A biomass boiler feeding device

Abstract

The present application relates to the technical fields of biomass boiler, especially to a biomass boiler feeding device, which comprises a shell including a containing part and a feeding hopper arranged on the containing part; an output mechanism including a driving member arranged on the containing part and a movable coupling arranged on the output end of the driving member, the driving member being connected with a barrel through the movable coupling; a limiting mechanism arranged on the movable coupling; the surface of the barrel is uniformly provided with through holes, and the barrel is provided with an extrusion knife; the biomass garbage is dried by using the heat of the boiler, and the biomass garbage is crushed by the rotation of the barrel and the extrusion knife, so that the size of the biomass fuel particles is more uniform; since the biomass garbage falling from the extrusion is uniformly dropped, the generation of the phenomena of insufficient combustion, coking and ash accumulation caused by the moisture content, material accumulation and uneven particles can be avoided.

Description

Technical Field

[0001] This invention relates to the field of biomass boiler technology, and in particular to a biomass boiler feeding device. Background Technology

[0002] As an important component of renewable energy, the resource utilization of biomass waste in boilers has become a research hotspot. Biomass waste (such as agricultural straw, forestry waste, food processing waste, etc.) has the characteristics of high volatile matter, low sulfur and nitrogen content, and renewability. Compared with traditional fossil fuels, the carbon dioxide produced by its combustion can be recycled by plant photosynthesis.

[0003] After fermentation for a certain period of time, biomass waste is sent to the combustion chamber of a boiler for combustion via a conveyor belt or screw conveyor. However, the moisture content, ash melting point, particle size and other parameters of different types of biomass waste fluctuate significantly, resulting in insufficient combustion stability and problems such as coking and ash accumulation, which affect the thermal efficiency and service life of the boiler. In addition, the conventional feeding method can easily lead to the accumulation of biomass fuel, which is more likely to cause incomplete combustion, coking and ash accumulation.

[0004] Therefore, a biomass boiler feeding device is proposed. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that conventional feeding methods tend to cause biomass fuel to accumulate, which can lead to incomplete combustion, coking, and ash accumulation.

[0006] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a biomass boiler feeding device, comprising,

[0007] The housing includes a receiving portion and a feed hopper disposed on the receiving portion;

[0008] The output mechanism includes a drive member disposed on the receiving portion and a movable coupling disposed at the output end of the drive member, wherein the drive member is connected to the cylinder via the movable coupling;

[0009] A limiting mechanism is provided on the movable coupling;

[0010] The surface of the cylinder is uniformly provided with through holes, and the cylinder is provided with extrusion blades;

[0011] When the cylinder rotates, it will sway due to the centrifugal force generated by the extrusion blade.

[0012] In a preferred embodiment of the biomass boiler feeding device of the present invention: two cylinders are provided, and the extrusion blades are arranged in a V-shape from bottom to top on the outer wall of the cylinder;

[0013] The extrusion blades on the two cylinders are staggered.

[0014] In a preferred embodiment of the biomass boiler feeding device of the present invention: it further includes a fixing blade disposed in the receiving part;

[0015] The receiving part has two sets of fixing blades, which are respectively located on different sides of the receiving part. The two sets of fixing blades are evenly arranged from bottom to top and are staggered.

[0016] In a preferred embodiment of the biomass boiler feeding device of the present invention: the receiving part includes a processing chamber and a guide chamber disposed at the upper end of the processing chamber;

[0017] The cylindrical body is movably disposed within the processing chamber;

[0018] The outer wall of the cylinder and the inner wall of the processing chamber constitute a material storage space;

[0019] When the cylinder moves, it can squeeze the material in the storage space out through the through hole.

[0020] In a preferred embodiment of the biomass boiler feeding device of the present invention: a docking chamber is provided at the lower end of the processing chamber;

[0021] The docking chamber is connected to the feed channel of the boiler.

