A rapid plugging device for a deep foundation pit dewatering well and a method of using the same

Abstract

The application belongs to the technical field of building construction equipment, and discloses a rapid plugging device for a deep foundation pit dewatering well and a use method thereof, which comprises a deep well shell body, a plugging unit is hingedly connected to the top of the deep well shell body, a pulling unit is fixedly connected to one end of the bottom surface of the plugging unit, the bottom end of the pulling unit is bearing-connected with the deep well shell body, and a positioning block that is slidingly connected with the deep well shell body is clamped on the side of the pulling unit close to the deep well shell body. The first sealing slurry bin and the moving unit are matched to realize the effect of initial plugging. The bottom end of the moving plate completely extrudes the mortar in the first sealing slurry bin downward. When the mortar in the first sealing slurry bin is discharged downward and laid on the bottom of the inner cavity of the deep well shell body, the effect of initial rapid plugging of the bottom of the inner cavity of the deep well shell body is realized.

Description

Technical Field

[0001] This invention belongs to the field of construction equipment technology, specifically a rapid sealing device for deep foundation pit dewatering wells and its usage method. Background Technology

[0002] Deep foundation pit dewatering wells refer to the dewatering work carried out when the groundwater level is higher than the bottom surface of the excavation pit during excavation. Groundwater will continuously seep into the pit. In order to ensure that the foundation pit can be constructed under dry conditions and to prevent slope instability, quicksand in the foundation, pit bottom heave, piping at the bottom of the pit, and a decrease in the bearing capacity of the foundation, dewatering and waterproofing become key during construction. After the dewatering is completed, the sealing of the wells becomes a difficult point in waterproofing closure.

[0003] The existing method for sealing deep foundation pit dewatering wells generally involves putting concrete, gravel, or other water-stopping materials into the well and then covering the top of the well. In practice, the extensive use of concrete and other water-stopping materials will significantly increase costs and is inefficient. Furthermore, the continuous manual filling of water-stopping materials will increase the fatigue of the workers. Therefore, this method needs to be improved. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a rapid sealing device for deep foundation pit dewatering wells and its usage method, which solves the problem that the prior art cannot quickly and conveniently seal deep foundation pit dewatering wells.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid sealing device for deep foundation pit dewatering wells and its method of use, comprising a deep well shell body, a sealing unit hinged to the top of the deep well shell body, a pulling unit fixedly connected to one end of the bottom surface of the sealing unit, the bottom end of the pulling unit being bearing-connected to the deep well shell body, a positioning block slidably connected to the deep well shell body being engaged with the side of the pulling unit near the deep well shell body, and a second water-stop plate movably connected to the upper end of the inner cavity of the deep well shell body and in contact with the sealing unit, the bottom end of the second water-stop plate being in contact with the deep well shell body. The well casing body is movably engaged with a pressure-resistant unit. Both sides of the lower end of the pressure-resistant unit are abutted and connected to a stabilizing unit hinged to the inner wall of the deep water well casing body. The bottom of the stabilizing unit is abutted and connected to a moving unit. The bottom of the moving unit is fixedly connected to a first sealing slurry chamber that is movably engaged with the deep water well casing body. Both ends of the inner wall of the deep water well casing body have a dredging groove located below the pressure-resistant unit. Below the dredging groove, a sealing unit fixedly connected to the deep water well casing body is fixedly connected. The bottom end of the first sealing slurry chamber has six equally spaced grooves with smooth inner walls.

[0006] Preferably, the top surface of the second waterstop plate is fixedly connected to both sides of a first spring telescopic tube that is fixedly connected to the deep well shell body. The top of the deep well shell body is fixedly installed on both the front and rear sides near the pulling unit, and fixed units that abut against the sealing unit are fixedly installed. The inner cavity of the deep well shell body is fixedly installed on both sides of a dewatering pipe, and the bottom of the dewatering pipe extends to the bottom of the inner cavity of the deep well shell body.

[0007] Preferably, the sealing unit includes a first waterstop plate hinged to the top of the deep well shell body, and an abutting rod fixedly installed on the bottom surface of the first waterstop plate to abut against the second waterstop plate. The fixing unit includes an mounting plate fixedly connected to the deep well shell body, and an arc-shaped fixing rod movably connected inside the mounting plate to abut against the top of the sealing unit. A flexible spring is movably sleeved on the outer wall of the lower end of the arc-shaped fixing rod, and the upper and lower ends of the flexible spring are fixedly connected to the mounting plate and the deep well shell body from top to bottom, respectively.

