PVC (polyvinyl chloride) plastic granulator

Abstract

The utility model discloses a PVC (polyvinyl chloride) plastic granulator, which relates to the technical field of plastic granulation and comprises a base, an L-shaped mounting plate is arranged at the top of the base, a material conveying pipe is fixedly mounted on one side of the L-shaped mounting plate, a conical feeding hopper is fixedly mounted on the outer side of the material conveying pipe, a heating pipe is fixedly mounted at the top of the base through a support, and the heating pipe is connected with the L-shaped mounting plate. An extrusion head is fixedly installed at one end of the heating pipe, a conveying frame is arranged on one side of the base, a guide groove is fixedly installed at one end of the conveying frame, a second motor is fixedly installed at the top of a supporting plate, a circular sleeve is fixedly installed at the output end of the second motor, and a movable rod is installed in the circular sleeve. Four quick release assemblies are evenly distributed on the outer side of the movable rod and connected with cutting knives correspondingly. And the quick release assembly is mounted on the outer side of the movable rod, quick mounting and dismounting of the cutting knife are achieved through linkage of an L-shaped sliding groove, a plug pin and an L-shaped sliding block, and the maintenance process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic granulation, in particular to a PVC plastic granulator. Background Art

[0002] In the field of plastic granulation technology, PVC plastic granulator is the key equipment for processing PVC powder into granules. Its performance directly affects the granulation efficiency and product quality. With the development of the plastic processing industry, higher requirements are placed on the degree of automation, production continuity and maintenance convenience of the granulator.

[0003] During the use of traditional PVC plastic granulators, the cutting blade is a vulnerable component, and its replacement and maintenance often require the use of complex tools. Operators need to use a variety of tools such as screwdrivers and wrenches to disassemble fixing bolts, positioning components, etc. The installation position of the cutting blade needs to be adjusted repeatedly during the process. There is also a risk of damage to equipment components due to improper tool operation, resulting in long equipment downtime and affecting production efficiency. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a PVC plastic granulator, which has the advantages of rapid assembly and disassembly of the cutting blade through a quick-release component, and dynamic adjustment of the stirring radius by a stirring component to break up powder agglomerates, so as to solve the problems of complicated and time-consuming replacement and maintenance of the cutting blade of the traditional granulator, and easy agglomeration and blockage of the powder.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] The top of the base is provided with an L-shaped mounting plate, one side of the L-shaped mounting plate is fixedly installed with a feeding pipe, the outer side of the feeding pipe is fixedly installed with a conical feeding hopper, the top of the base is fixedly installed with a heating pipe through a bracket, one end of the heating pipe is fixedly installed with an extrusion head, a conveying frame is provided on one side of the base, a plurality of fans are fixedly installed on the top of the conveying frame, a material guide trough is fixedly installed on one end of the conveying frame, and a rectangular mounting plate is fixedly installed on the discharge end of the material guide trough, a feeding hole is opened on the rectangular mounting plate, a semicircular collecting trough is fixedly installed on one side of the rectangular mounting plate, a circular hole is opened on the side of the semicircular collecting trough close to the material guide trough, and the circular hole corresponds to the position of the feeding hole, a support plate is fixedly installed on one side of the semicircular collecting trough, a second motor is fixedly installed on the top of the support plate, and a circular sleeve is fixedly installed on the output end of the second motor, a movable rod is installed inside the circular sleeve, and four quick-release assemblies are evenly distributed on the outside of the movable rod, and the four quick-release assemblies are respectively connected to cutting knives;

[0007] The quick-release assembly includes a mounting block, which is fixedly mounted on the outside of the movable rod, and an L-shaped slot is provided on one side of the mounting block. The quick-release assembly also includes an L-shaped slider, which is fixedly mounted on the bottom of the cutting knife, and the L-shaped slider is slidably arranged inside the L-shaped slot. A socket is provided on one side of the L-shaped slider, and the socket is used in conjunction with a pin, which is movably connected to the inside of the mounting block.

