Fixed plugging device for raft dewatering well casing

Abstract

The utility model discloses a fixed plugging device for a raft dewatering well casing, which is characterized in that a steel sleeve sleeved on the outer side of the dewatering well casing is arranged on a cushion layer, and a steel cover plate for plugging the dewatering well casing is arranged on the steel sleeve; a lock catch is arranged on the top of the outer side wall of the steel sleeve, an outer water stop steel ring is arranged in the middle of the outer side wall of the steel sleeve, a waterproof layer is arranged on the outer side wall of the steel sleeve in the circumferential direction, an inner water stop steel ring is arranged on the upper portion of the inner side wall of the steel sleeve, and a water stop sleeve is arranged on the inner water stop steel ring. An outer side plate and an inner side cylinder are arranged on the lower portion of the steel cover plate, the outer side plate abuts against the inner side wall of the steel sleeve, and the inner side cylinder abuts against the inner side wall of the water stop sleeve. By arranging the steel sleeve, the height of the dewatering well casing can be conveniently increased, and by arranging the steel cover plate, concrete can be conveniently prevented from flowing into the steel sleeve, so that the concrete of the raft plate cannot flow into the dewatering well casing, two-layer plugging is formed, the sealing performance is good, and the protection on the dewatering well casing is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of precipitation well pipe construction, and particularly relates to a fixing and plugging device for a raft precipitation well pipe. Background Technique

[0002] With the continuous development of construction engineering technology, the excavation depth of foundation pits is increasing day by day. Especially in construction areas with a high groundwater level, in order to ensure the safety and stability of the foundation pit support structure system, conventional measures include setting precipitation wells and continuously draining water to lower the groundwater level. When the construction of the main building is completed, effectively plugging the precipitation wells becomes an important and highly technical task. If not handled properly, leakage will seriously affect the normal use and service life of the building.

[0003] When the groundwater level in the foundation pit is high, the formation permeability coefficient is large, and the groundwater resources are relatively rich, and it is necessary to plug the precipitation well inside the raft, the conventional method is to connect the top of the steel casing with a flange and a blind plate using bolts, or to weld a steel plate inside the steel casing for plugging. However, the welding method for plugging is slow and cannot quickly plug the situation where the groundwater rises rapidly; the connection and plugging of the flange and the blind plate with bolts have poor sealing performance and may have the risk of leakage. Therefore, in the case of a rapid rise in groundwater level, a simple, fast, well-sealed, safe and reliable precipitation well pipe plugging tool is needed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a fixing and plugging device for a raft precipitation well pipe aiming at the deficiencies in the above-mentioned prior art. The device has a simple structure and reasonable design. By setting a steel casing, it is convenient to extend the height of the precipitation well pipe. By setting a steel cover plate, it is convenient to block the concrete from flowing into the steel casing, so that the concrete of the raft cannot flow into the precipitation well pipe, and a two-layer plugging is formed, with good sealing performance, effectively avoiding the problem of later water seepage, improving the protection of the precipitation well pipe, and having strong practicability.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a fixing and plugging device for a raft precipitation well pipe, a precipitation well pipe is buried in the foundation, and a cushion layer is laid on the foundation. It is characterized in that: a steel casing sleeved outside the precipitation well pipe is arranged on the cushion layer, and a steel cover plate for plugging the precipitation well pipe is arranged on the steel casing;

[0006] A hinge seat is arranged at the top of the outer side wall of the steel casing, a lock is arranged on the hinge seat, an outer water stop steel ring is arranged in the middle of the outer side wall of the steel casing, a waterproof layer is arranged circumferentially on the outer side wall of the steel casing, an inner water stop steel ring is arranged on the upper part of the inner side wall of the steel casing, and a water stop sleeve is arranged on the inner water stop steel ring;

[0007] The top of the steel cover plate is provided with clamping posts for the latch to be clamped. The lower part of the steel cover plate is provided with an outer side plate and an inner cylinder. The outer side plate abuts against the inner side wall of the steel casing, and the inner cylinder abuts against the inner side wall of the water stop casing. Both the steel cover plate and the inner cylinder are connected to the inner water stop steel ring by first bolts.

