Automatic oil removal device for inclined plate sedimentation tank

Abstract

The present application relates to a kind of automatic oil removal devices of inclined plate sedimentation tank, including the water outlet groove side of inclined plate sedimentation tank is equipped with oil baffle, overflow plate and water collecting tank in water flow direction in sequence, the bottom edge of the oil baffle is 150~200mm higher than the water level in the inclined plate sedimentation tank;First opening is opened on the oil baffle face of the oil baffle, one end of overflow tank is connected with the first opening, the other end of the overflow tank extends the pool wall of the inclined plate sedimentation tank, first overflow oil plate is equipped on overflow tank, and first overflow oil plate is used to overflow to overflow oil tank by first overflow oil plate, and a small amount of overflow water discharged from the water outlet groove side and a large amount of oil stain blocked by oil baffle are overflowed to overflow oil tank, water and oil stain in the overflow oil tank are discharged into overflow oil tank through the second opening simultaneously.This application has simple structure, and high oil removal rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment, and relates to a tilted plate automatic oil removal device for continuous casting turbid circulating water treatment. BACKGROUND

[0002] Currently, only the horizontal flow pool is provided with an oil scraping machine and an oil skimmer in the industry, the oil scraping machine is driven by a cycloidal pin wheel speed reducer, the oil stains on the water surface are scraped to one end of the horizontal flow pool first, and then the oil skimmer is used to skim the oil stains on the water surface to a waste oil bucket for waste treatment; at the same time, the horizontal flow pool is gradually replaced by other sedimentation devices due to large floor area and poor sedimentation effect, and the oil removal equipment stirs the water body when scraping and skimming the oil, which makes the water quality worse and cannot achieve the purpose of good oil removal.

[0003] Due to the above reasons, the horizontal flow sedimentation pool is no longer used in the continuous casting turbid circulating water treatment process, and the tilted plate sedimentation pool with small floor area and good sedimentation effect is used. However, the tilted plate sedimentation pool does not have oil removal equipment and facilities, so that the waste oil and dirt floating on the water surface directly enter the next process from the tilted plate sedimentation pool, thereby causing the continuous casting nozzle to be blocked by the oil mud and affecting the quality of the casting blank and the stable operation of the production. SUMMARY

[0004] The present application aims to avoid the shortcomings of the prior art and provide a tilted plate sedimentation pool automatic oil removal device which is simple in mechanism and good in oil removal effect.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a tilted plate sedimentation pool automatic oil removal device, comprising a water outlet groove on one side of the tilted plate sedimentation pool, a baffle plate, an overflow plate and a water collecting pool arranged in sequence along the water flow direction, water overflowing from the overflow plate enters the water collecting pool, and clean water is discharged from a clean water outlet arranged at the bottom of the water collecting pool to the next water purification process.

[0006] The baffle plate is extended and arranged between the opposite pool walls of the tilted plate sedimentation pool and is arranged vertically to the horizontal plane, the baffle plate surface of the baffle plate is perpendicular to the water flow direction, the baffle plate surface is used to block the oil stains on the pool surface on the baffle plate surface, the top edge of the baffle plate surface is exposed to the water surface in the pool and is 150-200mm higher than the water level in the tilted plate sedimentation pool, and the bottom edge of the baffle plate surface is immersed in the water surface in the pool and is 150-200mm lower than the water level in the tilted plate sedimentation pool.

[0007] The first opening is formed on the baffle plate surface of the baffle plate, one end of the overflow groove is connected with the first opening, the other end of the overflow groove extends out of the pool wall of the inclined plate sedimentation tank, and a second opening is formed on the pool wall. A first oil overflow plate is arranged at the inlet of the overflow groove. The first oil overflow plate is used for overflowing the small amount of overflow water discharged from one side of the water outlet groove and the large amount of oil stains blocked by the baffle plate to the overflow groove through the first oil overflow plate. The water and oil stains entering the overflow groove are discharged into the oil-water mixing tank through the second opening.

[0008] In order to block the oil-containing floating objects on the water surface outside the baffle plate, ensure that the oil stains cannot flow into the clean water area, and finally be completely discharged by the overflow groove, the baffle plate is partially exposed above the water level and partially immersed below the water level, and the distance should reach 150-200 mm. In this way, under the condition of the lowest cost, even if the water flow is large, the oil substances will not be carried over the baffle plate by the water, so that the baffle plate can well block the oil floating objects from entering the next water purification process. If the distance is too large, the cost is increased, and the overall structure of the inclined plate sedimentation tank is affected, so it is unnecessary to be too large.

