Dewatering device for deep and large foundation pit

Abstract

The utility model relates to the technical field of foundation pit dewatering, in particular to a deep and large foundation pit dewatering device which comprises a water collecting main pipe and two water suction pumps, the input ends and the output ends of the water suction pumps are fixed and communicate with water suction pipes and water drainage pipes correspondingly, and the front end of the water collecting main pipe is fixed and communicates with a plurality of hoses. And a winding assembly is arranged on the outer surface of the hose. According to the dewatering device for the deep and large foundation pit, by arranging the winding assembly, the hose can be collected according to the needed distance length, so that the distance between the foundation pit and the water collecting main pipe can be prolonged, and the situation that drained water is fused with underground water near the foundation pit, and consequently the dewatering effect is affected is avoided; and by arranging a filtering assembly, silt and water in the foundation pit can be effectively prevented from being pumped out together by a water pump, the water flow amount of the silt in the foundation pit is reduced, it is guaranteed that the internal structural strength of the foundation pit is not affected, and the device is convenient to disassemble and replace.

Description

Technical Field

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

[0002] The foundation pit is an earth pit excavated at the foundation design location according to the base elevation and foundation plane dimensions, while a deep foundation pit refers to an excavation depth exceeding 5 meters. Foundation pit dewatering means that when the foundation pit is excavated, the groundwater level is higher than the excavation bottom surface, and the groundwater will continue to seep into the pit.

[0003] Therefore, in order to ensure that the foundation pit can be constructed under dry conditions and prevent slope instability, foundation sand flow, pit bottom uplift, pit bottom pipe gushing and reduced foundation bearing capacity, precipitation work is usually done by open ditch plus water collection well precipitation, light well point precipitation, jet well point precipitation, electro-osmosis well point precipitation, deep well well point precipitation, etc. Among them, light well point precipitation usually installs a water collection main pipe on the periphery of the foundation pit, and installs multiple water collection pipes on the water collection main pipe. The water collection pipe is inserted into the well point arranged in advance to pump out the water in the foundation pit. However, since the water collection pipe is usually L-shaped and its horizontal length is effective, the water collection main pipe is arranged relatively close, and the water discharged by the water collection main pipe seeps into the ground and is easily mixed with the groundwater near the foundation pit, making the precipitation effect poor. In addition, the soil near the foundation pit is relatively loose and subsided, resulting in unstable precipitation. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present application provides a deep and large foundation pit dewatering device, which has the advantages of better dewatering performance and solves the problem of poor dewatering performance.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a deep and large foundation pit dewatering device, including a water collecting main pipe and two water pumps, the input end and the output end of the water pump are respectively fixed and connected with a suction pipe and a drainage pipe, the front end of the water collecting main pipe is fixed and connected with a plurality of hoses, the outer surface of the hose is provided with a winding assembly, the other end of the hose is fixed with a suction pipe, the lower end of the suction pipe is provided with a filtering assembly, the input end of the water pump is fixed and connected with the suction pipe, and the output end of the water pump is fixed and connected with the drainage pipe.

[0006] The winding assembly includes a winding bin arranged at the lower end of the water collecting main pipe, the upper and lower walls of the inner cavity of the winding bin are rotatably connected to a winding rod through bearings, a partition is fixed to the top of the inner cavity of the winding bin, a motor is fixed to the top of the inner cavity of the winding bin, a gear is fixed to the output end of the motor, and a plurality of tooth grooves are opened at the upper end of the outer surface of the winding rod.

[0007] By adopting the above technical solution, the distance between the water collection main pipe and the foundation pit can be extended, which can ensure stability during precipitation.

[0008] Furthermore, the modules of the plurality of tooth grooves are the same as those of the gear, and the plurality of tooth grooves are meshed with the gear.

[0009] The above technical solution is adopted so that the gear drives the winding rod to rotate.

[0010] Furthermore, a through hole is opened on the top of the winding bin, and the hose passes through the through hole to the outside of the winding bin and is slidably connected thereto.

[0011] By adopting the above technical solution, the hose can be extended into the winding bin.

[0012] Furthermore, a communicating hole is provided at the bottom of the winding bin, and the hose passes through the communicating hole to the outside of the winding bin and is slidably connected thereto.

[0013] By adopting the above technical solution, the hose can be extended out of the winding bin.

[0014] Furthermore, a circular hole is opened at the lower end of the partition, and the winding rod passes through the outside of the circular hole and is rotatably connected thereto.

[0015] By adopting the above technical solution, the gear can be isolated from the hose, thereby preventing the hose from being entangled on the gear when the hose is reeled in by the reeling rod.

[0016] Furthermore, the filter assembly includes a filter tube arranged at the lower end of the water suction pipe, three filter screens are fixed inside the filter tube, and the filter assembly also includes protrusions fixed to the left and right sides of the water suction pipe, plug blocks are fixed to the left and right ends of the filter tube, and the internal threads of the plug blocks are connected to screws, and the opposite ends of the left and right screws are rotatably connected to limit blocks through bearings, and the opposite ends of the left and right screws are fixed with handles.

