A centrifugal sludge suspension separation device

Abstract

The present application relates to centrifugal separation technical field, specifically to a kind of sludge suspension centrifugal separation equipment, including frame, rotating column, part board, filter bag, adjusting device, frame is fixed with outer cylinder;Outer cylinder axis is vertically arranged;Coaxially be equipped with inner cylinder in outer cylinder;Inner cylinder is rotatably installed in outer cylinder;Multiple part boards are enclosed into the rotating drum with upper end being cylindrical, lower end being funnel-shaped with small end downward;Adjusting gap is equipped between adjacent part boards;Swing bar is equipped between part board and inner cylinder;Swing bar is horizontally arranged along the radial direction of inner cylinder, one end is hinged with the upper end of inner cylinder, the other end is hinged with the upper end of part board;When inner cylinder rotates, adjusting device extrudes the excess part of filter bag into adjusting gap, so that filter bag and part board are fully attached, avoid wrinkle at the contact of filter bag and part board, thereby avoid uneven distribution of filter cake on filter bag to cause vibration, which leads to the reduction of equipment life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of centrifugal separation, in particular to a centrifugal separation equipment for sludge suspension. BACKGROUND

[0002] The centrifugal separation equipment is used for the treatment of sludge suspension. The centrifugal separation is a process of separating the solid particles from the liquid in the sludge by centrifugal force, which is widely used in the fields of sewage treatment and industrial sludge dewatering. The draw-bag centrifuge is a kind of intermittent operation filter centrifuge, which is mainly used for solid-liquid separation, especially suitable for materials requiring high-purity solid products or easy to block the filter cloth.

[0003] The draw-bag centrifuge in the prior art comprises an outer cylinder, a rotating drum is rotatably installed in the outer cylinder, the upper part of the rotating drum is in a cylindrical shape, the lower part is in a funnel shape with a small end downward, a plurality of through holes are formed on the side wall of the rotating drum, a filter bag is lined in the rotating drum, the filter bag is attached to the inner surface of the rotating drum, the upper end of the filter bag is fixed to the outer cylinder, and the lower end of the filter bag is fixed with a draw-bag frame, the draw-bag frame is controlled to move up and down by a pneumatic cylinder, an inclined disc distributor is arranged at the upper end of the filter bag, in use, the rotating drum is driven to rotate the filter bag, the sludge suspension is uniformly distributed on the surface of the filter bag by the inclined disc distributor, the centrifugal force generated by the rotation of the rotating drum causes the water in the sludge suspension to be thrown out of the rotating drum through the plurality of through holes, and the sludge solids are retained on the surface of the filter bag to form a filter cake layer, when the filter cake layer reaches a certain thickness, the material layer controller controls the feeding to be stopped, and a scraper is driven to remove the filter cake layer, the sludge solids are discharged from the lower end of the filter bag, then the pneumatic cylinder drives the draw-bag frame to pull down the lower end of the filter bag, and the filter bag is straightened, so that the sludge solids remaining on the surface of the filter bag are deformed and broken, and then fall off, thereby achieving the unloading of the sludge solids from the filter bag. However, in the prior art, there may be a difference between the size of the filter bag and the size of the rotating drum, when the diameter of the filter bag is smaller than the inner diameter of the rotating drum, the filter bag cannot be well attached to the rotating drum, and under the action of centrifugal force, the local tension of the filter bag is too large and the filter bag is easily damaged, when the diameter of the filter bag is larger than the inner diameter of the rotating drum, the filter bag is easily wrinkled when it is attached to the rotating drum, which causes the filter cake on the filter bag to be unevenly distributed and causes vibration, thereby reducing the service life of the equipment. SUMMARY

[0004] The present application provides a centrifugal separation equipment for sludge suspension to solve the above problems.

[0005] The centrifugal separation equipment for sludge suspension of the present application adopts the following technical scheme: a centrifugal separation equipment for sludge suspension, comprising a rack, a rotating column, a partition plate, a filter bag and an adjusting device.

[0006] The outer cylinder is fixed on the rack; the axis of the outer cylinder is vertically arranged; the inner cylinder is coaxially arranged in the outer cylinder; the inner cylinder is rotatably installed in the outer cylinder; the drive assembly is arranged between the inner cylinder and the rack; and the drive assembly drives the inner cylinder to rotate.

