Flood drainage pump station and construction method thereof

Abstract

The application relates to a drainage pump station and a construction method thereof, and belongs to the technical field of water conservancy projects. The drainage pump station comprises a pump house and a drainage pump. A partition layer plate is vertically arranged in the pump house. The partition layer plate divides the space in the pump house into a pump chamber and a water chamber. The pump chamber and the water chamber are communicated at the top of the space in the pump house. The drainage pump is arranged at the bottom of the pump chamber. The water inlet pipe of the drainage pump is sealed through the partition layer plate and located at the bottom of the water chamber. The water outlet pipe of the drainage pump is sealed through the pump house. A water inlet gap for communicating the water chamber and the outside is arranged at the bottom of the pump house. The water inlet gap is located below the ground. The water inlet gap is filled with a gravel layer formed by gravel. A pressure stabilizing port for communicating the water chamber and the outside is further arranged on the pump house. The height of the pressure stabilizing port is lower than the top of the partition layer plate. The application has the effect of directly draining water from the ground.

Description

Technical Field

[0001] This application relates to the field of water conservancy engineering, and in particular to a drainage pumping station and its construction method. Background Technology

[0002] During the rainy season, flood control and drainage are key concerns for government departments. In some low-lying areas, coupled with the lack of power in pipelines to transport rainwater and sewage, waterlogging easily occurs, leading to flooding of roads and residential areas, and even backflow of rainwater and sewage, causing inconvenience and economic losses. With the implementation of disaster prevention and mitigation projects, including the construction of sluice gates, dikes, and drainage pumping stations, urban flood control and drainage capabilities have been improved. Drainage pumping stations, as a type of booster unit, are designed to overcome the problem of insufficient drainage power caused by elevation differences.

[0003] Existing drainage pumping stations typically consist of a pump house for drainage pumps. The pump house has an inlet pipe and an outlet pipe. The inlet pipe sends water from low-lying areas into the pump house, and the drainage pumps increase the power of the water sent from the inlet pipe and continue to discharge it through the outlet pipe.

[0004] The aforementioned drainage pumping station increases the potential energy of water in low-lying areas through the inlet pipe before sending it away. However, the current drainage pumping station cannot drain the rainwater in the original location. It is very suitable for long-distance drainage, but for short-distance or long-distance drainage, it is more convenient to directly pump out external water. Therefore, a more suitable drainage pumping station needs to be designed. Summary of the Invention

[0005] Firstly, in order to directly drain water from the area, this application provides a drainage pumping station.

[0006] The drainage pumping station provided in this application adopts the following technical solution:

[0007] A drainage pumping station includes a pump house and a drainage pump. A vertical partition plate is installed inside the pump house, dividing the space into a pump chamber and a water chamber. The pump chamber and the water chamber are connected at the top of the pump house. The drainage pump is located at the bottom of the pump chamber. The inlet pipe of the drainage pump is sealed through the partition plate and located at the bottom of the water chamber. The outlet pipe of the drainage pump is sealed through the pump house. An inlet opening connecting the water chamber and the outside is provided at the bottom of the pump house. The inlet opening is located below ground level and filled with a layer of gravel. A pressure stabilizing port connecting the water chamber and the outside is also provided on the pump house, with the height of the pressure stabilizing port lower than the top of the partition plate.

[0008] By adopting the above technical solution, the pump house not only supplies water for the installation of drainage pumps, but also filters the incoming water. Water from the pump house location is filtered through a gravel layer before entering the pump house, thus directly lifting and discharging the local water, which is more direct and effective. The pump house is divided into a pump chamber and a water chamber. The pump chamber houses the drainage pump, while the water chamber supplies water. The drainage pump draws water from the water chamber. The water entering the water chamber is filtered through the gravel layer, making the drainage pump less prone to clogging and ensuring smooth drainage. The inlet is located underground, facilitating the installation of the gravel layer. The surface is not prone to protruding gravel, and the soil itself has a filtering function. The pressure stabilizing port on the pump house allows water to enter the water chamber smoothly. As the water level rises, because the height of the pressure stabilizing port is lower than the height of the partition plate, the water level will not exceed the partition plate to enter the pump chamber. This ensures smooth drainage while preventing water from directly contacting the drainage pump, maintaining a good working environment for the drainage pump. The connection between the top of the water chamber and the top of the pump chamber also ensures that there is enough air in the pump house. Even if the pressure stabilizing port is suddenly blocked when the external water pressure is high, water can still be forced into the pump house to complete the drainage.

[0009] Optionally, the pressure stabilizing port is located at the opening of the water chamber as an inner port. The inner port is provided with a high-water sealing component, which includes an inner sealing plate and an inner float. The inner sealing plate is hinged to the lower side of the inner port, and the inner float is disposed on the inner sealing plate. When the inner sealing plate abuts and closes the inner port, the inner float is located on the side of the inner sealing plate away from the inner port. An inner sealing structure is provided between the inner sealing plate and the inner port.

