CN206607641U - Drain structure of toilet and skyscraper - Google Patents

Abstract

The utility model is related to construction drainage construction applications, it is intended to which there is provided a kind of drain structure of toilet and skyscraper for the problem of solving back foul occur when drainage system in the prior art realizes standpipe draining and the exclusion of caisson of toilet ponding at the same time.Wherein, drain structure of toilet includes having reeded concrete slab and floor plate.Water-drainage tube part is combined with concrete slab.Ground missing part is combined with floor plate.The groove bottom of groove is domatic, and the first hole is located at the minimum point of the groove bottom of groove.Water-drainage tube part includes upper pipe fitting and lower pipe fitting.Water-drainage tube part is used for row caisson ponding.Drain structure of toilet also includes the upper riser and lower standing tube for being connected to water-drainage tube part two ends, for standpipe draining.The beneficial effects of the utility model are and can to separate the passage when being not excluded for caisson of toilet ponding, it is to avoid standpipe back foul while realize the function that standpipe draining, caisson of toilet ponding are excluded.

Description

Drain structure of toilet and skyscraper

Technical field

The utility model is related to construction drainage construction applications, in particular to a kind of drain structure of toilet.This practicality It is new to further relate to a kind of skyscraper for possessing the drain structure of toilet.

Background technology

Toilet needs the draining realized to have the standpipe draining of each interlayer, the floor drain draining of accomodation ground and toilet heavy Case ponding is excluded.

When existing drain structure of toilet realizes standpipe draining and the exclusion of caisson of toilet ponding at the same time, standpipe draining Foul smell in passage can exclude passage from same lamination water and return out to space, influence air quality nearby.

Utility model content

The utility model aims to provide a kind of drain structure of toilet, to solve existing drain structure of toilet at the same time The problem of there is back foul when processing standpipe draining and the exclusion of caisson of toilet ponding.

Another object of the present utility model is to provide a kind of skyscraper for possessing above-mentioned drain structure of toilet.

What embodiment of the present utility model was realized in：

A kind of drain structure of toilet, it includes the reeded concrete slab of tool, and above concrete slab and covers The floor plate of slot opening.The bottom wall of concrete slab is provided with the first hole, and floor plate is provided with the second hole corresponding with the first hole Hole.Water-drainage tube part is combined with first hole.Floor plate is additionally provided with the 3rd hole with the second hole separately, the 3rd hole It is combined with ground missing part.The groove bottom of groove is domatic, and the first hole is located at the minimum point of the groove bottom of groove.Water-drainage tube part bag Include pipe fitting and lower pipe fitting.Upper pipe fitting include with first passage the first body and from the top of the first tube wall radially Stretch out the annular flange to be formed.Lower pipe fitting includes the second body and is connected to the section of the second body inside upper part for L-shaped Annular wall, annular wall is connected the annular chamber for surrounding opening upwards with the top of the second body.The medial surface of annular wall and second The medial surface of body bottom surrounds second channel jointly.First body is inserted from the top down in second channel and annular flange is covered The opening of annular chamber.Annular flange has the first through hole of connection annular chamber, and annular wall is offered close to the side wall of second channel Connect the second through hole of second channel and annular chamber.Annular piston is sliding combined with annular chamber, and annular piston passes through spring It is supported in the bottom wall of annular wall.Annular chamber is separated into close to the upper chamber of annular flange and away from annular flange by annular piston Lower chambers.Annular piston is logical between the second through hole and first through hole to separate positioned at the top of the second through hole in its natural state Road, and the lower section of the second through hole can be slided down in the presence of external force, so that first through hole is connected with the second through hole.Defend Drain structure also includes upper riser and lower standing tube between life.Upper riser is upper through the first passage of the second through hole and the upper pipe fitting of connection End opening.The lower ending opening of the second channel of the lower pipe fitting of lower standing tube connection.

