Secondary drainage system

Abstract

The utility model discloses a secondary drainage system which comprises a main drainage pipe located in a floor structure, a waterproof leveling layer is laid at the upper end of the floor structure, a waterproof layer is laid at the upper end of the waterproof leveling layer, one end of the waterproof layer is rolled downwards to the inner wall of the main drainage pipe, and the other end of the waterproof layer is rolled downwards to the inner wall of the main drainage pipe. A secondary drainage component is inserted into an opening in the upper end of the main drainage pipe, the secondary drainage component comprises an annular filter cover installed at the upper end of the waterproof layer and an adapting pipe arranged in the annular filter cover in a sleeved mode, the upper end of the adapting pipe is connected with a floor drain, and a waterproof protection layer is laid on the peripheral side of the annular filter cover. The upper end of the waterproof protection layer is connected with a brick surface layer through a mortar layer, and a plurality of U-shaped cavities communicated with the main drainage pipe are evenly formed in the outer side face of the annular filter cover. The secondary drainage component is connected with the main drainage pipe, the construction form is simple, accumulated water on the waterproof layer can be effectively drained, and the steel wire mesh is embedded in the annular filter cover, so that mortar is prevented from blocking the U-shaped cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of indoor waterproof treatment, and more specifically, to a secondary drainage system. Background Technique

[0002] Floor drains are important interfaces connecting the sewer system to the indoor floor. Currently, in batch residential projects, most bathrooms adopt the form of same-floor drainage with a structural caisson. After the general contractor's drain pipe is installed at the bottom of the caisson, the caisson is backfilled. After the waterproof layer is completed, the surface tiles are laid. The floor drain sewer pipe usually extends out of the waterproof layer and is connected to the floor drain. Since the water consumption in the bathroom is relatively large, even if the floor tiles have been beautifully jointed or caulked, the water on the surface layer will seep into the mortar layer to varying degrees during long-term use. If the secondary drainage system is not provided for the sewer pipe, water will accumulate above the waterproof surface layer for a long time, which will reduce the service life of the waterproof layer and then leak to the lower layer. Moreover, after the mortar layer in the caisson is saturated with water, it will seep outwards from the threshold stone, resulting in phenomena such as mildew of the wallpaper and paint in the room, seriously affecting the living quality of people. The current secondary drainage systems mainly have the following techniques:

[0003] 1. Using a concealed floor drain for drainage: A concealed floor drain is set on the first layer of waterproof backfill, and a slope is formed from the backfill layer to the concealed floor drain point. Waterproofing and sealing are done around the concealed floor drain to complete the secondary drainage. However, because the construction is relatively troublesome and it cannot solve the water accumulation problem caused by the leakage of the pipeline under the caisson, there are certain drawbacks.

[0004] 2. Drilling holes in the main pipe: Holes are drilled at equal intervals on the main pipe. The height of the holes is the same as the surface of the first waterproof layer, and the hole positions avoid the reserved drainage horizontal pipe interfaces. The slope is formed based on the lowest point of the drain pipe to achieve the purpose of secondary drainage. This method has a better drainage effect than the concealed floor drain method, but burrs are easily generated when drilling holes in the main pipe, which easily damage the waterproof layer and cause water leakage. Content of the Utility Model

[0005] In view of the above technical problems in the related art, the utility model provides a secondary drainage system that can solve the above problems.

[0006] To achieve the above technical purpose, the technical solution of the utility model is realized as follows:

[0007] A secondary drainage system includes a main drainage pipe located in a floor slab structure. A waterproof leveling layer is laid on the upper end of the floor slab structure, and a waterproof layer is laid on the upper end of the waterproof leveling layer. One end of the waterproof layer is rolled down to the inner wall of the main drainage pipe. The upper end opening of the main drainage pipe is plugged with a secondary drainage member. The secondary drainage member includes an annular filter cover installed on the upper end of the waterproof layer and a receiving pipe sleeved in the annular filter cover. The upper end of the receiving pipe is connected to a floor drain. A waterproof protective layer is laid on the outer peripheral side of the annular filter cover. The upper end of the waterproof protective layer is connected to a brick surface layer through a mortar layer. A plurality of U-shaped cavities communicating with the main drainage pipe are evenly arranged on the outer side surface of the annular filter cover.

