CN112696687A

CN112696687A - Rotary kiln with middle air intake device

Info

Publication number: CN112696687A
Application number: CN202011571817.6A
Authority: CN
Inventors: 乔德友; 陶经坚
Original assignee: Shanghai Yude Environment Protection Engineering Co ltd
Current assignee: Shanghai Yude Environment Protection Engineering Co ltd
Priority date: 2020-12-27
Filing date: 2020-12-27
Publication date: 2021-04-23

Abstract

The invention discloses a rotary kiln with a middle air inlet device, which comprises a kiln body part, a transmission device, the middle air inlet device and a feeding device, wherein the tail part of the kiln body part is hermetically connected with the feeding device, the transmission device is arranged on the right side of the middle part of the kiln body part, and the middle air inlet device is arranged in the middle part of the kiln body part and is positioned on the left side of the transmission device. After the hazardous waste is poured into feeding device, receive the influence of gravity and can glide in the cavity, enter into kiln body part in, kiln body part sets up the form and is higher than the kiln head position for kiln tail position, and the rotary kiln is when normal work, and transmission can drive the barrel and slowly rotate, and hazardous waste slowly slides to the kiln head from the kiln tail at rotatory in-process to the rotary motion can constantly turn hazardous waste, makes its burning more abundant. When the dangerous waste reaches the middle part of the kiln body part, the middle air inlet device can feed air from the middle position to provide sufficient oxygen for incineration, and the burned residues and the flue gas are discharged from the kiln head together.

Description

Rotary kiln with middle air intake device

Technical Field

The invention relates to the technical field of hazardous waste incineration, in particular to a rotary kiln with a middle air inlet device.

Background

The notice issued by the national environmental protection department about technical policy for preventing and treating hazardous waste pollution indicates that: the hazardous waste incineration can realize the reduction and the harmlessness of the hazardous waste and can recycle the waste heat. The incineration disposal is suitable for dangerous waste which is not suitable for recycling useful components and has a certain calorific value. Explosive wastes are not suitable for incineration disposal, and the incineration of dangerous wastes is preferably realized by adopting an incineration technology based on a rotary kiln, so that different types of furnaces can be selected according to the types and characteristics of the dangerous wastes, and the transformation and the adoption of a rotary kiln for producing cement for additional combustion or special combustion of the dangerous wastes are encouraged. In recent years, the construction market of hazardous waste incineration in China is becoming more mature. The method is mainly close to rotary kiln incinerators adopting different combinations, and particularly has great technical development space for improvement on application. The rotary kiln has the advantages of long retention time, good heat insulation and the like, and the waste material layer is fully turned over due to the rotation action, and the rotary kiln incinerator has strong adaptability to the change of the incinerated materials, so that the rotary kiln incinerator becomes an ideal incineration system for all wastes. However, in the rotary kiln of the prior art, the vent is connected to the kiln tail, and when the dangerous incineration materials are preheated at the inlet, the oxygen is provided sufficiently, but in the middle stage of the rotary kiln, the dangerous waste enters the incineration stage, a large amount of oxygen is required at the moment, but the insufficient oxygen is often generated due to the air flow supply at the kiln tail, so that the incineration is insufficient.

Disclosure of Invention

The invention aims to provide a rotary kiln with a middle air inlet device, which aims to solve the problems in the prior art.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a rotary kiln of hot blast blowpipe apparatus in middle of area, includes kiln body part, transmission, middle hot blast blowpipe apparatus and feed arrangement, kiln body part afterbody and feed arrangement sealing connection, transmission install on kiln body part middle part right side, and middle hot blast blowpipe apparatus is installed in kiln body part middle part, is located the transmission left side. After the hazardous waste pours into feed arrangement, receive the influence of gravity can glide in the cavity, enter into kiln body part in, hazardous waste burns in the rotary kiln and will advance three stage, preheats the stage promptly, burns stage and burn out the stage, and when hazardous waste reachs kiln body part middle part, middle hot blast blowpipe apparatus can be from the middle position air inlet, provides sufficient oxygen for burning. The kiln body part is arranged in a mode that the position of the kiln tail is higher than that of the kiln head, when the rotary kiln normally works, the transmission device can drive the barrel to slowly rotate, the dangerous waste slowly slides to the kiln head from the kiln tail in the rotating process, and the dangerous waste can be continuously stirred in the rotating action, so that the dangerous waste is more fully combusted.

