Municipal concrete prefabricated well chamber connecting sewage pipeline anti-leakage device

Abstract

The utility model relates to the technical field of pipeline installation, in particular to a municipal anti-leakage device for connecting a concrete prefabricated well chamber with a sewage pipeline, which comprises the prefabricated well chamber and the sewage pipeline, a round hole is formed in the prefabricated well chamber in a penetrating manner, and an open ridge platform ring groove is formed in the inner side wall of the round hole; the end of the sewage pipeline is placed in the ridge annular groove, the outer diameter of the sewage pipeline is larger than the diameter of the round hole, the outer diameter of the sewage pipeline is smaller than the diameter of the ridge annular groove, the end of the sewage pipeline abuts against the inner bottom wall of the ridge annular groove, and a formwork structure arranged on the sewage pipeline in a sleeving mode is fixed to the side wall of the prefabricated well chamber. An annular grouting space is formed among the ridge platform annular groove, the outer side wall of the sewage pipeline and the formwork structure. The strength of the connecting position of the prefabricated well chamber and the sewage pipeline is enhanced, the sealing performance of the connecting position of the prefabricated well chamber and the sewage pipeline is guaranteed, leakage is avoided, and potential safety hazards of cracking of the sewage pipeline and even cracking of a road surface caused by differential settlement of a foundation due to leakage are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline installation, in particular to a municipal concrete prefabricated well chamber connected to a sewage pipeline anti-leakage device. Background Art

[0002] In municipal engineering, sewage pipes are often used to connect prefabricated well chambers to discharge rainwater, sewage, etc. During the construction process, a circular hole with the same outer diameter as the sewage pipe is generally reserved on the prefabricated well chamber. During installation, the sewage pipe is passed through the circular hole and a certain length is reserved on one side of the prefabricated well chamber. Then, cement mortar is applied to the position where the circular hole and the sewage pipe contact to seal it, so that the prefabricated well chamber and the sewage pipe are fixedly connected.

[0003] However, practice has shown that the existing connection method between the prefabricated well chamber and the sewage pipe has the following problems: since cement mortar is only applied to seal the position where the circular hole and the sewage pipe contact, the sewage pipe and the inside of the circular hole are only in close contact; therefore, after the prefabricated well chamber and the sewage pipe have been used for a period of time, the connection between the circular hole and the sewage pipe is prone to leakage, and even cause the foundation of the sewage pipe or the cushion layer of the sewage pipe to sink, which in turn causes the sewage pipe to crack, causing a greater risk of water seepage, and further, even causing road collapse and major quality accidents.

[0004] Therefore, it is necessary to invent a municipal concrete prefabricated well chamber connected to the sewage pipe anti-leakage device to solve the above problems. Utility Model Content

[0005] The utility model provides a municipal concrete prefabricated well chamber connection sewage pipe anti-leakage device in order to solve the problem of easy leakage at the connection point of the existing prefabricated well chamber connection sewage pipe.

[0006] The utility model is realized by adopting the following technical solutions:

[0007] A municipal concrete prefabricated well chamber connected to a sewage pipe anti-leakage device comprises a prefabricated well chamber and a sewage pipe, wherein a circular hole is formed through the prefabricated well chamber, an open step ring groove is formed on the inner wall of the circular hole, an end of the sewage pipe is placed in the step ring groove, an outer diameter of the sewage pipe is larger than the diameter of the circular hole, an outer diameter of the sewage pipe is smaller than the diameter of the step ring groove, an end of the sewage pipe abuts against an inner bottom wall of the step ring groove, a template structure sleeved on the sewage pipe is fixed on the side wall of the prefabricated well chamber, and an annular grouting space is formed between the step ring groove, the outer wall of the sewage pipe and the template structure.

[0008] Furthermore, the template structure includes an upper template and a lower template fixedly attached to the prefabricated well chamber, the bottom end of the upper template and the top end of the lower template are both provided with semicircular mounting grooves matching the sewage pipe, the top end of the upper template and the bottom end of the lower template are both fixed with fixed keels, a grouting hole is opened through the upper template, the grouting hole is connected to the grouting space, and a locking structure is arranged between the upper template and the lower template.

