CN211596270U

CN211596270U - Permeable asphalt pavement

Info

Publication number: CN211596270U
Application number: CN201922305682.8U
Authority: CN
Inventors: 高坤云
Original assignee: Anhui Chengxin Construction Engineering Management Co ltd
Current assignee: Anhui Chengxin Construction Engineering Management Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-29
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a bituminous paving permeates water, include the plain soil layer of laying in proper order by going up from the bottom, concrete layer and the pitch layer permeates water, this bituminous paving permeates water still including setting up in the escape canal of road both sides, the ladder groove has been seted up on the pitch layer, the fence is installed to the ladder inslot, the cylindricality groove has been seted up on the position that the concrete layer that permeates water corresponds with the ladder groove, the lower cylindricality groove that communicates with the inner diapire in cylindricality groove still is seted up on the concrete layer that permeates water, the cylindricality inslot is fixed with the connecting pipe down, be used for filterable first filter screen is installed to the upper end of connecting pipe, through the drain pipe intercommunication between connecting pipe and the. The utility model discloses set up first filter screen in the connecting pipe upper end to this has played good filtering action to the water that gets into in the connecting pipe, makes the water that gets into in the connecting pipe obtain abundant filtration, has reduced the aquatic debris content that gets into in the connecting pipe, thereby has reduced the probability that the connecting pipe takes place to block up, is favorable to making the surface gathered water in time discharge.

Description

Permeable asphalt pavement

Technical Field

The utility model belongs to the technical field of the road surface structure technique and specifically relates to a bituminous paving permeates water is related to.

Background

The asphalt pavement is characterized in that mineral materials are mixed with various types of pavements paved with asphalt materials, and the asphalt binder improves the ability of paving granules to resist damage of driving and natural factors to the pavements, so that the pavements are smooth, less in dust, permeable and durable.

The utility model discloses a chinese utility model patent that publication number is CN208949676U discloses a bituminous paving permeates water, including the basic unit, the metalling has been laid to the basic unit upper end, the metalling upper berth is equipped with the fine stone layer, both ends all are equipped with the pipe in the fine stone layer, second concrete layer has been laid to fine stone layer top, be equipped with the reinforcing bar net on the second concrete layer, be equipped with first concrete layer on the reinforcing bar net, first concrete layer upper berth is equipped with the pitch layer, the equidistance is provided with a plurality of connecting pipes in the pitch layer, the connecting pipe runs through first concrete layer, reinforcing bar net and second concrete layer, and is linked together with the pipe, the basic unit both ends all are equipped with water drainage tank, pipe one end extends into water drainage tank. The utility model discloses a through setting up water drainage tank, connecting pipe and pipe, be convenient for discharge the ponding on the road surface.

The bituminous paving permeates water among the above-mentioned technical scheme does not set up filtering mechanism in the connecting pipe, and when the debris that the bore size of connecting pipe is close got into in the connecting pipe, the connecting pipe takes place the jam easily to make ponding on the road surface be difficult to discharge.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bituminous paving permeates water, this bituminous paving permeates water sets up first filter screen at the end of intaking of connecting pipe to this has played good filtering action to the water that gets into the connecting pipe, has reduced the probability that the connecting pipe takes place to block up, is favorable to making road surface ponding in time discharge.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a bituminous paving permeates water, includes by plain soil layer, the concrete layer and the pitch layer of permeating water that lay in proper order from bottom to top, should permeate water bituminous paving still including setting up in the escape canal of road both sides, the ladder groove has been seted up on the pitch layer, the ladder inslot is installed and is used for the fence of the great volume debris of separation, the cylindricality groove has been seted up on the concrete layer that permeates water and the position that the ladder groove corresponds, the lower cylindricality groove that communicates with the inner diapire in last cylindricality groove still is seted up on the concrete layer that permeates water, the cylindricality inslot is fixed with the connecting pipe down, the upper end of connecting pipe is installed and is used for filterable first filter screen, through the drain pipe intercommunication between connecting pipe and.

