A basin waste

Abstract

The application discloses a basin drain, and relates to the field of bathroom, which comprises a water pipe, the water pipe comprises a pipe body one and a pipe body two, the pipe body one is provided with a liquid discharge channel, the liquid discharge channel penetrates through the pipe body one, one end of the pipe body one is provided with a threaded sleeve, the threaded sleeve is sleeved on the outer wall of the pipe body one, the pipe body two is provided with a flow discharge groove, the flow discharge groove is embedded with the pipe body one, the pipe body two is connected with a sewage pipe, the sewage pipe is connected with the liquid discharge channel; the outer wall of the threaded sleeve is provided with a mounting ring groove, the bottom of the mounting ring groove is provided with an elastic ring, the pipe body one is sleeved with a protective sleeve, the inner diameter of the protective sleeve is larger than the outer diameter of the threaded sleeve, the inner diameter of the protective sleeve is smaller than the outer diameter of the elastic ring, the protective sleeve is provided with a positioning hole, and the positioning hole is embedded with the elastic ring; through the technical scheme, the protective sleeve is arranged on the outer wall of the pipe body one, the protective sleeve is used for reducing the abrasion of the outer wall of the pipe body one, and then the protective sleeve is fixed through the positioning hole and the elastic ring, so that the fixing and taking out of the protective sleeve are more convenient.

Description

Technical Field

[0001] This application relates to the field of bathroom fixtures, and more specifically, to a basin drain. Background Technology

[0002] A drain device refers to a drainage system installed in places such as bathtubs and washbasins.

[0003] For example, the invention patent with patent publication number CN106677286A discloses a basin drain with overflow function. It mainly solves the problem that in the prior art, basins are usually made of ceramic in one piece. Due to processing errors, the flatness of the bottom of the basin at the location where the drain is installed is not high. The locking nut is locked from the bottom of the drain, and it is impossible to achieve a sealing effect through slight adjustment. Sewage can easily seep out through the external thread at the bottom of the drain. It includes a drain base and a plug. The drain base includes an upper base and a base. The plug is set at the water outlet at the top of the upper base. The upper base includes an upper base shell. The upper base shell is provided with a first water flow hole. The base includes a base shell. The base shell is provided with a second water flow hole. The upper base and the base are connected by screws. The side wall of the base is provided with an overflow inlet. The overflow inlet is connected to the overflow outlet of the basin through an overflow device.

[0004] In actual use, the basin drain is located under the basin, where miscellaneous items are often placed. As a result, these items frequently collide with the basin drain, which can easily cause wear and tear on the outer surface of the basin drain. This needs to be improved. Summary of the Invention

[0005] In order to improve the problem of easy wear on the outer surface of the washbasin drain, this application provides a washbasin drain.

[0006] This application provides a basin drain device, which adopts the following technical solution:

[0007] A basin drain includes a water pipe comprising a first pipe body and a second pipe body. The first pipe body has a drainage channel that extends through it along its length. A threaded sleeve is provided at one end of the first pipe body, fitted onto its outer wall and sliding along its length. The threaded sleeve connects to the lower end of the basin. The second pipe body has a drainage groove into which the first pipe body is inserted. The second pipe body is connected to a drain pipe that connects to the drainage channel. An installation ring groove is provided on the outer wall of the threaded sleeve, with an elastic ring at the bottom. The outer diameter of the elastic ring is larger than the outer diameter of the threaded sleeve. The first pipe body has a protective sleeve with an inner diameter larger than the outer diameter of the threaded sleeve but smaller than the outer diameter of the elastic ring. The protective sleeve has a positioning hole into which the elastic ring is inserted. The distance from the positioning hole to the end of the protective sleeve furthest from the second pipe body is the same as the distance from the elastic ring to the end of the protective sleeve furthest from the second pipe body.

[0008] The above technical solution involves setting a protective sleeve, which is fitted onto the outer wall of the pipe body. The protective sleeve is used to reduce wear on the outer wall of the pipe body. Furthermore, the protective sleeve is fixed using positioning holes and elastic rings, making it easier to fix and remove the protective sleeve.

