A deep foundation pit dewatering device

Abstract

The present application relates to the field of foundation pit dewatering, and discloses a deep foundation pit dewatering device. In the present application, a deep foundation pit dewatering device comprises a foundation, a hydraulic rod is fixedly installed on the surface of the foundation, a lifting platform is fixedly connected to the top of the hydraulic rod, a pumping pipe is fixedly connected to the inside of the lifting platform, a sealing plug is fixedly connected to the surface of the pumping pipe and located at the lower end of the lifting platform, a foundation pit is opened inside the foundation, a real pipe is fixedly connected to the internal foundation pit of the foundation, a filter pipe is fixedly connected to the lower end of the real pipe, a rotating pipe is rotatably connected to the inside of the filter pipe, and a pumping pipe is slidably connected to the inside of the rotating pipe. The device can automatically detect and clean the pumping pipe to avoid clogging at the filter screen to affect the construction efficiency, and the lifting platform can be started to automatically stop the pumping work during cleaning, thereby reducing the construction burden and improving work efficiency.

Description

Technical Field

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

[0002] With the development of urbanization in my country, the utilization rate of underground space is getting higher and higher, and more and more projects involve foundation pits. In order to ensure the safe and stable excavation of foundation pits, foundation pit dewatering technology is one of the important influencing factors, which directly affects the construction environment and excavation cost of foundation pits. During the excavation of foundation pits, if the groundwater level is reached and exceeds the bottom of the excavation, groundwater will continue to infiltrate into the foundation pit, which is likely to cause engineering geological problems such as slope collapse and reduced bearing capacity of the foundation.

[0003] For example, the patent with announcement number CN221001097U discloses a deep foundation pit dewatering device, including: a filter frame, which is movably arranged in the deep foundation pit; a lifting mechanism, which includes a bearing plate, a bracket, a suspension rope and an electric roller, the bearing plate is installed on the top of the deep foundation pit, the bracket is installed on the bearing plate and is located above the deep foundation pit; a suspension rope is connected to the left and right sides of the top of the filter frame respectively; the electric roller is installed on the bearing plate and is arranged one-to-one with the suspension rope, and the upper end of each suspension rope passes through the bearing plate and the bracket and is wound around the corresponding electric roller; a filter pumping head, which is movably arranged in the cavity of the filter frame; a water pumping hose, whose lower end movably passes through the bearing plate and the top of the filter frame and is connected to the filter pumping head; and a water pump, which is arranged on the top of the foundation, and the upper end of the water pumping hose is connected to the water pump. The use of the dewatering device of the utility model can improve the filtering effect, avoid mud and sand blocking the filter holes, and avoid excessive mud and sand wearing the internal structure of the water pump.

[0004] However, the deep foundation pit dewatering device in the application lacks a structure for automatically detecting and cleaning the filter screen. When working for a long time in a deep foundation pit with a large water content, it may cause the pumping efficiency to deteriorate and thus affect the construction efficiency. Utility Model Content

[0005] The purpose of this application is to provide a deep foundation pit dewatering device to solve the problem that the above-mentioned deep foundation pit dewatering device lacks a structure for automatically detecting and cleaning the filter screen, which may cause the pumping efficiency to deteriorate and thus affect the construction efficiency when working for a long time in a deep foundation pit with a large water content.

[0006] The technical solution adopted in the present application is as follows: a deep foundation pit dewatering device, including a foundation, a hydraulic rod is fixedly installed on the surface of the foundation, the top of the hydraulic rod is fixedly connected to a lifting platform, the interior of the lifting platform is fixedly connected to a pumping pipe, the surface of the pumping pipe and the lower end of the lifting platform is fixedly connected to a sealing plug, a foundation pit is opened inside the foundation, a real pipe is fixedly connected to the internal foundation pit of the foundation, the lower end of the real pipe is fixedly connected to a filter pipe, the interior of the filter pipe is rotatably connected to a rotating pipe, and the interior of the rotating pipe is slidably connected to a pumping pipe.

[0007] By adopting the above technical solution, a solid pipe is pre-buried inside the foundation pit. The lower end of the solid pipe is connected to a filter pipe for filtering, which can filter the sand and gravel in the foundation pit and reduce the clogging of the pumping device. The rotating pipe sleeved inside the solid pipe can rotate, and the filter pipe can be cleaned during rotation to avoid clogging. The pumping pipe connected inside the rotating pipe is used for pumping water, and the water in the foundation pit that flows through the filter pipe to the bottom of the rotating pipe can be extracted. During use, after the real pipe, rotating pipe and pumping pipe are installed in sequence, the hydraulic rod can be started to drive the lifting platform to move downward. When the lifting platform moves downward, the pumping pipe and the sealing plug on the surface of the pumping pipe will be inserted into the interior of the rotating pipe to seal the top of the rotating pipe. Then the vacuum pump is started to extract water from the foundation pit, and the flow rate is tested through the flow detection platform. When the pumping rate decreases significantly, the vacuum pump is controlled by the console to stop pumping water, and the hydraulic rod is started to drive the lifting platform and the sealing plug to move upward. Then the rotating pipe is rotated to clean the filter tube with a cleaning brush. After cleaning, the hydraulic rod is started again to reinstall the pumping pipe for pumping water.

