An oil and water drain spool
The U-shaped tube structure enables oil-water separation, solving the problem of needing to replace filter elements regularly in traditional devices, achieving automatic oil-water separation, and reducing processing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QIDONG QUNHE MASCH EQUIP CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional oil-water filtration devices require regular filter replacements, increasing processing costs and failing to effectively address the problem of oil pollution in kitchen wastewater.
The system adopts a U-shaped pipe structure and utilizes the principle of oil and water stratification in sewage within the U-shaped pipe. Oil and water separation is achieved through an oil drain head and a water drain head. The oil layer flows out from the oil drain head, and the water layer flows out from the overflow pipe. Combined with connecting pipes and valve control, oil and water separation is realized.
It achieves automatic oil-water separation, eliminates the need for regular filter replacement, has a simple structure, effectively removes oil, and reduces processing costs.
Smart Images
Figure CN224395684U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewage discharge technology, specifically to a short pipe for oil and water drainage. Background Technology
[0002] Kitchen wastewater contains a large amount of oil. Direct discharge of untreated wastewater will cause pollution and increase the burden on water purification. Traditional oil-water filtration is carried out by installing filter cartridges at the drain, but the filter cartridges need to be replaced regularly, which increases the treatment cost. Utility Model Content
[0003] The purpose of this invention is to provide an oil-water drain pipe that has the advantages of simple structure and effective oil removal.
[0004] The technical solution of this utility model is as follows:
[0005] An oil-water drain pipe includes a U-shaped pipe, the first end of which is connected to a drain outlet and the second end is sealed. An oil drain head is provided on the side wall of the vertical portion of the U-shaped pipe connected to the first end, and a drain head is provided on the side wall of the vertical portion of the U-shaped pipe connected to the second end. The oil drain head is higher than the drain head. An overflow pipe is provided along the axis of the vertical portion of the U-shaped pipe connected to the second end. The overflow pipe is connected to the drain head, and the lower end of the overflow pipe extends to the curved portion of the U-shaped pipe.
[0006] Preferably, a connecting pipe is provided between the two vertical sections of the U-shaped tube, and the connecting pipe is at the same height as the oil drain head.
[0007] Preferably, the upper and lower parts of the vertical section of the U-shaped tube are each provided with a set of oil drain head, a drain head, and a connecting pipe. The two drain heads are connected to the same overflow pipe. The outer ends of the oil drain head and the drain head are provided with flanges. The oil drain head and the drain head in one of the two sets are connected to the oil drain pipe and the drain pipe respectively by connecting bolts. The oil drain head and the drain head in the other set are connected to the sealing plate by connecting bolts.
[0008] Preferably, the inner end of the oil discharge head is provided with an oil inlet pipe with an opening facing downwards.
[0009] Preferably, a drain head is provided at the bottom of the middle section of the curved part of the U-shaped tube, a drain pipe is connected to the drain head, and a valve is provided on the drain head.
[0010] The beneficial technical effects of this utility model are as follows:
[0011] By using a U-shaped pipe to temporarily hold the sewage flowing out of the sewage outlet, the sewage separates into oil and water layers inside the U-shaped pipe. The oil layer at the top flows away from the oil drain head, while the water layer at the bottom rises along the overflow pipe and leaves the U-shaped pipe from the drain head, thus achieving oil-water separation of the sewage. This device does not require periodic replacement of filter consumables and has the advantages of simple structure and effective oil removal. Attached Figure Description
[0012] The technical solution of this utility model will be further described below with reference to the accompanying drawings.
[0013] Appendix Figure 1 This is a front-view cross-sectional view of the present invention.
[0014] In the diagram: 1-drain outlet, 2-U-shaped pipe, 3-oil drain head, 4-water drain head, 5-overflow pipe, 6-connecting pipe, 7-flange, 8-connecting bolt, 9-oil inlet pipe, 10-drain head, 11-valve, 12-oil drain pipe, 13-water drain pipe, 14-sealing plate. Detailed Implementation
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] Example:
[0017] like Figure 1 As shown, this embodiment provides an oil-water drain pipe, including a U-shaped pipe 2. The first end of the U-shaped pipe 2 is connected to the drain outlet 1 and the last end is sealed. An oil drain head 3 is provided on the side wall of the vertical part of the U-shaped pipe 2 connected to the first end. A drain head 4 is provided on the side wall of the vertical part of the U-shaped pipe 2 connected to the last end. The oil drain head 3 is higher than the drain head 4. An overflow pipe 5 is provided along the axis of the vertical part of the U-shaped pipe 2 connected to the last end. The overflow pipe 5 is connected to the drain head 4. The lower end of the overflow pipe 5 extends to the curved part of the U-shaped pipe 2.
