A micro-displacement pelletizing device for an extrusion granulator

Abstract

This utility model discloses a micro-gap pelletizing device for an extrusion granulator. The micro-gap pelletizing device includes: a device support, a device motor, a moving pelletizing blade, and a fixed pelletizing blade. One of the cutting edges of the moving pelletizing blade and the fixed pelletizing blade has a concave V-shaped structure, while the other has a convex V-shaped structure. The cutting edges of the moving and fixed pelletizing blades form a cutting gap that is larger in the middle and smaller at the edges. The beneficial effect of this utility model is that during the pelletizing process, the larger cutting gap in the middle and smaller at the edges causes the material strips at the two sides to converge towards the middle, preventing the material strips from escaping outside the shearing area.

Description

Technical Field

[0001] This utility model relates to pelletizing devices, and more particularly, to a micro-distance pelletizing device for an extrusion pelletizer. Background Technology

[0002] Chinese utility model patent CN216732019U, "A fixed-gap pelletizing device for an extrusion granulator," describes a pelletizing device where both the moving and fixed blades have straight cutting edges, forming an equidistant cutting gap. The drawback is that for soft rubber products with low hardness and high tear strength, the material strip may escape outside the shearing area due to the equidistant cutting gap, making complete cutting impossible, and entanglement may also occur. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that the fixed blade spacing pelletizing device used in existing extrusion granulators is subjected to force that escapes outside the shearing zone due to the equal distance between the blades.

[0004] To solve the above-mentioned technical problems, the technical solution is as follows: A micro-gap pelletizing device for an extrusion granulator includes: a device support, a device motor, a moving pelletizing blade, and a fixed pelletizing blade; the device support has a bottom wall and a vertical wall perpendicular to the bottom wall; the device motor is located on the right side of the vertical wall and is fixed to the vertical wall, the device motor has a motor shaft that extends through the vertical wall to the left side; the moving pelletizing blade is located on the left side of the vertical wall and is coaxially fixedly connected to the motor shaft; the fixed pelletizing blade is also located on the left side of the vertical wall and is positioned in front of the moving pelletizing blade; one of the cutting edges of the moving pelletizing blade and the fixed pelletizing blade has a concave V-shaped structure and the other has a convex V-shaped structure, forming a cutting gap that is larger in the middle and smaller at the sides. The beneficial effects are at least as follows: during the pelletizing process, the large gap between the cutters in the middle and the small gap on both sides causes the cut strips on both sides to converge towards the middle, preventing the cut strips from escaping outside the shearing area.

[0005] As a preferred embodiment of the micro-distance pelletizing device for an extrusion granulator, the cutting edge of the moving pelletizing blade is a concave V-shaped structure, while the cutting edge of the fixed pelletizing blade is a convex V-shaped structure.

[0006] As a preferred embodiment of the micro-distance pelletizing device for an extrusion granulator, the cutting edge of the moving pelletizing blade is a convex V-shaped structure, while the cutting edge of the fixed pelletizing blade is a concave V-shaped structure.

[0007] As a preferred embodiment of the micro-cutting device for an extrusion granulator, the maximum position of the cutter gap is 0.15 mm, and the minimum position is 0.1 mm. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention (axisymmetric direction).

[0009] Figure 2 This is a structural schematic diagram (top view) of an embodiment of the present invention.

[0010] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. It should be noted that these descriptions are intended to aid in understanding the present invention but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0012] See Figures 1 to 2 The figure shows a micro-distance pelletizing device for an extrusion granulator. This device is used for pelletizing soft rubber products with low hardness and high tear strength. The device includes: a support 1, a motor 2, a moving pelletizing blade 3, and a fixed pelletizing blade 4.

[0013] The device support 1 has a support bottom wall 11 and a support vertical wall 12 perpendicular to the support bottom wall 11.

[0014] The device motor 2 is located on the right side of the support wall 12. The device motor 2 is fixedly connected to the support wall 12 by a connecting flange and connecting screws. The device motor 2 has a motor shaft. The motor shaft passes through the support wall 12 and extends to the left side of the support wall 12.

