CN106677322B - Floating bell jar formula sealing structure for water - Google Patents

Abstract

The present invention provides a kind of floating bell jar formula sealing structure for water, the floating bell jar including Water sealing box, in Water sealing box；Floating bell jar cooperation seals the drainpipe below Water sealing box, forms upper layer water seal, and lower layer's water seal is water seal type floor drain core or trap；The side of Water sealing box extends or is connected with the connecting chamber for deviateing drainpipe, floating bell jar also correspondingly extend or be connected with deviate drainpipe, float on floating member in connecting chamber；The inner surface at the top of outer surface and the Water sealing box at the top of floating bell jar, at least one is equipped with protrusion, so that floating bell jar and floating member are able to maintain lateral attitude when floating.Water seal arrangement setting protrusion is to maintain lateral attitude, ensure that wet suction adhesion will not occur at the top of floating bell jar and Water sealing box, it is able to maintain additional bell jar and the adhesion of Water sealing box apex suction again, after draining, the time that floating bell jar formula structure falls can rationally be controlled, so as to obtain required water seal depth, the requirement of drainage performance and fall time is taken into account.

Description

Floating bell jar formula sealing structure for water

Technical field

The present invention relates to building technical field of drainage, and in particular to a kind of floating bell jar formula sealing structure for water.

Background technique

The pond of existing family kitchen and its sewer mouth, the urinal of toilet, floor drain and its sewer mouth, slightly There is blocking, sewage just overflows outside pond.Sometimes for preventing blocking from usually the floating bell jar of floor drain is taken away, although in this way, can Solve the problems, such as that part sundries blocks, but the foul smell in sewer pipe is emerged very greatly, is polluted environment, is influenced people's health.

Presently, there are a variety of odour-proof floor drains, there is the floor drain of floating bell jar structure, and when sewage is discharged into, floating bell jar can float Draining, after draining, floating bell jar falls seal drainage pipeline again, to achieve the effect that deodorization.However, floating when draining Bell jar can tightly be adsorbed in the bottom wall of Water sealing box, when so as to cause draining again, floating bell jar under the suction function of drainpipe It is difficult to float.

The patent CN201410306873.5 of applicant discloses a kind of multilayer sealing structure for water, referring to FIG. 1, Fig. 1 is one The schematic diagram of kind multilayer water seal floor drain.

As shown in Figure 1, the multilayer water seal floor drain includes two layers of water seal, wherein upper layer water seal is floating bell jar formula structure, is floated Dynamic bell-jar structure includes Water sealing box 1 ', the floating bell jar 2 ' in Water sealing box 1 '；Wherein lower layer's water seal is set to and floating clock In drainpipe 3 ' below cover 2 '.The side of Water sealing box 1 ' is connected with the connecting chamber 4 ' for deviateing drainpipe 3 ', is connected to chamber in Fig. 1 Room 4 ' also belongs to a part of 1 ' inner cavity of Water sealing box, and floating bell jar 2 ' is also correspondingly connected the additional bell jar for deviateing drainpipe 3 ' 5 ', which floats in connecting chamber 4 '.

Using this structure, when the sewage in Water sealing box 1 ' flows away quickly through drainpipe 3 ', due to floating bell jar 2 ' It is arranged concentrically with drainpipe 3 ', and connecting chamber 4 ', additional eccentric setting of the bell jar 5 ' with 3 ' relatively large distance of drainpipe, therefore In Water sealing box 1 ' close to 2 ' side of floating bell jar sewage because apart from drainpipe 3 ' compared with close due to flow velocity it is very fast, it is remote in connecting chamber 4 ' Sewage from 2 ' side of floating bell jar with a distance from drainpipe 3 ' farther out due to flow velocity it is slower.

