Anti-blocking biomass spray gun

Abstract

The utility model relates to the technical field of biomass fuel burner, concretely is a kind of anti -blocking biomass spray gun, including fixed frame, the inside of fixed frame is equipped with crushing mechanism, the bottom of crushing mechanism is equipped with conveying structure, drying mechanism is equipped at crushing mechanism and conveying structure, the side of conveying structure is equipped with knock structure, and the design of double crushing roller counter-rotation of crushing mechanism (by first servo motor driving connecting shaft, two crushing rollers are driven synchronous counter-rotation by meshing gear), the agglomerate of the diameter of larger caking or fiber in biomass fuel can be fully pulverized, and the stubborn briquetting formed in storage, transportation of fuel is effectively broken.

Description

Technical Field

[0001] This utility model relates to the field of biomass fuel burner technology, specifically to an anti-clogging biomass spray gun. Background Technology

[0002] As the global energy structure shifts towards cleaner and renewable energy sources, biomass energy (such as straw, wood chips, and rice husks) is widely used in combustion equipment such as industrial boilers and kilns due to its wide availability and low carbon emissions. The stable delivery and efficient combustion of biomass fuel rely on a core component: the biomass spray gun. Its main function is to precisely deliver biomass pellets or fragments to the combustion zone, ensuring thorough mixing of fuel and air and avoiding energy loss and pollutant emissions caused by incomplete combustion.

[0003] However, the inherent physical characteristics of biomass fuel (high moisture content, easy agglomeration, and fibrous impurities) and the structural defects of existing biomass spray guns lead to frequent clogging, high maintenance costs, and poor combustion stability in practical applications, severely restricting the large-scale utilization of biomass energy. Specific technical challenges are as follows: Existing biomass spray guns are mostly equipped with simple feed hoppers or primary screening structures, lacking targeted crushing and humidity control mechanisms. During storage or transportation, biomass fuels (such as straw pellets and wet sawdust) are prone to forming lumps with a diameter of more than 10 mm due to environmental humidity, or agglomerates due to fiber entanglement. These untreated lumps / agglomerates, after entering the spiral conveying pipe of the spray gun, are very likely to "bridge" and accumulate in the gaps between the conveying auger blades, at pipe bends, or at the nozzle inlet, causing conveying interruptions. To clear the blockages, it is necessary to frequently stop the machine to disassemble the spray gun pipe, which not only increases the labor intensity of operators, but also causes the burner to run out of fuel and reduces the operating efficiency of the equipment. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing an anti-clogging biomass spray gun.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a biomass spray gun for preventing blockage, including a fixed frame, a crushing mechanism is provided inside the fixed frame, a conveying structure is provided at the bottom of the crushing mechanism, a drying mechanism is provided at the crushing mechanism and the conveying structure, and a knocking structure is provided on one side of the conveying structure; The crushing mechanism is used for feeding and crushing the incoming material. The drying mechanism is used for drying the crushed material. The conveying structure is used for conveying the crushed material into the combustion zone. The striking structure is used for striking the conveying structure to prevent adhesion.

[0006] Through the coordinated efforts of various departments, a complete process is formed from feeding and crushing to anti-adhesion, avoiding blockages from multiple dimensions and ensuring the stable delivery and combustion of biomass fuel.

[0007] Furthermore, the crushing mechanism includes a crushing box, inside which are provided two crushing rollers, and inside each of the two crushing rollers are provided a connecting shaft. Gears are provided on both of the connecting shafts and on the outside of the crushing box. A first servo motor is provided on the input end of one of the connecting shafts, and a fixed seat is provided at the bottom of the first servo motor.

[0008] By utilizing a structure with dual crushing rollers and gear transmission, large or clump-forming biomass fuels can be efficiently crushed, eliminating the risk of agglomeration at the source and providing a foundation for subsequent blockage prevention.

[0009] Furthermore, the crushing box is fixed to the fixed frame, and the bottom of the fixed seat is fixed to the fixed frame. The first servo motor is used to drive one of the connecting shafts to rotate, thereby driving the gears to rotate. Since the two gears mesh with each other, they drive the two crushing rollers to rotate in opposite directions.

[0010] The fixed structure ensures stable operation of the crushing mechanism, and the gear meshing enables the double crushing rollers to rotate in opposite directions, efficiently completing the crushing of materials and preventing large pieces of uncrushed material from entering subsequent stages and causing blockages.

