Quickly detachable cleaning anti-backflow floor drain

Abstract

The application relates to a quick-detachable and cleanable anti-backflow floor drain, which comprises a shell for being installed on the ground, a base is installed at the bottom of the shell, the shell and the base are detachably fixed, a drain pipe is arranged in the base and is communicated with a sewer pipe, a siphon pipe is arranged in the base, the siphon pipe is reversely arranged on the upside of the drain pipe, a positioning structure is arranged between the siphon pipe and the drain pipe, the positioning structure keeps a certain interval between the inner side top wall of the siphon pipe and the upper end of the drain pipe, and locking structure for controlling whether the drain pipe is communicated with the base is arranged between the siphon pipe and the drain pipe. The application provides the floor drain which can quickly respond and can long-term block the sewer passage.

Description

Technical Field

[0001] This application relates to the technical field of floor drains, and in particular to a quick-disassembly, cleanable, backflow-proof floor drain. Background Technology

[0002] Floor drains, as crucial components in buildings for drainage, odor control, and insect prevention, directly impact the hygiene and safety of the living environment through their sealing performance and ease of use. Currently, most common floor drain structures rely on water seals or mechanical seals. While these provide some protection against backflow of odors and pests under normal use, traditional floor drains still have significant shortcomings in certain situations. When users are away from home for extended periods, the water in the seal may completely evaporate, causing the seal to fail. Furthermore, when sewer pipes become clogged or backflow occurs, existing floor drains generally lack a rapid response mechanism, failing to effectively prevent sewage backflow or harmful gases from flowing back into the room, thus causing indoor environmental pollution.

[0003] Therefore, in special environments or emergencies, there is a lack of floor drains that can respond quickly and effectively block the drainage path for a long time. Utility Model Content

[0004] In order to provide a floor drain that can respond quickly and block the drainage path for a long time, this application provides a floor drain that can be quickly disassembled and cleaned to prevent backflow.

[0005] This application provides a quick-disassembly, cleaning, backflow-proof floor drain with the following technical solution: A quick-disassembly, cleanable, backflow-proof floor drain includes a housing for installation on the ground, a base mounted on the bottom of the housing, and the housing and base being detachably fixed. A drain pipe connected to a sewer pipe is installed inside the base, and a siphon pipe is installed inside the base, with the siphon pipe positioned in reverse over the drain pipe. A positioning structure is provided between the siphon pipe and the drain pipe, maintaining a certain distance between the inner top wall of the siphon pipe and the upper end of the drain pipe. A locking structure is also provided between the siphon pipe and the drain pipe to control whether the drain pipe is connected to the base.

[0006] By adopting the above technical solution, the design of the siphon tube being placed on the upper side of the drain pipe, combined with the positioning structure, creates a stable gap between the inner top wall of the siphon tube and the upper end of the drain pipe. This establishes an effective liquid seal space to prevent odors and gas backflow. Simultaneously, the siphon structure allows a large flow of water to be discharged through the drain pipe. The locking structure allows users to quickly close the drain, effectively preventing emergencies such as water seal evaporation, backflow, and odor recurrence.

[0007] Preferably, the positioning structure includes a retaining strip and an arc-shaped surface. The arc-shaped surface is formed on the inner wall of the top of the drain pipe and protrudes inward. The retaining strip is fixed to the inner side of the siphon pipe. A triangular protrusion is formed at the lower end of the retaining strip. The triangular protrusion is located on one side of the radial direction of the siphon pipe and is correspondingly arranged with the arc-shaped surface. Multiple retaining strips are arranged in a circumferential array around the axis of the siphon pipe.

[0008] By adopting the above technical solution, the arc-shaped inward protrusion, which cooperates with the triangular protrusion formed at the lower end of the retaining strip, forms a limiting point in the axial direction of the siphon tube, thereby ensuring the spacing between the inner top wall of the siphon tube and the upper end of the drain pipe. Multiple retaining strips arranged in a circumferential array along the siphon tube axis ensure the accuracy and stability of the siphon tube installation position, preventing siphon tube swaying or displacement while maintaining the set spacing. This ensures the continuous effectiveness of the liquid seal structure and simplifies the alignment operation during installation.

