Deep foundation pit dewatering and drainage treatment device

Abstract

The utility model relates to the technical field of foundation pit drainage, in particular to a deep foundation pit dewatering and drainage treatment device which comprises a mounting frame erected on a deep foundation pit, a mounting rod is arranged on the mounting frame, and a barrel is arranged at the end, away from the mounting frame, of the mounting rod. The barrel and the mounting frame are jointly provided with a water pumping assembly used for pumping accumulated water in the deep foundation pit, a filtering mechanism used for filtering the pumped accumulated water is arranged in the barrel, and a cleaning assembly used for preventing the filtering mechanism from being blocked is further arranged in the barrel. According to the application, the suction efficiency of the accumulated water in the deep foundation pit can be improved, so that the treatment effect of the accumulated water in the deep foundation pit can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit drainage, and in particular to a deep foundation pit drainage treatment device. Background Art

[0002] A deep foundation pit refers to a project with an excavation depth exceeding 5 meters, or a project with a depth of less than 5 meters but complex geological conditions, surrounding environment, and underground pipelines. Because deep foundation pits are prone to accumulating water during rainy weather or other factors, hindering construction, pumping equipment is required to remove the accumulated water.

[0003] Existing water pumping devices usually include a water pump, a water pump pipe and a filter screen. The water pump is fixedly connected to the water pump pipe, and the filter screen cover is arranged on the periphery of the water inlet of the water pump, so as to filter the accumulated water sucked by the water pump to prevent the water pump from being blocked.

[0004] However, since deep foundation pits are basically in the open air, external debris can easily fall into the deep foundation pit. Therefore, during the pumping process, the debris in the deep foundation pit will move toward the water inlet of the pump with the flow of accumulated water and be adsorbed on the periphery of the filter cylinder, which can easily affect the suction efficiency of the accumulated water in the deep foundation pit, thereby affecting the treatment effect of the accumulated water in the deep foundation pit. Utility Model Content

[0005] In order to improve the efficiency of pumping water accumulated in deep foundation pits, thereby improving the treatment effect of water accumulated in deep foundation pits, the present application provides a deep foundation pit drainage treatment device.

[0006] This application provides a deep foundation pit drainage treatment device, which adopts the following technical solutions:

[0007] A deep foundation pit drainage treatment device includes a mounting frame erected on the deep foundation pit, a mounting rod is provided on the mounting frame, a cylinder is provided at one end of the mounting rod away from the mounting frame, a pumping assembly for sucking out accumulated water inside the deep foundation pit is provided on the cylinder and the mounting frame, a filtering mechanism for filtering the sucked accumulated water is provided inside the cylinder, and a cleaning assembly for preventing the filtering mechanism from being blocked is also provided inside the cylinder.

[0008] By adopting the above technical solution, the pumping component helps to suck the accumulated water inside the deep foundation pit, the filtering mechanism helps to filter the sucked accumulated water during the suction process, and the cleaning component helps to clean the filtering mechanism, thereby helping to avoid the clogging of the filtering mechanism caused by debris in the accumulated water as much as possible, thereby helping to improve the suction and filtration efficiency of the accumulated water in the deep foundation pit, and helping to improve the treatment effect of the accumulated water in the deep foundation pit.

[0009] In a specific feasible implementation scheme, the water pumping assembly includes a water pump, a water pumping pipe, a water supply pipe and a drainage pipe. The water pump is fixedly arranged on a mounting frame, the drainage pipe is fixedly connected to the water pump, one end of the water supply pipe is connected to the water pump, the other end of the water supply pipe is connected to the cylinder, one end of the water pumping pipe is connected to the cylinder, and the other end of the water pumping pipe is inserted into a deep foundation pit.

[0010] By adopting the above technical solution, a water pump is used to help suck the accumulated water in the deep foundation pit through the water suction pipe and the water delivery pipe, and the pumped accumulated water is discharged to a set location through the drainage pipe.

[0011] In a specific possible implementation scheme, the filtering mechanism includes a rotating cylinder, which is arranged on the inner top wall of the cylinder, and a rotating mounting plate is provided at the output end of the rotating cylinder. A partition plate is fixedly provided inside the cylinder, and the partition plate is located on the side of the rotating mounting plate away from the rotating cylinder, and the connection positions of the water suction pipe and the water supply pipe with the cylinder are both located between the partition plate and the rotating mounting plate. The partition plate divides the interior of the cylinder into a filter chamber and a slag storage chamber, and the filter chamber is located between the partition plate and the rotating mounting plate, and the slag storage chamber is located on the side of the partition plate away from the rotating mounting plate, and at least two groups of filter components are provided inside the filter chamber.

