An automated conveying equipment for municipal sewer sludge

Abstract

This invention relates to the field of sludge conveying technology, and particularly to an automated sludge conveying device for municipal sewers. The device includes a drive unit for moving within the sewer pipe, a collection device mounted on the right end of the drive unit, and a scraping device connected to the collection device. For large-diameter sewer pipes that allow passage of people, existing methods typically use a vacuum truck to suck up and transport sludge from the pipe via a suction pipe. While this method is efficient, existing vacuum trucks are limited by the length of the suction pipe, which restricts the distance the pipe travels within the pipe, preventing complete sludge removal. Furthermore, the suction pipe can only remove sludge containing wastewater. The drive unit of this invention moves the collection device and scraping device along the inner wall of the pipe. The scraping device can clean sludge containing wastewater as well as sludge without wastewater, increasing the equipment's versatility.

Description

Technical Field

[0001] This invention relates to the field of sludge conveying technology, and in particular to an automated sludge conveying device for municipal sewers. Background Technology

[0002] Municipal sewers are a type of urban public facility, typically referring to pipes that discharge sewage and rainwater from buildings, and also to underground channels in cities, factories, or villages for discharging sewage and rainwater.

[0003] Municipal sewer pipes vary in size due to local geographical conditions. Rainwater or sewage flows through the pipes, carrying mud and sand from the ground into them. As the pipes are used, the mud and sand accumulate, affecting the sewage discharge efficiency. Therefore, sewer pipes need to be cleaned regularly, and the sludge from the cleaning needs to be transported to the ground.

[0004] For large-diameter sewer pipes that allow people to pass through, the existing method usually involves using a vacuum truck to suck up and transport the sludge inside the pipe through a suction pipe. The suction pipe on the vacuum truck can effectively suck up the sludge inside the pipe, realizing the transportation of the sludge with high work efficiency.

[0005] However, existing vacuum trucks are limited by the length of their suction pipes, which can only move a short distance within the pipes and cannot completely remove the sludge. Workers still need to transport sludge from other parts of the pipes to the suction pipe. Furthermore, the suction pipe can only suck up sludge containing sewage, resulting in a limited working method. In addition, the suction pipe sucks up sewage along with the sludge, causing sewage to fall onto the ground and impacting the surrounding environment. Summary of the Invention

[0006] Therefore, it is necessary to provide an automated conveying equipment for municipal sewer sludge, which aims to solve the problems caused by the existing technology in conveying municipal sewer sludge.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an automated conveying device for municipal sewer sludge, including a drive device for moving within the sewer pipe, a collection device installed at the right end of the drive device, and a scraping device connected to the collection device.

[0008] The collecting device includes a circular plate mounted on the driving device via a cylindrical rod.

[0009] A collection frame is installed at the right end of the circular plate. Two first columnar rods are symmetrically installed at the front and back of the upper right side wall of the collection frame. A squeezing mechanism for squeezing out the water from the sludge is installed inside the collection frame.

[0010] Filter bags used to collect sludge and inserted into the squeezing mechanism.

[0011] According to an embodiment of the present invention, the extrusion mechanism includes a first arc plate installed on the left end of the right wall of the collection frame. Two electric push rods installed on the right wall of the collection frame are symmetrically arranged on the front and rear sides of the first arc plate. The left ends of the two electric push rods are jointly installed with a semi-circular plate with an arc-shaped protrusion. The semi-circular plate is located inside the first arc plate. A plurality of evenly distributed first through holes are provided in the middle of the first arc plate. Two triangular strips are symmetrically installed on the front and rear of the right end of the semi-circular plate. The triangular strips slide through and engage with the right wall of the collection frame. Two second columnar rods are symmetrically installed on the upper end of the semi-circular plate.