Through adopting above-mentioned technical scheme, set up first filter screen on the connecting pipe to this has played good filtering action to the water that gets into in the connecting pipe, makes the water that gets into in the connecting pipe obtain abundant filtration, has reduced the aquatic debris content that gets into in the connecting pipe, thereby has reduced the probability that the connecting pipe takes place to block up, is favorable to making the surface gathered water in time discharge.

The utility model discloses further set up to: the fixed subassembly that is used for fixed first filter screen is installed to the connecting pipe upper end, fixed subassembly including run through set up in the bolt on the frame of first filter screen and set up in the connecting pipe upper end and with bolt threaded connection's screw hole.

Through adopting above-mentioned technical scheme to this staff of being convenient for fixes and dismantles first filter screen, thereby the staff of being convenient for takes off first filter screen and scrubs first filter screen, and in addition, when the connecting pipe took place to block up, the staff can be with the help of the pump of outside pump-in atmospheric pressure in to the connecting pipe, makes the connecting pipe dredge through the high-pressure effect, thereby make the connecting pipe dredge, be favorable to going on smoothly of road surface drainage work.

The utility model discloses further set up to: the top of the first filter screen is arc-shaped.

Through adopting above-mentioned technical scheme, when debris gather in first filter screen top, debris easily follow the arc surface landing at first filter screen top to this has reduced debris and has piled up in first filter screen top and make the probability that the connecting pipe takes place to block up.

The utility model discloses further set up to: the height that highly is greater than the interior diapire of last cylindrical groove of connecting pipe upper end, install annular receiver between the inboard arc surface in last cylindrical groove and the outside arc surface of connecting pipe, the outer diapire of annular receiver and the interior diapire laminating in last cylindrical groove, just annular receiver upper end open-ended highly less than or equal to the height of connecting pipe upper end.

Through adopting above-mentioned technical scheme, along the debris of the arc surface landing at first filter screen top can in time be collected by annular receiver, be favorable to the staff to concentrate the clearance to debris.

The utility model discloses further set up to: a plurality of water seepage holes are formed in the side wall and the bottom wall of the annular storage box.

Through adopting above-mentioned technical scheme, when the water droplet that sees through the fence falls to in the annular containing box, rivers can follow the infiltration hole seepage, afterwards, rivers continue to infiltrate down along the concrete layer that permeates water, have reduced rivers and have piled up the probability in the annular containing box, are favorable to improving the drainage performance of road surface structure.

The utility model discloses further set up to: and a first C-shaped connecting rod and a second C-shaped connecting rod are fixed on the top wall of the annular storage box, and the second C-shaped connecting rod and the first C-shaped connecting rod are perpendicular to each other and are intersected.

Through adopting above-mentioned technical scheme, when debris content in the annular receiver is more, the staff can open the fence, holds first C shape connecting rod and second C shape connecting rod afterwards and upwards lifts and draws, can dismantle the annular receiver to this is convenient for the staff clears up the debris in the annular receiver.

The utility model discloses further set up to: the first C-shaped connecting rod is sleeved with a first rubber anti-slip sleeve fixed with the first C-shaped connecting rod, and the second C-shaped connecting rod is sleeved with a second rubber anti-slip sleeve fixed with the second C-shaped connecting rod.

Through adopting above-mentioned technical scheme, first rubber antiskid cover and second rubber antiskid cover are made by rubber materials, and both surfaces all have great coefficient of friction, and when the staff held first rubber antiskid cover and second rubber antiskid cover, great frictional force had between staff's hand and first rubber antiskid cover and the second rubber antiskid cover, had reduced the probability that the staff took place to skid when holding second C shape connecting rod and first C shape connecting rod.

The utility model discloses further set up to: and an SBS modified asphalt waterproof coiled material is arranged between the plain soil layer and the water permeable concrete layer.

By adopting the technical scheme, the SBS modified asphalt waterproof coiled material is formed by compounding the glass fiber felt, the polyester felt and the glass fiber reinforced polyester felt for the styrene-butadiene-styrene rubber modified asphalt as the base, has excellent ultralow temperature performance, can still keep good flexibility at the low temperature of minus 40 ℃, can adapt to deformation and cracking of a roadbed, forms a high-strength waterproof layer, avoids continuous infiltration of water flow along a plain soil layer, and reduces the probability of water flow scouring the plain soil layer and causing the plain soil layer to collapse.

