Structure bottom plate descending water well plugging device and construction method

Abstract

The invention provides a structure bottom plate descending water well plugging device and a construction method. The plugging device comprises a pre-buried sleeve, a plugging plate, a first water stop ring and an operation rod, and a preformed hole is formed in an inner bottom plate of the pre-buried sleeve; the plugging plate is fixed in the embedded sleeve by a limiting mechanism and is used for plugging the preformed hole; the first water stop ring is clamped on the periphery of the preformed hole by the inner bottom plate of the embedded sleeve and the plugging plate; the operating rod is detachably arranged on the plugging plate and used for moving the plugging plate to the limiting assembly. Compared with the prior art in which the welding quality is difficult to control, through the synergistic effect of all the structures, the precipitation well can be effectively plugged, the phenomena of water seepage and water leakage in the later plugging period are prevented, and the engineering quality is improved; in addition, the plugging device has low requirements on environmental conditions in use, and can also be used when the underground water level is high or confined water exists in a stratum.

Description

Technical Field

[0001] The invention relates to the technical field of drainage well plugging construction, and in particular to a drainage well plugging device with a structural bottom plate and a construction method. Background Art

[0002] During the construction of the main structure of a building (especially high-rise buildings), it is often necessary to drain groundwater. When the basement area is large and the water level is high, due to precipitation and the need to prevent floating during the main structure construction phase, it is often necessary to set up a drainage well under the basement structure floor. After the concrete is poured on the structure floor, this drainage well still needs to run for a certain period of time before it can be sealed.

[0003] The traditional sealing method involves using steel casing to raise the drainage well below the floor, pre-embedded steel plates in the finished surface of the structural floor, and welding the sealing plates to the pre-embedded steel plates after the drainage stops to achieve the sealing purpose. However, this construction method requires a water-free environment and is not suitable when the groundwater level is high or there is pressurized water in the stratum. Furthermore, due to the uncertainty of welding quality, water seepage often occurs in the drainage wells at a later stage. For buildings, this can at best affect the visual quality of the building and at worst affect its functionality and durability. Summary of the Invention

[0004] The purpose of the present invention is to provide a structural bottom plate downhole well plugging device and a construction method to solve the deficiencies in the above-mentioned background technology.

[0005] The technical solution of the present invention is: a structural bottom plate downhole well plugging device, which comprises:

[0006] A pre-buried sleeve, wherein a reserved hole is opened on the inner bottom plate of the pre-buried sleeve;

[0007] A blocking plate, fixed in the embedded sleeve by a limiting mechanism, for blocking the reserved hole;

[0008] a first water-stop ring, which is clamped by the inner bottom plate of the embedded sleeve and the blocking plate and is positioned on the outer periphery of the reserved hole;

[0009] An operating rod is detachably arranged on the blocking plate and is used to move the blocking plate to the position of the limiting assembly.

[0010] Preferably, the limiting mechanism has several groups distributed circumferentially around the blocking plate, which include a support portion, a first movable rod and a stiffening assembly, the support portion is fixedly arranged on the inner bottom plate of the embedded sleeve; the first movable rod is located between the stiffening assembly and the blocking plate, and is connected to the support portion through a rotating shaft; the first movable rod and the blocking plate are provided with a first arc-shaped convex surface and a first arc-shaped groove on opposite sides, respectively, the axis of the first arc-shaped convex surface is parallel to the rotating shaft, and the stiffening assembly can press the first arc-shaped convex surface tightly against the first arc-shaped groove.

[0011] Preferably, the stiffening assembly includes a limiting portion, a second movable rod and a return spring, the limiting portion is fixedly configured on the inner bottom plate of the embedded sleeve; the return spring is located between the first movable rod and the second movable rod, and is connected to the support rod through the rotating shaft; the second movable rod and the limiting block are respectively provided with a second arc-shaped convex surface and a second arc-shaped groove on the facing sides, the axis of the second arc-shaped convex surface is parallel to the rotating shaft, and it can rotate around the rotating shaft in the second arc-shaped groove.

[0012] Preferably, the second arc-shaped groove is recessed from the bottom to the top of the embedded sleeve, the limiting portion is provided with a horizontal supporting surface located at the bottom end of the second arc-shaped groove, and the second movable rod is located above the horizontal supporting surface.

[0013] Preferably, the reinforcing assembly includes a U-shaped seat, the sealing end of the U-shaped seat is connected to the rotating shaft; a part of the second movable rod and the return spring are slidably arranged on the inner side of the U-shaped seat.

