CN217458916U - Oil-water separation device for treating oily wastewater - Google Patents

Abstract

The invention discloses an oil-water separation device for treating oily wastewater, which comprises a device main body, a filter vat, a primary oil-water separation mechanism and a secondary oil-water separation cavity, and is characterized in that a screw cap is connected with the top of the device main body in a threaded manner, the filter vat is communicated with the inside of the device main body through a water inlet pipe, a slag separation basket is detachably arranged in the filter vat, the water inlet pipe is fixedly connected with an impact pipe, an impact reflux plate is fixedly arranged on the inner wall of the device main body, a conical reflux plate is fixedly arranged on the inner wall of the device main body below the impact reflux plate, a water guide circular groove is formed at the bottom of the conical reflux plate, the primary oil-water separation mechanism is arranged in the water guide circular groove, a support mechanism for fixing the primary oil-water separation mechanism is fixedly arranged on the inner wall of the device main body, the secondary oil-water separation cavity is arranged below the support mechanism, a centrifugal mechanism is arranged in the secondary oil-water separation cavity, an oil discharge pipe is arranged on the side wall of the secondary oil-water separation cavity, The bottom of the water outlet pipe is provided with a drain pipe, and the device can efficiently separate oil from water and is easy to clean.

Description

Oil-water separation device for treating oily wastewater

Technical Field

The invention relates to the technical field of oil-water separation equipment, in particular to an oil-water separation device for treating oily wastewater.

Background

The oil-water separator is a device and is divided into a catering oil-water separator and an industrial oil-water separator. The catering oil-water separator is used for treating sewage in the catering industry, along with the development of the third industry, the hotel industry is increased, oil stains in kitchen waste sewage discharge are directly discharged into peripheral rivers and lakes due to the fact that the oil stains are not separated and recovered, a sewer pipeline is prone to being blocked, water environment is prone to being seriously polluted, the restaurant oil-water separator is produced due to the fact that the oil stains are not separated and recovered, the existing oil-water separator is usually used for separating oil from water through compressed air or a coalescence filter element to separate oil from water, separation efficiency is low, effects are not ideal, and the coalescence filter element is prone to being blocked and is inconvenient to clean.

Disclosure of Invention

The invention aims to provide an oil-water separation device for treating oily wastewater, which aims to solve the technical problem.

In order to achieve the purpose, the invention provides the following technical scheme: an oil-water separation device for treating oily wastewater comprises a device main body, a filter barrel, a primary oil-water separation mechanism and a secondary oil-water separation cavity, wherein a plurality of support legs are fixedly arranged at the bottom of the device main body, a screw cap is connected to the top of the device main body in a threaded manner, a water inlet pipe is connected to the side wall of the top of the device main body in a penetrating manner, the filter barrel is communicated with the inside of the device main body through the water inlet pipe, a slag separation basket is detachably arranged in the filter barrel, an impact pipe is fixedly connected to one end of the water inlet pipe, which is positioned in the device main body, a high-pressure water pump is arranged in the impact pipe and is fixedly connected to the inner wall of the device main body, an impact reflux plate for separating oil drops is fixedly arranged on the inner wall of the device main body, a conical guide plate is fixedly arranged below the impact reflux plate, and a circular water guide groove is formed at the bottom of the conical guide plate, the primary oil-water separation mechanism is arranged in the water guide circular groove and comprises an outer barrel and an inner barrel, a first water drainage groove is formed in an annular array on the side wall of the outer barrel, a second water drainage groove is formed in an annular array on the side wall of the inner barrel, the inner barrel is embedded in the outer barrel, the first water drainage groove and the second water drainage groove are arranged in a staggered mode, a supporting mechanism used for fixing the primary oil-water separation mechanism is fixedly arranged on the inner wall of the device main body, the secondary oil-water separation cavity is arranged below the supporting mechanism, a centrifugal mechanism is arranged at the bottom of the secondary oil-water separation cavity, an oil drainage pipe penetrates through the side wall of the top of the secondary oil-water separation cavity, an oil drainage pipe valve is arranged on the oil drainage pipe, a water outlet pipe penetrates through the side wall of the bottom of the secondary oil-water separation cavity, a water outlet pipe valve is arranged on the water outlet pipe, and a drain pipe penetrates through the bottom of the secondary oil-water separation cavity, and a drain pipe valve is arranged on the drain pipe.

