Biomass granulator

Abstract

The utility model relates to the technical field of granulation machines, in particular to a biomass granulation machine which comprises a granulation pipe with an extrusion head arranged at one end, an extrusion forming device is rotatably connected in an inner cavity of the granulation pipe, and a feed hopper is arranged on the upper surface of one end, far away from the extrusion head, of the granulation pipe. The biomass particle drying device overcomes the defects in the prior art, through the cooperative arrangement of the air drying box, the metal net, the air pipe, the electric heating pipe and other structures, after biomass particles extruded by the extrusion head fall on the metal net, a third motor can be started to drive fan blades to rotate, and hot air heated by the electric heating pipe is conveyed into an inner cavity of the air drying box; hot air passes through the metal net and then acts on the surfaces of the biomass particles to air-dry an adhesive on the surfaces of the biomass particles, so that the biomass particles are prevented from being adhered to one another, and the situation that the biomass particles are directly discharged into external collecting equipment after being granulated and formed by an existing device is avoided as much as possible; and the biomass particles are easily adhered and agglomerated due to the adhesive on the surfaces, so that the biomass particles are inconvenient to use by a user.

Description

Technical Field

[0001] The utility model relates to the technical field of granulators, in particular to a biomass granulator. Background Art

[0002] Biomass pellets are cold-formed and compacted by rollers and ring dies at room temperature using crushed biomass straw, forestry waste and other raw materials. The density of the raw materials is generally 0.1-0.13t per cubic meter, and the density of the formed pellets is 1.1-1.3t per cubic meter, which is convenient for storage and transportation, and greatly improves the combustion performance of biomass.

[0003] After searching, the utility model patent with announcement number CN207413347U proposed]

[0004] A biomass fuel particle manufacturing device comprises a box body; an annular feed plate is welded on the top plate of the box body; a rolling roller and a driven roller are arranged below the annular feed plate; an insertion shaft is arranged at the center of the circular surfaces at both ends of the rolling roller and the driven roller; a mounting plate is arranged below the rolling roller; a mounting frame is welded on the left half of the mounting plate; a first motor is installed on the mounting frame; the first motor is connected to a large pulley through an output shaft; a wide belt is sleeved on the large pulley; a slide seat is installed on the lower surface of the right half of the mounting plate; a tool is inserted in the slide seat; a limit plate is arranged on the right side of the tool; and a A small pulley; a small belt is sleeved on the small pulley; the small pulley sleeved on the left end of the small belt is connected to the second motor through the output shaft; an air compressor is provided on the left side of the second motor; an air pipe is installed at the bottom end of the air compressor; a second hydraulic cylinder is provided below the small pulley; a second push rod is inserted in the second hydraulic cylinder; a baffle is connected to the right end of the second push rod; a pelletizing mold is provided above the baffle; a pressing block is provided above the pelletizing mold; a first push rod is connected to the upper surface of the pressing block; a first hydraulic cylinder is sleeved on the first push rod; a plurality of legs are welded to the lower surface of the bottom plate of the box; the legs are welded between each other.

[0005] In order to make the crushed biomass material better bonded when manufacturing biomass pellets, it is generally necessary to adjust the adhesive. The above-mentioned device directly discharges the biomass pellets into an external collection device after pelletization. The biomass pellets are easily adhered to each other due to the adhesive on the surface, which is inconvenient for users to use. Utility Model Content

[0006] The utility model aims to solve or at least alleviate the problem that the existing device directly discharges the biomass particles into an external collection device after granulation, and the biomass particles are easily adhered to each other due to the adhesive on the surface, which is inconvenient for users to use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biomass pellet machine, comprising a granulation tube with an extrusion head installed at one end, an extrusion molding device is rotatably connected in the inner cavity of the granulation tube, a feed hopper is installed on the upper surface of the end of the granulation tube away from the extrusion head, a crushing assembly is installed in the inner cavity of the feed hopper, a drying assembly for preventing particles from sticking is provided below the extrusion head, the drying assembly comprises an air drying box fixedly connected to the lower surface of the granulation tube, a metal mesh is obliquely installed in the inner cavity of the air drying box, an air duct with an arc-shaped structure at one end is fixedly connected to the inner side wall of the air drying box below the metal mesh, an air supply structure is embedded in the inner cavity of the horizontal section of the air duct, and an electric heating pipe is fixedly connected to the inner cavity of the arc section of the air duct.

