Biomass particle granulator and granulation method thereof

Abstract

The invention relates to the field of biomass particles, in particular to a biomass particle granulator and a granulation method.The biomass particle granulator comprises a cylinder with an upper end opening in an open state, a discharging opening is formed in the eccentric position of the lower end face of the cylinder, a disc body is rotationally connected into the cylinder, and a plurality of penetrating type punching holes are evenly formed in the disc body; the end part of the rotating shaft penetrates through the bottom of the cylinder and is connected with a driving motor arranged at the bottom of the cylinder; according to the biomass particle granulator, the designed lifting plate is matched with the multiple base blocks, the multiple base blocks can move up and down synchronously, the multiple feeding ports are arranged, continuous charging and punching in punching holes can be achieved, the punching and discharging processes are synchronously carried out, in other words, the charging link, the punching link and the discharging link are executed in sequence and do not interfere with one another, and the production efficiency is improved. The device has assembly line production efficiency, and ensures the granulation efficiency of biomass particles.

Description

Technical Field

[0001] The invention relates to the field of biomass pellets, in particular to a biomass pellet making machine and a pellet making method thereof. Background Art

[0002] Biomass fuel refers to renewable fuel produced directly or indirectly from biomass such as plants, animals and microorganisms. It is renewable, low-carbon and environmentally friendly, and is one of the important renewable energy sources.

[0003] The most common biomass fuel is biosolid fuel, which is firewood, crop straw, forestry residues, etc. used directly as fuel, or processed into biomass pellet fuel.

[0004] The most common shape of biomass pellet fuel is rod-shaped. The rod-shaped biomass pellet fuel is generally processed by a feeder and a pelletizer. The feeder conveys the raw materials to the pelletizer, and the roller in the pelletizer rolls the raw materials in the ring die. The pressure of the roller squeezes the powdered raw materials from the die hole of the ring die and squeezes them into rod-shaped particles.

[0005] The current pelletizer can only process solid rod-shaped biomass pellet fuel due to its structural design. That is, the inside of the biomass pellet fuel is solid. It is difficult for external air to penetrate into the inside of the biomass pellet fuel during combustion, and the combustion efficiency is low, which fails to meet the needs of users.

[0006] Therefore, in view of the above problems, a biomass pellet making machine and a pellet making method thereof are proposed. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve the technical problem is as follows: the biomass pellet making machine described in the present invention comprises a cylinder with an open upper port, a discharge port is provided at an eccentric position on the lower end surface of the cylinder, a disc body is rotatably connected in the cylinder, a plurality of through-type punching holes are evenly provided on the disc body, a rotating shaft is fixedly connected to the axis position of the disc body, the end of the rotating shaft passes through the bottom of the cylinder and is connected to a driving motor provided at the bottom of the cylinder; A stamping assembly is provided on the outside of the cylinder, and the stamping assembly includes a plurality of brackets arranged on the ground, each bracket is arranged on the periphery of the cylinder, each bracket extends upward to the upper port position of the cylinder, the upper end of each bracket is fixedly connected to a hydraulic cylinder, the output end of each hydraulic cylinder is commonly fixedly connected to a lifting plate, a plurality of feeding ports are evenly arranged on the lifting plate, a plurality of base blocks are evenly arranged on the lower surface of the lifting plate, each base block is arranged between adjacent feeding ports, wherein a plurality of discharge rods are evenly arranged on the lower surface of the base block opposite to the discharge port, a plurality of stamping rods are evenly arranged on the lower surface of each base block staggered from the discharge port, and a diameter of each stamping rod is smaller than the diameter of the stamping hole.

[0009] Preferably, each of the stamping rods includes a connecting part and a stamping part; the connecting part is threadedly connected in the base block, and a cylinder adapted to the threaded connection of the connecting part is provided in the base block; a nut is provided at the junction of the connecting part and the stamping part, a ring-shaped groove is provided on the lower end surface of the nut, a spring is provided in the groove, and a ring body is provided at the lower end of the spring, and both the spring and the ring body are sleeved on the stamping part.

