CN114432952A - Automatic leveling liquid concentration control method - Google Patents
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- CN114432952A CN114432952A CN202210136832.0A CN202210136832A CN114432952A CN 114432952 A CN114432952 A CN 114432952A CN 202210136832 A CN202210136832 A CN 202210136832A CN 114432952 A CN114432952 A CN 114432952A
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 33
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- 239000012141 concentrate Substances 0.000 claims 1
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Abstract
The invention relates to the technical field of strip steel continuous heat treatment, and discloses an automatic leveling liquid concentration control method, which comprises a leveling liquid system, wherein the leveling liquid system comprises a leveling liquid stock solution tank, a leveling liquid mixing tank, a leveling liquid stock solution pump, a leveling liquid stock solution flowmeter, a desalted water electromagnetic valve, a desalted water flowmeter, a stirring pump and a leveling liquid concentration controller, a stirrer, an online leveling liquid conductivity meter and a liquid level meter are arranged in the leveling liquid mixing tank, leveling liquids with different concentrations are prepared in a laboratory by using the leveling liquid stock solution and desalted water used by a unit, the conductivity of the leveling liquids with different concentrations is measured, and automatic control is performed according to the conductivity; the invention can realize the automatic control of the concentration of the leveling liquid without a leveling liquid concentration detector, does not depend on manual sampling and sample sending to measure the concentration of chloride ions in the leveling liquid, realizes the automatic detection of the concentration of the chloride ions and the automatic regulation of the over-standard concentration of the chloride ions, realizes the online recycling of the leveling liquid, reduces the consumption of the leveling liquid and desalted water, and realizes the unmanned control of the concentration of the leveling liquid and the over-standard concentration of the chloride ions.
Description
Technical Field
The invention relates to the technical field of continuous heat treatment of strip steel, in particular to an automatic control method for the concentration of a leveling liquid.
Background
In order to improve the shape of the strip, adjust the mechanical properties or eliminate the yield platform and obtain proper surface roughness of the strip, the strip is leveled by a leveling machine in a continuous annealing or hot galvanizing unit. Leveling liquid is used in leveling. For a continuous annealing unit, the leveling liquid can play a role in lubrication and cooling, and for a hot galvanizing unit, the leveling liquid can eliminate zinc-sticking roll marks and improve the surface quality of strip steel. For example, Chinese patent CN200710023703.6 discloses an anti-yellow spot environment-friendly wet leveling solution, which contains 5-35% of organic acid, 5-35% of organic amine, 2-20% of corrosion inhibitor, 2-20% of film forming agent, 1-10% of film forming promoter, 0.1-1% of surfactant and 10-35% of water, has excellent cleaning property and good antirust property, does not have the problems of plate surface corrosion and color spot generation of a leveled steel plate, has good quality of the steel plate, has proper lubricating property, does not have the problem of nitrous acid pollution, has high film forming speed, and does not have the problem of yellow spot generation on the surface of the leveled steel plate within 2 minutes, so that the steel plate has good quality.
The concentration of different leveling liquids needs to be controlled within a certain concentration range, and the higher the concentration is, the better the concentration is. The concentration is too high, not only causes manufacturing cost to increase, produces leveling liquid spot defect easily moreover, and the concentration is low excessively, does not play the lubrication action, causes to level the energy consumption height, still causes the big a large amount of iron powder that produce of leveling process friction to the product of moving back to drop moreover and piles up, causes the roll mark defect. The traditional method is to take the leveling liquid by a sugar degree meter, manually detect the sugar degree of the leveling liquid, convert the sugar degree into the concentration of the leveling liquid and manually prepare the concentration of the leveling liquid. The method is manually operated, and cannot realize automatic control of the concentration of the leveling liquid.
Chinese patent CN201010213754.7 discloses a leveling liquid concentration control system and method, which uses a leveling liquid concentration detector to realize automatic control of the leveling liquid concentration, and configures different leveling liquids according to different environmental temperatures and humidities. However, in practical industrial application, there is no reliable leveler concentration detector, so the existing continuous annealing unit and hot galvanizing unit are rarely exchanged or reported to be equipped with leveler concentration detectors in leveler systems.
