CN204478509U - A kind of heat-absorbing structure of inner bag biomass boiler - Google Patents

Abstract

The utility model relates to a heat-absorbing structure of a biomass boiler with a liner. The biomass boiler with a liner includes a heat exchange furnace, a particle fuel tank, a water tank, and a smoke exhaust pipe. The left side of the heat exchange furnace is provided with a particle fuel tank. There is a hopper inside the fuel tank, and a screw feeder at the lower part of the hopper. The discharge end of the screw feeder extends out of the granular fuel tank and communicates with the combustion chamber in the heat exchange furnace. There are three There are three sets of water tanks, and the bottoms of the three sets of water tanks are respectively equipped with burners. The three spaces enclosed by the three sets of water tanks and the bottom burners in the heat exchange furnace are the first combustion chamber, the second combustion chamber and the third combustion chamber. , The walls of the first combustion chamber, the second combustion chamber, and the third combustion chamber are respectively provided with heat-absorbing fins facing the centers of the respective combustion chambers.

Description

Heat-absorbing structure of a liner biomass boiler

technical field

The utility model relates to the manufacturing field of renewable energy utilization equipment, in particular to a heat-absorbing structure of a biomass boiler with a liner.

Background technique

At present, due to the energy shortage and environmental degradation caused by a large number of fossil fuels, biomass energy has become the trend of today's development. However, the traditional boiler works in a single-tube type, and the exhaust gas after combustion is directly discharged from the self-supporting chimney. The heating area is small, the combustion is insufficient, and the air pollution is serious, resulting in waste of resources. For this reason, horizontal fire tubes have appeared, but due to the small diameter of the fire tubes, they are easy to scale, the smoke of the fire tubes is blocked and the heat exchange rate is low, which seriously affects the full utilization of resources.

Contents of the invention

The purpose of this utility model is to provide a heat-absorbing structure of a liner biomass boiler in order to avoid the problems of small heating area, low heat exchange rate and easy fouling in the chimney described in the background technology.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a heat-absorbing structure of a liner biomass boiler, the liner biomass boiler includes a heat exchange furnace, a granular fuel tank, a water tank, a smoke exhaust pipe, and a heat exchange furnace There is a pellet fuel tank on the left side, a hopper is arranged inside the pellet fuel tank, and a screw feeder is provided at the lower part of the hopper. There are three sets of water tanks in the heat exchange furnace from left to right, and burners are installed at the bottom of the three sets of water tanks. The three spaces enclosed by the three sets of water tanks and the burners at the bottom of the heat exchange furnace are respectively the first combustion chamber. , the second combustion chamber, the third combustion chamber, the walls of the first combustion chamber, the second combustion chamber, and the third combustion chamber are respectively provided with heat-absorbing fins towards the center of the respective combustion chambers.

For an optimization of the present utility model, the inner edges of the heat absorption bands are all inclined downward.

For an optimization of the utility model, a first combustion chamber is provided in the first water tank, a fuel feeding port is provided on the bottom side of the first combustion chamber, and a first heat transfer smoke port is provided on the top side of the first combustion chamber. The top of the room is provided with an inwardly convex water tank structure. The second water tank is provided with a second combustion chamber. The vertical center of the second combustion chamber is provided with a flue. There is a second heat transfer smoke port on the top side of the chamber, the first heat transfer smoke port is connected to the second heat transfer smoke port through the flue, the third water tank is provided with a smoke exhaust pipe, and the lower end of the smoke exhaust pipe is connected to the third combustion chamber. The bottom runs through, and its upper end runs through the third water tank and the top of the heat exchange furnace to communicate with the outside world. The third heat transfer port is provided on the top side of the third combustion chamber in the third water tank, and the second combustion chamber in the second water tank. There is a fourth heat transfer smoke port communicated with the third heat transfer smoke port, the wall forming the second flue, the wall forming the smoke exhaust pipe in the third water tank, the wall of the first water tank, the wall of the second water tank The walls are all hollow water tank structures, and the first water tank, the second water tank and the third water tank are all connected through water pipes, and the bottom of each water tank is provided with a sewage outlet.

For an optimization of the utility model, an exhaust fan is provided at one end of the exhaust pipe outside the heat exchange furnace.

For an optimization of the present utility model, a chamber and a drawer for containing slag generated after fuel combustion are provided under each combustion chamber.

For an optimization of the present utility model, a peep hole for observing fuel combustion in the first combustion chamber is provided on the outside of the heat exchange furnace located in the first combustion chamber.

For an optimization of the utility model, the top of the heat exchange furnace is provided with a water pressure gauge 3 and a water temperature gauge connected to the water tank, and a pressure relief valve 6 connected to the combustion chamber.

For an optimization of the utility model, the right side of the heat exchange furnace is provided with a water inlet connected to the third water tank.

For an optimization of the utility model, the left side of the heat exchange furnace is provided with a water outlet connected to the first water tank.

For an optimization of the present utility model, a blower is provided on the bottom side of the first combustion chamber.

For an optimization of the utility model, the screw feeder includes a motor and a screw.

Compared with the background technology, the utility model has the advantages of reasonable structure, large heating area of the water tank in the combustion chamber, and high heat transfer efficiency; it is easy to take away the smoke and dust in the combustion chamber, and the combustion chamber is not easy to accumulate soot; it is easy to drain scale and easy to clean; it is not easy to occur Cross-fire phenomenon of fuel tanks; high fuel utilization rate, environmental protection and energy saving.

