CN106677322A - Floating bell-jar-type water sealing structure - Google Patents

Abstract

The invention provides a floating bell-jar-type water sealing structure. The floating bell-jar-type water sealing structure comprises a water sealing box, and a floating bell jar arranged in the water sealing box, wherein the floating bell jar is matched with a water discharging pipe sealing the bottom of the water sealing box to form an upper layer water seal, and a lower layer water seal is a water-sealing floor drain core or a water trap; one side of the water sealing box extends or is connected with a communication chamber deviated from the water discharging pipe, and the floating bell jar correspondingly extends or is connected with a floating part deviated from the water discharging pipe and floated in the communication chamber; and at least one of the outer surface of the top of the floating bell jar and the inner surface of the top of the water sealing box is provided with a bulge, so that the floating bell jar and the floating part can be kept at an inclined posture when in floating. The water sealing apparatus is provided with the bulge to maintain the inclined posture, so that the wet-attraction adhesion between the floating bell jar and the top of the water sealing box is avoided, the adsorption adhesion between an additional bell jar and the top of the water sealing box can also be ensured, and after the water is discharged, the falling time of the floating bell-jar-type structure can be reasonably controlled after the water is discharged, so that a needed water sealing depth can be obtained, and the requirements on the water discharging performance and the falling time can be met.

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 technology

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 is just overflowed outside pond.Usually the floating bell jar of floor drain is taken away sometimes for preventing from blocking, so, although can Solve the problems, such as that part debris are blocked, but foul smell in sewer pipe is emerged very big, pollutes environment, influences the health of people.

Various odour-proof floor drains are presently, there are, there is the floor drain of floating bell jar structure, when sewage is entered, floating bell jar can float Draining, after draining terminates, floating bell jar falls seal drainage pipeline again, to reach the effect of deodorization.However, during draining, floating Bell jar can tightly be adsorbed in the bottom wall of Water sealing box, so as to cause during 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, refer to Fig. 1, and Fig. 1 is one Plant the schematic diagram of multilayer water seal floor drain.

As shown in figure 1, the multilayer water seal floor drain includes two-layer water seal, wherein upper strata 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 floor's water seal is located at and floating clock In drainpipe 3 ' below cover 2 '.The side of Water sealing box 1 ' is connected with the connection chamber 4 ' for deviateing drainpipe 3 ', and chamber is connected in Fig. 1 Room 4 ' falls within a part for the inner chamber of Water sealing box 1 ', and floating bell jar 2 ' is also correspondingly connected the additional bell jar for deviateing drainpipe 3 ' 5 ', the additional bell jar 5 ' is floated in connection 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 ' Be arranged concentrically with drainpipe 3 ', and connect chamber 4 ', additional bell jar 5 ' with the eccentric setting of the relatively large distance of drainpipe 3 ', therefore Flow velocity is very fast because relatively near apart from drainpipe 3 ' for sewage in Water sealing box 1 ' near the side of floating bell jar 2 ', remote in connection chamber 4 ' From the side of floating bell jar 2 ' sewage because with a distance from drainpipe 3 ' farther out and flow velocity is slower.

Therefore, in Water sealing box 1 ', the overall chamber of the connection composition of chamber 4 ', buoyancy of the connection chamber 4 ' to floating member 5 ' More than Water sealing box 1 ' to the buoyancy of floating bell jar 2 ', and apart from drainpipe 3 ' distance is bigger, the buoyancy is bigger.It is then fast in sewage During speed flowing, floating bell jar 2 ' can be inclined because of the imbalance of buoyancy to the outside of Water sealing box 1 ', can 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 working stability of water seal floor drain Property.

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

In view of this, it would be highly desirable to for above-mentioned technical problem, further optimization design is done to water seal arrangement, inhaled negative pressure is avoided On the premise of attached raising job stability, so that the water seal effect at floating bell jar is more preferably.

The content 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 on 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, including Water sealing box, the floating clock in the Water sealing box Cover；The floating bell jar coordinates the drainpipe sealed below the Water sealing box, forms upper strata water seal, and lower floor's water seal is hydrolock ground Leakage core or trap；The side of the Water sealing box extends or is connected with the connection chamber for deviateing the drainpipe, the floating clock Cover also correspondingly extends or is connected with floating member deviateing drainpipe, floating in the connection chamber；The floating clock Inner surface at the top of outer surface at the top of cover and the Water sealing box, at least one is provided with projection, so that the floating bell jar and institute Stating floating member can keep lateral attitude when floating.

