A plastic production mixing kettle

Abstract

This utility model belongs to the field of plastic production technology, specifically disclosing a mixing tank for plastic production, including a base frame, on which four sets of frame shafts are fixedly connected. Each of the four sets of frame shafts has a lower spring movably fitted on its outer surface. A tank body is slidably fitted onto the outer surface of the four sets of frame shafts. A feed hopper is fixedly connected to the outer surface of the tank body. An elastic lifting and scraping mechanism is provided on the tank body, and an eccentric drive mechanism is provided on the base frame. This mixing tank for plastic production, through the elastic lifting and scraping mechanism and the eccentric drive mechanism, can drive a lifting rod to reciprocate, causing a small-angle scraper and a large-angle scraper to work together. The large-angle scraper first initially scrapes away the thicker residual layer, while the small-angle scraper then performs a fine scraping, which can more thoroughly remove residual materials from the inner wall of the tank, effectively reducing the instability of the next batch of product performance and cross-contamination problems caused by the decomposition or volatilization of residual raw material additives.

Description

Technical Field

[0001] This application relates to the field of plastic production technology, specifically to a mixing reactor for plastic production. Background Technology

[0002] Mixing kettles for plastic production are one of the core pieces of equipment in the plastics processing industry. They are mainly used to uniformly mix various raw materials (such as plastic resins, additives, fillers, pigments, etc.) according to the formula ratio, so as to provide materials with stable properties and consistent composition for subsequent molding processes.

[0003] After the plastic raw materials are mixed in the mixing tank, a certain amount of raw materials will adhere to the inner wall of the mixing tank, resulting in residues. Additives (such as plasticizers and stabilizers) in the residual raw materials may decompose or volatilize, leading to unstable performance of the next batch of products and easily causing cross-contamination. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and to propose a mixing kettle for plastic production to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a mixing reactor for plastic production, including a base frame, on which four sets of frame shafts are fixedly connected. The outer surfaces of the four sets of frame shafts are movably fitted with lower springs, and the outer surfaces of the four sets of frame shafts are slidably fitted with a reactor body. The outer surface of the reactor body is fixedly connected to a feed hopper, and a discharge valve is provided at the bottom of the reactor body. An elastic lifting and scraping mechanism is provided on the reactor body, and an eccentric drive mechanism is provided on the base frame.

[0006] Preferably, the elastic lifting and scraping mechanism includes a lifting rod that is movably inserted through the top of the vessel body. A fixed plate is fixedly sleeved on the outer surface of the lifting rod. The elastic lifting and scraping mechanism can scrape and clean the material remaining on the inner wall of the vessel body by means of two sets of scrapers moving up and down.

[0007] Preferably, an upper spring is movably sleeved on the outer surface of the lifting rod, and the two ends of the upper spring are fixedly connected to the bottom of the fixed plate and the top of the vessel body, respectively.

[0008] Preferably, a connecting frame is fixedly connected to the bottom of the lifting rod, and the connecting frame is provided with a small-angle scraper and a large-angle scraper from top to bottom.

[0009] Preferably, the eccentric drive mechanism includes a motor fixedly mounted on the base frame, and an eccentric wheel is fixedly connected to the output end of the motor. The eccentric drive mechanism can drive the lifting rod, so that the lifting rod moves up and down back and forth with the help of the upper spring.

[0010] Preferably, an arm shaft is fixedly connected to the outer surface of the base frame, and a drive arm is rotatably connected to the outer surface of the arm shaft.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This mixing kettle for plastic production uses an elastic lifting scraping mechanism and an eccentric drive mechanism to drive the lifting rod to reciprocate, so that the small-angle scraper and the large-angle scraper work together. The large-angle scraper first scrapes off the thicker residual layer, and the small-angle scraper then scrapes it more thoroughly, which can more thoroughly remove the residual materials on the inner wall of the kettle and effectively reduce the problem of unstable performance and cross-contamination of the next batch of products caused by the decomposition or volatilization of residual raw material additives.

[0012] 2. In the mixing kettle used for plastic production, when the upper spring is squeezed, the kettle body will also slide down along the frame shaft, while squeezing the lower spring at the same time, causing the entire kettle body to vibrate in the up and down direction. The up and down vibration of the kettle body can give the residual material attached to the inner wall an inertial force, break the adhesion between the residual material and the inner wall of the kettle body, and promote the removal of the residue. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the bottom structure of the vessel body in this application; Figure 3 This is a schematic diagram of the internal structure of the vessel body in this application.

