Water seal floor drain with spiral water channel
By designing a structure with spiral waterways in the water seal floor drain and forming a double check-in channel, the problem that the existing water seal floor drain cannot maintain airtight for a long time is solved, and a longer water seal effect and better protective effect are achieved.
Patent Information
- Application Number
- CN202420624905.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-28
AI Technical Summary
When the water level is low, the existing water seal floor drain can easily cause bacteria, reptiles and exhaust gas to invade the room, and it cannot maintain the water sealing effect for a long time.
A water seal floor drain with spiral water channels is designed. By setting up an upper spiral water channel, a lower spiral water channel, a water inlet tank, a water outlet cavity and a water outlet channel in the floor drain body, a double check-in channel is formed to store the water quantity and form a water seal air tightness.
It effectively reduces the evaporation loss of water volume, extends the time of water sealing and airtight state, and prevents bacteria, reptiles and waste gas from invading the room.
Smart Images

Figure CN222632472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water-sealed floor drains, in particular to a water-sealed floor drain with a spiral water channel. Background Art
[0002] Existing water-sealed floor drains, such as a new type of water-sealed floor drain disclosed in Chinese patent publication CN204225256U, include a circular cup body with an outer ring, a water outlet cavity cylinder body and a downpipe arranged in the circular cup body in upper and lower distributions, and a dome cover on the upper part of the circular cup body is provided with a plurality of water inlet holes along the circumferential direction, so that the water in the bottom of the cup is easily evaporated and lost. When the water level in the bottom of the cup is lower than the water seal line on the bottom surface of the water outlet cavity cylinder body, germs, reptiles and exhaust gas can easily invade into the room, and the water-sealed and airtight effect cannot be maintained for a relatively long time. Utility Model Content
[0003] The utility model aims to provide a water-sealed floor drain with a spiral water channel to solve the above-mentioned technical problems.
[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a water-sealed floor drain with a spiral water channel, comprising a floor drain body, in which an upper spiral water channel, a lower spiral water channel, a water inlet groove, a water outlet cavity, and a water outlet channel are arranged. The bottom end of the upper spiral water channel and the bottom end of the lower spiral water channel are connected to each other through the water inlet groove, and the top end of the lower spiral water channel and the top end of the water outlet channel are connected to each other through the water outlet cavity. The upper spiral water channel and the lower spiral water channel cooperate with each other to form a double check channel, which is used to store water in the water inlet groove to form a water-sealed airtightness.
[0005] Preferably, a tubular body is provided in the middle of the floor drain body, the upper spiral water channel, the lower spiral water channel, and the water outlet cavity are arranged between the floor drain body and the tubular body, a partition wall is provided in the middle of the tubular body, and the water outlet channel is located in the tubular body on the side of the partition wall close to the water outlet cavity.
[0006] Preferably, a blocking wall is provided at the top of the tubular body corresponding to the water outlet channel, and the blocking wall includes a fan-shaped inclined wall connected to the upper spiral water channel and a fan-shaped flat wall connected to the top wall of the water outlet cavity.
[0007] Preferably, the water inlet groove comprises a first water inlet groove and a second water inlet groove which are interconnected, the first water inlet groove is located in the tubular body on the side of the partition wall away from the water outlet cavity, and the second water inlet groove is located between the floor drain body and the tubular body.
[0008] Preferably, the bottom wall of the first water inlet groove includes a first inclined wall and a second inclined wall, the second inclined wall is closer to the side of the second water inlet groove than the first inclined wall, the first inclined wall and the second inclined wall gradually incline downward toward the direction of the second water inlet groove, and the inclination of the first inclined wall is greater than the inclination of the second inclined wall.
[0009] Preferably, a vertical partition is provided in the middle of the floor drain body, the water inlet groove and the lower spiral water channel are located on one side of the vertical partition in the horizontal direction, the water outlet cavity and the water outlet channel are located on the other side of the vertical partition in the horizontal direction, and the upper spiral water channel is sealed on the upper side of the vertical partition.
