Underground water lifting device with capillary function and drainage system for leakage maintenance

Abstract

The utility model discloses an underground water lifting device with a capillary function and a drainage system for leakage maintenance, a lifting cylinder body of the underground water lifting device comprises a straight cylinder section, a capillary cylinder section and a sealing cylinder section which are sequentially arranged from bottom to top, and the peripheral side of the sealing cylinder section is sleeved with a first sealing ring which is attached to the hole wall of a drainage opening in a sealing mode; the lower end of the straight barrel section is open, gaps exist between the straight barrel section and the hole wall of the water drainage opening and between the capillary barrel section and the hole wall of the water drainage opening in the circumferential direction, an inner cavity of the capillary barrel section communicates with an inner cavity of the straight barrel section and an inner cavity of the sealing barrel section in the vertical direction, and a plurality of capillary channels are formed in the peripheral side of the capillary barrel section in the circumferential direction at intervals. Each capillary channel is arranged to be separated from the inner cavity of the capillary tube section and communicated with the inner cavity of the sealing tube section, the underground water lifting device can be arranged to be a capillary tube lifting device, even if the water pressure of underground water is small, automatic lifting drainage can be achieved through the capillary channels, and the purpose of improving the drainage effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of ground leakage repair technology, and in particular relates to a groundwater lifting device with capillary function and a drainage system for leakage repair. Background Technology

[0002] Multi-story and high-rise buildings require deep foundations. To utilize this height, basements are constructed beneath the ground floor, offering both economic and practical benefits. However, basement floors are prone to water seepage after a period of use, affecting the basement's lifespan and, in severe cases, rendering it unusable.

[0003] The existing repair method for basement floor leakage involves trenching and pipe laying for drainage. Drainage holes can be opened at selected drainage points, and vertical drainage pipes can be installed in the drainage holes to guide the rising groundwater to rise and then discharge it through horizontal pipes. However, when the groundwater pressure is low, it is difficult for the groundwater to rise, resulting in poor drainage effect. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides a groundwater lifting device with capillary function and a drainage system for leakage repair, aiming to solve the technical problem of poor drainage effect when the groundwater pressure is low.

[0005] To achieve the above objectives, the first aspect of this utility model provides a groundwater lifting device with capillary function. The groundwater lifting device with capillary function has a lifting cylinder, which includes: a straight cylinder section, a capillary cylinder section, and a sealing cylinder section arranged sequentially from bottom to top. A first sealing ring is fitted on the outer periphery of the sealing cylinder section to seal against the wall of the drain outlet. The lower end of the straight cylinder section is open. Both the straight cylinder section and the capillary cylinder section have circumferential gaps with the wall of the drain outlet. The inner cavity of the capillary cylinder section is vertically connected to the inner cavities of the straight cylinder section and the sealing cylinder section. Multiple capillary channels are spaced apart on the outer periphery of the capillary cylinder section in the circumferential direction. Each capillary channel is configured to be separated from the inner cavity of the capillary cylinder section and connected to the inner cavity of the sealing cylinder section.

[0006] In one embodiment of this utility model, the capillary section is configured to have the same outer diameter as the straight section and includes a first capillary section and a second capillary section arranged sequentially from bottom to top. The wall thickness of the first capillary section is greater than the wall thickness of the straight section, and the wall thickness of the second capillary section is greater than the wall thickness of the first capillary section. The capillary channel includes an outer ring capillary section and a first inner ring capillary section. The outer ring capillary section is laterally open and extends from the first capillary section to the second capillary section. The first inner ring capillary section extends vertically on the second capillary section and is located inside the outer ring capillary section, so that the first inner ring capillary section communicates radially with the outer ring capillary section and communicates vertically with the inner cavity of the sealed cylinder section.

[0007] In one embodiment of the present invention, a first partition is provided between the inner cavity of the straight section and the inner cavity of the first capillary section, and a plurality of first through holes are provided on the first partition at intervals.

[0008] In one embodiment of the present invention, a second partition portion is provided between the inner cavity of the first capillary section and the inner cavity of the second capillary section, and a plurality of second through holes are provided at intervals on the second partition portion.

[0009] In one embodiment of this utility model, the cross-sectional shape of the outer capillary segment is a first circle with an opening, and the cross-sectional shape of the first inner capillary segment is a second circle. The center of the first circle and the center of the second circle on the same capillary channel are both in the same radial direction of the capillary segment, and the diameter of the second circle is smaller than the diameter of the first circle. The second capillary segment is also provided with a first connecting segment to radially connect the outer capillary segment and the first inner capillary segment. The first connecting segment is necked in cross-section and located between the first circle and the second circle.

[0010] In one embodiment of this utility model, the capillary section further includes a third capillary section located above the second capillary section. The wall thickness of the third capillary section is greater than that of the second capillary section. The capillary channel also includes a second inner ring capillary section. The outer ring capillary section extends sequentially from the first capillary section to the second and third capillary sections. The first inner ring capillary section extends from the second capillary section to the third capillary section, such that the first inner ring capillary section is radially aligned with the outer ring capillary section in both the second and third capillary sections. The second inner ring capillary section is located inside the first inner ring capillary section and extends vertically in the third capillary section, such that the second inner ring capillary section is radially aligned with the first inner ring capillary section and vertically aligned with the inner cavity of the sealing cylinder section.

[0011] In one embodiment of the present invention, the groundwater lifting device further includes a docking cover that is detachably installed on the upper end of the sealing cylinder section, and the outer periphery of the docking cover is provided with a joint.

[0012] In one embodiment of the present invention, the lower end of the docking cover is detachably inserted into the upper end of the sealing cylinder section to cover the upper opening of the lifting cylinder, and a second sealing ring is provided between the docking cover and the sealing cylinder section.

[0013] In one embodiment of this utility model, the number of connectors is set to at least two, and at least two of the four points evenly distributed on the outer periphery of the mating cover are selected for one-to-one correspondence.

[0014] In one embodiment of this utility model, a check device may be provided at the upper end of the inner cavity of the capillary tube section and / or at the end of the capillary channel that communicates with the inner cavity of the sealing tube section.

[0015] To achieve the above objectives, a second aspect of this utility model provides a drainage system for leak repair, wherein the drainage system for leak repair includes a drainage pipe assembly and a groundwater lifting device with capillary function as described above, and the drainage pipe assembly can be connected to the upper end of the groundwater lifting device.

