Pelletizing and extruding device for polypropylene nucleating agent

Abstract

The present invention discloses a polypropylene nucleating agent granulation extrusion device, and relates to the field of granulation extrusion devices, the polypropylene nucleating agent granulation extrusion device comprises an extrusion granulation mechanism, the extrusion granulation mechanism is fixedly mounted on a support frame, the support frame and a box body are mutually fixed, a separation plate is fixed in the box body, a gap is formed in the separation plate, and the gap is formed in the separation plate. And a second motor is fixed to the lower end face of the partition plate, and a feeding plate which makes contact with the partition plate in a sliding mode is fixed to an output shaft of the second motor. According to the granulation extrusion device for the polypropylene nucleating agent, the rotary feeding mechanism is adopted, the continuous conveying effect of particles can be achieved, the linkage swing type rubbing mechanism is matched, rubbing acting force can be provided for the particles in the particle conveying process, chippings adhering to the cutting faces of the particles can be effectively removed through particle rubbing, and the production efficiency is improved. And under the screening action of the sieve plate, the separation of the chippings and the particles can be realized, so that the cleanness of the surfaces of the particles is effectively ensured, and the production quality of the particles is further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of granulating and extruding devices, and particularly to a granulating and extruding device for polypropylene nucleating agents. Background Art

[0002] The main function of polypropylene nucleating agents is to improve its processing efficiency and physical and mechanical properties by changing the crystallization behavior of polypropylene, specifically manifested as shortening the molding cycle, increasing transparency, gloss, enhancing mechanical properties (such as rigidity and impact resistance), and improving the heat distortion temperature, etc. During the production process of polypropylene nucleating agents, granulation is required through a granulating device for subsequent use. Existing granulating devices for polypropylene nucleating agents, such as the granulating device for producing polypropylene toughening nucleating agents with the publication number CN220194789U, include a feeding pipe, a feeding box, and a stirring motor. One side of the top of the feeding pipe is fixed with a feeding box, a stirring motor is installed on the outer wall of one side of the feeding box, and a stirring structure is arranged at the top of the feeding box. In this utility model, by setting up a granulating mechanism, when the driving motor is started, the driving motor will drive the driving gear to rotate inside the protective cover, the driving gear will drive the first cutting roller to rotate inside the machine box, and at the same time, the driving gear will drive the driven gear to rotate, and the driven gear will drive the second cutting roller to rotate. With the mutual cooperation of the first cutting roller and the second cutting roller, the function of facilitating granulation of the device is realized, thereby improving the working efficiency of the granulating device for producing polypropylene toughening nucleating agents during use. In the actual use process of existing extrusion and cutting granulating devices, since granulation is achieved by cutting particles with a cutter, certain debris will adhere and remain on the cutting surface of the particles. And because the debris adheres to the particles, traditional screening cannot remove it, which will not only affect the appearance quality of the particles, but also cause the adhered debris to fall off due to friction between the particles during subsequent bagging and transportation. As a result, when the subsequent particles are poured out for use, the flying debris will not only cause environmental pollution but also result in a certain amount of material waste. Summary of the Invention

[0003] The purpose of the present invention is to provide a granulating and extruding device for polypropylene nucleating agents to solve the problems raised in the above background art.

[0004] To achieve the above object, the present invention provides the following technical solution: A granulation extrusion device for a polypropylene nucleating agent, comprising an extrusion granulation mechanism, the extrusion granulation mechanism is fixedly installed on a support frame, the support frame is fixedly connected to a box body, a partition plate is fixed inside the box body, a notch is provided on the partition plate, a second motor is fixed on the lower end surface of the partition plate, a feeding plate that contacts and slides with the partition plate is fixed on the output shaft of the second motor, and openings for limiting particles are provided on the feeding plate. A cylinder connected by a bearing is fixed on the feeding plate inside the box body. A kneading mechanism that can swing reciprocally is installed on the output shaft of the second motor. The kneading mechanism includes a kneading plate with upwardly curved arc-shaped structures on both sides that contacts and slides with the feeding plate. The kneading plate is used for kneading the particles in the openings on the feeding plate.

