CN109059533B

CN109059533B - overflow gas filtering and recycling device for medical waste rotary kiln treatment

Info

Publication number: CN109059533B
Application number: CN201810807612.XA
Authority: CN
Inventors: 李东生; 李冲; 李海鹏
Original assignee: Beijing Runtai Environmental Protection Technology Co Ltd
Current assignee: Beijing Runtai Environmental Protection Technology Co Ltd
Priority date: 2018-07-21
Filing date: 2018-07-21
Publication date: 2019-12-17
Anticipated expiration: 2038-07-21
Also published as: CN109059533A

Abstract

The invention discloses a filtering and recycling device for overflowed gas treated by a medical waste rotary kiln, which has the technical scheme that: the rotary kiln comprises a rotary kiln barrel and a power device for driving the rotary kiln barrel to rotate, wherein the scattered gas filtering and recycling device is arranged at a rotating joint of the rotary kiln barrel and comprises a wind scooper which is covered at the rotating joint of the rotary kiln barrel, the wind scooper is sequentially connected with a filtering device for filtering smoke and dust hot gas drained by the wind scooper and a fan communicated with the filtering device, an air outlet of the fan is communicated with the rotary kiln barrel, and a guiding and filtering device for guiding smoke and dust hot gas to circulate is arranged in the wind scooper. The invention has the advantages that: filtering and recovering smoke dust hot gas overflowing from the rotary joint of the rotary kiln barrel; thereby reducing the pollution of the surrounding environment caused by the scattered smoke dust.

Description

Overflow gas filtering and recycling device for medical waste rotary kiln treatment

Technical Field

The invention relates to the technical field of medical waste treatment, in particular to a filtering and recycling device for overflowed gas treated by a medical waste rotary kiln.

Background

The rotary kiln is a rotary calcining kiln (commonly called rotary kiln) and belongs to building material equipment. In the aspect of environmental protection, the developed countries in the world have more than 20 years of history of burning dangerous wastes and garbage by using a cement kiln, so that the wastes are reduced and harmless, and the wastes are used as fuel, so that coal powder is saved, and the wastes are recycled.

Chinese patent publication No. CN103575095A discloses a fall type rotary kiln. It includes the rotary kiln support, rotates on the rotary kiln support to be connected with the rotary kiln barrel, and the rotary kiln barrel sets up downwards from preceding backward slope, still is equipped with drive rotary kiln barrel pivoted rotary kiln power device on the rotary kiln support, is equipped with on the inner wall of rotary kiln barrel along rotary kiln barrel axial extension and along the at least three material upset section of thick bamboo of its cross-section ring cloth, waterfall formula rotary kiln still includes feeding sleeve and discharging sleeve, the tip rotates respectively around the rotary kiln barrel and connects on feeding sleeve and discharging sleeve, is equipped with the rotary kiln inlet pipe that stretches into rotary kiln barrel inner chamber on the feeding sleeve, and discharging sleeve's bottom is equipped with the rotary kiln discharging pipe, and discharging sleeve's rear end portion still is equipped with the flame projecting end and spouts the internal flame thrower of rotary kiln barrel, and the exhaust fan is equipped with at feeding sleeve.

When the rotary kiln power device drives the rotary kiln cylinder to rotate, smoke and dust hot gas generated by burning in the rotary kiln can overflow to the outside air through the rotary joint of the rotary kiln cylinder, so that the working environment of the rotary kiln is polluted.

Disclosure of Invention

The invention aims to provide a filtering and recycling device for spilled gas treated by a medical waste rotary kiln, which has the advantages that smoke and hot gas spilled at the rotary joint of a rotary kiln barrel body are filtered and recycled; thereby reducing the pollution of the surrounding environment caused by the scattered smoke dust.

