Vertical underwater granulator

Abstract

The invention relates to a vertical underwater granulator, and relates to the field of extruders. The upper end of the rack is provided with a die head, the die head is used for being connected with a discharging port of the extruder, the rack is vertically provided with a lifting seat in a sliding mode, the rack is provided with a first driving assembly used for controlling the lifting seat to ascend and descend, the lifting seat end is provided with a cutting bin, the cutting bin is provided with a feeding port used for being matched with the die head, and a cutter head is arranged in the cutting bin; a second driving assembly used for controlling the cutter head to rotate is arranged on the lifting base, a water inlet and a discharging outlet are formed in the cutting bin, the water inlet is used for being connected with a cooling water inlet pipe, and the discharging outlet is used for discharging cooling water and materials. The floor area of equipment can be reduced, and the space utilization rate of a workshop is increased.

Description

Technical Field

[0001] The invention relates to the field of extruders, in particular to a vertical underwater pelletizer. Background Art

[0002] In the production of polymer materials like plastics and rubber, pelletizing is a crucial step. It cuts the continuous strands of material extruded from the extruder into uniform pellets for storage, transportation, and further processing. Traditional pelletizing equipment typically utilizes a horizontal structure. While this structure can meet basic pelletizing needs to a certain extent, it has many shortcomings.

[0003] Horizontal pelletizing equipment occupies a large area. In modern production workshops, space resources are often very valuable, and limited space must be used rationally and efficiently. However, due to its horizontal layout, horizontal pelletizing equipment requires a longer horizontal space for installation and operation, which is not conducive to workshop space utilization and increases site costs. Summary of the Invention

[0004] In order to reduce the floor space occupied by the equipment and improve the space utilization rate of the workshop, the present invention provides a vertical underwater pelletizer.

[0005] The present invention provides a vertical underwater pelletizer adopting the following technical solutions: A vertical underwater pelletizer comprises a frame, a die head is provided at the upper end of the frame, the die head is used to connect to the discharge port of an extruder, a lifting seat is provided on the frame for vertical sliding, a first drive component for controlling the lifting of the lifting seat is provided on the frame, a cutting bin is provided at the end of the lifting seat, a feed port for cooperating with the die head is provided on the cutting bin, a knife disc is provided in the cutting bin, a second drive component for controlling the rotation of the knife disc is provided on the lifting seat, a water inlet and a discharge port are provided on the cutting bin, the water inlet is used to connect to the cooling water inlet pipe, and the discharge port is used to discharge cooling water and materials.

[0006] By adopting the above technical solution, the vertical underwater pelletizer, with its adjustable cutting bin, achieves flexible docking with the die head, facilitating adaptation to different extruder discharge heights. A knife disc and cooling water system within the bin effectively pelletize and cool the extruded material, improving pelletizing efficiency and quality. The vertical water-ring pelletizing structure reduces the equipment's footprint and improves workshop space utilization.

[0007] Optionally, the cutting bin is cylindrical, the feed port and the cutter disc are located at one axial end of the cutting bin, a spiral flow channel is provided on the inner wall of the cutting bin, the water inlet and the discharge port are both provided on the circumferential surface of the cutting bin and are connected to the interior of the cutting bin, and the flow directions of the water inlet and the discharge port are parallel to and tangent to the spiral trajectory of the flow channel.

[0008] By adopting the above technical solution, the spiral flow channel design in the cutting bin enables the cooling water to form a spiral flow in the cutting bin, increasing the contact area and time between the cooling water and the material, and improving the cooling effect; the water inlet and discharge port flow directions are parallel to the tangent of the spiral flow channel, further optimizing the flow path of the cooling water and ensuring uniform cooling.

[0009] Optionally, a waste hopper is provided on the frame, a guide plate is movably provided on the waste hopper, and a control component is provided on the frame, and the control component is used to control the guide plate to extend into or out of the bottom of the die head.

[0010] By adopting the above technical solution, the waste hopper and movable guide plate design make it possible to quickly guide waste or unqualified materials into the waste hopper when needed, avoiding contamination of the production line or affecting the pelletizing quality; the setting of the control component makes the movement of the guide plate more automated and precise.

