Extrusion granulator for preparing chlorinated polypropylene
By introducing a guiding mechanism and a rubber sleeve structure into the pelletizer, the problem of uneven pelletizing caused by excessive distance between the cutter and the drive roller was solved, achieving uniform cutting of polypropylene pellets and preventing overlap, thus improving pelletizing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-20
- Publication Date
- 2026-04-03
AI Technical Summary
In current pelletizers, the distance between the cutter and the drive roller is relatively large, which makes the polypropylene strips prone to breakage during pelletizing, resulting in uneven pelletizing.
A guiding mechanism is set in the pelletizing mechanism, including a connecting rod, a guide plate, a through groove, a mounting frame, and rolling wheels, to support and guide the polypropylene strips so that the cutter can cut accurately; at the same time, rubber sleeves are fitted on the outside of the upper and lower drive rollers, and annular grooves are provided to prevent overlap.
The guiding mechanism ensures that the polypropylene strips break uniformly during cutting, improving the uniformity of pelletizing, avoiding overlapping, and enhancing the pelletizing effect.
Smart Images
Figure CN224074731U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polypropylene preparation technology, specifically to an extrusion granulator for preparing chlorinated polypropylene. Background Technology
[0002] Polyethylene and polypropylene are the main products of large-scale ethylene projects and are currently the most in-demand and widely used basic synthetic resins.
[0003] When the polypropylene extrusion granulator is working, the molten polypropylene raw material first enters the screw feed cylinder, and then is extruded from the extrusion die under the drive of the internal screw rod to form a strip of polypropylene. The polypropylene strip is then guided to the cooling tank, and after cooling, it is put into the pelletizer to be pelletized.
[0004] However, in some pelletizers at present, the distance between the cutter and the drive roller is too far, which can easily cause the polypropylene strips to break at the drive roller during pelletizing, resulting in uneven pelletizing. Utility Model Content
[0005] The purpose of this invention is to provide an extrusion granulator for the preparation of chlorinated polypropylene, in order to solve the problem mentioned in the background art that in the existing pelletizers, the distance between the cutter and the drive roller is too far, which easily leads to the polypropylene strip breaking at the drive roller during pelletizing, resulting in uneven pelletizing.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an extrusion granulator for preparing chlorinated polypropylene, comprising a spiral feed cylinder, an extrusion template, a cooling tank and a pelletizing mechanism, wherein the output end of the spiral feed cylinder is equipped with an extrusion template, one end of the cooling tank is disposed below the extrusion template, and the other end of the cooling tank is provided with a pelletizing mechanism on the outside.
[0007] The inner wall of the pelletizing mechanism is equipped with a guiding mechanism, which includes a connecting rod, a guide plate, a through groove, a mounting frame, and a rolling wheel. One end of the connecting rod is installed on the inner wall of the pelletizing mechanism, and the other end of the connecting rod is equipped with a guide plate. The guide plate has a spindle-shaped cross-section, and the side wall of the guide plate has a through groove. The inner wall of the through groove is slidably equipped with a mounting frame, and the inner wall of the mounting frame is equipped with a rolling wheel. The rolling wheel can fit against the side wall of the outer polypropylene strip.
[0008] In a preferred embodiment of this utility model, the pelletizing mechanism includes a housing, a feed inlet, an upper drive roller, a lower drive roller, a cutter holder, a cutter, a spring, a motor, and a cam. The feed inlet is provided on the side wall of the housing. The upper drive roller and the lower drive roller are rotatably mounted on the inner side wall of the housing, and the center points of the upper drive roller and the lower drive roller are in the same vertical line. The guide plate is disposed between the upper drive roller and the lower drive roller. The cutter holder is slidably mounted on the inner side wall of the housing. One end of a spring is mounted on the upper wall of the cutter holder, and the other end of the spring is in contact with the inner side wall of the housing. The cutter is mounted on the side wall of the cutter holder and can be in contact with the side wall of the guide plate. The motor is inserted and installed on the inner side wall of the housing and is electrically connected to an external power source. A cam is mounted on the output end of the motor and can be in contact with the upper wall of the cutter holder.
