A foundation pit drainage device for subway construction

Abstract

The utility model relates to a foundation pit drainage device for subway construction, which comprises a water pump, the water pump is arranged above an extension plate, the extension plate is overlapped on the top of a water collecting tank, the output pipe end of the water pump is fixed with a water suction hose, the water suction hose is inserted into a jack, the jack is arranged on the top surface of the extension plate, the end of the water suction hose is fixed with a water suction assembly, and an integrated clamping ring is arranged outside the water suction assembly. The water pump is started to draw water in the water collecting tank through the water suction hose, thereby achieving water discharge in the water collecting tank. Meanwhile, a floating object is installed outside the water suction assembly, floats on the water surface in the water collecting tank, and adjusts the water pumping position of the water suction assembly according to the water level in the water collecting tank. The blocking net disc is movably inserted into the mounting groove, thereby filtering sundries in the water in the water collecting tank through the blocking net disc to prevent sundries from entering the water pump and causing damage during water pumping.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit drainage technology, specifically to a foundation pit drainage device for subway construction. Background Technology

[0002] The subway foundation pit is the basis for subway construction; in order to avoid water accumulation in the foundation pit and affect the normal progress of construction, a drainage system is usually required in the foundation pit.

[0003] The most common drainage method used in subway foundation pits is open drainage, also known as sump drainage. This method involves intercepting, diverting, and pumping water out of the pit during construction. Specifically, drainage ditches are excavated around the bottom or in the center of the pit, and sump drains are installed at the bottom of these ditches. Water from the pit flows through the drainage ditches into the sump drains, and is then pumped out. If the pit is deep, a layered open ditch drainage method can be used, deepening the drainage ditches and sump drains layer by layer to gradually achieve the designed pit cross-section and bottom elevation.

[0004] Existing drainage ditches generally adopt an isosceles trapezoidal structure with a narrow upper end. Although such drainage ditches can play a certain role in water collection, excessive water collection requires the water in the foundation pit to be discharged. Therefore, water pumps are needed to extract the water in the foundation pit. However, during the pumping process, debris in the water can easily enter the water pump and cause damage. But after pumping for a period of time, cleaning the debris in the inlet pipe head requires stopping the pumping work and delaying construction. Therefore, a foundation pit drainage device for subway construction is proposed to address the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a foundation pit drainage device for subway construction, which can effectively solve the problem of foundation pit drainage in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a drainage device for a foundation pit in subway construction, including a water pump and a cleaning assembly. The water pump is installed above an extension plate, which overlaps the top of a water collection trough. A suction hose is fixed to the end of the water pump's output pipe, and the suction hose extends into an insertion hole located on the top surface of the extension plate. A suction assembly is fixed to the end of the suction hose, and an integrated snap-fit ​​ring is provided on the outside of the suction assembly. A baffle plate is provided inside the suction assembly, and a float is installed on the outside of the snap-fit ​​ring.

[0007] According to some embodiments of the present invention, the top of the extension plate is evenly distributed with through holes, and the extension plate is configured in multiple groups, with the multiple groups of extension plates distributed at equal intervals above the water collection tank.

[0008] According to some embodiments of the present invention, a cover is movably installed inside the socket, and a through opening is provided on the top of the cover.

[0009] According to some embodiments of the present invention, the water absorption assembly includes a water absorption tube head, an installation groove is provided on the outside of the water absorption tube head, a baffle plate is movably inserted into the inside of the installation groove, and a snap-fit ​​groove is provided on the outside of the baffle plate.

[0010] According to some embodiments of this utility model, an integrally formed filter screen is provided on the outside of the water suction pipe head, a limiting ring is movably sleeved on the outside of the water suction pipe head, and a spring is sleeved on the outside of the water suction pipe head. The spring is located above the limiting ring, and the limiting ring is located above the filter screen. The limiting ring has a limiting effect on the filter screen in the mounting groove.

