CN214991014U

CN214991014U - Polymer particle bioreactor

Info

Publication number: CN214991014U
Application number: CN202121601803.4U
Authority: CN
Inventors: 王映璋
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-12-03
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a polymer particle bioreactor, which comprises a biological reaction tank and a polymer particle filter; the polymeric particulate filter includes a housing; a support plate is fixedly connected in the shell; a pressing plate is connected in the shell above the supporting plate in a sliding manner, and a high-molecular particle biological filter material is filled between the pressing plate and the supporting plate; water passing caps are respectively arranged on the pressing plate and the supporting plate; a combination sleeve is fixedly connected to the upper side of the compression plate; the motor is installed on the upper side of the shell; a transmission screw is fixedly connected to an output shaft of the motor; the utility model discloses in, because the automatic dispersion suspension characteristic of polymer granule biological filter material for this bioreactor can reach the effect of holding back the microorganism when polymer granule biological filter material is in the state that compresses tightly, but the full dispersion rotation reaches complete cleaning performance again when the state of relaxing, does not possess the jam possibility, need not draw out the change.

Description

Polymer particle bioreactor

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a Polymer particle bioreactor (PBR for short) for Polymer particle Bio Reactor.

Background

The Membrane Bioreactor (MBR) is a new sewage treatment process combining a membrane separation technology and a bioreactor, and mainly comprises a membrane component and the bioreactor, wherein the bioreactor degrades pollutants, and the membrane component plays a role in filtering to further purify water quality.

In the prior art, an MBR membrane bioreactor has pain points such as easy blockage, high manufacturing cost, high operating cost, high maintenance difficulty and the like because the filtering precision is unnecessarily high; therefore, a polymer particle bioreactor is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to remedy the deficiency of the prior art, the MBR membrane bioreactor solves the problem that the pain point is easily blocked, has high cost, high operation cost and large maintenance difficulty due to the unnecessary and excessively high filtering precision, and the utility model provides a polymer particle bioreactor.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a polymer particle bioreactor, which comprises a biological reaction tank and a polymer particle filter, wherein the polymer particle filter is positioned outside the biological reaction tank; the polymeric particulate filter includes a housing; the bottom of the shell is provided with a water inlet and a return port, and the top of the shell is provided with a water outlet and a back flushing port; a support plate is fixedly connected in the shell; a pressing plate is connected in the shell above the supporting plate in a vertical sliding mode through a sliding chute, and a high-molecular particle biological filter material is filled between the pressing plate and the supporting plate; water passing caps are respectively arranged on the pressing plate and the supporting plate; a combination sleeve is fixedly connected to the upper side of the compression plate; the motor is installed on the upper side of the shell; a transmission screw is fixedly connected to an output shaft of the motor, and the lower end of the transmission screw extends into the shell and is rotatably connected with the supporting plate; the transmission screw penetrates through the combination sleeve and is connected with the combination sleeve through the screw rod nut pair; when the device works, when the device is used for filtering operation, the motor is started to drive the transmission screw to rotate, and then the combination sleeve drives the compression plate to move downwards to extrude the polymer particle biological filter material on the lower side, gaps between the filter materials are reduced to enable the filter materials to be in a compression state, the size of most individual microorganisms is between 0.5 and 5 mu m, the precision of the polymer particle filter can reach 1 mu m, and the surfaces of the microorganisms are provided with mucopolysaccharide, so that agglomeration is inevitable, therefore, the polymer particle filter can intercept most microorganisms, the waste of the microorganisms is avoided, the cost of sewage treatment is reduced, when the device is used for backwashing operation, the motor drives the transmission screw to rotate backwards, and then the combination sleeve drives the compression plate to move upwards to enable the polymer particle biological filter material to be in a relaxation state, and because of the automatic dispersion and suspension characteristics of the polymer particle biological filter material, when the cleaning device is loosened, the cleaning device can be fully dispersed and rotated to reach a complete cleaning state, has no possibility of blockage, and does not need to be fished out for replacement.