[0022] In a preferred embodiment of the biomass boiler feeding device of the present invention: the bottom end of the inner wall of the processing chamber and the bottom end of the cylinder are slidably connected, the bottom end of the cylinder is open, and the bottom end of the processing chamber is provided with a discharge port. When the cylinder moves, the discharge port is always located inside the bottom opening of the cylinder.

[0023] In a preferred embodiment of the biomass boiler feeding device of the present invention: the movable coupling includes a first universal coupling disposed at the output end of the drive component, and a sliding shaft disposed on the first universal coupling. A sliding sleeve is slidably disposed on the sliding shaft, and a second universal coupling is disposed at the end of the sliding sleeve.

[0024] In a preferred embodiment of the biomass boiler feeding device of the present invention: the limiting mechanism includes a first limiting sleeve and a first connecting shaft disposed on the first limiting sleeve, a second limiting sleeve is slidably connected to the outer wall of the first connecting shaft, the second limiting sleeve is provided with a second connecting shaft, and a fixing sleeve is slidably disposed on the second connecting shaft.

[0025] In a preferred embodiment of the biomass boiler feeding device of the present invention: the bottom end of the cylinder is provided with a lower limiting shaft, and the top end of the cylinder is provided with an upper limiting shaft;

[0026] Both the lower limit shaft and the upper limit shaft have a limiting mechanism on their outer walls.

[0027] In a preferred embodiment of the biomass boiler feeding device of the present invention: the upper end of the guide chamber is provided with a cavity, and the top of the cavity is provided with an end cover;

[0028] The driving component is disposed on the end cover, and the feed hopper is disposed on the chamber;

[0029] Both the docking chamber and the guiding chamber are arranged in a trumpet shape.

[0030] The beneficial effects of this invention are as follows: it utilizes the heat of the boiler to dry biomass waste, and through the rotation of the cylinder and the crushing of the biomass waste by the extrusion blade, the size of the biomass fuel particles becomes more uniform. Since the cylinder is swaying, the biomass waste that is extruded and falls off is evenly distributed. This avoids the problems of incomplete combustion, coking, and ash accumulation caused by moisture content, material accumulation, and uneven particle size in traditional feeding equipment. It can effectively improve the utilization rate of biomass fuel, enhance combustion stability, and improve boiler thermal efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0032] Figure 1 A schematic diagram of the overall structure of the biomass boiler feeding device is shown.

[0033] Figure 2 A schematic diagram of the internal structure of the biomass boiler feeding device is shown.

[0034] Figure 3 A schematic diagram of the output mechanism of the biomass boiler feeding device is shown.

[0035] Figure 4 A schematic diagram of the movable coupling of the biomass boiler feeding device is shown.

[0036] Figure 5 A schematic diagram of the structure of the biomass boiler feeding device, including the cylinder, through holes, and extrusion blades, is shown.

[0037] Figure 6 The diagram shows the positional distribution of the fixed blades and extrusion blades in the biomass boiler feeding device.

[0038] Figure 7 A schematic diagram of the structure of the biomass boiler feeding device and the processing chamber is shown.

[0039] Figure 8 A cross-sectional view of the biomass boiler feeding device is shown as a schematic diagram.

[0040] In the diagram: 1. Shell; 11. Receiving part; 111. Processing chamber; 112. Guiding chamber; 113. Docking chamber; 114. Chamber; 115. End cover; 12. Feed hopper; 2. Output mechanism; 21. Drive component; 22. Movable coupling; 221. First universal coupling; 222. Sliding shaft; 223. Sliding sleeve; 224. Second universal coupling; 23. Cylinder; 231. Through hole; 232. Extrusion knife; 24. Lower limit shaft; 25. Upper limit shaft; 3. Limiting mechanism; 31. First limit sleeve; 32. First connecting shaft; 33. Second limit sleeve; 34. Second connecting shaft; 35. Fixed sleeve; 4. Fixed knife. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0042] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0043] Reference Figure 1 This embodiment provides a biomass boiler feeding device, including,

[0044] The housing 1 includes a receiving section 11 and a feeding hopper 12 disposed on the receiving section 11; the feeding hopper 12 serves as an inlet for adding biomass waste, and the receiving section 11 contains the added biomass waste.

