CN109357266B - Rotary kiln cooling system - Google Patents

Rotary kiln cooling system Download PDF

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Publication number
CN109357266B
CN109357266B CN201811143181.8A CN201811143181A CN109357266B CN 109357266 B CN109357266 B CN 109357266B CN 201811143181 A CN201811143181 A CN 201811143181A CN 109357266 B CN109357266 B CN 109357266B
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CN
China
Prior art keywords
rotary kiln
linkage
sliding seat
connector
connecting head
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CN201811143181.8A
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Chinese (zh)
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CN109357266A (en
Inventor
林辉荣
毛小英
黄爱军
彭汉贵
朱庆毅
谷军
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Xinzhongtian Environmental Protection Co ltd
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Xinzhongtian Environmental Protection Co ltd
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Priority to CN201811143181.8A priority Critical patent/CN109357266B/en
Publication of CN109357266A publication Critical patent/CN109357266A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/06—Mechanically-operated devices, e.g. clinker pushers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/20—Rotary drum furnace
    • F23G2203/208—Rotary drum furnace with interior agitating members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention belongs to the technical field of waste treatment, and particularly discloses a rotary kiln cooling system which comprises a switching pipe, a sliding seat, a water supply mechanism and a temperature control system, wherein the switching pipe is connected with the sliding seat; a linkage piston and a first driving rod are arranged on one side of the sliding seat, smoke passing openings are formed in the sliding seat and the linkage piston, and a pressure spring is arranged between the linkage piston and the sliding seat; the spraying mechanism comprises a first connecting head, a first linkage shaft and a first motor, and a first linkage hole is formed in the sliding seat; one side of the first connecting head, which is close to the rotary kiln, is provided with a plurality of nozzles, and the rotary kiln further comprises a temperature control system arranged in the rotary kiln and a water supply mechanism for supplying water to the nozzles. This rotary kiln cooling system is to rotary kiln cooling effect preferred.

Description

Rotary kiln cooling system
Technical Field
The invention belongs to the technical field of waste treatment, and particularly discloses a rotary kiln cooling system.
Background
The hazardous waste incineration system roughly comprises a feeding part, a combustion part (a rotary kiln and a secondary combustion chamber), a waste heat utilization part (a waste heat boiler and a quench tower) and an ash discharge and pollution discharge part, wherein the rotary kiln is made of a cylindrical steel plate body (the body is slightly inclined compared with the horizontal plane), and the secondary combustion chamber is arranged behind the rotary kiln. When burning, the rotary kiln rotates slowly to make the waste mix evenly and transfer along the inclined plane of the body. And burning the waste in a rotary kiln to generate high-temperature flue gas and molten residues, wherein the molten residues are discharged from the tail of the rotary kiln, and the high-temperature flue gas enters a secondary combustion chamber from the tail of the rotary kiln to be subjected to secondary combustion.
① when the rotary kiln works, because the waste components are complex and the melting point is different, when burning, the low melting point waste (such as glass and various packing materials) will melt when the temperature in the kiln is low, and along with the continuous increase of the temperature in the kiln, the low melting point waste will become more viscous in the kiln and will adhere to the rotary kiln to form a coking layer, when the coking layer reaches a certain thickness, the volume of the kiln tail of the rotary kiln will be reduced, thereby affecting the normal slag discharge of the rotary kiln and the feeding of the secondary combustion chamber, ② waste will generate a large amount of heat when burning in the rotary kiln, so the temperature in the kiln will rise rapidly, on one hand, when the temperature in the kiln is too high, the rotary kiln is easy to damage, shortening the service life of the rotary kiln, on the other hand, when the temperature in the kiln is too high, the generation of the.
In order to solve the problems, the rotary kiln needs to be provided with a cooling system, the existing cooling system is mostly arranged outside the rotary kiln (for example, on the upper part of the rotary kiln), and the rotary kiln is cooled in a spraying mode, and the cooling system has a poor cooling effect on the rotary kiln.
Disclosure of Invention
The invention aims to provide a rotary kiln cooling system with a better rotary kiln cooling effect.
