CN216898331U

CN216898331U - Environment-friendly sintering system

Info

Publication number: CN216898331U
Application number: CN202123382973.0U
Authority: CN
Inventors: 王艳丽; 安卫春
Original assignee: Hebei Xinda Iron and Steel Group Co Ltd
Current assignee: Hebei Xinda Iron and Steel Group Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-05
Anticipated expiration: 2031-12-30

Abstract

The utility model provides an environment-friendly sintering system which comprises a sintering machine, an annular cooler and a feeding device for continuously providing biomass fuel balls into the sintering machine, wherein the feeding device comprises a straw cutting machine, a ball kneading machine and a material spraying device which are sequentially connected, the outlet end of the straw cutting machine is communicated with the feed end of the ball kneading machine, the discharge end of the ball kneading machine is connected with the feed end of the material spraying device, the material spraying device is arranged above a sintering trolley, a material spraying pipe of the material spraying device is downwards inclined, and the tail end of the material spraying device is a discharge hole of the biomass fuel balls. The utility model makes the biomass fuel ball spray in the sinter bed, the stereo air permeability of the biomass fiber greatly improves the density of the bed and increases the air permeability, and the biomass fuel ball has higher combustion value and can replace part of coke powder.

Description

Environment-friendly sintering system

Technical Field

The utility model relates to the technical field of iron making, in particular to an environment-friendly sintering system.

Background

Sintering is one of the most widely used iron-containing raw material agglomeration methods in the current iron and steel enterprises. After mixing and granulating iron powder ore, various fluxing agents and fine coke, orderly paving the mixture on a sintering machine trolley through a material distribution system, and after the surface of a sintered material is ignited, burning the fuel in a material layer from top to bottom and releasing heat under the forced air draft action of a lower air box; part of the components in the sintering material are softened and melted under the action of high temperature, and a certain amount of liquid phase is generated through chemical reaction, and the liquid phase are bonded into blocks when cooled, and finally are consolidated into sintering ore. And cooling the sintered ore by the circular cooler, further screening, and sending the sintered ore to a blast furnace to be used as a main raw material for smelting molten iron.

The factors influencing the sintering process are many, the main influencing factor is the air permeability of the sintering process, the air permeability of the sintering process is poor, the sintering speed is low, the sintering end point is lagged, the yield is low, the sintering energy consumption is high, meanwhile, the air permeability is poor, the temperature of main exhaust gas is reduced, the electric dust removal and the fan are greatly influenced, the electric dust removal cannot work normally, mud is hung on a fan rotor, and the normal operation of equipment is influenced. Therefore, the material loosening device is often added in the sintering process to improve sintering air permeability, air enters the mixed material layer through air holes in the material loosening device, air flow is converged and then diffused, air flow distribution in the sintering air draft process is improved, and material layer air permeability is improved. However, the air permeability of the material loosening device can only be adjusted by the size of the air flow, and when the fineness of the sintering material changes, the size of the air flow cannot be adjusted in time, so that the sintering condition is uncontrollable; because the combustion is not thorough, toxic gases such as carbon monoxide and the like can be generated, and higher environmental protection pressure can be brought.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model aims to provide a sintering system which is good in sinter layer air permeability, clean and environment-friendly.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

the utility model provides an environment-friendly sintering system, includes sintering machine and ring cooling machine, still includes the feedway that is used for providing biomass fuel ball in succession in to the sintering machine, feedway is including the straw cutting machine that connects gradually, rubs the ball machine and spouts the glassware, and the exit end of straw cutting machine is linked together with the feed end of rubbing the ball machine, and the feed end of spouting the glassware is connected to the discharge end of rubbing the ball machine, spout the glassware setting in sintering platform truck top, and spout the material pipe of glassware and be the downward sloping form, spout the terminal discharge gate that biomass fuel ball was put to the glassware.