[0014] Preferably, a guide rod is provided on the inner bottom plate of the embedded sleeve, the guide rod and the embedded sleeve extend in the same direction, and a guide hole corresponding to the position of the guide rod is provided on the blocking plate.

[0015] Preferably, the top end of the blocking plate is provided with an internally threaded sleeve, and the end of the operating rod is provided with an external thread adapted thereto.

[0016] Preferably, at least two sets of second water-stop rings are provided on the outer periphery of the embedded sleeve, the first water-stop rings are rubber water-stop rings, and the second water-stop rings are rigid water-stop rings.

[0017] The technical solution of the present invention also includes: a method for constructing a water well plugging device using the above-mentioned structural bottom plate, which comprises the following steps:

[0018] Embed the pre-buried casing into the structural base plate so that the bottom end of the pre-buried casing extends into the precipitation well;

[0019] When the conditions for stopping precipitation are met, stop precipitation and remove the water pump in the precipitation well, connect and tighten the blocking plate and the operating rod, use the operating rod to transport the blocking plate downward to the limit mechanism, so that the limit mechanism fixes the blocking plate to achieve blocking of the reserved hole;

[0020] Separate the operating rod from the blocking plate, leaving the blocking plate in the embedded casing, and pour concrete in the embedded casing.

[0021] The beneficial effect of the present invention is that: the sealing device can realize that when the structural base plate is cast, the base plate of the embedded casing and the structural base plate block most of the openings of the precipitation well, and then use the sealing plate, the first water-stop ring and the concrete cast in the embedded casing to seal the reserved hole to prevent groundwater from seeping into the embedded casing, and at the same time use the second water-stop ring to cut off the water that may exist between the outer wall of the embedded casing and the gap between the structural base plate to prevent groundwater from seeping into the top of the structural base plate. Compared with the existing technology in which the welding quality is difficult to control, the present invention can effectively seal the precipitation well through the synergistic effect of the above-mentioned structures, prevent water seepage and leakage in the later stage of sealing, and improve the quality of the project; and the use of the sealing device has low requirements on environmental conditions, and can also be used when the groundwater level is high or there is pressurized water in the stratum. It is only necessary to pump out the water in the embedded casing before pouring the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall structural diagram of an embodiment of the present invention;

[0023] Figure 2 is a top view of the embedded sleeve in an embodiment of the present invention;

[0024] Figure 3 is a side sectional view of the embedded sleeve in an embodiment of the present invention;

[0025] Figure 4 is a structural diagram of a blocking plate and an operating rod in an embodiment of the present invention;

[0026] Figure 5 Schematic diagram of the connection between the blocking plate and the embedded sleeve in an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Pre-buried casing; 1.1. Reserved hole;

[0029] 2. Sealing plate; 2.1. First arc-shaped groove; 2.2. Guide hole;

[0030] 3. Operating lever;

[0031] 4. The first water stop ring;

[0032] 5. Second water stop ring;

[0033] 6. Limiting mechanism; 6.1. Support portion; 6.2. First movable rod; 6.21. First curved convex surface; 6.3. Rotation axis; 6.4. Limiting portion; 6.41. Second curved groove; 6.42. Horizontal supporting surface; 6.5. Second movable rod; 6.51. Second curved convex surface; 6.6. Return spring; 6.7. U-shaped seat;

[0034] 7. Curved ring;

[0035] 8. Guide rod;

[0036] 9. Internal thread sleeve;

[0037] 10. Precipitation well;

[0038] 11. Structural base plate. DETAILED DESCRIPTION

[0039] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

[0041] Reference Attachment Figure 1-5, an embodiment of the present invention provides a structural bottom plate water well plugging device, which includes: an embedded casing 1, a plugging plate 2, an operating rod 3, a first water stop ring 4 and a limiting mechanism 6. The embedded casing 1 has an inner bottom plate, and a reserved hole 1.1 is opened on the inner bottom plate for removing equipment such as a water pump from the water well 10; the limiting mechanism 6 and the plugging plate 2 are located in the embedded casing 1, and the plugging plate 2 is used to plug the reserved hole 1.1 after removing equipment such as the water pump, and the limiting mechanism 6 is used to fix the plugging plate 2 at The embedded sleeve 1 is inserted into the pre-embedded sleeve 1 to achieve effective sealing of the reserved hole 1.1; the operating rod 3 is detachably connected to the sealing plate 2, so that when a person holds the top end thereof, the sealing plate 2 at the bottom end thereof can be gradually moved downward from the top of the embedded sleeve to the limiting mechanism 6; the first water-stop ring 4 is located on the inner bottom plate of the embedded sleeve 1. When the sealing plate 2 is fixed in the embedded sleeve 1 by the limiting mechanism 6, the first water-stop ring 4 is clamped by the inner bottom plate of the embedded sleeve 1 and the sealing plate 2 on the outer periphery of the reserved hole 1.1.

