CN213876452U - Fertilizer reation kettle temperature control device - Google Patents
Fertilizer reation kettle temperature control device Download PDFInfo
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- CN213876452U CN213876452U CN202023270883.8U CN202023270883U CN213876452U CN 213876452 U CN213876452 U CN 213876452U CN 202023270883 U CN202023270883 U CN 202023270883U CN 213876452 U CN213876452 U CN 213876452U
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Abstract
The utility model discloses a fertilizer reation kettle temperature control device, including the cauldron body, temperature control unit and heating element, the temperature control unit is including setting up the temperature probe J1 in the internal portion of cauldron, temperature probe J1's detected signal carries out analog-to-digital conversion after sending into difference amplifier circuit and filtering stabilization circuit in proper order and handling, and difference amplifier circuit utilizes the difference amplifier principle to carry out difference amplification to two way detected signal, effectively suppresses common mode interference, has greatly promoted the amplification precision of detected signal; the filter stabilizing circuit utilizes LC filtering to carry out low pass processing to differential amplification circuit's output signal, effectively suppresses the interference of external high frequency clutter to temperature detection, promotes the detected signal precision, and the controller controls heating unit work after carrying out the comparison according to received temperature detection value and system set value, keeps the internal temperature of cauldron invariable, effectively guarantees fertilizer homogeneous mixing, and fermentation effect is good.
Description
Technical Field
The utility model relates to a reation kettle temperature control technical field especially relates to a fertilizer reation kettle temperature control device.
Background
The organic fertilizer is a fertilizer containing organic substances, which can provide various inorganic nutrients and organic nutrients for crops and can also fertilize and improve soil. The existing organic fertilizer rapid reaction kettle carries out unique rolling motion by adding straws, animal wastes, fermentation strains and water into the kettle body, so that not only is the uniform mixing of all components of materials realized, but also the balance of temperature and the average distribution of moisture are realized, and the conditions of gradient, temperature, moisture and the like of full, complete and thorough fermentation of the fertilizer are met under the condition of full oxygen supply. If the solid materials in the kettle body are more, the phenomenon that the mixing is not uniform and the fermentation temperature is too high can occur, so that the temperature in the kettle body needs to be monitored in real time to obtain mixing effect information.
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 fertilizer reation kettle temperature control device.
The technical scheme for solving the problem is as follows: a temperature control device of an organic fertilizer reaction kettle comprises a kettle body, a temperature control unit and a heating unit, wherein the temperature control unit comprises a temperature probe J1 arranged in the kettle body, and detection signals of the temperature probe J1 are sequentially sent to a differential amplification circuit and a filtering and stabilizing circuit for processing, then are subjected to analog-to-digital conversion, and finally are sent to a controller; the differential amplification circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with a pin 3 of a rheostat RP1 through a resistor R3 and is connected with the collector of a triode VT1 through a capacitor C1, a pin 1 of a rheostat RP1 and the other end of a capacitor C1 are connected with one end of the resistor R1 and a pin 1 of a temperature probe J1, the non-inverting input end of the operational amplifier AR1 is grounded through a resistor R4 and a capacitor C2 which are connected in parallel, the other end of the resistor R1, the cathode of a zener diode DZ1 and a pin 2 of the temperature probe J1 are connected through a resistor R2, the anode of the zener diode DZ1 and a pin 2 of the rheostat RP1 are grounded in parallel, and the output end of the operational amplifier AR1 is connected with the base of the triode VT1 and is grounded through a capacitor C3.
Preferably, the filter stabilizing circuit comprises an inductor L1, one end of the inductor L1 is connected to an emitter of a transistor VT1, the other end of the inductor L1 is connected to a resistor R5, one end of a capacitor C4 and a collector of a transistor VT2, the other end of the capacitor C4 is grounded, the other end of the resistor R5 is connected to a base of a transistor VT2 and a cathode of a zener diode DZ2, the emitter of the transistor VT2 is connected to one end of the capacitor C5 and an input end of an a/D converter, an anode of the zener diode DZ2 and the other end of the capacitor C5 are grounded in parallel, and an output end of the a/D converter is connected to the controller.
Preferably, the heating unit is a heating plate, and a control end of the heating plate is connected with an output end of the controller.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the temperature probe J1 collects the temperature inside the kettle body in real time, the differential amplification circuit utilizes the principle of a differential amplifier to carry out differential amplification on two paths of detection signals, common-mode interference is effectively inhibited, and the amplification precision of the detection signals is greatly improved;
2. the filter stabilizing circuit utilizes LC filtering to carry out low pass processing to differential amplification circuit's output signal, effectively suppresses the interference of external high frequency clutter to temperature detection, promotes the detected signal precision, and the controller controls heating unit work after carrying out the comparison according to received temperature detection value and system set value, keeps the internal temperature of cauldron invariable, effectively guarantees fertilizer homogeneous mixing, and fermentation effect is good.
Drawings
Fig. 1 is a schematic circuit diagram of the temperature control unit 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.
A temperature control device of an organic fertilizer reaction kettle comprises a kettle body, a temperature control unit and a heating unit, wherein the temperature control unit comprises a temperature probe J1 arranged in the kettle body, and detection signals of the temperature probe J1 are sequentially sent to a differential amplification circuit and a filtering and stabilizing circuit for processing, then are subjected to analog-to-digital conversion, and finally are sent to a controller; the differential amplification circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with a pin 3 of a rheostat RP1 through a resistor R3 and is connected with the collector of a triode VT1 through a capacitor C1, a pin 1 of a rheostat RP1 and the other end of a capacitor C1 are connected with one end of the resistor R1 and a pin 1 of a temperature probe J1, the non-inverting input end of the operational amplifier AR1 is grounded through a resistor R4 and a capacitor C2 which are connected in parallel, the other end of the resistor R1, the cathode of a zener diode DZ1 and a pin 2 of the temperature probe J1 are connected through a resistor R2, the anode of the zener diode DZ1 and a pin 2 of the rheostat RP1 are grounded in parallel, and the output end of the operational amplifier AR1 is connected with the base of the triode VT1 and is grounded through a capacitor C3.