The technical purpose of the invention is realized by the following technical scheme:

The overflow gas filtering and recycling device for rotary kiln treatment of medical wastes comprises a rotary kiln barrel and a power device for driving the rotary kiln barrel to rotate, wherein the overflow gas filtering and recycling device is arranged at a rotating joint of the rotary kiln barrel and comprises a wind scooper covered at the rotating joint of the rotary kiln barrel, the wind scooper is sequentially connected with a filtering device for filtering smoke and dust hot gas drained by the wind scooper and a fan communicated with the filtering device, an air outlet of the fan is communicated with the rotary kiln barrel, and a guiding and filtering device for guiding smoke and dust hot gas to circulate is arranged in the wind scooper; the filter device comprises a filter box which is respectively communicated with the air guide cover and the fan, a filter screen which is detachably connected with the filter box and used for filtering smoke and dust hot air led in the air guide cover is arranged in the filter box, two clamping plates which are oppositely arranged and used for clamping the filter screen are fixedly arranged on the inner wall of the filter box, and a gas dust removal mechanism used for removing gas dust from the filter screen is connected to the upper surface of each clamping plate in a sliding manner; the lower surface of the clamping plate is provided with a dust whisking mechanism for knocking and whisking the filter screen.

Through above-mentioned technical scheme, the setting of excessive gas filtration recovery unit, the steam that contains the smoke and dust that overflows when rotating the rotary kiln barrel is retrieved and is unified filtration processing to in the steam reinjection rotary kiln barrel after will filtering, thereby not only reduced the pollution of the external environment of leaking of smoke and dust steam, but also carried out reuse to the steam after filtering, make the rotary kiln more energy-conserving when operation. The setting of wind scooper covers the gas that spills and establishes to through guide filter equipment, make the leading-in to filter equipment of smoke and dust steam, and filter the smoke and dust steam through filter equipment through the continuous work of fan, and pour into the rotary kiln barrel with the steam after filtering into, improved the value of the utilization of the gas that spills. The effect that the steam that has the smoke and dust granule passes through the fan is inhaled into the rose box to filter the smoke and dust impurity in the steam through the filter screen, it is more convenient that the setting up of cardboard makes the filter screen change. The setting of gaseous dust removal mechanism can carry out preliminary dust removal work to the filter screen that contains the smoke and dust granule to improve the use ageing of filter screen, improve the filtration efficiency of filter screen, thereby reduced the change number of times of filter screen. The dust removing mechanism is matched with the gas dust removing mechanism to work, so that the effect of removing the dust particles on the filter screen is better.

The invention is further configured to: the gas dust removal mechanism comprises an air nozzle which is arranged above the clamping plate and connected with the clamping plate in a sliding mode along the length direction of the clamping plate, the air nozzle is communicated with a corrugated hose, and an air pump is fixedly connected to one end, away from the air nozzle, of the corrugated hose; the nozzle opening of the air nozzle is arranged towards the filter screen, and a driving assembly enabling the air nozzle to slide in a reciprocating mode along the length direction of the clamping plate is arranged on the air nozzle.

Through above-mentioned technical scheme, the air pump starts, makes the air nozzle to filter screen surface blowout high-pressure gas, and gaseous space through the filter screen breaks away from smoke and dust granule and filter screen, and drive assembly's setting makes the reciprocating of air nozzle remove on the filter screen upper surface to increase the effective area of gaseous dust removal, improved the efficiency of removing dust.

The invention is further configured to: the driving assembly comprises a first driving motor fixedly connected with the air nozzle, a first driving gear is fixedly connected to an output shaft of the first driving motor, and a strip-shaped rack meshed with the first driving gear is fixedly connected to the clamping plate along the length direction of the clamping plate.

Through above-mentioned technical scheme, first initiative motor corotation reversal work drives first driving gear and rotates, through the intermeshing of first driving gear and bar rack for the air nozzle blows dirt work along cardboard length direction reciprocating motion to the filter screen surface.