[0042] During construction, the embedded sleeve 1 is embedded in the structural base plate 11, and the bottom end of the embedded sleeve 1 is extended into the precipitation well 10, that is, the outer diameter of the embedded sleeve 1 should be smaller than the inner diameter of the precipitation well 10; when the precipitation well needs to be sealed, the sealing plate 2 and the operating rod 3 are connected and tightened, and the operating rod 3 is used to transport the sealing plate 2 downward to the limiting mechanism 6 in the embedded sleeve 1, so that the limiting mechanism 6 fixes the sealing plate 2 to achieve the sealing of the reserved hole 1.1, and then the operating rod 3 is separated from the sealing plate 2, so that the sealing plate 2 remains in the embedded sleeve 1, and then concrete is poured in the embedded sleeve 1, and before the construction of the building ground, the part of the cylinder of the embedded sleeve 1 that is higher than the finished surface of the structural base plate 11 is cut off, and the sealing operation of the precipitation well 10 is completed.

[0043] The above-mentioned operation of using the sealing plate 2 to seal the reserved hole 1.1 has no requirements for the environment inside the embedded sleeve 1, that is, the operation can be performed whether there is water or not in the embedded sleeve 1. If there is water in the embedded sleeve 1, then after the sealing plate 2 seals the reserved hole 1.1, the water in the embedded sleeve 1 can be pumped out. The water in the precipitation well 10 will not continue to enter the embedded sleeve 1 due to the obstruction of the first water stop ring 4, and concrete will be poured in the embedded sleeve 1 subsequently, which can ensure the sealing effect of the precipitation well 10.

[0044] In order to avoid water seepage at the connection between the outer wall of the embedded sleeve 1 and the structural base plate 11, this embodiment also provides at least two groups of second water-stop rings 5 ​​on the outer wall of the embedded sleeve 1. In this embodiment: the first water-stop ring 4 is a rubber water-stop ring. During implementation, the first water-stop ring 4 can be connected to the sealing plate 2 by gluing. The first water-stop ring 4 is tightly sealed by the inner base plate of the embedded sleeve 1 and the sealing plate 2 to ensure that groundwater cannot penetrate into other parts of the embedded sleeve 1. The second water-stop ring 5 is a rigid water-stop ring, which is used to cut off the seepage of water in the gap between the outer wall of the embedded sleeve 1 and the structural base plate 11.

[0045] In this embodiment, the limiting mechanism 6 is distributed in several groups around the blocking plate 2, which include a support portion 6.1, a first movable rod 6.2 and a stiffening assembly. The support portion 6.1 is fixedly arranged on the inner bottom plate of the embedded sleeve 1; the first movable rod 6.2 is located between the stiffening assembly and the blocking plate 2, and is connected to the support portion 6.1 through a rotating shaft 6.3; the first movable rod 6.2 and the blocking plate 2 are provided with a first arcuate convex surface 6.21 and a first arcuate groove 2.1 on the facing sides respectively, the axis of the first arcuate convex surface 6.21 is parallel to the rotating shaft 6.3, and the stiffening assembly can press the first arcuate convex surface 6.21 tightly into the first arcuate groove 2.1.

