Sunken toilet backfill layer drainage technology

Abstract

The invention discloses a sunken toilet backfill layer drainage technology which is characterized in that a side wall floor drain for collecting leaked water of a sunken toilet backfill layer is arranged on the sunken toilet backfill layer, and the side wall floor drain is connected to a main floor drain drainage pipe of a lower-layer toilet through a drainage water pipe; therefore, the drainage water pipes of the upper-layer toilets are connected with the main floor drain drainage pipes of the lower-layer toilets in a one-to-one mode, and the backfill layer leakage drainage system of the sinking toilets of the whole building is formed. By means of the design of the drainage water pipe with low construction cost, on the premise that no new space is occupied, whether water stains exist in the backfill layer of the sunken toilet or not can be observed through the drainage water pipe at any time, the leakage condition of the backfill layer is judged, and timely maintenance is facilitated; before the drainage water pipe is connected into the lower-layer toilet floor drain trap, drainage and water seal of the lower-layer toilet floor drain are not affected, maintenance is not needed, odor of a drainage system can be completely prevented from entering a backfilling layer, the comfort of residents is improved, and the physical health of the residents is protected.

Description

Technical Field

[0001] The invention relates to the technical field of waterproofing of building engineering toilets, in particular to a drainage technology for a backfill layer of a sunken toilet. Background Art

[0002] Compared with traditional bathrooms, the characteristics of sunken bathrooms make them more prone to leakage and odor problems. One is leakage of the drainage pipes installed in the backfill layer, and the other is leakage of the bathroom floor (including the casing of the sanitary ware drainage pipe). For traditional different-layer drainage, leakage will fall on the ceiling of the lower bathroom, which is easy to be discovered and repaired in time. However, the pipes of the sunken bathroom are in the backfill layer. In addition to the bathroom floor, there is a layer of structural board under the backfill layer. If the bathroom leaks, it will fall on the lower structural board. Since the board is waterproof, the leakage will not be discovered in the backfill layer for a long time, but there will be a bad smell, affecting the owner's living comfort and health.

[0003] In order to solve this problem, there are also many design solutions in the prior art. One of them is to open a small hole at the drainage riser attached to the lower structural plate, so that the seepage water in the backfill layer can flow into the drainage pipe through the small hole; there is also a more common practice of making a secondary floor drain in the backfill layer, and the drainage of the secondary floor drain is connected to the drainage riser. For example, the patent publication number is CN108643288A, a sunken toilet secondary drainage waterproof system, including a caisson and a drainage riser, the side wall of the drainage riser is connected to a drain pipe buried in the caisson, and the top surface of the bottom plate and the inner wall of the caisson are provided with a caisson waterproof layer.

[0004] Although these methods can solve the problem of water accumulation in the backfill layer, they bring another problem. Since there is odor in the drainage pipe itself, the odor will return to the backfill layer through the small holes on the riser or the floor drain, and eventually spread to the bathroom, forming a return odor. Even if the floor drain is equipped with a water seal or even a deep water seal, it will not help, because water seepage is a low probability and long-term event. If the water does not continue to leak, the water seal will dry up. The final result is that the drainage pipe is connected to the indoor environment, and the return odor is inevitable.

[0005] There is also a device and method for preventing water accumulation in an indoor sunken toilet, such as the patent publication number CN114892772A, which includes a drainage pipe and a floor. A backfill layer is laid on the top of the floor. The drainage pipe runs through the floor and the backfill layer. The outer side of the drainage pipe is connected to a curved pipe, and the left end of the curved pipe is located in the backfill layer. Support plates and fixed rods are fixedly installed on the inner walls of both sides of the drainage pipe. A guide cylinder is fixedly installed on the top of the support plate, and a guide plate is slidably installed in the guide cylinder. A guide column is fixedly connected to the top of the guide plate. The impact force of the water in the drainage pipe drives the baffle plate to move downward, and the water in the backfill layer is sucked away under the siphon effect. This structure seems feasible, but it has no practical application value. For example, the setting of the curved pipe makes it impossible to take out the entire device for cleaning or repair. If it is damaged, it will form a floor drain blockage. Moreover, such a small siphon force is not enough to suck away the leaking water in the backfill layer. Summary of the invention