[0010] By adopting the above technical solution, a high-water sealing component is installed at the inner opening of the pressure stabilizing port. When the external water level is too high, the water level in the water chamber reaches the pressure stabilizing port. The inner float on the inner sealing plate floats up in the water and abuts against the inner opening of the pressure stabilizing port to achieve sealing. Compared with preventing excessive water from entering through internal air pressure, the presence of the high-water sealing component provides a better sealing effect and better ensures that water will not directly affect the drainage pump. At the same time, when the drainage is fast enough, but the filtration and water intake speed of the gravel layer cannot keep up or the gravel layer is blocked, the water level in the water chamber drops, and the inner opening of the pressure stabilizing pipe is no longer sealed by the inner sealing plate. Water enters the water chamber directly without filtration for flood discharge. In the event of a large flood, this provides a rapid response to emergency flood discharge. Mainly, after sealing, the water mainly enters from the gravel layer and is filtered. Even when the external water level exceeds the pressure stabilizing port, the water level in the water chamber is always lower than when there is no high-water sealing component, even if water is forced in.

[0011] Optionally, the opening of the pressure stabilizing port outside the water chamber is designated as an external opening. The external opening is equipped with a floating opening assembly, which includes an outer sealing plate and an outer float. The outer sealing plate is hinged to the upper side of the external opening, and the outer float is disposed on the outer sealing plate. When the outer sealing plate abuts and closes the external opening, the outer float is located on the side of the outer sealing plate away from the external opening. A flexible sealing block is disposed on the side of the outer sealing plate away from the outer float. The flexible sealing block is arc-shaped and floats in the water.

[0012] By adopting the above technical solution, and by setting a floating opening component at the outer opening of the pressure stabilizing port, on the one hand, when water enters the water chamber, it does not affect the gas in the water chamber from being discharged through the pressure stabilizing port, thus preventing water from entering the water chamber. On the other hand, it prevents birds and other animals from entering the water chamber under normal circumstances, ensuring that foreign objects do not easily enter the water chamber and affect the work during flood discharge. When the water level is higher than the outer opening of the pressure stabilizing port, the outer opening of the pressure stabilizing port is fully opened to release water. At the same time, when the internal water is pumped out quickly, or when the external water level is lower than the outer opening of the pressure stabilizing port, the outer sealing plate can seal the outer opening with a flexible sealing block. In particular, when the internal air pressure drops rapidly, the internal air pressure drop accelerates the intake of water from the outside. Especially when the gravel layer is blocked, the negative pressure can be used to suck open the blockage of the gravel layer, achieving the purpose of self-cleaning.

[0013] Optionally, the pump house is provided with an inclined pipe, the pressure stabilizing port is a channel inside the inclined pipe, one end of the inclined pipe is located inside the water chamber, the other end is located outside the water chamber, and the end of the inclined pipe outside the water chamber is higher than the end of the inclined pipe inside the water chamber. The inner port is located at the opening of the inclined pipe inside the water chamber, and the outer port is the opening of the inclined pipe outside the water chamber. The inner port and the outer port are perpendicular to the axis of the inclined pipe.

[0014] By adopting the above technical solution, an inclined pipe is installed on the pump house to form a pressure stabilizing port. Due to the inclined setting of the inclined pipe, the height of the inner port is lower than that of the outer port. Therefore, the inner port closes faster than the outer port opens. At the same time, during the exhaust process, there will be no water flowing into the outer port. Especially when the water level suddenly reaches the height of the inner port, but the water flow through the gravel layer has not yet raised the water level in the water chamber to the same height, the way water enters the water chamber is still mainly through filtration. There will be no situation where water flows into the water chamber directly through the pressure stabilizing port, which ensures the effectiveness of the filtration process as much as possible. In particular, as long as the water level is not higher than the outer port, an internal seal can be formed. Even if the gravel layer is blocked, it can carry out a self-cleaning process, ensuring the longevity of filtration and drainage. At the same time, the water level does not exceed the outer port, and the external water flooding is not so severe that it is necessary to damage the drainage pump in the pumping station for immediate drainage. This achieves multiple benefits.

[0015] Optionally, the pump chamber is provided with a partition step plate, which divides the pump chamber into upper and lower parts. The pump chamber is also provided with rescue devices such as lifebuoys and air valves, located above the partition step plate. The drainage pump is located below the partition step plate. The partition step plate has a maintenance port with an opening and closing cover. The top of the pump chamber also has a maintenance opening for entering the pump chamber, and a normally closed maintenance opening and closing component is provided at the maintenance opening.