[0010] Preferably, the upper spiral water channel includes a first upper spiral water channel and a second upper spiral water channel, the first upper spiral water channel corresponds to the top of the lower spiral water channel, and the second upper spiral water channel corresponds to the top of the water outlet cavity, and both the first upper spiral water channel and the second upper spiral water channel are arranged to spiral downward toward the water inlet trough.
[0011] Preferably, the top of the first upper spiral water channel is butted against the top of the second upper spiral water channel at the same height, and the bottom of the first upper spiral water channel is lower than the bottom of the second upper spiral water channel.
[0012] Preferably, a column is provided in the middle part of the floor drain body, the upper spiral water channel includes a first upper spiral water channel and a second upper spiral water channel arranged on opposite sides of the column, the lower spiral water channel includes a first lower spiral water channel and a second lower spiral water channel arranged on opposite sides of the column, the water inlet groove is located between the bottom end of the first lower spiral water channel and the bottom end of the second lower spiral water channel, the water outlet cavity is located below the lower spiral water channel, and the water outlet channel is located below the water outlet cavity.
[0013] Preferably, a drain outlet is provided at the bottom end of the water outlet channel, and a blocking member is elastically rotatably mounted on one side of the bottom of the water outlet channel for movably blocking the drain outlet of the water outlet channel.
[0014] The utility model has the following beneficial effects:
[0015] The utility model comprises a floor drain body, in which an upper spiral water channel, a lower spiral water channel, a water inlet trough, a water outlet cavity and a water outlet channel are arranged. The bottom end of the upper spiral water channel is communicated with the bottom end of the lower spiral water channel through the water inlet trough, the top end of the lower spiral water channel is communicated with the top end of the water outlet channel through the water outlet cavity, the upper spiral water channel and the lower spiral water channel cooperate with each other to form a double check channel for storing water in the water inlet trough to form a water seal and airtightness, the double check channel and the water inlet trough can store a large amount of water together, and because the water inlet trough is located at the lowest position of the double check channel, when the waste water at the water inlet trough evaporates, the water in the double check channel can quickly flow back to the water inlet trough, reducing the evaporation loss of water, so that the water-sealed floor drain with a spiral water channel of the utility model can maintain a water seal and airtightness effect for a relatively long time, effectively preventing pathogens, reptiles and waste gas from invading the room. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional diagram of embodiment 1 of the utility model;
[0017] Figure 2It is a side view of embodiment 1 of the utility model;
[0018] Figure 3 It is a top view of embodiment 1 of the utility model;
[0019] Figure 4 yes Figure 3 Sectional view at AA in the middle;
[0020] Figure 5 yes Figure 3 Sectional view at the middle BB;
[0021] Figure 6 It is a schematic structural diagram of a blocking member according to Embodiment 1 of the utility model;
[0022] Figure 7 It is a top view of Embodiment 2 of the present utility model;
[0023] Figure 8 It is a stereogram of Embodiment 2 of the present utility model;
[0024] Fig. 9 It is a water level diagram of the water-sealed floor drain in Example 2 of the utility model in a water-sealed and airtight state;
[0025] Fig.10 It is a longitudinal sectional view of Embodiment 2 of the present utility model;
[0026] Fig.11 is a transverse cross-sectional view of Embodiment 2 of the present utility model;
[0027] Fig.12 It is a top view of Embodiment 3 of the present utility model;
[0028] Fig.13 It is a three-dimensional diagram of embodiment 3 of the utility model;
[0029] Fig.14 It is a water level diagram of the water-sealed floor drain in Example 3 of the utility model in a water-sealed and airtight state;
[0030] Fig.15 It is a longitudinal sectional view of Embodiment 3 of the present utility model;
[0031] Fig.16 It is a transverse cross-sectional view of Example 3 of the utility model.
