Pelletizing device for polyethylene particles

Abstract

The utility model proposes extruding granulator for polyethylene particle processing relates to polyethylene particle processing technical field, including material box, the front end of material box is provided with the outlet groove, the outlet of outlet groove is connected with extruding bucket through screw, the side of extruding bucket far away from outlet groove is equipped with connecting plate, the connecting plate is equipped with cooperation bucket and is connected with rotating, the outside of cooperation bucket is equipped with drive structure, and cooperation bucket's upper end is equipped with limit structure for the rotation angle of cooperation bucket is located, compared with prior art, the utility model discloses setting limit structure on material box, realizes the reliable limit of the rotation angle of gear disc in the cutting process of realizing the intermittent rotation of cooperation bucket, effectively solves the problem of the easy wear of original single side clamping, and the problem of limit failure, avoids the deviation of the rotation angle of cooperation bucket, significantly improves the angle precision of its intermittent rotation, and further guarantees the consistency and stability of polyethylene particle cutting size.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene granule processing technology, and in particular to a granulation device for polyethylene granule processing. Background Technology

[0002] Polyethylene granules, as a core product of the ethylene industry, are one of the most widely used raw material forms of thermoplastic resins. Their production quality directly affects the performance of products in downstream chemical, building materials, packaging and other fields. In the processing of polyethylene granules, the extrusion unit is the key equipment to realize the integration of plasticizing, extrusion and pelletizing of molten material. Its core requirements are to ensure uniform particle size, continuous production and stable operation.

[0003] Application No. 202420388405.6 discloses a pelletizing device for processing polyethylene pellets. This device achieves precise rotation of the mixing drum by using a drive gear and a locking block for limiting the movement. By synchronously cutting the extruded material during rotation, it achieves a processing effect with uniform pellet size. However, in actual use, the drive gear adopts a single-sided locking block design, and the locking block is a combination of straight and inclined surfaces. This single-sided force contact method leads to stress concentration at the locking point. Long-term and frequent rotational impacts can easily cause wear and deformation of the contact surface, which in turn leads to limiting failure. This causes deviations in the rotation angle of the mixing drum, directly affecting the pelletizing size accuracy. Secondly, during long-term operation, the fitting gap between the pelletizing drum and the mixing drum inevitably changes due to processing errors and component wear. The spring with a fixed elastic coefficient cannot adaptively adjust the clamping force. When the gap narrows, the two will fit too tightly, increasing rotational resistance and even causing component jamming. When the gap widens, the fit will become loose, causing problems such as leakage of molten polyethylene and incomplete pelletizing, which seriously affects production continuity and product qualification rate. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model proposes a pelletizing device for processing polyethylene pellets.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A granulation device for processing polyethylene granules includes a hopper with an outlet groove at its front end. An extrusion barrel is connected to the outlet of the outlet groove by screws. A connecting plate is provided on the side of the extrusion barrel away from the outlet groove. A mating barrel is rotatably connected through the connecting plate. A driving structure is provided on the outside of the mating barrel, and a limiting structure is provided on the upper end of the mating barrel to limit the rotation angle of the mating barrel. A rotating connecting assembly is provided on the outside of the connection between the mating barrel and the extrusion barrel to achieve tight fit and adaptive compensation between the mating barrel and the extrusion barrel. An mounting component is provided on the outside of the hopper.

[0007] Preferably, the limiting structure includes a connecting seat fixedly connected to one side of the upper end face of the material box, a limiting seat fixedly connected to one side of the connecting seat, a movable groove opened on the lower end face of the limiting seat, a movable plate embedded in the movable groove, and a plurality of toothed blocks equidistantly connected to the lower end face of the movable plate.

[0008] Preferably, the limiting structure further includes a crossbar fixedly connected inside the movable groove, a movable block sleeved on the outside of the crossbar, the movable block being fixedly connected to the movable plate, and a connecting spring connected to the inner wall of the movable groove and sleeved outside the crossbar, the free end of the connecting spring being connected to the movable block.

