Pipe fitting for preventing floor drain fault

By designing an integrated anti-disconnection pipe fitting for floor drains, the problem of disconnection between floor drains and sewer pipes is solved, achieving stable sealing, filtration, and adaptability, improving the reliability and versatility of the drainage system, and preventing sand and dust blockage and odor generation.

CN224148863UActive Publication Date: 2026-04-21HANZHONG ZHUZHENPIN DECORATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANZHONG ZHUZHENPIN DECORATION CO LTD
Filing Date
2025-05-23
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

The existing technology has a disconnect between the floor drain and the drain pipe, which makes the drain pipe easy to be blocked by sand and ash, making the installation difficult. In addition, the sand and ash layer is damp when showering and produces odors, affecting indoor air quality. It also has poor versatility and is difficult to adapt to different pipe diameters.

Method used

A pipe fitting for preventing floor drain breakage has been designed, comprising an upper, middle and lower section manufactured as a single unit, with a filter and diameter reducing device, combined with a filter basket, mounting ring and support column, and stability provided by a tension spring, ensuring sealing and compatibility.

Benefits of technology

It effectively prevents sand and ash blockage, keeps the sand and ash layer dry, enhances the versatility and durability of pipe fittings, ensures the stability and sealing of the drainage system, adapts to different pipe diameters, and reduces odor generation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) pipe fittings, and discloses a pipe fitting for preventing floor drain fault, the main body structure of the connecting pipe fitting consists of an upper end pipe, a middle section secondary drainage pipe and a lower end pipe, and the structure is precise, reasonable and easy to implement. The research and development of the anti-fault pipe fitting not only can effectively prevent drainage of the floor drain from scouring a sand-lime layer, but also can enable water of the sand-lime layer to be smoothly discharged into a sewer line, and even can effectively prevent sand-lime from falling into the sewer line to cause blockage of the sewer line when the floor drain is installed in the decoration tiling stage; the filter net basket is fixed to the inner ring of the mounting ring, impurities are further filtered out, the anti-blocking effect is enhanced, the supporting columns and the mounting ring are connected through the tightening springs, and when water flow impact or external force is applied to the pipe fitting, the supporting columns can guarantee the stability of the filter net basket and the mounting ring and maintain the filtering and drainage performance of the pipe fitting by means of telescopic buffering of the tightening springs; and the home decoration drainage requirement is comprehensively met.
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Description

Technical Field

[0001] This utility model relates to the field of PVC pipe fittings technology, specifically a pipe fitting for preventing floor drain breakage. Background Technology

[0002] In recent years, my country's home decoration industry has flourished, which has also put forward higher requirements for home decoration construction. Because the lowest point of the floor drain needs to be cut slightly below the mortar layer during the waterproofing construction, the sand and mortar can easily fall into the drain pipe during construction, causing the drain pipe to become blocked. After the floor drain is installed, the floor drain outlet cannot be inserted into the drain pipe. Later, the water from the bathroom when showering will flush the sand and mortar layer through the floor drain outlet, causing the sand and mortar layer to be damp and prone to odor.

[0003] To ensure both proper drainage of the sand and lime layer and direct flow of water from the floor drain into the sewer pipe, a perfect connection between the drain and the underground water outlet is currently unavailable on the market, making it difficult to meet the needs of modern renovations. However, traditional floor drain and sewer pipe connection techniques have drawbacks. In past construction, the lack of effective connecting fittings specifically designed for the disconnect between the floor drain and sewer pipe allowed sand and lime to easily fall into the sewer pipe during construction, causing blockages and increasing the cost and hassle of subsequent unclogging. Furthermore, after installation, the floor drain outlet often fails to properly connect to the sewer pipe. This causes bathwater to directly wash over the sand and ash layer during drainage. Over time, the sand and ash layer remains damp, easily breeding bacteria and producing odors. This not only affects indoor air quality but may also threaten the health of residents. In addition, traditional connection methods have poor versatility and are difficult to adapt to floor drains and sewer pipes of different diameters. When encountering special-sized pipes, the installation difficulty increases and the connection effect is poor, failing to meet diverse home decoration needs and seriously restricting the optimization and upgrading of home decoration drainage systems. To address this, we have proposed a pipe fitting for preventing floor drain breakage. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a pipe fitting for preventing floor drain breakage, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a pipe fitting for preventing floor drain breakage, the main structure of the connecting pipe fitting includes an upper section, a middle section and a lower section, the upper section, the middle section and the lower section are integrally manufactured, and the three sections are connected without spigots, and also includes a filter basket, an installation ring and support columns, the filter basket is inserted and fixed in the inner ring of the installation ring, and multiple ring-shaped support columns are inserted and fixed in the bottom end of the installation ring, and a tension spring is provided between the support columns and the installation ring.

