In-line drainer

Abstract

The application relates to a same-layer drainer, which comprises a floor drain pot body provided with a water inlet, a drainage cavity and a drainage outlet, a water seal protrusion is arranged at the bottom wall of the drainage cavity, the water seal protrusion is located between the water inlet and the drainage outlet, a water inlet pipe is arranged at the water inlet, the lower end of the water inlet pipe extends into the floor drain pot body, and the lower end of the water inlet pipe is lower than the vertex of the water seal protrusion; the surface of the water seal protrusion facing the water inlet is a drainage surface, the surface of the water seal protrusion facing the drainage outlet is a water blocking surface, and the included angle between the drainage surface and the horizontal plane is less than or equal to the included angle between the water blocking surface and the horizontal plane. Since the included angle between the drainage surface and the horizontal plane is less than or equal to the included angle between the water blocking surface and the horizontal plane, a large included angle exists between the water blocking surface and the backflowing water flow, the flow speed of the backflowing water flow is effectively reduced, and the backflowing water flow is hindered.

Description

Technical Field

[0001] This application relates to the field of bathroom products, and in particular to a same-floor drain. Background Technology

[0002] In-floor drainage refers to drainage pipes (horizontal drainage pipes) that do not penetrate the floor slab and connect to the riser (main sewage riser) within the same floor. The main advantages are: increased indoor cleanliness, no restrictions on bathroom layout regarding pit distance, no damage to the original building structure, and no need to disturb neighbors during maintenance.

[0003] An existing invention application with publication number CN111501974A discloses a same-floor drainage odor-proof device, comprising a hollow, flat drain body. The drain body has integrally formed water seal protrusions with sloping sides, and an integrally formed folded portion inside the drain body. The vertical length from the highest point of the water seal protrusions to the folded portion is the water seal length. A limiting fold extends from the folded portion, and the distance from the highest point of the water seal protrusions to the bottom of the limiting fold is the water seal height.

[0004] When in use, water remains below the highest point of the water seal protrusion, thus forming a water seal between the highest point of the water seal protrusion and the bottom of the limiting bend. This water seal prevents odors from the sewer pipe from entering the room through the drain body.

[0005] In actual use, users expect the same-floor drain to drain water smoothly and prevent backflow. Summary of the Invention

[0006] In order to facilitate drainage and prevent backflow, this application provides a same-floor drain.

[0007] This application provides a same-floor drainage device, which adopts the following technical solution:

[0008] A floor drain device includes a drain body with an inlet, a drain chamber, and a drain outlet. A water seal protrusion is provided on the bottom wall of the drain chamber, and the water seal protrusion is located between the inlet and the drain outlet. An inlet pipe is provided at the inlet, and the lower end of the inlet pipe extends into the drain body, with the lower end of the inlet pipe being lower than the apex of the water seal protrusion. The surface of the water seal protrusion facing the inlet is designated as a drain surface, and the surface of the water seal protrusion facing the drain outlet is designated as a water-blocking surface. The angle between the drain surface and the horizontal plane is less than or equal to the angle between the water-blocking surface and the horizontal plane.

[0009] By adopting the above technical solution, the water flow in the drain pot remains horizontal. During drainage, water enters the drain chamber through the inlet pipe, then flows along the drain surface, eventually leaping over the water seal protrusion to be discharged. If backflow occurs, the water must flow along the water-blocking surface to leap over the water seal protrusion. Because the angle between the drain surface and the horizontal plane is less than or equal to the angle between the water-blocking surface and the horizontal plane, there is a large angle between the water-blocking surface and the backflowing water, effectively reducing the flow velocity of the backflowing water and hindering its flow.

[0010] Preferably, it also includes an elastic bladder, which is located inside the drain pot and on the side of the water seal protrusion away from the water outlet; the elastic bladder is lower than the lower end of the water inlet pipe and is filled with gas.

[0011] By adopting the above technical solution, water remains below the apex of the water seal protrusion during the drainage process, thus forming a water seal between the apex of the water seal protrusion and the bottom of the inlet pipe. When the liquid level of the water seal is level with the apex of the water seal protrusion, the water pressure on the elastic bladder is at its maximum, and the volume of the elastic bladder is at its minimum. As the water at the water seal slowly evaporates, the liquid level of the water seal decreases, and the water pressure on the elastic bladder decreases. The gas causes the volume of the elastic bladder to increase to compensate for part of the decrease in liquid level height. That is, the elastic bladder, which can deform elastically, is used to maintain a high liquid level in the water seal as much as possible, thereby prolonging the water seal time.

