CN220793162U - Ash conveying device at bottom of two channels of waste heat boiler - Google Patents

Abstract

The utility model discloses an ash conveying device at the bottom of a two-channel of a waste heat boiler, which relates to the technical field of boiler equipment and comprises an ash conveying machine body, wherein the ash conveying machine body comprises a plurality of ash conveying channels, all ash conveying channels are communicated with one ash depositing box, the ash depositing box is positioned below the ash conveying channels, a plurality of ash discharging pipes are arranged between the ash conveying channels and the ash depositing box, the ash discharging pipes are obliquely arranged from top to bottom along the ash conveying channels towards the ash depositing box, one end of each ash conveying pipe, which is far away from the ash depositing box, is provided with an ash falling pipe, the ash falling pipe is provided with an air blowing device, the air blowing device is fixedly provided with an air inlet pipe and a connecting pipe, the connecting pipe penetrates through the ash falling pipe and is fixedly connected with the ash falling pipe, one end, which is far away from the air blowing device, of the connecting pipe is fixedly connected with an air blowing pipe, and one end, which is far away from the connecting pipe, is directed towards the ash conveying channels. The utility model has the effect of convenience in ash discharge of the ash conveyer.

Description

Ash conveying device at bottom of two channels of waste heat boiler

Technical Field

The utility model relates to the technical field of boiler equipment, in particular to an ash conveying device at the bottom of a two-channel of a waste heat boiler.

Background

With the development of urban construction and the expansion of urban scale, the population quantity of cities is suddenly increased, the yield of household garbage is also rapidly increased, the environmental sanitation is affected, and the resources are wasted. The garbage disposal method widely used at present is incineration, and the volume of the household garbage can be greatly reduced by adopting the garbage incineration method, so that the service life of the existing garbage landfill site is prolonged.

Along with the wider and wider popularization of the garbage incineration technology, the generated garbage furnace ash is more and more, and the purpose of garbage treatment is harmless, recycling and reduction, so that the furnace ash generated by incineration needs to be subjected to subsequent collection treatment, and the accumulated ash at the bottom of a two-channel of the garbage incinerator is discharged in a long-shaft spiral ash conveyer mode at present.

Aiming at the related technology, after long-shaft spiral ash conveyer runs for a long time, screw shaft flange bolt fracture, screw blade fracture and jam or incapability of running due to falling and jam of coke blocks easily occur, so that normal ash discharge of the ash conveyer is affected, and the ash discharge is inconvenient.

Disclosure of utility model

In order to improve the ash discharge convenience of an ash conveyor, the application provides an ash conveying device at the bottom of a two-channel of a waste heat boiler.

The application provides an ash conveying device at the bottom of a two-channel of a waste heat boiler, which adopts the following technical scheme:

The utility model provides an exhaust-heat boiler two channel bottom ash handling equipment, includes the ash handling machine body, the ash handling machine body includes a plurality of ash handling channels, all ash handling channels intercommunication has same deposition case, deposition case is located ash handling channel below, be equipped with a plurality of ash pipes between ash handling channel and the deposition case, the direction of ash handling channel to deposition case is followed to the ash pipe, the top-down slope setting is all equipped with the sealing device who is used for sealing the ash pipe to the ash pipe, the one end that ash handling channel kept away from deposition case is equipped with the ash pipe, the ash pipe is equipped with air blowing device, air blowing device has set firmly intake pipe and connecting pipe, the connecting pipe wears to establish the ash pipe and with ash pipe fixed connection, air blowing device's one end fixedly connected with blast pipe is kept away from to the connecting pipe, the one end that the connecting pipe was kept away from to the connecting pipe is directional ash handling channel.

Through adopting above-mentioned technical scheme, the boiler ash that boiler burning produced gets into the ash conveying passageway along the ash falling pipe in, operates the blowing device operation for the blowing device inhales the air from the intake pipe, and after compressing and accelerating to the air, makes the air current get into the air blowing pipe along the connecting pipe, and drives the flow of boiler ash to the gas-supply passageway along the air blowing pipe, and the boiler ash falls into the ash deposition case along the ash discharging pipe after getting into the ash conveying passageway. The long shaft spiral ash conveyer is not needed to carry out during ash discharge, so that the probability of shutdown of the machine caused by faults is reduced, and the ash discharge convenience of the ash conveyer is improved.