[0008] The middle section is equipped with a filter and a variable diameter setting. The filter nails in the filter setting have a diameter of 2-3mm, a height of 2-5mm, and a spacing of 2-5mm between adjacent filter nails.

[0009] The upper section has an inner diameter of 80-90mm and a length of 40-150mm, the lower section has an outer diameter of 36-65mm and a length of 40-150mm, and the entire connector has a wall thickness of 3-5mm.

[0010] The top of the mounting ring has a circular placement groove, and the top of the placement groove has multiple connecting posts arranged in a ring. The bottom of the mounting ring has multiple connecting cylinders arranged in a ring shape. The inside of the connecting cylinder has a positioning groove, and the cylindrical surface of the connecting cylinder has symmetrically distributed sliding grooves that are connected to the positioning groove.

[0011] The filter basket has multiple ring-shaped connection holes on its top ring. The end of the filter basket is inserted into the mounting ring, and the connection holes on the top ring of the filter basket are inserted and fixed to the connecting post.

[0012] The top outer cylindrical surface of the support column is provided with symmetrically distributed sliders, and the top of the support column is provided with a tension spring. The top of the support column is inserted into the inside of the positioning groove, the sliders are slidably engaged with the groove, and the tension spring is located inside the connecting cylinder.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a pipe fitting for preventing floor drain breakage, which has the following beneficial effects:

[0015] 1. This pipe fitting for preventing floor drain breakage enhances the reliability of the drainage system through its unique structural design. Firstly, the upper, middle, and lower sections of the fitting are manufactured as a single piece without any spigot connections, greatly enhancing stability and sealing, effectively avoiding leakage and seepage at the joints, and providing a solid guarantee for the long-term stable operation of the drainage system. Secondly, the filtration system in the middle section acts like a fine barrier, effectively preventing sand and dust from entering the drain pipe during the renovation stage, preventing pipe blockage. During daily use, it allows excess moisture from the sand and dust layer to flow smoothly into the drain pipe, keeping the sand and dust layer dry and reducing odor. Thirdly, the newly added filter basket further enhances the filtration effect, working in conjunction with the middle section filtration system to provide double protection for unobstructed drainage.

[0016] 2. This pipe fitting for preventing floor drain breakage is excellent in terms of adaptability and durability. Firstly, the variable diameter design in the middle section allows it to flexibly adapt to floor drains and sewer pipes of different diameters, ensuring a good connection regardless of the combination of specifications, greatly improving the fitting's versatility. Secondly, the fitting's reasonable size design and wall thickness selection ensure sufficient strength and durability. The appropriate wall thickness allows the fitting to withstand water flow impact and daily wear and tear, extending its service life. Furthermore, the mounting ring, support column, and tension spring work together. When water flow impacts or the fitting is subjected to external force, the support column uses the extension and contraction of the tension spring to buffer the impact, ensuring the stability of the filter basket and mounting ring, maintaining the overall filtration and drainage performance of the fitting, and comprehensively meeting practical usage needs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 3 A bottom view is provided for the middle section filter of this utility model;

[0020] Figure 4 This is a schematic diagram illustrating the application scenario of this utility model;

[0021] Figure 5 This is a schematic diagram showing the internal structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the mounting ring structure of this utility model.

