Sewage purification equipment for sewage treatment of steel plant

Abstract

The invention discloses sewage purification equipment for sewage treatment of a steel plant, and relates to the technical field of sewage purification. According to the sewage purification equipment for sewage treatment of the steel plant, due to the fact that newly guided sewage is not limited and directly impacts the liquid level of an air flotation method oil removal area, oil dirt is mixed with the sewage again, and meanwhile, the sewage without oil dirt removal possibly directly impacts a drainage area, and enough time is not enough for oil removal. The vertical bending of the bending plate is utilized to protect the oil stain on the surface of the oil removal area of the air flotation method, so that the newly introduced sewage must pass through the bottom of the bending plate and is guided to the oil removal position of the air flotation method by the guide plate, and the condition that the oil stain is mixed with the sewage again due to the fact that the sewage impacts the oil stain on the surface of the oil removal area under the pressure of the introduced sewage is avoided; meanwhile, the situation that the oil removal work cannot be completed due to the fact that sewage without oil stain removal directly impacts a drainage area is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage purification technical field, specifically to a sewage purification equipment for sewage treatment in a steel mill. BACKGROUND

[0002] Sewage purification in sewage treatment in a steel mill is a core link to ensure that waste water meets the discharge standard or is recycled, and its purpose is to remove various pollutants generated in the steelmaking process, such as suspended solids, heavy metals, oils, organic matter, etc. The composition of sewage in a steel mill is complex, including steelmaking dust washing water, equipment cooling water, rolling emulsion, etc. Purification needs to be treated in stages by combining multiple processes. The sewage usually includes floating oil and emulsified oil. Emulsified oil has strong stability and needs to be treated by demulsification. The emulsified oil after demulsification is usually separated from the sewage by air flotation method. Air bubbles are introduced into the sewage to adsorb oil droplets or flocs, and then carried to the water surface. After reaching the water surface, the oil stains are guided out to achieve separation from the sewage.

[0003] In the process of sewage oil removal by air flotation method, the newly introduced sewage directly impacts the liquid surface of the air flotation oil removal area without being limited, causing the oil stains to mix with the sewage again. At the same time, the sewage without oil removal may directly impact the drainage area, resulting in insufficient time for oil removal. SUMMARY

[0004] To achieve the above purpose, the present application is realized by the following technical scheme:

[0005] A sewage purification equipment for sewage treatment in a steel mill, comprising:

[0006] A purification tank, one end of which is fixedly installed with a water inlet pipe, the other end of which is fixedly installed with a water outlet pipe, and the top of the side of the purification tank connected with the water inlet pipe is fixedly installed with an oil guide groove and a slag guide groove;

[0007] A gas guide mechanism, which is installed at the bottom of the inner wall of the purification tank, and the outer side of the purification tank is fixedly installed with a gas pump, and the gas outlet of the gas pump is connected with the gas guide mechanism through a pipeline;

[0008] A flow dividing mechanism, which is installed in the purification tank, is located directly above the gas guide mechanism, and corresponds to the oil guide groove;

[0009] The bottom of the inner wall of the purification tank is fixedly installed with a slag collecting groove near one side of the water inlet pipe, the top of the slag collecting groove is fixedly installed with a grating plate, the top end of the grating plate is inclined to the water inlet pipe, and grating grooves are uniformly arranged on the outer side of the grating plate, the top of the grating plate is fixedly installed with a top plate, and the side away from the water inlet pipe is fixedly installed with a zigzag plate.

[0010] Preferably, the top of the top plate is flush with the top of the purification tank, the slag guide groove is between the top plate and the water inlet pipe, and the inclined water inlet pipe cooperates with the grating plate to prevent the sewage from directly impacting the grating plate when the sewage is introduced, so that the sewage impacts the slag collecting groove, the solid impurities sinking to the bottom of the water smoothly enter the slag collecting groove for collection, and the impact pressure does not drive the impurities to be stuck in the grating grooves of the grating plate, thereby affecting the filtering effect of the grating plate.

[0011] Preferably, the flow distribution mechanism comprises a top groove plate, the top groove plate is slidingly installed in the interior of the purification tank, the top groove plate corresponds to the position of the oil guide groove, and the top groove plate is directly above the air guide mechanism, a beveled groove is arranged at the center position of the top of the top groove plate, and the beveled groove is inclined downward near the oil guide groove, and through grooves are uniformly arranged at the beveled groove of the top groove plate, the through grooves cooperate with the beveled groove to provide a path for gas exhaust, and when the liquid surface fluctuates, the oil stains on the liquid surface can enter the beveled groove through the through grooves, and then the oil stains on the liquid surface are guided to the oil guide groove by the downward inclination of the beveled groove near the oil guide groove, thereby ensuring the oil removal effect when the liquid surface fluctuates greatly.

