阅读说明：本技术 一种垃圾焚烧烟气预处理装置 (Waste incineration flue gas preprocessing device ) 是由 郦赛忠 吕杭杰 于 2020-12-14 设计创作，主要内容包括：本发明涉及空气净化技术领域,更具体地说,是一种垃圾焚烧烟气预处理装置,包括焚烧炉、烟气处理管以及净化箱,所述净化箱和焚烧炉之间通过烟气处理管连接,所述烟气处理管靠近焚烧炉的一侧内设有除尘袋,所述烟气处理管内设有分批次机构,所述分批次机构包括两个一号滑块、两个二号滑块以及多个密封板,所述烟气处理管内设有滑槽,所述一号滑块和二号滑块均滑动安装在滑槽内；本发明通过设置分批次机构、冷凝机构以及净化机构,有效的实现分批次进行处理焚烧过程中产生的烟气,同时还实现了水资源的回收,有效的保护了环境。(The invention relates to the technical field of air purification, in particular to a garbage incineration flue gas pretreatment device which comprises an incinerator, a flue gas treatment pipe and a purification box, wherein the purification box is connected with the incinerator through the flue gas treatment pipe; according to the invention, the batch-dividing mechanism, the condensing mechanism and the purifying mechanism are arranged, so that the smoke generated in the incineration process can be effectively treated in batches, meanwhile, the recovery of water resources is realized, and the environment is effectively protected.)

1. The utility model provides a waste incineration flue gas preprocessing device, includes burns burning furnace (1), flue gas treatment pipe (2) and purifying box (3), its characterized in that, purifying box (3) and burn between burning furnace (1) and handle pipe (2) through the flue gas and connect, flue gas treatment pipe (2) are close to and are equipped with dust bag (5) in the one side of burning furnace (1), the flue gas is handled and is equipped with batch mechanism in pipe (2), batch mechanism includes two sliders (8), two No. two sliders (9) and a plurality of closing plate (10), be equipped with spout (7) in flue gas treatment pipe (2), slider (8) and No. two sliders (9) equal slidable mounting is in spout (7), it is articulated through closing plate (10) between slider (8) and the adjacent No. two sliders (9), be formed with sealed smoke chamber between closing plate (10), a conical opening is arranged in the smoke processing pipe (2), a smoke inlet (11) is arranged in the first sliding block (8) at one side, the smoke inlet (11) is connected with the conical opening through an organ pipe (6), a first hinge door (12) is hinged in the smoke inlet (11), a butting part for limiting the unidirectional rotation of the first hinged door (12) is also arranged in the smoke inlet (11), a smoke outlet (13) is arranged in the first sliding block (8) on the other side, a blocking plate (14) is arranged in the smoke outlet (13) in a sliding manner, an electric telescopic rod (15) used for driving the blocking plate (14) is further arranged on one side of the smoke outlet (13), the second sliding block (9) is connected through a tension spring (16), and a conducting rod (17) is fixedly installed on the sliding block (9), and a group of electromagnets (4) which are electrified and repulsed are arranged between the opposite surfaces of the second sliding block (9) and the flue gas treatment pipe (2).

2. The waste incineration flue gas pretreatment device according to claim 1, wherein the flue gas treatment pipe (2) is U-shaped, the chute (7) is cross-shaped, a torsion spring is arranged at the hinged position of the first hinged door (12), the conductive rod (17) is L-shaped, and the conductive rod (17) is arranged in a staggered manner relative to the chute (7).

3. The pretreatment device for flue gas generated by incineration of refuse according to claim 1, wherein a condensing mechanism is further disposed in the flue gas treatment pipe (2).

4. The waste incineration flue gas pretreatment device according to claim 3, wherein the condensing mechanism comprises a sliding plate (18) slidably mounted in the flue gas treatment pipe (2), a water collecting ring (20) fixedly mounted in the flue gas treatment pipe (2), and a plurality of condensing plates (23) fixedly mounted on the water collecting ring (20) at equal intervals, the sliding plate (18) and the flue gas treatment pipe (2) are elastically connected, through holes are symmetrically formed in the sliding plate (18), second hinged doors (19) are hinged in the through holes, interference portions for limiting the one-way rotation of the second hinged doors (19) are also arranged in the through holes, ejection portions are arranged on a moving path of the second hinged doors (19) in the flue gas treatment pipe (2), and a water tank (21) is arranged in the water collecting ring (20).

