Plugging structure and plugging method for drainage hole of basement bottom plate

Abstract

The invention relates to the technical field of drainage hole plugging, in particular to a plugging structure and a plugging method for a drainage hole of a basement bottom plate, the plugging structure comprises an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve are oppositely arranged, and the upper sleeve and the lower sleeve are connected in an inserted mode; a rubber sleeve is arranged between the upper sleeve and the lower sleeve, the upper sleeve and the lower sleeve are jointly provided with a grouting steel pipe and a ventilation steel pipe in a penetrating mode, a three-way valve is arranged at the top end of the grouting steel pipe, and a one-way valve is arranged between the three-way valve and the grouting steel pipe in a communicating mode; the upper sleeve and the lower sleeve are jointly provided with an expanding mechanism used for expanding the rubber sleeve. The method has the effects of simplifying the plugging construction steps of the drainage hole of the basement bottom plate and improving the plugging efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of drainage hole plugging, and in particular to a plugging structure and a plugging method for drainage holes in basement floors. Background Art

[0002] With the rapid development of my country's construction industry, the number of basements and other underground buildings in high-rise buildings has increased, and the depth of underground buildings has become deeper and deeper. Therefore, the impact of high water levels on the safety of underground structures has received more and more attention.

[0003] The invention patent with publication number CN113982007A discloses a closed structure with a drainage well reserved in the post-cast zone of the basement floor. The water pump is placed in the drainage well, and the upper end of the drainage well is closed by a steel plate covered. In step three, the steel plate is closed with a 20mm thick steel plate 9. The size of the steel plate 9 exceeds the edge of the drainage well by 500mm. A galvanized steel pipe 8 with a diameter of 50mm passes through the center of the steel plate 9, and the periphery is fully welded. The upper and lower ends of the galvanized steel pipe 8 are respectively provided with inner threads, wherein the lower end of the galvanized steel pipe 8 is connected to the water pump 1 through the water pipe 2 in the well for pumping water, and the upper end is used to connect the water pipe 7 outside the well or to plug the galvanized steel pipe 8 with a detachable plug 10. The height of the upper end of the galvanized steel pipe 8 extending out of the steel plate 9 is not more than 2 / 3 of the thickness of the bottom plate 3, and the length of the thread head extending out of the lower end is sufficient. At the same time, a cable hole 92 with a diameter just enough to accommodate the water pump wire is opened on the steel plate 9 for powering the water pump. Before the steel plate 9 is closed, the lower end of the galvanized steel pipe 8 is connected to the water pipe 2 in the well, and the cable hole 92 is closed after the cable is passed through. The upper end of the galvanized steel pipe 8 is then connected to the water pipe 7 outside the well to continue pumping water.

[0004] However, since groundwater will continuously gush out of the reserved drainage well, the edge of the drainage well is in a water-rich and humid environment. When the edge of the drainage well is sealed with a steel plate by welding, moisture easily enters the welding molten pool, forming defects such as hydrogen pores, which affect the sealing effect of the steel plate. For this reason, repeated repair welding is necessary, which not only makes the construction steps cumbersome, but also has low construction efficiency. Summary of the invention

[0005] In order to simplify the construction steps of sealing the drainage holes in the basement floor and improve the sealing efficiency, the present application provides a sealing structure and a sealing method for the drainage holes in the basement floor.

[0006] In the first aspect, the present application provides a plugging structure for a drain hole in a basement floor, which adopts the following technical solution: A sealing structure for a drainage hole in a basement floor comprises an upper sleeve and a lower sleeve, wherein the upper sleeve is arranged opposite to the lower sleeve and plugged into the lower sleeve, a rubber sleeve is arranged between the upper sleeve and the lower sleeve, a grouting steel pipe and a ventilation steel pipe are penetrated through the upper sleeve and the lower sleeve, a three-way valve is arranged at the top end of the grouting steel pipe, a one-way valve is arranged between the three-way valve and the grouting steel pipe, and an expansion mechanism for expanding the rubber sleeve is arranged between the upper sleeve and the lower sleeve.

