CN211527068U

CN211527068U - Rotary kiln with air supplementing channel

Info

Publication number: CN211527068U
Application number: CN202020102073.2U
Authority: CN
Inventors: 吴辉鹏
Original assignee: Henan Boxin Hi Tech Industrial Co ltd
Current assignee: Henan Jinduo New Material Co.,Ltd.
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-09-18
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to a rotary kiln with air supplement channel, it includes kiln hood cover, the kiln body and kiln hood, kiln hood cover left side top is provided with the air supplement channel, air supplement channel below is provided with the combustor interface, be provided with third sealing device below the combustor interface, third sealing device left side is provided with the connector, the connector left side is provided with coal injection device, kiln hood cover right side is provided with the tuber pipe, the tuber pipe right side is provided with the cooling ring canal, cooling ring canal right side is provided with the kiln body, kiln body right-hand member is provided with connecting device, connecting device right side is provided with the kiln hood, kiln hood top middle part is provided with the exhaust gas port, kiln hood front below is provided with the observation window, kiln hood right side is provided with feed arrangement, feed arrangement below is provided with the electric cabinet, electric cabinet below is provided with kiln hood base; the utility model has the advantages of reasonable structure, material return prevention, corrosion avoidance, high combustion efficiency and prolonged service life.

Description

Rotary kiln with air supplementing channel

Technical Field

The utility model belongs to the technical field of the rotary kiln, concretely relates to rotary kiln with mend wind passageway.

Background

The rotary kiln is a rotary calcining kiln (commonly called rotary kiln), belongs to building material equipment, and can be divided into a cement kiln, a metallurgical chemical kiln and a lime kiln according to different materials to be treated, the rotary kiln is formed by processes of gas flow, fuel combustion, heat transfer, material movement and the like, the rotary kiln can enable fuel to be fully combusted, the heat generated by fuel combustion can be effectively transferred to the materials, the materials are subjected to heat and then generate a series of physical and chemical changes, and finally finished clinker is formed, but the problems of corrosion of a feeding device, insufficient combustion, material return and the like caused by the fact that a related air supplementing channel is not arranged in the conventional rotary kiln; therefore, it is necessary to provide a rotary kiln with an air supply channel, which has the advantages of reasonable structure, material return prevention, corrosion prevention, high combustion efficiency and prolonged service life.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and providing a rotary kiln with an air supplementing channel, which has the advantages of reasonable structure, material returning prevention, corrosion prevention, high combustion efficiency and prolonged service life.

The purpose of the utility model is realized like this: the utility model provides a rotary kiln with mend wind passageway, it includes kiln hood cover, kiln body and kiln hood, its characterized in that: an air supplementing channel is arranged above the left side of the kiln hood cover, an air supplementing opening is arranged at the top of the air supplementing channel, a burner interface is arranged below the air supplementing channel, a third sealing device is arranged below the burner interface, a connector is arranged on the left side of the third sealing device, a coal injection device is arranged on the left side of the connector, a coal inlet is arranged on the left side of the coal injection device, a kiln hood cover supporting seat is arranged below the kiln hood cover, wheels are arranged on the left side and the right side below the kiln hood cover supporting seat, a kiln hood cover base is arranged below the wheels, an air pipe is arranged on the right side of the kiln hood cover, a cooling ring pipe is arranged on the right side of the air pipe and communicated with the cooling ring pipe through a connecting pipe, a kiln body is arranged on the right side of the cooling ring pipe and installed inside the kiln hood cover through the cooling ring pipe and the air pipe, an air collecting box is arranged above the interior of the kiln head cover, an air supplementing channel is communicated with the air collecting box, a first valve is arranged in the middle of the right side of the air collecting box and communicated with an air pipe, a second valve is arranged in the middle of the lower portion of the air collecting box, a curved pipe is arranged below the second valve, an air supplementing opening is arranged on the right side of the curved pipe, the curved pipe penetrates through the interior of the kiln body and is tightly attached to the inner wall of the kiln body, a second kiln body base is arranged on the right side of the kiln head cover base, a second riding wheel supporting seat is arranged above the second kiln body base, a second riding wheel is arranged in the middle of the upper portion of the second riding wheel supporting seat, a second rolling ring is arranged above the second riding wheel and fixed on the kiln body in a welding mode, the second riding wheel is connected with the second rolling ring through a second wheel belt, a first body base is arranged on the right side of the second kiln body base, the kiln comprises a first kiln body, a motor supporting seat is arranged above the left end of a base of the first kiln body, a driving motor is arranged above the motor supporting seat, a gearbox is arranged on the right side of the driving motor, the driving motor is connected with the gearbox through a second rotating shaft, a gearbox is arranged on the right side of the gearbox, a gearbox supporting seat is arranged below the gearbox, a pinion is arranged in the gearbox, the gearbox is connected with the pinion through a first rotating shaft, a gear wheel is arranged above the pinion, the gear wheel is arranged on the kiln body, a first riding wheel supporting seat is arranged on the right side of the gearbox supporting seat, a first riding wheel is arranged in the middle of the upper part of the first riding wheel supporting seat, a first rolling ring is arranged above the first riding wheel, the first rolling ring is fixed on the kiln body in a welding mode, and the first riding wheel is connected with the first rolling ring through a first wheel belt, the kiln body right-hand member be provided with connecting device, the kiln body pass through second sealing device and connecting device intercommunication, the connecting device right side be provided with the kiln tail cover, kiln tail cover top middle part be provided with the waste gas mouth, the preceding below of kiln tail cover be provided with the observation window, kiln tail cover right side be provided with feed arrangement, feed arrangement be connected with the kiln tail cover through first sealing device, feed arrangement top middle part be provided with the feed inlet, the inside left side of feed arrangement be provided with the feeder, the feeder left side be provided with the feed head, feeder and feed head run through first sealing device, kiln tail cover, second sealing device and connecting device and get into the kiln body inside, feed arrangement below be provided with the electric cabinet, electric cabinet below be provided with kiln tail cover base.

