Combined underwater granulator

Abstract

The utility model discloses a combined underwater granulator, which relates to the technical field of granulator and comprises a base, supporting legs are fixedly mounted at four corners of the top of the base, a top seat is fixedly mounted at the tops of the supporting legs, a mounting groove is formed in the middle of one side of the top seat, a granulating mechanism is fixedly mounted on the inner side of the mounting groove, and a water inlet is formed in one side of the granulating mechanism. A collecting mechanism is movably mounted on the outer side in the mounting groove; and the pelletizing mechanism comprises a pelletizing water tank, and the pelletizing water tank is fixedly mounted on the side, away from the collecting mechanism, in the mounting groove. By the adoption of the structure, the filtering assembly is matched with the guiding assembly, the second motor is started to drive the rotating shaft and the conveying belt to rotate, granular materials obtained after grain cutting fall into the water tank to float and are driven by the conveying belt, the filtering net frame circularly rises and turns over to the top of the collecting mechanism in a reciprocating mode, non-stop filtering is achieved, time is saved, and production efficiency is improved; the equipment loss is reduced, and continuous production is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of pelletizer technology, and specifically relates to a combined underwater pelletizer. Background Technology

[0002] The combined underwater pelletizer is an advanced plastic processing equipment, typically composed of several key components, including a material conveying system, an extrusion unit, a pelletizing system, and a separation and drying system. The material conveying system accurately delivers the plastic raw materials to the extrusion unit, which heats and plasticizes the raw materials and extrudes continuous plastic strips. The pelletizing system is located underwater; once the plastic strips enter the water, high-speed rotating cutters cut them into uniform pellets according to a set size. The advantages of underwater pelletizing are obvious: the cooling effect of the water allows the pellets to quickly solidify, preventing them from sticking together and ensuring their shape and quality. The separation and drying system separates the cut pellets from the water and dries them, ultimately yielding high-quality plastic pellets. These pellets are widely used in many industries, such as plastic product manufacturing, effectively improving the production efficiency and quality of plastic pellets.

[0003] Chinese patent CN218256094U discloses an underwater pelletizer, which includes a pelletizing box and an extrusion template installed on one side of the pelletizing box. Support rods are fixedly installed at the four corners inside the pelletizing box, and the extrusion template is slidably sleeved onto the support rods at the four corners. A screw is rotatably installed on the top of the inner wall of the pelletizing box, and the top of the extrusion template is threaded onto the screw. A motor is fixedly installed on the side of the pelletizing box away from the extrusion template, and a cutter shaft is fixedly installed at the output end of the motor. A blade is fixedly installed at the end of the cutter shaft near the extrusion template. A discharge pipe is fixedly connected to the bottom of the pelletizing box, and a collection box is fixedly connected to the bottom of the discharge pipe. A filter screen is fixedly installed in the middle of the collection box. The support rods and screw facilitate the replacement of the extrusion template when different pellet sizes need to be produced, eliminating the need to replace the entire underwater pelletizer and reducing operating costs.

[0004] While the aforementioned combined underwater pelletizer achieves good pelletizing results in practical applications, it exhibits several significant shortcomings. After each processing cycle, the water must be drained and filtered before the pelletized material is removed. When processing resumes, water must be added again before production can resume. Clearly, repeating these steps prevents efficient, continuous, and uninterrupted production. This significantly impacts production efficiency, increases operational complexity and time costs. From a practical production perspective, the existing equipment does indeed have certain deficiencies and urgently needs improvement and optimization to meet the demands of modern industrial high-efficiency production. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a combined underwater pelletizer to solve the problem that existing production and processing equipment cannot achieve continuous and uninterrupted production and processing.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A combined underwater pelletizer includes a base, with support legs fixedly installed at the four corners of the top of the base, a top seat fixedly installed on the top of the support legs, and an installation groove opened in the middle of one side of the top seat. A pelletizing mechanism is fixedly installed on the inner side of the installation groove, and a collecting mechanism is movably installed on the outer side of the installation groove.

