Corridor type obstacle-avoiding desilting-free oil separation tank

Abstract

The utility model discloses a winding corridor type obstacle avoidance desilting-free oil separation tank, which relates to the technical field of wastewater purification and comprises a tank body, the tank body is divided into three grids, partition walls are arranged in three partition grooves, a winding corridor is arranged in the middle of the tank body through the partition walls, a water inlet is arranged at one end of the tank body, and a lifting pump is arranged in the tank body. An oil-water mixture of restaurant wastewater filtered by the grating enters the first grid of the oil separation tank from the water inlet, the air stirring system is started, and oil stains are attached to the surfaces of tiny bubbles, rise to the surfaces along with floating of the bubbles and are discharged out of the system through the oil skimming hole; the oil-water mixture which is not thoroughly separated in the first grid flows to the second grid through the gallery, the step of the first grid is repeated, oil-water separation is further carried out, in the same way, the oil-water mixture enters the third grid, oil-water separation is carried out again, the three grids are circuitous in a snakelike manner and are communicated up and down, stage treatment is formed, the retention time is prolonged, and the oil stain separation effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater purification, and particularly relates to a corridor-type obstacle-avoiding and silt-free cleaning oil interceptor. Background Technique

[0002] An oil interceptor separates based on the different specific gravities of suspended solids and water in wastewater. The structure of the oil interceptor mostly adopts the horizontal flow type. The oily wastewater enters the rectangular oil interceptor through the water distribution trough and slowly flows horizontally. During the flow, the oil floats to the water surface and is pushed into the collecting oil pipe by the collecting oil pipe or the oil scraper set on the pool surface and then flows into the dehydration tank. The heavy oil and other impurities precipitated in the oil interceptor accumulate in the sludge hopper at the bottom of the pool and enter the sludge pipe through the sludge discharge pipe. The wastewater treated by oil separation then overflows into the drainage channel and is discharged out of the pool for subsequent treatment to remove emulsified oil and other pollutants.

[0003] The oil interceptor is divided into two compartments and three grids in the pool body. The oily sewage enters the first grid from the water inlet. The sundry basket in the first grid separates the sundries in the oily sewage. The oily sewage without sundries enters the second grid. The space in the second grid is larger, meeting the design requirements of the oil interceptor. Using the specific gravity difference between oil and water, the natural floating method is adopted to fully separate the oil and water. The separated sewage enters the third grid and is discharged through the water outlet pipe. The separated oil is in the oil collecting tank in the second grid and is removed manually or the oil is discharged into the oil collecting bucket by an oil pump.

[0004] After the oil and water in the existing oil interceptor enter the first grid, they flow from the bottom to the second grid and then from the upper part to the third grid. This traditional oil interceptor brings the following problems:

[0005] The actual residence time is calculated based on the volume of two grids, and the required pool volume is large, and the separation is not thorough. In addition, sludge forms at the bottom of the pool after long-term operation, and the cleaning is difficult. Therefore, we propose a corridor-type obstacle-avoiding and silt-free cleaning oil interceptor. Content of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] Aiming at the deficiencies of the prior art, the utility model provides a corridor-type obstacle-avoiding and silt-free cleaning oil interceptor to solve the technical problem of incomplete oil separation and purification.

[0008] (2) Technical Solutions

[0009] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0010] A corridor-type obstacle-avoiding and silt-free cleaning oil interceptor includes

[0011] The pool body is divided into three compartments, and partition walls are arranged in the three partition tanks. The partition walls are used to set up a corridor in the middle of the pool body. The partition walls and the corridor are used to make the flow path of the sewage in the pool body in a corridor shape, increasing the flow time, so as to improve the purification time of oil separation and thus improve the quality of purified oil separation.

[0012] An inlet is arranged at one end of the pool body, and an overflow port is also arranged on the other side of the pool body. When the inflow and outflow are unbalanced and the liquid level in the pool body is too high, the water flows out from the overflow port and enters the relevant pool. The setting of the overflow port ensures that in case of problems in the system, the sewage will not flow disorderly.

