Clean closed floor drain for clean room
By using sealing rings and stainless steel design in the clean room floor drain, the existing water-sealed floor drain is easily contaminated with the clean room, achieving sealing and smooth drainage, and complying with the medical clean room standards.
Patent Information
- Application Number
- CN202422580277.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing water-sealed floor drain is prone to cause odors, pests, bacteria, viruses, etc. to enter the clean room, which has poor self-cleaning ability and affects environmental quality.
A clean and sealed floor drain is designed, and a sealing ring between the cover plate and the floor drain neck is sealed, combining stainless steel material and water-free sealing structure to ensure sealing and easy cleaning.
Effectively prevent odors, bacteria, viruses, etc. from entering the clean room, prevent pollution, and drain smoothly, not easily blocked, and comply with GMP and FDA certification requirements.
Smart Images
Figure CN223293142U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of floor drains, and in particular relates to a clean and sealed floor drain for a clean room. Background Art
[0002] The design and construction standards for biopharmaceutical cleanrooms are designed to strictly control the levels of airborne particles, microorganisms, and other contaminants, ensuring that the cleanroom meets specific cleanliness standards. In cleanroom environments, the design of drainage systems, especially floor drains, is crucial because they directly impact air quality and microbial contamination control.
[0003] Currently, the most common floor drain design uses a 304 stainless steel water-seal floor drain. This type of drain features a bell-shaped structure that snaps onto the drain outlet like a bowl, forming a U-shaped trap. The trap's "water seal" creates a seal. However, most water-seal floor drains have drainage holes in their covers, which can easily become pathways for odors, pests, fungi, and viruses to enter the cleanroom. Furthermore, these drains have poor self-cleaning capabilities and are prone to clogging, resulting in slow drainage and impacting the overall cleanroom environment. Utility Model Content
[0004] In order to solve the problems existing in the prior art, the utility model aims to propose a clean and sealed floor drain for clean rooms. The clean and sealed floor drain solves the problem that the existing water-sealed floor drain easily allows odors, pests, fungi, viruses, etc. to directly contact the clean room environment, easily polluting the environment.
[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:
[0006] A clean and sealed floor drain for a clean room comprises a floor drain cover, a floor drain body and a sealing ring. The top of the floor drain cover is a cover plate, and the bottom of the cover plate is provided with a floor drain neck; the cover plate cooperates with the upper part of the floor drain body and is placed in the floor drain body, the floor drain neck cooperates with the lower part of the floor drain body and is placed in the floor drain body, and a sealing ring is provided between the floor drain neck and the floor drain body; the floor drain body is fixed to the ground, and the lower end is connected to a water pipe, and the water pipe is provided with a water trap.
[0007] Furthermore, the floor drain body is hollow in design, the upper cross-section that matches the cover plate is a trapezoid that is wide at the top and narrow at the bottom, and the lower cross-section that matches the floor drain neck is cylindrical.
[0008] Furthermore, the inner wall of the floor drain body is provided with a groove for installing a sealing ring.
[0009] Furthermore, the sealing ring is an O-ring, and the number is at least one.
[0010] Furthermore, the height of the floor drain body is 300 mm higher than the floor of the clean room.
[0011] Furthermore, the cover plate is matched with the upper part of the floor drain body, and the upper end surface of the cover plate is a square structure.
[0012] Furthermore, the diagonal corners of the cover plate are connected to the upper part of the floor drain body by screws.
[0013] Furthermore, the screws are made of stainless steel.
[0014] Furthermore, the floor drain neck is a hollow cylinder.
[0015] Furthermore, the floor drain cover and the floor drain body are made of stainless steel plate.
[0016] Compared with the prior art, the clean and sealed floor drain for clean rooms described in the present invention has the following advantages:
[0017] (1) The clean and sealed floor drain for clean rooms described in the utility model has the upper part of the floor drain neck sealed by a cover plate, and a sealing ring is provided between the floor drain neck and the floor drain body, so that the floor drain cover and the floor drain body are tightly sealed, effectively preventing odors, fungi, viruses, etc. in the water stored in the water pipe from spreading into the clean room, and meeting the relevant requirements of GMP and FDA certification for pharmaceutical clean rooms.
