Hot melt extrusion granulation apparatus

Abstract

This invention relates to the field of granulation technology and discloses a hot melt extrusion granulation device, including an adjustment box connected to a granulator. An extrusion port is provided on one side of the adjustment box. A first orifice plate and a second orifice plate, adjustable in position, are slidably arranged inside the adjustment box. A core rod is slidably arranged inside the adjustment box, with a sealing ring fixed to its end. A first cleaning plate and a second cleaning plate are slidably arranged outside the sealing ring. A drive rod capable of left and right movement is provided inside the adjustment box. A sleeve is fixed on the circumference of the core rod, and a ring is slidably arranged on the outer surface of the sleeve. The drive rod is fixed to the ring. In this technical solution, the positions of the first and second orifice plates with different orifice diameters can be switched, facilitating the processing of granules with different orifice diameters according to requirements. This simplifies operation, reduces downtime, and improves work efficiency.

Description

Technical Field

[0001] This invention relates to the field of granulation technology, specifically to a hot melt extrusion granulation device. Background Technology

[0002] Hot melt extrusion granulation equipment is a continuous processing device that heats and melts solid materials, conveys them through a screw, mixes and homogenizes them, and then extrudes and cuts them into granules of a specific shape through a die. Its core working principle is to use the rotation of the screw in the barrel to convey, compress, melt, mix and pressurize the material, so that the material reaches a uniform plasticized state under high temperature and high pressure. Then, it is extruded through a die with a specific aperture and shape, and finally the extruded melt strip or melt curtain is cut into granular products by a pelletizing device.

[0003] Traditional hot melt extrusion granulation equipment requires manual replacement of orifice plates with different orifice diameters when extruding granules of different diameters. This manual replacement necessitates machine downtime, increasing operational difficulty and reducing work efficiency. To address this, a granulation device was designed that can automatically replace orifice plates with different orifice diameters as needed while minimizing downtime. However, when replacing orifice plates with different orifice diameters, material from the previous extrusion can easily remain inside the extrusion holes on the orifice plate. If this residue is not cleaned in time, it will affect the quality of subsequent material extrusions, thereby reducing the granulation effect. Summary of the Invention

[0004] This invention provides a hot melt extrusion granulation device. After the positions of the first and second perforated plates are adjusted, the extrusion holes of the first and second perforated plates can be cleaned, which solves the problem mentioned in the background art that the extrusion holes on the perforated plates are prone to retain the material from the previous extrusion. If the material is not cleaned in time, the residual material will affect the quality of subsequent material extrusion, thereby reducing the granulation effect.

[0005] The present invention provides the following technical solution: a hot melt extrusion granulation device, including an adjustment box connected to a granulator, an extrusion port is provided on one side of the adjustment box, a first orifice plate and a second orifice plate that can be adjusted in position are slidably arranged inside the adjustment box, a core rod is slidably arranged inside the adjustment box, a sealing ring is fixed at the end of the core rod, and a first cleaning plate and a second cleaning plate are slidably arranged outside the sealing ring;

[0006] The regulating box is equipped with a drive rod that can move left and right. A sleeve is fixed on the circumference of the core rod. A ring is slidably arranged on the outer surface of the sleeve. The drive rod is fixed to the ring. A transmission rod is fixed on the surface of the first cleaning plate and the second cleaning plate. The end of the transmission rod is slidably connected to the ring. A first sliding rod is slidably arranged inside the ring. One end of the first sliding rod is fixed to the transmission rod. A first sliding groove is opened inside the sleeve. The first cleaning plate and the second cleaning plate slide inward along the first sliding groove via the first sliding rod to retract.

[0007] As an optional embodiment of the hot melt extrusion granulation equipment of the present invention, the lower surface of the drive rod is fixed with a protrusion for abutting against the sleeve, and the surface of the core rod is elastically provided with a limiting block for abutting against the protrusion.

[0008] As an optional solution of the hot melt extrusion granulation equipment of the present invention, a first limiting ball is fixed at the end of the first slide bar, and a first track groove is provided inside the first slide groove for the first limiting ball to slide. The first track groove includes a first horizontal part, a first inclined part and a second horizontal part that are connected to each other.

[0009] As an optional embodiment of the hot melt extrusion granulation equipment of the present invention, the surface of the core rod is provided with a first insertion hole, the interior of the adjustment box is elastically provided with an insertion rod for inserting into the first insertion hole, the surface of the drive rod is provided with a second sliding groove for the insertion rod to slide, the surface of the insertion rod is fixed with a sliding protrusion, and the inner wall of the second sliding groove is provided with a second trajectory groove for the sliding protrusion to slide.

