Foundation pit dewatering well structure

Abstract

The utility model discloses a foundation pit dewatering well structure and belongs to the field of dewatering wells, the foundation pit dewatering well structure comprises a dewatering well body and a concrete layer, a bottom plate is arranged at the inner bottom of the dewatering well body, an intercepting pipe is fixedly assembled at the bottom of the bottom plate, a plurality of water permeable holes are formed in the outer edge of the intercepting pipe, and filter screens are fixedly assembled on the inner walls of the water permeable holes; the inner wall of the intercepting pipe is in threaded connection with a sealing cover; the safety of the periphery of the top of the dewatering well body can be improved by arranging the fence, it is guaranteed that workers cannot fall into the inner cavity of the dewatering well body, meanwhile, the baffle can be pulled to the topmost position of the dewatering well body through the cooperation of the hanging ring and the rope, and then floating objects accidentally falling from the top of the baffle are removed; the problem that an existing device cannot conveniently clean and take out floating objects in the dewatering well is solved, and the problem that a large number of floating objects are accumulated at the bottom of the dewatering well to affect the environmental protection property of the dewatering well is solved.

Description

Technical Field

[0001] The present application relates to the technical field of dewatering wells, and in particular to a dewatering well structure for a foundation pit. Background Art

[0002] Foundation pit dewatering mainly includes two methods: sump dewatering and well-point dewatering. The well-point dewatering method has the characteristics of large drainage volume, deep dewatering (15-50m), and no soil restrictions. It is suitable for dewatering projects with abundant groundwater, deep foundation pits (>10m), and large foundation pit areas. The well-point dewatering method is a construction process in which a certain number of dewatering wells are constructed around the foundation pit before excavation, and a filter (well) is welded at the bottom of the dewatering well. The groundwater in the well is pumped out using pumping equipment to keep the excavated soil dry at all times.

[0003] In the patent with the authorization announcement number CN214940307U, the drainage well structure in the foundation pit includes a drainage well hole, a filter pipe arranged in the drainage well hole, a submersible pump arranged in the filter pipe, and a pumping pipe connected to the submersible pump; the bottom opening of the filter pipe is sealed with a bottom cover with a hole, the upper pipe wall of the filter pipe is provided with an installation through hole for the pumping pipe to pass through, one end of the pumping pipe is connected to the submersible pump, and the other end of the pumping pipe extends from the side of the filter pipe through the installation through hole, and the top opening of the filter pipe is sealed with a top cover with a hole. The drainage well structure in the foundation pit disclosed by the present invention makes the interior of the filter pipe basically isolated from the outside air, so that through the extraction action of the submersible pump, a negative pressure state can be formed inside the filter pipe, so that the groundwater around the drainage well hole can quickly enter the filter pipe, thereby effectively improving the drainage effect, so that when excavating a large-section deep foundation pit, the number of drainage wells can be reduced, thereby reducing the construction cost.

[0004] When the above device is implemented, it is not convenient to protect the precipitation well hole, and the safety is insufficient. In addition, in heavy rainfall weather, a large amount of floating objects on the ground will be discharged into the precipitation well, and the above device is not convenient for cleaning and removing the floating objects in the precipitation well, which will cause a large amount of floating objects to accumulate at the bottom of the precipitation well, affecting the environmental protection of the precipitation well. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a foundation pit dewatering well structure, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a foundation pit dewatering well structure, including a dewatering well body and a concrete layer, a bottom plate is provided at the inner bottom of the dewatering well body, an interception pipe is fixedly installed at the bottom of the bottom plate, a plurality of water permeable holes are opened at the outer edge of the interception pipe, a filter is fixedly installed on the inner wall of the water permeable hole, a sealing cover is threadedly connected to the inner wall of the interception pipe, two handles are symmetrically fixedly installed on the top of the sealing cover, a submersible pump is provided on the top of the bottom plate, a water pipe is fixedly connected to the output end of the submersible pump, a baffle is fixedly installed on the top of the sealing cover, and a drainage hole is opened on the top of the baffle.

[0007] As a preferred embodiment, a fence is fixedly installed on the top of the concrete layer, and after the concrete layer is laid, it is located around the top of the precipitation well body.

[0008] By adopting the above-mentioned technical scheme, the concrete layer can be used to increase the firmness of the soil on the surface of the precipitation well body to ensure that it will not collapse at will into the inner cavity of the precipitation well body. The fence can be used to increase the safety around the top of the precipitation well body to ensure that the staff will not fall into the inner cavity of the precipitation well body, thereby improving the safety of the staff.

[0009] As a preferred embodiment, the inner wall of the intercepting tube is provided with an internal thread, the outer edge of the sealing cover is provided with an external thread, the sealing cover is threadedly connected to the inner wall of the intercepting tube, a through hole is provided in the middle of the sealing cover, the water pipe is arranged on the inner wall of the through hole, and is threadedly connected to the inner wall of the intercepting tube by the sealing cover.