[0008] The pelletizing mechanism includes a pelletizing water tank, which is fixedly installed in the installation groove on the side away from the collection mechanism. A pelletizing assembly is fixedly installed inside the pelletizing water tank on the side away from the collection mechanism. A filter assembly is movably installed inside the pelletizing water tank on the side away from the pelletizing assembly. A guide assembly is fixedly installed at the upper end of the side of the pelletizing water tank away from the pelletizing assembly. The guide assembly is located above the collection mechanism. The pelletizing water tank is installed at an angle inside the installation groove.

[0009] As a preferred technical solution, the pelletizing assembly includes a feeding pipe and a fixing frame. The feeding pipe is fixedly installed on the side of the pelletizing tank away from the collecting mechanism. A forming disc is fixedly installed inside the feeding pipe near the collecting mechanism. The forming disc has forming holes at equal intervals. A turntable is rotatably connected to the middle of the side of the forming disc near the collecting mechanism. Pelletizing blades are fixedly installed at equal intervals on the outer side of the turntable. The fixing frame is fixedly installed on the upper end of the side of the pelletizing tank away from the collecting mechanism. A first motor is fixedly connected to the outer side of the fixing frame. A synchronous pulley is fixedly installed through the fixing frame at the output end of the first motor. A synchronous pulley is also fixedly installed on the side of the turntable near the collecting mechanism. The synchronous pulleys are connected by a synchronous belt drive.

[0010] As a preferred technical solution, a connecting flange is fixedly installed on the outer side of the feeding pipe, and mounting holes are equally spaced on the outer side of the connecting flange, and the mounting holes are countersunk holes.

[0011] As a preferred technical solution, a solenoid valve is fixedly connected to the bottom of the pelletizing tank, and a drain pipe is fixedly installed at the bottom output end of the solenoid valve.

[0012] As a preferred technical solution, the filter assembly includes two rotating shafts and a second motor. The rotating shafts are rotatably connected to the middle and upper part of the pelletizing water tank. The second motor is fixedly installed on the upper side of the pelletizing water tank. The output end of the second motor is fixedly connected to the end of a rotating shaft. A conveyor belt is drivenly connected to the outer surface of the rotating shaft. Filter screen frames are fixedly installed at equal intervals on the outer surface of the conveyor belt.

[0013] As a preferred technical solution, the guide assembly includes an installation cylinder, which is fixedly installed on both sides of the upper end of the pelletizing tank near the collection mechanism. A torsion spring is fixedly installed inside the installation cylinder, and a guide frame is fixedly installed inside the torsion spring. Support shafts are fixedly installed at both ends of the guide frame, and the outer ends of the support shafts are rotatably connected to the inside of the installation cylinder. The support shafts are located inside the torsion spring.

[0014] As a preferred technical solution, the collection mechanism includes a chute, which is opened at both ends of the mounting groove. A slide plate is slidably connected to the inner side of the chute, and a collection box is fixedly installed at the bottom of the slide plate. The collection box is located directly below the guide frame.

[0015] In summary, the present invention has the following main advantages:

[0016] First, during production and processing, this equipment uses the connecting flange mounting holes and bolts to connect the feeding pipe and the extrusion device. The collection mechanism is installed in the chute and can be quickly assembled. During molding, the extrusion device feeds the material into the feeding pipe, which is then assisted in molding by the molding disc and enters the water tank. The first motor is started to drive the synchronous wheel to rotate, and the synchronous belt causes the pelletizing blade to rotate at high speed to accurately pelletize the shaped material. The bolt connection method enables quick assembly and installation, which is convenient for inspection and maintenance and improves production efficiency and equipment reliability.

[0017] Secondly, by cooperating with the filter assembly and the guide assembly, the second motor is started to drive the rotating shaft and the conveyor belt to rotate. After the pelletized material falls into the water tank, it floats and is driven by the conveyor belt. The filter screen frame is repeatedly raised and flipped to the top of the collection mechanism, realizing non-stop filtration, saving time, improving production efficiency, reducing equipment wear and tear, and providing a guarantee for continuous production.