[0007] By adopting the above technical scheme, when it is necessary to assemble the blocking structure, the rubber sleeve is first placed between the upper sleeve and the lower sleeve, and then the upper sleeve and the lower sleeve are plugged into each other, and then the grouting steel pipe and the ventilation steel pipe are respectively inserted through the upper sleeve and the lower sleeve to complete the assembly of the blocking structure. When it is necessary to block the drain hole, the one-way valve and the three-way valve are first connected to the grouting steel pipe in turn, and then the blocking structure is plugged into the drain hole, and then the rubber sleeve is expanded by the expansion mechanism. At this time, the side wall of the rubber sleeve is pressed against the inner wall of the drain hole, so that the drain hole is initially blocked, and then cement slurry and water glass mixture are simultaneously injected into the grouting steel pipe through the three-way valve. After the cement slurry is completely solidified, the blocking of the drain hole is completed. The drain hole is initially blocked by the blocking structure, which is conducive to simplifying the blocking construction steps of the drain hole on the basement floor and improving the blocking efficiency.

[0008] Optionally, the expansion mechanism includes an arc expansion plate, the side wall ring of the lower sleeve is provided with a sliding seat, an expansion rod is slidably passed through the sliding seat, one end of the expansion rod extends into the lower sleeve, and the other end of the expansion rod is connected to the arc expansion plate, the upper sleeve includes a frustum portion, one end of the expansion rod cooperates with the side wall of the frustum portion, the sliding seat is provided with an auxiliary part for cooperating to drive the expansion rod to move, and the grouting steel pipe and the ventilation steel pipe are jointly provided with a locking assembly for locking the upper sleeve and the lower sleeve.

[0009] By adopting the above technical solution, when the rubber sleeve needs to be expanded, the upper sleeve first drives the cone portion to move toward the direction close to the lower sleeve, the cone portion drives the expansion rod to move toward the direction close to the rubber sleeve, the expansion rod drives the arc expansion plate to move toward the direction close to the rubber sleeve, and finally the upper sleeve and the lower sleeve are locked by the locking assembly. At this time, the arc expansion plate squeezes the inner wall of the rubber sleeve, the rubber sleeve is deformed, and presses against the inner wall of the drain hole, which is beneficial to improve the deformation and expansion of the rubber sleeve and the stability of sealing the drain hole.

[0010] Optionally, the locking assembly includes an upper nut group and a lower nut group, the upper nut group is threadedly connected to the top ends of the grouting steel pipe and the ventilation steel pipe, respectively, and the lower nut group is threadedly connected to the bottom ends of the grouting steel pipe and the ventilation steel pipe, respectively.

[0011] By adopting the above technical solution, the upper sleeve and the lower sleeve are locked and limited by the upper nut group and the lower nut. When the upper nut group is rotated downward, the upper nut group drives the upper sleeve to move in the direction close to the lower sleeve until the rubber sleeve is pressed against the wall of the drain hole, which is beneficial to improve the stability of the locking and limiting of the upper sleeve and the lower sleeve.

[0012] Optionally, the auxiliary component is a first spring, which is sleeved on the expansion rod, one end of the first spring is fixedly connected to the side wall of the expansion rod, and the other end of the first spring is fixedly connected to the inner wall of the lower sleeve.

[0013] By adopting the above technical solution, when the expansion rod moves toward the direction approaching the rubber sleeve, the expansion rod squeezes the first spring and the first spring elastically deforms. When the frustum part breaks away from the squeezing of the expansion rod, the first spring releases the elastic force and drives the expansion rod to reset and move, thereby ensuring that the expansion rod is always in contact with the side wall of the frustum part, and at this time the arc expansion plate releases its contact with the rubber sleeve, which is beneficial to improve the stability of the squeezing movement or reset of the expansion rod.

[0014] Optionally, the rubber sleeve includes a stretching part and a sealing part, the stretching part is respectively arranged at the top and bottom ends of the sealing part, a clamping strip is arranged at the end of the stretching part away from the sealing part, and clamping grooves are respectively opened on opposite sides of the upper sleeve and the lower sleeve, and the clamping strip is clamped in the clamping groove.

[0015] By adopting the above technical solution, when the rubber sleeve needs to be installed between the upper sleeve and the lower sleeve, the clamping strips on the stretching part are respectively clamped into the clamping grooves. The clamping of the clamping strips improves the convenience of installation and sealing of the rubber sleeve. When the arc expansion plate expands outward, the arc expansion plate presses against the inner wall of the sealing part, driving the sealing part to expand outward. At this time, the stretching part is elastically deformed. Under the deformation action of the stretching part, it is beneficial to reduce the pulling at the connection with the upper sleeve and the lower sleeve, so as to avoid the connection being detached due to excessive pulling force, thereby affecting the sealing.