[0016] Through the above technical solution, the groundwater lifting device with capillary function provided by this utility model has the following beneficial effects:

[0017] When the aforementioned groundwater lifting device with capillary function is placed into the drain outlet, it has a lifting cylinder, which includes a straight cylinder section, a capillary cylinder section, and a sealing cylinder section arranged sequentially from bottom to top. A first sealing ring is fitted onto the outer periphery of the sealing cylinder section to seal against the drain outlet's borehole wall. The lower end of the straight cylinder section is open. Both the straight cylinder section and the capillary cylinder section have circumferential gaps with the drain outlet's borehole wall. The inner cavity of the capillary cylinder section connects vertically to the inner cavities of the straight cylinder section and the sealing cylinder section. Multiple capillary channels are spaced apart along the circumferential direction on the outer periphery of the capillary cylinder section. Each capillary channel is separated from the inner cavity of the capillary cylinder section and communicates with the inner cavity of the sealing cylinder section. This arrangement allows for… The groundwater lifting device is designed as a capillary lifting device. When groundwater surges upward, it has two paths: one is the lower opening of the straight section - the inner cavity of the straight section - the inner cavity of the capillary section - the inner cavity of the sealed section, which is suitable for situations with high groundwater pressure; the other is the gap between the capillary section and the wall of the drain outlet - the capillary channel - the inner cavity of the sealed section. Due to the capillary function of the capillary channel, it is suitable for situations with lower groundwater pressure. Therefore, even when the groundwater pressure is low, the groundwater lifting device provided by this invention can achieve autonomous lifting and drainage, lifting the groundwater to the inner cavity of the sealed section and discharging it through other pipes, thus achieving the purpose of lifting and drainage.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0020] Figure 1 This is a structural diagram of the basement building floor according to one embodiment;

[0021] Figure 2 This is a flowchart of a basement floor leakage repair method according to one embodiment;

[0022] Figure 3 This is a structural schematic diagram of the basement floor according to one embodiment;

[0023] Figure 4 This is a structural schematic diagram of one of the embodiments of opening a drain outlet and a connecting channel in the current maintenance area;

[0024] Figure 5 This is an installation diagram of a drainage system for leakage repair according to one embodiment of the present utility model;

[0025] Figure 6 This is a structural schematic diagram of another embodiment, which involves opening a drain outlet and a connecting channel in the current maintenance area.

[0026] Figure 7 This is a schematic diagram of the structure of the groundwater lifting device installed at the drain outlet according to the first embodiment of this utility model;

[0027] Figure 8 This is a disassembly diagram of a groundwater lifting device according to an embodiment of the present invention;

[0028] Figure 9 This is a longitudinal sectional view of the groundwater lifting device according to the first embodiment of the present invention;

[0029] Figure 10 yes Figure 9 Schematic diagram of the transverse cross-section at points 1-1, 2-2, 3-3, and 4-4;

[0030] Figure 11 This is a schematic diagram of the anti-reverse device according to the first embodiment of the present invention;

[0031] Figure 12 This is a longitudinal sectional view of the groundwater lifting device according to the second embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the structure of the connector being configured as a single pass, double pass, three pass, and four pass according to one embodiment of the present utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10 Foundation 11 Waterproofing layer

[0035] 12 Waterproof layer 13 Waterproof protective layer

[0036] 14. Bottom Slab Structural Layer 15. Bottom Slab Surface Layer

[0037] 16 Finishing Layers

[0038] 100 Current maintenance area 101 Expansion joint

[0039] 102 Water collection well 103 Drainage outlet

[0040] 104 Connecting groove; 105 Leakage joint

[0041] 200 Main drainage pipe; 300 branch drainage pipe

[0042] 400 Groundwater lifting device; 410 Lifting cylinder

[0043] 411 Straight Cylindrical Section 412 First Capillary Cylindrical Section

[0044] 413 Second capillary section 414 Third capillary section

[0045] 415 Sealing section 416 First sealing ring

[0046] 420 Capillary Channel 421 Outer Ring Capillary Segment

[0047] 422 First inner ring capillary segment 423 Second inner ring capillary segment

[0048] 424 First circle 425 Second circle

[0049] 426 First pair of connecting sections 427 Second pair of connecting sections

[0050] 430 First partition plate section 431 First through hole

[0051] 440 Second partition section 441 Second through hole

[0052] 450 Connecting cover 451 Joint section

[0053] 452 Second sealing ring 453 Third sealing ring

[0054] 460 Anti-reverse device 461 Ring plate section

[0055] 462 Apical valve Detailed Implementation

[0056] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0057] like Figures 2 to 5 As shown, the repair methods for basement floor leakage include:

[0058] In step S100, all expansion joints 101 around the current maintenance area 100 are cut into the bottom structural layer 14 so that the drainage main pipe 200 can be installed.

[0059] Specifically, basement floors typically have expansion joints 101 arranged in a grid pattern. If leakage occurs in a specific space (especially the central area), this space is designated as the current maintenance area 100. To facilitate the subsequent sealing of the interlayer gaps between the foundation slab structural layer 14 and the foundation slab surface layer 15 around the current maintenance area 100 by the internal drainage main pipe 200 and the grout used in the initial grouting operation, the expansion joints 101 around the current maintenance area 100 can be widened. This widening operation can increase both the width and depth of the expansion joints 101. The maximum width of the expansion joints 101 can be increased to 20mm. The drainage main pipe 200 includes, but is not limited to, a 10mm PVC pipe. The expansion joints 101 can be deepened to extend into the foundation slab structural layer 14 and be located above the reinforcing steel bars in the foundation slab structural layer 14, without damaging the reinforcing steel bars in the foundation slab structural layer 14. It should be noted that... (See also...) Figure 1 The existing basement is constructed from bottom to top as follows: foundation 10, waterproof cushion layer 11, waterproof layer 12, waterproof protective layer 13, bottom slab structural layer 14 (reinforced concrete structure), bottom slab surface layer 15, and finishing layer 16.

[0060] More specifically, basements typically have a sump 102, and the main drainage pipe 200 can be directed to the sump 102 to collect the raised groundwater. When the sump 102 is far from the current maintenance area 100, the expansion joint 101 between the sump 102 and the current maintenance area 100 can be widened to allow the built-in main drainage pipe 200 to direct the groundwater discharged from the current maintenance area 100 to the sump 102. Furthermore, if the sump 102 is located away from the expansion joint 101, an additional opening can be made between the sump 102 and the expansion joint 101 to facilitate pipe laying. Of course, this invention does not limit the direction of the groundwater discharged from the main drainage pipe 200, as long as it can be discharged.

