CN112031090A

CN112031090A - Board drainage system does not fall for building spring layer

Info

Publication number: CN112031090A
Application number: CN202010443831.1A
Authority: CN
Inventors: 郑术友; 林云青; 黄陈磊; 杨明龙; 何谦
Original assignee: Kangtai Plastic Science and Technology Group Co Ltd
Current assignee: Kangtai Plastic Science and Technology Group Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-12-04
Anticipated expiration: 2040-05-22
Also published as: CN112031090B

Abstract

The invention provides a board-falling-free drainage system for a skip floor of a building, which comprises a first-floor drainage system and a second-floor drainage system, wherein the first-floor drainage system comprises a first-floor drainage pipe assembly, and the upper part, the lateral part and the lower part of the first-floor drainage pipe assembly are respectively communicated with an upper-floor main drainage pipe, a first-floor closestool drainage pipe and a first lower-floor main drainage pipe; the secondary drainage system comprises a horizontal pipe drainage assembly, and a secondary drainage pipe assembly and a water seal assembly which are respectively communicated with the horizontal pipe drainage assembly and are positioned on two sides of the horizontal pipe drainage assembly, wherein the upper part, the lateral part and the lower part of the secondary drainage pipe assembly are respectively communicated with a first lower layer main drainage pipe, a secondary closestool drainage pipe and the horizontal pipe drainage assembly, and the horizontal pipe drainage assembly is communicated with a second lower layer main drainage pipe; the interior of the horizontal pipe drainage component is of a flat cavity structure, and the bottom surface of the cavity structure is obliquely arranged. From this, through adopting the horizontal pipe drainage assembly who has flat cavity structures, occupation space is little, need not reduce floor layer and also can realize the drainage.

Description

Board drainage system does not fall for building spring layer

Technical Field

The invention relates to the field of building drainage systems, in particular to a drainage system without lowering a plate for building jump floors.

Background

The development process of the building drainage system is roughly divided into the following two stages:

referring to fig. 1, the building drainage system shown in fig. 1 is a first generation building drainage system, and includes a first connection pipe 101 connected to a floor drain, a second connection pipe 201 connected to a wash stand, and a third connection pipe 301 connected to a toilet, where the first connection pipe 101, the second connection pipe 201, and the third connection pipe 301 are all disposed through a floor 401. The waste water in the first connection pipe 101, the waste water in the second connection pipe 201 and the sewage in the third connection pipe 301 are introduced into the confluence vertical pipe 601 through the header pipe 501 and discharged. Because first connecting pipe 101, second connecting pipe 201 and third connecting pipe 301 all run through floor 401 and set up, the first generation building drainage system invades the space of lower floor seriously, the noise is big during the drainage, the pipeline overhauls the difficulty and the pipeline can exert an influence to the resident family of lower floor if the seepage takes place.

Referring to fig. 2, the building drainage system shown in fig. 2 is a second generation building drainage system, i.e., a flooring grade drainage system. Wherein, a first connecting pipe 101 connected with the floor drain, a second connecting pipe 201 connected with the wash platform and a third connecting pipe 301 connected with the closestool are arranged above a floor 401, and a cushion layer 701 is formed above the floor 401. Waste water in the first connection pipe 101, waste water in the second connection pipe 201 and waste water in the third connection pipe 301 are introduced into the confluence vertical pipe 601 through the header pipe 501 and discharged. The first connection pipe 101, the second connection pipe 201, the third connection pipe 301, and the manifold 501 are disposed in the blanket 701. Although the second generation building drainage system solves the problem that the leakage of the first generation building drainage system affects the lower-layer households, when the second generation building drainage system is used, the height of the floor 401 needs to be reduced at the pipeline installation position, the space of the lower-layer households is still occupied, the water accumulation phenomenon easily occurs in a cushion layer, and the pipeline is difficult to overhaul and inconvenient to construct.

Disclosure of Invention

The invention aims to provide a drainage system without lowering floor for building jump floors, which does not need to lower floor slabs or reduce the height of the floor slabs and can realize a stable drainage function.

In order to achieve the aim, the invention discloses a non-falling plate drainage system for a skip floor of a building, which comprises a first-floor drainage system and a second-floor drainage system, wherein the first-floor drainage system comprises a first-floor drainage pipe assembly and a first-floor drain blow-off pipe, and the upper part, the lateral part and the lower part of the first-floor drainage pipe assembly are respectively communicated with an upper-floor main drainage pipe, a first-floor closestool blow-off pipe and a first lower-floor main drainage pipe;

the secondary drainage system comprises a transverse pipe drainage assembly, and a secondary drainage pipe assembly and a water seal assembly which are respectively communicated with the transverse pipe drainage assembly and are positioned on two sides of the transverse pipe drainage assembly, wherein the upper part, the side part and the lower part of the secondary drainage pipe assembly are respectively communicated with a first lower layer main drainage pipe, a secondary closestool drainage pipe and the transverse pipe drainage assembly, and the transverse pipe drainage assembly is communicated with a second lower layer main drainage pipe;

the interior of the horizontal pipe drainage assembly is of a flat cavity structure, and the bottom surface of the cavity structure is obliquely arranged.

Further, the first-layer water drainage pipe assembly comprises a first-layer rotational flow tee joint, and the first-layer rotational flow tee joint comprises a first-layer first water inlet pipe and a first-layer second water inlet pipe which is connected with the side wall of the first-layer first water inlet pipe and is internally communicated with the first-layer first water inlet pipe; the upper part of the first-layer first water inlet pipe is communicated with the upper-layer main drainage pipeline, the lower part of the first-layer first water inlet pipe is communicated with the first lower-layer main drainage pipeline, and the first-layer second water inlet pipe is communicated with the first-layer toilet drainage pipe;

the inner edge of the first layer of second water inlet pipe is tangent to the inner edge of the first layer of first water inlet pipe;

the first layer of pipe wall cavity with the volume expanded is arranged at the communication position of the first layer of second water inlet pipe and the first layer of first water inlet pipe.

Furthermore, the first layer of the first water inlet pipe is of a funnel-shaped structure with a wide upper part and a narrow lower part.

Further, still include first floor baffle, first floor baffle sets up the intercommunication department of first floor second inlet tube and first floor first inlet tube.

Further, still include first layer stable pressure membrane, first layer stable pressure membrane sets up the intercommunication department of first layer second inlet tube and first layer first inlet tube.

Further, the first layer voltage stabilizing film is made of flexible materials.

Further, first layer first inlet tube and first layer second inlet tube integrative injection moulding.

Further, the upper end of the first layer of first water inlet pipe is provided with a first layer of pipe cover, the first layer of pipe cover is provided with a first layer of pipe interface, and the first layer of pipe interface is respectively communicated with the first layer of first water inlet pipe and the upper layer of main drainage pipeline.

