Modified polyamide polymerization reactor

Abstract

The utility model discloses a modified polyamide polymerization reactor which comprises a kettle body, the top of the kettle body is in threaded connection with a cover, a bottom plate is arranged in the cover, three fixing shafts are rotatably arranged in the cover, planetary gears are fixedly sleeved outside the fixing shafts, a sun gear and an inner gear ring are rotatably arranged in the cover, and the inner gear ring is sleeved outside the sun gear. The sun gear is in transmission connection with the inner gear ring through the three planetary gears, the sun gear is fixedly connected with a stirrer, and the fixed shaft is fixedly connected with a stirring auger. The driving mechanism drives the sun gear, the planetary gear and the inner gear ring to rotate, so that the stirrer stirs polyamide raw materials in the kettle body, the stirring auger assists in stirring the polyamide raw materials, and the scraping plate scrapes raw materials adhered to the inner wall of the fixed shaft, and therefore, the stirring efficiency of the polyamide reaction kettle is improved, and the service life of the polyamide reaction kettle is prolonged. And the reaction time required by polyamide production is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of polymerization reactors, in particular to a modified polyamide polymerization reactor. Background Art

[0002] Polyamide (PA, commonly known as nylon) is a resin first developed by DuPont in the United States for fiber, and industrialized in 1939. In the 1950s, it began to develop and produce injection molded products to replace metals to meet the requirements of lightweight and cost-reducing downstream industrial products. The main chain of polyamide contains many repeated amide groups. When used as a plastic, it is called nylon, and when used as a synthetic fiber, we call it nylon. Polyamide can be prepared from diamines and dibasic acids, or it can be synthesized from ω-amino acids or cyclic lactams. Depending on the number of carbon atoms contained in diamines, dibasic acids or amino acids, a variety of different polyamides can be produced. There are dozens of polyamide varieties, among which polyamide-6, polyamide-66 and polyamide-610 are the most widely used.

[0003] Among them, different types of polyamides can be added with additives of other properties to obtain polyamide plastics with different properties. In the production process of polyamide plastics, the mixture of polyamide and additives needs to be mixed by a stirring mechanism and then melted, and then the melted fluid is cooled and crushed to obtain a granular new polyamide plastic. In the prior art, a stirrer is used for stirring, and the stirring efficiency is not high, which affects the production efficiency of polyamide. Utility Model Content

[0004] The purpose of the utility model is to provide a modified polyamide polymerization reactor to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a modified polyamide polymerization reactor, comprising: a kettle body, the top of the kettle body is threadedly connected to a lid, a bottom plate is arranged inside the lid, three fixed shafts are rotatably arranged inside the lid, planetary gears are fixedly sleeved outside the fixed shafts, a sun gear and an inner gear ring are rotatably arranged inside the lid, the sun gear is connected to the inner gear ring through the three planetary gears, the sun gear is fixedly connected to a stirrer, and the fixed shaft is fixedly connected to a stirring auger.

[0006] Furthermore, a connecting ring is fixedly connected to the bottom end of the sun gear, sliding sealing rings are arranged between the connecting ring and the cover and the bottom plate, and a plurality of scrapers are arranged in an array on the bottom end of the connecting ring.

[0007] Furthermore, the top of the fixed shaft is rotatably arranged in the cover, and the bottom of the fixed shaft passes through the bottom plate and is fixedly connected to a stirring auger.

[0008] Furthermore, a motor is installed on the top of the cover, the output shaft of the motor is fixedly connected to the rotating shaft, the sun gear is fixedly sleeved on the rotating shaft, and the bottom end of the rotating shaft passes through the bottom plate and is fixedly connected to the agitator.

[0009] Furthermore, the cover and the bottom plate are connected via a plurality of connecting rods.

[0010] Furthermore, a sliding sealing ring is provided between the fixed shaft and the bottom plate.

