Sludge extrusion dewatering device

Abstract

The invention relates to the technical field of gravity dewatering devices, in particular to a sludge extrusion dewatering device which comprises closed belt-shaped filter cloth for filtering sludge in a gravity dewatering area and a mounting frame for assembling the filter cloth, and a round roller for driving the filter cloth to perform transmission is assembled on the inner side of the mounting frame. A spreading plate used for reducing the thickness of spread sludge is assembled above the mounting frame, the upper surface area, used for conveying the sludge, of the filter cloth comprises a horizontal area and an inclined area, the spreading plate is located over the horizontal area, and the filter cloth is provided with two groups of material distributing assemblies in the conveying direction of the filter cloth; the anti-blocking assembly I and the anti-blocking assembly II are assembled, the anti-blocking assembly I performs real-time anti-blocking cleaning on the sludge conveying section on the surface of the filter cloth, and the anti-blocking assembly II performs secondary anti-blocking cleaning after the sludge is conveyed by the filter cloth, so that the filter cloth entering the sludge discharging opening is ensured to be in a non-blocking state; therefore, the dehydration efficiency in the horizontal area and the inclined area can be ensured at the same time, and the overall dehydration efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of gravity dewatering devices, and particularly provides a sludge squeezing dewatering device. Background Art

[0002] Sludge extrusion dewatering is a key link in the sludge treatment process. Its main purpose is to reduce the moisture content in the sludge by mechanical means, thereby creating conditions for subsequent disposal or resource utilization. After extrusion dehydration, the sludge can reduce its volume, reduce transportation and disposal costs, improve subsequent treatment efficiency, and also reduce the risk of pollutant migration. Common sludge extrusion dewatering technologies include plate and frame filter presses, belt filter presses and screw filter presses.

[0003] Belt filter press is the most commonly used equipment in actual production. Its dehydration process mainly includes gravity dehydration zone, wedge pre-pressing zone and high-pressure extrusion zone. Belt filter press can operate continuously with low energy consumption. However, when relying on gravity dehydration, the dehydration zone is in a horizontal state and the sludge is too thick, which will lead to the inability of mud and water to fully seep out. At the same time, in the process of mud and water infiltration, fine particles of sludge are easy to clog the pores of the filter belt, hinder drainage, and affect dehydration efficiency.

[0004] Therefore, there is an urgent need for a sludge squeezing and dewatering device that can accelerate the discharge of mud and water and improve the dewatering efficiency. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a sludge squeezing and dewatering device for solving the problems mentioned in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a sludge extrusion and dewatering device, comprising a closed belt-shaped filter cloth for filtering sludge in a gravity dewatering area and a mounting frame for assembling the filter cloth, the inner side of the mounting frame is equipped with a circular roller for driving the filter cloth for transmission, and the upper part of the mounting frame is equipped with a spreading plate for reducing the thickness of the paved sludge; the upper surface area of ​​the filter cloth for conveying sludge includes a horizontal area and an inclined area, the spreading plate is located directly above the horizontal area, and the filter cloth is respectively provided with two groups of feeding components along its conveying direction, the feeding component is used to separate the sludge to form multiple drainage paths, the feeding component includes multiple isolation frames resting on the surface of the filter cloth drainage path, the interior of the isolation frame is equipped with an anti-blocking component 1 for cleaning the filter cloth to prevent blockage, the inner side of the mounting frame is equipped with a support plate located below the feeding component and supporting the filter cloth, the surface of which is provided with multiple groups of water flow holes, and the isolation frames of the two feeding components are staggered; the surface of the filter cloth is bonded with an anti-blocking component 2 for cleaning the sludge that has been transferred, which cooperates with the anti-blocking component 1 to clean the blockage of the entire conveying section of the filter cloth.

[0007] Preferably, the anti-blocking component includes a high-pressure nozzle installed inside the isolation frame, the surface of the high-pressure nozzle is equipped with a connecting pipe, the top of the mounting frame is equipped with a water supply pipe for water supply, the interior of the water supply pipe is connected to the interior of the connecting pipe, and the two water supply pipes are installed on the surface of the mounting frame through a double U bracket.