[0015] The pelletizing blade 3 is located on the left side of the support wall 12. The pelletizing blade 3 is fixedly connected to the motor shaft on the same axis. That is, the pelletizing blade 3 moves synchronously with the motor shaft. The cutting edge of the pelletizing blade 3 has a concave V-shaped structure.

[0016] The fixed pelletizing blade 4 is also located on the left side of the support wall 12. The fixed pelletizing blade 4 is positioned in front of the moving pelletizing blade 3. The fixed pelletizing blade 4 is fixed to the bottom wall 11 of the support via a fixed blade adjustment seat 5. The blade of the fixed pelletizing blade 4 has a protruding V-shaped structure. Furthermore, the V-angle of the moving pelletizing blade 3 is smaller than the V-angle of the fixed pelletizing blade 4, resulting in a cutting gap 100 (V-shaped structure, mirror symmetry) between the blades of the moving pelletizing blade 3 and the fixed pelletizing blade 4, which is larger in the middle and smaller on both sides. The advantage of this cutting gap 100 is that during pelletizing, the cut material strips on both sides converge towards the middle, preventing the material strips from escaping outside the shearing area and causing entanglement.

[0017] For specific implementation, please refer to Figure 3 The V-angle of the cutting edge of the moving pelletizer 3 is 170°, the V-angle of the cutting edge of the fixed pelletizer 4 is 170.2°, the middle cutting gap (maximum gap) is d1=0.15mm, and the cutting gaps on both sides (minimum gaps) are d2=0.1mm.

[0018] In practice, the fixed blade adjustment seat 5 has a fine-tuning function, which can fine-tune the position of the pelletizing fixed blade 4 by screwing in or out the adjusting bolt.

[0019] In other embodiments, the cutting edge of the moving pelletizer is a convex V-shaped structure, while the cutting edge of the stationary pelletizer is a concave V-shaped structure.

[0020] Preferably, the micro-distance pelletizing device for the extrusion granulator further includes: positioning blocks 6. The positioning blocks 6 are located on opposite sides of the pelletizing moving blade 3. When the positioning blocks 6 abut against the fixed blade adjusting seat 5, the pelletizing moving blade 3 and the pelletizing fixed blade 4 are positioned. A bearing is provided between the positioning blocks 4 and the motor shaft, ensuring that the positioning blocks 6 do not rotate synchronously with the pelletizing moving blade 3.

[0021] The above description merely illustrates the embodiments of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A micro-blade spacing pelletizing device for an extrusion granulator, characterized in that, include: The device includes a support, a motor, a moving pelletizer, and a stationary pelletizer; the support has a bottom wall and a vertical wall perpendicular to the bottom wall. The device motor is located on the right side of the support wall and is fixed to the support wall. The device motor has a motor shaft that extends through the support wall to the left side of the support wall. The moving pelletizer is located on the left side of the support wall and is coaxially and fixedly connected to the motor shaft. The fixed pelletizer is also located on the left side of the support wall and is positioned in front of the moving pelletizer. One of the cutting edges of the moving pelletizer and the fixed pelletizer has a concave V-shaped structure, while the other has a convex V-shaped structure. The cutting edges of the moving pelletizer and the fixed pelletizer together form a cutting gap that is larger in the middle and smaller on both sides.

2. The micro-blade spacing pelletizing device for an extrusion granulator according to claim 1, characterized in that, The cutting edge of the moving pelletizer is a concave V-shaped structure, while the cutting edge of the stationary pelletizer is a convex V-shaped structure.

3. The micro-blade spacing pelletizing device for an extrusion granulator according to claim 1, characterized in that, The cutting edge of the moving pelletizer is a convex V-shaped structure, while the cutting edge of the fixed pelletizer is a concave V-shaped structure.

4. The micro-gap pelletizing device for an extrusion granulator according to any one of claims 1 to 3, characterized in that, The maximum position of the cutter gap is 0.15mm, and the minimum position is 0.1mm.

5. The micro-blade spacing pelletizing device for an extrusion granulator according to claim 4, characterized in that, The pelletizing blade is fixed to the bottom wall of the support by a blade adjusting seat.

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