The utility model is further improved in that: a feeding belt is arranged between the outlet end of the straw cutting machine and the feeding end of the ball kneading machine, and the discharging end of the feeding belt is arranged above the feeding port of the ball kneading machine.

The utility model is further improved in that: the material outlet end of the ball rubbing machine is also connected with a bag-type dust remover used for separating biomass fuel balls, the solid-state outlet end of the bag-type dust remover is connected to a blowing tank used for temporarily storing the biomass fuel balls through a conveyor, and the blowing tank is connected with the material inlet end of the material sprayer through a pressure-resistant pipeline.

The utility model is further improved in that: the ball rubbing machine comprises a shell, wherein a feeding mechanism and a ball rubbing mechanism coaxially fixed below the feeding mechanism are arranged in the shell, two drying bins are correspondingly arranged below the ball rubbing mechanism, the bottom of each drying bin is connected with an air supply mechanism blowing air upwards, and the upper part of the side wall of each drying bin is welded with an upwards inclined discharge pipe;

the feeding mechanism comprises a feeding hopper arranged in the center of the top of the shell; the ball rubbing mechanism comprises a fixed cast iron sleeve and a rotating cone pulley which are coaxially arranged, the fixed cast iron sleeve is fixed in the shell through a supporting beam, the rotating cone pulley capable of freely rotating is arranged in the fixed cast iron sleeve, and a ball rubbing cavity is formed between the inner wall of the fixed cast iron sleeve and the outer wall of the rotating cone pulley;

the air supply mechanism comprises a hot air pipe connected with a hot air delivery main pipe, and a plurality of vertical hot air branch pipes connected with the drying bin are arranged above the hot air pipe.

The utility model is further improved in that: the main shaft that the rotation cone pulley is connected runs through casing back fixed connection toper pinion downwards, still fixedly on the outer wall of casing set up a rotating electrical machines, the transmission shaft of rotating electrical machines passes through universal drive shaft and is connected with the transmission of toper gear wheel, the toper gear wheel is connected with the perpendicular meshing of toper pinion.

The utility model is further improved in that: the inner wall of the fixed cast iron sleeve is a smooth inner wall, and a plurality of polishing grooves with the gradient of 45 degrees are uniformly distributed on the outer wall of the rotating cone pulley.

The utility model is further improved in that: and a high-temperature gas recovery device and a low-temperature gas recovery device are sequentially arranged above the circular cooler along the discharging running direction of the sintered materials.

The utility model is further improved in that: the high-temperature gas recovery device and the low-temperature gas recovery device respectively comprise a heat collection cover, hot air collection branch pipes, a hot air collection main pipe and a blower; the hot air collecting main pipe of the high-temperature recovery device is connected with the waste heat boiler, and the hot air collecting main pipe of the low-temperature recovery device is connected with an air supply mechanism of the ball rubbing machine through a hot air conveying main pipe.

Due to the adoption of the technical scheme, the utility model has the technical progress that:

the utility model provides an environment-friendly sintering system, which continuously sprays biomass fuel balls into a sintering machine to uniformly spray the biomass fuel balls in a sintering material layer, the three-dimensional air permeability of the biomass fuel balls greatly improves the compactness of the material layer and increases the air permeability of the material layer, and meanwhile, the biomass fuel balls are inflammable and have a better combustion value, so that the normal operation of the sintering process is not influenced; the sintering success rate is effectively improved, the sintering energy consumption is reduced, and meanwhile, the sintering tail gas is discharged after being purified, so that the sintering process is clean and environment-friendly.

The feeding device comprises a straw cutting machine and a ball rolling machine, biomass straws are directly cut into particles after being harvested, the particles are conveyed to the ball rolling machine through a feeding belt for drying and forming, the obtained biomass fuel balls can be directly conveyed into a material sprayer for spraying, the process is simple and quick, and the continuous output and feeding of the biomass fuel balls can be realized; the hot drying air for the ball rubbing machine is a low-temperature air recovery device from the circular cooler, so that the full utilization of heat energy is realized.

