Ultrasonic enhanced treatment system for oil-containing sludge

Abstract

The application discloses an oil-containing sludge ultrasonic reinforced treatment system, which comprises a machine body, an ultrasonic device, a pushing device, a solid-liquid separation device and a stirring device. The machine body is provided with a first chamber and a second chamber which are connected with each other, and the first chamber is located above the second chamber. The ultrasonic device is arranged in the first chamber, so that the sludge in the first chamber is vibrated and layered. The pushing device is arranged in the second chamber, one side of the second chamber is provided with a pumping port, and the pushing device is used for scraping and sending the sludge in the second chamber to the pumping port. The solid-liquid separation device is connected with the pumping port, the sludge in the solid-liquid separation device is separated by the solid-liquid separation to form a filter cake and a filtrate. The stirring device is connected with the solid-liquid separation device, so as to convey the filtrate in the solid-liquid separation device into the stirring device. The stirring device is used for stirring and mixing the medicament and the filtrate. The application reinforces the treatment process of the oil-containing sludge by the ultrasonic technology, and improves the oil separation efficiency and the resource recovery rate.

Description

Technical Field

[0001] This invention belongs to the field of sludge treatment technology, and specifically relates to an ultrasonic enhancement treatment system for oily sludge. Background Technology

[0002] Oily sludge is a common type of domestic or industrial waste, which is difficult and costly to treat, and poses a risk of environmental pollution. Current technologies often fail to separate the oil components from the sludge during treatment, resulting in the oil entering subsequent processing stages along with the filtrate. This oil easily adheres to equipment surfaces, causing corrosion and scaling, making cleaning difficult and increasing the complexity of subsequent treatments. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose an ultrasonic enhanced treatment system for oily sludge with high processing efficiency.

[0005] The ultrasonic enhanced treatment system for oily sludge according to an embodiment of the present invention includes: The body has a first chamber and a second chamber that are connected to each other, with the first chamber located above the second chamber; An ultrasonic device is disposed in the first chamber to cause the sludge in the first chamber to vibrate and stratify. A pushing device is disposed in the second chamber, and at least one side of the second chamber is provided with a discharge port. The pushing device is used to scrape and deliver the sludge in the second chamber to the discharge port. A solid-liquid separation device is connected to the discharge port. Sludge entering the solid-liquid separation device through the discharge port undergoes solid-liquid separation to form sludge cake and filtrate. A stirring device is provided, which is connected to the solid-liquid separation device to convey the filtrate from the solid-liquid separation device into the stirring device. The stirring device is used to stir and mix the medicine and the filtrate.

[0006] The ultrasonic enhanced treatment system for oily sludge in this invention enhances the treatment process of oily sludge through ultrasonic technology, improves oil separation efficiency and resource recovery rate, reduces energy consumption, and optimizes equipment structure, thereby better meeting the needs of modern industry for efficient, economical, and environmentally friendly oily sludge treatment technology.

[0007] In some embodiments, the ultrasonic device includes a sliding frame, a first driving component, and an ultrasonic generator. The sliding frame is disposed in the first cavity and is movable within the first cavity along a first direction. The first driving component is connected to the sliding frame to drive the sliding frame to move. The ultrasonic generator is disposed on the sliding frame.

[0008] In some embodiments, the sliding frame is in contact with the bottom surface of the first chamber, and the two ends of the sliding frame in the second direction are in contact with the side wall of the first chamber, wherein the first direction, the second direction and the vertical direction are orthogonal to each other.

[0009] In some embodiments, the sliding frame is provided with an oscillating plate, which moves with the sliding frame.

[0010] In some embodiments, the upper part of the first chamber has an overflow groove or an oil drain port; And / or, a partition is provided between the first chamber and the second chamber, and the partition is provided with a through hole or through groove, through which the first chamber and the second chamber are connected.

[0011] In some embodiments, the pushing device includes an upper scraper, a lower scraper, a connecting plate, and a second driving component. The upper scraper is in contact with the top surface of the second chamber, the lower scraper is in contact with the bottom surface of the second chamber, the connecting plate is connected between the upper scraper and the lower scraper, and the second driving component is connected to one of the upper scraper, the lower scraper, and the connecting plate to drive the upper scraper, the lower scraper, and the connecting plate to move.

