Intelligent blockage clearing and oil collecting type oil separation tank for catering dense area
By designing a smart oil-receiving oil-receiving tank in a catering-intensive area, using multiple third baffles and float skimmers to achieve efficient separation of oil and water, the existing existing oil-receiving tanks when dealing with domestic sewage in catering-intensive areas is solved. The problems of short hydraulic residence time and weak impact load resistance have improved the operating efficiency and clearing cycle of the oil separator pool.
Patent Information
- Application Number
- CN202421154771.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The oil content in domestic sewage in dense catering areas is high. The existing oil barrier pools have problems such as short hydraulic residence time, weak impact load capacity, large area, and unsuitable separation oil viscosity during treatment, resulting in unsatisfactory oil insulation effect. , affecting the back-end drainage equipment and urban sewage treatment plants.
A smart oil-receiving oil-receiving tank in the catering dense area was designed, and multiple third baffles were used to separate the oil-separation zone into an S-shaped oil passage. Combined with a float oil skimmer and an oil collector, it was removed through the filter box. Food residues improve hydraulic residence time, achieve efficient separation of oil and water, and automatically extract and discharge oil from oil through an automated control system.
Effectively improve the oil-water separation efficiency of the oil-separation tank, reduce the problem of deterioration of oil and oil discharge difficulties, extend the cleaning and blocking cycle of the oil-separation tank, improve the operation efficiency, and reduce the back-end drainage equipment and urban sewage treatment plants. The impact of
Smart Images
Figure CN222476260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, and in particular to an intelligent clearing and oil-collecting grease trap in a catering-intensive area. Background Art
[0002] Animal and plant oils in catering wastewater include floating oil (particle size ≥ 100um), dispersed oil (particle size 10~100um), emulsified oil (particle size 0.1~10um) and dissolved oil (particle size <0.1um). Usually, the discharge time of domestic sewage in catering-intensive areas is relatively concentrated, and the water volume has a large time-varying coefficient, which can easily form a strong impact load on the front-end grease trap. In addition, the oil content in the sewage is high. When the oil separation effect of the grease trap is not ideal, the drainage is difficult to meet the sewage discharge requirements, which will affect the back-end drainage equipment and urban sewage treatment plants.
[0003] There are many types of grease traps that separate animal and vegetable oils from catering wastewater based on the principle of oil-water density difference, including traditional horizontal flow grease traps, inclined plate grease traps and small grease traps. Generally, small grease traps have the disadvantages of short hydraulic retention time (HRT) and weak impact load resistance, making it difficult to meet the requirements for oil separation of domestic sewage in catering-intensive areas. Horizontal flow grease traps have a simple structure, convenient operation and management, and stable oil removal effect, but they have the disadvantages of large tank body and large footprint, and are not suitable when land is limited. Inclined plate grease traps have high oil-water separation efficiency, but facilities for cleaning the inclined plates need to be set up in the tank, and they are not suitable for separating animal and vegetable oils with higher viscosity.
[0004] Usually, if there is no filter installed at the front cleaning well of domestic sewage in catering-intensive areas, or the filter is damaged, catering food residues will enter the domestic sewage collection network together with domestic sewage. Domestic sewage carrying a large amount of suspended matter and sediment will enter the grease trap, which will cause blockage and reduce the periodic maintenance cycle; the emulsified oil and dissolved oil in domestic sewage will quickly consume the dissolved oxygen in the sewage under the action of aerobic microorganisms, causing domestic sewage to be hypoxic and easily emit odor. On the one hand, grease combines with surfactants (such as detergents, etc.) in sewage to form emulsified oil and forms a viscous foam with fine particles in catering sewage. After staying for a certain period of time, it will saponify and deteriorate, making it difficult to discharge oil; on the other hand, grease and coarse particles in catering sewage will bond to form oil blocks, which will be deposited at the bottom of the grease trap. If it is not cleaned in time, it is easy to cause blockage of the internal structure flow passage part, and water will overflow from the grease trap, seriously affecting the living environment. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a smart clearing and oil collection type grease trap for catering intensive areas. In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A smart oil-clearing and oil-collecting grease trap for catering-intensive areas comprises a grease trap of a box body, wherein a first baffle and a second baffle are fixedly connected inside the grease trap, which divide the grease trap into a water inlet area, an oil-separating area and a water outlet area, the water inlet area of the grease trap is provided with a water inlet pipe and a filter box, the filter box is located downstream of the water inlet pipe, the oil-separating area of the grease trap is provided with a plurality of third baffles respectively fixed on the bottom and top surfaces of the grease trap, the third baffles divide the oil-separating area into an S-shaped oil-passing channel, the top of the oil-passing channel is provided with a float skimmer fixed on the grease trap, the float skimmer is used to extract floating oil on the liquid surface of the oil-passing channel, the float skimmer is connected to an oil collecting tank through a pipeline, an oil drain pump is provided in the oil collecting tank, the oil collecting tank is fixed on the outer wall of the grease trap, and a drain outlet is provided in the water outlet area of the grease trap.