[0009] Preferably, the locking structure includes a boss located at the bottom of the base. When the base is not connected to the drain pipe, the lower end of the siphon pipe is sleeved on the outside of the boss. A first sealing ring is provided between the siphon pipe and the boss. A locking structure is also provided between the siphon pipe and the drain pipe.

[0010] By adopting the above technical solution, the drainage path is interrupted when the lower end of the siphon tube is fitted onto the outside of the boss, thus preventing the drain pipe from connecting with the base. The first sealing ring ensures a tight seal between the siphon tube and the boss, blocking the upward flow of odors and harmful gases. Simultaneously, a locking structure between the siphon tube and the drain pipe ensures a reliable connection between the components in the closed state, preventing loosening of the sealing structure due to external disturbances or gravity, and improving the safety and durability of the closed state.

[0011] Preferably, the locking structure includes a locking block formed on the inner wall of the siphon pipe and a locking groove formed on the outer wall of the drain pipe. When locking the siphon pipe and the drain pipe, the locking block slides down along the locking groove and then rotates around the axis of the drain pipe.

[0012] By adopting the above technical solution, the locking block set on the inner wall of the siphon pipe and the groove formed on the outer wall of the drain pipe are engaged. After the user slides the locking block down along the groove and then rotates it around the axis of the drain pipe, the siphon pipe and the drain pipe are locked together, forming a stable mechanical connection. This structure ensures that the floor drain is closed while being easy to operate and compact in structure. It also improves the vibration resistance and long-term sealing effect of the entire device and is suitable for various application scenarios such as high-frequency opening and closing or long-term sealing.

[0013] Preferably, the base is provided with a quick-release sleeve, the quick-release sleeve and the base are detachably fixed, and the drain pipe is formed on the quick-release sleeve.

[0014] By adopting the above technical solution, the quick-release sleeve can be quickly removed or replaced when needed, thereby simplifying the maintenance process of the floor drain and avoiding the need to replace the entire floor drain due to the accumulation of dirt, which helps to shorten the repair time.

[0015] Preferably, there is a gap between the quick-release sleeve and the base, and a second sealing ring is provided in the gap between the quick-release sleeve and the base.

[0016] By adopting the above technical solution, the sealing performance between the quick-release structures can be maintained continuously during the operation of the floor drain through the elastic compression of the sealing ring. Even under high-frequency disassembly or long-term use, it can effectively prevent water vapor leakage. At the same time, the existing gap helps to reduce the possibility of the water seal inside the quick-release sleeve freezing and expanding in cold environments, thereby damaging the overall floor drain.

[0017] Preferably, a locking groove is formed on the inner sidewall of the base, and a locking block is formed on the outer sidewall of the quick-release sleeve. When locking the quick-release sleeve and the base, the locking block slides down along the locking groove and then rotates around the axis of the quick-release sleeve.

[0018] By adopting the above technical solution, when in use, the locking block slides down along the locking groove and rotates around the axis of the quick-release sleeve, which can achieve reliable locking between the sleeve and the base. This structure makes the quick-release component easy to install and remove and has a high-strength connection effect after installation. It is not easy to loosen when the floor drain is subjected to external force or water flow impact, effectively improving the service life of the floor drain and the overall structural stability.

[0019] Preferably, a semi-circular surface is formed on the inner wall of the drain pipe, and the semi-circular surface protrudes inward. When the inner cavity of the outer shell and the drain pipe are connected, the triangular protrusion on the clip is located on the upper side of the semi-circular surface; when the inner cavity of the outer shell and the drain pipe are not connected, the triangular protrusion on the clip is located on the lower side of the semi-circular surface.