[0008] Preferably, connecting pipe 1 is slidably installed with the isolation frame, and a connecting spring is movably sleeved on the surface of connecting pipe 1. The two ends of the connecting spring are respectively fixed on the surface of water supply pipe 1 and the isolation frame, and the lower end of the isolation frame is fitted with a rubber gasket for improving sealing.

[0009] Preferably, the isolation frame is hexagonal in shape, and the tip of the isolation frame faces the conveying direction of the filter cloth.

[0010] Preferably, the second anti-blocking component includes a cleaning tube with multiple water outlet holes on its surface, a high-pressure nozzle is installed inside the cleaning tube corresponding to each water outlet hole, a water supply pipe is installed through the interior of the cleaning tube, and a connecting pipe is installed between the high-pressure nozzle and the water supply pipe.

[0011] Preferably, the lower surface of the filter cloth is concave, the cleaning tube is located inside the concave on the lower surface of the filter cloth, and the surface of the mounting frame is equipped with two adjusting rollers, which are respectively located on both sides of the cleaning tube and fit the outer surface of the filter cloth.

[0012] Preferably, the multiple water outlet holes are equidistantly distributed in a circular pattern around the cleaning pipe axis and are equidistantly arranged linearly along the axis of the cleaning pipe. A guide plate is installed on the inner side of the mounting frame, and the guide plate is located on the inner side of the filter cloth.

[0013] Preferably, the surface of the water supply pipe 2 is equipped with a plurality of support rings, and the plurality of support rings are equidistantly arranged inside the cleaning pipe.

[0014] Preferably, the surfaces of the adjacent high-pressure nozzles 2 in the circumferential direction are equipped with partition plates, and the partition plates are fixedly mounted on the surface of the water supply pipe 2.

[0015] Preferably, the thickness of the surface of the water supply pipe 2 gradually decreases from the middle to the two ends, and the internal diameter remains unchanged.

[0016] 1. The above technical solution has the following advantages or beneficial effects: The present invention provides a sludge extrusion dewatering device, which is equipped with two staggered anti-blocking components, cleans the surface of the filter cloth through a pair of high-pressure nozzles, and uses an isolation frame to protect the high-pressure nozzles. At the same time, it realizes real-time, large-area anti-blocking cleaning of the filter cloth, ensures the speed at which mud and water fall and are discharged, and thus greatly improves the efficiency of gravity dewatering.

[0017] 2. The above technical solution has the following advantages or beneficial effects: The present invention provides a sludge extrusion dewatering device, which is assembled with an anti-blocking component 1 and an anti-blocking component 2. The anti-blocking component 1 performs real-time anti-blocking cleaning on the sludge conveying section on the filter cloth surface, and the anti-blocking component 2 performs secondary anti-blocking cleaning after the filter cloth conveys the sludge, so as to ensure that the filter cloth entering the sludge discharge port is in a non-blocked state, thereby being able to ensure the dewatering efficiency in the horizontal area and the inclined area at the same time, without the need to stop the machine for anti-blocking cleaning, and further greatly improving the overall dewatering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention and its features, configurations and advantages will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a sludge extrusion dewatering device provided by the present invention.

[0020] Figure 2 It is a cross-sectional structural diagram of the guide plate position.

[0021] Figure 3 It is a structural diagram of the anti-blocking component 2 and the filter cloth in the installed state.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the anti-blocking component two.

[0023] Figure 5 yes Figure 4 Front view of .

[0024] Figure 6 It is a three-dimensional structural diagram of anti-blocking component one.

[0025] Figure 7 It is a partial cross-sectional view of one position of the anti-blocking component.

[0026] Figure 8 yes Figure 7 A partial enlarged view of point A.

