Granulation mechanism

Abstract

The pelletizing mechanism comprises a die head, the outer wall of the die head is fixedly connected with an end ring, the outer wall of the die head is sleeved with an end cover in a threaded mode, the outer wall of the end cover is fixedly communicated with two water inlet connectors, the outer walls of the two water inlet connectors are fixedly communicated with rubber hoses, the outer wall of the end cover is provided with an end hole, and the end hole is communicated with the end ring. The inner wall of the end hole is rotationally connected with a driving shaft, the outer wall of the driving shaft is fixedly sleeved with a bearing, and the outer wall of the driving shaft is sleeved with a spring. Through the sliding fit structure of the T-shaped block and the T-shaped groove, bolts do not need to be detached one by one, the blade replacement step is simplified, and the replacement efficiency is remarkably improved; the blade replacement process is short in time consumption, the possibility that high-temperature plastic is adhered to a discharge port due to too long operation time is reduced, and the material blocking probability is reduced; due to rotation and linear movement of the end cover and the limiting cover, the pelletizing assembly can be quickly exposed, and the maintenance convenience is high.

Description

Technical Field

[0001] This utility model relates to the field of pelletizing equipment technology, and in particular to a pelletizing mechanism. Background Technology

[0002] A PE pelletizing machine is a device used to cut molten polyethylene (PE) plastic into uniform pellets using high-speed rotating blades. It is one of the key pieces of equipment in plastic recycling and reuse production. This equipment is commonly used in the plastic recycling industry to process waste plastics such as films, bottle flakes, and scraps into recycled plastic pellets for further use. A pelletizer typically includes a pelletizing head, a cooling system (such as a water ring system), and a control system.

[0003] In existing technologies, the blades of traditional pelletizing mechanisms are fixed by bolts, and each blade needs to be disassembled individually for replacement, which is time-consuming and more likely to cause high-temperature plastic to adhere to the discharge port, resulting in material blockage. Therefore, we propose a pelletizing mechanism to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pelletizing mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pelletizing mechanism includes a die head, an end ring fixedly connected to the outer wall of the die head, an end cap threadedly fitted onto the outer wall of the die head, two water inlet connectors fixedly interconnected on the outer wall of the end cap, rubber hoses fixedly interconnected on the outer walls of the two water inlet connectors, an end hole formed on the outer wall of the end cap, a drive shaft rotatably connected to the inner wall of the end hole, a bearing fixedly fitted onto the outer wall of the drive shaft, a spring fitted onto the outer wall of the drive shaft, an inner concave ring fitted onto the outer wall of the drive shaft, an annular pelletizing plate fitted onto the outer wall of the drive shaft, two key blocks fixedly connected to the outer wall of the drive shaft, a limiting cap threadedly fitted onto the outer wall of the inner concave ring, and a pelletizing assembly on the outer wall of the annular pelletizing plate.

[0007] Preferably, the pelletizing assembly includes multiple T-shaped blocks, and the outer wall of the annular pelletizing plate is uniformly provided with multiple T-shaped grooves. The inner walls of the multiple T-shaped grooves are slidably connected to the outer walls of the multiple T-shaped blocks, and the outer walls of the multiple T-shaped blocks are fixedly connected with blade holders. The outer walls of the multiple blade holders are fixedly embedded with pelletizing blades, and the outer walls of the multiple pelletizing blades are in contact with the outer wall of the die head. The pelletizing assembly is used to pelletize the rubber at the discharge port.

[0008] Preferably, one end of the end cap is pressed against the outer wall of the end ring, thereby increasing the sealing between the end cap and the die head by setting the end ring.

[0009] Preferably, one end of the spring is fixedly connected to the outer ring of the bearing, and the other end of the spring is fixedly connected to the outer wall of the concave ring. By setting the spring, multiple pelletizing blades can be made to contact the die head, and the pressure of the pelletizing blades can be adjusted, a stable cutting gap can be maintained, and wear of the pelletizing blades can be compensated.

[0010] Preferably, the inner wall of the annular pelletizing plate has two keyways, the inner walls of the two keyways are slidably connected to the outer walls of two key blocks respectively, and the two key blocks are pressed against the inner walls of the two keyways after rotation, thereby driving the annular pelletizing plate to move.

