CN112031089B

CN112031089B - Board homostorey drainage system is not fallen with building bathroom

Info

Publication number: CN112031089B
Application number: CN202010443565.2A
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: 2021-09-10
Anticipated expiration: 2040-05-22
Also published as: CN112031089A

Abstract

The invention provides a non-descending plate same-layer drainage system for a building toilet, which comprises a horizontal pipe drainage component arranged in a floor slab, and a drainage pipe component and a water seal component which are respectively communicated with the horizontal pipe drainage component and are positioned at two sides, wherein the drainage pipe component is communicated with an upper-layer main drainage pipe and a closestool drainage pipe; the water seal assembly comprises a floor drain arranged on a floor slab; the horizontal pipe drainage assembly is communicated with a lower layer main drainage pipeline, collects the wastewater discharged from the drainage pipe assembly and the water seal assembly, and discharges the wastewater through the lower layer main drainage pipeline; 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. According to the drainage system, the horizontal pipe drainage assembly with the flat cavity structure is respectively connected with the drainage pipe assembly and the water seal assembly, so that the occupied space is small, and the stable drainage effect can be realized without reducing floor layers.

Description

Board homostorey drainage system is not fallen with building bathroom

Technical Field

The invention relates to the field of building drainage systems, in particular to a non-falling plate same-layer drainage system for a building toilet.

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 with no-lowering floor for a building toilet, which does not need to lower a floor or reduce the height of the floor and can realize a stable drainage function.

In order to achieve the purpose, the invention discloses a non-descending plate same-layer drainage system for a building toilet, which comprises a horizontal pipe drainage component arranged in a floor slab, and a drainage pipe component and a water seal component which are respectively communicated with the horizontal pipe drainage component and are positioned at two sides, wherein:

the drainage pipe assembly is communicated with the upper layer main drainage pipe and the toilet bowl drainage pipe;

the water seal assembly comprises a floor drain arranged on a floor slab;

the horizontal pipe drainage assembly is communicated with a lower layer main drainage pipeline, collects the wastewater discharged from the drainage pipe assembly and the water seal assembly, and discharges the wastewater through the lower layer main drainage pipeline;

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 height of one side of the cavity structure, which is close to the water seal assembly, is higher than that of one side of the cavity structure, which is close to the drain 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 vertical pipe interface close to one side of the water 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 first vertical pipe interface and a water storage part opposite to the waste water pipe interface, and the 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.

Furthermore, the water drain pipe assembly comprises a rotational flow tee joint, the rotational flow tee joint comprises a first water inlet pipe and a second water inlet pipe which is connected with the side wall of the first water inlet pipe and is communicated with the interior of the first water inlet pipe, the upper part of the first water inlet pipe is communicated with the upper layer main water drain pipe, the second water inlet pipe is communicated with the toilet bowl sewage discharge pipe, a first vertical pipe is arranged at the lower part of the first water inlet pipe, and the first vertical pipe is communicated with a first vertical pipe connector; the inner edge of the second inlet pipe is tangent to the inner edge of the first inlet pipe.

Furthermore, the communicating part of the second water inlet pipe and the first water inlet pipe is a pipe wall cavity with an expanded volume.

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

Further, the drain pipe assembly further comprises a baffle plate, and the baffle plate is arranged at the communication position of the second water inlet pipe and the first water inlet pipe.

Further, the drain pipe assembly further comprises a pressure stabilizing film, and the pressure stabilizing film is arranged at the communication position of the second water inlet pipe and the first water inlet pipe.

Further, the pressure stabilizing film is made of a flexible material.

Further, the first water inlet pipe and the second water inlet pipe are integrally formed in an injection molding mode.

Furthermore, a pipe cover is arranged at the upper end of the first water inlet pipe, a pipe joint is arranged on the pipe cover and is respectively communicated with the first water inlet pipe and the upper-layer main drainage pipeline.

The expansion joint is arranged between the first water inlet pipe and the upper-layer main drainage pipeline, and the lower end of the expansion joint is inserted into the pipe joint and communicated with the first water inlet pipe; the upper end of the telescopic joint is communicated with an upper-layer main drainage pipeline; and a sealing ring is arranged on the inner wall of the upper end of the telescopic joint and is abutted against the outer wall of the upper-layer main drainage pipeline.

Further, the water seal assembly further comprises a waste pipe detachably connected with 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, first filter screen includes the cover plate support frame and sets up a plurality of cover plates on the cover plate support frame, wherein:

the cover plate comprises a fan-shaped main body, and a gravity block is arranged at the lower part of one side of the fan-shaped main body, which is far away from the center of the fan-shaped circle;

the cover plate supporting frame is provided with a positioning strip, the positioning strip extends downwards, and the bottom end of the positioning strip is provided with a rotation stopping part;

the cover plate can be arranged on the cover plate supporting frame in a swinging mode.

Furthermore, the arc edge of the fan-shaped main body is provided with a connecting protrusion, the cover plate supporting frame is provided with a connecting groove, and the connecting protrusion swings and is clamped to the connecting groove.

Furthermore, a concave platform is arranged at the circle center of the sector main body and is clamped with the rotation stopping part.

