Oil-water separation device

Abstract

The utility model provides an oil-water separation device, which solves the technical problem that the separation effect is reduced due to blockage or hardening caused by untimely treatment of oil particles in actual operation in the existing separation technologies such as a PPI type inclined plate type oil-water separation tank, a CPI type corrugated inclined plate type oil separation device, a CPS coalescence plate separator and the like. The method can be widely applied to the sewage treatment field; the device specifically comprises a box body, a separation cabin, a buffer cabin and a water collection cabin which are independent of one another are arranged in the box body, a corrugated plate is obliquely arranged in the separation cabin, a water inlet pipeline is arranged above the corrugated plate, and a plurality of water outlets are formed in the water inlet pipeline; an oil scraping mechanism is further arranged above the water inlet pipeline, the oil scraping mechanism comprises a transmission chain, a plurality of oil removing plates are fixedly connected to the transmission chain, the length of the oil removing plates is set according to the thickness of oil stains above the liquid level of sewage after oil-liquid separation, and an oil discharge port is formed in the tail end of the transmission chain in the movement direction below the oil removing plates.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to an oil-water separation device. Background Art

[0002] Chemical oil-water coalescence separation can be used to separate oil-water mixtures. Existing separation technologies include PPI-type inclined plate oil-water separation tanks, CPI-type corrugated inclined plate oil separators, and CPS coalescing plate separators. Different technologies are used to achieve oil-water separation effects. The separation structures include parallel plates and corrugated plates. The corrugated plates have a larger separation area, but the movement of oil particles in the oil separators with some separation structures is countercurrent, floating upward along the wave crests, increasing the floating distance of the oil droplets and low separation efficiency. In addition, in actual operation, blockage or compaction problems often occur due to untimely treatment of oil particles, resulting in a decrease in separation effect. Utility Model Content

[0003] The purpose of this utility model is to solve the deficiencies of the above-mentioned technology and provide an oil-water separation device.

[0004] To this end, the utility model provides an oil-water separation device, including a box body, in which three independent separation cabins, a buffer cabin and a water collection cabin are arranged. A corrugated plate is arranged obliquely in the separation cabin, a water inlet pipe is arranged above the corrugated plate, and a plurality of water outlets are opened on the water inlet pipe.

[0005] An oil scraping mechanism is also provided above the water inlet pipe. The oil scraping mechanism includes a transmission chain. A plurality of oil removal plates are fixedly connected to the transmission chain. The length of the oil removal plates is set according to the thickness of the oil stains above the sewage liquid surface after oil-liquid separation. An oil drain port is provided at the end of the movement direction of the transmission chain below.

[0006] Furthermore, the lower part of the side wall of the separation cabin is connected with the buffer cabin, an overflow port is provided on the side wall between the buffer cabin and the water collecting cabin, a sleeve is provided on the side wall above the overflow port, a telescopic rod is provided inside the sleeve, and the bottom end of the telescopic rod is fixedly connected with a water outlet weir plate, and the shape of the water outlet weir plate is adapted to the shape of the overflow port.

[0007] Furthermore, a thread is provided on the upper portion of the telescopic rod, and a positioning knob is provided on the thread, so that the bottom of the water outlet weir plate is slidably matched with the side wall below the overflow port.

[0008] Furthermore, a drain port and a liquid level detector are provided at the bottom of the water collecting tank to detect the liquid level inside the water collecting tank.

[0009] Furthermore, sewage pipes are provided at the bottom of the separation cabin, the buffer cabin and the water collection cabin, and a vent is provided at the top of the separation cabin.

[0010] The utility model provides an oil-water separation device, which has the following beneficial effects:

[0011] The utility model can coalesce the floating oil droplets by relying on the hydrophobic and oleophilic properties of the corrugated plate to produce larger oil droplets. The corrugated plate with a smaller wave height and a small equivalent diameter can maintain a laminar flow state under a larger processing volume and a shorter residence time, thereby ensuring that the coalesced oil droplets will not be broken, and at the same time, the utility model also enhances its own ability to absorb fine oil droplets. It is a new device that combines the shallow pool principle with the coalescence technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model from the front;

[0013] Figure 2 It is a schematic structural diagram of the utility model from a top view;

[0014] Figure 3 It is a schematic structural diagram of the utility model from the side;

[0015] Figure 4 yes Figure 1 Enlarged view of point A in the middle;

[0016] Markings in the figure: 1. Box body; 2. Separation cabin; 3. Buffer cabin; 4. Water collecting cabin; 5. Corrugated plate; 6. Water inlet pipe; 7. Water outlet; 8. Water inlet; 9. Oil scraper mechanism; 10. Transmission chain; 11. Oil removal plate; 12. Water outlet weir plate; 13. Drain outlet; 14. Oil drain outlet; 15. Sewage pipe; 16. Vent; 17. Liquid level detector; 18. Casing; 19. Telescopic rod; 20. Overflow port; 21. Positioning knob. DETAILED DESCRIPTION

[0017] The present invention is further described below with reference to the accompanying drawings and specific embodiments to facilitate understanding of the present invention. The methods used in the present invention are conventional methods unless otherwise specified; the raw materials and devices used are conventional commercially available products unless otherwise specified.