Optionally, the intake pipe intercommunication has the rose box, and the air inlet has been seted up to the one end that the rose box kept away from the intake pipe, has seted up the cavity of intercommunication air inlet and intake pipe in the rose box, is equipped with multiunit filter in the cavity.

Through adopting above-mentioned technical scheme, when intake pipe advances, gaseous along the air inlet entering cavity to in the intake pipe is got into along the cavity, filters the air through the filter, and then improves compressed air's clean degree.

Optionally, an oil-water separator is arranged between the filter box and the air inlet pipe.

Through adopting above-mentioned technical scheme, carry out dewatering drying treatment through oil water separator to the air after filtering, reduce the moisture in the compressed air, and then reduce the probability that the water mixture in furnace dust and the air agglomerated.

Optionally, the ash discharge pipe is provided with a mounting cavity, the mounting cavity is rotationally connected with a sealing impeller, the sealing impeller is fixedly connected with a plurality of blades along the circumferential direction, the ash discharge pipe is fixedly connected with a motor I, and an output shaft of the motor I penetrates through the mounting shell and is coaxially fixed with the sealing impeller.

Through adopting above-mentioned technical scheme, the ashes get into the ash discharge pipe under the effect of air current to in the ash discharge pipe gets into the installation cavity, drive sealed impeller through the motor and rotate continually, make sealed impeller drive straight board and carry the ashes in the ash discharge pipe constantly, make the gas in the ash discharge pipe and the ashes keep steadily moving.

Optionally, ash pipe upper end is equipped with filter screen, filter screen is the rectangle, filter screen follows the equal fixedly connected with slider in both ends of length direction, ash pipe has been seted up with the spout of slider adaptation, slider sliding connection is in the spout, slider follows the equal fixedly connected with spring in both ends of length direction, the spring is located the spout, the one end and the ash pipe fixed connection of slider are kept away from to the spring, ash pipe installs motor two, motor two output shaft fixedly connected with rolling disc, a plurality of arc pieces of circumference fixedly connected with are followed to the rolling disc, the one end fixedly connected with pushing strip that the slider is close to motor two, ash pipe has been seted up and has been moved close to the mouth with pushing strip adaptation, pushing strip wears to establish the mouth of moving away to move away to and with the mouth inner wall sliding connection that moves away to, when the spring is in natural state, pushing strip and rolling disc butt.

Through adopting above-mentioned technical scheme, the furnace dust gets into behind the ash falling pipe with filter screen up end butt, the spout is spacing to the slider for the slider removes along spout length direction. Under the initial condition, promote strip and rolling disc butt under the effect of spring, control motor II drives the arc piece through the rolling disc and rotates, promotes the strip and moves along the mouth of stepping down when the arc piece rotates, drives filter screen and removes when promoting the strip and remove. At the moment, the spring close to the second motor is stretched, the spring far away from the second motor is compressed, when the rotating disc continues to rotate, the arc-shaped block is separated from the abutting strip, and the filter screen mesh is reset under the action of the spring, so that the filter screen mesh screens furnace dust.

Optionally, the ash dropping pipe rotates and is connected with the swivelling pipe, and the swivelling pipe is along circumference fixedly connected with ring gear, and the ring gear with the ring gear adaptation is seted up to the ash dropping pipe, and the ring gear rotates to be connected in the ring gear, and the ash dropping pipe fixedly connected with motor is three, and motor three output shaft fixedly connected with gear, the ash dropping pipe have been seted up and have been dodged the mouth with the gear adaptation, and the gear wears to establish dodge mouthful and ring gear meshing, swivel becket fixedly connected with bull stick, bull stick along circumference fixedly connected with a plurality of stirring leaf.

