Granulating template facilitating material drying

Abstract

A granulation template for facilitating material drying. This relates to the field of granulator accessories. It includes a template body with a stepped groove on one side. A fixing hole is provided within the stepped groove, which is adapted to the die head of an extruder. Bolts for fixing the template body and the die head are screwed into the fixing hole. The other side of the template body is near the pelletizing blade. Several forming holes are provided in the middle of the template body, including equal-diameter holes and variable-diameter holes. One end of the equal-diameter hole communicates with the side of the template body with the stepped groove, and the other end of the equal-diameter hole communicates with one end of the variable-diameter hole. The other end of the variable-diameter hole communicates with the other side of the template body. The inner diameter of the variable-diameter hole gradually increases along the material extrusion direction. This application has the characteristics of improving the surface uniformity of the material after cutting and reducing the temperature of the material before cutting, thereby improving drying efficiency.

Description

Technical Field

[0001] This application relates to the field of granulator accessories, specifically to a granulation template that facilitates material drying. Background Technology

[0002] The granulation die (also known as the die head, perforated plate, or sieve plate) is the core forming component of an extrusion granulator, directly determining the shape, size, and output of the final granules. It functions like a precision "sieve" or "nozzle plate," forcing molten material through small holes in the die under the push of the extruder screw, forming continuous thin strips, which are then cut into granules by a rotating cutter.

[0003] Chinese patent document CN222645297U discloses a detachable granulation template for a plastic extrusion granulator, specifically disclosing an inner core. The inner core has a middle ring on its outer edge, and the middle ring has an outer ring on its outer edge. Several granulation belts arranged in a ring and connected end-to-end are arranged on one side of the middle ring. An installation structure is also disclosed, located inside the granulation belts, facilitating the installation and disassembly of the granulation belts. This installation structure facilitates the installation and disassembly of the granulation belts. The expansion section, threaded rod, and threaded hole work together to achieve rapid installation and disassembly. Compared to existing structures, this method allows for quick installation and disassembly when the granulation belt is damaged, simplifying operation. Furthermore, the cooperation of the limiting block, connecting strip, spring, mounting plate, connecting plate, and limiting hole ensures the threaded rod is self-locking during use, preventing it from falling off.

[0004] However, in the aforementioned patent, the granulation holes on the granulation belt are of equal diameter. After the material is extruded through the granulation holes, it remains at a relatively high temperature, which is not conducive to subsequent cooling and drying. Utility Model Content

[0005] To overcome the problem of slow temperature reduction after material extrusion in existing technologies, this application provides a granulation template that facilitates material drying.

[0006] This application adopts the following technical solution: a granulation template for easy material drying, including a template body, a stepped groove on one side of the template body, a fixing hole in the stepped groove, the stepped groove being adapted to the die head of an extruder, and a bolt for fixing the template body and the die head being screwed into the fixing hole, the other side of the template body being close to the pelletizing knife, and a plurality of forming holes in the middle of the template body, the forming holes including equal diameter holes and variable diameter holes;

[0007] One end of the equal diameter hole is connected to the side of the template body with the stepped groove, the other end of the equal diameter hole is connected to one end of the variable diameter hole, the other end of the variable diameter hole is connected to the other side of the template body, and the inner diameter of the variable diameter hole gradually increases along the material extrusion direction.

[0008] Optionally, the length of the variable diameter hole is greater than the length of the equal diameter hole, the maximum inner diameter of the variable diameter hole is greater than the inner diameter of the equal diameter hole, and the maximum inner diameter of the variable diameter hole is not greater than 1.5 times the inner diameter of the equal diameter hole.

[0009] Optionally, the template body has an annular groove on the side facing away from the step groove, and a pressure strip is adapted to be provided in the annular groove, with the top of the pressure strip flush with the opening of the annular groove.

[0010] The pressure strip is provided with several receiving grooves, and a ceramic piece is inserted into the receiving groove. The top of the ceramic piece protrudes to the outside of the receiving groove.