[0010] As an optional embodiment of the hot melt extrusion granulation equipment of the present invention, the second track groove includes a third horizontal part, a first vertical part, a fourth horizontal part and a second inclined part that are connected together, and a first rotating plate is elastically provided at the connection between the second inclined part and the third horizontal part.

[0011] As an optional embodiment of the hot melt extrusion granulation equipment of the present invention, a first protruding plate is fixed on the outer surface of the insert rod, and a first spring is fixed between the first protruding plate and the inner wall of the adjustment box.

[0012] As an optional embodiment of the hot melt extrusion granulation equipment of the present invention, a cleaning ring is fixed inside the regulating box. The cleaning ring has a circular hole for cleaning the surface of the first cleaning plate. A scraper for cleaning the surface of the second cleaning plate is slidably arranged on the inner wall of the circular hole. A protruding edge is fixed at the bottom end of the scraper.

[0013] As an optional embodiment of the hot melt extrusion granulation equipment of the present invention, a moving groove is provided on the cleaning ring, a horizontal plate is slidably arranged in the moving groove, a connecting rod is fixed on the surface of the horizontal plate, the connecting rod is fixed to the scraper, a pull rod for pulling the horizontal plate is fixed on the surface of the transmission rod, a second limiting ball is fixed at the end of the pull rod, and a limiting groove for the second limiting ball to slide is provided on the lower surface of the horizontal plate.

[0014] As an optional solution of the hot melt extrusion granulation equipment of the present invention, the surface of the core rod is provided with a second insertion hole, and the second track groove further includes a pull-back part, a second vertical part, a fifth horizontal part and a third inclined part that are connected to the third horizontal part, and a second rotating plate is elastically provided at the connection between the third inclined part and the third horizontal part.

[0015] As an optional embodiment of the hot melt extrusion granulation equipment of the present invention, the inside of the regulating box is provided with a shifting groove, a sealing ring is fixed on the outer side of the first orifice plate and the second orifice plate, a second convex plate is fixed on the outer surface of the sealing ring, a servo electric cylinder is fixed on the outer surface of the regulating box, and the output end of the servo electric cylinder is fixed to the second convex plate.

[0016] The present invention has the following beneficial effects:

[0017] 1. This hot melt extrusion granulation equipment, by setting a sliding and interchangeable first and second orifice plates in the regulating box, realizes the rapid switching of orifice plates with different orifice diameters, without the need for manual shutdown for disassembly and replacement, which significantly reduces the difficulty of operation and greatly reduces downtime, thereby effectively improving the granulation efficiency and facilitating the flexible processing of granules with different orifice diameters according to production needs.

[0018] To address the issue of residual material in the extrusion orifice during plate replacement affecting subsequent granulation quality, a new method is implemented. This method involves pushing the circular plate, drive rod, and connected sealing ring, first cleaning plate, and second cleaning plate to the right. During this movement, the first and second cleaning plates form a complete circular structure, working in conjunction with the sealing ring to effectively push out residual material inside the extrusion orifice. This achieves automatic cleaning of the extrusion orifice, ensuring the quality of subsequent material extrusion and improving the granulation effect.

[0019] 2. In the process of the first cleaning plate and the second cleaning plate resetting to the left, the first limiting ball slides along the first track groove, so that the cleaning plate first moves out from the outside of the sealing ring and is misaligned, and then shrinks downward to reduce the aperture. This ensures that the cleaning plate will not stick the residual material to the inner wall of the extrusion hole again when resetting, effectively avoiding secondary pollution and thus improving the cleaning effect of the extrusion hole.

[0020] 3. In response to the potential mutual interference during shrinkage, the hot melt extrusion granulation equipment designs the first track grooves driving the two plates as first track groove a and first track groove b, and sets the first inclined parts of the two plates to be staggered. This allows the second cleaning plate to shrink first during the shrinkage process, followed by the first cleaning plate, and finally shrinking to the preset state. This effectively avoids mechanical interference between the two cleaning plates during the shrinkage action, ensuring the smoothness of the shrinkage process and the stability of the structure.

[0021] 4. In this hot melt extrusion granulation equipment, after the first and second cleaning plates shrink and move out of the extrusion hole and reset, the drive rod continues to move to the left, causing the shrunken first and second cleaning plates to slide to the left. During this process, the inner wall of the round hole can scrape off the residual material on the surface of the first cleaning plate, while the pre-extended scraper can scrape off the residual material on the surface of the second cleaning plate, thereby automatically completing the cleaning work of the two cleaning plates, ensuring that the surface of the cleaning plates is clean, and avoiding residual material from affecting subsequent use. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a cross-sectional view of the first and second perforated plates in this invention.