Description of drawings

Figure 1 is a schematic diagram of the internal structure of the inner tank biomass boiler.

Figure 2 is a schematic diagram of the appearance of the inner tank biomass boiler.

Fig. 3 is a schematic diagram of heat exchange in the water tank of the inner tank biomass boiler.

Detailed ways

Embodiment 1: Refer to Figures 1-3. A heat-absorbing structure of a biomass boiler with a liner, the biomass boiler with a liner includes a heat exchange furnace 1, a particle fuel tank 2, a water tank 3, and a smoke exhaust pipe 4, and the left side of the heat exchange furnace 1 is provided with a particle fuel tank 2 The pellet fuel tank 2 is provided with a hopper 21, and the bottom of the hopper 21 is provided with a screw feeder 23. The discharge end of the screw feeder 23 extends out of the pellet fuel tank 2 and communicates with the combustion chamber in the heat exchange furnace 1. There are three sets of water tanks in the exchange furnace 1 from left to right, and the bottoms of the three sets of water tanks are respectively provided with burners 31, and the three spaces enclosed by the three sets of water tanks and the burners at the bottom of the heat exchange furnace 1 are respectively the first The walls of the first combustion chamber 8 , the second combustion chamber 9 , the third combustion chamber 10 , the first combustion chamber, the second combustion chamber and the third combustion chamber are respectively provided with heat-absorbing fins 41 towards the centers of the respective combustion chambers. The inner edges of the heat-absorbing belts 41 are all inclined downwards.

The first water tank 5 is provided with a first combustion chamber 8, the bottom side of the first combustion chamber 8 is provided with a fuel feeding port 11, and its top side is provided with a first heat transfer smoke port 12, and the top of the first combustion chamber 8 is An inwardly protruding water tank structure is provided downwards, and a second combustion chamber 9 is arranged in the second water tank 6, and a flue 13 is arranged in the vertical center of the second combustion chamber 9, and the bottom of the flue 13 is connected with the bottom of the second combustion chamber 9. The second heat transfer port 14 is provided on the top side of the second combustion chamber 9, the first heat transfer port 12 and the second heat transfer port 14 are connected through the flue, and the third water tank 7 is provided with a smoke exhaust pipe 15. The lower end of the smoke exhaust pipe 15 communicates with the bottom of the third combustion chamber 10, and its upper end penetrates the third water tank 7 and the top of the heat exchange furnace 1 to communicate with the outside world. Three heat transfer smoke ports 16, one side of the second combustion chamber 9 in the second water tank 6 is provided with a fourth heat transfer smoke port 17 communicated with the third heat transfer smoke port 16, the walls forming the flue 13, The walls constituting the exhaust pipe 4 in the third water tank 7, the walls of the first water tank 5, and the walls of the second water tank 6 are all hollow water tank structures. The first water tank 5, the second water tank 6, and the third water tank 7 are all connected through water pipes, and the bottom of each water tank is provided with a sewage outlet 17. The exhaust pipe 4 is provided with an exhaust fan 18 at one end outside the heat exchange furnace. The bottom of each combustion chamber is provided with a cavity and a drawer 19 for accommodating the slag produced after fuel combustion. A peep hole 20 for observing fuel combustion in the first combustion chamber 8 is provided on the outside of the heat exchange furnace 1 located at the first combustion chamber 8 . A water pressure gauge 22 and a water temperature gauge 24 connected to the water tank, and a pressure relief valve 25 connected to the combustion chamber are respectively provided on the top of the heat exchange furnace 1 . The right side of the heat exchange furnace 1 is provided with a water inlet 26 communicating with the third water tank 7 . A water outlet 27 connected to the first water tank 5 is provided on the left side of the heat exchange furnace 1 . A blower 28 is provided on the bottom side of the first combustion chamber 8 . The screw feeder 1 includes a motor 29 and a screw 30 .

It should be understood that: although the present embodiment has described the utility model in more detail, these explanations are only a simple description of the utility model, rather than a limitation of the utility model, and any content that does not exceed the essence of the utility model Inventions and creations all fall within the protection scope of the present utility model.

Claims (2)

1. the heat-absorbing structure of an inner bag biomass boiler, described inner bag biomass boiler comprises heat-exchanging furnace, granular fuel case, water tank, smoke exhaust pipe, granular fuel case is provided with on the left of heat-exchanging furnace, hopper is provided with in granular fuel case, hopper bottom is provided with feed screw, it is outer and be communicated with in heat-exchanging furnace inner combustion chamber that the discharge end of feed screw stretches out granular fuel case, three groups of water tanks are provided with from left to right in described heat-exchanging furnace, the bottom of three groups of water tanks is respectively equipped with burner, three spaces that in heat-exchanging furnace, three groups of water tanks and combustion bottom burner thereof enclose structure are respectively the first combustion chamber, second combustion chamber, 3rd combustion chamber, it is characterized in that the first combustion chamber, second combustion chamber, three-barreled wall is respectively equipped with towards the heat absorbing sheet at center, respective combustion chamber.

2. the heat-absorbing structure of inner bag biomass boiler according to claim 1, is characterized in that: the interior edge of individual heat absorbing sheet is all downward-sloping.