Solid particle heating stove

Abstract

The utility model relates to a heating furnace, in particular to a solid particle heating furnace, which comprises a combustion chamber, a first auger communicated with the combustion chamber and a first motor for driving the first auger, and is different from the prior art, the solid particle heating furnace further comprises a second auger and a second motor for driving the second auger, the second auger is located above the first auger and communicated with the first auger through the sealed box body, and the feeding hopper is arranged on the second auger. Compared with the prior art, due to the fact that the second packing auger is located above the first packing auger and communicated with the first packing auger through the sealed box body, solid particles falling from the second packing auger are conveyed to the combustion chamber to be combusted by the first packing auger, the solid particles on the first packing auger and the solid particles on the second packing auger are physically isolated, and therefore reverse spreading of fire is eradicated.

Description

Technical Field

[0001] The utility model relates to a heating stove, in particular to a solid particle heating stove. Background Art

[0002] A solid pellet heating stove is a heating device that uses solid biomass pellets as fuel. These biomass pellets are usually made from wood, crop residues, or other organic matter that has been compressed and dried. They are characterized by small size, high density, and high combustion efficiency.

[0003] Existing solid pellet heating furnaces typically feature a continuous feed mechanism to enable unattended operation. This mechanism typically includes an auger, which transports solid pellet fuel from a hopper to the combustion chamber. However, this design has significant drawbacks: fire can easily spread from the furnace along the pellet feed path, igniting the pellets in the hopper and posing a safety hazard. Once the flames spread, not only will the pellets be wasted, but they can also cause a fire, threatening personnel safety.

[0004] Furthermore, due to lax quality control by pellet manufacturers or other factors, pellets may contain contaminants such as plastics and synthetic fiber fabrics. These impurities easily coke and form slag after combustion, which blocks the combustion chamber's ventilation holes and severely hinders the pellets' complete combustion. This incomplete combustion not only wastes fuel but also has adverse environmental impacts. Utility Model Content

[0005] In order to overcome the technical defects or one of the defects of the current solid particle heating stove, the utility model discloses an improved solid particle heating stove, which first solves the problem of preventing the reverse spread of fire, and secondly solves the problem of slag blocking the ventilation holes, thereby improving the combustion efficiency and ensuring the safe, efficient and stable operation of the heating stove.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0007] A solid particle heating stove includes a combustion chamber, a first auger connected to the combustion chamber, and a first motor driving the first auger. Unlike the prior art, it also includes a second auger and a second motor driving the second auger. The second auger is located above the first auger and is connected to the first auger through a sealed box. A feed hopper is provided on the second auger.

[0008] Furthermore, the transmission rate of the second auger is greater than the transmission rate of the first auger, so that the solid particles in the box are not accumulated, thereby preventing the fire from spreading in the opposite direction.

[0009] A solid particle heating furnace includes a combustion chamber, a first auger connected to the combustion chamber, and a first motor that drives the first auger. Different from the existing technology, a slag drop port is provided at the bottom of the combustion chamber, and a slag discharge plate is provided below the slag drop port. A cylindrical cam is installed between the first motor and the shaft of the first auger. The cylindrical cam has a rotating curve drive part, and the rotating curve drive part is slidably matched with a guide column provided at the tail of the slag discharge plate. When the cylindrical cam rotates, it drives the slag discharge plate to perform reciprocating push-pull motion.

[0010] Furthermore, it also includes a reset spring, one end of which is connected to the slag discharge plate and the other end is connected to the machine body; when the slag discharge plate is pushed to the top point by the rotating curve driving part of the cylindrical cam, the slag discharge plate closes the slag drop outlet, and the reset spring is stretched and stored. When the guide column begins to escape from the top point of the rotating curve driving part of the cylindrical cam, the reset spring resets and drives the slag discharge plate to reset, and the slag drop outlet opens.

[0011] Furthermore, a spiral groove is provided on the rotating curve driving portion of the cylindrical cam, and the guide column at the tail of the slag discharge plate is arranged in the groove to form a sliding fit, and the slag discharge plate is driven to perform reciprocating motion as the high point and the low point of the curve rotate and switch.

[0012] Furthermore, a bearing is provided on the guide column.

[0013] Furthermore, a plurality of ventilation holes are provided on the slag discharge plate.

[0014] Furthermore, a guide groove is provided at one end of the slag discharge plate close to the guide column, a guide rod is fixed on the machine body, and the guide rod is slidably engaged with the guide groove.

[0015] Furthermore, it also includes an electric heating rod, and the heating end of the electric heating rod extends into the combustion chamber.

[0016] Furthermore, it also includes a blower, and the air outlet of the blower opens into the ash hopper below the combustion chamber.