[0024] Figure 3 This is a top sectional view of the regulating box section in this invention.

[0025] Figure 4 This is a three-dimensional structural diagram of the second perforated plate portion in this invention.

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the structure of the first and second cleaning plates.

[0027] Figure 6 For the present invention Figure 5 Another structural diagram of the drive rod section from another perspective.

[0028] Figure 7 This is a cross-sectional view of the drive rod, core rod, and sleeve in this invention.

[0029] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0030] Figure 9 For the present invention Figure 7 Enlarged view of section B in the middle.

[0031] Figure 10 For the present invention Figure 7 Enlarged view of point C.

[0032] Figure 11 This is a schematic diagram of the structure of the first and second cleaning plates before shrinkage in this invention.

[0033] Figure 12 This is a schematic diagram of the structure of the first and second cleaning plates after shrinkage in this invention.

[0034] Figure 13 This is a schematic diagram comparing the structures of the first trajectory groove a and the first trajectory groove b in this invention.

[0035] Figure 14 This is a schematic diagram of the structure of the circular hole and scraper in this invention.

[0036] Figure 15 This is a schematic diagram of the structure of the second track groove portion of the present invention.

[0037] Figure 16 This is a schematic diagram of the structure of the first rotating plate part in this invention.

[0038] In the diagram: 1. Granulator; 2. Regulating box; 3. Extrusion port; 4. First orifice plate; 5. Second orifice plate; 51. Extrusion hole; 6. Core rod; 7. Sealing ring; 8. First cleaning plate; 9. Second cleaning plate; 10. Drive rod; 11. Sleeve; 12. Ring; 13. Transmission rod; 14. First slide rod; 15. First slide groove; 16. Protrusion; 17. Limiting block; 18. First limiting ball; 19. First track groove; 191. First horizontal part; 192. First inclined part; 193. Second horizontal part; 1901. First track groove a; 1902. First track groove b; 20. First insertion hole; 21. Insert rod; 22. Second slide groove; 23. Sliding protrusion; 24. Second track groove; 241. Pull-back part; 242. Third horizontal part; 243. First vertical part; 244. Fourth horizontal part; 2 45. Second inclined section; 246. First rotating plate; 247. Rotating groove; 248. Rotating rod; 249. Torsion spring; 2410. Limiting block; 2411. Abutting block; 2412. Second vertical section; 2413. Fifth horizontal section; 2414. Third inclined section; 2415. Second rotating plate; 25. First convex plate; 26. First spring; 27. Cleaning ring; 28. Round hole; 29. ​​Scraper 30. Raised edge; 31. Moving groove; 32. Horizontal plate; 33. Connecting rod; 34. Pull rod; 35. Second limit ball; 36. Limiting slide groove; 37. Shifting groove; 38. Sealing ring; 39. Second raised plate; 40. Servo electric cylinder; 41. Second spring; 42. Support rod; 43. Electric push rod; 44. Round plate; 45. Receiving groove; 46. Positioning block; 47. Damping ring; 48. Second insertion hole. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figures 1-16 A hot melt extrusion granulation device includes an adjustment box 2 connected to a granulator 1. An extrusion port 3 is provided on one side of the adjustment box 2. A first orifice plate 4 and a second orifice plate 5 that can be adjusted in position are slidably arranged inside the adjustment box 2. A core rod 6 is slidably arranged inside the adjustment box 2. A sealing ring 7 is fixed at the end of the core rod 6. A first cleaning plate 8 and a second cleaning plate 9 are slidably arranged on the outside of the sealing ring 7.

[0041] The regulating box 2 is equipped with a drive rod 10 that can move left and right. A sleeve 11 is fixed on the circumference of the core rod 6. A ring 12 is slidably arranged on the outer surface of the sleeve 11. The drive rod 10 is fixed to the ring 12. A transmission rod 13 is fixed on the surface of the first cleaning plate 8 and the second cleaning plate 9. The end of the transmission rod 13 is slidably connected to the ring 12. A first slide rod 14 is slidably arranged inside the ring 12. One end of the first slide rod 14 is fixed to the transmission rod 13. A first groove 15 is opened inside the sleeve 11. The first cleaning plate 8 and the second cleaning plate 9 slide inward along the first groove 15 through the first slide rod 14 to retract.

[0042] The regulating box 2 has a shifting groove 37 inside. A sealing ring 38 is fixed on the outside of the first orifice plate 4 and the second orifice plate 5. A second convex plate 39 is fixed on the outer surface of the sealing ring 38. A servo electric cylinder 40 is fixed on the outer surface of the regulating box 2. The output end of the servo electric cylinder 40 is fixed to the second convex plate 39.

