CN211011482U - A biomass pellet heating stove - Google Patents

Abstract

The utility model relates to a biomass pellet heating furnace, which comprises a fuel system, a combustion system, a warm air system and the like; biomass pellets are fed into a hopper through a feeding port, fed into a combustion chamber through a feeding screw, and generated under the heating action of an ignition rod. The material particles reach the ignition point and burn; the combustion air is inhaled by the suction pipe and distributed to the fuel by the air chamber arranged under the fire bed; the combustion flue gas passes through the heat exchange pipe and the flue gas turning chamber in turn under the action of the induced draft fan. Finally, it is discharged out of the furnace through the exhaust pipe; most of the dust is removed by the dust-containing flue gas under the action of the flue gas turning chamber and the ash blocking plate; the ash hopper collects the ash after the combustion of the particles in the combustion chamber; The heat exchange tube strengthens the heat exchange, and is finally sent into the room through the hot air outlet, thereby converting the biomass energy into heat energy. The utility model has the advantages of wide fuel adaptability, low smoke and dust emission, good heat exchange effect, automatic start-stop and adjustment, power failure protection, multi-purpose heating and water heating, convenient moving and fixing, and the like.

Description

A biomass pellet heating stove

technical field

The utility model belongs to the technical field of biomass utilization and civil heating, in particular to a biomass particle heating furnace.

Background technique

With the development of "coal-to-gas" and "coal-to-electricity" work, it is gradually discovered that a "one-size-fits-all" approach cannot be adopted for the "coal-to-gas" work. For the vast northern rural areas, "coal-to-electricity" is faced with the problems of limited rural electricity capacity and high usage prices. The initial installation cost of the "coal-to-gas" project is high, and it cannot meet the conditions of decentralized layout in rural areas. At the same time, China's natural gas resources are lacking, and the supply volume is difficult to meet all users. In winter, the phenomenon of "gas shortage" occurs from time to time. However, biomass resources such as wood and straw exist widely in rural areas. In places where the conditions for "coal-to-gas" and "coal-to-electricity" are not available, the "coal-to-biomass" scheme can be considered.

At present, the biomass heating furnaces on the market have poor fuel adaptability (only pine wood and other raw materials with low ash content can be used), large smoke and dust emissions, poor heat exchange effect, flue gas reversal after power failure, unable to heat and boil water at the same time, inconvenient Mobile and fixed disadvantages.

Utility model content

The purpose of the utility model is to provide a biomass pellet heating furnace for the above-mentioned defects and deficiencies in the prior art, which has the advantages of wide fuel adaptability, low smoke and dust emission, good heat exchange effect, automatic start-stop and adjustment , power failure protection, multi-purpose heating and water heating, easy to move and fix, etc.

To achieve the above object, the utility model adopts the following technical solutions:

A biomass pellet heating furnace includes a fuel system, a combustion system, a warm air system, an ash removal system, and a power supply and a control system; wherein, the fuel system includes a feeding screw, a hopper and a feeding port; the combustion system includes a combustion chamber, an ignition system Rods, suction ducts, air chambers, flue gas turning chambers, induced draft fans and exhaust ducts; heating system including blower, clapboard, heat exchange pipe and hot air outlet; ash removal system including ash hopper and ash blocking plate; power supply and The control system includes the controller and the protection power supply;

The fuel system and the combustion system are arranged side by side. The top of the hopper is the feeding port, and the bottom is provided with a feeding screw and an ignition rod. Both the feeding screw and the ignition rod are connected to one end of the fire bed of the combustion chamber, and the other end of the combustion chamber is open. There is an ash hopper for collecting soot; an induced draft fan, an ash blocking plate and a flue gas turning chamber are arranged in sequence below the ash hopper. The pipe is connected to the inlet of the flue gas turning chamber, the outlet of the flue gas turning chamber is connected to the inlet of the induced draft fan, and the outlet of the induced draft fan is connected to the exhaust pipe;

A suction pipe is arranged below the hopper, and the suction pipe is communicated with the air chamber arranged under the fire bed of the combustion chamber, and a smoke exhaust pipe, a blower, a power supply and a control system are also arranged below the hopper; the outlet of the blower is connected to the Hot air outlet; the hot air duct is outside the heat exchange tube, and forms multiple S-shaped processes through the partition;

The controller is used to realize automatic ignition, material feeding, temperature adjustment, ash cleaning, alarm, power failure delay shutdown and automatic switch on and off, and the protection power supply is used to provide power for power failure delay shutdown.

A further improvement of the utility model is that it also includes a moving and fixing device, and the moving and fixing device includes an independent adjustment knob and a universal wheel; the independent adjustment knob and the universal wheel are both arranged at the bottom of the heating furnace, and the universal wheel makes the heating furnace convenient The movable, independent adjustment knob makes the heating stove suitable for uneven ground after positioning.