[0012] According to an embodiment of the present invention, the collection frame has a semi-cylindrical structure, and a plurality of evenly distributed second through holes are provided on the arc-shaped wall of the collection frame. A movable wheel is rotatably connected to the lower right end of the collection frame through a connecting frame, and a plurality of partition plates installed on the collection frame are provided on both the front and rear sides of the movable wheel.

[0013] According to an embodiment of the present invention, the filter bag is provided with insertion holes at all four corners. The two insertion holes on the left side are inserted into two second columnar rods, and the two insertion holes on the right side are inserted into two first columnar rods. The filter bag is provided with cross-distributed lifting ropes.

[0014] According to an embodiment of the present invention, the scraping device includes an annular plate rotatably connected to the circular plate, a plurality of circumferentially evenly distributed connecting columns are installed at the left end of the annular plate, a gear ring is installed at the left end of the plurality of connecting columns, a driving mechanism installed on the circular plate is meshed in the gear ring, and a plurality of circumferentially evenly distributed scraping plates are installed at the right end of the annular plate.

[0015] According to an embodiment of the present invention, the driving mechanism includes a drive motor mounted on the left end of the circular plate, and a transmission gear meshing with a gear ring is mounted on the output shaft of the drive motor.

[0016] According to an embodiment of the present invention, the annular plate is provided with a plurality of circumferentially evenly distributed arc-shaped through holes, and a filter screen is provided in the arc-shaped through holes. A plurality of circumferentially evenly distributed ball bearings are rotatably connected to the outer ring surface of the annular plate.

[0017] According to an embodiment of the present invention, the driving device includes a limiting frame, and an electric wheel is rotatably connected to the lower end of the limiting frame.

[0018] According to an embodiment of the present invention, a plurality of filter holes for drainage are uniformly provided on the scraper plate, and a baffle plate for blocking sludge is installed at the right end of the scraper plate.

[0019] According to an embodiment of the present invention, the limiting frame has two rotating wheels that are symmetrically connected front and rear for movement.

[0020] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The rotating scraper with a filter screen can scrape the sludge in the pipeline into the filter cloth bag for centralized collection and transportation, and can prevent the sludge from flowing back to the pipeline cleaning section with the sewage during transportation, thus ensuring the sludge transportation effect.

[0021] 2. During the transportation process, the wastewater contained in the sludge collected inside the filter bag can be separated from the sludge by its own gravity and fall into the pipeline. Before the filter bag is lifted, the sludge inside the filter bag is further squeezed by the squeezing mechanism, thereby removing a large amount of wastewater from the sludge, which facilitates the subsequent recycling of the sludge. It can also effectively reduce the phenomenon of wastewater dripping onto the ground during sludge transportation on the road, thus reducing the impact of wastewater on the surrounding environment.

[0022] 3. The filter bag used in this invention can be reused, thereby reducing the cost of sewage sludge transportation and reducing sludge transportation consumption.

[0023] 4. The drive unit moves the collection and scraping devices along the inner wall of the pipe, thereby continuously cleaning, collecting and transporting the sludge in the pipe. This reduces the need for manual sludge cleaning. The scraping device can clean sludge containing wastewater as well as sludge without wastewater, thus increasing the equipment's applicability. Attached Figure Description

[0024] 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 A first-view perspective three-dimensional structural diagram of an automated municipal sewer sludge conveying device provided according to an embodiment of the present invention is shown.

[0026] Figure 2 A second-view perspective three-dimensional structural diagram of an automated municipal sewer sludge conveying device provided according to an embodiment of the present invention is shown.

[0027] Figure 3 A front view of an automated municipal sewer sludge conveying device provided according to an embodiment of the present invention is shown.

[0028] Figure 4 A left view of an automated municipal sewer sludge conveying device provided according to an embodiment of the present invention is shown.

[0029] Figure 5 It shows Figure 3 Sectional view of AA.

[0030] Figure 6 It shows Figure 5 A magnified view of point N in the middle.

[0031] Figure 7 It shows Figure 4 A cross-sectional view of BB.