The invention is further configured to: a bearing plate for assisting in bearing the filter screen is fixedly connected between the clamping plates, the dusting mechanism comprises a lead screw which is arranged on one side of the bearing plate, which is far away from the filter screen, and is rotatably connected with the bearing plate, one end of the lead screw is provided with a driving motor for driving the lead screw to rotate around the rotation axis of the lead screw, and the output shaft of the driving motor is fixedly connected with the lead screw; the rotating axis of the screw rod is parallel to the bearing plate; the dust removing device comprises a lead screw, a nut matched with the lead screw is arranged on the lead screw, a limiting rod which is parallel to the length direction of the lead screw, is used for limiting the rotation of the nut and moves in a reciprocating mode along the length direction of the lead screw penetrates through the nut, and a dust removing component used for beating the filter screen in a reciprocating mode is further arranged on the nut.

According to the technical scheme, the driving motor rotates forwards or backwards to drive the screw rod to rotate, the nut moves along the length direction of the screw rod through the limiting of the limiting rod, dust whisking work is carried out on the filter screen through the dust whisking component arranged on the nut in the nut moving process, and the nut is in a moving state, so that the dust whisking action area is increased, and the dust removing efficiency is improved.

The invention is further configured to: the dust whisking assembly comprises a driving rod hinged with a nut, the driving rod is perpendicular to the rotating axis of the screw rod in the direction of the hinge of the nut, a limiting plate fixedly connected with a bearing plate is arranged beside the screw rod, the limiting plate is parallel to the rotating axis of the screw rod, a wavy limiting hole is formed in the limiting plate in the length direction of the screw rod, the driving rod penetrates through the limiting hole, and the driving rod deviates from the nut and is elastically knocked by the end portion fixedly connected with the driving rod.

Through above-mentioned technical scheme, when the in-process that the nut removed for the actuating lever wave moves down in spacing downthehole spacing, and the elastic beating subassembly is beaten the filter screen to the in-process drive elasticity that the actuating lever removed. The dust whisking component has simple structure and obvious driving effect, and is convenient for maintenance and replacement of workers.

The invention is further configured to: the elastic beating component comprises a spring fixedly connected with one end of the driving rod, which deviates from the nut, and one end of the spring, which deviates from the driving rod, is fixedly connected with an elastic beating ball.

Through the technical scheme, the driving rod drives the spring to generate elastic deformation in the reciprocating movement process, and drives the knocking ball to knock on the lower surface of the filter screen, so that the effect of separating smoke dust particles from the filter screen is improved.

The invention is further configured to: and a scrap receiving box for receiving smoke dust particles is arranged in the filter box.

Through above-mentioned technical scheme, connect setting up of bits box to play the effect of accepting with the sweeps that the filter screen breaks away from, the staff of being convenient for is unified to clear away work the sweeps, has improved the efficiency of clearing away of sweeps.

The invention is further configured to: the guiding and filtering device comprises a driving shaft which is arranged in the air guide cover and is rotationally connected with the inner wall of the air guide cover, one end of the driving shaft is fixedly connected with a rotating motor which drives the driving shaft to rotate, and a plurality of rotating flow guide assemblies which assist smoke dust hot gas to guide flow to the filter box are fixedly connected on the peripheral surface of the driving shaft.

Through above-mentioned technical scheme, the work of rotation motor drives the drive shaft and rotates for rotate the water conservancy diversion subassembly and rotate around the drive shaft, the work of cooperation person's fan makes to rotate water conservancy diversion subassembly pivoted in-process and carries out water conservancy diversion and filterable effect to the gas that overflows and loose, thereby has carried out preliminary filtration to the gas that overflows, has accelerated the quick circulation in the wind scooper of smoke and dust steam moreover.

The invention is further configured to: the rotary flow guide assembly comprises a plurality of fixing frames fixedly arranged on the circumferential surface of the driving shaft, and filter cloth detachably and fixedly connected is arranged in the fixing frames.