[0011] Optionally, the bottom of the annular groove is provided with a plurality of threaded holes, which are arranged at intervals along the circumferential direction. A countersunk screw is provided on the pressure strip, which can be adapted to be screwed into the threaded hole and used to lock the pressure strip.

[0012] Optionally, the top of the countersunk screw is flush with the top of the pressure strip, and a receiving groove is provided on both sides of the countersunk screw. The top outer edge of the ceramic piece is chamfered, and the lower part of the chamfer is located inside the receiving groove.

[0013] Compared with the prior art, this application has the following advantages:

[0014] 1. The forming holes for material passage consist of interconnected equal-diameter holes and variable-diameter holes. In this way, the overall volume of the material increases after entering the variable-diameter hole with a larger inner diameter. During this process, the temperature of the material decreases, thereby achieving the cooling effect of the material before extrusion and effectively improving the cooling and drying efficiency after pelleting.

[0015] 2. The pressure bar is equipped with protruding ceramic plates, which ensures that the pelletizing knife can reliably fit with the pressure bar, while reducing wear due to the self-lubricating effect of the ceramic plates. Attached Figure Description

[0016] Figure 1 This is an illustrative three-dimensional representation of the present application. Figure 1 ;

[0017] Figure 2 This is an illustrative three-dimensional representation of the present application. Figure 2 ;

[0018] Figure 3 This is a reference diagram of the explosion state of this application;

[0019] Figure 4 This is a cross-sectional view of the internal structure of this application;

[0020] In the diagram: 1. Template body; 11. Step groove; 110. Fixing hole; 12. Forming hole; 121. Equal diameter hole; 122. Variable diameter hole; 13. Annular groove; 130. Threaded hole; 14. Pressure strip; 141. Receiving groove; 142. Ceramic plate; 1420. Chamfer; 143. Countersunk screw. Detailed Implementation

[0021] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] like Figure 1-4 As shown, a granulation template for facilitating material drying includes a template body 1. One side of the template body 1 has a stepped groove 11, within which a fixing hole 110 is provided. The stepped groove 11 is adapted to the die head of an extruder. A bolt for fixing the template body 1 and the die head is screwed into the fixing hole 110. In other words, the template body 1 can be reliably installed and fixed through the cooperation of the stepped groove 11 and the bolt. The other side of the template body 1 is close to the pelletizing blade. The middle of the template body 1 has several forming holes 12, including equal-diameter holes 121 and variable-diameter holes 122. One end of the equal-diameter hole 121 communicates with the side of the template body 1 with the stepped groove 11, and the other end of the equal-diameter hole 121 communicates with one end of the variable-diameter hole 122. The other end of the variable-diameter hole 122 communicates with the other side of the template body 1. The inner diameter of the variable-diameter hole 122 gradually increases along the material extrusion direction.

[0023] When the material is extruded from the die head into the main body of the template 1, it first enters the equal diameter hole 121. After the material flows from the equal diameter hole 121 into the variable diameter hole 122, the space available for material flow increases, thereby reducing the flow rate of the material. At the same time, the temperature of the material gradually decreases during its flow in the variable diameter hole 122. Thus, when the material is discharged from the variable diameter hole 122 and granulated by the cutting blade, the temperature of the material is lower than the temperature when it first entered the equal diameter hole 121, which is beneficial for the subsequent drying operation.

[0024] The length of the variable diameter hole 122 is greater than the length of the equal diameter hole 121, and the maximum inner diameter of the variable diameter hole 122 is greater than the inner diameter of the equal diameter hole 121. Furthermore, the maximum inner diameter of the variable diameter hole 122 is not greater than 1.5 times the inner diameter of the equal diameter hole 121. In this way, the flow time of the material in the variable diameter hole 122 will be greater than the flow time of the material in the equal diameter hole 121. At the same time, by controlling the diameter ratio between the variable diameter hole 122 and the equal diameter hole 121, it is ensured that the material can be cut into spheres with uniform surface by the pelletizing knife, and the probability of material sticking together is reduced, thereby effectively improving the drying efficiency.

