CN217947861U

CN217947861U - Silicon steel pretreatment alkali liquor purification device and alkali liquor purification system

Info

Publication number: CN217947861U
Application number: CN202221530799.1U
Authority: CN
Inventors: 顾徐嘉; 卢禹龙; 张志杰
Original assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Yangzijiang Cold Rolled Sheet Co Ltd
Current assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Yangzijiang Cold Rolled Sheet Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-12-02
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a silicon steel pretreatment alkali liquor purification device and an alkali liquor purification system, which comprise a primary purification unit, a secondary purification unit and an alkali brush circulation tank; the primary purification unit comprises an inclined plate sedimentation tank, the top of the inclined plate sedimentation tank is provided with an oil scraper, and the bottom of the inclined plate sedimentation tank is provided with a first sewage discharge port; a feed inlet and a discharge outlet are arranged on the inclined plate precipitation tank; the feed inlet is communicated with the alkali brush circulation tank, and the discharge outlet is communicated with the secondary purification unit; the secondary purification unit comprises a plurality of variable-filter-diameter filters arranged in parallel, a water inlet and a water outlet are formed in each variable-filter-diameter filter, and the water inlets are communicated with the discharge hole; the water outlet is communicated with the alkali brush circulation groove, and the bottom of the variable filter diameter filter is provided with a second sewage draining outlet. The utility model discloses well one-level purification unit can get rid of the grease in the alkali lye, and the impurity of more particle diameters can be filtered to second grade purification unit, through the filtration footpath that changes the filter core, and the impurity discharge after will filtering does not need frequent renew cartridge more, increases the filter effect.

Description

Silicon steel pretreatment alkali liquor purification device and alkali liquor purification system

Technical Field

The utility model relates to a steel washing section alkali lye cyclic utilization and waste liquid treatment technical field especially indicate a silicon steel pretreatment alkali lye purifier and alkali lye clean system.

Background

The general steel cleaning mainly comprises alkaline cleaning, electrolytic cleaning and rinsing, and the production line corresponds to an alkaline cleaning section (comprising alkaline spraying, alkaline soaking and alkaline scrubbing), an electrolytic cleaning section and a rinsing section. In order to better remove oil stains and iron powder on the surface of steel, the cleaning solution for alkali cleaning usually adopts NaOH alkali solution added with surfactant and other components to ensure the cleaning effect of steel.

In order to prolong the recycling period of the alkali liquor, iron powder, grease and impurities in the alkali liquor in the alkali brush circulation tank need to be removed, so that the cleanness degree of the alkali liquor is ensured, and the influence of excessive impurities on the surface quality of the product is prevented.

Get rid of iron among the prior art and mainly rely on magnetic filter in the alkali lye, its mainly used gets rid of the iron powder in the alkali lye circulating slot, brings out partial grease through getting rid of iron powder simultaneously, and partial grease still exists in addition, uses for a long time not only can lead to the pipeline to block up, and the impurity after the magnetic filter core filters is difficult to wash simultaneously, causes the jam of filter core easily, needs frequent renew cartridge, influences production efficiency.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem that the filter core is blocked up easily to overcome alkali lye purifier among the prior art when filtering impurity, leads to the frequent defect of renew cartridge.

In order to solve the technical problem, the utility model provides a silicon steel pretreatment alkali liquor purification device, which comprises a primary purification unit, a secondary purification unit and an alkali brush circulation tank;

the primary purification unit comprises an inclined plate sedimentation tank, the top of the inclined plate sedimentation tank is provided with an oil scraper, and the bottom of the inclined plate sedimentation tank is provided with a first sewage discharge port; a feed inlet and a discharge outlet are arranged on the inclined plate sedimentation tank; the feed inlet is communicated with the alkali brush circulation tank, and the discharge outlet is communicated with the secondary purification unit;

the secondary purification unit comprises a plurality of variable-filter-diameter filters arranged in parallel, a water inlet and a water outlet are formed in each variable-filter-diameter filter, and the water inlets are communicated with the discharge hole; the water outlet is communicated with the alkali brush circulation groove, and a second sewage draining outlet is formed in the bottom of the variable filter diameter filter; the filter diameter is contracted when the variable filter is used for filtering, and the filter diameter is expanded when the variable filter is used for discharging sewage.

In an embodiment of the utility model, the alkali brush circulation tank with be provided with first elevator pump between the inclined plate precipitation tank, first elevator pump with be provided with first check valve between the inclined plate precipitation tank.

In an embodiment of the utility model, the bottom of inclined plate precipitation tank is provided with V type groove, first drain outlet sets up the bottom in V type groove.

