CN216678931U - Electrostatic spraying drying device - Google Patents
Electrostatic spraying drying device Download PDFInfo
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- CN216678931U CN216678931U CN202123065089.4U CN202123065089U CN216678931U CN 216678931 U CN216678931 U CN 216678931U CN 202123065089 U CN202123065089 U CN 202123065089U CN 216678931 U CN216678931 U CN 216678931U
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- operational amplifier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses an electrostatic spray drying device, which comprises an air heater, a temperature monitoring unit and a controller, wherein the temperature monitoring unit comprises an infrared temperature measuring sensor for detecting the surface temperature of spray plastics, detection signals of the infrared temperature measuring sensor are sequentially processed by a pre-amplification stabilizing circuit and a filtering isolating circuit and then are sent into the controller, and the controller is used for adjusting the working power of the air heater; the utility model discloses add infrared temperature sensor in stoving production process and carry out real-time measurement to the surface temperature of product spraying plastics, utilize infrared temperature measurement principle to realize quick contactless measurement, the convenience of measuring has both been guaranteed, do not influence product production efficiency again, practice thrift the production line and reform transform the cost, adopt preamplification stabilizing circuit and filter isolation circuit to take care of infrared temperature sensor's detected signal, effective filtering external clutter infringes, temperature detection signal precision has greatly been promoted, guarantee the validity of stoving temperature control regulation then.
Description
Technical Field
The utility model relates to the technical field of electrostatic plastic spraying equipment, in particular to an electrostatic plastic spraying drying device.
Background
Electrostatic powder spraying equipment (electrostatic spraying machine) for electrostatic spraying is used for spraying powder coating on the surface of a workpiece, and under the action of static electricity, powder can be uniformly adsorbed on the surface of the workpiece to form a powdery coating; the powdery coating is baked at high temperature, leveled and cured to become final coatings with different effects (different kinds of effects of the powdery coating). The static spraying plastics in-process need utilize drying equipment to carry out solidification air-dry to the product, nevertheless because current drying-machine all is the fixed frequency work, and drying temperature hardly obtains accurate control, and the stoving time that often appears surpasss the standard and influences the stoving effect, and then influences the product spraying plastics quality.
The present invention provides a new solution to this problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the present invention is directed to provide an electrostatic spraying drying device.
The technical scheme for solving the problem is as follows: the utility model provides an electrostatic spraying plastics drying device, includes air heater, temperature monitoring unit and controller, the temperature monitoring unit is including the infrared temperature sensor who is used for detecting spraying plastics surface temperature, infrared temperature sensor's detected signal sends into after preamplification stabilizing circuit and filtering isolation circuit are handled in proper order in the controller, the controller is used for adjusting the operating power of air heater.
Further, the pre-amplification stabilizing circuit comprises an operational amplifier AR1, an inverting input end of the operational amplifier AR1 is connected with a signal output end of the infrared temperature measuring sensor sequentially through a resistor R1 and a capacitor C1, and is connected with an output end of the operational amplifier AR1 through a resistor R3 and a capacitor C3 which are connected in parallel, and a non-inverting input end of the operational amplifier AR1 is grounded through a resistor R2 and a capacitor C2 which are connected in parallel.
Further, the filtering isolation circuit comprises a triode VT1, a collector of the triode VT1 is connected with one end of a capacitor C4 and an output end of an operational amplifier AR1, a base of the triode VT1 is connected with the other end of the capacitor C4, and is grounded through a resistor R4 and a capacitor C5 which are connected in parallel, an emitter of the triode VT1 is connected with an inverted input end of the operational amplifier AR2 and is grounded through a resistor R5, and an inverted input end of the operational amplifier AR2 is connected with an output end of the operational amplifier AR2 and the controller through a capacitor C6.
Through the technical scheme, the utility model has the beneficial effects that:
1. according to the utility model, the infrared temperature measurement sensor is added in the drying production process to measure the surface temperature of the product sprayed with plastic in real time, and the infrared temperature measurement principle is utilized to realize quick and non-contact measurement, so that the convenience of measurement is ensured, the production efficiency of the product is not influenced, and the modification cost of the production line is saved;
2. adopt preamplification stabilizing circuit and filtering isolation circuit to take care of infrared temperature sensor's detected signal, effective filtering external clutter infringes, has greatly promoted temperature detected signal precision, guarantees the validity that stoving temperature control adjusted then.
Drawings
FIG. 1 is a schematic circuit diagram of a temperature monitoring unit according to the present invention.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities 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 of 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 an electrostatic spraying plastics drying device, includes air heater, temperature monitoring unit and controller, and the temperature monitoring unit is including the infrared temperature sensor who is used for detecting spraying plastics surface temperature, infrared temperature sensor's detected signal sends into after preamplification stabilizing circuit and filtering isolation circuit are handled in proper order in the controller, the controller is used for adjusting the operating power of air heater.
