Granulation cutter head capable of reducing energy loss

Abstract

The utility model discloses a pelletizing cutter head capable of reducing energy loss, which comprises a cutter head, a plurality of flow guide holes are circumferentially arranged on the cutter head at equal intervals, the flow guide holes are arc-shaped, and the center of a circle where the flow guide holes are positioned is positioned on the rotating axis of the cutter head. According to the utility model, the arc-shaped flow guide holes are arranged, so that the action area of cooling water and the flow guide holes can be reduced, the purpose of reducing the resistance of the cooling water to the flow guide holes is achieved, and the energy loss of equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of underwater pelletizers, specifically to a pelletizing disc that reduces energy loss. Background Technology

[0002] The pelletizing disc is a key component of underwater extrusion pelletizers, widely used in the pelletizing process of materials such as plastics and rubber. Existing pelletizing discs typically feature guide holes for cooling water circulation. However, these guide holes are mostly simple cylindrical structures. When the pelletizing disc rotates at high speed, the water flow through these cylindrical guide holes generates significant resistance. This resistance not only increases the energy consumption of the equipment but may also lead to instability in the pelletizing process and a decrease in pellet quality. Utility Model Content

[0003] The purpose of this invention is to provide a pelletizing disc that reduces energy loss. By setting the pelletizing disc into an arc-shaped guide hole, the effective area between the cooling water and the guide hole can be reduced, thereby reducing the resistance of the cooling water to the guide hole and thus reducing the energy loss of the equipment.

[0004] The technical solution adopted by this utility model to solve the above problems is:

[0005] A pelletizing disc for reducing energy loss includes a disc with a plurality of guide holes arranged at equal intervals around its circumference. The guide holes are arc-shaped, and the center of the circle containing the guide holes is located on the rotation axis of the disc.

[0006] In the above technical solution, preferably, the guide hole is inclined, and the angle between the direction of the guide hole toward the front side of the cutter head and the rotation direction of the cutter head is an acute angle.

[0007] In the above technical solution, preferably, a mounting hole is provided in the middle of the cutter head, a guide hole is located on the outside of the mounting hole, and an internal toothed ring is provided on the inner side of the mounting hole.

[0008] In the above technical solution, preferably, the cutter disc is provided with a number of sets of fixing holes for installing the pelletizing blades. The fixing holes are located outside the guide holes, and each set of fixing holes includes an inner fixing hole and an outer fixing hole.

[0009] In the above technical solution, preferably, the straight line connecting the inner fixing hole and the outer fixing hole does not coincide with the rotation axis of the cutter head.

[0010] In the above technical solution, preferably, the rear ends of both the internal fixing hole and the external fixing hole are set as countersunk holes in a stepped shape.

[0011] Compared with the prior art, this utility model has the following advantages and effects:

[0012] This invention increases the cross-sectional area of ​​a single guide hole by making it arc-shaped, thereby increasing the flow rate of cooling water. Compared with existing guide holes that use cylindrical holes, this invention reduces the number of guide holes, thus reducing the total area of ​​the inner surfaces of all guide holes. This reduces the interaction area between the cooling water and the guide holes, thereby reducing the resistance generated by the cooling water on the guide holes, reducing the energy consumption of the equipment, and improving the stability and quality of the pelletizing process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the pelletizing disc for reducing energy loss according to an embodiment of the present invention.

[0014] Figure 2 yes Figure 1 The front view.

[0015] Figure 3 yes Figure 1 A schematic diagram of the back structure.

[0016] The components include: cutter head 1, guide hole 2, mounting hole 3, internal gear ring 4, fixing hole 5, internal fixing hole 51, external fixing hole 52, and countersunk hole 53. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0018] See Figures 1-3 This embodiment provides a pelletizing disc for reducing energy loss, including a disc 1. The disc 1 has a plurality of guide holes 2 arranged at equal intervals around its circumference. The guide holes 2 are arc-shaped, and the center of the circle containing the guide holes 2 is located on the rotation axis of the disc 1.

[0019] This invention increases the cross-sectional area of ​​a single guide hole 2 by setting the guide hole 2 to an arc shape, thereby increasing the flow rate of cooling water. Compared with the existing guide holes 2 using cylindrical holes, this invention can reduce the number of guide holes 2, thus reducing the total area of ​​the inner surface of all guide holes 2. Therefore, it can reduce the interaction area between the cooling water and the guide holes 2, thereby reducing the resistance of the cooling water to the guide holes 2, thus reducing the energy consumption of the equipment and improving the stability and quality of the pelletizing process.

[0020] See Figure 1 , Figure 2 The guide hole 2 is inclined, and the angle between the direction of the guide hole 2 toward the front side of the cutter head 1 and the rotation direction of the cutter head 1 is an acute angle.

