Floor drain

Abstract

The present invention discloses a floor drain, comprising: a floor drain main body having a drainage pipe; a drainage tray disposed at the upper port of the floor drain main body, with an interface for connecting to the drainage pipe of a water-using device and drainage holes arranged circumferentially around the interface for draining the ground water in the middle of the drainage tray; a pipe sleeve assembly disposed in the floor drain main body to form two diversion cavities corresponding to the interface and the drainage holes respectively inside the floor drain main body. The floor drain provided by the present invention increases the resistance from the interface to the drainage holes by adding a sleeve assembly with two diversion cavities, thereby effectively reducing the amount of water surging from the water entering the floor drain to the drainage holes when the drainage volume of the water-using device increases instantaneously. Moreover, the increase in the resistance to the drainage holes can also increase the proportion of water flowing out from the drainage pipe of the floor drain main body and can effectively buffer the amount of water entering the floor drain through the interface.

Description

Technical Field

[0001] The present invention relates to the technical field of indoor drainage, and in particular to a floor drain for drainage. Background Art

[0002] As is well known, two types of floor drains are usually installed on the floor of a bathroom. The first type of floor drain is specifically used for draining water from the floor, and the second type of floor drain is specifically used for draining water from water-using devices above the floor. For example, it is used for draining water from a washbasin and a washing machine.

[0003] Currently, a new type of floor drain that can replace the second type of floor drain has emerged in the prior art. This new type of floor drain has the function of mainly draining water from water-using devices and also has the function of assisting in draining water from the floor. The reason why this new type of floor drain can achieve the above two drainage functions is that: an interface for connecting to a drain pipe (this drain pipe is the drain pipe of a water-using device) is provided in the middle of the drain pan of the floor drain, and drain holes (slits) are provided on the drain pan around the interface. The water in the drain pipe enters the floor drain through the interface and is drained away, while the water on the floor enters the floor drain through the drain holes and is drained away.

[0004] However, the above-mentioned new type of floor drain in the prior art has the following defects when in use:

[0005] When the drainage volume of the drainage device increases instantaneously (that is, when the water entering the floor drain through the drain pipe increases instantaneously), this part of the water will surge a large amount to the floor through the drain holes of the drain pan because the floor drain cannot drain it instantaneously. This phenomenon is more obvious in floor drains with greater drainage resistance. For example, this phenomenon is more obvious in floor drains with an anti-odor structure inside.

[0006] And the applicant has found through long-term use practice and research that the reason for the above phenomenon is that: the interface of the drain pan and the drain holes of the drain pan commonly correspond to the same cavity. Summary of the Invention

[0007] In view of the above technical problems existing in the prior art, an embodiment of the present invention provides a floor drain.

[0008] To solve the above technical problems, the technical solution adopted in the embodiment of the present invention is:

[0009] A floor drain, comprising:

[0010] A floor drain main body having a drainage pipe;

[0011] A drain pan disposed at the upper port of the floor drain main body. An interface for connecting to a drain pipe of a water-using device is provided in the middle of the drain pan, and drain holes arranged circumferentially and located around the interface for draining water from the floor are provided.

[0012] A sleeve assembly is disposed in the floor drain body to form two diversion cavities in the interior of the floor drain body corresponding to the interface and the drain hole respectively.

[0013] Preferably, the sleeve assembly includes:

[0014] An inner tube, the upper end of which is connected to the interface, and the first diversion cavity is formed inside the inner tube;

[0015] A diversion sleeve, which is sleeved around the outer periphery of the inner tube, and the upper end of the diversion sleeve is connected to the upper port of the floor drain body around the drain hole, so that the second diversion cavity is defined between the diversion sleeve and the inner tube.

[0016] Preferably, the drain pipe extends radially on one side of the floor drain body at a lower position; the floor drain further includes a water storage cylinder; the water storage cylinder is disposed around the outer periphery of the diversion sleeve; wherein:

[0017] The first diversion cavity and the second diversion cavity communicate with the water storage cylinder, so that the water flowing through the first diversion cavity and the water flowing through the second diversion cavity can flow into the water storage cylinder;

[0018] Hollow portions are formed on the upper part of the barrel wall of the water storage cylinder, and the hollow portions are used for allowing the water flowing through the water storage cylinder to enter the drain pipe.

