A socketed precipitation pipe well

Abstract

A kind of socketed precipitation pipe well, comprising: the pipe tip of being arranged in the bottom most, and the multiple section double-layer steel pipes of being fixed on the upside of pipe tip, multiple section double-layer steel pipes are connected to form precipitation pipe well section by section;Precipitation pipe well is provided with pumping pipe and wiring pipe, the bottom of pumping pipe is connected with water pump;Power line and signal line pass through wiring pipe, and are connected with the water pump of bottom;The multiple section double-layer steel pipe of the utility model includes the outer pipe sleeve of being provided with multiple water-permeable holes on side wall and inner steel pipe, filter is arranged between outer pipe sleeve and inner steel pipe.The utility model can directly use the way of pressing pile and drive precipitation pipe well into underground, need not the operation of drilling, simplifies construction step;And pipe tip, double-layer steel pipe and filter in precipitation pipe well can be recycled in later period, use again after cleaning, save material, reduce material cost.

Description

Technical Field

[0001] This utility model relates to the field of dewatering construction technology, specifically to a socket-type dewatering pipe well. Background Technology

[0002] In civil engineering, the construction of deep foundation pits requires the assistance of dewatering wells. Currently, in deep soil and rock dewatering construction in civil engineering projects, equipment such as rotary drilling rigs and impact drilling rigs are used to circulate and drill holes at the designated locations. Mud slurry is then applied to the wall (to prevent diameter reduction), and pipes are processed simultaneously. PVC pipes with numerous perforations around their perimeter are wrapped with filter cloth. After successful drilling, the treated PVC pipes are placed into the hole, the well is flushed, and finally, well-graded filter material is backfilled around the pipes to form the dewatering well pipe. Submersible pumps are then used for dewatering. Multiple dewatering points are arranged at designed intervals (such as in a quincunx pattern) within the site. The well pipes are then buried after the main foundation slab of the project is completed.

[0003] The defects in the existing technology are as follows: 1. Drilling is required before inserting the well casing, which increases the construction process; 2. Mud wall protection is not conducive to water flow during subsequent dewatering; 3. The well casing and filter material are completely discarded after dewatering, resulting in a waste of resources. Utility Model Content

[0004] To address the aforementioned technical problems, this technical solution provides a socket-type dewatering well, which can effectively solve these problems.

[0005] This utility model is achieved through the following technical solution: A type of nested dewatering pipe well includes: a pipe tip at the bottom and multiple sections of double-layered steel pipe fixed to the upper side of the pipe tip, the multiple sections of double-layered steel pipe being nested together to form a dewatering pipe well; a pumping pipe and a wiring pipe are installed inside the dewatering pipe well, the bottom of the pumping pipe being connected to a pumping pump; a power line and a signal line are installed inside the wiring pipe and connected to the pumping pump at the bottom of the dewatering pipe well; the multiple sections of double-layered steel pipe include an outer sleeve with multiple permeable holes on the side wall and an inner steel pipe, the bottom of the outer sleeve and the inner steel pipe being closed and fixedly connected, and a filter is installed between the outer sleeve and the inner steel pipe.

[0006] The combination of the pipe tip and the multi-section double-layer steel pipe structure allows the dewatering pipe well to be driven directly into the ground by pile driving, eliminating the need for drilling and simplifying the construction process. Furthermore, the pipe tip, double-layer steel pipe, and filter in the dewatering pipe well can all be recycled, cleaned, and reused later, saving materials and reducing material costs.

[0007] Furthermore, the filter media includes multiple inner and outer tube reinforcing rings disposed between the outer tube sleeve and the inner steel tube. The inner and outer tube reinforcing rings include an inner reinforcing ring acting on the inner steel tube and an outer reinforcing ring acting on the outer steel tube, which are fixedly connected by connectors. The multiple inner reinforcing rings and the multiple outer reinforcing rings are fixedly connected by multiple longitudinal reinforcing ribs. The outer side of the outer reinforcing ring and the reinforcing ribs and the inner side of the inner reinforcing ring and the reinforcing ribs are respectively covered with filter mud cloth. Filter media is filled between the outer and inner filter mud cloths.