[0025] The template body 1 has an annular groove 13 on the side facing away from the stepped groove 11. A pressure strip 14 is adapted to be provided in the annular groove 13, and the top of the pressure strip 14 is flush with the opening of the annular groove 13. The pressure strip 14 has several receiving grooves 141, and ceramic pieces 142 are inserted into the receiving grooves 141. The top of the ceramic pieces 142 protrudes to the outside of the receiving grooves 141. The bottom of the annular groove 13 has several threaded holes 130, which are arranged at intervals along the circumference. A countersunk screw 143 passes through the pressure strip 14 and can be adapted to be screwed into the threaded holes 130 to lock the pressure strip 14. Ceramic discs 142 are mounted on pressure strips 14, which are fixed in annular grooves 13 by countersunk screws 143. Since each countersunk screw 143 has a ceramic disc 142 on both sides, the pelletizer will not come into contact with the countersunk screw during rotation, thus protecting the pelletizer.

[0026] The top of the countersunk screw 143 is flush with the top of the pressure strip 14. Each side of the countersunk screw 143 is provided with a receiving groove 141. The outer edge of the top of the ceramic sheet 142 is provided with a chamfer 1420. The lower part of the chamfer 1420 is located inside the receiving groove 141. The chamfer 1420 ensures that the ceramic sheet 142 is slightly convex. Specifically, the height of the ceramic sheet 142 protruding to the outside of the receiving groove 141 does not exceed 0.2mm. In this way, while providing lubrication for the pelletizing blade, it also prevents the ceramic sheet 142 from colliding with the pelletizing blade.

[0027] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A granulation template for facilitating material drying, comprising a template body (1), wherein a stepped groove (11) is provided on one side of the template body (1), a fixing hole (110) is provided in the stepped groove (11), the stepped groove (11) is adapted to the die head of an extruder, and a bolt for fixing the template body (1) and the die head is screwed into the fixing hole (110), and the other side of the template body (1) is close to the pelletizing knife, characterized in that, The template body (1) has a plurality of forming holes (12) in the middle, the forming holes (12) including equal diameter holes (121) and variable diameter holes (122); One end of the equal diameter hole (121) is connected to the side of the template body (1) with the stepped groove (11), the other end of the equal diameter hole (121) is connected to one end of the variable diameter hole (122), the other end of the variable diameter hole (122) is connected to the other side of the template body (1), and the inner diameter of the variable diameter hole (122) gradually increases along the material extrusion direction.

2. The granulation template for facilitating material drying according to claim 1, characterized in that, The length of the variable diameter hole (122) is greater than the length of the equal diameter hole (121), the maximum inner diameter of the variable diameter hole (122) is greater than the inner diameter of the equal diameter hole (121), and the maximum inner diameter of the variable diameter hole (122) is not greater than 1.5 times the inner diameter of the equal diameter hole (121).

3. The granulation template for facilitating material drying according to claim 1, characterized in that, The template body (1) has an annular groove (13) on the side facing away from the step groove (11), and a pressure strip (14) is adapted to be provided in the annular groove (13). The top of the pressure strip (14) is flush with the opening of the annular groove (13). The pressure strip (14) is provided with a plurality of receiving grooves (141), and a ceramic piece (142) is inserted in the receiving groove (141). The top of the ceramic piece (142) protrudes to the outside of the receiving groove (141).

4. The granulation template for facilitating material drying according to claim 3, characterized in that, The bottom of the annular groove (13) is provided with a plurality of threaded holes (130), which are arranged at intervals along the circumferential direction. A countersunk screw (143) is provided on the pressure strip (14), which can be adapted to be screwed into the threaded hole (130) and used to lock the pressure strip (14).

5. The granulation template for facilitating material drying according to claim 4, characterized in that, The top of the countersunk screw (143) is flush with the top of the pressure strip (14). The countersunk screw (143) has a receiving groove (141) on both sides. The top outer edge of the ceramic piece (142) is chamfered (1420), and the lower part of the chamfer (1420) is located inside the receiving groove (141).

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