[0007] The rotating column is coaxially installed inside the inner cylinder; the rotating column and the inner cylinder slide vertically together; a moving component is provided between the rotating column and the frame; the moving component is used to drive the rotating column to move up and down.

[0008] Multiple partition plates are provided, evenly distributed along the circumference of the rotating column between the rotating column and the inner cylinder; the partition plates have through holes; the multiple partition plates form a funnel-shaped rotating drum with a cylindrical upper end and a small end facing downwards; there is an adjustment gap between adjacent partition plates; a rocker arm is provided between the partition plates and the inner cylinder; the rocker arm is set horizontally along the radial direction of the inner cylinder, with one end hinged to the upper end of the inner cylinder and the other end hinged to the upper end of the partition plate; a torsion spring is connected between the rocker arm and the inner cylinder; the lower end of the partition plate and the rotating column are slidably engaged along the radial direction of the inner cylinder through a sliding assembly.

[0009] The filter bag is placed inside the rotating drum; the filter bag is a cylindrical shape with openings at the top and bottom, and the openings at the top and bottom are of the same diameter; this facilitates the one-piece molding of the filter bag. Compared with the traditional filter bags made by sewing to achieve the shape of the upper cylinder and lower hopper, the filter bag in this solution can reduce the seams, prevent solid particles from escaping from the seams, and make the separation effect better; the upper end of the filter bag is fixed to the upper end of the inner cylinder, and the lower end is fixedly connected to the lower end of the dividing plate; the filter bag is attached to the dividing plate; a feeding device is provided inside the upper opening of the filter bag; the feeding device is used to evenly sprinkle the sludge suspension onto the filter bag.

[0010] The adjusting device is located inside the filter bag and within the adjusting gap. When the inner cylinder rotates, the adjusting device squeezes the excess part of the filter bag into the adjusting gap, ensuring a full fit between the filter bag and the dividing plate. This prevents wrinkles at the contact point between the filter bag and the dividing plate, thus avoiding uneven distribution of the filter cake on the filter bag, which could cause vibration and reduce the equipment's lifespan. The adjusting device includes a sliding rod and a swing rod. The sliding rod extends vertically. The upper end of the sliding rod is slidably mounted on the upper end of the inner cylinder along its radial direction. A spring connects the sliding rod and the inner cylinder. The sliding rod abuts against the inner wall of the filter bag. The swing rod is located below the sliding rod, extending vertically, with its upper end hinged to the lower end of the sliding rod. The swing rod abuts against the inner wall of the filter bag. When the inner cylinder rotates, under the action of centrifugal force, the sliding rod and the swing rod move away from the rotating column radially along the inner cylinder, squeezing the excess part of the filter bag into the adjustment gap, so that the filter bag and the dividing plate are fully fitted, avoiding wrinkles at the contact point between the filter bag and the dividing plate, thereby avoiding uneven distribution of filter cake on the filter bag and causing vibration, which would reduce the service life of the equipment. This makes the filter bag size and the size of the drum formed by the dividing plate have a higher compatibility.

[0011] Furthermore, the sliding assembly includes a slip ring and a sliding column; the slip ring is fixed to the lower end of the dividing plate; multiple sliding columns are provided and distributed circumferentially along the rotating column; the axis of the sliding column is arranged radially along the rotating column; the sliding column is fixed to the side wall of the rotating column; the sliding column and the slip ring are slidably engaged. After filtration, the moving assembly drives the rotating column downward, and the rotating column pulls the lower end of the dividing plate through the sliding columns, causing the upper end of the dividing plate to pull the swing arm from a horizontal state to a vertical state. As the dividing plate moves downward, it moves away from the rotating column, so that the projections of the lower end of the dividing plate and the upper end of the filter bag on the horizontal plane coincide, allowing the upper and lower ends of the filter bag to overlap on the horizontal plane, making the filter bag vertically unobstructed. This avoids the problem in the prior art where the filter bag cannot be stretched vertically when pulled down, thus preventing the residual filter cake from detaching from the filter bag; and improves the filter cake discharge efficiency. At the same time, compared with the prior art, the lower opening of the filter bag is larger during unloading, making unloading faster and more convenient.

