CN212798435U

CN212798435U - Power plant's conveyer belt cleaning device

Info

Publication number: CN212798435U
Application number: CN202021838186.5U
Authority: CN
Inventors: 贺玉锋; 余宝同; 王文勃
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-03-26
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a power plant conveyor belt cleaning device, which comprises a first cleaning mechanism, a second cleaning mechanism and a collecting mechanism, wherein the first cleaning mechanism is positioned below a first roller and is in extrusion contact with a belt, the second cleaning mechanism is positioned on the right side of the first cleaning mechanism and is used for secondarily cleaning the belt, and the collecting mechanism is used for collecting cleaning adhesive substances on the belt after passing through the first cleaning mechanism and the second cleaning mechanism, the first cleaning mechanism is positioned below the roller, the phenomenon that the belt shrinks inwards when the belt is cleaned, so that the friction force between the first cleaning mechanism and the belt is smaller and the adhesive substances cannot be cleaned is avoided, the second cleaning mechanism is arranged for secondarily cleaning the belt cleaned by the first cleaning mechanism, the cleaning effect is good, the collecting mechanism is arranged, the cleaning adhesive substances cleaned by the first cleaning mechanism are convenient to be collected, and the adhesive substances are prevented from scattering in the air, and meanwhile, the wastewater flowing out of the second cleaning mechanism is recycled, so that resources are saved.

Description

Power plant's conveyer belt cleaning device

Technical Field

The utility model relates to a power generation facility technical field, concretely relates to conveyer belt cleaning device of power plant.

Background

In the process of thermal power generation of a power plant, a conveyor is adopted to convey pulverized coal required by combustion into a combustion furnace for combustion, heat generated by the combustion furnace is converted into electric energy through a series of equipment, the conveyor is used as one of the most main equipment of a coal conveying system of a thermal power plant, the conveying capacity plays an important role in determining the scheme of the whole coal conveying system, the surface of a belt of a power plant conveyor has adhesive substances in the long-term conveying process, in the process of conveying the pulverized coal, a large amount of adhesive materials can remain on the belt, so that the friction force of the belt is reduced, meanwhile, the adhesive remained on the belt causes air pollution, in addition, the adhesive stays on the belt for a long time, and can absorb surrounding moisture to moisten the transported pulverized coal, so that the combustion of the pulverized coal is influenced, and the problems of mechanical abrasion, conveyer belt jumping and the like can be caused when the adhesive is contacted with a conveyer roller.

The general single electronic round brush of adoption of current cleaning device, and electronic round brush generally all sets up between two cylinders of conveyer, and when round brush and belt contact, the belt can inwards shrink, leads to frictional force between round brush and the belt not enough to cause the adhered material clearance unclean, and has increased extra power device, in addition, the mode of clearance belt and the position of clearance belt are single, can not carry out iterative clearance to the belt and reach better clearance effect.

Therefore, it is a problem to provide a power plant conveyor belt cleaning device which can repeatedly clean different positions of the belt and has a good cleaning effect.

Disclosure of Invention

To the not enough of above-mentioned prior art, the utility model aims at providing a carry out the repeated power plant's conveyer belt cleaning device that cleans and clean effectually to the different positions of belt.

The purpose of the utility model is realized like this:

the utility model provides a power plant's conveyer belt cleaning device, including be located first cylinder below and with the first mechanism that cleans of belt extrusion contact, be located the first right side that cleans the mechanism and clean the mechanism to the second that the belt carries out the secondary, a collection mechanism for collecting the clearance stickies that cleans on the mechanism back belt through first mechanism and the second that cleans, the second cleans the mechanism and includes the trunk line of being connected with water source or collection mechanism, be connected with the trunk line and be located the belt below and clean the first water spray mechanism to the belt, be connected through first connecting pipe with the trunk line and clean the second water spray mechanism that the mechanism cleaned first.

First water spray mechanism includes and is connected and is located the first spray pipe of belt below, is located a plurality of first shower nozzles of first spray pipe upper surface with the trunk line, and a plurality of first shower nozzles are along the fore-and-aft direction evenly distributed of first spray pipe, and the length of the fore-and-aft direction of first spray pipe equals with the width of belt fore-and-aft direction.