[0020] By adopting the above technical solution, the relative positions of the triangular protrusion and the semicircular surface on the locking strip can form an auxiliary limiting relationship. When the inner cavity of the outer shell is connected to the drain pipe, the semicircular surface can provide some support for the locking strip; when the inner cavity of the outer shell is not connected to the drain pipe, the triangular protrusion on the locking strip is located on the lower side of the semicircular surface, thereby achieving a certain degree of locking effect, preventing the siphon pipe from shifting due to its own weight or vibration, and enabling the floor drain to have better durability and airtightness under closed conditions.

[0021] Preferably, the outer shell includes a base plate with an installation opening on the base plate. The base has an installation opening extending from top to bottom. The base includes a top plate that is pressed onto the base plate. The outer side of the base has a threaded section. A locking ring is fitted on the outer side of the base. The locking ring is threadedly connected to the threaded section. The upper side of the locking ring abuts against the lower side of the base plate.

[0022] By adopting the above technical solution, the structure achieves a stable mechanical connection between the outer shell, the base and the ground, making the floor drain less prone to displacement in the vertical direction, while improving installation efficiency and the repeatability of the maintenance process.

[0023] Preferably, a grid plate is formed on the outer wall of the siphon tube, the grid plate is vertically arranged, and multiple grid plates are arranged in a circumferential array around the axis of the siphon tube.

[0024] By adopting the above technical solution, the structure enables the siphon pipe to effectively intercept larger particles of debris during the drainage process, preventing foreign objects from entering the drain pipe and causing blockage, thereby improving the drainage efficiency and anti-clogging performance of the floor drain.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By designing a detachable structure for the outer shell and base, and incorporating components such as quick-release sleeves, locking blocks, and locking grooves, the floor drain allows for easy disassembly, cleaning, or replacement of the drainage section without dismantling the entire assembly. Simultaneously, the inclusion of a first and second sealing ring ensures stable sealing performance even during frequent assembly and disassembly, preventing leakage of odors, gas, or liquids. 2. The floor drain features an internal locking mechanism to control the connection between the drain pipe and the base, along with rotatable blocks, slots, and protrusions. This allows users to quickly shut off the drainage path in case of backflow or air leakage. This shut-off mechanism, combined with a reliable locking structure and sealing components, maintains a long-term seal, preventing water evaporation, sewage backflow, and harmful gas intrusion into the room. It is particularly suitable for scenarios where users are away for extended periods or where the bathroom is unused for long periods. 3. By incorporating gaps and a second sealing ring in the quick-release structure, combined with the arrangement of the quick-release sleeve structure and the siphon path, the water seal layer is protected, effectively reducing the risk of icing. Even under low-temperature conditions, the gaps between the structures can buffer the stress caused by ice expansion, preventing component breakage or jamming, ensuring that the floor drain can maintain normal operation in cold regions, and exhibiting good environmental adaptability. Attached Figure Description

[0026] Figure 1 This is an isometric view of the overall structure of the quick-disassembly and cleaning anti-backflow floor drain, which is the main feature of this application embodiment. Figure 2 This is a cross-sectional view of the internal structure of the quick-disassembly and cleaning anti-backflow floor drain in its working state, as shown in the embodiments of this application. Figure 3 This is a cross-sectional view of the internal structure of the quick-disassembly and cleaning anti-backflow floor drain in its closed state, as shown in the embodiments of this application. Figure 4 This is an exploded view of the main components of the quick-disassembly, cleaning, and backflow-proof floor drain in the embodiments of this application. Figure 5 This is an exploded isometric view of the main components of the base and quick-release sleeve structure in the embodiments of this application; Figure 6 This is an isometric view of the internal structure of the siphon tube, which is the main feature of the embodiments in this application.

