Water seal anti-reflux type floor drain
By designing a funnel-shaped water seal ring cover and water sealing cylinder in the floor drain combined with an anti-spill floating plate and a transfer plate assembly, the problem of sewage countercurrent backflow back into the room is solved, achieving more efficient drainage and better sanitation conditions.
Patent Information
- Application Number
- CN202411629504.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-01-03
AI Technical Summary
When the existing floor drain reverses the sewage in the underground drainage pipe, it is difficult to effectively prevent the sewage from flowing back into the room, resulting in sewage accumulation and odor generation.
A water seal anti-counterflow type floor drain is designed, using a funnel-shaped water seal ring cover and an open top water seal cylinder. Combined with anti-overflow floating plate and rotary plate components, the anti-overflow floating plate floats up in sewage to seal the water seal ring cover. At the bottom, the rotary plate assembly realizes sewage drainage through float cylinders and lifting floating plates, enhancing sealing and drainage efficiency.
It effectively reduces the possibility of sewage reversal into the room, prevents sewage accumulation and odor generation, and improves the drainage efficiency and sanitary conditions of floor drains.
Smart Images
Figure CN119243852A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of floor drain drainage, and in particular to a water-sealed anti-backflow floor drain. Background Art
[0002] The floor drain is an important part of the building drainage system. It is usually installed on the floor of the room to drain the water on the floor. The design of the floor drain needs to meet the requirements of fast drainage, odor prevention, insect prevention, and easy cleaning. Common types of floor drains include water-sealed floor drains and self-sealed floor drains. Different types of floor drains are suitable for different usage scenarios.
[0003] The related technology discloses a large-diameter floor drain, which includes a cylindrical connecting pipe buried in the ground, the bottom of which is open and a connecting ring seat for connecting with an underground drainage pipe is arranged at the opening, a funnel-shaped water seal ring cover is set on the top of the connecting pipe, and a grate is also set above the water seal ring cover.
[0004] The above-mentioned water seal ring cover is always connected with the underground drainage pipe through the opening at the bottom of the connecting pipe. However, when a large amount of water enters other water inlets of the underground drainage pipe and cannot be discharged in time in a short time, the sewage will flow back into the room from the water seal ring cover, which is obviously insufficient. Summary of the invention
[0005] In order to improve the problem that sewage in underground pipes may flow back into the room, the present application provides a water-sealed anti-backflow floor drain.
[0006] The present application provides a water-sealed anti-backflow floor drain adopting the following technical solution: A water-sealed anti-backflow floor drain comprises a tubular connecting pipe buried in the ground, the bottom of the connecting pipe is open and a connecting ring seat for connecting with an underground drainage pipe is arranged at the opening, a funnel-shaped water-sealed ring cover with open upper and lower ends is arranged on the top of the connecting pipe, a grate is also arranged above the water-sealed ring cover, a water-sealed cylinder with an open top is suspended in the connecting pipe, the bottom of the water-sealed ring cover extends into the water-sealed cylinder, a spacing is left between the outer wall of the water-sealed ring cover and the inner wall of the water-sealed cylinder, as well as between the outer wall of the water-sealed cylinder and the inner wall of the connecting pipe, an overflow prevention floating plate is placed in the water-sealed cylinder at a position relative to the bottom of the water-sealed ring cover, and when the overflow prevention floating plate floats to be in close contact with the bottom of the water-sealed ring cover, the overflow prevention floating plate seals the open bottom of the water-sealed ring cover at any position.
[0007] By adopting the above technical solution, sewage flows into the water seal cylinder through the grate and the water seal ring cover, then overflows from the top of the water seal cylinder into the pipe, and then flows out from the opening at the bottom of the pipe. When sewage flows back into the water seal cylinder, the anti-overflow float plate floats up to the bottom of the water seal ring cover under the buoyancy of the sewage, thereby completely blocking the bottom end of the water seal ring cover, reducing the possibility of sewage flowing back into the room.
[0008] Optionally, an annular groove is formed on the top of the anti-overflow floating plate, and an elastic membrane for contacting the bottom end of the water supply seal cylinder is bonded between the inner and outer side walls of the annular groove.
