A biomass pellet fuel furnace

Abstract

The utility model relates to the technical field of fuel furnace, especially a kind of biomass pellet fuel furnace, including cabinet, the top of cabinet is equipped with feeding hopper, biomass pellet fuel is input from feeding hopper and falls between two crushing rollers and is crushed, oval block will periodically extrude distribution plate in rotating process, make distribution plate slide on four guide rods and stretch reset spring, when oval block does not extrude distribution plate, distribution plate restores original position under the elastic force of reset spring, biomass pellet fuel falling on distribution plate is scattered, distribution plate makes fuel falling on it from the gap between the both ends of distribution plate and the inside of cabinet to fall below in reciprocating process, more smoothly enter combustion furnace body through the feeding hopper of inclination, the fuel in the combustion furnace body is stirred by stirring paddle, so that fuel can be more evenly contacted with oxygen sprayed from nozzle, further improve the combustion efficiency of fuel, and the practicability is better.

Description

Technical Field

[0001] This utility model relates to the technical field of fuel furnaces, and in particular to a biomass pellet fuel furnace. Background Technology

[0002] Biomass fuel refers to the combustion of biomass materials as fuel, generally mainly agricultural and forestry waste such as straw, sawdust, sugarcane bagasse, and rice husks. It is mainly different from fossil fuels. Due to the diversity of geographical environments, plants in different regions have their own special environmental adaptability, which provides a broad prospect for the supply of biomass fuel.

[0003] A biomass pellet fuel-enhancing furnace, publication number CN213746695U, is disclosed on the Chinese Patent Network. It includes a furnace body, a feeding hopper, and an igniter. A feeding pipe is located in the upper part of the furnace body, with a first motor inside one end and a screw rod on one side of the first motor. The feeding hopper is located above the feeding pipe, and its bottom is connected to the feeding pipe. A discharge port is located on the bottom surface of the feeding pipe. A ventilation pipe is horizontally located inside the furnace body and below the feeding pipe, with a fixed shaft at one end. A second motor is located on the outer wall of the furnace body, with one end of the fixed shaft connected to the second motor. The ventilation pipe has a cavity inside. A fan is located on one side of the outer wall of the furnace body. Ventilation holes and a stirring rod are located on the outer wall of the ventilation pipe. A pressure control pipe is located at the top of the furnace body, with a movable ball inside. A pressure relief pipe connected to the outside is located on the inner wall of the pressure control pipe. Compared with existing technologies, this invention can evenly feed biomass pellets into the furnace body, ensure complete combustion of biomass pellets, automatically adjust the pressure inside the furnace body, and is safe to use.

[0004] The following problems exist in this scheme: Biomass pellets are put into the feeding hopper and enter the conveying pipe through the bottom of the feeding hopper and then into the combustion furnace. However, when the biomass pellets are on the outside, they may clump together. When they are transported into the combustion furnace for combustion, they are not sufficiently broken up, which will affect the combustion quality. Therefore, the scheme has low practicality and certain drawbacks.

[0005] Therefore, in order to solve the above problems, this utility model provides a biomass pellet fuel stove. Utility Model Content

[0006] The purpose of this invention is to provide a biomass pellet fuel stove to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a biomass pellet fuel stove, comprising a housing, a feeding hopper installed on the top of the housing, two crushing rollers installed between the inner two side walls of the housing, baffles symmetrically installed on the inner two side walls of the housing, return springs symmetrically installed at the top two ends of the baffles, a guide rod installed on the top of the baffles and inside the return springs, a material distribution plate installed on the outer ring surface of the guide rod and above the return springs, a combustion furnace body installed at the bottom of the housing, and an igniter installed on the outer side of the combustion furnace body.

[0008] Preferably, a transmission gear is installed after the shaft of one end of the crushing roller passes through the outside of the housing. A fixed frame is installed on the outside of the housing and above the transmission gear. A second drive motor is installed on the inner wall of the fixed frame, and the output shaft of the second drive motor is connected to one of the transmission gears.

