Anti-coking biomass fuel grate

Abstract

The utility model relates to the technical field of biomass fuel grate, disclose a kind of anti-coking biomass fuel grate, including support frame, the support frame inside is provided with grate body, the support frame side wall is fixedly connected with limit ring, the limit ring inside rotation is connected with transmission shaft, the transmission shaft outer wall is fixedly connected with steel wire roller, the steel wire roller outer wall and the grate body surface contact, the support frame side wall is fixedly connected with motor, the motor output end is fixedly connected with hollow screw column, the transmission shaft sliding connection is in the hollow screw column inside, the hollow screw column outer wall is equipped with limit groove. In the utility model, when needing to replace steel wire roller, rotate threaded sleeve to make it separate from hollow screw column, transmission shaft can be extracted to complete replacement, so as to reach the effect that anti-coking component is conveniently cleaned and replaced, solve the problem that traditional grate anti-coking component replacement is complicated, improve the maintenance convenience of equipment.

Description

Technical Field

[0001] This utility model relates to the field of biomass fuel grate technology, and in particular to an anti-coking biomass fuel grate. Background Technology

[0002] Biomass fuel, as a renewable energy source, is widely used in industrial boilers and residential heating. However, during combustion, biomass fuel is prone to coking on the grate surface due to high temperatures and ash melting, which seriously affects combustion efficiency and equipment lifespan. Traditional grate structures often use fixed anti-coking components to address the coking problem, but these are difficult to clean and maintain. After long-term operation, the accumulation of coke can reduce heat transfer performance. In addition, the diversity of biomass fuels, such as straw and sawdust, further exacerbates the complexity of the coking problem. Therefore, developing an anti-coking biomass fuel grate is of great significance for improving combustion stability and reducing maintenance costs.

[0003] Existing biomass grate anti-coking technologies mainly rely on two methods: mechanical scraping or airflow flushing. Mechanical scraping grates typically use fixed scrapers or chain drive structures to remove coke from the grate surface by periodically moving the scrapers. Airflow flushing, on the other hand, uses high-pressure air or steam injection to decompose the coke layer.

[0004] Existing anti-coking components in grate furnaces generally suffer from cumbersome replacement issues. For example, scrapers or chains in mechanical scraping structures are usually rigidly connected to the drive shaft, requiring the disassembly of numerous fasteners or even complete shutdown during replacement. This is not only time-consuming and labor-intensive but also affects the continuity of the combustion process. Furthermore, coking components are prone to wear due to long-term friction, and traditional designs do not consider modular quick-disassembly functionality, leading to extended maintenance cycles and increased labor costs. This problem directly reduces the availability of the equipment, especially in scenarios requiring frequent cleaning or component replacement, severely hindering the promotion efficiency of biomass combustion technology. Therefore, an anti-coking biomass fuel grate is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an anti-coking biomass fuel grate, which aims to improve the problem that coking components are prone to long-term friction and wear in the existing technology, while the traditional design does not consider modular quick-disassembly function, resulting in extended maintenance cycle and increased labor costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A biomass fuel grate for preventing coking includes a support frame, a grate body disposed inside the support frame, a limit ring fixedly connected to the side wall of the support frame, a drive shaft rotatably connected inside the limit ring, a wire roller fixedly connected to the outer wall of the drive shaft, the outer wall of the wire roller contacting the surface of the grate body, a motor fixedly connected to the side wall of the support frame, a hollow threaded column fixedly connected to the output end of the motor, the drive shaft slidably connected inside the hollow threaded column, a limit groove formed on the outer wall of the hollow threaded column, and a connecting component disposed on the outer wall of the drive shaft; The connecting assembly includes a threaded sleeve and a locking rod. The threaded sleeve is slidably connected to the outer wall of the drive shaft, and the bottom of the locking rod is fixedly connected to the outer wall of the drive shaft. The inner wall of the threaded sleeve is threadedly connected to the outer wall of the hollow threaded column, and the locking rod is slidably connected inside the limiting groove. A dust removal assembly is provided inside the support frame.