[0012] By adopting the above technical solution, when the accumulated water in the deep foundation pit is sucked out, the two sets of filter components are used to help alternately filter the sucked out accumulated water. After one set of filter components has been used for a set time, the rotating mounting plate is driven to rotate by the rotating cylinder, thereby helping to exchange the positions of the two sets of filter components, and then helping to continue filtering the accumulated water using the other set of filter components. At the same time, the cleaning components are used to help clean the used filter components. Such a cyclic operation helps to avoid the blockage of the filter components caused by debris in the accumulated water, thereby helping to improve the suction and filtration efficiency of the accumulated water in the deep foundation pit, and thus helping to improve the treatment effect of the accumulated water in the deep foundation pit.

[0013] In a specific possible implementation scheme, each group of the filter components includes a mounting cylinder, a filter mesh cylinder, a first connecting piece and a second connecting piece. The mounting cylinder is fixedly arranged on the rotating mounting plate, and the end of the mounting cylinder away from the rotating mounting plate is tightly fitted with the partition plate. The filter mesh cylinder is fixedly arranged in the mounting cylinder. The first connecting piece and the second connecting piece are both arranged on the outer wall of the mounting cylinder and are connected to the inside of the mounting cylinder. The first connecting piece is used to connect the water suction pipe and the mounting cylinder, and the second connecting piece is used to connect the water supply pipe and the mounting cylinder.

[0014] By adopting the above technical solution, when the accumulated water in the deep foundation pit is sucked out, the accumulated water sucked out by the suction pipe enters the interior of the installation cylinder through the first connecting piece. Under the joint action of the installation cylinder and the cleaning component, it helps to filter the accumulated water and helps the filtered accumulated water enter the water pipe through the second connecting piece, making it convenient for the water pump to pump out the accumulated water.

[0015] In a specific possible implementation manner, a sealing gasket is provided at one end of the mounting cylinder away from the rotating mounting plate, and the sealing gasket is used to seal the gap between the mounting cylinder and the partition plate.

[0016] By adopting the above technical solution, the sealing gasket ring is used to help seal the gap between the installation cylinder and the partition plate, thereby helping to prevent accumulated water from flowing out of the gap between the installation cylinder and the partition plate into the cylinder body.

[0017] In a specific feasible implementation scheme, the cleaning assembly includes a telescopic spring and a cleaning ring, the cleaning ring is movably sleeved on the circumferential periphery of the filter mesh cylinder, and the circumferential outer wall of the cleaning ring is slidably fitted with the circumferential inner wall of the mounting cylinder, the telescopic spring is sleeved on the circumferential periphery of the filter mesh cylinder, and one end of the telescopic spring is connected to the cleaning ring, and the other end is connected to the inner wall of the mounting cylinder, a slag drop opening is provided through the partition plate, and the inner diameter of the slag drop opening is the same as the inner diameter of the mounting cylinder.

[0018] By adopting the above technical solution, when the installation cylinder is connected with the suction pipe and the water supply pipe, the cleaning ring moves in the direction of water flow under the action of water flow and squeezes the telescopic spring; when the installation cylinder is not connected with the suction pipe and the water supply pipe, the telescopic spring pushes the cleaning ring under the action of its own elastic force, so that the cleaning ring slides along the axial outer wall of the filter screen cylinder, thereby helping to use the cleaning ring to clean the debris attached to the outer wall of the filter screen cylinder, and allowing the debris and residual accumulated water to fall into the slag storage cavity through the slag dropping port, which helps to avoid the clogging of the filter screen cylinder by the debris in the accumulated water, thereby helping to improve the suction and filtration efficiency of the accumulated water in the deep foundation pit, and then helping to improve the treatment effect of the accumulated water in the deep foundation pit.

[0019] In a specific possible implementation scheme, a guide rod is provided on the outer side wall of the filter screen cylinder, and the guide rod is arranged along the axial direction of the filter screen cylinder. A clamping groove for clamping the guide rod is provided on the inner side wall of the cleaning ring.