[0005] Preferably, the extrusion granulation mechanism includes a feeding box fixed on the support frame, a storage box is fixed on the feeding box, and a pressing mechanism is installed on the storage box. A first motor is fixed on the side of the feeding box, and the output end of the first motor is fixedly connected to a spiral conveyor rod connected by a bearing inside the feeding box. Through the above structure, the transportation and extrusion of raw materials can be realized, thus providing a basic guarantee for granulation.

[0006] Preferably, a granulation plate is installed on the right side of the feeding box, granulation holes are evenly provided on the granulation plate, an installation sleeve installed on the spiral conveyor rod is provided on the side of the granulation plate, and a cutter that is slidably connected to the granulation plate is installed on the installation sleeve. Through the above structure, the cutting of the material extruded from the granulation holes can be realized, thus achieving the granulation effect of the material.

[0007] Preferably, the pressing mechanism includes a fixing plate fixed inside the storage box, a sliding rod is slidably connected to the fixing plate, pressing plates are fixedly provided at equal intervals on the sliding rod, and the pressing plates are in a conical structure. By moving the pressing plates up and down, the downward pressing of the material can be realized, so that the material can better enter the feeding box and ensure the normal progress of granulation.

[0008] Preferably, one end of the sliding rod is fixedly connected to a connecting rod, the other end of the connecting rod is fixed to a toothed ring, the toothed ring meshes with a semi-gear, and the semi-gear is fixed on the output shaft of the first motor. Through the transmission between the toothed ring and the semi-gear, a basic acting force can be provided for the reciprocating movement up and down of the sliding rod and the connecting rod, thus ensuring the normal operation of the device.

[0009] Preferably, a receiving port located below the granulation plate is provided on the upper side of the box body, a discharge port is provided on the left side of the box body, a slag discharge port is provided on the lower side of the box body, and a sieve plate that is inclined and fixed with the left side lower and the right side higher is fixed inside the box body. Through the sieve plate, the screening of particles and debris can be realized, thus ensuring the cleanliness of the particle surface and avoiding the residue of debris.

[0010] Preferably, a baffle is fixed inside the box body, and the baffle is in contact with and slides on the upper end surface of the granulation plate. A material distribution plate is also fixed inside the box body, and the distance between the material distribution plate and the granulation plate is 1 - 5 mm. The baffle can block the material, and with the cooperation of the material distribution plate, the material can be distributed, providing a basic guarantee for the subsequent rubbing and impurity removal of the particles.

[0011] Preferably, the material kneading mechanism includes a driving wheel fixed on the output shaft of the second motor. The driving wheel is connected to a driven wheel through a belt, and the diameter of the driving wheel is larger than that of the driven wheel. At the same time, the driven wheel is fixed on a rotating shaft, and the rotating shaft is connected to the upper end surface of the box body through bearings. Through the above structure, a basic driving force can be provided for the rotation of the rotating shaft, thus ensuring the normal operation of the device.

[0012] Preferably, a disc is fixed at the upper end of the rotating shaft, and a convex shaft is fixed on the disc. The convex shaft is in sliding connection with a swing rod, and the swing rod is connected to a bracket through bearings. The bracket is fixed on the upper end surface of the box body. Through the sliding action between the convex shaft and the swing rod, a basic driving force can be provided for the reciprocating swing of the bracket, and further provide a basic guarantee for realizing particle kneading.

