CN210312558U - Automatic unloader of compound fertilizer - Google Patents
Automatic unloader of compound fertilizer Download PDFInfo
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- CN210312558U CN210312558U CN201921314117.1U CN201921314117U CN210312558U CN 210312558 U CN210312558 U CN 210312558U CN 201921314117 U CN201921314117 U CN 201921314117U CN 210312558 U CN210312558 U CN 210312558U
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Abstract
The utility model discloses an automatic compound fertilizer blanking device, which comprises a charging hopper, a conveying mechanism, a blanking hopper and a storage bin, wherein the charging hopper is provided with a blanking control valve, the conveying mechanism is provided with a weighing sensor, the automatic compound fertilizer blanking device also comprises a weighing detection processing module and a controller, the weighing detection processing module comprises a signal enhancement circuit, a compensation adjusting circuit and a signal stabilizing circuit which are connected in sequence, materials on the conveying mechanism are weighed and detected in real time through the weighing sensor, the output signal of the weighing detection processing module is designed to be processed by a symmetrical retransmission sensor, the dynamic error generated when the weighing sensor responds to the quick change is effectively avoided, the response speed is improved, the signal distortion is inhibited, the steady-state precision of the weighing detection is improved, the signal is dynamically compensated by utilizing the feedback compensation principle, the phenomenon that the adhesion or the material blocking causes the huge deviation to the blanking is, the device has high automation degree, simple and effective control process and effectively improves the production quality of the compound fertilizer.
Description
Technical Field
The utility model relates to a compound fertilizer production facility technical field especially relates to an automatic unloader of compound fertilizer.
Background
The production raw materials of the compound fertilizer have great variability according to the formula requirements. According to the product requirements of different compound fertilizers, different raw materials are mixed. In the raw materials mixing process, general manufacturing enterprise can put into the belt with various raw materials and weigh on weighing, can add the volume of the material in the feed bin through weighing sensor accurate measurement. However, in the actual production process, because the weight of the raw materials on the belt of the conveying mechanism is always in a dynamic change state, some weighing sensors can generate dynamic errors when responding to rapid change, and errors exist in the blanking amount due to response time, amplitude distortion and phase distortion. In addition, the raw materials are adhered or blocked in the blanking process, and serious deviation can be caused if the raw materials are not adjusted in time, so that the production quality of the compound fertilizer is influenced.
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 utility model aims to provide an automatic compound fertilizer blanking device.
The technical scheme for solving the problem is as follows: the utility model provides an automatic unloader of compound fertilizer, includes loading hopper, conveying mechanism, hopper and feed bin down, set up the unloading control valve on the loading hopper, the last weighing sensor that is provided with of conveying mechanism still includes weighing detection processing module and controller, weighing sensor's signal output part connects weighing detection processing module's input, weighing detection processing module's output is connected the input of controller, the output of controller is connected the control end of unloading control valve, weighing detection processing module is including the signal reinforcing circuit, compensation regulating circuit and the signal stabilization circuit that connect gradually.
Preferably, the signal enhancement circuit comprises a resistor R1, one end of the resistor R1 is connected to a signal output end of the weighing sensor, the other end of the resistor R1 is connected to one end of a capacitor C1 and a base of a triode VT1, the other end of the capacitor C1 is grounded, a collector of the triode VT1 is connected to a +5V power supply, the +5V power supply is further connected to a base of a triode VT1 through a resistor R2, an emitter of the triode VT1 is connected to a resistor R3, one end of the capacitor C2 and a non-inverting input end of an operational amplifier AR1, the other ends of the resistor R3 and the capacitor C2 are grounded, an output end of the operational amplifier AR1 is connected to a gate of a MOS transistor Q1, a drain of the MOS transistor Q1 is connected to the +5V power supply through a resistor R4, and a source of the MOS transistor Q1 is connected.
