Sludge flocculation stirring device integrated with self-cutting filtering device

Abstract

The present application relates to a kind of sludge flocculation stirring device integrated with self-cutting filter device, which comprises flocculation cylinder, stirring central shaft, driving device, filter device and stirring part;Filter device is made of multiple sets of ring piece assembly with sawtooth cutting part, and moving ring piece and stationary ring piece are staggered to form filter gap;The device adopts stepped filter structure, which can effectively treat sludge with water content ≥97%, and realizes integrated operation of flocculation and dewatering;When the device works, the driving device drives the stirring central shaft to rotate, which realizes sludge flocculation stirring, and prevents filter gap from being blocked by self-cutting effect generated by relative movement of ring piece.The beneficial effects of the present application are: the traditional filter screen is solved by self-cutting mechanism to solve the problem of easy blocking, and the filtering efficiency is improved;The hierarchical filter structure makes the water content of dewatered sludge below 80%;The overall device has the functions of flocculation mixing and continuous dewatering, and reduces energy consumption and maintenance cost.

Description

Technical Field

[0001] This invention belongs to the field of high moisture content sludge treatment technology, and particularly relates to a sludge flocculation and stirring device with an integrated self-cutting filter. Background Technology

[0002] In the field of sludge treatment, flocculation mixers are widely used in the pretreatment of sludge with a water content of ≥97% in scenarios such as secondary sedimentation tanks, primary sedimentation tanks, and homogenization tanks.

[0003] Traditional flocculation mixers, such as belt filter presses and plate and frame filter presses, only have a mixing device and lack a pre-dewatering device. Their function is limited; they rely solely on mechanical mixing to achieve flocculation of sludge and PAM (Polymer Acrylamide) agents, forming sludge flocs for subsequent pressing and dewatering, ultimately reducing the sludge moisture content to around 80% to meet landfill requirements. However, for high-moisture sludge (≥97%), direct flocculation followed by filtration suffers from low dewatering efficiency and high energy consumption.

[0004] To improve efficiency, existing improvement solutions include adding a pre-dewatering device to the upper part of the flocculation cylinder, such as using a 24-mesh steel wire mesh (approximately 0.7 mm × 0.7 mm aperture) as the main dewatering component. However, in practical applications, the steel wire mesh is easily clogged by impurities such as fibers and hair in the flocculent sludge, and the cleaning effect of manual cleaning or additional spraying systems is still not ideal, making it difficult to maintain continuous operation.

[0005] In addition, these devices lack online self-cleaning mechanisms, and frequent shutdowns for maintenance are required when the filter gaps become clogged, which seriously affects processing efficiency and automation levels.

[0006] Therefore, there is an urgent need for an integrated equipment that can simultaneously achieve efficient flocculation, autonomous anti-clogging, and continuous dewatering. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sludge flocculation and stirring device that integrates a self-cutting filter.

[0008] This sludge flocculation and mixing device, which integrates a self-cutting filter, includes:

[0009] The flocculation cylinder has a mud inlet and a chemical dosing inlet in the lower part, a mud outlet in the upper part, and a vent at the bottom.

[0010] The stirring center shaft is located inside the flocculation cylinder;

[0011] The drive unit is located outside the flocculation cylinder, and the output shaft of the drive unit is rigidly coaxially connected to the shaft of the stirring center.

[0012] The filtration device, fitted onto the upper outer side of the mixing center shaft, can aggregate and separate flocculated sludge and water. The flocculated sludge exists in flocculent form and can be trapped outside the filter cartridge. A large amount of free water is filtered out inside the flocculation cartridge, improving the sludge dewatering efficiency of subsequent equipment.