[0019] Preferably, a preset distance is provided between the lower end of the inner tube and the bottom of the water storage cylinder so that the water flowing through the first diversion cavity flows into the water storage cylinder from the lower end of the inner tube; the lower end of the diversion sleeve is higher than the lower end of the inner tube, and a preset annular gap is provided between the lower end of the diversion sleeve and the inner tube so that the water flowing through the second diversion cavity flows into the water storage cylinder from the lower end of the diversion sleeve.

[0020] Preferably, the lower end of the inner tube is formed with an arc-shaped outwardly turned edge, and a groove is formed between the outwardly turned plate and the tube wall of the inner tube, and the lower end of the diversion sleeve extends into the groove.

[0021] Preferably, the lower part of the diversion sleeve has a smaller diameter.

[0022] Preferably, a plurality of vertical first positioning plates are circumferentially arranged on the bottom of the water storage cylinder, and the lower end of the inner tube abuts against the first positioning plates.

[0023] Preferably, a plurality of vertical second positioning plates adapted to the groove are circumferentially arranged at the lower end of the diversion sleeve.

[0024] Preferably, the upper end of the inner tube passes through the interface of the drain pan; wherein:

[0025] An annular protrusion is provided on the inner wall of the inner pipe; the upper end of the inner pipe is used for the joint of the drain pipe to be inserted and is in close contact with the outer periphery of the joint of the drain pipe by means of the annular protrusion.

[0026] Preferably, the floor drain further includes a mounting plate, which is arranged at the upper port of the floor drain main body and cooperates with the floor drain main body to clamp the edge of the floor drain hole on the ground; wherein:

[0027] The drainage tray is arranged on the mounting plate.

[0028] Compared with the prior art, the beneficial effects of the floor drain disclosed in the present invention are:

[0029] The floor drain provided by the present invention increases the resistance from the interface to the drain hole by adding a sleeve assembly formed with two diversion cavities, thereby effectively reducing the amount of water surging into the drain hole when the drainage volume of the water-using device increases instantaneously. Moreover, the increase in the resistance to the drain hole can also increase the proportion of water flowing out from the drain pipe of the floor drain main body and can effectively buffer the amount of water entering the floor drain through the interface.

[0030] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the present invention.

[0031] An overview of various implementations or examples of the technology described in the present invention is not a full disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In the drawings which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The drawings generally illustrate various embodiments by way of example and not limitation, and are used together with the description and the claims to explain the embodiments of the invention. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended as an exhaustive or exclusive embodiment of the device or method.

[0033] Figure 1 It is a schematic diagram of the external structure of the floor drain provided by the embodiment of the present invention.

[0034] Figure 2 It is a three-dimensional cross-sectional view of the floor drain provided by the embodiment of the present invention.

[0035] Figure 3 It is a plan cross-sectional view of the floor drain provided by the embodiment of the present invention.

[0036] Figure 4 ForFigure 3 An enlarged view of local area A.

[0037] Figure 5 A three-dimensional exploded view of the floor drain provided by the embodiment of the present invention.

[0038] Figure 6 A planar exploded view of the floor drain provided by the embodiment of the present invention.

[0039] Figure 7 A three-dimensional exploded view of the mounting plate and the drainage plate in the floor drain provided by the embodiment of the present invention.

[0040] Reference numerals:

[0041] 10 - floor drain main body; 11 - drainage pipe; 12 - lower outer edge; 20 - drainage plate; 21 - interface; 22 - drainage hole; 23 - chute; 30 - mounting plate; 31 - upper outer edge; 32 - first step surface; 33 - second step surface; 34 - clamping block; 40 - pipe sleeve assembly; 41 - inner pipe; 411 - outward turned edge; 412 - groove; 413 - annular protrusion; 42 - diversion sleeve; 421 - second positioning plate; 422 - first edge; 50 - water storage cylinder; 51 - hollow part; 52 - first positioning plate; 53 - second edge; 60 - joint; 71 - rubber pad; 72 - annular gasket; 73 - anti-slip pad; 81 - first diversion cavity; 82 - second diversion cavity. Detailed implementation manners

[0042] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0043] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings as understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0044] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted in the present invention.

