CN2262217Y - Positive and negative two way atomospheric water heating boiler - Google Patents

Abstract

The utility model relates to an improved atmospheric hot water boiler with forward and backward two-way combustion, comprising a boiler body, a water cooling wall pipe, a wing-shaped smoke passage, a water cooling fire grate, a cast-iron fire grate, a second combustion chamber, a fire door, an ash falling chamber and a screw thread smoke pipe. The utility model is characterized in that the left side of the water cooling fire grate is provided with a middle partition wall; the lower left part of the middle partition plate is provided with the stationary type cast-iron fire grate and the ash falling chamber; the stationary type cast-iron fire grate is communicated with the upper part of the boiler hearth to form a first combustion chamber; the back part of the inner cavity of the boiler body is provided with an inertial dust removal chamber; the base seat of the boiler body is provided with a blower fan connecting opening. The utility model has the advantages of high heat efficiency, energy saving, safety, faulty coal combustion, compact structure, convenient installation and maintenance, and simple operation.

Description

Positive and negative bilateral-firing normal-pressure hot-water boiler

The utility model is the positive and negative bilateral-firing normal-pressure hot-water boiler of a kind of improved single drum longitudinal, belongs to combustion apparatus.

The miniature boiler major part of Chu Shouing is that horizontal and vertical hand bakes and decides fire grate or double-layer grate in the market, it is very superior that hand bakes the ignition condition of deciding fire grate, but the coal that makes new input owing to this frame mode burns under the state of anoxic and makes chimney over-emitting black exhaust, contaminated environment.Double-layer grate can satisfy country basically to requirement on environmental protection; but coal is dropped on the grate of water-cooled grate; air then passes through the coal seam from top to bottom; flare is burnt downwards; forbidden to add new coal on the casting furnace grate of bottom; its fuel is mainly derived from the coal of being disclosed on the water-cooled grate of top, and these coals burn away until after-flame on casting furnace grate.Because the fractional cold of water-cooled grate is big, the burning of coal condition is bad, thus must burned coal, lump coal, can not burning inferior coal and mix coal.Thereby the user who has since on water-cooled grate burning inferior coal beat when missing of ignition, just coal is thrown on the casting furnace grate of bottom, with and lost the anti-burning meaning of double-layer grate.

The purpose of this utility model is to provide a kind of various good and bad coals that can fully burn, smoke abatement and dust control, energy-conservation and the positive and negative bilateral-firing normal-pressure hot-water boiler of new-type fast-assembling list drum longitudinal that the thermal efficiency is high.

Technical solution of the present utility model is: comprise body of heater 1, water screen tube 2, aerofoil profile flue 3, water-cooled grate 4, second combustion chamber 5, casting furnace grate 6, ash-falling chamber 7, rib-loop smoke pipe 8, fire door 14,15, shoot door 16, it is characterized in that being provided with the mid-board 9 a little more than water-cooled grate 4 one in the left side of water-cooled grate 4, the lower left of mid-board 9 is provided with fixed casting furnace grate 10 and ash-falling chamber 11, and fixed casting furnace grate 10 communicates with furnace chamber top and forms first combustion chamber 12, the rear portion of body of heater 1 inner chamber is provided with inertial dust collection chamber 13, and the base of body of heater below is provided with air blast interface 21.

Advantage of the present utility model is: because combustion parts has increased the fixed casting furnace grate of mid-board and left side on the basis that has kept double-layer grate structure of the prior art, make this stove be divided into and arranged on left and right sides, the left side is a forward combustion, have and just burn the whole advantages that had, can give full play to that just to burn ignition condition superior, coal adaptability is strong, and grate heat release rate is big, advantages such as volume is little, and capacity is big.The left side high-temperature flue gas that fire grate produced is crossed mid-board to right-hand part under air blast and air-introduced machine effect, burn once more when passing water-cooled grate, has not only eliminated black smoke, and has improved the grate temperature of water-cooled grate, increases burning velocity.The downward reverse burning of fuel on the water-cooled grate, unburnt fuel is fallen on the casting furnace grate and is burnt away, flame contact up and down, form high temperature combustion zone, make the general stove of the thermal efficiency exceed 20%, surpass the numerical value of national Specification, smoke discharge amount is lower than 20mg/Nm ³, the effect of smoke abatement and dust control is splendid.In stove, be provided with the inertial dust collection chamber owing in design, adopted advanced positive and negative bilateral-firing mode and advanced heat transfer technology, wing flue, air blast and rib-loop smoke pipe to reach, employing balanced draft in service, both strengthened burning of coal, reduced the unburnt loss of gas, also reached the purpose of smoke abatement and dust control, owing to adopt positive and negative combustion system, needn't use deduster simultaneously.In a word, the utility model volume is little, and compact conformation is easy and simple to handle, and the some water capacity is easy, quick heating, and obvious energy conservation, installation and maintenance are convenient, and security performance is good, but burning inferior coal improves the mutual work situation of stoker.

