CN215712128U - Sewage treatment mechanism for water-oil separation - Google Patents

Abstract

The present disclosure relates to a sewage treatment mechanism for water-oil separation, comprising: the sewage treatment container (1) is used for storing a water-oil mixture, and the top of the sewage treatment container is provided with an oil outlet (11); the stirring mechanism (2) is arranged in the sewage treatment container (1) and is used for stirring the water-oil mixture in the sewage treatment container (1) so as to enable the water-oil mixture to be layered; and the oil pumping mechanism (4) is arranged outside the sewage treatment container (1) and comprises an oil suction head (41) capable of moving up and down and an oil delivery pipe (42) connected with the oil suction head (41), wherein the oil suction head (41) is used for penetrating through the oil outlet (11) to extract oil stains after layering, and the oil stains are stored in the oil storage tank (5) through the oil delivery pipe (42). Through above-mentioned technical scheme, this sewage treatment mechanism for water oil separation that openly provides can improve sewage treatment's effect and efficiency, reduces sewage treatment's cost.

Description

Sewage treatment mechanism for water-oil separation

Technical Field

The utility model relates to a sewage treatment technical field specifically relates to a sewage treatment mechanism for water-oil separation.

Background

The coal tar hydrogenation technology is characterized in that coal tar is subjected to a hydrogenation modification process, namely, hydrodesulfurization, hydrodenitrogenation, hydrodeoxygenation, hydrodemetallization and hydrogenation saturation reaction of unsaturated hydrocarbons (such as olefin and aromatic hydrocarbon) are carried out under the action of a catalyst at a certain temperature and pressure to complete desulfurization, saturation of unsaturated hydrocarbons, dehydrogenation reaction and saturation of aromatic hydrocarbon, and finally naphtha and high-quality fuel oil with the product quality reaching the indexes of gasoline and diesel blend oil are obtained, so that the purposes of improving the stability of the coal tar and reducing the sulfur content and the aromatic hydrocarbon content are achieved.

During the coal tar hydrotreating process, a large amount of wastewater and oily sewage are generated. The current sewage treatment method is to transport the wastewater and oily sewage to an accident tank (accident water collecting tank, which is one of the structures required in the sewage treatment process), mix the wastewater and oily sewage, and then send the mixture to a sewage treatment plant for treatment.

However, the difficulty of sewage treatment is greatly increased due to the oil contamination of the mixed oil in the sewage, so that the cost of sewage treatment is high, the treatment efficiency is low, and the treatment effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sewage treatment mechanism for water oil separation can improve sewage treatment's effect and efficiency, reduces sewage treatment's cost.

In order to achieve the above object, the present disclosure provides a sewage treatment mechanism for water-oil separation, the sewage treatment mechanism including: the sewage treatment container is used for storing the water-oil mixture, and the top of the sewage treatment container is provided with an oil outlet; the stirring mechanism is arranged in the sewage treatment container and is used for stirring the water-oil mixture in the sewage treatment container so as to enable the water-oil mixture to be layered; and the oil pumping mechanism is arranged outside the sewage treatment container and comprises an oil suction head capable of moving up and down and an oil delivery pipe connected with the oil suction head, wherein the oil suction head is used for penetrating through the oil outlet to extract oil stains after layering, and the oil stains are stored in the oil storage tank through the oil delivery pipe.

Optionally, the sewage treatment mechanism includes a lifting mechanism, the lifting mechanism is disposed at the top of the sewage treatment container and located above the oil outlet, and an output end of the lifting mechanism is connected to the oil suction head to drive the oil suction head to move up and down.

Optionally, the lifting mechanism includes a lifting motor and a motion conversion device, the lifting motor is disposed above the oil outlet through a mounting bracket, and the motion conversion device is configured to convert a rotational motion of the lifting motor into a linear motion of the oil suction head.

Optionally, the motion conversion device includes a rotating shaft, a protrusion block fixedly disposed on the rotating shaft, a transmission rod, and a connection block fixedly disposed on the transmission rod, the rotating shaft and the transmission rod both extend in a vertical direction, the rotating shaft is in transmission connection with an output shaft of the lifting motor, a lower end of the transmission rod is fixedly connected with the oil suction head, the connection block is provided with a spiral chute, and the protrusion block is in sliding fit with the spiral chute and can move along the spiral chute.

Optionally, the lifting mechanism includes a box body fixedly disposed on the mounting bracket, the lifting motor is fixedly disposed inside the box body, the rotating shaft is supported in the box body through a supporting plate, and the transmission rod is movably connected to the supporting plate.