[0027] In the figure: 1. filter cloth; 2. mounting frame; 3. round roller; 4. laying plate; 5. material dividing assembly; 51. isolation frame; 52. anti-blocking assembly 1; 521. high-pressure nozzle 1; 522. connecting pipe 1; 523. water supply pipe 1; 524. double U bracket; 53. water flow hole; 54. support plate; 6. anti-blocking assembly 2; 61. water outlet; 62. cleaning pipe; 63. high-pressure nozzle 2; 64. water supply pipe 2; 65. connecting pipe 2; 7. connecting spring; 8. rubber gasket; 9. adjusting roller; 10. guide plate; 11. support ring; 12. partition plate. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Figure 1 Disclosed is a dewatering structure for a gravity dewatering zone in a sludge squeezing and dewatering device, comprising a filter cloth 1 for separating mud and water from sludge. The filter cloth 1 is a closed belt-shaped steel wire mesh reinforced filter cloth. When mud and water are located on the surface of the filter cloth 1, gravity causes the mud and water to flow and separate from the mud. The filter cloth 1 is assembled on the surface of a mounting frame 2. The mounting frame 2 is placed on the ground and can be fixed by installing expansion bolts. The surface of the mounting frame 2 is rotatably equipped with a plurality of round rollers 3 for transmitting the filter cloth 1. At this time, the filter cloth 1 is stretched open and has a right-angled trapezoidal shape on its side. The upper surface of the filter cloth 1 is divided into a horizontal area and an inclined area. The inclination angle of the inclined area is 2. The angle is set between 10°-15°, which can not only ensure the rapid falling and discharge of muddy water, but also prevent the sludge from flowing with the muddy water. The surface of the mounting frame 2 is fixed with a paving plate 4 by bolts. The paving plate 4 is between 15-25 cm away from the upper surface of the filter cloth 1. The paving plate 4 flattens the sludge on the filter cloth 1 to reduce the thickness of the sludge, ensuring that the muddy water can flow evenly and quickly to the bottom layer and fall. It should be noted that the paving plate 4 is close to the sludge discharge port, so as to ensure that when the sludge just falls on the surface of the filter cloth 1, it can be quickly flattened and reach a suitable thickness.

[0031] like Figure 1-Figure 2 and Figure 6-Figure 8 As shown, the surface of the mounting frame 2 is equipped with two groups of dividing components 5, which are respectively located at the end of the horizontal area and the front end of the inclined area. The dividing component 5 divides the entire surface of the sludge into multiple drainage paths. Due to the height difference, the mud and water will fall into the position of the drainage path and flow out. The dividing component 5 includes multiple isolation frames 51. In this embodiment, the number of isolation frames 51 of the two dividing components 5 is different, one group of isolation frames 51 has six, and the other group of isolation frames 51 has seven. The lower surface shape of the isolation frame 51 is hexagonal, and the tip of the isolation frame 51 faces the conveying direction of the filter cloth 1. When the sludge moves to the position of the isolation frame 51, the isolation frame 51 will divert the sludge, thereby forming a drainage path at the position of the isolation frame 51. The two groups of isolation frames 51 need to be distributed alternately.

[0032] An anti-blocking component 52 is installed inside the isolation frame 51 to clean the drainage path formed by the isolation frame 51 at this position to prevent the filter cloth 1 from being blocked and improve the dehydration efficiency of the drainage path. The anti-blocking component 52 includes a high-pressure nozzle 521 slidably installed inside the isolation frame 51. The nozzle surface of the high-pressure nozzle 521 needs to fit the surface of the filter cloth 1 to prevent the flushing water mist from flowing to the surface of the filter cloth 1 and mixing with the mud again. A connecting pipe 522 is fixedly welded on the surface of the high-pressure nozzle 521. At the same time, when installing A water supply pipe 523 is fixedly installed on the top of the frame 2. The water supply pipe 523 is connected to the interior of each connecting pipe 522, that is, water is supplied to the interior of the water supply pipe 523, and muddy water enters the interior of the high-pressure nozzle 521 through the connecting pipe 522, thereby cleaning the surface of the filter cloth 1 passing through the isolation frame 51. After cleaning, the muddy water falls into the position of the sewer path again and can flow out more quickly. The two water supply pipes 523 are fixed to the surface of the mounting frame 2 by the cooperation of the double U bracket 524 and bolts.

