A self-regulating cutter

Abstract

This utility model discloses a self-adjusting speed pelletizer, including a pelletizing bin with an inlet and an outlet, and a downward-facing discharge hopper fixed to the outlet. A pelletizing mechanism for pelletizing materials is provided inside the pelletizing bin. A monitoring mechanism, including a metering component and a discharge baffle, is provided inside the discharge hopper. The discharge baffle can swing left and right, and the metering component is located to the left or right below the discharge baffle. Material guided by the discharge baffle falls into the metering component for weight detection. The signal input terminal of the controller of the self-adjusting speed pelletizer is connected to the metering component and a timer, and the control output terminal is connected to a speed regulating mechanism for adjusting the speed of the pelletizing mechanism and the discharge baffle. This self-adjusting speed pelletizer effectively solves the problem of uneven particle size caused by uneven extrusion speed, greatly improves product quality, saves labor costs, and increases the automation level of the production process.

Description

Technical Field

[0001] This utility model relates to the field of pelletizer technology, and in particular to a self-adjusting speed pelletizer. Background Technology

[0002] A pelletizer (also known as a granulator or pelletizing equipment) is used to cut molten or softened continuous strip or sheet materials into uniformly sized pellets. It is usually located at the rear end of equipment such as extruders and reactors, and is mainly used in the fields of plastics, chemical fibers, rubber, food and medicine.

[0003] Traditional pelletizers typically operate at a fixed rotation speed. However, in actual production, due to factors such as pressure changes, temperature fluctuations, and unevenness of raw materials within the extruder, the extruder's output is often not uniform and stable, with significant fluctuations in its output speed and quantity.

[0004] Uneven extrusion can cause serious problems in the subsequent pelletizing process. When the extruder's output speed is high, if the pelletizer's rotation speed cannot be increased accordingly, the resulting pellets will be too large; conversely, when the extruder's output speed is slow and the pelletizer's rotation speed is too high, the pellets will be too small. This uneven pellet size severely affects the quality and performance of the product. For example, in the production of plastic products, using unevenly sized pellets may lead to inconsistent strength, toughness, and other properties in the finished product, thereby reducing its overall quality.

[0005] To minimize uneven particle size, close monitoring and frequent adjustments to the extruder and pelletizer's operation are typically required manually. This not only increases the workload for workers but also, due to the limitations of manual operation, makes timely and accurate adjustments difficult, thus impacting production efficiency.

[0006] While some existing pelletizers attempt to address the unevenness of extruder output through simple control methods, the results are not ideal. For example, some time-interval-based control methods cannot accurately adjust in real time according to the actual output; others based on pressure or flow rate detection also fail to comprehensively and accurately reflect the true state of the material due to the limitations of the detection parameters, thus failing to effectively guarantee the uniformity of particle size.

[0007] In summary, existing pelletizers have many shortcomings in addressing the problem of uneven extrusion speed. Therefore, there is an urgent need for a new type of pelletizer that can automatically adjust the cutting speed in real time and accurately based on the discharge conditions to ensure uniform pellet size. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a self-adjusting speed pelletizer that can automatically adjust the cutting speed according to the material output, thereby ensuring uniform particle size.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A self-regulating speed pelletizer includes:

[0011] The pelletizing bin has a feed inlet and a discharge outlet, and a downward-facing discharge hopper is fixed on the discharge outlet;

[0012] The pelletizing mechanism, located inside the pelletizing bin, includes a cutting wheel for pelletizing the material, and the cutting wheel is connected to a cutting motor that drives its rotation;

[0013] Also includes:

[0014] The monitoring mechanism, located inside the discharge hopper, includes a metering component and a discharge baffle. The discharge baffle can swing left and right. The metering component is located on the left or right side below the discharge baffle. The material guided by the discharge baffle can fall into the metering component for weight detection.

[0015] Speed ​​control mechanism, including a frequency converter connected to the cutting motor; and

[0016] The control mechanism includes a controller, the signal input terminal of which is connected to a metering component and a timer, and the control output terminal is connected to a frequency converter and a discharge baffle.