Further, the kiln body component comprises a cylinder body, tug wheel assemblies, a kiln head and a kiln tail, the kiln head and the kiln tail are arranged at two ends of the cylinder body, the plurality of groups of tug wheel assemblies are arranged below the cylinder body, and the height of the tug wheel assemblies is sequentially reduced from the kiln tail to the kiln head. The barrel is internally provided with a fire-resistant layer, so that long-time high-temperature operation can be guaranteed, when the rotary kiln works, hazardous waste enters the barrel from the kiln tail, residues and smoke are discharged from the kiln head after sufficient combustion, and when the barrel rotates, the tug boat assembly axially positions the barrel.

The further tug assembly comprises an annular wheel belt, a base plate, a baffle plate, a supporting tug, a tug mounting seat, a tug support and a flange, wherein the base plate is mounted on the surface of the outer wall of the barrel, the baffle plate is mounted above the base plate, the annular wheel belt is strung outside the barrel, the inner ring surface of the annular wheel belt is in contact with the base plate, the outer edge of the side edge of the annular wheel belt is clamped by the baffle plate, the outer surface of the supporting tug is in contact with the outer surface of the annular wheel belt, the supporting tug is mounted on the tug mounting seat, the tug mounting seat is fixedly connected to the tug support, the tug support is fixedly connected with the. When the rotary kiln works, the cylinder body rotates, a tug assembly is designed for fixing the position of the cylinder body when the rotary kiln rotates, when the cylinder body rotates, an annular wheel belt rotates along with the cylinder body under the driving of the friction force of a backing plate, the annular wheel belt is axially positioned by baffles on the outer edges of two side edges, the annular wheel belt and a supporting wheel generate rolling friction, the annular wheel belt is radially positioned by the two side supporting tugs without influencing the circumferential rotation of the annular wheel belt, the annular wheel pair is axially fixed relative to the tug support by flanges arranged on the two sides of the tug support, and the cylinder body is prevented from axially moving in the rotating process.

Furthermore, the transmission device comprises a large gear ring, a small gear, a gear shaft, a shaft ring, a bearing mounting seat, a transmission motor, a reduction gearbox, a coupling and a support frame, wherein the bottom of the bearing mounting seat, the transmission motor and the reduction gearbox is fixedly connected with the upper surface of the support frame, the large gear is arranged on the outer surface of the cylinder body, the bearing is arranged in the bearing mounting seat, the gear shaft penetrates through the bearing, the small gear is arranged on the gear shaft, the tooth surface of the small gear is meshed with the tooth surface of the large gear ring, the shaft ring is arranged on the two sides of the small gear, the output shaft of the transmission. The transmission motor provides a low-speed rotation of large torque for the pinion under the control of the speed reducer, the pinion is meshed with the tooth surface of the large gear ring, the large gear ring rotates, the large gear ring is fixedly connected with the cylinder body, the cylinder body rotates along with the large gear ring, and dangerous burning objects pressed on the bottom layer of the cylinder body are turned over in the rotating process of the cylinder body, so that the combustion is more sufficient.

Furthermore, the middle air inlet device comprises a steel support of the sealed cabin body, a shell of the sealed cabin body, an air inlet cabin assembly, an axial sealing assembly and an air cap assembly, the top of the steel support of the sealed cabin body is fixedly connected with the lower portion of the shell of the sealed cabin body, the bottom of the steel support of the sealed cabin body is connected with the ground through foundation bolts, the air inlet and a waste residue outlet are arranged on the shell of the sealed cabin body, the air inlet cabin assembly is arranged inside the shell of the sealed cabin body, the axial sealing assembly is arranged on two sides of the shell of the sealed cabin body and a contact portion of the barrel body, and the air. The steel frame of the sealed cabin body provides supporting force for the shell of the sealed cabin body, when the device works, external air flow enters the air inlet cabin assembly from the air inlet and then enters the barrel body from the air inlet cabin assembly to provide sufficient oxygen for incineration, the axial sealing assembly seals the contact part of the middle air inlet device and the barrel body to prevent smoke from leaking, the air cap assembly realizes multi-directional air inlet amount regulation and control, and the controllability of a dangerous incineration system is improved.