[0014] The components are: 1. Base frame; 2. Frame shaft; 3. Lower spring; 4. Kettle body; 5. Feed hopper; 6. Discharge valve; 7. Lifting rod; 8. Fixed plate; 9. Upper spring; 10. Connecting frame; 11. Small angle scraper; 12. Large angle scraper; 13. Motor; 14. Eccentric wheel; 15. Arm shaft; 16. Drive arm. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] Please see Figure 1-3A mixing reactor for plastic production includes a base frame 1, on which a frame shaft 2 is fixedly connected. The number of frame shafts 2 is four. The outer surface of each of the four sets of frame shafts 2 is movably fitted with a lower spring 3. The lower spring 3 allows the reactor body 4 to slide up and down on the frame shaft 2 to a certain extent when subjected to external force. The outer surface of the four sets of frame shafts 2 is slidably fitted with the reactor body 4. The outer surface of the reactor body 4 is fixedly connected to a feed hopper 5. A discharge valve 6 is provided at the bottom of the reactor body 4. An elastic lifting scraping mechanism is provided on the reactor body 4. An eccentric drive mechanism is provided on the base frame 1.

[0017] Through the above technical solution, the outer surface of the reactor body 4 is fixedly connected to the feed hopper 5, which is used to put the plastic raw materials into the reactor body 4 for mixing. The bottom of the reactor body 4 is provided with a discharge valve 6. When the mixing is completed, the discharge valve 6 can be opened to discharge the mixed plastic raw materials. After the plastic raw materials are mixed in the reactor body 4, the residual materials attached to the inner wall of the reactor body 4 can be scraped and cleaned by the elastic lifting scraping mechanism and the eccentric drive mechanism.

[0018] Specifically, the elastic lifting and scraping mechanism includes a lifting rod 7 that is movably installed on the top of the vessel body 4, and a fixed plate 8 is fixedly sleeved on the outer surface of the lifting rod 7.

[0019] Through the above technical solution, the lifting rod 7, as the main transmission component of the wall scraping mechanism, can move up and down on the top of the vessel body 4 under the action of external force. The fixed plate 8 is used to fix and connect the upper spring 9. After the upper spring 9 deforms, the force can be reversed to the lifting rod 7 through the fixed plate 8.

[0020] Specifically, an upper spring 9 is movably sleeved on the outer surface of the lifting rod 7, and the two ends of the upper spring 9 are fixedly connected to the bottom of the fixed plate 8 and the top of the vessel body 4, respectively.

[0021] Through the above technical solution, the upper spring 9 plays the role of elastic reset. When the lifting rod 7 is subjected to a downward driving force, the upper spring 9 is compressed; when the driving force disappears, the elastic force of the upper spring 9 will cause the lifting rod 7 to reset upward, thereby realizing the reciprocating up and down movement of the lifting rod 7.

[0022] Specifically, the bottom of the lifting rod 7 is fixedly connected to a connecting frame 10, and the connecting frame 10 is provided with a small cutting angle scraper 11 and a large cutting angle scraper 12 from top to bottom.

[0023] Through the above technical solution, the connecting frame 10 serves as the mounting carrier for the small-angle scraper 11 and the large-angle scraper 12. The small-angle scraper 11 and the large-angle scraper 12 move up and down under the drive of the lifting rod 7 to scrape and clean the material remaining on the inner wall of the vessel body 4. Since the state of the residue at different heights on the inner wall of the vessel body 4 is different, the large-angle scraper 12 can first scrape off the thicker residue layer, while the small-angle scraper 11 then performs fine scraping, thereby improving the cleaning effect.

[0024] Specifically, the eccentric drive mechanism includes a motor 13 fixedly mounted on the base frame 1, and an eccentric wheel 14 is fixedly connected to the output end of the motor 13.

[0025] Through the above technical solution, the motor 13 serves as the power source, driving the eccentric wheel 14 to rotate. During the rotation of the eccentric wheel 14, its eccentric structure will periodically push the lifting rod 7 through the drive arm 16, causing the lifting rod 7 to move downward against the elastic force of the upper spring 9. When the eccentric wheel 14 rotates through a certain angle, the elastic force of the upper spring 9 will cause the lifting rod 7 to return to its original position, thereby realizing the reciprocating up and down movement of the lifting rod 7, which drives the scraper to scrape the inner wall of the vessel body 4.

[0026] Specifically, the outer surface of the base frame 1 is fixedly connected to the arm shaft 15, and the outer surface of the arm shaft 15 is rotatably connected to the drive arm 16.

