Dredging auxiliary equipment and method for municipal water supply and drainage

Abstract

The invention relates to desilting auxiliary equipment and method for municipal water supply and drainage, and belongs to the technical field of pipeline desilting equipment.The desilting auxiliary equipment comprises a barrel body and a spiral drainage assembly arranged on the barrel body, the spiral drainage assembly comprises a spiral shaft arranged in the barrel body in a penetrating mode and coaxial with the center line of the spiral shaft, and a rotary power element is fixedly arranged on the barrel body; the opening part of the barrel body is arranged at the end part of a water supply and drainage pipeline in a sleeving manner, so that the spiral shaft can extend into the drainage pipeline, the spiral shaft is driven by the rotary power element to rotate, and sludge which is extruded and blocked at the opening part of the water supply and drainage pipeline is guided and conveyed into the barrel body; the barrel body is communicated with external negative pressure suction equipment through the turning guide pipe, suction force borne by a mixture of sludge and water in the water supply and drainage pipeline is reduced, blockage during dredging of the water supply and drainage pipeline is avoided, and the external negative pressure suction equipment does not need to be separated from the water supply and drainage pipeline for dredging; and the convenience of cleaning the sludge on the water supply and drainage pipeline is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of pipeline dredging equipment, specifically relating to a dredging auxiliary device and method for municipal water supply and drainage. Background Technology

[0002] Municipal water supply and drainage pipelines are a crucial component of urban infrastructure, responsible for the transportation and discharge of urban water resources. Water supply pipelines primarily deliver water sources (such as tap water and groundwater) to households, industries, and public facilities, ensuring a stable and safe water supply. Drainage pipelines are mainly responsible for discharging urban sewage, rainwater, and other wastewater into external water bodies or sewage treatment plants, thus protecting the sanitation and ecological balance of the urban environment. Municipal water supply and drainage systems not only play a vital role in daily life but also directly impact urban sustainable development and residents' quality of life. Effective construction and maintenance of water supply and drainage pipelines ensure the rational use of water resources and the timely treatment of wastewater, preventing water pollution and promoting green and healthy urban development.

[0003] During long-term operation, municipal water supply and drainage pipelines often accumulate silt on their inner walls. Silt formation is the result of multiple factors. For example, the water source may contain suspended particles, silt, minerals, and humus. During water transport, areas with lower or unstable flow rates (such as bends and gentle slopes) allow the flow to slow down, leading to the gradual deposition of sediment and the formation of silt. Additionally, as pipeline materials age, corrode, or scale, resulting in an uneven surface that allows silt to adhere more easily to the inner walls, leading to even more severe sediment buildup.

[0004] Dredging is a crucial measure to ensure the normal operation of municipal water supply and drainage pipelines. Current technologies primarily utilize various mechanical equipment for sludge removal, such as high-pressure water jet dredging and vacuum equipment, which effectively improves dredging efficiency. This is particularly suitable for long pipelines and large amounts of sludge. High-pressure water jets are used to flush the sludge from one end of the pipeline, and then vacuum equipment is used to remove the sludge and water mixture from the other end. However, because the flushed sludge still contains many clumps, and the high-pressure water jets and suction force cause these clumps to move rapidly along the pipeline, the end of the pipeline near the vacuum equipment is prone to blockage. As the vacuum equipment continues to pump, the blockage worsens, necessitating the separation of the vacuum equipment from the pipeline for further unblocking. Furthermore, during the unblocking process, the sludge and water mixture flows out of the pipeline and falls to the ground, requiring cleaning. This makes sludge removal from water supply and drainage pipelines extremely inconvenient with existing equipment. Summary of the Invention

[0005] In view of this, the present invention provides an auxiliary device for dredging municipal water supply and drainage to overcome the shortcomings of the prior art. The present invention can avoid blockage during dredging of water supply and drainage pipes and prevent the mixture of sludge and water from falling to the ground and requiring cleaning, thus greatly improving the convenience of sludge removal from water supply and drainage pipes.