5. The pretreatment device for the flue gas generated by the incineration of the garbage according to claim 4, wherein a sealing plug (27) which is in sliding fit with the water collecting ring (20) is arranged on one side of the water tank (21), a first gear (26) is fixedly arranged on the sealing plug (27), a rack (25) which is meshed with the first gear (26) is fixedly arranged in the flue gas treatment pipe (2), a push rod (24) is fixedly arranged on the gear (26), and one end of the push rod (24) is fixedly connected with the sliding plate (18).

6. The pretreatment device for flue gas generated by incineration of garbage according to claim 5, wherein a torsion spring is arranged at the hinged position of the second hinged door (19), the condensation plate (23) is obliquely arranged relative to the water collecting ring (20), and a water tank (28) communicated with the water tank (21) through a connecting pipe is fixedly arranged on the flue gas treatment pipe (2).

7. The pretreatment device for flue gas generated by incineration of refuse according to claim 1, wherein the purification box (3) is filled with aqueous solution, and a flue gas purification device is arranged in the purification box (3).

8. The waste incineration flue gas pretreatment device according to claim 7, wherein the flue gas purification device comprises a sewage discharge plate (29), the sewage discharge plate (29) is slidably mounted in the purification box (3), a threaded rod (30) is symmetrically and rotatably mounted in the purification box (3), the threaded rod (30) penetrates through the sewage discharge plate (29) and is in threaded fit with the sewage discharge plate (29), a stand column penetrating through the sewage discharge plate (29) is arranged in the purification box (3), a clamping rod (33) is rotatably mounted in the stand column, a third gear (32) is coaxially and fixedly mounted on the clamping rod (33), a second gear (31) meshed with the third gear (32) is fixedly mounted at one end of the threaded rod (30), a floating block (35) is slidably sleeved on the outer wall of the stand column, a driven block (34) is sleeved on the clamping rod (33) at the same horizontal height as the floating block (35), slip card is established between driven piece (34) and driven piece (34), all be equipped with magnet (38) between floating block (35) and driven piece (34), attract each other between magnet (38), the shaping of stand outer wall has helicla flute (36), the crisscross slip of both sides of floating block (35) inlays and is equipped with ball (37), ball (37) cooperate with helicla flute (36).

Technical Field

The invention relates to the technical field of air purification, in particular to a pretreatment device for waste incineration flue gas.

Background

At present, domestic garbage treatment methods are numerous at home and abroad, and an incineration treatment method is a method which is commonly used. The source of the domestic garbage incineration plant garbage mainly comprises waste generated in daily life of urban residents, garbage collected by urban environmental sanitation cleaning departments and rural garbage. The content of soil in the household garbage is relatively high, and the soil in some cities even reaches forty percent.

When the existing incineration flue gas treatment device is used for treating flue gas, all purification equipment is always in operation, and although the treatment power is used for incinerating tail gas, a lot of other energy is consumed, so that the flue gas needs to be treated in batches in the treatment process, and the purification equipment has buffering time.

Disclosure of Invention

The invention aims to provide a pretreatment device for waste incineration flue gas, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a waste incineration flue gas pretreatment device comprises an incinerator, a flue gas treatment pipe and a purification box, wherein the purification box is connected with the incinerator through the flue gas treatment pipe, one side, close to the incinerator, of the flue gas treatment pipe is internally provided with a dust removal bag, a batch mechanism is arranged in the flue gas treatment pipe, the batch mechanism comprises two first sliding blocks, two second sliding blocks and a plurality of sealing plates, a sliding groove is arranged in the flue gas treatment pipe, the first sliding blocks and the second sliding blocks are all slidably mounted in the sliding groove, the first sliding blocks are hinged with the adjacent second sliding blocks through the sealing plates, a sealed smoke cavity is formed between the sealing plates, a conical opening is arranged in the flue gas treatment pipe, one side of the first sliding blocks is internally provided with a smoke inlet, the smoke inlet is connected with the conical opening through an organ pipe, a first hinged door is hinged in the smoke inlet, and a collision part for limiting the unidirectional rotation of the first hinged door is further arranged in the smoke inlet, the opposite side be equipped with the outlet flue in the slider, slidable mounting has the shutoff board in the outlet flue, one side of outlet flue still is equipped with the electric telescopic handle who is used for driving the shutoff board, connect through the extension spring between No. two sliders, just fixed mounting has the conducting rod on the slider, No. two sliders and flue gas are handled and are equipped with a set of circular telegram repellent's electro-magnet between the opposite face of pipe.