[0009] Further, a pair of guide plates are arranged on the baffle plate on both sides of the first opening. The guide plates are also arranged vertically to the horizontal plane. An inclined angle is formed between the guide plate surface of the guide plate and the baffle plate surface. One end of the guide plate is fixed on the baffle plate surface of the baffle plate. The other end of the pair of guide plates is fixed on the pool wall of the inclined plate sedimentation tank on both sides of the baffle plate. The pair of guide plates are used for concentrating and guiding the large amount of oil stains on the pool surface to the first opening through the guide plate surface.

[0010] Further, the inclined angle between the guide plate surface and the baffle plate surface is 15-30 degrees. The arrangement of the guide plate appropriately increases the oil substance gathering area, so as to flow out along the guide plate and achieve the purpose of oil removal.

[0011] Further, the distance between the top edge and the bottom edge of the guide plate surface of the guide plate is equal to the distance between the top edge and the bottom edge of the baffle plate. The guide plate and the baffle plate are closely matched, so that the guide plate also has the function of the baffle plate. Even if the water flow is large, the oil stains on the water surface will not be carried over the guide plate by the water, and will be smoothly guided into the oil overflow groove.

[0012] Further, one end of the pair of guide plates is fixed on the baffle plate on both sides of the first opening. The other end of the guide plate and both ends of the baffle plate are fixedly arranged on the opposite inner pool walls of the inclined plate sedimentation tank.

[0013] Further, the first oil overflow plate is arranged at a position lower than the water level in the inclined plate sedimentation tank by 10-20 mm.

[0014] Further, the water outlet end of the overflow tank is provided with a second oil overflow plate, which is used for secondary oil overflow when the water level rises, preventing the water quantity from being too large due to oil pollution.

[0015] Further, the first opening is located at the center of the oil baffle, and the width of the first opening is 200-300 mm. According to the actual amount of floating oil pollution in each inclined plate sedimentation tank, if the first opening is too large, it will increase the overflow area and be not conducive to the collection of floating oil pollution, resulting in a large amount of water and waste of water resources. If the first opening is too small, the floating oil pollution on the water surface cannot be discharged in time and the oil removal effect cannot be achieved.

[0016] Further, a spiral sludge discharging machine is arranged at the bottom of the inclined plate sedimentation tank for discharging sludge accumulated at the bottom of the tank, and the sludge discharging port of the spiral sludge discharging machine is arranged at the bottom of the tank wall of the inclined plate sedimentation tank.

[0017] Further, the inclined plate sedimentation tank is at least two, and the two inclined plate sedimentation tanks are arranged in the same direction and side by side.

[0018] The beneficial effects of the present application are: the present application is by installing an oil baffle on one side of the inclined plate sedimentation tank outlet tank, preventing waste oil and dirt from overflowing into the system, so that the waste oil and dirt are blocked on the water surface. At the same time, in order to concentrate oil removal, a guide plate is installed on the oil baffle, and an oil overflow tank is installed at the center of the oil baffle. Through the self-flowing mode of the oil baffle which is slightly higher than the overflow plate of the inclined plate tank, the waste oil and dirt on the water surface continuously flow into the oil collection tank, so that all the suspended waste oil and dirt in the water are removed, effectively reducing the oil content in the water, and the continuous use of the continuous casting nozzle is no longer blocked by oil sludge.

[0019] The present application provides a device which is convenient to operate, simple and easy to implement, and can remove floating oil on the water surface with an effect of 100%. The water quantity taken away is much smaller than the sewage quantity, and no mechanical adjusting device, any power and starting energy consumption are needed, which is low in cost and remarkable in effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a top view structural schematic diagram of the present application;

[0021] Figure 2 is an AA cross-sectional structural schematic diagram of the present application. Figure 1

[0022] In the figure: 1, oil baffle; 11, first opening; 12, second opening; 2, overflow plate; 3, clear water area; 4, clear water outlet; 5, oil overflow tank; 51, first oil overflow plate; 52, second oil overflow plate; 6, oil overflow tank; 7, guide plate. DETAILED DESCRIPTION

[0023] ​The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0024] Example 1, such as Figures 1-2 As shown, an automatic oil removal device for an inclined plate sedimentation tank includes an oil baffle plate 1, an overflow plate 2, and a clear water zone 3 arranged sequentially along the water flow direction on one side of the outlet trough of the inclined plate sedimentation tank. Water overflowing from the overflow plate 2 enters the clear water zone 3 and is discharged to the next water purification process through the clear water outlet 4 located at the bottom of the clear water zone 3. Figure 1 The inclined plate sedimentation tanks described herein are four in number, with each pair of inclined plate sedimentation tanks arranged in the same direction and side by side.

