Drain with overflow function

Abstract

This utility model discloses a drain with an overflow function, including an upper body, a lower body, a water plug assembly, an overflow pipe, a return pipe, and a connector. The lower body is fitted to the bottom of the upper body. The lower body has an overflow port and a return port, with the overflow port located above the return port. One end of the overflow pipe is connected to the overflow port, and one end of the return pipe is connected to the return port. One end of the water plug assembly is located outside the upper body, and the other end extends into the lower body. The other end of the overflow pipe is connected to the other end of the return pipe through the connector, and the top of the connector is equipped with a waterproof and breathable membrane. When the water level in the sink is high and overflow is imminent, the water in the overflow pipe connected to the sink enters the return pipe through the connector and is discharged, preventing the sink from overflowing. Simultaneously, by providing an overflow port in the lower body, there is no need to create a corresponding overflow hole on the sink, improving the overall integrity of the sink and preventing dirt residue from remaining at the overflow hole, making cleaning easier.

Description

Technical Field

[0001] This utility model relates to a drain device, and more particularly to a drain device with an overflow function. Background Technology

[0002] A drain is a drainage device installed in places such as bathtubs and washbasins. Existing washbasins are generally equipped with overflow outlets to achieve an overflow function, but the overflow outlets disrupt the integrity of the washbasin surface, which not only affects the aesthetics but also makes it easy for dirt and grime to accumulate. Utility Model Content

[0003] The purpose of this utility model is to provide a drain with an overflow function that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, a drain with an overflow function is provided, including an upper body, a lower body, a water plug assembly, an overflow pipe, a return pipe, and a connector. The lower body is fitted to the bottom of the upper body. The lower body is provided with an overflow port and a return port. The overflow port is located above the return port. One end of the overflow pipe is connected to the overflow port, and one end of the return pipe is connected to the return port. One end of the water plug assembly is located outside the upper body, and the other end extends into the lower body. The other end of the overflow pipe is connected to the other end of the return pipe through the connector. The top of the connector is provided with a waterproof and breathable membrane.

[0005] The beneficial effects of this utility model are as follows: By providing an overflow pipe and a return pipe, when the water level in the washbasin is high and overflow is imminent, the water in the overflow pipe connected to the washbasin enters the return pipe through the connector and flows into the drain pipe for discharge, thus preventing the water in the washbasin from overflowing; at the same time, by providing an overflow port in the lower body, there is no need to provide a corresponding overflow hole on the washbasin, improving the overall integrity of the washbasin, preventing dirt residue from remaining at the overflow hole on the washbasin, and facilitating cleaning; by providing a waterproof and breathable membrane, when the drainer is draining, the waterproof and breathable membrane allows outside air to enter easily, which helps to balance the negative pressure formed during the drainage process, avoids siphoning, and helps to reduce the noise during drainage.

[0006] In some embodiments, the water stopper assembly includes a water stopper rod and a sealing ring. One end of the water stopper rod is located outside the upper body, and the other end extends into the lower body. The sealing ring is located inside the lower body and is fixedly fitted onto the water stopper rod. Thus, the water stopper rod facilitates the up-and-down movement of the sealing ring, making it convenient for the sink to store or drain water.

[0007] In some embodiments, the lower body includes a large end and a sealing part. The inner diameter of the large end is larger than the inner diameter of the sealing part, and the large end is located above the sealing part. The outer diameter of the sealing ring is the same as the inner diameter of the sealing part, and the sealing ring is fitted inside the sealing part. The overflow port is located at the large end, and the return port is located below the sealing part. Thus, when the sealing ring is engaged with the sealing part, water in the washbasin cannot be discharged downwards through the drain, facilitating water storage; when the sealing ring is pulled downwards to the large end, the sealing effect of the sealing ring is released, allowing water in the washbasin to drain through the lower body.