[0032] The accompanying drawings are marked with: 1 floor drain body, 2 tubular body, 3 dividing wall, 4 vertical partition, 5 upper spiral water channel, 51 first upper spiral water channel, 52 second upper spiral water channel, 6 lower spiral water channel, 61 first lower spiral water channel, 62 second lower spiral water channel, 7 water inlet groove, 71 first water inlet groove, 72 second water inlet groove, 8 water outlet cavity, 9 water outlet channel, 10 drain port, 11 water inlet, 12 fan-shaped inclined wall, 13 fan-shaped flat wall, 14 first inclined wall, 15 second inclined wall, 16 annular protrusion, 17 accommodating groove, 18 sealing piece, 181 counterweight block, 182 sealing valve plate, 19 column, 20 horizontal platform wall. DETAILED DESCRIPTION
[0033] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0034] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] Example 1.
[0037] See also Figure 1-6As shown, as an embodiment of the utility model, a water-sealed floor drain with a spiral water channel is provided, including a floor drain body 1, in which an upper spiral water channel 5, a lower spiral water channel 6, a water inlet groove 7, a water outlet cavity 8, and a water outlet channel 9 are arranged. The bottom end of the upper spiral water channel 5 and the bottom end of the lower spiral water channel 6 are interconnected through the water inlet groove 7, and the top end of the lower spiral water channel 6 and the top end of the water outlet channel 9 are interconnected through the water outlet cavity 8. A drain port 10 is arranged at the bottom end of the water outlet channel 9, and the upper spiral water channel 5 and the lower spiral water channel 6 cooperate with each other to form a double check channel, which is used to store water in the water inlet groove 7 to form a water-sealed airtightness.
[0038] The working process of the water-sealed floor drain with spiral water channel of the utility model is as follows: waste water from the bathtub, urinal and the ground flows downward into the water inlet groove 7 through the upper spiral water channel 5, then flows upward into the water outlet cavity 8 through the lower spiral water channel 6, and finally flows into the water outlet channel 9 through the water outlet cavity 8 and is discharged to the outside through the drain port 10 at the bottom end of the water outlet channel 9. After the drainage is completed, the water flow is retained in the water inlet groove 7 by the double check channel formed by the cooperation of the upper spiral water channel 5 and the lower spiral water channel 6 to form a water-sealed airtightness. The double check channel and the water inlet groove 7 can store a large amount of water together, and because the water inlet groove 7 is located at the lowest position of the double check channel, when the waste water at the water inlet groove 7 evaporates, the water in the double check channel can quickly flow back to the water inlet groove 7, reducing the evaporation loss of water, so that the water-sealed floor drain with spiral water channel of the utility model can maintain a relatively long water-sealed airtightness effect, effectively preventing germs, reptiles and waste gas from invading the room.
[0039] In this embodiment, a tubular body 2 is provided in the middle of the floor drain body 1, and an upper spiral water channel 5, a lower spiral water channel 6, and a water outlet cavity 8 are arranged between the floor drain body 1 and the tubular body 2. A partition wall 3 is provided in the middle of the tubular body 2, and the water outlet channel 9 is located in the tubular body 2 on the side of the partition wall 3 close to the water outlet cavity 8, that is, the water inlet 11 of the water outlet channel 9 is located on the tubular body 2 on the top side of the water outlet channel 9. This arrangement makes the overall path of the double check channel formed by the upper spiral water channel 5 and the lower spiral water channel 6 cooperate with each other longer, so that more water can be stored, further extending the time for the water inlet groove 7 to be filled with water, thereby extending the time of the water seal airtight state.
[0040] In this embodiment, a blocking wall is provided at the top of the tubular body 2 corresponding to the water outlet channel 9, and the blocking wall includes a fan-shaped inclined wall 12 connected to the upper spiral water channel 5 and a fan-shaped flat wall 13 connected to the top wall of the water outlet chamber 8. The wastewater is diverted to the upper spiral water channel 5 through the top surface of the blocking wall, and finally spirally flows downward into the water inlet trough 7, making the wastewater diversion process faster and smoother.
