Split type floating oil recovery device for sewage treatment

Abstract

The utility model provides a split type oil slick recovery device for sewage treatment, which comprises an oil slick collector (5), an oil slick recovery box (3) and an oil pump (9), an oil slick outflow pipe (5-13) on the oil slick collector (5) is communicated with an oil inlet pipe (11) on the oil pump (9) through a first oil discharge pipe (4), the first oil discharge pipe (4) is a hose, a second oil discharge pipe (12) on the oil pump (9) is communicated with the upper part of the oil slick recovery box (3), and the second oil discharge pipe (12) is communicated with the upper part of the oil slick recovery box (3). And a drain pipe (2) is arranged at the lower part of the floating oil recovery box (3). The utility model has the beneficial effects of reasonable structural design and more convenience in use; the floating oil recovery effect is good.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection equipment, in particular to a split type floating oil recovery device for sewage treatment. Background Art

[0002] Floating oil recovery is an important part of sewage treatment. Usually, a floating oil recovery device is installed in the sewage treatment pool of a sewage treatment plant. At present, the sewage treatment pool used in sewage treatment plants has a large flow, a large volume, a large pool depth, a large amount of floating oil, and a large water level fluctuation. The floating oil recovery device in the existing technology cannot match the treatment capacity of the sewage treatment pool well. Summary of the invention

[0003] The problem to be solved by the utility model is to provide a split type floating oil recovery device for sewage treatment, which overcomes the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a split type floating oil recovery device for sewage treatment, including a floating oil collector, a floating oil recovery tank and an oil pump, the floating oil outflow pipe on the floating oil collector is connected to the oil inlet pipe on the oil pump through a first oil discharge pipe, the first oil discharge pipe is a hose, the second oil discharge pipe on the oil pump is connected to the upper part of the floating oil recovery tank, and the lower part of the floating oil recovery tank has a drain pipe.

[0005] When the above structure is in use, the floating oil collector is set in the sewage pool, the drain pipe on the floating oil recovery tank is connected to the sewage pool, and the wastewater is separated from the oil by the primary oil-water separation of the floating oil collector and the secondary oil-water separation of the floating oil recovery tank. Finally, the floating oil in the sewage pool is collected in the floating oil recovery tank, and the sewage at the bottom of the floating oil recovery tank is returned to the sewage pool through the drain pipe.

[0006] Optionally, the outlet of the second oil drain pipe is located at the bottom of the floating oil recovery tank.

[0007] Optionally, a recovery oil tank is further included, wherein the upper portion of the floating oil recovery tank is provided with an oil overflow pipe, and the oil overflow pipe is connected to the top of the recovery oil tank. The setting of the recovery oil tank can further collect and purify the floating oil in the floating oil recovery tank.

[0008] Optionally, the oil recovery tank is divided into an oil tank and a water tank which are independent of each other, the outlet of the second oil drain pipe is located in the oil tank, the oil tank and the water tank are connected through an overflow pipe, the water inlet of the overflow pipe is located near the bottom of the oil tank, the water outlet is located at the upper part of the water tank, and the drain pipe is located at the lower part of the water tank. The provision of the water tank can further stratify the oil-water mixture in the oil recovery tank and collect them separately, so that the oil content of the water discharged through the drain pipe is lower.

[0009] Optionally, the floating oil collector includes a separation cylinder, a plurality of floats evenly distributed around the separation cylinder, a motor and a propeller, the float being fixed to the outside of the separation cylinder by a float bracket, the upper part of the separation cylinder having a filter screen, a concave guide plate being provided below the filter screen, the propeller passing through the hole in the center of the concave guide plate and penetrating into the lower part of the separation cylinder, the motor being fixed to the top of the separation cylinder by a motor bracket, the floating oil outflow pipe being fixed to the concave guide plate, the floating oil outflow pipe being connected to the fluid below the concave guide plate, and the outlet of the floating oil outflow pipe extending out from the top of the separation cylinder.