[0008] In a preferred embodiment, a flange ring is fixedly connected to the surface of the solid pipe, and bolts are connected to the internal threads of the flange ring.

[0009] By adopting the above technical solution, when facing foundation pits of different depths, the solid pipe can be extended and connected through flange rings and bolts according to the depth of the foundation pit, which is convenient for construction and segmented pumping.

[0010] In a preferred embodiment, a cleaning brush is fixedly connected to the surface of the rotating tube, and a threaded groove is formed on the top of the rotating tube.

[0011] By adopting the above technical solution, the cleaning brush can be driven to rotate when the rotating pipe rotates, and the cleaning brush can clean the filter pipe to avoid blockage that affects the pumping of water from the foundation pit.

[0012] In a preferred embodiment, a motor is fixedly mounted on the surface of the foundation, the top of the motor is rotatably connected to a second gear via a motor shaft, the side end of the second gear is meshingly connected to the first gear, and the internal thread of the first gear is connected to a rotating tube.

[0013] By adopting the above technical solution, the motor can drive the second gear to rotate through the motor shaft, and then drive the first gear and the rotating tube to rotate.

[0014] In a preferred embodiment, a flow detection platform is fixedly installed on the surface of the water suction pipe and located above the lifting platform, and a vacuum pump is fixedly installed on the top of the water suction pipe.

[0015] By adopting the above technical solution, the vacuum pump is used to pump water from the foundation pit, and the flow detection platform is used to detect the pumping rate.

[0016] In a preferred embodiment, a control console is fixedly installed on the surface of the lifting platform and located at the side end of the flow detection platform.

[0017] By adopting the above technical solution, when the flow detection station detects that the pumping rate has decreased significantly, the console control device can be used to stop pumping and rotate the cleaning device to clean the filter.

[0018] In a preferred embodiment, a drain pipe is fixedly connected to the rear end of the vacuum pump, and a drain channel is provided on the surface of the foundation at the lower end of the drain pipe.

[0019] By adopting the above technical solution, the water pumped out of the foundation pit can be transported to the drainage channel through the drainage pipe, which is convenient for construction workers to handle later.

[0020] In a preferred embodiment, the inner bottom end of the foundation is filled with a filter sand layer, and the inner top end of the foundation is filled with a sealing soil layer.

[0021] By adopting the above technical solution, after the solid pipe is installed in the foundation pit, the filter sand layer and the sealing soil layer are used to fill it in sequence to improve the stability of the side wall of the foundation pit and avoid collapse.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0023] In this application, after the real pipe, rotating pipe, and pumping pipe are installed in sequence, the hydraulic rod can be started to drive the lifting platform to move downward. When the lifting platform moves downward, it will drive the pumping pipe and the sealing plug on the surface of the pumping pipe to be inserted into the inside of the rotating pipe, and the top of the rotating pipe will be sealed. Then the vacuum pump is started to extract the water in the foundation pit, and the flow rate is detected through the flow detection platform. When the pumping rate decreases significantly, the vacuum pump is controlled by the console to stop pumping, and the hydraulic rod is started to drive the lifting platform and the sealing plug to move upward. Then the rotating pipe is rotated to clean the filter pipe with a cleaning brush. After cleaning, it is reset and pumped again. The pumping pipe can be automatically detected and cleaned, and the lifting platform is started to automatically stop pumping during cleaning, which reduces the construction burden and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a deep foundation pit dewatering device in this application;

[0025] Figure 2 It is a diagram of the filter tube and some of its adjacent structures in this application;

[0026] Figure 3 This is a diagram of the rotating tube and some of its adjacent structures in this application;

[0027] Figure 4 This is a plan view of the foundation surface device structure in this application.