[0011] According to some embodiments of this utility model, a cleaning component is fixedly connected inside the water absorption assembly. The cleaning component includes a stabilizing frame. The end of the stabilizing frame is fixed to the inner wall of the water absorption pipe head. A rotating shaft is rotatably connected inside the stabilizing frame. A blade is fixedly connected to the outside of the rotating shaft. A scraper fixing frame is fixedly connected to the top of the rotating shaft. The scraper fixing frame is fixedly connected to the bottom surface of the scraper by bolts. The top of the scraper contacts the bottom surface of the baffle plate. The scraper scrapes away debris at the bottom of the baffle plate to prevent the baffle plate from clogging inside the water absorption pipe head during the water pumping process.

[0012] According to some embodiments of this utility model, the blades are arranged in four groups, and the four groups of blades are arranged in a circular array about the central axis of the rotation shaft, and the four groups of blades are not arranged on the same horizontal plane.

[0013] According to some embodiments of this utility model, the torsional force of the blade drive shaft in the suction pipe head is greater than the frictional force between the scraper and the baffle plate.

[0014] Beneficial effects The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. By starting the water pump, the suction hose draws water from the collection tank, thereby discharging the water from the collection tank. At the same time, a float is installed on the outside of the suction assembly, which floats on the water surface in the collection tank. The suction position of the suction assembly is adjusted according to the water level in the collection tank. By movably inserting the baffle plate into the installation groove, the baffle plate filters out impurities in the water in the collection tank, preventing impurities from entering the water pump and causing damage during the pumping process.

[0015] 2. The spring force pushes the limiting ring downward outside the water suction assembly, thus limiting the baffle plate in the installation groove. When the baffle plate needs to be replaced, it can be removed from the water suction pipe head. When the water pump starts, water is drawn from the water collection tank through the water suction hose. The water flow drives the blades to rotate the shaft. Therefore, the shaft drives the scraper fixing frame and scraper to rotate, so that the scraper scrapes away the debris at the bottom of the baffle plate to prevent the baffle plate from clogging in the water suction pipe head during the water pumping process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the water collection tank of this utility model; Figure 3 This is a three-dimensional structural diagram of the water-absorbing component of this utility model; Figure 4 This is a cross-sectional view of the water absorption component of this utility model; Figure 5 A schematic diagram of the connection structure between the water pump and the suction hose; Figure 6 This is a schematic diagram of the three-dimensional structure of the mesh plate of this utility model.

[0018] Reference numerals: 1. Water collection tank; 2. Extension plate; 3. Water pump; 4. Suction hose; 5. Insertion hole; 6. Cover; 7. Float; 8. Suction assembly; 81. Suction pipe head; 82. Mounting groove; 83. Filter screen; 9. Snap ring; 10. Spring; 11. Limiting ring; 12. Filter screen; 13. Cleaning assembly; 131. Blade; 132. Rotating shaft; 133. Stabilizing frame; 134. Scraper fixing frame; 135. Scraper. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] The present invention will be further described below with reference to the embodiments.

[0021] See attached document Figure 1-6 A drainage device for a foundation pit in subway construction includes a water pump 3 and a cleaning component 13. The water pump 3 is positioned above an extension plate 2, which overlaps the top of a water collection tank 1. A suction hose 4 is fixed to the end of the output pipe of the water pump 3, extending into an insertion hole 5 located on the top surface of the extension plate 2. A suction component 8 is fixed to the end of the suction hose 4, with an integrated snap-fit ​​ring 9 on the outside of the suction component 8. A baffle plate 83 is installed inside the suction component 8, and a float 7 is installed outside the snap-fit ​​ring 9. By starting the water pump 3, the suction hose 4 draws water from the water collection tank 1, thereby discharging the water from the water collection tank 1. Simultaneously, the float 7 is installed outside the suction component 8, floating on the water surface in the water collection tank 1. The automatic suction position of the suction component 8 is adjusted according to the water level in the water collection tank 1.