[0012] Furthermore, a fixed cylinder is coaxially fixed on the bottom wall of the inner cylinder; the lower end of the rotating column is sleeved on the upper end of the fixed cylinder, and the two slide up and down through a spline.

[0013] Furthermore, the drive assembly includes a drive motor and a drive wheel; the drive motor is fixed to the frame; a power wheel is fixed to the output shaft of the drive motor; the drive wheel is coaxially and rotatably mounted on the lower end of the outer cylinder; the drive wheel and the power wheel are driven by a belt; a rotating shaft is coaxially provided at the axis of the drive wheel; the upper end of the rotating shaft is fixedly connected to the rotating column, and the lower end is in sliding engagement with the drive wheel via a spline. The rotating shaft drives the rotating column to rotate, and the rotating column drives the inner cylinder to rotate.

[0014] Furthermore, the moving component includes a cylinder; the cylinder is located below the rotating shaft; the cylinder is fixed on the frame; the piston rod of the cylinder and the rotating shaft are rotatably engaged.

[0015] Furthermore, the lower end of the inner cylinder sidewall is recessed to form a flange; an outlet is provided on the flange; a drain pipe is provided on the outer cylinder; the drain pipe is located below the outlet; water enters between the inner and outer cylinders through the outlet and is then discharged from the drain pipe. The water centrifuged and spun out passes through the filter bag and the separator in sequence, then flows through the outlet to between the inner and outer cylinders, and is discharged from the outer cylinder through the drain pipe.

[0016] Furthermore, a discharge port is provided at the lower end of the inner cylinder.

[0017] Furthermore, a scraper is installed inside the filter bag; the scraper is located at the upper end of the outer cylinder and moves up and down via an electric push rod. When the filter cake thickness on the filter bag reaches the preset thickness, feeding is stopped, and the scraper moves up and down to scrape off the filter cake.

[0018] Furthermore, the feeding device includes a feeding slant and a feed inlet; the axis of the feeding slant is inclined relative to the axis of the inner cylinder; the feeding slant is rotatably mounted on the upper end of the outer cylinder; a feeding motor is fixedly mounted on the upper end of the outer cylinder; the output shaft of the feeding motor is fixedly connected to the feeding slant; the feed inlet is located above the feeding slant. The feeding motor drives the feeding slant to rotate, and the sludge suspension is transported from the feed inlet to the feeding slant, and then evenly spread onto the filter bags by the feeding slant.

[0019] The beneficial effects of this invention are: when the inner cylinder rotates, the adjusting device squeezes the excess part of the filter bag into the adjusting gap, so that the filter bag and the dividing plate are fully fitted, avoiding wrinkles at the contact point between the filter bag and the dividing plate, thereby avoiding uneven distribution of filter cake on the filter bag and causing vibration, which would reduce the life of the equipment.

[0020] Furthermore, after filtration, the moving component drives the rotating column downwards. The rotating column pulls the lower end of the separator plate via a sliding column, causing the upper end of the separator plate to swing from a horizontal to a vertical position. This downward movement of the separator plate away from the rotating column ensures that the projections of the lower end of the separator plate and the upper end of the filter bag on the horizontal plane coincide. This overlaps the projections of the upper and lower ends of the filter bag on the horizontal plane, allowing the filter bag to flow vertically. This avoids the problem in existing technologies where the filter bag cannot be stretched vertically when pulled down, thus preventing residual filter cake from detaching from the filter bag; and improves filter cake discharge efficiency. Simultaneously, compared to existing technologies, the lower opening of the filter bag is larger during unloading, making unloading faster and more convenient.