[0006] The technical solution of this invention is: a municipal water supply and drainage dredging auxiliary device, including a bucket body and a spiral diversion assembly disposed on the bucket body. The opening of the bucket body is fitted onto the end of the water supply and drainage pipe and is detachably fixedly connected to it. The bucket body and the center line of the water supply and drainage pipe are coaxial. The spiral diversion assembly includes a spiral shaft passing through the bucket body and coaxial with its center line. One end of the spiral shaft is rotatably connected to the bucket body, and the other end extends out of the bucket body and into the water supply and drainage pipe. A rotational power element is fixed on the bucket body, and the output shaft of the rotational power element is connected to the spiral shaft to drive the spiral shaft to rotate, so as to guide the sludge that is squeezed and blocked at the opening of the water supply and drainage pipe to transport it into the bucket body. A deflecting guide pipe is vertically fixed on the lower side of the bucket body. One end of the deflecting guide pipe is connected to the inside of the bucket body, and the other end is connected to an external negative pressure suction device through a pipe, so as to attract the mixture of sludge and water in the water supply and drainage pipe and the bucket body, so that they move into the bucket body and the deflecting guide pipe respectively, and reduce the suction force on the mixture of sludge and water in the water supply and drainage pipe.

[0007] Preferably, a hexagonal hole connecting pipe is fixedly provided on the inner bottom of the barrel body. The hexagonal hole connecting pipe is coaxial with the center line of the barrel body. One end of the spiral shaft extends into the hexagonal hole connecting pipe and is slidably connected to it along the center line of the hexagonal hole connecting pipe. A first cylinder is fixedly provided in the hexagonal hole connecting pipe, and the piston rod of the first cylinder is connected to the spiral shaft.

[0008] Preferably, brush plates are provided on the upper side and the left and right sides of the spiral shaft, and are parallel to the center line of the spiral shaft. One end of the brush plate is fixedly connected to the barrel body, and the other end is fixed with flexible brush teeth at equal intervals along the center line of the spiral shaft. The spiral ribs on the spiral shaft pass through the gaps between adjacent flexible brush teeth.

[0009] Preferably, the yield strength of the flexible brush teeth gradually decreases from one end near the brush plate to the other end.

[0010] Preferably, the spiral shaft is hollow inside and connected to an external water source through a pipe. Multiple through holes are equally spaced around the spiral shaft along its center line. The through holes are arranged radially along the spiral shaft and communicate with its interior. The through holes are located on the side of the spiral shaft away from the bottom of the barrel.

[0011] Preferably, a plurality of second cylinders are fixedly mounted radially at equal intervals on the outer side of the barrel and are located on the side of the barrel near its opening. The piston rod of the second cylinder extends into the interior of the barrel and is slidably connected thereto. A support block is fixedly mounted at the end of the piston rod of the second cylinder.

[0012] Preferably, the barrel body has an annular air bladder inside, which is coaxial with the center line and located on the side of the barrel body closer to the second cylinder. The outer side of the annular air bladder is fixedly connected to the inner wall of the barrel body. The annular air bladder expands and contracts radially along the barrel body. The annular air bladder is connected to an external pressure gas transmission device through a pipe.

[0013] Preferably, a second cylinder is arranged around the outer sides of both ends of the annular airbag.

[0014] A method for using a municipal water supply and drainage dredging auxiliary device includes the following steps: Fit the opening of the bucket into one end of the water supply and drainage pipe to be cleaned, and spray water into the other end of the water supply and drainage pipe to flush away the silt. When a mixture of sludge and water flows out of the turning guide pipe, connect the turning guide pipe to an external negative pressure suction device through a pipeline. Simultaneously, the rotating power element and external negative pressure suction equipment are activated. The suction force of the external negative pressure suction equipment drives the water supply and drainage pipes and the mixture of sludge and water in the tank to move into the tank and the turning guide pipe, respectively. When the mixture of sludge and water moves to the side of the water supply and drainage pipe close to the tank, the spiral shaft guides the mixture of sludge and water to transport it into the tank. The mixture of sludge and water in the tank is then pumped away through the turning guide pipe and the pipeline.

