Odor-resistant and insect-resistant floor drain core
By designing a sealing structure and adjusting the relative position of the sealing plates, the problem of poor sealing performance of spring-loaded drain cores is solved, achieving highly efficient odor and insect prevention. The structure is simple and the performance is excellent.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AN HUI SHENG MING WEI CHU WEI GU FEN YOU XIAN GONG SI
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-19
AI Technical Summary
Existing spring-loaded drain cores deteriorate in sealing performance after prolonged use, resulting in poor odor and insect prevention, and poor sealing performance.
The sealing structure includes a fixed ring, a connecting frame, a movable connecting rod, a limiting block, a return spring, and a hexagonal groove. By cooperating with the movable connecting rod and the conical rubber pad, the relative position of the sealing plate is adjusted, and the compression degree of the return spring is changed to ensure the sealing effect.
It improves the sealing performance of the drain core, effectively preventing odors from escaping and insects from entering, maintaining a long-lasting odor-proof and insect-proof effect. It has a simple structure and excellent performance.
Smart Images

Figure CN224259552U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of floor drain cores, and in particular to an odor-proof and insect-proof floor drain core. Background Technology
[0002] A drain core is a device installed at the drain opening. By installing the drain core, it can prevent the odor from the sewer from escaping, prevent insects from flying out of the sewer opening, and prevent the sewer opening from being blocked by debris. Proper installation of a drain core can achieve the effects of preventing odor, preventing backflow, preventing insects, and preventing bacteria.
[0003] Most existing drain cores are spring-loaded structures, utilizing the elastic force of the spring to open and close the sealing cap. When draining, the weight of the water causes the cap to open, allowing water to drain; when not draining, the cap closes under the spring's pressure. However, in existing spring-loaded drain cores, the relative compression of the spring cannot be adjusted. After prolonged use, the spring's effectiveness deteriorates, resulting in the cap not closing completely and allowing odors to escape. Furthermore, the cap is usually made of metal or plastic, which results in poor sealing when closed, also leading to odors. The odor-preventing effect is mediocre. Additionally, because the cap cannot close completely, small insects can enter the drain core through gaps and eventually enter the house, resulting in poor insect prevention. Utility Model Content
[0004] The main purpose of this utility model is to provide an odor-proof and insect-proof floor drain core, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An odor-proof and insect-proof drain core includes a mounting bracket and a drain core body. The mounting bracket is fixedly connected to the drain core body, and a sealing sleeve is fitted on the drain core body. A filter frame is provided on the mounting bracket, and a sealing structure is installed on the drain core body.
[0007] Preferably, the sealing sleeve is fitted onto the drain core body, and the upper end of the sealing sleeve is in contact with the mounting bracket.
[0008] Preferably, the mounting bracket is provided with a drainage cavity that communicates with the drain core body, the filter frame is disposed in the drainage cavity on the mounting bracket, and a round hole is provided in the middle position of the filter frame.
[0009] Preferably, a handle is fixed inside the drainage cavity on the mounting top frame, and two handles are symmetrically arranged in the drainage cavity on the mounting top frame.
[0010] Preferably, the sealing structure includes a fixed ring, a connecting frame, a movable connecting rod, a limiting block, a return spring, and a hexagonal groove. The fixed ring is fixedly connected to the connecting frame and is fixedly disposed on the inner wall of the drain core body. The movable connecting rod is fixedly connected to the limiting block and passes through the connecting frame. The return spring is sleeved on the movable connecting rod, and both ends of the return spring contact the connecting frame and the limiting block respectively. The hexagonal groove is formed on the limiting block.
[0011] Preferably, the sealing structure further includes a connecting screw, a sealing plate, a conical rubber pad, and a guide rod. The connecting screw is fixed to the lower end of the movable connecting rod. The sealing plate and the conical rubber pad are connected together, and the sealing plate is fixedly connected to the guide rod. The guide rod passes through the conical rubber pad, and the upper end of the guide rod passes through the connecting frame. The lower end of the connecting screw passes through the conical rubber pad and is threadedly connected to the sealing plate.
[0012] Compared with existing technologies, this utility model has the following advantages: The odor-proof and insect-proof drain core, through its sealing structure, features a movable connecting rod on a connecting frame. A sealing plate is mounted on the lower end of the movable connecting rod via a connecting screw. A conical rubber pad is mounted on the sealing plate. When sealing and closing, the conical rubber pad contacts the lower end of the drain core body, improving the sealing effect and effectively ensuring the odor-proof performance of the entire drain core. A limiting block with a hexagonal groove is provided at the upper end of the movable connecting rod, allowing the relative position of the sealing plate to be adjusted by rotating the movable connecting rod. This changes the compression degree of the return spring after the conical rubber pad on the sealing plate contacts the lower end of the drain core body. This ensures the closing effect of the sealing plate even after the return spring's effectiveness deteriorates over time, guaranteeing the odor-proof and insect-proof effect. The structure is simple, and the performance is excellent. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the internal structure of the drain core of this utility model;
[0015] Figure 3 This is a schematic diagram of the sealing structure of this utility model.