[0032] Figure 8 A schematic diagram of the structure of the automated sludge conveying equipment for municipal sewers provided in an embodiment of the present invention is shown, illustrating the removal of filter bags.

[0033] Figure 9 The diagram shows the structure of the collection frame, second through hole, first arc plate, first through hole and semi-circular plate of the automated sludge conveying equipment for municipal sewers provided in an embodiment of the present invention.

[0034] The above-mentioned figures include the following reference numerals: 1, driving device; 2, collecting device; 3, scraping device.

[0035] 11. Limiting frame; 12. Electric wheel; 111. Rotating wheel.

[0036] 21. Circular plate; 22. Collection frame; 221. Second through hole; 222. Moving wheel; 223. Divider plate; 23. Extrusion mechanism; 231. First arc plate; 2311. First through hole; 232. Electric push rod; 233. Semicircular plate; 234. Triangular strip; 235. Second columnar rod; 24. Filter bag; 25. First columnar rod.

[0037] 31. Circular ring plate; 311. Arc-shaped through hole; 32. Connecting column; 33. Gear ring; 34. Drive mechanism; 341. Drive motor; 342. Transmission gear; 35. Scraper plate. Detailed Implementation

[0038] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] See Figures 1-4 An automated sludge conveying device for municipal sewers includes a drive unit 1 for moving within a sewer pipe, a collection device 2 installed at the right end of the drive unit 1, and a scraping device 3 connected to the collection device 2 for scraping and conveying sludge circumferentially within the sewer pipe.

[0040] See Figure 1 The driving device 1 includes a limiting frame 11, and an electric wheel 12 is rotatably connected to the lower end of the limiting frame 11.

[0041] See Figure 1 The limiting frame 11 has two rotating wheels 111 that are symmetrically connected to each other for movement.

[0042] See Figure 1 In specific operations, the drive unit 1, collection unit 2, and scraping unit 3 are hoisted to the sewer pipe opening using existing hoisting equipment. The electric wheel 12 under the limit frame 11 is in close contact with the bottom of the inner wall of the pipe, while the two rotating wheels 111 on the limit frame 11 are in close contact with the middle of the inner wall of the pipe. The two rotating wheels 111 can assist the movement of the limit frame 11 and also limit the rotation of the limit frame 11, preventing the limit frame 11 from rotating during the subsequent cleaning and conveying process, thus ensuring the stability of the movement of the limit frame 11. The electric wheel 12 is an existing electric drive wheel, which drives the limit frame 11 to move along the pipe.

[0043] See Figure 2 , Figure 5 and Figure 7 The collecting device 2 includes a circular plate 21 mounted on the driving device 1 via a cylindrical rod.

[0044] See Figure 7 and Figure 8 The scraping device 3 includes a circular ring plate 31 rotatably connected to the circular plate 21. A plurality of circumferentially evenly distributed connecting posts 32 are installed at the left end of the circular ring plate 31. A gear ring 33 is installed at the left end of the plurality of connecting posts 32. A drive mechanism 34 installed on the circular plate 21 is meshed inside the gear ring 33. A plurality of circumferentially evenly distributed scraping plates 35 are installed at the right end of the circular ring plate 31.

[0045] See Figure 7 The drive mechanism 34 includes a drive motor 341 mounted on the left end of the circular plate 21, and a transmission gear 342 that meshes with the gear ring 33 is mounted on the output shaft of the drive motor 341.

[0046] See Figure 2 The annular plate 31 is provided with a plurality of circumferentially evenly distributed arc-shaped through holes 311, and a filter screen is provided inside the arc-shaped through holes 311. A plurality of circumferentially evenly distributed balls are rotatably connected to the outer ring surface of the annular plate 31.

[0047] See Figure 2 The scraper 35 is evenly provided with a plurality of filter holes for drainage, and a baffle plate for blocking sludge is installed on the right end of the scraper 35.