[0061] Furthermore, the expansion joints 101 around the current maintenance area 100 need to be deepened into the bottom slab structural layer 14, but it is not limited to installing drainage mains 200 in all of them. It is acceptable as long as there is a drainage main 200 installed in at least one of the expansion joints 101 around the area, and preferably the expansion joint 101 located near the water collection well 102. Of course, it is also acceptable to install drainage mains 200 in all four expansion joints 101, depending on the subsequent installation requirements of the drain outlet 103 and the connecting channel 104. At the same time, the installation of drainage mains 200 can be carried out before the first grouting operation, or after the first grouting operation and before the second grouting operation. The ports of drainage mains 200 can be connected or blocked.

[0062] Step S200: Perform the first grouting operation on the expansion joint 101 after cutting, wherein the grouting liquid in the first grouting operation is filled into the bottom plate surface layer 15 above the bottom plate structural layer 14.

[0063] Understandably, after cutting the expansion joint 101, grout is injected into the expansion joints 101 around the current maintenance area 100. The injection height of the grout reaches the bottom slab surface layer 15, allowing the grout to enter the interlayer gap between the bottom slab structural layer 14 and the bottom slab surface layer 15, and seal the interlayer gap to block the flow of groundwater. This separates the current maintenance area 100 from other areas, making it an independent zone. It should be noted that if the drainage main pipe 200 is installed after the first grouting operation, the injection height of the first grouting operation needs to allow for the pipe installation height. The grout used in the first grouting operation includes, but is not limited to, polyurea grout or epoxy grout for sealing.

[0064] Step S300: Perform the first sealing grouting operation on the leakage joint 105 on the bottom plate surface layer 15 of the current maintenance area 100.

[0065] Understandably, after a significant leakage crack 105 is found on the base slab surface layer 15 of the current maintenance area 100, a first sealing grouting operation can be performed on the leakage crack 105 to strengthen the seal and make the base slab surface layer 15 of the current maintenance area 100 a unified structure, preventing groundwater in the current maintenance area 100 from gushing out from the base slab surface layer 15. Furthermore, the first sealing grouting operation requires careful control of the grout volume; the grout should not excessively intrude into the interlayer gap between the base slab structural layer 14 and the base slab surface layer 15. The first sealing grouting operation includes, but is not limited to, using polyurea grout or epoxy grout.

[0066] Specifically, the first sealing grouting operation can be carried out by drilling holes first and then grouting. Since the leakage joint 105 is not a straight joint, but rather an approximately tree branch shape, the drilling can be carried out alternately on the left and right sides of the leakage joint 105, and the drilling angle is set to be inclined towards the leakage joint 105 from top to bottom.

[0067] In step S400, a drain outlet 103 is opened in the current maintenance area 100 to penetrate the bottom plate surface layer 15 for the installation of the groundwater lifting device 400.

[0068] Understandably, the opening of the drain outlet 103 creates a single drainage path within the current maintenance area 100. Installing the groundwater lifting device 400 within the drain outlet 103 allows groundwater entering the outlet to be lifted by the device and flow into the subsequent drainage branch pipe 300. Since the groundwater itself has pressure, if the pressure is high enough, automatic drainage can be achieved through the groundwater lifting device 400, drainage branch pipe 300, and main drainage pipe 200, requiring no power. If the water pressure is low, a water pump can be connected to the main drainage pipe 200 at the sump 102 to achieve active drainage.

[0069] Specifically, the drain outlet 103 only needs to penetrate the surface layer 15 of the base plate, without needing to reach the structural layer 14. That is, the drain outlet 103 only needs to reach the interlayer gap between the structural layer 14 and the surface layer 15 of the base plate. More specifically, the number of drain outlets 103 in the current maintenance area 100 can be one or more. When the leakage is small and there is only one leakage joint 105, the number of drain outlets 103 can be one, and the drain outlet 103 can be drilled at the end of the leakage joint 105 closer to the main drainage pipe 200. When the leakage is large or there are multiple leakage joints 105, the number of drain outlets 103 can be multiple.

[0070] In step S500, a connecting groove 104 is provided between the drain outlet 103 and the expansion joint 101 to facilitate the installation of the drainage branch pipe 300 connecting the groundwater lifting device 400 and the main drainage pipe 200.

[0071] Understandably, in order to connect the groundwater lifting device 400 at the drain outlet 103 with the main drainage pipe 200 in the expansion joint 101, a connecting trench 104 can be opened first, followed by the laying of the drainage branch pipe 300. The connecting trench 104 should be set perpendicular to the expansion joint 101 to minimize the pipe laying distance. Specifically, both ends of the drainage branch pipe 300 can be connected to the main drainage pipe 200 and the groundwater lifting device 400, respectively.

[0072] In step S600, a second grouting operation is performed on the drain outlet 103, the connecting groove 104 and the expansion joint 101, wherein the grouting liquid in the second grouting operation fills the bottom plate surface layer 15.

[0073] Specifically, before the second grouting operation, the groundwater lifting device 400, the main drainage pipe 200, and the branch drainage pipe 300 have all been installed. Meanwhile, the materials used in the second grouting operation can be different at different locations. For example, the grouting material for the drain outlet 103 and connecting channel 104 within the current maintenance area 100 can be the same as the material of the base slab surface layer 15, while the grouting material for the expansion joints 101 around the current maintenance area 100 can be a sealant material, consistent with the material used in the first grouting operation.

[0074] Step S700: Restore the finish layer 16 of the current repair area 100.

[0075] When using the above-mentioned method for repairing basement floor leakage, the expansion joints 101 around the current repair area 100 can be cut to the bottom slab structural layer 14. Then, a first grouting operation is performed on the cut expansion joints 101. The grouting fluid in the first grouting operation fills the bottom slab surface layer 15 above the bottom slab structural layer 14. This means the grouting fluid in the first grouting operation can seal the interlayer gaps between the bottom slab structural layer 14 and the bottom slab surface layer 15 around the current repair area 100, thus separating the current repair area 100 from other areas and creating an independent area. A first sealing grouting operation is also performed on the leakage joints 105 within the current repair area 100, making the bottom slab surface layer 15 within the area a sealed whole. A drainage outlet 1 that penetrates the bottom slab surface layer 15 is then provided in the current repair area 100. 03, and a connecting groove 104 is provided between the drain outlet 103 and the expansion joint 101, so that after the groundwater lifting device 400 is installed in the drain outlet 103, the drainage branch pipe 300 is installed in the connecting groove 104, and the drainage main pipe 200 is installed in the expansion joint 101, the groundwater in the current maintenance area 100 can be discharged. The above-mentioned groove diversion method makes full use of the existing expansion joint 101, ensuring the aesthetics of the basement floor. At the same time, through the first grouting operation and the first sealing grouting operation, the groundwater in the current maintenance area 100 can only flow through the drain outlet 103, making it difficult for new leaks to occur. Even if new cracks appear in the current maintenance area 100, it is only necessary to grout the leakage crack 105 of the bottom slab surface layer 15 to strengthen the seal, without the need for additional construction operations.