[0045] Embodiments of the present invention disclose a floor drain, which is mainly used for draining water for water-using devices and can also assist in draining water from the ground. The water-using devices can be washbasins, washing machines, etc. in a bathroom.

[0046] As Figures 1 to 7 shown, the floor drain includes: a floor drain main body 10, a drain pan 20, and a pipe sleeve assembly 40.

[0047] The floor drain main body 10 is used to be installed on the ground (such as the bathroom floor), and its lower part is located below the ground. A drain pipe 11 is formed on the floor drain main body 10 located below the ground, and the drain pipe 11 is connected to a drainage shaft to drain the water flowing through the floor drain into the drainage shaft.

[0048] As Figure 2 and Figure 3 shown, the drain pan 20 is arranged at the upper port of the floor drain main body 10. An interface 21 is formed in the middle of the drain pan 20, and a plurality of circumferentially arranged drain holes 22 are formed around the interface 21; the drain pipe of the above-mentioned water-using device is connected to the interface 21 to enter the floor drain main body 10 through the interface 21, and the water on the ground enters the floor drain main body 10 through the drain holes 22.

[0049] The pipe sleeve assembly 40 is arranged inside the floor drain main body 10, and the pipe sleeve assembly 40 includes an inner pipe 41 and a diversion sleeve 42; as Figure 3As shown in the figure, the upper end of the inner pipe 41 is connected to the interface 21, so that the water discharged by the water-using device flows into the inner pipe 41 after passing through the drain pipe and the interface 21 of the drain pan 20; the flow guide sleeve 42 is arranged outside the inner pipe 41, the upper end of the flow guide sleeve 42 is connected to the upper port of the floor drain main body 10, and the circumferentially arranged drain holes 22 are located within the upper port of the flow guide sleeve 42, so that the water on the ground flows into the space between the inner pipe 41 and the flow guide sleeve 42 through the drain holes 22. In this way, the above-mentioned inner pipe 41 forms a first flow guide cavity 81 for guiding the water flowing into the floor drain main body 10 from the interface 21; and a second flow guide cavity 82 for guiding the water flowing into the floor drain main body 10 from the drain holes 22 is formed between the inner pipe 41 and the flow guide sleeve 42. These two flow guide cavities are used to make the water from two sources flow into the floor drain main body 10 in a separated manner, and can only converge in the cavity between the flow guide sleeve 42 and the floor drain main body 10. Moreover, the water entering the floor drain main body 10 through the interface 21 needs to pass through the cavity between the inner pipe 41, the flow guide sleeve 42 and the floor drain main body 10 before it can flow reversely upward and enter the second flow guide cavity 82.

[0050] The advantages of the floor drain with the above structural features are as follows:

[0051] When the drainage volume of the water-using device (such as a washing machine) increases instantaneously, the water entering the floor drain main body 10 through the interface 21 will not directly enter the second flow guide cavity 82 corresponding to the drain holes directly and defined by the inner pipe 41 and the flow guide sleeve 42 because it first flows into the inner pipe 41; that is to say, the water entering the floor drain main body 10 through the interface 21 first enters the inner pipe 41, and then enters the cavity between the flow guide sleeve 42 and the floor drain main body 10 through the inner pipe 41, and then this water is allowed to enter the second flow guide cavity 82. This will inevitably increase the damping of the water discharged by the water-using device entering the second flow guide cavity 82, and thus can effectively reduce the amount of water entering the second guide cavity, so that more water can flow out from the drain pipe 11 of the floor drain main body 10.

[0052] The floor drain provided by the present invention increases the resistance from the interface 21 to the drain holes 22 by adding a sleeve assembly formed with two flow guide cavities, and thus effectively reduces the amount of water surging to the drain holes 22 when the drainage volume of the water-using device increases instantaneously. Moreover, the increase in the resistance to the drain holes 22 can also increase the proportion of water flowing out from the drain pipe 11 of the floor drain main body 10, and can also effectively buffer the amount of water entering the floor drain through the interface 21.