Optionally, the sewage treatment mechanism comprises a sealing device mounted to the oil outlet to selectively open the oil outlet.

Optionally, the sealing device includes an elastic member and two oppositely disposed sealing blocks, the sealing blocks are located in the oil outlet and connected to the sewage treatment container through the elastic member, the two sealing blocks can approach each other under the elastic force of the elastic member to close the oil outlet, and can move away from each other against the elastic force of the elastic member under the pressure of the oil suction head to open the oil outlet.

Optionally, the sealing blocks are configured as trapezoidal blocks, each of the trapezoidal blocks has an upper bottom surface, a lower bottom surface and a guiding inclined surface, the upper bottom surfaces of the two sealing blocks are arranged oppositely, the lower bottom surfaces of the two sealing blocks are respectively arranged close to the respective corresponding elastic members, and the guiding inclined surface is used for guiding the oil suction head to enter and exit the oil outlet, wherein a projection of the oil suction head in the height direction is located between the lower bottom surfaces of the two sealing blocks.

Optionally, the sealing device includes a connecting seat and an extension plate, the connecting seat is fixedly disposed in the sewage treatment container and provided with a first opening, the elastic member is disposed inside the connecting seat, and the extension plate is connected between the elastic member and the sealing block and can extend out of or retract into the first opening through the elastic member.

Optionally, be provided with mounting groove, first guide board and connecting rod in the connecting seat, the mounting groove is provided with the second opening, the elastic component sets up in the mounting groove, the one end butt of elastic component in lateral wall, the other end of connecting seat are connected with first guide board, movably the installing of first guide board can be along in the mounting groove the cell wall of mounting groove removes, the connecting rod is connected first guide board with between the extension board, in order to drive the extension board removes.

Optionally, the sealing device comprises a second guide plate movably disposed in the connection seat and movable along a side wall of the connection seat, and for connecting the connection rod and the extension plate.

Optionally, the resilient member is configured as a spring.

Optionally, the bottom of the sewage treatment container is provided with a water outlet for discharging sewage.

Optionally, the oil pumping mechanism comprises an oil pump, and the oil pump is connected with the oil delivery pipe.

Optionally, the stirring mechanism includes a stirring motor and a stirring shaft, the stirring motor is disposed on the top of the sewage treatment container, the stirring shaft is in transmission connection with an output shaft of the stirring motor and is located in the sewage treatment container, and a plurality of stirring blades are fixedly arranged on the stirring shaft.

Through above-mentioned technical scheme, the sewage treatment mechanism for water oil separation that this disclosure provided can carry out the preliminary treatment to oily sewage, stirs the water-oil mixture through rabbling mechanism for the less greasy dirt of density floats on the great sewage of density, and will pass through the greasy dirt after the layering through oil pumping mechanism and store in the oil storage tank via defeated oil pipe, thereby reduces the sewage treatment degree of difficulty and cost, improves sewage treatment effect and efficiency.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic structural diagram of a sewage treatment mechanism for water-oil separation provided by an embodiment of the disclosure;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural diagram of a lifting mechanism in a sewage treatment mechanism for water-oil separation provided by an embodiment of the disclosure;

fig. 4 is a schematic structural diagram of a sealing device in a sewage treatment mechanism for water-oil separation provided by an embodiment of the disclosure.

Description of the reference numerals

1-a sewage treatment vessel; 11-an oil outlet; 12-a water outlet; 2-a stirring mechanism; 21-a stirring motor; 22-a stirring shaft; 23-stirring blade; 3-a lifting mechanism; 30-mounting a bracket; 31-a box body; 311-a support plate; 312-a rotating shaft; 313-a lifting motor; 314-a rotation block; 315-bump block; 316-connecting block; 3161-spiral chute; 317-a transmission rod; 4-an oil pumping mechanism; 41-oil suction head; 42-an oil delivery pipe; 43-oil well pump; 44-an oil outlet pipe; 5-an oil storage tank; 6-sealing device; 61-a connecting seat; 611-mounting grooves; 612-an elastic member; 613-a first guide plate; 614-connecting rod; 615-a second guide plate; 616-an extension plate; 617-sealing block; 6171-upper bottom surface; 6172-lower bottom surface; 6173-guide ramp.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "upper and lower" generally means "upper and lower" opposed to each other in the gravity direction when the respective components are in the use state, unless otherwise specified. Further, "inner and outer" are "inner and outer" with respect to the contour of the corresponding component itself. Furthermore, the terms "first," "second," and the like, as used herein are intended to distinguish one element from another, and not necessarily to distinguish between order and importance. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.