[0006] The purpose of the present invention is to solve the above-mentioned problems and to provide a drainage technology for the backfill layer of a sunken toilet, which can not only solve the hidden danger of odor return in the backfill layer, but also observe the water leakage of the sunken toilet. It has the characteristics of low equipment cost, no maintenance, no additional space occupation, and easy observation.

[0007] The above-mentioned technical problems of the present invention are mainly solved through the following technical solutions: a drainage technology for the backfill layer of a sunken toilet, including a floor structure plate, a sunken toilet backfill layer, and a toilet floor, characterized in that: a side wall floor drain for collecting leakage water of the sunken toilet backfill layer is arranged in the sunken toilet backfill layer, and the side wall floor drain is connected to the main floor drain pipe of the lower toilet through a drainage pipe; that is, the drainage and water seal replenishment of the upper toilet backfill layer both use the main floor drain of the lower toilet, so that the drainage pipe of the upper toilet is connected to the main floor drain pipe of the lower toilet one by one, forming a leakage drainage system for the backfill layer of the sunken toilet in the entire building.

[0008] In the aforementioned sunken toilet backfill layer drainage technology, preferably, the drainage pipe is a transparent pipe or a pipe in which the water stains inside the pipe can be partially observed.

[0009] In the aforementioned backfill layer drainage technology for the sunken toilet, preferably, a water trap is provided in the main floor drain pipe of the toilet, and the drainage pipe connected from the upper layer is connected after the main floor drain and before the water trap.

[0010] In the aforementioned sunken toilet backfill layer drainage technology, preferably, the leakage drainage pipe runs through a drainage pipe well or an outdoor drainage header area.

[0011] In the aforementioned sunken toilet backfill layer drainage technology, preferably, the drainage pipe is provided with a water stop wing ring on the wall portion passing through the toilet backfill layer to the outdoor.

[0012] In the aforementioned sunken toilet backfill layer drainage technology, preferably, the toilet backfill layer is made of permeable paving material.

[0013] In the aforementioned drainage technology for the backfill layer of the sunken toilet, preferably, the backfill layer of the sunken toilet is sloped toward the side wall floor drain based on the floor structure plate.

[0014] In the aforementioned sunken toilet backfill layer drainage technology, preferably, the drainage pipe well is made of corrosion-resistant and transparent material at the place where the drainage pipe passes or all of it.

[0015] In the aforementioned drainage technology for the backfill layer of the sunken toilet, preferably, an inspection opening is provided on the wall of the sunken toilet facing the drainage well.

[0016] This technical solution uses side wall floor drains, transparent drainage pipes, and water traps in the lower bathroom floor drains to form a set of drainage pipe systems for the backfill layer of the sunken toilet. The side wall floor drain is set at the bottom of the backfill layer of the sunken toilet at the location of the structural plate facing the drainage pipe well. Since the side drainage floor drain is not provided with a water trap, and the backfill material is made of paving materials with good water permeability, and the structural plate is sloped toward the side wall floor drain, it is easy to concentrate the water leaking from the toilet on the side wall floor drain and drain downward.

[0017] In this scheme, the leakage pipes are arranged in the drainage pipe shaft or the outdoor drainage collection pipe area. Since water seepage is a low-probability event, the diameter of the leakage pipe is small. Under the premise of meeting the technical specifications for drainage on the same floor, no additional space is occupied. In addition, corrosion-resistant transparent pipes are used in the drainage pipe shaft to facilitate observation of leakage in the backfill layer.