[0017] A further technical solution is that the lower end of the discharge baffle is swayably fixed inside the discharge hopper via a first rotating shaft;

[0018] The first rotating shaft is connected to a first driving unit that drives its rotation. The first driving unit is connected to the control output terminal of the controller and is used to control the upper end of the discharge baffle to swing back and forth and lock.

[0019] The front and rear ends of the discharge baffle can slide in contact with the front and rear sides of the discharge hopper, respectively.

[0020] A further technical solution is that the front and rear ends of the discharge baffle are covered with rubber strips.

[0021] A further technical solution is that the metering component includes:

[0022] A metering chamber, fixed to one side below the discharge baffle, has an open top and a hinged bottom that can be flipped open downwards; and

[0023] The weighing scale is fixed to the upper surface of the flip plate.

[0024] A further technical solution is that the flap is rotatably fixed to the bottom of the metering chamber via a second rotating shaft, the second rotating shaft is connected to a second driving unit that drives its rotation, and the second driving unit is connected to the control output terminal of the controller.

[0025] A further technical solution is that the top of the metering chamber is provided with a movable and lockable protective plate, which can cover the top of the metering chamber.

[0026] A further technical solution is that the protective plate is horizontally arranged, and a third driving unit capable of driving its horizontal movement and locking is connected to the protective plate;

[0027] The third drive unit is connected to the control output terminal of the controller.

[0028] A further technical solution is that a guide plate is provided above the metering bin, the upper end of the guide plate is located at the outer edge of the discharge port of the pelletizing bin, the lower end of the guide plate is located above the metering bin, and the front and rear ends of the guide plate are connected to the front and rear sides of the discharge hopper.

[0029] A further technical solution is that the pelletizing mechanism further includes:

[0030] Upper pressure roller; and

[0031] The lower pressure roller is located below the upper pressure roller;

[0032] A fourth drive unit is connected to the upper or lower pressure roller to drive its rotation;

[0033] A conveying channel is formed between the upper and lower pressure rollers to allow material to pass through. The inlet end of the conveying channel is connected to the feed inlet of the pelletizing bin. The cutting wheel is located at the outlet end of the conveying channel. Baffles are provided on both sides of the conveying channel.

[0034] A further technical solution is that a strip roller is rotatably provided at the feed inlet inside the pelletizing bin.

[0035] The beneficial effects of adopting the above technical solution are as follows:

[0036] This self-adjusting speed pelletizer effectively solves the problem of uneven pellet size caused by uneven extrusion speed, greatly improving product quality. The produced pellets are more uniform in size, resulting in superior physical properties and appearance in subsequent processed plastic products, thus enhancing their market competitiveness.

[0037] Secondly, it significantly saves labor costs, achieves automatic speed regulation, reduces reliance on manual intervention, lowers the labor intensity and work pressure of workers, and improves the degree of automation in the production process. Attached Figure Description

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0039] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0040] Figure 2 This is a schematic diagram of the cutting mechanism in this utility model (with the pelletizing bin in its deployed state);

[0041] Figure 3 This is a schematic diagram of the structure inside the discharge hopper of this utility model. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Example 1:

[0045] like Figures 1-3 As shown, a self-regulating speed pelletizer includes a pelletizing bin 10 mounted on a pelletizer base. The pelletizing bin 10 has a feed inlet 101 and a discharge outlet 102. The feed inlet 101 is located on a side panel of the pelletizing bin 10 and connects to the discharge outlet 102 of the extrusion equipment. Continuous strip-shaped or sheet-shaped material enters the pelletizing bin 10 through the feed inlet 101. A strip roller 103 is rotatably mounted inside the pelletizing bin 10 at the feed inlet 101. The strip roller 103 is a driven component, and the material is placed above the strip roller 103 and conveyed inwards. The purpose of the strip roller 103 is to lift the material and reduce friction between the material and the bottom of the pelletizing bin 10. The discharge outlet 102 is located on a panel at the bottom of the pelletizing bin 10.

