CN214582392U - Temperature control device of drying and screening machine - Google Patents
Temperature control device of drying and screening machine Download PDFInfo
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- CN214582392U CN214582392U CN202120726247.7U CN202120726247U CN214582392U CN 214582392 U CN214582392 U CN 214582392U CN 202120726247 U CN202120726247 U CN 202120726247U CN 214582392 U CN214582392 U CN 214582392U
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Abstract
The utility model discloses a dry sieve separator temperature control device, including the drying cabinet, be equipped with temperature sensor in the drying cabinet, still include temperature acquisition signal processing unit and the control unit, temperature acquisition signal processing unit includes that notch feedback circuit and compensation stabilizing circuit are put to fortune, and notch feedback circuit is put to fortune effectively eliminates external high frequency clutter and disturbs, has greatly reduced systematic error, promotes temperature signal processing precision. Design compensation stabilizing circuit adjusts the output signal of fortune trapped wave feedback circuit, arouses signal oscillation to RLC trapper in the course of the work to have fine compensating action, guarantees that the output of detected signal is stable, and the controller is used for adjusting the operating condition of heater after carrying out the analysis and judgement to the temperature detection digital quantity value to make the inside temperature of drying cabinet be in the system setting temperature range all the time, greatly promoted seed drying effect.
Description
Technical Field
The utility model relates to a dry technical field of seed especially relates to a dry sieve separator temperature control device.
Background
Generally, the moisture of newly harvested seeds reaches 25% -45%, the seeds are not suitable for storage at the moment, however, the seeds are dried by sun or natural drying in the sun firstly in the traditional method, the work is finished by manpower, the operation is carried out by an operator by self holding the drying treatment time, screening and grading are finished by self, and the operation procedure is complicated. In recent years, with the increase of the demand of people for improving production efficiency and the progress of industrial automation degree, the automatic seed drying screening machine is gradually widely applied, but the temperature control effect in the drying oven is poor in the automatic treatment process, and the drying quality of seeds is adversely affected.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a temperature control device for a drying and screening machine.
The technical scheme for solving the problem is as follows: the utility model provides a temperature control device of drying and screening machine, includes the drying cabinet, is equipped with temperature sensor in the drying cabinet, still includes temperature acquisition signal processing unit and the control unit, temperature acquisition signal processing unit includes that trap feedback circuit and compensation stabilizing circuit are put to fortune, the input of trap feedback circuit is put to fortune is connected temperature sensor, the output of trap feedback circuit is put to fortune is connected the input of compensation stabilizing unit, the output of compensation stabilizing circuit is connected the control unit.
Further, the operational amplifier notch feedback circuit comprises an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected with one end of a resistor R1 and a capacitor C1 through a resistor R2 and a signal output terminal of the temperature sensor, the other ends of the resistor R1 and the capacitor C1 are connected to the ground in parallel, an inverting input terminal and an output terminal of the operational amplifier AR1 are connected with one end of a resistor R4 and an end of an inductor L1, the other end of the inductor L1 is connected with one end of a capacitor C3, the other ends of the resistor R4 and the capacitor C3 are connected with a non-inverting input terminal of the operational amplifier AR2, an inverting input terminal of the operational amplifier AR2 is connected with one end of a capacitor C2, and an output terminal of the operational amplifier AR2 is connected with the other end of a capacitor C2 and is connected with an inverting input terminal of the operational amplifier AR1 through a resistor R3.
Further, the compensation stabilizing circuit comprises an operational amplifier AR3, a non-inverting input terminal of the operational amplifier AR3 is connected to an output terminal of the operational amplifier AR1, an inverting input terminal of the operational amplifier AR3 is connected to an output terminal of the operational amplifier AR3 through a resistor R5 and a capacitor C4 which are connected in parallel, an output terminal of the operational amplifier AR3 is connected to a cathode of the zener diode DZ1 and connected to the control unit through an a/D converter, and an anode of the zener diode DZ1 is grounded.
Furthermore, the control unit comprises a controller and a heater, wherein the input end of the controller is connected with the A/D converter, and the output end of the controller is connected with the control end of the heater.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a temperature sensor carries out real-time supervision to the inside temperature of drying cabinet, and its detected signal is sent into at first and is put in the trapped wave feedback circuit and adjust, eliminates external high frequency clutter and disturb, has greatly reduced systematic error, promotes temperature signal processing precision.
