Drainage pipe pre-embedded protection device for construction of sewage treatment plant
By designing a protective shell and airbag sealing structure for quick installation, the problem of low assembly efficiency and difficult disassembly of pre-embedded drainage pipe devices in existing technologies has been solved, achieving efficient protection and convenient maintenance during the construction of sewage treatment plants.
Patent Information
- Application Number
- CN202511777626.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-03-03
AI Technical Summary
In the existing technology, the assembly efficiency of the pre-embedded protective device for drainage pipes in the construction of sewage treatment plants is low. During disassembly, the components are easily damaged due to concrete adhesion and corrosion, which affects the construction progress and subsequent maintenance and replacement.
It adopts a first protective shell and a second protective shell design, and can be quickly installed and removed through quick-release components. Combined with airbag sealing and rubber pads to isolate debris, it uses bolts to ensure stability.
It enables rapid assembly and disassembly of pre-embedded drainage pipes, preventing construction debris from entering and ensuring construction progress and ease of later maintenance.
Smart Images

Figure CN121593534A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of building construction protection technology, specifically a pre-embedded protective device for drainage pipes in the construction of sewage treatment plants. Background Technology
[0002] Drainage pipes are a key component of infrastructure used for collecting and transporting various fluids. Their core function is to achieve directional discharge and drainage of fluids, preventing water accumulation, pollution, or structural damage, and ensuring the normal operation of production, daily life, and engineering construction. During the construction of wastewater treatment plants, the pre-laying of drainage pipes is a critical step, requiring consideration of complex conditions such as high groundwater levels, highly corrosive environments, numerous construction debris, and frequent overlapping operations.
[0003] Currently, the protective shells used in existing technologies are mostly fastened with bolts or welded, which results in low assembly efficiency. Furthermore, during disassembly, components are easily damaged due to concrete adhesion and corrosion, affecting the construction progress and hindering later maintenance and replacement. Therefore, in order to address the above problems, a pre-embedded protective device for drainage pipes in sewage treatment plant construction is proposed. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a pre-embedded protective device for drainage pipes in the construction of sewage treatment plants.
[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a pre-embedded protective device for drainage pipes in the construction of a sewage treatment plant, comprising a first protective shell, a second protective shell, and a drainage pipe. The surfaces of the first and second protective shells are provided with placement holes that match the drainage pipe. The surfaces of the first protective shells are provided with a plurality of circular slots at both ends. The interior of the circular slots is provided with threaded anti-slip grooves. Limiting holes are provided on both sides of the circular slots. The bottom ends of the second protective shells are provided with a plurality of quick-release components. The quick-release assembly includes fixed posts at both ends of the bottom of the second protective shell. The number of fixed posts is equal to the number of circular slots. An installation block is fixed to the inner wall of each fixed post. A fixed ring is fixed to one side of each installation block. A collar is fixed to the surface of each fixed ring. Spring plates are provided on both sides of each collar. A limit post is fixed to one side of each spring plate. The first and second protective shells are detachably connected by the quick-release assembly and together wrap around the drain pipe.
[0006] Preferably, one end of each of the two limiting posts extends through the outside of the fixing post and matches the limiting hole.
[0007] Preferably, a rectangular groove is formed on one side of the surface of the first protective shell near the plurality of circular slots, and a first airbag is assembled inside the rectangular groove. An elongated slot is formed on the surface of the first protective shell, and a second airbag is assembled at the bottom of the elongated slot.
[0008] Preferably, a plurality of compression blocks are fixedly connected to the bottom ends of the second protective shell, the compression blocks are matched with the rectangular groove, and an air tube is provided between the first airbag and the second airbag, and a one-way valve is provided inside the air tube.
[0009] Preferably, rubber pads are provided inside the placement holes of both the first and second protective shells.
[0010] Preferably, a fixing block is provided at each of the four corners of the bottom of the first protective shell, and a bolt is provided at the bottom of the fixing block.