The lower end of the first-layer expansion joint is inserted into the first-layer pipe joint and communicated with the first-layer pipe joint; the upper end of the first-layer expansion joint is communicated with an upper-layer main drainage pipeline; the inner wall of the upper end of the first-layer expansion joint is provided with a first-layer sealing ring, and the first-layer sealing ring is abutted to the outer wall of the upper-layer main drainage pipeline.

Further, the lower extreme of first floor first inlet tube is equipped with first floor first riser, first floor first riser is located between first floor first inlet tube and the first lower floor's main drainage pipe, and inside is linked together.

Further, the first floor drain blow-off pipe is communicated with the first floor dry area drain, the first floor wet area drain and the first floor washbasin blow-off pipe.

Furthermore, the height of one side of the cavity structure close to the water seal assembly is higher than that of one side close to the secondary drainage pipe assembly.

Further, the horizontal pipe drainage assembly comprises a first assembly part and a second assembly part, and the first assembly part and the second assembly part are closed to form the cavity structure; the first assembly part and the second assembly part are of an integrated structure.

Furthermore, a first sub-layer vertical pipe interface close to one side of the sub-layer drainage pipe assembly and a waste water pipe interface close to one side of the water seal assembly are arranged on the first assembly part; the second assembly part is provided with a second vertical pipe opposite to the sub-layer first vertical pipe interface and a water storage part opposite to the waste water pipe interface, and the sub-layer first vertical pipe interface, the waste water pipe interface, the second vertical pipe and the water storage part are all communicated with the cavity structure;

and the second vertical pipe is communicated with the second lower-layer main drainage pipeline.

Furthermore, the sublayer drainage pipe assembly comprises a sublayer rotational flow tee joint, the sublayer rotational flow tee joint comprises a sublayer first water inlet pipe and a sublayer second water inlet pipe which is connected with the side wall of the sublayer first water inlet pipe and is internally communicated with the sublayer first water inlet pipe, the upper part of the sublayer first water inlet pipe is communicated with the first sublayer main drainage pipe, the sublayer second water inlet pipe is communicated with the sublayer closestool drainage pipe, a sublayer first vertical pipe is arranged at the lower part of the sublayer first water inlet pipe, and the sublayer first vertical pipe is communicated with a sublayer first vertical pipe connector; the inner edge of the second water inlet pipe of the sublayer is tangent to the inner edge of the first water inlet pipe of the sublayer, and the communication position of the second water inlet pipe of the sublayer and the first water inlet pipe of the sublayer is a sublayer pipe wall cavity with an expanded volume.

Further, the water seal subassembly include the floor drain and with the waste pipe of being connected can be dismantled to the floor drain, wherein:

the waste water pipe is communicated with the waste water pipe interface;

the floor drain comprises a floor drain cover arranged on the upper side of the waste water pipe and a connecting pipe arranged on the lower side of the waste water pipe, and the floor drain cover and the connecting pipe are both detachably connected with the waste water pipe;

the connecting pipe stretches into the interior of the cavity of the water storage part after being connected with the waste water pipe, and gaps are reserved between the outer wall of the connecting pipe and the inner wall of the water storage part.

Further, the floor drain cover includes grate, first filter screen and installed part, wherein:

the double-edged fine-toothed comb and the first filter screen are detachably connected to the upper side of the mounting part, and the double-edged fine-toothed comb is positioned above the first filter screen;

the downside of installed part is equipped with the regulating part, the installed part passes through the regulating part with the waste pipe can be dismantled and be connected.

Further, still include the second filter screen, the second filter screen can dismantle the connection in the top of connecting pipe.

And the drainage pipe is communicated with the drainage pipe of the secondary washbasin, the secondary dry floor drain and the drainage pipe of the primary floor drain, and the drainage pipe is communicated with the side wall of the waste water pipe.

Further, the horizontal height of the communication position of the draft tube and the waste water pipe is higher than the horizontal height of the connection position of the connection tube and the waste water pipe.

Furthermore, a sealing ring is arranged at the joint of the connecting pipe and the waste water pipe.

Furthermore, a drainage piece is further arranged at the position of the second vertical pipe in the cavity structure, and the drainage piece enables wastewater to be discharged in a rotational flow mode along the tangential direction of the inner wall of the second vertical pipe.

Further, the drainage member is a drainage groove provided on the second fitting at the second riser.

Further, the upper edge of the water storage part is higher than the bottom surface of the cavity structure, and a gap is formed between the upper edge of the water storage part and the inner wall of the second assembly part.

Further, the bottom of the water storage part is provided with a metal supporting leg.

Furthermore, the outer peripheral surface of the second assembly part is also provided with a surrounding waterproof wing ring.

Further, an anti-overflow mechanism is further arranged at the second vertical pipe in the cavity structure, wherein:

the overflow preventing mechanism comprises an overflow preventing ball seat and an overflow preventing ball;

the overflow-preventing ball seat is provided with a water accumulation discharge hole communicated with the second vertical pipe, and the overflow-preventing ball is placed on the water accumulation discharge hole;

a accumulated water inflow hole is formed in the position, corresponding to the accumulated water discharge hole, of the first assembly part, and the diameter of the accumulated water inflow hole is smaller than that of the anti-overflow ball;

the centers of the accumulated water inflow hole and the accumulated water discharge hole are positioned on the same axis.

By adopting the technical scheme, the drainage system mainly has the following technical effects:

1. for the first floor drainage system, when sewage enters the first floor first inlet pipe along the first floor second inlet pipe, the radius of curvature of the sewage adherence rotational flow can be increased by the arrangement of the first floor pipe wall cavity. When the sewage discharge capacity is great, can effectively increase the discharge velocity of sewage, ensure that sewage can the wall whirl, avoid the water stopper to form, reduce the production of drainage noise simultaneously.

2. For the sublayer drainage system, the horizontal pipe drainage assembly with the flat cavity is arranged, the horizontal pipe drainage assembly, the sublayer drainage pipe assembly and the water seal assembly are communicated with each other, so that toilet sewage guided by the sublayer drainage pipe assembly and wastewater guided by the water seal assembly are converged into the horizontal pipe drainage assembly together, and then the toilet sewage is discharged into a second lower-layer main drainage pipeline through a second vertical pipe, so that the technical problems that a plurality of sewage discharge pipelines are adopted in the prior art, construction is complicated, the occupied space of the sewage discharge pipeline is large, and the floor layer is required to be reduced are solved. In addition, the horizontal pipe drainage component is arranged in a flat cavity, so that the space occupied by the drainage pipe is further reduced, the technical effect of not reducing floor layers is realized, and the height of a toilet can be consistent with that of a living room and a bedroom. In addition, closestool sewage passes through the water seal subassembly water conservancy diversion to the second riser in through sublayer drainage pipe subassembly in, waste water, and sewage and waste water have realized dirty useless separation in getting into the second riser through respective pipeline respectively, more accord with sanitary requirement.