[0009] By adopting the above technical solution, when the anti-overflow float plate floats up due to the buoyancy, the bottom end of the water seal ring cover is inserted into the ring groove to squeeze the elastic membrane, so that the elastic membrane and the bottom end of the water seal ring cover fit tightly, thereby improving the sealing between the anti-overflow float plate and the water seal ring cover, and further reducing the possibility of sewage backflowing into the room.
[0010] Optionally, a flip opening is opened at the bottom of the water seal cylinder, a flap is arranged in the flip opening through a rotating shaft, and a rotating plate assembly for driving the flap to rotate is also arranged in the connecting pipe.
[0011] By adopting the above technical solution, when the grate stops taking in water, the rotating plate assembly is driven to flip and rotate, thereby emptying the sewage remaining in the water seal cylinder, reducing the possibility of sewage deterioration, bacterial growth and odor emission.
[0012] Optionally, the rotating plate assembly includes a float arranged on the outer wall of the water seal cylinder, which is hollow inside and open at the top, and a plurality of water leakage holes are arranged on the float. A lifting float is placed in the float, and the rotating shaft extends into the float. The lifting float is located above the rotating shaft. A pull line is tied between the rotating shaft and the lifting float, and a counterweight ball is provided on the sliding sleeve of the pull line.
[0013] By adopting the above technical solution, when sewage overflows from the top of the water seal cylinder, it will flow into the buoy, so that the lifting float will gradually float up under the action of buoyancy. When the lifting float floats to a higher position, the pull line can pull the rotating shaft to rotate, so that the connection between the pull line and the rotating shaft rotates to the highest point. When the sewage in the buoy gradually leaks out from the leaking hole, the lifting float gradually descends, the counterweight ball gradually falls and slides on the pull line until the counterweight ball descends to a lower position, and the gravity of the counterweight ball can pull the rotating shaft to reverse through the pull line. In this way, the reciprocating forward and reverse rotation of the flap is realized, and the sewage remaining in the water seal cylinder can be emptied during the flipping and rotation process.
[0014] Optionally, a guide groove is vertically opened on the side wall of the buoy, and the lifting floating plate extends into the guide groove and slidably cooperates with the guide groove.
[0015] By adopting the above technical solution, the guide groove guides the lifting and lowering movement of the lifting floating plate.
[0016] Optionally, a through hole is opened between the upper and lower surfaces of the lifting and pulling floating plate, a hanging pin is bonded to a position of the upper surface of the lifting and pulling floating plate relative to the through hole, and the top end of the pull line is tied to the hanging pin.
[0017] By adopting the above technical solution, during installation, the worker passes the top end of the pull wire through and ties it to the hanging needle, and then glues the hanging needle to the lifting float, thereby realizing the connection between the pull wire and the lifting float.
[0018] Optionally, two rotating plate assemblies are arranged outside the water seal cylinder.
[0019] By adopting the above technical solution, it is ensured that the rotating plate assembly can overcome the friction between the rotating shaft and the water seal cylinder to drive the flap to rotate.
[0020] Optionally, an elastic member is arranged on the inner wall of the buoy at a position above the rotating shaft, and a threading ring is arranged at the end of the elastic member, and the pull wire passes through the threading ring.
[0021] By adopting the above technical solution, when the floating plate is pulled down, the elastic member cooperates with the threading ring to apply lateral tension to the pull line, ensuring that the counterweight balls of the two rotating plate assemblies can fall from the same side of the rotating shaft, thereby reducing the possibility of failure of the reciprocating forward and reverse motion due to opposite forces at both ends of the rotating shaft.
[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sewage flows into the water seal cylinder through the grate and the water seal ring cover, then overflows from the top of the water seal cylinder into the pipe, and then flows out from the opening at the bottom of the pipe. When the sewage flows back into the water seal cylinder, the anti-overflow float plate floats up to the bottom of the water seal ring cover under the buoyancy of the sewage, thereby completely blocking the bottom of the water seal ring cover, reducing the possibility of sewage flowing back into the room; 2. When the anti-overflow floating plate floats up due to the buoyancy, the bottom end of the water seal ring cover is inserted into the ring groove to squeeze the elastic film, so that the elastic film and the bottom end of the water seal ring cover are closely fitted, thereby improving the sealing between the anti-overflow floating plate and the water seal ring cover, and further reducing the possibility of sewage backflowing into the room; 3. When the grate stops taking in water, the rotating plate assembly is driven to flip and rotate, thereby emptying the sewage remaining in the water seal cylinder, reducing the possibility of sewage deterioration, bacterial growth and odor emission; 4. When the lifting float descends, the elastic member cooperates with the threading ring to apply lateral tension to the pull line, ensuring that the counterweight balls of the two rotating plate assemblies can fall from the same side of the shaft, reducing the possibility of failure of the reciprocating forward and reverse motion due to opposite forces at both ends of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural diagram of Example 1 of the present application.