[0009] Furthermore, the locking structure includes a locking rod fixed to the upper part of the lower template, the lower part of the upper template is fixedly connected to a rotating rod, the end of the rotating rod is rotatably connected to a locking strip, and the lower part of the locking strip is provided with a locking groove matching the locking rod.

[0010] Furthermore, a plurality of ear plates are fixed to the left and right sides of the fixed keel and the side away from the sewage pipe, and each ear plate is provided with a bolt threadedly connected thereto and passing through the prefabricated well chamber, and nuts are screwed on both ends of the bolt.

[0011] Furthermore, a water stop is arranged between the end of the sewage pipe and the inner bottom wall of the step ring groove; and sponge strips are pasted on the inner side of the semicircular placement groove close to the grouting space.

[0012] Furthermore, the grouting space is filled with expansive waterproof mortar by a pressure pump.

[0013] The utility model has a reasonable and reliable structural design. By opening a step ring groove on the inner wall of the circular hole and installing a water stop, the waterway is extended. Then the sewage pipe is installed on the step ring groove. Then, the expansive waterproof mortar is poured into the grouting space between the step ring groove, the outer wall of the sewage pipe and the template structure. After the strength of the expansive waterproof mortar reaches the standard, the sewage pipe and the prefabricated well chamber become an integral concrete structure, which strengthens the strength of the connection between the prefabricated well chamber and the sewage pipe, ensures the sealing of the connection between the prefabricated well chamber and the sewage pipe, reduces the safety hazard of uneven foundation settlement caused by leakage, which in turn causes cracks in the sewage pipe and even road surface, thereby ensuring the service life of the prefabricated well chamber and the sewage pipe. Furthermore, the template structure has the advantages of fast and convenient installation and disassembly and can be used in a turnover manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0016] Figure 3 It is a top view schematic diagram of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the locking structure in the utility model.

[0018] In the figure: 1-prefabricated well chamber, 2-sewage pipe, 3-circular hole, 4-step ring groove, 5-grouting space, 6-upper template, 7-lower template, 8-semicircular placement groove, 9-fixed keel, 10-grouting hole, 11-locking rod, 12-rotating rod, 13-locking strip, 14-locking groove, 15-ear plate, 16-bolt, 17-nut, 18-waterstop, 19-sponge strip. DETAILED DESCRIPTION

[0019] A municipal concrete prefabricated well chamber connected to the sewage pipe leakage prevention device, as shown in the attached Figure 1 -Attached Figure 4 As shown, it includes a prefabricated well chamber 1 and a sewage pipe 2. A circular hole 3 is formed through the prefabricated well chamber 1. An open-shaped step ring groove 4 is formed on the inner wall of the circular hole 3. The end of the sewage pipe 2 is placed in the step ring groove 4. The outer diameter of the sewage pipe 2 is larger than the diameter of the circular hole 3, and the outer diameter of the sewage pipe 2 is smaller than the diameter of the step ring groove 4. The end of the sewage pipe 2 abuts against the inner bottom wall of the step ring groove 4. A template structure that is sleeved on the sewage pipe 2 is fixed on the side wall of the prefabricated well chamber 1. An annular grouting space 5 is formed between the step ring groove 4, the outer wall of the sewage pipe 2 and the template structure.

[0020] In the utility model, a step ring groove 4 is provided on the inner wall of the circular hole 3, and the sewage pipe 2 is installed on the step ring groove 4, and then the expansion type waterproof mortar is poured into the grouting space 5 between the step ring groove 4, the outer wall of the sewage pipe 2 and the template structure. After the strength of the expansion type waterproof mortar reaches the standard, the sewage pipe 2 and the prefabricated well chamber 1 become a concrete integral structure, and the strength of the connection between the prefabricated well chamber 1 and the sewage pipe 2 is strengthened. The gap between the circular hole of the existing prefabricated well chamber and the sewage pipe is very small and cannot be poured with cement mortar, but sewage can penetrate, which affects the use quality of the prefabricated well chamber over time. Compared with the existing method of only applying cement mortar to seal the position where the prefabricated well chamber and the sewage pipe are in contact, the present application fills the grouting space 5 with a fluid expansion type waterproof mortar. After the strength of the expansion type waterproof mortar reaches the standard, the sealing degree of the connection between the prefabricated well chamber 1 and the sewage pipe 2 is better, leakage is avoided, and the safety hazard of cracking of the sewage pipe 2 is reduced, thereby ensuring the service life of the prefabricated well chamber 1 and the sewage pipe 2.

