Odor-resistant sealing structure of floor drain

Abstract

The utility model provides a deodorization sealing structure of a floor drain, and belongs to the technical field of floor drains. The technical problem that an existing floor drain core is insufficient in deodorization and sealing effect is solved. The floor drain comprises an installation frame, the installation frame is provided with a water drainage hole, the installation frame is connected with a sealing ring arranged around the water drainage hole, the deodorization sealing structure comprises a core, magnets are arranged in the installation frame and the core so that the core can always tend to move upwards, and the core comprises a disc-shaped sealing cover and a vertically-arranged guide rod. The magnet piece is located in the guide rod, the lower end of the guide rod is inserted into the installation frame in a sliding mode, the sealing cover faces upwards and abuts against the sealing ring, a flaring-shaped groove with a downward opening is formed in the center of the bottom face of the sealing cover, and the upper end of the guide rod is located in the groove and makes contact with the inner wall of the groove in the circumferential direction. A gap is reserved between the top of the upper end of the guide rod and the inner wall of the groove in the radial direction. The sealing device can be adaptively finely adjusted according to the flatness condition of the sealing ring so as to ensure uniform circumferential sealing.

Description

Technical Field

[0001] This utility model belongs to the field of floor drain technology and relates to an odor-proof sealing structure for floor drains. Background Technology

[0002] Floor drains are an important interface connecting the drainage pipe system to the indoor floor. As a crucial component of the drainage system in residences, they are also widely used in same-floor drainage systems. With people's increasing demands for quality of life, floor drains, as an essential part of the residential drainage system, not only fulfill their function of connecting to the sewer pipes, but also require increasingly higher standards for their functions in preventing odors, harmful gases, insects, and germs from entering.

[0003] Patent CN210369244U discloses a drain core for a floor drain, comprising a body and a core. The body includes an upper section and a lower section connected by threads. The lower part of the upper section is provided with an annular protrusion. A sealing element is provided between the upper section and the lower end. The sealing element includes a connecting section and a sealing section. The inner wall of the connecting section is provided with an annular groove, and the outer wall of the connecting section is provided with a ridge ring. The ridge ring presses against the connecting section, so that the inner wall of the connecting section abuts against the upper section, and the sealing element is not easily moved during use.

[0004] The above-mentioned drain core products have a certain sealing and odor-proof effect through the cooperation of the core and the sealing ring, but there are still some shortcomings: the sealing ring itself has a certain positional error during installation, and the sealing ring may warp and deviate after long-term use. At this time, when the core is facing upward and abutting against the sealing ring, it is difficult to guarantee a sufficient sealing and odor-proof effect. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in existing technologies by providing an odor-proof and sealing structure for floor drains. The technical problem this utility model aims to solve is that the existing floor drain cores have insufficient odor-proof and sealing effects.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An odor-proof sealing structure for a floor drain includes a mounting bracket with a drain hole. A sealing ring arranged around the drain hole is connected to the mounting bracket. The odor-proof sealing structure includes a core. Magnets are provided inside both the mounting bracket and the core, causing the core to always tend to move upwards. The core includes a disc-shaped sealing cap and a vertically arranged guide rod. The magnets are located inside the guide rod, and the lower end of the guide rod is slidably inserted into the mounting bracket. The sealing cap faces upwards and abuts against the sealing ring. The bottom center of the sealing cap has a downward-facing, flared groove. The upper end of the guide rod is located within the groove and contacts the inner wall of the groove circumferentially. A radial gap exists between the top of the upper end of the guide rod and the inner wall of the groove.