The filter stabilizing circuit comprises an inductor L1, one end of the inductor L1 is connected with an emitter of a triode VT1, the other end of the inductor L1 is connected with a resistor R5, one end of a capacitor C4 and a collector of a triode VT2, the other end of the capacitor C4 is grounded, the other end of the resistor R5 is connected with a base of a triode VT2 and a cathode of a zener diode DZ2, the emitter of the triode VT2 is connected with one end of the capacitor C5 and an input end of an A/D converter, an anode of the zener diode DZ2 and the other end of the capacitor C5 are grounded in parallel, and an output end of the A/D converter is connected with the controller.
The utility model discloses a concrete theory of operation does: the temperature probe J1 collects the temperature in the kettle body in real time, and in order to ensure the accuracy of temperature detection, the detection signal of the temperature probe J1 is firstly sent to a differential amplification circuit for processing. The resistors R1-R3 and the rheostat RP1 divide the detection signal of the temperature probe J1 into two paths by using a resistor division principle and send the two paths of detection signals into two input ends of the operational amplifier AR1, the voltage stabilizing diode plays a role in stabilizing the amplitude of the detection signal output of the temperature probe J1, and the operational amplifier AR1 performs differential amplification on the two paths of detection signals by using a differential amplifier principle, so that common-mode interference is effectively inhibited, and the amplification precision of the detection signals is greatly improved. Meanwhile, the capacitor C2 at the non-inverting input end of the operational amplifier AR1 eliminates the bypass noise on the resistor R4, and the amplification precision is effectively prevented from being influenced by the thermal noise in the operational amplifier process. The triode VT1 forms an emitter follower at the output end of the operational amplifier AR1, so that the amplification efficiency of the detection signal is greatly improved, and the capacitor C3 plays a stabilizing role in the working process of the triode VT 1.
Inductance L1 and electric capacity C4 form LC filtering among the filtering stabilizing circuit and carry out low pass processing to triode VT 1's output signal, effectively restrain the interference of outside high frequency clutter to temperature detection, promote the detected signal precision. Then, the triode voltage stabilizing circuit formed by the resistor R5, the triode VT2 and the voltage stabilizing diode DZ2 is used for stabilizing the voltage of the signal filtered by the LC, so that the stability of the output of the detection signal is greatly improved. And finally, carrying out analog-to-digital conversion on the detection signal by an A/D converter and then sending the detection signal into a controller, and controlling the heating unit to work after the controller compares the received temperature detection value with a system set value. The heating unit is the heating plate, and the control end connection director's of heating plate output keeps the internal temperature of cauldron invariable through the break-make of control heating plate, effectively guarantees fertilizer homogeneous mixing, and fermentation effect is good.
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 (3)
1. The utility model provides a fertilizer reation kettle temperature control device, includes the cauldron body, control by temperature change unit and heating element, its characterized in that: the temperature control unit comprises a temperature probe J1 arranged in the kettle body, and detection signals of the temperature probe J1 are sequentially sent to a differential amplification circuit and a filtering and stabilizing circuit for processing, then are subjected to analog-to-digital conversion, and finally are sent to a controller; the differential amplification circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with a pin 3 of a rheostat RP1 through a resistor R3 and is connected with the collector of a triode VT1 through a capacitor C1, a pin 1 of a rheostat RP1 and the other end of a capacitor C1 are connected with one end of the resistor R1 and a pin 1 of a temperature probe J1, the non-inverting input end of the operational amplifier AR1 is grounded through a resistor R4 and a capacitor C2 which are connected in parallel, the other end of the resistor R1, the cathode of a zener diode DZ1 and a pin 2 of the temperature probe J1 are connected through a resistor R2, the anode of the zener diode DZ1 and a pin 2 of the rheostat RP1 are grounded in parallel, and the output end of the operational amplifier AR1 is connected with the base of the triode VT1 and is grounded through a capacitor C3.
2. The organic fertilizer reaction kettle temperature control device of claim 1, which is characterized in that: the filter stabilizing circuit comprises an inductor L1, one end of the inductor L1 is connected with an emitter of a triode VT1, the other end of the inductor L1 is connected with a resistor R5, one end of a capacitor C4 and a collector of a triode VT2, the other end of the capacitor C4 is grounded, the other end of the resistor R5 is connected with a base of a triode VT2 and a cathode of a zener diode DZ2, the emitter of the triode VT2 is connected with one end of the capacitor C5 and an input end of an A/D converter, an anode of the zener diode DZ2 and the other end of the capacitor C5 are grounded in parallel, and an output end of the A/D converter is connected with the controller.
3. The organic fertilizer reaction kettle temperature control device of claim 2, which is characterized in that: the heating unit is a heating plate, and the control end of the heating plate is connected with the output end of the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023270883.8U CN213876452U (en) | 2020-12-30 | 2020-12-30 | Fertilizer reation kettle temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023270883.8U CN213876452U (en) | 2020-12-30 | 2020-12-30 | Fertilizer reation kettle temperature control device |
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| Publication Number | Publication Date |
|---|---|
| CN213876452U true CN213876452U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023270883.8U Active CN213876452U (en) | 2020-12-30 | 2020-12-30 | Fertilizer reation kettle temperature control device |
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| Country | Link |
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| CN (1) | CN213876452U (en) |
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2020
- 2020-12-30 CN CN202023270883.8U patent/CN213876452U/en active Active
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