[0008] A movable hole is formed on one side of the mounting block, the movable hole is connected to the L-shaped sliding groove, a rectangular mounting groove is formed on one side of the movable hole, and a rectangular groove is formed on the other side of the movable hole;

[0009] The quick-release assembly also includes an L-shaped lever, which is rotatably mounted inside the rectangular slot via a round rod. A latch is rotatably mounted on the other end of the L-shaped lever, which is movably arranged inside the movable hole and passes through the L-shaped slot.

[0010] The quick-release assembly also includes a rectangular block, which is fixedly mounted on a side of the latch near the rectangular mounting slot. The rectangular block is movably arranged inside the rectangular mounting slot. A first spring is fixedly mounted on the top of the rectangular block, and the other end of the first spring is fixedly mounted to the inner top surface of the rectangular mounting slot.

[0011] A stirring assembly is provided inside the conical feeding hopper, a cover is provided on the top of the conical feeding hopper, a first motor is fixedly installed on the top of the cover, the stirring assembly includes a stirring shaft, the stirring shaft is fixedly installed on the output end of the first motor, a stirring blade is fixedly installed on the outside of the stirring shaft, a rectangular sleeve is symmetrically fixedly installed on the outside of the stirring shaft, and a rectangular slider is movably sleeved inside the rectangular sleeve.

[0012] The stirring assembly also includes two movable sleeves, which are fixedly installed at the bottom of the rectangular slider. A stirring rod is movably installed inside the movable sleeve, and a second spring is fixedly installed on the top of the stirring rod. The other end of the second spring is fixedly installed on the inner top surface of the movable sleeve.

[0013] The stirring assembly further comprises an irregular annular guide groove, which is provided at the bottom of the cover plate. A guide rod is fixedly mounted on the top of the rectangular sliding block, and the guide rod is used in conjunction with the irregular annular guide groove.

[0014] A movable rod is slidably mounted inside the circular sleeve, a third spring is fixedly mounted on one end of the movable rod, and the other end of the third spring is fixedly mounted on one side of the interior of the circular sleeve.

[0015] A semicircular protective cover is movably connected to the top of the semicircular collecting trough.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model realizes the rapid assembly and disassembly and maintenance of the cutting knife through the quick-release assembly. By utilizing the linkage cooperation of the L-shaped lever, the latch and the L-shaped slider, combined with the elastic reset of the first spring, the operator can conveniently complete the disassembly and installation of the cutting knife, simplifying the knife changing process and reducing the equipment downtime. The adaptation structure of the L-shaped slide and the L-shaped slider ensures the accurate positioning of the cutting knife after installation, improves the consistency of the cutting size, and optimizes the continuity of granulation production.

[0018] The utility model can dynamically adapt to the cross-sectional space of the conical feeding hopper by virtue of the stirring component. When the stirring shaft rotates, the guide rod slides along the irregular annular guide groove, driving the rectangular slider to extend and retract in the rectangular sleeve, so that the stirring rod synchronously changes the radial extension length, adapting to the wide upper and narrow lower structure of the conical hopper, and the stirring rod can be movable and retracted in the movable sleeve. During stirring, it can adapt to the cross-sectional shapes of the conical hopper at different heights, avoiding obstruction of the rotation of the stirring component, effectively breaking up powder lumps, ensuring smooth feeding, achieving uniform stirring in the entire area, reducing the risk of material accumulation and bridging, and improving feeding stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a partial structural diagram of the utility model Figure 1 ;

[0021] Figure 3 This is a structural diagram of the conical feeding hopper of the utility model;

[0022] Figure 4 This is a cross-sectional view of the conical feeding hopper of the utility model;

[0023] Figure 5 This is a partial structural diagram of the utility model Figure 2 ;

[0024] Figure 6 This is a partial structural diagram of the utility model Figure 3 (decomposition state);

[0025] Figure 7 This is a partial structural diagram of the utility model Figure 4 (decomposition state);

[0026] Figure 8 This is a partial structural diagram of the utility model Figure 5 (decomposition state);

[0027] Figure 9 This is a partial structural diagram of the utility model Figure 6 ;

[0028] Figure 10 This is a partial structural diagram of the utility model Figure 7 (decomposed state).