The floating bell jar formula water seal arrangement, it is identical with background technology principle, because floating member is offset to drainpipe side, In sewage effluent, floating member side is based on bigger buoyancy, so as to keep inclining with floating bell jar, it is to avoid adsorbed. After setting projection on floating bell jar, the lateral attitude can be kept, then：No matter whether the buoyancy of floating member side is bigger, In sewage effluent, lateral attitude can be kept, further ensure that floating bell jar is not influenceed by absorption after draining；And, Due to the maintenance of lateral attitude, it can be ensured that floating bell jar will not occur wet suction adhesion with Water sealing box top, and can keep additional Bell jar can be with Water sealing box apex suction adhesion, it is ensured that certain contact area, after draining, floating bell jar formula structure fall when Between can rationally be controlled such that it is able to the water seal depth needed for obtaining, that is, taken into account drainage performance and fall time It is required that.

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

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

Alternatively, the periphery of the floating bell jar is provided with extension, the upper side of the extension or top be provided with First pressure relief opening of ft connection, the lower end of the floating bell jar is communicated with the second pressure relief opening of its inner chamber, 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.

Alternatively, the floating member is additional bell jar, and the extension is nozzle exntension tubs directed downwardly, and stretches to institute State in additional bell jar, and the bottom surface of the exntension tubs flushes with the bottom surface of the floating bell jar.

Alternatively, nozzle sleeve directed downwardly is provided with the exntension tubs；The bottom of the Water sealing box or the connection chamber The locating dowel being inserted into the sleeve is provided with, the locating dowel has self-locking gap, the floating with the sleeve lining Bell jar is inclined when dropping to predeterminated position, and the locating dowel is touched with self-locking with the sleeve lining.

Alternatively, segmentation muscle is additionally provided between the exntension tubs inwall and the sleeve outer wall, the segmentation muscle splits institute State the cavity between exntension tubs and the sleeve.

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

Alternatively, the floating member is additional bell jar, and the inner surface at the top of the additional bell jar is provided with what is extended downwardly Additional cylinder, the additional bell jar is placed in when directly over the drainpipe by mistake, and the additional cylinder is supported with the drainpipe upper part Touch.

Alternatively, the floating member is additional bell jar, and the bottom margin of the additional bell jar is provided with some water inlet breach.

Brief description of the drawings

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

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

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

Fig. 4 is the rearview of Fig. 3；

Fig. 5 is the schematic perspective view of floating bell jar and additional bell jar in Fig. 3；

Fig. 6 is the schematic perspective view of floating bell jar and additional bell jar in Fig. 4.

Description of reference numerals is as follows in Fig. 1：

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

Description of reference numerals is as follows in Fig. 2-6：

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

2 floating bell jars, 21 reinforcements, 22 projections, 23 pressure release breach, 2a exntension tubs, 2a1 sleeves, 2a2 segmentation muscle, 2a3 the One pressure relief opening；

3 drainpipes, 4 connection chambers；

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

6 locating dowels.

Specific embodiment

In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real The present invention is described in further detail to apply example.

Fig. 2-6 are refer 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 representation of floating bell jar and additional bell jar in Fig. 2；Fig. 4 is the rearview of Fig. 3；Fig. 5 is floating in Fig. 3 The schematic perspective view of bell jar and additional bell jar；Fig. 6 is the schematic perspective view 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 coordinates the drainpipe 3 for sealing the lower section of Water sealing box 1, forms upper strata water seal, and lower floor's water seal is to be Trap, when sewer pipe is without trap, the position of drainpipe 3 still needs to set one layer of water seal, for example, can be shown in figure Water seal type floor drain core 54, so as to the water seal of floating bell jar formula formed two-layer water seal.

Water sealing box 1 in the present embodiment includes housing 12 and buckle closure in the open-topped grate plate 11 of housing 12, the shape of grate plate 11 Into the discharge outlet 111 flowed into for sewage, the position of discharge outlet 111, quantity, size are not restricted, as long as sewage entrance can be introduced In the cavity of Water sealing box 1.The side of Water sealing box 1 extends or is connected with the connection chamber 4 for deviateing drainpipe 3, in Fig. 2, connection Chamber 4 is extended by Water sealing box 1 and is formed, i.e., whole Water sealing box 1 is rectangle setting, and drainpipe 3 is installed on the side position of Water sealing box 1 Put, so that the chamber of opposite side deviates with respect to drainpipe 3.Obviously, connection chamber 4 can be relatively independent with Water sealing box 1 Structure, if connection.

