Biomass boiler with combustion-supporting mechanism

Abstract

The biomass boiler with the combustion-supporting mechanism comprises a boiler body, a hot water bin and a combustion bin are installed in the boiler body, a material guiding mechanism is arranged in the combustion bin, a plug-in mechanism is arranged on the left side of the combustion bin, and a material guiding roller with the diameter gradually reduced from left to right is arranged in the combustion bin. A plurality of groups of discharge grooves are distributed in the circumferential direction of the guide roller; a driving motor is arranged on the outer side of the boiler body and is in transmission connection with a connecting frame in the material guiding roller through a driving shaft penetrating through the combustion bin. A first supporting frame and a second supporting frame are arranged at the right end and the middle of the material guiding roller correspondingly, and four first rolling wheels are arranged on the first supporting frame in a surrounding mode and are in rolling fit with a first limiting ring on the inner wall of the combustion bin. Through the innovative design of a mechanical structure, the material guiding mechanism and the opposite inserting mechanism jointly solve the technical problems that biomass fuel is insufficient in combustion and uneven in distribution, and meanwhile the maintainability of the boiler is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of biomass boilers, specifically a biomass boiler with a combustion-supporting mechanism. Background Technology

[0002] A biomass boiler is an environmentally friendly boiler that uses agricultural and forestry waste (such as straw, wood chips, firewood, etc.) or biomass briquettes as energy. It converts biomass energy into heat energy through combustion to provide heating, steam, or hot water for industrial or residential applications. Its core is to use renewable resources to replace fossil fuels and reduce greenhouse gas emissions through a carbon-neutral cycle. It features low-carbon, clean, and sustainable utilization.

[0003] During the operation of biomass boilers, fuel tends to form a dense accumulation layer due to its physical properties and mechanical layout limitations. The lower layer of fuel suffers from insufficient pyrolysis of volatiles and delayed combustion of fixed carbon due to obstructed oxygen diffusion. At the same time, uneven fuel distribution in the combustion zone leads to the coexistence of localized high-temperature coking and low-temperature flameout. The existing feeding device is not adaptable enough, resulting in an imbalance in the longitudinal distribution of the grate. The emission of unburned carbon particles exacerbates energy waste and environmental risks. Furthermore, the viscous substances generated by the pyrolysis of accumulated fuel melt with ash to form a low-porosity sintered layer, further deteriorating the oxygen diffusion channels. Based on this, this utility model designs a biomass boiler with a combustion-supporting mechanism to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a biomass boiler with a combustion-supporting mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A biomass boiler with a combustion-supporting mechanism includes a boiler body. A hot water chamber and a combustion chamber are installed inside the boiler body. A material guiding mechanism is installed inside the combustion chamber, and an insertion mechanism is located on the left side of the combustion chamber. A material guiding roller with a gradually decreasing diameter from left to right is installed inside the combustion chamber, and multiple sets of discharge troughs are distributed circumferentially on the material guiding roller. A drive motor is located on the outside of the boiler body, and it is connected to a connecting frame inside the material guiding roller via a drive shaft passing through the combustion chamber. A first support frame and a second support frame are respectively located at the right end and middle of the material guiding roller. Four first rollers are arranged around the first support frame and roll in cooperation with a first limiting ring on the inner wall of the combustion chamber. Four second rollers are arranged around the second support frame and roll in cooperation with a second limiting ring on the inner wall of the combustion chamber.

[0007] Optionally, the bottom of the drive motor is connected to a transmission wheel via a bearing bracket, and the transmission wheel and the limiting slide rail provided on the outer wall of the boiler body form a sliding pair.

[0008] Optionally, a limiting block is fixedly connected to the right side of the drive motor, and a fixing plate is fixedly connected to the outer wall of the boiler body. The fixing plate is connected to a horizontally movable docking block via a telescopic rod.

[0009] Optionally, a connecting plate extends from the left side of the fixing plate, and the connecting plate has a threaded hole in the middle that is threaded to the screw body, and the end of the screw body abuts against the insertion block.

[0010] Optionally, the axial spacing of the discharge grooves on the surface of the guide roller gradually increases along the material conveying direction.

