CN214620564U - Mold cavity air heater baking temperature monitoring system - Google Patents
Mold cavity air heater baking temperature monitoring system Download PDFInfo
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- CN214620564U CN214620564U CN202120592862.3U CN202120592862U CN214620564U CN 214620564 U CN214620564 U CN 214620564U CN 202120592862 U CN202120592862 U CN 202120592862U CN 214620564 U CN214620564 U CN 214620564U
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- operational amplifier
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- temperature
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Abstract
The utility model discloses a die cavity air heater toasts temperature monitoring system, including air heater, controller and temperature monitoring unit, the temperature monitoring unit includes temperature sensor, temperature sensor's detected signal is sent into in the controller after adjusting circuit and filter converting circuit are put to two fortune in proper order, the controller is used for control the operating condition of air heater, temperature sensor carry out real-time detection to the inside temperature of die cavity, and temperature sensor's detected signal is put adjusting circuit and filter converting circuit through two fortune in proper order and is handled, effectively promotes the accuracy that the temperature detected. The controller enables the temperature inside the cavity to be always within a system set temperature range by controlling the working state of the air heater, so that the casting is well ensured to be in the best baking temperature environment, and the product defects are avoided.
Description
Technical Field
The utility model relates to a die cavity toasts equipment technical field, especially relates to a die cavity air heater toasts temperature monitoring system.
Background
The traditional cavity baking mode is that firewood is put into the cavity and the cavity is baked through ignition, and because the environment protection situation is severe at present, a large amount of dense smoke generated by ignition can pollute the workshop environment and the atmospheric environment. The existing cavity baking mode usually adopts an air heater to heat, the working environment of a workshop is greatly improved, but in the actual use process, because the air output of the air heater is unstable, the temperature in the cavity is unstable, and the defects of air holes and sand holes easily appear on the surface of a casting.
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, an object of the present invention is to provide a baking temperature monitoring system for a cavity air heater.
The technical scheme for solving the problem is as follows: the utility model provides a die cavity air heater toasts temperature monitoring system, includes air heater, controller and temperature monitoring unit, temperature monitoring unit includes temperature sensor, temperature sensor's detected signal sends into the controller after two fortune are put regulating circuit and filter converting circuit in proper order, the controller is used for control the operating condition of air heater.
Further, the dual operational amplifier adjusting circuit comprises an operational amplifier AR1 and an operational amplifier AR2, wherein an inverting input end of the operational amplifier AR1 is connected with the temperature sensor and is grounded through a resistor R1, a non-inverting input end of the operational amplifier AR1 is connected with one ends of resistors R2 and R5, an output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and one end of a voltage regulator tube D1 and is connected with an inverting input end of the operational amplifier AR2 through a resistor R3, the other end of the voltage regulator tube D1 is grounded, a non-inverting input end of the operational amplifier AR2 is grounded through a resistor R4, and an output end of the operational amplifier AR2 is connected with the other end of the resistor R5 and is connected with an inverting input end of the operational amplifier AR2 through a capacitor C1.
Further, the filtering and converting circuit comprises a resistor R6, one end of the resistor R6 is connected to the output end of the operational amplifier AR2 and one end of the resistor R8, the other end of the resistor R6 is grounded through a resistor R7 and a capacitor C2 which are connected in parallel, and the other end of the resistor R8 is grounded through an inductor L1 and is connected to the controller through an a/D converter.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a set up temperature sensor inside the die cavity, carry out real-time detection to the inside temperature of die cavity through temperature sensor, temperature sensor's detected signal is put regulating circuit and filter converting circuit through two fortune in proper order and is handled, effectively promotes the accuracy that the temperature detected.
2. The controller enables the temperature inside the cavity to be always within a system set temperature range by controlling the working state of the air heater, so that the casting is well ensured to be in the best baking temperature environment, and the product defects are avoided.
Drawings
Fig. 1 is a schematic circuit diagram of the temperature monitoring 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.
The utility model provides a die cavity air heater toasts temperature monitoring system, includes air heater, controller and temperature monitoring unit, and temperature monitoring unit includes temperature sensor, temperature sensor's detected signal sends into in the controller after two fortune are put regulating circuit and filter converting circuit in proper order, the controller is used for control the operating condition of air heater.
