Novel sealing device for basement dewatering well

Abstract

The invention relates to the technical field of basement dewatering wells, in particular to a novel sealing device for a basement dewatering well, which is characterized in that a water stop sleeve is fixedly connected in a concrete raft, a drainage pipe is inserted in a hollow steel pipe, a positioning rod is arranged at the bottom of the hollow steel pipe, and a flexible gasket and a threaded ring are arranged on the surface of a sealing plate; a threaded cover opening is formed in the bottom of the annular steel ring; the method has the beneficial effects that firstly, the annular steel ring is arranged on the hollow steel pipe in a sleeving mode, then the drainage pipe is connected with the water suction pump to facilitate follow-up water pumping, the annular steel ring is moved into the water stop sleeve and fixed in a full-length welding mode, and after the annular steel ring is welded, the hollow steel pipe is lifted to the threaded cover opening; the hollow steel pipe is screwed to enable the threaded ring on the lower portion of the positioning rod to be tightly combined with the threaded cover opening, the flexible gasket is arranged between the threaded ring and the threaded cover opening, and pressure generated by underground water is from bottom to top, so that the larger the water pressure on the plugging portion is, the tighter the plugging portion is, and finally the surface of the positioning rod and the inner ring of the annular steel ring are welded to improve sealing performance.

Description

Technical Field

[0001] The invention relates to the technical field of basement drainage wells, and in particular to a novel sealing device for a basement drainage well. Background Art

[0002] When it comes to basement construction, the drainage wells under the raft foundation are used to lower the groundwater level and ensure that the foundation pit is dry to facilitate subsequent construction. However, after the excavation of the foundation pit and the pouring of the raft slab, how to effectively seal these drainage wells to prevent groundwater leakage has become an important technical problem.

[0003] When the existing technology uses sand and gravel for sealing, the gaps between the sand and gravel materials are large, which makes it easy for water to penetrate and cannot provide an effective sealing barrier. Even after compaction, it is difficult to completely avoid the existence of tiny cracks or channels, resulting in a high porosity of the sand and gravel backfill. At the same time, defects such as pores and slag inclusions may occur during the welding process, resulting in local sealing failure and defects at the welding points. At the same time, this method is difficult to operate in actual operation when the groundwater pressure is high, and the sealing effect is poor, leakage is easy to occur, and secondary sealing is required.

[0004] To this end, the present invention proposes a novel sealing device for a basement drainage well to solve the above-mentioned problem. Summary of the invention

[0005] The purpose of the present invention is to provide a novel sealing device for a basement drainage well to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a new type of basement dewatering well closing device, the new type of basement dewatering well closing device comprising: a water stop sleeve, the water stop sleeve is fixedly connected in the concrete raft;

[0007] A hollow steel pipe, a drain port is provided on the side of the hollow steel pipe, a drain pipe is inserted into the hollow steel pipe, a positioning rod is provided at the bottom of the hollow steel pipe, a sealing plate is provided at the bottom of the positioning rod, and a flexible gasket and a threaded ring are provided on the surface of the sealing plate;

[0008] The annular steel ring has a threaded cover at the bottom.

[0009] Preferably, a fixing rod is provided on the surface of the positioning rod, the fixing rod is inserted into the hollow steel pipe, a sealing plate is fixedly connected to the bottom of the positioning rod, the sealing plate has a circular plate structure, and a flexible gasket is fixedly connected to the surface of the sealing plate, the flexible gasket has an annular plate structure.

[0010] Preferably, the threaded ring is fixedly connected to the surface of the sealing plate, the positioning rod is fixedly welded to the bottom of the hollow steel pipe, the threaded ring is threadedly connected to the threaded cover opening, the threaded cover opening is in an annular plate structure, and the annular steel ring is fixedly welded to the inner ring surface of the water stop casing through the first welding point.

[0011] Preferably, the side surface of the positioning rod can be welded to the inner ring surface of the annular steel ring through the second welding point. One end of the drain pipe is inserted into the hollow steel pipe, and the other end of the drain pipe is connected to the water pump.

[0012] Preferably, an installation plate is arranged on the surface of the drain opening. Through holes are formed in the side surface of the installation plate, and a filter screen is arranged in the through holes. The installation plate is fixedly connected to the surface of the drain opening by bolts. The filter screen covers the drain opening, and one end of the drain pipe is located on the side of the drain opening.