Therefore, in the whole chamber that Water sealing box 1 ', connecting chamber 4 ' form, buoyancy of the connecting chamber 4 ' to floating member 5 ' Distance greater than Water sealing box 1 ' to the buoyancy of floating bell jar 2 ', and apart from drainpipe 3 ' is bigger, the buoyancy is bigger.It is then fast in sewage During speed flowing, floating bell jar 2 ' can be due to the imbalance of buoyancy to 1 ' outside inclination of Water sealing box, can be to avoid floating clock Cover 2 ' is tightly adsorbed in the bottom wall of Water sealing box 1 ' under the suction function of drainpipe 3 ', improves the operation is stable of water seal floor drain Property.

Although this kind of water seal arrangement produces certain technical effect, in use, floating bell jar 2 ' is found There is fluctuation when the water seal depth at place, sometimes up to less than water level requirement.

In view of this, it would be highly desirable in view of the above technical problems, design be advanced optimized to water seal arrangement, negative pressure is being avoided to inhale Under the premise of attached raising job stability, so that the water seal effect at floating bell jar is more preferably.

Summary of the invention

In order to solve the above technical problems, the present invention provides a kind of floating bell jar formula sealing structure for water, the floating bell jar formula water seal Structure can meet the requirement of water seal effect under the premise of avoiding negative-pressure adsorption from providing job stability.

The present invention provides a kind of floating bell jar formula sealing structure for water, the floating clock including Water sealing box, in the Water sealing box Cover；The floating bell jar cooperation seals the drainpipe below the Water sealing box, forms upper layer water seal, lower layer's water seal is for hydrolock Leak core or trap；The side of the Water sealing box extends or is connected with the connecting chamber for deviateing the drainpipe, the floating clock Cover also correspondingly extend or be connected with deviate drainpipe, float on floating member in the connecting chamber；The floating clock The outer surface for covering top and the inner surface at the top of the Water sealing box, at least one is equipped with protrusion, so that the floating bell jar and institute It states floating member and is able to maintain lateral attitude when floating.

The floating bell jar formula water seal arrangement, it is identical as background technique principle, since floating member is offset to drainpipe side, In sewage effluent, floating member side, to keep tilting with floating bell jar, avoids being adsorbed based on bigger buoyancy.? After protrusion is arranged on floating bell jar, which can be kept, then: no matter whether the buoyancy of floating member side is bigger, In sewage effluent, lateral attitude can be kept, further ensures that floating bell jar is not influenced by adsorbing after draining；Moreover, Due to the maintenance of lateral attitude, it can be ensured that wet suction adhesion will not occur at the top of floating bell jar and Water sealing box, and be able to maintain additional Bell jar can guarantee certain contact area with Water sealing box apex suction adhesion, after draining, floating bell jar formula structure fall when Between can rationally be controlled, so as to obtain required water seal depth, that is, taken into account drainage performance and fall time It is required that.

Optionally, the floating bell jar and the floating member, the center of gravity of the two entirety are partial to the floating bell jar side.

Optionally, the floating member is additional bell jar, and the outer surface at the top of the additional bell jar is equipped with discharge surface area The rhone of water.

Optionally, the periphery of the floating bell jar is equipped with extension, the upper side of the extension or top be equipped with First pressure relief opening of outside connection, the lower end of the floating bell jar are equipped with the second pressure relief opening for being connected to its inner cavity, and described second lets out Pressure mouth is located at the lower section of first pressure relief opening；First pressure relief opening and second pressure relief opening are led inside the extension It is logical.

Optionally, the floating member is additional bell jar, and the extension is nozzle exntension tubs directed downwardly, and stretches to institute It states in additional bell jar, and the bottom surface of the exntension tubs is flushed with the bottom surface of the floating bell jar.

Optionally, nozzle sleeve directed downwardly is equipped in the exntension tubs；The bottom of the Water sealing box or the connecting chamber Equipped with the positioning column being inserted into the sleeve, the positioning column and the sleeve lining have self-locking gap, the floating When bell jar inclination drops to predeterminated position, the positioning column is touched with the sleeve lining with self-locking.