[0010] Optionally, the float bracket has an adjusting screw which corresponds one-to-one with the float and can adjust the position of the float along the axial direction of the separation barrel.

[0011] Optionally, a baffle is provided at the bottom of the separation cylinder, and the baffle faces the outlet of the propeller.

[0012] Optionally, the bottom of the separation cylinder has a bottom plate, and the bottom plate extends toward the outside of the separation cylinder.

[0013] Optionally, a protective cover is provided above the motor.

[0014] Optionally, a control cabinet is also included, and the control cabinet is electrically connected to the floating oil collector and the oil pump.

[0015] The utility model has the advantages and positive effects of reasonable structural design, more convenient use and good floating oil recovery effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the planar structure of a specific implementation method of the utility model;

[0017] Figure 2 yes Figure 1 Side view of

[0018] Figure 3 yes Figure 1 A top view of

[0019] Figure 4 yes Figure 1 Schematic diagram of local structure plan;

[0020] Figure 5 yes Figure 4 A top view of

[0021] Figure 6 yes Figure 1 A cross-sectional structural plan view of the medium oil floating collector;

[0022] Figure 7 yes Figure 6 A top view of

[0023] In the figure: 1. sewage pool; 2. drainage pipe; 3. floating oil recovery tank; 4. first oil row pipe; 5. floating oil collector; 5-1. protective cover; 5-2. concave guide plate; 5-3. flow pusher; 5-4. adjusting screw; 5-5. baffle bracket; 5-6. baffle; 5-7. flow pusher blade; 5-8. motor bracket; 5-9. motor; 5-10. float; 5-11. float bracket; 5-12. filter; 5-13. floating oil outflow pipe; 5-14. bottom plate; 6. oil recovery tank; 7. oil overflow pipe; 8. control cabinet; 9. oil pump; 10. overflow pipe; 11. oil inlet pipe; 12. second oil row pipe; 13. water tank. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

[0025] As shown in the figure, the utility model provides a split type floating oil recovery device for sewage treatment, including a floating oil collector 5, a floating oil recovery tank 3, a recovery oil tank 6 and an oil pump 9, the floating oil outflow pipe 5-13 on the floating oil collector 5 is connected with the oil inlet pipe 11 on the oil pump 9 through a first oil discharge pipe 4, wherein the first oil discharge pipe 4 is a hose, and the selection of the hose will not affect the floating oil collector 5 in the sewage tank 1 Up and down floating, the second oil discharge pipe 12 on the oil pump 9 is connected to the upper part of the floating oil recovery tank 3, and the lower part of the floating oil recovery tank 3 has a drain pipe 2.

[0026] The outlet of the second oil drain pipe 12 is located at the bottom of the floating oil recovery tank 3 .

[0027] An oil overflow pipe 7 is provided at the upper portion of the floating oil recovery tank 3 , and the oil overflow pipe 7 is communicated with the top of the oil recovery tank 6 .

[0028] The floating oil recovery tank 3 is divided into an independent oil tank and water tank 13. The outlet of the second oil discharge pipe 12 is located in the oil tank. The oil tank and the water tank 13 are connected through an overflow pipe 10. The water inlet of the overflow pipe 10 is located near the bottom of the oil tank, and the water outlet is located at the upper part of the water tank 13. The drain pipe 2 is located at the lower part of the water tank 13.

[0029] The floating oil collector 5 includes a separation cylinder, a plurality of floats 5-10 evenly distributed around the separation cylinder, a motor 5-9 and a propeller 5-3. The float 5-10 is fixed to the outside of the separation cylinder by a float bracket 5-11. A filter screen 5-12 is provided at the upper part of the separation cylinder, and a concave guide plate 5-2 is provided below the filter screen 5-12. The propeller 5-3 penetrates into the lower part of the separation cylinder through the hole in the center of the concave guide plate 5-2. The motor 5-9 is fixed to the top of the separation cylinder by a motor bracket. The floating oil outflow pipe 5-13 is fixed on the concave guide plate 5-2. The floating oil outflow pipe 5-13 is connected to the fluid below the concave guide plate 5-2, and the outlet of the floating oil outflow pipe 5-13 extends out of the top of the separation cylinder.