[0029] Figure numerals: 1, base; 2, L-shaped mounting plate; 3, feed pipe; 4, conical feeding hopper; 5, cover plate; 6, first motor; 7, heating tube; 701, conveying rack; 702, guide trough; 703, rectangular mounting plate; 8, semicircular collecting trough; 801, round hole; 9, second motor; 10, stirring shaft; 11, rectangular sleeve; 12, rectangular slider; 13, movable sleeve; 14, second spring; 15, stirring stick; 16, irregular annular guide groove; 17, guide rod; 18, circular sleeve; 19, third spring; 20, movable rod; 21, mounting block; 22, cutting knife; 23, L-shaped slider; 24, socket; 25, L-shaped slide; 26, movable hole; 27, rectangular mounting groove; 28, rectangular groove; 29, L-shaped lever; 30, latch; 31, rectangular block; 32, first spring. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation. The structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement solutions or common means, they will not be described in detail herein, but they still fall within the scope of protection of this application.

[0031] Figures 1-10 This is the best embodiment of the present invention, Figure 1 -Attached Figure 10 The utility model is further described.

[0032] A PVC plastic granulator comprises a base 1, an L-shaped mounting plate 2 is provided on the top of the base 1, a feed pipe 3 is fixedly installed on one side of the L-shaped mounting plate 2, a conical feeding hopper 4 is fixedly installed on the outside of the feed pipe 3, a cover plate 5 is provided on the top of the conical feeding hopper 4, a first motor 6 is fixedly installed on the top of the cover plate 5, a heating tube 7 is fixedly installed on the top of the base 1 through a bracket, an extrusion head is fixedly installed on one end of the heating tube 7, a conveying rack 701 is provided on one side of the base 1, a plurality of fans are fixedly installed on the top of the conveying rack 701, a material guide trough 702 is fixedly installed on one end of the conveying rack 701, a rectangular mounting plate 703 is fixedly installed on the discharge end of the material guide trough 702, a feed hole is provided on the rectangular mounting plate 703, and a semicircular shaped collecting trough 8, a circular hole 801 is opened on one side of the semicircular collecting trough 8 close to the material guide trough 702, and the circular hole 801 corresponds to the position of the feed hole. A semicircular protective cover is movably connected to the top of the semicircular collecting trough 8, and a support plate is fixedly installed on one side of the semicircular collecting trough 8. A second motor 9 is fixedly installed on the top of the support plate, and a circular sleeve 18 is fixedly installed on the output end of the second motor 9. A movable rod 20 is movably installed inside the circular sleeve 18, and four cutting knives 22 are evenly distributed in a ring on the outer side of the movable rod 20. Four quick-release assemblies for quickly installing and removing the cutting knives 22 are evenly distributed in a ring on the outer side of the movable rod 20; the interior of the conical feeding hopper 4 is provided with a stirring assembly for preventing blockage due to agglomeration of moisture contained in the powder, which affects the smoothness of feeding.