Preferably, the compensation adjusting circuit includes an operational amplifier AR2, an inverting input terminal and a non-inverting input terminal of the operational amplifier AR2 are respectively connected to the source of the MOS transistor Q1 through resistors R6 and R7, the inverting input terminal of the operational amplifier AR2 is further grounded through a capacitor C3, the non-inverting input terminal of the operational amplifier AR2 is further grounded through a resistor R8, and a capacitor C4 is connected between the inverting input terminal and the output terminal of the operational amplifier AR 2.
Preferably, the signal stabilizing circuit comprises a transistor VT2, a collector of the transistor VT2 is connected to the output terminal of the operational amplifier AR2 through a resistor R9, and is connected to a base of the transistor VT2 and a cathode of the zener diode DZ1 through a resistor R10, an emitter of the transistor VT2 is connected to one end of the capacitor C5 and the input terminal of the controller, and the other end of the capacitor C5 is grounded to an anode of the zener diode DZ 1.
Preferably, the controller is a single chip microcomputer.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the weighing sensor is used for weighing and detecting materials on the conveying mechanism in real time, and sending detection signals into the controller after being processed by the weighing and detecting processing module, the controller selects a single chip microcomputer, and the single chip microcomputer is used for carrying out opening and closing adjustment on the blanking control valve according to received signal potential values, so that the automation degree is high, and the control process is simple and effective;
2. the output signal of the weighing detection processing module weighing sensor is designed to be processed, so that the dynamic error of the weighing sensor generated when the weighing sensor responds to rapid change is effectively avoided, the response speed is improved, the signal distortion is inhibited, the steady-state precision of weighing detection is improved, the dynamic compensation is carried out on the signal by utilizing the feedback compensation principle, the phenomenon that adhesion or material blocking causes huge deviation to blanking is avoided, and the production quality of the compound fertilizer is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a control schematic diagram of the present invention.
Fig. 3 is the circuit schematic diagram of the weighing detection processing module 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 drawings 1 to 3. 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.
As shown in figures 1 and 2, the automatic compound fertilizer discharging device comprises a charging hopper 1, a conveying mechanism 3, a discharging hopper 4 and a storage bin 5, wherein a discharging control valve 2 is arranged on the charging hopper 1, a weighing sensor J1 is arranged on the conveying mechanism 3, the automatic compound fertilizer discharging device further comprises a weighing detection processing module and a controller, the signal output end of the weighing sensor J1 is connected with the input end of the weighing detection processing module, the output end of the weighing detection processing module is connected with the input end of the controller, and the output end of the controller is connected with the control end of the discharging control valve 2. On the production raw materials of compound fertilizer sent conveying mechanism 3 through loading hopper 1, the raw materials got into feed bin 5 at last in carrying hopper 4 down, this in-process weighing sensor J1 carries out weighing detection to the material on the conveying mechanism 3 in real time to in sending into the controller with detected signal after weighing detection processing module handles, the singlechip is chooseed for use to the controller, and the singlechip carries out the switching according to received signal potential value to unloading control valve 2 and adjusts.
In order to avoid that the dynamic error generated by the weighing sensor J1 affects the accuracy of weighing detection, the weighing detection processing module is designed to process the output signals of the weighing sensor J1 by a signal enhancement circuit, a compensation adjustment circuit and a signal stabilization circuit which are sequentially connected.