[0015] Compared with existing technologies, the present invention provides an auxiliary device and method for dredging municipal water supply and drainage. This device utilizes a bucket body in conjunction with a spiral shaft, a rotating power element, and a deflecting guide pipe of a spiral diversion assembly. The opening of the bucket body is fitted over the end of the water supply and drainage pipe, allowing the spiral shaft to extend into the pipe. The rotating power element drives the spiral shaft to rotate, guiding the sludge that is blocking the opening of the water supply and drainage pipe into the bucket body. Furthermore, the deflecting guide pipe connects the bucket body to an external negative pressure suction device, reducing the suction force on the mixture of sludge and water in the water supply and drainage pipe. This prevents blockages during dredging and eliminates the need to separate the external negative pressure suction device from the water supply and drainage pipe during the dredging process, avoiding the sludge and water mixture falling to the ground and requiring cleaning. This significantly improves the convenience of sludge removal from water supply and drainage pipes. Attached Figure Description

[0016] Figure 1 This is a front view of the dredging auxiliary equipment of the present invention; Figure 2 This is a left view of the dredging auxiliary equipment of the present invention; Figure 3 This is a right view of the dredging auxiliary equipment of the present invention; Figure 4This is a schematic diagram of the internal structure of the connection between the dredging auxiliary equipment of the present invention and the water supply and drainage pipeline; Figure 5 This is the present invention. Figure 1 AA section view in the image. Detailed Implementation

[0017] This invention provides an auxiliary device and method for dredging municipal water supply and drainage, which will be described below in conjunction with... Figures 1 to 5 The present invention is illustrated by the structural diagram shown below.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Reference Figure 1 , Figure 1 This is a front view of the dredging auxiliary equipment for municipal water supply and drainage. The equipment includes a bucket body 1 and a spiral diversion assembly mounted on the bucket body 1. The opening of the bucket body 1 is fitted onto the end of a water supply and drainage pipe 2 and is detachably and fixedly connected thereto. The bucket body 1 and the centerline of the water supply and drainage pipe 2 are coaxial. The spiral diversion assembly includes a spiral shaft 3 that passes through the bucket body 1 and is coaxial with its centerline. One end of the spiral shaft 3 is rotatably connected to the bucket body 1, and the other end extends out of the bucket body 1 into the water supply and drainage pipe 2. A rotational power element 4 is fixedly mounted on the bucket body 1. The output shaft of component 4 is connected to the screw shaft 3 to drive the screw shaft 3 to rotate, so as to guide the sludge that is squeezed and blocked at the opening of the water supply and drainage pipe 2 to transport it into the tank 1. The turning guide pipe 5 is vertically fixed on the lower side of the tank 1. One end of the turning guide pipe 5 is connected to the inside of the tank 1, and the other end is connected to the external negative pressure suction device through the pipe, so as to attract the mixture of sludge and water in the water supply and drainage pipe 2 and the tank 1 to move them into the tank 1 and the turning guide pipe 5 respectively, and reduce the suction force on the mixture of sludge and water in the water supply and drainage pipe 2.