According to an embodiment of the present disclosure, referring to fig. 1 to 4, there is provided a sewage treatment mechanism for water-oil separation, the sewage treatment mechanism including: the sewage treatment container 1 is used for storing a water-oil mixture, and the top of the sewage treatment container is provided with an oil outlet 11; the stirring mechanism 2 is arranged in the sewage treatment container 1 and is used for stirring the water-oil mixture in the sewage treatment container 1 so as to enable the water-oil mixture to be layered; and the oil pumping mechanism 4 is arranged outside the sewage treatment container 1, and comprises an oil suction head 41 capable of moving up and down and an oil delivery pipe 42 connected with the oil suction head 41, wherein the oil suction head 41 is used for penetrating through the oil outlet 11 to extract oil stains after layering, and storing the oil stains in the oil storage tank 5 through the oil delivery pipe 42.

Through above-mentioned technical scheme, the sewage treatment mechanism for water oil separation that this disclosure provided can carry out the preliminary treatment to oily sewage, stirs the water-oil mixture through rabbling mechanism 2 for the less greasy dirt of density floats on the great sewage of density, and will pass through the greasy dirt after the layering through oil pumping mechanism 4 and store in oil storage tank 5 via defeated oil pipe 42, thereby reduces the sewage treatment degree of difficulty and cost, improves sewage treatment effect and efficiency.

In the embodiment provided by the present disclosure, referring to fig. 3, the oil suction head 41 may be opened with a plurality of oil suction ports along the circumferential direction, through which oil passes through the oil delivery pipe 42 and enters the oil storage tank 5.

In the specific embodiment provided by the present disclosure, the sewage treatment mechanism includes a lifting mechanism 3, the lifting mechanism 3 is disposed at the top of the sewage treatment container 1 and located above the oil outlet 11, and an output end of the lifting mechanism 3 is connected to the oil suction head 41 to drive the oil suction head 41 to move up and down, so that when a liquid level in the sewage treatment container 1 changes, a height of the oil suction head 41 in liquid is adjusted to ensure that the oil suction head 41 always remains located in an oil stain layer, and only oil stains are extracted, so as to reliably realize water-oil separation.

In the embodiments provided in the present disclosure, the lifting mechanism 3 may be configured in any suitable manner, such as an electric power cylinder, an air cylinder, a linear module, and the like, to which the present disclosure is not particularly limited. In the present disclosure, referring to fig. 1 and 3 in combination, the lifting mechanism 3 may include a lifting motor 313 and a motion conversion device, the lifting motor 313 is disposed above the oil outlet 11 through a mounting bracket 30, and the motion conversion device is used for converting the rotation motion of the lifting motor 313 into the linear motion of the oil suction head 41.

Wherein the motion converting means may be configured in any suitable manner, such as a rack and pinion mechanism, a slider-crank mechanism, a lead screw-nut mechanism, a linkage mechanism, a cam mechanism, etc., to which the present disclosure is not particularly limited. In the embodiment shown in fig. 3, the motion conversion device may include a rotating shaft 312, a protrusion 315 fixed to the rotating shaft 312, a transmission rod 317, and a connection block 316 fixed to the transmission rod 317, where the rotating shaft 312 and the transmission rod 317 both extend in a vertical direction, the rotating shaft 312 is in transmission connection (e.g., in transmission connection through a coupling) with an output shaft of the lifting motor 313, a lower end of the transmission rod 317 is fixedly connected with the oil suction head 41, the connection block 316 is provided with a spiral sliding groove 3161, and the protrusion 315 is slidably engaged with the spiral sliding groove 3161 and can move along the spiral sliding groove 3161. During operation, the lifting motor 313 drives the rotating shaft 312 to rotate, the rotating shaft 312 drives the protrusion block 315 fixed thereon to rotate together, and the protrusion block 315 moves along the extending direction of the spiral sliding groove 3161, so that the driving rod 317 and the oil suction head 41 fixedly connected to the lower end portion thereof move up and down together, thereby adjusting the height of the oil suction head 41 in the liquid. The protruding block 315 may be directly fixed to the rotating shaft 312, or may be fixed to the rotating shaft 312 through other components, for example, a rotating block 314 shown in fig. 3, the rotating block 314 is fixed to the rotating shaft 312, and the protruding block 315 is fixed to the rotating block 314, so that when the lifting motor 313 drives the rotating shaft 312 to rotate, the rotating block 314 drives the protruding block 315 to rotate together.