Through above-mentioned technical scheme, the filter cloth sets up on the mount, when rotating motor during operation, drives the circulation of heat in the wind scooper, and the filter cloth has not only played the effect of water conservancy diversion, has also played filterable effect moreover, is convenient for dismantle and change the filter screen in addition, has improved change efficiency.

In conclusion, the invention has the following beneficial effects:

Firstly, filtering and recycling the scattered smoke dust particles. The arrangement of the overflow gas filtering and recycling device recovers hot gas containing smoke dust overflowing when the rotary kiln barrel rotates, so that the hot gas is uniformly filtered, and the filtered hot gas is injected into the rotary kiln barrel again, so that the pollution of the leakage of the hot gas containing the smoke dust to the external environment is reduced, the filtered hot gas is recycled, and the rotary kiln is more energy-saving in operation;

And secondly, the waste of the filter screen is reduced. The setting of gaseous dust removal mechanism can carry out preliminary dust removal work to the filter screen that contains the smoke and dust granule to improve the use ageing of filter screen, improve the filtration efficiency of filter screen, thereby reduced the change number of times of filter screen.

Drawings

FIG. 1 is a schematic view of the overall structure of a rotary kiln

FIG. 2 is an enlarged view of detail A of FIG. 1, and showing the power plant;

FIG. 3 is a cross-sectional view embodying the guided filter arrangement;

FIG. 4 is an enlarged view at detail B of FIG. 3 and shows the pilot filter assembly;

FIG. 5 is a schematic view showing the structure of a filter device;

FIG. 6 is an enlarged view of detail C of FIG. 5, and shows the drive assembly;

FIG. 7 is a schematic structural diagram of a T-shaped slider;

FIG. 8 is a schematic view of a mechanism embodying a dusting mechanism;

FIG. 9 is an enlarged view of detail D of FIG. 8, and embodies the dusting mechanism;

Fig. 10 is a side view of an embodiment of a dusting mechanism.

in the figure, 1, a rotary kiln support; 2. a kiln body; 3. a rotary kiln cylinder; 4. a power plant; 41. a second active motor; 42. a second driving gear; 43. an annular rack; 5. a filtering and recovering device for the overflowed gas; 51. a wind scooper; 52. a guide filter device; 521. a drive shaft; 522. a fixed mount; 523. a pressing strip; 524. a filter cloth; 525. rotating the motor; 526. a screw; 53. a filtration device; 531. a filter box; 5311. a sealing door; 5312. a first connecting pipe; 5313. a second connecting pipe; 532. clamping a plate; 5321. a T-shaped groove; 533. a filter assembly; 5331. a filter screen; 5332. a support plate; 534. a gas dust removal mechanism; 5341. an air nozzle; 5342. a corrugated hose; 5343. an air pump; 5344. a T-shaped slider; 5345. a drive assembly; 53451. a first active motor; 53452. a first drive gear; 53453. a strip rack; 535. a dust whisking mechanism; 5351. supporting the back plate; 5352. a lead screw; 5353. a drive motor; 5354. a nut; 5355. a limiting rod; 5356. a dusting component; 53561. a drive rod; 53562. a spring; 53563. knocking and hitting the ball; 5357. a limiting plate; 53571. a limiting hole; 5358. a chip receiving box; 54. a fan; 55. a return pipe.

Detailed Description

A rotary kiln for treating medical wastes comprises a rotary kiln support 1, a kiln body 2 is horizontally and fixedly connected to the rotary kiln support 1, and a rotary kiln barrel 3 is coaxially and rotatably connected to one end of the kiln body 2, as shown in figure 1. The lower circumferential surface of the rotary kiln is provided with a power device 4 which is fixedly connected with the ground and supports and drives the rotary kiln barrel 3 to rotate. And the rotary kiln barrel 3 is provided with an overflow gas filtering and recycling device 5 for filtering and recycling the overflow smoke dust hot gas at the rotary joint.