Through adopting above-mentioned technical scheme, the motor drives the ring gear initiative through the gear for the ring gear drives the rotation pipe rotation under the spacing effect of ring channel, and the stirring leaf is driven through the bull stick and is stirred the ashes when the rotation pipe rotates, when improving the ashes falling rate, and the stirring leaf is to the pure processing of carrying out of massive ashes.

Optionally, the inner wall of the ash falling pipe is fixedly connected with a plurality of grinding teeth matched with the stirring blade.

By adopting the technical scheme, the grinding teeth and the stirring blades are matched to grind the furnace dust, so that the crushing effect of the large furnace dust is improved.

Optionally, the intraductal rotation of ash falling is connected with the pole of beating, is equipped with the torsional spring between ash falling pipe and the pole of beating, and the torsional spring has the trend of promoting to beat pole and filter screen conflict, and end fixedly connected with butt pole under the bull stick, butt pole and the butt of beating pole upper end.

Through adopting above-mentioned technical scheme, when the bull stick rotates, drive the butt pole and rotate for the butt pole drives after contradicting with the rapping pole and beats the pole and rotate, makes and beats pole and filter screen separation, torsional spring compression this moment. After the abutting rod is separated from the knocking rod, the torsional spring drives the knocking rod to abut against the filter screen, so that the vibration effect of the filter screen is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The furnace ash generated by boiler combustion enters the ash conveying channel along the ash dropping pipe, the blowing device is operated to suck air from the air inlet pipe, after the air is compressed and accelerated, the air flow enters the air blowing pipe along the connecting pipe, the furnace ash is driven to flow to the ash conveying channel along the air blowing pipe, and the furnace ash falls into the ash accumulating box along the ash discharging pipe after entering the ash conveying channel. The long shaft spiral ash conveyer is not needed for ash discharge, so that the problem of shutdown caused by failure of the machine is solved;

2. When the air inlet pipe is used for air inlet, air enters the cavity along the air inlet and enters the air inlet pipe along the cavity, and air is filtered through the filter plate, so that the cleanliness of compressed air is improved;

3. The filtered air is dehydrated and dried through the oil-water separator, so that the moisture in the compressed air is reduced, and the probability of mixing and caking of furnace dust and the moisture in the air is further reduced.

Drawings

FIG. 1 is a schematic diagram of the whole structure of an ash conveying device at the bottom of a two-channel of a waste heat boiler.

Fig. 2 is a schematic view intended to highlight the internal structure of the drop tube.

Fig. 3 is a schematic view intended to highlight the structure of the filter screen.

Fig. 4 is an enlarged schematic view of the portion a in fig. 1.

Fig. 5 is a schematic view intended to highlight the internal structure of the drop tube.

Fig. 6 is a schematic view of the internal structure of the filter box.

Reference numerals illustrate: 1. an ash conveying channel; 2. an ash accumulation box; 3. an ash falling pipe; 31. a filter screen; 311. a slide block; 312. a spring; 313. pushing the strip; 32. a chute; 321. a yielding port; 33. a second motor; 331. a rotating disc; 332. an arc-shaped block; 34. a rotary tube; 341. a toothed ring; 342. a rotating rod; 343. stirring the leaves; 344. a butt joint rod; 35. grinding the teeth; 36. an annular groove; 37. a third motor; 371. a gear; 38. knocking the rod; 381. a torsion spring; 4. an ash discharge pipe; 41. sealing the impeller; 42. a first motor; 43. a straight plate; 5. an air blowing device; 51. an air inlet pipe; 52. a connecting pipe; 521. an air blowing pipe; 53. a filter box; 531. an air inlet; 532. a cavity; 533. a filter plate; 54. an oil-water separator.

Detailed Description

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

The embodiment of the application discloses an ash conveying device at the bottom of a two-channel of a waste heat boiler.

Examples

Referring to fig. 1 and 2, the ash conveying device at the bottom of the two channels of the waste heat boiler comprises an ash conveying machine body, the ash conveying machine body comprises two ash conveying channels 1, one ends of the ash conveying channels 1 are communicated with an ash falling pipe 3, ash falling after incineration moves to the ash conveying channels 1 along the ash falling pipe 3, a filter screen 31 is arranged in the ash falling pipe 3, the filter screen 31 is horizontally arranged, and ash falling falls onto the filter screen 31 along the ash falling pipe 3.