[0033] In this embodiment, a base 1 is provided to support the entire PVC plastic granulator, providing a stable installation foundation for each component, an L-shaped mounting plate 2 is fixed to the top of the base 1, supporting the feed pipe 3, ensuring that it corresponds precisely to the installation position of the conical feeding hopper 4, and the feed pipe 3 connects the conical feeding hopper 4 and the heating pipe 7 to transmit the material to subsequent processing, and the conical feeding hopper 4 stores and feeds the material. Its conical structure is conducive to the falling of the material, and cooperates with the internal stirring component to prevent the powder from agglomerating and clogging. The cover plate 5 covers the top of the conical feeding hopper 4 to prevent the material from splashing, and provides installation support for the first motor 6, the irregular annular guide groove 16, etc. A feeding pipe is fixedly installed on the cover plate 5, which is convenient for feeding the material from the feeding pipe into the interior of the conical feeding hopper 4. The motor 6 is fixed to the top of the cover plate 5, driving the stirring shaft 10 to rotate and providing power for the stirring assembly. The heating tube 7 is installed on the top of the base 1 to heat the molten material to make it plastic. The extrusion head is connected to the heating tube 7 to extrude the molten material into strips for subsequent cutting. The conveying rack 701 is set on one side of the base 1. Several fans on the top can cool the material that needs to be conveyed after being extruded into strips, and are also used to convey the material. The guide trough 702 is fixed to one end of the conveying rack 701, and is used to guide the material on the conveying rack 701 to the rectangular mounting plate 703. The rectangular mounting plate 703 is fixed to the discharge end of the guide trough 702, and the feed hole opened on one side thereof corresponds to the position of the circular hole 801 of the semicircular collecting trough 8 , support the semicircular collecting trough 8, ensure that the semicircular collecting trough 8 corresponds to the position of the guide trough 702, the semicircular collecting trough 8 is fixed to one side of the rectangular mounting plate 703, and is used to collect the material transported from the guide trough 702 through the feed hole and the circular hole 801, and provide space for the cutting knife 22 to cut the material. The semicircular protective cover is movably connected to the top of the semicircular collecting trough 8, covering the trough body to protect the internal components and prevent material splashing or foreign matter from entering. The support plate is fixed to one side of the semicircular collecting trough 8, supporting the second motor 9, and the second motor 9 is fixed to the top of the support plate, driving the circular sleeve 18 to rotate, driving the cutting knife 22 to operate, and the circular sleeve 18 is installed at the output end of the second motor 9. The internal movably connected movable rod 20 is rotated with the belt The movable cutting knife 22 cuts the material. The cutting knife 22 is evenly distributed in a ring and installed on the outside of the movable rod 20 to cut the extruded strip material into particles. Quick replacement is achieved through the quick-release component. The quick-release component is installed on the outside of the movable rod 20. Through the linkage of the L-shaped slide 25, the pin 30, the L-shaped slider 23 and other components, the cutting knife 22 can be quickly installed and disassembled, simplifying the maintenance process and improving production efficiency. The stirring assembly is installed inside the conical feeding hopper 4, and the stirring rod 15 is driven to rotate by the stirring shaft 10, and the stirring radius is dynamically adjusted by the irregular annular guide groove 16. At the same time, the elastic buffer of the second spring 14 is used to break the powder agglomeration and prevent blockage. It adapts to the variable cross-section space of the conical hopper to ensure smooth feeding.

[0034] Specifically, the quick-release assembly includes a mounting block 21, which is fixedly mounted on the outside of the movable rod 20. An L-shaped slide groove 25 is provided on one side of the mounting block 21, and a movable hole 26 is provided on one side of the mounting block 21. The movable hole 26 is connected to the L-shaped slide groove 25. A rectangular mounting groove 27 is provided on one side of the movable hole 26, and a rectangular groove 28 is provided on the other side of the movable hole 26.

[0035] In this embodiment, by setting a mounting block 21 and fixing it on the outside of the movable rod 20, a stable mounting base is provided for quick-release assembly components such as the L-shaped slide groove 25 and the movable hole 26, ensuring a reliable connection between the quick-release assembly and the movable rod 20. The L-shaped slide groove 25 and the L-shaped slider 23 of the cutting knife 22 are movably matched to provide a guide track for the installation and removal process of the cutting knife 22, and at the same time, the cutting knife 22 is radially limited to ensure the position accuracy of the cutting knife 22 after installation. The movable hole 26 provides a space channel for the movement of the latch 30, so that the latch 30 can pass through the L-shaped slide groove 25 and be connected with the L The L-shaped slider 23 cooperates with the socket 24 to achieve the fixing or unlocking operation of the cutting knife 22. The rectangular mounting groove 27 is opened on one side of the movable hole 26 for installing the rectangular block 31 and the first spring 32. Through the movement of the rectangular block 31 in the groove and the elastic force of the first spring 32, the pin 30 is pushed to reset, ensuring the stable engagement of the pin 30 with the socket 24. The rectangular groove 28 is used to install the L-shaped lever 29, so that the L-shaped lever 29 can rotate around the round rod, thereby driving the pin 30 to move in the movable hole 26, realizing the disengagement or engagement of the pin 30 with the socket 24.