The utility model discloses further set up to: the drain pipe is obliquely arranged, and the height of one end, close to the connecting pipe, of the drain pipe is larger than the height of one end, far away from the connecting pipe, of the drain pipe.

Through adopting above-mentioned technical scheme, when a small amount of micromolecular impurity gets into the drain pipe along the connecting pipe, through setting up the drain pipe slope to this makes in the debris in the drain pipe can in time discharge to the escape canal, thereby has reduced the probability that the drain pipe takes place to block up.

To sum up, the utility model discloses a beneficial technological effect does:

according to the scheme, the first filter screen is arranged at the upper end of the connecting pipe, so that a good filtering effect is achieved on water entering the connecting pipe, the water entering the connecting pipe is fully filtered, the content of impurities in the water entering the connecting pipe is reduced, the probability of blockage of the connecting pipe is reduced, and accumulated water on the road surface can be discharged in time;

in the scheme, the fixing component is arranged at the upper end of the connecting pipe, so that workers can fix and disassemble the first filter screen conveniently, and can take down the first filter screen and scrub the first filter screen conveniently;

in this scheme, when debris content in the annular receiver was more, the staff can open the fence, holds first C shape connecting rod and second C shape connecting rod afterwards and upwards lifts and draws, can dismantle the annular receiver to this is convenient for the staff and clears up the debris in the annular receiver.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic plan view of the overall structure of the present invention;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

fig. 4 is a schematic structural view for highlighting the first rubber anti-slip sleeve and the second rubber anti-slip sleeve of the present invention.

Reference numerals: 1. a plain soil layer; 2. SBS modified asphalt waterproof coiled material; 3. a pervious concrete layer; 31. an upper cylindrical groove; 32. a lower cylindrical groove; 4. an asphalt layer; 41. a stepped groove; 411. a fence; 5. a drainage ditch; 51. mounting grooves; 511. a second filter screen; 6. a connecting pipe; 61. a drain pipe; 7. a first filter screen; 8. a fixing assembly; 81. a bolt; 82. a threaded hole; 9. an annular storage box; 91. a water seepage hole; 92. a first C-shaped link; 921. a first rubber anti-slip sleeve; 93. a second C-shaped link; 931. and the second rubber anti-slip sleeve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, for the utility model discloses a bituminous paving permeates water, including plain soil layer 1, SBS modified asphalt waterproofing membrane 2, the concrete layer 3 that permeates water, pitch layer 4 and escape canal 5. The plain soil layer 1, the SBS modified asphalt waterproof coiled material 2, the pervious concrete layer 3 and the asphalt layer 4 are sequentially arranged from bottom to top, and the plain soil layer 1 is formed by soil under the tamping of a soil compactor. The SBS modified asphalt waterproof coiled material 2 is laid on the upper surface of the plain soil layer 1, the SBS modified asphalt waterproof coiled material 2 is formed by compounding a glass fiber felt for styrene-butadiene-styrene rubber modified asphalt, a polyester felt and a glass fiber reinforced polyester felt as a base, has excellent ultralow temperature performance, can still keep good flexibility at the low temperature of minus 40 ℃, the SBS modified asphalt waterproof coiled material 2 can adapt to deformation and cracking of a roadbed to form a high-strength waterproof layer, and water flow is prevented from continuously seeping down along the plain soil layer 1, so that the probability that the plain soil layer 1 is flushed by the water flow and the plain soil layer 1 collapses is reduced. The pervious concrete layer 3 is paved by pervious concrete and is paved on the upper surface of the SBS modified asphalt waterproof coiled material 2. The asphalt layer 4 is formed by paving asphalt materials and is laid on the upper surface of the pervious concrete layer 3. The escape canal 5 adopts cement to pile up and forms, and its cross section is the U-shaped, and the extending direction of escape canal 5 is parallel with the length direction on road surface, and the quantity of escape canal 5 is two, and two 5 symmetries in escape canal set up in the road surface both sides.