[0009] Furthermore, the sewage pipe is located on the two side walls of the pipe body, and a gap is left between the end of the pipe body near the bottom of the drainage channel and the bottom of the drainage channel.

[0010] With the above technical solution, when the liquid is discharged, it passes through pipe body one and is discharged from the side wall of pipe body two, so that there is a certain amount of liquid in pipe body two, which reduces the possibility of odor in the sewage pipe entering the bathroom through pipe body two.

[0011] Furthermore, the drainage channel is equipped with a filter plate, the axial direction of which is consistent with the axial direction of the tube body, and the filter plate is equipped with a filter port.

[0012] With the above technical solution, in actual use, there is often a situation where foreign objects such as hair enter the drain, which can easily cause blockage of pipe body one and pipe body two. Therefore, a filter plate is installed to filter foreign objects and facilitate their removal later.

[0013] Furthermore, the drainage channel is provided with a protrusion and a limiting spring. The protrusion is located on the side of the filter plate closer to the bottom of the drainage channel, and the limiting spring is located at the end of the protrusion away from the bottom of the drainage channel. The elastic force of the limiting spring restricts the filter plate from moving towards the bottom of the drainage channel.

[0014] The above technical solution incorporates protrusions and limiting springs to buffer the filter plate. Liquid entering the drainage channel can easily impact the filter plate, which can cause damage over time. Therefore, the limiting springs provide buffering, reducing the damage caused by the impact.

[0015] Furthermore, the first tube body is provided with an installation cavity, which has an installation hole one and an installation hole two. The installation hole one is located on the inner wall of the drainage channel and extends through the inner wall of the drainage channel to the installation cavity. The installation hole two is located below the installation hole one. The installation cavity is provided with a sliding plate and a return spring. The end of the sliding plate near the drainage channel is provided with a sliding block, which protrudes from the inner wall of the drainage channel. The end of the sliding block away from the sliding plate is provided with an inclined surface one, which extends away from the second tube body along the direction near the sliding plate. Extending in the direction of the return spring, the elastic force of the return spring restricts the sliding plate from moving away from the drain channel; the drain channel is also provided with filter screen one and filter screen two, filter screen two is located on the side of filter screen one near tube body two, filter screen two is attached to filter screen one, and filter screen two is connected to the sliding plate; filter screen one has filter hole one, and filter screen two has filter hole two, and filter hole one and filter hole two are connected; when the filter plate moves down and abuts against the sliding block, the sliding block causes the sliding plate to move away from the drain channel, and filter hole one and filter hole two are misaligned.

[0016] With the above technical solution, when a certain amount of foreign matter accumulates on the filter plate, and with the impact of the liquid, the filter plate moves downward and abuts against the sliding block. When the sliding block causes the sliding plate to move away from the drain channel, filter hole one and filter hole two are misaligned. At this time, the liquid stops moving. This method reminds the user that a lot of foreign matter has accumulated on the filter plate and needs to be cleaned. In this way, the user is reminded to clean the filter plate in time, reducing the situation of excessive accumulation of foreign matter causing inconvenience in drainage and cleaning.

[0017] Furthermore, when the sliding plate moves away from the drain channel, filter hole one and filter hole two are misaligned, and filter hole one is still connected to filter hole two.

[0018] The above technical solution enables the filter plate to accumulate foreign objects when it is impacted by the liquid. As the filter plate moves downward and contacts the sliding block, the sliding block causes the filter plate to move away from the drain channel, thus slowing down the liquid discharge. This serves as a reminder to the user that a significant amount of foreign objects have accumulated on the filter plate and need to be cleaned. After a certain period of time, the liquid can still be discharged, reducing the need for the user to drain the liquid before cleaning the foreign objects and making the cleaning of foreign objects more convenient.