[0024] Figure 2 It is a cross-sectional view of the positional relationship between the rotating shaft, the pull wire and the counterweight ball in Example 2 of the present application.
[0025] Figure 3It is a cross-sectional view showing the positional relationship among the floating tube, the pull line and the weighted ball in Example 2 of the present application.
[0026] Explanation of the reference numerals: 1. connecting pipe; 2. connecting ring seat; 3. water seal ring cover; 4. grate; 5. water seal cylinder; 6. anti-overflow float; 61. ring groove; 7. elastic membrane; 8. flap; 9. buoy; 91. leaking hole; 10. lifting float; 101. through hole; 11. pull line; 12. counterweight ball; 13. hanging needle; 14. elastic member; 15. threading ring; 16. upper cover; 17. bracket; 18. rotating shaft. DETAILED DESCRIPTION
[0027] The following is combined with Figure 1-3 This application is described in further detail.
[0028] The embodiment of the present application discloses a water-sealed anti-backflow type floor drain.
[0029] Example 1 Reference Figure 1 The water-sealed anti-backflow type floor drain comprises a cylindrical pipe 1 buried in the ground, a circular ring-shaped upper cover 16 is welded to the top of the outer circumferential wall of the pipe 1, and a grate 4 is mounted on the top of the upper cover 16.
[0030] Reference Figure 1 The bottom of the pipe 1 is open and a connecting ring seat 2 for connecting with an underground drainage pipe is welded at the opening. A water seal ring cover 3 located below the grate 4 is mounted on the top of the pipe 1. The water seal ring cover 3 is funnel-shaped and open at both the upper and lower ends.
[0031] Reference Figure 1 A water seal tube 5 with an open top is suspended in the pipe 1, and a plurality of brackets 17 for being placed on the inner bottom wall of the pipe 1 are welded circumferentially on the outer wall of the water seal tube 5.
[0032] The bottom of the water seal ring cover 3 extends into the water seal tube 5 , and there is a gap between the outer wall of the water seal ring cover 3 and the inner wall of the water seal tube 5 , and between the outer wall of the water seal tube 5 and the inner wall of the connecting pipe 1 .
[0033] Reference Figure 1 An anti-overflow floating plate 6 is placed in the water seal tube 5 at a position below the water seal ring cover 3. When the anti-overflow floating plate 6 floats to be in close contact with the bottom of the water seal ring cover 3, the anti-overflow floating plate 6 blocks the open bottom of the water seal ring cover 3 at any position.
[0034] Reference Figure 1 The sewage passes through the grate 4 and the water seal ring cover 3 into the water seal cylinder 5, then overflows from the top edge of the water seal cylinder 5 into the connecting pipe 1, and then is discharged into the underground pipeline from the opening at the bottom of the connecting pipe 1.
[0035] When the sewage in the underground pipe flows back from the connecting pipe 1 into the water seal tube 5, the anti-overflow floating plate 6 is moved up by the buoyancy to fit tightly against the bottom of the water seal ring cover 3, thereby sealing the opening at the bottom of the water seal ring cover 3 and reducing the possibility of sewage further flowing back into the room.
[0036] Reference Figure 1 The top of the anti-overflow floating plate 6 is provided with an annular groove 61, and an elastic membrane 7 is bonded between the inner and outer walls of the annular groove 61. When the anti-overflow floating plate 6 floats up, the bottom end of the water seal ring cover 3 is inserted into the annular groove 61 and pushes the elastic membrane 7 to deform, and the elastic membrane 7 is conducive to improving the sealing performance between the anti-overflow floating plate 6 and the water seal ring cover 3, further reducing the possibility of sewage backflowing into the room.