[0011] Furthermore, the conveying structure includes a connecting bucket, the bottom of which is provided with a spray gun pipe, the inside of which is provided with a conveying auger, and the input end of the conveying auger is provided with a second servo motor.

[0012] By connecting the bucket to stably receive the crushed material, and in conjunction with the spiral structure of the conveying auger, continuous and stable material conveying can be achieved, providing a continuous supply of material to the combustion zone.

[0013] Furthermore, one end of the spray gun tube is connected to the combustion chamber, the second servo motor is used to drive the conveying auger to rotate, thereby evenly conveying the material spiral into the combustion chamber, and the top of the connecting bucket is connected to the crushing box body, thereby receiving the material.

[0014] This ensures that materials are evenly conveyed to the combustion chamber, and the connection between the connecting hopper and the crushing box ensures good continuity of material conveying and prevents material from accumulating at the connection point.

[0015] Furthermore, the drying mechanism includes a mounting box, the top of which is provided with a first air inlet filter, the outer side wall of which is provided with a second air inlet filter, the interior of which is provided with a plurality of heating rods, above which are a plurality of fans, the inner side wall of which is provided with an air outlet filter, and the bottom of which is provided with an air outlet channel.

[0016] By combining filters, heating rods, and fans, clean hot air can be generated, providing conditions for multi-zone drying, effectively reducing material moisture and minimizing the risk of sticking.

[0017] Furthermore, the first and second air intake filters are used to block dust during air intake. The first air intake filter is used to blow airflow through the air outlet channel into the interior of the spray gun pipe, and also through the air outlet filter into the interior of the crushing chamber and the connecting hopper.

[0018] It filters dust from the intake air and thoroughly dries materials in the crushing and conveying stages, further reducing the probability of material sticking and clogging caused by high humidity.

[0019] Furthermore, the striking structure includes a connecting seat, a striking hammer on the top of the connecting seat, a striking head at the output end of the striking hammer, the striking head being connected to a spray gun pipe, a connecting pipe on the back side wall of the striking hammer, and an air compressor at the connection point of the connecting pipe.

[0020] An air compressor drives a hammer to continuously strike the spray gun nozzle, using vibration to dislodge material adhering to the inner wall, preventing material buildup and blockage, and keeping the spray gun nozzle clear.

[0021] The beneficial effects of this utility model are: through the dual crushing rollers rotating in opposite directions design of the crushing mechanism (driven by the first servo motor to connect the shaft, and driven by the meshing gear to rotate the two crushing rollers synchronously), the large-diameter lumps or fiber agglomerates in biomass fuel can be fully crushed, effectively breaking up the stubborn lumps formed in the fuel during storage and transportation.

[0022] The drying mechanism generates stable hot air by installing heating rods and fans inside the chamber. It also achieves "full-process coverage drying" of the crushed fuel by relying on the multi-channel air outlet design of "air outlet channel (to the spray gun pipe) + air outlet filter (to the crushing chamber and connecting hopper)". During the crushing process, the hot air can initially reduce the fuel moisture and prevent the fine materials after crushing from re-agglomerating due to residual moisture. Before conveying, the hot air further dries the fuel in the spray gun pipe to prevent the fuel from sticking to the pipe wall during conveying.

[0023] The striking structure (driven by an air compressor, which acts directly on the spray gun pipe through the striking head) can strike the spray gun pipe in real time during the delivery process, using vibration to shake off the accumulated material (especially the material adhering to fibrous fuels) on the pipe wall. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the main body of this utility model; Figure 2 This is a second-view structural diagram of the main body of this utility model; Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a cross-sectional schematic diagram of the present invention.

[0025] The attached diagram lists the components represented by each number as follows: 10. Fixed frame; 20. Crushing mechanism; 201. Crushing box; 202. Crushing roller; 203. Connecting shaft; 204. Gear; 205. First servo motor; 206. Fixed seat; 30. Drying mechanism; 301. Mounting box; 302. First air inlet filter; 303. Second air inlet filter; 304. Heating rod; 305. Fan; 306. Air outlet filter; 307. Air outlet channel; 40. Conveying structure; 401. Connecting hopper; 402. Spray gun pipe; 403. Conveying auger; 404. Second servo motor; 50. Striking structure; 501. Connecting seat; 502. Striking hammer; 503. Striking head; 504. Air compressor; 505. Connecting pipe. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0029] Example 1 Figure 1 This is a structural diagram of the main body of this utility model. Figure 2 This is a second-view structural diagram of the main body of this utility model. Figure 3 This is a top view of the structure of this utility model. Figure 4 This is a cross-sectional schematic diagram of the present invention, as shown below. Figures 1 to 4 As shown, the device includes a fixed frame 10, a crushing mechanism 20 is provided inside the fixed frame 10, a conveying structure 40 is provided at the bottom of the crushing mechanism 20, a drying mechanism 30 is provided at the crushing mechanism 20 and the conveying structure 40, and a striking structure 50 is provided on one side of the conveying structure 40. The crushing mechanism 20 is used for feeding and crushing the incoming material. The drying mechanism 30 is used for drying the crushed material. The conveying structure 40 is used for conveying the crushed material into the combustion zone. The striking structure 50 is used for striking the conveying structure 40 to prevent adhesion.

