CN210981481U - Microwave medium production feeding control device - Google Patents
Microwave medium production feeding control device Download PDFInfo
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- CN210981481U CN210981481U CN202020017634.9U CN202020017634U CN210981481U CN 210981481 U CN210981481 U CN 210981481U CN 202020017634 U CN202020017634 U CN 202020017634U CN 210981481 U CN210981481 U CN 210981481U
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Abstract
The utility model discloses a microwave medium production feeding control device, which comprises a feeding hopper, wherein a discharging port of the feeding hopper is provided with a blanking control valve, a spiral conveyer belt is arranged below the feeding hopper, a weighing detection component is arranged on the spiral conveyer belt and comprises a gravity sensor, a detection signal of the gravity sensor is sent into a controller after being processed by a primary amplifying circuit, a stabilizing and adjusting circuit and a filter circuit in sequence, and the controller is used for adjusting the open-close state of the blanking control valve. The metering control is accurate and stable, and the use value is very good.
Description
Technical Field
The utility model relates to a microwave medium production facility technical field especially relates to a microwave medium produces reinforced controlling means.
Background
The microwave dielectric ceramic is a ceramic which is used as a dielectric material to complete microwave signal processing in a microwave frequency band circuit, and is a novel electronic functional ceramic. The microwave dielectric ceramic is prepared according to a chemical formula in the preparation process, for example, mixed powder of zirconium oxide, tin oxide and titanium oxide is weighed according to a formula of the formula (Zr0.8Sn0.2) TiO4 required by mol percent and then placed in a grinding cylinder, zirconium dioxide grinding balls are added to serve as grinding media, absolute ethyl alcohol or deionized water is added to serve as an organic solvent to be mechanically and uniformly mixed, and after powder particles are formed, the organic solvent is removed to be dried. Wherein, the addition of micro powder with different proportions can change the performance of the microwave dielectric ceramic, so the addition of the micro powder in the mixed powder is strictly controlled. At present, the micro powder is weighed and mixed by mainly adopting a weighing hopper to weigh and mix the micro powder, and the powder is easy to adhere in the weighing and discharging process, so that the metering control is not accurate.
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 feeding control device for microwave medium production.
The technical scheme for solving the problem is as follows: the utility model provides a microwave medium production feeding control device, includes the loading hopper, and the loading hopper discharge gate sets up the unloading control valve, and the loading hopper below sets up spiral conveyer belt, be provided with the detection of weighing subassembly on the spiral conveyer belt, the detection of weighing subassembly includes gravity sensor, gravity sensor's detected signal is sent into the controller after elementary amplifier circuit, stable regulating circuit and filter circuit are handled in proper order, the controller is used for adjusting the on-off state of unloading control valve.
Preferably, the primary amplifying circuit comprises a MOS tube Q1, the gate of the MOS tube Q1 is connected with the output end of the gravity sensor and is grounded through a resistor R1, and the drain of the MOS tube Q1 is connected with a +3.3V power supply through a resistor R2 and is grounded through a capacitor C1.
Preferably, the stabilizing and adjusting circuit comprises operational amplifiers U1, U2 and U3, an inverting input terminal of the operational amplifier U1 is connected to a drain of the MOS transistor Q1, a non-inverting input terminal of the operational amplifier U1 is connected to an output terminal of the operational amplifier U1 through a resistor R3, an output terminal of the operational amplifier U1 is connected to an inverting input terminal of the operational amplifier U2 through a resistor R4, a non-inverting input terminal of the operational amplifier U2 is grounded, and an output terminal of the operational amplifier U2 is connected to an inverting input terminal of the operational amplifier U2 through a capacitor C2 and is connected to an inverting input terminal of the operational amplifier U1 through a resistor R5.
Preferably, the output end of the operational amplifier U2 is further connected to the non-inverting input end of the operational amplifier U3 through a resistor R6, the inverting input end of the operational amplifier U3 is connected to the output end of the operational amplifier U3 through a capacitor C3, and the output end of the operational amplifier U3 is connected to the non-inverting input end of the operational amplifier U1 through a resistor R7.