[0016] Optionally, a support rod is provided through the upper sleeve, and a strip hole is provided through the side wall of the support rod. The expansion rod is slidably connected to the strip hole, and two connecting rods are hingedly provided on the side wall of the support rod, one end of one of the connecting rods is hinged to the inner upper part of the arc expansion plate, and one end of the other connecting rod is hinged to the inner lower part of the arc expansion plate, and the upper sleeve is provided with a fixing component for fixing the support rod.

[0017] By adopting the above technical solution, when the arc expansion plate moves toward the direction close to the rubber sleeve, the arc expansion plate drives the support rod to move downward through the connecting rod. When the position of the support rod is fixed by the fixing assembly, the upper and lower parts of the arc expansion plate are supported respectively by the connecting rod, ensuring that the arc expansion plate is always pressed against the rubber sleeve as a whole, thereby improving the sealing performance of the rubber sleeve when it is pressed against the inner wall of the drain hole.

[0018] Optionally, the fixing assembly includes an insertion rod, a fixing seat is provided on the top surface of the upper sleeve, the insertion rod slides through the fixing seat, a plurality of holes are provided through one side of the support rod, one end of the insertion rod is respectively plugged into the plurality of holes, a second spring is sleeved on the side wall of the insertion rod, one end of the second spring is fixedly connected to the side wall of the insertion rod, and the other end of the second spring is fixedly connected to the side wall of the fixing seat.

[0019] By adopting the above technical solution, when the insertion rod is driven to move in a direction away from the support rod, the insertion rod squeezes the second spring. When the insertion rod is released, the second spring releases the elastic force and drives the insertion rod to move in a direction close to the support rod. At this time, the insertion rod is inserted into one of the sockets, and the support rod is fixed at the current height, which is beneficial to improve the stability of the support rod locking.

[0020] Optionally, left and right support frames are provided at one end of the expansion rod close to the arc expansion plate, and the left and right support frames are respectively fixedly connected to the left and right inner sides of the arc expansion plate.

[0021] By adopting the above technical solution, the left and right sides of the arc expansion plate are supported by left and right brackets, which is helpful to avoid the rubber sleeve causing deformation of the arc expansion plate under opposite forces, affecting the sealing of the rubber sleeve when it is pressed against the inner wall of the drain hole.

[0022] Optionally, a telescopic arc frame is provided on the opposite side of the adjacent left and right support frames, a support rod is provided on the outer side of the telescopic arc frame, an auxiliary plate is provided on the end of the support rod facing away from the telescopic arc frame, and the auxiliary plate is inserted into the gap between the adjacent arc expansion plates.

[0023] By adopting the above technical solution, when the left and right supports move toward the direction close to the rubber sleeve, the adjacent left and right supports stretch the telescopic arc frame and drive the telescopic arc frame to move toward the direction close to the rubber sleeve. The telescopic arc frame drives the auxiliary plate to move toward the direction close to the rubber sleeve through the support rod. At this time, the auxiliary plate presses the rubber sleeve in the gap between the adjacent arc expansion plates, which is beneficial to further improve the sealing performance of the rubber sleeve when it presses against the inner wall of the drain hole.

[0024] In a second aspect, the present application also provides a method for blocking a drainage hole in a basement floor, which comprises the following steps: During the preparation stage, clean the debris and water in the drain hole to ensure that the hole is clean and unobstructed; Preparation of grouting materials: prepare appropriate amount of cement slurry and water glass mixture according to project requirements to ensure that the quality and proportion of grouting materials meet the requirements of the specifications; at the same time, check the performance and status of the double-liquid grouting machine and prepare the connectors and accessories required for grouting; In the first stage of grouting, the plugging structure is assembled and placed in the drainage hole, and the rubber sleeve is expanded by the expansion mechanism, so that the rubber sleeve expands outward and adheres closely to the wall of the drainage hole; In the second stage of grouting, a three-way valve is installed above the grouting steel pipe, and cement slurry is injected through a valve port of the three-way valve until cement slurry emerges from the ventilation steel pipe, and the ventilation steel pipe is closed after the cement slurry emerges; In the third stage of grouting, cement slurry and water glass are injected from the two valve ports of the three-way valve respectively and continued for a period of time to complete the grouting; In the fourth stage of grouting, after the grouting is completed, the three-way valve is removed, the grouting steel pipe is closed, and the grouting material is allowed to stand and cure in the hole for a period of time to ensure that it is completely solidified and the drainage hole is sealed.