The second rolling ring, the second wheel belt, the second riding wheel and the second riding wheel supporting seat are the same as the first rolling ring, the first wheel belt, the first riding wheel and the first riding wheel supporting seat in size, structure, installation mode and the like, and are installed at the left-right symmetrical positions of the large gear.

The kiln body is formed by welding or riveting steel plates, a certain inclination angle is formed between the kiln body and the horizontal plane, refractory bricks are arranged inside the kiln body, the kiln tail cover is arranged at one end with the high kiln body, the kiln head cover is arranged at one end with the low kiln body, refractory materials are paved on the inner linings of the kiln head cover and the kiln tail cover, and corresponding sealing devices are arranged at the joints between the kiln head cover and the kiln body.

The big gear is arranged at a position close to the middle part of the kiln body, and the connection mode of the big gear and the kiln body adopts one of tangential connection and axial connection.

And corresponding locking devices are arranged on the wheels and the kiln head cover base.

The central lines of the big gear and the small gear are parallel, and the small gear can be arranged right below the big gear or obliquely below the big gear.

The electric control box is electrically connected with a power supply, and the electric control box is respectively electrically connected with the gearbox, the driving motor, the feeder, the first valve and the second valve.

The gearbox is a GV (H) 28-400W-type gearbox, the driving motor is an ZSN 4-type motor, the feeder is a YJDA-type feeder, and the first valve and the second valve are both TD 941W-type valves.

The utility model has the advantages that: the utility model relates to a rotary kiln with air supply channel, in the working process of the rotary kiln, if the air supply is needed to the rotary kiln, an air supply device is communicated with the air supply channel through an air supply opening and gathered in an air collection box, then a second valve is opened through an electric cabinet, the air enters into a curved pipe, the air supply is carried out to the kiln body through an air outlet, because the volume of the second valve is smaller than the volume of the air collection box, when the air enters into the curved pipe from the air collection box, the air pressure is increased, when the air is blown to the inside of the kiln body through the air outlet, the air supply can be increased to be contacted with materials, the combustion-supporting air quantity is reduced, the fuel consumption is reduced, the generation quantity of nitrogen oxides is reduced, the environment is more friendly, the air pressure is increased, the air supply can blow up the materials when the air advances in the kiln body, the combustion efficiency is increased, the materials are prevented from being stuck to, the kiln head cover has the advantages that the cost is saved, the kiln head cover is more convenient to move due to the adoption of the structure of the wheels below the kiln head cover, the assembly speed of the kiln head cover and a kiln body is increased, the working efficiency is improved, the wheels and the kiln head cover can be locked on the kiln head cover base due to the arrangement of the corresponding locking devices on the wheels and the kiln head cover base, the problems of shaking, sliding and the like can be avoided during working, and the whole working process is more stable and safer; the utility model has the advantages of reasonable structure, material return prevention, corrosion avoidance, high combustion efficiency and prolonged service life.