[0011] Preferably, the inner wall of the limiting cover is slidably connected to the outer wall of the multiple cutter holders, and the inner wall of the limiting cover is pressed against the outer wall of the annular pelletizing plate. By setting the limiting cover, the multiple T-blocks are fixed in the multiple T-grooves.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution uses a sliding fit structure between the T-block and the T-slot to eliminate the need to disassemble each bolt individually, simplifying the blade replacement process and significantly improving replacement efficiency. The blade replacement process is quick, reducing the possibility of high-temperature plastic adhering to the discharge port due to excessive operation time and lowering the probability of material blockage. The rotating and linear movement design of the end cap and the limit cap facilitates quick exposure of the pelletizing assembly, making maintenance highly convenient. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a cross-sectional structural diagram of a pelletizing mechanism proposed in this utility model;

[0016] Figure 2 This is a partial three-dimensional structural diagram of a pelletizing mechanism proposed in this utility model;

[0017] Figure 3 This utility model proposes a pelletizing mechanism. Figure 1 A magnified structural diagram of part A in the diagram;

[0018] Figure 4 This is a partial cross-sectional structural diagram of a pelletizing mechanism proposed in this utility model.

[0019] In the diagram: 1. Die head; 2. End ring; 3. End cap; 4. Drive shaft; 5. Bearing; 6. Spring; 7. Concave ring; 8. Annular pelletizing plate; 9. Key block; 10. Limiting cap; 11. T-block; 12. Blade holder; 13. Pelletizing blade; 14. Water inlet connector; 15. Rubber hose. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-4 As shown, a pelletizing mechanism is disclosed, including a die head 1. An end ring 2 is fixedly connected to the outer wall of the die head 1. An end cap 3 is threaded onto the outer wall of the die head 1. One end of the end cap 3 is pressed against the outer wall of the end ring 2. An annular sealing gasket can be added to the contact surface between the end cap 3 and the end ring 2. Two water inlet connectors 14 are fixedly connected to the outer wall of the end cap 3. A rubber hose 15 is fixedly connected to the outer wall of each of the two water inlet connectors 14. One of the rubber hoses 15 is connected to an existing water pump. The water pump delivers external water to the end cap 3, cools the particles, and also serves as a conveying agent.

[0022] The outer wall of the end cap 3 has an end hole, and the inner wall of the end hole is rotatably connected to the drive shaft 4. The contact surface between the end hole and the drive shaft 4 is mechanically sealed. The outer wall of the drive shaft 4 is fixedly fitted with a bearing 5, which supports the spring 6. The outer wall of the drive shaft 4 is fitted with a spring 6, one end of which is fixedly connected to the outer ring of the bearing 5, and the other end of which is fixedly connected to the outer wall of the concave ring 7. The spring 6 supports the concave ring 7 and the annular pelletizing plate 8.

[0023] The outer wall of the drive shaft 4 is fitted with a concave ring 7 and an annular pelletizing plate 8. Two key blocks 9 are fixedly connected to the outer wall of the drive shaft 4. Two keyways are opened on the inner wall of the annular pelletizing plate 8. The inner walls of the two keyways are slidably connected to the outer walls of the two key blocks 9 respectively. A limiting cover 10 is threadedly fitted on the outer wall of the concave ring 7. The limiting cover 10 moves along the concave ring 7, and the thread direction of the limiting cover 10 when tightened is the same as the rotation direction of the drive shaft 4.

[0024] The outer wall of the annular pelletizing plate 8 is provided with a pelletizing assembly, which includes multiple T-shaped blocks 11. Multiple T-shaped grooves are evenly opened on the outer wall of the annular pelletizing plate 8. The inner walls of the multiple T-shaped grooves are slidably connected to the outer walls of the multiple T-shaped blocks 11 respectively. The multiple T-shaped grooves are used for the installation of the multiple T-shaped blocks 11. The outer walls of the multiple T-shaped blocks 11 are all fixedly connected with a knife holder 12.

