CN2677762Y

CN2677762Y - Posive, back burning combined boiler

Info

Publication number: CN2677762Y
Application number: CN 200320111423
Authority: CN
Inventors: 付彦彬
Original assignee: Shuangyashan Sanjiang Atomospheric Pressure Hot Water Boiler Manufacturing Co
Current assignee: Shuangyashan Sanjiang Atomospheric Pressure Hot Water Boiler Manufacturing Co
Priority date: 2003-10-08
Filing date: 2003-10-08
Publication date: 2005-02-09
Anticipated expiration: 2013-10-08

Abstract

The utility model relates to a positive, back burning combined boiler, which is composed of a back burning boiler furnace and a positive burning boiler furnace. The back burning boiler furnace is composed of fire bars, water cooling grate pipes, a water cooling wall pipe, flue walls and a water jacket. The fire bars are arranged at the lower part of the furnace in parallel according to the air intake demandr; an ash chamber is arranged at the bottom; gaps are left among the water cooling grate tubes which are arranged between the flue wall of the upper part of the fire bars and the spacing wall of the positive burning boiler furnace; the flue wall is embedded with the water cooling wall pipe which is corresponding to one side of the water jacket. The positive burning furnace is composed of a water jacket, the spacing wall and fire bars. The fire bars are arranged between the water jacket and the spacing wall; an ash chamber is provided at the lower part; the spacing wall whose middle is provided with the water cooling wall pipe is made of fire resistant materials. The utility model makes up the defects that the double grates back burning boiler has slow combustion speed and the upper part of the water cooling grate has low temperature, which largely improves the efficiency of the boiler and solves the problem that the positive burning boiler contaminates the environment.

Description

Positive and negative burning composite boiler

Affiliated technical field:

The utility model relates to the positive and negative burning form of boiler combination technique.

Background technology:

Though the boiler with two-layer fire grates smoke effect is remarkable, because water-cooled grate upper space temperature is lower, combustion process is slow, and undercapacity only plays the effect of coal bin; Positive burning boiler fire box temperature height, burning is strong, but it is bad to eliminate smoke, and does not meet environmental requirement.

For overcoming the deficiency that the slow undercapacity of boiler with two-layer fire grates combustion process, the low and positive burning boiler of water-cooled grate top furnace temperature do not meet environmental requirement, the utility model provides a kind of positive and negative burning boiler combination technique, utilize the flue gas that is just burning part through the burning once more of anti-burning part, both played smoke elimination effect effectively, simultaneously, because the high-temperature flue gas that is just burning enters the upper space of the cool fire grate of anti-burning part water, improve its space temperature, impelled coal to accelerate burning, become a new combustion chamber, improve radiation heat release and boiler output.

The technical scheme in the invention for solving the technical problem is to be made of back firing boiler burner hearth and positive burning boiler burner hearth, the back firing boiler burner hearth is by fire bars, water-cooled grate tube, water screen tube, walling of flue, water jacket is formed, fire bars is parallel to lower furnace portion by the height of air intake requirement, the bottom is an ash chamber, leaves the gap between each pipe of water-cooled grate tube, is arranged in parallel within fire bars top walling of flue and is just burning between the spaced walls, the walling of flue iron chains have water screen tube corresponding with a water jacket, just burning burner hearth by water jacket, division wall, fire bars is formed, the fire bars parallel is placed between water jacket and the division wall, the bottom is divided into ash chamber, and division wall is made by refractory material, and the centre accompanies water screen tube

The utility model beneficial effect is both to have remedied the defective that the boiler with two-layer fire grates burning is slow, the water-cooled grate upper temp is low, increases boiler output effectively, has solved the difficult problem of positive burning boiler contaminated environment again.

Below in conjunction with accompanying drawing the utility model is further specified

Fig. 1 is the utility model structure chart.

The specific embodiment:

According to shown in Figure 1, the utility model is to be made of back firing boiler burner hearth and positive burning boiler burner hearth, the back firing boiler burner hearth is by fire bars 4, water-cooled grate tube 2, water screen tube 3, walling of flue 1, water jacket 6 is formed, fire bars 4 is parallel to lower furnace portion by the height of air intake requirement, the bottom is an ash chamber 10, leave the gap between water-cooled grate tube 2 each pipe, be arranged in parallel within fire bars 4 top walling of flues 1 and just burning between the spaced walls 5, walling of flue 1 iron chains have water screen tube 3 corresponding with a water jacket 6, are just burning burner hearth by water jacket 6, division wall 5, fire bars 7 is formed, and fire bars 7 parallel are placed between water jacket 6 and the division wall 5, and the bottom is divided into ash chamber 9, division wall 5 is made by refractory material, and the centre accompanies water screen tube 8.The high-temperature flue gas that is just burning burner hearth during burning enters anti-its space temperature of burning furnace water cooling fire grate 2 upper spaces through division wall 5, makes this space become a new combustion chamber.

Claims

1, just, the anti-composite boiler that burns is to be made of back firing boiler burner hearth and positive burning boiler burner hearth, it is characterized in that the back firing boiler burner hearth is by fire bars, water-cooled grate tube, water screen tube, walling of flue, water jacket is formed, fire bars is parallel to lower furnace portion by the height of air intake requirement, the bottom is an ash chamber, leaves the gap between each pipe of water-cooled grate tube, is arranged in parallel within fire bars top walling of flue and is just burning between the spaced walls, the walling of flue iron chains have water screen tube corresponding with a water jacket, just burning burner hearth by water jacket, division wall, fire bars is formed, the fire bars parallel is placed between water jacket and the division wall, the bottom is divided into ash chamber, and division wall is made by refractory material, and the centre accompanies water screen tube.