As shown in fig. 3, the signal enhancement circuit includes a resistor R1, one end of the resistor R1 is connected to a signal output end of the load cell J1, the other end of the resistor R1 is connected to one end of a capacitor C1 and a base of a triode VT1, the other end of the capacitor C1 is grounded, a collector of the triode VT1 is connected to a +5V power supply, the +5V power supply is further connected to a base of a triode VT1 through a resistor R2, an emitter of the triode VT1 is connected to one end of a resistor R3 and a capacitor C2 and a non-inverting input end of an operational amplifier AR1, the other ends of the resistor R3 and the capacitor C2 are grounded, an output end of the operational amplifier AR1 is connected to a gate of a MOS transistor Q1, a drain of the MOS transistor Q1 is connected to the +5V power supply through a resistor R4, and a source of the MOS transistor Q. The resistor R1 and the capacitor C1 form an output signal of the RC filtering symmetrical retransmission sensor J1 for noise reduction, the influence of a detection signal of an external high-frequency clutter symmetrical retransmission sensor J1 is avoided, then the triode VT1 is adopted to carry out rapid primary amplification on the filtered signal, the response speed of the signal is improved, and the capacitor C3 plays a role in amplitude stabilization on the output signal of the triode VT 1. The output signal of the triode VT1 is sent into the operational amplifier AR1 for secondary amplification, the output signal of the operational amplifier AR1 is improved by the MOS tube Q1, the good temperature characteristic of the MOS tube is utilized, the temperature drift influence is effectively eliminated, the signal distortion is inhibited, and the steady-state precision of weighing detection is improved.
In order to avoid the influence of adhesion or material blockage of raw materials on the blanking amount in the blanking process, a compensation adjusting circuit is adopted to process the output signal of the signal enhancement circuit. The compensation adjusting circuit comprises an operational amplifier AR2, wherein an inverting input end and a non-inverting input end of the operational amplifier AR2 are respectively connected with a source electrode of a MOS transistor Q1 through resistors R6 and R7, the inverting input end of the operational amplifier AR2 is grounded through a capacitor C3, the non-inverting input end of the operational amplifier AR2 is grounded through a resistor R8, and a capacitor C4 is connected between the inverting input end and the output end of the operational amplifier AR 2. The output signal of the signal enhancement circuit is sent into an operational amplifier AR2 in two paths, one path is sent into the inverting input end of the operational amplifier AR2 after being filtered by an RC formed by a resistor R6 and a capacitor C3, the other path is sent into the non-inverting input end of the operational amplifier AR2 after being reduced by a resistor R7 and a resistor R8 by utilizing a shunt principle, so that the operational amplifier AR2 forms differential amplification, the amplification precision of a detection signal is effectively improved, meanwhile, the capacitor C4 is added at the feedback end of the operational amplifier AR2, and by utilizing a feedback compensation principle, when the weight of a weighing detection signal is suddenly changed, namely the weight of raw materials on the conveying mechanism 3 is suddenly changed due to adhesion or material blocking, the signal can be dynamically compensated, and the generation of huge deviation of the raw materials entering the storage bin 5 in.
The output signal of the operational amplifier AR2 is sent to a signal stabilizing circuit for voltage stabilization output, the signal stabilizing circuit comprises a triode VT2, the collector of the triode VT2 is connected with the output end of the operational amplifier AR2 through a resistor R9 and is connected with the base of a triode VT2 and the cathode of a zener diode DZ1 through a resistor R10, the emitter of the triode VT2 is connected with one end of a capacitor C5 and the input end of a controller, and the other end of the capacitor C5 is grounded with the anode of the zener diode DZ 1. The resistor R10, the triode VT2 and the voltage stabilizing diode DZ1 form a triode voltage stabilizing circuit, the triode voltage stabilizing circuit has a good amplitude stabilizing effect on an output signal of the operational amplifier AR2, and the output signal is filtered by the capacitor C5 and then sent into the single chip microcomputer.
The utility model discloses when specifically using, carry out the detection of weighing to the material on the conveying mechanism 3 in real time through weighing sensor J1, the output signal of the detection processing module symmetrical weighing sensor J1 that designs to weigh is handled, effectively avoid weighing sensor J1 to produce the dynamic error when responding to the quick change, improve response speed, the suppressed signal distortion, improve the steady state precision of weighing the detection, utilize the feedback compensation principle to carry out dynamic compensation to the signal, avoid taking place adhesion or card material messenger to produce huge deviation to the unloading. The single chip microcomputer carries out open-close adjustment on the blanking control valve 2 according to the received signal potential value, so that the weight of the raw materials on the conveying mechanism 3 is always in a dynamic balance state, and the uniform and stable blanking process is ensured. The device has high automation degree, simple and effective control process and effectively improves the production quality of the compound fertilizer.