[0012] Preferably, the elastic bladder includes a support ring and an elastic membrane, the support ring being connected to the bottom wall of the drainage cavity, and the edge of the elastic membrane being connected to the support ring.

[0013] By adopting the above technical solution, a water seal is formed, which allows the elastic bladder to be completely submerged in water, so that the volume change of the elastic bladder is used entirely to compensate for the reduced liquid level.

[0014] Preferably, the bottom wall of the drainage cavity is provided with an air hole, which connects to the outside of the drain pot body and the elastic bladder.

[0015] By adopting the above technical solution, as the water at the water seal slowly evaporates, the liquid level of the water seal decreases, the water pressure on the elastic membrane decreases, and gas enters the elastic bladder through the pores, increasing the volume of the elastic bladder to compensate for part of the reduced liquid level.

[0016] Preferably, it also includes an air reservoir, which is located outside the drain body, is connected to an air hole, and is elastic.

[0017] By adopting the above technical solution, when the liquid level of the water seal is flush with the apex of the water seal protrusion, the water pressure on the elastic bladder is the greatest, the volume of the elastic bladder is the smallest, and the volume of the air storage bladder is the largest. Compared with components that are not easily deformable, such as plastic shells, the use of air storage bladders to increase the volume change of the elastic bladder is beneficial to maintaining a high liquid level in the water seal as much as possible.

[0018] Meanwhile, if the elastic bladder leaks, the air reservoir can be used to block the leaking water.

[0019] Preferably, when the air pressure change is the same, the volume change of the air storage bladder is less than the volume change of the elastic bladder.

[0020] By adopting the above technical solution, the volume change of the air storage bladder located outside the drain pot is reduced, which is beneficial for the installation and use of the same-floor drainer in the floor.

[0021] Preferably, the upper surface of the elastic membrane is used to adhere to the lower end surface of the water inlet pipe.

[0022] By adopting the above technical solution, when the liquid level in the drain pot is lower than the bottom of the inlet pipe, under the action of water pressure, air pressure, etc., the upper surface of the elastic bladder adheres to the lower surface of the inlet pipe, which helps to prevent the odor in the pipe from entering the room through the inlet pipe.

[0023] Preferably, the geometric center of the elastic membrane is located between the water inlet pipe axis and the water seal protrusion.

[0024] By adopting the above technical solution, when drainage is required, water flows into the drain pot through the inlet pipe. The water flow causes the elastic membrane to undergo elastic deformation, and the deformation at the center of the elastic membrane is greater than that at the edge of the elastic membrane, so as to guide the water flow to the water seal protrusion using the elastic membrane.

[0025] Preferably, the horizontal cross-sectional area of ​​the drainage cavity decreases as the height increases, from the lower end of the water inlet pipe to the apex of the water seal protrusion.

[0026] By adopting the above technical solution, the liquid surface area at the water seal is controlled, the evaporation rate is reduced, and the water seal is kept at a high liquid level as much as possible.

[0027] Preferably, it also includes a check drain core, which is installed inside the water inlet pipe.

[0028] By adopting the above technical solution, and with the addition of a check drain core, backflow of water is further prevented.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Inside the drain pot, the water flow remains horizontal. During drainage, water enters the drain chamber through the inlet pipe, then flows along the drain surface, eventually leaping over the water seal protrusion to exit. If backflow occurs, the water must flow along the water-blocking surface to leap over the water seal protrusion. Because the angle between the drain surface and the horizontal plane is less than or equal to the angle between the water-blocking surface and the horizontal plane, there is a larger angle between the water-blocking surface and the backflow, effectively reducing the velocity of the backflow and hindering it.