[0007] As a further description of the above technical solution: The dust removal assembly includes a scraper, which is slidably connected inside the support frame. An electric telescopic rod is provided on the side wall of the support frame, and the side wall of the scraper is fixedly connected to the output end of the electric telescopic rod.

[0008] As a further description of the above technical solution: The support frame has a dust removal port inside, and a connecting frame is fixedly connected to the bottom of the support frame.

[0009] As a further description of the above technical solution: A collection frame is slidably connected inside the connecting frame, and a pull rod is fixedly connected to the outer wall of the collection frame.

[0010] As a further description of the above technical solution: A fixed frame is fixedly connected to the bottom of the connecting frame, and a sliding column is slidably connected inside the fixed frame.

[0011] As a further description of the above technical solution: A locking post is fixedly connected to the top of the sliding post, and the locking post engages with the collection frame.

[0012] As a further description of the above technical solution: The bottom of the sliding column is rotatably connected to a handle, and the outer wall of the handle is slidably connected to the bottom of the fixed frame.

[0013] As a further description of the above technical solution: A spring is fitted on the outer wall of the sliding column. One end of the spring is fixedly connected to the bottom of the locking column, and the other end of the spring is fixedly connected to the inside of the fixing frame.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the hollow threaded column is driven to rotate by a motor, and the transmission shaft is driven to rotate by the sliding of the clamp rod in the limiting groove. This, in turn, drives the wire roller to rotate and rub against the surface of the grate body, which can effectively prevent coking. When the wire roller needs to be replaced, the threaded sleeve is rotated to disengage it from the hollow threaded column, and the transmission shaft can be pulled out to complete the replacement. This achieves the effect of convenient cleaning and replacement of anti-coking components, solves the problem of cumbersome replacement of anti-coking components in traditional grates, and improves the convenience of equipment maintenance.

[0015] 2. In this utility model, the electric telescopic rod drives the scraper to slide within the support frame, pushing the debris into the collection frame through the dust removal port. When cleaning the collection frame, rotating the handle drives the sliding column to move downward, causing the locking column to disengage from the collection frame and unlock it. This makes debris cleaning and collection frame loading and unloading more convenient, thereby achieving the effect of efficiently cleaning grate debris, solving the problem of grate debris accumulation affecting combustion and easy coking, and improving the operational stability of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an anti-coking biomass fuel grate proposed in this utility model; Figure 2 This is an exploded structural diagram of the drive shaft of an anti-coking biomass fuel grate proposed in this utility model. Figure 3 This is a schematic diagram of the scraper structure of an anti-coking biomass fuel grate proposed in this utility model; Figure 4 This is a schematic diagram of the collection frame structure of an anti-coking biomass fuel grate proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0017] Legend: 1. Support frame; 2. Grate body; 3. Motor; 4. Limiting ring; 5. Drive shaft; 6. Hollow threaded column; 7. Wire roller; 8. Threaded sleeve; 9. Locking rod; 10. Limiting groove; 11. Electric telescopic rod; 12. Scraper; 13. Connecting frame; 14. Dust removal port; 15. Collection frame; 16. Pull rod; 17. Fixing frame; 18. Locking column; 19. Sliding column; 20. Spring; 21. Rotating handle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 - Figure 5 This utility model provides an embodiment of an anti-coking biomass fuel grate, comprising a support frame 1 serving as an overall support and mounting base. Inside the support frame 1 is a core component, the grate body 2, for bearing biomass fuel and performing combustion. A limiting ring 4, providing rotational support and restricting the axial movement of a drive shaft 5, is fixedly connected to the side wall of the support frame 1. A drive shaft 5, for transmitting power, is rotatably connected inside the limiting ring 4. A wire roller 7, which directly contacts the surface of the grate body 2 and effectively scrapes away and prevents the formation of a coking layer through rotational friction, is fixedly connected to the outer wall of the drive shaft 5. The outer wall of the wire roller 7 contacts the surface of the grate body 2 to achieve its anti-coking function. A motor 3, providing driving force, is fixedly connected to the side wall of the support frame 1. A hollow threaded column 6, serving as a power output and connection hub, is fixedly connected to the output end of the motor 3. The drive shaft 5 is slidably connected inside the hollow threaded column 6 to achieve an axially separable connection between the two. A limiting groove 10 for transmitting torque is provided on the outer wall of the hollow threaded column 6. A key connecting component for convenient assembly and disassembly is provided on the outer wall of the drive shaft 5. The connecting assembly includes a threaded sleeve 8 for locking or releasing the drive shaft 5 and a locking rod 9 for transmitting torque. The threaded sleeve 8 is slidably connected to the outer wall of the drive shaft 5 and can move axially thereto. The bottom of the locking rod 9 is fixedly connected to the outer wall of the drive shaft 5 so that it moves with the drive shaft 5. The inner wall of the threaded sleeve 8 is threadedly connected to the outer wall of the hollow threaded column 6 so as to achieve tightening or loosening. The locking rod 9 is slidably connected inside the limiting groove 10 so that when the threaded sleeve 8 is locked, the torque of the motor 3 can be reliably transmitted to the drive shaft 5 to drive the wire roller 7 to rotate. The support frame 1 is equipped with a dust removal assembly responsible for cleaning the ash and debris generated by combustion.