As shown in fig. 1, a stepped groove 41 is formed in the upper surface of the asphalt layer 4, the cross section of the stepped groove 41 is stepped, the bottom surface of the stepped groove 41 is flush with the upper surface of the pervious concrete layer 3, and a fence 411 is installed in the stepped groove 41. The fence 411 is circular, the axis of the fence is vertical, the outer side arc surface of the fence 411 is attached to the inner side arc surface of the stepped groove 41, and the bottom surface of the fence 411 is attached to the inner bottom wall of the stepped groove 41. Through setting up fence 411 to this has played the prefiltration effect to the rivers that get into in the ladder groove 41, has reduced the probability that the great debris of volume gets into in the ladder groove 41.

As shown in fig. 2 and 3, the pervious concrete layer 3 is provided with an upper cylindrical groove 31 and a lower cylindrical groove 32, the cross section of the upper cylindrical groove 31 is circular, the position of the upper cylindrical groove 31 corresponds to the position of the stepped groove 41, the upper surface of the upper cylindrical groove 31 is flush with the upper surface of the pervious concrete layer 3, and the axis of the upper cylindrical groove 31 coincides with the axis of the fence 411. The cross section of the lower cylindrical groove 32 is circular, the axis of the lower cylindrical groove coincides with the axis of the upper cylindrical groove 31, and the upper end opening of the lower cylindrical groove 32 is communicated with the inner bottom wall of the upper cylindrical groove 31.

As shown in fig. 2, the connecting pipe 6 is installed in the lower cylindrical groove 32, the connecting pipe 6 is a circular tube-shaped structure, the axis of the connecting pipe 6 coincides with the axis of the lower cylindrical groove 32, the outer arc surface of the connecting pipe 6 is attached and fixed to the inner arc surface of the connecting pipe 6, and the height of the upper opening of the connecting pipe 6 is greater than the height of the upper opening of the lower cylindrical groove 32. Combine shown in fig. 3, the connecting pipe 6 upper end is equipped with first filter screen 7, and the frame bottom surface of first filter screen 7 and the laminating of the upper end open surface of connecting pipe 6 through setting up first filter screen 7 to this rivers that get into in the connecting pipe 6 filter, have reduced the less debris of volume and have followed the probability that the end got into in the connecting pipe 6 of intaking of connecting pipe 6, thereby have reduced the probability that connecting pipe 6 takes place to block up. First filter screen 7 top is the arc, and when a small amount of debris passed fence 411 and dropped to first filter screen 7 top, debris easily followed the arc surface landing at first filter screen 7 top to this has reduced the probability that debris are piled up in first filter screen 7 top, thereby makes first filter screen 7 can exert good filtering capability.

As shown in fig. 3, a fixing assembly 8 is installed at the upper end of the connection pipe 6 for fixing the first filter 7, and the fixing assembly 8 includes a bolt 81 and a threaded hole 82. The axis of the bolt 81 is vertical, and a through hole (not shown in the figure) for the bolt 81 to pass through is formed on the frame of the first filter 7, so that the bolt 81 can pass through the frame of the first filter 7 conveniently. The axis of the screw hole 82 coincides with the axis of the bolt 81, and is opened on the upper end surface of the connection pipe 6, and the screw hole 82 is screwed with the bolt 81. When installing first filter screen 7, the staff only need with the bottom surface of first filter screen 7 frame and the up end laminating of connecting pipe 6, run through the through-hole with bolt 81 afterwards to make bolt 81 and screw hole 82 threaded connection, with this can be fixed in connecting pipe 6 upper end with first filter screen 7. When first filter screen 7 takes place to block up, the staff can dismantle first filter screen 7 through unscrewing bolt 81 to this is convenient for the staff to scrub first filter screen 7, and makes first filter screen 7 can dredge.

As shown in fig. 2, a drain pipe 61 is embedded in the pervious concrete layer 3, the drain pipe 61 is a circular tubular structure which is obliquely arranged, the upper end of the drain pipe 61 is fixed and communicated with the position, close to the bottom, of the side wall of the connecting pipe 6, the lower end of the drain pipe 61 is fixed and communicated with the side wall of the drainage ditch 5, and the height of the end, close to the connecting pipe 6, of the drain pipe 61 is greater than the height of the end, far away from the connecting pipe 6, of the drain pipe. Through setting up drain pipe 61 to this is convenient for arrange the rivers that get into in connecting pipe 6 in escape canal 5, in addition, sets up drain pipe 61 slope for debris are difficult to pile up in drain pipe 61, are favorable to making drain pipe 61 continuously to keep the on-state.