[0031] 2. During the drainage process, water remains below the apex of the water seal protrusion, thus forming a water seal between the apex of the water seal protrusion and the bottom of the inlet pipe. When the liquid level of the water seal is level with the apex of the water seal protrusion, the water pressure on the elastic bladder is at its maximum, and the volume of the elastic bladder is at its minimum. As the water at the water seal slowly evaporates, the liquid level of the water seal decreases, and the water pressure on the elastic bladder decreases. The gas causes the volume of the elastic bladder to increase to compensate for part of the decrease in liquid level. That is, the elastic bladder, which can deform elastically, is used to maintain a high liquid level in the water seal as much as possible, thereby prolonging the water seal time.

[0032] 3. When the liquid level in the drain pot is lower than the bottom of the inlet pipe, under the action of water pressure and air pressure, the upper surface of the elastic bladder adheres to the lower surface of the inlet pipe, which helps to prevent odors in the pipe from entering the room through the inlet pipe. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the same-floor drainage system.

[0034] Figure 2 This is a cross-sectional view of the drain system on the same floor.

[0035] Figure 3 It is a cross-sectional view of the elastic bladder and the air reservoir.

[0036] Figure 4 This is a cross-sectional view of a floor drain in one embodiment.

[0037] Explanation of reference numerals in the attached drawings: 1. Drain body; 11. Inlet; 12. Drain chamber; 13. Drain outlet; 14. Inlet pipe; 15. Baffle ring; 16. Air hole; 2. Installation pipe; 3. Check drain core; 31. Main body; 311. Inlet opening; 312. Drain opening; 32. Flip plate; 33. Weight; 4. Water seal protrusion; 41. Drain surface; 42. Water-blocking surface; 5. Filter plate; 6. Elastic bladder; 61. Support ring; 62. Elastic membrane; 7. Air reservoir; 71. Elastic sheet; 8. Magnet. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0039] Reference Figure 1 and Figure 2 This application discloses a floor drain device, including a drain body 1, an installation pipe 2, and a check drain core 3.

[0040] The drain body 1 has an inlet 11, a drain chamber 12 and a drain outlet 13 that are interconnected. A water seal protrusion 4 is provided on the bottom wall of the drain chamber 12, and the water seal protrusion 4 is located between the inlet 11 and the drain outlet 13.

[0041] A water inlet pipe 14 is provided at the water inlet 11. The lower end of the water inlet pipe 14 extends into the drain body 1, and the lower end of the water inlet pipe 14 is lower than the apex of the water seal protrusion 4. At the same time, the axis of the water inlet pipe 14 is perpendicular to the axis of the drain outlet 13.

[0042] In actual installation and use, the axis of the water inlet pipe 14 is vertical. During drainage, water remains in the drainage chamber 12 and below the apex of the water seal protrusion 4 to form a water seal, and the vertical height from the apex of the water seal protrusion 4 to the lower end of the water inlet pipe 14 is the water seal height.

[0043] The surface of the water seal protrusion 4 facing the inlet 11 is designated as the drainage surface 41, and the upper end of the drainage surface 41 is inclined towards the drain outlet 13. The surface of the water seal protrusion 4 facing the drain outlet 13 is designated as the water-blocking surface 42. The angle between the drainage surface 41 and the horizontal plane is less than or equal to the angle between the water-blocking surface 42 and the horizontal plane. It should be noted that the angle between the drainage surface 41 and the horizontal plane is less than or equal to 90°, and the angle between the water-blocking surface 42 and the horizontal plane is less than or equal to 90°.

[0044] In this embodiment, the lower end of the water-blocking surface 42 is inclined toward the drain outlet 13, so that an obtuse angle with a downward opening is formed between the drain surface 41 and the water-blocking surface 42. In other embodiments, the lower end of the water-blocking surface 42 may also be inclined away from the drain outlet 13 (i.e., the lower end of the water-blocking surface 42 extends below the drain surface 41), and an acute angle with a downward opening is formed between the drain surface 41 and the water-blocking surface 42.

[0045] Meanwhile, between the lower end of the inlet pipe 14 and the apex of the water seal protrusion 4, the horizontal cross-sectional area of ​​the drain chamber 12 decreases as the height increases. That is, the higher the water seal height, the smaller the surface area of ​​the water seal.

[0046] Reference Figure 3 The water inlet pipe 14 has a retaining ring 15 on its inner circumference. The mounting pipe 2 is coaxially embedded in the water inlet pipe 14, and the lower end surface of the mounting pipe 2 touches the retaining ring 15. At the same time, the outer circumferential surface of the mounting pipe 2 and the inner circumferential surface of the water inlet pipe 14 are sealed by multiple sealing rings. In this embodiment, three sealing rings are provided.

