A rapid plugging device for deep foundation pit dewatering well

Abstract

The application relates to a quick plugging device for a deep foundation pit dewatering well and relates to the technical field of dewatering wells, which comprises a dewatering well mouth, the top end of the dewatering well mouth is sleeved with a waterproof steel sleeve pipe, and the top end of the waterproof steel sleeve pipe is fixedly connected with a fixed plate. The application is characterized in that a lower sliding groove is arranged on the fixed plate, an upper sliding groove is arranged on a blind plate, a U-shaped plate is inserted into the corresponding lower sliding groove and upper sliding groove to reinforce the connection between the blind plate and the fixed plate, thereby avoiding the screw rod connecting the blind plate and the fixed plate from being easily detached, optimizing the plugging effect of the blind plate, a positioning block limited by a spring is arranged on the U-shaped plate, a positioning groove is arranged in the upper sliding groove, the bottom corner of the positioning block close to the opening end of the U-shaped plate is designed as an inclined surface, the positioning block can be directly lifted up under the action of the inclined surface when the U-shaped plate is installed, and the positioning block is automatically reset and inserted into the positioning groove under the action of the spring after the U-shaped plate is installed, thereby automatically positioning the U-shaped plate.

Description

Technical Field

[0001] This application relates to the field of dewatering well technology, and in particular to a rapid sealing device for dewatering wells in deep foundation pits. Background Technology

[0002] Deep foundation pit dewatering wells are specially designed well structures in construction projects to lower the groundwater level. During the excavation and construction of the foundation pit, water pumps installed inside the wells continuously extract groundwater, effectively controlling the decline of the surrounding water level and creating a dry and stable construction environment for the working face. This technology can significantly reduce the risk of slope instability, prevent seepage damage such as quicksand and piping, and ensure the safety of the foundation pit support system. It is a key protective measure for deep foundation pit projects.

[0003] Existing patent (publication number: CN221721696U) discloses a rapid sealing device for deep foundation pit dewatering wells, comprising: a sealing mechanism including an outer support assembly and a set of sealing components slidably embedded inside the outer support assembly; a positioning mechanism including an installation assembly fixedly installed on the upper side of the outer support assembly and a set of positioning components embedded on the installation assembly; the set of positioning components can respectively position the set of sealing components; this utility model uses a set of sealing components to pull along the outer support assembly to both sides. When pulled to the limit position, the set of positioning components moves on the installation assembly and then resets. At this time, the set of sealing components is limited by the set of positioning components, thereby maintaining the open state of the dewatering wellhead. After quickly extracting groundwater, it is filled and the blind plate is fixedly installed on the waterproof steel sleeve preset on the dewatering wellhead, thereby playing a preliminary sealing role for the dewatering wellhead.

[0004] The aforementioned sealing device restricts the blind plate through the sealing plate to reinforce it and prevent the bolts on the blind plate from falling off. However, in actual operation, additional installation and fixing of the sealing mechanism are required to fix the sealing mechanism on the upper side of the dewatering wellhead in order to achieve the restriction and reinforcement of the blind plate by the sealing plate. This increases the workload of workers and the difficulty of construction, and there is room for improvement. Utility Model Content

[0005] The purpose of this application is to provide a rapid sealing device for dewatering wells in deep foundation pits, which can quickly complete the restriction and reinforcement operation of blind flanges, save manpower, reduce construction difficulty, improve work efficiency, and solve the problems mentioned in the background art.

[0006] This application provides a rapid sealing device for deep foundation pit dewatering wells, employing the following technical solution: A rapid sealing device for deep foundation pit dewatering wells includes a dewatering wellhead. A waterproof steel sleeve is fixedly fitted to the top of the dewatering wellhead. A fixing plate is fixedly connected to the top of the waterproof steel sleeve. A blind plate is provided on the upper surface of the fixing plate. Equally spaced sliding grooves are formed on the bottom surface of the edge of the fixing plate. Equally spaced upper sliding grooves are formed on the upper surface of the edge of the blind plate. The positions of the sliding grooves and upper sliding grooves are respectively vertically aligned. Equally spaced U-shaped plates are provided on the periphery of the blind plate. The U-shaped plates are slidably inserted into the corresponding sliding grooves and upper sliding grooves. A positioning block is slidably inserted into the interior of the U-shaped plate. A positioning groove is formed inside each upper sliding groove. The bottom of the positioning block is slidably inserted into the blind plate through the positioning groove. A top plate is fixedly fitted to the top of the positioning block. A spring is fixedly connected between the top plate and the U-shaped plate. The bottom corner of the positioning block near the opening end of the U-shaped plate is set as a slope.

