A feeding mechanism and PVC plastic particle processing device

Abstract

The utility model relates to the technical field of plastic particle processing equipment, especially to a feeding mechanism and PVC plastic particle processing device, the feeding mechanism includes box, rotary drum, drive assembly, support column and transmission assembly, sets up cylindrical cavity, feed hopper, blanking tube, exhaust hole and air inlet in the box, sets up exhaust component in the exhaust hole, sets up heating assembly and ion wind stick in the air inlet, rotary drum sets up in the cylindrical cavity, sets up a plurality of baffle on rotary drum, all sets up stirring assembly between adjacent two baffles, drive assembly sets up on the box and drives rotary drum rotation, support column sets up on the inner wall of cylindrical cavity, sets up bevel gear ring on support column, transmission assembly transmission connection bevel gear ring and stirring assembly to drive each stirring assembly operation under the condition that rotary drum rotates, the utility model integrates heating drying, ion wind static electricity elimination and realizes high -efficient open material function through the unique transmission structure drive reverse stirring paddle in one.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic granule processing equipment, and in particular to a feeding mechanism and a PVC plastic granule processing device. Background Technology

[0002] In the production and processing of PVC granules, feeding is a crucial preliminary step. Traditional feeding mechanisms are relatively simple, typically only providing basic conveying or storage functions. Because PVC raw material granules are prone to moisture absorption and static electricity during storage and transportation, they can easily stick together and clump. Directly feeding them into the granulator can lead to uneven feeding and inlet blockage, affecting the stability of subsequent extrusion granulation and the quality of the final product. Furthermore, the stirring function in existing feeding mechanisms is often independently driven, resulting in a complex overall structure and high manufacturing costs.

[0003] Therefore, the industry needs a feeding mechanism and matching processing equipment that can integrate raw material pretreatment (such as drying and anti-sticking), uniform mixing and stable conveying, and has a compact and efficient structure. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a feeding mechanism and a PVC plastic granule processing device.

[0005] The technical solution of this utility model is as follows: On the one hand, this utility model proposes a feeding mechanism, including a box body, a cylindrical cavity is provided inside the box body, a feeding hopper and a feeding pipe communicating with the cylindrical cavity are provided on the box body, and an exhaust hole and an air inlet are symmetrically arranged on the box body along the radial direction of the cylindrical cavity. An exhaust component is provided in the exhaust hole, and a heating component and an ion fan bar are provided in the air inlet.

[0006] A rotating drum is set inside a cylindrical cavity and is coaxially rotatably connected to its inner wall. Several baffles are spaced apart on the arc surface of the rotating drum. The baffles are slidably connected to the inner wall of the cylindrical cavity, and a stirring component is set on the rotating drum between two adjacent baffles.

[0007] A drive assembly is mounted on the housing and drives the rotating drum to rotate.

[0008] The support column is coaxially mounted on the inner wall of the cylindrical cavity. The support column is inserted into the rotating cylinder and rotates coaxially with it. A helical toothed ring is coaxially mounted on the support column.

[0009] And a transmission assembly, which drives the helical gear ring and the stirring assembly to drive each stirring assembly to operate while the drum is rotating.

[0010] Preferably, protective nets are provided at the exhaust port and the air inlet port, as well as at the opening on the side near the cylindrical cavity.

[0011] Preferably, the heating component includes an electric heating rod, and an air guide shroud is provided to cover the outside of the air inlet. Both the electric heating rod and the ionizing air rod are disposed inside the air guide shroud, with the electric heating rod located between the ionizing air rod and the air inlet. A dustproof net is provided inside the air inlet of the air guide shroud.

[0012] Preferably, the stirring assembly includes a stirring shaft and a stirring paddle. On the arc surface of the rotating drum, a mounting plate is respectively provided between two adjacent partitions. The stirring shaft is rotatably connected to the mounting plate, and the stirring paddle is connected to the stirring shaft.

[0013] Preferably, the transmission assembly includes a splined shaft and a helical gear. An annular groove coaxial with the support column is provided on the arc surface of the support column. The helical gear ring is disposed in the annular groove. A circular ring coaxially rotating with the support column is provided at the opening of the annular groove. The splined shaft includes multiple splined shafts, all of which are rotatably disposed on the circular ring. The axial direction of the splined shaft is perpendicular to the axial direction of the support column. The helical gear is coaxially connected to one end of the splined shaft inserted into the annular groove. The helical gear meshes with the helical gear ring. Each stirring shaft is coaxially connected to the splined shaft on the corresponding side.

