A floor drain core assembly and odor-resistant floor drain

Abstract

The utility model discloses a floor drain core subassembly and deodorization floor drain. Floor drain core subassembly includes core main body, back shell, flap and counterweight, and core main body is equipped with water passage, and back shell with core main body can dismantle and be connected and with core main body surround and form sliding cavity, and flap is rotatably connected with back shell and one end stretches into sliding cavity, and counterweight sets up in sliding cavity and sets up as along the first direction sliding, and counterweight presses on one end of flap, to utilize self gravity to make flap keep closing the water outlet of water passage. The utility model relates to floor drain technical field provides a floor drain core subassembly and deodorization floor drain, can cooperate floor drain size and carry out the replacement of counterweight, and use is more flexible, and different scene is coped with.

Description

Technical Field

[0001] This utility model relates to the field of floor drain technology, and more specifically, to a floor drain core component and an odor-proof floor drain. Background Technology

[0002] Odor-proof floor drains are key devices for solving the problem of odors and backflow in bathrooms, kitchens, and other areas. Their core function is to block the intrusion of sewer odors, insects, and germs through a sealed structure or water seal design. There are many types of odor-proof floor drains, such as water seal drains, mechanical drains, silicone drain cores, and deep water seal drains. Currently, mechanical drains are more commonly used in bathrooms and kitchens. Mechanical drains use gravity or magnetism to control the sealing cover, automatically opening during drainage and closing to prevent odors. The drain core assembly is the core component of the floor drain, primarily responsible for odor prevention, insect prevention, and blockage prevention. Its design directly affects the drain's performance and lifespan. Utility Model Content

[0003] This utility model embodiment provides a drain core assembly, including: The core body is equipped with a water passage; The rear shell is detachably connected to the core body and forms a sliding cavity with the core body; A flip cover, rotatably connected to the rear shell, with one end extending into the sliding cavity; A counterweight is disposed within the sliding cavity and configured to slide along a first direction. The counterweight is pressed against one end of the flip cover, so that the counterweight uses its own weight to keep the flip cover closed at the outlet of the water passage.

[0004] In some exemplary embodiments, the rear shell is provided with a first cavity extending along the first direction, and the cavity of the first cavity is provided with at least one opening for filling the counterweight into the first cavity; The rear shell abuts against the outer wall of the core body, and the outer wall of the core body covers the at least one opening to form the sliding cavity.

[0005] In some exemplary embodiments, the outer wall of the core body includes a first end face located at one end of the core body in a second direction, the second direction being perpendicular to the first direction; The rear shell is located on one side of the core body in the second direction and abuts against the first end face, and the rear shell and the core body are snap-fitted together.

[0006] In some exemplary embodiments, the core body is provided with at least one tongue, the tongue extends along the first direction, one end of the tongue is connected to the outer wall of the core body in the first direction, and the other end is provided with a buckle; The rear shell has at least one slot at one end in the first direction, the depth direction of the slot is consistent with the first direction, and the slot wall has a fastener. The tongue and the slot are inserted into each other in a corresponding manner, and the buckle and the latch are engaged in a corresponding manner to form a buckle connection.

[0007] In some exemplary embodiments, the outer wall of the core body further includes a second end face, which is located on the side of the first end face in the first direction and connected to the first end face, wherein the first end face and the second end face constitute a stepped surface; One end of the rear shell abuts against the second end face in the first direction, and one end of the tongue is connected to the second end face and spaced apart from the first end face.

[0008] In some exemplary embodiments, two tongues are provided, and the two tongues are arranged at a distance from each other in a third direction, the third direction being perpendicular to the first direction and the second direction; The first cavity is provided with two slots, which are respectively located on both sides of the first cavity in the third direction; Each of the said tongues is plate-shaped, the latch is located on the side of the tongue near the first end face in the second direction, and the buckle is located on the groove wall of the slot near the core body in the second direction.

[0009] In some exemplary embodiments, the opening is provided in two parts, including a first opening and a second opening. The first opening is located at one end of the first cavity in a second direction, and the second opening is located at one end of the first cavity in the first direction. The first end face is configured to cover the first opening, and the second end face is configured to cover the second opening.