2. Design compensation stabilizing circuit adjusts the output signal of fortune trapped wave feedback circuit, arouses signal oscillation to RLC trapper in the course of the work to have fine compensating action, guarantees that the output of detected signal is stable, and the controller is used for adjusting the operating condition of heater after carrying out the analysis and judgement to the temperature detection digital quantity value to make the inside temperature of drying cabinet be in the system setting temperature range all the time, greatly promoted seed drying effect.
Drawings
Fig. 1 is a schematic circuit diagram of the temperature acquisition signal processing unit of the present invention.
Detailed Description
The foregoing and other features, aspects and utilities of the present invention will be apparent from the following more particular description of the embodiments of the invention, as illustrated in the accompanying drawings and described in the accompanying drawings of which 1 is a part hereof. 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 temperature control device of drying and screening machine, includes the drying cabinet, is equipped with temperature sensor in the drying cabinet, still includes temperature acquisition signal processing unit and the control unit, temperature acquisition signal processing unit includes that trap feedback circuit and compensation stabilizing circuit are put to fortune, the input of trap feedback circuit is put to fortune is connected temperature sensor, the output of trap feedback circuit is put to fortune is connected the input of compensation stabilizing unit, the output of compensation stabilizing circuit is connected the control unit.
As shown in fig. 1, the operational amplifier notch feedback circuit includes an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected to one end of a resistor R1 and a capacitor C1 through a resistor R2 and a signal output terminal of the temperature sensor, the other ends of the resistor R1 and the capacitor C1 are connected to ground in parallel, an inverting input terminal and an output terminal of the operational amplifier AR1 are connected to one ends of a resistor R4 and an inductor L1, the other end of the inductor L1 is connected to one end of a capacitor C3, the other ends of the resistor R4 and the capacitor C3 are connected to a non-inverting input terminal of the operational amplifier AR2, an inverting input terminal of the operational amplifier AR2 is connected to one end of a capacitor C2, and an output terminal of the operational amplifier AR2 is connected to the other end of a capacitor C2 and is connected to an inverting input terminal of an operational amplifier AR1 through a resistor R3.
The compensation stabilizing circuit comprises an operational amplifier AR3, wherein the non-inverting input end of the operational amplifier AR3 is connected with the output end of the operational amplifier AR1, the inverting input end of the operational amplifier AR3 is connected with the output end of the operational amplifier AR3 through a resistor R5 and a capacitor C4 which are connected in parallel, the output end of the operational amplifier AR3 is connected with the cathode of a voltage stabilizing diode DZ1 and is connected with the control unit through an A/D converter, and the anode of a voltage stabilizing diode DZ1 is grounded.
The utility model discloses when specifically using, adopt temperature sensor to carry out real-time supervision to the inside temperature of drying cabinet, its detected signal is sent into at first that the fortune is put and is adjusted in the trapped wave feedback circuit. The resistor R1 and the capacitor C1 form an RC filter to perform low-pass noise reduction on the temperature detection signal, eliminate external high-frequency clutter interference, and then send the temperature detection signal into the operational amplifier AR1 to perform in-phase amplification. In order to ensure the amplification accuracy of the temperature detection signal, after the output signal of the operational amplifier AR1 is processed by the RLC trap formed by the resistor R4, the inductor L1 and the capacitor C3, the unwanted noise signal in the detection signal is eliminated first, and then the output signal is fed back to the operational amplifier AR1 through the operational amplifier AR2, so that closed-loop feedback adjustment is formed, the system error is greatly reduced, and the temperature signal processing accuracy is improved.
Because the RLC wave trap can cause signal oscillation in the working process, the compensation stabilizing circuit is designed to adjust the output signal of the operational amplifier trap feedback circuit. The operational amplifier AR3 is used for amplifying the output signal of the operational amplifier notch feedback circuit, the resistor R5 and the capacitor C4 form RC compensation adjustment at the negative feedback end of the operational amplifier AR3, the RC compensation adjustment has good stabilization effect on the output of the detection signal, the zener diode DZ1 also performs amplitude stabilization on the output signal of the operational amplifier AR3, and finally the output signal is converted into digital quantity through the A/D converter and then is sent into the control unit. The control unit comprises a controller and a heater, wherein the input end of the controller is connected with the A/D converter, and the output end of the controller is connected with the control end of the heater. The controller is used for adjusting the operating condition of the heater after analyzing and judging the temperature detection digital value, so that the internal temperature of the drying oven is always in the set temperature range of the system, and the drying effect of the seeds is greatly 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.