[0014] Preferably, each mounting plate is provided with at least two stirring shafts, and the support column is provided with at least two helical tooth rings with opposite tooth surfaces. The helical gears connected to the two stirring shafts mesh with the helical tooth rings on the corresponding sides, so that the two stirring shafts rotate in opposite directions and the raw materials are dispersed by the staggered and oppositely rotating stirring paddles.

[0015] On the other hand, this utility model also proposes a PVC plastic granule processing device, including the above-mentioned feeding mechanism, as well as a frame, a granulator and a rotary cutting mechanism. The box, the granulator and the rotary cutting mechanism are all set on the frame. The feeding end of the granulator is connected to the output end of the feeding pipe. The rotary cutting mechanism is clearance-fitted with the output end of the granulator.

[0016] Preferably, the rotary cutting mechanism includes a fixed base and a cutter. The fixed base is mounted on the frame, and a drive shaft and a servo motor B that drives the drive shaft to rotate are rotatably mounted on the fixed base. The drive shaft is connected to the cutter, and the cutter is clearance-fitted with the end face of the forming die of the granulator.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] By integrating heating components and ionizing air bars into the air intake channel of the chamber, dry hot air and static-eliminating ionizing air are continuously delivered into the cavity. This allows the raw materials to be dried and static electricity eliminated simultaneously during transportation, effectively preventing the adhesion and clumping of particles caused by moisture and static electricity. This provides raw materials with better physical properties for subsequent granulation, ensuring smooth production and product quality. The rotating drum structure with internal baffles, driven by the drive component, achieves forced and quantitative transportation of raw materials with stable feeding. More importantly, through a unique transmission component design, using fixed support columns and helical toothed rings, the revolution of the drum is converted into the rotation of the stirring shaft, eliminating the need for a separate drive source for stirring. The structure is ingenious and energy-saving. In particular, the multiple sets of stirring paddles rotating in opposite directions can fully and alternately disperse and stir the raw materials, making the pretreatment effect more uniform and further breaking down any potential clumps. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0020] Figure 2 A schematic diagram of the connection structure of the various components inside the box;

[0021] Figure 3 This is a schematic diagram of the connection structure between the box body and the supporting column;

[0022] Figure 4 A schematic diagram of the connection structure of the various components on the support column;

[0023] Figure 5 This is a schematic diagram of the connection structure of the various components on the rotating drum;

[0024] Figure 6 This is a schematic diagram of the rotary cutting mechanism.

[0025] Reference numerals: 1. Box body; 101. Cylindrical cavity; 102. Feed hole; 103. Discharge hole; 104. Exhaust hole; 105. Air inlet; 2. Feed hopper; 3. Discharge pipe; 4. Protective net; 5. Fan; 6. Air guide hood; 7. Electric heating rod; 8. Ionizing air rod; 9. Dustproof net; 10. Rotary drum; 11. Partition plate; 12. Servo motor A; 13. Support column; 131. Annular groove; 14. Helical gear ring; 15. Circular ring; 16. Splined shaft; 17. Helical gear; 18. Mounting plate; 19. Stirring shaft; 20. Stirring paddle; 21. Granulator; 22. Collection hood; 23. Fixed base; 24. Slide base; 25. Linear module; 26. Drive shaft; 27. Cutter; 28. Servo motor B. Detailed Implementation

