A high efficiency pelletizer with drying mechanism

Abstract

This utility model discloses a high-efficiency pelletizer with a drying mechanism, relating to the field of pelletizer technology. It includes a chassis, with equidistantly distributed support frames fixedly connected to the top of the chassis, arranged in pairs. A mounting ring is fixedly connected between the two support frames. Both the support frames and the mounting ring have openings in the middle. The mounting ring has radially distributed sliding holes inside, and a sliding rod is slidably connected inside each sliding hole. A pulley is rotatably connected to one end of the sliding rod near the center line of the mounting ring. The sliding rods are radially distributed. This high-efficiency pelletizer with a drying mechanism, through the annular structure composed of radially distributed sliding rods and pulleys, combined with the synchronous groove design of the adjusting ring sleeve, achieves adaptive adjustment for materials of different sizes. The automatic reset structure composed of a torsion spring and a reset gear ensures that the sliding rods always maintain an appropriate clamping force on the material, preventing material deviation due to unstable clamping force during processing.

Description

Technical Field

[0001] This utility model relates to the field of pelletizer technology, specifically a high-efficiency pelletizer with a drying mechanism. Background Technology

[0002] A high-efficiency pelletizer with a drying mechanism is a device that combines pelletizing and drying functions. It is mainly used to process materials into pellets while simultaneously drying them, and is suitable for industries such as pharmaceuticals, food, and chemicals.

[0003] For example, Chinese patent CN209832292U discloses a plastic pellet extrusion and pelletizing dryer, including a drying chamber, a material guiding mechanism, and a moving circulation mechanism. A support base is fixedly installed at the bottom of the drying chamber, an inlet is installed on one side of the top of the drying chamber, and an outlet is opened at the bottom of the drying chamber. The material guiding mechanism is installed inside the drying chamber, including a first guide plate and a second guide plate. The second guide plate is fixedly installed inside the drying chamber at the bottom of the first guide plate. Both the first and second guide plates are inclined, and their inclination angles are opposite. A moving circulation mechanism is installed at the top inside the drying chamber. Internal circulation heating reduces heat loss, ensuring drying temperature and efficiency. Moving heating within the drying chamber ensures more even heating and drying, increases drying time and drying path, and, in conjunction with the moving circulation mechanism, improves the drying effect.

[0004] Existing technologies have poor adaptability to materials of different sizes during operation, resulting in poor efficiency and effectiveness when processing diverse raw materials. Traditional pelletizers usually need to be used in conjunction with separate drying equipment, which can lead to a decrease in overall production efficiency and an increase in energy consumption. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency pelletizer with a drying mechanism to solve the problem in the background art of poor adaptability to materials of different sizes, resulting in poor efficiency and effectiveness when processing diverse raw materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency pelletizer with a drying mechanism, including a chassis, wherein a support frame is fixedly connected to the top of the chassis at equal intervals, and the support frame is set in a group of two; A mounting ring is fixedly connected between the two support frames. Both the support frame and the mounting ring have openings in the middle. The mounting ring has radially distributed sliding holes inside. A sliding rod is slidably connected inside each sliding hole. A pulley is rotatably connected to one end of the sliding rod near the center line of the mounting ring. The sliding rods are radially distributed. A material transport structure is provided at one end of the chassis.

[0007] Preferably, an adjusting ring sleeve is rotatably connected to the outside of the mounting ring. The adjusting ring sleeve is located between the two support frames of each group. The adjusting ring sleeve has inclined and equally spaced annular synchronization grooves on both sides. The end of the slide rod away from the pulley extends to the outside of the mounting ring. Guide rods are fixedly connected to both sides of the end located on the outside of the mounting ring. The guide rods are slidably connected inside the synchronization grooves.

[0008] Preferably, the distance difference between the two ends of the synchronization groove and the center line of the mounting ring is equal to the sliding distance of the slide rod inside the sliding hole. A gear ring is fixedly connected to the outside of the adjusting ring sleeve, and a reset gear is meshed at the bottom of the gear ring. The reset gear is rotatably connected to the middle of the bottom of the two support frames.

