Biomass particle furnace

Abstract

The utility model belongs to the technical field of biomass particle furnaces, and discloses a biomass particle furnace which comprises a furnace body, a plurality of supporting columns are arranged in the middle of the upper end of the furnace body in a square array mode, weighing sensors are fixedly installed at the upper ends of the supporting columns, and a feeding device is installed at the position, located in the middle of the supporting columns, of the upper end of the furnace body in a sliding mode. A material receiving net is slidably installed in the middle in the furnace body and penetrates through the inner wall of the furnace body, a driving set for driving the material receiving net to slide is arranged on one side of the outer wall of the furnace body, an air inlet set is arranged in the furnace body and located below the material receiving net, and a smoke exhaust device is arranged on the outer wall of the furnace body and located above the driving set. One end of the smoke exhaust device extends into the furnace body; the biomass particle feeding device is simple in overall structure, biomass particles can be accurately and quantitatively added, the biomass particles added into the furnace body can be evenly spread in the furnace body, sufficient combustion is guaranteed, and the using effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of biomass pellet stove, and specifically relates to a biomass pellet stove. BACKGROUND

[0002] As a kind of efficient, clean renewable energy utilization equipment, biomass pellet stove is widely used in industrial heating, household heating and agricultural drying and other fields.It uses biomass pellet as fuel, with high combustion efficiency, low pollutant emission and wide raw material source.However, in practical application, the stability and accuracy of fuel supply system are still the key technical bottleneck restricting the performance improvement of equipment.

[0003] Traditional biomass pellet stove fuel supply mostly uses screw conveyor or gravity self-flow type feeding device.Screw conveyor drives screw rotation by motor, and pushes pellet fuel into combustion chamber, but such structure is not accurate in controlling supply amount, and at the same time, biomass pellets transported into stove are often stacked, affecting overall combustion of biomass pellets, and toxic smoke is easy to produce due to stacking.

[0004] A Chinese patent with application number CN2022214282200 discloses biomass stove pellet feeding device, which comprises hopper and hearth, and lower discharge port of the hopper is provided with discharging cavity, and lower part of the discharging cavity is provided with discharging chute, and output end of the discharging chute is communicated to inside of the hearth;A plurality of annularly arranged storage chambers are arranged in the discharging cavity;Upper valve plate and lower valve plate are arranged at upper and lower ends of the discharging cavity respectively, the upper valve plate and the lower valve plate are attached to upper and lower ends of the discharging cavity respectively, and the upper valve plate and the lower valve plate rotate horizontally under the driving of driving mechanism;Feeding gap is arranged on the upper valve plate, and fuel enters the storage chamber through the feeding gap;Discharging gap is arranged on the lower valve plate, and fuel separates from the storage chamber through the discharging gap;The feeding gap and the discharging gap are staggered in vertical direction.The utility model has anti-backfire function, which helps to improve safety of biomass stove;

[0005] However, the material entering from the discharging chute is stacked in the stove body in the patent, which leads to insufficient combustion, and biomass pellets cannot be added accurately and quantitatively, which is easy to cause waste. UTILITY MODEL CONTENT

[0006] The main technical problem to be solved by the utility model is to provide a biomass pellet stove with simple overall structure, which can accurately and quantitatively add biomass pellets, biomass pellets added into the stove body can be evenly spread in the stove body, ensure sufficient combustion and improve use effect.

[0007] To solve the above technical problems, the utility model provides the following technical scheme:

[0008] A biomass particle stove comprises a stove body, a plurality of support columns arranged in a square array at a middle position of an upper end of the stove body, a weighing sensor fixedly installed at an upper end of the support columns, a feeding device slidingly installed at a middle position of the upper end of the stove body, a receiving net slidingly installed at a middle position inside the stove body, the receiving net penetrating through an inner wall of the stove body, a driving group arranged on one side of an outer wall of the stove body and used for driving the receiving net to slide, an air inlet group arranged at a position below the receiving net inside the stove body, an exhaust device arranged at a position above the driving group on the outer wall of the stove body and extending to the inside of the stove body at one end.