[0009] Preferably, the rotary connecting assembly includes a groove formed on the outer wall of the extrusion barrel, a slider is embedded inside the groove, a slot is formed at one end of the slider, a rod is inserted inside the slot, the end of the rod away from the slider is fixedly connected to the outer wall of the mating barrel, and a fastener is provided at the connection between the rod and the slot.

[0010] Preferably, the fastener includes a groove that extends through the inner wall of the slider and the outer wall of the insert rod, with an insert block inserted inside the groove, and a fixing plate fixedly connected to the upper end face of the insert block and located at the upper end of the slider.

[0011] Preferably, the fastener further includes a rod groove formed in the side wall of the fixing plate, an elastic rod is connected inside the rod groove, a side block is hinged to the free end of the elastic rod, a locking block is fixedly connected to the side block near the slider, and a locking groove is formed on the outer wall of the slider to cooperate with the locking block.

[0012] Preferably, the drive structure includes a bracket fixedly connected to one side of the outer wall of the material box, a drive motor is mounted on the bracket, the output end of the drive motor is connected to a gear, and a gear plate meshes with one side of the gear.

[0013] Preferably, the mounting component includes a mounting base fixedly connected to the outer wall of the material box, a mounting rod inserted into a pre-drilled mounting hole in the mounting base, one end of the mounting rod being fixedly connected to a connecting plate, and a mounting bolt being threaded onto the mounting base.

[0014] Preferably, a feed hopper is connected through the middle of the upper end face of the material box, and an electric telescopic rod is installed inside the cylindrical cover connected to the rear side of the outer wall of the material box. The free end of the electric telescopic rod passes through and extends into the interior of the material box and is connected to a push plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When in use, this utility model sets a limiting structure on the material box to reliably limit the rotation angle of the toothed disc during the intermittent rotation of the cooperating barrel to achieve pellet cutting. This effectively solves the problems of easy wear and limit failure of the original single-sided clamping position, avoids deviation of the rotation angle of the cooperating barrel, improves the angle accuracy of its intermittent rotation, and thus ensures the consistency and stability of the polyethylene pellet size.

[0017] 2. In use, this utility model provides a rotating connecting component on the outside of the connection between the mating barrel and the extrusion barrel. Compared with the original spring structure with a fixed elastic coefficient, this component can ensure the tightness of the fit between the two through mechanical locking, and can also adaptively compensate for gaps caused by processing errors or wear. This avoids the problems of increased rotational resistance and component jamming caused by excessively tight fit, as well as material leakage and incomplete pelletizing caused by excessively loose fit. This significantly improves the stability of the device operation and the continuity of production, and increases the product qualification rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

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

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic diagram of the limiting structure of this utility model;

[0022] Figure 4 This is an enlarged schematic diagram of the rotating connection component of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection between the insert rod and the slider of this utility model;

[0024] Figure 6 This is an enlarged schematic diagram showing the connection and fastening of the insertion rod and slider in this utility model.

[0025] Figure 7 This is a schematic diagram showing the connection between the drive structure and the mating barrel of this utility model.

[0026] In the diagram: 1. Material bin; 2. Outlet channel; 3. Extrusion barrel; 4. Connecting plate; 5. Matching barrel; 6. Drive structure; 61. Card seat; 62. Drive motor; 63. Gear missing; 64. Gear plate; 7. Limiting structure; 71. Connecting seat; 72. Limiting seat; 73. Movable groove; 74. Movable plate; 75. Tooth block; 76. Crossbar; 77. Moving block; 78. Connecting spring; 8. Rotary connecting assembly; 81. Slide groove; 82. Slider; 83. Insert rod; 84. Slot; 85. Fastener; 851. Fixing plate; 852. Insert block; 853. Insert groove; 854. Rod groove; 855. Elastic rod; 856. Side block; 857. Card block; 858. Card slot; 9. Mounting component; 91. Mounting seat; 92. Mounting rod; 93. Mounting bolt; 10. Feed hopper; 11. Electric telescopic rod; 12. Push plate. Detailed Implementation

[0027] 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.