Chinese patent CN201611105868.3 discloses a step-by-step concentration liquid-dispensing system and a liquid-dispensing method, which creatively uses two liquid-dispensing boxes to switch between a liquid-dispensing mode and a liquid-dispensing mode, and dispenses liquid in a non-liquid-dispensing box, so as to improve the control precision of the concentration of the leveling liquid, but the method also uses a leveling liquid concentration detector to control the concentration. Like the above patent, my department has been unable to purchase a reliable leveler concentration detector on the market, causing that the automation of the existing unit is modified and is unable to be implemented by similar methods.
In addition, in the traditional continuous annealing unit and the hot galvanizing unit, the leveling liquid is not recycled, but is discharged to a sewage treatment unit for sewage treatment after being used once, so that the consumption of the leveling liquid and desalted water is large, and the sewage treatment cost is high. In addition, can cause belted steel easy corrosion when leveling liquid chloride ion concentration superscript, current leveling liquid uses the management and control also to rely on artifical sample presentation to go to detect chloride ion concentration, can't realize automatic operation. In addition, the contents of bacteria and mould in each tank of the leveling liquid exceed the standard, the bacteria and mould are gathered together, the nozzle of the leveling liquid is blocked, and the like, and the leveling liquid is judged by manual visual inspection, so that no humanization can be realized.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art and realizing unmanned leveling liquid concentration control, the invention provides an automatic leveling liquid concentration control method, which solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a method for automatically controlling the concentration of a leveling liquid comprises a leveling liquid system, wherein the leveling liquid system comprises a leveling liquid stock solution tank, a leveling liquid mixing tank, a leveling liquid stock solution pump, a leveling liquid stock solution flowmeter, a desalted water electromagnetic valve, a desalted water flowmeter, a stirring pump and a leveling liquid concentration controller, a stirrer, an online leveling liquid conductivity meter and a liquid level meter are arranged in the leveling liquid mixing tank, leveling liquids with different concentrations are prepared in a laboratory by using the leveling liquid stock solution and desalted water used by a machine set, the conductivities of the leveling liquids with different concentrations are measured, the conductivity control range and the target conductivity value of the used leveling liquid are calculated according to the leveling liquid concentration control requirement, and the ratio of the leveling liquid stock solution and the desalted water required by the leveling liquids with different conductivities is obtained, when the liquid level in the leveling liquid mixing tank is lower than the target liquid level, the leveling liquid concentration controller is used according to the actual measurement result of the online conductivity, The flattening solution mixing tank actual liquid level, flattening solution target liquid level calculate need to the flattening solution stoste volume and the desalination water yield that the flattening solution mixing tank added, draw from the flattening solution stoste tank through flattening solution stoste pump and calculate required amount's flattening solution and add to the flattening solution mixing tank, add the desalination water of calculating required amount in to the flattening solution mixing tank through opening the desalination solenoid valve simultaneously, adjust the concentration of flattening solution in the flattening solution mixing tank, flattening solution concentration controller control agitator pump start-up agitator stirs the flattening solution in the flattening solution mixing tank always during the work.
Preferably, in addition to the condition that the liquid level in the leveling liquid mixing tank is lower than the target liquid level to trigger leveling liquid preparation, automatic leveling liquid preparation is also triggered when the measured result of the conductivity of the leveling liquid is lower than a preset lower conductivity limit or higher than a preset upper conductivity limit.
Preferably, the leveling liquid concentration controller has a time accumulation counting function, the leveling liquid conductivity meter has an actual measurement result lower than a preset lower conductivity limit or higher than a preset upper conductivity limit to trigger time accumulation counting, when the continuous accumulation time reaches a preset time threshold, leveling liquid automatic liquid preparation is triggered, if the conductivity does not reach the preset time threshold, the conductivity is recovered to be above the preset lower conductivity limit or below the preset upper conductivity limit, the time accumulation counting is automatically cleared, the conductivity result to be measured exceeds a preset range to be counted again, and accidental abnormal conductivity values are prevented from triggering leveling liquid automatic liquid preparation.