[0076] In one embodiment, step S400, which involves creating a drainage outlet 103 that penetrates the bottom slab surface layer 15 in the current maintenance area 100 for the installation of the groundwater lifting device 400, includes:

[0077] Step S410: Select the first end of the first leakage seam among the multiple leakage seams 105 in the current maintenance area 100 and open a candidate opening to penetrate the bottom plate surface layer 15.

[0078] Understandably, multiple leakage joints 105 may exist within the current maintenance area 100. After the first sealing grouting operation is performed on each of the multiple leakage joints 105, a hole can be drilled at any end (i.e., the first end) of any one of the leakage joints 105 (i.e., the first leakage joint). The selected hole is the drain outlet 103. It should be noted that during the first sealing grouting operation on the multiple leakage joints 105, in order to determine whether there is internal communication between the multiple leakage joints 105, the leakage joints 105 that have not been drilled with the selected hole can retain a reserved overflow outlet.

[0079] Step S420: Perform a tracing operation on the first leakage joint at the candidate outlet.

[0080] Specifically, a grouting machine can be used to inject colored tracer liquid into the candidate port or an air compressor can be used to inject colored tracer gas into the candidate port to confirm whether there are other leakage joints 105 connected to the first leakage joint.

[0081] In step S430, if the first leakage joint is determined to be an independent joint based on the tracing operation results, the candidate outlet is determined as the drain outlet 103 of the first leakage joint for installation by the groundwater lifting device 400.

[0082] Understandably, after the tracing operation is carried out, the tracing operation results may fall into the first category: if no tracer liquid or tracer gas overflows in the current maintenance area 100, it indicates that the first leakage seam is an independent seam. In this case, the candidate opening can be determined as the drain outlet 103 of the first leakage seam.

[0083] In step S440, if the first leakage joint and other leakage joints 105 are determined to be connected joints based on the tracing operation results, the hole drilled at the candidate port or the overflow point of the tracing operation is used as the drain port 103 of the connected joint for the installation of the groundwater lifting device 400.

[0084] Understandably, after the tracing operation, there may be a second scenario: tracer liquid or tracer gas overflows within the current maintenance area 100, indicating that the first leakage joint is not an independent joint and is connected to other leakage joints 105. In this case, one of the candidate outlet and the overflow point of the tracing operation can be selected as the location of the drain outlet 103. If the candidate outlet is selected, the overflow point of the tracing operation will not be drilled, and the overflow point will be sealed with grout. If the overflow point of the tracing operation is selected, the candidate outlet can be sealed with grout, and a hole can be drilled at the overflow point to form the drain outlet 103. It should be noted that if the overflow point of the tracing operation is the aforementioned reserved overflow outlet, the drain outlet 103 can be drilled directly. If the overflow point of the tracing operation is not the aforementioned reserved overflow outlet, but an unknown hidden leakage joint 105, the overflow point should be sealed with grout first, and then the drain outlet 103 should be drilled at the overflow point.

[0085] Therefore, the presence of connecting joints can be determined through tracing operations, allowing these joints to share the same drainage outlet 103, thus reducing the number of drainage outlets 103 and groundwater lifting devices 400. Specifically, the above operation can also locate hidden leakage joints 105 within the current maintenance area 100. The first sealing grouting operation can only seal and grout the obvious leakage joints 105 visible from the surface layer. If the tracer liquid or tracer gas overflows from other locations instead of the reserved overflow outlet, it proves that the joint connected to the first leakage joint is a hidden leakage joint 105.

[0086] In addition, if the groundwater pressure is particularly high and leakage is severe with a large volume of seepage, see [reference needed]. Figure 6 Grid-distributed drainage can be used within the current maintenance area 100, meaning that there is no need for tracing operations; multiple drainage outlets 103 can be directly opened in the current leakage area according to the grid distribution.

[0087] In one embodiment, step S440, when it is determined from the tracing operation results that the first leakage joint and other leakage joints 105 are connected joints, the drilling of the selected port or the overflow point of the tracing operation is used as the drainage outlet 103 of the connected joint for the installation of the groundwater lifting device 400, includes:

[0088] In step S450, if the tracing operation shows overflow from other leakage joints 105, the first leakage joint and other leakage joints 105 are determined to be connected joints.

[0089] Step S460: Select the optimal pipe routing path for the drainage branch pipe 300 from among the candidate outlets and the overflow point of the tracing operation.

[0090] In step S470, if the pipe laying path from the selected port is optimal, a second sealing grouting operation is performed on the overflow point, and the selected port is used as the drain outlet 103 of the connecting joint.

[0091] In step S480, if the pipe laying path from the overflow point of the tracing operation is optimal, then a second sealing grouting operation is performed on the selected port, and the hole at the overflow point of the tracing operation is used as the drain outlet 103 of the connecting joint.

[0092] Specifically, by selecting the optimal pipe routing path between the candidate outlet and the overflow point of the tracing operation as the location of the drain outlet 103, the drainage path can be optimized and the drainage rate can be faster. The optimal pipe routing path can be determined by minimizing the length of the drainage branch pipe 300, i.e., minimizing the distance from the drain outlet 103 to the nearest main drainage pipe 200; or by minimizing the distance from the drain outlet 103 to the collection well 102, i.e., minimizing the length of the drainage branch pipe 300 plus the main drainage pipe 200 between the drain outlet 103 and the collection well 102. The specific choice depends on actual needs. It should be noted that in step S480, if the overflow point of the tracing operation is the aforementioned reserved overflow outlet, the drain outlet 103 can be directly drilled. If the overflow point of the tracing operation is not the aforementioned reserved overflow outlet, but an unknown hidden leakage crack 105, the overflow point should be grouted and sealed first, and then the drain outlet 103 should be drilled at the overflow point.

[0093] In one embodiment, step S430, after determining that the first leakage joint is an independent joint based on the tracing operation results, and designating the candidate outlet as the drainage outlet 103 of the first leakage joint for installation of the groundwater lifting device 400, further includes:

[0094] Continue to open and trace other leaking joints 105.

[0095] Understandably, there may be multiple leakage seams 105 within the current maintenance area 100. After the first leakage seam among the multiple leakage seams 105 is determined to be an independent seam after tracing, the next leakage seam 105 among the multiple leakage seams 105 is prepared and tracing is carried out to explore whether the next leakage seam 105 is an independent seam or a connected seam with other leakage seams 105, and then determine whether the next leakage seam 105 has a separate drain outlet 103 or shares a drain outlet 103 with other leakage seams 105, until all leakage seams 105 have a corresponding drain outlet 103.