[0012] In some embodiments, the solid-liquid separation device includes a housing, a variable-pitch screw, and a third driving component. The variable-pitch screw is disposed inside the housing, and a first conveying pump is provided between the housing and the discharge port. The first conveying pump is used to convey sludge from the second chamber into the housing, and the third driving component is used to drive the variable-pitch screw to rotate, so as to squeeze the sludge and form a sludge cake.

[0013] In some embodiments, the housing is connected to a second delivery pump, and the second delivery pump is provided with delivery pipes between the stirring device and the first chamber. Part of the filtrate in the housing can be delivered to the first chamber, and another part of the filtrate in the housing can be delivered to the stirring device.

[0014] In some embodiments, the stirring device includes a stirring drum, a stirring component, and a fourth driving component. The stirring component is disposed inside the stirring drum, and the fourth driving component is connected to the stirring component to drive the stirring component to rotate. The stirring component includes a first shaft and a second shaft that are coaxial and rotatably connected. Both the first shaft and the second shaft are provided with stirring blades. The fourth driving component drives the first shaft and the second shaft to rotate. In some embodiments, the fourth driving component includes a driver, a first drive shaft, a second drive shaft, and a bevel gear set. The first drive shaft and the second drive shaft are supported on a stirring tank or a support frame for fixing the driver by bearing seats. The output end of the driver is connected to the first drive shaft and the second drive shaft. The bevel gear set is provided between the first drive shaft and the first shaft, and between the second drive shaft and the second shaft. Alternatively, the first shaft and the second shaft rotate in the same direction, and the rotational speed of one of the first shaft and the second shaft is greater than the rotational speed of the other; Alternatively, the first axis and the second axis may rotate in opposite directions. Alternatively, the stirring blade may be oscillating relative to the first shaft or the second shaft and have a first state and a second state. When the first shaft and the second shaft rotate clockwise about the axis of the first shaft, the stirring blade is in the first state, and when the first shaft and the second shaft rotate counterclockwise about the axis of the first shaft, the stirring blade is in the second state. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an ultrasonic enhancement treatment system for oily sludge according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the first chamber and the ultrasonic device according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram from another perspective of the ultrasonic enhanced treatment system for oily sludge according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the stirring device according to an embodiment of the present invention.

[0019] Figure label: 1. Body; 11. First chamber; 12. Second chamber; 13. Central partition; 14. Slide rail; 2. Ultrasonic device; 21. Ultrasonic generator; 22. Sliding frame; 23. Vibrating plate; 24. Oil drain port; 3. Pushing device; 31. Upper scraper; 32. Lower scraper; 33. Connecting plate; 34. Second drive component; 341. Lead screw; 4. Solid-liquid separation device; 41. Third drive component; 5. Stirring device; 51. Stirring drum; 52. First shaft; 53. Second shaft; 54. Stirring blades; 55. Fourth driving component; 551. Driver; 552. First transmission shaft; 553. Second transmission shaft; 554. Bevel gear set; 555. Chain; 556. Sprocket. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] See Figures 1 to 4 The ultrasonic enhanced treatment system for oily sludge according to an embodiment of the present invention includes a body 1, an ultrasonic device 2, a pushing device 3, a solid-liquid separation device 4, and a stirring device 5. The body 1 has a first chamber 11 and a second chamber 12 that are connected to each other, with the first chamber 11 located above the second chamber 12. The first chamber 11 can be an open chamber at the top to facilitate the feeding of oily sludge into the first chamber 11, and the second chamber 12 is located below the first chamber 11, so that the heavier part of the sludge can enter the second chamber 12 during the settling process.

[0022] The ultrasonic device 2 is installed inside the first chamber 11 to vibrate and stratify the sludge within the first chamber 11. In this embodiment, the ultrasonic device 2 can use ultrasonic vibration to clean the oil stains adhering to the side wall of the first chamber 11, and through the cavitation effect of the ultrasonic waves, the oil is better separated from the sludge and concentrated in the upper part of the first chamber 11, facilitating the centralized collection and treatment of liquids with high oil content.

