CN201293453Y - Twice re-burning ambient pressure water boiler - Google Patents

Abstract

Two time back-turning type ambient pressure hot water boiler belongs to boiler product. A middle partition plate is arranged between the smoke-box and the auxiliary combustion chamber in the inner container. The lower end of the middle partition plate is fixed with the inner container bottom. A back partition plate is assembled in the smoke box. The upper end of the back partition plate is fixed with the wall surface at the top of the inner container. The flame and the flue two time back-turning labyrinth heat change path structure is formed by a front partition plate and a middle partition plate, a middle partition plate and a back partition plate in the inner container. A single row water pipe bundle is assembled in the auxiliary combustion chamber. The two row water pipe bundle is respectively assembled in the front chamber and the back chamber of the back partition plate in the smoke box. The boiler has a novel and reasonable design, reliable operation, good work action, high thermal efficiency, energy saving and environment protection.

Description

Twice downward-burning type normal-pressure hot-water boiler

Technical field

The utility model belongs to boiler product, relates generally to a kind of normal-pressure hot-water boiler.

Background technology

At present, be that the normal-pressure hot-water boiler of fuel is still in China's domestic life heating and uses very general boiler shape with coal, and model, of a great variety.But, no matter its heat exchange basic structure of coal fuel normal-pressure hot-water boiler of which kind of model, kind is all identical, the mode that promptly adopts the tube bank of coal flame and high-temperature flue gas and cold water to carry out heat exchange, because the problem on the structural design, its heat exchange area is less, and heat exchange path is shorter, the boiler hot exchange efficiency is reduced, cause energy waste, and not clean-burning coal particles is discharged in the atmosphere, cause environmental pollution.

Summary of the invention

The purpose of this utility model is exactly the problem that exists at above-mentioned prior art, and design provides a kind of twice downward-burning type normal-pressure hot-water boiler, reaches raising boiler hot exchange efficiency, saves the energy, reduces operating cost, alleviates the purpose of environmental pollution.

Basic design of the present utility model is, twice downward-burning type normal-pressure hot-water boiler comprises base, furnace shell, inner bag, preceding dividing plate, subsidiary combustion chamber, smoke exhaust pipe, main chamber, the smoke-box cleaning door, secondary combustion grate, the subsidiary combustion chamber cleaning door, the main chamber cleaning door, main burning furnace row and lower furnace door, upper furnace door, between the smoke-box of inner bag and subsidiary combustion chamber, dispose median septum, the lower end of this median septum and inner bag bottom are affixed, in smoke-box, dispose rear bulkhead, the upper end of this rear bulkhead is connected on the wall of inner bag top, preceding dividing plate and median septum, common twice of constituting flame and flue gas in inner bag of median septum and rear bulkhead returns and burns labyrinth type heat exchange path structure; Equipped single festoon in subsidiary combustion chamber, equipped respectively double festoon in the chamber before and after the rear bulkhead in smoke-box.

The utility model adopts and become the mobile heat exchange structure of labyrinth type high-temperature flue gas in smoke-box, return the burning heat exchange method twice that has realized high-temperature flue gas, prolonged heat exchange path, cooperate single festoon and double festoon to load in mixture structure, guaranteed that flow of flue gas is unobstructed smoothly, help coal-fired fully burning, have novel in design rationally, use reliable, transaction capabilities is good, the thermal efficiency is high, the characteristics of energy-conserving and environment-protective.

Description of drawings

Accompanying drawing is twice downward-burning type normal-pressure hot-water boiler overall arrangement structural representation.

Piece number explanation among the figure:

1, furnace shell, 2, inner bag, 3, preceding dividing plate, 4, single festoon, 5, subsidiary combustion chamber, 6, explosion-proof apparatus, 7, double festoon, 8, smoke exhaust pipe, 9, median septum, 10, smoke-box, 11, upper furnace door, 12, main chamber, 13, rear bulkhead, 14, smoke-box cleaning door, 15, secondary combustion grate, 16, subsidiary combustion chamber cleaning door, 17, base, 18, main chamber cleaning door, 19, main chamber fire grate, 20, lower furnace door.