[0008] Preferably, the pulling unit includes a fixing block that is fixedly connected to the sealing unit, a connecting rope that is fixedly connected to the bottom of the fixing block, and a rotating shaft that is connected to the bearing of the deep well shell body is wound around the bottom end of the connecting rope.

[0009] Preferably, the pressure-retaining unit includes a pressure-retaining rod that abuts against the bottom surface of the second water-stop plate. A pressure-retaining block is fixedly connected to the outer wall of the middle end of the pressure-retaining rod. Both ends of the pressure-retaining block are movably connected to the inner wall of the deep well shell body. A second spring telescopic tube corresponding to and communicating with the dredging groove is fixedly installed at the bottom ends of both sides of the pressure-retaining block. The lower ends of both sides of the pressure-retaining block are abutting against the stabilizing unit.

[0010] Preferably, the stabilizing unit includes a stabilizing column hinged to the inner wall of the deep well shell, and a limiting spring telescopic cylinder fixedly connected to the middle end of the bottom surface of the stabilizing column and fixedly connected to the inner wall of the deep well shell.

[0011] Preferably, the moving unit includes two third spring telescopic tubes, both of which are fixedly connected to the first sealing slurry chamber. The top of the third spring telescopic tube is fixedly connected to a moving plate that is movably connected to the inside of the first sealing slurry chamber. The bottom of the moving plate is fixedly installed with six slotted plates that engage with the inside of the bottom of the first sealing slurry chamber.

[0012] Preferably, the sealing unit includes a delivery pipe fixedly connected to the bottom end of the unblocking groove, a pushing airbag fixedly connected to the end of the delivery pipe away from the unblocking groove, a pushing plate fixedly connected to the end of the pushing airbag away from the delivery pipe, and a second sealing slurry chamber movably engaged at the end of the pushing plate away from the pushing airbag.

[0013] Preferably, the bottom end of the second sealed slurry chamber is provided with several slurry outlet grooves, and two sets of pushing airbags are provided at both ends of the push plate near the side wall of the moving unit.

[0014] A method for using a rapid sealing device for deep foundation pit dewatering wells, comprising the aforementioned rapid sealing device for deep foundation pit dewatering wells, is as follows:

[0015] First, rotating the rotating shaft causes the connecting rope to pull the fixing block, which in turn causes the first waterstop plate to gradually contact the top of the deep well shell. The bottom of the first waterstop plate, near the pulling unit, will abut against the top of the arc-shaped fixing rod. After abutting, the top of the arc-shaped fixing rod will move downward, and its outer end will gradually abut against the top of the first waterstop plate. Then, the positioning block is pulled to engage with the front end of the rotating shaft, thereby fixing the rotating shaft. The positioning block is then fixed to the deep well shell using steel reinforcement.

[0016] Subsequently, as the first waterstop plate flips downward, it will cause the abutment rod to press downward against the top of the second waterstop plate. As the second waterstop plate gradually moves downward, the abutment rod will press against the outside of the stabilizing column. At this time, the bottom of the stabilizing column will press downward against the top of the moving plate. Then, the bottom of the moving plate will completely squeeze the mortar inside the first sealing slurry chamber downward. Before this, the staff will use the dewatering pipe and the existing water pump to pump water into the inside of the deep well shell. When the water level is within the normal range, the mortar inside the first sealing slurry chamber will be used to seal it. By pressing the moving unit and the first sealing slurry chamber with the stabilizing unit, the first sealing slurry chamber and the moving unit will fix and seal the bottom mortar.

[0017] Subsequently, as the pressure rod descends, the pressure block will move downwards along with it, causing the air inside to fill the inside of the pushing airbag through the dredging groove and delivery pipe. After the pushing airbag expands, it will push the pushing plate to squeeze the sealing slurry inside the second sealing slurry chamber, causing it to flow into the junction of the first sealing slurry chamber and the deep well shell body. At this time, the first sealing slurry chamber and the deep well shell body will be completely sealed. Through the sealing at the bottom of the first sealing slurry chamber, and then through the sealing of the first sealing slurry chamber again, a double sealing effect is achieved, thereby realizing the purpose of sealing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This invention achieves initial sealing by combining a first sealing grout chamber and a moving unit. The abutment rod presses downward against the top of the second water-stop plate, causing the abutment rod to abut against the outside of the stabilizing column. The bottom of the stabilizing column presses downward against the top of the moving plate. At this time, the bottom of the moving plate completely squeezes the mortar inside the first sealing grout chamber downward. When the mortar inside the first sealing grout chamber is discharged downward and laid on the bottom of the inner cavity of the deep well shell, the initial and rapid sealing effect of the bottom of the inner cavity of the deep well shell is achieved.