[0046] A pelletizing mechanism is provided inside the pelletizing bin 10. The pelletizing mechanism includes an upper pressure roller 304 and a lower pressure roller 305 below the upper pressure roller 304. The two ends of the upper pressure roller 304 and the lower pressure roller 305 are rotatably connected to the side wall of the pelletizing bin 10 through bearings. A fourth drive unit is connected to the upper pressure roller 304 or the lower pressure roller 305 to drive its rotation. The gap between the upper pressure roller 304 and the lower pressure roller 305 forms a conveying channel that allows materials to pass through. Baffles 306 are provided on both sides of the conveying channel to limit the width of the conveying channel and prevent the material from shifting laterally during conveying. The inlet end of the conveying channel is used to receive the material conveyed by the material strip roller 103, and the outlet end of the conveying channel is provided with a cutting wheel 301 for pelletizing the material.

[0047] The upper pressure roller 304 and lower pressure roller 305 work together to continuously feed material into the pelletizing bin 10. The fourth drive unit can be a motor, and the feeding speed of the upper pressure roller 304 or lower pressure roller 305 can be adjusted by controlling the speed of the motor to match the extruder's discharge speed, thus preventing excessive accumulation of material after extrusion. The control method of the fourth drive unit is linked to the extruder's discharge speed, and closed-loop synchronous control of the two can be achieved through manual adjustment or other existing PLC control systems.

[0048] The cutting wheel 301 is made of high-strength wear-resistant material and has multiple teeth evenly arranged in a circumferential direction on its outer edge. The cutting wheel 301 is rotatably set and connected to a cutting motor 302 that drives it to rotate. The cutting motor 302 drives the cutting wheel 301 to rotate counterclockwise and cut downward toward the material. Since the cutting wheel 301 is located above the discharge port 102, the cut material is discharged downward from the discharge port 102 into the pelletizing bin 10.

[0049] The material enters the pelletizer chamber through the feed inlet 101. The upper pressure roller 304 and the lower pressure roller 305 press the material and pull it forward through the conveying channel. Then, the cutting wheel 301 cuts the material into uniformly sized pellets, which fall downward into the discharge outlet 102.

[0050] Example 2:

[0051] A downward-facing discharge hopper 20 is fixed to the discharge port 102. The discharge hopper 20 is a discharge channel of a certain length through which the cut material particles are discharged from the pelletizer. The discharge hopper 20 can be vertically downward or inclined downward, but in actual use, it is easier to collect the falling material when the discharge hopper 20 is inclined. Therefore, it is preferred to set the discharge hopper 20 to be inclined downward.

[0052] A monitoring mechanism is provided inside the discharge hopper 20. The monitoring mechanism includes a metering component and a discharge baffle 401. The upper end of the discharge baffle 401 can swing left and right and lock. The metering component is located on one side below the discharge baffle 401. The material guided by the discharge baffle 401 can fall into the metering component for weight detection.

[0053] The self-adjusting speed pelletizer also includes a speed adjustment mechanism and a control mechanism. The speed adjustment mechanism and the control mechanism can be housed in a protective box 60. The protective box 60 is equipped with a door to facilitate the maintenance of the speed adjustment mechanism and the control mechanism.

[0054] The speed control mechanism includes a frequency converter connected to the cutting motor 302. The control mechanism includes a controller 50, whose signal input terminals are connected to a metering component and a timer, and whose control output terminals are connected to the discharge baffle 401 and the frequency converter. Depending on the controller's control settings, the timer can also be connected to the controller's control output terminal to receive a "start timing" command from the controller.

[0055] The lower end of the discharge baffle 401 is swayably fixed to the middle of the inner cavity of the discharge hopper 20 via a first rotating shaft. The first rotating shaft is connected to a first driving unit that drives its rotation. The first driving unit is connected to the control output terminal of the controller 50. The front and rear ends of the discharge baffle 401 can slide in contact with the front and rear sides of the discharge hopper 20, respectively. Preferably, rubber strips can be wrapped around the front and rear ends of the discharge baffle 401. The rubber strips can ensure the sealing of the contact between the discharge baffle 401 and the side of the discharge hopper 20, preventing material from falling through the gaps at the front and rear ends of the discharge baffle 401 and affecting the accuracy of the detection.