[0008] The reinforcing rings on the inner and outer tubes of the filter media not only function as filter elements, but also provide support for the outer sleeve and inner steel pipe, while also limiting the movement of the inner steel pipe. This effectively prevents the inner steel pipe from swaying inside the outer sleeve during transportation, facilitating the transport of the double-layer steel pipe.

[0009] Furthermore, the thickness of the inner and outer reinforcing rings at the top of each double-layer steel pipe is slightly greater than that of the reinforcing rings in the middle and bottom; this allows the pile extractor to easily hold the top reinforcing rings when the filter element is removed from the double-layer steel pipe for cleaning during the pipe extraction process.

[0010] Furthermore, the pore size of the outer ring filter cloth can be slightly larger than that of the inner ring filter cloth, or the pore size of the outer ring filter cloth can be equal to that of the inner ring filter cloth.

[0011] Furthermore, the filter media uses coarse sand and / or gravel with a particle size of 2 to 5 mm and a mud content typically controlled at <3%. The coarse sand and / or gravel are filled between the outer and inner rings of filter cloth during on-site construction. This on-site filling of the filter media allows for separate transportation of the filter media and the double-layer steel pipes, facilitating material transport.

[0012] Furthermore, the aforementioned dewatering pipe well is equipped with multiple transverse fixing ribs for limiting the pumping pipe and wiring pipe. Each transverse fixing rib includes a support ring that contacts the inner wall of the inner steel pipe, and a through hole for limiting the wiring pipe is provided in the center of the support ring. The inner side of the support ring is fixedly connected to the pumping pipe via a connecting part. The support ring in the transverse fixing ribs provides support for the pumping pipe.

[0013] Furthermore, spring conduits are provided at both the top and bottom of the wiring conduit, and spring coils are provided at the corresponding positions of the power lines and signal lines located on the spring conduits; waterproof plug-in plugs and sockets are provided at the top and bottom of the power lines and signal lines, respectively.

[0014] Power and signal cables are run through sealed conduits, preventing them from contacting water and providing protection. The spring conduit and coil are manually connected at the junction of two pipe sections via waterproof terminals, facilitating on-site connection. When the upper and lower double-layer steel pipe sections are about to be joined, the spring coil can be pulled out for connection, linking the waterproof plug-in connector at the bottom of the upper double-layer steel pipe to the waterproof plug-in socket at the top of the lower double-layer steel pipe.

[0015] Furthermore, the wiring conduit is equipped with a water level sensor for detecting water level; the water level sensor includes a high-level water level sensor corresponding to the submersible pump and a low-level water level sensor corresponding to the vacuum pump; when the high-level water level sensor detects the water level, the submersible pump can be turned on to start pumping; when the low-level water level sensor does not detect the water level, the vacuum pump can be turned on to create a negative pressure in the well pipe cavity, drawing water from around the well pipe into the well until the high-level water level sensor detects the water level and stops.

[0016] The water level sensor can detect the water level and protect the submersible pump. Since the submersible pump needs to be submerged about 1 meter below the water level to work, using the water level sensor to monitor the water level can prevent the submersible pump from burning out due to no-load operation.

[0017] Furthermore, the top and bottom ends of the pumping pipe are respectively connected to an upper head and a lower head, and the upper head and the lower head include connectors provided at the ends of the pumping pipe. The connector has a through hole in the middle that communicates with the water pipe; a joint is fixedly connected to the top and / or bottom of the water pipe, and an annular limiting groove is provided in the middle of the end face of the joint away from the water pipe. The width of the annular limiting groove matches the wall thickness of the bottom of the connector, so that the bottom of the connector can be inserted into the annular limiting groove; and an annular spring is fixed to the bottom of the annular limiting groove; after the bottom of the connector is inserted into the annular limiting groove, its bottom is fixedly connected to the top of the annular spring; the length of the bottom of the connector is greater than or equal to the depth of the annular limiting groove. The connector has an outwardly extending annular portion at the end away from the water pipe, and a buffer pad is fixed on the upper side of the annular portion; both the buffer pad and the annular portion have through holes in the middle, and the diameter of the through holes is the same as the inner diameter of the water pipe, so that the buffer pad, the annular portion, the connector and the water pipe are connected.