[0018] The wastewater flowing out of the sewage outlet is temporarily retained by the U-shaped pipe 2. After the wastewater separates into oil and water in the U-shaped pipe 2, the oil layer at the higher position flows away from the oil drain head 3, while the water layer at the lower position rises along the overflow pipe 5 and leaves the U-shaped pipe 2 from the drain head 4, thus realizing the separation of oil and water in the wastewater. It has the advantages of simple structure and effective oil removal.
[0019] Furthermore, a connecting pipe 6 is provided between the two vertical sections of the U-shaped tube 2, and the connecting pipe 6 is flush with the height of the oil drain head 3.
[0020] The oil layer can flow to the side where the oil drain head 3 is located through the connecting pipe 6, which facilitates smooth oil drainage.
[0021] Furthermore, the upper and lower parts of the vertical section of the U-shaped pipe 2 are each provided with a set of oil drain head 3, a drain head 4, and a connecting pipe 6. The two drain heads 4 are connected to the same overflow pipe 5. The outer ends of the oil drain head 3 and the drain head 4 are provided with flanges 7. The oil drain head 3 and the drain head 4 in one of the two sets are connected to the oil drain pipe 12 and the drain pipe 13 respectively by connecting bolts 8. The oil drain head 3 and the drain head 4 in the other set are connected to the sealing plate 14 by connecting bolts 8.
[0022] When there is a large amount of sewage to be temporarily stored, the oil drain pipe 12 and the drain pipe 13 are installed on a set of oil drain heads 3 and drain heads 4 located at a high position. When there is a small amount of sewage to be temporarily stored, the oil drain pipe 12 and the drain pipe 13 are installed on a set of oil drain heads 3 and drain heads 4 located at a low position, which is flexible in use.
[0023] Furthermore, the inner end of the oil drain head 3 is provided with an oil inlet pipe 9 with its opening facing downwards.
[0024] By using the oil inlet pipe 9, the sewage flowing into the U-shaped pipe 2 is prevented from being directly poured into the oil outlet head 3, thus improving the oil-water separation effect.
[0025] Furthermore, a drain head 10 is provided at the bottom of the middle section of the curved part of the U-shaped pipe 2, a drain pipe 13 is connected to the drain head 10, and a valve 11 is provided on the drain head 10.
[0026] During post-cleanup, the residual water in the U-shaped pipe 2 is drained through the drain head 10, and the opening and closing of the drain head 10 is controlled by the valve 11.
[0027] Working principle and usage process of this utility model:
[0028] Attach the first end of the U-shaped pipe 2 to the drain outlet 1. Connect the oil drain pipe 12 and the drain pipe 13 to the same set of oil drain head 3 and drain head 4, allowing sewage to flow into the U-shaped pipe 2. The oil layer enters the oil drain head 3 through the oil inlet pipe 9 and then exits the U-shaped pipe 2, while the water layer enters the drain head 4 through the overflow pipe 5 and then exits the U-shaped pipe 2, thus achieving oil-water separation. For subsequent cleaning, the user opens valve 11 to drain any remaining sewage from the U-shaped pipe 2, ensuring its cleanliness.
[0029] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.
Claims
1. A short pipe for draining oil and water, characterized in that: The device includes a U-shaped pipe, the first end of which is connected to a drain outlet and the second end is sealed. An oil drain head is provided on the side wall of the vertical section of the U-shaped pipe at the first end, and a drain head is provided on the side wall of the vertical section of the U-shaped pipe at the second end. The oil drain head is higher than the drain head. An overflow pipe is provided along the axis of the vertical section of the U-shaped pipe at the second end. The overflow pipe is connected to the drain head, and the lower end of the overflow pipe extends to the curved part of the U-shaped pipe.
2. The oil-water drain pipe according to claim 1, characterized in that: A connecting pipe is provided between the two vertical sections of the U-shaped tube, and the connecting pipe is flush with the height of the oil drain head.
3. The oil-water drain pipe according to claim 2, characterized in that: The upper and lower parts of the vertical section of the U-shaped tube are each provided with a set of oil drain head, a drain head, and a connecting pipe. The two drain heads are connected to the same overflow pipe. The outer ends of the oil drain head and the drain head are provided with flanges. The oil drain head and the drain head in one of the two sets are connected to the oil drain pipe and the drain pipe respectively by connecting bolts. The oil drain head and the drain head in the other set are connected to the sealing plate by connecting bolts.
4. The oil-water drain pipe according to claim 1, characterized in that: The inner end of the oil drain head is provided with an oil inlet pipe with an opening facing downwards.
5. The oil-water drain pipe according to claim 1, characterized in that: The bottom of the middle section of the curved part of the U-shaped tube is provided with a drain head, a drain pipe is connected to the drain head, and a valve is provided on the drain head.