The second water spray mechanism comprises a second water spray pipe which is connected with the main pipeline and is positioned on the right side of the first cleaning mechanism and a plurality of second spray heads which are positioned on the left side of the second water spray pipe, wherein the plurality of second spray heads are uniformly distributed along the front and back direction of the second water spray pipe, and the length of the front and back direction of the second water spray pipe is equal to the width of the front and back direction of the first cleaning mechanism.

The first cleaning mechanism comprises a cleaning barrel, a first connecting shaft and a driving mechanism, wherein the cleaning barrel is located below the first roller and is in extrusion contact with the belt, the first connecting shaft is located at the front end and the rear end of the cleaning barrel, and the driving mechanism is fixedly connected with the first connecting shaft and drives the cleaning barrel and the first roller to rotate synchronously.

The driving mechanism comprises a first driving wheel sleeved on the first connecting shaft, a second driving wheel sleeved on the second connecting shaft of the first roller and a connecting belt connected with the first driving wheel and the second driving wheel, the first roller drives the second connecting shafts at the two ends of the first roller to rotate, the second connecting shafts drive the second driving wheel to rotate, and the second driving wheel drives the first driving wheel and the cleaning barrel to rotate through the connecting belt.

Collect the mechanism including collecting the funnel, with collect the funnel bottom through the pipe chute of second connecting pipe intercommunication sediment the device, be located the suction pump at pipe chute sediment device's top, the delivery port of suction pump passes through the third connecting pipe and is connected with the trunk line, the water inlet of suction pump passes through the upper portion intercommunication of fourth connecting pipe and pipe chute sediment device.

And the third connecting pipe is provided with a valve and a booster pump for increasing water pressure, and the other end of the second connecting pipe is connected with a sewage inlet of the inclined pipe sedimentation device.

The belt cleaning device is characterized by further comprising a drying mechanism for drying the cleaned belt, the drying mechanism is fixedly connected with the support through the supporting plate, and the drying mechanism is located on the right side of the second cleaning mechanism.

The drying mechanism comprises an air heater fixedly connected with the supporting plate, an air pipe connected with an outlet of the air heater through a sixth connecting pipe, a first air outlet mechanism communicated with the air pipe and positioned right above the air pipe, a second air outlet mechanism positioned on the left side of the first air outlet mechanism and communicated with the air pipe, and a third air outlet mechanism positioned on the right side of the first air outlet mechanism and communicated with the air pipe, wherein the length of the air pipe in the front-back direction is equal to the width of the belt in the front-back direction, and the second air outlet mechanism and the third air outlet mechanism are symmetrically arranged.

First air-out mechanism includes a plurality of first play tuber pipes along tuber pipe fore-and-aft direction evenly distributed, and the air outlet of first play tuber pipe is located directly over, and second air-out mechanism includes a plurality of second play tuber pipes along tuber pipe fore-and-aft direction evenly distributed, and the air outlet that the second goes out the tuber pipe is 30~60 with the contained angle between the belt, and third air-out mechanism includes a plurality of third play tuber pipes along tuber pipe fore-and-aft direction evenly distributed, and the air outlet that the third goes out the tuber pipe is 30~60 with the contained angle between the belt.

The utility model has the advantages that: the utility model discloses first mechanism that cleans is located the below of cylinder, the belt is shrink inwards when avoiding appearing cleaning the belt, make first friction between mechanism and the belt less and can't make the phenomenon that the adhesion matter clean up, the second cleans the setting of mechanism, the belt after cleaning the mechanism to first cleans carries out the secondary and cleans, it is effectual to clean, collect the setting of mechanism, be convenient for collect the adhesion matter that the mechanism cleaned first, avoid the adhesion matter to fly away contaminated air in the air, clean the waste water that the mechanism flowed with the second simultaneously and carry out reuse, resources are saved, the setting of stoving mechanism, be convenient for clean the belt after the mechanism cleans the second and dry, keep the drying of belt.