[0008] For the above-mentioned fixed plugging device for raft dewatering well pipes, it is characterized in that: a base is arranged at the bottom of the outer side wall of the steel casing, and the base is fixed on the cushion layer by second bolts.

[0009] For the above-mentioned fixed plugging device for raft dewatering well pipes, it is characterized in that: a waterproof strengthening layer is further arranged between the steel casing and the waterproof layer, and the waterproof strengthening layer covers above the base and the second bolts.

[0010] For the above-mentioned fixed plugging device for raft dewatering well pipes, it is characterized in that: the waterproof layer covers the cushion layer, the steel casing and the outer water stop steel ring.

[0011] For the above-mentioned fixed plugging device for raft dewatering well pipes, it is characterized in that: a handle is arranged at the center of the top of the steel cover plate, and the diameter of the steel cover plate is larger than the diameter of the upper end of the steel casing.

[0012] For the above-mentioned fixed plugging device for raft dewatering well pipes, it is characterized in that: a rubber gasket is arranged between the inner cylinder and the inner water stop steel ring.

[0013] The utility model has the following advantages compared with the prior art:

[0014] 1. The operation of the utility model is simple and fast. By setting the steel casing, it is convenient to extend the height of the dewatering well pipe, so that the concrete of the raft cannot flow into the dewatering well pipe, keeping the effectiveness of the dewatering well pipe. By setting the outer water stop steel ring, it is convenient to enhance the tightness of the connection between the steel casing and the raft when pouring concrete. By setting the inner water stop steel ring, it is convenient to support the inner cylinder under the steel cover plate, and it has strong practicability.

[0015] 2. The utility model is convenient to block the concrete from flowing into the steel casing by setting the steel cover plate. By setting the outer side plate, it is convenient to abut against the inner side wall of the steel casing and the upper part of the inner water stop steel ring to form the first layer of plugging. By setting the inner cylinder, it is convenient to abut against the inner side wall of the water stop casing and the upper part of the inner water stop steel ring to form the second layer of plugging. It has good sealing performance, effectively avoids the problem of later seepage, improves the protection and plugging of the dewatering well pipe, and is convenient for popularization and use.

[0016] In summary, the structure of the present utility model is simple and reasonably designed. By setting a steel casing, it is convenient to extend the height of the dewatering well pipe. By setting a steel cover plate, it is convenient to block the concrete from flowing into the steel casing, so that the concrete of the raft cannot flow into the dewatering well pipe, and a two-layer seal is formed, with good sealing performance, effectively avoiding the problem of later seepage, improving the protection of the dewatering well pipe, and having strong practicability.

[0017] The technical solution of the present utility model will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model.

[0019] Figure 2 is Figure 1 an enlarged view of part A of

[0020] Figure 3 is Figure 1 an enlarged view of part B of

[0021] Figure 4 is a schematic structural diagram of the steel cover plate of the present utility model.

[0022] Figure 5 is a schematic structural diagram of the steel casing of the present utility model.

[0023] DESCRIPTION OF THE REFERENCE NUMERALS:

[0024] 1 - Foundation; 2 - Dewatering well pipe; 3 - Cushion;

[0025] 4 - Raft; 5 - Steel casing; 6 - Base;

[0026] 7 - Outer water stop steel ring; 8 - Water stop casing; 9 - Inner water stop steel ring;

[0027] 10 - Hinge seat; 11 - Lock; 12 - Clamping post;

[0028] 13 - Steel cover plate; 14 - Handle; 15 - Outer side plate;

[0029] 16 - Inner side cylinder; 17 - First bolt; 18 - Second bolt;

[0030] 19 - Waterproof layer; 20 - Waterproof strengthening layer; 21 - Rubber gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] As Figures 1 to 5 shown, a dewatering well pipe 2 is buried in the foundation 1, a cushion 3 is laid on the foundation 1, and the present utility model includes a steel casing 5 disposed on the cushion 3 and sleeved outside the dewatering well pipe 2, and a steel cover plate 13 for sealing the dewatering well pipe 2 is disposed on the steel casing 5.