[0023] A pushing device 3 is disposed within the second chamber 12. At least one side of the second chamber 12 has a discharge port. The pushing device 3 is used to scrape and convey the sludge within the second chamber 12 to the discharge port. The pushing device 3 also pushes the sludge settled at the bottom of the second chamber 12 towards the discharge port, thereby facilitating sludge discharge and preventing sludge from accumulating in the second chamber 12 and being unable to be discharged. This embodiment not only ensures the separation of oil from the sludge but also maintains the cleanliness of the first chamber 11 and the second chamber 12, improving the treatment effect during long-term operation.

[0024] The solid-liquid separation device 4 is connected to the discharge port. The sludge entering the solid-liquid separation device 4 through the discharge port undergoes solid-liquid separation to form a sludge cake and filtrate. The solid-liquid separation device 4 can be a filter press or a screw press, etc. By squeezing the sludge, the water and solids in the sludge are separated. The solids form a sludge cake, and the filtrate can be reused to ensure sufficient water level in the first chamber 11 and the second chamber 12. Alternatively, the filtrate can be further treated and discharged.

[0025] The stirring device 5 is connected to the solid-liquid separation device 4 to transport the filtrate from the solid-liquid separation device 4 into the stirring device 5. The stirring device 5 is used to stir and mix the reagent and the filtrate. When treating the filtrate, flocculants or other chemical agents can be added to the stirring device 5. The stirring of the stirring device 5 can improve the mixing efficiency and the treatment effect of the filtrate.

[0026] The ultrasonic enhanced treatment system for oily sludge in this invention enhances the treatment process of oily sludge through ultrasonic technology, improves oil separation efficiency and resource recovery rate, reduces energy consumption, and optimizes equipment structure, thereby better meeting the needs of modern industry for efficient, economical, and environmentally friendly oily sludge treatment technology.

[0027] In some embodiments, the ultrasonic device 2 includes a sliding frame 22, a first driving component, and an ultrasonic generator 21. The sliding frame 22 is disposed in a first chamber 11 and is movable in the first chamber 11 along a first direction. The first driving component is connected to the sliding frame 22 to drive the sliding frame 22 to move. The ultrasonic generator 21 is disposed on the sliding frame 22.

[0028] A slide rail 14 can be installed on the side wall of the first chamber 11, and a sliding frame 22 can be slidably mounted on the slide rail 14. The ultrasonic generator 21 can be fixed on the sliding frame 22 or fixed on the side wall of the first chamber 11. When the ultrasonic generator 21 is activated, the sludge in the first chamber 11 will vibrate at a high frequency, thereby better separating the oil from the sludge.

[0029] The first driving component can be a cylinder, a hydraulic cylinder, or an electric push rod. Alternatively, the first driver 551 includes a motor, a lead screw, and a lead screw nut. The lead screw nut is connected to the sliding frame 22. When the motor drives the lead screw to rotate, it can drive the lead screw nut and the sliding frame 22 to move synchronously.

[0030] In this embodiment, the sliding frame 22 can agitate the sludge in the first chamber 11, thereby improving the oil separation efficiency.

[0031] Furthermore, the sliding frame 22 is in contact with the bottom surface of the first chamber 11, and both ends of the sliding frame 22 in the second direction are in contact with the side wall of the first chamber 11. The first direction, the second direction, and the vertical direction are orthogonal to each other. The first direction and the second direction are shown in the figure.

[0032] During the movement of the sliding frame 22, the bottom and side walls of the first chamber 11 can be cleaned to prevent scale buildup on the bottom or side walls and ensure that the system can operate stably for a long time.

[0033] Optionally, the sliding frame 22 is equipped with an oscillating plate 23, which moves with the sliding frame 22. The oscillating plate 23 can generate high-frequency vibration under the action of the ultrasonic generator 21. As the oscillating plate 23 moves with the sliding frame 22, the sludge can come into contact with the oscillating plate 23, improving the oil-sludge separation effect in different areas, resulting in good overall working performance and high oil separation efficiency from the sludge.

[0034] In some embodiments, the upper part of the first chamber 11 has an overflow trough or an oil drain 24. The separated oily substances can be continuously collected through the overflow trough or discharged through the oil drain 24, and then the separated oily substances can be centrally processed. The sludge remaining in the first chamber 11 has a low oil content, has little impact on subsequent equipment, and is more convenient to process.

