A device for local dewatering of a pit

Abstract

The utility model relates to the technical field of building engineering discloses a kind of for local hidden well precipitation device in foundation pit, including cushion, the right side of the cushion is close to the middle place and is provided with drainage mechanism, the drainage mechanism is for precipitation, the top left and right sides of the cushion are all provided with multiple dismounting mechanism, the dismounting mechanism is for dismounting, the top of the cushion is close to the middle place and is provided with limiting mechanism, the top of the cushion is fixedly connected with raft, the top left side of the raft is provided with cover mechanism, the top of the cushion is close to the middle place and is provided with antiskid mechanism.In the utility model, start sewage pump, then sewage pump will suck sewage into drain pipe, then pass through water stop ring through drain pipe, and the water stop ring is fixed on the cushion through steel pipe, the water stop ring can stop water in time, realize the effect of preventing silt blockage efficiently, and increase land adaptability.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a device for localized dewatering of underground wells in foundation pits. Background Technology

[0002] The localized underground well dewatering device in the foundation pit mainly consists of three parts: well pipe, filter layer, and drainage system. The well pipe is usually made of steel or PVC pipe, with filter holes and a filter screen around its perimeter to prevent silt from entering and clogging the channels. The filter layer is generally composed of coarse sand and gravel, laid around the well pipe to further trap soil particles and ensure clean effluent. The drainage system includes a water pump, water pipeline, and a collection well. The water pump extracts groundwater from the well pipe and discharges it through the pipeline into the collection well, where it is then channeled to the outside of the site. The working principle of this device is to use gravity and the suction effect of the water pump to form a dewatering funnel around the underground well, lowering the groundwater level in the local area and keeping the foundation pit soil dry, creating favorable conditions for foundation construction. At the same time, by controlling the dewatering range, it reduces the impact on the surrounding environment. This device is mainly suitable for areas with localized upper stagnant water, unconfined water layers, and confined water in the foundation pit, and is especially suitable for dealing with complex geological conditions and situations where traditional large-area dewatering methods are ineffective.

[0003] A search revealed Chinese Patent Publication No. CN212388579U, which discloses a foundation pit dewatering device, comprising: a dewatering well vertically excavated underground and located outside the excavated foundation pit; a mud pit located in the unexcavated foundation pit; an underground pipeline connected to the dewatering well and the mud pit; multiple underground limiting blocks forming a support surface that is engaged with the bottom of the pipeline; a shock-absorbing layer located at the bottom of the pipeline; and a backflow valve located on the pipeline to prevent water in the pipeline from flowing back into the dewatering well. This invention conceals the pipeline underground, reducing its impact on the site and solving the problem of increased workload due to site size limitations caused by dewatering. However, while this device addresses the issue of increased workload due to site size limitations caused by dewatering, it cannot solve the problems of drainage ditches being easily blocked by silt and the poor adaptability of wellpoint dewatering to soil layers. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a device for localized underground well dewatering in foundation pits, which aims to improve the problems of drainage ditches being easily blocked by silt and sand and the poor adaptability of well point dewatering to soil layers in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for localized underground well dewatering in a foundation pit, comprising a cushion layer, a drainage mechanism located near the middle on the right side of the cushion layer for dewatering, multiple disassembly mechanisms located on the left and right sides of the top of the cushion layer for disassembly, a limiting mechanism located near the middle of the top of the cushion layer, a raft plate fixedly connected to the top of the cushion layer, a covering mechanism located on the left side of the top of the raft plate, and an anti-slip mechanism located near the middle of the top of the cushion layer;

[0006] The drainage mechanism includes a filter layer, the top of which is fixedly connected to the bottom of the pad layer. A sewage pump is connected to the bottom of the inner wall of the filter layer, and a drain pipe is connected to the top of the sewage pump. A flange is connected to the outer wall of the drain pipe near the middle. A blind plate is fixedly connected to the upper end of the inner wall of the drain pipe, and a water-stopping component is provided at the lower end of the outer wall of the drain pipe.