Optionally, segmentation muscle is additionally provided between the exntension tubs inner wall and the sleeve outer wall, the segmentation muscle divides institute State the cavity between exntension tubs and the sleeve.

Optionally, second pressure relief opening is the pressure release notch for being formed in the floating bell jar root edge, the pressure release notch Position corresponds to the position of the exntension tubs.

Optionally, the floating member is additional bell jar, and inner surface at the top of the additional bell jar, which is equipped with, to be extended downwardly Additional cylinder, when the additional bell jar is accidentally placed in right above the drainpipe, the additional cylinder is supported with the drainpipe upper part Touching.

Optionally, the floating member is additional bell jar, and the bottom margin of the additional bell jar is equipped with several water inlet notches.

Detailed description of the invention

Fig. 1 is a kind of schematic diagram of multilayer water seal floor drain；

Fig. 2 is a kind of structural schematic diagram of specific embodiment of floating bell jar formula sealing structure for water provided by the present invention；

Fig. 3 is the structural schematic diagram of floating bell jar and additional bell jar in Fig. 2；

Fig. 4 is the rearview of Fig. 3；

Fig. 5 is the stereoscopic schematic diagram of floating bell jar and additional bell jar in Fig. 3；

Fig. 6 is the stereoscopic schematic diagram of floating bell jar and additional bell jar in Fig. 4.

The reference numerals are as follows in Fig. 1:

1 ' Water sealing box, 2 ' floating bell jars, 3 ' drainpipes, 4 ' connecting chambers, 5 ' additional bell jars

The reference numerals are as follows in Fig. 2-6:

1 Water sealing box, 11 grate plates, discharge outlet 111,12 shells；

2 floating bell jars, 21 reinforcing ribs, 22 protrusions, 23 pressure release notches, 2a exntension tubs, 2a1 sleeve, 2a2 segmentation muscle, 2a3 the One pressure relief opening；

3 drainpipes, 4 connecting chambers；

5 additional bell jars, 51 additional cylinders, 52 water inlet notches, 53 rhones, 54 water seal type floor drain cores；

6 positioning columns.

Specific embodiment

It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention Applying example, the present invention is described in further detail.

Fig. 2-6 is please referred to, Fig. 2 is that a kind of structure of specific embodiment of floating bell jar formula sealing structure for water provided by the present invention is shown It is intended to；Fig. 3 is the structural schematic diagram of floating bell jar and additional bell jar in Fig. 2；Fig. 4 is the rearview of Fig. 3；Fig. 5 is to float in Fig. 3 The stereoscopic schematic diagram of bell jar and additional bell jar；Fig. 6 is the stereoscopic schematic diagram of floating bell jar and additional bell jar in Fig. 4.

As shown in Fig. 2, the floating bell jar formula sealing structure for water in the embodiment, including Water sealing box 1, in Water sealing box 1 Floating bell jar 2；Floating bell jar 2 cooperates the drainpipe 3 for sealing 1 lower section of Water sealing box, forms upper layer water seal, and lower layer's water seal is that can be Trap, when sewer pipe is without trap, 3 position of drainpipe still needs one layer of water seal of setting, such as can be as shown in the figure Water seal type floor drain core 54, thus with floating bell jar formula water seal formed two layers of water seal.

Water sealing box 1 in the present embodiment includes shell 12 and buckle closure in the open-topped grate plate 11 of shell 12,11 shape of grate plate At the discharge outlet 111 flowed into for sewage, the position of discharge outlet 111, quantity, size with no restriction, as long as sewage entrance can be introduced In 1 cavity of Water sealing box.The side extension of Water sealing box 1 is connected with the connecting chamber 4 for deviateing drainpipe 3, in Fig. 2, connection Chamber 4 is extended to form by Water sealing box 1, i.e., entire Water sealing box 1 is rectangle setting, and drainpipe 3 is installed on the side position of Water sealing box 1 It sets, so that the chamber of the other side deviates with respect to drainpipe 3.Obviously, connecting chamber 4 can be relatively independent with Water sealing box 1 Structure, if connection.