[0036] Specifically, the quick-release assembly also includes an L-shaped lever 29, which is rotatably mounted inside the rectangular groove 28 through a round rod. A latch 30 is rotatably mounted on the other end of the L-shaped lever 29. The latch 30 is movably arranged inside the movable hole 26 and passes through the L-shaped slide groove 25.

[0037] In this embodiment, an L-shaped lever 29 is arranged to be rotatably installed inside the rectangular groove 28 through a round rod. The operator can manually rotate it and use the lever principle to drive the pin 30 to move in the movable hole 26, so as to achieve the disengagement or engagement of the pin 30 with the socket 24 of the L-shaped slider 23, thereby completing the rapid disassembly and installation of the cutting knife 22. The pin 30 is movably arranged inside the movable hole 26 and passes through the L-shaped slide 25. When the L-shaped lever 29 rotates, the pin 30 moves with it, and fixes the cutting knife 22 when inserted into the socket 24 of the L-shaped slider 23, and allows the cutting knife 22 to be disassembled when disengaged from the socket 24, playing a key locking and unlocking role.

[0038] Specifically, the quick-release assembly also includes a rectangular block 31, which is fixedly mounted on one side of the latch 30 close to the rectangular mounting groove 27. The rectangular block 31 is movably arranged inside the rectangular mounting groove 27. A first spring 32 is fixedly mounted on the top of the rectangular block 31, and the other end of the first spring 32 is fixedly mounted to the inner top surface of the rectangular mounting groove 27.

[0039] When the L-shaped lever 29 is released, the first spring 32 can automatically push the rectangular block 31 to reset, thereby realizing rapid locking of the latch 30 and ensuring the stability of the cutting knife 22 after installation.

[0040] Specifically, the quick-release assembly also includes an L-shaped slider 23, which is fixedly installed at the bottom of the cutting knife 22. The L-shaped slider 23 is movably arranged inside the L-shaped slide groove 25. A socket 24 is provided on one side of the L-shaped slider 23, and the socket 24 is used in conjunction with the pin 30.

[0041] In this embodiment, an L-shaped slider 23 is provided, which is fixedly installed at the bottom of the cutting knife 22 and movably cooperates with the L-shaped slide groove 25 to provide a guide track for the installation of the cutting knife 22, ensuring that the cutting knife 22 is accurately positioned along the L-shaped slide groove 25. At the same time, the radial limitation of the cutting knife 22 is achieved through the L-shaped structure to prevent shaking during cutting. The socket 24 is opened on one side of the L-shaped slider 23 and precisely cooperates with the pin 30. When the pin 30 is inserted, the cutting knife 22 is locked to prevent it from falling off during work. When the pin 30 is disengaged, the cutting knife 22 is allowed to be disassembled along the L-shaped slide groove 25. It is a key locking structure for realizing the quick release function.

[0042] Specifically, the stirring assembly includes a stirring shaft 10, which is fixedly installed at the output end of the first motor 6. A stirring blade is fixedly installed on the outside of the stirring shaft 10. A rectangular sleeve 11 is symmetrically fixedly installed on the outside of the stirring shaft 10. A rectangular slider 12 is movably sleeved inside the rectangular sleeve 11.

