A siphon-type ultra-thin vegetable basin odor-proof drain

Abstract

This utility model discloses a siphon-type ultra-thin anti-odor drain for vegetable basins, relating to the technical field of vegetable basin drains. This utility model aims to solve the problems of poor anti-odor effect, difficult cleaning, slow drainage, cumbersome installation, and large space occupation in traditional vegetable basin drains. The utility model includes a drain housing with an open funnel-shaped cup installed inside. A screen-type filter basket is installed on the open funnel-shaped cup. An outlet is located in the middle of the side wall of the drain housing, with a baffle at the outlet. An overflow pipe inlet is located at the bottom of the side wall of the drain housing. The lower part of the open funnel-shaped cup tapers inward to form a funnel-shaped outlet, the bottom of which is lower than the baffle. The funnel-shaped outlet and the inner cavity of the drain housing form a siphon channel. The taper design of the funnel-shaped outlet, combined with the siphon effect, allows for rapid suction of wastewater during drainage, using the air pressure effect of the liquid level difference, and carrying away fine impurities.

Description

Technical Field

[0001] This utility model relates to the technical field of vegetable washing basin drainers, specifically a siphon-type ultra-thin vegetable washing basin odor-proof drainer. Background Technology

[0002] Kitchen sink drains are crucial components connecting the domestic water supply to the drainage system, and their performance directly affects drainage efficiency, odor prevention, and ease of installation and maintenance. However, existing drain technologies still suffer from several shortcomings that are difficult to balance, as follows:

[0003] In existing technologies, such as the "multi-layer sealed odor-proof drainage device" disclosed in patent CN109056918B, although multi-layer odor prevention is achieved through structures such as fixed odor-proof cores and combined odor-proof plugs, it requires multiple components such as telescopic pipes and fixing nuts to achieve multi-layer sealing. The overall structure is complex and large in size, with a high vertical height, making it difficult to adapt to ultra-thin sinks or small cabinet spaces. At the same time, its drainage path requires multiple turns through inclined pipes and telescopic pipes inside the drain, resulting in high water flow resistance, limited drainage speed, and the interior is prone to forming dead corners for dirt accumulation due to corners and gaps, making cleaning difficult.

[0004] Another patent, CN209227695U, discloses a "novel removable and washable sink odor-proof drain," which solves the problem of removing and washing the odor-proof core. However, its odor-proofing relies on the gravity-resetting structure of the movable cover. After long-term use, the cover is prone to wear and tear, and impurities can become stuck, leading to poor sealing and insufficient odor-proofing reliability. More importantly, its filter component is a traditional aluminum filter basket, which achieves filtration only through simple drilling. The pore diameter is relatively large (usually ≥5mm) and sparsely distributed. Although it can intercept large impurities, small kitchen waste (such as rice grains and vegetable scraps) can easily penetrate into the pipe and cause blockage. If the pore diameter is reduced to improve the filtration effect, the drainage speed will be significantly reduced, creating a contradiction between "filtration and drainage efficiency." Most existing filter baskets are made of aluminum or ordinary plastic. After drilling, the edges of the pores are rough, which easily entangles hair, fibers, and other impurities, further increasing drainage resistance.

[0005] Furthermore, traditional drain systems suffer from a core flaw: the accumulation of waste within the pipes leads to backflow and foul odors. While traditional drain systems incorporate water seals and odor-preventing mechanisms, they fail to achieve a complete odor-preventing seal at the source (the sink drain inlet). Due to their complex installation structure, kitchen waste easily accumulates in the pipes, leading to the growth of bacteria, insects, mold, and foul smells. This not only makes cleaning difficult but also creates a breeding ground for grime, ultimately turning the kitchen into a source of odor. Users are forced to cover the sink frequently and disassemble and wash it, yet the problem of backflow and foul odors persists. Simultaneously, existing odor-preventing structures either rely on mechanical seals, such as spring- or magnet-driven covers, which are prone to corrosion and aging failure; or they rely on deep water seal designs, requiring significant installation space. These water seals only block the flow at the drain end but cannot prevent the backflow of rotten odors from within the pipes.

[0006] In summary, existing technologies have significant limitations in terms of odor prevention reliability, drainage efficiency, space adaptability, and ease of maintenance. There is an urgent need for a drainer that is structurally simple, has high filtration efficiency, stable odor prevention, and is suitable for ultra-thin installation environments. Utility Model Content

[0007] To address the aforementioned problems, specifically those raised in the background section, this utility model proposes a siphon-type ultra-thin vegetable basin deodorizing drain, comprising a drain housing, an open funnel-shaped cup body installed within the inner cavity of the drain housing, a screen-type filter basket mounted on the open funnel-shaped cup body, a water outlet located in the middle of the side wall of the drain housing, a baffle plate located at the water outlet, and an overflow pipe inlet located at the bottom of the side wall of the drain housing; the lower part of the open funnel-shaped cup body narrows inward to form a funnel-shaped water outlet, the bottom of which is lower than the baffle plate, and the funnel-shaped water outlet forms a siphon channel with the inner cavity of the drain housing.