Preferably, a water inlet of the polymer particle filter is connected with a first pipe, and a back flushing port of the polymer particle filter is connected with a second pipe; a first valve and a second valve are respectively arranged on the first pipe and the second pipe; a third pipe is arranged in the biological reaction tank; the lower end of the third pipe is connected with a lift pump, and the upper end of the third pipe is connected with the first pipe and the second pipe; a fourth pipe is connected between the return port and the biological reaction tank; when the device works, when a filtering operation is carried out, the motor is started, the transmission screw is driven to rotate, the combination sleeve drives the pressing plate to move downwards, the polymer particle biological filter material on the lower side is extruded, gaps between the filter materials are reduced, the filter materials are in a pressing state, the first valve is opened, the second valve is closed, sewage is pumped to the water inlet, the sewage is discharged from the water outlet after passing through the polymer particle biological filter material, when the back washing operation is carried out, the transmission screw is driven to rotate reversely through the motor, the combination sleeve drives the pressing plate to move upwards, the polymer particle biological filter material is in a loosening state, the second valve is opened simultaneously, the first valve is closed, water is pumped to the back washing port, water flows wash the polymer particle biological filter material, and microorganisms intercepted in the filter material flow back to the biological reaction tank.

Preferably, the biological reaction tank comprises an aerobic biological treatment tank and an anaerobic biological treatment tank; a fifth pipe is arranged in the aerobic biological treatment tank; the upper end of the fifth pipe is connected with an aeration fan, and the lower end of the fifth pipe is connected with a sixth pipe in the horizontal direction; the spray pipe is fixedly connected to the upper side of the number six pipe and is communicated with the number six pipe; a first bracket is fixedly connected in the spray pipe; the outlet end of the spray pipe is rotatably connected with a spray head; a second bracket is fixedly connected in the spray head; a worm is arranged in the spray pipe, one end of the worm is rotatably connected with the first bracket, and the other end of the worm is fixedly connected with the second bracket; the outer end of the worm is fixedly connected with a third bracket, and one end of the third bracket, which extends out of the spray head, is fixedly connected with a first arc-shaped plate; the outlet end of the spray head is fixedly connected with a second arc-shaped plate; the during operation provides oxygen to No. five pipes and No. six pipes through the aeration fan, and when the air current passed through the spray tube, the promotion worm rotated, and then the worm drove the shower nozzle rotatory for the rotatory limit in shower nozzle limit upwards jets out, and an arc and No. two arcs rebound the air current twice simultaneously, produce a large amount of bubbles, increase the area of contact of oxygen and water, thereby provide more sufficient oxygen for the microorganism, improve biological reaction efficiency.

Preferably, a combination ring is fixedly connected to the outer side of the spray head; the outer side of the combination ring is fixedly connected with a water wheel blade; during operation, the shower nozzle rotates, and it is rotatory to drive the water wheel blade through the joint ring, carries out the small-scale stirring to the water of shower nozzle top to improved the dissolution rate and the dissolution degree of oxygen bubble in aqueous, further provide more sufficient oxygen for the microorganism, improved biological reaction efficiency.

Preferably, the two ends of the sixth pipe are fixedly connected with connecting plugs; a plurality of rubber tubes are fixedly connected to the outer side of the connecting plug and are communicated with the number six tube through the connecting plug; the rubber tube is provided with a plurality of small holes, and the small holes are communicated with the rubber tube; during the during operation, the air current passes through No. six pipe and connects during the stopper enters the rubber tube, and then outwards spouts through the aperture on the rubber tube, because the rubber tube is elastic for the rubber tube carries out irregular swing in air-jet, thereby increases the jet-propelled scope, improves the bubble volume that generates, further increases the area of contact of oxygen and water for the biological reaction process.

The utility model discloses an useful part lies in:

1. a polymer particle bioreactor, because polymer particle biological filter material's automatic dispersion suspension characteristic for this bioreactor can reach the effect of holding back the microorganism when polymer particle biological filter material is in the state that compresses tightly, but full dispersion rotation reaches complete cleaning performance again when relaxing the state, does not possess the jam possibility, need not draw out the change.