[0037] In actual use, sewage overflow prevention is not limited to the overflow prevention floating plate 6 in the present application, but a whole circular plate can be directly covered on the grate 4. When sewage needs to be discharged, the user can manually remove the whole plate from above the grate 4.
[0038] The implementation principle of Example 1 is: when the sewage in the underground pipe flows back from the connecting pipe 1 to the water seal tube 5, the overflow prevention floating plate 6 is moved up by the buoyancy until it is tightly attached to the bottom of the water seal ring cover 3, thereby sealing the opening at the bottom of the water seal ring cover 3, thereby preventing the sewage from flowing back.
[0039] Example 2 Reference Figure 2 and Figure 3 The difference between this embodiment and embodiment 1 is that a turning opening is opened at the bottom of the water seal cylinder 5 and a turning plate 8 is arranged in the turning opening to rotate through a rotating shaft 18. A turning plate assembly for driving the turning and rotation is also arranged in the pipe 1, and the two ends of the rotating shaft 18 correspond to a turning plate assembly respectively.
[0040] Reference Figure 2 and Figure 3 The rotating plate assembly includes a buoy 9 welded to the outer circumferential wall of the water seal cylinder 5. The buoy 9 is hollow inside and open at the top. The top of the buoy 9 is lower than the top of the water seal cylinder 5. A plurality of water leakage holes 91 with smaller apertures are opened between the inner and outer walls of the buoy 9.
[0041] Reference Figure 2 and Figure 3 A lifting float 10 is placed in the buoy 9, and a guide groove (not shown in the figure) is vertically opened on the inner wall of the buoy 9. The lifting float 10 extends into the guide groove and slides with it. The end of the rotating shaft 18 extends into the buoy 9 and the lifting float 10 is located above the rotating shaft 18.
[0042] Reference Figure 2 and Figure 3A through hole 101 is opened between the upper and lower surfaces of the lifting floating plate 10, and a hanging pin 13 is bonded to the upper surface of the lifting floating plate 10 relative to the through hole 101. A pull wire 11 is bonded to the end of the rotating shaft 18, and the other end of the pull wire 11 passes through the through hole 101 and is tied to the hanging pin 13. A weight ball 12 is slidably sleeved on the pull wire 11.
[0043] Reference Figure 2 and Figure 3 When sewage overflows from the top of the water seal cylinder 5, part of the sewage flows into the buoy 9, and the lifting float 10 floats up under the action of buoyancy. When the lifting float 10 floats to a higher position, the pull wire 11 can pull the rotating shaft 18 to rotate, so that the connection between the pull wire 11 and the rotating shaft 18 rotates to the highest point, thereby realizing the positive rotation of the flap 8.
[0044] When the sewage in the float 9 gradually leaks out from the leakage hole 91, the lifting float 10 gradually descends, and the counterweight ball 12 gradually falls and slides on the pull line 11 until the counterweight ball 12 descends to a lower position. The gravity of the counterweight ball 12 can pull the rotating shaft 18 to reverse through the pull line 11.
[0045] The lifting and pulling of the floating plate 10, the pull line 11, the counterweight ball 12 and the rotating shaft 18 cooperate to achieve reciprocating forward and reverse flipping. During the flipping of the flap 8, the flipping mouth is in an open state, and the residual sewage in the water seal tube 5 can be emptied, reducing the possibility of sewage deterioration, bacterial growth and odor emission.
[0046] Reference Figure 2 and Figure 3 Elastic members 14 are arranged on the inner side walls of the two floats 9 at positions above the rotating shaft 18. The elastic members 14 can be elastic pull ropes, springs, metal elastic sheets, etc. A threading ring 15 is bonded to the end of the elastic member 14, and the pull wire 11 passes through the threading ring 15.
[0047] Reference Figure 2 and Figure 3 When the floating plate 10 is lowered, the elastic member 14 cooperates with the threading ring 15 to apply lateral tension to the pull line 11, ensuring that the counterweight balls 12 of the two rotating plate assemblies can fall from the same side of the rotating shaft 18, reducing the possibility of failure of the reciprocating forward and reverse motion due to opposite forces at both ends of the rotating shaft 18.
