Anti-blocking floor drain clamping structure

The combination design of cast iron drain clips, plastic spring hoses, and reamer turntable solves the problems of easy backflow of odors and blockages in floor drains, achieves foreign object interception and convenient cleaning, and reduces maintenance costs and usage barriers.

CN121473450APending Publication Date: 2026-02-06CHINA MCC20 GRP CORP LTD +1
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Patent Information

Application Number
CN202511929982.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-19
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

Existing floor drains are prone to backflow of odors and are difficult to clean due to blockages, resulting in difficult maintenance and high costs.

Method used

It adopts a structure of cast iron drain clip, plastic spring hose and reamer turntable, combined with one-way valve and reamer turntable design to achieve foreign object interception and convenient cleaning. The reamer turntable cuts fibrous foreign objects and the plastic spring hose clears blockages.

Benefits of technology

It effectively prevents sewer odors from backing up, reduces the risk of blockages, lowers maintenance difficulty and costs, allows ordinary users to clean it themselves, and extends its service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an anti-blocking floor drain clamping structure, belongs to the technical field of building drainage accessories, and solves the problems that an existing floor drain is easy to block, difficult to dredge and easy to return odor. The anti-blocking floor drain clamp structure comprises a cast iron floor drain clamp, a plastic spring hose and a reamer turntable, the cast iron floor drain clamp is movably clamped on the floor drain base, and a rubber sealing layer is arranged on the side wall; the plastic spring hose is detachably assembled below the cast iron floor drain clamp; a reamer rotating disc and a one-way valve are arranged in the cast iron floor drain clamp, the reamer rotating disc is located above the one-way valve, and an upper-layer blade can rotate relative to a lower-layer blade to cut off foreign matter. A baffle of the one-way valve is hinged through a one-way hinge and can only be opened towards one side of the plastic spring hose, and a hinge rotating shaft is sleeved with a torsional spring to reset the baffle. The device is simple in structure, low in manufacturing cost, convenient to operate, capable of effectively preventing blocking and odor returning and reducing the repair amount of a drainage system, and suitable for various civil buildings.
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Description

Technical Field

[0001] This invention relates to the field of building drainage technology, and in particular to an anti-clogging floor drain clip structure. Background Technology

[0002] Drainage is a crucial aspect of building construction, as its quality directly impacts the building's lifespan and affects people's daily lives. For example, during rainy days or typhoons, clogged drains can cause rainwater to accumulate, seep into ceilings, crack walls, leaks, and mold growth. Over time, this leads to a damp and dark environment, which can harm people's health.

[0003] Currently, ordinary floor drains on the market generally suffer from two major defects: first, they are prone to backflow of odors, as unpleasant smells from the sewer can easily diffuse into the room through the gaps in the drain; second, they are prone to clogging and difficult to unclog. Long-term accumulation of foreign objects such as hair and fibers often requires professional tools or even hiring a repairman. Some severely clogged drains cannot be completely cleared, leading to recurring water accumulation problems. This not only causes great inconvenience to users but also increases the workload of waterproofing repairs for roofs, kitchens, bathrooms, and balconies, raising maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems of existing floor drains being prone to backflow of odor and difficult to clean and unclog. It provides a clog-proof floor drain clip structure that achieves multiple functions such as efficient interception of foreign objects, convenient cleaning, and prevention of backflow of odor, thereby reducing the maintenance difficulty and repair cost of the drainage system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A clog-resistant floor drain clamp structure includes a cast iron floor drain clamp, a plastic spring hose, and a reamer turntable;

[0007] The cast iron drain clip is movably attached to the drain base, and the plastic spring hose is detachably mounted below the cast iron drain clip. The cast iron drain clip contains a one-way valve and a reamer turntable, with the reamer turntable located directly above the one-way valve.

[0008] Preferably, the one-way valve includes a baffle and a one-way hinge;

[0009] One side of the baffle is hinged to the inner wall of the bottom opening of the cast iron drain clip via the one-way hinge, so that the baffle can only be opened in one direction to the plastic spring hose.

[0010] A torsion spring is fitted on the pivot of the one-way hinge. One end of the torsion spring is fixedly connected to the inner wall of the cast iron drain clip, and the other end is fixedly connected to the side wall of the baffle. The torsion spring always applies an elastic force to the baffle in the closing direction. When the water flow impact force is greater than the sum of the torsion spring force and the magnetic attraction force, the baffle opens to the plastic spring hose side. After the water flows out, the baffle returns to its original position and closes under the action of the torsion spring force.