[0035] In some embodiments, a partition 13 is provided between the first chamber 11 and the second chamber 12. The first chamber 11 is located above the partition 13, and the second chamber 12 is located below the partition 13. The partition 13 is provided with through holes or through slots, and the first chamber 11 and the second chamber 12 are connected through the through holes or through slots. In this embodiment, sludge in the first chamber 11 can flow into the second chamber 12 through the through holes or through slots.

[0036] The partition 13 divides a large chamber in the body 1 into two parts, namely the first chamber 11 and the second chamber 12. By separating the spaces of the first chamber 11 and the second chamber 12, sludge in the first chamber 11 can be prevented from directly entering the second chamber 12. When the sludge in the first chamber 11 is separated by ultrasonic vibration under the movement of the sliding frame 22, it enters the second chamber 12. Thus, the differential acoustic wave device in the first chamber 11 and the pushing device 3 in the second chamber 12 can work relatively independently, with minimal interference between them, resulting in good practicality.

[0037] Of course, the first chamber 11 and the second chamber 12 can be separated by a partition 13 without through holes or through slots, or the through holes or through slots on the partition 13 can have a small flow area to ensure water flow. A transfer pump is installed between the first chamber 11 and the second chamber 12 to pump the sludge in the first chamber 11 into the second chamber 12, where it can undergo preliminary sedimentation and stratification, facilitating centralized treatment of the sludge.

[0038] In some embodiments, the pushing device 3 includes an upper scraper 31, a lower scraper 32, a connecting plate 33, and a second driving component 34. The upper scraper 31 is attached to the top surface of the second chamber 12, the lower scraper 32 is attached to the bottom surface of the second chamber 12, the connecting plate 33 is connected between the upper scraper 31 and the lower scraper 32, and the second driving component 34 is connected to one of the upper scraper 31, the lower scraper 32, and the connecting plate 33 to drive the upper scraper 31, the lower scraper 32, and the connecting plate 33 to move.

[0039] For example, the second drive component 34 includes a motor and a lead screw 341. The upper scraper 31 is provided with a screw hole connected to the lead screw. When the motor drives the lead screw to rotate, it drives the upper scraper 31, the lower scraper 32 and the connecting plate 33 to move.

[0040] The upper scraper 31 can clean the lower surface of the partition 13, and the lower scraper 32 can clean the bottom surface of the second chamber 12. The sliding frame 22 in the ultrasonic device 2 can clean the upper surface of the partition 13, thereby ensuring the cleanliness of the system. At the same time, the upper scraper 31 and the lower scraper 32 can push the sludge in the second chamber 12 toward the discharge port. In this embodiment, the second chamber 12 can be provided with discharge ports on both sides in the first direction. When the upper scraper 31 and the lower scraper 32 move in the first direction, the sludge can be pushed to the two discharge ports, improving the sludge discharge efficiency, increasing the discharge of solid materials, and making it easier to maintain the water level in the first chamber 11 and the second chamber 12.

[0041] In some embodiments, the solid-liquid separation device 4 of this embodiment can be a screw extruder. The solid-liquid separation device 4 includes a housing, a variable pitch screw and a third drive component 41. The variable pitch screw is disposed inside the housing. A first conveying pump is provided between the housing and the discharge port. The first conveying pump is used to convey the sludge in the second chamber 12 into the housing. The third drive component 41 is used to drive the variable pitch screw to rotate, so as to squeeze the sludge and form a sludge cake.

[0042] The inner cavity of the shell has a generally cylindrical extrusion chamber, which is matched with a variable pitch screw. The variable pitch screw is located in the extrusion chamber. The third drive component 41 can be a motor. When the motor drives the variable pitch screw to rotate, it can extrude sludge. As the pitch of the variable pitch screw gradually decreases, it can extrude water from the sludge, so that a drier sludge cake with less water content is formed at the outlet of the extrusion chamber. The filtrate during the extrusion process can be collected through a collection tank.

[0043] Furthermore, the housing is connected to a second delivery pump. Specifically, the second delivery pump can be connected to a collection tank. Delivery pipes are provided between the second delivery pump, the stirring device 5, and the first chamber 11. Part of the filtrate inside the housing can be delivered to the first chamber 11, thereby replenishing the water level in the first chamber 11 and ensuring the normal and stable operation of ultrasonic separation. The remaining filtrate inside the housing can be delivered to the stirring device 5. When the water level in the first chamber 11 is stable, the remaining filtrate can be delivered to the stirring device 5 for further processing.

