Floor drain

Abstract

The utility model provides a floor drain belongs to floor drain technical field. It has solved the problem of poor sealing effect of the existing floor drain core. The floor drain, including the floor drain shell of cylinder, mounting seat, sealing core, sealing gasket and reset piece, the lower end of floor drain shell has the connecting portion of vertical setting cylinder, the inboard of lower end of connecting portion has the protruding ring -shaped fender one, the upper end of mounting seat is in the connecting portion and the inboard of mounting seat upper end has the protruding ring -shaped fender two, the lower end surface of fender two and the upper end surface of fender one abut, the sealing gasket is arranged in the upper side of mounting seat, and the floor drain still includes the gland of ring shape, the gland is connected in the connecting portion and is located the upper side of sealing gasket, the gland along screwing in can tightly press the sealing gasket on the top surface of mounting seat. The floor drain has the advantage that the sealing effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of floor drain technology and relates to a floor drain. Background Technology

[0002] Floor drains are an important interface connecting the drainage pipe system and the indoor floor. They are an important component of the residential drainage system. Their basic function is to leak water, but as living standards continue to improve, existing floor drains often also need to have the functions of preventing backflow and odor.

[0003] For example, a drain core was designed and a Chinese patent was applied for, with application number 202120502748.7 and publication number CN214363975U. The drain core includes a cylindrical outer shell with an open top, a mounting base, a sealing gasket, and an umbrella-shaped movable flap, all disposed within the outer shell. The upper end of the outer shell has external threads, and the lower side has a drain outlet communicating with its inner cavity. The sealing gasket is connected to the lower side of the mounting base. A support column is provided on the bottom wall of the inner side of the outer shell. The lower end of the movable flap is slidably connected to the outside of the support column. A spring is provided inside the lower end of the movable flap, which can move the movable flap upward so that its upper end abuts against the sealing gasket to form a seal. A threaded connection section is provided on the inner side of the outer shell above the drain outlet. The mounting base is annular and threadedly connected to the threaded connection section. The length of the threaded connection section along the axis of the outer shell is longer than that of the mounting base. An operating part for operating the mounting base is provided on the inner side of the mounting base.

[0004] However, the sealing gasket in the drain core is fitted onto the outer side of the lower end of the mounting base in a sleeve manner. In order to facilitate the fitting and assembly, there will inevitably be a gap between the two, resulting in a poor sealing effect. Therefore, in actual use, it is inevitable that odor will overflow upward through this gap. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a floor drain that solves the problem of poor sealing performance of the existing floor drain core.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A floor drain includes a cylindrical drain shell, a mounting base disposed at the bottom of the drain shell, a sealing core vertically inserted into the mounting base, a circular sealing gasket, and a resetting member. The upper end of the drain shell is a water inlet, and the lower end of the drain shell has a vertically arranged cylindrical connecting portion, the lower end of which is a drain outlet. The sealing core can move upward under the action of the resetting member and abut against the sealing gasket to block the water inlet and the drain outlet. The characteristic feature is that the lower end of the connecting portion contains... The floor drain has a first annular protruding flange on one side. The upper end of the mounting base passes through the connecting part, and the outer side of the upper end of the mounting base has a second annular protruding flange. The lower end face of the second flange abuts against the upper end face of the first flange. The sealing gasket is disposed on the upper side of the mounting base. The floor drain also includes an annular pressure cap. The pressure cap is threaded into the connecting part and located above the sealing gasket. When the pressure cap is screwed in along the thread, it can press the sealing gasket tightly against the top surface of the mounting base.

[0008] In its default state, the sealing core of the local drain moves upward and close to the sealing gasket under the action of the reset element, sealing the drain and blocking the flow between the inlet and outlet, thus preventing backflow and odor. When the water pressure at the inlet at the top of the drain is high, the weight of the water can push the sealing core downward against the force of the reset element and away from the sealing gasket, allowing the inlet and outlet to connect and the water to drain downward.

[0009] In this drain, the sealing gasket is pressed tightly against the top surface of the mounting base by a threaded cap to achieve a seal. There are no gaps between the three, resulting in a good sealing effect. The second flange on the upper outer side of the mounting base abuts against the upper side of the first flange at the lower end of the connection part, which allows the cap to be tightened to tightly press the sealing gasket, mounting base and drain shell together to achieve a seal. This not only makes assembly more convenient, but also provides a better sealing effect.