2. A polymer granule bioreactor, provide oxygen to No. five pipes and No. six pipes through aeration fan, when the air current passes through the spray tube, promote the worm and rotate, and then the worm drives the shower nozzle rotation for the rotatory limit in shower nozzle limit upwards spouts gas, and an arc and No. two arcs rebound the air current twice simultaneously, produce a large amount of bubbles, increase the area of contact of oxygen and water, thereby provide more sufficient oxygen for the microorganism, improve biological reaction efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention in the first embodiment;

FIG. 2 is a cross-sectional view of a polymeric particulate filter according to one embodiment;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is an enlarged view of a portion B of FIG. 3;

FIG. 5 is a schematic structural diagram of a showerhead according to an embodiment;

fig. 6 is a schematic structural diagram of the present invention in the second embodiment.

In the figure: 1. a polymeric particle filter; 11. a housing; 12. a water inlet; 13. a return port; 14. a water outlet; 15. a back flushing port; 16. a support plate; 17. a compression plate; 18. a polymer particle biological filter material; 19. a water passing cap; 20. a coupling sleeve; 21. a motor; 22. a drive screw; 2. a first pipe; 3. a second pipe; 4. a first valve; 5. a second valve; 6. a third pipe; 7. a lift pump; 8. a fourth tube; 9. an aerobic biological treatment tank; 10. an anaerobic biological treatment tank; 91. a fifth pipe; 92. an aeration fan; 93. a sixth pipe; 94. a nozzle; 95. a first bracket; 96. a spray head; 97. a second bracket; 98. a worm; 99. a third bracket; 100. a first arc plate; 101. a second arc plate; 102. a binding ring; 103. a water wheel blade; 104. a connecting plug; 105. a rubber tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-5, a polymer particle bioreactor comprises a biological reaction tank and a polymer particle filter 1, wherein the polymer particle filter 1 is located outside the biological reaction tank; the polymer particle filter 1 includes a housing 11; the bottom of the shell 11 is provided with a water inlet 12 and a return port 13, and the top of the shell 11 is provided with a water outlet 14 and a back flushing port 15; a support plate 16 is fixedly connected in the shell 11; a pressing plate 17 is connected in the shell 11 above the supporting plate 16 in a vertical sliding mode through a sliding groove, and a high molecular particle biological filter material 18 is filled between the pressing plate 17 and the supporting plate 16; the pressing plate 17 and the supporting plate 16 are both provided with water passing caps 19; a combination sleeve 20 is fixedly connected to the upper side of the compression plate 17; the upper side of the shell 11 is provided with a motor 21; a transmission screw 22 is fixedly connected to an output shaft of the motor 21, and the lower end of the transmission screw 22 extends into the shell 11 and is rotatably connected with the support plate 16; the transmission screw 22 penetrates through the combination sleeve 20 and is connected with the combination sleeve through a screw rod nut pair; when the device works, when the device is used for filtering operation, the motor 21 is started to drive the transmission screw 22 to rotate, the combination sleeve 20 drives the compression plate 17 to move downwards to extrude the polymer particle biological filter material 18 on the lower side, gaps between the filter materials are reduced to be in a compression state, most microorganisms are 0.5-5 microns in size, the precision of the polymer particle filter 1 can reach 1 micron, the outer surfaces of the microorganisms are provided with mucopolysaccharide, and agglomeration is inevitable, so that the polymer particle filter 1 can intercept most microorganisms, the waste of the microorganisms is avoided, the cost of sewage treatment is reduced, when the device is used for backwashing operation, the motor 21 drives the transmission screw 22 to rotate reversely, the combination sleeve 20 drives the compression plate 17 to move upwards, the polymer particle biological filter material 18 is in a relaxation state, and because of the automatic dispersion and suspension characteristics of the polymer particle biological filter material 18, when the cleaning device is loosened, the cleaning device can be fully dispersed and rotated to reach a complete cleaning state, has no possibility of blockage, and does not need to be fished out for replacement.