[0025] The oil baffle 1 extends between the opposite walls of the inclined plate sedimentation tank and is perpendicular to the horizontal plane. The oil baffle surface of the oil baffle 1 is perpendicular to the water flow direction and is used to block oil on the tank surface. The top edge of the oil baffle surface protrudes from the water surface in the tank and is 150-200mm higher than the water level in the inclined plate sedimentation tank. The bottom edge of the oil baffle surface is immersed in the water surface in the tank and is 150-200mm lower than the water level in the inclined plate sedimentation tank.

[0026] A first opening 11 is provided on the surface of the oil baffle plate 1. One end of the oil overflow trough 5 is connected to the first opening 11, and the other end of the oil overflow trough 5 extends out of the wall of the inclined plate sedimentation tank, forming a second opening 12 on the wall. A first oil overflow plate 51 is provided at the inlet of the overflow trough 5. The first oil overflow plate 51 is used to allow a small amount of overflow water discharged from one side of the outlet trough and a large amount of oil blocked by the oil baffle plate 1 to overflow into the oil overflow trough 5. The water and oil entering the oil overflow trough 5 are discharged into the main oil overflow trough 6 through the second opening 12. The main oil overflow trough 6 is located on the outer side of the tank wall at the second opening 12. A second oil overflow plate 52 is provided at the outlet end of the oil overflow trough. The second oil overflow plate 52 is used for secondary oil overflow when the water level rises, preventing excessive water carryover from the oil. The first oil overflow plate 51 is positioned 10-20 mm lower than the water level in the inclined plate sedimentation tank. The first opening 11 is located at the center of the oil baffle 1, and the width of the first opening 11 is 200-300mm.

[0027] One end of the pair of flow guides 7 is fixed on the oil baffle 1 on both sides of the first opening 11; the other end of the flow guide 7 and the two ends of the oil baffle 1 are fixed on the opposite pool inner walls of the inclined plate sedimentation tank. The flow guide 7 is also arranged perpendicularly to the horizontal plane, and the flow guide surface of the flow guide 7 and the oil baffle surface of the oil baffle 1 have an inclined angle, which is 15-30 degrees. One end of the flow guide 7 is fixed on the oil baffle surface of the oil baffle 1, and the other end of the pair of flow guides 7 is fixed on the inclined plate sedimentation tank pool walls on both sides of the oil baffle 1. The pair of flow guides 7 is used to concentrate and guide the large amount of oil stains on the pool surface to the first opening 11 through the flow guide surface. The distance between the top edge and the bottom edge of the flow guide surface of the flow guide 7 is equal to the distance between the top edge and the bottom edge of the oil baffle surface of the oil baffle 1.

[0028] A spiral sludge conveyor 8 for discharging the sludge accumulated on the pool bottom is arranged on the pool bottom of the inclined plate sedimentation tank, and the sludge discharge port of the spiral sludge conveyor 8 is arranged in the sludge discharge area of the inclined plate sedimentation tank.

[0029] The continuous casting turbid circulating water system has the problem of waste oil pollution, which seriously affects the water quality of the system. The most important task of the inclined plate sedimentation tank is to purify and remove oil from the water quality. For many years since the operation, the oil stains on the water surface have been manually skimmed, and special tools are needed to remove the oil stains floating on the water surface. Due to the inability to remove the oil stains in time, the water quality of the secondary cooling is affected, and the water quality is difficult to guarantee. In addition, when skimming the oil, the water body may be stirred and mixed, causing the oil stains to enter the pool and making the water quality worse.

[0030] The automatic oil removal device has achieved good results:

[0031] 1. The manpower and material resources are saved. Originally, a person was needed to clean the oil stains on the water surface every shift, and it took 40 minutes to clean one inclined plate sedimentation tank and 160 minutes to clean four inclined plate sedimentation tanks. Now, only 20 minutes is needed for simple maintenance and dredging every shift to ensure normal operation. Special fishing tools and containers are no longer needed to clean the oil stains after the use of the present application, and the inclined plate sedimentation tank can run well without any tools.

[0032] 2. The oil removal effect of the present application is very obvious, and there are basically no floating oil pollutants on the water surface of the inclined plate pool. The content of suspended matter in the water is 50-70 mg per 1000 ml, and after the use of the present application, the content of suspended matter in the water is 10-30 mg per 1000 ml, which effectively guarantees the water quality of the continuous casting turbid circulating water, especially the secondary cooling water, and greatly improves the quality and yield of the continuous casting machine.

