Wall-penetrating waterproof sleeve

Abstract

The utility model belongs to the technical field of water supply and drainage, and particularly discloses a through-wall waterproof sleeve. The utility model provides a combined waterproof sleeve comprising an inner pipe and an outer pipe. The outer pipe is pre-buried during wall pouring, and after the inner pipe and the municipal pipeline are connected and combined, the whole and the outer pipe are fixedly assembled on site through flanges and bolts. According to the mode, the municipal pipeline and the inner pipe are prefabricated into a whole before installation, the construction condition is optimized, and the construction difficulty is reduced. And the sealing effect of the municipal pipe and the inner pipe can be visually detected before installation, and the situation that a gap between the municipal pipe and the inner pipe is not tightly blocked is reduced. The device is suitable for being popularized and used in the through-wall connection process of the water conveying pipeline entering the reservoir.

Description

Technical Field

[0001] The utility model belongs to the technical field of water supply and drainage, and specifically discloses a wall-penetrating waterproof casing. Background Art

[0002] In urban water supply and drainage projects, when pipes pass through the walls of buildings (structures), rigid or flexible connection methods should be set according to local earthquake fortification requirements and actual project needs. The existing process mainly uses pre-buried rigid / flexible waterproof casings and fills various waterproof materials between the pipes and the waterproof casings for sealing. However, this process involves a wide variety of waterproof casings, which increases the prefabrication cost and installation difficulty, and is difficult to construct in a small space. Especially when using pipes with concave and convex outer walls (such as carat pipes), it is easy for gaps to be loosely sealed, resulting in water leakage, which seriously affects the construction quality and progress.

[0003] Existing documents disclose that an inner tube is prefabricated in a waterproof casing body, and a flexible seal is used between the casing body and the inner tube, which can effectively resist pipeline leakage caused by uneven pipeline settlement. The disadvantage is that it can only be applied to flexible pipeline connections. If it is a rigid pipeline, the gap between the inner tube and the rigid pipeline is difficult to be blocked, and the on-site installation of the flexible seal of such a device is difficult. Utility Model Content

[0004] In order to solve the technical problems listed in the background technology, the utility model provides a wall-penetrating waterproof casing. The specific technical solution is as follows:

[0005] A wall-penetrating waterproof casing comprises an outer tube, an inner tube, a waterproof wing ring, two retaining rings, a filling slurry and a plugging material which fit each other. The outer tube, the inner tube, the waterproof wing ring and the two retaining rings are on the same axis, and the axis is perpendicular to the wall through which the water pipeline passes; the outer tube and the inner tube are fitted with a gap, and flanges which can be fixed to each other by bolts are extended at the same end, and the docking planes of the waterproof wing ring, the two retaining rings and the flange are perpendicular to the axis; the waterproof wing ring is integrated with the outer wall of the outer tube and embedded in the wall; the inner tube is fitted outside the water pipeline, and the gap formed therebetween is closed by the plugging material at both ends, and the filling slurry is filled in the middle, and the filling slurry is separated from the plugging materials at both ends by retaining rings respectively, and a through hole for the filling slurry to enter and exit is respectively provided at the upper and lower parts of the middle part of the inner tube.

[0006] Preferably, when the water pipeline is a rigid pipe, the filling slurry is asbestos cement, and when the water pipeline is a flexible pipe, the filling slurry is a flexible polyurethane grouting material.

[0007] Preferably, the main body of the sealing material is asphalt hemp, and the surface is filled with sealing paste.

[0008] Preferably, the maximum gap between the inner tube and the outer tube does not exceed 5 mm.

[0009] Preferably, the through hole at the lower part of the inner tube is blocked and coated with acrylic modified epoxy glue after the filling slurry solidifies.

