CN214795730U - Temperature control device for lubricating oil blending tank - Google Patents
Temperature control device for lubricating oil blending tank Download PDFInfo
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- CN214795730U CN214795730U CN202121229957.5U CN202121229957U CN214795730U CN 214795730 U CN214795730 U CN 214795730U CN 202121229957 U CN202121229957 U CN 202121229957U CN 214795730 U CN214795730 U CN 214795730U
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Abstract
The utility model discloses a lubricating oil allotment jar temperature control unit, including temperature detect unit, controller, electric heater and wireless communication module, temperature detect unit includes temperature sensor, and temperature sensor's detected signal is sent into in the controller after leading compensation amplifier circuit and secondary filter stabilization circuit are handled in proper order, the utility model discloses a to the processing of temperature sensor detected signal, greatly promoted the interference of device, effectively avoided causing the detected signal imbalance because of external environment factor changes, promoted the stability and the accuracy of temperature detected signal well to promote the control by temperature change precision of allotment jar.
Description
Technical Field
The utility model relates to a lubricating oil blending device technical field especially relates to a lubricating oil blending tank temperature control device.
Background
Lubricating oil is a liquid lubricant used in various types of machines to reduce friction and protect the machines and workpieces, and mainly plays roles in lubrication, cooling, rust prevention, cleaning, sealing, buffering and the like. In the production process of the lubricating oil, various lubricating oil products with different properties are obtained by blending the purchased base oil and the additives, and in the blending process, the blending temperature and the blending time of the oil product need to be accurately controlled, so that the production quality of the lubricating oil is ensured. However, in the blending process, when the temperature in the blending tank changes, the closed system can cause the change of external environmental factors, so that the phenomena of signal instability, imbalance and the like of the temperature sensor in the detection process are caused, and the temperature control precision of the blending tank is seriously 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 present invention provides a temperature control device for a lubricating oil blending tank.
The technical scheme for solving the problem is as follows: a temperature control device for a lubricating oil blending tank comprises a temperature detection unit, a controller, an electric heater and a wireless communication module, wherein the temperature detection unit comprises a temperature sensor, detection signals of the temperature sensor are sequentially processed by a pre-compensation amplification circuit and a secondary filter stabilizing circuit and then sent into the controller, the secondary filter stabilizing circuit comprises an operational amplifier AR2, the inverting input end of the operational amplifier AR2 is connected with the output end of the pre-compensation amplification circuit and is connected with one end of a resistor R5 and one end of a resistor R6 through a resistor R4 and a capacitor C3 which are connected in parallel, the other end of the resistor R5 is connected with the cathode of a voltage stabilizing diode DZ1 and the base of a triode Q1, the other end of the resistor R6 is grounded with the anode of a voltage stabilizing diode DZ1, the output end of the operational amplifier AR2 is connected with the emitter of a triode Q1 through the resistor R7, the collector of the triode Q1 is connected with one end of a capacitor C4 and the input end of an A/D converter through an inductor L1, the other end of the capacitor C4 is grounded, and the output end of the A/D converter is connected with the controller.
Preferably, the predistortion amplifying circuit comprises an operational amplifier AR1, an inverting input terminal of the operational amplifier AR1 is connected to one end of a resistor R1 and one end of a capacitor C1, the other end of the resistor R1 is connected to a signal output terminal of the temperature sensor, a non-inverting input terminal of the operational amplifier AR1 is grounded through a resistor R2 and a capacitor C2 which are connected in parallel, and an output terminal of the operational amplifier AR1 is connected to the other end of a capacitor C1 and is connected to an inverting input terminal of the operational amplifier AR2 through a resistor R3.
Preferably, the wireless communication module is a WiFi module, and the WiFi module is connected with the controller through a serial port.
Through the technical scheme, the beneficial effects of the utility model are that: the utility model discloses a to the processing of temperature sensor detected signal, greatly promoted the interference of device, effectively avoided causing the detected signal to appear the imbalance because of external environment factor changes, promoted the stability and the accuracy of temperature detected signal well to promote the control by temperature change precision of allotment jar.
Drawings
Fig. 1 is a schematic circuit diagram of the temperature detecting 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 for a lubricating oil blending tank comprises a temperature detection unit, a controller, an electric heater and a wireless communication module, wherein the temperature detection unit comprises a temperature sensor, detection signals of the temperature sensor are sequentially processed by a pre-compensation amplification circuit and a secondary filter stabilizing circuit and then sent into the controller, the secondary filter stabilizing circuit comprises an operational amplifier AR2, the inverting input end of the operational amplifier AR2 is connected with the output end of the pre-compensation amplification circuit and is connected with one end of a resistor R5 and one end of a resistor R6 through a resistor R4 and a capacitor C3 which are connected in parallel, the other end of the resistor R5 is connected with the cathode of a voltage stabilizing diode DZ1 and the base of a triode Q1, the other end of the resistor R6 and the anode of a voltage stabilizing diode DZ1 are grounded, the output end of the operational amplifier AR2 is connected with the emitter of a triode Q1 through the resistor R7, the collector of the triode Q1 is connected with one end of a capacitor C4 and the input end of an A/D converter through an inductor L1, the other end of the capacitor C4 is grounded, and the output end of the A/D converter is connected with the controller.