[0011] Optionally, the first roller is slidably connected to the first limiting ring, and the second roller is slidably connected to the second limiting ring.

[0012] Optionally, the drive shaft and the connecting frame are connected by a keyed detachable connection.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a material guiding mechanism is provided. The conical material guiding roller, together with the gradient discharge trough, realizes the uniform three-dimensional spatial distribution of fuel, effectively breaking the dense layer formed by fuel accumulation in traditional boilers, and greatly improving the pyrolysis efficiency of volatiles. The composite support system composed of four sets of rollers and limiting rings can withstand high temperature deformation, ensuring that it still maintains rotational stability under high temperature conditions.

[0015] 2. In this utility model, a mating mechanism is provided, which adopts a unique inclined mating structure to make the mating block and the limiting block form a pressing and locking effect, and maintain a stable connection under vibration conditions; the combined transmission mechanism of the screw body and the telescopic rod achieves precise positioning, which shortens the operation time of opening and closing the maintenance channel. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from a planar front view;

[0018] Figure 3 This is a three-dimensional top view of the structure of this utility model;

[0019] Figure 4 This is a top view of the structure of this utility model;

[0020] Figure 5 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ;

[0021] Figure 6 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 ;

[0022] Figure 7 This is a three-dimensional left-side view structural schematic diagram of the present invention;

[0023] Figure 8 This utility model Figure 5 A magnified three-dimensional structural diagram of point A in the middle;

[0024] Figure 9 This utility model Figure 5 A magnified three-dimensional structural diagram of point B in the middle.

[0025] In the diagram: 1. Boiler body; 2. Hot water chamber; 3. Combustion chamber; 4. Material guiding mechanism; 401. Material guiding roller; 402. Discharge chute; 403. First support frame; 404. First roller; 405. First limiting ring; 406. Second support frame; 407. Second roller; 408. Second limiting ring; 5. Interlocking mechanism; 501. Drive motor; 502. Bearing frame; 503. Transmission wheel; 504. Limiting slide rail; 505. Limiting block; 506. Fixing plate; 507. Connecting plate; 508. Screw body; 509. Telescopic rod; 510. Interlocking block; 511. Drive shaft; 512. Connecting frame. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., 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, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0028] 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.

[0029] Please see Figures 1-9 In this embodiment of the present invention, a biomass boiler with a combustion-supporting mechanism includes a boiler body 1. A hot water chamber 2 and a combustion chamber 3 are installed inside the boiler body 1. A material guiding mechanism 4 is provided inside the combustion chamber 3. An insertion mechanism 5 is provided on the left side of the combustion chamber 3. A material guiding roller 401 with a diameter gradually decreasing from left to right is provided inside the combustion chamber 3. Multiple sets of discharge troughs 402 are distributed circumferentially on the material guiding roller 401. A drive motor 501 is provided on the outside of the boiler body 1. It is connected to the connecting frame 512 inside the material guiding roller 401 through a drive shaft 511 that passes through the combustion chamber 3. A first support frame 403 and a second support frame 406 are respectively provided at the right end and the middle part of the material guiding roller 401. Four first rollers 404 are arranged around the first support frame 403 and roll in cooperation with a first limiting ring 405 on the inner wall of the combustion chamber 3. Four second rollers 407 are arranged around the second support frame 406 and roll in cooperation with a second limiting ring 408 on the inner wall of the combustion chamber 3.

[0030] The guide roller 401 is made of 316L stainless steel and has a tapered structure. The diameter of the guide roller 401 gradually expands to the left at the right end, and an array of discharge troughs 402 are arranged axially. A connecting frame 512 is welded inside the roller and connected to the drive shaft 511 via a flat key. The first support frame 403 and the second support frame 406 are welded to the right end and the middle of the roller, respectively, and each is equipped with four graphite-lubricated first rollers 404 and second rollers 407, forming a sliding pair with the heat-resistant steel first limiting ring 405 and second limiting ring 408 on the inner wall of the combustion chamber 3.