[0025] By adopting the above technical solution, the rubber sleeve expands outward and fits tightly against the wall of the drain hole, so that the sealing structure can be quickly and firmly fixed in the drain hole without the need for additional fixing devices. The sealing structure realizes the functions of rapid installation, high-pressure grouting, effective exhaust and tight sealing through integrated design, which significantly improves the sealing effect and construction efficiency.

[0026] In summary, this application includes the following beneficial technical effects: When it is necessary to assemble the blocking structure, first place the rubber sleeve between the upper sleeve and the lower sleeve, then plug the upper sleeve and the lower sleeve into each other, and then respectively insert the grouting steel pipe and the ventilation steel pipe into the upper sleeve and the lower sleeve to complete the assembly of the blocking structure. When it is necessary to block the drain hole, first connect the one-way valve and the three-way valve to the grouting steel pipe in turn, and then plug the blocking structure into the drain hole, and then expand the rubber sleeve through the expansion mechanism. At this time, the side wall of the rubber sleeve is pressed against the inner wall of the drain hole, thereby initially blocking the drain hole, and then inject cement slurry and water glass mixture into the grouting steel pipe at the same time through the three-way valve. After the cement slurry is completely solidified, the blocking of the drain hole is completed. The drain hole is initially blocked by the blocking structure, which is conducive to simplifying the blocking construction steps of the basement floor drain hole and improving the blocking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the sealing structure for the drainage hole of the basement floor of the present application; Figure 2 is a cross-sectional view of a plugging structure for a drainage hole in a basement floor according to the present application; Figure 3It is a schematic diagram of the structure of the expansion mechanism of the present application; Figure 4 It is a schematic diagram of the structure of the rubber sleeve of the present application.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. upper sleeve; 2. lower sleeve; 3. rubber sleeve; 4. grouting steel pipe; 5. ventilation steel pipe; 6. one-way valve; 7. three-way valve; 8. arc expansion plate; 9. sliding seat; 10. expansion rod; 11. frustum portion; 12. first spring; 13. upper nut group; 14. lower nut group; 15. stretching portion; 16. sealing portion; 17. clamping strip; 18. clamping groove; 19. support rod; 20. strip hole; 21. connecting rod; 22. insertion rod; 23. fixed seat; 24. insertion hole; 25. second spring; 26. left and right support frames; 27. telescopic arc frame; 28. push rod; 29. ​​auxiliary plate. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] See also Figure 1 and Figure 2 A sealing structure for a drainage hole in a basement floor comprises an upper sleeve 1 and a lower sleeve 2, wherein the upper sleeve 1 and the lower sleeve 2 are arranged opposite to each other and are plugged into each other. A rubber sleeve 3 is installed between the upper sleeve 1 and the lower sleeve 2, and the rubber sleeve 3 is simultaneously sleeved on the upper sleeve 1 and the lower sleeve 2. A grouting steel pipe 4 and a ventilation steel pipe 5 are installed through the upper sleeve 1 and the lower sleeve 2. The grouting steel pipe 4 is used to inject cement slurry and water glass into the drainage hole, and the ventilation steel pipe 5 is used to discharge the gas from the inner wall of the drainage hole. A one-way valve 6 is fixedly connected to the top of the grouting steel pipe 4, and a three-way valve 7 is fixedly connected to the top of the one-way valve 6. An expansion mechanism is installed between the upper sleeve 1 and the lower sleeve 2, and the expansion mechanism is used to expand and stretch the rubber sleeve 3.

[0031] The plugging structure is used to plug the drain hole. When the plugging structure needs to be assembled, the rubber sleeve 3 is first placed between the upper sleeve 1 and the lower sleeve 2, and then the upper sleeve 1 is inserted into the lower sleeve 2. Then, the grouting steel pipe 4 and the ventilation steel pipe 5 are respectively inserted into the upper sleeve 1 and the lower sleeve 2 to complete the assembly of the plugging structure.

[0032] When the plugging structure is needed to plug the drain hole for the first time, the one-way valve 6 and the three-way valve 7 are first fixed and connected to the top of the grouting steel pipe 4, and then the plugging structure is inserted into the drain hole, and then the rubber sleeve 3 is expanded by the expansion mechanism, and the rubber sleeve 3 is tightly attached to the inner wall of the drain hole. Under the action of the rubber sleeve 3, the first plugging of the drain hole is completed.