The water inlet 12 of the polymer particle filter 1 is connected with a first pipe 2, and the back flushing port 15 is connected with a second pipe 3; a first valve 4 and a second valve 5 are respectively arranged on the first pipe 2 and the second pipe 3; a third pipe 6 is arranged in the biological reaction tank; the lower end of the third pipe 6 is connected with a lift pump 7, and the upper end of the third pipe is connected with the first pipe 2 and the second pipe 3; a fourth pipe 8 is connected between the return port 13 and the biological reaction tank; when in work and filtration operation, the motor 21 is started to drive the transmission screw 22 to rotate, the combination sleeve 20 drives the compacting plate 17 to move downwards, the polymer particle biological filter material 18 at the lower side is extruded, the gap between the filter materials is reduced, and the filter materials are in a compacting state, simultaneously, the first valve 4 is opened, the second valve 5 is closed, sewage is pumped to the water inlet 12, passes through the polymer particle biological filter material 18 and then is discharged from the water outlet 14, when the back washing operation is carried out, the motor 21 drives the transmission screw 22 to rotate reversely, the combination sleeve 20 drives the compacting plate 17 to move upwards, so that the polymer particle biological filter material 18 is in a relaxed state, meanwhile, the second valve 5 is opened, the first valve 4 is closed, water is pumped to the back washing port 15, water flow washes the polymer particle biological filter material 18, and microorganisms trapped in the filter material flow back to the biological reaction tank.

The biological reaction tank comprises an aerobic biological treatment tank 9 and an anaerobic biological treatment tank 10; a fifth pipe 91 is arranged in the aerobic biological treatment tank 9; the upper end of the fifth pipe 91 is connected with an aeration fan 92, and the lower end is connected with a sixth pipe 93 in the horizontal direction; a spray pipe 94 is fixedly connected to the upper side of the sixth pipe 93, and the spray pipe 94 is communicated with the sixth pipe 93; a first bracket 95 is fixedly connected in the spray pipe 94; the outlet end of the spray pipe 94 is rotatably connected with a spray head 96; a second bracket 97 is fixedly connected in the spray head 96; a worm 98 is arranged in the spray pipe 94, one end of the worm 98 is rotatably connected with the first bracket 95, and the other end of the worm 98 is fixedly connected with the second bracket 97; a third bracket 99 is fixedly connected to the outer end of the worm 98, and a first arc-shaped plate 100 is fixedly connected to one end of the third bracket 99, which extends out of the spray head 96; the outlet end of the spray head 96 is fixedly connected with a second arc-shaped plate 101; during operation, provide oxygen to No. five pipes 91 and No. six pipe 93 through aeration fan 92, when the air current passes through spray tube 94, promote worm 98 and rotate, and then worm 98 drives shower nozzle 96 rotatory for 96 limit rotatory limit upwards jet-propelled, the arc 100 and No. two arcs 101 bounce-backs the air current twice simultaneously, produce a large amount of bubbles, increase the area of contact of oxygen and water, thereby provide more sufficient oxygen for the microorganism, improve biological reaction efficiency.

A combination ring 102 is fixedly connected to the outer side of the nozzle 96; the outer side of the combination ring 102 is fixedly connected with a water wheel blade 103; during operation, when the shower nozzle 96 rotated, it was rotatory through combination ring 102 drive water wheel blade 103, stirred on a small scale to the water of shower nozzle 96 top to improved the dissolution rate and the dissolution degree of oxygen bubble in aqueous, further provided more sufficient oxygen for the microorganism, improved biological reaction efficiency.