[0026] Example 1, as Figures 1-6As shown, this utility model proposes a feeding mechanism and a PVC plastic granule processing device. The feeding mechanism includes a box body 1, a rotating drum 10, a drive assembly, a support column 13, and a transmission assembly. A cylindrical cavity 101 is provided inside the box body 1. A feed hole 102 and a discharge hole 103 communicating with the cylindrical cavity 101 are provided on the box body 1. A feed hopper 2 is provided outside the feed hole 102, and a discharge pipe 3 is provided outside the discharge hole 103. An exhaust hole 104 and an air inlet 105 are symmetrically arranged on the box body 1 along the radial direction of the cylindrical cavity 101. A protective net 4 is provided at the opening of the exhaust hole 104 and the air inlet 105 near the cylindrical cavity 101. An exhaust assembly is provided inside the exhaust hole 104. The exhaust assembly includes, but is not limited to, a fan 5. The input end of the fan 5 is connected to the inside of the cylindrical cavity 101, and the output end of the fan 5 is connected to the outside. A heating component and an ionizer 8 are installed inside the air inlet 105. The heating component includes an electric heating rod 7. An air guide shroud 6 is installed to cover the outside of the air inlet 105. Both the electric heating rod 7 and the ionizer 8 are installed inside the air guide shroud 6, and the electric heating rod 7 is located between the ionizer 8 and the air inlet 105. A dustproof net 9 is installed inside the air inlet of the air guide shroud 6.

[0027] A rotating drum 10 is disposed within a cylindrical cavity 101 and is rotatably connected to its inner wall. Several partitions 11 are spaced apart on the arc surface of the rotating drum 10. The partitions 11 are slidably connected to the inner wall of the cylindrical cavity 101, and a stirring assembly is disposed between adjacent partitions 11 on the rotating drum 10. The stirring assembly includes a stirring shaft 19 and a stirring paddle 20. A mounting plate 18 is disposed between adjacent partitions 11 on the arc surface of the rotating drum 10. The stirring shaft 19 is rotatably connected to the mounting plate 18, and the stirring paddle 20 is connected to the stirring shaft 19. The driving assembly includes, but is not limited to, a servo motor A12. The body of the servo motor A12 is disposed on the housing 1, and the output end of the servo motor A12 is coaxially connected to the mounting shaft of the rotating drum 10. The servo motor A12 drives the rotating drum 10 to rotate during operation. A support column 13 is coaxially disposed on the inner wall of the cylindrical cavity 101. The support column 13 is inserted into the rotating drum 10 and rotates coaxially with it. A helical toothed ring 14 is coaxially disposed on the support column 13.

[0028] The transmission assembly includes a splined shaft 16 and a helical gear 17. An annular groove 131 coaxial with the support column 13 is provided on the arc surface of the support column 13. A helical gear ring 14 is disposed in the annular groove 131. A circular ring 15 coaxially rotating with the support column 13 is provided at the opening of the annular groove 131. The splined shaft 16 includes multiple splined shafts, all of which are rotatably disposed on the circular ring 15. The axial direction of the splined shaft 16 is perpendicular to the axial direction of the support column 13. The helical gear 17 is coaxially connected to one end of the splined shaft 16 inserted into the annular groove 131. The helical gear 17 meshes with the helical gear ring 14. Each stirring shaft 19 is coaxially connected to the splined shaft 16 on the corresponding side. The transmission assembly drives the helical gear ring 14 and the stirring assembly to drive each stirring assembly to run while the rotating drum 10 is rotating. At least two stirring shafts 19 are provided on each mounting plate 18, and at least two helical toothed rings 14 with opposite tooth surfaces are provided on the support column 13. The helical gears 17 connected to the two stirring shafts 19 mesh with the helical toothed rings 14 on the corresponding sides, so that the two stirring shafts 19 rotate in opposite directions and the raw materials are dispersed by the staggered and oppositely rotating stirring paddles 20.

[0029] The PVC plastic granule processing device includes the aforementioned feeding mechanism, as well as a frame, a granulator 21, and a rotary cutting mechanism. The housing 1, the granulator 21, and the rotary cutting mechanism are all mounted on the frame. The feed end of the granulator is conductively connected to the output end of the discharge pipe 3. The rotary cutting mechanism is clearance-fitted to the output end of the granulator. The rotary cutting mechanism includes a fixed base 23 and a cutter 27. The fixed base 23 is mounted on the frame. A drive shaft 26 and a servo motor B28 driving the drive shaft 26 are rotatably mounted on the fixed base 23. The drive shaft is connected to the cutter 27, which is clearance-fitted to the molding die end face of the granulator 21.

[0030] It should be noted that the granulator 21 adopts, but is not limited to, a conventional screw extrusion granulator, and its supporting heating structure will not be described in detail.