[0007] Furthermore, a plurality of openable and closable stainless steel top covers are installed on the top of the grease trap, and slag discharge ball valves are arranged at the bottom of the water inlet area, oil separation area and water outlet area of the grease trap, and the top covers correspond to the positions of the filter box in the water inlet area and the float skimmer in the oil separation area.
[0008] Furthermore, the filter box adopts a ceramsite filter box, the filter box is slidably connected to the water inlet area of the grease trap, and a limiting seat is provided at the bottom of the filter box to position the filter box.
[0009] Furthermore, a first liquid level sensor is provided in the water inlet area of the grease trap, and the first liquid level sensor is connected to an alarm.
[0010] Furthermore, a heating coil, a temperature sensor and a temperature control system are arranged inside the oil collecting tank, and the temperature control system is used to control the grease temperature of the oil collecting tank.
[0011] Furthermore, a second liquid level sensor, a third liquid level sensor and a controller are also provided inside the oil collecting tank. The second liquid level sensor and the third liquid level sensor are respectively arranged at the top and the bottom of the oil collecting tank. The controller is used to control the opening and closing of the oil discharge pump.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] After filtering out food residues in catering wastewater through the filter box, multiple third partitions are used to increase the hydraulic retention time of wastewater to achieve efficient separation of oil and water. The separated floating oil enters the oil collecting tank through the float skimmer and is then discharged through the oil discharge pump. By separating the grease and wastewater, grease deterioration and poor oil drainage can be avoided, the operating efficiency of the grease trap is improved, and the cleaning cycle of the grease trap can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the cutaway structure of an embodiment of the utility model;
[0017] Figure 3 This is a schematic diagram of the internal structure of the oil collecting tank according to an embodiment of the utility model.
[0018] In the above drawings: the first baffle 1, the second baffle 2, the water inlet area 3, the oil separation area 4, the water outlet area 5, the water inlet pipe 6, the filter box 7, the third baffle 8, the float skimmer 9, the oil collecting box 10, the drain outlet 11, the top cover 12, the slag discharge ball valve 13, the limit holder 14, the first liquid level sensor 15, the heating coil 16, the second liquid level sensor 17, the third liquid level sensor 18, and the oil discharge pump 19. DETAILED DESCRIPTION
[0019] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0020] Please refer to Figures 1 to 3 As shown, a smart oil-clearing and oil-collecting grease trap for catering-intensive areas comprises a grease trap of a box body, wherein the interior of the grease trap is fixedly connected with a first baffle 1 and a second baffle 2 which divide the grease trap into a water inlet area 3, a grease trap area 4 and a water outlet area 5, the water inlet area 3 of the grease trap is provided with a water inlet pipe 6 and a filter box 7, the filter box 7 is located downstream of the water inlet pipe 6, the grease trap area 4 of the grease trap is provided with a plurality of third baffles 8 respectively fixed on the bottom and top surfaces of the grease trap, the third baffles 8 divide the grease trap area 4 into an S-shaped oil-passing channel, the top of the oil-passing channel is provided with a float skimmer 9 fixed on the grease trap, the float skimmer 9 is used to extract the floating oil on the liquid surface of the oil-passing channel, the float skimmer 9 is connected to an oil collecting box 10 through a pipeline, the oil collecting box 10 is provided with an oil discharge pump 19, the oil collecting box 10 is fixed on the outer wall of the grease trap, and the water outlet area 5 of the grease trap is provided with a drain outlet 11.