In the blanking process of the sintering material, the biomass fuel balls are synchronously sprayed out through the material sprayer, so that the biomass fuel balls are uniformly laid in the sintering material layer, and the air permeability of the sintering material layer is effectively enhanced. The material spraying pipe of the material sprayer is arranged in an upper layer and a lower layer, so that the ventilation effect of the sinter bed in the height direction is further improved.

The ball twisting machine used in the utility model can synchronously dry biomass straw particles and extrude and twist balls, has high drying and twisting speed and large treatment capacity, can meet the requirement of rapid treatment of the biomass straw particles, and produces biomass fuel balls for a sintering machine.

The biomass fuel ball rolling machine disclosed by the utility model realizes ball rolling by adopting the relative rotation of the rotating cone pulley and the fixed cast iron sleeve, can reduce the breakage rate of biomass straw particles, ensures that the biomass fuel balls have good porosity, and improves the air circulation effect and the combustion condition during combustion. Meanwhile, the rotating cone pulley does up-and-down reciprocating motion along the vertical direction while rotating, the ball rubbing motion is converted from two-dimensional motion into three-dimensional motion, biomass straw particles are uniformly stressed from three directions, the particle breakage rate is further reduced, the roundness and the uniformity of the biomass fuel balls are increased, and the overall combustion effect of the biomass fuel balls is improved.

The air supply mechanism of the biomass fuel ball rubbing machine comprises two paths of air supply which are respectively opposite-flushed from top to bottom and from bottom to top, so that the drying efficiency and the drying speed of biomass straw particles are greatly increased, meanwhile, the straw particles are blown by wind power to float to a certain extent in the ball rubbing process, the hard contact of the biomass straw particles and the rotating cone pulley in the ball rubbing process is alleviated, the crushing of the straw particles caused by hard collision is reduced, and the porosity of biomass fuel balls is further ensured.

Drawings

FIG. 1 is a schematic diagram of the system connection of the present invention;

FIG. 2 is a schematic view of the overall structure of the ball rolling machine of the present invention;

FIG. 3 is a schematic structural view of a transmission part of a rotating cone pulley of the ball rolling machine;

FIG. 4 is a schematic structural diagram of a material preparation section of the sintering machine of the present invention;

FIG. 5 is a schematic view of the structure of the dispenser of the present invention;

FIG. 6 is a schematic top view of the circular cooler of the present invention, in which the curved arrows indicate the direction of the sintering material.

In the figure, I, a sintering machine, II, a circular cooler, III, a straw cutting machine, IV, a ball kneading machine, V, a bag-type dust remover, VI, a blowing tank, VII, a material sprayer, VIII, a high-temperature gas recovery device and IX, a low-temperature gas recovery device;

1. the device comprises a shell, 2, a feed hopper, 3, a bell-shaped material valve, 4, a fixed cast iron sleeve, 5, a rotating cone pulley, 6, a ball twisting cavity, 7, a discharge pipe, 8, a material receiving part, 9, a main shaft, 10, a conical pinion, 11, a conical big gear, 12, a rotating motor, 13, a universal transmission shaft, 14, a gear transmission box, 15, a reciprocating motor, 16, a crankshaft, 17, a crank case, 18, an eccentric wheel, 19, an ear plate, 20, a limiting plate, 21, a hot air pipe, 22, a hot air branch pipe, 23, an air supply ring pipe, 24, an air supply head, 25 and a drying bin; 26. a heat collecting cover 27, hot air collecting branch pipes 28, a hot air collecting main pipe 29 and a blower; 30. the device comprises a sintering trolley 31, trolley tracks 32, a bottom paving bin 33, a raw material bin 34, a blanking machine 35, an igniter 36, a negative pressure air chamber 37, a main pumping pipeline 38, a water seal ash discharge groove 39, a material spraying bracket 40, a suspension beam 41, a material spraying pipe 42, a support spring 43 and a fixing rod.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings.

