A biomass pellet environmentally friendly heating stove

Abstract

The invention discloses a biomass pellet environmentally friendly heating stove, which relates to the technical field of heating equipment, including a stove body, a combustion chamber, a heat exchange chamber and a feeding chamber are arranged in the stove body, the combustion chamber and the feeding chamber are connected through a feeding pipe, a combustion cup is arranged in the combustion chamber, a feeding device is arranged in the feeding chamber, two groups of symmetrically arranged smoke extraction devices are arranged in the stove body, a second fan is arranged in the heat exchange chamber, a first air outlet and a second air outlet are arranged on the stove body, an igniter is arranged in the stove body, and a dust removal mechanism is arranged in the heat exchange smoke pipe. The heating stove of the invention has high thermal efficiency, is easy to use and operate, has strong functionality, and is practical and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of heating equipment, and in particular to an environmentally friendly heating stove with biomass particles. Background Art

[0002] Biomass fuel is a block-shaped environmentally friendly new energy source produced by processing straw, rice straw, rice husk, peanut shell, corn cob, tea shell, cottonseed shell and "three wastes". Its product form is a particle with a diameter between 6 and 10 mm. According to Swedish standards, the calorific value of biomass pellet fuel should generally be above 16.9 megajoules. Compared with traditional fuels, biomass pellet fuel not only has economic advantages but also environmental benefits, and fully meets the requirements of sustainable development. Its advantages are as follows: ① Due to its particle shape, the volume is compressed, which can save storage space, and it is also convenient for transportation, reducing transportation costs; ② High combustion efficiency, easy to burn out, less residual carbon, compared with coal, high volatile content, low ignition point, easy to ignite; increased density, high energy density, greatly increased combustion duration, can be directly used in coal-fired boilers; ③ During combustion, the content of harmful gas components produced is extremely low, and the emission of harmful gases is small, which has environmental benefits; ④ The ash after combustion can also be used directly as potash fertilizer, saving expenses. Based on the development of biomass fuel technology and clean heating, biomass pellet fuel heating stoves came into being. The wind-heating type heating stove transfers the combustion heat energy directly to the indoor air through sophisticated design. Compared with air conditioners and previous coal-fired heating stoves, it has its unique advantages: ① Compared with coal-fired biomass pellet fuel, the shape is regular and can be automatically controlled; ② Compared with coal-fired biomass pellet fuel, the appearance is clean and hygienic, suitable for home use; ③ Compared with air conditioners, biomass pellet heating stoves burn with real fire, and part of the heat is radiated through the glass, which makes the body feel comfortable and the atmosphere good; ④ Compared with air conditioners, the core temperature of the internal heat exchanger of the heating stove is high (up to 200 degrees Celsius), and the heating effect is not affected by the harsh low temperature conditions in winter, and the indoor air supply can also be sterilized at high temperature; ⑤ Compared with air conditioners, the draft fan of the heating stove has a ventilation function, which can continuously replenish fresh air in the room.

[0003] At present, there are many heating stoves based on biomass pellet fuel, but the basic structure of these heating stoves is mostly the same, firstly, the metal cavity is heated by fuel combustion, then the indoor air is passed through the metal cavity by the air supply fan to increase the temperature, and finally the hot air is sent out through the air outlet to achieve the purpose of indoor heating. However, these heating stoves also have the following defects: the thermal efficiency of the heating stove is low, and over a long period of time, the smoke generated by the combustion of biomass pellets adheres to the inner wall of the heat exchange pipe, affecting the heat dissipation of the heat exchange pipe. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides an environmentally friendly heating stove using biomass particles.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0006] A biomass pellet environmentally friendly heating stove comprises a stove body, wherein a combustion chamber, a heat exchange chamber and a feeding chamber are arranged in the stove body, the combustion chamber and the feeding chamber are connected through a feeding pipe, the feeding pipe passes through the heat exchange chamber located in the middle, a combustion cup is arranged in the combustion chamber, a plurality of ash discharge ports are opened at the bottom of the combustion cup, the combustion cup is located below the discharge port of the feeding pipe; an ash chamber is arranged in the stove body, the ash chamber is located below the combustion chamber, and the ash chamber is connected with the combustion chamber;