[0020] This invention improves the sealing effect of the first sealing slurry chamber in subsequent activities by setting up a sealing unit and a pressing unit, thereby achieving a secondary sealing effect. The pressing rod drives the pressing block to move downwards together, so that the air inside the pressing block fills the inside of the pushing airbag through the dredging groove and the delivery pipe, and after it expands, it pushes the pushing plate to squeeze the sealing slurry inside the second sealing slurry chamber, so that it flows into the junction of the first sealing slurry chamber and the deep water well shell body. At this time, a fixed sealing effect is achieved between the first sealing slurry chamber and the deep water well shell body. After the bottom of the first sealing slurry chamber is initially sealed, the top of the first sealing slurry chamber is then sealed and fixed to the deep water well shell body, thereby achieving a secondary sealing effect.

[0021] This invention achieves rapid sealing by combining a sealing unit and a pulling unit. Rotating the rotating shaft causes the connecting rope to pull the fixing block, bringing the first water-stop plate into contact with the top of the deep well shell. The bottom of the first water-stop plate will press against the top of the arc-shaped fixing rod. After contact, the top of the arc-shaped fixing rod will move downwards, while its outer end will gradually limit and contact the top of the first water-stop plate. Subsequently, pulling the positioning block will engage the front end of the rotating shaft, thereby fixing the rotating shaft. The positioning block is then fixed to the deep well shell using steel reinforcement, thus achieving rapid sealing of the top of the deep well shell. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention from a bottom view;

[0025] Figure 4 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0026] Figure 5 for Figure 4A magnified schematic diagram of the local structure at point B;

[0027] Figure 6 This is a partial sectional view of the side structure of the present invention;

[0028] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0029] Figure 8 This is a schematic diagram showing the structural relationship between the stabilizing unit and the edge sealing unit of the present invention.

[0030] In the diagram: 1. Deep well outer shell; 2. Sealing unit; 21. First waterstop plate; 22. Abutment rod; 3. Fixing unit; 31. Arc-shaped fixing rod; 32. Mounting plate; 33. Flexible spring; 4. Pulling unit; 41. Rotating shaft; 42. Connecting rope; 43. Fixing block; 5. Positioning block; 6. Second waterstop plate; 7. First spring telescopic tube; 8. Pressing unit; 81. Pressing rod; 82. Second spring telescopic tube; 83. Pressing block; 9. Stabilizing unit; 91. Stabilizing column; 92. Limiting spring telescopic cylinder; 10. Moving unit; 101. Moving plate; 102. Third spring telescopic tube; 11. First sealing slurry chamber; 12. Sealing unit; 121. Conveying pipe; 122. Pushing airbag; 123. Second sealing slurry chamber; 124. Pushing plate; 13. Dewatering pipe; 14. Dredging groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 8As shown, this invention provides a rapid sealing device for deep foundation pit dewatering wells and its usage method, including a deep well shell body 1, a sealing unit 2 hinged to the top of the deep well shell body 1, a pulling unit 4 fixedly connected to one end of the bottom surface of the sealing unit 2, the bottom end of the pulling unit 4 being bearing-connected to the deep well shell body 1, a positioning block 5 slidably connected to the deep well shell body 1 and engaged on the side of the pulling unit 4 near the deep well shell body 1, and a second water-stop plate 6 movably connected to the upper end of the inner cavity of the deep well shell body 1 and in contact with the sealing unit 2, the bottom of the second water-stop plate 6... The deep well shell body 1 is connected to a pressure unit 8 at one end, which is movably engaged with the pressure unit 8. The two sides of the lower end of the pressure unit 8 are connected to a stabilizing unit 9 which is hinged to the inner wall of the deep well shell body 1. The bottom of the stabilizing unit 9 is connected to a moving unit 10. The bottom of the moving unit 10 is fixedly connected to a first sealing slurry chamber 11 which is movably engaged with the deep well shell body 1. The inner walls of the deep well shell body 1 are provided with dredging grooves 14 located below the pressure unit 8 at both ends. The bottom of the dredging grooves 14 is fixedly connected to a sealing unit 12 which is fixedly connected to the deep well shell body 1.