[0046] The first arc-shaped groove 2.1 can be directly opened on the side edge of the blocking plate 2, or can be opened as shown in the attached figure. Figure 4 As shown, a curved ring 7 is constructed above the blocking plate 2, and the outer side surface of the curved ring 7 is a first arc-shaped groove 2.1. The first arc-shaped groove 2.1 is recessed from the outer side surface of the curved ring 7 to the inner side surface. When the curved ring 7 moves from top to bottom along with the blocking plate 2, the outermost edge of the first arc-shaped groove 2.1 presses down the first arc-shaped convex surface 6.21, causing the first movable rod 6.2 to rotate around the rotation axis 6.3, so that the lateral distance between the first arc-shaped convex surface 6.21 and the rotation axis 6.3 becomes smaller. When the lateral distance between the first arc-shaped convex surface 6.21 and the rotation axis 6.3 is equal to the lateral distance between the outer edge of the first arc-shaped groove 2.1 and the rotation axis 6.3 (refer to the attached Figure 5 ), the curved ring 7 will drop slightly with the sealing plate 2, and the first arc-shaped convex surface 6.21 will enter the first arc-shaped groove 2.1, and under the action of the stiffening component, it cannot be separated from the first arc-shaped groove 2.1, thereby fixing the sealing plate 2 and preventing the rubber water-stop ring from moving upward under the action of elasticity.

[0047] To achieve the installation and fixation of the blocking plate 2, the length of the first movable rod 6.2, the height of the support portion 6.1, the curvature of the first arcuate groove 2.1, the height of the first water stop ring 4, the thickness of the blocking plate 2, and other data should be comprehensively considered and designed so that when the first movable rod 6.2 is rotated downward to the point where "the lateral spacing between the first arcuate convex surface 6.21 and the rotation axis 6.3 is equal to the lateral spacing between the outer edge of the first arcuate groove 2.1 (or the outermost edge of the blocking plate 2) and the rotation axis 6.3", the first movable rod 6.2 still does not contact the inner bottom plate of the embedded sleeve. More preferably, when designing the dimensions, it is also considered that after the blocking plate 2 is installed, the axis of the first movable rod 6.2 is horizontal and the top surface of the curved ring 7 is flush with the top surface of the first movable rod 6.2.

[0048] As mentioned above, the stiffening assembly can apply force to the first movable rod 6.2 so that the first arcuate convex surface 6.21 is pressed tightly against the first arcuate groove 2.1. However, considering that the first movable rod 6.2 needs to have the freedom to rotate downward, some feasible technical solutions are configured to include a limit portion 6.4, a second movable rod 6.5 and a return spring 6.6. The limit portion 6.4 is fixedly configured on the inner bottom plate of the embedded sleeve 1; the return spring 6.6 is located between the first movable rod 6.2 and the second movable rod 6.5, and is connected to the support rod through the rotating shaft 6.3; the second movable rod 6.5 and the limit portion 6.4 are respectively provided with a second arcuate convex surface 6.51 and a second arcuate groove 6.41 on the facing sides. The axis of the second arcuate convex surface 6.51 is parallel to the rotating shaft 6.3, and it can rotate around the rotating shaft 6.3 in the second arcuate groove 6.41.

[0049] During implementation, the blocking plate 2 is used to press down the first curved convex surface 6.21, causing the first movable rod 6.2 to rotate, thereby driving the return spring 6.6 and the second movable rod 6.5 to rotate, and during the rotation of the second movable rod 6.5, due to the limitation of the second curved groove 6.41, the lateral distance between the second curved convex surface 6.51 and the rotation axis is reduced, causing the return spring 6.6 to be compressed. After the first curved convex surface 6.21 enters the first curved groove 2.1, there is no need to apply force to the blocking plate 2 and the operating rod 3. Since the extrusion force on the first curved convex surface 6.21 is reduced, under the action of the return spring 6.6, the second movable rod 6.5, the return spring 6.6 and the first movable rod 6.2 rotate in the opposite direction, and the return spring 6.6 applies an extrusion force to the first curved convex surface 6.21 through the first movable rod 6.2, so that it is stably abutted against the first curved groove 2.1, thereby achieving stable installation of the blocking plate 2.

[0050] Due to the structural characteristics of the return spring 6.6 itself, it is easy to bend when rotating with the first movable rod 6.2. Therefore, a U-shaped seat 6.7 is constructed on the clamping assembly of this embodiment. The sealed end of the U-shaped seat 6.7 is connected to the rotating shaft 6.3. A part of the second movable rod 6.5 and the return spring 6.6 are slidably arranged on the inner side of the U-shaped seat 6.7. The inner wall of the U-shaped seat 6.7 is used to limit the return spring 6.6 and the second movable rod 6.5, so that when the first movable rod 6.2 rotates, it directly drives the U-shaped seat 6.7 to rotate, and the return spring 6.6 expands and contracts in the U-shaped seat 6.7, and causes one end of the second movable rod 6.5 to slide in the U-shaped seat 6.7.