[0019] Furthermore, a limiting plate and a limiting protrusion are provided between filter screen one and filter screen two. The limiting plate has filter holes three times. The limiting protrusion is located on the side of the limiting plate closer to filter screen one. The limiting protrusion is provided with a return spring. The end of the return spring away from the limiting protrusion is connected to the limiting plate. The elastic force of the return spring limits the limiting plate from moving closer to the limiting protrusion. The sliding plate includes a sliding strip. The end of the sliding strip away from the drainage channel is provided with a sliding spring. The elastic force of the sliding spring limits the sliding strip from moving away from the drainage channel. The end of the sliding strip near the drainage channel is provided with a limiting block. The inner wall of the drainage channel is provided with a limiting hole, which extends through the drainage channel to... The mounting cavity has a limiting block that protrudes through a limiting hole and extends into the inner wall of the drain channel. The limiting block has a second inclined surface located at one end of the limiting block near the axis of the drain channel. The second inclined surface extends in a direction away from the pipe body towards the axis of the drain channel. When the return spring is in its normal state, the limiting plate abuts against the limiting block, causing the sliding strip to move away from the axis of the drain channel. At this time, the filter plate moves down and abuts against the sliding block, causing the sliding plate to move away from the drain channel. When the limiting plate moves towards the pipe body, the sliding spring is in its normal state. At this time, the filter plate moves down and abuts against the sliding block, and the sliding strip restricts the movement of the sliding plate.

[0020] Through the above technical solution, in actual use, due to the impact of the liquid, there is a possibility that the impact directly causes the filter plate to move, which in turn causes the sliding block to move and pushes the sliding plate to move. Furthermore, when the drain is emptying, the user may keep the faucet running continuously, causing the filter mesh holes one and two to remain misaligned. Such accidental triggering can easily affect the user's normal daily washing routine. Therefore, a limiting plate is installed. When the filter plate moves downwards and the limiting plate does not move significantly, the drainage effect of the filter plate is poor, indicating the presence of a certain amount of foreign matter on the filter plate. The movement of the filter plate causes the sliding block to move and pushes the sliding plate to move. The movement of filter mesh two causes the filter mesh holes one and two to become misaligned, liquid accumulates, and prompts the user to clean the foreign matter. When the filter plate moves downwards and the limiting plate moves significantly, the drainage effect of the filter plate is normal. Therefore, the downward movement of the filter plate will not cause the sliding plate to move.

[0021] Furthermore, the filter plate is provided with a crossbar, which is located on the side of the filter plate away from the tube body.

[0022] The above technical solution includes a crossbar, which allows users to easily remove the filter plate and facilitates subsequent cleaning of foreign objects.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] (1) By setting a protective sleeve, the protective sleeve is placed on the outer wall of the pipe body. The protective sleeve is used to reduce the wear of the outer wall of the pipe body. Secondly, the protective sleeve is fixed by positioning holes and elastic rings, making it more convenient to fix and remove the protective sleeve.

[0025] (2) By setting a limiting plate, when the filter plate moves down and the limiting plate does not move much, the filter plate has poor drainage effect. This proves that there is a certain amount of foreign matter on the filter plate. The movement of the filter plate causes the sliding block to move and pushes the sliding plate to move. The movement of the filter screen causes the filter hole one and filter hole two to be misaligned. Liquid accumulates and prompts the user to clean the foreign matter.

[0026] (3) By setting a crossbar, it is easy for subsequent users to remove the filter plate through the crossbar, which facilitates the subsequent cleaning of foreign objects. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall implementation of Example 1.

[0028] Figure 2 This is a cross-sectional schematic diagram of Example 1.

[0029] Figure 3 This is a schematic diagram of the overall implementation of Example 2.

[0030] Figure 4 for Figure 3 An enlarged diagram of A in the diagram.

[0031] Figure 5 for Figure 4 Enlarged diagram of B in the diagram.