Drawings

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

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic structural view of a second sweeping mechanism in the direction A;

FIG. 4 is a schematic structural view of the drying mechanism of the present invention;

FIG. 5 is a schematic structural view of a drying mechanism in the direction B;

in the figure: the cleaning device comprises a first roller 1, a belt 2, a support 3, a first cleaning mechanism 4, a second cleaning mechanism 5, a collecting mechanism 6, a main pipeline 7, a first water spraying mechanism 8, a second water spraying mechanism 9, a first connecting pipe 10, a collecting funnel 11, a second connecting pipe 12, an inclined pipe settling device 13, a water suction pump 14, a drying mechanism 15, a support plate 16, a first connecting shaft 17, a cleaning barrel 18, a second connecting shaft 19, a first driving wheel 20, a second driving wheel 21, a connecting belt 22, a motor 23, a first water spraying pipe 24, a first nozzle 25, a second water spraying pipe 26, a second nozzle 27, a fifth connecting pipe 28, a valve 29, a booster pump 30, a sewage inlet 31, a hot air fan 32, a sixth connecting

pipe

33, 34, a first air outlet pipe 35, a second air outlet pipe 36 and a third air outlet pipe 37.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1:

as shown in fig. 1 to 3, a belt cleaning device for a power plant conveyor comprises a first cleaning mechanism 4 which is positioned below a first roller 1 and is in extrusion contact with a belt 2, a second cleaning mechanism 5 which is positioned on the right side of the first cleaning mechanism 4 and cleans the belt 2 for the second time, a collecting mechanism 6 for collecting cleaning adhesive substances on the belt after passing through the first cleaning mechanism 4 and the second cleaning mechanism 5, wherein the second cleaning mechanism 5 comprises a main pipe 7 connected with a water source or the collecting mechanism 6, a first water spraying mechanism 8 which is connected with the main pipe 7 and is positioned below the belt 2 and cleans the belt 2, a second water spraying mechanism 9 which is connected with the main pipe 7 through a first connecting pipe 10 and cleans the first cleaning mechanism 4, a second roller is arranged on the right side of the first roller 1, second spraying mechanisms 19 at the front end and the rear end of the first roller 1 are connected with a support 3 through bearings, the connecting axle at both ends passes through the bearing with support 3 around the second cylinder to be connected, and motor 23 drives first cylinder 1 through second connecting axle 19 and rotates, then first cylinder 1 drives the second cylinder through belt 2 and rotates, and motor 23 is fixed with support 3 through the connecting plate, and first cylinder 1 anticlockwise rotates, makes the belt of first cylinder 1 top and second cylinder top remove from the right side left side, and the belt of first cylinder 1 below and second cylinder below removes from the left side right side. In the process that the belt 2 below the first roller 1 and the belt 2 below the second roller move from left to right, the belt 2 is cleaned for multiple times by the first cleaning mechanism 4 and the second cleaning mechanism 5 in sequence, the cleaning effect is good, the first water spraying mechanism 8 cleans the lower part of the belt 2 for the second time, the second water spraying mechanism 9 cleans the first cleaning mechanism 4 to avoid more adhesive substances from adhering to the first cleaning mechanism 4 to influence the cleaning effect on the belt 2, the main pipeline 7 is fixed with the bracket 3 through a connecting rod to facilitate the fixation of the main pipeline 7, the main pipeline 7 is connected with a water source through a fifth connecting pipe 28 to facilitate the water supply of the first water spraying mechanism 8 and the second water spraying mechanism 9, the first water spraying mechanism 8 comprises a first water spraying pipe 24 which is connected with the main pipeline 7 and is positioned below the belt and a plurality of first spray nozzles 25 which are positioned on the upper surface of the first water spraying pipe 24, a plurality of first shower nozzles 25 are along 24 fore-and-aft direction evenly distributed of first spray pipe, and the length of the fore-and-aft direction of first spray pipe 24 equals with the width of belt 2 fore-and-aft direction, and the delivery port of a plurality of first shower nozzles 25 faces belt 2, washes the adhesion thing that will not be cleaned by first cleaning mechanism, cleans effectually, and the sewage after cleaning is collected through collection mechanism 6. The second water spray mechanism 9 comprises a second water spray pipe 26 which is connected with the main pipeline 7 and is positioned on the right side of the first cleaning mechanism 4, a plurality of second spray nozzles 27 which are positioned on the left side surface of the second water spray pipe 26, the length directions of the plurality of second spray nozzles 27 in the front-back direction of the second water spray pipe 26 are uniformly distributed, the length in the front-back direction of the second water spray pipe 26 is equal to the width in the front-back direction of the first cleaning mechanism 4, the plurality of second spray nozzles 27 face the first cleaning mechanism 4 to spray water, an adhered object adhered to the first cleaning mechanism 4 is cleaned completely, and the cleaned sewage is collected through the collecting mechanism 6.