[0023] In the diagram: 1. Upper section; 2. Middle section; 3. Lower section; 4. Filter nail; 5. Filter basket; 6. Mounting ring; 7. Support column; 8. Tensioning spring; 9. Placement groove; 10. Connecting column; 11. Connecting cylinder; 12. Positioning groove; 13. Slide groove; 14. Slider. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6A pipe fitting for preventing floor drain breakage is provided. The main structure of the connecting pipe fitting includes an upper section 1, a middle section 2, and a lower section 3. The upper section 1, middle section 2, and lower section 3 are manufactured as a single piece, and the three sections are connected without spigots. It also includes a filter basket 5, an mounting ring 6, and support columns 7. The filter basket 5 is inserted and fixed in the inner ring of the mounting ring 6, and multiple ring-shaped support columns 7 are inserted and fixed in the bottom end of the mounting ring 6. A tension spring 8 is provided between the support columns 7 and the mounting ring 6. Through the one-piece molding and spigot-free connection, the stability and sealing of the pipe fitting are enhanced, avoiding the risk of water leakage and seepage caused by interface problems, and ensuring the overall performance.

[0026] Furthermore, the middle section 2 is equipped with a filter and a variable diameter setting. The filter nails of the filter setting have a diameter of 2-3mm, a height of 2-5mm, and a spacing of 2-5mm between adjacent filter nails. The filter setting can effectively prevent sand and dust from entering the drain pipe during decoration and construction, preventing pipe blockage. At the same time, it can allow excess water from the sand and dust layer to flow smoothly into the drain pipe. The variable diameter setting can better adapt to floor drains and drain pipes of different diameters, improving the versatility of the pipe fittings.

[0027] Furthermore, the upper section 1 has an inner diameter of 80-90mm and a length of 40-150mm, while the lower section 3 has an outer diameter of 36-65mm and a length of 40-150mm. The entire connector has a wall thickness of 3-5mm. This ensures that the upper section 1 can be well matched with the convex outer diameter of common floor drains, and that the lower section 3 can adapt to different specifications of drain pipes. The appropriate wall thickness also ensures the strength and durability of the pipe fitting, meeting the actual usage requirements.

[0028] Furthermore, the top of the mounting ring 6 is provided with a circular placement groove 9, and the top of the placement groove 9 is provided with multiple ring-shaped connecting posts 10. The bottom of the mounting ring 6 is provided with multiple ring-shaped connecting cylinders 11. The inside of the connecting cylinder 11 is provided with a positioning groove 12, and the cylindrical surface of the connecting cylinder 11 is provided with symmetrically distributed sliding grooves 13. The sliding grooves 13 are connected to the positioning grooves 12, thus constructing a structural foundation for precise connection and cooperation with the filter basket 5 and the support post 7, providing conditions for the stable installation and collaborative operation of subsequent components.

[0029] Furthermore, the top ring of the filter basket 5 has multiple ring-shaped connecting holes. The end of the filter basket 5 is inserted into the mounting ring 6. The connecting holes of the top ring of the filter basket 5 are inserted and fixed to the connecting post 10, which realizes the stable installation of the filter basket 5 on the mounting ring 6, enabling it to effectively filter impurities in the water and enhance the anti-clogging effect of the pipe fitting.

[0030] Furthermore, the top outer cylindrical surface of the support column 7 is provided with symmetrically distributed sliders 14, and the top of the support column 7 is provided with a tension spring 8. The top of the support column 7 is inserted into the interior of the positioning groove 12, and the sliders 14 are slidably engaged with the sliding groove 13. The tension spring 8 is located inside the connecting cylinder 11. When water flow impacts or the pipe is subjected to external force, the support column 7 uses the extension and contraction of the tension spring 8 to buffer and ensure the stability of the filter basket 5 and the mounting ring 6, and maintain the overall filtration and drainage performance of the pipe.

[0031] Structural Description:

[0032] Upper Section 1: Upper Section 1 is the top structure of the anti-floor drain connection pipe fitting. Its inner diameter is adapted to the common lower convex outer diameter of floor drains. It is integrally formed with the middle and lower sections to provide an access channel for floor drain drainage.