[0032] Attached reference numerals: 1. Water pipe; 2. Pipe body one; 3. Pipe body two; 4. Sewage pipe; 5. Drainage channel; 6. Drainage trough; 7. Threaded sleeve; 8. Limiting protrusion ring; 9. Mounting ring groove; 10. Elastic ring; 11. Protective sleeve; 12. Positioning hole; 13. Filter plate; 14. Limiting plate; 15. Filter screen one; 16. Filter screen two; 17. Filter port; 18. Crossbar; 19. Protrusion; 20. Limiting spring; 21. Filter hole three; 22. Limiting protrusion; 23. Filter hole one; 24. Filter hole two; 25. Mounting cavity; 26. Mounting hole one; 27. Mounting hole two; 28. Limiting hole; 29. ​​Sliding plate; 30. Sliding block; 31. Return spring; 32. Inclined surface one; 33. Sliding strip; 34. Sliding hole; 35. Sliding ring protrusion; 36. Sliding spring; 37. Limiting block; 38. Inclined surface two; 39. Return spring. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] This application discloses a basin drain device.

[0035] Example 1:

[0036] See Figure 1 and Figure 2 A basin drain includes a water pipe 1, which comprises a pipe body 2, a pipe body 3, and a drain pipe 4. The pipe body 2 has a drainage channel 5 that extends through the pipe body 2 along its length. The pipe body 3 has a drainage groove 6 into which the pipe body 3 is embedded. The drain pipe 4 is located on the side wall of the pipe body 3. A gap is left between the end of the pipe body 2 near the bottom of the drainage groove 6 and the bottom of the drainage groove 6, and the drain pipe 4 connects to the drainage groove 6. When liquid flows through the drainage channel 5, it first flows through the drainage groove 6 and reaches its bottom, then passes through the drain pipe 4 from the drainage groove 6 and the side wall of the pipe body 2.

[0037] The tube body 2 is provided with a threaded sleeve 7, which is fitted onto the outer wall of the tube body 2. The threaded sleeve 7 slides along the length of the tube body 2 and is used to connect with the lower end of the dial. A limiting ring protrusion is provided at the end of the tube body 2 away from the tube body 3. The limiting ring protrusion is used to restrict the sliding of the threaded sleeve 7 to reduce the possibility of the threaded sleeve 7 coming off the tube body 2. The outer wall of the threaded sleeve 7 is provided with a mounting ring groove 9. An elastic ring 10 is provided at the bottom of the mounting ring groove 9. The outer diameter of the elastic ring 10 is larger than the outer diameter of the threaded sleeve 7.

[0038] The pipe body 12 is fitted with a protective sleeve 11. The inner diameter of the protective sleeve 11 is larger than the outer diameter of the threaded sleeve 7, and smaller than the outer diameter of the elastic ring 10. The protective sleeve 11 has a positioning hole 12 for the elastic ring 10 to be inserted. The distance from the positioning hole 12 to the end of the protective sleeve 11 away from the water pipe 12 is the same as the distance from the elastic ring 10 to the end of the protective sleeve 11 away from the water pipe 12. When the protective sleeve 11 is fixed, the elastic ring 10 undergoes elastic deformation and passes through the positioning hole 12.

[0039] Example 2

[0040] See Figure 3 and Figure 4 The difference from Embodiment 1 is that: the drain channel 5 is provided with a filter plate 13, a limiting plate 14, a first filter screen 15, and a second filter screen 16 in sequence along the direction close to the bottom of the drain tank 6. The axial direction of the filter plate 13 is consistent with the axial direction of the tube body 2. The filter plate 13 is provided with a filter port 17, which passes through the filter plate 13 and allows liquid to pass through. The filter plate 13 is provided with a crossbar 18, which is located on the side of the filter plate 13 away from the tube body 2 3. The crossbar 18 is provided to facilitate the user to remove the filter plate 13.

[0041] The drainage channel 5 is provided with a protrusion 19 and a limiting spring 20. Both the protrusion 19 and the limiting spring 20 are located between the filter plate 13 and the limiting plate 14. The limiting spring 20 is located at the end of the protrusion 19 away from the bottom of the drainage channel 6. The end of the limiting spring 20 away from the protrusion 19 abuts against the filter plate 13. The elastic force of the limiting spring 20 restricts the filter plate 13 from moving towards the bottom of the drainage channel 6.