The pre-amplification stabilizing circuit comprises an operational amplifier AR1, the inverting input end of the operational amplifier AR1 is connected with the signal output end of the infrared temperature measuring sensor through a resistor R1 and a capacitor C1 in sequence, and is connected with the output end of the operational amplifier AR1 through a resistor R3 and a capacitor C3 which are connected in parallel, and the non-inverting input end of the operational amplifier AR1 is grounded through a resistor R2 and a capacitor C2 which are connected in parallel.
The filtering isolation circuit comprises a triode VT1, wherein the collector of the triode VT1 is connected with one end of a capacitor C4 and the output end of an operational amplifier AR1, the base of the triode VT1 is connected with the other end of a capacitor C4 and is grounded through a resistor R4 and a capacitor C5 which are connected in parallel, the emitter of the triode VT1 is connected with the inverted input end of the operational amplifier AR2 and is grounded through a resistor R5, and the inverted input end of the operational amplifier AR2 is connected with the output end of the operational amplifier AR2 and the controller through a capacitor C6.
When the infrared temperature measuring device is used specifically, the infrared temperature measuring sensor is added in the drying production process to measure the surface temperature of the product sprayed with plastic in real time, and the infrared temperature measuring principle is utilized to realize quick and non-contact measurement, so that the convenience of measurement is ensured, the production efficiency of the product is not influenced, and the modification cost of a production line is saved. In order to ensure the accuracy of detection, a pre-amplification stabilizing circuit is firstly adopted to process a temperature detection signal, wherein a capacitor C1 sends the temperature detection signal into an operational amplifier AR1 for pre-amplification after blocking, and the output signal of the operational amplifier AR1 is well improved by using a resistance-capacitance feedback compensation principle formed by a resistor R3 and a capacitor C3 in the operational amplification process; meanwhile, the capacitor C2 is arranged at the non-inverting input end of the operational amplifier AR1 to eliminate thermal noise on a loop of the resistor R2, so that the operational amplifier AR1 is greatly guaranteed to keep good working precision in a complex environment, and system errors are reduced.
Secondly, the filter isolation circuit adopts triode VT1 to follow and amplify the output signal of the operational amplifier AR1, and adds a second-order band-pass filter network consisting of resistors R4 and R5 and capacitors C4 and C5 to frequency-select the temperature detection signal, so that the external clutter intrusion is effectively filtered, and the accuracy of the temperature detection signal is greatly improved. And finally, the temperature detection signal is isolated and output by the operational amplifier AR2 by using the principle of a voltage follower, so that the electric interference controller is prevented from receiving the temperature detection signal. The controller carries out waveform analysis processing on the temperature detection signal after receiving the temperature detection signal, calculates the real-time temperature of the surface of the product sprayed plastic, and enables the surface temperature of the product sprayed plastic to be always in a system set standard range by adjusting the working power of the air heater, thereby greatly improving the electrostatic spraying and drying effect and ensuring the production quality of the product.
While the utility model has been described in further detail with reference to specific embodiments thereof, it is not intended that the utility model be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (3)
1. The utility model provides an electrostatic spraying plastics drying device, includes air heater, temperature monitoring unit and controller, its characterized in that: the temperature monitoring unit comprises an infrared temperature measuring sensor for detecting the surface temperature of the sprayed plastic, detection signals of the infrared temperature measuring sensor are sent into the controller after being processed by the pre-amplification stabilizing circuit and the filtering isolating circuit in sequence, and the controller is used for adjusting the working power of the air heater.
2. The electrostatic plastic-spraying drying device according to claim 1, characterized in that: the pre-amplification stabilizing circuit comprises an operational amplifier AR1, an inverting input end of the operational amplifier AR1 is connected with a signal output end of the infrared temperature measuring sensor sequentially through a resistor R1 and a capacitor C1, the inverting input end of the operational amplifier AR1 is connected with an output end of the operational amplifier AR1 through a resistor R3 and a capacitor C3 which are connected in parallel, and a non-inverting input end of the operational amplifier AR1 is grounded through a resistor R2 and a capacitor C2 which are connected in parallel.
3. The electrostatic plastic-spraying drying device according to claim 2, characterized in that: the filtering isolation circuit comprises a triode VT1, wherein the collector of the triode VT1 is connected with one end of a capacitor C4 and the output end of an operational amplifier AR1, the base of the triode VT1 is connected with the other end of the capacitor C4 and is grounded through a resistor R4 and a capacitor C5 which are connected in parallel, the emitter of the triode VT1 is connected with the inverting input end of the operational amplifier AR2 and is grounded through a resistor R5, and the inverting input end of the operational amplifier AR2 is connected with the output end of the operational amplifier AR2 and the controller through a capacitor C6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123065089.4U CN216678931U (en) | 2021-12-08 | 2021-12-08 | Electrostatic spraying drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123065089.4U CN216678931U (en) | 2021-12-08 | 2021-12-08 | Electrostatic spraying drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216678931U true CN216678931U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123065089.4U Active CN216678931U (en) | 2021-12-08 | 2021-12-08 | Electrostatic spraying drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216678931U (en) |
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2021
- 2021-12-08 CN CN202123065089.4U patent/CN216678931U/en active Active
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