Further: the flue gas treatment pipe is U-shaped, the spout is the cross, the articulated department of first hinge door is equipped with the torsional spring, the conducting rod is L shape, the crisscross arrangement of the relative spout of conducting rod.

Further: and a condensing mechanism is also arranged in the flue gas treatment pipe.

Further: condensation mechanism includes that slidable mounting handles intraductal slide, fixed mounting and handles intraductal water collection ring and a plurality of equidistance fixed mounting and gather the condensing plate on the ring at the flue gas at flue gas, slide and flue gas are handled between the pipe elastic connection, the symmetry on the slide is equipped with the through-hole, it has the second hinge door to articulate in the through-hole, also be equipped with in the through-hole and be used for restricting the one-way pivoted conflict portion of second hinge door, be equipped with ejecting portion on the removal route that lies in the second hinge door in the flue gas is handled intraductal, it is equipped with the basin in the ring.

And further: one side of the water tank is provided with a sealing plug in sliding fit with the water collecting ring, a first gear is fixedly mounted on the sealing plug, a rack meshed with the first gear is fixedly mounted in the flue gas treatment pipe, a push rod is fixedly mounted on the gear, and one end of the push rod is fixedly connected with the sliding plate.

And further: the hinge joint of the second hinge door is provided with a torsion spring, the condensing plate is obliquely arranged relative to the water collecting ring, and the flue gas treatment pipe is fixedly provided with a water tank communicated with the water tank through a connecting pipe.

And further: the water solution is injected into the purifying box, and a flue gas purifying device is arranged in the purifying box.

And further: the flue gas purification device comprises a sewage draining plate which is arranged in a purification box in a sliding way, threaded rods are symmetrically and rotatably arranged in the purification box, the threaded rod penetrates through the sewage draining plate and is in threaded fit with the sewage draining plate, the purifying box is internally provided with an upright post penetrating through the sewage draining plate, a clamping rod is rotatably arranged in the upright post, a third gear is coaxially and fixedly arranged on the clamping rod, a second gear meshed with the third gear is fixedly arranged at one end of the threaded rod, the outer wall of the upright post is sleeved with a floating block in a sliding way, a driven block is sleeved on the clamping rod at the same horizontal height of the floating block, the driven block and the driven block are slidably clamped, magnets are arranged between the floating block and the driven block, the magnets attract each other, a spiral groove is formed in the outer wall of the upright column, balls are embedded in the two sides of the floating block in a sliding mode in a staggered mode, and the balls are matched with the spiral groove.

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

1. the invention is provided with an electromagnet, a dust pocket, an organ pipe, a chute, a first slide block, a second slide block, a sealing plate, a smoke inlet, a first hinge door, a smoke outlet, a blocking plate, an electric telescopic rod, a tension spring and a conductive rod, wherein smoke in an incinerator is firstly subjected to primary filtering work through the dust pocket in the smoke treatment pipe, and the smoke is stored in a smoke cavity through the smoke inlet for a short time, in the process, the first slide block and the second slide block both move along the chute in opposite directions, when the second slide block moves to a certain distance, the conductive rods are contacted with each other, so that the electromagnet is triggered to be electrified and mutually repelled, the electric telescopic rod is contracted to drive the blocking plate to move, thereby the smoke outlet is opened, and the smoke in the smoke cavity is injected into the smoke treatment pipe through the smoke outlet in batches for further treatment work, thereby further purification work equipment has intermittent time, the shortening of the service life of the equipment caused by long-time continuous work is avoided.