[0013] Preferably, one end of the bracket is fixedly connected to one end of a vertical rod. The vertical rod is in sliding connection with the box body, and the other end of the vertical rod is fixed on a mounting plate. A guide rod is slidably connected to the mounting plate, and the guide rods are symmetrically fixed on the front and back of a kneading plate. One end of the kneading plate is fixedly connected to one end of a spring, and the other end of the spring is fixed on the mounting plate. Through the above structure, the rubbing and de - chipping effect of the particles can be realized, avoiding the adhesion of debris on the particle surface and ensuring the production quality of the particles.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. For the granulation extrusion device of this polypropylene nucleating agent, the screw extrusion granulation mechanism is adopted, which can realize the extrusion granulation of raw materials, ensure the normal progress of granulation. Then, with the cooperation of the linked pressure - feeding mechanism, a downward pressure can be provided for the raw materials stored in the storage box, ensuring that the raw materials can stably enter the feeding box, effectively avoiding the blockage caused by the accumulation of raw materials and affecting the normal feeding. 2. For the granulation extrusion device of this polypropylene nucleating agent, the rotary feeding mechanism is adopted, which can realize the continuous conveying of particles. With the cooperation of the linked swing - type kneading mechanism, a kneading force can be provided for the particles during the particle conveying process. Through particle kneading, the debris adhered to the cutting surface of the particles can be effectively removed. With the elastic action of the spring, it can effectively prevent the kneading force of the kneading plate on the material from being too large and causing the material to break, thus ensuring the de - chipping effect of the material. Then, with the screening effect of the sieve plate, the separation of debris and particles can be realized, effectively ensuring the cleanliness of the particle surface and further ensuring the production quality of the particles. Description of the Drawings

[0015] Figure 1 This is the overall front view three-dimensional structure schematic diagram of the device of the present invention; Figure 2 This is the overall side view three-dimensional structure schematic diagram of the device of the present invention; Figure 3 This is the front view sectional three-dimensional structure schematic diagram of the extrusion granulation mechanism of the present invention; Figure 4 This is the three-dimensional structure schematic diagram composed of the granulation plate and the cutter of the present invention; Figure 5 This is the sectional three-dimensional structure schematic diagram of the material pressing mechanism of the present invention; Figure 6 This is the front view sectional three-dimensional structure schematic diagram of the box body of the present invention; Figure 7 This is the bottom view sectional three-dimensional structure schematic diagram of the box body of the present invention; Figure 8 This is the three-dimensional structure schematic diagram of the material kneading mechanism of the present invention.

[0016] In the figure: 1. Extrusion granulation mechanism; 101. Feeding box; 102. Storage box; 103. First motor; 104. Screw conveyor; 105. Granulation plate; 106. Installation sleeve; 107. Cutter; 2. Material pressing mechanism; 201. Fixed plate; 202. Slide bar; 203. Pressing plate; 204. Connecting rod; 205. Tooth ring; 206. Half gear; 3. Support frame; 4. Box body; 401. Material receiving port; 402. Discharge port; 403. Slag discharge port; 404. Sieve plate; 405. Baffle; 406. Material distributing plate; 5. Partition plate; 501. Notch; 502. Second motor; 503. Feeding plate; 504. Cylinder; 6. Material kneading mechanism; 601. Driving wheel; 602. Driven wheel; 603. Rotating shaft; 604. Disc; 605. Convex shaft; 606. Swing rod; 607. Support; 608. Vertical rod; 609. Installation plate; 610. Guide rod; 611. Kneading plate; 612. Spring. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1 - 8, the present invention provides a technical solution: a granulation and extrusion device for a polypropylene nucleating agent, including an extrusion granulation mechanism 1, the extrusion granulation mechanism 1 is fixedly installed on a support frame 3, the support frame 3 is fixedly connected to a box body 4, a partition plate 5 is fixedly installed inside the box body 4, a notch 501 is opened on the partition plate 5, a second motor 502 is fixedly installed on the lower end surface of the partition plate 5, a feeding plate 503 that contacts and slides with the partition plate 5 is fixedly installed on the output shaft of the second motor 502, and an opening for particle limiting is opened on the feeding plate 503. A cylinder 504 connected by a bearing is fixedly installed on the feeding plate 503 inside the box body 4. A kneading mechanism 6 that can swing reciprocally is installed on the output shaft of the second motor 502. The kneading mechanism 6 includes a kneading plate 611 with arc surface structures that are bent upward on both sides and contact and slide with the feeding plate 503. The kneading plate 611 is used for kneading the particles in the opening on the feeding plate 503.