[0010] Preferably, each of the stamping parts is in a truncated cone shape, the diameter of the lower end surface of each stamping part is smaller than the diameter of the upper end surface thereof, and a pointed portion is provided at the lower end of each stamping part.

[0011] Preferably, a feeding assembly is provided in each of the feeding ports, and the feeding assembly comprises a funnel arranged above the lifting plate, and a material guide pipe is fixedly connected to the lower end of the funnel; The outer ring of the upper half of each material guiding tube is fixedly connected with a supporting frame, and the supporting frame is used to fix and stabilize the funnel and the material guiding tube.

[0012] Preferably, a plurality of piston cylinders are evenly arranged on the outer ring of the cylinder, a hollow rod is slidably connected in the piston cylinder, the upper end of the hollow rod is fixed on the lifting plate, and an air pipe is connected to the hollow rod, the end of the air pipe passes through the material guide pipe and extends along the axial direction of the material guide pipe.

[0013] Preferably, a material guide cover is fixedly connected to the lower end of the material guide pipe, a screen is provided at the bottom of the material guide cover, and the exhaust direction of the air pipe points to the upper surface of the screen.

[0014] Preferably, the middle position of the screen is arranged to protrude upwards.

[0015] Preferably, a plurality of air jet holes are provided on the surface of the air pipe in the material guiding pipe, and the exhaust direction of the air jet holes is inclined downward.

[0016] A biomass pellet making method, comprising the above-mentioned biomass pellet making machine, and comprising the following steps: S1: Raw material preparation Collecting raw materials: The raw materials of biomass pellets come from a wide range of sources, mainly including wood chips, straw, waste crops and plant fibers; Pretreatment: The collected raw materials need to be pretreated to remove impurities and adjust the humidity to ensure the smooth progress of subsequent processing; S2: Raw material crushing Crushing: The raw materials are crushed, and the larger biomass raw materials are crushed into particles suitable for granulation through a crusher, with the diameter of the particles controlled at 5-8mm; Screening: Screen the crushed materials, send the materials larger than 8mm into the crusher for secondary crushing, and then send the qualified materials to the next process; S3: Drying Drying: After screening, the raw materials are transported to the drum dryer through an auger conveyor and dried by hot air; Control moisture: reduce the moisture content of raw materials to between 10% and 15%; S4: Granulation Pellet processing: The pretreated raw materials are sent to the biomass pellet machine for processing and pressing into shape.

[0017] Preferably, after granulation and molding, it is necessary to undergo vibration screening, and the qualified and regular biomass particles are packed into boxes, and the unformed ones are put into a crusher for crushing and reuse.

[0018] The present invention is beneficial in that: 1. In the present invention, the biomass pellet making machine is designed with a lifting plate that cooperates with multiple base blocks, which can move the multiple base blocks up and down synchronously, and multiple feeding ports, which can realize continuous loading and punching in the punching hole, and the punching and unloading process is also carried out synchronously, that is, each link of loading, punching and unloading is performed in sequence without interfering with each other, with the efficiency of assembly line production, and ensuring the efficiency of biomass pelletizing.

[0019] 2. In the present invention, the processed biomass particles have combustion-supporting holes, which improve the contact efficiency with air and the combustion efficiency of the biomass particles. The biomass particles of this shape are particularly suitable for the initial ignition of a combustion furnace, and can quickly generate open flames and accelerate the ignition efficiency of the combustion furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a first-view stereoscopic diagram of the biomass pellet making machine of the present invention; Figure 2 A second perspective stereoscopic view of the biomass pellet making machine of the present invention; Figure 3 is a three-dimensional diagram of a cylinder in the present invention; Figure 4 A three-dimensional diagram of the lifting plate in the present invention; Figure 5A three-dimensional diagram of the biomass particles processed and formed in the present invention; Figure 6 is a cross-sectional view of the biomass particles processed and formed in the present invention; Figure 7 It is a top view of the cylinder in the present invention; Figure 8 is a three-dimensional diagram of the base block in the present invention; Fig. 9 A three-dimensional diagram of a punching rod in the present invention; Fig.10 is a three-dimensional diagram of a nut in the present invention; Fig.11 It is a three-dimensional diagram of the feeding rod in the present invention; Fig.12 It is a stereoscopic diagram of the feeding assembly in the present invention; Fig.13 It is a cross-sectional view of the feeding assembly in the present invention; Fig.14 A three-dimensional diagram of the screen in the present invention; Fig.15 The present invention is a flow chart of the biomass pelletizing method.