[0009] As a preferred embodiment of this utility model, the side wall of the housing is provided with a discharge port, and the inner side wall of the discharge port is equipped with a discharge sloping plate.
[0010] In a preferred embodiment of this invention, the upper drive roller and the lower drive roller are respectively connected to an external drive motor, the upper drive roller and the lower drive roller rotate in opposite directions, and the outer side walls of the upper drive roller and the lower drive roller are fitted with rubber sleeves.
[0011] As a preferred embodiment of this utility model, the side wall of the extrusion template is provided with forming holes, the cooling tank is filled with water, a rotating roller is rotatably mounted on the inner side wall of the cooling tank, and the side wall of the rotating roller is provided with grooves.
[0012] As a preferred embodiment of this invention, both of the outer walls of the rubber sleeves are provided with annular grooves.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This device incorporates a guiding mechanism in its pelletizing mechanism, which supports and guides the polypropylene strips passing through the upper and lower drive rollers. This ensures that the polypropylene strips break at the cut point when the cutter cuts them, guaranteeing the uniformity of the polypropylene granules after pelletizing and improving the pelletizing effect of the device.
[0015] In addition, the device has an annular groove on the rubber sleeve that is fitted on the outside of the upper and lower drive rollers, so that the polypropylene strips entering between the two rollers can be spread out to avoid overlapping. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this patent;
[0017] Figure 2 This is a schematic diagram of the pelletizing mechanism of this patent;
[0018] Figure 3 This is a schematic diagram of the rubber sleeve structure of this patent.
[0019] In the diagram: 1. Spiral feed cylinder, 2. Extrusion template, 3. Cooling tank, 4. Pelletizing mechanism, 41. Machine housing, 42. Feed inlet, 43. Upper drive roller, 44. Lower drive roller, 45. Cutter holder, 46. Cutter, 47. Spring, 48. Motor, 49. Cam, 5. Guide mechanism, 51. Connecting rod, 52. Guide plate, 53. Through groove, 54. Mounting bracket, 55. Rolling wheel, 6. Discharge port, 7. Discharge inclined plate, 8. Rubber sleeve, 9. Forming hole, 10. Rotating roller, 11. Groove, 12. Annular groove. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-3 This utility model provides a technical solution:
[0022] In this technical solution, an extrusion granulator for preparing chlorinated polypropylene includes a screw feed cylinder 1, an extrusion template 2, a cooling tank 3 and a pelletizing mechanism 4. The output end of the screw feed cylinder 1 is equipped with the extrusion template 2, one end of the cooling tank 3 is located below the extrusion template 2, and the pelletizing mechanism 4 is located on the outer side of the other end of the cooling tank 3.
[0023] A guide mechanism 5 is installed on the inner wall of the pelletizing mechanism 4. The guide mechanism 5 includes a connecting rod 51, a guide plate 52, a through groove 53, a mounting frame 54, and a rolling wheel 55. One end of the connecting rod 51 is installed on the inner wall of the pelletizing mechanism 4, and the other end of the connecting rod 51 is installed with a guide plate 52. The cross-section of the guide plate 52 is spindle-shaped. A through groove 53 is opened on the side wall of the guide plate 52. The mounting frame 54 is slidably installed on the inner wall of the through groove 53. The rolling wheel 55 is installed on the inner wall of the mounting frame 54. The rolling wheel 55 can fit against the side wall of the external polypropylene strip.
[0024] In this technical solution, molten polypropylene raw material enters from the feed hopper above the screw feed cylinder 1. Under the action of the rotating screw, it is conveyed forward along the screw. When the melt is pushed to the die head by the screw, it will be extruded through the forming hole 9 on the extrusion template 2 to form strips. Then, the workers immerse the strips in the cooling tank 3, where the water in the cooling tank 3 cools the strips. The strips are then pulled between the upper drive roller 43 and the lower drive roller 44 in the pelletizing mechanism 4. The cooled strips are pulled by the two rollers. Then, the motor 48 in the pelletizing mechanism 4 is started. Through the cooperation between the cam 49 and the cutter holder 45, the cutter 46 is driven to move up and down to pelletize the strips.