[0011] Optionally, the waste hopper is provided with a first slide rail, one end of the first slide rail is connected to a second slide rail, and the first slide rail and the second slide rail are arranged at an angle, and the guide plate is provided with a first rotating shaft and a second rotating shaft parallel to each other, wherein the first rotating shaft is slidably arranged in the first slide rail, and the first rotating shaft is slidably arranged in the first slide rail and the second slide rail; When the first rotating shaft and the second rotating shaft are both located in the first slide rail, the guide plate is located outside the frame and slides toward or away from the die head; when the second rotating shaft enters the second slide rail, the guide plate tilts toward the bottom of the die head.

[0012] By adopting the above technical solution, the angle setting of the first slide rail and the second slide rail and the sliding cooperation of the first rotating shaft and the second rotating shaft on the guide plate can realize the telescopic control of the guide plate, which facilitates the accurate diversion of waste or unqualified materials into the waste hopper.

[0013] Optionally, the control component includes two transmission wheels installed on the waste hopper, a belt is wound between the two transmission wheels, a slide is fixedly connected to the belt, the slide is slidably set on the waste hopper, the first rotating shaft passes through and is rotatably connected to the slide, one of the transmission wheels is provided with a gear, and a rack meshing with the gear is fixedly connected to the lifting seat.

[0014] By adopting the above technical solution, the control component realizes the linkage between the movement of the guide plate and the lifting of the lifting seat through the cooperation of the transmission wheel, belt, slide and rack, so that when the lifting seat descends, the guide plate can be extended to the bottom of the die head through the linkage, achieving the effect of waste receiving and diverting, and improving the degree of automation and ease of operation of the equipment.

[0015] Optionally, a locking bolt is provided through the gear, and the locking bolt is threadedly connected to the corresponding transmission wheel.

[0016] By adopting the above technical solution, the gear and the transmission wheel are connected by a locking bolt, thereby realizing the linkage between the lifting seat and the guide plate, or releasing the linkage between the lifting seat and the guide plate.

[0017] Optionally, anti-slip grooves are provided on the opposing surfaces of the gear and the corresponding transmission wheel, and a friction pad is provided between the gear and the corresponding transmission wheel, and the friction pad is used to increase the friction between the gear and the corresponding transmission wheel.

[0018] By adopting the above technical solution, the provision of anti-skid grooves and friction pads increases the friction between the gear and the transmission wheel, ensuring stability and reliability during the transmission process; at the same time, the friction pads also play a role in buffering and shock absorption, extending the service life of the equipment.

[0019] Optionally, the first rotating shaft is rotatably connected to the guide plate, and two first rotating shafts are provided on the guide plate, and a first conveyor belt is wound between the two first rotating shafts; The waste hopper is rotatably connected to two groups of first pulleys, and the slide is provided with two second pulleys, one of the first pulleys is coaxially fixedly connected to the first rotating shaft on the slide, and the other second pulley is rotatably connected to the slide, and a transmission belt is wound around the first pulley and the second pulley to realize transmission, and the waste hopper is fixedly connected to a drive motor for driving one of the first pulleys to rotate.

[0020] By adopting the above technical solution, the first conveyor belt, the first pulley, the drive motor, the transmission belt and the second pulley cooperate to realize transmission, so that during the movement of the guide plate, the drive motor can always drive the first rotating shaft to rotate and drive the first conveyor belt to operate.

[0021] Optionally, the bottom wall of the waste hopper is rotatably connected to two rotating rollers, a second conveyor belt is wound between the two rotating rollers, one of the rotating rollers passes through the waste hopper, and one of the second pulleys is coaxially fixedly connected to the end of one of the rotating rollers.