[0033] For details, see Figure 2 and Figure 3The expansion mechanism includes an arc expansion plate 8. In this embodiment, there are four arc expansion plates 8, which are arranged to form a circular shape, and the circle is concentric with the rubber sleeve 3. A sliding seat 9 is provided on the side wall fixing ring of the lower sleeve 2, and an expansion rod 10 is slidably penetrated in the sliding seat 9. The position and number of the expansion rod 10 correspond to the arc expansion plate 8, and one end of the expansion rod 10 extends into the lower sleeve 2 and is a wedge-shaped end. The other end of the expansion rod 10 is connected to the arc expansion plate 8. The upper sleeve 1 includes a frustum portion 11, which is plugged into the lower sleeve 2, and the wedge-shaped end of the expansion rod 10 is matched with the side wall of the frustum portion 11.

[0034] See also Figure 2 and Figure 3 In order to facilitate the movement of the expansion rod 10, the slide seat 9 is installed with an auxiliary part, which is a first spring 12. The first spring 12 is sleeved on the expansion rod 10, and one end of the first spring 12 is fixedly connected to the side wall of the expansion rod 10, and the other end of the first spring 12 is fixedly connected to the inner wall of the lower sleeve 2.

[0035] In addition, in order to facilitate the upper sleeve 1 and the lower sleeve 2 to move toward each other, the grouting steel pipe 4 and the ventilation steel pipe 5 are jointly installed with a locking assembly. The locking assembly includes an upper nut group 13 and a lower nut group 14, and the upper nut group 13 and the lower nut group 14 each have two nuts, wherein the upper nut group 13 is threadedly connected to the top of the grouting steel pipe 4 and the ventilation steel pipe 5, respectively, and the lower nut group 14 is threadedly connected to the bottom of the grouting steel pipe 4 and the ventilation steel pipe 5, respectively.

[0036] The lower nut group 14 is used to support and limit the lower sleeve 2. When the upper nut group 13 is rotated downward, the upper nut group 13 drives the upper sleeve 1 to move toward the lower sleeve 2, and the upper sleeve 1 drives the cone part 11 to move toward the lower sleeve 2. The cone part 11 also drives the four expansion rods 10 to move toward the rubber sleeve 3. The four expansion rods 10 respectively drive the corresponding arc expansion plates 8 to move toward the rubber sleeve 3, and the expansion rods 10 squeeze the first spring 12. The four arc expansion plates 8 are unfolded at the same time and expand the inner wall of the rubber sleeve 3, so that the outer wall of the rubber sleeve 3 is closely attached to the hole wall of the drain hole.

[0037] See also Figure 2 and Figure 4 In order to improve the sealing performance of the rubber sleeve 3 at the connection points with the upper sleeve 1 and the lower sleeve 2, and to improve the sealing performance of the rubber sleeve 3 when it is close to the hole wall, the rubber sleeve 3 includes a stretching portion 15 and a sealing portion 16. The deformation ability of the stretching portion 15 is much stronger than that of the sealing portion 16, and the stretching portion 15 is fixedly connected to the top surface and the bottom surface of the sealing portion 16. The end of the stretching portion 15 away from the sealing portion 16 is fixedly connected with a clamping strip 17, and the cross section of the clamping strip 17 is T-shaped. The upper sleeve 1 and the lower sleeve 2 are respectively provided with a clamping groove 18 on the opposite side, and the clamping strip 17 is clamped with the clamping groove 18.

[0038] When the rubber sleeve 3 needs to be installed, the rubber sleeve 3 is first placed between the upper sleeve 1 and the lower sleeve 2, and then the clamping strip 17 is clamped in the clamping groove 18. Under the action of the clamping strip 17, not only the stability of the connection between the rubber sleeve 3 and the upper sleeve 1 and the lower sleeve 2 is improved, but also the sealing of the connection between the rubber sleeve 3 and the upper sleeve 1 and the lower sleeve 2 is improved.

[0039] In addition, when the arc expansion plate 8 expands outward, the arc expansion plate 8 drives the sealing part 16 to expand and adhere to the hole wall. Since the deformation ability of the stretching part 15 is stronger than that of the sealing part 16, the deformation reaction force at the connection between the stretching part 15 and the upper sleeve 1 and the lower sleeve 2 is small, thereby enhancing the connection strength.

[0040] When the sealing portion 16 is deformed and expanded, the arc expansion plate 8 is easily deformed in the vertical direction, resulting in a reduction in the contact area between the sealing portion 16 and the hole wall. Figure 2 and Figure 3 A support rod 19 is installed in the upper sleeve 1, and the number and position of the support rod 19 correspond to the arc expansion plate 8. A strip hole 20 is penetrated through the side wall of the support rod 19, and the expansion rod 10 passes through the strip hole 20 and is slidably connected with the strip hole 20. A connecting rod 21 is hinged on the side wall of the support rod 19, and the number of connecting rods 21 is provided with two, one end of which is hinged to the inner upper part of the arc expansion plate 8, and the other end of the other connecting rod 21 is hinged to the inner lower part of the arc expansion plate 8.

