Construction method for preventing accumulated water in bathroom floor from leaking

Abstract

A construction method for preventing accumulated water in a bathroom floor from leaking comprises the steps that firstly, a hole is formed in the position, where a sewer pipe is installed, of a reinforced concrete floor after civil engineering of a bathroom is completed, and a double-wall drainage anti-seepage sewer pipe fitting is installed, or the double-wall drainage anti-seepage sewer pipe fitting is pre-buried before a reinforced concrete structural slab of the bathroom is poured. The outer pipe is arranged on the outer upper portion of the inner pipe in a sleeving mode and integrated with the inner pipe, the waterproof edge pressing ring is arranged on the outer edge of the bottom end of the outer pipe, the outer pipe drainage holes are formed in the periphery of the outer pipe, the top end and the bottom end of the outer pipe are connected with the inner pipe in a sealed mode through a top plate and a bottom plate respectively, and the bottom plate inclines downwards from the outer pipe to the inner pipe. And an inner tube drainage hole is formed in the inner tube. And then a lower leveling and sloping layer, a lower waterproof layer, a protective layer, a backfill layer, a cushion layer and an upper waterproof layer are constructed on the reinforced concrete structural slab. Accumulated water in the bathroom floor can be thoroughly drained, construction is easy and convenient, civil engineering cost is not increased, and practicability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of anti-leakage construction of bathroom floors. Background Art

[0002] In the construction of housing buildings, it is very important to do a good job in preventing water leakage in the bathroom. To prevent water leakage in the bathroom, in addition to making a reasonable design of the water pipe lines, ensuring the quality of the pipeline materials and the reliability of the pipeline connections, and doing a good job in the waterproof layer of the bathroom, it is also necessary to consider the drainage measures when water accumulates due to water leakage in the pipeline or water leakage in the decorative layer (upper waterproof layer) of the bathroom, so as to prevent water from accumulating in the bathroom for a long time without being drained in time, resulting in water leakage in the bottom plate or side wall of the bathroom, endangering the rooms downstairs and adjacent rooms, and affecting the normal use of the house.

[0003] To solve the problem of bathroom water seepage, each construction unit and relevant technical personnel have been continuously adopting and exploring various means. For example, a new type of drainage structure disclosed in CN209817049U includes a drainage main body and an outer sleeve. The outer sleeve includes a water seepage section disposed in the cement mortar layer and a drainage section connected to the drainage pipe. A plurality of water overflow holes are provided on the surface of the water seepage section, and a plurality of drainage ports are provided on the bottom surface of the drainage section. A diversion channel is provided between the drainage main body and the outer sleeve. The water accumulated in the cement mortar flows into the diversion channel through the water overflow holes on the water seepage section and is discharged into the drainage pipe through the drainage ports, preventing water from accumulating in the cement mortar for a long time to form leakage. The water seepage section of its outer sleeve is only disposed in the cement mortar layer, and the lower surface of the connection section is placed at the opening of the drainage pipe through the provided placement step, which solves the problem that the surrounding of the floor drain is not dense in the bathroom, balcony, etc. during the decoration process or the water in the bathroom cannot be discharged from the tile mortar. However, the water accumulated in the backfill layer below the tile mortar layer in the bathroom cannot be discharged. In addition, the lower surface of the connection section is only placed at the opening of the drainage pipe through the provided placement step, and the installation is unstable. In addition, its structure is relatively complex. A bending structure extends inward from the top of the inner cavity of the outer sleeve, and a transition plane connected to the outer sleeve is provided on the top surface of the drainage main body. Hooks matching the bending structure need to be provided on the outer edge of the transition plane, and the two are snap-connected. Its manufacturing and assembly are troublesome, and it is easy to be damaged during disassembly. A leak-proof bathroom and its leak-proof method disclosed in CN104047356A is to additionally provide a concealed floor drain connected to the floor drain drainage pipe. The top of the concealed floor drain is connected to the bathroom floor, the top end of the concealed floor drain is closed, and a plurality of small holes are provided on the side wall to introduce the water seeping into the floor into the floor drain drainage pipe to prevent the water seepage in the bathroom from leaking into the adjacent room. This structural design requires additional installation of a concealed floor drain, which is troublesome in construction and has high requirements for construction quality. The concealed floor drain also cannot ensure complete drainage of the water accumulated in each layer of the floor, such as the leveling layer, waterproof layer, and waterproof protection layer. The sunken bathroom backfill layer drainage technology disclosed in CN119122083A sets a side wall floor drain for collecting the seepage water in the backfill layer of the sunken bathroom in the backfill layer of the sunken bathroom. The side wall floor drain is connected to the main floor drain drainage pipe of the lower bathroom through a drain pipe. The drain pipes of the upper bathrooms are connected to the main floor drain drainage pipes of the lower bathrooms one by one to form a leakage drainage system for the backfill layer of the sunken bathrooms in the whole building. This method requires additional floor drains on the side wall, increasing the usage of water pipes and floor drains, and the construction is complex, with higher requirements for waterproof construction.