3. Violently manage drainage component bottom slope and set up and utilized the gravity principle ingeniously, converge waste water and unnecessary sewage to the second riser, simple structure, greatly reduced manufacturing cost, in addition with deposit water a ingenious cooperation for can follow from depositing the water a piece outflow violently manage drainage component's waste water and follow and spill over around, increased the discharge space of waste water, prevent that waste water can not be timely discharge.

4. The floor drain of water seal subassembly, the detachable connection structure of connecting pipe and waste pipe, when collecting the inside jam that takes place of system, the maintainer need not demolish the wall and just can overhaul the department that blocks up, only need demolish grate, first filter screen, second filter screen and connecting pipe in shower floor drain department and can overhaul and block up the trouble, convenient easy going, especially the honeycomb duct sets up on the lateral wall of waste pipe, when the honeycomb duct takes place to block up, the maintainer also only needs to dismantle above-mentioned part and can overhaul.

5. The water seal assembly is a water seal shared by multiple devices, and the floor drain and the drainage pipeline in the dry area share one water seal, so that the failure rate of the water seal is reduced while the water seal effect is improved, the destruction rate of the water seal is reduced, and the probability of harmful substances in the vertical pipe entering the room is reduced, thereby playing the epidemic prevention function;

6. through setting up metal support water seal subassembly in water storage part bottom for there is the certain distance between water seal subassembly and the floor surface, when the conflagration breaing out, thereby avoid water seal subassembly and flame direct contact to prevent the intensity of a fire further to stretch.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a first generation building drainage system of the background art;

FIG. 2 is a cross-sectional view of a drainage system of a second generation building of the background art;

FIG. 3 is a schematic structural diagram of a non-dropping board drainage system for building jump layers according to the present invention;

FIG. 4 is a schematic structural view of the header drain assembly of FIG. 3;

FIG. 5 is a schematic structural view of the primary expansion joint of FIG. 4;

FIG. 6 is a schematic structural view of FIG. 4 with the first layer expansion joint hidden;

FIG. 7 is a schematic view of the structure of FIG. 6 from another perspective;

FIG. 8 is a schematic view of a portion of the structure of FIG. 7;

FIG. 9 is a schematic view of the structure of the sub-floor drain assembly of FIG. 3;

FIG. 10 is a schematic view of the sub-layer expansion joint of FIG. 9;

FIG. 11 is a schematic structural view of FIG. 9 with the expansion joint of the first layer hidden;

FIG. 12 is a schematic view of the structure of FIG. 11 from another perspective;

FIG. 13 is a schematic view of a portion of the structure of FIG. 12;

FIG. 14 is an exploded view of the cross tube drain assembly of FIG. 3;

FIG. 15 is an enlarged view of portion A of FIG. 14;

FIG. 16 is a schematic view of the second fitting of FIG. 14 from another perspective;

FIG. 17 is a schematic view of the cross tube drain assembly;

FIG. 18 is a schematic cross-sectional view of the cross-pipe drainage assembly installed in a floor slab;

FIG. 19 is an exploded view of the water seal assembly;

fig. 20 is a schematic view of the mounting member of fig. 19.

Wherein the reference numerals have the following meanings:

101. a first connecting pipe; 201. a second connecting pipe; 301. a third connecting pipe; 401. a floor slab; 501. a header pipe; 601. a riser; 701. a cushion layer; 1. a first floor drainage system; 11. a first floor drain pipe assembly; 12. a first floor drain blow-off pipe; 13. an upper layer of a main drainage pipeline; 14. a first layer of closestool drain pipe; 15. a first lower-layer main drainage pipeline; 16. the first layer washbasin sewage draining pipe; 17. a first floor of a dry area floor drain; 18. a first floor of wet area floor drain; 111. A first layer of first water inlet pipe; 112. a first layer of a second water inlet pipe; 113. a first layer pipe wall cavity; 114. a first layer of baffles; 115. a first layer of pressure stabilizing film; 116. a first-layer pipe cover; 117. a first layer of pipe interfaces; 118. a first riser of a first floor; 119. a first layer of expansion joint; 1191. a first layer of outer layer circular tube; 1192. a first layer of inner layer circular tube; 1193. a first layer of sealing ring; 2. a secondary drainage system; 21. a horizontal pipe drainage assembly; 22. a secondary drainage pipe assembly; 23. a water seal assembly; 25. a toilet bowl blow-off pipe; 26. a second lower-layer main drainage pipeline; 27. a washbasin blow-off pipe; 28. a dry area floor drain; 221. a first sublayer water inlet pipe; 222. a second water inlet pipe of the sublayer; 223. a secondary pipe wall cavity; 224. a sublayer baffle; 225. secondary layer pressure stabilizing film; 226. a secondary layer pipe cover; 227. a sub-layer pipe interface; 228. a second riser of the second floor; 229. a secondary layer expansion joint; 2291. a secondary outer layer circular pipe; 2292. a sub-layer inner layer circular tube; 2293. a secondary sealing ring; 211. a first fitting member; 2111. a sub-level first riser interface; 2112. a waste water pipe interface; 2113. accumulated water flows into the hole; 212. a second fitting member; 2121. a second riser; 2122. a water storage member; 2123. a waterproof wing ring; 2124. a metal leg; 213. a drainage member; 2141. an anti-overflow ball seat; 21411. a standing water drain hole; 2142. the anti-overflow ball is prevented; 231. a floor drain; 2311. a floor drain cover; 23111. a fine-toothed comb; 23112. a first filter screen; 23113. a mounting member; 231131, mounting grooves; 231132, an adjustment member; 23121. a second filter screen; 2312. a connecting pipe; 232. a waste pipe; 234. a flow guide pipe; 235. And (5) sealing rings.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, the terms "upper", "lower", "front", and "rear", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The following further describes embodiments of the present invention with reference to the drawings.

Referring to fig. 3-20, the embodiment provides a no-fall board drainage system for building jump floors, which comprises a first floor drainage system 1 and a second floor drainage system 2, wherein the first floor drainage system 1 comprises a first floor drainage pipe assembly 11 and a first floor drain drainage pipe 12, and the upper part, the lateral part and the lower part of the first floor drainage pipe assembly 11 are respectively communicated with an upper layer main drainage pipe 13, a first layer toilet drainage pipe 14 and a first lower layer main drainage pipe 15;

the secondary drainage system 2 comprises a horizontal pipe drainage component 21, a secondary drainage pipe component 22 and a water seal component 23, wherein the secondary drainage pipe component 22 and the water seal component 23 are respectively communicated with the horizontal pipe drainage component 21 and are positioned on two sides, the upper part, the lateral part and the lower part of the secondary drainage pipe component 22 are respectively communicated with a first lower layer main drainage pipe 15, a secondary toilet drainage pipe 25 and the horizontal pipe drainage component 21, and the horizontal pipe drainage component 21 is communicated with a second lower layer main drainage pipe 26.