[0027] Reference numerals: 1. Outer shell; 11. Base plate; 12. Drain panel; 2. Base; 21. Top plate; 22. Locking groove; 221. Micro protrusion; 23. Second sealing ring; 24. Connecting pipe; 25. Sleeve; 26. Sealing gasket; 27. Locking ring; 3. Quick release sleeve; 31. Positioning plate; 32. Locking block; 33. Boss; 34. First sealing ring; 4. Drain pipe; 41. Arc-shaped surface; 42. Semi-circular surface; 43. Slot; 5. Siphon pipe; 51. Locking strip; 511. Triangular protrusion; 52. Support plate; 521. Locking block; 53. Grating plate. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0029] This application discloses a quick-disassembly and cleaning anti-backflow floor drain.

[0030] See Figures 1-4 The quick-disassembly and cleaning anti-backflow floor drain includes an outer shell 1. The outer shell 1 can be adapted to various installation situations; in this embodiment, it is square, but in actual installation, it can also be round, rectangular, or other shapes. The upper side of the outer shell 1 is open, and a floor drain panel 12 is embedded in the upper side of the outer shell 1. A base plate 11 is formed on the lower side of the outer shell 1, and an installation opening is provided on the base plate 11. A base 2 is also provided inside the outer shell 1, and the base 2 extends vertically from top to bottom through the installation opening. A top plate 21 is formed on the upper side of the base 2, and the top plate 21 is pressed against the upper side of the base plate 11. A sealing gasket 26 is provided between the top plate 21 and the base plate 11. A threaded section is also formed on the outer side of the base 2, and a locking ring 27 is fitted on the outer side of the base 2. The locking ring 27 is threadedly connected to the threaded section, and the upper side of the locking ring 27 abuts against the lower side of the base plate 11. A connecting pipe 24 is formed at the bottom of the base 2, and a sleeve 25 is coaxially fitted on the outer side of the connecting pipe 24. The diameter of the connecting pipe 24 is equal to or less than 50mm, and the diameter of the sleeve 25 is equal to or less than 75mm. In actual installation, the construction personnel can directly place the connecting pipe 24 or the sleeve 25 onto the drain pipe to connect the inner side of the base 2 with the drain pipe.

[0031] See Figures 2-5The base 2 contains a quick-release sleeve 3, with a positioning plate 31 formed on its upper end. An annular positioning groove is formed on the top plate 21, and the lower side of the positioning plate 31 abuts against the upper side of the positioning groove. A locking groove 22, L-shaped, is also formed on the inner wall of the base 2. A locking block 32 is formed on the outer wall of the quick-release sleeve 3. When locking the quick-release sleeve 3 and the base 2, the locking block 32 slides down along the locking groove 22 and then rotates around the axis of the quick-release sleeve 3, thus completing the locking of the quick-release sleeve 3 and the base 2. A micro-protrusion 221 is formed on the lower horizontal side of the locking groove 22, located in the middle of the horizontal direction. The locking block 32 requires a certain pushing or pulling force to pass over the micro-protrusion 221, further ensuring the locking effect. The locking blocks 32 and locking grooves 22 are arranged in multiple sets around the axis of the quick-release sleeve 3. In this embodiment, four sets are provided.

[0032] There is a gap between the quick-release sleeve 3 and the base 2, and a second sealing ring 23 is provided in the gap between the quick-release sleeve 3 and the base 2. A drain pipe 4 is also formed on the quick-release sleeve 3, and the drain pipe 4 is coaxially arranged with the connecting pipe 24. The lower end of the drain pipe 4 protrudes from the quick-release sleeve 3, and a corresponding groove is formed in the base 2, in which the lower end of the drain pipe 4 is embedded. The second sealing ring 23 is sleeved on the outer side of the lower end of the drain pipe 4.

[0033] See Figures 2-6 A siphon pipe 5 is installed on the upper side of the drain pipe 4, and the siphon pipe 5 is installed in reverse on the upper side of the drain pipe 4, with the upper end of the siphon pipe 5 being closed. A positioning structure, a locking structure, and a locking mechanism are provided between the siphon pipe 5 and the drain pipe 4.