[0033] In order to prevent the sludge from affecting the normal cleaning of the high-pressure nozzle 521, it is necessary to use the isolation frame 51 to completely cover the high-pressure nozzle 521 for protection. Therefore, the surface of the connecting pipe 522 is movably connected with a connecting spring 7, and the two ends of the connecting spring 7 are respectively fixedly connected to the surface of the water supply pipe 523 and the isolation frame 51. When the high-pressure nozzle 521 is attached to the surface of the filter cloth 1, the connecting spring 7 is in a compressed state, and the isolation frame 51 can be tightly attached to the surface of the filter cloth 1. At this time, a support plate 54 is fixedly installed on the surface of the mounting frame 2. The support plate 54 is in the same vertical position as the isolation frame 51, providing support for the filter cloth 1. At the same time, in order to ensure that the muddy water can flow out normally, a plurality of water holes 53 are opened on the surface of the support plate 54 to ensure that the discharged muddy water can flow out normally. It should be noted that since the filter cloth 1 is in transmission, in order to prevent the isolation frame 51 from causing greater friction damage to the surface of the filter cloth 1, a rubber gasket 8 with a matching shape is bonded to the lower surface of the isolation frame 51. The rubber gasket 8 is adhered to the surface of the filter cloth 1, and the sealing of the isolation frame 51 can also be enhanced.

[0034] Since the isolation frames 51 of the two groups of feeding components 5 are alternately distributed, the surface of the filter cloth 1 can be cleaned by the high-pressure nozzle 521 inside the isolation frame 51 during the movement of the filter cloth 1. In the process of sludge transmission, the dehydration efficiency can be greatly improved. However, since the transmission of the filter cloth 1 is a cyclic process, when the sludge in the gravity dehydration zone is separated from the surface of the filter cloth 1, the filter cloth 1 is transmitted to the sludge discharge port position, and dehydration is still required in the horizontal area. Therefore, in order to ensure the dehydration efficiency of this position, an anti-blocking component 2 6 is assembled on the lower surface of the filter cloth 1 to cooperate with the anti-blocking component 1 52 to achieve anti-blocking of the entire filter cloth 1 conveying section.

[0035] like Figure 1-Figure 2 and Figure 3-Figure 5 As shown, the anti-blocking component 2 6 includes a cleaning pipe 62, and the lower moving path of the filter cloth 1 is set to be concave. The cleaning pipe 62 is located inside the concave position and fits the surface of the filter cloth 1. The cleaning pipe 62 is rotatably assembled on the inner side of the mounting frame 2, and the inner side of the mounting frame 2 is also rotatably assembled with two adjusting rollers 9. The two adjusting rollers 9 are respectively located on both sides of the cleaning pipe 62 and fit on the outer surface of the filter cloth 1 to guide the filter cloth 1. It should be noted that the cleaning pipe 62 also rotates simultaneously when in use, so as to reduce the friction between the cleaning pipe 62 and the surface of the filter cloth 1 and prevent large wear on the surface of the filter cloth 1.

[0036] The surface of the cleaning pipe 62 is provided with a plurality of water outlet holes 61. In this embodiment, the water outlet holes 61 are equidistantly distributed in four groups in a circular manner in the circumferential direction with the axis of the cleaning pipe 62 as the center, and are equidistantly distributed linearly along the axis of the cleaning pipe 62. A water supply pipe 64 is installed through the interior of the cleaning pipe 62. A high-pressure nozzle 63 is correspondingly provided at the position of each water outlet hole 61. A connecting pipe 65 is fixedly installed between each high-pressure nozzle 63 and the water supply pipe 64. The flushing water enters the interior of the water supply pipe 64 and passes through the water supply pipe 64. The water enters the interior of the high-pressure nozzle 2 63 through the connecting pipe 2 65. Since the filter cloth 1 is attached to the surface of the cleaning pipe 62 and the gap on the outside of the filter cloth 1 is opened when it is bent, the high-pressure flushing water impacts the surface of the filter cloth 1, which can ensure that the mud and sand are cleaned more thoroughly, thereby improving the efficiency of sludge gravity dehydration. In order to prevent the muddy water above the filter cloth 1 from flowing to the position below the filter cloth 1, an inverted V-shaped guide plate 10 is fixedly installed on the surface of the mounting frame 2 to prevent the water flow from causing secondary blockage to the filter cloth 1 and avoiding affecting the dehydration efficiency.