[0011] The beneficial effects of this invention are: This invention provides a pre-embedded protective device for drainage pipes during the construction of a sewage treatment plant. By pressing down on the second protective shell, the fixing column is inserted into the circular slot. The spring plate on the inner wall of the fixing column contracts due to the pressure from the inner wall of the circular slot. When the fixing column is inserted to a preset depth, the limiting column on one side of the spring plate is aligned with the limiting holes on both sides of the circular slot. At this time, the elastic potential energy of the spring plate is released, pushing the limiting column through the outside of the fixing column and into the limiting hole. This achieves the quick installation and disassembly of the first and second protective shells, facilitating later maintenance and replacement. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the first protective shell in this invention; Figure 3 This is a perspective view of the second protection diagram in this invention; Figure 4 This is a cross-sectional view of the second protective shell in this invention.
[0013] Legend: 1. First protective shell; 2. Second protective shell; 3. Drain pipe; 301. Circular groove; 302. Limiting hole; 303. Fixing post; 304. Mounting block; 305. Fixing ring; 306. Spring plate; 307. Limiting post; 308. Collar; 4. Extrusion block; 401. Rectangular groove; 402. First airbag; 403. Long slot hole; 404. Second airbag; 5. Fixing block; 501. Bolt. Detailed Implementation
[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0015] Specific implementation examples are given below.
[0016] Please see Figures 1-4 This invention provides a drainage pipe pre-embedded protective device for the construction of a sewage treatment plant, including a first protective shell 1, a second protective shell 2, and a drainage pipe 3. The surfaces of the first protective shell 1 and the second protective shell 2 are provided with placement holes that match the drainage pipe 3. The drainage pipe 3 to be pre-embedded is slowly placed into the placement hole of the first protective shell 1. Since the size of the placement hole matches the outer diameter of the drainage pipe 3, the lateral displacement of the drainage pipe 3 can be restricted. Several circular hole grooves 301 are provided at both ends of the surface of the first protective shell 1. The interior of the circular hole grooves 301 is provided with threaded anti-slip grooves. Limiting holes 302 are provided on both sides of the circular hole grooves 301. Several quick-release components are provided at both ends of the bottom of the second protective shell 2. The quick-release assembly includes fixing posts 303 fixedly installed at both ends of the bottom of the second protective shell 2. The number of fixing posts 303 is equal to the number of circular slots 301. Mounting blocks 304 are fixedly connected to the inner walls of the fixing posts 303. A fixing ring 305 is fixedly connected to one side of the mounting block 304. A collar 308 is fixedly connected to the surface of the fixing ring 305. Spring plates 306 are provided on both sides of the collar 308. Limiting posts 307 are fixedly connected to one side of each spring plate 306. The first protective shell 1 and the second protective shell 2 are detachably connected via the quick-release assembly, together wrapping the drain pipe 3. Holding the second protective shell 2, press the second protective shell 2 downwards so that the fixing posts 303 at both ends of its bottom align with the circular slots 301 on the surface of the first protective shell 1, causing the fixing posts 303 to insert into the circular slots 301. The threaded anti-slip grooves inside the circular slots 301 increase the contact friction between the outer wall of the fixing post 303 and the slot wall, preventing the fixing posts 303 from loosening due to slight vibration after insertion. During the process, the spring plate 306 on its inner wall contracts towards the collar 308 due to the pressure from the inner wall of the circular groove 301. When the fixing post 303 is inserted to the preset depth, one end of the two limiting posts 307 penetrates the outer side of the fixing post 303 and matches the limiting hole 302. The limiting post 307 on one side of the spring plate 306 is exactly aligned with the limiting holes 302 on both sides of the circular groove 301. At this time, the elastic potential energy of the spring plate 306 is released, pushing the limiting post 307 to penetrate the outer side of the fixing post 303 and be inserted into the limiting hole 302. Finally, the first protective shell 1 and the second protective shell 2 are quickly and detachably connected. The two protective shells together wrap the drain pipe 3, forming a closed protective space to prevent external construction debris from entering the pipe. When disassembly is required, the second protective shell 2 can be pulled upward directly. Since the fixing post 303 is circular, when it is pulled upward with force, the fixing post 303 can be dislodged from the circular groove 301, realizing the separation of the second protective shell 2 from the first protective shell 1.