[0009] Preferably, the reset gear is located between each set of support frames, and each reset gear is connected to each other through a connecting rod to form synchronization. Torsion springs are fixedly connected to both sides of the reset gear and between the two support frames, and the torsion springs are sleeved on the outside of the connecting rod.

[0010] Preferably, each set of support frames is fixedly connected to a protective sleeve, and the protective sleeve is fixedly connected to an equidistant air guide pipe. The air guide pipe has openings on both sides that communicate with the inside of the protective sleeve, and the protective sleeve has evenly distributed exhaust holes on the outside.

[0011] Preferably, an electric heating wire is fixedly connected between every two adjacent air guide pipes. The electric heating wires are distributed in a continuous S-shaped structure inside the protective sleeve. An equidistant air inlet pipe is fixedly connected to the bottom of the protective sleeve. Each air inlet pipe communicates with the inside of the air guide pipe and is connected to an external air supply device.

[0012] Preferably, the transport structure includes a fixed frame fixedly connected to one end of the chassis, and a set of support frames is provided on the side of the fixed frame away from the chassis. An adjusting ring sleeve installed between the two support frames is fixedly connected to a worm gear ring on its outer side. A worm is engaged at the bottom of the worm gear ring, and the worm is rotatably connected between the two support frames. The opening in the middle of the support frame forms a discharge port.

[0013] Preferably, the fixed frame has two guide grooves symmetrically distributed on both sides. A first slider and a second slider are slidably connected inside the two guide grooves respectively. The first slider and the second slider are slidably connected inside the guide groove on the same side. A feeding roller is rotatably connected between the first slider and the second slider. A bevel gear sleeve is rotatably connected to one end of the first slider. A transmission bevel gear is fixedly connected to the end of the feeding roller after passing through the first slider. The transmission bevel gear and the bevel gear sleeve mesh with each other.

[0014] Preferably, the fixed frame is rotatably connected to a drive rod driven by a motor on one side of the first slider. The outer side of the drive rod is a polygonal structure. The bevel gear sleeve has a polygonal opening in the middle. The bevel gear sleeve is slidably connected to the outer side of the drive rod through the opening. The bevel gear sleeve and the first slider move synchronously and vertically.

[0015] Preferably, a sliding sleeve is fixedly connected to the side of the fixed frame away from the first slider, and a synchronous gear is rotatably connected to the middle of the side of the fixed frame away from the first slider. Two racks that are rotationally symmetrical around the synchronous gear are slidably connected inside the sliding sleeve. The ends of the racks are connected to the second sliders. The two racks mesh with the outside of the synchronous gear to form a synchronous structure. A tension spring is fixedly connected between the two second sliders. A cutting motor is fixedly connected to one side of the fixed frame, and radially distributed cutting blades are fixedly connected to the output end of the cutting motor. The cutting blades completely cover the discharge port.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This high-efficiency pelletizer with a drying mechanism uses a ring structure composed of radially distributed slide bars and pulleys, combined with a synchronous groove design of the adjusting ring sleeve, to achieve adaptive adjustment for materials of different sizes. The automatic reset structure composed of torsion springs and reset gears ensures that the slide bars always maintain an appropriate clamping force on the material, preventing material deviation caused by unstable clamping force during material processing.

[0017] The drying system, consisting of air ducts and heating wires inside the protective sleeve, along with evenly distributed exhaust holes, achieves uniform heating and drying of materials. Through the cooperation of sliders and synchronous gears, the conveying rollers can automatically adapt to materials of different thicknesses, improving the equipment's adaptability to different materials. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the support frame of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the protective sleeve of this utility model; Figure 4 This is a schematic diagram of the adjusting ring structure of this utility model; Figure 5 This is a schematic diagram of the fixed frame structure of this utility model; Figure 6 This is a schematic diagram of the rack structure of this utility model; Figure 7 This is a schematic diagram of the exploded structure of the feed roller of this utility model.