Floating bell jar 2 also correspondingly extends or is connected with float portion deviateing drainpipe 3, floating in connection chamber 4 Part, floating member is specially additional bell jar 5 in the present embodiment, naturally it is also possible to be common float, as long as can float, Concrete principle can refer to background technology understanding." extend or connect " refers to floating bell jar 2 can be integrated knot with floating member Structure, the two can also be directly connected to by modes such as welding, it is also possible to be indirectly connected with by located at connector therebetween.

In this programme, outer surface (towards the one side at the top of Water sealing box 1) and the top of Water sealing box 1 at the top of floating bell jar 2 Inner surface (i.e. the bottom surface of grate plate 11, towards the one side of the inner chamber of Water sealing box 1), at least one is provided with raised 22, so that floating bell jar 2 Lateral attitude can be kept when floating with floating member.As shown in Fig. 2 the outer surface at the top of floating bell jar 2 is provided with a projection 22.In this way, when floating when 2 sewage effluent again of floating bell jar, due to raised 22 presence, floating bell jar 2 and the energy of additional bell jar 5 Enough to show inclined attitude all the time, lower position is located at the side of floating bell jar 2.

Floating bell jar formula water seal arrangement in the embodiment, it is identical with background technology principle, because floating member is offset to Drainpipe side, in sewage effluent, floating member side is based on bigger buoyancy, so as to keep inclining with floating bell jar 2, keeps away Exempt to be adsorbed.After setting raised 22 on floating bell jar 2, the lateral attitude 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 influenceed by absorption after draining；

The two, due to the maintenance of lateral attitude, it can be ensured that floating bell jar 2 will not occur wet suction and glue with the top of Water sealing box 1 Even, and can keep the additional bell jar 5 can be with the apex suction adhesion of Water sealing box 1, it is ensured that certain contact area, it is acceptable further Improve contact angle, gap and the proterties at additional bell jar 5 and the top of Water sealing box 1, such as, sucker shape can be used, further may be used Being flexible sucker.For another example, can also be set and Water sealing box 1 between in above-mentioned disjunctor bell jar (additional bell jar 5 and floating bell jar 2) Float ripping bar device starting bell jar indirectly.

The reason for being arranged such be, it has been investigated that, water seal depth is not enough, is because scheme may be deposited in background technology Floating bell jar 2 adsorb or wet suction sticks in the bottom of grate plate 11 simultaneously with additional bell jar 5, do not cause floating bell jar 2 for a long time not Can fall, sewage quickly flows away, cause water seal depth not enough；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 wet suction adhesion in the top of Water sealing box 1, draining to additional bell jar 5 fall times can rationally be controlled such that it is able to obtain needed for water seal depth, that is, taken into account drainage performance and under Fall the requirement of time.

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

As shown in Fig. 4,6, the outer surface at the top of additional bell jar 5 is provided with the rhone 53 of discharge surface area water.Some drainings Groove 53 dissipates to surrounding and sets with the middle part of additional bell jar 5 as basic point, and rhone 53 can as shown in Figure 6 be set to elongated slot, short Groove, and uniform intervals setting.The setting of rhone 53 contributes to the moisture of the outer surface of additional bell jar 5 to be discharged along rhone 53, from And ensure that the wet suction adhesion of additional bell jar 5 is released, it is unlikely to keep too long, it is ensured that water seal depth.

Further, as shown in Fig. 3,5, the periphery of floating bell jar 2 is provided with extension, and extension is specifically in this embodiment Set in exntension tubs 2a.The upper side of exntension tubs 2a or top are provided with the first pressure relief opening 2a3 with ft connection, floating bell jar 2 lower end is communicated with the second pressure relief opening of its inner chamber, 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 turned on inside exntension tubs 2a.In Fig. 2,5, the second pressure relief opening is to be formed at the root edge of floating bell jar 2 Pressure release breach 23.