[0011] Preferably, the cast iron drain clip has a rubber sealing layer on the side wall for engaging with the drain base, and the rubber sealing layer is continuously distributed circumferentially along the side wall.

[0012] Preferably, the wall thickness of the plastic spring hose is 0.9 to 1.1 mm.

[0013] Preferably, the reamer turntable includes two layers of blades that cooperate with each other. The lower blade is fixedly connected to the inner wall of the cast iron drain clip, and the upper blade can rotate relative to the lower blade around its own axis. The lower surface of the upper blade is in close contact with the upper surface of the lower blade.

[0014] Preferably, a rotating handle is integrally formed in the middle of the upper blade, and the outer wall of the rotating handle is provided with anti-slip texture.

[0015] Preferably, the plastic spring hose is made of nylon.

[0016] Compared with the prior art, the above invention has at least one of the following advantages or beneficial effects:

[0017] 1) By setting up a scissor turntable, it can cut off fibrous foreign objects such as hair, reducing the risk of blockage at the source; by setting up a one-way valve, it can open automatically when draining and close tightly when there is no water flow, effectively preventing the backflow of sewer odors.

[0018] 2) By adding a plastic spring hose to the floor drain, when the floor drain is blocked, the plastic spring hose can be pulled out to remove the blockage and unclog the floor drain. This avoids the phenomenon of frequent water accumulation caused by the difficulty or inability to unclog ordinary floor drains, and greatly reduces the amount and cost of waterproofing repairs for roofs, kitchens, bathrooms and balconies.

[0019] 3) The overall structure is easy to disassemble and assemble. Daily cleaning of foreign objects and unblocking of blockages do not require professional tools. Ordinary users can complete the task independently, reducing the threshold for use.

[0020] 4) The core components are made of conventional materials such as cast iron and nylon, which have low production costs, are anti-aging and wear-resistant, and have a long service life, making them suitable for various civil building scenarios. Attached Figure Description

[0021] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. In the full-layer drawings, the same reference numerals indicate the same layers. The drawings are not drawn to scale; the focus is on illustrating the gist of the invention.

[0022] Figure 1 This is a schematic diagram of the anti-clogging drain card structure in an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the anti-clogging drain card structure in an embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional view of the reamer turntable in an embodiment of the present invention;

[0025] Among them, 1. Cast iron drain clip; 2. Plastic spring hose; 3. Reamer turntable; 31. Upper blade; 32. Rotating handle; 4. Baffle; 5. One-way hinge. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but these are not intended to limit the scope of the invention.

[0027] like Figure 1 and 2 As shown, this embodiment discloses an anti-clogging drain clip structure. Specifically, the anti-clogging drain clip structure includes a cast iron drain clip 1, a plastic spring hose 2 (similar to the bend of a straw), and a reamer turntable 3.

[0028] The aforementioned cast iron drain clip 1 is made of gray cast iron and is movably snapped onto the drain base. A rubber sealing layer 6 is provided on the side wall where it snaps onto the drain base. The rubber sealing layer 6 is continuously distributed along the circumference of the side wall, which can enhance the snap-fit ​​sealing and prevent sewage leakage. The plastic spring hose 2 is detachably assembled below the cast iron drain clip 1. It is prepared by extrusion molding process and the wall thickness is controlled to be 1.0 mm. Since the plastic spring hose 2 is installed inside the cast iron drain clip 1, a one-way valve and a reamer turntable 3 are provided, and the reamer turntable 3 is located directly above the one-way valve.

[0029] like Figure 3As shown, the aforementioned reamer turntable 3 includes two layers of blades that cooperate with each other. The lower blade is fixedly connected to the inner wall of the cast iron drain clip 1. The upper blade 31 can rotate relative to the lower blade around its own axis, and the lower surface of the upper blade 31 is in close contact with the upper surface of the lower blade. A rotating handle 32 is integrally formed in the middle of the upper blade 31. The outer wall of the rotating handle 32 is provided with anti-slip texture for easy manual operation by the user. Both the upper and lower blades are made of stainless steel and are formed by stamping. The blade edge is quenched to enhance sharpness. The center of the upper blade 31 and the rotating handle 32 are integrally injection molded, and the outer wall of the rotating handle 32 is rolled with anti-slip texture.

