CN110314955A - A kind of method and system of the Aluminum-Extruding Die alkali cleaning and waste liquid comprehensive reutilization - Google Patents
A kind of method and system of the Aluminum-Extruding Die alkali cleaning and waste liquid comprehensive reutilization Download PDFInfo
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- CN110314955A CN110314955A CN201910528129.2A CN201910528129A CN110314955A CN 110314955 A CN110314955 A CN 110314955A CN 201910528129 A CN201910528129 A CN 201910528129A CN 110314955 A CN110314955 A CN 110314955A
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- storage tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/06—Cleaning dies, ducts, containers or mandrels
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Metallurgy (AREA)
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- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses the Aluminum-Extruding Die alkali cleaning and the methods of waste liquid comprehensive reutilization, caustic scrubbing step: the lye for preparing kettle is passed through alkali liquor storage tank, mold to be processed is placed in alkali cleaning treatment box, it is passed through lye, cleaning completes lye and is reversely passed through alkali liquor storage tank, first water storage tank is passed through clear water, cleaning completes clear water and is reversely passed through the first water storage tank, second water storage tank is passed through clear water, cleaning completes clear water and is reversely passed through the second water storage tank, until aluminium ion concentration reaches the upper limit and becomes spent lye the spent lye of alkali liquor storage tank is then passed through crystallization kettle in alkali liquor storage tank, it is separated by solid-liquid separation, solid enters centrifugation or filtering equipment is collected, liquid enters preparation kettle, continue to configure, first water storage tank to prepare kettle moisturizing, second water storage tank is to the first water storage tank moisturizing, water source is to the second water storage tank moisturizing, the lye for preparing kettle is passed through alkali liquor storage tank, repeat above-mentioned steps.In the whole process, only reaction generates sodium metaaluminate, does not generate aluminium hydroxide, it is not easy to block pipeline, and system can start and stop at any time.
Description
Technical field
The present invention relates to the Aluminum-Extruding Die alkali cleaning field more particularly to a kind of the Aluminum-Extruding Die alkali cleaning and waste liquid synthetical recoveries
The method and system utilized.
Background technique
China's aluminium yield is big, wherein aluminium extruded section accounting more than half, reach more than 2,000 ten thousand tons/year.
Aluminium extrusion is processed using mold, completes the mold meeting residual aluminum of aluminium extrusion, and mold needs a residual aluminum before reusing
Removal avoids the effect for influencing to reuse.
In the prior art, the method for processing are as follows: mold to be processed is placed in lye, heating removal residual aluminum, then
It reuses clear water and cleans mold.A large amount of exhaust gas, discarded solid-liquid etc., and the place of the prior art can be generated in this process
Reason method alkali cleaning low efficiency, alkali consumption are big, need by the aluminum ions spent lye that is mixed with of alkali cleaning by multiple purifying environmental protection etc.
Mode is handled, and ability safety dumping is into environment, but the enterprise of thumping majority and the ability for not having overall safety discharge, is caused
Environmental pollution is serious.
Therefore those skilled in the art are badly in need of researching and developing some applicabilities extensively and are able to achieve the technology of environment protection emission, so that substitution is existing
There is the defect of technology.
Summary of the invention
The present invention provides a kind of the Aluminum-Extruding Die alkali cleaning and the method and system of waste liquid comprehensive reutilization, by that can hold
Continuous processing method, resolves into sodium metaaluminate and lye for alkali-washing waste liquid, realizes that the recycling of material and lye recycle.
The method of a kind of the Aluminum-Extruding Die alkali cleaning provided by the invention and waste liquid comprehensive reutilization, the step including alkali cleaning
It is rapid:
A1, piece alkali and water are put into preparation kettle, lye obtained is passed through alkali liquor storage tank, spare；
A2, mold to be processed is placed in alkali cleaning treatment box, alkali liquor storage tank is passed through lye to alkali cleaning treatment box, cleans mould
Tool, after the completion of cleaning, the lye of alkali cleaning treatment box is reversely passed through alkali liquor storage tank, dries alkali cleaning treatment box, and to connecting line into
Row reverse blow；
A3, the first water storage tank are passed through clear water to alkali cleaning treatment box, and after the completion of cleaning, the clear water of alkali cleaning treatment box is reversely passed through
First water storage tank dries alkali cleaning treatment box, and carries out reverse blow to connecting line；
A4, the second water storage tank are passed through clear water to alkali cleaning treatment box, and after the completion of cleaning, the clear water of alkali cleaning treatment box is reversely passed through
Second water storage tank dries alkali cleaning treatment box, and carries out reverse blow to connecting line；
After A5, alkali cleaning treatment box replace mold to be processed, step A1 to A4 repetitive operation, the first water storage tank is to lye at this time
Storage tank moisturizing, the second water storage tank are to the first water storage tank moisturizing, water source to the second water storage tank moisturizing, until the alkali liquor storage tank of step A2
Middle aluminium ion concentration, which reaches the upper limit and becomes spent lye, then carries out step A6-A8；
A6, alkali liquor storage tank spent lye be passed through crystallization kettle and be evaporated crystallisation by cooling；
The crystal that A7, crystallization kettle solid-liquid mix enters centrifugation or filtering equipment is separated by solid-liquid separation, solid collection, liquid
It is passed through preparation kettle；
A8, crystallization kettle separation liquid enter preparation kettle, put into piece alkali, the first water storage tank is to preparing kettle moisturizing, the second water
Storage tank prepares lye made from kettle and is passed through alkali liquor storage tank to the first water storage tank moisturizing, water source to the second water storage tank moisturizing, repeat into
Row above-mentioned steps.
Preferably, further include the steps that energy exchange:
It prepares the heat that kettle and alkali cleaning treatment box generate during the work time and reaches heat exchanger, energy saves after heat exchange
Energy is discharged or provided back to crystallization kettle in heating and energy-storage system, and by heating and energy-storage system control heat exchanger.