[0096] In one embodiment, step S410, selecting the first end of a first leakage seam from among the plurality of leakage seams 105 in the current maintenance area 100 to have a candidate opening for penetrating the bottom plate surface layer 15, includes:

[0097] Among the multiple leakage joints 105 in the current maintenance area 100, the first leakage joint is selected and a candidate opening for penetrating the bottom plate surface layer 15 is opened at the end closest to the expansion joint 101.

[0098] Understandably, selecting the end closest to the expansion joint 101 on the first leakage joint for the selection of the opening can minimize the distance of the connecting groove 104, which is beneficial to ensuring the integrity of the bottom plate surface layer 15.

[0099] In one embodiment, step S300, performing the first sealing grouting operation on the leakage crack 105 on the bottom slab surface layer 15 of the current maintenance area 100, includes:

[0100] Step S310: Clean up the accumulated water in the current maintenance area 100.

[0101] Step S320: If leakage occurs again in the current maintenance area 100, the first sealing grouting operation is carried out on the leakage crack 105 on the bottom plate surface layer 15 of the current maintenance area 100.

[0102] Step S330: If the current maintenance area 100 no longer leaks, then cut the expansion joints 101 around the adjacent area and perform the first grouting operation.

[0103] Specifically, some basement floor leakage marks may occur in the expansion joint 101 area, and the leakage marks may span at least two empty spaces. You can first select one of the empty spaces as the current maintenance area 100. After step S200, since the first grouting operation can separate the current maintenance area 100 from other areas and make it an independent area, if leakage occurs again in the current maintenance area 100 after cleaning up the water, it proves that there is a leakage crack 105 in the current maintenance area 100 and the first sealing grouting operation can continue. If there is no more leakage in the current maintenance area 100, it proves that there is no leakage crack 105 in the current maintenance area 100. The previous leakage traces may have been caused by leakage from a leakage crack 105 in another empty space. At this time, another adjacent empty space can be selected to return to step S100, cut the expansion joints 101 around the perimeter, and perform the first grouting operation after cutting the cracks to investigate again whether there is a leakage crack 105 that has caused leakage traces in the current empty space, until an empty space with a leakage crack 105 that has caused leakage traces is found.

[0104] In one embodiment, step S300, before performing the first grouting operation on the expansion joint 101 after cutting, further includes:

[0105] Rinse the expansion joint 101 after cutting.

[0106] Understandably, rinsing can remove dust and other impurities from the expansion joint 101, thereby improving the strength of subsequent grouting operations. Specifically, high-pressure water can be used for rinsing.

[0107] In one embodiment, step S600, performing a second grouting operation on the drain outlet 103, the connecting groove 104, and the expansion joint 101, includes:

[0108] Step S610: Apply waterproof coating to the inner walls of the drain outlet 103 and the connecting groove 104.

[0109] Specifically, the inner walls of the drain outlet 103 and the connecting channel 104 can be coated with a waterproof coating, specifically a 2mm thick special functional backwater pressure waterproof coating, to improve the overall impermeability of the unit. Simultaneously, waterproof coating application can also be carried out within a 1m radius extending outwards from the drain outlet 103 and the connecting channel 104.

[0110] In step S620, a second grouting operation is performed on the drain outlet 103 and the connecting channel 104 using mortar.

[0111] Step S630: Use the same grouting fluid as the first grouting operation to perform a second grouting operation on the expansion joint 101.

[0112] Understandably, since the drain outlet 103 and the connecting channel 104 are within the current maintenance area 100, using the same mortar material as the base plate surface layer 15, and selecting the same grouting liquid for the second grouting operation of the expansion joint 101 as for the first grouting operation, both contribute to ensuring aesthetics and structural integrity. The grouting liquid used in the second grouting operation and the first grouting operation can include, but is not limited to, polyurea grouting liquid or epoxy grouting liquid used for sealing joints. It should be specifically noted that step S630 includes, but is not limited to, following step S620; other reasonable sequences are also acceptable.

[0113] In one embodiment, the basement floor leakage repair method further includes:

[0114] When the groundwater pressure exceeds a set threshold, the groundwater lifting device 400 is configured as a straight pipe lifting device.

[0115] When the groundwater pressure is less than a set threshold, the groundwater lifting device 400 is set as a capillary lifting device.

[0116] Understandably, when the groundwater pressure is high, using a straight pipe lifting device as the groundwater lifting device 400 is beneficial to improving drainage efficiency; when the groundwater pressure is low, using a capillary lifting device as the groundwater lifting device 400 is beneficial to lifting groundwater due to its capillary self-priming performance.

[0117] Specifically, the repair methods for basement floor leaks include the following steps:

[0118] 1. Cut all expansion joints around the current maintenance area to the bottom structural layer to allow for the installation of drainage mains;

[0119] 2. Rinse the expansion joint after cutting. A high-pressure water gun can be used for rinsing. The gap must be free of dust and other impurities.

[0120] 3. Perform the first grouting operation on the expansion joint after cutting the joint. The grouting liquid in the first grouting operation is filled into the surface layer of the bottom plate above the bottom plate structural layer.

[0121] 4. Clean up any accumulated water in the current repair area;

[0122] 5. If leakage occurs again in the current repair area, the first sealing grouting operation shall be carried out on the leakage joints on the bottom slab surface of the current repair area;

[0123] 6. Among the multiple leakage joints in the current maintenance area, the first end of the first leakage joint is selected as a candidate opening to penetrate the bottom plate surface layer;

[0124] 7. Conduct a tracing operation on the first leakage joint at the candidate site;

[0125] 8. If the first leakage joint is determined to be an independent joint based on the results of the tracing operation, the candidate port shall be designated as the drainage outlet of the first leakage joint for the installation of the groundwater lifting device; or if the first leakage joint is determined to be connected to other leakage joints as a connected channel based on the results of the tracing operation, the hole drilled at the candidate port or the overflow point of the tracing operation shall be designated as the drainage outlet of the connected channel for the installation of the groundwater lifting device.

[0126] 9. Continue to open and trace other leaking joints until all leaking joints in the current maintenance area have corresponding drainage outlets.

[0127] 10. A connecting groove is provided between the drain outlet and the expansion joint;

[0128] 11. Install main drainage pipes, branch drainage pipes, and groundwater lifting devices;

[0129] 12. Perform a second grouting operation on the drain outlet, connecting groove and expansion joint, wherein the grouting liquid in the second grouting operation fills the bottom plate surface layer;

[0130] 13. Restore the finish layer of the currently repaired area.