Preferably, the slag separation basket comprises a leakage net and a placing ring, the leakage net is of a cylindrical structure with one open end, the placing ring is arranged at the open end of the leakage net, a mounting ring is fixedly arranged on the inner wall of the filter barrel, the leakage net is in sliding connection with the inner wall of the mounting ring, and the placing ring is abutted to the mounting ring.

Preferably, the impact reflux plate is provided with two, one the impact reflux plate is provided on one side of the inner wall of the device body opposite to the impact pipe, the other impact reflux plate is provided on the inner wall of the device body opposite to one of the inner wall of the device body and the lower part of the inner wall, and the other side of the impact reflux plate is an arc surface.

Preferably, the number of the first water drainage grooves is the same as that of the second water drainage grooves, the width of the second water drainage grooves is smaller than the interval between the first water drainage grooves, and the length of the second water drainage grooves is larger than that of the first water drainage grooves.

Preferably, the end face of the outer barrel is provided with a caulking groove, the inner barrel is rotatably connected with the caulking groove in a clearance connection mode, and the height of the inner barrel is larger than the depth of the caulking groove.

Preferably, the inner wall of the top of the outer barrel is hinged with a handle belt, the inner wall of the top end of the inner barrel is fixedly provided with a rotating frame, and the rotating frame is composed of a plurality of metal strips.

Preferably, the supporting mechanism includes backup pad, support ring and the fixed spacing ring of establishing on the support ring, the backup pad is fixed evenly to be established the support ring lateral wall, the backup pad is kept away from the one end of support ring with device main part inner wall fixed connection, outer barrel bottom is opened to be used for the card to go into the spacing annular of spacing ring, outer bucket with water guide circular slot sliding connection and highest point with water guide circular slot highest point keeps level.

Preferably, the centrifugal mechanism comprises a motor, a centrifugal shaft and a plurality of centrifugal blades, the motor is fixedly arranged in the bottom of the device main body, the output end of the motor is fixedly connected with the centrifugal shaft, and the centrifugal blades are symmetrically arranged on the centrifugal shaft and are uniformly arranged along the centrifugal shaft.

Preferably, second grade water oil separating chamber is kept away from on the lateral wall of outlet pipe, and be located run through between outlet pipe and the oil extraction pipe and be equipped with the back flow, the back flow is kept away from the one end in second grade water oil separating chamber is located the filter vat top, be equipped with the backwash pump in the back flow and with device main part outer wall fixed connection, the back flow is for can splicing the water pipe.

Compared with the prior art, the invention has the beneficial effects that: through the arrangement of the leakage net, the placing ring and the mounting ring, when impurities of the slag separation basket are accumulated, the slag separation basket is convenient to clean, and the cleaning convenience is improved; through the arrangement of the impact pipe, the high-pressure water pump and the impact reflux plate, oil drops in the oily wastewater float, and a primary oil-water separation mechanism is favorable for oil-water separation; the arrangement of the outer barrel, the inner barrel, the first drainage groove, the second drainage groove, the rotating frame and the handle belt plays a role in oil-water separation of oily wastewater, so that most of grease is left in the primary oil-water separation mechanism; by the arrangement of the centrifugal mechanism, the return pipe and the return pump, the centrifugal mechanism accelerates oil-water separation, and the return pipe returns the wastewater of the oil-water separation layer for oil-water separation again, so that the water discharged by the secondary oil-water separation cavity is almost free of grease, and the oil-water separation efficiency is greatly improved; the invention can separate oil and water of oily wastewater with high efficiency, and the device is clean, simple and convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the external structure of the present embodiment;

FIG. 2 is a front sectional view of the present embodiment;

FIG. 3 is an enlarged view of the embodiment A;

FIG. 4 is a view of the slag-trapping basket of the present embodiment;

FIG. 5 is a schematic view of the structure of the impact reflow plate of this embodiment;

FIG. 6 is a first stage oil-water separation mechanism of the present embodiment;