The further improvement of the utility model is that the warm air system passes through the partition plate, so that the cold air fed by the blower forms multiple return paths under the action of the partition plate, and exchanges heat in countercurrent with the flue gas in the heat exchange pipe, thereby strengthening the heat exchange.

A further improvement of the utility model lies in that the top of the combustion chamber is flat and used for placing the kettle.

A further improvement of the utility model is that the ash removal system further comprises a ash cleaning rod, which removes the ash on the inner wall of the heat exchange tube into the flue gas turning chamber.

Compared with the prior art, the present invention has at least the following beneficial technical effects:

1. The feeding screw of the heating furnace in the present utility model has a forward propelling effect on the burning particles during operation, which is more convenient for the burned ashes to enter the ash hopper, so as to realize automatic ash removal, so that larger particles of ash can be burned, and the fuel The characteristics of wide adaptability;

2. A ash blocking plate is installed under the induced draft fan, and the inertial separation is used to remove most of the smoke and dust, and the smoke and dust emissions are small;

3. A number of partitions are arranged in the heating system, so that the hot air forms multiple return paths, and the hot air and the flue gas in the heat exchange tube are in countercurrent heat exchange to strengthen the heat exchange effect;

4. Set the protection power supply to provide power for the power outage delay shutdown, prevent the flue gas from flowing back into the silo and the room, and ensure the safe use of the furnace;

5. The top of the combustion chamber is flat, which is used to place the kettle and realize multi-purpose heating and water heating;

6. Set the universal wheel and independent adjustment knob to make the heating furnace easy to move and adapt to the uneven ground.

Description of drawings

Fig. 1 is a right side view of the structure of the utility model, Fig. 2 is a front view, and Fig. 3 is a top view.

Description of reference numbers:

1. Independent adjustment knob, 2. Universal wheel, 3. Controller, 4. Power protection, 5. Blower, 6. Smoke exhaust pipe, 7. Air suction pipe, 8. Feeding screw, 9. Ignition rod, 10 , hopper, 11, feeding port, 12, kettle, 13, ash cleaning rod, 14, clapboard, 15, combustion chamber, 16, wind chamber, 17, ash hopper, 18, induced draft fan, 19, heat exchange tube, 20. Flue gas turning chamber, 21, ash blocking plate, 22, hot air outlet.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to Figure 1 and Figure 2, a biomass pellet heating furnace provided by the present utility model includes a fuel system, a combustion system, a warm air system, an ash removal system, a power supply and a control system, and a mobile and fixed device; the fuel system includes a fuel supply system. Material screw 8, hopper 10 and feeding port 11; the combustion system includes combustion chamber 15, ignition rod 9, suction pipe 7, air chamber 16, flue gas turning chamber 20, induced draft fan 18 and exhaust pipe 6; the heating system includes The blower 5, the partition plate 14, the heat exchange tube 19 and the hot air outlet 22; the ash removal system includes the ash cleaning rod 13, the ash hopper 17 and the ash blocking plate 21; the power supply and control system includes the controller 3 and the protection power supply 4; mobile and fixed The device includes an independent adjustment knob 1 and a universal wheel 2 .

Further, one end of the fire bed of the combustion chamber 15 is connected to the feeding screw 8 and the ignition rod 9, and the other end is in an open state, which is convenient for the burned soot to enter the ash hopper 17. The ash enters the ash hopper 17 after combustion.

Further, the top of the combustion chamber 15 is flat for placing the kettle 12 .

Further, the combustion system and the heating system are isolated by the heat exchange tube 19 to ensure indoor cleanliness.

Further, a plurality of partitions 14 are arranged in the warm air system, so that the hot air forms a plurality of return paths, and exchanges heat with the flue gas in the heat exchange tube 19 in a countercurrent flow, thereby enhancing the heat exchange.

Further, the ash blocking plate 21 is arranged below the induced draft fan 18, and uses inertial separation to remove most of the smoke and dust.

Further, the protection power supply 4 provides power for delayed shutdown after power failure, and is placed in the silo and indoors for flue gas reversal to ensure the safe use of the heating furnace.

Further, the universal wheel 2 and the independent adjustment knob 1 are arranged at the bottom of the heating furnace, so that the heating furnace can be moved easily and adapt to the uneven ground.