[0021] Please refer to Figure 1 , Figure 2 As shown, a plurality of stainless steel top covers 12 that can be opened and closed are installed on the top of the grease trap, and a slag discharge ball valve 13 is arranged at the bottom of the water inlet area 3, the oil separation area 4 and the water outlet area 5 of the grease trap, and the top cover 12 corresponds to the position of the filter box 7 of the water inlet area 3 and the float skimmer 9 of the oil separation area 4. It is used for cleaning slag and maintenance.
[0022] Please refer to Figure 2 As shown, the filter box 7 is a ceramsite filter box 7, the filter box 7 is slidably connected to the water inlet area 3 of the grease trap, and a limit clamping seat 14 is provided at the bottom of the filter box 7 to position the filter box 7, so as to facilitate the replacement of the filter box 7.
[0023] Please refer to Figure 2 As shown, the water inlet area 3 of the grease trap is provided with a first liquid level sensor 15, and the first liquid level sensor 15 is connected to an alarm. When the liquid level in the water inlet area 3 of the grease trap reaches the first liquid level sensor 15, the alarm sounds an alarm to remind the staff to clean the filter box 7 and discharge the sewage.
[0024] Please refer to Figure 3 As shown, the oil collecting tank 10 is provided with a heating coil 16, a temperature sensor and a temperature control system, and the temperature control system is used to control the temperature of the grease in the oil collecting tank 10. The oil in the oil collecting tank 10 is heated by the heating coil 16 to prevent the grease from condensing into a block of solid under low temperature conditions, which is inconvenient for the discharge of the grease. The temperature of the oil collecting tank 10 is controlled by the temperature control system according to the type of grease to ensure smooth flow of dirty oil.
[0025] Please refer to Figure 3 As shown, the oil collecting tank 10 is further provided with a second liquid level sensor 17, a third liquid level sensor 18 and a controller. The second liquid level sensor 17 and the third liquid level sensor 18 are respectively provided at the top and the bottom of the oil collecting tank 10. The controller is used to control the opening and closing of the oil drain pump 19. When the liquid level of the oil collecting tank 10 reaches the second liquid level sensor 17, the controller controls the oil drain pump 19 to work and drain the oil in the oil collecting tank 10. When the oil reaches below the third liquid level sensor 18, the oil drain pump 19 stops draining the oil, thus realizing automatic control and saving manual operation.
[0026] The working principle of the entire oil separation system:
[0027] The catering sewage flows into the water inlet area 3 of the grease trap body through the water inlet pipe 6, and the food residues in the sewage are filtered out through the expanded clay basket filter box 7. As the food residues retained by the expanded clay basket filter box 7 increase, the water level in the water inlet area 3 rises. When it reaches the height of the first liquid level sensor 15, the alarm is activated to remind the staff to use the expanded clay basket filter box 7 to clean the food residues and restore the function of the filter box 7. The sewage with the food residues filtered out enters the oil separation area 4 of the grease trap through the lower part of the baffle.
[0028] In the grease trap area 4 of the grease trap, restaurant sewage passes through the corridor deflection formed by the first partition, several third partitions and the second partition in turn, which greatly increases the hydraulic retention time of the sewage in the grease trap area 4, allowing the floating oil in the sewage to fully float up using the density flotation principle, and the floating oil is further collected by the float skimmer 9 on the upper part of the grease trap area 4, and the floating oil is introduced into the oil collecting tank 10 through a hose. The sewage after oil separation enters the water outlet area 5 and is discharged out of the grease trap through the drain port 11.
