CN2278191Y

CN2278191Y - Slope cooling machine

Info

Publication number: CN2278191Y
Application number: CN 97201285
Authority: CN
Inventors: 刘宗洲
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-02-05
Filing date: 1997-02-05
Publication date: 1998-04-08
Anticipated expiration: 2007-02-05

Abstract

The utility model relates to a cooling machine of the cooling process of industrial enterprises, which solves the problems of reliable operation, convenient use, etc. The lower part of a cooling grate bed is provided with a blower, the upper part of the cooling grate bed is provided with a smoke hood, and a discharge end is provided with a conveying machine and an electrical control device controlling the operational speed of the conveying machine. The utility model is characterized in that a feed opening of a feed end is provided with front and back stop walls, and the cooling grate bed is a segmental slope structure provided with steps and is arranged according to the repose angles of materials and the thickness of material layers. The utility model is used for the cooling process of metallurgy, construction cement, etc.

Description

The slope cooler

The utility model belongs to smelter and produces process for cooling technology and the apparatus field that acid pellet, sintering deposit and building materials enterprise are produced cement.Be applicable to the process for cooling of producing in acid pellet, sintering deposit and the cement process, be specially adapted to produce with kiln process the process for cooling of cement with grate kiln method production acid pellet and building material industry.

In the acid pellet production process, green-ball must can be stacked or be transported to next process, and reduce the iron oxide content in the acid pellet in cooling procedure after super-dry, preheating, fixed, roasting after supercooling, improve compression strength.

At present, in the technical process of producing acid pellet, the process for cooling equipment that adopts has annular cooler, straight line cooler, vertical cooler, the employing cylinder cooler that also has usually.Produce sintering deposit and adopt annular cooler and straight line cooler usually.

Annular cooler and straight line cooler have good cooling results, and production capacity is big, the good iron oxide function of falling is arranged, but moving component are many, auxiliary equipment is many, and weight of equipment is big, needs to make cooling comb bed with steel alloy, thereby the equipment manufacturing cost height, floor space is big, operational failure rate height; Vertical cooler good cooling results, it is good to fall the iron oxide function, and weight of equipment is light, and floor space is little, and cost is low, and fault rate is low, but because the restriction of the type of cooling, production capacity is low, is not suitable for the large-scale production needs; The type of cooling of cylinder cooler belongs to indirect cooling, does not fall the iron oxide function, and weight of equipment is big, is not suitable for acid pellet production from technological requirement.

At present, producing in the technical process of cement with kiln process, process for cooling equipment generally adopts the step-by-step movement cooler.The step-by-step movement cooler also needs to make the cooling grate plate with steel alloy because moving component is more, so the equipment manufacturing cost height, installs, debugging is also cumbersome, and fault is also higher in operation process.Because the cooling duct of step-by-step movement cooler comb bed is vertically disposed, the material of leakage is arranged in operation process again, Lou material conveying, send-back system also need be set in the bottom of step-by-step movement cooler, therefore manufacturing cost is further raise.

The purpose of this utility model provides the cooling device that a kind of equipment manufacturing cost is low, Installation and Debugging convenient, running is reliable, be applicable to large-scale production, i.e. slope cooler.

The purpose of this utility model is achieved in that the slope cooler, and it includes cooling comb bed and the feed end of upper end and the discharge end of lower end, a cooling comb bed bottom is provided with blower fan, top is provided with petticoat pipe, and discharge end is provided with conveyer, and is provided with the electrical control gear of control conveyer running speed; It is characterized in that: the charging aperture of feed end is provided with forward and backward stock retaining wall, cools off the bed of combing for utilizing the band step segmentation ramp type structure of pressing material angle of repose and the setting of thickness of feed layer volume.

Above-mentioned design, preceding stock retaining wall and cooling are combed and are provided with spacing between the bed.Blower fan adopts air blast, and has bellows and be connected with the air channel and with blower outlet at the cooling bed of combing.When being used for the cooling of grate kiln method production acid pellet, pneumatic separation device and static grizzly are set at feed end.Can petticoat pipe be made as three sections and corresponding three sections coolings etc., add, reached good results such as running is reliable, easy to use because material continuous motion, moving component are less.

Below by drawings and Examples the utility model is described further again.