The pre-compensation amplifying circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and one end of a capacitor C1, the other end of the resistor R1 is connected with the signal output end of the temperature sensor, 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, and the output end of the operational amplifier AR1 is connected with the other end of a capacitor C1 and is connected with the inverting input end of an operational amplifier AR2 through a resistor R3.
The utility model discloses a concrete work flow and principle do: utilize temperature sensor to carry out real-time detection to the temperature in the allotment jar to convert electrical signal output, its detected signal sends into at first in the leading compensation amplifier circuit and amplifies, and wherein, electric capacity C1 plays the phase compensation effect at the fortune in-process of putting, guarantees that stable detected signal output waveform is steady continuous. The capacitor C2 is used as a bypass capacitor at the non-inverting input end of the operational amplifier AR1 to eliminate thermal noise on a loop of the resistor R2, so that external environmental factor interference is avoided, and the amplification working precision of the operational amplifier AR1 is ensured.
The secondary filter stabilizing circuit further processes an output signal of the operational amplifier AR1, wherein the operational amplifier AR2 serves as a secondary amplifier to further enhance a detection signal, the resistor R4 and the capacitor C3 are connected in parallel to form a compensation stabilizing component at a negative feedback end of the operational amplifier AR2, so that the stability of the amplification output of the detection signal is greatly improved, meanwhile, the triode Q1 forms emitter following amplification at an output end of the operational amplifier AR2, the detection signal processing efficiency is improved, the base voltage of the triode Q1 is subjected to reference by the Zener diode DZ1, so that the output amplitude of the detection signal is stabilized, and finally, the LC filter formed by the inductor L1 and the capacitor C4 is subjected to noise reduction and filtering to improve the signal accuracy, so that the accuracy of temperature detection is greatly improved.
The A/D converter is used for converting a detection signal of the analog quantity into a digital quantity and then sending the digital quantity into the controller, the controller calculates the real-time temperature in the blending tank through internal data processing, when a temperature detection value is smaller than a system set temperature, the controller drives the electric heater to work to increase the water bath temperature in the blending tank, and when the water bath temperature reaches a set value, the controller cuts off the power supply of the electric heater to stop heating, so that the lubricating oil blending is always at the optimal temperature.
Meanwhile, the controller is communicated with the user side through the wireless communication module, and when the wireless communication module is specifically set, the WiFi module is selected for use and connected with the controller through a serial port. The controller sends the real-time temperature value in the blending tank to the user side through the WiFi module, and the user side can also remotely control the heating temperature and the heating state of the blending tank through the intelligent equipment, so that remote control is realized, and the using effect is good.
To sum up, the utility model discloses a to the processing of temperature sensor detected signal, greatly promoted the interference of device, effectively avoided causing the detected signal to appear the imbalance because of external environment factor changes, promoted the stability and the accuracy of temperature detected signal well to promote the control by temperature change precision of allotment jar.
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 lubricating oil blending tank temperature control device, includes temperature detecting element, controller, electric heater and wireless communication module, its characterized in that: the temperature detection unit comprises a temperature sensor, detection signals of the temperature sensor are processed by a pre-compensation amplifying circuit and a secondary filter stabilizing circuit in sequence and then are sent to the controller, the secondary filter stabilizing circuit comprises an operational amplifier AR2, the inverting input end of the operational amplifier AR2 is connected with the output end of the pre-compensation amplifying circuit, one ends of resistors R5 and R6 are connected through a resistor R4 and a capacitor C3 which are connected in parallel, the other end of a resistor R5 is connected with the cathode of a voltage stabilizing diode DZ1 and the base of a triode Q1, the other end of the resistor R6 and the anode of a voltage stabilizing diode DZ1 are grounded, the output end of an operational amplifier AR2 is connected with the emitter of a triode Q1 through a resistor R7, the collector of a triode Q1 is connected with one end of a capacitor C4 and the input end of an A/D converter through an inductor L1, the other end of a capacitor C4 is grounded, and the output end of the A/D converter is connected with the controller.
2. The lubricating oil blending tank temperature control device of claim 1, wherein: the pre-compensation amplifying circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and one end of a capacitor C1, the other end of the resistor R1 is connected with the signal output end of the temperature sensor, 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, and the output end of the operational amplifier AR1 is connected with the other end of a capacitor C1 and is connected with the inverting input end of an operational amplifier AR2 through a resistor R3.
3. The lubricating oil blending tank temperature control device according to claim 1 or 2, characterized in that: the wireless communication module selects a WiFi module, and the WiFi module is connected with the controller through a serial port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121229957.5U CN214795730U (en) | 2021-06-03 | 2021-06-03 | Temperature control device for lubricating oil blending tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121229957.5U CN214795730U (en) | 2021-06-03 | 2021-06-03 | Temperature control device for lubricating oil blending tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214795730U true CN214795730U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121229957.5U Active CN214795730U (en) | 2021-06-03 | 2021-06-03 | Temperature control device for lubricating oil blending tank |
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| Country | Link |
|---|---|
| CN (1) | CN214795730U (en) |
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2021
- 2021-06-03 CN CN202121229957.5U patent/CN214795730U/en active Active
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