Sludge treatment system for water supply and drainage oil sludge deoiling project

Abstract

The invention discloses a water supply and drainage oil sludge deoiling project sludge treatment system, and relates to the field of sewage treatment in an oil sludge resource treatment process, the water supply and drainage oil sludge deoiling project sludge treatment system comprises a box body, a bearing frame is mounted in the box body, the bearing frame comprises a sludge discharge port, a sludge inlet and a plurality of groups of fixing rods, and a plurality of groups of ring sheet assemblies are mounted outside the plurality of groups of fixing rods in an overlapping manner; each ring piece assembly comprises a static ring piece, an outer movable piece and an inner movable piece, the multiple ring piece assemblies form a sludge dewatering cavity, and a spiral feeding shaft is arranged in the cavity and used for conveying oil sludge. An original integral moving ring piece is divided into two groups of inner moving pieces and outer moving pieces, the spiral feeding shaft drives the inner moving pieces to normally move, water in sludge can be normally filtered, at the moment, the outer moving pieces are located between the two groups of static ring pieces and are fixed, the outer moving pieces play a role in sealing the outer side edges of the inner moving pieces, and after the abrasion loss of the inner moving pieces is gradually increased, the inner moving pieces are separated from the outer moving pieces. Even if the sludge running amount is increased when the sludge passes through the two sides of the inner moving plate, the sludge can be blocked by the outer moving plate on the outer side, so that the waste of oil sludge resources is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment in oil sludge resource treatment process, in particular to a sludge treatment system for an oil sludge deoiling project of supply and drainage. BACKGROUND

[0002] The oil sludge in the oil sludge resource clean treatment system is petrochemical oil sludge in the field of petroleum and chemical industry, which is a hazardous waste generated in the process of oil exploitation, refining, storage and transportation and chemical production, and has the characteristics of high oil content (20%-50%), complex composition (heavy oil, aromatic hydrocarbons, phenols, sulfides and trace heavy metals), strong emulsification stability and high toxicity. The resource clean treatment system for this kind of oil sludge needs to take high-efficiency demulsification and oil removal, deep degradation of toxic pollutants and safe resource utilization as the core target, and adopts the integrated process of “pretreatment + demulsification - catalytic oxidation cooperation + multi-stage separation + high-value resource” to meet the strict environmental protection and safety standards of the petrochemical industry.

[0003] In the process flow of the oil sludge resource clean treatment system, the main components include oil sludge, demulsification reactor, chemical conditioning reactor, electro-catalytic oxidation device, sludge-water separator, sludge dewatering machine and drying device. The sludge-water separator and the sludge dewatering machine belong to the sludge treatment link and are mainly used for separating the sludge, oil and water in the oil sludge. The sludge dewatering machine mechanically dewater the sludge separated by the sludge-water separator in the sludge dewatering machine, and the obtained sludge cake is sent to the “three sludge” drying device of the sewage plant. The separated sewage is discharged into the sewage tank.

[0004] The stacked screw dewatering machine is a common sludge dewatering equipment. The core principle of the stacked screw dewatering machine is the synergistic effect of “screw propulsion + variable cavity compression + dynamic and static ring gap filtration + self-cleaning”. Through the three stages of concentration, dewatering and self-cleaning, the stacked screw dewatering machine realizes continuous solid-liquid separation of sludge. The core advantage of the stacked screw dewatering machine is low blocking, low energy consumption and adaptation to low-concentration sludge. The fixed ring (static ring) and the moving ring (dynamic ring) of the stacked screw dewatering machine are alternately and closely arranged along the axial direction of the screw shaft to form a closed cylindrical filter cavity. The fixed ring is an integral ring structure and is fixed on the equipment rack by a positioning screw + support plate. The fixed ring cannot rotate and move axially and is the fixed support framework of the filter cavity. The moving ring is an integral structure and has an inner hole matched with the blade or shaft shoulder of the screw shaft. The moving ring is not fixedly constrained and can rotate synchronously with the screw shaft at a low speed. The moving ring moves between the two fixed rings. When the stacked screw machine is working, the screw shaft drives the moving ring to rotate, while the fixed ring is stationary. The relative circumferential motion between the sealing surfaces of the two rings is like a “brush”, which can scrape off the sludge particles stuck in the filter gap and prevent the particles from clogging in the filter gap.