Preferably, further include the steps that exhaust-gas treatment is discharged:
The exhaust gas that B1, alkali cleaning treatment box generate in alkaline cleaning procedure includes alkali steam, water vapour and hydrogen；
B2, alkali steam is sprayed and is condensed back；
B3, water vapour and hydrogen are discharged in a organized way.
Preferably, the solution quality percent concentration of lye made from the step A1 is 15-50%.
The present invention also provides a kind of the Aluminum-Extruding Die alkali cleaning and the system of waste liquid comprehensive reutilization, including caustic washing system,
Control system；
The caustic washing system, including prepare kettle, alkali cleaning treatment box, crystallization kettle, centrifugation or filtering equipment, the first water storage tank,
Second water storage tank, alkali liquor storage tank and water source；
The preparation kettle passes through with the alkali liquor storage tank, the first water storage tank, crystallization kettle, centrifugation or filtering equipment and water source
Piping connection；
The alkali cleaning treatment box passes through pipe with the alkali liquor storage tank, first water storage tank, second water storage tank respectively
Road connection；
The water source, second water storage tank, first water storage tank, the alkali liquor storage tank pass sequentially through piping connection；
The crystallization kettle passes through piping connection with the alkali liquor storage tank, the centrifugation or filtering equipment；
The control system is connect with each component of the caustic washing system.
It preferably, further include energy system；
The energy system, including heat exchanger and heating and energy-storage system；
The heat exchanger is connect with the preparation kettle, crystallization kettle, alkali cleaning treatment box；
The heating and energy-storage system, connect with heat exchanger；
The control system is connect with each component of the energy system.
It preferably, further include exhaust treatment system,
The exhaust treatment system, including hydrogen detector and packed tower, gas discharging apparatus；
The packed tower is connect with the alkali cleaning treatment box, and indoors, the gas discharges for the hydrogen detector installation
Device exhaust outlet disposed within；
The control system is connect with each component of the exhaust treatment system.
Preferably, the alkali cleaning treatment box is aluminum alloy mould alkali cleaning treatment box, including cabinet, case lid and controller；
Feed inlet, ultrasonic cleaning component, temperature control heating component, liquid level sensor, filter house are provided in the cabinet
Part and discharge port, wherein the feed inlet is connected with the alkali liquor storage tank by pipeline, the ultrasonic cleaning component includes extremely
A few supersonic generator, the temperature control heating component include heater and temperature sensor, the filter element, it is described go out
Material mouth is connect with the recovery channel of the alkali liquor storage tank or the first water storage tank or the second water storage tank respectively；
The case lid includes sprinkler part, air inlet component and exhaust component；
The controller and the ultrasonic cleaning component, the temperature control heating component, the liquid level sensor, the spray
Component, the air inlet component and the exhaust component is drenched to be connected.
Preferably, the ultrasonic cleaning component includes three axis supersonic generators, the three axis supersonic generator packet
Include X-axis supersonic generator, Y-axis supersonic generator and Z axis supersonic generator；
The X-axis supersonic generator includes X-axis moving parts and X-axis supersonic generator；
The Y-axis supersonic generator includes Y-axis moving parts and Y-axis supersonic generator；
The Z axis supersonic generator includes Z axis moving parts and Z axis supersonic generator；
The X-axis supersonic generator, the Y-axis supersonic generator and Z axis supersonic generator position
Direction is mutually perpendicular to two-by-two.
Preferably, air blower is also set up, the air blower is connect with the alkali cleaning treatment box, for carrying out blowback to pipeline
To the alkali liquor storage tank, first water storage tank and the second water storage tank.
The method and system of a kind of the Aluminum-Extruding Die alkali cleaning provided by the invention and waste liquid comprehensive reutilization, use piece alkali
Lye is prepared preparing in kettle with water, alkali liquor storage tank is passed through, mold to be processed is put into alkali cleaning treatment box, and alkali liquor storage tank is to alkali cleaning
Treatment box is passed through lye, and 2Al+2NaOH+2H occurs at this time2O=2NaAlO2+3H2↑ reaction, the liquids recovery of alkali cleaning treatment box is extremely
Alkali liquor storage tank, after the liquid of alkali cleaning treatment box and pipeline all removes completely, the first water storage tank is passed through clear water, and recycling is completed in cleaning
Liquid is to the first water storage tank, and after liquid substance removal in alkali cleaning treatment box and pipeline is clean, the second water storage tank is passed through clear water again,
Withdrawal liquid is to the second water storage tank again after the completion of cleaning, and clean to liquid substance removal in alkali cleaning treatment box and pipeline, taking-up is washed
Clean mold reuses, and alkali cleaning is completed.It controls sodium metaaluminate in whole process not hydrolyze, so that not occurring in system or pole
Small the precipitating of aluminium hydroxide occur, to guarantee that unobstructed, the utensil of pipeline do not generate sediment, system can be shut down at any time, will not
Pipeline is impacted.
Then, the aluminium ion to the sodium metaaluminate of alkali liquor storage tank reaches a certain level, when lye is not suitable for alkali cleaning, then by alkali
The spent lye of liquid storage tank is passed through crystallization kettle, and obtained solid enters centrifugation or filtering equipment, and obtained liquid, which enters, prepares kettle again
Secondary utilization, but the lye amount utilized again is insufficient, the first water storage tank supplements water to preparing kettle at this time, and the second water storage tank is to the first water
Storage tank supplements water, and water source supplements water to the first water storage tank, and adds piece alkali, obtain can alkali cleaning lye, can then carry out at this time
Above-mentioned caustic scrubbing step.In the process, the sodium metaaluminate in lye, which is then crystallized and is press-filtered out, comes, available after collection, lye
It is reusable without wasting, waste is not generated in whole process or the amount of waste of generation is few, the waste liquid after use is without chemistry
Processing, effective protection environment.