[0013] Preferably, a limiting ring is arranged in the hollow steel pipe. A fixing nut is arranged on the surface of the limiting ring. The drain pipe passes through the fixing nut and the limiting ring. Threads are formed on the outer ring surface of the limiting ring, and the limiting ring is screwed into the hollow steel pipe through the threads formed on the outer ring surface. A damping ring is arranged on the inner ring surface of the limiting ring. There are multiple groups of damping rings, and the multiple groups of damping rings are linearly arranged at equal intervals on the inner side surface of the limiting ring. The damping ring is made of rubber.

[0014] Preferably, the fixing nut is fixedly connected to the surface of the limiting ring. A limiting plate and a moving plate are arranged on the side surface of the fixing nut. The limiting plate is in a square plate structure. A threaded hole is formed in the surface of the limiting plate, and a limiting screw is screwed into the threaded hole. A support plate is arranged at one end of the limiting screw. The support plate is in a "C"-shaped plate structure, and the support plate is clamped on the upper surface of the water stop casing.

[0015] Preferably, a square opening is formed in the surface of the moving plate. A lifting plate is inserted into the square opening, and the lifting plate is slidably connected to the square opening. The lifting plate is in a square plate structure. A bottom plate is arranged on the surface of the lifting plate. A return spring is sleeved on the surface of the lifting plate. One end of the return spring is fixedly connected to the bottom of the bottom plate, and the other end of the return spring is fixedly connected to the surface of the moving plate. The moving plate is in an overall square plate structure.

[0016] Preferably, a cleaning plate is arranged on the inner side surface of the lifting plate. The cleaning plate is in a square plate structure. The length of the long side of the side surface of the cleaning plate is the same as the length of the long side of the side surface of the installation plate. A cleaning scraper is arranged on the inner side surface of the cleaning plate. The cleaning scraper is made of rubber, and the cleaning scraper is in contact with the surface of the filter screen.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The present invention proposes a new type of sealing device for a basement drainage well. First, an annular steel ring is sleeved on a hollow steel pipe, and then a drain pipe is inserted into the hollow steel pipe. After the drain pipe is connected to a water pump for subsequent pumping, the annular steel ring is moved to a water stop sleeve and fully welded and fixed. After the annular steel ring is welded, the hollow steel pipe is lifted to reach the threaded cover, and the hollow steel pipe is twisted to make the threaded ring at the lower part of the positioning rod fit tightly with the threaded cover. Because a flexible gasket is arranged between the threaded ring and the threaded cover and the pressure generated by groundwater is from bottom to top, the greater the water pressure on the sealing part, the tighter the sealing part is. Finally, the surface of the positioning rod is welded to the inner ring of the annular steel ring to increase the sealing performance and eliminate the hidden danger of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the hollow steel pipe and the positioning rod of the present invention;

[0022] Figure 4 This is a schematic diagram of the structural positioning nut structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the hollow steel pipe of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure after the hollow steel pipe of the structure of the present invention is removed;

[0025] Figure 7 for Figure 6 The enlarged structural diagram at B in the middle;

[0026] Figure 8 It is a partial cross-sectional view of the structure of the present invention;

[0027] Fig. 9 for Figure 8 Enlarged structural diagram at point C in the middle.

[0028] In the figure: 1. water stop sleeve; 2. concrete raft; 3. hollow steel pipe; 4. drain outlet; 5. drain pipe; 6. positioning rod; 7. sealing plate; 8. flexible gasket; 9. threaded ring; 10. annular steel ring; 11. threaded cover; 12. fixing rod; 13. first welding point; 14. second welding point; 15. mounting plate; 16. filter screen; 17. limiting ring; 18. fixing nut; 19. damping ring; 20. limiting plate; 21. moving plate; 22. limiting screw; 23. support plate; 24. lifting plate; 25. bottom plate; 26. reset spring; 27. cleaning plate; 28. cleaning scraper. Detailed Implementation Modes

[0029] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, and are only used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1

[0031] Please refer to Figures 1 to 9 , the present invention provides a technical solution: a new type of closed device for basement dewatering wells. The new type of closed device for basement dewatering wells includes: a water stop casing 1, and the water stop casing 1 is fixedly connected in a concrete raft 2;

[0032] A hollow steel pipe 3, a drain port 4 is opened on the side surface of the hollow steel pipe 3, a drain pipe 5 is inserted into the hollow steel pipe 3, a positioning rod 6 is arranged at the bottom of the hollow steel pipe 3, a sealing plate 7 is arranged at the bottom of the positioning rod 6, and a flexible gasket 8 and a threaded ring 9 are arranged on the surface of the sealing plate 7;