Referring to fig. 1 and 2, the filter screen 31 is rectangular, and the ash falling pipe 3 is provided with a cavity adapted to the filter screen 31, two ends of the filter screen 31 along the length direction are fixedly connected with sliding blocks 311, and the two sliding blocks 311 are parallel to each other. The ash falling pipe 3 is provided with a sliding groove 32 matched with the sliding block 311, the sliding block 311 is connected in the sliding groove 32 in a sliding way, and the sliding groove 32 limits the sliding block 311, so that the vibrating screen plate moves along the length direction of the sliding groove 32.

Referring to fig. 2 and 3, the length of the chute 32 is longer than that of the slider 311, and springs 312 are fixedly connected to both ends of the slider 311 in the length direction, and the springs 312 and the slider 311 are positioned in the same straight line. One end of the spring 312 far away from the sliding block 311 is fixedly connected with the ash dropping pipe 3, and when the springs 312 at the two ends of the sliding block 311 are all in a natural state, the filter screen 31 is positioned in the middle position of the ash dropping pipe 3. The second motor 33 is arranged on the outer side of the ash falling pipe 3, the second motor 33 is positioned at one end of the sliding block 311 along the length direction, the rotating disc 331 is coaxially fixed on the output shaft of the second motor 33, and an operator manipulates the second motor 33 to drive the rotating disc 331 to rotate.

Referring to fig. 2 and 4, a plurality of arc-shaped blocks 332 are uniformly arranged along the circumferential direction of the rotating disc 331, the arc-shaped blocks 332 are driven to rotate when the rotating disc 331 rotates, a pushing bar 313 is fixedly connected to one end of the sliding block 311, which is close to the second motor 33, and the filtering screen 31 is driven to move by the plurality of sliding blocks 311 when the pushing bar 313 moves. The ash dropping pipe 3 is provided with a yielding port 321 which is matched with the pushing strip 313, and the pushing strip 313 is penetrated through the yielding port 321 and is abutted with the rotating disc 331. When the rotating disc 331 rotates, the arc-shaped block 332 is driven to abut against the pushing bar 313, so as to push the pushing bar 313 to move along the yielding port 321.

Referring to fig. 2 and 3, when the pushing bar 313 moves, the filter screen 31 is driven to move, so that the springs 312 at two ends of the slider 311 are deformed, and at this time, the springs 312 close to the pushing bar 313 are in a stretched state, and the springs 312 far from the pushing bar 313 are in a compressed state. When the rotating disc 331 rotates, the pushing bar 313 is separated from the arc-shaped block 332, and the spring 312 drives the sliding block 311 to reset. The rotating disc 331 continuously rotates, and then drives the filter screen 31 to continuously vibrate, so that the filter screen 31 screens the furnace dust, the large furnace dust stays on the upper end surface of the filter screen 31, and the fine furnace dust continuously falls through the filter screen 31.

Referring to fig. 2 and 3, the upper end of the ash falling pipe 3 is rotatably connected with a rotating pipe 34, the rotating pipe 34 is positioned at the upper end of the screen, a toothed ring 341 is coaxially fixed at the outer side of the rotating pipe 34, and the toothed ring 341 comprises a plurality of toothed blocks circumferentially arrayed along the rotating pipe 34. A third motor 37 is arranged on the outer side of the ash falling pipe 3, a gear 371 is coaxially fixed on the output shaft of the third motor 37, and an operator manipulates the third motor 37 to drive the gear 371 to rotate. The ash falling pipe 3 is provided with an avoidance port, the gear 371 penetrates through the avoidance port to be meshed with the tooth block, and the gear 371 drives the rotary pipe 34 to rotate through the meshing effect with the tooth block when rotating.