Fig. 1 is one of the utility model embodiment (is example with the grate kiln production system) complete machine structure schematic diagram;

Fig. 2 is the utility model cooling comb bed structure schematic diagram;

Fig. 3 is the grate plate shape organigram of one of the utility model embodiment;

Fig. 4 is the schematic side view of Fig. 3.

As shown in Figure 1, through the material 17 of rotary kiln 1 roasting through static grizzly 2, selection by winnowing blower fan 20, the piece-rate system that selection by winnowing airduct and air outlet 21 formed isolates＞60mm and＜enter charging aperture 23 behind the defective material of 5mm, material is because the effect of dead weight, the cooling comb bed of arranging along the slope 16 flow on the apron conveyor 13, this moment, apron conveyor 13 remained static, because the effect of material nature angle of rest (repose), pile up to charging aperture 23 directions gradually, when reaching the position, middle level-sensing device position that is arranged on the level-sensing device 5 on the stock retaining wall 3 of back, apron conveyor 13 starts, material enters in the finished product conveyer 14 continuously, in the blanking process with the increase of material level, low-temperature zone cooling blower 12, middle-temperature section cooling blower 11, high temperature section cooling blower 9 are opened in segmentation.The cooling air channel that the slit by between grate plate and the grate plate that the cooling air that each blower fan bloated is provided with through bellows 10 are combed bed 16 by cooling on constitutes blows to material bed.The temperature of cooling air raises after heat exchange, the cooling air of high temperature section enters in the rotary kiln 1 through high temperature section petticoat pipe 19 and kiln hood seal closure 25, participate in the kiln internal combustion as the secondary combustion air, the middle-temperature section cooling air is after collecting through middle-temperature section petticoat pipe 18, be transported to the drying grate dryer section through air port C, the low-temperature zone cooling air is collected after air port D is transported to coal dust preparation system through low-temperature zone petticoat pipe 15.Because the high temperature section cooling air will enter rotary kiln 1, so kiln hood seal closure 25 and main rifle 24 are axially being wanted corresponding lengthening, for preventing to add a main rifle water-cooled in main rifle 24 centres and hang 26 because of cantilever design causes main rifle 24 sagging.After the powder of selection by winnowing separation back＜5mm enters expansion chamber 4, after discharger 7 is regularly discharged, transport, after dust sucting pipeline 6 connects whirlwind, multi-tube dust cleaner sedimentation by air port A, collect than fine grained by waste material conveyer 8 than the coarse granule sedimentation.Thickness of feed layer on the cooling comb bed 16 is by preceding stock retaining wall 22 and cool off deciding apart from size of 16 of comb beds.

For preventing that high-temperature material from directly acting on apron conveyor 13, when the slope cooler uses for the first time, need to add earlier the cold burden of some, cold burden adds to till apron conveyor 13 nearest bellows 10 places.

For making full use of the exothermic reaction in the high temperature section cooling procedure, cooling air temperature through high temperature section is improved, thickness of feed layer is trapezoidal layout, be that the high temperature section bed of material is thick, arrive low-temperature zone attenuate gradually, gradient is by the difference decision of the natural angle of rest (repose) of the gradient of cooling off the bed 16 of combing and material, high temperature section 800-1000mm, low-temperature zone 600-800mm.

As shown in Figure 2, cooling comb bed 16 is made up of grate plate 31, location reinforcement gusset 32, joist 33, bottom girder 34, grate plate 31 is placed on the joist 33 from low to high successively, leave the space between grate plate and the grate plate in the horizontal direction and form cooling air channel, cooling air air channel thus is blown into the bed of material, for preventing that material from stopping up ducting outlet, cooling comb bed 16 is designed to structure with the level as shown in Figure 2.

The ribbon conveyer that the utility model utilization is combed bed and is arranged on discharge end by the cooling of the slope of the difference setting of material angle of repose and bed of material levels thickness forms the motion of material, and the control of material movement speed realizes by level-sensing device that is arranged on stock retaining wall behind the charging aperture and the running speed that electric control system is controlled ribbon conveyer; Thickness of feed layer is by the comb distance decision of bed of preceding stock retaining wall and cooling, and when discharging material amount and charging material amount reached constant, the thickness of material on bed is combed in cooling also kept constant, to satisfy the needs that evenly cool off.This cooler adopts the air blast cooling, the air outlet of air blast be arranged on the bellows that cooling combs under the bed and be connected, on the cooling comb bed grate plate made from carbofrax material is set, horizontally disposed cooling air channel is arranged between grate plate and the grate plate, and air blast bloats the cold wind that comes and enters the bed of material through bellows and cooling air channel.Bed of material continuous motion, cooling air uninterruptedly are blown into the bed of material, reach cooling purpose.