Preferably, the level and smooth liquid recovery tank is still additionally arranged in the level and smooth liquid system, the level and smooth liquid purification tank is recovered to the level and smooth liquid recovery tank, then the level and smooth liquid in the level and smooth liquid recovery tank is extracted, purification treatment is carried out through a coarse filter, a magnetic filter, a centrifugal pump purification device and a microfiltration device, then the recovered level and smooth liquid is concentrated in the level and smooth liquid purification tank, a liquid level meter is arranged in the level and smooth liquid purification tank, when the liquid level of the purification tank exceeds the preset liquid level, the level and smooth liquid mixing tank is changed from the level and smooth liquid of the level and smooth liquid raw liquid tank to the level and smooth liquid of the required conductivity, which is extracted, recycled, from the level and smooth liquid purification tank and the level and smooth liquid of the required conductivity is gradually configured through the raw liquid fractional feedback control of the level and smooth liquid raw liquid tank.
Preferably, the conductivity meter is also arranged in the leveling liquid purification tank, and when the leveling liquid mixing tank is used for preparing the leveling liquid with the required conductivity, the leveling liquid amount in the leveling liquid purification tank required to be extracted for preparing the target liquid level leveling liquid and the leveling liquid raw liquid amount required to be supplemented are directly calculated according to the conductivity of the leveling liquid in the purification tank, so that the leveling liquid is prepared in place at one time, and the leveling liquid is not required to be gradually prepared by feedback in multiple times.
Preferably, the leveling liquid system is also provided with an online automatic chlorine ion sampling and detecting device, the leveling liquid mixing tank is provided with an electromagnetic discharge valve, the online automatic chlorine ion sampling and detecting device periodically takes the leveling liquid from the leveling liquid mixing tank to perform automatic detection, and when the chlorine ions in the leveling liquid mixing tank exceed the standard, the leveling liquid concentration controller determines to open electromagnetic discharge according to the chlorine ion concentration value to discharge a certain amount of the leveling liquid in the leveling liquid mixing tank and then prepare the liquid again.
Preferably, the leveling liquid recovery tank and the leveling liquid purification tank are also provided with electromagnetic discharge valves, the online automatic chlorine ion sampling and detecting device also periodically takes the leveling liquid from the leveling liquid recovery tank and the leveling liquid purification tank to detect the chlorine ion concentration, and when the chlorine ion concentration value in the leveling liquid recovery tank and the leveling liquid purification tank exceeds the control standard, the leveling liquid concentration controller opens the electromagnetic discharge valves of the leveling liquid recovery tank and the leveling liquid purification tank to empty the leveling liquid in the leveling liquid recovery tank and the leveling liquid purification tank.
Preferably, the temperature gauges and the electric heaters are arranged in the leveling liquid mixing tank, the leveling liquid raw liquid tank, the leveling liquid recovery tank and the leveling liquid purification tank respectively, the leveling liquid concentration controller adjusts the power of the electric heaters according to the temperature measurement result of the temperature gauges, and the temperature of the leveling liquid in the leveling liquid mixing tank, the leveling liquid raw liquid tank, the leveling liquid recovery tank and the leveling liquid purification tank is controlled within a target temperature range.
Preferably, set up the camera leveling each groove jar of liquid to being equipped with vision automatic identification system, reporting to the police when leveling liquid bacterium, mould content and exceeding standard, so that in time arrange to clean the groove jar, avoid taking place to level liquid nozzle jam scheduling problem.
Preferably, the leveling liquid mixing tank is further provided with an automatic leveling liquid additive adding system, and the leveling liquid additive is added according to the leveling liquid adding amount of the leveling liquid purifying tank in proportion so as to improve the using effect of the leveling liquid.
(III) advantageous effects
The invention provides a method for automatically controlling the concentration of a leveling liquid, which has the following beneficial effects:
(1) the invention can realize the automatic control of the concentration of the leveling liquid without a leveling liquid concentration detector.
(2) The method does not depend on manual sampling and sample sending to measure the concentration of the chloride ions in the leveling liquid, realizes automatic detection of the concentration of the chloride ions, and automatically adjusts the over-standard concentration of the chloride ions.
(3) The invention realizes the online recycling of the leveling liquid and reduces the consumption of the leveling liquid and desalted water.
(4) The invention realizes the unmanned control of the concentration of the leveling liquid and the over standard control of the concentration of the chloride ions.
(5) The invention realizes the automatic identification of bacteria and mould in each tank of the leveling liquid without arranging manual work to check on site regularly.
(6) The automatic control of the temperature of the leveling liquid is realized.
(7) The invention realizes the automatic addition of the leveling liquid additive when the leveling liquid is recycled. Finally, the filling of the stock solution of the leveling liquid and the treatment of the standard exceeding of chloride ions in the stock solution of the leveling liquid are eliminated, and the unmanned operation control is realized.