In order to achieve the purpose, the basic scheme of the invention is as follows:
the rotary kiln cooling system comprises a switching tube and a sliding seat, wherein the switching tube is respectively communicated with the rotary kiln and the secondary combustion chamber, the sliding seat is connected in the switching tube in a sliding manner, the switching tube is hermetically and rotatably connected with the rotary kiln, a slag hole is formed in the bottom of the switching tube, and when the sliding seat abuts against the tail of the rotary kiln, the slag hole is blocked by the sliding seat;
a linkage piston and a first driving rod capable of driving the linkage piston to move are arranged on one side, close to the second combustion chamber, of the sliding seat, smoke passing openings are formed in the sliding seat and the linkage piston, and a pressure spring is arranged between the linkage piston and the sliding seat;
the spraying mechanism comprises a first connecting head, a first linkage shaft and a first motor, a first linkage hole is formed in the sliding seat, the first connecting head can be connected into the first linkage hole in a sliding mode, the first linkage shaft is connected with the linkage piston in a sealing and sliding mode, one end of the first linkage shaft is fixedly connected with the first connecting head, and the other end of the first linkage shaft is fixedly connected with an output shaft of the first motor; a plurality of nozzles are arranged on one side of the first connecting head, which is close to the rotary kiln; also comprises a temperature control system arranged in the rotary kiln and a water supply mechanism for supplying water to the nozzle.
The working principle and the beneficial effects of the basic scheme are as follows:
(1) because the working temperature of the secondary combustion chamber is higher than that of the rotary kiln, the coking phenomenon at the tail of the rotary kiln is the most serious under the influence of the secondary combustion chamber, and the cooling system is arranged between the secondary combustion chamber and the rotary kiln, so that the rotary kiln can be cooled in time, the rotary kiln can be protected, and the generation speed of a coking layer can be greatly reduced. Practice proves that the cooling system can ensure that the rotary kiln stably and continuously operates for more than 300 days, and greatly reduces the overhaul cost of the rotary kiln.
(2) The method comprises the steps of arranging a sliding seat, a linkage piston, a pressure spring, a first driving rod, a spraying mechanism and a temperature control system, ① controlling the first driving rod to move towards the direction close to the rotary kiln when the temperature in the rotary kiln is within a preset range, enabling the sliding seat to abut against the tail of the rotary kiln through the linkage piston and the pressure spring, plugging a slag hole by the sliding seat, simultaneously pulling a second driving block to enable the first connecting head to be located in a first linkage hole to ensure that waste incineration in the rotary kiln is not influenced by the first connecting head, ② controlling a temperature control system to send an over-temperature signal when the temperature in the rotary kiln is higher than a preset value, on one hand, starting a first motor to work, enabling the first motor to drive the first connecting head to rotate through a first linkage shaft, on the other hand, controlling a water supply mechanism to supply water to nozzles to enable water to be sprayed out of the nozzles in a rotating mode, cooling the inner side wall of the rotary kiln, enabling part of water sprayed out of the nozzles to be in contact with the waste, slowing down the combustion speed of the waste.
Furthermore, the number of the spraying mechanisms is two, the two spraying mechanisms are symmetrical along the vertical central line of the adapter tube, the two spraying mechanisms are arranged at the upper part of the adapter tube, and the spray nozzle deflects towards the direction far away from the center of the first connector; a rolling gap is formed between the two spraying mechanisms, and the first connecting heads of the two spraying mechanisms rotate inwards relative to the rolling gap; the first connector is provided with an arc-shaped groove, the first connector is cylindrical, the first connector is hinged with a scraper, the shape of the outer edge of the scraper is the same as that of the outer edge of the first connector, the scraper can only swing towards the center far away from the first connector, and a tension spring is arranged between the scraper and the arc-shaped groove.
After wastes are burned in the rotary kiln for a period of time, the second driving block is pulled to enable the first connecting head to move into the kiln tail of the rotary kiln, the first motor is started, the first motor drives the first connecting head to rotate through the first linkage shaft, when a scraper of the first connecting head rotates to the position below the first connecting head, the free end of the scraper swings towards the center far away from the first connecting head, and under the action of a tension spring, the scraper scrapes a coking layer and residues attached to the kiln tail of the rotary kiln into the arc-shaped groove. Because the scraper can only swing towards keeping away from first connector center, when the scraper of first connector rotated to rolling the clearance afterwards, the coking layer in the arc wall and residue fell in rolling the clearance, and the relative first connector edge rolls coking layer and residue, and waste slagging scorification or "cohesion" influence the abundant burning of waste material when preventing to burn. In addition, when the rotary kiln rotates, wastes are positioned at the bottom of the rotary kiln, the two spraying mechanisms are arranged at the upper part of the adapter tube, water sprayed from the nozzles can be in full contact with a rotary kiln cylinder body rotating to the upper part, and the cooling effect of the cooling system on the rotary kiln is further ensured.