[0018] The spring and buffer pad design allows the double-layer steel pipes to reduce pressure on the pumping pipes during the pressing process, providing protection. The outward-extending ring increases the contact area between the upper and lower mandrels, making them easier to align and connect, and increasing the tolerance for misalignment. Even slight misalignment will not affect the connection stress and continuity of the upper and lower pumping pipes. After the pile driving operation is completed, the spring's rebound force acts on the buffer pad when the pressure is reduced, making the contact between the upper and lower mandrels tighter and increasing the sealing effect. Combined with the ring design, the large contact area of ​​the buffer pads further enhances the sealing effect.

[0019] Furthermore, the joints of the multi-section double-layer steel pipes are connected by hanging rings until they are pressed into the well to the designed depth; the top of the uppermost double-layer steel pipe in the well is equipped with a sealing steel cap; the sealing steel cap is equipped with a vacuum pump port.

[0020] When the filter cartridge is clogged and has poor water permeability, a vacuum pump can be connected and turned on to increase the negative pressure inside the dewatering well, thus accelerating the entry of water from the surrounding area into the dewatering well.

[0021] Furthermore, two submersible pumps are provided, and the bottom of the water pump pipe is inverted U-shaped. The pipes at the bottom of the inverted U-shape are connected to the two submersible pumps respectively, and check valves are provided on the upper side of the two submersible pumps respectively.

[0022] The setup with two submersible pumps allows the other pump to be used if the first one fails. It also allows for alternating operation of the two pumps when continuous pumping is required for extended periods, providing protection for the pumps.

[0023] Furthermore, a support is provided on the lower side of the submersible pump, with a gap between the support and the bottom of the dewatering well; a sedimentation zone is formed on the lower side of the support. The sedimentation zone can store floating sludge in the water, reducing the suction of the submersible pump; further, it provides protection for the submersible pump. Beneficial effects

[0024] The socket-type dewatering manhole proposed in this utility model has the following advantages compared with the prior art: This technical solution allows for direct driving of dewatering wells into the ground using pile driving, eliminating the need for drilling and simplifying the construction process. Furthermore, the pipe tip, double-layer steel pipe, and filter media within the dewatering well can all be recycled, cleaned, and reused later, saving materials and reducing material costs. The sealing steel cover and its vacuum pump inlet allow for increased negative pressure within the well when the filter element becomes clogged and its permeability is poor, accelerating the entry of water from the surrounding area into the dewatering well. This effectively solves the problems of existing technologies mentioned in the background section. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the bottom double-layer steel pipe in this utility model.

[0026] Figure 2 This is a side and sectional view of the bottom double-layer steel pipe in this utility model.

[0027] Figure 3 This is a schematic diagram of the standard section double-layer steel pipe in this utility model.

[0028] Figure 4 This is a schematic diagram of the filter material in this utility model.

[0029] Figure 5 This is a schematic diagram of the inner and outer tube reinforcing rings in this utility model.

[0030] Figure 6 This is a schematic diagram of the transverse fixing rib in this utility model.

[0031] Figure 7 This is a schematic diagram of the structure of the upper top head in this utility model.

[0032] Figure 8 This is a schematic diagram of the connecting component in this utility model.

[0033] Figure 9 This is a schematic diagram of the connection between the upper and lower double-layer steel pipes in this utility model.

[0034] Figure 10 This is a schematic diagram of the top structure of this utility model.

[0035] The markings in the attached diagram are as follows: 1-pipe tip, 2-double-layer steel pipe, 21-outer pipe sleeve, 22-inner steel pipe, 23-water permeable hole, 24-upper hook, 25-hanging ring, 26-hook, 31-inner and outer pipe reinforcing rings, 311-connector, 312-inner reinforcing ring, 313-outer reinforcing ring, 32-longitudinal reinforcing rib, 33-outer ring filter cloth, 34-inner ring filter cloth, 4-pumping pipe, 41-upper head, 411-connector, 4111-circular part, 412-joint, 4121- Annular limiting groove, 413-buffer pad, 414-ring spring, 42-lower head, 5-bracket, 6-submersible pump, 61-check valve, 7-wiring conduit, 71-spring conduit, 72-high water level sensor, 73-low water level sensor, 8-transverse fixing rib of pumping pipe, 81-support ring, 82-connecting part, 9-sealing steel cover, 91-vacuum pump port, 92-bolt, 10-sealing ring, 11-sedimentation zone, 12-hopper body, 13-connecting rib, 14-hollow cone. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are only some embodiments of the present utility model, and not all embodiments. Various modifications and improvements to the technical solutions of the present utility model made by those skilled in the art without departing from the design concept of the present utility model should fall within the protection scope of the present utility model. Example