[0025] Meanwhile, the guiding mechanism 5 in the pelletizing mechanism 4 can support and guide the polypropylene strips passing through the upper drive roller 43 and the lower drive roller 44, so that when the cutter 46 cuts the polypropylene strips, the polypropylene strips break at the cutting point of the cutter 46, ensuring the uniformity of the polypropylene granules after pelletizing and improving the pelletizing effect of the device.
[0026] In some technical solutions, the pelletizing mechanism 4 includes a housing 41, a feed inlet 42, an upper drive roller 43, a lower drive roller 44, a cutter holder 45, a cutter 46, a spring 47, a motor 48, and a cam 49. The feed inlet 42 is provided on the side wall of the housing 41, and the upper drive roller 43 and the lower drive roller 44 are rotatably mounted on the inner side wall of the housing 41. The center points of the upper drive roller 43 and the lower drive roller 44 are in the same vertical line, and a guide plate 52 is provided between the upper drive roller 43 and the lower drive roller 44. In the machine housing 41, a cutter holder 45 is slidably installed on the inner side wall. One end of a spring 47 is installed on the upper wall of the cutter holder 45, and the other end of the spring 47 is in contact with the inner side wall of the machine housing 41. A cutter 46 is installed on the side wall of the cutter holder 45, and the cutter 46 can be in contact with the side wall of the guide plate 52. A motor 48 is inserted and installed on the inner side wall of the machine housing 41. The motor 48 is electrically connected to an external power source. A cam 49 is installed on the output end of the motor 48, and the cam 49 can be in contact with the upper wall of the cutter holder 45.
[0027] In this technical solution, when the motor 48 starts, it can drive the cam 49 to rotate. When the cam 49 rotates, it will push the cutter holder 45, causing the cutter holder 45 to move up and down reciprocally, so that the cutter 46 cuts the polypropylene strip that passes through the guide plate 52, making it into uniformly sized particles.
[0028] The length of the polypropylene granules can be adjusted by adjusting the rotation speed of the motor 48, thereby adjusting the movement speed of the cutter 46.
[0029] In some technical solutions, the side wall of the housing 41 is provided with a discharge port 6, and the inner side wall of the discharge port 6 is equipped with a discharge ramp 7.
[0030] In this technical solution, the granulated polypropylene pellets are discharged through the discharge ramp 7 at the discharge port 6.
[0031] In some technical solutions, the upper drive roller 43 and the lower drive roller 44 are respectively connected to an external drive motor. The upper drive roller 43 and the lower drive roller 44 rotate in opposite directions. The outer side walls of the upper drive roller 43 and the lower drive roller 44 are fitted with rubber sleeves 8.
[0032] In this technical solution, the rubber sleeve 8 can improve the friction between the upper drive roller 43, the lower drive roller 44 and the polypropylene strip, thus ensuring the traction effect of the upper drive roller 43 and the lower drive roller 44 on the polypropylene strip.
[0033] In some technical solutions, the side wall of the extrusion template 2 is provided with forming holes 9, the cooling tank 3 is filled with water, and a rotating roller 10 is rotatably installed on the inner side wall of the cooling tank 3. The side wall of the rotating roller 10 is provided with grooves 11.
[0034] In this technical solution, the water in the cooling tank 3 can cool the polypropylene strip, making it easier to pelletize it later by the pelletizing mechanism 4. The rotating roller 10 can press the polypropylene strip, making it move under the water in the cooling tank 3.
[0035] In some technical solutions, annular grooves 12 are provided on the outer walls of both rubber sleeves 8.
[0036] In this technical solution, the annular groove 12 can be used to spread out the polypropylene strips that enter between the two rollers, thus avoiding overlapping.
[0037] Working principle: Molten polypropylene raw material enters from the feed hopper above the screw feed cylinder 1. Under the action of the rotating screw, it is conveyed forward along the screw. When the melt is pushed to the die head by the screw, it will be extruded into strips through the forming hole 9 on the extrusion template 2. Then, the operator immerses the strips in the cooling tank 3. The strips are cooled by the water in the cooling tank 3 and then pulled between the upper drive roller 43 and the lower drive roller 44 in the pelletizing mechanism 4. The cooled strips are pulled by the two rollers. Then, the motor 48 in the pelletizing mechanism 4 is started. Through the cooperation between the cam 49 and the cutter holder 45, the cutter 46 is driven to move up and down to pelletize the strips.