[0016] By adopting the above technical solution, opening maintenance openings and installing maintenance opening and closing components, the pump room is normally kept internally sealed. When maintenance is needed, the pump room can be accessed through the maintenance opening. Since the water chamber and pump room are not completely separated, only one maintenance opening is required. The structure inside the water chamber can also be maintained by crossing the partition plate. The pump room is equipped with a partition step plate, which provides a stepping area for personnel and also forms a second layer of protection for the water pump. The space above the partition step plate can be used to place rescue devices, facilitating self-rescue in the event of flooding, such as self-rescue after maintenance of the pump room, or self-rescue when people are trapped outside and need to find rescue items. The pump room is fully utilized. At the same time, due to the presence of the high-water sealing component, the water level and air pressure inside the water chamber can still be partially offset by the buoyancy of the internal float when the external water level is too high, which facilitates maintenance. At the same time, the internal air pressure is lower than when there is no high-water sealing component, which is beneficial to maintenance personnel. In particular, it offsets the situation where the water level is already higher than the external opening when maintenance personnel enter, preventing water from directly rushing into the pump room.

[0017] Optionally, a maintenance component is also provided. A ring-shaped connecting protrusion is provided on the top of the pump room outside the maintenance opening and closing component. The maintenance component is in the shape of a round tube, with one end cooperating with the connecting protrusion and the other end provided with an opening and closing cover.

[0018] By adopting the above technical solution and the matching maintenance parts, when the water level is higher than the top of the pump house and the pump house drainage function fails and needs maintenance, maintenance personnel can be sent into the pump house, install the maintenance parts on the top, pump out the internal water, enter the maintenance parts, seal them by opening and closing the cover, and then open the maintenance opening and closing components to enter the interior for maintenance. This ensures that the interior is sealed when entering, so that even if the water level is too high, water will not enter the pump house excessively under high water pressure.

[0019] Optionally, the maintenance opening and closing assembly includes a lifting cover, a lifting rod, and a locking rod. The lower end of the lifting rod is threaded into the pump room, and the lifting cover is threaded onto the lifting rod. The lifting cover closes the maintenance opening at the top of the pump room. The top of the lifting rod is provided with a rotating component to drive the lifting rod to rotate. The lifting rod and the lifting cover rise or fall simultaneously. One end of the locking rod is fixed to the lifting cover, and the other end slides against the inner wall of the pump room.

[0020] By adopting the above technical solution, the lifting cover is opened by moving downwards into the pump chamber, which allows for smaller maintenance parts and eliminates the need to design a space for opening the lifting cover, facilitating maintenance. The rotation of the lifting cover is locked by a locking rod, so that the lifting cover moves downwards synchronously on the lifting rod as the lifting rod rotates, making the operation more convenient and faster. It can be moved downwards quickly, reducing the number of rotations required for the lifting rod. The lifting rod also moves downwards together, making it less likely to obstruct the entry of maintenance personnel. This achieves multiple benefits and further reduces space requirements.

[0021] Optionally, the pump house is also equipped with a water distribution pipe connected to the bottom of the water chamber. The water distribution pipe is connected to the urban drainage pipeline. A water distribution sealing component is provided at the opening of the water distribution pipe in the water chamber. The water distribution sealing component includes a water distribution sealing plate and a sealing spring. There are multiple sealing springs, which are arranged at equal angular intervals around the circumference of the water distribution sealing plate. One end of the sealing spring is connected to the water distribution sealing plate and the other end is connected to the inner wall of the water chamber. The water distribution sealing plate is pulled by the sealing spring to close the opening of the water distribution pipe.

[0022] By adopting the above technical solution and setting up a water distribution pipe, the pumping station can not only carry out on-site drainage, but also drain water from other low-lying areas transported by the water distribution pipe. At the same time, when the water pressure of the on-site water is too high to be drained in time, on-site drainage is carried out first. When the on-site water is light, external drainage can be carried out through the water distribution pipe. When drainage is not urgent, water can also be transferred and evenly distributed by draining water from the pumping station, thereby alleviating the waterlogging situation in other areas.

[0023] Secondly, in order to construct the aforementioned drainage pumping station, this application provides a construction method for the drainage pumping station, employing the following technical solution:

[0024] A construction method for a drainage pumping station, characterized by comprising the following steps:

[0025] S1: Excavate the foundation pit at the predetermined location;

[0026] S2: Pour a concrete cushion layer at the bottom of the foundation pit;

[0027] S3: The main body of the cast-in-place pump house;

[0028] S4: Fill with a layer of crushed stone and backfill with soil;

[0029] S5: Install rescue equipment inside the pump room.

[0030] Optionally, step S3 includes S3.1: filling part of the crushed stone at the water inlet gap; S3.2: building a construction template for pouring the bottom of the pump house, and during pouring, first pouring a concrete slab on top of the crushed stone layer and fixing it to the upper layer of the crushed stone layer.

[0031] By adopting the above technical solution, the top of the crushed stone layer is formed into a concrete slab by pouring concrete. On the one hand, this facilitates the subsequent pouring of the pump room. On the other hand, after the upper part of the crushed stone layer is fixed, the movement of the lower crushed stone is controlled by the upper crushed stone, and the middle crushed stone is locked in place. After they are locked in place, the movement of the crushed stone in the later stage is reduced.