Further, the air inlet bin assembly comprises an outer air bin, an inner air bin and an air inlet channel, the outer air bin is installed outside the barrel, the inner air bin is embedded into the barrel, and one end of the air inlet channel is connected with one end of the outer air bin and connected with the inner air bin. The air current is full of whole outer wind storehouse earlier after getting into outer wind storehouse, passes through inlet air channel and gets into interior wind storehouse again, and the setting of interior outer wind storehouse has guaranteed that the inside waste gas of air inlet in-process barrel is difficult for leaking.

Further, the axial seal subassembly includes sealed rope, axial self-tightening compression device, the sealed scale of secondary, pressure regulating dodge gate and the sealed storehouse body, the winding of sealed rope is on the barrel lateral wall along the radial direction of barrel, and axial self-tightening compression device installs on the barrel, and its side withstands the sealed rope, the sealed storehouse body is installed at sealed storehouse body shell side, and on one side and the contact of sealed storehouse body shell, on one side and the contact of barrel lateral wall, axial self-tightening compression device is located the sealed storehouse internal portion, and the pressure regulating dodge gate is installed in sealed storehouse body side, the barrel outside limit is connected to the pressure regulating dodge gate other end is connected to the sealed scale one end. The contact part of the shell and the barrel of the sealing cabin body is provided with a gap, in order to ensure the whole air tightness of the device, a plurality of circles of sealing ropes are wound in the radial direction of the barrel, the gap is just blocked by the sealing ropes, and the sealing ropes can be made of ceramic fiber ropes. The axial self-tightening compression device is propped against the sealing rope, so that the sealing rope is radially deformed, and the whole gap is filled with the sealing rope. The sealed storehouse body carries out secondary seal again with airtight space, and its upper portion is opened has the pressure regulating dodge gate to control the internal pressure in the sealed storehouse, and the sealed storehouse body is followed the secondary seal scale of installing with barrel contact department down and is played sealed effect to the gap of the two junction, and this seal assembly is sealed through the multilayer and is showing the whole leakproofness that has improved the device.

Further, the axial self-tightening compression device comprises a fixed block, a guide post, a spring, a movable plate and a top block, wherein the side edge of the fixed block is installed on the inner wall of the sealed bin body, the bottom of the fixed block is installed in a guide groove of the top block, the top of the top block is in contact with the sealing rope, the guide post is fixedly connected to the side edge of the fixed block, a round hole is formed in the movable plate, the guide post penetrates through the round hole, the bottom side of the movable plate is fixedly connected with the side edge of the top block, and the spring is connected between a separation blade at. The device during operation kicking block top is at sealed rope side, and the spring is in compression state, and guide post top separation blade is withstood to spring one end, because guide post fastening connection is on the fixed block, this one side of top separation blade can't promote. The spring can only promote the fly leaf of opposite side contact, and the fly leaf moves on the guide post on upper portion under the effect of spring force, drives the kicking block and compresses tightly the sealing rope, and the sealing rope takes place radial deformation, blocks up the sealing clearance completely, and the fixed block bottom is installed in the guide way of kicking block can guarantee that the fly leaf keeps synchronous its upper and lower position when being promoted.

Furthermore, the blast cap assembly comprises a blast cap, an air pipe and a base, the blast cap is installed at one end of the air pipe, the base is installed at the other end of the air pipe, the two ends of the air pipe are respectively provided with trapezoidal outer pipe threads, the base is installed on the inner wall of the cylinder body, and the connection mode is pipe thread connection. The leakproofness of hood subassembly has been guaranteed to the connected mode of pipe thread, and simple air intake setting can only one-way air inlet, and the hood subassembly then can the air inlet of a plurality of directions simultaneously, chooses for use the hood of different trompil specifications can also be through the intake of each direction trompil number control.

Further, feed arrangement includes feed inlet, discharge gate, cavity, intake stack, steel structure support and inspection door, the feed inlet is located the cavity top, and the discharge gate is located the cavity left side, and the intake stack is located the cavity right side, steel structure support is located the cavity below, and the inspection door is located cavity upper portion side. The feed inlet sets up in the cavity top, when hazardous waste is dumped into and burns the mouth, can slide down to the discharge gate along the cavity under the action of gravity, and the inspection door that sets up on the cavity provides convenience for daily point inspection maintenance.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the air input of the intermediate incineration stage is improved by adding the intermediate air inlet device, the dangerous waste can slowly move forward in the rotary kiln by the feeding mode of small-angle inclined matching with the rotation of the barrel, and the arrangement ensures that the dangerous waste can be fully combusted in the rotary kiln. The sealing property of the whole middle air inlet device is greatly improved by the multi-layer sealing of the axial sealing assembly with the sealing bin, the one-way flowability of the air inlet device is ensured by the air inlet design of the inner and outer double air bins, and the leakage of smoke is prevented.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a kiln body assembly of the present invention;