[0030] The float bracket 5-11 has an adjusting screw 5-4 which corresponds one-to-one with the float 5-10 and can adjust the position of the float 5-10 along the axial direction of the separation cylinder.

[0031] A baffle 5-6 is provided at the bottom of the separation cylinder, and the baffle 5-6 faces the outlet of the propeller 5-3.

[0032] The bottom of the separation cylinder has a bottom plate 5-14, and the bottom plate 5-14 extends toward the outside of the separation cylinder to increase the contact area between the separation cylinder and the bottom of the sewage tank 1.

[0033] A protective cover 5-1 is provided above the motor 5-9.

[0034] The device further comprises a control cabinet 8 , which is electrically connected to the floating oil collector 5 and the oil pump 9 .

[0035] When the above structure is in use, the oil collector 5 is placed in the sewage pool 1, the oil collector 3 is arranged outside the sewage pool 1, the oil recovery tank 6 and the oil pump 9 are both located outside the oil collector tank 3, and the drain pipe 2 is connected to the top of the sewage pool 1, wherein the oil collector 5 can go five to eight meters deep into the sewage pool 1. The collection range is 30-60 square meters, and the oil collector 5 can float up and down in the sewage pool 1. The bottom of the oil collector 5 has a bottom plate 5-14 for increasing the contact area between the bottom of the oil collector 5 and the bottom of the sewage pool 1. The bottom plate 5-14 of this embodiment is four brackets. When there is no water in the sewage pool, the oil collector 5 can rest steadily at the bottom of the sewage pool 1 by relying on its own weight and the four brackets. When there is water in the sewage pool 1, as the water level changes, the oil collector 5 floats up and down with the water level by relying on the four floats 5-10 evenly distributed around it. The evenly distributed floats 5-10 make the oil collector 5 float up and down while keeping stable. The height of the float 5-10 on the float bracket 5-11 is adjusted by adjusting the screw 5-4 to ensure that the floating oil on the water surface can just pass through the filter screen 5-12 and flow into the floating oil collector 5. The flow pusher 5-3 in the floating oil collector 5 will discharge the oil-water mixture that enters the separation cylinder through the filter screen 5-12 downward at a high speed. After the oil-water mixture passes through the flow pusher 5-3 and hits the baffle 5-6, the speed will be greatly reduced, and the oil-water separation will be formed. The floating oil has a lighter specific gravity and will be discharged upward in the separation cylinder of the floating oil collector 5. The oil-water mixture in the oil tank is stratified again, and the water in the lower layer is discharged into the water tank through the overflow pipe 10, and finally flows back to the sewage pool through the drain pipe 2, and the floating oil on the upper layer enters the recovery tank 6 through the overflow pipe 7.

[0036] The working process of the above structure is as follows: 1. The sewage pool 1 is filled with water, the water level in the pool rises, and the residual oil floats on the water surface (this is the primary separation of oil and water); 2. The floating oil on the water surface flows into the separation cylinder in the floating oil collector 5 through the filter screen 5-12 in the floating oil collector 5 (by adjusting the height of the float 5-10, the height of the filter screen 5-12 is just the height of the floating oil layer, this is the secondary separation of oil and water); 3. After the floating oil and water flowing into the floating oil collector 5 pass through the flow pusher 5-3 and the baffle 5-6, the floating oil rises to the upper part of the separation cylinder of the floating oil collector 5 (this is the third separation of oil and water), and is discharged into the floating oil recovery tank 3 by the first oil discharge pipe 4 and the oil pump 9; 4. After the floating oil is pumped into the floating oil recovery tank 3 outside the sewage pool 1 by the oil pump 9, the floating oil flows into the recovery oil barrel 6 from the oil overflow pipe 7 on the floating oil recovery tank 3, and the residual water is discharged into the sewage pool 1 again through the drain pipe 2 (this is the fourth separation of oil and water), forming the final recovery of the floating oil.