[0021] In the figure: 101, biomass particles; 102, combustion-supporting hole; 1, cylinder; 2, discharge port; 3, disk; 4, punching hole; 5, rotating shaft; 6, bracket; 7, hydraulic cylinder; 8, lifting plate; 9, feeding port; 10, base block; 11, discharge rod; 12, punching rod; 13, connecting part; 14, punching part; 15, cylinder; 16, nut; 17, groove; 18, spring; 19, ring body; 20, tip; 21, funnel; 22, guide pipe; 23, support frame; 24, piston cylinder; 25, hollow rod; 26, air pipe; 27, guide cover; 28, screen; 29, tubular screw conveyor; 30, push block. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] Reference Figure 1 - Fig.11 A biomass pellet making machine comprises a cylinder 1 with an open upper end, a discharge port 2 is provided at an eccentric position on the lower end surface of the cylinder 1, a disc 3 is rotatably connected in the cylinder 1, a plurality of through-type punching holes 4 are evenly provided on the disc 3, a rotating shaft 5 is fixedly connected to the axis position of the disc 3, an end of the rotating shaft 5 passes through the bottom of the cylinder 1, and is connected to a driving motor provided at the bottom of the cylinder 1; A stamping assembly is provided on the outside of the cylinder 1, and the stamping assembly includes a plurality of brackets 6 arranged on the ground, each bracket 6 is arranged on the periphery of the cylinder 1, and each bracket 6 extends upward to the upper port position of the cylinder 1, and a hydraulic cylinder 7 is fixedly connected to the upper end of each bracket 6, and a lifting plate 8 is commonly fixedly connected to the output end of each hydraulic cylinder 7, and a plurality of feeding ports 9 are evenly arranged on the lifting plate 8, and a plurality of base blocks 10 are evenly arranged on the lower surface of the lifting plate 8, and each base block 10 is arranged between adjacent feeding ports 9, wherein a plurality of discharge rods 11 are evenly arranged on the lower surface of the base block 10 opposite to the discharge port 2, and a plurality of punching rods 12 are evenly arranged on the lower surface of each base block 10 staggered from the discharge port 2, and a diameter of each punching rod 12 is smaller than the diameter of the punching hole 4; In this embodiment, the biomass pellet machine is designed, and the biomass pellets 101 produced and processed are cylindrical in shape as a whole, and one end surface of the biomass pellet machine retains a combustion-supporting hole 102, such as Figure 5 The stereogram is shown as Figure 6 A cross-sectional view thereof is shown; The specific working process of the biomass pellet making machine in this embodiment is that a tubular screw conveyor 29 is arranged at each feeding port 9 to convey the powdered raw materials into the feeding port 9; The driving motor drives the rotating shaft 5 to rotate intermittently, and the rotating shaft 5 drives the disc body 3 to perform intermittent rotation in the cylinder 1. The raw material falls from the feeding port 9 and falls into the punching hole 4. Then the disc body 3 rotates. At this time, the punching hole 4 with the raw material rotates to the bottom of the base block 10. Each hydraulic cylinder 7 drives the lifting plate 8 to move up and down alternately. When the lifting plate 8 moves down, the lifting plate 8 drives the base block 10 to move down, and the base block 10 drives the punching rod 12 to move down. The lower end of the punching rod 12 extends into the punching hole 4 with the raw material and presses the raw material tightly into the punching hole 4. Since the diameter of the punching rod 12 is smaller than the diameter of the punching hole 4, the punching rod 12 can press the raw material into the following shape: Figure 5 The shape shown, at the same time, the lower end of the punching hole 4 with the raw material is blocked by the bottom of the cylinder 1, so that the punching rod 12 can effectively punch and press the raw material; After the first punching is completed, the punching rod 12 moves up, and then the disc 3 rotates and is opposite to the next feeding port 9, and then the raw material falls into the punching hole 4 again, and then the disc 3 rotates and performs a second punching and pressing, and so on, the punching hole 4 is loaded multiple times, and a pressing is performed after each loading, so that the processed biomass particles 101 are compact and burn-resistant. After multiple loading and punching and forming, the disc 3 transfers the punched and pressed biomass particles 101 to a position opposite to the discharge port 2, and then the lifting plate 8 moves down, driving the base block 10 opposite to the discharge port 2 to move down, and the base block 10 drives the unloading rod 11 to move down, and the unloading rod 11 pushes down the biomass particles 101 in the punching hole 4 at this time, and falls from the discharge port 2 to realize unloading; the shape of the lower end of the unloading rod 11 is as follows Fig.11As shown, the outer ring of the lower end of the feed rod 11 is provided with a push block 30 which is slightly smaller than the diameter of the punching hole 4, the lower end of the feed rod 11 is inserted into the combustion hole 102, and the push block 30 is pressed on the upper end surface of the biomass particle 101. In the process of pushing and pushing, it can ensure that the biomass particle 101 is effectively pushed down, and it can avoid the biomass particle 101 from being squeezed and damaged. The push block 30 squeezes the upper end surface of the biomass particle 101, and the upper edge of the combustion hole 102 is supported by the outer ring of the lower end of the feed rod 11 to avoid being squeezed and damaged. The biomass pellet making machine is designed with a lifting plate 8 that cooperates with multiple base blocks 10, and can move the multiple base blocks 10 up and down synchronously, and multiple feeding ports 9 can realize continuous loading and punching in the punching hole 4, and the punching and unloading process is also carried out synchronously, that is, each link of loading, punching and unloading is executed in sequence without interfering with each other, with the efficiency of assembly line production, ensuring the granulation efficiency of biomass pellets 101, and the processed biomass pellets 101 have combustion-supporting holes 102, which improve the contact efficiency with the air and improve the combustion efficiency of the biomass pellets 101. The biomass pellets 101 of this shape are particularly suitable for the initial stage of ignition of the combustion furnace, and can quickly realize the generation of open flames and accelerate the ignition efficiency of the combustion furnace.