In an embodiment of the present invention, a first presser is disposed at the bottom of the first sewage draining port, and a first sewage draining valve is disposed between the first sewage draining port and the first presser.

The utility model discloses an embodiment, the delivery port of inclined plate precipitation tank with be provided with the second elevator pump between the variable filter element, the second elevator pump with be provided with the second check valve between the variable filter element.

In an embodiment of the present invention, a water inlet valve is disposed between the second check valve and the water inlet of the variable filter.

In an embodiment of the present invention, a drain valve is disposed between the water outlet and the alkali brush circulation tank.

The utility model discloses an in the embodiment, still include the backwashing unit, the backwashing unit includes the compressed air pipeline, the compressed air pipeline with the delivery port communicates with each other, just the compressed air pipeline with be provided with the pneumatic valve between the delivery port.

In one embodiment of the utility model, a second blow-down valve is arranged at the bottom of the second blow-down port, and a sludge groove is arranged at the bottom of the second blow-down valve; the bottom in sludge impoundment is provided with the second squeezer, the second squeezer with be provided with the third blowoff valve between the sludge impoundment.

An alkali liquor purification system comprises the silicon steel pretreatment alkali liquor purification device.

Compared with the prior art, the technical scheme of the utility model have following advantage:

the utility model discloses a silicon steel pretreatment lye purifier and lye purification system, can separate and remove the grease in the lye through the primary purification unit, discharge after precipitating some iron powder and impurity simultaneously; the variable filter diameter filter in the secondary purification unit can filter impurities with more particle diameters, and the filtering precision is improved. And impurity in the alkali liquor is after filtering, through changing the filter path of filter core, will filter impurity discharge, resumes the filter path and continues the filtration of impurity, guarantees the filter effect of impurity to need not frequently to change the filter core.

Drawings

In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic structural view of another embodiment of the present invention;

the specification reference numbers indicate: 1. an alkali brush circulation tank; 2. a first lift pump; 3. an inclined plate sedimentation tank; 4. an oil scraping machine; 5. a first drain port; 6. a first waste valve; 7. a first press; 8. a second lift pump; 9. a variable filter diameter filter; 10. a water inlet; 11. a water outlet; 12. a second sewage draining outlet; 13. a water inlet valve; 14. a drain valve; 15. an air valve; 16. a second blowoff valve; 17. a sludge tank; 18. A third blowoff valve; 19. a second press; 20. an electrolytic circulating tank.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, the utility model discloses a silicon steel pretreatment alkali liquor purification device, which comprises a primary purification unit, a secondary purification unit and an alkali brush circulation tank 1; the utility model discloses a two-stage purification falls to minimum with impurity and grease in the alkali lye, prolongs the time that the alkali lye was changed.

The primary purification unit comprises an inclined plate precipitation tank 3, the top of the inclined plate precipitation tank 3 is provided with an oil scraper 4, and the bottom of the inclined plate precipitation tank 3 is provided with a first sewage discharge port 5; the inclined plate precipitation tank 3 is provided with a feed inlet and a discharge outlet; the feed inlet is communicated with the alkali brush circulation tank 1, and the discharge outlet is communicated with the secondary purification unit.

It can be seen that the primary purification unit is to make the crude alkali liquor in the alkali brush circulation tank 1 enter the inclined plate precipitation tank 3 for precipitation, wherein the inclined plate precipitation tank is adopted according to the shallow layer theory, an inclined plate is additionally arranged in the advection tank, the separation surface area of unit tank volume is improved, water among the inclined plates is in a laminar flow state, and sewage flows into the inclined plate precipitation tank 3 from a feed inlet, then flows downwards along the plate surface and is discharged from a discharge outlet. When sewage passes through the inclined plate, suspended oil particles in water float to the lower surface of the upper plate and flow upwards along the lower surface of the plate to float to the water surface, and oil on the upper layer is scraped out through the oil scraper 4 at the top, so that the content of oil in alkali liquor is reduced. And the sludge and iron powder in the water sink to the upper surface of the lower plate and finally fall into the bottom of the inclined plane sedimentation tank 3 to be discharged through the first sewage discharge port 5.