[0013] The frame is fixed on the inner wall of the flocculation cylinder, and the stirring center axis is located on the axis of symmetry of the frame;

[0014] The stirring section is fixedly connected to the bottom end of the stirring center shaft and is located in the lower middle part of the flocculation cylinder; wherein:

[0015] The filtration device comprises at least one set of integrated self-cutting filter elements; each set of filter elements includes a stationary ring plate, a moving ring plate, a stationary ring plate end plate, a moving ring plate end plate, at least two stationary ring plate positioning rods, and at least two moving ring plate positioning rods; several stationary ring plates are detachably connected to the stationary ring plate positioning rods and are located entirely inside all the stationary ring plate positioning rods; the stationary ring plates are fixed to the stationary ring plate end plates via the stationary ring plate positioning rods; the stationary ring plate end plates are detachably connected to the frame connecting rods, and the frame connecting rods are fixedly connected to the frame; several moving ring plates are detachably connected to the moving ring plate positioning rods and are located entirely outside all the moving ring plate positioning rods; the moving ring plates are fixed to the moving ring plate end plates via the moving ring plate positioning rods; the moving ring plate end plates are fixedly connected to the bushing of the stirring center shaft; the bushing (locked by bolts) is detachably connected to the stirring center shaft;

[0016] There is a specific width of gap between adjacent stationary rings on the stationary ring positioning rod, and there is a specific width of gap between adjacent moving rings on the moving ring positioning rod. Along the axial direction of the stirring center shaft, several moving rings are nested inside several stationary rings, and a filtration gap is formed between the moving rings, the moving ring positioning rod, the stationary rings, and the stationary ring positioning rod. In the radial direction of the stirring center shaft, one moving ring is located between two stationary rings. Both the stationary and moving rings have matching cutting sections on the side near the filtration gap, which are used to cut the blockages in the filtration gap. When the sludge flocculation mixer is turned on to stir and flocculate, the stirring center shaft is used to drive all the moving rings to rotate under the drive of the drive device (i.e., the reducer of the mixer), that is, to drive all the moving rings to rotate relative to the stationary rings. The rotation of the moving rings generates centrifugal force and shear force, and the flocculation and filtration are carried out simultaneously, continuously cleaning the filter gaps and removing the dirt from the filter gaps.

[0017] The frame, frame connecting rod, and the outlet side of the filter device form a water collection cylinder. The stirring center shaft passes through the water collection cylinder, and the water collection cylinder is equipped with a corresponding drain outlet.

[0018] Preferably, the cut portion on the side of the stationary ring plate and the moving ring plate near the filter gap is arc-shaped, elliptical, sinusoidal, sawtooth, or rectangular.

[0019] Preferably, the cutting part is serrated.

[0020] Preferably, when the filtration device includes two or more sets of integrated self-cutting filter elements, the multiple sets of integrated self-cutting filter elements constituting the filtration device are arranged as follows:

[0021] The stationary ring plate positioning rod of the first set of filter elements is fixedly connected to the frame connecting rod through the stationary ring plate end plate located at its front end. Starting from the second set, the stationary ring plate end plate at the front end of the next set of filter elements is fixedly connected to the stationary ring plate end plate at the rear end of the stationary ring plate positioning rod of the previous set. The stationary ring plate positioning rod of the last set of filter elements has its own stationary ring plate end plate fixedly connected to its own rear end. Along the axial direction of the stirring center axis, the closer to the stirring part, the smaller the outer diameter of the stationary ring plate in the filter element. The outer diameter of the stationary ring plate in the multi-set integrated self-cutting filter elements decreases sequentially along the axial direction of the stirring center axis.

[0022] The moving ring positioning rods of each filter element are fixedly connected to the bushings of the stirring center shaft through the moving ring end plates located at their front and rear ends; along the axial direction of the stirring center shaft, the closer to the stirring part, the smaller the outer diameter of the moving ring in the filter element; the outer diameter of the stationary ring in the multiple integrated self-cutting filter elements decreases sequentially along the axial direction of the stirring center shaft.

[0023] Each group of integrated self-cutting filter elements is arranged in a stepped manner along the axial direction of the stirring center axis.

[0024] As a preferred option, the sludge flocculation and mixing device is a vertical structure (vertical flocculation mixer).

