Biomass fuel feeding device and combustion system
By using an inclined feeding device and blower design, the problem of mismatch between the feeding speed and the loading speed in the biomass combustion system is solved, achieving material dispersion and equipment anti-clogging during rapid feeding, and improving combustion efficiency and equipment maintainability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-31
AI Technical Summary
Existing biomass combustion systems are prone to clogging at the feed inlet during rapid feeding, and the feeding speed is difficult to match the feeding speed, leading to equipment damage.
The inclined lifting device and blower design, through the combination of the first and second material pipes, combined with the blower blowing airflow at the corner of the second material pipe, realize the rapid falling and dispersion of materials, avoid blockage, and enhance negative pressure to suck up materials when needed.
It enables timely falling and dispersion of materials during rapid feeding, avoiding blockages, improving feeding efficiency and combustion effect, and facilitating equipment maintenance.
Smart Images
Figure CN224065519U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biomass combustion device optimization technology, specifically, a biomass fuel feeding device and combustion system. Background Technology
[0002] Compared with coal, biomass pellets have advantages in combustion efficiency, operating costs, environmental friendliness, combustion characteristics, and policy support, so more and more customers are choosing biomass pellets as fuel.
[0003] Currently available biomass combustion systems are characterized by complex structures, large sizes, high costs, and a tendency to burn out the furnace. Furthermore, the feeding speed of existing biomass combustion systems' feeders cannot match the feeding speed of the loader. Specifically, because feeders typically use pipes to allow biomass fuel to flow into the combustion chamber, the current feeders, with a fixed pipe diameter at the feed inlet, have a very low full-load feeding capacity. When rapid feeding is required, i.e., when the loader's feeding speed is high enough, the low upper limit of the feeding speed easily causes blockage at the feed inlet. As the loader's feeding speed increases, material blockage can also easily damage the loader. Utility Model Content
[0004] One of the objectives of this invention is to provide a biomass fuel feeding device to solve the problem that the feeding speed of existing feeding devices is difficult to match with the feeding speed when feeding a large amount of fuel.
[0005] The second objective of this utility model is to provide a biomass fuel combustion system that can not only adapt to slow feeding, but also prevent blockage due to untimely feeding during rapid feeding.
[0006] To achieve one of the above objectives, the present invention employs the following technical means:
[0007] A biomass fuel feeding device includes an inclined lifting device. The top of the lifting device serves as a discharge end and is connected to a vertically downward first material pipe. The bottom end of the first material pipe is connected to a downwardly inclined second material pipe, the bottom end of which serves as a discharge outlet. A blower is installed on the side wall of the first material pipe, and the blower's air outlet is horizontally positioned. The blower is located at the corner where the first material pipe and the second material pipe meet, and the blower's air outlet is connected to the material channel formed by the connection between the first material pipe and the second material pipe.
[0008] Preferably, the material lifting device is a auger feeder.
[0009] Furthermore, the blower's air inlet is connected to the material channel via an air inlet pipe, the air inlet pipe extends into the material channel and into the second material pipe, and the air outlet of the air inlet pipe is positioned facing the bottom end of the second material pipe.
[0010] Furthermore, the air inlet pipe includes a horizontal pipe extending into the first material pipe and an inclined pipe disposed inside the second material pipe and coaxially disposed with the second material pipe. The horizontal pipe and the inclined pipe are connected and disposed in communication. The gap between the inner wall of the second material pipe and the outer wall of the inclined pipe serves as a gap for material to pass through.
[0011] Furthermore, a support rod is installed around the outer wall of the inclined tube along its axis, and the other end of the support rod is connected to the inner wall of the second material tube. There are three support rods, and adjacent support rods are equidistant from each other.
[0012] Furthermore, the side wall of the first material pipe is connected to a ventilation pipe, which is inclined upwards, and a cover is detachably installed at the opening of the ventilation pipe.