[0012] Preferably, the top groove plate is fixedly installed with a side sealing plate on the side close to the water outlet pipe, the side sealing plate is located between the air guide mechanism and the water outlet pipe, the bottom of the side sealing plate is tightly attached to the bottom of the inner wall of the purification tank, the side sealing plate is fixedly installed with an inclined sealing plate on the side close to the air guide mechanism, the inclined sealing plate and the side sealing plate cooperate to close the path of the sewage flowing to the position of the water outlet pipe when the liquid surface does not reach the position of the oil guide groove, so that the oil on the surface cannot be guided out through the oil guide groove when the amount of introduced sewage is small, the situation that the oil on the surface is directly guided out through the water outlet pipe with the sewage is avoided, and the oil removal effect is affected, the end of the inclined sealing plate away from the side sealing plate is inclined downward to the side of the air guide mechanism, and the end of the inclined sealing plate away from the side sealing plate is fixedly installed with a side cushion strip.

[0013] Preferably, the air guide mechanism comprises a fixed frame, the fixed frame is fixed to the bottom of the inner wall of the purification tank, and the fixed frame is located directly below the top groove plate, the side of the fixed frame close to the water outlet pipe is tightly attached to the outside of the side cushion strip, and the top of the inner wall of the fixed frame is fixedly installed with a circular groove plate, the top of the circular groove plate is uniformly provided with circular grooves, and the circular grooves of the circular groove plate are fixedly installed with air guide warehouses, the top of the air guide warehouse is uniformly provided with air holes, the bottom of the air guide warehouse is fixedly installed with a fixed pipe, the bottom of the fixed pipe is fixedly installed with a shunt pipe, one end of the shunt pipe is fixedly installed with a communication pipe, the end of the communication pipe away from the shunt pipe penetrates through the fixed frame and extends to the outside of the purification tank, and the air outlet end of the air pump is connected with the communication pipe through a pipeline.

[0014] Preferably, the top end of the fixed pipe penetrates through the air guide warehouse and extends to the inside, the center position of the top of the air guide warehouse is fixedly installed with an axle block, the outside of the axle block is rotatably installed with an impeller, and the outside of the fixed pipe is slidably installed with an inner sliding disc, the inner sliding disc and the elastic gasket ring cooperate to block the air holes when the air pressure in the air guide warehouse is small, the pressure can deform the elastic gasket ring by compressing the inner sliding disc when the air pressure in the air guide warehouse reaches a certain degree, the top block opens the air holes, the phenomenon that the flocculation material blocks the air holes and affects the air guide is avoided, the inner sliding disc is located in the inside of the air guide warehouse, the top of the inner sliding disc is fixedly installed with a top block, the top blocks are uniformly installed on the top of the inner sliding disc, the top blocks correspond to the air holes of the air guide warehouse in a one-to-one manner, and the bottom of the inner sliding disc is fixedly installed with an elastic gasket ring between the inner wall of the air guide warehouse.

[0015] The present application provides a sewage purification equipment for sewage treatment in a steel mill.

[0016] I. The sewage purification equipment for the sewage treatment of the steelmaking plant, through the cooperation of the zigzag plate and the guide plate, the vertical zigzag of the zigzag plate is used to protect the surface oil stain of the oil removal area of the air flotation method, so that the newly introduced sewage must pass through the bottom of the zigzag plate and be guided to the oil removal position of the air flotation method by the guide plate, so as to avoid that the surface oil stain of the oil removal area is impacted by the sewage under the pressure of the introduced sewage, so that the oil stain is mixed with the sewage again, the oil removal effect is affected, and the sewage without removing the oil stain directly impacts the drainage area, so that the oil removal work cannot be completed.

[0017] II. The sewage purification equipment for the sewage treatment of the steelmaking plant, through the cooperation of the inclination of the water inlet pipe and the grid plate, when the sewage is introduced, the grid plate is avoided from being directly impacted by the sewage, the sewage is impacted by the slag collecting groove position, the solid impurities sinking into the bottom of the water smoothly enter the slag collecting groove for collection, and meanwhile, after the grid plate is directly impacted by the sewage, the impact pressure is prevented from driving the impurities, so that the impurities are stuck in the grid groove position of the grid plate, and the filtering effect of the grid plate is affected.