[0018] Third, a guiding component and a collection mechanism are set up. When the filter screen frame flips, the material automatically falls into the guide frame and enters the collection box through the inclined guide. When the filter screen frame touches the guide frame, it can be squeezed to rotate so that it can pass over. Afterwards, the torsion spring resets and drives the guide frame to reset, which improves the collection accuracy. After collection, the slide plate and collection box can be pulled out for quick disassembly and assembly, which is convenient for equipment use and brings convenience to production operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 3 This is a top view of the structure of this utility model;

[0022] Figure 4 This is a utility model Figure 2 A magnified structural diagram at point A.

[0023] Reference numerals: 1. Base; 2. Support leg; 3. Top seat; 4. Mounting groove; 5. Collection mechanism; 51. Slide groove; 52. Slide plate; 53. Collection box; 6. Pelletizing mechanism; 61. Pelletizing water tank; 62. Pelletizing assembly; 621. Feeding pipe; 622. Fixing frame; 623. Forming disc; 624. Forming hole; 625. Turntable; 626. Pelletizing blade; 627. First motor; 628. Synchronous pulley; 629. Synchronous belt; 63. Filter assembly; 631. Rotating shaft; 632. Second motor; 633. Conveyor belt; 634. Filter screen frame; 64. Connecting flange; 65. Mounting hole; 66. Guide assembly; 661. Mounting cylinder; 662. Torsion spring; 663. Material guide frame; 664. Support shaft; 67. Drain pipe; 68. Solenoid valve. Detailed Implementation

[0024] Example

[0025] refer to Figures 1 to 4 This embodiment of a combined underwater pelletizer includes a base 1, with support legs 2 fixedly installed at the four corners of the top of the base 1, and a top seat 3 fixedly installed on the top of the support legs 2. An installation groove 4 is provided in the middle of one side of the top seat 3, and a pelletizing mechanism 6 is fixedly installed on the inner side of the installation groove 4. A collection mechanism 5 is movably installed on the outer side of the installation groove 4.

[0026] The pelletizing mechanism 6 includes a pelletizing water tank 61, which is fixedly installed in the mounting groove 4 on the side away from the collecting mechanism 5. A pelletizing assembly 62 is fixedly installed inside the pelletizing water tank 61 on the side away from the collecting mechanism 5. A filter assembly 63 is movably installed inside the pelletizing water tank 61 on the side away from the pelletizing assembly 62. A guide assembly 66 is fixedly installed at the upper end of the side of the pelletizing water tank 61 away from the pelletizing assembly 62, and the guide assembly 66 is positioned above the collecting mechanism 5. The pelletizing water tank 61 is installed at an angle inside the mounting groove 4. The support legs 2 on the base 1 provide stable support for the entire device. The mounting groove 4 on one side of the top seat 3 is used to rationally arrange the pelletizing mechanism 6 and the collecting mechanism 5. The pelletizing water tank 61 in the pelletizing mechanism 6 is installed at an angle inside the mounting groove 4. This design allows materials to flow better under gravity, improving pelleting efficiency. It also provides suitable installation space for the internal pelletizing assembly 62, filter assembly 63, and guide assembly 66. The pelletizing assembly 62 precisely pelletizes the material, ensuring particle quality and size uniformity. The filter assembly 63 enables automated filtration during production, eliminating the need for downtime, saving time, increasing production efficiency, and reducing equipment wear, thus providing strong support for continuous production. The guide assembly 66, positioned above the collection mechanism 5, accurately guides the pelletized material to the collection mechanism 5, improving collection accuracy and efficiency. The movable collection mechanism 5 is easy to assemble and disassemble, facilitating material collection and processing.