[0043] In this technical solution, during granulation, the material is first extruded through the first perforated plate 4 and the extrusion port 3 by the granulator 1, and then the extruded material is cut into granules by the cutting blade set on one side of the extrusion port 3, thereby completing the granulation work. The granulator 1 and the granulation principle are existing technologies and are not the innovation of this application, so they will not be described in detail.

[0044] During granulation, it is sometimes necessary to extrude granules with different pore sizes. This requires disassembling the first orifice plate 4 and replacing it with a second orifice plate 5 of a different pore size. Traditionally, this is done manually by stopping the machine to replace the plate, which not only increases operational difficulty but also reduces work efficiency. To address this issue, a regulating box 2 is connected to the granulator 1, and the first orifice plate 4 and the second orifice plate 5 are installed inside the regulating box 2. Figure 2As shown, a support rod 42 is fixed between the left and right convex plates. When it is necessary to replace the second perforated plate 5 with a different aperture, the servo cylinder 40 pushes the left second convex plate 39 to the right. The left convex plate drives the right convex plate to move to the right synchronously via the support rod 42. The second convex plate 39 drives the first perforated plate 4 and the second perforated plate 5 to slide to the right along the switching groove 37, so that the first perforated plate 4 moves to the rightmost position and the second perforated plate 5 moves to the position of the first perforated plate 4, thereby replacing it with the second perforated plate 5 for extrusion. When it is necessary to replace the first perforated plate 4 with a different aperture, the servo cylinder 40 resets, and the first perforated plate 4 and the second perforated plate 5 move to the left synchronously, thereby replacing it with the first perforated plate 4 for extrusion. This makes it convenient to process granules with different apertures according to requirements, facilitating operation, reducing downtime, and improving work efficiency.

[0045] The sealing ring 38 is sealed to the inner wall of the regulating box 2, so that the sealing state can be maintained when the first orifice plate 4 and the second orifice plate 5 are replaced.

[0046] When replacing the first orifice plate 4 and the second orifice plate 5, material from the previous extrusion can easily remain in the extrusion holes 51 on the first and second orifice plates 4 and 5. If this material is not cleaned in time, it will affect the quality of subsequent material extrusion, thus reducing the granulation effect. To address this issue, an electric push rod 43 is installed inside the regulating box 2. A circular plate 44 is fixed to the output end of the electric push rod 43. The circular plate 44 is slidably disposed inside the regulating box 2. The end of the drive rod 10 is fixed to the circular plate 44. After the first orifice plate 4 and the second orifice plate 5 are replaced, the electric push rod 43 pushes the circular plate 44 to the right. Figure 4 and Figure 5 As shown, the circular plate 44 drives the drive rod 10 to move to the right, the drive rod 10 drives the ring 12 to move to the right, and through the abutment of the protrusion 16 and the sleeve 11, the drive rod 10 drives the core rod 6 to move to the right, the core rod 6 drives the sealing ring 7 to move to the right, and the ring 12 drives the first cleaning plate 8 and the second cleaning plate 9 to move to the right through the transmission rod 13. At this time, the first cleaning plate 8 and the second cleaning plate 9 form a complete circular structure. During the process of the sealing plate, the first cleaning plate 8 and the second cleaning plate 9 moving to the right, the residual material inside the extrusion hole 51 is pushed out, thereby facilitating the cleaning of the extrusion hole 51.

[0047] The regulating box 2 has a receiving trough 45 inside, which is used to collect the discharged residual material for convenient subsequent unified processing.

[0048] In Example 2, after the first cleaning plate 8 and the second cleaning plate 9 clean the extrusion hole 51, some material remains on the outer surfaces of the first cleaning plate 8 and the second cleaning plate 9. Since the first cleaning plate 8 and the second cleaning plate 9 are in contact with the inner wall of the extrusion hole 51, some material remains on their outer surfaces when they are reset. A small amount of residual material also adheres again to the extrusion hole 51, thus reducing the cleaning effect. This example is an improvement on Example 1 to address this problem. For details, please refer to [link / reference]. Figures 1-16 The lower surface of the drive rod 10 is fixed with a protrusion 16 for abutting against the sleeve 11, and the surface of the core rod 6 is elastically provided with a limiting block 17 for abutting against the protrusion 16.

[0049] The end of the first slide bar 14 is fixed with a first limiting ball 18. The interior of the first slide groove 15 is provided with a first track groove 19 for the first limiting ball 18 to slide. The first track groove 19 includes a first horizontal part 191, a first inclined part 192 and a second horizontal part 193 that are connected together.