The utility model provides an environment-friendly sintering system, as shown in fig. 1~ 6, including sintering machine I and ring cold machine II, still include the feedway that is used for providing biomass fuel ball in I to the sintering machine continuously, feedway includes straw cutting machine III, ball rubbing machine IV, sack cleaner V and ejector VII. The outlet end of the straw cutting machine III is communicated with the feed end of the ball kneading machine IV, the discharge end of the ball kneading machine IV is connected with a bag-type dust remover V, the solid-state outlet end of the bag-type dust remover V is connected with the feed end of a material sprayer VII through a conveyor, the material sprayer VII is arranged above the sintering trolley 30, a material spraying pipe 41 of the material sprayer VII is inclined downwards, and the tail end of the material sprayer VII is a discharge hole of biomass fuel balls. The biomass straws are cut, rubbed with balls, dried, sprayed into the sintering trolley 30 through the sprayer VII, and discharged with the sintering raw materials at the same time, so as to realize mixing.

Furthermore, the outlet end of the straw cutting machine III is connected with the feed end of the ball twisting machine IV through a feeding belt, the feed end of the feeding belt is arranged below the outlet of the straw cutting machine III, and the discharge end of the feeding belt is arranged above the feed inlet of the ball twisting machine IV; the chopped straw particles are directly conveyed to a ball rolling machine IV through a feeding belt for feeding.

Furthermore, the solid-state outlet end of the bag-type dust collector V is connected to a blowing tank VI through a conveyor, and the blowing tank VI realizes temporary storage of the biomass fuel balls and ensures stable and continuous output of the biomass fuel balls. The blowing tank VI is a plurality of sealing tanks which are arranged in parallel, the feeding end of each blowing tank VI is connected with the solid-state outlet end of the bag-type dust remover V through a conveyor, and the discharging end of each blowing tank VI is communicated with the feeding end of the material sprayer VII through a pressure-resistant pipeline.

And the blowing tank VI is also provided with a compressed air pipeline, and biomass fuel balls in the tank enter the material spraying pipe and the material bed along a pressure-resistant pipeline under the driving of compressed air. Generally, in order to ensure uniform and continuous blanking of biomass fuel balls, feeding operation and blanking operation are carried out in different blowing tanks VI; when one injection tank VI is filled, the injection tank VI is immediately sealed, so that the biomass fuel ball is prevented from absorbing moisture. As shown in fig. 2 to 3, the ball kneading machine includes a casing 1, a feeding mechanism and a ball kneading mechanism are arranged inside the casing 1, and the ball kneading mechanism is coaxially fixed below the feeding mechanism; the feeding mechanism is used for uniformly feeding the biomass fuel, and the ball kneading mechanism realizes the extrusion and ball kneading of the fuel. Two drying bins 25 are correspondingly arranged below the ball rubbing mechanism, the bottoms of the two drying bins 25 are connected with air supply mechanisms blowing air upwards, and the upper parts of the side walls of the two drying bins 25 are welded with discharge pipes 7 inclining upwards.

The feeding mechanism is arranged at the top of the casing 1 and comprises a feeding hopper 2 and a bell-shaped material valve 3 which are coaxially arranged. The feed hopper 2 is a conical hopper with a large upper part and a small lower part, so that the feeding is convenient to fill; a bell-shaped material valve 3 is arranged at the bottom of the feed hopper 2 to ensure that biomass straw particles are evenly fed along the circumferential direction; the bell-shaped material valve 3 realizes the opening and closing control of the valve body through a pneumatic rod, and the biomass straw particles are sent into the ball rubbing mechanism below the valve body.

The bottom of the feed hopper 2 is also provided with an air supply ring pipe 23 in a surrounding manner, the air inlet end of the air supply ring pipe 23 is connected with a hot air conveying main pipe, and a plurality of air supply heads 24 are uniformly distributed at the bottom of the air supply ring pipe 23 in the circumferential direction. When feeding, continuously supply air downwards through the air supply head 24, dry the material of feed end by blowing to with the hot-blast convection current from bottom to top, strengthen the drying effect of material.