Then, a large amount of heat can be generated at work by preparing kettle and alkali cleaning treatment box, thus by heat exchange convert to
Heating and energy-storage system save heat, for using when crystallization kettle crystallization, efficiently use system resource.
Finally, three kinds of gases can be discharged in alkali cleaning treatment box in alkaline cleaning procedure, alkali steam passes through the spray of packed tower and returns
Stream, vapor and hydrogen are discharged in a organized way, and the amounts of hydrogen of system environments is monitored by hydrogen detector, guarantee whole system
The safety of system.
Detailed description of the invention
Fig. 1 is the process signal of the method and system of a kind of the Aluminum-Extruding Die alkali cleaning of the present invention and waste liquid comprehensive reutilization
Figure；
Fig. 2 is the alkali cleaning treatment box signal of the system of a kind of the Aluminum-Extruding Die alkali cleaning of the present invention and waste liquid comprehensive reutilization
Figure.
Solid line with arrow indicates the direction of material and liquid flowing, wherein centrifugation or filtering equipment 8 flow to preparation
The fine line of kettle 1 is independent, the dotted line expression energy shifting with arrow with the heavy line that alkali liquor storage tank 3 flow to crystallization kettle 2
Dynamic direction.
Wherein, it is marked in figure as follows:
Prepare kettle 1, crystallization kettle 2, alkali liquor storage tank 3, the first water storage tank 4, the second water storage tank 5, water source 6, alkali cleaning treatment box 7,
Centrifugation or filtering equipment 8, heating and energy-storage system 9, heat exchanger 10；
71 cabinets, 711 feed inlets, 712 ultrasonic cleaning components, 7121X axis supersonic generator, 7122Y axis ultrasonic wave
Generator, 7123Z axis supersonic generator, 713 temperature control heating components, 714 liquid level sensors, 715 filter elements, 716 dischargings
Mouth, 72 case lids, 721 sprinkler parts, 722 air inlet components, 723 exhaust components.
Specific embodiment
The present invention provides a kind of the Aluminum-Extruding Die alkali cleaning and the method and system of waste liquid comprehensive reutilization, in system
Only reaction generates sodium metaaluminate for lye and reactive aluminum, effectively control, does not generate aluminum hydroxide precipitation, guarantees the unobstructed fortune of system
Make, do not generate pollutant, waste is without repeatedly processing, environmental protection, sustainable development, and generalization is strong.
Below with reference to the attached drawing in the present invention, clear and detailed description is carried out to the technical solution in the present invention, it is clear that
Described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, all other embodiment party obtained by those of ordinary skill in the art without making creative efforts
Formula shall fall within the protection scope of the present invention.
Fig. 1 is the method for a kind of the Aluminum-Extruding Die alkali cleaning of the present invention and waste liquid comprehensive reutilization and is referring to FIG. 1-2,
The flow diagram of system；Fig. 2 is at the alkali cleaning of the system of a kind of the Aluminum-Extruding Die alkali cleaning of the present invention and waste liquid comprehensive reutilization
Manage case schematic diagram.
The method of a kind of the Aluminum-Extruding Die alkali cleaning provided by the invention and waste liquid comprehensive reutilization, the step including alkali cleaning
It is rapid:
A1, piece alkali and water are put into preparation kettle 1, lye obtained is passed through alkali liquor storage tank 3, spare；
A2, mold to be processed is placed in alkali cleaning treatment box 7, alkali liquor storage tank 3 is passed through lye to alkali cleaning treatment box 7, cleaning
Mold, after the completion of cleaning, the lye of alkali cleaning treatment box 7 is reversely passed through alkali liquor storage tank 3, dries alkali cleaning treatment box 7, and to connecting tube
Road carries out reverse blow；
A3, the first water storage tank 4 are passed through clear water to alkali cleaning treatment box 7, and after the completion of cleaning, the clear water of alkali cleaning treatment box 7 is reversed
It is passed through the first water storage tank 4, dries alkali cleaning treatment box 7, and reverse blow is carried out to connecting line；
A4, the second water storage tank 5 are passed through clear water to alkali cleaning treatment box 7, and after the completion of cleaning, the clear water of alkali cleaning treatment box 7 is reversed
It is passed through the second water storage tank 5, dries alkali cleaning treatment box 7, and reverse blow is carried out to connecting line；
After A5, alkali cleaning treatment box 7 replace mold to be processed, step A1 to A4 repetitive operation, the first water storage tank 4 is to alkali at this time
3 moisturizing of liquid storage tank, the second water storage tank 5 are to 4 moisturizing of the first water storage tank, water source 6 to 5 moisturizing of the second water storage tank, up to step A2's
Aluminium ion concentration, which reaches the upper limit and becomes spent lye, in alkali liquor storage tank 3 then carries out step A6-A8；
A6, alkali liquor storage tank 3 spent lye be passed through crystallization kettle 2 and be evaporated crystallisation by cooling；
The crystal that A7,2 solid-liquid of crystallization kettle mix enters centrifugation or filtering equipment 8 is separated by solid-liquid separation, solid collection, liquid
Body, which is passed through, prepares kettle 1；
The isolated liquid of A8, crystallization kettle 2, which enters, prepares kettle 1, puts into piece alkali, and the first water storage tank 4 is to preparing 1 moisturizing of kettle, the
Two water storage tanks 5 prepare lye made from kettle 1 and are passed through lye storage to 4 moisturizing of the first water storage tank, water source 6 to 5 moisturizing of the second water storage tank
Tank 3, repeats above-mentioned steps.
Preferably, further include the steps that energy exchange:
It prepares the heat that kettle 1 and alkali cleaning treatment box 7 generate during the work time and reaches heat exchanger 10, energy after heat exchange
Be stored in heating and energy-storage system 9, and by heating and energy-storage system 9 control heat exchanger 10 back to crystallization kettle 2 discharge or
Energy is provided.