[0020] In this embodiment, the municipal water supply and drainage dredging auxiliary equipment connects the end of the water supply and drainage pipe from which the sludge and water mixture is discharged to an external negative pressure suction device during dredging. When the high-pressure water flow washes the sludge off the inner wall of the water supply and drainage pipe, the thrust of the high-pressure water flow and the suction of the external negative pressure suction device cause the sludge and water mixture to move along the water supply and drainage pipe towards the tank 1. When a large number of clumps of sludge move and concentrate on the side of the drainage pipe near the tank 1, the sludge clumps squeeze against each other and the friction with the inner wall of the water supply and drainage pipe increases, causing the sludge to clog the water supply and drainage pipe. This makes it difficult for the external negative pressure suction device to remove the sludge and water mixture. (Refer to...) Figure 4 , Figure 4 This diagram illustrates the internal structure of the dredging auxiliary equipment connected to the water supply and drainage pipeline. The barrel 1 allows a portion of the spiral shaft 3 to extend into the side of the water supply and drainage pipeline 2 prone to blockage. A rotating power element 4 drives the spiral shaft 3 to rotate, guiding the blocked sludge to move continuously into the barrel 1, clearing the blockage. Furthermore, a deflecting guide pipe 5 deflects the suction force of the external negative pressure suction device on the sludge-water mixture by 90°, reducing the suction force on the mixture in the water supply and drainage pipeline 2 and decreasing its movement speed. This prevents large amounts of sludge from accumulating and causing blockages, thus preventing blockages during dredging. Moreover, the external negative pressure suction device does not need to be separated from the water supply and drainage pipeline during dredging, avoiding the sludge-water mixture falling to the ground and requiring cleaning, greatly improving the convenience of sludge removal from water supply and drainage pipelines.

[0021] Reference Figure 3 , Figure 3 The image shows a right view of the dredging auxiliary equipment of this embodiment. As a further optimization, a hexagonal hole connecting pipe 6 is fixedly provided on the inner bottom of the barrel 1 in this embodiment. The hexagonal hole connecting pipe 6 is coaxial with the center line of the barrel 1. One end of the spiral shaft 3 extends into the hexagonal hole connecting pipe 6 and is slidably connected to it along the center line of the hexagonal hole connecting pipe 6. A first cylinder 7 is fixedly provided in the hexagonal hole connecting pipe 6, and the piston rod of the first cylinder 7 is connected to the spiral shaft 3.

[0022] In this embodiment, the hexagonal connecting pipe 6 enables the spiral shaft 3 to move along its centerline. During the dredging process, as the spiral shaft 3 rotates to guide the blocked sludge into the bucket 1, the first cylinder 7 drives the spiral shaft 3 to move back and forth along its centerline. This not only allows the spiral shaft 3 to collide with and break up the clumps of sludge in front of it, further reducing the probability of sludge blockage, but also prevents the sludge from moving in a regular spiral motion as it is guided into the bucket 1. This causes the sludge to break up and disperse during the movement, further improving the dredging effect.

[0023] Specifically, in this embodiment, the outer diameter of the spiral shaft 3 on the side away from the hexagonal hole connecting pipe 6 gradually decreases from the side closer to the hexagonal hole connecting pipe 6 to the other side, thereby enhancing the breaking and dispersing effect through the collision of the tip with the clump of silt. (Refer to...) Figure 5 , Figure 5 The AA cross-sectional view of the dredging auxiliary equipment of this implementation shows that the rotating power element 4 drives the hexagonal hole connecting pipe 6 to rotate through the six belt transmission mechanism 41, thereby realizing that while the spiral shaft 3 rotates, it can also move back and forth along its center line.

[0024] In the above embodiment, the spiral shaft 3 is connected to the barrel 1 through the hexagonal hole connecting pipe 6. In order to improve the stability of the spiral shaft 3's movement, the hexagonal hole connecting pipe 6 is horizontally inserted into the bottom inner side of the barrel 1, and a certain length of the spiral shaft 3 is inserted into the hexagonal hole connecting pipe 6, thereby reducing the shaking amplitude of the tip of the spiral shaft 3 when it rotates, and ensuring the dredging effect on the blockage sludge.

[0025] Reference Figure 2 , Figure 2 The left view of the dredging auxiliary equipment of this embodiment is shown. As a further optimization, in this embodiment, brush plates 8 are respectively provided on the upper side and the left and right sides of the spiral shaft 3, and are parallel to the center line of the spiral shaft 3. One end of the brush plate 8 is fixedly connected to the barrel 1, and the other end is fixedly provided with flexible brush teeth 9 at equal intervals along the center line of the spiral shaft 3. The spiral ribs on the spiral shaft 3 pass through the adjacent flexible brush teeth 9.