[0025] Preferably, the frame is fixed on the top inner wall of the flocculation cylinder; the bottom end of the stirring center shaft is fixedly connected to the stirring part through a flange; the output shaft of the drive device is rigidly coaxially connected to the stirring center shaft through a flange; a support frame is also fixed to the outside of the flocculation cylinder to support the entire flocculation cylinder; the bottom of the support frame is also provided with multiple feet to support the support frame fixedly connected to the flocculation cylinder on the ground or a set horizontal surface.

[0026] The working method of this sludge flocculation and mixing device with integrated self-cutting filtration includes the following steps:

[0027] Sludge with high water content (≥97%) is transported into the flocculation cylinder through the sludge inlet, and at the same time, chemicals are added into the flocculation cylinder through the chemical dosing inlet. Water, sludge and chemicals enter the flocculation cylinder at the same time.

[0028] Then the drive device is turned on, and the drive device drives the stirring center shaft to rotate. The stirring center shaft drives the stirring part to stir and mix quickly. The sludge is quickly separated from the water to form flocculent sludge. The water and flocculent sludge are separated into layers to form a free water layer on the upper side (in which a large amount of water is still mixed with the sludge) and a sludge layer on the lower side.

[0029] The water in the free water layer rises continuously as the swirling flow generated by the stirring shaft and the amount of water-containing sludge gradually increases, passing through the filtration device. The rotation of the stirring shaft causes the moving rings within the filtration device to rotate relative to the stationary rings. The sludge remaining in the free water layer is intercepted and retained in the filtration gaps. While the filtration device is filtering, the cutting parts on both the moving and stationary rings cut the contaminants in the filtration gaps due to the rotation of the moving rings relative to the stationary rings. The contaminants in the filtration gaps return to the free water layer under the influence of the swirling flow and gradually settle into the sludge layer under their own gravity. The filtration device can effectively filter and separate clean water and retain sludge in the outer cylinder of the filtration device.

[0030] The water in the free water layer is filtered out by the filtration device to produce clean water. The clean water flows into the inner cavity of the filtration device and then into the water collection cylinder, and is continuously discharged from the drain outlet.

[0031] The flocculent sludge from the sludge layer is discharged from the vent for further treatment.

[0032] As a preferred embodiment, after the sludge flocculation and stirring device with integrated self-cutting filter performs flocculation and filtration treatment on the water-containing sludge, it also includes a cleaning step for the sludge flocculation and stirring device; the sludge outlet is used to discharge the sludge cleaned out after cleaning the flocculation cylinder.

[0033] The beneficial effects of this invention are:

[0034] This invention integrates a self-cutting filter and a sludge flocculation and mixing device, simultaneously achieving high-efficiency dewatering and anti-clogging requirements. Specifically, the serrated cutting sections on the moving and stationary ring plates generate relative motion under the drive of the mixing central shaft, dynamically cutting contaminants such as fibers and hair in the filter gaps, effectively avoiding the clogging problems of traditional filters and significantly reducing the frequency of downtime for cleaning. Multiple sets of filter elements are arranged in a stepped manner along the axial direction. Through the progressively decreasing outer diameter of the ring plates and the filter gaps, the contaminants are graded and intercepted, efficiently separating flocculent sludge from free water. Actual measurements show that the moisture content of the sludge after dewatering can be reduced from over 97% to below 80%. In this invention, the filter device and flocculation cylinder are integrated into a single design, and the frame and bushing are compactly fixed, simultaneously achieving mixing, flocculation, and continuous dewatering functions, reducing reliance on external equipment and lowering energy consumption and maintenance costs. The detachable ring plate structure and buffer sealing structure support rapid maintenance, ensuring long-term stable operation of the device under high-load sludge treatment. This invention ultimately overcomes the technical bottlenecks of low dewatering efficiency and frequent clogging in the treatment of sludge with high water content, and provides an innovative solution for sludge pretreatment processes. Attached Figure Description

[0035] Figure 1 A schematic diagram of a sludge flocculation and mixing device integrating a self-cutting filter.