[0004] In summary, the existing technical means generally have problems such as inability to drain all the accumulated water, complex structures of waterproof and drainage devices, complex construction processes, high construction requirements, high costs, and even the need to damage the civil engineering structure. Summary of the Invention

[0005] The object of the present invention is to solve the deficiencies of the prior art and provide a construction method that is simple to construct, does not damage the existing civil engineering structure of the building, does not increase the civil engineering cost, and can thoroughly discharge the accumulated water in the bathroom floor to prevent the leakage of the accumulated water.

[0006] The technical solution adopted by the present invention is as follows: A construction method for preventing the leakage of accumulated water in the bathroom floor, the method is as follows: Step 1: First, open a hole at the position of the downpipe on the reinforced concrete floor slab after the civil engineering of the bathroom is completed, and install a double-wall drainage and anti-seepage downpipe fitting in the hole, or pre-embed a double-wall drainage and anti-seepage downpipe fitting before pouring the reinforced concrete structural slab of the bathroom; the double-wall drainage and anti-seepage downpipe fitting includes a vertical inner pipe, an outer pipe sleeved on the upper part outside the inner pipe and integrally connected with the inner pipe, a waterproof pressing edge ring arranged at the outer edge of the bottom end of the outer pipe, and outer pipe drainage holes opened at different height positions on the periphery of the outer pipe. The top end of the outer pipe is hermetically connected with the inner pipe through a top plate, and the bottom end of the outer pipe is hermetically connected with the inner pipe through a bottom plate. The bottom plate slopes downward from the outer pipe to the inner pipe. An inner pipe drainage hole is opened at the bottom of the inner pipe located inside the bottom plate; the part above the outer pipe of the double-wall drainage and anti-seepage downpipe fitting is arranged above the reinforced concrete floor slab, and the downpipe continues to be connected downward below the reinforced concrete floor slab; Step 2: Construct a lower leveling and sloping layer on the reinforced concrete floor slab with cement mortar; Step 3: Make a lower waterproof layer on the lower leveling and sloping layer with a waterproof material; Step 4: Lay a protective layer on the lower waterproof layer with cement mortar; Step 5: Backfill ceramsite or other backfill materials to form a backfill layer; Step 6: Lay a cement mortar cushion layer on the backfill layer; Step 7: Make an upper waterproof layer on the cement mortar cushion layer with a waterproof material.

[0007] Further, before backfilling ceramsite or other backfill materials in the above step 5, a wire mesh is arranged in a circle on the outer pipe of the double-wall drainage and anti-seepage downpipe fitting.

[0008] Further, an upper leveling and sloping layer is laid on the upper waterproof layer with cement mortar, and a decorative layer is laid on the upper leveling and sloping layer.

[0009] Further, the waterproof pressing edge ring of the double-wall drainage and anti-seepage downpipe fitting is inclined upward outward at the same slope as the bottom plate.

[0010] Further, the waterproof pressing edge ring of the double-wall drainage and anti-seepage downpipe fitting is a horizontal pressing edge ring.