[0056] The first drive unit can drive the discharge baffle 401 to swing back and forth around the first rotating shaft. By controlling the rotation direction and angle of the first rotating shaft, the upper end of the discharge baffle 401 can be controlled to swing from the left side of the discharge port 102 to the right side of the discharge port 102, and can also swing from the right side of the discharge port 102 back to the left side of the discharge port 102. When the discharge baffle 401 swings to the left side of the discharge port 102, the right end face of the discharge baffle 401 forms an inclined right drop surface, and the material slides down along the right drop surface; when the discharge baffle 401 swings to the right side of the discharge port 102, the left end face of the discharge baffle 401 forms an inclined left drop surface, and the material slides down along the left drop surface.

[0057] like Figure 3 As shown, the metering component is located on the left side below the discharge baffle 401. When the discharge baffle 401 swings to the right side of the discharge port 102, the material slides down the left discharge surface and enters the metering component for weight detection.

[0058] The metering assembly includes a metering chamber 402 and a weighing scale 404. The metering chamber 402 is fixed to one side below the discharge baffle 401. The metering chamber 402 has a certain internal space, and its top is open. The bottom of the metering chamber 402 has a flip-down flap 403 that can be opened downwards. The flap 403 is rotatably fixed to the bottom of the metering chamber 402 via a second rotating shaft. The second rotating shaft is connected to a second driving unit that drives its rotation. The second driving unit is connected to the control output terminal of the controller 50. The weighing scale 404 is fixed to the upper surface of the flip-down flap 403, and the weighing surface of the weighing scale 404 has the same area as the bottom of the metering chamber 402. Material enters the metering chamber 402 from the top and accumulates on the weighing surface of the weighing scale 404 for weighing.

[0059] Example 3:

[0060] This self-adjusting speed pelletizer can regulate the pelletizing speed by detecting the amount of material discharged per unit time, so that the pelletizing speed of the pelletizer matches the discharge speed of the extruder. During adjustment, the controller 50 controls the first drive unit to rotate, causing the discharge baffle 401 to swing to the right side of the discharge port 102 and then stop. The controller 50 starts the timer to begin timing. After being guided by the discharge baffle 401, the material enters the metering chamber 402. The metering scale 404 feeds back the weight of the material to the controller 50 in real time. After a set time, the timer stops timing. The controller 50 reads the weight value of the material in the metering chamber 402 within a unit time. At the same time, the controller 50 controls the baffle to swing to the other side, so that the material no longer falls into the metering chamber 402. In addition, the controller 50 also controls the second rotating shaft to rotate, and the flap 403 flips down to open, discharging the material in the metering chamber 402. After a set time, the material in the metering chamber 402 is emptied. The controller 50 then controls the second rotating shaft to reverse so that the flap 403 closes up, thereby sealing the bottom of the metering chamber 402 for the next metering use.

[0061] When the weight of the material in the metering chamber 402 is less than the set value per unit time, it indicates that the extruder's discharge speed is slow, and the controller 50 controls the frequency converter to slow down the speed of the cutting motor 302. When the weight of the material in the metering chamber 402 is greater than the set value per unit time, it indicates that the extruder's discharge speed is fast, and the controller 50 controls the frequency converter to speed up the speed of the cutting motor 302. When the weight of the material in the metering chamber 402 is equal to the set value per unit time, the controller 50 does not issue a control command to the frequency converter, and the cutting wheel 301 maintains its existing cutting speed.

[0062] The frequency converter can precisely adjust the speed of the cutting motor 302 according to the instructions issued by the controller 50. The cutting motor 302 is connected to a reduction gearbox 303. The cutting motor 302 has a strong power output and can adjust its speed according to the instructions of the frequency converter. The power of the cutting motor 302 is smoothly transmitted to the cutting wheel 301 through the transmission mechanism, thereby adjusting the cutting speed of the cutting wheel 301. The transmission mechanism can be a chain and gear mechanism or a belt and pulley mechanism, and the configuration of the transmission mechanism is existing technology.

[0063] The frequency of the self-adjusting pelletizer is set according to the specific working conditions.