[0008] In some embodiments, the water plug assembly further includes a first fixing member and a second fixing member. The first fixing member is sleeved inside the upper body, and the second fixing member is sleeved inside the lower body. The first fixing member is located above the large end, and the second fixing member is located below the sealing part. The water plug rod is sleeved inside the first and second fixing members, and both the first and second fixing members are provided with through holes. Therefore, by providing the first and second fixing members, the vertical position of the sealing ring can be limited, preventing the sealing ring from being pulled out; at the same time, the first fixing member improves the smoothness of the vertical movement of the water plug rod.

[0009] In some embodiments, sealing rings are fitted onto the outer sides of both the first and second fixing members. Thus, by providing sealing rings, the contact portions between the two fixing members and their respective main bodies can be sealed.

[0010] In some embodiments, the drain with overflow function further includes a fastener, a first seal, and a second seal. A first external thread is provided on the outer side of the upper body. Both the first and second seals are fitted onto the outer side of the upper body. The first seal abuts against the lower part of the top of the upper body, and the second seal is located below the first seal. The fastener engages with the external thread of the upper body, and the second seal is pressed tightly against the fastener. Thus, the first and second seals ensure a tight seal at the mounting hole of the washbasin.

[0011] In some embodiments, the lower body has a second external thread on its bottom outer side and an internal thread on its top outer side, and the lower body engages with the upper body's first external thread through the internal thread. This facilitates the engagement of the lower and upper bodies, as well as the connection of the lower body to an external drainage pipe.

[0012] In some embodiments, the top of the water plug rod is provided with a cap, the outer diameter of which is larger than the inner diameter of the upper body. Thus, by raising and lowering the cap, the corresponding requirements for drainage and water storage are met. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the drain with overflow function of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the drain with overflow function of this utility model when it is in the draining state.

[0015] Figure 3 This is a cross-sectional structural diagram of the drain with overflow function of this utility model when it is in the water storage state.

[0016] Figure 4 This is a schematic diagram of the structure of the drain with overflow function of this utility model when connected to an external drain pipe;

[0017] Figure 5 This is a cross-sectional view of the drain assembly with overflow function of this utility model, showing the connection between the connector, overflow pipe, and return pipe. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] Reference Figures 1-4 A drain with overflow function includes an upper body 1, a lower body 2, a water plug assembly 3, an overflow pipe 4, a return pipe 5, and a connector 6. The lower body 2 is fitted to the bottom of the upper body 1. The lower body 2 is provided with an overflow port 21 and a return port 22. The overflow port 21 is located above the return port 22. One end of the overflow pipe 4 is connected to the overflow port 21, and one end of the return pipe 5 is connected to the return port 22. One end of the water plug assembly 3 is located outside the upper body 1, and the other end extends into the lower body 2. The other end of the overflow pipe 4 is connected to the other end of the return pipe 5 through the connector 6. The top of the connector 6 is provided with a waterproof and breathable membrane 7.

[0020] The lower body 2 is an integral injection-molded structure; the outer side of the upper body 1 is provided with a first external thread 11, the outer side of the bottom of the lower body 2 is provided with a second external thread 25, and the outer side of the top of the lower body 2 is provided with an internal thread. The lower body 2 mates with the first external thread 11 of the upper body 1 through the internal thread; the other end of the overflow pipe 4 and the other end of the return water pipe 5 are both fitted onto the connector 6. A waterproof and breathable membrane 7 is placed on the top of the connector 6, and a hollow top cover can be provided on the top of the connector 6 to facilitate pressing the waterproof and breathable membrane 7 onto the connector 6 (e.g., Figure 5 (As shown).

[0021] During installation, the upper body 1 of this utility model is inserted into the drain outlet at the bottom of the washbasin, with its top end above the drain outlet and its bottom end extending downwards below it. The lower body 2 is screwed onto the upper body 1 via threads. The bottom of the lower body 2 is connected to an external drain pipe via a second external thread 25, facilitating the drainage of water from the washbasin into the drain pipe. The overflow pipe 4 and return pipe 5 are threaded onto the overflow outlet 21 and return outlet 22, respectively. To improve the sealing of the pipes and threaded connections, Teflon tape can be wrapped around each connection point to enhance the sealing effect. The top end of the overflow pipe 4 is lower than the top of the washbasin, effectively preventing excessive water level in the basin from overflowing, thus preventing overflow.