Drawings

Fig. 1 is a schematic view of the whole structure of a rotary kiln with an air supply channel.

Fig. 2 is a schematic view of the whole structure of the kiln head cover of the rotary kiln with an air supply channel.

Fig. 3 is a schematic view of the internal structure of the kiln tail cover of the rotary kiln with the air supply passage.

Fig. 4 is a schematic view of the internal structure of a kiln head cover of a rotary kiln with an air supply channel.

Fig. 5 is a schematic view of the internal partial structure of the kiln head cover of the rotary kiln with an air supply passage.

Fig. 6 is a schematic view of a transmission mechanism formed by a driving motor and a gearbox of the rotary kiln with an air supplementing channel.

In the figure: 1. the kiln head cover 2, the kiln tail cover 3, the kiln body 4, the feeding device 5, the feeding hole 6, the first sealing device 7, the observation window 8, the waste gas port 9, the electric cabinet 10, the kiln tail cover base 11, the connecting device 12, the second sealing device 13, the first rolling ring 14, the first wheel belt 15, the first riding wheel 16, the first riding wheel supporting seat 17, the first kiln body base 18, the big gear 19, the gear box 20, the small gear 21, the gear box supporting seat 22, the gear box 23, the driving motor 24, the motor supporting seat 25, the second rolling ring 26, the second wheel belt 27, the second riding wheel 28, the second riding wheel supporting seat 29, the second kiln body base 30, the kiln head cover supporting seat 31, the wheels 32, the head cover base 33, the coal injection device 34, the burner interface 35, the air supplement channel 36, the connecting pipe 37, The device comprises a cooling ring pipe 38, a feeder 39, a feeding head 40, an air supplementing opening 41, a coal inlet 42, a connector 43, a third sealing device 44, an air collecting box 45, a first valve 46, an air pipe 47, a second valve 48, a bent pipe 49, an air outlet 50, a first rotating shaft 51 and a second rotating shaft.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1

As shown in fig. 1-6, a rotary kiln with an air supply channel comprises a kiln head cover 1, a kiln body 3 and a kiln tail cover 2, wherein an air supply channel 35 is arranged above the left side of the kiln head cover 1, an air supply port 40 is arranged at the top of the air supply channel 35, a burner interface 34 is arranged below the air supply channel 35, a third sealing device 43 is arranged below the burner interface 34, a connector 42 is arranged on the left side of the third sealing device 43, a coal injection device 33 is arranged on the left side of the connector 42, a coal inlet 41 is arranged on the left side of the coal injection device 33, a kiln head cover supporting seat 30 is arranged below the kiln head cover 1, wheels 31 are arranged on the left and right sides below the kiln head cover supporting seat 30, a kiln head cover base 32 is arranged below the wheels 31, an air pipe 46 is arranged on the right side of the kiln head cover 1, and a cooling ring pipe 37 is arranged on the right side of the air pipe 46, the air pipe 46 is communicated with the cooling ring pipe 37 through the connecting pipe 36, the kiln body 3 is arranged on the right side of the cooling ring pipe 37, the kiln body 3 penetrates through the cooling ring pipe 37 and is installed inside the kiln head cover 1 with the air pipe 46, the air collecting box 44 is arranged above the inside of the kiln head cover 1, the air supplementing channel 35 is communicated with the air collecting box 44, the first valve 45 is arranged in the middle of the right side of the air collecting box 44, the first valve 45 is communicated with the air pipe 46, the second valve 47 is arranged in the middle of the lower part of the air collecting box 44, the curved pipe 48 is arranged below the second valve 47, the air outlet 49 is arranged on the right side of the curved pipe 48, the curved pipe 48 penetrates through the inside of the kiln body 3 and is tightly attached to the inner wall of the kiln body 3, the second kiln body base 29 is arranged on the right side of the kiln head cover base 32, the second supporting seat 28 for supporting wheels is arranged above, a second riding wheel 27 is arranged in the middle above a second riding wheel support seat 28, a second rolling ring 25 is arranged above the second riding wheel 27, the second rolling ring 25 is fixed on the kiln body 3 in a welding mode, the second riding wheel 27 is connected with the second rolling ring 25 through a second wheel belt 26, a first kiln body base 17 is arranged on the right side of a second kiln body base 29, a motor support seat 24 is arranged above the left end of the first kiln body base 17, a driving motor 23 is arranged above the motor support seat 24, a gearbox 22 is arranged on the right side of the driving motor 23, the driving motor 23 is connected with the gearbox 22 through a second rotating shaft 51, a gearbox 19 is arranged on the right side of the gearbox 22, a gearbox support seat 21 is arranged below the gearbox 19, a pinion 20 is arranged inside the gearbox 19, and the gearbox 22 is connected with the pinion 20 through a first rotating shaft 50, a large gear 18 is arranged above the small gear 20, the large gear 18 is arranged on the kiln body 3, a first riding wheel support seat 16 is arranged on the right side of a gear box support seat 21, a first riding wheel 15 is arranged in the middle of the upper part of the first riding wheel support seat 16, a first rolling ring 13 is arranged above the first riding wheel 15, the first rolling ring 13 is fixed on the kiln body 3 in a welding mode, the first riding wheel 15 is connected with the first rolling ring 13 through a first wheel belt 14, a connecting device 11 is arranged at the right end of the kiln body 3, the kiln body 3 is communicated with the connecting device 11 through a second sealing device 12, a kiln tail cover 2 is arranged on the right side of the connecting device 11, a waste gas port 8 is arranged in the middle of the upper part of the kiln tail cover 2, an observation window 7 is arranged below the front part of the kiln tail cover 2, and a feeding device 4 is arranged on the right side of the kiln tail cover 2, the feeding device 4 is connected with the kiln tail cover 2 through the first sealing device 6, a feeding hole 5 is formed in the middle of the upper portion of the feeding device 4, a feeder 38 is arranged on the left side inside the feeding device 4, a feeding head 39 is arranged on the left side of the feeder 38, the feeder 38 and the feeding head 39 penetrate through the first sealing device 6, the kiln tail cover 2, the second sealing device 12 and the connecting device 11 to enter the kiln body 3, an electric cabinet 9 is arranged below the feeding device 4, and a kiln tail cover base 10 is arranged below the electric cabinet 9.