[0008] By setting the core, which includes a sealing cap and a guide rod, the magnet is placed inside the guide rod, and a downward-facing, flared groove is set in the center of the bottom surface of the sealing cap. The upper end of the guide rod is inserted into the groove and makes contact with the inner wall of the groove circumferentially. There is space between the top of the upper end of the guide rod and the corresponding inner wall of the groove for the sealing cap to deflect relative to the upper end of the guide rod. In this way, when the sealing cap is impacted by water flow and moves downward, it can push the guide rod downward while being radially limited by the upper end of the guide rod to prevent it from shifting. When resetting, the guide rod moves upward under magnetic force, pushing the sealing cap upward. When it comes into contact with the sealing ring, even if it is misaligned due to installation errors or warped due to long-term use, part of the sealing cap will first contact the lower part of the sealing ring. At this time, the part of the sealing cap that contacts first can be forcefully deflected downward around the position where the guide rod contacts the inner wall of the groove. Ultimately, the sealing cap can adaptively fine-tune the deflection angle according to the flatness of the sealing ring, still ensuring uniform circumferential sealing and improving the sealing effect.

[0009] In the aforementioned odor-proof sealing structure of the floor drain, the upper end of the guide rod includes a connecting section whose radial dimension gradually increases from top to bottom. The outer periphery of the connecting section with the larger radial dimension contacts the inner wall of the groove along the circumferential direction. This makes the shape of the inner wall of the groove more compatible with that of the connecting section, resulting in a smaller radial interval between them from top to bottom. This helps to constrain the sealing cover and prevent it from deflecting too much, ensuring the stability of the sealing cover's position.

[0010] In the aforementioned odor-proof sealing structure of the floor drain, the outer peripheral surface of the connecting section is concave arc-shaped, and the inner wall of the groove is an arc-shaped surface that arches towards the side where the connecting section is located. This allows for a smaller gap size in the area near the contact point between the outer peripheral surface of the connecting section and the inner wall of the groove, which helps the sealing cap to remain more stably on the upper end of the guide rod when it is not in contact with the sealing ring.

[0011] In the aforementioned odor-proof sealing structure of the floor drain, the upper edge of the guide rod is rounded. This facilitates smoother movement when the sealing cover deflects relative to the guide rod, preventing the edge from scraping and causing obstruction during deflection.

[0012] In the aforementioned odor-proof sealing structure of the floor drain, the sealing cap is bowl-shaped with its opening facing upwards, and the mounting bracket has a tubular, downward-protruding drain tube. The inner cavity of the drain tube forms the drain hole, and the lower end of the drain tube is located within the inner cavity of the sealing cap. The upper edge of the sealing cap seals against the sealing ring. This allows water to be stored inside the sealing cap during drainage, and the lower end of the drain tube extending into the water inside the sealing cap creates a water seal, improving odor prevention and sealing. Even after the water dries, the mechanical seal between the sealing cap and the sealing ring still provides odor prevention.

[0013] In the aforementioned odor-proof sealing structure of the floor drain, the mounting bracket is cylindrical, and the sealing cover is located inside the mounting bracket. The outer diameter of the sealing cover is slightly smaller than the inner diameter of the mounting bracket. This design further constrains the sealing cover as it moves up and down, preventing excessive deflection and ensuring proper operation.

[0014] In the aforementioned odor-proof sealing structure of the floor drain, the portion of the mounting bracket located directly below the sealing cover has a vertically penetrating drainage hole. This facilitates the smooth drainage of some of the water that has seeped into the space between the bottom of the sealing cover and the lower mounting bracket, while simultaneously balancing the air pressure above and below the sealing cover, preventing water accumulation and obstruction of repositioning.

[0015] In the aforementioned odor-proof sealing structure of the floor drain, the upper edge of the sealing cap has an inward or outward folded edge. This increases the contact area between the sealing cap and the sealing ring, ensuring a good seal, while also preventing sharp edges from damaging the sealing ring and extending its service life.

[0016] In the aforementioned odor-proof sealing structure of the floor drain, the bottom outer edge of the sealing cover is chamfered. During the downward movement of the sealing cover, it will be impacted by water flow and experience irregular deflection. This chamfered surface helps guide the downward movement of the sealing cover, preventing interference between its outer edge and the drain outlet edge on the mounting bracket, thus avoiding jamming.