[0033] An annular steel ring 10, and a threaded cover 11 is arranged at the bottom of the annular steel ring 10;

[0034] First, the annular steel ring 10 is sleeved on the hollow steel pipe 3, then the drain pipe 5 is inserted into the hollow steel pipe 3, and the drain pipe 5 is connected to a water pump for subsequent pumping. The annular steel ring 10 is moved to the water stop casing 1 and fully welded and fixed. After the annular steel ring 10 is welded, the hollow steel pipe 3 is lifted to the position of the threaded cover 11, and the hollow steel pipe 3 is rotated to make the threaded ring 9 at the lower part of the positioning rod 6 tightly fit with the threaded cover 11. Since a flexible gasket 8 is arranged between the threaded ring 9 and the threaded cover 11 and the pressure generated by groundwater is from bottom to top, the greater the water pressure on the plugging part, the tighter the plugging part. Finally, the surface of the positioning rod 6 and the inner ring of the annular steel ring 10 are welded to increase the sealing performance and eliminate the potential leakage hazard.

[0035] Embodiment 2

[0036] On the basis of Embodiment 1, in order to facilitate the fixation of the hollow steel pipe 3 in the water stop casing 1, a limiting plate 20 is provided. A fixing nut 18 is fixedly connected to the surface of a limiting ring 17. A limiting plate 20 and a moving plate 21 are arranged on the side surface of the fixing nut 18. The limiting plate 20 is in a square plate-like structure. A threaded hole is opened on the surface of the limiting plate 20, and a limiting screw rod 22 is screwed in the threaded hole. One end of the limiting screw rod 22 is provided with a support plate 23. The support plate 23 is in an overall "C"-shaped plate-like structure, and the support plate 23 is clamped on the upper surface of the water stop casing 1;

[0037] During use, first, according to the height of the water-stop casing 1, the limit screw rod 22 can be directly rotated, so that the height of the support plate 23 can be adjusted. Then, the hollow steel pipe 3 can be inserted into the water-stop casing 1, and the "C"-shaped support plate 23 can be clamped on the surface of the water-stop casing 1, so as to fix the hollow steel pipe 3. The setting of the limit plate 20 also facilitates the hollow steel pipe 3 to be located at the central position of the water-stop casing 1.

[0038] A cleaning plate 27 is provided to facilitate the cleaning of sundries attached to the surface of the filter screen 16. The cleaning plate 27 is arranged on the inner side of the lifting plate 24. The cleaning plate 27 is in the shape of a square plate. The length of the long side of the side surface of the cleaning plate 27 is the same as the length of the long side of the side surface of the mounting plate 15. A cleaning scraper 28 is arranged on the inner side surface of the cleaning plate 27. The cleaning scraper 28 is made of rubber material. The cleaning scraper 28 is in contact with the surface of the filter screen 16. A square opening is formed on the surface of the moving plate 21. The lifting plate 24 is inserted into the square opening. The lifting plate 24 is slidably connected with the square opening. The lifting plate 24 is in the shape of a square plate. A bottom plate 25 is arranged on the surface of the lifting plate 24. A return spring 26 is sleeved on the surface of the lifting plate 24. One end of the return spring 26 is fixedly connected to the bottom of the bottom plate 25, and the other end of the return spring 26 is fixedly connected to the surface of the moving plate 21. The moving plate 21 is integrally in the shape of a square plate;

[0039] During use, first, the setting of the filter screen 16 can avoid the problem that larger sundries in the water enter the inside of the hollow steel pipe 3 and block the drain pipe 5. Then, the filter screen 16 can be used to play a protective role. When there are较多 sundries attached to the surface of the filter screen 16 and affect drainage, first, the lifting plate 24 can be directly pressed down, so that the cleaning plate 27 can move downward. The cleaning scraper 28 can be used to clean the sundries attached to the surface of the filter screen 16. Then, the setting of the return spring 26 facilitates the automatic reset of the cleaning plate 27. The fact that the lifting plate 24 is in the shape of a square plate also avoids the problem that the lifting plate 24 rotates in the square opening.