[0032] A hinge seat 10 is provided at the top of the outer side wall of the steel casing 5, a latch 11 is provided on the hinge seat 10, an outer water stop steel ring 7 is provided in the middle of the outer side wall of the steel casing 5, a waterproof layer 19 is circumferentially provided on the outer side wall of the steel casing 5, an inner water stop steel ring 9 is provided at the upper part of the inner side wall of the steel casing 5, and a water stop casing 8 is provided on the inner water stop steel ring 9.

[0033] A clamping post 12 for the latch 11 to be clamped is provided at the top of the steel cover plate 13. An outer side plate 15 and an inner cylinder 16 are provided at the lower part of the steel cover plate 13. The outer side plate 15 abuts against the inner side wall of the steel casing 5, and the inner cylinder 16 abuts against the inner side wall of the water stop casing 8. Both the steel cover plate 13 and the inner cylinder 16 are connected to the inner water stop steel ring 9 by first bolts 17.

[0034] During actual use, by providing the steel casing 5, it is convenient to extend the height of the dewatering well pipe 2, so that the concrete of the raft 4 cannot flow into the dewatering well pipe 2, maintaining the effectiveness of the dewatering well pipe 2. By providing the outer water stop steel ring 7, it is convenient to enhance the tightness of the connection between the steel casing 5 and the raft 4 when pouring concrete. By providing the inner water stop steel ring 9, it is convenient to support the inner cylinder 16 at the lower part of the steel cover plate 13.

[0035] It should be noted that by providing the steel cover plate 13, it is convenient to block the concrete from flowing into the steel casing 5. By providing the outer side plate 15, it is convenient to abut against the inner side wall of the steel casing 5 and the upper part of the inner water stop steel ring 9 to form the first layer of sealing. By providing the inner cylinder 16, it is convenient to abut against the inner side wall of the water stop casing 8 and the upper part of the inner water stop steel ring 9 to form the second layer of sealing, with good sealing performance, effectively avoiding the problem of later water seepage, and improving the protection and sealing of the dewatering well pipe 2.

[0036] In this embodiment, a base 6 is provided at the bottom of the outer side wall of the steel casing 5, and the base 6 is fixed on the cushion layer 3 by second bolts 18.

[0037] During actual use, the base 6 circumferentially surrounds the bottom of the steel casing 5, which is convenient to provide support force and stability for the steel casing 5, and also enhances the tightness of the connection between the steel casing 5 and the cushion layer 3.

[0038] It should be noted that the number of the first bolts 17 and the second bolts 18 is multiple.

[0039] As Figure 3 shown, in this embodiment, a waterproof reinforcement layer 20 is further provided between the steel casing 5 and the waterproof layer 19, and the waterproof reinforcement layer 20 covers above the base 6 and the second bolts 18.

[0040] In this embodiment, the waterproof layer 19 covers the cushion layer 3, the steel casing 5, and the outer water-stop steel ring 7.

[0041] During actual use, the covering area of the waterproof layer 19 is larger than that of the waterproof reinforcement layer 20. By providing the waterproof reinforcement layer 20, it is convenient to improve the waterproof sealability at the base 6. By providing the waterproof layer 19 to cover the cushion layer 3, the steel casing 5, and the outer water-stop steel ring 7, it is convenient to protect the outer side wall of the steel casing 5 and prevent the concrete from eroding the steel casing 5 during long-term use.

[0042] In this embodiment, a handle 14 is provided at the center of the top of the steel cover plate 13, and the diameter of the steel cover plate 13 is larger than the diameter of the upper end of the steel casing 5.