[0043] In this embodiment, a stirring shaft 10 is provided and fixed to the output end of the first motor 6, which directly receives the motor power and converts it into rotational motion to drive the entire stirring assembly to operate. When the stirring blades rotate with the stirring shaft 10, they directly contact and turn over the PVC powder in the conical hopper 4, break up larger lumps, and promote uniform distribution of materials. The lumps formed by the moisture in the powder are broken by mechanical stirring to avoid the accumulation of lumps at the bottom of the conical hopper 4 and the blockage of the feed pipe 3. The rectangular sleeve 11 is symmetrically fixed to the outside of the stirring shaft 10, and a rectangular slider 12 is movably sleeved inside to provide linear guidance for the radial expansion and contraction of the rectangular slider 12 to ensure the accuracy of the motion trajectory. The rectangular slider 12 slides in the rectangular sleeve 11, and the top guide rod 17 cooperates with the irregular annular guide groove 16 to convert the curved trajectory of the guide groove into its own radial expansion and contraction motion.

[0044] Specifically, the stirring assembly also includes two movable sleeves 13, which are fixedly installed at the bottom of the rectangular slider 12. A stirring rod 15 is movably installed inside the movable sleeve 13, and a second spring 14 is fixedly installed on the top of the stirring rod 15. The other end of the second spring 14 is fixedly installed on the inner top surface of the movable sleeve 13.

[0045] In this embodiment, a movable sleeve 13 is provided and fixed to the bottom of the rectangular slider 12 to provide an axial sliding space for the stirring rod 15, ensuring that the stirring rod 15 can be extended and retracted in the vertical direction and accurately adapted to the variable cross-sectional height of the conical feeding hopper 4. While the stirring rod 15 moves radially with the rectangular slider 12, the material is stirred at different height positions of the conical feeding hopper 4 through the telescopic movement in the movable sleeve 13 to break up lumps and promote flow. The second spring 14 is installed in the movable sleeve 13. When the stirring rod 15 encounters resistance, the spring is compressed to absorb impact energy and prevent the stirring assembly from getting stuck. At the same time, the stirring rod 15 can be extended and retracted in the movable sleeve 13 through elastic force to adapt to different cross-sections of the conical hopper and prevent it from getting stuck.

[0046] Specifically, the stirring assembly also includes an irregular annular guide groove 16, which is opened at the bottom of the cover plate 5. A guide rod 17 is fixedly installed on the top of the rectangular slider 12. The guide rod 17 is used in conjunction with the irregular annular guide groove 16. When the guide rod 17 slides along the irregular annular guide groove 16, it drives the stirring assembly to change the radial extension length, thereby realizing dynamic adjustment of the stirring radius.

[0047] In this embodiment, an irregular annular guide groove 16 is provided to guide the guide rod 17 to make periodic radial movements, thereby driving the stirring rod 15 to achieve "expansion-contraction" radius changes, and converting the circular motion of the stirring shaft 10 into radial linear motion of the rectangular slider 12. The stirring radius can be dynamically adjusted without an additional power source. The top end of the guide rod 17 is embedded in the irregular annular guide groove 16, and the bottom end is fixed to the rectangular slider 12. It slides along the guide groove when the stirring shaft 10 rotates, forcing the rectangular slider 12 to perform reciprocating motion in the rectangular sleeve 11.

[0048] Specifically, the third spring 19 is fixedly mounted on one end of the movable rod 20 , and the other end of the third spring 19 is fixedly mounted on one side of the inner portion of the circular sleeve 18 .

[0049] In this embodiment, a third spring 19 is installed between the circular sleeve 18 and the movable rod 20. The elastic force of the third spring 19 pushes the movable rod 20 to extend axially, automatically compensating for the reduction in cutting radius and maintaining a stable particle size. The adaptive compensation function enables the cutting knife 22 to always maintain an optimal distance from the material extrusion surface.