[0022] By adopting the above technical solution, the setting of the second conveyor belt and the rotating roller enables the waste or unqualified materials in the waste hopper to be discharged smoothly to the designated location, reducing the accumulation and blockage of waste in the waste hopper; at the same time, the coaxial fixed connection between the second pulley and the rotating roller realizes the simplified design and efficient operation of the transmission system.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The vertical underwater pelletizer adopts a vertical structural design, with the die head, cutting bin and other major components arranged vertically, greatly reducing the equipment's horizontal footprint. This design allows more production equipment to be installed in a workshop of the same area, improving workshop space utilization, saving site costs for the company, and also facilitating overall planning and layout optimization of the production workshop. 2. A waste hopper is provided on the machine frame, and a guide plate is movably provided on the waste hopper. A control component is provided on the machine frame to control the guide plate to extend into or out of the bottom of the die head. During the pelletizing process, when unqualified materials or waste materials appear, the control component can promptly extend the guide plate into the bottom of the die head and accurately guide the waste materials into the waste hopper, thus preventing the waste materials from being scattered around the equipment and keeping the production site clean and tidy. 3. A first rotating shaft and a first conveyor belt are provided on the guide plate to guide the waste while also reducing the accumulation of waste on the guide plate; 4. A rotating roller and a second conveyor belt are set at the bottom of the waste hopper to reduce the accumulation and blockage of waste in the waste hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present invention.

[0025] Figure 2 It is an exploded view of the first drive assembly and the second drive assembly according to the first embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the overall structure of Example 2 of the present invention.

[0027] Figure 4 It is an exploded view of the control component according to the second embodiment of the present invention.

[0028] Figure 5 This is an exploded view of a waste hopper according to embodiment 2 of the present invention.

[0029] Figure 6 This is an exploded view of the first slide rail and the second slide rail according to the second embodiment of the present invention.

[0030] Figure 7 It is a cross-sectional view of the first conveyor belt and the second conveyor belt according to the second embodiment of the present invention.

[0031] Explanation of the accompanying drawings: 1. Frame; 11. Die head; 12. Lifting seat; 13. First drive assembly; 2. Cutting bin; 21. Feed port; 22. Water inlet; 23. Discharge port; 24. Cutter disc; 25. Second drive assembly; 3. Waste hopper; 31. Receiving port; 32. Discharge port; 33. Guide plate; 34. First slide rail; 35. Second slide rail; 36. First rotating shaft; 37. Second rotating shaft; 38. First conveyor roller; 39. First conveyor belt; 41. Drive wheel; 42. Belt; 43. Rack; 44. Gear; 45. Locking bolt; 47. Friction pad; 48. Slide; 51. Drive motor; 52. First pulley; 53. Second pulley; 54. Drive belt; 55. Rotating roller; 56. Second conveyor belt. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-7 The present invention is described in further detail.

[0033] The embodiment of the present invention discloses a vertical underwater pelletizer. Figure 1-2 The vertical underwater pelletizer includes a frame 1. A die head 11 for connecting to the discharge port of the extruder is fixedly connected to the upper end of the frame 1, and the discharge end of the die head 11 is set downward. A lifting seat 12 is vertically slidably provided on the frame 1, and the lifting seat 12 is located below the die head 11, and a first drive component 13 for driving the lifting seat 12 to rise and fall is installed on the frame 1. The first drive component 13 can adopt a motor, a reducer and a screw nut mechanism, and the lifting seat 12 is raised and lowered by the forward and reverse rotation of the motor. The lifting stroke of the lifting seat 12 can be adjusted according to the matching requirements of the die head 11 and the cutting bin 2. In an embodiment of the present invention, a cylinder is provided at the bottom of the frame 1, and the piston rod of the cylinder is set upward and fixedly connected to the lower end surface of the lifting seat 12.

[0034] The upper end of the lifting seat 12 is fixedly connected to the cutting bin 2, and the upper end of the cutting bin 2 is provided with a feed port 21 for cooperating with the die head 11. The cutting bin 2 is rotatably connected to a cutter disc 24 near the opening position, and the lifting seat 12 is provided with a second drive assembly 25 for driving the cutter disc 24 to rotate.

[0035] The cutting bin 2 is cylindrical, and a spiral flow channel is provided on the inner wall of the cutting bin 2 to guide the cooling water to form a uniform water ring. The cutter disc 24 is arranged in the cutting bin 2, below the feed port 21, and its rotation is controlled by the second drive assembly 25. The second drive assembly 25 can be directly driven by a motor or driven by a belt 42. In the embodiment of the present invention, a motor is provided on the lifting seat 12, and the motor is fixedly connected to the lower end of the cutting bin 2. The output shaft of the motor passes through the bottom wall of the cutting bin 2 and extends into the cutting bin 2, and is fixedly connected to the cutter disc 24 to control the rotation of the cutter disc 24.