Further, the upside of installed part is equipped with the mounting groove, be equipped with on the cover plate support frame with mounting groove matched with locating piece.

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

Furthermore, the device also comprises a flow guide pipe communicated with a washbasin blow-off pipe and a dry area floor drain, and the flow guide 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 in the cavity at the second vertical pipe, 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. through setting up the horizontal pipe drainage assembly that has flat cavity to violently manage drainage assembly and drain pipe assembly, water seal subassembly intercommunication each other, make the closestool sewage of drain pipe assembly water conservancy diversion, and the waste water of water seal assembly water conservancy diversion all have been assembled into in the lump and have violently managed drainage assembly, discharge lower floor's total drainage pipe through the second riser again, adopted a plurality of sewage pipes among the prior art, the construction is loaded down with trivial details, and the space that the blow off pipe occupied is big, needs to reduce floor's technical problem. 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 drain pipe subassembly water conservancy diversion to the second riser in, and waste water passes through the water seal subassembly water conservancy diversion to the second riser in, and sewage and waste water have realized dirty useless separation through respective pipeline entering second riser respectively, more accord with sanitary requirement.

2. The drain pipe assembly adopts pipe wall cavity and first inlet tube setting to be narrow infundibulate structure under wide, increases the curvature radius of sewage adherence whirl on the one hand, and on the other hand can cooperate the bore of riser again, has guaranteed sewage adherence whirl, and noise abatement prevents that the foul smell from spilling over.

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 an exploded view of a drainage system for a building toilet in the same floor without lowering the floor according to the present invention;

FIG. 4 is a schematic structural diagram of a drainage system for a building toilet in the same floor without lowering the floor;

FIG. 5 is a schematic structural view of the drain assembly of FIG. 3;

FIG. 6 is a schematic view of the telescopic joint shown in FIG. 5;

FIG. 7 is a schematic structural view of FIG. 5 with the expansion joint hidden;

FIG. 8 is a schematic view of the structure of FIG. 7 from another perspective;

fig. 9 is a partial structural view of fig. 8.

FIG. 10 is an exploded view of the cross tube drain assembly of FIG. 3;

FIG. 11 is an enlarged view of portion A of FIG. 10;

FIG. 12 is a schematic view of the second fitting of FIG. 10 from another perspective;

FIG. 13 is a schematic view of the cross tube drain assembly;

figure 14 is a cross-sectional schematic view of the cross-pipe drainage assembly installed in a floor slab.

FIG. 15 is an exploded view of the water seal assembly of FIG. 3;

FIG. 16 is a schematic view of the first filter of FIG. 15;

FIG. 17 is a schematic view of the structure of FIG. 16 from another perspective;

FIG. 18 is a schematic view of the cover support of FIG. 16;

FIG. 19 is a schematic view of the structure of the cover plate of FIG. 16;

fig. 20 is a schematic view of the mount of fig. 15.

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 confluence vertical pipe; 701. a cushion layer; 1. a horizontal pipe drainage assembly; 2. a drain pipe assembly; 3. a water seal assembly; 4. an upper layer of a main drainage pipeline; 5. a toilet bowl blow-off pipe; 6. a lower-layer main drainage pipeline; 7. a washbasin blow-off pipe; 8. a dry area floor drain; 211. a first water inlet pipe; 212. a second water inlet pipe; 213. a tube wall cavity; 214. a baffle plate; 215. stabilizing the pressure; 216. a tube cover; 217. a pipe interface; 218. a first riser; 219. An expansion joint; 2191. an outer layer circular tube; 2192. an inner layer circular tube; 2193. a seal ring; 11. a first fitting member; 111. a first riser interface; 112. a waste water pipe interface; 113. accumulated water flows into the hole; 12. a second fitting member; 121. a second riser; 122. a water storage member; 123. a waterproof wing ring; 124. a metal leg; 13. a drainage member; 141. an anti-overflow ball seat; 1411. a standing water drain hole; 142. the anti-overflow ball is prevented; 31. a floor drain; 311. A floor drain cover; 3111. a fine-toothed comb; 3112. a first filter screen; 31121. a cover plate support frame; 311211, positioning strips; 311212, rotation stop part; 311213, a positioning block; 311214, connecting grooves; 31122. a cover sheet; 311221, gravity block; 311222, connecting projection; 311223, concave platform; 3113. a mounting member; 31131. mounting grooves; 31132. an adjustment member; 3121. a second filter screen; 312. a connecting pipe; 32. a waste pipe; 34. a flow guide pipe; 35. 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 drainage system for a building toilet at the same floor without lowering the floor, which comprises a horizontal pipe drainage assembly 1 installed in a floor slab, and a drainage pipe assembly 2 and a water seal assembly 3 respectively communicated with the horizontal pipe drainage assembly 1 and positioned at two sides, wherein the drainage pipe assembly 2 is communicated with an upper main drainage pipe 4 and a toilet drainage pipe 5; the water seal assembly 3 comprises a floor drain 31 mounted on a floor slab; the horizontal pipe drainage assembly 1 is communicated with a lower layer main drainage pipeline 6, the horizontal pipe drainage assembly 1 collects waste water discharged from the drainage pipe assembly 2 and the water seal assembly 3, and the waste water is discharged through the lower layer main drainage pipeline 6; the horizontal pipe drainage component 1 is internally provided with a flat cavity structure, and the bottom surface of the cavity structure is obliquely arranged.