[0064] Example 4:

[0065] This self-adjusting speed pelletizer can regulate its pelletizing speed by detecting the time it takes for the pelletizer to discharge a unit weight of material, thus matching the pelletizing speed of the pelletizer with the discharge speed of the extruder. During adjustment, the controller 50 controls the first drive unit to rotate, causing the discharge baffle 401 to swing to the right side of the discharge port 102 and then stop. The controller 50 then controls the timer to start timing. After being guided by the discharge baffle 401, the material enters the metering chamber 402. The metering scale 404 feeds back the weight of the material to the controller 50 in real time. When the weight value fed back by the metering scale 404 reaches the set value, the controller 50 controls the timer to stop timing and reads the recorded duration. At the same time, the controller 50 controls the baffle to swing to the other side, so that the material no longer falls into the metering chamber 402. The controller 50 also controls the second rotating shaft to rotate, causing the flap 403 to flip downwards and open, discharging the material in the metering chamber 402. After the set time, the material in the metering chamber 402 is emptied. The controller 50 then controls the second rotating shaft to reverse so that the flap 403 closes upwards, thereby sealing the bottom of the metering chamber 402 for the next metering use.

[0066] When the time taken for a unit weight of material to fall into the metering chamber 402 exceeds the set value, it indicates that the extruder's discharge speed is slow, and the controller 50 controls the frequency converter to slow down the speed of the cutting motor 302; when the time taken for a unit weight of material to fall into the metering chamber 402 exceeds the set value, it indicates that the extruder's discharge speed is fast, and the controller 50 controls the frequency converter to speed up the speed of the cutting motor 302; when the time taken for a unit weight of material to fall into the metering chamber 402 is equal to the set value, the controller 50 does not issue a control command to the frequency converter, and the cutting wheel 301 maintains its existing cutting speed.

[0067] The frequency converter can precisely adjust the speed of the cutting motor 302 according to the instructions issued by the controller 50. The cutting motor 302 is connected to a reduction gearbox 303. The cutting motor 302 has a strong power output and can adjust its speed according to the instructions of the frequency converter. The power of the cutting motor 302 is smoothly transmitted to the cutting wheel 301 through the transmission mechanism, thereby adjusting the cutting speed of the cutting wheel 301. The transmission mechanism can be a chain and gear mechanism or a belt and pulley mechanism, and the configuration of the transmission mechanism is existing technology.

[0068] The frequency of the self-adjusting pelletizer is set according to the specific working conditions.

[0069] Example 5:

[0070] To prevent material from entering the metering chamber 402 when the metering component is not in operation, a movable and lockable protective plate 405 is provided on the top of the metering chamber 402. The protective plate 405 is a flat plate, and its area is larger than the area of ​​the top opening of the metering chamber 402. By controlling the movement of the protective plate 405, the setting state of the top of the metering chamber 402 can be changed.

[0071] The protective plate 405 is horizontally positioned, and a third drive unit is connected to the protective plate 405, capable of driving its horizontal movement and locking. The third drive unit is connected to the control output terminal of the controller 50. The third drive unit can be an autonomous telescopic component such as a cylinder or an electric telescopic rod. The third drive unit is horizontally positioned, with its fixed end fixed to the inner wall of the discharge outlet and its telescopic end fixed to the protective plate 405. The controller 50 controls the extension and retraction of the third drive unit, which can drive the protective plate 405 to move.

[0072] When the metering component is in operation, the third drive unit shortens, causing the protective plate 405 to move away from the metering chamber 402, ensuring the top of the metering chamber 402 is unobstructed and allowing materials to enter smoothly for weighing. When the metering component is not in operation, the third drive unit extends, causing the protective plate 405 to move closer to the metering chamber 402 and eventually to the top of the metering chamber 402, blocking its top and preventing materials from entering.

[0073] Example 6:

[0074] Above the metering chamber 402, a guide plate 406 is also provided. The upper end of the guide plate 406 is located at the outer edge of the discharge port 102 of the pelletizing hopper 10, and the lower end of the guide plate 406 is located above the metering chamber 402. The front and rear ends of the guide plate 406 are connected to the front and rear sides of the discharge hopper 20. The guide plate 406 is fixedly installed. When the discharge baffle 401 swings to the right side of the discharge port 102, the discharge baffle 401 and the guide plate 406 are inclined in opposite directions, and the two cooperate to form a funnel-shaped structure. The metering chamber 402 is located at the bottom of the funnel-shaped structure, which allows all the material to fall into the metering chamber 402, improving the accuracy of measurement.