The utility model relates to a rotary kiln with air supply channel, in the rotary kiln working process, if need to supply air to the rotary kiln, the air supply device is communicated with the air supply channel 35 through an air supply port 40, the air supply device gathers in an air collecting box 44, then a second valve 47 is opened through an electric cabinet 9, the air enters a curved pipe 48, the air is supplied to the kiln body 3 through an air outlet 49, because the volume of the second valve 47 is smaller than that of the air collecting box 44, when the air enters the curved pipe 48 from the air collecting box 44, the air pressure is increased, when the air is blown into the kiln body 3 through the air outlet 49, the air supply can be increased to contact with materials, the combustion air quantity is reduced, the fuel consumption is reduced, the nitrogen oxide production is reduced, the environment is more friendly, the air pressure is increased, the air supply can be blown up by the materials when the air advances in the kiln body 3, the combustion efficiency is increased, the materials are prevented from being stuck on the wall, the corrosion to the, the service life of the kiln body 3 is prolonged, the cost is saved, the structure of the wheels 31 is adopted below the kiln head cover 1, so that the kiln head cover 1 can be moved more conveniently, the assembly speed of the kiln head cover 1 and the kiln body 3 is increased, the working efficiency is improved, the wheels 31 and the kiln head cover base 32 are provided with corresponding locking devices, the wheels 31, the kiln head cover 1 and other devices can be locked on the kiln head cover base 32, the problems of shaking, sliding and the like can not occur during working, and the whole working process is more stable and safer; the utility model has the advantages of reasonable structure, material return prevention, corrosion avoidance, high combustion efficiency and prolonged service life.

Example 2

For better effect, the second rolling ring 25, the second roller belt 26, the second riding wheel 27 and the second riding wheel support 28 are the same as the first rolling ring 13, the first roller belt 14, the first riding wheel 15 and the first riding wheel support 16 in size, structure, installation mode and the like, and are installed at left-right symmetrical positions relative to the large gear 18, wherein the rolling ring part is formed by casting molten steel, the kiln body 3 of the rolling ring part bears the weight, so that the steel plate is slightly thicker than the steel plate of the kiln body 3 of other parts, the riding wheels correspond to the inner rings of the rolling rings on the rolling rings and are connected with corresponding support seats, and the bearing supports of the whole rotary kiln are provided, and the symmetrical structures are arranged for the whole balanced stress of the kiln body 3, so that the kiln body 3 is more stable in operation.