[0021] Furthermore, the filter bag is a cylindrical shape with openings at both the top and bottom, and the openings at the top and bottom are of the same diameter; this facilitates the one-piece molding of the filter bag. Compared with traditional filter bags made by sewing to achieve the shape of the upper cylinder and lower hopper, the filter bag in this solution can reduce seams, prevent solid particles from escaping from the seams, and make the separation effect better. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of a centrifugal separation device for sludge suspension according to the present invention;

[0024] Figure 2 This is a cross-sectional view of an embodiment of a sludge suspension centrifugal separation device according to the present invention;

[0025] Figure 3 This is a schematic diagram of the inner cylinder of an embodiment of a centrifugal separation device for sludge suspension according to the present invention;

[0026] Figure 4 This is an exploded view of the internal structure of the inner cylinder of an embodiment of a centrifugal separation device for sludge suspension according to the present invention;

[0027] Figure 5 This is a side view of the inner cylinder of an embodiment of a centrifugal separation device for sludge suspension according to the present invention;

[0028] Figure 6 for Figure 5 Sectional view at point AA;

[0029] Figure 7 for Figure 5 Sectional view at point BB;

[0030] Figure 8 This is a diagram showing the state of the rotating column moving downwards in an embodiment of the centrifugal separation device for sludge suspension according to the present invention;

[0031] Figure 9 This is a top view of the inner cylinder of an embodiment of a sludge suspension centrifugal separation device according to the present invention;

[0032] Figure 10 for Figure 9 Sectional view at CC;

[0033] Figure 11 This is a schematic diagram of the dividing plate of an embodiment of a centrifugal separation device for sludge suspension according to the present invention.

[0034] In the diagram: 100, frame; 200, outer cylinder; 210, drain pipe; 300, inner cylinder; 310, fixed cylinder; 320, outlet; 400, drive motor; 410, drive wheel; 420, rotating shaft; 500, rotating column; 600, dividing plate; 610, swing arm; 620, slip ring; 630, sliding column; 700, filter bag; 810, fabric inclined plate; 820, feed inlet; 910, sliding rod; 920, swing arm. Detailed Implementation

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] An embodiment of the sludge suspension centrifugal separation device of the present invention, such as... Figures 1 to 11As shown, it includes a frame 100, a rotating column 500, a dividing plate 600, a filter bag 700, and an adjustment device.

[0037] An outer cylinder 200 is fixed on a frame 100; the axis of the outer cylinder 200 is vertically oriented; an inner cylinder 300 is coaxially arranged inside the outer cylinder 200; the inner cylinder 300 is rotatably installed inside the outer cylinder 200; a drive assembly is provided between the inner cylinder 300 and the frame 100; the drive assembly drives the inner cylinder 300 to rotate. The drive assembly includes a drive motor 400 and a drive wheel 410; the drive motor 400 is fixed on the frame 100; a power wheel is fixed to the output shaft of the drive motor 400; the drive wheel 410 is coaxially and rotatably installed at the lower end of the outer cylinder 200; the drive wheel 410 and the power wheel are driven by a belt; a rotating shaft 420 is coaxially arranged at the axis of the drive wheel 410; the upper end of the rotating shaft 420 is fixedly connected to a rotating column 500, and the lower end is in sliding engagement with the drive wheel 410 via a spline. The rotating shaft 420 drives the rotating column 500 to rotate, and the rotating column 500 drives the inner cylinder 300 to rotate. The lower end of the side wall of the inner cylinder 300 is recessed to form a flange; an outlet 320 is provided on the flange; a drain pipe 210 is provided on the outer cylinder 200; the drain pipe 210 is located below the outlet 320; water enters between the inner cylinder 300 and the outer cylinder 200 through the outlet 320, and then exits through the drain pipe 210. The water centrifuged and spun out passes sequentially through the filter bag 700 and the dividing plate 600, then flows through the outlet 320 to the space between the inner cylinder 300 and the outer cylinder 200, and exits through the drain pipe 210 into the outer cylinder 200. A discharge port is provided at the lower end of the inner cylinder 300.

[0038] A rotating column 500 is coaxially disposed within the inner cylinder 300; the rotating column 500 and the inner cylinder 300 are in a sliding fit; a moving assembly is provided between the rotating column 500 and the frame 100; the moving assembly is used to drive the rotating column 500 to move up and down. A fixed cylinder 310 is coaxially fixed on the bottom wall of the inner cylinder 300; the lower end of the rotating column 500 is sleeved on the upper end of the fixed cylinder 310, and the two slide up and down through a spline. The moving assembly includes a cylinder; the cylinder is disposed below the rotating shaft 420; the cylinder is fixed on the frame 100; the piston rod of the cylinder is in a rotatable fit with the rotating shaft 420.