[0009] The following is a further optimization of the technical solution of the present application:

[0010] The feeding device comprises two symmetrically arranged sliding rods fixedly installed on an upper surface of the stove body, the two sliding rods are located inside the plurality of support columns, and the same mounting plate is slidingly connected to the two sliding rods.

[0011] Further optimization: a material containing hopper is fixedly installed on the mounting plate, and the material containing hopper penetrates through the mounting plate and is fixedly installed at a middle position of the mounting plate.

[0012] Further optimization: the lower surface of the mounting plate can be in contact with the force receiving end of all the weighing sensors when sliding downward, that is, the weighing sensors can measure the weight of the mounting plate and the material containing hopper.

[0013] Further optimization: a plurality of ejection air cylinders are fixedly installed on the upper surface of the stove body below the mounting plate, and the power output ends of the plurality of ejection air cylinders can simultaneously act on the lower surface of the mounting plate.

[0014] Further optimization: a motor is fixedly installed on the upper end surface of the material containing hopper, and a material conveying auger is fixedly connected to the power output end of the motor after penetrating through the upper surface of the material containing hopper.

[0015] Further optimization: a material conveying pipe is connected to the lower end of the material containing hopper, and the inner diameter of the material conveying pipe matches the outer diameter of the material conveying auger.

[0016] Further optimization: the driving group comprises a first L-shaped bracket fixedly connected to one end of the receiving net, the first L-shaped bracket is fixedly connected with a driving air cylinder, the mounting end of the driving air cylinder is fixedly connected with a second L-shaped bracket, and the second L-shaped bracket is fixedly installed at a corresponding position on the outer wall of the stove body.

[0017] Further optimization: the air inlet group comprises a fan fixedly installed on the outer wall of the stove body, an air pipe is connected to the output end of the fan, the air pipe penetrates through one side of the outer wall of the stove body and extends to the inside of the stove body and is then fixedly installed on the other side of the inner wall of the stove body, and a plurality of ventilation holes are uniformly arranged on the outer surface of the air pipe inside the stove body.

[0018] The utility model discloses adopt above-mentioned technical scheme, clever design, reasonable structure can be in the biomass pellet stove quantitative addition biomass pellet, do not waste, convenient feeding, simple operation, and the feeding device is in the biomass pellet conveying into the furnace body, under the action of the drive group, drive the material receiving net left and right movement, even scattering on the material receiving net on the pellet that falls on the material receiving net, improve the combustion efficiency of biomass pellet, avoid too much smoke due to the combustion of insufficient simultaneously, furthermore, set up the air pipe, and the air hole of air pipe can even spread to the furnace body, provide sufficient air for the biomass pellet combustion, further guarantee the combustion efficiency of pellet, and the smoke produced in the combustion is filtered to the surrounding environment, and the pellet stove whole structure is simple, reduces production cost.

[0019] The utility model is further illustrated below in connection with the drawings and examples. DRAWINGS

[0020] Figure 1 It is the cross section of the whole structure in the embodiment of the utility model;

[0021] Figure 2 It is the structure schematic view of the air pipe in the embodiment of the utility model.

[0022] In the drawing: 1, furnace body;11, first furnace door;12, second furnace door;13, support column;14, weighing sensor;15, closing door;2, air inlet group;21, fan;22, air pipe;220, air hole;3, material receiving net;31, drive group;310, first L-shaped support;311, second L-shaped support;312, drive cylinder;4, ignition rod;5, smoke exhaust device;51, first smoke exhaust pipe;52, filter group;520, outer frame;521, filter layer;53, second smoke exhaust pipe;6, feeding device;61, mounting plate;62, sliding rod;63, ejecting cylinder;64, material hopper;65, material conveying pipe;66, material conveying auger;67, motor. DETAILED DESCRIPTION

[0023] As Figures 1-2 Shown: a kind of biomass pellet stove, including furnace body 1, the furnace body 1 upper end middle position square array has multiple support columns 13, weighing sensor 14 is fixedly installed on the upper end of support column 13, feeding device 6 is slidably installed on the upper end of furnace body 1 at the middle position of multiple support columns 13, material receiving net 3 is slidably installed at the middle position inside furnace body 1, material receiving net 3 penetrates furnace body 1 inner wall, and the outer wall of furnace body 1 one side is provided with drive group 31 of the drive material receiving net 3 sliding, air inlet group 2 is arranged at the position below material receiving net 3 in the inside of furnace body 1, and smoke exhaust device 5 is arranged on the outer wall of furnace body 1 at the position above drive group 31, one end of smoke exhaust device 5 extends to the inside of furnace body 1.

