Anti-leakage device for industrial plant floor drain
By introducing a stainless steel rotating structure and HDPE membrane into the floor drains of industrial plants, the problems of mismatch between floor drains and buried pipelines and leakage due to thermal expansion and contraction are solved, achieving a leak-proof effect and reducing environmental pollution and construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-04-07
AI Technical Summary
Mismatched diameters of floor drains and buried pipelines in industrial plants can lead to water leakage risks. Furthermore, the thermal expansion and contraction of stainless steel floor drains and concrete floors can cause cracks, resulting in wastewater leakage and environmental pollution.
A leak-proof device comprising a stainless steel rotating structure and an HDPE membrane was designed. The stainless steel rotating structure is connected to the buried pipe, and the side outlet is combined with the HDPE membrane to prevent leakage. The leak-proof properties of the HDPE membrane are used to prevent wastewater from seeping in.
This solution resolves the mismatch between floor drains and pipeline connections, avoids potential leakage risks, reduces environmental pollution, lowers construction rework costs, shortens the construction period, and improves safety and ease of operation.
Smart Images

Figure CN224092658U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, specifically to a seepage prevention device for floor drains in industrial plants. Background Technology
[0002] In addition to floor drains and sewage systems, rooms that may cause environmental pollution also need to be equipped with a 1-2mm thick HDPE membrane under the floor slab to prevent wastewater from overflowing onto the floor or from seeping into the ground and polluting the surrounding environment (i.e., the soil under the factory building) when the wastewater flows onto the floor slab.
[0003] Industrial plant floor drains are typically made of stainless steel, and some may use American standard sizes. However, buried pipelines are usually designed with PE material and use national standard sizes. This results in a mismatch between the lower opening of the floor drain and the opening of the buried pipeline; often, the lower opening of the floor drain is slightly larger than the opening of the buried pipeline. With the floor drain fitting over the buried pipeline, there is a risk of leakage.
[0004] In addition, stainless steel floor drains and surrounding concrete floors may develop micro-cracks due to long-term thermal expansion and contraction. Wastewater from the factory may seep downwards through these cracks before entering the floor drain, and then seep into the floor below through the contact point between the HDPE membrane and the floor drain, thus causing environmental pollution.
[0005] Based on some problems and potential hazards encountered during actual construction, we have made some improvements to conventional floor drains. To this end, we have improved the existing technology mentioned above based on actual usage. Utility Model Content
[0006] The purpose of this invention is to provide a seepage prevention device for floor drains in industrial plants, in order to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A leak-proof device for floor drains in industrial plants includes a drain housing, a drain filter screen connected to the top of the drain housing, a drain pipe connected to the bottom of the drain housing, a stainless steel rotating structure connected to the outer wall, a stainless steel reducing pipe welded to the bottom of the drain pipe, side outlets on both sides of the outer wall of the drain pipe, the side outlets being located above the stainless steel rotating structure, a support assembly installed at the bottom of the drain pipe, and the drain pipe being installed inside the floor assembly.
[0009] Furthermore: the stainless steel rotating structure is a stainless steel ring with a concave inclined groove, and the angle between the inclined groove and the horizontal direction is 45°, and the thickness of the stainless steel rotating structure is 2-3mm.
[0010] Furthermore: the support assembly includes a buried pipe fitted onto the bottom of the stainless steel reducer, and a clamp is connected to the outer wall of the stainless steel reducer and the buried pipe at the contact point.
[0011] Furthermore: the flooring component includes a backfill soil layer set on the outer wall of the buried pipe, and a concrete pad layer is provided on top of the backfill soil layer, and an indoor floor concrete layer is provided on top of the concrete pad layer. An HDPE membrane is provided at the connection between the concrete pad layer and the indoor floor concrete layer. A slope is provided on the inner side of the top of the indoor floor concrete layer, and the lowest point of the slope is flush with the top of the drain filter.
[0012] Furthermore, a rubber washer is provided on the inner wall of the clamp.
[0013] Furthermore: HDPE membrane is laid on the inner wall of the stainless steel rotating structure.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This utility model optimizes the seepage prevention effect of industrial plant floors and floor drains from both the device and installation aspects. Under the premise of meeting design and specification requirements, it solves the connection problem between floor drains and buried pipes of different diameters, and also avoids the hidden danger of leakage from cracks around the floor drain. It enables industrial plants to meet environmental protection requirements, reduces rework costs caused by leakage, shortens the construction period, and makes the connection between the floor drain and the pipeline and the floor drain and the surrounding concrete floor form an integral whole, which will not cause pollution to the surrounding environment. Compared with conventional construction methods, it is safe, reliable, easy to operate, labor-saving, time-saving and highly applicable. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the installation structure of this utility model.
[0018] In the diagram: 1. Drain shell; 101. Drain pipe; 2. Drain filter; 3. Stainless steel rotating structure; 4. Stainless steel reducing pipe; 5. Side outlet; 6. Clamp; 7. Buried pipe; 8. Indoor concrete floor layer; 9. Slope; 10. HDPE membrane; 11. Concrete subbase; 12. Backfill layer. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1 This utility model provides a technical solution: a seepage prevention device for floor drains in industrial plants, including a floor drain shell 1, a floor drain filter screen 2 connected to the top of the floor drain shell 1, a floor drain pipe 101 connected to the bottom of the floor drain shell 1, a stainless steel rotating structure 3 connected to the outer wall, and a stainless steel reducing pipe 4 welded to the bottom of the floor drain pipe 101. Side outlets 5 are opened on both sides of the outer wall of the floor drain pipe 101, and the side outlets 5 are located above the stainless steel rotating structure 3. A support component is installed at the bottom of the floor drain pipe 101, and the floor drain pipe 101 is installed inside the floor component.