[0016] In the diagram: 1. Mounting bracket; 2. Drain core body; 3. Sealing sleeve; 4. Filter frame; 5. Sealing structure; 501. Fixing ring; 502. Connecting frame; 503. Movable connecting rod; 504. Limiting block; 505. Return spring; 506. Hexagonal groove; 507. Connecting screw; 508. Sealing plate; 509. Conical rubber pad; 510. Guide rod; 6. Round hole; 7. Drainage chamber; 8. Handle. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0018] like Figures 1-3 As shown, an odor-proof and insect-proof floor drain core includes a mounting bracket 1 and a floor drain core body 2. The mounting bracket 1 and the floor drain core body 2 are fixedly connected, and a sealing sleeve 3 is fitted onto the floor drain core body 2. A filter frame 4 is provided on the mounting bracket 1, and a sealing structure 5 is installed on the floor drain core body 2. The sealing sleeve 3 is fitted onto the floor drain core body 2, and the upper end of the sealing sleeve 3 is in contact with the mounting bracket 1. The mounting bracket 1 has a drainage cavity 7 that communicates with the floor drain core body 2. The filter frame 4 is disposed in the drainage cavity 7 on the mounting bracket 1, and a round hole 6 is provided at the middle position of the filter frame 4. A carrying handle 8 is fixed inside the drainage cavity 7 on the mounting bracket 1, and two carrying handles 8 are symmetrically arranged in the drainage cavity 7 on the mounting bracket 1.
[0019] When installing the drain core, the sealing structure 5 is installed on the drain core body 2, and the sealing sleeve 3 is fitted onto the drain core body 2. The drain core body 2 and the mounting bracket 1 are then placed at the drain. The sealing sleeve 3 is used to seal the connection of the pipes. The filter bracket 4 is then installed into the drainage chamber 7 for use. During use, when no drainage is being applied, the sealing structure 5 seals the lower end of the drain core body 2, preventing backflow of odors and effectively preventing smells and insects.
[0020] When draining, the sewage water passes through the filter frame 4 at the mounting bracket 1, where hair and other impurities are intercepted. The water then passes through the filter frame 4 into the drain chamber 7, and subsequently flows into the drain core body 2. Under the influence of gravity, the sealing structure 5 opens to allow drainage. After drainage is complete, the sealing structure 5 resets to continue sealing. If necessary, the filter frame 4 can be removed for hair removal. If the entire drain core needs to be disassembled, the filter frame 4 can be removed, and the remaining parts of the drain core can be removed using the handle 8.
[0021] According to the above implementation scheme, the sealing structure 5 includes a fixed ring 501, a connecting frame 502, a movable connecting rod 503, a limiting block 504, a return spring 505, and a hexagonal groove 506. The fixed ring 501 is fixedly connected to the connecting frame 502 and is fixedly installed on the inner wall of the drain core body 2. The movable connecting rod 503 is fixedly connected to the limiting block 504 and passes through the connecting frame 502. The return spring 505 is sleeved on the movable connecting rod 503 and both ends of the return spring 505 contact the connecting frame 502 and the limiting block 504 respectively. The hexagonal groove 506 is opened on the limiting block 504.
[0022] The sealing structure 5 also includes a connecting screw 507, a sealing plate 508, a conical rubber pad 509, and a guide rod 510. The connecting screw 507 is fixed to the lower end of the movable connecting rod 503. The sealing plate 508 and the conical rubber pad 509 are connected together, and the sealing plate 508 is fixedly connected to the guide rod 510. The guide rod 510 passes through the conical rubber pad 509, and the upper end of the guide rod 510 passes through the connecting frame 502. The lower end of the connecting screw 507 passes through the conical rubber pad 509 and is threadedly connected to the sealing plate 508.
[0023] When using the sealing structure 5, without drainage, the limiting block 504, along with the movable connecting rod 503, tends to move upwards due to the action of the return spring 505 on the connecting frame 502. The conical rubber pad 509 on the sealing plate 508, installed via the connecting screw 507, contacts the lower end of the drain core body 2. The conical rubber pad 509, in conjunction with the sealing plate 508, seals the lower end of the drain core body 2, preventing odors and insects. When drainage occurs, under the force of gravity, the conical rubber pad 509 and the sealing plate 508 descend away from the drain core body 2, and water drains out through the open gap. During this process, the limiting block 504 and the movable connecting rod 503 descend, compressing the return spring 505, while the guide rod 510 moves along the connecting frame 502 to provide stability. After the water has drained, the limiting block 504 and the movable connecting rod 503 rise back to their original positions under the elastic force of the return spring 505, and the conical rubber pad 509 contacts the drain core body 2 again to complete the seal.
