A ditch acid liquid collection anti-leakage structure
By installing U-shaped anti-leakage channels and PPH drainage pipes in the trench, combined with the design of support plates and sealing layers, the hidden dangers and pipe blockage problems caused by trench leakage are solved, enabling convenient cleaning and installation, and improving safety and stability.
Patent Information
- Application Number
- CN202522383110.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-10
AI Technical Summary
Existing drainage ditches used in the chemical industry to construct fluorosilicic acid liquid discharge systems are prone to aging, deformation, cracking, and damage, which can easily lead to underground corrosion and cavities. Furthermore, the pipes are easily blocked and difficult to clean, posing safety hazards.
It adopts a U-shaped anti-leakage groove and a drain pipe made of PPH or plastic material, combined with a support plate, sealing layer and soft sand layer. The drain pipe is fixed by arc-shaped support block and L-shaped fixing rod. O-rings and limiting protrusions are used to improve the sealing performance, and a U-shaped connecting groove is used to achieve a seamless connection, which is convenient for disassembly and cleaning.
It effectively eliminates the hidden dangers of underground cavities caused by trench leakage, avoids safety accidents, improves the stability and ease of cleaning of pipelines, and reduces maintenance difficulty.
Smart Images

Figure CN224931153U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of anti-leakage devices, specifically relating to an anti-leakage structure for collecting acid in sewers. Background Technology
[0002] In the chemical industry, the discharge of waste liquid generated during production is subject to extremely strict regulations, typically requiring treatment in wastewater ponds. Currently, the discharge of fluorosilicic acid involves channeling it into these ponds through pre-designed trenches. These trenches are often constructed primarily of carbon bricks, with drainage pipes installed within them to release the fluorosilicic acid liquid. However, the carbon brick anti-corrosion layer and underground seepage prevention layer of these trenches are susceptible to aging, deformation, cracking, and damage over long-term use. These abnormalities are difficult to detect and address, posing a significant risk and potentially leading to serious consequences such as underground corrosion and cavitation. Furthermore, small amounts of fluorosilicic acid are released during routine sampling and maintenance in the production process. Fluorosilicic acid readily forms solid scale, and the shallow slope of the trenches and pipes within them allows this scale to accumulate and clog the pipes. Moreover, the pipes within the trenches are electrofused and fixed, making disassembly impossible. The only way to clear the blockage is by directly striking the outer wall of the pipe, breaking up the scale and causing considerable damage to the pipeline.
[0003] In view of this, in order to solve the above problems, this utility model proposes a drainage acid collection and anti-leakage structure that can eliminate the hidden danger of underground cavities caused by drainage ditch leakage, avoid safety and environmental accidents, and facilitate pipeline disassembly and cleaning and installation. Utility Model Content
[0004] This utility model provides a seepage-proof structure for collecting acid in drainage ditches. The structure is simple and reasonable in design, eliminating the potential for underground cavities caused by drainage ditch leakage, preventing safety and environmental accidents, and facilitating pipeline disassembly and cleaning, as well as installation. The specific solution is as follows: A leak-proof structure for collecting acid in a drainage ditch includes a U-shaped leak-proof trough installed in the ditch. Support plates are horizontally connected to both sides of the upper end of the U-shaped leak-proof trough. The support plates are located directly above the upper step of the ditch. An installation groove is fixedly provided in the U-shaped leak-proof trough along its length. A drain pipe is provided on the installation groove. Multiple fixing parts for fixing the drain pipe are spaced apart on both sides of the installation groove along its length. A sealing layer is formed on the upper side of the support plate by pouring concrete. A cover plate grid is provided on the upper surface of the sealing layer.
[0005] Furthermore, a layer of soft sand is provided between the lower surface of the U-shaped anti-leakage groove and the side wall of the trench.
[0006] Furthermore, a soft layer is provided between the lower surface of the two support plates and the steps of the trench.
[0007] Furthermore, the fixing component includes an arc-shaped support block that is attached to the outer wall of the drain pipe and an L-shaped fixing rod connected to the arc-shaped support block. The L-shaped fixing rod is fixedly connected to the U-shaped anti-leakage groove by screws.