[0019] In the diagram: 1. Chassis; 2. Support frame; 3. Mounting ring; 4. Sliding hole; 5. Sliding rod; 6. Pulley; 7. Adjusting ring sleeve; 8. Synchronizing groove; 9. Guide rod; 10. Gear ring; 11. Reset gear; 12. Torsion spring; 13. Protective sleeve; 14. Air duct; 15. Air inlet pipe; 16. Exhaust port; 17. Heating wire; 18. Fixing frame; 19. Worm gear ring; 20. Worm; 21. Guide groove; 22. First slider; 23. Second slider; 24. Feeding roller; 25. Bevel gear sleeve; 26. Drive rod; 27. Transmission bevel gear; 28. Sliding sleeve; 29. ​​Rack; 30. Tension spring; 31. Synchronizing gear; 32. Cutting motor; 33. Cutting blade. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1 - Figure 4This utility model provides the following technical solution: A high-efficiency pelletizer with a drying mechanism includes a chassis 1, with equidistantly distributed support frames 2 fixedly connected to the top of the chassis 1, the support frames 2 being arranged in groups of two; an installation ring 3 is fixedly connected between the two support frames 2, and both the support frames 2 and the installation ring 3 have openings in the middle, the installation ring 3 has radially distributed sliding holes 4 inside, each sliding hole 4 has a sliding rod 5 slidably connected inside, the end of the sliding rod 5 near the center line of the installation ring 3 is rotatably connected to a pulley 6, the sliding rods 5 are radially distributed, and one end of the chassis 1 has a material transport structure; an adjusting ring sleeve 7 is rotatably connected to the outside of the installation ring 3, the adjusting ring sleeve 7 is located between the two support frames 2 in each group, the adjusting ring sleeve 7 has inclined and annularly distributed synchronous grooves 8 on both sides, the end of the sliding rod 5 away from the pulley 6 extends to the outside of the installation ring 3, and the two sides of the end of the sliding rod 5 located on the outside of the installation ring 3 are fixedly connected to guide rods 9, the guide rods 9 are slidably connected inside the synchronous grooves 8; the distance difference between the two ends of the synchronous groove 8 and the center line of the installation ring 3 is equal to the distance of the sliding rod 5 inside the sliding hole 4. The sliding distance is adjusted by a gear ring 10 fixedly connected to the outer side of the adjusting ring sleeve 7. A reset gear 11 meshes with the bottom of the gear ring 10. The reset gear 11 is rotatably connected to the middle of the bottom of the two support frames 2. The reset gear 11 is located between each set of support frames 2. Each reset gear 11 is interconnected by a connecting rod to form synchronization. Torsion springs 12 are fixedly connected to both sides of the reset gear 11 and between the two support frames 2. The torsion springs 12 are sleeved on the outer side of the connecting rod. A protective sleeve 13 is fixedly connected between each set of support frames 2. The protective sleeve 13 is fixedly connected with equidistant air guide pipes 14. The air guide pipes 14 have openings on both sides that communicate with the inside of the protective sleeve 13. The protective sleeve 13 has evenly distributed exhaust holes 16 on the outside. A heating wire 17 is fixedly connected between every two adjacent air guide pipes 14. The heating wires 17 are distributed in a continuous S-shaped structure on the inside of the protective sleeve 13. The bottom of the protective sleeve 13 is fixedly connected with equidistant air inlet pipes 15. Each air inlet pipe 15 communicates with the inside of the air guide pipe 14. The air inlet pipe 15 is connected to an external air supply device.

[0022] When the material first enters the device through the long strip material transport structure, the inner side of the annular structure formed by the pulley 6 supported by the long strip material slide bar 5 allows the material to move smoothly; the mounting ring 3 is fixed between the two support frames 2, and its structure allows the slide bar 5 to move radially in the sliding hole 4, thereby adjusting the position of the pulley 6 to accommodate long strip materials of different sizes.

[0023] The adjusting ring 7 is rotatably connected to the outside of the mounting ring 3 and controls the movement of the slide rod 5 through the inclined synchronous grooves 8 on both sides. The end of the slide rod 5 located outside the mounting ring 3 is fixed with a guide rod 9, which is slidably connected inside the synchronous groove 8. When the adjusting ring 7 rotates clockwise or counterclockwise, the inclined design of the synchronous groove 8 converts the rotational motion into the radial sliding motion of the slide rod 5. The movement of the guide rod 9 in the groove drives the slide rod 5 to extend and retract in the sliding hole 4, thereby changing the distance between the pulley 6 and the center line of the mounting ring 3. The difference in distance between the two ends of the synchronous groove 8 and the center line of the mounting ring 3 is equal to the maximum sliding distance of the slide rod 5, which meets the requirements of various material sizes and maintains a balanced state to prevent material deviation.