[0030] When transporting biomass fuel, the material first enters the crushing mechanism 20 to be crushed, and then the drying mechanism 30 dries the crushed material to reduce humidity and prevent subsequent conveying blockage. Then the conveying structure 40 sends the dried material into the combustion zone. At the same time, the striking structure 50 continuously strikes the conveying structure 40, using vibration to shake off the material adhering to the inner wall. Through the cooperation of various mechanisms, a complete anti-blocking process is formed from feeding, crushing, drying, conveying to anti-adhesion.

[0031] like Figures 2 to 4 As shown, the crushing mechanism 20 includes a crushing box 201. Inside the crushing box 201, there are two crushing rollers 202. Inside each of the two crushing rollers 202, there is a connecting shaft 203. On each of the two connecting shafts 203 and located outside the crushing box 201, there is a gear 204. On the input end of one of the connecting shafts 203, there is a first servo motor 205. At the bottom of the first servo motor 205, there is a fixed seat 206.

[0032] When the crushing mechanism 20 is working, the first servo motor 205 starts and drives one of the connecting shafts 203 to rotate. The gear 204 on the connecting shaft 203 rotates accordingly. Because the two gears 204 mesh with each other, they will drive the other gear 204 and the corresponding connecting shaft 203 to rotate, thereby causing the two crushing rollers 202 to rotate in opposite directions. When the material enters the crushing box 201, the two crushing rollers 202 rotating in opposite directions crush the large pieces of material into small particles suitable for subsequent conveying through squeezing and shearing.

[0033] The crushing box 201 is fixed to the fixed frame 10, and the bottom of the fixed seat 206 is fixed to the fixed frame 10. The first servo motor 205 is used to drive one of the connecting shafts 203 to rotate, which in turn drives the gear 204 to rotate. Since the two gears 204 mesh with each other, they drive the two crushing rollers 202 to rotate in opposite directions.

[0034] The crushing chamber 201 is fixed to the fixed frame 10 to ensure that the crushing mechanism 20 is stable and does not shift when it is working. The fixed base 206 provides stable installation support for the first servo motor 205. When the first servo motor 205 is running, the power is transmitted to one of the connecting shafts 203 to make it rotate. Through the transmission of the meshing gear 204, the power is transmitted to the other connecting shaft 203, and finally the two crushing rollers 202 rotate in opposite directions to complete the crushing operation of the material entering the crushing chamber 201.

[0035] like Figure 4 As shown, the conveying structure 40 includes a connecting bucket 401, a spray gun pipe 402 at the bottom of the connecting bucket 401, a conveying auger 403 inside the spray gun pipe 402, and a second servo motor 404 at the input end of the conveying auger 403.

[0036] The connecting bucket 401 receives the crushed material from the crushing mechanism 20. When the second servo motor 404 starts, the power is transmitted to the conveying auger 403, which drives it to rotate inside the spray gun tube 402. With the help of the spiral structure of the conveying auger 403, the material inside the spray gun tube 402 will be spirally pushed along the length direction during the rotation, so as to evenly transport the material to the combustion chamber connected to one end of the spray gun tube 402.

[0037] One end of the spray gun 402 is connected to the combustion chamber. The second servo motor 404 is used to drive the conveying auger 403 to rotate, thereby conveying the material spiral evenly into the combustion chamber. The top of the connecting bucket 401 is connected to the crushing box 201, thereby receiving the material.

[0038] One end of the spray gun tube 402 is connected to the combustion chamber, providing a channel for material to be transported to the combustion zone; the second servo motor 404 drives the conveying auger 403 to rotate, and its spiral blades generate an axial pushing force on the material in the spray gun tube 402 when rotating, and the spiral structure makes the material transport more uniform and avoids local accumulation; the top of the connecting hopper 401 is connected to the crushing box 201, so that the crushed material can fall directly into the connecting hopper 401 and then into the spray gun tube 402, ensuring the continuity of material transport.