[0039] Multiple dividing plates 600 are provided, evenly distributed around the rotating column 500 and between the rotating column 500 and the inner cylinder 300. Each dividing plate 600 has a through hole. Multiple dividing plates 600 form a funnel-shaped drum with a cylindrical upper end and a smaller, downward-facing lower end. An adjustment gap is provided between adjacent dividing plates 600. A rocker arm 610 is provided between the dividing plate 600 and the inner cylinder 300. The rocker arm 610 is horizontally arranged radially along the inner cylinder 300, with one end hinged to the upper end of the inner cylinder 300 and the other end hinged to the upper end of the dividing plate 600. A torsion spring connects the rocker arm 610 and the inner cylinder 300. The lower end of the dividing plate 600 and the rotating column 500 slide radially along the inner cylinder 300 via a sliding assembly. The sliding assembly includes a slip ring 620 and a sliding column 630; the slip ring 620 is fixed to the lower end of the partition plate 600; multiple sliding columns 630 are provided and distributed circumferentially along the rotating column 500; the axis of the sliding column 630 is arranged radially along the rotating column 500; the sliding column 630 is fixed to the side wall of the rotating column 500; the sliding column 630 and the slip ring 620 are in sliding engagement. After filtration, the moving component drives the rotating column 500 downwards. The rotating column 500 pulls the lower end of the dividing plate 600 via the sliding column 630, causing the upper end of the dividing plate 600 to pull the swing rod 610 from a horizontal to a vertical position. This allows the dividing plate 600 to move downwards and away from the rotating column 500, aligning the projections of the lower end of the dividing plate 600 and the upper end of the filter bag 700 on the horizontal plane. This ensures that the projections of the upper and lower ends of the filter bag 700 overlap on the horizontal plane, allowing the filter bag 700 to flow vertically. This avoids the problem in existing technologies where the filter bag 700 cannot be stretched vertically when pulled down, thus preventing residual filter cake from detaching from the filter bag 700; and improves filter cake discharge efficiency. Furthermore, compared to existing technologies, the lower opening of the filter bag 700 is larger during unloading, making unloading faster and more convenient.

[0040] The filter bag 700 is located inside the rotating drum. The filter bag 700 is a cylindrical shape with openings at both the top and bottom, and the openings at the top and bottom have the same diameter, facilitating the one-piece molding of the filter bag 700. Compared to traditional filter bags 700 made by stitching to achieve the shape of an upper cylinder and lower hopper, the filter bag 700 in this design reduces seams, preventing solid particles from escaping through the seams and resulting in better separation. The upper end of the filter bag 700 is fixed to the upper end of the inner cylinder 300, and the lower end is fixedly connected to the lower end of the dividing plate 600. The filter bag 700 is attached to the dividing plate 600. A feeding device is provided inside the upper opening of the filter bag 700; the feeding device is used to evenly distribute the sludge suspension onto the filter bag 700. The feeding device includes a feeding slant plate 810 and a feed inlet 820. The axis of the feeding slant plate 810 is inclined relative to the axis of the inner cylinder 300. The feeding slant plate 810 is rotatably mounted on the upper end of the outer cylinder 200. A feeding motor is fixed on the upper end of the outer cylinder 200. The output shaft of the feeding motor is fixedly connected to the feeding slant plate 810. The feed inlet 820 is located above the feeding slant plate 810. The feeding motor drives the feeding slant plate 810 to rotate, and the sludge suspension is transported from the feed inlet 820 to the feeding slant plate 810, and then evenly spread onto the filter bag 700. A scraper is provided inside the filter bag 700. The scraper is located on the upper end of the outer cylinder 200 and moves up and down via an electric push rod. When the filter cake thickness on the filter bag 700 reaches the preset thickness, feeding is stopped, and the scraper moves up and down to scrape off the filter cake.