FIG. 3 is a schematic view of the tug assembly construction of the invention;

FIG. 4 is a schematic illustration of the transmission of the present invention;

FIG. 5 is an elevational, cross-sectional view of the intermediate air intake device of the present invention;

FIG. 6 is a side cross-sectional view of the intermediate air intake device of the present invention;

FIG. 7 is an enlarged partial view of the intermediate air intake device of the present invention;

FIG. 8 is a schematic view of the feed apparatus of the present invention;

in the figure: 1-kiln body part, 11-cylinder body, 12-tug assembly, 121-annular wheel belt, 122-backing plate, 123-baffle, 124-supporting tug, 125-tug mounting seat, 126-tug bracket, 127-flange, 13-kiln head, 14-kiln tail, 2-transmission device, 21-large gear ring, 22-small gear, 23-gear shaft, 24-shaft collar, 25-bearing, 26-bearing mounting seat, 27-transmission motor, 28-reduction gearbox, 29-coupler, 210-support frame, 3-middle air inlet device, 31-sealing bin body steel bracket, 32-sealing bin body shell, 33-air inlet, 34-air inlet bin assembly, 341-outer air bin, 342-inner air bin, 343-air inlet channel, 35-axial sealing component, 351-sealing rope, 352-axial self-tightening compression device, 3521-fixing block, 3522-guide column, 3523-spring, 3524-movable plate, 3525-top block, 353-secondary sealing scale, 354-pressure regulating movable door, 355-sealing cabin body, 36-hood component, 361-hood, 362-air pipe, 363-base, 4-feeding device, 41-feeding hole, 42-discharging hole, 43-cavity, 44-air inlet pipeline, 45-steel structure bracket and 46-inspection door.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides the following technical solutions:

as shown in fig. 1, a rotary kiln with a middle air intake device 3 comprises a kiln body part 1, a transmission device 2, the middle air intake device 3 and a feeding device 4, wherein the tail part of the kiln body part 1 is hermetically connected with the feeding device 4, the transmission device 2 is installed on the right side of the middle part of the kiln body part 1, and the middle air intake device 3 is installed in the middle part of the kiln body part 1 and is located on the left side of the transmission device 2. After the dangerous waste is poured into the feeding device 4, the dangerous waste can slide down in the cavity 43 under the influence of gravity and enter the kiln body part 1, the dangerous waste is burnt in the rotary kiln and three stages, namely a preheating stage, a burning stage and a burning-out stage are carried out, when the dangerous waste reaches the middle part of the kiln body part 1, the middle air inlet device 3 can enter air from a middle position to provide sufficient oxygen for burning. The kiln body part 1 is arranged in a mode that the position of a kiln tail 14 is higher than the position of a kiln head 13, when the rotary kiln normally works, the transmission device 2 can drive the cylinder body 11 to slowly rotate, dangerous waste slowly slides to the kiln head 13 from the kiln tail 14 in the rotating process, and the dangerous waste can be continuously turned through the rotating action, so that the burning of the dangerous waste is more sufficient.

As shown in fig. 2, the kiln body component 1 comprises a cylinder 11, tug assemblies 12, a kiln head 13 and a kiln tail 14, wherein the kiln head 13 and the kiln tail 14 are arranged at two ends of the cylinder 11, a plurality of groups of tug assemblies 12 are arranged below the cylinder 11, and the heights of the tug assemblies 12 are sequentially reduced from the kiln tail 14 to the kiln head 13. The barrel 11 is internally provided with a fire-resistant layer, so that long-time high-temperature operation can be guaranteed, when the rotary kiln works, hazardous waste enters the barrel 11 from the kiln tail 14, residues and smoke are discharged from the kiln head 13 after sufficient combustion, and when the barrel 11 rotates, the tug boat assembly 12 axially positions the barrel 11.