[0031] The bottom of the drive motor 501 is connected to the transmission wheel 503 via a bearing bracket 502. A limiting block 505 is fixedly connected to the right side of the drive motor 501. A fixing plate 506 is fixedly connected to the outer wall of the boiler body 1. The fixing plate 506 is connected to a laterally movable docking block 510 via a telescopic rod 509. The output shaft of the drive motor 501 is connected to the drive shaft 511. The transmission wheel 503 slides along the limiting slide rail 504, allowing for quick installation and removal of the drive motor 501. The beveled meshing angle design between the limiting block 505 and the docking block 510 ensures the installation stability of the drive motor 501. The fixing plate 506 is welded to the outer wall of the boiler body 1. A screw rod 508 is installed on the connecting plate 507, with its end pressing against the docking block 510.

[0032] The working principle of this utility model is as follows: This biomass boiler achieves efficient combustion through the coordinated action of the feeding mechanism 4 and the insertion mechanism 5. After the fuel enters the combustion chamber 3, it is gradually dispersed by the rotating motion of the feeding roller 401, which has a gradually expanding diameter from right to left. The discharge grooves 402 distributed on the surface of the feeding roller 401 are designed according to the axial spacing gradient, so that the fuel forms a layered dispersion during the movement. The drive motor 501 drives the feeding roller 401 to rotate through the drive shaft 511 and the connecting frame 512. The sliding pair formed by the first roller 404 and the first limiting ring 405, and the second roller 407 and the second limiting ring 408 ensures the stable operation of the roller. The insertion mechanism 5 adjusts the pressing state of the docking block 510 and the limiting block 505 through the screw body 508. The transmission wheel 503 moves along the limiting slide rail 504 to realize the overall displacement of the drive motor 501, so that the left end of the combustion chamber 3 can be fully opened for maintenance.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biomass boiler with a combustion-supporting mechanism, comprising a boiler body (1), wherein a hot water chamber (2) and a combustion chamber (3) are installed inside the boiler body (1), characterized in that: The combustion chamber (3) is provided with a material guiding mechanism (4) inside, and a mating mechanism (5) is provided on the left side of the combustion chamber (3). The combustion chamber (3) is provided with a material guiding roller (401) whose diameter gradually decreases from left to right. The material guiding roller (401) is circumferentially distributed with multiple sets of discharge troughs (402). The boiler body (1) is provided with a drive motor (501) on the outside, which is connected to the connecting frame (512) inside the material guiding roller (401) through the drive shaft (511) that passes through the combustion chamber (3). The right end and the middle part of the material guiding roller (401) are respectively provided with a first support frame (403) and a second support frame (406). Four first rollers (404) are arranged around the first support frame (403) and roll in cooperation with the first limiting ring (405) on the inner wall of the combustion chamber (3). Four second rollers (407) are arranged around the second support frame (406) and roll in cooperation with the second limiting ring (408) on the inner wall of the combustion chamber (3).

2. A biomass boiler with a combustion-supporting mechanism according to claim 1, characterized in that: The bottom of the drive motor (501) is connected to the transmission wheel (503) via the bearing bracket (502). The transmission wheel (503) and the limiting slide rail (504) provided on the outer wall of the boiler body (1) form a sliding pair.

3. A biomass boiler with a combustion-supporting mechanism according to claim 1, characterized in that: The drive motor (501) is fixed to the right side of the limiting block (505), and the boiler body (1) is fixed to the outer wall of the fixing plate (506). The fixing plate (506) is connected to the horizontally movable docking block (510) through the telescopic rod (509).

4. A biomass boiler with a combustion-supporting mechanism according to claim 3, characterized in that: A connecting plate (507) extends from the left side of the fixing plate (506). The connecting plate (507) has a threaded hole in the middle that is threaded to the screw body (508). The end of the screw body (508) abuts against the mating plug (510).

5. A biomass boiler with a combustion-supporting mechanism according to claim 1, characterized in that: The axial spacing of the discharge grooves (402) on the surface of the guide roller (401) gradually increases along the material conveying direction.

6. A biomass boiler with a combustion-supporting mechanism according to claim 1, characterized in that: The first roller (404) is slidably connected to the first limiting ring (405), and the second roller (407) is slidably connected to the second limiting ring (408).

7. A biomass boiler with a combustion-supporting mechanism according to claim 1, characterized in that: The drive shaft (511) and the connecting frame (512) are connected by a key-type detachable connection.

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