Oil stain mixed sewage treatment structure and pipe fitting oil stain cleaning machine

Abstract

The invention discloses an oil stain mixed sewage treatment structure and a pipe fitting oil stain cleaning machine in the field of wastewater treatment, the oil stain mixed sewage treatment structure comprises a cleaning box, and a negative pressure oil suction mechanism is arranged in the cleaning box; the negative-pressure oil suction mechanism comprises a negative-pressure oil suction pipe, an oil suction port and an oil outlet are formed in the negative-pressure oil suction pipe, a first rotating shaft is vertically and rotationally installed in the middle of the negative-pressure oil suction pipe, a negative-pressure fan is fixedly installed on the first rotating shaft, and the first rotating shaft is externally connected with a driving source. According to the cleaning device, oil stains floating on the upper layer of the cleaning box can be sucked while the cleaning box cleans the pipe fittings, and then the sucked high-concentration oil-containing wastewater is centralized for unified treatment, so that on one hand, the situation that the oil stains float on the cleaning liquid surface and are attached to the pipe fittings again after the pipe fittings are cleaned and fished is avoided; on the other hand, compared with treatment of the wastewater in the whole cleaning box, the whole wastewater treatment capacity is reduced, and the wastewater treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to an oily mixed sewage treatment structure and an oily pipe cleaning machine. Background Art

[0002] Oily mixed wastewater treatment refers to the technology of treating wastewater containing oil pollutants to meet the discharge standards or reuse requirements. At present, in the cleaning method of oily pipes, considering the cleaning efficiency and cleaning without dead angles, the pipes are often placed in a cleaning box for ultrasonic vibration or cleaned with water flow containing emulsifiers, but this method still has defects.

[0003] For example, during cleaning, oil will float on the water surface. When the pipes are salvaged after cleaning, the floating oil may adhere to the salvaged pipes, resulting in inadequate cleaning of the pipes. In addition, as the number of cleanings increases, the water in the cleaning tank will become turbid, affecting the cleaning effect. Therefore, it is necessary to treat the sewage in the cleaning tank in a timely manner. At this time, if the entire water in the cleaning tank is replaced, it will not only be time-consuming and labor-intensive, but will also cause a waste of water resources. In addition, this method will result in a large amount of sewage that needs to be treated, which is not conducive to sewage treatment, affects the efficiency of wastewater treatment, and will cause Therefore, an oily mixed sewage treatment structure and a pipe oil cleaning machine are needed to solve the above problems. Summary of the invention

[0004] The technical problem of the present invention is to provide an oily mixed sewage treatment structure and a pipe oily sewage cleaning machine. The oily mixed sewage treatment structure of the present invention can absorb the oily sewage floating on the upper layer of the cleaning box while cleaning the pipes in the cleaning box, and then collect the absorbed high-concentration oily wastewater for unified treatment. In this way, on the one hand, it is avoided that the pipes are attached to the pipes again due to the oily sewage floating on the cleaning liquid surface after the pipes are cleaned and salvaged. On the other hand, compared with the treatment of the wastewater in the entire cleaning box, the method of the present invention reduces the entire wastewater treatment volume and improves the wastewater treatment efficiency. In addition, the pipe oily sewage cleaning machine of the present invention places the pipes vertically in the cleaning box for centrifugal cleaning. On the one hand, the vertical placement can make the oily sewage rise to the liquid surface in time to avoid attachment to the inner wall of the pipes. On the other hand, the centrifugal cleaning quickly separates the oily mixed sewage from oil and water. The lighter oil phase will be centrifugally gathered in the center and sucked by the negative pressure oil suction pipe, which is convenient for subsequent wastewater treatment. The water phase will continue to stay in the cleaning box to clean the pipes, which greatly reduces the wastewater treatment volume while saving water resources and improves the wastewater treatment efficiency.

[0005] The present invention provides the following technical solution: an oily mixed sewage treatment structure, comprising a cleaning box, wherein a negative pressure oil suction mechanism is arranged in the cleaning box; The negative pressure oil suction mechanism includes a negative pressure oil suction pipe fixedly installed in the middle of the cleaning box, an oil suction port is opened at the upper end of the negative pressure oil suction pipe, an oil outlet is arranged at the lower end of the negative pressure oil suction pipe, a first rotating shaft is vertically installed in the middle of the negative pressure oil suction pipe, a negative pressure fan is fixedly installed on the first rotating shaft, and the first rotating shaft is externally connected to a driving source.