As shown in fig. 1 and 3, the tug assembly comprises an annular wheel belt 121, a backing plate 122, a baffle plate 123, a supporting tug 124, a tug mounting seat 125, a tug bracket 126 and a flange 127, wherein the backing plate 122 is mounted on the outer wall surface of the barrel, the baffle plate 123 is mounted above the backing plate 122, the annular wheel belt 121 is strung outside the barrel, the inner ring surface of the annular wheel belt 121 is contacted with the backing plate 122, the outer side edge of the annular wheel belt is clamped by the baffle plate 123, the outer surface of the supporting tug 124 is contacted with the outer surface of the annular wheel belt 121, the supporting tug 124 is mounted on the tug mounting seat 125, the tug mounting seat 125 is fixedly connected to the tug bracket 126, the tug bracket 126 is fixedly connected with the ground, and the. When the rotary kiln works, the cylinder rotates, a tug assembly is designed for fixing the position of the cylinder when the rotary kiln rotates, when the cylinder rotates, the annular wheel belt 121 rotates along with the cylinder under the driving of the friction force of a backing plate 122, the annular wheel belt 121 is axially positioned by the baffle plates 123 on the outer edges of two side edges, the annular wheel belt 121 and the supporting wheels generate rolling friction, the annular wheel belt 121 is radially positioned by the supporting tug wheels 124 on the two side edges but the circumferential rotation of the annular wheel belt 121 is not influenced, the annular wheel pair is axially fixed relative to the tug support 126 by the retaining edges 127 arranged on the two side edges of the tug support 126, and the cylinder is prevented from axially moving in the rotating process.

As shown in fig. 1 and 4, the transmission device 2 includes a large gear ring 21, a small gear 22, a gear shaft 23, a collar 24, a bearing 25, a bearing mounting seat 26, a transmission motor 27, a reduction gearbox 28, a coupling 29 and a support frame 210, the bottom of the bearing mounting seat 26, the transmission motor 27 and the reduction gearbox 28 are all fixedly connected with the upper surface of the support frame 210, the large gear ring 21 is mounted on the outer surface of the cylinder 11, the bearing 25 is mounted in the bearing mounting seat 26, the gear shaft 23 passes through the bearing 25, the small gear 22 is mounted on the gear shaft 23, the tooth surface of the small gear 22 is meshed with the tooth surface of the large gear ring 21, the collar 24 is mounted on two sides of the small gear 22, the output shaft of the transmission motor 27 is. The transmission motor 27 provides a low-speed rotation with large torque for the pinion 22 under the control of the speed reducer, the pinion 22 is meshed with the large gear ring 21, the large gear ring 21 rotates, the large gear ring 21 is fixedly connected with the cylinder body 11, the cylinder body 11 rotates along with the large gear ring 21, and dangerous incinerators pressed on the bottom layer are turned over on the cylinder body 11 in the rotating process, so that the combustion is more sufficient.

As shown in fig. 5 and 6, the middle air intake device 3 includes a steel bracket 31 for a sealed cabin, a shell 32 for a sealed cabin, an air intake 33, an air intake component 34, an axial sealing component 35 and an air cap component 36, the top of the steel bracket 31 for a sealed cabin is fastened below the shell 32 of the 355 for a sealed cabin, the bottom of the steel bracket 31 for a sealed cabin is connected with the ground through anchor bolts, the air intake 33 and a waste residue outlet are installed on the shell 32 for a sealed cabin, the air intake component 34 is installed inside the shell 32 for a sealed cabin, the axial sealing components 35 are installed on the two sides of the shell 32 for a sealed cabin and the contact part of the barrel 11, and a plurality of air cap 361 components 36 are installed inside the barrel. The steel support of the sealed cabin body provides supporting force for the shell 32 of the sealed cabin body, when the device works, external air flow enters the air inlet cabin assembly 34 from the air inlet 33 and then enters the inside of the barrel 11 through the air inlet cabin assembly 34 to provide sufficient oxygen for incineration, the axial sealing assembly 35 seals the contact part of the middle air inlet device 3 and the barrel 11 to prevent smoke from leaking, the blast cap assembly 36 realizes multidirectional air inlet amount regulation and control, and the controllability of a dangerous incineration system is improved.

As shown in fig. 5 and 6, the air inlet box assembly 34 includes an outer air box 341, an inner air box 342, and an air inlet channel 343, the outer air box 341 is installed outside the barrel 11, the inner air box 342 is embedded inside the barrel 11, and one end of the air inlet channel 343 is connected to one end of the outer air box 341 and is connected to the inner air box 342. After entering the outer air box 341, the air flow fills the whole outer air box 341 first, and then enters the inner air box 342 through the air inlet channel 343, and the arrangement of the inner and outer air boxes 341 ensures that the waste gas inside the cylinder 11 is not easy to leak out in the air inlet process.

