Oil separation precipitation device

Abstract

The utility model relates to an oil separation precipitation device which comprises an oil separation precipitation barrel, the oil separation precipitation barrel is provided with an inner cavity with a round section, a vertical separation barrel is arranged in the center of the inner cavity, and a plurality of partition plates extending in the radial direction are arranged between the separation barrel and the oil separation precipitation barrel. The partition plates divide a cavity between the isolation barrel and the oil separation precipitation barrel into a water inlet cavity, a plurality of layering cavities and a water drainage cavity which are sequentially arranged, a water inlet communicated with the water inlet cavity is formed in the side wall of the oil separation precipitation barrel, and the water inlet cavity, the layering cavities and the water drainage cavity are sequentially communicated through water passing holes formed in the middles of the partition plates; a water drainage opening communicated with the water drainage cavity is formed in the side wall of the oil separation precipitation cylinder; an oil discharge port communicated with the water inlet cavity, the plurality of layering cavities and the water discharge cavity is formed in the top of the isolation cylinder; and an oil discharge mechanism is arranged in an inner cavity of the isolation cylinder. Solid, water and oil are layered in the water inlet cavity, the layering cavity and the water drainage cavity, and the oil separation rate can be increased through multiple times of separation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water treatment equipment field especially, it is an oil separation and precipitation device. BACKGROUND

[0002] The restaurant wastewater, part industrial wastewater contain a large amount of oil and solid impurities, and the oil forms an oil film on the water surface, which hinders the oxygen in the air from dissolving in the water, leading to the lack of oxygen in the water body, and the conventional aquatic organisms are difficult to survive, in addition, the oil-containing wastewater seeps into the soil, affecting the soil aeration and water exchange. Therefore, the oil-containing wastewater must be treated before being discharged into the natural water body.

[0003] Generally speaking, the density of oil is less than that of water, and it can float on the water surface, while the density of solid impurities is larger, and it can be precipitated to the bottom of the water, so the oil separation and precipitation equipment is usually used to preliminarily treat the oil-containing wastewater to remove most of the oil and solid substances. The existing oil separation and precipitation equipment can refer to CN201820842365.2 - a non-powered oil separation and precipitation tank and other prior art, and the existing equipment usually only performs one-time precipitation and oil separation, and the treatment effect is poor. SUMMARY

[0004] The utility model solves the technical problem that a kind of oil separation and precipitation device can carry out multiple times precipitation and oil separation, and improve the treatment effect.

[0005] To solve the above problems, the utility model adopts the technical scheme as follows: an oil separation and precipitation device, comprising an oil separation and precipitation cylinder, the oil separation and precipitation cylinder has an inner cavity with a circular cross section, a vertical isolation cylinder is arranged at the center of the inner cavity, a plurality of radial extension partitions are arranged between the isolation cylinder and the oil separation and precipitation cylinder, the partitions divide the cavity between the isolation cylinder and the oil separation and precipitation cylinder into a water inlet cavity, a plurality of layered cavities and a water outlet cavity arranged in sequence, a water inlet is arranged on the side wall of the oil separation and precipitation cylinder and communicates with the water inlet cavity, the water inlet cavity, the plurality of layered cavities and the water outlet cavity are communicated in sequence through the water passing holes arranged in the middle of the partitions, and a water outlet is arranged on the side wall of the oil separation and precipitation cylinder and communicates with the water outlet cavity.

[0006] Further, the oil discharge mechanism includes a floating ring, the density of the floating ring is less than that of oil, a flexible oil discharge pipe is arranged in the floating ring, and the oil discharge pipe is connected with an oil discharge pump.

[0007] Further, a support ring is arranged in the isolation cylinder, a positioning boss is arranged on the outer side wall of the support ring, a vertical sliding groove is arranged on the inner side wall of the isolation cylinder, the positioning boss is located in the sliding groove and is in sliding cooperation with the sliding groove, and the floating ring is fixedly arranged on the upper surface of the support ring.

[0008] Further, the support ring is internally fixedly provided with an oil collecting groove, the bottom wall of the oil collecting groove is provided with a filter plate, and the end of the oil discharge pipe is fixed in the oil collecting groove.

[0009] Further, the support ring and the positioning boss are integrally formed plastic rings.

[0010] Further, the floating ring is an air bag.