[0030] The aforementioned one-way valve includes a baffle 4, a one-way hinge 5, and a torsion spring. One side of the baffle 4 is hinged to the inner wall of the bottom opening of the cast iron drain clip 1 via the one-way hinge 5, allowing the baffle 4 to open only to the plastic spring hose 2. A torsion spring is fitted onto the pivot of the one-way hinge 5, with one end fixedly connected to the inner wall of the cast iron drain clip 1 and the other end fixedly connected to the side wall of the baffle 4. The torsion spring always applies an elastic force to the baffle 4 in the closing direction. The baffle 4 is injection molded from engineering plastic; the one-way hinge 5 uses a stainless steel pivot, and the torsion spring is made of carbon spring steel.

[0031] Specifically, when installing a floor drain: install and fix the floor drain base according to the standard building drainage construction specifications, ensuring that the base and drain pipe are in close contact. After the floor drain base is installed and dried, insert the assembled anti-clogging floor drain clip structure into the floor drain base, ensuring that the rubber sealing layer 6 is tightly fitted to the base, thus completing the installation.

[0032] During normal drainage, water flows into the baffle 4. When the impact force exceeds the torsion spring force, the baffle 4 opens towards the plastic spring hose 2, allowing water to flow through the gap of the reamer turntable 3 and the one-way valve into the drain pipe. When there is no water flow, the baffle 4 returns to its original position and closes under the action of the torsion spring force. When foreign objects such as hair accumulate, manually turn the extended rotating handle 32 to rotate the upper blade 31 relative to the lower blade, cutting off the foreign objects. The foreign objects are discharged with the water flow or deposited in the plastic spring hose 2. When the pipe is blocked, pull the cast iron drain clip 1 and the plastic spring hose assembly upwards. After removing the assembly as a whole, remove the plastic spring hose 2, clean the blockage inside the pipe, and wipe the reamer turntable 3 and the surface of the one-way valve to remove foreign objects. After cleaning, reassemble the plastic spring hose 2 onto the cast iron drain clip 1, and then insert the assembly into the drain base to complete the reset.

[0033] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention, and will not be elaborated here either.

[0034] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A clog-resistant floor drain clip structure, characterized in that, Includes cast iron drain clips, plastic spring hoses, and reamer turntables; The cast iron drain clip is movably attached to the drain base, and the plastic spring hose is detachably mounted below the cast iron drain clip. The cast iron drain clip contains a one-way valve and a reamer turntable, with the reamer turntable located directly above the one-way valve.

2. The anti-clogging drain clip structure as described in claim 1, characterized in that, The one-way valve includes a baffle and a one-way hinge; One side of the baffle is hinged to the inner wall of the bottom opening of the cast iron drain clip via the one-way hinge, so that the baffle can only be opened in one direction to the plastic spring hose. A torsion spring is fitted on the pivot of the one-way hinge. One end of the torsion spring is fixedly connected to the inner wall of the cast iron drain clip, and the other end is fixedly connected to the side wall of the baffle. The torsion spring always applies an elastic force to the baffle in the closing direction. When the water flow impact force is greater than the sum of the torsion spring force and the magnetic attraction force, the baffle opens to the plastic spring hose side. After the water flows out, the baffle returns to its original position and closes under the action of the torsion spring force.

3. The anti-clogging drain clip structure as described in claim 1, characterized in that, The cast iron drain clip has a rubber sealing layer on its side wall for engaging with the drain base, and the rubber sealing layer is continuously distributed circumferentially along the side wall.

4. The anti-clogging drain clip structure as described in claim 1, characterized in that, The wall thickness of the plastic spring hose is 0.9 to 1.1 mm.

5. The anti-clogging drain clip structure as described in claim 1, characterized in that, The reamer turntable includes two layers of blades that cooperate with each other. The lower blade is fixedly connected to the inner wall of the cast iron drain clip, and the upper blade can rotate relative to the lower blade around its own axis. The lower surface of the upper blade is in close contact with the upper surface of the lower blade.

6. The anti-clogging drain clip structure as described in claim 5, characterized in that, The upper blade has an integrally formed rotating handle in the middle position, and the outer wall of the rotating handle is provided with anti-slip texture.

7. The anti-clogging drain clip structure as described in claim 1, characterized in that, The plastic spring hose is made of nylon.