[0031] In this embodiment, during operation, PVC plastic granules enter the cylindrical cavity 101 of the housing 1 from the feed hopper 2 through the feed hole 102. The air inlet 105 and exhaust 104 on the housing 1 are used to regulate the environment inside the cylindrical cavity 101: the air inlet 105 is covered by a guide shroud 6, and an electric heating rod 7 and an ionizing air rod 8 are sequentially arranged inside the guide shroud 6. The electric heating rod 7 heats the incoming air, and the ionizing air rod 8 generates ionized air to eliminate static electricity and prevent the raw materials from sticking together; simultaneously, a dustproof net 9 is installed inside the air inlet of the guide shroud 6 to prevent dust from entering. A fan 5 is installed inside the exhaust 104. The input end of the fan 5 is connected to the inside of the cylindrical cavity 101, and the output end is connected to the outside, used to expel humid air and impurities from the cavity. Protective nets 4 are installed at the openings of both the exhaust 104 and the air inlet 105 near the cylindrical cavity 101 to prevent raw materials from entering the openings.

[0032] The rotating drum 10 is driven to rotate within the cylindrical cavity 101 by a servo motor A12, the output end of which is coaxially connected to the mounting shaft of the rotating drum 10. Several partitions 11 are spaced apart on the arc surface of the rotating drum 10, and these partitions 11 are slidably connected to the inner wall of the cylindrical cavity 101, dividing the cylindrical cavity 101 into multiple small chambers. As the rotating drum 10 rotates, the raw material moves from the feed hole 102 to the descending hole 103 under the influence of the partitions 11. During this movement, the support column 13 remains fixed, and the rotating drum 10 drives the ring 15 and the splined shaft 16 to revolve around the support column 13. Simultaneously, the helical gear 17 meshes with the helical gear ring 14, forcing the splined shaft 16 to rotate, thereby driving the stirring shaft 19 to rotate. Each mounting plate 18 is provided with at least two stirring shafts 19, and the support column 13 is provided with at least two helical toothed rings 14 with opposing tooth surfaces. The helical gears 17 connected to the two stirring shafts 19 mesh with the helical toothed rings 14 on the corresponding sides, so that the two stirring shafts 19 rotate in opposite directions. The stirring paddles 20 thus stir and disperse the raw materials in an alternating and opposite direction of rotation, preventing agglomeration and promoting the effects of heating and ionizing air, ensuring uniform drying and elimination of static electricity. Finally, the raw materials are discharged through the discharge hole 103 and the discharge pipe 3. The dried raw materials discharged from the bottom enter the granulator 21 and begin to be extruded into strips, while the servo motor 28 drives the cutter 27 to rotate and granulate the strip material.

[0033] Example 2, as Figure 1 and Figure 6 As shown, the feeding mechanism and PVC granule processing device proposed in this utility model, compared with Embodiment 1, have a guide rail on the fixed base 23, which is parallel to the axial direction of the transmission shaft 26. A slide block 24 is slidably mounted on the guide rail. The transmission shaft 26 is rotatably connected to the slide block 24 and slidably connected to the fixed base 23. The body of the servo motor B28 is mounted on the slide block 24, and the output end of the servo motor B28 is connected to the transmission shaft 26 through a coupling. A collection cover 22 is mounted on the fixed base 23, and a discharge port is provided at the bottom of the collection cover 22. The collection cover 22 covers the outside of the cutter 27 and is rotatably connected to the transmission shaft 26. A linear module 25 is mounted on the fixed base 23, and the output end of the linear module 25 is connected to the slide block 24. In the working state, the linear module 25 drives the slide block 24 to move so that the collection cover 22 covers the outside of the forming mold of the granulator 21, or moves the collection cover 22 away from the granulator 21, so as to facilitate the replacement of the cutter 27.

