CN2926835Y - Electromagnetic vibration fire grate - Google Patents

Abstract

The utility model discloses an electromagnetic vibrating grate which is composed of a vibrating grate, an electromagnetic vibrator and a vibration absorber, wherein, the vibrating grate comprises a water-cooling wall at the two sides and a grate bar. Four separate sealed air chambers which are arranged at the bottom of the grate are communicated with a grate ventilating hole and an air transmitting pipe, while the electromagnetic vibrator can make the grate vibrate regularly, and realize the functions of quantitative feeding, sectional dry distillation, burning and slag discharging. The vibration absorber is composed of four spiral springs, and is positioned between the grate and the base, while a blowpipe is arranged on the grate wall in the front of the grate and the blowpipe can blow the preheated gas to the burning area. The utility model not only can improve the temperature of the fuel layer and the hearth and prevent accidents such as flameout and blowing-out of the furnace from occurring due to coking, but also can burn the inferior coal with high ash content and open up a new way to new energy sources.

Description

A kind of electromagnet-vibrating firegrate

Technical field:

The utility model relates to a kind of boiler, particularly a kind of electromagnet-vibrating firegrate.

Background technology:

Grate furnace (being grate furnace) and chamber right stove (as coal-powder boiler) are the important combustion apparatus of boiler integral body, with the grate furnace is example: bunker coal on fire grate fast, combustion efficiency has just determined the operating efficiency of boiler completely, existing layer burner: as handwarmer, chain furnace, spreader stoker boiler, vibration stove grate furnace and reciprocating grate furnace, particularly use maximum stove kind one chain furnaces at present, exist the universal phenomena such as serious (coal and electric power), contaminated environment, inefficiency that waste energy in coal-fired process, wherein main cause is that fire grate structure is unreasonable.Existing layer burner fire grate has been obscured coal-fired flow process area boundary, causes furnace temperature in service low, and a large amount of flammable fixed carbon, fuel gas seriously run off.The operation combustion process of ature of coal on fire grate has very strict regionality and continuity, this is that physicochemical property by ature of coal is determined, so independent air compartment must be built in the relevant position below fire grate, and look coal, bed of material situation of change is adjusted each air compartment air quantity, to satisfy the needs of the burning of ature of coal on the affiliated area fire grate.Want continuous motion owing to fire grate, must cause both sides seriously to run wind, make fire grate bottom, air compartment upper end serious string wind, formed fire grate two ends wind-force surplus and the detuning phenomena of the middle wind-force deficiency of fire grate.(1) fire grate front end wind-force surplus can be taken away heat production and do a large amount of fuel gas that the slide district discharges, and volatile matter is discharged from flue, and volatile matter accounts for 10～15% of ature of coal total heat energy.Wind-force is strong excessively, and the coal breakage baffle plate is fired, burnt to ature of coal suddenly in this zone, forms coal breakage balk thickness ununiformity, influences grate firing coal effect; (2) fire grate tail end wind-force surplus, cold air are washed away and have been reduced the surplus combustion temperature of carbon granules (or nuclear) on the fire grate, and a large amount of carbon nuclears are extinguished, and discharge out of the furnace with lime-ash in the stove; (3) the fire grate postmedian is fierce combustion zone, from bottom air compartment wind-force deficiency, the red carbon strong oxidation reaction of just can not having an effect, add from the superfluous air quantity of afterbody and take away burner hearth and the auxilliary source high temperature of penetrating of fire arch, generate more carbonoxide, carbon monoxide, its potential heat energy accounts for fixed carbon total heat energy 70%, cause a part of combustion oxidation to emit heat energy and carbon dioxide, a part is just taken away by the superfluous air-flow of tail end, discharge out of the furnace and rapidly thermal decomposition generate carbon black and discharge chimney and cause atmosphere pollution, worsen surrounding enviroment, some is attached to the top layer coking of boiler heated metal, the coking body capacity of heat transmission has only 1/50～1/200 of the steel plate capacity of heat transmission, seriously influence pot body, water-cooling wall, the pyrotechnics pipe, water pipe and economizer heat absorption have reduced boiler thermal output.In addition, the coking body also absorbs pernicious gas in the flue gas, generates sulfuric acid, and corrosion boiler heating surface metal has reduced the boiler component working life.