In order to have better effect, the kiln body 3 is formed by welding or riveting steel plates, and forms a certain inclination angle with the horizontal plane, and the interior of the kiln body 3 is provided with refractory bricks, the kiln tail cover 2 is arranged at one end of the kiln body 3, the kiln head cover 1 is arranged at the lower end of the kiln body 3, the linings of the kiln head cover 1 and the kiln tail cover 3 are both paved with refractory materials, and the joints between the kiln bodies 3 and the kiln tail hood 2 are provided with corresponding sealing devices, the kiln head hood 1 is lower than the kiln tail hood 2 so as to lead the materials to move forwards under the action of the inclined force, meanwhile, when the kiln body 3 rotates freely, the materials can rotate along with the kiln body 3 to be fully calcined, the refractory materials are paved, and the corresponding sealing device is arranged for avoiding unnecessary heat loss and effectively improving the working efficiency of the rotary kiln, and the refractory bricks are arranged in the kiln body 3 for protecting the cylinder body and reducing heat loss.

In order to achieve better effect, the large gear 18 is arranged at a position close to the middle of the kiln body 3, the connection mode of the large gear 18 and the kiln body 3 adopts one of tangential connection and axial connection, and the large gear 18 is arranged at a position close to the middle of the kiln body 3 so as to enable the kiln body 3 to be stressed uniformly and to be far away from a hot end in operation and to have less dust; tangential connection: the bull gear 18 is fixed on the spring board of the kiln body 3 tangential direction, the spring board generally uses 20-30mm thick steel plate, the width is equal to bull gear 18, one end becomes tangent line and fixes with backing plate and kiln body 3 together, one end is combined together with bull gear 18 with the bolt, the joint can insert the backing plate, can adjust the centre of bull gear 18 and kiln body 3 central position like this, make it align, this kind of connection, have greater elasticity, can reduce because of kiln body 3 crooked or impact to big, pinion when starting/stopping impact, the disadvantage is that it is difficult to mount, the centre is difficult to find, the gear is difficult to make; axial connection: the big gear 18 is fixed on an elastic steel plate parallel to the kiln body 3, a backing plate seat is arranged on the kiln body 3 for two circles, the distance between the two circles is 1.4-1.8m, the middle frame is provided with 8-15 elastic steel plates which are fixed on the kiln body 3 together with the backing plate by rivets, and the big gear 18 is fixed on the steel plate by screws, the connection mode has the advantages of simple manufacture, easy installation and surface-adjustable use of the big gear 18, and the defect is that the elasticity degree is poor when power is transmitted; in the actual installation process, the installation mode can be selected according to the actual situation.

For better effect, wheel 31 and kiln hood base 32 on be provided with corresponding locking device, be in order to can with devices such as wheel 31 and kiln hood 1 lock on kiln hood base 32, can not appear rocking, slip, landing scheduling problem at the during operation for whole course of work is more steady, safer.

For better effect, the central lines of the big gear 18 and the small gear 20 should be kept parallel, the small gear 20 can be installed right below the big gear 18, or obliquely below, when installed right below, the acting force of the two gears makes the bearing anchor bolt of the small gear 20 bear larger horizontal thrust; when the rotary kiln is arranged right below the rotary kiln, the small gear 20 generates a force pushing the kiln body upwards, so that the horizontal pushing force on the foundation bolt of the bearing of the small gear 20 is reduced, the rotary kiln is not pulled, and the maintenance and the improvement of the working condition of the transmission device are facilitated; therefore, the pinion 20 is generally installed obliquely below the bull gear 18, the speed ratio of the bull gear and the pinion is generally 5-7, i.e. the pinion 20 works 6 times more than the bull gear 18, therefore, the bull gear 18 is made of 45 cast steel, and the pinion 20 is made of 50 forged steel, so that the wear of the two is balanced.

For better effect, the electric control box 9 is electrically connected with a power supply, and the electric control box 9 is respectively and electrically connected with the gearbox 22, the driving motor 23, the feeder 38, the first valve 45 and the second valve 47.