Preferably, further include the steps that exhaust-gas treatment is discharged:
The exhaust gas that B1, alkali cleaning treatment box 7 generate in alkaline cleaning procedure includes alkali steam, water vapour and hydrogen；
B2, alkali steam is sprayed and is condensed back；
B3, water vapour and hydrogen are discharged in a organized way.
Preferably, the solution quality percent concentration of lye made from the step A1 is 15-50%.
Method of the invention is described in detail below by specific embodiment:
It should be noted that the liquid being related to inside present system, by pipeline transportation, the energy being related to passes through route
Transmitting, the electric signal control being related to is by route or wireless connection, their utilization is all conventional means, herein not one by one
It lists.
Each number of components and container size of the application is non-standard de-sign, and quantity and capacity can be carried out according to user demand
Design.
Piece alkali and water are put into kettle 1 is prepared, stirred 5-30 minutes according to the demand of technical process and amount of preparation, with obtained
The lye for being 15-50% to solution quality percent concentration, lye goes to the preservation of alkali liquor storage tank 3 at this time.
The mold that aluminium is left in completion processing is put into alkali cleaning treatment box 7, is closed case lid, and alkali liquor storage tank 3 is handled to alkali cleaning
Case 7 is passed through lye, and alkali cleaning starts, and the components such as ultrasonic wave in alkali cleaning treatment box 7 start simultaneously, and comprehensive alkali is carried out to mold
It washes, following chemical reaction: 2Al+2NaOH+2H occurs in this process2O=2NaAlO2+3H2↑, it consumes corresponding with aluminium quantity
Lye, obtain sodium metaaluminate corresponding with aluminium quantity.When alkali cleaning is completed, the liquid of alkali cleaning treatment box 7, which returns, is passed through alkali liquor storage tank
3, and by the liquid blowback in pipeline into alkali liquor storage tank 3, and dry inside alkali cleaning treatment box 7.
After pipeline and clean alkali cleaning treatment box 7, carry out first wash: the first water storage tank 4 is passed through to alkali cleaning treatment box 7
Clear water, mold first wash start, and the components such as ultrasonic wave start simultaneously in alkali cleaning treatment box 7, carry out to mold comprehensive
Washing, after the completion of first wash, liquid, which returns, is passed through the first water storage tank 4, and by the liquid blowback in pipeline to alkali liquor storage tank 3
In, and dry inside alkali cleaning treatment box 7.
After pipeline and clean alkali cleaning treatment box 7, carry out second wash: the second water storage tank 5 is passed through to alkali cleaning treatment box 7
Clear water, mold second wash start, and the components such as ultrasonic wave start simultaneously in alkali cleaning treatment box 7, carry out to mold comprehensive
Washing, after the completion of second wash, liquid, which returns, is passed through the second water storage tank 5, and by the liquid blowback in pipeline to alkali liquor storage tank 3
In, and dry inside alkali cleaning treatment box 7.
By alkali cleaning, primary washing, secondary washing, mould inside aluminium leaves substance and substantially cleans completion, opens alkali cleaning
Treatment box 7 takes out mold, takes out remaining residual aluminium, and mold meets the standard reused.
After new mold to be processed is placed again into alkali cleaning treatment box 7, repeat the above steps.In alkali cleaning water-washing process,
Liquid can consume, and the first water storage tank 4 provides water, the second water storage tank 5 to alkali liquor storage tank 3 and provides water, water to the first water storage tank 4 at this time
Source 6 provides water to the second water storage tank 5, and the lasting use of contaminated water is effectively ensured, and greatly reduces the usage amount of clear water.
After multiple alkali cleaning, the aluminium composition of alkali liquor storage tank 3 is excessively high, usually Al3+Reach 80g/L, lye is not
When can carry out alkali cleaning again, spent lye can be described as at this time, spent lye is passed through crystallization kettle 2, and by crystallization in 10-72 hours, solid-liquid was mixed
The crystal of conjunction enters centrifugation or filtering equipment 8, and after being separated by solid-liquid separation, solid is collected, and liquid, which enters, prepares kettle 1.
Centrifugation or the centrifugation of filtering equipment 8 or filters pressing solid sodium metaaluminate obtained after separation, are collected；Obtained liquid is passed through
Prepare kettle 1.At this time prepare kettle 1 lye amount it is not up to standard, then add piece alkali and the first water storage tank 4 to prepare kettle 1 provide water, second
Water storage tank 5 provides water to the first water storage tank 4, and water source 6 provides water to the second water storage tank 5, to guarantee the water source of preparation kettle 1.To
After the completion of the lye configuration for preparing kettle 1, it is passed through alkali liquor storage tank 3, prepares alkali cleaning next time.
Centrifugation or filtering equipment are specially centrifugation apparatus or filtering equipment, in practice depending on user demand, centrifugation
The relevant device of the prior art can be used in equipment, filtering equipment.
A large amount of heat can be generated when preparing kettle 1 and the processing of alkali cleaning treatment box 7 in process of production, is received by heat exchanger 10
Collect and be converted to energy, save to heating and energy-storage system 9, heats and energy-storage system 9 is the energy of whole system of the present invention
Source is controlled by it the release of energy.When the running of crystallization kettle 2 needs to absorb heat, heating and 9 heat exchanger of energy-storage system
10 provide heat, and heat exchanger 10 delivers heat to crystallization kettle 2, realizes the transfer of energy.
Heating and energy-storage system 9 can carry out energy offer to other each components, and realize energy by heat exchanger 10
Transfer, such as thermal energy.The energy with heating and energy-storage function in the prior art can be used in heating and energy-storage system of the invention
Amount system.