[0021] Preferably, the stainless steel rotating structure 3 is a stainless steel ring with a concave inclined groove, and the angle between the inclined groove and the horizontal direction is 45°, and the thickness of the stainless steel rotating structure 3 is 2-3mm.
[0022] Preferably, the support assembly includes a buried pipe 7 fitted at the bottom of the stainless steel reducing pipe 4, and a clamp 6 is connected to the outer wall of the stainless steel reducing pipe 4 and the buried pipe 7. A rubber gasket is provided on the inner wall of the clamp 6 to prevent the drain from being fitted on the outside of the buried pipe 7 and causing leakage risk.
[0023] Preferably, the flooring component includes a backfill soil layer 12 disposed on the outer wall of the buried pipe 7, and a concrete pad layer 11 is provided on top of the backfill soil layer 12, and an indoor floor concrete layer 8 is provided on top of the concrete pad layer 11. An HDPE membrane 10 is provided at the connection between the concrete pad layer 11 and the indoor floor concrete layer 8. HDPE membrane 10 is a plastic roll made of high-density polyethylene (HDPE) resin, which has good anti-corrosion, electrical, moisture-proof and leak-proof properties. HDPE membrane 10 is laid on the inner wall of the stainless steel rotating structure 3. A slope 9 is provided on the inner side of the top of the indoor floor concrete layer 8, and the lowest point of the slope 9 is flush with the top of the drain filter 2. Example:
[0024] (1) Weld a section of stainless steel reducing pipe 4 according to the diameter of the buried pipe 7 and the lower diameter of the drain pipe 101. The wall thickness is the same as that of the stainless steel drain. This makes it easier for the drain pipe 101 to be inserted into the buried pipe 7. Then, use clamps 6 (with rubber rings inside) to fix it firmly. This will prevent the drain pipe 101 from being wrapped around the outside of the buried pipe 7, which could lead to leakage.
[0025] (2) Because the stainless steel floor drain and the concrete floor will inevitably develop micro-cracks due to long-term thermal expansion and contraction, the wastewater on the floor will seep into the floor and pollute the environment. Therefore, according to the floor construction method, the height of the concrete subfloor 11 is calculated, and then a side outlet 5 is opened on the side of the drain pipe 101 at the corresponding height. A stainless steel rotating structure 3 is welded at the lower end of the side outlet 5. The main purpose is to solve the problem that the HDPE membrane 10 cannot be in close contact with the stainless steel floor drain, so that the HDPE membrane 10 on the concrete subfloor 11 can be laid to the side outlet 5. The wastewater seeping down from the cracks enters the sewage system through the side outlet 5 and finally meets the environmental protection requirements.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A leak-proof device for floor drains in industrial plants, characterized in that: The system includes a drain housing (1), a drain filter (2) connected to the top of the drain housing (1), a drain pipe (101) connected to the bottom of the drain housing (1), a stainless steel rotating structure (3) connected to the outer wall, and a stainless steel reducing pipe (4) welded to the bottom of the drain pipe (101). Side outlets (5) are provided on both sides of the outer wall of the drain pipe (101), and the side outlets (5) are located above the stainless steel rotating structure (3). A support component is installed at the bottom of the drain pipe (101), and the drain pipe (101) is installed inside the floor assembly.
2. The anti-leakage device for industrial plant floor drains according to claim 1, characterized in that: The stainless steel rotating structure (3) is a stainless steel ring with a concave inclined groove, and the angle between the inclined groove and the horizontal direction is 45°. The thickness of the stainless steel rotating structure (3) is 2-3mm.
3. The anti-leakage device for industrial plant floor drains according to claim 1, characterized in that: The support assembly includes a buried pipe (7) sleeved on the bottom of the stainless steel reducing pipe (4), and a clamp (6) is connected to the outer wall of the stainless steel reducing pipe (4) and the buried pipe (7).
4. A seepage prevention device for industrial plant floor drains according to claim 1, characterized in that: The flooring assembly includes a backfill soil layer (12) set on the outer wall of the buried pipe (7), and a concrete cushion layer (11) is provided on the top of the backfill soil layer (12), and an indoor floor concrete layer (8) is provided on the top of the concrete cushion layer (11). An HDPE membrane (10) is provided at the connection between the concrete cushion layer (11) and the indoor floor concrete layer (8). A slope (9) is provided on the inner side of the top of the indoor floor concrete layer (8), and the lowest point of the slope (9) is flush with the top of the drain filter (2).
5. A seepage prevention device for industrial plant floor drains according to claim 3, characterized in that: A rubber gasket is provided on the inner wall of the clamp (6).
6. A seepage prevention device for industrial plant floor drains according to claim 4, characterized in that: The HDPE membrane (10) is laid on the inner wall of the stainless steel rotating structure (3).