[0024] When needed, the tool can be connected to the hexagonal slot 506 through the round hole 6. By rotating the movable connecting rod 503 through the limit block 504, the connecting screw 507 will rotate together. Under the action of the guide rod 510, the closing plate 508 will not rotate together, thus moving up and down along the connecting screw 507. This changes the compression degree of the return spring 505 after the closing plate 508 is closed in conjunction with the conical rubber pad 509, making it flexible and convenient to use.
[0025] It should be noted that, through the sealing structure 5, a movable connecting rod 503 is set on the connecting frame 502. The lower end of the movable connecting rod 503 is connected to the sealing plate 508 via the connecting screw 507. A conical rubber pad 509 is set on the sealing plate 508. When sealing and closing, the conical rubber pad 509 contacts the lower end of the drain core body 2, improving the sealing effect and effectively ensuring the odor-proof performance of the entire drain core. A limiting block 504 with a hexagonal groove 506 is set on the upper end of the movable connecting rod 503. The relative position of the sealing plate 508 can be adjusted by rotating the movable connecting rod 503, thereby changing the compression degree of the return spring 505 after the conical rubber pad 509 on the sealing plate 508 contacts the lower end of the drain core body 2. This ensures the closing effect of the sealing plate even after the return spring 505 deteriorates over time, thus ensuring the odor-proof and insect-proof effect. The structure is simple and the performance is excellent.
[0026] The foregoing describes the working principle, features, and beneficial effects of this utility model. Those skilled in the art will understand from the foregoing that it does not limit the utility model. The embodiments and description above illustrate the basic principles and features of this utility model. Various changes and improvements can be made to this utility model while remaining consistent with its concept, and all such improvements should fall within the scope of protection claimed by this utility model.
Claims
1. An odor-proof and insect-proof floor drain core, comprising a mounting bracket (1) and a floor drain core body (2), wherein the mounting bracket (1) is fixedly connected to the floor drain core body (2), and a sealing sleeve (3) is fitted onto the floor drain core body (2), characterized in that: The mounting bracket (1) is equipped with a filter frame (4), and the drain core body (2) is equipped with a sealing structure (5).
2. The odor-proof and insect-proof drain core according to claim 1, characterized in that: The sealing sleeve (3) is fitted onto the drain core body (2), and the upper end of the sealing sleeve (3) is in contact with the mounting bracket (1).
3. The odor-proof and insect-proof drain core according to claim 2, characterized in that: The mounting bracket (1) is provided with a drainage cavity (7) that communicates with the drain core body (2). The filter frame (4) is set in the drainage cavity (7) on the mounting bracket (1), and a round hole (6) is provided in the middle position of the filter frame (4).
4. The odor-proof and insect-proof drain core according to claim 3, characterized in that: A handle (8) is fixed inside the drainage cavity (7) on the mounting top frame (1), and two handles (8) are symmetrically arranged in the drainage cavity (7) on the mounting top frame (1).
5. The odor-proof and insect-proof drain core according to claim 4, characterized in that: The sealing structure (5) includes a fixed ring (501), a connecting frame (502), a movable connecting rod (503), a limiting block (504), a return spring (505), and a hexagonal groove (506). The fixed ring (501) is fixedly connected to the connecting frame (502) and is fixedly installed on the inner wall of the drain core body (2). The movable connecting rod (503) is fixedly connected to the limiting block (504) and passes through the connecting frame (502). The return spring (505) is sleeved on the movable connecting rod (503) and both ends of the return spring (505) contact the connecting frame (502) and the limiting block (504) respectively. The hexagonal groove (506) is opened on the limiting block (504).
6. The odor-proof and insect-proof floor drain core according to claim 5, characterized in that: The sealing structure (5) further includes a connecting screw (507), a sealing plate (508), a conical rubber pad (509), and a guide rod (510). The connecting screw (507) is fixed to the lower end of the movable connecting rod (503). The sealing plate (508) and the conical rubber pad (509) are connected together, and the sealing plate (508) is fixedly connected to the guide rod (510). The guide rod (510) passes through the conical rubber pad (509), and the upper end of the guide rod (510) passes through the connecting frame (502). The lower end of the connecting screw (507) passes through the conical rubber pad (509) and is threadedly connected to the sealing plate (508).