[0050] The core rod 6 has a first insertion hole 20 on its surface. The adjustment box 2 is elastically provided with a rod 21 for insertion into the first insertion hole 20. The drive rod 10 has a second sliding groove 22 for the rod 21 to slide on its surface. The rod 21 has a sliding protrusion 23 fixed on its surface. The inner wall of the second sliding groove 22 has a second track groove 24 for the sliding protrusion 23 to slide on its surface.

[0051] The second track groove 24 includes a third horizontal part 242, a first vertical part 243, a fourth horizontal part 244 and a second inclined part 245 connected together, and a first rotating plate 246 is elastically provided at the connection between the second inclined part 245 and the third horizontal part 242.

[0052] A first protruding plate 25 is fixed to the outer surface of the insertion rod 21, and a first spring 26 is fixed between the first protruding plate 25 and the inner wall of the adjustment box 2.

[0053] In this technical solution, when the first cleaning plate 8 and the second cleaning plate 9 need to be reset to the left, the position of the core rod 6 remains unchanged (see the next section for the principle), the drive rod 10 is reset to the left, the drive rod 10 pulls the ring 12 to move to the left on the sleeve 11, and the ring 12 drives the first sliding rod 14 to move to the left along the first sliding groove 15, such as... Figure 7 and Figure 8As shown, the first sliding rod 14 drives the first limiting ball 18 to slide along the first track groove 19. First, the first limiting ball 18 moves to the left along the first horizontal part 191. The first limiting ball 18 drives the first sliding rod 14 to move to the left. The first sliding rod 14 drives the transmission rod 13 to move to the left. The transmission rod 13 drives the first cleaning plate 8 and the second cleaning plate 9 to move to the left, so that the first cleaning plate 8 and the second cleaning plate 9 move out from the outside of the sealing ring 7, causing the first cleaning plate 8 and the second cleaning plate 9 to be misaligned with the sealing ring 7. Then, the first limiting ball 18 slides down along the first inclined part 192, so that the first limiting ball 18 drives the first sliding rod 14 to move down. The first sliding rod 14 drives the transmission rod 13 to move down. The transmission rod 13 drives the first cleaning plate 8 and the second cleaning plate 9 to retract, thereby reducing the aperture of the first cleaning plate 8 and the second cleaning plate 9. This prevents the residual material from being cleaned from adhering to the inner wall of the extrusion hole 51 when the first cleaning plate 8 and the second cleaning plate 9 are reset, thereby improving the cleaning effect.

[0054] The relative motion process between the core rod 6 and the drive rod 10 is as follows: First, when cleaning the extrusion hole 51, such as... Figure 7 As shown, the drive rod 10 drives the core rod 6 to move synchronously to the right until the first cleaning plate 8 and the second cleaning plate 9 have finished cleaning the extrusion hole 51. During the process of the drive rod 10 driving the core rod 6 to move synchronously to the right, the insertion rod 21 slides along the second sliding groove 22, causing the sliding protrusion 23 to slide along the second track groove 24. The sliding protrusion 23 first slides to the left along the third horizontal part 242 until it slides to the first vertical part 243, where the first spring 26 releases its force. At this time, the first insertion hole 20 moves to the bottom end of the insertion rod 21. Through the release of the force by the first spring 26, the sliding... The protrusion 23 slides along the first vertical part 243. The sliding protrusion 23 drives the insertion rod 21 to move downward and insert the insertion rod 21 into the first insertion hole 20, which restricts the core rod 6 so that the core rod 6 cannot continue to move. When the first cleaning plate 8 and the second cleaning plate 9 need to be moved to the left to reset, since the core rod 6 cannot continue to move at this time, only the drive rod 10 moves to the left, so that the drive rod 10 moves to the left relative to the core rod 6, thereby driving the ring 12 to move to the left along the sleeve 11, thereby completing the shrinkage of the first cleaning plate 8 and the second cleaning plate 9.

[0055] After the first cleaning plate 8 and the second cleaning plate 9 retract, the drive rod 10 continues to move to the left. The sliding protrusion 23 slides along the fourth horizontal part 244 to the second inclined part 245 and slides along the second inclined part 245, causing the insertion rod 21 to move upward, so that the first spring 26 is stretched and stored, pulling the insertion rod 21 out from the first insertion hole 20. At this time, the protrusion 16 moves to the left and abuts against the limiting block 17. When the drive rod 10 continues to move to the left to reset, through the abutment action of the protrusion 16 and the limiting block 17, the drive rod 10 drives the core rod 6 to move to the left to reset synchronously, thereby driving the retracted first cleaning plate 8, second cleaning plate 9 and sealing ring 7 to move to the left to reset.