[0006] As a further solution of the present invention, a vertical slide groove is opened at the upper end of the negative pressure oil suction pipe, a sliding plate is vertically slidably installed in the slide groove, the oil suction port is arranged on the sliding plate, and a floating block is also fixedly installed on the sliding plate.

[0007] As a further solution of the present invention, the floating block is made of rubber.

[0008] As a further solution of the present invention, a one-way valve is provided at the oil outlet.

[0009] The present invention also provides a pipe oil cleaning machine, which is suitable for the above-mentioned oily mixed sewage treatment structure, wherein a centrifugal mechanism is further arranged in the cleaning tank, and the centrifugal mechanism comprises a rotating disk rotatably mounted at the bottom of the cleaning tank, and installation units for installing pipes are arranged at intervals in the circumferential direction of the rotating disk; The mounting unit comprises a shell fixedly mounted at intervals on the circumferential edge of the rotating disk, a chuck body is rotatably mounted in the shell, a spiral groove is provided on the end surface of the chuck body, a movable claw is slidably mounted on the spiral groove, and the movable claw is radially slidably mounted on the end surface of the shell; a pinion gear for driving the chuck body to rotate is also arranged on the side of the chuck body, and the pinion gear is externally connected to an independent motor; a guide column for guiding the installation of the pipe fitting is rotatably mounted on the rotating disk, and the guide column is coaxially arranged with the chuck body; A planetary gear is fixedly installed at the lower end of the guide column, and the planetary gears are connected by a planetary carrier; a sun gear is rotatably installed on the negative pressure oil suction pipe, and an inner gear ring is fixedly installed at the bottom of the cleaning box, the sun gear is externally meshed with the planetary gears, and the planetary gears are internally meshed with the inner gear ring; the sun gear is connected to the driving source.

[0010] As a further solution of the present invention, a cleaning assembly is provided on the guide column, and the cleaning assembly includes cleaning brushes arranged on the guide column at intervals along the extension direction of the guide column, the cleaning brushes are hinged on the guide column, and a torsion spring is provided at the hinge between the cleaning brush and the guide column, and the torsion spring drives the cleaning brush to unfold horizontally.

[0011] As a further solution of the present invention, a water inlet is provided at the upper end of the circumferential edge of the cleaning box.

[0012] As a further solution of the present invention, a solid collection bin is provided at the lower end of the circumferential edge of the cleaning box.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The oily mixed sewage treatment structure of the present invention can absorb the oil floating on the upper layer of the cleaning box while cleaning the pipes in the cleaning box, and then collect the absorbed high-concentration oil-containing wastewater for unified treatment. This can avoid the pipes from being attached to the pipes again due to the oil floating on the cleaning liquid surface after the pipes are cleaned and salvaged. On the other hand, compared with treating the wastewater in the entire cleaning box, the method of the present invention reduces the entire wastewater treatment volume and improves the wastewater treatment efficiency. In addition, the pipe oil cleaning machine of the present invention places the pipes vertically in the cleaning box for centrifugal cleaning. On the one hand, the vertical placement allows the oil to rise above the liquid surface in time to avoid attachment to the inner wall of the pipes. On the other hand, centrifugal cleaning quickly separates the oily mixed sewage into oil and water. The lighter oil phase will be centrifugally gathered in the center and absorbed by the negative pressure oil suction pipe, which is convenient for subsequent wastewater treatment. The water phase will continue to stay in the cleaning box to clean the pipes. This greatly reduces the wastewater treatment volume while saving water resources and improves the wastewater treatment efficiency.

[0014] The present invention also adopts the driving mode of the planetary gear system to drive the pipe fittings to rotate centrifugally around the central axis of the cleaning box, so that the planetary gears revolve while rotating. On the one hand, the planetary gears revolve to drive the guide column to revolve, and then drive the pipe fittings on the chuck body to revolve to stir the cleaning liquid, so that the cleaning liquid rotates centrifugally; on the other hand, the self-rotation of the planetary gears cooperates with the design of the cleaning brush on the subsequent guide column so that the cleaning brush cleans the inner wall of the pipe fittings while the pipe fittings revolve, further cleaning the oil stains in the pipe fittings and avoiding the oil stains from remaining in the pipe fittings. In addition, the first rotating shaft and the sun gear of the present invention are both connected to the same driving source, so that when the pipe fittings rotate centrifugally to stir the cleaning liquid, the negative pressure oil suction pipe starts to work and absorb the oil phase; when the pipe fittings stop rotating, the negative pressure oil suction pipe automatically stops working. This arrangement saves power source and does not need to control the negative pressure oil suction mechanism and the centrifugal mechanism separately.