[0009] Preferably, a third drive motor is installed on the outside of the housing and below the transmission gear. The output shaft of the third drive motor passes through the inside of the housing and is fitted with a rotating rod. Elliptical blocks are installed at both ends of the rotating rod and below the material distribution plate.

[0010] Preferably, when the elliptical block rotates, the extrusion distribution plate slides on the four guide rods and stretches the return spring. The wider ends of the distribution plate have gaps with the inner side of the box. The bottom of the box is provided with a feeding hopper that communicates with the combustion furnace body. The inner side of the feeding hopper is inclined.

[0011] Preferably, a blower is installed on the outer side of the combustion furnace body, and the output end of the blower extends to the inner side of the combustion furnace body and is installed with an annular pipe. A number of nozzles are installed at equal intervals at one bottom end of the annular pipe.

[0012] Preferably, a first drive motor is installed on the outer side of the combustion furnace body away from the igniter, and the output shaft of the first drive motor extends into the interior of the combustion furnace body to install an agitator.

[0013] In summary, this utility model has the following beneficial technical effects: This biomass pellet fuel stove involves feeding biomass pellets into a hopper and crushing them between two crushing rollers. During rotation, elliptical blocks periodically press against a distribution plate, causing it to slide on four guide rods and stretch a return spring. When the elliptical blocks stop pressing the distribution plate, it returns to its original position under the elastic force of the return spring, thus achieving the reciprocating motion of the distribution plate. This disperses the biomass pellets falling onto the distribution plate. During this reciprocating motion, the fuel falls through the gaps between the two ends of the distribution plate and the inner side of the casing, flowing smoothly into the combustion furnace body through the inclined feed hopper. An agitator stirs the fuel within the combustion furnace body, ensuring more even contact between the fuel and the oxygen injected from the nozzle, further improving combustion efficiency and contributing to more complete combustion, thus enhancing practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a utility model Figure 1 Internal structural diagram; Figure 3 This is a utility model Figure 2 Partial structural diagram; Figure 4 This is a utility model Figure 3 Partial structural diagram; Figure 5 This is a utility model Figure 2 Schematic diagram of the internal structure of the combustion furnace.

[0015] Explanation of reference numerals in the attached drawings: 1. Box body; 101. Feed hopper; 2. Feeding hopper; 3. Crushing roller; 4. Baffle; 5. Return spring; 6. Guide rod; 7. Distributor plate; 8. Combustion furnace body; 9. Ignition device; 10. First drive motor; 11. Stirring paddle; 12. Transmission gear; 13. Fixing frame; 14. Second drive motor; 15. Third drive motor; 16. Rotating rod; 17. Elliptical block; 18. Fan; 19. Annular pipe; 20. Nozzle. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 - Figure 5 The present invention will be described in further detail below.

[0017] A biomass pellet fuel stove, as described above Figure 1 - Figure 5The system includes a housing 1, a feeding hopper 2 installed on the top of the housing 1, two crushing rollers 3 installed between the two inner side walls of the housing 1, baffles 4 symmetrically installed on the two inner side walls of the housing 1, return springs 5 ​​symmetrically installed at both ends of the top of the baffles 4, a guide rod 6 installed on the top of the baffles 4 and inside the return springs 5, a material distribution plate 7 installed on the outer ring surface of the guide rod 6 and on the top of the return springs 5, and a combustion furnace body 8 installed at the bottom of the housing 1, with an igniter 9 installed on one side of the outside of the combustion furnace body 8.

[0018] Reference Figure 1 - Figure 3 One end of the crushing roller 3 has a shaft that extends through the outside of the housing 1 and is fitted with a transmission gear 12. A fixed frame 13 is installed on the outside of the housing 1 and above the transmission gear 12. A second drive motor 14 is installed on the inner wall of the fixed frame 13. The output shaft of the second drive motor 14 is connected to one of the transmission gears 12. When the second drive motor 14 is started, its output shaft drives the transmission gear 12 connected to it to rotate. Since the shafts at one end of both crushing rollers 3 are fitted with transmission gears 12 and the two transmission gears 12 mesh with each other, the rotation of one transmission gear 12 will drive the other transmission gear 12 to rotate in the opposite direction, thereby causing the two crushing rollers 3 to rotate relative to each other and crush the biomass pellet fuel that is fed from the feeding hopper 2 and falls between the two crushing rollers 3.