[0037] like Figures 1 to 10 As shown, a nested dewatering manhole includes: a pipe tip 1 located at the bottom, and a double-layer steel pipe 2 fixed to the upper side of the pipe tip 1 by means of threads, fasteners, or welding. The double-layer steel pipe 2 has multiple sections. The joints of the multiple sections of the double-layer steel pipe 2 are connected and compacted by a pile driver, and then limited by upper hooks 24 and hanging rings 25. The multiple sections of the double-layer steel pipe 2 are nested together to form the dewatering manhole. In this embodiment, the pipe tip is a conventional pile tip used in pile driving.

[0038] like Figures 2 to 3 As shown, each of the multi-section double-layer steel pipes 2 includes an outer sleeve 21 and an inner steel pipe 22. The side walls of the outer sleeve 21 and the inner steel pipe 22 are provided with multiple water-permeable holes 23. A gap is provided between the outer sleeve 21 and the inner steel pipe 22, and the bottom of the gap is closed and fixedly connected. A filter is provided in the gap.

[0039] like Figure 4 As shown, the filter includes multiple inner and outer tube reinforcing rings 31 disposed at the top, bottom, and middle of the outer tube sleeve 21 and the inner steel tube 22; the thickness of the inner and outer tube reinforcing rings 31 located at the top is slightly greater than the thickness of the reinforcing rings in the middle and at the bottom. The greater thickness of the inner and outer tube reinforcing rings 31 at the top is to facilitate clamping by the pile puller and make it easier to apply force when pulling the tube.

[0040] The inner and outer tube reinforcing rings 31 include: an inner reinforcing ring 312 acting on the inner steel pipe 22 and an outer reinforcing ring 313 acting on the outer tube sleeve 21, which are fixedly connected by a connector 311; such as Figure 5 As shown. The inner and outer tube reinforcing rings 31 not only function as a filter element, but also provide support for the outer tube sleeve 21 and the inner steel tube 22, while also limiting the movement of the inner steel tube 22.

[0041] Multiple longitudinally distributed inner reinforcing rings 312 and multiple longitudinally distributed outer reinforcing rings 313 are fixedly connected by multiple longitudinal reinforcing ribs 32. The outer side of the outer reinforcing rings 313 and the outer side of the reinforcing ribs 32 and the inner side of the inner reinforcing rings 312 and the inner side of the reinforcing ribs 32 are respectively covered with filter cloth. The pores of the outer filter cloth 33 can be slightly larger than the pores of the inner filter cloth 34, or the pores of the outer filter cloth 33 can be equal to the pores of the inner filter cloth 34. The longitudinal reinforcing ribs 32 are made of longitudinally arranged steel bars.

[0042] The filter material between the outer ring filter cloth 33 and the inner ring filter cloth 34 is filled with coarse sand and / or gravel with a particle size of 2 to 5 mm and a mud content usually controlled at <3%. The coarse sand and / or gravel are filled between the outer ring filter cloth and the inner ring filter cloth during on-site construction.

[0043] like Figure 1 As shown, a water pump is installed at the bottom of the dewatering well. The water pump is connected to a pumping pipe 4 leading to the top of the well opening, and a power line and signal line are also connected to the top of the well opening. A support 5 is installed at the bottom of the dewatering well, with a distance of 0.5 to 1.5 meters between the support 5 and the bottom of the well; a sedimentation zone 11 is formed on the lower side of the support. The sedimentation zone 11 is designed to store the floating sludge that settles in the water. Two submersible pumps 6 are used for pumping. The two submersible pumps 6 are placed on the elevated support 5 to prevent the submersible pumps 6 from being covered by the settled sludge, reduce the suction of floating sludge by the submersible pumps 6, and protect the submersible pumps 6.