[0033] The above scheme achieves the initial sealing effect by coordinating the first sealing slurry chamber 11 and the moving unit 10, and improves the sealing effect of the first sealing slurry chamber 11 in subsequent activities by coordinating the edge sealing unit 12 and the pressure unit 8, thus achieving the secondary sealing effect. Finally, it achieves the rapid sealing effect by coordinating the sealing unit 2 and the pulling unit 4.

[0034] like Figure 4 As shown, the top surfaces of the second waterstop plate 6 are fixedly connected to the first spring telescopic tube 7, which is fixedly connected to the deep well shell body 1. The front and rear sides of the top of the deep well shell body 1 near the pulling unit 4 are fixedly installed with the fixing unit 3, which is in contact with the sealing unit 2. The sides of the inner cavity of the deep well shell body 1 are fixedly installed with the dewatering pipe 13, and the bottom of the dewatering pipe 13 extends to the bottom of the inner cavity of the deep well shell body 1.

[0035] The above scheme is adopted: through the cooperation of the first spring telescopic tube 7 and the dewatering pipe 13, the first spring telescopic tube 7 will play a corresponding limiting and stabilizing role in the movement of the second water stop plate 6. The dewatering pipe 13 adopts an embedded design. Before the bottom slurry is sealed, the dewatering pipe 13 is used to carry out continuous dewatering operations. In the subsequent top sealing operation, the dewatering pipe 13 can be interrupted so that it remains inside the deep well shell body 1.

[0036] like Figure 3 , Figure 4As shown, the sealing unit 2 includes a first water-stop plate 21 hinged to the top of the deep well shell body 1. The bottom surface of the first water-stop plate 21 is fixedly installed with an abutting rod 22 that abuts against the second water-stop plate 6. The fixing unit 3 includes an mounting plate 32 fixedly connected to the deep well shell body 1. The inside of the mounting plate 32 is movably connected with an arc-shaped fixing rod 31 that abuts against the top of the sealing unit 2. A flexible spring 33 is movably sleeved on the outer wall of the lower end of the arc-shaped fixing rod 31. The upper and lower ends of the flexible spring 33 are fixedly connected to the mounting plate 32 and the deep well shell body 1 from top to bottom, respectively. The pulling unit 4 includes a fixing block 43 fixedly connected to the sealing unit 2. A connecting rope 42 is fixedly connected to the bottom of the fixing block 43. The bottom end of the connecting rope 42 is wound with a rotating shaft 41 that is connected to the bearing of the deep well shell body 1.

[0037] The above scheme is adopted: through the cooperation of the sealing unit 2, the fixing unit 3 and the pulling unit 4, the rotating shaft 41 is rotated so that the connecting rope 42 pulls the fixing block 43 to drive the first water-stop plate 21 to gradually contact the top of the deep well shell body 1. The first water-stop plate 21 abuts against the arc-shaped fixing rod 31 and causes its top end to move downward. At the same time, its outer end gradually limits and abuts against the top of the first water-stop plate 21. Then, the positioning block 5 is pulled to lock the front end of the rotating shaft 41, thereby fixing the rotating shaft 41. The positioning block 5 is fixed to the deep well shell body 1 using steel reinforcement material, thereby achieving the sealing and plugging effect on the top of the deep well shell body 1.

[0038] like Figure 8 As shown, the pressure unit 8 includes a pressure rod 81 that abuts against the bottom surface of the second waterstop plate 6. A pressure block 83 is fixedly connected to the outer wall of the middle end of the pressure rod 81. Both ends of the pressure block 83 are movably connected to the inner wall of the deep well shell body 1. The bottom ends of both sides of the pressure block 83 are fixedly installed with a second spring telescopic tube 82 that corresponds to and communicates with the dredging groove 14. The lower ends of both sides of the pressure block 83 are abutting against the stabilizing unit 9. The sealing unit 12 includes a conveying pipe 121 that is fixedly connected to the bottom end of the dredging groove 14. A pushing airbag 122 is fixedly connected to the end of the conveying pipe 121 away from the dredging groove 14. A pushing plate 124 is fixedly connected to the end of the pushing airbag 122 away from the conveying pipe 121. A second sealing slurry chamber 123 is movably engaged at the end of the pushing plate 124 away from the pushing airbag 122.