The specific embodiment

Below in conjunction with accompanying drawing the utility model optimum implementation is described in detail.Twice downward-burning type normal-pressure hot-water boiler comprises base 17, furnace shell 1, inner bag 2, preceding dividing plate 3, subsidiary combustion chamber 5, smoke exhaust pipe 8, main chamber 12, smoke-box cleaning door 14, secondary combustion grate 15, subsidiary combustion chamber cleaning door 16, main chamber cleaning door 18, main burning furnace row 19 and lower furnace door 20, upper furnace door 11, configuration median septum 9 between the smoke-box 10 of inner bag 2 and subsidiary combustion chamber 5, the lower end of this median septum 9 and inner bag 2 bottoms are affixed, configuration rear bulkhead 13 in smoke-box 10, the upper end of this rear bulkhead 13 is connected on the inner bag 2 top walls, preceding dividing plate 3 and median septum 9, median septum 9 returns with rear bulkhead 13 common twice of constituting flame and flue gas in inner bag 2 and burns labyrinth type heat exchange path structure; Equipped single festoon 4 in subsidiary combustion chamber 5, equipped respectively double festoon 7 in the chamber, rear bulkhead 13 front and back in smoke-box 10.Smoke exhaust pipe 8 is installed on smoke-box 10 terminal exhaust openings.Be positioned at furnace shell 1 top explosion-proof apparatus 6 is installed on smoke-box 10 top positions, this explosion-proof apparatus 6 is arranged in the through hole between furnace shell 1 and the inner bag 2.

Operation process is as follows: flame and high-temperature flue gas in the main chamber 12 enter in the subsidiary combustion chamber 5 through preceding dividing plate 3 lower ends, mix the heat exchange of finishing in the lump with single festoon 4 with flame in the subsidiary combustion chamber 5 and high-temperature flue gas after, high-temperature flue gas enters between the median septum 9 and rear bulkhead 13 of smoke-box 10 from median septum 9 upper ends, carry out heat exchange with double festoon 7, its high-temperature flue gas is entered between the rear bulkhead 13 and inner bag 2 rear walls of smoke-box 10 by rear bulkhead 13 lower ends again, finish last heat exchange operation with the double festoon 7 in it, finish low-temperature flue gas after the heat exchange and enter chimney from smoke exhaust pipe 8 and enter the atmosphere.The lime-ash that main chamber 12, subsidiary combustion chamber 5 and smoke-box 10 sink goes out clearly from main chamber cleaning door 18, subsidiary combustion chamber cleaning door 16 and smoke-box cleaning door 14 respectively.When pot inner pressure surpassed safety value, explosion-proof apparatus 6 was finished pressure release effect in the stove automatically, guaranteed boiler operatiopn safety.

Claims (3)

1, a kind of twice downward-burning type normal-pressure hot-water boiler, comprise base (17), furnace shell (1), inner bag (2), preceding dividing plate (3), subsidiary combustion chamber (5), smoke exhaust pipe (8), main chamber (12), smoke-box cleaning door (14), secondary combustion grate (15), subsidiary combustion chamber cleaning door (16), main chamber cleaning door (18), main burning furnace row (19) and lower furnace door (20), upper furnace door (11), it is characterized in that between the smoke-box (10) of inner bag (2) and subsidiary combustion chamber (5), disposing median septum (9), lower end of this median septum (9) and inner bag (2) bottom are affixed, configuration rear bulkhead (13) in smoke-box (10), the upper end of this rear bulkhead (13) is connected on the wall of inner bag (2) top, preceding dividing plate (3) and median septum (9), median septum (9) returns with rear bulkhead (13) common twice of constituting flame and flue gas in inner bag (2) and burns labyrinth type heat exchange path structure; Equipped single festoon (4) in subsidiary combustion chamber (5), equipped respectively double festoon (7) in the chamber before and after the rear bulkhead (13) in smoke-box (10).

2, twice downward-burning type normal-pressure hot-water boiler according to claim 1 is characterized in that on the terminal exhaust opening of smoke-box (10) smoke exhaust pipe (8) being installed.

3, twice downward-burning type normal-pressure hot-water boiler according to claim 1, it is characterized in that being positioned on smoke-box (10) top position at furnace shell (1) top explosion-proof apparatus (6) is installed, this explosion-proof apparatus (6) is arranged in the through hole between furnace shell (1) and the inner bag (2).

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