Preferably, the filter circuit includes capacitors C4, C5 and an inductor L1, one end of the capacitor C4 and the inductor L1 is connected to the output end of the operational amplifier U2 and the input end of the controller, the other end of the inductor L1 is connected to one end of the capacitor C5, and the other ends of the capacitors C4 and C5 are grounded.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a loading hopper uses with the spiral conveyer belt cooperation to through weighing detection subassembly real-time detection material addition, the weighing detection is accurate effective, when the material addition can't satisfy the requirement in the unit interval, the controller carries out corresponding regulation to the aperture of unloading control valve, thereby changes the material addition in the unit interval, realizes automatic ratio regulation, and the metering control is accurate stable, has very good use value;
2. the operational amplifiers U1 and U2 in the stable regulating circuit are connected in series to quickly amplify the output signal of the MOS transistor Q1 for the second time, and the capacitor C2 plays a role in signal compensation on the output signal of the operational amplifier U2, so that the stability of the weighing detection signal is improved;
3. the operational amplifier U3 follows the shunt signal output by the operational amplifier U2 and feeds back the shunt signal to the non-inverting input end of the operational amplifier U1, and the input offset voltage of the operational amplifier U1 is eliminated by using the anti-phase offset principle, so that the amplification accuracy of the weighing detection signal is improved.
Drawings
Figure 1 is the utility model discloses detection module circuit schematic diagram weighs.
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 microwave medium production feeding control device, includes the loading hopper, and the loading hopper discharge gate sets up the unloading control valve, and the loading hopper below sets up the spiral conveyer belt, is provided with the detection of weighing subassembly on the spiral conveyer belt, and the detection of weighing subassembly includes gravity sensor, and gravity sensor's detected signal is sent into the controller after elementary amplifier circuit, stable regulating circuit and filter circuit are handled in proper order, and the controller is used for adjusting the on-off state of unloading control valve.
In the actual production proportioning process, various raw material micro powders are required to be respectively added into a feeding hopper, materials of the feeding hopper are firstly sent to a spiral conveying belt for weighing, a gravity sensor converts the weight of the materials into analog signals to be output, and the analog signals are sent to a primary amplifying circuit for amplifying.
The primary amplifying circuit comprises a MOS tube Q1, the grid electrode of the MOS tube Q1 is connected with the output end of the gravity sensor and is grounded through a resistor R1, and the drain electrode of the MOS tube Q1 is connected with a +3.3V power supply through a resistor R2 and is grounded through a capacitor C1. The detection signal of the gravity sensor is sent to an MOS tube Q1 for primary amplification, temperature noise is reduced, and then the detection signal is stabilized by a capacitor C1 and sent to a stabilization regulating circuit for further processing.
The stable regulating circuit comprises operational amplifiers U1, U2 and U3, wherein the inverting input end of the operational amplifier U1 is connected with the drain electrode of a MOS transistor Q1, the non-inverting input end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through a resistor R3, the output end of the operational amplifier U1 is connected with the inverting input end of the operational amplifier U2 through a resistor R4, the non-inverting input end of the operational amplifier U2 is grounded, and the output end of the operational amplifier U2 is connected with the inverting input end of the operational amplifier U2 through a capacitor C2 and is connected with the inverting input end of the operational amplifier U1 through a resistor R5. The operational amplifier U1 and the operational amplifier U2 are connected in series to perform rapid secondary amplification on an output signal of the MOS transistor Q1, and the output signal of the capacitor C2 in the operational amplifier U2 plays a role in signal compensation, so that the stability of a weighing detection signal is improved.
The output end of the operational amplifier U2 is also connected to the non-inverting input end of the operational amplifier U3 through a resistor R6, the inverting input end of the operational amplifier U3 is connected to the output end of the operational amplifier U3 through a capacitor C3, and the output end of the operational amplifier U3 is connected to the non-inverting input end of the operational amplifier U1 through a resistor R7. In order to prevent the imbalance of the detection signal in the amplification process and influence the weighing detection precision, the operational amplifier U3 follows the shunt signal output by the operational amplifier U2 and feeds the shunt signal back to the non-inverting input end of the operational amplifier U1, and the input imbalance voltage of the operational amplifier U1 is eliminated by using the anti-phase cancellation principle, so that the amplification precision of the weighing detection signal is improved.