[0039] The above scheme is adopted: through the cooperation of the pressing unit 8 and the sealing unit 12, the downward movement of the second water-stop plate 6 will drive the pressing rod 81, the second spring telescopic tube 82 and the pressing block 83 to move downward together. The second spring telescopic tube 82 is a round rod, a round tube and a spring working together. When the pressing block 83 abuts against the round rod at the top of the second spring telescopic tube 82, the bottom end of the round rod will move outward inside the round tube, and the gas will fill the inside of the pushing airbag 122. After the pushing airbag 122 expands, it will push the slurry inside the pushing plate 124 through the second sealing slurry chamber 123 to make it flow outward, thereby facilitating the subsequent improvement of the sealing effect.

[0040] like Figure 7 , Figure 8 As shown, the stabilizing unit 9 includes a stabilizing column 91 hinged to the inner wall of the deep well shell body 1. A limiting spring telescopic cylinder 92, which is fixedly connected to the inner wall of the deep well shell body 1, is fixedly connected to the middle of the bottom surface of the stabilizing column 91. The moving unit 10 includes two third spring telescopic tubes 102, both of which are fixedly connected to the first sealing slurry chamber 11. A moving plate 101, which is movably connected to the inside of the first sealing slurry chamber 11, is fixedly connected to the top of the third spring telescopic tube 102. Six slotted plates that engage with the inside of the bottom of the first sealing slurry chamber 11 are fixedly installed at the bottom of the moving plate 101.

[0041] The above scheme is adopted: through the cooperation of the stabilizing unit 9 and the moving plate 101, the bottom end of the stabilizing column 91 will limit and abut the top of the moving unit 10, and at the same time the limiting spring telescopic cylinder 92 will perform a subsequent reset effect. The groove plate at the bottom of the moving plate 101 will abut against the groove inside the first sealing slurry chamber 11, thereby preventing the slurry residue inside the groove.

[0042] like Figure 5 , Figure 8 As shown, the bottom end of the second sealing slurry chamber 123 is provided with several slurry outlet grooves, and the two ends of the push plate 124 near the side wall of the moving unit 10 are provided with two sets of push airbags 122. The bottom end of the first sealing slurry chamber 11 is provided with six equally spaced grooves, and the inner wall of the grooves is smooth.

[0043] The above solution is adopted: by designing the slurry outlet groove at the bottom of the second sealing slurry chamber 123, when the pushing airbag 122 squeezes the pushing plate 124, the end of the pushing plate 124 away from the moving unit 10 will squeeze out the slurry inside the second sealing slurry chamber 123, thereby sealing the edge seal of the first sealing slurry chamber 11 and the deep well shell body 1, thereby improving the sealing effect. Furthermore, by pushing out the slurry simultaneously through the two pushing airbags 122, the pushing force of the pushing plate 124 will be increased, and the groove at the bottom of the first sealing slurry chamber 11 will facilitate the subsequent fall of the slurry inside.

[0044] Working principle and usage process of this invention:

[0045] First, rotating the rotating shaft 41 causes the connecting rope 42 to pull the fixing block 43, which in turn causes the first waterstop plate 21 to gradually contact the top of the deep well shell body 1. The bottom surface of the first waterstop plate 21 near the pulling unit 4 will abut against the top of the arc-shaped fixing rod 31. After abutting, the top of the arc-shaped fixing rod 31 will move downward, and its outer end will gradually limit and abut against the top of the first waterstop plate 21. Then, the positioning block 5 is pulled to engage with the front end of the rotating shaft 41, thereby fixing the rotating shaft 41. The positioning block 5 is then fixed to the deep well shell body 1 using steel reinforcement.

[0046] Subsequently, as the first waterstop plate 21 flips downward, it will cause the abutment rod 22 to press downward against the top of the second waterstop plate 6. As the second waterstop plate 6 gradually moves downward, the abutment rod 81 will abut against the outside of the stabilizing column 91. At this time, the bottom end of the stabilizing column 91 will press downward against the top of the moving plate 101. Then, the bottom end of the moving plate 101 will completely squeeze the mortar inside the first sealing slurry chamber 11 downward. Before this, the staff will use the dewatering pipe 13 and the existing water pump to pump water into the interior of the deep well shell 1. When the water level is within the normal range, the mortar inside the first sealing slurry chamber 11 will be used to seal it. By pressing the moving unit 10 and the first sealing slurry chamber 11 with the stabilizing unit 9, the first sealing slurry chamber 11 and the moving unit 10 will be fixed and sealed to the bottom mortar.