[0056] To facilitate cleaning around the extrusion orifice 51, the first cleaning plate 8 and the second cleaning plate 9 need to be positioned on the outer side of the sealing ring 7 as follows: Figure 11 As shown, the structure is a complete circle. Therefore, when the first cleaning plate 8 and the second cleaning plate 9 retract, they will affect each other, causing the first cleaning plate 8 and the second cleaning plate 9 to fail to retract normally. To address this problem, as follows... Figure 13 As shown, the first track groove 19 driving the first cleaning plate 8 and the second cleaning plate 9 is divided into: through the first track groove a1901 and the first track groove b1902, the first inclined portions 192 in the first track groove a1901 and the first track groove b1902 are misaligned. When the first cleaning plate 8 and the second cleaning plate 9 retract, the second cleaning plate 9 retracts first, and then the first cleaning plate 8 retracts, finally retracting into Figure 12 This configuration avoids the problem of the first cleaning plate 8 and the second cleaning plate 9 interfering with each other during contraction.

[0057] In this technical solution, a damping ring 47 is provided between the core rod 6 and the inner wall of the adjusting box 2. The core rod 6 will not move arbitrarily when there is no external force, thereby increasing the precision of the structural fit. Furthermore, in the second trajectory groove 24 of this application, the first rotating plate 246 ensures that the sliding protrusion 23 can only slide to the left along the third horizontal part 242 to the first vertical part 243, and will not slide to the second inclined part 245. This is because the drive rod 10 has a rotating groove 247 inside, and a rotating rod 248 is rotatably mounted on the inner wall of the rotating groove 247. The first rotating plate 246 is fixed on the circumference of the rotating rod 248. A torsion spring 249 is fitted onto plate 8. One end of the torsion spring 249 is fixed to the inner wall of the rotating groove 247, and the other end is fixed to the surface of the first rotating plate 246. An abutment block 2411 is fixed to the surface of the first rotating plate 246, and an abutment block 2411 is fixed to the inner wall of the rotating groove 247. When the sliding protrusion 23 slides upward along the second inclined groove, the sliding protrusion 23 abuts against the first rotating plate 246, causing the first rotating plate 246 to rotate counterclockwise. The torsion spring 249 stores force. When the sliding protrusion 23 loses contact with the first rotating plate 246, the torsion spring 249 releases force, and the first rotating plate 246 returns to its original position. Figure 16 In the state shown, when the sliding protrusion 23 slides to the left along the third horizontal portion 242, the first rotating plate 246 cannot be pressed down due to the contact of the limiting block 2410 against the abutting block 2411. Figure 16 The sliding protrusion 23 is rotated clockwise in the state shown, so that the sliding protrusion 23 will not slide into the second inclined part 245, thereby realizing the cyclic reciprocating motion of the sliding protrusion 23.

[0058] In Example 3, when the first cleaning plate 8 and the second cleaning plate 9 are removed from the extrusion hole 51, their contraction prevents them from contacting the inner wall of the extrusion hole 51. This results in residual material remaining on their surfaces, affecting the cleaning effect on the extrusion hole 51 in subsequent uses. This example addresses this issue by improving upon Example 2. For details, please refer to Example 2. Figures 1-16 The inside of the regulating box 2 is fixed with a cleaning ring 27. The cleaning ring 27 has a round hole 28 for cleaning the surface of the first cleaning plate 8. A scraper 29 for cleaning the surface of the second cleaning plate 9 is slidably arranged on the inner wall of the round hole 28. A protruding edge 30 is fixed at the bottom end of the scraper 29.

[0059] The cleaning ring 27 has a moving groove 31, and a horizontal plate 32 is slidably arranged in the moving groove 31. A connecting rod 33 is fixed on the surface of the horizontal plate 32 and is fixed to the scraper 29. A pull rod 34 for pulling the horizontal plate 32 is fixed on the surface of the transmission rod 13. A second limiting ball 35 is fixed at the end of the pull rod 34. A limiting groove 36 for the second limiting ball 35 to slide is provided on the lower surface of the horizontal plate 32.

[0060] The core rod 6 has a second insertion hole 48 on its surface. The second track groove 24 also includes a pull-back part 241, a second vertical part 2412, a fifth horizontal part 2413 and a third inclined part 2414 that are connected to the third horizontal part 242. A second rotating plate 2415 is elastically provided at the connection between the third inclined part 2414 and the third horizontal part 242.

