Biomass pellet fuel drying and forming device

Abstract

The utility model provides a biomass pellet fuel drying and forming device, which relates to the technical field of drying and forming equipment and comprises a fixed cylinder and a rotary cylinder, the fixed cylinder is rotatably connected with the rotary cylinder, and a drying mechanism for drying biomass fuel is arranged on the outer surfaces of the fixed cylinder and the rotary cylinder. A filtering mechanism used for filtering biomass fuel is arranged at the end, away from the fixed cylinder, of the rotary cylinder, and a forming mechanism used for extrusion forming of the biomass fuel is arranged below the filtering mechanism. According to the biomass pellet fuel drying and forming device, hot air can be continuously blown into the rotary drum through the arranged drying mechanism, then materials can be lifted and scattered by the baffle through rotation of the rotary drum, biomass pellet fuel is fully dried, and the situation that the biomass pellet fuel is not easy to form or loose in forming during compression forming is avoided; and through the arranged filtering mechanism, impurities in the dried biomass fuel can be filtered out, and the combustion effect of the biomass fuel is improved.

Description

Technical Field

[0001] This utility model relates to a drying and forming device, specifically a biomass pellet fuel drying and forming device, belonging to the field of biomass fuel technology. Background Technology

[0002] Biomass fuel refers to fuel made by burning biomass materials, primarily agricultural and forestry waste (such as straw, sawdust, bagasse, and rice husks). It differs significantly from fossil fuels. According to national policies and environmental standards, direct combustion of biomass is classified as a high-pollution fuel, permitted only for use in rural stoves and not in urban areas. The actual application of biomass fuel mainly involves biomass briquettes, which are made from agricultural and forestry waste as raw materials. These briquettes are processed through crushing, mixing, extrusion, and drying to create various shapes (such as blocks and pellets) that can be directly burned – a new type of clean fuel.

[0003] Current biomass fuel drying and molding equipment is inconvenient to fully dry biomass pellets during use, which makes it difficult for the biomass pellets to be formed or to form loosely during compression molding, affecting the production quality of biomass fuel. In addition, existing biomass fuel drying and molding equipment is inconvenient to filter out impurities in biomass fuel, making it difficult to guarantee the combustion effect of biomass pellets. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This invention proposes a biomass pellet fuel drying and forming device to solve the problems in the prior art where biomass pellet fuel contains moisture, which easily leads to incomplete compression or loose forming, affecting the production quality of biomass fuel. In addition, the presence of impurities in biomass fuel makes it difficult to guarantee the combustion effect of biomass fuel.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: a biomass pellet fuel drying and forming device.

[0008] It includes a fixed cylinder and a rotating cylinder, which are rotatably connected. The outer surfaces of the fixed cylinder and the rotating cylinder are provided with a drying mechanism for drying biomass fuel. Support plate one and support plate two are respectively provided below the fixed cylinder and the rotating cylinder. A filtration mechanism for filtering biomass fuel is provided at the end of the rotating cylinder away from the fixed cylinder. Below the filtration mechanism is a forming mechanism for extruding biomass fuel into shape.

[0009] The drying mechanism includes a first motor and a second motor. A fan is fixed to the output end of the first motor. An air heater is installed inside the fixed cylinder. A gear is fixed to the output end of the second motor. A gear ring is fixed to the outer surface of the rotating cylinder. The outer surface of the gear meshes with the outer surface of the gear ring. Multiple baffles arranged in a circular pattern are fixed inside the rotating cylinder. The drying mechanism can use the fan to blow air heated by the air heater into the rotating cylinder. At the same time, the gear and gear ring can rotate the rotating cylinder, so that the baffles in the rotating cylinder can pick up and scatter the material, increasing the contact area between the biomass fuel and the hot air. This can fully dry the biomass pellet fuel in the rotating cylinder, avoiding the situation where the biomass pellet fuel is not easy to form or is loosely formed during compression molding, thus improving the production quality of biomass fuel.

[0010] The filtration mechanism includes a motor and a filter bucket. An eccentric block is fixed to the output end of the motor. A filter plate is slidably connected inside the filter bucket. The outer surface of the eccentric block is always in contact with the filter plate. Two symmetrical springs are fixed to the inner wall of the filter bucket on the side of the filter plate away from the eccentric block. The filtration mechanism can filter out impurities in the dried biomass fuel and improve the combustion efficiency of the biomass fuel.

[0011] The forming mechanism includes cylinder one, cylinder two, and an extrusion barrel. The outer surface of the extrusion barrel is provided with a plurality of circumferentially arranged die holes. A pressure plate is fixed to the output end of cylinder one. The outer surface of the pressure plate is slidably connected to the inner wall of the extrusion barrel. A cutting ring is slidably connected to the outer surface of the extrusion barrel. The output end of cylinder two is fixed to the upper surface of the cutting ring.