Referring to fig. 4-8, the first-layer drain pipe assembly 11 includes a first-layer swirl tee, the first-layer swirl tee includes a first-layer first water inlet pipe 111 and a first-layer second water inlet pipe 112 connected with the side wall of the first-layer first water inlet pipe 111 and internally communicated, the upper portion of the first-layer first water inlet pipe 111 is communicated with the upper-layer main drain pipe 13, the first-layer second water inlet pipe 112 is communicated with the first-layer toilet drain pipe 14, and a first-layer first vertical pipe 118 is arranged at the lower portion of the first-layer first water inlet pipe 111; the inner edge of the first layer of second water inlet pipe 112 is tangent to the inner edge of the first layer of first water inlet pipe 111, and the communicated part of the first layer of second water inlet pipe 112 and the first layer of first water inlet pipe 111 is a first layer pipe wall cavity 113 with an expanded volume.

In this embodiment, the first layer of the first water inlet pipe 111 and the first layer of the second water inlet pipe 112 are integrally formed by injection molding, and an included angle of 91.5 degrees is formed between the first layer of the first water inlet pipe 111 and the first layer of the second water inlet pipe 112.

Therefore, when sewage discharged by the closestool enters the first-layer first water inlet pipe 111 along the first-layer second water inlet pipe 112, the curvature radius of the sewage adherence rotational flow can be increased by the arrangement of the first-layer pipe wall cavity 113. When the discharge capacity of sewage is great, can effectively increase the discharge rate of sewage, ensure that sewage can the wall whirl, avoid the water stopper to form, reduce the production of drainage noise simultaneously.

In addition, this first inlet tube 111 is the funnel-shaped structure that the upper end expands, and the lower extreme reduces for when sewage pastes the wall whirl in first inlet tube 111, its whirl radius is by big dwindling gradually, thereby has improved the discharge rate of sewage, has reduced the drainage noise simultaneously.

Referring to fig. 6, the upper end of the first layer of the first water inlet pipe 111 is provided with a first layer of pipe cover 116, the first layer of pipe cover 116 is provided with a first layer of pipe joints 117, and the first layer of pipe joints 117 are respectively communicated with the first layer of the first water inlet pipe 111 and the upper layer of the main water discharge pipeline 13. The lower end of the first layer first water inlet pipe 111 is provided with a first layer first vertical pipe 118, and the first layer first vertical pipe 118 is positioned between the first layer first water inlet pipe 111 and the first lower layer main drainage pipeline 15 and is communicated with the inside.

In addition, referring to fig. 4 to 5, since the temperature of the sewage in the upper main drainage pipeline 13 varies according to the source, the temperature of the sewage varies, for example, the temperature of the waste water generated by showering may be higher than that of normal domestic water by approximately 30 ℃, and the temperature difference of the sewage may cause thermal expansion and cold contraction of the pipeline. Therefore, in order to reduce the influence of expansion with heat and contraction with cold on the pipeline, a first-layer expansion joint 119 is further arranged between the first-layer first water inlet pipe 111 and the upper-layer main drainage pipeline 13, and the lower end of the first-layer expansion joint 119 is inserted into the first-layer pipe interface 117 and is communicated with the first-layer pipe interface 117; the upper end of the first layer telescopic joint 119 is communicated with an upper layer main drainage pipeline 13; the inner wall of the upper end of the first layer expansion joint 119 is provided with a first layer sealing ring 1193, and the first layer sealing ring 1193 is abutted with the outer wall of the upper layer main drainage pipeline 13.

In this embodiment, the first layer expansion joint 119 includes a first layer outer layer circular tube 1191 and a first layer inner layer circular tube 1192 which are mutually sleeved, the first layer sealing ring 1193 is arranged on the inner wall of the first layer outer layer circular tube 1191, and the lower end of the first layer inner layer circular tube 1192 is inserted into the first layer tube interface 117.

Therefore, when the pipeline expands with heat and contracts with cold, the upper-layer main drainage pipeline 13 and the first-layer outer-layer circular pipe 1191 can slide relatively, so that the deformation of the pipeline caused by the change of the sewage temperature is compensated, and the maximum expansion range of the first-layer expansion joint 119 can reach 102 mm. Meanwhile, the first-layer sealing ring 1193 can ensure the connection sealing property between the first-layer expansion joint 119 and the upper-layer main drainage pipeline 13.

In addition, referring to fig. 7 to 8, in order to avoid the sewage convection caused by the difference between the rotational flow direction of the sewage entering the first-layer first water inlet pipe 111 along the rotational flow of the upper-layer main water discharge pipeline 13 and the rotational flow direction of the sewage entering the first-layer first water inlet pipe 111 along the rotational flow of the first-layer second water inlet pipe 112, the first-layer water discharge pipe assembly 11 further includes a first-layer baffle 114, and the first-layer baffle 114 is disposed at the communication position of the first-layer second water inlet pipe 112 and the first-layer first water inlet pipe 111. From this, through set up first floor baffle 114 in intercommunication department for sewage in the first floor second inlet tube 112 can get into first floor first inlet tube 111 according to the direction whirl of setting for, guarantees that the whirl direction of the sewage that gets into in first floor first inlet tube 111 from first floor second inlet tube 112 is the same with the whirl direction of the sewage in first floor first inlet tube 111.