The ball rubbing mechanism comprises a fixed cast iron sleeve 4 and a rotating cone pulley 5, wherein the fixed cast iron sleeve 4, the rotating cone pulley 5, the feed hopper 2 and the bell-shaped material valve 3 are all coaxially arranged. Fixed cast iron cover 4 is fixed inside casing 1 through a supporting beam, but is provided with big end down and rotation cone pulley 5 of free rotation in the inside of fixed cast iron cover 4, forms between the inner wall of fixed cast iron cover 4 and the outer wall of rotation cone pulley 5 and rubs ball chamber 6 with the hands, the bottom opening of rubbing ball chamber 6 with the hands corresponds the entry of two stoving storehouses 25 respectively, and stoving storehouse 25 bottom is connected with the air supply mechanism of the air-blast that makes progress, discharging pipe 7 of connecting stoving storehouse 25 is connected with the draught fan. Biomass straw particles uniformly fall into the ball kneading cavity 6 through the bell-shaped material valve 3, and under the rotating extrusion of the fixed cast iron sleeve 4 and the rotating cone pulley 5, the particles are agglomerated and formed by ball kneading; the molded product falls into a drying bin 25 and is suspended in the drying bin 25 under the action of blast air to realize drying; under the negative pressure formed by the induced draft fan, the biomass fuel balls and the hot air are pumped out together, and then the solid-gas separation is carried out to obtain the finished product of the biomass fuel balls.

The inner wall of the fixed cast iron sleeve 4 is a conical surface consistent with the outer wall of the rotating cone pulley 5, and an included angle between the inner wall of the fixed cast iron sleeve 4 and the outer wall of the rotating cone pulley 5 is 10-15 degrees, preferably 10 degrees.

In order to increase friction force and improve the ball rolling efficiency, the inner wall of the fixed cast iron sleeve 4 is a smooth inner wall, a plurality of polishing grooves with the inclination angle of 45 degrees are uniformly distributed on the outer wall of the rotating cone pulley 5, the groove depth of each polishing groove is not more than 5mm, and the phenomenon that the biomass straw particles are embedded in the grooves to cause material eating and influence the ball rolling effect is avoided.

Further, a material receiving part 8 is arranged at the upper part of the fixed cast iron sleeve 4, the material receiving part 8 is in an inverted cone shape with a large upper part and a small lower part, and the discharge end of the bell-shaped material valve 3 is surrounded and coated; after flowing out from bell-shaped material valve 3, the center of cone pulley 5 is rotated along the inner wall flow direction of receiving material portion 8 to living beings straw granule, evenly flows in along circumference again and rubs ball chamber 6, has increased a feeding distribution, has improved the raw materials homogeneity that gets into and rubs ball chamber 6, ensures rotating cone pulley 5 rotation and rubs the ball in-process, and the even atress in cone pulley surface improves the big or small degree of consistency of living beings fuel ball.

The center of the bottom of the rotating cone pulley 5 is connected with a main shaft 9, and the main shaft 9 vertically penetrates through the machine shell 1 downwards and then is fixedly connected with a conical pinion 10; still fixedly set up a rotating electrical machines 12 on the outer wall of casing 1, the transmission shaft of rotating electrical machines 12 passes through universal drive shaft 13 and is connected with the transmission of toper gear wheel 11, toper gear wheel 11 and the transmission of the perpendicular meshing of toper pinion 10. The power of the rotating motor 12 is transmitted to the main shaft 9 through the universal transmission shaft 13, the conical big gear 11 and the conical small gear 10, and the rotating conical wheel 5 rotates horizontally along with the main shaft 9.