[0008] Optionally, the extrusion molding device is an auger embedded in the inner cavity of the granulation tube and rotatably connected to the granulation tube, and one end of the granulation tube away from the extrusion head is fixedly connected to a first motor for driving the auger to rotate.

[0009] Optionally, the top wall on one side of the feed hopper extends horizontally toward the inner cavity of the feed hopper to form a support plate, and the crushing assembly includes a second motor fixedly mounted on the support plate, an output end of the second motor passes through the support plate and extends into the inner cavity of the feed hopper, and a crushing knife group is fixedly connected to the output end of the second motor.

[0010] Optionally, a filter screen is embedded in the inner cavity of the feed hopper below the crushing knife group, and the filter screen is fixedly connected to the inner wall of the feed hopper on the circumference, and a gap is left between the upper surface of the filter screen and the bottom of the crushing knife group.

[0011] Optionally, a discharge port is provided on a side wall of the air drying box away from the extrusion head, and the lower end of the metal mesh is fixedly connected to the bottom wall of the inner cavity of the discharge port.

[0012] Optionally, the air supply structure includes a third motor fixedly connected to the inner cavity of the horizontal section of the air duct, an air duct is left between the peripheral side of the third motor and the inner wall of the air duct, and a fan blade is fixedly connected to the output end of the third motor.

[0013] Optionally, a dust filter is provided in the inner cavity of the connection between the air duct and the air drying box, and the peripheral side of the dust filter is fixedly connected to the inner wall of the air duct.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) Through the coordinated arrangement of structures such as the air drying box, the metal mesh, the air duct and the electric heating tube, when the biomass particles extruded by the extruder head fall on the metal mesh, the third motor can be started to drive the fan blades to rotate and transport the hot air heated by the electric heating tube into the inner cavity of the air drying box. After passing through the metal mesh, the hot air acts on the surface of the biomass particles to air dry the adhesive on the surface of the biomass particles, thereby preventing the biomass particles from sticking to each other. This avoids the problem that the existing device directly discharges the biomass particles into an external collection device after granulation, and the biomass particles are easily stuck to each other due to the adhesive on the surface, which is inconvenient for users to use;

[0016] (2) A dust filter is embedded in the inner cavity of the air inlet end of the air duct and is fixedly connected to the inner wall of the air duct. The dust filter can effectively filter the air entering the inner cavity of the air duct to prevent the floating dust in the air from entering the air drying box with the flowing air and adhering to the outer surface of the biomass particle material, thereby polluting the outer surface of the biomass particles and affecting the quality of the biomass particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the feed hopper of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the third motor and the air duct of the utility model.

[0020] In the figure: 1. granulation tube; 2. extruder head; 3. auger; 4. first motor; 5. feed hopper; 6. support plate; 7. second motor; 8. crushing knife group; 9. filter screen; 10. air drying box; 11. discharge port; 12. metal mesh; 13. air duct; 14. third motor; 15. fan blades; 16. electric heating tube; 17. dust filter. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3A biomass pellet machine comprises a pelletizing tube 1 with an extrusion head 2 installed at one end, an extrusion molding device is rotatably connected in the inner cavity of the pelletizing tube 1, and a feed hopper 5 is installed on the upper surface of the end of the pelletizing tube 1 away from the extrusion head 2. When in use, the biomass material is introduced into the inner cavity of the pelletizing tube 1 through the feed hopper 5, and a proper amount of adhesive is added, and then the extrusion molding device is started, and the biomass material is squeezed out from the extrusion head 2 through the extrusion molding device to form granular biomass pellets.

[0023] A crushing assembly is installed in the inner cavity of the feed hopper 5. When the large-sized biomass material is introduced into the inner cavity of the feed hopper 5, the crushing assembly can be started to crush the large-sized biomass material, which is convenient for subsequent extrusion granulation of the biomass material.