Reaction in alkali cleaning treatment box 7 can generate alkali steam, water vapour and hydrogen, the exhaust component of alkali cleaning treatment box 7
Connect with packed tower, alkali steam enters spray in packed tower and is condensed back, meet environmental requirement water vapour and hydrogen then into
The organized discharge of row.
Advantage:
Before and after alkali cleaning and in alkaline cleaning procedure, from alkali liquor storage tank 3 to alkali cleaning treatment box 7, lye and the liquid Jing Guo alkali cleaning are
It is stored in a closed independent individual, therefore the sodium metaaluminate generated is very stable, will not be influenced and be given birth to by extraneous or water
At the blocking pipelines such as aluminum hydroxide precipitation/pipeline, it ensure that whole system can shut down machine at any time, prevented the prior art must
The operation requirement of palpus duration booting, is suitble to big small-scale enterprise.System avoids NaAlO2+2H2O=Al (OH)3↓+NaOH's
Occur.
First water storage tank 4 provides water to alkali liquor storage tank 3, and the second water storage tank 5 provides water to the first water storage tank 4, and water source 6 is to the
Two water storage tanks 5 provide water.First water storage tank 4 is the water once washed, and pollution is larger, therefore uses it as water source with alkaline
Liquid, the usage amount that clear water is effectively reduced, reduce water pollution at the cleannes for increasing washing.
Liquid is all returned in alkali cleaning, primary washing and secondary water-washing process and is passed through alkali liquor storage tank 3, the by alkali cleaning treatment box 7
One water storage tank 4, the second water storage tank 5, and blowback pipeline, so that pipeline not residuals, and alkali cleaning treatment box 7 is dried, to protect
Card sodium metaaluminate does not meet water, will not generate aluminum hydroxide precipitation, and the cleanliness of water effectively enhances.
The system of a kind of the Aluminum-Extruding Die alkali cleaning of the invention and waste liquid comprehensive reutilization, including caustic washing system, control
System (not drawn in the figure)；
The caustic washing system, including prepare kettle 1, alkali cleaning treatment box 7, crystallization kettle 2, centrifugation or filtering equipment 8, the storage of the first water
Tank 4, the second water storage tank 5, alkali liquor storage tank 3 and water source 6；
The preparation kettle 1, with the alkali liquor storage tank 3, the first water storage tank 4, crystallization kettle 2, centrifugation or filtering equipment 8 and water source
6 pass through piping connection；
The alkali cleaning treatment box 7 is logical with the alkali liquor storage tank 3, first water storage tank 4, second water storage tank 5 respectively
Cross piping connection；
The water source 6, second water storage tank 5, first water storage tank 4, the alkali liquor storage tank 3 pass sequentially through pipeline company
It connects；
The crystallization kettle 2 passes through piping connection with the alkali liquor storage tank 3, the centrifugation or filtering equipment 8；
The control system is connect with each component of the caustic washing system.
It preferably, further include energy system；
The energy system, including heat exchanger 10 and heating and energy-storage system 9；
The heat exchanger 10 connect with the preparation kettle 1, crystallization kettle 2, alkali cleaning treatment box 7, passes specifically by heat
Pass connection；
The heating and energy-storage system 9, connect with heat exchanger 10；
The control system is connect with each component of the energy system.
It preferably, further include exhaust treatment system (not drawn in the figure),
The exhaust treatment system, including hydrogen detector (not drawn in the figure), with packed tower (not drawn in the figure),
Gas discharging apparatus (not drawn in the figure)；
The packed tower is connect with the alkali cleaning treatment box 7, and indoors, the gas discharges for the hydrogen detector installation
Device exhaust outlet disposed within；
The control system is connect with each component of the exhaust treatment system.
Preferably, the alkali cleaning treatment box 7 is aluminum alloy mould alkali cleaning treatment box 7, including cabinet 71, case lid 72 and control
Device (not drawn in the figure)；
Feed inlet 711, ultrasonic cleaning component 712, temperature control heating component 713, level sensing are provided in the cabinet
Device 714, filter element 715 and discharge port 716, wherein the feed inlet is connected with the alkali liquor storage tank 3 by pipeline, it is described super
It includes at least one supersonic generator that sound wave, which cleans component, and the temperature control heating component includes heater and temperature sensor,
The filter element, the discharge port recovery tube with the alkali liquor storage tank 3 or the first water storage tank 4 or the second water storage tank 5 respectively
Road connection；
The case lid includes sprinkler part 721, air inlet component 722 and exhaust component 723；
The controller and the ultrasonic cleaning component, the temperature control heating component, the liquid level sensor, the spray
Component, the air inlet component and the exhaust component is drenched to be connected.
Preferably, the ultrasonic cleaning component includes three axis supersonic generators, the three axis supersonic generator packet
Include X-axis supersonic generator 7121, Y-axis supersonic generator 7122 and Z axis supersonic generator 7123；
The X-axis supersonic generator includes X-axis moving parts and X-axis supersonic generator；
The Y-axis supersonic generator includes Y-axis moving parts and Y-axis supersonic generator；
The Z axis supersonic generator includes Z axis moving parts and Z axis supersonic generator；
The X-axis supersonic generator, the Y-axis supersonic generator and Z axis supersonic generator position
Direction is mutually perpendicular to two-by-two.
Preferably, it also sets up air blower (not drawn in the figure), the air blower is connect with the alkali cleaning treatment box 7, is used
In carrying out blowback to the alkali liquor storage tank 3, first water storage tank and the second water storage tank 5 to pipeline.
Alkali cleaning treatment box 7 of the invention is described in detail:
Alkali cleaning treatment box 7, i.e. aluminum alloy mould alkali cleaning treatment box:
It include cabinet, case lid and controller, its advantages are to pass through component: feed inlet, ultrasonic cleaning component, temperature control
Aluminum alloy mould is lifted into after box house and is covered by the setting of heating element, liquid level sensor, filter element and discharge port
After case lid, it can be automatically finished the cleaning process of aluminum alloy mould, can not only realize the automation cleaning of aluminum alloy mould,
And it can accurately control alkaline reaction environment.
