Construction process for integrated building toilet caisson secondary drainage

Abstract

The application belongs to the technical field of toilet caisson and relates to a construction process for secondary drainage of an integrated building toilet caisson. In order to solve the problem of toilet odor resistance, a side drain is arranged in the caisson, a water trap is arranged in the tube well, and the scheme for draining water accumulated in the caisson is used to solve the problem in practice. In the scheme, a hole one is made on the upper end surface of a membrane shell mold, a hole two is made on the side end surface, a drainage hose is inserted into a corrugated pipe to form a sleeve pipe passing through the hole one and the hole two, the part of the sleeve pipe in the membrane shell mold has a slope with a horizontal plane, the two sides of the corrugated pipe are sealed with foam sealant, the two ends of the sleeve pipe are sealed with pipe plugs, concrete is cast in the membrane shell mold and is cured and shaped, the membrane shell mold is removed to obtain the caisson, the excess sleeve pipe is cut off, the drainage joint is connected with the sleeve pipe by using waterproof sealant, and the caisson is transported to a construction site, so that the top end of a drainage collector is connected with the drainage hose. The scheme has good drainage effect and can reduce the waste of tube well space.

Description

Technical Field

[0001] This invention belongs to the field of bathroom recessed slab technology, and relates to a construction process for secondary drainage of bathroom recessed slabs in integrated buildings. Background Technology

[0002] Modular concrete integrated buildings use standard modules as basic units. The main body of the module is manufactured in the factory, along with the installation of bathroom fixtures, electromechanical pipelines, and integrated decoration and finishing. On-site, only the modules are assembled and the pipelines between the module units are connected. This is a new type of rapid construction method with advantages such as high degree of prefabrication integration, fast construction efficiency, and good construction quality. It is now widely used in the production of bathroom sump pits.

[0003] Residential bathrooms typically use in-floor drainage to minimize impact on residents with different property rights. This often involves a recessed slab drainage system. However, during bathroom use, water can accumulate in the recessed slab, causing backflow and odor. Currently, the common practice is to install side-drainage drains within the sump and water traps in the manhole to drain the water. However, this method presents the following problems in practice:

[0004] Firstly, due to the uneven thickness and slope of the side-drain floor drain itself, water cannot be discharged effectively and in a timely manner, resulting in poor drainage.

[0005] Secondly, when the bathroom drainage riser is installed indoors, the traditional practice requires the installation of a water trap in the pipe shaft, which wastes the space in the pipe shaft and makes it difficult to operate and process the water trap in a small space.

[0006] Thirdly, because the floor is lowered to the same level, the side drain requires extensive floor demolition for repairs, resulting in high maintenance costs and extensive repair work. Summary of the Invention

[0007] The purpose of this invention is to address the problems that arise in practice with the solution of installing a side drain in the sump and a water trap in the pipe well to drain water from the sump, which is used to prevent odor backflow in bathrooms. This invention provides a construction process for secondary drainage of sump in bathrooms of integrated buildings.

[0008] The objective of this invention is achieved as follows: a construction process for secondary drainage in a recessed sump of an integrated building bathroom, comprising the following steps:

[0009] Step 1: Make at least one hole 1 on the upper end face of the membrane shell mold, and make at least one hole 2 on the side end face of the membrane shell mold, with each hole 1 corresponding to one hole 2;

[0010] Step 2: Insert the drain hose into the corrugated pipe to form a sleeve. Each set of sleeves passes through one hole 1 and one hole 2. The part of the sleeve inside the membrane mold has a slope with respect to the horizontal plane.

[0011] Step 3: Seal the gaps between the corrugated pipe and hole one, and between the corrugated pipe and hole two, with foam sealant; seal both ends of the sleeve with pipe plugs;

[0012] Step 4: After pouring concrete into the membrane mold and curing it, remove the membrane mold to obtain the caisson.