The major part of fixed carbon has high-temperature coking character in the ature of coal, and ash content is constantly separated out in coal-fired process in the ature of coal, will be dissolved into shell as can not in time utilizing wind-force to wash away with Mechanical Crushing, these grey shells can dissolve with high temperature, also can be lower than 1200 when spending, the slagging of condensing, condensation process will a large amount of flammable red carbon or cinder be bundled together, form coal and slag coking body, the coking body can not burn away, discharge out of the furnace, cause the ature of coal serious waste, also take away heat in the stove, because of it stops up the ash discharge passage easily, need manpower to open the fire door mechanical removal, suck excessive cold air from fire door simultaneously and take away temperature the stove, also can cause the heat energy heavy losses.Grate furnace and chamber burner all can influence normal combustion because of coking reduces furnace temperature, all have the accident of flame-out blowing out to take place at any time.

Existing grate furnace fire grate is not just broken through burning low grade coal or coal cofiring function excellent, inferior on technical performance, so coal abandoned inferior occurs, cause energy significant wastage.Though bone coal, gangue contain 50% left and right sides ash content, but 2000 kilocalories of/kilogram heat energy that also contain less expensive, because of without any the grate furnace kind with it as main combustion or join the combustion energy, must not be used for taking hill, farmland, the accumulation of ditch river, landfill, abandonment, and along with its amount of adopting is on the increase, formed everywhere and to have piled up for suffering from, these coals inferior be caught in the rain all the year round Exposure to Sunlight, catamorphism are unfeelingly destroyed peripheral green vegetation and ecological environment.

Summary of the invention:

Technical problem to be solved in the utility model provides a kind of electromagnet-vibrating firegrate, this fire grate adopts the two cold junction structures of two wind, can mate in various model grate furnaces, realized that quantitative conveying is coal-fired, the subregion burning, the timely function that lime-ash is discharged out of the furnace, and can improve fuel bed and fire box temperature, prevent that coking from causing the generation of flame-out blowing out accident, the high ash content that can also burn coal inferior, for new forms of energy developings by way of, the utility model is to realize like this, the utility model is by vibrating-grate stoker, electromagnetic vibrator, three parts of shock absorber are formed, wherein vibrating-grate stoker is made up of two side walls and fire grate double-edged fine-toothed comb, it is characterized in that (1) fire grate bottom forms four by " T " word crossbeam that supports fire grate and curved plate and independently seal air compartment, four independently seal air compartment and communicate with top furnace grate ventilation hole and wind conveying pipe road, bottom respectively, and place, wind conveying pipe road is provided with air quantity and regulates flashboard; (2) electromagnetic vibrator is made up of casing, electromagnetic core and coil, armature, one group of leaf spring and yoke and control circuit, be fixed in the middle of the yoke and the leaf spring group at casing two ends, upper and lower plastid elasticity is connected, the fire grate horizontal positioned, the yoke vertical line is along the defeated coal direction inclination certain angle of fire grate, yoke and be fixed on the electromagnet armature of lower end and fire grate is formed the plastid that shakes, casing and be fixed on casing with the electromagnetic core of armature parallel position and coil composition under the plastid that shakes; (3) shock absorber is made up of four helical springs, and the fire grate both sides respectively have two, and places between fire grate body and the base; (4) be provided with blower on the furnace wall of fire grate front, this blower links to each other with hair-dryer, and the height of blower is 25～45cm.

Circuit is connected the individual event AC power during work, control cabinet output controllable silicon halfwave rectifier electric energy, and lower half voltage is added on the iron-core coil, in iron core and armature slit, produce pulse-electromagnetic force, the plastid that shakes in the armature pulling moves along the iron core direction, and the leaf spring group produces distortion, storage elasticity energy.At negative half period, groups of springs discharges elastic energy, and the plastid that shakes in the promotion moves in the other direction along iron core.The electricity frequency changes positive-negative half-cycle with 50 times/second, on shake plastid with under the plastid that shakes do 3000 times/minute relative vibrations with same frequency.