In the embodiment provided by the present disclosure, the lifting mechanism 3 includes a box 31 fixedly disposed on the mounting bracket 30, the lifting motor 313 is fixedly disposed inside the box 31, the rotating shaft 312 is supported in the box 31 through a supporting plate 311, and the transmission rod 317 is movably connected to the supporting plate 311, wherein the supporting plate 311 is fixed to the box 31, so that the rotating shaft 312 and the transmission rod 317 are fixed to the box 31 through the supporting plate 311.

In the specific embodiment provided by the present disclosure, the sewage treatment mechanism includes a sealing device 6, and the sealing device 6 is mounted at the oil outlet 11 to selectively open the oil outlet 11, so as to prevent the water-oil mixture from overflowing from the oil outlet 11 due to the stirring of the water-oil mixture by the stirring mechanism 2.

Wherein the sealing device 6 can be configured in any suitable manner, such as an openable sealing door, which is closed to close the oil outlet 11 when the stirring mechanism 2 performs the stirring operation, and is opened when the oily sewage is layered after the stirring operation is completed, and the oil suction head 41 of the oil pumping mechanism 4 is driven by the lifting mechanism 3 to extend downward through the oil outlet 11 into the sewage treatment container 1 to perform the oil pumping operation. Furthermore, the sealing device 6 may be configured in any suitable configuration, as the present disclosure is not limited in this regard.

In the embodiment shown in fig. 4, the sealing device 6 may include an elastic member 612 and two oppositely disposed sealing blocks 617, the sealing blocks 617 are located in the oil outlet 11 and connected to the sewage treatment container 1 through the elastic member 612, the two sealing blocks 617 can approach each other under the elastic force of the elastic member 612, and the two sealing blocks 617 can be kept in contact by the elastic force of the elastic member 612 to close the oil outlet 11 and can be away from each other against the elastic force of the elastic member 612 under the pressing of the oil suction head 41 to open the oil outlet 11.

In the specific embodiment provided by the present disclosure, the sealing blocks 617 are configured as a trapezoidal block, the trapezoidal block has an upper bottom surface 6171, a lower bottom surface 6172 and a guiding inclined surface 6173, the upper bottom surfaces 6171 of the two sealing blocks 617 are disposed opposite to each other, the lower bottom surfaces 6172 of the two sealing blocks 617 are respectively disposed adjacent to the respective corresponding elastic members 612, the guiding inclined surface 6173 is configured to guide the oil suction head 41 to enter and exit the oil outlet 11, wherein a projection of the oil suction head 41 in a height direction is located between the lower bottom surfaces 6172 of the two sealing blocks 617. In the present disclosure, the oil suction head 41 is configured in a cylindrical shape, and the projection of the oil suction head 41 in height is located between the lower bottom surfaces 6172 of the two sealing blocks 617, that is, the distance between the lower bottom surfaces 6172 of the two sealing blocks 617 is greater than the radial dimension of the oil suction head 41, so that the two sealing blocks 617 can be far away from each other against the elastic force of the elastic member 612 by the pressing of the oil suction head 41, thereby opening the oil outlet 11. In other embodiments, the oil suction head 41 may also be configured in a hexagonal prism shape, an octagonal prism shape, or the like, which is not particularly limited by the present disclosure.

It should be explained here that the sealing blocks 617 are configured as a trapezoid block, and the two parallel sides in the trapezoid block are called the bottom side of the trapezoid block, wherein the longer bottom side is the lower bottom, and the shorter bottom side is the upper bottom, where the upper bottom 6171 and the lower bottom 6172 are referred to as the surfaces corresponding to the upper bottom side and the lower bottom side, respectively, in fig. 4, the upper bottom 6171 is the surface where the two sealing blocks 617 are attached to each other, and the lower bottom 6172 is the surface where the two sealing blocks 617 are connected to the extending plate 616.

In the specific embodiment provided by the present disclosure, the sealing device 6 includes a connecting seat 61 and an extending plate 616, the connecting seat 61 is fixedly disposed on the sewage treatment container 1 and is provided with a first opening, the elastic member 612 is disposed inside the connecting seat 61, and the extending plate 616 is connected between the elastic member 612 and the sealing blocks 617 and can extend out of or retract into the first opening through the elastic member 612, so that when the two sealing blocks 617 are attached to each other, the extending plate 616 can better close the oil outlet 11.