[0017] Compared to the prior art, the present invention offers the following beneficial technical effects: Because the second auger is located above the first auger and communicates with it through a sealed housing, solid particles falling from the second auger are transported to the combustion chamber by the first auger for combustion. The solid particles on the first and second auger are physically separated, thereby preventing the reverse spread of fire. The sealed housing prevents the ingress of outside air, creating a relatively oxygen-free environment within the housing. Since flames require oxygen to sustain, this oxygen-free environment effectively suppresses the spread of flames. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 yes Figure 1 sectional view of .

[0020] Figure 3 yes Figure 1 Top view of .

[0021] Figure 4 It is a structural diagram of another cylindrical cam. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] Example 1, as Figure 1-3 A solid particle heating stove shown includes a combustion chamber 1, a first auger 2 communicated with the combustion chamber 1, a first motor 6 driving the first auger 2, a second auger 20 and a second motor 21 driving the second auger 20, the second auger 20 is located above the first auger 2 and communicated with the first auger 2 through a sealed box 22, and a feed hopper 5 is arranged on the second auger 20.

[0026] The second auger 20 is located above the first auger 2, and the two are connected by a sealed box 22. This arrangement creates a physical barrier, preventing the flame from directly contacting the solid particles in the feed hopper 5 from the combustion chamber 1. The sealed box 22 prevents the ingress of external air, creating a relatively oxygen-free environment within the box. Since flames require oxygen to sustain, this oxygen-free environment effectively suppresses the spread of flames.

[0027] In this embodiment, an electric heating rod 12 is also included, the heating end of which extends into the combustion chamber 1. This provides initial heat when starting the combustion process, helping to ignite the solid particulate fuel. This is very helpful in improving ignition efficiency and reducing startup time.

[0028] In this embodiment, a blower 4 is also included, and the air outlet of the blower 4 opens into the ash hopper 13 below the combustion chamber 1. Sufficient air can be provided to the combustion chamber to promote the combustion of the fuel. A sufficient oxygen supply is key to achieving complete combustion. By adjusting the air volume of the blower 4, the intensity and speed of the combustion can be controlled, thereby accurately controlling the output heat of the heating furnace. By optimizing the combustion conditions in the combustion chamber, the blower 4 helps to improve the thermal efficiency of the entire heating furnace, allowing the fuel to be more fully converted into heat energy.

[0029] In another preferred embodiment, the transfer rate of the second auger 20 is greater than that of the first auger 2, preventing the accumulation of solid particles within the housing 22 and the spread of fire in the opposite direction. The transfer rate of the second auger 20 is designed to be greater than that of the first auger 2. This means that the second auger 20 can more quickly transport solid particles from the feed hopper 5 to the bottom of the housing 22, where they are then fed by the first auger 2 into the combustion chamber 1 for combustion. Due to the faster transfer rate of the second auger 20, solid particles within the housing 22 do not accumulate at the bottom. Once particles fall, they are quickly transported away by the first auger 2, minimizing the time they remain within the housing 22 and reducing the risk of fire caused by particle accumulation. This design physically reduces the chance of flames coming into contact with the solid particles within the feed hopper 5, thereby improving the safety of the entire heating furnace system. By controlling the transfer rates of the two augers, fuel can be supplied to the combustion chamber more evenly and stably, resulting in more complete combustion and improved combustion efficiency.

[0030] Example 2, as Figure 1-3The solid particle heating furnace shown includes a combustion chamber 1, a first auger 2 communicating with the combustion chamber 1, and a first motor 6 driving the first auger 2. A slag outlet 15 is provided at the bottom of the combustion chamber 1, and a slag discharge plate 9 is provided below the slag outlet 15. A cylindrical cam 7 is installed between the first motor 6 and the auger shaft 3 of the first auger 2. The cylindrical cam 7 has a rotating curved driving portion 8 that slidably engages with a guide post 10 located at the rear of the slag discharge plate 9. When the cylindrical cam 7 rotates, it drives the slag discharge plate 9 to perform a reciprocating push-pull motion. A reset spring 14 is also included, one end of which is connected to the slag discharge plate 9 and the other end is connected to the body. When the slag discharge plate 9 is pushed to the apex by the rotating curved driving portion 8 of the cylindrical cam 7, the slag discharge plate 9 closes the slag outlet 15, and the reset spring 14 is stretched to accumulate force. When the guide post 10 begins to move away from the apex of the rotating curved driving portion 8 of the cylindrical cam 7, the reset spring 14 resets, driving the slag discharge plate 9 back to its original position, and the slag outlet 15 opens. An effective slag removal mechanism can prevent the slag produced after combustion from accumulating and blocking the ventilation holes of the combustion chamber. The unobstructed flow of ventilation holes is essential for maintaining a stable and efficient combustion process because they ensure sufficient oxygen supply to support combustion. When the ventilation holes are not blocked by slag, there is an adequate supply of oxygen in the combustion chamber, which promotes more complete combustion. This not only improves the utilization rate of fuel, but also reduces harmful emissions caused by incomplete combustion. By using mechanisms such as cylindrical cams and reset springs, the slag removal process can be automatically controlled, improving the response speed and reliability of the system. Through its unique slag removal design, this embodiment not only solves the problem of slag blocking the ventilation holes, but also improves the combustion efficiency, ensures the safe, efficient and stable operation of the heating furnace, and also brings additional environmental and economic benefits.