As shown in fig. 1 and 2, the power device 4 includes two second driving motors 41 parallel to each other and fixedly connected to the ground, a second driving gear 42 is fixedly connected to an output shaft of the second driving motor 41, and an annular rack 43 engaged with the two second driving gears 42 is fixedly connected to the circumferential surface of the rotary kiln cylinder 3. When the second driving motor 41 works, the second driving gear 42 drives the rotary kiln cylinder 3 to rotate through meshing with the annular rack 43, so that the medical waste in the rotary kiln cylinder 3 is subjected to rotary incineration treatment.

An overflow gas filtering device for rotary kiln treatment of medical waste is applied to the rotary kiln for medical waste treatment, as shown in fig. 1 and 3, and comprises a wind guide cover 51 erected at the rotary connection position of a rotary kiln barrel 3 and a kiln body 2: the wind scooper 51 is covered on the upper circumferential surface of the rotary kiln cylinder 3 and is matched with the outline of the outer circumferential surface of the rotary kiln cylinder 3, so that the gas overflowing from the rotary joint of the rotary kiln cylinder 3 is guided. The wind scooper 51 is further communicated with a filter device 53 for filtering the smoke and dust hot gas guided by the wind scooper 51 and a fan 54 communicated with the filter device 53, an air outlet of the fan 54 is fixedly connected with a return pipe 55, and one end of the return pipe 55 departing from the fan 54 is communicated with the kiln body 2. When the fan 54 works, the overflowed smoke hot gas is sucked into the filtering device 53 through the diversion of the air guide cover 51, smoke particles in the hot gas are filtered, and the filtered hot gas is pumped into the kiln body 2 through the return pipe 55. Thereby reducing the heat loss of the incineration of the rotary kiln and reducing the pollution of the external environment caused by the overflowed gas. The air guide cover 51 is also provided with a guide filter 52.

As shown in fig. 1 and 4, the guiding and filtering device 52 includes two parallel driving shafts 521 rotatably connected to the inner wall of the wind scooper 51, four arc-shaped fixing frames 522 are fixedly connected to the circumferential surface of the driving shafts 521, a pressing bar 523 is connected to one side corner of the fixing frame 522 through a screw 526, and a filter cloth 524 is interposed between the fixing frame 522 and the pressing bar 523. And one end of the driving shaft 521 is provided with a rotating motor 525 fixedly connected with the air guiding cover 51, and an output shaft of the rotating motor 525 is coaxially and fixedly connected with the driving shaft 521. When the fan 54 works, the rotating motor 525 is started to drive the driving shaft 521 to rotate, so that the fixing frame 522 drives the filter cloth 524 to rotate around the driving shaft 521; in the process of rotating the fixing frame 522, the flow of the scattered gas of the wind scooper 51 is accelerated, and the filter cloth 524 also performs a preliminary filtering operation on the soot particles in the scattered gas.

As shown in fig. 5, the filtering device 53 includes a filtering box 531 fixed on the ground, and a sealing door 5311 (shown in fig. 8) for opening and closing the filtering box 531 is hinged to one side of the filtering box 531. The filter box 531 is further fixedly connected with a first connecting pipe 5312 and a second connecting pipe 5313, and end portions of the first connecting pipe 5312 and the second connecting pipe 5313 departing from the filter box 531 are fixedly connected with an air inlet of the air guiding cover 51 (shown in fig. 1) and an air inlet of the fan 54 (shown in fig. 1) respectively. Two opposite inner walls in the filter box 531 are horizontally and fixedly connected with a clamping plate 532 with a longitudinal section being Contraband type, and a filter component 533 is connected in a sliding manner in a cavity of the clamping plate 532. The first connection pipe 5312 and the connection between the first connection pipe 5312 and the filter tank 531 are disposed at the upper and lower sides of the clamping plate 532. The filtering assembly 533 includes a rectangular filtering net 5331, and four sides of the filtering net 5331 are fixedly connected to a supporting plate 5332 made of metal, so that the filtering net 5331 can maintain a planar filtering state under the support of the supporting plate 5332. And slide filter component 533 in the cardboard 532, can be in the horizontal erections and the rose box 531, carry out the filtering action to the gas that enters into rose box 531, also make things convenient for to change filter component 533 moreover. The upper surface and the lower surface of the clamping plate 532 are respectively provided with a gas dust removal mechanism 534 for removing dust from the filter component 533 and a dust removing mechanism 535 for knocking and removing dust from the filter component 533.

