A drainage pipe desilting method suitable for various types of roads

Abstract

The present invention relates to the field of municipal pipe networks, and in particular to a method for desilting drainage pipes applicable to various types of roads. The method comprises the following steps: before desilting, the manhole covers of the upstream inspection well and the downstream inspection well are first opened for ventilation, and then a desilting trolley is sent into the pipeline from the downstream inspection well, and the length of the steel wire rope can be adjusted according to the desilting distance to achieve long-distance desilting; when the desilting trolley travels in the pipeline, the water flow in the pipeline is discharged through the water filter screen at the rear of the desilting trolley, and the front end of the desilting trolley is wrapped with multiple turns of steel wire; at the upstream inspection well, a small grab truck can be used to transfer the silt to a transport vehicle, or a shallow inspection well can be salvaged manually; the present invention solves the problem that the desilting of municipal drainage pipes is restricted by the environment, and is applicable to various types of roads, pipes of various diameters and materials; compared with desilting by a desilting vehicle, the desilting cost is greatly reduced, and it is no longer necessary to transport all the dilutions of silt and water, and only the silt needs to be transported, thereby reducing the cost of external transportation.

Description

Technical Field

[0001] The invention relates to the field of municipal pipe networks, and in particular to a drainage pipe desilting method suitable for various types of roads. Background Art

[0002] The municipal drainage network is a very important part of urban infrastructure, and it has the important function of removing rainwater and sewage from the city. It can effectively remove rainwater and sewage, avoid the mixing of rainwater and sewage, and reduce urban waterlogging caused by poor drainage. Reasonable design and construction of drainage networks can effectively prevent waterlogging during the rainy season, improve the city's flood control capabilities, ensure the smooth flow of urban evacuation channels, and reduce the losses caused by urban waterlogging.

[0003] There are two commonly used methods for desilting drainage pipes. The first method is to use a desilting truck to dredge the pipes. The silt in the pipes is diluted by the high-pressure nozzles of the desilting trucks, and then the water flows downstream by its own weight. This method has three problems. First, some pipe walls are still adhered to silt, and the desilting is not thorough. Second, the water capacity of the desilting truck is small, and water needs to be added continuously, so the long-distance desilting efficiency is low. Third, the narrow alleys are inaccessible to desilting trucks. The second method is to combine desilting trucks with sewage suction trucks. High-pressure nozzles are used for flushing and dilution, while sewage suction trucks are used for absorption. This method is significantly faster than the first method, but it also has the three problems of the first method, and the above two methods are more expensive. Summary of the invention

[0004] In order to solve the above problems of incomplete pipe dredging, low dredging efficiency, inability to dredge narrow roads, high construction costs, etc., the present invention provides a drainage pipe dredging method applicable to various roads. Compared with general technologies, this solution saves time and can be used on various roads (including narrow lanes that dredging vehicles cannot enter), which is environmentally friendly and energy-saving, and reduces costs and increases efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A method for desilting drainage pipes applicable to various types of roads comprises the following steps: (1) Before dredging, first open the manhole covers of the upstream and downstream inspection wells for ventilation, and then send the dredging trolley into the pipeline from the downstream inspection well. The length of the wire rope can be adjusted according to the dredging distance to achieve long-distance dredging; (2) The dredging vehicle has wheels on all sides; (3) When the dredging trolley moves in the pipeline, the water in the pipeline is discharged through the water filter screen at the rear of the dredging trolley, and the front end of the dredging trolley is wrapped with multiple turns of steel wire; (4) Install a plastic slag-blocking grille plate in the upstream inspection well; (5) At the upstream inspection well, a small grab truck can be used to transfer the sludge to a transport vehicle, or shallow inspection wells can be salvaged manually; The method relates to a device comprising: Upstream inspection well; The downstream inspection well is connected to the upstream inspection well through a pipeline, and a silt removal device is provided between the pipeline and the upstream inspection well and the downstream inspection well; The slag retaining grid is fixed at the downstream of the pipeline.