[0017] In the aforementioned odor-proof sealing structure of the floor drain, the sealing cover is made of stainless steel. This helps prevent corrosion, ensures service life, and also helps maintain shape stability.

[0018] Compared with the prior art, the advantages of this utility model are as follows:

[0019] The sealing cap in the odor-proof sealing structure of the floor drain can adaptively adjust its angle according to the actual situation of the sealing ring, so as to achieve a uniform seal around the circumference of the sealing ring and ensure the sealing and odor-proof effect of the floor drain. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0021] Figure 2 This is a top view of the structure of this embodiment.

[0022] Figure 3 yes Figure 2 A schematic diagram of the AA cross section.

[0023] Figure 4 yes Figure 3 Enlarged view of part B in the image.

[0024] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of this embodiment.

[0025] Figure 6 This is a cross-sectional structural diagram of the sealing cover in the open state in this embodiment.

[0026] In the diagram, 1 is the mounting bracket; 11 is the drainage hole; 12 is the drain outlet; 13 is the drain hole; and 14 is the drain tube.

[0027] 2. Magnetic components; 3. Sealing rings;

[0028] 4. Core; 41. Sealing cap; 411. Groove; 412. Flanged edge; 42. Guide rod; 421. Connecting section. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1-6 As shown, in the odor-proof sealing structure of the floor drain, the floor drain includes a mounting frame 1, which has a vertically penetrating drain hole 13. More specifically, the mounting frame 1 includes a downwardly extending drain tube 14, the drain hole 13 is formed in the inner cavity of the drain tube 14, the drain tube 14 is inserted into the body of the mounting frame 1, and a sealing ring 3 is sleeved around the drain tube 14. The odor-proof sealing structure includes a core 4, and magnets 2 are provided in both the mounting frame 1 and the core 4. The two magnets 2 are of the same pole facing each other, so that the core 4 is always subjected to an upward magnetic repulsion force. The mounting frame 1 is the main frame of the floor drain core. The core 4 generates a magnetic levitation effect when working due to the repulsion between the downward-facing magnets 2 inside the core 4 and the magnets 2 in the mounting frame 1 below. At the same time, when the core 4 is not working, it is subjected to an upward force and forms a push against the sealing ring 3 until it is impacted by the water flow when draining and then moves down to open. Specifically, the core 4 includes a disc-shaped sealing cover 41 and a vertically arranged guide rod 42. The magnet 2 is located inside the guide rod 42. The lower end of the guide rod 42 is slidably inserted into the mounting bracket 1. The sealing cover 41 faces upward and abuts against the sealing ring 3. The sealing cover 41 is made of stainless steel. The bottom center of the sealing cover 41 has an upwardly arched opening and a downwardly flared groove 411. The upper end of the guide rod 42 is located inside the groove 411 and contacts the inner wall of the groove 411 circumferentially, so that there is a gap between the outer periphery of the top of the upper end of the guide rod 42 and the inner wall of the groove 411. Specifically, the upper end of the guide rod 42 includes a connecting section 421 whose radial dimension gradually increases from top to bottom. The outer periphery of the connecting section 421 is concave arc-shaped and forms contact with the inner wall of the groove 411 along the circumferential direction. The inner wall of the groove 411 is arc-shaped and arches towards the connecting section 421. The edge of the upper end of the guide rod 42 is rounded.

[0031] like Figure 3 , Figure 5-6As shown, the sealing cap 41 is bowl-shaped with its opening facing upwards. The lower end of the drain pipe 14 is located inside the cavity of the sealing cap 41, and the upper edge of the sealing cap 41 abuts against the sealing ring 3. Furthermore, the mounting bracket 1 is cylindrical, with a drain outlet 12 on its outer periphery. The sealing cap 41 is located inside the mounting bracket 1, and the outer diameter of the sealing cap 41 is slightly smaller than the inner diameter of the mounting bracket 1. The portion of the mounting bracket 1 directly below the sealing cap 41 has a vertically penetrating drain hole 11. The upper edge of the sealing cap 41 has an inwardly bent flange 412, and the bottom outer edge of the sealing cap 41 is chamfered.