[0041] In this embodiment, the water inlet groove 7 includes a first water inlet groove 71 and a second water inlet groove 72 which are interconnected. The first water inlet groove 71 is located in the tubular body 2 on the side of the partition wall 3 away from the water outlet chamber 8, and the second water inlet groove 72 is located between the floor drain body 1 and the tubular body 2. This arrangement can increase the accommodating space of the water inlet groove 7, thereby accommodating more water and further prolonging the time of the water-sealed airtight state.
[0042] In this embodiment, the bottom wall of the first water inlet groove 71 includes a first inclined wall 14 and a second inclined wall 15. The second inclined wall 15 is closer to the side of the second water inlet groove 72 than the first inclined wall 14. The first inclined wall 14 and the second inclined wall 15 gradually tilt downward in the direction of the second water inlet groove 72. The inclination of the first inclined wall 14 is greater than the inclination of the second inclined wall 15. The second inclined wall 15 and the first inclined wall 14 are both fan-shaped. This arrangement enables the water in the first water inlet groove 71 to be quickly diverted into the second water inlet groove 72 through the first inclined wall 14 and the second inclined wall 15, and then quickly discharged to the outside through the lower spiral water channel 6 and the water outlet channel 9, thereby improving the discharge efficiency of wastewater. Moreover, since the side notch between the bottom end of the upper spiral water channel 5 and the bottom end of the lower spiral water channel 6 corresponding to the second water inlet groove 72 is the key to forming a water seal and airtightness, this arrangement can mainly divert the water flow of the first water inlet groove 71 to the second water inlet groove 72 to block the side notch, thereby ensuring a stable and effective water seal and airtightness.
[0043] In this embodiment, the floor drain body 1 is cylindrical, and an annular protrusion 16 is provided on the outer periphery of the top of the floor drain body 1 for stably installing the water-sealed floor drain in the floor drain hole.
[0044] In this embodiment, a receiving groove 17 is provided on one side of the bottom of the water outlet channel 9, and a sealing member 18 is elastically rotatably installed at the receiving groove 17 for movably sealing the drain outlet 10 of the water outlet channel 9. The sealing member 18 includes a counterweight block 181 and a sealing valve plate 182 that are connected to each other. The counterweight block 181 is elastically rotatably installed in the receiving groove 17, thereby providing a good protective effect for the sealing member 18. The sealing valve plate 182 is used to movably seal the drain outlet 10 of the water outlet channel 9. Only when the water outlet channel 9 discharges wastewater will the sealing member 18 open under the impact of the wastewater. When the wastewater in the water outlet channel 9 is discharged, the sealing member 18 elastically rotates and resets to seal the drain outlet 10 of the water outlet channel 9, thereby preventing the exhaust gas from overflowing upward into the room through the water outlet channel 9, the water outlet cavity 8, the lower spiral waterway 6, and the water inlet groove 7 in sequence, thereby further ensuring air tightness.
[0045] In this embodiment, the drain outlet 10 of the water outlet channel 9 is an inclined drain outlet, which is inclined in the direction of gradually tilting downward toward the side away from the blocking member 18, and the blocking valve plate 182 is a semi-elliptical structure corresponding to the inclined drain outlet. This setting makes the rotation angle stroke of the blocking valve plate 182 smaller, so that the blocking valve plate 182 can quickly block the drain outlet 10, and the blocking stability is higher.
[0046] Embodiment 2: For the sake of brevity, this embodiment mainly describes the differences from Embodiment 1.