From this, violently manage drainage assembly 1 through setting up the flat cavity that has, and will violently manage drainage assembly 1 and drainage pipe assembly 2, water seal assembly 3 communicates each other, make the closestool sewage of drainage pipe assembly 2 water conservancy diversion, and the waste water of 3 water seal assemblies water conservancy diversion has all been assembled into violently in the tube drainage assembly 1 in the lump, discharge lower floor's total drainage pipe 6 again in, adopted a plurality of sewage pipes among the prior art, the construction is loaded down with trivial details, the space that the blow off pipe occupied is big, need reduce floor's technical problem. In addition, the horizontal pipe drainage component 1 is arranged in a flat cavity, so that the space occupied by a 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, sewage and waste water are respectively discharged into the lower-layer main drainage pipeline 6 through respective pipelines, so that sewage and waste water separation is realized, and the sanitary requirement is better met.

Referring to fig. 5-9, the water discharge pipe assembly 2 comprises a cyclone tee joint, the cyclone tee joint comprises a first water inlet pipe 211 and a second water inlet pipe 212 connected with the side wall of the first water inlet pipe 211 and communicated with the inside of the first water inlet pipe 211, the upper part of the first water inlet pipe 211 is communicated with an upper main water discharge pipe 4, the second water inlet pipe 212 is communicated with a toilet bowl sewage discharge pipe 5, and the lower part of the first water inlet pipe 211 is provided with a first vertical pipe 218; the inner edge of the second inlet pipe 212 is tangent to the inner edge of the first inlet pipe 211, and the communication between the second inlet pipe 212 and the first inlet pipe 211 is a pipe wall cavity 213 with an expanded volume.

In this embodiment, the first water inlet pipe 211 and the second water inlet pipe 212 are integrally injection molded, and an included angle of 91.5 degrees is formed between the first water inlet pipe 211 and the second water inlet pipe 212.

Therefore, when the sewage discharged from the toilet enters the first water inlet pipe 211 along the second water inlet pipe 212, the radius of curvature of the sewage adherence rotational flow can be increased by the arrangement of the pipe wall cavity 213. When the discharge capacity of sewage is great, can effectively increase sewage discharge velocity, 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 211 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 211, its whirl radius is by big dwindling gradually, thereby has improved the discharge velocity of sewage, has reduced the drainage noise simultaneously.

Referring to fig. 7, a pipe cover 216 is disposed on the upper end of the first water inlet pipe 211, and a pipe connector 217 is disposed on the pipe cover 216, and the pipe connector 217 is respectively connected to the first water inlet pipe 211 and the upper main water discharge pipe 4. The lower end of the first water inlet pipe 211 is provided with a first vertical pipe 218, and the first vertical pipe 218 is communicated with the cavity structure of the horizontal pipe drainage assembly 1.

In addition, referring to fig. 5 to 6, since the temperature of the sewage in the upper main drainage pipeline 4 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, an expansion joint 219 is further arranged between the first water inlet pipe 211 and the upper-layer main drainage pipeline 4, and the lower end of the expansion joint 219 is inserted into the pipe joint 217 and is communicated with the pipe joint 217; the upper end of the telescopic joint 219 is communicated with an upper layer of a main drainage pipeline 4; the inner wall of the upper end of the telescopic joint 219 is provided with a sealing ring 2193, and the sealing ring 2193 is abutted with the outer wall of the upper-layer main drainage pipeline 4.

In this embodiment, the expansion joint 219 includes an outer tube 2191 and an inner tube 2192, which are sleeved with each other, the sealing ring 2193 is disposed on the inner wall of the outer tube 2191, and the lower end of the inner tube 2192 is inserted into the tube interface 217.

Therefore, when the pipeline expands with heat and contracts with cold, the upper-layer main drainage pipeline 4 and the outer-layer circular pipe 2191 can slide relatively, so that the deformation of the pipeline caused by the change of the sewage temperature is compensated, and the telescopic range of the telescopic joint 219 can reach 102mm at most. Meanwhile, the sealing ring 2193 can ensure the connection sealing property between the expansion joint 219 and the upper-layer main drainage pipeline 4.

In addition, referring to fig. 8-9, in order to avoid the sewage convection caused by the different rotational flow direction of the sewage entering the first water inlet pipe 211 along the upper main water discharge pipeline 4 and the rotational flow direction of the sewage entering the first water inlet pipe 211 along the second water inlet pipe 212, the water discharge pipe assembly 2 further includes a baffle plate 214, and the baffle plate 214 is disposed at the communication position of the second water inlet pipe 212 and the first water inlet pipe 211. From this, through set up baffle 214 in the intercommunication department for sewage in the second inlet tube 212 can get into first inlet tube 211 according to the direction whirl of setting for, guarantees that the whirl direction of the sewage that gets into in first inlet tube 211 from second inlet tube 212 is the same with the whirl direction of the sewage in first inlet tube 211.