[0029] Among them, the float skimmer 9 can be a stainless steel float skimmer produced by Wuxi Dechun Technology Co., Ltd. The working principle of the float skimmer can be summarized as the following steps:
[0030] Sewage enters the skimmer: After being pre-treated, the sewage first flows into the float skimmer;
[0031] Float rises: According to Archimedes' principle, the density of the float is less than that of the sewage, so it floats in the sewage and rises;
[0032] Oil floats up: As the float rises, the density of oil is lower than that of sewage, so it will be pushed to the surface of the water by buoyancy;
[0033] Oil skimming: The oil on the float is collected in a skimmer tank and then removed by an oil pump or other means.
[0034] After the float skimmer 9 guides the floating oil in the oil separator area 4 of the grease trap to the oil collecting tank 10 through the hose, as the floating oil level in the oil collecting tank 10 rises and reaches the second liquid level sensor 17, the second liquid level sensor 17 transmits a signal to the controller, and the oil drain pump 19 starts to drain the floating oil in the oil collecting tank 10 from the oil collecting tank 10; as the liquid level in the oil collecting tank 10 drops and reaches the position of the third liquid level sensor 18, the third liquid level sensor 18 transmits a signal to the controller, and the oil drain pump 19 is turned off to stop draining the oil.
[0035] When the temperature of the oil collecting tank 10 is lower than 5°C, the temperature sensor transmits a signal to the temperature control system, and the temperature control system starts the heating coil to heat the grease in the oil collecting tank 10 to prevent the grease from agglomerating at low temperature; when the temperature of the oil collecting tank 10 reaches 30°C, the temperature sensor transmits a signal to the temperature control system, and the temperature control system controls the heating coil 16 to stop heating.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A smart oil-clearing and oil-collecting grease trap for catering-intensive areas, characterized in that: The invention discloses a grease trap comprising a box body, wherein a first baffle and a second baffle are fixedly connected inside the grease trap for dividing the grease trap into a water inlet area, an oil separation area and a water outlet area, the water inlet area of the grease trap is provided with a water inlet pipe and a filter box, the filter box is located downstream of the water inlet pipe, the oil separation area of the grease trap is provided with a plurality of third baffles respectively fixed on the bottom and top surfaces of the grease trap, the third baffles divide the oil separation area into an S-shaped oil passage, a float skimmer fixed on the grease trap is provided on the top of the oil passage, the float skimmer is used to extract floating oil on the liquid surface of the oil passage, the float skimmer is connected to an oil collecting tank through a pipeline, an oil drain pump is provided in the oil collecting tank, the oil collecting tank is fixed on the outer wall of the grease trap, and a drain outlet is provided in the water outlet area of the grease trap.
2. According to claim 1, a smart oil-clearing and oil-collecting grease trap for a catering-intensive area, characterized in that: A plurality of openable and closable stainless steel top covers are installed on the top of the grease trap, and slag discharge ball valves are arranged at the bottom of the water inlet area, the oil separation area and the water outlet area of the grease trap. The top covers correspond to the positions of the filter box in the water inlet area and the float skimmer in the oil separation area.
3. According to claim 2, a smart oil-clearing and oil-collecting grease trap for a catering-intensive area, characterized in that: The filter box adopts a ceramsite filter box, the filter box is slidably connected to the water inlet area of the grease trap, and a limited position holder is arranged at the bottom of the filter box to position the filter box.
4. According to claim 1, a smart oil-clearing and oil-collecting grease trap for a catering-intensive area, characterized in that: A first liquid level sensor is provided in the water inlet area of the grease trap, and the first liquid level sensor is connected to an alarm.
5. According to claim 1, the intelligent clearing and oil collection type grease trap for catering intensive areas is characterized by: The oil collecting tank is provided with a heating coil, a temperature sensor and a temperature control system inside, and the temperature control system is used to control the grease temperature of the oil collecting tank.
6. The intelligent oil-clearing and oil-collecting grease trap for a catering-intensive area according to claim 1 is characterized by: A second liquid level sensor, a third liquid level sensor and a controller are also provided inside the oil collecting tank. The second liquid level sensor and the third liquid level sensor are respectively arranged at the top and the bottom of the oil collecting tank. The controller is used to control the opening and closing of the oil discharge pump.