[0017] The above technical solution is adopted to separate water from sediment and facilitate disassembly and replacement.

[0018] Furthermore, a plug hole is provided on the top of the plug block, and the protrusion passes through the plug hole to the inside of the plug block and is plugged therein.

[0019] The above technical solution is adopted so that the protrusion can be inserted into the interior of the insert block.

[0020] Furthermore, threaded holes are provided on the opposite sides of the left and right protrusions, and the screw rods penetrate the threaded holes to the interior of the insert block and are threadedly connected thereto.

[0021] By adopting the above technical solution, the screw rod can be moved into or out of the insert block.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The deep and large foundation pit dewatering device is provided with a winding component, which can collect the hose according to the required distance length, so as to extend the distance between the foundation pit and the water collecting main pipe, avoid the discharged water from merging with the groundwater near the foundation pit, and affect the dewatering effect, and can reduce the unstable dewatering caused by the loosening and subsidence of the soil near the foundation pit. The filter component is provided to effectively prevent the silt and water in the foundation pit from being pumped out by the water pump, reduce the flow rate of the silt in the foundation pit, ensure that the internal structural strength of the foundation pit will not be affected, and facilitate the disassembly and replacement of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the winding assembly of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the hose and the suction pipe of this application;

[0027] Figure 4 This is a schematic diagram of the internal structure of the plug-in block of this application.

[0028] In the figure: 1. water collecting main pipe; 2. water suction pipe; 3. water pump; 4. hose; 5. winding assembly; 501. winding bin; 502. winding rod; 503. partition; 504. motor; 505. gear; 506. tooth groove; 6. water suction pipe; 7. filter assembly; 701. filter tube; 702. filter net; 703. bump; 704. plug block; 705. limit block; 706. screw; 707. handle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] See also Figure 1 and Figure 3 A deep and large foundation pit dewatering device in this embodiment includes a water collecting main pipe 1 and two water pumps 3, the input end of the water pump 3 is fixed and connected to the water pumping pipe 2, the output end of the water pump 3 is fixed and connected to the drainage pipe, and the top of the water collecting main pipe 1 is fixed and connected to the other ends of the two water pumping pipes 2, and the front end of the water collecting main pipe 1 is fixed and connected with multiple hoses 4, the outer surface of the hose 4 is provided with a winding component 5, the other end of the hose 4 is fixed with a water suction pipe 6, and the lower end of the water suction pipe 6 is provided with a filtering component 7.

[0031] See also Figure 1-2 The winding assembly 5 in this embodiment includes a winding bin 501 arranged at the lower end of the water collecting main pipe 1, the winding bin 501 is fixed on the water collecting main pipe 1, and the winding bin 501 is fixed on the ground by bolts so as to enhance the stability of the water collecting main pipe 1, the upper and lower walls of the inner cavity of the winding bin 501 are rotatably connected with a winding rod 502 through bearings, a partition 503 is fixed on the top of the inner cavity of the winding bin 501, a motor 504 is fixed on the top of the inner cavity of the winding bin 501, a gear 505 is fixed on the output end of the motor 504, and a plurality of tooth grooves 506 are provided on the upper end of the outer surface of the winding rod 502.

[0032] Secondly, the plurality of tooth grooves 506 have the same module as the gear 505 , and the plurality of tooth grooves 506 mesh with the gear 505 , so that the gear 505 can mesh with the winding rod 502 .

[0033] In addition, a through hole is provided at the top of the winding bin 501, and the hose 4 passes through the through hole to the outside of the winding bin 501 and is slidably connected thereto. A connecting hole is provided at the bottom of the winding bin 501, and the hose 4 passes through the connecting hole to the outside of the winding bin 501 and is slidably connected thereto, so that the hose 4 can extend into and out of the winding bin 501 so that the winding rod 502 can reel it up.

[0034] In addition, a circular hole is opened at the lower end of the partition 503, and the winding rod 502 passes through the outside of the circular hole and is rotatably connected thereto, so as to isolate the gear 505 from the hose 4 while ensuring the normal rotation of the winding rod 502 to prevent the hose 4 from being entangled on the gear 505 during the winding process.

[0035] See also Figure 3-4 The filter assembly 7 in this embodiment includes a filter tube 701 arranged at the lower end of the water suction pipe 6, three filter screens 702 are fixed inside the filter tube 701, and the filter assembly 7 also includes a protrusion 703 fixed to the left and right sides of the water suction pipe 6, and the left and right ends of the filter tube 701 are fixed with an insertion block 704, and the internal thread of the insertion block 704 is connected with a screw rod 706, and the opposite ends of the left and right screw rods 706 are rotatably connected to the limit block 705 through a bearing, and the opposite ends of the left and right screw rods 706 are fixed with a turning handle 707.

[0036] Secondly, a socket is provided at the top of the plug 704, and the protrusion 703 passes through the socket to the inside of the plug 704 and is plugged therein, so that the protrusion 703 can be located inside the plug 704, and limiting holes are provided on the opposite sides of the left and right protrusions 703, so that the limiting block 705 can be moved into the limiting hole, so that the protrusion 703 can be fixed in the plug 704.