[0044] In some embodiments, the stirring device 5 includes a stirring drum 51, a stirring component, and a fourth driving component 55. The stirring component is disposed inside the stirring drum 51, and the fourth driving component 55 is connected to the stirring component to drive the stirring component to rotate.

[0045] The stirring component includes a first shaft 52 and a second shaft 53 that are coaxial and rotatably connected. Both the first shaft 52 and the second shaft 53 are equipped with stirring blades 54. A fourth driving component 55 drives the first shaft 52 and the second shaft 53 to rotate. In this embodiment, the first shaft 52 and the second shaft 53 rotate in the same direction, with one shaft rotating at a higher speed than the other. This improves the mixing effect of the solution in the stirring drum 51, enhances the flocculation effect, and improves the treatment effect of harmful components in the filtrate.

[0046] Alternatively, the first shaft 52 and the second shaft 53 may rotate in opposite directions. That is, the fourth drive component 55 may drive the first shaft 52 to rotate clockwise around its axis and drive the second shaft 53 to rotate counterclockwise around its axis. Or, the fourth drive component 55 may drive the first shaft 52 to rotate counterclockwise around its axis and drive the second shaft 53 to rotate clockwise around its axis.

[0047] Optionally, the fourth drive component 55 includes a driver 551, a first drive shaft 552, a second drive shaft 553, and a bevel gear set 554. The driver 551 can be a motor. The first drive shaft 552 and the second drive shaft 553 are supported on the stirring drum 51 by bearing seats, or supported on a support frame for fixing the driver 551 by bearing seats. The output end of the driver 551 is connected to the first drive shaft 552 and the second drive shaft 553. For example, sprockets 556 are provided on the output end of the driver 551, the first drive shaft 552, and the second drive shaft 553. The output end of the driver 551 is connected to the first drive shaft 552 and the second drive shaft 553 by a chain 555. A bevel gear set 554 is provided between the first drive shaft 552 and the first shaft 52, and a bevel gear set 554 is provided between the second drive shaft 553 and the second shaft 53, thereby realizing the reversal of power transmission. This ensures that both the first shaft 52 and the second shaft 53 can rotate around the axis of the first shaft 52 (that is, the axis of the second shaft 53).

[0048] Furthermore, the stirring blade 54 can swing relative to the first shaft 52 or the second shaft 53 and has a first state and a second state. When the first shaft 52 and the second shaft 53 rotate clockwise around the axis of the first shaft 52, the stirring blade 54 is in the first state. When the first shaft 52 and the second shaft 53 rotate counterclockwise around the axis of the first shaft 52, the stirring blade 54 is in the second state.

[0049] When the first shaft 52 rotates clockwise, the stirring blade 54 rotates to the first state under the push of the filtrate, and then stirs the filtrate in the corresponding area. When the first shaft 52 rotates counterclockwise, the stirring blade 54 rotates to the second state under the push of the filtrate, and then stirs the filtrate in the corresponding area.

[0050] Similarly, when the second shaft 53 rotates clockwise, the stirring blade 54 rotates to the first state under the push of the filtrate, and then stirs the filtrate in the corresponding area. When the second shaft 53 rotates counterclockwise, the stirring blade 54 rotates to the second state under the push of the filtrate, and then stirs the filtrate in the corresponding area.

[0051] The stirring component in this embodiment is highly flexible, not only can it freely rotate in both directions, but the stirring blades 54 can also be adaptively adjusted in posture. At the same time, the first shaft 52 and the second shaft 53 can drive their respective stirring blades 54 to rotate, thereby achieving efficient mixing of the filtrate in the stirring drum 51 and improving the processing efficiency.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An ultrasonic enhancement treatment system for oily sludge, characterized in that, include: The body has a first chamber and a second chamber that are connected to each other, with the first chamber located above the second chamber; An ultrasonic device is disposed in the first chamber to cause the sludge in the first chamber to vibrate and stratify. A pushing device is disposed in the second chamber, and at least one side of the second chamber is provided with a discharge port. The pushing device is used to scrape and deliver the sludge in the second chamber to the discharge port. A solid-liquid separation device is connected to the discharge port. Sludge entering the solid-liquid separation device through the discharge port undergoes solid-liquid separation to form sludge cake and filtrate. A stirring device is provided, which is connected to the solid-liquid separation device to convey the filtrate from the solid-liquid separation device into the stirring device. The stirring device is used to stir and mix the medicine and the filtrate.