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 (5)
1. The utility model provides an automatic unloader of compound fertilizer, includes loading hopper, conveying mechanism, hopper and feed bin down, its characterized in that: the automatic feeding device is characterized in that a feeding hopper is provided with a feeding control valve, a conveying mechanism is provided with a weighing sensor, the automatic feeding device further comprises a weighing detection processing module and a controller, the signal output end of the weighing sensor is connected with the input end of the weighing detection processing module, the output end of the weighing detection processing module is connected with the input end of the controller, the output end of the controller is connected with the control end of the feeding control valve, and the weighing detection processing module comprises a signal enhancing circuit, a compensation adjusting circuit and a signal stabilizing circuit which are sequentially connected.
2. The automatic compound fertilizer blanking device of claim 1, characterized in that: the signal enhancement circuit comprises a resistor R1, one end of a resistor R1 is connected with a signal output end of the weighing sensor, the other end of the resistor R1 is connected with one end of a capacitor C1 and a base electrode of a triode VT1, the other end of the capacitor C1 is grounded, a collector electrode of the triode VT1 is connected with a +5V power supply, the +5V power supply is further connected with a base electrode of a triode VT1 through a resistor R2, an emitter electrode of the triode VT1 is connected with a resistor R3, one end of the capacitor C2 and a non-inverting input end of an operational amplifier AR1, the other ends of the resistor R3 and the capacitor C2 are grounded, an output end of the operational amplifier AR1 is connected with a grid electrode of a MOS tube Q1, a drain electrode of the MOS tube Q1 is connected with the +5V power supply through a resistor R4, and a source electrode of.
3. The automatic compound fertilizer blanking device of claim 2, characterized in that: the compensation adjusting circuit comprises an operational amplifier AR2, wherein an inverting input end and a non-inverting input end of the operational amplifier AR2 are respectively connected with a source electrode of a MOS transistor Q1 through resistors R6 and R7, the inverting input end of the operational amplifier AR2 is grounded through a capacitor C3, the non-inverting input end of the operational amplifier AR2 is grounded through a resistor R8, and a capacitor C4 is connected between the inverting input end and the output end of the operational amplifier AR 2.
4. The automatic compound fertilizer blanking device of claim 3, characterized in that: the signal stabilizing circuit comprises a triode VT2, wherein the collector of the triode VT2 is connected with the output end of an operational amplifier AR2 through a resistor R9 and is connected with the base of a triode VT2 and the cathode of a zener diode DZ1 through a resistor R10, the emitter of the triode VT2 is connected with one end of a capacitor C5 and the input end of a controller, and the other end of the capacitor C5 is grounded with the anode of the zener diode DZ 1.
5. An automatic compound fertilizer blanking device according to any one of claims 1 to 4, characterized in that: the controller is a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921314117.1U CN210312558U (en) | 2019-08-14 | 2019-08-14 | Automatic unloader of compound fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921314117.1U CN210312558U (en) | 2019-08-14 | 2019-08-14 | Automatic unloader of compound fertilizer |
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| CN210312558U true CN210312558U (en) | 2020-04-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111642375A (en) * | 2020-06-16 | 2020-09-11 | 张艳枝 | Greening irrigation control system |
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2019
- 2019-08-14 CN CN201921314117.1U patent/CN210312558U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111642375A (en) * | 2020-06-16 | 2020-09-11 | 张艳枝 | Greening irrigation control system |
| CN111642375B (en) * | 2020-06-16 | 2021-10-29 | 张艳枝 | Greening irrigation control system |
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