A grouting pipe assembly and grouting system for repairing cracks in concrete walls

Abstract

This invention relates to the field of grouting pipe technology, specifically to a grouting pipe assembly and grouting system for repairing cracks in concrete walls. The assembly includes a main body, which comprises a detachable mounting body and a connecting body. The mounting body is positioned inside a repair hole and seals against the inner wall of the hole. The connecting body enables unidirectional injection of repair grout into the repair hole via the mounting body. This invention, by designing a grouting pipe assembly with a detachable mounting body and connecting body structure, allows for efficient unidirectional injection of repair grout into the repair hole while maintaining a good seal. This results in better repair of cracks in concrete walls and allows for the partial recyclability and practical use of the assembly.

Description

Technical Field

[0001] This invention relates to the field of grouting pipe technology, and more specifically, to a grouting pipe assembly and grouting system for repairing cracks in concrete walls. Background Technology

[0002] With the continuous acceleration of urbanization and the increasing number of construction projects, concrete walls are prone to cracking due to uneven foundation settlement, material deformation and shrinkage, or unreasonable design and construction.

[0003] Commonly used methods for repairing cracks in concrete walls in engineering include grouting repair, reinforced grouting repair, and grouting repair. Grouting repair is a method of injecting repair medium into the wall through grouting nozzles. First, repair holes are drilled in the wall, then grouting pipes are inserted into the repair holes, and finally the grouting system is connected to the grouting pipes to achieve grouting. The grouting pipes of this repair method are for single use and cannot be recycled or reused, resulting in high usage costs. Summary of the Invention

[0004] This invention provides a grouting pipe assembly and grouting system for repairing cracks in concrete walls, which can overcome some or all of the defects of the prior art.

[0005] According to the present invention, a grouting pipe assembly for repairing cracks in concrete walls includes an assembly body, the assembly body including a detachably fitted mounting body and a connecting body; the mounting body is used to be disposed inside the repair hole and to be sealed with the inner wall of the repair hole, and the connecting body is used to realize unidirectional grouting of repair grout into the repair hole through the mounting body.

[0006] In this invention, by sealing the mounting body with the inner wall of the repair hole, the mounting body can be fixed deep inside the repair hole. By setting a connecting body, the repair grout can be injected into the repair hole in one direction through the mounting body. The main body of the component is divided into a detachable mounting body and a connecting body, and the connecting body can be recycled.

[0007] Preferably, the mounting body includes a mounting body body, a first flow channel is provided through the inside of the mounting body body, one end of the mounting body body forms a slurry outlet end, and the other end of the mounting body body shrinks inward to form a first mating end;

[0008] The connector includes a connector body, a second flow channel is provided through the inside of the connector body, one end of the connector body forms a slurry inlet end, and the other end of the connector body shrinks inward to form a second mating end;

[0009] The first mating end and the second mating end are detachably connected. The grout inlet end is used to receive the repair grout. The first flow channel and the second flow channel are used to form a grouting channel when the main body of the mounting body and the main body of the connecting body are in the connected state. The grout outlet end is used to deliver the repair grout into the repair hole.

[0010] In this invention, the repair slurry is transported within the mounting body and the repair body through the first flow channel and the second flow channel, and the mounting body and the connector are fitted together through the first mating end and the second mating end, thereby achieving better assembly and disassembly of the mounting body and the connector.

[0011] Preferably, the outer wall of the first mating end is provided with a first thread, and the inner wall of the second mating end is provided with a second thread. The second thread and the first thread are used to engage to achieve a detachable connection between the first mating end and the second mating end.

[0012] The end of the first mating end is provided with a wrench groove with a regular hexagonal cross-section, and the outer wall of the slurry inlet end is constructed as a wrench part with a regular hexagonal cross-section.

[0013] In this invention, the first and second mating ends are disassembled and assembled through the first thread and the second thread, and the mounting body is inserted into the repair hole through the wrench groove, thereby achieving a better seal between the mounting body and the inner wall of the repair hole.