[0024] The torsion spring 12 is sleeved on the outside of the connecting rod. Its torque drives the reset gear 11 to rotate, so that the adjusting ring sleeve 7 always drives the slide rod 5 to move toward the center line of the mounting ring 3 through the synchronous groove 8. The ring structure formed by the supported pulley 6 clamps the material on the outside.

[0025] The protective sleeve 13 is fixedly connected between each set of support frames 2, forming a sealed space to enclose the material processing area; the air ducts 14 are evenly distributed and fixed inside the protective sleeve 13, and each air duct 14 has openings on both sides to allow internal airflow diffusion; air is introduced from the external air supply equipment through the air inlet pipe 15, and the air inlet pipe 15 is connected to the interior of the air duct 14 to form a continuous airflow path; the heating wire 17 has a continuous S-shaped structure, is fixedly connected between adjacent air ducts 14, and is tightly fitted to the air duct 14. When energized, the heating wire 17 heats up the air; the heated air enters the interior space of the protective sleeve 13 through the openings of the air duct 14, and is then evenly discharged through the exhaust port 16; the distribution design of the exhaust port 16 ensures that the hot airflow covers the surface of the material to carry out the drying operation.

[0026] Example 2: Based on Example 1, please refer to... Figure 4 - Figure 7The following structure is also disclosed: The transport structure includes a fixed frame 18 fixedly connected to one end of the chassis 1. A set of support frames 2 is provided on the side of the fixed frame 18 away from the chassis 1. An adjusting ring sleeve 7 installed between the two support frames 2 is fixedly connected to the outside of a worm gear ring 19. A worm 20 is meshed at the bottom of the worm gear ring 19. The worm 20 is rotatably connected between the two support frames 2. The opening in the middle of the support frame 2 forms a discharge port. Two guide grooves 21 are provided on both sides of the fixed frame 18, which are symmetrically distributed vertically. A first slider 22 and a second slider 23 are slidably connected inside the two guide grooves 21, respectively. The first slider 22 and the second slider 23 are slidably connected inside the guide groove 21 on the same side. A conveying roller 24 is rotatably connected between the first slider 22 and the second slider 23. A bevel gear sleeve 25 is rotatably connected to one end of the first slider 22. A transmission bevel gear 27 is fixedly connected to the end of the conveying roller 24 after passing through the first slider 22. The transmission bevel gear 27 and the bevel gear sleeve 25 mesh with each other. The fixed frame 18 is rotatably connected to a drive rod 26 driven by a motor on one side of the first slider 22. The outer side of the drive rod 26 is a polygonal structure. The bevel gear sleeve 25 has a polygonal opening in the middle. The bevel gear sleeve 25 is slidably connected to the outer side of the drive rod 26 through the opening. The bevel gear sleeve 25 and the first slider 22 move synchronously and vertically. A sliding sleeve 28 is fixedly connected to the side of the fixed frame 18 away from the first slider 22. A synchronous gear 31 is rotatably connected to the middle of the side of the fixed frame 18 away from the first slider 22. Two racks 29 that are rotationally symmetrical around the synchronous gear 31 are slidably connected inside the sliding sleeve 28. The ends of the racks 29 are connected to the second slider 23. The two racks 29 mesh with the outer side of the synchronous gear 31 to form a synchronous structure. A tension spring 30 is fixedly connected between the two second sliders 23. A cutting motor 32 is fixedly connected to one side of the fixed frame 18. A radially distributed cutting blade 33 is fixedly connected to the output end of the cutting motor 32. The cutting blade 33 completely covers the discharge port.