[0005] During installation, a shim is installed between the two sets of stationary rings in a screw press. The shim is slightly thicker than the rotating ring, allowing the rotating ring to move freely between the two sets of stationary rings. This provides filtration and self-cleaning through friction. However, screw presses also have drawbacks. For example, sludge can seep between the rotating and stationary rings. After repeated sliding friction, the sludge particles can increase the gap between the rings, leading to sludge leakage. This means that excessive sludge seeps out during dewatering, wasting resources and accelerating wear on the rotating and stationary rings. Therefore, the gap between the rotating and stationary rings must be strictly controlled and maintained during installation and use to ensure adequate water filtration while minimizing sludge leakage. In particular, the screw press needs to be thoroughly cleaned after each use to prevent sludge buildup between the rings, which could prevent the rotating ring from moving properly during subsequent uses. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a sludge treatment system for water supply and drainage oil sludge removal projects, so as to solve the technical problems mentioned in the background above.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sludge treatment system for a water supply and drainage oil sludge removal project, comprising a housing, wherein a support frame is installed inside the housing, the support frame including a sludge discharge port, a sludge inlet port, and multiple sets of fixing rods, and multiple sets of ring plate assemblies are stacked on the outside of the multiple sets of fixing rods, the ring plate assembly including a stationary ring plate, an outer moving plate, and an inner moving plate, the stationary ring plate being movably sleeved on the outside of the multiple sets of fixing rods, the outer moving plate and the inner moving plate being attached to one side of the stationary ring plate, and the outer moving plate and the inner moving plate being located in the middle of the multiple sets of fixing rods, and the inner moving plate being positioned... Sufficient clearance is maintained between the outer moving plate and the inner moving plate in the middle of the outer moving plate. A circular hole is provided on the side of the outer moving plate. A transmission assembly is movably installed inside the circular hole. The transmission assembly includes a transmission rod, which is rotatably connected to the support frame. A cam is provided on the outside of the transmission rod, and the cam matches the circular hole. A spiral feeding shaft is rotatably connected to the center of multiple ring plate assemblies inside the support frame. One end of the spiral feeding shaft is connected to a drive device, and the other end of the spiral feeding shaft is connected to the transmission rod through a transmission mechanism.

[0008] By adopting the above technical solution, the original integral moving ring is redesigned into two sets of inner and outer moving rings. Sufficient clearance is maintained between the inner and outer moving rings, and the installation clearance between the inner and outer moving rings and the two adjacent sets of stationary rings is matched. When the screw press is working, the screw feed shaft drives the inner moving ring to move normally between the two sets of stationary rings and inside the outer moving ring, allowing the water in the sludge to be filtered normally. At this time, the outer moving ring is fixed between the two sets of stationary rings, which acts as a seal on the outer edge of the inner moving ring. Since the outer moving ring does not rotate under normal working conditions, the wear between the outer moving ring and the stationary ring is very small. As the screw press is used, the wear of the inner moving ring gradually increases. Even if the amount of sludge flowing through the sides of the inner moving ring increases, it will be blocked by the outer moving ring. After the sludge fills the space between the inner and outer moving rings, the overall sludge flow will be alleviated, thereby reducing the waste of oily sludge resources.

[0009] The present invention is further configured such that the ring plate assembly includes four sets of gaskets, the four sets of gaskets are respectively sleeved on the outside of multiple sets of fixed rods, the gaskets are distributed between the stationary ring plates of two adjacent sets of ring plate assemblies, and the thickness of the gaskets matches the outer moving plate and the inner moving plate.

[0010] Preferably, a shim is provided to maintain a certain gap between the stationary rings of adjacent ring assemblies for installing the outer and inner moving rings of the ring assemblies. That is, the thickness of the shim is slightly thicker than the thickness of the outer and inner moving rings, ensuring that the outer and inner moving rings can move between the two adjacent sets of stationary rings. However, the thickness of the shim should not be too large to avoid serious mud leakage in the screw press.