[0014] Preferably, a sealing mechanism is provided between the first mating end and the second mating end, and the sealing mechanism is used to achieve a sealing fit between the mounting body and the inner wall of the repair hole.

[0015] The sealing mechanism includes a first extrusion surface formed at a first mating end, a second extrusion surface formed at a second mating end, and a sealing ring disposed between the first extrusion surface and the second extrusion surface. The sealing ring is used to be fitted onto the second mating end. The first extrusion surface and the second extrusion surface are configured such that when the first mating end and the second mating end are in an assembled state, they exert axial pressure on the sealing ring. The sealing ring is used to deform outward when subjected to axial pressure.

[0016] In this invention, a sealing layer is formed between the first extrusion surface and the second extrusion surface by a sealing mechanism. The sealing layer prevents external air and liquid from entering the interior of the mounting body and the connecting body, and prevents the repair slurry inside the first flow channel and the second flow channel from overflowing into the main body of the component.

[0017] Preferably, the contracted area at the other end of the mounting body forms a first extrusion surface, and the contracted area at the other end of the connecting body forms a second extrusion surface.

[0018] The outer diameter of the first extrusion surface is not greater than the outer diameter of the main body of the mounting body, and the outer diameters of the second extrusion surface and the sealing ring are not greater than the outer diameter of the first extrusion surface.

[0019] The length of the first mating end is L1, the length of the second mating end is L2, the maximum mating length between the first thread and the second thread is L3, the length of the sealing ring is L, and L1+L2-L3<L<L1+L2.

[0020] In this invention, a compressive force is formed between the first extrusion surface and the second extrusion surface to compress the sealing ring, thereby achieving deformation of the sealing ring and strengthening the isolation effect between the first extrusion surface and the second extrusion surface against gas and liquid.

[0021] Preferably, the first extrusion surface is provided with a plurality of lifting holes at intervals along the circumference, and the lifting holes extend along the axial direction; the side wall of the mounting body is provided with a plurality of protrusion holes corresponding to the plurality of lifting holes, the protrusion holes extend along the radial direction, and the corresponding lifting holes and protrusion holes are connected.

[0022] The extension hole is used to movably install the extension rod in the radial direction, and the lifting hole is used to movably install the lifting rod in the axial direction; the extension rod can be fully retracted into the extension hole, and the lifting rod is used to force the extension rod to extend out of the extension hole when moving inward in the axial direction.

[0023] In this invention, the lifting hole is used to install the lifting rod, and the extension hole is used to install the extension rod. The lifting rod moves along the lifting hole when the first extrusion surface moves towards the second extrusion surface and is slidably connected with the extension rod, forcing the extension rod to move out of the mounting body along the extension hole and be squeezed into the repair hole, thereby achieving the locking of the mounting body.

[0024] Preferably, a one-way valve mechanism is provided between the first mating end and the second mating end. The one-way valve mechanism is used to realize one-way grouting of the repair slurry into the repair hole.

[0025] The one-way valve mechanism includes a valve core mounting groove formed at the first mating end and a valve core disposed at the valve core mounting groove. The valve core includes a sealing part, a retaining ring part, and a guide part connected in sequence. The guide part is used to form a clearance fit with the first flow channel. A valve core spring sleeved on the guide part is provided between the bottom wall of the valve core mounting groove and the retaining ring part. A conical first sealing surface is formed at the sealing part, and a conical second sealing surface is formed at the corresponding end of the second flow channel. The valve core spring is used to provide a clamping force for the first sealing surface and the second sealing surface to fit together when the first mating end and the second mating end are in the assembled state. An intermediate flow channel is provided through the retaining ring part.

[0026] In this invention, the one-way valve mechanism is used to realize the one-way injection of repair slurry from the second flow channel to the first flow channel, the sealing part of the valve core is used to realize the sealing between the valve core and the first flow channel, the retaining ring part is used to realize the installation of the valve core spring, and the guide part is used to cooperate with the first flow channel to realize the guidance of the valve core.