[0041] In order to facilitate the fixing of the support rod 19, the upper sleeve 1 is installed with a fixing assembly, and the fixing assembly includes an insertion rod 22. The top surface of the upper sleeve 1 is fixedly connected with a fixing seat 23, and the insertion rod 22 slides through the fixing seat 23. The side wall of the support rod 19 is penetrated by a plug hole 24, and the number of the plug holes 24 is provided, and the multiple plug holes 24 are evenly distributed along the length direction of the support rod 19. The side wall of the plug rod 22 is sleeved with a second spring 25, one end of the second spring 25 is fixedly connected to the side wall of the plug rod 22, and the other end of the second spring 25 is fixedly connected to the side wall of the fixing seat 23.

[0042] When the support strength of the upper inner part and the lower inner part of the arc expansion plate 8 needs to be strengthened, the insertion rod 22 is pulled away from the support rod 19, the insertion rod 22 is separated from the insertion hole 24, and the insertion rod 22 squeezes the second spring 25. At this time, the support rod 19 is driven down, and the support rod 19 is pressed against the upper inner part and the lower inner part of the arc expansion plate 8 through the connecting rod 21.

[0043] It should be noted that when the arc expansion plate 8 is expanded, the insertion rod 22 releases the lock on the support rod 19, and when the arc expansion plate 8 is expanded, the arc expansion plate 8 drives the support rod 19 to descend through the connecting rod 21.

[0044] It should be noted that, referring to the figure, one end of the expansion rod 10 close to the arc expansion plate 8 is fixedly connected to the left and right support frames 26, and one end of the left and right support frames 26 is fixedly connected to the inner left part of the arc expansion plate 8, and the other end of the left and right support frames 26 is fixedly connected to the inner right part of the arc expansion plate 8.

[0045] When the expansion rod 10 is driven to move toward the direction close to the rubber sleeve 3, the expansion rod 10 drives the arc expansion plate 8 to move toward the direction close to the rubber sleeve 3 through the left and right supports 26, and under the action of the left and right supports 26, the inner left and right parts of the arc expansion plate 8 are supported to prevent the reaction force of the deformation of the rubber sleeve 3 from causing deformation of the arc expansion plate 8.

[0046] See also Figure 3 In order to further improve the sealing performance of the rubber sleeve when it is close to the hole wall, the opposite side of the adjacent left and right support frames 26 is fixedly connected with a telescopic arc frame 27, and a stopper 28 is fixedly installed on the outside of the telescopic arc frame 27. The end of the stopper 28 away from the telescopic arc frame 27 is fixedly connected with an auxiliary plate 29, and the gap between the auxiliary plate 29 and the adjacent arc expansion plate 8 is inserted.

[0047] When the left and right supports 26 move toward the direction close to the rubber sleeve 3, the adjacent left and right supports 26 stretch the telescopic arc frame 27 and drive the telescopic arc frame 27 to move toward the direction close to the rubber sleeve 3. The telescopic arc frame 27 drives the auxiliary plate 29 to move toward the direction close to the rubber sleeve 3 through the support rod 28. At this time, the auxiliary plate 29 presses the rubber sleeve 3 in the gap between the adjacent arc expansion plates 8. The auxiliary plate 29 supplements the tightening of the rubber sleeve 3, and further improves the sealing performance of the rubber sleeve 3 when it is close to the hole wall.