[0007] A feeding device is provided in the feeding chamber, which includes a feeding auger located at the bottom of the feeding chamber, a slow-feeding impeller mounted in the middle of the feeding chamber and a first driving motor located outside the feeding chamber, the material output end of the feeding auger is connected to the upper input port of the feeding pipe, the power input end of the feeding auger is connected to the power output shaft of the first driving motor, the slow-feeding impeller is located above the feeding auger, the slow-feeding impeller includes a rotating drum, a third rotating shaft arranged at the rotation center of both ends of the rotating drum, a partition arranged in the middle position of the rotating drum, and a plurality of material blocking plates located on both sides of the partition and vertically connected to the partition, and the space between adjacent material blocking plates and the furnace body is a material holding area, and a second driving motor is fixedly installed at the rear of the furnace body, and the power output end of the second driving motor is connected to the third rotating shaft on the corresponding side;

[0008] Two groups of symmetrically arranged smoke extraction devices are provided in the furnace body, and the two groups of smoke extraction devices are respectively located on both sides of the feeding pipe. The smoke extraction devices include a heat exchange smoke pipe and a first fan vertically arranged in the heat exchange chamber. The top end of the heat exchange smoke pipe is connected to the top wall of the heat exchange chamber, and the bottom end of the heat exchange smoke pipe extends to the bottom of the furnace body, and a dust collecting hood is threadedly sleeved on the bottom end of the heat exchange smoke pipe; the upper position of the heat exchange smoke pipe is connected to the combustion chamber through a first branch pipe, and the lower position of the heat exchange smoke pipe is connected to the ash chamber through a second branch pipe, and the lower position of the heat exchange smoke pipe is connected to the output end of the first fan through a third branch pipe, and a first partition net is provided in the second branch pipe, and a second partition net is provided in the third branch pipe;

[0009] A second fan is provided in the heat exchange chamber, the second fan is fixedly arranged on the top of the combustion chamber, a first air outlet is provided at the front of the furnace body, and a second air outlet is provided at the top of the furnace body;

[0010] A concave cavity is provided at the rear of the furnace body, the first fan is fixedly connected in the concave cavity, an igniter is also fixedly connected in the concave cavity, and an ignition output end of the igniter passes through the furnace body and the heat exchange chamber and extends to an ignition port provided at the side of the combustion cup;

[0011] A dust removal mechanism is provided in the heat exchange smoke pipe, which includes a third drive motor, a screw and a moving seat. The screw is vertically arranged at the center of the heat exchange smoke pipe, the moving seat is sleeved on the screw, and a nut is provided in the moving seat for transmission connection with the screw. The power output shaft of the third drive motor passes through the furnace body and is connected to the top of the screw. The moving seat includes an annular scraper provided on the side and connected to the inner wall of the heat exchange smoke pipe in a cooperative manner. The annular scraper is provided with a hollow structure for smoke and dust to slide off.

[0012] In a further embodiment of the present invention, a plurality of heat sink fins are provided on the top of the combustion chamber, the heat transfer ends of the heat sink fins are located above the combustion chamber, and the heat dissipation ends of the heat sink fins are located in the heat exchange chamber.

[0013] In a further embodiment of the present invention, the combustion cup comprises a beveled cup mouth at the top.

[0014] In a further embodiment of the present invention, a first observation window is provided on the furnace body on both sides of the above-mentioned ash chamber, and a first glass cavity is opened on the furnace body outside the first observation window. A transparent, high-temperature resistant first glass partition window that is adapted to the size of the first glass cavity is provided in the first glass cavity. Both sides of the top of the first glass partition window are hinged to the furnace body through a first rotating shaft, a first bolt penetrates through a position near the middle of the bottom edge of the first glass partition window, a first threaded hole that cooperates with the first bolt is opened in the first glass cavity corresponding to the first bolt, and a first sealing rubber ring is provided on the first glass cavity outside the first observation window.

[0015] In a further embodiment of the present invention, a second observation window is provided at the front part of the above-mentioned furnace body, and a second glass cavity is opened on the furnace body outside the second observation window. A second glass partition window which is transparent and resistant to high temperature and matches the size of the second glass cavity is provided in the second glass cavity. The two sides of the top of the second glass partition window are hinged to the furnace body through a second rotating shaft. A second bolt passes through a position near the middle of the bottom edge of the second glass partition window. A second threaded hole which cooperates with the second bolt and is connected to the second bolt is opened in the second glass cavity corresponding to the second bolt, and a second sealing rubber ring is provided on the second glass cavity outside the second observation window.