[0032] In summary, the pump house not only houses the installation of water supply and drainage pumps, but also serves as a filter for incoming water. Water from the pump house location is filtered through a gravel layer before entering the pump house, allowing for direct and effective drainage. By dividing the pump house into a pump chamber and a water chamber, the pump chamber houses the drainage pump, while the water chamber supplies water. The drainage pump draws water from the water chamber, and the water entering the water chamber is filtered through the gravel layer, preventing the drainage pump from becoming clogged and ensuring smooth drainage. The inlet is located underground, facilitating the installation of the gravel layer, which is essential as the surface cannot easily become clogged. The soil is designed to easily expel gravel, and it also has a filtering function. The pressure stabilizing inlet on the pump house allows water to smoothly enter the water chamber. As the water level rises, because the height of the pressure stabilizing inlet is lower than the height of the partition plate, the water level will not exceed the partition plate and enter the pump house. This ensures smooth drainage while preventing water from directly contacting the drainage pump, thus maintaining a good working environment for the drainage pump. The connection between the top of the water chamber and the top of the pump house also ensures that there is enough air in the pump house. Even if the pressure stabilizing inlet is suddenly blocked when the external water pressure is high, water can still be forced into the pump house to complete the drainage. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the pump station structure in the embodiments of this application;

[0034] Figure 2 This is a schematic diagram of the pump room structure without the top in the embodiments of this application;

[0035] Figure 3 This is a cross-sectional view of the pump house in an embodiment of this application;

[0036] Figure 4 This is a cross-sectional view of the inclined tube in an embodiment of this application;

[0037] Figure 5 This is a cross-sectional view of the water distribution pipe in the embodiments of this application;

[0038] Figure 6 This is a schematic diagram of the opening and closing cover in an embodiment of this application;

[0039] Figure 7 This is a schematic diagram of the maintenance opening and closing component in an embodiment of this application;

[0040] Figure 8 This is a structural schematic diagram of the repair component in the embodiments of this application.

[0041] Explanation of reference numerals in the attached drawings: 1. Pump room; 11. Partition plate; 12. Water chamber; 13. Pump room; 14. Partition plate; 15. Water inlet; 16. Maintenance port; 17. Opening / closing cover; 171. Opening / closing tooth; 172. Rotary opening / closing component; 18. Maintenance opening; 19. Maintenance opening / closing assembly; 191. Lifting cover; 192. Lifting rod; 193. Locking rod; 194. Mounting column; 195. Rotating column; 196. Sealing block; 197. Rotating component; 2. Drainage pump; 31. Concrete foundation; 32. Crushed stone layer; 4. Drainage... 5. Water pipe; 51. Inclined pipe; 52. Pressure stabilizing port; 53. Inner port; 54. Outer port; 6. High water sealing assembly; 65. Inner sealing plate; 66. Inner float; 67. Inner hinge block; 68. Inner mating block; 79. Sealing lip; 70. Floating opening assembly; 71. Outer sealing plate; 72. Outer float; 73. Outer hinge block; 74. Outer mating block; 75. Flexible sealing block; 8. Water distribution pipe; 81. Water distribution sealing plate; 82. Guide strip; 83. Sealing tension spring; 9. Maintenance parts; 94. Sealing layer; 10. Connecting convex ring; 105. Climbing ladder. Implementation

[0042] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0043] This application discloses a drainage pumping station.

[0044] Reference Figure 1 and Figure 2A drainage pumping station includes a pump house 1, a drainage pump 2 installed inside the pump house 1, and a maintenance kit 9 ​​that allows maintenance personnel to enter the pump house 1 when floodwater overflows its top. Specifically, the pump house 1 is generally square and hollow inside. The bottom of the pump house 1 is a cast-in-place concrete base 31 with an area larger than the floor area of ​​the pump house 1 and covering the entire bottom of the pump house 1. A vertical partition plate 11 is installed inside the pump house 1. The partition plate 11 is located in the middle along the length of the pump house 1 and divides it into left and right parts. The partition plate 11 is integral with the bottom wall of the pump house 1 and its sides are also integrated with the bottom wall. The inner wall of the pump room 1 is integral. The partition plate 11 divides the pump room 1 into two spaces, the left and right, which are respectively set as water chamber 12 and pump room 13. The pump room 13 and water chamber 12 are connected at the top of the space inside the pump room 1. The pump room 13 is provided with a partition step plate 14. The partition plate 11 is horizontally located in the middle of the height direction of the pump room 13. The partition step plate 14 divides the pump room 13 into upper and lower parts. The drainage pump 2 is installed at the bottom of the pump room 13. The bottom of the pump room 13 is connected to the bottom of the water chamber 12 through a water inlet pipe. The water inlet pipe is used by the drainage pump 2 to draw water from the water chamber 12.

[0045] The drainage pipe 4 is cast and fixed on the partition plate 11 to achieve a sealed penetration.