First cleaning mechanism 4 is including the below that is located first cylinder 1 and with belt 2 extrusion contact's a section of thick bamboo 18 that cleans, be located the first connecting axle 17 at the front and back both ends of a section of thick bamboo 18 that cleans, with first connecting axle 17 fixed connection and drive clean a section of thick bamboo 18 and first cylinder 1 synchronous pivoted actuating mechanism, because clean a section of thick bamboo 18 and be located first cylinder 1 under, clean a section of thick bamboo 18 and belt 2 conflict and clean the adhesion thing on belt 2 totally, when cleaning a section of thick bamboo 18 and cleaning belt 2 promptly, belt 2 has been avoided shrinking inwards, the frictional force between a section of thick bamboo 18 and the belt 2 is less and can't make adhesion thing clean up's phenomenon. The driving mechanism comprises a first driving wheel 20 sleeved on a first connecting shaft 17, a second driving wheel 21 sleeved on a second connecting shaft 19 of the first roller 1, and a connecting belt 22 connected with the first driving wheel 20 and the second driving wheel 21, wherein the first roller 1 drives the second connecting shaft 19 at two ends of the first roller to rotate, the second connecting shaft 19 drives the second driving wheel 21 to rotate, the second driving wheel 21 drives the first driving wheel 20 and the cleaning barrel 18 to rotate through the connecting belt 22, the outer surface of the first connecting shaft 17 is fixedly connected with a central hole of the first driving wheel 20 through a bolt component, the outer surface of the second connecting shaft 19 is fixedly connected with a central hole of the second driving wheel 21 through a bolt component, the first driving wheel 20 is positioned on the first connecting shaft 17 at the right side of the cleaning barrel 18, the second driving wheel 21 is positioned on the second connecting shaft 19 at the right side of the first roller 1, and the second connecting shaft 19 at the left side of the first roller 1, the motor 23 drives the first roller 1 to rotate, then the first roller 1 drives the second connecting shaft 19 to rotate, the second connecting shaft 19 and the second driving wheel 21 rotate synchronously, the second driving wheel 21 drives the first driving wheel 21 to rotate synchronously through the connecting belt 22, and the first driving wheel 21 drives the first connecting shaft 17 and the cleaning barrel 18 to rotate synchronously, so that the cleaning barrel 18 cleans the belt 2, and the cleaning effect is good.

Collect mechanism 6 including collecting funnel 11, with collect 11 bottoms of funnel through the pipe chute of second connecting pipe 12 intercommunication sediment device 13, be located the suction pump 14 at pipe chute sediment device 13's top, the delivery port of suction pump 14 passes through the third connecting pipe and is connected with trunk line 7, the water inlet of suction pump 14 passes through the upper portion intercommunication of fourth connecting pipe and pipe chute sediment device 13. The third connecting pipe is provided with a valve 29 and a booster pump 30 for increasing water pressure, the other end of the second connecting pipe 12 is connected with a sewage inlet 31 of the inclined pipe sedimentation device 13, the cleaning barrel 18, the first cleaning mechanism 8 and the second cleaning mechanism 9 are positioned in the collecting funnel 11, the width of the collecting funnel 11 in the front-back direction is larger than that of the belt 2 in the front-back direction, so that dust cleaned by the cleaning barrel 18 and sewage of the first water spraying mechanism 8 and the second water spraying mechanism 9 can be conveniently collected, the collected sewage enters the inclined pipe sedimentation device 13 through the second connecting pipe 12, the settled sewage enters the main pipe 7 through the water suction pump 14 for cyclic utilization and flushing the belt 2, the main pipe 7 is simultaneously connected with a high-pressure water source through a fifth connecting pipe 28, the inclined pipe sedimentation device 13 is positioned below the belt 2, the top of the inclined pipe sedimentation device 13 is provided with a water suction pump 14, the third connecting pipe is provided with the booster pump 30, the pressure of water in the main pipeline 7 is convenient to increase, the suction pump 14 adopts an IQ type single-stage single-suction centrifugal pump, the booster pump 30 adopts a GD vertical single-stage pipeline type booster pump, the inclined tube sedimentation device 13 adopts a CXXG inclined tube sedimentation tank of Shandong creative Hua-environmental engineering Limited company, the length of the inclined tube sedimentation device 13 is 3m, the width is 4m, and the height is 15m, the washed sewage flows into the inclined tube sedimentation device 13 through a sewage inlet 31, the water is located above the inclined tube sedimentation device 13 after sedimentation, the suction pump 14 pumps the water into the main pipeline 7 through a third connecting pipe, the water is sent into the first water spraying mechanism 8 and the second water spraying mechanism 9 for washing after passing through the booster pump 30, the water is recycled, the water resource is saved, the operation is simple, and the use is convenient.