[0048] The present application also provides a method for blocking a drainage hole in a basement floor, which comprises the following steps: S1: In the preparation stage, clean the debris and water in the drain hole to ensure that the hole is clean and unobstructed; S2: Preparation of grouting materials. Prepare an appropriate amount of cement slurry and water glass mixture according to the project requirements to ensure that the quality and proportion of the grouting materials meet the requirements of the specifications. Check the performance and status of the double-liquid grouting machine and prepare the connectors and accessories required for grouting; S3: In the first stage of grouting, the plugging structure is placed in the drainage hole, and then the upper nut group 13 is rotated downward. The upper nut group 13 drives the upper sleeve 1 to move toward the lower sleeve 2, and the upper sleeve 1 drives the cone part 11 to move toward the lower sleeve 2. The cone part 11 also drives the four expansion rods 10 to move toward the rubber sleeve 3. The four expansion rods 10 respectively drive the corresponding arc expansion plates 8 to move toward the rubber sleeve 3, and the expansion rods 10 squeeze the first spring 12. The four arc expansion plates 8 are unfolded at the same time and expand the inner wall of the rubber sleeve 3, so that the outer wall of the rubber sleeve 3 is tightly attached to the hole wall of the drainage hole; When the left and right supports 26 move toward the direction close to the rubber sleeve 3, the adjacent left and right supports 26 drive the telescopic arc frame 27 to move toward the direction close to the rubber sleeve 3 while stretching the telescopic arc frame 27. The telescopic arc frame 27 drives the auxiliary plate 29 to move toward the direction close to the rubber sleeve 3 through the support rod 28. At this time, the auxiliary plate 29 presses the rubber sleeve 3 in the gap between the adjacent arc expansion plates 8. The auxiliary plate 29 supplements the tightening of the rubber sleeve 3, further improving the sealing performance of the rubber sleeve 3 when it is close to the hole wall. The sealing part 16 expands outwards, thereby closely adhering to the hole wall of the drain hole, so that the entire structure is firmly fixed in the drain hole, and at the same time, the grouting liquid can be prevented from leaking out of the gap between the structure and the hole wall during the pouring process; S4: In the second stage of grouting, a three-way valve 7 and a one-way valve 6 are sequentially installed above the grouting steel pipe 4, and cement slurry is injected at an appropriate pressure through one of the valve ports of the three-way valve 7. During the grouting process, the ventilation steel pipe 5 is closely observed. When cement slurry begins to emerge from the ventilation steel pipe 5, it indicates that the drainage hole has been fully filled with cement slurry. At this time, the ventilation steel pipe 5 should be immediately closed to prevent cement slurry from flowing back or leaking; S5: The third stage of grouting, using the continuous high pressure generated by the grouting machine, inject cement slurry and water glass from the two valve ports of the three-way valve 7 respectively, maintain a stable grouting pressure and speed for a period of time, ensure that the grouting material can evenly fill all the pores in the drainage hole, and remove the air and moisture in the hole, so as to achieve a better blocking effect; S6: After the grouting is completed, the three-way valve 7 is removed and the grouting steel pipe 4 is closed. Finally, the grouting material is allowed to stand in the hole for a period of time to ensure that it is completely solidified to achieve the plugging effect.

[0049] In summary, the plugging structure simplifies the construction steps, saves construction time, and reduces the operation difficulty of construction personnel by integrating the grouting steel pipe 4 and the ventilation steel pipe 5. At the same time, the structure can be quickly fixed in the drain hole by tightening the upper nut group 13 without the need for additional fixing devices.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plugging structure for a drain hole in a basement floor, characterized in that: The invention comprises an upper sleeve (1) and a lower sleeve (2), wherein the upper sleeve (1) and the lower sleeve (2) are arranged opposite to each other, the upper sleeve (1) and the lower sleeve (2) are plugged into each other, a rubber sleeve (3) is arranged between the upper sleeve (1) and the lower sleeve (2), a grouting steel pipe (4) and a ventilation steel pipe (5) are penetrated through the upper sleeve (1) and the lower sleeve (2), a three-way valve (7) is arranged at the top end of the grouting steel pipe (4), a one-way valve (6) is arranged between the three-way valve (7) and the grouting steel pipe (4), and the upper sleeve (1) and the lower sleeve (2) are jointly provided with an expansion mechanism for expanding the rubber sleeve (3).

2. A plugging structure for a drain hole in a basement floor according to claim 1, characterized in that: The expansion mechanism includes an arc expansion plate (8), a sliding seat (9) is provided on the side wall of the lower sleeve (2), an expansion rod (10) is slidably passed through the sliding seat (9), one end of the expansion rod (10) extends into the lower sleeve (2), and the other end of the expansion rod (10) is connected to the arc expansion plate (8), the upper sleeve (1) includes a frustum portion (11), one end of the expansion rod (10) cooperates with the side wall of the frustum portion (11), the sliding seat (9) is provided with an auxiliary part for cooperating and driving the expansion rod (10) to move, and the grouting steel pipe (4) and the ventilation steel pipe (5) are jointly provided with a locking assembly for locking the upper sleeve (1) and the lower sleeve (2).

