Hydraulic cleaning device for sewage pipeline

Abstract

The utility model provides a sewage pipeline hydraulic cleaning device which comprises an inspection well body, one side of the inspection well body is provided with a sewage inlet, the other side of the inspection well body is provided with a sewage outlet, the sewage inlet is higher than the sewage outlet, the front end of the sewage outlet is provided with a shaft pin installation platform, and the shaft pin installation platform is provided with a shaft pin. A buoyancy switch cover plate is hinged through a shaft pin, and the buoyancy switch cover plate comprises a cover plate body, a connecting crankshaft and a floating ball; a shaft pin through hole is formed in the middle of the connecting crankshaft, and the connecting crankshaft is hinged to the shaft pin through the shaft pin through hole; and the cover plate body is driven by the crankshaft to cover or uncover the sewage outlet. The cleaning device does not need external energy supply and can really achieve low energy consumption; and the cleaning device is simple in structure, low in maintenance cost and suitable for large-atmosphere application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal drainage pipe network maintenance, in particular to a sewage pipe hydraulic cleaning device. Background Art

[0002] The urban drainage system includes drainage pipe networks, channel boxes, pumping stations, etc. Pipeline desilting is an important part of the maintenance of the drainage system, that is, to dredge the pipes, clean the silt in the pipes, and keep them unobstructed for a long time. Pipeline desilting is divided into manual desilting and hydraulic desilting. Manual desilting is naturally to dredge the silted pipes by manpower or desilting equipment; hydraulic desilting is to flush the silt accumulated in the pipes by the water itself in the drainage pipes to achieve desilting. In actual work, sewage pipes used to collect sewage from various regions are often discharged with a large amount of debris and mud. In order to prevent these silt-prone objects from settling before reaching nodes such as channel boxes or pumping stations, thereby causing siltation in the pipes, the existing technology is to design the pipes into pipe lines with a certain slope (inclination) in the horizontal direction. The specifications for the slope of municipal drainage pipes are mainly stipulated by national and local relevant industry standards and engineering design specifications and other documents, including the minimum slope of pipes of different diameters and the standard slope required under different drainage conditions. The minimum slope of municipal drainage pipes shall not be less than 0.5%. This slope setting can help the pipe avoid the sedimentation of easy sediment when the water flow rate is reasonable, but for pipes with low flow rate, this slope design cannot avoid the occurrence of dirt accumulation, and will eventually lead to sedimentation and blockage of the drain pipe.

[0003] In order to solve this technical problem, the utility model patent with the authorization announcement number CN206396883U discloses a drainage pipe disturbance cleaning structure, including an existing pipeline, a modified or newly built sewage well, a disturbance device, a sludge pump suction port, an automatic valve, an existing sewage well, and a sludge pump. The modified or newly built sewage well is connected to several existing sewage wells one by one through several existing pipelines. A disturbance device is provided at the bottom of the modified or newly built sewage well. The sludge pump suction port is provided at the bottom of the well, opposite to the disturbance device. The sludge pump suction port extends upward through a pipeline to the sludge pump to discharge sewage into the existing sewage well. The disturbance device at the bottom of the well is linked to the rotation stop of the sludge pump. This flow meter installation structure is mainly suitable for flow monitoring nodes with smaller pipe diameters. However, the inner diameter of nodes such as the inflow pipe of the total pump station in the centralized underground drainage system is relatively large, and the installation method of the insertion flow meter is not suitable. Although the drainage pipe disturbance cleaning structure can reduce the sludge accumulated in the pipes and sewage wells to a certain extent, its structure is complex and requires the use of sludge pumps and relays. Its daily energy consumption is high and its maintenance cost is also high, so it is not suitable for large-scale promotion and use. Summary of the invention

[0004] The purpose of this utility model is to develop a sewage pipe desilting device with low energy consumption and low maintenance cost for daily use, which is suitable for large-scale promotion and use. The specific technical scheme is as follows:

[0005] The utility model provides a sewage pipe hydraulic cleaning device, which is arranged between sewage wells on the sewage pipeline, and specifically comprises an inspection well body, a sewage inlet is arranged on one side of the inspection well body, and a sewage outlet is arranged on the other side of the inspection well body, the sewage inlet is higher than the sewage outlet, an axle pin mounting platform is arranged at the front end of the sewage outlet, and a buoyancy switch cover is hingedly connected to the cover through an axle pin, the buoyancy switch cover comprises a cover body, a connecting crankshaft and a float; an axle pin through hole is arranged in the middle of the connecting crankshaft, and the cover body is hingedly connected to the axle pin through the axle pin through hole; the cover body covers or releases the sewage outlet under the drive of the connecting crankshaft.