Drawings
FIG. 1 is a schematic view of an automatic leveling liquid concentration control system according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of an automatic control system for the concentration of a leveling liquid according to embodiment 2 of the present invention;
FIG. 3 is a schematic view of an automatic leveling liquid concentration control system according to embodiment 3 of the present invention.
In the figure: 11. a leveling liquid stock solution tank; 12. a leveling liquid mixing tank; 13. leveling a liquid conductivity meter; 14. a leveling liquid stock pump; 15. leveling a front hand valve of a stock solution pump; 16. a leveling liquid stock solution standby pump; 17. leveling stock solution and spare pump front hand valve; 18. leveling the stock solution flow meter; 19. a desalted water replenishing electromagnetic valve; 20. a leveling liquid concentration controller; 21. a liquid level meter; 22. a stirring pump; 23. a stirrer; 24. a desalted water flow meter; 25. a leveling liquid mixing tank electromagnetic discharge valve; 31. a leveling liquid feed pump; 32. leveling the liquid flow meter; 33. a leveling liquid supply pump front hand valve; 34. a leveling liquid supply standby pump; 35. a leveling liquid supply standby pump front hand valve; 41. a leveling liquid recovery tank; 42. a leveling liquid recovery tank liquid level meter; 43. a conductivity meter of the leveling liquid recovery tank; 44. an electromagnetic discharge valve of the leveling liquid recovery tank; 45. a leveling liquid recovery tank pump; 46. a flattening liquid recovery tank pump front hand valve; 47. a leveling liquid recovery tank standby pump; 48. a hand valve in front of a standby pump of a leveling liquid recovery tank; 51. a leveling liquid rough filtering device; 52. a flattening liquid electromagnetic filtration device; 53. a flattening liquid fine filtering device; 54. a leveling liquid purification tank; 55. a leveling liquid purifying tank liquid level meter; 56. a leveling liquid purification tank conductivity meter; 57. an electromagnetic discharge valve of a leveling liquid purifying tank; 58. a leveling liquid purification tank supplies leveling liquid to the metering pump; 59. the leveling liquid is supplied to a front hand valve of a metering pump by a leveling liquid purification tank; 60. a leveling liquid purification tank supplies leveling liquid to a standby metering pump; 61. the leveling liquid purification tank supplies leveling liquid to a front hand valve of a standby metering pump; 71. a Y-type filter; 72. a centrifugal pump purification device; 73. a smoothing liquid microfiltration device; 81. a leveling liquid recovery tank camera; 82. a leveling liquid purification tank camera; 83. a leveling liquid mixing tank camera; 84. a leveling liquid stock solution tank camera; 91. a leveling liquid chloride ion automatic detection device; 92. an electric heater; 93. a thermometer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The leveling liquid system of the continuous annealing unit comprises a leveling liquid stock solution tank 11, a leveling liquid mixing tank 12, a leveling liquid stock solution pump 14, a leveling liquid stock solution flowmeter 18, a desalted water replenishing electromagnetic valve 19, a desalted water flowmeter 24, a stirring pump 22 and a leveling liquid concentration controller 20, wherein a stirrer 23, an online leveling liquid conductivity meter 13 and a liquid level meter 21 are arranged in the leveling liquid mixing tank 12, the stirrer 23 is driven by the stirring pump 22 to realize uniform mixing of the leveling liquid in the leveling liquid mixing tank 12, and the leveling liquid is extracted from the leveling liquid mixing tank 12 by the leveling liquid supply pump 31 or a leveling liquid supply standby pump 34 and supplied to the leveling machine, as shown in fig. 1. In the debugging stage, ten leveling liquids with different concentrations, namely 1%, 2%, 3%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5% and 7%, are prepared in a laboratory by using a leveling liquid stock solution and desalted water used by a unit, the conductivity of the leveling liquids with different concentrations is measured, the result is shown in table 1, the concentration of the leveling liquid is controlled to be 5 +/-1% according to the actual production requirement of the leveling liquid, the conductivity control range of the used leveling liquid is calculated to be 1540-1965 mus/cm according to the concentration control requirement of the leveling liquid, the target conductivity value is 1676 mus/cm, the ratio of the leveling liquid stock solution and the desalted water required by preparing the leveling liquid with different conductivities into the target concentration according to the numerical value in table 1 by adopting an interpolation method, and when the liquid level in a leveling liquid mixing tank is lower than the target liquid level (30% in the embodiment), the leveling liquid concentration controller 20 actually measures the