[0008] Furthermore, the drain pipe is composed of several adjacent drain branch pipes. One end of the drain branch pipe is a funnel-shaped structure, and the outer side of the other end is a tapered structure that matches the inner side of the funnel-shaped structure. Adjacent drain branch pipes are sealed with O-rings. The mounting groove is provided with a downward-facing placement groove suitable for placing the funnel-shaped structure of the drain branch pipe.
[0009] Furthermore, limiting protrusions are provided on opposite sides of the conical end of the drain pipe, and a limiting groove matching the limiting protrusion is provided on the inner side of the flared end of the drain pipe, and the limiting groove has an L-shaped structure.
[0010] Furthermore, the leak-proof structure also includes a U-shaped connecting groove, with a U-shaped leak-proof groove fixedly connected to each end of the U-shaped connecting groove. The two outer sides of the U-shaped connecting groove opposite to the U-shaped leak-proof groove are respectively provided with U-shaped docking grooves. The end of the U-shaped leak-proof groove is provided with a U-shaped slot for the docking groove to be inserted.
[0011] Furthermore, the U-shaped leak-proof groove and the U-shaped connecting groove are made of PPH or plastic material respectively, and the drain pipe is made of PPH pipe.
[0012] Furthermore, reinforcing ribs are fixedly connected to the side walls of the U-shaped connecting grooves on both sides of the docking groove.
[0013] The beneficial effects of this utility model are: This utility model discloses a drainage ditch acid collection and anti-leakage structure. By setting up a U-shaped anti-leakage trough and drainage pipe made of PPH or plastic material in the ditch and designing the drainage pipe to consist of several drainage branches, it not only eliminates the hidden danger of underground cavities caused by drainage ditch leakage and avoids safety and environmental accidents, but also facilitates the disassembly and cleaning of the drainage pipe and is easy to install. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This is a side sectional view of the present invention.
[0016] Figure 3 for Figure 2 Enlarged view of section A.
[0017] Figure 4 This is a schematic diagram of the U-shaped connecting groove of this utility model.
[0018] Figure 5This is a side view of the U-shaped connecting groove of this utility model.
[0019] Figure 6 This is a diagram showing the connection of the drainage pipe of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Trench; 2. U-shaped anti-leakage groove; 3. Support plate; 4. Installation groove; 5. Drain pipe; 6. Fixing component; 601. Arc-shaped support block; 602. L-shaped fixing rod; 7. Sealing layer; 8. Cover plate grid; 9. Soft sand layer; 10. Flat soft layer; 11. O-ring seal; 12. Limiting protrusion; 13. U-shaped connecting groove; 14. Butt groove; 15. U-shaped slot; 16. Reinforcing rib plate. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] See Figure 1-6 A leak-proof structure for collecting acid in a drainage ditch includes a U-shaped leak-proof groove 2 installed in a drainage ditch 1. Support plates 3 are horizontally connected to both sides of the upper end of the U-shaped leak-proof groove 2. The support plates 3 are located directly above the upper step of the drainage ditch 1. An installation groove 4 is fixedly installed in the U-shaped leak-proof groove 2 along its length. A drain pipe 5 is installed on the installation groove 4. Multiple fixing parts 6 for fixing the drain pipe 5 are spaced apart on both sides of the installation groove 4 along its length. A sealing layer 7 is poured with concrete on the upper side of the support plate 3. A cover plate grid 8 is installed on the upper surface of the sealing layer 7.
[0023] A soft sand layer 9 is provided between the lower surface of the preferred U-shaped anti-leakage groove 2 and the side wall of the trench 1. The soft sand layer 9 can not only make the U-shaped anti-leakage groove 2 solid, but also provide a certain degree of protection for the U-shaped anti-leakage groove 2.
[0024] Preferably, a soft layer 10 is provided between the lower surface of the two support plates 3 and the step of the trench 1. The soft layer 10 is provided to help to reduce the pressure on the support plates 3 and prevent them from being crushed by the concrete-poured sealing layer 7.