Furthermore, a rotating part is arranged below the two spraying mechanisms, the rotating part and the two spraying mechanisms are arranged in the adapter tube in a regular triangle shape, the rotating part comprises a second connector, a second linkage shaft and a second motor, a second linkage hole is formed in the sliding seat, the second connector can be connected in the second linkage hole in a sliding mode, one end of the second linkage shaft is fixedly connected with the second connector, the other end of the second linkage shaft is fixedly connected with an output shaft of the second motor, and an arc-shaped groove, a scraper and a tension spring which are identical to the spraying mechanism in structure are arranged on the second connector; the linkage mechanism further comprises a second driving block capable of driving the first linkage shaft and the second linkage shaft to move. The rotating piece can scrape waste, a coking layer and residues which are deposited at the lower part of the kiln tail of the rotary kiln, so that the stirring effect is achieved, and the sufficient combustion of the waste is further promoted.
Furthermore, the water supply mechanism comprises a water inlet pipe, a first communicating pipe arranged in the linkage piston and a second communicating pipe arranged in the sliding seat, a water inlet cavity communicated with the nozzle is formed in the first connecting head and the first linkage shaft, only when the sliding seat is abutted against the kiln tail of the rotary kiln, and the pressure spring is compressed, the water inlet cavity can be communicated with the water inlet pipe through the first communicating pipe and the second communicating pipe in sequence. The water can be simply supplied to the nozzle through the water supply mechanism.
Further, a sealed collecting box is arranged below the slag outlet, an air guide pipe is arranged on the sealed collecting box, and one end of the air guide pipe is communicated with one side, close to the secondary combustion chamber, of the adapter pipe. To being close to the first actuating lever of second combustion chamber direction pulling, first actuating lever just can stimulate the slide holder through linkage piston and pressure spring and remove to being close to second combustion chamber direction, leak the slag notch until the slide, first connector and second connector will be burnt layer and residue and scrape, roll, and the translation rate at the rotary kiln tail with higher speed burnt layer and residue, the burnt layer that makes after rolling is sealed the collecting box fast with the residue and is unified and collect, flue gas that produces at this in-process gets into the second combustion chamber through the air duct and carries out abundant burning.
Further, the temperature control system is an infrared temperature measuring device. The infrared temperature measuring device can simply, quickly and accurately measure the temperature in the rotary kiln.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an embodiment of the invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
fig. 3 is a longitudinal sectional view of the embodiment of the present invention when cooling down.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the rotary kiln comprises a rotary kiln 1, a second combustion chamber 2, an adapter tube 3, a slag outlet 31, a slide seat 4, a linkage piston 51, a first driving rod 52, a pressure spring 53, a smoke passing port 54, a first connecting head 61, a first linkage shaft 62, a first motor 63, a second driving block 64, a nozzle 65, a rolling gap 66, an arc-shaped groove 67, a scraper 68, a tension spring 69, a first linkage hole 610, a second connecting head 71, a second linkage shaft 72, a second motor 73, a water inlet pipe 8, a first communicating pipe 81, a second communicating pipe 82, a water inlet cavity 83 and a sealed collection box 9.
As shown in fig. 1, 2 and 3, the rotary kiln cooling system comprises a transfer pipe 3 respectively communicated with a rotary kiln 1 and a second combustion chamber 2 and a slide seat 4 connected in the transfer pipe 3 in a sliding manner, the transfer pipe 3 is in an inclined shape with a high left and a low right, one end of the transfer pipe 3 is fixedly connected with the second combustion chamber 2, and the other end of the transfer pipe 3 is sleeved at the kiln tail of the rotary kiln 1 and is connected with the rotary kiln 1 in a sealing manner and in a rotating manner.
The longitudinal section of the slide seat 4 is Contraband type which opens towards the second combustion chamber 2, and the bottom of the adapter tube 3 is provided with a slag outlet 31. As shown in fig. 1, when the sliding seat 4 abuts against the kiln tail of the rotary kiln 1, the sliding seat 4 seals the slag outlet 31. A sealed collecting box 9 is arranged below the slag hole 31, an air guide pipe is arranged on the sealed collecting box 9, and one end of the air guide pipe is communicated with one side of the adapter pipe 3 close to the secondary combustion chamber 2.