When the slope cooler is used for the process for cooling process of grate kiln method production acid pellet, for preventing in the oxidation heat liberation process of cooling starting stage, because of Fen foam in the material too much causes the material bonding, at feed end pneumatic separation device is set, in order to separate powder less than 5mm.Pneumatic separation device is made up of blowing blower fan, expansion chamber, unloading valve, deduster and air-introduced machine.For preventing that the block in the material from entering cooler, at feed end static grizzly is set, be used to separate lump material greater than 60mm.

On comb bed top, slope three sections petticoat pipes are set, the heat of material is taken away in the cooling air process heat exchange of passing the bed of material, and the temperature of wind raises, and high temperature section is advanced rotary kiln through the kiln sealing cover, and middle-temperature section advances drying grate dryer section, low-temperature zone emptying, or is used for coal dust preparation system.(with regard to the grate kiln working system).

When the slope cooler is used for sintering deposit production or produces the process for cooling of cement with kiln process, pneumatic separation device and static grizzly needn't be set, three sections hot flue gases that petticoat pipe is discharged are used for combustion-supporting and residual neat recovering system and cogeneration, waste heat boiler etc.

The utility model and existing annular cooler, straight line cooler, vertical cooling for acid pellet, sintering deposit production Machine, cylinder cooler and be used for kiln process and produce the step-by-step movement cooler of cement and compare, under the equal prerequisite for the treatment of capacity, by In having adopted stacking angle of repose and the cooling grate of slope layout and the continuous fortune that apron conveyor has been realized material of utilizing material Moving, so there is equipment tonnage light, floor space is little, can reduce overall investment, accounts for less the place. Because moving component is few, equipment The reliability height can improve the operating rate of equipment; Owing to adopt carborundum instead of alloy steel grate, can reduce equipment manufacturing cost and running Expense; Because cooling air channel is horizontally disposed, therefore Lou material conveying, retracting device needn't be set again, the equipment gross tonnage of making advances One step reduced, and equipment operation rate further improves. When slope cooling machine is used for producing acid pellet with the grate kiln method During technical process, owing to adopt aidr bells blast system to separate with static grizzly less than 5mm powder with greater than the lump material of 60mm, Material needn't sieve again and can become finished product after the cooling, has simplified the technological process of production.

Claims

1, slope cooler, it includes cooling comb bed and the feed end of upper end and the discharge end of lower end, and cooling comb bed bottom is provided with blower fan, and top is provided with petticoat pipe, and discharge end is provided with conveyer, and is provided with the electrical control gear of controlling the conveyer running speed; It is characterized in that: the charging aperture of feed end is provided with forward and backward stock retaining wall, cools off the bed of combing for utilizing the band step segmentation ramp type structure of pressing material angle of repose and the setting of thickness of feed layer volume.

2, slope as claimed in claim 1 cooler is characterized in that: preceding stock retaining wall and cooling are combed and are provided with spacing between the bed.

3, slope as claimed in claim 2 cooler is characterized in that: blower fan adopts air blast, and has bellows and be connected with the air channel and with blower outlet at the cooling bed of combing.

4, slope as claimed in claim 3 cooler is characterized in that: at feed end pneumatic separation device and static grizzly are set.

5, slope as claimed in claim 4 cooler, it is characterized in that: petticoat pipe is made as three sections and corresponding three sections coolings.

6, slope as claimed in claim 1 cooler, it is characterized in that: cooling comb bed is made up of grate plate, location reinforcement gusset, joist, bottom girder, grate plate is placed on the joist from low to high successively, leaves the space between grate plate and the grate plate in the horizontal direction and forms cooling air channel.

7, slope as claimed in claim 4 cooler is characterized in that: pneumatic separation device is made up of blowing blower fan, expansion chamber, unloading valve, deduster and air-introduced machine.

8, slope as claimed in claim 1 cooler, it is characterized in that: the conveyer of discharge end is apron conveyor and finished product conveyer.