[0046] Reference Figure 2 and Figure 3 The pump house 1 has a water inlet 15 at the bottom of the water chamber 12 on the side away from the partition plate 11. The water inlet 15 extends along the width of the pump house 1 in a long strip shape, and the bottom of the pump house 1 is located below the ground. Correspondingly, the water inlet 15 of the pump house 1 is located below the ground. The water inlet 15 is filled with a gravel layer 32 formed by crushed stones. The gravel layer 32 is laid on top of the concrete pad 31, and part of the gravel layer 32 is located at the bottom of the water chamber 12 and part of it is located outside the water chamber 12. The water inlet pipe of the drainage pump 2 is located at one end of the water chamber 12 above the gravel layer 32, that is, the water inlet pipe of the drainage pump 2 is higher than the water inlet 15.

[0047] Specifically, the bottom layer of the crushed stone layer 32 is cast and fixed to the concrete cushion layer 31, while the pump house 1 has a concrete slab extending horizontally from the upper side wall of the inlet opening towards the inside and outside of the water chamber 12. The concrete slab is cast and fixed to the top layer of the crushed stone layer 32, thereby restricting the movement of the crushed stone layer 32 and maintaining the effectiveness of the crushed stone layer 32.

[0048] An inclined pipe 5 is cast and fixed on the side wall of the water chamber 12 away from the partition plate 11 in the pump house 1. The end of the inclined pipe 5 located outside the pump house 1 is inclined upward, that is, the end of the inclined pipe 5 located inside the water chamber 12 is lower than the end located outside the pump house 1. The hole inside the inclined pipe 5 is set as a pressure stabilizing port 51, which is used to connect the water chamber 12 and the outside of the pump house 1. The opening of the pressure stabilizing port 51 located in the water chamber 12 is set as an inner port 52, and the opening of the pressure stabilizing port 51 located outside the water chamber 12 is set as an outer port 53. The inner port 52 and the outer port 53 are perpendicular to the axis of the inclined pipe 5. The height of the outer port 53 is lower than the top of the partition plate 11, and the height of the inner port 53 is higher than the inlet pipe of the drainage pump 2. The inner port 52 is equipped with a high water sealing component 6, and the outer port 53 is equipped with a floating opening component 7.

[0049] Reference Figure 1 and Figure 4 The high-water sealing assembly 6 includes an inner sealing plate 61 and an inner float 62. An inner hinge block 63 for hinged connection of the inner sealing plate 61 is provided on the lower side of the inner opening 52 of the inclined pipe 5. An inner mating block 64 for hinged engagement is also extended from the inner sealing plate 61. The inner float 62 is fixed to one side of the inner sealing plate 61. When the inner sealing plate 61 abuts against and closes the inner opening 52, the inner float 62 is located on the side of the inner sealing plate 61 facing away from the inner opening 52, while the inner mating block 64 faces the sidewall of the inclined pipe 5 and is away from the inner sealing plate 61. The inner hinge block 63 has a curved surface, and the side wall away from the inner inclined tube 5 is also a curved surface, so it will not hinder the normal rotation of the inner sealing plate 61. Moreover, the inner sealing plate 61 only has a 90-degree stroke when it opens the inner opening 52, so that the inner sealing plate 61 will not rotate in the opposite direction when it floats in the water and cannot close the inner opening 52. Here, the curved surface of the inner mating block 64 can also be extended to increase the rotation stroke of the inner sealing plate 61, but it is necessary to ensure that the downward flipping stroke limit of the inner sealing plate 61 does not reach the vertical state.

[0050] Meanwhile, an internal sealing structure is provided between the inner sealing plate 61 and the inner opening 52. Specifically, a sealing lip 65 is provided on the side of the inner sealing plate 61 away from the inner float 62. After the sealing lip 65 enters the inner opening 52, it is squeezed and sealed against the inner wall of the inclined tube 5.

[0051] Reference Figure 4The floating opening assembly 7 includes an outer sealing plate 71 and an outer float 72. The outer sealing plate 71 is hinged to the upper side of the outer opening 53. Specifically, the inclined tube 5 is provided with an outer hinge block 73 on the upper side of the outer opening 53 for hinged connection of the outer sealing plate 71, and the outer sealing plate 71 has an outer mating block 74 for hinged engagement. The outer float 72 is fixed to one side of the outer sealing plate 71. When the outer sealing plate 71 abuts against the closed outer opening 53, the outer float 72 is located on the side of the outer sealing plate 71 away from the outer opening 53, while the outer mating block 74 faces the side wall of the inclined tube 5 and is away from the outer sealing plate 71. One side of 1 is an arc surface, and the side wall of the outer hinge block 73 away from the outer inclined pipe 5 is also an arc surface, so it will not hinder the normal rotation of the outer sealing plate 71. Moreover, the stroke of the outer sealing plate 71 when opening the outer opening 53 is only 90 degrees, so that the outer sealing plate 71 will not continue to flip and no longer close the outer opening 53 when the water level drops after it floats in the water. Here, the arc surface of the outer mating block 74 can also be extended to increase the rotation stroke of the outer sealing plate 71, but it is necessary to ensure that the upper flip stroke limit of the outer sealing plate 71 does not reach the vertical state.