[0053] The applicant found that when the new floor drain mentioned in the background art is set as an anti-odor structure, the phenomenon of water surging to the drain holes 22 is more obvious. Therefore, an embodiment of the present invention provides a floor drain, which not only has an anti-odor function, but also can effectively reduce the amount of water surging to the drain holes 22.

[0054] In this embodiment, in addition to the above components and structural features, the floor drain has the following components and structural features.

[0055] As Figure 5 and Figure 6 shown, the floor drain further has: a water storage cylinder 50, a mounting plate 30, and a plurality of sealing components.

[0056] As Figure 3 shown, the drain pipe 11 extends radially from a side of the floor drain main body 10 near the bottom. The water storage cylinder 50 is placed outside the diversion sleeve 42. A hollow part 51 is formed on the cylinder wall of the water storage cylinder 50 near the upper end. The lower ends of the above inner pipe 41 and the diversion sleeve 42 both extend into the bottom of the water storage cylinder 50 and form a certain distance from the bottom of the cylinder. The water storage cylinder 50 is used to prevent the odor in the drain pipe 11 of the floor drain main body 10 from flowing back above the ground through the floor drain main body 10. The specific reason is: because the water storage cylinder 50 communicates with the first diversion cavity 81 (or the inner pipe 41) and the second diversion cavity 82 at the lower part of the water storage cylinder 50, which makes: the water storage cylinder 50, the first diversion cavity 81, and the second diversion cavity 82 form a communicating vessel. After no water enters the floor drain main body 10, a part of the water that entered the floor drain main body 10 first will remain in the floor drain main body 10. At this time, the liquid levels of this part of the water in the water storage cylinder 50, the first diversion cavity 81, and the second diversion cavity 82 are the same. This water is used to block the odor to prevent the odor from flowing backward and flowing into the room through the drain holes 22 of the drain tray 20.

[0057] In this embodiment, as Figure 2 and Figure 3 shown, the lower end of the inner pipe 41 is lower than the lower end of the diversion sleeve 42, and the lower end of the inner pipe 41 forms an outward flange 411. The outward flange 411 and the inner pipe 41 enclose a groove 412, and the lower end of the diversion sleeve 42 extends into the groove 412. In this way, after the water on the ground enters the second diversion cavity 82 through the drain holes 22, it then passes through the gap between the diversion sleeve 42 and the bottom of the groove 412. Under the guiding action of the outward flange 411, the flow direction is changed and it flows upward, and then enters the water storage cylinder 50, and can flow into the floor drain main body 10 outside the water storage cylinder 50 through the hollow part 51, and is discharged through the drain pipe 11; and the water drained from the water-using device enters the first diversion cavity 81 (or the inner pipe 41) through the interface 21, and then passes through the gap between the lower end of the inner pipe 41 and the bottom of the water storage cylinder 50. Under the guiding action of the outward flange 411, the flow direction is changed and it flows upward, and then enters the water storage cylinder 50, and can flow into the floor drain main body 10 outside the water storage cylinder 50 through the hollow part 51, and is discharged through the drain pipe 11.

[0058] The reason why the inner pipe 41 and the diversion sleeve 42 with the above structural and mating relationships have greater advantages in reducing the amount of water surging upward to the drain holes 22 when the drainage volume of the water-using device increases instantaneously is as follows:

[0059] An outward-turned edge 411 is provided at the lower end of the inner tube 41, and the lower end of the flow guide sleeve 42 extends into the groove 412 formed by the outward-turned edge 411. The water discharged from the water-using device passes through the inner tube 41 and, after being redirected by the outward-turned edge 411, moves upward at a certain speed. Due to inertia, the upward-moving water is more likely to flow out from the hollow part 51 at the upper part of the water storage cylinder 50. Before the water enters the second flow guide cavity 82, it needs to be redirected downward and flow towards the bottom of the groove 412, and then be redirected upward again after passing through the bottom of the groove 412. This will inevitably increase the damping of the water flowing into the second guide cavity, thereby causing a larger proportion of the water to flow out from the hollow part 51 of the water storage cylinder 50, and further reducing the amount of water surging upward to the drain hole 22. Preferably, the diameter of the lower part of the flow guide sleeve 42 is reduced, which will inevitably increase the resistance of the water flowing towards the second flow guide cavity 82.