[0031] In this embodiment, the guide column 10 is provided with a bearing 18. The provision of the bearing 18 significantly reduces friction between the guide column 10 and the slag discharge plate 9, thereby improving the smoothness and flexibility of movement. This helps extend the service life of the equipment and reduces wear. The use of the bearing 18 allows the guide column 10 to slide more accurately within the spiral groove 17, ensuring more stable and precise reciprocating motion of the slag discharge plate 9. Due to the reduced friction, the overall system energy consumption is also reduced, improving the energy efficiency of the equipment.

[0032] In another preferred embodiment, the slag discharge plate 9 is provided with a plurality of ventilation holes 16. The ventilation holes 16 allow air to circulate between the combustion chamber 1 and the slag outlet 15, which helps to maintain an aerobic environment in the combustion chamber and promote the combustion process. This design helps to provide sufficient oxygen to support combustion while helping to discharge the exhaust gas produced by combustion. The ventilation holes 16 can prevent slag from accumulating on the slag discharge plate 9 because they allow smaller particles or ash to fall through the holes and directly enter the ash hopper 13 instead of accumulating on the slag discharge plate 9. When the slag discharge plate 9 is opened, the ventilation holes 16 help to guide the remaining slag to the slag outlet 15, thereby more efficiently discharging the slag from the combustion chamber 1. The design of the ventilation holes 16 can reduce the risk of the slag outlet 15 being blocked by slag or other debris, ensuring a smooth slag discharge process.

[0033] In another preferred embodiment, Figure 4 As shown, the rotating curve driving portion 8 of the cylindrical cam 7 is provided with a spiral groove 17. The guide post 10 at the tail end of the slag discharge plate 9 is set in the groove 17 to form a sliding fit. As the high and low points of the curve rotate and switch, the slag discharge plate 9 is driven to reciprocate. The design of the spiral groove 17 makes the entire slag discharge mechanism more compact, saving space and making the entire heating furnace design more efficient and compact.

[0034] In another preferred embodiment, a guide groove 11 is provided at one end of the slag discharge plate 9 near the guide column 10, and a guide rod 23 is fixed to the body, and the guide rod 23 slides in cooperation with the guide groove 11. The sliding cooperation between the guide groove 11 and the guide rod 23 can ensure that the slag discharge plate 9 moves precisely along the predetermined path during the reciprocating motion, which helps to improve the accuracy and reliability of the slag discharge process. By using the bearing 18 on the guide column 10 and providing the guide groove 11 on the slag discharge plate 9, the friction and wear during the movement can be significantly reduced, thereby extending the service life of the slag discharge plate and the guide column. The guide rod 23 provides a stable guiding effect, ensuring that the slag discharge plate 9 will not deviate or get stuck during the movement, which helps to improve the stability and durability of the entire slag discharge mechanism. This design is a beneficial supplement and improvement to the slag discharge mechanism of the solid particle heating furnace.

[0035] Example 3 is a combination of the technical solutions of Example 1 and Example 2. Please refer to Examples 1 and 2 and will not be repeated here.

[0036] The working process of this embodiment can be summarized into the following steps:

[0037] 1. Startup and feeding: The drive motor 6 is started, and solid particles fall into the auger 2 from the feed port 5. Driven by the motor 6, the auger 2 transports the solid particle fuel into the combustion chamber 1.

[0038] 2. Ignition and combustion: The ignition rod 12 is energized and heated, igniting the solid particles entering the combustion chamber 1. The blower 4 starts working, providing sufficient oxygen to the combustion chamber 1 to accelerate the combustion process of the solid particles.

[0039] 3. Synchronous Operation of the Slag Discharge Mechanism: As the drive motor 6 rotates, the cylindrical cam 7 on the same axis rotates synchronously. The rotating curved drive portion 8 of the cylindrical cam 7 slides with the guide post 10 at the end of the slag discharge plate 9, driving the slag discharge plate 9 in reciprocating motion.