The biomass fuel ball rubbing machine further comprises a reciprocating driving mechanism for driving the rotating cone pulley 5 to reciprocate up and down, and the reciprocating driving mechanism is arranged below the machine shell 1. The reciprocating driving mechanism is an actuating mechanism for converting rotary motion into linear motion, and can be a worm and gear mechanism, a rack and pinion mechanism, a cam mechanism and the like, and is preferably the cam mechanism shown in fig. 1 and 2.

As shown in fig. 2 and 3, the reciprocating drive mechanism includes a gear box 14, a reciprocating motor 15, a crankshaft, a crankcase 17, and an eccentric 18. The gear transmission box 14 is fixedly connected with the main shaft 9 and the universal transmission shaft 13 and used for covering and protecting the conical large gear 11 and the conical small gear 10 which are meshed with each other, so that the stable and continuous horizontal rotation motion is ensured during the up-and-down reciprocating motion.

The crankcase 17 is arranged below the gear transmission box 14, the arched crank shaft 16 is arranged in the crankcase 17, one end of the arched crank shaft 17 penetrates through the wall of the crankcase 17 and is in transmission connection with the main shaft 9 of the reciprocating motor 15, and the other end of the arched crank shaft 16 is arranged in a bearing on the side wall of the crankcase 17, so that the arched crank shaft 16 can rotate in the crankcase 17 under the driving of the reciprocating motor 15. The crankshaft 16 is connected with the gear transmission box 14 through an eccentric wheel 18, one end of the eccentric wheel 18 is hinged with the bottom of the gear transmission box 14, and the other end of the eccentric wheel 18 is hinged with the bent part of the crankshaft 16; when the crankshaft 16 rotates, the gear box 14 is driven to reciprocate up and down through the transmission of the eccentric wheel 18.

Furthermore, two vertical lug plates 19 are arranged at the top of the gear transmission box 14, and the top end of the eccentric wheel 18 is pinned between the two lug plates 19.

Furthermore, the gear transmission case 14 may be fixedly connected to the main shaft 9 and the universal transmission shaft 13 in various ways, for example, a flange plate is welded to the outer wall of the main shaft 9 or the universal transmission shaft 13, a through hole is formed in a corresponding position of the gear transmission case 14, and the flange plate is fixed to the case body of the gear transmission case 14 by a bolt or a fixing pin; alternatively, the main shaft 9 and the universal drive shaft 13 are connected to the inner wall of the gear box 14 through a pipe clamp, and the like. The use of the connection structure is not exhaustive, as long as the fixed connection can be realized and no sliding occurs between the two.

Further, a fixed guide sleeve is arranged at the joint of the machine shell 1 and the main shaft 9 and used for ensuring the verticality of the main shaft 9 when the rotating cone pulley 5 moves up and down. When the up-and-down reciprocating amplitude of the rotating cone pulley 5 is 5mm, the thickness of the fixed guide sleeve is not less than 100 mm.

Furthermore, limiting plates 20 are further arranged on two sides of the gear transmission case 14, and the gear transmission case 14 is in clearance fit with the limiting plates 20 on the two sides, so that the verticality of the gear transmission case 14 when the rotating bevel wheel 5 moves up and down is ensured.

Further, the rotating electrical machine 12 is fixed through a mounting seat connected to the outer wall of the machine shell 1, when the rotating cone pulley moves up and down in a reciprocating manner, the end of the rotating electrical machine 12 is kept stationary, and continuous transmission is realized by means of the steering of the universal transmission shaft 13.

Further, the universal transmission shaft 13 is a cross-axle type universal spindle, has a simple structure, high transmission efficiency and large transmission torque, and can ensure effective transmission of the rotating motor 12 during the up-and-down movement process of the gear transmission case 14.

The air supply mechanism comprises a horizontal hot air pipe 21, the inlet end of the hot air pipe 21 is connected with a hot air conveying main pipe, and a plurality of vertical hot air branch pipes 22 are arranged above the hot air pipe 21 and connected with a drying bin 25. Hot air enters the drying bin 25 from the bottom of the machine shell 1 through the hot air conveying main pipe, the hot air pipe 21 and the hot air branch pipe 22, and the biomass fuel balls are dried by blowing from bottom to top.

