CN2377454Y

CN2377454Y - Briquette over-feed machine

Info

Publication number: CN2377454Y
Application number: CN 99220941
Authority: CN
Inventors: 张云芝; 姜秀君
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-19
Filing date: 1999-05-19
Publication date: 2000-05-10
Anticipated expiration: 2009-05-19

Abstract

The utility model relates to a briquette machine in front of a boiler, which is composed of a coal bucket, a machine frame, a block equalizing roller, an arc sieve, a coal discharging wheel, a forming roller, baffles, a valve, an anti-clamping roller, a wind screen, a steel cable, a rope pulley, a bearing frame, a spring, and a screw rod. The briquette machine has the advantages that small-sized coal lumps can be laid on a grate, briquettes can be laid on the coal lumps, the ventilation of the fuel bed is good, the ignition is quick, the combustion is sufficient, the thermal efficiency is high, and dry desulfuration can be realized. Because of the improved design of the mechanism of the utility model, the briquette machine in front of a boiler reaches a more ideal practical stage, and becomes an ideal device for heating boilers and industrial boilers to realize coal-burning clean combustion.

Description

Coal briquette machine before boiler

This practical auxiliary device that belongs to boiler, particularly be the coal briquette machine before boiler that Industrial Boiler and heating boiler are used.

Existing boiler coal briquette machine before boiler, for example, the patent No. is 97232967.6 " coal briquette machine before boiler " and 93229625 " forward type molding coal machine ", realized coal powder formation, fine coal separates with lump coal, and moulded coal and lump coal fall into fire grate simultaneously, format roll stepless speed regulation, and with fire grate synchronous operation, can adjust coal seam thickness or the like, but there are many problems in actual applications, as, moulded coal is following, lump coal is last, and the piece footpath is bigger, has prolonged the first combustion time, influences the lime-ash after-flame; Than gathering coal and the easy stuck discharge wheel of stone, make its damage, cause shutdown; The stokehold is leaked out bigger, cause temperature of initial combustion low with weak points such as format roll is overheated, in addition, do not have the desulfurizing function design.

The purpose of this utility model provides and a kind ofly can overcome above-mentioned shortcoming, and small coal is layered on earlier on the fire grate, moulded coal is layered on above the coal cinder, and can realizes the coal briquette machine before boiler of dry desulfurization.

The purpose of this utility model is achieved in that accompanying drawings is as follows:

A kind of coal briquette machine before boiler comprises coal bunker, frame, equal piece roller, sieve bend, discharge wheel, format roll, and its design feature is:

1. vertically add a dividing plate 23 in the coal bunker, coal bunker is divided into a.b district two parts;

2. an end of valve 4 is movably connected on the inwall of coal bunker seat 19 in the b district;

3. the d district below b district and the discharge wheel 18 is connected.

Accompanying drawing 1 is the coal briquette machine before boiler generalized section

Description of drawings and embodiment:

By accompanying drawing 1 as can be known, machine shell is made up of upper and lower butt joint the between the frame 10 of the coal bunker 1 on top and bottom, and in order to manufacture and convenient by dress, coal bunker 1 is docked up and down with coal bunker seat 19 by last bucket 1-1 to be formed, in coal bunker 1, vertically be provided with dividing plate 23, the inner chamber of coal bunker 1 is divided into a district, the left and right sides and b district; The a district is as throwing coal, and the b district is used for throwing desulfurizing agent; In a district, laterally be provided with equal piece roller 2 and 3; all piece roller 3 is an initiative drive shaft; and be fixed on coal bunker 1 sidewall by bearing bracket stand respectively, wherein all being provided with spring 20 in the bearing bracket stand 24 of piece roller 2, spring 20 left ends touch with the live bearing seated connection of equal piece roller 2; the other end of spring 20 is fixed on the spring base 22; spring base 22 contacts with screw mandrel 21, and main effect is when running into hard foreign matter, and equal piece roller 2 compresses spring to the right and avoids; prevent roll breakage, and can shut down eliminating.

By also finding out anti-sticking roller 5 and the left between equal piece roller 3 and discharge wheel 18 in the accompanying drawing 1, and the lower end of dividing plate 23, when leaking than gathering coal between equal piece roller 2 and 3, discharge wheel 18 turns left to bring anti-sticking roller 5, anti-sticking roller 5 turns left will block coal cinder and gives the initiatively discharge wheel 18 left chambeies of left-hand rotation, avoids stuck; On coal bunker 1 inwall, particular location is provided in a side of on the inwall of coal bunker seat 19 in anti-sticking roller 5 upper left b districts, flexibly connects the upper end of valve 4, is mainly used to control the adding of desulfurizing agent.The b district that forms between desulfurizing agent is by coal bunker 1 inwall and dividing plate 23 is suitable for reading to be added fashionablely, and valve 4 is opened, and is sent in the coal dust by the left-hand rotation of anti-sticking roller 5.

