Forest waste granulating device

Abstract

The utility model belongs to the technical field of granulation, and particularly relates to a forest waste granulation device. Comprising a barrel, a feeding port is formed in the top of the barrel, a mold disc is fixedly installed in the barrel, a gear ring is arranged at the bottom of an inner ring of the mold disc, an installation base is arranged in the barrel, a driving motor is fixedly installed on the installation base and is in transmission connection with a pressing roller and a cutting rod, a plurality of sets of through holes are formed in the bottom of the mold disc, and an ejector rod is slidably installed in each set of through holes; a spring is connected between the ejector rod and the mounting base, a connecting rod is mounted at the output end of the driving motor, a wedge block is mounted at the other end of the connecting rod, a material receiving disc is mounted in the barrel, and a discharging opening is formed in the barrel. The problems that when a large amount of wood chips are poured in, the wood chips in the device are squeezed and solidified through rotation of a through hole of a mold disc when a pressing roller squeezes the wood chips, flowing is not smooth, the running resistance of equipment is increased, the equipment is blocked and stops, and the production efficiency is affected are solved.

Description

Technical Field

[0001] This utility model belongs to the field of granulation technology, specifically relating to a granulation device for forest waste. Background Technology

[0002] Pine wilt disease, also known as pine rot, is a devastating epidemic affecting pine trees. It is caused by the pine wood nematode, which parasitizes pine trees and primarily damages Pinus species. The disease is highly virulent, causing rapid host mortality; it spreads quickly and is difficult to control. Treatment methods for pine wilt-infected wood include incineration and processing into biomass fuel pellets. Compared to incineration, processing forest waste into wood pellets for use as biomass fuel is an environmentally friendly and economical method. Wood pellets have advantages such as high density, high energy content, and ease of storage and transportation, and are widely used in the energy sector. However, in existing pelletizing devices, if a slightly larger amount of sawdust is added, the rotating pressure rollers, as they squeeze the sawdust through the through-holes of the die, cause the sawdust inside the device to compact and clump together, hindering flow and increasing resistance to equipment operation. This can easily lead to blockages and shutdowns, affecting production efficiency.

[0003] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a pelletizing device for forest waste, which solves the problem that when more wood chips are poured in, the rotation of the pressure rollers as they squeeze the wood chips through the through holes of the die plate will cause the wood chips inside the device to be squeezed and compacted together, resulting in poor flow and increased resistance to the operation of the equipment. This can easily cause the equipment to stop and become blocked, thus affecting production efficiency.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] A pelletizing device for forest waste includes a cylindrical body with a feed inlet at the top. A mold plate is fixedly installed inside the cylindrical body, and a toothed ring is provided at the bottom of the inner ring of the mold plate. A mounting base is provided inside the cylindrical body, and a drive motor is fixedly installed on the mounting base. A rotating shaft is fixedly connected to the output end of the drive motor, and a connecting rod is fixedly installed on the rotating shaft. A pressure roller is rotatably connected to the other end of the connecting rod, and the pressure roller meshes with the toothed ring. A cutting rod is fixedly installed at the top of the rotating shaft. Several sets of through holes are opened at the bottom of the mold plate, and a push rod is slidably installed in each set of through holes. A spring connects the push rod to the mounting base. A connecting rod is fixedly installed at the output end of the drive motor, and a wedge is fixedly installed at the other end of the connecting rod. A receiving plate is fixedly installed inside the cylindrical body, and a discharge port is opened on the cylindrical body.

[0007] Based on the above technical solution, the present invention has made the following improvements:

[0008] Furthermore, the distance between the cutting rod and the outer ring of the mold is between 10mm and 30mm. This structural design keeps the length of the formed wood pellets within a range conducive to stable combustion, avoiding problems such as flame flickering or extinguishing due to excessively short wood pellets causing rapid combustion, or poor ventilation due to excessively long wood pellets, thus affecting the stability of combustion.

[0009] Furthermore, a sweeping plate is fixedly installed at the bottom of the cutting rod; as the cutting rod rotates, the sweeping plate sweeps the wood particles that the cutting rod knocks down onto the receiving tray to the discharge port, which facilitates the discharge of wood particles and prevents them from accumulating in the receiving tray.

[0010] Furthermore, the top surface of the push rod is flush with the bottom upper surface of the mold plate in the natural state of the spring; this structural design will not interfere with the rotation of the pressure roller on the mold plate, and will also allow the push rod to smoothly push upward and fall back as the wedge blocks rotate, thus dispersing the wood chips that have been squeezed together and preventing them from causing blockage and shutdown of the equipment.