In addition, when the pressure of the water flow entering the first-layer first water inlet pipe 111 along the upper-layer main water discharge pipeline 13 is greater than the pressure of the water flow entering the first-layer first water inlet pipe 111 along the first-layer second water inlet pipe 112, the sewage in the first-layer first water inlet pipe 111 may be caused to reversely flow into the first-layer second water inlet pipe 112. In order to avoid the above situation, the first-layer drain pipe assembly 11 in this embodiment further includes a first-layer pressure stabilizing film 115 disposed at a communication position where the first-layer first water inlet pipe 111 communicates with the first-layer second water inlet pipe 112, where the material of the first-layer pressure stabilizing film 115 is not specifically limited, and the first-layer pressure stabilizing film 115 in this embodiment is made of a flexible material. When the pressure of the discharged water flow in the first-layer first water inlet pipe 111 is greater than the pressure caused by the discharged water flow of the first-layer second water inlet pipe 112, the sewage in the first-layer first water inlet pipe 111 impacts the first-layer pressure stabilizing film 115, and the first-layer pressure stabilizing film 115 can prevent the sewage in the first-layer first water inlet pipe 111 from being extruded into the first-layer second water inlet pipe 112 due to pressure difference, so that the sewage can be stably discharged from the first-layer first vertical pipe 118 in a wall-attached rotational flow manner; when the pressure caused by the discharge water flow of the first layer of the first water inlet pipe 111 is equal to the pressure caused by the discharge water flow of the first layer of the second water inlet pipe 112, the first layer of the pressure stabilizing film 115 is in a normal assembly state, and the discharge of pipeline sewage is not influenced; when the discharge pressure water flow in the first layer of the first water inlet pipe 111 is smaller than the pressure caused by the discharge water flow of the first layer of the second water inlet pipe 112, the first layer of the pressure stabilizing film 115 is impacted by the sewage discharged by the first layer of the second water inlet pipe 112 and is sunken inwards along the radial direction of the first layer of the first water inlet pipe 111, the discharge space of the first layer of the second water inlet pipe 112 is enlarged, and the sewage is ensured to be finally discharged stably from the first layer of the first vertical pipe 118 in an adherence rotational flow mode. In addition, when the discharge amount and the spiral flow velocity of the sewage in the first layer of the first water inlet pipe 111 close to the inner wall of the first layer of the first water inlet pipe 111 are large, the air flow is disturbed to form a negative pressure suction force, the negative pressure suction force enables the first layer of the pressure stabilizing film 115 to generate an acting force which is concave inwards along the radial direction of the first layer of the first water inlet pipe 111, meanwhile, the sewage performs a spiral circular motion to form a pipe wall which has a centripetal reaction force to the drainage pressure of the sewage, the pipe wall formed by the large drainage amount enables the first layer of the pressure stabilizing film 115 to generate an acting force which expands outwards along the radial direction of the first layer of the first water inlet pipe 111, when the first layer of the pressure stabilizing film 115 is not arranged, the negative pressure suction force and the drainage pressure are dispersed on the contact surfaces of negative pressure airflow and the pipe wall and the sewage, and can not be mutually offset, the toilet water seal is easily sucked by the negative pressure to cause the toilet water seal to lose, in addition, three forces of the sunken acting force, the expanded acting force and the rigidity of the first layer pressure stabilizing film 115 are mutually offset, so that the effect of reducing air pressure fluctuation in the first layer second water inlet pipe 112 is achieved, the system damping is increased, and the risk of failure of the toilet water seal caused by negative pressure suction is reduced. When being the malleation in the first inlet tube 111 of first floor, first floor pressure stabilizing membrane 115 radially outwards expands along first inlet tube 111 of first floor to reach the undulant mesh of pressure in lightening first floor second inlet tube 112, increase system damping, reduce the closestool water seal and lead to the risk of inefficacy because of the malleation splash. When the flow rate of the sewage in the first layer of the second water inlet pipe 112 is large, negative pressure is formed in the first layer of the second water inlet pipe 112, and the negative pressure enables the first layer of the pressure stabilizing film 115 to be sunken towards the inner side of the first layer of the second water inlet pipe 112 to prevent the sewage in the first layer of the first water inlet pipe 111 from being sucked; similarly, when the sewage in the first layer of the first water inlet pipe 111 flows at an excessive speed, a negative pressure is formed, which may cause water sealed in the toilet to be sucked out, thereby reducing the water sealing effect of the toilet, and the first layer of the pressure stabilizing film 115 is recessed towards the inner side of the first layer of the first water inlet pipe 111 to prevent the sewage in the first layer of the second water inlet pipe 112 from being sucked into the first layer of the first water inlet pipe 111 due to the negative pressure.

In addition, the first floor drain blow-off pipe 12 is communicated with a first floor dry area drain 17, a first floor wet area drain 18 and a first floor washbasin blow-off pipe 16.

Referring to fig. 9-13, the secondary drainage pipe assembly 22 comprises a secondary cyclone tee joint, the secondary cyclone tee joint comprises a secondary first water inlet pipe 221 and a secondary second water inlet pipe 222 connected with the side wall of the secondary first water inlet pipe 221 and communicated with the interior of the secondary first water inlet pipe, the upper part of the secondary first water inlet pipe 221 is communicated with the first lower-layer main drainage pipe 15, the secondary second water inlet pipe 222 is communicated with the secondary toilet drainage pipe 25, and a secondary first vertical pipe 228 is arranged at the lower part of the secondary first water inlet pipe 221; the inner edge of the second inlet pipe 222 is tangent to the inner edge of the first inlet pipe 221, and the communication part of the second inlet pipe 222 and the first inlet pipe 221 is a sub-layer pipe wall cavity 223 with an expanded volume.

In this embodiment, the first inlet pipe 221 and the second inlet pipe 222 are integrally formed by injection molding, and an included angle of 91.5 degrees is formed between the first inlet pipe 221 and the second inlet pipe 222.

Therefore, when sewage discharged by the closestool enters the first water inlet pipe 221 along the second water inlet pipe 222 of the secondary layer, the curvature radius of the sewage adherence rotational flow can be increased by the arrangement of the pipe wall cavity 223 of the secondary layer. When the discharge capacity of sewage is great, can effectively increase the discharge rate of sewage, ensure that sewage can the wall whirl, avoid the water stopper to form, reduce the production of drainage noise simultaneously.

In addition, the first water inlet pipe 221 of the secondary layer is of a funnel-shaped structure with the upper end expanded and the lower end reduced, so that when sewage flows in a wall-attached swirling manner in the first water inlet pipe 221 of the secondary layer, the swirling radius of the sewage is gradually reduced from large to small, the discharge speed of the sewage is improved, and meanwhile, the drainage noise is reduced.

Referring to fig. 11, a sub-layer pipe cover 226 is disposed on the upper end of the sub-layer first water inlet pipe 221, and a sub-layer pipe joint 227 is disposed on the sub-layer pipe cover 226, wherein the sub-layer pipe joint 227 is respectively communicated with the sub-layer first water inlet pipe 221 and the first lower-layer main water discharge pipe 15. The lower end of the first inlet pipe 221 is provided with a first riser 228, and the first riser 228 is communicated with the cavity structure of the horizontal pipe drainage assembly 21.

In addition, referring to fig. 9-10, a secondary expansion joint 229 is further disposed between the secondary first water inlet pipe 221 and the first lower main water discharge pipeline 15, and the structure and function of the secondary expansion joint 229 are identical to those of the primary expansion joint 119, and will not be described herein.

In addition, referring to fig. 12-13, the sub-level drainage pipe assembly 22 further includes a sub-level baffle 224, wherein the sub-level baffle 224 is disposed at a communication position of the sub-level second inlet pipe 222 and the sub-level first inlet pipe 221. The structure and function of the sub-layer baffle 224 are the same as those of the first layer baffle 114, and will not be described here.

In addition, the sub-layer drainage pipe assembly 22 of the present embodiment further includes a sub-layer pressure stabilizing film 225 disposed at a communication position of the sub-layer first water inlet pipe 221 and the sub-layer second water inlet pipe 222, and the structure and function of the sub-layer pressure stabilizing film 225 are identical to those of the first layer pressure stabilizing film 115, which will not be described herein.