One side of the sliding base 4 close to the second combustion chamber 2 is provided with a linkage piston 51 and a first driving rod 52 (the linkage piston 51 is welded with the first driving rod 52) capable of driving the linkage piston 51 to move, and one end of the first driving rod 52 penetrates out of one side of the second combustion chamber 2. A smoke outlet 54 is formed in the corresponding position of the sliding seat 4 and the linkage piston 51, the smoke outlet 54 can ensure that smoke generated by burning the rotary kiln 1 can smoothly enter the secondary combustion chamber 2), and a pressure spring 53 is arranged between the linkage piston 51 and the sliding seat 4.
The spraying device further comprises a spraying mechanism, the spraying mechanism comprises a first connecting head 61, a first linkage shaft 62 and a first motor 63, a first linkage hole 610 is formed in the sliding seat 4, the first connecting head 61 can be connected in the first linkage hole 610 in a sliding mode along the axis direction (such as the direction a in fig. 1) of the adapter tube 3, the first connecting head 61 is cylindrical, the first linkage hole 610 is a cylindrical hole, the inner diameter of the first linkage hole 610 is equal to the outer diameter of the first connecting head 61, the first linkage shaft 62 is connected with the linkage piston 51 in a sealing mode and in a rotating mode, one end of the first linkage shaft 62 is fixedly connected with the first connecting head 61, and the other end of the first linkage shaft 62 penetrates out of one side of the second combustion chamber 2 and is fixedly connected with an output shaft of the first motor 63; the first connection head 61 is provided with a plurality of nozzles 65 on a side thereof adjacent to the rotary kiln 1. The number of the spraying mechanisms is two, the two spraying mechanisms are symmetrical along the vertical central line of the adapter tube 3, the two spraying mechanisms are arranged at the upper part of the adapter tube 3, and the spray nozzle 65 deflects towards the direction far away from the center of the first connector 61; a rolling gap 66 is formed between the two spraying mechanisms, and the first connecting heads 61 of the two spraying mechanisms rotate inwards relative to the rolling gap 66; an arc-shaped groove 67 is formed in the first connecting head 61, a scraper 68 is hinged to the first connecting head 61, the shape of the outer edge of the scraper 68 is the same as that of the outer edge of the first connecting head 61, the scraper 68 can only swing away from the center of the first connecting head 61, a tension spring 69 is arranged between the scraper 68 and the arc-shaped groove 67, and as shown in fig. 2, the maximum swinging angle b of the scraper 68 is 60 °.
The rotating part is arranged below the two spraying mechanisms, the rotating part and the two spraying mechanisms are arranged in the adapter tube 3 in a regular triangle shape, the rotating part comprises a second connecting head 71, a second linkage shaft 72 and a second motor 73, a second linkage hole is formed in the sliding seat 4, the second connecting head 71 can be connected in the second linkage hole in a sliding mode (the second linkage hole is the same as the first linkage hole 610 in size and shape), one end of the second linkage shaft 72 is fixedly connected with the second connecting head 71, the other end of the second linkage shaft 72 penetrates out of one side of the secondary combustion chamber 2 and is fixedly connected with an output shaft of the second motor 73, and an arc-shaped groove 67 which is the same as the spraying mechanism in structure, a scraper 68 and a tension spring 69 are arranged on the second connecting head 71.
The device also comprises a second driving block 64 capable of driving the first linkage shaft 62 and the second linkage shaft 72 to move, and the first motor 63 and the second motor 73 are fixedly connected to the second driving block 64.
As shown in fig. 3, the rotary kiln further comprises a water supply mechanism for supplying water to the nozzle 65, the water supply mechanism comprises a water inlet pipe 8, a first communicating pipe 81 arranged in the linkage piston 51 and a second communicating pipe 82 arranged in the sliding seat 4, a water inlet cavity 83 communicated with the nozzle 65 is formed in the first connecting head 61 and the first linkage shaft 62, and only when the sliding seat 4 abuts against the kiln tail of the rotary kiln 1, and the pressure spring 53 is compressed, the water inlet cavity 83 can be sequentially communicated with the water inlet pipe 8 through the first communicating pipe 81 and the second communicating pipe 82 in a sealing manner.