[0006] Optionally, the axle pin mounting platform is fixedly connected to a platform cover plate by screws, the platform cover plate is provided with a sewage pipe through hole, an axle pin is fixedly provided on one side of the sewage pipe through hole, and a cover plate stopper is provided on the side opposite to the axle pin of the sewage pipe through hole.

[0007] Optionally, the cover plate body is circular, and the diameter of the cover plate body is larger than the diameter of the sewage pipe through hole, and the cover plate stopper is an arc-shaped structure.

[0008] Optionally, the bottom wall of the inspection well body is provided with a sludge settling slope to form a sludge sedimentation cavity.

[0009] Optionally, the connecting crankshaft includes a cover plate connecting arm and a float connecting arm, and the free ends of the cover plate connecting arm and the float connecting arm are both provided with axle pin through holes, and the cover plate connecting arm and the float connecting arm are welded and fixedly connected after the angle is set.

[0010] Optionally, the buoyancy switch cover is made of stainless steel.

[0011] The beneficial effects of the utility model are:

[0012] During the use of the sewage pipe hydraulic cleaning device provided in this embodiment, since the gravity torque of the float is greater than the gravity torque of the cover body, the float pries the cover body through the connected crankshaft with the shaft pin as the fulcrum and rotates to the front of the sewage outlet, and plays the role of closing the sewage outlet. At the same time, sewage flows into the inspection well body from the sewage inlet. Since the sewage outlet is closed by the cover body, the sewage level continues to increase with the continuous inflow of sewage. When the sewage level increases to the point where the buoyancy torque of the sewage acting on the float is greater than the difference between the gravity torque of the float and the gravity torque of the cover body, the float is lifted by the buoyancy torque and rotates the cover body downward with the shaft pin as the fulcrum through the connected crankshaft. The cover body leaves the front of the sewage outlet, and the sewage outlet is opened, that is, the cover body and the outlet are released from the cover, and the sewage in the inspection well body flows out from the sewage outlet. When the sewage level in the inspection well body drops to the point where the buoyancy moment of the float is less than the difference between the gravity moment of the float and the gravity moment of the cover plate body, the float again rotates the cover plate body to the front of the sewage outlet with the shaft pin as the fulcrum through the connected crankshaft to close the sewage outlet. The sewage outlet can be opened and closed by this cleaning device, and due to the water storage effect of the inspection well body, a pulse-type flushing water flow is released to the sewage pipe at the rear end of the sewage outlet, thereby playing a hydraulic cleaning role for this section of the sewage pipe. This cleaning device uses the gravity of the float and the buoyancy of the sewage as the power of the buoyancy switch cover plate, and provides a pulse-type flushing water flow for the sewage pipe at the rear section of the sewage outlet by opening and closing the buoyancy switch cover plate, so as to clean the sewage pipe while discharging sewage. This cleaning device does not require external energy supply, and can truly achieve low energy consumption; and this cleaning device has a simple structure and low maintenance cost, and is suitable for large-scale promotion and use.

[0013] At the same time, the integrated disassembly and assembly of the buoyancy switch cover can be achieved through the platform cover and the axle pin installation platform, which is also more convenient in subsequent repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a sewage pipe hydraulic cleaning device according to an embodiment of the utility model;

[0015] Figure 2 A cross-sectional view of a sewage pipe hydraulic cleaning device according to an embodiment of the utility model Figure 1 ;

[0016] Figure 3 A cross-sectional view of a sewage pipe hydraulic cleaning device according to an embodiment of the utility model Figure 2 ;

[0017] Figure 4 This is a schematic diagram of the structure of the buoyancy switch cover plate of the sewage pipe hydraulic cleaning device according to an embodiment of the utility model;