[0027] refer to Figures 1-4The pelletizing assembly 62 includes a feeding pipe 621 and a fixing frame 622. The feeding pipe 621 is fixedly installed on the side of the pelletizing tank 61 away from the collecting mechanism 5. A forming disc 623 is fixedly installed inside the feeding pipe 621 near the collecting mechanism 5. Forming holes 624 are evenly spaced on the forming disc 623. A turntable 625 is rotatably connected to the middle of the side of the forming disc 623 near the collecting mechanism 5. Pelletizing blades 626 are fixedly installed at equal intervals on the outer side of the turntable 625. The fixing frame 622 is fixedly installed on the upper end of the side of the pelletizing tank 61 away from the collecting mechanism 5. A first motor 627 is fixedly connected to the outer side of the fixing frame 622. A synchronous pulley 628 is fixedly installed through the fixing frame 622 at the output end of the first motor 627. A synchronous pulley 628 is also fixedly installed on the side of the turntable 625 near the collecting mechanism 5. The synchronous pulleys 628 are connected by a synchronous belt 629. The feeding pipe 621 is fixed to one side of the pelletizing tank 61, providing a stable conveying channel for the material. The equally spaced forming holes 624 on the forming disc 623 inside the machine can assist the material in precise forming, ensuring the consistency of the pellet size. The pelletizing blades 626 on the outside of the turntable 625 are precisely matched. The synchronous pulleys 628 are driven to rotate by the first motor 627 on the fixed frame 622, and then driven by the synchronous belt 629 to rotate the synchronous pulleys 628 on the turntable 625, thereby making the pelletizing blades 626 rotate at high speed, realizing efficient pelleting of the formed material. This transmission method is stable and reliable, which can ensure the continuity and accuracy of the pelletizing process, improve pelletizing efficiency and quality, and provide key pelletizing function guarantee for the stable operation of the entire underwater pelletizer.

[0028] refer to Figure 1 A connecting flange 64 is fixedly installed on the outside of the feeding pipe 621. Mounting holes 65 are evenly spaced on the outside of the connecting flange 64, and these holes are countersunk. A solenoid valve 68 is fixedly connected to the bottom of the pelletizing water tank 61. A drain pipe 67 is fixedly installed at the bottom output end of the solenoid valve 68. The connecting flange 64 on the outside of the feeding pipe 621 facilitates the connection between the equipment and the external extrusion device. The evenly spaced mounting holes 65 are countersunk, which facilitates bolt connection, making the connection more stable, and ensuring a smooth and aesthetically pleasing connection surface. The solenoid valve 68 at the bottom of the pelletizing water tank 61 can precisely control water discharge. When drainage is required, the solenoid valve 68 can respond quickly, achieving efficient drainage operation. The drain pipe 67 at the bottom output end of the solenoid valve 68 provides a stable channel for the discharged water, ensuring smooth drainage and preventing water accumulation from adversely affecting equipment operation. These design elements work together to improve the ease of installation, operational stability, and controllability of the equipment.

[0029] refer to Figures 2-4The filter assembly 63 includes two rotating shafts 631 and a second motor 632. The rotating shafts 631 are rotatably connected to the middle and upper parts of the pelletizing tank 61. The second motor 632 is fixedly installed on the upper side of the pelletizing tank 61. The output end of the second motor 632 is fixedly connected to the end of one rotating shaft 631. A conveyor belt 633 is drivenly connected to the outer surface of the rotating shaft 631. Filter frames 634 are fixedly installed at equal intervals on the outer surface of the conveyor belt 633. The guide assembly 66 includes a mounting cylinder 661, which is fixedly installed on the pelletizing tank 61. On the upper side of the grain tank 61 near the collection mechanism 5, torsion springs 662 are fixedly installed inside the mounting cylinder 661. A guide frame 663 is fixedly installed inside the torsion spring 662. Support shafts 664 are fixedly installed at both ends of the guide frame 663. The outer ends of the support shafts 664 are rotatably connected to the inside of the mounting cylinder 661. The support shafts 664 are located inside the torsion springs 662. The collection mechanism 5 includes a chute 51, which is formed at both ends of the mounting groove 4. A sliding plate 52 is slidably connected to the inner side of the chute 51. The bottom of the sliding plate 52 is fixed... A collection box 53 is fixedly installed below the guide frame 663. In the filter assembly 63, two rotating shafts 631 are rotatably connected inside the pelletizing water tank 61. A second motor 632 drives one of the rotating shafts 631, causing the conveyor belt 633 on the outer surface of the shaft 631 to move. The filter frames 634 fixed at equal intervals on the conveyor belt 633 can achieve automated filtration during equipment operation without stopping the machine, saving time and improving production efficiency. The mounting cylinder 661 of the guide assembly 66 is equipped with a torsion spring 662 and a guide... When the filter screen frame 634 flips and touches the guide frame 663, the guide frame 663 can be squeezed and rotated to facilitate the filter screen frame 634 passing over. Afterwards, the torsion spring 662 resets and drives the guide frame 663 to reset, which improves the guiding effect and ensures that the material enters the collection box 53 stably. The slide groove 51 of the collection mechanism 5 cooperates with the slide plate 52 to make the collection box 53 easy to disassemble and assemble. The collection box 53 is located directly below the guide frame 663 and can accurately collect materials. The overall design improves the automation level, collection accuracy and operation convenience of the equipment.