As shown in fig. 5 and 7, the axial sealing assembly 35 includes a sealing rope 351, an axial self-tightening compression device 352, a secondary sealing scale 353, a pressure regulating movable door 354 and a sealing cartridge body 355, the sealing rope 351 is wound on the outer side wall of the cartridge body 11 along the radial direction of the cartridge body 11, the axial self-tightening compression device 352 is mounted on the cartridge body 11, the side edge of the axial self-tightening compression device 352 abuts against the sealing rope 351, the sealing cartridge body 355 is mounted on the side edge of the outer shell 32 of the sealing cartridge body 355, one side of the sealing cartridge body is in contact with the outer shell 32 of the sealing cartridge body 355, the other side of the sealing cartridge body is in contact with the outer side wall of the cartridge body 11, the axial self-tightening compression device 352 is located inside the sealing cartridge body 355. The contact part of the shell 32 of the sealing cabin body 355 and the barrel body 11 is provided with a gap, in order to ensure the whole air tightness of the device, a plurality of circles of sealing ropes 351 are wound in the radial direction of the barrel body 11, the position of each sealing rope 351 is just blocked by a gap, and the sealing ropes 351 can be made of ceramic fiber ropes. The axially self-tightening compression means 352 bears against the sealing cord 351 to radially deform the sealing cord 351 to fill the entire gap. The sealed bin body 355 is sealed again with airtight space, and its upper portion is opened pressure regulating dodge gate 354 and can be controlled sealed bin body 355 internal pressure, and sealed bin body 355 is along the secondary seal scale 353 of the installation of the department of contact with barrel 11 down to play sealed effect to the gap of the two junction, and this seal assembly is sealed through the multilayer and is showing the whole leakproofness that has improved the device.

As shown in fig. 7, the axial self-tightening compression device 352 comprises a fixed block 3521, a guide post 3522, a spring 3523, a movable plate 3524 and a top block 3525, wherein the side of the fixed block 3521 is mounted on the inner wall of the sealed cabin 355, the bottom of the fixed block 3521 is mounted in a guide groove of the top block 3525, the top of the top block 3525 is in contact with the sealed rope 351, the guide post 3522 is fixedly connected to the side of the fixed block 3521, a circular hole is formed in the movable plate 3524, the guide post 3522 penetrates through the circular hole, the bottom of the movable plate 3524 is fixedly connected to the side of the top block 3525, and the spring 3523 is strung between a stopper at the top end of the. When the device works, the top block 3525 is pressed against the side edge of the sealing rope 351, the spring 3523 is in a compressed state, one end of the spring 3523 presses against a baffle at the top end of the guide post 3522, and the guide post 3522 is fixedly connected to the fixing block 3521, so that the side of the top baffle cannot be pushed. The spring 3523 can only push the movable plate 3524 which is in contact with the other side, the upper portion of the movable plate 3524 moves on the guide column 3522 under the action of the spring 3523 force to drive the top block 3525 to press the sealing rope 351, the sealing rope 351 deforms radially to completely block a sealing gap, and the bottom of the fixed block 3521 is mounted in a guide groove of the top block 3525 to ensure that the upper position and the lower position of the movable plate 3524 are kept synchronous when the movable plate 3524 is pushed.

As shown in fig. 5 and 6, the blast cap 361 assembly 36 includes a blast cap 361, an air pipe 362, and a base 363, wherein the blast cap 361 is installed at one end of the air pipe 362, the base 363 is installed at the other end of the air pipe 362, both ends of the air pipe 362 have trapezoidal outer pipe threads, and the base 363 is installed on the inner wall of the cylinder 11, and the connection manner is pipe thread connection. The connection mode of pipe thread has guaranteed the leakproofness of hood 361 subassembly 36, and simple air intake 33 sets up and only can the one-way air inlet, and hood 361 subassembly 36 then can the multiple direction simultaneously air inlet, selects hood 361 of the different trompil specifications to control the intake of every direction through the trompil number of each direction.