[0012] The outer surface of the aforementioned rotating drum is fixed with a protruding strip, and the upper surface of the second support plate is provided with two symmetrical rotating wheels, the outer surface of the protruding strip being in contact with the rotating wheels.

[0013] Preferably, a support plate three is provided below the rotating drum, the outer surface of the second motor is fixed to the outer surface of the support plate three, and the outer surface of the first motor is fixed to the outer surface of the fixed cylinder.

[0014] The outer surface of the filter bucket is fixed to the outer surface of the second support plate, and the outer surface of the third motor is fixed to the outer surface of the filter bucket.

[0015] Preferably, a support cylinder is fixed to the bottom surface of the filter bucket, a sliding groove is provided on the outer surface of the support cylinder, a rotating rod is rotatably connected inside the support cylinder, the outer surface of the rotating rod is slidably connected to the sliding groove, and the end of the rotating rod away from the support cylinder is fixed to the outer surface of the cylinder.

[0016] Preferably, the extrusion barrel is fixed to the support plate 2 by a fixing plate, and the outer surface of the cylinder 2 is fixed to the fixing plate.

[0017] A material collection box is provided below the above-mentioned forming mechanism, and a protective cover is fixed on the upper surface of the filter hopper.

[0018] This utility model provides a biomass pellet fuel drying and forming device, which has the following beneficial effects:

[0019] 1. This biomass pellet fuel drying and forming device, through its drying mechanism, uses a fan to blow air heated by an air heater into a rotating drum. At the same time, a motor is started to drive the gear ring and the rotating drum to rotate. This allows the baffles in the rotating drum to pick up and scatter the material, increasing the contact area between the biomass fuel and the hot air. This ensures that the biomass pellet fuel in the rotating drum is fully dried, avoiding the problem of biomass pellet fuel being difficult to form or forming loosely during compression, thus improving the production quality of biomass fuel.

[0020] 2. This biomass pellet fuel drying and forming device, through the combination of a filter mechanism, namely a motor, filter hopper, eccentric block and filter plate, can filter out impurities in the dried biomass fuel and improve the combustion efficiency of the biomass fuel. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the front view of this utility model;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the right view of this utility model;

[0023] Figure 3 This is an exploded view of the fixing cylinder of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the rotating cylinder of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the filtration mechanism and the forming mechanism of this utility model.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Fixed cylinder; 101. Feed inlet;

[0028] 2. Rotating drum;

[0029] 3. Drying mechanism; 301. Motor 1; 302. Fan; 303. Air heater; 304. Motor 2; 305. Gear; 306. Gear ring; 307. Baffle; 308. Raised bar; 309. Rotary wheel; 310. Support plate 3;

[0030] 4. Support plate one; 5. Support plate two;

[0031] 6. Filtration mechanism; 601. Motor 3; 602. Filter hopper; 603. Eccentric block; 604. Filter plate; 605. Spring;

[0032] 7. Forming mechanism; 701. Cylinder 1; 702. Cylinder 2; 703. Extrusion barrel; 704. Die; 705. Pressure plate; 706. Cutting ring; 707. Support cylinder; 708. Slide groove; 709. Rotating rod;

[0033] 8. Collection bin; 9. Protective cover. Detailed Implementation

[0034] This utility model provides a biomass pellet fuel drying and forming device.

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The device includes a fixed cylinder 1 and a rotating cylinder 2, which are rotatably connected. The outer surfaces of the fixed cylinder 1 and the rotating cylinder 2 are provided with a drying mechanism 3 for drying biomass fuel. A support plate 4 is fixed below the fixed cylinder 1, and a support plate 5 is provided below the rotating cylinder 2. A filter mechanism 6 for filtering biomass fuel is provided at the end of the rotating cylinder 2 away from the fixed cylinder 1. A forming mechanism 7 for extruding biomass fuel is provided below the filter mechanism 6. The height of the support plate 5 is lower than the height of the support plate 4. Therefore, the fixed cylinder 1 and the rotating cylinder 2 are designed to be inclined, which allows the biomass fuel in the rotating cylinder 2 to be discharged smoothly under the action of gravity.