The drain structure of toilet of the present embodiment can be used for standpipe draining simultaneously and caisson of toilet ponding is excluded.Manage thereon The upper end open connection upper riser of the first passage of part, the lower ending opening connection lower standing tube of lower pipe fitting, upper riser and lower standing tube are logical First passage, second channel connection are crossed, standpipe draining is realized.Caisson of toilet ponding can flow into the upper of annular chamber from first through hole Chamber, in the presence of the gravity and impulsive force of water, annular piston overcomes the support force of spring and slides down to the second through hole Under.Now first through hole is connected with the second through hole, and the is flowed into from the second through hole by upper chamber from first through hole with lamination water In two passages, and drain downwards.After same lamination water is drained, piston under the support force of spring upward sliding to the second through hole it On, to separate the passage between first through hole and the second through hole so that the foul smell in second channel can not be returned out from first through hole, Influence the air quality in space.

Further：

The bottom wall of annular wall is provided with third through-hole.

Further：

Upper pipe fitting also includes valve plate, and the lower end of the first body is connected with two relative hangers, and valve plate passes through through two The bearing pin of hangers is rotatably assorted at the lower ending opening of the first body.Travelling gear has been respectively fixedly connected in the two ends of bearing pin.Under piston End is connected with two relative drive links, and two drive links are each passed through third through-hole, and drive link away from annular piston one End is provided with the driving rack for being used for being engaged with travelling gear.When annular piston in the raw or positioned at its nature it Under position when, the normal of valve plate perpendicular to upper pipe fitting axis so that the lower ending opening of upper pipe fitting is opened to maximum.Work as annular Piston upwards are to when exceeding its nature position, and driving rack engages the rotation of drive valve plate with travelling gear to subtract The lower ending opening of small upper pipe fitting.

Further：

Ground missing part connects the first passage of upper pipe fitting by the connecting tube with U section.

Further：

Support column is supported by between the groove bottom and floor plate of groove.

Further：

The lower end of lower pipe fitting is removably connected with up big and down small taper pipeline section, and the lower end of taper pipeline section is connected with straight tube Section.

Further：

The upper surface of annular flange be both sides it is high, it is middle it is low catchment it is domatic, first through hole be arranged at catchment it is domatic most Lower.

Further：

The upper end of upper pipe fitting upwardly extends to form linkage section, and the side of upper linkage section is communicated with branch pipe.

Further：

First through hole has multiple, and multiple first through hole are uniformly distributed along the circumference of annular flange.

A kind of skyscraper, it includes any one foregoing drain structure of toilet.

In summary, the drain structure of toilet in the present embodiment, which has, can realize that standpipe draining, toilet are sunk simultaneously The function that case ponding is excluded, and the passage can be separated when being not excluded for caisson of toilet ponding, it is to avoid standpipe back foul.This implementation Further embodiment in example, which also has, can avoid standpipe from water occur during drainage jam excluding from caisson of toilet ponding Passage returns out and reduces upper strata displacement when drainage jam occurs in standpipe, realizes the effect for dredging and eliminating stifled stagnant water.

Skyscraper in the present embodiment is likewise supplied with the effect above due to possessing above-mentioned drain structure of toilet.

Brief description of the drawings

In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 is the structural representation of the skyscraper in the utility model embodiment；

Fig. 2 is the structural representation of the drain structure of toilet in Fig. 1；

Fig. 3 is the structural representation of the water-drainage tube part in Fig. 2；

Fig. 4 is the structural representation of the upper pipe fitting in Fig. 3；

Fig. 5 is the structural representation of the lower pipe fitting in Fig. 3.

Icon：010- water-drainage tube parts；10- drain structure of toilet；The upper pipe fittings of 100-；11- concrete slabs；110- first is managed Body；12- floor plates；120- annular flanges；130- valve plates；131- counterweights；140- hangers；150- bearing pins；151- travelling gears； The upper linkage sections of 160-；170- branch pipes；20- skyscrapers；Pipe fitting under 200-；The bodys of 210- second；220- annular walls；221- sides Wall；222- bottom walls；230- locating parts；240- annular pistons；250- drive links；251- driving racks；260- springs；400- tapers Pipeline section；500- straight lengths；600- support columns；710- ground missing part；720- connecting tubes；800- upper risers；900- lower standing tubes；C1- is recessed Groove；The holes of d1- first；The holes of d2- second；The holes of d3- the 3rd；K1- first through hole；The through holes of k2- second；K3- third through-holes； P1- catchments domatic；Q1- annular chambers；Q2- upper chamber；Q3- lower chambers；T1- first passages；T2- second channels.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be arranged and designed with a variety of configurations.

Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit requirement The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.

, it is necessary to explanation in description of the present utility model, if occur term " " center ", " on ", " under ", " left side ", The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " interior ", " outer " are based on orientation shown in the drawings or position Relation, or the orientation usually put when using of the utility model product or position relationship, are for only for ease of description this reality Described with new with simplified, rather than indicate or imply that the device or element of meaning must be with specific orientation, with specific Azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.If in addition, occurring in description of the present utility model Term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.

If being not offered as requiring part in addition, occurring the term such as term " level ", " vertical " in description of the present utility model Abswolute level or pendency, but can be slightly tilted.As " level " only refers to its direction with respect to more level for " vertical ", It is not to represent that the structure must be fully horizontal, but can be slightly tilted.

In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, if there is art Language " setting ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or detachably Connection, or be integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, centre can also be passed through Medium is indirectly connected to, and can be the connection of two element internals.For the ordinary skill in the art, can specific feelings Condition understands concrete meaning of the above-mentioned term in the utility model.

Embodiment

Fig. 1 is the structural representation of the skyscraper 20 in the present embodiment；Fig. 2 is the drain structure of toilet 10 in Fig. 1 Structural representation.The drain structure of toilet 10 referred in Fig. 2, the present embodiment includes the concrete slab with groove c1 11 and positioned at the top of concrete slab 11 and cover the floor plates 12 of groove c1 openings；The bottom wall 222 of concrete slab 11 is provided with first Hole d1, floor plate 12 is provided with second hole d2 corresponding with the first hole d1；Water-drainage tube part is combined with first hole d1 010；Floor plate 12, which is additionally provided with the 3rd hole d3 with the second hole d2 separately, the 3rd hole d3, is combined with ground missing part 710； Groove c1 groove bottom is domatic, and the first hole d1 is located at the minimum point of groove c1 groove bottom.Health in the present embodiment Between drain structure 10 also include upper riser 800 and lower standing tube 900；Upper riser 800 is through the second through hole k2 and connects upper pipe fitting 100 First passage t1 upper end open；The second channel t2 of the lower pipe fitting 200 of the connection of lower standing tube 900 lower ending opening.Preferably, it is recessed Support column 600 is supported by between groove c1 groove bottom and floor plate 12, to support floor plate 12.

Refer to the lower standing tube 900 of the drain structure of toilet 10 on the upper strata of skyscraper 20 in Fig. 1, the present embodiment Connected with the upper riser 800 of the drain structure of toilet 10 of lower floor, form total discharge pipe line of this skyscraper 20.

Fig. 3 is the structural representation of the water-drainage tube part 010 in Fig. 2.Refer to the water-drainage tube part 010 in Fig. 3, the present embodiment Including upper pipe fitting 100 and lower pipe fitting 200.Upper pipe fitting 100 and the lower one side of pipe fitting 200 are used to connect the foregoing He of upper riser 800 Lower standing tube 900, realizes standpipe draining；On the other hand the exclusion of caisson of toilet ponding can also be realized.Being presented below can Realize the embodiment of the structure, the structure of lower pipe fitting 200 and both attachment structures of the upper pipe fitting 100 of the drain function.

Fig. 4 is the structural representation of the upper pipe fitting 100 in Fig. 3.The upper pipe fitting 100 that please be participated in Fig. 3, the present embodiment includes The first body 110 with first passage t1 and extend radially outward the annular to be formed from the top of the outer wall of the first body 110 Flange 120.There is annular flange 120 first through hole k1, first through hole k1 to run through its upper and lower end face.It is preferred that, annular flange 120 Upper surface for both sides are high, the middle low domatic p1 that catchments, first through hole k1 is arranged at the lowest part for the domatic p1 that catchments.First leads to Hole k1 has multiple, and circumferences of multiple first through hole k1 along annular flange 120 is uniformly distributed.In a preferred side of the present embodiment In case, the upper end of upper pipe fitting 100 upwardly extends to form linkage section 160, and the side of upper linkage section 160 is communicated with branch pipe 170.Ground Missing part 710 connects the first passage t1 of upper pipe fitting 100 by branch pipe 170 by the connecting tube 720 with U section.