3. A plugging structure for a drain hole in a basement floor according to claim 2, characterized in that: The locking assembly comprises an upper nut group (13) and a lower nut group (14); the upper nut group (13) is threadedly connected to the top ends of the grouting steel pipe (4) and the ventilation steel pipe (5), respectively; and the lower nut group (14) is threadedly connected to the bottom ends of the grouting steel pipe (4) and the ventilation steel pipe (5), respectively.

4. A plugging structure for a drain hole in a basement floor according to claim 2, characterized in that: The auxiliary component is a first spring (12), which is sleeved on the expansion rod (10), one end of the first spring (12) is fixedly connected to the side wall of the expansion rod (10), and the other end of the first spring (12) is fixedly connected to the inner wall of the lower sleeve (2).

5. The plugging structure for a drain hole in a basement floor according to claim 1, characterized in that: The rubber sleeve (3) comprises a stretching portion (15) and a sealing portion (16), wherein the stretching portion (15) is respectively arranged at the top end and the bottom end of the sealing portion (16), and a clamping strip (17) is arranged at one end of the stretching portion (15) away from the sealing portion (16). A clamping groove (18) is respectively provided on the opposite sides of the upper sleeve (1) and the lower sleeve (2), and the clamping strip (17) is clamped with the clamping groove (18).

6. The plugging structure for a drain hole in a basement floor according to claim 2, characterized in that: A support rod (19) is provided through the upper sleeve (1), and a strip hole (20) is provided through the side wall of the support rod (19). The expansion rod (10) is slidably connected to the strip hole (20). Two connecting rods (21) are hingedly provided on the side wall of the support rod (19), one end of which is hinged to the inner upper part of the arc expansion plate (8), and one end of which is hinged to the inner lower part of the arc expansion plate (8). The upper sleeve (1) is provided with a fixing component for fixing the support rod (19).

7. A plugging structure for a drain hole in a basement floor according to claim 6, characterized in that: The fixing assembly comprises an insert rod (22), a fixing seat (23) is arranged on the top surface of the upper sleeve (1), the insert rod (22) slides through the fixing seat (23), a plurality of insertion holes (24) are arranged through one side of the support rod (19), one end of the insert rod (22) is respectively plugged into the plurality of insertion holes (24), a second spring (25) is sleeved on the side wall of the insert rod (22), one end of the second spring (25) is fixedly connected to the side wall of the insert rod (22), and the other end of the second spring (25) is fixedly connected to the side wall of the fixing seat (23).

8. The plugging structure for a drain hole in a basement floor according to claim 2, characterized in that: Left and right support frames (26) are provided at one end of the expansion rod (10) close to the arc expansion plate (8), and the left and right support frames (26) are respectively fixedly connected to the left and right inner sides of the arc expansion plate (8).

9. A plugging structure for a drain hole in a basement floor according to claim 8, characterized in that: A telescopic arc frame (27) is arranged on the opposite side of the adjacent left and right support frames (26), a support rod (28) is arranged on the outer side of the telescopic arc frame (27), an auxiliary plate (29) is arranged at one end of the support rod (28) away from the telescopic arc frame (27), and the auxiliary plate (29) is inserted into the gap between the adjacent arc expansion plate (8).

10. A method for plugging a drainage hole in a basement floor, based on a plugging structure for a drainage hole in a basement floor according to any one of claims 1 to 9, comprising the following steps: During the preparation stage, clean the debris and water in the drain hole to ensure that the hole is clean and unobstructed; Preparation of grouting materials: prepare appropriate amount of cement slurry and water glass mixture according to project requirements to ensure that the quality and proportion of grouting materials meet the requirements of the specifications; at the same time, check the performance and status of the double-liquid grouting machine and prepare the connectors and accessories required for grouting; In the first stage of grouting, the plugging structure is assembled and placed in the drainage hole, and the rubber sleeve (3) is expanded by the expansion mechanism, so that the rubber sleeve (3) expands outward and closely adheres to the hole wall of the drainage hole; In the second stage of grouting, a three-way valve (7) is installed above the grouting steel pipe (4), and cement slurry is injected through a valve port of the three-way valve (7) until cement slurry emerges from the ventilation steel pipe (5), and the ventilation steel pipe (5) is closed after the cement slurry emerges; In the third stage of grouting, cement slurry and water glass are respectively injected from the two valve ports of the three-way valve (7) for a period of time to complete the grouting; In the fourth stage of grouting, after the grouting is completed, the three-way valve (7) is removed, the grouting steel pipe (4) is closed, and the grouting material is left to stand in the hole for a period of time to ensure that it is completely solidified, thereby completing the plugging of the drainage hole.

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