[0030] Operating principle and advantages: During the production and processing of this equipment, the mounting holes 65 on the connecting flange 64 can be fully utilized, and the feeding pipe 621 of this equipment can be connected to the external extrusion device with bolts. At the same time, the collecting mechanism 5 is installed inside the slide 51 of the mounting groove 4, which can realize the rapid assembly and installation of this equipment. When the molding process is carried out, the extrusion device is started and the material enters the feeding pipe 621 under the action of conveying pressure. The feeding pipe 621 guides the material, and then the molding hole 624 on the molding disc 623 assists in molding, so that the material can smoothly enter the water tank. At this time, the first motor 627 is started and runs. The first motor 627 can drive the synchronous pulley 628 to rotate. The synchronous pulley 628 drives the pelletizing blade 626 located at the bottom to rotate rapidly through the synchronous belt 629. The high-speed rotation of the pelletizing blade 626 can accurately pelletize the material formed at the molding hole 624. It can be seen that this equipment adopts the bolt connection method to realize rapid assembly and installation, which not only facilitates maintenance work, but also realizes rapid and automated pelletizing, greatly improving production efficiency and equipment reliability.

[0031] By carefully designing the filter assembly 63 in conjunction with the guide assembly 66, this equipment offers significant advantages during use. The second motor 632 can be started, driving the rotating shaft 631 to rotate. The rotating shaft 631, in turn, drives the conveyor belt 633 on its outer surface to rotate. During this process, the granulated material falls into the water inside the tank and floats to the surface. As the conveyor belt 633 moves, the filter screen 634 moves forward along the conveyor belt's direction, repeatedly rising from the water and flipping to the top of the collection mechanism 5. This design allows the equipment to filter without stopping production, achieving automated filtration throughout the entire production process. This effectively saves production time and significantly improves the overall production efficiency of the equipment. Simultaneously, it reduces equipment wear and time wastage caused by frequent filtration shutdowns, providing strong support for continuous production.

[0032] By incorporating the guiding component 66 and the collecting mechanism 5, this device performs excellently during use. As the filter frame 634 rotates along the conveyor belt 633, when the filter frame 634 flips to face down, the material automatically falls into the guide frame 663. The inclined guiding action of the guide frame 663 causes the material to automatically fall into the collecting box 53. As the filter frame 634 rotates further, when it contacts the guide frame 663, the filter frame 634 can squeeze the guide frame 663. After being squeezed, the guide frame 663 can adaptively rotate, facilitating the rotation of the filter frame 634. 4. The guide frame 663 greatly improves the guiding effect, ensuring that the material can stably enter the collection box 53. When the filter screen frame 634 passes the guide frame 663, the torsion spring 662 in the mounting cylinder 661 resets and automatically drives the guide frame 663 to reset. It can be seen that this equipment can achieve automated and efficient processing, improve the accuracy of material collection, and after the material collection is completed, the slide plate 52 and collection box 53 inside the slide groove 51 can be pulled out to assist in the quick disassembly and assembly of the collection box 53, which facilitates the use of this equipment and brings great convenience to production operations.