[0028] like Figure 1 , Figure 2 and Figure 7 As shown, the extrusion device for processing polyethylene granules provided by this utility model includes a material box 1. An outlet groove 2 is provided at the front end of the material box 1. An extrusion barrel 3 is connected to the outlet of the outlet groove 2 by screws. A connecting plate 4 is provided on the side of the extrusion barrel 3 away from the outlet groove 2. A mating barrel 5 is rotatably connected through the connecting plate 4. A drive structure 6 is provided on the outside of the mating barrel 5. The drive structure 6 includes a bracket 61 fixedly connected to one side of the outer wall of the material box 1. A drive motor 62 is installed on the bracket 61. A gear 63 is connected to the output end of the drive motor 62. A gear 64 meshes with one side of the gear 63.

[0029] Furthermore, the outer side of the material box 1 is provided with a mounting component 9, which includes a mounting base 91 fixedly connected to the outer wall of the material box 1. A mounting rod 92 is inserted into a pre-drilled mounting hole in the mounting base 91. One end of the mounting rod 92 is fixedly connected to the connecting plate 4. A mounting bolt 93 is threadedly connected to the mounting base 91. When installing the mating barrel 5, first align the mounting rod 92 with the pre-drilled mounting hole on the mounting base 91, then insert it smoothly and push the mating barrel 5 to move horizontally towards the extrusion barrel 3 until the end faces of the mating barrel 5 and the extrusion holes of the two are completely in contact and the positions of their extrusion holes are initially aligned. Then, tighten the mounting bolt 93 on the mounting base 91, and the mounting rod 92 is fastened in the mounting hole by the locking force of the mounting bolt 93, thereby realizing the rapid positioning and installation of the mating barrel 5.

[0030] As can be seen from the above, during use, polyethylene raw material is first fed into the material box 1 through the feed hopper 10. Then, the electric telescopic rod 11 is started and drives the push plate 12 to move horizontally towards the outlet channel 2. Under the pushing pressure of the push plate 12, the raw material continuously enters the extrusion tank 3 through the outlet channel 2. After the raw material enters the extrusion tank 3, the electric telescopic rod 11 continues to be extended to provide a stable pushing force, so that the raw material is squeezed into a cylindrical strip shape through the extrusion hole on the extrusion tank 3. At the same time, the drive motor 62 drives the missing gear 63 to rotate. Through the meshing transmission between the missing gear 63 and the gear plate 64, the mating tank 5 is driven to rotate intermittently, so that the mating tank 5 rotates at a fixed angle each time. When the cylindrical strip raw material passes through the extrusion hole of the extrusion tank 3 and the extrusion hole of the mating tank 5 in sequence, during the intermittent rotation of the mating tank 5, the extrusion holes on the extrusion tank 3 and the mating tank 5 are misaligned. The intermittent cutting of the cylindrical strip raw material is achieved by changing the relative position of the holes, and finally, polyethylene granules of uniform size are formed.

[0031] refer to Figure 1 and Figure 3 As shown, the upper end of the mating barrel 5 is provided with a limiting structure 7, which is used to limit the rotation angle of the mating barrel 5.

[0032] The limiting structure 7 includes a connecting seat 71 fixedly connected to one side of the upper end face of the material box 1. A limiting seat 72 is fixedly connected to one side of the connecting seat 71. A movable groove 73 is opened on the lower end face of the limiting seat 72. A movable plate 74 is embedded inside the movable groove 73. A plurality of toothed blocks 75 are equidistantly connected to the lower end face of the movable plate 74.

[0033] The limiting structure 7 also includes a crossbar 76 fixedly connected inside the movable groove 73. A movable block 77 is sleeved on the outside of the crossbar 76. The movable block 77 is fixedly connected to the movable plate 74. A connecting spring 78 is connected to the inner wall of the movable groove 73 and sleeved on the outside of the crossbar 76. The free end of the connecting spring 78 is connected to the movable block 77.