[0061] In this technical solution, the first limiting ball 18 moves downward along the first inclined portion 192, causing the first cleaning plate 8 and the second cleaning plate 9 to retract, as... Figure 8 and Figure 10 As shown, the first sliding rod 14 drives the transmission rod 13 to move downward, the transmission rod 13 drives the pull rod 34 to move upward, the pull rod 34 pulls the horizontal plate 32 to move downward, the horizontal plate 32 drives the scraper 29 to move downward through the connecting rod 33, and the scraper 29 extends out of the round hole 28; when the first cleaning plate 8 and the second cleaning plate 9 move out of the extrusion hole 51 and reset, the core rod 6 resets to its original position. Figure 7 The state prevents the core rod 6 from moving to the left. Then the drive rod 10 continues to move to the left, and the drive rod 10 pulls the ring 12 to continue sliding to the left along the surface of the sleeve 11. The ring 12 pulls the retracted first cleaning plate 8 and second cleaning plate 9 to slide to the left through the transmission rod 13. At this time, the inner wall of the round hole 28 can scrape off the residual material on the surface of the first cleaning plate 8, and the extended scraper 29 can scrape off the residual material on the surface of the second cleaning plate 9, thereby completing the cleaning of the first cleaning plate 8 and the second cleaning plate 9.

[0062] During the scraping of residual material on the surfaces of the first cleaning plate 8 and the second cleaning plate 9, the sliding protrusion 23 slides to the right along the pull-back portion 241, allowing the drive rod 10 to continue moving to the left. This pulls the first cleaning plate 8 and the second cleaning plate 9 to the left. Simultaneously, a positioning block 46 is fixed to the surface of the core rod 6, and a second spring 41 is fixed between the limiting block 17 and the positioning block 46. Since the core rod 6 will not continue to move to the left, when the drive rod 10 moves the protrusion 16 to the left, the protrusion 16 will continue to abut against the limiting block 17. At this time, the protrusion 16 provides greater pressure to the limiting block 17, causing... The second spring 41 is compressed, causing the protrusion 16 to move to the left along with the limiting block 17. This causes the drive rod 10 to continue moving to the left relative to the core rod 6. The drive rod 10 drives the first cleaning plate 8 and the second cleaning plate 9 to move to the left through the ring 12 and the transmission rod 13, thus completing the scraping work of the first cleaning plate 8 and the second cleaning plate 9. At this time, the sliding protrusion 23 slides to the second vertical part 2412, the first spring 26 is relieved, and the insertion rod 21 is inserted into the second insertion hole 48, fixing the core rod 6 again. Then the drive rod 10 moves to the right, pushing the first cleaning plate 8 and the second cleaning plate 9 to move to the right and reset. Figure 7 During the process, the sliding protrusion 23 first slides to the left along the fifth horizontal section 2413, and the drive rod 10 moves to the right relative to the core rod 6, causing the ring 12 to slide to the right on the sleeve 11, causing the first cleaning plate 8 and the second cleaning plate 9 to expand outward. Then, the sliding protrusion 23 slides upward along the third inclined section 2414 until it slides to the third horizontal section 242, causing the sliding protrusion 23 to pull the insertion rod 21 upward, moving the insertion rod 21 out of the second insertion hole 48, and resetting the structure to its original position. Figure 7 This status information facilitates the next cleaning cycle.

[0063] like Figure 12 As shown, after the first cleaning plate 8 and the second cleaning plate 9 retract, section c on the surface of the second cleaning plate 9 is exposed, making it convenient for cleaning. However, section d on the surface of the second cleaning plate 9 is blocked by the first cleaning plate 8, making it inconvenient to clean. Therefore, by providing a protruding edge 30 on the edge of the scraper 29, the protruding edge 30 can extend into the position of section d when the scraper 29 is scraping the second cleaning plate 9, thereby increasing the thoroughness of scraping and reducing cleaning dead corners. In addition, in order to avoid the scraper 29 affecting the movement of the transmission rod 13, the scraper 29 is retracted into the cleaning ring 27 before scraping is performed, and then extended before scraping is required. This ensures that the scraper 29 does not affect the movement of the transmission rod 13, resulting in better performance.

[0064] In this technical solution, the structure of the second rotating plate 2415 is the same as that of the first rotating plate 246 in terms of structure and principle. The second rotating plate 2415 ensures that the sliding protrusion 23 can only slide upward along the third inclined part 2414 into the third horizontal part 242, and will not slide downward from the third horizontal part 242 into the third inclined part 2414. In addition, by sliding the second limiting ball 35 along the limiting groove 36, the pull rod 34 can move horizontally when pulling the horizontal plate 32 to move up and down, thereby avoiding jamming.