[0040] 4. Slag Discharge Process: When the slag discharge plate 9, guided by the guide groove 11, moves to the slag outlet 15, the outlet 15 is closed. The auger 2 continuously supplies solid particles into the combustion chamber 1, pushing the resulting slag and ash onto the slag discharge plate 9. The slag discharge plate 9 forms a two-stage step below the slag outlet 15. When the slag discharge plate 9 returns to the downward point of the curved drive portion 8 of the cylindrical cam 7, it leaves the slag outlet 15, automatically opening the slag outlet. Blocked by the two-stage step, the slag and ash automatically fall into the ash hopper 13.

[0041] 5. Slag plate reset and circulation: The slag plate 9 resets, closes the slag outlet 15 again, and waits for the next slag ash to arrive. This process is repeated, achieving automatic slag ash cleaning without stopping the combustion.

[0042] 6. Advantages of automatic control: The structure of this utility model is simple and easy to realize automatic control. Whether it is a solid particle heating furnace with a single auger or a double auger, this utility model can be easily applied to realize automatic slag discharge.

[0043] Through the above working process, the utility model effectively solves the slag treatment problem of the solid particle heating furnace during operation, improves the combustion efficiency, ensures the stable operation of the equipment, and reduces the need for manual maintenance.

[0044] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

[0045] Any matters not described in detail in the present invention are prior art or common knowledge in the field.

Claims

1. A solid particle heating stove, comprising a combustion chamber (1), a first auger (2) communicating with the combustion chamber (1), and a first motor (6) driving the first auger (2), characterized in that: It also includes a second auger (20) and a second motor (21) for driving the second auger (20). The second auger (20) is located above the first auger (2) and communicates with the first auger through a sealed box (22). The feed hopper (5) is arranged on the second auger (20).

2. A solid particle heating stove according to claim 1, characterized in that: The transmission rate of the second auger (20) is greater than the transmission rate of the first auger (2), so that solid particles in the box (22) are not accumulated, thereby preventing the fire from spreading in the opposite direction.

3. A solid particle heating stove, comprising a combustion chamber (1), a first auger (2) communicating with the combustion chamber (1), and a first motor (6) driving the first auger (2), characterized in that: A slag outlet (15) is provided at the bottom of the combustion chamber (1), and a slag discharge plate (9) is provided below the slag outlet (15). A cylindrical cam (7) is installed between the first motor (6) and the twist shaft (3) of the first auger (2). The cylindrical cam (7) has a rotating curve driving part (8). The rotating curve driving part (8) is in sliding cooperation with a guide column (10) provided at the tail of the slag discharge plate (9). When the cylindrical cam (7) rotates, it drives the slag discharge plate (9) to perform a reciprocating push-pull motion.

4. A solid particle heating stove according to claim 3, characterized in that: The machine also includes a reset spring (14), one end of which is connected to the slag discharge plate (9) and the other end of which is connected to the machine body; when the slag discharge plate (9) is pushed to the top by the rotating curve driving portion (8) of the cylindrical cam (7), the slag discharge plate (9) closes the slag drop opening (15), and the reset spring (14) is stretched to store force; when the guide column (10) begins to escape from the top of the rotating curve driving portion (8) of the cylindrical cam (7), the reset spring (14) is reset to drive the slag discharge plate (9) to reset, and the slag drop opening (15) is opened.

5. The solid particle heating stove according to claim 3, characterized in that: A spiral groove (17) is provided on the rotating curve driving portion (8) of the cylindrical cam (7), and a guide column (10) at the tail of the slag discharge plate (9) is provided in the groove (17) to form a sliding fit, and the slag discharge plate (9) is driven to perform reciprocating motion as the high point and the low point of the curve are rotated and switched.

6. A solid particle heating stove according to claim 4 or 5, characterized in that: A bearing (18) is provided on the guide column (10).

7. The solid particle heating stove according to claim 3, characterized in that: The slag discharge plate (9) is provided with a plurality of ventilation holes (16).

8. The solid particle heating stove according to claim 3, characterized in that: A guide groove (11) is provided at one end of the slag discharge plate (9) close to the guide column (10), and a guide rod (23) is fixed on the machine body, and the guide rod (23) is slidably engaged with the guide groove (11).

9. A solid particle heating stove according to any one of claims 1-3, characterized in that: It also includes an electric heating rod (12), the heating end of the electric heating rod (12) extends into the combustion chamber (1).

10. A solid particle heating stove according to any one of claims 1-3, characterized in that: It also includes a blower (4), wherein an air outlet of the blower (4) opens into an ash hopper (13) below the combustion chamber (1).

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