Referring to fig. 14-18, the horizontal tube drain assembly 21 includes a first fitting member 211 and a second fitting member 212, the first fitting member 211 and the second fitting member 212 being closed to form a cavity structure; the first assembly member 211 and the second assembly member 212 are of an integral structure. The first assembly member 211 is provided with a first lower layer vertical pipe interface 2111 close to one side of the lower layer drain pipe component 22 and a waste water pipe interface 2112 close to one side of the water seal component 23; the second fitting 212 is provided with a second riser 2121 opposite to the secondary first riser interface 2111 and a water trap 2122 opposite to the waste pipe interface 2112, and the secondary first riser interface 2111, the waste pipe interface 2112, the second riser 2121 and the water trap 2122 are all communicated with a cavity structure.

In addition, a drainage member 213 is further disposed at the second vertical pipe 2121 in the cavity structure, and the drainage member 213 enables the wastewater to be discharged in a swirling manner along the tangential direction of the inner wall of the second vertical pipe 2121. Specifically, the flow guide 213 is a flow guide groove provided on the second fitting 212 and located at the second riser 2121.

From this, set up drainage piece 213, make waste water can be along the inner wall tangential direction whirl discharge of second riser 2121, when guaranteeing that violently manage the waste water discharge capacity in the drainage component 21 big, still can follow adherence whirl discharge in the second riser 2121, reduce the possibility that forms the water stopper, reduce the drainage noise simultaneously.

Referring to fig. 14, the upper edge of the water-storing member 2122 is higher than the bottom surface of the cavity structure, and is not tangent to the inner wall of the second assembly member 212 and is separated by a certain gap; the bottom of the water trap 2122 is also provided with a metal leg 2124.

In this embodiment, the metal leg 2124 is L-shaped and is connected to the water trap 2122 by a bolt or a screw.

Therefore, when the wastewater flowing into the water trap 2122 from the water seal assembly 23 reaches a certain flow rate, the wastewater can be discharged into the cavity from the periphery of the upper edge of the water trap 2122, so that the space for discharging the wastewater from the water trap 2122 is increased, and the wastewater can be discharged in time. Further, by providing metal legs 2124 at the bottom of the water trap 2122, the water trap 2122 can be attached to the floor via the metal legs 2124, and the water trap 2122 is placed at a predetermined height from the floor bottom, and concrete is poured at this height; when a fire disaster occurs, the concrete pouring layer can play a role in isolating spread of fire disasters on different layers.

In addition, in the use process of the horizontal pipe drainage assembly 21 of the present invention, waste water may be deposited on the floor surface, and in order to drain the waste water deposited on the floor surface into the second vertical pipe 2121, the horizontal pipe drainage assembly further comprises an anti-overflow mechanism disposed in the cavity structure and located at the second vertical pipe 2121, wherein the anti-overflow mechanism comprises an anti-overflow ball seat 2141 and an anti-overflow ball 2142; the anti-overflow ball seat 2141 is provided with a water accumulation discharge hole 21411 communicated with the second riser 2121, and the anti-overflow ball 2142 is placed on the water accumulation discharge hole 21411; the first assembly 211 is further provided with a accumulated water inflow hole 2113 at a position corresponding to the accumulated water discharge hole 21411, and the diameter of the accumulated water inflow hole 2113 is smaller than that of the anti-spill ball 2142.

Specifically, the anti-spill ball seat 2141 is disposed on an inner wall of the second fitting member 212; the center of the accumulated water inflow hole 2113 and the accumulated water discharge hole 21411 are located on the same axis.

Therefore, the accumulated water discharge hole 21411 formed in the anti-backflow ball seat 2141 horizontally limits the anti-backflow ball 2142, and the anti-backflow ball 2142 can move only vertically between the anti-backflow ball seat 2141 and the accumulated water discharge hole 21411 formed in the anti-backflow ball seat 2141. When there is standing water on the floor surface, standing water can enter through the standing water inflow hole 2113 and flow out of the standing water discharge hole 21411, and then discharge into the second riser 2121; meanwhile, when the overflow of the wastewater occurs, the overflow preventing ball 2142 is subjected to the buoyancy of the wastewater to closely fit the accumulated water inflow hole 2113 to seal the accumulated water inflow hole 2113, thereby preventing the overflow of the wastewater in the second riser 2121.

In addition, during the use of the horizontal pipe drainage assembly 21, accumulated water on the ground can flow into gaps on the floor slab and permeate through the gaps on the lower floor slab. To prevent this, the outer circumferential surface of the second fitting 212 in this embodiment is further provided with a surrounding waterproof wing ring 2123. When the waste water permeates, the waterproof wing ring 2123 can prevent the permeated waste water from further permeating into the lower floor slab, and the function of water stopping is achieved.

Referring to fig. 15-20, the water seal assembly 23 includes a floor drain 231 and a waste pipe 232 detachably connected to the floor drain 231, wherein the waste pipe 232 is communicated with a waste pipe interface 2112; the floor drain 231 comprises a floor drain cover 2311 arranged on the upper side of the waste water pipe 232 and a connecting pipe 2312 arranged on the lower side of the waste water pipe 232, and both the floor drain cover 2311 and the connecting pipe 2312 are detachably connected with the waste water pipe 232; the connecting pipe 2312 is connected with the waste pipe 232 and then extends into the cavity of the water storage part 2122, and gaps are formed between the outer wall of the connecting pipe 2312 and the inner wall of the water storage part 2122.

Therefore, after the waste water generated by the shower enters the floor drain 231, the waste water passes through the waste water pipe 232 and the connecting pipe 2312 in sequence and is finally guided to the water storage part 2122, along with the continuous rising of the liquid level of the waste water in the water storage part 2122, when the liquid level of the waste water in the water storage part 2122 is higher than the lowest point of the connecting pipe 2312, the liquid level of the waste water forms a water seal at the bottom of the connecting pipe 2312, and therefore harmful gas is prevented from entering the connecting pipe 2312 and further overflowing outdoors through the floor drain 231.

In the present embodiment, when the connection pipe 2312 is installed, the connection pipe 2312 is inserted into the interior of the waste pipe 232 from the top of the waste pipe 232 and the top of the connection pipe 2312 is overlapped on the bottom of the waste pipe 232.

Referring to fig. 19 to 20 again, the waste water entering the floor drain 231 may be mixed with impurities which may cause congestion of the floor drain 231, such as hairs, in order to reduce the possibility of congestion of the floor drain 231, the floor drain cover 2311 in the present embodiment includes a grate 23111, a first filter screen 23112 and a mounting member 23113, both the grate 23111 and the first filter screen 23112 are detachably connected to the upper side of the mounting member 23113, and the grate 23111 is located above the first filter screen 23112; the mounting member 23113 has an adjustment member 231132 on an underside thereof, and the mounting member 23113 is removably connected to the waste 232 by the adjustment member 231132.