[0028] Markings in the figure: 1. Foundation; 2. Sealing soil layer; 3. Filter sand layer; 4. Solid pipe; 5. Filter pipe; 6. Flange ring; 7. Bolt; 8. Drainage channel; 9. Rotating pipe; 10. Suction pipe; 11. Cleaning brush; 12. Threaded groove; 13. Sealing plug; 14. First meshing wheel; 15. Second meshing wheel; 16. Motor; 17. Hydraulic rod; 18. Lifting platform; 19. Flow detection platform; 20. Control console; 21. Vacuum pump; 22. Drainage pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are 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] Example:

[0031] Reference Figure 1-4A deep foundation pit dewatering device comprises a foundation 1, a hydraulic rod 17 is fixedly installed on the surface of the foundation 1, a lifting platform 18 is fixedly connected to the top of the hydraulic rod 17, a pumping pipe 10 is fixedly connected inside the lifting platform 18, a sealing plug 13 is fixedly connected to the surface of the pumping pipe 10 and located at the lower end of the lifting platform 18, a foundation pit is opened inside the foundation 1, a solid pipe 4 is fixedly connected to the foundation pit inside the foundation 1, a filter pipe 5 is fixedly connected to the lower end of the solid pipe 4, a rotating pipe 9 is rotatably connected inside the filter pipe 5, and a pumping pipe 10 is slidably connected inside the rotating pipe 9. A deep foundation pit for pumping water is opened inside the foundation 1, and a solid pipe 4 is pre-buried inside the foundation pit. The lower end of the solid pipe 4 is connected to the filter pipe 5 for filtering, which can filter the sand and gravel in the foundation pit to reduce the clogging of the pumping device. The rotating pipe 9 sleeved inside the solid pipe 4 can rotate, and the filter pipe 5 can be cleaned during rotation to avoid clogging. The pumping pipe 10 connected inside the rotating pipe 9 is used for pumping water, and the water flowing from the foundation pit through the filter pipe 5 to the bottom of the rotating pipe 9 can be extracted. In use, after the real pipe 4, the rotating pipe 9, and the pumping pipe 10 are installed in sequence, the hydraulic rod 17 can be started to drive the lifting platform 18 to move downward. When the lifting platform 18 moves downward, the pumping pipe 10 and the sealing plug 13 on the surface of the pumping pipe 10 will be inserted into the inside of the rotating pipe 9 to seal the top of the rotating pipe 9. Then, the vacuum pump 21 is started to extract the water in the foundation pit, and the flow rate is detected through the flow detection platform 19. When the pumping rate decreases significantly, the vacuum pump 21 is controlled by the control console 20 to stop pumping water, and the hydraulic rod 17 is started to drive the lifting platform 18 and the sealing plug 13 to move upward. Then, the rotating pipe 9 is rotated to clean the filter pipe 5 with the cleaning brush 11. After the cleaning is completed, it is reset and pumped again.

[0032] Reference Figure 1 and Figure 2 The surface of the solid pipe 4 is fixedly connected with a flange ring 6, and the internal thread of the flange ring 6 is connected with a bolt 7. The solid pipe 4 can be extended and connected through the flange ring 6 and the bolt 7 according to the depth of the foundation pit, which is convenient for construction and segmented pumping.

[0033] Reference Figure 1 and Figure 3 A cleaning brush 11 is fixedly connected to the surface of the rotating tube 9, and a thread groove 12 is provided on the top of the rotating tube 9. When the rotating tube 9 rotates, the cleaning brush 11 can be driven to rotate, and the cleaning brush 11 can clean the filter tube 5 to avoid blockage that affects the pumping of the foundation pit. The thread groove 12 is used to install the first gear 14.

[0034] Reference Figure 1 and Figure 4A motor 16 is fixedly installed on the surface of the foundation 1, and the top of the motor 16 is rotatably connected to the second gear 15 through the motor shaft, and the side end of the second gear 15 is meshedly connected to the first gear 14, and the internal thread of the first gear 14 is connected to the rotating tube 9. The starting motor 16 can drive the second gear 15 to rotate through the motor shaft, thereby driving the first gear 14 and the rotating tube 9 to rotate.

[0035] Reference Figure 4 A flow detection platform 19 is fixedly installed on the surface of the water pumping pipe 10 and above the lifting platform 18, and a vacuum pump 21 is fixedly installed on the top of the water pumping pipe 10. The vacuum pump 21 is used to pump water from the foundation pit, and the flow detection platform 19 is used to detect the pumping rate.

[0036] Reference Figure 4 A control console 20 is fixedly installed on the surface of the lifting platform 18 and at the side end of the flow detection platform 19. When the flow detection platform 19 detects that the pumping rate decreases significantly, the control console 20 control device can stop pumping and rotate the cleaning device to clean the filter.

[0037] Reference Figure 1 and Figure 4 The rear end of the vacuum pump 21 is fixedly connected with a drain pipe 22, and a drain channel 8 is provided on the surface of the foundation 1 and at the lower end of the drain pipe 22. The water pumped out of the foundation pit can be transported to the drain channel 8 through the drain pipe 22.

[0038] Reference Figure 1 The bottom of the foundation 1 is filled with a filter sand layer 3, and the top of the foundation 1 is filled with a sealing soil layer 2. After the foundation pit is punched, the filter sand layer 3 and the sealing soil layer 2 can be filled in sequence after the solid pipe 4 is installed to improve the stability of the side wall of the foundation pit and avoid collapse.