[0034] Through the above technical solution:

[0035] During the intermittent rotation of the cooperating drum 5 to achieve pellet cutting, the toothed block 75 on the movable plate 74 is engaged with the toothed disc 64 of the drive structure 6. As the toothed disc 64 rotates, it synchronously drives the movable plate 74 to reciprocate linearly within the movable groove 73 opened in the limiting seat 72. During this process, the connecting spring 78 adaptively adjusts its elastic force through its own elastic deformation, driving the moving block 77 to slide smoothly outside the crossbar 76 to assist the movement of the movable plate 74. After a single cutting operation is completed, the connecting spring 78 releases its elastic potential energy and quickly resets the movable plate 74 to its initial position. This mechanical linkage achieves the limitation of the rotation angle of the toothed disc 64, effectively making up for the defects of the original single-sided locking, avoiding wear and limit deviation caused by long-term use, significantly improving the angular accuracy of the intermittent rotation of the cooperating drum 5, and thus ensuring the consistency and stability of the polyethylene pellet size.

[0036] Additionally, refer to Figure 2 , Figures 4-6 As shown, a rotating connecting component 8 is provided on the outer side of the connection between the mating barrel 5 and the extrusion barrel 3, which is used to achieve tight fit and adaptive compensation between the mating barrel 5 and the extrusion barrel 3.

[0037] The rotary connection assembly 8 includes a groove 81 formed on the outer wall of the extrusion barrel 3. A slider 82 is embedded inside the groove 81. A slot 84 is formed at one end of the slider 82. A rod 83 is inserted inside the slot 84. The end of the rod 83 away from the slider 82 is fixedly connected to the outer wall of the mating barrel 5. A fastener 85 is provided at the connection between the rod 83 and the slot 84.

[0038] The fastener 85 includes a groove 853 that passes through the inner wall of the slider 82 and the outer wall of the insert 83. An insert 852 is inserted into the groove 853. A fixing plate 851 is fixedly connected to the upper end of the insert 852 and located at the upper end of the slider 82.

[0039] The fastener 85 also includes a rod groove 854 formed on the side wall of the fixing plate 851. An elastic rod 855 is connected inside the rod groove 854. A side block 856 is hinged to the free end of the elastic rod 855. A locking block 857 is fixedly connected to the side of the side block 856 near the slider 82. A locking groove 858 is formed on the outer wall of the slider 82 to cooperate with the locking block 857.

[0040] Through the above technical solution:

[0041] Before use, insert the rod 83 on the outer wall of the mating barrel 5 into the slot 84 opened in the slider 82 to achieve initial positioning of the mating barrel 5 and the slider 82. Then, hold the fixing plate 851 and insert the insert block 852 into the corresponding slot 853. Next, pull the side block 856 outward to cause the elastic rod 855 to elastically stretch. After rotating the side block 856 ninety degrees, release it. The elastic rod 855 returns to its original position and drives the locking block 857 into the locking slot 858, completing the connection between the extrusion barrel 3 and the mating barrel 5. During the extrusion process, the slider 82 can slide... The component rotates smoothly and synchronously with the mating barrel 5 within the groove 81. This component not only replaces the original spring structure with a fixed elastic coefficient and ensures the tightness of the fit between the two through mechanical locking, but also adaptively compensates for gaps caused by machining errors or wear through the cooperation of the insert rod 83 and the slot 84, and the locking of the locking block 857 and the slot 858. This avoids the problem of increased rotational resistance caused by excessive tightness or material leakage caused by excessive looseness, while ensuring the flexibility of the rotation of the mating barrel 5 and improving the operational stability and production continuity of the device.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pelletizing device for processing polyethylene pellets, characterized in that: The device includes a material box (1), with an outlet groove (2) at the front end of the material box (1). An extrusion barrel (3) is connected to the outlet of the outlet groove (2) by screws. A connecting plate (4) is provided on the side of the extrusion barrel (3) away from the outlet groove (2). A mating barrel (5) is rotatably connected through the connecting plate (4). A driving structure (6) is provided on the outside of the mating barrel (5), and a limiting structure (7) is provided at the upper end of the mating barrel (5) to limit the rotation angle of the mating barrel (5). A rotating connecting component (8) is provided on the outside of the connection between the mating barrel (5) and the extrusion barrel (3) to achieve tight fit and adaptive compensation between the mating barrel (5) and the extrusion barrel (3). An installation component (9) is provided on the outside of the material box (1).

