An oil-water separation device for an oil drain and sludge separator

Abstract

This utility model discloses an oil-water separation device for an oil-water separator, comprising a sand settling tank for settling sand and dust, and a sludge settling tank for settling small particulate sediments. The top of the sand settling tank is higher than the top of the sludge settling tank to form an overflow height difference, and the two tanks are connected at the height difference by a guide pipe. An aerator is installed inside the sludge settling tank, and a drain pipe is installed at the top of the sludge settling tank. An oil collection tank is connected to the top of the sludge settling tank, and the bottom of the oil collection tank is connected to the sludge settling tank. An oil discharge pipe is installed on the oil collection tank, and the drain outlet of the drain pipe is higher than the oil discharge outlet. A switch valve is installed on the oil discharge pipe. This utility model has a simple and compact structure, good separation effect, and can achieve complete separation of oil and water in kitchen wastewater.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to an oil-water separation device for an oil separator and slag remover. Background Technology

[0002] With the continuous development of cities in my country, the number of complexes, enterprise and institution canteens, school canteens, hotels, food courts, and other places with large-scale catering and food plazas has also increased. These catering establishments generate a large amount of kitchen wastewater every day. Kitchen wastewater contains food scraps and swill, which contain a large amount of animal and vegetable oil. If food scraps and swill are discharged directly into sewers without treatment or illegally discharged, a large amount of oil will adhere to the pipe walls, causing problems such as reduced flow capacity and blockages in the sewer system. Therefore, there is an urgent need for an oil-water separation device. Utility Model Content

[0003] To address the aforementioned deficiencies in existing technologies, this utility model provides an oil-water separation device for an oil separator and slag remover. This device has a simple and compact structure, excellent separation effect, and can achieve complete separation of oil and water in kitchen wastewater.

[0004] To achieve the above objectives, the technical solution of this utility model is: an oil-water separation device for an oil separator and slag remover, comprising a sand settling tank for settling sand and dust, and a slag settling tank for settling small particulate sediments. The top of the sand settling tank is higher than the top of the slag settling tank to form an overflow height difference, and the two are connected by a guide pipe at the height difference. An aerator is installed inside the slag settling tank. A drain pipe is installed at the top of the slag settling tank. An oil collection tank is connected to the top of the slag settling tank. The bottom of the oil collection tank is connected to the slag settling tank. An oil discharge pipe is installed on the oil collection tank. The drain outlet of the drain pipe is higher than the oil discharge outlet, and a switch valve is installed on the oil discharge pipe.

[0005] Preferably, the bottom of both the sedimentation tank and the sludge tank is cone-shaped, and each bottom is provided with a drain pipe, and each drain pipe is provided with a switch valve.

[0006] Preferably, the front of the sedimentation tank is provided with an inspection port and a maintenance manhole, which are sealed by sealing plates respectively.

[0007] Preferably, both the sedimentation tank and the oil collection tank are provided with exhaust ports on their tops, and the exhaust ports are connected by exhaust pipes with the pipe openings facing upwards.

[0008] Preferably, the guide pipe is inverted L-shaped, with one end connected to the top side of the sedimentation tank and the other end entering the interior of the sedimentation tank from the top side, with the pipe opening located in the middle of the sedimentation tank.

[0009] Preferably, the top of the sedimentation tank is configured as a square pyramid, and the oil collection tank is located on top of the sedimentation tank.

[0010] Preferably, a sight glass is provided on the side of the oil collection tank, a scraper is provided on the inner side of the sight glass, and a rotatable handle connected to the scraper is provided on the outer side of the sight glass so that the scraper can scrape off the oil stains on the inner side of the sight glass when the handle is turned.

[0011] Preferably, a temperature sensor is provided on the top of the oil collection tank, and a heating chamber is provided in the oil collection tank, with a heating rod installed inside the heating chamber.

[0012] Preferably, the aerator includes a main pipe and branch pipes connected to the main pipe, and the branch pipes are provided with multiple aeration pipes.

[0013] Preferably, the sedimentation tank is equipped with inclined plate packing inside, and the inclined plate packing is installed at an angle in the middle of the sedimentation tank.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows: the conical oil collection hood structure greatly improves the oil-water separation effect; the equipment is equipped with a unique heating device to avoid the problems of animal oil solidification and saponification; the equipment is equipped with a unique aeration device to further improve the oil-water separation effect; and in conjunction with the inclined tube packing device inside the sedimentation tank, the separation effect of oil and water is greatly improved. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of the present invention; Figure 3 This is a top view of the present invention; In the above figures: 1. Grit chamber; 11. Manhole; 12. Sealing plate; 13. Conical hopper; 14. Sewage pipe; 15. Switch valve; 2. Sludge tank; 21. Aerator; 211. Main pipe; 212. Branch pipe; 213. Aeration pipe; 22. Oil collection tank; 221. Oil drain pipe; 222. Switch valve; 223. Sight glass; 224. Scraper; 225. Handle; 226. Temperature sensor; 227. Heating rod; 228. Inclined packing; 3. Sewage inlet; 4. Guide pipe; 5. Exhaust port; 6. Drain pipe. Detailed Implementation