[0020] By adopting the above technical solution, the guide rod is used to help guide the moving path of the cleaning ring, thereby helping to improve the cleaning effect of the cleaning ring on the debris attached to the outer wall of the filter cylinder.

[0021] In a specific implementation scheme, a slag pump is provided on the mounting frame, and a slag discharge pipe and a slag extraction pipe are provided on the slag extraction pump. One end of the slag extraction pipe away from the slag extraction pump is connected to the cylinder and communicated with the slag storage chamber.

[0022] By adopting the above technical solution, the slag extraction pump is used to help suck the debris stored inside the slag storage cavity through the slag extraction pipe, and discharge the extracted debris to a set position through the slag discharge pipe.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This application provides a filtering mechanism and a cleaning component. The filtering mechanism helps to filter the sucked accumulated water during the suction process, and the cleaning component helps to clean the filtering mechanism, thereby helping to avoid as much as possible the clogging of the filtering mechanism caused by debris in the accumulated water, thereby helping to improve the suction and filtration efficiency of the accumulated water in the deep foundation pit, and helping to improve the treatment effect of the accumulated water in the deep foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a cross-sectional view showing the internal structure of the deep foundation pit.

[0027] Figure 3 It is a cross-sectional view showing the specific structure of the filtering mechanism and cleaning components.

[0028] Figure 4 It is a schematic diagram showing the connection between the cleaning ring and the filter cylinder.

[0029] Explanation of the accompanying drawings: 1. Mounting frame; 2. Mounting rod; 3. Cylinder; 4. Pumping assembly; 41. Water pump; 42. Pumping pipe; 43. Water pipe; 44. Drain pipe; 5. Cleaning assembly; 51. Telescopic spring; 52. Cleaning ring; 6. Rotating cylinder; 7. Rotating mounting plate; 8. Partition plate; 9. Filter assembly; 91. Mounting cylinder; 92. Filter mesh cylinder; 93. First connecting piece; 94. Second connecting piece; 10. Filter chamber; 11. Slag storage chamber; 12. Sealing gasket; 13. Guide rod; 14. Clamping groove; 15. Slag extraction pump; 16. Slag discharge pipe; 17. Slag extraction pipe; 18. Slag drop outlet. DETAILED DESCRIPTION

[0030] The present application is further described in detail below with reference to the accompanying drawings.

[0031] The present application discloses a deep foundation pit drainage treatment device, referring to Figure 1 and Figure 2, including a mounting frame 1, the mounting frame 1 is fixedly mounted above the deep foundation pit. A vertically arranged mounting rod 2 is fixedly mounted on the mounting frame 1, the bottom end of the mounting rod 2 is inserted into the deep foundation pit, and the bottom end of the mounting rod 2 is fixedly connected to a cylinder 3. A pumping assembly 4 is jointly arranged on the cylinder 3 and the mounting frame 1, and the pumping assembly 4 includes a water pump 41, a water pumping pipe 42, a water supply pipe 43 and a drainage pipe 44. The water pump 41 is fixedly mounted on the top surface of the mounting frame 1, one end of the water pumping pipe 42 is fixedly connected to the cylinder 3, and the other end is inserted into the accumulated water in the deep foundation pit, one end of the water supply pipe 43 is fixedly connected to the cylinder 3, and the other end is fixedly connected to the water pump 41, and one end of the drainage pipe 44 is fixedly connected to the water pump 41.

[0032] Reference Figure 2 and Figure 3 A filtering mechanism is provided inside the cylinder 3, and the filtering mechanism includes a rotating cylinder 6 fixedly mounted on the inner top wall of the cylinder 3. A rotating mounting plate 7 is fixedly mounted on the output end of the rotating cylinder 6, and the circumferential side wall of the rotating mounting plate 7 is in contact with the circumferential inner wall of the cylinder 3. A partition plate 8 is fixedly mounted inside the cylinder 3, and the partition plate 8 is spaced apart from the rotating mounting plate 7 and is located below the rotating mounting plate 7. The partition plate 8 divides the interior of the cylinder 3 into a filter chamber 10 and a slag storage chamber 11. The filter chamber 10 is located between the partition plate 8 and the rotating mounting plate 7, and the slag storage chamber 11 is located below the partition plate 8, and the water pumping pipe 42 and the water supply pipe 43 are both connected to the filter chamber 10. The filtering mechanism also includes at least two groups of filter components 9. In this embodiment, there are two groups of filter components 9, and both groups of filter components 9 are arranged on the bottom surface of the rotating mounting plate 7.