[0043] During actual use, the handle 14 is cross-shaped. The cross-shaped handle 14 is arranged on the upper surface of the steel cover plate 13 through a connecting rod. By providing the handle 14, it is convenient for construction workers to pick up and install the steel cover plate 13. By providing the diameter of the steel cover plate 13 to be larger than the diameter of the upper end of the steel casing 5, it is convenient for the steel cover plate 13 to completely cover the opening at the upper end of the steel casing 5, thereby preventing the concrete from flowing into the steel casing 5.

[0044] In this embodiment, a rubber gasket 21 is provided between the inner cylinder 16 and the inner water-stop steel ring 9.

[0045] When the present utility model is specifically used, after the construction of the cushion layer 3 is completed, the steel casing 5 is sleeved outside the dewatering well pipe 2, and the steel casing 5 is fixed to the cushion layer 3 through the second bolt 18. Then, the waterproof layer 19 and the waterproof reinforcement layer 20 are constructed. After ensuring the tightness of the lower part of the steel casing 5, the concrete of the raft slab 4 is poured. When the concrete is poured to a thickness of 0.5 m - 0.7 m and there is no leakage in the steel casing 5, the steel cover plate 13 is clamped on the top of the steel casing 5 by clamping the lock catch 11 on the clamping post 12, thereby realizing the sealing of the steel casing 5 and further realizing the sealing of the dewatering well pipe 2.

[0046] The above is only a preferred embodiment of the present utility model and does not impose any limitation on the present utility model. Any simple modification, change, and equivalent structural change made to the above embodiments according to the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A fixing and plugging device for a raft dewatering well pipe. A dewatering well pipe (2) is buried in a foundation (1), and a cushion layer (3) is laid on the foundation (1). It is characterized in that: A steel sleeve (5) sleeving outside the precipitation well pipe (2) is arranged on the cushion layer (3), and a steel cover plate (13) for plugging the precipitation well pipe (2) is arranged on the steel sleeve (5); A hinge seat (10) is arranged at the top of the outer side wall of the steel sleeve (5), a lock catch (11) is arranged on the hinge seat (10), an outer water-stop steel ring (7) is arranged in the middle of the outer side wall of the steel sleeve (5), a waterproof layer (19) is arranged circumferentially on the outer side wall of the steel sleeve (5), an inner water-stop steel ring (9) is arranged at the upper part of the inner side wall of the steel sleeve (5), and a water-stop sleeve (8) is arranged on the inner water-stop steel ring (9); A clamping column (12) for the lock catch (11) to be clamped is arranged at the top of the steel cover plate (13), an outer side plate (15) and an inner cylinder (16) are arranged at the lower part of the steel cover plate (13), the outer side plate (15) abuts against the inner side wall of the steel sleeve (5), the inner cylinder (16) abuts against the inner side wall of the water-stop sleeve (8), and both the steel cover plate (13) and the inner cylinder (16) are connected to the inner water-stop steel ring (9) through first bolts (17).

2. The fixed plugging device for the raft dewatering well pipe according to claim 1, characterized in that: A base (6) is arranged at the bottom of the outer side wall of the steel sleeve (5), and the base (6) is fixed on the cushion layer (3) through a second bolt (18).

3. The fixed plugging device for the raft dewatering well pipe according to claim 2, characterized in that: A waterproof strengthening layer (20) is further arranged between the steel sleeve (5) and the waterproof layer (19), and the waterproof strengthening layer (20) covers above the base (6) and the second bolt (18).

4. The fixed plugging device for a raft dewatering well pipe according to claim 1, characterized in that: The waterproof layer (19) covers the cushion layer (3), the steel sleeve (5) and the outer water-stop steel ring (7).

5. The fixed plugging device for the raft dewatering well pipe according to claim 1, characterized in that: A handle (14) is arranged at the center of the top of the steel cover plate (13), and the diameter of the steel cover plate (13) is larger than the diameter of the upper end of the steel sleeve (5).

6. The fixed plugging device for a raft dewatering well pipe according to claim 1, characterized in that: A rubber gasket (21) is arranged between the inner cylinder (16) and the inner water-stop steel ring (9).

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