[0025] The preferred fixing element 6 includes an arc-shaped support block 601 that abuts against the outer wall of the drain pipe 5 and an L-shaped fixing rod 602 connected to the arc-shaped support block 601. The arc-shaped support block 601 is located at the lower part of the drain pipe 5, and the L-shaped fixing rod 602 is fixedly connected to the U-shaped anti-leakage groove 2 by screws. Specifically, the fixing element 6 is made of spring material. The fixing element 6 is designed to facilitate the limiting and fixing of the drain pipe 5. When installing the drain pipe 5, it is only necessary to push down and insert the arc-shaped support blocks 601 on both sides until their bottom surfaces are on the mounting groove 4. Installation and disassembly are both convenient and quick. The preferred drain pipe 5 is composed of several adjacent drain branches. One end of the drain branch is a funnel-shaped structure, and the outer side of the other end is a conical structure that matches the inner side of the funnel-shaped structure. Adjacent drain branches are sealed by O-ring seals 11. The mounting groove 4 has a downward-facing placement groove suitable for placing the funnel-shaped structure of the drain branch. Specifically, the drain branch at the funnel-shaped structure end has an annular groove suitable for placing the O-ring seal 11. During installation, the conical end of the drain branch can be pressed against the funnel structure end, which is convenient for installation.
[0026] The preferred drain pipe has limiting protrusions 12 on opposite sides of its tapered end. The inner side of the flared end of the drain pipe has a limiting groove that matches the limiting protrusions 12, and the limiting groove has an L-shaped structure. The setting of the limiting protrusions 12 and the limiting groove facilitates the improvement of the stability and sealing of the drain pipe 5 after connection. Specifically, during installation, the tapered end of the drain pipe faces the flared end of the next drain pipe and the limiting protrusion 12 extends into the vertical part of the limiting groove of the L-shaped structure. After it reaches the horizontal part, it is rotated so that the limiting protrusion 12 abuts against the horizontal side wall of the limiting groove. The same principle applies to disassembly, making the operation convenient and quick.
[0027] The preferred leak-proof structure also includes a U-shaped connecting groove 13, with U-shaped leak-proof grooves 2 fixedly connected to both ends of the U-shaped connecting groove 13. U-shaped mating grooves 14 are provided on the two outer sides of the U-shaped connecting groove 13 facing away from the U-shaped leak-proof groove 2. A U-shaped slot 15 is provided at the end of the U-shaped leak-proof groove 2 for insertion into the mating groove 14. Specifically, when the trench 1 has a "T" or "+" shaped structure, it can be connected by inserting the U-shaped connecting groove 13. During connection, the sidewall of the U-shaped connecting groove 13 inside the mating groove 14 is removed, and the U-shaped leak-proof groove 2 is connected to both ends of the U-shaped connecting groove 13 and the mating groove 14. When connecting the mating groove 14 and the U-shaped leak-proof groove 2, it is inserted into the U-shaped slot 15 to enhance stability. Finally, the U-shaped leak-proof groove 2, the U-shaped connecting groove 13, and the mating groove 14 are seamlessly connected by electrofusion.
[0028] The preferred U-shaped leak-proof groove 2 and U-shaped connecting groove 13 are made of PPH or plastic material, and the drain pipe 5 is made of PPH pipe.
[0029] Reinforcing ribs 16 are fixedly connected to the side walls of the U-shaped connecting grooves 13 on both sides of the preferred docking groove 14.