Referring to fig. 2 and 3, the rotating pipe 34 is coaxially fixed with a rotating rod 342, the rotating rod 342 extends in a direction approaching the filter screen 31, and the rotating pipe 34 rotates to rotate the rotating rod 342 around the axis. The bull stick 342 is along a plurality of stirring leaf 343 of evenly setting of circumference fixedly connected with, drives stirring leaf 343 rotation when bull stick 342 rotates, and then stirs the crushing to the big piece furnace dust on the filter screen 31 through stirring leaf 343, improves the efficiency that the furnace dust falls simultaneously. A plurality of grinding teeth 35 are fixed in the ash falling pipe 3, the grinding teeth 35 and the stirring blades 343 are arranged in a staggered mode, and the grinding teeth 35 and the stirring blades 343 are matched, so that the crushing effect of furnace ash is improved.

Referring to fig. 2 and 3, two knocking rods 38 are arranged in the ash falling pipe 3, a rotating column is fixedly connected to the inner wall of the ash falling pipe 3, the knocking rods 38 are arranged in a penetrating mode through the rotating column and are rotationally connected with the knocking rods 38, torsion springs 381 are installed between the knocking rods 38 and the ash falling pipe 3, one ends of the torsion springs 381 are fixedly connected with the ash falling pipe 3, and the other ends of the torsion springs 381 are fixedly connected with the knocking rods 38. The torsion spring 381 is in a compressed state and has a tendency to drive the lower end of the striking rod 38 to collide with the filter screen 31.

Referring to fig. 2 and 3, a supporting rod 344 is vertically fixed at the lower end of the rotating rod 342, the rotating rod 342 drives the supporting rod 344 to rotate when rotating, and the supporting rod 344 is in contact with the upper end of the knocking rod 38 when rotating, so as to push the knocking rod 38 to rotate, at this time, the lower end of the knocking rod 38 is separated from the filter screen 31, and at this time, the torsion spring 381 is compressed. After the abutting rod 344 is separated from the knocking rod 38, the torsion spring 381 drives the knocking rod 38 to collide with the filter screen 31, so that the filter screen 31 vibrates, and the screening effect on furnace dust is improved.

Referring to fig. 1 and 5, one end of two ash conveying channels 1, which are close to each other, is connected with the same ash accumulation box 2, an ash discharge pipe 4 is arranged between the ash conveying channels 1 and the ash accumulation box 2, and the ash discharge pipe 4 is obliquely arranged from top to bottom from the ash conveying channels 1 to the ash accumulation box 2. The ash falling pipe 3 is provided with an air blowing device 5, one end of the air blowing device 5 is fixed with a connecting pipe 52, and the other end is fixed with an air inlet pipe 51. The operator manipulates the blowing device 5 to operate such that the blowing device 5 absorbs external air through the air suction pipe and compresses the air such that the compressed air flows along the connection pipe 52.

Referring to fig. 1 and 2, the connection pipe 52 is penetrated through the ash falling pipe 3 and is positioned in the ash falling pipe 3, the blowing pipe 521 is installed at one end of the connection pipe 52, which is far from the blowing device 5, the blowing pipe 521 is vertically disposed, and the air flow enters the blowing pipe 521 along the connection pipe 52. The blow pipe 521 is directed to the gas transmission passage, and the gas flow is mixed with the furnace ash after being discharged from the blow pipe 521, enters the ash transmission passage 1 along the ash falling pipe 3, and flows along the ash transmission passage 1 toward the ash discharge pipe 4.

Referring to fig. 1 and 5, the furnace dust enters the dust discharging pipe 4 under the driving of the air flow, the dust discharging pipe 4 is provided with a mounting cavity, a sealing impeller 41 is arranged in the mounting cavity, the sealing impeller 41 is vertically arranged with the dust discharging pipe 4, and the sealing impeller 41 is rotationally connected with the dust discharging pipe 4. The sealing impeller 41 is fixedly connected with two groups of straight plates 43 along the circumferential direction, the two groups of straight plates 43 are vertically arranged, the number of the straight plates 43 in one group of straight plates 43 is two, and the two straight plates 43 positioned in the same group are positioned in the same plane.