As shown in fig. 3, annular storage box 9 is installed in upper cylindrical groove 31, the cross section of annular storage box 9 is circular ring-shaped, the axis of annular storage box 9 coincides with the axis of connecting pipe 6, the outside arc surface of annular storage box 9 fits with the inside arc surface of upper cylindrical groove 31, the inside arc surface of annular storage box 9 fits with the outside arc surface of connecting pipe 6, the outer bottom wall of annular storage box 9 fits with the inner bottom wall of upper cylindrical groove 31, and the height of upper end opening of annular storage box 9 is less than or equal to the height of upper end of connecting pipe 6. Through setting up annular receiver 9, when the arc surface landing at 7 tops of first filter screen, debris easily get into annular receiver 9 and collect to this is convenient for the staff to concentrate the clearance to debris.

As shown in fig. 3, infiltration hole 91 has all been seted up on annular receiver 9 lateral wall and the diapire, and the cross section in infiltration hole 91 is circular, and the quantity in infiltration hole 91 is a plurality of to this rivers are oozed from infiltration hole 91, are favorable to making the rivers that get into in annular receiver 9 continue infiltration down along pervious concrete layer 3. Referring to fig. 2, a mounting groove 51 is formed in a position, close to the upper surface of the SBS modified asphalt waterproof roll 2, of the side wall of the drainage ditch 5, the cross section of the mounting groove 51 is rectangular, and a second filter screen 511 is mounted in the mounting groove 51. The cross section of the second filter screen 511 is rectangular, the upper surface of the second filter screen 511 is attached and fixed to the top wall of the mounting groove 51, and the bottom surface of the second filter screen 511 is attached and fixed to the bottom wall of the mounting groove 51, so that water permeating down the water-permeable concrete layer 3 to the upper surface of the SBS modified asphalt waterproof roll 2 can be smoothly discharged into the drainage ditch 5.

As shown in fig. 3 and 4, the annular storage box 9 is provided with a first C-shaped link 92 and a second C-shaped link 93, the cross section of the first C-shaped link 92 is circular, and both ends of the first C-shaped link 92 are fixed to the upper surface of the annular storage box 9 on the side away from the connecting pipe 6. The cross section of the second C-shaped connecting rod 93 is circular, both ends of the second C-shaped connecting rod 93 are fixed to the upper surface of the annular storage box 9 on the side away from the connecting pipe 6, and the second C-shaped connecting rod 93 and the first C-shaped connecting rod 92 are perpendicular to each other and intersect. Through setting up first C shape connecting rod 92 and second C shape connecting rod 93 to this be convenient for the staff holds first C shape connecting rod 92 and second C shape connecting rod 93 and upwards lifts, thereby be convenient for the staff and mention annular receiver 9, so that clear up the debris in the annular receiver 9.

As shown in fig. 4, a first rubber anti-slip sleeve 921 fixed to the first C-shaped link 92 is sleeved on the first C-shaped link 92, and the first rubber anti-slip sleeve 921 is located at a position of the first C-shaped link 92 near the middle portion thereof. A second rubber anti-slip sleeve 931 fixed with the second C-shaped connecting rod 93 is sleeved on the second C-shaped connecting rod 93, and the second rubber anti-slip sleeve 931 is located at a position, close to the middle portion of the second C-shaped connecting rod 93. First rubber antiskid cover 921 and second rubber antiskid cover 931 all adopt rubber materials to make, and the surface of first rubber antiskid cover 921 and second rubber antiskid cover 931 all has great coefficient of friction to this makes and has great frictional force between the staff's hand, is favorable to the staff to hold firmly first C shape connecting rod 92 and second C shape connecting rod 93, has reduced the probability that takes place to skid when the staff holds first C shape connecting rod 92 and second C shape connecting rod 93.