[0032] The sealing cap 41 allows for a slight offset of the space relative to the upper end of the guide rod 42, thereby accommodating the deflection of the sealing ring 3 and achieving a uniform circumferential seal; after water is introduced, the sealing cap 41 is filled with water, such as Figure 6 As shown, at this time, the sealing cap 41 can move downward under the action of gravity of the water to overcome the magnetic repulsion. The lower end of the water cylinder 14 can still be designed to be lower than the upper edge of the sealing cap 41, so that the water cylinder 14 can be inserted into the water stored in the sealing cap 41 to achieve a water seal effect. After the water dries up, the sealing cap 41 can remain in contact with the sealing ring 3 under the action of magnetic repulsion.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An odor-proof sealing structure for a floor drain, the floor drain comprising a mounting bracket (1) having a drain hole (13), a sealing ring (3) arranged around the drain hole (13) connected to the mounting bracket (1), the odor-proof sealing structure comprising a core (4), wherein magnets (2) are provided inside the mounting bracket (1) and inside the core (4) to make the core (4) always have an upward tendency, characterized in that, The core (4) includes a disc-shaped sealing cover (41) and a vertically arranged guide rod (42). The magnet (2) is located inside the guide rod (42). The lower end of the guide rod (42) is slidably inserted into the mounting bracket (1). The sealing cover (41) faces upward and abuts against the sealing ring (3). The bottom center of the sealing cover (41) has an open groove (411) with an flared shape facing downward. The upper end of the guide rod (42) is located inside the groove (411) and forms contact with the inner wall of the groove (411) circumferentially. The top of the upper end of the guide rod (42) is radially spaced from the inner wall of the groove (411).

2. The odor-proof sealing structure of the floor drain according to claim 1, characterized in that, The upper end of the guide rod (42) includes a connecting section (421) whose radial dimension gradually increases from top to bottom. The outer periphery of the connecting section (421) with the larger radial dimension contacts the inner wall of the groove (411) in the circumferential direction.

3. The odor-proof sealing structure of the floor drain according to claim 2, characterized in that, The outer peripheral surface of the connecting segment (421) is concave arc surface, and the inner wall of the groove (411) is arc surface that arches towards the side where the connecting segment (421) is located.

4. The odor-proof sealing structure of the floor drain according to claim 1, 2, or 3, characterized in that, The upper edge of the guide rod (42) is rounded.

5. The odor-proof sealing structure of the floor drain according to claim 1, 2, or 3, characterized in that, The sealing cap (41) is bowl-shaped with its opening facing upwards. The mounting bracket (1) has a tubular drain tube (14) that protrudes downwards. The inner cavity of the drain tube (14) forms the drain hole (13). The lower end of the drain tube (14) is located in the inner cavity of the sealing cap (41). The upper edge of the sealing cap (41) is sealed against the sealing ring (3).

6. The odor-proof sealing structure of the floor drain according to claim 5, characterized in that, The mounting bracket (1) is cylindrical, and the sealing cover (41) is located inside the mounting bracket (1). The outer diameter of the sealing cover (41) is slightly smaller than the inner diameter of the mounting bracket (1).

7. The odor-proof sealing structure of the floor drain according to claim 6, characterized in that, The portion of the mounting bracket (1) located directly below the sealing cover (41) has a vertically penetrating drainage hole (11).

8. The odor-proof sealing structure of the floor drain according to claim 5, characterized in that, The upper edge of the sealing cap (41) has a flange (412) that is bent inward or outward.

9. The odor-proof sealing structure of the floor drain according to claim 6, characterized in that, The bottom outer edge of the sealing cap (41) is chamfered.

10. The odor-proof sealing structure of the floor drain according to claim 1, 2, or 3, characterized in that, The sealing cap (41) is made of stainless steel.

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