[0036] The circumferential surface of the cutting bin 2 is provided with an inlet 22 and a discharge port 23. The inlet 22 is connected to the cooling water inlet pipe, and the discharge port 23 is used to discharge the cooling water and the cut material particles into the material dehydrator. The flow direction of the inlet 22 and the discharge port 23 are both parallel to the tangent line of the spiral flow channel to ensure that the cooling water can smoothly form a water ring.

[0037] The operating principle is as follows: the extruder pushes the molten material through the die head 11. The lifting base 12 drives the cutting bin 2 upward, allowing the die head 11 to be inserted into the feed port 21 of the cutting bin 2. Driven by the second drive assembly 25, the cutter head 24 rotates at high speed, cutting the extruded material into pellets. Simultaneously, cooling water enters the cutting bin 2 through the water inlet 22, forming a water ring that cools and transports the material before it is discharged through the discharge port 23.

[0038] Example 2 like Figure 3-4 This embodiment differs from Example 1 in that a waste hopper 3 is provided on the side wall of the frame 1 for collecting waste generated during the commissioning or maintenance of the extruder die head 11. The upper end of the waste hopper 3 is provided with a material receiving port 31, and the lower end of the waste hopper 3 is provided with a discharge port 32 for discharging the waste. A guide plate 33 is movably provided on the waste hopper 3. The guide plate 33 is controlled by a control component to extend or disengage from under the die head 11. When it is necessary to clean the die head 11 or replace the cutter disc 24, the guide plate 33 can be extended under the die head 11 to guide the waste into the waste hopper 3.

[0039] like Figure 5-6 The waste hopper 3 is provided with a first slide rail 34 and a second slide rail 35, wherein the first slide rail 34 is arranged vertically, and the lower end of the second slide rail 35 is connected to the upper end of the first slide rail 34. The end of the second slide rail 35 away from the first slide rail 34 is inclined toward the die head 11, and the first slide rail 34 and the second slide rail 35 are arranged at an angle.

[0040] The guide plate 33 is provided with a first rotating shaft 36 and a second rotating shaft 37 which are parallel to each other. One of the first rotating shafts 36 is slidably set in the first slide rail 34, and the second rotating shaft 37 is slidably set in the first slide rail 34 or the second slide rail 35. When the first rotating shaft 36 and the second rotating shaft 37 are both located in the first slide rail 34, the guide plate 33 is vertically set outside the frame 1. During the process of the first rotating shaft 36 and the second rotating shaft 37 sliding in the first slide rail 34, the guide plate 33 slides in the vertical direction toward or away from the die head 11. When the second rotating shaft 37 enters the second slide rail 35 and moves away from the first slide rail 34, the upper end of the guide plate 33 moves toward the bottom of the die head 11 and tilts, eventually forming a guide channel below the die head 11 for guiding the waste extruded by the die head 11 into the waste hopper 3.

[0041] like Figure 4-5 The control assembly includes two transmission wheels 41 that rotate on the side wall of the waste hopper 3. The two transmission wheels 41 are vertically spaced apart, with a belt 42 wound between them. A slide 48 is fixedly connected to the belt 42, and the slide 48 slides vertically on the outer wall of the waste hopper 3. The first rotating shaft 36 in the first slide rail 34 is rotatably connected to the slide 48 via a bearing. A rack 43 is fixedly connected to the lifting platform 12. A gear 44 is coaxially mounted on one of the transmission wheels 41, and the gear 44 and rack 43 are meshed with each other. The downward movement of the lifting platform 12 drives the gear 44 and the corresponding transmission wheel 41 to rotate synchronously, thereby driving the slide 48 upward via the belt 42. During this process, the first rotating shaft 36 and the second rotating shaft 37 in the first slide rail 34 move upward, driving the deflector 33 upward. When the second rotating shaft 37 enters the second slide rail 35 from the first slide rail 34, the deflector 33 tilts toward the bottom of the die head 11 during its upward movement.