[0013] Step 5: Remove the plugs at both ends of the sleeve and set them aside; use a cutting tool to cut off any excess sleeve outside the caisson;

[0014] Step 6: Apply waterproof sealant evenly to the outer wall of the drain connector inlet; connect the drain connector to the top of the sleeve, and insert the drain connector into the gap between the drain hose and the corrugated pipe;

[0015] Step 7: Backfill the sunken area according to the conventional sunken bathroom construction method, and place a non-woven fabric-wrapped pebble drainage structure within 100mm of the drainage joint inlet.

[0016] Step 8: Transport the caisson to the construction site and use pipe clamps to fix the drainage collector with water seal function to the lower part of the drainage hose; connect the top of the drainage collector to the drainage hose.

[0017] Furthermore, in step two, the drain hose is a De20 PB drain hose.

[0018] Furthermore, in step two, the slope of the horizontal pipe section of the casing to the horizontal plane is i = 0.026.

[0019] Furthermore, in step two, the sleeve is set inside the membrane mold by a bracket.

[0020] Furthermore, the pipe clamp in step seven includes a fixing clamp, a screw, a connecting plate, and an expansion bolt;

[0021] The caisson is used to install on the cast-in-place concrete floor slab where the bathroom is to be built. One end of the screw is integrally set with the connecting plate. The connecting plate is fixed to the side wall at the bottom of the cast-in-place concrete floor slab by expansion bolts. The fixing clamp is threaded to the other end of the screw. The fixing clamp is used to fix the drainage collector with water seal function.

[0022] Beneficial effects:

[0023] This application utilizes a sleeve composed of drainage hoses and corrugated pipes for pre-embedding before the processing of the bathroom sump, which is then integrated with the module casting for assembly construction, shortening the construction time. The use of corrugated pipes outside the drainage hoses facilitates later maintenance. Multiple sets of hole one and hole two can be set as needed, i.e., multiple drainage points, improving drainage efficiency. The drainage effect is significantly improved by setting multiple drainage outlets at the bottom of the sump. When the drainage hoses are in operation, they connect to a drainage collection device with a built-in water seal, effectively draining water accumulated in the sump and facilitating maintenance. The drainage collection device with a built-in water seal requires little installation space, is easy to install, and reduces wasted manhole space. Attached Figure Description

[0024] Figure 1 This is a floor plan for secondary drainage in the sunken sump of an integrated building bathroom.

[0025] Figure 2 Figure 1 BB view;

[0026] Figure 3 This is a schematic diagram of the sleeve;

[0027] Figure 4 yes Figure 3 The left view;

[0028] Figure 5 This is a cross-sectional view of the drain connector;

[0029] Figure 6 This is a top view of the drain connector;

[0030] Figure 7 This is a diagram of the pipe clamp;

[0031] Figure 8 This is a schematic diagram of a drainage collector;

[0032] Figure 9 yes Figure 8 A schematic diagram of direction AA;

[0033] Figure 10 yes Figure 8 A schematic diagram of the CC direction. Detailed Implementation

[0034] Specific Implementation Method 1: A construction process for secondary drainage of sunken sump in integrated building bathrooms, comprising the following steps:

[0035] Step 1: Make at least one hole 1 on the upper end face of the membrane shell mold, and make at least one hole 2 on the side end face of the membrane shell mold, with each hole 1 corresponding to one hole 2;

[0036] Step 2: Insert the drain hose 2 into the corrugated pipe 1 to form a sleeve. Each set of sleeves passes through one hole 1 and one hole 2. The part of the sleeve inside the membrane mold has a slope with the horizontal plane.