Since the moulding of aluminum alloy mould is different, in some complicated aluminum alloy moulds, part connection knot
Structure can be difficult to clean up, and can be cleaned with comprehensive to aluminum alloy mould by this three axis supersonic generator.It is specific next
It says, controller is controlled X-axis ultrasonic wave and occurred by control X-axis moving parts, Y-axis moving parts and Z axis moving parts
Device, Y-axis supersonic generator and Z axis supersonic generator are mobile, and the working range of supersonic generator can be made to reach cabinet
Every position, and then comprehensive cleaning can be carried out to aluminum alloy mould, aluminum alloy mould cleaning can be increased substantially
Cleanliness.
The temperature control heating component includes heater and temperature sensor；Heater is to be arranged in the intracorporal heating plate of case, add
One of heated filament or heating pipe are a variety of；Temperature sensor setting is in the bottom of box or is mobile knot moving up and down
Structure design.
Since lye has optimal reaction temperature range, when by lye control within the scope of optimum response, lye can be made
Reaction efficiency reach best, it is therefore necessary to by the temperature of temperature sensor real-time monitoring lye, and low in alkali liquid temperature
When the minimum value of optimal reaction temperature range, alkali liquid temperature is improved by heater.
Sprinkler part includes spray head and Telescopic rotating bar interconnected；Spray head is the controllable spray head of flow.
Air inlet component includes air blower and air inlet grille；Air inlet grille includes that several air inlets, air flap and air flap move
Moving part；The side of air inlet is arranged in air flap, for controlling the air inflow of the air inlet grille；Air blower, air flap move
Moving part is connected with controller.
Exhaust component includes air-introduced machine and outlet lattice；Outlet lattice include that several ventholes, outlet baffle and outlet baffle move
Moving part；Outlet baffle plate setting is in the side of venthole, for controlling the gas output of outlet lattice；Air-introduced machine, outlet baffle moving member
It is connected with controller.
Controller includes control chip interconnected and control device；Control device includes key, touch screen or wants distant
Control one of device or a variety of；Control chip and ultrasonic cleaning component, temperature control heating component, liquid level sensor, sprinkler part,
Air inlet component and exhaust component are connected.
Cabinet is rectangular parallelepiped structure；The side of case lid is movably fixed on cabinet, and can overturn on cabinet；Cabinet
Or locking member is additionally provided on case lid, locking member is used to case lid being fixed on cabinet.
The mode of operation of " aluminum alloy mould alkali cleaning treatment box " is described below:
When needing air inlet in cabinet, air is quickly blown in cabinet, when in cabinet by air blower work by air inlet grille
When air pressure is excessively high or needs exhausting spent gas, the intracorporal gas of case is quickly discharged by outlet lattice for air-introduced machine work.It needs to illustrate
, when needing to adjust the amount of air inlet or exhaust, it can not only be realized by adjusting the revolving speed of air blower or air-introduced machine, it can be with
It is realized by adjusting outlet baffle moving member and outlet baffle moving member in the position of case lid, here without limitation.
Control chip and control device can be set in cabinet or case lid, be also possible to control chip setting in cabinet or
In case lid, and control device is arranged on the outside of cabinet or case lid by lead, here without limitation.
It is put into cabinet firstly the need of by aluminum alloy mould to be cleaned, it specifically can be by way of lifting, then
Controller enters in cabinet according to the size Control lye of aluminum alloy mould from feed inlet, and then temperature control heating component works alkali
The temperature control of liquid is in suitable range, and then ultrasonic cleaning component works and cleans to aluminum alloy mould, after cleaning,
Lye can be drained into recovery channel by filter element and discharge port, then sprinkler part to the aluminum alloy mould after cleaning into
Row cleaning, finally drains into recovery channel by filter element and discharge port for the waste liquid after cleaning.In addition, in aluminum alloy mould alkali
It washes in the treatment box course of work, air inlet component and exhaust component according to circumstances can draw air into or be discharged, therefore this aluminium alloy
It can also include the baroceptor being connect with controller, air inlet component and exhaust component, intake section in mold alkali cleaning treatment box
Part and exhaust component control amount and the time of air inlet and exhaust according to the monitoring situation of baroceptor.
It should be understood that the course of work of 1, aluminum alloy mould alkali cleaning treatment box is suitable the step of being not limited to foregoing description
Sequence can also be adjusted as the case may be, such as lye enters in cabinet from feed inlet, then ultrasonic cleaning component work
Make simultaneously to clean aluminum alloy mould, then the work of temperature control heating component by the control of the temperature of lye in suitable range, can be with
It is that ultrasonic cleaning component is worked at the same time with temperature control heating component, here without limitation；2, recovery channel can be divided into both ends
Different pipelines, and that pipeline is controlled by control valve and is connected with discharge port, and selection is different when lye and waste liquid are discharged
Pipeline.
System of the invention matches progress with this method, passes through attached drawing, method and stream flow direction, it can be seen that system
Specific structure and running.
Below by data, present invention is described:
It being calculated with the output of China's aluminium extruded section, data show that Chinese aluminium annual output in 2017 is 38,200,000 tons,
Wherein aluminium extruded section yield is 19,500,000 tons, accounting 51%；Chinese aluminium annual output is 4554.6 ten thousand tons within 2018, wherein aluminium
Extrudate yield is 23,200,000 tons, accounting 50%.