[0027] Preferably, the grout outlet end of the installation body is provided with a grouting nozzle, and a double-helix turbulent channel is formed inside the grouting nozzle.

[0028] In this invention, the grouting nozzle is used to inject repair grout from the main body of the component into the repair hole. The double helical turbulent channel inside the grouting nozzle changes the horizontal flow of the repair grout in the first flow channel into turbulent flow, thereby improving the fluidity of the repair grout in the repair hole and improving the grouting efficiency.

[0029] Preferably, the slurry inlet end of the connector is provided with a quick-connect interface.

[0030] In this invention, the quick-connect interface is used to enable quick connection and disconnection between the second flow channel of the connector and the repair slurry delivery pipe.

[0031] The present invention also provides a grouting system for repairing cracks in concrete walls:

[0032] It includes any of the grouting pipe assemblies described above. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the main structure of the component in Example 1.

[0034] Figure 2 for Figure 1 An exploded view of the main body of the intermediate component.

[0035] Figure 3 for Figure 1 A half-section view of the main body of the component.

[0036] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0037] Figure 5 for Figure 3 A magnified view of section B in the middle.

[0038] Figure 6 for Figure 1 A schematic diagram of the structure of the mounting body.

[0039] Figure 7 for Figure 1 Top view of the installation body.

[0040] Figure 8 for Figure 1 Half-sectional view of the mounting body.

[0041] Figure 9 yes Figure 1 A schematic diagram of the structure of the connecting body.

[0042] Figure 10 yes Figure 3 A schematic diagram of the structure of the middle valve core. Detailed Implementation

[0043] To further understand the content of this invention, the invention will be described in detail with reference to the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0044] Example 1

[0045] like Figure 1-8 This embodiment provides a grouting pipe assembly for repairing cracks in concrete walls, which includes an assembly body 100, and the assembly body 100 includes a detachably fitted mounting body 110 and a connecting body 120.

[0046] The mounting body 110 includes a mounting body 210, with a first flow channel 413 extending through the interior of the mounting body 210. One end of the mounting body 210 forms a slurry outlet end 512, and the other end of the mounting body 210 contracts inward to form a first mating end 816. The connecting body 120 includes a connecting body 220, with a second flow channel 322 extending through the interior of the connecting body 220. One end of the connecting body 220 forms a slurry inlet end 323, and the other end of the connecting body 220 contracts inward to form a second mating end 925. In this embodiment, the outer wall of the first mating end 816 is provided with a first thread 817, and the inner wall of the second mating end 925 is provided with a second thread 926. The second thread 926 and the first thread 817 are used to cooperate to realize the detachable connection between the first mating end 816 and the second mating end 925. The end of the first mating end 816 is provided with a wrench groove 718 with a cross-section of regular hexagon. The outer wall of the grout inlet end 323 is constructed into a wrench part 924 with a cross-section of regular hexagon. The grout inlet end 323 is used to receive the repair grout. The first flow channel 413 and the second flow channel 322 are used to form a grouting channel when the mounting body 210 and the connecting body 220 are in the connected state. The grout outlet end 512 is used to realize the delivery of the repair grout into the repair hole.