[0025] The inner wall of the limiting cover 10 is slidably connected to the outer wall of the multiple cutter holders 12. The inner wall of the limiting cover 10 is pressed against the outer wall of the annular pelletizing plate 8. The limiting cover 10 presses and fixes the multiple cutter holders 12. The outer walls of the multiple cutter holders 12 are all fixedly embedded with pelletizing blades 13. The pelletizing blades 13 are inclined on the cutter holders 12. The outer walls of the multiple pelletizing blades 13 are all in contact with the outer wall of the die head 1.

[0026] Working principle: In use, the die head 1 is installed on the existing plastic extruder (SJ-25). During extrusion and pelletizing, one end of the drive shaft 4 is fixedly installed to the output end of the existing drive equipment (motor). The drive shaft 4 rotates through the motor, which in turn drives two key blocks 9 to rotate. The rotation of the two key blocks 9 drives the annular pelletizing plate 8 to rotate through two keyways. The rotation of the annular pelletizing plate 8 drives multiple cutter holders 12 and multiple pelletizing blades 13 to rotate. During the rotation, the multiple pelletizing blades 13 pelletize the strip-shaped plastic in the die head 1. At the same time, one of the rubber hoses 15 is connected to the existing water pump, which pumps external water... The source is fed into the end cap 3 to cool the granulated plastic particles, and discharged from another rubber hose 15. The outlet end of the other rubber hose 15 can be located in the existing stainless steel mesh frame to collect the granulated plastic particles. When multiple pelletizing blades 13 are replaced, the drive shaft 4 stops operating, the end cap 3 is rotated to move it linearly along the drive shaft 4, exposing the annular pelletizing plate 8. The limiting cap 10 is rotated to move it to the right along the concave ring 7, no longer limiting the multiple T-blocks 11, and exposing the multiple T-blocks 11. The multiple T-blocks 11 are then slid out from the multiple T-slots, and the pelletizing blades 13 can be taken out for quick replacement.

[0027] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0028] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dicing mechanism comprising a die head (1), characterized in that, An end ring (2) is fixedly connected to the outer wall of the die head (1). An end cap (3) is threadedly fitted onto the outer wall of the die head (1). Two water inlet connectors (14) are fixedly connected to the outer wall of the end cap (3). A rubber hose (15) is fixedly connected to the outer wall of each of the two water inlet connectors (14). An end hole is opened on the outer wall of the end cap (3). A drive shaft (4) is rotatably connected to the inner wall of the end hole. A bearing (5) is fixedly fitted onto the outer wall of the drive shaft (4). A spring (6) is fitted onto the outer wall of the drive shaft (4). An inner concave ring (7) is fitted onto the outer wall of the drive shaft (4). An annular pelletizing plate (8) is fitted onto the outer wall of the drive shaft (4). Two key blocks (9) are fixedly connected to the outer wall of the drive shaft (4). A limit cap (10) is threadedly fitted onto the outer wall of the inner concave ring (7). A pelletizing assembly is provided on the outer wall of the annular pelletizing plate (8).

2. A cut-off mechanism according to claim 1, wherein The pelletizing assembly includes multiple T-shaped blocks (11). The outer wall of the annular pelletizing plate (8) is uniformly provided with multiple T-shaped grooves. The inner walls of the multiple T-shaped grooves are slidably connected to the outer walls of the multiple T-shaped blocks (11). The outer walls of the multiple T-shaped blocks (11) are all fixedly connected with blade holders (12). The outer walls of the multiple blade holders (12) are all fixedly inlaid with pelletizing blades (13). The outer walls of the multiple pelletizing blades (13) are in contact with the outer wall of the die head (1).

3. A cut-off mechanism according to claim 1, wherein One end of the end cap (3) is pressed against the outer wall of the end ring (2).

4. A cut-off mechanism according to claim 1, wherein One end of the spring (6) is fixedly connected to the outer ring of the bearing (5), and the other end of the spring (6) is fixedly connected to the outer wall of the concave ring (7).

5. A pelletizing mechanism according to claim 1, characterized in that, The inner wall of the annular pelletizing plate (8) has two keyways, and the inner walls of the two keyways are slidably connected to the outer walls of the two key blocks (9).

6. A cut-off mechanism according to claim 2, wherein The inner wall of the limiting cover (10) is slidably connected to the outer wall of the multiple knife holders (12), and the inner wall of the limiting cover (10) is pressed against the outer wall of the annular pelletizing plate (8).

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