[0045] The output mechanism 2 includes a drive member 21 disposed on the receiving part 11 and a movable coupling 22 disposed at the output end of the drive member 21. The drive member 21 is connected to the cylinder 23 through the movable coupling 22. The movable coupling 22 enables the cylinder 23 to move in the X-axis and Z-axis directions, so that after relative movement occurs between the drive member 21 and the cylinder 23, the drive member 21 can still control the cylinder 23 to rotate. In this embodiment, the drive member 21 is a drive motor, and the movable coupling 22 can be a cross-shaft telescopic universal coupling.

[0046] The limiting mechanism 3 is located on the movable coupling 22; the limiting mechanism 3 is used to ensure that the cylinder 23 always remains in a vertical state.

[0047] The surface of the cylinder 23 is uniformly provided with through holes 231, and the cylinder 23 is provided with extrusion blades 232; when the cylinder 23 rotates, it will shake due to the centrifugal force generated by the extrusion blades 232.

[0048] Preferably, the cylinder 23 is provided with two parts, and the extrusion blades 232 are arranged in a V-shape from bottom to top on the outer wall of the cylinder 23; specifically, refer to Figure 5 The extrusion blades 232 are arranged in a symmetrical spiral on the outer wall surface of the cylinder 23, and their overall path is V-shaped. The rotation direction of the cylinder 23 is opposite to the direction of the tip of the V-shape.

[0049] The extrusion blades 232 on the two cylinders 23 are staggered. Therefore, when the two cylinders 23 rotate, the extrusion blades 232 on the two cylinders 23 will work in a staggered manner to crush and extrude the biomass waste.

[0050] In operation, the drive component 21 rotates, causing the movable coupling 22 to rotate. The movable coupling 22 then rotates the cylinder 23 to operate. The receiving section 11 is connected to the boiler's feeding port. The boiler has high pressure and temperature, and flames are burning. With the cylinder 23 inside the receiving section 11, airflow can only pass through the through-hole 231, increasing the difficulty of airflow and thus preventing backfire. Additionally, the pressure difference inside the boiler causes heat to be discharged through the through-hole 231 into the receiving section 11. Biomass waste is fed into the feed hopper 12, where the heat flow dries it. Because the discharge channel for biomass waste is the through-hole 231, larger pieces of biomass waste can be discharged. The waste is initially stored in the receiving section 11, while smaller pieces of biomass waste can fall into the boiler for combustion through the through-hole 231. Smaller pieces are dried more quickly, while larger pieces remain in the receiving section 11, extending the drying time. During the rotation of the cylinder 23, the extrusion blades 232 rotate in an alternating pattern, crushing the larger pieces of biomass waste. However, the arrangement of the extrusion blades 232 causes a shift in the center of gravity of the cylinder 23, resulting in centrifugal force during rotation. Under the limiting action of the limiting mechanism 3 and the power output maintained by the movable coupling 22, the cylinder 23 can sway. Since the extrusion blades 232 are not uniformly arranged in a circular pattern on the outside of the cylinder 23, this also... The cylinder 23 allows biomass waste to fall easily onto its exterior, facilitating its entry into the working area of ​​the extrusion blades 232 for crushing. Because the movable coupling 22 allows the cylinder 23 to sway, it provides a buffering effect during crushing. When encountering larger pieces of biomass material, the movement of the cylinder 23 increases the relative distance between the extrusion blades 232, altering their gap. Combined with the swaying caused by the cylinder's own weight, this improves the crushing effect and allows for the gradual crushing of larger, more difficult-to-crush biomass waste, preventing the cylinder 23 from jamming and reducing wear on the extrusion blades 232. Furthermore, the rotation of the extrusion blades 232 also... The stirring action mixes the internal biomass waste, and combined with the heat generated by the boiler, improves the drying effect, resulting in a more uniform moisture content in the crushed biomass waste. Furthermore, because the crushed biomass waste is discharged through the through-hole 231, the shaking of the cylinder 23 continuously compresses the waste, forcing it out of the through-hole 231. The rotation of the extrusion blades 232 further improves the efficiency of waste discharge from the through-hole 231, preventing blockages. The shaking of the cylinder 23 also ensures that the extruded biomass waste falls evenly, avoiding the incomplete combustion, coking, and ash accumulation problems caused by high moisture content and material accumulation in traditional feeding equipment.This can effectively improve the utilization rate of biomass fuel, enhance combustion stability, and increase boiler thermal efficiency.