Fig. 5 is the structural representation of the lower pipe fitting 200 in Fig. 3.The lower pipe fitting 200 referred in Fig. 4, the present embodiment includes Second body 210 includes side with annular wall 220 of the section of the inside upper part of the second body 210 for L shapes, annular wall 220 is connected to Wall 221 and bottom wall 222.Annular wall 220 is connected the annular chamber q1 for surrounding opening upwards with the top of the second body 210.Annular wall 220 medial surface and the medial surface of the bottom of the second body 210 surround second channel t2 jointly.Annular wall 220 is close to second channel T2 side wall 221 offers connection second channel t2 and annular chamber q1 the second through hole k2.Ring is sliding combined with annular chamber q1 Shape piston 240, and annular piston 240 is supported in the bottom wall 222 of annular wall 220 by spring 260.Annular piston 240 is by annular Chamber q1 is separated into upper chamber q2 and lower chambers q3.Further, upper chamber q2 side wall 221 is fixedly connected with for limiting ring The locating part 230 of the upper extreme position of shape piston 240.

Referring again to Fig. 3, the first body 110 is inserted from the top down in second channel t2 and annular flange 120 covers ring Shape chamber q1 opening.The first through hole k1 connection annular chambers q1 of annular flange 120.Upper chamber q2 is close to annular flange 120.

Annular piston 240 in the present embodiment is located at the second through hole k2 top to separate the second through hole in its natural state Passage between k2 and first through hole k1, and the second through hole k2 lower section can be slided down in the presence of external force, so that First through hole k1 and the second through hole k2 connections.For example, when ponding from the first through hole k1 of annular flange 120 flows into upper chamber q2 Afterwards, in the presence of the gravity and impulsive force of water, the position that annular piston 240 is slided down under the second through hole k2, now Second through hole k2 connection first through hole k1, upper chamber q2 and second channel t2, ponding can pass through upper chamber from first through hole k1 Q2, second channel t2 is flow to from the second through hole k2, then discharge downwards, so as to realize the exclusion of caisson of toilet ponding.Work as product After water is drained, annular piston 240 in the presence of the support force of spring 260 upward sliding on the second through hole k2；Now, Separated between one through hole k1 and the second through hole k2 by annular piston 240, it is ensured that the foul smell in second channel t2 holes is from first through hole k1 Return out, influence the air quality of peripheral space.

Continuing with referring to Fig. 3, Fig. 5, in the present embodiment, it is preferred that the bottom wall 222 of annular wall 220 is additionally provided with threeway Hole k3.Third through-hole k3 main purpose is set to be to prevent when excluding caisson of toilet ponding from first through hole k1 second The water for occurring drainage jam in passage t2 is returned out from the second through hole k2 by upper chamber q2 from first through hole k1.It is being not provided with During three through hole k3, second is located in the presence of gravity of the annular piston 240 when caisson of toilet ponding is excluded and impulsive force When under through hole k2, if occurring drainage jam phenomenon in second channel t2, substantial amounts of water and can not at present be arranged and rest on draining When in pipe fitting 010, these water may be flowed into from the second through hole k2, be flowed out by upper chamber q2 from first through hole k1.Obviously, This is not allow to occur.And third through-hole k3 is provided with the present embodiment, when occurring drainage jam phenomenon in second channel t2, When substantial amounts of water and can not at present be arranged and rested in water-drainage tube part 010, these water first can enter lower chambers from third through-hole k3 Q3, so that, push up annular piston 240 so that the stream between the closing of annular piston 240 first through hole k1 and the second through hole k2 Road, it is to avoid the water being detained in second channel t2 returns out first through hole k1.