[0060] It should be noted that although the above structure reduces to a certain extent the flow cross-section allowing water to pass through the second flow guide cavity 82, that is, reduces the drainage capacity of the floor drain for the water on the ground. However, this does not seriously affect the use effect of the floor drain. The reason is that: the floor drain provided by the present invention is only used to assist in draining the water on the ground. Since the floor drain is not arranged at the lowest position, the water near it will not be retained due to insufficient drainage capacity.

[0061] The above-mentioned mounting plate 30 is arranged at the upper port of the floor drain in a threaded connection manner. The upper port of the floor drain main body 10 forms a lower outer edge 12, and the mounting plate 30 is formed with an upper outer edge 31 opposite to the lower outer edge 12. A sealing gasket 72 with a U-shaped cross-section is arranged between the upper outer edge 31 and the lower outer edge 12, and an anti-slip pad 73 is arranged above the sealing gasket 72; the side of the floor drain hole for installing the floor drain main body 10 extends into the U-shaped groove of the sealing gasket 72, and by screwing the mounting plate 30, the upper outer edge 31 and the lower outer edge 12 clamp the side of the floor drain hole, and the anti-slip pad 73 is used to prevent the mounting plate 30 from loosening.

[0062] The above-mentioned drainage plate 20 is arranged on the mounting plate 30. Specifically, as Figure 7 shown, the mounting plate 30 is provided with mounting holes, and clamping blocks 34 are arranged on the hole walls of the mounting holes; the outer edge of the drainage plate 20 is provided with a sliding groove 23, and the sliding groove 23 has a vertically extending section and a circumferentially extending section. By placing the drainage plate 20 vertically in the mounting hole, the clamping blocks 34 slide into the vertically extending section, and by screwing the drainage plate 20, the clamping blocks 34 slide into the circumferentially extending section. In this way, the drainage plate 20 is installed on the mounting plate 30.

[0063] As Figure 2 and Figure 6As shown, the upper end of the inner tube 41 passes through the interface 21 and protrudes above the drainage tray 20. An annular protrusion 413 is formed on the inner wall of the inner hole near the upper end of the inner tube 41. The connector 60 at the distal end of the drain pipe connected to the water-using device has a plug. The plug is inserted into the inner tube 41 from the upper end of the inner tube 41 and passes through the annular protrusion 413, such that the annular protrusion 413 is in close contact with the outer peripheral surface of the plug of the connector 60, thereby having a certain positioning and sealing effect on the connector 60.

[0064] As Figure 4 and in combination with Figure 3 As shown, the upper ends of the above-mentioned flow guide sleeve 42 and the water storage cylinder 50 are both connected to the mounting plate 30. Specifically, a first step surface 32 and a second step surface 33 are formed on the mounting plate 30 below the mounting hole. A first edge 422 is formed at the upper end of the flow guide sleeve 42, and a second edge 53 is formed at the upper end of the water storage cylinder 50. The second edge 53 is lapped on the second step surface 33. The rubber pad 71 is disposed on the first step surface 32 and covers the upper end of the water storage cylinder 50. The first edge 422 is lapped on the rubber pad 71, and the drainage tray 20 presses against the upper end of the flow guide sleeve 42. In this way, the flow guide sleeve 42 and the water storage cylinder 50 are connected to the mounting plate 30 by their upper ends.

[0065] As Figure 2 and Figure 3 As shown, the inner tube 41 and the flow guide sleeve 42 are positioned by the following structure: A plurality of vertical first positioning plates 52 are provided at the bottom of the water storage cylinder 50. The plurality of first positioning plates 52 are circumferentially arranged, and the outward-turned edge 411 at the lower end of the inner tube 41 abuts against the first positioning plates 52, thereby realizing the radial positioning of the inner tube 41. A plurality of vertical second positioning plates 421 are oppositely arranged on the flow guide sleeve 42. The second positioning plates 421 are adapted to the grooves 412, and the plurality of second positioning plates 421 are circumferentially arranged and embedded in the grooves 412, thereby realizing the radial positioning of the flow guide sleeve 42.