[0036] Figure 2 This is a schematic diagram of the filtration device.

[0037] Figure 3 This is a simplified enlarged diagram of the stationary and moving ring plates in the filter device after assembly.

[0038] Figure 4 A simplified assembly diagram of the moving ring plate;

[0039] Figure 5 This is a simplified assembly diagram of the stationary ring plate;

[0040] Figure 6 A top view of the sludge flocculation and mixing device;

[0041] Figure 7 A schematic diagram of a stationary annular plate with serrated cut sections;

[0042] Figure 8 A schematic diagram of a moving ring plate with serrated cutting sections;

[0043] Explanation of reference numerals in the attached drawings: 1. Stationary ring plate; 2. Stirring center shaft; 3. Moving ring plate; 4. Filter device; 5. Stationary ring plate positioning rod; 6. Moving ring plate positioning rod; 7. Water collection cylinder; 8. Flocculation cylinder; 9. Stirring section; 10. Flange; 11. Drive device; 12. Support frame; 13. Support leg; 14. Drain outlet; 15. Dosing port; 16. Mud inlet; 17. Mud outlet; 18. Vent outlet; 19. Liquid level; 20. Vertical flocculation mixer; 21. Moving ring plate end plate; 22. Stationary ring plate end plate; 23. Frame connecting rod; 24. Frame; 25. Cutting section. Detailed Implementation

[0044] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0045] Example 1

[0046] like Figures 1 to 8 As shown, a sludge flocculation and mixing device integrating a self-cutting filter is a vertical flocculation mixer 20, vertically installed, with external inlet and internal outlet, comprising:

[0047] The flocculation cylinder 8 has a mud inlet 16 and a chemical dosing inlet 15 in its lower part, a mud outlet 17 in its upper part, and a vent 18 at its bottom. A support frame 12 is also provided on the outside of the flocculation cylinder 8 to support the entire flocculation cylinder. The bottom of the support frame 12 is also provided with multiple support legs 13 to support the support frame that is fixed to the flocculation cylinder on the ground or a set horizontal surface.

[0048] The stirring center shaft 2 is located inside the flocculation cylinder 8;

[0049] The drive device 11 is located outside the flocculation cylinder 8, and the output shaft of the drive device 11 is rigidly coaxially connected to the stirring center shaft 2 through the flange 10.

[0050] The filter device 4 is sleeved on the upper side of the mixing center shaft 2. It can aggregate and separate the flocculated sludge and water. The flocculated sludge exists in flocculent form and can be trapped outside the filter cylinder. A large amount of free water is filtered out inside the flocculation cylinder, which improves the sludge dewatering efficiency of subsequent equipment.

[0051] The frame 24 is fixedly installed on the inner side wall of the top of the flocculation cylinder 8, and the stirring center shaft 2 is located on the axis of symmetry of the frame 24;

[0052] The stirring section 9 is fixedly connected to the bottom end of the stirring center shaft 2 via flange 10 and is located in the lower middle part of the flocculation cylinder 8; wherein:

[0053] The filter device 4 consists of three sets of integrated self-cutting filter elements; each set of filter elements includes a stationary ring plate 1, a moving ring plate 3, a stationary ring plate end plate 22, a moving ring plate end plate 21, four stationary ring plate positioning rods 5, and four moving ring plate positioning rods 6; several stationary ring plates 1 are detachably connected to the stationary ring plate positioning rods 5, and are located inside all the stationary ring plate positioning rods 5. The stationary ring plates 1 are fixed to the stationary ring plate end plate 22 by the stationary ring plate positioning rods 5, and the stationary ring plate end plate 22 is detachably connected to the frame connecting rod. 23, the frame connecting rod 23 is fixedly connected to the frame 24; several moving ring plates 3 are detachably connected to the moving ring plate positioning rods 6, and are located outside all the moving ring plate positioning rods 6. The moving ring plates 3 are fixed to the moving ring plate end plate 21 through the moving ring plate positioning rods 6. The moving ring plate end plate 21 is fixedly connected to the bushing of the stirring center shaft 2. The bushing (locked by bolts) is detachably connected to the stirring center shaft 2; between the three sets of integrated self-cutting filter elements that make up the filter device 4: the stationary ring plate positioning rod of the first set of filter elements 5. The frame connecting rod 23 is fixedly connected to the stationary ring plate 22 located at its front end. The stationary ring plate 22 at the front end of the next set of filter elements is fixedly connected to the stationary ring plate 22 at the rear end of the stationary ring positioning rod 5 of the previous set. The stationary ring positioning rod 5 of the last set of filter elements is fixedly connected to its own stationary ring plate 22 at its rear end. Along the axial direction of the stirring center shaft 2, the closer to the stirring part 9, the smaller the outer diameter of the stationary ring 1 in the filter element. The outer diameter of the stationary ring in the multiple sets of integrated self-cutting filter elements decreases sequentially along the axial direction of the stirring center shaft. The moving ring positioning rod 6 of each set of filter elements is fixedly connected to the bushing of the stirring center shaft 2 through the moving ring plate 21 located at its front and rear ends. Along the axial direction of the stirring center shaft 2, the closer to the stirring part 9, the smaller the outer diameter of the moving ring 3 in the filter element. The outer diameter of the stationary ring in the multiple sets of integrated self-cutting filter elements decreases sequentially along the axial direction of the stirring center shaft. The three sets of integrated self-cutting filter elements are arranged in a stepped manner along the axial direction of the stirring center shaft 2.

[0054] A specific width of gap exists between adjacent stationary rings 1 on the stationary ring positioning rod 5, and a specific width of gap exists between adjacent moving rings 3 on the moving ring positioning rod 6; along the axial direction of the stirring center shaft 2, several moving rings 3 are nested inside several stationary rings 1, and a filter gap is formed between the several moving rings 3, the moving ring positioning rod 6, the several stationary rings 1, and the stationary ring positioning rod 5; and in the radial direction of the stirring center shaft 2, one moving ring 3 is located between two stationary rings 1; the stationary rings 1 and the moving rings 3... On the side of plate 2 near the filter gap, there are serrated cutting parts 25 with matching shapes. The cutting parts 25 are used to cut the blockage in the filter gap. When the sludge flocculation mixer is turned on to make the mixing part mix and flocculate, the mixing center shaft 2 is used to drive all the moving ring plates 3 to rotate under the drive of the drive device 11 (i.e. the reducer of the mixer). That is, it drives all the moving ring plates to rotate relative to the stationary ring plates. The rotation of the moving ring plates generates centrifugal force and shear force, and the filter is cut while mixing and flocculating, continuously cleaning the filter gap and removing the dirt from the filter gap.

[0055] The frame 24, the frame connecting rod 23 and the outlet side of the filter device 4 form a water collection cylinder 7, the stirring center shaft 2 passes through the water collection cylinder 7, and the water collection cylinder 7 is provided with a corresponding drain outlet 14.

[0056] Example 2

[0057] Based on Example 1, the working method of the vertical flocculation mixer 20 includes the following steps:

[0058] Sludge with high water content (water content ≥ 97%) is transported into the flocculation cylinder 8 through the sludge inlet 16. At the same time, chemicals are added into the flocculation cylinder 8 through the chemical dosing inlet 15. Water, sludge and chemicals enter the flocculation cylinder 8 at the same time.

[0059] Then the drive device 11 is turned on, the drive device 11 drives the stirring center shaft 2 to rotate, the stirring center shaft 2 drives the stirring part 9 to stir and mix quickly, the sludge quickly precipitates from the water to form flocculent sludge, the water and flocculent sludge separate into layers to form a free water layer on the upper side (a large amount of water in the free water layer is still mixed with the sludge) and a sludge layer on the lower side.