[0011] Further, the bottom of the water inlet cavity, the layered cavity and the water discharge cavity is provided with a blowdown pipe.

[0012] Further, the water inlet and the water outlet are both arranged in the middle part of the oil separation and precipitation cylinder.

[0013] Further, the partition plates are four and are uniformly distributed around the isolation cylinder.

[0014] The beneficial effects of the utility model are: oil-containing wastewater is introduced into the water inlet cavity through the water inlet, the oil in the water gradually floats to the water surface, the solids are in the lower layer to the water bottom, and the water is in the middle part. Then the water in the water inlet cavity enters the layered cavity through the water passing hole, after multiple layering, the wastewater enters the water discharge cavity, and then is discharged from the water outlet. The solids, water and oil are layered in the water inlet cavity, the layered cavity and the water discharge cavity, and the oil separation rate can be improved through multiple separation. The oil liquid on the water surface of the water inlet cavity, the layered cavity and the water discharge cavity enters the inner cavity of the isolation cylinder through the oil discharge port, and then is discharged by the oil discharge mechanism, so that the oil separation and recovery are realized.

[0015] In the layering process, the water is in the middle position, the oil is on the water surface, and the solid impurities are in the water bottom. When the wastewater enters the various layered cavities and the water discharge cavities in sequence, the oil content in the wastewater gradually decreases, and the oil removal effect is improved through multiple layering. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the front view schematic diagram of the utility model;

[0017] Figure 2 is Figure 1 the enlarged schematic diagram of A part in the middle;

[0018] Figure 3 is Figure 1 the sectional view schematic diagram of B-B;

[0019] Mark: 1 - blowdown pipe; 2 - filter plate; 3 - oil separation and precipitation cylinder; 4 - isolation cylinder; 5 - partition plate; 6 - water inlet cavity; 7 - layered cavity; 8 - water discharge cavity; 9 - water inlet; 10 - water passing hole; 11 - water outlet; 12 - oil discharge port; 13 - support ring; 14 - positioning boss; 15 - floating ring; 16 - oil collecting groove barrel; 17 - oil discharge pipe; 18 - oil discharge pump. DETAILED DESCRIPTION

[0020] The utility model is further explained below in combination with the drawings and examples.

[0021] The oil separation and precipitation device of the utility model, as shown in the figure, comprises an oil separation and precipitation cylinder 3, the oil separation and precipitation cylinder 3 is a cylinder and has an inner cavity with a circular cross section. Figures 1 to 3 The oil separation and precipitation cylinder 3 can adopt a stainless steel cylinder body, the bottom thereof is sealed, and the upper end can be open or sealed by a detachable cover plate. A vertical isolation cylinder 4 is arranged in the center of the inner cavity of the oil separation and precipitation cylinder 3, and the isolation cylinder 4 can also adopt a stainless steel cylinder. The lower end of the isolation cylinder 4 is sealed, and the upper end is open. The water and solid precipitates in the oil separation and precipitation cylinder 3 cannot enter the isolation cylinder 4.

[0022] A plurality of radial extension partitions 5 are arranged between the isolation cylinder 4 and the oil separation and precipitation cylinder 3. The partitions 5 divide the cavity between the isolation cylinder 4 and the oil separation and precipitation cylinder 3 into a water inlet cavity 6, a plurality of layered cavities 7 and a water outlet cavity 8 arranged in sequence. A water inlet 9 communicating with the water inlet cavity 6 is arranged on the side wall of the oil separation and precipitation cylinder 3 and is used for introducing oil-containing wastewater. The water inlet cavity 6, the plurality of layered cavities 7 and the water outlet cavity 8 are communicated in sequence through a water passing hole 10 arranged in the middle of the partition 5. The water in the water inlet cavity 6 can enter the layered cavities 7 through the water passing hole 10, and the water in the layered cavities 7 can enter the next layered cavity 7 or the water outlet cavity 8 through the water passing hole 10. A water outlet 11 communicating with the water outlet cavity 8 is arranged on the side wall of the oil separation and precipitation cylinder 3 and is used for discharging treated water. The water outlet cavity 8 is completely separated from the water inlet cavity 6 by the partition 5, so that the water in the water inlet cavity 6 cannot directly enter the water outlet cavity 8. An oil outlet 12 communicating with the water inlet cavity 6, the plurality of layered cavities 7 and the water outlet cavity 8 is arranged on the top of the isolation cylinder 4. The oil liquid on the liquid surface of the water inlet cavity 6, the plurality of layered cavities 7 and the water outlet cavity 8 can enter the isolation cylinder 4 through the oil outlet 12, so as to realize the collection of oil liquid. An oil discharging mechanism is arranged in the inner cavity of the isolation cylinder 4 and is used for discharging oil liquid.