FIG. 7 is a bottom view of the primary oil-water separation mechanism of the present embodiment;

FIG. 8 is an exploded view of the primary oil-water separation mechanism of the present embodiment;

fig. 9 is a schematic structural view of the support mechanism of the present embodiment.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a device main body; 2. screwing a cover; 3. supporting legs; 4. a filter vat; 5. a water inlet pipe; 6. a slag separation basket; 61. a leakage net; 62. placing a ring; 7. a mounting ring; 8. an impingement tube; 9. a high pressure water pump; 10. impacting the return plate; 11. a conical deflector; 12. a first-stage oil-water separation mechanism; 121. an outer tub; 122. an inner barrel; 13. a support mechanism; 131. a support plate; 132. a support ring; 133. a limiting ring; 14. a limiting ring groove; 15. a first drainage tank; 16. caulking grooves; 17. a second water discharge tank; 18. a rotating frame; 19. a handle strap; 20. a secondary oil-water separation cavity; 21. a centrifugal mechanism; 211. a motor; 212. a centrifugal shaft; 213. a centrifugal blade; 22. an oil discharge pipe; 23. an oil drain pipe valve; 24. a water outlet pipe; 25. a water outlet pipe valve; 26. a blow-off pipe; 27. a drain pipe valve; 28. a return pipe; 29. a reflux pump; 30. a water guide circular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: an oil-water separation device for treating oily wastewater comprises a device main body 1, a filter barrel 4, a primary oil-water separation mechanism 12 and a secondary oil-water separation cavity 20, wherein a plurality of support legs 3 are fixedly arranged at the bottom of the device main body 1, a screw cap 2 is connected at the top of the device main body 1 through threads, a water inlet pipe 5 is connected with the side wall of the top of the device main body 1 in a penetrating way, the filter barrel 4 is communicated with the inside of the device main body 1 through the water inlet pipe 5, a slag separation basket 6 is detachably arranged in the filter barrel 4, an impact pipe 8 is fixedly connected at one end of the water inlet pipe 5 positioned in the device main body 1, a high-pressure water pump 9 is arranged in the impact pipe 8 and is fixedly connected on the inner wall of the device main body 1, an impact reflux plate 10 for separating oil drops is fixedly arranged on the inner wall of the device main body 1, a conical guide plate 11 is fixedly arranged below the impact reflux plate 10 on the inner wall of the device main body 1, and a water guide circular groove 30 is formed at the bottom of the conical guide plate 11, the primary oil-water separation mechanism 12 is arranged in the water guide circular groove 30, the primary oil-water separation mechanism 12 comprises an outer barrel 121 and an inner barrel 122, a first water drainage groove 15 is formed in an annular array on the side wall of the outer barrel 121, a second water drainage groove 17 is formed in an annular array on the side wall of the inner barrel 122, the inner barrel 122 is embedded in the outer barrel 121, the first water drainage groove 15 and the second water drainage groove 17 are arranged in a staggered mode, a supporting mechanism 13 for fixing the primary oil-water separation mechanism 12 is fixedly arranged on the inner wall of the device main body 1, a secondary oil-water separation cavity 20 is arranged below the supporting mechanism 13, a centrifugal mechanism 21 is arranged at the bottom of the secondary oil-water separation cavity 20, an oil drainage pipe 22 is arranged on the side wall of the top of the secondary oil-water separation cavity 20 in a penetrating mode, an oil drainage pipe valve 23 is arranged on the oil drainage pipe 22, a water outlet pipe 24 is arranged on the side wall of the bottom of the secondary oil-water separation cavity 20 in a penetrating mode, a water outlet pipe 25 is arranged on the bottom of the secondary oil-water separation cavity 20 in a penetrating mode, a draining pipe 26 is arranged, a drain pipe valve 27 is arranged on the drain pipe 26.

Specifically, it is including leaking net 61 and placing ring 62 to separate sediment basket 6, it is the open cylindrical structure of one end to leak net 61, it establishes at leaking net 61 open end to place ring 62 ring, 4 inner walls of filter vat are fixed and are equipped with collar 7, leak net 61 and 7 inner wall sliding connection of collar, it is inconsistent with collar 7 to place ring 62, to place ring 62 on arranging collar 7 in, it slides into filter vat 4 along collar 7 inner wall to leak net 61, it can be stable install in filter vat 4 and filter the impurity in the oily waste water to separate sediment basket 6, when separating sediment basket 6 interior impurity and piling up, can take out the cleanness with separating sediment basket 6, improve clean convenience.