In the above-mentioned coal briquette machine before boiler, two equal piece rollers 2 in the coal bunker 1 and 3, the engagement of star tooth relatively rotates, all the bearings at both ends supporting base of piece roller 3 uses bolting on coal bunker seat 19, axle head has gear and chain gear transmission, and all piece roller 2 two end axles bearings and coal bunker seat 19 are expansion bearing and rely on spring 20 to produce big precompression; Anti-sticking roller 5 is fixed in the coal bunker seat 19, and two ends have bearing block to be fixed by bolts to the seat portion of its side plate, are positioned at equal piece roller 3 lower lefts, discharge wheel 18 upper left sides, and axle head has chain gear transmission; Desulfurizing agent displacement control valve door 4, its rotating shaft are fixed on coal bunker seat 19 biside plates, and regulating handle is arranged, and are positioned at anti-sticking roller 5 left sides; Discharge wheel 18 is positioned at frame 10 tops, and anti-sticking roller 5 lower rights, two ends have bearing block to be fixed by bolts on the frame 10 upper side panel bearings, and axle head has chain gear transmission; Sieve bend 8 is positioned at anti-sticking roller 5 belows, and discharge wheel 18 lower lefts, two ends have otic placode to be fixed by bolts on the side plate seat of upper rack; Bottom format roll 12 and 13 is horizontal side by side in the frame 10, and inclination or horizontal fixed are on the bearing block of frame 10 both sides, and format roll 12 bearing blocks are fixed by bolts on the frame 10, and format roll 13 is the expansion bearing bearing block, and relies on spring 15 to produce big precompression; Barge board 9 upper ends are connected with steel wire rope 7, and the upper end of steel wire rope 7 is connected with the rope sheave 6 that is fixed on frame 10 tops, and its axle head has worm gear pot bar transmission mechanism; In the above-mentioned coal briquette machine before boiler, its format roll 12 is initiatively transmission, its shaft end gear and format roll 13 shaft end gear engaged transmission; Format roll 12 axle head sprocket wheels are finished its main transmission through chain and equal piece roller 3 axle head sprocket wheels, and its shaft end gear and all piece roller 2 shaft end gears engagements are finished and rotated changeing equal piece.As admant piece or metal derby by the time, all piece roller 2 axle end bearing seats are subjected to force compresses spring 20, and admant piece or metal derby are passed through.If its lump piece footpath is excessive, its bearing block collision block mechanism shuts down the outage of automatically controlled office, thereby has protected complete machine.

Format roll 13 axle head sprocket wheels link to each other with anti-sticking roller 5 axle head sprocket wheels and discharge wheel 18 axle head sprocket wheels respectively through chain, finish its transmission; For illustrating that this reality makes novel working condition, complete machine is divided into six districts of a.b.c.d.e.f.The a district is for entering the coal district, and by the diagram direction of arrow, all piece roller 2,3 rotates.(piece directly＜20mm) enters the c district through equal piece fire coal later, by the gravity effect, fire coal falls into discharge wheel 18 upper cavity, discharge wheel 18 rotates in the direction of arrows, make it contain the coal chamber and enter bar grid formula sieve bend 8, at this moment, anti-sticking roller 5 rotates in the direction of arrows, make coal-fired plane and the same cylinder of its excircle in discharge wheel 18 chambeies, eliminated owing to exceed the stuck phenomenon of coal cinder or the stone and the sieve bend 8 on its face of cylinder.Thereby avoided the mechanical breakdown that produces therefrom.Rotation along with discharge wheel, because gravity effect, to make fine coal (particle diameter＜14mm) separate rapidly with lump coal (particle diameter＜15 ∽ 20mm), when discharge wheel 18 Sheng coal chambeies go to f district, lump coal district, lump coal is because the gravity effect, fall on the fire grate through the f district, fine coal is after sieve bend 8 falls to d district, fine coal district, enter format roll 12, between 13, format roll 12,13 rotate in the direction of arrows, make coal powder formation fall to e district, moulded coal district, moulded coal drops on the following fire grate, because fire grate is pressed direction of arrow operation among the figure, therefore, form lump coal following on fire grate, moulded coal is at last even coal-fired layer.Because moulded coal is last, it is made up of fine coal, is convenient to combustion just and catches fire, and has improved ignition speed, thereby has prolonged the burning of coal time on the whole fire grate, improved burn-off rate, and lump coal has reduced the mechanical coal leakage quantity and the gas permeability enhancing of fire grate down.So this stratified combustion structure is very favourable to the stoker fired grate grate firing, has both solved the over-emitting black exhaust problem, and is energy-conservation again, improved the thermal efficiency.