[0047] Subsequently, as the pressure rod 81 descends, the pressure block 83 will move downwards along with it, causing the air inside to be filled into the pushing airbag 122 through the unblocking groove 14 and the delivery pipe 121. After the pushing airbag 122 expands, it will push the pushing plate 124 to squeeze the sealing slurry inside the second sealing slurry chamber 123, causing it to flow into the junction of the first sealing slurry chamber 11 and the deep well shell body 1. At this time, the first sealing slurry chamber 11 and the deep well shell body 1 will be completely sealed. Through the sealing at the bottom of the first sealing slurry chamber 11, and through the sealing of the first sealing slurry chamber 11 again, a double sealing effect is achieved, thereby realizing the purpose of sealing.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid sealing device for deep foundation pit dewatering wells, comprising a deep well shell body (1), characterized in that: A sealing unit (2) is hinged to the top of the deep well shell body (1). A pulling unit (4) is fixedly connected to one end of the bottom surface of the sealing unit (2). The bottom end of the pulling unit (4) is connected to the bearing of the deep well shell body (1). A positioning block (5) that slides and connects to the deep well shell body (1) is snapped onto the side of the pulling unit (4) near the deep well shell body (1). A second water-stop plate (6) that abuts against the sealing unit (2) is movably connected to the upper end of the inner cavity of the deep well shell body (1). A pressure unit (8) that is movably snapped onto the deep well shell body (1) is abutted to the bottom end of the second water-stop plate (6). A stabilizing unit that is hinged to the inner wall of the deep well shell body (1) is abutted to both sides of the lower end of the pressure unit (8). (9) The bottom of the stabilizing unit (9) is connected to the moving unit (10). The bottom of the moving unit (10) is fixedly connected to the first sealing slurry chamber (11) which is movably engaged with the deep well shell body (1). The bottom of the first sealing slurry chamber (11) has six equally spaced grooves. The inner wall of the grooves is smooth. The inner walls of the deep well shell body (1) have dredging grooves (14) located below the pressure unit (8) at both ends. The bottom of the dredging groove (14) is fixedly connected to the sealing unit (12) which is fixedly connected to the deep well shell body (1). The top of the deep well shell body (1) is fixedly installed on both the front and rear sides near the pulling unit (4) with a fixed unit (3) that is connected to the sealing unit (2). The top surfaces of the second waterstop plate (6) are fixedly connected to the first spring telescopic tube (7) which is fixedly connected to the deep well shell body (1). The two sides of the inner cavity of the deep well shell body (1) are fixedly installed with the dewatering pipe (13), and the bottom of the dewatering pipe (13) extends to the bottom of the inner cavity of the deep well shell body (1). The sealing unit (2) includes a first waterstop plate (21) hinged to the top of the deep well shell body (1). The bottom surface of the first waterstop plate (21) is fixedly installed with an abutting rod (22) that abuts against the second waterstop plate (6). The fixing unit (3) includes an mounting plate (32) fixedly connected to the deep well shell body (1). The inside of the mounting plate (32) is movably connected with an arc-shaped fixing rod (31) that abuts against the top of the sealing unit (2). The outer wall of the lower end of the arc-shaped fixing rod (31) is movably sleeved with a flexible spring (33). The upper and lower ends of the flexible spring (33) are fixedly connected to the mounting plate (32) and the deep well shell body (1) from top to bottom, respectively.

2. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The pulling unit (4) includes a fixed block (43) fixedly connected to the sealing unit (2). A connecting rope (42) is fixedly connected to the bottom of the fixed block (43). A rotating shaft (41) connected to the bearing of the deep well shell body (1) is wound around the bottom end of the connecting rope (42).

3. The rapid sealing device for deep foundation pit dewatering wells according to claim 2, characterized in that: The pressure unit (8) includes a pressure rod (81) that abuts against the bottom surface of the second water stop plate (6). A pressure block (83) is fixedly connected to the outer wall of the middle end of the pressure rod (81). Both ends of the pressure block (83) are movably connected to the inner wall of the deep well shell body (1). The bottom ends of both sides of the pressure block (83) are fixedly installed with a second spring telescopic tube (82) that corresponds to and communicates with the dredging groove (14). The lower ends of both sides of the pressure block (83) are abutted against the stabilizing unit (9).