Continuing with referring to Fig. 3, Fig. 4, Fig. 5, in the present embodiment, it is preferred that upper pipe fitting 100 also includes valve plate 130, first The lower end of body 110 is connected with two relative hangers 140, and valve plate 130 is rotated by the bearing pin 150 through two hangers 140 At the lower ending opening for being matched with the first body 110；Travelling gear 151 has been respectively fixedly connected in the two ends of bearing pin 150.Piston is connected There are two relative drive links 250, two drive links 250 are each passed through third through-hole k3, and drive link 250 is away from annular piston 240 one end is provided with the driving rack 251 for being used for being engaged with travelling gear 151.Alternatively, drive link 250 passes through spring 260, to also serve as the guide frame of spring 260.When position of the annular piston 240 in the raw or under its nature When putting, the normal of valve plate 130 perpendicular to upper pipe fitting 100 axis so that the lower ending opening of upper pipe fitting 100 is opened to maximum；When When annular piston 240 is moved up to more than its nature position, driving rack 251 engages band with travelling gear 151 Dynamic valve plate 130 rotates to reduce the lower ending opening of upper pipe fitting 100.When driving rack 251 and travelling gear 151 are not engaged, valve plate 130 normal perpendicular to upper pipe fitting 100 axis so that the lower ending opening of upper pipe fitting 100 is opened to maximum, it is ensured that maximum Drainage speed；When there is drainage jam in second channel t2, stagnant water is blocked up from third through-hole k3 enters lower chambers q3, is promoted The upward sliding of annular piston 240, on the one hand closes first through hole k1 and the second through hole k2 passage, it is to avoid water is from the second through hole k2 Return out；Other direction, the annular piston 240 of upper cunning drives the drive link 250 being connected on annular piston 240 up, by even The driving rack 251 that is connected to the one end of drive link 250 away from annular piston 240 and be connected to bearing pin 150 travelling gear 151 it Between engagement drive bearing pin 150 connection valve plate 130 rotate, to reduce the openings of sizes of the first pipe fitting lower end, thus reduce top The amount of the water flowed down, gives the time that the stifled stagnant water of lower section is drained, and realization is dredged and eliminated stifled stagnant water, draining is replied just Normal effect.The nature finger ring shape piston 240 that the place is said is not by the gravity of arranged ponding and acting on for impulsive force, only State under its deadweight and the support of the support force of spring 260.

Further embodiment in the present embodiment, which also has, can avoid standpipe from water occur during drainage jam from health Between caisson ponding exclude passage and return out and reduce upper strata displacement when drainage jam occurs in standpipe, promote the row of stifled stagnant water Walk.

Further, the side relative with bearing pin 150 of valve plate 130 is fixedly connected with counterweight 131.In its natural state, valve The side of the connection counterweight 131 of plate 130 is located at bottom, valve plate 130 is kept full-gear, i.e., in making upper pipe fitting 100 Lower ending opening is opened to maximum state.Ensure that general state can keep maximum drainage speed.

Up big and down small taper pipeline section is removably connected with continuing with the lower end referring to Fig. 3, the lower pipe fitting 200 of the present embodiment 400, the lower end of taper pipeline section 400 is connected with straight length 500.It is set to be detachably connected at this and facilitates the structures such as drive link 250 Installation.

In summary, the drain structure of toilet 10 in the present embodiment, which has, can realize standpipe draining and toilet simultaneously The function that caisson ponding is excluded, and the passage can be separated when being not excluded for caisson of toilet ponding, it is to avoid standpipe back foul.This reality Applying the further embodiment in example and also having can avoid standpipe from water occur during drainage jam arranging from caisson of toilet ponding Returned out except passage and reduce upper strata displacement when drainage jam occurs in standpipe, realize the effect for dredging and eliminating stifled stagnant water.

Skyscraper 20 in the present embodiment is likewise supplied with the effect above due to possessing above-mentioned drain structure of toilet 10.

Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.