[0060] The water in the free water layer rises continuously through the swirling flow generated by the stirring shaft 2 and as the amount of water-containing sludge gradually increases. The rotation of the stirring shaft 2 causes the moving ring 3 inside the filter device 4 to rotate relative to the stationary ring 1. The sludge remaining in the free water layer is intercepted and retained in the filter gap by the filter device 4. While the filter device 4 is filtering, the cutting parts 25 on the moving ring 3 and the stationary ring 1 cut the dirt in the filter gap due to the rotation of the moving ring 3 relative to the stationary ring 1. The dirt in the filter gap returns to the free water layer under the influence of the swirling flow and gradually settles into the sludge layer under its own gravity. The filter device can effectively filter and separate clean water and retain sludge in the outer cylinder of the filter device.

[0061] The water in the free water layer is filtered out by the filter device 4 to produce clean water. The clean water flows into the inner cavity of the filter device 4 and then into the water collection cylinder 7, and is continuously discharged from the drain outlet 14.

[0062] The flocculent sludge from the vent 18 is discharged for further treatment.

[0063] After the sludge flocculation and stirring device with integrated self-cutting filter performs flocculation and filtration treatment on the water-containing sludge, it also includes a cleaning step for the sludge flocculation and stirring device; the sludge outlet 17 is used to discharge the sludge cleaned out after the flocculation cylinder 8 is cleaned.

Claims

1. A sludge flocculation and mixing device integrating a self-cutting filter, characterized in that, include: The flocculation cylinder has a sludge inlet and a chemical dosing inlet in its lower part, a sludge outlet in its upper part, and a vent outlet at its bottom. The stirring center shaft is located inside the flocculation cylinder; A drive device is located outside the flocculation cylinder, and the output shaft of the drive device is rigidly coaxially connected to the stirring center shaft. A filter device is fitted onto the upper middle side of the stirring center shaft. The frame is fixedly mounted on the inner wall of the flocculation cylinder, and the stirring center axis is located on the axis of symmetry of the frame; The stirring section is fixedly connected to the bottom end of the stirring center shaft and is located in the lower middle part of the flocculation cylinder; wherein: The filtration device comprises at least one set of integrated self-cutting filter elements; each set of filter elements includes a stationary ring plate, a moving ring plate, a stationary ring plate end plate, a moving ring plate end plate, at least two stationary ring plate positioning rods, and at least two moving ring plate positioning rods; several stationary ring plates are detachably connected to the stationary ring plate positioning rods and are located entirely inside all the stationary ring plate positioning rods; the stationary ring plates are fixed to the stationary ring plate end plates via the stationary ring plate positioning rods; the stationary ring plate end plates are detachably connected to the frame connecting rods; the frame connecting rods are fixedly connected to the frame; several moving ring plates are detachably connected to the moving ring plate positioning rods and are located entirely outside all the moving ring plate positioning rods; the moving ring plates are fixed to the moving ring plate end plates via the moving ring plate positioning rods; the moving ring plate end plates are fixedly connected to the bushing of the stirring center shaft; the bushing is detachably connected to the stirring center shaft. A specific width of gap exists between adjacent stationary rings on the stationary ring positioning rod, and a specific width of gap exists between adjacent moving rings on the moving ring positioning rod. Along the axial direction of the stirring center shaft, several moving rings are nested within several stationary rings, forming a filter gap between the moving rings, the moving ring positioning rod, the stationary rings, and the stationary ring positioning rod. Furthermore, in the radial direction of the stirring center shaft, one moving ring is located between two stationary rings. Both the stationary and moving rings have matching cutting portions on the side closest to the filter gap, used to cut blockages in the filter gap. The stirring center shaft is used to drive all moving rings to rotate under the drive of a driving device. The frame, the frame connecting rod, and the outlet side of the filter device form a water collection cylinder, the stirring center shaft passes through the water collection cylinder, and the water collection cylinder is provided with a corresponding drain outlet.