[0051] Reference Figure 6 As an optional embodiment, it also includes a fixing blade 4 disposed in the receiving part 11; the fixing blade 4 in the receiving part 11 is provided in two sets, the two sets of fixing blade 4 are respectively disposed on different sides of the receiving part 11, the two sets of fixing blade 4 are evenly arranged from bottom to top, and the two sets of fixing blade 4 are staggered.

[0052] When the cylinder 23 rotates, the extrusion blade 232, in conjunction with the fixed blade 4, can further crush the biomass waste inside.

[0053] Reference Figures 1 to 8 As an optional embodiment: the receiving part 11 includes a processing chamber 111 and a guide chamber 112 disposed at the upper end of the processing chamber 111; the guide chamber 112 serves as a guide tool for guiding biomass waste into the processing chamber 111, and the cylinder 23 is movably disposed inside the processing chamber 111; the outer wall of the cylinder 23 and the inner wall of the processing chamber 111 constitute a storage space; when the cylinder 23 moves, it can squeeze the material in the storage space out through the through hole 231.

[0054] After the biomass waste is put in, it is guided into the processing chamber 111 through the guide chamber 112. Due to the structural design of the extrusion blade 232, there are fewer obstructions in the storage space, and the biomass waste has more space to enter. As the cylinder 23 shakes, the shape of the storage space will change continuously, and the biomass waste inside will be squeezed and squeezed out from the through hole 231.

[0055] The lower end of the processing chamber 111 is provided with a docking chamber 113; the docking chamber 113 is connected to the feed channel of the boiler, and the extruded biomass waste falls from the docking chamber 113 and then enters the feed channel of the boiler.

[0056] The bottom of the inner wall of the processing chamber 111 is slidably connected to the bottom of the cylinder 23. The bottom of the cylinder 23 is open. The bottom of the processing chamber 111 is provided with a discharge port. When the cylinder 23 moves, the discharge port is always located inside the bottom opening of the cylinder 23. This ensures that the biomass waste is always in the storage space. Even when the cylinder 23 shakes, it will not be discharged directly from the discharge port due to the displacement of the cylinder 23. Instead, it needs to be squeezed out from the through hole 231 on the cylinder 23 and then fall from the discharge port.

[0057] Reference Figures 1 to 8 As an optional embodiment: the movable coupling 22 includes a first universal coupling 221 disposed at the output end of the drive member 21, and a sliding shaft 222 disposed on the first universal coupling 221. A sliding sleeve 223 is slidably disposed on the sliding shaft 222, and a second universal coupling 224 disposed at the end of the sliding sleeve 223.

[0058] The sliding shaft 222 is a spiral shaft, so relative sliding can occur between the sliding shaft 222 and the sliding sleeve 223, but relative rotation cannot occur. The angle adjustment of the first universal coupling 221 and the second universal coupling 224, combined with the sliding extension and retraction of the sliding shaft 222 and the sliding sleeve 223, allows the cylinder 23 to sway in the processing chamber 111 while maintaining rotation.