[0016] In a further embodiment of the present invention, a cleaning mechanism is provided in the above-mentioned furnace body, which includes a transmission shaft, a toggle rod, a transmission gear, a transmission rack and a push rod. The transmission shaft vertically passes through the center of the bottom wall of the combustion cup. The toggle rod is vertically fixed to the transmission shaft and horizontally placed on the bottom wall of the combustion cup. The bottom end of the transmission shaft extends to the top of the ash chamber and is fixed to the rotation center of the transmission gear. The push rod horizontally passes through the ash chamber from the front of the furnace body. The transmission rack is fixed to the inner end of the push rod and is meshed with the transmission gear for transmission connection.

[0017] In a further embodiment of the present invention, a feed inlet is provided on the furnace body at the top of the feeding chamber.

[0018] In a further embodiment of the present invention, two pairs of movable rollers are provided at the bottom corners of the furnace body.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The heating stove of the present invention has high thermal efficiency, is easy to use and operate, has strong functionality, and is practical and reliable. Through the design and improvement of the heating stove structure, the added slow-feed impeller can better improve the material blockage in the feeding chamber and the feeding auger; the added dust removal mechanism can effectively remove the smoke and dust attached to the inner wall of the heat exchange smoke pipe, thereby improving the heat exchange efficiency in the heat exchange chamber; the added cleaning mechanism can better clean the ash generated in the combustion cup, accelerate its flow to the ash chamber below, and prevent the problem of low thermal efficiency due to poor combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a front structural schematic diagram of the present invention;

[0023] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0024] Figure 3 It is a side view structural schematic diagram of the present invention;

[0025] Figure 4 for Figure 3 A partial enlarged view of

[0026] Figure 5 It is a schematic diagram of the top view structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the present invention;

[0028] Figure 7 for Figure 6 A partial enlarged view of

[0029] Figure 8 It is a simplified three-dimensional structure diagram of the slow-feed impeller;

[0030] Fig. 9 for Figure 6 A partial enlarged view of

[0031] Fig.10 for Fig. 9A partial enlarged view of the middle moving seat;

[0032] Fig.11 for Figure 6 A partial enlarged view of

[0033] The markings in the figure are: 1. furnace body; 101. concave cavity; 102. combustion chamber; 103. heat exchange chamber; 104. feeding chamber; 105. ash chamber; 106. first air outlet; 107. second air outlet; 2. feeding pipe; 3. combustion cup; 4. ash discharge port; 5. first observation window; 501. first glass cavity; 502. first glass partition window; 503. first bolt; 504. first threaded hole; 6. second observation window; 601. second glass cavity; 602. second glass partition window; 603. second rotating shaft; 604. second bolt; 7. ash cleaning mechanism; 701. transmission shaft; 702. toggle rod; 703. transmission gear; 704. transmission rack; 705. push rod; 706. handle ;8. Feeding device;801. Feeding auger;802. Slow-feeding impeller;8021. Rotating drum;8022. Partition;8023. Material blocking plate;8024. Second driving motor;8025. Third rotating shaft;803. First driving motor;9. Smoke extraction device;901. Heat exchange smoke pipe;902. First fan;903. Dust hood;904. First branch pipe;905. Second branch pipe;906. Third branch pipe;907. First partition net;908. Second partition net;10. Second fan;11. Ignitor;12. Dust removal mechanism;1201. Third driving motor;1202. Screw rod;1203. Moving seat;1204. Annular scraper;13. Heat dissipation fins;14. Feed inlet;15. Moving roller. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a circuit connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] A biomass pellet environmentally friendly heating stove, reference Figure 1-Figure 6 As shown, it generally includes the following structure:

[0038] It comprises an external furnace body 1, a concave cavity 101 is provided at the rear of the furnace body 1, a combustion chamber 102, a heat exchange chamber 103 and a feeding chamber 104 are provided in sequence from front to back in the furnace body 1, wherein the combustion chamber 102 is connected with the feeding chamber 104 through an inclined feeding pipe 2, and the feeding pipe 2 passes through the heat exchange chamber 103 located in the middle, a combustion cup 3 is provided in the combustion chamber 102, the combustion cup 3 comprises an inclined cup mouth provided at the top, the existence of the inclined cup mouth can facilitate the accumulation of particulate materials in the combustion cup 3, and then combustion, and a plurality of ash discharge ports 4 are provided at the bottom of the combustion cup 3; the combustion cup 3 is located below the discharge port of the feeding pipe 2, and is abutted against the inner side wall of the combustion chamber 102, and the combustion cup 3 is fixedly connected to the bottom wall of the combustion chamber 102 by screws or bolts;

[0039] The furnace body 1 is provided with an ash chamber 105, which is located below the combustion chamber 102, and the ash chamber 105 is connected with the combustion chamber 102 through an ash discharge channel. Specifically, the ash discharge channel is located directly below the combustion cup 3. Figure 4As shown, first observation windows 5 are provided on the furnace body 1 on both sides of the ash chamber 105, and a first glass cavity 501 is opened on the furnace body 1 outside the first observation window 5. A transparent, high-temperature resistant first glass partition window 502 matching the size of the first glass cavity 501 is provided in the first glass cavity 501. Both sides of the top of the first glass partition window 502 are hinged to the furnace body 1 through a first rotating shaft (not shown). A first bolt 503 penetrates near the middle of the bottom edge of the first glass partition window 502. A first threaded hole 504 is provided in the middle to be connected with the first bolt 503, and a first sealing rubber ring (not shown) is provided on the first glass cavity 501 outside the first observation window 5. When the first glass partition window 502 is closed, the first bolt 503 can be screwed into the first threaded hole 504 by rotating the first bolt 503. The first sealing rubber ring is clamped between the first glass partition window 502 and the furnace body 1, and is deformed with the rotation degree of the first bolt 503, thereby achieving the effect of sealing and isolating from smoke. The first glass partition window 502 also makes it easy for the user to observe the accumulation of ash.

[0040] Based on the above, in order to facilitate the user to observe the combustion situation in the combustion chamber 102 from the outside, a second observation window 6 is provided at the front of the furnace body 1. Figure 7 As shown, a second glass cavity 601 is provided on the furnace body 1 outside the second observation window 6, and a second glass partition window 602 which is transparent and resistant to high temperature and matches the size of the second glass cavity 601 is provided in the second glass cavity 601. Both sides of the top of the second glass partition window 602 are hinged on the furnace body 1 through a second rotating shaft 603, and a second bolt 604 penetrates through a position near the middle of the bottom edge of the second glass partition window 602. A second threaded hole (not shown) matched with the second bolt 604 is provided in the second glass cavity 601 corresponding to the second bolt 604, and a second sealing rubber ring (not shown) is provided on the second glass cavity 601 outside the second observation window 6. When the second glass partition window 602 is closed, the second bolt 604 can be screwed into the second threaded hole by rotating it, and the second sealing rubber ring is clamped between the second glass partition window 602 and the furnace body 1, and deforms with the rotation degree of the second bolt 604, thereby achieving a sealing and smoke-isolating effect.

[0041] Based on the above, in order to facilitate the cleaning of the ash generated after the combustion of the material in the combustion cup 3 and accelerate its flow to the ash chamber 105 below, a cleaning mechanism 7 is provided in the furnace body 1. Fig.11As shown, it includes a transmission shaft 701, a toggle rod 702, a transmission gear 703, a transmission rack 704 and a push rod 705. The transmission shaft 701 vertically penetrates the center of the bottom wall of the combustion cup 3. The toggle rod 702 is vertically fixed to the transmission shaft 701 and horizontally placed on the bottom wall of the combustion cup 3. The bottom end of the transmission shaft 701 extends to the top of the ash chamber 105 and is fixed to the rotation center of the transmission gear 703. The push rod 705 horizontally penetrates from the front of the furnace body 1 to the ash chamber In chamber 105, a transmission rack 704 is fixedly connected to the inner end of a push rod 705, and is meshed with a transmission gear 703 for transmission connection. In addition, a handle 706 is provided at the outer end of the push rod 705. The user pushes and pulls the push rod 705 through the handle 706, thereby achieving the purpose of rotating the toggle rod 702 to clean the ashes at the bottom of the combustion cup 3. The toggle rod 702 provided on the bottom wall of the combustion cup 3 can also play the role of toggling the granular material, so that the granular material is evenly distributed for easy combustion.