[0052] A flexible sealing block 75 is provided on the side of the outer sealing plate 71 away from the outer float 72. The flexible sealing block 75 is arc-shaped and floats in the water. When the outer sealing plate 71 closes the outer opening 53, the flexible sealing block 75 is embedded in the inclined tube 5 and abuts against the inner wall of the inclined tube 5. When the outer sealing is not subjected to external force and abuts against the inclined tube 5, the size of the flexible sealing block 75 near the outer sealing plate 71 is larger than the diameter of the outer opening 53, thus flexibly sealing. At the same time, the buoyancy of the outer sealing plate 71 is sufficient to overcome the resistance between the flexible sealing block 75 and the inner wall of the inclined tube 5, and complete the outer sealing plate 71 to detach.

[0053] Reference Figure 1 , Figure 2 and Figure 5Pump house 1 is also equipped with a water distribution pipe 8 connected to the bottom of water chamber 12. The water distribution pipe 8 is connected to the urban drainage pipeline. The water distribution pipe 8 and the inclined pipe 5 are located on different side walls of pump house 1. One end of the water distribution pipe 8 protrudes and is suspended inside water chamber 12. A water distribution sealing assembly is provided at one end of the water distribution pipe 8 inside water chamber 12. The water distribution sealing assembly includes a water distribution sealing plate 81 and a sealing spring 82. The water distribution sealing plate 81 is composed of two parts with different diameters at both ends. The end with the smaller diameter is inserted into the water distribution pipe 8, and the end with the larger diameter is larger than the outer diameter of the water distribution pipe 8 and abuts against the water distribution pipe 8 and is provided with a corresponding sealing structure. There are multiple sealing springs 82. The sealing spring 82 is arranged at equal angles around the water distribution sealing plate 81. One end of the sealing spring 82 is connected to the side of the water distribution sealing plate 81 facing the inner wall of the pump room 1, and the other end is connected to the inner wall of the pump room 1. The water distribution sealing plate 81 is pulled by the sealing spring 82 to close the opening of the water distribution pipe 8. At the same time, in order to maintain the cooperation between the water distribution sealing plate 81 and the water distribution pipe 8, a guide strip 811 is provided at the end of the water distribution sealing plate 81 with a smaller diameter extending into the water distribution pipe 8. In this embodiment, there are two guide strips 811, which are arranged at the top and bottom and located inside the water distribution pipe 8. At the same time, the length of the guide strip 811 is greater than the stroke of the sealing spring 82, so that the guide strip 811 is always located inside the water distribution pipe 8.

[0054] Reference Figure 2 and Figure 3 Inside the pump chamber 13, above the partition foot pedal, rescue devices such as lifebuoys and inflation valves are installed. These devices can be suspended from the inner wall of the pump chamber 13 or placed on the partition foot pedal. The partition foot pedal plate 14 has a maintenance opening 16 and an opening and closing cover 17. The top of the pump chamber 13 also has a maintenance opening 18 for entering the pump chamber 13, and a normally closed maintenance opening and closing component 19 is installed at the maintenance opening 18. Specifically, the diameter of the maintenance opening 16 and the maintenance opening 18 is greater than half the width of the pump room 1. The maintenance opening 16 and the maintenance opening 18 are each located on one side of the pump room 1 in the width direction, and their projections in the height direction of the pump room 1 overlap. This arrangement ensures that the maintenance opening 16 and the maintenance opening 18 do not interfere with each other, while also ensuring that the size of the maintenance opening 16 and the maintenance opening 18 is sufficient for personnel to enter and exit.

[0055] Reference Figure 3 and Figure 6The opening and closing cover 17 on the maintenance port 16 is hinged and has a protrusion on the side facing the maintenance port 16. The protrusion is smaller in diameter than the opening diameter of the maintenance port 16 and is provided on the protrusion. The opening and closing cover 17 has a rotatable opening and closing tooth 171. The opening and closing cover 17 has a gear transmission system inside. The side of the opening and closing cover 17 away from the maintenance port 16 has a steering wheel-shaped rotating opening and closing member 172. The rotation of the rotating opening and closing member 172 drives the gear inside the opening and closing cover 17 to rotate, which in turn drives the opening and closing tooth 171 to rotate. After the opening and closing tooth 171 rotates outward and abuts against the partition pedal, it restricts the opening and closing cover 17 from opening and ensures the sealing state after the opening and closing cover 17 is closed.