[0027] Through the above technical solution, the arm shaft 15 provides rotational support for the drive arm 16, and the drive arm 16 can rotate around the arm shaft 15. That is, during the rotation, the eccentric wheel 14 pushes the drive arm 16, causing the other end of the drive arm 16 to periodically press down on the top of the lifting rod 7.

[0028] Working Principle: The operator feeds the plastic raw material to be mixed into the reactor body 4 through the feed hopper 5. The feed hopper 5 is fixedly connected to the outer surface of the reactor body 4, providing a channel for the raw material to enter the reactor body 4. After mixing is completed, the mixed plastic raw material is discharged through the discharge valve 6. At this time, a certain amount of plastic raw material is attached to the inner wall of the reactor body 4. These residues will affect the mixing of the next batch of products. Therefore, the motor 13 in the eccentric drive mechanism can be started to drive the eccentric wheel 14 to rotate. During the rotation of the eccentric wheel 14, it will periodically push one end of the drive arm 16, so that the other end of the drive arm 16 will periodically press down on the top of the lifting rod 7. When the lifting rod 7 is subjected to the downward pressure of the drive arm 16, it will overcome the elastic force of the upper spring 9 and move downward. When the eccentric wheel 14 rotates through a certain angle and the downward pressure disappears, the elastic force of the upper spring 9 will cause the lifting rod 7 to return to its original position, thereby realizing the reciprocating up and down movement of the lifting rod 7. During the reciprocating up and down movement of the lifting rod 7, the connecting frame 10 drives the small cutting angle scraper 11 and the large cutting angle scraper. The two scrapers 12 move up and down together. The large-angle scraper 12 first contacts the inner wall of the vessel body 4 to initially scrape away the thicker residue layer. Then, the small-angle scraper 11 performs fine scraping on the area that has been initially scraped, thoroughly cleaning away the residue. This avoids the decomposition or volatilization of additives in the residual raw materials, which could lead to unstable performance of the next batch of products and cross-contamination. This is because the large-angle scraper 12 has a larger cutting angle, which allows it to use a larger force and a wider contact area to initially clean the thicker residue layer. The small-angle scraper 11 has a smaller cutting angle, which allows it to use a smaller contact area and a larger pressure to finely clean the residue, ensuring that the inner wall of the vessel body 4 is clean. During the compression of the upper spring 9, the vessel body 4 also slides down along the support shaft 2, while simultaneously compressing the lower spring 3, causing the entire vessel body 4 to vibrate up and down. The up and down vibration of the vessel body 4 can give the residue adhering to the inner wall an inertial force, breaking the adhesion between the residue and the inner wall of the vessel body 4 and promoting the removal of the residue.

[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing tank for plastic production, comprising a base frame (1), characterized in that: The base frame (1) is fixedly connected with a frame shaft (2), and there are four sets of frame shafts (2). The outer surfaces of the four sets of frame shafts (2) are movably fitted with a lower spring (3). The outer surfaces of the four sets of frame shafts (2) are slidably fitted with a vessel body (4). The outer surface of the vessel body (4) is fixedly connected to a feed hopper (5). The bottom of the vessel body (4) is provided with a discharge valve (6). The vessel body (4) is provided with an elastic lifting scraping mechanism. The base frame (1) is provided with an eccentric drive mechanism.

2. The mixing reactor for plastic production according to claim 1, characterized in that: The elastic lifting scraping mechanism includes a lifting rod (7) that is movably inserted through the top of the vessel body (4), and a fixed plate (8) is fixedly sleeved on the outer surface of the lifting rod (7).

3. The mixing reactor for plastic production according to claim 2, characterized in that: The outer surface of the lifting rod (7) is movably fitted with an upper spring (9), and the two ends of the upper spring (9) are fixedly connected to the bottom of the fixed plate (8) and the top of the vessel body (4), respectively.

4. A mixing reactor for plastic production according to claim 3, characterized in that: The bottom of the lifting rod (7) is fixedly connected to a connecting frame (10), and the connecting frame (10) is provided with a small angle scraper (11) and a large angle scraper (12) from top to bottom.

5. A mixing reactor for plastic production according to claim 1, characterized in that: The eccentric drive mechanism includes a motor (13) fixedly mounted on a base frame (1), and an eccentric wheel (14) is fixedly connected to the output end of the motor (13).

6. A mixing reactor for plastic production according to claim 1, characterized in that: An arm shaft (15) is fixedly connected to the outer surface of the base frame (1), and a drive arm (16) is rotatably connected to the outer surface of the arm shaft (15).

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