[0008] A further feature of this invention is that an internal thread is provided on the inner side of the water inlet of the drain housing, and one end of the internal thread near the edge of the water inlet extends outward to form a flange.

[0009] A further feature of this invention is that the upper part of the outer wall of the open funnel cup is fastened to the inner cavity of the drainer housing by a sealing ring.

[0010] A further feature of this invention is that the bottom of the funnel-shaped outlet forms a height difference of 2-7cm with the top of the baffle.

[0011] A further feature of this invention is that both the open funnel cup and the sieve-type filter basket are provided with handles, and the mesh side length of the sieve-type filter basket is in the range of 1.5-2.0mm.

[0012] A further feature of this invention is that the height of the baffle is 38-42% of the outlet diameter.

[0013] A further feature of this invention is that the overflow pipe inlet is connected to the overflow pipe via an overflow pipe connector, the other end of the overflow pipe is connected to the overflow hole of the vegetable washing basin, and a sealing ring is provided on the outer wall of the overflow pipe connector.

[0014] A further feature of this invention is that the bottom edge of the inner cavity of the drainer casing is rounded.

[0015] The beneficial technical effects of this utility model are as follows:

[0016] 1. Highly efficient odor prevention and reliable sealing: The funnel-shaped outlet of the open funnel cup body and the siphon channel formed by the inner cavity of the drain casing, combined with the baffle design, retain water to a depth of 2-7cm, forming a stable water seal. This effectively blocks sewer odors and bacteria from spreading back. The odor prevention effect is long-lasting and does not rely on easily worn parts such as springs and magnets, solving the problem of sealing failure in traditional odor prevention structures.

[0017] 2. Completely sealed odor prevention from the source, blocking odor penetration through pipes: Unlike traditional drain systems that only have a water seal at the end for passive odor prevention, this application uses a siphon-type source-sealing structure to directly create a completely sealed odor-proof zone at the sink drain inlet. After the sink drains, the entire pipe from the inlet to the sewer is sealed and isolated. Even if residual residue in the pipe ferments and produces odors, the siphon-sealed zone blocks the reverse evaporation and penetration of odors from the source, completely solving the problem of backflow of odors into the house.

[0018] 3. Smooth inner wall for easy cleaning, eliminating the pain of disassembling and scrubbing pipes: The drainer's outer shell and open funnel cup are made of smooth PC material in one piece, with no dead corners and no dirt accumulation on the inner wall. Daily cleaning only requires lifting the screen-type filter basket and the open funnel cup to quickly rinse the inner cavity of the drainer's outer shell. Compared with the complex pipes of traditional drainers (rough inner walls, many bends, and the need for disassembly and scrubbing), the cleaning efficiency is improved several times. It avoids the problem of dirt accumulation on the pipe wall, the growth of bacteria and insects, and the difficulty in cleaning odors from the root, truly achieving the dual guarantee of preventing odors at the source and easy cleaning without disassembly.

[0019] 4. Fast drainage and less prone to clogging: The funnel-shaped outlet's contraction design, combined with the siphon effect, quickly draws in sewage during drainage by utilizing the air pressure caused by the height difference between the liquid surfaces, carrying away fine impurities along with it. This significantly improves drainage speed compared to traditional drainers. The screen-type filter basket accurately intercepts kitchen waste and impurities, reducing the risk of pipe blockage, and the handle design makes it easy to clean quickly.

[0020] 5. Ultra-thin design, saving space: The overall structure is simplified and the vertical height (vertical distance from the mounting surface to the drain) is significantly reduced, making it suitable for ultra-thin sinks and small cabinet spaces, solving the problem of traditional drainers taking up a lot of space due to redundant components.

[0021] 6. Easy installation and maintenance: The internal thread and the soft silicone gasket on the side plate enable quick sealing and fixation without the need for professional tools, simplifying the maintenance process.

[0022] 7. High durability and adaptability: Made of a combination of materials such as PC (high temperature resistant), ABS, and anti-aging soft silicone gaskets, it has excellent corrosion resistance and anti-aging performance; supports single and double basin drain connections, and is suitable for a variety of kitchen scenarios. Attached Figure Description

[0023] Figure 1 A perspective view of the present invention is shown.

[0024] Figure 2 The front view of this utility model is shown.