Following accompanying drawing has been described embodiment of the present utility model.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an internal structure schematic diagram of the present utility model;

Fig. 3 is the A-A profile of Fig. 2;

Fig. 4 is that the D of Fig. 2 is to view.

Below in conjunction with accompanying drawing the utility model is described in detail.As shown in the figure, body of heater 1 of the present utility model, water screen tube 2, wing flue 3, water-cooled grate 4, second combustion chamber 5, casting furnace grate 6, ash-falling chamber 7, rib-loop smoke pipe 8, fire door, water return outlet, structure such as delivery port and atmospheric communicating pipe and prior art are identical, improvements of the present utility model are to have put the mid-board 9 a little more than water-cooled grate 4 one in the left side of water-cooled grate 4, the lower left of mid-board 9 is provided with fixed casting furnace grate 10 and ash-falling chamber 11, fixed casting furnace grate 10 communicates with furnace chamber top and forms first combustion chamber 12, the rear portion of body of heater 1 inner chamber is provided with inertial dust collection chamber 13, and the base of body of heater below is provided with air blast interface 21.In the present embodiment, mid-board 9 usefulness refractory concretes are made, the combustion system of the fixed casting furnace grate 10 of its lower left quarter setting is a forward combustion, the ash-falling chamber 11 of bottom also is air inlet one time, the top of furnace chamber communicates with the left side casting furnace grate and forms first combustion chamber, being water-cooled grate 4 above the right-hand part of furnace chamber, is casting furnace grate 6 below, and the centre is second combustion chamber 5.The left side high-temperature flue gas that fire grate produced is crossed mid-board 9 under air blast and air-introduced machine effect, burn once more when passing water-cooled grate 4, not only eliminated black smoke, also strengthened burning of coal inferior on the water-cooled grate, and improved the grate temperature of water-cooled grate, increase burning velocity.The downward reverse burning of fuel on the water-cooled grate, there is a chi long at the middle part flare, fuel is when burning, because particle constantly dwindles or during loosening coal seam, unburnt fuel is fallen on the casting furnace grate 6 burnt away, flame contact up and down forms i.e. second combustion chamber 5 of high temperature combustion zone, the bottom is an ash-falling chamber 7, also is the secondary air mouth.Flame and high-temperature flue gas enter the inertial dust collection chamber 13 at rear portion by second combustion chamber 5, enter aerofoil profile flue 3, rib-loop smoke pipe 8 after washing away burning, enter atmosphere through the air-introduced machine chimney.

In the utility model, also be provided with and fixed cast-iron fire grate 10 and ash-falling chamber's 11 matching used fire door 17 and shoot doors 18, on body of heater 1 side, be provided with shoot door 19 and the shoot door 20 that use inertial dust collection chamber 13 in the left side in body of heater 1 front.Among Fig. 1,14,15,16 is original and water-cooled grate 4, casting furnace grate 6 and ash-falling chamber's 7 matching used fire doors of the utility model, and 22 is water return outlet, and 23 is delivery port, and 26 is rib-loop smoke pipe shoot door, and 27 is wing flue shoot door.Among Fig. 3,24 is atmospheric communicating pipe, and 25 is the smoke box interface.

Claims (2)

1, a kind of positive and negative bilateral-firing normal-pressure hot-water boiler, comprise body of heater (1), water screen tube (2), aerofoil profile flue (3), water-cooled grate (4), second combustion chamber (5), casting furnace grate (6), ash-falling chamber (7), rib-loop smoke pipe (8), fire door (14,15), shoot door (16), it is characterized in that being provided with together mid-board (9) a little more than water-cooled grate (4) in the left side of water-cooled grate (4), the lower left of mid-board (9) is provided with fixed casting furnace grate (10) and ash-falling chamber (11), fixed casting furnace grate (10) communicates with furnace chamber top and forms first combustion chamber (12), the rear portion of body of heater (1) inner chamber is provided with inertial dust collection chamber (13), and the base of body of heater below is provided with air blast interface (21).

2, positive and negative bilateral-firing normal-pressure hot-water boiler according to claim 1, it is characterized in that the positive left side of body of heater (1) is provided with and fixed cast-iron fire grate (10) and the matching used fire door of ash-falling chamber (11) (17), shoot door (18), body of heater (1) side is provided with the shoot door (19,20) of inertial dust collection chamber (13) use

Images