CN220677668U - Automatic proportioning control device for chemical raw materials - Google Patents
Automatic proportioning control device for chemical raw materials Download PDFInfo
- Publication number
- CN220677668U CN220677668U CN202321834393.7U CN202321834393U CN220677668U CN 220677668 U CN220677668 U CN 220677668U CN 202321834393 U CN202321834393 U CN 202321834393U CN 220677668 U CN220677668 U CN 220677668U
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- Prior art keywords
- operational amplifier
- weighing
- resistor
- capacitor
- controller
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- 239000002994 raw material Substances 0.000 title claims abstract description 16
- 239000000126 substance Substances 0.000 title claims abstract description 9
- 238000005303 weighing Methods 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract description 14
- 230000003321 amplification Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 26
- 239000013064 chemical raw material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000001143 conditioned effect Effects 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003317 industrial substance Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Control Of Non-Electrical Variables (AREA)
Abstract
The utility model discloses an automatic proportioning control device for chemical raw materials, which comprises a raw material bin, wherein a weighing bin is arranged below the raw material bin, a weighing unit and an electric control blanking valve are arranged below the weighing bin, the weighing unit comprises a weighing sensor for detecting the mass of materials in the weighing bin, detection signals of the weighing sensor are sequentially processed by a pre-amplifying shaping circuit and a secondary notch noise reduction circuit and then are sent into a controller, and the output end of the controller is connected with the control end of the electric control blanking valve; according to the utility model, the detection signals of the weighing sensor are conditioned step by adopting the pre-amplification shaping circuit and the secondary notch noise reduction circuit, so that the influence caused by unstable symmetrical weight detection in the blanking process is effectively avoided, the influence caused by external environment interference factors on the symmetrical weight detection signals is reduced, the control precision of the raw material adding automatic control equipment is greatly improved, and the accurate production proportion of the high-temperature adhesive is ensured.
Description
Technical Field
The utility model relates to the technical field of adhesive production equipment, in particular to an automatic proportioning control device for chemical raw materials.
Background
With the increasing requirements of industry on materials, structures and the like operating in high-temperature environments, various high-temperature protective coatings are developed, from single-layer coatings to multi-layer composite gradient coatings in the traditional sense, coating materials from pure metal materials to current ceramic coatings and composite coatings of metal materials and ceramic materials, and the coating materials are endowed with corrosion resistance, oxidation resistance protection, certain special functions and the like. Through traditional air spraying, an adhesive which forms a film at a lower temperature and even at normal temperature and can resist high temperature becomes a bottleneck problem in the development of the field of high-temperature protection, and the adhesive also arouses the interest of a large number of researchers.
Currently, the binders commonly used mainly include silicate, phosphate, sol and the like. Automatic control is gradually realized in the production process of the composite high-temperature adhesive, and the blanking amount of each raw material component is controlled by automatically proportioning chemical raw materials, so that the manual labor intensity is greatly reduced; and some raw materials have viscosity, such as some colloid auxiliary agents, filling agents and the like, are easily attached to the inner wall of a discharging bin in the discharging process, so that the discharging process is unstable, the discharging amount cannot be accurately controlled, and the production of the composite high-temperature adhesive cannot reach the optimal effect.
The present utility model provides a new solution to this problem.
Disclosure of Invention
Aiming at the situation, the utility model aims to overcome the defects of the prior art and provide an automatic proportioning control device for chemical raw materials.
The technical scheme for solving the problems is as follows: the utility model provides an automatic proportioning control device of industrial chemicals, includes the former feed bin, is provided with the storehouse of weighing under the former feed bin, is provided with weighing unit and automatically controlled unloading valve below the storehouse of weighing, the unit of weighing is including being used for detecting weighing the weighing sensor of storehouse internal material quality, weighing sensor's detected signal loops through pre-amplification shaping circuit, secondary notch noise reduction circuit and sends into in the controller after handling, the output of controller is connected automatically controlled unloading valve control end.
Preferably, the pre-amplifying shaping circuit includes an operational amplifier AR1, an inverting input end of the operational amplifier AR1 is connected to a signal output end of the weighing sensor through a resistor R1 and grounded through a capacitor C1, a non-inverting input end of the operational amplifier AR1 is grounded, an output end of the operational amplifier AR1 is connected to an inverting input end of the operational amplifier AR1 through a capacitor C2 and connected to a capacitor C3 through a varistor RP1, one end of the resistor R2 is grounded to a cathode of the diode VD1, and the other end of the resistor R2 is connected to an inverting input end of the operational amplifier AR1 with an anode of the diode VD 1.