[0036] Please refer to this carefully. Figure 1 , Figure 3 and Figure 4The drying mechanism 3 includes a motor 301 and a motor 304. A fan 302 is fixed to the output end of the motor 301. An air heater 303 is installed inside the fixed cylinder 1. A gear 305 is fixed to the output end of the motor 304. A gear ring 306 is fixed to the outer surface of the rotating cylinder 2. The outer surface of the gear 305 meshes with the outer surface of the gear ring 306. Multiple baffles 307 arranged in a circle are fixed inside the rotating cylinder 2. An air inlet is opened on the side of the fixed cylinder 1 away from the rotating cylinder 2. Starting the first motor 301 in the drying mechanism 3 enables the fan 302 to blow the air heated by the air heater 303 into the rotating drum 2. At the same time, starting the second motor 304 enables the gear 305 to drive the gear ring 306 and the rotating drum 2 to rotate. At this time, the baffle 307 in the rotating drum 2 can pick up the biomass fuel and let it fall, increasing the contact area between the biomass fuel and the hot air, thereby fully drying the biomass pellet fuel in the rotating drum 2. This avoids the biomass pellet fuel being difficult to form or forming loosely during compression molding, thus improving the production quality of biomass fuel. The air heater 303 can convert electrical energy into heat energy to heat the surrounding air. The air heater 303 is equipped with a controller to accurately control the heating temperature. The air heater 303 is existing technology and will not be described in detail here.

[0037] The outer surface of the rotating drum 2 is fixed with a protrusion 308, and the upper surface of the support plate 2 5 is provided with two symmetrical rotating wheels 309. The outer surface of the protrusion 308 is in contact with the rotating wheels 309.

[0038] A support plate 310 is provided below the rotating drum 2. The outer surface of the motor 2 304 is fixed to the outer surface of the support plate 310, and the outer surface of the motor 1 301 is fixed to the outer surface of the fixed cylinder 1.

[0039] Please refer to this carefully. Figure 5 The filtration mechanism 6 includes a motor 601 and a filter hopper 602. An eccentric block 603 is fixed to the output end of the motor 601. A filter plate 604 is slidably connected inside the filter hopper 602. The outer surface of the eccentric block 603 is always in contact with the filter plate 604. Two symmetrical springs 605 are fixed to the inner wall of the filter hopper 602 on the side of the filter plate 604 away from the eccentric block 603. When the motor 601 in the filtration mechanism 6 is started, the eccentric block 603 can drive the filter plate 604 to shake under the action of the springs 605, thereby filtering out impurities in the biomass fuel and improving the combustion effect of the biomass fuel.

[0040] The outer surface of the filter hopper 602 is fixed to the outer surface of the support plate 2 5, and the outer surface of the motor 3 601 is fixed to the outer surface of the filter hopper 602.

[0041] Please refer to this carefully. Figure 5The forming mechanism 7 includes a first cylinder 701, a second cylinder 702, and an extrusion barrel 703. The outer surface of the extrusion barrel 703 has multiple circumferentially arranged perforated dies 704. A pressure plate 705 is fixed to the output end of the first cylinder 701, and the outer surface of the pressure plate 705 is slidably connected to the inner wall of the extrusion barrel 703. A cutting ring 706 is slidably connected to the outer surface of the extrusion barrel 703, and the output end of the second cylinder 702 is fixed to the upper surface of the cutting ring 706. Activating the first cylinder 701 causes the pressure plate 705 to extrude the biomass fuel in the extrusion barrel 703, allowing the extruded biomass fuel to be formed and extruded through the perforated dies 704. Activating the second cylinder 702 causes the cutting ring 706 to slide up and down on the outer surface of the extrusion barrel 703, thereby cutting the extruded biomass fuel. The operation is convenient.

[0042] A support cylinder 707 is fixed to the bottom surface of the filter hopper 602. A groove 708 is formed on the outer surface of the support cylinder 707. A rotating rod 709 is rotatably connected inside the support cylinder 707. The outer surface of the rotating rod 709 is slidably connected to the groove 708. One end of the rotating rod 709 away from the support cylinder 707 is fixed to the outer surface of the cylinder 701. Rotating the rotating rod 709 can rotate the cylinder 701 and the pressure plate 705 to be directly above the extrusion barrel 703.

[0043] The extrusion barrel 703 is fixed to the support plate 2 5 by a fixing plate, and the outer surface of the cylinder 2 702 is fixed to the fixing plate.

[0044] A collection box 8 is provided below the forming mechanism 7, and a protective cover 9 is fixed to the upper surface of the filter hopper 602. The protective cover 9 can prevent biomass fuel from splashing when it is discharged from the rotating drum 2.