[0008] Further, the upper end surface of the waterproof leveling layer is flush with the upper end surface of the main drainage pipe.

[0009] Further, the upper end surface of the waterproof protective layer is flush with the upper end surface of the annular filter cover.

[0010] Further, the receiving pipe includes an upper receiving pipe and a lower receiving pipe. The annular filter cover is sleeved on the top end of the lower receiving pipe. The bottom end of the upper receiving pipe is connected to the upper end surface of the annular filter cover. The outer diameter of the annular filter cover is greater than the outer diameter of the upper receiving pipe, and the outer diameter of the upper receiving pipe is greater than the outer diameter of the lower receiving pipe.

[0011] Further, the secondary drainage member is an integrally formed member.

[0012] Further, the floor drain includes a floor drain core plugged in the receiving pipe and a floor drain cover panel connected to the upper end of the receiving pipe. The floor drain core is a funnel-shaped structure, and water flow holes are formed in the floor drain cover panel.

[0013] Further, the lower end of the lower receiving pipe is plugged in the main drainage pipe, and a water flow gap is formed between the inner wall of the main drainage pipe and the outer wall of the lower receiving pipe. The U-shaped cavity is communicated with the water flow gap.

[0014] Further, a filtering steel wire mesh is installed in the U-shaped cavity.

[0015] Further, the upper end surface of the floor drain cover panel is flush with the upper end surface of the brick surface layer.

[0016] The beneficial effects of the present utility model: The secondary drainage member of the present application is directly attached to the waterproof layer surface layer, and will not cause secondary damage to the waterproof layer. By connecting the secondary drainage member with the main drainage pipe, the structural form is simple, and the accumulated water on the waterproof layer can be effectively discharged. Moreover, a steel wire mesh is inlaid in the annular filter cover to prevent the mortar from blocking the U-shaped cavity. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] The following further details the present invention with reference to the drawings.

[0019] Figure 1 is a sectional view of a secondary drainage system according to an embodiment of the present invention;

[0020] Figure 2 is a structural schematic diagram of a secondary drainage member according to an embodiment of the present invention;

[0021] Figure 3 is a structural schematic diagram of the connection and installation of a floor drain, a secondary drainage member, a main drain pipe, and a waterproof layer according to an embodiment of the present invention.

[0022] In the figure:

[0023] 1. Floor drain cover panel; 2. Secondary drainage member; 3. Main drain pipe; 4. Brick surface layer; 5. Mortar layer; 6. Waterproof protection layer; 7. Waterproof layer; 8. Waterproof leveling layer; 9. Floor slab structure; 10. Support block; 11. U-shaped cavity; 12. Upper receiving pipe; 13. Lower receiving pipe; 14. Filter wire mesh; 15. Floor drain core; 16. Annular filter cover. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0025] Such as Figures 1-3As shown in the figure, according to the present utility model, a secondary drainage system is disclosed, which includes a main drain pipe 3 located in a floor slab structure 9. A waterproof leveling layer 8 is laid on the upper end of the floor slab structure 9, and a waterproof layer 7 is laid on the upper end of the waterproof leveling layer 8. One end of the waterproof layer 7 is rolled down to the inner wall of the main drain pipe 3. The upper end opening of the main drain pipe 3 is plugged with a secondary drainage member 2. The secondary drainage member 2 includes an annular filter cover 16 installed on the upper end of the waterproof layer 7 and a receiving pipe sleeved in the annular filter cover 16. The upper end of the receiving pipe is connected to a floor drain. A waterproof protection layer 6 is laid on the outer peripheral side of the annular filter cover 16, and the upper end of the waterproof protection layer 6 is connected to a brick surface layer 4 through a mortar layer 5. A plurality of U-shaped cavities 11 communicating with the main drain pipe 3 are evenly arranged on the outer side surface of the annular filter cover 16.