[0007] The above technical solution includes a cushion layer. A drainage mechanism is located on the right side of the cushion layer near the center. The main function of this drainage mechanism is to reduce waterlogging and ensure a dry environment inside the cushion layer. Multiple disassembly mechanisms are evenly distributed on the top left and right sides of the cushion layer for easy disassembly and maintenance of components. A limit mechanism is also provided on the top of the cushion layer near the center to ensure the stability of the overall structure. A raft plate is fixedly connected to the top of the cushion layer, and a covering mechanism is located on the top left side of the raft plate to cover and protect certain key components. The top of the cushion layer near the center... Anti-slip mechanisms are also provided to ensure safety. The specific structure of the drainage mechanism includes a filter layer, the top of which is fixedly connected to the bottom of the pad layer to ensure its stability. A sewage pump is connected to the bottom of the inner wall of the filter layer, and a drain pipe is connected to the top of the sewage pump through a pipe to effectively drain the accumulated water. A flange is connected to the outer wall of the drain pipe near the middle position for connecting and fixing the drain pipe to other components. A blind plate is fixedly connected to the upper part of the inner wall of the drain pipe to prevent backflow of water. A water-stop component is also provided at the lower part of the outer wall of the drain pipe to ensure sealing and prevent water leakage during the drainage process.

[0008] As a further description of the above technical solution:

[0009] The disassembly mechanism includes multiple baffles, the bottom of each baffle is fixedly connected to the top left and right sides of the raft plate, and a fixing rod is fixedly connected between adjacent baffles. A cylindrical sleeve is rotatably connected to the outer wall of the fixing rod, and a connecting plate is fixedly connected to the outward side of each cylindrical sleeve. Multiple snap-fit ​​components are provided on the inner wall of each connecting plate.

[0010] The above technical solution describes a disassembly mechanism consisting of multiple baffles. The bottom of each baffle is fixedly connected to the top left and right sides of the raft plate to ensure its stability. Each baffle is connected to a fixed rod, and a cylindrical sleeve is rotatably connected to the outer wall of the fixed rod, allowing the cylindrical sleeve to rotate flexibly on the fixed rod. Each cylindrical sleeve is fixedly connected to a connecting plate on its outward side, providing additional structural support. Each connecting plate has multiple snap-fit ​​components on its inner wall to ensure the stability and reliability of the entire disassembly mechanism.

[0011] As a further description of the above technical solution:

[0012] The water-stopping assembly includes multiple steel pipes, the bottom of which is fixedly connected to the top of the padding layer, and a water-stopping ring is fixedly connected to the top of which.

[0013] Through the above technical solution: the water-stopping component is specifically composed of multiple steel pipes, the bottom of the steel pipes is fixedly connected to the top of the padding layer, ensuring the stability and durability of the entire component. At the top of each steel pipe, a water-stopping ring is provided to effectively prevent water penetration, enhance the overall performance of the water-stopping component, and improve its reliability and service life in practical applications.

[0014] As a further description of the above technical solution:

[0015] The buckle assembly includes a connecting post, the bottom of which is fixedly connected to the top of the pad near the edge, the outer wall of which is slidably connected to the inner wall of the connecting plate, the top of which is threaded with an external thread, and a cylindrical cap is fixedly connected to the top of the external thread.

[0016] The above technical solution describes a snap-fit ​​assembly comprised of multiple parts, including a connecting post. The bottom of the connecting post is fixedly connected to the top of the padding layer near its edge to ensure the stability and robustness of the entire structure. The outer wall of the connecting post is slidably connected to the inner wall of the connecting plate, allowing the connecting post to slide and adjust flexibly within a certain range to adapt to different installation requirements. An external thread is provided at the top of the connecting post, which is threadedly connected to the connecting post to ensure the reliability and durability of the connection. A cylindrical cap is further fixedly connected to the top of the external thread, providing protection and effectively improving the ease of installation and stability of the equipment.

[0017] As a further description of the above technical solution:

[0018] The limiting mechanism includes a limiting rod, the bottom of which is fixedly connected to the top left side of the pad layer near the middle. A cylindrical groove is provided at the bottom of the raft plate, and the inner wall of the cylindrical groove is slidably connected to the outer wall of the limiting rod.

[0019] Through the above technical solution: the limiting mechanism is specifically composed of a limiting rod. The bottom position of the limiting rod is fixedly connected to the top left side of the pad to ensure its stability and functionality. The bottom of the raft plate is provided with a cylindrical groove. The inner wall of the cylindrical groove is slidably connected to the outer wall of the limiting rod, so that the limiting rod can slide freely in the cylindrical groove, thereby realizing the limiting and guiding function of the raft plate and ensuring the stability and motion accuracy of the entire structure.

[0020] As a further description of the above technical solution:

[0021] The anti-slip mechanism includes an anti-slip mat, the bottom of which is fixedly connected to the top of the raft board, and multiple front baffles are fixedly connected to the top of the raft board near the middle.