[0047] A sealing mechanism 130 is provided between the first mating end 816 and the second mating end 925. The sealing mechanism 130 is used to achieve a sealing fit between the mounting body 110 and the inner wall of the repair hole. The sealing mechanism 130 includes a first extrusion surface 431 formed at the first mating end 816, a second extrusion surface 432 formed at the second mating end 925, and a sealing ring 230 disposed between the first extrusion surface 431 and the second extrusion surface 432. The sealing ring 230 is used to be sleeved at the second mating end 925. The first extrusion surface 431 and the second extrusion surface 432 are configured such that when the first mating end 816 and the second mating end 925 are in the assembled state, they form an axial pressure on the sealing ring 230. The sealing ring 230 is used to deform outward when subjected to axial pressure. In this embodiment, the contracted area at the other end of the mounting body 210 forms a first extrusion surface 431, and the contracted area at the other end of the connecting body 220 forms a second extrusion surface 432. The outer diameter of the first extrusion surface 431 is not greater than the outer diameter of the mounting body 210, and the outer diameters of the second extrusion surface 432 and the sealing ring 230 are both not greater than the outer diameter of the first extrusion surface 431. The length of the first mating end 816 is L1, the length of the second mating end 925 is L2, the maximum mating length of the first thread 817 and the second thread 926 is L3, and the length of the sealing ring 230 is L, where L1+L2-L3<L<L1+L2.

[0048] The first extrusion surface 431 is provided with a plurality of lifting holes 715 spaced circumferentially, and the lifting holes 715 extend axially. The side wall of the mounting body 210 is provided with a plurality of protrusion holes 614 corresponding to the plurality of lifting holes 715. The protrusion holes 614 extend radially, and the corresponding lifting holes 715 and protrusion holes 614 are connected. The protrusion holes 614 are used to movably install the protrusion rod 242 radially, and the lifting holes 715 are used to movably install the lifting rod 241 axially. The protrusion rod 242 can be completely retracted into the protrusion hole 614, and the lifting rod 241 is used to force the protrusion rod 242 to extend out of the protrusion hole 614 when moving axially inward.

[0049] In this embodiment, a one-way valve mechanism 250 is provided between the first mating end 816 and the second mating end 925. The one-way valve mechanism 250 is used to realize one-way grouting of the repair slurry into the repair hole. The one-way valve mechanism 250 includes a valve core mounting groove 458 formed at the first mating end 816 and a valve core 351 provided at the valve core mounting groove 458. The valve core 351 includes a sealing part 1055, a retaining ring part 1056 and a guide part 1057 connected in sequence. The guide part 1057 is used to form a gap with the first flow channel 413. The valve core spring 352, sleeved on the guide portion 1057, is provided between the bottom wall of the valve core mounting groove 458 and the retaining ring portion 1056; a conical first sealing surface 454 is formed at the sealing portion 1055, and a conical second sealing surface 453 is formed at the corresponding end of the second flow channel 322; the valve core spring 352 is used to provide a clamping force for the first sealing surface 454 and the second sealing surface 453 to fit together when the first mating end 816 and the second mating end 925 are in the assembled state; an intermediate flow channel is provided through the retaining ring portion 1056.

[0050] In this embodiment, the grout outlet end 512 of the mounting body 110 is provided with a grouting nozzle 211, and a double-helix turbulent channel is formed inside the grouting nozzle 211. The grout inlet end 323 of the connector body 120 is provided with a quick-connect interface 321.