[0019] The extrusion granulation mechanism 1 includes a feeding box 101 fixed on the support frame 3, a storage box 102 is fixedly installed on the feeding box 101, and a pressing mechanism 2 is installed on the storage box 102. A first motor 103 is fixedly installed on the side of the feeding box 101, and the output end of the first motor 103 is fixedly connected to a spiral conveyor rod 104 connected by a bearing inside the feeding box 101; A granulation plate 105 is installed on the right side of the feeding box 101, and granulation holes are evenly opened on the granulation plate 105. An installation sleeve 106 installed on the spiral conveyor rod 104 is arranged on the side of the granulation plate 105. At the same time, a cutting knife 107 that is slidably connected to the granulation plate 105 is installed on the installation sleeve 106; The pressing mechanism 2 includes a fixing plate 201 fixed inside the storage box 102, a sliding rod 202 is slidably connected to the fixing plate 201, and pressing plates 203 are fixedly installed on the sliding rod 202 at equal intervals. At the same time, the pressing plates 203 are conical structures; One end of the sliding rod 202 is fixedly connected to one end of a connecting rod 204, and the other end of the connecting rod 204 is fixedly connected to a gear ring 205. At the same time, the gear ring 205 meshes with a half gear 206, and the half gear 206 is fixed on the output shaft of the first motor 103; When using this granulation and extrusion device for the polypropylene nucleating agent, such as Figures 1 - 5As shown in the figure, first, the raw materials are put into the storage bin 102. When granulating, the first motor 103 is started. The spiral conveyor rod 104 is driven by the first motor 103 to rotate, and the raw materials entering the feeding box 101 from the storage bin 102 can be conveyed from left to right. When the raw materials move to the rightmost side and contact the granulation plate 105, at this time, through the conveying action of the spiral conveyor rod 104 on the raw materials, the extrusion of the raw materials can be realized, so that the raw materials can be extruded outwards through the granulation holes on the granulation plate 105. And when the spiral conveyor rod 104 rotates, the mounting sleeve 106 and the cutting knife 107 can be driven to rotate synchronously. Through the rotation of the cutting knife 107, the materials at the granulation holes on the granulation plate 105 can be cut, so as to realize the granulation function. And during the granulation process, when the first motor 103 is started, the semi-gear 206 will be driven to rotate synchronously. With the meshing transmission between the semi-gear 206 and the toothed ring 205, the toothed ring 205, the connecting rod 204 and the sliding rod 202 can move up and down orderly. With the sliding guiding function between the sliding rod 202 and the fixed plate 201, the stability of the movement of the toothed ring 205, the connecting rod 204 and the sliding rod 202 can be ensured. When the sliding rod 202 moves upward, the pressing plate 203 is driven to move upward synchronously. With the inclined plane structure on the upper side of the pressing plate 203, the resistance of the materials received by the upward movement of the pressing plate 203 can be reduced. When the sliding rod 202 drives the pressing plate 203 to move downward, at this time, the pressing plate 203 can provide a downward pressing force on the materials below the pressing plate 203, which can not only press the materials in the storage bin 102 into the feeding box 101 to avoid material blockage and affect normal feeding, but also improve the density of the materials in the feeding box 101 through the synchronous downward pressing action, so as to better meet the granulation requirements of the materials; On the upper side of the box body 4, there is a material receiving port 401 located below the granulation plate 105, and on the left side of the box body 4, there is a discharge port 402, and on the lower side of the box body 4, there is a slag discharge port 403. Meanwhile, a sieve plate 404 with a lower left and higher right is fixedly inclined inside the box body 4; a baffle 405 is fixed inside the box body 4, and the baffle 405 is in contact and slides with the upper end surface of the granulation plate 105. A material distribution plate 406 is also fixed inside the box body 4, and the distance between the material distribution plate 406 and the granulation plate 105 is 1 - 5 mm; the material kneading mechanism 6 includes a driving wheel 601 fixed on the output shaft of the second motor 502, and the driving wheel 601 is connected to a driven wheel 602 through a belt. Moreover, the diameter of the driving wheel 601 is larger than that of the driven wheel 602. Meanwhile, the driven wheel 602 is fixed on a rotating shaft 603, and the rotating shaft 603 is connected to the upper end surface of the box body 4 through bearings; a disc 604 is fixed at the upper end of the rotating shaft 603, and a convex shaft 605 is fixed on the disc 604. Moreover, the convex shaft 605 is in sliding connection with a swing rod 606, and the swing rod 606 is connected to a bracket 607 through bearings. The bracket 607 is fixed on the upper end surface of the box body 4; one end of the bracket 607 is fixedly connected to one end of a vertical rod 608, and the vertical rod 608 is in sliding connection with the box body 4. Moreover, the other end of the vertical rod 608 is fixed on a mounting plate 609. Meanwhile, a guide rod 610 is slidably connected to the mounting plate 609, and the guide rods 610 are symmetrically fixed on the front and back of a kneading plate 611. The kneading plate 611 is fixedly connected to one end of a spring 612, and the other end of the spring 612 is fixed on the mounting plate 609; During the operation of the device, the second motor 502 is started synchronously, as Figures 1 - 8As shown in the figure, after the material is pelletized, it automatically enters the box body 4 through the material receiving port 401 under the action of gravity. At this time, part of the material falls onto the feeding plate 503. With the blocking effect of the baffle plate 405 and the material distributing plate 406, the material can be accumulated between the baffle plate 405 and the material distributing plate 406. When the second motor 502 is started, the feeding plate 503 can be driven to rotate by the second motor 502. At this time, the material falling into the openings on the feeding plate 503 moves along with the feeding plate 503. Since the openings on the feeding plate 503 are strip-shaped structures, a certain number of material particles can be stored in each opening, and the height of the material particles is higher than the depth of the openings on the feeding plate 503. When the material in the openings on the feeding plate 503 moves, since the distance between the material distributing plate 406 and the granulating plate 105 is 1-5 mm, it can block the accumulated material particles from moving along with the feeding plate 503, so as to ensure that the material particles are evenly dispersed and move in the openings on the feeding plate 503. When the second motor 502 is started, the driving wheel 601 can be driven to rotate synchronously. With the transmission effect between the driving wheel 601 and the driven wheel 602, the rotating shaft 603, the disc 604 and the convex shaft 605 can be rotated. With the sliding effect between the convex shaft 605 and the swing rod 606, the swing rod 606 can make an orderly reciprocating swing, thus driving the vertical rod 608, the mounting plate 609 and the kneading plate 611 to make a reciprocating swing. When the feeding plate 503 drives the material particles to move until the material particles contact the kneading plate 611, through the reciprocating swing action of the kneading plate 611, the kneading effect of the material particles can be realized. By kneading the material particles, friction is generated between the material particles, and with the elastic effect of the spring 612, it can effectively prevent the kneading force of the kneading plate 611 on the material from being too large and causing the material to break, so as to effectively remove the residual debris adhered to the cutting surface of the material particles. After being kneaded, the material particles continue to rotate under the action of the feeding plate 503. When the position of the material particles matches that of the notch 501, at this time, under the action of gravity, the material particles and the debris automatically fall and contact the sieve plate 404. Through the inclined effect of the sieve plate 404, the material particles can roll towards the discharge port 402 to realize discharging, and through the action of the sieve plate 404, the separation of the material particles and the debris can be realized. The debris falls and is discharged through the slag discharge port 403 for collection. This is the working principle of the granulating and extruding device of the polypropylene nucleating agent.