[0051] In some preferred implementation cases, the first movable rod 6.2 and the second movable rod 6.5 are coaxial, and the U-shaped seat 6.7 is integrally formed with the first movable rod 6.2.

[0052] In some preferred embodiments, the second arcuate groove 6.41 extends from the bottom to the top of the embedded sleeve 1. The stopper 6.4 is provided with a horizontal support surface 6.42 at the bottom of the second arcuate groove 6.41, and the second movable rod 6.5 is positioned above the horizontal support surface 6.42. When the return spring 6.6 drives the second movable rod 6.5 and the first movable rod 6.2 to reset, the horizontal support surface 6.42 prevents the second movable rod 6.5 from further downward rotation, ultimately maintaining the first movable rod 6.2 and the second movable rod 6.5 in a horizontal position.

[0053] To facilitate rapid installation of the blocking plate 2, this embodiment further includes several guide rods 8 on the inner bottom plate of the embedded sleeve 1. The guide rods 8 extend in the same direction as the embedded sleeve 1, and the blocking plate 2 is provided with guide holes 2.2 corresponding to the positions of the guide rods 8. When the blocking plate 2 is pushed downward by the operating rod 3, the guide rods 8 are inserted into the guide holes 2.2, achieving rapid positioning of the blocking plate 2 and guiding its continued downward movement, ultimately achieving effective and precise connection between the first arcuate convex surface 6.21 and the first arcuate groove 2.1.

[0054] To facilitate quick installation and removal of the operating rod 3, this embodiment includes an internally threaded sleeve 9 at the top of the blocking plate 2, and a matching external thread at the end of the operating rod 3. Installing the blocking plate 2 in the pre-embedded sleeve applies a vertical force, while installing and removing the operating rod 3 involves a rotational force around a vertical axis. These two forces do not interfere with each other, ensuring an effective connection between the blocking plate 2 and the operating rod 3 during installation. Furthermore, when removing the operating rod 3, the operating rod 3 does not pull the blocking plate 2 upward, thereby preventing disturbance of the connection between the blocking plate 2 and the limiting mechanism 6.

[0055] When using the above-mentioned device for construction, it should be ensured that the bottom end of the embedded sleeve 1 is inserted into a certain depth in the precipitation well 10; the top end of the embedded sleeve 1 is higher than a certain height of the finished surface of the structural base plate 11 to prevent concrete from falling into the embedded sleeve 1 when pouring the structural base plate 11; the aperture of the reserved hole 1.1 should meet the size of the water pump so that it can be removed smoothly.

[0056] When using the above device for construction:

[0057] Embed the pre-buried casing 1 in the structural base plate 11, and extend the bottom end of the pre-buried casing 1 into the precipitation well 10;

[0058] When the conditions for stopping precipitation are met, stop precipitation and remove the water pump in the precipitation well 10, connect and tighten the blocking plate 2 and the operating rod 3, and use the operating rod 3 to transport the blocking plate 2 downward to the guide rod 8 in the embedded casing 1, so that the guide rod 8 is inserted into the guide hole 2.2 to achieve the positioning and guidance of the blocking plate 2;

[0059] Continue to use the operating rod 3 to transport the blocking plate 2 downward to the limiting mechanism 6, so that the limiting mechanism 6 fixes the blocking plate 2 to achieve blocking of the reserved hole 1.1;

[0060] Rotate the operating rod 3 to separate the operating rod 3 from the blocking plate 2, so that the blocking plate 2 remains in the embedded sleeve 1, and then pour concrete in the embedded sleeve 1;

[0061] Before construction on the building ground, the portion of the pre-buried casing 1 that is higher than the finished surface of the structural bottom plate 11 is cut off, thus completing the plugging operation of the precipitation well 10 .

[0062] If groundwater flows into the embedded casing 1 from the reserved hole 1.1 during the installation of the blocking plate 2, after installing the blocking plate 2, the water in the embedded casing 1 can be pumped out using an external water pump, and then the operating rod 3 can be removed and concrete can be poured.