[0015] The present invention also has a floating block fixedly installed on the sliding plate, and the floating block will float on the liquid surface of the cleaning liquid, so when the liquid surface height of the cleaning liquid in the cleaning tank changes, the height of the floating block also changes accordingly, thereby driving the sliding plate to slide vertically to adjust the height of the oil suction port. The height setting of the floating block of the present invention allows the oil suction port to always be located above the liquid surface of the cleaning liquid. When the negative pressure fan is working, the outside air and the oil tank floating above the cleaning liquid are sucked into the negative pressure oil suction pipe together. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of an oily mixed sewage treatment structure and an oily pipe cleaning machine; Figure 2 It is a schematic structural diagram of the pipe oil cleaning machine of the present invention when viewed from the inside; Figure 3 It is a schematic structural diagram of the bottom side view of the pipe oil cleaning machine of the present invention; Figure 4 It is a structural schematic diagram of the centrifugal mechanism of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged view of part A; Figure 6 For the present invention Figure 4 Schematic diagram of the structure when half cut; Figure 7 For the present invention Figure 6 A partial enlarged view of part B.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 11-cleaning box, 12-rotating disk, 13-pipe fittings, 14-negative pressure oil suction pipe, 15-oil suction port, 16-oil outlet, 17-first rotating shaft, 18-negative pressure fan, 19-driving source, 21-housing, 22-chuck body, 23-spiral groove, 24-movable claw, 25-pinion, 26-guide column, 31-planetary gear, 32-planetary carrier, 33-sun gear, 34-inner ring gear, 41-cleaning brush, 51-vertical slide groove, 52-sliding plate, 53-floating block, 61-water inlet, 62-check valve, 63-solid collection bin. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7The present invention provides an oily mixed sewage treatment structure and a pipe fitting 13 oily cleaning machine, comprising a cleaning box 11, wherein a centrifugal mechanism and a negative pressure oil suction mechanism are arranged in the cleaning box 11. The centrifugal mechanism comprises a rotating disc 12 rotatably mounted at the bottom of the cleaning box 11, and mounting units for mounting pipes 13 are arranged at intervals in the circumferential direction of the rotating disc 12; The negative pressure oil suction mechanism includes a negative pressure oil suction pipe 14 fixedly installed in the middle of the cleaning box 11, an oil suction port 15 is opened at the upper end of the negative pressure oil suction pipe 14, and an oil outlet 16 is arranged at the lower end of the negative pressure oil suction pipe 14. A first rotating shaft 17 is vertically mounted in the middle of the negative pressure oil suction pipe 14, a negative pressure fan 18 is fixedly mounted on the first rotating shaft 17, and the first rotating shaft 17 is externally connected to a driving source 19.

[0021] like Figure 1 As shown, when the present invention is working, a cleaning liquid that helps to separate oil and water is first placed in the cleaning box 11, and then the pipe 13 to be cleaned is placed vertically on the centrifugal mechanism in the cleaning box 11, and the pipe 13 is completely immersed in the cleaning liquid. Then the centrifugal mechanism is started to drive the pipe 13 to rotate and stir the cleaning liquid in the cleaning box 11. The pipe 13 is in friction contact with the cleaning liquid, and the oil stains in the pipe 13 will be decomposed and float to the surface of the cleaning liquid. At this time, because the cleaning liquid is centrifugally stirred by the pipe 13, due to the different densities of the oil, water and solid particles in the cleaning liquid, their movement trajectories under the action of centrifugal force will also be different, thereby achieving separation; under the action of centrifugal force, the solid particles with higher density will quickly settle to the bottom of the cleaning box 11, while the oil with lower density will move upward, forming an obvious stratification phenomenon. Because the density of oil is usually less than that of water and solid particles, under the action of centrifugal force, the oil phase will be located in the center of the cleaning box 11. At this time, the negative pressure oil suction mechanism located in the middle of the cleaning box 11 sucks away the separated oil tank for subsequent processing, while the water phase will continue to stay in the cleaning box to clean the pipe 13. After cleaning, the pipe 13 is removed from the centrifugal mechanism and the next pipe 13 is placed, and the cycle repeats. The working process of the negative pressure oil suction mechanism is as follows: Figure 6As shown, when the present invention is working, the driving source 19 drives the first rotating shaft 17 to rotate, and the rotation of the first rotating shaft 17 will drive the negative pressure fan 18 thereon to start working. The operation of the negative pressure fan 18 causes low pressure in the negative pressure oil suction pipe 14, so that the external air pressure will squeeze the oil tank floating above the cleaning liquid into the negative pressure oil suction pipe 14 through the oil suction port 15. Because the present invention places the pipe 13 vertically in the cleaning box 11 for centrifugal cleaning, on the one hand, the vertical placement can make the oil stains rise to the top of the liquid surface in time to avoid adhering to the inner wall of the pipe 13, and on the other hand, the centrifugal cleaning will separate the oil stains and sewage into oil and water, and the lighter oil phase will be centrifugally gathered in the center and sucked by the negative pressure oil suction pipe 14, which is convenient for subsequent wastewater treatment. The water phase will continue to stay in the cleaning box to clean the pipe 13, which greatly reduces the amount of wastewater treatment while saving water resources and improves the efficiency of wastewater treatment.