[0007] By adopting the above technical solution, a sliding groove is set on the fixed plate, an upper sliding groove is set on the blind plate, and a U-shaped plate is inserted into the corresponding sliding groove and upper sliding groove to reinforce the connection between the blind plate and the fixed plate. This prevents the screws connecting the blind plate and the fixed plate from easily falling off, thus optimizing the sealing effect of the blind plate. By setting a spring-restricted positioning block on the U-shaped plate, setting a positioning groove inside the upper sliding groove, and setting the bottom corner of the positioning block near the opening end of the U-shaped plate as a slope, the positioning block can be directly lifted by the slope when the U-shaped plate is installed. After the U-shaped plate is installed, the positioning block automatically resets and inserts into the positioning groove under the action of the spring, automatically positioning the U-shaped plate. Overall, the installation operation of the U-shaped plate can be completed quickly, simplifying the operation process, reducing construction difficulty, saving manpower, and improving work efficiency.

[0008] Preferably, a sealing protrusion is fixedly connected to the upper surface of the fixing plate, a sealing groove is provided at the bottom of the blind plate, the sealing protrusion is slidably inserted into the blind plate through the sealing groove, and a sealing ring is adhered to the upper surface of the sealing protrusion.

[0009] By adopting the above technical solution, and by setting sealing protrusions and sealing grooves, and by bonding sealing rings to the upper surface of the sealing protrusions, the sealing performance between the fixing plate and the blind plate can be enhanced, effectively preventing groundwater from seeping out from the connection between the two, and further optimizing the sealing effect.

[0010] Preferably, the positioning block is a long rectangular structure.

[0011] By adopting the above technical solution, the rectangular positioning block can always move vertically up and down, preventing it from rotating during movement, which would cause the orientation of the inclined surface to change and affect the subsequent installation of the U-shaped plate.

[0012] Preferably, the structure of the positioning groove is adapted to the bottom structure of the positioning block, and when the positioning block is inserted into the positioning groove, the U-shaped plate is fully inserted into the interior of the lower sliding groove and the upper sliding groove.

[0013] By adopting the above technical solution, the structure of the positioning groove and the bottom structure of the positioning block are adapted to each other, which can ensure the positioning effect of the positioning block on the U-shaped plate and prevent the U-shaped plate from easily falling off. When the positioning block is inserted into the positioning groove, the U-shaped plate is fully inserted into the lower sliding groove and the upper sliding groove, which makes the U-shaped plate accurately inserted into the lower sliding groove and the upper sliding groove, ensuring the tightness and stability of the connection between the various structures.

[0014] Preferably, the fixing plate and the blind plate have equidistant and corresponding threaded holes inside, and the fixing plate and the blind plate are fixedly connected by the threaded holes and the screw.

[0015] By adopting the above technical solution, the connection and fixation between the fixing plate and the blind plate are completed through the screw and threaded hole, so that the fixing plate and the blind plate can be stably connected.

[0016] Preferably, the upper surface of the fixing plate is fixedly connected with a plurality of rods arranged in a ring, and the bottom surface of the blind plate is provided with insertion holes corresponding to the rods, and the rods are slidably inserted into the blind plate through the insertion holes.

[0017] By adopting the above technical solution, the setting of the plug rod and the socket can play a guiding role, so that the threaded holes on the blind plate and the fixed plate can directly correspond during the installation of the blind plate, avoiding misalignment of the threaded holes and affecting the subsequent installation of the screw. Furthermore, the insertion of the plug rod into the socket can also restrict the blind plate, preventing the blind plate from easily rotating or displacing, and improving the stability of the connection between the blind plate and the fixed plate.

[0018] Preferably, a limiting block is fixedly connected to the outer surface of the positioning block, and the limiting block is slidably connected to the U-shaped plate through a limiting groove opened inside the U-shaped plate.