[0048] See Figure 2 , Figure 5 , Figure 7 and Figure 8 In specific operation, the limit frame 11 drives the circular plate 21 into the pipe via the cylindrical rod. The circular plate 21 drives the annular plate 31 to move into the pipe. Then, the drive motor 341 is started. The drive motor 341 drives the gear ring 33 to rotate via the transmission gear 342. The gear ring 33 drives the annular plate 31 to rotate via multiple connecting columns 32. The annular plate 31 drives multiple scraping plates 35 to rotate in a ring along the inner wall of the pipe. After the rotating scraping plates 35 move to the bottom of the inner wall of the pipe, the scraping plates 35 scrape up the sludge in the pipe. The filter holes on the scraping plates 35 facilitate the discharge of wastewater from the sludge. The baffles on the scraping plates 35 are used to block the sludge and prevent the sludge from sliding off the right end of the scraping plates. The scraping plates 35 drive... As the sludge moves along the inner wall of the pipe, the scraper 35 rotates the sludge from a horizontal to a vertical position. During this process, the sludge on the scraper 35 gradually falls off into the collection device 2, where it is collected. The limit frame 11 continues to move the circular plate 21 and the annular plate 31 along the pipe via the electric wheel 12. The ball bearings on the annular plate 31 reduce the friction between the annular plate 31 and the pipe wall, facilitating its movement. The filter screen inside the arc-shaped through hole 311 facilitates the flow of sewage as the annular plate 31 moves, preventing sewage accumulation. It also filters sludge and debris in the sewage, preventing sludge from flowing back to the cleaned area after cleaning.

[0049] See Figure 7 The collection device 2 also includes a collection frame 22 installed at the right end of the circular plate 21. Two first columnar rods 25 are symmetrically installed at the front and back of the upper right side wall of the collection frame 22. A squeezing mechanism 23 for squeezing out the water in the sludge is installed inside the collection frame 22.

[0050] See Figure 7 The collection device 2 also includes a filter bag 24 for collecting sludge and inserted into the squeezing mechanism 23.

[0051] See Figure 7In practice, before operation, the filter bag 24 is manually placed onto the collection frame 22 and the squeezing mechanism 23. Then, sludge falls from the rotating scraper 35 into the filter bag 24, which collects the sludge. After cleaning the pipeline for a period of time and moving to the manhole opening, the squeezing mechanism 23 is activated to squeeze the sludge inside the filter bag 24. During this process, the filter bag 24 is not completely filled with sludge to prevent excessive sludge buildup during squeezing. To further prevent sludge overflow, filter bags 24 with zippers or drawstrings can be selected. Before squeezing, the opening of the filter bag 24 can be closed tightly. After squeezing, the excess sewage in the sludge will be discharged. Then, the filter bag 24 is lifted by the existing hoisting equipment on the road and lifted out of the manhole into the sludge recovery vehicle. The empty filter bag 24 is then lowered back down or a new filter bag 24 is placed on the collection frame 22 and the squeezing mechanism 23. Then, the sludge cleaning and transportation operation continues.

[0052] See Figures 6-9 The extrusion mechanism 23 includes a first arc plate 231 installed on the left end of the right wall of the collection frame 22. Two electric push rods 232 are symmetrically arranged on the front and rear sides of the first arc plate 231 and installed on the right wall of the collection frame 22. The left ends of the two electric push rods 232 are jointly installed with a semi-circular plate 233 with an arc-shaped protrusion. The semi-circular plate 233 is located inside the first arc plate 231. The middle part of the first arc plate 231 is provided with a plurality of evenly distributed first through holes 2311. Two triangular strips 234 are symmetrically installed on the front and rear of the right end of the semi-circular plate 233. The triangular strips 234 slide through the right wall of the collection frame 22. Two second columnar rods 235 are symmetrically installed on the upper end of the semi-circular plate 233.