For better effect, the gearbox 22 is a gv (h) 28-400W-type gearbox, the driving motor 23 is an ZSN 4-type motor, the feeder 38 is a YJDA-type feeder, the first valve 45 and the second valve 47 are both TD 941W-type valves, and the gv (h) 28-400W-type gearbox is used for continuously changing the transmission ratio, so that the gearbox is better matched with the driving motor 23 and has higher transmission efficiency; the YJDA type feeder is adopted for uniform feeding and stable and reliable operation; the purpose of using the TD941W valve is to make it easy to control and have high sensitivity.

The utility model relates to a rotary kiln with air supply channel, kiln body 3 and level become certain inclination, and can the free rotation, the kiln tail is high, the kiln head is low, in rotary kiln working process, material and fuel get into from the different ends of kiln body 3 respectively, namely the material gets into from the high-end kiln tail of kiln body 3, fuel is spouted from the kiln head, along with the slope and the slow gyration of kiln body 3, the material not only rolls along the circumferencial direction under the effect of inclination, but also moves from the high end to the low end along the axial, therefore, the material can be fully calcined in kiln body 3, kiln body 3 is lined with firebrick, in order to protect kiln body 3 and reduce the heat loss, kiln head cover 1 and kiln tail cover 2 inside lining all have spread refractory material, and all with kiln body 3 between the junction be provided with sealing device, in order to avoid the heat to have unnecessary loss, kiln head cover 1 is provided with coal-spraying device 33 and is used for installing the combustor interface 34 of combustor, after coal powder is ground by a coal mill, the fine coal powder is conveyed to a coal injection device 33 through special conveying equipment and then injected into a kiln body, the fine coal powder is matched with a burner to be combusted, so that heat of a main source of the whole rotary kiln is provided for the rotary kiln, meanwhile, fuel is conveyed to a kiln tail from a kiln head under the action of wind power and the coal injection device 33, waste gas generated by combustion is exchanged with materials and then is discharged from a waste gas port 8 on a kiln tail cover 3 to be correspondingly treated, finally, generated clinker enters a cooler through a kiln head cover 1 to be cooled, the calcination work of the materials is completed, in the working process of the rotary kiln, if wind is needed to be supplemented to the rotary kiln, a wind supplementing device is communicated with a wind supplementing channel 35 through a wind supplementing port 40 and is gathered in a wind collecting box 44, then a second valve 47 is opened through an electric cabinet 9, wind enters a bent pipe 48, and is supplemented to the kiln body 3 through a wind outlet 49, because the volume of the second valve 47 is smaller than that of the air collecting box 44, when air enters the curved pipe 48 from the air collecting box 44, the air pressure is increased, when the air is blown into the kiln body 3 through the air outlet 49, the contact between the air supplement and the material can be increased, the quantity of combustion-supporting air is reduced, the air pressure is increased, the air supplement can rotate and advance in the kiln body 3 to blow up the material, the combustion efficiency is increased, the material is prevented from being stuck to the wall, the corrosion to the interior of the kiln body 3 is avoided, and the service life of the kiln body 3 is prolonged; when the generated clinker enters a cooling machine for cooling through the kiln head cover 1, the second valve 47 is closed through the electric cabinet 9, the first valve 45 is opened, and at this time, air enters the air pipe 46 and the cooling ring pipe 37 to cool the head parts of the kiln head cover 1 and the kiln body 3, so that the kiln body 3 is prevented from being damaged by overheating; the utility model has the advantages of reasonable structure, material return prevention, corrosion avoidance, high combustion efficiency and prolonged service life.