[0018] (2) The clean and sealed floor drain for clean rooms described in the utility model has a cover plate connected to the upper end of the floor drain body by screws to prevent sewage and exhaust gas in the pressurized drainage pipe from pushing the floor drain cover open; the floor drain cover and the floor drain body are made of stainless steel, and the inner and outer surfaces are mechanically polished. The smooth stainless steel surface reduces the accumulation of garbage and debris. If foreign matter enters the floor drain neck and the floor drain body, it is easy to clean, making drainage smoother and less likely to cause blockage. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:
[0020] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present utility model;
[0021] Figure 2 A schematic diagram of a floor drain disassembly provided in an embodiment of the present utility model;
[0022] Figure 3 This is a schematic diagram of the top of a floor drain provided in an embodiment of the present utility model.
[0023] Description of reference numerals:
[0024] 1. Floor drain cover; 11. Cover plate; 12. Floor drain neck; 2. Floor drain body; 21. Groove; 3. Sealing ring; 4. Screws. DETAILED DESCRIPTION
[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.
[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0029] like Figures 1 to 3 As shown, a clean and sealed floor drain for a clean room includes a floor drain cover 1, a floor drain body 2 and a sealing ring 3. The top of the floor drain cover 1 is a cover plate 11, and the bottom of the cover plate 11 is provided with a floor drain neck 12; the cover plate 11 cooperates with the upper inner part of the floor drain body 2 and is placed in the floor drain body 2, the floor drain neck 12 cooperates with the lower inner part of the floor drain body 2 and is placed in the floor drain body 2, and a sealing ring 3 is provided between the floor drain neck 12 and the floor drain body 2; the floor drain body 2 is fixed to the ground, and the lower end is connected to a water pipe, and the water pipe is provided with a water trap.
[0030] The clean and sealed floor drain for a clean room described in the utility model has an upper end of the floor drain neck sealed by a cover plate, and a sealing ring is provided between the floor drain neck and the floor drain body, so that the floor drain cover and the floor drain body are tightly sealed, effectively preventing odors, fungi, viruses, etc. in the water stored in the water pipe from spreading into the clean room, and meeting the relevant requirements of GMP and FDA certification for pharmaceutical clean rooms.
[0031] In a preferred embodiment of the present invention, the floor drain body 2 is hollow in design, the upper cross-section matching the cover plate 11 is a trapezoid with a wide top and a narrow bottom, and the lower section matching the floor drain neck 12 is cylindrical.
[0032] The inner wall of the floor drain body 2 is provided with a groove 21 for installing the sealing ring 3.
[0033] In actual use, the trapezoidal cross-section design of the upper portion of the floor drain body 2 helps to concentrate water flow, guide water flow more smoothly through the floor drain, reduce water stagnation at the floor drain, reduce the deposition of debris inside the floor drain, and thus reduce the possibility of blockage. The lower portion of the floor drain body 2 is cylindrical, and there is no other structure inside except the sealing ring 3 and the groove. If foreign matter enters, it is easy to clean, which is convenient for maintenance and cleaning work. At the same time, the cylindrical lower portion provides a regular interface for connecting the floor drain body to the drainage pipe.
[0034] In this embodiment, the clean and sealed floor drain itself does not have a water seal device, so when installing the floor drain, a maintenance-type water trap needs to be installed in the water pipe below the floor drain mother body 2 to achieve a water seal effect and prevent odor and fungi from the water pipe from spreading into the room when the floor drain cover 1 is opened.
[0035] In a preferred embodiment of the present invention, the sealing ring 3 is an O-ring, and the number is at least one.
[0036] In this embodiment, two O-rings are used. Their elastic deformation fills the gap between the drain neck 12 and the drain body 2, forming an effective seal that effectively prevents odors, fungi, viruses, and other contaminants from the water in the pipes from spreading into the cleanroom. The O-rings are made of polytetrafluoroethylene (PTFE) or other high-temperature-resistant materials to minimize thermal expansion and contraction.
[0037] In a preferred embodiment of the present invention, the height of the floor drain main body 2 is 300 mm higher than the floor of the clean room.
[0038] In actual use, the floor drain body 2 is 300mm higher than the floor slab to ensure that there is enough space to form a water seal, effectively preventing the escape of odors and harmful gases in the sewer, while also reducing the possibility of the water seal drying up and avoiding the upwelling of sewer odors caused by water seal failure. At the same time, the floor drain body 2 is higher than the floor slab by a certain height, which is conducive to the connection and installation of the drainage pipe and can provide more space for the layout and maintenance of the pipe.