[0011] Further, a water stop ring is arranged in a circle outside the lower part of the inner pipe of the double-wall drainage and anti-seepage downpipe fitting.

[0012] Further, the aperture of the outer pipe drainage holes of the double-wall drainage and anti-seepage sewer fitting is 1-5 mm.

[0013] Further, the aperture of the inner pipe drainage holes of the double-wall drainage and anti-seepage sewer fitting is 5-10 mm.

[0014] The present invention has the following advantages: By using a specially designed double-wall drainage and anti-seepage sewer fitting to replace the traditional sewer fitting, an inner pipe and an outer pipe are arranged on the double-wall drainage and anti-seepage sewer fitting, outer pipe drainage holes are opened at different height positions on the outer circumference of the outer pipe, the bottom plate is set to incline downward towards the inner pipe, and inner pipe drainage holes are opened at the bottom of the inner pipe located inside the bottom plate. During the civil engineering construction, the present invention is installed at the position of the bathroom sewer hole, and the outer pipe part is located in the backfill layer of the bathroom. After the civil engineering construction and the house decoration are completed, when the pipeline in the bathroom leaks or the decorative layer (or the upper waterproof layer) seeps water, resulting in water accumulation above the lower waterproof layer in the bathroom, the accumulated water will flow into the space between the outer pipe and the inner pipe along the outer pipe drainage holes and be discharged through the inner pipe drainage holes. Since the bottom plate inclines downward towards the inner pipe, the accumulated water can be drained completely, thus effectively avoiding water accumulation and leakage in the bathroom. The double-wall drainage and anti-seepage sewer fitting adopted by the method of the present invention has a simple structure, and the outer pipe and the inner pipe are of an integral structure. As long as the aperture of the outer pipe drainage holes is small, or a wire mesh with small mesh holes is arranged outside the outer pipe, building sand and gravel are not likely to enter the outer pipe to form blockage. The method of the present invention is simple to construct, basically the same as the existing process of installing bathroom sewer pipes, does not increase the construction process and difficulty, nor does it increase the civil engineering cost, and has strong practicability. Description of the Drawings

[0015] Figure 1 is a schematic structural view of the double-wall drainage and anti-seepage sewer fitting used in the method of the present invention; Figure 2 is a schematic structural view of another form of the double-wall drainage and anti-seepage sewer fitting used in the method of the present invention; Figure 3 The method of the present invention adopts Figure 1 Schematic installation and use view of the double-wall drainage and anti-seepage sewer fitting with the structure; Figure 4 The method of the present invention adopts Figure 2 Schematic installation and use view of the double-wall drainage and anti-seepage sewer fitting with the structure. Detailed Embodiments

[0016] The content of the present invention will be further described below in conjunction with the drawings of the specification.