[0018] III. The sewage purification equipment for the sewage treatment of the steelmaking plant, through the cooperation of the through groove of the top groove plate and the inclined groove, the through groove provides a path for gas discharge, and when the liquid surface fluctuates, the oil stain on the liquid surface can enter the inclined groove through the through groove, and then the downward inclination of the inclined groove close to one end of the oil guide groove guides the oil stain on the liquid surface to the oil guide groove, so as to ensure the oil removal effect when the liquid surface fluctuates greatly.

[0019] IV. The sewage purification equipment for the sewage treatment of the steelmaking plant, through the cooperation of the inclined sealing plate and the side sealing plate, when the liquid surface does not reach the oil guide groove position, the inclined sealing plate and the side sealing plate close the path of the sewage flowing to the water outlet pipe position, so as to avoid that when the amount of introduced sewage is small, the oil stain on the surface cannot be guided out through the oil guide groove, the situation that the oil stain is directly guided out through the water outlet pipe with the sewage occurs, and the oil removal effect is affected.

[0020] V. The sewage purification equipment for the sewage treatment of the steelmaking plant, through the cooperation of the inner sliding disc and the elastic gasket, when the internal air pressure of the air guide warehouse is small, the top block blocks the air hole, when the internal air pressure reaches a certain degree, the pressure can only be compressed by the inner sliding disc to deform the elastic gasket, so that the top block opens the air hole, so as to avoid that the sewage directly enters the internal air guide warehouse, the flocculent material blocks the air hole, and the air guide is affected. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the sewage purification equipment for the sewage treatment of the steelmaking plant.

[0022] Figure 2 It is a structure side view of the sewage purification equipment for the sewage treatment of the steelmaking plant.

[0023] Figure 3 It is a structure sectional view of the sewage purification equipment for the sewage treatment of the steelmaking plant.

[0024] Figure 4 Figure 2 is a structural exploded side view of a sewage purification device for sewage treatment in a steel plant according to the present application;

[0025] Figure 5 Figure 4 is a position structure schematic view of a shunt mechanism and a gas guide mechanism according to the present application;

[0026] Figure 6 Figure 5 is a structural bottom view of a shunt mechanism according to the present application;

[0027] Figure 7 Figure 6 is a structural schematic view of a gas guide mechanism according to the present application;

[0028] Figure 8 Figure 7 is a structural exploded view of a gas guide mechanism according to the present application;

[0029] Figure 9 Figure 8 is a partial structural schematic view of a gas guide mechanism according to the present application;

[0030] Figure 10 Figure 9 is a partial structural exploded view of a gas guide mechanism according to the present application.

[0031] In the figure: 1, purification tank; 2, shunt mechanism; 3, gas guide mechanism; 4, water inlet pipe; 5, slag guide tank; 6, oil guide tank; 7, gas pump; 8, water outlet pipe; 9, grating plate; 10, slag collecting tank; 11, flow guide plate; 12, zigzag plate; 13, top plate; 21, top tank plate; 22, side sealing plate; 23, inclined sealing plate; 24, side floating block; 25, side cushion strip; 301, fixed frame; 302, round tank plate; 303, impeller; 304, communication pipe; 305, shunt pipe; 306, gas guide warehouse; 307, shaft block; 308, inner sliding disc; 309, fixed pipe; 310, elastic cushion ring; 311, top block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] A first embodiment, as shown in Figures 1 to 4 The present application provides a technical solution:

[0034] A sewage purification device for sewage treatment in a steel plant, comprising:

[0035] The purification tank 1 is fixedly installed with a water inlet pipe 4 at one end, and a water outlet pipe 8 at the other end, and a top of a side connected with the water inlet pipe 4 outside the purification tank 1 is fixedly installed with an oil guide groove 6 and a slag guide groove 5;

[0036] The air guide mechanism 3 is installed at a bottom of an inner wall of the purification tank 1, and an air pump 7 is fixedly installed outside the purification tank 1, and an air outlet of the air pump 7 is connected with the air guide mechanism 3 through a pipeline;

[0037] The flow distribution mechanism 2 is installed inside the purification tank 1, and is located directly above the air guide mechanism 3, and corresponds to the oil guide groove 6;