In addition, when the pressure of the water flow entering the first water inlet pipe 211 along the upper main water discharge pipeline 4 is higher than the pressure of the water flow entering the first water inlet pipe 211 along the second water inlet pipe 212, the sewage in the first water inlet pipe 211 may be caused to reversely flow into the second water inlet pipe 212. In order to avoid the above situation, the drain pipe assembly 2 in the present embodiment further includes a pressure stabilizing film 215 disposed at a position where the first water inlet pipe 211 communicates with the second water inlet pipe 212, and the material of the pressure stabilizing film 215 is not particularly limited, and the pressure stabilizing film 215 in the present embodiment is made of a flexible material. When the pressure of the discharged water flow in the first water inlet pipe 211 is greater than the pressure caused by the discharged water flow of the second water inlet pipe 212, the sewage in the first water inlet pipe 211 impacts the pressure stabilizing film 215, and the pressure stabilizing film 215 can prevent the sewage in the first water inlet pipe 211 from being extruded into the second water inlet pipe 212 due to pressure difference, so that the sewage can be stably discharged from the first vertical pipe 218 in a wall-attached rotational flow manner; when the pressure caused by the discharge pressure water flow of the first water inlet pipe 211 is equal to the pressure caused by the discharge pressure water flow of the second water inlet pipe 212, the pressure stabilizing membrane 215 is in a normal assembly state, and the discharge of the pipeline sewage is not influenced; when the discharge pressure water flow in the first water inlet pipe 211 is smaller than the pressure caused by the discharge pressure water flow of the second water inlet pipe 212, the pressure stabilizing film 215 is impacted by the sewage discharged by the second water inlet pipe 212 and is sunken inwards along the radial direction of the first water inlet pipe 211, so that the discharge space of the second water inlet pipe 212 is enlarged, and the final adherent rotational flow of the sewage is ensured to be stably discharged from the first vertical pipe 218. In addition, when the discharge amount of the sewage in the first water inlet pipe 211 attached to the inner wall of the first water inlet pipe 211 and the spiral flow velocity are large, the air flow is disturbed to form a negative pressure suction force, the negative pressure suction force enables the pressure stabilizing film 215 to generate an acting force which is concave inwards along the radial direction of the first water inlet pipe 211, and simultaneously, the sewage performs a spiral circular motion to form a centrifugal reaction force of the pipe wall to the sewage drainage pressure, which is formed by the large water discharge amount, so that the pressure stabilizing film 215 generates an acting force which expands outwards along the radial direction of the first water inlet pipe 211, when the pressure stabilizing film 215 is not arranged, because the negative pressure suction force and the drainage pressure are dispersed on the contact surface of the negative pressure air flow, the pipe wall and the sewage, the negative pressure suction force and the drainage pressure cannot be mutually counteracted, the toilet water seal is easily caused by the negative pressure suction, the toilet water seal fails, the arrangement of the pressure stabilizing film 215 enables the negative pressure suction force and the drainage pressure to act on the pressure stabilizing film 215 together, and the concave acting force, The three forces of the expansion acting force and the rigidity of the pressure stabilizing film 215 are mutually offset, so that the effect of relieving the air pressure fluctuation in the second water inlet pipe 212 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 first inlet tube 211, steady voltage membrane 215 radially outwards expands along first inlet tube 211 to reach the undulant purpose of pressure in lightening second inlet tube 212, increase system damping, reduce the closestool water seal and lead to the risk of losing efficacy because of the malleation splash. When the sewage flow rate of the second water inlet pipe 212 is high, negative pressure is formed in the second water inlet pipe 212, and the negative pressure makes the pressure stabilizing film 215 recess towards the inner side of the second water inlet pipe 212 to prevent the sewage in the first water inlet pipe 211 from being sucked; similarly, when the sewage in the first water inlet pipe 211 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 pressure stabilizing film 215 is recessed towards the inner side of the first water inlet pipe 211 to prevent the sewage in the second water inlet pipe 212 from being sucked into the first water inlet pipe 211 due to the negative pressure.

Referring to fig. 10-14, the horizontal tube drainage assembly 1 includes a first fitting member 11 and a second fitting member 12, wherein the first fitting member 11 and the second fitting member 12 are closed to form a cavity structure; the first fitting 11 and the second fitting 12 are both of a unitary structure. The first assembly part 11 is provided with a first vertical pipe interface 111 close to one side of the water drainage pipe component 2 and a waste water pipe interface 112 close to one side of the water seal component 3; the second assembly member 12 is provided with a second vertical pipe 121 opposite to the first vertical pipe interface 111 and a water storage member 122 opposite to the waste pipe interface 112, and the first vertical pipe interface 111, the waste pipe interface 112, the second vertical pipe 121 and the water storage member 122 are all communicated with the cavity structure.

In addition, a drainage member 13 is further disposed at the second vertical pipe 121 in the cavity structure, and the drainage member 13 enables the wastewater to be discharged in a swirling manner along the tangential direction of the inner wall of the second vertical pipe 121. Specifically, the drainage member 13 is a drainage groove provided on the second fitting 12 and located at the second riser 121.