Specifically, the impact reflux plates 10 are provided with two impact reflux plates 10, one impact reflux plate 10 is arranged on one side of the inner wall of the device main body 1 opposite to the impact pipe 8, the other impact reflux plate 10 is arranged on the opposite surface of the inner wall of the device main body 1 and one of the impact reflux plates and is arranged at the lower position, the opposite surface of the two impact reflux plates 10 is an arc surface, oily wastewater is sprayed to one impact reflux plate 10 under the pressurization of the high-pressure water pump 9, the impact reflux plate 10 reflects the oily wastewater to the other impact reflux plate 10, the arc surfaces of the two impact reflux plates 10 enable the oily wastewater to generate certain back-and-forth movement to generate centrifugal force and inertia force, and water vapor drives oil drops to float upwards under the action of the centrifugal force, the inertia force and the impact force, so that the large oil drops float and the oil-water separation of the first-level oil-water separation mechanism 12 is facilitated.

Specifically, the first water drainage grooves 15 are consistent with the second water drainage grooves 17 in number, the width of the second water drainage grooves 17 is smaller than the interval between the first water drainage grooves 15, the second water drainage grooves 17 can be completely blocked by the interval between the first water drainage grooves 15, oil drops are blocked by the interval, oil and water are separated, the length of the second water drainage grooves 17 is larger than that of the first water drainage grooves 15, the second water drainage grooves 17 are higher than the end face of the outer barrel 121, and oil-containing wastewater can flow into the first-stage oil-water separation mechanism 12.

Specifically, the end face of the outer barrel 121 is provided with the caulking groove 16, the inner barrel 122 is rotatably connected with the caulking groove 16, the connection is a gap connection, most oil in the oily wastewater can be retained in the primary shunting mechanism 12, water flows away through a gap between the inner barrel 122 and the outer barrel 121, the height of the inner barrel 122 is larger than the depth of the caulking groove 16, and the inner barrel 122 is convenient to take out.

Specifically, outer bucket 121 top inner wall articulates has handle area 19, conveniently takes outer bucket 121 and cleans, and inner bucket 122 top inner wall is fixed to be equipped with rotating turret 18, and rotating turret 18 comprises many metal strips, rotates the running water clearance between outer bucket 121 and the interior bucket 122 of rotating turret 18 regulation, and when oily waste water was too thick, the degree of coincidence between first water drainage tank 15 and the second water drainage tank 17 can be properly adjusted with this increase water clearance.

Specifically, the supporting mechanism 13 includes a supporting plate 131, a supporting ring 132 and a limiting ring 133 fixedly arranged on the supporting ring 132, the supporting plate 131 is fixedly and uniformly arranged on the side wall of the supporting ring 132, one end of the supporting plate 131 far away from the supporting ring 132 is fixedly connected with the inner wall of the device main body 1, a limiting ring groove 14 for clamping the limiting ring 133 is arranged at the bottom of the outer barrel 121, the outer barrel 121 is slidably connected with the water guiding circular groove 30, and the highest position of the outer barrel 121 is flush with the highest position of the water guiding circular groove 30, so that the primary oil-water separation mechanism 12 is kept stable in the device main body 1, and the highest position of the outer barrel 121 and the water guiding circular groove 30 is flush with each other, which is beneficial for the oily wastewater to enter the primary oil-water separation mechanism 12 from the second drainage groove 17 higher than the outer barrel 121.

Specifically, the centrifugal mechanism 21 includes a motor 211, a centrifugal shaft 212 and a plurality of centrifugal blades 213, the motor 211 is fixedly disposed in the bottom of the apparatus main body 1, an output end of the motor 211 is fixedly connected to the centrifugal shaft 212, the centrifugal blades 213 are symmetrically disposed on the centrifugal shaft 212 and are uniformly disposed along the centrifugal shaft 212, and the motor 211 drives the centrifugal shaft 212 to rotate, so as to drive the centrifugal blades 213 to rotate, and rapidly stir the oily wastewater to generate centrifugal force, so that the oily wastewater is rapidly layered.