[0011] Furthermore, the aperture size on the mold plate is between 6mm and 8mm. Wood particles within this diameter range can achieve high combustion efficiency during combustion, ensuring sufficient combustion reaction area while concentrating heat and reducing heat loss, thereby achieving more complete combustion and improving combustion efficiency. This avoids the problems of wood particles being too large, resulting in incomplete combustion of internal fuel and energy waste, or wood particles being too small, resulting in excessively fast combustion speed, incomplete combustion, and the production of more harmful gases such as carbon monoxide.

[0012] The beneficial effects of this utility model are as follows: By cooperating with the mold plate and the pressure roller, the material is uniformly extruded, ensuring the molding quality and consistency of the wood pellets. At the same time, as the motor rotates, the wedge block continuously lifts the top rod at the bottom of the mold plate, dispersing the unformed and compacted wood chips accumulated in the mold plate. This avoids the problem that the wood chips inside the device are squeezed and compacted together under the pressure of the rotating pressure roller, which would cause poor flow, increase the resistance of the equipment operation, and easily cause the equipment to stop and stop, thus affecting production efficiency. Attached Figure Description

[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the structure of a forest waste granulation device according to an embodiment of this utility model;

[0015] Figure 2 This is a longitudinal cross-sectional structural diagram of a forest waste granulation device according to an embodiment of this utility model;

[0016] Figure 3 This is a cross-sectional structural schematic diagram of a forest waste granulation device according to an embodiment of this utility model;

[0017] Among them, 1-cylinder, 11-feed inlet, 12-mounting base, 13-discharge outlet, 2-mold plate, 21-gear ring, 22-through hole, 3-drive motor, 4-rotating shaft, 41-connecting rod, 42-cutting rod, 421-sweeping plate, 5-pressure roller, 6-top rod, 7-spring, 8-connecting rod, 9-wedge block, 10-receiving plate. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0019] like Figures 1 to 3As shown, a granulation device for forest waste includes a cylindrical body 1. A feed inlet 11 is located at the top of the cylindrical body 1. A mold plate 2 is fixedly installed inside the cylindrical body 1. A toothed ring 21 is located at the bottom of the inner ring of the mold plate 2. A mounting base 12 is located inside the cylindrical body 1. A drive motor 3 is fixedly installed on the mounting base 12. A rotating shaft 4 is fixedly connected to the output end of the drive motor 3. A connecting rod 41 is fixedly installed on the rotating shaft 4. A pressure roller 5 is rotatably connected to the other end of the connecting rod 41. The pressure roller 5 meshes with the toothed ring 21. A cutting rod 42 is fixedly installed at the top of the rotating shaft 4. After the drive motor 3 starts, it drives the rotating shaft 4 to rotate. The connecting rod 41 fixedly installed on the rotating shaft 4 moves in a circular motion along with the rotating shaft 4, and the pressure roller 5 rotatably connected to the other end of the connecting rod 41 also moves accordingly. Because the pressure roller 5 meshes with the toothed ring 21 at the bottom of the inner ring of the mold disk 2, the pressure roller 5 revolves around the rotating shaft 4 while also rotating on its own axis under the action of the toothed ring 21, making the pelleting process continuous and efficient, greatly improving production efficiency. As the rotating shaft 4 rotates, the cutting rod 42 fixedly installed at its top also makes circular motion. When the forest waste pressed into the through hole 22 is squeezed out to a certain length from the bottom of the through hole 22, the cutting rod 42 will cut it, thereby forming wood pellet fuel. The bottom of the mold disk 2 has several sets of through holes 22, and each set of through holes 22 is slidably installed with a top rod 6. A spring 7 is connected between the top rod 6 and the mounting base 12. A connecting rod 8 is fixedly installed at the output end of the drive motor 3, and a wedge 9 is fixedly installed at the other end of the connecting rod 8. The drive motor 3 drives the connecting rod 8 to rotate, and the wedge 9 fixedly installed at the other end of the connecting rod 8 also makes circular motion. When the wedge 9 rotates to contact the push rod 6, it lifts the push rod 6 upward, causing it to slide upward in the through hole 22. This stretches the spring 7 connecting the mounting base 12 and the push rod 6. After the wedge 9 rotates away, the push rod 6 is pulled back by the spring 7 and slides downward in the through hole 22 until the spring returns to its natural state. This loosens the sawdust in the mold, preventing equipment blockage and shutdown, and avoiding impact on production efficiency. A receiving tray 10 is fixedly installed inside the cylinder 1, and a discharge port 13 is provided on the cylinder 1.

[0020] Specifically, the distance between the cutting rod 42 and the outer ring of the mold plate 2 is between 10mm and 30mm. This structural design keeps the length of the formed wood pellets within a range conducive to stable combustion, avoiding problems such as flame flickering or extinguishing due to excessively short wood pellets causing unstable combustion, or poor ventilation due to excessively long wood pellets, thus affecting the stability of combustion.