[0024] A drying component for preventing particles from sticking is provided below the extrusion head 2. The drying component includes an air drying box 10 fixedly connected to the lower surface of the granulation tube 1. A metal mesh 12 is obliquely installed in the inner cavity of the air drying box 10. The metal mesh 12 is provided to receive the biomass particles extruded by the extrusion head 2. The metal mesh 12 is tilted so that the biomass particles falling on the metal mesh 12 can slide down the metal mesh 12 and be discharged under the action of their own gravity.

[0025] An air duct 13 with an arc-shaped end is fixedly connected to the inner wall of the air drying box 10 below the metal mesh 12, an air supply structure is embedded in the inner cavity of the horizontal section of the air duct 13, and an electric heating pipe 16 is fixedly connected to the inner cavity of the arc section of the air duct 13. When the biomass particles fall on the metal mesh 12, the air supply structure is started to transport air into the air drying box 10 through the air duct 13, and the electric heating pipe 16 is connected to an external power supply to heat the air passing through the air duct 13. After the heated hot air enters the air drying box 10, the adhesive on the surface of the biomass particles on the metal mesh 12 is air-dried to prevent the biomass particles from sticking to each other due to the action of the surface adhesive.

[0026] For details, please refer to Figure 1 The extrusion molding device is an auger 3 embedded in the inner cavity of the granulation tube 1 and rotatably connected to the granulation tube 1. The end of the granulation tube 1 away from the extrusion head 2 is fixedly connected to a first motor 4 for driving the auger 3 to rotate. When the biomass material enters the inner cavity of the granulation tube 1, the first motor 4 can be started to drive the auger 3 to rotate, and the biomass material is transported toward the extrusion head 2, and finally extruded through the extrusion head 2 to form biomass particles.

[0027] For details, please refer to Figure 2The top wall of one side of the feed hopper 5 extends horizontally toward the inner cavity of the feed hopper 5 to form a support plate 6. The crushing assembly includes a second motor 7 fixedly mounted on the support plate 6. The output end of the second motor 7 passes through the support plate 6 and extends into the inner cavity of the feed hopper 5. A crushing knife group 8 is fixedly connected to the output end of the second motor 7. The support plate 6 is provided to support and fix the second motor 7. The crushing knife group 8 is fixedly connected to the output end of the second motor 7, so that after the user starts the second motor 7, the crushing knife group 8 can be driven to rotate at a high speed to crush the biomass material introduced into the feed hopper 5.

[0028] For details, please refer to Figure 1 A filter screen 9 is embedded in the inner cavity of the feed hopper 5 below the crushing knife group 8, and a gap is left between the upper surface of the filter screen 9 and the bottom of the crushing knife group 8. The filter screen 9 is used to filter the crushed biomass material, so that the biomass material falling into the granulation tube 1 is more uniform. A gap is left between the upper surface of the filter screen 9 and the bottom of the crushing knife group 8, which can avoid the friction between the crushing knife group 8 and the filter screen 9 when rotating, which may easily cause the problem of damage to the filter screen 9.

[0029] For details, please refer to Figure 1 A discharge port 11 is provided on the side wall of the air drying box 10 away from the extruder head 2, and a lower end of the metal mesh 12 is fixedly connected to the bottom wall of the inner cavity of the discharge port 11. When the biomass particles fall on the metal mesh 12, due to the effect of gravity, the biomass particles can slide down along the metal mesh 12 until they are discharged from the discharge port 11 provided on the side wall of the air drying box 10.

[0030] For details, please refer to Figure 3 The air supply structure includes a third motor 14 fixedly connected to the inner cavity of the horizontal section of the air duct 13, an air duct is left between the peripheral side of the third motor 14 and the inner wall of the air duct 13, and a fan blade 15 is fixedly connected to the output end of the third motor 14. When in use, the third motor 14 is started, and the fan blade 15 is driven by the third motor 14 to rotate at a high speed to transport air into the air duct 13. The flowing air enters the inner cavity of the air drying box 10 after being heated by the electric heating tube 16, and the adhesive on the outer surface of the biomass particles is dried by air, thereby achieving the purpose of preventing the biomass particles from sticking to each other.