[0026] In this embodiment, brush plates 8 are respectively arranged on the upper side and the left and right sides of the spiral shaft 3. The flexible brush teeth 9 on the brush plates 8 scrape off the sludge on the spiral shaft 3 when the spiral shaft 3 rotates. Since the spiral ribs on the spiral shaft 3 pass between adjacent flexible brush teeth 9, when the spiral shaft 3 moves back and forth along its center line, the flexible brush teeth 9 can also scrape off the sludge on both sides of the spiral ribs. In addition, when the spiral shaft 3 moves back and forth along its center line, the spiral ribs can drive the flexible brush teeth 9 to swing back and forth (along the arrangement direction of the flexible brush teeth 9), further improving the effect of scraping off the sludge on both sides of the spiral ribs.

[0027] As a further optimization, in this embodiment, the yield strength of the flexible brush tooth 9 gradually decreases from one end near the brush plate 8 to the other end.

[0028] In this embodiment, the yield strength of the flexible brush teeth 9 gradually decreases from one end near the brush plate 8 to the other end, making the side of the flexible brush teeth 9 near the spiral shaft 3 more flexible. This allows the flexible brush teeth 9 to swing and scrape off the adhering sludge as the spiral shaft 3 rotates and moves axially. Meanwhile, the side of the flexible brush teeth 9 near the brush plate 8 has a high yield strength, which allows the side of the flexible brush teeth 9 near the spiral shaft 3 to fit tightly against the spiral shaft 3.

[0029] As a further optimization, in this embodiment, the spiral shaft 3 is hollow inside and connected to an external water source through a pipe. Multiple through holes 31 are equally spaced around the spiral shaft 3 along its center line. The through holes 31 are arranged radially along the spiral shaft 3 and are connected to its interior. The through holes 31 are located on the side of the spiral shaft 3 away from the bottom of the barrel 1.

[0030] In this embodiment, the hollow spiral shaft 3 is connected to an external water source through a pipe. During the dredging process, a water pump is used to inject water into the interior of the spiral shaft 3, and then the water is sprayed out radially along the spiral shaft 3 through the through hole 31 on the spiral shaft 3. The sprayed water is used to disperse the sludge on the outside of the spiral shaft 3. This not only increases the speed at which the spiral shaft 3 moves the mixture of sludge and water, thus quickly clearing the sludge blockage, but also disperses the sludge on the outside of the spiral shaft 3 to prevent it from forming clumps, making it easier for the sludge to pass smoothly through the turning guide pipe 5 and the pipe to be pumped away.

[0031] As a further optimization, in this embodiment, a plurality of second cylinders 11 are fixedly fixed on the outer side of the barrel 1 in a radial pattern at equal intervals, and are located on the side of the barrel 1 near its opening. The piston rod of the second cylinder 11 extends into the interior of the barrel 1 and is slidably connected thereto. A support block 12 is fixedly fixed at the end of the piston rod of the second cylinder 11.

[0032] In this embodiment, a second cylinder 11 is installed on the outside of the barrel 1. The output shaft of the second cylinder 11 extends through the barrel wall of the barrel 1 and into its interior. During the cleaning of sludge in the water supply and drainage pipe, when it is necessary to connect the barrel 1 to the water supply and drainage pipe 2, the opening of the barrel 1 is placed on the water supply and drainage pipe 2. The second cylinder 11 drives the support block 12 to abut against the outer wall of the water supply and drainage pipe 2. Based on the stable connection between the barrel 1 and the water supply and drainage pipe 2, since the inner wall of the barrel 1 is located on the outside of the water supply and drainage pipe 2 (the inner diameter of the barrel 1 is larger than the inner diameter of the water supply and drainage pipe 2), the flow rate of the mixture of sludge and water will decrease after flowing out of the water supply and drainage pipe 2, thus preventing the mixture of sludge and water from impacting the bottom of the barrel 1 and causing it to fall into the turning guide pipe in an arc trajectory.