When fire grate vibration acceleration vertical stress component greater than fire grate on during ature of coal acceleration of gravity, the first tool of ature of coal is thrown along parabolic path and is jumped forward on the fire grate, cause this, ature of coal is finished functions such as quantitative conveying, the dried slide in zone, burning, deslagging under the excited vibration effect that the fire grate dither produces.

Oscillation Amplitude is realized by adjusting electromagnet armature and iron core gap size, and ature of coal movement velocity and quantity change the realization of Oscillation Amplitude grate adjusting coal breakage flashboard by turn electromagnetic device switch.

Compared with prior art, the utility model has been realized the quantitative function coal-fired, that burn, in time lime-ash discharged out of the furnace in the subregion of carrying, and can improve fuel bed and fire box temperature, prevent that coking from causing the generation of flame-out blowing out accident, the high ash content of can also burning coal inferior, for new forms of energy opened up by way of.

Description of drawings:

Accompanying drawing 1 is the utility model front view

Accompanying drawing 2 is the A-A views in the accompanying drawing 1

Accompanying drawing 3 is this new-type circuit control charts

Specific embodiments:

The utility model is by vibrating-grate stoker 2, electromagnetic vibrator 8,4 three parts of shock absorber are formed, wherein vibrating-grate stoker is made up of two side walls 12 and fire grate double-edged fine-toothed comb, the fire grate bottom is formed four by " T " word crossbeam that supports fire grate and curved plate and is independently sealed air compartment 3,6,7,9, four independently seal air compartment and communicate with top furnace grate ventilation hole and wind conveying pipe road, bottom 14 respectively, place, wind conveying pipe road is provided with air quantity and regulates flashboard 15, electromagnetic vibrator is by casing 20, electromagnetic core and coil 17, armature 18, one group of leaf spring 19 and yoke and control circuit are formed, be fixed in the middle of the yoke and the leaf spring group at casing two ends, to go up, following plastid elasticity connects, the fire grate horizontal positioned, the yoke vertical line is along the defeated coal direction inclination certain angle of fire grate, yoke is formed the plastid that shakes with electromagnet armature that is fixed on the lower end and fire grate, casing and be fixed on casing with the electromagnetic core of armature parallel position and coil and form under the plastid that shakes, shock absorber is made up of four helical springs 4, the fire grate both sides respectively have two, and place between fire grate body and the base, on the furnace wall 11 of fire grate front, be provided with blower 10, this blower links to each other with hair-dryer, and the height of blower is 25～45cm.

Claims (1)

1, a kind of electromagnet-vibrating firegrate, form by vibrating-grate stoker, electromagnetic vibrator, three parts of shock absorber, wherein vibrating-grate stoker is made up of two side walls and fire grate double-edged fine-toothed comb, it is characterized in that (1) fire grate bottom forms four by " T " word crossbeam that supports fire grate and curved plate and independently seal air compartment, four independently seal air compartment and communicate with top furnace grate ventilation hole and wind conveying pipe road, bottom respectively, and place, wind conveying pipe road is provided with air quantity and regulates flashboard; (2) electromagnetic vibrator is made up of casing, electromagnetic core, coil, armature, one group of leaf spring and yoke and control circuit, be fixed in the middle of the yoke and the leaf spring group at casing two ends, upper and lower plastid elasticity is connected, the fire grate horizontal positioned, the yoke vertical line is along the defeated coal direction inclination certain angle of fire grate, the electromagnet armature that the yoke lower end is fixing and the connecting plate of upper end fixed grate and fire grate are formed the plastid that shakes, casing and be fixed on casing with the electromagnetic core of armature parallel position, coil composition under the plastid that shakes; (3) shock absorber is made up of four helical springs, and the fire grate both sides respectively have two, and places between fire grate body and the base; (4) be provided with blower on the furnace wall of fire grate front, this blower links to each other with hair-dryer, and the height of blower is 25～45cm.