Referring to fig. 1 and 5, the furnace dust falls onto the straight plate 43 along the dust discharging pipe 4, a first motor 42 is installed on the outer side of the dust discharging pipe 4, an output shaft of the first motor 42 penetrates through the dust discharging pipe 4 and is coaxially fixed with the sealing impeller 41, and an operator manipulates the first motor 42 to drive the sealing impeller 41 to rotate, so that the sealing impeller 41 drives the straight plate 43 to rotate. When the straight plate 43 rotates, the furnace ash is driven to continuously fall, the motor I42 continuously runs, and then the straight plate 43 continuously runs, so that the gas and the furnace ash in the ash discharge pipe 4 continuously flow. The furnace ash falls into the ash accumulation box 2 along the ash discharge pipe 4, and the long-shaft spiral ash conveyer is not needed to carry out ash discharge, so that the probability of shutdown of the ash conveyer due to failure is reduced, and the ash discharge convenience of the ash conveyer is improved.

Referring to fig. 1 and 6, a filter box 53 is provided at one end of the air inlet pipe 51 far from the air blowing device 5, a cavity 532 is provided in the filter box 53, the air inlet pipe 51 is communicated with the cavity 532, an air inlet 531 is provided at one end of the filter box 53 far from the air inlet pipe 51 and communicated with the cavity 532, and when the air inlet pipe 51 sucks air, external air enters the cavity 532 along the air inlet 531 and flows to the air inlet pipe 51 along the cavity 532. A plurality of groups of filter plates 533 are arranged in the cavity 532, and the filter plates 533 filter the flowing gas, so that impurities in the gas entering the ash dropping pipe 3 are reduced.

Referring to fig. 1 and 6, an oil-water separator 54 is installed between the filter box 53 and the air inlet pipe 51, the oil-water separator 54 is beneficial to reducing the content of moisture in the air, and the air is filtered through the oil-water separator 54 when flowing along the air inlet pipe 51, so that the probability of blocking the ash discharge pipe 4 due to agglomeration of the ash caused by mixing the moisture in the air with the ash is reduced, and the convenience in ash discharge is improved.

The implementation principle of the ash conveying device at the bottom of the two channels of the waste heat boiler provided by the embodiment of the application is as follows: the furnace dust is conveyed into the dust falling pipe 3, falls onto the filter screen 31 under the action of gravity, and drives the filter screen 31 to vibrate through the second motor 33, so that the furnace dust is screened. The third control motor 37 drives the gear 371 to rotate, so that the gear 371 drives the rotary tube 34 to rotate through the meshing action with the toothed ring 341, and the rotary tube 34 drives the stirring blade 343 to rotate through the rotary rod 342 when rotating, so that the stirring blade 343 is matched with the grinding teeth 35 to crush the massive furnace dust. The air blowing device 5 sucks air filtered by the filter box 53 and the oil-water separator 54 from the air inlet pipe 51, compresses the air, and the compressed air enters the air blowing pipe 521 along the connecting pipe 52, and the air blowing pipe 521 drives the furnace dust in the dust falling pipe 3 to flow to the gas transmission pipeline after being sprayed out, so that the furnace dust enters the dust accumulating box 2 along the dust discharging pipe 4. When ash is discharged, the long-shaft spiral ash conveyer is not needed to convey the furnace ash in the ash conveying channel 1, so that the probability of shutdown caused by damage of the long-shaft spiral shaft is reduced, and the convenience of the ash conveyer in conveying the furnace ash is improved.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. Waste heat boiler two channel bottom ash conveying device, including ash conveyor body, its characterized in that: the ash conveyer body comprises a plurality of ash conveying channels (1), all ash conveying channels (1) are communicated with one ash depositing box (2), the ash depositing box (2) is located below the ash conveying channels (1), a plurality of ash discharging pipes (4) are arranged between the ash conveying channels (1) and the ash depositing box (2), the ash discharging pipes (4) are obliquely arranged from top to bottom along the direction of the ash conveying channels (1) towards the ash depositing box (2), one ends of the ash conveying channels, away from the ash depositing box (2), of the ash conveying channels are provided with ash falling pipes (3), the ash falling pipes (3) are provided with air blowing devices (5), the air blowing devices (5) are fixedly provided with air inlet pipes (51) and connecting pipes (52), the connecting pipes (52) penetrate through the ash falling pipes (3) and are fixedly connected with the ash falling pipes (3), one ends of the connecting pipes (52) away from the air blowing pipes (521), and one ends of the air outlet pipes away from the connecting pipes (52) are pointed to the ash conveying channels (1).