[0011] The present invention is further configured such that multiple sets of circular holes are provided on the side of the outer moving plate, and a transmission component is movably installed inside each set of circular holes. Furthermore, multiple sets of cams are provided on the outside of the transmission rods of the multiple sets of transmission components, and the multiple sets of cams correspond to the circular holes on the side of the outer moving plate of each set of ring plate components.

[0012] Preferably, by providing multiple sets of circular holes on the side of the same set of outer moving plates, multiple sets of transmission components can be installed accordingly. The multiple sets of transmission components simultaneously drive and support the outer moving plates, which can improve the stability of the installation and movement of the outer moving plates.

[0013] The present invention is further configured such that the spiral feeding shaft includes a drive shaft with a gradually changing diameter, spiral blades are provided on the outside of the drive shaft with a gradually changing spacing between the spiral blades, and an extension rod is provided at one end of the drive shaft, with a limit block provided on the outside of the extension rod.

[0014] Preferably, the screw feed shaft includes a dewatering section and a thickening section. The diameter of the drive shaft is set to be larger in the thickening section for squeezing sludge, and the spacing of the screw blades is also smaller in the thickening section, which is also for squeezing sludge.

[0015] The present invention is further configured such that a sludge discharge chute is provided on one side of the support frame, and a sludge pressing plate is provided inside the support frame. The sludge pressing plate corresponds to the sludge discharge port. The sludge pressing plate is sleeved on the outside of the extension rod, and a groove matching the limiting block is opened on the inner side of the sludge pressing plate.

[0016] Preferably, a sludge collection box is provided below the sludge discharge chute, and a gap is left between the sludge pressing plate and the sludge discharge port for sludge discharge.

[0017] The present invention is further configured such that the driving device includes a driving motor, the output end of the driving motor is connected to a driving assembly, the driving assembly and the extension rod are connected by transmission, and the driving assembly is provided with a telescopic assembly inside, the end of the telescopic assembly is provided with a fixed frame, and the fixed frame and the mud-pressing plate are rotatably connected.

[0018] Preferably, a drive device is used to rotate the screw feed shaft, and a telescopic component is used to adjust the size of the gap between the mud pressing plate and the mud discharge port, thereby controlling the mud discharge speed.

[0019] The present invention is further configured such that the transmission mechanism includes a housing, the outer wall of the housing and the support frame are fixedly connected, and a transmission gear is provided inside the housing. One end of the transmission gear is connected to a transmission shaft, and multiple sets of electromagnetic clutches are connected to the side of the transmission gear. The multiple sets of electromagnetic clutches are respectively connected to the transmission rods of multiple sets of transmission components.

[0020] Preferably, by setting a transmission mechanism, the rotation of the screw feed shaft can drive the rotation of multiple sets of transmission components, and multiple sets of electromagnetic clutches are set to disconnect and connect the drive connection between the screw feed shaft and the transmission components.

[0021] The present invention is further configured such that a rinsing mechanism is provided on the top of the housing above the support frame, and the rinsing mechanism is used to clean multiple sets of ring plate assemblies.

[0022] Preferably, a rinsing mechanism is provided to spray cleaning water to clean multiple sets of ring plate assemblies.

[0023] In summary, the present invention has the following main beneficial effects: 1. This invention redesigns the original integral moving ring plate into two sets of inner and outer moving ring plates. Sufficient clearance is maintained between the inner and outer moving ring plates, and the installation clearance between the inner and outer moving ring plates and the two adjacent sets of stationary ring plates is matched. When the screw press is working, the spiral feeding shaft drives the inner moving ring plate to move normally between the two sets of stationary ring plates and inside the outer moving ring plate, allowing the water in the sludge to be filtered normally. At this time, the outer moving ring plate is fixed between the two sets of stationary ring plates, which acts as a seal on the outer edge of the inner moving ring plate. Since the outer moving ring plate does not rotate under normal working conditions, the wear between the outer moving ring plate and the stationary ring plate is very small. As the screw press is used, the wear of the inner moving ring plate gradually increases. Even if the amount of sludge flowing through the sides of the inner moving ring plate increases, it will be blocked by the outer moving ring plate. After the sludge fills the space between the inner and outer moving ring plates, the overall sludge flow will be alleviated, thereby reducing the waste of oily sludge resources.