Still including being used for carrying out the stoving mechanism 15 of drying with belt 2 after cleaning, stoving mechanism 15 passes through backup pad 16 and support 3 fixed connection, and stoving mechanism 15 is located the second and cleans the right side of mechanism 5, is convenient for dry belt 2, avoids adhesion such as buggy on belt 2.

Example 2:

As shown in fig. 4 and 5, the drying mechanism 15 includes an air heater 32 fixedly connected to the support plate 16, an air pipe 34 connected to an outlet of the air heater 32 through a sixth connecting pipe 33, a first air outlet mechanism communicated with the air pipe 34 and located directly above the air pipe 34, a second air outlet mechanism located on the left side of the first air outlet mechanism and communicated with the air pipe 34, and a third air outlet mechanism located on the right side of the first air outlet mechanism and communicated with the air pipe 34, wherein the length of the air pipe 34 in the front-back direction is equal to the width of the belt 2 in the front-back direction, so as to facilitate the overall drying of the belt 2, increase the drying area, and the second air outlet mechanism and the third air outlet mechanism are symmetrically arranged. The first air outlet mechanism comprises a plurality of first air outlet pipes 35 which are uniformly distributed along the front and back directions of the air pipes 34, the air outlets of the first air outlet pipes 35 are positioned right above, the air outlets of the first air outlet pipes 35 face the belt 2, the second air outlet mechanism comprises a plurality of second air outlet pipes 36 which are uniformly distributed along the front and back directions of the air pipes 34, the included angle between the air outlets of the second air outlet pipes 36 and the belt is 60 degrees, the third air outlet mechanism comprises a plurality of third air outlet pipes 37 which are uniformly distributed along the front and back directions of the air pipes 34, the included angle between the air outlets of the third air outlet pipes 37 and the belt 2 is 60 degrees, the first air outlet pipes 35, the second goes out tuber pipe 36 and third play tuber pipe 37 and all communicates with tuber pipe 34, and second goes out tuber pipe 36 and third play tuber pipe 37 symmetry setting, and the second goes out the contained angle between tuber pipe 36 and the third play tuber pipe 37 and is 120, has increased the stoving area to belt 2, has improved the drying efficiency to belt 2.

The utility model discloses first mechanism that cleans is located the below of cylinder, the belt is shrink inwards when avoiding appearing cleaning the belt, make first friction between mechanism and the belt less and can't make the phenomenon that the adhesion matter clean up, the second cleans the setting of mechanism, the belt after cleaning the mechanism to first cleans carries out the secondary and cleans, it is effectual to clean, collect the setting of mechanism, be convenient for collect the adhesion matter that the mechanism cleaned first, avoid the adhesion matter to fly away contaminated air in the air, clean the waste water that the mechanism flowed with the second simultaneously and carry out reuse, resources are saved, the setting of stoving mechanism, be convenient for clean the belt after the mechanism cleans the second and dry, keep the drying of belt.

Claims

1. The utility model provides a conveyer belt cleaning device of power plant which characterized in that: including the first mechanism that cleans that is located first cylinder below and with belt extrusion contact, the second that is located the right side of first mechanism that cleans and cleans the belt for the secondary cleans the mechanism, a collection mechanism for collecting the clearance stickers on the belt after first mechanism and the second of cleaning cleans the mechanism, the second cleans the mechanism and includes the trunk line of being connected with water source or collection mechanism, be connected with the trunk line and be located the belt below and clean the belt first water spray mechanism, be connected through first connecting pipe with the trunk line and clean the second water spray mechanism that the mechanism cleaned first.