[0022] Through the above technical solution: the anti-slip mechanism is specifically composed of an anti-slip pad, the bottom of which is fixedly connected to the top of the raft plate to ensure its stability. On the top of the raft plate, in the area near the middle, multiple front baffles are evenly arranged and fixedly connected, which enhances the stability of the overall structure and further improves the anti-slip effect, ensuring that it can effectively prevent slippage during use and guaranteeing safety.

[0023] As a further description of the above technical solution:

[0024] The covering mechanism includes multiple baffles, each of which is rotatably connected to the inner wall of the raft plate on its outward side, and multiple shielding plates are fixedly connected to each other between adjacent baffles.

[0025] Through the above technical solution: the covering mechanism is mainly composed of multiple baffles, each of which is rotatably connected to the inner wall of the raft plate on its outward side, allowing the baffles to rotate within a certain range, thereby achieving flexible adjustment of the covering area. In addition, in order to enhance the covering effect and structural stability, multiple shielding plates are fixedly connected between adjacent positions of the multiple baffles, filling the gaps between the baffles and further improving the overall sealing and shielding performance of the covering mechanism, ensuring that it can effectively play its role during use.

[0026] As a further description of the above technical solution:

[0027] A waterproof square block is fixedly connected to the lower end of the outer wall of the drain pipe. The bottom of the waterproof square block is fixedly connected to the top of the filter layer. The waterproof square block is used to prevent leakage.

[0028] Through the above technical solution: a waterproof square block is fixedly connected to the lower end of the outer wall of the drain pipe. The main function of the waterproof square block is to effectively prevent water leakage, ensure the sealing and leak-proof performance of the entire drainage system, and thus ensure the normal operation and safe use of the drainage system.

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, during the excavation process, the internal water will enter the interior of the filter layer through the bedding layer. When there is too much water inside, the sewage pump is started, and the sewage pump will pump the sewage into the drain pipe. Then, the sewage passes through the drain pipe and the water-stop ring. At the same time, the water-stop ring is fixed to the bedding layer by the steel pipe. The water-stop ring can stop the water in time. Then the sewage continues to rise through the flange. The flange can disassemble and replace the sewage pump, which can effectively prevent the silt blockage and increase the adaptability of the land.

[0031] 2. In this utility model, when it is necessary to disassemble the raft plate, first rotate the cylindrical cover. At this time, the cylindrical cover will drive the external thread to rotate upward until the external thread leaves the connecting column. Then rotate the connecting plate upward. At this time, the connecting plate drives the cylindrical sleeve to rotate along the outer wall of the fixing rod until it leaves the connecting column. At this time, the raft plate can be lifted, realizing the function of disassembling and repairing the raft plate. Attached Figure Description

[0032] Figure 1 This is a front perspective view of a localized underground well dewatering device for foundation pits proposed in this utility model;

[0033] Figure 2 This is a top view of a localized underground well dewatering device for foundation pits proposed in this utility model;

[0034] Figure 3 This is a partial structural breakdown diagram of a connecting column for a localized underground well dewatering device in a foundation pit, as proposed in this utility model.

[0035] Figure 4 This is a partial structural breakdown diagram of a sewage pump for a localized underground well dewatering device in a foundation pit, as proposed in this utility model.

[0036] Figure 5 This is a cross-sectional view of a subbase structure for a localized underground well dewatering device in a foundation pit, as proposed in this utility model.

[0037] Figure 6 This is a partial structural breakdown diagram of a drainage pipe for a localized underground well dewatering device in a foundation pit, as proposed in this utility model.

[0038] Legend:

[0039] 1. Subbase; 2. Drainage Mechanism; 201. Filter Layer; 202. Sewage Pump; 203. Drainage Pipe; 204. Blind Flange; 205. Flange; 206. Water-stopping Component; 2061. Steel Pipe; 2062. Water-stopping Ring; 3. Disassembly Mechanism; 301. Baffle One; 302. Fixing Rod; 303. Cylindrical Sleeve; 304. Connecting Plate; 305. Snap-fit ​​Assembly; 3051. Connecting Column; 3052. External Thread; 3053. Cylindrical Cover; 4. Limiting Mechanism; 401. Limiting Rod; 402. Cylindrical Groove; 5. Anti-slip Mechanism; 501. Anti-slip Mat; 502. Front Baffle; 6. Covering Mechanism; 601. Baffle Two; 602. Covering Plate; 7. Raft Plate; 8. Waterproof Square Block. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Please see the appendix Figure 1 Appendix Figure 5 and attached Figure 6 The present invention provides an embodiment of a device for localized underground well dewatering in a foundation pit, comprising a cushion layer 1, a drainage mechanism 2 located near the middle on the right side of the cushion layer 1 for dewatering, multiple disassembly mechanisms 3 located on the left and right sides of the top of the cushion layer 1 for disassembly, a limiting mechanism 4 located near the middle of the top of the cushion layer 1 for limiting, a raft slab 7 fixedly connected to the top of the cushion layer 1, a covering mechanism 6 located on the left side of the top of the raft slab 7, and an anti-slip mechanism 5 located near the middle of the top of the cushion layer 1 for anti-slip.