[0020] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0021] In this article, specific examples are used to elaborate on the principles and implementation methods of the present invention. The descriptions of the above examples are only for helping to understand the method and its core idea of the present invention. The above is only the preferred implementation method of the present invention. It should be noted that due to the limited nature of literal expression and objectively there are infinite specific structures, for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements, embellishments or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, embellishments, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A granulation extrusion device for a polypropylene nucleating agent, comprising an extrusion granulation mechanism (1), the extrusion granulation mechanism (1) is fixedly installed on a support frame (3), and the support frame (3) is fixedly connected to a box body (4), characterized in that: A partition plate (5) is fixed inside the box body (4). A notch (501) is formed on the partition plate (5). A second motor (502) is fixed on the lower end face of the partition plate (5). A feeding plate (503) which is in contact with and slides on the partition plate (5) is fixed on the output shaft of the second motor (502). An opening for limiting particles is formed on the feeding plate (503). A cylinder (504) which is connected by bearings in the box body (4) is fixed on the feeding plate (503). A kneading mechanism (6) which can swing reciprocally is installed on the output shaft of the second motor (502). The kneading mechanism (6) includes a kneading plate (611) with arc surface structures bent upward on both sides which is in contact with and slides on the feeding plate (503). The kneading plate (611) is used for kneading the particles in the opening on the feeding plate (503). The kneading mechanism (6) includes a driving wheel (601) fixed on the output shaft of the second motor (502). The driving wheel (601) is connected with a driven wheel (602) through a belt. The diameter of the driving wheel (601) is larger than that of the driven wheel (602). At the same time, the driven wheel (602) is fixed on a rotating shaft (603). The rotating shaft (603) is connected by bearings on the upper end face of the box body (4). A disc (604) is fixed on the upper end of the rotating shaft (603). A convex shaft (605) is fixed on the disc (604). A sliding connection is formed between the convex shaft (605) and a swing rod (606). At the same time, the swing rod (606) is connected by bearings on a bracket (607). The bracket (607) is fixed on the upper end face of the box body (4). One end of the bracket (607) is fixedly connected with one end of a vertical rod (608). A sliding connection is formed between the vertical rod (608) and the box body (4). The other end of the vertical rod (608) is fixed on a mounting plate (609). At the same time, a guide rod (610) is slidably connected on the mounting plate (609). The guide rods (610) are symmetrically fixed on the front and back of the kneading plate (611). One end of the kneading plate (611) is fixedly connected with one end of a spring (612). The other end of the spring (612) is fixed on the mounting plate (609).