[0044] To connect the two submersible pumps 6, the bottom of the pumping pipe 4 is set in an inverted U-shape. The two pipes at the bottom of the inverted U-shape are connected to the two submersible pumps 6 respectively, and check valves 61 are installed on the pipes on the upper side of the two submersible pumps 6 respectively, so as to realize the alternating use of the two submersible pumps 6.

[0045] like Figure 3 As shown, a wiring conduit 7 is installed inside the dewatering pipe well. The power line and signal line are installed inside the wiring conduit 7 and connected to the water pump at the bottom of the dewatering pipe well. The power line and signal line are sealed through the wiring conduit 7, which can prevent the power line and signal line from coming into contact with water and can protect the power line and signal line.

[0046] Each section of the double-layer steel pipe 2 is equipped with one or more transverse fixing ribs 8 for the pumping pipe. These transverse fixing ribs 8 are used to limit the movement of the pumping pipe 4 and the wiring pipe 7. Figure 6 As shown, the transverse fixing rib 8 of the water pumping pipe includes a support ring 81 that contacts the inner wall of the inner steel pipe. The support ring 81 has a through hole in the middle for limiting the wiring conduit 7. The inner side of the support ring 81 is fixedly connected to the water pumping pipe 7 through a connecting part 82. The support ring 81 in the transverse fixing rib 8 can provide support for the water pumping pipe.

[0047] In each section of double-layer steel pipe 2, spring conduits 71 are installed at both the top and bottom of the wiring conduit 7, see Figure 3 The power cord and signal cord are equipped with spring coils at the positions of the spring tube 71; the top and bottom of the power cord and signal cord are respectively equipped with waterproof plug-in plugs and sockets, which are set using conventional technology.

[0048] The spring coil 71 and spring coil are designed so that when the two double-layer steel pipes 2 are about to be connected, the spring coil 71 can be pulled out for manual connection, connecting the waterproof plug-in plug and socket in the upper and lower double-layer steel pipes 2 together, which facilitates the connection operation on site.

[0049] At a designated height in the dewatering well, a water level sensor for detecting water level is installed on the outside of the wiring conduit 7; the water level sensor includes a high-level water level sensor 72 corresponding to the submersible pump and a low-level water level sensor 73 corresponding to the vacuum pump; see Figure 1 When the high-level water level sensor 72 detects the water level, the submersible pump 6 can be switched on to start pumping. When the low-level water level sensor 73 does not detect the water level, the vacuum pump switch can be turned on to create negative pressure in the well pipe cavity, drawing water from around the well pipe into the well until the high-level water level sensor detects the water level and stops pumping.

[0050] The water level sensor can detect the water level and protect the submersible pump 6. Since the submersible pump needs to be submerged about 1 meter below the water level to work, using the water level sensor to monitor the water level can prevent the submersible pump from burning out under no-load conditions.

[0051] In each section of the double-layered steel pipe 2, the top and bottom ends of the pumping pipe 4 are respectively connected to an upper cap 41 and a lower cap 42. For example... Figure 7 As shown, the upper head 41 and / or the lower head 42 include a connector 411 disposed at the end of the water pumping pipe 4. The connector 411 has a through hole in the middle that communicates with the water pumping pipe 4. Both the top and bottom of the water pumping pipe 4 are fixedly connected with annular joints 412 by threads. The end of the joint 412 away from the water pumping pipe 4 has an annular limiting groove 4121 in the middle of its end face. The width of the annular limiting groove 4121 matches the wall thickness of the bottom of the connector 411, allowing the bottom of the connector 411 to be inserted into the annular limiting groove 4121. The bottom of the annular limiting groove 4121 is fixed with an annular spring 414 whose thickness is less than or equal to the width of the annular limiting groove by adhesive or a fastener. After the bottom of the connector 411 is inserted into the annular limiting groove 4121, its bottom is fixedly connected to the top of the annular spring 414. The length of the bottom of the connector 411 is greater than or equal to the depth of the annular limiting groove 4121.