[0038] The slag collection groove 10 is fixedly installed at a bottom of a side close to the water inlet pipe 4 of the purification tank 1, and a top of the slag collection groove 10 is fixedly installed with a grating plate 9, in the process of sewage being introduced into the purification tank 1 through the water inlet pipe 4, the sewage is obliquely impacted downwards in the process of being introduced, and impacts a position of the slag collection groove 10, so as to avoid the sewage directly impacting the grating plate 9, and then in the process of the sewage being continuously introduced, a liquid surface gradually rises to the position of the grating plate 9, and floating impurities in the sewage are blocked through a grating groove of the grating plate 9, and in the process of the liquid surface gradually rising, the floating impurities are guided into the slag guide groove 5 through the grating plate 9, so that the top layer of the sewage drives the floating impurities to be guided out through the slag guide groove 5 for collection, a top end of the grating plate 9 is inclined to the water inlet pipe 4, and grating grooves are uniformly arranged at the outside of the grating plate 9, a top of the grating plate 9 is fixedly installed with a top plate 13, a side away from the water inlet pipe 4 of the top plate 13 is fixedly installed with a zigzag plate 12, and a side away from the top plate 13 of the zigzag plate 12 is vertically zigzag downwards, the sewage passing through the grating plate 9 enters an inside of the zigzag plate 12, and the sewage passing through the grating plate 9 is blocked by a vertical surface of the side away from the top plate 13 of the zigzag plate 12, and flows downwards, and is guided to the air guide mechanism 3 area from a bottom of the flow guide plate 11, and a bottom end of the zigzag plate 12 is fixedly installed with the flow guide plate 11, and a side away from the zigzag plate 12 of the flow guide plate 11 is inclined downwards to the air guide mechanism 3.

[0039] A top of the top plate 13 is flush with a top of the purification tank 1, the slag guide groove 5 is between the top plate 13 and the water inlet pipe 4, and an end close to the purification tank 1 of the water inlet pipe 4 is obliquely installed downwards.

[0040] The second embodiment is based on the first embodiment, and please refer to Figures 5 to 6As shown, the shunt mechanism 2 includes a top groove plate 21 which is slidingly installed inside the purification tank 1, the position of the top groove plate 21 corresponds to that of the oil guide groove 6, the through groove of the top groove plate 21 provides a path for the discharge of gas, when the sewage liquid level is low, the sewage does not contact the side float 24, and the buoyancy cannot push the top groove plate 21 to move upwards in the purification tank 1, at this time, the bottom of the side sealing plate 22 contacts the inner wall of the purification tank 1, limiting the flow of sewage to the side of the side sealing plate 22 close to the water outlet pipe 8, at the same time, the side pad strip 25 contacts the outer side of the fixed frame 301, assisting the side sealing plate 22 to block the flow of sewage, and the top groove plate 21 is located directly above the gas guide mechanism 3, a beveled groove is formed at the center position of the top of the top groove plate 21, and the end of the beveled groove close to the oil guide groove 6 is inclined downward, the beveled groove of the top groove plate 21 is uniformly provided with a through groove, as the liquid level rises, after contacting the side float 24, the side float 24 generates buoyancy, pushing the top groove plate 21 to move upwards, opening the path of the oil and dirt flowing to the oil guide groove 6 at the liquid level position, at the same time, the side pad strip 25 is separated from the contact with the fixed frame 301, the side sealing plate 22 opens the path of the bottom layer sewage flowing to the water outlet pipe 8, so that the bottom layer sewage can be guided out by the water outlet pipe 8, and the bottom of the top groove plate 21 is fixedly installed with the side float 24, the side float 24 is symmetrically installed along the axis center position of the top groove plate 21, and the side float 24 is a hollow structure.

[0041] The side sealing plate 22 is fixedly installed on the side of the top groove plate 21 close to the water outlet pipe 8, the side sealing plate 22 is located between the gas guide mechanism 3 and the water outlet pipe 8, and the bottom of the side sealing plate 22 is tightly attached to the bottom of the inner wall of the purification tank 1, the side sealing plate 22 is fixedly installed on the side close to the gas guide mechanism 3, the end of the inclined sealing plate 23 away from the side sealing plate 22 is inclined downward to the side of the gas guide mechanism 3, and the end of the inclined sealing plate 23 away from the side sealing plate 22 is fixedly installed with the side pad strip 25.