From this, set up drainage piece 13, make waste water can be along the inner wall tangential direction whirl discharge of second riser 121, when guaranteeing that violently manage the waste water discharge capacity in the drainage component 1 big, still can follow adherence whirl discharge in the second riser 121, reduce the possibility that forms the water stopper, reduce the drainage noise simultaneously.

Referring to fig. 12, the upper edge of the water storage member 122 is higher than the bottom surface of the cavity structure, and is not tangent to the inner wall of the second assembly member 12 and is separated by a certain gap; the bottom of the trap 122 is also provided with metal legs 124.

In this embodiment, the metal leg 124 is L-shaped and is connected to the water container 122 by a snap-fit structure.

Therefore, when the wastewater flowing into the water storage part 122 from the water seal assembly 3 reaches a certain flow, the wastewater can be discharged from the periphery of the upper edge of the water storage part 122 to the cavity, so that the space for discharging the wastewater from the water storage part 122 is increased, and the wastewater can be discharged in time. In addition, by providing the metal leg 124 at the bottom of the water storage member 122, the water storage member 122 can be mounted on the floor slab through the metal leg 124, the water storage member 122 is spaced from the bottom of the floor slab by a certain height, and concrete is poured at the 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 1 of the present invention, wastewater may be deposited on the floor surface, and in order to drain the wastewater deposited on the floor surface into the second vertical pipe 121, the horizontal pipe drainage assembly further comprises an anti-overflow mechanism arranged in the cavity structure and located at the second vertical pipe 121, wherein the anti-overflow mechanism comprises an anti-overflow ball seat 141 and an anti-overflow ball 142; the overflow-preventing ball seat 141 is provided with a water accumulation discharge hole 1411 communicated with the second riser 121, and the overflow-preventing ball 142 is placed on the water accumulation discharge hole 1411; a accumulated water inflow hole 113 is formed in the first assembly 11 at a position corresponding to the accumulated water discharge hole 1411, and the diameter of the accumulated water inflow hole 113 is smaller than that of the anti-overflow ball 142.

Specifically, the spill ball seat 141 is disposed on the inner wall of the second assembly 12; the water inflow hole 113 is located on the same axis as the center of the water discharge hole 1411.

Therefore, the accumulated water discharge hole 1411 formed in the overflow preventing ball seat 141 limits the position of the overflow preventing ball 142 in the horizontal direction, and the overflow preventing ball 142 can move only in the vertical direction between the overflow preventing ball seat 141 and the accumulated water discharge hole 1411 formed in the overflow preventing ball seat 141. When there is accumulated water on the floor surface, the accumulated water can enter through the accumulated water inflow hole 113 and flow out of the accumulated water discharge hole 1411, and then be discharged into the second riser 121; meanwhile, when the overflow of the wastewater occurs, the overflow preventing ball 142 is tightly attached to the accumulated water inflow hole 113 by the buoyancy of the wastewater to seal the accumulated water inflow hole 113, so as to prevent the overflow of the sewage in the second riser 121.

In addition, during the use of the horizontal pipe drainage assembly 1, accumulated water on the ground can flow into gaps on the floor slabs and permeate through the gaps on the lower floor slabs. To prevent this, the outer circumferential surface of the second fitting 12 in this embodiment is further provided with a surrounding waterproof wing ring 123. When the waste water permeates, the waterproof wing ring 123 can prevent the permeated waste water from further permeating into the lower floor slab, and the water stopping effect is achieved.

Referring to fig. 15-20, the water seal assembly 3 comprises a floor drain 31 and a waste pipe 32 detachably connected to the floor drain 31, wherein the waste pipe 32 is communicated with a waste pipe interface 112; the floor drain 31 comprises a floor drain cover 311 arranged on the upper side of the waste water pipe 32 and a connecting pipe 312 arranged on the lower side of the waste water pipe 32, wherein both the floor drain cover 311 and the connecting pipe 312 are detachably connected with the waste water pipe 32; the connecting pipe 312 is connected to the waste pipe 32 and then extends into the cavity of the water storage member 122, and there is a gap between the outer wall of the connecting pipe 312 and the inner wall of the water storage member 122.

Therefore, after the waste water generated by showering enters the floor drain 31, the waste water sequentially passes through the waste water pipe 32 and the connecting pipe 312 and is finally guided to the water storage part 122, along with the continuous rising of the liquid level of the waste water in the water storage part 122, when the liquid level of the waste water in the water storage part 122 is higher than the lowest point of the connecting pipe 312, the liquid level of the waste water forms a water seal at the bottom of the connecting pipe 312, and therefore harmful gas is prevented from entering the connecting pipe 312 and further overflowing outdoors through the floor drain 31.

In this embodiment, when the connection pipe 312 is installed, the connection pipe 312 is inserted into the interior of the waste 32 from the top of the waste 32 and the top of the connection pipe 312 is overlapped on the bottom of the waste 32.

Referring to fig. 15, in order to reduce the possibility of the floor drain 31 being jammed, the waste water entering the floor drain 31 may be mixed with impurities that may cause the jam of the floor drain 31, such as hairs, and the floor drain cover 311 in this embodiment includes a grate 3111, a first filter 3112 and a mounting member 3113, the grate 3111 and the first filter 3112 are detachably connected to the upper side of the mounting member 3113, and the grate 3111 is located above the first filter 3112; the mounting member 3113 is provided with an adjusting member 31132 at a lower side thereof, and the mounting member 3113 is detachably connected to the waste pipe 32 through the adjusting member 31132.