[0021] As attached Figure 1As shown, the template structure includes an upper template 6 and a lower template 7 fixedly attached to the prefabricated well chamber 1, a semicircular placement groove 8 matching the sewage pipe 2 is provided at the bottom end of the upper template 6 and the top end of the lower template 7, a fixed keel 9 is fixed at the top end of the upper template 6 and the bottom end of the lower template 7, a grouting hole 10 is opened through the upper template 6, the grouting hole 10 is connected to the grouting space 5, and a locking structure is arranged between the upper template 6 and the lower template 7.

[0022] The template structure ensures the pouring and molding of the expansive waterproof mortar. The structural design of the upper template 6 and the lower template 7 facilitates installation and disassembly; the structural design of the fixed keel 9 ensures the supporting strength of the upper template 6 and the lower template 7; the structure of the semicircular placement groove 8 fits well with the outer wall of the sewage pipe 2, ensuring the closedness of the template structure; the grouting hole 10 is used to pour the expansive waterproof mortar.

[0023] As attached Figure 4 As shown, the locking structure includes a locking rod 11 fixed to the upper part of the lower template 7, a rotating rod 12 is fixedly connected to the lower part of the upper template 6, the end of the rotating rod 12 is rotatably connected to a locking strip 13, and a locking groove 14 matching the locking rod 11 is provided at the lower part of the locking strip 13.

[0024] The locking structure further strengthens the connection stability between the upper template 6 and the lower template 7. At the same time, it is simple to operate and has a stable structure. When locking is required, it is only necessary to rotate the locking strip 13 so that the locking groove 14 thereon is engaged with the locking rod 11, thereby completing the fixed connection between the upper template 6 and the lower template 7. When disassembly is required, it is only necessary to rotate the locking strip 13 so that the locking groove 14 thereon is disengaged from the locking rod 11, thereby releasing the connection between the upper template 6 and the lower template 7. Furthermore, the locking structure can be set in multiple groups.

[0025] As attached Figure 1 , Attachment Figure 2 As shown, a plurality of ear plates 15 are fixed to the left side, the right side and the side away from the sewage pipe 2 of the fixed keel 9, and each ear plate 15 is provided with a bolt 16 which is threadedly connected thereto and passes through the prefabricated well chamber 1, and nuts 17 are screwed on both ends of the bolt 16.

[0026] The structural design of the ear plate 15, the bolt 16 and the nut 17 realizes the fixed connection between the template structure and the prefabricated well chamber 1, further enhancing the structural stability of the device.

[0027] As attached Figure 2 , Attachment Figure 3 As shown, a water stop strip 18 is provided between the end of the sewage pipe 2 and the inner bottom wall of the step ring groove 4; and a sponge strip 19 is pasted on the inner side of the semicircular placement groove 8 close to the grouting space 5.

[0028] The combined structure of the step ring groove 4 and the waterstop 18 not only extends the waterway, but the waterstop 18 also improves the water-stopping effect of the connection, strengthens the sealing between the sewage pipe 2 and the step ring groove 4, and prevents leakage; the sponge strip 19 strengthens the sealing between the upper template 6 and the sewage pipe 2, and between the lower template 7 and the sewage pipe 2, to prevent leakage.

[0029] The grouting space 5 is filled with expansion type waterproof mortar by a pressure pump.