[0059] The limiting mechanism 3 includes a first limiting sleeve 31 and a first connecting shaft 32 disposed on the first limiting sleeve 31. A second limiting sleeve 33 is slidably connected to the outer wall of the first connecting shaft 32. A second connecting shaft 34 is disposed on the second limiting sleeve 33. The mechanism also includes a fixing sleeve 35 slidably disposed on the second connecting shaft 34.

[0060] The bottom end of the cylinder 23 is provided with a lower limit shaft 24, and the top end of the cylinder 23 is provided with an upper limit shaft 25.

[0061] Both the lower limit shaft 24 and the upper limit shaft 25 are equipped with a limit mechanism 3 on their outer walls.

[0062] The lower limit shaft 24 and the upper limit shaft 25 are both rotatably connected to the first limit sleeve 31. Since the first connecting shaft 32 and the second limit sleeve 33 are slidably connected, the second connecting shaft 34 and the fixed sleeve 35 can slide. Therefore, the lower limit shaft 24 and the upper limit shaft 25 can move in the X and Z directions to limit the lower limit shaft 24 and the upper limit shaft 25, keep the cylinder 23 in a vertical state, and improve the stability of the cylinder 23 when it shakes.

[0063] Preferably, the cross-sections of the first connecting shaft 32 and the second connecting shaft 34 are triangular or square. The first connecting shaft 32 can only slide within the second limiting sleeve 33 and cannot rotate relative to each other. The second connecting shaft 34 can only slide within the fixing sleeve 35 and cannot rotate relative to each other.

[0064] Reference Figures 1 to 8 As an optional embodiment: the upper end of the guide chamber 112 is provided with a cavity 114, and the top of the cavity 114 is provided with an end cover 115; the drive member 21 is provided on the end cover 115, and the feed hopper 12 is provided on the cavity 114; both the docking chamber 113 and the guide chamber 112 are arranged in a trumpet shape.

[0065] The cross-sectional area of ​​the docking chamber 113 gradually decreases from bottom to top, while the cross-sectional area of ​​the guiding chamber 112 gradually increases from bottom to top. The boiler has high pressure, and hot flow enters the docking chamber 113. The docking chamber 113 has a large cross-section, resulting in a slow hot flow velocity. Furthermore, the top is obstructed by the cylinder 23 and the processing chamber 111, which helps to prevent backfire. After entering the processing chamber 111, the hot flow passes through the through-hole 231, where the flow cross-section decreases and the flow velocity increases. This process heats and dries the biomass waste located in the storage space, ultimately... After passing through the guide chamber 112, due to the increase in cross-section and subsequent deceleration, the drive unit 21 controls the cylinder 23 to rotate. During the rotation, due to centrifugal force, the cylinder 23 will sway within the processing chamber 111. This swaying changes the shape of the storage space, causing biomass waste falling to the end of the cylinder 23 to be shaken off. Combined with the change in the shape of the storage space, this facilitates the entry of biomass fuel into the storage space. The rotation of the cylinder 23 and its swaying design improve the crushing effect of the extrusion blade 232 and the fixed blade 4. It should be noted that, referring to... Figure 8 The outer diameter of the extrusion blade 232 is smaller than the inner diameter of the storage space, which ensures the shaking of the cylinder 23. The inner diameter of the fixed blade 4 is larger than the outer diameter of the cylinder 23, which also ensures the shaking of the cylinder 23. During the rotation of the cylinder 23, the extrusion blade 232 and the fixed blade 4 can crush the biomass waste inside, while stirring and mixing it to make it uniform in texture, improve the drying effect, and reduce the change in moisture content. The rotation direction of the cylinder 23 is opposite to the direction of the V-shaped tip. When the V-shaped extrusion blade 232 rotates, it can assist the biomass waste to move towards the middle area of ​​the storage space, which facilitates the entry of biomass waste into the storage space and avoids excessive compression at the bottom of the storage space, reducing the running resistance. When the cylinder 23 shakes, the crushed biomass waste in the storage space is squeezed out from the through hole 231, so that it falls evenly into the boiler for combustion.