[0037] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A split type floating oil recovery device for sewage treatment, characterized in that: The invention comprises a floating oil collector (5), a floating oil recovery tank (3) and an oil pump (9); the floating oil outflow pipe (5-13) on the floating oil collector (5) is connected to the oil inlet pipe (11) on the oil pump (9) via a first oil discharge pipe (4); the first oil discharge pipe (4) is a hose; the second oil discharge pipe (12) on the oil pump (9) is connected to the upper part of the floating oil recovery tank (3); and the lower part of the floating oil recovery tank (3) is provided with a drainage pipe (2).

2. The split type floating oil recovery device for sewage treatment according to claim 1 is characterized in that: The outlet of the second oil drain pipe (12) is located at the bottom of the floating oil recovery tank (3).

3. The split type floating oil recovery device for sewage treatment according to claim 2 is characterized in that: It also comprises an oil recovery tank (6), the upper part of the floating oil recovery tank (3) is provided with an oil overflow pipe (7), and the oil overflow pipe (7) is connected with the top of the oil recovery tank (6).

4. The split type floating oil recovery device for sewage treatment according to claim 1 is characterized in that: The floating oil recovery tank (3) is divided into an oil tank and a water tank (13) which are independent of each other. The outlet of the second oil drain pipe (12) is located in the oil tank. The oil tank and the water tank (13) are connected via an overflow pipe (10). The water inlet of the overflow pipe (10) is located near the bottom of the oil tank, and the water outlet is located at the upper part of the water tank (13). The drain pipe (2) is located at the lower part of the water tank (13).

5. The split type floating oil recovery device for sewage treatment according to any one of claims 1 to 4, characterized in that: The floating oil collector (5) comprises a separation cylinder, a plurality of floats (5-10) evenly distributed around the separation cylinder, a motor (5-9) and a propeller (5-3); the float (5-10) is fixed to the outside of the separation cylinder through a float bracket (5-11); a filter screen (5-12) is provided at the upper part of the separation cylinder, a concave guide plate (5-2) is provided below the filter screen (5-12); the propeller (5-3) penetrates into the lower part of the separation cylinder through a hole in the center of the concave guide plate (5-2); the motor (5-9) is fixed to the top of the separation cylinder through a motor bracket; the floating oil outflow pipe (5-13) is fixed to the concave guide plate (5-2); the floating oil outflow pipe (5-13) is connected to the fluid below the concave guide plate (5-2); and the outlet of the floating oil outflow pipe (5-13) extends out from the top of the separation cylinder.

6. The split type floating oil recovery device for sewage treatment according to claim 5 is characterized in that: The float bracket (5-11) has an adjusting screw (5-4) which corresponds one-to-one with the float (5-10) and can adjust the position of the float (5-10) along the axial direction of the separation cylinder.

7. The split type floating oil recovery device for sewage treatment according to claim 5, characterized in that: A baffle (5-6) is arranged at the bottom of the separation cylinder, and the baffle (5-6) faces the outlet of the propeller (5-3).

8. The split type floating oil recovery device for sewage treatment according to claim 5, characterized in that: The bottom of the separation cylinder has a bottom plate (5-14), and the bottom plate (5-14) extends toward the outside of the separation cylinder.

9. The split type floating oil recovery device for sewage treatment according to claim 5, characterized in that: A protective cover (5-1) is arranged above the motor (5-9).

10. The split type floating oil recovery device for sewage treatment according to claim 5, characterized in that: It also includes a control cabinet (8), and the control cabinet (8) is electrically connected to the floating oil collector (5) and the oil pump (9).

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