Floating bell jar 2 also correspondingly extend or be connected with deviate drainpipe 3, float on float portion in connecting chamber 4 Part, floating member is specially additional bell jar 5 in the present embodiment, naturally it is also possible to and it is common float, as long as can float, Concrete principle can refer to background technique understanding." extend or connect " refers to that floating bell jar 2 and floating member can be integrated knot Structure, the two can also be directly connected to by modes such as welding, can also be indirectly connected with by being set to connector between the two.

In the present solution, the outer surface (towards the one side at 1 top of Water sealing box) and 1 top of Water sealing box at 2 top of floating bell jar Inner surface (i.e. the bottom surface of grate plate 11, towards the one side of 1 inner cavity of Water sealing box), at least one is equipped with protrusion 22, so that floating bell jar 2 Lateral attitude is able to maintain when floating with floating member.As shown in Fig. 2, the outer surface at 2 top of floating bell jar is equipped with a protrusion 22.In this way, when floating when 2 sewage effluent again of floating bell jar, due to the presence of protrusion 22,5 energy of floating bell jar 2 and additional bell jar Enough to show inclined posture always, lower position is located at 2 side of floating bell jar.

Floating bell jar formula water seal arrangement in the embodiment, it is identical as background technique principle, since floating member is offset to Drainpipe side, in sewage effluent, floating member side, to keep tilting with floating bell jar 2, is kept away based on bigger buoyancy Exempt to be adsorbed.After protrusion 22 is arranged on floating bell jar 2, which can be kept, then:

One, no matter whether the buoyancy of floating member side is bigger, in sewage effluent, can keep lateral attitude, Further ensure that floating bell jar 2 is not influenced by adsorbing after draining；

The two, due to the maintenance of lateral attitude, it can be ensured that wet inhale will not occur at the top of floating bell jar 2 and Water sealing box 1 and glue Connect, and be able to maintain additional bell jar 5 to guarantee certain contact area with 1 apex suction adhesion of Water sealing box, it can also be further Improve additional bell jar 5 and contact angle, gap and the character at 1 top of Water sealing box further may be used for example, sucker shape can be used To be flexible sucker.For another example, can also be arranged between above-mentioned disjunctor bell jar (additional bell jar 5 and floating bell jar 2) and Water sealing box 1 Float ripping bar device to start bell jar indirectly.

The reason of such setting is, it has been investigated that, it is since scheme may deposit in background technique that water seal depth is insufficient The absorption of floating bell jar 2 or wet suction sticks in 11 bottom of grate plate simultaneously with additional bell jar 5, do not lead to floating bell jar 2 for a long time not It can fall, sewage quickly flows away, and causes water seal depth insufficient；The set-up mode of this programme, can remain floating bell jar 2 with And the lateral attitude of additional bell jar 5, so that only additional bell jar 5 can be with the 1 wet suction adhesion in top of Water sealing box, draining to additional bell jar 5 times fallen can rationally be controlled, and so as to obtain required water seal depth, that is, take into account drainage performance under Fall the requirement of time.

Obviously, above-mentioned raised 22 Fig. 2 is not limited to, 22 structure of hemispherical projections shown in 6, as long as can be with Water sealing box 1 top contradicts, to keep lateral attitude.For example, it may be dot bulge 22, prismatic protrusion 22, the quantity of protrusion 22 can To be more than one.Protrusion 22 may be integrally formed on floating bell jar 2, can also welding, be connected to floating by connector On bell jar 2.Protrusion 22 can also be respectively provided with also possible set on both 11 bottom of grate plate or grate plate 11 and floating bell jar 2.