[0053] See Figure 7 and Figure 8 The collection frame 22 has a semi-cylindrical structure. Multiple evenly distributed second through holes 221 are provided on the arc-shaped wall of the collection frame 22. A movable wheel 222 is rotatably connected to the lower right end of the collection frame 22 via a connecting frame. Multiple partition plates 223 are provided on the front and rear sides of the movable wheel 222.

[0054] See Figure 2 , Figure 7 and Figure 8 The filter bag 24 has insertion holes at all four corners. The two insertion holes on the left side are connected to the two second columnar rods 235, and the two insertion holes on the right side are connected to the two first columnar rods 25. The filter bag 24 is provided with crisscrossed lifting ropes.

[0055] See Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9In practice, workers attach the four insertion holes of the filter bag 24 to the two second columnar rods 235 and the two first columnar rods 25 respectively. The lifting rope at the top of the filter bag 24 facilitates its hoisting, and the filter bag 24 can be reused, reducing the cost of sludge transportation. After a section of the pipeline is cleaned, the filter bag 24 transports the sludge to the manhole opening. Two electric push rods 232 are then activated, and the electric push rods 232 squeeze the filter bag 24 through the semi-circular plate 233. The sludge is compressed to discharge the wastewater, reducing the weight of the filter bag 24 during hoisting, extending its service life, and facilitating subsequent sludge recycling. The wastewater generated during the compression process falls from the first through hole 2311 on the first arc plate 231 onto the collection frame 22, and then is discharged from the second through hole 221 on the collection frame 22. The moving wheels 222 on the collection frame 22 are used for sliding the collection frame 22, and the separator plate 223 is used to divide the uncleaned sludge for subsequent collection and transportation.

[0056] When using the present invention in a specific way: S1: The drive device 1, the collection device 2 and the scraping device 3 are hoisted to the sewer pipe opening using existing hoisting equipment, and then the filter bag 24 is put on the collection frame 22 and the squeezing mechanism 23.

[0057] S2: Start the drive motor 341. The drive motor 341 drives the gear ring 33 to rotate through the transmission gear 342. The gear ring 33 drives the circular plate 31 to rotate through multiple connecting columns 32. The circular plate 31 drives multiple scraping plates 35 to scrape up the sludge on the inner wall of the pipe. As the scraping plates 35 rotate the sludge from a horizontal state to a vertical state, the sludge on the scraping plates 35 gradually falls from the scraping plates 35 into the filter bag 24. At the same time, start the electric wheel 12. The electric wheel 12 drives the limit frame 11 to move along the pipe.

[0058] S3: The electric wheel 12 drives the circular plate 21 to move through the limit frame 11. After the circular plate 21 drives the scraper plate 35 to move for a period of time through the ring plate 31, the filter bag 24 collects the sludge.

[0059] S4: When the limit frame 11 moves to the manhole opening, the squeezing mechanism 23 is activated. The squeezing mechanism 23 squeezes the sludge in the filter bag 24. During this process, the amount of sludge in the filter bag 24 is not full to avoid the sludge overflowing during squeezing. After being squeezed, the excess sewage in the sludge is discharged. Then, the filter bag 24 is lifted up by the existing hoisting equipment on the road and lifted out of the manhole to the sludge recovery vehicle. The emptied filter bag 24 is then lifted down again or a new filter bag 24 is placed on the collection frame 22 and the squeezing mechanism 23. Then, the sludge cleaning and transportation operation continues until the pipeline cleaning is completed.

[0060] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for 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 the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0061] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," "installed," and "connected" 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.