[0025] Figure 3 The diagram shows a sectional view taken along the AA direction in the main view of this utility model.

[0026] Figure 4 A schematic diagram of an open funnel cup structure is shown.

[0027] Figure 5 A schematic diagram of a sieve-type filter basket structure is shown.

[0028] Figure 6 A schematic diagram of the overflow pipe connector structure is shown.

[0029] Figure 7 A schematic diagram of the single-basin drain connection of this utility model is shown.

[0030] Figure 8 A schematic diagram of the double-basin drain connection of this utility model is shown.

[0031] Reference numerals: 1. Drain housing, 2. Edge plate, 3. Outlet, 4. Overflow pipe inlet, 5. Open funnel cup, 6. Baffle, 7. Sealing ring, 8. Screen filter basket, 9. Overflow pipe connector. Detailed Implementation

[0032] The following is a reference to the appendix. Figure 1-8 The preferred embodiments of this utility model are described below. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0033] This utility model proposes a siphon-type ultra-thin odor-proof drain for a vegetable basin, including a drain housing 1. An open funnel-shaped cup 5 is installed inside the drain housing 1, and the open funnel-shaped cup 5 is one of the core components for fast drainage and odor prevention. A screen-type filter basket 8 is installed on the open funnel-shaped cup 5. Both the open funnel-shaped cup 5 and the screen-type filter basket 8 are equipped with handles for easy disassembly and cleaning of the inner cavity of the drain housing 1. The mesh size of the screen-type filter basket 8 ranges from 1.5 to 2.0 mm, and it is made of 304 food-grade stainless steel, burr-free, with appropriately sized mesh openings, ensuring smooth drainage while effectively intercepting common kitchen waste such as vegetable leaves and rice grains.

[0034] A water outlet 3 is located in the middle of the side wall of the drain housing 1. The outer wall of the water outlet has external threads for easy connection to the drain pipe. A baffle 6 is installed at the water outlet 3, and the height of the baffle 6 is 38-42% of the diameter of the water outlet 3. During use, the baffle 6 allows some water to remain at the bottom of the inner cavity of the drain housing 1. The end of the funnel-shaped water outlet at the bottom of the open funnel cup 5 will be submerged in the retained water, forming a water seal, thereby preventing sewer odors from rising and achieving an odor-proof function.

[0035] The bottom of the side wall of the drain housing 1 is provided with an overflow pipe inlet 4. The overflow pipe inlet 4 is connected to the overflow pipe through an overflow pipe connector 9. The other end of the overflow pipe is connected to the overflow hole of the sink. A sealing ring 7 is provided on the outer wall of the overflow pipe connector 9. The sealing ring 7 can enhance the tightness of the fit between the overflow pipe connector 9 and the overflow pipe and prevent leakage. The bottom edge of the inner cavity of the drain housing 1 is rounded for easy cleaning.

[0036] The drain housing 1 has an internal thread on the inside of the water inlet. One end of the internal thread near the edge of the inlet extends outward to form a flange 2. A soft silicone gasket is installed between the flange 2 and the water outlet of the sink. By tightening the drain housing 1, the soft silicone gasket fits tightly against the lower surface of the sink's steel plate, achieving a sealed fixation between the drain housing 1 and the sink. The drain housing 1 is made of PC material, which has superior high-temperature resistance compared to the commonly used PP material drains on the market.

[0037] The bottom of the internal thread is provided with a support for installing the open funnel cup body 5. The upper part of the outer wall of the open funnel cup body 5 is engaged with the inner cavity of the drain housing 1 by a sealing ring 7. The sealing ring 7 ensures a stable installation, facilitates disassembly and cleaning, and effectively prevents sewer odors from returning to the room through gaps. The top of the open funnel cup body 5 is provided with an outer edge that matches the support, and the lower part tapers inward to form a funnel-shaped outlet. The bottom of the funnel-shaped outlet is lower than the baffle 6, and the bottom of the funnel-shaped outlet and the top of the baffle 6 form a height difference of 2-7cm. This height difference constitutes the effective depth of the water seal, providing the basic water level conditions for siphon activation. The funnel-shaped outlet and the inner cavity of the drain housing 1 form a siphon channel. When sewage is injected to a certain height, the siphon effect is activated, which can quickly discharge sewage and carry away impurities, improving drainage efficiency and preventing clogging.