[0056] Reference Figure 1 , Figure 2 and Figure 7 The maintenance opening and closing assembly 19 includes a lifting cover 191, a lifting rod 192, and a locking rod 193. A mounting post 194 extending below the partition pedal is provided. The lower end of the lifting rod 192 is threaded into the mounting post 194. The lifting cover 191 is threaded onto the lifting rod 192, and the threads on the lower and upper parts of the lifting rod 192 rotate in opposite directions, allowing the lifting rod 192 and the lifting cover 191 to rise or fall simultaneously. The upper end of the lifting rod 192 is located outside the pump room 1, and a rotating post 195 is provided at the top of the lifting rod 192. The bottom of the rotating post 195 is cylindrical, and the top is a regular hexagonal prism. The diameter of the bottom of the rotating post 195 is smaller than the diameter of the lifting rod 192. 5. A sealing abutment block 196 is installed at the bottom thread. The lifting cover 191 is a stepped column with the smaller diameter part embedded in the maintenance opening 18. The larger diameter part of the lifting cover 191 is located in the pump chamber 13. When the lifting cover 191 abuts against the top wall of the pump chamber 13, the sealing abutment block 196 abuts against the lifting cover 191, thereby achieving the sealing of the maintenance opening 18 at the top of the pump chamber 1 by the lifting cover 191. The top of the rotating column 195 is fitted with a steering wheel-shaped rotating part 197 to drive the lifting rod 192 to rotate. One end of the locking rod 193 is integrated with the lifting cover 191, and the other end slides against the inner wall of the pump chamber 1. The engagement method is a slide rail slider engagement, thereby restricting the rotation of the lifting cover 191.

[0057] To facilitate personnel access to the pump room 13, a U-shaped steel climbing ladder 101 is cast and fixed on the inner wall of the pump room 13. The climbing ladder 101 separating the steps is set on the opposite inner wall.

[0058] The outlet pipe of the drainage pump 2 passes through the pump room 1 in a sealed manner. It can pass through the pump room 1 directly from the bottom side of the pump room 13, or it can pass through the partition step plate 14 vertically and then through the side wall or top wall of the pump room 13 and be fixed by pouring. The power line of the drainage pump 2 enters the pump room 1 through the top wall of the pump room 1.

[0059] Reference Figure 1 and Figure 8 A ring-shaped connecting protrusion 10 is provided on the top of the pump room 1 outside the maintenance opening and closing assembly 19. The maintenance component 9 is in the shape of a round tube, with one end cooperating with the connecting protrusion 10 and the other end provided with an opening and closing cover 17. The opening and closing cover 17 is set in the same way as the structure on the partition pedal plate. At the same time, the end of the maintenance component 9 that mates with the connecting protrusion 10 is a stepped hole. The stepped surface abuts against the connecting protrusion 10 and is provided with a sealing layer 91. Compared with the sealing layer being provided on the connecting protrusion 10, since the connecting protrusion 10 is exposed all year round, the maintenance component 9 is not easy to fail and is easy to replace.

[0060] To facilitate the opening and closing of pump room 1, a water level detector can be installed outside pump room 1 to directly detect the external water level. Compared to being installed inside water chamber 12, when the gravel layer 32 is blocked, a self-cleaning process can be initiated. Although it is safer for the water level detector to be inside water chamber 12, it is less likely to lose its function due to blockage outside.

[0061] It should be noted that the drainage pump 2 in this embodiment is a pump group consisting of multiple pumps connected in parallel to increase working capacity, and the front end includes a self-priming pump, which can be adapted to the self-cleaning process.

[0062] This application also discloses a construction method for a drainage pumping station.

[0063] A construction method for a drainage pumping station includes the following steps:

[0064] S1: Excavate the foundation pit at the predetermined location;

[0065] S2: A concrete cushion layer 31 is poured at the bottom of the foundation pit. During pouring, at the position of the crushed stone layer 32, the bottom of the crushed stone layer 32 is poured and fixed together with the concrete cushion layer 31.

[0066] S3: The main body of the cast-in-place pump house 1;

[0067] S3.1: Fill the 15 water inlet gaps with some gravel;

[0068] S3.2: Build a construction template for pouring the bottom of pump room 1, and pour a concrete slab on top of the crushed stone layer 32 first to fix it to the upper layer of the crushed stone layer 32.

[0069] S4: Fill with 32 layers of crushed stone and backfill with soil;

[0070] S5: Install rescue equipment, drainage pump 2, opening and closing cover 17 and maintenance opening and closing assembly 19 in pump room 1.

[0071] When pouring the main body of pump house 1, the top of pump house 1 is not poured first. The top of pump house 1 is poured and fixed together with the other parts of pump house 1 by a whole steel plate. The installation of maintenance opening and closing component 19 is completed first, and then the pouring and installation of the top of pump house 1 is carried out.