It is arranged such, the inner chamber of floating bell jar 2, can essentially be by first in the second pressure relief opening of lower end, extension Pressure relief opening 2a3, is communicated to outside, further ensure that can be in removal floating bell jar 2 negative pressure, it is to avoid suck and cannot buoyance lift. Here the first pressure relief opening 2a3 is located at the top of the second pressure relief opening, because extension is located at the surrounding of floating bell jar 2, in fact, the One pressure relief opening 2a3 is the oblique upper for being located at the second pressure relief opening.In this way, the inner chamber of floating bell jar 2 is relative with the passage of ft connection bent Folding, is only to play certain removal vacuum effect, and its size can be with relatively small, not influence the draining of floating bell jar 2 Premised on Shi Zhengchang buoyance lifts, this is also the normal usage function for ensureing 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 this programme, extension is nozzle exntension tubs 2a directed downwardly, and is stretched in additional bell jar 5, and exntension tubs 2a Bottom surface flushes with the bottom surface of floating bell jar 2, and correspondingly, the second pressure relief opening now is located at position corresponding with additional bell jar junction Put.Second pressure relief opening can be pressure release breach 23, or blind bore shape structure.In this way, the bottom surface of exntension tubs 2a with it is floating The bottom surface of dynamic bell jar 2 actually forms the annular of a closing, to fall the water seal needed for sealing the position of drainpipe 3 and formation When, floating bell jar 2 realizes the function of coordinating with the bottom of Water sealing box 1 with exntension tubs 2a jointly.Now, when sewage enters from upstream When, the first buoyance lift of additional bell jar 5 can then raise exntension tubs 2a so that the position that current can pass through more quickly pressure release breach 23 is entered Enter in floating bell jar 2, improve the buoyance lift speed of overall floating bell jar structure, and then lift drainage speed, here the second pressure relief opening It is set to notch geometry, it is easier to be drained into.

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

As shown in Fig. 2 nozzle sleeve 2a1 directed downwardly can be provided with exntension tubs 2a；The bottom of Water sealing box 1 is then provided with and can insert Enter the locating dowel 6 in sleeve 2a1, locating dowel 6 has self-locking gap with sleeve 2a1 inwalls, and the inclination of floating bell jar 22 drops to pre- If during position, locating dowel 6 is touched with self-locking with through-hole wall, in Fig. 2, the inwall of sleeve 2a1 may be arranged as dentalation, Direction is the buoyance lift of the additional bell jar 5 of without prejudice to, but when declining, dentalation is easy to the engaging self-locking of the end of same locating dowel 6 so that lock Determine effect more preferably, help to keep the lateral attitude of stabilization behind the precalculated position of whereabouts.

The locating dowel 6 is fixedly connected with the bottom wall of Water sealing box 1, or the locating dowel 6 is fixed with the bottom wall for connecting chamber 4 and connected Connect.This programme, connection chamber 4 forms one with Water sealing box 1.

For said structure, by rationally setting the self-locking gap, locating dowel 6 can be made to be floated with sleeve 2a1 inwalls Bell jar 2 due to being touched when moving to predeterminated position under unbalanced buoyancy, that is, produce prevent floating bell jar 2 continue incline, Frictional force is cut in the staggeredly torsion for declining, and is eventually held in lateral attitude, further enhances the anti-swabbing action of floating bell jar 2.Incline Lateral attitude when attitude is with raised 22 conflict, 1 top of Water sealing box is consistent, and the harmony of overall plan is more preferably.

As shown in figure 3, segmentation muscle 2a2 is additionally provided between exntension tubs 2a inwalls and sleeve 2a1 outer walls, the 2a2 segmentations of segmentation muscle Cavity between exntension tubs 2a and sleeve 2a1.Locating dowel 6 is needed in insertion 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, it is to avoid locating dowel 6 is mispluged in the cavity beyond sleeve 2a1, just In assembling.Segmentation muscle 2a2 can be the column structure manifested in Fig. 3, and independently of in sleeve 2a1 outer walls and exntension tubs 2a Wall, it is also possible to which both connections, structure type is not limited.