[0019] Reference Figure 1 - Figure 4 A third drive motor 15 is installed outside the housing 1 and below the transmission gear 12. The output shaft of the third drive motor 15 passes through the interior of the housing 1 and is fitted with a rotating rod 16. Elliptical blocks 17 are installed at both ends of the rotating rod 16 and below the material distribution plate 7. When the third drive motor 15 is started, its output shaft drives the rotating rod 16 to rotate, and the elliptical blocks 17 on the rotating rod 16 rotate accordingly. During the rotation, the elliptical blocks 17 periodically press the material distribution plate 7, causing the material distribution plate 7 to slide on the four guide rods 6 and stretch the return spring 5. When the elliptical blocks 17 no longer press the material distribution plate 7, the material distribution plate 7 is under the elastic force of the return spring 5. The material distribution plate 7 is reciprocated up and down to break up the biomass pellet fuel that falls onto it. When the elliptical block 17 rotates, it squeezes the material distribution plate 7 to slide on the four guide rods 6 and stretches the return spring 5. The wider ends of the material distribution plate 7 have gaps with the inner side of the box 1. The bottom of the box 1 is provided with a feed hopper 101 that communicates with the combustion furnace body 8. The inner side of the feed hopper 101 is inclined. During the reciprocating up and down movement of the material distribution plate 7, the fuel falling onto it slides down from the gaps between the two ends of the material distribution plate 7 and the inner side of the box 1, and enters the combustion furnace body 8 more smoothly through the inclined feed hopper 101.

[0020] Reference Figure 1 - Figure 5A blower 18 is installed on one side of the combustion furnace body 8. The output end of the blower 18 extends to the inside of the combustion furnace body 8 and is installed in an annular pipe 19. Several nozzles 20 are installed at equal intervals at the bottom end of the annular pipe 19. After the blower 18 is started, it draws in outside air, pressurizes it and delivers it into the annular pipe 19. The air in the annular pipe 19 is evenly sprayed into the combustion furnace body 8 through the several nozzles 20 installed at equal intervals at its bottom, providing sufficient oxygen for the combustion of fuel in the combustion furnace body 8, so that the fuel can burn more completely. A first drive motor 10 is installed on the side of the combustion furnace body 8 away from the igniter 9. The output shaft of the first drive motor 10 extends to the inside of the combustion furnace body 8 and is installed in a stirring paddle 11. When the first drive motor 10 is started, its output shaft drives the stirring paddle 11 to rotate inside the combustion furnace body 8. The stirring paddle 11 stirs the fuel in the combustion furnace body 8, so that the fuel can contact the oxygen injected from the nozzles 20 more evenly, further improving the combustion efficiency of the fuel, and also helping to make the fuel burn more completely.