[0011] In the above technical scheme, the modified polyamide polymerization reactor provided by the utility model has the beneficial effects of:

[0012] The utility model drives the sun gear, the planetary gear and the inner gear ring to rotate through the driving mechanism, so that the agitator stirs the polyamide raw materials in the kettle, the stirring auger assists in stirring the polyamide raw materials, and the scraper scrapes the raw materials sticking to the inner wall of the fixed shaft, thereby improving the stirring efficiency of the polyamide reactor and shortening the reaction time required for polyamide production.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the structure of a stirring mechanism provided in an embodiment of the utility model;

[0018] Figure 3 A bottom view schematic diagram of the stirring mechanism provided in an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the gear set structure provided in an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 1. Kettle body; 2. Lid; 21. Connecting rod; 3. Motor; 4. Bottom plate; 5. Agitator; 6. Agitator auger; 7. Scraper; 8. Internal gear ring; 81. Connecting ring; 9. Planetary gear; 91. Fixed shaft; 10. Sun gear; 101. Rotating shaft. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] Please refer to 1-4, a modified polyamide polymerization reactor, including: a kettle body 1, the top of the kettle body 1 is threadedly connected to a cover 2, a bottom plate 4 is arranged inside the cover 2, three fixed shafts 91 are rotatably arranged inside the cover 2, planetary gears 9 are fixedly sleeved outside the fixed shafts 91, a sun gear 10 and an inner gear ring 8 are rotatably arranged inside the cover 2, the sun gear 10 is connected to the inner gear ring 8 through three planetary gears 9, the sun gear 10 is fixedly connected to the stirrer 5, the fixed shaft 91 is fixedly connected to the stirring auger 6, the fixed shaft 91 is set to limit the movement of the planetary gear 9, so that the planetary gear 9 rotates in place, and the inner gear ring 8 will rotate slowly under the rotation of the stirrer 5, wherein grease is coated between the inner gear ring 8, the planetary gears 9 and the sun gear 10.

[0024] Specifically, the utility model drives the sun gear 10, the planetary gears 9, and the inner gear ring 8 to rotate through the driving mechanism, so that the agitator 5 stirs the polyamide raw materials in the kettle body 1, the stirring auger 6 assists in stirring the polyamide raw materials, and the scraper 7 scrapes the raw materials sticking to the inner wall of the fixed shaft 91, thereby improving the stirring efficiency of the polyamide reactor and shortening the reaction time required for polyamide production.

[0025] In the embodiment further provided by the utility model, a connecting ring 81 is fixedly connected to the bottom end of the sun gear 10, and sliding sealing rings are arranged between the connecting ring 81 and the cover 2 and the bottom plate 4. The specific sealing connection method is common knowledge well known to the staff in this field, which is mainly to prevent the liquid polyamide from leaking between the two relatively moving parts. No further introduction is made here. A plurality of scrapers 7 are arranged in an array on the bottom end of the connecting ring 81, and the scraper 7 is fixedly connected to the bottom end of the connecting ring 81. The scraper 7 is driven by the rotation of the inner gear ring 8 to scrape the inner wall of the kettle body 1, so that the polyamide raw material in the kettle body 1 is stirred more evenly.

[0026] In the embodiment further provided by the utility model, the top of the fixed shaft 91 is rotatably arranged in the cover 2, and the bottom of the fixed shaft 91 passes through the bottom plate 4 and is fixedly connected to the stirring auger 6. A sliding sealing ring is arranged between the fixed shaft 91 and the bottom plate 4. The top of the fixed shaft 91 is connected to the cover 2 through a bearing to ensure smooth rotation of the fixed shaft 91. The sealing arrangement between the fixed shaft 91 and the bottom plate 4 is common knowledge known to the staff in this field and will not be explained in detail here.