2. The power plant conveyor belt sweeping device of claim 1, further comprising: first water spray mechanism includes and is connected and is located the first spray pipe of belt below, is located a plurality of first shower nozzles of first spray pipe upper surface with the trunk line, and a plurality of first shower nozzles are along the fore-and-aft direction evenly distributed of first spray pipe, and the length of the fore-and-aft direction of first spray pipe equals with the width of belt fore-and-aft direction.

3. The power plant conveyor belt sweeping device of claim 1, further comprising: the second water spray mechanism comprises a second water spray pipe which is connected with the main pipeline and is positioned on the right side of the first cleaning mechanism and a plurality of second spray heads which are positioned on the left side of the second water spray pipe, wherein the plurality of second spray heads are uniformly distributed along the front and back direction of the second water spray pipe, and the length of the front and back direction of the second water spray pipe is equal to the width of the front and back direction of the first cleaning mechanism.

4. The power plant conveyor belt sweeping device of claim 1, further comprising: the first cleaning mechanism comprises a cleaning barrel, a first connecting shaft and a driving mechanism, wherein the cleaning barrel is located below the first roller and is in extrusion contact with the belt, the first connecting shaft is located at the front end and the rear end of the cleaning barrel, and the driving mechanism is fixedly connected with the first connecting shaft and drives the cleaning barrel and the first roller to rotate synchronously.

5. The power plant conveyor belt cleaning device of claim 4, characterized in that: the driving mechanism comprises a first driving wheel sleeved on the first connecting shaft, a second driving wheel sleeved on the second connecting shaft of the first roller and a connecting belt connected with the first driving wheel and the second driving wheel, the first roller drives the second connecting shafts at the two ends of the first roller to rotate, the second connecting shafts drive the second driving wheel to rotate, and the second driving wheel drives the first driving wheel and the cleaning barrel to rotate through the connecting belt.

6. The power plant conveyor belt sweeping device of claim 1, further comprising: collect the mechanism including collecting the funnel, with collect the funnel bottom through the pipe chute of second connecting pipe intercommunication sediment the device, be located the suction pump at pipe chute sediment device's top, the delivery port of suction pump passes through the third connecting pipe and is connected with the trunk line, the water inlet of suction pump passes through the upper portion intercommunication of fourth connecting pipe and pipe chute sediment device.

7. The power plant conveyor belt sweeping device of claim 6, further comprising: and the third connecting pipe is provided with a valve and a booster pump for increasing water pressure, and the other end of the second connecting pipe is connected with a sewage inlet of the inclined pipe sedimentation device.

8. The power plant conveyor belt sweeping device of claim 1, further comprising: the belt cleaning device is characterized by further comprising a drying mechanism for drying the cleaned belt, the drying mechanism is fixedly connected with the support through the supporting plate, and the drying mechanism is located on the right side of the second cleaning mechanism.

9. The power plant conveyor belt sweeping device of claim 8, further comprising: the drying mechanism comprises an air heater fixedly connected with the supporting plate, an air pipe connected with an outlet of the air heater through a sixth connecting pipe, a first air outlet mechanism communicated with the air pipe and positioned right above the air pipe, a second air outlet mechanism positioned on the left side of the first air outlet mechanism and communicated with the air pipe, and a third air outlet mechanism positioned on the right side of the first air outlet mechanism and communicated with the air pipe, wherein the length of the air pipe in the front-back direction is equal to the width of the belt in the front-back direction, and the second air outlet mechanism and the third air outlet mechanism are symmetrically arranged.

10. The power plant conveyor belt sweeping device of claim 9, further comprising: first air-out mechanism includes a plurality of first play tuber pipes along tuber pipe fore-and-aft direction evenly distributed, and the air outlet of first play tuber pipe is located directly over, and second air-out mechanism includes a plurality of second play tuber pipes along tuber pipe fore-and-aft direction evenly distributed, and the air outlet that the second goes out the tuber pipe is 30~60 with the contained angle between the belt, and third air-out mechanism includes a plurality of third play tuber pipes along tuber pipe fore-and-aft direction evenly distributed, and the air outlet that the third goes out the tuber pipe is 30~60 with the contained angle between the belt.