The two ends of the sixth pipe 93 are fixedly connected with connecting plugs 104; a plurality of rubber tubes 105 are fixedly connected to the outer side of the connecting plug 104, and the rubber tubes 105 are communicated with the number six tube 93 through the connecting plug 104; a plurality of small holes are formed in the rubber tube 105, and the small holes are communicated with the rubber tube 105; during the operation, the air current passes through No. six pipe 93 and connects during stopper 104 gets into rubber tube 105, and then outwards spouts through the aperture on the rubber tube 105, because rubber tube 105 has elasticity for rubber tube 105 carries out irregular swing in jet-propelled, thereby increases the jet-propelled scope, improves the bubble volume of generation, further increases the area of contact of oxygen and water for the biological reaction process.

Example two

Referring to fig. 6, as another embodiment of the present invention, in a first comparative example, the polymer particle filter 1 can be directly placed in the aerobic biological treatment tank 9 or the anaerobic biological treatment tank 10, and connected by a plurality of pipelines, so as to achieve the effects of saving floor space and reducing difficulty of pipeline construction.

The working principle is that when the filtering operation is carried out, the motor 21 is started to drive the transmission screw 22 to rotate, and then the combination sleeve 20 drives the compression plate 17 to move downwards to extrude the polymer particle biological filter material 18 at the lower side, so as to reduce gaps between the filter materials and enable the filter materials to be in a compression state, the size of most individual microorganisms is 0.5-5 mu m, the precision of the polymer particle filter 1 can reach 1 mu m, and the outer surface of the microorganisms has mucopolysaccharide, so that agglomeration is inevitable, therefore, the polymer particle filter 1 can intercept most microorganisms, thereby not causing the waste of the microorganisms, reducing the cost of sewage treatment, when the backwashing operation is carried out, the motor 21 drives the transmission screw 22 to rotate reversely, and then the combination sleeve 20 drives the compression plate 17 to move upwards, so that the polymer particle biological filter material 18 is in a relaxation state, because of the automatic dispersion and suspension property of the polymer particle biological filter material 18, the device can fully disperse and rotate to reach a complete cleaning state when being relaxed, has no possibility of blockage, and does not need to be fished out for replacement; when the filtering operation is carried out, the motor 21 is started to drive the transmission screw 22 to rotate, the combination sleeve 20 drives the pressing plate 17 to move downwards to extrude the polymer particle biological filter material 18 on the lower side, gaps between the filter materials are reduced to be in a pressing state, the first valve 4 is opened, the second valve 5 is closed, sewage is pumped to the water inlet 12 and then is discharged from the water outlet 14 after passing through the polymer particle biological filter material 18, when the backwashing operation is carried out, the motor 21 drives the transmission screw 22 to rotate reversely, the combination sleeve 20 drives the pressing plate 17 to move upwards to enable the polymer particle biological filter material 18 to be in a loosening state, the second valve 5 is opened, the first valve 4 is closed, water is pumped to the backwashing port 15, water flow washes the polymer particle biological filter material 18, and microorganisms intercepted in the filter material flow back to the biological reaction tank; oxygen is provided for the fifth pipe 91 and the sixth pipe 93 through the aeration fan 92, when airflow passes through the spray pipe 94, the worm 98 is pushed to rotate, and then the worm 98 drives the spray head 96 to rotate, so that the spray head 96 rotates and sprays air upwards, meanwhile, the first arc-shaped plate 100 and the second arc-shaped plate 101 rebound the airflow twice, a large amount of bubbles are generated, the contact area of the oxygen and water is increased, and therefore more sufficient oxygen is provided for microorganisms, and the biological reaction efficiency is improved; when the spray head 96 rotates, the water wheel blades 103 are driven to rotate through the combination ring 102, and water above the spray head 96 is stirred in a small scale, so that the dissolving rate and the dissolving degree of oxygen bubbles in the water are improved, more sufficient oxygen is further provided for microorganisms, and the biological reaction efficiency is improved; airflow enters the rubber tube 105 through the number six tube 93 and the connecting plug 104 and then is ejected outwards through a small hole in the rubber tube 105, and the rubber tube 105 has elasticity, so that the rubber tube 105 performs irregular swinging while ejecting air, the air ejection range is enlarged, the generated bubble amount is increased, the contact area of oxygen and water is further increased, and the biological reaction process is accelerated; the polymer particle filter 1 can be directly placed in the aerobic biological treatment tank 9 or the anaerobic biological treatment tank 10 and connected through a plurality of pipelines, so that the effects of saving the occupied area and reducing the difficulty of pipeline construction are achieved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A polymer particle bioreactor, which is characterized in that: comprises a biological reaction tank and a polymer particle filter (1), wherein the polymer particle filter (1) is positioned outside the biological reaction tank; the polymeric particle filter (1) comprises a housing (11); the bottom of the shell (11) is provided with a water inlet (12) and a return opening (13), and the top of the shell (11) is provided with a water outlet (14) and a back flushing opening (15); a support plate (16) is fixedly connected in the shell (11); a pressing plate (17) is connected in the shell (11) above the supporting plate (16) in a vertical sliding mode through a sliding groove, and a high molecular particle biological filter material (18) is filled between the pressing plate (17) and the supporting plate (16); the pressing plate (17) and the supporting plate (16) are both provided with water passing caps (19); a combination sleeve (20) is fixedly connected to the upper side of the compression plate (17); a motor (21) is arranged on the upper side of the shell (11); a transmission screw rod (22) is fixedly connected to an output shaft of the motor (21), and the lower end of the transmission screw rod (22) extends into the shell (11) and is rotatably connected with the supporting plate (16); the transmission screw rod (22) penetrates through the combination sleeve (20) and is connected with the combination sleeve through a screw rod nut pair.