[0024] Reference Figure 1 - Fig.11 Each of the punching rods 12 includes a connecting portion 13 and a punching portion 14; the connecting portion 13 is threadedly connected to the base block 10, and a cylinder 15 is provided in the base block 10 to be threadedly connected to the connecting portion 13; a nut 16 is provided at the junction of the connecting portion 13 and the punching portion 14, and a ring-shaped groove 17 is provided on the lower end surface of the nut 16, a spring 18 is provided in the groove 17, and a ring body 19 is provided at the lower end of the spring 18, and the spring 18 and the ring body 19 are both sleeved on the punching portion 14; A nut 16 is provided at the junction of the punching part 14 and the connecting part 13. The nut 16 can rotate along the bolt on the connecting part 13 and move up and down. A spring 18 and a ring body 19 are provided below the nut 16. The diameter of the ring body 19 is slightly smaller than the diameter of the punching hole 4. When the punching part 14 punches the raw material, the ring body 19 extends to the punching hole 4 and squeezes the upper edge of the punched raw material, which is to regularize the raw material in the punching hole 4 and squeeze the upper surface of the raw material flat. Each surface is squeezed flat, so that the processed biomass particles 101 tend to be complete, and the quality of the biomass particles 101 is improved; The connecting portion 13 is connected to the cylinder 15 on the base block 10 by means of a thread. By rotating the punching rod 12, the punching rod 12 can be extended to a depth in the base block 10, thereby adjusting the effective punching depth of the punching portion 14, which is suitable for punching raw materials with different hardness. For example, for some powder raw materials with higher hardness, the overall length of the punching portion 14 can be adjusted to be smaller, and the powder raw materials can be punched and formed. For some powder raw materials with lower hardness, the overall length of the punching portion 14 needs to be adjusted to be larger, so that the powder raw materials can be punched and formed. After the connection part 13 is rotated and adjusted, the nut 16 is rotated, and the nut 16 is pressed against the lower surface of the base block 10 to enhance the stability between the connection part 13 and the base block 10; The upper half of the feed rod 11 and the connecting portion 13 of the punch rod 12 have the same structural design, which can adjust the depth of the feed rod 11 penetrating into the punch hole 4 and effectively push down and separate the punched biomass particles 101.