[0006] The desilting equipment includes: The fixed pulley is used to lift the dredging bucket and reduce the lifting resistance; A pulley support rod, on which the fixed pulley is mounted; A fixed bracket is installed on the upper part of the downstream inspection well, and the pulley support rod is fixedly connected to the fixed bracket; Steering wheel, connected to the pulley support rod, The wire rope passes through the fixed pulley, the fixed bracket and the steering wheel; The dredging trolley is located in the pipeline, and one end of the wire rope is fixedly connected to the dredging trolley.

[0007] The dredging vehicle includes: The vehicle body is a cylindrical structure; The water filter screen is fixed on one side of the vehicle body; Wheels are arranged on the periphery of the vehicle body, and the wheels protrude from the outer end surface of the vehicle body; The inner filter assembly is arranged in the vehicle body and is movable relative to the vehicle body.

[0008] The internal filter assembly includes: A limit column is located in the vehicle body, one end of which is fixedly connected to the center of the water filter screen, and the limit column protrudes from the outer end surface of the vehicle body; The grid plate is a circular plate structure with a through hole set therethrough. The through hole is a rectangular structure, and the limit post passes through the grid plate; One end of the spring is fixedly connected to the end of the vehicle body, and the other end of the spring is fixedly connected to the outer edge of the grille plate.

[0009] A retaining ring plate is fixed at the end of the limiting column, the retaining ring plate is an umbrella-shaped structure, and the steel wire rope is fixedly connected to the retaining ring plate.

[0010] Compared with the prior art, the invention has the following beneficial effects: (1) It solves the problem of environmental restrictions on the dredging of municipal drainage pipes and is applicable to pipes of various roads, diameters and materials; (2) Compared with silt removal by silt removal trucks, the cost of silt removal is greatly reduced, and it is no longer necessary to transport all the silt and water dilutions away. Only the silt needs to be transported away, which reduces the cost of external transportation; (3) This patent does not require any fuel or water source and can dredge silt continuously and quickly, greatly improving the dredging speed.

[0011] (4) When the dredging vehicle is moving, the steel wool scrapes the pipe wall. Compared with the dredging vehicle, no more silt is left, which improves the dredging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention.

[0014] Figure 2 yes Figure 1 Schematic diagram of the BB structure.

[0015] Figure 3 This is a schematic diagram of the structure of the dredging vehicle in the present invention. Figure 1 .

[0016] Figure 4 It is a schematic diagram of the groove ring structure in the present invention.

[0017] Figure 5 It is a schematic diagram of the vehicle body structure in the present invention.

[0018] Figure 6 This is a schematic diagram of the structure of the dredging vehicle in the present invention. Figure 2 . DETAILED DESCRIPTION

[0019] The present invention is further described in detail below by examples. The examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0020] Pipeline desilting process Traffic diversion → Open the upstream and downstream manhole covers for ventilation → Install fixed brackets and slag blocking grilles → Place the silt removal vehicle into the downstream pipeline → Pull the wire rope for dredging → Transfer the silt to the transport vehicle using a small grab truck or manually → Resume traffic.

[0021] A method for desilting drainage pipes applicable to various types of roads comprises the following steps: (1) Before dredging, first open the manhole covers of the upstream inspection well 1 and the downstream inspection well 2 for ventilation, and then send the dredging trolley into the pipeline from the downstream inspection well 2. The length of the wire rope can be adjusted according to the dredging distance to achieve long-distance dredging; (2) The dredging trolley 7 is provided with wheels 73 on all sides, which are used to stabilize its position in the pipeline and to reduce the resistance when pulling the wire rope.

[0022] (3) When the dredging trolley 7 moves in the pipeline, the water in the pipeline is discharged through the water filter screen 72 at the rear of the dredging trolley, reducing the amount of external transportation and improving the dredging efficiency. The front end of the dredging trolley 7 is wrapped with multiple turns of steel wire, one is to rub the pipe wall to improve the dredging quality, and the other is to fill the gap between the dredging trolley and the pipeline to intercept silt and discharge water.

[0023] (4) A plastic slag-blocking grille plate 742 is installed in the upstream inspection well. Firstly, it can ensure the normal operation of the pipeline and can continuously drain the water to clear the silt; secondly, it can intercept the silt cleared from the downstream to prevent it from entering the upstream pipeline.