[0038] Meanwhile, the guiding mechanism 5 in the pelletizing mechanism 4 can support and guide the polypropylene strips passing through the upper drive roller 43 and the lower drive roller 44, so that when the cutter 46 cuts the polypropylene strips, the polypropylene strips break at the cutting point of the cutter 46, ensuring the uniformity of the polypropylene granules after pelletizing and improving the pelletizing effect of the device.
[0039] 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.
[0040] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A chlorinated polypropylene preparation extrusion granulator, comprising a spiral feeding cylinder (1), an extrusion die plate (2), a cooling tank (3) and a cutting mechanism (4), characterized in that: The output end of the spiral feeding barrel (1) is provided with an extrusion die plate (2), one end of the cooling groove (3) is arranged below the extrusion die plate (2), and the outer side of the other end of the cooling groove (3) is provided with a pelletizing mechanism (4); The inner side wall of the pelletizing mechanism (4) is provided with a guide mechanism (5), the guide mechanism (5) comprises a connecting rod (51), a guide plate (52), a through groove (53), a mounting frame (54) and a rolling wheel (55), one end of the connecting rod (51) is mounted on the inner wall of the pelletizing mechanism (4), the other end of the connecting rod (51) is provided with the guide plate (52), the cross section of the guide plate (52) is shuttle-shaped, the side wall of the guide plate (52) is provided with the through groove (53), the inner side wall of the through groove (53) is slidably provided with the mounting frame (54), the inner side wall of the mounting frame (54) is provided with the rolling wheel (55), and the rolling wheel (55) can be attached to the side wall of the external polypropylene strip.
2. The extrusion granulator for preparing chlorinated polypropylene according to claim 1, characterized in that: The pelletizing mechanism (4) comprises a shell (41), a feeding port (42), an upper driving roller (43), a lower driving roller (44), a cutter holder (45), a cutter (46), a spring (47), a motor (48) and a cam (49), the side wall of the shell (41) is provided with the feeding port (42), the inner side wall of the shell (41) is rotatably provided with the upper driving roller (43) and the lower driving roller (44), the center points of the upper driving roller (43) and the lower driving roller (44) are in the same vertical line, the guide plate (52) is arranged between the upper driving roller (43) and the lower driving roller (44), the inner side wall of the shell (41) is slidably provided with the cutter holder (45), one end of the spring (47) is mounted on the upper wall of the cutter holder (45), the other end of the spring (47) is attached to the inner side wall of the shell (41), the side wall of the cutter holder (45) is provided with the cutter (46), the cutter (46) can be attached to the side wall of the guide plate (52), the inner side wall of the shell (41) is insertedly provided with the motor (48), the motor (48) is electrically connected with an external power source, the output end of the motor (48) is provided with the cam (49), and the cam (49) can be attached to the upper wall of the cutter holder (45).
3. The extrusion granulator for producing chlorinated polypropylene according to claim 2, characterized in that: The side wall of the shell (41) is provided with a discharge port (6), and the inner side wall of the discharge port (6) is provided with a discharge inclined plate (7).
4. The extrusion granulator for preparing chlorinated polypropylene according to claim 2, characterized in that: The upper driving roller (43) and the lower driving roller (44) are respectively connected with external driving motors, the rotating directions of the upper driving roller (43) and the lower driving roller (44) are opposite, and the outer side walls of the upper driving roller (43) and the lower driving roller (44) are both sleeved with rubber sleeves (8).
5. The extrusion granulator for preparing chlorinated polypropylene according to claim 1, characterized in that: The side wall of the extrusion die plate (2) is provided with a forming hole (9), the cooling groove (3) is filled with water, and the inner side wall of the cooling groove (3) is rotatably provided with a rotating roller (10).
6. The extrusion granulator for preparing chlorinated polypropylene according to claim 4, characterized in that: The outer side walls of the two rubber sleeves (8) are both provided with annular grooves (12).