2. A polymeric particle bioreactor as claimed in claim 1, wherein: a water inlet (12) of the polymer particle filter (1) is connected with a first pipe (2), and a back flushing port (15) is connected with a second pipe (3); the first pipe (2) and the second pipe (3) are respectively provided with a first valve (4) and a second valve (5); a third pipe (6) is arranged in the biological reaction tank; the lower end of the third pipe (6) is connected with a lift pump (7), and the upper end of the third pipe is connected with the first pipe (2) and the second pipe (3); a fourth pipe (8) is connected between the return port (13) and the biological reaction tank.

3. A polymeric particle bioreactor as claimed in claim 2, wherein: the biological reaction tank comprises an aerobic biological treatment tank (9) and an anaerobic biological treatment tank (10); a fifth pipe (91) is arranged in the aerobic biological treatment tank (9); the upper end of the fifth pipe (91) is connected with an aeration fan (92), and the lower end of the fifth pipe is connected with a sixth pipe (93) in the horizontal direction; a spray pipe (94) is fixedly connected to the upper side of the sixth pipe (93), and the spray pipe (94) is communicated with the sixth pipe (93); a first bracket (95) is fixedly connected in the spray pipe (94); the outlet end of the spray pipe (94) is rotatably connected with a spray head (96); a second bracket (97) is fixedly connected in the spray head (96); a worm (98) is arranged in the spray pipe (94), one end of the worm (98) is rotatably connected with the first bracket (95), and the other end of the worm (98) is fixedly connected with the second bracket (97); a third bracket (99) is fixedly connected to the outer end of the worm (98), and a first arc-shaped plate (100) is fixedly connected to one end, extending out of the spray head (96), of the third bracket (99); and the outlet end of the spray head (96) is fixedly connected with a second arc-shaped plate (101).

4. A polymeric particle bioreactor as claimed in claim 3, wherein: a combination ring (102) is fixedly connected to the outer side of the spray head (96); the outer side of the combination ring (102) is fixedly connected with a water wheel blade (103).

5. A polymeric particle bioreactor as claimed in claim 4, wherein: the two ends of the sixth pipe (93) are fixedly connected with connecting plugs (104); a plurality of rubber tubes (105) are fixedly connected to the outer side of the connecting plug (104), and the rubber tubes (105) are communicated with the number six tube (93) through the connecting plug (104); the rubber tube (105) is provided with a plurality of small holes, and the small holes are communicated with the rubber tube (105).