[0042] The third embodiment is based on the first and second embodiments, please refer to Figures 7 to 10As shown, the air guide mechanism 3 includes a fixed frame 301 fixed on the bottom of the inner wall of the purification tank 1, and the fixed frame 301 is located directly below the top groove plate 21, and the side close to the water outlet pipe 8 is tightly attached to the outside of the side cushion strip 25, and the top of the inner wall of the fixed frame 301 is fixedly installed with a circular groove plate 302, and the top of the circular groove plate 302 is uniformly provided with a circular groove, and the circular groove plate 302 is fixedly installed with an air guide bin 306 at the circular groove, and the top of the air guide bin 306 is uniformly provided with an air hole, and after the sewage reaches the top of the air guide mechanism 3, the air guided by the air pump 7 is guided into the shunt pipe 305 through the communication pipe 304, and then the gas is guided into the air guide bin 306 through the fixed pipe 309, so that the air enters above the inner sliding disc 308, at this time the air hole of the air guide bin 306 is blocked by the top block 311, and the gas cannot be discharged from the air hole of the air guide bin 306, with the continuous introduction of the gas, the air pressure at the top of the inner sliding disc 308 gradually increases, so that the inner sliding disc 308 compresses the elastic pad ring 310 under pressure, and the inner sliding disc 308 drives the top block 311 to move downward in the air guide bin 306, opens the air hole of the air guide bin 306, and makes the high-pressure gas in the air guide bin 306 quickly discharged from the air hole, and the bottom of the air guide bin 306 is fixedly installed with the fixed pipe 309, and the bottom of the fixed pipe 309 is fixedly installed with the shunt pipe 305, and one end of the shunt pipe 305 is fixedly installed with the communication pipe 304, and the end of the communication pipe 304 away from the shunt pipe 305 penetrates through the fixed frame 301 and extends to the outside of the purification tank 1, and the air outlet end of the air pump 7 is communicated with the communication pipe 304 through a pipeline.

[0043] The top end of the fixed pipe 309 penetrates through the air guide bin 306 and extends to the inside, the center position of the top of the air guide bin 306 is fixedly installed with a shaft block 307, the outer side of the shaft block 307 is rotatably installed with an impeller 303, the outer side of the fixed pipe 309 is slidably installed with an inner sliding disc 308, and the inner sliding disc 308 is located in the inside of the air guide bin 306, the top of the inner sliding disc 308 is fixedly installed with a top block 311, and the top block 311 is uniformly installed on the top of the inner sliding disc 308, and the top block 311 corresponds to the air hole of the air guide bin 306 one by one, in the discharging process, the upwelling gas drives the sewage to flow, so that the impeller 303 rotates, cooperates with the rapid discharge of the gas, increases the diffusion range of the gas, and the discharged gas upwells in the form of bubbles in the sewage, in the floating process, the bubbles adsorb oil droplets or flocs, carry them to float to the water surface, so that the oil stains in the sewage are concentrated on the liquid surface, and the elastic pad ring 310 is fixedly installed between the bottom of the inner sliding disc 308 and the inner wall of the air guide bin 306.

[0044] In use, the sewage is introduced into the pipeline and the pipeline is connected to the water inlet pipe 4 and the water outlet pipe 8, respectively, and the sewage is introduced into the purification tank 1 from the water inlet pipe 4, so that the sewage is first filtered through the grid plate 9 to remove the solid impurities in the sewage, and then the sewage with the impurities removed is introduced between the air guide mechanism 3 and the flow distribution mechanism 2, and the air is introduced into the air guide mechanism 3 through the air pump 7 after being pressurized by the air pump 7, and the air is guided out through the air guide mechanism 3, so that the air is introduced into the sewage and rises upwards in the sewage. In the process of rising upwards, the bubbles adsorb oil droplets or flocculation and carry them to the water surface. With the continuous introduction of the sewage, the liquid level rises, and the top layer of oil and the bottom layer of sewage are separated by the flow distribution mechanism 2 and discharged.