2. The granulation extrusion device for a polypropylene nucleating agent according to claim 1, characterized in that: The extrusion granulation mechanism (1) includes a feeding box (101) fixed on a support frame (3). A storage box (102) is fixed on the feeding box (101). A pressing mechanism (2) is installed on the storage box (102). A first motor (103) is fixed on the side of the feeding box (101). The output end of the first motor (103) is fixedly connected with a spiral conveying rod (104) which is connected by bearings in the feeding box (101).

3. The granulation extrusion device for a polypropylene nucleating agent according to claim 2, characterized in that: A granulation plate (105) is installed on the right side of the feeding box (101). Granulation holes are evenly formed on the granulation plate (105). An installation sleeve (106) installed on the spiral conveying rod (104) is arranged on the side of the granulation plate (105). At the same time, a cutter (107) which is slidably connected with the granulation plate (105) is installed on the installation sleeve (106).

4. The granulation and extrusion device for a polypropylene nucleating agent according to claim 2, characterized in that: The pressure-feeding mechanism (2) includes a fixing plate (201) fixed inside the storage bin (102). A sliding rod (202) is slidably connected to the fixing plate (201), and pressing plates (203) are fixedly arranged on the sliding rod (202) at equal intervals. Meanwhile, the pressing plates (203) are of a conical structure.

5. The granulation and extrusion device for a polypropylene nucleating agent according to claim 4, characterized in that: One end of the sliding rod (202) is fixedly connected to one end of a connecting rod (204), and the other end of the connecting rod (204) is fixed to a toothed ring (205). The toothed ring (205) meshes with a half gear (206), and the half gear (206) is fixed to the output shaft of a first motor (103).

6. The granulation extrusion device for a polypropylene nucleating agent according to claim 1, characterized in that: On the upper side of the box body (4), there is a material receiving port (401) located below the granulating plate (105). On the left side of the box body (4), there is a discharge port (402). On the lower side of the box body (4), there is a slag discharge port (403). Meanwhile, a sieve plate (404) with a lower left and higher right inclination is fixedly arranged inside the box body (4).

7. The granulation extrusion device for a polypropylene nucleating agent according to claim 6, characterized in that: A baffle plate (405) is fixed inside the box body (4), and the baffle plate (405) is in contact with and slides on the upper end surface of the granulating plate (105). A material distributing plate (406) is also fixed inside the box body (4), and the distance between the material distributing plate (406) and the granulating plate (105) is 1 - 5 mm.

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