[0038] The height of baffle 6 determines the minimum water level inside the drain housing 1; the higher the baffle 6, the more water is stored. The bottom of the funnel-shaped outlet is 2-7 cm lower than the top of baffle 6, meaning that under normal conditions, the end of the funnel-shaped outlet is always submerged in water, thus forming a water seal. When drainage begins, the wastewater must first fill the open funnel cup 5 and pass the siphon critical point of the funnel-shaped outlet, i.e., the constricted neck of the open funnel cup 5. At this point, the water stored inside the drain housing 1 and the newly added wastewater together constitute the initial conditions for the liquid level difference, providing the necessary water pressure foundation for siphon activation. The design of the open funnel cup 5 and baffle 6 ensures the overall sealing effect of the drain while retaining sufficient water to extend the odor-proof effect. Simultaneously, the open funnel cup 5 adopts a wide-mouth design, facilitating rapid wastewater discharge.

[0039] Siphon principle:

[0040] The essence of a siphon is to utilize the force of the liquid level difference to draw liquid from a higher container to a lower container through a curved pipe. In this drain system, its core is the rapid siphon flow process during the drainage phase, which relies on the following structural components:

[0041] When the sink drains, the wastewater first flows into the open funnel cup 5. As the water volume increases, the water level inside the open funnel cup 5 rises, while the inner cavity of the drain housing 1 gradually accumulates water due to the obstruction of the baffle 6. When the water level rises above the constricted neck of the open funnel cup 5, the closed channel formed by the funnel-shaped outlet of the open funnel cup 5 and the inner cavity of the drain housing 1 triggers a siphon effect. At this point, the wastewater no longer flows naturally due to gravity, but is drawn in by the pressure difference and quickly discharged into the drain pipe through the funnel-shaped outlet, while also carrying away small impurities in the water. This is the core reason why the drainage is fast and less prone to clogging.

[0042] Siphoning and odor prevention functions:

[0043] After the siphoning process ends and the water flow stops, some water will remain inside the drain housing 1. The 2-7cm height difference between the bottom of the funnel-shaped outlet and the top of the baffle 6 ensures that the remaining water continues to submerge the end of the funnel-shaped outlet, quickly restoring the water seal. This prevents air from flowing back into the drain pipe after the siphoning process ends and continuously blocks sewer odors, achieving a seamless connection between odor prevention and drainage.

[0044] Explanation of professional terms in the drain assembly industry:

[0045] Ultra-thin: refers to the overall vertical height of the drain assembly, that is, the vertical distance from the installation surface to the drain outlet. It is mainly used to reflect the compactness of the drain assembly in terms of installation space, rather than the wall thickness of the drain assembly itself.

[0046] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0047] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0050] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A siphon type ultra-thin vegetable pot deodorizing sewer, comprising a sewer outer shell (1), characterized in that: An open funnel cup (5) is installed in the inner cavity of the drainer housing (1). A screen filter basket (8) is installed on the open funnel cup (5). A water outlet (3) is provided in the middle of the side wall of the drainer housing (1). A baffle (6) is provided at the water outlet (3). An overflow pipe inlet (4) is provided at the bottom of the side wall of the drainer housing (1). The open funnel cup (5) is inwardly contracted at the bottom to form a funnel-shaped water outlet. The bottom of the funnel-shaped water outlet is lower than the baffle (6). The funnel-shaped water outlet and the inner cavity of the drainer housing (1) form a siphon channel.

2. The siphon-type ultra-thin vegetable basin odor-proof drain device according to claim 1, characterized in that: The inner side of the inlet of the drain housing (1) is provided with an internal thread, and the end of the internal thread near the edge of the inlet extends outward to form a flange (2).

3. The siphon-type ultra-thin vegetable basin odor-proof drain device according to claim 1, characterized in that: The upper part of the outer wall of the open funnel cup (5) is fastened to the inner cavity of the drainer outer shell (1) by a sealing ring (7).

4. The siphon-type ultra-thin vegetable basin odor-proof drain device according to claim 1, characterized in that: The bottom of the funnel-shaped outlet forms a height difference of 2-7cm with the top of the baffle (6).

5. The siphon-type ultra-thin vegetable basin odor-proof drain device according to claim 1, characterized in that: Both the open funnel cup (5) and the sieve filter basket (8) are equipped with handles, and the mesh side length of the sieve filter basket (8) is in the range of 1.5-2.0mm.

6. The siphon-type ultra-thin vegetable basin odor-proof drain device according to claim 1, characterized in that: The height of the baffle (6) is 38-42% of the diameter of the outlet (3).

7. The siphon-type ultra-thin vegetable basin odor-proof drain device according to claim 1, characterized in that: The overflow pipe inlet (4) is connected to the overflow pipe through the overflow pipe connector (9), and the other end of the overflow pipe is connected to the overflow hole of the vegetable washing basin. The outer wall of the overflow pipe connector (9) is provided with a sealing ring (7).

8. The siphon-type ultra-thin vegetable basin odor-proof drain device according to claim 1, characterized in that: The bottom edge of the inner cavity of the drainer housing (1) is rounded.

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