[0010] In some exemplary embodiments, the wall of the sliding cavity is provided with at least one protruding rib extending along the first direction, and the counterweight and the protruding rib abut against each other.

[0011] In some exemplary embodiments, the ribs are provided in multiple forms, including a first rib located on the cavity wall of the first cavity and / or a second rib located on the outer wall of the core body.

[0012] In some exemplary embodiments, the cavity wall of the first cavity is provided with a notch, one end of the flip cover extends into the first cavity through the notch, and the flip cover pivot is connected to the cavity wall of the first cavity.

[0013] This utility model embodiment also provides an odor-proof floor drain, including a floor drain body and the aforementioned floor drain core assembly, wherein the floor drain core assembly is detachably connected to the floor drain body.

[0014] The drain core assembly of this utility model has a detachable connection between the rear shell and the core body, and the counterweight can be replaced according to the size of the drain, making it more flexible to use and adaptable to different scenarios.

[0015] The drain core assembly of this utility model embodiment can replace the counterweight with different weights. The drain core assembly with different counterweights can adapt to different water pressures, so that the same drain core assembly can be adapted to different water pressure scenarios.

[0016] In this embodiment of the utility model, the connection between the rear shell and the core body of the drain core assembly is a snap-fit ​​connection, which facilitates disassembly and assembly.

[0017] The drain core assembly of this utility model has a closed sliding cavity that can protect the counterweight and the hinge of the flip cover, thereby improving the service life of the drain core assembly.

[0018] The drain core assembly of this utility model embodiment has a plate-shaped tongue that can withstand a certain degree of bending. When it is inserted into the back cover, it will undergo slight deformation, thereby allowing the buckle to be smoothly engaged in the buckle position of the back cover.

[0019] The drain core assembly of this utility model has raised ribs on the cavity wall of the sliding cavity, which can reduce the friction between the counterweight and the cavity wall of the sliding cavity, and at the same time play a supporting role for the counterweight. When the counterweight slides, it can prevent the counterweight from shifting at a large angle, keep the center of gravity of the counterweight stable, and reduce the risk of reduced gravitational torque and increased friction due to tipping.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0022] Figure 1 This is a schematic diagram of a drain core assembly as an exemplary embodiment of the present invention; Figure 2 for Figure 1 Sectional view along line AA in the middle; Figure 3 for Figure 1 A schematic diagram showing the disassembled drain core component; Figure 4 for Figure 1 BB-direction sectional view in the middle; Figure 5 for Figure 4 A schematic diagram of the core body; Figure 6 for Figure 2 Enlarged view of a portion of point C in the middle; Figure 7 for Figure 3 A schematic diagram of the rear shell; Figure 8 for Figure 4 A magnified view of part D in the diagram; Figure 9 for Figure 3 A schematic diagram of the flip cover; Figure 10 This is another schematic diagram of the rear shell of this exemplary embodiment; Figure 11 This is a schematic diagram of the closed state of a drain core assembly according to an exemplary embodiment of the present invention; Figure 12 This is a first schematic diagram of an odor-proof floor drain according to an exemplary embodiment of the present invention; Figure 13 This is a second schematic diagram of an odor-proof floor drain according to an exemplary embodiment of the present invention; Figure 14 for Figure 12 A breakdown diagram of the odor-proof floor drain. Detailed Implementation