[0010] Preferably, the sealing paste is a polysulfide waterproof sealing paste.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] (1) The combined multifunctional waterproof casing provided by the utility model patent includes an inner and outer double tube. The outer tube is pre-buried during the wall casting, and after the inner tube is connected and combined with the municipal pipeline, the whole is fixed and assembled on site with the outer tube through flanges and bolts. This method prefabricates the municipal pipeline and the inner tube into a whole before installation, optimizes the construction conditions, and reduces the difficulty of construction. In addition, the sealing effect of the municipal pipeline and the inner tube can be visually detected before installation, reducing the situation where the gap between the two is not tightly sealed.

[0013] (2) The combined multifunctional waterproof casing provided in the utility model patent is suitable for rigid and flexible connections. During construction, different types of filling slurries can be selected according to actual conditions, thereby reducing the prefabrication cost and construction and installation difficulty of different types of waterproof casings.

[0014] (3) The filling material between the municipal pipe and the inner pipe in the utility model patent is a liquid solidified slurry, which can be applied to various types of pipes, such as pipes with concave and convex outer walls (such as carat pipes). This method can reduce the phenomenon of loose sealing of gaps and water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of a wall-penetrating waterproof casing in an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the assembly of the inner tube of the wall-penetrating waterproof casing and the municipal pipeline in the embodiment of the utility model;

[0017] Figure 3 This is a structural diagram of the outer tube of the wall-penetrating waterproof casing in the embodiment of the utility model;

[0018] Figure markings: 1-outer pipe; 2-inner pipe; 3-municipal pipeline; 4-wall; 5-waterproof wing ring; 6-filling slurry; 7-retaining ring; 8-asphalt hemp fiber; 9-polysulfide waterproof sealing paste; 10-lower grouting hole; 11-upper grouting hole; 12-inner pipe flange; 13-outer pipe flange; 14-screw; 15-nut. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on this embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] refer to Figure 1-3 The present embodiment provides a wall-penetrating waterproof casing, comprising an outer tube 1, an inner tube 2, a waterproof wing ring 5, two retaining rings 7, a filling slurry 6 and a plugging material that fits together. The outer tube 1, the inner tube 2, the waterproof wing ring 5 and the two retaining rings 7 are on the same axis, and the axis is perpendicular to the wall through which the municipal pipeline 3 (i.e., the water pipeline in the utility model) passes; the outer tube 1 and the inner tube 2 are clearance-matched, and the same end extends out an inner tube flange 12 and an outer tube flange 13 that can be fixed to each other by a screw 14 and a nut 15. The waterproof wing ring 5, two retaining rings 7, and all flange docking planes are perpendicular to the axial line. The waterproof wing ring 5 is consolidated into an integral whole with the outer wall of the outer tube 1 and embedded in the wall. The inner tube 2 is sleeved outside the municipal pipeline 3, and the gap formed therebetween is closed by the sealing material at both ends, and the middle is filled with filling slurry 6. The filling slurry 6 is separated from the sealing materials at both ends by retaining rings 7 respectively. A through hole for the filling slurry to enter and exit is respectively provided on the upper and lower parts of the middle part of the inner tube 2, namely an upper grouting hole 11 and a lower grouting hole 10.

[0021] As attached Figure 3 As shown, the new outer tube 1 includes a waterproof wing ring 5 and an outer tube flange 12. When the wall 4 is poured, the outer tube 1 is pre-buried inside the wall 4, wherein the waterproof wing ring 5 is welded to the outside of the outer tube 1 to ensure a reliable connection between the outer tube 1 and the wall 4, achieving the effect of waterproofing; the outer tube flange 12 is arranged on the inner side of the wall 4, which is convenient for subsequent assembly with the inner tube 2.