[0024] (5) At the upstream inspection well 1, a small grab truck can be used to transfer the sludge to a transport vehicle, or the shallow inspection well can be salvaged manually. At this time, most of the water in the salvaged sludge has been drained, which can reduce the amount of sludge transported out.

[0025] The method relates to a device comprising: In the upstream inspection well 1, the well cover can be opened to put the dredging vehicle into the pipeline and observe the dredging situation; The downstream inspection well 2 is connected to the upstream inspection well 1 through a pipeline. The downstream inspection well 2 is used to place dredging equipment after opening. A dredging device is arranged between the pipeline and the upstream inspection well 1 and the downstream inspection well 2. The slag retaining grid 12 is fixed at the downstream of the pipeline. The slag retaining grid 12 can filter out the moisture in the sludge in the upstream pipeline, reduce the number of sludge transportation and improve the dredging efficiency; and prevent the sludge in the upstream pipeline from flowing to the downstream pipeline after being cleared.

[0026] The desilting equipment includes: The fixed pulley 3 is used to lift the dredging bucket and reduce the lifting resistance; The pulley support rod 4, the fixed pulley 3 is mounted on the pulley support rod 4, and the pulley support rod 4 provides support for the steering wheel and the fixed pulley 3; The fixed bracket 5 is installed on the upper part of the downstream inspection well 2, and the pulley support rod 4 is fixedly connected to the fixed bracket 5; the fixed bracket 5 is used to fix the pulley support rod 4; The steering wheel 11 is connected to the pulley support rod 4, which is convenient for lifting the silt removal vehicle and ensures the smooth movement of the silt removal vehicle; The wire rope 10 passes through the fixed pulley 3, the fixed bracket 5 and the steering wheel 11. The wire rope 10 is used to connect the dredging trolley 7 and the fixed pulley 3; The dredging trolley 7 is located in the pipeline, and one end of the steel wire rope 10 is fixedly connected to the dredging trolley 7; The dredging trolley 7 comprises: The vehicle body 71 is a cylindrical structure; the size of the dredging vehicle can be adjusted according to the diameter of the pipeline. The core of the dredging equipment can accommodate a certain amount of silt and push the silt to the downstream inspection well 2; the preferred end of the vehicle body 71 is fixed with a groove ring 711, and a steel wire is wound inside the groove ring 711. The steel wire is wound multiple times so that the outer steel wire protrudes from the outer end surface of the groove ring 711. The steel wire can scrape the inner wall of the pipeline to remove impurities; secondly, it can prevent the silt from flowing away from the gap between the dredging vehicle and the pipeline; The water filter screen 72 is fixed to one side of the vehicle body 71; the water filter screen 72 is used to filter out water and leave sludge during the dredging process; The wheels 73 are arranged on the periphery of the vehicle body 71, and the wheels 73 protrude from the outer end surface of the vehicle body 71; the function of the wheels 73 is to reduce the travel resistance of the dredging vehicle 7; The inner filter assembly 74 is disposed in the vehicle body 71 and is movable relative to the vehicle body 71; The inner filter assembly 74 includes: The limiting column 741 is located inside the vehicle body 71, one end of the limiting column 741 is fixedly connected to the center of the water filter screen 72, and the limiting column 741 protrudes from the outer end surface of the vehicle body 71; The grid plate 742 is a circular plate structure, and a through hole 7421 is provided therethrough. The through hole 7421 is a rectangular structure, and the limiting column 741 passes through the grid plate 742; One end of the spring 743 is fixedly connected to the end of the vehicle body 71, and the other end of the spring 743 is fixedly connected to the outer edge of the grille plate 742; the grille plate 742 is used to filter the sludge blocks, and at the same time, under the action of the spring 743 and the limit column 741, the grille plate 742 can be moved in the vehicle body 71, so that the chamber formed between the lower grille plate 742 and the water filter screen plate 72 can be expanded and contracted with the movement of the vehicle body 71, which is conducive to "squeezing and crushing" the sludge and other impurities in the chamber.