As shown in fig. 5 and 6, the gas dust removing device includes an air nozzle 5341 disposed above the clamping plate 532 and slidably connected to the clamping plate 532 along the length direction of the clamping plate 532, the air nozzle 5341 is further fixedly connected with a corrugated hose 5342, and an end of the corrugated hose 5342 away from the air nozzle 5341 penetrates through an inner wall of the filter box 531 and is fixedly connected with an air pump 5343. The opening of the air nozzle 5341 is disposed toward the filter screen 5331, two T-shaped sliders 5344 (shown in fig. 7) are fixedly connected to the position of the opening of the air nozzle 5341 corresponding to the clamping plate 532, and a T-shaped groove 5321 for accommodating the T-shaped slider 5344 (shown in fig. 7) is disposed on the upper surface of the clamping plate 532 corresponding to the T-shaped slider 5344 (shown in fig. 7) along the length direction of the clamping plate 532. One side of the air nozzle 5341 is provided with a driving assembly 5345 for driving the air nozzle 5341 to slide back and forth along the length direction of the clamping plate 532.

as shown in fig. 5 and 6, the driving assembly 5345 includes a first driving motor 53451 horizontally fixed on one side of the air nozzle 5341, a first driving gear 53452 is fixed on an output shaft of the first driving motor 53451, and a bar-shaped rack 53453 engaged with the first driving gear 53452 is fixed on an upper surface of the card 532 on one side along a length direction of the card 532. When the air pump 5343 is started, the first driving motor 53451 works, the air nozzle 5341 is driven to move on the clamping plate 532 by the mutual engagement of the first driving gear 53452 and the strip-shaped rack 53453, the reciprocating movement of the air nozzle 5341 is realized by the positive rotation or the negative rotation of the first driving motor 53451, and high-pressure air is blown out of the surface of the filter screen 5331, so that smoke particles filtered by the surface of the filter screen 5331 are separated from the filter screen 5331 more easily.

as shown in fig. 8, the dust removing mechanism 535 includes a support back plate 5351 fixedly connected to two clamping plates 532 for supporting the filtering component 533, a lead screw 5352 is rotatably connected to a side of the support plate away from the filtering net 5331, one end of the lead screw 5352 penetrates through a side wall of the filtering box 531, a driving motor 5353 (shown in fig. 10) is fixedly connected to an outer wall of the filtering box 531, an output shaft of the driving motor 5353 (shown in fig. 10) is fixedly connected to the lead screw 5352, and a rotation axis of the lead screw 5352 is parallel to the support plate. The screw 5352 is connected with a nut 5354 in a threaded manner, the nut 5354 is provided with a limiting rod 5355 parallel to the screw 5352 in a penetrating manner, and two ends of the limiting rod 5355 are fixedly connected with the bearing plate. When the driving motor 5353 is started, the nut 5354 reciprocates in the opposite direction along the length of the lead screw 5352 under the limit of the limit rod 5355. Both sides of the nut 5354 are also provided with dust whisking assemblies 5356 which knock the filter screen 5331.