[0013] Preferably, three groups of covers are arranged at the upper end of the pool body, and the openings of the covers are communicated with the external oil removal equipment to remove the floating oil. An air agitation system is arranged at the bottom of the pool body. The air agitation system includes three groups of perforated pipes and a blower, which are evenly distributed in the three partition boards of the pool body respectively. A blower is arranged above the perforated pipes and is communicated with the perforated pipes through the blower. A valve is arranged in the middle of the blower, and the switch of the blower is controlled through the valve to realize the control of the switch of the perforated pipes and achieve dead - angle - free agitation. Under normal circumstances, no sludge will form at the bottom of the pool. After long - term operation, when it is difficult to clean the sludge at the bottom of the pool, the other three groups of perforated pipes are independent. Two of the valves can be closed and one valve can be opened separately, and the blower supplies air for one valve, so that the aeration intensity can be increased by three times to clean the stubborn sludge at the bottom of the pool, realizing manual - free sludge cleaning.

[0014] Preferably, a liquid level gauge is arranged inside the pool body to measure the liquid level of the sewage to be purified in the pool body. A lift pump is arranged inside the pool body. The lift pump is connected to the outside through a water pipe. The lift pump is automatically controlled to start and stop through the liquid level gauge, starting when the liquid level is high and stopping when the liquid level is low, pumping the separated water out of the system and into subsequent treatment.

[0015] Preferably, an obstacle - avoidance area is arranged in the middle under the pool body. The specific position and size of the design of the obstacle - avoidance area can be matched according to the position of the pipelines in the installation environment, and can give way to existing structures and equipment such as manholes and pipelines.

[0016] Preferably, the corridor - type structure of the pool body with upper and lower through - holes has no requirement for the volume of each grid, and only the longitudinal residence time needs to be considered. Therefore, in a complex site with manholes or pipelines, according to the actual situation, by adjusting the size of the obstacle - avoidance area, obstacles can be avoided, and the adaptability is strong.

[0017] (III) Beneficial effects

[0018] The oil-water mixture of the catering wastewater after being filtered by the grille enters the first cell of the oil separation tank from the water inlet. The air stirring system is turned on. The oil adheres to the surface of the tiny bubbles and rises to the surface as the bubbles float, and is discharged from the system through the oil skimming holes. The oil-water mixture that is not completely separated in the first cell flows to the second cell through the corridor, repeating the steps of the first cell for further oil-water separation. Similarly, the oil-water mixture enters the third cell for oil-water separation again. The three cells are arranged in a serpentine and circuitous manner, with upper and lower interconnections.

[0019] The oil separated by aeration is cohesive and adhesive, and is not likely to flow into other cells. The separated clear water has greater fluidity and can easily flow from the previous cells to the subsequent cells. Therefore, the corridor is designed with an upper and lower through structure. Most of the oil separated in the front section accumulates in the front section, forming a hierarchical treatment, extending the residence time and enhancing the effect of oil separation.

[0020] The switch of the blower is controlled by a valve to control the switch of the perforated pipe, achieving dead-angle-free stirring. Under normal circumstances, no sludge will form at the bottom of the tank. After long-term operation, when it is difficult to clean the sludge at the bottom of the tank, the other three groups of perforated pipes are independent of each other. Two of the valves can be closed and one valve can be opened separately, and the blower supplies air to one valve group, which can triple the aeration intensity to clean the stubborn sludge at the bottom of the tank, realizing sludge cleaning without manual labor. Description of the Drawings

[0021] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

[0022] Figure 1 It is the front sectional view of a corridor-type obstacle-avoiding and sludge-free oil separation tank of the present invention;

[0023] Figure 2 It is the side sectional view of a corridor-type obstacle-avoiding and sludge-free oil separation tank of the present invention;

[0024] Figure 3 It is the top view of a corridor-type obstacle-avoiding and sludge-free oil separation tank of the present invention.