[0023] This application describes several embodiments, but these descriptions are exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0024] Figure 1 This is a schematic diagram of a drain core assembly according to an exemplary embodiment of the present invention. Figure 2 for Figure 1 Sectional view along line AA in the middle, Figure 3 for Figure 1 A disassembled diagram of the drain core component, in which... Figure 1The drain core assembly is in the open state. This embodiment provides a drain core assembly, such as... Figures 1 to 3 As shown, the drain core assembly may include a core body 1, a rear shell 2, a flip cover 3, and a counterweight 4. The core body 1, rear shell 2, flip cover 3, and counterweight 4 are detachable. The core body 1 may have a water passage 6. The rear shell 2 and core body 1 are detachably connected and together form a sliding cavity 9. The flip cover 3 is rotatably connected to the rear shell 2, with one end extending into the sliding cavity 9. The counterweight 4 is disposed within the sliding cavity 9 and is configured to slide along a first direction. The counterweight 4 presses against one end of the flip cover 3, and the counterweight 4 presses down on the flip cover 3 by its own weight, keeping the flip cover 3 closed at the outlet 7 of the water passage 6. In this embodiment of the drain core assembly, the counterweight 4 can be replaced to match the size of the drain, making it more flexible and adaptable to different scenarios. Furthermore, the same drain core assembly can be fitted with counterweights 4 of different weights, allowing it to adapt to different water pressures, thus enabling the same drain core assembly to be suitable for different water pressure scenarios.

[0025] In some exemplary embodiments, such as Figures 1 to 3 As shown, the water passage 6 can penetrate the core body 1 in a first direction. One end of the water passage 6 in the first direction can be an inlet 8, and the other end can be an outlet 7. In this example, the first direction can be a vertical direction, i.e., the up and down direction. The inner wall of the core body 1 can be the hole wall of the water passage 6, and the outer wall of the core body 1 can be the outer surface of the core body 1 that is away from the water passage 6 in the first direction. The rear shell 2 is disposed on the outer wall of the core body 1, and the flip cover 3 can be disposed at the outlet 7 of the water passage 6.

[0026] Figure 4 for Figure 1 BB-direction sectional view in the middle, Figure 5 for Figure 4 A schematic diagram of the core body. Figure 6 for Figure 2 A partially enlarged schematic diagram at point C, as shown in some exemplary embodiments, such as Figures 3 to 6 As shown, the outer wall of the core body 1 may include a first end face 10 and a second end face 11 located at one end of the core body 1 in a second direction. The first end face 10 may extend along the first direction, and one end of the first end face 10 may extend to the outlet 7. The second end face 11 is located at the end of the first end face 10 away from the outlet 7 in the first direction and is connected to the first end face 10. The first end face 10 and the second end face 11 form a stepped surface, and the second end face 11 is perpendicular to the first direction. The stepped surface on the outer wall of the core body 1 can provide space for the installation of the rear shell 2, and the first end face 10 and the second end face 11 of the stepped surface also provide positioning for the installation of the rear shell 2. In this example, the second direction and the third direction are two directions on the horizontal plane, both of which are perpendicular to the first direction, and the second direction and the third direction are perpendicular to each other.

[0027] In some exemplary embodiments, such as Figures 3 to 6 As shown, the core body 1 is provided with at least one tongue 12, which extends along a first direction. One end of the tongue 12 in the first direction is connected to the outer wall of the core body 1, and the other end is provided with a buckle 13. There are two tongues 12, spaced apart in a third direction, but this is not limited to this; for example, there may be one tongue 12, or three or more tongues 12, spaced apart in a third direction. Any tongue 12 is plate-shaped, with one end connected to a second end face 11 and the other end provided with a buckle 13. The tongue 12 may be spaced apart from the first end face 10. The plate-shaped tongue 12 allows it to withstand a certain degree of bending. When connected to the rear shell 2, the tongue 12 can undergo slight deformation, allowing the buckle 13 to smoothly engage with the buckle in the rear shell 2. The latch 13 may be located on the side of the tongue 12 closer to the first end face 10 in the second direction, but is not limited thereto. For example, the latch 13 may be located on the side of the tongue 12 away from the first end face 10 in the second direction.

[0028] Figure 7 for Figure 3 A schematic diagram of the rear shell in the middle. Figure 8 for Figure 4 A partially enlarged schematic diagram at point D in the diagram, as shown in some exemplary embodiments, such as Figures 6 to 8 As shown, the rear shell 2 has a first cavity 14 extending along a first direction. The cavity 14 has at least one opening 15 for filling a counterweight 4 into the first cavity 14, that is, the counterweight 4 can be inserted into the first cavity 14 through the opening 15. There are two openings 15, including a first opening 16 and a second opening 17. The first opening 16 is located at one end of the first cavity 14 in the second direction to open one end of the first cavity 14 in the second direction. The second opening 17 is located at one end of the first cavity 14 in the first direction to open one end of the first cavity 14 in the first direction. However, it is not limited to this, there may be only one opening 15, for example, only the first opening 16 or the second opening 17.