[0131] The following description, with reference to the accompanying drawings, describes the groundwater lifting device with capillary function and the drainage system for leakage repair provided by this utility model.

[0132] In addition, see Figures 3 to 6 This utility model also provides a drainage system for leakage repair, wherein the drainage system for leakage repair includes a drainage pipe assembly and a groundwater lifting device, and the drainage pipe assembly can be connected to the upper end of the groundwater lifting device.

[0133] Specifically, the drainage pipe assembly may include a main drainage pipe 200 and branch drainage pipes 300. The main drainage pipe 200 may be placed within the expansion joint 101; the branch drainage pipes 300 may be placed within the connecting groove 104 and connected at both ends to the main drainage pipe 200 and the groundwater lifting device 400, respectively. The groundwater lifting device 400 may be placed within the drain outlet 103 and is preferably a lifting device with capillary function.

[0134] See Figure 7 as well as Figures 9 to 11 The first embodiment of this utility model provides a groundwater lifting device with capillary function, wherein the groundwater lifting device with capillary function has a lifting cylinder 410, the lifting cylinder 410 comprising:

[0135] The straight cylindrical section 411, the capillary cylindrical section, and the sealing cylindrical section 415 are arranged sequentially from bottom to top. A first sealing ring 416 is fitted on the outer periphery of the sealing cylindrical section 415. The lower end of the straight cylindrical section 411 is open. There are gaps between the straight cylindrical section 411 and the capillary cylindrical section and the wall of the drain outlet 103 in the circumferential direction. The inner cavity of the capillary cylindrical section is connected vertically to the inner cavities of the straight cylindrical section 411 and the sealing cylindrical section 415. Multiple capillary channels 420 are spaced apart on the outer periphery of the capillary cylindrical section in the circumferential direction. Each capillary channel 420 is configured to be separated from the inner cavity of the capillary cylindrical section and connected to the inner cavity of the sealing cylindrical section 415. The above configuration allows the groundwater lifting device to be a capillary lifting device. When groundwater surges upwards, it has two paths: one is the lower opening of the straight section 411 – the inner cavity of the straight section 411 – the inner cavity of the capillary section – the inner cavity of the sealed section 415, suitable for situations with high groundwater pressure; the other is the gap between the capillary section and the wall of the drain outlet 103 – the capillary channel 420 – the inner cavity of the sealed section 415. Due to the capillary function of the capillary channel 420, it is suitable for situations with lower groundwater pressure. Therefore, even under low groundwater pressure, the groundwater lifting device provided by this invention can achieve autonomous lifting and drainage, raising the groundwater to the inner cavity of the sealed section and discharging it through other pipes, achieving the purpose of lifting and drainage. Simultaneously, the inner cavities of the straight section 411, the capillary section, and the sealed section 415 are vertically connected, which also allows for the sedimentation of silt in the inner cavity of the sealed section 415.

[0136] Specifically, by adding the first sealing ring 416, the gap between the hole wall of the drain outlet 103 and the lifting cylinder 410 can be sealed, ensuring that groundwater can only flow sequentially from the inner cavity of the lifting cylinder 410 to the inner cavity of the docking cover 450, the inner cavity of the joint 451, and the drain pipe assembly. Specifically, the number of first sealing rings 416 can be at least two, and the outer periphery of the sealing cylinder section 415 of the lifting cylinder 410 is provided with at least two first sealing grooves for at least two first sealing rings 416 to be fitted one-to-one.

[0137] In addition, see Figure 12 In the second embodiment of this utility model, the lifting cylinder 410 includes a straight cylinder section 411 and a sealed cylinder section 415 arranged sequentially from bottom to top, and no capillary cylinder section is provided. This allows the groundwater lifting device 400 to be set as a straight pipe lifting device, which is particularly suitable for situations where the groundwater pressure is high.

[0138] Please see again Figure 7 as well as Figures 9 to 11In the first embodiment of this utility model, the straight cylindrical section 411 extends vertically in a straight cylindrical shape. The capillary section is configured to have the same outer diameter as the straight cylindrical section 411 and includes a first capillary section 412 and a second capillary section 413 arranged sequentially from bottom to top. The wall thickness of the first capillary section 412 is greater than the wall thickness of the straight cylindrical section 411, thereby enabling the construction of an outer ring capillary section 421 on the first capillary section 412. The wall thickness of the second capillary section 413 is greater than the wall thickness of the first capillary section 412, thereby enabling the construction of an outer ring capillary section 421 and a first inner ring capillary section arranged sequentially from the outside to the inside on the second capillary section 413. The inner diameters of the straight section 411, the first capillary section 412, and the second capillary section 413 gradually decrease, forming a two-stage stepped arrangement. The capillary channel 420 includes an outer ring capillary section 421 and a first inner ring capillary section 422. The outer ring capillary section 421 is laterally open and extends from the first capillary section 412 to the second capillary section 413. The first inner ring capillary section 422 extends vertically on the second capillary section 413 and is located inside the outer ring capillary section 421, so that the first inner ring capillary section 422 communicates radially with the outer ring capillary section 421 and communicates vertically with the inner cavity of the sealed cylinder section 415. Groundwater can enter the outer capillary section 421 through its lateral opening, and then enter the inner cavity of the sealing cylinder section 415 via the first inner capillary section 422. Since the outer capillary section 421 exists in both the first and second capillary sections 412 and 413, while the first inner capillary section 422 exists only in the second capillary section 413, and the length of the first inner capillary section 422 is shorter than that of the outer capillary section 421, the capillary self-priming effect is significant. To achieve vertical communication between the first inner capillary section 422 and the inner cavity of the sealing cylinder section 415, the inner diameter of the second capillary section 413 can be set to be smaller than the inner diameter of the sealing cylinder section 415, so that the inner cavity of the sealing cylinder section 415 has space to communicate with the upper end of the first inner capillary section 422. Of course, this utility model is not limited to this. It is also possible to have only one capillary tube section. Furthermore, the capillary channel 420 does not need to be a full-length opening on the outer periphery of the entire capillary tube section for groundwater to enter. It is sufficient to have only one inlet in a local area.

[0139] In the first embodiment of this utility model, a first partition portion 430 is provided between the inner cavity of the straight cylindrical section 411 and the inner cavity of the first capillary section 412, and a plurality of first through holes 431 are spaced apart on the first partition portion 430; a second partition portion 440 is provided between the inner cavity of the first capillary section 412 and the inner cavity of the second capillary section 413, and a plurality of second through holes 441 are spaced apart on the second partition portion 440. The addition of the first partition portion 430 and the second partition portion 440 serves to strengthen the structure on the one hand, and to prevent silt from flowing up when groundwater rises on the other hand. Specifically, the diameter of the first through holes 431 can be set to be larger than the diameter of the second through holes 441 to achieve step-by-step filtration.