[0025] Legend: 1. Tank body; 2. Blower; 3. Valve; 4. Liquid level gauge; 5. Lift pump; 6. Cover plate; 7. Perforated pipe; 8. Partition wall; 9. Overflow port; 10. Water inlet; 11. Corridor; 12. Obstacle-avoiding area. Detailed Embodiment

[0026] Embodiments of the present application provide a corridor - type obstacle - avoiding and silt - free - cleaning oil - separation tank, which solves the problem of incomplete oil separation in the prior art. The corridor is designed as an up - and - down through - structure, and most of the separated oil and grease in the front section accumulates in the front section, forming a hierarchical treatment, extending the residence time and enhancing the effect of oil - grease separation.

[0027] Embodiment 1

[0028] Comprehensive Figure 1 and 3 As shown in the figure, in order to solve the problem of incomplete oil separation, the overall idea of the technical solution in the embodiments of the present application is as follows:

[0029] In view of the problems existing in the prior art, the present utility model provides a corridor - type obstacle - avoiding and silt - free - cleaning oil - separation tank, including

[0030] a tank body 1. The tank body 1 is divided into three compartments, and a partition wall 8 is arranged in three of the partition grooves. The partition wall 8 is used to set a corridor 11 in the middle of the tank body 1. The sewage flow path in the tank body 1 is in a corridor shape through the partition wall 8 and the corridor 11, increasing the flow time, so as to improve the purification time of oil separation and thus improve the quality of purified oil separation.

[0031] An inlet 10 is arranged at one end of the tank body 1, and an overflow port 9 is also arranged on the other side of the tank body 1. When the inflow and outflow are unbalanced, resulting in too high a liquid level in the tank body 1, the water flows out from the overflow port 9 and enters the relevant water tanks. The setting of the overflow port 9 ensures that in case of problems in the system, the sewage will not flow disorderly.

[0032] Embodiment 2

[0033] As Figures 1-3 shown, based on Embodiment 1, in order to solve the problem that sludge is formed at the bottom of the tank after long - term operation and is difficult to clean, the overall idea of the embodiments of the present application is as follows:

[0034] Three groups of covers 6 are arranged at the upper end of the tank body 1. The openings of the covers 6 are communicated with external oil - removal equipment to remove the floating oil and grease. An air agitation system is arranged at the bottom of the tank body 1. The air agitation system includes three groups of perforated pipes 7 and a blower 2, which are evenly distributed in three groups of partition plates of the tank body 1. The blower 2 is arranged above the perforated pipes 7 and is communicated with the perforated pipes 7. A valve 3 is arranged in the middle of the blower 2 to control the switch of the blower 2, so as to control the switch of the perforated pipes 7 and achieve dead - angle - free agitation. Under normal circumstances, no sludge will be formed at the bottom of the tank. After long - term operation, when it is difficult to clean the sludge at the bottom of the tank, the other three groups of perforated pipes 7 are independent of each other. Two of the valves 3 can be closed and one valve 3 can be opened separately, so that the blower 2 supplies air to one valve 3, and the aeration intensity can be increased by three times to clean the stubborn sludge at the bottom of the tank, realizing silt - free - cleaning by artificial means.

[0035] A liquid level meter 4 is provided inside the tank body 1, and the liquid level meter 4 is used to measure the liquid level of the sewage to be purified in the tank body 1. A lifting pump 5 is provided inside the tank body 1, and the lifting pump 5 is connected to the outside through a water pipe. The lifting pump 5 is automatically controlled to start and stop by the liquid level meter 4, and the separated water is pumped out of the system for subsequent treatment.

[0036] Example 3

[0037] comprehensive Figure 2 and 3 As shown, based on Example 1, the embodiment of the present application is to solve the problem that the conventional dredging equipment is difficult to avoid existing structures and equipment such as manholes and pipelines due to its fixed size. The overall idea is as follows: an obstacle avoidance zone 12 is provided in the middle part below the pool body 1, wherein the specific design position and size of the obstacle avoidance zone 12 can be designed to match the position of the pipeline in the installation environment, so as to make way for existing structures and equipment such as manholes and pipelines.