[0018] Figure 5This is an exploded view of the parts of the buoyancy switch cover of the sewage pipe hydraulic cleaning device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following describes the implementation of the present invention through specific examples and in combination with the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0020] like Figures 1 to 5 As shown, an embodiment of the utility model provides a sewage pipe hydraulic cleaning device (hereinafter referred to as the present cleaning device), including an inspection well body 01, a sewage inlet 012 is arranged on one side of the inspection well body 01, and a sewage outlet 013 is arranged on the other side of the inspection well body 01, the sewage inlet 012 is higher than the sewage outlet 013, a shaft pin mounting platform 014 is arranged at the front end of the sewage outlet 013, and a buoyancy switch cover plate 03 is hingedly connected to the buoyancy switch cover plate 03 through a shaft pin 015, the buoyancy switch cover plate 03 includes a cover plate body 031, a connecting crankshaft 032 and a float 033; a shaft pin through hole 034 is arranged in the middle part of the connecting crankshaft 032, and is hingedly connected to the shaft pin 015 through the shaft pin through hole 034; the cover plate body 031 is covered or uncovered with the sewage outlet 013 under the drive of the connecting crankshaft 032.

[0021] As described above, the sewage pipe hydraulic cleaning device of the embodiment of the utility model serves as a substitute for the conventional sewage pipe inspection well, and is connected to the sewage pipe at the upper section of the observation node through the sewage inlet, and is connected to the sewage pipe at the lower section of the observation node through the sewage outlet, and then connected to the sewage pipe system. Since the municipal sewage pipe itself is provided with a slope, the sewage inlet is higher than the sewage outlet, which can help the cleaning device to be better connected to the sewage pipe system. During use, since the gravity torque of the float is greater than the gravity torque of the cover body, the float pries the cover body with the shaft pin as the fulcrum through the connected crankshaft to rotate to the front of the sewage outlet, and plays the role of closing the sewage outlet. At the same time, the sewage flows into the inspection well body from the sewage inlet. Since the sewage outlet is closed by the cover body, the sewage level continues to rise with the continuous inflow of sewage. When the sewage level rises to the point where the buoyancy moment of the sewage acting on the float is greater than the difference between the gravity moment of the float and the gravity moment of the cover plate body, the float is lifted by the buoyancy moment and rotates the cover plate body downward with the shaft pin as the fulcrum through the connected crankshaft. The cover plate body leaves the front of the sewage outlet, that is, the cover plate body is released from the outlet, the sewage outlet is opened, and the sewage in the inspection well body flows out from the sewage outlet (see Figure 3, after the cover body leaves the front of the sewage outlet, the mark number of the cover body is 031', the mark number of the float is 033', and they are shown with dotted lines to distinguish them). When the sewage liquid level in the inspection well body is reduced to the point where the buoyancy moment of the float is less than the difference between the gravity moment of the float and the gravity moment of the cover body, the float again rotates the cover body to the front of the sewage outlet with the shaft pin as the fulcrum through the connected crankshaft to close the sewage outlet. The cleaning device can realize the opening and closing cycle of the sewage outlet, and due to the water storage effect of the inspection well body, a pulse-type flushing water flow is released to the sewage pipe at the rear end of the sewage outlet, thereby playing a role in hydraulic cleaning of this section of the sewage pipe. The cleaning device uses the gravity of the float and the buoyancy of the sewage as the power of the buoyancy switch cover, and provides a pulse-type flushing water flow for the sewage pipe at the rear section of the sewage outlet by opening and closing the buoyancy switch cover, so as to realize the cleaning of the sewage pipe while discharging sewage. The cleaning device does not require external energy supply and can truly achieve low energy consumption; and the cleaning device has a simple structure and low maintenance cost, and is suitable for promotion and use in large atmospheres.

[0022] It is worth noting that, in order to ensure safety, a manhole cover that can be closed and opened is provided above the observation port 021 of the inspection well body 01. This is a common technical means in the industry, so the manhole cover is not described in detail here, and the structure is not shown. As mentioned above, the inspection well body can be an adjustment of an existing inspection well that has been built, or it can be a newly built inspection well.