[0045] In the process of introducing the sewage into the purification tank 1 through the water inlet pipe 4, the inclination of the water inlet pipe 4 causes the sewage to impact obliquely downward during the introduction process, and impact the position of the slag collecting groove 10, so as to avoid direct impact of the sewage on the grid plate 9. Then, with the continuous introduction of the sewage, the liquid level gradually rises to the position of the grid plate 9, and the floating foreign matter in the sewage is blocked by the grid slots of the grid plate 9. During the process of gradually rising of the liquid level, the floating impurities are guided by the grid plate 9 into the position of the slag guide groove 5, so that the top layer of sewage drives the floating impurities out through the slag guide groove 5 for collection. The sewage passing through the grid plate 9 enters the inside of the zigzag plate 12, and the zigzag plate 12 blocks the sewage passing through the grid plate 9 from the vertical surface away from the top plate 13, and makes it flow downward from the bottom of the flow guide plate 11 to the air guide mechanism 3 area.

[0046] After the sewage reaches the top of the air guide mechanism 3, the air guided by the air pump 7 is guided into the flow distribution pipe 305 through the communication pipe 304, and then the gas is guided into the air guide chamber 306 through the fixed pipe 309, so that the air enters above the inner sliding disc 308. At this time, the air holes of the air guide chamber 306 are blocked by the top block 311, and the gas cannot be discharged from the air holes of the air guide chamber 306. With the continuous introduction of the gas, the air pressure at the top of the inner sliding disc 308 gradually increases, so that the inner sliding disc 308 compresses the elastic gasket ring 310 under pressure, and the inner sliding disc 308 drives the top block 311 to move downward in the air guide chamber 306, opens the air holes of the air guide chamber 306, and makes the high-pressure gas in the inside quickly discharged from the air holes. At the same time, in the process of discharging, the upwelling gas drives the sewage to flow, so that the impeller 303 rotates, and cooperates with the rapid discharge of the gas to increase the diffusion range of the gas. At the same time, the discharged gas rises upwards in the form of bubbles in the sewage, and in the process of rising upwards, the bubbles adsorb oil droplets or flocculation and carry them to the water surface, so that the oil in the sewage is concentrated at the liquid level.

[0047] In the flow dividing mechanism 2, the gas is discharged through the through slot of the top groove plate 21, when the sewage liquid level is low, the sewage does not contact the side float 24, and the buoyancy cannot push the top groove plate 21 to move upwards in the inside of the purification tank 1, at this time, the bottom of the side sealing plate 22 contacts the inner wall of the purification tank 1, limiting the sewage flow to the side of the side sealing plate 22 close to the water outlet pipe 8, at the same time, the side pad strip 25 contacts the outside of the fixed frame 301, assisting the side sealing plate 22 to block the sewage flow, with the rising of the liquid level, after contacting the side float 24, the side float 24 generates buoyancy, pushing the top groove plate 21 to move upwards, opening the path of the oil flow at the liquid level position to the oil guiding groove 6, at the same time, the side pad strip 25 is separated from the contact with the fixed frame 301, the side sealing plate 22 opens the path of the bottom layer sewage to the water outlet pipe 8, so that the bottom layer sewage can be guided out by the water outlet pipe 8.

[0048] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0049] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sewage purification device for treating wastewater in a steel plant, characterized in that: Include: purification tank (1), one end of the purification tank (1) is fixedly installed with water inlet pipe (4), the other end of the purification tank (1) is fixedly installed with water outlet pipe (8), and the outer side of the purification tank (1) is fixedly installed with oil guide groove (6) and slag guide groove (5) on the top of the side connected with water inlet pipe (4); Air guide mechanism (3), the air guide mechanism (3) is installed on the bottom of the inner wall of the purification tank (1), the outer side of the purification tank (1) is fixedly installed with air pump (7), and the air outlet of the air pump (7) is communicated with the air guide mechanism (3) through pipeline; Flow dividing mechanism (2), the flow dividing mechanism (2) is installed in the purification tank (1), the flow dividing mechanism (2) is located directly above the air guide mechanism (3), and the flow dividing mechanism (2) corresponds to the oil guide groove (6); The bottom of the inner wall of the purification tank (1) is fixedly installed with slag collecting groove (10) near one side of the water inlet pipe (4), the top of the slag collecting groove (10) is fixedly installed with grating plate (9), the top end of the grating plate (9) is inclined to the direction of the water inlet pipe (4), and the outer side of the grating plate (9) is uniformly provided with grating groove, the top of the grating plate (9) is fixedly installed with top plate (13), the side of the top plate (13) away from the water inlet pipe (4) is fixedly installed with zigzag plate (12), one end of the zigzag plate (12) away from the top plate (13) is vertically zigzag downward, and the bottom end of the zigzag plate (12) is fixedly installed with flow guide plate (11), one end of the flow guide plate (11) away from the zigzag plate (12) is inclined downward to one side of the air guide mechanism (3).