conductivity of the leveling liquid according to the results of 13, 2%, 3%, 4%, 4.5%, 5%, 6%, 7% and 7% of the leveling liquid, The actual liquid level of the leveling liquid mixing tank 12 and the target level of the leveling liquid (80% in this embodiment) calculate the amount of the leveling liquid stock solution and the amount of desalted water to be added to the leveling liquid mixing tank 12, the leveling liquid stock solution pump 14 extracts the required amount of leveling liquid to be added to the leveling liquid mixing tank 12 from the leveling liquid stock solution tank 11, and the desalted water to be added to the leveling liquid mixing tank 12 by opening the desalted water replenishing solenoid valve 19, so that the concentration of the leveling liquid in the leveling liquid mixing tank 12 is adjusted to the target concentration. The leveling liquid concentration controller 20 controls the stirring pump 22 to drive the stirrer 23 to stir the leveling liquid in the leveling liquid mixing tank all the time during the leveling liquid use work period, so that the leveling liquid is uniformly mixed. In the embodiment, the concentration controller 20 of the leveling liquid has a time accumulation counting function, when the result of the measured leveling liquid conductivity of the leveling liquid conductivity meter 13 is lower than the preset lower conductivity limit 1540+20 mus/cm or higher than the preset upper conductivity limit 1965-20 mus/cm, the time accumulation counting is triggered first, when the continuous accumulated time reaches a preset time threshold (10 seconds in the embodiment), the automatic leveling liquid preparation is triggered, if the conductivity does not reach the preset time threshold value, the conductivity is recovered to be between 1540+ 20-1965-20 mus/cm of the preset upper and lower conductivity limits, and automatically resetting the time accumulated count, and counting again when the conductivity result to be actually measured exceeds the preset range (1540 + 20-1965-20 mus/cm), so as to prevent accidental conductivity abnormal values from triggering automatic leveling liquid preparation. The embodiment realizes automatic control of the concentration of the leveling liquid and unmanned control of the concentration of the leveling liquid. In practical implementation, all the key pumps are used and prepared, and hand valves are arranged in front of the pumps, which belongs to the conventional practice in the field and is not described again.
Example 1 leveling solutions with different concentrations of leveling solution corresponding conductivity
Example 2
Another continuous annealing line used the same leveling solution as in example 1, and the leveling solution system was equipped with a leveling solution recovery tank 41, a leveling solution purification tank 54, a leveling solution rough filtration device 51, a leveling solution electromagnetic filtration device 52 and a leveling solution fine filtration device 53 in addition to the devices related to example 1, and the leveled leveling solution naturally flowed into the leveling solution recovery tank 41 by gravity, as shown in FIG. 2. It should be noted that, for the sake of better clarity, the control connection lines between the automatic control-related devices such as the added pumps, solenoid valves, level meters, conductivity meters, etc. and the leveling liquid concentration controller 20 are not shown, and will not affect the understanding of those skilled in the art. In this embodiment, when the liquid level reaches the target liquid level (80% is taken in this embodiment), the leveling liquid recovered from the leveling liquid recovery tank 41 is extracted by the leveling liquid recovery tank pump 45 or the leveling liquid recovery tank backup pump 47, purified by the leveling liquid rough filtering device 51, the leveling liquid electromagnetic filtering device 52 and the leveling liquid fine filtering device 53, and then collected into the leveling liquid purification tank 54, when the liquid level in the leveling liquid recovery tank 41 is lower than 30%, the leveling liquid recovery tank pump 45 or the leveling liquid recovery tank backup pump 47 stops working, and when the liquid level reaches the target liquid level (80% is taken in this embodiment), the next working is resumed. In this embodiment, the leveling liquid recovery tank 41 is equipped with a leveling liquid recovery tank level meter 42 and a leveling liquid recovery tank conductivity meter 43, and detects the leveling liquid level and the conductivity in the leveling liquid recovery tank 41 in real time. The surface liquid purification tank 54 is provided therein with a surface liquid purification tank level meter 55 and a surface liquid purification tank conductivity meter 56, and detects the surface liquid level and the conductivity in the surface liquid purification tank 54 in real time. The leveling liquid rough filtering device 51 of this embodiment is specifically a paper tape filter, and the leveling liquid can filter out thick solid