[0013] The feeding device involved in this utility model has the following beneficial effects during use:
[0014] Biomass material is lifted to a high position by a feeding device and falls from the discharge end into the first feed pipe under gravity. It then enters the combustion chamber through a downward-sloping second feed pipe. The vertically positioned first feed pipe allows the material to fall quickly, while the inclined second feed pipe slows it down, reducing its movement speed and causing some material to accumulate in the second feed pipe. This allows the material to enter the combustion chamber in a concentrated state, increasing the amount of material fed per unit time while maintaining a constant material velocity. Furthermore, a blower directs air into the material channel. The blower is positioned at the junction of the first and second feed pipes, allowing a large amount of air to enter the combustion chamber through the inclined second feed pipe. This not only prevents the second feed pipe from becoming blocked due to material accumulation but also quickly disperses the material falling from the second feed pipe, preventing excessive material buildup that could negatively impact combustion efficiency. Furthermore, by using a blower, when a large amount of airflow enters the combustion chamber through the second feed pipe, and rapid feeding is required (i.e., when the feeding speed of the lifting device increases), the blower quickly blows the material out of the second feed pipe, preventing material accumulation. At the same time, the outward airflow in the second feed pipe can also generate negative pressure, allowing the material in the first feed pipe to enter the second feed pipe more quickly and be added to the combustion chamber. This effectively avoids blockages caused by delayed material discharge from the first and second feed pipes due to the increased feeding speed of the lifting device.
[0015] Furthermore, in order to achieve the second objective mentioned above, this application employs the following technical means:
[0016] A biomass fuel combustion system includes the aforementioned biomass fuel feeding device. The first feed pipe includes a positioning pipe connected to the feeding device. The bottom end of the positioning pipe is detachably connected to a connecting pipe. The blower is installed on the side wall of the connecting pipe. The second feed pipe includes a passing pipe fixedly connected to the connecting pipe. The bottom end of the passing pipe is coaxially detachably connected to a discharge pipe extending into the burner.
[0017] Furthermore, the air outlet of the air inlet pipe is located inside the material passage pipe.
[0018] The biomass fuel combustion system disclosed in this application has the following beneficial effects during use:
[0019] By placing the air inlet pipe inside the second feed pipe, the airflow blown in by the blower is prevented from flowing upwards into the first feed pipe, thus avoiding any obstruction of material flow in the first feed pipe due to the blower. Furthermore, when the blower increases its force, it can better generate negative pressure, allowing material in the first feed pipe to be drawn into the second feed pipe, and then quickly enter the burner under the action of the blower. Moreover, by disassembling the connecting pipes and positioning pipes, as well as the connecting feed pipes and discharge pipes, the section containing the blower can be easily replaced and maintained. Only the entire unit needs to be replaced for quick maintenance. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the feeding device of this utility model.
[0021] Figure 2 This is a schematic diagram of the combustion system of this utility model.
[0022] Among them, 1-lifting device, 2-first material pipe, 21-positioning pipe, 22-connecting pipe, 3-second material pipe, 31-passing pipe, 32-discharging pipe, 4-blower, 5-material channel, 6-air inlet pipe, 61-horizontal pipe, 62-inclined pipe, 7-support rod, 8-ventilation pipe, 9-baffle, 10-burner. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Please refer to Figure 1As shown, a biomass fuel feeding device includes an inclined lifting device 1. The top of the lifting device 1 serves as a discharge end and is connected to a vertically downward first material pipe 2. The bottom end of the first material pipe 2 is connected to a downwardly inclined second material pipe 3, and the bottom end of the second material pipe 3 serves as a discharge port. A blower 4 is installed on the side wall of the first material pipe 2. The blower 4 has a horizontally positioned air outlet and is located at the corner where the first material pipe 2 and the second material pipe 3 meet. The air outlet of the blower 4 is connected to a material channel 5 formed by the connection between the first material pipe 2 and the second material pipe 3.