Claims

1. A combined underwater pelletizer, comprising a base (1), characterized in that: Support legs (2) are fixedly installed at the four corners of the top of the base (1). A top seat (3) is fixedly installed on the top of the support legs (2). An installation groove (4) is opened in the middle of one side of the top seat (3). A pelletizing mechanism (6) is fixedly installed on the inner side of the installation groove (4). A collecting mechanism (5) is movably installed on the outer side of the installation groove (4). The pelletizing mechanism (6) includes a pelletizing water tank (61), which is fixedly installed in the installation groove (4) on the side away from the collection mechanism (5). A pelletizing assembly (62) is fixedly installed inside the pelletizing water tank (61) on the side away from the collection mechanism (5). A filter assembly (63) is movably installed inside the pelletizing water tank (61) on the side away from the pelletizing assembly (62). A guide assembly (66) is fixedly installed at the upper end of the side of the pelletizing water tank (61) away from the pelletizing assembly (62). The guide assembly (66) is located above the collection mechanism (5). The pelletizing water tank (61) is installed at an angle inside the installation groove (4).

2. The combined underwater pelletizer according to claim 1, characterized in that: The pelletizing assembly (62) includes a feeding pipe (621) and a fixing frame (622). The feeding pipe (621) is fixedly installed on the side of the pelletizing tank (61) away from the collecting mechanism (5). A forming disc (623) is fixedly installed inside the feeding pipe (621) at one end near the collecting mechanism (5). The forming disc (623) has forming holes (624) evenly spaced on it. A turntable (625) is rotatably connected to the middle of the side of the forming disc (623) near the collecting mechanism (5). The outer side of the turntable (625) has evenly spaced holes. A pelletizing blade (626) is fixedly installed. The fixing frame (622) is fixedly installed on the upper end of the pelletizing water tank (61) away from the collecting mechanism (5). A first motor (627) is fixedly connected to the outside of the fixing frame (622). The output end of the first motor (627) passes through the fixing frame (622) and a synchronous pulley (628) is fixedly installed. A synchronous pulley (628) is also fixedly installed on the side of the turntable (625) near the collecting mechanism (5). The synchronous pulleys (628) are connected to each other by a synchronous belt (629).

3. A combined underwater pelletizer according to claim 2, characterized in that: A connecting flange (64) is fixedly installed on the outside of the feeding pipe (621). The connecting flange (64) has mounting holes (65) at equal intervals on its outside. The mounting holes (65) are countersunk holes.

4. A combined underwater pelletizer according to claim 2, characterized in that: A solenoid valve (68) is fixedly connected to the bottom of the pelletizing tank (61), and a drain pipe (67) is fixedly installed at the bottom output end of the solenoid valve (68).

5. A combined underwater pelletizer according to claim 1, characterized in that: The filter assembly (63) includes two rotating shafts (631) and a second motor (632). The rotating shafts (631) are rotatably connected to the middle and upper part of the pelletizing tank (61). The second motor (632) is fixedly installed on the upper side of the pelletizing tank (61). The output end of the second motor (632) is fixedly connected to the end of a rotating shaft (631). A conveyor belt (633) is drivenly connected to the outer surface of the rotating shaft (631). Filter screen frames (634) are fixedly installed at equal intervals on the outer surface of the conveyor belt (633).

6. A combined underwater pelletizer according to claim 5, characterized in that: The guide assembly (66) includes a mounting cylinder (661), which is fixedly installed on both sides of the upper end of the pelletizing tank (61) near the collecting mechanism (5). A torsion spring (662) is fixedly installed inside the mounting cylinder (661), and a guide frame (663) is fixedly installed inside the torsion spring (662). A support shaft (664) is fixedly installed at both ends of the guide frame (663). The outer end of the support shaft (664) is rotatably connected to the inside of the mounting cylinder (661), and the support shaft (664) is located inside the torsion spring (662).

7. A combined underwater pelletizer according to claim 6, characterized in that: The collecting mechanism (5) includes a chute (51), which is opened at both ends in the mounting groove (4). A slide plate (52) is slidably connected to the inner side of the chute (51). A collecting box (53) is fixedly installed at the bottom of the slide plate (52). The collecting box (53) is located directly below the guide frame (663).

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