[0066] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A biomass boiler feeding device, characterized in that: include, The housing (1) includes a receiving portion (11) and a feed hopper (12) disposed on the receiving portion (11). The output mechanism (2) includes a drive member (21) disposed on the receiving part (11) and a movable coupling (22) disposed at the output end of the drive member (21). The drive member (21) is connected to the cylinder (23) through the movable coupling (22). A limiting mechanism (3) is provided on the movable coupling (22); The surface of the cylinder (23) is uniformly provided with through holes (231), and the cylinder (23) is provided with extrusion blades (232). When the cylinder (23) rotates, it will shake due to the centrifugal force generated by the extrusion blade (232); The receiving part (11) includes a processing chamber (111) and a guide chamber (112) located at the upper end of the processing chamber (111). The cylinder (23) is movably disposed within the processing chamber (111); The outer wall of the cylinder (23) and the inner wall of the processing chamber (111) constitute a storage space; When the cylinder (23) moves, it can squeeze the material in the storage space out through the through hole (231); The cylinder (23) is provided with two parts, and the extrusion blades (232) are arranged in a V-shape from bottom to top on the outer wall of the cylinder (23); The extrusion blades (232) on the two cylinders (23) are staggered; It also includes a fixing knife (4) disposed in the receiving part (11); The receiving part (11) has two sets of fixing blades (4). The two sets of fixing blades (4) are respectively located on different sides of the receiving part (11). The two sets of fixing blades (4) are evenly arranged from bottom to top, and the two sets of fixing blades (4) are staggered.

2. The biomass boiler feeding device according to claim 1, characterized in that: The lower end of the processing chamber (111) is provided with a docking chamber (113); The docking chamber (113) docks with the feed channel of the boiler.

3. The biomass boiler feeding device according to claim 2, characterized in that: The bottom of the inner wall of the processing chamber (111) is slidably connected to the bottom of the cylinder (23). The bottom of the cylinder (23) is open. The bottom of the processing chamber (111) is provided with a discharge port. When the cylinder (23) moves, the discharge port is always located inside the bottom opening of the cylinder (23).

4. The biomass boiler feeding device according to claim 3, characterized in that: The movable coupling (22) includes a first universal coupling (221) disposed at the output end of the drive member (21), and a sliding shaft (222) disposed on the first universal coupling (221). A sliding sleeve (223) is slidably disposed on the sliding shaft (222), and a second universal coupling (224) disposed at the end of the sliding sleeve (223).

5. The biomass boiler feeding device according to claim 4, characterized in that: The limiting mechanism (3) includes a first limiting sleeve (31) and a first connecting shaft (32) disposed on the first limiting sleeve (31). The outer wall of the first connecting shaft (32) is slidably connected to a second limiting sleeve (33). The second limiting sleeve (33) is provided with a second connecting shaft (34) and also includes a fixed sleeve (35) slidably disposed on the second connecting shaft (34).

6. The biomass boiler feeding device according to claim 5, characterized in that: The bottom end of the cylinder (23) is provided with a lower limit shaft (24), and the top end of the cylinder (23) is provided with an upper limit shaft (25). The outer walls of both the lower limit shaft (24) and the upper limit shaft (25) are provided with a limiting mechanism (3).

7. The biomass boiler feeding device according to claim 6, characterized in that: The upper end of the guide chamber (112) is provided with a cavity (114), and the top of the cavity (114) is provided with an end cap (115). The drive unit (21) is disposed on the end cap (115), and the feed hopper (12) is disposed on the chamber (114); Both the docking chamber (113) and the guiding chamber (112) are arranged in a trumpet shape.

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