[0023] In use, the oil-containing wastewater is introduced into the water inlet cavity 6 through the water inlet 9. The water inlet 9 can be arranged in the middle of the water inlet cavity 6. The oil in the water gradually floats to the water surface, the solid particles sink to the bottom of the water, and the water is in the middle part. Then the water in the water inlet cavity 6 enters the layered cavities 7 through the water passing hole 10. After multiple layering, the wastewater enters the water outlet cavity 8 and is then discharged from the water outlet 11. The water outlet 11 can also be arranged in the middle of the water outlet cavity 8. The solid particles, water and oil are layered in the water inlet cavity 6, the layered cavities 7 and the water outlet cavity 8. The oil liquid on the liquid surface of the water inlet cavity 6, the plurality of layered cavities 7 and the water outlet cavity 8 enters the inner cavity of the isolation cylinder 4 through the oil outlet 12 and is then discharged by the oil discharging mechanism, so as to realize the separation and recovery of oil.

[0024] In the process of stratification, water is in the middle position, oil is on the water surface, and solid impurities are at the bottom of water, so the water passing hole 10 is arranged at the middle position of the partition plate 5, the solid impurities and the oil content in the waste water are less at this position, and the oil content in the waste water gradually decreases when the waste water enters the respective stratification cavities 7 and the drainage cavity 8 in turn, and the oil removal effect is improved through multiple stratifications. The height of the oil outlet 12 is slightly higher than the interface height between the waste water and the oil layer, so that the oil can enter the isolation cylinder 4, and water is prevented from entering the isolation cylinder 4.

[0025] In the utility model, the oil discharging mechanism includes a floating ring 15, the density of the floating ring 15 is less than the density of oil, a flexible oil discharging pipe 17 is arranged in the floating ring 15, and the oil discharging pipe 17 is connected with an oil discharging pump 18. The floating ring 15 can float on the surface of oil liquid and automatically move up and down with the change of the liquid level of oil, so that the end of the oil discharging pipe 17 can always be in the oil liquid, and smooth oil discharge is ensured. Under the action of the oil discharging pump 18, the oil liquid can flow to an oil liquid collecting container along the oil discharging pipe 17, and the oil is recycled.

[0026] When the floating ring 15 moves up and down with the liquid level, the stability is poor, in order to improve the stability, a supporting ring 13 is arranged in the isolation cylinder 4, a positioning boss 14 is arranged on the outer side wall of the supporting ring 13, a vertical sliding groove is arranged on the inner side wall of the isolation cylinder 4, the positioning boss 14 is located in the sliding groove and is in sliding cooperation with the sliding groove, and the floating ring 15 is fixedly arranged on the upper surface of the supporting ring 13. The positioning boss 14 and the sliding groove are matched and can play the roles of positioning and guiding, so that the supporting ring 13 and the floating ring 15 can stably move up and down, and the supporting ring 13 and the floating ring 15 are prevented from tilting.

[0027] When the waste water contains light solid impurities, the solid impurities also float to the water surface and easily enter the isolation cylinder 4, in order to prevent the solid impurities from mixing into the recycled oil, an oil collecting groove 16 is fixedly arranged in the supporting ring 13, a filter plate 2 is arranged on the lower end of the oil collecting groove 16, and the end of the oil discharging pipe 17 is fixed in the oil collecting groove 16. The bottom wall (i.e. the filter plate 2) of the oil collecting groove 16 is immersed in the oil liquid, the oil liquid can enter the inside of the oil collecting groove 16 through the filter plate 2, and the solid impurities stay outside the oil collecting groove 16, so that the solid impurities are avoided from mixing into the recycled oil liquid.

[0028] In the utility model, the supporting ring 13 and the positioning boss 14 are integrally formed plastic rings. The plastic material has small density and is easy to float on the surface of oil liquid.

[0029] The floating ring 15 is an air bag, the cost of the air bag is low, the overall density is small, the air bag can float on the surface of oil liquid, and the volume of the air bag can be adjusted by controlling the inflation amount, so that the depth of the oil collecting groove 16 immersed in the oil liquid is adjusted.