[0033] Middle Section 2: Middle Section 2 is the core part of the pipe fitting, which is equipped with a filter and a diameter change setting. The filter nails block sand and dust and guide drainage. The diameter change design adapts to different pipe diameters and enhances the functionality of the pipe fitting.

[0034] Lower Section 3: Lower Section 3 is located at the bottom of the pipe fitting. Its outer diameter can accommodate various drain pipe specifications. It is manufactured as an integral part of the upper and middle sections to ensure that the drainage flows smoothly into the drain pipe.

[0035] Filter nails: Filter nails are the key to the mid-stage filtration setup. They are 2-3mm in diameter and 2-5mm in height and spacing. They effectively block sand and ash and allow the sand and ash layer water to flow into the drain pipe.

[0036] Filter basket 5: The filter basket 5 is installed in the inner ring of the mounting ring 6 and fixed to the connecting post 10 through the connecting hole, further filtering impurities in the water and improving the anti-clogging ability of the pipe fitting;

[0037] Mounting ring 6: Mounting ring 6 serves as a connection and support. The inner ring fixes the filter basket 5, and the bottom end is connected to the support column 7, providing a foundation for the coordinated work of various components.

[0038] Support column 7: The support column 7 is located at the bottom of the mounting ring 6, and has a slider 14 and a tension spring 8 at the top. It works with the mounting ring 6 to buffer external forces and ensure the stability of the component.

[0039] Tension spring 8: The tension spring 8 is installed inside the connecting cylinder 11 and located at the top of the support column 7. When water flow impacts or external force is applied, it provides buffering elasticity for the support column 7.

[0040] Placement slot 9: Placement slot 9 is located at the top of mounting ring 6 and is circular in shape. It is used to place related components, provide an installation position for connecting column 10, and enhance the overall structure.

[0041] Connecting post 10: The connecting post 10 is distributed at the top of the placement groove 9 and is inserted and fixed with the connecting hole of the filter basket 5 to achieve a stable installation of the filter basket 5 on the mounting ring 6.

[0042] Connecting cylinder 11: The connecting cylinder 11 is located at the bottom of the mounting ring 6. It has a positioning groove 12 inside and a sliding groove 13 on the cylindrical surface. It is used to connect the support column 7 to ensure that the components are connected stably.

[0043] Positioning groove 12: The positioning groove 12 is set inside the connecting cylinder 11 and is inserted into the top of the support column 7 to determine the installation position of the support column 7 and enhance the connection stability;

[0044] Slide groove 13: Slide groove 13 is symmetrically distributed on the cylindrical surface of the connecting cylinder 11, connected to the positioning groove 12, and slidably engaged with the slider 14 of the support column 7 to assist the support column 7 in buffering.

[0045] Slider 14: Slider 14 is symmetrically distributed on the outer cylindrical surface of the top of the support column 7, and slides and engages with the groove 13 of the connecting cylinder 11, and works with the tension spring 8 to buffer external force.