[0017] A construction method for preventing water accumulation and leakage in the bathroom floor is as Figure 3 , Figure 4 shown, and the method is as follows: Step 1: First, make a hole at the position for installing the downpipe on the reinforced concrete floor slab after the civil engineering of the bathroom is completed, and install a double-wall drainage and anti-seepage downpipe fitting in the hole. Alternatively, the double-wall drainage and anti-seepage downpipe fitting can be pre-embedded before the pouring of the reinforced concrete structural slab of the bathroom. The double-wall drainage and anti-seepage downpipe fitting is as shown in Figure 1 , Figure 2 , and includes a vertical inner pipe 1, an outer pipe 2 sleeved on the upper part outside the inner pipe and integrally connected to the inner pipe, a waterproof pressing edge ring 3 provided at the outer edge of the bottom end of the outer pipe, and outer pipe drainage holes 2a opened at different height positions on the circumference of the outer pipe. The top end of the outer pipe is hermetically connected to the inner pipe through a top plate 4, and the bottom end of the outer pipe is hermetically connected to the inner pipe through a bottom plate 5. The bottom plate slopes downward from the outer pipe to the inner pipe, and an inner pipe drainage hole 1a is opened at the bottom of the inner pipe located inside the bottom plate. Generally, the aperture of the outer pipe drainage hole 2a can be 1 - 5 mm, as long as water can seep through. The aperture of the inner pipe drainage hole 1a can be slightly larger, generally 5 - 10 mm, which can not only ensure smooth drainage but also wash a small amount of fine powder that has fallen into the inner pipe and then drain it out normally along the drainage system. The waterproof pressing edge ring 3 at the outer edge of the bottom end of the outer pipe plays a role in water blocking and installation positioning. The waterproof pressing edge ring 3 can be as shown in Figure 3 , sloping upward outward in the same slope as the bottom plate 5, which is more convenient for civil engineering construction. As a preferred embodiment, the outer end of the waterproof pressing edge ring can be turned up with a curled edge 3a, and the outer side surface of the curled edge is designed as an uneven honeycomb surface or wavy surface, which can better combine with the cement mortar, Figure 1 and a partial honeycomb surface 3b is schematically drawn. The waterproof pressing edge ring 3 can also be as shown in Figure 4 , and is set as a horizontal pressing edge ring. The present invention can also be provided with a water stop ring 6 around the lower part of the inner pipe to play a role in anti-seepage and water stopping. The part above the outer pipe of the double-wall drainage and anti-seepage downpipe fitting is arranged above the reinforced concrete floor slab A, and the downpipe continues to be connected below the reinforced concrete floor slab A; Step 2: Construct a lower leveling and slope-forming layer B with cement mortar on the reinforced concrete floor slab A; Step 3: Make a lower waterproof layer C with waterproof materials on the lower leveling and slope-forming layer B; Step 4: Lay a protective layer D with cement mortar on the lower waterproof layer C; Step 5: Arrange a wire mesh 7 around the outer pipe 2 of the double-wall drainage and anti-seepage downpipe fitting to prevent fine backfill materials from falling into the space between the outer pipe and the inner pipe through the outer pipe drainage holes during subsequent backfilling. The wire mesh can be made of stainless steel wire mesh; Step 6: Backfill ceramsite or other suitable backfill materials on the cement mortar laid protective layer D to form a backfill layer E; Step 7: Lay a cement mortar cushion layer F on the backfill layer E; Step 8: Make an upper waterproof layer G with waterproof materials on the cement mortar cushion layer F.

[0018] During subsequent decoration, the upper leveling and slope-forming layer H is laid on the upper waterproof layer G with cement mortar (the upper leveling and slope-forming layer is usually set with a certain slope to lead water into the floor drain), and then the decorative layer L (such as floor tiles, and the decorative layer is usually set with a certain slope to lead water into the floor drain) is laid on the upper leveling and slope-forming layer. A floor drain 8 is installed at the upper end of the inner pipe 1 of the double-wall drainage and anti-seepage lower water pipe fitting.

[0019] By using the method of the present invention, when the pipe fittings and the decorative layer (upper waterproof layer) in the bathroom on the upper floor leak water, even when water leaks into the structural layer above the lower waterproof layer in the bathroom (such as the cushion layer F and the backfill layer E) to form accumulated water, the accumulated water will flow into the space between the outer pipe and the inner pipe along the drainage holes in the outer pipe, and flow into the inner pipe through the drainage holes in the inner pipe and be discharged. Since the bottom plate slopes downward towards the inner pipe, smooth drainage can be ensured, and the accumulated water can be drained completely, thereby effectively avoiding the long-term accumulation of water between the structural layers in the bathroom and leaking to the side wall and the lower floor. Figure 3 The cement mortar protective layer D in [description] can be better combined with the honeycomb-shaped uneven surface of the upturned edge 3a of the waterproof pressing edge ring and is not easy to separate. The upper leveling and slope-forming layer B, the lower waterproof layer C, and the protective layer D have the same slope, which is more convenient for construction. Figure 4 The waterproof pressing edge ring in [description] is a horizontal ring, which is also easy to implement in civil engineering construction.