[0020] Reference Figure 1 - Figure 5The dust removal assembly includes a scraper 12 for scraping debris from the surface of the grate body 2. The scraper 12 is slidably connected inside the support frame 1 and can reciprocate along its track. An electric telescopic rod 11 is provided on the side wall of the support frame 1 to provide driving force for the scraper 12. The side wall of the scraper 12 is fixedly connected to the output end of the electric telescopic rod 11 to directly receive its pushing and pulling force. A dust removal port 14 for discharging debris is opened inside the support frame 1. A connecting frame 13 for receiving and guiding debris is fixedly connected to the bottom of the support frame 1. A collection frame 15 for collecting debris is slidably connected inside the connecting frame 13. A pull rod 16 for easy pulling and placing by the operator is fixedly connected to the outer wall of the collection frame 15. The bottom of the connecting frame 13 is fixedly connected to... A fixed frame 17 with a locking mechanism is provided. A sliding column 19 that can move up and down is slidably connected inside the fixed frame 17. A locking column 18 for locking the collection frame 15 is fixedly connected to the top of the sliding column 19. The locking column 18 engages with a pre-set locking groove at the bottom of the collection frame 15 to lock or release. A rotating handle 21 for the operator to apply force to rotate is rotatably connected to the bottom of the sliding column 19. The outer wall of the rotating handle 21 is slidably connected to a guide groove opened at the bottom of the fixed frame 17. A spring 20 providing a reset elastic force is sleeved on the outer wall of the sliding column 19. The upper end of the spring 20 is fixedly connected to the bottom of the locking column 18, and the lower end of the spring 20 is fixedly connected inside the fixed frame 17 to maintain the locking state of the locking column 18 in the normal state.