Specifically, second grade oil water separating chamber 20 is kept away from on the lateral wall of outlet pipe 24, and be located and run through between outlet pipe 24 and the oil extraction pipe 22 and be equipped with back flow 28, back flow 28 keeps away from second grade oil water separating chamber 20 one end and is located the filter vat 4 top, be equipped with backwash pump 29 in the back flow 28 and with device main part 1 outer wall fixed connection, start backwash pump 29, the waste water of oil water layering department is once more separated in carrying filter vat 4 through back flow 28, improve oil water separation degree, back flow 28 is for splicing the water pipe, make things convenient for the concatenation and the dismantlement of back flow 28.

One specific application example of this embodiment is:

when the device is used, oily wastewater is introduced from the filter barrel 4, impurities in the oily wastewater are left in the slag separation basket 6, the oily wastewater enters the device main body 1 from the water inlet pipe 5, the oily wastewater is sprayed out from the impact pipe 8 to one impact reflux plate 10 under the pressurization of the high-pressure water pump 9, the impact reflux plate 10 reflects the oily wastewater to the other impact reflux plate 10, the arc surfaces of the two impact reflux plates 10 are arranged to enable the oily wastewater to generate certain back-and-forth motion to generate centrifugal force and inertial force, under the action of the centrifugal force, the inertial force and the impact force, water vapor drives oil drops to float upwards, large oil drops float, the oily wastewater flows into the first-stage oil-water separation mechanism 12 along the conical guide plate 11, the large oil drops are left in the first-stage oil-water separation mechanism 12, water and a small part of oil flow away through a gap between the outer barrel 121 and the inner barrel 122 and flow into the second-stage oil-water separation chamber 20, the primary separation of oil and water is realized, if the oily wastewater is too viscous, the overlap ratio between the first drainage groove 15 and the second drainage groove 17 can be properly adjusted by rotating the inner barrel 122 through the rotating frame 18 so as to increase the water passing gap, the viscous oily wastewater is prevented from being blocked and blocked in the primary oil-water separation mechanism 12, the practicability of the device is improved, under the centrifugal action of the centrifugal mechanism 21, the oily wastewater is quickly layered, water is at the lower layer, oil is at the upper layer, the water at the oil-water layered part flows back to the filter barrel 4 through the return pipe 28 to be separated again, water is discharged from the water outlet pipe 24, oil is beaten away from the oil discharge pipe 22 to realize the final oil-water separation, the oil-water separation degree is high, when the device is clean, the sewage discharge pipe valve 27 can be opened to discharge sewage, the slag separation basket 6 is taken out and cleaned, the rotary cover 2 is unscrewed, the lifting handle belt 19 is lifted to take out the primary oil-water separation mechanism 12, and grease in the primary oil-water separation mechanism 12 is poured out, the outer tub 121 and the inner tub 122 are separated for cleaning.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims (9)