particles after being filtered by the paper tape filter, and fine iron powder in the leveling liquid is filtered out by the leveling liquid electromagnetic filtering device 52, and finally, the fine particles of micron level are filtered out by the leveling liquid fine filtering device 53, so that the purification of the leveling liquid is realized. In this embodiment, when the liquid level of the leveling liquid purifying tank 54 reaches more than 50% and the liquid level of the leveling liquid mixing tank 12 is lower than 30% or the conductivity of the leveling liquid in the leveling liquid mixing tank 12 is lower than 1540+20 μ s/cm, the leveling liquid concentration controller 20 changes the leveling liquid, which is required by the leveling liquid raw liquid preparation configuration and is extracted from the leveling liquid raw liquid tank 11 in the original leveling liquid mixing tank 12, into the leveling liquid, which is required by the leveling liquid purification tank leveling liquid supply metering pump 58 or the leveling liquid purification tank leveling liquid supply backup metering pump 60, and extracts the leveling liquid, which is required by calculation (loss in use and low actual concentration), from the leveling liquid raw liquid tank 54, and supplements the leveling liquid raw liquid, which is required by calculation of the target level of the leveling raw liquid preparation (80% in this embodiment) from the leveling liquid raw liquid tank 11, and prepares the leveling liquid with the target conductivity of the leveling liquid mixing tank 12 of 1676 μ s/cm at one time, the specific calculation principle is not the main point of attention of the patent and is not repeated. The leveling liquid purification tank 54 in this embodiment is configured to have a large capacity, and there is no fear of an excessive amount of leveling liquid being recovered, and of course, the leveling liquid purification tank 54 is also configured to have an overflow pipe, and in case of an excessive amount of leveling liquid being recovered, the leveling liquid directly overflows into a waste water pit. In practical application, an automatic leveling liquid additive adding system (not shown in fig. 2) is further disposed at the leveling liquid mixing tank 12, and the leveling liquid additive is added in proportion according to the addition amount of the leveling liquid in the leveling liquid purifying tank 54, so as to further improve the use effect of the leveling liquid.
Example 3
A leveling liquid system of a strip steel continuous hot dip galvanizing pure zinc machine set is shown in figure 3, and also for the purpose of clearer drawing, a control connection line between equipment related to automatic control, such as a newly added pump, an electromagnetic valve, a liquid level meter, a conductivity meter and the like, and a leveling liquid concentration controller 20 is not shown schematically, recycled leveling liquid firstly filters out solid particles such as zinc skins and the like primarily through a Y-shaped filter 71, then a centrifugal pump purifying device 72 is used for further purifying the leveling liquid, and finally a leveling liquid micro-filtering device 73 with an automatic back washing function is used for final purification, and then the leveling liquid is collected into a leveling liquid purifying tank 54. In this embodiment, another leveling liquid is used as the leveling liquid, the control concentration of the leveling liquid required for production is 3.5 ± 1%, the method and the principle for measuring the conductivity during debugging are the same as those in embodiment 1, and the system working principle is also the same as that in embodiment 2, which is not described again. This embodiment, still set up at level and smooth liquid accumulator 41 department and smooth liquid accumulator camera 81, it purifies the tank camera 82 to set up at level and smooth liquid in the liquid purification tank 54 department, it sets up level and smooth liquid mixing tank camera 83 to set up at level and smooth liquid mixing tank 12 department, it sets up level and smooth liquid stoste tank camera 84 to set up at level and smooth liquid stoste tank 11 department, each camera is from taking the illumination, make a video recording and shoot each inslot liquid level and cell wall, and be equipped with the automatic identification system of vision to the bacterium on level and the cell wall of level and smooth liquid, mould reunion carries out automatic identification, report to the police when level and smooth liquid bacterium, mould content exceeds standard, so that in time arrange to clean the tank, avoid taking place to level liquid nozzle blocking scheduling problem, realize level and smooth liquid bacterium, mould discernment is unmanned. In addition, this embodiment is equipped with leveling liquid chloride ion automatic checkout device 91, and this leveling liquid chloride ion automatic checkout device 91 is automatic periodically to extract the leveling liquid from leveling liquid stoste