[0019] By adopting the above technical solution, the limiting block and the limiting groove can limit the sliding stroke of the positioning block in the U-shaped plate, preventing the positioning block from easily coming out of the U-shaped plate and causing structural damage.

[0020] Preferably, a recessed groove is provided in the center of the upper surface of the blind plate, and a handle is fixedly connected to the upper surface of the blind plate, with the handle located directly above the recessed groove.

[0021] By adopting the above technical solution, the sinkhole can provide a certain space for construction personnel to operate the handle, avoiding interference from the surrounding structure. The handle facilitates the handling, installation and disassembly of the blind flange by construction personnel, thus improving the convenience and efficiency of construction.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] This rapid sealing device for deep foundation pit dewatering wells utilizes a sliding groove on a fixed plate and an upper sliding groove on a blind plate. A U-shaped plate is inserted into the corresponding sliding and upper grooves to reinforce the connection between the blind plate and the fixed plate, preventing the connecting screws from easily detaching and optimizing the sealing effect of the blind plate. A spring-loaded positioning block is installed on the U-shaped plate, a positioning groove is created inside the upper sliding groove, and the bottom corner of the positioning block near the opening of the U-shaped plate is beveled. During installation, the positioning block is directly lifted by the bevel. After installation, the positioning block automatically resets and inserts into the positioning groove under the spring's action, automatically positioning the U-shaped plate. This allows for rapid installation of the U-shaped plate, simplifying the operation process, reducing construction difficulty, saving manpower, and improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this application;

[0025] Figure 2 This is a schematic diagram of the overall waterproof steel sleeve structure of this application;

[0026] Figure 3 This is a schematic diagram of the overall cross-section front view of this application;

[0027] Figure 4 For this application Figure 3 A magnified structural diagram at point A;

[0028] Figure 5 This is a schematic diagram of the bottom structure of the fixing plate in this application;

[0029] Figure 6 This is a schematic diagram of the top structure of the blind plate in this application;

[0030] Figure 7 This is a schematic diagram of the top structure of the fixing plate in this application;

[0031] Figure 8 This is a schematic diagram of the bottom structure of the blind plate in this application;

[0032] Figure 9 This is a schematic diagram of the overall structure of the positioning block in this application.

[0033] In the picture:

[0034] 1. Dewatering wellhead; 2. Waterproof steel casing; 3. Fixing plate; 4. Blind plate; 5. Sliding groove; 6. Upper sliding groove; 7. U-shaped plate; 8. Positioning block; 9. Positioning groove; 10. Top plate; 11. Spring; 12. Inclined surface; 13. Sealing protrusion; 14. Sealing groove; 15. Sealing ring; 16. Insert rod; 17. Insertion hole; 18. Limiting block; 19. Handle. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 This application will be described in further detail below.

[0036] Example 1: A rapid sealing device for dewatering wells in deep foundation pits, referring to... Figures 1-6 The system includes a dewatering wellhead 1, a waterproof steel sleeve 2 fixedly fitted to the top of the dewatering wellhead 1, a fixed plate 3 fixedly connected to the top of the waterproof steel sleeve 2, a blind plate 4 on the upper surface of the fixed plate 3, equidistant sliding grooves 5 on the bottom surface of the edge of the fixed plate 3, and equidistant upper sliding grooves 6 on the upper surface of the edge of the blind plate 4. The positions of the sliding grooves 5 and the upper sliding grooves 6 are respectively vertically corresponding. U-shaped plates 7 are equidistantly arranged on the periphery of the blind plate 4, and the U-shaped plates 7 are respectively slidably inserted into the interior of the vertically corresponding sliding grooves 5 and upper sliding grooves 6.

[0037] Reference Figure 4 , Figure 7 and Figure 8 A sealing protrusion 13 is fixedly connected to the upper surface of the fixing plate 3, and a sealing groove 14 is provided at the bottom of the blind plate 4. The sealing protrusion 13 is slidably inserted into the blind plate 4 through the sealing groove 14. A sealing ring 15 is bonded to the upper surface of the sealing protrusion 13. By setting the sealing protrusion 13 and the sealing groove 14, and bonding the sealing ring 15 to the upper surface of the sealing protrusion 13, the sealing performance between the fixing plate 3 and the blind plate 4 can be enhanced, effectively preventing groundwater from seeping out from the connection between the two, and further optimizing the sealing effect.