1. The utility model provides a handle oil water separator of oily waste water, includes device main part (1), filter vat (4), first grade oil-water separating mechanism (12) and second grade oil-water separating chamber (20), its characterized in that: the device is characterized in that a plurality of supporting legs (3) are fixedly arranged at the bottom of the device main body (1), a screw cap (2) is in threaded connection with the top of the device main body (1), a water inlet pipe (5) is connected to the side wall of the top of the device main body (1) in a penetrating manner, a filter barrel (4) is communicated with the inside of the device main body (1) through the water inlet pipe (5), a slag separation basket (6) is detachably arranged in the filter barrel (4), an impact pipe (8) is fixedly connected to one end of the water inlet pipe (5) in the device main body (1), a high-pressure water pump (9) is arranged in the impact pipe (8) and is fixedly connected to the inner wall of the device main body (1), an impact reflux plate (10) for separating oil drops is fixedly arranged on the inner wall of the device main body (1), a conical guide plate (11) is fixedly arranged below the impact reflux plate (10) on the inner wall of the device main body (1), the bottom of the conical guide plate (11) is provided with a water guide circular groove (30), the primary oil-water separation mechanism (12) is arranged in the water guide circular groove (30), the primary oil-water separation mechanism (12) comprises an outer barrel (121) and an inner barrel (122), a first water drainage groove (15) is formed in an annular array on the side wall of the outer barrel (121), a second water drainage groove (17) is formed in an annular array on the side wall of the inner barrel (122), the inner barrel (122) is embedded in the outer barrel (121) and enables the first water drainage groove (15) and the second water drainage groove (17) to be arranged in a staggered mode, a supporting mechanism (13) used for fixing the primary oil-water separation mechanism (12) is fixedly arranged on the inner wall of the device main body (1), the secondary oil-water separation cavity (20) is arranged below the supporting mechanism (13), a centrifugal mechanism (21) is arranged at the bottom of the secondary oil-water separation cavity (20), and an oil drainage pipe (22) penetrates through the side wall of the top of the secondary oil-water separation cavity (20), be equipped with oil drain pipe valve (23) on oil extraction pipe (22), second grade oil water separation chamber (20) bottom lateral wall runs through and is equipped with outlet pipe (24), be equipped with outlet pipe valve (25) on outlet pipe (24), second grade oil water separation chamber (20) bottom runs through and is equipped with blow off pipe (26), be equipped with blow off pipe valve (27) on blow off pipe (26).

2. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: it leaks net (61) and places ring (62) to separate sediment basket (6) including leaking, it is the open cylindrical structure of one end to leak net (61), it establishes to place ring (62) ring leak net (61) open end, filter vat (4) inner wall is fixed and is equipped with collar (7), leak net (61) with collar (7) inner wall sliding connection, place ring (62) with collar (7) are inconsistent.

3. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: strike board (10) of flowing back and be equipped with two, one strike board (10) of flowing back and establish device main part (1) inner wall with strike one side that pipe (8) are relative, another strike board (10) of flowing back and establish device main part (1) inner wall and one of them opposite face and lean on the lower position, two strike the one side that board (10) are relative and be the cambered surface.

4. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: the number of the first water drainage grooves (15) is consistent with that of the second water drainage grooves (17), the width of the second water drainage grooves (17) is smaller than the interval between the first water drainage grooves (15), and the length of the second water drainage grooves (17) is larger than that of the first water drainage grooves (15).

5. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: the end face of the outer barrel (121) is provided with a caulking groove (16), the inner barrel (122) is rotatably connected with the caulking groove (16) in a clearance connection mode, and the height of the inner barrel (122) is larger than the depth of the caulking groove (16).

6. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: the inner wall of the top of the outer barrel (121) is hinged with a handle belt (19), the inner wall of the top end of the inner barrel (122) is fixedly provided with a rotating frame (18), and the rotating frame (18) is composed of a plurality of metal strips.

7. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: supporting mechanism (13) include backup pad (131), support ring (132) and fixed spacing ring (133) of establishing on support ring (132), fixed even establishment in backup pad (131) support ring (132) lateral wall, backup pad (131) are kept away from the one end of support ring (132) with device main part (1) inner wall fixed connection, outer bucket (121) bottom is opened and is used for the card to go into spacing annular (14) of spacing ring (133), outer bucket (121) with water guide circular slot (30) sliding connection and highest point with water guide circular slot (30) highest point is held level.

8. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: centrifugal mechanism (21) includes motor (211), centrifugal axle (212) and centrifugal blade (213), motor (211) are fixed to be established in device main part (1) bottom, motor (211) output with centrifugal axle (212) fixed connection, centrifugal blade (213) symmetry is established on centrifugal axle (212) and along centrifugal axle (212) evenly are equipped with a plurality ofly.

9. The oil-water separator for treating oily wastewater according to claim 1, characterized in that: on the lateral wall of outlet pipe (24) was kept away from in second grade oil water separating chamber (20), and was located run through between outlet pipe (24) and oil extraction pipe (22) and be equipped with back flow (28), back flow (28) are kept away from the one end in second grade oil water separating chamber (20) is located filter vat (4) top, be equipped with in back flow (28) backwash pump (29) and with device main part (1) outer wall fixed connection, back flow (28) are for can splicing the water pipe.

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