The rotary kiln also comprises a temperature control system arranged in the rotary kiln 1, wherein the temperature control system preferred in the embodiment is an infrared hearth temperature measuring instrument with the model number of American Raybs211 YC.
The specific implementation process when adopting the cooling system is as follows:
(1) when the temperature in the kiln is within a preset range, the first driving rod 52 is controlled to move towards the direction close to the rotary kiln 1, the first driving rod 52 drives the sliding seat 4 to abut against the kiln tail of the rotary kiln 1 through the linkage piston 51 and the pressure spring 53, and at the moment, the sliding seat 4 seals the slag outlet 31; and then the second driving block 64 is pulled to enable the first connecting head 61 to be positioned in the first linkage hole 610, so that the first connecting head 61 can not influence the incineration of the wastes moving to the tail of the rotary kiln 1.
(2) When the temperature in the kiln is higher than the preset value, the infrared temperature measuring device sends out an overtemperature signal, and the cooling system starts to work. Pulling first actuating lever 52 (guarantee this moment that slide 4 offsets with rotary kiln 1 kiln tail all the time, pressure spring 53 is still in the compression, first actuating lever 52 can enough drive linkage piston 51 and remove promptly, and can not drive slide 4 through pressure spring 5 and remove), make inlet tube 8, second communicating pipe 82 in the slide 4 and first communicating pipe 81 and intake antrum 83 in the linkage piston 51 are sealed the intercommunication in proper order, let in the water that has certain pressure in the inlet tube 8, water is through inlet tube 8, kiln 82, first communicating pipe 81 and intake antrum 83 spout from nozzle 65, start first motor 63 this moment, first motor 63 drives first connecting head 61 through first universal driving shaft 62 and rotates, make water spout from nozzle 65 with rotatory mode, cool down the inside wall of rotary kiln 1 tail. The nozzle 65 deflects towards the direction away from the center of the first connector 61, which is helpful for contacting water with the inner side wall of the rotary kiln 1, and improves the cooling effect of the cooling system on the tail of the rotary kiln. In addition, when the rotary kiln 1 rotates, wastes are positioned at the bottom of the rotary kiln 1, the two spraying mechanisms are arranged at the upper part of the adapter tube 3, water sprayed out of the nozzles 65 can be in full contact with a rotary kiln 1 barrel rotating to the upper part, and the cooling effect of the cooling system on the rotary kiln 1 is further ensured.
(3) After the waste is burned in the rotary kiln 1 for a period of time, the second driving block 64 is pulled, and the second driving block 64 moves the first connecting head 61 into the kiln tail of the rotary kiln 1 through the first linkage shaft 62 and the second linkage shaft 72.
On one hand, the first motor 63 is kept to drive the first connecting head 61 to rotate through the first linkage shaft 62, and when the scraper 68 of the first connecting head 61 rotates below the first connecting head 61, the free end of the scraper 68 swings towards the center far away from the first connecting head 61 to scrape the coking layer and the residue attached to the kiln tail of the rotary kiln 1 into the arc-shaped groove 67. Since the scraper 68 can only swing away from the center of the first connecting head 61, then when the scraper 68 of the first connecting head 61 rotates to the rolling gap 66, the coking layer and the residues in the arc-shaped groove 67 fall to the rolling gap 66, and the opposite edge of the first connecting head 61 rolls the coking layer and the residues, so that the wastes are prevented from being slagged or "agglomerated" to influence the sufficient combustion of the wastes during incineration.
In addition, the second motor 73 drives the second connecting head 71 to rotate through the first linkage shaft 72, and the scrapers 68 on the second connecting head 71 can scrape waste, a coking layer and residues which are deposited at the lower part of the kiln tail of the rotary kiln 1, so that the stirring effect is achieved, and the sufficient combustion of the waste is further promoted.