Preferably, the secondary notch noise reduction circuit includes an operational amplifier AR2, an inverting input end of the operational amplifier AR2 is connected to one end of the resistor R3 and the capacitors C4 and C5, the other end of the capacitor C4 is connected to one end of the capacitor C3 through the resistor R4, an in-phase input end of the operational amplifier AR2 is grounded, and an output end of the operational amplifier AR2 is connected to the other end of the capacitor C5.
Preferably, a resistor R5 and a zener diode DZ1 are further disposed between the output end of the operational amplifier AR2 and the controller, one end of the resistor R5 is connected to the cathode of the zener diode DZ1, and the other end of the resistor R5 is grounded to the anode of the zener diode DZ 1.
Through the technical scheme, the utility model has the beneficial effects that: according to the utility model, the detection signals of the weighing sensor are conditioned step by adopting the pre-amplification shaping circuit and the secondary notch noise reduction circuit, so that the influence caused by unstable symmetrical weight detection in the blanking process is effectively avoided, the influence caused by external environment interference factors on the symmetrical weight detection signals is reduced, the control precision of the raw material adding automatic control equipment is greatly improved, and the accurate production proportion of the high-temperature adhesive is ensured.
Drawings
Fig. 1 is a schematic circuit diagram of a weighing cell according to the utility model.
Detailed Description
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying fig. 1. The following embodiments are described in detail with reference to the drawings.
Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
The utility model provides an automatic proportioning control device of industrial chemicals, includes former feed bin, is provided with the storehouse of weighing under the former feed bin, and the storehouse below of weighing is provided with weighing unit and automatically controlled unloading valve, and this setting is mature prior art, and no detail is given here.
As shown in fig. 1, the weighing unit comprises a weighing sensor for detecting the mass of materials in the weighing bin, detection signals of the weighing sensor are sequentially processed by the pre-amplification shaping circuit and the secondary notch noise reduction circuit and then sent into the controller, and the output end of the controller is connected with the control end of the electric control blanking valve. The pre-amplifying shaping circuit comprises an operational amplifier AR1, wherein an inverting input end of the operational amplifier AR1 is connected with a signal output end of the weighing sensor through a resistor R1 and is grounded through a capacitor C1, a non-inverting input end of the operational amplifier AR1 is grounded, an output end of the operational amplifier AR1 is connected with an inverting input end of the operational amplifier AR1 through a capacitor C2 and is connected with a capacitor C3 and one end of a resistor R2 and a cathode of a diode VD1 through a rheostat RP1, the other end of the capacitor C3 is grounded, and the other end of the resistor R2 and an anode of the diode VD1 are connected with the inverting input end of the operational amplifier AR 1.
The secondary notch noise reduction circuit is used for further amplifying and adjusting an output signal of the pre-amplifying shaping circuit, and the specific structure of the secondary notch noise reduction circuit comprises an operational amplifier AR2, wherein inverting input ends of the operational amplifier AR2 are connected with capacitors C4 and C5 and one end of a resistor R3, the other end of the capacitor C4 is connected with the other end of the resistor R3 and one end of the capacitor C3 through the resistor R4, a non-inverting input end of the operational amplifier AR2 is grounded, and an output end of the operational amplifier AR2 is connected with the other end of the capacitor C5 and the controller.
A resistor R5 and a zener diode DZ1 are further arranged between the output end of the operational amplifier AR2 and the controller, one end of the resistor R5 is connected with the cathode of the zener diode DZ1 to be connected with the output end of the operational amplifier AR1, and the other end of the resistor R5 is grounded with the anode of the zener diode DZ 1. The output signal of the operational amplifier AR2 is subjected to amplitude stabilization treatment by arranging the voltage stabilizing diode DZ1 at the output end of the operational amplifier AR2, so that the stability of the symmetrical weight detection signal receiving of the controller is ensured.