[0025] Reference Figure 1 - Fig.11 Each of the stamping parts 14 is in a truncated cone shape, the diameter of the lower end surface of each stamping part 14 is smaller than the diameter of the upper end surface thereof, and a pointed portion 20 is provided at the lower end of each stamping part 14; The punching rod 12 is composed of a connecting portion 13 and a punching portion 14. The punching portion 14 is used to punch and shape the raw material in the punching hole 4. In order to ensure that the punching portion 14 can be smoothly separated from the combustion-supporting hole 102 and reduce the punching portion 14 from extending out of the punching hole 4 to damage the punched biomass particles 101, the punching portion 14 is designed to be a truncated cone, such as Fig. 9 and Fig.10 As shown, the diameter of the lower end of the stamping part 14 is smaller, and the diameter of the upper end is larger, which is convenient for the detachment of the stamping part 14, and the lower end of the stamping part 14 is provided with a pointed part 20 to facilitate the stamping and expansion of the raw material, so that the raw material extends to the periphery of the stamping part 14, which is helpful for the formation of the combustion-supporting hole 102.

[0026] Reference Figure 1 - Fig.12 Each of the feeding ports 9 is provided with a feeding assembly, which includes a funnel 21 arranged above the lifting plate 8, and a material guide pipe 22 is fixedly connected to the lower end of the funnel 21; A support frame 23 is fixedly connected to the outer ring of the upper half of each of the guide tubes 22, and the support frame 23 is used to fix and stabilize the funnel 21 and the guide tube 22; The feeding assembly is used for feeding powder raw materials. Because the powder raw materials have a large drop height when being fed from the tubular screw conveyor 29 into the cylinder 1, dust is easily generated. Therefore, a feeding assembly is provided. The tubular screw conveyor 29 conveys the powder raw materials into the funnel 21, and the powder raw materials fall along the funnel 21 into the guide pipe 22. The powder raw materials are constrained by the funnel 21 and the guide pipe 22, thereby reducing dust.

[0027] Reference Figure 1 - Fig.12 A plurality of piston cylinders 24 are evenly arranged on the outer ring of the cylinder 1, a hollow rod 25 is slidably connected in the piston cylinder 24, the upper end of the hollow rod 25 is fixed on the lifting plate 8, and an air pipe 26 is connected to the hollow rod 25, the end of the air pipe 26 penetrates into the guide pipe 22, and is extended along the axial direction of the guide pipe 22; The piston cylinder 24 on the cylinder 1 cooperates with the hollow rod 25 on the lifting plate 8 for two purposes. The first purpose is to constrain the up and down movement path of the lifting plate 8 to ensure the straightness of the up and down movement of the lifting plate 8, so that the punching rod 12 and the discharge rod 11 can be accurately inserted into the punching hole 4 to ensure the stable operation of the granulator. The second purpose is to use the relative linear movement between the piston cylinder 24 and the hollow rod 25 to generate gas to impact and discharge the powder raw material in the guide tube 22 to prevent the raw material from being blocked in the guide tube 22. A one-way valve is provided at the lower end of the piston cylinder 24 to limit only external gas from entering the piston cylinder 24. A one-way valve is also provided on the air pipe 26 to limit only the gas in the piston cylinder 24 from being discharged from the air pipe 26. When the lifting plate 8 drives the hollow rod 25 to move upward, the external gas is filled into the piston cylinder 24. When the lifting plate 8 drives the hollow rod 25 to move downward, the gas in the piston cylinder 24 flows along the hollow rod 25 and is discharged from the air pipe 26. The gas impacts the raw materials in the guide tube 22, disperses the raw materials, and allows the raw materials to fall smoothly into the stamping hole 4.