Claims

1. The utility model provides a rotary kiln with mend wind passageway, it includes kiln hood cover, kiln body and kiln hood, its characterized in that: an air supplementing channel is arranged above the left side of the kiln hood cover, an air supplementing opening is arranged at the top of the air supplementing channel, a burner interface is arranged below the air supplementing channel, a third sealing device is arranged below the burner interface, a connector is arranged on the left side of the third sealing device, a coal injection device is arranged on the left side of the connector, a coal inlet is arranged on the left side of the coal injection device, a kiln hood cover supporting seat is arranged below the kiln hood cover, wheels are arranged on the left side and the right side below the kiln hood cover supporting seat, a kiln hood cover base is arranged below the wheels, an air pipe is arranged on the right side of the kiln hood cover, a cooling ring pipe is arranged on the right side of the air pipe and communicated with the cooling ring pipe through a connecting pipe, a kiln body is arranged on the right side of the cooling ring pipe and installed inside the kiln hood cover through the cooling ring pipe and the air pipe, an air collecting box is arranged above the interior of the kiln head cover, an air supplementing channel is communicated with the air collecting box, a first valve is arranged in the middle of the right side of the air collecting box and communicated with an air pipe, a second valve is arranged in the middle of the lower portion of the air collecting box, a curved pipe is arranged below the second valve, an air supplementing opening is arranged on the right side of the curved pipe, the curved pipe penetrates through the interior of the kiln body and is tightly attached to the inner wall of the kiln body, a second kiln body base is arranged on the right side of the kiln head cover base, a second riding wheel supporting seat is arranged above the second kiln body base, a second riding wheel is arranged in the middle of the upper portion of the second riding wheel supporting seat, a second rolling ring is arranged above the second riding wheel and fixed on the kiln body in a welding mode, the second riding wheel is connected with the second rolling ring through a second wheel belt, a first body base is arranged on the right side of the second kiln body base, the kiln comprises a first kiln body, a motor supporting seat is arranged above the left end of a base of the first kiln body, a driving motor is arranged above the motor supporting seat, a gearbox is arranged on the right side of the driving motor, the driving motor is connected with the gearbox through a second rotating shaft, a gearbox is arranged on the right side of the gearbox, a gearbox supporting seat is arranged below the gearbox, a pinion is arranged in the gearbox, the gearbox is connected with the pinion through a first rotating shaft, a gear wheel is arranged above the pinion, the gear wheel is arranged on the kiln body, a first riding wheel supporting seat is arranged on the right side of the gearbox supporting seat, a first riding wheel is arranged in the middle of the upper part of the first riding wheel supporting seat, a first rolling ring is arranged above the first riding wheel, the first rolling ring is fixed on the kiln body in a welding mode, and the first riding wheel is connected with the first rolling ring through a first wheel belt, the kiln body right-hand member be provided with connecting device, the kiln body pass through second sealing device and connecting device intercommunication, the connecting device right side be provided with the kiln tail cover, kiln tail cover top middle part be provided with the waste gas mouth, the preceding below of kiln tail cover be provided with the observation window, kiln tail cover right side be provided with feed arrangement, feed arrangement be connected with the kiln tail cover through first sealing device, feed arrangement top middle part be provided with the feed inlet, the inside left side of feed arrangement be provided with the feeder, the feeder left side be provided with the feed head, feeder and feed head run through first sealing device, kiln tail cover, second sealing device and connecting device and get into the kiln body inside, feed arrangement below be provided with the electric cabinet, electric cabinet below be provided with kiln tail cover base.

2. The rotary kiln with the air supply channel as claimed in claim 1, wherein: the second rolling ring, the second wheel belt, the second riding wheel and the second riding wheel supporting seat are the same as the first rolling ring, the first wheel belt, the first riding wheel and the first riding wheel supporting seat in size, structure, installation mode and the like, and are installed at the left-right symmetrical positions of the large gear.

3. The rotary kiln with the air supply channel as claimed in claim 1, wherein: the kiln body is formed by welding or riveting steel plates, a certain inclination angle is formed between the kiln body and the horizontal plane, refractory bricks are arranged inside the kiln body, the kiln tail cover is arranged at one end with the high kiln body, the kiln head cover is arranged at one end with the low kiln body, refractory materials are paved on the inner linings of the kiln head cover and the kiln tail cover, and corresponding sealing devices are arranged at the joints between the kiln head cover and the kiln body.

4. The rotary kiln with the air supply channel as claimed in claim 2, wherein: the big gear is arranged at a position close to the middle part of the kiln body, and the connection mode of the big gear and the kiln body adopts one of tangential connection and axial connection.

5. The rotary kiln with the air supply channel as claimed in claim 1, wherein: and corresponding locking devices are arranged on the wheels and the kiln head cover base.

6. The rotary kiln with the air supply channel as claimed in claim 1, wherein: the central lines of the big gear and the small gear are parallel, and the small gear can be arranged right below the big gear or obliquely below the big gear.

7. The rotary kiln with the air supply channel as claimed in claim 1, wherein: the electric control box is electrically connected with a power supply, and the electric control box is respectively electrically connected with the gearbox, the driving motor, the feeder, the first valve and the second valve.

8. The rotary kiln with the air supply channel as claimed in claim 7, wherein: the gearbox is a GV (H) 28-400W-type gearbox, the driving motor is an ZSN 4-type motor, the feeder is a YJDA-type feeder, and the first valve and the second valve are both TD 941W-type valves.