Screw mandrel 21 can be adjusted the pressure of spring 20, can make the crushing force of equal piece roller 2,3 obtain adjusting like this.Screw mandrel 17 can be adjusted to the pressure of forming roll 12,13, can make the moulded coal bulk density obtain adjusting like this, to satisfy the needs of best combustion after-flame.

The b district of coal bunker 1 is dress dry solid desulfurizing agent (powdery) district.Dry powder shape desulfurizing agent enters the d district through discharge wheel 18 and sieve bend 8 and mixes with fine coal evenly bringing it into c district under the gravity effect and under the rotary action of anti-sticking roller 5, thereby finishes the automatic interpolation of solid desulfurating agent.

Desulfurizing agent displacement control valve door 4, shown in arrow among the figure, can open open greatly little, thereby can be according to the different adding proportions of adjusting desulfurizing agent of the sulfur content of fire coal, thereby satisfy the qualified discharge requirement.

Deep bead 9 links to each other with the handwheel of worm-and-wheel gear through steel wire rope 7 and rope sheave 6, can adapt to its coal-fired layer thickness and adjust its height and closed chamber, prevents that its front portion from leaking out, and guarantees the high ignition temperature in stokehold.Help coal-fired catching fire and burning, prevented that again format roll is overheated.

The dynamical system transmission: initiatively format roll 12 axle head positive couplings and speed reducer output shaft link.Reductor input shaft end pulley concial disk is through V belt and the buncher axle head pulley concial disk formation power drive system that links.

Coal-fired layer thickness adjustment: by adjusting the rotating speed that motor speed changes over forming roll, the rotating speed height, the coal seam is thick, rotating speed is low, balk.Can require to adjust arbitrarily according to the fire grate speed of service and coal seam thickness, thereby can guarantee to reach optimal combustion state.

The utility model advantage is a lot, and the moulded coal volume reduces, and is conducive to after-flame; Be provided with equal piece roller, Lump coal breaking to the piece warp that is fit to the burning after-flame, the stuck discharge wheel of coarse coal and arc have been avoided again Sieve, alleviated the load of format roll, be conducive to again improve ratio of briquetting; The thickness that can control moulded coal reaches Bulk density is conducive to after-flame; The left-hand rotation of discharge wheel 18 makes and forms lump coal on the fire grate at lower, moulded coal In upper stratified combustion structure, make fuel bed ventilate, catch fire fast, sufficient combustion, thermal efficiency height, Greatly alleviated again mechanical damage coal amount; All settings of piece roller 2 bearings supporting precompression expansion bearing seat, Can effectively avoid the stuck phenomenon of ratchel and metal derby, and be provided with electromechanical protection device, guarantee Reliability of operation and security; The setting of anti-sticking roller had both prevented that lump coal from making discharge wheel and arc The stuck phenomenon of sieve, and itself and desulfurizing agent displacement control valve have formed the dry type desulfurizer powder Automatically discharge mechanism, thereby can realize dry desulfurization; The setting of barge board 9 had both been protected in the stove high Temperature has prevented that again format roll is overheated; Generally speaking, the improvement of the utility model mechanism design makes Briquette machine for use front boiler has reached the more satisfactory practical stage, becomes heating boiler and Industrial Boiler Realize the ideal equipment of coal-fired clean burning.

Claims

1. a coal briquette machine before boiler comprises coal bunker, frame, equal piece roller, sieve bend, discharge wheel, format roll, it is characterized in that:

1. vertically add a dividing plate 23 in the coal bunker 1, coal bunker is divided into a.b district two parts;

3. the d district below b district and the discharge wheel 18 is connected.

2. according to the coal briquette machine before boiler of claim 1 art, it is characterized in that: all be provided with spring 20 in the bearing bracket stand 24 of piece roller 2, spring 20 left ends touch with the live bearing seated connection of equal piece roller 2, and the other end of spring 20 is fixed on the spring base 22, and spring base 22 contacts with screw mandrel 21.