[0028] Reference Figure 1 - Fig.14 The lower end of the material guide pipe 22 is fixedly connected with a material guide cover 27, a screen 28 is provided at the bottom of the material guide cover 27, and the exhaust direction of the air pipe 26 points to the upper surface of the screen 28; The air pipes 26 connected to two adjacent hollow rods 25, one of which extends into the material guide pipe 22, and the other extends onto the screen 28. The gas discharged from the other air pipe 26 is used to impact the raw materials on the screen 28; the material guide cover 27 is used to disperse the raw materials. When the raw materials fall from the material guide pipe 22 to the material guide cover 27, the gas impacts the raw materials on the screen 28, so that the raw materials can be dispersed and can fall smoothly into the punching hole 4, ensuring that the amount of raw materials in each punching hole 4 is the same, and the produced and processed biomass particles 101 tend to be in the same state, ensuring the stability of the open flame during combustion.

[0029] Reference Figure 1 - Fig.14 The middle position of the screen 28 is protruding upward; The middle part of the screen 28 protrudes upward. When the raw material falls on the screen 28, it flows along the inclination angle of the screen 28, and the raw material can be Fig.14The falling state shown makes the raw material evenly distributed in each punching hole 4, further improving the regularity of the biomass particles 101 after punching.

[0030] Reference Figure 1 - Fig.13 A plurality of air jet holes are provided on the surface of the air pipe 26 in the material guide pipe 22, and the exhaust direction of the air jet holes is tilted downward; The air pipe 26 located in the material guide pipe 22 has a plurality of air jet holes on its surface. The air jet holes are tilted downward so that when the gas is discharged, it can impact the raw materials in the material guide pipe 22 to flow downward. Firstly, the smoothness of the raw materials falling is improved, and secondly, the raw materials can reduce dust when impacted by the gas.

[0031] Reference Fig.15 A biomass pellet making method, the biomass pellet making method comprises the above-mentioned biomass pellet making machine, and the biomass pellet making method comprises the following steps: S1: Raw material preparation Collecting raw materials: The raw materials of biomass pellets 101 come from a wide range of sources, mainly including wood chips, straw, waste crops and plant fibers; Pretreatment: The collected raw materials need to be pretreated to remove impurities and adjust the humidity to ensure the smooth progress of subsequent processing; S2: Raw material crushing Crushing: The raw materials are crushed, and the larger biomass raw materials are crushed into particles suitable for granulation through a crusher, with the diameter of the particles controlled at 5-8mm; Screening: Screen the crushed materials, send the materials larger than 8mm into the crusher for secondary crushing, and then send the qualified materials to the next process; S3: Drying Drying: After screening, the raw materials are transported to the drum dryer through an auger conveyor and dried by hot air; Control moisture: reduce the moisture content of raw materials to between 10% and 15%; S4: Granulation Pellet processing: The pretreated raw materials are sent to the biomass pellet machine for processing and pressing into shape.

[0032] After granulation and molding, it is necessary to undergo vibration screening, and the qualified and regular biomass particles 101 are packed into boxes, and the unformed ones are put into a crusher for crushing and reuse.