[0039] like Figure 3 and Figure 4As shown, the drying mechanism 30 includes a mounting box 301. The top of the mounting box 301 is provided with a first air inlet filter 302, and the outer side wall of the mounting box 301 is provided with a second air inlet filter 303. The interior of the mounting box 301 is provided with a plurality of heating rods 304, and a plurality of fans 305 are provided above the plurality of heating rods 304. The inner side wall of the mounting box 301 is provided with an air outlet filter 306, and the bottom of the mounting box 301 is also provided with an air outlet channel 307.

[0040] When the drying mechanism 30 is working, outside air enters the mounting box 301 through the first and second air inlet filters 303, and the filters block dust. The incoming air is heated into hot air by the heating rod 304. Under the action of the fan 305, the hot air is blown towards the air outlet filter 306 and the air outlet channel 307. The air outlet channel 307 leads the hot air to the inside of the spray gun pipe 402 to dry the material, and the air outlet filter 306 leads the hot air to the inside of the crushing box 201 and the connecting hopper 401 to dry the material during the crushing process and the material that has just entered the connecting hopper 401, so as to achieve comprehensive drying of the material.

[0041] The first air intake filter 302 and the second air intake filter 303 are used to block dust during air intake. The first air intake filter 302 is used to blow airflow through the air outlet channel 307 into the interior of the spray gun pipe 402, and also through the air outlet filter 306 into the interior of the crushing box 201 and the connecting bucket 401.

[0042] The first and second air intake filters 303 filter and block dust when air enters the mounting housing 301, ensuring that the incoming air is clean. After the air entering through the first air intake filter 302 is blown by the fan 305, part of the hot air enters the spray gun pipe 402 through the air outlet channel 307 to dry the material conveyed in the spray gun pipe 402 to reduce humidity and prevent sticking. The other part of the hot air enters the crushing housing 201 and the connecting hopper 401 through the air outlet filter 306 to dry the material during crushing and when it enters the connecting hopper 401 from the crushing housing 201, so that the material has low humidity before subsequent conveying, further reducing the possibility of blockage.

[0043] Example 2 Based on the above embodiments, this embodiment also makes the following improvements, such as... Figure 1 and Figure 3 As shown, the striking structure 50 includes a connecting seat 501, a striking hammer 502 is provided on the top of the connecting seat 501, a striking head 503 is provided at the output end of the striking hammer 502, the striking head 503 is connected to the spray gun pipe 402, a connecting pipe 505 is provided on the back side wall of the striking hammer 502, and an air compressor 504 is provided at the connection of the connecting pipe 505.

[0044] After the air compressor 504 starts, it supplies compressed air to the hammer 502 through the connecting pipe 505. The compressed air pushes the internal structure of the hammer 502, causing the output end of the hammer 502 to drive the striking head 503 to move. The striking head 503 contacts and strikes the spray gun pipe 402, using vibration to shake off the material adhering to the inner wall of the spray gun pipe 402, avoiding long-term material adhesion and accumulation that could cause conveying blockage, and ensuring that the spray gun pipe 402 is unobstructed.

[0045] It should be noted that the electrical equipment and components mentioned above are all programmed and controlled using existing PLC controllers. Since these are mature technologies, they will not be described in detail here.

[0046] Workflow Feeding and crushing stage: After the biomass fuel enters the crushing chamber 201 of the crushing mechanism 20, the first servo motor 205 drives one of the connecting shafts 203 to rotate. Through the transmission of two meshing gears 204, the two connecting shafts 203 and the corresponding crushing rollers 202 rotate in opposite directions. The two crushing rollers 202 crush large pieces (or clumps) of biomass fuel into small particles suitable for subsequent transportation through squeezing and shearing action, thus eliminating the hidden dangers of fuel agglomeration and clumping from the source.

[0047] Drying process: Outside air enters the mounting housing 301 of the drying mechanism 30 through the first air intake filter 302 and the second air intake filter 303 (filtering dust); the heating rod 304 inside the housing heats the air into hot air, and the fan 305 blows the hot air into the spray gun pipe 402 through the air outlet channel 307, and into the crushing housing 201 and the connecting hopper 401 through the air outlet filter 306. The hot air thoroughly dries the crushed material (during the crushing process), the material that has just entered the connecting hopper 401 (before conveying), and the material in the spray gun pipe 402 (during conveying), reducing the humidity of the fuel and avoiding adhesion and blockage caused by high humidity.