[0039] The implementation principle of an embodiment of a deep foundation pit dewatering device of the present application is as follows: a deep foundation pit for pumping water is opened inside the foundation 1, and a solid pipe 4 is pre-buried inside the foundation pit. The lower end of the solid pipe 4 is connected to a filter pipe 5 for filtering, which can filter the sand and gravel in the foundation pit to reduce the clogging of the pumping device. The rotating pipe 9 sleeved inside the solid pipe 4 can rotate, and the filter pipe 5 can be cleaned during rotation to avoid clogging. After the foundation pit is punched, the filter sand layer 3 and the sealing soil layer 2 can be filled in sequence after the solid pipe 4 is installed to improve the stability of the side wall of the foundation pit and avoid collapse. In use, after the real pipe 4, rotating pipe 9, and pumping pipe 10 are installed in sequence, the hydraulic rod 17 can be started to drive the lifting platform 18 to move downward. When the lifting platform 18 moves downward, the pumping pipe 10 and the sealing plug 13 on the surface of the pumping pipe 10 will be inserted into the inside of the rotating pipe 9 to seal the top of the rotating pipe 9. Then the vacuum pump 21 is started to extract the water in the foundation pit, and the flow detection is performed through the flow detection platform 19. When the pumping rate decreases significantly, the vacuum pump 21 is controlled by the control console 20 to stop pumping water, and the hydraulic rod 17 is started to drive the lifting platform 18 and the sealing plug 13 to move upward. Then the rotating pipe 9 is rotated to clean the filter pipe 5 with the cleaning brush 11. After the cleaning is completed, it is reset and pumped again. The real pipe 4 can be extended and connected through the flange ring 6 and the bolt 7 according to the depth of the foundation pit, which is convenient for construction and segmented pumping. The water extracted from the foundation pit can be transported to the drainage channel 8 through the drainage pipe 22. The device can automatically detect and clean the pumping pipe to avoid clogging of the filter screen and affect the construction efficiency. The lifting platform can be started to automatically stop the pumping work during cleaning, which reduces the construction burden and improves work efficiency.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A deep foundation pit dewatering device, comprising a foundation (1), characterized in that: A hydraulic rod (17) is fixedly installed on the surface of the foundation (1), and a lifting platform (18) is fixedly connected to the top of the hydraulic rod (17). A water pumping pipe (10) is fixedly connected to the interior of the lifting platform (18). A sealing plug (13) is fixedly connected to the surface of the water pumping pipe (10) and located at the lower end of the lifting platform (18). A foundation pit is opened inside the foundation (1), and a solid pipe (4) is fixedly connected to the foundation pit inside the foundation (1). A filter pipe (5) is fixedly connected to the lower end of the solid pipe (4). A rotating pipe (9) is rotatably connected to the interior of the filter pipe (5), and a water pumping pipe (10) is slidably connected to the interior of the rotating pipe (9).

2. A deep foundation pit dewatering device as claimed in claim 1, characterized in that: A flange ring (6) is fixedly connected to the surface of the solid pipe (4), and bolts (7) are threadedly connected to the interior of the flange ring (6).

3. A deep foundation pit dewatering device as claimed in claim 1, characterized in that: A cleaning brush (11) is fixedly connected to the surface of the rotating tube (9), and a threaded groove (12) is formed on the top of the rotating tube (9).

4. A deep foundation pit dewatering device as claimed in claim 1, characterized in that: A motor (16) is fixedly mounted on the surface of the foundation (1); the top of the motor (16) is rotatably connected to a second gear (15) via a motor shaft; the side end of the second gear (15) is meshingly connected to a first gear (14); and the internal thread of the first gear (14) is connected to a rotating tube (9).

5. A deep foundation pit dewatering device as claimed in claim 1, characterized in that: A flow detection platform (19) is fixedly installed on the surface of the water pumping pipe (10) and located above the lifting platform (18), and a vacuum pump (21) is fixedly installed on the top of the water pumping pipe (10).

6. A deep foundation pit dewatering device as claimed in claim 1, characterized in that: A control console (20) is fixedly installed on the surface of the lifting platform (18) and located at the side end of the flow detection platform (19).

7. A deep foundation pit dewatering device as claimed in claim 5, characterized in that: The rear end of the vacuum pump (21) is fixedly connected to a drainage pipe (22), and a drainage channel (8) is provided on the surface of the foundation (1) at the lower end of the drainage pipe (22).

8. A deep foundation pit dewatering device as claimed in claim 1, characterized in that: The inner bottom end of the foundation (1) is filled with a filter sand layer (3), and the inner top end of the foundation (1) is filled with a sealing soil layer (2).

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