[0022] The water plug assembly 3 includes a water plug rod 31 and a sealing ring 32. One end of the water plug rod 31 is located outside the upper body 1, and the other end extends into the lower body 2. The sealing ring 32 is located inside the lower body 2 and is fixedly sleeved on the water plug rod 31.

[0023] The lower body 2 includes a large end 23 and a sealing part 24. The inner diameter of the large end 23 is larger than the inner diameter of the sealing part 24. The large end 23 is located above the sealing part 24. The outer diameter of the sealing ring 32 is the same as the inner diameter of the sealing part 24. The sealing ring 32 is fitted inside the sealing part 24. The overflow port 21 is located at the large end 23, and the return port 22 is located below the sealing part 24.

[0024] In actual use, when the washbasin needs to store water, the water stopper rod 31 is pushed downwards, causing the sealing ring 32 to engage with the sealing part 24, thus achieving a seal and facilitating water storage in the washbasin. Since the overflow port 21 is located above the sealing ring 32, water can enter the overflow pipe 4, ensuring the water level in the overflow pipe 4 matches the water level in the washbasin. When the water level in the overflow pipe 4 gradually rises to its maximum, the water flows through the connector 6 to the return pipe 5, then through the return pipe 5 to the return port 22, and finally drains through the external drain pipe, thus preventing overflow from the washbasin.

[0025] When the washbasin needs to drain, pull the water stopper rod 31 upwards, causing the sealing ring 32 to move to the large end 23. Since the diameter of the large end 23 is larger than the diameter of the sealing ring 32, the sealing effect of the sealing ring 32 is released, allowing the water in the washbasin to be discharged directly to the external drain pipe through the upper body 1 and the lower body 2. During the drainage process, negative pressure can easily form in the drain pipe as water is drawn away. To balance the air pressure, a waterproof and breathable membrane 7 is provided at the top of the connector 6. Therefore, when the air pressure in the pipe is low, outside air can enter the connector 6 through the waterproof and breathable membrane 7. Since the connector 6 is always connected to the return pipe 5, outside air enters the return pipe 5 and connects to the drain pipe, thereby balancing the negative pressure in the drain pipe, quickly resolving the negative pressure difference between the overflow pipe 4 and the return pipe 5, avoiding siphoning, and allowing the water in the washbasin to drain more smoothly.

[0026] The water plug assembly 3 also includes a first fixing member 33 and a second fixing member 34. The first fixing member 33 is fitted inside the upper body 1, and the second fixing member 34 is fitted inside the lower body 2. The first fixing member 33 is located above the large end 23, and the second fixing member 34 is located below the sealing part 24. The water plug rod 31 is fitted inside the first fixing member 33 and the second fixing member 34. Both the first fixing member 33 and the second fixing member 34 are provided with through holes. By fixing the first fixing member 33 and the second fixing member 34 at different positions on the water plug rod 31, the strength of the water plug rod 31 can be increased to a certain extent through the two fixing members, preventing the water plug rod 31 from shaking when it is pulled out. Since the first fixing member 33, the second fixing member 34 and the sealing ring 32 are all fixed on the water plug rod 31, the water plug rod 31, together with the first fixing member 33, the second fixing member 34 and the sealing ring 32, can be pulled out from the upper body 1 as a whole, which facilitates the cleaning of the entire water plug assembly 3 and reduces the growth of bacteria.

[0027] Sealing rings 8 are fitted on the outer sides of both the first fixing member 33 and the second fixing member 34. The sealing rings 8 prevent water from leaking between the first fixing member 33 and the upper body 1, and prevent water from leaking between the second fixing member 34 and the lower body 2, thus providing a good seal at the corresponding locations.

[0028] The drain with overflow function also includes fastener 9, first seal 10 and second seal 20. The first seal 10 and the second seal 20 are both sleeved on the outside of the upper body 1. The first seal 10 abuts against the lower part of the top of the upper body 1. The second seal 20 is located below the first seal 10. The fastener 9 is threaded with the outside of the upper body 1. The second seal 20 is pressed on the fastener 9.

