PVC plastic energy-saving pelletizing device

Abstract

The utility model relates to a PVC plastic energy-saving pelletizing device which comprises a plastic extruder, an extrusion pipe is fixedly arranged on the right side wall of the plastic extruder, a cooling box is fixedly arranged on the right side of the extrusion pipe, a spraying pipe is fixedly arranged on the top of an inner cavity of the cooling box, and an air blowing head is fixedly arranged on the right side of the cooling box. A pelletizing box is fixedly arranged on the right side of the blowing head, a driving motor is fixedly installed on the right side wall of the pelletizing box, a cutting knife is fixedly installed on an output shaft of the driving motor, a fixing plate is rotationally arranged in an inner cavity of the pelletizing box, and the cutting knife makes contact with the fixing plate. And after entering the cooling box, the plastic strips are cooled through spraying, so that the plastic strips are effectively and quickly cooled and formed, then enter the pelletizing box, penetrate through a through hole in the fixing plate, and are gradually cut off by rotating a cutting knife, so that the pelletizing efficiency is improved, the plastic strips with different diameters can also be pelletized, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to a PVC plastic energy-saving pelletizing device, belonging to the technical field of plastic pelletizing. Background Art

[0002] At present, PVC granules are made by mixing and kneading PVC resin with various additives such as plasticizers, stabilizers, fillers, etc., and then extruding and granulating. In the production of PVC compounds, there are five main factors that affect product quality and production efficiency, namely equipment, raw materials, formula, color matching and production process. In the processing of existing PVC granules, PVC granules often need to be pelletized.

[0003] The utility model with patent number 201821474618.1 provides a PVC pellet cutting device. The utility model is provided with a fixed shell on the extrusion tube and the connecting rod and a first buffer rod on the fixed shell. Not only can the fixed shell be used to block the dust generated during pelletizing, but the first buffer rod can also be used to further buffer the vibration generated by the extrusion tube and the connecting rod, which is conducive to more practical use of the PVC pellet cutting device. It is more practical and suitable for wide promotion and use. However, the existing pelletizing devices all perform pelletizing at the outlet of the extruder, and the temperature of the plastic strips just extruded will also be higher, resulting in the plastic strips being softer during transportation and easily deformed during pelletizing, affecting the production quality of the plastic pellets. Utility Model Content

[0004] In view of the problems in the related technology, the utility model proposes a PVC plastic energy-saving pelletizing device to overcome the above technical problems existing in the existing related technology.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] A PVC plastic energy-saving pelletizing device comprises a plastic extruder, an extrusion tube is fixedly arranged on the right side wall of the plastic extruder, a cooling box is fixedly arranged on the right side of the extrusion tube, a spray pipe is fixedly arranged on the top of the inner cavity of the cooling box, a blowing head is fixedly arranged on the right side of the cooling box, a pelletizing box is fixedly arranged on the right side of the blowing head, a driving motor is fixedly installed on the right side wall of the pelletizing box, a cutting knife is fixedly installed on the output shaft of the driving motor, a fixing plate is rotatably arranged in the inner cavity of the pelletizing box, and the cutting knife contacts the fixing plate.

[0007] Preferably, guide wheels are symmetrically rotatably provided on both sides of the cooling box, and the penetration point at the top of the cooling box and the penetration point of the pelletizing box are at the same height as the extrusion tube.

[0008] Preferably, a water reservoir is provided at the bottom of the inner cavity of the cooling box, a water pump is fixedly installed on one side of the water reservoir, the water pump is connected to the spray pipe through a conduit, and spray heads are evenly fixed at the bottom of the spray pipe.

[0009] Preferably, a cooling pipe is fixedly provided on the right side of the cooling box, the water inlet end of the cooling pipe is connected to the water pump, the water outlet end is connected to the spray pipe, and the cooling pipe is arranged in an S shape, and the blowing head is located below the cooling pipe.

[0010] Preferably, a driving wheel is provided on the left side of the pelletizing box for symmetrical rotation up and down, one end of the driving wheel is fixedly connected to a stepping motor, and the other end of the driving wheel is fixedly provided with a gear ring, and the gear rings are directly meshed and connected.

[0011] Preferably, the fixed plate is evenly provided with through holes with different diameters, the left end of the drive motor output shaft is against the center of the fixed plate, a servo motor is fixedly installed on the top of the pelletizing box, and gears are provided on the output shaft of the servo motor and the outer side of the fixed plate, and the gears are meshed and connected.