groove 11, leveling liquid mixing tank 12, leveling liquid recovery tank 41 and leveling liquid purification tank 54 and carry out the chloride ion analysis, and its technical details need be paid attention to the leveling liquid discharge in the sample pipeline and then the liquid is got and is analyzed, avoids the analysis result distortion. When the chloride ions in the leveling liquid mixing tank 12 exceed the standard (the control standard of the embodiment is >20 ppm), the leveling liquid concentration controller 20 determines to open the electromagnetic drain valve 25 of the leveling liquid mixing tank according to the chloride ion concentration value to drain a certain amount of the leveling liquid in the leveling liquid mixing tank, and then prepares the liquid again. When the chlorine ion concentration value in the flattening solution recovery tank 41 exceeds the control standard (20 ppm in this embodiment), the flattening solution concentration controller 20 opens the flattening solution recovery tank electromagnetic discharge valve 44 to empty the flattening solution in the flattening solution recovery tank. When the value of the chloride ion concentration in the leveler purification tank 54 exceeds the control standard (> 20ppm in this example), the leveler concentration controller 20 opens the electromagnetic drain valve 57 of the leveler purification tank to drain the leveler in the leveler purification tank 54. The discharged leveling liquid flows into a waste water pit and is uniformly sent to a sewage treatment workshop for harmless treatment. However, when the concentration value of the chloride ions in the stock solution tank 11 of the leveling solution exceeds the control standard (more than or equal to 10ppm in the embodiment), the chloride ions cannot be directly discharged, and a system alarm is carried out, so that the operators of the unit contact the leveling solution manufacturer for diagnosis and treatment. In this embodiment, an electric heater 92 and a thermometer 93 are further disposed in the leveling liquid mixing tank 12, and the leveling liquid concentration controller also has an automatic temperature control function, so as to automatically control the leveling liquid in the leveling liquid mixing tank 12 according to a target temperature (45 ± 2 ℃) to improve the use effect of the leveling liquid.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for automatically controlling the concentration of a leveling liquid comprises a leveling liquid system and is characterized in that: the leveling liquid system comprises a leveling liquid stock solution tank, a leveling liquid mixing tank, a leveling liquid stock solution pump, a leveling liquid stock solution flowmeter, a desalted water solenoid valve, a desalted water flowmeter, a stirring pump and a leveling liquid concentration controller, wherein the leveling liquid mixing tank is internally provided with the stirrer, an online leveling liquid conductivity meter and a liquid level meter, leveling liquids with different concentrations are prepared in a laboratory by using the leveling liquid stock solution and desalted water used by a machine set, the conductivities of the leveling liquids with different concentrations are measured, the conductivity control range and the target conductivity value of the used leveling liquid are calculated according to the leveling liquid concentration control requirement, the ratio of the leveling liquid stock solution and the desalted water required by the leveling liquids with different conductivities is obtained, and when the liquid level in the leveling liquid mixing tank is lower than the target liquid level, the leveling liquid concentration controller calculates the leveling liquid stock solution amount and the desalted water amount required to be added into the leveling liquid mixing tank according to the online conductivity actual liquid level and the target liquid level of the leveling liquid mixing tank, the required amount of leveling liquid is extracted from the leveling liquid stock solution tank through the leveling liquid stock solution pump and added into the leveling liquid mixing tank, the required amount of desalted water is added into the leveling liquid mixing tank by opening a desalted water electromagnetic valve, the concentration of the leveling liquid in the leveling liquid mixing tank is adjusted, and the leveling liquid concentration controller controls the stirring pump to start the stirrer to stir the leveling liquid in the leveling liquid mixing tank all the time during work.
2. The automatic leveling liquid concentration control method according to claim 1, wherein: except that the liquid level in the leveling liquid mixing tank is lower than the target liquid level to trigger leveling liquid preparation, when the measured result of the conductivity of the leveling liquid is lower than the preset lower conductivity limit or higher than the preset upper conductivity limit, the leveling liquid is also triggered to automatically prepare the leveling liquid.