In the embodiment provided in the present disclosure, in order to facilitate the arrangement of the elastic member 612, the coupling seat 61 is provided therein with a mounting groove 611, a first guide plate 613 and a coupling rod 614, the mounting groove 611 is provided with a second opening, the elastic member 612 is disposed in the mounting groove 611, one end of the elastic member 612 abuts against the side wall of the connection seat 61, and the other end is connected with a first guide plate 613, the first guide plate 613 is movably installed in the installation groove 611 and can move along the groove wall of the installation groove 611, the connection rod 614 is connected between the first guide plate 613 and the extension plate 616, so as to drive the extension plate 616 to move, guide the movement of the first guide plate 613 through the groove wall of the mounting groove 611, thereby guiding the movement of the connecting rod 614 and the extension plate 616 such that the sealing block 617 moves in a set path to reliably open or close the oil outlet 11.

In the embodiment provided by the present disclosure, each sealing block 617 is connected to the sewage treatment tank 1 by three elastic members 612, and accordingly, the number of the mounting groove 611, the first guide plate 613 and the connecting rod 614 corresponding to each sealing block 617 is three, and in order to facilitate the connection of the connecting rod 614 with the extension plate 616, the sealing device 6 may include a second guide plate 615, the second guide plate 615 being movably disposed in the connecting seat 61 and being movable along the sidewall of the connecting seat 61, and being used to connect the connecting rod 614 with the extension plate 616, such that the movement of the second guide plate 615 is guided by the sidewall of the connecting seat 61 to move the sealing block 617 in a set path, thereby reliably opening or closing the oil outlet 11.

In the specific embodiments provided by the present disclosure, the elastic member 612 may be configured as a spring.

In the specific embodiment provided by the present disclosure, the bottom of the sewage treatment container 1 is provided with a water outlet 12 for discharging sewage.

In the embodiment provided by the present disclosure, the oil pumping mechanism 4 includes an oil pump 43, and the oil pump 43 is connected to the oil delivery pipe 42 to provide power for extracting oil contamination through the oil pump 43.

In the specific embodiment provided by the present disclosure, the stirring mechanism 2 may include a stirring motor 21 and a stirring shaft 22, the stirring motor 21 is disposed on the top of the sewage treatment container 1, the stirring shaft 22 is in transmission connection with an output shaft of the stirring motor 21 and is located in the sewage treatment container 1, and a plurality of stirring blades 23 are fixedly disposed on the stirring shaft 22. When the device works, the stirring shaft 22 is driven by the stirring motor 21 to rotate, and the stirring blades 23 are driven to rotate through the stirring shaft 22, so that the water-oil mixture is stirred, and oil stains and sewage are layered.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (15)

1. A sewage treatment mechanism for water-oil separation, characterized in that, sewage treatment mechanism includes:

the sewage treatment container (1) is used for storing a water-oil mixture, and the top of the sewage treatment container is provided with an oil outlet (11);

the stirring mechanism (2) is arranged in the sewage treatment container (1) and is used for stirring the water-oil mixture in the sewage treatment container (1) so as to enable the water-oil mixture to be layered; and the number of the first and second groups,

the oil pumping mechanism (4) is arranged outside the sewage treatment container (1) and comprises an oil suction head (41) capable of moving up and down and an oil delivery pipe (42) connected with the oil suction head (41), wherein the oil suction head (41) is used for penetrating through the oil outlet (11) to extract oil stains after layering, and the oil stains are stored in the oil storage tank (5) through the oil delivery pipe (42).

2. The sewage treatment mechanism for water-oil separation according to claim 1, wherein the sewage treatment mechanism comprises a lifting mechanism (3), the lifting mechanism (3) is arranged at the top of the sewage treatment container (1) and above the oil outlet (11), and the output end of the lifting mechanism (3) is connected to the oil suction head (41) to drive the oil suction head (41) to move up and down.

3. The sewage treatment mechanism for water-oil separation according to claim 2, wherein said lifting mechanism (3) comprises a lifting motor (313) and a motion conversion device, said lifting motor (313) is arranged above said oil outlet (11) through a mounting bracket (30), said motion conversion device is used for converting the rotary motion of said lifting motor (313) into the linear motion of an oil suction head (41).