[0140] In the first embodiment of this utility model, the cross-sectional shape of the outer capillary segment 421 is set as a first circle 424 with an opening, and the cross-sectional shape of the first inner capillary segment 422 is set as a second circle 425. The center of the first circle 424 and the center of the second circle 425 on the same capillary channel 420 are both in the same radial direction of the capillary segment, so that the upward flow of groundwater is smoother. The diameter of the second circle 425 is smaller than the diameter of the first circle 424, so as to improve the capillary self-absorption effect. The second capillary segment 413 is also provided with a first connecting segment 426, so as to radially connect the outer capillary segment 421 and the first inner capillary segment 422 through the first connecting segment 426. The first connecting segment 426 is necked in cross-section between the first circle 424 and the second circle 425. It should be noted that the aforementioned necking refers to the fact that the width of the first pair of through sections 426 in cross-section is smaller than the diameter of the first circle 424 and the second circle 425. The addition of the first pair of through sections 426 allows the lifting cylinder 410 to have more solid portion around the circumference of the first pair of through sections 426, ensuring strength, and also enhances the capillary self-priming effect. Furthermore, the cross-sectional shapes of the outer capillary section 421 and the first inner capillary section 422 can also be approximated by other shapes, such as squares or triangles, as long as the cross-sectional area of ​​the first inner capillary section 422 is smaller than the cross-sectional area of ​​the outer capillary section 421. Moreover, it is also possible for the outer capillary section 421 and the first inner capillary section 422 to be directly connected without the first pair of through sections 426 between them.

[0141] In the first embodiment of this utility model, the capillary section further includes a third capillary section 414 located above the second capillary section 413. The wall thickness of the third capillary section 414 is greater than the wall thickness of the second capillary section 413, thereby allowing the construction of an outer ring capillary section 421, a first inner ring capillary section 422, and a second inner ring capillary section 423 arranged sequentially from the outside to the inside on the third capillary section 414. Furthermore, the inner diameters of the straight section 411, the first capillary section 412, the second capillary section 413, and the third capillary section 414 gradually decrease, forming a three-step arrangement. The capillary channel 420 also includes the second inner ring capillary section 423 and the outer ring capillary section 423. The thin segment 421 extends sequentially from the first capillary segment 412 to the second capillary segment 413 and the third capillary segment 414. The first inner ring capillary segment 422 extends from the second capillary segment 413 to the third capillary segment 414, such that the first inner ring capillary segment 422 is radially aligned with the outer ring capillary segment 421 in both the second capillary segment 413 and the third capillary segment 414. The second inner ring capillary segment 423 is located inside the first inner ring capillary segment 422 and extends vertically in the third capillary segment 414, such that the second inner ring capillary segment 423 is radially aligned with the first inner ring capillary segment 422 and vertically aligned with the inner cavity of the sealing cylinder segment 415. That is, groundwater can enter the outer capillary section 421 through the lateral opening of the outer capillary section 421, and then enter the inner cavity of the sealed cylinder section 415 in sequence through the first inner capillary section 422 and the second inner capillary section 423. Since the outer capillary section 421 exists in the first capillary cylinder section 412, the second capillary cylinder section 413 and the third capillary cylinder section 414, the first inner capillary section 422 exists in the second capillary cylinder section 413 and the third capillary cylinder section 414, and the second inner capillary section 423 exists only in the third capillary cylinder section 414, the lengths of the second inner capillary section 423, the first inner capillary section 422 and the outer capillary section 421 are set to gradually decrease, making the capillary self-priming effect more obvious.

[0142] In the first embodiment of this utility model, the second inner ring capillary segments 423 of the plurality of capillary channels 420 are arranged in a ring around the inner cavity of the third capillary tube segment 414 in cross-section, and the third capillary tube segment 414 is also provided with a second connecting segment 427. Each first inner ring capillary segment 422 is radially connected to the second inner ring capillary segment 423 through the corresponding second connecting segment 427. The second connecting segment 427 is necked in cross-section between the second circle 425 and the ring. The aforementioned necking means that the width of the second connecting segment 427 in cross-section is smaller than the diameter of the second circle 425.

[0143] In the first embodiment of this utility model, a backflow prevention device 460 may be provided at the upper end of the inner cavity of the capillary tube section and / or at the end where the capillary channel 420 communicates with the inner cavity of the sealing tube section 415. By adding the backflow prevention device 460, the phenomenon of groundwater backflow can be avoided.

[0144] Specifically, the anti-reverse device 460 can be provided on a rubber or silicone part and includes an annular plate portion 461 that fits against the inner wall and a pointed petal portion 462 provided on the annular plate portion 461. The entire inner circumference of the annular plate portion 461 is connected with the pointed petal portion 462. The center of the pointed petal portion 462 is a pointed tip, and the pointed tip can be convex upward under the bending and shaping action of the pointed petal portion 462. The pointed petal portion 462 can have a dividing slit at the pointed tip. Groundwater flowing from bottom to top can exert force on the lower side of the pointed tip to open the dividing slit, while the groundwater exerting force on the upper side of the pointed tip can only make the pointed tip fit tighter and tighter, and cannot open the dividing slit, thereby achieving anti-reverse. At the same time, the annular plate portion 461 can be connected to the inner wall by threads.

[0145] More specifically, a check valve 460 may be provided at the upper end of the inner cavity of the capillary section, and a check valve 460 may also be provided at the upper end of each first inner ring capillary section 422.

[0146] See Figure 5 , Figure 7 , Figure 8 and Figure 12 In one embodiment of this utility model, the groundwater lifting device includes a lifting cylinder 410 and a docking cover 450 detachably covering the upper end of the sealing cylinder section 415 of the lifting cylinder 410. The outer periphery of the docking cover 450 is provided with a connector 451, which can be connected to the drainage branch pipe 300 in the drainage pipe assembly. That is, the upper end of the sealing cylinder section 415 of the lifting cylinder 410 is open and is provided with a docking cover 450 that can be detachably sealed. By making the docking cover 450 detachable, it is convenient to install and connect it with the drainage pipe assembly.

[0147] Specifically, a third sealing ring 453 may be fitted on the outer periphery of the connector 451 to facilitate a sealed connection with the drainage branch pipe 300.