[0050] In summary, when the present invention is in use, the operator manually feeds the PVC powder into the conical feeding hopper 4 through the feeding pipe on the top of the cover plate 5, and the external power supply starts the first motor 6, and its output end drives the stirring shaft 10 to rotate, and the stirring blades on the outer side of the stirring shaft 10 rotate accordingly to initially stir the powder. At the same time, the rectangular sleeve 11 on the stirring shaft 10 drives the rectangular slider 12 to rotate, and the guide rod 17 on the top of the rectangular slider 12 slides along the irregular annular guide groove 16 at the bottom of the cover plate 5. Due to the irregularity of the guide groove, the rectangular slider 12 is driven to move in the rectangular sleeve 11, thereby causing the movable sleeve 13 at the bottom of the rectangular slider 12 and the stirring rod 15 to change the radial extension length, and the stirring rod 15 is in the movable sleeve 13, and rotates to different inclined surface heights inside the conical feeding hopper 4 with the rectangular slider 12, and is automatically extended and retracted by the second spring 14 to adapt to the space change, effectively breaking the agglomeration of the powder due to moisture, preventing the feeding pipe 3 from being blocked, and causing the material to fall into the heating pipe 7 fixed by the top bracket of the base 1 through the feeding pipe 3;

[0051] After the heating tube 7 heats and melts the material, it is pushed to the extrusion head, extruded into strips and falls on the conveyor belt of the conveyor rack 701. Several fans on the top of the conveyor rack 701 cool the strip materials. The cooled strip materials are conveyed to the guide trough 702 by the conveyor rack 701, and are fed into the semicircular collecting trough 8 by the guide trough 702 through the feed hole of the rectangular mounting plate 703 and the circular hole 801 of the semicircular collecting trough 8. At this time, the external power supply starts the second motor 9, and its output end drives the circular sleeve 18 to rotate, and the movable rod 20 in the circular sleeve 18 rotates accordingly. The cutting knife 22 on the outside of the movable rod 20 cuts and granulates the strip materials. The third spring 19 at one end of the movable rod 20 cooperates with one side of the inner side of the circular sleeve 18 to provide axial buffering for the cutting process;

[0052] When the cutting blade 22 needs to be replaced, the L-shaped lever 29 of the quick-release assembly is manually toggled, and the L-shaped lever 29 rotates around the inner rod of the rectangular groove 28, driving the latch 30 to move in the movable hole 26. The first spring 32 is squeezed and compressed by the rectangular block 31, storing elastic potential energy, so that the latch 30 disengages from the socket 24 of the L-shaped slider 23 at the bottom of the cutting blade 22, and the old cutting blade 22 is taken out along the L-shaped slide groove 25 of the mounting block 21. Then the L-shaped slider 23 of the new cutting blade 22 is inserted into the L-shaped slide groove 25 and slides into place, and the L-shaped lever 29 is released. The first spring 32 pushes the rectangular block 31 to drive the latch 30 to reset and insert into the socket 24, completing the replacement. The semicircular protective cover on the top of the semicircular collecting trough 8 can be opened and closed manually to ensure safe operation. Finally, the granules are discharged from the leakage hole at the bottom of the semicircular collecting trough 8.

Claims

1. A PVC plastic granulator, characterized in that, The invention comprises a base (1), wherein an L-shaped mounting plate (2) is provided on the top of the base (1), a feeding pipe (3) is fixedly installed on one side of the L-shaped mounting plate (2), a conical feeding hopper (4) is fixedly installed on the outside of the feeding pipe (3), a heating pipe (7) is fixedly installed on the top of the base (1) through a bracket, an extrusion head is fixedly installed on one end of the heating pipe (7), a conveying frame (701) is provided on one side of the base (1), a plurality of fans are fixedly installed on the top of the conveying frame (701), a material guide trough (702) is fixedly installed on one end of the conveying frame (701), a rectangular mounting plate (703) is fixedly installed on the discharge end of the material guide trough (702), and the rectangular mounting plate ( 703) is provided with a feeding hole, a semicircular collecting trough (8) is fixedly installed on one side of the rectangular mounting plate (703), a circular hole (801) is provided on the side of the semicircular collecting trough (8) close to the guide trough (702), and the circular hole (801) corresponds to the position of the feeding hole, a support plate is fixedly installed on one side of the semicircular collecting trough (8), a second motor (9) is fixedly installed on the top of the support plate, a circular sleeve (18) is fixedly installed on the output end of the second motor (9), a movable rod (20) is installed inside the circular sleeve (18), and four quick-release components are evenly distributed on the outside of the movable rod (20), and the four quick-release components are respectively connected to cutting knives (22); The quick-release assembly includes a mounting block (21), the mounting block (21) is fixedly mounted on the outside of the movable rod (20), an L-shaped sliding groove (25) is provided on one side of the mounting block (21), and the quick-release assembly also includes an L-shaped slider (23), the L-shaped slider (23) is fixedly mounted on the bottom of the cutting knife (22), the L-shaped slider (23) is slidably arranged inside the L-shaped sliding groove (25), and a socket (24) is provided on one side of the L-shaped slider (23), the socket (24) is used in conjunction with a latch (30), and the latch (30) is movably connected inside the mounting block (21).

