, the other end of the resistor R1 is grounded, the inverting input end of the operational amplifier AR1 is connected with one ends of the resistors R2 and R3, the other end of the resistor R3 is grounded, the other end of the resistor R2 is connected with the inverting input end of the operational amplifier AR2, the non-inverting input end of the operational amplifier AR2 is grounded, and the output end of the operational amplifier AR2 is connected with the inverting input end of the operational amplifier AR2 through a capacitor C2.
The double-path regulating circuit comprises a triode VT1 and an MOS transistor Q1, a collector garbage bag female main R7 of the triode VT1, one end of a capacitor C3 and one end of an inductor L1, the other end of the capacitor C3 is grounded, the other end of the inductor L1 is connected with the output end of an operational amplifier AR1 and one end of a resistor R4, the other end of the resistor R4 is grounded, the base of the triode VT1 is connected with the other end of the resistor R7 and the drain of the MOS transistor Q1, the grid of the MOS transistor Q1 is connected with the output end of the operational amplifier AR2 through the resistor R5 and is grounded through the resistor R6, the source of the MOS transistor Q1 is grounded, the emitter of the triode VT1 is connected with one end of the capacitor C4 and the controller through the resistor R8, and the other end of the capacitor C4 is grounded.
The utility model discloses when specifically using, infrared temperature sensor carries out real-time supervision to the inside material production temperature of drying tower, has that the directness is strong, corresponding fast characteristics. The high-pass filter formed by the resistor R1 and the capacitor C1 in the differential amplifying circuit directly processes the detection signal of the infrared temperature sensor at intervals, and then the detection signal is sent to a differential amplifier formed by the operational amplifiers AR1 and AR2 for amplification, so that common-mode interference existing in the infrared temperature detection signal is well eliminated, and the detection signal precision is greatly guaranteed. The operational amplifiers AR1 and AR2 are divided into two paths and sent to a two-path regulating circuit for regulation, LC filtering is formed by the inductor L1 and the capacitor C3 to accurately filter the output signal of the operational amplifier AR1, then the filtered signal is sent to the triode VT1 for amplification, and the MOS tube Q1 serves as a regulating tube of the triode VT 1. Because the capacitor C2 has a good stabilizing effect on the output signal of the operational amplifier AR2, the MOS transistor Q1 has a good working steady state, so that the stability of the output signal of the triode VT1 can be effectively ensured, and finally the output signal is subjected to RC filtering and noise reduction and then is sent into a controller. The controller analyzes and calculates the infrared temperature detection signal waveform to obtain the real-time temperature in the drying tower, and compares the infrared temperature detection signal waveform with the system set drying temperature value to adjust the working state of the air heater, so that the drying temperature is moderate and consistent with the system set temperature value, the accuracy of temperature control is effectively guaranteed, and the drying effect of the product is improved.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.