[0041] The adjusting device is located inside the filter bag 700 and within the adjusting gap. When the inner cylinder 300 rotates, the adjusting device squeezes the excess part of the filter bag 700 into the adjusting gap, ensuring that the filter bag 700 and the dividing plate 600 are fully fitted together. This prevents wrinkles from forming at the contact point between the filter bag 700 and the dividing plate 600, thus avoiding uneven distribution of the filter cake on the filter bag 700, which could cause vibration and reduce the equipment's lifespan. The adjusting device includes a slide rod 910 and a swing rod 920. The slide rod 910 extends vertically. The upper end of the slide rod 910 is slidably mounted on the upper end of the inner cylinder 300 along its radial direction. A spring connects the slide rod 910 and the inner cylinder 300. The slide rod 910 abuts against the inner wall of the filter bag 700. The swing rod 920 is located below the slide rod 910 and is vertically arranged, with its upper end hinged to the lower end of the slide rod 910. The swing rod 920 abuts against the inner wall of the filter bag 700. When the inner cylinder 300 rotates, under the action of centrifugal force, the slide bar 910 and the swing bar 920 move radially away from the rotating column 500 along the inner cylinder 300, squeezing the excess part of the filter bag 700 into the adjustment gap, so that the filter bag 700 and the dividing plate 600 fit together fully, avoiding wrinkles at the contact point between the filter bag 700 and the dividing plate 600, thereby avoiding uneven distribution of filter cake on the filter bag 700 and vibration, which would reduce the service life of the equipment. This also makes the size of the filter bag 700 and the size of the drum formed by the dividing plate 600 more compatible.

[0042] Based on the above embodiments, the operating principle and process of this invention are as follows: In use, the cloth-feeding motor drives the cloth-feeding slant plate 810 to rotate, and the sludge suspension is conveyed from the feed inlet 820 to the cloth-feeding slant plate 810, and then evenly sprinkled onto the filter bag 700 by the cloth-feeding slant plate 810. At the same time, the drive motor 400 starts and drives the rotating shaft 420 to rotate, the rotating shaft 420 drives the rotating column 500 to rotate, and the rotating column 500 drives the inner cylinder 300 to rotate. When the inner cylinder 300 rotates, under the action of centrifugal force, the slide bar 910 and the swing bar 920 move radially away from the rotating column 500 along the inner cylinder 300, squeezing the excess part of the filter bag 700 into the adjustment gap, so that the filter bag 700 and the dividing plate 600 fit together fully, avoiding wrinkles at the contact point between the filter bag 700 and the dividing plate 600, thereby avoiding uneven distribution of filter cake on the filter bag 700 and vibration, which would reduce the service life of the equipment. This also makes the size of the filter bag 700 and the size of the drum formed by the dividing plate 600 more compatible.

[0043] After filtration, the moving component drives the rotating column 500 downwards. The rotating column 500 pulls the lower end of the dividing plate 600 via the sliding column 630, causing the upper end of the dividing plate 600 to pull the swing rod 610 from a horizontal to a vertical position. This allows the dividing plate 600 to move downwards and away from the rotating column 500, aligning the projections of the lower end of the dividing plate 600 and the upper end of the filter bag 700 on the horizontal plane. This ensures that the projections of the upper and lower ends of the filter bag 700 overlap on the horizontal plane, allowing the filter bag 700 to flow vertically. This avoids the problem in existing technologies where the filter bag 700 cannot be stretched vertically when pulled down, thus preventing residual filter cake from detaching from the filter bag 700; and improves filter cake discharge efficiency. Furthermore, compared to existing technologies, the lower opening of the filter bag 700 is larger during unloading, making unloading faster and more convenient.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A centrifugal separation device for sludge suspension, characterized in that: Includes frame, rotating column, dividing plate, filter bag, and adjusting device; An outer cylinder is fixed on the frame; the outer cylinder's axis is vertically aligned; an inner cylinder is coaxially arranged inside the outer cylinder; the inner cylinder is rotatably installed inside the outer cylinder; a drive assembly is provided between the inner cylinder and the frame; the drive assembly drives the inner cylinder to rotate. The rotating column is coaxially mounted inside the inner cylinder; the rotating column and the inner cylinder slide vertically together; a moving assembly is provided between the rotating column and the frame; the moving assembly is used to drive the rotating column to move up and down. Multiple partition plates are provided, evenly distributed along the circumference of the rotating column between the rotating column and the inner cylinder; the partition plates have through holes; the multiple partition plates form a funnel-shaped rotating drum with a cylindrical upper end and a small end facing downwards; there is an adjustment gap between adjacent partition plates; a rocker arm is provided between the partition plates and the inner cylinder; the rocker arm is set horizontally along the radial direction of the inner cylinder, with one end hinged to the upper end of the inner cylinder and the other end hinged to the upper end of the partition plate; a torsion spring connects the rocker arm and the inner cylinder; the lower end of the partition plate and the rotating column slide together radially along the inner cylinder through a sliding assembly; The filter bag is placed inside the rotating drum; the filter bag is a cylindrical shape with openings at the top and bottom, and the openings at the top and bottom are of the same diameter; the upper end of the filter bag is fixed to the upper end of the inner cylinder, and the lower end is fixedly connected to the lower end of the dividing plate; the filter bag is attached to the dividing plate; a feeding device is provided inside the upper opening of the filter bag; the feeding device is used to evenly sprinkle the sludge suspension onto the filter bag. The adjusting device is located inside the filter bag and within the adjusting gap. When the inner cylinder rotates, the adjusting device squeezes the excess part of the filter bag into the adjusting gap, so that the filter bag and the dividing plate are fully fitted. The adjusting device includes a sliding rod and a swing rod. The sliding rod extends vertically. The upper end of the sliding rod is slidably installed on the upper end of the inner cylinder along the radial direction. A spring connects the sliding rod and the inner cylinder. The sliding rod abuts against the inner wall of the filter bag. The swing rod is located below the sliding rod and is vertically arranged, with its upper end hinged to the lower end of the sliding rod. The swing rod abuts against the inner wall of the filter bag.