[0029] In some exemplary embodiments, such as Figures 6 to 8As shown, the rear shell 2 has at least one slot 18 at one end with a second opening 17 in the first direction. The slot 18 is recessed along the first direction on the end face with the second opening 17, and the depth direction of the slot 18 is consistent with the first direction. There are two slots 18, and the number of slots 18 is the same as the number of tongues 12. The two slots 18 can be located on both sides of the first cavity 14 in the third direction. The slot wall of the slot 18 is provided with a latch 19. The latch 19 can be a groove that matches the shape of the buckle 13. In order to correspond to the position of the buckle 13, the latch 19 is arranged on the slot wall of the slot 18 in the second direction near the core body 1, and can be formed by the recess of the slot wall of the slot 18 in the second direction near the core body 1.

[0030] In some exemplary embodiments, such as Figures 6 to 8 As shown, the rear shell 2 has a notch 21 located at the end of the cavity wall of the first cavity 14 away from the second opening 17 in a first direction, so as to connect the inside and outside of the first cavity 14. The cavity wall of the first cavity 14 has a pivot seat 20 near the notch 21. The pivot seat 20 can be a recessed groove in the cavity wall of the first cavity 14, which can extend to the end face of the rear shell 2 near the core body 1.

[0031] In some exemplary embodiments, such as Figures 6 to 8 As shown, after the rear shell 2 and the core body 1 are combined, the rear shell 2 is located on one side of the core body 1 in the second direction. The tongue 12 and the slot 18 are inserted one-to-one, and the buckle 13 and the latch 19 are fastened accordingly, forming a buckle 13 connection between the rear shell 2 and the core body 1. The rear shell 2 can abut against the first end face 10 of the core body 1, and the first end face 10 can cover the first opening 16. At the same time, one end of the rear shell 2 in the first direction abuts against the second end face 11, and the second end face 11 can cover the second opening 17. Thus, the rear shell 2 and the core body 1 form a sliding cavity 9. The part of the first end face 10 that covers the first opening 16 constitutes the cavity wall of the sliding cavity 9 on one side in the second direction, and the part of the second end face 11 that covers the second opening 17 constitutes the cavity wall of the sliding cavity 9 on one side in the first direction. The remaining cavity wall of the sliding cavity 9 can be formed by the cavity wall of the first cavity 14. The counterweight 4 is installed in the sliding cavity 9, and the sliding cavity 9 can guide the counterweight 4 to slide in the first direction.

[0032] Figure 9 for Figure 3 A schematic diagram of a flip cover, in some exemplary embodiments, such as Figure 6 , Figure 7 and Figure 9As shown, the flip cover 3 includes a cover body 22, a rotating shaft 23, and a support 24 arranged sequentially. The cover body 22 can be shaped to match the outlet and is slightly larger than the outer contour of the outlet. The rotating shaft 23 can be connected to the rotating shaft seat 20 to form a rotatable connection between the flip cover 3 and the back shell 2. The support 24 can be located inside the sliding cavity 9, and the end of the support 24 away from the rotating shaft 23 can contact the counterweight 4. The extension length of the support 24 can be adjusted to increase the length of the gravity lever arm of the counterweight 4, thereby increasing the gravitational torque of the counterweight 4. Thus, the closed sliding cavity can protect the counterweight 4 and the rotating shaft 23 of the flip cover, improve the service life of the drain core assembly, and keep the outlet 7 of the closed water passage 6 of the flip cover 3 closed, preventing water from entering the sliding cavity 9 and avoiding rusting of the rotating shaft 23 and the support 24 on the flip cover 3 due to long-term contact with water.