The amount of compression of aluminium extrusion machine: machine tricks in profile averaged mold per ton are as follows: 20MN or less type is about 1.0 sets/
Ton (contains die trial), and the type of 20MN~40MN is about 0.3 set/ton (containing die trial), and 40MN or more type is about 0.2 set/ton (containing examination
Mould).Domestic aluminum profile enterprise mainly uses 20MN or less type, general aluminum material factory's profile per ton to produce based on architectural shape
Machine tricks is 0.6 set/ton in averaged mold, the producer of 100,000 tons of aluminium extruded sections of annual output, and machine tricks is 60,000 on year mold
Set.
We are with notebook data come the convert prior art and the technology of the present invention:
One, consumption:
(1) prior art: for the enterprise of 100,000 tons of aluminium extruded sections of annual output, piece alkali (hydrogen-oxygen is consumed in caustic wash process
Change sodium) it is about 300 tons, it generates containing about 2500 tons of alkali, the alkali-washing waste liquid containing aluminium.
Calculation is averaged according to prior art sodium hydroxide mass concentration as 150g/L, 150g/L alkali cleaning containing aluminium
Liquid density is about 1.25g/cm3, for the enterprise of 100,000 tons of aluminium extruded sections of annual output, 300 tons of piece alkali calculating, year are consumed per year
Generate alkali-washing waste liquid: 300 tons/year of * (1.25g/cm3/1000cm3/150g)=2500 ton/year.
(2) in the present patent application, system of the invention has been used, mold alkali wash water sodium hydroxide mass concentration is maintained at
80g/L, the sodium hydroxide mass concentration than the lye of the prior art save 70g/L；Lye density is according to 1.25g/cm3It calculates,
The enterprise of 100,000 tons of aluminium extruded sections of annual output, 2500 tons and 5000 yuan/ton piece alkali calculation of price of alkali-washing waste liquid, of the invention per year
Technology can save about: [(70g/1000cm3/)1.25g/cm3] * 2500 tons/year=140 tons/year of piece alkali, i.e., 700,000 yuan take
With.
Two, expense:
(1) the alkali cleaning mode of the prior art, for 100,000 tons of aluminium extruded section enterprises of annual output, alkali-washing waste liquid 2500 per year
Ton, alkali wash water density 1.25g/cm3, aluminium ion concentration 80g/L~120g/L, wherein aluminium ion concentration takes median 100g/L,
With aluminium hydroxide mud moisture content 35%, 1100 yuan/ton of aluminium hydroxide mud dangerous waste processing cost calculating after processing, about generate:
(100g/1000cm3/1.25g/cm3) * 2500 tons/year of * (78/27) * 1.35=780's ton/year is fluorine-containing containing heavy metals such as Ni
Aluminium hydroxide mud dangerous waste, the expenses of environmental protection of about 860,000 yuan/year.
(2) system and method for the invention, realize Zero discharge, save the environmental protection treatment expense of a large amount of solid dangerous wastes
With, and the aluminum ions complete recycling of waste liquid is realized, increase devil liquor recovery utilization benefit.The aluminium that this system finally recycles
Sour sodium byproduct moisture content 15% is calculated with 1500 yuan/ton of sodium aluminate commercial value, can save the environmentally friendly expense of about 860,000 yuan/year
With 750,000 yuan/year of income from sales of, sodium aluminate byproduct, add up to 1,610,000 yuan/year.
Three, the mold cleaning time:
(1) prior art: based on machine and artificial cooperating, lye is static state, mold alkali cleaning efficiency and week for alkali cleaning
Rate of rotation is low, in general, the mold alkali cleaning of diameter 300 about 4 hours, the mold alkali cleaning of diameter 500 about 8 hours, the mould of diameter 800
Tool alkali cleaning about 12 hours.
(2) system of the invention is a set of comprehensive caustic washing system, therefore, will improve mold alkali cleaning efficiency and turnover rate is low
About 1 times, effectively improve the punctual delivery rate of profile sales order.According to practical calculating, the mold alkali cleaning of diameter 300 about 2 hours,
The mold alkali cleaning of diameter 500 about 4 hours, the mold alkali cleaning of diameter 800 about 6 hours.
Four, environmental pollution:
(1) prior art: it is generally used without the open alkali slot of lid or simple exhausting, or is uncapped using handling mold
When, the chemical reaction that sodium hydroxide solution and aluminium in slot carry out, can emerge a large amount of up to 95-130 DEG C of high temperature, strong corrosive
It with irritating alkali vapor and hydrogen, and diffuses inside and outside alkali cleaning room, environmental pollution is serious, and operative employee is allowed to be in rugged environment
Lower work, and ambient enviroment may be polluted or be corroded, such as the aluminium extrusion substrate of surrounding cell is polluted and corroded.
(2) system of the invention can be closed as closed environment, and the exhaust gas of generation can handle completion in internal system,
Exhausting and drying such as are carried out to alkali cleaning treatment trough, realize the exhaust gas no pollution of working environment.
As it can be seen that the method and system of a kind of the Aluminum-Extruding Die alkali cleaning of the invention and waste liquid comprehensive reutilization be an advantage over it is existing
There is technology.
The above, embodiment of above are merely illustrative of the technical solution of the present invention, rather than its limitations；Although reference
Invention is explained in detail for previous embodiment, those skilled in the art should understand that: it still can be right
Technical solution documented by aforementioned each embodiment is modified or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit for each embodiment technical solution of the present invention that it does not separate the essence of the corresponding technical solution and
Range.