[0042] A feeding device 8 is provided in the above-mentioned feeding chamber 104, and the feeding device 8 includes a feeding auger 801 located at the bottom of the feeding chamber 104, a slow-feeding impeller 802 mounted in the middle of the feeding chamber 104, and a first driving motor 803 located outside the feeding chamber 104, wherein the material output end of the above-mentioned feeding auger 801 is connected to the upper end input port of the feeding pipe 2, and the power input end of the feeding auger 801 is connected to the power output shaft of the first driving motor 803. The purpose of the first driving motor 803 is to provide power for the feeding auger 801, thereby realizing the transportation of materials. The first driving motor 803 is fixedly connected to the rear wall of the furnace body 1 by screws or bolts, and the slow-feeding impeller 802 is located above the feeding auger 801. Figure 8 As shown, the slow-feed impeller 802 includes a rotating drum 8021, a third rotating shaft 8025 arranged at the rotation center of both ends of the rotating drum 8021, a partition 8022 arranged in the middle position of the rotating drum 8021, and a plurality of material blocking plates 8023 located on both sides of the partition 8022 and vertically connected to the partition 8022, and the space between adjacent material blocking plates 8023 and the furnace body 1 is a material holding area, and a second driving motor 8024 is fixedly installed at the rear of the furnace body 1, and the power output end of the second driving motor 8024 is connected to the third rotating shaft 8025 on the corresponding side, thereby driving the slow-feed impeller 802 to rotate, so as to realize the slow, continuous and orderly transportation of materials to the feeding auger 801 below.

[0043] Combination Figure 9-10As shown, two groups of symmetrically arranged smoke extraction devices 9 are provided in the furnace body 1, and the two groups of smoke extraction devices 9 are respectively located on both sides of the feeding pipe 2. The smoke extraction device 9 includes a heat exchange smoke pipe 901 and a first fan 902 vertically arranged in the heat exchange chamber 103. The top of the heat exchange smoke pipe 901 is connected to the top wall of the heat exchange chamber 103, and the bottom of the heat exchange smoke pipe 901 extends to the bottom of the furnace body 1, and a dust collecting hood 903 is threadedly sleeved at the bottom of the heat exchange smoke pipe 901; the upper position of the heat exchange smoke pipe 901 is connected to the combustion chamber 102 through the first branch pipe 904, and the heat exchange The lower part of the smoke pipe 901 is connected to the ash chamber 105 through the second branch pipe 905, and the lower part of the heat exchange smoke pipe 901 is connected to the output end of the first fan 902 through the third branch pipe 906, and a first partition net 907 is provided in the second branch pipe 905, and a second partition net 908 is provided in the third branch pipe 906. The first partition net 907 and the second partition net 908 are both used to isolate smoke and dust. The smoke and dust isolated by the second partition net 908 falls into the dust collecting hood 903, and the smoke and dust isolated by the first partition net 907 falls into the ash chamber 105;

[0044] A second fan 10 is provided in the above-mentioned heat exchange chamber 103, and the second fan 10 is fixedly installed on the top of the combustion chamber 102, and a first air outlet 106 is opened at the front of the furnace body 1, and the first air outlet 106 is located above the second observation window 6; a second air outlet 107 is opened at the top of the furnace body 1, and the second air outlet 107 is close to the front of the furnace body 1.

[0045] In addition, the first fan 902 is fixedly installed in the concave cavity 101, and an igniter 11 is also fixedly installed in the concave cavity 101. The ignition output end of the igniter 11 passes through the furnace body 1 and the heat exchange chamber 103 and extends to the ignition port (not shown) provided on the side of the combustion cup 3. When in use, the granular fuel in the combustion cup 3 is ignited and burned by the igniter 11 at the ignition port.