[0024] 2. This invention, by mounting the outer moving plate on the transmission assembly, allows the movement of the outer moving plate to be driven independently. To ensure the efficient cleaning function of the screw press, the outer moving plate still needs to have the movement function when the equipment is stopped, so that the inner and outer moving plates and the stationary ring plate can move and rub against each other, allowing the external water source to fully rinse the inner and outer moving plates. In other words, the setting of the transmission assembly reduces the sludge runoff phenomenon of the screw press while retaining the efficient self-cleaning function, thus reducing the waste of oil sludge resources. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the distribution of the support frame, ring assembly, and transmission assembly of the present invention; Figure 3 This is a schematic diagram of the support frame structure of the present invention; Figure 4 This is a schematic diagram of the ring-shaped assembly structure of the present invention; Figure 5 This is a schematic diagram of the spiral feeding shaft structure of the present invention; Figure 6 This is a schematic diagram showing the connection between the spiral feed shaft and the drive device of the present invention; Figure 7 This is a schematic diagram showing the distribution of the annular plate assembly and the spiral feeding shaft of the present invention; Figure 8 This is a schematic diagram of the transmission mechanism structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the transmission mechanism of the present invention.

[0026] Explanation of reference numerals in the attached figures: 1. Housing; 2. Support frame; 201. Sludge discharge port; 202. Fixing rod; 203. Sludge inlet; 3. Ring plate assembly; 301. Stationary ring plate; 302. Outer moving plate; 303. Inner moving plate; 304. Gasket; 4. Round hole; 5. Transmission assembly; 501. Transmission rod; 502. Cam; 6. Screw feed shaft; 601. Transmission shaft; 602. Screw blade; 603. Extension rod; 604. Limiting block; 7. Sludge pressing plate; 8. Fixing frame; 9. Drive device; 901. Drive motor; 902. Drive assembly; 903. Telescopic assembly; 10. Transmission mechanism; 1001. Outer shell; 1002. Transmission gear; 1003. Electromagnetic clutch; 11. Washing mechanism; 12. Sludge discharge chute. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of the present invention will now be described.

[0029] Please see Figures 1-9 The sludge treatment system for the water supply and drainage oil sludge removal project includes a housing 1. Inside the housing 1 is a support frame 2. The support frame 2 includes a sludge discharge port 201, a sludge inlet 203, and multiple sets of fixed rods 202. The sludge inlet 203 is connected to an oil sludge conveying device. Multiple sets of ring plate assemblies 3 are stacked on the outside of the multiple sets of fixed rods 202. The multiple sets of ring plate assemblies 3 are stacked to form an oil sludge dewatering chamber. The ring plate assembly 3 includes a stationary ring plate 301, an outer moving plate 302, and an inner moving plate 303. The stationary ring plate 301 is movably sleeved on the outside of the multiple sets of fixed rods 202. The outer moving plate 302 and the inner moving plate 303 are attached to one side of the stationary ring plate 301, and are located in the middle of the multiple sets of fixed rods 202, with the inner moving plate 303 located in the middle of the outer moving plate 302. Sufficient clearance is maintained between the outer moving plate 302 and the inner moving plate 303. A circular hole 4 is provided on the side of the outer moving plate 302. A transmission component 5 is movably installed inside the circular hole 4. The transmission component 5 rotates through the circular hole 4 to drive the outer moving plate 302 to move. The transmission component 5 includes a transmission rod 501, which is rotatably connected to the support frame 2. A cam 502 is provided on the outside of the transmission rod 501, which matches the circular hole 4. The support frame 2 is rotatably connected to a spiral feeding shaft 6 located at the center of the multiple ring plate assemblies 3. The spiral feeding shaft 6 rotates to transport the sludge in the cavity from one end of the sludge inlet 203 to one end of the sludge outlet 201. One end of the spiral feeding shaft 6 is connected to a drive device 9, and the other end of the spiral feeding shaft 6 is connected to the transmission rod 501 through a transmission mechanism 10.