[0033] Specifically, the side of the support block 12 away from the piston rod of the second cylinder 11 is arc-shaped, which allows the support block 12 to better abut against the water supply and drainage pipe 2, further improving the stability of the connection between the barrel 1 and the water supply and drainage pipe 2.

[0034] As a further optimization, in this embodiment, the inside of the barrel 1 is provided with an annular airbag 13, which is coaxial with the center line and located on the side of the barrel 1 close to the second cylinder 11. The outer side of the annular airbag 13 is fixedly connected to the inner wall of the barrel 1. The annular airbag 13 expands and contracts radially along the barrel 1. The annular airbag 13 is connected to an external pressure gas transmission device through a pipe.

[0035] In this embodiment, based on the stable connection between the barrel 1 and the water supply and drainage pipe 2 achieved by the second cylinder 11 and the support block 12, the annular airbag 13, which expands and contracts radially along the barrel 1, can seal the annular area between the barrel 1 and the water supply and drainage pipe 2, preventing the mixture of sludge and water from flowing out of the annular area and falling to the ground. It also ensures a sealed connection between the barrel 1 and the water supply and drainage pipe 2, preventing the complete loss of negative pressure suction output by the external negative pressure suction device, which would prevent the mixture of sludge and water in the barrel 1 from being pumped away.

[0036] As a further optimization, in this embodiment, the outer sides of both ends of the annular airbag 13 are respectively surrounded by a second cylinder 11.

[0037] In this embodiment, by setting a second cylinder 11 at each end of the annular airbag 13, the piston rod of the second cylinder 11 is used to limit the deformation of the annular airbag 13 along the center line of the barrel 1, so that after the high-pressure gas is injected into the annular airbag 13, its deformation mainly occurs in the radial direction of the barrel 1, thereby further improving the sealing effect of the annular airbag 13 on the annular area between the barrel 1 and the water supply and drainage pipe 2.

[0038] A method for using a municipal water supply and drainage dredging auxiliary device includes the following steps: Fit the opening of the bucket 1 onto one end of the water supply and drainage pipe 2 to be cleaned, and spray water into the other end of the water supply and drainage pipe 2 to flush away the silt. When a mixture of sludge and water flows out of the turning guide pipe 5, connect the turning guide pipe 5 to the external negative pressure suction equipment through the pipe. Simultaneously, the rotating power element 4 and the external negative pressure suction device are activated. The suction force of the external negative pressure suction device drives the mixture of sludge and water in the water supply and drainage pipe 2 and the tank 1 to move into the tank 1 and the turning guide pipe 5, respectively. When the mixture of sludge and water moves to the side of the water supply and drainage pipe 2 close to the tank 1, the spiral shaft 3 guides the mixture of sludge and water to be transported into the tank 1. The mixture of sludge and water in the tank 1 is then pumped away through the turning guide pipe 5 and the pipe.

[0039] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A dredging auxiliary device for municipal water supply and drainage, characterized in that, include: A barrel body (1) and a spiral drainage assembly disposed on the barrel body (1), wherein the opening of the barrel body (1) is fitted onto the end of the water supply and drainage pipe (2) and is detachably and fixedly connected thereto, the center lines of the barrel body (1) and the water supply and drainage pipe (2) are coaxial, and the spiral drainage assembly includes: A spiral shaft (3) is inserted into the barrel (1) and is coaxial with its center line. One end of the spiral shaft (3) is rotatably connected to the barrel (1), and the other end extends out of the barrel (1) and into the water supply and drainage pipe (2). A rotating power element (4) is fixedly installed on the barrel (1). The output shaft of the rotating power element (4) is connected to the screw shaft (3) to drive the screw shaft (3) to rotate, so as to guide the silt that is squeezed and blocked at the opening of the water supply and drainage pipe (2) to be transported into the barrel (1). The turning guide pipe (5) is vertically fixed on the lower side of the barrel (1). One end of the turning guide pipe (5) is connected to the inside of the barrel (1), and the other end is connected to the external negative pressure suction device through a pipe. This is to attract the mixture of sludge and water in the water supply and drainage pipe (2) and the barrel (1) to move into the barrel (1) and the turning guide pipe (5) respectively, and reduce the suction force on the mixture of sludge and water in the water supply and drainage pipe (2).