[0021] The implementation principle of a biomass pellet fuel stove according to this utility model embodiment is as follows: When the device is used, after the second drive motor 14 is started, its output shaft drives the transmission gear 12 connected to it to rotate. Since the two crushing rollers 3 are both equipped with transmission gears 12 on one end of their rotating shafts, and the two transmission gears 12 mesh with each other, the rotation of one transmission gear 12 will drive the other transmission gear 12 to rotate in the opposite direction, thereby causing the two crushing rollers 3 to rotate relative to each other, crushing the biomass pellet fuel that is fed from the feeding hopper 2 and falls between the two crushing rollers 3. The third drive motor 15 is started, and its output shaft drives the rotating rod 16 to rotate. The elliptical block 17 on the rotating rod 16 rotates accordingly. During the rotation, the elliptical block 17 will periodically squeeze the distribution plate 7, causing the distribution plate 7 to slide on the four guide rods 6 and stretch the return spring 5. When the elliptical block 17 stops squeezing the distribution plate 7, the distribution plate 7 returns to its original position under the elastic force of the return spring 5, thereby realizing the up-and-down reciprocating motion of the distribution plate 7, crushing the biomass pellet fuel that falls from the feed hopper 2. The biomass pellet fuel on the distribution plate 7 is dispersed. During the reciprocating motion of the distribution plate 7, the fuel falling on it slides down through the gaps between the two ends of the distribution plate 7 and the inside of the box 1, and enters the combustion furnace body 8 more smoothly through the inclined feed hopper 101. The igniter 9 is used to ignite the fuel entering the combustion furnace body 8. After the blower 18 is started, it draws in outside air, pressurizes it and delivers it to the annular pipe 19. The air in the annular pipe 19 is evenly sprayed into the combustion furnace body 8 through several nozzles 20 installed at equal intervals at its bottom, providing sufficient oxygen for the combustion of fuel in the combustion furnace body 8, so that the fuel can burn more completely. The first drive motor 10 starts its output shaft to drive the stirring paddle 11 to rotate in the combustion furnace body 8. The stirring paddle 11 stirs the fuel in the combustion furnace body 8, so that the fuel can contact the oxygen injected from the nozzles 20 more evenly, further improving the combustion efficiency of the fuel, and also helping to make the fuel burn more completely, thus improving its practicality.

[0022] Finally, the following points should be noted: First, in the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly, and can be mechanical connection or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0023] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A biomass pellet fuel stove, comprising a housing (1), characterized in that: The top of the box (1) is equipped with a feeding hopper (2), and two crushing rollers (3) are installed between the two inner side walls of the box (1). Baffles (4) are symmetrically installed on the two inner side walls of the box (1). Reset springs (5) are symmetrically installed at both ends of the top of the baffles (4). A guide rod (6) is installed on the top of the baffles (4) and inside the reset springs (5). A material distribution plate (7) is installed on the outer ring surface of the guide rods (6) and on the top of the reset springs (5). A combustion furnace body (8) is installed at the bottom of the box (1). An igniter (9) is installed on the outer side of the combustion furnace body (8).

2. The biomass pellet fuel stove according to claim 1, characterized in that: One end of the crushing roller (3) has a shaft that passes through the outside of the housing (1) and is fitted with a transmission gear (12). A fixing frame (13) is installed outside the housing (1) and above the transmission gear (12). A second drive motor (14) is installed on the inner side wall of the fixing frame (13). The output shaft of the second drive motor (14) is connected to one of the transmission gears (12).

3. A biomass pellet fuel stove according to claim 1, characterized in that: A third drive motor (15) is installed outside the housing (1) and below the transmission gear (12). The output shaft of the third drive motor (15) passes through the inside of the housing (1) and a rotating rod (16) is installed thereon. Elliptical blocks (17) are installed at both ends of the rotating rod (16) and below the material distribution plate (7).

4. A biomass pellet fuel stove according to claim 3, characterized in that: When the elliptical block (17) rotates, it squeezes the material distribution plate (7) to slide on the four guide rods (6) and stretches the return spring (5). The wider ends of the material distribution plate (7) are left with gaps between them and the inner side of the box body (1). The bottom of the box body (1) is provided with a feeding hopper (101) that communicates with the combustion furnace body (8). The inner side of the feeding hopper (101) is inclined.

5. A biomass pellet fuel stove according to claim 1, characterized in that: A blower (18) is installed on the outer side of the combustion furnace body (8). The output end of the blower (18) extends to the inner side of the combustion furnace body (8) and is installed with an annular pipe (19). A number of nozzles (20) are installed at equal intervals at one bottom end of the annular pipe (19).

6. A biomass pellet fuel stove according to claim 5, characterized in that: A first drive motor (10) is installed on the side of the combustion furnace body (8) away from the igniter (9), and the output shaft of the first drive motor (10) extends into the interior of the combustion furnace body (8) where an agitator (11) is installed.

Images