[0030] Please refer to the above embodiments for further details. Figure 4 The ring plate assembly 3 also includes four sets of gaskets 304. The four sets of gaskets 304 are respectively sleeved on the outside of multiple sets of fixed rods 202. The gaskets 304 are distributed between the stationary ring plates 301 of two adjacent sets of ring plate assemblies 3, and the thickness of the gaskets 304 matches the outer moving plate 302 and the inner moving plate 303. By setting the gaskets 304, a certain gap is maintained between the stationary ring plates 301 of adjacent ring plate assemblies 3 for installing the outer moving plate 302 and the inner moving plate 303 of the ring plate assembly 3. That is, the thickness of the gaskets 304 is slightly thicker than the thickness of the outer moving plate 302 and the inner moving plate 303, ensuring that the outer moving plate 302 and the inner moving plate 303 can move between two adjacent sets of stationary ring plates 301. However, the thickness of the gaskets 304 should not be too large to avoid serious mud leakage in the screw press.

[0031] Please refer to the above embodiments for further details. Figure 4 Multiple sets of circular holes 4 are provided on the side of the outer moving plate 302. The transmission components 5 are movably installed inside the multiple sets of circular holes 4. The transmission rods 501 of the multiple sets of transmission components 5 are provided with multiple sets of cams 502. The multiple sets of cams 502 correspond to the circular holes 4 on the side of the outer moving plate 302 of each ring plate assembly 3. By providing multiple sets of circular holes 4 on the side of the same set of outer moving plates 302, multiple sets of transmission components 5 can be installed accordingly. The multiple sets of transmission components 5 drive and support the outer moving plate 302 at the same time, which can improve the stability of the installation and movement of the outer moving plate 302.

[0032] Please refer to the above embodiments for further details. Figure 5 The screw feed shaft 6 includes a drive shaft 601 with a gradually changing diameter. The drive shaft 601 has helical blades 602 with a gradually changing spacing. One end of the drive shaft 601 has an extension rod 603, and the extension rod 603 has a limit block 604 on its exterior. The screw feed shaft 6 includes a dewatering section and a thickening section. The diameter of the drive shaft 601 is larger in the thickening section for compressing sludge, and the spacing of the helical blades 602 is smaller in the thickening section, also for compressing sludge.

[0033] Please refer to the above embodiments for further details. Figure 1 , Figure 6 A sludge discharge chute 12 is provided on one side of the support frame 2, and a sludge pressing plate 7 is provided inside the support frame 2. The sludge pressing plate 7 corresponds to the sludge discharge port 201. The sludge pressing plate 7 is sleeved on the outside of the extension rod 603, and a groove matching the limiting block 604 is opened on the inner side of the sludge pressing plate 7. A sludge collection box is provided below the sludge discharge chute 12. A gap is left between the sludge pressing plate 7 and the sludge discharge port 201 for sludge discharge.

[0034] Please refer to the above embodiments for further details. Figure 5 andFigure 6 The driving device 9 includes a drive motor 901, the output end of which is connected to a drive assembly 902. The drive assembly 902 and the extension rod 603 are connected in a transmission manner. The drive assembly 902 is equipped with a telescopic assembly 903 inside. The end of the telescopic assembly 903 is equipped with a fixed frame 8. The fixed frame 8 and the mud-pressing plate 7 are rotatably connected. By setting the drive device 9 to drive the screw feed shaft 6 to rotate, the telescopic assembly 903 is used to adjust the size of the gap between the mud-pressing plate 7 and the mud discharge port 201, thereby controlling the mud discharge speed.