[0148] Please see again Figure 8 In one embodiment of this utility model, the lower end of the docking cover 450 is detachably inserted into the upper end of the lifting cylinder 410 to cover the upper opening of the lifting cylinder 410, and a second sealing ring 452 is provided between the docking cover 450 and the lifting cylinder 410. The detachable connection between the docking cover 450 and the lifting cylinder 410 facilitates installation at the drain outlet 103 and connection with the drain branch pipe 300. The addition of the second sealing ring 452 provides a sealing effect between the docking cover 450 and the lifting cylinder 410. Specifically, there can be at least two second sealing rings 452, and at least two second sealing grooves are provided on the outer periphery of the docking cover 450 for corresponding fitting of at least two second sealing rings 452.

[0149] Furthermore, the lifting cylinder 410 provided in the first embodiment of this utility model can be configured as a 3D printed part for easy molding and processing.

[0150] See Figure 8 and Figure 13 In one embodiment of this utility model, the number of connectors 451 is set to at least two. At least two of the four points evenly distributed on the outer periphery of the connecting cover 450 are selected for one-to-one correspondence, thereby enabling the groundwater lifting device 400 to connect to at least two drainage branch pipes 300. Specifically, the number of connectors 451 can be one, two, three, or four, to respectively realize single-pass, double-pass, three-pass, and four-pass connections.

[0151] In one embodiment of this utility model, the drainage system for leakage repair also includes a water pump, which can be connected to the main drainage pipe 200 for active drainage, thereby improving drainage efficiency and effect, and is particularly suitable for situations with large leakage and low water pressure. Specifically, the water pump casing is connected to the main drainage pipe 200 at the collection well 102.

[0152] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0153] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0154] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0155] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A groundwater lifting device with capillary function, characterized in that, The groundwater lifting device has a lifting cylinder (410), which includes: The structure consists of a straight cylindrical section (411), a capillary cylindrical section, and a sealing cylindrical section (415) arranged sequentially from bottom to top. A first sealing ring (416) is fitted on the outer periphery of the sealing cylindrical section (415) to seal against the wall of the drain outlet (103). The lower end of the straight cylindrical section (411) is open. There is a gap between the straight cylindrical section (411) and the capillary cylindrical section and the wall of the drain outlet (103) in the circumferential direction. The inner cavity of the capillary cylindrical section is connected vertically to the inner cavities of the straight cylindrical section (411) and the sealing cylindrical section (415). The outer periphery of the capillary cylindrical section is provided with a plurality of capillary channels (420) spaced apart in the circumferential direction. Each capillary channel (420) is configured to be separated from the inner cavity of the capillary cylindrical section and connected to the inner cavity of the sealing cylindrical section (415).

2. The groundwater lifting device with capillary function according to claim 1, characterized in that, The capillary section is configured to have the same outer diameter as the straight section (411) and includes a first capillary section (412) and a second capillary section (413) arranged sequentially from bottom to top. The wall thickness of the first capillary section (412) is greater than the wall thickness of the straight section (411), and the wall thickness of the second capillary section (413) is greater than the wall thickness of the first capillary section (412). The capillary channel (420) includes an outer ring capillary section (421) and a first inner ring capillary section (422). The outer capillary segment (421) is laterally open and extends from the first capillary segment (412) to the second capillary segment (413). The first inner capillary segment (422) extends vertically on the second capillary segment (413) and is located inside the outer capillary segment (421), so that the first inner capillary segment (422) communicates radially with the outer capillary segment (421) and communicates vertically with the inner cavity of the sealing cylinder segment (415).

3. The groundwater lifting device with capillary function according to claim 2, characterized in that, A first partition (430) is provided between the inner cavity of the straight section (411) and the inner cavity of the first capillary section (412), and a plurality of first through holes (431) are provided on the first partition (430) at intervals. And / or, a second partition portion (440) is provided between the inner cavity of the first capillary section (412) and the inner cavity of the second capillary section (413), and a plurality of second through holes (441) are provided on the second partition portion (440) at intervals.

4. The groundwater lifting device with capillary function according to claim 2, characterized in that, The outer capillary segment (421) has a cross-sectional shape of a first circle (424) with an opening, and the first inner capillary segment (422) has a cross-sectional shape of a second circle (425). The center of the first circle (424) and the center of the second circle (425) on the same capillary channel (420) are both in the same radial direction of the capillary segment, and the diameter of the second circle (425) is smaller than the diameter of the first circle (424). The second capillary segment (413) is also provided with a first connecting segment (426) to radially connect the outer capillary segment (421) and the first inner capillary segment (422) through the first connecting segment (426). The first connecting segment (426) is necked in cross-section between the first circle (424) and the second circle (425).

5. The groundwater lifting device with capillary function according to claim 2, characterized in that, The capillary segment further includes a third capillary segment (414) located above the second capillary segment (413), the wall thickness of the third capillary segment (414) being greater than the wall thickness of the second capillary segment (413). The capillary channel (420) further includes a second inner ring capillary segment (423). The outer ring capillary segment (421) extends sequentially from the first capillary segment (412) to the second capillary segment (413) and the third capillary segment (414). The first inner ring capillary segment (422) extends from the second capillary segment (413) to... The third capillary section (414) is configured such that the first inner capillary section (422) is radially aligned with the outer capillary section (421) on both the second capillary section (413) and the third capillary section (414). The second inner capillary section (423) is located inside the first inner capillary section (422) and extends vertically on the third capillary section (414), such that the second inner capillary section (423) is radially aligned with the first inner capillary section (422) and vertically aligned with the inner cavity of the sealing section (415).

6. The groundwater lifting device with capillary function according to any one of claims 1 to 5, characterized in that, The groundwater lifting device (400) also includes a docking cover (450) that is detachably installed on the upper end of the sealing cylinder section (415), and the outer periphery of the docking cover (450) is provided with a joint (451).

7. The groundwater lifting device with capillary function according to claim 6, characterized in that, The lower end of the docking cover (450) is detachably inserted into the upper end of the sealing cylinder section (415) to cover the upper opening of the lifting cylinder (410), and a second sealing ring (452) is provided between the docking cover (450) and the sealing cylinder section (415).

8. The groundwater lifting device with capillary function according to claim 6, characterized in that, The number of the connector (451) is set to at least two, and at least two of the four points evenly distributed on the outer periphery of the docking cover (450) are selected for one-to-one correspondence.

9. The groundwater lifting device with capillary function according to any one of claims 1 to 5, characterized in that, A check valve (460) may be provided at the upper end of the inner cavity of the capillary section and / or at the end of the capillary channel (420) that communicates with the inner cavity of the sealing section (415).

10. A drainage system for leak repair, characterized in that, The drainage system for leakage repair includes a drainage pipe assembly and a groundwater lifting device with capillary function according to any one of claims 1 to 9, wherein the drainage pipe assembly can be connected to the upper end of the groundwater lifting device.

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