2. The invention is provided with a sliding plate, a second hinged door, a water collecting ring, a water tank, a water leakage hole, a condensing plate, an ejector rod, a rack, a first gear, a sealing plug and a water tank, when a single batch of flue gas moves in a flue gas treatment pipe, the sliding plate slides under the action of interference between the flue gas and the sliding plate, under the action of meshing between the gear and the rack, the sliding plate drives the sealing plug to move and seal the water leakage hole, meanwhile, the interference between an ejector part and the second hinged door is generated, so that a through hole is opened, the flue gas passes through the water collecting ring, in the process, condensation between the steam mixed in the flue gas and the condensing plate is generated, the steam is converted into water drops to fall on the water tank, after the single batch of flue gas condensation work is finished, the sliding plate and the sealing plug reset under the action of elastic restoring force, and the water in the water tank flows into the water tank through, and the condensation work is finished, so that the effect of water resource recovery is realized.

3. The invention is provided with a sewage discharge plate, a threaded rod, a second gear, a third gear, a clamping rod, a driven block, a floating block, a spiral groove, a ball and a magnet, wherein flue gas is blown into a purifying box through a flue gas treatment pipe, so that residual fine particles of the flue gas fall onto the sewage discharge plate at the bottom of the water, when water in the purifying box is discharged, the floating block loses buoyancy, and slides downwards along an upright post under the action of the gravity, and rotates in the downward sliding process under the matching between the ball and the spiral groove, and drives the driven block to synchronously rotate under the action of the magnet, so as to drive the clamping rod and the third gear at one end of the clamping rod to rotate, so that the second gear and the threaded rod are driven to rotate under the meshing action between the second gear and the third gear, and further drives the sewage discharge plate to upwards move under the matching action of the thread, thereby driving sundries to upwards, the manual later cleaning work is avoided.

Drawings

FIG. 1 is a schematic structural view of a waste incineration flue gas pretreatment device;

FIG. 2 is an enlarged partial structural schematic view of a position A in the pretreatment device for waste incineration flue gas;

FIG. 3 is an enlarged partial structural schematic view of a portion B in the pretreatment device for waste incineration flue gas;

FIG. 4 is an enlarged partial structural schematic view of a place C in the waste incineration flue gas pretreatment device;

FIG. 5 is an assembly drawing of a first gear and a seal plug in the waste incineration flue gas pretreatment device.

The reference numerals in the schematic drawings illustrate:

1-incinerator, 2-flue gas treatment pipe, 3-purification box, 4-electromagnet, 5-dust removal bag, 6-organ pipe, 7-chute, 8-first slide block, 9-second slide block, 10-sealing plate, 11-smoke inlet, 12-first hinged door, 13-smoke outlet, 14-blocking plate, 15-electric telescopic rod, 16-tension spring, 17-conducting rod, 18-sliding plate, 19-second hinged door, 20-water collecting ring, 21-water tank, 22-water leakage hole, 23-condensing plate, 24-ejector rod, 25-rack, 26-first gear, 27-blocking, 28-water tank, 29-sewage discharging plate, 30-threaded rod, 31-second gear, 32-third gear, 33-clamping rod, 34-driven block, 35-floating block, 36-spiral groove, 37-ball and 38-magnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention, and the present invention is further described with reference to the embodiments below.

Referring to fig. 1 and 2, in an embodiment of the present invention, a waste incineration flue gas pretreatment device includes an incinerator 1, a flue gas treatment pipe 2, and a purification box 3, the purification box 3 and the incinerator 1 are connected through the flue gas treatment pipe 2, the flue gas treatment pipe 2 is U-shaped, a dust removal bag 5 is disposed in one side of the flue gas treatment pipe 2 close to the incinerator 1, a batch mechanism is disposed in the flue gas treatment pipe 2 for batch treatment of flue gas, the batch mechanism includes two first sliders 8, two second sliders 9, and a plurality of sealing plates 10, a sliding chute 7 is disposed in the flue gas treatment pipe 2, the sliding chute 7 is cross-shaped, the first slider 8 and the second slider 9 are both slidably mounted in the sliding chute 7, the first slider 8 is hinged to the adjacent second slider 9 through the sealing plate 10, a sealed flue cavity is formed between the sealing plates 10, a conical opening is arranged in the smoke processing pipe 2, a smoke inlet 11 is arranged in the first sliding block 8 at one side, the smoke inlet 11 is connected with the conical opening through an organ pipe 6, a first hinged door 12 is hinged in the smoke inlet 11, a torsion spring is arranged at the hinged position of the first hinged door 12, a collision part used for limiting the unidirectional rotation of the first hinged door 12 is also arranged in the smoke inlet 11, a smoke outlet 13 is arranged in the first sliding block 8 at the other side, a blocking plate 14 is arranged in the smoke outlet 13 in a sliding manner, an electric telescopic rod 15 for driving the blocking plate 14 is further arranged on one side of the smoke outlet 13, the second sliding block 9 is connected through a tension spring 16, and a conducting rod 17 is fixedly arranged on the sliding block 9, the conducting rod 17 is L-shaped, the conducting rods 17 are distributed in a staggered mode relative to the sliding grooves 7, and a group of electromagnets 4 which are electrified and repelled are arranged between the second sliding block 9 and the opposite surface of the smoke processing pipe 2.