[0035] Please refer to the above embodiments for further details. Figure 8 and Figure 9 The transmission mechanism 10 includes a housing 1001, which is fixedly connected to the outer wall of the support frame 2. A transmission gear 1002 is provided inside the housing 1001. One end of the transmission gear 1002 is connected to the transmission shaft 601, and multiple sets of electromagnetic clutches 1003 are connected to the side of the transmission gear 1002. The multiple sets of electromagnetic clutches 1003 are respectively connected to the transmission rods 501 of multiple sets of transmission components 5. By setting the transmission mechanism 10, the rotation of the screw feeding shaft 6 can drive the rotation of multiple sets of transmission components 5. The multiple sets of electromagnetic clutches 1003 are used to cut off and connect the drive connection between the screw feeding shaft 6 and the transmission components 5.

[0036] Please refer to the above embodiments for further details. Figure 1 The top of the housing 1 is provided with a rinsing mechanism 11 above the support frame 2. The rinsing mechanism 11 is used to clean multiple sets of ring plate assemblies 3. By setting the rinsing mechanism 11, the multiple sets of ring plate assemblies 3 are cleaned by spraying cleaning water.

[0037] In specific operation, the present invention is as follows: the drive motor 901 is started and drives the extension rod 603 to rotate through the drive component 902. The extension rod 603 then drives the spiral feeding shaft 6 to rotate as a whole. Then the sludge conveying equipment is started to convey the sludge to be dewatered to the sludge inlet 203. The spiral feeding shaft 6 rotates so that the spiral blades 602 on its outside rotate synchronously, thereby pushing the sludge to move towards the sludge outlet 201. During the movement, the sludge goes through the dewatering section and the concentration section.

[0038] The rotation of the spiral blade 602 drives the inner moving plate 303 of the multiple ring plate assembly 3 to move. Water resources in the oil sludge are filtered through the gaps, and a small amount of sludge in the oil sludge will penetrate into the space between the stationary ring plate 301 and the inner moving plate 303. The outer moving plate 302 distributed on the outside of the inner moving plate 303 does not move at this time, which can block the penetrating oil sludge. As the equipment continues to operate, the penetrating oil sludge will fill the space between the inner moving plate 303 and the outer moving plate 302. Then the outer moving plate 302 will block the oil sludge from leaking out, but will not block the filtration of water resources. When the oil sludge is dewatered and concentrated, it is discharged from the sludge discharge port 201. The telescopic component 903 will adjust the gap size between the sludge pressing plate 7 and the sludge discharge port 201, so that the oil sludge discharged from the sludge discharge port 201 is further squeezed and dewatered, and falls into the sludge discharge chute 12 for discharge. The water resources extracted during the operation of the screw press are collected and temporarily stored in the sewage tank.

[0039] When the screw press needs to be stopped for cleaning, the rinsing mechanism 11 is started, and the electromagnetic clutch 1003 is engaged, causing the screw feed shaft 6 to drive the transmission gear 1002 to rotate. The transmission gear 1002 drives multiple sets of transmission rods 501 to rotate through the electromagnetic clutch 1003. In turn, the transmission rods 501 drive the cam 502 fixedly installed on its outside to rotate. The cam 502 rotates in the circular hole 4, causing the outer moving plates 302 of the multiple sets of ring plate assemblies 3 to move. At this time, the inner moving plates 303 continue to move under the action of the rotation of the screw feed shaft 6. Thus, in the screw press as a whole, both the outer moving plates 302 and the inner moving plates 303 move. When the clean water sprayed by the rinsing mechanism 11 is on the surface of the multiple sets of ring plate assemblies 3, the clean water slowly penetrates. Combined with the mutual friction between the stationary ring plates 301, the outer moving plates 302 and the inner moving plates 303, the self-cleaning effect of the screw press equipment is completed.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A sludge treatment system for a water supply and drainage oil sludge removal project, comprising a housing (1), characterized in that: The box body (1) is equipped with a support frame (2). The support frame (2) includes a mud discharge port (201), a mud inlet (203), and multiple sets of fixing rods (202). Multiple sets of ring plate assemblies (3) are stacked on the outside of the multiple sets of fixing rods (202). The ring plate assembly (3) includes a stationary ring plate (301), an outer moving plate (302), and an inner moving plate (303). The stationary ring plate (301) is movably sleeved on the outside of the multiple sets of fixing rods (202). The outer moving plate (302) and the inner moving plate (303) are attached to one side of the stationary ring plate (301). The outer moving plate (302) and the inner moving plate (303) are located in the middle of the multiple sets of fixing rods (202), and the inner moving plate (303) is located in the middle of the outer moving plate (302). A floating gap is maintained between (302) and the inner moving plate (303). A circular hole (4) is provided on the side of the outer moving plate (302). A transmission assembly (5) is movably installed inside the circular hole (4). The transmission assembly (5) includes a transmission rod (501). The transmission rod (501) and the support frame (2) are rotatably connected. A cam (502) is provided on the outside of the transmission rod (501). The cam (502) matches the circular hole (4). The inside of the support frame (2) is located at the center of multiple ring plate assemblies (3) and is rotatably connected to a spiral feeding shaft (6). One end of the spiral feeding shaft (6) is connected to a drive device (9). The other end of the spiral feeding shaft (6) is connected to the transmission rod (501) through a transmission mechanism (10).