[0038] Reference Figure 1 and Figure 2 The fixing plate 3 and the blind plate 4 have equidistant and corresponding threaded holes inside. The fixing plate 3 and the blind plate 4 are fixedly connected by the threaded holes and the screw. The connection and fixation between the fixing plate 3 and the blind plate 4 are completed by the screw and the threaded holes, so that the fixing plate 3 and the blind plate 4 can be stably connected.

[0039] Reference Figure 7 and Figure 8The upper surface of the fixing plate 3 is fixedly connected with a plurality of insert rods 16 arranged in a ring. The bottom surface of the blind plate 4 is provided with insertion holes 17 corresponding to the insert rods 16. The insert rods 16 are slidably inserted into the blind plate 4 through the insertion holes 17. The setting of the insert rods 16 and the insertion holes 17 can play a guiding role, so that the threaded holes on the blind plate 4 and the fixing plate 3 can directly correspond during the installation of the blind plate 4, avoiding misalignment of the threaded holes and affecting the subsequent installation of the screws. Furthermore, the insertion of the insert rods 16 into the insertion holes 17 can also restrict the blind plate 4, preventing the blind plate 4 from easily rotating or displacing, and improving the stability of the connection between the blind plate 4 and the fixing plate 3.

[0040] Reference Figure 1 A recessed groove is provided in the center of the upper surface of the blind flange 4. A handle 19 is fixedly connected to the upper surface of the blind flange 4. The handle 19 is located directly above the recessed groove. The recessed groove can provide a certain space for construction personnel to operate the handle 19 and avoid interference from the surrounding structure of the handle 19. The handle 19 facilitates the construction personnel to carry, install and disassemble the blind flange 4, thereby improving the convenience and efficiency of construction.

[0041] Example 2: A rapid sealing device for deep foundation pit dewatering wells, referring to... Figure 1 , Figure 4 and Figure 9 A positioning block 8 is slidably inserted inside the U-shaped plate 7. A positioning groove 9 is provided inside each upper sliding groove 6. The bottom of the positioning block 8 is slidably inserted into the blind plate 4 through the positioning groove 9. A top plate 10 is fixedly sleeved on the top of the positioning block 8. A spring 11 is fixedly connected between the top plate 10 and the U-shaped plate 7. The bottom corner of the positioning block 8 near the opening end of the U-shaped plate 7 is set as a slope 12.

[0042] Reference Figure 3 , Figure 4 and Figure 9 The positioning block 8 is a long rectangular structure. The rectangular structure of the positioning block 8 enables it to move vertically up and down, preventing it from rotating during the movement, which would cause the orientation of the inclined surface 12 to change and affect the subsequent installation of the U-shaped plate 7.

[0043] Reference Figure 3 , Figure 4 and Figure 6 The structure of the positioning groove 9 is adapted to the bottom structure of the positioning block 8. When the positioning block 8 is inserted into the positioning groove 9, the U-shaped plate 7 is fully inserted into the lower sliding groove 5 and the upper sliding groove 6. The adaptation of the structure of the positioning groove 9 to the bottom structure of the positioning block 8 can ensure the positioning effect of the positioning block 8 on the U-shaped plate 7 and prevent the U-shaped plate 7 from easily falling off. When the positioning block 8 is inserted into the positioning groove 9, the U-shaped plate 7 is fully inserted into the lower sliding groove 5 and the upper sliding groove 6, which makes the U-shaped plate 7 accurately inserted into the lower sliding groove 5 and the upper sliding groove 6, ensuring the tightness and stability of the connection between the various structures.

[0044] Reference Figure 9 The outer surface of the positioning block 8 is fixedly connected to the limiting block 18. The limiting block 18 is slidably connected to the U-shaped plate 7 through the limiting groove opened inside the U-shaped plate 7. The limiting block 18 and the limiting groove can limit the sliding stroke of the positioning block 8 in the U-shaped plate 7, preventing the positioning block 8 from easily coming out of the U-shaped plate 7 and causing damage to the structure.