Claims (10)
1. a kind of method of the Aluminum-Extruding Die alkali cleaning and waste liquid comprehensive reutilization, which is characterized in that include the steps that alkali cleaning:
A1, piece alkali and water are put into preparation kettle, lye obtained is passed through alkali liquor storage tank, spare；
A2, mold to be processed is placed in alkali cleaning treatment box, alkali liquor storage tank is passed through lye to alkali cleaning treatment box, cleans mold, clearly
After the completion of washing, the lye of alkali cleaning treatment box is reversely passed through alkali liquor storage tank, dries alkali cleaning treatment box, and carries out to connecting line reversed
Purging；
A3, the first water storage tank are passed through clear water to alkali cleaning treatment box, and after the completion of cleaning, the clear water of alkali cleaning treatment box is reversely passed through first
Water storage tank dries alkali cleaning treatment box, and carries out reverse blow to connecting line；
A4, the second water storage tank are passed through clear water to alkali cleaning treatment box, and after the completion of cleaning, the clear water of alkali cleaning treatment box is reversely passed through second
Water storage tank dries alkali cleaning treatment box, and carries out reverse blow to connecting line；
After A5, alkali cleaning treatment box replace mold to be processed, step A1 to A4 repetitive operation, the first water storage tank is to alkali liquor storage tank at this time
Moisturizing, the second water storage tank are to the first water storage tank moisturizing, water source to the second water storage tank moisturizing, until aluminium in the alkali liquor storage tank of step A2
Ion concentration, which reaches the upper limit and becomes spent lye, then carries out step A6-A8；
A6, alkali liquor storage tank spent lye be passed through crystallization kettle and be evaporated crystallisation by cooling；
The crystal that A7, crystallization kettle solid-liquid mix enters centrifugation or filtering equipment is separated by solid-liquid separation, and solid is collected, liquid is passed through
Prepare kettle；
A8, crystallization kettle separation liquid enter preparation kettle, put into piece alkali, the first water storage tank is to preparing kettle moisturizing, the second water storage tank
To the first water storage tank moisturizing, water source to the second water storage tank moisturizing, prepare lye made from kettle and be passed through alkali liquor storage tank, repeat on
State step.
2. the method according to claim 1, wherein further including the steps that energy exchange:
It prepares the heat that kettle and alkali cleaning treatment box generate during the work time and reaches heat exchanger, energy, which is stored in, after heat exchange adds
In heat and energy-storage system, and energy is discharged or provided back to crystallization kettle by heating and energy-storage system control heat exchanger.
3. the method according to claim 1, wherein further including the steps that exhaust-gas treatment is discharged:
The exhaust gas that B1, alkali cleaning treatment box generate in alkaline cleaning procedure includes alkali steam, water vapour and hydrogen；
B2, alkali steam is sprayed and is condensed back；
B3, water vapour and hydrogen are discharged in a organized way.
4. the method according to claim 1, wherein the solution quality percentage of lye made from the step A1
Concentration is 15-50%.
5. the system of a kind of the Aluminum-Extruding Die alkali cleaning and waste liquid comprehensive reutilization, which is characterized in that including caustic washing system, control
System；
The caustic washing system, including prepare kettle, alkali cleaning treatment box, crystallization kettle, centrifugation or filtering equipment, the first water storage tank, second
Water storage tank, alkali liquor storage tank and water source；
The preparation kettle passes through pipeline with the alkali liquor storage tank, the first water storage tank, crystallization kettle, centrifugation or filtering equipment and water source
Connection；
The alkali cleaning treatment box is connected with the alkali liquor storage tank, first water storage tank, second water storage tank by pipeline respectively
It connects；
The water source, second water storage tank, first water storage tank, the alkali liquor storage tank pass sequentially through piping connection；
The crystallization kettle passes through piping connection with the alkali liquor storage tank, the centrifugation or filtering equipment；
The control system is connect with each component of the caustic washing system.
6. system according to claim 5, which is characterized in that further include energy system；
The energy system, including heat exchanger and heating and energy-storage system；
The heat exchanger is connect with the preparation kettle, crystallization kettle, alkali cleaning treatment box；
The heating and energy-storage system, connect with heat exchanger；
The control system is connect with each component of the energy system.
7. system according to claim 5, which is characterized in that it further include exhaust treatment system,
The exhaust treatment system, including hydrogen detector and packed tower, gas discharging apparatus；
The packed tower is connect with the alkali cleaning treatment box, and the hydrogen detector is installed indoors, the gas discharging apparatus
Exhaust outlet disposed within；
The control system is connect with each component of the exhaust treatment system.
8. system according to claim 5, which is characterized in that the alkali cleaning treatment box is aluminum alloy mould alkali cleaning processing
Case, including cabinet, case lid and controller；
Be provided in the cabinet feed inlet, ultrasonic cleaning component, temperature control heating component, liquid level sensor, filter element and
Discharge port, wherein the feed inlet is connected with the alkali liquor storage tank by pipeline, the ultrasonic cleaning component includes at least one
A supersonic generator, the temperature control heating component include heater and temperature sensor, the filter element, the discharge port
It is connect respectively with the recovery channel of the alkali liquor storage tank or the first water storage tank or the second water storage tank；
The case lid includes sprinkler part, air inlet component and exhaust component；
The controller and the ultrasonic cleaning component, the temperature control heating component, the liquid level sensor, the spray portion
Part, the air inlet component and the exhaust component are connected.
9. system according to claim 8, which is characterized in that the ultrasonic cleaning component occurs including three axis ultrasonic waves
Device, the three axis supersonic generator include X-axis supersonic generator, Y-axis supersonic generator and Z axis supersonic generator；
The X-axis supersonic generator includes X-axis moving parts and X-axis supersonic generator；
The Y-axis supersonic generator includes Y-axis moving parts and Y-axis supersonic generator；
The Z axis supersonic generator includes Z axis moving parts and Z axis supersonic generator；
The X-axis supersonic generator, the Y-axis supersonic generator and Z axis supersonic generator position direction
It is mutually perpendicular to two-by-two.
10. the system according to any one of claim 5-8, which is characterized in that also set up air blower, the air blower
It is connect with the alkali cleaning treatment box, for carrying out blowback to the alkali liquor storage tank, first water storage tank and the second water to pipeline
Storage tank.
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Application publication date: 20191011 |