As shown in fig. 8, the feeding device 4 includes a feeding hole 41, a discharging hole 42, a cavity 43, an air inlet duct 44, a steel structure bracket 45 and an inspection door 46, wherein the feeding hole 41 is located above the cavity 43, the discharging hole 42 is located on the left side of the cavity 43, the air inlet duct 44 is located on the right side of the cavity 43, the steel structure bracket 45 is located below the cavity 43, and the inspection door 46 is located on the upper side of the cavity 43. The feeding port 41 is arranged above the cavity 43, when dangerous waste is dumped into the incineration port, the dangerous waste can slide down to the discharging port 42 along the cavity 43 under the action of gravity, and the inspection door 46 arranged on the cavity 43 provides convenience for daily point inspection and maintenance.

The working principle of the invention is as follows: dangerous waste is poured from a feeding hole 41 of a feeding device 4 and slides down to a discharging hole 42 along a cavity 43 under the action of gravity, the discharging hole 42 is connected with a kiln tail 14, the kiln tail 14 is higher than a kiln head 13, a cylinder body 11 is driven by a transmission device 2 to rotate slowly, the dangerous waste and airflow enter the kiln tail 14 from discharging air, the dangerous waste slides down slowly along the inner wall of the cylinder body 11, the dangerous waste covered by a lower layer is continuously turned over to the surface along with the rotation of the cylinder body 11, the dangerous waste sequentially passes through a preheating stage, an incineration stage and an burnout stage in the cylinder body 11, burned residues and smoke are discharged through the kiln head 13, a large amount of oxygen is needed for supporting combustion in the middle incineration stage, an intermediate air inlet device 3 is arranged at the transition position of the preheating stage and the incineration stage, external airflow enters an external air bin 341 from an air inlet 33 and enters an internal air bin 342 through an air inlet channel 343, the airflow from the inner funnel 342 enters the barrel 11 from multiple directions under the action of the funnel 361 assembly 36 to deliver sufficient oxygen to the interior of the barrel 11.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a rotary kiln of hot blast blowpipe apparatus in middle of in-band which characterized in that: the rotary kiln comprises a kiln body part (1), a transmission device (2), a middle air inlet device (3) and a feeding device (4), wherein the tail of the kiln body part (1) is connected with the feeding device (4) in a sealing mode, the transmission device (2) is installed on the right side of the middle of the kiln body part (1), and the middle air inlet device (3) is installed in the middle of the kiln body part (1) and is located on the left side of the transmission device (2).

2. The rotary kiln with the intermediate air intake device according to claim 1, wherein: the kiln body component (1) comprises a cylinder body (11), tug assemblies (12), a kiln head (13) and a kiln tail (14), wherein the kiln head (13) and the kiln tail (14) are arranged at two ends of the cylinder body (11), a plurality of groups of tug assemblies (12) are arranged below the cylinder body (11), and the height of the tug assemblies (12) is sequentially reduced from the kiln tail (14) to the kiln head (13).

3. The rotary kiln with the intermediate air intake device according to claim 1, wherein: the tug assembly comprises an annular wheel belt (121), a base plate (122), a baffle plate (123), a supporting tug (124), a tug mounting seat (125), a tug support (126) and a flange (127), wherein the base plate (122) is mounted on the surface of the outer wall of the cylinder body, the baffle plate (123) is mounted above the base plate (122), the annular wheel belt (121) is strung outside the cylinder body, the inner circle surface of the annular wheel belt is contacted with the base plate (122), the outer edge of the side edge of the annular wheel belt is clamped by the baffle plate (123), the outer surface of the supporting tug (124) is contacted with the outer surface of the annular wheel belt (121), the supporting tug (124) is mounted on the tug mounting seat (125), the tug mounting seat (125) is fixedly connected to the tug support (126), the tug support (126) is fixedly connected to the ground, and the flange (127) is mounted on.

4. The rotary kiln with the intermediate air intake device according to claim 1, wherein: the transmission device (2) comprises a large gear ring (21), a small gear (22), a gear shaft (23), a shaft collar (24), a bearing (25), a bearing mounting seat (26), a transmission motor (27), a reduction box (28), a coupler (29) and a support frame (210), the bottom of the bearing mounting seat (26), the transmission motor (27) and the reduction gearbox (28) are fixedly connected with the upper surface of the support frame (210), the large gear ring (21) is arranged on the outer surface of the cylinder body (11), the bearing (25) is arranged in the bearing mounting seat (26), the gear shaft (23) penetrates through the bearing (25), the pinion (22) is arranged on the gear shaft (23), the tooth surface of the gear is meshed with the tooth surface of a large gear ring (21), two sides of a small gear (22) are provided with shaft rings (24), an output shaft of a transmission motor (27) is connected with a reduction gearbox (28), and the output shaft of the reduction gearbox (28) is connected with a gear shaft (23) through a coupling (29).