[0047] The check drain core 3 is connected inside the installation pipe 2. The check drain core 3 includes a main body 31, a flap 32, and a weight 33.

[0048] The main body 31 is coaxially connected to the mounting tube 2. In this embodiment, the upper end of the mounting tube 2 is threaded, and the main body 31 is threadedly connected to the inside of the mounting tube 2.

[0049] The main body 31 is provided with a water inlet 311 and a drain outlet 312. A flap 32 is rotatably connected to the main body 31, and the flap 32 is used to cover the drain outlet 312 under the action of gravity. A weight 33 is connected to the flap 32 to increase the gravity.

[0050] In this embodiment, the same-floor drainer also includes a filter plate 5, and the filter plate 5 covers the water inlet opening 311, so as to prevent debris from entering the check drain core 3 and the drain pot body 1.

[0051] Reference Figure 2 and Figure 3 The same-floor drain also includes an elastic bladder 6 and an air reservoir 7.

[0052] The elastic bladder 6 is filled with gas. The gas can be air, nitrogen, etc. The elastic bladder 6 is located inside the drain body 1, and is located on the side of the water seal protrusion 4 away from the water outlet. At the same time, the elastic bladder 6 is lower than the lower end of the water inlet pipe 14. In this embodiment, a part of the elastic bladder 6 is located directly below the water inlet pipe 14.

[0053] The elastic bladder 6 includes a support ring 61 and an elastic membrane 62. The support ring 61 is fixedly connected to the bottom wall of the drainage chamber 12. In this embodiment, the inner diameter of the support ring 61 is larger than the inner diameter of the inlet pipe 14.

[0054] The edge of the elastic membrane 62 is connected to and sealed to the support ring 61, so that the bottom wall of the drainage chamber 12, the inner peripheral wall of the support ring 61, and the lower surface of the elastic membrane 62 form an air cavity.

[0055] The upper surface of the elastic membrane 62 is used to fit the lower end surface of the water inlet pipe 14. The geometric center of the elastic membrane 62 (in this embodiment, the geometric center of the elastic membrane 62 is the center of the circle of the elastic membrane 62) is located between the axis of the water inlet pipe 14 and the water seal protrusion 4; at the same time, the difference between the inner diameter of the support ring 61 and the inner diameter of the water inlet pipe 14 is greater than the center distance between the support ring 61 and the water inlet pipe 14 in the horizontal direction.

[0056] The bottom wall of the drainage chamber 12 is provided with an air hole 16, which connects the outside of the drain pot body 1 and the elastic bladder 6 (i.e. the enclosed air chamber).

[0057] The air reservoir 7 is elastic and is located outside the drain pot body 1. The air reservoir 7 is connected to the air hole 16; at the same time, under the same air pressure change, the volume change of the air reservoir 7 is less than the volume change of the elastic bladder 6.

[0058] In this embodiment, the air reservoir 7 includes an elastic sheet 71; the edge of the elastic sheet 71 is fixedly connected (e.g., glued) to the outer surface of the drain pot body 1 and sealed, and the elastic sheet 71 covers the air hole 16. The upper surface of the elastic sheet 71 and the outer surface of the drain pot body 1 together form an air chamber, and the air chamber is connected to the air hole 16.

[0059] When the liquid level in the drain pot 1 is lower than the bottom of the inlet pipe 14, the elastic sheet 71 can be attached to the outer surface of the drain pot 1 so that the gas in the air storage bladder 7 (i.e., the air chamber) enters the elastic bladder 6 (i.e., the air cavity), thereby causing the upper surface of the elastic membrane 62 to be attached to the lower surface of the inlet pipe 14.

[0060] Reference Figure 4 In one embodiment, a magnet 8 is also connected to the elastic membrane 62. The magnet 8 and the weight 33 can be attracted by magnetic force. That is, the weight 33 can be a magnet or an iron block.

[0061] Meanwhile, when the elastic membrane 62 is in a horizontal state, the vertical component of the magnetic force between the magnet 8 and the weight 33 is equal to the weight of the magnet 8 itself.