[0033] Working principle: In this embodiment, the biomass pellet machine is designed, and the biomass pellets 101 produced and processed are cylindrical in shape as a whole, and one end surface of the biomass pellet machine retains a combustion-supporting hole 102, such as Figure 5 The stereogram is shown as Figure 6 A cross-sectional view thereof is shown; The specific working process of the biomass pellet making machine in this embodiment is that a tubular screw conveyor 29 is arranged at each feeding port 9 to convey the powdered raw materials into the feeding port 9; The driving motor drives the rotating shaft 5 to rotate intermittently, and the rotating shaft 5 drives the disc body 3 to perform intermittent rotation in the cylinder 1. The raw material falls from the feeding port 9 and falls into the punching hole 4. Then the disc body 3 rotates. At this time, the punching hole 4 with the raw material rotates to the bottom of the base block 10. Each hydraulic cylinder 7 drives the lifting plate 8 to move up and down alternately. When the lifting plate 8 moves down, the lifting plate 8 drives the base block 10 to move down, and the base block 10 drives the punching rod 12 to move down. The lower end of the punching rod 12 extends into the punching hole 4 with the raw material and presses the raw material tightly into the punching hole 4. Since the diameter of the punching rod 12 is smaller than the diameter of the punching hole 4, the punching rod 12 can press the raw material into the following shape: Figure 5 The shape shown, at the same time, the lower end of the punching hole 4 with the raw material is blocked by the bottom of the cylinder 1, so that the punching rod 12 can effectively punch and press the raw material; After the first stamping is completed, the stamping rod 12 moves up, and then the disc 3 rotates and is opposite to the next feeding port 9, and then the raw material falls into the stamping hole 4 again, and the second stamping and pressing is performed, and then the disc 3 rotates, and so on, the stamping hole 4 is loaded multiple times, and a pressing is performed after each loading, so that the processed biomass particles 101 are compact and burn-resistant. After multiple loading and stamping, the disc 3 transfers the stamped and pressed biomass particles 101 to a position opposite to the discharge port 2, and then the lifting plate 8 moves down, driving the base block 10 opposite to the discharge port 2 to move down, and the base block 10 drives the unloading rod 11 to move down, and the unloading rod 11 pushes down the biomass particles 101 in the stamping hole 4 at this time, and falls from the discharge port 2 to realize unloading; the shape of the lower end of the unloading rod 11 is as follows Fig.11 As shown, the outer ring of the lower end of the feed rod 11 is provided with a push block 30 which is slightly smaller than the diameter of the punching hole 4, the lower end of the feed rod 11 is inserted into the combustion hole 102, and the push block 30 is pressed on the upper end surface of the biomass particle 101. In the process of pushing and pushing, it can ensure that the biomass particle 101 is effectively pushed down, and it can avoid the biomass particle 101 from being squeezed and damaged. The push block 30 squeezes the upper end surface of the biomass particle 101, and the upper edge of the combustion hole 102 is supported by the outer ring of the lower end of the feed rod 11 to avoid being squeezed and damaged. During the punching process of the punching rod 12 punching the raw material in the punching hole 4, a tip 20 is provided at the lower end of the punching portion 14 to facilitate punching and expanding the raw material so that the raw material extends toward the periphery of the punching portion 14, which is helpful for forming the combustion-supporting hole 102; At the same time, taking into account that the feeding assembly is used to feed powder raw materials, since the powder raw materials have a large drop height when being fed from the tubular screw conveyor 29 into the cylinder 1, and are prone to dust, a feeding assembly is provided for this purpose. The tubular screw conveyor 29 conveys the powder raw materials to the funnel 21, and the powder raw materials fall along the funnel 21 into the guide pipe 22. The powder raw materials are constrained by the funnel 21 and the guide pipe 22, thereby reducing dust.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A biomass pellet making machine, characterized in that: It comprises a cylinder (1) with an upper end in an open state, a discharge port (2) being provided at an eccentric position on the lower end surface of the cylinder (1), a disc (3) being rotatably connected inside the cylinder (1), a plurality of through-type punching holes (4) being evenly provided on the disc (3), a rotating shaft (5) being fixedly connected at the axis position of the disc (3), an end of the rotating shaft (5) passing through the bottom of the cylinder (1) and being connected to a driving motor provided at the bottom of the cylinder (1); A punching assembly is provided on the outside of the cylinder (1), and the punching assembly comprises a plurality of brackets (6) arranged on the ground, each bracket (6) being arranged on the periphery of the cylinder (1), each bracket (6) extending upward to the upper end of the cylinder (1), the upper end of each bracket (6) being fixedly connected to a hydraulic cylinder (7), the output end of each hydraulic cylinder (7) being commonly fixedly connected to a lifting plate (8), a plurality of feeding ports (9) being evenly provided on the lifting plate (8), a plurality of base blocks (10) being evenly provided on the lower surface of the lifting plate (8), each base block (10) being arranged between adjacent feeding ports (9), wherein a plurality of discharge rods (11) are evenly provided on the lower surface of the base block (10) opposite to the discharge port (2), and a plurality of punching rods (12) are evenly provided on the lower surface of each base block (10) staggered from the discharge port (2), and the diameter of each punching rod (12) is smaller than the diameter of the punching hole (4).