When in actual application, burn the flue gas in the burning furnace 1 and firstly carry out preliminary filtering work through the dust bag 5 in the flue gas treatment pipe 2, and the flue gas is stored in the tobacco cavity through advancing smoke mouth 11 short time, in this process, slider 8 and No. two sliders all move along spout 7 in opposite directions, when No. two sliders 9 remove the certain distance, contact each other between the conducting rod 17, thereby trigger electro-magnet 4 circular telegram and repulsion each other, and electric telescopic handle 15 contracts, drive closure plate 14 motion, thereby open smoke outlet 13, and then pour into the flue gas through smoke outlet 13 in batches and carry out further processing work in the flue gas treatment pipe 2, thereby make the time of rest in the middle of further purification action equipment exists, avoid long-time incessant work to cause the life of equipment to shorten.

Further, referring to fig. 1, fig. 3 and fig. 5, as a preferred embodiment of the present invention, a condensing mechanism is further disposed in the flue gas treatment pipe 2, the condensing mechanism includes a sliding plate 18 slidably mounted in the flue gas treatment pipe 2, a water collecting ring 20 fixedly mounted in the flue gas treatment pipe 2, and a plurality of condensing plates 23 fixedly mounted on the water collecting ring 20 at equal intervals, the sliding plate 18 is elastically connected to the flue gas treatment pipe 2, through holes are symmetrically disposed on the sliding plate 18, a second hinged door 19 is hinged in the through holes, a torsion spring is disposed at the hinged position of the second hinged door 19, a contact portion for limiting the second hinged door 19 to rotate in one direction is also disposed in the through holes, an ejection portion is disposed on a moving path of the second hinged door 19 in the flue gas treatment pipe 2, a water tank 21 is disposed in the water collecting ring 20, a water tank 28 communicated with the water tank 21 through a connecting pipe is fixedly mounted on the flue gas treatment pipe 2, the condensation plate 23 is obliquely arranged relative to the water collecting ring 20, one side of the water tank 21 is provided with a sealing plug 27 in sliding fit with the water collecting ring 20, a first gear 26 is fixedly installed on the sealing plug 27, a rack 25 meshed with the first gear 26 is fixedly installed in the flue gas treatment pipe 2, a push rod 24 is fixedly installed on the gear 26, and one end of the push rod 24 is fixedly connected with the sliding plate 18.

In the time of practical application, single batch flue gas is when the pipe 2 removes is handled to the flue gas, under the conflict effect between through flue gas and slide 18, thereby make slide 18 slide, under the meshing effect between gear 26 and rack 25, thereby with drive shutoff stopper 27 remove and cause the shutoff to the hole 22 that leaks, here conflict effect takes place between ejecting portion and the second hinge 19 simultaneously, make the through-hole open, thereby the flue gas is through water collecting ring 20, in this process, take place condensation effect between the vapor that mix with in the flue gas and the condensing plate 23, thereby convert steam into on the water droplet falls into basin 21, after single batch flue gas condensation work is accomplished, slide 18 and shutoff stopper 27 reset under the effect of elastic restoring force, and the water in the basin 21 flows into in water tank 28 through the hole 22 that leaks, accomplish condensation work, thereby water resource recovery's effect has been realized.