[0052] In this embodiment, to take cost into consideration, the upper top head 41 adopts a combination of a connector, a connecting piece 411 and a ring spring 414; the lower top head 42 is directly connected to the bottom of the water pumping pipe 4 through the connecting piece 411. When the lower top head 42 is directly connected to the connecting piece 411, the outer wall of the bottom of the connecting piece 411 is provided with a thread that matches the inner wall of the bottom of the water pumping pipe 4, and the two are connected by the thread.

[0053] This embodiment also includes an upper top head 41 and a lower top head 42 both using a combination of a connector, a connecting piece 411 and a ring spring 414; and the upper top head 41 is directly connected to the top of the water pumping pipe 4 through the connecting piece 411, while the bottom uses a combination of a connector, a connecting piece 411 and a ring spring 414.

[0054] The connector 411 has an outwardly extending annular portion 4111 at the end away from the water pipe 4, and a buffer pad 413 is fixed to the upper side of the annular portion 4111. Both the buffer pad 413 and the annular portion 4111 have through holes in the middle, the diameter of which is the same as the inner diameter of the water pipe 4, allowing the buffer pad 413, the annular portion 4111, the connector 411, and the water pipe 4 to communicate. In this embodiment, the buffer pad 413 is a rubber pad.

[0055] The outwardly extending annular portion 4111 increases the contact area between the upper cap 41 and the lower cap 42, making them easier to align and connect. Even minor misalignment will not affect the connection stress and connection effect of the upper and lower water pipes. The setting that the length of the bottom of the connector 411 is greater than or equal to the depth of the annular limiting groove 4121 ensures that the bottom surface of the annular portion 4111 will not contact the top surface of the connector 412, thus protecting the connector 412.

[0056] like Figure 9 As shown, a connecting device is provided at the top and bottom of the outermost part of the double-layer steel pipe 2. The connecting device includes an upper hook 24 and a hanging ring 25 structure provided at the top or bottom of the double-layer steel pipe. In this embodiment, a hanging ring 25 is installed at the top of the double-layer steel pipe 2 via a rotating shaft, and an upper hook 24 is provided at the bottom of the double-layer steel pipe 2. When the upper and lower sections of the steel pipe need to be connected, the hanging ring 25 is hung on the upper hook 24.

[0057] A hook 26 is also installed at the top of the double-layer steel pipe 2; used for lifting equipment during on-site construction.

[0058] like Figure 10 As shown, the uppermost double-layer steel pipe 2 of the well is topped with a sealing steel cover 9 secured by bolts 92; the sealing steel cover 9 is equipped with a vacuum pump port 91. The vacuum pump port 91 allows for connection to a vacuum pump when the filter element is clogged and has poor water permeability. Activating the vacuum pump increases the negative pressure inside the dewatering well, accelerating the entry of water from the surrounding area into the well. This solves the problems of inadequate mud wall protection and water flow during later dewatering processes caused by long-term filtration clogging of the perforations.

[0059] The wiring conduit 7 and the water pumping pipe 4 extend through the sealing steel cover 9 to the outside of the well pipe and are connected to the corresponding equipment; a sealing ring 10 is provided at the connection between the wiring conduit 7 and the water pumping pipe 4 and the sealing steel cover 9.

Claims

1. A socket-type dewatering pipe well, characterized in that: The dewatering manhole includes: a pipe tip (1) at the bottom, and multiple double-layer steel pipes (2) fixed on the upper side of the pipe tip (1), the multiple double-layer steel pipes (2) being connected section by section to form the dewatering manhole; a pumping pipe (4) and a wiring pipe (7) are installed inside the dewatering manhole, the bottom of the pumping pipe (4) being connected to a pumping pump; a power line and a signal line are installed inside the wiring pipe (7) and connected to the pumping pump at the bottom of the dewatering manhole; the multiple double-layer steel pipes (2) include an outer sleeve (21) with multiple permeable holes (23) on the side wall and an inner steel pipe (22), the bottom of the outer sleeve (21) and the inner steel pipe (22) are fixedly connected in a closed manner, and a filter is installed between the outer sleeve (21) and the inner steel pipe (22); The filter media includes multiple inner and outer tube reinforcing rings (31) disposed between the outer tube sleeve (21) and the inner steel tube (22). The inner and outer tube reinforcing rings (31) include an inner ring reinforcing ring (312) and an outer ring reinforcing ring (313) fixedly connected by a connector (311). The multiple inner ring reinforcing rings (312) and the multiple outer ring reinforcing rings (313) are fixedly connected by multiple longitudinal reinforcing ribs (32). The outer side of the outer ring reinforcing ring (313) and the outer side of the reinforcing rib (32) and the inner side of the inner ring reinforcing ring (312) and the inner side of the reinforcing rib (32) are respectively covered with filter mud cloth. Filter media is filled between the outer ring filter mud cloth (33) and the inner ring filter mud cloth (34).