The implementation principle of the embodiment is as follows: set up first filter screen 7 in 6 upper ends of connecting pipe to this water that gets into in connecting pipe 6 has played good filtering action, makes the water that gets into in connecting pipe 6 obtain abundant filtration, has reduced the aquatic debris content that gets into in connecting pipe 6, thereby has reduced the probability that connecting pipe 6 takes place to block up, is favorable to making the surface gathered water in time discharge.

This scheme sets first filter screen 7 top to the arc, when a small amount of debris passed fence 411 and dropped to first filter screen 7 top, debris easily followed the arc surface landing at first filter screen 7 top to this has reduced the probability that debris are piled up in first filter screen 7 top, thereby makes first filter screen 7 can exert good filtering capability. Through setting up annular receiver 9, when the arc surface landing at 7 tops of first filter screen, debris easily get into annular receiver 9 and collect to this is convenient for the staff to concentrate the clearance to debris. Through setting up first C shape connecting rod 92 and second C shape connecting rod 93 to this be convenient for the staff holds first C shape connecting rod 92 and second C shape connecting rod 93 and upwards lifts, thereby be convenient for the staff and mention annular receiver 9, so that clear up the debris in the annular receiver 9.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a bituminous paving permeates water, includes by plain soil layer (1), the concrete layer (3) and the pitch layer (4) of permeating water that lay in proper order from bottom to top, should permeate water bituminous paving still including setting up in escape canal (5) of road both sides, its characterized in that: seted up ladder groove (41) on pitch layer (4), install fence (411) that are used for the separation debris in ladder groove (41), the lower cylindrical groove (32) of inner diapire intercommunication with last cylindrical groove (31) have been seted up on concrete layer (3) that permeates water and the position that ladder groove (41) correspond, the lower cylindrical groove (32) of inner diapire intercommunication with last cylindrical groove (31) still are seted up on concrete layer (3) that permeates water, lower cylindrical groove (32) internal fixation has connecting pipe (6), be used for filterable first filter screen (7) are installed to the upper end of connecting pipe (6), through drain pipe (61) intercommunication between connecting pipe (6) and escape canal (5).

2. A water-permeable asphalt pavement according to claim 1, characterized in that: connecting pipe (6) upper end is installed and is used for fixed subassembly (8) of fixed first filter screen (7), fixed subassembly (8) including run through bolt (81) that set up on the frame of first filter screen (7) and set up in connecting pipe (6) upper end and with bolt (81) threaded connection's screw hole (82).

3. A water-permeable asphalt pavement according to claim 1, characterized in that: the top of the first filter screen (7) is arc-shaped.

4. A water-permeable asphalt pavement according to claim 3, characterized in that: highly be greater than the height of diapire in last cylindrical groove (31) on connecting pipe (6), install annular receiver (9) between the inboard arc surface in last cylindrical groove (31) and the outside arc surface of connecting pipe (6), the outer diapire of annular receiver (9) and the interior diapire laminating in last cylindrical groove (31), just annular receiver (9) upper end open-ended height less than or equal to the height of connecting pipe (6) upper end.

5. A water-permeable asphalt pavement according to claim 4, characterized in that: a plurality of water seepage holes (91) are formed in the side wall and the bottom wall of the annular storage box (9).

6. A water-permeable asphalt pavement according to claim 5, characterized in that: a first C-shaped connecting rod (92) and a second C-shaped connecting rod (93) are fixed on the top wall of the annular storage box (9), and the second C-shaped connecting rod (93) is perpendicular to and intersected with the first C-shaped connecting rod (92).

7. The water-permeable asphalt pavement according to claim 6, characterized in that: the first C-shaped connecting rod (92) is sleeved with a first rubber anti-slip sleeve (921) fixed with the first C-shaped connecting rod, and the second C-shaped connecting rod (93) is sleeved with a second rubber anti-slip sleeve (931) fixed with the second C-shaped connecting rod.

8. A water-permeable asphalt pavement according to claim 1, characterized in that: and an SBS modified asphalt waterproof coiled material (2) is arranged between the plain soil layer (1) and the pervious concrete layer (3).

9. A water-permeable asphalt pavement according to claim 1, characterized in that: the drain pipe (61) is obliquely arranged, and the height of one end, close to the connecting pipe (6), of the drain pipe (61) is larger than the height of one end, far away from the connecting pipe (6), of the drain pipe (61).