[0048] The implementation principle of Example 2 is: when sewage overflows from the top of the water seal cylinder 5, part of the sewage flows into the float 9, and the lifting float 10 floats up under the action of buoyancy. When the lifting float 10 floats to a higher position, the pull wire 11 can pull the rotating shaft 18 to rotate, so that the connection between the pull wire 11 and the rotating shaft 18 rotates to the highest point, thereby realizing the positive rotation of the flap 8.
[0049] When the sewage in the float 9 gradually leaks out from the leakage hole 91, the lifting float 10 gradually descends, and the counterweight ball 12 gradually falls and slides on the pull line 11 until the counterweight ball 12 descends to a lower position. The gravity of the counterweight ball 12 can pull the rotating shaft 18 to reverse through the pull line 11.
[0050] Thus, the lifting and pulling floating plate 10, the pull line 11, the counterweight ball 12 and the rotating shaft 18 cooperate to realize the reciprocating forward and reverse flipping. During the flipping of the flap 8, the flipping mouth is in an open state, and the residual sewage in the water seal cylinder 5 can be emptied, reducing the possibility of sewage deterioration, bacterial growth and odor emission.
[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A water-sealed anti-backflow type floor drain, comprising a tubular pipe (1) buried in the ground, the bottom of the pipe (1) is open and a connecting ring seat (2) for connecting with an underground drainage pipe is arranged at the opening, a funnel-shaped water-sealed ring cover (3) with open upper and lower ends is arranged on the top of the pipe (1), and a grate (4) is also arranged above the water-sealed ring cover (3), characterized in that: A water seal cylinder (5) with an open top is suspended in the connecting pipe (1), and the bottom of the water seal ring cover (3) extends into the water seal cylinder (5). There is a gap between the outer wall of the water seal ring cover (3) and the inner wall of the water seal cylinder (5), and between the outer wall of the water seal cylinder (5) and the inner wall of the connecting pipe (1). An anti-overflow floating plate (6) is placed in the water seal cylinder (5) at a position below the water seal ring cover (3). When the anti-overflow floating plate (6) floats to be in close contact with the bottom of the water seal ring cover (3), the anti-overflow floating plate (6) seals the open bottom of the water seal ring cover (3) at any position.
2. The water-sealed anti-backflow floor drain according to claim 1, characterized in that: The top of the anti-overflow floating plate (6) is provided with an annular groove (61), and an elastic membrane (7) for contacting the bottom end of the water supply sealing cylinder (5) is bonded between the inner and outer side walls of the annular groove (61).
3. The water-sealed anti-backflow floor drain according to claim 1, characterized in that: The bottom of the water seal cylinder (5) is provided with a turnover opening, in which a flap (8) is arranged to rotate via a rotating shaft (18), and a rotating plate assembly for driving the flap (8) to rotate is also arranged in the pipe (1).
4. The water-sealed anti-backflow type floor drain according to claim 3, characterized in that: The rotating plate assembly comprises a buoy (9) which is arranged on the outer wall of the water seal cylinder (5), is hollow inside and open at the top, a plurality of water leakage holes (91) are arranged on the buoy (9), a lifting floating plate (10) is placed inside the buoy (9), the rotating shaft (18) extends into the buoy (9), the lifting floating plate (10) is located above the rotating shaft (18), a pulling line (11) is tied between the rotating shaft (18) and the lifting floating plate (10), and a weight ball (12) is slidably sleeved on the pulling line (11).
5. The water-sealed anti-backflow floor drain according to claim 4, characterized in that: A guide groove is vertically formed on the side wall of the buoy (9), and the lifting floating plate (10) extends into the guide groove and is slidably matched therewith.
6. The water-sealed anti-backflow floor drain according to claim 4, characterized in that: A through hole (101) is opened between the upper and lower surfaces of the lifting floating plate (10), a hanging pin (13) is bonded to the upper surface of the lifting floating plate (10) at a position relative to the through hole (101), and the top end of the pulling wire (11) is tied to the hanging pin (13).
7. The water-sealed anti-backflow floor drain according to claim 3, characterized in that: Two rotating plate assemblies are arranged outside the water seal cylinder (5).
8. The water-sealed anti-backflow floor drain according to claim 4, characterized in that: An elastic member (14) is arranged on the inner wall of the buoy (9) at a position above the rotating shaft (18), a threading ring (15) is arranged at the end of the elastic member (14), and the pull wire (11) passes through the threading ring (15).