[0046] Based on the above, in order to facilitate the removal of smoke and dust in the inner wall of the heat exchange smoke pipe 901, a dust removal mechanism 12 is provided in the heat exchange smoke pipe 901, and the dust removal mechanism 12 includes a third drive motor 1201, a screw rod 1202 and a movable seat 1203, wherein the screw rod 1202 is vertically arranged at the center of the heat exchange smoke pipe 901, the movable seat 1203 is sleeved on the screw rod 1202, and a nut (not shown) that is matched with the screw rod 1202 for transmission connection is provided in the movable seat 1203, and the power output shaft of the third drive motor 1201 passes through the furnace body 1 and the screw rod 1202. The top of the rod 1202 is connected, and the movable seat 1203 includes an annular scraper 1204 provided on the side and connected with the inner wall of the heat exchange smoke pipe 901. The annular scraper 1204 is provided with a hollow structure (not shown) for smoke and dust to slide off. In the above, the third drive motor 1201 is started, driving the screw 1202 to rotate, so that the movable seat 1203 can move up and down, so that the annular scraper 1204 can scrape the smoke and dust on the inner wall of the heat exchange smoke pipe 901, and the scraped dust will automatically fall into the dust collecting hood 903 for collection.

[0047] Based on the above, in order to increase the air temperature in the heat exchange chamber 103, a plurality of heat dissipation fins 13 are provided on the top of the combustion chamber 102, the heat transfer end of the heat dissipation fin 13 is located above the combustion chamber 102, and the heat dissipation end of the heat dissipation fin 13 is located in the heat exchange chamber 103.

[0048] Based on the above, in order to facilitate the feeding of materials into the feeding chamber 104 , a feeding port 14 is provided on the furnace body 1 at the top of the feeding chamber 104 .

[0049] Based on the above, in order to facilitate the movement of the heating stove, two pairs of moving rollers 15 are added at the bottom corners of the stove body 1.

[0050] The working principle of the biomass pellet environmentally friendly heating stove of the present invention is as follows:

[0051] Referring to the diagram and the arrows indicated, the biomass pellet material enters the feeding chamber 104 through the feed port 14, and enters the feeding auger 801 through the slow-feed impeller 802. The first drive motor 803 is activated to transport the pellet material through the feeding pipe 2 to the combustion cup 3. The igniter 11 heats the pellet material to ignite an open flame. The first fan 902 is started to form a negative pressure in the combustion chamber 102, and the smoke generated by the combustion is discharged through the heat exchange smoke pipe 901. At the same time, the second fan 10 is started to discharge the heat in the heat exchange chamber 103 through the first air outlet 106 and the second air outlet 107 for heating.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A biomass pellet environmentally friendly heating stove, comprising a stove body, characterized in that: A combustion chamber, a heat exchange chamber and a feeding chamber are provided in the furnace body. The combustion chamber and the feeding chamber are connected through a feeding pipe. The feeding pipe passes through the heat exchange chamber located in the middle. A combustion cup is provided in the combustion chamber. A plurality of ash discharge ports are provided at the bottom of the combustion cup. The combustion cup is located below the discharge port of the feeding pipe. An ash chamber is provided in the furnace body. The ash chamber is located below the combustion chamber and is connected to the combustion chamber. A feeding device is provided in the feeding chamber, which includes a feeding auger located at the bottom of the feeding chamber, a slow-feeding impeller mounted in the middle of the feeding chamber and a first driving motor located outside the feeding chamber, the material output end of the feeding auger is connected to the upper input port of the feeding pipe, the power input end of the feeding auger is connected to the power output shaft of the first driving motor, the slow-feeding impeller is located above the feeding auger, the slow-feeding impeller includes a rotating drum, a third rotating shaft arranged at the rotation center of both ends of the rotating drum, a partition arranged in the middle position of the rotating drum, and a plurality of material blocking plates located on both sides of the partition and vertically connected to the partition, and the space between adjacent material blocking plates and the furnace body is a material holding area, and a second driving motor is fixedly installed at the rear of the furnace body, and the power output end of the second driving motor is connected to the third rotating shaft on the corresponding side; Two groups of symmetrically arranged smoke extraction devices are provided in the furnace body, and the two groups of smoke extraction devices are respectively located on both sides of the feeding pipe. The smoke extraction devices include a heat exchange smoke pipe and a first fan vertically arranged in the heat exchange chamber. The top end of the heat exchange smoke pipe is connected to the top wall of the heat exchange chamber, and the bottom end of the heat exchange smoke pipe extends to the bottom of the furnace body, and a dust collecting hood is threadedly sleeved on the bottom end of the heat exchange smoke pipe; the upper position of the heat exchange smoke pipe is connected to the combustion chamber through a first branch pipe, and the lower position of the heat exchange smoke pipe is connected to the ash chamber through a second branch pipe, and the lower position of the heat exchange smoke pipe is connected to the output end of the first fan through a third branch pipe, and a first partition net is provided in the second branch pipe, and a second partition net is provided in the third branch pipe; A second fan is provided in the heat exchange chamber, the second fan is fixedly arranged on the top of the combustion chamber, a first air outlet is provided at the front of the furnace body, and a second air outlet is provided at the top of the furnace body; A concave cavity is provided at the rear of the furnace body, the first fan is fixedly connected in the concave cavity, an igniter is also fixedly connected in the concave cavity, and an ignition output end of the igniter passes through the furnace body and the heat exchange chamber and extends to an ignition port provided at the side of the combustion cup; A dust removal mechanism is provided in the heat exchange smoke pipe, which includes a third drive motor, a screw rod and a moving seat. The screw rod is vertically arranged at the center of the heat exchange smoke pipe, the moving seat is sleeved on the screw rod, and a nut is provided in the moving seat that is in driving connection with the screw rod. The power output shaft of the third drive motor passes through the furnace body and is connected to the top of the screw rod. The moving seat includes an annular scraper provided on the side that is in contact with the inner wall of the heat exchange smoke pipe, and a hollow structure for smoke and dust to slide off is provided on the annular scraper. A plurality of heat dissipation fins are arranged on the top of the combustion chamber, the heat transfer ends of the heat dissipation fins are located above the combustion chamber, and the heat dissipation ends of the heat dissipation fins are located in the heat exchange chamber; The combustion cup comprises a beveled cup opening on the top.