[0022] According to some embodiments of the present invention, the water absorption assembly 8 includes a water absorption tube head 81, an installation groove 82 is provided on the outside of the water absorption tube head 81, a baffle plate 83 is movably inserted into the inside of the installation groove 82, and a snap-fit ​​groove is provided on the outside of the baffle plate 83. By movably inserting the baffle plate 83 into the installation groove 82, the baffle plate 83 filters the impurities in the water in the water collection tank 1.

[0023] In the above technical solution, the water pump 3 is started to draw water from the water collection tank 1 through the suction hose 4, thereby discharging the water from the water collection tank 1. At the same time, a float 7 is installed on the outside of the suction assembly 8. The float 7 floats on the water surface in the water collection tank 1. The water pumping position of the automatic suction assembly 8 is adjusted according to the water level in the water collection tank 1. By movably inserting the baffle plate 83 into the installation groove 82, the baffle plate 83 filters the impurities in the water in the water collection tank 1 to prevent impurities from entering the water pump 3 and causing damage during the water pumping process.

[0024] According to some embodiments of this utility model, an integrally formed filter screen 12 is provided on the outside of the water suction head 81, a limiting ring 11 is movably sleeved on the outside of the water suction head 81, and a spring 10 is sleeved on the outside of the water suction head 81. The spring 10 is located above the limiting ring 11, and the limiting ring 11 is located above the filter screen 12. The spring 10 pushes the limiting ring 11 to move downward outside the water suction assembly 8 by its elastic force. Therefore, the limiting ring 11 has a limiting effect on the baffle screen 83 in the mounting groove 82. When the baffle screen 83 needs to be replaced, it can be removed from the water suction head 81.

[0025] According to some embodiments of this utility model, a cleaning component 13 is fixedly connected inside the water absorption component 8. The cleaning component 13 includes a stabilizing frame 133. The end of the stabilizing frame 133 is fixed to the inner wall of the water suction pipe head 81. A rotating shaft 132 is rotatably connected inside the stabilizing frame 133. A blade 131 is fixedly connected to the outside of the rotating shaft 132. A scraper fixing frame 134 is fixedly connected to the top of the rotating shaft 132. The scraper fixing frame 134 is fixedly connected to the bottom surface of the scraper 135 by bolts. The top of the scraper 135 contacts the bottom surface of the baffle plate 83. When the water pump 3 starts and draws water from the water collection tank 1 through the water suction hose 4, the water flow drives the blade 131 to rotate the rotating shaft 132. Therefore, the rotating shaft 132 drives the scraper fixing frame 134 and the scraper 135 to rotate, so that the scraper 135 scrapes away the debris at the bottom of the baffle plate 83 to prevent the baffle plate 83 from getting blocked in the water suction pipe head 81 during the water pumping process.

[0026] In the above technical solution, the spring force of the spring 10 pushes the limiting ring 11 to move downward outside the water suction assembly 8. Therefore, the limiting ring 11 has a limiting effect on the baffle plate 83 in the mounting groove 82. When the baffle plate 83 needs to be replaced, it can be removed from the water suction pipe head 81. When the water pump 3 starts, it draws water from the water collection tank 1 through the water suction hose 4. The water flow drives the blade 131 to drive the rotating shaft 132 to rotate. Therefore, the rotating shaft 132 drives the scraper fixing frame 134 and the scraper 135 to rotate. Thus, the scraper 135 scrapes away the debris at the bottom of the baffle plate 83 to prevent the baffle plate 83 from getting blocked in the water suction pipe head 81 during the water pumping process.