2. The centrifugal separation device for sludge suspension according to claim 1, characterized in that: The sliding assembly includes a slip ring and a sliding column; the slip ring is fixed to the lower end of the partition plate; multiple sliding columns are provided and distributed along the circumference of the rotating column; the axis of the sliding column is set along the radial direction of the rotating column; the sliding column is fixed to the side wall of the rotating column; the sliding column and the slip ring are in sliding fit.

3. The centrifugal separation device for sludge suspension according to claim 1, characterized in that: A fixed cylinder is coaxially fixed on the bottom wall of the inner cylinder; the lower end of the rotating column is sleeved on the upper end of the fixed cylinder, and the two slide up and down through a spline.

4. The centrifugal separation device for sludge suspension according to claim 3, characterized in that: The drive assembly includes a drive motor and a drive wheel; the drive motor is fixed on the frame; the output shaft of the drive motor is fixed with a power wheel; the drive wheel is coaxially and rotatably mounted on the lower end of the outer cylinder; the drive wheel and the power wheel are driven by a belt; a rotating shaft is coaxially provided at the axis of the drive wheel; the upper end of the rotating shaft is fixedly connected to the rotating column, and the lower end is in sliding engagement with the drive wheel through a spline.

5. The centrifugal separation device for sludge suspension according to claim 4, characterized in that: The moving component includes a cylinder; the cylinder is located below the rotating shaft; the cylinder is fixed on the frame; the piston rod of the cylinder and the rotating shaft are rotatably engaged.

6. The centrifugal separation device for sludge suspension according to claim 1, characterized in that: The lower end of the inner cylinder sidewall is recessed to form a flange; an outlet is provided on the flange; a drain pipe is provided on the outer cylinder; the drain pipe is located below the outlet; water enters between the inner and outer cylinders through the outlet and then exits through the drain pipe.

7. The centrifugal separation device for sludge suspension according to claim 6, characterized in that: The inner cylinder has a discharge port at the lower end.

8. The centrifugal separation device for sludge suspension according to claim 1, characterized in that: The filter bag is equipped with a scraper; the scraper is located at the upper end of the outer cylinder and moves up and down via an electric push rod.

9. The centrifugal separation device for sludge suspension according to claim 1, characterized in that: The fabric feeding device includes a fabric feeding swashplate and a feed inlet; the axis of the fabric feeding swashplate is inclined relative to the axis of the inner cylinder; the fabric feeding swashplate is rotatably mounted on the upper end of the outer cylinder; a fabric feeding motor is fixedly mounted on the upper end of the outer cylinder; the output shaft of the fabric feeding motor is fixedly connected to the fabric feeding swashplate; the feed inlet is located above the fabric feeding swashplate.

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