[0040] Embodiment Three

[0041] On the basis of the second embodiment, in order to facilitate the use of the drain pipe 5, a limit ring 17 is provided, the limit ring 17 is provided in the hollow steel pipe 3, a fixing nut 18 is provided on the surface of the limit ring 17, the drain pipe 5 passes through the fixing nut 18 and the limit ring 17, the outer ring surface of the limit ring 17 is provided with a thread, the limit ring 17 is screwed in the hollow steel pipe 3 by the thread provided on the outer ring surface, a damping ring 19 is provided on the inner ring surface of the limit ring 17, the damping ring 19 is provided in multiple groups, and the multiple groups of damping rings 19 are equidistantly arranged linearly about the inner side surface of the limit ring 17, the damping ring 19 is made of rubber, a mounting plate 15 is provided on the surface of the drain outlet 4, a through hole is provided on the side of the mounting plate 15, a filter screen 16 is provided in the through hole, the mounting plate 15 is fixedly connected to the surface of the drain outlet 4 by bolts, the filter screen 16 covers the drain outlet 4, and one end of the drain pipe 5 is located on the side of the drain outlet 4;

[0042] When in use, first pass the drain pipe 5 through the fixing nut 18 and the limiting ring 17, and then after the drain pipe 5 is inserted into the hollow steel pipe 3, the fixing nut 18 can be rotated to fix the limiting ring 17 inside the hollow steel pipe 3, and then the multiple groups of damping rings 19 arranged in the limiting ring 17 can increase the friction force on the surface of the drain pipe 5, so that the drain pipe 5 can be stably fixed inside the hollow steel pipe 3, and then the other end of the drain pipe 5 is connected to the water pump to cooperate with the drain outlet 4 to pump water more conveniently.

[0043] In order to facilitate sealing after the water is pumped out, an annular steel ring 10 is provided, a fixing rod 12 is provided on the surface of the positioning rod 6, the fixing rod 12 is inserted into the hollow steel pipe 3, the sealing plate 7 is fixedly connected to the bottom of the positioning rod 6, the sealing plate 7 is a circular plate-shaped structure, the flexible gasket 8 is fixedly connected to the surface of the sealing plate 7, the flexible gasket 8 is an annular plate-shaped structure, the threaded ring 9 is fixedly connected to the surface of the sealing plate 7, the positioning rod 6 is welded and fixed to the bottom of the hollow steel pipe 3, the threaded ring 9 is threadedly connected to the threaded cover 11, the threaded cover 11 is an annular plate-shaped structure, the annular steel ring 10 is welded and fixed to the inner ring surface of the water stop sleeve 1 through a first welding point 13, the side of the positioning rod 6 can be welded to the inner ring surface of the annular steel ring 10 through a second welding point 14, one end of the drain pipe 5 is inserted into the hollow steel pipe 3, and the other end of the drain pipe 5 is connected to the water pump;

[0044] During use, after the water is pumped out, the drain pipe 5 is first pulled out, and then the hollow steel pipe 3 can be pulled upward, and then the hollow steel pipe 3 can be rotated in cooperation with the fixing nut 18, so that the threaded ring 9 and the threaded cover 11 can be threadedly connected, and then the flexible gasket 8 can be squeezed through the threaded cover 11, so as to increase the connection sealing between the threaded ring 9 and the threaded cover 11, and then the hollow steel pipe 3 is separated from the positioning rod 6, and the side surface of the positioning rod 6 is welded to the inner ring surface of the annular steel ring 10 through the second welding point 14.

[0045] In actual use, first, the annular steel ring 10 is sleeved on the hollow steel pipe 3, and then the drain pipe 5 is inserted into the hollow steel pipe 3. After the drain pipe 5 is connected to the water pump for subsequent pumping, the annular steel ring 10 is moved to the water stop sleeve 1 and fully welded and fixed. After the welding of the annular steel ring 10 is completed, the hollow steel pipe 3 is lifted to the threaded cover 11, and the hollow steel pipe 3 is twisted to make the threaded ring 9 at the lower part of the positioning rod 6 fit tightly with the threaded cover 11. Because a flexible gasket 8 is arranged between the threaded ring 9 and the threaded cover 11 and the pressure generated by groundwater is from bottom to top, the greater the water pressure on the sealing part, the tighter the sealing part is. Finally, the surface of the positioning rod 6 is welded to the inner ring of the annular steel ring 10 to increase the sealing performance and eliminate the risk of leakage.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of closing device for a basement drainage well, characterized by: The novel closed device for a basement dewatering well includes: a water stop casing (1), and the water stop casing (1) is fixedly connected in a concrete raft slab (2); a hollow steel pipe (3), a drain port (4) is formed on the side surface of the hollow steel pipe (3), a drain pipe (5) is inserted into the hollow steel pipe (3), a positioning rod (6) is arranged at the bottom of the hollow steel pipe (3), a sealing plate (7) is arranged at the bottom of the positioning rod (6), and a flexible gasket (8) and a threaded ring (9) are arranged on the surface of the sealing plate (7); an annular steel ring (10), and a threaded cover port (11) is arranged at the bottom of the annular steel ring (10).