[0062] The implementation principle of a floor drain device according to an embodiment of this application is as follows: In the drain body 1, the water flow is still horizontal. During drainage, water enters the drain chamber 12 through the inlet pipe 14, and then flows along the drain surface 41, and then the water flows over the water seal protrusion 4 to be discharged. If there is backflow, the water needs to flow along the water-blocking surface 42 to over the water seal protrusion 4. Because the angle between the drain surface 41 and the horizontal plane is less than or equal to the angle between the water-blocking surface 42 and the horizontal plane, the water-blocking surface 42 has a large angle with the backflowing water flow, which effectively reduces the flow velocity of the backflowing water flow and helps to block the backflowing water flow.

[0063] During drainage, water remains below the apex of the water seal protrusion, forming a water seal between the apex of the water seal protrusion and the bottom of the inlet pipe 14. When the liquid level of the water seal is level with the apex of the water seal protrusion, the water pressure on the elastic bladder 6 is at its maximum, and the volume of the elastic bladder 6 is at its minimum. As the water at the water seal slowly evaporates, the liquid level of the water seal decreases, and the water pressure on the elastic bladder 6 decreases. The gas causes the volume of the elastic bladder 6 to increase to compensate for part of the decreased liquid level. That is, the elastically deformable elastic bladder 6 is used to maintain a high liquid level in the water seal as much as possible, thereby prolonging the water seal time.

[0064] When the liquid level in the drain pot 1 is lower than the bottom of the inlet pipe 14, under the action of water pressure, air pressure, etc., the upper surface of the elastic bladder 6 adheres to the lower surface of the inlet pipe 14, which helps to prevent the odor in the pipe from entering the room through the inlet pipe 14.

[0065] 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 floor drain device, comprising a drain body (1), the drain body (1) having an inlet (11), a drain cavity (12) and a drain outlet (13), a water seal protrusion (4) being provided on the bottom wall of the drain cavity (12), and the water seal protrusion (4) being located between the inlet (11) and the drain outlet (13), an inlet pipe (14) being provided at the inlet (11), the lower end of the inlet pipe (14) extending into the drain body (1), and the lower end of the inlet pipe (14) being lower than the apex of the water seal protrusion (4); characterized in that: The surface of the water seal protrusion (4) facing the inlet (11) is designated as the drainage surface (41), and the surface of the water seal protrusion (4) facing the drain outlet (13) is designated as the water-blocking surface (42). The angle between the drainage surface (41) and the horizontal plane is less than or equal to the angle between the water-blocking surface (42) and the horizontal plane. It also includes an elastic bladder (6), which is located inside the drain body (1) and on the side of the water seal protrusion (4) away from the water outlet; the elastic bladder (6) is lower than the lower end of the water inlet pipe (14) and is filled with gas.

2. The same-floor drainage device according to claim 1, characterized in that: The elastic bladder (6) includes a support ring (61) and an elastic membrane (62). The support ring (61) is connected to the bottom wall of the drainage cavity (12), and the edge of the elastic membrane (62) is connected to the support ring (61).

3. The same-floor drainage device according to claim 1 or 2, characterized in that: The bottom wall of the drainage chamber (12) is provided with an air hole (16), which connects the outside of the drain body (1) and the elastic bladder (6).

4. The same-floor drainage device according to claim 3, characterized in that: It also includes an air reservoir (7), which is located outside the drain body (1), and is connected to the air hole (16). The air reservoir (7) is elastic.

5. The same-floor drainage device according to claim 4, characterized in that: When the air pressure changes the same, the volume change of the air storage bladder (7) is less than the volume change of the elastic bladder (6).

6. The same-floor drainage device according to claim 2, characterized in that: The upper surface of the elastic membrane (62) is used to adhere to the lower end surface of the water inlet pipe (14).

7. The same-floor drainage device according to claim 6, characterized in that: The geometric center of the elastic membrane (62) is located between the axis of the water inlet pipe (14) and the water seal protrusion (4).

8. The same-floor drainage device according to claim 1, characterized in that: Between the lower end of the water inlet pipe (14) and the apex of the water seal protrusion (4), the horizontal cross-sectional area of ​​the drain cavity (12) decreases as the height increases.

9. The same-floor drainage device according to claim 1, characterized in that: It also includes a check drain core (3), which is installed inside the water inlet pipe (14).

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