[0017] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0018] An oil-water separation device for an oil separator and slag remover, see [link to relevant documentation]. Figures 1 to 3 The system includes a settling tank 1 for settling sand and dust, and a sedimentation tank 2 for settling small particulate matter. A kitchen wastewater inlet 3 is located at the center of the top of the settling tank. After filtration, the kitchen wastewater enters the settling tank 1 through the kitchen wastewater inlet 3. The top of the settling tank 1 is higher than the top of the sedimentation tank 2 to create an overflow height difference, and the two are connected at this height difference by a guide pipe 4. That is, the settling tank 1 is connected to the sedimentation tank 2 through the guide pipe 4, and the kitchen wastewater flows through the settling tank. After sedimentation, the wastewater enters the sedimentation tank through the guide pipe 4. In this embodiment, the guide pipe 4 is inverted L-shaped. One end of the guide pipe 4 is connected to the top side of the sedimentation tank 1, and the other end of the guide pipe 4 enters the sedimentation tank 2 from the top side of the sedimentation tank 1. The pipe opening is located in the middle of the sedimentation tank, so that the inlet of the guide pipe 4 is at the top side water level of the sedimentation tank 1, and the outlet of the guide pipe 4 is at the middle water level of the sedimentation tank. The wastewater flows into the sedimentation tank 1 by gravity after the height difference. The grit chamber 1 has an inspection manhole 11 on the front, which is sealed by a sealing plate 12. The bottom of both the grit chamber 1 and the sludge chamber 2 is a cone-shaped hopper 13, and each bottom is equipped with a drain pipe 14. Each drain pipe is equipped with a switch valve 15, which can be a manual valve or a solenoid valve. An aerator 21 is installed inside the sedimentation tank. The aerator includes a main pipe 211 and a branch pipe 212 connected to the main pipe, and multiple aeration pipes 213 are installed on the branch pipe. Both the sedimentation tank and the oil collection tank are equipped with exhaust ports 5 on their tops. The exhaust ports are connected by exhaust pipes with the pipe openings facing upwards. The top of the sediment box is provided with a drain pipe 6, and the top of the sediment box 2 is connected to an oil collection box 22. The top of the sediment box is set as a square pyramid shape. The oil collection box 22 is located at the top of the sediment box 2, and the bottom of the oil collection box 22 is connected to the sediment box 2. An oil drain pipe 221 is provided on the oil collection box 22. The drain pipe opening of the drain pipe 6 is higher than the oil drain opening of the oil drain 221, and a switch valve 222 is provided on the oil drain pipe 221. A sight glass 223 is provided on the side of the oil collection tank. A scraper 224 is provided on the inner side of the sight glass. A rotatable handle 225 connected to the scraper is provided on the outer side of the sight glass so that the scraper can scrape off the oil stains on the inner side of the sight glass when the handle is turned. A temperature sensor 226 is installed on the top of the oil collection tank, and a heating chamber is provided in the oil collection tank, with a heating rod 227 installed inside the heating chamber; It also includes a controller 228, which is electrically connected to the temperature sensor and the heating rod; The sedimentation tank is equipped with inclined plate packing 229, which is installed at an angle in the middle of the sedimentation tank.

[0019] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An oil-water separation device for an oil-water separator and slag remover, characterized in that: The system includes a settling tank for settling sand and dust, and a sludge tank for settling small particulate sediments. The top of the settling tank is higher than the top of the sludge tank to form an overflow height difference, and the two are connected by a guide pipe at the height difference. An aerator is installed inside the sludge tank. A drain pipe is installed on the top of the sludge tank. An oil collection tank is connected to the top of the sludge tank. The bottom of the oil collection tank is connected to the sludge tank. An oil discharge pipe is installed on the oil collection tank. The drain outlet of the drain pipe is higher than the oil discharge outlet, and a switch valve is installed on the oil discharge pipe.

2. The oil-water separation device for an oil-water separator and slag remover according to claim 1, characterized in that: The bottom of both the sedimentation tank and the sludge tank is cone-shaped, and each bottom is equipped with a drain pipe, which is equipped with a switch valve.

3. The oil-water separation device for an oil separator and slag remover according to claim 1, characterized in that: The front of the sedimentation tank is equipped with an inspection port and a maintenance manhole, which are sealed by sealing plates.

4. The oil-water separation device for an oil-water separator and slag remover according to claim 1, characterized in that: Both the sedimentation tank and the oil collection tank are equipped with exhaust ports on their tops, and the exhaust ports are connected by exhaust pipes with the pipe openings facing upwards.

5. The oil-water separation device for an oil separator and slag remover according to claim 1, characterized in that: The guide pipe is inverted L-shaped, with one end connected to the top side of the grit chamber and the other end entering the interior of the grit chamber from the top side, with the pipe opening located in the middle of the grit chamber.

6. The oil-water separation device for an oil separator and slag remover according to claim 1, characterized in that: The top of the sedimentation tank is configured as a four-sided pyramid, and the oil collection tank is located on top of the sedimentation tank.

7. The oil-water separation device for an oil-water separator and slag remover according to claim 1, characterized in that: A sight glass is provided on the side of the oil collection tank. A scraper is provided on the inside of the sight glass. A rotatable handle connected to the scraper is provided on the outside of the sight glass so that the scraper can scrape off the oil stains on the inside of the sight glass when the handle is turned.

8. The oil-water separation device for an oil separator and slag remover according to claim 1, characterized in that: A temperature sensor is installed on the top of the oil collection tank, and a heating chamber is provided in the oil collection tank, with a heating rod installed inside the heating chamber.

9. The oil-water separation device for an oil separator and slag remover according to claim 1, characterized in that: The aerator includes a main pipe and branch pipes connected to the main pipe, and multiple aeration pipes are provided on the branch pipes.

10. The oil-water separation device for an oil separator and slag remover according to claim 1, characterized in that: The sedimentation tank is equipped with inclined plate packing, which is installed at an angle in the middle of the sedimentation tank.

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