[0022] As a further solution of the present invention, the mounting unit includes a housing 21 fixedly mounted at intervals on the circumferential edge of the rotating disk 12, a chuck body 22 is rotatably mounted in the housing 21, a spiral groove 23 is opened on the end surface of the chuck body 22, a movable claw 24 is slidably mounted on the spiral groove 23, and the movable claw 24 is radially slidably mounted on the end surface of the housing 21; a pinion 25 for driving the chuck body 22 to rotate is also provided on the side of the chuck body 22, and the pinion 25 is externally connected to an independent motor; a guide column 26 for guiding the installation of the pipe 13 is rotatably mounted on the rotating disk 12, and the guide column 26 is coaxially arranged with the chuck body 22; A planetary gear 31 is fixedly installed at the lower end of the guide column 26, and the planetary gears 31 are connected to each other through a planetary carrier 32; a sun gear 33 is rotatably installed on the negative pressure oil suction pipe 14, and an inner ring gear 34 is fixedly installed at the bottom of the cleaning box 11, the sun gear 33 is externally meshed with the planetary gears 31, and the planetary gears 31 are internally meshed with the inner ring gear 34; the sun gear 33 is connected to the driving source 19.

[0023] The centrifugal cleaning of the present invention requires the pipe 13 to stir the cleaning liquid in the cleaning box 11, so the pipe 13 immersed in the cleaning liquid needs to be fixed on the centrifugal mechanism first. Figure 4 As shown, the present invention uses a three-jaw chuck to fix the circular pipe 13. This method is simple to operate and convenient to use. On the other hand, it can be applied to pipes 13 of different diameters, greatly increasing the applicability of the present invention. The specific working process is as follows Figure 4As shown, during operation, the pipe 13 is placed on the chuck body 22 along the guide column 26, and then the independent motor drives the pinion 25 to rotate, and the pinion 25 drives the chuck body 22 to rotate. At this time, the shell 21 outside the chuck body 22 is stationary, so that the chuck body 22 drives the movable claw 24 to slide radially on the end surface of the shell 21 through the spiral groove 23 to open and support the pipe 13, thereby fixing the pipe 13. The function of the guide column 26 is to guide the pipe 13 to fall on the center of the chuck body 22, so as to facilitate the positioning of the chuck body 22.

[0024] In addition, the present invention also uses a planetary gear train to drive the pipe 13 to rotate centrifugally around the central axis of the cleaning box 11. Figure 3 , Figure 6 As shown, the present invention has a planetary gear 31 fixedly installed at the bottom end of the guide column 26, and the three planetary gears 31 shown in the figure are connected by a planetary carrier 32; a sun gear 33 is rotatably installed on the outer side of the fixed negative pressure oil suction pipe 14, and an inner gear ring 34 is fixedly installed at the bottom of the cleaning box 11. During operation, the driving source 19 drives the sun gear 33 to rotate. At this time, because the inner gear ring 34 is fixedly installed on the stationary cleaning box 11, the inner gear ring 34 is also stationary, so that the planetary gear 31 revolves while rotating. Because the guide column 26 is rotatably installed on the rotating disk 12, the planetary gear 31 revolves and drives the guide column 26 to revolve, and then drives the pipe 13 on the chuck body 22 to revolve and stir the cleaning liquid, so that the cleaning liquid rotates centrifugally. In addition, the self-rotation of the planetary gear 31 cooperates with the design of the cleaning brush 41 on the subsequent guide column 26 so that the cleaning brush 41 cleans the inner wall of the pipe 13 while the pipe 13 revolves, further cleaning the oil stains in the pipe 13 to prevent the oil stains from remaining in the pipe 13. It is worth noting that the first rotating shaft 17 and the sun gear 33 of the present invention are both connected to the same driving source 19, so that when the pipe 13 rotates centrifugally to stir the cleaning liquid, the negative pressure oil suction pipe 14 starts to work to absorb the oil phase; when the pipe 13 stops rotating, the negative pressure oil suction pipe 14 automatically stops working. This arrangement saves power source while eliminating the need to separately control the negative pressure oil suction mechanism and the centrifugal mechanism.