2. The sludge treatment system for the water supply and drainage oil sludge removal project according to claim 1, characterized in that: The ring assembly (3) also includes four sets of gaskets (304). The four sets of gaskets (304) are respectively sleeved on the outside of multiple sets of fixed rods (202). The gaskets (304) are distributed between the stationary ring pieces (301) of two adjacent sets of ring assemblies (3), and the thickness of the gaskets (304) matches that of the outer moving piece (302) and the inner moving piece (303).

3. The sludge treatment system for the water supply and drainage oil sludge removal project according to claim 2, characterized in that: The circular holes (4) are provided in multiple sets on the side of the outer moving plate (302), and the transmission components (5) are movably installed inside the multiple sets of circular holes (4). The transmission rods (501) of the multiple sets of transmission components (5) are provided with multiple sets of cams (502) on the outside. The multiple sets of cams (502) correspond to the circular holes (4) on the side of the outer moving plate (302) of each ring plate assembly (3).

4. The sludge treatment system for the water supply and drainage oil sludge removal project according to claim 1, characterized in that: The spiral feeding shaft (6) includes a drive shaft (601), the diameter of the drive shaft (601) is gradually changing, the outside of the drive shaft (601) is provided with spiral blades (602), the spacing of the spiral blades (602) is gradually changing, one end of the drive shaft (601) is provided with an extension rod (603), and the outside of the extension rod (603) is provided with a limit block (604).

5. The sludge treatment system for the water supply and drainage oil sludge removal project according to claim 4, characterized in that: The support frame (2) is provided with a sludge discharge chute (12) on one side, and a sludge pressing plate (7) is provided inside the support frame (2). The sludge pressing plate (7) corresponds to the sludge discharge port (201). The sludge pressing plate (7) is sleeved on the outside of the extension rod (603), and a groove matching the limiting block (604) is opened on the inner side of the sludge pressing plate (7).

6. The sludge treatment system for the water supply and drainage oil sludge removal project according to claim 5, characterized in that: The driving device (9) includes a driving motor (901), the output end of the driving motor (901) is connected to a driving assembly (902), the driving assembly (902) and the extension rod (603) are connected in transmission, and the driving assembly (902) is provided with a telescopic assembly (903) inside, and a fixed frame (8) is provided at the end of the telescopic assembly (903), and the fixed frame (8) and the mud pressure plate (7) are rotatably connected.

7. The sludge treatment system for the water supply and drainage oil sludge removal project according to claim 1, characterized in that: The transmission mechanism (10) includes a housing (1001), which is fixedly connected to the outer wall of the support frame (2). A transmission gear (1002) is provided inside the housing (1001). One end of the transmission gear (1002) is connected to the transmission shaft (601). Multiple sets of electromagnetic clutches (1003) are connected to the side of the transmission gear (1002). The multiple sets of electromagnetic clutches (1003) are respectively connected to the transmission rods (501) of multiple sets of transmission components (5).

8. The sludge treatment system for the water supply and drainage oil sludge removal project according to claim 1, characterized in that: The top of the housing (1) is provided with a rinsing mechanism (11) above the support frame (2). The rinsing mechanism (11) is used to clean multiple sets of ring plate assemblies (3).

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