2. The sludge flocculation and stirring device with integrated self-cutting filtration device according to claim 1, characterized in that: The cut portion on the side of the stationary ring plate and the moving ring plate near the filter gap is arc-shaped, elliptical, sinusoidal, sawtooth-shaped, or rectangular.

3. The sludge flocculation and stirring device with integrated self-cutting filtration according to claim 2, characterized in that: The cutting section is serrated.

4. The sludge flocculation and stirring device with integrated self-cutting filtration according to claim 1, characterized in that, When the filtration device includes two or more sets of integrated self-cutting filter elements, the multiple sets of integrated self-cutting filter elements constituting the filtration device are as follows: The stationary ring plate positioning rod of the first group of filter elements is fixedly connected to the frame connecting rod by the stationary ring plate end plate located at its front end. Starting from the second group, the stationary ring plate end plate at the front end of the next group of filter elements is fixedly connected to the stationary ring plate end plate at the rear end of the stationary ring plate positioning rod of the previous group. The stationary ring plate positioning rod of the last group of filter elements has its own stationary ring plate end plate fixedly connected to its own rear end. Along the axial direction of the stirring center axis, the closer to the stirring part, the smaller the outer diameter of the stationary ring plate in the filter element. The moving ring positioning rods of each filter element are fixedly connected to the bushings of the stirring center shaft by moving ring end plates located at their front and rear ends; along the axial direction of the stirring center shaft, the closer to the stirring part, the smaller the outer diameter of the moving rings in the filter element; Each group of integrated self-cutting filter elements is arranged in a stepped manner along the axial direction of the stirring center axis.

5. The sludge flocculation and stirring device with integrated self-cutting filtration device according to claim 1, characterized in that: The sludge flocculation and mixing device is a vertical structure.

6. The sludge flocculation and stirring device with integrated self-cutting filtration according to claim 5, characterized in that: The frame is fixedly mounted on the inner top wall of the flocculation cylinder; the bottom end of the stirring center shaft is fixedly connected to the stirring part via a flange; the output shaft of the drive device is rigidly coaxially connected to the stirring center shaft via a flange; a support frame is also fixed to the outside of the flocculation cylinder; and multiple support legs are provided at the bottom of the support frame.

7. A method for operating a sludge flocculation and stirring device with an integrated self-cutting filter as described in claim 4, characterized in that, Includes the following steps: Water-containing sludge is transported into the flocculation cylinder through the sludge inlet, and at the same time, chemicals are added into the flocculation cylinder through the chemical dosing inlet. Water, sludge and chemicals enter the flocculation cylinder at the same time. Then the drive device is turned on, and the drive device drives the stirring center shaft to rotate. The stirring center shaft drives the stirring part to stir and mix quickly. The sludge is separated from the water to form flocculent sludge. The water and flocculent sludge are separated into layers to form a free water layer on the upper side and a sludge layer on the lower side. The water in the free water layer passes through the filtration device under the influence of the swirling flow generated by the stirring center shaft. The rotation of the stirring center shaft causes the moving ring plate in the filtration device to rotate relative to the stationary ring plate. The sludge remaining in the free water layer is intercepted and retained in the filtration gap by the filtration device. While the filtration device is filtering, the cutting parts on the moving ring plate and the stationary ring plate cut the dirt in the filtration gap due to the rotation of the moving ring plate relative to the stationary ring plate. The dirt in the filtration gap returns to the free water layer under the influence of the swirling flow and gradually settles into the sludge layer. The water in the free water layer is filtered out by the filtration device to produce clean water. The clean water flows into the inner cavity of the filtration device and then into the water collection cylinder, and is discharged from the drain outlet. The flocculent sludge from the vent is discharged.

8. The working method according to claim 7, characterized in that: After the sludge flocculation and stirring device of the integrated self-cutting filter performs flocculation and filtration treatment on the water-containing sludge, the process also includes a cleaning step for the sludge flocculation and stirring device; the sludge outlet is used to discharge the sludge cleaned out after cleaning the flocculation cylinder.

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