[0029] During actual installation, the first sealing element 10 and the second sealing element 20 are respectively clamped at the upper and lower ends of the sink drain. The first sealing element 10 is pressed onto the sink by the upper body 1; the second sealing element 20 is pressed onto the bottom of the sink by turning the fastener 9 upwards. Thus, the first sealing element 10 and the second sealing element 20 prevent water in the sink from leaking out through the gap between the sink and the upper body 1.

[0030] The top of the water stopper rod 31 is formed with a top cover 311, the outer diameter of which is larger than the inner diameter of the upper body 1. Thus, when the washbasin is filled with water, an external force can be applied to the top cover 311, pushing it down so that it is pressed tightly against the top of the upper body 2, facilitating the application of external force to the water stopper rod; conversely, when the washbasin needs to drain water, an external force pulls the top cover 311 upward, allowing water to enter the upper and lower bodies and then drain out, making it convenient to use.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A drain with overflow function, characterized in that, The device includes an upper body (1), a lower body (2), a water plug assembly (3), an overflow pipe (4), a return water pipe (5), and a connector (6). The lower body (2) is fitted to the bottom of the upper body (1). The lower body (2) is provided with an overflow port (21) and a return port (22). The overflow port (21) is located above the return port (22). One end of the overflow pipe (4) is connected to the overflow port (21). One end of the return water pipe (5) is connected to the return port (22). One end of the water plug assembly (3) is located outside the upper body (1), and the other end extends into the lower body (2). The other end of the overflow pipe (4) is connected to the other end of the return water pipe (5) through the connector (6). The top of the connector (6) is provided with a waterproof and breathable membrane (7).

2. The drain with overflow function according to claim 1, characterized in that, The water plug assembly (3) includes a water plug rod (31) and a sealing ring (32). One end of the water plug rod (31) is located outside the upper body (1), and the other end extends into the lower body (2). The sealing ring (32) is located inside the lower body (2) and is fixedly sleeved on the water plug rod (31).

3. The drain with overflow function according to claim 2, characterized in that, The lower body (2) includes a large end (23) and a sealing part (24). The inner diameter of the large end (23) is larger than the inner diameter of the sealing part (24). The large end (23) is located above the sealing part (24). The outer diameter of the sealing ring (32) is the same as the inner diameter of the sealing part (24). The sealing ring (32) is fitted inside the sealing part (24). The overflow port (21) is located at the large end (23). The return port (22) is located below the sealing part (24).

4. The drain with overflow function according to claim 2 or 3, characterized in that, The water plug assembly (3) further includes a first fixing member (33) and a second fixing member (34). The first fixing member (33) is sleeved in the upper body (1), and the second fixing member (34) is sleeved in the lower body (2). The first fixing member (33) is located above the large end (23), and the second fixing member (34) is located below the sealing part (24). The water plug rod (31) is sleeved in the first fixing member (33) and the second fixing member (34). Both the first fixing member (33) and the second fixing member (34) are provided with through holes.

5. The drain with overflow function according to claim 4, characterized in that, A sealing ring (8) is fitted on the outer side of both the first fixing member (33) and the second fixing member (34).

6. The drain with overflow function according to any one of claims 1 to 3, characterized in that, It also includes fasteners (9), a first seal (10) and a second seal (20). The outer side of the upper body (1) is provided with a first external thread (11). The first seal (10) and the second seal (20) are both sleeved on the outer side of the upper body (1). The first seal (10) abuts against the lower part of the top of the upper body (1). The second seal (20) is located below the first seal (10). The fasteners (9) are threaded with the outer side of the upper body (1). The second seal (20) is pressed on the fasteners (9).

7. The drain with overflow function according to claim 6, characterized in that, The lower body (2) has a second external thread (25) on the bottom outer side and an internal thread on the top outer side. The lower body (2) is engaged with the first external thread (11) of the upper body (1) through the internal thread.

8. The drain with overflow function according to claim 2, characterized in that, The top of the water plug rod (31) is provided with a top cover (311), and the outer diameter of the top cover (311) is larger than the inner diameter of the upper body (1).

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