4. The rapid sealing device for deep foundation pit dewatering wells according to claim 3, characterized in that: The stabilizing unit (9) includes a stabilizing column (91) hinged to the inner wall of the deep well shell body (1), and a limiting spring telescopic cylinder (92) fixedly connected to the middle end of the bottom surface of the stabilizing column (91) and fixedly connected to the inner wall of the deep well shell body (1).

5. The rapid sealing device for deep foundation pit dewatering wells according to claim 4, characterized in that: The moving unit (10) includes two third spring telescopic tubes (102) that are fixedly connected to the first sealing slurry chamber (11). The top of the third spring telescopic tube (102) is fixedly connected to a moving plate (101) that is movably connected to the inside of the first sealing slurry chamber (11). The bottom of the moving plate (101) is fixedly installed with six slotted plates that engage with the inside of the bottom of the first sealing slurry chamber (11).

6. The rapid sealing device for deep foundation pit dewatering wells according to claim 5, characterized in that: The sealing unit (12) includes a delivery pipe (121) fixedly connected to the bottom end of the unblocking groove (14). A pushing airbag (122) is fixedly connected to one end of the delivery pipe (121) away from the unblocking groove (14). A pushing plate (124) is fixedly connected to one end of the pushing airbag (122) away from the delivery pipe (121). A second sealing slurry chamber (123) is movably engaged at one end of the pushing plate (124) away from the pushing airbag (122).

7. The rapid sealing device for deep foundation pit dewatering wells according to claim 6, characterized in that: The bottom end of the second sealing slurry chamber (123) is provided with several slurry outlet grooves, and the two ends of the push plate (124) near the side wall of the moving unit (10) are provided with two sets of push airbags (122).

8. A method for using a rapid sealing device for deep foundation pit dewatering wells, characterized in that: The rapid sealing device for deep foundation pit dewatering wells as described in claim 7 operates as follows: First, rotating the rotating shaft (41) causes the connecting rope (42) to pull the fixing block (43), which in turn causes the first waterstop plate (21) to gradually contact the top of the deep well shell body (1). The bottom surface of the first waterstop plate (21) near the pulling unit (4) will abut against the top of the arc-shaped fixing rod (31). After abutting, the top of the arc-shaped fixing rod (31) will move downward, and its outer end will gradually abut against the top of the first waterstop plate (21). Then, the positioning block (5) is pulled to engage with the front end of the rotating shaft (41), thereby fixing the rotating shaft (41). The positioning block (5) is fixed to the deep well shell body (1) using steel reinforcement. Afterwards, as the first waterstop plate (21) flips downwards, it will cause the abutment rod (22) to press down on the top of the second waterstop plate (6). As the second waterstop plate (6) gradually moves down, the abutment rod (81) will abut against the outside of the stabilizing column (91). At this time, the bottom end of the stabilizing column (91) will press down on the top of the moving plate (101). At this time, the bottom end of the moving plate (101) will completely squeeze the mortar inside the first sealing slurry chamber (11) downwards. Before that, the staff used the dewatering pipe (13) and the existing water pump to pump water into the inside of the deep well shell body (1). When the water level is within the normal range, the mortar inside the first sealing slurry chamber (11) is used to seal it. By pressing the moving unit (10) and the first sealing slurry chamber (11) with the stabilizing unit (9), the first sealing slurry chamber (11) and the moving unit (10) are fixed and sealed to the bottom mortar. Subsequently, when the pressure bar (81) descends, the pressure block (83) will move downward together, and the air inside it will fill the inside of the push airbag (122) through the dredging groove (14) and the delivery pipe (121). After the push airbag (122) expands, it will push the push plate (124) to squeeze the sealing slurry inside the second sealing slurry chamber (123), so that it flows into the junction of the first sealing slurry chamber (11) and the deep well shell body (1). At this time, the first sealing slurry chamber (11) and the deep well shell body (1) will be completely sealed. Through the sealing of the bottom of the first sealing slurry chamber (11), and through the sealing of the first sealing slurry chamber (11) again, a double sealing effect is achieved, thereby achieving the purpose of sealing.

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