[0047] See also Figure 7-11 As shown, as an embodiment of the utility model, a water-sealed floor drain with a spiral water channel is provided, a vertical partition 4 is arranged in the middle of the floor drain body 1, a water inlet groove 7 and a lower spiral water channel 6 are located on one side of the vertical partition 4 in the horizontal direction, a water outlet cavity 8 and a water outlet channel 9 are located on the other side of the vertical partition 4 in the horizontal direction, an upper spiral water channel 5 is blocked and arranged on the upper side of the vertical partition 4, the upper spiral water channel 5 includes a first upper spiral water channel 51 and a second upper spiral water channel 52, the first upper spiral water channel 51 corresponds to the upper part of the lower spiral water channel 6 and is arranged parallel to each other, the second upper spiral water channel 52 corresponds to the upper part of the water outlet cavity 8, the first upper spiral water channel 51 and the second upper spiral water channel 52 are both arranged spirally downward in the direction of the water inlet groove 7, and the top of the first upper spiral water channel 51 It is connected to the top of the second upper spiral water channel 52 at the same height, and the height of the bottom end of the first upper spiral water channel 51 is lower than the height of the bottom end of the second upper spiral water channel 52. The first upper spiral water channel 51 and the lower spiral water channel 6 are arranged parallel to each other. The floor drain body 1 is cylindrical, the water inlet groove 7 is fan-shaped, and the floor drain body 1 and the water inlet groove 7 are arranged concentrically. Compared with the technical scheme of the above-mentioned embodiment 1, the width of the water flow cross-section of the upper spiral water channel 5 and the lower spiral water channel 6 is larger, the accommodating space of the water outlet cavity 8 is larger, the wastewater discharge efficiency is faster, and it is not easy to cause blockage, and the accommodating space of the water inlet groove 7 is small, only a small amount of water is needed to achieve the effect of water sealing and airtightness, and the speed of achieving water sealing and airtightness is faster, and the overall structure is relatively simple and easy to process.
[0048] Example 3: For the sake of brevity, this example mainly describes the differences from Example 1.
[0049] See also Figure 12-16As shown, as an embodiment of the utility model, a water-sealed floor drain with a spiral water channel is provided, a column 19 is arranged in the middle of the floor drain body 1, the upper spiral water channel 5 includes a first upper spiral water channel 51 and a second upper spiral water channel 52 arranged on opposite sides of the column 19, the lower spiral water channel 6 includes a first lower spiral water channel 61 and a second lower spiral water channel 62 arranged on opposite sides of the column 19, the water inlet groove 7 is located between the bottom end of the first lower spiral water channel 61 and the bottom end of the second lower spiral water channel 62, the water outlet cavity 8 is located below the lower spiral water channel 6, and the water outlet channel 9 is located below the water outlet cavity 8. Compared with the technical scheme of the above-mentioned embodiment 1, this technical scheme further increases the width of the water flow cross-section of the upper spiral water channel 5 and the lower spiral water channel 6, and the total slope is higher, the diversion effect is better, and the wastewater discharge efficiency of the upper spiral water channel 5 and the lower spiral water channel 6 is further improved. The accommodating space of the water outlet cavity 8 is relatively larger, and the drainage is smoother, thereby effectively reducing the risk of blockage during drainage, and the overall structure is relatively compact and easy to process.
[0050] In this embodiment, the water outlet between the lower spiral water channel 6 and the water outlet chamber 8 is located between the top of the first lower spiral water channel 61 and the top of the second lower spiral water channel 62, and the upper spiral water channel 5 is parallel to the lower spiral water channel 6, and a horizontal platform wall 20 is connected between the top of the first upper spiral water channel 51 and the top of the second upper spiral water channel 52, and the water outlet is located directly below the horizontal platform wall 20. The setting of the horizontal platform wall 20 can reduce the extension height of the top of the first upper spiral water channel 51 and the second upper spiral water channel 52, so that the water flow at the first upper spiral water channel 51 and the second upper spiral water channel 52 can flow smoothly into the water inlet trough 7. Since the first lower spiral water channel 61 and the second lower spiral water channel 62 are symmetrically arranged, the water in the water inlet trough 7 flows through the first lower spiral water channel 61 and the second lower spiral water channel 62 to the water outlet chamber 8 at the same distance and height, ensuring the balance and stability of the drainage process.
[0051] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes made to the present invention in form and detail, without departing from the spirit and scope of the present invention as defined in the appended claims, shall fall within the scope of protection of the present invention.