[0045] The implementation principle of this application embodiment is as follows: After the staff extracts groundwater and fills the dewatering well, the blind plate 4 is fixedly installed on the fixed plate 3 by screws. Then, the U-shaped plate 7 is slidably inserted into the corresponding upper and lower sliding grooves 5 and upper sliding grooves 6. The connection between the fixed plate 3 and the blind plate 4 is reinforced by the U-shaped plate 7, thereby preventing the screws connecting the blind plate 4 and the fixed plate 3 from easily falling off, and optimizing the sealing effect of the blind plate 4. During the installation of the U-shaped plate 7, when the U-shaped plate 7 is inserted into the lower sliding groove 5 and upper sliding groove 6, the positioning block 8 will be directly lifted by the inclined surface 12. The spring 11 fixedly connected between the top plate 10 and the U-shaped plate 7 is stretched. When the U-shaped plate 7 is installed in place, that is, when the bottom of the positioning block 8 corresponds to the position of the positioning groove 9, the positioning block 8 automatically resets and inserts into the positioning groove 9 under the action of the spring 11, thereby automatically positioning the U-shaped plate 7. Then the installation of the U-shaped plate 7 is completed. The whole operation can be completed quickly, which is convenient and fast, reduces the construction difficulty, saves manpower, and improves work efficiency.

Claims

1. A rapid sealing device for dewatering wells in deep foundation pits, comprising a dewatering wellhead (1), characterized in that: A waterproof steel sleeve (2) is fixedly fitted to the top of the dewatering wellhead (1). A fixing plate (3) is fixedly connected to the top of the waterproof steel sleeve (2). A blind plate (4) is provided on the upper surface of the fixing plate (3). Equally spaced sliding grooves (5) are opened on the bottom surface of the edge of the fixing plate (3). Equally spaced upper sliding grooves (6) are opened on the upper surface of the edge of the blind plate (4). The positions of the sliding grooves (5) and the upper sliding grooves (6) are respectively vertically aligned. Equally spaced U-shaped plates (7) are provided on the periphery of the blind plate (4). The upper and lower sliding grooves (5) and upper sliding grooves (6) are respectively slidably inserted into the interior of the U-shaped plate (7). A positioning block (8) is slidably inserted into the interior of each upper sliding groove (6). A positioning groove (9) is opened inside each upper sliding groove (6). The bottom of the positioning block (8) is slidably inserted into the blind plate (4) through the positioning groove (9). A top plate (10) is fixedly sleeved on the top of the positioning block (8). A spring (11) is fixedly connected between the top plate (10) and the U-shaped plate (7). The bottom corner of the positioning block (8) near the opening end of the U-shaped plate (7) is set as a slope (12).

2. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The upper surface of the fixed plate (3) is fixedly connected with a sealing protrusion (13), and the bottom of the blind plate (4) is provided with a sealing groove (14). The sealing protrusion (13) is slidably inserted into the blind plate (4) through the sealing groove (14), and a sealing ring (15) is bonded to the upper surface of the sealing protrusion (13).

3. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The positioning block (8) is a long rectangular structure.

4. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The structure of the positioning groove (9) is adapted to the bottom structure of the positioning block (8). When the positioning block (8) is inserted into the positioning groove (9), the U-shaped plate (7) is fully inserted into the sliding groove (5) and the upper sliding groove (6).

5. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The fixing plate (3) and the blind plate (4) have equidistant and corresponding threaded holes inside, and the fixing plate (3) and the blind plate (4) are fixedly connected by threaded holes and screws.

6. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The upper surface of the fixing plate (3) is fixedly connected with a plurality of insert rods (16) arranged in a ring. The bottom surface of the blind plate (4) is provided with insertion holes (17) corresponding to the insert rods (16). The insert rods (16) are slidably inserted into the blind plate (4) through the insertion holes (17).

7. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The outer surface of the positioning block (8) is fixedly connected to a limiting block (18), and the limiting block (18) is slidably connected to the U-shaped plate (7) through a limiting groove opened inside the U-shaped plate (7).

8. The rapid sealing device for deep foundation pit dewatering wells according to claim 1, characterized in that: The upper surface of the blind plate (4) is provided with a recessed groove in the center, and a handle (19) is fixedly connected to the upper surface of the blind plate (4), with the handle (19) located directly above the recessed groove.

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