[0048] Screw conveyor system: The crushed and dried material falls into the spray gun tube 402 through the connecting hopper 401; the second servo motor 404 drives the conveying auger 403 inside the spray gun tube 402 to rotate. With the help of the spiral structure of the conveying auger 403, the material is evenly spirally pushed along the length of the spray gun tube 402 and finally stably transported to the combustion chamber connected to the spray gun tube 402, ensuring that the fuel is continuously and evenly supplied to the combustion area.

[0049] Tapping to prevent adhesion: During the conveying process, the air compressor 504 provides compressed air to the hammer 502 through the connecting pipe 505, which drives the hammer 502 to drive the hammer head 503 to continuously strike the spray gun pipe 402. The vibration shakes off any materials that may be attached to the inner wall of the spray gun pipe 402 (especially fibrous materials and materials that are easy to generate dust after drying), preventing the accumulation of material layer from causing conveying blockage and keeping the inner wall of the spray gun pipe 402 unobstructed.

[0050] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0051] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0052] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A clog-resistant biomass spray gun, characterized in that, Includes a fixed frame (10), inside which is provided a crushing mechanism (20), at the bottom of the crushing mechanism (20) is provided a conveying structure (40), at the crushing mechanism (20) and the conveying structure (40) are provided a drying mechanism (30), and on one side of the conveying structure (40) is provided a striking structure (50). The crushing mechanism (20) is used for feeding and crushing the incoming material. The drying mechanism (30) is used for drying the crushed material. The conveying structure (40) is used to send the crushed material into the combustion zone. The striking structure (50) is used to strike the conveying structure (40) to prevent adhesion.

2. The anti-clogging biomass spray gun according to claim 1, characterized in that, The crushing mechanism (20) includes a crushing box (201), inside which are two crushing rollers (202), and inside each of the two crushing rollers (202) are a connecting shaft (203). On each of the two connecting shafts (203) and located outside the crushing box (201), there are gears (204). At the input end of one of the connecting shafts (203) is a first servo motor (205), and at the bottom of the first servo motor (205) is a fixed seat (206).

3. The anti-clogging biomass spray gun according to claim 2, characterized in that, The crushing box (201) is fixed to the fixed frame (10), and the bottom of the fixed seat (206) is fixed to the fixed frame (10). The first servo motor (205) is used to drive one of the connecting shafts (203) to rotate, thereby driving the gear (204) to rotate. Since the two gears (204) mesh with each other, they drive the two crushing rollers (202) to rotate in opposite directions.

4. The anti-clogging biomass spray gun according to claim 3, characterized in that, The conveying structure (40) includes a connecting bucket (401), the bottom of which is provided with a spray gun pipe (402), and the inside of the spray gun pipe (402) is provided with a conveying auger (403). The input end of the conveying auger (403) is provided with a second servo motor (404).

5. The anti-clogging biomass spray gun according to claim 4, characterized in that, One end of the spray gun tube (402) is connected to the combustion chamber. The second servo motor (404) is used to drive the conveying auger (403) to rotate, thereby conveying the material spirally to the combustion chamber evenly. The top of the connecting bucket (401) is connected to the crushing box (201) and is used to receive the material.

6. The anti-clogging biomass spray gun according to claim 5, characterized in that, The drying mechanism (30) includes a mounting box (301), a first air inlet filter (302) is provided on the top of the mounting box (301), a second air inlet filter (303) is provided on the outer side wall of the mounting box (301), a plurality of heating rods (304) are provided inside the mounting box (301), a plurality of fans (305) are provided above the plurality of heating rods (304), an air outlet filter (306) is provided on the inner side wall of the mounting box (301), and an air outlet channel (307) is also provided at the bottom of the mounting box (301).

7. The anti-clogging biomass spray gun according to claim 6, characterized in that, The first air intake filter (302) and the second air intake filter (303) are used to block dust during air intake. The first air intake filter (302) is used to blow airflow through the air outlet channel (307) into the interior of the spray gun pipe (402), and also through the air outlet filter (306) into the interior of the crushing box (201) and the connecting bucket (401).

8. The anti-clogging biomass spray gun according to claim 7, characterized in that, The striking structure (50) includes a connecting seat (501), a striking hammer (502) is provided on the top of the connecting seat (501), a striking head (503) is provided at the output end of the striking hammer (502), the striking head (503) is connected to the spray gun pipe (402), a connecting pipe (505) is provided on the back side wall of the striking hammer (502), and an air compressor (504) is provided at the connection of the connecting pipe (505).

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