[0051] In this embodiment, a grouting pipe assembly for repairing cracks in concrete walls is used. The mounting body 110 is installed inside the repair hole and seals against the inner wall of the hole. The connecting body 120 enables one-way grouting of the repair grout into the repair hole via the mounting body 110. In this embodiment, the construction worker can first observe the specific location and size of the crack in the concrete wall to determine the required grouting location, mark this location, and then use drilling tools such as an electric drill or oil drill to drill the repair hole at the marked location. Next, the lifting rod 241 and the extension rod 242 are respectively installed into the lifting hole 715 and the extension hole 614 inside the mounting body 110. The valve core 351 and valve core spring 352 of the one-way valve mechanism 250 are installed in the valve core mounting groove 458 of the first mating end 816. The guide portion 1057 of the valve core 351 and... The first flow channel 413 in the mounting body 110 is coaxial. One end of the valve core spring 352 is close to the retaining ring 1056, and the other end is close to the valve core mounting groove 458. After installation, align the mounting body 110 with the center of the repair hole. The first mating end 816 is located on the outside. Use a regular hexagonal wrench to align with the wrench groove 718 at the end of the first mating end 816. After pressing the valve core 351 and the valve core spring 352, screw them into the mounting body 110 until they are in the appropriate position. Tighten the sealing ring 230 in the sealing mechanism 130 with the first pressing surface 431 on the connecting body 120. With the sealing ring 230 and the connector 120 coaxial, align the connector 120 with the center of the repair hole. The second mating end 925 is located on the inner side. Use a regular hexagonal sleeve to connect with the regular hexagonal wrench part 924 on the connector 120. Rotate the sleeve to make the first thread 817 on the first mating surface engage with the second thread 926 on the second mating surface, thereby continuously reducing the distance between the first pressing surface 431 and the second pressing surface 432. The second pressing surface 432 pushes the lifting rod 241 to move away from the first mating surface through the lifting hole 715. The lifting rod 241 pushes the extension rod 242 to move away from the center of the mounting body 110 through the extension hole 614. The extension rod 242 is pressed against the inner wall of the repair hole. When the repair hole is relatively soft, the extension rod 242 can enter the inner wall of the repair hole. At this time, the first sealing surface 454 on the sealing part 1055 of the valve core 351 of the one-way valve mechanism 250 is close to the second sealing surface 453 on the second flow channel 322 on the connector 120 and is subjected to the extrusion force given by the valve core spring 352. At this time, the main body of the component 100 has been completely installed inside the repair hole.

[0052] In this embodiment, when performing the grouting operation, the grouting system is connected to the quick-connect interface 321 of the grout inlet end 323 of the connector 120 to perform the grouting operation. After the grouting is completed, the grouting system is removed through the quick-connect interface 321. A regular hexagonal sleeve is connected to the regular hexagonal wrench part 924 on the connector 120. The connector 120 is removed by rotating the sleeve. The connector 120 can be recycled. The above operation is repeated.

[0053] When this grouting pipe assembly performs grouting operation, the repair grout flows out from the grouting system, enters the second flow channel 322 after passing through the quick-connect interface 321 of the grout inlet end 323 of the connector 120, and is then subjected to the pressure of the repair grout itself on the sealing part 1055 of the valve core 351, forcing a gap to be created between the first sealing surface 454 and the second sealing surface 453, allowing the repair grout to flow into the first flow channel 413 through the gap, and finally performs unidirectional grouting into the repair hole through the grout outlet end 512 of the mounting body 110. The maximum diameter of the sealing part 1055 of the valve core 351 is larger than the diameter of the second flow channel 322, so the liquid in the repair hole cannot flow from the first flow channel 413 to the second flow channel 322.

[0054] In this embodiment, the cooperation between the mounting body 110 and the connector 120 not only realizes the grouting system to inject grout into the repair hole in one direction, but also realizes the recyclable design of the connector 120. The mounting body 110 and the connector 120 can be connected only when grouting is required. After the grouting operation is completed, the connector 120 can be taken out for repeated use, saving usage costs.

[0055] The mounting body 110 has a cylindrical shape at one end and a conical boss shape at the other end. The outer surface of the mounting body 110 is provided with external threads, which can better enable the mounting body 110 to enter the inner wall of the repair hole and seal with the inner wall of the repair hole.

[0056] The second flow channel 322 has the same diameter as the first flow channel 413. By setting the first flow channel 413 and the second flow channel 322, the repair grout can be better introduced into the first flow channel 413 through the second flow channel 322 to form a grouting channel. The inner diameter of the first flow channel 413 is slightly larger than the outer diameter of the guide part 1057 of the valve core 351. The first flow channel 413 is provided with a valve core spring 352 mounting groove. The inner diameter of the second flow channel 322 is smaller than the maximum outer diameter of the sealing part 1055 of the valve core 351.

[0057] The first mating end 816 is a cylindrical boss with a first thread 817 on its outer wall. The first thread 817 is an external thread, and its inner wall is a regular hexagonal groove for installing a regular hexagonal wrench. The second mating end 925 is also a cylindrical boss with a rough cylindrical outer wall and a second thread 926 on its inner wall. The second thread 926 is an internal thread, and the first thread 817 and the second thread 926 are threads with the same pitch and tooth profile.