[0027] Preferably, the end of the limiting column 741 is fixed with a retaining plate 7411, and the retaining plate 7411 is an umbrella-shaped structure; the steel wire rope 10 is fixedly connected to the retaining plate 7411; This scheme has dredged a total of 22km of DN300-800 drainage pipes in Xiaozhou Village, a sewage interception and pipe-collecting project in Chisha Village, Beishan Village, Sanjiao Village, Guitian Village, Xiaozhou Village, and Shiji Village in Haizhu District, Guangzhou. The project is located in an ancient tourist village with narrow alleys and dredging machinery cannot enter the center. After adopting this scheme, the dredging quality and speed have been improved, the construction cost has been reduced, and good economic and social benefits have been brought.

[0028] In the supporting public pipe network project in Tongdewei area of ​​Baiyun District, Guangzhou, a total of 7km of DN300-1200 pipes were dredged. The project is located on a municipal road with abundant groundwater, resulting in a high water content of sludge in the pipes. After adopting this patent, the amount of sludge transportation was reduced, the dredging speed was accelerated, and the construction quality was improved, which was unanimously praised by the Water Affairs Bureau and all participating units.

[0029] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for desilting drainage pipes applicable to various types of roads, characterized in that: The steps include: (1) Before dredging, first open the manhole covers of the upstream and downstream inspection wells for ventilation, and then send the dredging trolley into the pipeline from the downstream inspection well. The length of the wire rope can be adjusted according to the dredging distance to achieve long-distance dredging; (2) The dredging vehicle has wheels on all sides; (3) When the dredging trolley moves in the pipeline, the water in the pipeline is discharged through the water filter screen at the rear of the dredging trolley, and the front end of the dredging trolley is wrapped with multiple turns of steel wire; (4) Install a plastic slag-blocking grille plate in the upstream inspection well; (5) At the upstream inspection well, a small grab truck can be used to transfer the sludge to a transport vehicle, or shallow inspection wells can be salvaged manually; The method relates to a device comprising: Upstream inspection well; The downstream inspection well is connected to the upstream inspection well through a pipeline, and a silt removal device is provided between the pipeline and the upstream inspection well and the downstream inspection well; The slag retaining grid is fixed at the downstream of the pipeline.

2. The drainage pipe desilting method applicable to various types of roads according to claim 1, characterized in that: The desilting equipment includes: The fixed pulley is used to lift the dredging bucket and reduce the lifting resistance; A pulley support rod, on which the fixed pulley is mounted; A fixed bracket is installed on the upper part of the downstream inspection well, and the pulley support rod is fixedly connected to the fixed bracket; Steering wheel, connected to the pulley support rod, The wire rope passes through the fixed pulley, the fixed bracket and the steering wheel; The dredging trolley is located in the pipeline, and one end of the wire rope is fixedly connected to the dredging trolley.

3. The drainage pipe desilting method applicable to various types of roads according to claim 2, characterized in that: The dredging vehicle includes: The vehicle body is a cylindrical structure; The water filter screen is fixed on one side of the vehicle body; Wheels are arranged on the periphery of the vehicle body, and the wheels protrude from the outer end surface of the vehicle body; The inner filter assembly is arranged in the vehicle body and is movable relative to the vehicle body.

4. The drainage pipe desilting method applicable to various types of roads according to claim 3 is characterized in that: The internal filter assembly includes: A limit column is located in the vehicle body, one end of which is fixedly connected to the center of the water filter screen, and the limit column protrudes from the outer end surface of the vehicle body; The grid plate is a circular plate structure with a through hole set therethrough. The through hole is a rectangular structure, and the limit post passes through the grid plate; One end of the spring is fixedly connected to the end of the vehicle body, and the other end of the spring is fixedly connected to the outer edge of the grille plate.

5. The drainage pipe desilting method applicable to various types of roads according to claim 4, characterized in that: A retaining ring plate is fixed at the end of the limiting column, the retaining ring plate is an umbrella-shaped structure, and the steel wire rope is fixedly connected to the retaining ring plate.

Images