[0017] Furthermore, such as Figure 2 and Figure 3As shown, a rectangular groove 401 is formed on the surface of the first protective shell 1 near one of the circular grooves 301. A first airbag 402 is installed inside the rectangular groove 401. An elongated slot 403 is formed on the surface of the first protective shell 1, and a second airbag 404 is installed at the bottom of the elongated slot 403. Several compression blocks 4 are fixed to both ends of the bottom of the second protective shell 2. The compression blocks 4 match the rectangular groove 401. An air tube is provided between the first airbag 402 and the second airbag 404. A one-way valve is provided inside the air tube. The compression blocks 4 at the bottom of the second protective shell 2 are inserted into the surface of the first protective shell 1 simultaneously with the shell body being fastened. The extrusion block 4 is in the rectangular groove 401, and the size of the extrusion block 4 matches the rectangular groove 401, so it can be completely embedded in the groove. During the embedding process, the extrusion block 4 extrudes the first airbag 402 in the rectangular groove 401, so that the gas in the first airbag 402 flows to the second airbag 404 through the connecting air pipe. The one-way valve in the air pipe can prevent the gas from flowing back and ensure the one-way delivery of gas. The second airbag 404 is located at the bottom of the long slot 403 of the first protective shell 1. After receiving the gas, it gradually expands until it fits against the top of the second protective shell 2, filling the tiny gaps and completely blocking the passage for cement slurry, dust and other fine debris to enter the pipeline.
[0018] Furthermore, such as Figure 1 As shown, rubber pads are provided in the placement holes of the first protective shell 1 and the second protective shell 2. Fixing blocks 5 are provided at the four corners of the bottom of the first protective shell 1. Bolts 501 are provided at the bottom of the fixing blocks 5. By using the fixing blocks 5 and matching bolts 501 at the four corners of the bottom of the first protective shell 1, the bolts 501 are passed through the fixing blocks 5 and screwed into the preset threaded holes of the foundation or pre-embedded template. The first protective shell 1 is firmly fixed by the tightening force of the bolts 501.
[0019] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. A protective device for pre-embedded drainage pipes during the construction of a sewage treatment plant, comprising a first protective shell (1), a second protective shell (2), and a drainage pipe (3), characterized in that: The first protective shell (1) and the second protective shell (2) are both provided with placement holes that match the drain pipe (3). The first protective shell (1) is provided with several round hole grooves (301) at both ends of its surface. The inside of the round hole grooves (301) is provided with threaded anti-slip grooves. Limiting holes (302) are provided on both sides of the round hole grooves (301). The bottom ends of the second protective shell (2) are provided with several quick-release components. The quick-release assembly includes fixed posts (303) fixedly installed at both ends of the bottom of the second protective shell (2). The number of fixed posts (303) is equal to the number of circular slots (301). An installation block (304) is fixedly connected to the inner wall of the fixed post (303). A fixing ring (305) is fixedly connected to one side of the installation block (304). A collar (308) is fixedly connected to the surface of the fixing ring (305). Spring plates (306) are provided on both sides of the collar (308). A limit post (307) is fixedly connected to one side of the two spring plates (306). The first protective shell (1) and the second protective shell (2) are detachably connected through the quick-release assembly and together wrap the drain pipe.
2. The pre-embedded protective device for drainage pipes in the construction of a sewage treatment plant according to claim 1, characterized in that: One end of each of the two limiting posts (307) passes through the outside of the fixing post (303) and matches the limiting hole (302).
3. The pre-embedded protective device for drainage pipes in the construction of a sewage treatment plant according to claim 2, characterized in that: A rectangular groove (401) is provided on one side of the surface of the first protective shell (1) near the circular grooves (301). A first airbag (402) is installed inside the rectangular groove (401). A long slot (403) is provided on the surface of the first protective shell (1). A second airbag (404) is installed at the bottom of the long slot (403).
4. The pre-embedded protective device for drainage pipes in the construction of a sewage treatment plant according to claim 3, characterized in that: Several compression blocks (4) are fixed to the bottom ends of the second protective shell (2). The compression blocks (4) are matched with the rectangular groove (401). An air tube is provided between the first airbag (402) and the second airbag (404). A one-way valve is provided inside the air tube.
5. The pre-embedded protective device for drainage pipes in the construction of a sewage treatment plant according to claim 4, characterized in that: Rubber pads are provided in the placement holes of the first protective shell (1) and the second protective shell (2).
6. The pre-embedded protective device for drainage pipes in the construction of a sewage treatment plant according to claim 5, characterized in that: The bottom of the first protective shell (1) is provided with fixing blocks (5) at all four corners, and the bottom of the fixing blocks (5) is provided with bolts (501).