[0012] The beneficial effects of the utility model are:

[0013] 1. By setting up a cooling box, when the PVC plastic is extruded from the plastic extruder, it is spray-cooled in the cooling box, which effectively allows the plastic strip to be quickly cooled and formed, thereby facilitating the subsequent pelletizing operation and improving its practicality;

[0014] 2. By setting up a pelletizing box, when the plastic strips after cooling and forming enter the pelletizing box again, they will pass through a through hole on the fixed plate, and the cutting knife will be driven by the driving motor to rotate, so that the plastic strips extending out of the through hole will be gradually cut off, thereby improving the efficiency of pelletizing;

[0015] 3. By setting a fixed plate, when the plastic strip enters the pelletizing box, the corresponding through hole on the fixed plate can be adjusted according to the diameter of the plastic strip, so as to ensure that the plastic strip can pass through the through hole smoothly, and the plastic strip will not shake randomly due to the large diameter of the through hole, thereby ensuring the uniformity of pelletizing and improving the quality of PVC pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of a PVC plastic energy-saving pelletizing device of the utility model;

[0018] Figure 2It is a cross-sectional schematic diagram of a cooling box of a PVC plastic energy-saving pelletizing device of the utility model;

[0019] Figure 3 This is a schematic diagram of the pelletizing box structure of a PVC plastic energy-saving pelletizing device of the utility model;

[0020] Figure 4 This is a schematic diagram of the driving wheel structure of a PVC plastic energy-saving pelletizing device of the utility model;

[0021] Numbers in the figure: 1. Plastic extruder; 2. Extrusion tube; 3. Cooling box; 4. Spray pipe; 5. Blowing head; 6. Pelletizing box; 7. Driving motor; 8. Cutting knife; 9. Fixed plate; 10. Water reservoir; 11. Water pump; 12. Cooling tube; 13. Driving wheel; 14. Stepping motor; 15. Gear ring; 16. Through hole; 17. Servo motor; 18. Gear bar. DETAILED DESCRIPTION

[0022] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] According to an embodiment of the utility model, a PVC plastic energy-saving pelletizing device is provided.

[0024] Embodiment 1

[0025] like Figure 1-4 As shown, a PVC plastic energy-saving pelletizing device according to an embodiment of the utility model comprises a plastic extruder 1, an extrusion tube 2 is fixedly provided on the right side wall of the plastic extruder 1, a cooling box 3 is fixedly provided on the right side of the extrusion tube 2, a spray pipe 4 is fixedly provided on the top of the inner cavity of the cooling box 3, a blowing head 5 is fixedly provided on the right side of the cooling box 3, a pelletizing box 6 is fixedly provided on the right side of the blowing head 5, a driving motor 7 is fixedly installed on the right side wall of the pelletizing box 6, a cutting knife 8 is fixedly installed on the output shaft of the driving motor 7, a fixed plate 9 is rotatably provided in the inner cavity of the pelletizing box 6, and the cutting knife 8 is in contact with the fixed plate 9, guide wheels are symmetrically rotatably provided on both sides of the cooling box 3, the penetration point on the top of the cooling box 3 and the penetration point of the pelletizing box 6 are both at the same height as the extrusion tube 2, so that the PVC plastic can be smoothly transported when it is just extruded.

[0026] Embodiment 2

[0027] like Figure 1-4As shown, a PVC plastic energy-saving pelletizing device according to an embodiment of the utility model comprises a plastic extruder 1, an extrusion tube 2 is fixedly arranged on the right side wall of the plastic extruder 1, a cooling box 3 is fixedly arranged on the right side of the extrusion tube 2, a spray pipe 4 is fixedly arranged on the top of the inner cavity of the cooling box 3, a blowing head 5 is fixedly arranged on the right side of the cooling box 3, a pelletizing box 6 is fixedly arranged on the right side of the blowing head 5, a driving motor 7 is fixedly installed on the right side wall of the pelletizing box 6, a cutting knife 8 is fixedly installed on the output shaft of the driving motor 7, a fixing plate 9 is rotatably arranged in the inner cavity of the pelletizing box 6, and the cutting knife 8 is in contact with the fixing plate 9, a water reservoir 10 is provided at the bottom of the inner cavity of the cooling box 3, a water guide pump 11 is fixedly installed on one side of the water reservoir 10, and the guide pump 11 is fixedly installed on one side of the water reservoir 10. The water pump 11 is connected to the spray pipe 4 through a conduit, and spray heads are evenly fixed at the bottom of the spray pipe 4. A cooling pipe 12 is fixed on the right side of the cooling box 3. The water inlet end of the cooling pipe 12 is connected to the water pump 11, and the water outlet end is connected to the spray pipe 4. The cooling pipe 12 is S-shaped. The blowing head 5 is located below the cooling pipe 12. The cooling water in the water reservoir 10 is sent into the cooling pipe 12 through the water pump 11. Air is blown onto the cooling pipe 12 through the blowing head 5, which effectively reduces the temperature of the cooling water and allows the cooling water to be recycled, thereby saving water usage and improving the cooling effect on the plastic strip. The blown wind can also blow to the plastic strip coming out of the cooling box 3, so that water stains on its surface can be removed to ensure the cleanliness of the surface.