[0018] like Figure 1As shown, the utility model provides an oil-water separation device, including a housing 1, in which three independent separation cabins 2, a buffer cabin 3, and a water collection cabin 4 are arranged. A corrugated plate 5 is arranged in an inclined manner in the separation cabin 2 at an angle of 60 degrees. A water inlet pipe 6 is arranged above the corrugated plate 5, and a plurality of water outlets 7 are opened on the water inlet pipe 6. When in use, sewage enters the water inlet pipe 6 from the water inlet 8, and the water inlet pipe 6 flows out through the plurality of water outlets 7, forming a flow force in the separation cabin 2. When the sewage passes through the corrugated plate 5, a coarsening reaction occurs. Due to the larger surface area and unique cross-flow state of the corrugated plate 5, the probability of collision of pollutants increases exponentially. Relatively light substances such as oil will float along the lower surface of the corrugated plate 5, and solid impurities such as mud with a larger specific gravity will sink along the upper surface of the corrugated plate 5, and the sinking speed is significantly increased, resulting in a significant separation effect. Furthermore, the inclined corrugated plate 5 can generate larger oil droplets when the floating oil droplets coalesce, thereby ensuring that the coalesced oil droplets will not be broken, and also enhancing the ability to absorb fine oil droplets.

[0019] like Figure 4 As shown, the lower sidewall of the separation cabin 2 is connected to the buffer cabin 3. An overflow port 20 is provided on the sidewall between the buffer cabin 3 and the water collection tank 4. A sleeve 18 is provided on the sidewall above the overflow port 20. A telescopic rod 19 is provided inside the sleeve 18. The bottom end of the telescopic rod 19 is fixedly connected to the outlet weir plate 12. The shape of the outlet weir plate 12 is adapted to the shape of the overflow port 20. The upper part of the telescopic rod 19 is provided with a thread, and a positioning knob 21 is provided on the thread. The bottom of the outlet weir plate 12 slides with the sidewall below the overflow port 20. When the outlet weir plate 12 overlaps with the overflow port 20, the overflow port 20 is in a closed state, and the purified water will accumulate in the buffer cabin 3 after dissipating energy. After the outlet weir plate 12 moves downward, a gap is formed between the top of the outlet weir plate 12 and the overflow port 20. The purified water above the top edge of the outlet weir plate 12 will enter the water collection tank 4. In addition, the outlet weir plate 12 is adjusted according to the storage requirements of the buffer chamber 3 by rotating the positioning knob 21 to adjust the length of the telescopic rod 19 outside the box body 1, thereby driving the outlet weir plate 12 to move up and down, changing the opening height of the outlet weir plate 12 on the overflow port 20, and changing the liquid level height in the buffer chamber 3.

[0020] like Figure 1 As shown, an oil scraper mechanism 9 is also provided above the water inlet pipe 6. The oil scraper mechanism 9 includes a transmission chain 10 to which are fixedly connected a plurality of oil removal plates 11. The length of the oil removal plates 11 is set according to the thickness of the oil above the sewage surface after oil-liquid separation. An oil drain port 14 is provided at the end of the lower transmission chain 10 in the direction of movement. The transmission chain 10 drives the oil removal plates 11 to move synchronously, pushing the floating oil and scum above the sewage surface to the oil drain port 14 for discharge.

[0021] like Figure 2As shown, the bottom of the separation cabin 2, the buffer cabin 3 and the water collection cabin 4 are all provided with a sewage pipe 15, which can discharge the sediment at the bottom of the sewage through the sewage pipe 15 after the sewage is left to stand. A vent 16 is provided on the top of the separation cabin 2. Figure 3 As shown, a drain port 13 and a liquid level detector 17 are provided at the bottom of the water collecting chamber 4 for detecting the liquid level inside the water collecting chamber 4 .

[0022] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 on the present invention.

[0023] However, the above description is merely a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. An oil-water separation device, comprising a box body, in which three independent separation cabins, a buffer cabin and a water collection cabin are arranged, characterized in that: A corrugated plate is arranged obliquely in the separation cabin, a water inlet pipe is arranged above the corrugated plate, and a plurality of water outlets are opened on the water inlet pipe; An oil scraping mechanism is also provided above the water inlet pipe. The oil scraping mechanism includes a transmission chain. A plurality of oil removal plates are fixedly connected to the transmission chain. The length of the oil removal plates is set according to the thickness of the oil stains above the sewage liquid surface after oil-liquid separation. An oil drain port is provided at the end of the movement direction of the transmission chain below.

2. The oil-water separation device according to claim 1, characterized in that: The lower part of the side wall of the separation cabin is connected with the buffer cabin. An overflow port is provided on the side wall between the buffer cabin and the water collecting cabin. A sleeve is provided on the side wall above the overflow port. A telescopic rod is provided in the sleeve. The bottom end of the telescopic rod is fixedly connected with a water outlet weir plate. The shape of the water outlet weir plate is adapted to the shape of the overflow port.

3. The oil-water separation device according to claim 2, characterized in that: A thread is provided on the upper part of the telescopic rod, and a positioning knob is provided on the thread. The bottom of the water outlet weir plate is slidably matched with the side wall below the overflow port.

4. An oil-water separation device according to any one of claims 1 to 3, characterized in that: A drain port and a liquid level detector are also provided at the bottom of the water collecting tank to detect the liquid level inside the water collecting tank.

5. The oil-water separation device according to claim 4, characterized in that: The bottoms of the separation cabin, buffer cabin and water collection cabin are all provided with sewage pipes, and the top of the separation cabin is provided with a vent.

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