[0037] Step 3: Seal the gaps between corrugated pipe 1 and hole 1, and between corrugated pipe 1 and hole 2 with foam sealant; seal both ends of the sleeve with pipe plugs;

[0038] Step 4: After pouring concrete into the membrane mold and curing it, remove the membrane mold to obtain the caisson 9;

[0039] Step 5: Remove the plugs at both ends of the sleeve and set them aside; use a cutting tool to cut off the excess sleeve on the outside of the caisson 9;

[0040] Step 6: Apply waterproof sealant evenly to the outer wall of the drain connector 3 socket; connect the drain connector 3 to the top of the sleeve, and insert the drain connector 3 into the gap between the drain hose 2 and the corrugated pipe 1;

[0041] Step 7: Backfill the sunken box 9 according to the conventional sunken toilet construction method, and place a non-woven fabric-wrapped pebble hydrophobic structure within 100mm of the inlet of the drainage joint 3.

[0042] Step 8: Transport the caisson 9 to the construction site, and use pipe clamps to fix the drainage collector 8 with water seal function to the lower part of the drainage hose 2; connect the top of the drainage collector 8 to the drainage hose 2. In this embodiment:

[0043] In step one, holes one and two are made on the side end face of the membrane mold. The membrane mold is used for pouring concrete, and holes one and two are used for pre-embedding drainage hoses.

[0044] In step two, the drain hose is inserted into the corrugated pipe to form a sleeve; the drain hose can move in the corrugated pipe; the part of the sleeve inside the membrane mold has a slope with the horizontal plane, which is a suitable slope for drainage;

[0045] In step three, the gaps between the corrugated pipe and hole one, and between the corrugated pipe and hole two, are sealed with foam sealant. After the corrugated pipe is fixed, the drain hose can be pulled out of the corrugated pipe, and the position of the drain hose can be adjusted and replaced. The two ends of the sleeve are sealed with pipe plugs to prevent impurities from entering the drain hose and the gap between the drain hose and the corrugated pipe in subsequent steps, ensuring that the drain hose can be pulled out of the corrugated pipe later and that the inside of the drain hose is unobstructed.

[0046] In step four, after pouring concrete into the membrane mold and curing it, the membrane mold is removed to obtain the caisson. The specific implementation method of this process is the same as the conventional method of pouring concrete into the mold, curing it, and removing the membrane.

[0047] In step five, remove the plugs at both ends of the sleeve for later use. The plugs can be recycled. Use scissors, knives or special plumbing tools to cut off the excess sleeve outside the caisson.

[0048] In step six, apply waterproof sealant evenly to the outer wall of the drain connector socket; connect the drain connector to the top of the sleeve, and insert the drain connector into the gap between the drain hose and the corrugated pipe; with the drain connector set up in this way, the connection is stable, the sealant on the outer wall of the drain connector connects with the inner wall of the corrugated pipe, the drain hose is not fixed, and it can be replaced later.

[0049] Step seven, the standard backfilling method for the sunken bathroom, involves the following layers from bottom to top: reinforced concrete floor slab, 1.5mm thick polyurethane waterproof coating, 1.5mm thick M20 polymer cement mortar protective layer / slope-forming layer, 1:3:6 cement-cement aggregate concrete filling layer, 1.5mm thick cement mortar surface layer, 2mm thick polymer cement waterproof coating (Type II), 1.5mm thick cement mortar protective layer / slope-forming layer, 8mm thick polymer cement mortar, 10mm thick anti-slip bricks, and dry cement mortar grouting. The thickness of the backfill layer is determined based on the height of the sunken area. The non-woven fabric-wrapped pebble drainage layer protects the drainage joints from blockage by impurities. Specifically, the non-woven fabric-wrapped pebble drainage layer is located above the 1.5mm thick M20 polymer cement mortar protective layer and is laid around the drainage joints.

[0050] In step eight, the caisson is transported to the construction site, and the water seal drainage collector is fixed to the lower side wall of the drainage hose using pipe clamps. The top of the drainage collector is connected to the drainage hose. If multiple sets of sleeves are installed, the drainage collector will drain the water from multiple sets of sleeves to one place. The drainage collector is used for the collection and discharge of drainage from the entire caisson. The drainage collector is a drainage collector with a water seal function. The drainage collector with a built-in water seal has a small installation space, is easy to install, and can reduce the waste of manhole space.