As shown in fig. 4 and 5, the sprayer vii comprises a spraying bracket 39, a suspension beam 40 and a spraying pipe 41. The material spraying bracket 39 is a door-shaped bracket arranged on two sides of the trolley track 31 in a spanning manner, the suspension beam 40 is a U-shaped beam, the top of the suspension beam 40 is fixedly connected with the top beam of the material spraying bracket 39, and the middle part of the suspension beam 40 is also provided with a fixed rod 43;

the material spraying pipes 41 are two layers arranged side by side, the high-layer material spraying pipe 41 is fixedly connected with the fixing rod 43 through the supporting spring 42, the low-layer material spraying pipe 41 is fixedly connected with the bottom cross beam of the suspension beam 40 through the supporting spring 42, and fine adjustment of the material spraying angle and the material spraying height of the material spraying pipe 41 can be achieved through the supporting spring 42. The two layers of material spraying pipes 41 are arranged in a staggered manner along the width direction of the sintering trolley 30, so that uniform material distribution in the width direction and the height direction is realized. The material spraying pipe 41 is inclined downwards, an opening at the tail end of the material spraying pipe is an inclined opening, a material layer is blown out of a nest shape when compressed air is sprayed, and biomass fuel balls are embedded into the material nest to uniformly distribute materials.

In actual production, the material spraying pipes 41 can be arranged into multiple layers according to different thicknesses of the sintering material layers and are uniformly arranged along the height direction; generally, the distance between each layer of the spray pipes 41 is not less than 30 mm.

As shown in FIG. 6, a high-temperature gas recovery device VIII and a low-temperature gas recovery device IX are sequentially arranged above the ring cooling machine II along the discharge running direction of the sintering materials.

The high-temperature gas recovery device VIII and the low-temperature gas recovery device IX both comprise a heat collection cover 26, hot air collection branch pipes 27, a hot air collection main pipe 28 and a blower 29; a hot air collecting main pipe 28 of the high-temperature recovery device is connected with a waste heat boiler, and a steam outlet of the waste heat boiler is connected with steam power generation equipment through a pipeline; and a hot air collecting main pipe 28 of the low-temperature recovery device is connected with an air supply mechanism and an air supply ring pipe 23 of the ball kneading machine IV through a hot air conveying main pipe and is used as drying wind for drying the biomass fuel balls.

The working process of the utility model is as follows:

the biomass straws are cut into particles of 30-50 mm by a straw cutting machine, sent into a feed hopper of a biomass fuel ball twisting machine by a feeding belt, and dropped into a ball twisting cavity after being distributed by a bell-shaped material valve. Under the rotation and up-and-down reciprocating motion of the rotating cone pulley, the biomass straw particles are extruded and formed by the rotating cone pulley and the fixed cast iron sleeve; the formed biomass fuel balls fall into the drying bin downwards and are suspended and dried by hot air blown in from below.

The dried biomass fuel ball is sucked to the discharge pipe under the action of negative pressure, solid-gas separation is carried out through the bag-type dust remover, the dried biomass fuel ball enters the injection tank for temporary storage, and clean tail gas is directly discharged.

The biomass fuel balls enter the material sprayer from the injection tank under the attraction of the draught fan and are sprayed out through the material spraying pipe, so that the loosening and combustion supporting of the sintering material are realized, and the air permeability and the sintering effect of the material layer are ensured.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides an environment-friendly sintering system, includes sintering machine (I) and cold machine of ring (II), its characterized in that: still including being used for providing the feedway of biomass fuel ball in sintering machine (I) continuously, feedway is including straw cutting machine (III), ball machine (IV) and the material sprayer (VII) that connect gradually, and the exit end of straw cutting machine (III) is linked together with the feed end of ball machine (IV) of rubbing with the hands, and the feed end of material sprayer (VII) is connected to the discharge end of ball machine (IV) of rubbing with the hands, material sprayer (VII) sets up in sintering platform truck (30) top, and material spraying pipe (41) of material sprayer (VII) are the downward sloping form, and the end of material sprayer (VII) is the discharge gate of biomass fuel ball.