As shown in figure 5, when floating member is additional bell jar 5, can be in the inner surface setting at the top of additional bell jar 5 to downward The additional cylinder 51 stretched, the height of additional cylinder 51, width dimensions or radial dimension etc., are set to can to occur with the position of drainpipe 3 Interference.When then assembling, if additional bell jar 5+ is placed in into the pipe position of draining 3 by mistake, and floating bell jar 2 is arranged at connection chamber 4 one Side, additional cylinder 51 can be contradicted with the upper part of drainpipe 3.Then assembly crewman can have found that installation cannot be fallen, so as to play warning In order to avoid the effect for filling by mistake.

For such scheme, when floating member is additional bell jar 5, the bottom margin of additional bell jar 5 is provided with some water inlets Breach 52.As shown in figure 5, because additional bell jar 5 does not play or need not rise the function of sealing the position of drainpipe 3, setting water inlet Breach 52 helps to enter fashionable in sewage, into additional bell jar 5, so that it is guaranteed that additional bell jar 5 can first buoyance lift, then drive The buoyance lift of floating bell jar 2, realizes drain function, and help to maintain lateral attitude.

In addition, for the various embodiments described above, could be arranged to, the center of gravity of floating bell jar 2 and the entirety of additional bell jar 5 is partial to floating The dynamic side of bell jar 2, i.e., with sleeve 2a1 centers as boundary, the side of floating bell jar 2 is heavier, then advantageously first floated in additional bell jar 5 Rise, and help to maintain the lateral attitude described in above example.

The inner surface (i.e. bottom surface) at the top of floating bell jar 2, can set reinforcement 21, improve the intensity of floating bell jar 2.

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

The above is only the preferred embodiment of the present invention, it is noted that come for those skilled in the art Say, under the premise without departing from the principles of the invention, can also make some improvements and modifications, 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) in the Water sealing box (1)； The floating bell jar (2) coordinates the drainpipe (3) sealed below the Water sealing box (1), forms upper strata water seal, and lower floor'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 connection chamber (4) floating member in；Characterized in that, interior at the top of outer surface at the top of the floating bell jar (2) and the Water sealing box (1) Surface, at least one is provided with projection, so that the floating bell jar (2) can keep inclination appearance with the floating member when floating State.

2. floating bell jar formula sealing structure for water as claimed in claim 1, it is characterised in that the floating bell jar (2) and described floating Dynamic component, the two overall center of gravity is partial to the floating bell jar (2) side.

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

4. floating bell jar formula sealing structure for water as claimed in claim 1, it is characterised in that the periphery of the floating bell jar (2) sets There is extension, the upper side of the extension or top are provided with the first pressure relief opening (2a3) with ft connection, the floating clock The lower end for covering (2) is communicated with the second pressure relief opening of its inner chamber, 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 turned on inside the extension.

5. floating bell jar formula sealing structure for water as claimed in claim 4, it is characterised 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) flushes with the bottom surface of the floating bell jar (2).

6. floating bell jar formula sealing structure for water as claimed in claim 5, it is characterised in that is provided with nozzle in the exntension tubs (2a) Sleeve (2a1) directed downwardly；The bottom of the Water sealing box (1) or connection chamber (4) is provided with and is inserted into the sleeve (2a) Interior locating dowel (7), the locating dowel (7) has self-locking gap with the sleeve (2a1) inwall, and the floating bell jar (2) is inclined When tiltedly dropping to predeterminated position, the locating dowel (7) is touched with self-locking with the sleeve (2a1) inwall.

7. floating bell jar formula sealing structure for water as claimed in claim 6, it is characterised in that exntension tubs (2a) inwall and described Segmentation muscle (2a2) is additionally provided between sleeve (2a1) outer wall, segmentation muscle (2a2) splits 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, it is characterised in that second pressure relief opening is to be formed at The pressure release breach (23) of floating bell jar (2) root edge is stated, pressure release breach (23) position corresponds to the position of the exntension tubs (2a) Put.

9. floating bell jar formula sealing structure for water as claimed in claim 4, it is characterised in that the floating member is additional bell jar (5), the inner surface at the top of the additional bell jar (5) is provided with the additional cylinder (51) for extending downwardly, and the additional bell jar (5) is placed in by mistake When directly over the drainpipe (3), described+additional cylinder (51) contradicts with the drainpipe (3) upper part.

10. the floating bell jar formula sealing structure for water as described in claim any one of 1-3, it is characterised in that the floating member is Additional bell jar (5), the bottom margin of the additional bell jar (5) is provided with some water inlets breach (52).