[0058] The first extrusion surface 431 is the unshrinked portion of the mounting body 110 at the first mating end 816, and the second extrusion surface 432 is the unshrinked portion at the second mating end 925. The sealing ring 230 is made of rubber or a soft polymer, which has the characteristics of being waterproof, moisture-proof, and airtight. It can effectively prevent the repair slurry from overflowing between the mounting body 110 and the connecting body 120. The inner diameter of the sealing ring 230 is slightly smaller than the outer diameter of the second extrusion surface 432. The surface area of ​​the sealing ring 230 increases when the first thread 817 and the second thread 926 are engaged. The sealing ring 230 is used to achieve the seal between the first mating end 816 and the second mating end 925, as well as the seal between the component body 100 and the repair hole.

[0059] Among them, the top of the lifting rod 241 is wedge-shaped, one end of the extension rod 242 is hemispherical and the other end is wedge-shaped. The lifting rod 241 is circumferentially distributed on the plate for fixing. The wedge surface of the lifting rod 241 is slidably connected to the hemispherical surface of the extension rod 242. The lifting rod 241 can better realize the radial movement of the extension rod 242 along the extension hole 614 to the mounting body 110 by moving the lifting rod 241 axially along the lifting hole 715.

[0060] Among them, quick-connect interface 321 is a pipeline quick-connect interface 321, used to connect and disconnect the connector 120 and the repair slurry pipe.

[0061] Example 2

[0062] This embodiment includes a grouting system composed of any of the grouting pipe assemblies described in Embodiment 1.

[0063] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0064] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A grouting pipe assembly for repairing cracks in concrete walls, characterized in that: The component includes a main body (100), which includes a detachable mounting body (110) and a connector (120); the mounting body (110) is used to be installed inside the repair hole and to be sealed with the inner wall of the repair hole, and the connector (120) is used to realize the one-way injection of repair grout into the repair hole through the mounting body (110); One end of the mounting body (110) is cylindrical and the other end is a conical boss. The outer surface of the mounting body (110) is provided with an external thread for the mounting body (110) to enter the inner wall of the repair hole and to seal with the inner wall of the repair hole. The mounting body (110) includes a mounting body body (210), a first flow channel (413) is provided through the interior of the mounting body body (210), a slurry outlet end (512) is formed at one end of the mounting body body (210), and the other end of the mounting body body (210) shrinks inward to form a first mating end (816). The connector (120) includes a connector body (220), a second flow channel (322) is provided through the interior of the connector body (220), one end of the connector body (220) forms a slurry inlet end (323), and the other end of the connector body (220) shrinks inward to form a second mating end (925). The outer wall of the first mating end (816) is provided with a first thread (817), and the inner wall of the second mating end (925) is provided with a second thread (926). The second thread (926) and the first thread (817) are used to cooperate to realize the detachable connection between the first mating end (816) and the second mating end (925). The end of the first mating end (816) is provided with a wrench groove (718) with a cross-section of regular hexagon. The wrench groove (718) can be mated with a regular hexagonal wrench to screw the mounting body (110) into the repair hole. A sealing mechanism (130) is provided between the first mating end (816) and the second mating end (925), the sealing mechanism (130) being used to achieve a sealing fit between the mounting body and the inner wall of the repair hole; The sealing mechanism (130) includes a first extrusion surface (431) formed at the first mating end (816), a second extrusion surface (432) formed at the second mating end (925), and a sealing ring (230) disposed between the first extrusion surface (431) and the second extrusion surface (432). The sealing ring (230) is used to be fitted onto the second mating end (925). The first extrusion surface (431) and the second extrusion surface (432) are configured such that when the first mating end (816) and the second mating end (925) are in the assembled state, the sealing ring (230) forms an axial pressure on the sealing ring (230). The sealing ring (230) is used to deform outward when subjected to axial pressure. The first extrusion surface (431) is provided with a plurality of lifting holes (715) spaced apart in the circumferential direction, and the lifting holes (715) extend in the axial direction; the side wall of the mounting body (210) is provided with a plurality of protruding holes (614) corresponding to the plurality of lifting holes (715), the protruding holes (614) extend in the radial direction, and the corresponding lifting holes (715) and protruding holes (614) are connected; The extension hole (614) is used to movably provide the extension rod (242) in the radial direction, and the lifting hole (715) is used to movably provide the lifting rod (241) in the axial direction; the extension rod (242) can be fully retracted into the extension hole (614), and the lifting rod (241) is used to force the extension rod (242) to extend out of the extension hole (614) when moving inward in the axial direction. A one-way valve mechanism (250) is provided between the first mating end (816) and the second mating end (925). The one-way valve mechanism (250) is used to realize the one-way injection of repair slurry into the repair hole. The outer wall of the grout inlet end (323) is constructed into a wrench part (924) with a cross-section of regular hexagon. The wrench part (924) is connected to the regular hexagonal sleeve. Rotating the regular hexagonal sleeve makes the distance between the first extrusion surface (431) and the second extrusion surface (432) continuously decrease.