When the weighing sensor is specifically used, the material quality in a weighing bin is detected in real time by using the weighing sensor and converted into an electric signal proportional to the material quality to be output, the detected signal is firstly sent into a pre-amplifying shaping circuit to be processed, RC filtering formed by a resistor R1 and a capacitor C1 is used for carrying out preliminary noise reduction on the weighing detected signal, mechanical peak interference generated by impact in the falling process is eliminated, then the weighing detected signal is sent into an operational amplifier AR1 to be subjected to signal amplification processing, in the working process of the operational amplifier AR1, a capacitor C2 plays a role of signal compensation, the symmetrical weight detected signal plays a good role of compensation when uneven blanking occurs, the waveform of the detected signal output is improved, meanwhile, a shaping network formed by connecting a resistor R2 and a diode VD1 in parallel is added in the operational process by using a closed loop feedback principle, the effect of effectively correcting the detected signal through diode shaping, the introduction of an alternating current clutter signal is avoided, and meanwhile errors of a weighing control system are avoided;
further, the secondary notch noise reduction circuit adopts the operational amplifier AR2 to carry out secondary amplification on the detection signal, the amplitude of the detection signal is improved to a standard range which can be identified by the controller, meanwhile, the resistors R3 and R4 and the capacitors C4 and C5 form a low-pass filter network in the working process of the operational amplifier AR2, and the power frequency interference existing in the weighing detection process is filtered, so that the weighing detection precision is effectively improved; and finally, the detection signal is sent into the controller after the amplitude is stabilized through the voltage stabilizing diode DZ1, and when the detection signal is specifically set, the controller adopts the PLC controller, calculates the real-time blanking amount in the weighing bin after the operation processing is performed on the weighing detection signal through the PLC controller, and controls the electric control blanking valve to be closed when the blanking amount reaches the system set value, so that the automatic blanking accurate control is realized.
In summary, the detection signals of the weighing sensor are conditioned step by adopting the pre-amplification shaping circuit and the secondary notch noise reduction circuit, so that the influence caused by unstable symmetrical weight detection in the blanking process is effectively avoided, the influence caused by symmetrical weight detection signals of external environment interference factors is reduced, the control precision of the raw material adding automatic control equipment is greatly improved, and the accurate production proportion of the high-temperature adhesive is ensured.
While the utility model has been described in connection with certain embodiments, it is not intended that the utility model be limited thereto; for those skilled in the art to which the present utility model pertains and the related art, on the premise of based on the technical scheme of the present utility model, the expansion, the operation method and the data replacement should all fall within the protection scope of the present utility model.
Claims (4)
1. The utility model provides a chemical raw material automatic proportion controlling means, includes former feed bin, is provided with the storehouse of weighing under the former feed bin, and the storehouse below of weighing is provided with weighing unit and automatically controlled unloading valve, its characterized in that: the weighing unit comprises a weighing sensor for detecting the mass of materials in the weighing bin, detection signals of the weighing sensor are sequentially processed by the pre-amplification shaping circuit and the secondary notch noise reduction circuit and then are sent into the controller, and the output end of the controller is connected with the control end of the electric control blanking valve.
2. The automatic proportioning control device for chemical raw materials according to claim 1, wherein: the pre-amplification shaping circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with the signal output end of the weighing sensor through a resistor R1 and grounded through a capacitor C1, the non-inverting input end of the operational amplifier AR1 is grounded, the output end of the operational amplifier AR1 is connected with the inverting input end of the operational amplifier AR1 through a capacitor C2 and connected with a capacitor C3 and one end of a resistor R2 and the cathode of a diode VD1 through a rheostat RP1, the other end of the capacitor C3 is grounded, and the other end of the resistor R2 and the anode of the diode VD1 are connected with the inverting input end of the operational amplifier AR 1.
3. The automatic proportioning control device for chemical raw materials according to claim 2, wherein: the secondary notch noise reduction circuit comprises an operational amplifier AR2, the inverting input end of the operational amplifier AR2 is connected with one ends of capacitors C4 and C5 and a resistor R3, the other end of the capacitor C4 is connected with the other end of the resistor R3 and one end of the capacitor C3 through the resistor R4, the non-inverting input end of the operational amplifier AR2 is grounded, and the output end of the operational amplifier AR2 is connected with the other end of the capacitor C5 and the controller.
4. The automatic proportioning control device for chemical raw materials according to claim 3, wherein: and a resistor R5 and a zener diode DZ1 are further arranged between the output end of the operational amplifier AR2 and the controller, one end of the resistor R5 is connected with the cathode of the zener diode DZ1 to be connected with the output end of the operational amplifier AR1, and the other end of the resistor R5 is grounded with the anode of the zener diode DZ 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321834393.7U CN220677668U (en) | 2023-07-12 | 2023-07-12 | Automatic proportioning control device for chemical raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321834393.7U CN220677668U (en) | 2023-07-12 | 2023-07-12 | Automatic proportioning control device for chemical raw materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220677668U true CN220677668U (en) | 2024-03-29 |
Family
ID=90370646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321834393.7U Active CN220677668U (en) | 2023-07-12 | 2023-07-12 | Automatic proportioning control device for chemical raw materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220677668U (en) |
-
2023
- 2023-07-12 CN CN202321834393.7U patent/CN220677668U/en active Active
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