2. The biomass pellet environmentally friendly heating stove according to claim 1 is characterized in that: A first observation window is provided on the furnace body on both sides of the ash chamber, a first glass cavity is opened on the furnace body outside the first observation window, a transparent, high-temperature resistant first glass partition window which is adapted to the size of the first glass cavity is provided in the first glass cavity, both sides of the top of the first glass partition window are hinged on the furnace body through a first rotating shaft, a first bolt penetrates near the middle of the bottom edge of the first glass partition window, a first threaded hole which is matched with the first bolt and connected with the first bolt is opened in the first glass cavity corresponding to the first bolt, and a first sealing rubber ring is provided on the first glass cavity outside the first observation window.

3. The biomass pellet environmentally friendly heating stove according to claim 1 is characterized in that: A second observation window is provided at the front of the furnace body, a second glass cavity is opened on the furnace body outside the second observation window, a second glass partition window which is transparent and resistant to high temperature and matches the size of the second glass cavity is provided in the second glass cavity, both sides of the top of the second glass partition window are hinged to the furnace body through a second rotating shaft, a second bolt passes through a position near the middle of the bottom edge of the second glass partition window, a second threaded hole which is matched with the second bolt and is connected to the second bolt is opened in the second glass cavity corresponding to the second bolt, and a second sealing rubber ring is provided on the second glass cavity outside the second observation window.

4. The biomass pellet environmentally friendly heating stove according to claim 1, characterized in that: A cleaning mechanism is provided in the furnace body, which includes a transmission shaft, a toggle rod, a transmission gear, a transmission rack and a push rod. The transmission shaft vertically passes through the center of the bottom wall of the combustion cup. The toggle rod is vertically fixed to the transmission shaft and horizontally placed on the bottom wall of the combustion cup. The bottom end of the transmission shaft extends to the top of the ash chamber and is fixed to the rotation center of the transmission gear. The push rod horizontally passes through the ash chamber from the front of the furnace body. The transmission rack is fixed to the inner end of the push rod and is meshed with the transmission gear for transmission connection.

5. The biomass pellet environmentally friendly heating stove according to claim 1, characterized in that: A feeding port is arranged on the furnace body at the top of the feeding chamber.

6. The biomass pellet environmentally friendly heating stove according to claim 1, characterized in that: Two pairs of moving rollers are arranged at the bottom corners of the furnace body.

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