[0020] The special double-wall drainage and anti-seepage lower water pipe fitting adopted by the method of the present invention has a simple structure, is easy to manufacture, and does not increase too much project cost. During construction, the civil engineering structure does not need to be modified, the construction method is simple, and conventional construction techniques can be used. The method of the present invention can also be used for the construction of the top surface of a building with a backfill layer. The method of the present invention has strong practicability, wide application, and good market prospects.

Claims

1. A construction method for preventing waterlogging leakage in the bathroom floor, characterized in that, The method is as follows: Step 1: First, drill a hole at the position of the downpipe on the reinforced concrete floor slab after the civil engineering of the bathroom is completed, and install a double-wall drainage and anti-seepage downpipe fitting in the hole. Alternatively, before pouring the reinforced concrete structural slab of the bathroom, pre-embed the double-wall drainage and anti-seepage downpipe fitting. The double-wall drainage and anti-seepage downpipe fitting includes a vertical inner pipe (1), an outer pipe (2) sleeved on the upper part outside the inner pipe and integrally connected to the inner pipe, a waterproof pressing edge ring (3) arranged on the outer edge of the bottom end of the outer pipe, and outer pipe drainage holes (2a) opened at different height positions on the periphery of the outer pipe. The top end of the outer pipe is hermetically connected to the inner pipe through a top plate (4), and the bottom end of the outer pipe is hermetically connected to the inner pipe through a bottom plate (5). The bottom plate slopes downward from the outer pipe to the inner pipe. An inner pipe drainage hole (1a) is opened at the bottom of the inner pipe located inside the bottom plate. The part of the double-wall drainage and anti-seepage downpipe fitting above the outer pipe is arranged above the reinforced concrete floor slab, and the downpipe continues to be connected below the reinforced concrete floor slab; Step 2: Use cement mortar to construct the lower leveling and slope-forming layer on the reinforced concrete floor slab; Step 3: Make the lower waterproof layer with waterproof materials on the lower leveling and slope-forming layer; Step 4: Lay a protective layer with cement mortar on the lower waterproof layer; Step 5: Backfill ceramsite or other backfill materials to form a backfill layer; Step 6: Lay a cement mortar cushion layer on the backfill layer; Step 7: Make the upper waterproof layer with waterproof materials on the cement mortar cushion layer.

2. The construction method for preventing waterlogging leakage in the bathroom floor according to claim 1, characterized in that, Before backfilling ceramsite or other backfill materials in Step 5 above, first set a wire mesh (7) around the outer pipe (2) of the double-wall drainage and anti-seepage downpipe fitting.

3. A construction method for preventing waterlogging and leakage in the bathroom floor according to claim 1, characterized in that Lay an upper leveling and slope-forming layer with cement mortar on the upper waterproof layer, and then lay a decorative layer on the upper leveling and slope-forming layer.

4. A construction method for preventing waterlogging and leakage in the bathroom floor according to claim 1 or 2 or 3, characterized in that, The waterproof pressing edge ring (3) of the double-wall drainage and anti-seepage downpipe fitting slopes upward outward at the same slope as the bottom plate (5).

5. A construction method for preventing waterlogging and leakage in the bathroom floor according to claim 1 or 2 or 3, characterized in that, The waterproof pressing edge ring (3) of the double-wall drainage and anti-seepage downpipe fitting is a horizontal pressing edge ring.

6. A construction method for preventing waterlogging and leakage in the bathroom floor according to claim 1 or 2 or 3, characterized in that, A water stop ring (6) is arranged around the lower part of the inner pipe (1) of the double-wall drainage and anti-seepage downpipe fitting.

7. A construction method for preventing waterlogging leakage in the bathroom floor according to claim 1 or 2 or 3, characterized in that, The aperture of the outer pipe drainage hole (2a) of the double-wall drainage and anti-seepage downpipe fitting is 1 - 5 mm.

8. A construction method for preventing water accumulation and leakage in the bathroom floor according to claim 1 or 2 or 3, characterized in that, The aperture of the inner pipe drainage hole (1a) of the double-wall drainage and anti-seepage downpipe fitting is 5 - 10 mm.

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