[0072] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drainage pumping station, characterized in that: The system includes a pump house (1) and a drainage pump (2). A vertical partition plate (11) is installed inside the pump house (1), which divides the space inside the pump house (1) into two parts: a pump chamber (13) and a water chamber (12). The pump chamber (13) and the water chamber (12) are connected at the top of the space inside the pump house (1). The drainage pump (2) is located at the bottom of the pump chamber (13), and the inlet pipe of the drainage pump (2) is sealed through the partition plate (11) and located in the water chamber (12). At the bottom, the outlet pipe of the drainage pump (2) passes through the pump house (1) sealed. The bottom of the pump house (1) is provided with a water inlet (15) connecting the water chamber (12) and the outside. The water inlet (15) is located below the ground. The water inlet (15) is filled with a gravel layer (32) formed by gravel. The pump house (1) is also provided with a pressure stabilizing port (51) connecting the water chamber (12) and the outside. The height of the pressure stabilizing port (51) is lower than the top of the partition plate (11). The pressure stabilizing port (51) is located at the opening of the water chamber (12) and is designated as an inner port (52). The inner port (52) is provided with a high water sealing component (6). The high water sealing component (6) includes an inner sealing plate (61) and an inner float (62). The inner sealing plate (61) is hinged to the lower side of the inner port (52). The inner float (62) is disposed on the inner sealing plate (61). When the inner sealing plate (61) abuts and closes the inner port (52), the inner float (62) is located on the side of the inner sealing plate (61) away from the inner port (52). An inner sealing structure is provided between the inner sealing plate (61) and the inner port (52). The opening of the pressure stabilizing port (51) outside the water chamber (12) is designated as an outer opening (53). The outer opening (53) is provided with a floating opening component (7). The floating opening component (7) includes an outer sealing plate (71) and an outer float (72). The outer sealing plate (71) is hinged to the upper side of the outer opening (53). The outer float (72) is disposed on the outer sealing plate (71). When the outer sealing plate (71) abuts and closes the outer opening (53), the outer float (72) is located on the side of the outer sealing plate (71) away from the outer opening (53). A flexible sealing block (75) is provided on the side of the outer sealing plate (71) away from the outer float (72). The flexible sealing block (75) is arc-shaped and floats in the water. The pump room (1) is provided with an inclined pipe (5), the pressure stabilizing port (51) is the channel inside the inclined pipe (5), one end of the inclined pipe (5) is located inside the water chamber (12), and the other end is located outside the water chamber (12). The end of the inclined pipe (5) located outside the water chamber (12) is higher than the end of the inclined pipe (5) located inside the water chamber (12). The inner port (52) is the opening of the inclined pipe (5) located inside the water chamber (12), and the outer port (53) is the opening of the inclined pipe (5) located outside the water chamber (12). The inner port (52) and the outer port (53) are perpendicular to the axis of the inclined pipe (5).

2. A drainage pumping station according to claim 1, characterized in that: The pump chamber (13) is provided with a partition step plate (14), which divides the pump chamber (13) into upper and lower parts. The pump chamber (13) is also provided with a life ring and an inflatable raft rescue device located above the partition step plate (14). The drainage pump (2) is located below the partition step plate (14). The partition step plate (14) is provided with a maintenance port (16) and an opening and closing cover (17). The top of the pump chamber (13) is also provided with a maintenance opening (18) for entering the pump chamber (13) and a normally closed maintenance opening and closing component (19) is provided at the maintenance opening (18).

3. A drainage pumping station according to claim 2, characterized in that: It is also equipped with a maintenance component (9). The top of the pump room (1) is provided with a ring-shaped connecting protrusion (10) outside the maintenance opening and closing component (19). The maintenance component (9) is in the shape of a round tube, with one end cooperating with the connecting protrusion (10) and the other end provided with an opening and closing cover (17).

4. A drainage pumping station according to claim 2 or 3, characterized in that: The maintenance opening and closing assembly (19) includes a lifting cover (191), a lifting rod (192), and a locking rod (193). The lower end of the lifting rod (192) is threaded into the pump room (1), and the lifting cover (191) is threaded onto the lifting rod (192). The lifting cover (191) closes the maintenance opening (18) at the top of the pump room (1). The top of the lifting rod (192) is provided with a rotating part (197) for driving the lifting rod (192) to rotate. The threads of the lower and upper parts of the lifting rod (192) are in opposite directions. The lifting rod (192) and the lifting cover (191) rise or fall simultaneously. One end of the locking rod (193) is fixed to the lifting cover (191), and the other end slides into the inner wall of the pump room (1).

5. A drainage pumping station according to claim 1, characterized in that: The pump room (1) is also provided with a water distribution pipe (8) connected to the bottom of the water chamber (12). The water distribution pipe (8) is connected to the urban drainage pipeline. The water distribution pipe (8) is provided with a water distribution sealing component at the opening in the water chamber (12). The water distribution sealing component includes a water distribution sealing plate (81) and a sealing spring (82). There are multiple sealing springs (82). The multiple sealing springs (82) are arranged at angular intervals around the water distribution sealing plate (81). One end of the sealing spring (82) is connected to the water distribution sealing plate (81) and the other end is connected to the inner wall of the water chamber (12). The water distribution sealing plate (81) is pulled by the sealing spring (82) to close the opening of the water distribution pipe (8).

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