[0033] Reference Figure 3 Each filter assembly 9 includes a mounting cylinder 91, a filter screen cylinder 92, a first connecting piece 93, and a second connecting piece 94. The mounting cylinder 91 is fixedly mounted on the bottom surface of the rotating mounting plate 7. A sealing ring 12 is fixed to the bottom end of the mounting cylinder 91, and the sealing ring 12 is tightly fitted against the top surface of the partition plate 8. The filter screen cylinder 92 is fixedly mounted within the mounting cylinder 91 and is coaxially arranged with the mounting cylinder 91. The first connecting piece 93 and the second connecting piece 94 are both fixedly connected to the mounting cylinder 91, and the outer walls of the first connecting piece 93 and the second connecting piece 94 are both fitted against the inner wall of the cylinder body 3.

[0034] Reference Figure 3 and Figure 4Each mounting cylinder 91 is provided with a cleaning assembly 5, which includes a telescopic spring 51 and a cleaning ring 52. The cleaning ring 52 can be raised and lowered to fit on the circumferential outer wall of the filter cylinder 92. The circumferential outer wall of the cleaning ring 52 slides and fits with the circumferential inner wall of the mounting cylinder 91. A plurality of guide rods 13 are axially fixed on the axial outer wall of the filter cylinder 92. A plurality of snap-fit ​​grooves 14 are provided on the inner side wall of the cleaning ring 52. Each guide rod 13 slides and fits into a snap-fit ​​groove 14. The telescopic spring 51 is fixedly fitted on the circumferential outer periphery of the filter cylinder 92, and the bottom end of the telescopic spring 51 is fixedly connected to the top surface of the cleaning ring 52, and the top end is fixedly connected to the inner top wall of the mounting cylinder 91. A slag dropout opening 18 is provided through the partition plate 8, and the inner diameter of the slag dropout opening 18 is the same as the inner diameter of the mounting cylinder 91.

[0035] Reference Figure 2 and Figure 3 When pumping out the accumulated water in the deep foundation pit, the water pump 41 is started, and the water pump 41 pumps out the accumulated water in the deep foundation pit through the water pump pipe 42 and the water supply pipe 43. After the accumulated water is pumped into the water pump pipe 42, it enters the interior of a mounting cylinder 91 through the first connecting piece 93. Under the blocking effect of the cleaning ring 52, the accumulated water entering the mounting cylinder 91 passes through the filter cylinder 92 and then enters the water supply pipe 43 through the second connecting piece 94. When the accumulated water enters the interior of the mounting cylinder 91, the cleaning ring 52 slides upward under the action of the water flow and squeezes the telescopic spring 51. In the process of the accumulated water passing through the filter cylinder 92, the filter cylinder 92 filters and intercepts the debris in the accumulated water, causing the debris to adhere to the outer surface of the filter cylinder 92.

[0036] Reference Figure 2 and Figure 3 After the accumulated water in the deep foundation pit has been sucked out for a period of time, the rotating cylinder 6 is started to drive the rotating mounting plate 7 to rotate 180 degrees, thereby driving the two sets of filter components 9 to rotate 180 degrees, so that the positions of the two sets of filter components 9 are exchanged, so that the water suction pipe 42 and the water delivery pipe 43 are connected to the other mounting cylinder 91, which helps to utilize the internal structure of the other mounting cylinder 91 to filter the sucked accumulated water. At the same time, an installation cylinder 91 that is no longer connected to the suction pipe 42 and the water supply pipe 43 is rotated to above the slag drop outlet 18, so that the accumulated water remaining in the installation cylinder 91 falls into the slag storage chamber 11 through the slag drop outlet 18, and the telescopic spring 51 pushes the cleaning ring 52 downward under the action of its own elastic force, so that the cleaning ring 52 slides along the axial outer wall of the filter screen cylinder 92, thereby helping to use the cleaning ring 52 to clean the debris attached to the outer wall of the filter screen cylinder 92, and allowing the debris falling off the surface of the filter screen cylinder 92 to fall into the slag storage chamber 11 for storage, which helps to avoid the blockage of the filter screen cylinder 92 by the debris in the accumulated water, thereby helping to improve the suction and filtration efficiency of the accumulated water in the deep foundation pit, and thus helping to improve the treatment effect of the accumulated water in the deep foundation pit.