[0027] In the embodiment further provided by the utility model, a motor 3 is installed on the top of the cover 2, and the output shaft of the motor 3 is fixedly connected to the rotating shaft 101, the rotating shaft 101 extends into the cover 2, and the sun gear 10 is fixedly sleeved on the rotating shaft 101. The bottom end of the rotating shaft 101 passes through the bottom plate 4 and is fixedly connected to the agitator 5. The rotating shaft 101 is driven to rotate by the motor 3, and then the sun gear 10 drives the planetary gear 9 to rotate, and the planetary gear 9 drives the inner gear ring 8 to rotate. Through the different gear ratios among the sun gear 10, the planetary gear 9 and the inner gear ring 8, the rotation speed of the sun gear 10 is greater than the rotation speed of the planetary gear 9, which is greater than the rotation speed of the inner gear ring 8, thereby realizing a reasonable distribution of the rotation speeds of the agitator 5, the stirring auger 6 and the scraper 7.

[0028] In an embodiment further provided by the utility model, the cover 2 and the base plate 4 are connected by a plurality of connecting rods 21, and the upper and lower ends of the connecting rods 21 are respectively fixedly connected to the bottom of the cover 2 and the top of the base plate 4, so as to fix the base plate 4 under the cover 2 to facilitate the installation of the inner gear ring 8, the planetary gears 9, and the sun gear 10.

[0029] In this utility model, reference is made to Figures 1 to 4 First, the motor 3 drives the rotating shaft 101 to rotate, so that the stirrer 5 stirs the kettle body 1. The sun gear 10 drives the planetary gear 9, so that the planetary gear 9 drives the stirring auger 6 fixedly connected to the fixed shaft 91 to rotate, and the polyamide raw material stirred and disturbed by the stirrer 5 is secondary disturbed, and then the polyamide raw material is quickly mixed. The rotation of the planetary gear 9 drives the inner gear ring 8, and the inner gear ring 8 slowly rotates in the kettle body 1, so that the scraper 7 scrapes off the raw material sticking to the inner cavity wall of the kettle body 1, and then the raw material sticking to the inner cavity wall of the kettle body 1 is secondary mixed, which further improves the mixing efficiency of the raw materials and shortens the reaction time required for polyamide production.

[0030] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A modified polyamide polymerization reactor, comprising: A kettle body (1), characterized in that: the top of the kettle body (1) is threadedly connected to a lid (2), a bottom plate (4) is arranged inside the lid (2), three fixed shafts (91) are rotatably arranged inside the lid (2), a planetary gear (9) is fixedly sleeved outside the fixed shaft (91), a sun gear (10) and an inner gear ring (8) are rotatably arranged inside the lid (2), the sun gear (10) is connected to the inner gear ring (8) through the three planetary gears (9), the sun gear (10) is fixedly connected to a stirrer (5), and the fixed shaft (91) is fixedly connected to a stirring auger (6).

2. A modified polyamide polymerization reactor according to claim 1, characterized in that: The bottom end of the sun gear (10) is fixedly connected to a connecting ring (81), and sliding sealing rings are arranged between the connecting ring (81) and the cover (2) and the bottom plate (4). A plurality of scrapers (7) are arranged in an array on the bottom end of the connecting ring (81).

3. A modified polyamide polymerization reactor according to claim 1, characterized in that: The top of the fixed shaft (91) is rotatably arranged in the cover (2), and the bottom of the fixed shaft (91) passes through the bottom plate (4) and is fixedly connected to the stirring auger (6).

4. A modified polyamide polymerization reactor according to claim 1, characterized in that: A motor (3) is installed on the top of the cover (2); the output shaft of the motor (3) is fixedly connected to a rotating shaft (101); the sun gear (10) is fixedly sleeved on the rotating shaft (101); the bottom end of the rotating shaft (101) passes through the bottom plate (4) and is fixedly connected to the stirrer (5).

5. A modified polyamide polymerization reactor according to claim 1, characterized in that: The cover (2) and the bottom plate (4) are connected via a plurality of connecting rods (21).

6. A modified polyamide polymerization reactor according to claim 3, characterized in that: A sliding sealing ring is provided between the fixed shaft (91) and the bottom plate (4).

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