[0063] Compared with the prior art, the present invention has at least the following beneficial effects: the present sealing device can realize that when the structural base plate 11 is cast, the base plate of the embedded sleeve 1 and the structural base plate 11 block most of the openings of the precipitation well 10, and then use the sealing plate 2, the first water-stop ring 4 and the concrete cast in the embedded sleeve 1 to seal the reserved hole 1.1 to prevent groundwater from seeping into the embedded sleeve 1, and at the same time use the second water-stop ring 5 to cut off the water that may exist in the gap between the outer wall of the embedded sleeve 1 and the structural base plate 11 to prevent groundwater from seeping into the top of the structural base plate 11. Compared with the prior art in which the welding quality is difficult to control, the present invention can effectively seal the precipitation well 10 through the synergistic effect of the above-mentioned structures, prevent water seepage and leakage in the later stage of sealing, and improve the quality of the project; and the use of the present sealing device has low requirements on environmental conditions, and can also be used when the groundwater level is high or there is pressurized water in the stratum. It is only necessary to pump out the water in the embedded sleeve 2 before pouring the concrete.

[0064] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A structural bottom plate downhole well plugging device, characterized in that: include: A pre-buried sleeve, wherein a reserved hole is opened on the inner bottom plate of the pre-buried sleeve; A blocking plate, fixed in the embedded sleeve by a limiting mechanism, for blocking the reserved hole; a first water-stop ring, which is clamped by the inner bottom plate of the embedded sleeve and the blocking plate and is positioned on the outer periphery of the reserved hole; An operating rod is detachably arranged on the blocking plate and is used to move the blocking plate to the position of the limiting assembly.

2. The structural floor descending water well plugging device according to claim 1, characterized in that: The limiting mechanism has several groups distributed around the circumference of the sealing plate, which include a support part, a first movable rod and a stiffening assembly. The support part is fixedly arranged on the inner bottom plate of the embedded sleeve; the first movable rod is located between the stiffening assembly and the sealing plate, and is connected to the support part through a rotating shaft; the first movable rod and the sealing plate are respectively provided with a first arc-shaped convex surface and a first arc-shaped groove on the facing sides, the axis of the first arc-shaped convex surface is parallel to the rotating shaft, and the stiffening assembly can press the first arc-shaped convex surface tightly into the first arc-shaped groove.

3. The structural floor descending water well plugging device according to claim 2, characterized in that: The stiffening assembly includes a limiting portion, a second movable rod and a return spring, the limiting portion is fixedly configured on the inner bottom plate of the embedded sleeve; the return spring is located between the first movable rod and the second movable rod, and is connected to the support rod through the rotating shaft; the second movable rod and the limiting block are respectively provided with a second arc-shaped convex surface and a second arc-shaped groove on the facing sides, the axis of the second arc-shaped convex surface is parallel to the rotating shaft, and it can rotate around the rotating shaft in the second arc-shaped groove.

4. The structural floor descending water well plugging device according to claim 3, characterized in that: The second arc-shaped groove is recessed from the bottom to the top of the embedded sleeve, the limiting portion is provided with a horizontal supporting surface located at the bottom end of the second arc-shaped groove, and the second movable rod is located above the horizontal supporting surface.

5. The structural floor descending water well plugging device according to claim 3 or 4, characterized in that: The reinforcing assembly includes a U-shaped seat, the sealing end of the U-shaped seat is connected to the rotating shaft; a part of the second movable rod and the return spring are slidably arranged on the inner side of the U-shaped seat.

6. The structural floor descending water well plugging device according to claim 5, characterized in that: A guide rod is provided on the inner bottom plate of the embedded sleeve, and the guide rod and the embedded sleeve extend in the same direction. The blocking plate is provided with a guide hole corresponding to the position of the guide rod.

7. The structural floor descending water well plugging device according to claim 6, characterized in that: The top end of the blocking plate is provided with an internal thread sleeve, and the end of the operating rod is provided with an external thread adapted thereto.

8. The structural floor descending water well plugging device according to any one of claims 1-4, 5-6, characterized in that: At least two groups of second water-stop rings are sleeved on the outer circumference of the embedded sleeve, wherein the first water-stop rings are rubber water-stop rings and the second water-stop rings are rigid water-stop rings.

9. A method for constructing a water well plugging device for a structural floor using any one of claims 1 to 8, characterized in that: Including steps: Embed the pre-buried casing into the structural base plate so that the bottom end of the pre-buried casing extends into the precipitation well; When the conditions for stopping precipitation are met, stop precipitation and remove the water pump in the precipitation well, connect and tighten the blocking plate and the operating rod, use the operating rod to transport the blocking plate downward to the limit mechanism, so that the limit mechanism fixes the blocking plate to achieve blocking of the reserved hole; Separate the operating rod from the blocking plate, leaving the blocking plate in the embedded casing, and pour concrete in the embedded casing.

Images