[0037] Reference Figure 1 and Figure 3 A slag extraction pump 15 is fixedly mounted on the top surface of the mounting frame 1. A slag extraction pipe 17 is fixedly connected to the slag extraction pump 15. The end of the slag extraction pipe 17 away from the slag extraction pump 15 is fixedly connected to the slag storage chamber 11. A slag discharge pipe 16 is also fixedly connected to the slag extraction pump 15. After the debris on the surface of the filter cylinder 92 is cleaned, the operator starts the slag extraction pump 15, sucks the debris stored in the slag storage chamber 11 through the slag extraction pipe 17, and discharges the extracted debris to a set location through the slag discharge pipe 16.

[0038] The implementation principle of the embodiment of the present application is as follows: when the accumulated water in the deep foundation pit is sucked out, the water pump 41 is started, and the water pump 41 sucks the accumulated water in the deep foundation pit through the water pump pipe 42 and the water supply pipe 43. After the accumulated water is pumped into the water pump pipe 42, it enters the interior of a mounting cylinder 91 through the first connecting piece 93. Under the blocking action of the cleaning ring 52, the accumulated water entering the interior of the mounting cylinder 91 passes through the filter screen cylinder 92, and then enters the water supply pipe 43 through the second connecting piece 94. Thereafter, under the action of the water pump 41, it is discharged to the set position through the drain pipe 44. When the accumulated water enters the interior of the mounting cylinder 91, the cleaning ring 52 slides upward under the action of the water flow and squeezes the telescopic spring 51. In the process of the accumulated water passing through the filter screen cylinder 92, the filter screen cylinder 92 filters and intercepts the debris in the accumulated water, so that the debris adheres to the outer surface of the filter screen cylinder 92.

[0039] After the accumulated water in the deep foundation pit has been sucked out for a period of time, the rotating cylinder 6 is started to drive the rotating mounting plate 7 to rotate 180 degrees, thereby driving the two groups of filter components 9 to rotate 180 degrees, so that the positions of the two groups of filter components 9 are exchanged, so that the water suction pipe 42 and the water supply pipe 43 are connected to the other mounting cylinder 91, which helps to utilize the internal structure of the other mounting cylinder 91 to filter the sucked accumulated water. At the same time, an installation cylinder 91 that is no longer connected to the suction pipe 42 and the water supply pipe 43 is rotated to above the slag drop outlet 18, so that the accumulated water remaining in the installation cylinder 91 falls into the slag storage chamber 11 through the slag drop outlet 18, and the telescopic spring 51 pushes the cleaning ring 52 downward under the action of its own elastic force, so that the cleaning ring 52 slides along the axial outer wall of the filter screen cylinder 92, thereby helping to use the cleaning ring 52 to clean the debris attached to the outer wall of the filter screen cylinder 92, and allowing the debris falling off the surface of the filter screen cylinder 92 to fall into the slag storage chamber 11 for storage, which helps to avoid the blockage of the filter screen cylinder 92 by the debris in the accumulated water, thereby helping to improve the suction and filtration efficiency of the accumulated water in the deep foundation pit, and thus helping to improve the treatment effect of the accumulated water in the deep foundation pit.

[0040] After the debris on the surface of the filter cylinder 92 is cleaned, the operator starts the slag extraction pump 15 to suck the debris stored in the slag storage chamber 11 through the slag extraction pipe 17 and discharges the extracted debris to a set position through the slag discharge pipe 16.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A deep foundation pit drainage treatment device, characterized by: The invention comprises a mounting frame (1) erected on a deep foundation pit, a mounting rod (2) being provided on the mounting frame (1), a cylinder (3) being provided at one end of the mounting rod (2) away from the mounting frame (1), a pumping assembly (4) for sucking accumulated water inside the deep foundation pit being provided on the cylinder (3) and the mounting frame (1), a filtering mechanism for filtering the sucked accumulated water being provided inside the cylinder (3), and a cleaning assembly (5) for preventing the filtering mechanism from being blocked being provided inside the cylinder (3).