[0030] The working principle of this utility model: During installation, firstly, a soft sand layer 9 and a flat soft layer 10 are laid inside the trench 1 and on its steps, respectively. Then, the U-shaped leak-proof groove 2 is placed inside the trench 1, with its lower surface resting on the soft sand layer 9 and the two support plates 3 resting on the flat soft layer 10. Next, a sealing layer 7 is poured onto the upper surface of the two support plates 3 using concrete. Then, the drain pipe 5 is installed downwards between the fixing parts 6 on both sides, with its lower surface resting on the installation groove 4. When the trench 1 has a "T" or "+" shaped structure, the drain pipe is installed through... The U-shaped connecting groove 13 is used for plug-in connection. During connection, the side wall of the U-shaped connecting groove 13 inside the docking groove 14 is removed, and the U-shaped anti-leakage groove 2 is connected to both ends of the U-shaped connecting groove 13 and the docking groove 14. When connecting the docking groove 14 and the U-shaped anti-leakage groove 2, it is inserted into the U-shaped slot 15 to enhance stability. Finally, the U-shaped anti-leakage groove 2, the U-shaped connecting groove 13 and the docking groove 14 are seamlessly connected by electrofusion. When cleaning the scale solids inside the drain pipe 5, the drain pipes can be removed one by one.
[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.
[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A leak-proof structure for collecting acid in sewer drains, characterized in that: The system includes a U-shaped leak-proof groove (2) set in the trench (1), with support plates (3) horizontally connected to the upper two sides of the U-shaped leak-proof groove (2). The support plates (3) are located directly above the upper step of the trench (1). An installation groove (4) is fixedly provided in the U-shaped leak-proof groove (2) along its length direction. A drain pipe (5) is provided on the installation groove (4). Multiple fixing parts (6) for fixing the drain pipe (5) are provided at intervals on both sides of the installation groove (4) along its length direction. A sealing layer (7) is poured with concrete on the upper side of the support plate (3). A cover plate grid (8) is provided on the upper surface of the sealing layer (7).
2. The seepage-proof structure for collecting acid in drainage ditches according to claim 1, characterized in that: A soft sand layer (9) is provided between the lower surface of the U-shaped anti-leakage groove (2) and the side wall of the trench (1).
3. The seepage-proof structure for collecting acid in drainage ditches according to claim 1, characterized in that: A soft layer (10) is provided between the lower surface of the two support plates (3) and the steps of the trench (1).
4. The seepage-proof structure for collecting acid in sewers according to claim 1, characterized in that: The fastener (6) includes an arc-shaped support block (601) that is attached to the outer wall of the drain pipe (5) and an L-shaped fixing rod (602) connected to the arc-shaped support block (601). The L-shaped fixing rod (602) is fixedly connected to the U-shaped anti-leakage groove (2) by screws.
5. The seepage-proof structure for collecting acid in sewers according to claim 1, characterized in that: The drain pipe (5) is composed of several adjacent drain branches. One end of the drain branch is a trumpet-shaped structure, and the outer side of the other end is a conical structure that matches the inner side of the trumpet-shaped structure. The two adjacent drain branches are sealed by an O-ring (11). The mounting groove (4) is provided with a placement groove suitable for placing the trumpet-shaped structure of the drain branch.
6. The seepage-proof structure for collecting acid in drainage ditches according to claim 5, characterized in that: The drain pipe has a limiting protrusion (12) on each side of the tapered end. The drain pipe has a limiting groove matching the limiting protrusion (12) on the inner side of the flared end. The limiting groove is an L-shaped structure.
7. The seepage-proof structure for collecting acid in drainage ditches according to claim 1, characterized in that: The leak-proof structure also includes a U-shaped connecting groove (13), with a U-shaped leak-proof groove (2) fixedly connected to both ends of the U-shaped connecting groove (13). The two outer sides of the U-shaped connecting groove (13) away from the U-shaped leak-proof groove (2) are respectively provided with U-shaped docking grooves (14). The end of the U-shaped leak-proof groove (2) is provided with a U-shaped slot (15) for the docking groove (14) to be inserted.
8. The seepage-proof structure for collecting acid in drainage ditches according to claim 7, characterized in that: The U-shaped anti-leakage groove (2) and the U-shaped connecting groove (13) are made of PPH or plastic material respectively, and the drain pipe (5) is made of PPH pipe.
9. The seepage-proof structure for collecting acid in drainage ditches according to claim 7, characterized in that: Reinforcing ribs (16) are fixedly connected to the side walls of the U-shaped connecting grooves (13) on both sides of the docking groove (14).