The double operational amplifier adjusting circuit comprises an operational amplifier AR1 and an operational amplifier AR2, wherein the inverting input end of the operational amplifier AR1 is connected with the temperature sensor and is grounded through a resistor R1, the non-inverting input end of the operational amplifier AR1 is connected with one end of resistors R2 and R5, the output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and one end of a voltage regulator tube D1 and is connected with the inverting input end of the operational amplifier AR2 through a resistor R3, the other end of the voltage regulator tube D1 is grounded, the non-inverting input end of the operational amplifier AR2 is grounded through a resistor R4, and the output end of the operational amplifier AR2 is connected with the other end of the resistor R5 and is connected with the inverting input end of the operational amplifier AR2 through a capacitor C1.
The filtering conversion circuit comprises a resistor R6, one end of a resistor R6 is connected with the output end of the operational amplifier AR2 and one end of a resistor R8, the other end of the resistor R6 is grounded through a resistor R7 and a capacitor C2 which are connected in parallel, and the other end of the resistor R8 is grounded through an inductor L1 and is connected with the controller through an A/D converter.
The utility model discloses when specifically using, at the inside temperature sensor that sets up of die cavity, carry out real-time detection to the inside temperature of die cavity through temperature sensor, in order to guarantee the accuracy that detects, send temperature sensor's detected signal at first into two fortune put the ware regulating circuit and amplify the processing. The operational amplifier AR1 and the operational amplifier AR2 form a series connection mode to amplify the temperature detection signals step by step, and the amplification efficiency is greatly improved. The voltage regulator tube D1 plays a role in stabilizing the signal amplitude at the output end of the operational amplifier AR1, and the stability of the output waveform of the amplified signal is ensured. The capacitor C1 plays a role in integral compensation at the feedback end of the operational amplifier AR2, so as to ensure the continuity of the output waveform of the amplified signal. The output signal of the operational amplifier AR2 is fed back to the operational amplifier AR1 through the resistor R5, so that a large closed loop feedback is formed, the amplification error of the system is greatly reduced, and the accuracy of temperature detection is improved. The filtering conversion circuit adopts an RLC filtering network to accurately filter the output signal of the operational amplifier AR2, so that the detection signal precision is further improved, and the digital quantity is converted by the A/D converter and then sent to the controller.
The controller compares the received temperature detection value with the system set temperature value, when the detection value is smaller than the system set temperature, the controller controls the air heater to work to heat the inner part of the cavity, and when the detection value reaches the system set temperature, the controller controls the air heater to stop working, so that the inner temperature of the cavity is effectively guaranteed to be always in the system set temperature range, the casting is well guaranteed to be in the best baking temperature environment, and the product defects are avoided.
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 die cavity air heater toasts temperature monitoring system, includes air heater, controller and temperature monitoring unit, its characterized in that: the temperature monitoring unit comprises a temperature sensor, detection signals of the temperature sensor are sent into the controller after being processed by the double operational amplifier adjusting circuit and the filtering conversion circuit in sequence, and the controller is used for controlling the working state of the air heater.
2. The baking temperature monitoring system of a cavity air heater according to claim 1, characterized in that: the double operational amplifier adjusting circuit comprises an operational amplifier AR1 and an operational amplifier AR2, wherein the inverting input end of the operational amplifier AR1 is connected with the temperature sensor and is grounded through a resistor R1, the non-inverting input end of the operational amplifier AR1 is connected with one end of resistors R2 and R5, the output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and one end of a voltage regulator tube D1 and is connected with the inverting input end of the operational amplifier AR2 through a resistor R3, the other end of the voltage regulator tube D1 is grounded, the non-inverting input end of the operational amplifier AR2 is grounded through a resistor R4, and the output end of the operational amplifier AR2 is connected with the other end of the resistor R5 and is connected with the inverting input end of the operational amplifier AR2 through a capacitor C1.
3. The baking temperature monitoring system of a cavity air heater according to claim 2, characterized in that: the filter conversion circuit comprises a resistor R6, one end of a resistor R6 is connected with the output end of the operational amplifier AR2 and one end of a resistor R8, the other end of the resistor R6 is grounded through a resistor R7 and a capacitor C2 which are connected in parallel, and the other end of the resistor R8 is grounded through an inductor L1 and is connected with the controller through an A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120592862.3U CN214620564U (en) | 2021-03-24 | 2021-03-24 | Mold cavity air heater baking temperature monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120592862.3U CN214620564U (en) | 2021-03-24 | 2021-03-24 | Mold cavity air heater baking temperature monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214620564U true CN214620564U (en) | 2021-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120592862.3U Active CN214620564U (en) | 2021-03-24 | 2021-03-24 | Mold cavity air heater baking temperature monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214620564U (en) |
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2021
- 2021-03-24 CN CN202120592862.3U patent/CN214620564U/en active Active
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