[0051] Specific Implementation Method 2: A construction process for secondary drainage of the sunken sump of an integrated building bathroom, wherein the drainage hose 2 in step 2 is a De20 PB drainage hose 2.

[0052] Other implementation methods are the same as those in Specific Implementation Method 1.

[0053] Specific Implementation Method 3: A construction process for secondary drainage of a sunken sump in an integrated building bathroom, characterized in that: the slope of the horizontal pipe section of the sleeve to the horizontal plane in step two is i = 0.026.

[0054] In this embodiment: the above slope meets the drainage requirements.

[0055] Other implementation methods are the same as those in Specific Implementation Method 1.

[0056] Specific Implementation Method 4: A construction process for secondary drainage of a sunken sump in an integrated building bathroom, wherein in step two, the sleeve is supported inside the membrane mold by a bracket.

[0057] In this embodiment, the sleeve is supported inside the membrane mold by a bracket. The sleeve is relatively stable by the bracket, which avoids the sleeve slope from shaking in subsequent steps.

[0058] Other implementation methods are the same as those in Specific Implementation Method 1.

[0059] Specific implementation method five: A construction process for secondary drainage of the sunken sump of an integrated building bathroom, wherein in step six, the drain connector 3 is inserted into the gap between the drain hose 2 and the corrugated pipe 1, and the bottom surface of the drain outlet of the drain connector 3 is flush with the finished concrete surface of the bottom plate of the sunken sump 9.

[0060] In this embodiment, the bottom surface of the drainage outlet of the drainage connector is flush with the finished concrete surface of the caisson bottom plate. With this setting, after backfilling, the side and top drainage outlets of the drainage connector will fit tightly with the slope layer, resulting in better drainage.

[0061] Other implementation methods are the same as those in Specific Implementation Method 1.

[0062] Specific implementation method six: A construction process for secondary drainage of the sunken sump of an integrated building bathroom, wherein the pipe clamp in step seven includes a fixing clamp 4, a screw 5, a connecting plate 6, and an expansion screw 7;

[0063] The caisson 9 is used to install on the cast-in-place concrete slab 10 where the bathroom is to be built. One end of the screw rod 5 is integrally set with the connecting plate 6. The connecting plate 6 is fixed to the side wall at the bottom of the cast-in-place concrete slab 10 by expansion screws 7. The fixing clamp 4 is threadedly connected to the other end of the screw rod 5. The fixing clamp 4 is used to fix the drainage collector 8 with water seal function.

[0064] In this embodiment: the top of the drain collector has multiple interfaces, which are integrated into the grate. The interfaces are used to connect to the outlet end of the drain hose. The grate is detachably connected to the main body of the drain collector below. The side of the main body of the drain collector is provided with a drain outlet for connecting to the main drain pipe in the building. The side of the main body of the drain collector is also provided with an anti-overflow component ABS. The top of the inside of the main body of the drain collector is provided with a water guide pipe. When water enters the drain collector, the water passes through the interfaces, the water guide pipe, the bottom surface of the drain collector, and the drain outlet in sequence. A layer of water is left on the bottom surface of the inside of the drain collector, which forms a water seal above the bottom surface of the water guide pipe to prevent odor from entering at the drain outlet.

[0065] Other implementation methods are the same as those in Specific Implementation Method 1.