[0046] Working Principle: The main body of the pipe fitting is manufactured as a single piece, consisting of upper section 1, middle section 2, and lower section 3, without any spigot connections between the three sections. This integrated, spigot-free design greatly enhances the stability and sealing of the pipe fitting. During daily use, it effectively avoids the risk of leakage and seepage caused by interface problems, ensuring the long-term stable operation of the drainage system and providing a solid and reliable foundation for the entire home drainage system. Middle section 2 is the core functional area of ​​the pipe fitting, featuring a filter and diameter reduction mechanism. The filter nails in the filter mechanism play a crucial role, and their diameter, height, and adjacent spacing... The well-designed structure acts like a fine filter, effectively preventing sand and dust from entering the drainpipe during construction and preventing blockages. In daily life, excess water from the sand and dust layer flows smoothly into the drainpipe through the gaps between the filter nails, keeping the sand and dust layer dry and reducing odors. The variable diameter design demonstrates the fitting's excellent versatility, better adapting to floor drains and drainpipes of different diameters. Regardless of the combination of specifications, it achieves a tight and secure connection, ensuring smooth drainage. The inner diameter of the upper section (section 1) matches well with the outer diameter of the common convex circle at the bottom of floor drains, allowing for efficient drainage. The drain pipe allows for smooth entry into the fittings. The lower section's 3mm outer diameter accommodates different sizes of drain pipes, ensuring a tight connection. The appropriate wall thickness guarantees sufficient strength and durability, enabling the fittings to withstand long-term water flow impacts and various wear and tear from daily use, meeting diverse practical needs. The newly added filter basket 5, mounting ring 6, and support columns 7 further enhance the fittings' performance. The inner ring of the mounting ring 6 is inserted to fix the filter basket 5, which further filters impurities in the water, strengthening the anti-clogging effect. Multiple ring-shaped support columns 7 are inserted to fix the bottom of the mounting ring 6. A tension spring 8 is installed between the mounting ring 6 and the mounting ring 6. The mounting ring 6 has a placement groove 9 and a connecting column 10 at the top, and a connecting cylinder 11, a positioning groove 12, and a sliding groove 13 at the bottom. These components cooperate with the filter basket 5 and the support column 7. The filter basket 5 is fixed to the connecting column 10 through the connecting hole. The slider 14 at the top of the support column 7 slides and engages with the sliding groove 13. The tension spring 8 provides elasticity. During use, when water flow impacts or the pipe is subjected to external force, the support column 7 can buffer the impact through the extension and retraction of the tension spring 8, ensuring the stability of the filter basket 5 and the mounting ring 6, and keeping the pipe always in good filtration and drainage performance.

[0047] 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 pipe fitting for preventing a drain fault, a main body structure of the pipe fitting connecting an upper section (1), a middle section (2) and a lower section (3), characterized in that: The upper section (1), middle section (2) and lower section (3) are manufactured as a single unit, and the three sections are connected without any joints. It also includes a filter basket (5), a mounting ring (6) and a support column (7). The filter basket (5) is inserted and fixed in the inner ring of the mounting ring (6). Multiple ring-shaped support columns (7) are inserted and fixed at the bottom end of the mounting ring (6). A tension spring (8) is provided between the support column (7) and the mounting ring (6).

2. A pipe for preventing a clogging of a drain according to claim 1, characterized in that: The middle section (2) is equipped with a filter setting and a variable diameter setting, wherein the diameter of the filter nail in the filter setting is 2-3mm, the height of the filter nail is 2-5mm, and the spacing between adjacent filter nails is also 2-5mm.

3. A pipe for preventing a clogging of a drain according to claim 1, characterized in that: The upper section (1) has an inner diameter of 80-90mm and a length of 40-150mm, the lower section (3) has an outer diameter of 36-65mm and a length of 40-150mm, and the entire connector has a wall thickness of 3-5mm.

4. A pipe for preventing a clogging of a drain according to claim 1, characterized in that: The top end of the mounting ring (6) is provided with a circular placement groove (9), and the top end of the placement groove (9) is provided with a plurality of ring-shaped connecting posts (10). The bottom end of the mounting ring (6) is provided with a plurality of ring-shaped connecting cylinders (11). The interior of the connecting cylinder (11) is provided with a positioning groove (12), and the cylindrical surface of the connecting cylinder (11) is provided with symmetrically distributed sliding grooves (13), which are connected to the positioning grooves (12).

5. A pipe for use in a floor fault protection system according to claim 4, characterised in that: The filter basket (5) has multiple ring-shaped connecting holes on its top ring. The end of the filter basket (5) is inserted into the mounting ring (6). The connecting holes of the top ring of the filter basket (5) are inserted and fixed to the connecting post (10).

6. A pipe for preventing a clogging fault of a drain according to claim 4, characterized in that: The top outer cylindrical surface of the support column (7) is provided with symmetrically distributed sliders (14), and the top of the support column (7) is provided with a tension spring (8). The top of the support column (7) is inserted into the inside of the positioning groove (12). The slider (14) and the sliding groove (13) are slidably engaged. The tension spring (8) is located inside the connecting cylinder (11).