Claims
1. A water-sealed floor drain with a spiral water channel, characterized in that: The floor drain body includes an upper spiral water channel, a lower spiral water channel, a water inlet groove, a water outlet cavity, and a water outlet channel. The bottom end of the upper spiral water channel and the bottom end of the lower spiral water channel are connected to each other through the water inlet groove, and the top end of the lower spiral water channel and the top end of the water outlet channel are connected to each other through the water outlet cavity. The upper spiral water channel and the lower spiral water channel cooperate with each other to form a double check channel, which is used to store water in the water inlet groove to form a water seal and airtightness.
2. The water-sealed floor drain with a spiral water channel according to claim 1, characterized in that: A tubular body is arranged in the middle of the floor drain body, an upper spiral water channel, a lower spiral water channel and a water outlet cavity are arranged between the floor drain body and the tubular body, a partition wall is arranged in the middle of the tubular body, and the water outlet channel is located in the tubular body on the side of the partition wall close to the water outlet cavity.
3. The water-sealed floor drain with a spiral water channel according to claim 2, characterized in that: A blocking wall is arranged at the top of the tubular body corresponding to the water outlet channel, and the blocking wall comprises a fan-shaped inclined wall connected to the upper spiral water channel and a fan-shaped flat wall connected to the top wall of the water outlet cavity.
4. The water-sealed floor drain with a spiral water channel according to claim 2, characterized in that: The water inlet groove comprises a first water inlet groove and a second water inlet groove which are interconnected. The first water inlet groove is located in the tubular body on the side of the partition wall away from the water outlet cavity, and the second water inlet groove is located between the floor drain body and the tubular body.
5. The water-sealed floor drain with a spiral water channel according to claim 4, characterized in that: The bottom wall of the first water inlet groove includes a first inclined wall and a second inclined wall. The second inclined wall is closer to the second water inlet groove than the first inclined wall. The first inclined wall and the second inclined wall gradually incline downward toward the second water inlet groove, and the inclination of the first inclined wall is greater than the inclination of the second inclined wall.
6. The water-sealed floor drain with a spiral water channel according to claim 1, characterized in that: A vertical partition is arranged in the middle of the floor drain body, the water inlet groove and the lower spiral water channel are located on one side of the vertical partition in the horizontal direction, the water outlet cavity and the water outlet channel are located on the other side of the vertical partition in the horizontal direction, and the upper spiral water channel plug is arranged on the upper side of the vertical partition.
7. The water-sealed floor drain with a spiral water channel according to claim 1 or 6, characterized in that: The upper spiral water channel includes a first upper spiral water channel and a second upper spiral water channel. The first upper spiral water channel corresponds to the upper part of the lower spiral water channel, and the second upper spiral water channel corresponds to the upper part of the water outlet cavity. Both the first upper spiral water channel and the second upper spiral water channel are arranged to spiral downward toward the water inlet trough.
8. The water-sealed floor drain with a spiral water channel according to claim 7, characterized in that: The top of the first upper spiral water channel is butted with the top of the second upper spiral water channel at the same height, and the bottom of the first upper spiral water channel is lower than the bottom of the second upper spiral water channel.
9. The water-sealed floor drain with a spiral water channel according to claim 1, characterized in that: A column is arranged in the middle of the floor drain body, the upper spiral water channel includes a first upper spiral water channel and a second upper spiral water channel arranged on opposite sides of the column, the lower spiral water channel includes a first lower spiral water channel and a second lower spiral water channel arranged on opposite sides of the column, the water inlet groove is located between the bottom end of the first lower spiral water channel and the bottom end of the second lower spiral water channel, the water outlet cavity is located below the lower spiral water channel, and the water outlet channel is located below the water outlet cavity.
10. The water-sealed floor drain with a spiral water channel according to claim 1, characterized in that: A drain outlet is arranged at the bottom end of the water outlet channel, and a blocking piece is elastically rotatably installed on one side of the bottom of the water outlet channel for movably blocking the drain outlet of the water outlet channel.
Citation Information
Patent Citations
Novel water seal floor drain
CN204225256U