2. A novel sealing device for a basement drainage well according to claim 1, characterized in that: A fixing rod (12) is arranged on the surface of the positioning rod (6), the fixing rod (12) is inserted into the hollow steel pipe (3), the sealing plate (7) is fixedly connected to the bottom of the positioning rod (6), the sealing plate (7) is in a circular plate structure, the flexible gasket (8) is fixedly connected to the surface of the sealing plate (7), and the flexible gasket (8) is in an annular plate structure.

3. A novel sealing device for a basement drainage well according to claim 1, characterized in that: The threaded ring (9) is fixedly connected to the surface of the sealing plate (7), the positioning rod (6) is fixedly welded to the bottom of the hollow steel pipe (3), the threaded ring (9) is threadedly connected to the threaded cover port (11), the threaded cover port (11) is in an annular plate structure, and the annular steel ring (10) is fixedly welded to the inner ring surface of the water stop casing (1) through a first welding point (13).

4. A novel sealing device for a basement drainage well according to claim 1, characterized in that: The side surface of the positioning rod (6) can be welded to the inner ring surface of the annular steel ring (10) through a second welding point (14), one end of the drain pipe (5) is inserted into the hollow steel pipe (3), and the other end of the drain pipe (5) is connected to a water pump.

5. The novel sealing device for a basement drainage well according to claim 1 is characterized by: An installation plate (15) is arranged on the surface of the drain port (4), through holes are formed in the side surface of the installation plate (15), a filter net (16) is arranged in the through holes, the installation plate (15) is fixedly connected to the surface of the drain port (4) by bolts, the filter net (16) covers the drain port (4), and one end of the drain pipe (5) is located on the side of the drain port (4).

6. A novel sealing device for a basement drainage well according to claim 1, characterized in that: A limiting ring (17) is arranged in the hollow steel pipe (3), a fixing nut (18) is arranged on the surface of the limiting ring (17), the drain pipe (5) passes through the fixing nut (18) and the limiting ring (17), external threads are formed on the outer ring surface of the limiting ring (17), the limiting ring (17) is screwed into the hollow steel pipe (3) through the external threads formed on the outer ring surface, damping rings (19) are arranged on the inner ring surface of the limiting ring (17), multiple groups of damping rings (19) are linearly arranged at equal intervals on the inner side surface of the limiting ring (17), and the damping rings (19) are made of rubber.

7. A novel sealing device for a basement drainage well according to claim 6, characterized in that: The fixing nut (18) is fixedly connected to the surface of the limiting ring (17), a limiting plate (20) and a moving plate (21) are arranged on the side surface of the fixing nut (18), the limiting plate (20) is in a square plate structure, threaded holes are formed in the surface of the limiting plate (20), a limiting screw rod (22) is screwed into the threaded holes, a support plate (23) is arranged at one end of the limiting screw rod (22), the support plate (23) is in an overall "C"-shaped plate structure, and the support plate (23) is clamped on the upper surface of the water stop casing (1).

8. A novel sealing device for a basement drainage well according to claim 7, characterized in that: The surface of the movable plate (21) is provided with a square opening, into which a lifting plate (24) is inserted, and the lifting plate (24) is slidably connected to the square opening. The lifting plate (24) is in a square plate-like structure, and a bottom plate (25) is arranged on the surface of the lifting plate (24). A return spring (26) is sleeved on the surface of the lifting plate (24), one end of the return spring (26) is fixedly connected to the bottom of the bottom plate (25), and the other end of the return spring (26) is fixedly connected to the surface of the movable plate (21), and the movable plate (21) as a whole is in a square plate-like structure.

9. A novel sealing device for a basement drainage well according to claim 8, characterized in that: The inner side of the lifting plate (24) is provided with a cleaning plate (27), which is in a square plate structure. The length of the long side of the cleaning plate (27) is the same as the length of the long side of the mounting plate (15). The inner side of the cleaning plate (27) is provided with a cleaning scraper (28), which is made of rubber material and is in contact with the surface of the filter screen (16).

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