[0037] At the same time, threaded holes are provided on the opposite sides of the left and right protrusions 703 , and the screw rod 706 penetrates the threaded holes to the inside of the insert block 704 and is threadedly connected thereto, so that the screw rod 706 can drive the limit block 705 to move inside the insert block 704 .

[0038] The working principle of the above embodiment is:

[0039] During use, when the foundation pit needs to be dewatered, the water collecting main pipe 1 is moved away from the foundation pit, and the motor 504 is opened, so that the output end of the motor 504 drives the gear 505 to rotate and mesh with the multiple tooth grooves 506 of the winding rod 502, so that the gear 505 can unwind the hose 4. When it is unwound to a suitable length, the suction pipe 6 can be inserted into the well point arranged in advance, so as to extend the distance between the foundation pit and the water collecting main pipe 1, avoid the discharged water from merging with the groundwater near the foundation pit, and affect the dewatering effect, and reduce the unstable dewatering caused by the loosening and subsidence of the soil near the foundation pit; and when When the water suction pipe 6 is inserted into the well point, the projection 703 is inserted into the insertion block 704 by abutting the filter tube 701 against its lower end, so that the screw rod 706 can be driven to rotate by the turning handle 707, so that the two screw rods 706 drive the two limit blocks 705 to move relative to each other, and the limit blocks 705 move into the limit holes of the projection 703, so that the filter assembly 7 can be installed on the water suction pipe 6, so that the three filter nets 702 can filter the silt in the water, which can effectively prevent the silt in the foundation pit from being pumped out together with the water by the water pump, reduce the flow of silt in the foundation pit, ensure that the internal structural strength of the foundation pit will not be affected, and facilitate the disassembly and replacement of the device.

Claims

1. A deep and large foundation pit dewatering device, comprising a water collecting main pipe (1) and two water pumps (3), characterized in that: The input end and output end of the water pump (3) are fixed and connected to a water pump pipe (2) and a drainage pipe respectively; the front end of the water collecting main pipe (1) is fixed and connected to a plurality of hoses (4); the outer surface of the hose (4) is provided with a winding assembly (5); the other end of the hose (4) is fixed with a water suction pipe (6); the lower end of the water suction pipe (6) is provided with a filter assembly (7); the input end of the water pump (3) is fixed and connected to the water pump pipe (2); and the output end of the water pump (3) is fixed and connected to the drainage pipe; The winding assembly (5) comprises a winding bin (501) arranged at the lower end of the water collecting main pipe (1); the upper and lower walls of the inner cavity of the winding bin (501) are rotatably connected to a winding rod (502) via bearings; a partition (503) is fixed to the top of the inner cavity of the winding bin (501); a motor (504) is fixed to the top of the inner cavity of the winding bin (501); a gear (505) is fixed to the output end of the motor (504); and a plurality of tooth grooves (506) are provided at the upper end of the outer surface of the winding rod (502).

2. A deep and large foundation pit dewatering device according to claim 1, characterized in that: The plurality of tooth grooves (506) have the same module as the gear (505), and the plurality of tooth grooves (506) are meshed with the gear (505).

3. A deep and large foundation pit dewatering device according to claim 1, characterized in that: A through hole is provided on the top of the winding bin (501), and the hose (4) passes through the through hole to the outside of the winding bin (501) and is slidably connected thereto.

4. A deep and large foundation pit dewatering device according to claim 1, characterized in that: A communicating hole is provided at the bottom of the winding bin (501), and the hose (4) passes through the communicating hole to the outside of the winding bin (501) and is slidably connected thereto.

5. The deep and large foundation pit dewatering device according to claim 1 is characterized by: A circular hole is formed at the lower end of the partition plate (503), and the winding rod (502) passes through the outside of the circular hole and is rotatably connected thereto.

6. A deep and large foundation pit dewatering device according to claim 1, characterized in that: The filter assembly (7) comprises a filter tube (701) arranged at the lower end of the water suction pipe (6), three filter screens (702) are fixed inside the filter tube (701), and the filter assembly (7) also comprises protrusions (703) fixed to the left and right sides of the water suction pipe (6), plug blocks (704) are fixed to the left and right ends of the filter tube (701), the plug blocks (704) are internally threadedly connected to screw rods (706), the opposite ends of the left and right screw rods (706) are rotatably connected to the limit block (705) through bearings, and the opposite ends of the left and right screw rods (706) are fixed to the turning handles (707).

7. A deep and large foundation pit dewatering device according to claim 6, characterized in that: The top of the plug block (704) is provided with a plug hole, and the protrusion (703) passes through the plug hole to the inside of the plug block (704) and is plugged into it.

8. The deep and large foundation pit dewatering device according to claim 6, characterized in that: A threaded hole is provided on the opposite sides of the left and right protrusions (703), and the screw rod (706) passes through the threaded hole to the inside of the insert block (704) and is threadedly connected thereto.

Images