5. The rotary kiln with the intermediate air intake device according to claim 1, wherein: the middle air inlet device (3) comprises a sealing bin body steel support (31), a sealing bin body outer shell (32), an air inlet (33), an air inlet bin assembly (34), an axial sealing assembly (35) and an air cap assembly (36), the top of the sealing bin body steel support (31) is fixedly connected with the lower portion of the sealing bin body outer shell (32), the bottom of the sealing bin body steel support (31) is connected with the ground through foundation bolts, the air inlet (33) and a waste residue outlet are installed on the sealing bin body outer shell (32), the air inlet bin assembly (34) is installed inside the sealing bin body outer shell (32), the axial sealing assembly (35) is installed on the contact portion of the two sides of the sealing bin body outer shell (32) and the barrel body (11), and a plurality of air cap assemblies (36) are installed inside the barrel body (11).

6. The rotary kiln with the intermediate air intake device as claimed in claim 5, wherein: the air inlet bin assembly (34) comprises an outer air bin (341), an inner air bin (342) and an air inlet channel (343), the outer air bin (341) is installed outside the barrel body (11), the inner air bin (342) is embedded into the barrel body (11), and one end of the air inlet channel (343) is connected with one end of the outer air bin (341) and is connected with the inner air bin (342).

7. The rotary kiln with the intermediate air intake device as claimed in claim 5, wherein: the axial sealing component (35) comprises a sealing rope (351), an axial self-tightening compression device (352), a secondary sealing scale (353), a pressure-regulating movable door (354) and a sealing cabin body (355), the sealing rope (351) is wound on the outer side wall of the cylinder body (11) along the radial direction of the cylinder body (11), the axial self-tightening compression device (352) is arranged on the cylinder body (11), the side edge of the sealing bin body (355) is propped against the sealing rope (351), the sealing bin body (355) is arranged on the side edge of the sealing bin body shell (32), one side of the sealing bin body shell is contacted with the sealing bin body shell (32), the other side of the sealing bin body shell is contacted with the outer side wall of the barrel body (11), the axial self-tightening compression device (352) is positioned inside the sealed cabin body (355), the pressure regulating movable door (354) is arranged on the side edge of the sealed cabin body (355), one end of the secondary sealing scale (353) is connected with the pressure regulating movable door (354), and the other end of the secondary sealing scale is connected with the outer side edge of the cylinder body (11).

8. The rotary kiln with the intermediate air intake device as claimed in claim 7, wherein: the axial self-tightening compression device (352) comprises a fixed block (3521), a guide post (3522), a spring (3523), a movable plate (3524) and a top block (3525), wherein the side edge of the fixed block (3521) is installed on the inner wall of a sealed cabin body (355), the bottom of the fixed block (3521) is installed in a guide groove of the top block (3525), the top of the top block (3525) is contacted with a sealing rope (351), the guide post (3522) is fixedly connected to the side edge of the fixed block (3521), a round hole is formed in the movable plate (3524), the guide post (3522) penetrates through the round hole, the bottom side of the movable plate (3524) is fixedly connected with the side edge of the top block (3525), and the spring (3523) is connected between the top end of the guide post (3522) and the movable plate (3524.

9. The rotary kiln with the intermediate air intake device as claimed in claim 5, wherein: the blast cap assembly (36) comprises a blast cap (361), an air pipe (362) and a base (363), wherein the blast cap (361) is installed at one end of the air pipe (362), the base (363) is installed at the other end of the air pipe (362), both ends of the air pipe (362) are provided with trapezoidal outer pipe threads, the base (363) is installed on the inner wall of the cylinder body (11), and the connection mode is pipe thread connection.

10. The rotary kiln with the intermediate air intake device according to claim 1, wherein: feed arrangement (4) include feed inlet (41), discharge gate (42), cavity (43), air-supply line (44), steel structure support (45) and inspection door (46), feed inlet (41) are located cavity (43) top, and discharge gate (42) are located cavity (43) left side limit, and air inlet channel (343) are located cavity (43) right side limit, steel structure support (45) are located cavity (43) below, and inspection door (46) are located cavity (43) upper portion side limit.