As shown in fig. 9, the dusting component 5356 includes driving rods 53561 disposed on two sides of the nut 5354 and vertically hinged to the nut 5354 in the moving direction, and limiting plates 5357 fixed to the supporting plate are vertically disposed on two sides of the nut 5354, a wavy limiting hole 53571 is disposed on the limiting plate 5357 along the length direction of the screw 5352, the driving rods 53561 are inserted into the limiting hole 53571, and the driving rods 53561 are driven by the driving motor 5353 to move up and down in a reciprocating manner along with the movement of the nut 5354. The end part of the driving rod 53561 departing from the nut 5354 is fixedly connected with a spring 53562, and the end part of the spring 53562 departing from the driving rod 53561 is fixedly connected with an elastic knocking ball 53563. When the driving rod 53561 moves up and down in the limiting direction of the limiting hole 53571, the spring 53562 is driven to swing elastically, so that the knocking ball 53563 beats on the lower surface of the filter screen 5331 in a reciprocating manner, the knocking range of the knocking ball 53563 is increased, and the smoke particles in the filter screen 5331 are separated from the filter screen 5331 more easily by matching with the work of the gas dust removal device. And a scrap receiving box 5358 for receiving soot particles blown and knocked out by the gas scrap removing mechanism and the dust dusting mechanism 535 is connected in the filter box 531 in a sliding manner, so that the working personnel can more conveniently perform unified treatment on the scrap.

the working process is as follows: when the rotary kiln works, the fan 54 is started and the rotating motor 525 is started, so that the rotary kiln barrel 3 rotates and the overflowed hot air at the joint enters the filter box 531 along the first connecting pipe 5312 under the rotation of the fixing frame 522, the hot air filters out smoke dust particles in the hot air through the filter screen 5331 due to the air pressure, and the filtered hot air enters the second connecting pipe 5313 and flows back to the kiln body 2 through the return pipe 55. If the filter screen 5331 is used for a long time, the filter screen 5331 can be replaced, or the driving motor 5353 and the first driving motor 53451 are started to make the air nozzle 5341 reciprocate above the filter screen 5331 to blow air and remove dust on the filter screen 5331; the nut 5354 is driven to move in a reciprocating manner to drive the driving rod 53561 to slide in the limiting hole 53571, so that the knocking ball 53563 is knocked on the surface of the filter screen 5331 to duster the filter screen 5331.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides an excessive gas that medical discarded object rotary kiln was handled filters recovery unit, includes rotary kiln barrel (3) to and drive rotary kiln barrel (3) pivoted power device (4), characterized by: the device comprises an overflow gas filtering and recycling device (5) and a fan (54), wherein the overflow gas filtering and recycling device (5) is arranged at the rotary joint of a rotary kiln cylinder body (3), the overflow gas filtering and recycling device (5) comprises a wind scooper (51) which is covered at the rotary joint of the rotary kiln cylinder body (3), the wind scooper (51) is sequentially connected with a filtering device (53) used for filtering smoke hot gas drained by the wind scooper (51) and the fan (54) communicated with the filtering device (53), an air outlet of the fan (54) is communicated with the rotary kiln cylinder body (3), and a guiding and filtering device (52) used for guiding smoke hot gas to circulate is arranged in the wind scooper (51);

the filtering device (53) comprises a filtering box (531) which is respectively communicated with the air guide cover (51) and the fan (54), a filtering net (5331) which is detachably connected and used for filtering smoke and dust hot air led in the air guide cover (51) is arranged in the filtering box (531), two clamping plates (532) which are oppositely arranged and used for clamping the filtering net (5331) are fixedly arranged on the inner wall of the filtering box (531), and a gas dust removing mechanism (534) which is used for performing gas dust removal on the filtering net (5331) is connected to the upper surface of each clamping plate (532) in a sliding mode; the lower surface of the clamping plate (532) is provided with a dust whisking mechanism (535) for knocking and whisking the filter screen (5331).