[0065] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A hot melt extrusion granulation device, comprising a regulating box (2) connected to a granulator (1), characterized in that: An extrusion port (3) is provided on one side of the regulating box (2). A first orifice plate (4) and a second orifice plate (5) that can be adjusted in position are slidably provided inside the regulating box (2). A core rod (6) is slidably provided inside the regulating box (2). A sealing ring (7) is fixed at the end of the core rod (6). A first cleaning plate (8) and a second cleaning plate (9) are slidably provided on the outside of the sealing ring (7). The regulating box (2) is equipped with a drive rod (10) that can move left and right. A sleeve (11) is fixed on the circumference of the core rod (6). A ring (12) is slidably provided on the outer surface of the sleeve (11). The drive rod (10) is fixed to the ring (12). A transmission rod (13) is fixed on the surface of the first cleaning plate (8) and the second cleaning plate (9). The end of the transmission rod (13) is slidably connected to the ring (12). A first slide rod (14) is slidably provided inside the ring (12). One end of the first slide rod (14) is fixed to the transmission rod (13). A first groove (15) is opened inside the sleeve (11). The first cleaning plate (8) and the second cleaning plate (9) slide inward along the first groove (15) through the first slide rod (14) to retract.

2. The hot melt extrusion granulation equipment according to claim 1, characterized in that: The lower surface of the drive rod (10) is fixed with a protrusion (16) for abutting against the sleeve (11), and the surface of the core rod (6) is elastically provided with a limiting block (17) for abutting against the protrusion (16).

3. The hot melt extrusion granulation equipment according to claim 2, characterized in that: The first sliding rod (14) has a first limiting ball (18) fixed at its end. The first sliding groove (15) has a first track groove (19) for the first limiting ball (18) to slide. The first track groove (19) includes a first horizontal part (191), a first inclined part (192) and a second horizontal part (193) connected in series.

4. The hot melt extrusion granulation equipment according to claim 3, characterized in that: The core rod (6) has a first insertion hole (20) on its surface. The adjustment box (2) is elastically provided with a rod (21) for insertion into the first insertion hole (20). The drive rod (10) has a second sliding groove (22) on its surface for the rod (21) to slide. The rod (21) has a sliding protrusion (23) fixed on its surface. The inner wall of the second sliding groove (22) has a second track groove (24) for the sliding protrusion (23) to slide.

5. The hot melt extrusion granulation equipment according to claim 4, characterized in that: The second track groove (24) includes a third horizontal part (242), a first vertical part (243), a fourth horizontal part (244) and a second inclined part (245) connected in series. A first rotating plate (246) is elastically provided at the connection between the second inclined part (245) and the third horizontal part (242).

6. The hot melt extrusion granulation equipment according to claim 5, characterized in that: A first protruding plate (25) is fixed to the outer surface of the insertion rod (21), and a first spring (26) is fixed between the first protruding plate (25) and the inner wall of the adjustment box (2).

7. The hot melt extrusion granulation equipment according to claim 6, characterized in that: The adjustment box (2) has a cleaning ring (27) fixed inside. The cleaning ring (27) has a round hole (28) for cleaning the surface of the first cleaning plate (8). A scraper (29) for cleaning the surface of the second cleaning plate (9) is slidably arranged on the inner wall of the round hole (28). The bottom end of the scraper (29) has a protruding edge (30).

8. The hot melt extrusion granulation equipment according to claim 7, characterized in that: The cleaning ring (27) has a moving groove (31), and a horizontal plate (32) is slidably arranged in the moving groove (31). A connecting rod (33) is fixed on the surface of the horizontal plate (32), and the connecting rod (33) is fixed to the scraper (29). A pull rod (34) for pulling the horizontal plate (32) is fixed on the surface of the transmission rod (13). A second limiting ball (35) is fixed at the end of the pull rod (34). A limiting groove (36) for the second limiting ball (35) to slide is opened on the lower surface of the horizontal plate (32).

9. The hot melt extrusion granulation equipment according to claim 8, characterized in that: The core rod (6) has a second insertion hole (48) on its surface. The second track groove (24) also includes a pull-back part (241), a second vertical part (2412), a fifth horizontal part (2413), and a third inclined part (2414) that are connected to the third horizontal part (242). A second rotating plate (2415) is elastically provided at the connection between the third inclined part (2414) and the third horizontal part (242).

10. The hot melt extrusion granulation equipment according to claim 9, characterized in that: The adjustment box (2) has a shifting groove (37) inside. A sealing ring (38) is fixed on the outside of the first hole plate (4) and the second hole plate (5). A second convex plate (39) is fixed on the outer surface of the sealing ring (38). A servo electric cylinder (40) is fixed on the outer surface of the adjustment box (2). The output end of the servo electric cylinder (40) is fixed to the second convex plate (39).

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