Further, referring to fig. 1 and 4, as a preferred embodiment of the present invention, an aqueous solution is injected into the purifying box 3, a flue gas purifying device is arranged in the purifying box 3, the flue gas purifying device includes a blowdown plate 29, the blowdown plate 29 is slidably mounted in the purifying box 3, a threaded rod 30 is symmetrically and rotatably mounted in the purifying box 3, the threaded rod 30 penetrates through the blowdown plate 29 and is in threaded fit with the blowdown plate 29, an upright post penetrating through the blowdown plate 29 is arranged in the purifying box 3, a clamping rod 33 is rotatably mounted in the upright post, a third gear 32 is coaxially and fixedly mounted on the clamping rod 33, a second gear 31 engaged with the third gear 32 is fixedly mounted at one end of the threaded rod 30, a floating block 35 is slidably mounted on the outer wall of the upright post, a driven block 34 is mounted on the clamping rod 33 at the same horizontal height as the floating block 35, and the driven block 34 are slidably mounted, all be equipped with magnet 38 between floating block 35 and the driven piece 34, attract each other between the magnet 38, the stand outer wall shaping has spiral groove 36, the crisscross slip of both sides of floating block 35 inlays and is equipped with ball 37, ball 37 and spiral groove 36 cooperate.

When in actual application, the flue gas is blowed into in purifying box 3 through flue gas treatment pipe 2, make the remaining tiny particle of flue gas fall into submarine blowdown board 29 on, when discharging the water in purifying box 3, because floating block 35 loses buoyancy, thereby slide down along the stand under its effect of gravity, and under the cooperation between ball 37 and helicla flute 36, make floating block 35 rotate in the in-process that slides down, and under the effect through magnet 38, drive driven block 34 synchronous rotation, and then drive third gear 32 of kelly 33 and kelly 33 one end and rotate, thereby under the meshing between second gear 31 and third gear 32, drive second gear 31 and threaded rod 30 and rotate, and then under the screw-thread fit, drive blowdown board 29 rebound, thereby drive debris and shift up, the work of artifical later stage cleaning has been avoided.

With the above embodiment, the working principle of the present invention is as follows:

when the invention is used, the smoke in the incinerator 1 firstly carries out primary filtering work through the dust removing bag 5 in the smoke processing pipe 2, and the smoke is stored in a smoke cavity through the smoke inlet 11 for a short time, in the process, the first sliding block 8 and the second sliding block move oppositely along the sliding groove 7, when the second sliding block 9 moves to a certain distance, the conducting rods 17 are contacted with each other, so that the electromagnet 4 is triggered to be electrified and mutually exclusive, and the electric telescopic rod 15 contracts to drive the blocking plate 14 to move, so that the smoke outlet 13 is opened, the smoke in the smoke cavity is injected into the smoke processing pipe 2 in batches through the smoke outlet 13 for further processing work, when a single batch of smoke moves in the smoke processing pipe 2, the sliding plate 18 slides under the interference effect between the smoke and the sliding plate 18, under the meshing effect between the gear 26 and the rack 25, thereby moving the sealing plug 27 and sealing the water leakage hole 22, while the contact action occurs between the ejecting part and the second hinge door 19, so that the through hole is opened, thereby the smoke passes through the water collecting ring 20, in the process, the condensation action occurs between the water vapor mixed in the smoke and the condensation plate 23, thereby the water vapor is converted into water drops and falls into the water tank 21, after the single batch of smoke condensation work is completed, the sliding plate 18 and the sealing plug 27 are reset under the action of elastic restoring force, and the water in the water tank 21 flows into the water tank 28 through the water leakage hole 22, thereby the condensation work is completed, the smoke is blown into the purifying tank 3 through the smoke processing pipe 2, so that the residual fine particles of the smoke fall onto the sewage discharging plate 29 at the bottom, when the water in the purifying tank 3 is discharged, because the floating block 35 loses buoyancy, thereby the smoke slides down along the upright column under the action of the gravity, and under the matching between the ball 37 and the spiral groove 36, make floating block 35 rotate at the in-process that slides down to under the effect through magnet 38, drive driven block 34 synchronous rotation, and then drive No. three gears 32 rotation of kelly 33 and kelly 33 one end, thereby under the meshing effect between No. two gears 31 and No. three gears 32, drive No. two gears 31 and threaded rod 30 and rotate, and then under the screw-thread fit effect, drive blowdown board 29 rebound, thereby drive debris and shift up, the work of artifical later stage clearance has been avoided.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.