[0045] Working principle: First, biomass fuel is fed into the rotating drum 2 through the feed inlet 101. Then, the motor 301 in the drying mechanism 3 is started, causing the fan 302 to blow air heated by the air heater 303 into the rotating drum 2. Simultaneously, the motor 304 is started, causing the gear 305 to drive the gear ring 306 and the rotating drum 2 to rotate. At this time, the baffle 307 in the rotating drum 2 can lift and drop the biomass fuel, increasing the contact area between the biomass fuel and the hot air, thus fully drying the biomass pellet fuel in the rotating drum 2. This prevents the biomass pellet fuel from being difficult to form or forming loosely during compression molding, improving the production quality of the biomass fuel. The dried biomass fuel is discharged from the rotating drum 2 onto the filter hopper 602. The electric motor in the filtration mechanism 6 is then started. Machine 601, under the action of spring 605, can cause the eccentric block 603 to drive the filter plate 604 to shake, thereby filtering out impurities in the biomass fuel and improving the combustion effect of the biomass fuel. The filtered biomass fuel falls into the extrusion barrel 703 under the action of gravity. Then, the rotating rod 709 is rotated to rotate cylinder 701 and pressure plate 705 to be directly above the extrusion barrel 703. Activating cylinder 701 can cause pressure plate 705 to extrude the biomass fuel in the extrusion barrel 703. The extruded biomass fuel can be formed and extruded through the die 704. At this time, activating cylinder 702 can cause the cutting ring 706 to slide up and down on the outer surface of the extrusion barrel 703, thereby cutting the extruded biomass fuel. The operation is convenient.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biomass pellet fuel drying and forming device, comprising a fixed cylinder (1) and a rotating cylinder (2), characterized in that: The fixed cylinder (1) and the rotating cylinder (2) are rotatably connected. The outer surfaces of the fixed cylinder (1) and the rotating cylinder (2) are provided with a drying mechanism (3) for drying biomass fuel. The bottom of the fixed cylinder (1) and the rotating cylinder (2) are respectively provided with a support plate one (4) and a support plate two (5). The end of the rotating cylinder (2) away from the fixed cylinder (1) is provided with a filter mechanism (6) for filtering biomass fuel. The bottom of the filter mechanism (6) is provided with a forming mechanism (7) for extruding biomass fuel. The drying mechanism (3) includes a motor (301) and a motor (304). A fan (302) is fixed at the output end of the motor (301). An air heater (303) is installed inside the fixed cylinder (1). A gear (305) is fixed at the output end of the motor (304). A gear ring (306) is fixed on the outer surface of the rotating cylinder (2). The outer surface of the gear (305) meshes with the outer surface of the gear ring (306). A plurality of baffles (307) arranged in a circle are fixed inside the rotating cylinder (2). The filtration mechanism (6) includes a motor (601) and a filter bucket (602). An eccentric block (603) is fixed at the output end of the motor (601). A filter plate (604) is slidably connected inside the filter bucket (602). The outer surface of the eccentric block (603) is always in contact with the filter plate (604). Two symmetrical springs (605) are fixed to the inner wall of the filter bucket (602) on the side of the filter plate (604) away from the eccentric block (603). The forming mechanism (7) includes cylinder one (701), cylinder two (702) and extrusion barrel (703). The outer surface of the extrusion barrel (703) is provided with a plurality of circumferentially arranged die holes (704). The output end of cylinder one (701) is fixed with a pressure plate (705). The outer surface of the pressure plate (705) is slidably connected to the inner wall of the extrusion barrel (703). The outer surface of the extrusion barrel (703) is slidably connected with a cutting ring (706). The output end of cylinder two (702) is fixed to the upper surface of the cutting ring (706).

2. The biomass pellet fuel drying and forming device according to claim 1, characterized in that: The outer surface of the rotating drum (2) is fixed with a protrusion (308), and the upper surface of the support plate (5) is provided with two symmetrical rotating wheels (309), and the outer surface of the protrusion (308) is in contact with the rotating wheels (309).

3. The biomass pellet fuel drying and forming device according to claim 1, characterized in that: A support plate three (310) is provided below the rotating drum (2). The outer surface of the motor two (304) is fixed to the outer surface of the support plate three (310), and the outer surface of the motor one (301) is fixed to the outer surface of the fixed cylinder (1).

4. The biomass pellet fuel drying and forming device according to claim 1, characterized in that: The outer surface of the filter bucket (602) is fixed to the outer surface of the support plate (5), and the outer surface of the motor (601) is fixed to the outer surface of the filter bucket (602).

5. The biomass pellet fuel drying and forming device according to claim 1, characterized in that: The bottom surface of the filter hopper (602) is fixed with a support cylinder (707). The outer surface of the support cylinder (707) is provided with a sliding groove (708). The inside of the support cylinder (707) is rotatably connected with a rotating rod (709). The outer surface of the rotating rod (709) is slidably connected with the sliding groove (708). One end of the rotating rod (709) away from the support cylinder (707) is fixed to the outer surface of the cylinder (701).

6. The biomass pellet fuel drying and forming device according to claim 1, characterized in that: The extrusion barrel (703) is fixed to the support plate (5) by a fixing plate, and the outer surface of the cylinder (702) is fixed to the fixing plate.

7. The biomass pellet fuel drying and forming device according to claim 1, characterized in that: A material collection box (8) is provided below the forming mechanism (7), and a protective cover (9) is fixed on the upper surface of the filter hopper (602).

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