Therefore, when the wastewater enters the floor drain 231 through the perforated strainer 23111, the wastewater is firstly filtered by the perforated strainer 23111, and the wastewater passing through the perforated strainer 23111 is secondly filtered by the first filter screen 23112, so that the hair or other impurities in the wastewater are reduced. The adjustment member 231132 allows the height of the mounting member 23113 to be adjusted according to various finishing conditions. In some embodiments, the adjustment member 231132 is a fabricated circular ring structure with certain specifications, and the adjustment member 231132 can be provided in several numbers. Preferably, three adjusting members 231132 are arranged in the embodiment, and the number of the adjusting members 231132 can be increased or decreased according to different decoration conditions, so that the height of the floor drain cover 2311 in the embodiment can be adjusted within the range of 2 cm; of course, the adjusting member 231132 may be shaped and sized accordingly according to the requirements of the customer, so that the height of the mounting member 23113, and thus the height of the floor drain cover 2311, can be adjusted by selecting the adjusting member 231132 with a suitable shape and size according to different decoration conditions. The mounting member 23113 is provided at an upper side thereof with a mounting groove 231131 for mounting the first filter 23112.

Referring to fig. 19, the device further comprises a diversion pipe 234 communicating the secondary washbasin sewage discharge pipe 27, the secondary dry floor drain 28 and the primary floor drain sewage discharge pipe 12, wherein the diversion pipe 234 is communicated with the side wall of the waste water pipe 232; the level of the connection between the draft tube 234 and the waste 232 is higher than the level of the connection between the connection pipe 2312 and the waste 232. In order to increase the water sealing effect, the present embodiment is provided with a sealing ring 235 for sealing at the junction of the waste pipe 232 and the connection pipe 2312.

Thus, by providing the flow guide pipe 234, the flow guide pipe 234 guides the waste water generated from the dry floor drain 28 or the washbasin sewage drain 27 or the first floor drain 12 into the water trap 2122 through the connection pipe 2312 to replenish the amount of waste water in the water trap 2122, and prevents the waste water in the water trap 2122 from drying up until the waste water level is lower than the lowest point of the connection pipe 2312, thereby preventing the water seal from being lost.

In this embodiment, the flow guiding pipe 234 is a flat pipe. Of course, in other embodiments, the flow guide pipe 234 may have other shapes, and is not limited herein.

Referring again to fig. 19, a second filter 23121 is also included, the second filter 23121 being removably attached to the top of the connector 2312. Thus, the second filter 23121 can filter the waste water entering the floor drain 231 through the grate 23111 for the third time. Meanwhile, since the horizontal height of the communication position of the flow guide pipe 234 and the waste water pipe 232 is higher than the horizontal height of the connection position of the connection pipe 2312 and the waste water pipe 232, the waste water entering the waste water pipe 232 from the flow guide pipe 234 can be filtered by the second filter screen 23121, so as to reduce the waste water impurities entering the floor drain 231 from the flow guide pipe 234.

From this, this floor drain lid 2311 and connecting pipe 2312 all can dismantle with waste pipe 232 and be connected, and when the inside jam that takes place of floor drain system needs the maintenance, the maintainer need not demolish the wall and just can overhaul, only need demolish grate 23111, first filter screen 23112, second filter screen 23121 and connecting pipe 2312 in proper order and overhaul, and is simple and convenient, and overhauls the field of vision good.

It should be noted that the embodiments of the present invention are disclosed only as the preferred embodiments of the present invention, and are only used for illustrating the technical solutions of the present invention, not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A board drainage system is not fallen for building spring storey, includes first floor drainage system (1) and sublayer drainage system (2), first floor drainage system (1) includes first floor drain pipe assembly (11) and first floor drain blow off pipe (12), upper portion, lateral part and lower part of the said first floor drain pipe assembly (11) are communicated with upper floor main drainage pipe (13), first floor closestool blow off pipe (14) and first lower floor main drainage pipe (15) separately;

the secondary drainage system (2) comprises a horizontal pipe drainage component (21), and secondary drainage pipe components (22) and a water seal component (23) which are respectively communicated with the horizontal pipe drainage component (21) and are positioned on two sides, wherein the upper part, the lateral part and the lower part of each secondary drainage pipe component (22) are respectively communicated with a first lower-layer main drainage pipeline (15), a secondary closestool drainage pipe (25) and the horizontal pipe drainage component (21), and the horizontal pipe drainage component (21) is communicated with a second lower-layer main drainage pipeline (26);

the interior of the horizontal pipe drainage component (21) is of a flat cavity structure, and the bottom surface of the cavity structure is obliquely arranged.

2. The drainage system according to claim 1, wherein the first-layer drainage pipe assembly comprises a first-layer rotational flow tee joint, and the first-layer rotational flow tee joint comprises a first-layer first water inlet pipe (111) and a first-layer second water inlet pipe (112) which is connected with the side wall of the first-layer first water inlet pipe (111) and is communicated with the inside of the first-layer first water inlet pipe; the upper part of the first layer of first water inlet pipe (111) is communicated with the upper layer of main drainage pipeline (13), the lower part of the first layer of first water inlet pipe (111) is communicated with the first lower layer of main drainage pipeline (15), and the first layer of second water inlet pipe (112) is communicated with the first layer of closestool drainage pipe (14);

the inner edge of the first layer of second water inlet pipe (112) is tangent to the inner edge of the first layer of first water inlet pipe (111);

the first layer of pipe wall cavity (113) with the volume expanded is arranged at the communication position of the first layer of second water inlet pipe (112) and the first layer of first water inlet pipe (111).

3. A drainage system according to claim 2, wherein the first inlet pipe (111) of the first layer is a funnel-shaped structure with a wide top and a narrow bottom.

4. The drainage system according to claim 2, further comprising a first-layer baffle (114), wherein the first-layer baffle (114) is arranged at the communication position of the first-layer second water inlet pipe (112) and the first-layer first water inlet pipe (111).

5. A drainage system according to claim 2, further comprising a first layer of pressure stabilizing membrane (115), the first layer of pressure stabilizing membrane (115) being arranged at the communication of the first layer of second inlet pipe (112) with the first layer of first inlet pipe (111).

6. A drainage system according to claim 5, wherein the primary pressure stabilising membrane (115) is made of a flexible material.

7. A drainage system according to claim 2, wherein the first inlet conduit (111) is integrally injection moulded with the second inlet conduit (112).

8. The drainage system according to claim 2, wherein a first-layer pipe cover (116) is arranged at the upper end of the first-layer first water inlet pipe (111), a first-layer pipe interface (117) is arranged on the first-layer pipe cover (116), and the first-layer pipe interface (117) is respectively communicated with the first-layer first water inlet pipe (111) and the upper-layer main drainage pipeline (13).