[0042] Gear 44 is mounted on the corresponding transmission wheel 41 via a locking bolt 45. The locking bolt 45 coaxially passes through gear 44 and is threadedly connected to the corresponding transmission wheel 41. Anti-slip grooves are provided on the opposing surfaces of gear 44 and the corresponding transmission wheel 41. A friction pad 47 is provided on the locking bolt 45 between the gear 44 and the corresponding transmission wheel 41 to increase friction between the gear 44 and the corresponding transmission wheel 41. The operator tightens the locking bolt 45, clamping the friction pad 47 between the gear 44 and the corresponding transmission wheel 41, enabling relative rotation of the gear 44 and the transmission wheel 41. This causes the lifting platform 12 and the rack 43 to descend synchronously, driving the gear 44 and the transmission wheel 41 to rotate synchronously, thereby driving the belt 42 to move, thereby driving the slide 48 and the first rotating shaft 36 upward within the first slide rail 34. During this process, the guide plate 33 moves upward and tilts toward the bottom of the die head 11.

[0043] When the operator loosens the locking bolt 45, the transmission effect between the gear 44 and the corresponding transmission wheel 41 is released, thereby cutting off the linkage effect between the guide plate 33 and the lifting seat 12. The operator can control the lifting seat 12 to rise and fall independently, which is convenient for the operator to inspect and repair the cutting bin 2 and the die head 11.

[0044] like Figure 6-7 Two first rotating shafts 36 are provided on the guide plate 33. The two first rotating shafts 36 are mounted at both ends of the guide plate 33 in the direction of movement. The first rotating shafts 36 are rotatably connected to the guide plate 33. The second rotating shaft 37 is fixedly connected to the guide plate 33 and is located between the two first rotating shafts 36. A first conveyor roller 38 is fixedly connected to each of the two first rotating shafts 36, and a first conveyor belt 39 is wound between the two first conveyor rollers 38. The first conveyor belt 39 is used to transport waste material that falls on the guide plate 33 to the waste hopper 3.

[0045] like Figure 4 and Figure 6 The waste hopper 3 is provided with a drive mechanism for driving the first rotating shaft 36 to rotate. The drive mechanism includes two sets of first pulleys 52 rotatably connected to the outer wall of the waste hopper 3. The two sets of first pulleys 52 are spaced apart in the vertical direction. A drive motor 51 is fixedly connected to the waste hopper 3, and the output shaft of the drive motor 51 is fixedly connected to one of the first pulleys 52 via a coupling. The slide 48 is provided with two second pulleys 53, one of which is coaxially fixed to the end of the first rotating shaft 36 on the slide 48, and the other second pulley 53 is rotatably connected to the slide 48. A transmission belt 54 is wound around the two sets of first pulleys 52 and the two second pulleys 53. During the raising and lowering of the slide 48, the transmission belt 54 remains taut. The operator activates the drive motor 51 to rotate the corresponding first pulley 52, thereby driving the transmission belt 54 to move, thereby driving the two second pulleys 53 to rotate, thereby driving the first rotating shaft 36 on the slide 48 to rotate, achieving the driving effect of the first conveyor belt 39.

[0046] like Figure 4 and Figure 7 Two rotating rollers 55 are provided on the bottom wall of the waste hopper 3, and a second conveyor belt 56 is wound between the two rotating rollers 55. One end of the rotating roller 55 extends out of the waste hopper 3 and is fixedly connected to one of the second pulleys 53 coaxially. The operator drives the first conveyor belt 39 and the second conveyor belt 56 to rotate synchronously through the drive motor 51, so as to receive the waste discharged from the die head 11 and discharge the waste from the lower end of the waste hopper 3.

[0047] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical underwater pelletizer, characterized by: The invention comprises a frame (1), wherein a die head (11) is provided at the upper end of the frame (1), and the die head (11) is used to connect to the discharge port of the extruder; a lifting seat (12) is provided on the frame (1) for vertical sliding; a first driving component (13) for controlling the lifting of the lifting seat (12) is provided on the frame (1); a cutting bin (2) is provided at the end of the lifting seat (12); a feed port (21) for cooperating with the die head (11) is provided on the cutting bin (2); a cutter disc (24) is provided in the cutting bin (2); a second driving component (25) for controlling the rotation of the cutter disc (24) is provided on the lifting seat (12); a water inlet (22) and a discharge port (23) are provided on the cutting bin (2); the water inlet (22) is used to connect to the water inlet pipe of cooling water; and the discharge port (23) is used to discharge cooling water and materials.