2. The socket-type dewatering well according to claim 1, characterized in that: The well is provided with multiple transverse fixing ribs (8) for limiting the pumping pipe (4) and the wiring pipe (7). The transverse fixing ribs (8) include a support ring (81) that contacts the inner wall of the inner steel pipe (22). The middle part of the support ring (81) is provided with a through hole for limiting the wiring pipe (7). The inner side of the support ring (81) is fixedly connected to the pumping pipe (4) through the connecting part (82).

3. A socket-type dewatering pipe well according to claim 1 or 2, characterized in that: The top and bottom of the wiring conduit (7) are provided with spring conduits (71), and the power line and signal line are provided with spring coils at the positions of the spring conduits; the top and bottom of the power line and signal line are respectively provided with waterproof plug-in plugs and sockets.

4. A socket-type dewatering pipe well according to claim 3, characterized in that: The wiring conduit (7) is equipped with a water level sensor for detecting water level; the water level sensor includes a high water level sensor (72) corresponding to the submersible pump (6) and a low water level sensor (73) corresponding to the vacuum pump; when the high water level sensor (72) senses the water level, the submersible pump (6) can be turned on to pump water; when the low water level sensor (73) does not sense the water level, the vacuum pump can be turned on to create a negative pressure in the well pipe cavity, and water around the well pipe will enter the well until the high water level sensor senses the water level and stops.

5. A socket-type dewatering well according to claim 1 or 2, characterized in that: The top and bottom ends of the pumping pipe (4) are respectively connected to an upper head (41) and a lower head (42), and the upper head (41) and / or the lower head (42) include a connector (411) provided at the end of the pumping pipe (4). The connector (411) has a through hole in the middle that communicates with the pumping pipe (4); the top and bottom of the pumping pipe (4) are fixedly connected to a joint (412), and the end of the joint (412) away from the pumping pipe (4) has an annular limiting groove (4121) in the middle of its end face. The width of the annular limiting groove (4121) matches the wall thickness of the bottom of the connector (411), so that the bottom of the connector (411) can be inserted into the annular limiting groove (4121); and an annular spring (414) is fixed at the bottom of the annular limiting groove (4121); after the bottom of the connector (411) is inserted into the annular limiting groove (4121), its bottom is fixedly connected to the top of the annular spring (414); the length of the bottom of the connector (411) is greater than or equal to the depth of the annular limiting groove (4121); The connector (411) has an outwardly extending annular portion (4111) at the end away from the pumping pipe (4), and a buffer pad (413) is fixed on the upper side of the annular portion (4111); a through hole is opened in the middle of the buffer pad (413) and the annular portion (4111), and the diameter of the through hole is consistent with the inner diameter of the pumping pipe (4).

6. A socket-type dewatering pipe well according to claim 1, characterized in that: The connection of the multi-section double-layer steel pipe (2) is connected by a hanging ring (25) until it is pressed into the well to the designed depth. The top of the double-layer steel pipe (2) at the top of the well is provided with a sealing steel cover (9); the sealing steel cover (9) is provided with a vacuum pump port (91).

7. A socket-type dewatering well according to claim 4, characterized in that: The submersible pump (6) is provided in two parts. The bottom of the pumping pipe (4) is inverted U-shaped. The pipes at the bottom of the inverted U-shape are connected to the two submersible pumps (6) respectively. Check valves (61) are provided on the upper side of the two submersible pumps (6) respectively.

8. A socket-type dewatering well according to claim 7, characterized in that: A support (5) is provided on the lower side of the submersible pump (6), and a gap is provided between the support (5) and the bottom of the dewatering well; a sedimentation zone (11) is formed on the lower side of the support.

Images