[0027] Working principle: The water pump 3 is started, which causes the suction hose 4 to draw water from the water collection tank 1, thereby discharging the water in the water collection tank 1. The float 7 floats on the water surface in the water collection tank 1. The water pumping position of the automatic water suction component 8 is adjusted according to the water level in the water collection tank 1. The baffle plate 83 filters the impurities in the water in the water collection tank 1 to prevent impurities from entering and causing damage to the water pump 3 during the water pumping process. The limit ring 11 limits the baffle plate 83 in the installation groove 82. When the baffle plate 83 needs to be replaced, it can be removed from the suction pipe head 81. When the water pump 3 starts and draws water from the water collection tank 1 through the suction hose 4, the water flow drives the blade 131 to drive the rotating shaft 132 to rotate. Therefore, the rotating shaft 132 drives the scraper fixing frame 134 and the scraper 135 to rotate. Thus, the scraper 135 scrapes away the impurities at the bottom of the baffle plate 83 to prevent the baffle plate 83 from clogging in the suction pipe head 81 during the water pumping process.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drainage device for foundation pits used in subway construction, characterized in that: Includes a water pump (3) and a cleaning assembly (13). The water pump (3) is located above an extension plate (2). The extension plate (2) overlaps the top of the water collection tank (1). A water suction hose (4) is fixed to the end of the output pipe of the water pump (3). The water suction hose (4) extends into a socket (5). The socket (5) is located on the top surface of the extension plate (2). A water suction assembly (8) is fixed to the end of the water suction hose (4). An integrated snap ring (9) is provided on the outside of the water suction assembly (8). A baffle plate (83) is provided inside the water suction assembly (8). A float (7) is installed on the outside of the snap ring (9).

2. The foundation pit drainage device for subway construction according to claim 1, characterized in that: The top of the extension plate (2) is evenly distributed with through holes. The extension plate (2) is configured in multiple groups, and the multiple groups of extension plates (2) are distributed at equal intervals above the water collection tank (1).

3. A foundation pit drainage device for subway construction according to claim 1, characterized in that: The socket (5) is movably fitted with a cover (6), and the top of the cover (6) is provided with a through opening.

4. A drainage device for foundation pits in subway construction according to claim 1, characterized in that: The water absorption assembly (8) includes a water absorption tube head (81), an installation groove (82) is provided on the outside of the water absorption tube head (81), a baffle plate (83) is movably inserted into the inside of the installation groove (82), and a snap groove is provided on the outside of the baffle plate (83).

5. A drainage device for foundation pits in subway construction according to claim 4, characterized in that: The water suction head (81) is provided with an integrally formed filter screen (12) on the outside. A limiting ring (11) is movably sleeved on the outside of the water suction head (81). A spring (10) is sleeved on the outside of the water suction head (81). The spring (10) is located above the limiting ring (11). The limiting ring (11) is located above the filter screen (12). The limiting ring (11) plays a limiting role in blocking the filter screen (83) in the mounting groove (82).

6. A foundation pit drainage device for subway construction according to claim 1, characterized in that: The water absorption assembly (8) is internally fixedly connected to a cleaning assembly (13), which includes a stabilizing frame (133). The end of the stabilizing frame (133) is fixed to the inner wall of the water suction head (81). The stabilizing frame (133) is internally rotatably connected to a rotating shaft (132). The rotating shaft (132) is externally fixedly connected to a blade (131). The top of the rotating shaft (132) is fixedly connected to a scraper fixing frame (134). The scraper fixing frame (134) is fixedly connected to the bottom surface of the scraper (135) by bolts. The top of the scraper (135) contacts the bottom surface of the baffle plate (83). The scraper (135) scrapes away debris from the bottom of the baffle plate (83) to prevent the baffle plate (83) from clogging inside the water suction head (81) during the water pumping process.

7. A foundation pit drainage device for subway construction according to claim 6, characterized in that: The blades (131) are arranged in four groups, and the four groups of blades (131) are arranged in a ring array about the central axis of the rotating shaft (132), and the four groups of blades (131) are not arranged on the same horizontal plane.

8. A foundation pit drainage device for subway construction according to claim 6, characterized in that: The torsional force of the blade (131) driving the shaft (132) within the suction pipe head (81) is greater than the frictional force between the scraper (135) and the screen (83).

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