2. A vertical underwater pelletizer according to claim 1, characterized in that: The cutting bin (2) is cylindrical, the feed port (21) and the cutter disc (24) are located at one axial end of the cutting bin (2), a spiral flow channel is provided on the inner wall of the cutting bin (2), the water inlet (22) and the discharge port (23) are both provided on the circumferential surface of the cutting bin (2) and are communicated with the interior of the cutting bin (2), and the flow directions of the water inlet (22) and the discharge port (23) are both parallel to and tangent to the spiral trajectory of the flow channel.

3. The vertical underwater pelletizer according to claim 1, characterized in that: A waste hopper (3) is provided on the frame (1), a guide plate (33) is movably provided on the waste hopper (3), and a control component is provided on the frame (1), the control component is used to control the guide plate (33) to extend into or out of the bottom of the die head (11).

4. A vertical underwater pelletizer according to claim 3, characterized in that: The waste hopper (3) is provided with a first slide rail (34), one end of the first slide rail (34) is connected to a second slide rail (35), and the first slide rail (34) and the second slide rail (35) are arranged at an angle, and the guide plate (33) is provided with a first rotating shaft (36) and a second rotating shaft (37) that are parallel to each other, wherein the first rotating shaft (36) is slidably arranged in the first slide rail (34), and the first rotating shaft (36) is slidably arranged in the first slide rail (34) and the second slide rail (35); When the first rotating shaft (36) and the second rotating shaft (37) are both located in the first slide rail (34), the guide plate (33) is located outside the frame (1) and slides toward or away from the die head (11); when the second rotating shaft (37) enters the second slide rail (35), the guide plate (33) tilts toward the bottom of the die head (11).

5. A vertical underwater pelletizer according to claim 4, characterized in that: The control assembly includes two transmission wheels (41) mounted on the waste hopper (3), a belt (42) is wound between the two transmission wheels (41), a slide (48) is fixedly connected to the belt (42), the slide (48) is slidably mounted on the waste hopper (3), the first rotating shaft (36) passes through and is rotatably connected to the slide (48), a gear (44) is provided on one of the transmission wheels (41), and a rack (43) meshing with the gear (44) is fixedly connected to the lifting seat (12).

6. The vertical underwater pelletizer according to claim 5, characterized in that: A locking bolt (45) is provided through the gear (44), and the locking bolt (45) is threadedly connected to the corresponding transmission wheel (41).

7. The vertical underwater pelletizer according to claim 6, characterized in that: Anti-slip grooves () are provided on the opposing surfaces of the gear (44) and the corresponding transmission wheel (41), and a friction pad (47) is provided between the gear (44) and the corresponding transmission wheel (41), and the friction pad (47) is used to increase the friction force between the gear (44) and the corresponding transmission wheel (41).

8. The vertical underwater pelletizer according to claim 5, characterized in that: The first rotating shaft (36) is rotatably connected to the guide plate (33), and two first rotating shafts (36) are provided on the guide plate (33), and a first conveyor belt (39) is wound between the two first rotating shafts (36); The waste hopper (3) is rotatably connected to two sets of first pulleys (52), and the slide (48) is provided with two second pulleys (53), one of the first pulleys (52) is coaxially fixedly connected to the first rotating shaft (36) on the slide (48), and the other second pulley (53) is rotatably connected to the slide (48), and a transmission belt (54) is wound around the first pulleys (52) and the second pulleys (53) to realize transmission, and a drive motor (51) for driving one of the first pulleys (52) to rotate is fixedly connected to the waste hopper (3).

9. The vertical underwater pelletizer according to claim 8, characterized in that: The bottom wall of the waste hopper (3) is rotatably connected to two rotating rollers (55), and a second conveyor belt (56) is wound between the two rotating rollers (55), one of the rotating rollers (55) passes through the waste hopper (3), and one of the second pulleys (53) is coaxially fixedly connected to the end of one of the rotating rollers (55).

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