[0010] In the aforementioned type of floor drain, the outer surface of the sealing gasket has a protruding, annular sealing portion. The bottom surface of the sealing portion abuts against the top surface of the mounting base. The inner wall of the connecting portion, directly opposite the sealing portion, is a smooth cylindrical surface. The sealing portion can deform outward under the action of the pressure cap and tightly abut against the inner wall of the connecting portion. The sealing portion is positioned against the top surface of the mounting base, allowing it to extend outward under the force of both upper and lower sides when the pressure cap is pressed down, tightly abutting against the inner wall of the connecting portion to achieve a seal. This further ensures the sealing performance between the sealing gasket and the floor drain shell, preventing odors from escaping through the gap in the threaded connection between the pressure cap and the floor drain shell.

[0011] In the aforementioned floor drain, the bottom of the inner side of the pressure cap has a downwardly protruding annular protrusion, and the bottom of the outer side of the pressure cap has a downwardly protruding annular protrusion. An upwardly recessed annular groove is formed between the first and second protrusions. The top of the sealing gasket has an upwardly protruding annular limiting portion. The limiting portion engages with the groove and abuts tightly against the bottom of the groove. The lower end of the second protrusion presses firmly against the top surface of the sealing portion. Through the cooperation of the groove and the limiting portion, the sealing gasket is prevented from significant radial displacement, thus ensuring a tight seal between it and the sealing core. Simultaneously, the second protrusion forming the groove presses against the sealing portion, causing it to deform outwards to form a seal. The second protrusion is closer to the inner wall of the connecting portion, resulting in a better compression deformation effect.

[0012] In the aforementioned type of floor drain, the pressure cap has several through holes vertically extending through it. The lower ends of all the through holes are located at the bottom of the slot, and the limiting part blocks all the through holes. The opening of the through holes provides a force-bearing position for the pressure cap, facilitating the installation and removal of the pressure cap. At the same time, the limiting part blocking all the through holes ensures the sealing between the pressure cap and the sealing gasket after the through holes are opened.

[0013] In one type of floor drain described above, the bottom of the inner side of the sealing gasket has a conical sealing surface that abuts against the sealing core. Using the conical sealing surface to cooperate with the sealing core achieves a better seal.

[0014] In the aforementioned floor drain, the upper surface of the first baffle and the lower surface of the second baffle are both flat and abut each other. The abutting of the flat surfaces on the first and second baffles not only makes the installation of the mounting base more stable, but also forms a hard seal between them when the pressure cap is pressed down, further improving the sealing effect.

[0015] In one type of floor drain described above, the mounting base has a protruding cylindrical boss, through which the sealing core passes. An annular groove is formed on the inner side of the upper end of the boss. The reset element is a spring, with one end resting against the bottom surface of the groove and the other end resting against the sealing core. The groove on the inner side of the boss, allowing the spring to extend into it, fully utilizes the space between the mounting base and the boss, shortening the overall vertical dimension of the floor drain and facilitating its installation in various locations.

[0016] In the aforementioned type of floor drain, the mounting base is an integral structure, including a base, a ring-shaped connecting seat located above the base, and two elongated support arms. The two support arms are respectively positioned on opposite sides of the base, with one end of each support arm integrated with the side of the base and the other end integrated with the bottom of the connecting seat. Both opposing sides of the two support arms have convex arc-shaped surfaces. Using two elongated support arms to connect the base and the connecting seat allows for ample space for water flow, ensuring rapid drainage. Furthermore, the arc-shaped surfaces on the support arms prevent hair and other debris from getting caught.

[0017] Compared with existing technologies, the sealing gasket in the local drain uses a threaded cap that is pressed tightly against the top surface of the mounting base to achieve a seal. There are no gaps between the three, resulting in a good sealing effect. The second flange on the upper outer side of the mounting base abuts against the upper side of the first flange at the lower end of the connection part, which allows the cap to be tightened to tightly press the sealing gasket, mounting base, and drain shell together to achieve a seal. This not only makes assembly more convenient but also provides a better sealing effect. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of a local leak.

[0019] Figure 2 This is a magnified view of a local leak.