2. The ash conveying device at the bottom of a two-channel of a waste heat boiler according to claim 1, wherein: the air inlet pipe (51) is communicated with the filter box (53), an air inlet (531) is formed in one end, far away from the air inlet pipe (51), of the filter box (53), a cavity (532) communicated with the air inlet (531) and the air inlet pipe (51) is formed in the filter box (53), and a plurality of groups of filter plates (533) are arranged in the cavity (532).

3. The ash conveying device at the bottom of the two channels of the waste heat boiler according to claim 2, wherein: an oil-water separator (54) is arranged between the filter box (53) and the air inlet pipe (51).

4. The ash conveying device at the bottom of a two-channel of a waste heat boiler according to claim 1, wherein: the ash discharge pipe (4) is provided with a mounting cavity, a sealing impeller (41) is rotationally connected in the mounting cavity, a plurality of blades are fixedly connected to the sealing impeller (41) along the circumferential direction, the ash discharge pipe (4) is fixedly connected with a motor I (42), and an output shaft of the motor I (42) penetrates through the mounting shell and is coaxially fixed with the sealing impeller (41).

5. The ash conveying device at the bottom of a two-channel of a waste heat boiler according to claim 1, wherein: the utility model provides a dust fall pipe (3) upper end is equipped with filter screen (31), filter screen (31) are the rectangle, filter screen (31) are along equal fixedly connected with slider (311) in both ends of length direction, dust fall pipe (3) set up spout (32) with slider (311) adaptation, slider (311) sliding connection is in spout (32), slider (311) are along equal fixedly connected with spring (312) in both ends of length direction, spring (312) are located spout (32), one end and dust fall pipe (3) fixed connection of slider (311) are kept away from to spring (312), motor two (33) are installed to dust fall pipe (3), motor two (33) output shaft fixedly connected with rolling disc (331), rolling disc (331) are along circumference fixedly connected with a plurality of arc pieces (332), one end fixedly connected with pushing strip (313) that slider (311) are close to motor two (33), place the mouth (321) that gives way with pushing strip (313) adaptation is seted up in dust fall pipe (3), place to put away mouth (313) and be in place to mouth (321) and with pushing inner wall (321), when rolling disc (331) are in nature state, rolling disc (331).

6. The ash conveying device at the bottom of the two channels of the waste heat boiler according to claim 5, wherein: the ash dropping pipe (3) is rotationally connected with a rotating pipe (34), the rotating pipe (34) is fixedly connected with a toothed ring (341) along the circumferential direction, an annular groove (36) matched with the toothed ring (341) is formed in the ash dropping pipe (3), the toothed ring (341) is rotationally connected in the annular groove (36), the ash dropping pipe (3) is fixedly connected with a motor III (37), an output shaft of the motor III (37) is fixedly connected with a gear (371), an avoidance opening matched with the gear (371) is formed in the ash dropping pipe (3), the gear (371) is penetrated and meshed with the toothed ring (341), the rotating ring is fixedly connected with a rotating rod (342), and the rotating rod (342) is fixedly connected with a plurality of stirring blades (343) along the circumferential direction.

7. The ash conveying device at the bottom of the two channels of the waste heat boiler according to claim 6, wherein: the inner wall of the ash falling pipe (3) is fixedly connected with a plurality of grinding teeth (35) which are matched with the stirring blades (343).

8. The ash conveying device at the bottom of the two channels of the waste heat boiler according to claim 6, wherein: the ash falling pipe (3) is rotationally connected with a knocking rod (38), a torsion spring (381) is arranged between the ash falling pipe (3) and the knocking rod (38), the torsion spring (381) has a trend of pushing the knocking rod (38) to collide with the filter screen (31), the lower end part of the rotating rod (342) is fixedly connected with a supporting rod (344), and the supporting rod (344) is in supporting connection with the upper end part of the knocking rod (38).