2. A sewage purification apparatus for treating sewage from a steelworks according to claim 1, characterized in that: The top of the top plate (13) is flush with the top of the purification tank (1), the slag guide groove (5) is between the top plate (13) and the water inlet pipe (4), and the water inlet pipe (4) is installed downwardly inclined near one end of the purification tank (1).

3. A sewage purification apparatus for treating sewage of a steel mill according to claim 1, characterized in that: The flow dividing mechanism (2) includes top groove plate (21), the top groove plate (21) is slidingly installed in the purification tank (1), the position of the top groove plate (21) corresponds to the oil guide groove (6), and the top groove plate (21) is located directly above the air guide mechanism (3).

4. A sewage purification apparatus for treating sewage from a steelworks according to claim 3, characterized in that: The center position of the top of the top groove plate (21) is provided with inclined surface groove, one end of the inclined surface groove near the oil guide groove (6) is inclined downward, the inclined surface groove of the top groove plate (21) is uniformly provided with through groove, and the bottom of the top groove plate (21) is fixedly installed with side floating block (24), the side floating block (24) is symmetrically installed along the axis center position of the top groove plate (21), and the side floating block (24) is a hollow structure.

5. A sewage purification apparatus for treating sewage from a steelworks according to claim 4, characterized in that: The side of the top groove plate (21) near the water outlet pipe (8) is fixedly installed with side sealing plate (22), the side sealing plate (22) is located between the air guide mechanism (3) and the water outlet pipe (8), and the bottom of the side sealing plate (22) is tightly attached to the bottom of the inner wall of the purification tank (1).

6. A sewage purification apparatus for sewage treatment of a steelworks according to claim 5, characterized in that: The side sealing plate (22) is fixedly installed with an inclined sealing plate (23) near one side of the air guide mechanism (3), one end of the inclined sealing plate (23) away from the side sealing plate (22) is inclined downward to the side of the air guide mechanism (3), and the one end of the inclined sealing plate (23) away from the side sealing plate (22) is fixedly installed with a side cushion strip (25).

7. A sewage purification apparatus for sewage treatment of a steelworks according to claim 6, characterized in that: The air guide mechanism (3) comprises a fixed frame (301) fixed to the bottom of the inner wall of the purification tank (1), and the fixed frame (301) is located directly below the top groove plate (21), the side of the fixed frame (301) close to the water outlet pipe (8) is closely attached to the outside of the side cushion strip (25), and the top of the inner wall of the fixed frame (301) is fixedly installed with a circular groove plate (302).

8. A sewage purification apparatus for sewage treatment of a steelworks according to claim 7, characterized in that: The top of the circular groove plate (302) is uniformly provided with a circular groove, and the circular groove plate (302) is fixedly installed with an air guide bin (306) at the circular groove, the top of the air guide bin (306) is uniformly provided with an air hole, the bottom of the air guide bin (306) is fixedly installed with a fixed pipe (309), the bottom of the fixed pipe (309) is fixedly installed with a shunt pipe (305), one end of the shunt pipe (305) is fixedly installed with a communication pipe (304), the end of the communication pipe (304) away from the shunt pipe (305) penetrates through the fixed frame (301) and extends to the outside of the purification tank (1), and the air outlet end of the air pump (7) is connected with the communication pipe (304) through a pipeline.

9. A sewage purification apparatus for sewage treatment of a steelworks according to claim 8, characterized in that: The top end of the fixed pipe (309) penetrates through the air guide bin (306) and extends to the inside, the center of the top of the air guide bin (306) is fixedly installed with a shaft block (307), the outer side of the shaft block (307) is rotatably installed with an impeller (303), the outer side of the fixed pipe (309) is slidably installed with an inner sliding disc (308), and the inner sliding disc (308) is located in the inside of the air guide bin (306).

10. A sewage purification apparatus for sewage treatment of a steelworks according to claim 9, characterized in that: The top of the inner sliding disc (308) is fixedly installed with a top block (311), the top block (311) is uniformly installed on the top of the inner sliding disc (308), and the top block (311) corresponds to the air hole of the air guide bin (306) one by one, and the bottom of the inner sliding disc (308) and the inner wall of the air guide bin (306) are fixedly installed with an elastic gasket ring (310).

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