2. A deep foundation pit drainage treatment device according to claim 1, characterized in that: The water pumping assembly (4) comprises a water pump (41), a water pumping pipe (42), a water delivery pipe (43) and a drainage pipe (44); the water pump (41) is fixedly arranged on the mounting frame (1); the drainage pipe (44) is fixedly connected to the water pump (41); one end of the water delivery pipe (43) is connected to the water pump (41); the other end of the water delivery pipe (43) is connected to the cylinder (3); one end of the water pumping pipe (42) is connected to the cylinder (3); and the other end of the water pumping pipe (42) is inserted into the deep foundation pit.

3. The deep foundation pit drainage treatment device according to claim 2, characterized in that: The filtering mechanism comprises a rotating cylinder (6), the rotating cylinder (6) being arranged on the inner top wall of the cylinder (3), the output end of the rotating cylinder (6) being provided with a rotating mounting plate (7), a partition plate (8) being fixedly provided inside the cylinder (3), the partition plate (8) being located on the side of the rotating mounting plate (7) facing away from the rotating cylinder (6), and the communication positions of the water extraction pipe (42) and the water delivery pipe (43) with the cylinder (3) being located between the partition plate (8) and the rotating mounting plate (7), the partition plate (8) dividing the inside of the cylinder (3) into a filter chamber (10) and a slag storage chamber (11), the filter chamber (10) being located between the partition plate (8) and the rotating mounting plate (7), the slag storage chamber (11) being located on the side of the partition plate (8) facing away from the rotating mounting plate (7), and at least two groups of filter components (9) being provided inside the filter chamber (10).

4. The deep foundation pit drainage treatment device according to claim 3, characterized in that: Each group of the filter components (9) comprises a mounting cylinder (91), a filter screen cylinder (92), a first connecting piece (93) and a second connecting piece (94); the mounting cylinder (91) is fixedly arranged on the rotating mounting plate (7), and one end of the mounting cylinder (91) away from the rotating mounting plate (7) is tightly fitted with the partition plate (8); the filter screen cylinder (92) is fixedly arranged in the mounting cylinder (91); the first connecting piece (93) and the second connecting piece (94) are both arranged on the outer wall of the mounting cylinder (91) and are connected to the inside of the mounting cylinder (91); the first connecting piece (93) is used to connect the water pumping pipe (42) and the mounting cylinder (91); the second connecting piece (94) is used to connect the water delivery pipe (43) and the mounting cylinder (91).

5. The deep foundation pit drainage treatment device according to claim 4, characterized in that: A sealing ring (12) is provided at one end of the mounting cylinder (91) away from the rotating mounting plate (7), and the sealing ring (12) is used to seal the gap between the mounting cylinder (91) and the partition plate (8).

6. The deep foundation pit drainage treatment device according to claim 4, characterized in that: The cleaning assembly (5) includes a telescopic spring (51) and a cleaning ring (52), wherein the cleaning ring (52) is movably sleeved on the circumferential periphery of the filter screen cylinder (92), and the circumferential outer wall of the cleaning ring (52) is slidably fitted with the circumferential inner wall of the mounting cylinder (91), and the telescopic spring (51) is sleeved on the circumferential periphery of the filter screen cylinder (92), and one end of the telescopic spring (51) is connected to the cleaning ring (52), and the other end is connected to the inner wall of the mounting cylinder (91), and a slag drop opening (18) is provided through the partition plate (8), and the inner diameter of the slag drop opening (18) is the same as the inner diameter of the mounting cylinder (91).

7. The deep foundation pit drainage treatment device according to claim 6, characterized in that: A guide rod (13) is provided on the outer side wall of the filter screen cylinder (92), and the guide rod (13) is arranged along the axial direction of the filter screen cylinder (92). A clamping groove (14) for clamping the guide rod (13) is provided on the inner side wall of the cleaning ring (52).

8. The deep foundation pit drainage treatment device according to claim 3, characterized in that: A slag extraction pump (15) is provided on the mounting frame (1), and a slag discharge pipe (16) and a slag extraction pipe (17) are provided on the slag extraction pump (15). An end of the slag extraction pipe (17) away from the slag extraction pump (15) is connected to the cylinder (3) and communicated with the slag storage chamber (11).

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