2. A grouting pipe assembly for repairing cracks in concrete walls according to claim 1, characterized in that: The inlet end (323) is used to receive the repair grout, the first flow channel (413) and the second flow channel (322) are used to form a grouting channel when the mounting body (210) and the connecting body (220) are in a connected state, and the outlet end (512) is used to deliver the repair grout into the repair hole.

3. A grouting pipe assembly for repairing cracks in concrete walls according to claim 1, characterized in that: The contracted area at the other end of the mounting body (210) forms a first extrusion surface (431), and the contracted area at the other end of the connecting body (220) forms a second extrusion surface (432). The outer diameter of the first extrusion surface (431) is not greater than the outer diameter of the mounting body (210), and the outer diameters of the second extrusion surface (432) and the sealing ring (230) are not greater than the outer diameter of the first extrusion surface (431); The length of the first mating end (816) is L1, the length of the second mating end (925) is L2, the maximum mating length of the first thread (817) and the second thread (926) is L3, the length of the sealing ring (230) is L, and L1+L2-L3<L<L1+L2.

4. A grouting pipe assembly for repairing cracks in concrete walls according to claim 2, characterized in that: The one-way valve mechanism (250) includes a valve core mounting groove (458) formed at the first mating end (816) and a valve core (351) provided at the valve core (351) mounting groove. The valve core (351) includes a sealing part (1055), a retaining ring part (1056), and a guide part (1057) connected in sequence. The guide part (1057) is used to form a clearance fit with the first flow channel (413). A sleeved guide part is provided between the bottom wall of the valve core mounting groove (458) and the retaining ring part (1056). A valve core spring (352) is provided at part (1057); a first sealing surface (454) with a conical shape is formed at the sealing part (1055), and a second sealing surface (453) with a conical shape is formed at the corresponding end of the second flow channel (322); the valve core spring (352) is used to provide a clamping force for the first sealing surface (454) and the second sealing surface (453) to fit together when the first mating end (816) and the second mating end (925) are in the assembled state; a middle flow channel is provided through part (1056).

5. A grouting pipe assembly for repairing cracks in concrete walls according to claim 1, characterized in that: The grout outlet end (512) of the installation body is provided with a grouting nozzle (211), and a double spiral turbulent channel is formed inside the grouting nozzle (211).

6. A grouting pipe assembly for repairing cracks in concrete walls according to claim 1, characterized in that: The slurry inlet end (323) of the connector is provided with a quick-connect interface (321).

7. A grouting system for repairing cracks in concrete walls, characterized in that: Includes the grouting pipe assembly as described in any one of claims 1-6.

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