2. A biomass pellet making machine according to claim 1, characterized in that: Each of the punching rods (12) comprises a connecting portion (13) and a punching portion (14); the connecting portion (13) is threadedly connected in the base block (10), and a cylinder (15) is provided in the base block (10) and is adapted to be threadedly connected to the connecting portion (13); a nut (16) is provided at the junction of the connecting portion (13) and the punching portion (14), a ring-shaped groove (17) is provided on the lower end surface of the nut (16), a spring (18) is provided in the groove (17), and a ring body (19) is provided at the lower end of the spring (18), and the spring (18) and the ring body (19) are both sleeved on the punching portion (14).

3. A biomass pellet making machine according to claim 1, characterized in that: Each of the punching parts (14) is in the shape of a truncated cone, the diameter of the lower end surface of each punching part (14) is smaller than the diameter of the upper end surface thereof, and a pointed part (20) is provided at the lower end of each punching part (14).

4. A biomass pellet making machine according to claim 1, characterized in that: A feeding assembly is provided in each of the feeding ports (9), the feeding assembly comprising a funnel (21) arranged above the lifting plate (8), and a material guide pipe (22) is fixedly connected to the lower end of the funnel (21); A support frame (23) is fixedly connected to the outer ring of the upper half of each material guide tube (22), and the support frame (23) is used to fix and stabilize the funnel (21) and the material guide tube (22).

5. The biomass pellet making machine according to claim 1, characterized in that: A plurality of piston cylinders (24) are evenly arranged on the outer ring of the cylinder (1), a hollow rod (25) is slidably connected inside the piston cylinder (24), the upper end of the hollow rod (25) is fixedly connected to the lifting plate (8), and an air pipe (26) is connected to the hollow rod (25), the end of the air pipe (26) penetrates into the material guide pipe (22) and is extended along the axial direction of the material guide pipe (22).

6. A biomass pellet making machine according to claim 5, characterized in that: The lower end of the material guide pipe (22) is fixedly connected to a material guide cover (27), a screen (28) is provided at the bottom of the material guide cover (27), and the exhaust direction of the air pipe (26) points to the upper surface of the screen (28).

7. A biomass pellet making machine according to claim 6, characterized in that: The middle position of the screen (28) is arranged to protrude upwards.

8. A biomass pellet making machine according to claim 6, characterized in that: A plurality of air jet holes are provided on the surface of the air pipe (26) located in the material guide pipe (22), and the exhaust direction of the air jet holes is inclined downward.

9. A biomass pelletizing method, comprising a biomass pelletizing machine according to any one of claims 1 to 8, characterized in that: The biomass pelletizing method comprises the following steps: S1: Raw material preparation Collecting raw materials: The raw materials of biomass pellets come from a wide range of sources, mainly including wood chips, straw, waste crops and plant fibers; Pretreatment: The collected raw materials need to be pretreated to remove impurities and adjust the humidity to ensure the smooth progress of subsequent processing; S2: Raw material crushing Crushing: The raw materials are crushed, and the larger biomass raw materials are crushed into particles suitable for granulation through a crusher, with the diameter of the particles controlled at 5-8mm; Screening: Screen the crushed materials, send the materials larger than 8mm into the crusher for secondary crushing, and then send the qualified materials to the next process; S3: Drying Drying: After screening, the raw materials are transported to the drum dryer through an auger conveyor and dried by hot air; Control moisture: reduce the moisture content of raw materials to between 10% and 15%; S4: Granulation Pellet processing: The pretreated raw materials are sent to the biomass pellet machine for processing and pressing into shape.

10. A biomass pelletizing method according to claim 9, characterized in that: After pelletizing and forming, they need to go through vibration screening, and the qualified and regular biomass particles are packed into boxes, and the unformed ones are put into the crusher for crushing and reuse.

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