[0039] In a preferred embodiment of the present invention, the cover plate 11 is matched with the upper part of the floor drain body 2, and the upper end surface of the cover plate 11 is a square structure.
[0040] The diagonal corners of the cover plate 11 are connected to the upper part of the floor drain body 2 by screws 4.
[0041] In actual use, the cover plate 11 is provided with a screw hole at each diagonal position, and the corresponding position of the floor drain main body 2 is also provided with a screw hole, so that the cover plate 11 is connected to the floor drain main body 2 by screws 4. The cover plate 11 is a closed cover plate, and there are no other drainage holes except the screw holes. This ensures the sealing between the cover plate and the floor drain main body, effectively preventing odor and harmful gases from flowing back from the drainage system to the clean room environment, and at the same time increases the stability of the cover plate. Even if the sewage and exhaust gas pressure in the pressurized drainage pipe is high, it is not easy to push the cover plate 11 open, thereby avoiding the leakage of pollutants caused by accidental opening of the cover plate 11.
[0042] In a preferred embodiment of the present invention, the screw 4 is made of stainless steel.
[0043] In actual use, in this example, the screw 4 is a stainless steel cross screw. The hardness of the stainless steel screw is relatively low, and it does not need to be tightened too much each time it is used to prevent the screw head from being damaged.
[0044] In a preferred embodiment of the present invention, the floor drain neck 12 is a hollow cylinder.
[0045] In actual use, the cover plate 11 and the floor drain neck 12 are designed as an integral whole. The floor drain neck 12 is a hollow cylinder, which helps to maintain an effective water seal, effectively isolate the odor and harmful gases in the sewer, and improve the indoor air quality.
[0046] In a preferred embodiment of the present invention, the floor drain cover 1 and the floor drain body 2 are made of stainless steel plates.
[0047] In actual use, the material of the floor drain cover 1 and the floor drain body 2 is 304L stainless steel, and the inner and outer surfaces are mechanically polished. The smooth stainless steel surface reduces the accumulation of garbage and debris. If foreign matter enters the floor drain neck 12 and the floor drain body 2, it is easy to clean, making drainage smoother and less likely to cause blockage.
[0048] Working principle of clean and sealed floor drain for clean room:
[0049] When using the floor drain of the present invention, first use a screwdriver to remove the screw 4, then use a strong suction cup to suck the cover plate 11, and slowly raise the cover plate 11 and the floor drain neck 12. After drainage is completed, replace the floor drain cover 1, and slowly tighten the screw 4. The floor drain mainly relies on the O-ring between the floor drain neck 12 and the floor drain body 2 for sealing, so that no liquid remains after drainage (relative to a clean room environment). Maintenance only requires regular replacement of the O-ring and screws.
[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A clean and sealed floor drain for a clean room, characterized by: The invention comprises a floor drain cover (1), a floor drain body (2) and a sealing ring (3); the top of the floor drain cover (1) is a cover plate (11); the bottom of the cover plate (11) is provided with a floor drain neck (12); the cover plate (11) is matched with the upper inner portion of the floor drain body (2) and is placed in the floor drain body (2); the floor drain neck (12) is matched with the lower inner portion of the floor drain body (2) and is placed in the floor drain body (2); a sealing ring (3) is provided between the floor drain neck (12) and the floor drain body (2); the floor drain body (2) is fixed to the ground, and the lower end is connected to a water pipe, and the water pipe is provided with a water trap.
2. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The floor drain body (2) is hollow in design, the upper cross section of which matches the cover plate (11) is a trapezoid with a wide upper portion and a narrow lower portion, and the lower cross section of which matches the floor drain neck (12) is cylindrical.
3. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The inner wall of the floor drain body (2) is provided with a groove (21) for installing a sealing ring (3).
4. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The sealing ring (3) is an O-ring, and the number is at least one.
5. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The height of the floor drain mother body (2) is 300 mm higher than the floor of the clean room.
6. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The cover plate (11) is matched with the upper part of the floor drain body (2), and the upper end surface of the cover plate (11) is a square structure.
7. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The diagonal corners of the cover plate (11) are connected to the upper part of the floor drain body (2) via screws (4).
8. The clean and sealed floor drain for a clean room according to claim 7, characterized in that: The screws (4) are made of stainless steel.
9. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The floor drain neck (12) is a hollow cylinder.
10. The clean and sealed floor drain for a clean room according to claim 1, characterized in that: The floor drain cover (1) and the floor drain body (2) are made of stainless steel plates.