[0034] The positioning structure includes a retaining strip 51 and an arc-shaped surface 41. The arc-shaped surface 41 is formed on the inner sidewall of the top of the drain pipe 4 and protrudes inward. The upper end of the retaining strip 51 is integrally formed with the top wall of the siphon pipe 5, and the lower end of the retaining strip 51 has a triangular protrusion 511. The triangular protrusion 511 is located on one side of the radial direction of the siphon pipe 5 and is correspondingly arranged with the arc-shaped surface 41. A semi-circular surface 42 is also formed on the lower side of the arc-shaped surface 41. There is a certain gap between the semi-circular surface 42 and the arc-shaped surface 41, and the semi-circular surface 42 protrudes inward. When the inner cavity of the outer shell 1 is connected to the drain pipe, the triangular protrusion 511 on the retaining strip 51 is located on the upper side of the semi-circular surface 42; when the inner cavity of the outer shell 1 is not connected to the drain pipe, the triangular protrusion 511 on the retaining strip 51 is located on the lower side of the semi-circular surface 42. Multiple retaining strips 51 are arranged in a circumferential array around the axis of the siphon pipe 5. In this embodiment, four are used.

[0035] The locking structure includes a boss 33, which is formed at the bottom of the quick-release sleeve 3. When the base 2 is not connected to the drain pipe 4, the lower end of the siphon pipe 5 is sleeved on the outside of the boss 33, and a first sealing ring 34 is provided between the siphon pipe 5 and the boss 33.

[0036] The locking structure includes a support plate 52 formed on the inner wall of the siphon pipe 5, the length of which is parallel to the axis of the siphon pipe 5. A locking block 521 is formed on the support plate 52, and a locking groove 43, L-shaped, is formed on the outer wall of the drain pipe 4. When locking the siphon pipe 5 and the drain pipe 4, the locking block 521 slides down along the locking groove 43 and then rotates around the axis of the drain pipe 4, thus locking the siphon pipe 5 and the drain pipe 4 relative to each other.

[0037] A grid plate 53 is formed on the outer wall of the siphon pipe 5. The grid plate 53 is vertically arranged, and multiple grid plates 53 are arranged in a circumferential array around the axis of the siphon pipe 5. When the inner cavity of the outer shell 1 is connected to the drain pipe, the upper side of the grid plate 53 and the upper side of the positioning plate 31 are on the same horizontal plane.

[0038] The implementation principle of this application's embodiment of a quick-disassembly and cleaning anti-backflow floor drain is as follows: During normal use, the triangular protrusion 511 on the locking strip 51 is located on the upper side of the semi-circular surface 42, and there is a certain gap between the top wall of the siphon pipe 5 and the upper side of the drain pipe 4, thereby achieving a high-flow siphon drainage effect. When it is necessary to seal the floor drain, the user presses down on the siphon pipe 5, causing the locking block 521 to slide down along the slot 43, and the siphon pipe 5 is fitted onto the protrusion 33, so that the inner cavity of the outer shell 1 and the drain pipe are not connected. The user then rotates the siphon pipe 5, causing the locking block 521 to move into the horizontal end of the slot 43, thereby locking the siphon pipe 5 and the drain pipe 4 relative to each other. In this way, the floor drain is kept in a long-term sealed state, preventing the water seal in the siphon pipe 5 from evaporating, sewage from flowing back, and harmful gases from entering the room. This is especially suitable for scenarios where users are away for a long time or the bathroom is unused for a long time.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-disassembly, cleanable, backflow-proof floor drain, characterized in that: Includes a housing (1) for installation on the ground, a base (2) installed at the bottom of the housing (1), the housing (1) and the base (2) are detachably fixed, a drain pipe (4) connected to a drain pipe is provided inside the base (2), a siphon pipe (5) is provided inside the base (2), the siphon pipe (5) is reversed and covered on the upper side of the drain pipe (4), a positioning structure is provided between the siphon pipe (5) and the drain pipe (4), the positioning structure keeps a certain distance between the inner top wall of the siphon pipe (5) and the upper end of the drain pipe (4), and a locking structure is also provided between the siphon pipe (5) and the drain pipe (4) to control whether the drain pipe (4) is connected to the base (2).