[0037] In this embodiment, when the cleaning pipe 62 rotates, the water discharge hole at the top cannot clean the filter cloth 1. However, since the cleaning pipe 62 only performs anti-blocking cleaning on the surface of the filter cloth 1 at certain intervals, and the high-pressure nozzle 2 63 does not spray a large amount of water during cleaning, the flushing water and the muddy water flushed down are recovered into the collection tank and reused after filtering and other treatments, which can avoid the waste of water resources.

[0038] In order to ensure that the installation of the high-pressure nozzle 2 63 can be more stable, a plurality of support rings 11 are fixedly installed on the surface of the water supply pipe 2 64. The support ring 11 is fixedly installed inside the cleaning pipe 62. At the same time, a partition plate 12 is fixedly installed on the surface of each high-pressure nozzle 2 63 in the circumferential direction to isolate the part of the sprayed flushing water that falls back into the inside of the cleaning pipe 62. The internal diameter of the water supply pipe 2 64 remains unchanged, and the thickness of the surface gradually decreases from the middle to the two ends, thereby diverting the return flushing water to avoid falling on the surface of the filter cloth 1 and causing secondary blockage.

[0039] In the present invention, two anti-blocking components 52 arranged at the end of the horizontal area and the front end of the inclined area of ​​the upper surface of the filter cloth 1 are used to perform two-level alternating anti-blocking cleaning on the upper surface of the filter cloth 1, and anti-blocking component 2 6 arranged on the lower surface of the filter cloth 1 is used to perform third-level anti-blocking cleaning on the lower surface of the filter cloth 1. With the help of three-level anti-blocking cleaning, the anti-blocking cleaning function of the entire conveying section of the filter cloth 1 is realized, and there is no need to stop the machine for anti-blocking cleaning, which greatly improves the sludge dewatering efficiency; although the present invention adds two anti-blocking components 52, anti-blocking component 2 6 and corresponding high-pressure water pumps and other structures compared with the prior art, which increases the equipment cost, the technical solution of the present invention does not require shutdown for anti-blocking cleaning, and can achieve regular and intermittent anti-blocking cleaning operations on the filter cloth 1 during the sludge dewatering process, which greatly improves the speed and efficiency of sludge dewatering, thereby greatly providing economic benefits to the sludge dewatering treatment plant. From the perspective of long-term economic benefits, the equipment cost of the present invention compared with the prior art is completely negligible.