3. The automatic leveling liquid concentration control method according to claim 2, characterized in that: the leveling liquid concentration controller has a time accumulation counting function, the actual measurement result of the leveling liquid conductivity meter is lower than a preset lower conductivity limit or higher than a preset upper conductivity limit, time accumulation counting is triggered firstly, automatic leveling liquid preparation is triggered when the continuous accumulation time reaches a preset time threshold, if the conductivity does not reach the preset time threshold, the conductivity is recovered to be above the preset lower conductivity limit or below the preset upper conductivity limit, the time accumulation counting is automatically cleared, the actual measurement result of the conductivity exceeds a preset range and is then counted again, and accidental abnormal conductivity values are prevented from triggering automatic leveling liquid preparation.
4. The automatic leveling liquid concentration control method according to claim 3, wherein: level liquid system has still increased and has leveled the liquid accumulator, level liquid purifies the groove, level the liquid accumulator to be retrieved, then extract the level liquid in the level liquid accumulator, through coarse filter, magnetic filter, centrifugal pump purifier and microfiltration device carry out purification treatment, then concentrate the level liquid that retrieves to level the liquid accumulator, level the liquid level gauge of disposing in the liquid accumulator, when purifying the groove liquid level and surpassing predetermined liquid level, level the liquid mixing tank and extract the required conductivity's of stoste configuration by level the stoste groove and level the liquid that level liquid purified the groove and extract recycle's the leveling liquid of leveling liquid + the stoste groove and draw the leveling liquid of required conductivity from leveling liquid purification groove and gradually dispose the leveling liquid of required conductivity from leveling liquid purification groove.
5. The automatic leveling liquid concentration control method according to claim 4, wherein: the leveling liquid purification tank is also provided with a conductivity meter, when the leveling liquid mixing tank is used for preparing the leveling liquid with the required conductivity, the leveling liquid amount in the leveling liquid purification tank required to be extracted for preparing the target liquid level leveling liquid and the leveling liquid stock solution amount required to be supplemented are directly calculated according to the conductivity of the leveling liquid in the purification tank, and the leveling liquid is prepared in place at one time without being fed back step by step.
6. The automatic leveling liquid concentration control method according to claim 5, wherein: the leveling liquid system is also provided with an online automatic chlorine ion sampling and detecting device, the leveling liquid mixing tank is provided with an electromagnetic discharge valve, the online automatic chlorine ion sampling and detecting device periodically takes the leveling liquid from the leveling liquid mixing tank to perform automatic detection, and when the chlorine ions in the leveling liquid mixing tank exceed the standard, the leveling liquid concentration controller determines to open electromagnetic discharge according to the chlorine ion concentration value to discharge a certain amount of the leveling liquid in the leveling liquid mixing tank and then prepare the liquid again.
7. The automatic leveling liquid concentration control method according to claim 6, wherein: the leveling liquid recovery tank and the leveling liquid purification tank are also provided with electromagnetic discharge valves, the online automatic chlorine ion sampling and detecting device also periodically takes the leveling liquid to detect the chlorine ion concentration from the leveling liquid recovery tank and the leveling liquid purification tank, and when the chlorine ion concentration value in the leveling liquid recovery tank and the leveling liquid purification tank exceeds the control standard, the leveling liquid concentration controller opens the electromagnetic discharge valves of the leveling liquid recovery tank and the leveling liquid purification tank to empty the leveling liquid in the leveling liquid recovery tank and the leveling liquid purification tank.
8. The automatic leveling liquid concentration control method according to claim 7, wherein: the temperature measuring device is characterized in that the leveling liquid mixing tank, the leveling liquid stock solution tank, the leveling liquid recovery tank and the leveling liquid purification tank are respectively provided with a thermometer and an electric heater, the leveling liquid concentration controller adjusts the power of the electric heater according to the temperature measuring result of the thermometer, and the temperature of the leveling liquid in the leveling liquid mixing tank, the leveling liquid stock solution tank, the leveling liquid recovery tank and the leveling liquid purification tank is controlled within a target temperature range.
9. The automatic leveling liquid concentration control method according to claim 8, wherein: set up the camera at each groove jar of level liquid to being equipped with vision automatic identification system, reporting to the police when level liquid bacterium, mould content surpass standard, so that in time arrange to clean the groove jar, avoid taking place to level liquid nozzle and block up the scheduling problem.
10. The automatic leveling liquid concentration control method according to claim 9, wherein: the flattening liquid mixing tank is also provided with an automatic flattening liquid additive adding system, and the flattening liquid additive is added in proportion according to the flattening liquid addition amount of the flattening liquid purifying tank so as to improve the using effect of the flattening liquid.
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