[0042] The drainage mechanism 2 includes a filter layer 201. The top of the filter layer 201 is fixedly connected to the bottom of the pad layer 1. The bottom of the inner wall of the filter layer 201 is connected to a sewage pump 202. The top of the sewage pump 202 is connected to a drain pipe 203 for easy drainage. The outer wall of the drain pipe 203 is connected to a flange 205 near the middle. The upper end of the inner wall of the drain pipe 203 is fixedly connected to a blind plate 204 for drainage. The lower end of the outer wall of the drain pipe 203 is provided with a water-stopping component 206. The water-stopping component 206 includes multiple steel pipes 2061. The bottom of each of the multiple steel pipes 2061 is fixedly connected to the top of the pad layer 1. The top of each of the multiple steel pipes 2061 is fixedly connected to a water-stopping ring 2062.

[0043] Specifically, the structure includes a base layer 1. A drainage mechanism 2 is located on the right side of the base layer 1 near the center. The main function of this drainage mechanism 2 is to treat rainwater and ensure a dry environment inside the base layer 1. Multiple disassembly mechanisms 3 are evenly distributed on the top left and right sides of the base layer 1 to facilitate component disassembly and maintenance. A limit mechanism 4 is also located on the top of the base layer 1 near the center to ensure the stability of the overall structure. A raft plate 7 is fixedly connected to the top of the base layer 1. A covering mechanism 6 is located on the top left side of the raft plate 7 to cover and protect certain key components. An anti-slip mechanism 5 is also located on the top of the base layer 1 near the center to ensure safety. The drainage mechanism 2 includes a filter layer 201. The top of the filter layer 201 is fixedly connected to the bottom of the base layer 1 to ensure its stability. A sewage pump 202 is connected to the bottom of the inner wall of the filter layer 201. The top of the sewage pump 202 is connected to a drain pipe 203 via a pipeline to effectively discharge accumulated water. A flange 205 is connected to the outer wall of the drain pipe 203 near the middle position for connecting and fixing the drain pipe 203 to other components. A blind plate 204 is fixedly connected to the upper part of the inner wall of the drain pipe 203 to prevent backflow of water. A water-stop component 206 is also provided at the lower part of the outer wall of the drain pipe 203 to ensure sealing and prevent water leakage during the drainage process. The water-stop component 206 is specifically composed of multiple steel pipes 2061. The bottom of the steel pipes 2061 is fixedly connected to the top of the pad layer 1 to ensure the stability and durability of the entire component. A water-stop ring 2062 is provided at the top of each steel pipe 2061 to effectively prevent water penetration, enhance the overall performance of the water-stop component 206, and improve its reliability and service life in practical applications.

[0044] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The disassembly mechanism 3 includes multiple baffles 301. The bottom of each baffle 301 is fixedly connected to the top left and right sides of the raft plate 7. Each baffle 301 is fixedly connected to a fixed rod 302, which serves to fix it. The outer wall of the fixed rod 302 is rotatably connected to a cylindrical sleeve 303. Each cylindrical sleeve 303 is fixedly connected to a connecting plate 304 on its outward side. The inner wall of the connecting plate 304 is provided with multiple snap-fit ​​components 305. Each snap-fit ​​component 305 includes a connecting post 3051. The bottom of the connecting post 3051 is fixedly connected to the top of the pad 1 near the edge. The outer wall of the connecting post 3051 is slidably connected to the inner wall of the connecting plate 304. The top of the connecting post 3051 is threaded with an external thread 3052, which makes the overall connection more stable. The top of the external thread 3052 is fixedly connected with a cylindrical cover 3053.