[0066] Example:

[0067] Before pouring the base slab of the modular integrated building bathroom sump, a De50 hole is drilled at the designated location in the membrane mold. Two De20 PB drainage hoses with their own sleeves are then concealed in the base sump at a slope of 0.026, with the number of hoses adjustable according to the sump area. The drainage hoses are then fixed to the reinforcing steel bars with steel wire. The drainage end of the hose extends out of the finished surface of the base sump mold, while the other end is positioned towards the drainage collection device. A pre-reserved joint extends 200mm out of the membrane mold, which can be adjusted according to the actual situation. The gap between the sleeve and the mold opening is sealed with foam sealant, and both ends are plugged with pipe. After the modular building is poured and cured, the mold template is removed, and the drain end pipe plug inside the caisson is removed and reused. The excess pipe inside the caisson is cut off along the finished surface with a cutting tool. The PB drain hose is inserted into the special drain connector, and the interface gap is sealed with waterproof sealant. The special drain port is flush with the finished surface of the concrete of the caisson bottom plate. After being transported to the site, the drainage collection device is fixed to the building wall with special pipe clamps. Then the PB drain hose connector is connected to the upper interface of the drainage collector. The lower part of the drainage collector has a built-in water seal. The side De50 UPVC standard socket is chemically bonded to the drainage riser using De50 standard drainage UPVC pipe.

Claims

1. A construction process for secondary drainage of a sunken sump in an integrated building bathroom, characterized in that: It includes the following steps: Step 1: Make at least one hole 1 on the upper end face of the membrane shell mold, and make at least one hole 2 on the side end face of the membrane shell mold, with each hole 1 corresponding to one hole 2; Step 2: Insert the drain hose (2) into the corrugated pipe (1) to form a sleeve. Each set of sleeves passes through one hole and one hole. The part of the sleeve inside the membrane mold has a slope with the horizontal plane. Step 3: Seal the gaps between the corrugated pipe (1) and hole one, and between the corrugated pipe (1) and hole two with foam sealant; seal both ends of the sleeve with pipe plugs; Step 4: After pouring concrete into the membrane mold and curing it, remove the membrane mold to obtain the caisson (9). Step 5: Remove the plugs at both ends of the sleeve for later use; use a cutting tool to cut off the excess sleeve outside the caisson (9); Step 6: Apply waterproof sealant evenly to the outer wall of the drain connector (3) socket; connect the drain connector (3) to the top of the sleeve, and insert the drain connector (3) into the gap between the drain hose (2) and the corrugated pipe (1); Step 7: Backfill the caisson (9) according to the conventional caisson toilet construction method, and place a non-woven fabric-wrapped pebble hydrophobic layer within 100mm of the inlet of the drainage joint (3); Step 8: Transport the caisson (9) to the construction site and use pipe clamps to fix the drainage collector (8) with water seal function to the lower part of the drainage hose (2); make the top of the drainage collector (8) connected to the drainage hose (2), and when the drainage hose (2) drains water, it is connected to the drainage collector (8) with water seal. The pipe clamp in step eight includes a fixing clamp (4), a screw (5), a connecting plate (6), and an expansion screw (7); The caisson (9) is used to install on the cast-in-place concrete floor slab (10) where the bathroom is to be built. One end of the screw (5) is integrally set with the connecting plate (6). The connecting plate (6) is fixed to the side wall at the bottom of the cast-in-place concrete floor slab (10) by expansion screws (7). The fixing clamp (4) is threadedly connected to the other end of the screw (5). The fixing clamp (4) is used to fix the drainage collector (8) with water seal function.

2. The construction process for secondary drainage of a sunken sump in an integrated building bathroom according to claim 1, characterized in that: In step two, the drain hose (2) is a De20 PB drain hose (2).

3. The construction process for secondary drainage of a sunken sump in an integrated building bathroom according to claim 1, characterized in that: In step two, the slope of the horizontal pipe section of the casing relative to the horizontal plane is i = 0.

026.

4. The construction process for secondary drainage of a sunken sump in an integrated building bathroom according to claim 1, characterized in that: In step two, the sleeve is supported inside the membrane mold by a bracket.

5. The construction process for secondary drainage of a sunken sump in an integrated building bathroom according to claim 1, characterized in that: In step seven, the drain connector (3) is inserted into the gap between the drain hose (2) and the corrugated pipe (1), and the bottom surface of the drain outlet of the drain connector (3) is flush with the finished concrete surface of the bottom plate of the caisson (9).

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