2. The environment-friendly sintering system of claim 1, wherein: a feeding belt is arranged between the outlet end of the straw cutting machine (III) and the feeding end of the ball kneading machine (IV), and the discharging end of the feeding belt is arranged above the feeding hole of the ball kneading machine (IV).

3. The environment-friendly sintering system of claim 1, wherein: the discharge end of the ball rubbing machine (IV) is also connected with a bag-type dust remover (V) used for separating biomass fuel balls, the solid-state outlet end of the bag-type dust remover (V) is connected to a blowing tank (VI) used for temporarily storing the biomass fuel balls through a conveyor, and the feeding end of the blowing tank (VI) and the feeding end of the material sprayer (VII) are connected through a pressure-resistant pipeline.

4. The environment-friendly sintering system of claim 1, wherein: the ball rubbing machine (IV) comprises a machine shell (1), a feeding mechanism and a ball rubbing machine (IV) mechanism which is coaxially fixed below the feeding mechanism are arranged in the machine shell (1), two drying bins (25) are correspondingly arranged below the ball rubbing machine (IV) mechanism, the bottom of each drying bin (25) is connected with an air supply mechanism for blowing air upwards, and the upper part of the side wall of each drying bin (25) is welded with an upwards inclined discharge pipe (7); the feeding mechanism comprises a feeding hopper (2) arranged in the center of the top of the shell (1); the ball rolling mechanism (IV) comprises a fixed cast iron sleeve (4) and a rotating cone pulley (5) which are coaxially arranged, the fixed cast iron sleeve (4) is fixed inside the casing (1) through a supporting beam, the rotating cone pulley (5) capable of freely rotating is arranged inside the fixed cast iron sleeve (4), and a ball rolling cavity (6) is formed between the inner wall of the fixed cast iron sleeve (4) and the outer wall of the rotating cone pulley (5); the air supply mechanism comprises a hot air pipe (21) connected with a hot air delivery main pipe, and a plurality of vertical hot air branch pipes (22) connected with a drying bin (25) are arranged above the hot air pipe (21).

5. The environment-friendly sintering system of claim 4, wherein: the main shaft (9) that the rotation cone pulley (5) is connected runs through casing (1) back fixed connection toper pinion (10) downwards, still fixed rotating electrical machines (12) that set up on the outer wall of casing (1), the transmission shaft of rotating electrical machines (12) passes through universal drive shaft (13) and is connected with toper gear wheel (11) transmission, toper gear wheel (11) are connected with toper pinion (10) vertical toothing.

6. The environment-friendly sintering system of claim 4, wherein: the inner wall of the fixed cast iron sleeve (4) is a smooth inner wall, and a plurality of polishing grooves with the gradient of 45 degrees are uniformly distributed on the outer wall of the rotating cone pulley (5).

7. The environment-friendly sintering system of claim 1, wherein: and a high-temperature gas recovery device (VIII) and a low-temperature gas recovery device (IX) are sequentially arranged above the ring cooling machine (II) along the discharge running direction of the sintering material.

8. The environment-friendly sintering system of claim 7, wherein: the high-temperature gas recovery device (VIII) and the low-temperature gas recovery device (IX) respectively comprise a heat collection cover (26), hot air collection branch pipes (27), a hot air collection main pipe (28) and a blower (29); and a hot air collecting main pipe (28) of the high-temperature gas recovery device is connected with the waste heat boiler, and the hot air collecting main pipe (28) of the low-temperature gas recovery device is connected with an air supply mechanism of the ball rubbing machine (IV) through a hot air conveying main pipe.