[0045] Specifically, the disassembly mechanism 3 consists of multiple baffles 301. The bottom of each baffle 301 is fixedly connected to the top left and right sides of the raft plate 7 to ensure its stability. Each baffle 301 is connected to a fixed rod 302. A cylindrical sleeve 303 is rotatably connected to the outer wall of the fixed rod 302, allowing the cylindrical sleeve 303 to rotate flexibly on the fixed rod 302. A connecting plate 304 is fixedly connected to the outward side of each cylindrical sleeve 303, providing additional structural support. Multiple snap-fit ​​components 305 are provided on the inner wall of each connecting plate 304 to ensure the stability and reliability of the entire disassembly mechanism 3. Each snap-fit ​​component 305 consists of multiple parts, including a connecting post 305. 1. The bottom of the connecting column 3051 is fixedly connected to the top of the pad 1 near the edge to ensure the stability and firmness of the entire structure. The outer wall of the connecting column 3051 is slidably connected to the inner wall of the connecting plate 304, allowing the connecting column 3051 to slide and adjust flexibly within a certain range to adapt to different installation requirements. At the top of the connecting column 3051, there is an external thread 3052, which is threadedly connected to the connecting column 3051 to ensure the reliability and durability of the connection. The top of the external thread 3052 is further fixedly connected to a cylindrical cover 3053, which plays a protective role and can effectively improve the installation convenience and usage stability of the equipment.

[0046] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 The limiting mechanism 4 includes a limiting rod 401, the bottom of which is fixedly connected to the top left side of the pad 1 near the middle. The bottom of the raft plate 7 has a cylindrical groove 402, the inner wall of which is slidably connected to the outer wall of the limiting rod 401. The anti-slip mechanism 5 includes an anti-slip pad 501, which plays an anti-slip role. The bottom of the anti-slip pad 501 is fixedly connected to the top of the raft plate 7. Multiple front baffles 502 are fixedly connected to the top of the raft plate 7 near the middle, so that the whole can be covered.

[0047] Specifically, the limiting mechanism 4 is composed of a limiting rod 401. The bottom of the limiting rod 401 is fixedly connected to the top left side of the pad 1 to ensure its stability and functionality. The bottom of the raft plate 7 is provided with a cylindrical groove 402. The inner wall of the cylindrical groove 402 is slidably connected to the outer wall of the limiting rod 401, allowing the limiting rod 401 to slide freely within the cylindrical groove 402, thereby limiting and guiding the raft plate 7 and ensuring the stability and motion accuracy of the entire structure. The anti-slip mechanism 5 is composed of an anti-slip pad 501. The bottom of the anti-slip pad 501 is fixedly connected to the top of the raft plate 7 to ensure its stability. On the top of the raft plate 7, near the middle area, multiple front baffles 502 are evenly arranged and fixedly connected, enhancing the stability of the overall structure and further improving the anti-slip effect, ensuring effective prevention of slippage during use and guaranteeing safety.

[0048] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 6 The covering mechanism 6 includes multiple baffles 601. The outward side of each baffle 601 is rotatably connected to the inner wall of the raft 7. Multiple baffles 602 are fixedly connected to each other. A waterproof square block 8 is fixedly connected to the lower end of the outer wall of the drain pipe 203, which can waterproof. The bottom of the waterproof square block 8 is fixedly connected to the top of the filter layer 201. The waterproof square block 8 is used to prevent leakage.

[0049] Specifically, the covering mechanism 6 is mainly composed of multiple baffles 601. The outward side of each baffle 601 is rotatably connected to the inner wall of the raft plate 7, allowing the baffle 601 to rotate within a certain range, thereby achieving flexible adjustment of the covering area. In addition, to enhance the covering effect and structural stability, multiple shielding plates 602 are fixedly connected between adjacent positions of the multiple baffles 601, filling the gaps between the baffles 601 and further improving the overall sealing and shielding performance of the covering mechanism 6, ensuring that it can effectively play its role during use. A waterproof square block 8 is fixedly connected to the lower end of the outer wall of the drain pipe 203. The main function of the waterproof square block 8 is to effectively prevent water leakage, ensure the sealing and leak-proof performance of the entire drainage system, thereby ensuring the normal operation and safe use of the drainage system.

[0050] Working principle: First, during the excavation process, the internal water will enter the interior of the filter layer 201 through the bedding layer 1. When there is too much water inside, the sewage pump 202 will be started. Then, the sewage pump 202 will pump the sewage into the drainage pipe 203. Then, through the drainage pipe 203, it passes through the water-stop ring 2062. At the same time, the water-stop ring 2062 is fixed to the bedding layer 1 through the steel pipe 2061. The water-stop ring 2062 can stop the water in time. Then, the sewage continues to rise through the flange 205. The flange 205 can disassemble and replace the sewage pump 202. At this time, the sewage flows into the drainage ditch through the blind plate 204 and then flows out. At the same time, the blind plate 204 can guide the sewage, which can effectively prevent the silt blockage and increase the adaptability of the land.