[0018] The drainage pipe of this device is connected to the floor drain of the bathroom on the lower floor after being led out from the bathroom on this floor. Since the access point is located before the water trap, the water seal of the water trap can be used to block the odor of the drainage system from entering the backfill layer, and the water seal of the floor drain of the bathroom on the lower floor can also be continuously replenished by the floor drain, and the water seal will not dry up, thereby avoiding odor. At the same time, the side wall floor drain is a side wall type, set close to the drainage pipe well, which also avoids the pipe passing through the space of the lower-level residents and reduces the risk of water leakage.

[0019] Compared with the prior art, the beneficial effects of the present invention are: with the design of the leakage drainage pipe at low construction cost, without occupying new space, it is possible to observe whether there is water stain on the backfill layer of the sunken toilet at any time through the leakage drainage pipe, judge the leakage of the backfill layer, and facilitate timely maintenance; the leakage drainage pipe is connected to the water trap of the floor drain of the lower toilet, which neither affects the drainage and water seal of the floor drain of the lower toilet nor requires maintenance, and can completely block the odor of the drainage system from entering the backfill layer, thereby improving the comfort of the residents and protecting the health of the residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 yes Figure 1 A partial enlarged structural diagram of the central main floor drain, water trap and side wall floor drain.

[0022] In the figure: 1-side wall floor drain; 2-drain pipe; 3-main floor drain; 4-trap; 5-water stop wing ring; 6-bathroom backfill layer; 7-bathroom floor; 8-structural board; 9-inspection port; 10-upper bathroom; 11-lower bathroom; 12-drainage pipe shaft. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0024] This embodiment is a drainage technology for the backfill layer of a sunken toilet, such as Figure 1 , Figure 2 As shown, it is applied to the most common building type - multi-story and high-rise residential projects, taking the adjacent upper bathroom 10 and lower bathroom 11 as an example, including a waterproofed floor structural plate 8 below the backfill layer, and a sunken bathroom backfill layer 6 and a bathroom floor 7 on the structural plate 8.

[0025] The bathroom backfill layer 6 is made of permeable paving materials with good permeability and non-water absorption, such as clean coal ash slag, expanded clay, permeable concrete, permeable bricks, ecological permeable concrete, large-void asphalt mixture, etc., to avoid sewage accumulation; the bathroom floor 7 uses red bricks and steel bars to overhead the backfill material, and then pour cement mortar; the bathroom floor 7, the bathroom backfill layer 6 and the structural plate 8 under the backfill layer together form the civil engineering structure of the sunken bathroom.

[0026] A side wall floor drain 1 is set in the backfill layer 6 of the sunken toilet to collect the water leaking from the backfill layer of the sunken toilet. The side wall floor drain 1 is arranged on the side wall facing the drainage pipe well 12 or the outdoor drainage manifold area. Note that no water trap is set. During construction, the backfill layer 6 of the sunken toilet is sloped toward the side wall floor drain 1 based on the floor structure plate 8. The side wall floor drain 1 is connected to the main floor drain 3 drainage pipe of the lower toilet 11 through a drainage pipe 2. Specifically, a water trap 4 is set in the drainage pipe of the main floor drain 3 of the toilet, which replaces the water trap specially set in the traditional drainage pipe. The drainage pipe 2 connected from the upper toilet 10 is connected after the main floor drain 3 of the lower toilet 11 and before the water trap 4. A water stop wing ring 5 is set on the wall part where the drainage pipe 2 passes through the toilet backfill layer 6 to the outdoor area as a leakage prevention measure for the drainage system.

[0027] Therefore, the floor drain of the lower bathroom 11 is used for drainage and water seal replenishment of the bathroom backfill layer 6, that is, the drainage pipe 2 of the upper bathroom 10 is connected one by one with the main floor drain 3 of the lower bathroom 11, thus forming a leakage drainage system for the backfill layer of the sunken bathroom in the entire building.