[0021] Working principle: After the motor 3 starts, it drives the hollow threaded column 6 to rotate. Since the clamping rod 9 is slidably connected inside the limiting groove 10 and fixed to the outer wall of the transmission shaft 5, the rotation of the hollow threaded column 6 drives the transmission shaft 5 to rotate inside the limiting ring 4 through the clamping rod 9. The rotation of the transmission shaft 5 then drives the wire roller 7 fixed on its outer wall to rotate. During the rotation of the wire roller 7, it continuously contacts and rubs against the surface of the grate body 2, which can promptly remove the coking material on the surface of the grate body 2. When the wire roller 7 needs to be replaced, the threaded sleeve 8 is rotated to make it slide along the outer wall of the transmission shaft 5 and disengage from the outer wall of the hollow threaded column 6. At this time, the transmission shaft 5 loses the limiting position of the threaded sleeve 8 and can be pulled out from inside the hollow threaded column 6, thus completing the replacement of the wire roller 7. At the same time, the dust removal components inside the support frame 1 work synchronously. After the telescopic rod 11 is activated, it drives the scraper 12 to slide inside the support frame 1. During the sliding process, the scraper 12 pushes the debris accumulated below the grate body 2 toward the dust removal port 14. The debris falls into the collection frame 15 inside the connecting frame 13 through the dust removal port 14. When the collection frame 15 needs to be cleaned, the rotating handle 21 is turned to drive the sliding column 19 to slide downward inside the fixed frame 17. The downward movement of the sliding column 19 causes the locking column 18 to disengage from the collection frame 15. At this time, the spring 20 is compressed, and the collection frame 15 can be pulled out from the connecting frame 13 through the pull rod 16. After cleaning, the collection frame 15 is put back into the connecting frame 13, the rotating handle 21 is released, the spring 20 returns to its original position, pushes the sliding column 19 upward, and causes the locking column 18 to re-engage with the collection frame 15 to achieve fixation.

Claims

1. A biomass fuel grate for preventing coking, comprising a support frame (1), characterized in that: The support frame (1) is provided with a grate body (2) inside. A limiting ring (4) is fixedly connected to the side wall of the support frame (1). A drive shaft (5) is rotatably connected inside the limiting ring (4). A wire roller (7) is fixedly connected to the outer wall of the drive shaft (5). The outer wall of the wire roller (7) is in contact with the surface of the grate body (2). A motor (3) is fixedly connected to the side wall of the support frame (1). A hollow threaded column (6) is fixedly connected to the output end of the motor (3). The drive shaft (5) is slidably connected inside the hollow threaded column (6). A limiting groove (10) is opened on the outer wall of the hollow threaded column (6). A connecting component is provided on the outer wall of the drive shaft (5). The connecting assembly includes a threaded sleeve (8) and a locking rod (9). The threaded sleeve (8) is slidably connected to the outer wall of the transmission shaft (5). The bottom of the locking rod (9) is fixedly connected to the outer wall of the transmission shaft (5). The inner wall of the threaded sleeve (8) is threadedly connected to the outer wall of the hollow threaded column (6). The locking rod (9) is slidably connected inside the limiting groove (10). A dust removal assembly is provided inside the support frame (1).

2. The anti-coking biomass fuel grate according to claim 1, characterized in that: The dust removal assembly includes a scraper (12), which is slidably connected inside the support frame (1). An electric telescopic rod (11) is provided on the side wall of the support frame (1), and the side wall of the scraper (12) is fixedly connected to the output end of the electric telescopic rod (11).

3. The anti-coking biomass fuel grate according to claim 2, characterized in that: The support frame (1) has a dust removal port (14) inside, and a connecting frame (13) is fixedly connected to the bottom of the support frame (1).

4. The anti-coking biomass fuel grate according to claim 3, characterized in that: The connecting frame (13) is slidably connected to a collection frame (15), and a pull rod (16) is fixedly connected to the outer wall of the collection frame (15).

5. The anti-coking biomass fuel grate according to claim 4, characterized in that: The bottom of the connecting frame (13) is fixedly connected to a fixed frame (17), and a sliding column (19) is slidably connected inside the fixed frame (17).

6. The anti-coking biomass fuel grate according to claim 5, characterized in that: The top of the sliding column (19) is fixedly connected to a locking column (18), which engages with the collection frame (15).

7. The anti-coking biomass fuel grate according to claim 6, characterized in that: The bottom of the sliding column (19) is rotatably connected to a handle (21), and the outer wall of the handle (21) is slidably connected to the bottom of the fixed frame (17).

8. The anti-coking biomass fuel grate according to claim 7, characterized in that: A spring (20) is fitted on the outer wall of the sliding column (19). One end of the spring (20) is fixedly connected to the bottom of the locking column (18), and the other end of the spring (20) is fixedly connected to the inside of the fixing frame (17).

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