[0034] In this embodiment, the cutter 27 itself needs to be ground or replaced according to the usage. At this time, the linear module 25 can drive the slide 24 to move so that the cutter 27 is exposed. After the replacement is completed, it is moved back to its original position. At the same time, the collection cover 22 is used to prevent plastic material from flying around.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A feeding mechanism, characterized in that, include: The box (1) has a cylindrical cavity (101) inside. The box (1) is provided with a feed hopper (2) and a discharge pipe (3) communicating with the cylindrical cavity (101). The box (1) is symmetrically provided with an exhaust hole (104) and an air inlet (105) along the radial direction of the cylindrical cavity (101). An exhaust component is provided in the exhaust hole (104), and a heating component and an ion fan bar (8) are provided in the air inlet (105). Rotary cylinder (10) is set inside cylindrical cavity (101) and is coaxially connected to its inner wall. Several partitions (11) are spaced apart on the arc surface of the rotary cylinder (10). The partitions (11) are slidably connected to the inner wall of cylindrical cavity (101). A stirring assembly is set between two adjacent partitions (11) on the rotary cylinder (10). A drive assembly is mounted on the housing (1) and drives the rotating drum (10) to rotate; Support column (13) is coaxially arranged on the inner wall of cylindrical cavity (101). The support column (13) is inserted into the rotating cylinder (10) and rotates coaxially with it. A helical toothed ring (14) is coaxially arranged on the support column (13). And a transmission assembly, which drives the helical gear ring (14) and the stirring assembly to drive each stirring assembly to run while the drum (10) is rotating.

2. The feeding mechanism according to claim 1, characterized in that, Protective nets (4) are provided at the exhaust port (104) and the air inlet port (105) and at the opening on the side near the cylindrical cavity (101).

3. The feeding mechanism according to claim 1, characterized in that, The heating assembly includes an electric heating rod (7), and an air guide shroud (6) is provided to cover the outside of the air inlet (105). The electric heating rod (7) and the ion air rod (8) are both located inside the air guide shroud (6), and the electric heating rod (7) is located between the ion air rod (8) and the air inlet (105). A dustproof net (9) is provided inside the air inlet of the air guide shroud (6).

4. The feeding mechanism according to claim 1, characterized in that, The stirring assembly includes a stirring shaft (19) and a stirring paddle (20). On the arc surface of the rotating drum (10), a mounting plate (18) is respectively provided between two adjacent partitions (11). The stirring shaft (19) is rotatably connected to the mounting plate (18), and the stirring paddle (20) is connected to the stirring shaft (19).

5. A feeding mechanism according to claim 4, characterized in that, The transmission assembly includes a splined shaft (16) and a helical gear (17). An annular groove (131) coaxial with the support column (13) is provided on the arc surface of the support column (13). A helical gear ring (14) is provided in the annular groove (131). A circular ring (15) coaxially rotating with the support column (13) is provided at the opening of the annular groove (131). The splined shaft (16) includes multiple splined shafts and is rotatably provided on the circular ring (15). The axial direction of the splined shaft (16) is perpendicular to the axial direction of the support column (13). The helical gear (17) is coaxially connected to one end of the splined shaft (16) inserted into the annular groove (131). The helical gear (17) meshes with the helical gear ring (14). Each stirring shaft (19) is coaxially connected to the splined shaft (16) on the corresponding side.

6. A feeding mechanism according to claim 5, characterized in that, At least two stirring shafts (19) are provided on each mounting plate (18), and at least two helical tooth rings (14) with opposite tooth surfaces are provided on the support column (13). The helical gears (17) connected to the two stirring shafts (19) mesh with the helical tooth rings (14) on the corresponding side, so that the two stirring shafts (19) rotate in opposite directions and the raw materials are dispersed by the staggered and oppositely rotating stirring paddles (20).

7. A PVC plastic granule processing apparatus, comprising the feeding mechanism as described in any one of claims 1-6, characterized in that, It also includes a frame, a granulator (21) and a rotary cutting mechanism. The housing (1), the granulator (21) and the rotary cutting mechanism are all mounted on the frame. The feed end of the granulator is connected to the output end of the feed pipe (3). The rotary cutting mechanism is clearance-fitted with the output end of the granulator.

8. A PVC plastic granule processing device according to claim 7, characterized in that, The rotary cutting mechanism includes a fixed base (23) and a cutter (27). The fixed base (23) is mounted on the frame. A drive shaft (26) and a servo motor B (28) that drives the drive shaft (26) to rotate are rotatably mounted on the fixed base (23). The drive shaft is connected to the cutter (27), and the cutter (27) is in clearance fit with the molding die end face of the granulator (21).

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