Therefore, when the wastewater enters the floor drain 31 through the perforated strainer 3111, the wastewater is firstly filtered by the perforated strainer 3111, and the wastewater passing through the perforated strainer 3111 is secondly filtered by the first filter screen 3112, so that hair or other impurities in the wastewater are reduced. The adjusting part 31132 may adjust the height of the mounting part 3113 according to various finishing conditions. In some embodiments, the adjusting member 31132 is a manufactured ring structure with certain specifications, and the adjusting member 31132 can be provided in several numbers. Preferably, three adjusting parts 31132 are provided in the present embodiment, and the number of the adjusting parts 31132 can be increased or decreased according to different decoration conditions, so that the height of the floor drain cover 311 in the present embodiment can be adjusted within 2 cm; of course, the adjusting member 31132 may also be made into a shape and specification corresponding to the needs of the customer, so that the height of the mounting member 3113 and thus the height of the floor drain cover 311 can be adjusted by selecting the adjusting member 31132 with a suitable shape and specification according to different decoration conditions.

Referring to fig. 16 to 19, the first filter screen 3112 includes a cover plate support 31121 and a plurality of cover plates 31122 disposed on the cover plate support 31121, the cover plate 31122 includes a sector main body, and a gravity block 311221 is disposed on a lower portion of the sector main body on a side away from a center of the sector; the cover plate support frame 31121 is provided with a positioning strip 311211, the positioning strip 311211 extends downwards, and the bottom end of the positioning strip 311211 is provided with a rotation stop part 311212; the cover sheet 31122 is swingably mounted on the cover sheet support frame 31121.

Specifically, the circular arc edge of the sector main body is provided with a connecting protrusion 311222, the cover plate support frame 31121 is provided with a connecting groove 311214, and the connecting protrusion 311222 is clamped on the connecting groove 311214 in a swinging manner, so that the cover plate 31122 is mounted on the cover plate support frame 31121. A concave 311223 is provided at the center of the sector main body, and the concave 311223 is engaged with the rotation stopper 311212.

Therefore, when drainage is not needed, the gravity block 311221 keeps the cover 31122 in a closed state, when drainage is needed, water automatically converges to the circle center of the cover 31122, and when the water amount is enough, the self gravity of the water pushes the cover 31122 open and flows into the waste pipe 32; after the water is drained, the cover sheet 31122 swings under the action of the gravity block 311221, and when the concave platform 311223 swings to the position corresponding to the rotation stop part 311212, the swing is stopped, and the cover sheet 31122 returns to the closed state. The rivers can push up a plurality of cover plates 31122 simultaneously after putting to central point and assembling, can effectively increase drainage area, and the flow direction of water is the advection, can avoid producing eccentric flow, and then the guarantee rivers discharge smoothly.

Referring to fig. 20, the mounting member 3113 is provided at an upper side thereof with a mounting groove 31131, and the cover plate supporting frame 31121 is provided with a positioning block 311213 engaged with the mounting groove 31131. By placing the positioning block 311213 on the mounting groove 31131, the cover stock 31121 can be mounted on the mounting member 3113.

Referring to fig. 1, the device also comprises a diversion pipe 34 communicated with the washbasin sewage draining pipe 7 and the dry area floor drain 8, wherein the diversion pipe 34 is communicated with the side wall of the waste water pipe 32; the level of the connection between the draft tube 34 and the waste 32 is higher than the level of the connection between the connection tube 312 and the waste 32. In order to increase the water sealing effect, the present embodiment is provided with a sealing ring 35 for sealing at the connection between the waste pipe 32 and the connection pipe 312.

Therefore, by arranging the draft tube 34, the draft tube 34 guides the wastewater generated by the dry floor drain 8 or the washbasin sewage pipe 7 into the water storage member 122 through the connecting tube 312 to supplement the wastewater amount in the water storage member 122, so as to prevent the wastewater in the water storage member 122 from drying up until the wastewater level is lower than the lowest point of the connecting tube 312, thereby preventing the water seal from losing efficacy.

In this embodiment, the flow guide tube 34 is a flat tube. Of course, in other embodiments, the duct 34 may have other shapes, and is not limited herein.

Referring to fig. 15, a second filter 3121 is further included, and the second filter 3121 is detachably coupled to the top of the connection pipe 312. Thus, the second filter screen 3121 can filter the waste water entering the floor drain 31 through the grate 3111 for the third time. Meanwhile, the horizontal height of the communication part of the draft tube 34 and the waste water pipe 32 is higher than the horizontal height of the connection part of the connection pipe 312 and the waste water pipe 32, so the waste water entering the waste water pipe 32 from the draft tube 34 can be filtered by the second filter screen 3121, so as to reduce the waste water impurities entering the floor drain 31 from the draft tube 34.

From this, this floor drain lid 311 and connecting pipe 312 all can be dismantled with waste pipe 32 and be connected, and when the inside jam that takes place of local hourglass system needs the maintenance, the maintainer need not demolish the wall and just can overhaul, only need demolish grate 3111, first filter screen 3112 and second filter screen 3121 and waste pipe 32 in proper order, and is simple and convenient, and overhauls the field of vision good.