[0021] When a cylindrical guide hole 2 is used, the movement direction of part of its inner surface is exactly opposite to the resistance direction of the cooling water, thus maximizing the resistance effect of the cooling water. In this invention, the direction of the guide hole 2 toward the front side of the cutter head 1 is opposite to the rotation direction of the cutter head 1. Figure 2 The angle between the cutter head (which rotates clockwise) and the guide hole 2 is acute. The inner surfaces of both ends of the guide hole 2 are obliquely cut into the cooling water, causing the resistance of the cooling water to the guide hole 2 to be deflected in the opposite direction. Through the principle of force decomposition, the force generated by the resistance of the cooling water in the opposite direction of the movement of the cutter head 1 is less than the resistance of the cooling water, thereby reducing the magnitude of the force on the cutter head 1 in the opposite direction of its movement, and achieving the purpose of reducing the resistance on the cutter head 1. At the same time, when the cutter head 1 rotates, it can generate a pumping effect on the water mixed with plastic particles, so that a large flow of water with a high velocity is formed between the front side of the cutter head 1 and the discharge template. The water flow can wash the granulation surface on the template, so that the plastic particles can be quickly separated from the granulation area, which can effectively reduce the adhesion of plastic particles and ensure the granulation effect.

[0022] See Figure 1 , Figure 2 The cutter head 1 has a mounting hole 3 in the middle, a guide hole 2 is located outside the mounting hole 3, and an internal toothed ring 4 is provided on the inner side of the mounting hole 3.

[0023] Mounting hole 3 is used to mount and fix cutter head 1 to the drive shaft inside the granulator to drive the cutter head 1 to rotate. By setting a gear on the drive shaft that meshes with the internal gear ring 4, the driving force of the drive shaft on the cutter head 1 is evenly distributed on the internal gear ring 4, reducing the possibility of excessive stress at the connection between the drive shaft and the cutter head 1, which could cause damage to the cutter head 1 and the drive shaft, and improving the stability of the rotation of the cutter head 1.

[0024] See Figure 1 , Figure 2 The cutter disc 1 is provided with several sets of fixing holes 5 for installing the pelletizing blade. The fixing holes 5 are located outside the guide hole 2. Each set of fixing holes 5 includes an inner fixing hole 51 and an outer fixing hole 52.

[0025] The pelletizer is connected and fixed to both the inner fixing hole 51 and the outer fixing hole 52 by bolts. The inner fixing hole 51 and the outer fixing hole 52 form two force points between the pelletizer and the pelletizer, which improves the stability of the pelletizer fixing.

[0026] See Figure 2 The straight line connecting the inner fixing hole 51 and the outer fixing hole 52 does not coincide with the rotation axis of the cutter head 1.

[0027] After the pelletizer is fixed on the cutter head 1, the extension direction of the pelletizer does not pass through the center of gravity of the cutter head 1, and the outward extension direction of the pelletizer forms an obtuse angle with the rotation direction of the pelletizer, which improves the deformation resistance of the pelletizer and ensures that the pelletizer can work stably and continuously.

[0028] See Figure 3 The rear ends of both the inner fixing hole 51 and the outer fixing hole 52 are configured as stepped countersunk holes 53.

[0029] When the pelletizer is installed onto the cutter disc 1 using bolts, the bolts are inserted from the rear ends of the inner fixing hole 51 and the outer fixing hole 52, and then screwed into the corresponding two screw holes on the pelletizer. This ensures that the bolt head is located on the rear side of the cutter disc 1, preventing the bolt head from obstructing the cutting operation of the pelletizer if it were located on the front side. The rear ends of the inner fixing hole 51 and the outer fixing hole 52 are countersunk holes 53, allowing the bolt head to enter the countersunk hole 53. This prevents the bolt head from being exposed outside the cutter disc 1 and subjected to the resistance of the cooling water when the bolt rotates with the cutter disc 1, thereby reducing the resistance of the cooling water and the risk of the bolt loosening due to the resistance of the cooling water, ensuring the stable operation of this invention.

[0030] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A pelletizing disc for reducing energy loss, characterized in that: The tool includes a cutter head, on which a plurality of guide holes are arranged at equal intervals around the circumference. The guide holes are arc-shaped, and the center of the circle containing the guide holes is located on the rotation axis of the cutter head.

2. The pelletizing disc with reduced energy loss according to claim 1, characterized in that: The guide hole is inclined, and the angle between the direction of the guide hole toward the front side of the cutter head and the rotation direction of the cutter head is acute.

3. The pelletizing disc with reduced energy loss according to claim 1, characterized in that: The cutter head has a mounting hole in the middle, a guide hole is located outside the mounting hole, and an internal toothed ring is provided on the inner side of the mounting hole.

4. The pelletizing disc with reduced energy loss according to claim 1, characterized in that: The cutter head is provided with several sets of fixing holes for installing the pelletizing blades. The fixing holes are located outside the guide holes, and each set of fixing holes includes an inner fixing hole and an outer fixing hole.

5. The pelletizing disc with reduced energy loss according to claim 4, characterized in that: The straight line connecting the inner and outer fixing holes does not coincide with the rotation axis of the cutter head.

6. The pelletizing disc with reduced energy loss according to claim 4, characterized in that: The rear ends of both the internal and external fixing holes are set as stepped countersunk holes.

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