2. The ultrasonic enhanced treatment system for oily sludge according to claim 1, characterized in that, The ultrasonic device includes a sliding frame, a first driving component, and an ultrasonic generator. The sliding frame is disposed in the first chamber and is movable in the first chamber along a first direction. The first driving component is connected to the sliding frame to drive the sliding frame to move. The ultrasonic generator is disposed on the sliding frame.

3. The ultrasonic enhanced treatment system for oily sludge according to claim 2, characterized in that, The sliding frame is in contact with the bottom surface of the first chamber, and the two ends of the sliding frame in the second direction are in contact with the side wall of the first chamber. The first direction, the second direction and the vertical direction are orthogonal to each other.

4. The ultrasonic enhanced treatment system for oily sludge according to claim 2, characterized in that, The sliding frame is equipped with an oscillating plate, which moves with the sliding frame.

5. The ultrasonic enhanced treatment system for oily sludge according to any one of claims 1 to 4, characterized in that, The upper part of the first chamber has an overflow groove or an oil drain port; And / or, a partition is provided between the first chamber and the second chamber, and the partition is provided with a through hole or through groove, through which the first chamber and the second chamber are connected.

6. The ultrasonic enhanced treatment system for oily sludge according to claim 1, characterized in that, The pushing device includes an upper scraper, a lower scraper, a connecting plate, and a second driving component. The upper scraper is in contact with the top surface of the second chamber, the lower scraper is in contact with the bottom surface of the second chamber, the connecting plate is connected between the upper scraper and the lower scraper, and the second driving component is connected to one of the upper scraper, the lower scraper, and the connecting plate to drive the upper scraper, the lower scraper, and the connecting plate to move.

7. The ultrasonic enhanced treatment system for oily sludge according to claim 1, characterized in that, The solid-liquid separation device includes a shell, a variable pitch screw, and a third driving component. The variable pitch screw is disposed inside the shell. A first conveying pump is provided between the shell and the discharge port. The first conveying pump is used to convey sludge from the second chamber into the shell. The third driving component is used to drive the variable pitch screw to rotate, so as to squeeze the sludge and form a sludge cake.

8. The ultrasonic enhanced treatment system for oily sludge according to claim 7, characterized in that, The housing is connected to a second delivery pump. The second delivery pump is connected to both the stirring device and the first chamber via delivery pipes. Part of the filtrate in the housing can be delivered to the first chamber, and another part of the filtrate in the housing can be delivered to the stirring device.

9. The ultrasonic enhanced treatment system for oily sludge according to claim 1, characterized in that, The stirring device includes a stirring drum, a stirring component, and a fourth driving component. The stirring component is disposed inside the stirring drum, and the fourth driving component is connected to the stirring component to drive the stirring component to rotate. The stirring component includes a first shaft and a second shaft that are coaxial and rotatably connected. Both the first shaft and the second shaft are provided with stirring blades. The fourth driving component drives the first shaft and the second shaft to rotate.

10. The ultrasonic enhanced treatment system for oily sludge according to claim 9, characterized in that, The fourth driving component includes a driver, a first drive shaft, a second drive shaft, and a bevel gear set. The first drive shaft and the second drive shaft are supported on a stirring tank or a support frame for fixing the driver by bearing seats. The output end of the driver is connected to the first drive shaft and the second drive shaft. The bevel gear set is provided between the first drive shaft and the first shaft, and between the second drive shaft and the second shaft. Alternatively, the first shaft and the second shaft rotate in the same direction, and the rotational speed of one of the first shaft and the second shaft is greater than the rotational speed of the other; Alternatively, the first axis and the second axis may rotate in opposite directions. Alternatively, the stirring blade may be oscillating relative to the first shaft or the second shaft and have a first state and a second state. When the first shaft and the second shaft rotate clockwise about the axis of the first shaft, the stirring blade is in the first state, and when the first shaft and the second shaft rotate counterclockwise about the axis of the first shaft, the stirring blade is in the second state.

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