[0024] The inside of the furnace body 1 is provided with a combustion chamber above the receiving net 3 and a ventilation chamber below the receiving net 3.

[0025] The outside of the furnace body 1 is hinged with a first furnace door 11 and a second furnace door 12 opposite to the smoke exhaust device 5, the first furnace door 11 is located at the upper end and corresponds to the combustion chamber, and the second furnace door 12 is located at the lower end and corresponds to the ventilation chamber.

[0026] The first furnace door 11 can be used to observe the combustion of biomass particles in the combustion chamber, and the second furnace door 12 can be used to clean the ash produced after combustion.

[0027] The hinged installation mode of the first furnace door 11 and the second furnace door 12 is known in the prior art, which will not be repeated here.

[0028] The receiving net 3 also places a fire stick 4, which can ignite the biomass particles on the receiving net 3.

[0029] The inside top wall of the furnace body 1 is hinged with a closing door 15 corresponding to the position of the feeding device 6, and the discharge end of the feeding device 6 can extend through the closing door 15 to the combustion chamber.

[0030] In this embodiment, the closing door 15 adopts a downwardly opening door installation mode, and the closing door 15 is hinged with the furnace body 1, and a torsional spring is arranged at the hinge to realize that when the feeding device 6 moves upwardly and exits the inside of the furnace body 1, the closing door 15 can be automatically closed to protect the feeding device 6.

[0031] The specific installation mode of the closing door 15 in the prior art is known, which will not be repeated here.

[0032] The inside top wall of the furnace body 1 and the surface of the closing door 15 close to the combustion chamber are both adhered with heat insulation and fireproof materials (glass wool, etc.), which are not marked in the figure, to further protect the feeding device 6.

[0033] The feeding device 6 includes two symmetrical sliding rods 62 fixedly installed on the upper surface of the furnace body 1, and the two sliding rods 62 are located inside the plurality of support columns 13.

[0034] The same mounting plate 61 is connected to the two sliding rods 62 through bearings.

[0035] The mounting plate 61 is fixedly installed with a hopper 64, and the hopper 64 penetrates through the mounting plate 61 and is fixedly installed at the middle position of the mounting plate 61.

[0036] The lower surface of the mounting plate 61 can be in contact with the force receiving end of all the weighing sensors 14 when sliding downwardly, that is, the weighing sensors 14 can measure the weight of the mounting plate 61 and the hopper 64.

[0037] A plurality of ejection cylinders 63 are fixedly installed on the upper surface of the furnace body 1 below the mounting plate 61, the power output ends of the plurality of ejection cylinders 63 can simultaneously act on the lower surface of the mounting plate 61, so as to drive the mounting plate 61 and the material hopper 64 to slide up and down on the sliding rod 62.

[0038] A motor 67 is fixedly installed on the upper end surface of the material hopper 64, and the power output end of the motor 67 is fixedly connected with a material conveying auger 66 after penetrating through the upper surface of the material hopper 64.

[0039] A feeding door is also hingedly connected to the upper end surface of the material hopper 64 near the edge, through which the biomass particles can be poured into the material hopper 64.

[0040] The material hopper 64 is communicated with a material conveying pipe 65, and the inner diameter of the material conveying pipe 65 matches the outer diameter of the material conveying auger 66.

[0041] The material conveying pipe 65 can penetrate through the top wall of the furnace body 1 when sliding up and down, so as to realize conveying biomass particles into the furnace body 1.

[0042] When the ejection cylinders 63 are in the retracted state, i.e. not acting on the mounting plate 61, biomass particles are added into the material hopper 64 through the feeding door, at this time, the mounting plate 61 drives the material hopper 64 to act on the weighing sensor 14, when the weight of the added biomass particles reaches the preset maximum value of the weighing sensor 14, a feedback signal is sent, i.e. the adding of particles is stopped.