[0030] The bottom of the water inlet cavity 6, the layered cavity 7 and the water outlet cavity 8 is provided with a drain pipe 1. The drain pipe 1 is used for discharging the solid impurities deposited to the bottom of the water inlet cavity 6, the layered cavity 7 and the water outlet cavity 8. A drain valve can be arranged on the drain pipe 1. The drain valve is opened every certain period of time, so that the solid deposited substances can be discharged.

[0031] The water inlet 9 and the water outlet 11 are arranged at the middle part of the oil separation and deposition cylinder 3, so that the oil on the water surface or the solid deposition on the water bottom can be prevented from being washed away by the waste water entering the water inlet cavity 6, and the oil on the water surface or the solid deposition on the water bottom can be prevented from flowing out of the water outlet cavity 8 with the water when the water outlet cavity 8 discharges water.

[0032] In the utility model, the partition plate 5 is 4, and is evenly distributed around the isolation cylinder 4, so that the cavity between the isolation cylinder 4 and the oil separation and deposition cylinder 3 is divided into a water inlet cavity 6, two layered cavities 7 and a water outlet cavity 8 arranged in sequence. The number of the partition plate 5 can be increased according to the requirement, so that more layered cavities 7 can be obtained.

[0033] The above only describes the preferred embodiments of the utility model and is not used for limiting the utility model. For the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An oil separation and sedimentation device comprising an oil separation and sedimentation drum (3), characterized in that: The oil separation and precipitation cylinder (3) has a circular cross-section inner cavity, a vertical isolation cylinder (4) is arranged in the center of the inner cavity, a plurality of radial extending baffles (5) are arranged between the isolation cylinder (4) and the oil separation and precipitation cylinder (3), the baffles (5) divide the cavity between the isolation cylinder (4) and the oil separation and precipitation cylinder (3) into a water inlet cavity (6), a plurality of layered cavities (7) and a drainage cavity (8) arranged in sequence, a water inlet (9) in communication with the water inlet cavity (6) is arranged on the side wall of the oil separation and precipitation cylinder (3), the water inlet cavity (6), the plurality of layered cavities (7) and the drainage cavity (8) are in communication in sequence through a water passing hole (10) arranged in the middle of the baffle (5), and a drainage port (11) in communication with the drainage cavity (8) is arranged on the side wall of the oil separation and precipitation cylinder (3); an oil outlet (12) in communication with the water inlet cavity (6), the plurality of layered cavities (7) and the drainage cavity (8) is arranged at the top of the isolation cylinder (4), and an oil discharge mechanism is arranged in the inner cavity of the isolation cylinder (4).

2. The device according to claim 1, characterized in that: The oil discharge mechanism comprises a floating ring (15), the density of the floating ring (15) is less than the density of oil, a flexible oil discharge pipe (17) is arranged in the floating ring (15), and an oil discharge pump (18) is connected to the oil discharge pipe (17).

3. The device according to claim 2, wherein: A supporting ring (13) is arranged in the isolation cylinder (4), a positioning boss (14) is arranged on the outer side wall of the supporting ring (13), a vertically extending sliding groove is arranged on the inner side wall of the isolation cylinder (4), the positioning boss (14) is located in the sliding groove and is in sliding fit with the sliding groove, and the floating ring (15) is fixedly arranged on the upper surface of the supporting ring (13).

4. The device according to claim 3, wherein: An oil collecting groove (16) is fixedly arranged in the supporting ring (13), a filter plate (2) is arranged at the lower end of the oil collecting groove (16), and the end of the oil discharge pipe (17) is fixed in the oil collecting groove (16).

5. The device according to claim 3, wherein: The supporting ring (13) and the positioning boss (14) are integrally formed plastic rings.

6. The device according to claim 2, wherein: The floating ring (15) is an air bag.

7. The device according to claim 1, wherein: The bottom of the water inlet cavity (6), the layered cavities (7) and the drainage cavity (8) is provided with a sewage pipe (1).

8. The device according to claim 1, wherein: The water inlet (9) and the drainage port (11) are both arranged in the middle of the oil separation and precipitation cylinder (3).

9. The device according to claim 1, wherein: The baffle (5) is 4 pieces and is uniformly distributed around the isolation cylinder (4).

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