As shown in Fig. 4,6, the outer surface for adding 5 top of bell jar is equipped with the rhone 53 of discharge surface area water.Several drainings For slot 53 to add the middle part of bell jar 5 as basic point, diverging setting around, rhone 53 can be set as elongated slot, short as shown in Figure 6 Slot, and uniform intervals are arranged.The moisture that the setting of rhone 53 facilitates additional 5 outer surface of bell jar is discharged along rhone 53, from And guarantee that the wet suction adhesion of additional bell jar 5 is released, it is unlikely to keep too long, guarantees water seal depth.

Further, as shown in Fig. 3,5, the periphery of floating bell jar 2 is equipped with extension, and extension is specifically in this embodiment It is arranged in exntension tubs 2a.The upper side of exntension tubs 2a or top are equipped with the first pressure relief opening 2a3 being connected to outside, floating bell jar 2 lower end is equipped with the second pressure relief opening for being connected to its inner cavity, and the second pressure relief opening is located at the lower section of the first pressure relief opening 2a3；First pressure release Mouth 2a3 and the second pressure relief opening are connected inside exntension tubs 2a.Fig. 2, in 5, the second pressure relief opening is to be formed in 2 root edge of floating bell jar Pressure release notch 23.

So set, 2 inner cavity of floating bell jar, first in the second pressure relief opening of lower end, extension can actually be passed through Pressure relief opening 2a3, is connected to outside, further ensure that can negative pressure in removal floating bell jar 2, avoid sucking and can not buoyance lift. Here the first pressure relief opening 2a3 is located at the top of the second pressure relief opening, since extension is set to the surrounding of floating bell jar 2, in fact, the One pressure relief opening 2a3 is positioned at the oblique upper of the second pressure relief opening.In this way, 2 inner cavity of floating bell jar and the channel of outside connection are opposite bent Folding, is only to play certain removal vacuum effect, and size can be relatively small, not influence the draining of floating bell jar 2 Premised on Shi Zhengchang buoyance lift, this is also the normal usage function for guaranteeing floating bell jar 2.

It is appreciated that exntension tubs 2a can be integrally formed with additional bell jar 5, can be connected also by welding or other connectors In floating bell jar 2.

In the present solution, extension is nozzle exntension tubs 2a directed downwardly, and stretch in additional bell jar 5, and exntension tubs 2a Bottom surface is flushed with the bottom surface of floating bell jar 2, and correspondingly, the second pressure relief opening at this time is set to position corresponding with additional bell jar junction It sets.Second pressure relief opening can be pressure release notch 23, be also possible to closed cavernous structure.In this way, the bottom surface of exntension tubs 2a and floating The bottom surface of dynamic bell jar 2 actually forms a closed annular, to fall the water seal needed for sealing 3 position of drainpipe and being formed When, floating bell jar 2 and exntension tubs 2a realize the function with the cooperation of 1 bottom of Water sealing box jointly.At this point, when sewage enters from upstream When, add the first buoyance lift of bell jar 5, then can raise exntension tubs 2a, allow water flow pass through more quickly the position of pressure release notch 23 into Enter in floating bell jar 2, improve the buoyance lift speed of whole floating bell jar structure, and then promote drainage speed, here the second pressure relief opening It is set as notch geometry, it is easier to be drained into.

It is appreciated that extension is not limited to the exntension tubs 2a structure stretched in additional bell jar 5, can be independently disposed to Additional bell jar 5 can be wholely set or split settings positioned at the periphery of floating bell jar 2 with floating bell jar 2.

As shown in Fig. 2, nozzle sleeve 2a1 directed downwardly can be equipped in exntension tubs 2a；1 bottom of Water sealing box is then equipped with and can insert Enter the positioning column 6 in sleeve 2a1, positioning column 6 and sleeve 2a1 inner wall have self-locking gap, and the inclination of floating bell jar 2 drops to default When position, positioning column 6 is touched with through-hole wall with self-locking, and in Fig. 2, the inner wall of sleeve 2a1 may be arranged as dentalation, side To the buoyance lift not interfere additional bell jar 5, but when declining, it is self-locking that dentalation is easy to same 6 end of positioning column engaging, so that locking Effect is more preferable, helps to keep stable lateral attitude behind the predetermined position of whereabouts.