[0010] By adopting the above technical solution, the sealing cover can be stably installed on the inner wall of the intercepting tube, thereby preventing foreign matter from entering the inner cavity of the intercepting tube, thereby protecting the submersible pump and ensuring that foreign matter does not enter the interior and cause blockage.

[0011] As a preferred embodiment, the outer diameter of the baffle is matched with the inner wall diameter of the precipitation well body, and the number of the water holes is a plurality of holes evenly distributed in a circular shape on the inner wall of the precipitation well body.

[0012] By adopting the above technical solution, the baffle can be used to intercept foreign objects that accidentally fall on the inner wall of the precipitation well body, ensuring that they will not fall to the inner bottom position of the precipitation well body.

[0013] As a preferred embodiment, two lifting rings are fixedly mounted on the top of the baffle, and the two lifting rings are symmetrically arranged at the top position of the baffle.

[0014] By adopting the above technical solution, the baffle can be pulled to the topmost position of the precipitation well body in conjunction with the rope, and then the foreign matter accumulated on the top of the baffle can be cleared.

[0015] As a preferred embodiment, one end of the water pipe away from the submersible pump is arranged above the concrete layer, and the one end of the water pipe away from the submersible pump is detachably connected to the fence via a rope.

[0016] By adopting the above technical solution, the operation of the submersible pump can pump rainwater accumulated on the inner wall of the precipitation well body to a location outside the precipitation well body using a water pipe.

[0017] Beneficial effects of this application:

[0018] 1. The foundation pit dewatering well structure can increase the safety around the top of the dewatering well body by setting a fence, thereby ensuring that workers will not fall into the inner cavity of the dewatering well body. At the same time, the baffle can be pulled to the top of the dewatering well body by using a lifting ring and a rope, thereby clearing away floating objects accidentally dropped from the top of the baffle. This avoids the problem that existing devices are inconvenient for cleaning and removing floating objects in the dewatering well, thereby solving the problem that a large amount of floating objects accumulate at the bottom of the dewatering well, affecting the environmental protection of the dewatering well.

[0019] 2. The foundation pit dewatering well structure can protect the submersible pump by setting a filter net, ensuring that impurities in the water will not enter the inner cavity of the submersible pump, thereby ensuring the service life of the submersible pump. At the same time, the sealing cover and intercepting tube are used to facilitate the removal of the filter net for cleaning, thereby improving the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the precipitation well body of this application;

[0022] Figure 3 This is a schematic diagram of the expanded structure of this application;

[0023] Figure 4 This is a schematic diagram of the submersible pump structure of the present application.

[0024] Numbers in the figure: 1. precipitation well body; 2. concrete layer; 3. bottom plate; 4. interception pipe; 5. water permeable hole; 6. filter net; 7. sealing cover; 8. handle; 9. submersible pump; 10. water pipe; 11. baffle; 12. drain hole; 13. lifting ring; 14. fence. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0026] Reference Figure 1-4 The foundation pit drainage well structure includes a drainage well body 1 and a concrete layer 2. A bottom plate 3 is provided at the inner bottom of the drainage well body 1. An interception pipe 4 is fixedly installed at the bottom of the bottom plate 3. A plurality of water permeable holes 5 are opened at the outer edge of the interception pipe 4. A filter screen 6 is fixedly installed on the inner wall of the water permeable hole 5. A sealing cover 7 is threadedly connected to the inner wall of the interception pipe 4. Two handles 8 are symmetrically fixedly installed on the top of the sealing cover 7. A submersible pump 9 is provided on the top of the bottom plate 3. A water pipe 10 is fixedly connected to the output end of the submersible pump 9. A baffle 11 is fixedly installed on the top of the sealing cover 7. A drainage hole 12 is opened on the top of the baffle 11.

[0027] See also Figure 1 A fence 14 is fixedly installed on the top of the concrete layer 2. After the concrete layer 2 is laid, it is located around the top of the precipitation well body 1, so that the concrete layer 2 can be used to increase the firmness of the soil on the surface of the precipitation well body 1 to ensure that it will not collapse into the inner cavity of the precipitation well body 1 at will. The fence 14 can increase the safety around the top of the precipitation well body 1 to ensure that the staff will not fall into the inner cavity of the precipitation well body 1, thereby improving the safety of the staff.

[0028] See also Figure 3 The inner wall of the intercepting tube 4 is provided with an internal thread, the outer edge of the sealing cover 7 is provided with an external thread, the sealing cover 7 is threadedly connected to the inner wall of the intercepting tube 4, a through hole is provided in the middle of the sealing cover 7, and the water pipe 10 is arranged on the inner wall of the through hole. The sealing cover 7 is threadedly connected to the inner wall of the intercepting tube 4, so that the sealing cover 7 can be stably installed on the inner wall of the intercepting tube 4, thereby preventing foreign matter from entering the inner cavity of the intercepting tube 4, and thus protecting the submersible pump 9 to ensure that foreign matter does not enter the interior thereof and cause blockage.