[0033] 3. After using the scheme, the number of stoppage due to nozzle blockage is reduced, twice a month, 2 hours each time, so 4 hours of production can be increased each month, 48 hours each year, 6000 tons of billets are produced, a continuous casting machine can create more than 20 million yuan of output value and more than 1 million yuan of benefits each year.

[0034] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic oil removal device for an inclined plate sedimentation tank, characterized in that, The oil baffle (1), the overflow plate (2) and the clear water area (3) are arranged in sequence along the water flow direction on the side of the outlet tank of the inclined plate sedimentation tank, the water overflowing from the overflow plate (2) enters the clear water area (3), and is discharged from the clear water outlet (4) arranged at the bottom of the clear water area (3) to the next water purification process; The oil baffle (1) is arranged between the opposite tank walls of the inclined plate sedimentation tank and is arranged perpendicularly to the horizontal plane, the oil baffle face of the oil baffle (1) is perpendicular to the water flow direction, and the oil baffle face is used for blocking the oil stains on the tank surface on the oil baffle face, the top edge of the oil baffle face is exposed to the water surface in the tank and is 150-200 mm higher than the water level in the inclined plate sedimentation tank, and the bottom edge of the oil baffle face is immersed in the water surface in the tank and is 150-200 mm lower than the water level in the inclined plate sedimentation tank; A first opening (11) is formed in the oil baffle face of the oil baffle (1), one end of the oil overflow tank (5) is connected with the first opening (11), the other end of the oil overflow tank (5) extends out of the tank wall of the inclined plate sedimentation tank and forms a second opening (12) on the tank wall, a first oil overflow plate (51) is arranged at the inlet of the oil overflow tank (5), the first oil overflow plate (51) is used for overflowing the small amount of overflow water discharged from the side of the outlet tank and the large amount of oil stains blocked by the oil baffle (1) to the oil overflow tank (5) through the first oil overflow plate (51), the water and oil stains entering the oil overflow tank (5) are discharged into the oil overflow tank (6) through the second opening (12), and the oil overflow tank (6) is arranged outside the tank wall at the second opening (12); A pair of guide plates (7) are arranged on the oil baffle (1) on both sides of the first opening (11), the guide plates (7) are also arranged perpendicularly to the horizontal plane, the guide plate face of the guide plate (7) has an inclined angle with the oil baffle face, one end of the guide plate (7) is fixed on the oil baffle face of the oil baffle (1), the other end of the pair of guide plates (7) is respectively fixed on the tank wall of the inclined plate sedimentation tank on both sides of the oil baffle (1), and the pair of guide plates (7) are used for guiding the large amount of oil stains on the tank surface to the first opening (11) through the guide plate face of the guide plate (7); A second oil overflow plate (52) is arranged on the water outlet end of the oil overflow tank (5), the second oil overflow plate (52) is used for secondary oil overflow when the water level rises, and prevents the water amount carried by the oil stains from being too large; The inclined plate sedimentation tank is at least two, and the two inclined plate sedimentation tanks are arranged in the same direction and side by side.

2. The automatic oil removal device for the inclined plate sedimentation tank according to claim 1, characterized by The inclined angle between the guide plate face and the oil baffle face is 15-30 degrees.

3. The automatic oil removal device for the inclined plate sedimentation tank according to claim 1, characterized by The distance between the top edge and the bottom edge of the guide plate face of the guide plate (7) is equal to the distance between the top edge and the bottom edge of the oil baffle face of the oil baffle (1).

4. The automatic oil removal device for the inclined plate sedimentation tank according to claim 1, characterized by One end of the pair of guide plates (7) is fixed on the oil baffle (1) on both sides of the first opening (11), and the other end of the guide plate (7) and both ends of the oil baffle (1) are fixed on the opposite inner tank walls of the inclined plate sedimentation tank.

5. The automatic oil removal device for the inclined plate sedimentation tank according to claim 1, characterized by The first oil overflow plate (51) is arranged at a position 10-20 mm lower than the water level in the inclined plate sedimentation tank.

6. The automatic oil removal device for the inclined plate sedimentation tank according to claim 1, wherein The first opening (11) is located at the center of the oil baffle (1), and the width of the first opening (11) is 200-300 mm.

7. The automatic oil removal device for the inclined plate sedimentation tank according to claim 1, characterized by A spiral sludge conveyor (8) for discharging the sludge accumulated at the bottom of the inclined plate sedimentation tank is arranged at the bottom of the inclined plate sedimentation tank, and the sludge discharge port of the spiral sludge conveyor (8) is arranged at the bottom of the tank wall of the inclined plate sedimentation tank.

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