The positioning column 6 is fixedly connected with the bottom wall of Water sealing box 1 or the fixed company of bottom wall of the positioning column 6 and connecting chamber 4 It connects.This programme, connecting chamber 4 and Water sealing box 1 form one.

Positioning column 6 can be made to float with sleeve 2a1 inner wall by the way that the self-locking gap is rationally arranged above structure Bell jar 2 due to being touched when moving to predeterminated position under unbalanced buoyancy, that is, generate prevent floating bell jar 2 continue inclination, Frictional force is cut in staggeredly turning round for decline, is eventually held in lateral attitude, is further enhanced the anti-swabbing action of floating bell jar 2.Inclination Posture is consistent with lateral attitude when 22 conflict 1 top of Water sealing box of protrusion, and the harmony of overall plan is more preferably.

As shown in figure 3, segmentation muscle 2a2 is additionally provided between exntension tubs 2a inner wall and sleeve 2a1 outer wall, segmentation muscle 2a2 segmentation Cavity between exntension tubs 2a and sleeve 2a1.Positioning column 6 needs to be inserted into sleeve 2a1, and the setting of segmentation muscle 2a2 can make to prolong The individual cavity volume stretched between a 2a and sleeve 2a1 reduces, and avoids positioning column 6 from mispluging in the cavity other than sleeve 2a1, just In assembly.Segmentation muscle 2a2 can be the column structure shown in Fig. 3, and independently of in sleeve 2a1 outer wall and exntension tubs 2a Both wall, also can connect, structure type is unlimited.

As shown in figure 5, can be arranged in the inner surface at additional 5 top of bell jar to downward when floating member is additional bell jar 5 The additional cylinder 51 stretched adds height, width dimensions or the radial dimension etc. of cylinder 51, is set as to occur with 3 position of drainpipe Interference.When then assembling, if additional bell jar 5 is accidentally placed in 3 position of drainpipe, and floating bell jar 2 is set to connecting chamber 4 one Side, adding cylinder 51 can contradict with 3 upper part of drainpipe.Then assembly crewman can have found that installation can not be fallen, to play warning In order to avoid the effect accidentally filled.

For above scheme, when floating member is additional bell jar 5, the bottom margin for adding bell jar 5 is equipped with several water inlets Notch 52.As shown in figure 5, because additional bell jar 5 does not rise or has not needed to seal the function of 3 position of drainpipe, setting water inlet Notch 52 facilitates when sewage enters, into additional bell jar 5, so that it is guaranteed that additional bell jar 5 can first buoyance lift, then drive 2 buoyance lift of floating bell jar realizes drain function, and helps to maintain lateral attitude.

In addition, can be set to for the various embodiments described above, the center of gravity of 5 entirety of floating bell jar 2 and additional bell jar is relatively floating Dynamic 2 side of bell jar, i.e., using the center sleeve 2a1 as boundary, 2 side of floating bell jar is heavier, then is more conducive to additional bell jar 5 and first floats It rises, and helps to maintain lateral attitude described in above embodiments.

The inner surface (i.e. bottom surface) at 2 top of floating bell jar, can be set reinforcing rib 21, improves the intensity of floating bell jar 2.

It should be noted that floating bell jar 2 and additional bell jar 5 are in rough " 8 " shape, it is clear that not in above-described embodiment It is limited to above-described embodiment.As long as bell cover structure can fall and 3 interface position of drainpipe formed cooperate, and can buoyance lift, fall, In protection scope of the present invention etc.For example, oblong etc. is integrally formed in the two.