[0027] The material transport structure is fixed at one end of the chassis 1, including a fixed frame 18, which serves as the base of the overall conveying system. When the material arrives at the fixed frame 18 after drying, it is clamped by the conveying rollers 24. The conveying rollers 24 are rotatably connected between the first slider 22 and the second slider 23, and their rotational motion drives the material to move linearly. The bevel gear sleeve 25, which is rotatably connected to one end of the first slider 22, is slidably connected to the outside of the drive rod 26 through an internal polygonal opening. The drive rod 26 is driven by an external motor. The polygonal structure of the drive rod 26 allows the bevel gear sleeve 25 to remain coupled when it moves vertically with the slider, ensuring that the power transmission is uninterrupted. The transmission bevel gear 27 is fixed to the end of the conveying roller 24 and meshes with the bevel gear sleeve 25, converting the rotation of the drive rod 26 into the rotation of the conveying roller 24, thereby propelling the material toward the cutting area.

[0028] The opening in the middle of the support frame 2 forms the discharge port, where the material is processed by the cutting motor 32. The cutting motor 32 is fixed to one side of the fixed frame 18, and its output end is connected to radially distributed cutting blades 33. The cutting blades 33 cover the entire discharge port, ensuring that the material is evenly cut into particles when it passes through. The worm gear ring 19 is fixedly connected to the outside of the adjusting ring sleeve 7 and meshes with the worm 20. The worm 20 is rotatably connected between the two support frames 2. When the adjusting ring sleeve 7 rotates, the worm gear ring 19 drives the worm 20 to rotate. The movement of the worm 20 can adjust the clamping force of the pulley 6 installed in the adjusting ring sleeve 7 on the material, thereby fixing the material during cutting.

[0029] The slider system and synchronization structure ensure stable material path; a sliding sleeve 28 is provided on the side of the fixed frame 18 away from the first slider 22, and two racks 29 are slidably connected inside it; the racks 29 are arranged in a rotationally symmetrical layout around the synchronization gear 31, which is rotatably connected to the middle of the fixed frame 18; the ends of the racks 29 are connected to the second sliders 23 and mesh with the synchronization gear 31; a tension spring 30 is fixed between the two second sliders 23 to provide elastic tension; when the first slider 22 moves vertically, the drive rod 26 drives the bevel gear sleeve 25, causing the second sliders 23 to move synchronously through the interaction of the racks 29 and the synchronization gear 31; this design allows all sliders to work in coordination, prevents the end of the feed roller 24 from tilting, and if the material thickness changes, the slider automatically adjusts its vertical position, and the tension spring 30 absorbs the deviation to ensure uniform pressure on the feed roller 24; at the same time, the cutting blade 33 performs a cutting action by high-speed rotation driven by a motor when the material reaches the discharge port.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency pelletizer with a drying mechanism, comprising a chassis (1), wherein the top of the chassis (1) is fixedly connected with equidistantly distributed support frames (2), and the support frames (2) are arranged in groups of two; Its features are: An installation ring (3) is fixedly connected between the two support frames (2). Both the support frame (2) and the installation ring (3) have openings in the middle. The installation ring (3) has radially distributed sliding holes (4) inside. Each sliding hole (4) is slidably connected to a sliding rod (5). The end of the sliding rod (5) near the center line of the installation ring (3) is rotatably connected to a pulley (6). The sliding rod (5) is radially distributed. One end of the chassis (1) is provided with a material transport structure.

2. The high-efficiency pelletizer with a drying mechanism according to claim 1, characterized in that: An adjusting ring sleeve (7) is rotatably connected to the outside of the mounting ring (3). The adjusting ring sleeve (7) is located between the two support frames (2) of each group. The adjusting ring sleeve (7) has inclined and equally spaced synchronous grooves (8) on both sides. The end of the slide rod (5) away from the pulley (6) extends to the outside of the mounting ring (3). Guide rods (9) are fixedly connected to both sides of the end of the slide rod (5) located outside the mounting ring (3). The guide rods (9) are slidably connected inside the synchronous grooves (8).