The second grade purification unit includes the variable filter 9 that a plurality of set up side by side, and variable filter 9 can change the size of filter path as required, as the utility model discloses an optimal scheme, this variable filter 9 adopts the electrospinning technique to utilize the electrospinning nano synthetic fiber corrosion resistant material, and the filter screen can contract when the circular telegram, reaches precise filtration's effect to reach effectual solid-liquid separation. The variable-filter-diameter filter 9 is provided with a water inlet 10 and a water outlet 11, and the water inlet 10 is communicated with the discharge hole; the alkali liquor enters the variable-filter-diameter filter 9 through the sedimentation rough filtration, the alkali liquor after the secondary filtration is discharged from the water outlet 11 after passing through the variable-filter-diameter filter 9, and the alkali liquor is introduced into the alkali brush circulation tank 1 to complete the filtration of the alkali liquor. Finally, the filtered foreign substances are discharged through the second discharging outlet 12 at the bottom of the variable filter 9.

The utility model carries out coarse filtration to the alkali liquor oil separation in the alkali brush circulation groove 1 through the primary purification unit, then passes through the variable filter 9 in the secondary purification unit, and can filter iron powder and impurities with smaller particle size through the variable filter 9, and the filtering effect is good; the filtering diameter of the variable-diameter filter 9 is enlarged, so that filtered impurities can be discharged, and the filter element cannot be blocked; the filtering effect of impurities is ensured, and the filter element does not need to be frequently replaced.

Furthermore, in order to ensure that the alkali liquor in the alkali brush circulation tank 1 smoothly enters the inclined plate precipitation tank 3, a first lift pump 2 is arranged between the alkali brush circulation tank 1 and the inclined plate precipitation tank 3 to provide power for lifting the alkali liquor in the alkali brush circulation tank 1. It should be noted that the first lift pump 2 pumps the liquid from the bottom of the circulation tank 1 of the alkali brush as much as possible to pump out the iron powder and impurities precipitated at the bottom of the circulation tank 1 of the alkali brush. A first check valve is arranged between the first lifting pump 2 and the inclined plate precipitation tank 3 to prevent the alkali liquor in the inclined plate precipitation tank 3 from flowing back to the alkali brush circulation tank 1.

Further, the bottom of inclined plate sedimentation tank 3 is provided with V type groove, and first drain outlet 5 sets up in the bottom in V type groove, makes things convenient for the alkali lye in the inclined plate sedimentation tank 3 to fall into to the V type inslot after the primary sedimentation, sets up first drain outlet 5 in the bottom in V type groove, makes the mud after the sediment all discharge smoothly.

Further, moisture in the drain discharged mud is higher, and holistic quality is great, inconvenient transportation, and the bottom of first drain 5 is provided with first squeezer 7, extrudes the moisture in the mud through first squeezer 7, obtains the impurity that the water content is less, makes things convenient for the transportation of these impurity. Be provided with first dirty valve 6 between first drain outlet 5 and the first squeezer 7, can control the discharge amount of first drain outlet 5, regularly open first dirty valve 6, regularly discharge the mud in the inclined plate precipitation tank 3.

Furthermore, a second lift pump 8 is arranged between the water outlet 11 of the inclined plate sedimentation tank 3 and the variable filter diameter filter 9, and a second check valve is arranged between the second lift pump 8 and the variable filter diameter filter 9. It can be seen that the second lift pump 8 and the second check valve herein function the same as the first lift pump 2 and the first check valve in the one-stage purification unit and will not be described more herein. Different from the first lift pump 2, the second lift pump 8 extracts the liquid in the middle layer in the inclined plate precipitation tank 3, namely the precipitated rough-filtered alkali liquor, and the liquid contains a certain amount of iron powder and impurities.

Further, in the two-stage purification unit, a plurality of variable filter 9 are provided in parallel, and the throughput of each variable filter 9 is the same. And water inlet valves 13 are arranged between the second check valves and the water inlets 10 of the variable-diameter filters 9, wherein the water inlet valves 13 can cut off the single variable-diameter filter 9, overhaul the single variable-diameter filter 9 and cannot influence the normal use of other variable-diameter filters 9.

Further, a drain valve 14 is arranged between the water outlet 11 and the alkali brush circulation tank 1, after the variable filter 9 starts to work, the drain valve 14 is opened, and the alkali liquor after filtration is conveyed into the alkali brush circulation tank 1.

Further, the reverse cleaning device comprises a reverse cleaning unit, the reverse cleaning unit comprises a compressed air pipeline, the compressed air pipeline is communicated with the water outlet 11 and is matched with the variable filter diameter filter 9, when the filter diameter of the variable filter diameter filter 9 is changed to remove iron powder and impurities, compressed air is introduced, more iron powder and impurities are washed away, the service life of the filter screen is prolonged, and frequent replacement is avoided. An air valve 15 is arranged between the compressed air pipeline and the water outlet 11 and can control the spraying and the cutting of the compressed air.