[0021] Specifically, a sweeping plate 421 is fixedly installed at the bottom of the cutting rod 42; as the cutting rod 42 rotates, the sweeping plate 421 sweeps the wood particles that the cutting rod 42 knocks onto the receiving tray 10 to the discharge port 13, which facilitates the discharge of wood particles and prevents them from accumulating in the receiving tray 10.

[0022] Specifically, the top surface of the push rod 6 is flush with the bottom upper surface of the mold plate 2 in the natural state of the spring 7; this structural design will not interfere with the rotation of the pressure roller 5 on the mold plate 2, and will also allow the push rod 6 to smoothly push upward and fall back as the wedge block 9 rotates, so as to loosen the wood chips that are piled up and squeezed together, making it easier for the pressure roller 5 to press them out.

[0023] Specifically, the aperture size on the mold plate 2 is between 6mm and 8mm. Wood particles within this diameter range can achieve high combustion efficiency during combustion, ensuring sufficient combustion reaction area while concentrating heat and reducing heat loss, thereby achieving more complete combustion and improving combustion efficiency. This avoids the problems of wood particles being too large, resulting in incomplete combustion of internal fuel and energy waste, or wood particles being too small, resulting in excessively fast combustion speed, incomplete combustion, and the production of more harmful gases such as carbon monoxide.

[0024] The method of using this utility model is as follows: Wood chips are added through the feed inlet 11. As the wood chips enter the cylinder 1, the drive motor 3 drives the rotating shaft 4 to rotate. The rotating shaft 4 causes the pressure roller 5 to roll on the gear ring 21 through the connecting rod 41. The pressure roller 5 cooperates with the mold plate 2 to squeeze the wood chips through the mold plate 2 to form wood particles. The cutting rod 42 at the top of the rotating shaft 4 rotates with the rotating shaft 4 and cuts the formed wood particles squeezed out from the through hole 22 of the mold plate 2. At the same time, the rotation of the drive motor 3 drives the connecting rod 8 to rotate, and the wedge block 9 fixedly connected to the connecting rod 8 rotates accordingly. The wedge block 9 periodically lifts the top rod 6, causing the top rod 6 to slide up and down in the through hole 22 under the action of the spring 7, continuously lifting the squeezed and solidified wood chips in the mold plate 2, making them loose, so that the pressure roller 5 can squeeze and shape the wood chips. The cut wood pellets fall onto the receiving tray 10, while a sweeping plate 421 is fixedly installed at the bottom of the top rod 42. The sweeping plate 421 rotates with the rotation of the top rod 42, sweeping the wood pellets that fall onto the receiving tray 10 to the discharge port 13 for discharge. Finally, a suitable collection container is placed at the discharge port 13 to collect the finished wood pellets.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A pelletizing device for forest waste, comprising a cylinder (1), characterized in that: The top of the cylinder (1) is provided with a feed inlet (11). A mold plate (2) is fixedly installed inside the cylinder (1). A toothed ring (21) is provided at the bottom of the inner ring of the mold plate (2). A mounting seat (12) is provided inside the cylinder (1). A drive motor (3) is fixedly installed on the mounting seat (12). A rotating shaft (4) is fixedly connected to the output end of the drive motor (3). A connecting rod (41) is fixedly installed on the rotating shaft (4). A pressure roller (5) is rotatably connected to the other end of the connecting rod (41). The pressure roller (5) is connected to the toothed ring (21). The rotating shaft (4) is fixedly installed with a cutting rod (42) at the top. The bottom of the mold plate (2) is provided with several sets of through holes (22). Each set of through holes (22) is slidably installed with a push rod (6). A spring (7) is connected between the push rod (6) and the mounting base (12). A connecting rod (8) is fixedly installed at the output end of the drive motor (3). A wedge block (9) is fixedly installed at the other end of the connecting rod (8). A receiving plate (10) is fixedly installed inside the cylinder (1). A discharge port (13) is provided on the cylinder (1).

2. The forest waste granulation device according to claim 1, characterized in that: The distance between the cutting rod (42) and the outer ring of the mold plate (2) is between 10mm and 30mm.

3. The forest waste granulation device according to claim 2, characterized in that: A sweeping plate (421) is fixedly installed at the bottom of the cutting rod (42).

4. The forest waste granulation device according to claim 3, characterized in that: The top surface of the push rod (6) is flush with the bottom upper surface of the mold plate (2) in the natural state of the spring (7).

5. A granulation device for forest waste according to claim 4, characterized in that: The aperture size on the mold plate (2) is between 6mm and 8mm.

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