The working principle of the utility model is:

The biomass particles are added into the hopper 10 through the feeding port 11, and sent to the combustion chamber 15 through the feeding screw 8. When starting, the biomass particles reach the ignition point and burn under the heating effect of the ignition rod 9; the combustion air is inhaled by the suction pipe 7 The fuel is distributed to the fuel by the air chamber 16 arranged under the fire bed; under the action of the induced draft fan 18, the combusted flue gas passes through the heat exchange tube 19, the flue gas turning chamber 20, and the induced draft fan 18 in turn, and is finally discharged by the smoke exhaust pipe 6. out of the furnace; the flue gas containing soot removes most of the soot under the action of the flue gas turning chamber 20 and the ash blocking plate 21; the ash cleaning rod 13 removes the dust on the inner wall of the heat exchange tube 19 into the flue gas turning chamber 20; 17 Collect the ash after the combustion of the particles in the combustion chamber 15; under the action of the blower 5 and the action of the baffle 14, the cold air forms multiple return trips, strengthens heat exchange with the heat exchange tube 19, and is finally sent into the room through the hot air outlet 22 , so as to convert the biomass energy into heat energy; under the control of the controller 3, the heating furnace realizes the functions of automatic ignition, feeding, temperature adjustment, ash cleaning, alarm, power failure delay shutdown, automatic switch on and off, etc.; protection of the power supply 4 Provide power for delayed shutdown after power failure; universal wheel 2 makes the heating furnace easy to move, and independent adjustment knob 1 makes the heating furnace adapt to the uneven ground after positioning.

An example of the present invention has been described in detail above, but the content is only a preferred embodiment of the present invention, and cannot be considered to limit the scope of implementation of the present invention. All changes and improvements made according to the scope of the application of the present utility model should still belong to the scope of the present utility model.

Claims (5)

1. A biomass particle heating furnace is characterized by comprising a fuel system, a combustion system, a warm air system, an ash removal system and a power supply and control system; wherein,

the fuel system comprises a feeding screw (8), a hopper (10) and a charging opening (11); the combustion system comprises a combustion chamber (15), an ignition rod (9), an air suction pipe (7), an air chamber (16), a flue gas steering chamber (20), an induced draft fan (18) and a smoke exhaust pipe (6); the warm air system comprises a blower (5), a partition plate (14), a heat exchange pipe (19) and a hot air outlet (22); the ash removal system comprises an ash bucket (17) and an ash blocking plate (21); the power supply and control system comprises a controller (3) and a protection power supply (4);

the fuel system and the combustion system are arranged in parallel, the top of the hopper (10) is provided with a feed inlet (11), the bottom of the hopper is provided with a feed screw (8) and an ignition rod (9), the feed screw (8) and the ignition rod (9) are both connected to one end of a fire bed of the combustion chamber (15), the other end of the combustion chamber (15) is in an open state, and the hopper is provided with an ash hopper (17) for collecting ash; an induced draft fan (18), an ash blocking plate (21) and a smoke diversion chamber (20) are sequentially arranged below the ash hopper (17), a combustion system and a warm air system are isolated by a heat exchange pipe (19), a smoke outlet of the combustion chamber (15) is communicated to an inlet of the smoke diversion chamber (20) through the heat exchange pipe (19), an outlet of the smoke diversion chamber (20) is communicated to an inlet of the induced draft fan (18), and an outlet of the induced draft fan (18) is communicated to a smoke exhaust pipe (6);

an air suction pipe (7) is arranged below the hopper (10), the air suction pipe (7) is communicated with an air chamber (16) arranged below a combustion chamber (15) fire bed, and a smoke exhaust pipe (6), a blower (5) and a power supply and control system are also arranged below the hopper (10); the outlet of the blower (5) is communicated to the hot air outlet (22) through a hot air channel; the hot air channel is arranged outside the heat exchange tube (19) and forms a plurality of S-shaped flows through the partition plate (14);

the controller (3) is used for realizing automatic ignition, feeding, temperature adjustment, ash removal, alarming, power failure delay shutdown and automatic startup and shutdown, and the protection power supply (4) is used for providing power for power failure delay shutdown.

2. A biomass particle heating stove according to claim 1, further comprising moving and fixing means, the moving and fixing means comprising an independent adjusting knob (1) and universal wheels (2); independent adjust knob (1) and universal wheel (2) all set up in the bottom of heating stove, and universal wheel (2) make the heating stove convenient the removal, and independent adjust knob (1) makes the heating stove after the location, can be applicable to the condition of uneven ground.

3. The biomass particle heating stove according to claim 1, characterized in that the heating system makes the cold air sent by the blower (5) form a plurality of return strokes under the action of the partition plate (14) through the partition plate (14), and the cold air and the flue gas in the heat exchange pipe (19) are in countercurrent heat exchange to strengthen the heat exchange.

4. A biomass pellet heating stove according to claim 1, characterised in that the top of the combustion chamber (15) is flat for holding a kettle (12).

5. The biomass particle heating stove according to claim 1, characterized in that the ash removal system further comprises an ash removal rod (13) for removing ash adhering to the inner wall of the heat exchange pipe (19) into the flue gas diversion chamber (20).

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