[0075] This self-adjusting speed pelletizer brings many significant benefits:

[0076] First, it effectively solves the problem of uneven particle size caused by uneven extrusion speed, greatly improving product quality. The produced particle size is more uniform and consistent, resulting in better physical properties and appearance of subsequently processed plastic products, thus enhancing their competitiveness in the market.

[0077] Secondly, it significantly reduces labor costs. Traditional pelletizers require constant monitoring and frequent adjustments by workers, while this invention achieves automatic speed regulation, reducing reliance on manual intervention, lowering the labor intensity and work pressure of workers, and improving the automation level of the production process.

[0078] The above are merely preferred embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A self-regulating speed pelletizer, comprising: The pelletizing bin has a feed inlet and a discharge outlet, and a downward-facing discharge hopper is fixed on the discharge outlet; The pelletizing mechanism, located inside the pelletizing bin, includes a cutting wheel for pelletizing the material, and the cutting wheel is connected to a cutting motor that drives its rotation; Its characteristic is that it further includes: The monitoring mechanism, located inside the discharge hopper, includes a metering component and a discharge baffle. The discharge baffle can swing left and right. The metering component is located on the left or right side below the discharge baffle. The material guided by the discharge baffle can fall into the metering component for weight detection. Speed ​​control mechanism, including a frequency converter connected to the cutting motor; and The control mechanism includes a controller, the signal input terminal of which is connected to a metering component and a timer, and the control output terminal is connected to a frequency converter and a discharge baffle.

2. The self-regulating speed pelletizer according to claim 1, characterized in that, The lower end of the discharge baffle is swayably fixed inside the discharge hopper via the first rotating shaft; The first rotating shaft is connected to a first driving unit that drives its rotation. The first driving unit is connected to the control output terminal of the controller and is used to control the upper end of the discharge baffle to swing back and forth and lock. The front and rear ends of the discharge baffle can slide in contact with the front and rear sides of the discharge hopper, respectively.

3. The self-regulating speed pelletizer according to claim 2, characterized in that, The front and rear ends of the discharge baffle are covered with rubber strips.

4. The self-regulating speed pelletizer according to claim 1, characterized in that, The metering component includes: A metering chamber, fixed to one side below the discharge baffle, has an open top and a hinged bottom that can be flipped open downwards; and The weighing scale is fixed to the upper surface of the flip plate.

5. The self-regulating speed pelletizer according to claim 4, characterized in that, The flap is rotatably fixed to the bottom of the metering chamber via a second rotating shaft. The second rotating shaft is connected to a second driving unit that drives its rotation. The second driving unit is connected to the control output terminal of the controller.

6. The self-regulating speed pelletizer according to claim 4, characterized in that, The top of the metering chamber is equipped with a movable and lockable protective plate that can shield the top of the metering chamber.

7. The self-regulating speed pelletizer according to claim 6, characterized in that, The protective plate is horizontally arranged, and a third drive unit is connected to the protective plate, which can drive it to move horizontally and lock it. The third drive unit is connected to the control output terminal of the controller.

8. The self-regulating speed pelletizer according to claim 4, characterized in that, A guide plate is provided above the metering bin. The upper end of the guide plate is located at the outer edge of the discharge port of the pelletizing bin, and the lower end of the guide plate is located above the metering bin. The front and rear ends of the guide plate are connected to the front and rear sides of the discharge hopper.

9. The self-regulating speed pelletizer according to claim 1, characterized in that, The pelletizing mechanism further includes: Upper pressure roller; and The lower pressure roller is located below the upper pressure roller; A fourth drive unit is connected to the upper or lower pressure roller to drive its rotation; A conveying channel is formed between the upper and lower pressure rollers to allow material to pass through. The inlet end of the conveying channel is connected to the feed inlet of the pelletizing bin. The cutting wheel is located at the outlet end of the conveying channel. Baffles are provided on both sides of the conveying channel.

10. The self-regulating speed pelletizer according to claim 1, characterized in that, The pelletizing bin is equipped with a rotatable strip roller at the feed inlet.

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