2. The quick-disassembly and cleaning anti-backflow floor drain according to claim 1, characterized in that: The positioning structure includes a retaining strip (51) and an arc-shaped surface (41). The arc-shaped surface (41) is formed on the inner side wall of the top of the drain pipe (4). The arc-shaped surface (41) protrudes inward. The retaining strip (51) is fixed inside the siphon pipe (5). A triangular protrusion (511) is formed at the lower end of the retaining strip (51). The triangular protrusion (511) is located on one side of the radial direction of the siphon pipe (5) and is correspondingly set with the arc-shaped surface (41). Multiple retaining strips (51) are arranged in a circular array around the axis of the siphon pipe (5).

3. The quick-disassembly and cleaning anti-backflow floor drain according to claim 1, characterized in that: The locking structure includes a boss (33), which is located at the bottom of the base (2). When the base (2) is not connected to the drain pipe (4), the lower end of the siphon pipe (5) is sleeved on the outside of the boss (33). A first sealing ring (34) is provided between the siphon pipe (5) and the boss (33). A locking structure is also provided between the siphon pipe (5) and the drain pipe (4).

4. A quick-disassembly, cleanable, backflow-proof floor drain according to claim 3, characterized in that: The locking structure includes a locking block (521) formed on the inner wall of the siphon (5) and a locking groove (43) formed on the outer wall of the drain pipe (4). When locking the siphon (5) and the drain pipe (4), the locking block (521) slides down along the locking groove (43) and then rotates around the axis of the drain pipe (4).

5. A quick-disassembly, cleanable, backflow-proof floor drain according to claim 1, characterized in that: The base (2) is provided with a quick-release sleeve (3), the quick-release sleeve (3) and the base (2) are detachably fixed, and the drain pipe (4) is formed on the quick-release sleeve (3).

6. A quick-disassembly, cleanable, backflow-proof floor drain according to claim 5, characterized in that: There is a gap between the quick-release sleeve (3) and the base (2), and a second sealing ring (23) is provided in the gap between the quick-release sleeve (3) and the base (2).

7. A quick-disassembly, cleanable, backflow-proof floor drain according to claim 5, characterized in that: A locking groove (22) is formed on the inner side wall of the base (2), and a locking block (32) is formed on the outer side wall of the quick-release sleeve (3). When the quick-release sleeve (3) and the base (2) are locked, the locking block (32) slides down along the locking groove (22) and then rotates around the axis of the quick-release sleeve (3).

8. A quick-disassembly, cleanable, backflow-proof floor drain according to claim 2, characterized in that: The inner wall of the drain pipe (4) is also formed with a semi-circular surface (42). The semi-circular surface (42) protrudes inward. When the inner cavity of the outer shell (1) is connected to the drain pipe, the triangular protrusion (511) on the clip (51) is located on the upper side of the semi-circular surface (42); when the inner cavity of the outer shell (1) is not connected to the drain pipe, the triangular protrusion (511) on the clip (51) is located on the lower side of the semi-circular surface (42).

9. A quick-disassembly, cleanable, backflow-proof floor drain according to claim 1, characterized in that: The outer shell (1) includes a base plate (11) with an installation opening. The base (2) has an installation opening extending from top to bottom. The base (2) includes a top plate (21) which is pressed onto the base plate (11). The outer side of the base (2) is formed with a threaded section. A locking ring (27) is fitted on the outer side of the base (2). The locking ring (27) is threadedly connected to the threaded section. The upper side of the locking ring (27) abuts against the lower side of the base plate (11).

10. A quick-disassembly, cleanable, backflow-proof floor drain according to claim 1, characterized in that: A grid plate (53) is formed on the outer wall of the siphon tube (5). The grid plate (53) is vertically arranged, and multiple grid plates (53) are arranged in a circular array around the axis of the siphon tube (5).

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