[0043] At this time, the material conveying pipe 65 is at the lowermost end, the closure door 15 is opened, and is in the penetrating state with the combustion chamber, so as to facilitate the conveying of particles, and then the motor 67 is started to drive the material conveying auger 66 to rotate, so as to convey the particles in the material hopper 64 into the furnace body 1.

[0044] With the conveying of particles, the weight measured by the weighing sensor 14 is decreasing, when the decreased amount reaches the preset value, a feedback signal is sent, and the motor 67 stops running, the conveying is completed, at this time, the ejection cylinders 63 are started to drive the mounting plate 61 and the material hopper 64 to move upwards until the material conveying pipe 65 exits the combustion chamber, so that the closure door 15 can be automatically closed, i.e. the quantitative feeding is completed, and the biomass particles have no damaging effect on the material conveying pipe 65 during combustion.

[0045] The receiving net 3 is made of stainless steel net, and the mesh size of the receiving net 3 is smaller than the size of the biomass particles, so that the biomass particles can be burned on the receiving net 3, and the ash after combustion can fall through the mesh.

[0046] The driving group 31 comprises a first L-shaped support 310 fixedly connected with one end of the material receiving net 3, and the first L-shaped support 310 is fixedly connected with a driving cylinder 312.

[0047] The extending end of the driving cylinder 312 is fixedly connected with the first L-shaped support 310, and the mounting end of the driving cylinder 312 is fixedly connected with a second L-shaped support 311.

[0048] The second L-shaped support 311 is fixedly mounted on the corresponding position of the outer wall of the furnace body 1.

[0049] In this way, when the power output end of the driving cylinder 312 extends and retracts, the first L-shaped support 310 and the material receiving net 3 move left and right, which can evenly spread the biomass particles on the material receiving net 3 and improve the combustion efficiency of the biomass particles.

[0050] The ignition principle of the ignition rod 4 is known in the prior art and can be obtained on the market.

[0051] The ignition rod 4 is located near the lower position of the material conveying pipe 65, so that the particles output from the material conveying pipe 65 fall on the ignition rod 4, facilitating ignition and combustion.

[0052] The air inlet group 2 comprises a fan 21 fixedly mounted on the outer wall of the furnace body 1, the output end of the fan 21 is communicated with an air pipe 22, the air pipe 22 penetrates through one side of the outer wall of the furnace body 1 and extends to the inner wall of the other side of the furnace body 1.

[0053] As shown in Figure 2 The air pipe 22 is uniformly provided with a plurality of ventilation holes 220 on the outer surface in the furnace body 1.

[0054] In this way, the air output by the fan 21 is scattered to the inside of the furnace body 1 through the ventilation holes 220, providing uniform and sufficient air for the combustion of biomass particles on the material receiving net 3, and through the arrangement of the ventilation holes 220, the air can be soft, avoiding blowing out the flame.

[0055] The falling ash after combustion does not block the ventilation holes 220 under the wind, which is convenient to use.

[0056] The smoke exhaust device 5 comprises a first smoke exhaust pipe 51 communicated with the furnace body 1, the other end of the first smoke exhaust pipe 51 is communicated with a filtering group 52, and the output end of the filtering group 52 is communicated with a second smoke exhaust pipe 53.

[0057] The filtering group 52 comprises an outer frame 520 communicated with the first smoke exhaust pipe 51, and in this embodiment, the outer frame 520 is made of a plurality of stainless steel plates welded together.

[0058] The filter layer 521 is fixedly installed at the middle position inside the outer frame 520, and in the embodiment, the filter layer 521 is made of filter bag material (including polytetrafluoroethylene) which is resistant to high temperature, corrosion and capable of adsorbing contaminated particles, and is available in the market.

[0059] In this way, the flue gas in the furnace body 1 enters the outer frame 520 through the first flue gas discharge pipe 51, is filtered by the filter layer 521, and is discharged to the outdoor through the second flue gas discharge pipe 53, without polluting the environment.