2. The device for filtering and recovering the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 1, which is characterized in that: the gas dust removal mechanism (534) comprises an air nozzle (5341) which is arranged above the clamping plate (532) and connected in a sliding mode along the length direction of the clamping plate (532), the air nozzle (5341) is communicated with a corrugated hose (5342), and an air pump (5343) is fixedly connected to one end, away from the air nozzle (5341), of the corrugated hose (5342); the mouth of the air nozzle (5341) faces the filter screen (5331), and a driving component (5345) which enables the air nozzle (5341) to slide in a reciprocating mode along the length direction of the clamping plate (532) is arranged on the air nozzle (5341).

3. The device for filtering and recovering the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 2, which is characterized in that: the driving assembly (5345) comprises a first driving motor (53451) fixedly connected with the air nozzle (5341), a first driving gear (53452) is fixedly connected to an output shaft of the driving motor, and a strip-shaped rack (53453) meshed with the driving gear is fixedly connected to the clamping plate (532) along the length direction of the clamping plate (532).

4. The device for filtering and recycling the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 3, which is characterized in that: a bearing plate for assisting in bearing the filter screen (5331) is fixedly connected between the clamping plates (532), the dust removing mechanism (535) comprises a lead screw (5352) which is arranged on one side of the bearing plate, which is far away from the filter screen (5331), and is rotationally connected with the bearing plate, one end of the lead screw (5352) is provided with a driving motor (5353) which drives the lead screw (5352) to rotate around the rotation axis of the lead screw (5352), and the output shaft of the driving motor (5353) is fixedly connected with the lead screw (5352); the rotating axis of the screw rod (5352) is parallel to the bearing plate; the lead screw (5352) is provided with a nut (5354) matched with the lead screw (5352), the nut (5354) penetrates through a limiting rod (5355) which is parallel to the length direction of the lead screw (5352) and used for limiting the rotation of the nut (5354) and moves in a reciprocating mode along the length direction of the lead screw (5352), and the nut (5354) is further provided with a dust removing component (5356) used for beating the filter screen (5331) in a reciprocating mode.

5. The device for filtering and recycling the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 4, which is characterized in that: the dust whisking component (5356) comprises a driving rod (53561) hinged with a nut (5354), the hinged direction of the driving rod (53561) and the nut (5354) is perpendicular to the rotating axis of the screw rod (5352), a limiting plate (5357) fixedly connected with the supporting plate is arranged beside the screw rod (5352), the rotating axes of the limiting plate (5357) and the screw rod (5352) are parallel to each other, a wavy limiting hole (53571) is formed in the limiting plate (5357) in the length direction of the screw rod (5352), the driving rod (53561) penetrates through the limiting hole (53571), and the end, away from the nut (5354), of the driving rod (53561) is fixedly connected with an elastic beating component.

6. the device for filtering and recycling the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 5, which is characterized in that: the elastic beating component comprises a spring (53562) fixedly connected with one end of the driving rod (53561) departing from the nut (5354), and one end of the spring (53562) departing from the driving rod (53561) is fixedly connected with an elastic beating ball (53563).

7. the device for filtering and recycling the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 6, which is characterized in that: and a scrap receiving box (5358) for receiving smoke dust particles is arranged in the filter box (531).

8. The device for filtering and recycling the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 7, which is characterized in that: the guiding and filtering device (52) comprises a driving shaft (521) which is arranged in the air guide cover (51) and is rotationally connected with the inner wall of the air guide cover (51), one end of the driving shaft (521) is fixedly connected with a rotating motor (525) for driving the driving shaft (521) to rotate, and a plurality of rotating flow guide assemblies which assist smoke and dust hot air to guide to the filter box (531) are fixedly connected to the peripheral surface of the driving shaft (521).

9. The device for filtering and recycling the overflowed gas of the medical waste rotary kiln treatment as claimed in claim 8, which is characterized in that: the rotary flow guide assembly comprises a plurality of fixing frames (522) fixedly arranged on the circumferential surface of the driving shaft (521), and filter cloth (524) detachably and fixedly connected with the fixing frames (522) is arranged in the fixing frames.