2. The extrusion apparatus for processing polyethylene granules according to claim 1, characterized in that: The limiting structure (7) includes a connecting seat (71) fixedly connected to one side of the upper end face of the material box (1), a limiting seat (72) fixedly connected to one side of the connecting seat (71), a movable groove (73) is provided on the lower end face of the limiting seat (72), a movable plate (74) is embedded inside the movable groove (73), and a plurality of toothed blocks (75) are equidistantly connected to the lower end face of the movable plate (74).

3. The extrusion apparatus for processing polyethylene granules according to claim 2, characterized in that: The limiting structure (7) also includes a crossbar (76) fixedly connected inside the movable groove (73). A movable block (77) is sleeved on the outside of the crossbar (76). The movable block (77) is fixedly connected to the movable plate (74). A connecting spring (78) is connected to the inner wall of the movable groove (73) and sleeved on the outside of the crossbar (76). The free end of the connecting spring (78) is connected to the movable block (77).

4. The extrusion apparatus for processing polyethylene granules according to claim 1, characterized in that: The rotating connecting assembly (8) includes a groove (81) formed on the outer wall of the extrusion barrel (3). A slider (82) is embedded inside the groove (81). A slot (84) is formed at one end of the slider (82). A rod (83) is inserted inside the slot (84). The end of the rod (83) away from the slider (82) is fixedly connected to the outer wall of the mating barrel (5). A fastener (85) is provided at the connection between the rod (83) and the slot (84).

5. The extrusion apparatus for processing polyethylene granules according to claim 4, characterized in that: The fastener (85) includes a groove (853) that passes through the inner wall of the slider (82) and the outer wall of the insert (83). An insert (852) is inserted into the groove (853). A fixing plate (851) is fixedly connected to the upper end of the insert (852) and located at the upper end of the slider (82).

6. The extrusion apparatus for processing polyethylene granules according to claim 5, characterized in that: The fastener (85) also includes a rod groove (854) formed on the side wall of the fixing plate (851). An elastic rod (855) is connected inside the rod groove (854). A side block (856) is hinged to the free end of the elastic rod (855). A locking block (857) is fixedly connected to the side of the side block (856) near the slider (82). A locking groove (858) is formed on the outer wall of the slider (82) to cooperate with the locking block (857).

7. The extrusion apparatus for processing polyethylene granules according to claim 1, characterized in that: The drive structure (6) includes a card holder (61) fixedly connected to one side of the outer wall of the material box (1). A drive motor (62) is installed on the card holder (61). The output end of the drive motor (62) is connected to a gear (63). A gear plate (64) meshes with one side of the gear (63).

8. The extrusion apparatus for processing polyethylene granules according to claim 1, characterized in that: The mounting component (9) includes a mounting base (91) fixedly connected to the outer wall of the material box (1). A mounting rod (92) is inserted into a pre-drilled mounting hole in the mounting base (91). One end of the mounting rod (92) is fixedly connected to the connecting plate (4). A mounting bolt (93) is threaded onto the mounting base (91).

9. The extrusion apparatus for processing polyethylene granules according to claim 1, characterized in that: A feed hopper (10) is connected through the middle of the upper end face of the material box (1), and an electric telescopic rod (11) is installed inside the cylinder connected to the rear side of the outer wall of the material box (1). The free end of the electric telescopic rod (11) passes through and extends into the interior of the material box (1) and is connected to a push plate (12).

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