The installation of the same-layer drainage system of the non-falling plate for the construction toilet comprises the following steps: s1, an operator positions the horizontal pipe drainage assembly 1 according to the design drawing and places the horizontal pipe drainage assembly 1 at a preset position; s2, after the horizontal pipe drainage assembly 1 is fixed at a corresponding position through a long nail by an operator, a gap of the horizontal pipe drainage assembly 1 is covered by a temporary covering plate; s3, reinforcing the reinforcing bars by an operator and pouring concrete; s4, an operator takes down the temporary covering plate, cleans impurities, confirms the rotational flow direction of sewage in the drain pipe assembly 2, installs the drain pipe assembly 2 on the horizontal pipe drain assembly 1 and fixes the horizontal pipe drain assembly 1 by using glue; s5, an operator inserts the expansion joint 219 into the drainage pipe assembly 2 and coats glue for fixation; s6, an operator confirms the installation direction of the waste water pipe 32 according to a design drawing and installs the waste water pipe 32 on the horizontal pipe drainage assembly 1; s7, after confirming the installation direction, the operator sequentially installs the connecting pipe 312, the second filter screen 3121, the installation part 3113, the first filter screen 3112 and the floor drain cover 311 on the horizontal pipe drainage assembly 1; s8, an operator installs a false wall to hide the pipe fittings.

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. The utility model provides a building bathroom is with not descending board same floor drainage system which characterized in that, including install violently managing drainage subassembly (1) in the floor and communicate respectively violently managing drainage subassembly (1) and be located the drain pipe subassembly (2) and the water seal subassembly (3) of both sides, wherein:

the drainage pipe assembly (2) is communicated with an upper layer main drainage pipeline (4) and a closestool drainage pipe (5);

the water seal assembly (3) comprises a floor drain (31) arranged on a floor slab;

the horizontal pipe drainage assembly (1) is communicated with a lower-layer main drainage pipeline (6), and the horizontal pipe drainage assembly (1) collects waste water discharged from the drainage pipe assembly (2) and the water seal assembly (3) and discharges the waste water through the lower-layer main drainage pipeline (6);

the inner part of the horizontal pipe drainage component (1) is of a flat cavity structure, the bottom surface of the cavity structure is obliquely arranged, and the height of the cavity structure close to one side of the water seal component (3) is higher than that of the cavity structure close to one side of the drainage pipe component (2);

the horizontal pipe drainage assembly (1) comprises a first assembly part (11) and a second assembly part (12), wherein the first assembly part (11) and the second assembly part (12) are closed to form the cavity structure; the first assembly part (11) and the second assembly part (12) are of an integrated structure;

the first assembly part (11) is provided with a first vertical pipe interface (111) close to one side of the drainage pipe assembly (2) and a waste water pipe interface (112) close to one side of the water seal assembly (3); a second vertical pipe (121) opposite to the first vertical pipe connector (111) and a water storage part (122) opposite to the waste water pipe connector (112) are arranged on the second assembly part (12), and the first vertical pipe connector (111), the waste water pipe connector (112), the second vertical pipe (121) and the water storage part (122) are communicated with the cavity structure;

a drainage piece (13) is further arranged at the position of the second vertical pipe (121) in the cavity structure, and the drainage piece (13) enables waste water to be discharged in a rotational flow mode along the tangential direction of the inner wall of the second vertical pipe (121); the drainage piece (13) is a drainage groove which is arranged on the second assembly piece (12) and is positioned at the second vertical pipe (121);

the drainage pipe assembly (2) comprises a rotational flow tee joint, the rotational flow tee joint comprises a first water inlet pipe (211) and a second water inlet pipe (212) which is connected with the side wall of the first water inlet pipe (211) and is communicated with the interior of the first water inlet pipe, the upper portion of the first water inlet pipe (211) is communicated with the upper layer main drainage pipeline (4), the second water inlet pipe (212) is communicated with the toilet bowl drainage pipe (5), a first vertical pipe (218) is arranged at the lower portion of the first water inlet pipe (211), and the first vertical pipe (218) is communicated with the first vertical pipe connector (111); the inner edge of the second water inlet pipe (212) is tangent to the inner edge of the first water inlet pipe (211);

the water inlet pipe is characterized by further comprising a pressure stabilizing film (215) arranged at the communication position of the second water inlet pipe (212) and the first water inlet pipe (211), wherein the pressure stabilizing film (215) is made of flexible materials.

2. A drainage system according to claim 1, wherein the communication between the second inlet pipe (212) and the first inlet pipe (211) is an expanded volume pipe wall cavity (213).

3. A drainage system according to claim 1, wherein the first inlet pipe (211) is a funnel-shaped structure with a wide top and a narrow bottom.

4. A drainage system according to claim 1, wherein the drainage pipe assembly (2) further comprises a baffle (214), the baffle (214) being arranged at the communication of the second inlet pipe (212) with the first inlet pipe (211).

5. A drainage system according to claim 1, wherein the first inlet pipe (211) is injection moulded in one piece with the second inlet pipe (212).