[0025] As a further solution of the present invention, a cleaning assembly is provided on the guide column 26, and the cleaning assembly includes cleaning brushes 41 arranged on the guide column 26 at intervals along the extension direction of the guide column 26, the cleaning brush 41 is hinged on the guide column 26, and a torsion spring is provided at the hinge between the cleaning brush 41 and the guide column 26, and the torsion spring drives the cleaning brush 41 to unfold horizontally.

[0026] Because the oil stains attached to the inside of the pipe 13 are difficult to clean by simply flushing with a cleaning fluid, there will still be oil stains attached, so the present invention provides a cleaning component on the guide column 26. Figure 4As shown, in the present invention, when the pipe 13 is not placed in the cleaning box 11, the cleaning brush 41 on the guide column 26 is horizontally opened under the restoring force of the torsion spring. When the pipe 13 is placed along the guide column 26, the inner wall of the pipe 13 will squeeze the cleaning brush 41, driving the cleaning brush 41 to rotate downward, and at this time, the cleaning brush 41 will be tightly pressed against the inner wall of the pipe 13 under the driving force of the torsion spring. In this way, when the planetary gear 31 rotates while orbiting, the rotation of the planetary gear 31 drives the rotation of the guide column 26, and then drives the cleaning brush 41 to rotate to clean the inner wall of the pipe 13, further cleaning the oil stains in the pipe 13, and preventing the oil stains from remaining in the pipe 13.

[0027] As a further solution of the present invention, a vertical slide groove 51 is opened at the upper end of the negative pressure oil suction pipe 14, a sliding plate 52 is vertically slidably installed in the slide groove, the oil suction port 15 is arranged on the sliding plate 52, and a floating block 53 is also fixedly installed on the sliding plate 52.

[0028] The liquid level of the cleaning liquid of the present invention will change when the cleaning liquid is centrifugally rotated; the liquid level of the cleaning liquid will change when the negative pressure oil suction pipe 14 absorbs the oil phase; the liquid level of the cleaning liquid will change when the cleaning tank 11 is replenished with water. The negative pressure oil suction pipe 14 of the present invention only absorbs the oil tank floating on the cleaning liquid, so the height of the oil suction port 15 on the negative pressure oil suction pipe 14 needs to change with the liquid level of the cleaning liquid in the cleaning tank 11. Figure 5 As shown, the present invention is provided with a long vertical slide groove 51, and the oil suction port 15 is fixedly mounted on the sliding plate 52, and the sliding plate 52 slides vertically in the vertical slide groove 51 to adjust the height of the oil suction port 15. The present invention also has a floating block 53 fixedly mounted on the sliding plate 52, and the floating block 53 floats on the liquid surface of the cleaning liquid, so when the liquid level of the cleaning liquid in the cleaning tank 11 changes, the height of the floating block 53 also changes accordingly, thereby driving the sliding plate 52 to slide vertically to adjust the height of the oil suction port 15. The height setting of the floating block 53 of the present invention enables the oil suction port 15 to always be located above the liquid surface of the cleaning liquid. When the negative pressure fan 18 is working, the outside air and the oil tank floating above the cleaning liquid are sucked into the negative pressure oil suction pipe 14 together.

[0029] As a further solution of the present invention, the floating block 53 is made of rubber. This arrangement is to make the floating block 53 always float on the liquid surface of the cleaning liquid and adjust the height of the oil suction port 15.

[0030] As a further solution of the present invention, a water injection port 61 is provided at the upper end of the circumferential edge of the cleaning box 11. When the present invention sucks the oil tank in the oil pollution, it is inevitable to suck some water into it. As time goes by, the cleaning liquid in the cleaning box 11 will gradually decrease, and it is necessary to replenish the liquid in time. Figure 1As shown, the present invention sets the water injection port 61 at the circumferential edge of the cleaning box 11, so that the water replenishing liquid will not be mixed with the oil tank in the middle of the cleaning box 11 even when the centrifugal mechanism is working, which facilitates water replenishment.