9. The drainage system according to claim 8, further comprising a first layer expansion joint (119) arranged between the first layer first water inlet pipe (111) and the upper layer main drainage pipeline (13), wherein the lower end of the first layer expansion joint (119) is inserted into the first layer pipe interface (117) and is communicated with the first layer pipe interface (117); the upper end of the first-layer expansion joint (119) is communicated with an upper-layer main drainage pipeline (13); the upper end inner wall of first layer telescopic joint (119) is equipped with first layer sealing washer (1193), first layer sealing washer (1193) and the outer wall looks butt of upper strata water main drainage pipe (13).

10. The drainage system according to claim 2, wherein a first layer first vertical pipe (118) is arranged at the lower end of the first layer first water inlet pipe (111), and the first layer first vertical pipe (118) is positioned between the first layer first water inlet pipe (111) and the first lower layer main drainage pipeline (15) and is communicated with the interior.

11. The drainage system according to claim 1, wherein the first floor drain blowdown pipe (12) is in communication with the first dry floor drain (17), the first wet floor drain (18), and the first washbasin blowdown pipe (16).

12. Drainage system according to claim 1, wherein the chamber structure is higher on the side close to the water seal assembly (23) than on the side close to the secondary drainage pipe assembly (22).

13. The drainage system according to claim 12, wherein the cross tube drainage assembly (21) comprises a first fitting (211) and a second fitting (212), the first fitting (211) and the second fitting (212) being closed to form the cavity structure; the first assembly part (211) and the second assembly part (212) are of an integrated structure.

14. The drainage system according to claim 13, wherein the first assembly member (211) is provided with a first sub-layer riser connector (2111) adjacent to one side of the sub-layer drainage pipe assembly (22) and a waste pipe connector (2112) adjacent to one side of the water seal assembly (23); the second assembly part (212) is provided with a second vertical pipe (2121) opposite to the first sub-layer vertical pipe interface (2111) and a water storage part (2122) opposite to the waste water pipe interface (2112), and the first sub-layer vertical pipe interface (2111), the waste water pipe interface (2112), the second vertical pipe (2121) and the water storage part (2122) are communicated with the cavity structure;

the second vertical pipe (2121) is communicated with the second lower-layer main drainage pipeline (26).

15. The drainage system according to claim 14, wherein the secondary drainage pipe assembly (22) comprises a secondary cyclone tee joint, the secondary cyclone tee joint comprises a secondary first water inlet pipe (221) and a secondary second water inlet pipe (222) connected with the side wall of the secondary first water inlet pipe (221) and communicated with the interior of the secondary first water inlet pipe, the upper portion of the secondary first water inlet pipe (221) is communicated with the first lower-layer main drainage pipe (15), the secondary second water inlet pipe (222) is communicated with the secondary toilet drainage pipe (25), a secondary first vertical pipe (228) is arranged at the lower portion of the secondary first water inlet pipe (221), and the secondary first vertical pipe (228) is communicated with the secondary first vertical pipe connector (2111); the inner edge of the second water inlet pipe (222) of the sublayer is tangent to the inner edge of the first water inlet pipe (221) of the sublayer, and the communicating part of the second water inlet pipe (222) of the sublayer and the first water inlet pipe (221) of the sublayer is a sublayer pipe wall cavity (223) with an expanded volume.

16. A drainage system according to claim 14, wherein the water seal assembly (23) comprises a floor drain (231) and a waste pipe (232) detachably connected to the floor drain (231), wherein:

the waste pipe (232) is communicated with the waste pipe interface (2112);

the floor drain (231) comprises a floor drain cover (2311) arranged on the upper side of the waste water pipe (232) and a connecting pipe (2312) arranged on the lower side of the waste water pipe (232), and the floor drain cover (2311) and the connecting pipe (2312) are detachably connected with the waste water pipe (232);

the connecting pipe (2312) is connected with the waste water pipe (232) and then extends into the cavity of the water storage part (2122), and gaps are reserved between the outer wall of the connecting pipe (2312) and the inner wall of the water storage part (2122).

17. The drainage system of claim 16, wherein the floor drain cover (2311) comprises a grate (23111), a first filter (23112), and a mounting member (23113), wherein:

the grate (23111) and the first filter screen (23112) are detachably connected to the upper side of the mounting piece (23113), and the grate (23111) is positioned above the first filter screen (23112);

the lower side of the mounting piece (23113) is provided with an adjusting piece (231132), and the mounting piece (23113) is detachably connected with the waste water pipe (232) through the adjusting piece (231132).

18. The drain system of claim 16, further comprising a second filter (23121), the second filter (23121) being removably attached to a top of the connecting tube (2312).

19. The drainage system according to claim 16, further comprising a diversion pipe (234) communicating the secondary washbasin sewage drain (27), the secondary dry floor drain (28) and the primary floor drain sewage drain (12), wherein the diversion pipe (234) is communicated with the side wall of the waste water pipe (232).

20. A drainage system according to claim 19, wherein the level of the communication of the draft tube (234) with the waste (232) is higher than the level of the connection tube (2312) with the waste (232).

21. A drainage system according to claim 16, wherein the junction of the connecting pipe (2312) and the waste pipe (232) is provided with a sealing ring (235).

22. A drainage system according to claim 14, wherein a drainage member (213) is further provided in the cavity structure at the second riser (2121), and the drainage member (213) enables the wastewater to be discharged in a swirling manner along a tangential direction of an inner wall of the second riser (2121).

23. A drainage system according to claim 22, wherein the drainage member (213) is a drainage groove provided on the second fitting (212) at the second riser (2121).

24. A drainage system according to claim 14, wherein the upper edge of the water retaining member (2122) is above the floor of the chamber structure and spaced from the inner wall of the second fitting member (212) by a gap.

25. A drainage system according to claim 14, wherein the bottom of the trap (2122) is provided with metal legs (2124).

26. A drainage system according to claim 14, wherein the outer peripheral surface of the second fitting (212) is further provided with a surrounding water-resistant wing ring (2123).

27. A drainage system according to claim 14, wherein an anti-back-overflow mechanism is further provided within the cavity structure at the second riser (2121), wherein:

the overflow preventing mechanism comprises an overflow preventing ball seat (2141) and an overflow preventing ball (2142);

the overflow-preventing ball seat (2141) is provided with a water accumulation discharge hole (21411) communicated with the second vertical pipe (2121), and the overflow-preventing ball (2142) is placed on the water accumulation discharge hole (21411);

a accumulated water inflow hole (2113) is further formed in the position, corresponding to the accumulated water discharge hole (21411), of the first assembly part (211), and the diameter of the accumulated water inflow hole (2113) is smaller than that of the overflow preventing ball (2142);

the center of the accumulated water inflow hole (2113) and the center of the accumulated water discharge hole (21411) are located on the same axis.