[0060] After use, the second furnace door 12 is opened, and the ash generated by combustion can be cleaned.

[0061] The control system for controlling the operation of the pellet stove is also fixedly installed on one side of the furnace body 1, not marked in the figure, and the control ends of the motor 67, the driving cylinder 312, the ejection cylinder 63, the ignition rod 4 and the fan 21 are electrically connected with the control system.

[0062] The signal output end of the weighing sensor 14 is electrically connected with the control system through wires.

[0063] For those skilled in the art, according to the teaching of the present application, the changes, modifications, replacements and deformations made to the embodiments without departing from the principles and spirits of the present application still fall within the protection scope of the present application.

Claims

1. A biomass pellet stove comprising a stove body (1), characterized in that: A plurality of support columns (13) are arranged in a square array at the middle position of the upper end of the furnace body (1), a load sensor (14) is fixedly installed at the upper end of the support column (13), a feeding device (6) is slidingly installed at the middle position of the upper end of the furnace body (1), a material receiving net (3) is slidingly installed at the middle position inside the furnace body (1), the material receiving net (3) penetrates the inner wall of the furnace body (1), a driving group (31) for driving the material receiving net (3) to slide is arranged on one side of the outer wall of the furnace body (1), an air inlet group (2) is arranged at a position below the material receiving net (3) inside the furnace body (1), an exhaust device (5) is arranged at a position above the driving group (31) on the outer wall of the furnace body (1), and one end of the exhaust device (5) extends into the furnace body (1).

2. A biomass pellet stove according to claim 1, characterized in that: The feeding device (6) comprises two symmetrical sliding rods (62) fixedly installed on the upper surface of the furnace body (1), the two sliding rods (62) are located inside the plurality of support columns (13), and the same mounting plate (61) is slidingly connected to the two sliding rods (62).

3. A biomass pellet stove according to claim 2, wherein: The mounting plate (61) is fixedly installed with a material containing hopper (64), and the material containing hopper (64) penetrates the mounting plate (61) and is fixedly installed at the middle position of the mounting plate (61).

4. A biomass pellet stove according to claim 3, wherein: The lower surface of the mounting plate (61) can be in contact with the force receiving end of all load sensors (14) when sliding downward, that is, the load sensor (14) can measure the weight of the mounting plate (61) and the material containing hopper (64).

5. A biomass pellet stove according to claim 4, wherein: A plurality of ejection air cylinders (63) are fixedly installed on the upper surface of the furnace body (1) at a position below the mounting plate (61), and the power output ends of the plurality of ejection air cylinders (63) can simultaneously act on the lower surface of the mounting plate (61).

6. A biomass pellet stove according to claim 5, wherein: A motor (67) is fixedly installed on the upper end surface of the material containing hopper (64), and the power output end of the motor (67) is fixedly connected with a material conveying auger (66) after penetrating the upper surface of the material containing hopper (64).

7. A biomass pellet stove according to claim 6, characterized in that: The lower end of the material containing hopper (64) is communicated with a material conveying pipe (65), and the inner diameter of the material conveying pipe (65) matches the outer diameter of the material conveying auger (66).

8. A biomass pellet stove according to claim 7, characterized in that: The driving group (31) comprises a first L-shaped bracket (310) fixedly connected with one end of the material receiving net (3), the first L-shaped bracket (310) is fixedly connected with a driving cylinder (312) at the same time, the mounting end of the driving cylinder (312) is fixedly connected with a second L-shaped bracket (311), and the second L-shaped bracket (311) is fixedly installed at the corresponding position on the outer wall of the furnace body (1) at the same time.

9. A biomass pellet stove according to claim 8, characterized in that: The air inlet group (2) comprises a fan (21) fixedly installed on the outer wall of the furnace body (1), the output end of the fan (21) is communicated with an air pipe (22), the air pipe (22) penetrates one side of the outer wall of the furnace body (1) and extends into the furnace body (1) to be fixedly installed on the other side of the inner wall of the furnace body (1), and a plurality of ventilation holes (220) are uniformly formed in the outer surface of the air pipe (22) inside the furnace body (1).

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