[0031] As a further solution of the present invention, a one-way valve 62 is provided at the oil outlet 16. Figure 7 As shown, the purpose of this arrangement is to allow the collected high-concentration oily wastewater to enter the wastewater treatment container through the oil outlet 16 for treatment to avoid wastewater backflow.

[0032] As a further solution of the present invention, a solid collection bin 63 is provided at the lower end of the circumferential edge of the cleaning box 11. Figure 1 , Figure 3 As shown, when cleaning the pipe 13, there may be solid particles remaining in addition to oil stains. Under the action of centrifugal force, the solid particles with higher density will quickly settle to the bottom of the outer edge of the cleaning box 11. The present invention sets a solid collection bin 63 at this location to facilitate the collection of solid particles.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for treating oily mixed sewage, characterized by: It comprises a cleaning box (11), wherein a negative pressure oil suction mechanism is arranged in the cleaning box (11); The negative pressure oil suction mechanism comprises a negative pressure oil suction pipe (14) fixedly mounted in the middle of the cleaning box (11); an oil suction port (15) is formed at the upper end of the negative pressure oil suction pipe (14); an oil outlet (16) is formed at the lower end of the negative pressure oil suction pipe (14); a first rotating shaft (17) is vertically rotatably mounted in the middle of the negative pressure oil suction pipe (14); a negative pressure fan (18) is fixedly mounted on the first rotating shaft (17); and the first rotating shaft (17) is externally connected to a driving source (19).

2. The oily mixed sewage treatment structure according to claim 1 is characterized by: A vertical slide groove (51) is formed at the upper end of the negative pressure oil suction pipe (14), a sliding plate (52) is vertically slidably mounted in the slide groove, the oil suction port (15) is arranged on the sliding plate (52), and a floating block (53) is also fixedly mounted on the sliding plate (52).

3. The oily mixed sewage treatment structure according to claim 2 is characterized by: The floating block (53) is made of rubber.

4. The oily mixed sewage treatment structure according to claim 2 is characterized by: A one-way valve (62) is provided at the oil outlet (16).

5. A pipe oil cleaning machine, comprising the oily mixed sewage treatment structure according to any one of claims 1 to 4, characterized in that: It also includes a centrifugal mechanism disposed in the cleaning box, the centrifugal mechanism comprising a rotating disk (12) rotatably mounted at the bottom of the cleaning box (11), the rotating disk (12) being provided with mounting units for mounting pipe fittings (13) at intervals in the circumferential direction; The mounting unit comprises a shell (21) fixedly mounted at intervals on the circumferential edge of the rotating disk (12), a chuck body (22) being rotatably mounted in the shell (21), a spiral groove (23) being formed on the end surface of the chuck body (22), a movable claw (24) being slidably mounted on the spiral groove (23), and the movable claw (24) being radially slidably mounted on the end surface of the shell (21); a pinion (25) for driving the chuck body (22) to rotate is also arranged on the side of the chuck body (22), and the pinion (25) is externally connected to an independent motor; a guide column (26) for guiding the installation of the pipe (13) is rotatably mounted on the rotating disk (12), and the guide column (26) is coaxially arranged with the chuck body (22); A planetary gear (31) is fixedly mounted on the lower end of the guide column (26), and the planetary gears (31) are connected to each other via a planetary frame (32); a sun gear (33) is rotatably mounted on the negative pressure oil suction pipe (14), and an inner gear ring (34) is fixedly mounted on the bottom of the cleaning box (11); the sun gear (33) is externally meshed with the planetary gears (31), and the planetary gears (31) are internally meshed with the inner gear ring (34); the sun gear (33) is connected to the driving source (19).

6. The pipe oil cleaning machine according to claim 5, characterized in that: The guide column (26) is provided with a cleaning assembly, the cleaning assembly comprising cleaning brushes (41) arranged on the guide column (26) at intervals along the extension direction of the guide column (26), the cleaning brushes (41) being hinged on the guide column (26), a torsion spring being provided at the hinge between the cleaning brush (41) and the guide column (26), the torsion spring driving the cleaning brush (41) to unfold horizontally.

7. The pipe oil cleaning machine according to claim 6, characterized in that: A water injection port (61) is provided at the upper end of the circumferential edge of the cleaning box (11).

8. The pipe oil cleaning machine according to claim 7, characterized in that: A solid collection bin (63) is provided at the lower end of the circumferential edge of the cleaning box (11).

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