[0038] The corridor-type structure of the pool body 1 that runs through the top and bottom has no requirement for the volume of each grid, as long as the vertical residence time is considered. Therefore, in complex sites with manholes or pipelines, obstacles can be avoided by adjusting the size of the obstacle avoidance zone 12 according to actual conditions, and the adaptability is strong.

[0039] When in use, the oil-water mixture of catering wastewater after grating filtration enters the first compartment of the grease trap from the water inlet, and the air stirring system is turned on. The oil adheres to the surface of tiny bubbles and rises to the surface as the bubbles float up, and then is discharged through the skimming hole. The oil-water mixture that is not completely separated in the first compartment flows to the second compartment through the corridor, and the steps of the first compartment are repeated to further separate the oil and water. Similarly, the oil-water mixture enters the third compartment and is separated again. The three compartments are serpentine and interconnected.

[0040] The oil separated by aeration is cohesive and sticky, and is not easy to flow to other grids. The fluidity of the clean water after separation is increased, and it is easy to flow from the front grid to the back grid. Therefore, the corridor is designed as an up and down through structure. Most of the oil separated in the front section is gathered in the front section, forming a graded treatment, which prolongs the residence time and enhances the effect of oil separation.

[0041] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A corridor - type obstacle - avoiding and silt - cleaning - free oil - separation tank, characterized in that: The tank body (1), the tank body (1) is divided into three compartments, and partition walls (8) are arranged in three partition troughs. The partition walls (8) are used to set a corridor (11) in the middle of the tank body (1). The sewage flow path in the tank body (1) is in a corridor shape through the partition walls (8) and the corridor (11). An inlet (10) is arranged at one end of the tank body (1), and a lift pump (5) is arranged inside the tank body (1).

2. The corridor type obstacle avoidance and silt - free cleaning oil - separation tank according to claim 1, characterized in that: Three groups of cover plates (6) are arranged at the upper end of the tank body (1), and the openings of the cover plates (6) are communicated with external oil - removal equipment to remove the floating oil.

3. The corridor type obstacle avoidance and silt - free cleaning oil - separation pool as described in claim 2, characterized in that: An air agitation system is arranged at the bottom of the tank body (1). The air agitation system includes three groups of perforated pipes (7) and a blower (2), which are evenly distributed in three groups of partition plates of the tank body (1).

4. The corridor-type obstacle-avoiding and silt-removal-free oil interceptor according to claim 3, wherein: The blower (2) is arranged above the perforated pipe (7) and is communicated with the perforated pipe (7) through the blower (2).

5. The corridor-type obstacle-avoiding and silt-removal-free oil interceptor according to claim 4, characterized in that: A valve (3) is arranged in the middle of the blower (2) to control the switch of the blower (2) through the valve (3).

6. The corridor type obstacle avoidance and silt - free cleaning oil - separation pool according to claim 5, characterized in that: The three groups of perforated pipes (7) are independent of each other, and the valve (3) is independently controlled according to the usage requirements.

7. The one kind of corridor - type obstacle - avoiding and sediment - cleaning - free oil - separating tank according to claim 1, characterized in that: An obstacle - avoiding area (12) is arranged in the middle below the tank body (1). The specific position and size of the design of the obstacle - avoiding area (12) can be designed to match according to the position of the pipeline in the installation environment.

8. The corridor type obstacle avoidance and silt - free cleaning oil - separation pool according to claim 1, characterized in that: An overflow port (9) is also arranged on the other side of the tank body (1).

9. The corridor type obstacle avoidance and silt - free cleaning oil - separation pool according to claim 1, characterized in that: A liquid level gauge (4) is arranged inside the tank body (1) to measure the liquid level of the sewage to be purified in the tank body (1).

10. A corridor-type obstacle-avoiding and silt-removal-free oil interceptor according to claim 9, characterized in that: The lift pump (5) is connected to the outside through a water pipe. The lift pump (5) is automatically controlled to start and stop through the liquid level gauge (4), starting when the level is high and stopping when the level is low, and pumping out the separated water from the system.

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