The filter circuit comprises capacitors C4 and C5 and an inductor L, one ends of the capacitor C4 and the inductor L are connected with the output end of an operational amplifier U2 and the input end of the controller, the other end of the inductor L is connected with one end of a capacitor C5, and the other ends of the capacitors C4 and C5 are grounded, and the filter circuit adopts a L C filter principle to filter the output signal of the operational amplifier U2, so that noise waves in the detection signal are filtered, and the effectiveness of the controller for receiving the gravity detection signal is effectively ensured.
The utility model discloses when specifically using, use through loading hopper and spiral conveyer belt cooperation to through weighing the determine module real-time detection material addition, it is accurate effective to weigh to detect, and the controller compares with the system default according to weight detection value in the unit interval, thereby judges whether the material addition reaches the requirement, and here is current common technique, no longer gives unnecessary details here. When the material addition amount in unit time does not meet the requirement, the controller correspondingly adjusts the opening of the blanking control valve, so that the material addition amount in unit time is changed, automatic proportioning adjustment is realized, metering control is accurate and stable, and the device has a very good use value.
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 a microwave medium production feeding control device, includes the loading hopper, and the loading hopper discharge gate sets up unloading control valve, and the loading hopper below sets up spiral conveying belt, its characterized in that: the automatic feeding device is characterized in that a weighing detection assembly is arranged on the spiral conveying belt and comprises a gravity sensor, detection signals of the gravity sensor are sent into the controller after being processed by a primary amplification circuit, a stabilization regulating circuit and a filter circuit in sequence, and the controller is used for regulating the opening and closing state of the feeding control valve.
2. A microwave media production charging control apparatus as in claim 1, wherein: the primary amplifying circuit comprises a MOS tube Q1, the grid electrode of the MOS tube Q1 is connected with the output end of the gravity sensor and is grounded through a resistor R1, and the drain electrode of the MOS tube Q1 is connected with a +3.3V power supply through a resistor R2 and is grounded through a capacitor C1.
3. A microwave media production charging control apparatus as in claim 2, wherein: the stable regulating circuit comprises operational amplifiers U1, U2 and U3, wherein the inverting input end of the operational amplifier U1 is connected with the drain electrode of a MOS transistor Q1, the non-inverting input end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through a resistor R3, the output end of the operational amplifier U1 is connected with the inverting input end of the operational amplifier U2 through a resistor R4, the non-inverting input end of the operational amplifier U2 is grounded, and the output end of the operational amplifier U2 is connected with the inverting input end of the operational amplifier U2 through a capacitor C2 and is connected with the inverting input end of the operational amplifier U1 through a resistor R5.
4. A microwave media production charging control apparatus as in claim 3, wherein: the output end of the operational amplifier U2 is also connected with the non-inverting input end of the operational amplifier U3 through a resistor R6, the inverting input end of the operational amplifier U3 is connected with the output end of the operational amplifier U3 through a capacitor C3, and the output end of the operational amplifier U3 is connected with the non-inverting input end of the operational amplifier U1 through a resistor R7.
5. A microwave medium production charging control device as claimed in claim 4, characterized in that the filter circuit comprises capacitors C4, C5 and an inductor L1, one end of the capacitor C4 and the inductor L1 is connected with the output end of the operational amplifier U2 and the input end of the controller, the other end of the inductor L1 is connected with one end of the capacitor C5, and the other ends of the capacitors C4 and C5 are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020017634.9U CN210981481U (en) | 2020-01-06 | 2020-01-06 | Microwave medium production feeding control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020017634.9U CN210981481U (en) | 2020-01-06 | 2020-01-06 | Microwave medium production feeding control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210981481U true CN210981481U (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020017634.9U Active CN210981481U (en) | 2020-01-06 | 2020-01-06 | Microwave medium production feeding control device |
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| Country | Link |
|---|---|
| CN (1) | CN210981481U (en) |
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2020
- 2020-01-06 CN CN202020017634.9U patent/CN210981481U/en active Active
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