[0030] In this way, the biomass material is lifted to a high position by the lifting device 1, and then falls from the unloading end into the first feed pipe 2 under gravity. It then enters the combustion chamber through the downward-sloping second feed pipe 3. The vertically arranged first feed pipe 2 allows the material to fall quickly, while the inclined second feed pipe 3 slows down the material, reducing its movement speed and causing some material to accumulate in the second feed pipe 3. This allows the material to enter the combustion chamber in an accumulated state, thus increasing the amount of material fed per unit time while maintaining a constant material velocity. Furthermore, a blower 4 blows air into the material channel 5. The air blown in by the blower 4 is positioned at the junction of the first and second feed pipes 2 and 3, allowing a large amount of air to enter the combustion chamber through the inclined second feed pipe 3. This not only prevents the second feed pipe 3 from becoming blocked due to material accumulation, but also quickly disperses the material falling from the second feed pipe 3, preventing the material from becoming difficult to disperse due to excessive feeding and affecting combustion efficiency. Furthermore, by using the blower 4, when a large amount of airflow enters the combustion chamber through the second material pipe 3, and when rapid feeding is required (i.e., when the feeding speed of the lifting device 1 increases), the blower 4 quickly blows the material out of the second material pipe 3, preventing material accumulation. At the same time, the outward airflow in the second material pipe 3 can also generate negative pressure, allowing the material in the first material pipe 2 to enter the second material pipe 3 more quickly and be added to the combustion chamber. This effectively prevents blockage caused by the increased feeding speed of the lifting device 1, which could result in untimely discharge from the first and second material pipes 2 and 3.
[0031] Specifically, the material lifting device 1 is a auger feeder.
[0032] Furthermore, in order to ensure that the airflow blown into the blower 4 does not flow into the first material pipe 2, thereby avoiding affecting the material feeding of the first material pipe 2, the blower port of the blower 4 is connected to the material channel 5 through the air inlet pipe 6. The air inlet pipe 6 extends into the material channel 5 and into the second material pipe 3, and the air outlet of the air inlet pipe 6 is set towards the bottom end of the second material pipe 3.
[0033] Specifically, for the air inlet pipe 6, the air inlet pipe 6 includes a horizontal pipe extending into the first material pipe 2 and an inclined pipe disposed inside the second material pipe 3 and coaxially disposed with the second material pipe 3. The horizontal pipe and the inclined pipe are connected and disposed in communication. The gap between the inner wall of the second material pipe 3 and the outer wall of the inclined pipe serves as a gap for material to pass through.
[0034] The outer wall of the inclined tube is equipped with a support rod 7 around its axis. The other end of the support rod 7 is connected to the inner wall of the second material tube 3. There are three support rods 7, and adjacent support rods 7 are equidistant from each other.
[0035] In this way, the stability of the inclined tube is increased by setting the support rod 7, so as to avoid the inclined tube shaking during the operation of the blower 4, which would affect the movement of materials in the second feed pipe 3.
[0036] Furthermore, in order to prevent some material from remaining on the side of the support rod 7 facing the first material pipe 2 after feeding is stopped, a ventilation pipe 8 is connected to the side wall of the first material pipe 2. The ventilation pipe 8 is inclined upward, and a cover 9 is detached and installed at the pipe opening of the ventilation pipe 8.
[0037] After feeding is complete, the baffle 9 is opened, and the blower 4 is turned on again. The air inlet pipe 6 continuously blows air, drawing air from outside the ventilation pipe 8 into the first material pipe 2. The drawn-in air is then discharged through the second material pipe 3. This airflow generated by the suction blows away any remaining material on the support rod 7 towards the first material pipe 2. This prevents material residue, and the upward tilt design effectively prevents material from entering the ventilation pipe 8 as it falls through the first material pipe 2, thus avoiding blockage of the ventilation pipe 8.