[0042] The limiting plate 14 is provided with a filter hole 21, which passes through the limiting plate 14 and is parallel to the direction of the drainage channel 5. A limiting protrusion 2219 is also provided between the limiting plate 14 and the filter screen 15. A return spring 39 is provided at the end of the limiting protrusion 2219 near the limiting plate 14, and the end of the return spring 39 away from the limiting protrusion 2219 is connected to the limiting plate 14. The elastic force of the return spring 39 restricts the limiting plate 14 from moving towards the limiting protrusion 2219.

[0043] The second filter screen 16 is located on the side of the first filter screen 15 near the second tube body 3. The second filter screen 16 is attached to the first filter screen 15. The first filter screen 15 is provided with a first filter hole 23, and the second filter screen 16 is provided with a second filter hole 24. The first filter hole 23 and the second filter hole 24 are connected.

[0044] The tube body 2 is provided with an installation cavity 25. The inner wall of the drainage channel 5 is provided with an installation hole 26, a limiting hole 28, and an installation hole 27. The installation hole 26 is located between the protrusion 19 and the filter plate 13, and the installation hole 26 penetrates the inner wall of the drainage channel 5 to the installation cavity 25. The installation cavity 25 is also provided with a sliding plate 29, which slides on the cavity wall of the installation cavity 25. The sliding plate 29 slides in a direction close to or away from the axis of the drainage channel 5. The limiting plate 14 is provided with a sliding block 30 and a return spring 31. The sliding block 30 is located at the end of the sliding plate 29 close to the drainage channel 5. The sliding block 30 protrudes from the inner wall of the drainage channel 5. The end of the sliding block 30 away from the sliding plate 29 is provided with an inclined surface 32, which extends in a direction close to the sliding plate 29 and away from the tube body 23. The reset spring 31 is located at the end of the sliding plate 29 away from the sliding block 30. One end of the reset spring 31 is connected to the sliding plate 29, and the other end is connected to the wall of the mounting cavity 25. The elastic force of the reset spring 31 restricts the sliding plate 29 from moving away from the drain channel 5.

[0045] See Figure 4 and Figure 5The sliding plate 29 includes a sliding strip 33 and a sliding hole 34. The sliding hole 34 penetrates the sliding plate 29, and the penetration direction of the sliding hole 34 is the moving direction of the sliding plate 29. The wall of the sliding hole 34 is provided with a sliding ring protrusion 35, which is located on the side of the sliding hole 34 near the axis of the drainage channel 5. The sliding ring protrusion 35 is used to restrict the disengagement of the sliding strip 33. The sliding strip 33 is connected to a sliding spring 36, which is located at the end of the sliding strip 33 away from the drainage channel 5. One end of the sliding spring 36 is connected to the sliding strip 33, and the other end is connected to the wall of the mounting cavity 25. The elastic force of the sliding spring 36 restricts the sliding strip 33 from moving away from the drainage channel 5. The sliding strip 33 is connected to a limit block 37, which is located at the end of the sliding strip 33 near the drainage channel 5. The limiting hole 28 extends through the drainage channel 5 to the mounting cavity 25, and the limiting block 37 protrudes from the inner wall of the drainage channel 5 through the limiting hole 28. The limiting block 37 has an inclined surface 38, which is located at one end of the limiting block 37 near the axis of the drainage channel 5. The inclined surface 38 extends in a direction away from the tube body 3 towards the axis of the drainage channel 5. In actual use, the return spring 39 is in its normal state, and the end of the limiting block 37 near the inner wall of the drainage channel 5 is flush with the inner wall of the drainage channel 5.