[0020] In the diagram, 1. Drain shell; 11. Inlet; 12. Connecting part; 13. Drain outlet; 14. First retaining edge; 2. Mounting base; 21. Second retaining edge; 22. Boss; 23. Groove; 24. Base; 25. Connecting base; 26. Support arm; 3. Sealing core; 4. Sealing gasket; 41. Sealing part; 42. Limiting part; 43. Sealing surface; 5. Reset part; 6. Pressure cap; 61. First protrusion; 62. Second protrusion; 63. Slot; 64. Through hole; 7. Grate; 8. Filter screen; 9. Protrusion. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1 and Figure 2As shown, the drain includes a grate 7, a filter screen 8, a vertically arranged cylindrical drain shell 1, a mounting base 2 located at the bottom of the drain shell 1, a sealing core 3 vertically inserted into the mounting base 2, a circular sealing gasket 4, and a reset component 5. The upper end of the drain shell 1 is a water inlet 11, and the lower end of the drain shell 1 has a vertically arranged cylindrical connecting portion 12, the lower end of which is a drain outlet 13. The upper end of the drain shell 1 is rectangular, and each of the four inner corners of the upper end of the drain shell 1 has a protruding protrusion 9. The grate 7 is located on the upper side of the four protrusions 9, and the outer side of the grate 7 forms the aforementioned water inlet 11 between the inner wall of the upper end of the drain shell 1. The upper surface of the grate 7 is flush with the top surface of the drain shell 1. In this embodiment, the drain shell 1 is an integral structure, divided into three sections from top to bottom, with the width gradually decreasing. Two steps are formed on the inner side of the drain shell 1. The protrusion 9 is set on the upper side of the upper step, and the filter screen 8 is set on the upper side of the lower step and abuts against the upper side of the step. The connecting part 12 is the third section located at the bottom of the drain shell 1.

[0023] Mounting base 2 is an integral structure, including a cylindrical base 24, an annular connecting seat 25 located above the base 24, and two elongated support arms 26. The axes of the base 24 and the connecting seat 25 are both vertical. The two support arms 26 are respectively located on opposite sides of the base 24 and are bent into an L-shape. One end of the two support arms 26 is integrated with the side of the base 24, and the other end of the two support arms 26 is integrated with the bottom of the connecting seat 25. The opposite sides of the two support arms 26 are both convex arc surfaces. The sealing core 3 is umbrella-shaped, including an arc-shaped umbrella surface and a rod-shaped umbrella shaft. The umbrella shaft passes through the base 24 from top to bottom, and the umbrella surface is located at the upper end of the umbrella shaft. In this embodiment, the upper part of the base 24 is a cylindrical boss 22, and an annular groove 23 is formed on the inner side of the upper end of the boss 22. The reset member 5 is a spring, with one end of the spring abutting against the bottom surface of the groove 23 and the other end abutting against the lower side of the umbrella surface of the sealing core 3. The umbrella surface can move upward under the elastic force of the spring. Of course, if needed, the reset member 5 can be designed as a magnet, using the magnetic attraction or repulsion of the magnet to push the umbrella surface upward. This magnet solution is existing technology and will not be described in detail.

[0024] The lower inner side of the connecting part 12 has a protruding annular retaining edge 14. The upper end of the mounting base 2 is inserted into the connecting part 12, and the outer side of the upper end of the mounting base 2 has a protruding annular retaining edge 21. The upper end surface of retaining edge 14 and the lower end surface of retaining edge 21 are both flat, and the lower end surface of retaining edge 21 is in contact with the upper end surface of retaining edge 14, which can effectively prevent the mounting base 2 from detaching downward from the drain shell 1. The sealing gasket 4 is disposed on the upper side of the mounting base 2. The drain also includes an annular pressure cap 6. The axis of the pressure cap 6 is vertically opposite, and it is threaded into the connecting part 12 and located above the sealing gasket 4. When the pressure cap 6 is screwed in along the thread, it can press the sealing gasket 4 tightly against the top surface of the mounting base 2.

[0025] In this embodiment, the bottom of the inner side of the pressure cap 6 has a downwardly protruding annular protrusion 61, and the bottom of the outer side of the pressure cap 6 has a downwardly protruding annular protrusion 62. An upwardly recessed annular groove 63 is formed between the first protrusion 61 and the second protrusion 62. The top of the sealing gasket 4 has an upwardly protruding annular limiting part 42, which is inserted into the groove 63 and closely abuts against the bottom of the groove 63.

[0026] The inner and outer sides of the sealing gasket 4 extend out of the groove 63 and are respectively opposite to the positions of protrusion 61 and protrusion 62. The outer side of the sealing gasket 4 has an annular sealing portion 41, the bottom surface of which abuts against the top surface of the mounting base 2. The inner wall of the connecting portion 12, directly opposite the sealing portion 41, is a smooth cylindrical surface. When the lower end of protrusion 62 is pressed tightly against the top surface of the sealing portion 41, the sealing portion 41 can deform outwards and tightly abut against the inner wall of the connecting portion 12 to achieve a seal. In this embodiment, the bottom surface of the sealing gasket 4 is a plane.