The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as Protection scope of the present invention.

Claims (10)

1. a kind of floating bell jar formula sealing structure for water, including Water sealing box (1), the floating bell jar (2) being set in the Water sealing box (1)； Floating bell jar (2) cooperation seals the drainpipe (3) below the Water sealing box (1), forms upper layer water seal, and lower layer's water seal is water Envelope formula floor drain core (54) or trap；The side of the Water sealing box (1) extends or is connected with the connection for deviateing the drainpipe (3) Chamber (4), the floating bell jar (2) also correspondingly extend or be connected with deviate drainpipe (3), float on the connecting chamber (4) floating member in；It is characterized in that, outer surface at the top of the floating bell jar (2) with it is interior at the top of the Water sealing box (1) Surface, at least one is equipped with protrusion, so that the floating bell jar (2) and the floating member are able to maintain inclination appearance when floating State.

2. floating bell jar formula sealing structure for water as described in claim 1, which is characterized in that the floating bell jar (2) and described floating Dynamic component, the center of gravity of the two entirety are partial to the floating bell jar (2) side.

3. floating bell jar formula sealing structure for water as claimed in claim 2, which is characterized in that the floating member is additional bell jar (5), the outer surface at the top of the additional bell jar (5) is equipped with the rhone of discharge surface area water(53)。

4. floating bell jar formula sealing structure for water as described in claim 1, which is characterized in that the periphery of the floating bell jar (2) is set There is extension, the upper side of the extension or top are equipped with the first pressure relief opening (2a3) being connected to outside, the floating clock The lower end for covering (2) is equipped with the second pressure relief opening for being connected to its inner cavity, and second pressure relief opening is located at first pressure relief opening (2a3) Lower section；First pressure relief opening (2a3) and second pressure relief opening are connected inside the extension.

5. floating bell jar formula sealing structure for water as claimed in claim 4, which is characterized in that the floating member is additional bell jar (5), the extension is nozzle exntension tubs directed downwardly (2a), and is stretched in the additional bell jar (5), and the exntension tubs The bottom surface of (2a) is flushed with the bottom surface of the floating bell jar (2).

6. floating bell jar formula sealing structure for water as claimed in claim 5, which is characterized in that be equipped with nozzle in the exntension tubs (2a) Sleeve (2a1) directed downwardly；The bottom of the Water sealing box (1) or the connecting chamber (4) is equipped with and is inserted into the sleeve (2a1) Interior positioning column (6), the positioning column (6) and the sleeve (2a1) inner wall have self-locking gap, and the floating bell jar (2) is inclined When being down to predeterminated position obliquely downward, the positioning column (6) is touched with the sleeve (2a1) inner wall with self-locking.

7. floating bell jar formula sealing structure for water as claimed in claim 6, which is characterized in that exntension tubs (2a) inner wall and described Segmentation muscle (2a2) is additionally provided between sleeve (2a1) outer wall, the segmentation muscle (2a2) divides the exntension tubs (2a) and the set Cavity between cylinder (2a1).

8. floating bell jar formula sealing structure for water as claimed in claim 5, which is characterized in that second pressure relief opening is is formed in The pressure release notch (23) of floating bell jar (2) root edge is stated, pressure release notch (23) position corresponds to the position of the exntension tubs (2a) It sets.

9. floating bell jar formula sealing structure for water as claimed in claim 4, which is characterized in that the floating member is additional bell jar (5), the inner surface at the top of the additional bell jar (5) is equipped with the additional cylinder (51) extended downwardly, and the additional bell jar (5) is accidentally placed in When right above the drainpipe (3), the additional cylinder (51) and the drainpipe (3) upper part are contradicted.

10. floating bell jar formula sealing structure for water as described in any one of claims 1-3, which is characterized in that the floating member is The bottom margin of additional bell jar (5), the additional bell jar (5) is equipped with several water inlet notches (52).