[0031] Specifically, refer to Figure 3 A dust filter 17 is provided in the inner cavity of the connection between the air duct 13 and the air drying box 10, and the circumference of the dust filter 17 is fixedly connected to the inner wall of the air duct 13. The dust filter 17 is used to filter the air entering the air duct 13, and try to prevent the floating dust in the air from entering the air drying box 10, adhering to the outer surface of the biomass particles, causing pollution to the biomass particles, and affecting the quality of the biomass particles.

[0032] Working principle: When in use, the user first introduces the biomass material into the feed hopper 5, and then starts the second motor 7 to drive the crushing knife group 8 to rotate at high speed to crush the biomass material. The crushed biomass material passes through the filter screen 9 and enters the granulation tube 1. At this time, the user starts the first motor 4, and drives the auger 3 to rotate through the first motor 4 to transport the biomass material to the extruder head 2, and finally extrude it through the extruder head 2. When the biomass particles are extruded and contact the inner wall of the air drying box 10, the stress generated by the subsequent extrusion breaks to form biomass particles, and falls on the metal mesh 12, and the air duct 13 under the metal mesh 12 can continuously transport hot air heated by the electric heating tube 16 into the air drying box 10 to air-dry the adhesive on the surface of the biomass particles to prevent the biomass particles from sticking to each other, and try to avoid the problem that the existing device directly discharges the biomass particles into the external collection device after granulation, and the biomass particles are easily adhered to each other due to the adhesive on the surface, which is inconvenient for users to use.

[0033] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A biomass pellet machine, comprising a pelletizing tube (1) with an extrusion head (2) mounted on one end, an extrusion molding device rotatably connected in the inner cavity of the pelletizing tube (1), a feed hopper (5) mounted on the upper surface of one end of the pelletizing tube (1) away from the extrusion head (2), a crushing assembly mounted in the inner cavity of the feed hopper (5), a drying assembly for preventing particles from sticking is arranged below the extrusion head (2), characterized in that: The drying component comprises an air drying box (10) fixedly connected to the lower surface of the granulation tube (1), a metal mesh (12) being obliquely installed in the inner cavity of the air drying box (10), an air duct (13) having an arc-shaped structure at one end being fixedly connected to the inner wall of the air drying box (10) below the metal mesh (12), an air supply structure being embedded in the inner cavity of the horizontal section of the air duct (13), and an electric heating tube (16) being fixedly connected in the inner cavity of the arc-shaped section of the air duct (13).

2. A biomass pellet machine according to claim 1, characterized in that: The extrusion molding device is an auger (3) embedded in the inner cavity of the granulation tube (1) and rotatably connected to the granulation tube (1); one end of the granulation tube (1) away from the extrusion head (2) is fixedly connected to a first motor (4) for driving the auger (3) to rotate.

3. A biomass pellet machine according to claim 1, characterized in that: The top wall of one side of the feed hopper (5) extends horizontally toward the inner cavity of the feed hopper (5) to form a support plate (6); the crushing assembly comprises a second motor (7) fixedly mounted on the support plate (6); an output end of the second motor (7) passes through the support plate (6) and extends into the inner cavity of the feed hopper (5); a crushing knife group (8) is fixedly connected to the output end of the second motor (7).

4. A biomass pellet machine according to claim 3, characterized in that: A filter screen (9) is embedded in the inner cavity of the feed hopper (5) below the crushing knife group (8), and its circumferential side is fixedly connected to the inner wall of the feed hopper (5), and a gap is left between the upper surface of the filter screen (9) and the bottom of the crushing knife group (8).

5. The biomass pellet machine according to claim 1, characterized in that: A discharge port (11) is provided on a side wall of the air drying box (10) away from the extrusion head (2), and a lower end of the metal mesh (12) is fixedly connected to the bottom wall of the inner cavity of the discharge port (11).

6. The biomass pellet machine according to claim 1, characterized in that: The air supply structure comprises a third motor (14) fixedly connected to the inner cavity of the horizontal section of the air duct (13), an air duct is provided between the peripheral side of the third motor (14) and the inner wall of the air duct (13), and a fan blade (15) is fixedly connected to the output end of the third motor (14).

7. A biomass pellet machine according to claim 6, characterized in that: A dust filter (17) is provided in the inner cavity of the connection between the air duct (13) and the air drying box (10), and the peripheral side of the dust filter (17) is fixedly connected to the inner wall of the air duct (13).

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