(4) Discharging in the rotary kiln 1: the first driving rod 52 is pulled towards the direction close to the second combustion chamber 2, the first driving rod 52 pulls the slide seat 4 to move towards the direction close to the second combustion chamber 2 through the linkage piston 51 and the pressure spring 53 until the slide seat 4 leaks the slag outlet 31, at the moment, the coke layer and the residues are scraped and rolled by the first connector 61 and the second connector 71, the moving speed of the coke layer and the residues at the tail of the rotary kiln 1 is accelerated, and the rolled coke layer and the residues are rapidly sealed and collected in the collecting box 9. The flue gas produced in the discharging process enters the secondary combustion chamber 2 through the gas guide pipe to be fully combusted.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (4)

1. Rotary kiln cooling system, its characterized in that: the rotary kiln comprises a switching tube and a sliding seat, wherein the switching tube is respectively communicated with the rotary kiln and a secondary combustion chamber, the sliding seat is connected in the switching tube in a sliding manner, the switching tube is hermetically and rotatably connected with the rotary kiln, a slag hole is formed in the bottom of the switching tube, and when the sliding seat abuts against the kiln tail of the rotary kiln, the sliding seat seals the slag hole;
a linkage piston and a first driving rod capable of driving the linkage piston to move are arranged on one side, close to the second combustion chamber, of the sliding seat, smoke passing openings are formed in the sliding seat and the linkage piston, and a pressure spring is arranged between the linkage piston and the sliding seat;
the spraying mechanism comprises a first connecting head, a first linkage shaft and a first motor, a first linkage hole is formed in the sliding seat, the first connecting head can be connected into the first linkage hole in a sliding mode, the first linkage shaft is connected with the linkage piston in a sealing and sliding mode, one end of the first linkage shaft is fixedly connected with the first connecting head, and the other end of the first linkage shaft is fixedly connected with an output shaft of the first motor; a plurality of nozzles are arranged on one side of the first connecting head, which is close to the rotary kiln; the rotary kiln also comprises a temperature control system arranged in the rotary kiln and a water supply mechanism for supplying water to the nozzle; the number of the spraying mechanisms is two, the two spraying mechanisms are symmetrical along the vertical central line of the adapter tube, the two spraying mechanisms are arranged at the upper part of the adapter tube, and the spray nozzle deflects towards the direction far away from the center of the first connector; a rolling gap is formed between the two spraying mechanisms, and the first connecting heads of the two spraying mechanisms rotate inwards relative to the rolling gap; an arc-shaped groove is formed in the first connector, the first connector is cylindrical, a scraper is hinged to the first connector, the shape of the outer edge of the scraper is the same as that of the outer edge of the first connector, the scraper can only swing towards the position far away from the center of the first connector, and a tension spring is arranged between the scraper and the arc-shaped groove; the water supply mechanism comprises a water inlet pipe, a first communicating pipe arranged in the linkage piston and a second communicating pipe arranged in the sliding seat, a water inlet cavity communicated with the nozzle is formed in the first connecting head and the first linkage shaft, only when the sliding seat is abutted against the kiln tail of the rotary kiln, and the pressure spring is compressed, the water inlet cavity can be communicated with the water inlet pipe through the first communicating pipe and the second communicating pipe in sequence.
2. The rotary kiln cooling system as claimed in claim 1, wherein: a rotating part is arranged below the two spraying mechanisms, the rotating part and the two spraying mechanisms are arranged in the adapter tube in a regular triangle shape, the rotating part comprises a second connector, a second linkage shaft and a second motor, a second linkage hole is formed in the sliding seat, the second connector can be connected in the second linkage hole in a sliding mode, one end of the second linkage shaft is fixedly connected with the second connector, the other end of the second linkage shaft is fixedly connected with an output shaft of the second motor, and an arc-shaped groove, a scraper and a tension spring which are identical to the spraying mechanism in structure are arranged on the second connector; the linkage mechanism further comprises a second driving block capable of driving the first linkage shaft and the second linkage shaft to move.
3. The rotary kiln cooling system as claimed in claim 1, wherein: and a sealed collecting box is arranged below the slag outlet, an air guide pipe is arranged on the sealed collecting box, and one end of the air guide pipe is communicated with one side of the adapter pipe close to the secondary combustion chamber.
4. The rotary kiln cooling system as claimed in claim 3, wherein: the temperature control system is an infrared temperature measuring device.
CN201811143181.8A 2018-09-28 2018-09-28 Rotary kiln cooling system Active CN109357266B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811143181.8A CN109357266B (en) 2018-09-28 2018-09-28 Rotary kiln cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811143181.8A CN109357266B (en) 2018-09-28 2018-09-28 Rotary kiln cooling system

Publications (2)

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CN109357266A CN109357266A (en) 2019-02-19
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