[0029] See also Figure 2 and Figure 3 The outer diameter of the baffle 11 is adapted to the inner wall diameter of the precipitation well body 1, and the number of the water holes 12 is a plurality of ring-shaped and evenly distributed on the inner wall of the precipitation well body 1, so that the baffle 11 can intercept foreign objects that accidentally fall from the inner wall of the precipitation well body 1 to ensure that they will not fall to the inner bottom of the precipitation well body 1.

[0030] See also Figure 3 Two lifting rings 13 are fixedly installed on the top of the baffle 11, and the two lifting rings 13 are symmetrically arranged at the top position of the baffle 11, so that the baffle 11 can be pulled to the topmost position of the precipitation well body 1 in conjunction with the rope, and then the foreign matter accumulated on the top of the baffle 11 can be cleared.

[0031] See also Figure 2The end of the water pipe 10 away from the submersible pump 9 is arranged above the concrete layer 2, and the end of the water pipe 10 away from the submersible pump 9 is detachably connected to the fence 14 through a rope, so that the submersible pump 9 can be operated to pump rainwater accumulated on the inner wall of the precipitation well body 1 to a position outside the precipitation well body 1 through the water pipe 10.

[0032] Working principle: When using the device, first place the submersible pump 9 at the top position of the bottom plate 3, then pass the end of the water pipe 10 away from the submersible pump 9 through the middle through hole of the sealing cover 7 and the inner wall position of the baffle 11, and then place the bottom plate 3 to the inner bottom position of the precipitation well body 1, so as to place the baffle 11 to the top position of the sealing cover 7, and then the end of the water pipe 10 away from the submersible pump 9 can be fixedly connected to the fence 14 through a rope, and the accumulated water in the inner cavity of the precipitation well body 1 can be discharged to the outside by starting the submersible pump 9, and the filter net 6 can protect the submersible pump 9, ensuring that impurities in the water will not enter the inner cavity position of the submersible pump 9, thereby ensuring the service life of the submersible pump 9, and at the same time, the baffle 11 can be pulled to the topmost position of the precipitation well body 1 by using the lifting ring 13 and the rope, and then the foreign objects accidentally dropped on the top of the baffle 11 can be cleared.

[0033] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A foundation pit drainage well structure, comprising a drainage well body (1) and a concrete layer (2), characterized in that: The bottom of the precipitation well body (1) is provided with a bottom plate (3), the bottom of the bottom plate (3) is fixedly equipped with an interception pipe (4), the outer edge of the interception pipe (4) is provided with a plurality of water permeable holes (5), the inner wall of the water permeable hole (5) is fixedly equipped with a filter screen (6), the inner wall of the interception pipe (4) is threadedly connected with a sealing cover (7), the top of the sealing cover (7) is symmetrically fixedly equipped with two handles (8), the top of the bottom plate (3) is provided with a submersible pump (9), the output end of the submersible pump (9) is fixedly connected with a water pipe (10), the top of the sealing cover (7) is fixedly equipped with a baffle (11), and the top of the baffle (11) is provided with a water discharge hole (12).

2. The foundation pit dewatering well structure according to claim 1 is characterized in that: A fence (14) is fixedly mounted on the top of the concrete layer (2); after the concrete layer (2) is laid, it is located around the top of the precipitation well body (1).

3. The foundation pit dewatering well structure according to claim 1 is characterized in that: The inner wall of the intercepting tube (4) is provided with an internal thread, the outer edge of the sealing cover (7) is provided with an external thread, the sealing cover (7) is threadedly connected to the inner wall of the intercepting tube (4), a through hole is provided in the middle of the sealing cover (7), and the water pipe (10) is arranged on the inner wall of the through hole.

4. The foundation pit dewatering well structure according to claim 1 is characterized in that: The outer diameter of the baffle (11) is matched to the inner wall diameter of the precipitation well body (1), and the number of the water discharge holes (12) is a plurality of holes evenly distributed in a ring shape on the inner wall of the precipitation well body (1).

5. The foundation pit dewatering well structure according to claim 1 is characterized in that: Two lifting rings (13) are fixedly mounted on the top of the baffle (11), and the two lifting rings (13) are symmetrically arranged at the top of the baffle (11).

6. The foundation pit dewatering well structure according to claim 1, characterized in that: One end of the water pipe (10) away from the submersible pump (9) is arranged above the concrete layer (2), and the end of the water pipe (10) away from the submersible pump (9) is detachably connected to the fence (14) via a rope.

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