[0022] As attached Figure 2As shown, after the municipal pipeline type and connection method are determined, the new inner pipe 2 and the municipal pipeline 3 are pre-assembled. The inner pipe 2 includes a lower grouting hole 10, an upper grouting hole 11, and an inner pipe flange 13. During the pre-assembly, the municipal pipeline 3 is inserted into the inner pipe 2, and two retaining rings 7 are arranged between the inner pipe 2 and the municipal pipeline 3 along the cross-sectional direction of the inner pipe 2. An annular cavity is formed between the two retaining rings 7. According to the pipeline connection method, the corresponding filling slurry 6 is selected (if the municipal pipeline is a flexible connection, a flexible polyurethane grouting material is selected; if the municipal pipeline is a rigid connection, an asbestos cement slurry is selected, and the proportion, maintenance, and protection of the asbestos cement should comply with the requirements of GB50268-2008). The filling slurry 6 is injected into the annular cavity under high pressure (the pressure value is 0.1Mpa-1.0Mpa). The filling slurry 6 is injected from the lower grouting hole 10. When the filling slurry 6 emerges from the upper grouting hole 11, it indicates that the filling slurry 6 has filled the inside of the annular cavity, and the grouting is stopped; after the filling slurry 6 solidifies, the lower grouting hole 10 is polished and polished to facilitate the subsequent assembly with the outer pipe, and the lower grouting hole 10 is sealed with acrylic modified epoxy glue; if it is found that the inside of the annular cavity is still not filled after the filling slurry 6 solidifies, the filling slurry 6 can be continuously replenished from the upper grouting hole 11.

[0023] As attached Figure 1 As shown, asphalt hemp 8 and polysulfide waterproof sealant 9 are respectively filled on the outside of the retaining ring 7 as plugging materials to play the role of anti-seepage and waterproof. After the inner pipe 2 and the municipal pipeline 3 are pre-assembled into a whole, they are installed and combined with the outer pipe 1 pre-buried in the wall 4. During assembly, the inner pipe flange 13 is aligned with the through hole of the outer pipe flange 12, and the inner pipe 2 and the outer pipe 1 are fastened with screws 14 and nuts 15, and the gap between the inner and outer pipes is ensured not to exceed 5mm, and the installation gap is caulked with polysulfide waterproof sealant 9 to ensure its anti-seepage and waterproof effect.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wall-penetrating waterproof casing, characterized in that: It includes an outer tube, an inner tube, a waterproof wing ring, two retaining rings, a filling slurry and a sealing material that fit each other. The outer tube, the inner tube, the waterproof wing ring and the two retaining rings are on the same axis, and the axis is perpendicular to the wall through which the water pipeline passes; the outer tube and the inner tube are matched with each other in a clearance, and flanges that can be fixed to each other by bolts are extended at the same end, and the docking planes of the waterproof wing ring, the two retaining rings and the flange are perpendicular to the axis; the waterproof wing ring is consolidated into one with the outer wall of the outer tube and embedded in the wall; the inner tube is fitted outside the water pipeline, and the gap formed therebetween is closed by the sealing material at both ends, and the filling slurry is filled in the middle, and the filling slurry is separated from the sealing materials at both ends by retaining rings respectively, and a through hole is provided at the upper and lower parts of the middle part of the inner tube for the filling slurry to enter and exit.

2. A wall-penetrating waterproof casing as claimed in claim 1, characterized in that: When the water pipeline is a rigid pipe, the filling slurry is asbestos cement; when the water pipeline is a flexible pipe, the filling slurry is a flexible polyurethane grouting material.

3. A wall-penetrating waterproof casing as claimed in claim 2, characterized in that: The main body of the plugging material is asphalt hemp, and the surface is filled with sealing paste.

4. A wall-penetrating waterproof casing as claimed in claim 3, characterized in that: The maximum gap between the inner tube and the outer tube shall not exceed 5mm.

5. A wall-penetrating waterproof casing as claimed in claim 4, characterized in that: The through hole at the lower part of the inner tube is blocked and coated with acrylic modified epoxy glue after the filling slurry solidifies.

6. A wall-penetrating waterproof casing as claimed in claim 5, characterized in that: The sealing paste is a polysulfide waterproof sealing paste.

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