[0028] Embodiment 3

[0029] like Figure 1-4As shown, a PVC plastic energy-saving pelletizing device according to an embodiment of the utility model comprises a plastic extruder 1, an extrusion tube 2 is fixedly arranged on the right side wall of the plastic extruder 1, a cooling box 3 is fixedly arranged on the right side of the extrusion tube 2, a spray pipe 4 is fixedly arranged on the top of the inner cavity of the cooling box 3, a blowing head 5 is fixedly arranged on the right side of the cooling box 3, a pelletizing box 6 is fixedly arranged on the right side of the blowing head 5, a driving motor 7 is fixedly installed on the right side wall of the pelletizing box 6, a cutting knife 8 is fixedly installed on the output shaft of the driving motor 7, a fixing plate 9 is rotatably arranged in the inner cavity of the pelletizing box 6, and the cutting knife 8 is in contact with the fixing plate 9, a driving wheel 13 is symmetrically rotated up and down on the left side of the pelletizing box 6, one end of the driving wheel 13 is fixedly connected to a stepping motor 14, and the other end of the driving wheel 13 is fixedly connected to a stepping motor 14. A gear ring 15 is fixedly provided, and the gear ring 15 is directly meshed and connected. The plastic strip is placed between the two driving wheels 13, and then driven to rotate by the stepper motor 14, thereby providing power for the transportation of the plastic strip to prevent the plastic strip from loosening during transportation. Through holes 16 are evenly opened on the fixed plate 9, and the diameters of the through holes 16 are different. The left end of the output shaft of the drive motor 7 is against the center of the fixed plate 9. A servo motor 17 is fixedly installed on the top of the pelletizing box 6. The output shaft of the servo motor 17 and the outer side of the fixed plate are both provided with gear bars 18, and the gear bars 18 are meshed and connected. When facing plastic strips of different diameters, the servo motor 17 can be used to drive the fixed plate 9 to rotate a certain angle, thereby changing the plastic strip passing through different through holes 16 to meet the requirements of pellets of different diameters.

[0030] In summary, with the aid of the above-mentioned technical solution of the utility model, when the device is in use, when the PVC plastic is extruded from the plastic extruder 1, it is spray-cooled when entering the cooling box 3, so that the plastic strip is effectively cooled and formed quickly, and then the formed plastic strip enters the pelletizing box 6, and passes through a through hole 16 on the fixed plate 9. The cutting knife 8 is driven by the driving motor 7 to rotate, so that the plastic strip extending out of the through hole 16 is gradually cut off, thereby improving the efficiency of its pelletizing. At the same time, when facing different plastic strip diameters, the corresponding through hole 16 on the fixed plate 9 can be adjusted to ensure that the plastic strip can pass through the through hole 16 smoothly, and the plastic strip will not shake arbitrarily due to the excessive diameter of the through hole 16, thereby ensuring the uniformity of pelletizing and improving the quality of the PVC pellets.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PVC plastic energy-saving pelletizing device, comprising a plastic extruder (1), characterized in that: An extrusion tube (2) is fixedly provided on the right side wall of the plastic extruder (1), a cooling box (3) is fixedly provided on the right side of the extrusion tube (2), a spray pipe (4) is fixedly provided on the top of the inner cavity of the cooling box (3), a blow head (5) is fixedly provided on the right side of the cooling box (3), a pelletizing box (6) is fixedly provided on the right side of the blow head (5), a driving motor (7) is fixedly installed on the right side wall of the pelletizing box (6), a cutting knife (8) is fixedly installed on the output shaft of the driving motor (7), a fixed plate (9) is rotatably provided in the inner cavity of the pelletizing box (6), and the cutting knife (8) is in contact with the fixed plate (9).

2. A PVC plastic energy-saving pelletizing device according to claim 1, characterized in that: The cooling box (3) is provided with guide wheels symmetrically rotating on both sides, and the top penetration point of the cooling box (3) and the penetration point of the pelletizing box (6) are both at the same height as the extrusion tube (2).

3. A PVC plastic energy-saving pelletizing device according to claim 2, characterized in that: A water reservoir (10) is provided at the bottom of the inner cavity of the cooling box (3), a water pump (11) is fixedly installed on one side of the water reservoir (10), the water pump (11) is connected to the spray pipe (4) through a conduit, and spray heads are evenly fixedly provided at the bottom of the spray pipe (4).

4. A PVC plastic energy-saving pelletizing device according to claim 3, characterized in that: A cooling pipe (12) is fixedly provided on the right side of the cooling box (3); the water inlet end of the cooling pipe (12) is connected to the water pump (11), and the water outlet end is connected to the spray pipe (4); the cooling pipe (12) is arranged in an S shape, and the blowing head (5) is located below the cooling pipe (12).

5. A PVC plastic energy-saving pelletizing device according to claim 4, characterized in that: A driving wheel (13) is symmetrically rotated up and down on the left side of the pelletizing box (6), one end of the driving wheel (13) is fixedly connected to a stepping motor (14), and the other end of the driving wheel (13) is fixedly provided with a gear ring (15), and the gear ring (15) is directly meshed and connected.

6. A PVC plastic energy-saving pelletizing device according to claim 5, characterized in that: The fixing plate (9) is evenly provided with through holes (16), and the diameters of the through holes (16) are different. The left end of the output shaft of the driving motor (7) is against the center of the fixing plate (9). A servo motor (17) is fixedly installed on the top of the pelletizing box (6). The output shaft of the servo motor (17) and the outer side of the fixing plate are both provided with gear bars (18), and the gear bars (18) are meshed and connected.

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