2. The municipal water supply and drainage dredging auxiliary equipment according to claim 1, characterized in that, A hexagonal hole connecting pipe (6) is fixedly provided on the inner bottom of the barrel body (1). The hexagonal hole connecting pipe (6) is coaxial with the center line of the barrel body (1). One end of the spiral shaft (3) extends into the hexagonal hole connecting pipe (6) and slides along the center line of the hexagonal hole connecting pipe (6). A first cylinder (7) is fixedly provided in the hexagonal hole connecting pipe (6). The piston rod of the first cylinder (7) is connected to the spiral shaft (3).

3. The municipal water supply and drainage dredging auxiliary equipment according to claim 2, characterized in that, Brush plates (8) are respectively provided on the upper side and the left and right sides of the spiral shaft (3), and are parallel to the center line of the spiral shaft (3). One end of the brush plate (8) is fixedly connected to the barrel (1), and the other end is fixedly provided with flexible brush teeth (9) at equal intervals along the center line of the spiral shaft (3). The spiral ribs on the spiral shaft (3) pass through the adjacent flexible brush teeth (9).

4. The municipal water supply and drainage dredging auxiliary equipment according to claim 3, characterized in that, The yield strength of the flexible brush teeth (9) gradually decreases from one end near the brush plate (8) to the other end.

5. The municipal water supply and drainage dredging auxiliary equipment according to claim 1, characterized in that, The spiral shaft (3) is hollow inside and connected to an external water source through a pipe. Multiple through holes (31) are equally spaced around the spiral shaft (3) along its center line. The through holes (31) are arranged radially along the spiral shaft (3) and connected to its interior. The through holes (31) are located on the side of the spiral shaft (3) away from the bottom of the barrel (1).

6. The municipal water supply and drainage dredging auxiliary equipment according to claim 1, characterized in that, Multiple second cylinders (11) are fixedly arranged radially at equal intervals on the outer side of the barrel (1) and are located on the side of the barrel (1) near its opening. The piston rod of the second cylinder (11) extends into the interior of the barrel (1) and is slidably connected to it. A support block (12) is fixedly provided at the end of the piston rod of the second cylinder (11).

7. The municipal water supply and drainage dredging auxiliary equipment according to claim 6, characterized in that, The barrel (1) has an annular air bladder (13) inside and is coaxial with the center line and located on the side of the barrel (1) near the second cylinder (11). The outer side of the annular air bladder (13) is fixedly connected to the inner wall of the barrel (1). The annular air bladder (13) expands and contracts radially along the barrel (1). The annular air bladder (13) is connected to an external pressure gas transmission device through a pipe.

8. The municipal water supply and drainage dredging auxiliary equipment according to claim 7, characterized in that, The two ends of the annular airbag (13) are respectively surrounded by a second cylinder (11).

9. A method of using a municipal water supply and drainage dredging auxiliary equipment according to any one of claims 1-8, characterized in that, Includes the following steps: The opening of the bucket (1) is fitted onto one end of the water supply and drainage pipe (2) to be dredged, and water is sprayed into the other end of the water supply and drainage pipe (2) to flush away the silt. When a mixture of sludge and water flows out of the turning guide pipe (5), connect the turning guide pipe (5) to the external negative pressure suction device through the pipe; At the same time, the rotating power element (4) and the external negative pressure suction device are started. The suction force of the external negative pressure suction device drives the mixture of sludge and water in the water supply and drainage pipe (2) and the barrel (1) to move into the barrel (1) and the turning guide pipe (5) respectively. When the mixture of sludge and water moves to the side of the water supply and drainage pipe (2) close to the barrel (1), the mixture of sludge and water is guided by the spiral shaft (3) and transported to the barrel (1). The mixture of sludge and water in the barrel (1) is pumped away through the turning guide pipe (5) and the pipe.

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