[0030] Working process: When the prefabricated well chamber 1 is manufactured, a circular hole 3 and a step ring groove 4 are reserved according to the diameter of the sewage pipe 2, so that the outer diameter of the sewage pipe 2 is larger than the diameter of the circular hole 3, and the outer diameter of the sewage pipe 2 is smaller than the diameter of the step ring groove 4; when installing the sewage pipe 2, first install the water stop belt 18 at the inner bottom end of the step ring groove 4, and tighten the end of the sewage pipe 2 to the water stop belt 18 to seal the gap between the sewage pipe 2 and the bottom end of the step ring groove 4, and then install the template structure, and at the same time, paste the sponge strip 19 on the inner side of the semicircular placement groove 8 close to the grouting space 5 to seal the gap between the upper template 6 and the sewage pipe 2, and the gap between the lower template 7 and the sewage pipe 2, and then use the bolts 16 and nuts 1 7 Fix the template structure on the outer wall of the prefabricated well chamber 1, and then rotate the locking strip 13 so that the locking groove 14 thereon is engaged with the locking rod 11, that is, the fixed connection between the upper template 6 and the lower template 7 is completed, and finally the expansion type waterproof mortar is poured into the grouting space 5 through the grouting hole 10 and using a pressure pump. After the expansion type waterproof mortar reaches a certain strength, the template structure can be removed. When disassembling, it is only necessary to rotate the locking strip 13 so that the locking groove 14 thereon is disengaged from the locking rod 11, that is, the connection between the upper template 6 and the lower template 7 is released, and then the bolts 16 and nuts 17 are loosened to release the connection between the template structure and the prefabricated well chamber 1, and the disassembly is completed. In the subsequent construction process, the template structure can be used in a turnover manner.

[0031] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] 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 municipal concrete prefabricated well chamber connected to a sewage pipe anti-leakage device, comprising a prefabricated well chamber (1) and a sewage pipe (2), characterized in that: A circular hole (3) is formed through the prefabricated well chamber (1), and an open-shaped step ring groove (4) is formed on the inner wall of the circular hole (3). The end of the sewage pipe (2) is placed in the step ring groove (4), and the outer diameter of the sewage pipe (2) is larger than the diameter of the circular hole (3), and the outer diameter of the sewage pipe (2) is smaller than the diameter of the step ring groove (4). The end of the sewage pipe (2) abuts against the inner bottom wall of the step ring groove (4). A template structure sleeved on the sewage pipe (2) is fixed on the side wall of the prefabricated well chamber (1), and an annular grouting space (5) is formed between the step ring groove (4), the outer wall of the sewage pipe (2) and the template structure.

2. The anti-leakage device for connecting a municipal concrete prefabricated well chamber to a sewage pipe according to claim 1, characterized in that: The template structure comprises an upper template (6) and a lower template (7) fixedly attached to the prefabricated well chamber (1); the bottom end of the upper template (6) and the top end of the lower template (7) are both provided with a semicircular placement groove (8) matching the sewage pipe (2); the top end of the upper template (6) and the bottom end of the lower template (7) are both fixed with a fixed keel (9); a grouting hole (10) is provided through the upper template (6); the grouting hole (10) is connected to the grouting space (5); and a locking structure is provided between the upper template (6) and the lower template (7).

3. The anti-leakage device for connecting a municipal concrete prefabricated well chamber to a sewage pipe according to claim 2, characterized in that: The locking structure comprises a locking rod (11) fixed to the upper part of the lower template (7); a rotating rod (12) is fixedly connected to the lower part of the upper template (6); the end of the rotating rod (12) is rotatably connected to a locking strip (13); and a locking groove (14) matching the locking rod (11) is provided at the lower part of the locking strip (13).

4. The anti-leakage device for connecting a municipal concrete prefabricated well chamber to a sewage pipe according to claim 2, characterized in that: A plurality of ear plates (15) are fixed to the left side, the right side and the side away from the sewage pipe (2) of the fixed keel (9), and each ear plate (15) is provided with a bolt (16) threadedly connected thereto and penetrating the prefabricated well chamber (1), and nuts (17) are screwed onto both ends of the bolt (16).

5. The anti-leakage device for connecting a municipal concrete prefabricated well chamber to a sewage pipe according to claim 2, characterized in that: A water stop strip (18) is provided between the end of the sewage pipe (2) and the inner bottom wall of the step ring groove (4); and a sponge strip (19) is adhered to the inner side of the semicircular placement groove (8) close to the grouting space (5).

6. The anti-leakage device for connecting a municipal concrete prefabricated well chamber to a sewage pipe according to claim 1, characterized in that: The grouting space (5) is filled with expansion type waterproof mortar by means of a pressure pump.

Images