[0051] When it is necessary to disassemble the raft plate 7, first rotate the cylindrical cover 3053. At this time, the cylindrical cover 3053 will drive the external thread 3052 to rotate upward until the external thread 3052 leaves the connecting post 3051. Then rotate the connecting plate 304 upward. At this time, the connecting plate 304 will drive the cylindrical sleeve 303 to rotate along the outer wall of the fixing rod 302 until it leaves the connecting post 3051. At this time, the raft plate 7 can be lifted, realizing the function of disassembling and repairing the raft plate 7.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for local dewatering of a pit, comprising a cushion (1), characterized in that: A drainage mechanism (2) is provided on the right side of the cushion layer (1) near the middle. The drainage mechanism (2) is used for precipitation. Multiple disassembly mechanisms (3) are provided on the top left and right sides of the cushion layer (1). The disassembly mechanisms (3) are used for disassembly. A limit mechanism (4) is provided on the top of the cushion layer (1) near the middle. A raft plate (7) is fixedly connected to the top of the cushion layer (1). A covering mechanism (6) is provided on the top left side of the raft plate (7). An anti-slip mechanism (5) is provided on the top of the cushion layer (1) near the middle. The drainage mechanism (2) includes a filter layer (201), the top of which is fixedly connected to the bottom of the pad layer (1), a sewage pump (202) is connected to the bottom of the inner wall of the filter layer (201), a drain pipe (203) is connected to the top of the sewage pump (202), a flange (205) is connected to the outer wall of the drain pipe (203) near the middle, a blind plate (204) is fixedly connected to the upper end of the inner wall of the drain pipe (203), and a water-stopping component (206) is provided on the lower end of the outer wall of the drain pipe (203).

2. The device for localized underground well dewatering in a foundation pit according to claim 1, characterized in that: The disassembly mechanism (3) includes multiple baffles (301), the bottom of each baffle (301) is fixedly connected to the top left and right sides of the raft plate (7), and a fixing rod (302) is fixedly connected between adjacent baffles (301). A cylindrical sleeve (303) is rotatably connected to the outer wall of the fixing rod (302), and a connecting plate (304) is fixedly connected to the outward side of each cylindrical sleeve (303). Multiple buckle assemblies (305) are provided on the inner wall of each connecting plate (304).

3. The device for localized underground well dewatering in a foundation pit according to claim 1, characterized in that: The water-stopping component (206) includes multiple steel pipes (2061), the bottom of each of the multiple steel pipes (2061) is fixedly connected to the top of the padding layer (1), and the top of each of the multiple steel pipes (2061) is fixedly connected to a water-stopping ring (2062).

4. A localized underground well dewatering device for foundation pits according to claim 2, characterized in that: The snap-fit ​​assembly (305) includes a connecting post (3051), the bottom of which is fixedly connected to the top of the pad (1) near the edge, the outer wall of which is slidably connected to the inner wall of the connecting plate (304), the top of which is threaded with an external thread (3052), and the top of which is fixedly connected with a cylindrical cap (3053).

5. A localized underground well dewatering device for foundation pits according to claim 1, characterized in that: The limiting mechanism (4) includes a limiting rod (401). The bottom of the limiting rod (401) is fixedly connected to the top left side of the pad (1) near the middle. The bottom of the raft plate (7) is provided with a cylindrical groove (402). The inner wall of the cylindrical groove (402) is slidably connected to the outer wall of the limiting rod (401).

6. A localized underground well dewatering device for foundation pits according to claim 1, characterized in that: The anti-slip mechanism (5) includes an anti-slip pad (501), the bottom of which is fixedly connected to the top of the raft plate (7), and multiple front baffles (502) are fixedly connected to the top of the raft plate (7) near the middle.

7. A localized underground well dewatering device for foundation pits according to claim 1, characterized in that: The covering mechanism (6) includes multiple baffles (601), and the outward side of each baffle (601) is rotatably connected to the inner wall of the raft plate (7). Multiple baffles (602) are fixedly connected between adjacent baffles (601).

8. A localized underground well dewatering device for foundation pits according to claim 1, characterized in that: A waterproof square block (8) is fixedly connected to the lower end of the outer wall of the drain pipe (203). The bottom of the waterproof square block (8) is fixedly connected to the top of the filter layer (201). The waterproof square block (8) is used to prevent leakage.

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