[0066] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention having equivalent elements, modifications, omissions, combinations (e.g., solutions that cross various embodiments), adaptations, or changes. The elements in the claims will be broadly interpreted based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application. The examples will be interpreted as non-exclusive. Therefore, this specification and the examples are intended to be considered only as examples, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0067] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more aspects thereof) may be used in combination with each other. For example, those of ordinary skill in the art may use other embodiments when reading the above description. Additionally, in the above detailed description, various features may be grouped together to simplify the present invention. This should not be construed as an intention that an unclaimed disclosed feature is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all of the features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, where each claim independently serves as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the present invention should be determined with reference to the appended claims and the full scope of equivalents to which these claims are entitled.

[0068] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be regarded as falling within the protection scope of the present invention.

Claims

1. A floor drain, characterized in that, Comprising: A floor drain main body having a drainage pipe; A drainage tray disposed at the upper port of the floor drain main body, with an interface for connecting to the drain pipe of a water-using device opened in the middle of the drainage tray and drainage holes arranged circumferentially around the interface for draining floor water; A pipe sleeve assembly disposed in the floor drain main body for forming two diversion cavities in the interior of the floor drain main body corresponding to the interface and the drainage holes respectively; The pipe sleeve assembly includes: An inner pipe, the upper end of which is connected to the interface, and a first diversion cavity is formed inside the inner pipe; A diversion sleeve sleeved around the outer periphery of the inner pipe, the upper end of the diversion sleeve being connected to the upper port of the floor drain main body around the drainage holes, so that the diversion sleeve and the inner pipe define a second diversion cavity; The drainage pipe extends radially on one side of the floor drain main body at a lower position; the floor drain further includes a water storage cylinder; the water storage cylinder is disposed around the diversion sleeve; wherein: The first diversion cavity and the second diversion cavity communicate with the water storage cylinder, so that the water flowing through the first diversion cavity and the water flowing through the second diversion cavity can flow into the water storage cylinder; Hollow portions are opened on the barrel wall of the upper part of the water storage cylinder, and the hollow portions are used for allowing the water flowing through the water storage cylinder to enter the drainage pipe; The lower end of the inner pipe has a preset distance from the bottom of the water storage cylinder so that the water flowing through the first diversion cavity flows into the water storage cylinder from the lower end of the inner pipe; the lower end of the diversion sleeve is higher than the lower end of the inner pipe, and the lower end of the diversion sleeve has a preset annular gap with the inner pipe so that the water flowing through the second diversion cavity flows into the water storage cylinder from the lower end of the diversion sleeve; An arc-shaped outward-turned edge is formed at the lower end of the inner pipe, and a groove is formed by the outward-turned edge and the pipe wall of the inner pipe, and the lower end of the diversion sleeve extends into the groove; The upper end of the outward-turned edge is lower than the lower edge of the hollow portion of the water storage cylinder.

2. The floor drain according to claim 1, characterized in that, The lower part of the diversion sleeve has a smaller diameter.

3. The floor drain according to claim 1, characterized in that, A plurality of vertical first positioning plates are circumferentially arranged on the bottom of the water storage cylinder, and the lower end of the inner pipe abuts against the first positioning plates.

4. The floor drain according to claim 1, wherein, A plurality of vertical second positioning plates adapted to the groove are circumferentially arranged at the lower end of the diversion sleeve.

5. The floor drain according to claim 1, characterized in that, The upper end of the inner pipe passes through the interface of the drainage tray; wherein: An annular protrusion is provided on the inner pipe wall of the inner pipe; the upper end of the inner pipe is for inserting the joint of the drain pipe and is in close contact with the outer periphery of the joint of the drain pipe by means of the annular protrusion.

6. The floor drain according to claim 1, characterized in that, The floor drain further includes a mounting plate, the mounting plate is disposed at the upper port of the floor drain main body and cooperates with the floor drain main body for clamping the edge of the floor drain hole on the ground; wherein: The drainage tray is disposed on the mounting plate.

Images