[0026] Embodiment 1:

[0027] The floor drain core 15 in this application is of a funnel-shaped structure, with its large head end located in the upper receiving pipe 12 and its small head end extending into the lower receiving pipe 13, and the lower receiving pipe 13 is inserted into the main drain pipe 3. Therefore, the water flow on the brick surface layer 4 passes through the water flow holes on the floor drain cover panel 1 and flows into the main drain pipe 3 through the floor drain core 15 and the lower receiving pipe 13 in sequence. The annular filter cover 16 is closely attached to the surface layer of the waterproof layer 7 through a support block 10. A waterproof protection layer 6 is laid on the outer peripheral side of the annular filter cover 16, and the upper end of the waterproof protection layer 6 is connected to the brick surface layer 4 through a mortar layer 5. Moreover, a plurality of U-shaped cavities 11 communicating with the main drain pipe 3 are evenly arranged on the outer side surface of the annular filter cover 16. Therefore, the accumulated water in the mortar layer 5 can flow into the main drain pipe 3 through the U-shaped cavities 11 (filtered by a filter wire mesh 14), thus completing the secondary drainage.

[0028] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A secondary drainage system, characterized in that: The invention comprises a main drainage pipe (3) located in a floor structure (9), wherein a waterproof leveling layer (8) is laid on the upper end of the floor structure (9), a waterproof layer (7) is laid on the upper end of the waterproof leveling layer (8), one end of the waterproof layer (7) is rolled down to the inner wall of the main drainage pipe (3), and a secondary drainage component (2) is inserted into the upper opening of the main drainage pipe (3), wherein the secondary drainage component (2) comprises an annular filter cover (16) installed on the upper end of the waterproof layer (7) and a receiving pipe sleeved in the annular filter cover (16), wherein the upper end of the receiving pipe is connected to a floor drain, a waterproof protective layer (6) is laid on the outer peripheral side of the annular filter cover (16), and the upper end of the waterproof protective layer (6) is connected to a brick surface layer (4) through a mortar layer (5), and a plurality of U-shaped cavities (11) in communication with the main drainage pipe (3) are evenly arranged on the outer side surface of the annular filter cover (16).

2. A secondary drainage system according to claim 1, characterized in that: The upper end surface of the waterproof leveling layer (8) is flush with the upper end surface of the main drainage pipe (3).

3. A secondary drainage system according to claim 1, characterized in that: The upper end surface of the waterproof protective layer (6) is flush with the upper end surface of the annular filter cover (16).

4. A secondary drainage system according to claim 1, characterized in that: The receiving tube comprises an upper receiving tube (12) and a lower receiving tube (13), wherein the annular filter cover (16) is sleeved on the top end of the lower receiving tube (13), the bottom end of the upper receiving tube (12) is connected to the upper end surface of the annular filter cover (16), the outer diameter of the annular filter cover (16) is greater than the outer diameter of the upper receiving tube (12), and the outer diameter of the upper receiving tube (12) is greater than the outer diameter of the lower receiving tube (13).

5. A secondary drainage system according to claim 4, characterized in that: The secondary drainage component (2) is an integrally formed component.

6. A secondary drainage system according to claim 4, characterized in that: The floor drain comprises a floor drain core (15) inserted into the receiving tube and a floor drain cover panel (1) connected to the upper end of the receiving tube; the floor drain core (15) is a funnel-shaped structure; and a water flow hole is provided on the floor drain cover panel (1).

7. A secondary drainage system according to claim 4, characterized in that: The lower end of the lower connecting pipe (13) is inserted into the main drainage pipe (3), a water flow gap is formed between the inner wall of the main drainage pipe (3) and the outer wall of the lower connecting pipe (13), and the U-shaped cavity (11) is connected to the water flow gap.

8. A secondary drainage system according to claim 1, characterized in that: A filtering steel wire mesh (14) is installed in the U-shaped cavity (11).

9. A secondary drainage system according to claim 6, characterized in that: The upper end surface of the floor drain cover panel (1) is flush with the upper end surface of the brick surface layer (4).

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