[0028] Furthermore, the drainage pipe 2 is made of transparent materials such as organic glass, or the entire drainage pipe 2 is a transparent pipe, or a transparent pipe in which water stains in the pipe can be observed partially. In conjunction with this, the drainage pipe well 12 is made of corrosion-resistant and transparent materials at or throughout the drainage pipe 2 for easy observation. At the same time, a concealed inspection port 9 is provided on the wall of the sinking toilet toward the drainage pipe well 12.

[0029] Working principle: When the floor 7 of the sunken toilet leaks or the pipe in the toilet backfill layer 6 leaks, the sewage will enter the toilet backfill layer 6. The toilet backfill layer 6 has good water permeability and non-water absorption. The sewage flows to the structural plate 8 below the backfill layer and flows into the side wall floor drain 1 along the slope, through the transparent drainage pipe 2, and flows into the main floor drain 3 and the water trap 4 of the lower toilet 11. The sewage is discharged through the drainage pipe of the floor drain 3 of the lower toilet 11, and the odor in the sewage pipe is blocked by the water seal in the water trap 4 behind the main floor drain 3 of the lower toilet 11, so that the leakage water of the sunken toilet backfill layer 6 can be discharged smoothly and avoid odor. The leakage situation can be observed through the transparent drainage pipe 2 and repaired in time.

[0030] The above embodiments are explanations of the present invention, not limitations of the present invention. Although the present invention is described in conjunction with the preferred embodiments, it should be understood that the present invention is not limited to the preferred embodiments. Those skilled in the art can make various equivalent modifications and substitutions to the technical solutions of the present invention based on the teachings of the present invention. Therefore, the scope of the present invention should be limited by the claims, and all those equivalent modifications and substitutions belong to the protection scope of the technical solutions of the present invention.

Claims

1. A drainage technology for a sunken toilet backfill layer, comprising a floor structure plate (8), a sunken toilet backfill layer (6), and a toilet floor (7), characterized in that: A side wall floor drain (1) is arranged on the backfill layer of the sunken toilet to collect water leakage from the backfill layer of the sunken toilet. The side wall floor drain is connected to the main floor drain (3) drainage pipe of the lower toilet (11) through a drainage pipe (2); that is, drainage and water seal replenishment of the backfill layer of the upper toilet (10) are both done by using the main floor drain of the lower toilet, so that the drainage pipe (2) of the upper toilet is connected to the main floor drain drainage pipe of the lower toilet one by one, thus forming a drainage system for the backfill layer leakage of the sunken toilet of the entire building.

2. The backfill layer drainage technology for sunken toilets according to claim 1 is characterized in that: The drainage pipe (2) is a transparent pipe or a pipe through which water stains inside the pipe can be partially observed.

3. The backfill layer drainage technology for sunken toilets according to claim 1 is characterized in that: A water trap (4) is arranged in the drainage pipe of the main floor drain (3) of the bathroom, and the drainage pipe (2) connected from the upper layer is connected after the main floor drain and before the water trap.

4. The backfill layer drainage technology for sunken toilets according to claim 1 is characterized in that: The drainage pipe (2) is routed through a drainage well (12) or an outdoor drainage header area.

5. The backfill layer drainage technology for sunken toilets according to claim 1 is characterized in that: The drainage pipe (2) is provided with a water stop wing ring (5) at the wall portion extending from the backfill layer (6) of the bathroom to the outside.

6. The backfill drainage technology for sunken toilets according to claim 1, 4 or 5, characterized in that: The toilet backfill layer (6) is made of permeable paving material.

7. The backfill layer drainage technology for sunken toilets according to claim 6 is characterized in that: The backfill layer (6) of the sunken toilet is sloped toward the side wall floor drain (1) based on the floor structure plate (8).

8. The backfill layer drainage technology for sunken toilets according to claim 4 is characterized in that: The drainage pipe well (12) is made of corrosion-resistant and transparent material at or throughout the place where the drainage pipe (2) passes.

9. The backfill layer drainage technology for sunken toilets according to claim 4 or 8, characterized in that: An inspection opening (9) is provided on the wall of the sunken toilet facing the drainage well (12).

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