[0040] It should be noted that the water supply pipe 1 523 and the water supply pipe 2 64 are both connected through the water outlet of the high-pressure water pump (not shown in the figure), and the water inlet of the high-pressure water pump is connected to the collecting water tank through a water pipe (not shown in the figure). The collecting water tank is used to collect the muddy water left after the sludge is filtered out of the filter cloth 1 (not shown in the figure). The flushing water extracted by the high-pressure water pump is muddy water. The high-pressure water pump extracts the muddy water left after the sludge is filtered out to perform anti-blocking flushing on the filter cloth 1 at regular intervals without the need for additional connection to external water. Since the filter cloth 1 is a steel mesh reinforced filter cloth with relatively high strength, after many tests by technicians in this field, the water spraying pressure of the high-pressure water pump is adjusted to an appropriate value and the interval time of the regular anti-blocking flushing is adjusted to a reasonable time to ensure that the water spraying pressure of the high-pressure water pump through the high-pressure nozzle 1 521 and the high-pressure nozzle 2 63 will not cause damage to the filter cloth 1.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A sludge extrusion dewatering device, characterized by: It includes a closed belt-shaped filter cloth for filtering sludge in the gravity dehydration area and an assembled mounting frame, the inner side of the mounting frame is equipped with a circular roller for driving the filter cloth for transmission, and the upper part of the mounting frame is equipped with a paving plate for reducing the thickness of the sludge; The upper surface area of ​​the filter cloth for conveying sludge includes a horizontal area and an inclined area, the paving plate is located directly above the horizontal area, and the filter cloth is provided with two groups of feed assemblies along its conveying direction, the feed assemblies are used to separate the sludge to form multiple drainage paths, the feed assemblies include multiple isolation frames resting on the surface of the filter cloth drainage path, the interior of the isolation frames is equipped with an anti-blocking assembly for cleaning the filter cloth to prevent clogging, the inner side of the mounting frame is equipped with a support plate located below the feed assemblies and supporting the filter cloth, the surface of which is provided with multiple groups of water flow holes, and the isolation frames of the two feed assemblies are staggered; The surface of the filter cloth is attached with an anti-blocking component 2 for cleaning the sludge that has been transported, and cooperates with the anti-blocking component 1 to clean the blockage of the entire conveying section of the filter cloth.

2. The sludge extrusion dewatering device according to claim 1, characterized in that: The anti-blocking component includes a high-pressure nozzle installed inside the isolation frame, the surface of the high-pressure nozzle is equipped with a connecting pipe, the top of the mounting frame is equipped with a water supply pipe for water delivery, the interior of the water supply pipe is connected to the interior of the connecting pipe, and the two water supply pipes are installed on the surface of the mounting frame through a double U bracket.

3. The sludge extrusion dewatering device according to claim 2, characterized in that: The connecting pipe 1 is slidably installed with the isolation frame, and a connecting spring is movably sleeved on the surface of the connecting pipe 1. The two ends of the connecting spring are respectively fixed on the surface of the water supply pipe 1 and the isolation frame. The lower end of the isolation frame is fitted with a rubber gasket for improving sealing.

4. The sludge extrusion dewatering device according to claim 1, characterized in that: The isolation frame is hexagonal in shape, and the tip of the isolation frame faces the conveying direction of the filter cloth.

5. The sludge extrusion dewatering device according to claim 1, characterized in that: The second anti-blocking component includes a cleaning tube with multiple water outlet holes on its surface. The interior of the cleaning tube is equipped with a high-pressure nozzle corresponding to each water outlet hole. The interior of the cleaning tube is penetrated by a water supply pipe. A connecting pipe is installed between the high-pressure nozzle and the water supply pipe.

6. The sludge extrusion dewatering device according to claim 5, characterized in that: The lower surface of the filter cloth is provided with a depression, the cleaning pipe is located inside the depression of the lower surface of the filter cloth, and the surface of the mounting frame is equipped with two adjusting rollers, which are respectively located on both sides of the cleaning pipe and fit the outer surface of the filter cloth.

7. The sludge extrusion dewatering device according to claim 5, characterized in that: The multiple water outlet holes are equidistantly distributed in a circular pattern around the cleaning pipe axis and are equidistantly arranged linearly along the axis of the cleaning pipe. A guide plate is installed on the inner side of the mounting frame, and the guide plate is located on the inner side of the filter cloth.

8. The sludge squeezing and dewatering device according to claim 5, characterized in that: The surface of the water supply pipe 2 is equipped with a plurality of support rings, and the plurality of support rings are equidistantly arranged inside the cleaning pipe.

9. The sludge extrusion dewatering device according to claim 5, characterized in that: The surfaces of the adjacent high-pressure nozzles 2 in the circumferential direction are equipped with partition plates, and the partition plates are fixedly installed on the surface of the water supply pipe 2.

10. The sludge squeezing and dewatering device according to claim 5, characterized in that: The thickness of the surface of the water supply pipe 2 gradually decreases from the middle to the two ends, and the internal diameter remains unchanged.

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