Claims (4)
1. The utility model provides a temperature control device of drying and screening machine, includes the drying cabinet, is equipped with temperature sensor in the drying cabinet, its characterized in that: still include temperature acquisition signal processing unit and the control unit, temperature acquisition signal processing unit includes that the trapped wave feedback circuit is put to fortune and compensation stabilizing circuit, the input of trapped wave feedback circuit is put to fortune is connected temperature sensor, the output of fortune is put trapped wave feedback circuit is connected compensation stabilizing circuit's input, compensation stabilizing circuit's output is connected the control unit.
2. The temperature control device of the drying and screening machine according to claim 1, wherein: the operational amplifier notch feedback circuit comprises an operational amplifier AR1, wherein the non-inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and a capacitor C1 and the signal output end of the temperature sensor through a resistor R2, the other ends of the resistor R1 and the capacitor C1 are grounded in parallel, the inverting input end and the output end of the operational amplifier AR1 are connected with one ends of a resistor R4 and an inductor L1, the other end of the inductor L1 is connected with one end of a capacitor C3, the other ends of the resistor R4 and the capacitor C3 are connected with the non-inverting input end of the operational amplifier AR2, the inverting input end of the operational amplifier AR2 is connected with one end of a capacitor C2, and the output end of the operational amplifier AR2 is connected with the other end of a capacitor C2 and is connected with the inverting input end of the operational amplifier AR1 through a resistor R3.
3. The temperature control device of the drying and screening machine according to claim 2, wherein: the compensation stabilizing circuit comprises an operational amplifier AR3, wherein the non-inverting input end of the operational amplifier AR3 is connected with the output end of the operational amplifier AR1, the inverting input end of the operational amplifier AR3 is connected with the output end of the operational amplifier AR3 through a resistor R5 and a capacitor C4 which are connected in parallel, the output end of the operational amplifier AR3 is connected with the cathode of a voltage stabilizing diode DZ1 and is connected with the control unit through an A/D converter, and the anode of a voltage stabilizing diode DZ1 is grounded.
4. The temperature control device of the drying and screening machine according to claim 3, wherein: the control unit comprises a controller and a heater, wherein the input end of the controller is connected with the A/D converter, and the output end of the controller is connected with the control end of the heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120726247.7U CN214582392U (en) | 2021-04-10 | 2021-04-10 | Temperature control device of drying and screening machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120726247.7U CN214582392U (en) | 2021-04-10 | 2021-04-10 | Temperature control device of drying and screening machine |
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| CN214582392U true CN214582392U (en) | 2021-11-02 |
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| CN202120726247.7U Active CN214582392U (en) | 2021-04-10 | 2021-04-10 | Temperature control device of drying and screening machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801465A (en) * | 2022-01-08 | 2022-07-29 | 河南宝钢制罐有限公司 | Printing quality control system for pop-top can |
| CN114859995A (en) * | 2022-04-21 | 2022-08-05 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melt guniting granulation production |
| CN115445883A (en) * | 2022-08-25 | 2022-12-09 | 河南天冠铝业有限公司 | Aluminum profile surface spraying and drying control system |
| CN114859995B (en) * | 2022-04-21 | 2024-06-04 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melting, slurry spraying and granulating production |
-
2021
- 2021-04-10 CN CN202120726247.7U patent/CN214582392U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801465A (en) * | 2022-01-08 | 2022-07-29 | 河南宝钢制罐有限公司 | Printing quality control system for pop-top can |
| CN114859995A (en) * | 2022-04-21 | 2022-08-05 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melt guniting granulation production |
| CN114859995B (en) * | 2022-04-21 | 2024-06-04 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melting, slurry spraying and granulating production |
| CN115445883A (en) * | 2022-08-25 | 2022-12-09 | 河南天冠铝业有限公司 | Aluminum profile surface spraying and drying control system |
| CN115445883B (en) * | 2022-08-25 | 2023-08-01 | 河南天冠铝业有限公司 | Aluminum profile surface spraying and drying control system |
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