Further, a second blow-down valve 16 is arranged at the bottom of the second blow-down outlet 12, and a sludge groove 17 is arranged at the bottom of the second blow-down valve 16; the bottom of the sludge tank 17 is provided with a second presser 19, and a third blow-down valve 18 is arranged between the second presser 19 and the sludge tank 17.

Specifically, the second and

third waste valves

16, 18 are the same as the first waste valve 6, and will not be described herein; and the function of the sludge tank 17 is to collect the sludge filtered by the variable filter diameter filter 9, carry out secondary sedimentation, pour the liquid on the upper layer after sedimentation, finally discharge the sludge into the press through a third blowoff valve 18 at the bottom of the sludge tank 17, and take away centralized treatment through a collecting vehicle after pressing.

Referring to fig. 2, the alkali liquor purification system comprises a silicon steel pretreatment alkali liquor purification device, the utility model is not only suitable for a steel alkali liquor washing section, but also suitable for an electrolytic cleaning section; it should be noted that the electrolytic cleaning section is a steel processing technology after the alkali liquor washing section, and compared with the content of impurities in the alkali liquor circulation tank 1, the impurities in the electrolytic circulation tank 20 are greatly reduced, so that the impurities do not need to pass through a primary purification unit, and can be directly merged into a secondary purification unit, and the impurities are filtered by the variable filter 9 to remove iron powder and other impurities in the alkali liquor.

To sum up, the utility model discloses a silicon steel pretreatment alkali lye purifier and alkali lye clean system's concrete process flow as follows: firstly, a first-stage purification unit is adopted, a first lifting pump 2 pumps an alkali liquor to be purified into an inclined plate precipitation tank 3, the inclined plate precipitation tank 3 separates three layers of oil and liquid of the alkali liquor to be purified, grease at the top is scraped out through an oil scraper 4, and sludge at the bottom is discharged and enters a first presser 7; secondly, a secondary purification unit is adopted, a second lift pump 8 pumps the intermediate layer precipitation coarse filtration alkali liquor in the inclined plate precipitation tank 3 into a variable filter 9, the variable filter 9 separates solid from liquid, and the filtered alkali liquor returns to the alkali brush circulation tank 1 for continuous utilization; the filtered sludge is finally discharged to the second press 19 by changing the diameter of the filter element of the variable diameter filter 9. The utility model discloses can play fine purification effect to alkali lye, guarantee the filter effect of impurity in the alkali lye to need not frequent renew cartridge.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a silicon steel pretreatment lye purifier which characterized in that: comprises a primary purification unit, a secondary purification unit and an alkali brush circulation tank;

2. The silicon steel pretreatment lye purification apparatus of claim 1, wherein: the alkali brush circulation tank with be provided with first elevator pump between the inclined plate precipitation tank, first elevator pump with be provided with first check valve between the inclined plate precipitation tank.

3. The silicon steel pretreatment lye purification apparatus of claim 1, wherein: the bottom of swash plate precipitation tank is provided with V type groove, first drain outlet sets up the bottom in V type groove.

4. The silicon steel pretreatment lye purification apparatus of claim 1, wherein: the bottom of first drain outlet is provided with first squeezer, first drain outlet with be provided with first blowoff valve between the first squeezer.

5. The silicon steel pretreatment lye purification apparatus of claim 1, wherein: the utility model discloses a filter, including swash plate precipitation tank, but variable filter element filter, the delivery port of swash plate precipitation tank with be provided with the second elevator pump between the variable filter element filter, the second elevator pump with be provided with the second check valve between the variable filter element filter.

6. The silicon steel pretreatment lye purification apparatus of claim 5, wherein: and water inlet valves are arranged between the second check valve and the water inlets of the variable filter.

7. The silicon steel pretreatment lye purification apparatus of claim 1, wherein: a drain valve is arranged between the water outlet and the alkali brush circulation tank.

8. The silicon steel pretreatment lye purification apparatus of claim 1, wherein: the anti-cleaning device is characterized by further comprising an anti-cleaning unit, wherein the anti-cleaning unit comprises a compressed air pipeline, the compressed air pipeline is communicated with the water outlet, and an air valve is arranged between the compressed air pipeline and the water outlet.

9. The silicon steel pretreatment alkaline solution purification device of claim 1, characterized in that: a second blow-down valve is arranged at the bottom of the second blow-down port, and a sludge groove is formed in the bottom of the second blow-down valve; the bottom of sludge impoundment is provided with the second squeezer, the second squeezer with be provided with the third blowoff valve between the sludge impoundment.

10. An alkali cleaning system, characterized by comprising the silicon steel pretreatment alkali cleaning device of any one of claims 1 to 9.