[0027] The pressure cap 6 has several through holes 64 extending vertically through it. These through holes 64 are evenly distributed around the axis of the pressure cap 6, and the lower ends of all the through holes 64 are located at the bottom of the slot 63. The limiting part 42 of the sealing gasket 4 blocks all the through holes 64. The bottom of the inner side of the sealing gasket 4 has a conical sealing surface 43 that abuts against the sealing core 3.

[0028] When the local drain is in its default state, the sealing core 3 moves upward and close to the sealing gasket 4 under the action of the reset element 5, sealing the drain and blocking the flow between the inlet 11 and the outlet 13, thus preventing backflow and odor. When the water pressure at the inlet 11 at the top of the drain is high, the gravity of the water can push the sealing core 3 downward and away from the sealing gasket 4, overcoming the force of the reset element 5, allowing the inlet 11 and the outlet 13 to connect and the water to drain downward.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A floor drain, comprising a cylindrical drain shell (1), a mounting base (2) disposed at the lower end of the drain shell (1), a sealing core (3) vertically inserted on the mounting base (2), an annular sealing gasket (4), and a resetting member (5), wherein the upper end of the drain shell (1) is a water inlet (11), and the lower end of the drain shell (1) has a vertically disposed cylindrical connecting part (12), the lower end of which is a drain outlet (13), and the sealing core (3) can move upward under the action of the resetting member (5) and abut against the sealing gasket (4) to block the water inlet (11) and the drain outlet (13), characterized in that, The lower end of the connecting part (12) has a protruding annular retaining edge one (14) on the inner side. The upper end of the mounting base (2) is inserted into the connecting part (12) and the upper end of the mounting base (2) has a protruding annular retaining edge two (21) on the outer side. The lower end face of the retaining edge two (21) abuts against the upper end face of the retaining edge one (14). The sealing gasket (4) is disposed on the upper side of the mounting base (2). The floor drain also includes an annular pressure cap (6). The pressure cap (6) is threaded into the connecting part (12) and located above the sealing gasket (4). When the pressure cap (6) is screwed in along the thread, it can press the sealing gasket (4) tightly against the top surface of the mounting base (2).

2. A floor drain according to claim 1, characterized in that, The outer side of the sealing gasket (4) has a protruding annular sealing part (41). The bottom surface of the sealing part (41) is in contact with the top surface of the mounting base (2). The inner wall of the connecting part (12) is a smooth cylindrical surface opposite to the sealing part (41). The sealing part (41) can deform outward under the action of the pressure cap (6) and tightly abut against the inner wall of the connecting part (12).

3. A floor drain according to claim 2, characterized in that, The bottom of the inner side of the pressure cap (6) has a downward protruding annular protrusion 1 (61), and the bottom of the outer side of the pressure cap (6) has a downward protruding annular protrusion 2 (62). An upward recessed annular groove (63) is formed between the protrusion 1 (61) and the protrusion 2 (62). The top of the sealing gasket (4) has an upward protruding annular limiting part (42). The limiting part (42) is inserted into the groove (63) and closely abuts against the bottom of the groove (63). The lower end of the protrusion 2 (62) is pressed tightly against the top surface of the sealing part (41).

4. A floor drain according to claim 3, characterized in that, The pressure cap (6) has several through holes (64) extending vertically. The lower ends of the several through holes (64) are all located at the bottom of the slot (63), and the limiting part (42) blocks all the through holes (64).

5. A floor drain according to any one of claims 1 to 4, characterized in that, The bottom of the inner side of the sealing gasket (4) has a conical sealing surface (43) that can abut against the sealing core (3).

6. A floor drain according to any one of claims 1 to 4, characterized in that, The upper end face of the first (14) and the lower end face of the second (21) are both planes and are in contact with each other.

7. A floor drain according to any one of claims 1 to 4, characterized in that, The mounting base (2) has a protruding cylindrical boss (22), the sealing core (3) passes through the boss (22), and the upper inner side of the boss (22) has an annular groove (23). The reset member (5) is a spring, one end of the spring abuts against the bottom surface of the groove (23), and the other end of the spring abuts against the sealing core (3).

8. A floor drain according to any one of claims 1 to 4, characterized in that, The mounting base (2) is an integral structure, including a base (24), a ring-shaped connecting seat (25) located above the base (24), and two long support arms (26). The two support arms (26) are respectively located on opposite sides of the base (24). One end of the two support arms (26) is integrated with the side of the base (24), and the other end of the two support arms (26) is integrated with the bottom of the connecting seat (25). The opposing sides of the two support arms (26) are both convex arc surfaces.

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