[0033] Figure 10 This is another schematic diagram of the rear shell of this exemplary embodiment. In some exemplary embodiments, such as Figure 10 As shown, the sliding cavity 9 has at least one protruding rib 25 extending along a first direction on its cavity wall. The protruding rib 25 may be a first protruding rib 26 located on the cavity wall of the first cavity 14 in a second direction. However, it is not limited to this. For example, the protruding rib 25 may be located on other cavity walls of the first cavity 14, or a second protruding rib (not shown in the figure) located on the outer wall of the core body 1. In some exemplary embodiments, multiple protruding ribs 25 are provided, including a first protruding rib 26 located on the cavity wall of the first cavity 14 and a second protruding rib located on the outer wall of the core body 1. When the counterweight 4 is installed in the sliding cavity 9, the counterweight 4 and the protruding rib 25 abut against each other. The protruding rib 25 can reduce the friction between the counterweight 4 and the cavity wall of the sliding cavity 9, and at the same time, it can support the counterweight 4. When the counterweight 4 slides, it can prevent the counterweight 4 from shifting at a large angle, keep the center of gravity of the counterweight 4 stable, and reduce the risk of reduced gravitational torque and increased friction due to tipping.

[0034] Figure 11 This is a schematic diagram of the closed state of a drain core assembly according to an exemplary embodiment. In some exemplary embodiments, such as... Figure 2 and Figure 11 As shown, the drain core assembly has two states: closed and open. In the closed state, one end of the flip cover 3 is pressed down by the counterweight 4, keeping the flip cover 3 horizontal, and the other end of the flip cover 3 closes the water outlet 7, preventing odors. In the open state, the flip cover 3 is swung by an external force, causing the flip cover 3 to open the water outlet 7, and one end of the flip cover 3 lifts the counterweight 4, allowing water to flow out from the water outlet 7. The drain core assembly can be equipped with counterweights of different weights to suit different usage conditions, thereby improving the flexibility of the drain core assembly.

[0035] Figure 12 This is a first schematic diagram of an odor-proof floor drain according to an exemplary embodiment of the present invention. Figure 13This is a second schematic diagram of an odor-proof floor drain according to an exemplary embodiment of the present invention. Figure 14 for Figure 12 A breakdown diagram of the odor-proof floor drain in the image. Figure 12 The drain core component in the drain is in the off state. Figure 13 The drain core assembly is in the open state. In some exemplary embodiments, an odor-proof drain, such as... Figures 12 to 14 As shown, the odor-proof floor drain may include the floor drain body 27 and the floor drain core assembly described above, and the floor drain core assembly is detachably connected to the floor drain body 27.

[0036] In some exemplary embodiments, such as Figures 12 to 14 As shown, a sealing ring 5 can be provided on the drain core assembly, and the sealing ring 5 is fitted around the outer periphery of the core body 1. During the assembly of the odor-proof drain, first, the sealing ring 5 is nested into the groove above the mounting thread of the core body 1. Then, the flip cover 3 is hung on the back cover 2, and the counterweight 4 is pressed onto the flip cover 3. The back cover 2, flip cover 3, and counterweight 4 form a whole. Subsequently, the whole assembly consisting of the back cover 2, flip cover 3, and counterweight 4 is installed on the back of the core body 1. Next, the drain core assembly is assembled as follows... Figure 14 As indicated by the arrow, insert the drain core assembly into the hole of the drain body 27. By rotating the drain core assembly, the mounting threads of the drain core assembly are engaged with the threads of the drain body 27. Rotate to the bottom, and the entire drain installation is complete.