Claims (10)

1. a kind of drain structure of toilet, it is characterised in that：

The drain structure of toilet includes having reeded concrete slab, and above the concrete slab and covers described The floor plate of slot opening；The bottom wall of the concrete slab is provided with the first hole, and the floor plate is provided with and first hole Corresponding second hole；Water-drainage tube part is combined with first hole；The floor plate is additionally provided with and the second hole phase Ground missing part is combined with 3rd hole at interval, the 3rd hole；The groove bottom of the groove is domatic, first hole At the minimum point of the groove bottom of the groove；

The water-drainage tube part includes upper pipe fitting and lower pipe fitting；The upper pipe fitting includes the first body with first passage and from institute The top for stating the first tube wall extends radially outward the annular flange to be formed；The lower pipe fitting includes the second body and connection It is the annular wall of L-shaped in the section of the second body inside upper part, the annular wall is connected with the top of second body Surround the annular chamber of opening upwards；The medial surface of the annular wall and the medial surface of the second body bottom surround second jointly Passage；First body is inserted from the top down in the second channel and the annular flange covers opening for the annular chamber Mouthful；The annular flange has the first through hole for connecting the annular chamber, side wall of the annular wall close to the second channel Offer the second through hole for connecting the second channel and the annular chamber；Annular piston is sliding combined with the annular chamber, And the annular piston by spring supporting in the bottom wall of the annular wall；The annular chamber is separated into and leaned on by the annular piston The upper chamber of the nearly annular flange and the lower chambers away from the annular flange；The annular piston is located in its natural state The top of second through hole to separate the passage between second through hole and the first through hole, and can external force work The lower section of second through hole is slided down under, so that the first through hole is connected with second through hole；

The drain structure of toilet also includes upper riser and lower standing tube；The upper riser is through second through hole and connects institute State the upper end open of the first passage of pipe fitting；The lower standing tube connects the lower ending opening of the second channel of the lower pipe fitting.

2. drain structure of toilet according to claim 1, it is characterised in that：

The bottom wall of the annular wall is provided with third through-hole.

3. drain structure of toilet according to claim 2, it is characterised in that：

The upper pipe fitting also includes valve plate, and the lower end of first body is connected with two relative hangers, and the valve plate passes through Bearing pin through two hangers is rotatably assorted at the lower ending opening of first body；The two ends of the bearing pin are solid respectively It is connected with travelling gear；

The piston is connected with two relative drive links, and two drive links are each passed through the third through-hole, and The one end of the drive link away from the annular piston is provided with the driving rack for being used for being engaged with the travelling gear；

When position of the annular piston in the raw or under its nature, the normal of the valve plate is vertical In the axis of the upper pipe fitting, so that the lower ending opening of the upper pipe fitting is opened to maximum；When the annular piston is moved upwards To when exceeding its nature position, the driving rack engages the drive valve plate rotation with the travelling gear to subtract The lower ending opening of the small upper pipe fitting.

4. the drain structure of toilet according to claim any one of 1-3, it is characterised in that：

Described ground missing part connects the first passage of the upper pipe fitting by the connecting tube with U section.

5. the drain structure of toilet according to claim any one of 1-3, it is characterised in that：

Support column is supported by between the groove bottom of the groove and the floor plate.

6. drain structure of toilet according to claim 1, it is characterised in that：

The lower end of the lower pipe fitting is removably connected with up big and down small taper pipeline section, and the lower end of the taper pipeline section is connected with directly Pipeline section.

7. drain structure of toilet according to claim 1, it is characterised in that：

The upper surface of the annular flange be both sides it is high, it is middle it is low catchment domatic, the first through hole is arranged at described catchment Domatic lowest part.

8. drain structure of toilet according to claim 1, it is characterised in that：

The upper end of the upper pipe fitting upwardly extends to form linkage section, and the side of the upper linkage section is communicated with branch pipe.

9. drain structure of toilet according to claim 1, it is characterised in that：

The first through hole has multiple, and circumference of multiple first through hole along the annular flange is uniformly distributed.

10. a kind of skyscraper, it is characterised in that：

The skyscraper includes the drain structure of toilet as described in claim any one of 1-9.