6. A drainage system according to claim 1, wherein the upper end of the first water inlet pipe (211) is provided with a pipe cover (216), the pipe cover (216) is provided with a pipe interface (217), and the pipe interface (217) is respectively communicated with the first water inlet pipe (211) and the upper layer main drainage pipeline (4).

7. The drainage system according to claim 6, further comprising an expansion joint (219) arranged between the first water inlet pipe (211) and the upper layer main drainage pipeline (4), wherein the lower end of the expansion joint (219) is inserted into the pipe joint (217) and communicated with the first water inlet pipe (211); the upper end of the telescopic joint (219) is communicated with an upper-layer main drainage pipeline (4); the inner wall of the upper end of the telescopic joint (219) is provided with a sealing ring (2193), and the sealing ring (2193) is abutted to the outer wall of the upper-layer main drainage pipeline (4).

8. A drainage system according to claim 1, wherein the water seal assembly (3) further comprises a waste pipe (32) detachably connected to the floor drain (31), wherein:

the waste pipe (32) is communicated with the waste pipe interface (112);

the floor drain (31) comprises a floor drain cover (311) arranged on the upper side of the waste water pipe (32) and a connecting pipe (312) arranged on the lower side of the waste water pipe (32), and the floor drain cover (311) and the connecting pipe (312) are detachably connected with the waste water pipe (32);

the connecting pipe (312) is connected with the waste water pipe (32) and then extends into the cavity of the water storage part (122), and gaps are reserved between the outer wall of the connecting pipe (312) and the inner wall of the water storage part (122).

9. The drainage system according to claim 8, wherein the floor drain cover (311) comprises a grate (3111), a first filter screen (3112) and a mounting part (3113), wherein:

the grate (3111) and the first filter screen (3112) are detachably connected to the upper side of the mounting part (3113), and the grate (3111) is located above the first filter screen (3112);

the downside of installed part (3113) is equipped with regulating part (31132), installed part (3113) through regulating part (31132) with waste pipe (32) detachable connection.

10. The drainage system according to claim 9, wherein the first filter screen (3112) comprises a cover sheet support frame (31121) and a plurality of cover sheets (31122) disposed on the cover sheet support frame (31121), wherein:

the cover plate (31122) comprises a sector main body, and a gravity block (311221) is arranged at the lower part of one side of the sector main body, which is far away from the center of the sector;

a positioning strip (311211) is arranged on the cover plate supporting frame (31121), the positioning strip (311211) extends downwards, and a rotation stopping part (311212) is arranged at the bottom end of the positioning strip (311211);

the cover plate (31122) is swingably mounted on the cover plate support frame (31121).

11. The drainage system of claim 10, wherein the circular arc edge of the sector-shaped body is provided with a coupling protrusion (311222), the flap support bracket (31121) is provided with a coupling groove (311214), and the coupling protrusion (311222) is swing-snapped into the coupling groove (311214).

12. A drainage system according to claim 11, wherein a recess (311223) is provided at the centre of the sector-shaped body, the recess (311223) engaging the rotation stop (311212).

13. The drainage system of claim 10, wherein the mounting part (3113) is provided at an upper side thereof with a mounting groove (31131), and the cover supporting bracket (31121) is provided with a positioning block (311213) engaged with the mounting groove (31131).

14. The drainage system according to claim 8, further comprising a second filter screen (3121), the second filter screen (3121) being detachably connected to a top of the connection pipe (312).

15. The drainage system according to claim 8, further comprising a diversion pipe (34) communicating the washbasin drain pipe (7) and the dry floor drain (8), wherein the diversion pipe (34) is communicated with the side wall of the waste water pipe (32).

16. A drainage system according to claim 15, wherein the level at which the draft tube (34) communicates with the waste (32) is higher than the level at which the connecting tube (312) connects with the waste (32).

17. A drainage system according to claim 16, wherein the connection of the connection pipe (312) to the waste (32) is provided with a sealing ring (35).

18. A drainage system according to claim 1, wherein the upper edge of the water retaining member (122) is higher than the bottom surface of the chamber structure and is spaced from the inner wall of the second fitting member (12) by a gap.

19. A drainage system according to claim 1, wherein the bottom of the water trap (122) is provided with metal legs (124).

20. A drainage system according to claim 1, wherein the outer peripheral surface of the second fitting (12) is further provided with a surrounding water-resistant wing ring (123).

21. A drainage system according to claim 1, wherein an anti-back-overflow mechanism is further provided within the cavity structure at the second riser (121), wherein:

the overflow preventing mechanism comprises an overflow preventing ball seat (141) and an overflow preventing ball (142);

the overflow-preventing ball seat (141) is provided with a water accumulation discharge hole (1411) communicated with the second vertical pipe (121), and the overflow-preventing ball (142) is placed on the water accumulation discharge hole (1411);

a accumulated water inflow hole (113) is further formed in the position, corresponding to the accumulated water discharge hole (1411), of the first assembly part (11), and the diameter of the accumulated water inflow hole (113) is smaller than that of the anti-overflow ball (142);

the center of the accumulated water inflow hole (113) and the center of the accumulated water discharge hole (1411) are located on the same axis.