2. A PVC plastic granulator according to claim 1, characterized in that, A movable hole (26) is provided on one side of the mounting block (21), the movable hole (26) is connected to the L-shaped slide groove (25), a rectangular mounting groove (27) is provided on one side of the movable hole (26), and a rectangular groove (28) is provided on the other side of the movable hole (26); The quick-release assembly further comprises an L-shaped lever (29), which is rotatably mounted inside the rectangular slot (28) via a round rod. A latch (30) is rotatably mounted on the other end of the L-shaped lever (29), and the latch (30) is movably arranged inside the movable hole (26). The latch (30) passes through the L-shaped slide slot (25).

3. A PVC plastic granulator according to claim 2, characterized in that, The quick-release assembly further comprises a rectangular block (31), the rectangular block (31) being fixedly mounted on a side of the latch (30) close to the rectangular mounting groove (27), the rectangular block (31) being movably arranged inside the rectangular mounting groove (27), a first spring (32) being fixedly mounted on the top of the rectangular block (31), and the other end of the first spring (32) being fixedly mounted on the inner top surface of the rectangular mounting groove (27).

4. A PVC plastic granulator according to claim 1, characterized in that, A stirring assembly is provided inside the conical feeding hopper (4), a cover plate (5) is provided on the top of the conical feeding hopper (4), a first motor (6) is fixedly mounted on the top of the cover plate (5), the stirring assembly comprises a stirring shaft (10), the stirring shaft (10) is fixedly mounted on the output end of the first motor (6), a stirring blade is fixedly mounted on the outside of the stirring shaft (10), a rectangular sleeve (11) is symmetrically fixedly mounted on the outside of the stirring shaft (10), and a rectangular slider (12) is movably sleeved inside the rectangular sleeve (11).

5. A PVC plastic granulator according to claim 4, characterized in that, The stirring assembly further comprises two movable sleeves (13), the two movable sleeves (13) being fixedly mounted on the bottom of the rectangular slider (12), a stirring rod (15) being movably mounted inside the movable sleeves (13), a second spring (14) being fixedly mounted on the top of the stirring rod (15), and the other end of the second spring (14) being fixedly mounted on the inner top surface of the movable sleeve (13).

6. A PVC plastic granulator according to claim 5, characterized in that, The stirring assembly further comprises an irregular annular guide groove (16), the irregular annular guide groove (16) being opened at the bottom of the cover plate (5), and a guide rod (17) being fixedly mounted on the top of the rectangular slider (12), the guide rod (17) being used in conjunction with the irregular annular guide groove (16).

7. A PVC plastic granulator according to claim 1, characterized in that, A movable rod (20) is slidably mounted inside the circular sleeve (18), a third spring (19) is fixedly mounted on one end of the movable rod (20), and the other end of the third spring (19) is fixedly mounted on one side of the interior of the circular sleeve (18).

8. A PVC plastic granulator according to claim 1, characterized in that: The top of the semicircular collecting trough (8) is movably connected to a semicircular protective cover.

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