[0037] In some exemplary embodiments, such as Figures 12 to 14 As shown, when the odor-proof floor drain is working, the water first flows from the ground into the cavity of the drain body 27, and then flows into the water passage 6 of the core body 1, just as... Figure 12 As indicated by the arrow, the drain core assembly is currently closed to prevent odors. Water accumulates above the flip cover 3, and the flip cover 3 experiences increasing pressure from the weight of the water. During this process, water will not enter the sliding cavity 9, protecting the rotating shaft 23 and support 24 from prolonged contact with water and preventing rust. When the combined gravitational torque of the flip cover 3 and the water exceeds the gravitational torque of the counterweight 4, the flip cover 3 will rotate and flip downwards, simultaneously lifting the counterweight 4 until it reaches its limit position. During this process, water will not enter the sliding cavity 9, preventing water from entering the rotating shaft 23 and support 24 on the flip cover 3 and causing rust. As the water flow decreases, because the gravitational torque of the counterweight 4 exceeds the combined gravitational torque of the flip cover 3 and the water, the flip cover 3 rotates and slowly closes until it is fully closed.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of those features.

[0040] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A drain core assembly, characterized in that, include: The core body is equipped with a water passage; The rear shell is detachably connected to the core body and forms a sliding cavity with the core body; A flip cover, rotatably connected to the rear shell, with one end extending into the sliding cavity; A counterweight is disposed within the sliding cavity and configured to slide along a first direction. The counterweight is pressed against one end of the flip cover, so that the counterweight uses its own weight to keep the flip cover closed at the outlet of the water passage.

2. The drain core assembly according to claim 1, characterized in that, The rear shell is provided with a first cavity extending along the first direction, and the cavity of the first cavity is provided with at least one opening for filling the counterweight into the first cavity. The rear shell abuts against the outer wall of the core body, and the outer wall of the core body covers the at least one opening to form the sliding cavity.

3. The drain core assembly according to claim 2, characterized in that, The outer wall of the core body includes a first end face located at one end of the core body in a second direction, the second direction being perpendicular to the first direction; The rear shell is located on one side of the core body in the second direction and abuts against the first end face, and the rear shell and the core body are snap-fitted together.

4. The drain core assembly according to claim 3, characterized in that, The core body is provided with at least one tongue, which extends along the first direction. One end of the tongue is connected to the outer wall of the core body in the first direction, and the other end is provided with a buckle. The rear shell has at least one slot at one end in the first direction, the depth direction of the slot is consistent with the first direction, and the slot wall has a fastener. The tongue and the slot are inserted into each other in a corresponding manner, and the buckle and the latch are engaged in a corresponding manner to form a buckle connection.

5. The drain core assembly according to claim 4, characterized in that, The outer wall of the core body also includes a second end face, which is located on the side of the first end face in the first direction and connected to the first end face. The first end face and the second end face form a stepped surface. One end of the rear shell abuts against the second end face in the first direction, and one end of the tongue is connected to the second end face and spaced apart from the first end face.

6. The drain core assembly according to claim 5, characterized in that, The plug is provided with two plugs, which are arranged at a distance from each other in a third direction, and the third direction is perpendicular to the first direction and the second direction. The first cavity is provided with two slots, which are respectively located on both sides of the first cavity in the third direction; Each of the said tongues is plate-shaped, the latch is located on the side of the tongue near the first end face in the second direction, and the buckle is located on the groove wall of the slot near the core body in the second direction.

7. The drain core assembly according to claim 5, characterized in that, The opening is provided in two parts, including a first opening and a second opening. The first opening is located at one end of the first cavity in the second direction, and the second opening is located at one end of the first cavity in the first direction. The first end face is configured to cover the first opening, and the second end face is configured to cover the second opening.

8. The drain core assembly according to any one of claims 2 to 7, characterized in that, The sliding cavity wall is provided with at least one protruding rib extending along the first direction, and the counterweight block and the protruding rib abut against each other.

9. The drain core assembly according to claim 8, characterized in that, The ribs are provided in multiple ways, including a first rib located on the cavity wall of the first cavity and / or a second rib located on the outer wall of the core body.

10. The drain core assembly according to any one of claims 2 to 7, characterized in that, The cavity wall of the first cavity is provided with a notch, one end of the flip cover extends into the first cavity through the notch, and the flip cover pivot is connected to the cavity wall of the first cavity.

11. An odor-proof floor drain, characterized in that, It includes a drain body and a drain core assembly as described in any one of claims 1 to 10, wherein the drain core assembly is detachably connected to the drain body.

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