4. The sewage treatment mechanism for water-oil separation according to claim 3, wherein the motion conversion device comprises a rotating shaft (312), a protrusion block (315) fixedly arranged on the rotating shaft (312), a transmission rod (317) and a connection block (316) fixedly arranged on the transmission rod (317), the rotating shaft (312) and the transmission rod (317) both extend along a vertical direction, the rotating shaft (312) is in transmission connection with an output shaft of the lifting motor (313), the lower end of the transmission rod (317) is fixedly connected with the oil suction head (41), a spiral sliding groove (3161) is arranged on the connection block (316), and the protrusion block (315) is in sliding fit with the spiral sliding groove (3161) and can move along the spiral sliding groove (3161).

5. The sewage treatment mechanism for water-oil separation according to claim 4, wherein said lifting mechanism (3) comprises a box body (31) fixedly arranged on said mounting bracket (30), said lifting motor (313) is fixedly arranged inside said box body (31), said rotating shaft (312) is supported in said box body (31) through a supporting plate (311), and said driving rod (317) is movably connected to said supporting plate (311).

6. Sewage treatment mechanism for water-oil separation according to claim 1, characterised in that it comprises sealing means (6), said sealing means (6) being mounted to said oil outlet (11) to selectively open said oil outlet (11).

7. The sewage treatment mechanism for water-oil separation according to claim 6, wherein said sealing device (6) comprises an elastic member (612) and two oppositely disposed sealing blocks (617), said sealing blocks (617) are located in said oil outlet (11) and connected to said sewage treatment container (1) through said elastic member (612), said two sealing blocks (617) can be close to each other under the elastic force of said elastic member (612) to close said oil outlet (11) and can be away from each other against the elastic force of said elastic member (612) under the pressing of said oil suction head (41) to open said oil outlet (11).

8. The sewage treatment mechanism for water-oil separation according to claim 7, wherein said sealing blocks (617) are configured as trapezoidal blocks having upper bottom surfaces (6171), lower bottom surfaces (6172) and guiding inclined surfaces (6173), the upper bottom surfaces (6171) of the two sealing blocks (617) are arranged oppositely, the lower bottom surfaces (6172) of the two sealing blocks (617) are respectively arranged near the respective corresponding elastic members (612), and the guiding inclined surfaces (6173) are used for guiding the oil suction head (41) to enter and exit from the oil outlet (11), wherein the projection of the oil suction head (41) in the height direction is located between the lower bottom surfaces (6172) of the two sealing blocks (617).

9. The sewage treatment mechanism for water-oil separation according to claim 7, wherein said sealing device (6) comprises a connecting base (61) and an extension plate (616), said connecting base (61) is fixedly arranged on said sewage treatment container (1) and provided with a first opening, said elastic member (612) is arranged inside said connecting base (61), and said extension plate (616) is connected between said elastic member (612) and said sealing block (617) and can be extended or retracted from said first opening through said elastic member (612).

10. The sewage treatment mechanism for water-oil separation according to claim 9, wherein a mounting groove (611), a first guide plate (613) and a connecting rod (614) are disposed in the connecting seat (61), the mounting groove (611) is provided with a second opening, the elastic member (612) is disposed in the mounting groove (611), one end of the elastic member (612) abuts against the side wall of the connecting seat (61), the other end of the elastic member is connected with a first guide plate (613), the first guide plate is movably mounted in the mounting groove (611) and can move along the groove wall of the mounting groove (611), and the connecting rod (614) is connected between the first guide plate (613) and the extending plate (616) to move the extending plate (616).

11. The sewage treatment mechanism for water-oil separation according to claim 10, wherein said sealing means (6) comprises a second guide plate (615), said second guide plate (615) being movably disposed in said connection seat (61) and being movable along a side wall of said connection seat (61) and being for connecting said connection rod (614) and said extension plate (616).

12. The wastewater treatment unit for water-oil separation according to any of claims 6-11, wherein the elastic member (612) is configured as a spring.

13. The wastewater treatment unit for water-oil separation according to claim 1, characterized in that the bottom of the wastewater treatment container (1) is provided with a water outlet (12) for discharging wastewater.

14. Sewage treatment mechanism for water-oil separation according to claim 1, characterised in that said pumping mechanism (4) comprises an oil pump (43), said oil pump (43) being connected to said oil delivery pipe (42).

15. The sewage treatment mechanism for water-oil separation according to claim 1, wherein the stirring mechanism (2) comprises a stirring motor (21) and a stirring shaft (22), the stirring motor (21) is arranged at the top of the sewage treatment container (1), the stirring shaft (22) is in transmission connection with an output shaft of the stirring motor (21) and is positioned in the sewage treatment container (1), and a plurality of stirring blades (23) are fixedly arranged on the stirring shaft (22).

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