[0062] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automated conveying device for municipal sewer sludge, characterized in that: It includes a drive device (1) for moving within a sewer pipe, a collection device (2) is installed at the right end of the drive device (1), and a scraping device (3) for scraping and conveying sludge circumferentially within the sewer pipe is connected to the collection device (2). The collecting device (2) includes: A circular plate (21) is mounted on the drive device (1) via a cylindrical rod; A collection frame (22) is installed on the right end of the circular plate (21). Two first columnar rods (25) are symmetrically installed on the upper right side wall of the collection frame (22). The collection frame (22) has a semi-cylindrical structure. Multiple evenly distributed second through holes (221) are provided on the arc-shaped wall of the collection frame (22). A squeezing mechanism (23) for squeezing out the water in the sludge is installed inside the collection frame (22). The extrusion mechanism (23) includes a first arc plate (231) installed on the left end of the right wall of the collection frame (22). Two electric push rods (232) are symmetrically arranged on the front and rear sides of the first arc plate (231) and installed on the right wall of the collection frame (22). The left ends of the two electric push rods (232) are jointly installed with a semi-circular plate (233) with an arc protrusion. The semi-circular plate (233) is located inside the first arc plate (231). The middle part of the first arc plate (231) is provided with a plurality of evenly distributed first through holes (2311). Two triangular strips (234) are symmetrically installed on the front and rear of the right end of the semi-circular plate (233). The triangular strips (234) slide through the right wall of the collection frame (22). Two second columnar rods (235) are symmetrically installed on the upper end of the semi-circular plate (233). It also includes a filter bag (24) for collecting sludge and inserted into the squeezing mechanism (23). The filter bag (24) has insertion holes at all four corners. The two insertion holes on the left side are inserted into two second columnar rods (235), and the two insertion holes on the right side are inserted into two first columnar rods (25). The filter bag (24) is provided with cross-distributed lifting ropes. Before squeezing, the opening of the filter bag (24) is closed tightly. When the squeezing mechanism (23) squeezes the sludge in the filter bag (24), the amount of sludge in the filter bag (24) does not fill the filter bag (24).

2. The automated sludge conveying equipment for municipal sewers according to claim 1, characterized in that: The lower right end of the collection box (22) is connected to a movable wheel (222) via a connecting frame. Multiple partition plates (223) are installed on the collection box (22) on both the front and rear sides of the movable wheel (222).

3. The automated sludge conveying equipment for municipal sewers according to claim 1, characterized in that: The scraping device (3) includes a circular ring plate (31) rotatably connected to the circular plate (21). Multiple circumferentially evenly distributed connecting columns (32) are installed on the left end of the circular ring plate (31). A gear ring (33) is installed on the left end of the multiple connecting columns (32). A drive mechanism (34) installed on the circular plate (21) is meshed inside the gear ring (33). Multiple circumferentially evenly distributed scraping plates (35) are installed on the right end of the circular ring plate (31).

4. The automated sludge conveying equipment for municipal sewers according to claim 3, characterized in that: The drive mechanism (34) includes a drive motor (341) mounted on the left end of the circular plate (21), and a transmission gear (342) that meshes with the gear ring (33) is mounted on the output shaft of the drive motor (341).

5. The automated sludge conveying equipment for municipal sewers according to claim 3, characterized in that: The annular plate (31) is provided with a plurality of circumferentially evenly distributed arc-shaped through holes (311), and a filter screen is provided inside the arc-shaped through holes (311). A plurality of circumferentially evenly distributed balls are rotatably connected to the outer ring surface of the annular plate (31).

6. The automated sludge conveying equipment for municipal sewers according to claim 1, characterized in that: The drive device (1) includes a limiting frame (11), and an electric wheel (12) is rotatably connected to the lower end of the limiting frame (11).

7. The automated sludge conveying equipment for municipal sewers according to claim 3, characterized in that: The scraper (35) is provided with a plurality of filter holes for drainage, and a baffle plate for blocking sludge is installed on the right end of the scraper (35).

8. An automated sludge conveying device for municipal sewers according to claim 6, characterized in that: The limit The frame (11) has two rotating wheels (111) that are symmetrically connected front and rear for movement.

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