3. A high-efficiency pelletizer with a drying mechanism according to claim 2, characterized in that: The difference in distance between the two ends of the synchronization groove (8) and the center line of the mounting ring (3) is equal to the sliding distance of the slide rod (5) inside the sliding hole (4). A gear ring (10) is fixedly connected to the outside of the adjusting ring sleeve (7). A reset gear (11) is meshed at the bottom of the gear ring (10). The reset gear (11) is rotatably connected to the middle of the bottom of the two support frames (2).

4. A high-efficiency pelletizer with a drying mechanism according to claim 3, characterized in that: The reset gear (11) is located between each set of support frames (2). Each reset gear (11) is connected to each other through a connecting rod to form synchronization. Torque springs (12) are fixedly connected to both sides of the reset gear (11) and between the two support frames (2). The torsion springs (12) are sleeved on the outside of the connecting rod.

5. A high-efficiency pelletizer with a drying mechanism according to claim 1, characterized in that: Each set of support frames (2) is fixedly connected with a protective sleeve (13). The protective sleeve (13) is fixedly connected with equidistant air guide pipes (14). The air guide pipes (14) have openings on both sides that communicate with the inside of the protective sleeve (13). The protective sleeve (13) has evenly distributed exhaust holes (16) on the outside.

6. A high-efficiency pelletizer with a drying mechanism according to claim 5, characterized in that: A heating wire (17) is fixedly connected between every two adjacent air ducts (14). The heating wire (17) is distributed in a continuous S-shaped structure inside the protective sleeve (13). An air inlet pipe (15) is fixedly connected to the bottom of the protective sleeve (13). Each air inlet pipe (15) is connected to the inside of the air duct (14). The air inlet pipe (15) is connected to the external air supply equipment.

7. A high-efficiency pelletizer with a drying mechanism according to claim 1, characterized in that: The transport structure includes a fixed frame (18) fixedly connected to one end of the chassis (1). A set of support frames (2) is provided on the side of the fixed frame (18) away from the chassis (1). An adjusting ring sleeve (7) installed between the two support frames (2) is fixedly connected to the outside of a worm gear ring (19). A worm (20) is engaged at the bottom of the worm gear ring (19). The worm (20) is rotatably connected between the two support frames (2). The opening in the middle of the support frame (2) forms a discharge port.

8. A high-efficiency pelletizer with a drying mechanism according to claim 7, characterized in that: The fixed frame (18) has two guide grooves (21) symmetrically distributed on both sides. The first slider (22) and the second slider (23) are slidably connected inside the two guide grooves (21). The first slider (22) and the second slider (23) are slidably connected inside the guide groove (21) on the same side. A feeding roller (24) is rotatably connected between the first slider (22) and the second slider (23). A bevel gear sleeve (25) is rotatably connected to one end of the first slider (22). A transmission bevel gear (27) is fixedly connected to the end of the feeding roller (24) after passing through the first slider (22). The transmission bevel gear (27) and the bevel gear sleeve (25) mesh with each other.

9. A high-efficiency pelletizer with a drying mechanism according to claim 8, characterized in that: The fixed frame (18) is rotatably connected to a drive rod (26) driven by a motor on one side of the first slider (22). The drive rod (26) has a polygonal structure on the outside. The bevel gear sleeve (25) has a polygonal opening in the middle. The bevel gear sleeve (25) is slidably connected to the outside of the drive rod (26) through the opening. The bevel gear sleeve (25) and the first slider (22) move vertically in sync.

10. A high-efficiency pelletizer with a drying mechanism according to claim 9, characterized in that: A sliding sleeve (28) is fixedly connected to the side of the fixed frame (18) away from the first slider (22). A synchronous gear (31) is rotatably connected to the middle of the side of the fixed frame (18) away from the first slider (22). Two racks (29) that are rotationally symmetrical around the synchronous gear (31) are slidably connected inside the sliding sleeve (28). The ends of the racks (29) are connected to the second slider (23). The two racks (29) mesh with the outside of the synchronous gear (31) to form a synchronous structure. A tension spring (30) is fixedly connected between the two second sliders (23). A cutting motor (32) is fixedly connected to one side of the fixed frame (18). A radially distributed cutting blade (33) is fixedly connected to the output end of the cutting motor (32). The cutting blade (33) completely covers the discharge port.

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