[0046] The end of the sliding strip 33 closest to the axis of the drain channel 5 abuts against the end of the sliding convex ring furthest from the drain channel 5. At this time, the sliding strip 33 can move in a direction furthest from the axis of the drain channel 5. If the sliding plate 29 needs to move in a direction furthest from the axis of the drain channel 5, it needs to move the sliding strip 33 and the limiting block 37 together. When the return spring 39 is in its normal state, the limiting plate 14 abuts against the limiting block 37, causing the sliding strip 33 to move in a direction furthest from the axis of the drain channel 5, and the filter plate 13 moves downwards to abut against the sliding block 30, causing the sliding plate 29 to move in a direction furthest from the drain channel 5. In actual use, when the filter plate 13 is configured to move downwards on its own, it is difficult for the sliding plate 29 to move the limiting block 37, the limiting strip, and the filter screen 16 solely by its own downward force.

[0047] Mounting hole 27 is located below mounting hole 1 26. Mounting hole 27 penetrates the inner wall of the drainage channel 5 to the mounting cavity 25. Filter screen 2 16 passes through mounting hole 27 and is connected to sliding plate 29. When sliding plate 29 moves, filter screen 2 16 moves, causing filter screen 2 to be misaligned with filter hole 1 23, and slowing down the liquid discharge speed.

[0048] Working principle:

[0049] In practical use, when the return spring 39 is in its normal state, the limiting plate 14 causes the end of the limiting block 37 near the axis of the drain channel 5 to be flush with the inner wall of the drain channel 5. If there are no foreign objects above the filter plate 13, the impact of the liquid and gravity cause the filter plate 13 and the limiting plate 14 to move downwards together, separating the limiting plate 14 from the limiting block 37. The limiting block 37 protrudes from the inner wall of the drain channel 5. Therefore, the filter plate 13 cannot move the sliding plate 29 to move the limiting block 37, the sliding strip 33, and the filter screen 16 solely by its own downward force. However, when there are foreign objects blocking the filter port 17 above the filter plate 13, the impact of the liquid and gravity cause the filter plate 13 to move downwards. Because the liquid passes through the filter port 17 slowly and in small quantities, the limiting plate 14 does not move significantly. If the filter plate 13 moves downwards at this time, the sliding block 30 moves, causing the sliding plate 29 to move the filter screen 16.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A basin drain assembly, comprising a water pipe (1), characterized in that: The water pipe (1) includes a pipe body one (2) and a pipe body two (3). The pipe body one (2) is provided with a drain channel (5). The drain channel (5) passes through the pipe body one (2). The direction of the drain channel (5) is the length direction of the pipe body one (2). The pipe body one (2) is provided with a threaded sleeve (7). The threaded sleeve (7) is fitted on the outer wall of the pipe body one (2). The threaded sleeve (7) slides along the length direction of the pipe body one (2). The threaded sleeve (7) is used to connect with the lower end of the faceplate. The pipe body two (3) is provided with a drain groove (6). The drain groove (6) is for the pipe body one (2) to be embedded in. The pipe body two (3) is connected to a sewage pipe (4). The sewage pipe (4) is connected to the drain channel (5). The outer wall of the threaded sleeve (7) is provided with an installation ring groove (9), and the bottom of the installation ring groove (9) is provided with an elastic ring (10). The outer diameter of the elastic ring (10) is larger than the outer diameter of the threaded sleeve (7). The pipe body (2) is fitted with a protective sleeve (11). The inner diameter of the protective sleeve (11) is larger than the outer diameter of the threaded sleeve (7), and the inner diameter of the protective sleeve (11) is smaller than the outer diameter of the elastic ring (10). The protective sleeve (11) is provided with a positioning hole (12). The positioning hole (12) is for the elastic ring (10) to be embedded. The distance of the positioning hole (12) from the end of the protective sleeve (11) away from the water pipe (1) is the same as the distance of the elastic ring (10) from the end of the protective sleeve (11) away from the water pipe (1). The sewage pipe (4) is located on the side wall of the second pipe body (3), and the end of the first pipe body (2) near the bottom of the drain trough (6) has a gap with the bottom of the drain trough (6); The drain channel (5) is provided with a filter plate (13), the axial direction of the filter plate (13) is consistent with the axial direction of the tube body (2), and the filter plate (13) is provided with a filter port (17). The drain channel (5) is provided with a protrusion (19) and a limiting spring (20). The protrusion (19) is located on the side of the filter plate (13) close to the bottom of the drain channel (6). The limiting spring (20) is located at the end of the protrusion (19) away from the bottom of the drain channel (6). The elastic force of the limiting spring (20) restricts the filter plate (13) from moving towards the bottom of the drain channel (6). The tube body (2) is provided with an installation cavity (25), the installation cavity (25) is provided with an installation hole (26) and an installation hole (27), the installation hole (26) is located on the inner wall of the drainage channel (5), the installation hole (26) penetrates the inner wall of the drainage channel (5) to the installation cavity (25), and the installation hole (27) is located below the installation hole (26); The mounting cavity (25) is provided with a sliding plate (29) and a return spring (31). The sliding plate (29) is provided with a sliding block (30) at one end near the drain channel (5). The sliding block (30) protrudes from the inner wall of the drain channel (5). The sliding block (30) is provided with an inclined surface (32) at one end away from the sliding plate (29). The inclined surface (32) extends in the direction close to the sliding plate (29) and away from the tube body (3). The elastic force of the return spring (31) restricts the sliding plate (29) from moving away from the drain channel (5). The drainage channel (5) is also provided with filter screen one (15) and filter screen two (16). Filter screen two (16) is located on the side of filter screen one (15) close to tube body two (3). Filter screen two (16) fits against filter screen one (15) and is connected to sliding plate (29). Filter screen one (15) is provided with filter hole one (23) and filter screen two (16) is provided with filter hole two (24). Filter hole one (23) and filter hole two (24) are connected. When filter plate (13) moves down and touches sliding block (30), sliding block (30) causes sliding plate (29) to move away from drainage channel (5), filter hole one (23) and filter hole two (24) are misaligned.