[0038] Furthermore, in another embodiment, please combine with Figure 2 As shown, a biomass fuel combustion system includes the aforementioned biomass fuel feeding device. The first feed pipe 2 includes a positioning pipe 21 that communicates with the feeding device 1. The bottom end of the positioning pipe 21 is detachably connected to a connecting pipe 22. The blower 4 is installed on the side wall of the connecting pipe 22. The second feed pipe 3 includes a passing pipe 31 that is fixedly connected to the connecting pipe 22. The bottom end of the passing pipe 31 is coaxially detachably connected to a discharge pipe 32 that extends into the burner 10.
[0039] In this way, by placing the air inlet pipe 6 inside the second feed pipe 3, it is ensured that the airflow blown in by the blower 4 will not flow upwards into the first feed pipe 2, thus preventing the material from falling into the first feed pipe 2 due to the placement of the blower 4. Furthermore, when the blower 4 increases its airflow, it can better generate negative pressure, allowing the material in the first feed pipe 2 to be drawn into the second feed pipe 3, and then quickly enter the burner 10 under the action of the blower 4. Moreover, by disassembling the connecting pipe 22 and the positioning pipe 21, as well as the connecting material pipe 31 and the unloading pipe 32, the part containing the blower 4 can be easily replaced and maintained. Only the entire unit needs to be replaced, allowing for quick maintenance.
[0040] Furthermore, the air outlet of the air inlet pipe 6 is located inside the material passage pipe 31.
[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A biomass fuel charging device characterized by comprising: The application relates to a material lifting device (1) comprising a first material pipe (2) vertically downwardly communicated with the top end of the material lifting device (1) as a discharging end, a second material pipe (3) downwardly communicated with the bottom end of the first material pipe (2), a bottom end of the second material pipe (3) as a discharging port, a side wall of the first material pipe (2) provided with a blower (4), a blowing port of the blower (4) horizontally arranged, the blower (4) arranged at a corner communication position of the first material pipe (2) and the second material pipe (3), and the blowing port of the blower (4) communicated with a material channel (5) formed by the first material pipe (2) and the second material pipe (3).
2. The biomass fuel charging device according to claim 1, wherein The material lifting device (1) is a Jiaolong material lifting machine.
3. The biomass fuel charging device according to claim 1, wherein The blowing port of the blower (4) is communicated with the material channel (5) through an air inlet pipe (6), the air inlet pipe (6) extends into the material channel (5) and extends into the second material pipe (3), and the air outlet end of the air inlet pipe (6) is arranged towards the bottom end of the second material pipe (3).
4. The biomass fuel charging apparatus according to claim 3, wherein The air inlet pipe (6) comprises a horizontal pipe (61) extending into the first material pipe (2) and an inclined pipe (62) arranged in the second material pipe (3) and coaxially arranged with the second material pipe (3), the horizontal pipe (61) and the inclined pipe (62) are communicated, and a gap between the inner wall of the second material pipe (3) and the outer wall of the inclined pipe (62) is used for material passing.
5. A biomass fuel charging device according to claim 4, wherein Support rods (7) are arranged on the outer wall of the inclined pipe (62) around the axis, the other end of the support rod (7) is connected with the inner wall of the second material pipe (3), there are three support rods (7), and adjacent support rods (7) are equidistantly arranged.
6. A biomass fuel charging device according to claim 5, wherein A ventilation pipe (8) is communicated with the side wall of the first material pipe (2), the ventilation pipe (8) is upwardly and obliquely arranged, and a cover (9) is detachably arranged at the pipe opening position of the ventilation pipe (8).
7. A biomass fuel combustion system characterized by, The application further relates to a biomass fuel feeding device, the first material pipe (2) comprises a positioning pipe (21) communicated with the material lifting device (1), the bottom end of the positioning pipe (21) is detachably communicated with a connecting pipe (22), the blower (4) is arranged on the side wall of the connecting pipe (22), the second material pipe (3) comprises a material passing pipe (31) fixedly communicated with the connecting pipe (22), and the bottom end of the material passing pipe (31) is coaxially and detachably communicated with a discharging pipe (32) of a combustor (10).
8. A biomass fuel combustion system according to claim 7, wherein, The air outlet of the air inlet pipe (6) is arranged in the material passing pipe (31).