[0023] In one embodiment, the axle pin installation platform 014 is fixedly connected to the platform cover plate 016 by screws (not shown), and the platform cover plate 016 is provided with a sewage pipe through hole 017, and an axle pin 015 is fixedly provided on one side of the sewage pipe through hole 017, and a cover plate stopper 018 is provided on the side opposite to the axle pin of the sewage pipe through hole 017. The platform cover plate and the axle pin installation platform can realize the integrated disassembly and assembly of the buoyancy switch cover plate, which is also more convenient in subsequent repair and maintenance.

[0024] In one embodiment, the cover plate body 031 is circular, and the diameter of the cover plate body 031 is larger than the diameter of the sewage pipe through hole 017, and the cover plate stopper 018 is an arc-shaped structure. The arc-shaped cover plate stopper can limit the cover plate body to prevent the cover plate body from exceeding the sewage pipe through hole when covering, resulting in the cover plate body not covering tightly and forming a leaking gap.

[0025] In one embodiment, the bottom wall of the inspection well body 01 is provided with a sludge settling slope 020, and a sludge deposition chamber 019 is formed. The sludge settling slope helps the sludge to be quickly concentrated in the sludge deposition chamber area after settling, which facilitates the dredging work in the subsequent maintenance process. At the same time, the settled sludge is not easy to affect the opening and closing of the buoyancy switch cover.

[0026] In one embodiment, the connecting crankshaft 032 includes a cover plate connecting arm 032-1 and a float connecting arm 032-2, and the free ends of the cover plate connecting arm 032-1 and the float connecting arm 032-2 are both provided with an axle pin through hole 034, and the cover plate connecting arm 032-1 and the float connecting arm 032-2 are stacked and welded and fixedly connected through the axle pin through hole 034 after setting the angle between them. This setting can adjust the threshold value of the opening and closing of the buoyancy switch cover plate (the height of the float in the closed state) according to the flow rate at the node of the sewage pipe. For example: when the flow rate of the sewage pipe is small, the height of the float is increased to make the flushing force of the pulse water flow greater; when the flow rate of the sewage pipe is large, the height of the float is lowered to ensure that the inspection well body can be emptied quickly to prevent the upper section of the sewage inlet of the sewage pipe from being blocked.

[0027] In one embodiment, the buoyancy switch cover plate 03 is made of stainless steel. The buoyancy switch cover plate made of stainless steel is not easily corroded by sewage, which can increase the durability of the cleaning device and reduce the subsequent maintenance cost.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A sewage pipe hydraulic cleaning device, comprising an inspection well body, characterized in that: A sewage inlet is arranged on one side of the inspection well body, and a sewage outlet is arranged on the other side of the inspection well body. The sewage inlet is higher than the sewage outlet. An axle pin mounting platform is arranged at the front end of the sewage outlet, and the buoyancy switch cover is hingedly connected to the cover through an axle pin. The buoyancy switch cover includes a cover body, which is connected to a crankshaft and a float; an axle pin through hole is arranged in the middle of the connecting crankshaft, and is hingedly connected to the axle pin through the axle pin through hole; the cover body is covered or uncovered with the sewage outlet under the drive of the crankshaft; the axle pin mounting platform is fixedly connected to the platform cover by screws, and the platform cover is provided with a sewage pipe through hole, an axle pin is fixedly arranged on one side of the sewage pipe through hole, and a cover block is arranged on the side opposite to the axle pin of the sewage pipe through hole.

2. The sewage pipe hydraulic cleaning device according to claim 1, characterized in that: The cover plate body is circular, and the diameter of the cover plate body is larger than the diameter of the sewage pipe through hole, and the cover plate stopper is an arc-shaped structure.

3. The sewage pipe hydraulic cleaning device according to claim 1, characterized in that: The bottom wall of the inspection well body is provided with a sludge settling slope to form a sludge deposition cavity.

4. The sewage pipe hydraulic cleaning device according to claim 1, characterized in that: The connecting crankshaft comprises a cover plate connecting arm and a float connecting arm, the free ends of the cover plate connecting arm and the float connecting arm are both provided with axle pin through holes, and the cover plate connecting arm and the float connecting arm are welded and fixedly connected after the included angle is set.

5. The sewage pipe hydraulic cleaning device according to claim 1, characterized in that: The buoyancy switch cover plate is made of stainless steel.

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