2. A basin drain device according to claim 1, characterized in that: When the sliding plate (29) moves away from the drain channel (5), filter hole one (23) and filter hole two (24) are misaligned and filter hole one (23) is still connected to filter hole two (24).

3. A basin drain device according to claim 1, characterized in that: A limiting plate (14) and a limiting protrusion (22) are provided between the filter plate (13) and the filter screen (15). The limiting plate (14) is provided with filter holes (21). The limiting protrusion (22) is located on the side of the limiting plate (14) close to the filter screen (15). The limiting protrusion (22) is provided with a return spring (39). The end of the return spring (39) away from the limiting protrusion (22) is connected to the limiting plate (14). The elastic force of the return spring (39) limits the movement of the limiting plate (14) towards the limiting protrusion (22). The sliding plate (29) includes a sliding strip (33). The end of the sliding strip (33) away from the drain channel (5) is provided with a sliding spring (36). The elastic force of the sliding spring (36) limits the movement of the sliding strip (33) away from the drain channel (5). The sliding strip (33) is provided with a limiting block (37) at one end near the drain channel (5). The inner wall of the drain channel (5) is provided with a limiting hole (28). The limiting hole (28) passes through the drain channel (5) to the mounting cavity (25). The limiting block (37) protrudes from the inner wall of the drain channel (5) through the limiting hole (28). The limiting block (37) is provided with an inclined surface two (38). The inclined surface two (38) is located at one end of the limiting block (37) near the axis of the drain channel (5). The inclined surface two (38) extends in the direction away from the tube body two (3) towards the axis of the drain channel (5). When the return spring (39) is in its normal state, the limiting plate (14) abuts against the limiting block (37), causing the sliding strip (33) to move away from the axis of the drain channel (5). At this time, the filter plate (13) moves down to abut against the sliding block (30), and the sliding block (30) causes the sliding plate (29) to move away from the drain channel (5). When the limiting plate (14) moves towards the tube body (3), the sliding spring (36) is in its normal state. At this time, the filter plate (13) moves down to abut against the sliding block (30), and the sliding strip (33) restricts the movement of the sliding plate (29).

4. A basin drain device according to claim 1, characterized in that: The filter plate (13) is provided with a crossbar (18), which is located on the side of the filter plate (13) away from the tube body (3).

Images